JP3936795B2 - Air conditioner for vehicles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle air conditioner.
[0002]
[Prior art]
Conventionally, as an air conditioner for a vehicle, one having a damper or a seat that slides in a direction perpendicular to the air flow direction for the purpose of downsizing or the like has been disclosed (for example, Japanese Patent Publication No. 7-57564, JP-A-8-258538, JP-A-4-292212, JP-A-7-156635, JP-A-7-205635, etc.).
[0003]
[Problems to be solved by the invention]
However, in any of the above-described vehicle air conditioners, the structure, in particular, the drive mechanism of the damper and the seat is complicated, resulting in high cost and the mixing of hot air and cold air tends to be insufficient.
[0004]
Accordingly, a first object of the present invention is to provide a compact vehicle air conditioner with a simple and inexpensive structure.
[0005]
Moreover, this invention makes it the 2nd subject to provide the vehicle air conditioner which can perform mixing of warm air and cold air appropriately.
[0006]
[Means for Solving the Problems]
As a means for solving the first problem, the present invention provides:
The air introduced into the air conditioning unit is cooled and dehumidified by an evaporator, divided into a hot air passage and a cold air passage, heated by a heater core in the hot air passage, passed as it is without being heated in the cold air passage, and then both In a vehicle air conditioner that is mixed and blown into the vehicle,
A pair of plate-like bodies are pivotally connected around a support shaft at a side edge, and are expanded and contracted in a direction perpendicular to the air flow in the air conditioning unit, thereby opening and closing the hot air passage and the cold air passage, respectively. Possible first and second wind shielding means;
Drive means for adjusting the opening degree in the hot air passage and the cold air passage by interlocking the first and second air shielding means ;
By connecting each said wind-shielding means to the same axial part provided in the center of the air-conditioning unit, it enables simultaneous rotation .
[0007]
Each of the wind shielding means can be rotated at the same time by being connected to the same shaft portion provided in the center of the air conditioning unit or by being connected in parallel so that the expansion and contraction directions are parallel. do it.
[0008]
Further, according to the present invention, as a means for solving the second problem, one end of each of the wind shielding means is rotatably connected to a shaft portion provided in the vicinity of the side wall of the air conditioning unit, and the wind shielding means are connected to each other. Can be bent to the upstream side of the air flow.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0010]
FIG. 1 is a schematic view of a vehicle air conditioner according to the present embodiment. This vehicle air conditioner is provided with an evaporator 2 from the upstream side, first and second dampers 3A and 3B, which are wind-shielding means according to the present invention, and a heater core 4 in an air conditioning unit 1 respectively. is there.
[0011]
The evaporator 2 cools and dehumidifies the air passing through the outside (total air flowing in the air conditioning unit) by allowing the refrigerant to flow and vaporize inside.
[0012]
As shown in FIG. 2, each of the first damper 3A and the second damper 3B has a structure in which a pair of plate-like bodies 5 are connected so as to be rotatable about a support shaft 5a. The first damper 3 </ b> A and the second damper 3 </ b> B are disposed so as to expand and contract in a direction orthogonal to the air flow in the air conditioning unit 1. That is, a shaft portion 6 is formed at one end edge of each of the dampers 3 </ b> A and 3 </ b> B, and is provided so as to be rotatable in the vicinity of the side wall constituting the air conditioning unit 1. One end portion of each shaft portion 6 protrudes to the outside of the air conditioning unit 1, and a lever 7 is integrated therewith and connected by a first connecting rod 8. Further, the other end edges of the dampers 3 </ b> A and 3 </ b> B are connected by the second connecting rod 9. The first damper 3A and the second damper 3B are both arranged in a mountain shape and bent toward the evaporator side. Any one of the shaft portions 6 is rotated by a motor (not shown), and when the motor is driven, the dampers 3A and 3B rotate in conjunction with each other, and the first damper 3A causes the hot air passage 10 to pass through. The cool air passage 11 can be opened and closed by the second damper 3B.
[0013]
The heater core 4 is disposed in the hot air passage 10 and heats air passing through the external hot air passage 10 when engine cooling water flows inside.
[0014]
Next, the operation of the vehicle air conditioner will be described.
[0015]
That is, by driving a motor (not shown) of the shaft portion 6, the ratio between the area where the first damper 3 </ b> A opens the hot air passage 10 and the area where the second damper opens the cold air passage 11 is adjusted. In this case, a region where the air is heated by the heater core 4 of the warm air passage 10 and a region where the air is passed without being heated are adjacent to each other at the center. Moreover, since each of the dampers 3A and 3B is bent in a mountain shape toward the evaporator side, the flowing air is easily collected in the central portion. Therefore, it is possible to reliably mix the warm air and the cold air without unevenness.
[0016]
When the warm air passage 10 is fully closed by the first damper 3A and the cold air passage 11 is fully opened by the second damper 3B, all the air cooled and dehumidified by the evaporator 2 flows without being heated by the heater core 4. The vehicle interior can be cooled most efficiently. Further, when the cold air passage 11 is fully closed by the second damper 3B and the hot air passage 10 is fully opened by the first damper 3A, all the air cooled and dehumidified by the evaporator 2 is heated by the heater core 4, and the inside of the vehicle is most efficient. Can be heated.
[0017]
FIG. 3 shows the case where the second damper 3 </ b> B opens the cold air passage 11, and the bending direction is the opposite side, that is, the downstream side in the blowing direction. According to this, it becomes possible to effectively utilize the surplus space on the cold air passage side.
[0018]
FIG. 4 shows the shaft portion 12 of the first damper 3 </ b> A and the second damper 3 </ b> B shared by the central portion of the air conditioning unit 1. According to this, the first damper 3A and the second damper 3B are interlocked with each other only by enabling the rotation position of the shaft portion 12 to be changed by a driving means (for example, a motor) (not shown), and the hot air passage 10 and the cold air passage. 11 opening areas can be adjusted. FIG. 4A shows a case where the opening degree of the hot air passage 10 by the first damper 3A and the opening degree of the cold air passage 11 by the second damper 3B are both ½ and substantially the same. In this case, the angle formed by each of the dampers 3A and 3B extending from the shaft portion 12 is about 90 degrees. From this state, when the shaft portion 12 rotates counterclockwise and reaches the position shown in FIG. 4B, the first damper 3A fully closes the hot air passage 10 and the second damper 3B is warm. The air passage 10 is fully opened. On the other hand, when the shaft 12 rotates clockwise and reaches the position shown in FIG. 4C, the first damper 3A fully opens the hot air passage 10, and the second damper 3B opens the hot air passage 10. It will be fully closed.
[0019]
FIG. 5 shows that the first damper 3A and the second damper 3B are juxtaposed in the width direction of the air conditioning unit 1 and connected to the same first shaft portion 12 disposed in the upper portion, so that the first damper 3A and the second damper 3B can be vertically expanded and contracted. Shows what Second shaft portions 13a and 13b are respectively provided at the lower end edge portions of the dampers 3A and 3B, and the end portions are slidably disposed in a groove portion 14 formed in the side wall of the air conditioning unit 1 in the vertical direction. . The shaft portion 12 is rotated by driving means (not shown) (for example, a motor). As the first damper 3A bends upstream and the hot air passage 10 is opened, the second damper 3B extends to close the cold air passage 11, and as the first damper 3A extends to close the hot air passage 10. The second damper 3B bends downstream to open the cold air passage 11.
[0020]
FIG. 6 shows a configuration in which the first damper 3A and the second damper 3B are operated by driving a motor (not shown) via the rack 15 and the pinion 16. That is, a pinion 16 is provided on the drive shaft of the motor, and a rack 15 that meshes with the pinion 16 is formed on the second connecting rod 9.
[0021]
FIG. 7 shows the first damper 3 </ b> A and the second damper 3 </ b> B that are operated by the lever 17 via the connecting rod 9. One end of the lever 17 is rotatably disposed around the support shaft 18 at the center of the air conditioning unit 1 and its rotational position is changed by a driving means (for example, a motor) (not shown). . On the other hand, the connecting rod 9 is formed with a groove 19 in which a pin 17a provided at the other end of the lever 17 is slidably engaged. Thereby, when the rotation position of the lever 17 is changed, the dampers 3 </ b> A and 3 </ b> B can be rotated through the connecting rod 9 by the pin 17 a sliding in the groove portion 19 of the connecting rod.
[0022]
【The invention's effect】
As is apparent from the above description, according to the vehicle air conditioner according to the present invention, the first and second wind shielding means are each configured by a plate-like body that is rotatably connected around the support shaft, Since both are linked, the drive mechanism can be simplified and manufactured at low cost. In addition, since the wind shielding means expands and contracts in the direction orthogonal to the air flow in the air conditioning unit, it can be made compact.
[0023]
In particular, each wind shield can be rotated simultaneously by connecting to the same shaft provided in the center of the air conditioning unit, or by connecting in parallel so that the expansion and contraction directions are parallel. Therefore, the wind shielding means can be interlocked with a simple configuration by simply rotating the shaft portion.
[0024]
In addition, since one end of each wind shielding means is rotatably connected to a shaft provided near the side wall of the air conditioning unit, the air heated by the heater core and the air not heated can be mixed at adjacent positions. It becomes possible to make the temperature uniform.
[Brief description of the drawings]
FIG. 1 is a schematic plan view showing a part of an air conditioning unit of a vehicle air conditioner according to an embodiment.
FIG. 2 is a front view showing the damper of FIG. 1;
FIG. 3 is a schematic plan view showing a part of an air conditioning unit of a vehicle air conditioner according to another embodiment.
FIG. 4 is a schematic plan view showing a part of an air conditioning unit of a vehicle air conditioner according to another embodiment.
FIG. 5 is a schematic plan view showing a damper of a vehicle air conditioner according to another embodiment.
FIG. 6 is a schematic plan view showing a part of an air conditioning unit of a vehicle air conditioner according to another embodiment.
FIG. 7 is a schematic plan view showing a part of an air conditioning unit of a vehicle air conditioner according to another embodiment.
[Explanation of symbols]
1: Air-conditioning unit 2: Evaporator 3A, 3B: Damper 4: Heater core 5: Plate body 5a: Support shaft 8: First connecting rod 9: Second connecting rod 10: Hot air passage 11: Cold air passage 12: First shaft Part 13: Second shaft part 15: Rack 16: Pinion 17: Lever

Claims (2)

The air introduced into the air conditioning unit is cooled and dehumidified by an evaporator, divided into a hot air passage and a cold air passage, heated by a heater core in the hot air passage, passed as it is without being heated in the cold air passage, and then both In a vehicle air conditioner that is mixed and blown into the vehicle,
A pair of plate-like bodies are pivotally connected around a support shaft at a side edge, and are expanded and contracted in a direction perpendicular to the air flow in the air conditioning unit, thereby opening and closing the hot air passage and the cold air passage, respectively. Possible first and second wind shielding means;
Drive means for adjusting the opening degree in the hot air passage and the cold air passage by interlocking the first and second air shielding means ;
The vehicle air conditioner is characterized in that each of the wind shielding means is connected to the same shaft portion provided at the center of the air conditioning unit so as to be simultaneously rotatable . 2. The vehicle air conditioner according to claim 1, wherein each of the wind shielding means is arranged in parallel so that the extending and contracting directions thereof are parallel and connected to the same shaft portion, thereby enabling simultaneous rotation. .

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