JP7147228B2 - Air conditioner - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner in which components such as a refrigerating cycle are housed inside a housing.

2. Description of the Related Art Conventionally, as one aspect of an air conditioner, an air conditioner in which constituent devices such as a vapor compression refrigeration cycle device and a blower are housed inside a housing has been developed. Such an air conditioner is arranged, for example, between a seating surface portion of a seat arranged in a vehicle and a floor surface, and uses the seat as a space to be air-conditioned to improve the comfort of the seat.

As an invention relating to such an air conditioner, for example, the invention described in Patent Document 1 is known. The air conditioner described in Patent Literature 1 accommodates a refrigeration cycle including a condenser and an evaporator, and one centrifugal fan inside a main body case.

In the air conditioner according to Patent Document 1, the centrifugal fan is arranged in the central portion inside the body case, and the condenser and the evaporator are arranged so as to surround the centrifugal fan. The air conditioner can heat or cool the air blown from the centrifugal fan by exchanging heat with a condenser or an evaporator that constitutes a refrigerating cycle, and supply the air to the seat.

JP 2017-187218 A

Here, in the air conditioner described in Patent Literature 1, blown air is supplied from one centrifugal fan to the condenser and evaporator of the refrigeration cycle. Therefore, the air flow balance between the condenser side and the evaporator side is determined by the ventilation resistance on the downstream side of the blown air flow including the duct. As a result, it is conceivable that in the air conditioner according to Patent Document 1, it would be extremely difficult to balance the refrigerating cycle.

In addition, the main body of the air conditioner described in Patent Document 1 is arranged in a limited space between the seating surface of the seat and the floor, and various components such as a refrigeration cycle and a blower are all housed inside the main body case. is doing. Therefore, when improving the stability of the balance of the refrigerating cycle, it is necessary to pay sufficient attention to increasing the size of the air conditioner itself.

The present invention has been made in view of these points, and relates to an air conditioner in which components such as a refrigerating cycle are accommodated inside a housing, and the stability of the refrigerating cycle is improved while suppressing an increase in the size of the device. An object of the present invention is to provide an air conditioner.

In order to achieve the object, the air conditioner according to claim 1,
a housing (10);
A compressor (21) that compresses and discharges the refrigerant, a condenser (22) that heats the air by releasing heat from the high-pressure refrigerant discharged from the compressor, and a decompression section (23) that decompresses the refrigerant flowing out of the condenser. ), and an evaporator (24) for evaporating the low-pressure refrigerant decompressed by the decompression unit to cool the air, the refrigeration cycle device (20) housed inside a housing,
a first blower (30) for blowing air sucked through at least one of the condenser and the evaporator inside the housing;
a second blower (31) for blowing air sucked through at least one of the condenser and the evaporator inside the housing;
a warm air side ventilation passage (17) through which warm air (WA) made of air heated when passing through the condenser flows inside the housing;
Inside the housing, a cold air side air passage (18) is separated from the warm air side air passage and through which cold air (CA) composed of air cooled when passing through the evaporator flows;
a warm air switching unit (35) for switching between a ventilation passage for guiding the warm air (WA) to the air-conditioned space and a ventilation passage for guiding the warm air to the outside of the air-conditioned space;
With respect to the flow of cold air, it has a cold air switching unit (40) for switching between a ventilation passage leading the cold air to the air-conditioned space and a ventilation passage leading the cold air to the outside of the air-conditioned space,
The hot air switching unit is arranged downstream of any one of the condenser, the first fan, and the second fan with respect to the flow of hot air in the hot air side ventilation passage ,
The cold air switching unit is disposed downstream of the other of the evaporator, the first fan, and the second fan with respect to the flow of cold air in the cold air ventilation passage .

That is, the air conditioner accommodates a refrigeration cycle device, a first fan, a second fan, a hot air switching unit, and a cold air switching unit inside a housing, and the cold air switching unit , cool air cooled by the evaporator can be supplied to the air-conditioned space, and warm air heated by the condenser can be blown to the outside of the air-conditioned space by the warm air switching unit. In other words, the air conditioner can cool the space to be air-conditioned with a configuration in which the components are compactly housed inside the housing.

In addition, the air conditioner supplies hot air heated by the condenser to the air-conditioned space by the hot air switching unit, and supplies cold air cooled by the evaporator to the air-conditioned space by the cold air switching unit. Air can be blown outside. That is, the air conditioner can realize heating of the space to be air-conditioned with a configuration in which the components are compactly housed inside the housing.

Further, according to the air conditioner, since the blowing capacity of the first blower and the second blower can be individually adjusted, the amount of heat released by the refrigerant in the condenser of the refrigeration cycle device and the amount of heat absorbed by the refrigerant in the evaporator can be adjusted. , can be adjusted appropriately. As a result, the air conditioner can easily balance the refrigeration cycle device and operate stably.

In addition, in the housing of the air conditioner, the first fan and the second fan are arranged downstream of the condenser and the evaporator with respect to air flow. Therefore, according to the air conditioner, it is possible to increase the degree of freedom in designing the arrangement of the first fan and the second fan inside the housing, and to suppress the enlargement of the air conditioner. In addition, the hot air switching unit is arranged downstream of any one of the condenser, the first blower, and the second blower with respect to the flow of hot air, and the switching unit for cold air is arranged with respect to the flow of cold air, It is arranged downstream of the other of the evaporator, the first fan, and the second fan. As a result, the air conditioner reliably realizes the switching of hot air flow by the hot air switching section and the cold air flow switching by the cold air switching section, and accommodates each component device compactly inside the housing. can do.

It should be noted that the reference numerals in parentheses of each means described in this column and claims indicate the correspondence with specific means described in the embodiments described later.

1 is an external perspective view of an air conditioner according to a first embodiment; FIG. It is a perspective view showing the state where the upper cover of the air conditioner concerning a 1st embodiment was removed. It is a perspective view showing the state where the 1st fan of the air conditioner concerning a 1st embodiment and the 2nd fan were removed. It is a top view showing an internal configuration of an air conditioner concerning a 1st embodiment. FIG. 5 is a cross-sectional view showing a VV cross section in FIG. 4; FIG. 5 is a sectional view showing a VI-VI section in FIG. 4; It is a block diagram showing a control system of an air conditioner concerning a 1st embodiment. Fig. 2 is a plan view showing the internal configuration of the air conditioner in the heating mode according to the first embodiment; FIG. 7 is an explanatory diagram showing the flow of air toward the supply port side in the heating mode according to the first embodiment; FIG. 5 is an explanatory diagram showing the flow of air toward the exhaust port side in the heating mode according to the first embodiment; FIG. 3 is a plan view showing the internal configuration of the air-conditioning apparatus according to the first embodiment in an air mix mode; FIG. 5 is an explanatory diagram showing the flow of air toward the supply port side in the air mix mode according to the first embodiment; FIG. 7 is an explanatory diagram showing the flow of air toward the exhaust port side in the air mix mode according to the first embodiment; It is a top view which shows the internal structure of the air conditioner which concerns on 2nd Embodiment. FIG. 15 is a cross-sectional view showing the XV-XV cross section in FIG. 14; FIG. 15 is a cross-sectional view showing the XVI-XVI cross section in FIG. 14; FIG. 10 is an explanatory diagram showing the flow of air toward the supply port side in the heating mode according to the second embodiment; FIG. 10 is an explanatory diagram showing the flow of air toward the exhaust port side in the heating mode according to the second embodiment;

Embodiments will be described below with reference to the drawings. In the following embodiments, the same or equivalent portions are denoted by the same reference numerals in the drawings.

Also, the arrows indicating up and down, left and right, and front and back in each figure are used in a three-dimensional space orthogonal coordinate system (for example, X-axis, Y-axis, Z-axis) in order to facilitate understanding of the positional relationship of each component in the embodiment. ) is exemplified as a criterion corresponding to Therefore, the posture and the like of the air conditioner according to the present invention are not limited to the states shown in the drawings, and can be changed as appropriate.

(First embodiment)
The air conditioner 1 according to the first embodiment is used as a seat air conditioner for enhancing the comfort of an occupant sitting on a seat, which is a space to be air-conditioned, which is a seat arranged in the passenger compartment of a vehicle. The air conditioner 1 is arranged in a small space between the seating surface of the seat and the floor surface of the passenger compartment, and supplies conditioned air (for example, cold air or warm air) through a duct arranged in the seat. By doing so, it is configured to enhance the comfort of the passenger sitting on the seat.

As shown in FIGS. 1 to 3, the air conditioner 1 according to the first embodiment includes a vapor compression refrigeration cycle device 20, a first fan 30, a second fan 31, and a warm air switching unit 35. , and the cold air switching unit 40 are housed inside the housing 10 .

Therefore, the air conditioner 1 adjusts the temperature of the air blown by the operation of the first blower 30 and the second blower 31 by the refrigeration cycle device 20, and supplies the air to the passenger sitting on the seat via a duct or the like arranged on the seat. can do.

First, a specific configuration of the housing 10 will be described with reference to FIGS. 1 to 3. FIG. 2 shows a state in which the upper cover 11 is removed from the state shown in FIG. 1, and FIG. 3 shows a state in which the first blower 30 and the second blower 31 are removed from the state shown in FIG.

In the air conditioner 1, the housing 10 is formed in a rectangular parallelepiped shape that can be arranged between the seating surface of the seat and the floor surface of the passenger compartment. As shown in FIG. It is composed of

The upper cover 11 constitutes the upper surface of the housing 10 and is attached so as to close the opening of a box-shaped body case 15 with an open top. The upper cover 11 is formed with a hot air vent 12 , a cold air vent 13 , a supply port 14 and an exhaust port 16 .

The hot air vent 12 is opened on the right side of the upper cover 11 . The hot air vent 12 is a vent for sucking the air outside the housing 10 (that is, the air inside the vehicle compartment) into the housing 10 as the first blower 30 or the like, which will be described later, operates. .

As shown in FIGS. 1 to 6, a condenser 22 of the refrigeration cycle device 20 is arranged inside the housing 10 at a position below the hot air vent 12 . Therefore, the air sucked from the hot air vent 12 is heated by exchanging heat with the high-pressure refrigerant when passing through the condenser 22, and is supplied as the hot air WA.

The cold air vent 13 is opened on the left side of the upper cover 11 and arranged symmetrically with the warm air vent 12 . Like the warm air vent 12, the cold air vent 13 is a vent for sucking the air outside the housing 10 into the interior when the first blower 30 or the like operates.

An evaporator 24 of the refrigeration cycle device 20 is arranged at a position below the cool air vent 13 inside the housing 10 . Therefore, the air sucked from the cool air vent 13 is cooled while passing through the evaporator 24 and supplied as cool air CA.

A supply port 14 is opened in the center of the rear side of the upper cover 11 . The supply port 14 is a vent for supplying conditioned air (for example, warm air WA, cold air CA, mixed air MA) temperature-controlled by the refrigeration cycle device 20 in the air conditioner 1 to the air-conditioned space.

Although illustration is omitted, the end of the duct is connected to the supply port 14 . The ducts are arranged along the sides of the seat and are configured to guide the conditioned air to the space in the seat where the occupant sits. The space in the seat where the passenger is seated corresponds to the air-conditioned space.

In addition, an exhaust port 16 is opened in the central portion of the front side of the upper cover 11 . The exhaust port 16 is an opening through which part of the air temperature-controlled by the refrigeration cycle device 20 is exhausted inside the housing 10 . The air blown out from the exhaust port 16 is sent to the outside of the air-conditioned space.

The body case 15 constitutes a main part of the housing 10 and is formed in a box shape with an open top. As shown in FIGS. 2 to 6, inside the body case 15, components such as the refrigeration cycle device 20 and the first blower 30 are arranged.

As shown in FIGS. 5, 6, etc., inside the body case 15, a warm air side ventilation path 17 and a cold air side ventilation path 18 are formed. The warm-air-side ventilation passage 17 is a ventilation passage through which the hot air WA heated by the condenser 22 flows, and the cold-air-side ventilation passage 18 is a ventilation passage through which the cold air CA cooled by the evaporator 24 is distributed. be. Both the warm air side ventilation path 17 and the cold air side ventilation path 18 are formed between the housing bottom surface 15A of the main body case 15 and the components.

Next, the configuration of the refrigeration cycle device 20 in the air conditioner 1 will be described with reference to the drawings. As described above, the refrigerating cycle device 20 is housed inside the housing 10 and constitutes a vapor compression refrigerating cycle.

The refrigeration cycle device 20 has a compressor 21 , a condenser 22 , a decompression section 23 , an evaporator 24 and an accumulator 25 . The refrigeration cycle device 20 circulates the refrigerant by operating the compressor 21 to cool or heat the air blown around the seat, which is the space to be air-conditioned.

Here, the refrigeration cycle device 20 employs an HFC-based refrigerant (specifically, R134a) as a refrigerant, and employs a vapor compression subcritical refrigeration cycle in which the pressure of the refrigerant on the high-pressure side does not exceed the critical pressure of the refrigerant. Configure. Of course, an HFO-based refrigerant (eg, R1234yf), a natural refrigerant (eg, R744), or the like may be employed as the refrigerant. Further, the refrigerant contains refrigerating machine oil for lubricating the compressor 21, and part of the refrigerating machine oil circulates in the cycle together with the refrigerant.

In the refrigeration cycle device 20, the compressor 21 sucks, compresses, and discharges the refrigerant. The compressor 21 is configured as an electric compressor in which a fixed displacement type compression mechanism with a fixed displacement is driven by an electric motor. It is placed on the rear side. As the compression mechanism of the compressor 21, various compression mechanisms such as a scroll compression mechanism and a vane compression mechanism can be employed.

The operation (rotational speed) of the electric motor constituting the compressor 21 is controlled by a control signal output from the control section 60 shown in FIG. The controller 60 controls the rotation speed of the electric motor to change the refrigerant discharge capacity of the compressor 21 .

The inlet side of the condenser 22 is connected to a discharge pipe through which the high-pressure refrigerant compressed by the compressor 21 is discharged. The condenser 22 has a heat exchange section 22A configured in a flat plate shape by stacking a plurality of tubes and fins, and heat exchanges between the air passing through the heat exchange section 22A and the high-pressure refrigerant flowing through each tube. Let

As shown in FIGS. 2 to 4, the condenser 22 is arranged on the right side of the main body case 15 and positioned below the hot air vent 12 . 22 A of heat exchange parts of the condenser 22 are formed larger than the opening area of the ventilation port 12 for warm air. Therefore, the air sucked from the warm air vent 12 passes through the heat exchange section 22A of the condenser 22. As shown in FIG.

That is, the condenser 22 exchanges heat between the high-temperature and high-pressure refrigerant discharged from the compressor 21 and the air sucked from the warm air vent 12, and heats the air into warm air WA. can be done. That is, the condenser 22 operates as a heating heat exchanger and functions as a radiator.

The heat exchange portion 22A of the condenser 22 is formed in a flat plate shape whose longitudinal direction is the direction in which the plurality of tubes and fins are extended. As shown in FIGS. 2 to 6, the condenser 22 is arranged such that the longitudinal direction of the heat exchange portion 22A is along the front-rear direction of the air conditioner 1. As shown in FIGS.

Furthermore, as shown in FIGS. 5 and 6, the condenser 22 is arranged such that the heat exchange section 22A is located above the housing bottom surface 15A by a predetermined distance. The space formed below the condenser 22 is a space through which the warm air WA that has passed through the heat exchange section 22A flows, and functions as part of the warm air side ventilation passage 17 .

A decompression unit 23 is connected to the outlet side of the condenser 22 . The decompression part 23 is configured by a so-called fixed throttle, and decompresses the refrigerant flowing out of the condenser 22 . As shown in FIG. 4 , the decompression unit 23 is arranged on the front side inside the body case 15 .

Although the air conditioner 1 uses a fixed throttle as the decompression unit 23, it is not limited to this mode. As long as the refrigerant flowing out of the condenser 22 can be decompressed, various configurations can be adopted as the decompression unit. For example, a capillary tube may be employed as the decompression section 23 , or an expansion valve capable of controlling the aperture opening degree by a control signal from the control section 60 may be used as the decompression section 23 .

The inlet side of the evaporator 24 is connected to the outlet side of the decompression section 23 . The evaporator 24 has a heat exchange portion 24A configured in a flat plate shape by stacking a plurality of tubes and fins, absorbs heat from the air passing through the heat exchange portion 24A, and heats the low-pressure refrigerant flowing through each tube. to evaporate.

As shown in FIGS. 2 to 4, the evaporator 24 is arranged on the left side of the main body case 15 and positioned below the cool air vent 13 . Therefore, in the air conditioner 1 , the evaporator 24 is arranged inside the housing 10 so as to be spaced apart from the condenser 22 in the left-right direction.

A heat exchange portion 24A of the evaporator 24 is formed to have a larger opening area than the cool air vent 13 . Therefore, the air sucked from the cold air vent 13 passes through the heat exchange section 24A of the evaporator 24. As shown in FIG.

That is, the evaporator 24 can exchange heat between the air sucked from the cold air vent 13 and the low-pressure refrigerant decompressed by the decompression unit 23, and cool the air to form cold air CA. That is, the evaporator 24 operates as a cooling heat exchanger and functions as a heat absorber.

A heat exchange portion 24A of the evaporator 24 is formed in a flat plate shape whose longitudinal direction is the direction in which the plurality of tubes and fins are extended. As shown in FIGS. 2 to 6, the evaporator 24 is arranged such that the longitudinal direction of the heat exchange portion 24A is along the front-rear direction of the air conditioner 1. As shown in FIGS.

As shown in FIGS. 5 and 6, the evaporator 24 is arranged such that the heat exchange section 24A is located above the housing bottom surface 15A by a predetermined distance. The space formed below the evaporator 24 is a space through which the cool air CA that has passed through the heat exchange section 24A flows, and functions as part of the cool air side ventilation passage 18 .

An accumulator 25 is connected to the outlet side of the evaporator 24 and arranged on the rear left side of the main body case 15 . The accumulator 25 separates the gas-liquid refrigerant flowing out of the evaporator 24 and stores surplus liquid-phase refrigerant in the refrigeration cycle.

A suction pipe of the compressor 21 is connected to the gas-phase refrigerant outlet of the accumulator 25 . Accordingly, the gas-phase refrigerant separated by the accumulator 25 is sucked into the compressor 21 through the suction pipe.

As shown in FIG. 2 , a first fan 30 and a second fan 31 are arranged inside the housing 10 . The first blower 30 is a blower configured with an impeller having a plurality of blades and an electric motor for rotating the impeller.

The first blower 30 is located on the rear side between the condenser 22 and the evaporator 24 and below the supply port 14 . Therefore, by rotating the impeller, the first blower 30 can blow air through the supply port 14 to the sheet, which is the space to be air-conditioned.

Similarly to the first blower 30, the second blower 31 is a blower having an impeller and an electric motor. As shown in FIG. 2 , the second blower 31 is arranged adjacent to the front side of the first blower 30 between the condenser 22 and the evaporator 24 .

The second blower 31 is positioned below the exhaust port 16 . Therefore, the second blower 31 can blow air to the outside of the air-conditioned space through the exhaust port 16 by rotating the impeller.

As shown in FIG. 3 and the like, a fan support portion 55 is arranged below the first blower 30 and the second blower 31 . Fan support 55 is positioned between condenser 22 and evaporator 24 and has a first mounting opening 56 and a second mounting opening 57 . As shown in FIGS. 3 to 6, the fan support portion 55 is arranged at a predetermined height from the housing bottom surface 15A of the housing 10, and is between the condenser 22 and the evaporator 24. The space of is divided up and down.

The first attachment opening 56 is an opening to which the first blower 30 is attached, and is arranged on the rear side of the fan support portion 55 . On the other hand, the second mounting opening 57 is an opening to which the second blower 31 is mounted, and is arranged adjacent to the first mounting opening 56 on the front side of the fan support portion 55 .

Therefore, the first blower 30 can suck the air below the fan support portion 55 through the first mounting opening 56 and supply the air to the supply port 14 . The second blower can suck in the air below the fan support portion 55 through the second mounting opening 57 and blow the air to the exhaust port 16 .

Then, the configurations of the warm air switching unit 35 and the cold air switching unit 40 in the air conditioner 1 will be described with reference to the drawings.

5 shows a VV cross section in FIG. 4, showing an example of the flow of air (cold air CA) by the first blower 30. As shown in FIG. 6 shows a section VI-VI in FIG. 4, showing an example of the flow of air (warm air WA) by the second blower 31. As shown in FIG.

As shown in FIG. 3, the air conditioner 1 includes a hot air switching unit 35 and a cold air switching unit 35 between the condenser 22 and the evaporator 24, below the first blower 30 and the second blower 31. 40. The hot air switching unit 35 is a mechanism for switching the destination of the warm air WA heated by the condenser 22 . The cold air switching unit 40 is a mechanism for switching the destination of the cold air CA cooled by the evaporator 24 .

The warm air switching section 35 and the cold air switching section 40 are configured by including a frame member 45 arranged below the fan support section 55, a supply slide door 46, an exhaust slide door 47, a drive motor 50, and the like. ing.

That is, the hot air switching unit 35 and the cold air switching unit 40 are arranged inside the housing 10 between the condenser 22 and the evaporator 24 arranged on both left and right sides. The hot air switching unit 35 is located on the right side between the condenser 22 and the evaporator 24 (that is, the side close to the condenser 22), and the cold air switching unit 40 is located between the condenser 22 and the evaporator. 24 on the left side (that is, the side closer to the evaporator 24).

As shown in FIGS. 5 and 6, the frame member 45 is arranged below the fan support portion 55 between the condenser 22 and the evaporator 24 and extends in the front-rear direction. The frame member 45 is formed in an arc shape that bulges downward with respect to a cross section perpendicular to the front-rear direction.

A partition portion 45A is formed at the lower end portion of the frame member 45 that swells in an arc shape. The partition portion 45A is formed in a wall-like shape that closes the space between the lower end portion of the frame member 45 and the inner surface of the housing bottom surface 15A, and extends along the front-rear direction. That is, the space below the frame member 45 is divided into left and right by the dividing portion 45A.

The space below the frame member 45 and on the right side of the partition portion 45A communicates with the space below the condenser 22 and constitutes part of the warm air side ventilation passage 17 . Similarly, the space below the frame member 45 and on the left side of the partition 45A communicates with the space below the evaporator 24 and constitutes part of the cold wind side ventilation passage 18 .

A dividing rib that divides the space between the fan support portion 55 and the frame member 45 in the front-rear direction is formed in the central portion of the frame member 45 in the front-rear direction. A space on the rear side of the partition rib communicates with the first mounting opening 56 and functions as a supply space 56A into which air supplied from the supply port 14 flows. The space on the front side of the dividing rib communicates with the second mounting opening 57 and functions as an exhaust space 57A into which the air blown from the exhaust port 16 flows.

The hot air supply opening 36 and the hot air exhaust opening 37 that constitute the hot air switching section 35 are arranged adjacent to each other in the front-rear direction on the right side of the partition section 45A of the frame member 45 . The hot air supply opening 36 is formed on the rear right side of the frame member 45 and communicates the supply space 56A with the hot air side ventilation passage 17 . The hot air exhaust opening 37 is formed on the front right side of the frame member 45 and communicates the exhaust space 57A with the warm air side ventilation passage 17 .

As shown in FIGS. 5 and 6, the frame member 45 is formed in an arcuate shape that bulges downward toward the central portion in the left-right direction, and the hot air supply opening 36 and the hot air exhaust opening 37 , are opened in the right portion of the frame member 45 .

Therefore, the opening edge of the hot air supply opening 36 and the hot air exhaust opening 37 is formed to draw a downward arc as it moves away from the right side of the housing 10 where the condenser 22 is arranged. That is, of the opening edges of the hot air supply opening 36 and the hot air exhaust opening 37, the part located on the condenser 22 side is separated from the partition part through the hot air supply opening 36 and the hot air exhaust opening 37. It faces the part located on the 45A side. The portion located on the condenser 22 side is located above the portion located on the partition portion 45A side with respect to the vertical direction of the air conditioner 1 .

As a result, the opening areas of the hot air supply opening 36 and the hot air exhaust opening 37 are such that the hot air supply opening 36 and the like are formed so as to traverse the hot air side ventilation passage 17 in the left-right direction (that is, horizontally). It becomes larger than the opening area in the case of

Further, as shown in FIGS. 4 to 6, the condenser 22 is arranged such that the longitudinal direction of the heat exchange section 22A extends along the front-rear direction. In the hot air switching unit 35, the hot air supply opening 36 and the hot air exhaust opening 37 are arranged side by side in the front-rear direction. In addition, in 1st Embodiment, the front-back direction corresponds to the said predetermined direction.

As a result, with respect to the air that has passed through the heat exchange portion 22A of the condenser 22, the air conditioner 1 has can be sufficiently secured.

The cold air supply opening 41 and the cold air exhaust opening 42 that constitute the cold air switching section 40 are arranged adjacent to each other in the front-rear direction on the left side of the partition section 45A of the frame member 45 .

The cold air supply opening 41 is formed on the rear left side of the frame member 45 and communicates the supply space 56A with the cold air side ventilation passage 18 . As shown in FIG. 5 , the cold air supply opening 41 is laterally adjacent to the hot air supply opening 36 in the frame member 45 .

The cold air exhaust opening 42 is formed on the front left side of the frame member 45 and communicates the air exhaust space 57A with the cold air side ventilation passage 18 . As shown in FIG. 6 , the cold air exhaust opening 42 is laterally adjacent to the warm air exhaust opening 37 in the frame member 45 .

As described above, the frame member 45 is formed in an arc shape that bulges downward toward the center in the left-right direction, and the cold air supply opening 41 and the cold air exhaust opening 42 are located on the left side of the frame member 45. partly open.

Therefore, the opening edges of the cool air supply opening 41 and the cool air exhaust opening 42 are formed to draw a downward arc as they move away from the left side of the housing 10 in which the evaporator 24 is arranged. That is, of the opening edges of the cold air supply opening 41 and the cold air exhaust opening 42, the portion positioned on the evaporator 24 side is positioned on the partition 45A side via the cold air supply opening 41 and the cold air exhaust opening 42. It is facing the part to do. The portion located on the evaporator 24 side is located above the portion located on the partition portion 45A side with respect to the vertical direction of the air conditioner 1 .

As a result, the opening areas of the cold air supply opening 41 and the cold air exhaust opening 42 are the same as the openings in the case where the cold air supply opening 41 and the like are formed so as to cross the cold air side ventilation passage 18 in the left-right direction (that is, horizontally). larger than the area.

As shown in FIGS. 4 to 6, the evaporator 24 is arranged such that the longitudinal direction of the heat exchange section 24A extends along the front-rear direction. In the cold air switching unit 40, the cold air supply opening 41 and the cold air exhaust opening 42 are arranged side by side in the front-rear direction. In addition, in 1st Embodiment, the front-back direction corresponds to the said predetermined direction.

As a result, with respect to the air that has passed through the heat exchange section 24A of the evaporator 24, the air conditioner 1 has a sufficient amount of air flowing into the cold air supply opening 41 and the air flowing into the cold air exhaust opening 42. can be secured.

A supply slide door 46 is movably attached to the rear side of the frame member 45 . The supply slide door 46 is formed in a plate shape having an opening area larger than that of the hot air supply opening 36 and the cold air supply opening 41 , and is curved along the arc of the frame member 45 .

The supply slide door 46 is attached so as to be slidable along the arc of the frame member 45 between a position that closes the hot air supply opening 36 and a position that closes the cold air supply opening 41 . there is

Therefore, by moving the supply slide door 46, the air conditioner 1 can control the amount of warm air WA flowing into the supply space 56A through the warm air supply opening 36 and the amount of warm air WA flowing through the cold air supply opening 41. The air volume of the cool air CA flowing into the supply space 56A can be adjusted. That is, the supply slide door 46 can adjust the ratio of the hot air WA and the cold air CA in the air supplied from the supply port 14, and functions as a supply side air volume adjustment unit.

On the other hand, an exhaust slide door 47 is movably attached to the front side of the frame member 45 . The exhaust slide door 47 is formed in a plate-like shape having an opening area larger than that of the hot air exhaust opening 37 and the cold air exhaust opening 42 , and is curved along the arc of the frame member 45 .

The supply slide door 46 is attached so as to be slidable along the arc of the frame member 45 between a position that closes the hot air exhaust opening 37 and a position that closes the cool air exhaust opening 42 . there is

Therefore, by moving the exhaust sliding door 47, the air conditioner 1 can move the amount of warm air WA flowing into the exhaust space 57A through the warm air exhaust opening 37 and the amount of warm air flowing through the cold air exhaust opening 42. The air volume of the cool air CA flowing into the exhaust space 57A can be adjusted. That is, the exhaust sliding door 47 can adjust the ratio of the hot air WA and the cold air CA in the air blown from the exhaust port 16, and functions as an exhaust side air volume adjustment section.

As shown in FIG. 4 and the like, a drive motor 50 is arranged inside the housing 10 . The drive motor 50 is composed of a so-called servomotor and functions as a drive source for sliding the supply slide door 46 and the exhaust slide door 47 . The operation of the drive motor 50 is performed based on a control signal from the control section 60 .

A supply shaft 48 is connected to the drive shaft of the drive motor 50 . The supply shaft 48 extends forward from the drive motor 50 and has two gear portions 48A. Further, the supply shaft 48 is arranged to cross over the supply slide door 46 in the front-rear direction.

Two tooth portions 46A are arranged on the upper surface of the supply slide door 46 so as to extend in the left-right direction. The tooth portions 46A of the supply slide door 46 are formed so as to mesh with the teeth of the gear portion 48A of the supply shaft 48, respectively.

Therefore, the power generated by the drive motor 50 is transmitted to the supply slide door 46 via the gear portion 48A and the tooth portion 46A. That is, the air conditioner 1 can slide the supply slide door 46 to any position in the left-right direction by controlling the operation of the drive motor 50 with the control unit 60 .

On the other hand, an exhaust shaft 49 is rotatably supported on the front side of the supply shaft 48 . The exhaust shaft 49 extends forward in parallel with the supply shaft 48 and has two gear portions 49A.

As shown in FIG. 4, a transmission gear portion 48B is arranged at the front end of the supply shaft 48, and meshes with a driven gear portion 49B arranged at the rear end of the exhaust shaft 49. is configured as Therefore, the power generated by the drive motor 50 is transmitted to the exhaust shaft 49 as the supply shaft 48 rotates.

Two tooth portions 47A are arranged on the upper surface of the exhaust slide door 47 so as to extend in the left-right direction. The teeth 47A of the exhaust slide door 47 are formed to mesh with the gear 49A of the exhaust shaft 49, respectively.

Accordingly, power generated by the drive motor 50 is transmitted through the supply shaft 48 to rotate the exhaust shaft 49 . As a result, the exhaust slide door 47 slides between the warm air exhaust opening 37 and the cold air exhaust opening 42 . That is, the air conditioner 1 can slide the exhaust slide door 47 to any position in the left-right direction by controlling the operation of the drive motor 50 with the control unit 60 .

Further, according to the air conditioner 1, the power of the drive motor 50 is transmitted to the supply slide door 46 and the exhaust slide door 47 via the supply shaft 48 and the exhaust shaft 49, whereby the supply slide door 46 and the sliding movement of the exhaust sliding door 47 can be interlocked.

As shown in FIGS. 8 to 13, when the exhaust slide door 47 moves so as to increase the opening area of the cool air exhaust opening 42, the supply slide door 46 increases the opening area of the warm air supply opening 36. move to increase.

In this case, when the air volume ratio of the cool air CA in the air flowing into the exhaust space 57A increases, the air volume ratio of the warm air WA in the air flowing into the supply space 56A increases. The air conditioner 1 can supply the mixed air MA having a lower temperature than the heating mode and a higher temperature than the cooling mode to the space to be air-conditioned, and can realize an air mix mode for heating.

Further, when the exhaust slide door 47 moves so as to increase the opening area of the warm air exhaust opening 37, the supply slide door 46 moves so as to increase the opening area of the cool air supply opening 41. FIG.

In this case, when the air volume ratio of the warm air WA in the air flowing into the exhaust space 57A increases, the air volume ratio of the cold air CA in the air flowing into the supply space 56A increases. The air conditioner 1 can supply the mixed air MA having a lower temperature than the heating mode and a higher temperature than the cooling mode to the space to be air-conditioned, and can realize an air mix mode for cooling.

According to the air conditioner 1 according to the first embodiment configured in this way, air conditioning is performed using the warm air WA heated by the condenser 22 of the refrigeration cycle device 20 and the cold air CA cooled by the evaporator 24. The conditioned air can be supplied to the seat, which is the target space.

According to the air conditioner 1, by controlling the operation of the warm air switching unit 35 and the cold air switching unit 40, the cooling mode for supplying the cold air CA to the air-conditioned space and the A heating mode in which hot air WA is supplied and an air mix mode in which mixed air MA whose temperature is adjusted by mixing cold air CA and warm air WA are supplied to the air-conditioned space can be realized.

Next, a control system of the air conditioner 1 according to the first embodiment will be described with reference to the drawings. As shown in FIG. 7 , the air conditioner 1 has a control section 60 for controlling the operation of the components of the air conditioner 1 .

The control unit 60 is composed of a well-known microcomputer including CPU, ROM, RAM, etc. and its peripheral circuits. Then, the control unit 60 performs various arithmetic processing based on the control program stored in the ROM, and controls the operation of each constituent device.

The compressor 21 , the first blower 30 , the second blower 31 , and the drive motor 50 are connected to the output side of the controller 60 . Therefore, the control unit 60 adjusts the refrigerant discharge performance (e.g., refrigerant pressure) of the compressor 21, the air blowing performance (e.g., air blowing volume) of the first blower 30, and the air blowing performance of the second blower 31 according to the situation. can do.

Further, by controlling the operation of the drive motor 50 , the control section 60 can adjust the air volume balance of the cold air CA and the warm air WA in the hot air switching section 35 and the cold air switching section 40 . That is, the controller 60 can change the operation mode of the air conditioner 1 to any one of the cooling mode, heating mode, and air mix mode.

A plurality of types of air conditioning sensors 61 are connected to the input side of the control section 60 . The air-conditioning sensor is composed of a plurality of types of sensors used for controlling the air-conditioning operation of the air conditioner 1 and includes the pressure sensor 62 .

The pressure sensor 62 is a detection unit for detecting the pressure of the refrigerant on the low-pressure side of the cycle, and is arranged, for example, in a refrigerant pipe connected to the evaporator 24 . Therefore, the control unit 60 can determine the magnitude of the load during the air conditioning operation of the air conditioner 1 according to the magnitude of the low-pressure side refrigerant pressure of the cycle detected by the pressure sensor 62. control.

The air conditioning sensor 61 includes a suction temperature sensor for detecting the temperature of the air sucked in through the warm air vent 12 and the cold air vent 13, and the temperature of the air (that is, warm air WA) passing through the condenser 22. and a cold air temperature sensor for detecting the temperature of the air that has passed through the evaporator 24 (that is, cold air CA).

The air conditioning sensor 61 includes, for example, a temperature sensor (evaporator temperature sensor) that detects the refrigerant temperature on the low-pressure side of the cycle, a high-pressure sensor that detects the refrigerant pressure on the high-pressure side of the cycle, and a temperature sensor that detects the temperature of the high-pressure refrigerant. It may also include a sensor. An operation panel for instructing the operation of the air conditioner 1 may be connected to the input side of the control section 60 .

As described above, the air conditioner 1 according to the first embodiment can execute the cooling mode in which the cool air CA is supplied to the seat, which is the space to be air-conditioned. Here, the operation of the air conditioner 1 in the cooling mode will be described with reference to FIGS. 4 to 6. FIG.

In this cooling mode, the control unit 60 closes the warm air supply opening 36 with the supply slide door 46 and closes the cold air exhaust opening 42 with the exhaust slide door 47. and controls the cool air switching unit 40 . That is, as shown in FIGS. 4 to 6, in the hot air switching section 35, the hot air exhaust opening 37 is fully opened, and in the cold air switching section 40, the cold air supply opening 41 is fully open.

As shown in FIG. 5, when the first blower 30 is operated in this state, the first blower 30 sucks air from the supply space 56A and supplies the air to the seat, which is the space to be air-conditioned, through the supply port 14. .

As described above, in the cooling mode, the hot air supply opening 36 is closed and the cool air supply opening 41 is open. Therefore, as shown in FIG. 5 , the first blower 30 draws in air from the cool air vent 13 and passes the air through the heat exchange section 24A of the evaporator 24 .

At this time, the air is heat-absorbed by the low-pressure refrigerant flowing inside the evaporator 24 and becomes cool air CA. The cold air CA that has passed through the evaporator 24 flows through the cold air side air passage 18 and flows into the supply space 56A from the cold air supply opening 41 . Then, the cold air CA is sucked from the supply space 56A by the first blower 30 and supplied from the supply port 14 to the air-conditioned space.

In this cooling mode, since the warm air supply opening 36 is closed by the supply slide door 46, the air on the warm air side ventilation passage 17 side is moved into the supply space 56A by the operation of the first blower 30. not be sucked into That is, in this case, the first blower 30 does not cause an air flow of the hot air vent 12→the condenser 22→the warm air side air passage 17→the hot air supply opening 36. FIG.

Therefore, in the cooling mode of the air conditioner 1 , the cool air CA is generated by cooling the air blown by the first blower 30 through heat exchange with the low-pressure refrigerant in the evaporator 24 . That is, the amount of heat absorbed by the refrigerant in the evaporator 24 of the refrigeration cycle device 20 is greatly affected by the amount of air blown by the first blower 30 . In other words, the air conditioner 1 can adjust the amount of heat absorbed by the refrigerant in the evaporator 24 by adjusting the amount of air blown by the first blower 30 in the cooling mode.

In the cooling mode, when the second blower 31 is operated, the second blower 31 draws in air from the exhaust space 57A below and blows the air through the exhaust port 16 to the outside of the air-conditioned space.

As shown in FIG. 6, in the cooling mode, the hot air exhaust opening 37 is opened and the cool air exhaust opening 42 is closed. Therefore, the second blower 31 sucks air from the warm air vent 12 and passes the air through the heat exchange section 22A of the condenser 22 .

At this time, the air is heated by heat exchange with the high-pressure refrigerant flowing through the condenser 22 and becomes warm air WA. The warm air WA that has passed through the condenser 22 flows through the warm air side ventilation path 17 and flows into the exhaust space 57A from the warm air exhaust opening 37 . Then, the warm air WA is sucked from the exhaust space 57A by the second blower 31 and is blown from the exhaust port 16 to the outside of the air-conditioned space.

In this cooling mode, since the cool air exhaust opening 42 is closed by the exhaust sliding door 47, the air on the cold air side ventilation passage 18 side is sucked into the exhaust space 57A by the operation of the second blower 31. will not be That is, in this case, the second blower 31 does not cause an air flow of cold air vent 13→evaporator 24→cold air side air passage 18→cold air exhaust opening 42. FIG.

Therefore, in the cooling mode of the air conditioner 1 , the warm air WA is generated by heating the air blown by the second blower 31 with the heat of the high-pressure refrigerant in the condenser 22 . That is, the amount of heat released by the refrigerant in the condenser 22 of the refrigeration cycle device 20 is greatly affected by the amount of air blown by the second blower 31 . In other words, the air conditioner 1 can adjust the amount of heat released by the refrigerant in the condenser 22 by adjusting the amount of air blown by the second blower 31 in the cooling mode.

In this way, the air conditioner 1 supplies the cold air CA cooled by the evaporator 24 to the air-conditioned space from the supply port 14 by the first blower 30, and the hot air WA heated by the condenser 22. , the air can be blown from the exhaust port 16 by the second blower 31 . That is, the air conditioner 1 can realize a cooling mode in which the cool air CA is supplied to the seat, which is the space to be air-conditioned.

According to the air conditioner 1, in the cooling mode, the amount of heat absorbed by the refrigerant in the evaporator 24 can be adjusted by adjusting the amount of air blown by the first blower 30, and the amount of air blown by the second blower 31 can be adjusted. By adjusting, the heat release amount of the refrigerant in the condenser 22 can be adjusted.

As a result, the air conditioner 1 can appropriately adjust the amount of heat released by the refrigerant in the condenser 22 and the amount of heat absorbed by the refrigerant in the evaporator 24 in the cooling mode. can be activated by

The first blower 30 in the cooling mode functions as a supply blower for supplying conditioned air to the air-conditioned space, and at the same time functions as a cold air blower for blowing cool air CA. That is, the first blower 30 sucks air through the evaporator 24 as at least one of the condenser 22 and the evaporator 24 .

The second blower 31 in this case functions as an exhaust blower for blowing air to the outside of the air-conditioned space, and at the same time functions as a warm air blower for blowing the warm air WA. That is, the second blower 31 sucks air through the condenser 22 as at least the other of the condenser 22 and the evaporator 24 .

Next, the operation of the air conditioner 1 in the heating mode will be described with reference to FIGS. 8 to 10. FIG. In the heating mode, the control unit 60 closes the cool air supply opening 41 with the supply slide door 46 and closes the warm air exhaust opening 37 with the exhaust slide door 47. It controls the cool air switching unit 40 . That is, as shown in FIGS. 8 to 10, in the hot air switching section 35, the hot air supply opening 36 is fully opened, and in the cold air switching section 40, the cold air exhaust opening 42 is fully open.

As shown in FIG. 9, when the first blower 30 is operated in this state, the first blower 30 sucks air from the supply space 56A and supplies the air to the seat, which is the space to be air-conditioned, through the supply port 14. .

As described above, in the heating mode, the cool air supply opening 41 is closed and the warm air supply opening 36 is open. Therefore, as shown in FIG. 9, the first blower 30 sucks air from the hot air vent 12 and passes the air through the heat exchange section 22A of the condenser 22. As shown in FIG.

At this time, the air is heated by the heat of the high-pressure refrigerant flowing inside the condenser 22 and becomes warm air WA. The hot air WA that has passed through the condenser 22 flows through the hot air side ventilation path 17 and flows into the supply space 56A from the hot air supply opening 36 . Then, the warm air WA is sucked from the supply space 56A by the first blower 30 and supplied from the supply port 14 to the air-conditioned space.

In the heating mode, since the cool air supply opening 41 is closed by the supply slide door 46, the air on the cold air side ventilation passage 18 side is sucked into the supply space 56A by the operation of the first blower 30. never. In other words, in this case, the first blower 30 does not cause an air flow of cold air vent 13→evaporator 24→cold air side air passage 18→cold air supply opening 41. FIG.

Therefore, in the heating mode of the air conditioner 1 , the warm air WA is generated by heating the air blown by the first blower 30 with the heat of the high-pressure refrigerant in the condenser 22 . That is, the amount of heat released by the refrigerant in the condenser 22 of the refrigeration cycle device 20 is greatly affected by the amount of air blown by the first blower 30 . In other words, the air conditioner 1 can adjust the amount of heat released by the refrigerant in the condenser 22 by adjusting the amount of air blown by the first blower 30 in the heating mode.

In addition, when the second blower 31 is operated in the heating mode, the second blower 31 sucks air from the exhaust space 57A and blows the air through the exhaust port 16 to the outside of the air-conditioned space. As shown in FIG. 10, in the heating mode, the cool air exhaust opening 42 is opened and the warm air exhaust opening 37 is closed. Therefore, the second blower 31 sucks air from the cool air vent 13 and passes the air through the heat exchange section 24A of the evaporator 24 .

In this case, the air absorbs heat by the low-pressure refrigerant flowing through the evaporator 24 and becomes cool air CA. The cool air CA that has passed through the evaporator 24 flows through the cold air side air passage 18 and flows into the exhaust space 57A from the cold air exhaust opening 42 . Then, the cold air CA is sucked from the exhaust space 57A by the second blower 31 and sent from the exhaust port 16 to the outside of the air-conditioned space.

In this heating mode, since the hot air exhaust opening 37 is closed by the exhaust slide door 47, the air on the warm air side ventilation path 17 side is discharged into the exhaust space 57A by the operation of the second blower 31. not be sucked into That is, in this case, the second blower 31 does not cause an air flow of the warm air vent 12→the condenser 22→the warm air side air passage 17→the warm air exhaust opening 37. FIG.

Therefore, in the heating mode of the air conditioner 1 , the cool air CA is generated by absorbing heat from the air blown by the second blower 31 with the low-pressure refrigerant in the evaporator 24 . That is, the amount of heat absorbed by the refrigerant in the evaporator 24 of the refrigeration cycle device 20 is greatly affected by the amount of air blown by the second blower 31 . In other words, the air conditioner 1 can adjust the amount of heat absorbed by the refrigerant in the evaporator 24 by adjusting the amount of air blown by the second blower 31 in the heating mode.

As described above, the air conditioner 1 supplies the warm air WA heated by the condenser 22 to the air-conditioned space from the supply port 14 by the first blower 30, and supplies the cold air CA cooled by the evaporator 24. , the air can be blown from the exhaust port 16 by the second blower 31 . That is, the air conditioner 1 can realize a heating mode in which the warm air WA is supplied to the seat, which is the space to be air-conditioned.

According to the air conditioner 1, in the heating mode, the amount of air blown by the first blower 30 can be adjusted to adjust the amount of heat released by the refrigerant in the condenser 22, and the amount of air blown by the second blower 31 can be adjusted. By adjusting, the amount of heat absorbed by the refrigerant in the evaporator 24 can be adjusted.

As a result, the air conditioner 1 can appropriately adjust the amount of heat released by the refrigerant in the condenser 22 and the amount of heat absorbed by the refrigerant in the evaporator 24 in the heating mode, and the refrigeration cycle device 20 can be easily balanced and stabilized. can be activated by

The first blower 30 in the heating mode functions as a supply blower for supplying conditioned air to the air-conditioned space, and at the same time functions as a warm air blower for blowing warm air WA. That is, the first blower 30 sucks air through the condenser 22 as at least one of the condenser 22 and the evaporator 24 .

The second blower 31 in this case functions as an exhaust blower for blowing air to the outside of the air-conditioned space, and at the same time functions as a cold air blower for blowing cold air CA. That is, the second blower 31 sucks air through the evaporator 24 as at least the other of the condenser 22 and the evaporator 24 .

Next, the operation of the air conditioner 1 in the air mix mode will be described with reference to FIGS. 11 to 13. FIG. The air mix mode is an operation mode in which mixed air MA obtained by mixing warm air WA and cold air CA is supplied to the air-conditioned space.

In the air mix mode, the control unit 60 controls the position of the supply slide door 46 to secure the opening area of the hot air supply opening 36 and the cold air supply opening 41 . At the same time, the control unit 60 controls the position of the exhaust slide door 47 to secure the opening area of the hot air exhaust opening 37 and the cold air exhaust opening 42 .

As shown in FIG. 12, when the first blower 30 is operated in this state, the first blower 30 sucks air from the supply space 56A and supplies the air to the seat, which is the space to be air-conditioned, through the supply port 14. .

In the air mix mode, the opening area is ensured for both the hot air supply opening 36 and the cold air supply opening 41 . Therefore, as shown in FIG. 12, the first blower 30 draws in air from the hot air vent 12, passes through the heat exchange section 22A of the condenser 22, and at the same time draws in air from the cool air vent 13. The heat exchange section 24A of the evaporator 24 is passed through.

As described above, the air passing through the condenser 22 is heated by the heat of the high-pressure refrigerant flowing inside the condenser 22 to become warm air WA. The hot air WA that has passed through the condenser 22 flows through the hot air side ventilation path 17 and flows into the supply space 56A from the hot air supply opening 36 .

On the other hand, the air passing through the evaporator 24 is heat-absorbed by the low-pressure refrigerant flowing through the evaporator 24 and becomes cool air CA. The cold air CA flows out from the evaporator 24 to the cold air side ventilation passage 18 and flows into the supply space 56A from the cold air supply opening 41 .

That is, in the air mix mode, the hot air WA and the cold air CA flow into the supply space 56A and are mixed. Then, the air inside the supply space 56A is sucked by the first blower 30 and supplied from the supply port 14 to the air-conditioned space as the mixed air MA.

As described above, the supply slide door 46 has the function of adjusting the opening area of the hot air supply opening 36 and the opening area of the cold air supply opening 41, so that the temperature of the air flowing into the supply space 56A is reduced. The air volume ratio of the air WA and the cold air CA can be adjusted, and the mixed air MA can be supplied from the supply port 14 .

That is, in the air mix mode, the air conditioner 1 adjusts the position of the supply sliding door 46 to appropriately adjust the temperature of the conditioned air (that is, the mixed air MA) supplied to the air-conditioned space. can be done.

Then, when the second blower 31 is operated in the air mix mode, the second blower 31 draws in air from the exhaust space 57A in the same manner as in the above-described cooling mode, etc. air to the outside of the

As shown in FIG. 13, in the air mix mode, the opening area is ensured for both the hot air exhaust opening 37 and the cold air exhaust opening 42 . Therefore, the second blower 31 sucks air from the hot air vent 12 and passes it through the heat exchange section 22A of the condenser 22, and at the same time, sucks air from the cool air vent 13 to the heat exchange section of the evaporator 24. 24A.

Then, the warm air WA that has passed through the condenser 22 flows through the warm air side ventilation passage 17 and flows into the exhaust space 57A from the warm air exhaust opening 37 . Similarly, the cool air CA that has passed through the evaporator 24 flows through the cool air side air passage 18 and flows into the exhaust space 57A from the cool air exhaust opening 42 .

Therefore, in the air mix mode, the hot air WA and the cold air CA flow into the exhaust space 57A and are mixed. Then, the air inside the exhaust space 57A is sucked by the second blower 31 and is blown from the exhaust port 16 to the outside of the air-conditioned space as a mixed air MA.

As described above, the exhaust sliding door 47 has the function of adjusting the opening area of the hot air exhaust opening 37 and the opening area of the cold air exhaust opening 42, so that the temperature of the air flowing into the exhaust space 57A is reduced. The air volume ratio of the air WA and the cold air CA can be adjusted, and the mixed air MA can be blown from the exhaust port 16 .

Here, in the air conditioner 1, the control unit 60 is configured to control the operation of the compressor 21 according to the level of the air conditioning load detected by the pressure sensor 62 of the air conditioning sensor 61 and the like. In a conventional air conditioner, when the air conditioning load is low, the electric motor that constitutes the compressor 21 is controlled so that the operation and stop of the operation are repeated periodically.

In the refrigerating cycle device 20, the refrigerant circulates due to the operation of the compressor 21, and the refrigerant contains refrigerating machine oil. For this reason, when the compressor 21 is controlled to periodically operate and stop at a low load, it is assumed that the refrigerating machine oil returning to the compressor 21 will be insufficient as the refrigerant circulates. be.

In this respect, the air conditioner 1 performs the air mix mode as shown in FIGS. 11 to 13 when the air conditioning load is low. By operating the air conditioner 1 in the air mix mode, the minimum rotation speed of the electric motor of the compressor 21 can be maintained at a predetermined reference or higher.

That is, when the air-conditioning load is low, the air-conditioning apparatus 1 can maintain the circulation amount of the refrigerant in the refrigeration cycle device 20 at a predetermined standard or higher by switching to the air-mix mode. Even in the case of , the return amount of refrigerating machine oil to the compressor 21 (that is, oil return) can be ensured.

Further, in this case, the air conditioner 1 air-conditions the air-conditioned space while maintaining the minimum rotation speed of the electric motor above a predetermined standard by setting the air mix mode. That is, the air conditioner 1 does not periodically repeat the activation and deactivation of the electric motor of the compressor 21 and can reduce the vibration caused by the ON-OFF control of the compressor 21 .

As described above, the air conditioner 1 according to the first embodiment includes the vapor compression refrigeration cycle device 20, the first blower 30, the second blower 31, The wind switching unit 35 and the cool wind switching unit 40 are housed inside the housing 10 .

As shown in FIGS. 4 to 6, the air conditioner 1 sends the hot air WA heated by the condenser 22 to the outside of the air-conditioned space by the warm air switching unit 35, and cool air switching unit 40 Thus, cold air CA cooled by the evaporator 24 can be supplied to the air-conditioned space. That is, the air conditioner 1 can realize a cooling mode for cooling the space to be air-conditioned with a configuration in which the components such as the refrigeration cycle device 20 are compactly housed inside the housing 10 .

8 to 10, the air conditioner 1 supplies the hot air WA heated by the condenser 22 to the air-conditioned space by the hot air switching unit 35, and also switches the cold air switching unit 40. Accordingly, the cold air cooled by the evaporator 24 can be blown to the outside of the air-conditioned space. That is, the air conditioner 1 can realize a heating mode for heating the air-conditioned space with a configuration in which the components of the refrigeration cycle device 20 are compactly housed inside the housing 10 .

Further, according to the air conditioner 1, the blowing capacity of the first blower 30 and the second blower 31 can be individually adjusted, so that the amount of heat released by the refrigerant in the condenser 22 of the refrigeration cycle device 20 and The amount of heat absorbed by the refrigerant can be adjusted appropriately. As a result, the air conditioner 1 can easily balance the refrigeration cycle device 20 and operate stably.

As shown in FIGS. 4 to 13, inside the housing 10 of the air conditioner 1, the first blower 30 and the second blower 31 are heat exchangers (that is, condensers 22 or evaporators) with respect to the flow of blown air. 24). Therefore, according to the air conditioner 1, it is possible to increase the degree of freedom in designing the arrangement of the first blower 30 and the second blower 31 inside the housing 10, and increase the size of the air conditioner 1 (that is, the housing 10) can be suppressed.

In the air conditioner 1 according to the first embodiment, as shown in FIGS. 6, 9, etc., the warm air switching unit 35 is located downstream of the condenser 22 with respect to the flow of the warm air WA. It is arranged upstream of the blower 30 and the second blower 31 . Further, as shown in FIGS. 5 and 10 , the cold air switching unit 40 is arranged downstream of the evaporator 24 and upstream of the first blower 30 and the second blower 31 with respect to the flow of the cold air CA. ing.

As a result, the air conditioner 1 includes components such as the condenser 22 , the evaporator 24 , the first fan 30 , the second fan 31 , the hot air switching unit 35 , and the cold air switching unit 40 inside the housing 10 . It can be stored compactly.

Further, as shown in FIGS. 2 to 6 and the like, in the air conditioner 1, the condenser 22 and the evaporator 24 are arranged in the housing 10 with a space therebetween in the horizontal direction. The hot air switching unit 35 is arranged on the right side of the condenser 22 between the condenser 22 and the evaporator 24, and the cold air switching unit 40 is arranged between the condenser 22 and the evaporator 24. , on the left side of the evaporator 24 side.

As a result, according to the air conditioner 1, switching of the flow of the warm air WA by the switching unit for hot air 35 and switching of the flow of cold air CA by the switching unit for cold air 40 can be reliably realized, and each component can be switched. It can be compactly accommodated inside the housing 10 .

As shown in FIGS. 4 to 6, etc., the condenser 22 is arranged such that the longitudinal direction of the heat exchange portion 22A thereof is the front-rear direction. The hot air switching unit 35 has a hot air supply opening 36 and a hot air exhaust opening 37, and the hot air supply opening 36 and the hot air exhaust opening 37 are for ventilation on the warm air side. They are arranged side by side in the front-rear direction on the road 17 .

As a result, according to the air conditioner 1, with respect to the flow of the hot air WA that has passed through the heat exchange portion 22A of the condenser 22, the ventilation resistance when passing through the hot air supply opening 36 and the hot air exhaust opening 37 is reduced. While decreasing, the air volume of the warm air WA that can pass through each can be ensured.

The evaporator 24 is arranged such that the longitudinal direction of the heat exchange portion 24A is the front-rear direction. The cold air switching unit 40 has a cold air supply opening 41 and a cold air exhaust opening 42 , and the cold air supply opening 41 and the cold air exhaust opening 42 extend in the front-rear direction in the cold air side ventilation passage 18 . are placed side by side.

As a result, according to the air conditioner 1, with respect to the flow of the cold air CA that has passed through the heat exchange portion 24A of the evaporator 24, the ventilation resistance when passing through the cold air supply opening 41 and the cold air exhaust opening 42 is reduced. , can ensure the air volume of the cold air CA that can pass through each of them.

The air conditioner 1 according to the first embodiment also has a supply slide door 46 and an exhaust slide door 47 which are slidably mounted by the power of the drive motor 50 . The supply sliding door 46 adjusts the air volume ratio of the hot air WA and the cold air CA with respect to the air supplied from the supply port 14 to the air-conditioned space. Then, the exhaust sliding door 47 adjusts the air volume ratio of the warm air WA and the cold air CA with respect to the air blown from the exhaust port 16 to the outside of the air-conditioned space.

Then, as shown in FIGS. 11 to 13, the air conditioner 1 moves the supply slide door 46 to a position where the opening area of the hot air supply opening 36 and the opening area of the cold air supply opening 41 are secured. Thus, the mixed air MA obtained by mixing the warm air WA and the cold air CA can be supplied from the supply port 14 to the air-conditioned space.

In addition, the air conditioner 1 moves the exhaust sliding door 47 to a position where the opening area of the hot air exhaust opening 37 and the opening area of the cold air exhaust opening 42 are secured, thereby making the air-conditioned space outside the air-conditioned space Then, the mixed air MA can be blown from the exhaust port 16 .

When the air conditioning load is low, the air-conditioning apparatus 1 is set to the air-mix mode in which the mixed air MA is supplied, so that the minimum rotation speed of the compressor 21 can be maintained at a predetermined reference or higher.

As a result, in the refrigeration cycle device 20 of the air conditioner 1, even when the air conditioning load is low, the refrigerant of a predetermined standard or higher circulates, so oil return to the compressor 21 can be ensured.

Further, according to the air conditioner 1, when the air conditioning load is low, the compressor 21 is set to the air mix mode as shown in FIGS. operation can be continued. That is, since the air conditioner 1 does not periodically repeat the activation and deactivation of the compressor 21, it is possible to suppress the occurrence of vibration caused by this.

In the air conditioner 1 , the supply slide door 46 and the exhaust slide door 47 are configured to move by transmitting the power of the drive motor 50 through the supply shaft 48 and the exhaust shaft 49 . That is, the movement of the exhaust slide door 47 is interlocked with the movement of the supply slide door 46 through the exhaust shaft 49 .

Therefore, when the exhaust slide door 47 moves so as to increase the opening area of the cold air exhaust opening 42, the supply slide door 46 is interlocked with this to increase the opening area of the warm air supply opening 36. move to increase

As a result, according to the air conditioner 1, in the air mix mode, the mixed air supplied from the supply port 14 is interlocked with increasing the air volume ratio of the cold air CA in the mixed air MA blown from the exhaust port 16. The air volume ratio of the warm air WA in MA can be increased.

Further, when the exhaust slide door 47 moves to increase the opening area of the hot air exhaust opening 37, the supply slide door 46 interlocks with this to increase the opening area of the cold air supply opening 41. Move to increase.

As a result, according to the air conditioner 1, in the air mix mode, the mixture supplied from the supply port 14 is interlocked with increasing the air volume ratio of the warm air WA in the mixed air MA blown from the exhaust port 16. The air volume ratio of the cool air CA in the air MA can be increased.

(Second embodiment)
Next, a second embodiment different from the above-described first embodiment will be described with reference to the drawings. As in the first embodiment, the air conditioner 1 according to the second embodiment includes components such as a refrigeration cycle device 20, a first fan 30, a second fan 31, a warm air switching unit 35, and a cold air switching unit 40. are arranged inside the housing 10 .

In the air conditioner 1 according to the second embodiment, unlike the first embodiment, the arrangement of the condenser 22 and the evaporator 24, the first fan 30, the second fan 31, the warm air switching unit 35, the cold air The positional relationship of the switching unit 40 is different.

Since other points in the second embodiment are the same as those in the first embodiment, repetitive description will be omitted, and differences from the first embodiment will be described in detail. In the following description, the same reference numerals as in the first embodiment indicate the same configurations, and the preceding description is referred to.

As shown in FIG. 14, the air conditioner 1 according to the second embodiment has a vapor compression refrigeration cycle device 20 inside the housing 10, as in the first embodiment. The refrigeration cycle device 20 has a compressor 21 , a condenser 22 , a decompression section 23 , an evaporator 24 and an accumulator 25 .

As shown in FIGS. 14 to 16, in the condenser 22 according to the second embodiment, a heat exchange section 22A configured in a flat plate shape is inclined with respect to the bottom surface 15A of the housing below the hot air vent 12. are arranged to

Specifically, the heat exchange portion 22A of the condenser 22 is inclined so as to be positioned upward toward the center in the left-right direction. The condenser 22 is arranged such that the longitudinal direction of the heat exchange section 22A is the front-rear direction. The space extending below the inclined heat exchange portion 22A constitutes a warm air side ventilation passage 17 through which the warm air WA heated by the condenser 22 flows.

Further, the evaporator 24 according to the second embodiment is arranged such that the heat exchange portion 24</b>A configured in a flat plate shape is inclined with respect to the main body case 15 below the cool air vent 13 . The heat exchange portion 24A of the evaporator 24 is inclined so as to be positioned upward toward the center in the left-right direction. It is arranged so as to be symmetrical with the portion 22A.

The evaporator 24 is arranged such that the longitudinal direction of the heat exchange section 24A is the front-rear direction. The space extending below the inclined heat exchange portion 24A constitutes a cold air side ventilation passage 18 through which the cold air CA cooled by the evaporator 24 flows. The cold-air-side ventilation passage 18 is configured to be symmetrical with the warm-air-side ventilation passage 17 via the partition portion 45A.

In the air conditioner 1 according to the second embodiment, the first blower 30 is configured by a so-called cross-flow fan, and is arranged inside the warm air side ventilation passage 17 . The first blower 30 has a cylindrical impeller extending in the front-rear direction on the right side of the partition 45A, and blows air by rotating the impeller with an electric motor.

Similarly to the first blower 30, the second blower 31 according to the second embodiment is composed of a cross-flow fan, and is arranged inside the cold air-side ventilation passage 18. As shown in FIG. The second blower 31 has a cylindrical impeller extending in the front-rear direction on the left side of the partition 45A, and blows air by rotating the impeller with an electric motor.

As shown in FIGS. 14 to 16, the frame member 45 according to the second embodiment is arranged inside the housing 10 between the condenser 22 and the evaporator 24 which are spaced apart in the left-right direction. , forming a hot air switching section 35 and a cold air switching section 40 .

Unlike the first embodiment, the frame member 45 is arranged above the first blower 30 and the second blower 31, and is formed in an arc shape that bulges upward with respect to a cross section perpendicular to the front-rear direction. there is

A hot air supply opening 36 and a hot air exhaust opening 37 are opened in the right side portion of the frame member 45 so as to be aligned in the front-rear direction. The hot air supply opening 36 and the hot air exhaust opening 37 are located above the first blower 30 and constitute the warm air switching section 35 .

As shown in FIGS. 15 and 16, the frame member 45 is formed in an arcuate shape that bulges upward toward the central portion in the left-right direction. Therefore, the opening edge of the hot air supply opening 36 and the hot air exhaust opening 37 is formed to draw an upward circular arc as it moves away from the right side of the housing 10 where the condenser 22 is arranged.

That is, in the second embodiment, of the opening edges of the hot air supply opening 36 and the hot air exhaust opening 37, the portions located on the condenser 22 side are the hot air supply opening 36 and the hot air exhaust opening 37. It faces the part located on the partition part 45A side via. The portion located on the condenser 22 side is located below the portion located on the partition portion 45A side with respect to the vertical direction of the air conditioner 1 .

As a result, in the second embodiment as well, the opening areas of the hot air supply opening 36 and the hot air exhaust opening 37 are such that the hot air supply opening 36 crosses the hot air side ventilation passage 17 in the left-right direction (i.e., horizontally). It becomes larger than the opening area when the opening 36 etc. are formed.

On the other hand, the cold air supply opening 41 and the cold air exhaust opening 42 are opened in the left side portion of the frame member 45 so as to be adjacent to each other in the front-rear direction. The cold air supply opening 41 and the cold air exhaust opening 42 are located above the second blower 31 and constitute the cold air switching section 40 .

Since the frame member 45 according to the second embodiment is formed in an upwardly bulging arc shape, the opening edges of the cool air supply opening 41 and the cool air exhaust opening 42 are located at the edges of the housing where the evaporator 24 is arranged. It is formed to draw an upward circular arc as it moves away from the left side of 10 .

Therefore, in the second embodiment, of the opening edges of the cold air supply opening 41 and the cold air exhaust opening 42, the portion located on the evaporator 24 side is It faces the part located on the partition part 45A side. The portion located on the evaporator 24 side is located above the portion located on the partition portion 45A side with respect to the vertical direction of the air conditioner 1 .

As a result, in the second embodiment as well, the opening areas of the cold air supply opening 41 and the cold air exhaust opening 42 are set so that the cold air supply opening 41 and the like cross the cold air side ventilation passage 18 in the left-right direction (that is, horizontally). It becomes larger than the opening area when forming .

Also in the second embodiment, the supply slide door 46 and the exhaust slide door 47 are slidably attached to the frame member 45 . As in the first embodiment, the drive motor 50 operates to slide the supply slide door 46 laterally between the hot air supply opening 36 and the cold air supply opening 41 .

Further, the exhaust slide door 47 slides in the left-right direction between the warm air exhaust opening 37 and the cold air exhaust opening 42 by the operation of the drive motor 50 . Since these points have already been described in the first embodiment, description thereof will be omitted.

Next, the operation of the air conditioner 1 according to the second embodiment in the cooling mode will be described with reference to FIGS. 14 to 16. FIG.

In the cooling mode according to the second embodiment, the control unit 60 closes the warm air supply opening 36 with the supply slide door 46 and closes the cool air exhaust opening 42 with the exhaust slide door 47, thereby closing the warm air. It controls the wind switching unit 35 and the cold wind switching unit 40 . That is, as shown in FIGS. 15 and 16, in the hot air switching section 35, the hot air exhaust opening 37 is fully opened, and in the cold air switching section 40, the cold air supply opening 41 is fully open.

When the first blower 30 is operated in this state, the first blower 30 sucks air from the hot air vent 12 via the condenser 22 and blows the air upward of the housing 10 . In the warm air switching section 35 in the cooling mode, the warm air supply opening 36 is closed and the warm air exhaust opening 37 is opened.

Therefore, as shown in FIGS. 15 and 16, the warm air WA heated by the condenser 22 is discharged from the air outlet 16 through the warm air exhaust opening 37 by the operation of the first air blower 30. Air is blown to the outside of the space.

That is, in the cooling mode in the second embodiment, the flow of the warm air WA is as follows: warm air vent 12→condenser 22→first blower 30→hot air exhaust opening 37 (warm air switching unit 35)→exhaust It becomes the order of mouth 16. Therefore, the air conditioner 1 according to the second embodiment can adjust the amount of heat released by the refrigerant in the condenser 22 by adjusting the amount of air blown by the first blower 30 in the cooling mode.

On the other hand, when the second blower 31 is operated in this cooling mode, the second blower 31 sucks air from the cool air vent 13 via the evaporator 24 and blows the air upward of the housing 10 . As described above, in the cold air switching section 40 in the cooling mode, the cold air supply opening 41 is opened and the cold air exhaust opening 42 is closed. As a result, the cold air CA cooled by the evaporator 24 is supplied from the supply port 14 to the air-conditioned space through the cold air supply opening 41 by the operation of the second blower 31 .

That is, in the cooling mode according to the second embodiment, the flow of cold air CA is as follows: cold air vent 13 → evaporator 24 → second blower 31 → cold air supply opening 41 (cold air switching unit 40 ) → supply port 14 . in order. Therefore, the air conditioner 1 according to the second embodiment can adjust the amount of heat absorbed by the refrigerant in the evaporator 24 by adjusting the amount of air blown by the second blower 31 in the cooling mode.

The air conditioner 1 according to the second embodiment supplies cold air CA cooled by the evaporator 24 to the air-conditioned space from the supply port 14 by the second blower 31, and warm air WA heated by the condenser 22. can be blown from the exhaust port 16 by the first blower 30 . That is, the air conditioner 1 can realize a cooling mode in which cool air CA is supplied to the space to be air-conditioned.

According to the air conditioner 1 according to the second embodiment, in the cooling mode, the amount of heat released by the refrigerant in the condenser 22 can be adjusted by adjusting the amount of air blown by the first blower 30. By adjusting the air flow rate of 31, the heat absorption amount of the refrigerant in the evaporator 24 can be adjusted.

As a result, the air conditioner 1 according to the second embodiment can appropriately adjust the amount of heat released by the refrigerant in the condenser 22 and the amount of heat absorbed by the refrigerant in the evaporator 24 in the cooling mode. It is easy to balance and can operate stably.

In the second embodiment, the first air blower 30 in the cooling mode functions as a warm air blower for blowing the warm air WA and at the same time functions as an exhaust air blower for blowing air to the outside of the air-conditioned space. ing. Further, the second blower 31 in this case functions as a cold air blower for blowing the cold air CA and at the same time as a supply blower for supplying the conditioned air to the space to be air conditioned.

Next, the operation of the air conditioner 1 according to the second embodiment in the heating mode will be described with reference to FIGS. 17 and 18. FIG.

In the heating mode according to the second embodiment, the control unit 60 closes the warm air exhaust opening 37 with the supply slide door 46 and closes the cool air supply opening 41 with the exhaust slide door 47, thereby increasing the temperature. It controls the wind switching unit 35 and the cold wind switching unit 40 . That is, as shown in FIGS. 17 and 18, the hot air supply opening 36 of the hot air switching section 35 is fully opened, and the cold air exhaust opening 42 of the cold air switching section 40 is fully open.

When the first blower 30 is operated in this state, the first blower 30 sucks air from the hot air vent 12 via the condenser 22 and blows the air upward of the housing 10 . Therefore, as shown in FIGS. 17 and 18, the hot air WA heated by the condenser 22 is supplied from the supply port 14 through the hot air supply opening 36 by the operation of the first blower 30. supplied to the space.

That is, in the heating mode in the second embodiment, the flow of the warm air WA is as follows: warm air vent 12→condenser 22→first blower 30→hot air supply opening 36 (warm air switching unit 35)→supply It becomes the order of mouth 14. Therefore, the air conditioner 1 according to the second embodiment can adjust the amount of heat released by the refrigerant in the condenser 22 by adjusting the amount of air blown by the first blower 30 in the heating mode.

On the other hand, when the second blower 31 is operated in this heating mode, the second blower 31 sucks air from the cool air vent 13 via the evaporator 24 and blows the air upward of the housing 10 . As a result, as shown in FIG. 18, the cool air CA cooled by the evaporator 24 is blown outside the air-conditioned space from the air outlet 16 through the cold air exhaust opening 42 by the operation of the second blower 31. be.

That is, in the heating mode according to the second embodiment, the flow of cold air CA is as follows: cold air vent 13 → evaporator 24 → second blower 31 → cold air exhaust opening 42 (cold air switching unit 40 ) → exhaust port 16 . in order. As a result, the air conditioner 1 according to the second embodiment can adjust the amount of heat absorbed by the refrigerant in the evaporator 24 by adjusting the amount of air blown by the second blower 31 in the heating mode.

The air conditioner 1 according to the second embodiment blows cold air CA cooled by the evaporator 24 from the exhaust port 16 by the second blower 31, and blows warm air WA heated by the condenser 22 to the first The air can be supplied from the supply port 14 to the air-conditioned space by the blower 30 . That is, the air conditioner 1 can realize a heating mode in which the warm air WA is supplied to the air-conditioned space.

According to the air conditioner 1 according to the second embodiment, even in the heating mode, the amount of air blown by the first blower 30 can be adjusted to adjust the amount of heat released by the refrigerant in the condenser 22. By adjusting the air flow rate of 31, the heat absorption amount of the refrigerant in the evaporator 24 can be adjusted.

As a result, the air conditioner 1 according to the second embodiment can appropriately adjust the amount of heat released by the refrigerant in the condenser 22 and the amount of heat absorbed by the refrigerant in the evaporator 24 in the heating mode. It is easy to balance and can operate stably.

In the second embodiment, the first blower 30 in the heating mode functions as a warm air blower for blowing the warm air WA and at the same time functions as a supply blower for supplying conditioned air to the air-conditioned space. is doing. Further, the second blower 31 in this case functions as a cool air blower for blowing the cold air CA and at the same time functions as an exhaust blower for blowing air to the outside of the air-conditioned space.

In the air conditioner 1 according to the second embodiment, the supply slide door 46 and the exhaust slide door 47 have the same configuration as in the first embodiment, and are slid in the left-right direction by the power of the drive motor 50. placed as possible.

Therefore, the air-conditioning apparatus 1 according to the second embodiment can also realize the air-mix mode in the same manner as in the first embodiment, ensuring oil return when the air-conditioning load is low, and turning the compressor 21 ON-. Vibration due to OFF operation can be suppressed.

As described above, according to the air conditioner 1 according to the second embodiment, it is possible to obtain the effects obtained from the configuration and operation common to those of the above-described first embodiment in the same manner as in the first embodiment. .

In the air conditioner 1 according to the second embodiment, as shown in FIGS. 16 and 17, the warm air switching unit 35 is configured to operate the condenser 22, the first blower 30, and the second blower with respect to the flow of the warm air WA. 31 on the downstream side. Further, as shown in FIGS. 15 and 18, the cold air switching unit 40 is arranged downstream of the other of the evaporator 24, the first fan 30 and the second fan 31 with respect to the flow of the cold air CA. there is

That is, the air conditioner 1 according to the second embodiment includes the fans (that is, the first fan 30 and the second fan 31) and the warm air on the downstream side of the heat exchangers (that is, the condenser 22 and the evaporator 24). Even if the positional relationship between the cold air switching unit 35 and the cool air switching unit 40 is different from that in the first embodiment, the components can be compactly housed inside the housing 10 .

(Other embodiments)
Although the present invention has been described above based on the embodiments, the present invention is not limited to the above-described embodiments. That is, various modifications and improvements are possible without departing from the gist of the present invention. For example, the embodiments described above may be combined as appropriate. Also, the above-described embodiment can be variously modified, for example, as follows.

(1) In the above-described embodiment, the air conditioner 1 is applied to a seat air conditioner in which the space to be air-conditioned is the seat, but it is not limited to this aspect. If the refrigerating cycle device 20, the first fan 30, the second fan 31, the warm air switching unit 35, and the cold air switching unit 40 are housed inside the housing 10 as components of the air conditioner 1 described above, It can also be configured for other uses.

(2) In the above-described embodiment, the housing 10 of the air conditioner 1 is configured in a rectangular parallelepiped shape that can be arranged between the seating surface of the seat and the floor surface of the passenger compartment. not something. The external shape and the like of the housing 10 can be appropriately changed depending on the situation.

(3) In the above-described embodiment, the blowing capacity of the first blower 30 and the second blower 31 was adjusted by changing the rotation speed of each electric motor according to the control signal from the control unit 60. It is not limited to the mode. By adopting fans having different performances as the first fan 30 and the second fan 31, it is possible to adjust the blowing capacity.

(4) In the above-described embodiment, the refrigeration cycle device 20 has the accumulator 25, but it is not limited to this aspect. The refrigerating cycle device 20 may constitute a refrigerating cycle having at least a compressor 21 , a condenser 22 , a pressure reducing section 23 and an evaporator 24 .

1 air conditioner 10 housing 20 refrigerating cycle device 22 condenser 24 evaporator 30 first blower 31 second blower 35 hot air switching section 40 cold air switching section

Claims (7)

a housing (10);
A compressor (21) for compressing and discharging a refrigerant, a condenser (22) for heating air by radiating heat from the high-pressure refrigerant discharged from the compressor, and a decompression unit for decompressing the refrigerant discharged from the condenser. (23), and an evaporator (24) that evaporates the low-pressure refrigerant decompressed by the decompression unit to cool the air, and is housed inside the housing (20);
a first blower (30) for blowing air sucked through at least one of the condenser and the evaporator inside the housing;
a second blower (31) for blowing air sucked through at least one of the condenser and the evaporator inside the housing;
a warm air side ventilation passage (17) through which warm air (WA) made of air heated when passing through the condenser circulates inside the housing;
a cold-air-side ventilation passage (18) in the interior of the housing, which is partitioned from the warm-air-side ventilation passage and through which cold air (CA) composed of air cooled when passing through the evaporator flows;
a warm air switching unit (35) for switching between a ventilation passage for guiding the warm air (WA) to the air-conditioned space and a ventilation passage for guiding the warm air to the outside of the air-conditioned space; ,
With respect to the flow of the cold air, a cold air switching unit (40) for switching between a ventilation passage for guiding the cold air to the air-conditioned space and a ventilation passage for guiding the cold air to the outside of the air-conditioned space,
The hot air switching unit is arranged downstream of any one of the condenser, the first fan, and the second fan with respect to the flow of the hot air in the hot air side ventilation passage ,
The cold air switching unit is an air conditioner arranged downstream of the other of the evaporator, the first fan, and the second fan with respect to the flow of the cold air in the cold air side ventilation passage . The condenser and the evaporator are spaced apart inside the housing,
The hot air switching unit is arranged on the condenser side between the condenser and the evaporator,
2. The air conditioner according to claim 1 , wherein the cold air switching section is arranged between the condenser and the evaporator and adjacent to the hot air switching section on the evaporator side. The heat exchange section (22A) of the condenser is arranged such that its longitudinal direction is in a predetermined direction,
The hot air switching unit is
a warm air supply opening (36) arranged in a ventilation passage for guiding the warm air to the air-conditioned space;
a hot air exhaust opening (37) arranged in a ventilation passage for guiding the hot air to the outside of the air-conditioned space;
The air conditioner according to claim 1 or 2 , wherein the hot air supply opening and the hot air exhaust opening are arranged side by side in the predetermined direction. The heat exchange part (24A) of the evaporator is arranged so that its longitudinal direction is in a predetermined direction,
The cold air switching unit is
a cold air supply opening (41) arranged in a ventilation passage for guiding the cold air to the air-conditioned space;
A cold air exhaust opening (42) arranged in a ventilation passage for guiding the cold air to the outside of the air-conditioned space.
and
The air conditioner according to any one of claims 1 to 3 , wherein the cool air supply opening and the cool air exhaust opening are arranged side by side in the predetermined direction. a supply-side air volume adjustment unit (46) that adjusts an air volume ratio of the warm air and the cold air supplied to the air-conditioned space;
an exhaust side air volume adjustment unit (47) for adjusting the air volume ratio of the warm air and the cold air blown to the outside of the air-conditioned space;
The supply-side air volume adjustment unit is configured to mix the warm air and the cold air and supply the mixed air to the air-conditioned space,
5. The air conditioner according to any one of claims 1 to 4 , wherein the exhaust-side air volume adjustment unit is configured to mix the warm air and the cold air and blow the mixed air to the outside of the air-conditioned space. 6. The supply-side air volume adjustment unit increases the air volume ratio of the warm air in the air supplied to the air-conditioned space as the air volume ratio of the cold air in the exhaust - side air volume adjustment unit increases. air conditioner. 7. The supply-side air volume adjustment unit increases the air volume ratio of the cold air in the air supplied to the air-conditioned space as the air volume ratio of the hot air in the exhaust-side air volume adjustment unit increases. The air conditioner described in .

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