JPH11180128A - Air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the outside air from blowing out from the aspirator and disturbing the occupants in the cabin in using dual airflow mode of a vehicle air conditioner capable of setting dual airflow mode of inside and outside air. SOLUTION: An aspirator 30 is disposed such that it communicates with a second air passage 10 where the inside air flows in the dual airflow mode with inside and outside air. Negative pressure is generated by the inside air leaking out from the second air passage 10. Further, the aspirator 30 is connected to a hose for sucking the air from the cabin, in which a thermal sensor is provided for detecting the temperature of the air taken in from the cabin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an air-conditioning case in which a passage inside an air-conditioning case is divided into a first air passage on the outside air side and a second air passage on the inside air side, so that the high-temperature inside air warmed from the foot opening is formed. The present invention relates to a vehicle air conditioner capable of setting a so-called inside / outside air two-layer flow mode in which low-humidity outside air is blown out from a defroster opening while being recirculated and blown out.

[0002]

2. Description of the Related Art The present applicant has previously filed Japanese Patent Application No. 8-279.
No. 552 proposes an air conditioner for a vehicle in which such a two-layer air / outside air mode can be set. The configuration is shown in FIG.
Shown in One end of the air-conditioning case 72 has an inside air inlet and an outside air inlet (both not shown), and the other end has a foot opening 8.
5. Defroster opening 86 and face opening 87
Are formed respectively. An inside / outside air switching box 73 having two fans 76a and 76b is formed on the inside air / outside air suction port side.
To 87 are doors 88 to 90 for opening and closing these openings.
Is provided.

In the air-conditioning case 72, a first air passage extending from the outside air suction port to the defroster opening 86 is provided.
A partition wall (partition plate) 82 that defines an air passage (outside air side passage) 84 and a second air passage (inside air side passage) 83 extending from the inside air suction port to the face opening 87 and the foot opening 85. Is provided. Further, a refrigerant evaporator (evaporator) 77,
Heater core (heat exchanger) 78 and air mix door 81
Are provided respectively.

When one of the face mode, the bi-level mode, and the foot mode is selected as the blowing mode, if the inside / outside air mode at that time is the inside air circulation mode, the inside of the two air passages 83, 84 is set. In the outside air introduction mode, outside air is introduced into both air passages. When the defroster mode is selected as the blowing mode, outside air is introduced into both air passages.

Further, when the foot defroster mode is selected as the blowing mode, a two-layer flow of inside / outside air in which outside air is usually introduced into the first air passage 84 and inside air is introduced into the second air passage 83 is set. . As a result, the interior air that has already been heated can be recirculated and blown out from the foot opening 85 to heat the interior of the vehicle, so that the temperature of the air blown into the interior of the vehicle can be increased and the heating performance can be improved. At the same time, low humidity outside air is blown out from the defroster opening 86 to the window glass, so that the anti-fog performance of the window glass can be secured.

[0006]

Incidentally, the air conditioner for a vehicle is provided with a temperature sensor (inside air sensor) for detecting the temperature in the vehicle compartment in order to control the temperature of the air blown into the vehicle compartment. This inside air sensor generally uses an aspirator mounted on the side of an air conditioning case so that air in the vehicle compartment is sucked into the sensor, and is mounted in an air hose leading to the aspirator.

[0007] Then, the action of a negative pressure generated in the aspirator by slightly leaking conditioned air from the air passage in the air conditioning case to the aspirator (so-called ejector action).
Thereby, the air in the vehicle compartment is taken into the air hose. Therefore, since the cabin air circulates through the inside air sensor, an average cabin temperature can be obtained. However, as a result of the study by the present inventors, when the aspirator is mounted in communication with the first air passage (outside air side passage) 84 in the above-described inside / outside air two-layer flow mode, for example, when the air is used for heating, etc. Found that there is a problem that the cold air blows out from the aspirator and hits the occupant, causing discomfort.

In view of the above, the present invention has been made in view of the above, and in a vehicle air conditioner capable of setting a two-layer flow of inside / outside air, in a two-layer flow of inside / outside air, outside air is blown from an aspirator and hits an occupant in a vehicle compartment. The purpose is to prevent.

[0009]

SUMMARY OF THE INVENTION The present invention achieves the above object by focusing on devising a mounting position of an aspirator for an inside air sensor in a vehicle air conditioner in which a two-layer inside / outside air mode can be set. It is assumed that. That is, according to the first and second aspects of the present invention, the second air passage (1) through which the inside air flows in the inside / outside air two-layer flow mode.
Aspirator (3) which is provided in communication with the aspirator (3) and generates a negative pressure by the inside air leaking from the second air passage (10).
0), a hose (40) for sucking vehicle interior air by the negative pressure of the aspirator (30), and a temperature sensor (50) for detecting the temperature of the vehicle interior air sucked into the hose (40). It is characterized by having.

According to this, since the aspirator (30) is provided in communication with the second air passage (10) through which the inside air flows in the inside / outside air two-layer flow mode, the air blown out from the aspirator (30) is blown by the inside air. It is wind and there is no discomfort when hitting the occupants. Therefore, for example, when using heating or the like, the cold air of the outside air blows out from the aspirator and does not hit the occupant in the passenger compartment and cause discomfort to the occupant.

If the aspirator blows cold air from the outside air, the aspirator must be mounted so that the blown wind does not hit the occupants in the passenger compartment. However, in the present invention, there is no such limitation. The degree of freedom in mounting is increased. Also, in the invention according to claim 3, the aspirator (30) according to claim 1 or 2 communicates with a portion of the second air passage (10) on the downstream side of the air of the heating heat exchanger (14). The heat exchanger for heating (1
The comfortably air-conditioned wind in 4) is blown out from the aspirator (30), so that the occupant's discomfort can be further reduced.

The reference numerals in parentheses attached to the respective means indicate the correspondence with specific means described in the embodiments described later.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in FIGS. This embodiment is applied to a low heat source vehicle in which the temperature of hot water (engine cooling water) is relatively low, such as a diesel engine vehicle. Here, FIG. 1 is an explanatory diagram showing the overall configuration of the vehicle air conditioner of the present embodiment, FIG. 2 is an explanatory diagram showing the vehicle air conditioner of FIG. 1 mounted on a vehicle, and FIG. It is explanatory drawing which expands and shows a structure.

As shown in FIG. 2, the ventilation system of the air conditioner is roughly divided into a blower unit (blower assembly) 1 and a cooler unit (cooler assembly) 1.
00 and a heater unit (heater assembly) 101. The heater unit 101
In the lower part of the instrument panel (instrument panel) in the vehicle interior, it is arranged at a substantially central portion in the vehicle left-right direction (in FIG. 2, on the vehicle rear side of the engine E). On the other hand, the blower unit 1 and the cooler unit 100 are shown in the illustrated form of FIG. 2 in a state where they are offset to the left of the heater unit 101 and slightly forward of the heater unit 101 in the vehicle.

First, the blower unit 1 will be specifically described. First and second two inside air introduction ports 2, 3 for introducing inside air (vehicle interior air) into the blower unit 1 will be described.
And one outside air inlet 4 for introducing outside air (outside the vehicle compartment)
Is provided. These inlets 2 to 4 can be opened and closed by first and second two inside / outside air switching doors 5 and 6, respectively. The number of inside air introduction ports may be three or more, and an inside / outside air switching door is provided according to each inside air introduction port.

The inside / outside air switching doors 5 and 6 are flat plates that are pivotally operated around rotating shafts 5a and 6a, respectively. (Not shown) is connected to a manual operation mechanism for switching between inside and outside air (a mechanism using a lever and a dial), and is operated in conjunction with the inside or outside air switching door 5,
6 is operated in conjunction with an inside / outside air switching actuator mechanism using a servomotor.

In this embodiment, the inside / outside air switching means is constituted by the inside / outside air introduction ports 2, 3, the outside air introduction port 4, the inside / outside air switching doors 5, 6, and the manual operation mechanism or the actuator mechanism. A first (outside air side) fan 7 and a second (inside air side) fan 8 for blowing the air introduced from the inlets 2 to 4 are arranged in the blower unit 1. The two fans 7 and 8 are each composed of a well-known centrifugal multi-blade fan (sirocco fan).
At b, they are simultaneously driven to rotate.

FIG. 1 shows a state of a two-layer flow mode which will be described later. The first inside / outside air switching door 5 closes the first inside air introduction port 2 and opens the outside air passage 4a from the outside air introduction port 4. Therefore, outside air is sucked into the suction port 7a of the first (outside air side) fan 7. On the other hand, the second inside / outside air switching door 6 opens the second inside air inlet 3 to open the outside air passage 4 b from the outside air inlet 4.
, The inside air is sucked into the suction port 8 a of the second (inside air side) fan 8.

Therefore, in this state, the first fan 7
Outside air from the outside air inlet 4 is supplied to a first air passage (outside air passage).
9, the second fan 8 blows the inside air from the inside air inlet 3 to the second air passage (inside air side passage) 10, and separates both the inside air and the outside air and simultaneously sucks the inside and outside air 2 It is in laminar flow mode (foot differential mode described later). Further, in the blower unit 1, the inside / outside air switching doors 5, 6 are provided.
, The inside / outside air suction mode can be changed in addition to the two-layer flow mode. In the all inside air mode, both outside air passages 4a, 4b are closed by both inside / outside air switching doors 5, 6, so that both inside air introduction ports 2, 3 allow both air passages 9, 1 to be opened.
Inside air is inhaled at 0 at the same time. In the all outside air mode, both inside air introduction ports 2 and 3 are closed by both inside and outside air switching doors 5 and 6, so that both outside air passages 4 a and 4 b are connected to both air passages 9 and 9.
The outside air is simultaneously sucked into 10.

The first and second air passages 9 and 10 are formed integrally with a resin scroll case 12 for accommodating the fans 7 and 8 inside a resin air conditioning case 11 for partitioning the main body of the air conditioner. Partition plate 12a and partition plates 11a, 11b, 11 integrally formed in the air conditioning case 11.
c. That is, the first and second air passages 9 and 10 are connected to the blower unit 1 and the cooler unit 100.
In the present embodiment, the first air passage 9 is disposed on the rear side of the vehicle and the second air passage 10 is disposed on the front side of the vehicle, as shown in FIG. Here, each of the partition plates 11a to 11c and 12a
Is a fixed partition member that extends substantially horizontally in the vertical direction in this example.

In this embodiment, the outer diameter of the second fan 8 is made smaller and the outer diameter of the first fan 7 is made larger. This is to prevent the opening area of the suction port 7a from decreasing due to the presence of the electric motor 7b on the first fan 7 side. Next, the cooler unit 100 and the heater unit 101 are of a type in which both the evaporator (cooling heat exchanger) 13 and the heater core (heating heat exchanger) 14 are integrally built in the air conditioning case 11. is there.

The air-conditioning case 11 is made of a molded article of a resin such as polypropylene having a certain degree of elasticity and excellent strength, and has a plurality of divided surfaces in the vertical direction (vertical direction of the vehicle) in FIG. Of split cases. After storing the heat exchangers 13 and 14 and devices such as doors described later in the plurality of divided cases, the plurality of divided cases are integrally joined by fastening means such as metal spring clips and screws. The cooler unit 100 and the heater unit 101 are assembled.

In the air-conditioning case 11, an evaporator (evaporator) 13 is provided at the leftmost position, and the evaporator 13 is disposed so as to cross the entire first and second air passages 9 and 10 in the air-conditioning case 11. ing. As is well known, the evaporator 13 absorbs latent heat of evaporation of the refrigerant in the refrigeration cycle from the conditioned air to cool the conditioned air. The evaporator 13 is of a well-known lamination type, and a large number of flat tubes formed by laminating two thin metal plates of aluminum or the like in the middle are laminated and arranged via corrugated fins and brazed integrally. Things. The interior of the evaporator 13 can partition the air passage on the extension of the ends of the partition plates 11a and 11b by the fin surface of the corrugated fin or the flat surface of the flat tube. The second air passage 10 and the second air passage 10 can be defined.

The heater core 14 is arranged downstream of the evaporator 13 in the air flow direction (rear side of the vehicle) at a predetermined interval and is adjacent to the first air passage 9 between the partition plates 11b and 11c. The two air passages 10 are disposed so as to straddle both. The heater core 14 has a thin shape in the front-rear direction of the vehicle and reheats cold air that has passed through the evaporator 13. For example, high-temperature engine cooling water (hot water) flows inside the heater core 14. Is used as a heat source to heat air.

The heater core 14 is a well-known one. A large number of flat tubes formed by joining thin metal plates of aluminum or the like to have a flat cross-section by welding or the like are laminated and arranged via corrugated fins and brazed integrally. Things. The inside of the heater core 14 is divided by the fin surface of the corrugated fin or the flat surface of the flat tube into the partition plate 11b,
The air passage can be partitioned on the extension of the end of 11c, so that the first air passage 9 and the second air passage 10 can also be defined inside the heater core 14.

The heater core 14 is connected to each air passage 9,
Not across all ten. Therefore, a region that bypasses the heater core 14 in each of the air passages 9 and 10, that is, a bypass passage (not shown) is formed. On the air upstream side of the heater core 14, two plate-shaped air mix doors (air volume ratio adjusting means) 15 are provided so that the respective plate surfaces are the same. The air mix door 15 rotates around a rotation shaft 15 a rotatably provided with respect to the air conditioning case 2. The driving of the rotating shaft 15a is performed by rotating the rotating shaft 15a by a servo motor (not shown) connected to the rotating shaft 15a.

In other words, the air mix door 15 adjusts the ratio of the amount of cool air passing through the heater core 14 to the amount of cool air passing through the bypass passage (not shown) depending on the stop position, so that air blown into the vehicle cabin is adjusted. The temperature is adjusted. In the air-conditioning case 11, openings 16, 18, and 2, which will be described below,
2 are formed.

A defroster opening 16 communicating with the first air passage 9 immediately after the heater core 14 is opened above the air conditioning case 11 (see FIG. 2). The defroster opening 16 is for blowing air toward the inner surface of the vehicle window glass through a defroster duct and a defroster outlet (not shown). The defroster opening 16 is opened and closed by a defroster door 17, and the defroster door 17 has a butterfly shape that is rotatable about a rotating shaft 17a.

At the rear side of the air-conditioning case 11 on the vehicle,
A face opening 18 communicating with the first air passage 9 immediately after the heater core 14 is open. This face opening 18
Is for blowing air from the face outlet above the instrument panel toward the head of the occupant through a face duct (not shown). The face opening 18 is the face door 1
9, the face door 19 is rotated by a rotating shaft 19.
a makes the shape of a butterfly rotatable.

Here, the face opening 18 shown in FIG.
Actually, as shown in FIG. 2, a plurality of openings 18 are further provided on the downstream side of the air by the duct 180.
a and 18b. That is, it is constituted by a center face opening 18a opened to the rear of the vehicle and a side face opening 18b opened to the left and right of the vehicle.

The end of the partition plate 11c on the most downstream side of the air, together with the wall surface of the air-conditioning case 11, is first and second.
A communication passage 20 communicating between the air passages 9 and 10 is provided. The communication passage 20 is opened and closed by a flat communication door 21 rotatable by a rotation shaft 21a. A foot opening 22 is opened in a lower portion of the right side of the vehicle of the air conditioning case 11 (see FIG. 2), and the foot opening 22 is formed in the heater core 14 in the second air passage 10.
Is communicated with a portion on the downstream side of the air. The foot opening 22 is for blowing warm air from a foot outlet to a foot of an occupant in the vehicle cabin through a foot duct (not shown). The foot opening 22 is opened and closed by a foot door 23, and the foot door 23 has a butterfly shape rotatable about a rotation shaft 23a.

Each of the openings 16 and 18 in FIG.
The position of 22 is schematic and different from FIG. 2, but in the present embodiment, each opening 16, 18a, 18b
2 and 22 have the positional relationship shown in FIG. Further, the defroster door 17, the face door 19, the communication door 21, and the foot door 23 are door means for switching the blowing mode, and are connected to a manual operating mechanism for switching the blowing mode of the air conditioning operation panel via a link mechanism, a cable, and the like (not shown). They are connected and operated in conjunction with each other, or the door means for switching the blowing mode is operated in conjunction with a mode switching actuator mechanism using a servomotor.

Each of these doors 17, 19, 21,
By the switching operation of 23, a well-known blowing mode such as a face mode, a bi-level mode, a foot mode, a foot differential mode and a defroster mode is switched. Hereinafter, the blowing mode will be briefly described. Face mode The face opening 19 is fully opened by the face door 19, and the defroster opening 16 is opened by the defroster door 17.
Close. In addition, the foot door 23 has a foot opening 2.
2 is closed, and the communication passage 20 is opened by the communication door 21. As a result, the conditioned air whose temperature has been adjusted by the air mix door 15 is sent only to the face opening 18.

In the bilevel mode, the face opening 18 is opened by the face door 19, and the defroster opening 16 is opened by the defroster door 17.
Close. In addition, the foot door 23 has a foot opening 2.
2 and the communication passage 20 is closed by the communication door 21. As a result, of the conditioned air that has been temperature-controlled by the air mix door 15, the conditioned air that has flowed through the first air passage (outside air passage) 9 flows to the face opening 18 into the second air passage (inside air passage). The air-conditioned air flowing through 10 has a foot opening 2
It is blown to 2.

In the foot mode, the face opening 18 is closed by the face door 19, and the defroster opening 16 is
Slightly open. The foot opening 23 is opened by the foot door 23, and the communication path 2 is opened by the communication door 21.
Close 0. As a result, of the conditioned air that has been temperature-controlled by the air mix door 15, the conditioned air that has flowed through the second air passage 10 flows to the foot opening 22, and the conditioned air that has flowed through the first air passage 9 passes through the defroster opening. The air is sent to the unit 16. In this case, the ratio of the volume of the conditioned air sent to the foot opening 22 and the defroster opening 16 is about 8 to 2.

Foot differential mode (foot defroster mode) The face opening 18 is closed by the face door 19, and the defroster opening 16 is closed by the defroster door 17.
Almost fully open. The foot opening 23 is opened by the foot door 23, and the communication path 2 is opened by the communication door 21.
Close 0. As a result, of the conditioned air that has been temperature-controlled by the air mix door 15, the conditioned air that has flowed through the second air passage 10 flows to the foot opening 22, and the conditioned air that has flowed through the first air passage 9 passes through the defroster opening The air is sent to the unit 16. In this case, the ratio of the volume of the conditioned air blown to the foot opening 22 and the defroster opening 16 is about 5 to 5.

FIG. 1 shows a foot differential mode usually used for heating in winter. The defroster mode closes the face opening 18 with the face door 19 and the defroster opening 16 with the defroster door 17.
Almost fully open. Further, the foot opening 23 is closed by the foot door 23, and the communication path 2 is closed by the communication door 21.
Open 0. As a result, of the conditioned air whose temperature has been adjusted by the air mix door 15, the air is blown to the defroster opening 16 from both the first air passage 9 and the second air passage 10.

In each of the above blow modes, the inside / outside air suction mode (two-layer flow mode, all inside air mode, all outside air mode) of the blower unit 1 is appropriately changed by operating the inside / outside air switching doors 5, 6. Selected. Especially,
In the foot differential mode described above, by setting the laminar flow mode, the already heated inside air can be recirculated and blown out from the foot openings 22 to heat the vehicle interior, so that the temperature of the air blown into the vehicle interior becomes high. In other words, heating performance can be improved. At the same time, since low-humidity outside air is blown out from the defroster opening 16 to the window glass, the anti-fog performance of the window glass can be secured.

Next, the aspirator which is a main part of the present invention will be described with reference to FIG. The aspirator 30
As shown in FIG. 1, the second air passage 10 is attached so as to communicate with a portion between the heater core 14 and the foot opening 22. In actuality, as shown in FIG. It is arranged at the lower part of the right side surface, that is, at the part near the foot opening 22.

FIG. 3 is a sectional view showing the detailed structure of the aspirator 30. A pipe 31 is connected to an opening 110 formed in the air conditioning case 11 so as to communicate with the second air passage 10. In the pipe 31, a nozzle portion 33 integrally connected to the branch conduit 32 is projected, and this nozzle portion 3
The gap between the distal end of the tube 3 and the tube 31 is formed as a suction unit 34. The outlet 31a of the pipe 31 opens into the vehicle interior via an outlet provided on an instrument panel (instrument panel) (not shown) in the vehicle interior.

Here, one end of a hose 40 is connected to the end of the branch pipe 32 opposite to the nozzle 33, that is, the end of the pipe 31 on the outside. The other end of the hose 40
It opens into the passenger compartment through a suction port or the like provided in the instrument panel. An inside air sensor 50 capable of detecting a temperature is provided on the instrument panel side in the hose 40. The inside air sensor 50 uses, for example, a thermistor element and uses the physical properties of a thermistor whose resistance changes with temperature.

Accordingly, the heater core 1 of the second air passage 10
A part of the air passing through 4 leaks from opening 110 to pipe 31, so that a negative pressure is generated in suction part 34, and an airflow as shown by an arrow in FIG. .
At this time, the air inside the vehicle is taken into the hose 40, passes through the nozzle 33 of the aspirator 30, and passes through the second air passage 1.
It is blown into the vehicle cabin through the outlet 31a of the pipe 31 together with the air leaking from zero.

As a result, the air inside the vehicle compartment circulates through the hose 40, and the interior air sensor 50 can detect the average vehicle interior temperature. In the present embodiment, the two-layer flow mode is usually used as the inside / outside air suction mode during heating in winter. That is, outside air is introduced from the outside air inlet 4 and flows through the first air passage 9, while inside air flows from the inside air inlet 3 into the second air passage (inside air side passage) 10. Therefore, the wind blown from the aspirator 30 into the vehicle compartment is not the cold wind from the outside air, but only the inside air, and there is no discomfort even if the blown wind hits the occupant.

In particular, in this embodiment, the aspirator 30 communicates with a portion of the second air passage 10 on the downstream side of the heater core 14, so that the air conditioned by the heater core 14 comfortably blows out from the aspirator 30. As a result, discomfort of the occupant can be further reduced. Also, if
If the wind of the aspirator is cool air from the outside air, the aspirator must be attached so that the blown air does not hit the occupant in the passenger compartment. The degree of freedom in mounting, such as the blowing direction, increases.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an overall configuration of a vehicle air conditioner according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a vehicle mounted state of the vehicle air conditioner of FIG. 1;

FIG. 3 is an explanatory diagram showing an enlarged configuration of the aspirator in the embodiment.

FIG. 4 is an explanatory diagram showing the overall configuration of a vehicle air conditioner according to the prior application.

[Explanation of symbols]

2 1st inside air introduction port, 3 2nd inside air introduction port, 4 ... outside air introduction port, 5 ... 1st inside / outside air switching door, 6 ... 2nd inside / outside air switching door, 9 ... 1st air passage, 10 ... 1st 2 air passage, 14 ... heater core, 16 ... defroster opening, 22 ... foot opening, 30 ... aspirator, 40 ... hose, 50 ... inside air sensor.

Claims (3)

[Claims] 1. Inside / outside air switching means (2-6) capable of selecting an inside / outside air two-layer flow mode in which both of the inside air and outside air are separately suctioned as an air-conditioning air suction mode; (2) a heating heat exchanger (14) for heating the conditioned air sucked through the air conditioner; and (2) a defroster opening for blowing the conditioned air passing through the heating heat exchanger (14) toward the inner surface of the vehicle window glass. (1
6) and a foot opening (22) for blowing the conditioned air that has passed through the heating heat exchanger (14) toward the feet of the passengers in the vehicle compartment.
A first air passageway (9) through which the outside air flows from the inside / outside air switching means (2-6) toward the defroster opening (16); and a first air passageway (9). A vehicle air conditioner comprising: a second air passage (10) through which the inside air flows from the inside / outside air switching means (2 to 6) toward the foot opening (22); and a communication with the second air passage (10). An aspirator (30) that generates a negative pressure by the inside air leaking from the second air passage (10); and a hose (10) connected to the aspirator (30) and sucking vehicle interior air by the negative pressure ( 40), and a temperature sensor (50) provided in the hose (40) for detecting the temperature of the sucked vehicle interior air. 2. A heating heat exchanger (1) for heating conditioned air.
4) and a defroster opening (1) for blowing the conditioned air that has passed through the heating heat exchanger (14) toward the inner surface of the vehicle window glass.
6), and a foot opening (22) that blows out the conditioned air that has passed through the heating heat exchanger (14) toward the feet of the occupant in the passenger compartment, wherein the defroster opening (16) and the foot opening (2
2) In the blowing mode in which both are simultaneously opened, at least the air-conditioned air passage is divided into a first air passage (9) through which outside air flows and a second air passage (10) through which inside air flows, An air conditioner for a vehicle, wherein the first air passage (9) communicates with a defroster opening (16) and the second air passage (10) communicates with the foot opening (22). The vessel (14) is formed so as to extend over both the first and second air passages (9, 10), is provided in communication with the second air passage (10), and is provided with the second air passage. An aspirator (30) for generating a negative pressure by the inside air leaking from (10); a hose (40) connected to the aspirator (30) for suctioning vehicle interior air by the negative pressure; Set in It is the suction temperature sensor (50) for detecting the temperature of the room air has a vehicle air-conditioning system, characterized in that it comprises a. 3. The aspirator (30) further includes a second aspirator (30).
The heating heat exchanger (14) in an air passage (10);
The vehicle air conditioner according to claim 1, wherein the air conditioner communicates with a portion of the vehicle downstream of the air.