WO2015151475A1

WO2015151475A1 - Vehicle air conditioner

Info

Publication number: WO2015151475A1
Application number: PCT/JP2015/001737
Authority: WO
Inventors: 俊輔石黒; 康裕関戸; 加藤　慎也
Original assignee: 株式会社デンソー
Priority date: 2014-04-01
Filing date: 2015-03-26
Publication date: 2015-10-08
Also published as: JP6213350B2; JP2015196452A

Abstract

This vehicle air conditioner (10) is provided with: a heat exchanging unit (20) including a heat exchanger case (21) through which air is passed, and heat exchangers (42, 44) which are arranged inside the heat exchanger case and exchange heat with the air; and a blower unit (30) including a blower case (60) which includes openings (64a-64e) that blow air blown from the heat exchanger case into a vehicle interior, and fans (80a, 80b) which are arranged inside the blower case and rotate to blow the air flow blown from the heat exchanger case from the blowing openings to the vehicle interior. The blower case is supported by beam members (4,5) that are extended in the vehicle width direction and both length-direction end sides of which are fixed to a vehicle chassis (6a, 6b). The center part (S2) of the blower case in the vehicle width direction is offset from the center part (S1) of the beam members in the vehicle width direction.

Description

Air conditioner for vehicles

Cross-reference of related applications

This application is based on Japanese Patent Application No. 2014-075387 filed on April 1, 2014, the disclosure of which is incorporated herein by reference.

This disclosure relates to a vehicle air conditioner.

2. Description of the Related Art Conventionally, an indoor air conditioning unit of a vehicle air conditioner includes a blower unit and a heater unit that adjusts the temperature of air blown from the blower unit toward the vehicle interior, and the heater unit and the blower unit are supported by a steering member. (For example, Patent Document 1).

Generally, the steering member is a beam member extending in the vehicle width direction, and both longitudinal ends thereof are fixed to the vehicle chassis.

JP 2000-355210 A

The inventors of the present disclosure have studied a suction-type indoor air conditioning unit in which a blower unit is disposed downstream of the heater unit in order to reduce the size of the indoor air conditioning unit.

According to the examination, in the suction-type indoor air-conditioning unit 10a of FIG. 10, if the weight balance in the rotation direction of the fans constituting the blower unit 30a is unbalanced, the blower unit 30a is moved along with the rotation of the fan. Vibration occurs. For this reason, when the blower unit 30a is supported at the center of the steering member 5a in the vehicle width direction, when vibration is transmitted from the blower unit 30a to the steering member 5a, the steering member 5a vibrates and the vibration is amplified. The Accordingly, the vibration of the steering member 5a is transmitted to the steering 7 and the instrument panel 3, and the steering 7 and the instrument panel 3 may be shaken to give the passenger a sense of incongruity.

In view of the above points, it is an object of the present disclosure to provide a vehicle air conditioner that reduces vibrations in a passenger compartment.

A vehicle air conditioner of the present disclosure includes a heat exchange case that circulates air, a heat exchange unit that is disposed in the heat exchange case and exchanges heat with air, and is blown out of the heat exchange case. A blower case having an opening that blows air into the vehicle interior, and a blower unit that is disposed in the blower case and has a fan that blows air blown from the heat exchange case into the vehicle interior from the opening as it rotates. Is provided. The blower case is formed so as to extend in the vehicle width direction, and is supported by beam members that are fixed to the vehicle chassis at both ends in the longitudinal direction. The central part of the blower case in the vehicle width direction is offset from the central part of the beam member in the vehicle width direction.

In the vehicle air conditioner of the present disclosure, the central portion of the blower case in the vehicle width direction is offset from the central portion of the beam member in the vehicle width direction. For this reason, the blower case is attached to a portion where the vibration amplitude of the beam member is smaller than that of the central portion of the beam member in the vehicle width direction. Therefore, it is possible to suppress the vibration of the beam member due to the vibration of the fan, so that the vibration in the passenger compartment can be reduced.

It is a figure which shows the figure which mounted the air conditioning unit of the vehicle air conditioner in 1st Embodiment in the vehicle. It is a schematic diagram which shows schematic internal structure of the vehicle air conditioner of FIG. FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2. FIG. 4 is a sectional view taken along line IV-IV in FIG. 2. It is sectional drawing of the blower unit in a comparative example. It is the figure which expanded the air-conditioning unit periphery of FIG. It is the figure which expanded the air-conditioning unit periphery in a comparative example. It is a figure which shows the figure which mounted the air conditioning unit of the vehicle air conditioner in 2nd Embodiment in the vehicle. It is a figure which shows the figure which mounted the air conditioning unit of the vehicle air conditioner in the modification in the vehicle. It is a figure which shows the figure which mounted the air conditioning unit of the vehicle air conditioner in a comparative example in the vehicle.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In the following embodiments, parts that are the same or equivalent to each other are given the same reference numerals in the drawings in order to simplify the description.
(First embodiment)
1 and 2 are sectional views of an air conditioning unit of the vehicle air conditioner according to the first embodiment. In FIG. 1 and FIG. 2, the front, rear, left, right, upper, and lower arrows indicate directions when the vehicle air conditioner is mounted on a vehicle. In this embodiment, the air conditioning unit 10 is mounted on a vehicle in which the right front seat 1a is a driver seat (Dr) and the left front seat 1b is a passenger seat (Pa).

The air conditioning unit 10 according to the present embodiment is a two-layer air-conditioning unit that includes a heater unit 20 and a blower unit 30. The blower unit 30 is disposed offset from the central part in the vehicle width direction (left-right direction) to the right side (that is, the driver seat side) in the lower part of the instrument panel 3 in the vehicle interior 2. The heater unit 20 is disposed offset from the vehicle central portion S1a in the left-right direction to the left side (that is, the passenger seat side) in the lower portion of the instrument panel 3 in the vehicle interior 2.

The heater unit 20 in FIG. 2 includes a heater case (heat exchange case) 21. The heater case 21 is made of a resin molded product, such as polypropylene, which has some elasticity and is excellent in strength. The heater case 21 is located on the vehicle rear side (that is, the vehicle interior 2) with respect to the firewall 4. The firewall 4 is a metal wall that is disposed in front of the vehicle interior 2 and isolates the interior of the vehicle interior 2 from the exterior of the vehicle interior. The firewall 4 extends in the vehicle width direction. The right side of the firewall 4 in the vehicle width direction is fixed to the chassis 6a, and the left side of the firewall 4 in the vehicle width direction is fixed to the chassis 6b. The heater case 21 is supported by a reinforcing member (phosphorus hose) 5 as a beam member. The reinforcing member 5 is a metal beam member and extends in the vehicle width direction to reinforce the vehicle chassis (framework) 6a and 6b. The reinforcing member 5 is disposed in the lower part of the instrument panel 3. The reinforcing member 5 is fixed to the chassis 6a at the right end in the longitudinal direction. The left end side in the longitudinal direction of the reinforcing member 5 is fixed to the chassis 6b.

The heater case 21 includes a resin wall 23 as a partition wall that partitions the upper air passage 22a and the lower air passage 22b. The upper air passage 22a and the lower air passage 22b distribute the air introduced from the outside air introduction port 24a and the inside air introduction port 24b toward the vehicle interior 2. The outside air introduction port 24 a and the inside air introduction port 24 b are formed in the heater case 21. The outside air introduction port 24a introduces outside air (air outside the passenger compartment) into the

air passages

22a and 22b. The inside air introduction port 24b introduces inside air (air in the passenger compartment) into the

air passages

22a and 22b. The

air passages

22a and 22b collectively refer to the upper air passage 22a and the lower air passage 22b.

The heater unit 20 includes an inside / outside air switching door 25 that opens at least one of the outside air introduction port 24a and the inside air introduction port 24b. The inside / outside air switching door 25 is driven by an actuator (not shown). Further, the heater unit 20 includes an inside / outside air guide 26. The inside / outside air guide 26 guides outside air introduced from the outside air introduction port 24a to the upper air passage 22a in a state where the outside air introduction port 24a and the inside air introduction port 24b are opened by the inside / outside air switching door 25. The inside / outside air guide 26 guides the inside air introduced from the inside air introduction port 24b to the lower air passage 22b.

The heater unit 20 includes a filter 40, a cooling heat exchanger 42, a heater core 44, and

air mix doors

48a and 48b.

The filter 40 is disposed in the heater case 21 so as to straddle the upper air passage 22a and the lower air passage 22b. The filter 40 filters air introduced from the

inlets

24a and 24b and flowing through the upper air passage 22a, and air introduced from the

inlets

24a and 24b and flowing through the lower air passage 22b.

The cooling heat exchanger 42 is disposed in the heater case 21 so as to straddle the upper air passage 22a and the lower air passage 22b. The cooling heat exchanger 42 is disposed downstream of the filter 40 in the air flow direction. The cooling heat exchanger 42 absorbs the latent heat of vaporization of the refrigerant in the well-known refrigeration cycle from the air that has passed through the filter 40 and cools this air. That is, the cooling heat exchanger 42 cools the air for each air passage by heat exchange between the air that has passed through the filter 40 and the refrigerant, and blows out cold air.

The heater core 44 is disposed in the heater case 21 on the downstream side in the air flow direction with respect to the cooling heat exchanger 42, and is disposed so as to straddle the upper air passage 22a and the lower air passage 22b. . The heater core 44 heats the cold air that has passed through the upper air passage 22a with engine cooling water (hot water). The heater core 44 heats the cold air by heat exchange between the cold air that has passed through the lower air passage 22b and the engine cooling water (hot water), and blows it out as hot air.

In the upper air passage 22a, a bypass passage 46a is formed in which the cool air from the cooling heat exchanger 42 flows through the heater core 44 toward the vehicle interior. In the lower air passage 22b, a bypass passage 46b is formed in which the cool air from the cooling heat exchanger 42 flows through the heater core 44 toward the vehicle interior.

The air mix door 48a is disposed in the upper air passage 22a, and changes the ratio of the amount of air flowing through the heater core 44 and the amount of air flowing through the bypass passage 46a out of the amount of air blown from the cooling heat exchanger 42. The air mix door 48b is disposed in the lower air passage 22b, and changes the ratio of the amount of air flowing through the heater core 44 and the amount of air flowing through the bypass passage 46b out of the amount of air blown from the cooling heat exchanger 42. In the present embodiment, as the

air mix doors

48a and 48b, slide doors that are supported with respect to the heater case 21 so as to be slidable are provided.

In the upper air passage 22a, an actuator 50a that outputs a driving force to the air mix door 48a and a power transmission mechanism 51a that transmits the drive output of the actuator 50a to the air mix door 48a are arranged. The actuator 50 a and the power transmission mechanism 51 a are disposed on the downstream side of the heater case 21 in the air flow direction with respect to the filter 40.

In the lower air passage 22b, an actuator 50b that outputs a driving force to the air mix door 48b and a power transmission mechanism 51b that transmits the drive output of the actuator 50b to the air mix door 48b are arranged. The actuator 50b and the power transmission mechanism 51b are disposed on the downstream side of the heater case 21 with respect to the filter 40 in the air flow direction.

In this embodiment, the

actuators

50a and 50b and the power transmission mechanisms 51a and 51b are supported by the heater case 21. As the

actuators

50a and 50b, electric motors such as servo motors are used. Each of the power transmission mechanisms 51a and 51b is constituted by a plurality of gears, rotating shafts, and the like, and is a link mechanism that transmits the drive output of the

actuators

50a and 50b to the air mix door 48b.

The heater case 21 is formed with an air outlet 28a of the upper air passage 22a and an air outlet 28b of the lower air passage 22b. The air outlet 28a is disposed downstream of the heater core 44 and the bypass passage 46a in the air flow direction. The air outlet 28b is disposed downstream of the heater core 44 and the bypass passage 46b in the air flow direction.

The blower unit 30 includes a blower case 60. The blower case 60 is located on the vehicle rear side (that is, the vehicle interior 2) with respect to the firewall 4. The blower case 60 is fixed to the reinforcing member 5. That is, the blower case 60 is supported by the reinforcing member 5. A central portion S2 (see FIG. 1) of the blower case 60 in the vehicle width direction (left-right direction) is disposed offset to the driver seat (vehicle right side) side with respect to the central portion S1 of the reinforcing member 5 in the vehicle width direction. Yes. In the present specification, for convenience of explanation, the central portion of the reinforcing member 5 in the vehicle width direction is S1 and the central portion of the vehicle in the left-right direction is S1a.

The blower case 60 is made of a resin-molded product, such as polypropylene, having a certain degree of elasticity and excellent strength. The blower case 60 includes a resin wall 62 as a partition wall that partitions the upper air passage 61a and the lower air passage 61b. The blower case 60 is provided with an air inlet 63a that guides air blown from the air outlet 28a of the heater case 21 into the upper air passage 61a. The blower case 60 is provided with an air inlet 63b that guides air blown from the air outlet 28b of the heater case 21 into the lower air passage 61b.

A duct 70 is arranged between the heater case 21 and the blower case 60. The duct 70 constitutes an air conditioning case together with the heater case 21 and the blower case 60, and is made of a resin molded product having some elasticity and excellent strength, such as polypropylene. The duct 70 includes a resin wall 72 that partitions the upper air passage 71a and the lower air passage 71b. The upper air passage 71a guides air blown from the air outlet 28a of the heater case 21 into the upper air passage 61a. The lower air passage 71b guides the air blown from the air outlet 28b of the heater case 21 into the lower air passage 61b.

In the duct 70 of the present embodiment, the area of the cross section orthogonal to the flow direction of the main flow in the air flow blown out from the heater case 21 decreases from the

air outlets

28a and 28b toward the

air inlets

63a and 63b. Thus, it is formed in a tapered shape. The main flow is a flow having a large air volume among a plurality of air flows blown from the heater case 21 to the blower case 60.

The blower unit 30 includes

fans

80a and 80b and a blower motor 82. The fan 80a is supported on one side (the upper side in FIG. 2) of the rotation shaft 81 in the axial direction. The fan 80b is supported on the other side (the lower side in FIG. 2) of the rotation shaft 81 in the axial direction.

The fan 80a is a centrifugal fan that sucks air in the upper air passage 61a from the other side in the axial direction of the rotary shaft 81 and blows it out radially. The fan 80b is a centrifugal fan that sucks air in the lower air passage 61b from one side in the axial direction of the rotating shaft 81 and blows it outward in the radial direction.

The rotary shaft 81 is arranged so as to penetrate the resin wall 62 and extend in the vertical direction (vertical direction). The rotating shaft 81 is arranged offset to the right side (that is, the driver's seat side) with respect to the center portion S1a of the vehicle in the left-right direction. The blower motor 82 is an electric motor that rotationally drives the

fans

80 a and 80 b via the rotation shaft 81. The blower motor 82 is disposed below the blower case 60.

As shown in FIG. 3, in the blower case 60, face openings (face outlet openings) 64 a and 64 b and defroster openings (defroster outlet openings) are arranged on the radially outer side of the fan 80 a that rotates about the rotation shaft 81. ) 64c is formed. The

face openings

64a and 64b are disposed adjacent to each other. The face opening 64a blows air toward the driver's upper body through the FACE duct 7a and the driver's seat-side face outlet 8a. The face opening 64b blows air toward the upper half of the passenger seat through the FACE duct 7b and the face outlet 8b on the passenger seat side. The defroster opening 64c blows out air toward the inner surface of the windshield in the vehicle compartment through a DEF duct and a defroster outlet that are not shown.

The face opening 64a is opened and closed by a mode door 84a. The face opening 64b is opened and closed by the mode door 84b. The defroster opening 64c is opened and closed by the mode door 84c.

As shown in FIG. In the blower case 60,

foot openings

64d and 64e are formed on the radially outer side of the fan 80b that rotates about the rotation shaft 81. The foot opening 64d blows air toward the driver's lower body through the FOOT duct 7d and the foot outlet 8d. The foot opening 64e blows air toward the lower half of the passenger seat through the FOOT duct 7e and the foot outlet 8e. The foot opening 64d is opened and closed by the mode door 84d. The foot opening 64e is opened and closed by the mode door 84e.

In addition, the butterfly door currently supported rotatably with respect to the blower case 60 is used as the

mode door

84a, 84b, 84c, 84d, 84e of this embodiment type | system | group.

In the blower case 60, there are an actuator 90a that outputs driving force to the

mode doors

84a, 84b, and 84c, and a power transmission mechanism (not shown) that transmits the driving output of the actuator 90a to the

mode doors

84a, 84b, and 84c. Has been placed. For this reason, by outputting the output of the actuator 90a to the mode door 84a through the power transmission mechanism, the

mode doors

84a, 84b, and 84c are independently rotated. The power transmission mechanism is a link mechanism including a plurality of gears, a rotating shaft, and the like.

In the blower case 60, an actuator 90b that outputs driving force to the

mode doors

84d and 84e, and a power transmission mechanism (not shown) that transmits the driving output of the actuator 90b to the

mode doors

84d and 84e are arranged. . Therefore, by outputting the output of the actuator 90a to the

mode doors

84d and 84e through the power transmission mechanism, the

mode doors

84d and 84e are independently rotated. The power transmission mechanism is a link mechanism including a plurality of gears, a rotating shaft, and the like.

Here, the

actuators

90a and 90b are arranged on the downstream side in the air flow direction with respect to the filter 40, and are located at the boundary between the upper air passage 61a and the lower air passage 61b.

In this embodiment, the

actuators

90a and 90b and the two power transmission mechanisms are supported by the blower case 60. An electric motor such as a servo motor is used as the

actuators

90a and 90b.

Next, the inside / outside air two-layer mode will be described as a specific example of the operation of the air conditioning unit 10 of the present embodiment.

First, the inside / outside air switching door 25 opens the outside air introduction port 24a and the inside air introduction port 24b. Then, the blower motor 82 rotates the

fans

80 a and 80 b via the rotation shaft 81. For this reason, in the heater case 21, the air introduced from the

inlets

24a and 24b flows toward the vehicle interior.

Accordingly, the outside air introduced from the outside air introduction port 24a is guided to the upper air passage 22a by the inside / outside air switching door 25 and the inside / outside air guide 26. The guided outside air passes through the filter 40 and then flows to the cooling heat exchanger 42. Thus, cold air is blown out from the cooling heat exchanger 42 in the upper air passage 22a.

Here, a part of the cold air blown out from the cooling heat exchanger 42 flows into the heater core 44. Along with this, warm air is blown out from the heater core 44. On the other hand, of the cold air blown out from the cooling heat exchanger 42, the remaining cold air other than the cold air flowing through the heater core 44 flows into the bypass passage 46a. Accordingly, the warm air blown from the heater core 44 and the cold air that has passed through the bypass passage 46a are mixed and blown from the air outlet 28a of the upper air passage 22a to the upper air passage 71a of the duct 70.

At this time, the air mix door 48a changes the ratio of the amount of air flowing through the heater core 44 and the amount of air flowing through the bypass passage 46a out of the amount of air blown out from the cooling heat exchanger 42, whereby the air blown out from the air outlet 28a. The temperature can be adjusted.

The air whose temperature is adjusted in this way flows through the upper air passage 71a of the duct 70 and then flows into the upper air passage 61a of the blower case 60. Accordingly, the air is sucked from the other side in the axial direction with respect to the fan 80a. Therefore, the fan 80a blows out the sucked air outward in the radial direction.

For example, when the mode door 84a opens the face opening 64a, the air blown from the fan 80a can be blown out from the face opening 64a toward the driver's upper body through the FACE duct 7a and the face outlet 8a. . When the mode door 84b opens the face opening 64b, the air blown from the fan 80a can be blown out from the face opening 64b toward the upper part of the passenger seat through the FACE duct 7b and the face outlet 8b. When the mode door 84c opens the defroster opening 64c, the air blown from the fan 80a can be blown from the defroster opening 64c toward the inner surface of the windshield in the vehicle interior through the DEF duct and the defroster outlet. it can.

On the other hand, the inside air is introduced into the lower air passage 22b through the inside / outside air switching door 25 and the inside / outside air guide 26 from the inside air introduction port 24b. The inside air flows through the filter 40 and then flows into the cooling heat exchanger 42. Thus, cold air is blown out from the cooling heat exchanger 42 in the lower air passage 22b.

Here, a part of the cold air blown out from the cooling heat exchanger 42 flows into the heater core 44. Along with this, warm air is blown out from the heater core 44. On the other hand, the remaining cold air other than the cold air flowing through the heater core 44 out of the cold air blown out from the cooling heat exchanger 42 flows into the bypass passage 46b. Accordingly, the warm air blown from the heater core 44 and the cold air that has passed through the bypass passage 46b are mixed and blown from the air outlet 28b of the lower air passage 22b to the lower air passage 71b of the duct 70.

At this time, the air mix door 48b changes the ratio of the amount of air flowing through the heater core 44 and the amount of air flowing through the bypass passage 46a out of the amount of air blown out from the cooling heat exchanger 42, whereby the air blown out from the air outlet 28b. The temperature can be adjusted.

The air whose temperature is adjusted in this way passes through the lower air passage 71b of the duct 70 and then flows into the lower air passage 61b of the blower case 60. Accordingly, this air is sucked into the fan 80b from one side in the axial direction. Therefore, the fan 80b blows out the sucked air outward in the radial direction.

For example, when the mode door 84d opens the foot opening 64d, the air blown from the fan 80b can be blown from the foot opening 64d toward the driver's lower body through the FOOT duct 7d and the foot outlet 8d. When the mode door 84e opens the foot opening 64e, the air blown from the fan 80b can be blown out from the foot opening 64e to the lower half of the passenger seat through the FOOT duct 7e and the foot outlet 8e.

According to the present embodiment described above, the air conditioning unit 10 of the vehicle air conditioner includes the heater unit 20 and the blower unit 30. The heater unit 20 includes a heater case 21, a cooling heat exchanger 42, and a heater core 44. In the cooling heat exchanger 42, the air and the refrigerant are arranged in the heater case 21 to exchange heat. The heater core 44 is disposed in the heater case 21, and air and engine cooling water exchange heat in the heater core 44. The blower unit 30 includes a blower case 60 having

air passages

61a and 61b and

openings

64a, 64b, 64c, 64d, and 64e. The

air passages

61 a and 61 b circulate the air blown from the

air outlets

28 a and 28 b of the heater case 21. The

openings

64a, 64b, 64c, 64d, and 64e blow out the air that has passed through the

air passages

61a and 61b into the vehicle interior. The blower unit 30 includes

fans

80a and 80b which are disposed in the blower case 60 and suck the air in the

air passages

61a and 61b and blow out the air from the

openings

64a, 64b, 64c, 64d and 64e into the vehicle interior. The blower case 60 is supported by the reinforcing member (beam member) 5. The reinforcing member 5 is formed so as to extend in the vehicle width direction, and both ends in the longitudinal direction are fixed to the

chassis

6a and 6b of the vehicle, respectively. The central portion S2 of the blower case 60 in the vehicle width direction (left-right direction) is offset toward the driver seat side in the vehicle width direction with respect to the central portion S1 of the reinforcing member 5 in the vehicle width direction.

Therefore, the blower case 60 is attached to a portion where the vibration amplitude of the reinforcing member 5 is smaller than that of the central portion S1 of the reinforcing member 5 in the vehicle width direction. Therefore, it is possible to suppress the reinforcing member 5 from vibrating due to the vibrations of the

fans

80a and 80b. As a result, it is possible to suppress the steering 7 and the instrument panel 3 in the vehicle cabin from shaking and giving the passenger an uncomfortable feeling.

In the present embodiment, the

face openings

64a and 64b are arranged adjacent to each other. The rotating shaft 81 is arranged offset to the right side (that is, the driver's seat side) with respect to the center portion S1a of the vehicle in the left-right direction.

For example, as shown in the comparative example of FIG. 5, when the rotation shaft 81 is located at the central portion S1a, the air volume blown from the fan 80a through the face opening 64b is blown out from the fan 80a through the face opening 64a. It will be more than the air volume. This is because the face opening 64b is located on the front side in the rotation direction of the rotation shaft 81 with respect to the face opening 64a.

Therefore, it is necessary to generate a pressure loss in the flow of air in the FACE duct 7b in order to bring the blown air blown out from the

face outlets

8a and 8b closer to each other. In other words, in order to bring the blown air blown from the

face outlets

8a and 8b closer to each other, a bent portion is provided in the FACE duct 7b, or a loss body that generates pressure loss in the air flow is added to the FACE duct 7b. It will be necessary. For this reason, noise is generated when air flows through the FACE duct 7b.

On the other hand, in the present embodiment, as described above, the rotation shaft 81 is arranged offset to the right side with respect to the vehicle center portion S1a in the left-right direction. The FACE duct 7a on the driver seat side can be shortened, and the FACE duct 7b on the passenger seat side can be lengthened. That is, the pressure loss of the FACE duct 7a on the driver seat side can be reduced, and the pressure loss of the FACE duct 7b on the passenger seat side can be increased. Thereby, the ventilation volume blown from the

face blower outlets

8a and 8b can be closely approached, without providing a bending part and a loss body in the FACE duct 7b.

Also, the same effects as those of the

face outlets

8a and 8b can be obtained at the

foot outlets

8d and 8e.

In the present embodiment, as described above, the rotation shaft 81 is arranged offset to the right side with respect to the vehicle center portion S1a in the left-right direction. As a result, the defroster opening 64c is offset toward the driver's seat with respect to the central portion S1a. For this reason, the air quantity which blows off from the defroster blower outlet to the driver's seat side among windshield inner surfaces can be increased. For this reason, the visibility ahead of the vehicle through the windshield can be improved.

In general, as shown in FIG. 6, the firewall 4 is provided with a through hole 9 for allowing the hot water pipe and the refrigerant pipe to pass through between the vehicle interior and the engine room (the vehicle exterior space in front of the vehicle). Yes. The through hole 9 is disposed at the center of the firewall 4 in the vehicle width direction. This is because the parts constituting the vehicle are made common even though the mounting position of the steering wheel 7 is either the left or right position.

In the present embodiment, the center portion S2 of the blower case 60 in the vehicle width direction is arranged offset from the driver seat side with respect to the center portion S1 of the reinforcing member 5 in the vehicle width direction. For this reason, compared with the comparative example (refer FIG. 7) which arrange | positions the center part S2 of the blower case 60 in the center part S1a of a vehicle, the distance between the heat exchanger 42 for cooling, the heater core 44, and the through-hole 9 is shortened. can do. Therefore, the refrigerant pipe 42a connected to the cooling heat exchanger 42 and the hot water pipe (not shown) connected to the heater core 44 can be shortened. 5 and 6 illustrate the cooling heat exchanger 42 in the heater unit 20, and the heater core 44 is not illustrated.
(Second Embodiment)
In the first embodiment, the example in which the central portion S2 of the blower case 60 in the vehicle width direction is offset toward the driver's seat with respect to the central portion S1 of the reinforcing member 5 in the vehicle width direction has been described. However, as shown in FIG. 8, the center portion S <b> 2 of the blower case 60 may be offset toward the passenger seat side in the vehicle width direction with respect to the center portion S <b> 1 of the reinforcing member 5. 8, the same reference numerals as those in FIG. 1 denote the same components, and the description thereof is omitted. Also in this case, in the present embodiment, as described above, the rotation shaft 81 may be arranged offset to the left side with respect to the vehicle center portion S1a in the left-right direction.
(Other embodiments)
In the first and second embodiments, the example in which the reinforcing member 5 is used as the beam member has been described. However, instead of this, the firewall 4 may be used as the beam member. In this case, the blower case 60 is fixed to the firewall 4 (see FIG. 9). It is necessary to fix the right side of the firewall 4 in the vehicle width direction to the chassis 6a and the left side of the firewall 4 in the vehicle width direction to the chassis 6b. In this case, the central portion S2 of the blower case 60 in the vehicle width direction may be arranged offset to the driver's seat side with respect to the central portion of the firewall 4 in the vehicle width direction. Alternatively, the central portion S2 of the blower case 60 may be offset from the central portion of the firewall 4 toward the passenger seat.

Further, both the reinforcing member 5 and the firewall 4 may be used as the beam member. In this case, the blower case 60 is fixed to each of the reinforcing member 5 and the firewall 4.

In this case, the central portion S2 of the blower case 60 may be arranged offset to the driver's seat side with respect to the central portion of the firewall 4 and the central portion S1 of the reinforcing member 5. Alternatively, the central portion S2 of the blower case 60 may be arranged offset to the passenger seat side with respect to the central portion of the firewall 4 and the central portion S1 of the reinforcing member 5.

In the first and second embodiments, the example used in the heater unit 20 including the cooling heat exchanger 42 and the heater core 44 has been described. However, instead of the cooling heat exchanger 42 and the heater core 44, Either one may be used for the heater unit 20.

Note that the present disclosure is not limited to the above-described embodiment, and can be appropriately changed without departing from the gist of the present disclosure. Further, the above embodiments are not irrelevant to each other, and can be combined as appropriate unless the combination is clearly impossible. In each of the above-described embodiments, it is needless to say that elements constituting the embodiment are not necessarily essential unless explicitly stated as essential and clearly considered essential in principle. Yes.

Claims

A heat exchange unit (20) having a heat exchange case (21) for circulating air, and a heat exchanger (42, 44) arranged in the heat exchange case for exchanging heat with the air;
A blower case (60) having openings (64a to 64e) for blowing the air blown out from the heat exchange case into the vehicle interior, and the air blown out of the heat exchange case disposed in the blower case A blower unit (30) having a fan (80a, 80b) that blows the flow into the vehicle compartment from the blowout opening as it rotates,
The blower case is supported by beam members (4, 5) which are formed to extend in the vehicle width direction and are fixed to the vehicle chassis (6a, 6b) at both ends in the longitudinal direction.
A vehicle air conditioner in which a central portion (S2) of the blower case in the vehicle width direction is offset from a central portion (S1) of the beam member in the vehicle width direction.
The vehicle air conditioner according to claim 1, wherein a central portion of the blower case is offset toward a driver's seat in a vehicle width direction with respect to the central portion of the beam member.
The vehicle air conditioner according to claim 1, wherein a central portion of the blower case is offset toward a passenger seat side in a vehicle width direction with respect to the central portion of the beam member.
The fan is supported by a rotating shaft and rotates together with the rotating shaft, thereby sucking the air blown from the heat exchange case and blowing the air into the vehicle compartment from the opening.
The vehicle air conditioner according to any one of claims 1 to 3, wherein the rotation shaft is offset with respect to a central portion (S1a) of the vehicle in a vehicle width direction.
The beam member is disposed at the front of the vehicle with respect to the vehicle interior, and includes at least a firewall (4) that isolates the interior of the vehicle interior from the exterior of the vehicle interior, and a reinforcement member (5) that reinforces the chassis of the vehicle. The vehicle air conditioner according to any one of claims 1 to 4, which is one side.