JP6934274B2 - Vehicle air conditioner - Google Patents

Description

The present invention relates to a vehicle air conditioner used for temperature control of a vehicle interior.

Recently, a vehicle air conditioner called a center HVAC (Heating, Ventilation, and Air Conditioning) has been proposed in response to a demand for space saving. As described in Patent Document 1, the center HVAC is a device in which a blower, an evaporator, and a heater core are housed in one unit case. The unit case is located below the instrument panel in front of the vehicle and is assembled at the center position in the vehicle width direction.

Patent Document 1 discloses that a rib 38 is provided downstream of an air flow path through which warm air flows from the heater core 31 to enhance the mixability between the hot air and the cold air that has passed through the evaporator 21. The rib 38 is inclined upward and is provided so as to project inward from the front wall Cf of the unit case C forming the air flow path, and the warm air is forced into the bypass passage 32 through which the cold air flows. Push in.

Japanese Unexamined Patent Publication No. 2001-113931

For the center HVAC, it is desired to improve the uniformity of the blowing temperature while reducing the increase in pressure loss.

By improving the mixability of cold air and hot air as described above, when a plurality of outlets are provided side by side in the vehicle width direction in the passenger compartment, the temperature of the air conditioning air blown from each outlet can be adjusted. Easy to make uniform. However, as described in Patent Document 1, if the rib is simply provided downstream of the air flow path through which the warm air from the heater core flows, there is a problem that the pressure loss becomes large and a predetermined air volume cannot be obtained.

Therefore, one of the objects of the present invention is to provide an air conditioner for a vehicle capable of improving the uniformity of the blowing temperature while reducing the increase in pressure loss.

The vehicle air conditioner according to one aspect of the present invention is
It is a vehicle air conditioner that includes a blower, a heat exchanger for cooling, and a heat exchanger for heating, and these are collectively assembled in the center of the vehicle in the vehicle width direction.
A protrusion provided above the vehicle of the heating heat exchanger is provided.
The protrusion is provided with a wind receiving surface that receives air flowing through the cooling heat exchanger arranged in front of the vehicle from the heating heat exchanger.
The wind receiving surface includes an inclined surface in which the upper end portion of the central portion in the vehicle width direction and the side end portions in the vehicle width direction of the protrusion are located behind the lower end portion of the central portion.

The above-mentioned vehicle air conditioner is provided with a protrusion having a wind receiving surface having a specific shape above the heat exchanger for heating, thereby reducing the increase in pressure loss and reducing the blowout temperature as described below. Uniformity can be improved.

The flow of warm air from the heating heat exchanger is less likely to be obstructed by the protrusion because the protrusion is installed above the heating heat exchanger. When the air flowing through the cooling heat exchanger hits the wind receiving surface of the protrusion, especially the lower end of the central portion in the vehicle width direction, the upper end of the central portion and the left and right sides in the vehicle width direction are along the inclined surface. It can flow from the front of the vehicle to the rear of the vehicle while flowing toward the end, and the flow velocity is unlikely to decrease even if it hits the protrusion. By providing a specific protrusion at a specific position in this way, it is easy to reduce an increase in pressure loss and secure a predetermined air volume.

When the air flowing through the cooling heat exchanger hits the protrusion as described above, it tends to flow uniformly toward each of the left side end portion and the right side end portion along the inclined surface. Since the predetermined air volume is secured as described above, the air flowing toward each side end can be mixed well with the warm air, and an conditioned air having an appropriate temperature can be formed. That is, it is easy to perform the above mixing uniformly in the vehicle width direction. Therefore, even when a plurality of outlets are provided side by side in the vehicle interior in the vehicle interior, the temperature difference of the conditioned air from each outlet can be reduced and the uniformity of the outlet temperature can be improved.

It is a schematic block diagram which shows the vehicle air-conditioning apparatus of Embodiment 1, and shows the state which the opening degree of a door part is 0%. It is a schematic block diagram which shows the vehicle air-conditioning apparatus of Embodiment 1, and shows the state which the opening degree of a door part is 30%. In the vehicle air conditioner of the first embodiment, (A) is a plan view schematically showing a state seen from the lines (a)-(a) shown in FIG. 1, and (B) is a schematic view of a protrusion. It is a perspective view which shows.

Hereinafter, the vehicle air conditioner of the present invention will be specifically described with reference to the drawings. In the drawings, the same reference numerals indicate the same names.

[Embodiment 1]
(overall structure)
The vehicle air conditioner 1 of the first embodiment will be described with reference to FIGS. 1 to 3. FIG. 3A is a plan view of the vehicle air conditioner 1 from the lines (a)-(a) shown in FIG. 1, and shows the cooling heat exchanger 3 and the door portion 5 as seen through. In each figure, the front of the vehicle is FR, the rear of the vehicle is RR, the right side of the vehicle is R, the left side of the vehicle is L, the upper part of the vehicle is UP, and the lower part of the vehicle is LW. In FIGS. 1 and 2, a mark with a black dot in the center of the circle means the front side of the paper surface, and a mark with an X mark in the circle means the back side of the paper surface. In FIGS. 1 and 2, the front side of the paper is L on the left side of the vehicle.

The vehicle air conditioner 1 of the first embodiment includes a blower 7, a cooling heat exchanger 3, and a heating heat exchanger 4, which are collectively assembled to a central portion in the vehicle width direction of the vehicle. It is a so-called center HVAC. Typically, a case 2 for collectively storing the door portion 5, the blower 7, the heat exchangers 3, 4, and the door portion 5 used for adjusting the temperature of the air conditioner air 8 is provided, and these are integrated as an integrated unit. , Attached to the instrument panel (not shown) of the vehicle. In such a vehicle air conditioner 1, the outside air or the inside air (air from the vehicle interior) is introduced into the case 2 by the blower 7, and the cooling heat exchanger 3 and the heating heat are introduced according to the opening degree of the door portion 5. The air-conditioning air 8 adjusted to a predetermined temperature by passing through the exchanger 4 and appropriately mixing the air (the detour air 83 and the warm air 84 described later) that have passed through the heat exchangers 3 and 4 (FIG. 2) is applied to the vehicle. Supply to various parts of the room.

The vehicle air conditioner 1 of the first embodiment further includes a protrusion 6 provided above the vehicle of the heating heat exchanger 4. The protrusion 6 includes a wind receiving surface 60 that receives air flowing through the cooling heat exchanger 3. As shown in FIG. 3, in the wind receiving surface 60, the upper end portion T of the central portion in the vehicle width direction and the side end portions LS and RS in the vehicle width direction of the protrusion 6 are more vehicles than the lower end portion C in the central portion. Includes a sloping surface located behind. In this example, the protruding portion 6 has a triangular pyramid shape as shown in FIG. 3 (B), and the inclined surface is continuously tapered from the lower end portion C of the central portion toward the upper end portion T and the central portion. It has a shape that tapers continuously from the lower end C to the side ends LS and RS. Therefore, the wind receiving surface 60 of this example is formed by a surface extending rearward of the vehicle from the lower end portion C of the central portion to the upper end portion T and the side end portions LS and RS. Hereinafter, each element of the vehicle air conditioner 1 will be briefly described, and then the protrusion 6 will be described in detail.

(Case)
As shown in FIG. 1, the case 2 typically has a blower 7 in front of the vehicle and above the vehicle, a cooling heat exchanger 3 below the blower 7, and a heating heat exchanger 3 behind the cooling heat exchanger 3. Stores the heat exchanger 4. The case 2 of this example also houses the protrusion 6. In the case 2, these storage members are used to make the outside air or the inside air air-conditioned air 8 having a predetermined temperature as described above, and to form these flow paths. The flow path is provided in a U shape from the front of the vehicle and above the vehicle, toward the rear of the vehicle while facing the bottom of the vehicle, and again toward the top of the vehicle. In the downstream flow path located behind the vehicle and above the vehicle, air passing through only the cooling heat exchanger 3 bypassing the heating heat exchanger 4 (hereinafter, may be referred to as a detour wind 83) and cooling. Air mix region 2M where air (warm air 84, FIG. 2) that has passed through the heat exchanger 3 for heating and further through the heat exchanger 4 for heating merges and is mixed (indicated by a two-point chain line in FIGS. 1 and 2). To be equipped with.

The case 2 is provided with a plurality of openings for guiding the air conditioner air 8 to various parts of the vehicle interior. Typically, the opening 21 on the face side provided above the vehicle, the opening 25 connected to the defroster (not shown), and the opening 23 on the foot side provided below the vehicle are located behind the vehicle of the case 2. Can be mentioned.

A face duct (not shown) is connected to the opening 21 on the face side, and a foot duct (not shown) is connected to the opening 23 on the foot side. Each duct is provided with an outlet that opens toward the passenger compartment and blows out the conditioned air 8. Typically, a plurality of outlets are provided at intervals in the vehicle width direction. Each outlet of the face duct blows air-conditioning air 8 toward the upper side of the passenger compartment (the upper body of the occupant in the driver's seat or the passenger seat). Each outlet of the foot duct is located near the foot of the passenger compartment.

In addition, in FIG. 1, the case 2 has a switching door 20 for switching between the opening 21 on the face side and the opening 25 on the defroster side, and a switching door for switching between the openings 21 and 25 above the vehicle and the opening 23 below the vehicle. The case where 22 is provided is illustrated.

(Cooling heat exchanger)
The cooling heat exchanger 3 is a member that cools the outside air or the inside air. The cooling heat exchanger 3 of this example is an evaporator in which a refrigerant is circulated. Known configurations can be used for heat exchange systems with evaporators. If the refrigerant is circulated in the evaporator, the outside air or the inside air is cooled as it passes through the evaporator, and cold air can be formed. If the circulation of the refrigerant in the evaporator is stopped, the outside air or the inside air simply passes through the evaporator without being cooled.

(Heat exchanger for heating)
The heating heat exchanger 4 is a member that heats the air that has passed through the cooling heat exchanger 3. The heating heat exchanger 4 of this example is a heater core in which a refrigerant for cooling a vehicle engine is circulated. Known configurations can be used for heat exchange systems with heater cores. If the refrigerant heated to a high temperature by the heat of the engine is circulated in the heater core, the air is heated when passing through the heater core, and warm air can be formed. Other heat exchangers for heating 4 include those provided with a heating wire heater.

(Door part)
The door portion 5 of this example is slidably provided between the cooling heat exchanger 3 and the heating heat exchanger 4. By changing the opening degree (slide position) of the door portion 5, the air (bypass air 83) that has passed through the cooling heat exchanger 3 flowing into the air mix region 2M and the warm air from the heating heat exchanger 4 Adjust the mixing ratio with 84. As the slide mechanism, a known configuration such as a meshing mechanism between the rack and the pinion can be used.

FIG. 1 shows a case where the opening degree of the door portion 5 is 0%. In this case, the door portion 5 is arranged so as to prevent the air that has passed through the cooling heat exchanger 3 from flowing to the heating heat exchanger 4. This state is, so to speak, a completely cooling state, and the outside air or the inside air introduced into the case 2 does not substantially pass through the heating heat exchanger 4, but passes through only the cooling heat exchanger 3 to be cooled. It flows through the downstream flow path as cold air (an example of air conditioning air 8) and is supplied to the passenger compartment.

When the opening degree of the door portion 5 is 100%, the door portion 5 is arranged so that the air that has passed through the cooling heat exchanger 3 passes through the heating heat exchanger 4. This state is, so to speak, a complete heating state, in which the refrigerant circulation of the cooling heat exchanger 3 is stopped, and the outside air or the inside air that has simply passed through the cooling heat exchanger 3 is heated by passing through the heating heat exchanger 4. It flows through the downstream flow path as warm air (an example of air conditioning air 8) and is supplied to the passenger compartment.

When the opening degree of the door portion 5 is more than 0% and less than 100% (the case where the opening degree is 30% is shown in FIG. 2), the detour wind 83 and the heating heat exchanger 4 that have passed through the cooling heat exchanger 3 are installed. Both of the passed warm air 84 merge and are mixed in the air mix region 2M, and are supplied to the vehicle interior as intermediate temperature air (an example of air conditioning air 8).

(Protrusion)
"Overview"
The protrusion 6 is provided above the heat exchanger 4 for heating and functions as a wind guide member, and contributes to enhancing the mixing property in the air mix region 2M. Specifically, the protrusion 6 directs the detour wind 83 from the front and the bottom of the vehicle toward the rear of the vehicle and the upper side of the vehicle, and guides the detour wind 83 from the central portion in the vehicle width direction toward the left and right side end portions. To be equipped. As shown in FIG. 3, the wind receiving surface 60 has the upper end portion T of the central portion, the left side end portion LS, and the right side end portion RS all rearward of the vehicle with respect to the lower end portion C of the central portion. Includes an inclined surface formed to be located. The wind receiving surface 60 of this example is substantially composed of the inclined surface.

《Main functions and actions》
Here, when the ducts are provided with a plurality of outlets arranged in the vehicle width direction as described above, the ducts correspond to the outlets along the vehicle width direction in the face side opening 21 and the foot side opening 23. The length may also be increased to some extent. It is desired that the temperature of the air conditioner air 8 blown out from the openings 21 and 23 of such an elongated hole is uniform in the vehicle width direction. When the protrusion 6 is provided, the above-mentioned inclined surface is inclined from the lower end C of the central portion in front of the vehicle toward the side end portions LS and RS at the rear of the vehicle. The hit detour wind 83 can be distributed and flowed toward the respective side end portions LS and RS. By flowing along this inclined surface, the flow velocity of the detour wind 83 after hitting the protrusion 6 is unlikely to decrease. Therefore, since the air toward the LS and RS at each side end can flow vigorously, for example, in the case of complete cooling, the cold air from the cooling heat exchanger 3 is uniform in the vehicle width direction of the openings 21 and 23. In addition to being able to flow to the air, a predetermined air volume can be secured. Further, the temperature of the cold air blown from each outlet of the above-mentioned duct has little variation and tends to be a uniform temperature. Alternatively, for example, when intermediate temperature air is desired, when the detour air 83 merges with the warm air 84 in the air mix region 2M, it is easy to be mixed by utilizing the above-mentioned momentum, and the intermediate temperature air becomes an appropriate temperature. Can be uniformly flowed in the vehicle width direction of the openings 21 and 23, and it is easy to secure a predetermined air volume. It can be said that the upper region of the heating heat exchanger 4, which is the location where the protrusion 6 is arranged, is a portion where it is difficult to prevent the warm air 84 from flowing toward the air mix region 2M. Therefore, it is difficult for the protrusion 6 to reduce the flow velocity of the warm air 84, and from this, the above-mentioned mixing can be performed satisfactorily. As a result, the temperature of the intermediate temperature air blown from each outlet of the above-mentioned duct tends to be uniform with little variation. As described above, the protrusion 6 contributes to the improvement of the uniformity of the blowing temperature while reducing the increase in the pressure loss due to the above-mentioned decrease in the flow velocity. The protrusion 6 also contributes to improving the mixing property of the detour air 83 and the warm air 84.

"shape"
As a specific shape of the protrusion 6, a triangular pyramid-shaped inner substance can be mentioned as in this example. In FIG. 3, each surface forming the protrusion 6, specifically, the lower surface C-LS-RS arranged below the vehicle and serving as the installation surface for the heating heat exchanger 4, and the two front surfaces arranged in front of the vehicle. The case where the side surface T-C-LS, T-C-RS and the rear side surface T-LS-RS arranged at the rear of the vehicle are flat will be illustrated. Further, FIG. 3 illustrates a case where the rear side surface T-LS-RS is a plane parallel to the vehicle in the vertical direction. In this case, the region sandwiched between the rear side surface T-LS-RS of the protrusion 6 and the wall surface on the rear side of the vehicle in the case 2 tends to have a simple shape such as a rectangular shape in a plan view as shown in FIG. 3 (A). .. This region is a region forming a flow path of the warm air 84 (FIGS. 1 and 2), and can be said to have a shape that does not easily obstruct the flow of the warm air 84. As described above, the protrusion 6 is less likely to obstruct the flow of the warm air 84, secures a predetermined air volume, and easily enhances the mixing property.

"size"
The protrusion height h from the heating heat exchanger 4 at the protrusion 6 can be appropriately selected within a range that does not hinder the detour air 83 and the warm air 84 from flowing toward the upper side of the vehicle and does not cause excessive pressure loss. For example, the protrusion height h may be a size that hits the air (bypass wind 83) flowing through the cooling heat exchanger 3 when the opening degree of the door portion 5 is 50% or less. The protrusion height h satisfying this reference condition is defined as the position of the upper end portion T of the protrusion 6 in the vertical direction of the vehicle when the opening degree of the door portion 5 is 50%, as in this example shown in FIG. It can be mentioned that it is substantially equal to the position of the upper end edge of the door portion 5. The effect of the protrusion height h satisfying the above criteria will be described below.

First, a case where the opening degree of the door portion 5 exceeds 50% will be described. This case can be said to be a case where it is desired that the mixing ratio of the warm air 84 among the intermediate temperature air is relatively large from the fully heated state where the opening degree is 100%. In this case, it can be said that the air volume of the warm air 84 tends to be relatively large and the flow velocity of the warm air 84 tends to be relatively large. Therefore, in this case, even if there is no protrusion 6, the momentum of the warm air 84 is used to mix the detour wind 83 and the warm air 84, or the warm air 84 or the like is provided at each side end portion in the vehicle width direction. It is expected that the air-conditioning air 8 having a uniform temperature can be blown out from the opening 21 or the like in the vehicle width direction because it easily flows to the LS and RS sides.

On the other hand, when the opening degree of the door portion 5 is 50% or less, the mixing ratio of the warm air 84 among the intermediate temperature air is relatively small from the completely cooled state (FIG. 1) where the opening degree is 0%. It can be said that this is the case when you want to do that. In this case, it can be said that the air volume of the warm air 84 tends to be small and the flow velocity of the warm air 84 tends to be relatively small. In this case, if there is no protrusion 6, the detour air 83 and the warm air 84 may be mixed unevenly. On the other hand, if there is a protrusion 6 whose protrusion height h satisfies the above-mentioned reference condition, for example, when the opening degree shown in FIG. 2 is 30%, the protrusion 6 is arranged above the vehicle. The upper region including the upper end portion T can be exposed from the door portion 5, and the detour wind 83 can be applied to this exposed portion. When the detour wind 83 hits the exposed portion, it is uniformly distributed to the left and right in the vehicle width direction along the inclined surface as described above, and even if it is distributed, it can flow vigorously. Utilizing this momentum, the distributed detour air 83 and the warm air 84 can be mixed well, and the air conditioning air 8 having a uniform temperature can be blown out from the opening 21 or the like in the vehicle width direction. As the opening degree approaches 0%, the air volume of the detour wind 83 increases, but the exposed portion at the protrusion 6 also increases, so that the detour wind 83 can be satisfactorily distributed and the momentum of the distributed detour wind 83 is also large. Therefore, as the opening degree approaches 0%, the air volume of the warm air 84 decreases, but the air conditioning air 8 having a uniform temperature in the vehicle width direction can be mixed well with the detour air 83 as described above. It can be blown out. Further, the protruding height h can be set to a size that the detour wind 83 hits when the opening degree of the door portion 5 exceeds 50%, but if the protruding height h satisfies the above reference condition, the protruding portion 6 is large. Not too much, the flow path of the warm air 84 is appropriately secured, and the protrusion 6 is unlikely to obstruct the flow of the warm air 84. When the protrusion height h satisfies the above-mentioned reference condition, the above effects are obtained.

Hereinafter, the size along the vehicle width direction (vertical direction in FIG. 3A) is referred to as width, and the size along the vehicle front-rear direction (horizontal direction in FIG. 3A) is referred to as thickness.
The maximum width and the maximum thickness of the protrusion 6 can be appropriately selected within a range in which the detour wind 83 corresponding to the protrusion 6 can be appropriately distributed in the vehicle width direction and the flow velocity of the diversion wind 83 is not excessively reduced. For example, the maximum width can be equal to or greater than the width of the heating heat exchanger 4. FIG. 3A illustrates a case where the maximum width of the protrusion 6 (here, the distance between the left side end LS and the right side end RS) is larger than the width of the heating heat exchanger 4. do. When the maximum width of the protrusion 6 is adjusted according to, for example, the width of the opening 21 on the face side or the width of the opening 23 on the foot side, the temperature is adjusted to a uniform temperature from each outlet of the above-mentioned duct. It is easy to blow out the air conditioning wind 8. Further, when the maximum width of the protrusion 6 is a size corresponding to the width of the cooling heat exchanger 3, it is preferable that the detour wind 83 easily hits the protrusion 6 without excess or deficiency. The maximum thickness can be, for example, equal to or less than or greater than the thickness of the heating heat exchanger 4. FIG. 3A illustrates a case where the maximum thickness of the protrusion 6 (here, the distance between the lower end C and the upper end T) is slightly larger than the thickness of the heating heat exchanger 4.

《Arrangement》
The protrusion 6 is arranged above the heating heat exchanger 4. In particular, the protrusion 6 is arranged so that the ridge line connecting the lower end C and the upper end T of the central portion is located at the central portion in the width direction with respect to at least one of the opening 21 on the face side and the opening 23 on the foot side. Then, it is easy to blow out the conditioned air 8 having a uniform temperature in the vehicle width direction from the opening 21 or the like. As a result, it is easy to blow out the conditioned air 8 having a uniform temperature from each outlet of the above-mentioned duct. In addition, for example, when the ridgeline of the protrusion 6 is located at the center of the cooling heat exchanger 3 in the width direction, the detour wind 83 can be easily distributed uniformly.

"material"
Since the protrusion 6 is arranged close to the heat exchanger 4 for heating, it is preferably made of a material having excellent heat resistance. Further, it is also preferable that the protrusion 6 is made of a material that is difficult to transfer heat to some extent so that the temperature of the detour wind 83 that comes into contact with the protrusion 6 is difficult to change. Specific materials include various resins. A resin containing a heat-resistant material such as talc or glass fiber is superior in heat resistance and thermal insulation.

The protrusion 6 in this example is a member independent of the case 2. In this case, using a material such as the above-mentioned resin, it can be easily formed into a protrusion 6 having a predetermined shape and size. Such a protrusion 6 may be fixed to a heating heat exchanger 4 or the like by using an appropriate member such as a bolt and a nut.

(others)
The vehicle has a control unit (not shown) that controls the air conditioner 1 and an operation unit (not shown) such as a dial or a knob that issues a command to the control unit so that the occupant can achieve the desired air conditioning state. Be prepared. The control unit operates / stops the circulation of the refrigerant, adjusts the circulation amount, adjusts the opening degree of the door unit 5, and the like. In addition, known configurations can be referred to for the basic configuration of the vehicle air conditioner 1 and the above-mentioned control unit and operation unit.

(Main effect)
The vehicle air conditioner 1 of the first embodiment is provided with a protrusion 6 having a wind receiving surface 60 having a specific shape above the heat exchanger 4 for heating, thereby increasing the pressure loss by the above-mentioned functions and actions. While reducing the amount, the uniformity of the blowing temperature can be improved. For example, when the above-mentioned face ducts are provided with two outlets closer to the driver's seat side and two closer to the passenger seat side, for a total of four outlets, separated in the vehicle width direction, the vehicle air conditioner 1 of the first embodiment is provided. Can supply the conditioned air 8 having a uniform temperature from each outlet.

When the protruding height h of the protrusion 6 satisfies the above-mentioned reference condition as in this example, the blowing temperature is uniform, especially when the opening degree of the door 5 is 50% or less and an intermediate temperature air is desired. In addition, since the detour air 83 and the warm air 84 can be mixed well, the blowing temperature can be ensured according to the desired temperature of the occupant. Therefore, the vehicle air conditioner 1 is expected to be able to provide a more comfortable environment.

Further, as in this example, the protrusion 6 has a triangular pyramid shape, and the wind receiving surface 60 is continuously rearward of the vehicle from the lower end C of the central portion to the upper end T and each side end LS and RS. Since it is composed of a surface extending to, the detour wind 83 can be satisfactorily distributed while reducing the pressure loss. Further, when the protrusion 6 has a triangular pyramid shape, the flow of the warm air 84 is less likely to be obstructed and a predetermined air volume can be easily secured as compared with the case where the protrusion 6 is formed of a bent plate material or the like. Therefore, the mixing property of the detour wind 83 and the warm air 84 can be improved. Moreover, if the protrusion 6 has a triangular pyramid shape, a sufficient installation area can be secured, so that the stability of the installation state of the protrusion 6 is also excellent.

[Modification example]
At least one of the following modifications can be made to the vehicle air conditioner 1 of the first embodiment.
(1) The protrusion 6 is a triangular pyramid-shaped inner body, and at least one of the installation surface, the two front side surfaces, and the rear side surface is a curved surface or the like. For example, the inclined surface extends rearward of the vehicle from the lower end portion C of the central portion toward the upper end portion T and the side end portions LS and RS, and includes a curved surface having no ridge line in the central portion. ..
(2) The protrusion 6 is made of a plate material bent in a mountain fold instead of the triangular pyramid-shaped inner body. However, the lower end edges C-LS and C-RS are provided so that the upper end portion T of the central portion and the side end portions LS and RS are located behind the vehicle lower end portion C of the central portion.
(3) The protrusion 6 is integrally molded with the case 2. In this case, the number of assembled parts in the vehicle air conditioner 1 can be reduced.

1 Vehicle air conditioner 2 Cases, 20, 22 switching doors, 21, 23, 25 openings,
2M air mix area 3 Cooling heat exchanger 4 Heating heat exchanger 5 Door part 6 Protrusion part, 60 Wind receiving surface T Upper end part C Lower end part LS, RS Side end 7 Blower 8 Air conditioning wind, 83 Bypass wind, 84 Warm air

Claims (1)

It is a vehicle air conditioner that includes a blower, a heat exchanger for cooling, and a heat exchanger for heating, and these are collectively assembled in the center of the vehicle in the vehicle width direction.
A protrusion provided above the vehicle of the heating heat exchanger is provided.
The protrusion is in contact with a wind receiving surface that receives air flowing through the cooling heat exchanger arranged in front of the heating heat exchanger and warm air flowing through the heating heat exchanger. With sides ,
The wind receiving surface is for a vehicle including an inclined surface in which an upper end portion of a central portion in the vehicle width direction and each side end portion in the vehicle width direction of the protrusion are located behind the lower end portion of the central portion. Air conditioner.

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