JPH05301515A - Air-conditioning device for vehicle - Google Patents

Abstract

PURPOSE:To reduce an installation space in which an air-conditioning device is installed in the car room of an automobile. CONSTITUTION:A recessed part 18 recessed from a periphery toward the inside of a casing 2 is formed in the side wall part 17 of the casing 2. An actuator 26 to rotationally drive a shaft 25 to which one end part of a plate damper 8 for varying the opening of a cold air bypass 14 is fixed is contained in the recessed part 18. This constitution reduces an amount, by which the actuator is protruded outwardly of the casing 2, is further reduced by an amount (x) than conventional arts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a film damper to control main parts such as switching of air outlets and adjustment of a mixing ratio of cold air and warm air, and an auxiliary part such as opening and closing a cold air bypass. The present invention relates to a vehicle air conditioner that performs the above control by a plate damper.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 3, for example, a vehicle air conditioner has a casing 102 having a blowout port 101 for blowing out an air flow into the vehicle interior at its tip, and opening and closing the blowout port 101. The plate damper 103 and the damper driving means 104 that rotationally drives the plate damper 103 are provided. As the damper driving means 104, for example, a shaft 105 that fixes the end of the plate damper 103 and an electric motor 106 that rotationally drives the shaft 105 are used. Further, as the damper driving means, the shaft 1
In some cases, a link mechanism (not shown) including a plurality of levers and the like is arranged to interlock 05 and the electric motor 106.

[0003]

However, in the conventional vehicle air conditioner, since the damper driving means 104 such as the electric motor 106 and the link mechanism is attached to the outside of the casing 102, the physical condition of the air conditioner is reduced. There is a problem in that it becomes large and the installation space on the vehicle is large. It is an object of the present invention to provide a vehicle air conditioner that reduces the installation space for a vehicle.

[0004]

The present invention comprises a casing through which air flows, a damper movably mounted in the casing, and a damper driving means for driving the damper from the outside of the casing. The casing has a recessed portion which is recessed from the periphery toward the inside of the casing, and the damper driving means employs a technical means housed in the recessed portion.

[0005]

According to the present invention, the amount of protrusion of the damper drive means to the outside of the casing is accommodated by accommodating the damper drive means for driving the damper from the outside of the casing in the recessed portion which is recessed from the periphery toward the inside of the casing. Is smaller, the size of the air conditioner can be reduced.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a vehicle air conditioner of the present invention is shown in FIG.
A description will be given based on the embodiment shown in FIG. FIG. 1 is a diagram showing an air conditioner for an automobile. A vehicle air conditioner 1 includes a casing 2 through which air flows, a blower 3 that generates an air flow in the casing 2 toward the vehicle interior, an evaporator (refrigerant evaporator) 4 arranged in the casing 2, and Heater core (heater) 5
A film damper 6 for switching the outlet mode, an air mix film damper 7 for adjusting the mixing ratio of cold air and warm air, and a plate damper 8 arranged in the casing 2.
A damper driving means 9 for rotating the plate damper 8 (see FIG. 2).
(See) and.

On the downstream side of the casing 2, a ventilation outlet 10 that blows an air flow toward the upper body of the vehicle occupant in the front seat, a defroster outlet 11 that blows an air flow toward the inner surface of the windshield, and the front Heater outlet 1 that blows an air flow toward the feet of the vehicle occupant in the seat
2, and a rear heater outlet 13 that blows an airflow toward the feet of the vehicle occupant in the rear seat is formed. Also,
A cold air bypass 14 is formed inside the casing 2 to guide the cool air blown from the evaporator 4 to the ventilation outlet 10 by bypassing the heater core 5.

On the downstream side of the evaporator 4 in the casing 2, an introduction passage 15 for sending the cool air blown out from the evaporator 4 to the heater core 5 and a bypass passage 16 for bypassing air from the heater core 5.
Are formed. In addition, as shown in FIG. 2, the side wall portion 1 that constitutes the cold air bypass 14 in the casing 2
A circular recess 18 is formed in the inside 7 of the casing 2 with respect to the surroundings, that is, in the direction of narrowing the air passage width of the cold air bypass 14 from other locations. A damper drive means 9 (see FIG. 2) described later is fitted in the recess portion 18.

In the blower 3, an electric motor (not shown) is activated when a blower switch (not shown) provided on a control panel (not shown) is operated, and the blower 3 is rotated according to the number of revolutions of the electric motor. Obtain a predetermined air volume. Evaporator 4
Is a part of the refrigeration cycle, and when the air conditioner switch (not shown) on the control panel is operated, the refrigerant flowing in and the air passing through the casing 2 are heat-exchanged to cool the air. The heater core 5 heats the air by causing a hot water valve (not shown) to open after the engine is started to cause the engine cooling water supplied therein to exchange heat with the air passing through the casing 2.

The film damper 6 moves along the inner wall surface of the casing 2 while facing the ventilation outlet 10, the defroster outlet 11, and the heater outlet 12, so that the ventilation outlet 10 and the defroster outlet are provided. 11. Adjust the opening of the heater outlet 12. The film damper 6 has its ends fixed to the take-up shafts 19 and 20 rotatably supported by the casing 2, and abuts on the intermediate shafts 21 and 22 fixed to or integrally formed with the casing 2. It has an opening (not shown) that is stretched in a state and that opens when the ventilation outlet 10, the defroster outlet 11, or the heater outlet 12 overlaps with any one of the outlets. In addition,
Inside the winding shaft 19, an electric motor (not shown) for rotating the winding shaft 19 by a predetermined rotation angle according to a setting position of an outlet mode switching lever (not shown) provided on the control panel. ) Is arranged.

The air mix film damper 7 passes through the heater core 5 by moving along the introduction passage 15 and the bypass passage 16 while facing the introduction passage 15 and the bypass passage 16. The ratio between the amount of air and the amount of air bypassing the heater core 5 is adjusted. The air mix film damper 7 has its ends fixed to the winding shafts 23 and 24 rotatably supported by the casing 2,
It has an opening (not shown) that opens the passage when it overlaps with either the introduction passage 15 or the bypass passage 16. Inside the winding shaft 23, an electric motor (not shown) for rotating the winding shaft 23 by a predetermined rotation angle according to a setting position of a temperature adjusting lever (not shown) provided on the control panel. ) Is arranged.

The plate damper 8 is the damper of the present invention,
As shown in FIG. 2, the opening degree of the cold air bypass 14 is changed on the downstream side of the cold air bypass 14. The damper driving means 9 is composed of a shaft 25 that fixes one end of the plate damper 8 by means such as bonding, and an actuator 26 such as an electric motor that rotationally drives the shaft 25 at a predetermined rotation angle. The right end of the shaft 25 is rotatably supported by a recess 18 formed in the side wall 17 of the casing 2, and the left end thereof is rotatably supported by a side wall 27 facing the recess 18. There is. The actuator 26 is, for example, an electric motor, and is fitted into the recess 18 of the casing 2 as shown in FIG. 2, and the output shaft 28 is fixed to a shaft hole 29 formed at the right end of the shaft 25. Has been done. The actuator 26 drives the plate damper 8 so as to fully open or fully close the cold air bypass 14 by turning on or off a cold air bypass opening / closing switch provided on the control panel.

Next, the operation of the vehicle air conditioner 1 will be briefly described with reference to FIGS. 1 and 2. When the blower switch and the air conditioner switch are turned on, the blower 3
Air is sent to the evaporator 4 by the. At this time, since the refrigerant is flowing in the evaporator 4, the air is cooled and blown out to the downstream side of the evaporator 4. Then, the winding shaft 23 is driven by the electric motor according to the set position of the temperature adjusting lever, and the air mix film damper 7 moves, whereby the temperature on the downstream side of the casing 2 is adjusted.

On the other hand, when the air outlet mode switching lever is set to the ventilation air outlet mode, the winding shaft 19 is driven by the electric motor and the film damper 6 moves, so that the opening formed in the film damper 6 is moved. The ventilation outlet 10 overlaps the above-mentioned part and the ventilation outlet 10 blows out an airflow toward the upper body of the vehicle occupant. By turning on the cold air bypass opening / closing switch, the output shaft 28 of the actuator 26 rotates, so that the shaft 25 also rotates. For this reason, the plate damper 8 rotates to fully open the cold air bypass 14, so that a predetermined amount of cold air is blown out from the ventilation outlet 10.

Here, in this embodiment, the film damper 6 provided in the casing 2 is used for switching the air outlet mode, the air mix film damper 7 is used for adjusting the air flow rate ratio between the cold air and the warm air, and so on. In addition, the film damper is used to control the main parts. Further, the plate damper 8 is used for controlling an auxiliary portion for opening and closing the cold air bypass 14. Therefore, even if the plate width W of the plate damper 8 is considerably shorter than the plate width w (see FIG. 3) of the conventional plate damper 103, the basic characteristics such as the blown air volume and the blown temperature are not changed. As described above, by reducing the plate width W of the plate damper 8, the recess 18 can be formed in the side wall 17 of the casing 2, and the actuator 26 is mounted in the recess 18. Therefore, the amount of protrusion to the outside of the casing 2 is reduced by x,
Since the physique of the air conditioner 1 can be downsized,
It is possible to reduce the installation space in the passenger compartment of an automobile. Further, in this embodiment, since the film damper 6 and the plate damper 8 are combined and controlled, the recessed portion 18 projecting to the cold air bypass 14 side does not hinder the movement of the film damper 6 and is easy to use. ..

[Modification] In the present embodiment, the actuator 26 of the plate damper 8 is housed in the recessed portion 18, but the actuator for driving the film damper 6 or the air mix film damper 7 from the outside of the casing 2 is a casing. You may store in the recessed part formed in 2. Further, when two or more sets of the damper driving means according to the present invention are provided, the casing may be provided with two or more recesses for accommodating the respective damper driving means. Further, the casing may be composed of two or more members. In this embodiment, the recess is formed in a circular shape, but the recess may be formed in an elliptical shape, an oval shape, or a polygonal shape. In this embodiment, the plate damper 8 may be changed to a film damper. Further, a link mechanism including a lever, a plate, a rod, etc. may be housed in the recess.

[0017]

According to the present invention, since the size of the air conditioner can be reduced, the installation space for the vehicle can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing an air conditioner for an automobile applied to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a main part of an automobile air conditioner applied to one embodiment of the present invention.

FIG. 3 is a schematic view showing a conventional vehicle air conditioner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air conditioner for automobiles 2 Casing 8 Plate damper (damper) 9 Damper drive means 18 Recessed portion 25 Shaft 26 Actuator

Front page continuation (72) Inventor Yasushi Kojima 1-1-1 Showa-cho, Kariya city, Aichi prefecture

Claims (1)

[Claims] 1. A casing having air flowing therein, a damper movably mounted in the casing, and damper driving means for driving the damper from the outside of the casing; An air conditioner for a vehicle, comprising a recessed part that is recessed toward the inside of the casing, wherein the damper driving means is housed in the recessed part.