WO2023112629A1

WO2023112629A1 - Vehicle air-conditioning device

Info

Publication number: WO2023112629A1
Application number: PCT/JP2022/043442
Authority: WO
Inventors: 圭司上村
Original assignee: サンデン株式会社
Priority date: 2021-12-15
Filing date: 2022-11-25
Publication date: 2023-06-22
Also published as: JP2023088503A

Abstract

[Problem] To improve the structure of a condensate-receiving surface in an air-conditioning case of a vehicle air-conditioning device so that condensate falling on the condensate-receiving surface can be smoothly led to a drain even when the vehicle body is inclined. [Solution] This vehicle air-conditioning device comprises a blower, a cooler that cools air to be blown into a vehicle cabin by the blower, and an air-conditioning case that houses the cooler, wherein the air-conditioning case comprises a condensate-receiving part with an inclined surface below the cooler in the direction of gravity and a drain that drains condensate received by the condensate-receiving part to the outside, and wherein the inclined surface of the condensate-receiving part slopes downward in the direction of gravity toward the drain and has a peaked part that protrudes upward in the direction of gravity in a cross section taken in the direction perpendicular to the ventilation direction of the air that passes through the cooler.　

Description

vehicle air conditioner

The present invention relates to a vehicle air conditioner.

A vehicle air conditioner is equipped with a unitized air conditioning system called HVAC (Heating, Ventilation, and Air Conditioning). The air is cooled or heated by the (evaporator) and the heater (condenser) and blown into the passenger compartment.

Inside the air conditioning case of a vehicle air conditioner, condensed water is generated when the air containing moisture comes into contact with the cooler. This condensed water drops downward from the cooler due to gravity, and is then discharged to the outside through a drain port formed at the bottom of the air conditioning case. At this time, a drainage structure has been proposed in which the condensed water is not scattered by air blowing.

In this drainage structure, a drain port is provided at the bottom of an air conditioning case that houses a cooler, and a condensed water receiving surface having a slope that slopes downward toward the drain port is formed below the cooler at the bottom of the air conditioning case. A plate-shaped guide member is arranged on the condensed water receiving surface and protrudes upward and extends in a direction perpendicular to the air blowing direction. A portion is provided (see Patent Document 1 below).

JP-A-11-291749

According to the conventional technology described above, in order to suppress the passage of the air through the gaps of the plate-shaped guide members, the wind passing through the gaps of one plate-shaped guide member hits the guide surface of the adjacent plate-shaped guide member. It's like For this reason, the flow of condensed water toward the drain port through the gap is once blocked by the guide surface of the adjacent plate-shaped guide member after passing through the gap of one plate-shaped guide member. .

Therefore, in order to smoothly guide the condensed water to the drain port, it is necessary to distribute the condensed water between the adjacent plate-shaped guide members in the direction along the plate-shaped guide members. cannot be greatly inclined in the direction along the plate-shaped guide member. However, when the inclination angle of the inclined surface along the plate-shaped guide member is made small, if the angle of the inclined surface with respect to the direction of gravity changes due to the inclination of the vehicle body, the condensed water that has passed through the gap will flow into the drain port. There may be cases where it becomes impossible to direct the flow.

The present invention has been proposed in order to cope with such circumstances. It is an object of the present invention to make it possible to flow

In order to solve such problems, the present invention has the following configurations.
A vehicular air conditioner comprising a blower, a cooler for cooling air blown into a vehicle interior by the blower, and an air conditioning case for housing the cooler, wherein the air conditioning case is arranged in the direction of gravity of the cooler. A condensed water receiving portion having an inclined surface and a drain port for draining the condensed water received by the condensed water receiving portion downward along the A vehicle characterized by having a mountain portion that is inclined downward along the direction of gravity toward the vehicle, and that has a cross section in a direction perpendicular to the ventilation direction of the air passing through the cooler and that is convex upward along the direction of gravity. air conditioner.

According to the vehicle air conditioner having such characteristics, by providing the above-described mountain portion on the inclined surface of the condensed water receiving portion, it is possible to form a steep slope along the ridge line of the mountain portion, thereby improving the vehicle body. Even when it is inclined, the condensed water received by the condensed water receiving portion can be smoothly guided to the drain port by the inclination.

BRIEF DESCRIPTION OF THE DRAWINGS The whole top view of the vehicle air conditioner which concerns on embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS The whole side view of the vehicle air conditioner which concerns on embodiment of this invention. Overall plan view of the lower case alone. The top view which showed the condensed water receiving part in a lower case. AA sectional view in FIG. BB sectional view in FIGS. 4 and 5. FIG. CC sectional view in FIGS. 4 and 5. FIG. DD sectional view in FIGS. 4 and 5. FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same reference numerals in different figures denote portions having the same function, and duplication of description in each figure will be omitted as appropriate. As an example, the arrows shown in the drawing are: arrow X1 toward the front of the vehicle; arrow X2 toward the rear of the vehicle; arrows Y1 and Y2 toward the width of the vehicle; arrow Z1 toward the direction of gravity; Each pointing downward along the direction.

As shown in FIGS. 1 and 2 , the vehicle air conditioner 1 includes a blower 2 and an air conditioning case 3 . In the illustrated example, the air conditioning case 3 is divided into a blower case 3A housing the blower 2, a first upper case 3B, a second upper case 3C, and a lower case 3D.

A cooler 4 that cools the air sent by the blower 2 and a heater core 5 that heats the sent air are arranged inside the air conditioning case 3 as described above. Inside the air-conditioning case 3, a wind direction switching device or a wind blocking device (not shown) is arranged.

The cooler 4 and the heater core 5 are heat exchangers. For example, the evaporator (heat absorber) in the heat pump cycle can be the cooler 4 and the condenser (radiator) can be the heater core 5 . In addition, the cooler 4 and the heater core 5 can be used as heat exchangers in a heat medium circuit through which cold water or hot water flows. When only cooling is performed, the heater core 5 can be omitted and only the cooler 4 can be used.

The air-conditioning case 3 is provided with

appropriate outlets

3E, 3F, and 3G. The air outlet 3E is, for example, a defroster outlet for clearing the windshield, the air outlet 3F is a face outlet that blows air toward the face of the occupant, and the air outlet 3F is a foot air outlet that blows air at the feet of the occupant. is.

Within the air-conditioning case 3, the wind direction W1 in the arrow Y2 direction blown from the blower 2 is changed substantially at right angles to the direction of the arrow X2 like the wind direction W2 shown in the drawing. The air in the wind direction W2 is cooled by passing through the cooler 4 and heated by passing through the heater core 5 . Here, the air passing through the cooler 4 is ventilated in the direction of the arrow X2. become.

The lower case 3D of the air conditioning case 3 will be specifically described below with reference to FIGS. 3 to 8. FIG. As shown in FIG. 3, the lower case 3D has a blower section 3D1 positioned below the blower 2 and an air conditioning section 3D2 in which the cooler 4 and the heater core 3 are arranged. A condensed water receiving portion 6 is provided for receiving condensed water generated when the contained air comes into contact with the cooler 4 . A mouth 7 is provided.

As shown in FIGS. 4 and 5, the condensed water receiver 6 is provided below the cooler 4 along the direction of gravity to receive condensed water generated in the cooler 4 . Also, in the illustrated example, the drain port 7 is provided upstream of the condensed water receiving portion 6 in the aforementioned ventilation direction, but the position of the drain port 7 is not particularly limited to this. The condensed water receiving portion 6 has an inclined surface (receiving surface) 10 inclined downward in the direction of gravity toward the drain port 7 in order to flow received condensed water toward the drain port 7 in the condensed water receiving portion 6 . have.

In addition, the condensed water receiver 6 is provided with

partition walls

8 and 9. The

partition walls

8 and 9 are provided in the condensed water receiving portion 6 so as to extend in directions (directions of arrows Y1 and Y2 in the drawing) perpendicular to the ventilation direction (the direction of the arrow X2 in the drawing). It is partitioned into the upstream side and the downstream side in the ventilation direction described above. The

partition walls

8 and 9 divide the inclined surface 10 of the condensed water receiver 6 into three sections (first section 10A, second section 10B, and third section 10C). The three sections (the first section 10A, the second section 10B, and the third section 10C) are provided to extend in directions (the directions of the arrows Y1 and Y2 in the drawing) perpendicular to the ventilation direction described above.

The

partition walls

8 and 9 are provided with communicating

portions

8A and 9A that allow the inclined surface 10 to communicate with the upstream side and the downstream side in the ventilation direction described above. Communicating

portions

8A and 9A are channels for flowing condensed water received on inclined surfaces 10 toward drain port 7, and inclined surface 10 passing through communicating

portions

8A and 8B as a whole serves as the above-described ventilation channel. It slopes downward along the direction of gravity from the downstream side to the upstream side of the direction.

In addition,

support projections

8B and 9B that support the lower end of the cooler 4 are provided on the tops of the

partition walls

8 and 9. By providing

such support projections

8B and 9B, wind (air) passing below the cooler 4 can be suppressed.

The first section 10A formed on the upstream side of the partition wall 8 in the ventilation direction described above is a section in which the drain port 7 is formed. The inclined surface 10 in the first section 10A has steep

inclined surfaces

11 and 12 that become lower toward the drain port 7 as shown in FIG. is formed. In addition, a gentle slope is formed on the outer side of the inclined surface 11 (the side away from the drain port 7).

The second section 10B is a section between the partition wall 8 and the partition wall 9, and as shown in FIG. It has one peak portion 20 and two

valley portions

21 and 22 formed by the peak portion 20 . The peak 20 is an upwardly convex inclined surface 10 along the direction of gravity, and the

valleys

21 and 22 are downwardly convex inclined surfaces 10 along the direction of gravity.

An inclined surface 23 that becomes lower toward the valley portion 21 and an inclined surface 24 that becomes lower toward the valley portion 22 are formed on the peak portion 20, and the direction away from the drain port 7 from the valley portion 21 (shown by the arrow in the figure) In the Y2 direction), an inclined surface 25 that gradually rises in that direction is formed, and in the direction away from the valley portion 22 from the drain port 7 (illustrated arrow Y1 direction), it gradually rises in that direction. An inclined surface 26 is formed. Here, all of the inclined surfaces 23 to 26 have the same steepness as the inclined surface 11 in the first section 10A.

Further, the communicating portion 8A of the partition wall 8 is provided at a position corresponding to the

valley portions

21 and 22, and the

valley portions

21 and 22 are formed with an inclination to allow the condensed water to flow toward the communicating portion 8A. . As a result, the condensed water accumulated in the

valleys

21 and 22 flows down to the first section 10A through the communication portion 8A.

The third section 10C is a section on the downstream side of the partition wall 9 in the above-described ventilation direction, and as shown in FIG. , and has one peak portion 30 and two

valley portions

31 and 32 formed by the peak portion 30 . The peak 30 is an upwardly convex inclined surface 10 along the direction of gravity, and the

valleys

31 and 32 are downwardly convex inclined surfaces 10 along the direction of gravity.

An inclined surface 33 that becomes lower toward the valley portion 31 and an inclined surface 34 that becomes lower toward the valley portion 32 are formed on the peak portion 30, and the direction away from the drain port 7 from the valley portion 31 (the arrow in the figure) In the Y2 direction), an inclined surface 35 that gradually rises in that direction is formed, and in the direction away from the valley portion 32 from the drain port 7 (indicated by the arrow Y1 direction), it gradually rises in that direction. An inclined surface 36 is formed. Here, the inclined surfaces 33 to 36 have an inclination angle that allows the condensed water to flow sufficiently even if the inclination of the vehicle is taken into consideration.

In addition, the communicating portion 9A of the partition wall 9 is provided at a position corresponding to the

valley portions

31 and 32, and the

valley portions

31 and 32 are formed with an inclination that allows condensed water to flow toward the communicating portion 9A. As a result, the condensed water accumulated in the

valleys

31 and 32 flows down to the second section 10B through the communicating portion 9A.

Thus, the inclined surface 10 has a plurality of

troughs

21, 22, 31, 32. Of the plurality of

troughs

21, 22, 31, 32, those farther from the drain port 7 are the drain ports. It is positioned higher along the direction of gravity than those close to 7. As a result, the condensed water accumulated in each of the

valleys

21, 22, 31, 32 smoothly flows toward the drain port 7 through the communicating

portions

8A, 9A.

In addition, the plurality of

partition walls

8 and 9 provided along the ventilation direction described above have a width of the communication portion 9A provided in the partition wall 9 on the downstream side in the ventilation direction described above, so that the width of the communication portion 9A provided on the upstream side in the ventilation direction described above is It is larger than the width of the communicating portion 8A provided in the partition wall 8. According to this, by narrowing the width of the communicating portion 8A of the partition wall 8 on the upstream side in the ventilation direction, the wind passing under the cooler 4 can be effectively suppressed.

Further, by widening the width of the communicating portion 9A of the partition wall 9 on the upstream side in the ventilation direction, the wind speed passing through the communicating portion 9A is suppressed to be low even when there is wind flowing through the communicating portion 9A. As a result, it is possible to prevent the condensed water accumulated in the condensed water receiving portion 6 from scattering due to air blowing. In addition, by narrowing the width of the communicating portion 8A, the wind speed of the wind passing through the communicating portion 9A can be suppressed to a lower level. can be effectively deterred.

At this time, the position of the communicating portion 8A provided in the partition wall 8 is shifted in the direction orthogonal to the ventilation direction with respect to the position of the communicating portion 9A provided in the other partition wall 9 adjacent thereto. Therefore, the path of the air from the communicating portion 9A to the communicating portion 8A can be bent, and the momentum of the wind can be further reduced, so that the condensed water accumulated in the condensed water receiving portion 6 can be more effectively scattered by the blowing air. You can prevent it from happening.

Thus, in the vehicle air conditioner 1 according to the embodiment of the present invention, by providing the

ridges

20 and 30 on the inclined surface 10 of the condensed water receiving portion 6, steep air conditioners along the ridgelines of the

ridges

20 and 30 are provided. A slope can be formed, and the condensed water remaining on the leeward side of the

partition walls

8 and 9 can be smoothly guided to the drain port 7 . Furthermore, even when the vehicle body is tilted, the condensed water is prevented from remaining at a position away from the drain port 7, and the condensed water received by the condensed water receiving part 6 is smoothly guided to the drain port 7 by the tilt. be able to.

When the

mountain portions

20 and 30 described above are provided on the inclined surface 10, the

valley portions

21, 22, 31 and 32 are formed by the

mountain portions

20 and 30. At this time, since the heights of the

valleys

21, 22, 31, 32 are successively lowered toward the drain port 7, the flow of condensed water does not stop at the

valleys

21, 22, 31, 32.

Further, the vehicle air conditioner 1 according to the embodiment of the present invention is provided with the

partition walls

8 and 9, and the

partition walls

8 and 9 are provided with the communicating portions 8A and 9A. , 22, 31, and 32, the

partition walls

8 and 9 suppress the wind passing through the condensed water receiving portion 6, and the scattering of the condensed water received by the condensed water receiving portion 6 is suppressed. The flow of condensed water can be ensured by the

crests

20, 30 and the

troughs

21, 22, 31, 32 formed thereon. In the illustrated example, the

partition walls

8 and 9 are provided.

Although the blower 2 is arranged on the windward side of the cooler 4 in the above-described embodiment, the arrangement is not limited to this, and the blower 2 may be arranged on the leeward side of the cooler 4 . Moreover, in the above-described embodiment, the drain port 7 is provided on the windward side of the condensed water receiving portion 6 , but the present invention is not limited to this, and the drain port 7 may be provided on the leeward side of the condensed water receiving portion 6 . In that case, the relationship between the widths of the communicating portion 8A and the communicating portion 9A can be the same as in the example described above, with the width being narrower on the windward side and wider on the leeward side. Furthermore, in the above-described embodiment, one

mountain portion

20, 30 is provided in each of the second section 10B and the third section 10C, but not limited to this, a plurality of mountain portions may be provided.

Although the embodiments of the present invention have been described in detail above with reference to the drawings, the specific configuration is not limited to these embodiments, and design modifications and the like are made within the scope of the present invention. is included in the present invention. In addition, each of the above-described embodiments can be combined by diverting each other's techniques unless there is a particular contradiction or problem in the purpose, configuration, or the like.

1: vehicle air conditioner, 2: blower, 3: air conditioning case, 3A: blower case,
3B: first upper case, 3C: second upper case, 3D: lower case,
3D1: air blower, 3D2: air conditioner, 3E, 3F, 3G: outlet,
4: cooler, 5: heater core, 6: condensed water receiver, 7: drain port,
8, 9: partition wall, 8A, 9A: communication portion, 8B, 9B: support projection,
10, 11, 12: inclined surface,
10A: first section, 10B: second section, 10C: third section,
20, 30: peaks, 21, 22, 31, 32: valleys,
23, 24, 25, 26, 33, 34, 35, 36: Inclined surface

Claims

A vehicle air conditioner comprising a blower, a cooler for cooling air blown into a vehicle interior by the blower, and an air conditioning case for housing the cooler,
The air conditioning case includes a condensed water receiving portion having an inclined surface downward along the direction of gravity of the cooler, and a drain port for draining the condensed water received by the condensed water receiving portion to the outside,
The inclined surface of the condensed water receiving portion is inclined downward in the direction of gravity toward the drain port, and upward in the direction of gravity in a cross section in a direction perpendicular to the ventilation direction of the air passing through the cooler. An air conditioner for a vehicle, characterized in that it has a convex mountain portion.
the inclined surface is inclined downward in the direction of gravity from the downstream side to the upstream side in the ventilation direction;
2. The vehicle air conditioner according to claim 1, wherein the drain port is provided on the upstream side in the ventilation direction of the condensed water receiving portion.
The inclined surface includes a plurality of troughs formed by the peaks, and the troughs farther from the outlet are higher than the troughs closer to the outlet along the direction of gravity. 3. The vehicle air conditioner according to claim 1, wherein the vehicle air conditioner is located at
The condensed water receiving portion includes a partition wall extending orthogonally to the airflow direction and separating an upstream side and a downstream side of the inclined surface in the airflow direction,
The partition wall is provided with a communicating portion that allows the inclined surface to communicate between the upstream side and the downstream side in the ventilation direction,
4. The vehicle air conditioner according to claim 1, wherein the communicating portion is provided at a position corresponding to a valley formed by the peak.
A plurality of partition walls are provided along the ventilation direction,
5. A width of the communicating portion provided in the partition wall on the downstream side in the airflow direction is larger than a width of the communicating portion provided in the partition wall on the upstream side in the airflow direction. A vehicle air conditioner as described.
The position of the communicating portion provided in one of the partition walls is shifted in a direction orthogonal to the ventilation direction with respect to the position of the communicating portion provided in the other partition wall adjacent thereto. 6. A vehicle air conditioner according to claim 4 or 5.