JP2022020878A - Vehicular air conditioner - Google Patents

Abstract

To provide an air conditioner which can secure a desired air quantity more surely.SOLUTION: A transistor (40) of a vehicular air conditioner (10) is disposed between a centrifugal multiblade fan (23) and a refrigerant pipe (32) and has: a body part (41) which adjusts electric energy input to a motor (22); and a heat radiation part (42) which radiates heat generated when the body part (41) adjusts the electric energy. The heat radiation part (42) is disposed so as to face a ventilation passage (P). The heat radiation part (42) at least partially overlaps with the refrigerant pipe (32) when viewed from the upstream side of a ventilation unit (20) to the downstream side with respect to an air blowing direction of ventilation air.SELECTED DRAWING: Figure 3

Description

The present invention relates to a vehicle air conditioner in which a transistor or a refrigerant pipe faces the inside of a housing.

Many vehicles are equipped with a vehicle air conditioner to regulate the temperature inside the vehicle. The vehicle air conditioner is provided with a transistor for adjusting the amount of electric power input to the blower motor and a refrigerant pipe through which the refrigerant flows. As a technique relating to a vehicle air conditioner, the invention according to Patent Document 1 and the invention according to Patent Document 2 are disclosed.

Patent Document 1 discloses that a transistor is arranged so as to face the inside of a housing downstream of a fan that blows air. The transistor can be cooled by arranging it downstream of the fan and facing the inside of the housing.

Patent Document 2 discloses that a part of the refrigerant pipe is arranged inside the housing. Compared with the case where the refrigerant pipe is passed to the outside of the housing, the vehicle air conditioner can be downsized and the length of the refrigerant pipe can be shortened.

Jitsukaisho 62-115912 Japanese Unexamined Patent Publication No. 2017-128219

As described above, from the viewpoint of cooling the transistor and reducing the size of the vehicle air conditioner, there is a demand for providing the transistor and the refrigerant pipe inside the housing. On the other hand, the inside of the housing is a ventilation path through which air flows, and the transistors and the refrigerant pipes provided in the housing serve as resistance for ventilation. It is preferable that the desired amount of air can be secured by optimizing the arrangement of the transistors and the refrigerant pipes and efficiently blowing air.

An object of the present invention is to provide an air conditioner that can more reliably secure a desired amount of air.

In the following description, reference numerals in the accompanying drawings are added in parentheses to facilitate understanding of the present invention, whereby the present invention is not limited to the illustrated form.

According to the present invention, a blower unit (20) capable of blowing air, a temperature control unit (30) that harmonizes the temperature of the blown air sent from the blower unit (20), and a transistor (40) are provided.
The ventilation unit (20) includes a scroll case (21) having a scroll outlet (21c) for blowing out the blown air, a motor (22) having a rotating shaft (22a) that rotates by energization, and the rotating shaft. A centrifugal multi-blade fan (23), which is attached to (22a) and generates the blown air by rotating, includes a centrifugal multi-blade fan (23).
The temperature control unit (30) has a housing inlet (31a) for taking in the blown air blown out from the scroll outlet (21c) and an inside through which the blown air flowing in from the housing inlet (31a) passes. The housing (31) in which the space (31b) is formed, the refrigerant pipe (32) in which at least a part thereof extends in the internal space (31b) and the refrigerant flows inside, and the refrigerant pipe (32) are connected to the inside. A heat exchanger (33), which exchanges heat with the blown air as the refrigerant flows, is included.
The heat exchanger (33) is arranged on the downstream side of the refrigerant pipe (32) in the flow direction of the blown air, and the inflow surface (33a) of the blown air serves on the housing inlet (31a). Arranged along the flow direction of the blowing air passing through,
The transistor (40) is arranged between the centrifugal multi-blade fan (23) and the refrigerant pipe (32), and has a main body (41) that adjusts the amount of electric power input to the motor (22). The main body (41) has a heat radiating unit (42) that dissipates heat generated when adjusting the amount of electric power.
In the vehicle air conditioner (10; 10A), the heat radiating unit (42) is arranged so as to face the ventilation path (P) through which the blown air passes.
When the heat radiation unit (42) is viewed from the upstream side to the downstream side of the blower unit (20) with reference to the blower direction of the blown air, at least a part thereof overlaps with the refrigerant pipe (32). A vehicle air conditioner (10; 10A) is provided.

Preferably, the refrigerant pipe (32) includes a refrigerant supply pipe (32a) for supplying the refrigerant to the heat exchanger (33) and a refrigerant recovery pipe (32b) for recovering the refrigerant from the heat exchanger (33). Have,
At least a part of the heat radiating unit (42) overlaps with the refrigerant supply pipe (32a) and the refrigerant recovery pipe (32b) when viewed from the upstream side to the downstream side of the blower unit (20). ..

Preferably, when the centrifugal multi-blade fan (23) generates the blown air, the centrifugal multi-blade fan (23) takes in air from above and blows it out in the outer diameter direction.
The scroll outlet (21c) blows out the blown air to the right or left in the vehicle traveling direction.
When the heat radiating portion (42) is viewed from the upstream side to the downstream side of the blower unit (20), the heat radiation unit (42) is on the upper surface (Pu) of the inner surface facing the blower path (P) rather than the lower surface (Pd). They are placed in close proximity.

Preferably, the blower unit (20) is arranged on the right side or the left side in the vehicle traveling direction with respect to the temperature control unit (30).

Preferably, when the centrifugal multi-blade fan (23) generates the blown air, the air is taken in from the left or right in the vehicle traveling direction and blown out in the out-diameter direction.
The scroll outlet (21c) blows out the blown air downward,
The heat radiating portion (42) is formed on a surface of the inner surface facing the air passage (P) corresponding to a portion of the inner surface facing the air passage (P) when the upstream side to the downstream side of the air blowing unit (20) is viewed. They are placed in close proximity.

Preferably, the scroll case (21) and the housing (31) are integrally formed.

INDUSTRIAL APPLICABILITY The present invention can provide an air conditioner that can more reliably secure a desired amount of air.

FIG. 3 is a perspective view of a vehicle air conditioner according to the first embodiment. FIG. 2 is a sectional view taken along line 2-2 of FIG. FIG. 2 is a sectional view taken along line 3-3 of FIG. It is sectional drawing of the air-conditioning apparatus for vehicles by Example 2. FIG.

Embodiments of the present invention will be described below with reference to the accompanying drawings. In the figure, Fr indicates the front, Rr indicates the rear, Le indicates the left, Ri indicates the right, Up indicates the top, and Dn indicates the bottom.

<Example 1>
See FIGS. 1 and 2. The vehicle air conditioner 10 (hereinafter, abbreviated as "air conditioner 10") is used for controlling the temperature in the vehicle interior, and is arranged in front of the vehicle interior, for example.

The air conditioner 10 adjusts the amount of blown air in a case 11 that can be divided into upper and lower parts, a blower unit 20 for blowing air, a temperature control unit 30 that harmonizes the temperature of the blown air sent from the blower unit 20. A transistor 40 for the purpose is provided. For example, the temperature control unit 30 is arranged on the left side of the blower unit 20. The air conditioner 10 is a horizontal air conditioner in which the temperature control unit 30 and the blower unit 20 are arranged at substantially the same height.

In the air conditioner 10, the blower unit 20 may be arranged on the left side and the temperature control unit 30 may be arranged on the right side. Whether the blower unit 20 and the temperature control unit 30 are arranged on the left or right can be arbitrarily determined depending on the position of the driver's seat and the like.

In the case 11, the scroll case 21 as the housing of the blower unit 20 and the housing 31 as the housing of the temperature control unit 30 are integrally formed. The front ends of the scroll case 21 and the housing 31 are connected to each other. The ventilation path P through which the ventilation air flows extends in the left-right direction of the vehicle.

The blower unit 20 is attached to a motor 22 having a rotary shaft 22a that rotates by energization and a rotary shaft 22a in a scroll case 21 in which the flow path gradually expands from upstream to downstream with respect to the blower direction of the blown air. A centrifugal multi-blade fan 23 (hereinafter, abbreviated as "fan 23") that generates blown air by rotating the fan 23 is provided.

The scroll case 21 has an outside air introduction port 21a formed at the upper part for introducing air from the outside, an inside air introduction port 21b for introducing air inside the vehicle interior, and a scroll outlet 21c for blowing air blown toward the temperature control unit 30. , Have.

The outside air introduction port 21a and the inside air introduction port 21b may be formed in an intake box (not shown) which is a separate member from the scroll case 21 and is installed above the scroll case 21. Whether the scroll case 21 and the intake box are integrally molded (see FIG. 1) or configured as a separate member can be arbitrarily determined depending on the cost of the molding die, ease of assembly, and the like.

As the motor 22, any electric motor such as a brush motor or a brushless motor can be used.

The fan 23 takes in air from the outside air introduction port 21a and / or the inside air introduction port 21b formed above, and blows out the blown air in the out-of-diameter direction of the scroll case 21. That is, it can be said that the fan 23 takes in air from above and blows it out in the out-diameter direction when the blown air is generated.

The temperature control unit 30 is an evaporator in which a refrigerant pipe 32 through which a refrigerant flows is connected to a housing 31 as a housing, and the refrigerant pipe 32 is connected to the inside to allow the refrigerant to flow and exchange heat with the refrigerant to cool the blown air. 33 (heat exchanger 33), a heater 34 arranged on the downstream side of the evaporator 33 to heat the cooled blown air, and blown air to the heater 34 arranged between the evaporator 33 and the heater 34. An air mix door 35 for adjusting the amount of air passing through the air mix door 35 is provided.

The housing 31 has a housing inlet 31a that takes in the blown air blown out from the scroll outlet 21c, an internal space 31b through which the blown air flowing in from the housing inlet 31a passes, and a temperature that passes through the internal space 31b. A housing outlet 31c, in which the regulated blown air of the above is blown into the vehicle interior, is formed.

The housing outlet 31c has a defrost outlet that blows out toward the window glass facing the passenger compartment, a vent outlet that blows out toward the upper space of the passenger compartment, a foot outlet that blows out toward the lower space of the passenger compartment, and the like. .. The housing outlet 31c shown in FIG. 2 is a foot outlet. The housing 31 is provided with opening / closing doors (not shown) for opening and closing the outlets at positions corresponding to the defrost outlet, the vent outlet, and the foot outlet, respectively.

See FIG. At least a part of the refrigerant pipe 32 faces the inside of the housing 31. The refrigerant pipe 32 includes a refrigerant supply pipe 32a that supplies the refrigerant to the evaporator 33, and a refrigerant recovery pipe 32b that recovers the refrigerant from the evaporator 33.

See FIG. The evaporator 33 is arranged on the downstream side of the refrigerant pipe 32. Further, the evaporator 33 is arranged so that the inflow surface 33a into which the blown air flows is along the flow direction of the blown air passing through the housing inflow port 31a (see the white arrow). When the flow direction of the blown air flowing through the blower path P (see the white arrow) is set as the first flow direction, the evaporator 33 has the flow direction of the blown air flowing in from the inflow surface 33a in the first flow direction. On the other hand, it can be said that they are arranged so as to be substantially vertical.

The entire amount of blown air passes through the evaporator 33. The air passing through the evaporator 33 is cooled by heat exchange with the refrigerant.

The heater 34 is arranged at the lower part in the housing 31. A cooling water pipe 36 through which cooling water flows is connected to the heater 34. For example, cooling water heated by the engine when the engine is cooled flows inside the heater 34. The cooling water pipe 36 includes a cooling water supply pipe 36a that supplies cooling water to the heater core 34, and a cooling water recovery pipe 36b that recovers the cooling water from the heater core 34.

As the blown air cooled by the evaporator 33 passes through the heater 34, the blown air is heated by exchanging heat with the cooling water. The amount and ratio of the blown air passing through the heater 34 is adjusted by the air mix door 35.

As the heater 34, any heater such as an electric heater can be applied as long as it can heat the blown air.

The air mix door 35 is a plate-shaped member provided so as to be displaceable in the vertical direction and for blocking the blown air. When the air mix door 35 is in the first position (for example, when it is positioned so as to abut on the lower bottom surface of the internal space 31b), all of the blown air bypasses the heater 34. On the other hand, when the air mix door 35 is in the first position (for example, when it is positioned so as to abut on the upper bottom surface of the internal space 31b), all of the blown air passes through the heater 34. When the air mix door 35 is between the first position and the second position, the feed air is distributed between the air bypassing the heater 34 and the air passing through the heater 34. The amount of air blown through the heater 34 is adjusted by the position of the air mix door 35, and the temperature of the air blown into the vehicle interior is adjusted.

The transistor 40 faces the air passage P through which the air is blown from the air blower unit 20 to the temperature control unit 30 along substantially the left-right direction. The transistor 40 is mounted on the blower unit 20 side of the blower path P. Alternatively, it may be mounted on the temperature control unit 30 side of the air passage P.

Further, the transistor 40 faces Pr above and behind the center of the air passage P. See FIG. The lower dimension Sdn between the lower part of the heat radiating unit 42 and the lower surface Pd of the inner surface of the air passage P is the upper dimension Sd between the upper part of the heat radiating unit 42 and the upper surface Pu of the inner surface of the air passage P. Longer than. That is, the heat radiating portion 42 of the transistor 40 is arranged closer to the upper surface Pu than the lower surface Pd of the inner surface facing the air passage P when the downstream side is viewed from the upstream side of the blower unit 20.

The rear surface Pr of the air passage R is a surface facing the front surface Pf of the air passage P. The front surface Pf of the air passage P can also be said to be a continuous surface continuous from the outer peripheral surface covering the outer peripheral surface of the fan 23. It can also be said that the transistor 40 is provided on the surface Pr facing the continuous surface Pf which is continuous from the outer peripheral surface covering the outer peripheral surface of the fan 23.

The transistor 40 is arranged between the fan 23 and the refrigerant pipe 32, and dissipates heat generated when the main body 41 adjusts the amount of electric power input to the motor 22 and the main body 41 adjusts the amount of electric power. It has a heat radiating unit 42 and a heat radiating unit 42.

The heat radiating portion 42 is composed of, for example, fins made of a plurality of metal plates. The main body 41 partially faces the air passage P, which is a flow path for the blast air, and the heat radiating unit 42 faces the blast P as a whole.

The heat radiating unit 42 overlaps with both the refrigerant supply pipe 32a and the refrigerant recovery pipe 32b when viewed from the upstream side to the downstream side of the blower unit 20. That is, when the heat radiation unit 42 is viewed from the upstream side to the downstream side of the blower unit 20, at least a part thereof overlaps with the refrigerant pipe 32.

Further, the heat radiating portion 42 is arranged closer to the upper surface Pu than the lower surface Pd on the inner surface facing the air passage P.

The operation of the air conditioner 10 will be described.

When electricity flows through the motor 22, the rotating shaft 22a and the fan 23 fixed to the rotating shaft 22a rotate, and wind is generated. This wind is discharged from the scroll outlet 21c as blown air and flows through the blower path P from right to left. The blown air that has flowed through the blower path P flows from the housing inflow port 31a to the internal space 31b of the housing 31.

The blown air passes through the evaporator 33 from the front to the rear, and is cooled by heat exchange with the refrigerant when passing through the evaporator 33. The cooled blown air flows toward the housing outlet 31c. At this time, the amount of blown air passing through or detouring the heater 34 is adjusted depending on the position of the air mix door 35. The blown air that has passed through the heater 34 is heated. The blown air bypassing the heater 34 is not heated. The temperature of the blown air blown from the housing outlet 31c is adjusted by the amount of air passing through the heater 34. The temperature-controlled blown air is blown out at a position adjusted by an opening / closing door corresponding to each housing outlet 31c, and is blown toward the vehicle interior.

See FIGS. 2 and 3. The evaporator 33 is connected to a compressor and a condenser (none of which are shown) arranged outside the housing 31 by piping to form a refrigeration cycle. The refrigerant in the evaporator 33 circulates in the refrigeration cycle via the refrigerant pipe 32 and the expansion device E when cooling the blown air.

The rotation speed of the fan 23 is controlled while the air conditioner 10 is operating. Specifically, the amount of electric power input to the motor 22 is adjusted by adjusting the resistance value of electricity in the main body 41 of the transistor 40. At this time, a part of the electric power input to the transistor 40 is converted into heat, and the main body 41 of the transistor 40 generates heat, which may cause a high temperature. The heat of the main body 41 is transmitted to the heat radiating section 42 facing the air passage P. The heat radiating unit 42 is cooled by the blown air flowing through the air passage P coming into contact with the heat radiating unit 42. This prevents the main body 41 from becoming excessively hot.

The air conditioner 10 described above has the following effects.

See FIG. At least a part of the heat radiating portion 42 of the transistor 40 overlaps with the refrigerant pipe 32 when viewed from the upstream side with respect to the blown air. The transistor 40 and the refrigerant pipe 32, which provide ventilation resistance to the air flow, are arranged so as to overlap each other with respect to the air flow direction. As a result, the area of the portion that becomes the ventilation resistance with respect to the flow path area can be reduced, and the smooth flow of air can be ensured. As a result, it is possible to provide an air conditioner 10 that can more reliably secure a desired amount of air.

In the refrigerant pipe 32, a refrigerant supply pipe 32a and a refrigerant recovery pipe 32b are generally set. By arranging the three parts of the heat radiation portion 42 of the transistor 40, the refrigerant supply pipe 32a, and the refrigerant recovery pipe 32b so as to overlap with each other with respect to the air flow direction, a portion that further becomes a ventilation resistance with respect to the flow path area. The area of the can be reduced, which is preferable.

See also FIG. When the fan 23 generates blown air, if air is taken in from the upper direction, the air tends to be concentrated in the lower part of the blower path P due to inertia. By arranging the heat radiating portion 42 of the transistor 40, which serves as a ventilation resistance, closer to the upper surface Pu than the lower surface Pd of the inner surface facing the air passage P, the lower portion of the air passage P having a large air volume can be avoided and more. A large amount of air can be secured.

See FIG. The blower unit 20 is arranged on the right side or the left side of the temperature control unit 30. That is, it is a horizontal type air conditioner 10. In the case of the vertical air conditioner 10 in which the blower unit 20 and the temperature control unit 30 are arranged vertically, the housing 31 is short on the left and right, so that the refrigerant pipe 32 can be relatively easily provided outside the housing 31. .. On the other hand, in the case of the horizontal installation type, since the blower unit 20 and the temperature control unit 30 are continuously arranged in the left-right direction, it is difficult to provide the refrigerant pipe 32 on the outside in the left-right direction of the air conditioner 10. Therefore, it is requested to arrange the refrigerant pipe 32 so as to pass through the inside of the housing 31 (to cross the air passage P) and shorten the length of the pipe, but the ventilation resistance in the air passage P is high. There is a problem. In this respect, the present invention is particularly preferable because it can suppress an increase in ventilation resistance even in the horizontally installed air conditioner 10.

The present invention can achieve the same effect by applying it to the vehicle air conditioner 10 in which the scroll case 21 and the housing 31 are integrally formed.

<Example 2>
Next, the air conditioner 10A according to the second embodiment will be described with reference to the drawings.

As shown in FIG. 4, the air conditioner 10A is a vertical type vehicle air conditioner. For the parts common to the first embodiment, reference numerals are used and detailed description thereof will be omitted.

When the fan 23 generates blown air, the fan 23 takes in air from the left side in the vehicle traveling direction and blows it out in the out-diameter direction. The blown air blown out is blown downward from the scroll outlet 21c.

When the heat radiating unit 42 is viewed from the upstream side to the downstream side of the blower unit 20, it is close to the surface (left side) corresponding to the portion (left side) of the inner surface facing the blower path P that has taken in air. And are arranged.

In the case of the vertical air conditioner 10A, it is possible to take in air from the right side. In this case, the heat radiating portion 42 is arranged close to the surface (right side surface) corresponding to the portion (right side) where the air is taken in. That is, the heat radiating unit 42 is arranged close to the surface of the inner surface facing the air passage P that corresponds to the portion that has taken in air when the air radiation unit 42 is viewed from the upstream side to the downstream side. , Can be said.

The air conditioner 10A described above also has the predetermined effect of the present invention.

In addition, when the fan 23 generates blown air, if air is taken in from the left side, a large amount of air flows to the right side of the blower path P due to inertia. The heat radiating portion 42 of the transistor 40, which serves as a ventilation resistance, is arranged on the left side of the air passage P, avoiding the right side where the air volume is large. That is, in the transistor 40, the right dimension between the right portion of the heat radiating portion 42 and the right surface (not shown) of the inner surface of the air passage P is the left portion of the heat radiating portion 42 and the inner surface of the air passage P. Of these, it is arranged so as to be longer than the left dimension between the left surface (not shown). By arranging in this way, a larger air volume can be secured.

Similarly, when the fan 23 generates blown air, if air is taken in from the right side, a large amount of air flows to the left side of the blower path P due to inertia. The heat radiating portion 42 of the transistor 40, which serves as a ventilation resistance, is arranged on the right side of the air passage P, avoiding the left side where the air volume is large. That is, in the transistor 40, the left dimension between the left portion of the heat radiating portion 42 and the left surface (not shown) of the inner surface of the air passage P is the right portion of the heat radiating portion 42 and the inner surface of the air passage P. Of these, it is arranged so as to be longer than the right dimension between the right surface (not shown). By arranging in this way, more air volume can be secured.

The air conditioners 10 and 10A according to the present invention are not limited to those in which the scroll case 21 and the housing 31 are integrally formed. The scroll case 21 and the housing 31 may be configured separately, or the scroll case 21 and the housing 31 may be connected by a cylinder (not shown) constituting the air passage P. In this case, the transistor 40 may be mounted on the cylinder.

The present invention is not limited to the examples as long as the actions and effects of the present invention are exhibited.

The air conditioner of the present invention is suitable for controlling the temperature in the passenger compartment of a passenger vehicle.

10, 10A ... Vehicle air conditioner 20 ... Blower unit 21 ... Scroll case, 21c ... Scroll outlet 22 ... Motor, 22a ... Rotating shaft 23 ... Centrifugal multi-blade fan 30 ... Temperature control unit 31 ... Housing, 31a ... Housing flow Inlet, 31b ... Internal space 32 ... Refrigerant pipe, 32a ... Refrigerant supply pipe, 32b ... Refrigerant recovery pipe 33 ... Evaporator (heat exchanger), 33a ... Inflow surface 40 ... Transistor 41 ... Main body 42 ... Heat dissipation part P ... Blower , Pd ... bottom surface, Pu ... top surface

Claims (6)

A blower unit (20) capable of blowing air, a temperature control unit (30) for harmonizing the temperature of the blown air sent from the blower unit (20), and a transistor (40) are provided.
The ventilation unit (20) includes a scroll case (21) having a scroll outlet (21c) for blowing out the blown air, a motor (22) having a rotating shaft (22a) that rotates by energization, and the rotating shaft. A centrifugal multi-blade fan (23), which is attached to (22a) and generates the blown air by rotating, includes a centrifugal multi-blade fan (23).
The temperature control unit (30) has a housing inlet (31a) for taking in the blown air blown out from the scroll outlet (21c) and an inside through which the blown air flowing in from the housing inlet (31a) passes. The housing (31) in which the space (31b) is formed, the refrigerant pipe (32) in which at least a part thereof extends in the internal space (31b) and the refrigerant flows inside, and the refrigerant pipe (32) are connected to the inside. A heat exchanger (33), which exchanges heat with the blown air as the refrigerant flows, is included.
The heat exchanger (33) is arranged on the downstream side of the refrigerant pipe (32) in the flow direction of the blown air, and the inflow surface (33a) of the blown air serves on the housing inlet (31a). Arranged along the flow direction of the blowing air passing through,
The transistor (40) is arranged between the centrifugal multi-blade fan (23) and the refrigerant pipe (32), and has a main body (41) that adjusts the amount of electric power input to the motor (22). The main body (41) has a heat radiating unit (42) that dissipates heat generated when adjusting the amount of electric power.
In the vehicle air conditioner (10; 10A), the heat radiating unit (42) is arranged so as to face the ventilation path (P) through which the blown air passes.
When the heat radiation unit (42) is viewed from the upstream side to the downstream side of the blower unit (20) with reference to the blower direction of the blown air, at least a part thereof overlaps with the refrigerant pipe (32). Vehicle air conditioner (10; 10A). The refrigerant pipe (32) has a refrigerant supply pipe (32a) for supplying the refrigerant to the heat exchanger (33) and a refrigerant recovery pipe (32b) for recovering the refrigerant from the heat exchanger (33). ,
At least a part of the heat radiating unit (42) overlaps with the refrigerant supply pipe (32a) and the refrigerant recovery pipe (32b) when viewed from the upstream side to the downstream side of the blower unit (20). The vehicle air conditioner (10; 10A) according to claim 1. When the centrifugal multi-blade fan (23) generates the blown air, the centrifugal multi-blade fan (23) takes in air from above and blows it out in the outer diameter direction.
The scroll outlet (21c) blows out the blown air to the right or left in the vehicle traveling direction.
The heat radiating portion (42) is located on the upper surface (Pu) of the inner surface facing the air passage (P) rather than the lower surface (Pd) when viewed from the upstream side to the downstream side of the air blowing unit (20). The vehicle air conditioner (10) according to claim 1 or 2, which is arranged in close proximity to each other. The vehicle air conditioner according to any one of claims 1 to 3, wherein the blower unit (20) is arranged on the right side or the left side in the vehicle traveling direction with respect to the temperature control unit (30). (10). When the centrifugal multi-blade fan (23) generates the blown air, the centrifugal multi-blade fan (23) takes in air from the left or right in the vehicle traveling direction and blows it out of the diameter.
The scroll outlet (21c) blows out the blown air downward,
The heat radiating portion (42) is formed on a surface of the inner surface facing the air passage (P) corresponding to a portion of the inner surface facing the air passage (P) when the upstream side to the downstream side of the air blowing unit (20) is viewed. The vehicle air conditioner (10A) according to claim 1 or 2, which is arranged in close proximity to each other. The vehicle air conditioner (10; 10A) according to any one of claims 1 to 5, wherein the scroll case (21) and the housing (31) are integrally formed.

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