JP2004098964A - Air conditioner for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner for a vehicle capable of distributing appropriate wind quantity to the back seat in either foot mode or face mode. <P>SOLUTION: A mode selecting door 27 is provided to a branch part 23 where air conditioning wind flows in through a communication hole 22 and branches into a face passage 24 and a foot passage 25 for the front seat, and a partition member 28 for the back seat is arranged inside the foot passage 25. Thereby, the foot passage 25 is partitioned into a foot passage 35 for the front seat and a passage 36 for the back seat, and the front end of a face seal part 42 for the front seat opposing to an entrance part 38 for the back seat of the mode selecting door 27 is projected to a face opening part 26 side for the front seat for a foot seal part 41 for the front seat opposing to a foot entrance part 37 for the front seat. Expanding part of the face seal part 42 for the front seat forms an air conditioning wind guide passage 46 of which an entrance part 46a opens in the vicinity of the communication hole 22 and an exit part 46b opens at an entrance part 38 for the back seat. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vehicle air conditioner that blows conditioned air to both a front seat side and a rear seat side, and in particular, a vehicle air conditioner that can blow conditioned air to both a front seat side and a rear seat side with an appropriate air volume. About.
[0002]
[Prior art]
If the rear seat passage for guiding the conditioned air to the rear seat is provided outside the air conditioner body to distribute the air to the rear seat of the vehicle, the overall external dimensions become large, and it cannot be mounted due to the mounting space of the vehicle. There was a case. For this reason, as shown in JP-A-2002-46451, there is known a vehicle air conditioner in which a conventional foot passage is partitioned to provide a rear seat passage in an air conditioner main body.
[0003]
In the air conditioner described in this publication, as shown in FIG. 8, a cooling heat exchanger 86 and a heating heat exchanger 87 are arranged in an air conditioning case 81, and the conditioned air whose temperature is adjusted by these heat exchangers. The inflowing conventional foot passage 82 is partitioned by a partition member 83 and divided into left and right foot passages 84 and a rear face passage 85.
[0004]
As shown in FIG. 6, a foot face switching door 88 is provided at a branch portion between the front seat face passage 80 and the foot passage 84, and in the face mode, the foot passage 84 is closed. In some cases, the front passage 80 is closed.
[0005]
As shown in FIG. 7, a rear face door 89 is provided at the entrance of the rear face passage 85. The rear face door 89 is attached to the same rotation shaft 90 as the foot face switching door 88, and rotates together with the foot face switching door 88. In the face mode, the entrance of the rear face passage 85 is opened, and in the foot mode, the entrance of the rear face passage 85 is closed.
[0006]
[Problems to be solved by the invention]
However, in the air conditioner described in the above publication, the rear face passage 85 is closed in the foot mode, so that air cannot be distributed to the rear face side. Conversely, the foot passage 84 is closed in the face mode. There was a problem that it was not possible to distribute air to the rear seat foot side.
[0007]
Further, if the rear face passage 85 is provided only in the conventional foot passage 82, the pressure loss (ventilation resistance) in the rear face passage 85 is larger than the pressure loss in the front face passage 80. There is also a problem that the wind easily flows toward the front seat face passage 80 and it is difficult to distribute an appropriate amount of air to the rear seat face.
[0008]
An object of the present invention is to solve the above-mentioned problem, and an object of the present invention is to provide a vehicle air conditioner that can distribute an appropriate air volume to a rear seat in any of a foot mode and a face mode.
[0009]
[Means for Solving the Problems]
An air conditioner for a vehicle according to the present invention includes an air conditioning case forming an air passage, a cooling heat exchanger disposed in the air passage to cool air, and a heating device arranged in the air passage to heat air. And a branch formed in the air passage, wherein the conditioned air whose temperature is adjusted by one or both of the cooling heat exchanger and the heating heat exchanger flows in through the communication port with the upstream side. A front passage formed in the air-conditioning case, for guiding the conditioned air from the branch portion toward the upper front of the front seat of the vehicle, and a front passage for an outlet of the front passage for the front seat. A face opening, a foot passage formed in the air-conditioning case, for guiding the conditioned air from the branch to the lower front seat and the rear seat of the vehicle, and a rotatable disposed in the branch. A mode switching door, wherein the foot passage By disposing a rear-seat partition member in the vehicle, the foot passage guides the conditioned air toward the lower front seat of the vehicle and the conditioned air toward the rear seat of the vehicle. And the rear seat passage is divided into a rear seat passage and an entrance of the foot passage is an entrance of the front seat foot passage and a rear entrance of the rear seat passage. The mode switching door is divided into a front entrance seat seal portion facing the front entrance foot entrance portion and the front seat foot seal portion. A front face seal portion facing the portion, the front face face seal portion has a front end protruding toward the front seat face opening side compared to the front seat foot seal portion, The portion from the front end to the rear side swells toward the front seat face opening side. In the foot mode, the mode switching door is pivoted toward the front seat face passage so that the front seat face seal portion closes the front seat face passage, and the front seat foot is closed. The entrance portion and the rear seat entrance portion are opened, and in the face mode, the mode switching door pivots toward the foot passage side, and the front seat foot seal portion closes the front seat foot entrance portion. In addition to the closing, the front seat face seal portion forms an air conditioning wind guide path in which an entrance portion opens near the communication port and an exit portion opens in the rear seat entrance portion.
[0010]
Therefore, the rear seat passage is not closed in any of the foot mode and the face mode, and the conditioned air is distributed to the rear seat. In addition, in the face mode, the front seat face seal portion forms an air-conditioned air guide path in which the entrance portion opens near the communication port and the exit portion opens in the rear seat entrance portion. Since the air-conditioning air guide path has an inlet opening near the communication port, the air-conditioning air flows into the branch portion from the communication port without fail and is guided to the rear seat passage. . Therefore, an appropriate amount of conditioned air can be distributed to the rear seat.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0012]
The ventilation system of the vehicle air conditioner according to the present embodiment is roughly divided into an air conditioning unit 1 shown in FIGS. 1 to 3 and a blower unit (not shown). The air-conditioning unit 1 is arranged at the center in the left-right direction below the instrument panel in the vehicle interior, and the blower unit is arranged offset from the center toward the passenger seat. 1 to 3 indicate the front-back, left-right, and up-down directions of the air-conditioning unit 1, and match these front-back, left-right, and up-down directions with the front-back, left-right, and up-down directions of the vehicle. Thus, the air conditioning unit 1 is mounted on a vehicle. The blower unit is a well-known unit that takes in one or both of the inside air and the outside air by the inside / outside air switching box and sends it to the air conditioning unit 1 by the blower.
[0013]
The air conditioning unit 1 is of a type in which an evaporator (evaporator) 12 as a heat exchanger for cooling and a heater core 13 as a heat exchanger for heating are built in one air conditioning case 11. The air-conditioning case 11 is a molded product of a resin such as polypropylene, and has an air inlet 14 formed on the side surface of the frontmost portion. Air sent from the blower unit flows into the air inlet 14 as shown by an arrow A in FIG. An air passage through which the air flows is formed in the air conditioning case 11.
[0014]
An evaporator 12 is disposed in the air-conditioning case 11 immediately after the air inlet 14 so as to cross the entire area of the air passage in the air-conditioning case 11, and the downstream side of the evaporator 12 (the downstream side in the air flow; A heater core 13 is disposed below the evaporator 12 at a predetermined interval. The heater core 13 is slightly inclined so that the upper end is located rearward of the lower end.
[0015]
In the air passage in the air-conditioning case 11, a cool air bypass passage 15 is formed above the heater core 13 so that air (cool air) flows by bypassing the heater core 13. A flat air mix door 16 is disposed between the heater core 13 and the evaporator 12 so as to be vertically rotatable. The air mix door 16 adjusts the blown air temperature by adjusting the ratio of the amount of hot air heated by the heater core 13 to the amount of cool air that bypasses the heater core 13 through the cool air bypass passage 15.
[0016]
In the air-conditioning case 1, a wall portion 17 extending in the vertical direction at a predetermined interval from the heater core 13 is integrally formed with the air-conditioning case 11 at a portion downstream of the heater core 13. The wall portion 17 forms a warm air passage 18 that extends upward immediately after the heater core 13. The downstream side (here, the upper side) of the hot air passage 18 joins with the downstream side of the cool air bypass passage 15 above the heater core 13, and the joined portion forms an air mixing section 19 that mixes the cold air and the hot air. are doing.
[0017]
In the upper wall of the air conditioning case 11, a defroster opening 20 is opened at a position adjacent to the air mixing section 19. A defroster duct (not shown) is connected to the defroster opening 20, and the temperature-controlled conditioned air flows into the defroster duct from the air mixing section 19 via the defroster opening 20, and the defroster duct connected to the downstream side of the defroster duct. The air is blown out from the exit toward the inside of the vehicle windshield.
[0018]
A defroster door 21 is rotatably arranged below the defroster opening 20. The defroster door 21 switches between the defroster opening 20 and the communication port 22 to open and close. The communication port 22 forms an inlet (upstream opening) of a branch portion 23 that branches the conditioned air from the air mixing section 19 into a front face passage 24 and a foot passage 25 described later.
[0019]
As shown in FIG. 3, a left / right partition member 31 is disposed in the center of the air conditioning case 11 in the left / right direction, and an air passage from immediately after the evaporator 12 to the communication port 22 is provided by the left / right partition member 31. It is divided into two parts in the vehicle left-right direction.
That is, the air passage from immediately after the evaporator 12 to the communication port 22 is partitioned into a right-seat passage 32R and a left-seat passage 32L, and the air mix door 16 is divided into a right-seat passage 32R and a left-seat passage 32L. Each of the air mix doors 16 is configured such that the rotational position of each air mix door 16 is separately controlled so that the temperature of the blown air on the right seat side and the left seat side can be adjusted independently. Further, the defroster opening 20 and the defroster door 21 are separately provided on the right seat side and the left seat side.
[0020]
The configuration from the air inlet 14 to the communication port 22 is the same as that of the conventional vehicle air conditioner and is well known, and therefore, detailed description is omitted.
[0021]
Above the branching portion 23, a front seat face passage 24 for guiding the conditioned air toward the upper part of the front seat of the vehicle extends. That is, the front face opening 26 is provided on the upper wall of the air-conditioning case 11 at a position behind the defroster opening 20, and the front face passage extends from the branch portion 23 to the front face opening 26. 24 are formed. Accordingly, the entrance of the front seat face passage 24 opens to the branch portion 23, and the front seat face opening 26 forms the exit of the front seat face passage 24. A front face duct (not shown) is connected to the front face opening 26, and the conditioned air flows from the branch portion 23 through the front face passage 24 and the front face opening 26 to the front face face duct. The air flows in and is blown out from the front seat face outlet connected to the downstream side of the front seat face duct toward the upper part of the front seat (upper body of the occupant in the front seat) of the vehicle.
[0022]
In addition, the front seat face opening 26 has two openings for the right seat and the left seat, and correspondingly, the face passage 24 for the front seat also has the opening of the mode switching door 27 to be described later. It is divided into right and left except for the operation area. In addition, the branch portion 23 is also partitioned left and right by the left and right partition members 31 except for an operation area of the mode switching door 27 described later, and the conditioned air from the left seat passage 32L and the right seat passage 32R. , Through the branch portion 23, into the left and right passages in the front seat face passage 24, and into the left and right front seat foot passages 35 described later.
[0023]
Below the branching portion 23, a foot passage 25 for guiding conditioned air toward the lower front seat and the rear seat of the vehicle extends. In other words, the rearmost rear wall 33 of the air-conditioning case 11 extends in the vertical direction at a predetermined interval from the wall portion 17. The foot passage 25 is formed between the rear wall 33 and the wall 17, and the entrance of the foot passage 25 opens to the branch portion 23.
[0024]
As shown in FIG. 5, a rear seat partition member 28 composed of two plate members 28R and 28L is arranged in the foot passage 25. The portions above the lower portions of the plate members 28R, 28L are formed so as to extend in the up-down direction, and are arranged in the foot passage 25 substantially in parallel with a predetermined interval. The lower portion of the right plate member 28R is formed so as to extend rightward to reach the right side wall 34R (see FIG. 3) of the air conditioning case 11, and the lower portion of the left plate member 28L extends leftward to control the air conditioning. The case 11 is formed so as to reach the left side wall 34L. The width in the front-rear direction of the plate members 28R, 28L is formed so as to substantially match the width in the front-rear direction in the foot passage 25.
[0025]
By arranging the rear-seat partitioning member 28 in the foot passage 25, as shown in FIG. 3, a front foot passage 35 formed on both left and right sides and a left and right front seat are formed in the foot passage 25. And a rear seat passage 36 formed between the front foot passages 35. The entrances of the foot passages 25 are the left and right front seat foot entrances 37 (see FIG. 1), which are the entrances of the left and right front seat foot passages 35, and the rear entrances of the rear seat passages 36. It is divided into a seat entrance 38 (see FIG. 2).
[0026]
On the left and right side walls 34R and 34L of the air conditioning case 11, front seat foot openings 39 are provided at portions corresponding to lower portions of the left and right front seat foot passages 35, respectively. A front seat foot duct (not shown) is connected to each of the front seat foot openings 39, and the conditioned air flows from the branch portion 23 through the front seat foot passage 35 and the front seat foot opening 39 to the front seat foot duct. And is blown out from the front seat foot outlet connected to the downstream side of the front seat foot duct toward the lower part of the front seat of the vehicle (the foot of the occupant in the front seat).
[0027]
The rear wall 33 of the air-conditioning case 11 is provided with a rear seat opening 40 at a position below the rear seat passage 36. A rear-seat duct (not shown) is connected to the rear-seat opening 40, and conditioned air flows from the branch portion 23 into the rear-seat duct via the rear-seat passage 36 and the rear-seat opening 40. The rear-seat duct is divided into a rear-seat face duct and a rear-seat foot duct, and the air-conditioning air flows through the rear-seat face outlet connected downstream of the rear-seat face duct to the upper part of the rear seat (rear). It is blown out toward the upper part of the occupant of the seat, and is blown out toward the lower part of the rear seat of the vehicle (the foot of the rear occupant) from the rear foot foot outlet connected to the downstream side of the rear seat foot duct. The Rukoto. Note that a door for opening and closing each duct is provided upstream of the rear face duct and the rear foot duct.
[0028]
A mode switching door 27 as shown in FIG. A door shaft 29 is integrally formed at the rear end of the mode switching door 27, and the door shaft 29 is rotatably attached to the air conditioning case 11. It is disposed rotatably on the side of the face passage 24 and on the side of the foot passage 25.
[0029]
The mode switching door 27 has left and right front seat foot seal portions 41 facing the left and right front seat foot entrance portions 37, respectively, and a front seat face seal portion 42 facing the rear seat entrance portion. are doing. That is, the front seat face seal portion 42 is disposed between the left and right front seat foot seal portions 41 and is formed continuously with the left and right front seat foot seal portions 41.
[0030]
The left and right front seat foot seal portions 41 are each formed in a flat plate shape, but the front seat face seal portion 42 has a front end 42b having a front seat face in comparison with the front seat foot seal portion 41. The portion protruding toward the opening 26 side and extending from the front end 42b to the rear side swells toward the front seat face opening 26 side. More specifically, the upper surface 42c of the swelling portion (hereinafter, swelling portion) of the front seat face seal portion 42 is formed so that the cross section in the front-rear direction is substantially arc-shaped (see FIG. 2), and the front seat face is formed. The left and right side surfaces 42e and 42d of the bulging portion of the seal portion 42 have a substantially sector shape. The interior surrounded by the upper surface 42c and the left and right side surfaces 42e and 42d is hollow, and forms an air-conditioned air guide path 46 to be described later. A packing 45 is attached to the periphery of the mode switching door 27 in order to enhance the sealing performance. The mode switching door 27 is connected to an actuator mechanism such as a servomotor via a link mechanism (not shown), and is operated by the actuator mechanism.
[0031]
When the mode switching door 27 rotates toward the front seat face passage 24, the bulging portion of the front seat face seal portion 42 enters the front face passage 24. It is arranged and shaped according to the front seat face seal portion 42 so that it can enter and close the front seat face passage 24.
[0032]
Next, the operation of the air conditioner will be described separately for a face mode and a foot mode.
(1) Face Mode When the face mode (mode for blowing out the conditioned air to the face) is selected, the mode switching door 27 turns to the foot passage 25 side and is arranged at the solid line position in FIGS. 1 and 2. You. As a result, the left and right front seat foot seal portions 41 of the mode switching door 27 close the left and right front seat foot entrance portions 37, respectively (see FIG. 1). Therefore, the conditioned air is not blown out toward the lower part of the front seat.
[0033]
At this time, the front face seal portion 42 of the mode switching door 27 is disposed on the rear seat entrance portion 38 (see FIG. 2), but the swelling portion of the front seat face seal portion 42 is provided. To form an air-conditioned wind guide path 46, an inlet 46a of the air-conditioned wind guide path 46 opens near the communication port 22, and an outlet 46b of the air-conditioned wind guide path 46 overlaps the rear seat inlet 38. It will open. That is, the rear-seat entrance 38 is not closed, and the branching section 23 and the rear-seat passage 36 are communicated by the air-conditioned wind guide path 46.
[0034]
The conditioned air flowing from the communication port 22 into the branch portion 23 flows into the front seat face passage 24 and is partially guided to the rear seat passage 36 by the conditioned air guide passage 46. Therefore, even in the face mode, air is distributed to the rear seat. Further, since the conditioned air guide path 46 is open near the communication port 22, a part of the conditioned air flowing from the communication port 22 to the branch portion 23 can be reliably taken in. Therefore, an appropriate amount of conditioned air is distributed to the rear seat. Further, the air-conditioned wind guide path 46 has a substantially fan-shaped cross section in the front-rear direction (air flow direction) that smoothly connects the branch portion 23 and the rear-seat passage 36. Since the air flows from the air mixing section 19 on the upstream side of the branch section 23 into the rear seat passage 36 in a substantially inverted U-shaped flow, the pressure loss is small. For this reason, it is possible to prevent a decrease in the amount of air distribution to the rear seat.
(2) Foot Mode When the foot mode (mode for blowing out the conditioned air to the foot) is selected, the mode switching door 27 is turned to the front face passage 24 side, and the two-dot chain line B in FIG. Placed in the position. As a result, the bulging portion of the front seat face seal portion 42 of the mode switching door 27 enters the front seat face passage 24, and the front seat face seal portion 42 closes the front seat face passage 24. Become. Therefore, the conditioned air is not blown out toward the upper part of the front seat.
[0035]
On the other hand, the left and right front seat foot entrances 37 and the rear seat entrances 38 are opened, so that the conditioned air is distributed in the lower front seat direction and the rear seat direction. The direction of air distribution in the upper direction, the lower direction, or both directions of the rear seat among the rear seat directions is determined by the rotation of the door for opening and closing the rear seat face duct and the rear seat foot duct described above. It is determined by the moving position.
[0036]
As described above, according to the air conditioning unit 1, the air can be distributed to the rear seat in any of the foot mode and the face mode. In the foot mode, the swelling portion of the front seat face seal portion 42 enters the front seat face passage 24 and does not hinder the flow of air.
[0037]
In the above embodiment, the left and right partition members 31 are not provided in the operation area of the mode switching door 27 so that the left and right partition members 31 do not hinder the operation of the mode switching door 27. A slit extending from the front end 42b to slightly before the rear end 42a is provided at the center in the left-right direction of the front face seal portion 42 of the mode switching door 27, and the left and right partition members 31 are sandwiched between the slits. The left and right partition members 31 can also be provided in the operation area of the mode switching door 27, and the separation of left and right conditioned air can be enhanced.
[0038]
That is, the vehicle air conditioner of the present invention can adopt various embodiments without departing from the scope of the claims.
[Brief description of the drawings]
FIG. 1 is a schematic cross-sectional view of an air-conditioning unit of an air-conditioning apparatus according to an embodiment of the present invention, which is a cross-sectional view taken along line II of FIG.
FIG. 2 is a schematic sectional view of the air conditioning unit shown in FIG. 1 and is a sectional view taken along the line II-II in FIG.
FIG. 3 is a schematic sectional view of the air conditioning unit shown in FIG. 1 and is a sectional view taken along the line III-III in FIG.
FIG. 4 is a perspective view of a mode switching door of the air conditioning unit shown in FIG.
FIG. 5 is a perspective view of a rear-seat partition member of the air conditioning unit shown in FIG. 1;
FIG. 6 is a schematic cross-sectional view of an air-conditioning unit of a conventional air-conditioning apparatus, and is a cross-sectional view along the line VI-VI in FIG.
7 is a schematic sectional view of the air conditioning unit shown in FIG. 6, and is a sectional view taken along line VII-VII in FIG.
8 is a schematic sectional view of the air conditioning unit shown in FIG. 6, and is a sectional view taken along line VIII-VIII in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Air-conditioning unit 11 ... Air-conditioning case 12 ... Evaporator (heat exchanger for cooling)
13. Heater core (heat exchanger for heating)
22 communication opening 23 branch part 24 front seat face passage 25 foot passage 26 front seat face opening 27 mode switching door 28 rear seat partition member 35 front seat foot passage 36 rear Passageway 37 for seats Foot entrance portion 38 for front seats 41 Entrance portion 41 for rear seats Foot seal portion 42 for front seats Face seal portion 42a for front seats Rear end portion 42b Front end portion 46 Air-conditioned wind guide path 46a … Inlet part 46b… Outlet part

Claims (1)

An air conditioning case forming an air passage;
A cooling heat exchanger arranged in the air passage to cool the air,
A heating heat exchanger arranged in the air passage to heat the air,
A branch portion formed in the air passage, and an air-conditioned air whose temperature has been adjusted by one or both of the cooling heat exchanger and the heating heat exchanger flows in through a communication port with the upstream side,
A front face passage for the front seat, formed in the air conditioning case, for guiding the conditioned air from the branch portion toward the front seat upper direction of the vehicle,
A front seat face opening which is an exit of the front seat face passage,
A foot passage formed in the air-conditioning case, for guiding the conditioned air from the branch portion toward a lower front seat and a rear seat of the vehicle,
A rotatable mode switching door disposed in the branch portion,
In a vehicle air conditioner comprising:
By arranging a rear-seat partition member in the foot passage, the foot passage has a front-seat foot passage for guiding the conditioned air toward a lower part of the front seat of the vehicle, and the foot passage for the rear seat of the vehicle. The entrance of the foot passage is partitioned into a rear passage for guiding the conditioned air, and the entrance of the foot passage is an entrance of the front foot passage, and the entrance of the rear passage. Is divided into the rear seat entrance section,
The mode switching door has a front seat foot seal portion facing the front seat foot entrance portion, and a front face face seal that is continuous with the front seat foot seal portion and faces the rear seat entrance portion. And a part,
The front seat face seal portion has a front end protruding toward the front seat face opening side in comparison with the front seat foot seal portion, and a portion extending from the front end to the rear side has the front seat face opening portion. Bulging to the part side,
In the foot mode, the mode switching door pivots toward the front seat face passage side so that the front seat face seal portion closes the front seat face passage and the front seat foot entrance portion. And the rear seat entrance is opened,
In the face mode, the mode switching door rotates to the foot passage side, the front seat foot seal portion closes the front seat foot entrance portion, and the front seat face seal portion, An air-conditioning system for a vehicle, wherein an air-conditioning wind guide path is formed in which an entrance is open near the communication port and an exit is open to the rear seat entrance.

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