JP2022018417A - Air conditioner for vehicle - Google Patents

Abstract

To provide an air conditioner for a vehicle, in which a ratio of ventilation toward a central aperture and an outside aperture is freely adjusted according to an opening of a mode switching door, and a ventilation temperature difference between the central aperture and the outside aperture is restricted.SOLUTION: A vent blowing port 28 of an air conditioner for a vehicle includes: a center aperture 34 open to a width direction center; and a pair of side apertures 36a, 36b arranged outside in the width direction of the center aperture 34. Further, a door part 74 of a vent door 54 for opening and closing the vent blowing port 28 includes: a door 76 for the center for opening and closing the center aperture 34; and a pair of doors 78a, 78b for the sides for opening and closing the side apertures 36a, 36b provided at both ends in an axis direction of a rotary shaft 72. In addition, on the doors 78a, 78b for the sides, guide parts 88a, 88b are provided for guiding air in an air conditioning case 14 from sides of the side apertures 36a, 36b to a center aperture 34 side, in an open state where the vent door 54 rotates and the vent blowing port 28 is open.SELECTED DRAWING: Figure 6

Description

The present invention relates to a vehicle air conditioner mounted on a vehicle and whose temperature is adjusted by a cooler and a heater in the air conditioner case to be blown into the vehicle interior.

Conventionally, in a vehicle air conditioner mounted on a vehicle, cold air is blown from a vent air outlet opened above the air conditioner case toward the vicinity of the occupant's face in the vehicle interior.

For example, in the vehicle air conditioner disclosed in Patent Document 1, the vent outlet portion opened at the upper part of the air conditioner case has a center vent opening provided near the center in the width direction and a center vent opening adjacent to the center vent opening in the width direction. It is equipped with a set of side vent openings provided on the side. Then, the center vent opening communicates with the center vent outlet grill provided on the center side of the front seat in the vehicle interior, and the side vent opening is a set of side vent outlet grills on the side in the width direction on the driver's seat side and the passenger seat side. Communicate with.

On the other hand, inside the air-conditioning case, a vent door is freely opened and closed so as to face the vent outlet, and the vent door has a center vent opening / closing portion facing the center vent opening and a side vent opening / closing portion facing the side vent opening. By rotating the vent door, the opening degree of the center vent opening and the opening degree of the side vent opening are adjusted.

Japanese Unexamined Patent Publication No. 2019-209869

In the vehicle air conditioner as described above, the temperature of the air blown from the center vent opening and the temperature of the air blown from the side vent opening may vary, and the amount of air blown from the center vent opening may vary. There is a demand to reduce the variation in the ventilation temperature by freely adjusting the amount of ventilation from the side vent opening.

On the other hand, in the vehicle air conditioner of Patent Document 1 described above, the amount of air blown from the center vent opening and the amount of air blown from the side vent opening cannot be freely adjusted according to the opening degree of the vent door. When cold air is blown to the front seats in the vehicle interior through the blowout portion, there is a problem that the blowing temperature differs between the center in the width direction and the side in the width direction.

The present invention has been made in consideration of the above-mentioned problems, and the air-conditioning ratio to the central opening and the outer opening can be freely adjusted according to the opening of the mode switching door, and the central opening and the outer opening can be freely adjusted. It is an object of the present invention to provide an air conditioner for a vehicle capable of suppressing a difference in air blast temperature between the air conditioner and the air conditioner.

In order to achieve the above object, the embodiments of the present invention include an air conditioning case having an air-flowing passage inside, a cooler and a heater housed inside the air-conditioning case so as to face the passage, and air conditioning. In a vehicle air conditioner equipped with a mode switching door that opens and closes at the top of the case to open and close the opening that connects the vehicle interior and the passage.
The openings are partitioned in the width direction orthogonal to the air flow direction, and a set of outer openings arranged on the outer side in the width direction, and a central opening provided between one outer opening and the other outer opening. Has a part and
The mode switching door includes a rotating shaft extending along the width direction and rotatably supported with respect to the air conditioning case, and a door portion extending in a direction orthogonal to the axial direction with respect to the rotating shaft.
The door portion consists of a central opening door that opens and closes the central opening, and a set of outer opening doors that are provided on both ends in the axial direction of the rotating shaft and open and close the outer opening.
The outer opening door is provided with a guide portion that guides the air in the air conditioning case to the central opening side in the open state in which the opening is opened by the mode switching door.

According to the present invention, an opening of an air conditioner case constituting a vehicle air conditioner is partitioned in a width direction orthogonal to the air flow direction, and a set of outer openings arranged outside in the width direction and one outside. It has a central opening provided between the opening and the other outer opening, while a mode switching door that can open and close the opening extends along the width direction and rotatably supports the air conditioning case. It is provided with a rotation axis to be formed and a door portion extending in a direction orthogonal to the axis direction with respect to the rotation axis. The door portion is composed of a central opening door that opens and closes the central opening, and a set of outer opening doors that are provided at both ends in the axial direction of the rotating shaft to open and close the outer opening. Is provided with a guide portion that guides the air in the air conditioning case to the central opening side in the open state where the opening is opened by the mode switching door.

Therefore, when air is blown into the vehicle interior through the opening, a part of the air originally blown from the outer opening to the vehicle interior by the guide portion provided on the outer opening door is directed to the central opening side. By guiding and blowing air, it is possible to increase the amount of air blown from the central opening to the passenger compartment.

As a result, the amount of air supplied to the central opening and the amount of air supplied to the outer opening can be freely adjusted according to the opening of the mode switching door. Therefore, it is possible to suppress the difference in air temperature between the air blown into the vehicle interior through the central opening and the air blown into the vehicle interior through the outer opening.

According to the present invention, the following effects can be obtained.

That is, when air is blown into the vehicle interior through the opening in the vehicle air conditioner, the air blown from the outer opening in the opening to the vehicle interior by the guide portion provided on the outer opening door of the mode switching door. By guiding a part of the air to the central opening side and blowing air, it is possible to freely adjust the amount of air blown from the central opening to the passenger compartment. Therefore, by freely adjusting the amount of air supplied to the central opening of the opening and the amount of air supplied to the outer opening according to the opening of the mode switching door, the central opening The difference in air temperature between the air blown into the vehicle interior through the portion and the air blown into the vehicle interior through the outer opening is preferably suppressed.

It is an overall sectional view of the air conditioner for vehicles which concerns on embodiment of this invention. FIG. 3 is a plan view of the vehicle air conditioner of FIG. 1 as viewed from the vent air outlet and the defroster air outlet side. 3A is an external perspective view of the vent door constituting the vehicle air conditioner of FIG. 1, and FIG. 3B is a plan view of the vent door shown in FIG. 3A. It is sectional drawing along the IV-IV line of FIG. FIG. 3 is an enlarged cross-sectional view showing an open state of a vent door in the vehicle air conditioner of FIG. 1. FIG. 5 is an enlarged plan view of a vent door and a blower guide in the vehicle air conditioner shown in FIG. 5 as viewed from above.

A preferred embodiment of the vehicle air conditioner according to the present invention will be described in detail below with reference to the accompanying drawings. In the following description, the right side (arrow A direction) of the vehicle air conditioner 10 shown in FIG. 1 will be the front side of the vehicle, and the left side (arrow B direction) will be the rear side of the vehicle.

As shown in FIG. 1, the vehicle air conditioner 10 includes an air conditioner case 14 constituting each air passage 12 and an evaporator (cooler) 16 disposed inside the air conditioner case 14 to cool the air. A heater core (heater) 18 for heating the air, a door mechanism 20 for switching the flow of air flowing in each of the passages, and a blower guide 22 arranged in the passage 12 to guide the flow of air. include.

As shown in FIGS. 1 and 2, the air conditioning case 14 is formed of a resin material and has a width direction (arrows C1 and C2 in FIG. 2) orthogonal to the front-rear direction (arrows A and B) of the vehicle. It is composed of first and second case portions 24 and 26 that can be divided into two parts. The first case portion 24 is provided on one side in the width direction (arrow C1 direction), and the second case portion 26 is provided on the other side in the width direction (arrow C2 direction). The vehicle air conditioner 10 is mounted so that the first case portion 24 is on the driver's seat side and the second case portion 26 is on the passenger seat side.

Further, in the upper part of the air conditioning case 14, a vent air outlet (opening) 28 that blows air near the face of the occupant in the front seat in the vehicle interior and an air blower near the front window of the vehicle adjacent to the vent air outlet 28 are blown. The defroster blower port 30 to be performed is open. The vent air outlet 28 and the defroster air outlet 30 are opened along the width direction (arrows C1 and C2 directions) of the air conditioning case 14 so as to straddle the first and second case portions 24 and 26, respectively. Further, as shown in FIG. 1, on the rear side of the vehicle (in the direction of arrow B) of the air-conditioning case 14, a foot air outlet 32 that extends downward and opens to blow air near the feet of the occupant is formed. Will be done.

As shown in FIG. 2, the vent air outlet 28 has a center opening (center opening) 34 provided in the center in the width direction, and one end side (arrow C1 direction) and width in the width direction with respect to the center opening 34. It is composed of a pair of side openings (outer openings) 36a and 36b provided on the other end side in the direction (direction of arrow C2). When the air conditioning case 14 shown in FIG. 2 is viewed from above, the side openings 36a and 36b are opened in a substantially rectangular cross section, and the center opening 34 is in the width direction (arrow) with respect to the side openings 36a and 36b. It is formed in a substantially rectangular shape with a long cross section in the C1 and C2 directions).

Further, the vent air outlet 28 is provided with a partition portion 38 extending in the front-rear direction (arrows A and B directions) of the vehicle between the pair of side openings 36a and 36b and the center opening 34, respectively. The openings 36a and 36b and the center opening 34 are divided in the width direction (arrows C1 and C2 directions). That is, the vent air outlet 28 is divided into three openings along the width direction, and the center opening 34 is formed so as to straddle the first case portion 24 and the second case portion 26.

The vent air outlet 28 is a center outlet (not shown) opened at a position where the center opening 34 faces the vicinity of the occupant's face between the driver's seat and the passenger seat in the passenger seat through a duct (not shown). On the other hand, the side openings 36a and 36b are connected to and communicate with side outlets (not shown) opened in the vicinity of the side windows on the driver's seat side and the passenger's seat side, respectively. ing.

On the other hand, as shown in FIG. 1, an evaporator 16 is provided inside the air conditioning case 14 at a position on the front side of the vehicle (direction of arrow A), and the upper end portion and the lower end portion of the evaporator 16 are held. ing. Further, a heater core 18 is provided on the vehicle rear side (direction of arrow B) on the downstream side of the evaporator 16, and the upper end portion and the lower end portion of the heater core 18 are held with respect to the air conditioning case 14.

Further, inside the air conditioning case 14, there is a cold air passage 44 provided on the front side of the vehicle (in the direction of arrow A) and where the evaporator 16 is arranged, and warm air formed on the downstream side of the cold air passage 44 and arranged with the heater core 18. The passage 46, the bypass passage 48 bypassing the heater core 18 on the downstream side of the cold air passage 44, and the mixing portion 50 in which the cold air flowing through the cold air passage 44 and the hot air flowing through the hot air passage 46 are mixed. include.

The door mechanism 20 includes an air mix door 52 provided between the evaporator 16 and the heater core 18, a vent door (mode switching door) 54 for opening and closing the vent air outlet 28, and a defroster door 56 for opening and closing the defroster air port 30. It has a foot door 60 that opens and closes a heat opening 58 that communicates with the foot air outlet 32.

The air mix door 52 is formed of, for example, a plate having an arcuate cross section curved with a large radius, and is formed so as to be gently convex in a direction away from the evaporator 16, that is, toward the heater core 18 side (arrow B direction). At the same time, it is formed with a predetermined width along the width direction (arrows C1 and C2 directions) of the air conditioning case 14.

Further, the air mix door 52 is guided along the guide rails 62 provided on the side walls 24a and 26a in the width direction of the air conditioning case 14, and the rack gear 64 is provided on the inner peripheral surface facing the evaporator 16. Then, the rack gear 64 is meshed with the pinion gear 68 of the shaft 66 supported by the air conditioning case 14, so that the air mix door 52 slides up and down along the guide rail 62 under the rotational action of the shaft 66. ..

Further, a pair of sealing members 70 are provided at both ends of the air mix door 52 along the sliding direction at portions protruding toward the heater core 18 side (arrow B direction) so as to face the guide rail 62. The seal is made by contacting the wall.

As shown in FIGS. 1 to 6, the vent door 54 has a rotating shaft 72 extending along the width direction (arrows C1, C2 direction, axial direction) of the air conditioning case 14 and an axis line with respect to the rotating shaft 72. A door portion 74 that extends to the outer peripheral side orthogonal to and opens and closes the vent air outlet 28 is provided, and both ends in the width direction of the rotation shaft 72 are side walls 24a in the width direction of the first and second case portions 24 and 26. , 26a are rotatably supported, respectively.

As shown in FIGS. 2 to 6, the door portion 74 has a center door (center opening door) 76 provided at the center of the rotation shaft 72 in the axial direction, and the rotation shaft adjacent to the center door 76. A pair of side doors (outer opening doors) 78a and 78b provided on both end sides (arrows C1 and C2 directions) of 72 in the width direction are provided. When the vent door 54 is mounted inside the air conditioning case 14, the center door 76 faces the center opening 34 so as to be openable and closable, and the side doors 78a and 78b face the side openings 36a and 36b, respectively. It is arranged so that it can be opened and closed freely.

The center door 76 includes two first and second opening / closing plates 80 and 82 extending in a direction away from each other with the rotating shaft 72 in between. The first and second opening / closing plates 80 and 82 are formed in a long rectangular shape and a plate shape along the axial direction of the rotating shaft 72 (arrows C1 and C2 directions), respectively, and the first opening / closing plate 80 rotates. The second opening / closing plate 82 is formed so as to be on the vehicle rear side (arrow B direction) with respect to the shaft 72 and on the vehicle front side (arrow A direction) with respect to the rotating shaft 72.

Then, when viewed from the axial direction of the rotating shaft 72 shown in FIGS. 1 and 5, the first opening / closing plate 80 and the second opening / closing plate 82 are arranged so as to be substantially linear with the rotating shaft 72 interposed therebetween. .. Further, a door seal 84a is attached to the lower surface of the first opening / closing plate 80 and the upper surface of the second opening / closing plate 82 so as to cover the entire surface thereof. The door seal 84a is formed of an elastic material such as urethane into a sheet having a predetermined thickness.

The side doors 78a and 78b extend toward the front side of the vehicle (in the direction of arrow A) with respect to the rotating shaft 72, and are formed so as to be adjacent to the widthwise ends of the second opening / closing plate 82 of the center door 76. With respect to the third opening / closing plate (opening / closing surface) 86 formed in a long rectangular shape and a plate shape along the axial direction (arrows C1 and C2 directions) of the rotating shaft 72, and the third opening / closing plate 86. It is provided with guide portions 88a and 88b provided so as to project. The side doors 78a and 78b are formed in the same shape at both ends of the rotating shaft 72 in the axial direction.

Unlike the center door 76, the side doors 78a and 78b do not have an opening / closing plate extending to the rear side of the vehicle (direction of arrow B) and extend to the front side of the vehicle (direction of arrow A). It has a cantilever structure having only the third opening / closing plate 86.

The third opening / closing plate 86 is formed so as to be substantially flush with the second opening / closing plate 82 of the center door 76 when viewed from the axial direction of the rotation shaft 72 shown in FIGS. 1 and 5, and the rotation thereof. The extending length in the direction orthogonal to the axis 72 (direction of arrow A) is formed to be shorter than that of the second opening / closing plate 82 (see FIG. 3B).

The guide portions 88a and 88b are provided at the center side in the width direction of the third opening / closing plate 86, that is, at the inner end in the width direction which is the center door 76 side, and are provided upward with respect to the upper surface of the third opening / closing plate 86. The third guide wall 90 is provided with an erected first guide wall 90 and a second guide wall 92 connected to the upper end of the first guide wall 90 and extending in the axial direction (arrows C1 and C2 directions) of the rotating shaft 72. The opening / closing plate 86 side is formed so as to open. Further, as shown in FIGS. 2 to 4, one guide portion 88a and the other guide portion 88b are formed so as to have a symmetrical shape with respect to the center in the width direction of the vent door 54.

As shown in FIGS. 2 to 6, the first guide wall 90 is provided at a position separated by a predetermined distance from the inner end in the width direction of the third opening / closing plate 86 to the outside in the width direction, and the third opening / closing plate 86 is opened / closed. It is formed so as to gradually incline toward the inside in the width direction (center door 76 side) as it is separated from the connection portion with respect to the plate 86, and the rotation shaft 72 is formed from the extending direction end portion 86a of the third opening / closing plate 86. It is formed so as to gradually incline toward the inside in the width direction (center door 76 side) toward the side. That is, the first guide wall 90 is formed in the third opening / closing plate 86 so as to be tapered from the extending direction end portion 86a to the rotation shaft 72 side and inward in the width direction.

Further, as shown in FIGS. 1 and 5, the height of the first guide wall 90 with respect to the third opening / closing plate 86 is directed from the extending direction end portion 86a of the third opening / closing plate 86 toward the rotation shaft 72 side. It is formed so as to gradually decrease.

As shown in FIGS. 1 to 6, the second guide wall 92 is formed, for example, in a triangular cross-section that gradually tapers inward in the width direction with respect to the upper end of the first guide wall 90, and one side thereof. Is connected to the first guide wall 90, and the remaining two sides are formed so as to be substantially parallel to the extending direction of the third opening / closing plate 86 and the axial direction of the rotation axis 72 (arrows C1 and C2 directions). .. Further, the second guide wall 92 is connected to the upper end of the first guide wall 90 and is inclined toward the third opening / closing plate 86 side toward the rotation shaft 72 side in the extending direction of the side doors 78a and 78b. (See FIGS. 1 and 5).

As a result, the guide portions 88a and 88b are opened on the extending direction end portion 86a side and the third opening / closing plate 86 side at the inner end in the width direction of the third opening / closing plate 86, and are widened by the first guide wall 90. It has a guide passage 94 inside, which is covered on the outside in the direction and covered on the upper side by the second guide wall 92.

As shown in FIGS. 1 and 5, the defrost door 56 is orthogonal to the first shaft portion 96 supported by the widthwise side walls 24a and 26a of the air conditioning case 14 and the first shaft portion 96 in the axial direction. It has a set of first open / close doors 98 that project so as to. The defroster door 56 is rotatably provided inside the air conditioning case 14 at a position facing the defroster air outlet 30 via the first shaft portion 96, and abuts on the inner wall of the air conditioning case 14 in the first opening / closing door 98. A door seal 84b is attached to the surface.

The foot door 60 includes a second shaft portion 100 supported by the widthwise side walls 24a and 26a of the air conditioning case 14, and a second opening / closing door 102 projecting so as to be orthogonal to the axial direction with respect to the second shaft portion 100. Have. The foot door 60 is rotatably provided inside the air conditioning case 14 at a position facing the heat opening 58 via the second shaft portion 100, and a door seal 84c is attached to the lower surface of the second opening / closing door 102. ing.

As the door seals 84b and 84c described above, for example, the same door seals 84a as the vent door 54 are used.

As shown in FIGS. 1, 5 and 6, the blower guide 22 is formed of, for example, a resin material, and is connected to the guide main body 104 and one end of the guide main body 104. The second extending portion 108 connected to the other end of the guide main body 104, and the pair of cold air guide portions 110a provided in the first extending portion 106 to guide the cold air to the side openings 36a and 36b. , 110b and the like.

The blower guide 22 is arranged in the mixing portion 50 of the air conditioning case 14, and the one end side having the first extending portion 106 becomes the vehicle front side (direction of arrow A) and has the second extending portion 108. The other end side is arranged so as to be the rear side of the vehicle (direction of arrow B).

The guide main body 104 is composed of three guide pieces 112 (see FIG. 6) that are equally spaced in the width direction (arrows C1 and C2 directions) and have a height orthogonal to the width direction, and one end thereof. The portion is connected to the first extending portion 106, and the other end portion extends so as to be connected to the second extending portion 108. That is, the guide main body 104 divides the vicinity of the mixing portion 50 in the air conditioning case 14 in the width direction (in the direction of arrows C1 and C2 in FIG. 6) by the three guide pieces 112.

The first and second extension portions 106 and 108 have the same cross-sectional shape and extend along the width direction, and the first extension portion 106 extends to the inner wall of the air conditioning case 14 near the upper end of the guide rail 62. The second extending portion 108 is fixed to the holding portion that holds the upper end of the heater core 18.

The cold air guide portions 110a and 110b have, for example, a rectangular cross section and are formed so as to project diagonally toward the front of the vehicle by a predetermined length with respect to the first extending portion 106, and are formed on one end side in the width direction (arrow C1). (Direction) and the guide piece 112 arranged on the other end side in the width direction (arrow C2 direction) are adjacent to the outside in the width direction, respectively, and are arranged so as to face the side openings 36a and 36b of the vent air outlet 28 (direction) and the other end side in the width direction (arrow C2 direction). See FIG. 6). The cold air guide portions 110a and 110b are formed so as to have a symmetrical shape with respect to the center in the width direction of the blower guide 22.

Further, the cold air guide portions 110a and 110b are formed in a U-shaped cross section that opens downward, and their upper ends are arranged at positions on the vent door 54 on the upstream side of the guide portions 88a and 88b, respectively. That is, the cold air guide portions 110a and 110b are arranged on a line linearly connecting the downstream side of the evaporator 16 and the vent air outlet 28 in the mixing portion 50 of the air conditioning case 14, and the guide portions 88a and 88b in the vent door 54 are arranged. It is provided at a position on the extension line on the upstream side with respect to the above. In other words, the guide portions 88a and 88b of the vent door 54 are provided so as to face the downstream side of the cold air guide portions 110a and 110b.

The vehicle air conditioner 10 according to the embodiment of the present invention is basically configured as described above, and the operation and the effect thereof will be described next.

First, air is introduced to the upstream side of the evaporator 16 in the air conditioning case 14 by driving a blower (not shown) based on a control signal from a controller (not shown), and this air flows along the cold air passage 44 to drive the evaporator 16. It is cooled by passing through.

For example, in the heating mode in which air is blown to the vicinity of the feet of an occupant in the vehicle interior, as shown in FIG. 1, the vent air outlet 28 is blocked by the vent door 54, the defroster air port 30 is blocked by the defrost door 56, and the defroster air port 30 is blocked. The heat opening 58 is opened by the foot door 60. When the air mix door 52 is in the intermediate position, the cold air flowing from the cold air passage 44 to the bypass passage 48 and the hot air flowing through the hot air passage 46 and heated by the heater core 18 are arranged in the mixing unit 50. The air flows toward the blower guide 22 side, is mixed, and is blown as warm air into the vehicle interior through the foot blower port 32 from the heat opening 58 opened by the foot door 60 after the temperature is adjusted.

Further, in the heating mode described above, the vent air outlet 28 is blocked by the vent door 54, but the side openings 36a and 36b of the vent air outlet 28 are air-conditioned cases through the guide passages 94 of the pair of guide portions 88a and 88b. It communicates with the inside of 14. Therefore, a pair of side outlets (a pair of side outlets) in which a part of the cold air opens from the inside of the air conditioning case 14 to the driver's seat and the passenger's seat side in the passenger seat from the side openings 36a and 36b through the guide portions 88a and 88b (guide passage 94). (Not shown) is being blown to.

That is, the side openings 36a and 36b of the vent air outlet 28 are formed so that air can always flow into the vehicle interior through the guide portions 88a and 88b regardless of the open / closed state of the vent door 54.

Next, in the cooling mode in which the air is blown to the vicinity of the occupant's face in the vehicle, as shown in FIG. 5, the vent door 54 rotates around the rotation shaft 72, so that the side doors 78a and 78b have the side openings 36a. , 36b moves downward, the center door 76 moves upward (in the direction of arrow D) where the first opening / closing plate 80 is on the center opening 34 side, and the second opening / closing plate 82 is said. It moves downward (in the direction of arrow E) so as to be separated from the center opening 34, and the vent air outlet 28 is opened. On the other hand, the defroster door 56 closes the defroster air outlet 30, and the foot door 60 closes the heat opening 58.

Then, the air mix door 52 descends to block the upstream side of the heater core 18 and communicates with the bypass passage 48, and the cold air cooled through the evaporator 16 flows from the bypass passage 48 to the mixing portion 50. After flowing, it passes through the inside of the blower guide 22 and flows to the vent blower port 28.

Specifically, the cold air flowing near the center of the air conditioning case 14 in the width direction is guided toward the rear side of the vehicle (in the direction of arrow B) by the guide piece 112 of the blower guide 22, and is the center of the vent air outlet 28 opened in the center in the width direction. It is supplied from the opening 34 into the vehicle interior.

On the other hand, the cold air flowing near both ends in the width direction of the air conditioning case 14 is guided to the rear side of the vehicle (in the direction of arrow B) by the guide piece 112 on both ends in the width direction of the blower guide 22, and is directed to one end side and the other end side in the width direction. It is supplied to the pair of opened side openings 36a and 36b, and is also supplied to the side openings 36a and 36b through the cold air guide portions 110a and 110b.

At this time, as shown in FIGS. 5 and 6, since the guide portions 88a and 88b of the side doors 78a and 78b are arranged so as to face the upper ends of the cold air guide portions 110a and 110b, the cold air guide portions 110a are arranged. The cold air flowing downstream through the 110b circulates from the extending direction end 86a of the side doors 78a and 78b to the guide passages 94 of the guide portions 88a and 88b, respectively, and flows along the guide portions 88a and 88b. By flowing, it is gradually guided to the center side in the width direction. Then, as shown in FIG. 6, the cold air flowing through the guide passage 94 is led out from the end portion on the rotation shaft 72 side to the center opening 34, so that the center blow in the vehicle interior is blown through the center opening 34. It is supplied to the outlet (not shown) and blown.

That is, a part of the cold air that passes through the blower guide 22 and flows to the side openings 36a and 36b flows from the cold air guide portions 110a and 110b to the pair of guide portions 88a and 88b, and is deflected toward the center side in the width direction. It is blown from the center opening 34 into the vehicle interior.

Then, at the vent blower port 28, cold air guided by the guide piece 112 of the blower guide 22 and the guide portions 88a and 88b of the side doors 78a and 78b is supplied from the center opening 34 to a duct (not shown) in the vehicle interior. The cold air blown from the center outlet (not shown) located in the center in the width direction to the vicinity of the occupant's face, while the cold air supplied from the pair of side openings 36a and 36b to the duct (not shown) is in the passenger compartment. A cooling operation is performed in which air is blown from a pair of side outlets (not shown) arranged on the side in the width direction to the vicinity of the occupant's face.

As described above, in the present embodiment, the vent air outlet 28 is opened at the upper part of the air conditioning case 14 constituting the vehicle air conditioner 10, and the vent door 54 is openably and closably provided so as to face the vent air port 28. At the same time, the vent air outlet 28 has a center opening 34 opened in the center of the air conditioning case 14 in the width direction and a pair of sides opened outward in the width direction (arrows C1 and C2 directions) with respect to the center opening 34. It is provided with openings 36a and 36b.

Further, the vent door 54 extends along the width direction (arrows C1 and C2 directions) of the air conditioning case 14 and is rotatably supported by the rotating shaft 72 and the direction perpendicular to the axial direction with respect to the rotating shaft 72. A door portion 74 that extends is provided, and the door portion 74 opens and closes a center door 76 that opens and closes the center opening portion 34, and side openings 36a and 36b provided at both ends of the rotating shaft 72 in the axial direction. It consists of a set of side doors 78a and 78b. The side doors 78a and 78b are provided with guide portions 88a and 88b that guide the air in the air conditioning case 14 to the center opening 34 side in the open state in which the vent air outlet 28 is opened by the vent door 54. ..

Therefore, for example, in the cooling mode in which cold air is blown into the vehicle interior through the open vent air outlet 28, the guide portions 88a and 88b provided on the pair of side doors 78a and 78b originally provide the side openings 36a and 36b. It is possible to guide a part of the cold air blown from the vehicle interior to the center opening 34 side and blow it.

Therefore, the vent door 54 is provided with guide portions 88a and 88b for guiding a part of the cold air supplied to the side openings 36a and 36b to the center opening 34 side, and the shapes of the guide portions 88a and 88b are appropriately set. It is possible to increase the amount of cold air blown from the center opening 34 into the vehicle interior.

As a result, the amount of cold air supplied to the center opening 34 and the amount of cold air supplied to the side openings 36a and 36b can be freely adjusted according to the opening degree of the vent door 54. By adjusting the amount of air blown, the difference in air temperature between the cold air blown from the center opening 34 into the vehicle interior and the cold air blown from the side openings 36a and 36b into the vehicle interior is suppressed. It is possible to improve the comfort of the occupants in the room.

Further, in a closed state in which the vent air outlet 28 is closed by the vent door 54, guide portions 88a and 88b are provided on the third opening / closing plate 86 of the side doors 78a and 78b that close the side openings 36a and 36b, and the third opening / closing is provided. It is formed so as to be offset toward the side openings 36a and 36b with respect to the upper surface of the plate 86, and is provided on the inner end side in the width direction of the third opening / closing plate 86 on the center door 76 side.

Therefore, a part of the cold air flowing to the side openings 36a and 36b is suitably guided to the center door 76 side by the guide portions 88a and 88b, and the cold air is blown from the center opening 34 into the vehicle interior. It is possible to surely increase the amount of air blown.

Further, the guide portions 88a and 88b have a first guide wall 90 standing upward with respect to the side doors 78a and 78b of the vent door 54, and the first guide wall 90 separated from the side doors 78a and 78b. The first guide wall 90 is provided at the upper end of the side door 78a and 78b and includes a second guide wall 92 extending substantially in parallel with the side doors 78a and 78b. It is formed so as to be inclined toward the center door 76 adjacent to the rotation shaft 72 side (downstream side).

Therefore, the cold air flowing from the inside of the air conditioning case 14 to the positions facing the pair of side doors 78a and 78b flows along the guide portions 88a and 88b, so that the downstream side becomes the rotation shaft 72 side by the first guide wall 90. It is gradually guided toward the center door 76 side (inside in the width direction) and blown to the center opening 34. Further, by appropriately setting the inclination angle of the first guide wall 90, it is possible to freely adjust the amount of cold air blown from the side doors 78a and 78b to the center door 76 side (center opening 34). Is.

Furthermore, by changing the height of the guide portions 88a and 88b with respect to the side doors 78a and 78b along the extending direction of the third opening / closing plate 86 orthogonal to the axial direction of the rotating shaft 72, for example, the vent door 54 Only when is opened at a constant opening, it is possible to adjust the ratio of the amount of air blown to the center opening 34 and the side openings 36a and 36b (adjusting the air blowing temperature) constituting the vent air outlet 28, while the vent door. When the 54 is fully opened, it is possible to suppress the supply of cold air from the guide portions 88a and 88b to the center opening 34 side.

Therefore, by appropriately setting the heights of the guide portions 88a and 88b, the amount of air blown into the vehicle interior and the air temperature can be freely adjusted through the center opening 34 and the side openings 36a and 36b for each ventilation mode to the vehicle interior. It will be possible to adjust. Further, in the closed state where the vent door 54 closes the vent air outlet 28, the inside of the air conditioning case 14 and the side openings 36a and 36b are always communicated with each other through the guide passages 94 of the guide portions 88a and 88b to blow cold air into the vehicle interior. Since the air can be blown, the ratio of the amount of air blown through the center air outlet and the side air outlet and the air temperature are not affected in the closed state of the vent door 54.

Further, a blower guide 22 that guides the cold air that has passed through the evaporator 16 to the vent air outlet 28 in the mixing portion 50 of the air conditioning case 14 in which the cold air flowing through the cold air passage 44 and the hot air flowing through the hot air passage 46 are mixed. The guide portions 88a and 88b of the vent door 54 are provided at positions on the extension line on the downstream side of the cold air guide portions 110a and 110b in the blower guide 22.

Therefore, while the guide portions 88a and 88b can freely adjust the air blowing ratio to the center opening 34 and the side openings 36a and 36b in the vent air outlet 28, the evaporator 16 is opened when the vent door 54 is opened at a constant opening. The cold air that has been cooled by and passed through the cold air guide portions 110a and 110b of the blower guide 22 flows to the guide portions 88a and 88b of the vent door 54 arranged on the downstream side, so that the cold air can be suitably guided to the center opening 34. can. As a result, it is possible to freely adjust the temperature of the cold air blown from the center air outlet (not shown) and the side air outlet (not shown) into the vehicle interior.

It should be noted that the vehicle air conditioner according to the present invention is not limited to the above-described embodiment, and of course, various configurations can be adopted without departing from the gist of the present invention.

10 ... Vehicle air conditioner 14 ... Air conditioning case 20 ... Door mechanism 22 ... Blower guide 28 ... Vent air outlet 34 ... Center opening 36a, 36b ... Side opening 54 ... Vent door 72 ... Rotating shaft 74 ... Door part 76 ... For center Doors 78a, 78b ... Side doors 88a, 88b ... Guide section 90 ... First guide wall 92 ... Second guide wall 94 ... Guide passages 110a, 110b ... Cold air guide section

Claims (6)

An air-conditioning case having a passage through which air flows, a cooler and a heater housed inside the air-conditioning case so as to face the passage, and an interior of the vehicle opened at the upper part of the air-conditioning case. In a vehicle air conditioner provided with a mode switching door that can open and close the opening that communicates with the passage.
The opening is partitioned in a width direction orthogonal to the air flow direction and is provided between a set of outer openings arranged outside the width direction and between one outer opening and the other outer opening. Has a central opening and
The mode switching door includes a rotation axis extending along the width direction and rotatably supported with respect to the air conditioning case, and a door portion extending in a direction orthogonal to the axis direction with respect to the rotation axis. Equipped with
The door portion includes a central opening door that opens and closes the central opening, and a set of outer opening doors that are provided on both ends in the axial direction of the rotating shaft and open and close the outer opening.
The vehicle air-conditioning device includes a guide portion for guiding the air in the air-conditioning case toward the central opening side in the open state in which the opening is opened by the mode switching door. In the vehicle air conditioner according to claim 1,
The guide portion is provided on the opening / closing surface that closes the outer opening in the closed state of the mode switching door, is formed so as to be offset toward the opening side with respect to the opening / closing surface, and is formed at the center of the opening / closing surface. A vehicle air conditioner installed at the position on the opening door side. In the vehicle air conditioner according to claim 2,
The guide portion includes a first guide wall erected with respect to the opening / closing surface and a first guide wall.
A second guide wall provided at the end of the first guide wall away from the opening / closing surface and extending substantially parallel to the opening / closing surface.
Equipped with
The first guide wall is an air conditioner for a vehicle, which is formed so as to be inclined toward the central opening door side toward the rotation shaft side on the opening / closing surface. In the vehicle air conditioner according to claim 2 or 3.
The guide portion is a vehicle air conditioner in which the height from the opening / closing surface changes along the extending direction of the outer opening door orthogonal to the axial direction of the rotating shaft. In the vehicle air conditioner according to any one of claims 1 to 4.
Inside the air-conditioning case, a blower guide that faces the passage and guides the air that has passed through the cooler to the opening is provided, and the guide portion is provided at a position on the downstream side of the blower guide. Air conditioner for. The vehicle air conditioner according to any one of claims 1 to 5.
The opening communicates with an air outlet that blows air to the vicinity of the occupant's face in the passenger compartment, and the outer opening is formed so that the air can always flow through the guide portion regardless of the open / closed state of the mode switching door. Air conditioner for vehicles.

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