JP2004175237A - Air conditioning unit for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a miniaturizable air conditioning unit for a vehicle, having a sufficient temperature adjustment performance. <P>SOLUTION: The air conditioning unit is provided with a heat exchanger 22 for heat absorption, a heat exchanger 23 for heat radiation, a fan, a temperature control door 24, and an in-cabin air flow path 16 in the interior of a unit case 10. The heat exchanger 22 and the heat exchanger 23 are disposed in an approximately V shape along the vertical direction. The fan is provided on the upper part of these heat exchangers 22, 23. The temperature control door 24 is disposed in an approximately V shape narrow angle part 16b formed by the front surfaces 22a, 23a of the heat exchangers 22, 23, and freely swings between the heat exchangers 22, 23. The air flow path 16 is connected to the blowing ports 17, 18 where an air conditioned wind sent from the blower fan flows into the narrow angle part 16b from the upper parts of the heat exchangers 22, 23, passes through the heat exchangers 22, 23, and communicates to the interior of the cabin. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an air conditioning unit for a vehicle that adjusts a temperature environment in a vehicle compartment.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in order to improve the temperature environment in a vehicle interior, conditioned air whose temperature has been adjusted by a vehicle air conditioning unit has been blown into the vehicle interior. Also, in the case of a vehicle having a relatively large vehicle interior space, such as a so-called one-box type, it is difficult to provide a comfortable temperature environment only by installing a vehicle air conditioning unit in front of the vehicle interior. A vehicular air conditioning unit is also installed behind the vehicle, and air conditioning air whose temperature has been adjusted toward the rear seats is blown to provide a comfortable temperature environment for the entire vehicle interior.
[0003]
[Patent Document 1]
JP-A-11-254947
[Problems to be solved by the invention]
However, the conventional vehicle air conditioning unit for the rear seat requires a large space when mounted on a vehicle because the blower and the heat exchanger are arranged in series.
[0005]
As a result, depending on the vehicle, there is a possibility that the air conditioning unit for the vehicle cannot be mounted unless the capacity of the blower, the heat exchanger, and the like is reduced and the vehicle air conditioning unit is reduced in size at the expense of the temperature control function.
[0006]
Therefore, an object of the present invention is to provide an air conditioning unit for a vehicle that has sufficient temperature control performance and can be downsized.
[0007]
[Means for Solving the Problems]
SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the invention according to claim 1 is configured such that conditioned air is supplied to a unit case in which a vehicle interior air flow path through which conditioned air is blown is formed. The air conditioning unit for a vehicle provided with a blower fan to be introduced, a heat absorbing heat exchanger for cooling the conditioned air, and a heat radiating heat exchanger for heating the conditioned air, is provided along the vertical direction, and substantially. The heat exchanger for heat absorption and the heat exchanger for heat radiation arranged in a V-shape, the blower fan provided above the heat exchanger for heat absorption and the heat exchanger for heat radiation, and the heat absorber for heat absorption. A substantially V-shaped space formed by the front surface of the heat exchanger and the front surface of the heat-radiating heat exchanger, and disposed between the heat-absorbing heat exchanger and the heat-radiating heat exchanger. From the temperature control door that rotates freely and the blower fan The blown conditioned air flows into the substantially V-shaped space from above the heat absorbing heat exchanger and the heat radiating heat exchanger, and flows from the substantially V-shaped space into the heat absorbing heat exchanger. An interior of the unit case is provided with an exchanger or the vehicle interior air flow path that passes through the heat exchanger for heat radiation and is connected to an air outlet that is communicated with the vehicle interior.
[0008]
According to a second aspect of the present invention, there is provided a vehicle air conditioning unit according to the first aspect, wherein the rear side of the heat absorbing heat exchanger in the vehicle interior air flow path and the heat radiating heat exchanger are provided. The air outlet is provided on each of the back sides, and a communicating portion that communicates the back side of the heat exchanger for heat absorption, the back side of the heat exchanger for heat dissipation, and the air outlet is formed, and the heat sink for heat dissipation is formed. A mode switching door for selectively closing the outlet on the exchanger side and the communication part is provided in the unit case.
[0009]
According to a third aspect of the present invention, there is provided the air conditioning unit for a vehicle according to the second aspect, wherein the temperature control is performed in a state where the mode switching door closes an air outlet on a heat exchanger side for heat radiation. A cam mechanism is provided that allows the mode switching door to freely rotate in a state where the door freely rotates and the temperature control door closes the heat absorbing heat exchanger.
[0010]
【The invention's effect】
According to the first aspect of the present invention, the heat exchanger for heat absorption and the heat exchanger for heat radiation are installed in a substantially V shape, the temperature control door is installed rotatably at a narrow angle portion, and the blower fan is used for heat absorption. By installing the heat exchanger above the heat exchanger and the heat exchanger for heat radiation, the vehicle interior air flow path formed inside the unit case can be shortened. Can be reduced in size.
[0011]
According to the second aspect of the invention, in addition to the effect of the first aspect, the unit is provided such that the mode switching door is provided so as to selectively close the air outlet and the communication portion on the side of the heat exchanger for heat radiation. The air-conditioning air outlet can be changed without increasing the size of the case.
[0012]
According to the third aspect of the invention, in addition to the effects of the first and second aspects, the temperature control door and the mode switching door can be linked by a relatively simple cam mechanism, so that the unit case is enlarged. It is possible to switch the air outlet while controlling the temperature of the conditioned air without performing the above operation.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a partially perspective view showing a configuration of an embodiment of a vehicle air-conditioning unit 1 according to the present invention, and conditioned air is blown along arrows in the drawing.
[0014]
The vehicle air-conditioning unit 1 of this embodiment is disposed behind a rear wheel tire house of a rear wheel of a vehicle having a plurality of seats in a front-rear direction in a vehicle interior, and air-conditions a vehicle interior space around a rear seat. .
[0015]
The vehicle air conditioning unit 1 includes a unit case 10 described later, a blower fan (not shown) disposed inside the unit case 10, a heat absorbing heat exchanger 22, a heat radiating heat exchanger 23, A temperature control door 24, a mode switching door 25, and a cam mechanism 30 that opens and closes by linking the temperature control door 24 and the mode switching door 25 are provided.
[0016]
The unit case 10 includes an upper case 11 having a shape like a snail shell and a lower case 12 having a box shape. A portion of the unit case 10 which contacts the mouth of the snail shell communicates with the upper surface 13a of the lower case 12. The upper case 11 is connected to the lower case 12 such that the upper case 11 projects from the lower case 12.
[0017]
In addition, the unit case 10 has an inlet 15 disposed on the side surface 14a of the upper case 11 for introducing conditioned air therein, and an inlet 15 formed in the upper case 11 and the lower case 12 in FIG. An air passage 16 through which the conditioned air is blown along the air passage, and an air outlet (not shown) provided on the upper surface 13a of the lower case 12 on the rear side 22b of the heat-absorbing heat exchanger 22 described later and provided on the upper rear side of the vehicle. (Shown) and a vent outlet 17 for discharging air-conditioned air into the vehicle cabin, and an outlet provided on the side surface 14b of the lower case 12 facing the rear side 23b of the heat-radiating heat exchanger 23 to be described later and provided at the lower rear part of the vehicle. A foot outlet 18 for discharging conditioned air into the vehicle interior through a vehicle (not shown) is provided.
[0018]
The blower fan is disposed in the upper case 11 and introduces conditioned air into the vehicle interior air passage 16 inside the unit case 10.
[0019]
The heat absorbing heat exchanger 22 is disposed in the lower case 12, circulates refrigerant therein, and removes heat from the conditioned air when the conditioned air passes through the heat absorbing portion 22c, thereby cooling and dehumidifying the conditioned air. Is what you do.
[0020]
The heat-radiating heat exchanger 23 is provided in the lower case 12, and circulates therein cooling water heated by waste heat from a power source (not shown) such as an engine, and the conditioned air passes through the heat-radiating portion 23c. At this time, heat is given to the conditioned air.
[0021]
The heat exchanger 22 for heat absorption and the heat exchanger 23 for heat radiation are provided in the lower case 12 along the vertical direction, and are arranged in a substantially V-shape.
[0022]
The vehicle interior air flow path 16 is configured such that the conditioned air introduced from the inlet 15 rotates in the upper case 11 in the circumferential direction and exchanges heat with the front surface 22 a of the heat absorbing heat exchanger 22 in the lower case 12. It is formed so as to be blown into a space 16 a having a V-shape formed by the front surface 23 a of the heat exchanger 23. The conditioned air blown to the rear side 22b of the heat-absorbing heat exchanger 22 is formed so as to be discharged from the vent outlet 17 or the foot outlet 18, and heat is radiated from the front surface 23a of the heat-radiating heat exchanger 23. The conditioned air blown to the back side 23b of the heat-radiating heat exchanger 23 through the portion 23c is formed so as to be discharged from the vent outlet 17 or the foot outlet 18. In other words, a communication portion 19 is formed to communicate the back side 22b of the heat exchanger 22 for heat absorption, the back side 23b of the heat exchanger 23 for heat radiation, and the vent outlet 17 and the foot outlet 18.
[0023]
The temperature control door 24 is provided between the heat absorbing portion 22c of the heat absorbing heat exchanger 22 and the heat absorbing portion 22c at the narrow angle portion 16b of the space 16a having a V-shape formed by the heat absorbing heat exchanger 22 and the heat radiating heat exchanger 23. The lower case 12 is pivotally supported by the upper surface 13a and the lower surface 13b so that the heat radiating portion 23c of the heat exchanger 23 can be selectively closed.
[0024]
The mode switching door 25 has a portion communicating with the vent outlet 17 from the rear side 23 b of the heat-radiating heat exchanger 23 of the communicating portion 19, and the lower case 12 so that the foot outlet 18 can be selectively closed. It is supported by the upper surface 13a and the lower surface 13b.
[0025]
The cam mechanism 30 is disposed on the upper surface 13 a of the lower case 12 and is integrally formed on the upper end of the support shaft 24 a of the temperature control door 24, and is integrally formed on the upper end of the support shaft 25 a of the mode switching door 25. Mode switching cam 32, and a first temperature control pin 33, a second temperature control pin 34, a first mode switching pin 35, and a second mode switching pin 36 on a rotating surface that rotates about a cam center 37. And a cam pin body.
[0026]
Further, the cam pin body rotates about a cam center 37 provided, so that the cam surface 31a and the cam groove 31b provided on the temperature control cam 31 and the cam surface 32a provided on the mode switching cam 32 and the cam surface 32a. The groove 32b and the pins 33, 34, 35, 36 are engaged, and the rotation operation of the temperature control door 24 and the mode switching door 25 is performed.
[0027]
Thereby, when the mode switching door 25 closes the foot outlet 18, the temperature control door 24 freely rotates between the front surface 22a of the heat exchanger 22 for heat absorption and the front surface 23a of the heat exchanger 23 for heat radiation. When the temperature control door 24 closes the heat absorption heat exchanger 22, the mode switching door 25 is connected to the foot air outlet 18 and the communication port 19 from the rear side 23 b of the heat radiation heat exchanger 23 through the vent outlet. It freely rotates between the portion leading to 17.
[0028]
Next, each blowing state will be described. The vehicle air-conditioning unit 1 of the present embodiment has three air blowing states including a cool air vent, a hot air vent, and a hot air foot. 2 to 4 show the positions of the temperature control door 24 and the mode switching door 25 in each air blowing state, and the air flow path of the conditioned air by arrows in the drawings.
[0029]
−Cool air vent ventilation−
As shown in FIG. 2, in the case of the cool air vent blow, while the cam groove 31 b provided in the temperature control cam 31 and the first temperature control pin 33 are engaged, the cam surface 32 a of the mode switching door 25 is The one mode switching pin 35 is in contact. Accordingly, the temperature control door 24 is held so as to close the front surface 23a of the heat radiating portion 23c while opening the front surface 22a of the heat absorbing portion 22c, and the mode switching door 25 opens the communication portion 19 while blowing the foot. The outlet 18 is held so as to close.
[0030]
-Warm air vent ventilation-
As shown in FIG. 3, in the case of hot air vent ventilation, the cam surface 31 a engages with the cam groove 31 b provided on the temperature control cam 31 and the second temperature control pin The first mode switching pin 35 is in contact with the cam surface 32a of the mode switching door 25 at the same time as the contact 34. Thus, the temperature control door 24 is held so as to close the front surface 22a of the heat absorbing portion 22c while opening the front surface 23a of the heat radiating portion 23c, and the mode switching door 25 opens the communication portion 19 and The outlet 18 is held so as to close.
[0031]
-Warm air foot ventilation-
As shown in FIG. 4, in the case of hot air foot blowing, the second temperature control pin is attached to the cam surface 31 a while the cam groove 32 b provided in the mode switching cam 32 and the second mode switching pin 36 are engaged. 34 are in contact.
[0032]
Thus, the temperature control door 24 is held so as to close the front surface 22a while opening the front surface 23a of the heat radiating portion 23c, and the mode switching door 25 opens the communication portion 19 while opening the foot outlet 18. It is held to close.
[0033]
-Ventilation switching-
When switching between the cool air vent ventilation and the hot air vent ventilation, the temperature control door 24 rotates by rotating the cam pin body while the first temperature control pin 33 moves along the cam groove 31 b of the temperature control cam 31, The front surface 22a of the heat exchanger 22 for heat absorption and the front surface 23a of the heat exchanger 23 for heat radiation are selectively closed. Further, the mode switching cam 32 is held at a position where the mode switching door 25 closes the foot outlet 18 because the first mode switching pin 35 moves while abutting on the cam surface 32 a by the rotation of the cam pin body. Is done.
[0034]
When switching between the hot air vent ventilation and the hot air foot ventilation, the mode switching door 25 is rotated by the rotation of the cam pin body while the second mode switching pin 36 moves in the cam groove 32 b, and the mode switching door 25 is rotated. The portion communicating with the vent outlet 17 from the rear side 23b of the heat exchanger 23 for heat radiation and the foot outlet 18 are selectively closed. Further, the temperature control cam 31 moves the second temperature control pin 34 while abutting on the cam surface 31 a by rotating the cam pin body, so that the temperature control door 24 closes the front surface 22 a of the heat absorbing heat exchanger 22. It is held in the closed position.
[0035]
With the above configuration, the heat-exchanging heat exchanger 22 and the heat-dissipating heat exchanger 23 are installed in a substantially V shape, the temperature control door 24 is installed rotatably on the narrow-angle portion 16b, and the blower fan By installing the heat exchanger 23 above the heat exchanger 22 and the heat exchanger 23 for heat radiation, it is possible to shorten the air passage in the vehicle interior formed inside the unit case 10, so that the vehicle has sufficient temperature control performance and The air conditioning unit 1 can be reduced in size.
[0036]
Further, since the mode switching door 25 is provided so as to selectively close the foot outlet 18 and the communication portion 19, the outlet of the conditioned air can be switched without increasing the size of the unit case 10.
[0037]
Further, since the temperature control door 24 and the mode switching door 25 can be linked by the cam mechanism 30 having a relatively simple structure, the temperature of the conditioned air can be controlled without increasing the size of the unit case 10 without increasing the size. The exit can be switched.
[0038]
In the vehicle air conditioning unit of the present embodiment, the upper case 11 is connected to the lower case 12 so that the upper case 11 having a shape like a snail shell projects from the lower case 12. By connecting the case 11 to the lower case 12 so as not to protrude from the lower case 12, further downsizing can be performed.
[Brief description of the drawings]
FIG. 1 is a system configuration diagram showing a configuration of a first embodiment of a vehicle air conditioner according to the present invention, and is a perspective view partially showing the internal configuration of the air conditioning system.
FIG. 2 is a cross-sectional view of a main part showing positions of a temperature control door and a mode switching door in a state of blowing a cool air vent.
FIG. 3 is a cross-sectional view of a main part showing positions of a temperature control door and a mode switching door in a hot-air vent ventilation state.
FIG. 4 is a cross-sectional view of a main part showing positions of a temperature control door and a mode switching door in a hot air foot blowing state.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Air-conditioning unit 10 for vehicles ... Unit case 16 ... Air passage 16 in the vehicle interior ... Air passage 16a in the vehicle interior ... A space 16b having a substantially V-shape ... Container side outlet)
18 Foot outlet (heat exchanger side outlet for heat radiation)
Reference numeral 19: communication part 22, heat-absorbing heat exchanger 22b, back side of heat-absorbing heat exchanger 23, heat-dissipating heat exchanger 23a, front surface of heat-dissipating heat exchanger 23b, rear side of heat-dissipating heat exchanger 24, temperature Control door 25: Mode switching door 30: Cam mechanism

Claims (3)

A blower fan for introducing conditioned air into the vehicle interior air flow path (16) is provided in a unit case (10) which is mounted on the vehicle and has a vehicle interior air flow path (16) through which air-conditioned air is blown. In a vehicle air conditioning unit provided with a heat absorbing heat exchanger (22) for cooling conditioned air and a heat radiating heat exchanger (23) for heating conditioned air,
The heat-exchanging heat exchanger (22) and the heat-dissipating heat exchanger (23), which are provided along the vertical direction and are arranged in a substantially V-shape;
The blower fan provided above the heat exchanger for heat absorption (22) and the heat exchanger for heat dissipation (23);
A narrow angle portion (16a) of a space (16a) having a substantially V shape formed by a front surface (23a) of the heat exchanger for heat absorption (22) and a front surface (23a) of the heat exchanger for heat radiation (23). A temperature control door (24) arranged at 16b) and rotatably rotating between the heat exchanger for heat absorption (22) and the heat exchanger for heat dissipation (23);
The conditioned air blown from the blower fan flows into the substantially V-shaped space (16a) from above the heat absorbing heat exchanger (22) and the heat radiating heat exchanger (23). Air outlets (17, 18) passing from the space (16a) having a substantially V-shape to the heat-exchanging heat exchanger (22) or the heat-radiating heat exchanger (23) and communicating with the vehicle interior. The vehicle air conditioning unit, wherein the vehicle interior air flow path (16) connected to the vehicle is provided inside the unit case (10). The vehicle air conditioning unit according to claim 1,
The outlets (17, 18) are respectively provided on the rear side (22b) of the heat absorbing heat exchanger (22) and the rear side (23b) of the heat radiating heat exchanger (23) in the vehicle interior air flow path (16). ) Is provided,
A communication portion (19) for communicating the back side (22b) of the heat exchanger for heat absorption (22), the back side (23b) of the heat exchanger for heat radiation (23), and the outlets (17, 18). Is formed,
The unit case (10) is provided with a mode switching door (25) for selectively closing the air outlet (18) on the side of the heat exchanger (23) for heat radiation and the communication portion (19). Air conditioning unit for vehicles. The vehicle air conditioning unit according to claim 2,
With the mode switching door (25) closing the air outlet (18) on the side of the heat-radiating heat exchanger (23), the temperature control door (24) freely rotates,
When the temperature control door (24) closes the heat absorbing heat exchanger (22), a cam mechanism (30) that allows the mode switching door (25) to rotate freely is provided. Vehicle air conditioning unit.

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