JP2013209006A - Vehicle air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve heating efficiency of a vehicle air conditioner.SOLUTION: In cooling mode, inside air to be introduced to an air passage 12 through an indoor opening 12a is cooled by an indoor heat exchanger 50 and blown into the cabin through the indoor opening 14a. Outside air to be introduced to an air passage 13 is heated by an outdoor heat exchanger 40 and blown to the outside through an outdoor opening 15a. In heating mode, the outside air to be introduced to the air passage 13 is heated by the indoor heat exchanger 50 and blown into the cabin through the indoor opening 14a. Inside air to be introduced to the air passage 12 is cooled by the outdoor heat exchanger 40 and blown to the outside through the outdoor opening 15a. An electronic control device 130 has the cooling mode and the heating mode. In the heating mode, the inside air flows to the outdoor heat exchanger 40, thereby preventing the outdoor heat exchanger 40 from being frosted by heat of the inside air.

Description

  The present invention relates to a vehicle air conditioner.

  The current vehicle interior air conditioning system is a summer cooling system that uses a refrigeration cycle mainly composed of a compressor, a vehicle interior heat sink, a vehicle exterior heat sink, and an expansion valve. Heating is performed.

  However, due to the recent increase in environmental awareness, environmentally friendly electric vehicles and plug-in hybrid vehicles are spreading. For this reason, especially during heating, the exhaust heat of the engine becomes almost zero, and as a countermeasure, a system that achieves both cooling and heating with a refrigeration cycle (heat pump cycle) is becoming mainstream.

  As this type of system, as shown in Patent Document 1, there is a system composed of a compressor, a four-way valve, a vehicle exterior air heat exchanger, a vehicle interior air heat exchanger, and an expansion valve.

  During cooling, the four-way valve connects between the outlet of the compressor and the inlet of the vehicle exterior air heat exchanger, and connects between the inlet of the compressor and the outlet of the vehicle interior air heat exchanger. As a result, the refrigerant dissipates heat to the outside air in the vehicle exterior air heat exchanger, and the refrigerant absorbs heat from the vehicle interior air in the vehicle interior air heat exchanger.

  During heating, the four-way valve connects between the outlet of the compressor and the inlet of the vehicle interior air heat exchanger, and connects between the inlet of the compressor and the outlet of the outdoor air heat exchanger. Thus, the refrigerant dissipates heat to the vehicle interior air in the vehicle interior air heat exchanger, and the refrigerant absorbs heat from the vehicle exterior air in the vehicle exterior air heat exchanger. Thus, cooling and heating can be achieved by switching the four-way valve.

JP-A-5-238246

  In the system of the above-mentioned patent document 1, although cooling and heating can be achieved by switching the four-way valve, the refrigerant absorbs heat from the air outside the vehicle compartment at the time of heating. For this reason, when the air temperature outside the passenger compartment is low in winter or the like, frost forms on the outdoor air heat exchanger and the heat exchange between the refrigerant and the air outside the passenger compartment may be hindered, and the heating performance may be deteriorated.

  In view of the above points, an object of the present invention is to ensure heating performance by preventing frost formation on a heat exchanger in a vehicle air conditioner.

In order to achieve the above object, according to the first aspect of the present invention, a first air passage that takes in air in the vehicle interior and blows air into the vehicle interior and takes air outside the vehicle compartment and blows air out of the vehicle compartment. A first air blowing pattern that can form a second air passage, a third air passage that takes air inside the vehicle interior and blows air outside the vehicle compartment, and air outside the vehicle compartment and blows air into the vehicle interior. A blowing pattern switching mechanism (20, 30a, 30b) for switching from one blowing pattern to the other blowing pattern among the second blowing patterns that can respectively form the fourth blowing path
1st heat exchanger (40, which comprises the refrigerating-cycle apparatus which circulates a refrigerant | coolant, and heat-exchanges between the air which flows into either one of the said 1st, 4th ventilation paths, and the said refrigerant | coolant. 50),
2nd heat exchange which comprises the said refrigeration cycle apparatus with the said 1st heat exchanger, and heat-exchanges between the air and refrigerant which flow through any one of the said 2nd, 3rd ventilation path. A vessel (40, 50),
One of the first and second heat exchangers heats the air passing through the one heat exchanger with the refrigerant, and one of the first and second heat exchangers. The other heat exchanger other than the heat exchanger is characterized in that the air passing through the other heat exchanger is cooled by the refrigerant.

  According to the first aspect of the present invention, in the second air blowing pattern, the first heat exchanger heats the air outside the vehicle compartment with the refrigerant, and the second heat exchanger uses the refrigerant to air inside the vehicle compartment. The vehicle interior can be cooled and the vehicle interior can be heated. In this case, since the air in the vehicle interior flows through the second heat exchanger, it is possible to prevent the second heat exchanger from being frosted by the heat of the air in the vehicle interior. Therefore, when the air temperature outside the passenger compartment is low, heating performance can be ensured by preventing the heat exchanger from frosting. Furthermore, heat can be recovered from the air in the passenger compartment in the second heat exchanger.

  In the second aspect of the invention, in the second air blowing pattern, the first heat exchanger heats the air outside the vehicle compartment with the refrigerant, and the second heat exchanger cools the air inside the vehicle compartment with the refrigerant. In this way, the vehicle interior is heated. Thereby, cooling and heating of a vehicle interior can be made compatible.

  In addition, the code | symbol in the bracket | parenthesis of each means described in this column and the claim shows the correspondence with the specific means as described in embodiment mentioned later.

It is a figure which shows the vehicle air conditioner in 1st Embodiment of this invention. It is sectional drawing of the vehicle air conditioner in 1st Embodiment. It is a rear view of the vehicle air conditioner of 1st Embodiment. It is a figure which shows the electrical constitution of the vehicle air conditioner of 1st Embodiment. It is a graph which shows the relationship between TAO and air-conditioning mode in 1st Embodiment. It is sectional drawing which shows the air flow in the vehicle air conditioner at the time of air_conditioning | cooling mode in 1st Embodiment. It is sectional drawing which shows the air flow in the vehicle air conditioner at the time of heating mode in 1st Embodiment. It is sectional drawing which shows the air flow in the vehicle air conditioner at the time of inside air heating mode in 1st Embodiment. It is sectional drawing which shows the air flow in the vehicle air conditioner at the time of ventilation mode in 1st Embodiment. It is a figure which shows the vehicle air conditioner in 2nd Embodiment of this invention. It is a figure which shows the heat exchanger single-piece | unit in 2nd Embodiment. It is a figure which shows the vehicle air conditioner in 3rd Embodiment of this invention. It is a figure which shows the Peltier device single-piece | unit in 3rd Embodiment. It is sectional drawing which shows the vehicle air conditioner in 4th Embodiment of this invention. It is sectional drawing which shows the vehicle air conditioner in 4th Embodiment. It is a figure which shows the air flow at the time of air_conditioning | cooling mode in the vehicle air conditioner of 5th Embodiment of this invention. It is a figure which shows the air flow at the time of the heating mode of the vehicle air conditioner in 5th Embodiment. It is sectional drawing which shows the structure of the vehicle air conditioner of 6th Embodiment of this invention. It is a figure which shows the air flow at the time of the air conditioning mode of the vehicle air conditioner in 6th Embodiment. It is a figure which shows the air flow at the time of the external air cooling mode of the vehicle air conditioner in 6th Embodiment. It is a figure which shows the air flow at the time of the heating mode of the vehicle air conditioner in 6th Embodiment. It is a figure which shows the air flow at the time of the inside / outside air mixing heating mode of the vehicle air conditioner in 6th Embodiment. It is a figure which shows the air flow at the time of the inside air dehumidification heating mode of the vehicle air conditioner in 6th Embodiment. It is a perspective view which shows the vehicle air conditioner of 7th Embodiment of this invention. It is a vehicle mounting figure of the vehicle air conditioner of 7th Embodiment. It is a figure which shows the air flow at the time of the air conditioning mode of the vehicle air conditioner in 7th Embodiment. It is a figure which shows the air flow at the time of the heating mode of the vehicle air conditioner in 7th Embodiment. It is a perspective view which shows the vehicle air conditioner of 8th Embodiment of this invention. It is a figure which shows the air flow at the time of the air conditioning mode of the vehicle air conditioner in 8th Embodiment. It is a figure which shows the air flow at the time of the inside air heating mode of the vehicle air conditioner in 8th Embodiment. It is a figure which shows the air flow at the time of the heating mode of the vehicle air conditioner in 8th Embodiment. It is a figure which shows other embodiment of the vehicle air conditioner which concerns on this invention. It is a figure which shows other embodiment of the vehicle air conditioner which concerns on this invention. It is a figure which shows other embodiment of the vehicle air conditioner which concerns on this invention. It is a figure which shows other embodiment of the vehicle air conditioner which concerns on this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, parts that are the same or equivalent to each other are given the same reference numerals in the drawings in order to simplify the description.

(First embodiment)
1 to 3 show a vehicle air conditioner according to a first embodiment of the present invention. FIG. 1 is a diagram showing a state in which a vehicle air conditioner 1 is mounted, FIG. 2 is a cross-sectional view as viewed from the left-right direction of the vehicle, and FIG.

  The vehicle air conditioner 1 is disposed on the engine room side (outside the vehicle compartment) with respect to the firewall 2. The firewall 2 is a partition wall for partitioning the engine room and the vehicle compartment of the automobile.

  As shown in FIG. 2, the vehicle air conditioner 1 includes a case 10, a switching door 20, fans 30a and 30b, an outdoor heat exchanger 40, an indoor heat exchanger 50, a permeable membrane 60, a compressor 70, a four-way valve 80, And an expansion valve 90.

  The case 10 is formed in a rectangular parallelepiped shape from a resin material or the like, and includes a switching door 20, blowers 30a and 30b, an outdoor heat exchanger 40, an indoor heat exchanger 50, a permeable membrane 60, a compressor 70, a four-way valve 80, and The expansion valve 90 is accommodated.

  Specifically, the case 10 includes case portions 11a and 11b. As the case portions 11a and 11b, one that is fastened by a fastening member such as a screw to form one case, or one that is integrally formed of resin to form one case is used. The case part 11 a includes ventilation paths 12, 13, 14, 15 and a switching chamber 16.

  The ventilation path 12 is formed by the walls 100, 101, 102 and the upper wall 103 of the case portion 11 b, and guides the air in the vehicle interior (hereinafter referred to as “inside air”) taken in from the inside air inlet 12 a to the switching chamber 16. It is a ventilation path. The inside air inlet 12a is provided on the lower side of the case portion 11a and opens to the rear side of the vehicle.

  The wall 100 is disposed parallel to the horizontal direction on the upper side of the case portion 11b. The inner walls 101 and 102 are formed in parallel to the top-and-bottom direction on the vehicle front side with respect to the wall 100. The inner wall 101 constitutes a boundary wall between the ventilation paths 12 and 15. The inner wall 102 is disposed on the vehicle rear side with respect to the inner wall 101. The walls 100 and 102 constitute a boundary wall between the ventilation paths 12 and 14. The switching chamber 16 is located above the inner walls 101 and 102.

  The ventilation path 13 is formed by the walls 104, 105, 106 of the case portion 11 a, and is a second ventilation path for guiding air outside the vehicle compartment (hereinafter referred to as “outside air”) taken in through the outside air inlet 13 a to the switching chamber 16. It is. The outside air inlet 13a is formed so as to open to the vehicle front side of the case portion 11a. The switching chamber 16 is disposed on the vehicle rear side with respect to the ventilation path 12.

  The ventilation path 14 is a third ventilation path that is formed by the walls 100, 102, and 107 to 111 and guides air from the switching chamber 16 to the vehicle interior opening 14a. The walls 107 to 111 are formed so as to gradually reduce the cross-sectional area of the air flow path from the switching chamber 16 toward the vehicle interior opening 14a. The vehicle interior opening 14a is disposed above the inside air introduction port 12a and opens toward the rear of the vehicle.

  The ventilation path 15 is a fourth ventilation path that is formed by the walls 101, 112 to 115 and the upper wall 103 of the case portion 11b and guides the air from the switching chamber 16 to the opening 15a outside the vehicle compartment. The walls 112 to 115 are disposed on the lower side of the wall 105 and are formed so as to gradually reduce the cross-sectional area of the air flow path from the switching chamber 16 toward the vehicle exterior opening 15a. The vehicle interior outside opening 15a is disposed below the outside air introduction port 13a and opens toward the front of the vehicle.

  The case part 11b is formed in a rectangular parallelepiped and is disposed on the lower side with respect to the case part 11a. The case part 11b accommodates the compressor 70, the four-way valve 80, and the expansion valve 90, and comprises a refrigerating cycle part.

  The switching door 20 is disposed in the switching chamber 16 and guides the air that has passed through one of the ventilation paths 12 and 13 to one of the ventilation paths 14 and 15, and the ventilation paths 12 and 13. The air which passed the other ventilation path other than one ventilation path among them is led to the other ventilation path other than one ventilation path among the ventilation paths 14 and 15.

  A butterfly door is used as the switching door 20 of the present embodiment. The butterfly door includes a door main body 20a formed in a plate shape and a rotating shaft 20b. The rotating shaft 20b is rotatably supported with respect to the case part 11a, and is arrange | positioned in the intermediate part of the door width direction of the door main-body part 20a. The door main body 20a rotates around the rotation shaft 20b.

  The blower 30 a is disposed on the vehicle front side with respect to the switching chamber 16 on the upstream side of the ventilation path 15. The blower 30a includes a fan 32a and an electric motor 31a that rotates the fan 32a. The electric motor 31 a is disposed in a space surrounded by the walls 105 and 112 to 115. The fan 32 a is arranged with its air inlet facing the switching chamber 16. As the fan 32a of this embodiment, for example, a centrifugal fan such as a sirocco fan is used.

  The blower 30 b is disposed on the vehicle rear side with respect to the switching chamber 16 on the upstream side of the ventilation path 14. The blower 30b includes a fan 32b and an electric motor 31b that rotates the fan 32b. The electric motor 31b is disposed in a space surrounded by the walls 104 and 106-111. The fan 32 b has an air suction port disposed toward the switching chamber 16. As the fan 32b of the present embodiment, for example, a centrifugal fan such as a sirocco fan is used.

  As the air blower 30a of this embodiment, what has a capacity | capacitance which can produce the air volume although it is larger than the air volume of the air blower 30b at least is used.

  The outdoor heat exchanger 40 is disposed in the ventilation path 15 between the wall 103 of the case portion 11a and the upper wall 103 of the case portion 11b. The outdoor heat exchanger 40 exchanges heat between the air introduced from the switching chamber 16 and the refrigerant.

  The indoor heat exchanger 50 is disposed in the ventilation path 14 between the walls 109 and 100 of the case portion 11a. The indoor heat exchanger 50 exchanges heat between the air introduced from the switching chamber 16 and the refrigerant.

  The outdoor heat exchanger 40 and the indoor heat exchanger 50 of this embodiment are each formed in a flat shape. The outdoor heat exchanger 40 and the indoor heat exchanger 50 are respectively arranged in parallel to the top-and-bottom direction (vertical direction).

  The permeable membrane 60 is a water permeable membrane that is disposed at the opening of the wall 101 and moves water vapor from the air in one of the ventilation paths 12 and 15 toward the air in the other ventilation path.

  The compressor 70 compresses and discharges the refrigerant. An electric compressor is used as the compressor 70 of the present embodiment. The four-way valve 80 connects between the inlet of one of the outdoor heat exchanger 40 and the indoor heat exchanger 50 and the outlet of the compressor 70, so that the indoor heat exchanger 50 and the outdoor heat exchanger 40 The outlet of the heat exchanger other than one of the heat exchangers is connected to the inlet of the compressor 70. The four-way valve 80 of this embodiment constitutes an electromagnetic valve.

  The expansion valve 90 is disposed between the indoor heat exchanger 50 and the outdoor heat exchanger 40, expands the refrigerant flowing from one of the indoor heat exchanger 50 and the outdoor heat exchanger 40, and expands the other. Lead to heat exchanger. The outdoor heat exchanger 40, the indoor heat exchanger 50, the permeable membrane 60, the compressor 70, the four-way valve 80, and the expansion valve 90 of the present embodiment constitute a refrigeration cycle apparatus.

  Next, the electrical configuration of the vehicle air conditioner 1 of the present embodiment will be described with reference to FIG.

  The electronic control device 130 in FIG. 4 includes a memory, a CPU, peripheral circuits, and the like. The electronic control unit 130 executes the air conditioning control process by executing a computer program stored in the memory. When executing the air conditioning control process, the electronic control device 130 is based on the output signals of the outside air temperature sensor 131, the inside air temperature sensor 131, the solar radiation sensor 132, the heat exchanger temperature sensors 134 and 135, and the operation switch 137. The motor 31a of 30a, the motor 31b of the blower 30b, the four-way valve 80, the compressor 70, and the door driving motor 141 are controlled.

  The outside air temperature sensor 131 detects the air temperature Tam outside the passenger compartment. The inside air temperature sensor 132 detects the air temperature Tr in the passenger compartment. The solar radiation sensor 133 detects the solar radiation amount Ts incident on the vehicle interior. The heat exchanger temperature sensor 134 detects the air temperature Te blown from the indoor heat exchanger 50. The operation switch 137 is provided on the air conditioning operation panel 37 and is a switch for performing various settings such as a set temperature Tset and an air conditioning mode. The door driving motor 141 rotates the switching door 20. The heat exchanger temperature sensor 135 detects the air temperature Tc blown from the outdoor heat exchanger 40.

  Next, the air conditioning control process of the electronic control device 130 of this embodiment will be described.

  The electronic control device 130 calculates the target blowing temperature TAO using the output signals of the sensors 131, 132, 133, 134, 135 and the operation switch 137 and the following mathematical formula 1.

TAO = Kset × Tset−Kr × Tr
−Kam × Tam−Ks × Ts + C (Formula 1)
The target blowout temperature TAO is a vehicle compartment blowout air temperature necessary for maintaining the vehicle compartment temperature (inside air temperature) Tr at the set temperature Tset set by the temperature setting switch 137 regardless of the air conditioning thermal load fluctuation. Kset, Kr, Kam, and Ks are control gains. C is a constant for correction.

  Next, the electronic control unit 130 selects and executes the air conditioning mode based on the target blowing temperature TAO.

  FIG. 5 is a diagram showing the relationship between the target blowing temperature TAO and the air conditioning mode. The electronic control unit 130 selects the cooling mode when the target blowing temperature TAO is equal to or lower than the first threshold (about 20 ° C.). The ventilation mode is selected when the target blowing temperature TAO is equal to or higher than the first threshold and less than the second threshold (20 ° C. to 25 ° C.), and the heating mode (outside air heating mode) is selected when the target blowing temperature TAO is equal to or higher than the second threshold (25 ° C.). ) Or the inside air heating mode is selected.

  The electronic control unit 130 obtains a target value TEO of the air temperature blown out from the indoor heat exchanger 50 based on the target blowing temperature TAO and the map data stored in the memory, and exchanges heat with the obtained target value TEO. The rotational speed of the electric motor of the compressor 70 is controlled based on the detected temperatures Tc and Te of the device temperature sensors 135 and 134.

  Here, the target blowing temperature TAO and the target value TEO are in a one-to-one relationship. In the map data, the relationship between the target outlet temperature TAO and the target value TEO is stored in advance.

  In addition, based on the setting of the operation switch 137, the electronic control unit 130 selects and executes one air conditioning mode among the cooling mode, the heating mode, the inside air heating mode, and the ventilation mode. That is, the air conditioning mode can be set manually by setting the operation switch 137.

  Next, the cooling mode, the heating mode, the inside air heating mode, and the ventilation mode of this embodiment will be described separately. Hereinafter, “cold” shown in the vicinity of the heat exchangers 40 and 50 in each figure indicates that the corresponding heat exchanger cools the air with the refrigerant, and is shown in the vicinity of the heat exchangers 40 and 50. “Warm” indicates that the corresponding heat exchanger heats the air with the refrigerant.

(Cooling mode)
In FIG. 6, arrow Yg indicates the flow of outside air in the cooling mode, and arrow Yn indicates the flow of internal air in the cooling mode.

  The electronic control device 130 rotates the blowers 30a and 30b, respectively. The four-way valve 80 connects between the inlet of the outdoor heat exchanger 40 and the outlet of the compressor 70, and connects between the outlet of the indoor heat exchanger 50 and the inlet of the compressor 70. For this reason, the high-temperature and high-pressure refrigerant discharged from the compressor 70 flows to the expansion valve 90 through the outdoor heat exchanger 40 through the four-way valve 80. The expansion valve 90 depressurizes the refrigerant. The decompressed refrigerant returns to the compressor 70 through the indoor heat exchanger 50 and the four-way valve 80. The switching door 20 is rotated by the door driving motor 141 and set to the state shown in FIG.

  At this time, the inside air is introduced into the ventilation path 12 through the vehicle interior opening 12a by the blower 30b. The introduced air is guided to the ventilation path 14 side by the switching door 20. The guided air flows to the indoor heat exchanger 50 side after passing through the blower 30b. The flowing air is cooled by the indoor heat exchanger 50 and blown out from the vehicle interior opening 14a into the vehicle interior.

  Further, the blower 30a introduces outside air into the ventilation path 13 through the vehicle interior outside opening 13a. The introduced air is guided to the ventilation path 15 side by the switching door 20. The guided air flows to the outdoor heat exchanger 40 side after passing through the blower 30a. The flowing air is heated by the outdoor heat exchanger 40 and blown out of the vehicle compartment opening 15a.

  As described above, the first air passage (see arrow Yn in FIG. 6) that takes in the inside air and blows the inside air into the vehicle interior opening 14a, and the second air that takes in the outside air and blows the outside air into the vehicle interior opening 15a. A first air blowing pattern that forms a path (see arrow Yg in FIG. 6) is implemented.

  At this time, when the humidity of the air in the ventilation path 15 is higher than the humidity of the air in the ventilation path 12, the humidity of the air in the ventilation path 12 and the humidity of the air in the ventilation path 15 are balanced. Furthermore, water vapor moves from the ventilation path 15 side through the permeable membrane 60 to the ventilation path 12 side.

  Here, the amount of refrigerant discharged from the compressor 70 is controlled by controlling the rotation speed of the compressor 70, and the detected temperature Te is brought close to the target value TEO. For example, when the detected temperature Te of the heat exchanger temperature sensor 134 is higher than the target value TEO, as the detected temperature Te approaches the target value TEO, the rotational speed of the compressor 70 is decreased to discharge refrigerant from the compressor 70. Reduce the amount. Thereafter, when the detected temperature Te reaches the target value TEO, the rotation of the compressor 70 is stopped.

(Heating mode)
In FIG. 7, the arrow Yg indicates the flow of outside air in the heating mode, and the arrow Yn indicates the flow of inside air in the heating mode.

  Similar to the cooling mode, the electronic control unit 130 controls the rotational speed of the compressor 70 and rotates the blowers 30a and 30b, respectively. Further, the four-way valve 80 connects between the inlet of the indoor heat exchanger 50 and the outlet of the compressor 70, and connects between the outlet of the outdoor heat exchanger 40 and the inlet of the compressor 70. Therefore, the high-temperature and high-pressure refrigerant discharged from the compressor 70 flows to the expansion valve 90 through the indoor heat exchanger 50 through the four-way valve 80. The expansion valve 90 depressurizes the refrigerant. The decompressed refrigerant returns to the compressor 70 through the outdoor heat exchanger 40 and the four-way valve 80. The switching door 20 is rotated by the door driving motor 141 and set to the state shown in FIG.

  At this time, the outside air is introduced into the ventilation path 13 through the opening 13a outside the vehicle compartment by the blower 30b. The introduced air is guided to the ventilation path 14 side by the switching door 20. The guided air flows to the indoor heat exchanger 50 side after passing through the blower 30b. The flowing air is heated by the indoor heat exchanger 50 and blown out from the vehicle interior opening 14a into the vehicle interior.

  Furthermore, the inside air is introduced into the ventilation path 12 through the vehicle interior opening 12a by the blower 30a. The introduced air is guided to the ventilation path 15 side by the switching door 20. The guided air flows to the outdoor heat exchanger 40 side after passing through the blower 30a. This flowing air is cooled by the outdoor heat exchanger 40 and blown out of the passenger compartment through the passenger compartment opening 15a.

  As described above, the third air passage (see arrow Yn in FIG. 7) for taking in the inside air and blowing the inside air to the vehicle interior opening 15a, and the fourth air passage for taking in the outside air and blowing the outside air into the vehicle interior opening 14a. (Refer to the arrow Yg in FIG. 7) is implemented.

(Inside air heating mode)
In FIG. 8, the arrow Yg indicates the flow of outside air in the inside air heating mode, and the arrow Yn indicates the flow of inside air in the inside air heating.

  Similar to the heating mode, the electronic control unit 130 controls the rotation speed of the compressor 70 and rotates the blowers 30a and 30b, respectively. Further, similarly to the heating mode, the four-way valve 80 connects between the inlet of the indoor heat exchanger 50 and the outlet of the compressor 70, and between the outlet of the outdoor heat exchanger 40 and the inlet of the compressor 70. Connecting. The switching door 20 is rotated by the door driving motor 141 and set to the state shown in FIG.

  At this time, the inside air is introduced into the ventilation path 12 through the vehicle interior opening 12a by the blower 30b. The introduced air is guided to the ventilation path 14 side by the switching door 20. The guided air flows to the indoor heat exchanger 50 side after passing through the blower 30b. The flowing air is heated by the indoor heat exchanger 50 and blown out from the vehicle interior opening 14a into the vehicle interior.

  Further, the blower 30a introduces outside air into the ventilation path 13 through the vehicle interior outside opening 13a. The introduced air is guided to the ventilation path 15 side by the switching door 20. The guided air flows to the outdoor heat exchanger 40 side after passing through the blower 30a. This flowing air is cooled by the outdoor heat exchanger 40 and blown out of the passenger compartment through the passenger compartment opening 15a. At this time, when the humidity of the air in the ventilation path 12 is higher than the humidity of the air in the ventilation path 15, the water vapor moves from the ventilation path 12 side to the ventilation path 15 side through the permeable membrane 60. Thereby, the air in the ventilation path 12 can be dehumidified.

(Ventilation mode)
In FIG. 9, an arrow Yg indicates the flow of outside air in the ventilation mode.

  The electronic control unit 130 stops the compressor 70, stops the blower 30a, and rotates only the blower 30b. Further, the switching door 20 is rotated by the door driving motor 141 and set to the state shown in FIG.

  At this time, the outside air is introduced into the ventilation path 13 through the opening 13a outside the vehicle compartment by the blower 30b. The introduced air is guided to the ventilation path 14 side by the switching door 20. The guided air passes through the blower 30b and the indoor heat exchanger 50 and is blown out from the vehicle interior opening 14a into the vehicle interior.

  According to the present embodiment described above, the electronic control unit 130 connects the inlet of the outdoor heat exchanger 40 and the outlet of the compressor 70 by the four-way valve 80 in the cooling mode, and the indoor heat exchanger 50. Between the outlet of the compressor and the inlet of the compressor 70. At this time, the inside air introduced into the ventilation path 12 through the vehicle interior opening 12a is guided to the indoor heat exchanger 50 side by the switching door 20, and the guided air is cooled by the indoor heat exchanger 50 and is thus interior of the vehicle interior. It blows out into the vehicle compartment from the opening 14a. The outside air introduced into the ventilation path 13 through the vehicle exterior opening 13a is guided to the outdoor heat exchanger 40 side by the switching door 20, and the guided outdoor air is heated by the outdoor heat exchanger 40 to be opened outside the vehicle interior 15a. Is blown out of the passenger compartment.

  In the heating mode, the electronic control unit 130 connects the inlet of the indoor heat exchanger 50 and the outlet of the compressor 70 by the four-way valve 80, and connects the outlet of the outdoor heat exchanger 40 and the inlet of the compressor 70. Connect between them. At this time, the outside air introduced into the ventilation path 13 through the vehicle interior opening 13a is guided by the blower 30b to the indoor heat exchanger 50 side by the switching door 20, and this guided outside air is heated by the indoor heat exchanger 50. Then, the air is blown out from the vehicle interior opening 14a into the vehicle interior. The inside air introduced into the ventilation path 12 through the vehicle interior opening 12a by the blower 30a is guided to the outdoor heat exchanger 40 side by the switching door 20, and the guided inside air is cooled by the outdoor heat exchanger 40 to be The air is blown out of the passenger compartment through the outdoor opening 15a.

  Thereby, the electronic control unit 130 can achieve both the cooling mode and the heating mode. In addition, in the heating mode, since the inside air flows to the outdoor heat exchanger 40, the outdoor heat exchanger 40 not only collects heat from the inside air but also forms frost on the outdoor heat exchanger 40 by the heat of the inside air. Can be prevented. Therefore, heating efficiency can be improved.

  Here, in the conventional vehicle air conditioner that uses the exhaust heat of the traveling engine to heat, there is a fear that the heating capacity may fluctuate in the output of the traveling engine, but in the vehicle air conditioner 1 of the present embodiment. Thus, it is possible to provide a highly efficient air conditioning in the passenger compartment without causing the heating capacity to fluctuate in the output of the traveling engine and functioning alone as an air conditioner.

  The vehicle air conditioner 1 according to the present embodiment includes a switching door 20, blowers 30 a and 30 b, an outdoor heat exchanger 40, an indoor heat exchanger 50, a permeable membrane 60, a compressor 70, a four-way valve 80, and an expansion valve 90. 10 is housed and configured. For this reason, since the manufacturing process which mounts the vehicle air conditioner 1 in a vehicle can be simplified, the reduction of the manufacturing cost of a vehicle can be aimed at.

  In the present embodiment, the permeable membrane 60 is disposed on the wall (boundary wall) 101 between the ventilation paths 12 and 15. For this reason, in the inside air heating mode, the permeable membrane 60 can move water vapor from the air in the ventilation path 12 toward the air in the ventilation path 15. Thereby, the air which passes the ventilation path 12 can be dehumidified. Therefore, the low-humidity air can be blown out from the vehicle interior opening 14a through the ventilation paths 12 and 14 into the vehicle interior. Along with this, it is possible to prevent the window glass in the vehicle interior from being fogged.

(Second Embodiment)
Although the said 1st Embodiment demonstrated the example which provided the permeable membrane 60 in the boundary between the ventilation paths 12 and 15 in order to dehumidify the air which passes the inside of the ventilation path 13 in inside air heating mode, it replaces with this. In the present embodiment, an example in which the heat exchanger 61 is provided on the boundary wall between the ventilation paths 12 and 15 will be described.

  FIG. 10 is a cross-sectional view showing the configuration of the vehicle air conditioner 1 of the present embodiment. FIG. 11 is a view of the heat exchanger 61 in FIG. 10 as viewed from above.

  As shown in FIG. 11, the heat exchanger 61 includes a plate member 61 a disposed between the ventilation paths 12 and 15 and a plurality of heat exchange fins 61 b (from the plate material 61 a to the ventilation path 12 side in the vertical direction. 7 heat exchange fins 61b are shown) and a plurality of heat exchange fins 61c (seven heat exchange fins 61c are shown in the figure) protruding from the plate material 61a to the ventilation path 15 side in the vertical direction. The

  In the vehicle air conditioner 1 configured as described above, in the inside air heating mode, the air in the ventilation path 15 absorbs heat from the air in the ventilation path 12 through the heat exchanger 61. For this reason, the air in the ventilation path 12 is cooled by the heat exchanger 61. Thereby, dew condensation water is generated on the ventilation path 12 side in the heat exchanger 61. Therefore, the air in the ventilation path 12 can be dehumidified.

(Third embodiment)
Although the said 1st Embodiment demonstrated the example which provided the permeable membrane 60 in the boundary between the ventilation paths 12 and 15 in order to dehumidify the air which passes the inside of the ventilation path 13 in inside air heating mode, it replaces with this. In this embodiment, an example in which a Peltier element 62 is provided on the boundary wall between the ventilation paths 12 and 15 will be described.

  FIG. 12 is a cross-sectional view showing a configuration of the vehicle air conditioner 1 of the present embodiment. FIG. 13 is a view of the Peltier element 62 in FIG. 12 as viewed from above.

  The cooling surface 62a of the Peltier element 62 of the present embodiment is disposed on the ventilation path 12 side, and the heating surface 62b of the Peltier element 62 is disposed on the ventilation path 15 side. For this reason, the air in the ventilation path 15 absorbs heat from the air in the ventilation path 12 by the Peltier element 62. For this reason, dew condensation water is generated on the ventilation path 12 side in the heat exchanger 61. Therefore, the air in the ventilation path 12 can be dehumidified.

(Fourth embodiment)
In the present embodiment, an example in which the inside air dehumidifying heating mode in which the inside air that has passed through the ventilation path 15 from the ventilation path 12 is guided to the ventilation paths 13 and 14 and blown out from the inside air opening 14a in the first embodiment will be described. To do.

  FIG. 14 is a cross-sectional view showing a configuration of the vehicle air conditioner 1 of the present embodiment.

  The vehicle air conditioner 1 of this embodiment is obtained by adding a ventilation path 17 and a door 18 to the vehicle air conditioner 1 of FIG.

  The ventilation path 17 is a guide path for guiding the air blown from the outlet of the ventilation path 15 to the switching chamber 19 (that is, the inlet side of the ventilation path 13). The switching chamber 19 is provided on the upper side with respect to the outlet of the ventilation path 17 and on the front side with respect to the inlet of the ventilation path 13. The switching chamber 19 communicates with each of the ventilation paths 13 and 17 and also communicates with the vehicle exterior opening 15a and the vehicle exterior introduction port 13a.

  The door 18 is disposed in the switching chamber 19 and communicates with one of the outlet of the ventilation path 17 and the vehicle interior opening 13 a to the inlet of the ventilation path 13. The door 18 is rotated by a drive motor. The drive motor is controlled by the electronic control unit 130.

  Next, the inside air dehumidifying heating mode of this embodiment will be described.

  First, the electronic control unit 130 controls the rotation of the drive motor to bring the door 18 into the state shown in FIG. In addition to this, the electronic control unit 130 controls the compressor 70, the fans 30a and 30b, the four-way valve 80, and the switching door 20 (the door driving motor 141), respectively, as in the heating mode of FIG.

  Accordingly, the inside air introduced into the ventilation path 12 by the blower 30a through the vehicle interior opening 12a is guided to the outdoor heat exchanger 40 side by the switching door 20, and the guided inside air is guided by the outdoor heat exchanger 40. Cooled and blown out from the ventilation path 17 to the switching chamber 19. The blown-out inside air is introduced into the ventilation path 13 by the blower 30b. The introduced inside air is guided to the indoor heat exchanger 50 side by the switching door 20, and the guided inside air is reheated by the indoor heat exchanger 50 and blown out from the vehicle interior opening 14a into the vehicle interior.

  Thus, the inside air is dehumidified by the outdoor heat exchanger 40, and the dehumidified inside air is heated by the indoor heat exchanger 50 and blown out from the vehicle interior opening 14a into the vehicle interior.

  Further, when the electronic control device 130 performs the heating mode (outside air mode), the door 18 is brought into the state shown in FIG. 15 by the driving motor. Therefore, the switching chamber 19 allows communication between the outlet of the air passage 17 and the vehicle exterior opening 15a, and communication between the vehicle exterior introduction port 13a and the air passage 13 entrance.

  Further, when the electronic control device 130 performs the cooling mode, the ventilation mode, or the like, the door 18 is brought into a state similar to FIG. 15 by the driving motor.

  According to the present embodiment described above, the internal air introduced into the ventilation path 12 through the vehicle interior opening 12a is dehumidified by the outdoor heat exchanger 40 when the electronic control device 130 performs the inside air dehumidifying heating mode. The dehumidified room air is reheated by the indoor heat exchanger 50 and blown out from the vehicle interior opening 14a into the vehicle interior. Thereby, dehumidification of the vehicle interior can be achieved without discharging the inside air heated by the indoor heat exchanger 50 to the outside of the vehicle interior.

(Fifth embodiment)
Although the said 1st-4th embodiment demonstrated the example which comprised the vehicle air conditioner 1 so that air_conditioning | cooling mode and heating mode were compatible using the four-way valve 80, it replaces with this and uses the four-way valve 80. An example in which the vehicle air conditioner 1 is configured to achieve both the cooling mode and the heating mode will be described.

  16 and 17 are sectional views of the vehicle air conditioner 1 according to this embodiment. 16 and 17, the same reference numerals as those in FIG. 2 denote the same elements.

  The indoor heat exchanger 50 of the present embodiment is disposed in the ventilation path 12. The indoor heat exchanger 50 is disposed between the inlet of the compressor 70 and the outlet of the expansion valve 90. Thus, the indoor heat exchanger 50 functions as a cooling heat exchanger that cools the inside air using the refrigerant. The outdoor heat exchanger 40 is disposed in the ventilation path 13. The outdoor heat exchanger 40 is disposed between the outlet of the compressor 70 and the inlet of the expansion valve 90. Accordingly, the outdoor heat exchanger 40 functions as a heating heat exchanger that heats the outside air with the refrigerant. The blower 30 a is disposed on the upstream side of the ventilation path 14. The blower 30 b is disposed on the upstream side of the ventilation path 15.

  In the present embodiment, the outdoor heat exchanger 40 and the indoor heat exchanger 50 are arranged in parallel to the top-to-bottom direction. As the blowers 30a and 30b, for example, cross flow fans are used.

  The electronic control device 130 of the present embodiment performs the cooling mode and the heating mode when executing the air conditioning control process.

  When performing the cooling mode, the electronic control device 130 performs the rotational speed control of the compressor 70 based on the target value TEO corresponding to the target blowing temperature TAO.

  When the electronic control device 130 performs the heating mode, the electronic control device 130 obtains the target value TCO of the air temperature blown out from the outdoor heat exchanger 40 based on the target blowout temperature TAO and the map data stored in the memory, and obtains the obtained value. The rotational speed control of the compressor 70 is performed based on the obtained target value TEO.

  Here, the target outlet temperature TAO and the target value TCO are in a one-to-one relationship. In the map data, the relationship between the target blowing temperature TAO and the target value TCO is stored in advance.

Next, the cooling mode and the heating mode will be described separately as the operation of the electronic control device 130 of the present embodiment.
(Cooling mode)
The electronic control device 130 rotates the blowers 30a and 30b, respectively. In addition, similarly to the cooling mode of the first embodiment, the rotational speed control of the compressor 70 is performed based on the target value TEO corresponding to the target blowing temperature TAO. For this reason, the high-temperature and high-pressure refrigerant discharged from the compressor 70 flows to the expansion valve 90 through the outdoor heat exchanger 40, and the refrigerant is decompressed by the expansion valve 90. The decompressed refrigerant returns to the compressor 70 through the indoor heat exchanger 50. Further, the electronic control unit 130 rotates the switching door 20 by the door driving motor 141 to communicate between the ventilation paths 13 and 15 and between the ventilation paths 12 and 14 as shown in FIG. Set to communicate.

  At this time, the inside air is introduced into the ventilation path 12 through the vehicle interior opening 12a by the blower 30a. The introduced inside air is cooled by the refrigerant in the indoor heat exchanger 50. The cooled inside air is guided to the ventilation path 14 side by the switching door 20. The guided air is blown out from the vehicle interior opening 14a into the vehicle interior.

  Further, the outside air is introduced into the ventilation path 13 by the blower 30b, and the introduced outside air is heated by the refrigerant in the outdoor heat exchanger 40, and the heated outside air is guided to the ventilation path 15 side by the switching door 20. Is done. The guided outside air is blown out of the passenger compartment through the outside opening 15a after passing through the blower 30b.

  As described above, the first air passage that takes in the inside air and blows the inside air into the vehicle interior opening 14a and the second air passage that takes in the outside air and blows the outside air into the outside opening 15a of the vehicle interior are formed. A ventilation pattern will be implemented.

(Heating mode)
The electronic control device 130 rotates the blowers 30a and 30b, respectively. In addition, a target value TCO corresponding to the target outlet temperature TAO is obtained from the map data in the memory, and the rotational speed of the compressor 70 is controlled based on the obtained target value TCO. Thereby, the amount of refrigerant discharged from the compressor 70 is controlled, and the detected temperature Tc of the heat exchanger temperature sensor 135 (see FIG. 4) is brought close to the target value TCO. The detected temperature Tc is the temperature of the air blown from the outdoor heat exchanger 40.

  For example, when the detected temperature Tc of the heat exchanger temperature sensor 135 is lower than the target value TCO, as the detected temperature Tc approaches the target value TCO, the rotational speed of the compressor 70 is decreased to reduce the amount of refrigerant discharged from the compressor 70. cut back. Thereafter, when the detected temperature Tc reaches the target value TCO, the rotation of the compressor 70 is stopped. Thereby, the detected temperature Tc can be brought close to the target value TCO.

  The high-temperature and high-pressure refrigerant discharged from the compressor 70 flows to the expansion valve 90 through the outdoor heat exchanger 40, and the refrigerant is decompressed by the expansion valve 90. The decompressed refrigerant returns to the compressor 70 through the indoor heat exchanger 50.

  Further, the electronic control unit 130 rotates the switching door 20 by the door driving motor 141 to communicate between the ventilation paths 13 and 14 and between the ventilation paths 12 and 15 as shown in FIG. Set to communicate.

  At this time, outside air is introduced into the ventilation path 13 through the vehicle interior opening 13a by the blower 30a. The introduced air is heated by the refrigerant in the outdoor heat exchanger 40. The heated outside air is guided to the ventilation path 14 side by the switching door 20, and the guided outside air is blown out from the vehicle interior opening 14a into the vehicle interior after passing through the blower 30a.

  Furthermore, the inside air is introduced into the ventilation path 12 through the vehicle interior opening 12a by the blower 30b. The introduced air is cooled by the indoor heat exchanger 50, and the cooled inside air is guided to the ventilation path 15 side by the switching door 20. The guided air passes through the blower 30a and is blown out of the vehicle compartment opening 15a.

  As described above, the second air blowing that forms the third air passage that takes in the inside air and blows the inside air to the vehicle interior opening 15a and the fourth air passage that takes in the outside air and blows the outside air into the vehicle interior opening 14a. A pattern will be implemented.

  According to the present embodiment described above, the electronic control device 130 can achieve both the cooling mode and the heating mode, as in the first embodiment. In addition, in the heating mode, since the inside air flows to the outdoor heat exchanger 40, the outdoor heat exchanger 40 not only collects heat from the inside air but also forms frost on the outdoor heat exchanger 40 by the heat of the inside air. Can be prevented.

(Sixth embodiment)
In the first embodiment, the example in which the vehicle exterior heat exchanger 40 is disposed on the downstream side of the air flow of the permeable membrane 60 has been described. Instead, in this embodiment, the upstream side of the air flow of the permeable membrane 60 is described. The example which has arrange | positioned the exterior heat exchanger 40 to the inside is demonstrated.

  FIG. 18 shows a cross-sectional view of the vehicle air conditioner 1 of the present embodiment. 18, the same reference numerals as those in FIG. 2 denote the same elements.

  The case 10 of the vehicle air conditioner 1 is disposed on the vehicle front side (that is, the engine room side) with respect to the firewall 2. Of the case 10, the case portion 11a is disposed on the vehicle front side with respect to the case portion 11b. The outside air introduction port 13a is disposed on the vehicle rear side with respect to the vehicle interior outside opening 15a and opens on the vehicle upper side. An inside air introduction port 13b is provided adjacent to the outside air introduction port 13a. The inside air introduction port 13b opens through the firewall 2 to the rear of the vehicle (that is, the vehicle interior side).

  In the present embodiment, a door 150 that closes one of the vehicle interior exterior opening 15a and the inside air introduction port 13b is provided. The door 150 is controlled by the electronic control unit 130 via the drive motor 150a.

  The exterior heat exchanger 40 is disposed below the outside air inlet 13a and the inside air inlet 13b in the ventilation path 13, and is disposed in parallel with the horizontal direction. The air blower 30a is disposed in front of the vehicle on the lower side with respect to the outside heat exchanger 40 in the ventilation path 15. The blower 30 b is disposed on the rear side of the vehicle on the upper side of the permeable membrane 60 in the ventilation path 14. A cross flow fan is used as a fan of the blowers 30a and 30b of the present embodiment.

  The permeable membrane 60 is disposed on the boundary wall between the ventilation paths 13 and 14. The permeable membrane 60 is arrange | positioned below with respect to the air blower 30a, and is arrange | positioned in parallel with the horizontal direction. The inside air introduction port 12a opens to the rear of the vehicle (that is, the vehicle interior side) through the firewall 2. An outside air inlet 12b is provided adjacent to the inside air inlet 12a. The outside air inlet 12b is open to the lower side.

  The indoor heat exchanger 40 is disposed on the vehicle front side with respect to the outside air introduction port 12b and the inside air introduction port 12a between the ventilation paths 12 and 14, and is disposed in parallel with the horizontal direction. In the present embodiment, a door 151 that closes one of the outside air introduction port 12b and the inside air introduction port 12a is provided. The door 151 is controlled by the electronic control unit 130 via the drive motor 151a.

  The vehicle interior opening 12a corresponds to the first vehicle interior opening, the vehicle exterior opening 12b corresponds to the first vehicle exterior opening, the door 150 corresponds to the first door, The interior opening 13b corresponds to the second interior opening, the exterior exterior opening 13a corresponds to the second exterior opening, and the door 151 corresponds to the second door.

  In this embodiment, the switching door 20 and the switching chamber 16 of FIG. 2 are abolished.

  Next, the operation of the vehicle air conditioner 1 of the present embodiment will be described.

  When executing the air conditioning control process, the electronic control device 130 performs any one of the cooling mode, the outside air cooling mode, the heating mode, the inside air heating mode, the inside / outside air mixed heating mode, and the inside air dehumidifying heating mode. . Hereinafter, the cooling mode, the outside air cooling mode, the outside air heating mode, the inside air heating mode, the inside / outside air mixed heating mode, and the inside air dehumidifying heating mode will be described separately.

(Cooling mode (Sleep mode))
The electronic control device 130 rotates the blowers 30a and 30b, respectively. The four-way valve 80 connects between the inlet of the outdoor heat exchanger 40 and the outlet of the compressor 70, and connects between the outlet of the indoor heat exchanger 50 and the inlet of the compressor 70.

  In addition to this, the drive motor 150a is controlled to rotate the door 150 to open the outside air inlet 13a and close the inside air inlet 13b. At this time, outside air is introduced into the ventilation path 13 through the outside air introduction port 13a as indicated by an arrow Yg in FIG. 19 by the blower 30a, and the introduced air flows to the outdoor heat exchanger 40 side. The flowing air is heated by the outdoor heat exchanger 40, and the heated outside air passes through the ventilation path 15 and is blown out of the vehicle interior opening 15a.

  Further, the driving motor 151a is controlled to rotate the door 151, so that the outside air inlet 12b is closed and the inside air inlet 12a is opened. At this time, the blower 30b introduces the inside air into the ventilation path 12 through the inside air introduction port 12a as indicated by an arrow Yn in FIG. 19, and the introduced inside air flows to the indoor heat exchanger 50 side. The flowed inside air is cooled by the indoor heat exchanger 50, and the cooled inside air passes through the ventilation path 14 and is blown out from the vehicle interior opening 14a into the vehicle interior.

(Outside air cooling mode)
The outside air cooling mode is the same in other operations except that the position of the door 151 is different from that in the cooling mode. Hereinafter, description of common operations between the outside air cooling mode and the cooling mode will be omitted, and different operations will be described.

  In this outside air cooling mode, the driving motor 151a is controlled to rotate the door 151, so that the outside air inlet 12b is opened and the inside air inlet 12a is closed.

  For this reason, the outside air is introduced into the ventilation path 12 through the outside air introduction port 12b as indicated by an arrow Yga in FIG. 20 by the blower 30b, and the introduced outside air flows to the indoor heat exchanger 50 side. The flowing outside air is cooled by the indoor heat exchanger 50, and the cooled outside air passes through the ventilation path 14 and is blown out from the vehicle interior opening 14 a into the vehicle interior.

  As described above, the fifth air passage (see arrow Yg in FIG. 20) that takes outside air and blows the outside air outside the vehicle interior and the sixth air passage (see arrow Yga in FIG. 20) that takes outside air and blows the outside air into the compartment. A third air blowing pattern can be implemented.

(Heating mode (inside air mode))
The electronic control device 130 rotates the blowers 30a and 30b, respectively. The four-way valve 80 connects the outlet of the outdoor heat exchanger 40 and the inlet of the compressor 70, and connects the inlet of the indoor heat exchanger 50 and the outlet of the compressor 70.

  In addition to this, the drive motor 150a is controlled to rotate the door 150 to close the outside air inlet 13a and open the inside air inlet 13b. At this time, the inside air is introduced into the ventilation path 13 through the inside air introduction port 13b as shown by an arrow Yn in FIG. 21 by the blower 30a, and the introduced air is cooled by the outdoor heat exchanger 40. Passes through the ventilation passage 15 and is blown out of the passenger compartment through the opening 15a outside the passenger compartment.

  Further, the drive motor 151a is controlled to rotate the door 151 to open the outside air inlet 12b and close the inside air inlet 12a.

  At this time, outside air is introduced by the blower 30b into the ventilation path 12 through the outside air introduction port 12b as indicated by an arrow Yga in FIG. 21, and the introduced outside air is heated by the indoor heat exchanger 50, and the heated outside air Passes through the air passage 14 and is blown out from the vehicle interior opening 14a into the vehicle interior.

(Inside / outside air heating mode)
The inside / outside air mixed heating mode is the same as the above heating mode except that the position of the door 151 is different. Hereinafter, the description of the common operation between the inside / outside air mixed heating mode and the heating mode will be omitted, and different operations will be described.

  In the inside / outside air mixed heating mode, the driving motor 151a is controlled to rotate the door 151 so that the outside air inlet 12b and the inside air inlet 12a are opened. For this reason, the blower 30b introduces the inside air into the ventilation path 12 through the inside air introduction port 12a as shown by an arrow Ygb in FIG. 22, and the outside air introduces into the ventilation path 12 through the outside air introduction port 12b as shown by an arrow Yga in FIG. Is done. The introduced inside air and outside air are heated by the indoor heat exchanger 50, and the heated air passes through the ventilation path 14 and is blown out from the vehicle interior opening 14 a into the vehicle interior.

  As described above, the seventh air passage (see arrow Ygb in FIG. 22) for taking in the inside air and blowing the inside air into the passenger compartment, and the eighth air passage for taking in the outside air and the inside air and blowing the taken outside air and the inside air into the vehicle interior. (See arrow Yga in FIG. 22) can be implemented.

(Inside air dehumidifying heating mode)
The inside air dehumidifying and heating mode is the same as the above heating mode except that the position of the door 150 is different. Hereinafter, the description of the common operation | movement between this inside air dehumidification heating mode and the said heating mode is abbreviate | omitted, and a different operation | movement is demonstrated.

  In the inside air dehumidifying and heating mode, the driving motor 150a is controlled to rotate the door 150 to open the outside air inlet 13a and close the inside air inlet 13b. At this time, the outside air is introduced into the ventilation path 13 through the outside air inlet 13a as indicated by an arrow Yg in FIG. 23 by the blower 30a, and the introduced air is cooled by the outdoor heat exchanger 40, and the cooled outside air Passes through the ventilation passage 15 and is blown out of the passenger compartment through the opening 15a outside the passenger compartment.

  Further, the driving motor 151a is controlled to rotate the door 151, so that the outside air inlet 12b is closed and the inside air inlet 12a is opened. At this time, the inside air is introduced into the ventilation path 12 through the inside air introduction port 12a as shown by an arrow Yn in FIG. 21 by the blower 30b, and the introduced inside air is heated by the indoor heat exchanger 50. Passes through the air passage 14 and is blown out from the vehicle interior opening 14a into the vehicle interior.

  According to the present embodiment described above, the doors 150 and 151 are controlled to perform not only the cooling mode and the heating mode, but also the outside air cooling mode, the outside air heating mode, the inside / outside air mixed heating mode, and the inside air dehumidifying heating mode. be able to.

  Here, in the heating mode of FIG. 21, since the inside air is introduced into the ventilation path 13 through the inside air introduction port 13b by the blower 30a and flows into the outdoor heat exchanger 40, not only the heat is recovered from the inside air in the outdoor heat exchanger 40. It is possible to prevent the outdoor heat exchanger 40 from frosting due to the heat of the inside air. Therefore, heating efficiency can be improved.

  In the inside air dehumidifying and heating mode of FIG. 23, when the outside air is cooled in the outdoor heat exchanger 40, condensed water (drain water) is generated from the outside air. For this reason, the outside air is dehumidified by the outdoor heat exchanger 40.

  Here, the outdoor heat exchanger 40 is disposed on the upstream side of the air flow with respect to the permeable membrane 60. The outside air dehumidified by the outdoor heat exchanger 40 passes through the vicinity of the permeable membrane 60. For this reason, in the permeable membrane 60, a large amount of water vapor can be moved from the inside air introduced into the ventilation path 12 through the inside air introduction port 12a to the outside air that has passed through the outdoor heat exchanger 40. Therefore, low-humidity inside air can be blown out from the vehicle interior opening 14a into the vehicle interior.

(Seventh embodiment)
In the seventh embodiment, in the sixth embodiment, a flat plate 160 is provided as a limiting member for limiting the amount of air that passes from the outdoor heat exchanger 40 to the vicinity of the surface of the permeable membrane 60.

  24 and 25 show the vehicle air conditioner 1 of the present embodiment. FIG. 24 is a perspective view of the vehicle air conditioner 1 according to the present embodiment, and FIG. 25 is a view of the state in which the vehicle air conditioner 1 according to the present embodiment is mounted on the vehicle as viewed from the left-right direction of the vehicle.

  In the vehicle air conditioner 1 of the present embodiment, the case portion 11a is disposed on the left side of the vehicle with respect to the case portion 11b. Similar to the sixth embodiment, the case portion 11b of the present embodiment houses a compressor, a four-way valve, and an expansion valve (not shown) to constitute a refrigeration cycle unit.

  The permeable membrane 60 of the present embodiment is formed in a curved shape that is convex from the blower 30a side to the blower 30b side. The flat plate 160 is disposed on the outdoor heat exchanger 40 side with respect to the permeable membrane 60, has a gap with respect to the outdoor heat exchanger 40, and is formed in a curved shape so as to be along the outdoor heat exchanger 40. ing.

  In the present embodiment configured as described above, when the cooling mode (inside air mode) shown in FIG. 26 is performed, the air volume (in FIG. Limit (see arrow Sa). For this reason, the amount of moisture that enters through the permeable membrane 60 from the outside air side that has passed through the outdoor heat exchanger 40 to the inside air side that has passed through the indoor heat exchanger 50 can be suppressed. Thereby, excessive humidification of the inside air and consumption of excess energy necessary for cooling and dehumidifying the humidified air can be suppressed.

  In the present embodiment, when performing the cooling mode in the refrigeration cycle apparatus, it is necessary to increase the air volume of the outside air that passes through the outdoor heat exchanger 40 as compared with the air volume of the inside air that passes through the indoor heat exchanger 50.

  For example, when carrying out the cooling mode, when high humidity outside air passes through the outdoor heat exchanger 40, or when the flat plate 160 is not provided, a large amount of moisture enters the inside air side from the outside air through the permeable membrane 60. .

  On the other hand, in the present embodiment, as described above, the flat plate 160 is used to limit the air volume of the outside air that passes through the surface of the permeable membrane 60. For this reason, it is possible to limit the amount of moisture entering the inside air side through the permeable membrane 60 from the outside air side. Therefore, it is possible to achieve both the implementation of the cooling mode in the refrigeration cycle apparatus and the restriction of the amount of water entering from the outside air side to the inside air side.

  As the distance between the permeable membrane 60 and the flat plate 160 is reduced, the amount of air passing through the surface of the permeable membrane 60 is suppressed. In addition, the dehumidifying ability in the heating mode (see FIG. 27) in which the inside air is heated and blown into the passenger compartment is also suppressed. For this reason, it is desirable to bring the flat plate 160 close to the permeable membrane 60 within a range in which the dehumidifying performance in the heating mode can be ensured.

(Eighth embodiment)
In the present embodiment, an example will be described in which cowls that rectify the flow of air are respectively provided in the outside air introduction ports 12b and 13a and the outside opening 15a of the vehicle air conditioner 1 of the seventh embodiment.

  28 and 29 show the configuration of the vehicle air conditioner 1 according to this embodiment. As shown in FIGS. 28 and 29, cowls 170, 171 and 172 are provided at the outside air inlets 13a and 12b and the vehicle interior opening 15a.

  The cowl 171 is a guide that guides outside air from the outside air introduction port (hereinafter referred to as a vehicle outside air introduction port) of the automobile to the outside air introduction port 12b. The vehicle outside air introduction port is disposed at a portion where the air pressure becomes positive with respect to the air pressure in the outside air introduction port 12b by the air flow passing around the vehicle when the vehicle is running.

  The cowl 170 is a guide for guiding outside air from the vehicle outside air inlet to the outside air inlet 13a. The vehicle outside air introduction port is disposed at a portion where the air pressure becomes positive with respect to the air pressure in the outside air introduction port 13a by the air flow passing around the vehicle when the vehicle is running.

  The cowl 172 is a guide that guides air from the vehicle interior opening 15a to an exhaust port of the automobile (hereinafter referred to as a vehicle exhaust port). The vehicle exhaust port is disposed at a portion where the air pressure is negative with respect to the air pressure inside the vehicle interior opening 15a due to the air flow passing around the vehicle when the vehicle is running.

  In addition, as a vehicle outside air inlet of this embodiment, it is provided in the cover part of an engine room in the front part of the advancing direction among vehicles, or a front engine type vehicle, for example. The vehicle exhaust port is provided at the bottom of the vehicle.

In the present embodiment configured as described above, a cooling mode in which outside air is taken from the vehicle outside air introduction port through the outside air introduction port 13a and the taken outside air is exhausted from the vehicle interior opening 15a to the outside of the vehicle compartment through the vehicle exhaust port (FIG. 29). (See below)
The cowl 170 can guide outside air from the vehicle outside air introduction port to the outside air introduction port 13a. In addition, the cowl 172 can guide the exhaust blown from the vehicle interior opening 15a to the vehicle exhaust port regardless of the wind pressure (that is, the ram pressure) applied from the front of the vehicle when the vehicle is traveling.

  Similarly, also in the heating mode (see FIG. 30) in which outside air is taken in from the vehicle outside air introduction port and exhausted outside the vehicle compartment from the vehicle exhaust port, the cowl 170 can guide outside air from the vehicle outside air introduction port to the outside air introduction port 13a. . Exhaust air that the cowl 172 blows out from the vehicle interior opening 15a can be guided to the vehicle exhaust port.

  Further, in the heating mode (see FIG. 31) in which outside air is taken in from the vehicle outside air introduction port through the outside air introduction port 12b and blown out from the vehicle interior opening 14a to the vehicle interior (see FIG. 31), the cowl 171 sends outside air from the vehicle outside air introduction port to the outside air introduction port 12b. Can lead to.

  According to the present embodiment described above, the cowl 170 (171) is a guide for guiding outside air from the vehicle outside air introduction port to the outside air introduction port 12b (13a). The vehicle outside air introduction port is arranged at a portion where the air pressure becomes positive with respect to the air pressure in the outside air introduction port 12b (13a) by the air flow passing around the vehicle when the vehicle is running. For this reason, it is possible to flow outside air from the vehicle outside air introduction port to the outside air introduction port 12b (13a) by actively using the ram pressure.

  Further, the cowl 172 is a guide that guides air from the vehicle exterior opening 15a to the vehicle exhaust port. The vehicle exhaust port is disposed at a portion where the air pressure is negative with respect to the air pressure inside the vehicle interior opening 15a due to the air flow passing around the vehicle when the vehicle is running. For this reason, air can flow from the vehicle interior opening 15a to the vehicle exhaust port regardless of the ram pressure.

(Other embodiments)
In the above-described fourth embodiment, the example in which the dehumidifying means is not provided on the boundary wall between the ventilation paths 12 and 15 has been described, but instead, the boundary wall between the ventilation paths 12 and 15 is used as the dehumidifying means. A permeable membrane 60 may be provided. Further, instead of the permeable membrane 60, the heat exchanger 61 in FIG. 11 or the Peltier element 62 in FIG. 13 may be provided.

  In the sixth to eighth embodiments described above, the example in which the permeable membrane 60 as the dehumidifying means is provided on the boundary wall between the ventilation paths 12 and 15 has been described, but instead of this, the heat exchanger of FIG. 61 or the Peltier element 62 shown in FIG. 13 may be provided.

  In the above-described first to fourth and sixth to eighth embodiments, when the outdoor air is cooled by the outdoor heat exchanger 40 in the heating mode, the outdoor heat as in the following (1) and (2). The exchanger 40 may be prevented from frosting.

  (1) For example, in the first embodiment described above, the temperature / humidity sensor 41 that detects the temperature and humidity on the upstream side of the air flow of the outdoor heat exchanger 40 and the temperature sensor 42 that detects the temperature of the outdoor heat exchanger 40. And add. Then, the electronic control device 130 calculates the frost point of the air (outside air) flowing through the outdoor heat exchanger 40 based on the humidity and temperature detected by the temperature / humidity sensor 41. Here, the frost point is the dew point temperature when the dew point temperature is lower than zero degrees. Then, the compressor 70 is controlled so that the temperature detected by the temperature sensor 42 is higher than the calculated frost point. For example, the temperature of the outdoor heat exchanger 40 can be made higher than the frost point by reducing the amount of refrigerant flowing from the compressor 70 to the outdoor heat exchanger 40. Thereby, frost formation on the outdoor heat exchanger 40 can be avoided.

  Here, as the temperature sensor 42, a temperature sensor that detects the temperature on the downstream side of the air in the outdoor heat exchanger 40 or a temperature sensor that detects the temperature of the air blown from the outdoor heat exchanger 40 may be used.

  (2) For example, in the first embodiment described above, in addition to the temperature / humidity sensor 41 and the temperature sensor 42, the inside air introduction port 13b for introducing the inside air into the ventilation path 13 and the inside air introduced from the inside air introduction port 13b A door 13c for changing the ratio between the introduction amount and the outside air introduction amount introduced from the outside air introduction port 13b and an electric motor 13d for rotating the door 13c are added. Then, the electronic control device 130 calculates the frost point of the air (outside air) flowing through the outdoor heat exchanger 40 based on the humidity and temperature detected by the temperature / humidity sensor 41. Then, the position of the door 13c is adjusted by the electric motor 13d so that the detected temperature of the temperature sensor 42 becomes higher than the calculated frost point, and the ratio between the inside air introduction amount and the outside air introduction amount is controlled.

  For example, when the temperature detected by the temperature sensor 42 is lower than the frost point of the air flowing through the outdoor heat exchanger 40, the position of the door 13c is increased by the electric motor 13d so as to increase the inside air introduction amount of the air amount introduced into the ventilation path 13. Adjust. Thereby, the temperature of the air flowing through the outdoor heat exchanger 40 can be increased. Therefore, the temperature of the outdoor heat exchanger 40 can be raised above the frost point. Thereby, frost formation on the outdoor heat exchanger 40 can be avoided.

  In the above-described first to eighth embodiments, the example in which the vehicle air conditioner 1 according to the present invention is disposed on the engine room 3 side with respect to the firewall 2 has been described, but instead, as shown in FIG. The vehicle air conditioner 1 of the present invention may be arranged from the engine room 3 side to the vehicle interior 4 side through the through hole 2a of the firewall 2. Or as shown in FIG. 35, you may arrange | position the vehicle air conditioner 1 of this invention to the vehicle interior 4 side with respect to the firewall 2. As shown in FIG. The vehicle air conditioner 1 shown in FIGS. 34 and 35 is a vehicle air conditioner.

  In the first to eighth embodiments described above, the example using the sensor that detects the air temperature Te blown out from the indoor heat exchanger 50 as the heat exchanger temperature sensor 134 has been described. As the heat exchanger temperature sensor 134, a sensor that detects the air flow downstream surface temperature of the indoor heat exchanger 50 may be used.

  Similarly, the heat exchanger temperature sensor 135 is not limited to a sensor that detects the air temperature Tc blown from the outdoor heat exchanger 40, but a sensor that detects a surface temperature on the downstream side of the air flow in the outdoor heat exchanger 40 is used. May be.

  In the seventh and eighth embodiments described above, the case portion 11a is disposed on the left side of the vehicle with respect to the case portion 11b. Instead, the case portion 11a is disposed on the right side of the vehicle with respect to the case portion 11b. You may arrange in.

  In the above-described first to fourth embodiments, the example in which the sirocco fan is used as the blowers 30a and 30b has been described. Any of a mixed flow fan and a cross flow fan may be used.

  In the above-described fifth to eighth embodiments, examples using cross flow fans as the blowers 30a and 30b have been described. However, the present invention is not limited thereto, and the axial fans other than the cross flow fans are used as the blowers 30a and 30b. Any of a turbo fan, a mixed flow fan, and a sirocco fan may be used, or a combination thereof.

  In the above-described eighth embodiment, the example in which the cowl 171 (170) is provided as a guide for guiding the outside air from the vehicle outside air introduction port to the outside air introduction port 12b (13a) has been described. A pipe may be provided as a guide for guiding the outside air from the introduction port to the outside air introduction port 12b (13a). Similarly, instead of the cowl 172, a pipe may be provided as a guide for guiding air from the vehicle exterior opening 15a to the vehicle exhaust port.

  In addition, when implementing this invention, you may implement combining 2 or more embodiment which can be combined suitably among the above-mentioned 1st-8th embodiment and each other embodiment.

DESCRIPTION OF SYMBOLS 1 Vehicle air conditioner 2 Firewall 10 Case 11a Case part 11b Case part 12 Ventilation path 13 Ventilation path 14 Ventilation path 15 Ventilation path 20 Switching door 30a Blower 30b Blower 40 Outdoor heat exchanger 50 Indoor heat exchanger 60 Permeation membrane 61 Heat exchange 62 Peltier element 70 Compressor 80 Four-way valve 90 Expansion valve

Claims (28)

A first air blowing pattern capable of forming a first air passage that takes air in the passenger compartment and blows air into the passenger compartment, and a second air passage that takes air outside the passenger compartment and blows air out of the passenger compartment, and A second air blowing pattern capable of forming a third air passage that takes air inside the vehicle interior and blows air outside the vehicle compartment and a fourth air passage that takes air outside the vehicle compartment and blows air into the vehicle interior, respectively. And a blowing pattern switching mechanism (20, 30a, 30b) for switching from one blowing pattern to the other blowing pattern,
1st heat exchanger (40, which comprises the refrigerating-cycle apparatus which circulates a refrigerant | coolant, and heat-exchanges between the air which flows into either one of the said 1st, 4th ventilation paths, and the said refrigerant | coolant. 50),
2nd heat exchange which comprises the said refrigeration cycle apparatus with the said 1st heat exchanger, and heat-exchanges between the air and refrigerant which flow through any one of the said 2nd, 3rd ventilation path. A vessel (40, 50),
One of the first and second heat exchangers heats the air passing through the one heat exchanger with the refrigerant, and one of the first and second heat exchangers. The other air heat exchanger other than the heat exchanger cools the air passing through the other heat exchanger with the refrigerant. In the first air blowing pattern, the first heat exchanger cools the air inside the vehicle interior with the refrigerant, and the second heat exchanger heats the air outside the vehicle compartment with the refrigerant. To cool the passenger compartment,
In the second air blowing pattern, the first heat exchanger heats the air outside the vehicle cabin with a refrigerant, and the second heat exchanger cools the air inside the vehicle cabin with a refrigerant. The vehicle air conditioner according to claim 1, wherein the vehicle interior is heated.   In the first air blowing pattern, the first heat exchanger heats the air inside the vehicle interior with the refrigerant, and the second heat exchanger cools the air outside the vehicle interior with the refrigerant. The vehicle air-conditioning apparatus according to claim 2, wherein the vehicle interior is heated by the operation. The air blowing pattern switching mechanism includes the first and second air blowing patterns, a fifth air passage that takes air outside the passenger compartment and blows air outside the passenger compartment, and takes air outside the passenger compartment into the passenger compartment. Implement any one air blowing pattern among the third air blowing patterns that form the sixth air flow path for blowing air,
In the third air blowing pattern, the first heat exchanger cools the air passing through the sixth air passage by the refrigerant, and the second heat exchanger is cooled by the refrigerant. The vehicle air conditioner according to any one of claims 1 to 3, wherein the vehicle interior is cooled by heating air passing through the air passage. The air blowing pattern switching mechanism includes the first, second, and third air blowing patterns, a seventh air passage that takes in air inside the vehicle interior and blows air outside the vehicle interior, air outside the vehicle interior, and the vehicle interior. A fourth air blowing pattern that forms an eighth air passage that takes in the air and blows it into the vehicle interior, and implements any one air blowing pattern,
In the fourth air blowing pattern, the first heat exchanger heats the air passing through the eighth air passage by the refrigerant, and the second heat exchanger uses the refrigerant to form the seventh heat exchanger. The vehicle air conditioner according to any one of claims 1 to 4, wherein the vehicle interior is heated by cooling air passing through the air passage. An inside / outside air switching adjustment door (13c) that adjusts the ratio of the air outside the passenger compartment and the air inside the passenger compartment out of the air flowing through the eighth air passage;
Temperature control for controlling the inside / outside air adjustment door so that the temperature of the air passing through the second heat exchanger becomes equal to or higher than the frost point by adjusting the ratio of the air outside the vehicle compartment and the air inside the vehicle compartment. 6. The vehicle air conditioner according to claim 5, further comprising means (130). The refrigeration cycle apparatus is configured together with the first and second heat exchangers, and includes a compressor (70) for compressing the refrigerant,
Temperature control means for controlling the amount of refrigerant flowing from the compressor to the second heat exchanger so that the temperature of the second heat exchanger is equal to or higher than the frost point of the air flowing to the second heat exchanger. 130) The vehicle air conditioner according to any one of claims 1 to 5, further comprising:   The vehicle air conditioner according to any one of claims 1 to 7, further comprising a dehumidifying member (60, 61, 62) for dehumidifying air passing through the first air passage.   The vehicle air conditioner according to claim 8, wherein the dehumidifying member is provided on a boundary wall (101) between the first and second air passages.   The dehumidifying member is provided in the second air passage from the first air passage so that the humidity of the air in the first air passage and the humidity of the air in the second air passage are balanced. The vehicle air conditioner according to claim 8, wherein the air conditioner is a permeable membrane (60) for moving water vapor in the air. The dehumidifying member is a heat exchanger (61) for exchanging heat between the air in the first air passage and the air in the second air passage,
The heat exchanger generates the dew condensation water on the first air passage side when the air in the second air passage absorbs heat from the air in the first air passage. The vehicle air conditioner according to claim 8, wherein the air passing through the road is dehumidified.   The said dehumidification member is a Peltier element (62) which absorbs heat from the air passing through the first air passage and dissipates heat to the air passing through the second air passage. Vehicle air conditioner.   The vehicle air conditioner according to any one of claims 8 to 12, wherein the dehumidifying member is arranged on the air downstream side of the second heat exchanger (40).   The vehicle air conditioner according to any one of claims 8 to 12, further comprising a restriction member (160) for restricting an amount of air flowing from the inlet side of the second air passage to the dehumidifying member side. .   The vehicle air conditioner according to claim 14, wherein the restricting member is formed in a plate shape with a gap with respect to the dehumidifying member and along the dehumidifying member. An outside air introduction guide (170, 171) that guides air outside the vehicle compartment from an outside air introduction port of the automobile to an inlet of at least one of the second, fourth, fifth, sixth, and eighth ventilation paths. )
The outside air introduction port is disposed at a portion where the air pressure becomes positive with respect to the air pressure in the inlet of the one air passage due to the air flow passing around the vehicle when the vehicle is running. The vehicle air conditioner according to claim 5. An outside air discharge guide (172) that guides air from the one air passage to an outside air outlet of the vehicle at the outlet of at least one air passage of the second, third, fifth, and seventh air passages. Is provided,
The outside air discharge port is disposed at a portion where the air pressure is negative with respect to the air pressure in the outlet of the one air passage due to an air flow passing around the vehicle when the vehicle is running. The vehicle air conditioner according to claim 5 or 16. A guide passage (17) for guiding the air blown from the third air passage to the inlet of the fourth air passage,
In the second air blowing pattern, the air blown from the third air passage by the guide passage is guided to the inlet of the fourth air passage, so that the first heat exchanger is cooled by the refrigerant. And the second heat exchanger cools the air passing through the third air passage with a refrigerant, thereby heating the vehicle interior. The vehicle air conditioner according to any one of claims 1 to 17.   The vehicle according to any one of claims 1 to 18, wherein the components of the refrigeration cycle apparatus including the first and second heat exchangers are accommodated in one case (10). Air conditioner.   The said one case is arrange | positioned from the vehicle interior side to the vehicle interior side through the partition wall (2) which partitions between the vehicle exterior and vehicle interior among motor vehicles, The vehicle interior side is characterized by the above-mentioned. Vehicle air conditioner.   20. The vehicle air conditioner according to claim 19, wherein the one case is disposed outside the vehicle compartment with respect to a partition wall (2) that partitions the exterior of the vehicle and the interior of the vehicle. apparatus.   20. The vehicle air conditioner according to claim 19, wherein the one case is disposed on the vehicle interior side with respect to a partition wall (2) that partitions the exterior of the vehicle and the interior of the vehicle. apparatus. A first ventilation path (12) through which air in the passenger compartment passes;
A second ventilation path (13) through which air outside the passenger compartment passes;
A third ventilation path (14) through which air flows in the vehicle interior;
A fourth ventilation path (15) through which air flows outside the vehicle compartment;
An indoor heat exchanger (50) that constitutes the refrigeration cycle apparatus, and exchanges heat of the air flowing through the third ventilation path with the refrigerant;
An outdoor heat exchanger (40) that constitutes the refrigeration cycle apparatus and exchanges heat of the air flowing through the second ventilation path with the refrigerant;
The air flow pattern switching mechanism is configured, and air passing through one of the first and second ventilation paths is guided to the inlet side of the third ventilation path, and the first and second ventilation paths are guided. A switching door (20) for guiding the air passing through the other ventilation path other than the one ventilation path to the inlet side of the fourth ventilation path;
A compressor (70) constituting the refrigeration cycle apparatus and compressing the refrigerant;
Constituting the refrigeration cycle apparatus, connecting between an inlet of one of the indoor heat exchanger and the outdoor heat exchanger and an outlet of the compressor, the indoor heat exchanger and the A four-way valve (80) for connecting between the outlet of the heat exchanger other than the one of the outdoor heat exchangers and the inlet of the compressor,
The four-way valve connects the inlet of the outdoor heat exchanger and the outlet of the compressor to connect between the outlet of the indoor heat exchanger and the inlet of the compressor, and the switching door is the first door. When the air passing through the first ventilation path is guided to the inlet side of the third ventilation path and the air passing through the second ventilation path is guided to the inlet side of the fourth ventilation path, the indoor heat An exchanger functions as the first heat exchanger, and the outdoor heat exchanger functions as the second heat exchanger to implement the first air blowing pattern,
The four-way valve connects between the inlet of the indoor heat exchanger and the outlet of the compressor to connect between the outlet of the outdoor heat exchanger and the inlet of the compressor, and the switching door is the first door. When the air passing through the second ventilation path is guided to the inlet side of the third ventilation path and the air passing through the first ventilation path is guided to the inlet side of the fourth ventilation path, the indoor heat The exchanger functions as the first heat exchanger, and the outdoor heat exchanger functions as the second heat exchanger to implement the second air blowing pattern. The vehicle air conditioner according to any one of 22. The air blowing pattern switching mechanism is
A first blower (30b) that sucks air from one of the first and second ventilation paths and blows it out toward the fourth ventilation path;
24. A second blower (30a) that sucks air from one of the first and second ventilation paths and blows it out to the third ventilation path side. Vehicle air conditioner. A first ventilation path (12) through which air in the passenger compartment passes;
A second ventilation path (13) through which air outside the passenger compartment passes;
A third ventilation path (14) through which air flows in the vehicle interior;
A fourth ventilation path (15) through which air flows outside the vehicle compartment;
A cooling heat exchanger (50) that constitutes the refrigeration cycle apparatus and cools the air passing through the first ventilation path with the refrigerant;
A heat exchanger (40) for heating that constitutes the refrigeration cycle apparatus and heats the air passing through the second ventilation path with the refrigerant;
The ventilation pattern switching mechanism is configured, and the air that has passed through one of the cooling heat exchanger and the heating heat exchanger passes through one of the third and fourth ventilation paths. One of the third and fourth ventilation passages that guides air to the inlet side and passes through the other heat exchanger other than one of the cooling heat exchanger and the heating heat exchanger. A switching door (20) leading to the inlet side of the other ventilation path other than the ventilation path of
When the switching door guides the air flowing through the first ventilation path to the third ventilation path and guides the air passing through the second ventilation path to the fourth ventilation path, the cooling heat An exchanger functions as the first heat exchanger, and the outdoor heat exchanger functions as the second heat exchanger to implement the first air blowing pattern,
When the switching door guides air passing through the first ventilation path to the fourth ventilation path side and guides air passing through the second ventilation path to the third ventilation path side, the heating door The heat exchanger functions as the first heat exchanger, and the cooling heat exchanger functions as the second heat exchanger to implement the second air blowing pattern. The vehicle air conditioner according to any one of 1 to 22. The air blowing pattern switching mechanism is
A first blower (30b) that sucks air that has passed through one of the first and second ventilation paths and blows it out to an inlet side of the third ventilation path;
A second blower (30a) that sucks air that has passed through one of the first and second ventilation paths and blows it out to an inlet side of the fourth ventilation path. Item 26. The vehicle air conditioner according to Item 25. First and second vehicle interior openings (13b, 12a) for introducing air in the vehicle interior;
First and second vehicle exterior openings (13a, 12b) for introducing air outside the vehicle compartment;
A first door (151) for closing one of the first vehicle interior opening (12a) and the first vehicle exterior opening (12b);
A second door (150) for closing one of the second vehicle interior opening (13b) and the second vehicle exterior opening (13a);
A first ventilation path (12) through which air introduced from at least one of the first vehicle interior opening and the first vehicle exterior opening;
A second ventilation path (13) through which air introduced from at least one of the second vehicle interior opening and the second vehicle exterior opening;
A third ventilation path (14) for flowing air that has passed through the first ventilation path into the vehicle interior;
A fourth ventilation path (15) for flowing air that has passed through the second ventilation path to the outside of the passenger compartment;
An indoor heat exchanger (50) that constitutes the refrigeration cycle device and exchanges heat of the air passing through the first ventilation path with the refrigerant;
An outdoor heat exchanger (40) that constitutes the refrigeration cycle apparatus and that exchanges heat between the air passing through the second ventilation path using the refrigerant;
A compressor (70) constituting the refrigeration cycle apparatus and compressing the refrigerant;
Constituting the refrigeration cycle apparatus, connecting between an inlet of one of the indoor heat exchanger and the outdoor heat exchanger and an outlet of the compressor, the indoor heat exchanger and the A four-way valve (80) for connecting between the outlet of the heat exchanger other than the one of the outdoor heat exchangers and the inlet of the compressor,
When the four-way valve connects between the inlet of the outdoor heat exchanger and the outlet of the compressor and connects between the outlet of the indoor heat exchanger and the inlet of the compressor, the indoor heat exchange And the outdoor heat exchanger functions as the second heat exchanger to implement the first air blowing pattern,
When the four-way valve connects between the inlet of the indoor heat exchanger and the outlet of the compressor and connects between the outlet of the outdoor heat exchanger and the inlet of the compressor, the indoor heat exchange An apparatus functions as the first heat exchanger, and the outdoor heat exchanger functions as the second heat exchanger to implement the second air blowing pattern. The vehicle air conditioner according to any one of the above. The air blowing pattern switching mechanism is
A first blower (30b) that sucks air from the first ventilation path and blows it out to the outlet side of the third ventilation path;
27. The vehicle air conditioner according to claim 26, further comprising: a second blower (30a) that sucks air from the second ventilation path and blows it out to an outlet side of the fourth ventilation path.

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