JP2001026209A - Automobile air conditioning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To equalize distribution of wind speed of air passing through a cooling heat exchanger while securing reduction effect of air conditioner unit part arrangement space. SOLUTION: An evaporater 23 to cool air conditioning air is arranged in an approximately horizontal direction and a blower 25 is arranged downstream of the evaporater 23 in an air flow direction. A vertical dimension of an air conditioner unit part is reduced and an arrangement space reduction effect is secured because of approximately horizontal arrangement of the evaporater 23. Moreover, uneven dynamic pressure of air flow at a direction change part like in the case of a push-in fan does not directly act on the evaporater 23 and distribution of wind speed of air passing through the evaporater 23 can be equalized because the blower 25 acts as a suction fan against the evaporater 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for a vehicle in which a blower is arranged downstream of an air flow of a cooling heat exchanger arranged in a substantially horizontal direction, and relates to a one-box type recreational vehicle (RV). And the like, and is suitably applied to a rear seat air-conditioning unit that air-conditions a rear seat-side area in a vehicle cabin.

[0002]

2. Description of the Related Art Conventionally, Japanese Unexamined Patent Publication No. 9-123748 discloses a vehicle air conditioner in which a cooling heat exchanger (evaporator) is arranged in a substantially horizontal direction to reduce an arrangement space of an air conditioning unit. A device has been proposed.

[0003] In the above-mentioned prior art, since the blower is disposed on the upstream side of the air flow of the cooling heat exchanger, the blower is of a push type with respect to the cooling heat exchanger, and the cooling heat exchanger is connected to the cooling heat exchanger. The blower is offset to the side of the built-in air conditioning unit, and the blown air of the blower passes through the core of the cooling heat exchanger from below to above.

[0004]

In the above-mentioned prior art, the flow direction of the air blown from the blower is largely changed upward at a lower portion of the cooling heat exchanger at right angles. The dynamic pressure of the flow acts unevenly on the cooling heat exchanger, causing a large variation in the wind speed of the air passing through the cooling heat exchanger. That is, the wind speed on the outside of the air flow conversion portion becomes larger than the wind speed on the inside.

[0005] In view of the above, an object of the present invention is to make uniform the wind speed distribution of the air passing through the cooling heat exchanger while securing the effect of reducing the space for arranging the air conditioning unit.

[0006]

According to the first aspect of the present invention, there is provided a cooling heat exchanger (2).
3) is arranged in a substantially horizontal direction, and the blower (25)
Is arranged on the downstream side of the air flow of the cooling heat exchanger (23).

According to this, by arranging the cooling heat exchanger (23) in a substantially horizontal direction, the vertical dimension of the air conditioning unit can be reduced, and the effect of reducing the arrangement space can be secured. In addition, the blower (25) serves as a cooling heat exchanger (2).
Since it acts as a suction fan with respect to 3), the uneven dynamic pressure of the air flow in the direction change portion does not directly act on the cooling heat exchanger (23) as in the case of the pushing fan. Therefore, the wind speed distribution of the air passing through the cooling heat exchanger can be made uniform, and the performance of the cooling heat exchanger can be improved.

Further, since the cooling heat exchanger (23) is disposed upstream of the air flow of the blower (25), the operating noise of the blower (25) tends to propagate to the room through the suction side passage. In doing so, the cooling heat exchanger (23) acts as a resistor that reduces the propagation of operating noise, so that noise propagation can be reduced.

If the blower (25) is arranged above the cooling heat exchanger (23), the cooling heat exchanger (23) is moved from below to above. Flows, and the condensed water generated in the cooling heat exchanger (23) falls downward due to gravity. Therefore, the condensed water is blown (2
5), and condensed water is less likely to scatter to the air outlet side (upper side) of the cooling heat exchanger (23).

In the invention according to claim 3, the blower (2
5) A centrifugal fan (26) and a scroll casing (28) incorporating the centrifugal fan (26).
And positioning the air outlet of the cooling heat exchanger (23) on the side where the winding angle from the nose (33), which is the winding start of the scroll casing (28), is within 180 °. Features.

In the centrifugal blower (25), the winding angle from the nose portion (33) of the scroll casing (28) is one.
Since it has a characteristic that air is easily sucked in on the side within 80 °, the air from the air outlet of the cooling heat exchanger (23) can be smoothly sucked into the centrifugal fan (26). And the blowing performance can be improved.

According to a fourth aspect of the present invention, the heating heat exchanger (36) is arranged in a direction substantially perpendicular to the air flow from the outlet side passage (34) of the scroll casing (28). I have.

[0013] Thus, the air flow from the outlet side passage (34) can be made to flow into the heat exchange section of the heating heat exchanger (36) almost linearly with almost no bending.

Therefore, even if the blower (25) is a push-in fan for the heating heat exchanger (36), the dynamic pressure of the air flowing into the heat exchanger of the heating heat exchanger (36) is made uniform. In addition, the wind speed distribution of the air passing through the heating heat exchanger (36) can be made uniform, and the heat exchange performance of the heating heat exchanger (36) can be improved.

According to a fifth aspect of the present invention, the heat exchanger for heating (36) is disposed substantially perpendicularly upward from one end of the heat exchanger for cooling (23).

Thus, the blower (25) can be arranged by utilizing the space formed above the cooling heat exchanger (23) and on the front side of the heating heat exchanger (36). Therefore, the cooling heat exchanger (23) and the heating heat exchanger (3) are not increased without increasing the vertical dimension of the air conditioning unit.
6) and the blower (25) can be compactly arranged.

According to a sixth aspect of the present invention, the vehicle air conditioner according to any one of the first to fifth aspects is configured to air-condition a region on the rear seat side in the vehicle compartment.

In the rear-seat air conditioner for air-conditioning the rear-seat side area of the passenger compartment, the length of the blow-out duct (41, 44) is much longer than that of the front-seat air conditioner. The operating noise can be sufficiently attenuated in the blow ducts (41, 44), which is advantageous for reducing the blowing noise to the room.

Note that the reference numerals in parentheses of the above means indicate the correspondence with specific means described in the embodiments described later.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) FIG. 1 shows an overall layout of a first embodiment in which the present invention is applied to a one-box type RV vehicle. Front seat air conditioning unit 10
Is disposed inside the instrument panel 11 at the forefront in the vehicle interior, and air-conditions the area on the front seat side in the vehicle interior.

The front seat air conditioning unit 10 includes a ventilation unit having an inside / outside air switching box for switching and introducing inside air and outside air and a centrifugal ventilation fan, and an evaporator of a refrigeration cycle for absorbing heat from the conditioned air to evaporate the refrigerant. (Heat exchanger for cooling) and an air conditioning unit having a heater core (heat exchanger for heating) for heating the conditioned air with hot water from the vehicle engine.

Next, the rear air conditioning unit 12 is disposed on the rear seat (second and third seats) side of the passenger compartment and air-conditions the rear seat area. Next, the installation location of the rear air conditioning unit 12 in this example will be described. As shown in FIG. 1, the rear seat is located at a position behind the rear wheel accommodating portion (tire house) 14 for accommodating the rear wheel 13 of the vehicle. The side air conditioning unit 12 is provided.

FIG. 2 is a sectional view showing the arrangement of the rear seat air conditioning unit 12 in detail. FIG. 1 shows a case where the rear seat air conditioning unit 12 is arranged on the left side of the vehicle rear seat.
In FIG. 2, the rear air conditioning unit 12 is provided on the right side of the rear seat side of the vehicle.
Is shown. Rear seat air conditioning unit 12
As shown in FIG. 2, the outer plate 15 and the inner plate 1
6 is accommodated in the side space.

Next, the specific structure of the rear air conditioning unit 12 according to the present embodiment will be described in detail with reference to FIGS. 3 and 4 show the rear seat air conditioning unit 12.
FIG. 5 is a cross-sectional view in the vehicle left-right direction.

The rear seat air-conditioning unit 12 has an air-conditioning case 17 formed of a resin material (for example, polypropylene). The air-conditioning case 17 is formed by integrally fastening a plurality of divided cases. In addition, a passage for conditioned air is formed therein.

The rear air conditioning unit 12 (air conditioning case 1)
As shown in FIG. 2, the overall shape of 7) is such that the vehicle can be accommodated in the side space between the outer plate 15 and the inner plate 16 in the left and right direction (width).
It has a vertically long thin shape with a small dimension in the direction and a large dimension in the vertical direction of the vehicle.

An air inlet 18 is provided in a lower part of the air-conditioning case 17 on the indoor side (the inner plate 16 side).
The air intake port 18 is rectangular as shown in FIGS. 2 and 3 and communicates with the rear part of the passenger compartment through an opening (not shown) of the inner plate 16. An air purifying filter 19 is disposed at the air inlet 18.

The filter 19 is provided for dust removal for removing dust in the air or for deodorization for removing malodorous components in the air, and includes a filter paper filter for dust removal, an activated carbon filter for deodorization and the like. Also, the filter 19
Is also rectangular along the air inlet 18.

In the air-conditioning case 17, the air inlet 18
Immediately above, a filter bypass air intake port 20 is formed to extend in the vehicle front-rear direction. The filter bypass air suction port 20 also communicates with the rear part of the vehicle compartment through an opening (not shown) of the inner plate 16.

A plate-shaped filter bypass door 21 conforming to the shape of the filter bypass air suction port 20 is disposed inside the air conditioning case 17 so as to be rotatable by a rotation shaft 22. The suction port 20 is opened and closed. As shown in FIG. 5, the air suction port 18 and the filter bypass air suction port 20 are open to a lower space 24 of an evaporator (cooling heat exchanger) 23.

The evaporator 23 cools the air by evaporating the refrigerant decompressed by a temperature type expansion valve (decompression means) not shown and branched from the refrigerating cycle of the front seat air conditioning unit 10. Reference numeral 23 denotes a substantially rectangular thin shape, which is arranged in a substantially horizontal direction. However, in this example, in order to improve the discharge of condensed water generated in the evaporator 23,
As shown in FIG. 4, the evaporator 23 is arranged to be inclined at a slight angle θ (for example, about 20 °) from the horizontal in the vehicle front-rear direction.

As a result, the condensed water in the evaporator 23 is collected along the inclination of the evaporator 23 at the lower end of the slope on the front side of the vehicle, and the condensed water is dropped from the lower end of the air conditioning case 17 to the lower side. The water can be satisfactorily discharged to the outside from a drain port 17a (FIG. 4) disposed at the lowermost part of the air conditioning case 17.

The evaporator 23 may have a well-known structure having a heat exchange section in which a number of flat tubes and corrugated heat transfer fins are alternately stacked in parallel. The flat tube of the evaporator 23 is disposed so as to extend in the vehicle front-rear direction (the left-right direction in FIG. 4).

An air blower 25 is disposed above the evaporator 23 at a position on the indoor side (the inner plate 16 side). The blower 25 includes a blower fan 26 composed of a centrifugal multi-blade fan (sirocco fan) and a fan drive motor 2.
7 and a scroll casing 28. The motor 27 is held and fixed to the scroll casing 28 via a stay (not shown).

Here, the rotating shaft 29 of the blower fan 26 is arranged so as to face the left and right direction of the vehicle, and the suction port 30 of the scroll casing 28 is opened at a substantially middle portion of the air conditioning case 17 in the left and right direction of the vehicle. A communication space 31 that connects the upper side (air outlet side) of the evaporator 23 and the suction port 30 is formed in the air-conditioning case 17 at a side portion (right side portion in this example) of the suction port 30.

In FIG. 4, a line 32 indicates a range in which the winding angle is within 180 ° from the center of the nose portion 33 which is the winding start portion of the scroll casing 28.
The arrangement direction of the scroll casing 28 is set such that the portion at 180 ° is located on the lower side, and the outlet side passage 34 of the scroll casing 28 is located on the upper side.

Therefore, the air outlet of the evaporator 23 is located on the side where the above-mentioned winding angle ≦ 180 °,
Air from the air outlet of the air inlet 3
Of the zeros, the air is smoothly inhaled mainly from the nose portion 33 within a winding angle of 180 ° or less.

As shown in FIG. 4, the outlet side passage 34 of the scroll casing 28 extends from the front side of the vehicle toward the rear side of the vehicle, and the outlet space 35 of the outlet side passage 34 extends in the vertical direction of the vehicle. The air-conditioning case 17 is also expanded to the entire length in the vehicle left-right direction in the vehicle left-right direction while being expanded downward.

A heater core (heating heat exchanger) 36 is provided in the outlet space 35 of the outlet side passage 34. The heater core 36 heats the air with hot water from a vehicle engine (not shown), and is disposed substantially vertically in a portion on the vehicle rear side of the evaporator 23. The heater core 36 may have a well-known configuration having a heat exchanging section in which flat tubes through which hot water flows and corrugated heat transfer fins are alternately stacked in parallel. The flat tube of the heater core 36 is disposed so as to extend in the vehicle vertical direction.

Due to the arrangement of the heater core 36 described above, the heater core 36 is arranged in a direction substantially orthogonal to the air flow from the outlet side passage 34 of the scroll casing 28, and upward from the vehicle rear end of the evaporator 23. The heater cores 36 are arranged substantially at right angles.

Therefore, above the evaporator 23 and
By utilizing the space formed on the vehicle front side of the heater core 36, the blower 25 can be arranged without increasing the vertical dimension of the air conditioning case 17 in the vehicle.

A hot water flow control valve 38 is disposed in the middle of a hot water pipe 37 for circulating hot water to the heater core 36 as a means for adjusting the temperature of the blown air. This flow control valve 38 changes the opening degree of the hot water
The amount of heated air in the heater core 36 is adjusted by adjusting the flow rate of hot water to the heater core 36. The hot water flow control valve 38 is disposed above the air-conditioning case 17 at a position on the vehicle front side.

A face blow-out opening 39 for blowing air toward the head of the rear-seat occupant is formed in a portion of the upper surface of the air-conditioning case 17 on the rear side of the vehicle. Further, at a position on the vehicle rear side from the lower end of the heater core 36,
A foot outlet 40 for blowing air toward the feet of the rear passenger is formed.

FIGS. 1 to 3 show the face blowout opening 39.
Is connected to one end (lower end) of the face duct 41, and the other end of the face duct 41 rises to the ceiling. And on the ceiling, the vehicle left and right (width)
A ceiling outlet duct portion 42 extending in the direction is formed, and a plurality of face outlets 43 are formed in the ceiling outlet duct portion 42 to blow air toward the rear side of the vehicle toward the head of the rear passenger.

Further, one end (upper end) of a foot duct 44 is connected to the foot blowing opening 40, and this foot duct 44 is, as shown in FIG. In this example, after hanging down along the right side of the vehicle), the vehicle is bent toward the indoor side along the bottom surface of the air conditioning case 17. Further, the foot duct 44 extends from the bottom surface of the air-conditioning case 17 to the front side of the vehicle as shown in FIG.

A foot outlet duct 45 extending in the left-right (width) direction of the vehicle on the floor of the vehicle is formed at the tip of the foot duct 44, and air is blown through the foot outlet duct 45 toward the rear passenger foot. A plurality of foot outlets 46 for blowing out are formed. The foot outlet 46 blows air in both directions of the front and rear of the vehicle.

In the air-conditioning case 17, a cool air bypass 47 that bypasses the heater core 36 is provided above the heater core 36. The cool air bypass passage 47 is formed so as to be directly connected to the face blowing opening 39. This cool air bypass passage 47 is opened and closed by a cool air bypass door 48. This door 48 has a rotating shaft 4
4 is a plate door that rotates between a fully open position indicated by a solid line in FIG. 4 and a fully closed position indicated by a dashed line in FIG.

In the air conditioning case 17, the heater core 3
A blowout mode switching door (blowout mode switching means) 50 is disposed at the rear side of the vehicle. The outlet mode switching door 50 has a bent shape in a U-shape, and has a rotating shaft 51.
It consists of a plate door that rotates around the center.

The solid line position in FIG. 4 of the blow mode switching door 50 is a face mode position in which the face blow opening 39 is fully opened and the foot blow opening 40 is fully closed.
4 is a foot mode position in which the face blowout opening 39 is fully closed and the foot blowout opening 40 is fully opened. Further, when the blowout mode switching door 50 is operated at an intermediate position between the solid line position and the alternate long and short dash line position in FIG. 4, a bilevel mode in which both the face blowout opening 39 and the foot blowout opening 40 are simultaneously opened can be set.

Next, the operation of this embodiment in the above configuration will be described. In the rear-seat air conditioning unit 12, when the motor 27 of the blower 25 is energized to operate the blower fan 26, the air inside the vehicle (inside air) passes through the air inlet 18 through the filter 19 for purifying the air to the lower side of the evaporator 23. Space 24
Inhaled. Here, when the air-conditioning control is in a steady state, the filter bypass air intake port 20 is a plate-shaped filter bypass door 2.
1, the intake air passes through the filter 19 and is cleaned.

At the time of air-conditioning control transition such as at the time of cooling down immediately after the start of cooling or at the time of warm-up immediately after the start of heating, when the filter bypass air intake port 20 is opened by the plate-shaped filter bypass door 21, the air intake port 18 and the filter are removed. Since the inside air can be sucked from both the bypass air suction ports 20, the air conditioning performance can be improved by increasing the air volume.

The air sucked into the lower space 24 is supplied to the evaporator 2
3 is cooled to become cool air, which passes through the scroll casing 28 of the blower 25 and flows toward the heater core 36, and then cools through the heater core 36 and is heated to a predetermined temperature desired by the occupant. Becomes Here, by adjusting the flow rate of the hot water flowing into the heater core 36 by the flow control valve 38, the temperature of the air blown into the vehicle interior can be continuously adjusted.

When the blowout mode switching door 50 is operated to the position indicated by the solid line in FIG. 4, the face blowout opening 39 is opened and the foot blowout opening 40 is closed, so that the face mode is set. Then, the conditioned air is blown out only from the face outlet 43 through the face outlet 41 through the face duct 41 toward the head side of the rear passenger. In the face mode, by operating the cool air bypass door 48 to the solid line position in FIG. 4 and opening the cool air bypass path 47 at the time of maximum cooling (cool down or the like), the pressure loss of the ventilation path can be reduced. And the cooling capacity can be improved.

Next, when the blow mode switching door 50 is rotated counterclockwise from the solid line position in FIG. 4 to the dashed line position in FIG. 4, the foot blow opening 40 is opened, and the face blow opening 40 is opened. The blowout opening 39 is closed. At this time, the cool air bypass door 47 is closed by the cool air bypass door 48. As a result, the foot mode is set, and the conditioned air is blown out only from the foot outlet 46 through the foot outlet 40 through the foot duct 44 toward the foot of the rear passenger.

Next, when the blow-out mode switching door 50 is operated to an intermediate position between the solid line position and the one-dot chain line position in FIG. 4, both the face blow-out opening 39 and the foot blow-out opening 40 are simultaneously opened substantially half-open. Then, the bi-level mode is set. Then, the conditioned air can be blown out of the face outlets 39 and the foot outlets 40 via the ducts 41 and 44 and the outlets 43 and 46 at the same time.

In the bi-level mode, the cool air bypass 47 may be closed by a cool air bypass door 48 or the cool air bypass 47 may be closed by the cool air bypass door 4.
8, the opening may be provided. In the latter case, the temperature of the face blown air can be made lower than the temperature of the foot blown air to create a cold head foot type blowout temperature distribution.

According to the first embodiment, since the evaporator 23 and the filter 23 are arranged on the upstream side of the air flow of the blower 25, the operating noise of the blower 25 passes through the suction side passage to the room. When trying to propagate,
The evaporator 23 and the filter 23 function as a resistor for reducing the operation noise propagation.

Also, in the outlet passage of the blower 25, the heater core 36 acts as a resistor for reducing the transmission of operating noise to the room, and the rear air conditioning unit 1
2, the length of the face duct 41 and the length of the foot duct 44 are significantly longer than those of the front air conditioning unit 10, so that
Propagation of the blowing operation noise from the outlet side passage of the blower 25 into the room can also be reduced favorably.

Since the blower 25 is arranged downstream of the air flow of the evaporator 23 and the blower 25 is configured as a suction fan for the evaporator 23, the suction air flow flows through the evaporator 23. . And evaporator 2
In the lower space 24, which is the suction side space of No. 3, it is made uniform at a pressure relatively close to the atmospheric pressure. That is, the lower space 2
4 functions as a surge tank for pressure equalization.

For this reason, as in the case of the push-in fan, the unevenness of the dynamic pressure of the airflow blown out of the direction change portion is caused by the evaporator 23.
Does not act as it is. Therefore, according to the first embodiment, as compared with the case of the push-in fan, the evaporator 2
3, the wind speed distribution of the passing air can be made uniform, and the heat exchange performance of the evaporator 23 can be improved.

On the other hand, the heat exchanging portion of the heater core 36 is disposed in a direction (vertical direction of the vehicle) substantially perpendicular to the direction of air flow (the longitudinal direction of the vehicle) from the outlet side passage 34 of the scroll casing 28 of the blower 25. , Outlet side passage 34
Can flow into the heat exchange portion of the heater core 36 substantially linearly with almost no bending.

For this reason, even if the blower 25 is a pushing fan for the heater core 36, the dynamic pressure of the air flowing into the heat exchange section of the heater core 36 is made uniform, and the heater core 3
6 can make the wind speed distribution of the passing air uniform, and the heater core 36
Can improve the heat exchange performance.

(Second Embodiment) In the first embodiment described above, as shown in FIG.
6, a single suction fan that sucks air only from the suction port 30 on one side in the axial direction is configured. However, in the second embodiment,
As shown in FIG. 6, suction ports 30 and 30a are provided on both sides in the axial direction of the blower fan 26, and communication spaces 31 and 31a are respectively formed in the air-conditioning case 1 corresponding to the suction ports 30 and 30a.
7.

According to the second embodiment, since the air at the outlet of the evaporator 23 is sucked in from both axial directions of the blower 25, the wind speed distribution of the air passing through the evaporator 23 can be further uniformized.

(Third Embodiment) In the first embodiment, the evaporator 23 is arranged parallel to the axial direction of the rotating shaft 29 of the blower 25 as shown in FIG. 5, but in the third embodiment, As shown in FIG. 7, the evaporator 23 is inclined.

That is, the intake air from the two intake ports 18 and 21 passes through the evaporator 23 and flows obliquely upward to the right toward the communication space 31.
The evaporator 23 is arranged obliquely downward and to the right so that 3 is located in the orthogonal direction. Thereby, the wind speed distribution of the air passing through the evaporator 23 can be made more uniform.

Fourth Embodiment Although the first to third embodiments all relate to the rear air conditioning unit 12, the present invention is applied to the front air conditioning unit 10 in the fourth embodiment. It was done.

FIGS. 8 and 9 show a fourth embodiment, in which the same or equivalent parts as those in the first to third embodiments are denoted by the same reference numerals and description thereof is omitted. Since the front seat side air conditioning unit 10 is provided, in addition to the face blowout opening 39A and the foot blowout opening 40A, a defroster blowout opening 50A is provided as a blowout opening.
0A, 50A are blow mode switching doors 39B, 40B, 5
It is designed to be opened and closed by 0B.

On the other hand, the lower space 24 of the evaporator 23 is connected to an inside / outside air switching box 53 through a communication duct 52 as shown in FIG. The lower space 23 is sucked into the lower space 24.

The other points of the fourth embodiment may be the same as those of the first to third embodiments, and the same functions and effects as those of the first to third embodiments can be exhibited.

(Other Embodiments) In the first to fourth embodiments, the hot water flow rate to the heater core 36 is used as a means for adjusting the temperature of the blown air in the front seat air conditioning unit 10 and the rear seat air conditioning unit 12. However, instead of the hot water flow control valve 38, an air mix door that adjusts the flow rate of hot air passing through the heater core 36 and cold air that bypasses the heater core 36 is used. It may be used to adjust the outlet air temperature.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of an entire vehicle showing a vehicle mounted state according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view in the vehicle left-right direction showing an outline of a rear-seat air conditioning unit in FIG. 1;

FIG. 3 is a cross-sectional view in the vehicle front-rear direction showing an outline of a rear seat air conditioning unit in FIG. 1;

FIG. 4 is an enlarged sectional view of FIG. 3;

FIG. 5 is a cross-sectional view in the vehicle left-right direction showing an arrangement relationship between a blower and an evaporator in FIG.

FIG. 6 is a cross-sectional view in a vehicle left-right direction showing an arrangement relationship between a blower and an evaporator according to a second embodiment.

FIG. 7 is a cross-sectional view in a vehicle left-right direction showing an arrangement relationship between a blower and an evaporator according to a third embodiment.

FIG. 8 is a cross-sectional view in the vehicle front-rear direction showing an outline of a front seat side air conditioning unit according to a fourth embodiment.

FIG. 9 is a sectional view taken along line AA of FIG. 8;

[Explanation of symbols]

10 front air conditioning unit, 12 rear air conditioning unit, 23 evaporator, 25 blower, 26 fan
28: scroll casing, 36: heater core, 38
... hot water flow control valve, 39 ... face blowing opening, 40
... Fout opening for foot.

Claims (6)

[Claims] A cooling heat exchanger (2) for cooling conditioned air.
A blower (25) for arranging 3) in a substantially horizontal direction and for blowing air to the cooling heat exchanger (23);
Is disposed on the downstream side of the air flow of the cooling heat exchanger (23). 2. The air conditioner for a vehicle according to claim 1, wherein the blower (25) is arranged above the cooling heat exchanger (23). 3. The blower (25) has a centrifugal blower fan (26) and a scroll casing (28) containing the centrifugal blower fan (26). The scroll casing (28) The air outlet of the cooling heat exchanger (23) is located on the side where the winding angle from the nose (33), which is the winding start part, is within 180 °. Or the vehicle air conditioner according to 2. 4. The blower (25) has a centrifugal blower fan (26) and a scroll casing (28) containing the centrifugal blower fan (26), and heats the conditioned air. The vehicle heat exchanger according to claim 1 or 2, wherein the heat exchanger (36) is arranged in a direction substantially orthogonal to the air flow from the outlet passage (34) of the scroll casing (28). Air conditioner. 5. The heating heat exchanger (36) is disposed substantially perpendicularly upward from one end of the cooling heat exchanger (23). Vehicle air conditioner. 6. The air conditioner for a vehicle according to claim 1, wherein the air conditioner is configured to air-condition a region on a rear seat side in a vehicle compartment.