JP2010070082A - Air conditioning device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To restrain increase in costs, and change of a blowing temperature in a concentrated air-conditioning mode. <P>SOLUTION: A portion of an air passage on a downstream side of a cooling heat exchanger 12 is partitioned into a passage 37 for a driver's seat, a passage 38 for a front passenger's seat and a passage 39 for a rear seat by partition walls 35, 36. and communication ports 35a, 36a communicating the passage for the driver's seat, the passage for the front passenger's seat and the passage for the rear seat are formed at a portion of the partition wall on an airflow downstream side of a heating heat exchanger 13. Plate doors 33, 34 for opening/closing the communication ports by a pressure difference between the passage for the driver's seat, the passage for the front passenger's seat and the passage for the rear seat are arranged on a case 11. A control means 50 has correction means for correcting at least one target blowing temperature out of a driver's seat side target blowing temperature, a front passenger's seat side target blowing temperature and a rear seat side target blowing temperature in a front seat concentrated air-conditioning mode and a one-seat concentrated air-conditioning mode. The correction means corrects at least one target blowing temperature so as to restrain the change of the blowing temperatures when the plate doors open the communication ports. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle air conditioner having a centralized air conditioning mode for concentrating and air-conditioning a specific area in a vehicle interior.

Conventionally, this kind of vehicle air conditioner is described in Patent Document 1. In this prior art, when it is necessary to increase the heating capacity of the front seat (driver's seat and front passenger seat) side in the passenger compartment, the air passage toward the rear seat side opening is blocked by the door. . Thereby, the air-conditioning wind blown out to the rear seat side at the normal time is blown out to the front seat side, and the heating capacity of the front seat side can be enhanced.
JP 2000-62442 A

  By the way, this inventor examined the vehicle air conditioner (henceforth the examination example 1) shown to Fig.9 (a) in order to improve the air-conditioning capability by the side of a driver's seat, when a passenger | crew is only a driver | operator. In this examination example 1, it is possible to perform a one-seat concentrated air-conditioning mode in which air-conditioned air is blown only to the driver's seat side.

  Specifically, in the case 11 of the indoor unit 10, a partition wall 35 that partitions the air passage on the downstream side of the evaporator 12 into three air passages including a driver seat passage 37, a passenger seat passage 38, and a rear seat passage 39, 36, and air mix doors 19a, 19b, 19c are arranged in each of these three air passages 37-39, and the blowout openings 29a, 29b, 30a, 30b of these three air passages 37-39 are blown out openings. Partial doors 40, 41, 42, 43 are arranged.

  Then, by closing the passenger seat opening door 41 and the rear seat opening doors 42, 43, the entire amount of cold air that has passed through the evaporator 12 flows into the driver seat passage 37 as indicated by arrows Y1, Y2. The conditioned air is blown out from the driver seat opening 29a only to the driver seat side.

  However, in this examination example 1, at the time of one-seat concentrated air conditioning, the cold air after passing through the evaporator 12 flows through only a part of the heater core 13 as indicated by the arrow Y3, so that the heating ability by the heater core 13 cannot be used effectively. .

  Therefore, the present inventor has studied a vehicle air conditioner (hereinafter referred to as Study Example 2) shown in FIG. In this examination example 2, plate doors 91 and 92 that are driven to open and close by the actuator 90 are arranged in the part of the partition walls 35 and 36 on the downstream side of the air flow from the heater core 13. Thereby, at the time of one-seat concentrated air conditioning, the cold air after passing through the evaporator 12 flows through the entire heater core 13 as indicated by arrows Z1 to Z3, so that the heating capacity of the heater core 13 can be effectively used.

  However, in this examination example 2, since the plate doors 91 and 92 are driven by the actuator 90, there is a problem that the cost is increased. Further, in this examination example 2, the inflow of the conditioned air from the passenger seat passage 38 and the rear seat passage 39 to the driver seat passage 37 is performed on the downstream side of the heater core 13, so the passenger seat passage 38 and the rear seat In the air passage 39, the conditioned air having different temperatures independently adjusted by the air mix doors 19b and 19c flows into the driver's seat passage 37, and the temperature of the air blown from the driver's seat opening 29a changes. There is a problem of end.

  Further, in Study Example 2, these problems similarly occur when the front-seat concentrated air-conditioning mode in which the conditioned air is blown to the driver seat side and the passenger seat side is performed.

  In view of the above points, an object of the present invention is to suppress an increase in cost and to suppress a change in blowing temperature in a centralized air conditioning mode.

In order to achieve the above object, in the first aspect of the present invention, an air passage through which air flows toward the passenger compartment and an opening (29, 30) through which the air flowing through the air passage flows are formed. )When,
A cooling heat exchanger (12) for cooling the air flowing through the air passage;
A heating heat exchanger (13) disposed in the air passage for heating the air that has passed through the cooling heat exchanger (12);
An air mix door (19) that is arranged in the air passage and adjusts the air volume ratio between the warm air passing through the heating heat exchanger (13) and the cold air flowing bypassing the heating heat exchanger (13);
A control means (50) for calculating a target blowing temperature from the openings (29, 30) and controlling the air mix door (19) based on the target blowing temperature;
The case (11) partitions a portion of the air passage downstream from the cooling heat exchanger (12) into a driver seat passage (37), a passenger seat passage (38), and a rear seat passage (39). Having partition walls (35, 36),
The air mix door (19) includes a driver seat air mix door (19a) that adjusts the air volume ratio of warm air and cold air in the driver seat passage (37), and hot air and cold air in the passenger seat passage (38). An air mix door (19b) for the passenger seat that adjusts the air volume ratio of the rear seat, and an air mix door (19c) for the rear seat that adjusts the air volume ratio of the warm air and the cold air in the rear seat passage (39),
The openings (29, 30) are a driver seat opening (29a) through which the air flowing through the driver seat passage (37) flows out, and a passenger seat opening through which the air flowing through the passenger seat passage (38) flows out. The rear seat opening (30a, 30b) through which the air flowing through the portion (29b) and the rear seat passage (39) flows out,
The target blowing temperature includes a driver seat side target blowing temperature that is a target blowing temperature from the driver seat opening (29a), a passenger seat side target blowing temperature that is a target blowing temperature from the passenger seat opening (29b), and It is a rear seat side target blowing temperature that is a target blowing temperature from the rear seat openings (30a, 30b),
The case (11) includes an opening door (40, 41, 42, 43) for opening and closing the driver seat opening (29a), the passenger seat opening (29b), and the rear seat opening (30a, 30b). Is placed,
Of the partition walls (35, 36), the driver seat passage (37), the passenger seat passage (38), and the rear seat passage (39) are located downstream of the heating heat exchanger (13). ) To communicate with each other (35a, 36a),
The case (11) includes a plate door (33, 34) that opens and closes the communication port (35a, 36a) due to a pressure difference between the driver seat passage (37), the passenger seat passage (38), and the rear seat passage (39). ) Is placed,
The opening doors (40 to 43) close the rear seat openings (30a, 30b) and open the driver seat opening (29a) and the passenger seat opening (29b) to open the driver seat opening (29a). ) And the passenger seat opening (29b), and the air conditioning mode for blowing air out is the front seat centralized air conditioning mode,
The opening doors (40 to 43) close the passenger seat opening (29b) and the rear seat opening (30a, 30b) and open the driver seat opening (29a), thereby opening the driver seat opening (29a). ) When the air-conditioning mode that blows out air from the 1-seat centralized air-conditioning mode,
The control means (50) sets at least one target outlet temperature among the driver seat side target outlet temperature, the passenger seat side target outlet temperature and the rear seat side target outlet temperature in the front seat central air conditioning mode and the one seat central air conditioning mode. Correction means (S120, S130, S210) for correcting,
The correcting means (S120, S130, S210) correct the at least one target blowing temperature so as to suppress a change in the blowing temperature caused by the plate doors (33, 34) opening the communication ports (35a, 36a). It is characterized by that.

  According to this, the plate door (35a, 36a) that opens and closes the communication port (35a, 36a) that connects the driver seat passage (37), the passenger seat passage (38), and the rear seat passage (39) ( 33, 34) is opened and closed by the pressure difference between the driver's seat passage (37), the passenger seat passage (38) and the rear seat passage (39), so that an actuator for driving the plate doors (33, 34) is unnecessary. Thus, an increase in cost can be suppressed.

  Further, in the front seat central air conditioning mode and the one seat central air conditioning mode, the correction means (S120, S130, S210) includes at least one of the driver seat side target blowing temperature, the passenger seat side target blowing temperature, and the rear seat side target blowing temperature. Since one target blowing temperature is corrected and the change in the blowing temperature caused by the plate doors (33, 34) opening the communication ports (35a, 36a) is suppressed, the front-seat concentrated air conditioning mode and the one-seat concentrated air conditioning mode The change of the blowing temperature in can be suppressed.

According to a second aspect of the present invention, in the vehicle air conditioner according to the first aspect, the correction means (S130) is in the front seat centralized air conditioning mode.
Correct the target air temperature on the rear seat side to an intermediate value between the target air temperature on the driver's seat side and the target air temperature on the passenger seat side,
Of the driver's side target outlet temperature and the passenger's side target outlet temperature, the higher target outlet temperature is corrected to a predetermined amount higher value,
Of the driver seat side target blowing temperature and the passenger seat side target blowing temperature, the lower target blowing temperature is corrected to a value lower by a predetermined amount.

  According to a third aspect of the present invention, in the vehicular air conditioner according to the first aspect, the correcting means (S210) is configured such that when the one-seat concentrated air-conditioning mode is selected, the passenger seat side target blowing temperature and the rear seat side target blowing temperature. Is corrected to the same value as the driver's seat side target blowing temperature.

According to a fourth aspect of the present invention, in the vehicle air conditioner according to any one of the first to third aspects, the plate doors (33, 34) include a driver seat passage (37), a passenger seat passage ( 38) and the rear-seat passage (39) are configured to open the communication ports (35a, 36a) when the pressure difference exceeds a predetermined pressure difference,
The predetermined pressure difference is such that the opening door (40-43) is at least one of the driver seat opening (29a), the passenger seat opening (29b) and the rear seat opening (30a, 30b). Is a pressure difference that occurs when at least one opening is opened.

  Accordingly, the plate doors (33, 34) can be reliably opened and closed by the pressure difference between the driver seat passage (37), the passenger seat passage (38), and the rear seat passage (39).

According to a fifth aspect of the present invention, in the vehicle air conditioner according to any one of the first to fourth aspects, the driver seat passage (37) is a driver seat foot passage,
Passenger seat passage (38) is a passenger foot passage,
The driver's seat opening (29a) is a driver's seat foot opening,
The passenger seat opening (29b) is a passenger seat foot opening,
The case (11) includes a face-side partition wall that partitions a portion of the air passage downstream of the cooling heat exchanger (12) into a driver seat face passage (45) and a passenger seat face passage (46). 44)
The case (11) includes a driver seat face opening (25a) through which air flowing through the driver seat face passage (45) flows out, and a passenger seat face through which air flowing through the passenger seat face passage (46) flows out. An opening (25b) is formed,
In the case (11), a face door (26) for opening and closing the driver's seat face opening (25a) and the passenger seat face opening (25b) is disposed,
The face side partition wall (44) is formed with a face side communication port (44a) for communicating the driver seat face passage (45) and the passenger seat face passage (46),
The case (11) is provided with a face side plate door (47) that opens and closes the face side communication port (44a) by a pressure difference between the driver face face passage (45) and the passenger seat face passage (46). It is characterized by.

According to a sixth aspect of the present invention, in the vehicle air conditioner according to the fifth aspect, the case (11) includes a driver seat face that partitions the driver seat face passage (45) and the driver seat foot passage (37). A foot partition wall (17a), and a passenger seat face foot partition wall (17b) that partitions the passenger seat face passage (46) and the passenger seat foot passage (38);
The driver's seat face foot partition wall (17a) is formed with a driver's seat face foot communication port (31a) for communicating the driver's seat face passage (45) and the driver's seat foot passage (37).
The passenger seat face foot partition wall (17b) is formed with a passenger seat face foot communication port (31b) communicating the passenger seat face passage (46) and the passenger seat foot passage (38),
The case (11) includes a driver seat face foot communication door (32a) that opens and closes the driver seat face foot communication port (31a) due to a pressure difference between the driver seat face passage (45) and the driver seat foot passage (37). And a passenger seat face foot communication door (32b) that opens and closes the passenger seat face foot communication port (31b) due to a pressure difference between the passenger seat face passage (46) and the passenger seat foot passage (38). It is characterized by being.

  According to this, in the face blowing mode and the foot blowing mode, the cooling capacity of the cooling heat exchanger (12) and the heating capacity of the heating heat exchanger (13) are made effective by the face foot communication door (32a, 32b). Can be used.

  In addition, an increase in cost can be suppressed as compared with the case where the face foot communication doors (32a, 32b) are driven by an actuator.

In the invention according to claim 7, an air passage through which air flows toward the vehicle interior, and a case (11) that forms an opening (25) through which the air that flows through the air passage flows out,
A cooling heat exchanger (12) for cooling the air flowing through the air passage;
A heating heat exchanger (13) disposed in the air passage for heating the air that has passed through the cooling heat exchanger (12);
An air mix door (18) that is arranged in the air passage and adjusts the air volume ratio between the hot air passing through the heating heat exchanger (13) and the cold air flowing bypassing the heating heat exchanger (13);
A control means (50) for calculating a target outlet temperature from the opening (25) and controlling the air mix door (18) based on the target outlet temperature;
The case (11) has a partition wall (44) that partitions a portion of the air passage downstream of the cooling heat exchanger (12) into a driver seat passage (45) and a passenger seat passage (46). ,
The air mix door (18) includes a driver seat air mix door (18a) that adjusts the air volume ratio between warm air and cold air in the driver seat passage (45), and hot air and cold air in the passenger seat passage (46). An air mix door (18b) for the passenger seat that adjusts the air volume ratio with
The opening (25) includes a driver seat opening (25a) through which air flowing through the driver seat passage (45) flows out, and a passenger seat opening through which air flowing through the passenger seat passage (46) flows out. (25b)
The target blowing temperature is a driver seat side target blowing temperature which is a target blowing temperature from the driver seat opening (25a), and a passenger seat side target blowing temperature which is a target blowing temperature from the passenger seat opening (25b). Yes,
The case (11) is provided with an opening door (26) for opening and closing the driver seat opening (25a) and the passenger seat opening (25b),
In the partition wall (44), a communication port (44a) for communicating the driver's seat passage (45) and the passenger's seat passage (46) is provided on the downstream side of the heating heat exchanger (13). Formed,
The case (11) is provided with a plate door (47) that opens and closes the communication port (44a) due to a pressure difference between the driver seat passage (45) and the passenger seat passage (46).
The opening door (26) opens the driver seat opening (25a) and the passenger seat opening (25b), and air-conditioning air is blown out from the driver seat opening (25a) and the passenger seat opening (25b). The mode is the front seat central air conditioning mode,
One-seat concentrated air-conditioning mode is an air conditioning mode in which the opening door (26) closes the passenger seat opening (25b) and opens the driver seat opening (25a) to blow out air from the driver seat opening (25a). When
The control means (50) has correction means for correcting at least one target blowing temperature among the driver seat side target blowing temperature and the passenger seat side blowing target temperature in the front seat concentrated air conditioning mode and the single seat concentrated air conditioning mode. ,
The correcting means corrects at least one target blowing temperature so as to suppress a change in the blowing temperature associated with the plate door (33, 34) opening the communication port (44a).

  Thus, the same effect as that attained by the 1st aspect can be attained.

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

  FIG. 1 is a cross-sectional view showing an air conditioning unit 10 of a vehicle air conditioner according to an embodiment of the present invention. In FIG. 1, the up and down arrows indicate the up and down and front and rear directions in the vehicle mounted state.

  The ventilation system of the vehicle air conditioner is roughly divided into two parts: a blower unit (not shown) and the air conditioning unit 10. The blower unit is arranged offset from the center part to the passenger seat side in the lower part of the instrument panel in the passenger compartment. On the other hand, the air conditioning unit 10 is arranged in the vehicle left and right direction in the lower part of the instrument panel in the passenger compartment. It is arranged at a substantially central part.

  Although not shown, the blower unit includes an inside / outside air switching box and a blower that sucks air and blows air through the inside / outside air switching box. The inside / outside air switching box is formed with an outside air introduction port for introducing outside air (vehicle compartment outside air) and an inside air introduction port for introducing inside air (vehicle compartment air). Both inlets are opened and closed by an inside / outside air switching door. The blower is composed of a centrifugal fan, a drive motor, and a scroll case.

  The air conditioning unit 10 incorporates an evaporator (cooling heat exchanger) 12 and a heater core (heating heat exchanger) 13 in one common air conditioning case 11. The air conditioning case 11 is made of a resin molded product having a certain degree of elasticity and excellent strength, such as polypropylene.

  The air-conditioning case 11 is specifically composed of a plurality of divided cases. The plurality of divided cases accommodate the devices such as the heat exchangers 12 and 13 and a door described later, and then a fastening means such as a metal spring clip or a screw. Thus, the air conditioning unit 10 is configured as a single unit.

  An air inlet (not shown) is formed on the side surface of the portion of the air conditioning case 11 closest to the front side of the vehicle. Air blown from the scroll case of the blower unit flows into the air inlet.

  In the air conditioning case 11, an evaporator 12 is disposed immediately after the air inlet. The evaporator 12 is arranged in the vertical direction so as to cross the passage in the air conditioning case 11 in a thin shape in the vehicle front-rear direction. Therefore, as shown by the arrow F1, the blown air from the air inlet flows into the front surface of the evaporator 12 extending in the vehicle vertical direction. The evaporator 12 is a cooling heat exchanger that cools the conditioned air by absorbing the latent heat of evaporation of the refrigerant in the refrigeration cycle from the conditioned air.

  A heater core 13 is arranged at a predetermined interval on the downstream side of the air flow of the evaporator 12 (the vehicle rear side). The heater core 13 is disposed slightly inclined with respect to the vehicle vertical direction on the lower side in the air conditioning case 11. Although not shown, the width dimension of the evaporator 12 and the heater core 13 in the left-right direction of the vehicle is designed to be substantially the same as the width dimension of the air conditioning case 11.

  The heater core 13 is a heat exchanger for heating that reheats the cold air that has passed through the evaporator 12, and hot water (engine cooling water) flows through the heater core 13 and heats the air using this hot water as a heat source. .

  In the air passage in the air conditioning case 11, first and second cold air bypass passages 14, 15 through which air (cool air) flows by bypassing the heater core 13, as indicated by arrows F 2, F 3, in the upper part and the lower part of the heater core 13. Is formed.

  The heater core 13 has a heat exchanging core portion composed of a flat tube through which hot water passes and a corrugated fin joined thereto, and the air flow path of the heat exchanging core portion is the front surface of the heat exchanging core portion. The upper side flow path 13a and the lower side flow path 13b are partitioned by the front side partition wall 17 positioned on the side and the rear side partition wall 17 positioned on the rear side of the heat exchange core portion. Here, both the partition walls 16 and 17 are formed so as to extend over the entire area in the vehicle width direction (perpendicular to the plane of FIG. 1) inside the air conditioning case 11, and can be integrally formed with the air conditioning case 11.

  First and second air mix doors 18 and 19 that constitute a temperature adjusting means are disposed between the heater core 13 and the evaporator 12. The first air mix door 18 includes hot air heated in the upper flow path 13a of the heater core 13 as indicated by an arrow F4, and cold air that bypasses the heater core 13 through the first cold air bypass passage 14 as indicated by an arrow F2. Adjust the air volume ratio. The hot air F4 from the upper flow path 13a of the heater core 13 and the cold air F2 from the first cold air bypass passage 14 are mixed in the first air mixing unit 20 to become air of a desired temperature.

  The second air mix door 19 includes hot air heated in the lower flow path 13b of the heater core 13 as indicated by an arrow F5, and cold air that bypasses the heater core 13 through the second cold air bypass passage 15 as indicated by an arrow F3. Adjust the air volume ratio. The hot air F5 from the lower flow path 13b of the heater core 13 and the cold air F3 from the second cold air bypass passage 15 are mixed in the second air mixing unit 21 to become air having a desired temperature.

  The first and second air mix doors 18 and 19 are constituted by slide doors that slide and move substantially parallel to the front surface of the evaporator 12. The first and second air mix doors 18 and 19 are connected to an actuator mechanism (not shown), and the slide positions of the first and second air mix doors 18 and 19 are adjusted by this actuator mechanism.

  In the air conditioning case 11, a wall 22 extending upward from the rear partition wall 17 at a predetermined interval from the heater core 13 is formed in the air conditioning case 11 at a portion on the air downstream side (vehicle rear side) of the heater core 13. It is integrally molded.

  The wall portion 22 forms a first hot air passage 23 that extends upward immediately after the heater core 13. The downstream side (upper side) of the first hot air passage 23 merges with the downstream side of the first cold air bypass passage 14 in the upper portion of the heater core 13 to form a first air mixing unit 20 that mixes cold air and hot air. is doing.

  A defroster opening 24 is opened at a portion adjacent to the first air mixing unit 20 on the upper surface of the air conditioning case 11. The defroster opening 24 is supplied with temperature-controlled air from the first air mixing unit 20 and is connected to a defroster outlet through a defroster duct (not shown). Blows wind toward the inner surface of the glass.

  On the upper surface of the air conditioning case 11, a front seat face opening 25 is opened at a position on the vehicle rear side (close to the occupant) of the defroster opening 24. This front seat face opening 25 is where the temperature-controlled conditioned air flows from the first air mixing unit 20 and is connected to a face outlet located above the instrument panel via a face duct (not shown). The air is blown out from the face outlet toward the passenger head in the front seat of the passenger compartment.

  The defroster opening 24 and the front seat face opening 25 are switched open and closed by a face door (opening door) 26. The face door 26 is configured by a slide door that slides in a substantially horizontal direction in the vicinity of the upper surface of the air conditioning case 11.

  The face door 26 is connected to an actuator mechanism (not shown), and the slide position of the face door 26 is adjusted by this actuator mechanism.

  On the lower side of the rear partition wall 17, a second hot air passage 27 is formed from immediately after the heater core 13 toward the rear of the vehicle. The downstream side of the second hot air passage 27 (the vehicle rear side) merges with the downstream side of the second cold air bypass passage 15 in the vehicle rear portion of the heater core 13 to mix the cold air and the hot air. Is forming.

  In the second hot air passage 27, an electric heater 28 serving as an auxiliary heating heat exchanger is disposed. The electric heater 28 is composed of a PTC heater that generates heat by energizing the PTC element.

  In the vehicle rear portion of the air conditioning case 11, a front seat foot opening 29 is opened at a portion adjacent to the second air mixing portion 21. The front seat foot opening 29 is where the temperature-controlled conditioned air flows from the second air mixing unit 21 and opens to the left and right side surfaces of the air conditioning case 11. Air is blown out to the passenger's feet in the front seat via the seat foot outlet.

  In the vehicle rear portion of the air conditioning case 11, a rear seat opening 30 is opened at a position below the front seat foot opening 29. The rear seat opening 30 is where the temperature-controlled conditioned air flows from the second air mixing section 21, and from here through a connection duct (not shown), a rear seat face outlet (not shown) or a rear seat (not shown). The air is blown out from the foot outlet to the head or foot side of the rear seat occupant.

  The rear side partition wall 17 extends to the vehicle rear side wall surface of the air conditioning case 11 and also plays a role of partitioning the first and second air mixing portions 20 and 21. A face foot communication port 31 for communicating the first and second air mixing units 20 and 21 is formed in the rear side partition wall 17.

  A face foot communication door 32 that opens and closes the face foot communication port 31 is disposed at the vehicle rear portion of the air conditioning case 11. The face foot communication door 32 is rotated by a rotation shaft arranged in the left-right direction of the vehicle. The face foot communication door 32 is connected to an actuator mechanism (not shown) and is rotated by the actuator mechanism. .

  The second air mixing unit 21 is provided with first and second air conditioning mode doors 33 and 34. Here, for easy understanding, FIG. 2 shows a schematic cross-sectional view of the air conditioning unit 10, FIG. 3 shows a cross-sectional view along AA in FIG. 2, and FIG. 4 shows a cross-sectional view along BB in FIG. A cross-sectional view is shown. 2 and 3 show a state in a one-seat concentrated air conditioning mode to be described later.

  2, the air passage formed below the both partition walls 16 and 17 is an air passage from the evaporator 12 toward the front seat foot opening 29 and the rear seat opening 30, and FIGS. As shown in FIG. 4, a driver's seat foot passage (driver's seat passage) 37, a passenger's seat foot passage (passenger seat passage) 38, and the rear in the vehicle lateral direction by the driver's seat side partition wall 35 and the passenger seat side partition wall 36. The seat passage 39 is partitioned into three air passages. In this example, a rear seat passage 39 is disposed between the driver foot passage 37 and the passenger foot passage 38.

  The second air mix door 19 described above includes a driver foot air mix door (driver seat air mix door) 19 a disposed in the driver seat foot passage 37, and a passenger seat foot disposed in the passenger seat foot passage 38. The rear air mixing door 19c is disposed in the rear seat passage 39 and the rear air passage door 19c.

  These three air mix doors 19a, 19b, and 19c are respectively connected to an actuator mechanism (not shown), and the slide positions of the three air mix doors 19a, 19b, and 19c are independently adjusted by this actuator mechanism. Yes.

  The second air mixing unit 21 described above includes a driver foot mixing unit 21a formed in the driver seat foot passage 37, a passenger seat foot mixing unit 21b formed in the passenger seat foot passage 38, and a rear seat. The rear seat mixing portion 21 c is formed in the passage 39.

  The driver's seat foot opening 29a (opening for driver's seat) 29a that opens to the side of the air-conditioning case 11 on the driver's seat side and blows air to the passenger's feet on the driver's seat side of the front seat foot opening 29 is provided in the driver's seat. It is formed at the downstream end of the foot passage 37. The front seat foot opening 29 has a front passenger seat foot opening (passenger seat opening) 29b that opens to the side surface on the passenger seat side of the air conditioning case 11 and blows air toward the passenger feet on the front passenger seat side. It is formed at the downstream end of the passage 38. The rear seat opening 30 is configured by a rear seat face opening 30 a and a rear seat foot opening 30 b formed at the downstream end of the rear seat passage 39.

  The driver seat foot opening 29 a is opened and closed by a flat driver seat foot door (opening door) 40. The passenger seat foot opening 29 b is opened and closed by a flat passenger seat foot door (opening door) 41. The rear seat face opening 30 a is opened and closed by a flat rear seat face door (opening door) 42, and the rear seat foot opening 30 b is opened and closed by a flat rear seat foot door (opening door) 43.

  The four doors 40 to 43 are rotated by a rotation shaft arranged in the vertical direction. The four doors 40 to 43 are connected to an actuator mechanism (not shown) and are rotated by the actuator mechanism.

  The driver seat foot passage 37 and the rear seat passage 39 communicate with each other through a driver seat side communication port (communication port) 35 a formed in the driver seat side partition wall 35. Similarly, the passenger seat foot passage 38 and the rear seat passage 39 communicate with each other through a passenger seat side communication port (communication port) 36 a formed in the passenger seat side partition wall 36.

  The first and second air conditioning mode doors 33 and 34 are plate doors that open and close both the communication ports 35a and 36a by the pressure difference between the driver seat foot passage 37, the passenger seat foot passage 38, and the rear seat passage 39.

  Specifically, the first air-conditioning mode door 33 opens and closes the driver-seat-side communication port 35a by the pressure difference between the driver-seat foot passage 37 and the rear-seat passage 39, and the second air-conditioning mode door 34 is the passenger-seat foot passage. The passenger seat side communication port 36 a is opened and closed by a pressure difference between the rear seat passage 38 and the rear seat passage 39.

  The first air conditioning mode door 33 and the driver's seat side communication port 35a are arranged on the downstream side (rear side of the vehicle) by a predetermined dimension from the second air conditioning mode door 34 and the passenger seat side communication port 36a.

  The configuration and size of the first and second air conditioning mode doors 33 and 34 are the same. Therefore, the configuration of the first air conditioning mode door 33 will be described below with reference to FIG. FIG. 5A shows a state in which the first air conditioning mode door 33 closes the driver's seat side communication port 35a, and FIG. 5B shows the first and second air conditioning mode doors 33, 34 in the driver's seat side communication port 35a. Is shown in the open state.

  The 1st air-conditioning mode door 33 is a cantilever door which has arrange | positioned the rotating shaft 33b in the one end part of the flat door main body 33a. Although not shown, both ends of the rotating shaft 33b are rotatably supported by the air conditioning case 11.

  One end of a coil spring 33c is connected to the rotating shaft 33b, and a stopper 33d is connected to the other end of the coil spring 33c. The stopper 33d is disposed in a valley-shaped portion 35b formed at the edge of the driver seat side communication port 35a of the driver seat side partition wall 35. In a state where the first air conditioning mode door 33 is assembled to the air conditioning case 11, the coil spring 33c is contracted from its natural length.

  When the pressure difference between the driver foot passage 37 and the rear seat passage 39 is very small, the stopper 33d is pressed against the innermost portion of the valley 35b by the spring force of the coil spring 33c. ), The first air conditioning mode door 33 is maintained in a state in which the driver's seat side communication port 35a is closed.

  When the pressure difference between the driver's seat foot passage 37 and the rear seat passage 39 is equal to or greater than a predetermined pressure difference, the stopper 33d comes out of the innermost portion of the valley portion 35b against the spring force of the coil spring 33c. As shown in FIG. 5B, the first air conditioning mode door 33 rotates to a position where the driver seat side communication port 35a is opened.

  A lip-shaped seal portion 33e is formed on the peripheral portion of the door main body 33a of the first air conditioning mode door 33, and the first air conditioning mode door 33 closes the driver seat side communication port 35a by the seal portion 33e. Sealing performance is ensured.

  The door main body 33a and the rotating shaft 33b of the first air conditioning mode door 33 can be formed of a resin such as polypropylene. The seal portion 33e of the first air-conditioning mode door 33 can be molded by a thermoplastic elastomer, and can be molded in two colors integrally with the resin rotary shaft 33b and the door body 33a.

  In FIG. 2, the air passage formed above the partition walls 16 and 17 is an air passage from the evaporator 12 toward the defroster opening 24 and the front seat face opening 25. As shown in FIG. A face side partition wall (partition wall) 44 partitions the driver seat face passage (driver seat passage) 45 on the right side of the vehicle and a passenger seat face passage (passenger seat passage) 46 on the left side of the vehicle. Yes.

  The first air mix door 18 described above includes a driver seat face air mix door (driver mix air mix door) 18 a disposed in the driver seat face passage 45 and a passenger seat disposed in the passenger seat face passage 46. And a face air mix door (passenger seat air mix door) 18b (see FIGS. 1 and 2).

  The driver seat face air mix door 18a and the passenger seat face air mix door 18b are respectively connected to an actuator mechanism (not shown) so that the slide positions of the two air mix doors can be independently adjusted by the actuator mechanism. It has become.

  The first air mixing unit 20 includes a driver seat face mixing unit 20a formed in the driver seat face passage 45 and a passenger seat face mixing unit 20b formed in the passenger seat face passage 46. (See FIGS. 1 and 2).

  The front seat face opening 25 described above is formed on the downstream side of the driver seat face opening (driver seat opening) 25 a formed on the downstream side of the driver seat face passage 45 and on the downstream side of the passenger seat face passage 46. And a passenger seat face opening (passenger seat opening) 25b (see FIG. 1).

  The aforementioned defroster opening 24 is also composed of a driver seat defroster opening 24 a formed on the downstream side of the driver seat face passage 45 and a passenger seat defroster opening 24 b formed on the downstream side of the passenger seat face passage 46. It is configured (see FIG. 1).

  The face door 26 includes a driver's seat face door 26a that opens and closes the driver's seat face opening 25a and the driver's seat defroster opening 24a, and a passenger's seat face door that opens and closes the passenger's seat face opening 25b and the passenger's seat defroster opening 24b. 26b (see FIG. 1).

  The driver's seat face door 26a and the passenger seat face door 26b are respectively connected to an actuator mechanism (not shown), and the slide positions of the two face doors 26a and 26b are independently adjusted by this actuator mechanism.

  The face foot communication port 31 described above is a driver seat face foot communication port 31a formed in the driver seat face foot partition wall 17a that partitions the driver seat face passage 45 and the driver seat foot passage 37 in the rear side partition wall 17. And a passenger seat face foot communication port 31b formed in the passenger seat face foot partition wall 17b that partitions the passenger seat face passage 46 and the passenger seat foot passage 38 in the rear side partition wall 17 ( (See FIGS. 1 and 4).

  The face foot communication door 32 described above includes a driver seat face foot communication door 32a that opens and closes the driver's seat face foot communication port 31a, and a passenger seat face foot communication door 32b that opens and closes the passenger seat face foot communication port 31b. It is configured (see FIG. 1).

  As shown in FIG. 4, the driver seat face passage 45 and the passenger seat face passage 46 communicate with each other through a face side communication port 44 a formed in the face side partition wall 44, and the face side communication port 44 a 3 Air-conditioning mode door (face side plate door) 47 opens and closes.

  The third air conditioning mode door 47 is a plate door that opens and closes due to a pressure difference between the driver seat face passage 45 and the passenger seat face passage 46, and the specific configuration thereof is the same as the first air conditioning mode door 33 described above.

  Next, an outline of the electric control unit of the vehicle air conditioner of the present embodiment will be described with reference to FIG. The vehicle air conditioner is automatically controlled by an air conditioning electronic control unit (ECU) 50. The ECU (control means) 50 is composed of a microcomputer or the like, and controls various air conditioners installed in the blower unit (not shown) and the air conditioning unit 10 in accordance with a preset program. . The ECU 50 is supplied with power from an in-vehicle battery (not shown) when an ignition switch (not shown) of an engine mounted on the vehicle is turned on.

  The ECU 50 includes a sensor signal from the sensor group, a front seat side operation panel (not shown) for air conditioning installed in the instrument panel in front of the passenger compartment, and a rear seat for air conditioning installed in the rear seat side of the passenger compartment. An operation signal is input from a side operation panel (not shown).

  The sensor group includes an outside air temperature sensor (not shown) for detecting the outside temperature (outside air temperature) Tam, an inside air temperature sensor (not shown) for detecting the inside temperature (inside air temperature) Tr, and solar radiation into the inside of the vehicle interior. A solar radiation sensor (not shown) for detecting the amount Ts, a post-evaporator temperature sensor 51 for detecting the blown air temperature TE of the evaporator 12, a water temperature sensor (not shown) for detecting the hot water temperature Tw to the heater core 13, etc. Is provided.

  Although not shown, the front seat side operation panel includes a driver seat side temperature setting switch for setting the driver seat side set temperature Tset1, a passenger seat side temperature setting switch for setting the passenger seat side set temperature Tset2, and a blowing mode. A setting switch, an inside / outside air mode setting switch, an air conditioning mode setting switch, and the like are provided, and a rear seat side temperature setting switch for setting the rear seat side set temperature Tset3 is provided on the rear seat side operation panel.

  Next, as driving means for various air conditioners controlled by the ECU 50, a driving motor (not shown) for the above-described inside / outside air switching door (not shown) and a driving motor (not shown) for the blower fan (not shown). And various types of first and second air mix doors 18 and 19, face door 26, face foot communication door 32, driver seat foot door 40, passenger seat foot door 41, rear seat face door 42, and rear seat foot door 43. A drive motor (not shown) for the actuator mechanism for the door is provided.

  Next, the operation of the vehicle air conditioner of the present embodiment in the above configuration will be described. The vehicle air conditioner includes a face door 26, a driver's seat foot door 40, a passenger's seat foot door 41, and a rear seat face door that form a blowing mode switching door. By selecting the operation positions of 42 and the rear seat foot door 43, the following blowing modes can be set.

(1) Face blowing mode When the face blowing mode is selected based on a signal from a blowing mode setting switch (not shown) or a blowing mode calculation result in the ECU 50, the blowing mode switching door is operated, The seat face opening 25 and the rear seat face opening 30a are opened, and the defroster opening 24, the front seat foot opening 29 and the rear seat foot opening 30b are closed.

  Thereby, the conditioned air (mainly cold air) of the first air mixing unit 20 blows out from the front seat face outlet toward the front seat occupant's head toward the front seat face opening 25, and the second air mixing unit 21 conditioned air (mainly cold air) blows out toward the rear seat face opening 30a from the rear seat face outlet to the rear seat occupant's head.

(2) Bi-level blowing mode By operating the blowing mode switching door, the front seat face opening 25, the rear seat face opening 30a, the front seat foot opening 29 and the rear seat foot opening 30b are opened, and the defroster opening 24 is opened. Close.

  Thereby, the conditioned air of the first air mixing unit 20 is simultaneously blown up and down from the front seat face opening 25 and the front seat foot opening 29 on the front seat side of the vehicle interior, and the conditioned air of the second air mixing unit 21 is rear seat. Wind is blown simultaneously from the face opening 30a and the rear seat foot opening 30b up and down on the rear seat side of the vehicle interior.

(3) Foot blowing mode By operating the blowing mode switching door, the front seat foot opening 29 and the rear seat foot opening 30b are opened, and the front seat face opening 25 and the rear seat face opening 30a are closed. Further, the defroster opening 24 is slightly opened.

  Thereby, the conditioned air (mainly warm air) of the first air mixing unit 20 blows out from the front seat foot outlet toward the front seat foot opening 29 toward the feet of the front seat occupant, and the second air mixing The conditioned air (mainly hot air) of the section 21 blows out from the rear seat foot outlet toward the rear seat foot opening 30b toward the foot of the rear seat occupant.

  Further, since the defroster opening 24 is slightly opened, a part of the conditioned air (mainly hot air) of the first air mixing unit 20 blows out from the defroster outlet to the vehicle front window glass through the defroster opening 24. , Anti-fogging of the front window glass.

  Here, on the front seat side, the ratio of the blown air volume from the defroster opening 24 and the blown air volume from the front seat foot opening 29 is usually a ratio of about 2 to 8, but more than in the foot blowing mode. If the degree of opening of the defroster opening 24 is increased, the ratio of the blown air volume from the defroster opening 24 and the blown air volume from the front seat foot opening 29 can be set to a ratio of about 5 to 5. Thereby, the foot defroster blowing mode in which the defogging effect of the window glass is higher than the foot blowing mode can be set.

(4) Defroster blowing mode When the occupant operates a front seat side blowing mode setting device (not shown) and the defroster blowing mode is selected, the ECU 50 operates the blowing mode switching door to open the defroster opening 24. The front seat face opening 25, the front seat foot opening 29, the rear seat face opening 30a and the rear seat foot opening 30b are closed. At the same time, the ECU 50 operates the face foot communication door 32 to fully open the face foot communication ports 31 of the first and second air mixing units 20 and 21.

  As a result, both the conditioned air (mainly hot air) of the first air mixing unit 20 and the conditioned air (mainly hot air) of the second air mixing unit 21 pass through the defroster opening 24 from the defroster outlet to the vehicle front window. It blows out towards the glass and prevents fogging of the front window glass.

  In each of these blowing modes, the operation position (sliding position) of each of the above-described air mix doors 18a, 18b, 19a, 19b, 19c is independently controlled, so that the driver's seat side, passenger seat side and rear seat side Side air temperature can be controlled independently.

  Here, the independent control of each air mix door 18a, 18b, 19a, 19b, 19c will be described. The ECU 50 substitutes the driver's seat side set temperature Tset1, the inside air temperature Tr, the outside air temperature Tam, and the solar radiation amount Ts into the following formula 1. Then, the driver's seat side target outlet temperature TAO1 is calculated.

  The driver's seat side target outlet temperature TAO1 is a target outlet temperature from the driver's seat face outlet and the driver's seat foot outlet that is required for the detected temperature Tr of the inside air temperature sensor to maintain the driver's seat side set temperature Tset1. is there.

TAO1 = Kset1 × Tset1-KR × Tr
−KAM × Tam−KS × Ts + C (Formula 1)
Kset1, KR, KAM, and KS are gains, and C is a correction constant.

  Similarly, the ECU 50 calculates the passenger seat side target blowing temperature TAO2 based on the passenger seat side set temperature Tset2 and the like, and calculates the rear seat side target blowing temperature TAO3 based on the rear seat side set temperature Tset3 and the like.

  Then, the driver seat side target blowing temperature TAO1, the blowing temperature TE of the evaporator 12, and the hot water temperature Tw to the heater core 13 are substituted into the following formula 2 to set the target opening SW1 of the driver seat face air mix doors 18a and 19a. calculate.

SW1 = {(TAO1-TE) / (Tw-TE)} × 100 (%) (Equation 2)
Subsequently, an actuator mechanism (not shown) is controlled so that the opening degree of the air mixing doors 18a and 19a for the driver's seat face approaches the target opening degree SW. Thereby, the blowing temperature from the driver seat face outlet and the driver seat foot outlet approaches the driver seat side target outlet temperature TAO1.

  Similarly, the target opening degree SW2 of the passenger seat face air mix doors 18b and 19b is calculated based on the passenger seat side target outlet temperature TAO2 and the like, and the opening degree of the passenger seat face air mix doors 18b and 19b is calculated as the target opening degree. An actuator mechanism (not shown) is controlled so as to approach SW2. Thereby, the blowing temperature from the passenger seat face outlet and the passenger seat foot outlet approaches the passenger seat side target outlet temperature TAO2.

  Similarly, the target opening degree SW3 of the rear-seat air mix door 19c is calculated based on the rear-seat-side target outlet temperature TAO3 and the like, and the opening degree of the rear-seat air mix door 19c is shown close to the target opening degree SW3. Control the actuator mechanism that does not. Thereby, the blowing temperature from the rear-seat face outlet and the rear-seat foot outlet approaches the rear-seat-side target outlet temperature TAO3.

  Further, the ECU 50 performs only the normal air-conditioning mode for air-conditioning the entire region of the vehicle interior based on the signal from the air-conditioning mode setting switch (not shown), and only the front seat side (driver's seat side and passenger seat side) in the vehicle interior. Three air-conditioning modes are selectively performed: a front-seat concentrated air-conditioning mode for air conditioning and a one-seat concentrated air-conditioning mode for air-conditioning only the driver's seat side in the passenger compartment.

  Here, in order to facilitate understanding, the operation of the three air conditioning modes will be described in the case where the foot blowing mode is set. First, the operation when the normal air-conditioning mode is set in the foot blowing mode is the same as the operation of the above-described foot blowing mode, and the conditioned air is blown out to the driver seat side, the passenger seat side, and the rear seat side.

  At this time, since there is almost no pressure difference among the driver foot passage 37, the passenger seat foot passage 38, and the rear seat passage 39, the first and second air conditioning mode doors 33 and 34 are kept closed. ing.

  Next, when the front seat concentrated air conditioning mode is set in the foot blowing mode, as shown in FIG. 3, the ECU 50 operates the blowing mode switching door to drive the driver's seat foot opening 29a and the passenger seat foot opening 29b. And the rear seat face opening 30a and the rear seat foot opening 30b are closed. Thereby, the conditioned air is blown to the front seat side (driver's seat side and passenger seat side), and the conditioned air is not blown to the rear seat side.

  At this time, by closing the rear seat face opening 30a and the rear seat foot opening 30b, the pressure in the rear seat passage 39 is higher than the pressure in the driver foot passage 37 and the passenger foot foot passage 38. The first air conditioning mode door 33 opens toward the driver foot passage 37 and the second air conditioning mode door 34 opens toward the passenger foot foot 38.

  For this reason, as shown by the arrow in FIG. 3, the conditioned air whose temperature is adjusted in the rear seat mixing section 21 c of the rear seat passage 39 flows into the driver seat foot passage 37 and the passenger seat foot passage 38.

  In the front seat centralized air conditioning mode, the ECU 50 corrects the target blowing temperatures TAO1 to TAO3 calculated as in the above-described equation 1 as shown in the flowchart of FIG.

  First, in step S100, it is determined whether or not the target blowing temperatures TAO1 to TAO3 are the same value. When it is determined that the target blowing temperatures TAO1 to TAO3 are the same value (TAO1 = TAO2 = TAO3), the target blowing temperatures TAO1 to TAO3 are not corrected.

  That is, if the target blowing temperatures TAO1 to TAO3 are the same value, the conditioned air temperature in the driver seat mixing unit 21a, the passenger seat mixing unit 21b, and the rear seat mixing unit 21c is almost the same. The conditioned air flowing into the driver seat foot passage 37 and the passenger seat foot passage 38 from the rear seat passage 39 does not change the air conditioning temperature of the driver seat foot passage 37 and the passenger seat foot passage 38. Because.

  If it is determined that the target blowing temperatures TAO1 to TAO3 are not the same value, it is determined in step S110 whether or not the target blowing temperatures TAO1, 2 are the same value. When it is determined that the target blowing temperatures TAO1 and TAO2 are the same value (TAO1 = TAO2), the rear seat side target blowing temperature TAO3 is the same as the driver seat side target blowing temperature TAO1 in step S120 (correction means). Correct to the value. As a result, the target blowing temperatures TAO1 to TAO3 are equal to each other. Therefore, the driver's seat foot passage 37 and the assistant are conditioned by the conditioned air flowing from the rear seat passage 39 into the driver's seat foot passage 37 and the passenger seat foot passage 38. It is possible to prevent the air conditioning air temperature in the seat foot passage 38 from being changed.

  If it is determined that the target blowing temperatures TAO1, 2 are not the same value, the target blowing temperatures TAO1-TAO3 are corrected in step S130 (correction means). Specifically, first, the rear seat side target blowing temperature TAO3 is corrected to an intermediate value between the driver seat side target blowing temperature TAO1 and the passenger seat side target blowing temperature TAO2.

  Then, the driver's seat side target blowing temperature TAO1 calculated by using Formula 1 is the actual driver's seat side blowing temperature after the air conditioning wind from the rear seat passage 39 is mixed with the conditioned wind of the passage 37 for the driver's seat. The driver's seat side target blowing temperature TAO1 is corrected so as to match.

  Similarly, on the passenger seat side, the actual passenger side blowing temperature after the air conditioning wind from the rear seat passage 39 is mixed with the air conditioning wind in the passenger seat foot passage 38 is calculated using the same equation as in Equation 1. The passenger seat side target blowing temperature TAO2 is corrected so as to coincide with the target blowing temperature TAO2.

  Specifically, the higher target blowing temperature of the driver seat side target blowing temperature TAO1 and the passenger seat side target blowing temperature TAO2 is corrected to a value higher by a predetermined amount ΔTH, and the driver seat side target blowing temperature TAO1 and the passenger seat side are corrected. Of the target blowing temperature TAO2, the lower target blowing temperature is corrected to a value lower by a predetermined amount ΔTL. The predetermined amounts ΔTH and ΔTL may be calculated based on the corrected rear seat side target blowing temperature TAO3 and the like.

  As a result, the conditioned air temperature of the driver foot passage 37 and the passenger foot passage 38 is changed by the conditioned air flowing from the rear seat passage 39 into the driver foot passage 37 and the passenger foot foot passage 38. This can be suppressed.

  In the front seat central air conditioning mode, the ECU 50 may operate the face foot communication door 32 to fully open the face foot communication ports 31 of the first and second air mixing units 20 and 21. Accordingly, the conditioned air in the driver seat face passage 45 and the passenger seat face passage 46 can also flow into the driver seat foot passage 37 and the passenger seat foot passage 38.

  That is, the entire amount of the cool air after passing through the evaporator 12 and the warm air after passing through the heater core 13 can be introduced into the driver seat foot passage 37 and the passenger seat foot passage 38 and blown out to the front seat side. Thus, the cooling capacity of 12 and the heating capacity of the heater core 13 can be used effectively.

  On the other hand, when the one-seat concentrated air-conditioning mode is set in the foot blowing mode, as shown in FIG. 7, the ECU 50 operates the blowing mode switching door to open the driver's seat foot opening 29a, and the passenger's seat foot opening. 29b, the rear seat face opening 30a and the rear seat foot opening 30b are closed. As a result, the conditioned air is blown to the driver seat side, and the conditioned air is not blown to the passenger seat side and the rear seat side.

  At this time, by closing the passenger seat foot opening 29b, the rear seat face opening 30a, and the rear seat foot opening 30b, the pressure in the passenger seat foot passage 38 and the pressure in the rear seat passage 39 are changed to the driver seat foot passage 37. Therefore, the first and second air conditioning mode doors 33 and 34 open to the driver's seat foot passage 37 side.

  For this reason, as shown by the arrow in FIG. 7, the temperature is adjusted by the air conditioning air temperature adjusted by the passenger seat foot mixing portion 21 b of the passenger seat foot passage 38 and the rear seat mixing portion 21 c of the rear seat passage 39. The conditioned air flows into the driver's seat foot passage 37.

  In the one-seat centralized air conditioning mode, the ECU 50 corrects the target outlet temperatures TAO1 to TAO3 calculated as in the above-described equation 1 as shown in the flowchart of FIG.

  First, in step S200, it is determined whether or not the target blowing temperatures TAO1 to TAO3 are the same value. When it is determined that the target outlet temperatures TAO1 to TAO3 are the same value (TAO1 = TAO2 = TAO3), the target outlet temperatures TAO1 to TAO3 are not corrected, as in the one-seat concentrated air conditioning mode described above.

  If it is determined that the target blowing temperatures TAO1 to TAO3 are not equal to each other, in step S210 (correction means), the passenger seat side target blowing temperature TAO2 and the rear seat side target blowing temperature TAO3 are set to the driver seat side target blowing temperature TAO1. Is corrected to the same value.

  As a result, the target blowing temperatures TAO1 to TAO3 have the same value as each other. Therefore, the air conditioning air flowing into the driver seat foot passage 37 from the passenger seat foot passage 38 and the rear seat passage 39 is used to air-condition the driver seat foot passage 37. It is possible to prevent the wind temperature from changing.

  In the one-seat concentrated air conditioning mode, the ECU 50 may operate the face foot communication door 32 to fully open the face foot communication ports 31 of the first and second air mixing units 20 and 21. Thus, the conditioned air in the driver seat face passage 45 and the passenger seat face passage 46 can also flow into the driver seat foot passage 37.

  That is, since the entire amount of the cool air after passing through the evaporator 12 and the warm air after passing through the heater core 13 can be introduced into the driver seat foot passage 37 and blown out to the driver seat side, the cooling capacity by the evaporator 12 and the heater core 13 can be blown out. The heating capacity by can be used effectively.

  As described above, in the present embodiment, since the first and second air conditioning mode doors 33 and 34 are opened and closed by the pressure difference between the passages, an actuator for opening and closing the air conditioning mode doors 33 and 34 is not necessary, and cost increase is suppressed. it can.

  Further, since the target blowing temperatures TAO1 to TAO3 are corrected as shown in the flowcharts of FIGS. 6 and 8 in the front seat concentrated air conditioning mode and the one seat concentrated air conditioning mode, the blowing in the front seat concentrated air conditioning mode and the one seat concentrated air conditioning mode is performed. A change in temperature can be suppressed.

  In the description of the operation of the normal air conditioning mode, the front seat centralized air conditioning mode, and the one-seat centralized air conditioning mode, the case where the foot blowing mode is set has been described. However, the blowing mode other than the foot blowing mode (face blowing mode, When the bi-level blowing mode, the foot blowing mode, and the foot defroster blowing mode) are set, the target blowing temperatures TAO1 to TAO3 are corrected by operating the blowing mode switching door based on the same concept as described above. For example, the same effect can be obtained in the blowing modes other than the foot blowing mode.

(Other embodiments)
In the above-described embodiment, in step S130, the rear-seat-side target blowing temperature TAO3 is corrected to an intermediate value between the driver-seat-side target blowing temperature TAO1 and the passenger-seat-side target blowing temperature TAO2, but this is not limitative. The actual driver's seat side blowing temperature is equal to the driver's seat target blowing temperature TAO1 calculated using Equation 1, and the actual passenger seat's blowing temperature is calculated using Equation similar to Equation 1. If the driver-seat-side target blowout temperature TAO1 and the passenger-seat-side target blowout temperature TAO2 are corrected so as to coincide with the passenger-side target blowout temperature TAO2, the driver-seat-side target blowout temperature TAO3 is not necessarily changed. There is no need to correct the intermediate value between the temperature TAO1 and the passenger side target blowing temperature TAO2.

  Further, in the above-described embodiment, the first air conditioning mode door 33 and the driver's seat side communication port 35a are arranged downstream of the second air conditioning mode door 34 and the passenger seat side communication port 36a by a predetermined dimension (the vehicle rear side). However, it is not always necessary to dispose on the downstream side of the air flow, and may be disposed at the same position in the air flow direction.

  In the above embodiment, the face foot communication door 32 is rotated by an actuator mechanism. However, the face foot communication door 32 is connected to the passage in the same manner as the first to third air conditioning mode doors 33, 34, 47. You may make it the door opened and closed by a pressure difference. Specifically, the face foot communication door 32 can be opened and closed by the pressure difference between the first and second air mixing units 20 and 21.

  Moreover, in the said one Embodiment, although the 1st-3rd air conditioning mode doors 33, 34, and 47 are opened and closed by the pressure difference of a channel | path, the 1st-3rd air conditioning mode doors 33, 34, and 47 are set by an actuator mechanism. You may rotate.

  Moreover, in the said one Embodiment, although the 1st, 2nd air mix doors 18 and 19 and the face door 26 are comprised by the slide door, the 1st, 2nd air mix door 18 is a plate door rotated by a rotating shaft. 19 and the face door 26 may be configured.

It is sectional drawing of the air conditioning unit of the vehicle air conditioner in 1st Embodiment. It is sectional drawing which shows the air conditioning unit of FIG. 1 typically. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is an expanded sectional view which shows the 1st air-conditioning mode door vicinity of FIG. It is a flowchart which shows the outline | summary of control of ECU in front seat concentrated air conditioning mode. It is sectional drawing which shows the state in the 1-seat concentrated air conditioning mode of FIG. It is a flowchart which shows the outline | summary of control of ECU in 1 seat concentration air conditioning mode. It is typical sectional drawing of the air conditioning unit of the vehicle air conditioner in the examination example.

Explanation of symbols

11 Case 12 Evaporator (cooling heat exchanger)
13 Heater core (heat exchanger for heating)
19a, 19b, 19c 1st air mix door (air mix door)
29a Driver's seat foot opening (driver's seat opening)
29b Passenger seat foot opening (passenger seat opening)
30a, 30b Rear seat opening 33 First air conditioning mode door (plate door)
34 Second air conditioning mode door (plate door)
35 Driver's seat side partition wall (partition wall)
36 Passenger side partition wall (partition wall)
37 Foot passage for driver's seat (passage for driver's seat)
38 Passage for passenger seat (passage for passenger seat)
39 Rear seat passage 40, 41, 42, 43 Opening door 50 ECU (control means)

Claims (7)

A case (11) that forms an air passage through which air flows toward the passenger compartment and an opening (29, 30) through which the air that flows through the air passage flows out;
A cooling heat exchanger (12) for cooling the air flowing through the air passage;
A heating heat exchanger (13) disposed in the air passage for heating the air that has passed through the cooling heat exchanger (12);
An air mix door (19) that is arranged in the air passage and adjusts the air volume ratio between the hot air passing through the heating heat exchanger (13) and the cold air flowing bypassing the heating heat exchanger (13). When,
Control means (50) for calculating a target blowing temperature from the openings (29, 30) and controlling the air mix door (19) based on the target blowing temperature;
The case (11) includes a driver seat passage (37), a passenger seat passage (38), and a rear seat passage (39) located downstream of the cooling heat exchanger (12) in the air passage. ) Partition walls (35, 36),
The air mix door (19) includes a driver seat air mix door (19a) that adjusts an air volume ratio between the warm air and the cool air in the driver seat passage (37), and the passenger seat passage (38). A passenger seat air mix door (19b) for adjusting the air volume ratio between the warm air and the cold air, and a rear seat air for adjusting the air volume ratio between the warm air and the cold air in the rear seat passage (39). A mix door (19c),
The openings (29, 30) are a driver seat opening (29a) through which air flowing through the driver seat passage (37) flows out, and an assistant through which air flows through the passenger seat passage (38). A seat opening (29b) and a rear seat opening (30a, 30b) through which air flowing through the rear seat passage (39) flows out;
The target blowing temperature is a driver's seat side target blowing temperature that is a target blowing temperature from the driver seat opening (29a) and a passenger's seat side target blowing that is a target blowing temperature from the passenger seat opening (29b). A rear seat side target blowing temperature that is a temperature and a target blowing temperature from the rear seat opening (30a, 30b),
The case (11) includes an opening door (40, 41, 40) that opens and closes the driver seat opening (29a), the passenger seat opening (29b), and the rear seat opening (30a, 30b). 42, 43) are arranged,
The driver's seat passage (37), the passenger seat passage (38), and the rear seat are disposed in a portion of the partition walls (35, 36) on the downstream side of the air flow from the heating heat exchanger (13). Communication ports (35a, 36a) for communicating the seat passage (39) are formed,
The case (11) includes a plate that opens and closes the communication port (35a, 36a) due to a pressure difference between the driver seat passage (37), the passenger seat passage (38), and the rear seat passage (39). Doors (33, 34) are arranged,
The opening door (40-43) closes the rear seat opening (30a, 30b) and opens the driver seat opening (29a) and the passenger seat opening (29b), thereby The air conditioning mode for blowing air from the opening (29a) and the passenger seat opening (29b) is a front seat centralized air conditioning mode,
The opening door (40-43) closes the passenger seat opening (29b) and the rear seat opening (30a, 30b) and opens the driver seat opening (29a), so that the driver seat When the air-conditioning mode for blowing air from the opening (29a) is a one-seat concentrated air-conditioning mode,
The control means (50) includes at least one of the driver seat side target blowing temperature, the passenger seat side target blowing temperature, and the rear seat side target blowing temperature in the front seat concentrated air conditioning mode and the one seat concentrated air conditioning mode. Correction means (S120, S130, S210) for correcting one target blowing temperature;
The correction means (S120, S130, S210) is configured to control the at least one target blowing temperature so as to suppress a change in the blowing temperature caused by the plate door (33, 34) opening the communication port (35a, 36a). The vehicle air conditioner is characterized by correcting the above. When the correction means (S130) is in the front seat central air conditioning mode,
The rear seat side target blowing temperature is corrected to an intermediate value between the driver seat side target blowing temperature and the passenger seat side target blowing temperature,
Of the driver's seat side target blowing temperature and the passenger's seat side target blowing temperature, the higher target blowing temperature is corrected to a predetermined amount higher value,
2. The vehicle air conditioner according to claim 1, wherein the lower target air temperature of the driver seat side target air temperature and the passenger seat side target air temperature is corrected to a value lower by a predetermined amount.   The correction means (S210) corrects the passenger-seat-side target blowing temperature and the rear-seat-side target blowing temperature to the same values as the driver-seat-side target blowing temperature in the one-seat concentrated air conditioning mode. The vehicle air conditioner according to claim 1. The plate doors (33, 34) are disposed when the pressure difference between the driver seat passage (37), the passenger seat passage (38), and the rear seat passage (39) is equal to or greater than a predetermined pressure difference. It is configured to open the communication port (35a, 36a),
The predetermined pressure difference is such that the opening doors (40 to 43) include the driver seat opening (29a), the passenger seat opening (29b), and the rear seat opening (30a, 30b). The vehicle air conditioner according to any one of claims 1 to 3, wherein the pressure difference is a pressure difference generated when at least one opening is closed and at least one opening is opened. The driver seat passage (37) is a driver foot passage.
The passenger seat passage (38) is a passenger foot passage.
The driver seat opening (29a) is a driver foot opening.
The passenger seat opening (29b) is a passenger seat foot opening,
The case (11) has a face side that partitions a portion of the air passage downstream of the cooling heat exchanger (12) into a driver seat face passage (45) and a passenger seat face passage (46). Having a partition wall (44),
The case (11) flows out of the driver seat face opening (25a) through which the air flowing through the driver seat face passage (45) flows out and the air flowing through the passenger seat face passage (46). A passenger seat face opening (25b) is formed,
The case (11) is provided with a face door (26) for opening and closing the driver seat face opening (25a) and the passenger seat face opening (25b),
The face side partition wall (44) is formed with a face side communication port (44a) that communicates the driver seat face passage (45) and the passenger seat face passage (46),
The case (11) includes a face side plate door (47) that opens and closes the face side communication port (44a) by a pressure difference between the driver seat face passage (45) and the passenger seat face passage (46). The vehicle air conditioner according to any one of claims 1 to 4, wherein the vehicle air conditioner is provided. The case (11) includes a driver seat face foot partition wall (17a) that partitions the driver seat face passage (45) and the driver seat foot passage (37), and the passenger seat face passage (46). A passenger seat face foot partition wall (17b) that partitions the passenger foot foot passage (38);
The driver seat face foot partition wall (17a) is formed with a driver seat face foot communication port (31a) that communicates the driver seat face passage (45) and the driver seat foot passage (37).
The passenger seat face foot partition wall (17b) is formed with a passenger seat face foot communication port (31b) communicating the passenger seat face passage (46) and the passenger seat foot passage (38),
The case (11) has a driver seat face foot communication port that opens and closes the driver seat face foot communication port (31a) due to a pressure difference between the driver seat face passage (45) and the driver seat foot passage (37). Passenger seat face foot communication door that opens and closes the passenger seat face foot communication port (31b) by a pressure difference between the door (32a) and the passenger seat face passage (46) and the passenger seat foot passage (38). The vehicle air conditioner according to claim 5, wherein 32b) is arranged. A case (11) that forms an air passage through which air flows toward the passenger compartment and an opening (25) through which the air that flows through the air passage flows out;
A cooling heat exchanger (12) for cooling the air flowing through the air passage;
A heating heat exchanger (13) disposed in the air passage for heating the air that has passed through the cooling heat exchanger (12);
An air mix door (18) that adjusts the air volume ratio between the hot air that passes through the heating heat exchanger (13) and the cold air that bypasses the heating heat exchanger (13) and is disposed in the air passage. When,
Control means (50) for calculating a target blowing temperature from the opening (25) and controlling the air mix door (18) based on the target blowing temperature;
The case (11) includes a partition wall (44) that partitions a portion of the air passage downstream of the cooling heat exchanger (12) into a driver seat passage (45) and a passenger seat passage (46). Have
The air mix door (18) includes a driver seat air mix door (18a) for adjusting the air volume ratio of the warm air and the cold air in the driver seat passage (45), and the passenger seat passage (46). In the passenger seat air mix door (18b) for adjusting the air volume ratio of the warm air and the cold air,
The opening (25) includes a driver seat opening (25a) through which air flowing through the driver seat passage (45) flows out, and a passenger seat through which air flowing through the passenger seat passage (46) flows out. Opening (25b) for
The target blowing temperature is a driver seat side target blowing temperature which is a target blowing temperature from the driver seat opening (25a) and a passenger seat side target which is a target blowing temperature from the passenger seat opening (25b). The blowout temperature,
The case (11) is provided with an opening door (26) for opening and closing the driver seat opening (25a) and the passenger seat opening (25b),
A communication port for communicating the driver seat passage (45) and the passenger seat passage (46) to a portion of the partition wall (44) on the downstream side of the air flow from the heating heat exchanger (13). (44a) is formed,
The case (11) is provided with a plate door (47) that opens and closes the communication port (44a) due to a pressure difference between the driver seat passage (45) and the passenger seat passage (46).
The opening door (26) opens the driver seat opening (25a) and the passenger seat opening (25b), and the driver seat opening (25a) and the passenger seat opening (25b). The air conditioning mode that blows air from the front is the front seat centralized air conditioning mode,
The opening door (26) closes the passenger seat opening (25b) and opens the driver seat opening (25a), and the air conditioning mode for blowing air from the driver seat opening (25a) is 1 When the seat centralized air conditioning mode is selected,
The control means (50) corrects at least one target outlet temperature among the driver seat side target outlet temperature and the passenger seat side target outlet temperature in the front seat central air conditioning mode and the one seat central air conditioning mode. Having correction means,
The said correction | amendment means correct | amends the said at least 1 target blowing temperature so that the change of the blowing temperature accompanying the said plate door (33, 34) opening the said communication port (44a) may be suppressed. Air conditioner.

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