JPS5814088Y2 - Automotive air conditioner - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an air conditioner for an automobile, and in particular to an air conditioner for an automobile that prevents abnormal odors from blowing out into the interior of the vehicle immediately after the cooling operation is started after the automobile has been left in the hot sun for a long time. .

Air conditioners installed in passenger cars generally have an evaporator and heater core built into the air conditioning duct.
Outdoor or indoor air sucked in by the floor undergoes heat exchange as it passes through the evaporator and heater core, and then is distributed to the ventilator, defroster, and indoors.

It is known that when a passenger car equipped with such an air conditioner is operated for cooling after being left in the hot sun for a long time, an unpleasant odor is generated for a while.

The present invention is an attempt to solve such problems, and is an automotive vehicle that is capable of supplying odor-free cold air to the interior of a vehicle immediately after the cooling operation starts, even if the vehicle is left in the hot sun for a long time. The purpose is to provide air conditioning equipment.

According to the present invention, the above-mentioned object is to provide an air conditioner to the downstream side of the evaporator, in which an evaporator is incorporated in the flow path of an air conditioning duct that can take in air from the outdoor side or air from the indoor side via a blower. This is achieved by providing a deodorizing damper that can selectively open and close the flow path of the duct.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an air conditioner for an automobile according to the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 indicates an air conditioning duct, and an air intake pipe 2 is connected to the left end of the air conditioning duct 1 in the figure.
One end 2a of the air intake pipe 2 is opened to the outside of the room, and the other end 2b is opened to the inside of the room.

Further, an intake rod bar 3 is provided in the center of the air intake pipe 2 so as to be rotatable around a pin 4, so that air from the outside of the room or air from the inside of the room can be selectively taken into the air conditioning duct 1. .

Thus, the cross-sectional size of the flow path is partially enlarged in the air conditioning duct 1, and an evaporator 5 is installed on the upstream side, and a heater core 6 is installed on the downstream side.

The evaporator 5 is one of the elements constituting the cooling cycle.
It is installed between a compressor and an expansion valve of a cooling circuit (not shown).

A floor γ is arranged in the flow path on the upstream side of the evaporator 5, and a floor γ is arranged to transfer air from the outdoor side or the indoor side to the evaporator 5.
Air can be blown towards.

On the other hand, in the flow path on the upstream side of the heater core 6, an air mix damper 8 is rotatably provided around a pin 9, and the amount of air passing through the heater core 6 is controlled by the degree of opening of the air mix damper 8. Be adjusted.

Further, a distribution pipe 10 is connected to the outlet side of the air conditioning duct 1, and the heat-exchanged air is transferred to an instrument panel ventilator 11.
．． The air is supplied to each of the defroster 12 and the indoor population 13, and the amount of air supplied to each is selected by distribution dampers 14 and 15, and the air volume is adjusted.

Therefore, according to the present invention, a deodorizing damper 16 is incorporated in the flow path on the downstream side of the evaporator 5, and in the illustrated embodiment, the deodorizing damper 16 is a two
Consisting of damper pieces 17, 18, each damper piece 17, 1
8 is pivotably mounted at its outer end by a pin 19.20.

These damper pieces 1γ, 18 can move around pins 19, 20 between a fully closed position shown by a solid line and a fully open position shown by an imaginary line, and these opening/closing drives are performed by a driving actuator. This is achieved by 21.

That is, the actuator 21 has an operation link 22 that can be reciprocated by air pressure acting on a diaphragm or bellows, and this link 22 is connected to the damper piece 1T via an arm 23 and directly to the damper piece 18 as shown in the figure. has been done.

Therefore, by driving the actuator 21, the operating link 2
By moving 2 in the axial direction, the damper pieces 17, 18 can be opened and closed.

FIG. 2 shows a control circuit for the drive actuator 21. In the figure, a conduit 24 connected to a vacuum source is connected to the input side of the actuator 21, and an lenoid 25A is opened and closed on this conduit. An on-off valve 26 is incorporated.

In addition, in the same figure, the power supply circuit includes an air conditioner switch 21.
, a thermostand 28, a relay 29 and a blower fan switch 30 are connected in series, and the renoid 25 and the power supply circuit are connected to a timer 31 and a switch 32.
are connected in parallel to the power supply circuit via.

In the electric circuit described above, the own VEIN-O of the floor T
When the thermostat 28 that performs FF is turned on and the fan switch 30 of the blower 7 is turned on,
When the near cons inch 27 is turned on, the relay 29 is energized and the relay contact is closed.

Then, the lunoid 25B is energized, the on-off valve 26 is opened, the drive actuator 21 is connected to the vacuum source, the deodorizing damper pieces 1γ and 18 are moved to the solid line position in FIG. Temporarily close the road.

Then, the air supplied from the blower T to the evaporator 5 and cooled is passed through a deodorizing damper piece 1γ made of activated carbon,
18, odor components are absorbed and odorless cooled air is supplied toward the downstream side.

When the air conditioner switch 27 is turned on, the switch 32 is also turned on and the timer 31 is energized, and after a certain period of time, the timer 31 is opened, deenergizing the renoid 25A and activating the drive actuator 21. Then, the deodorizing damper pieces 17, 1B are opened to the position shown by the development line in FIG.

As is clear from the above explanation, according to the present invention, a deodorizing damper is provided downstream of the evaporator built into the air conditioning duct, and the deodorizing damper is installed immediately after cooling operation after a car has been left in the hot sun for a long time. Since the flow path is closed and the air conditioner runs for a while, air with unpleasant odor is no longer supplied into the room from inside the air conditioning duct, which makes the driver feel uncomfortable. This can be prevented.

In addition, the deodorizing damper is moved only for a certain period of time immediately after the start of cooling operation, and the deodorizing damper is opened after a certain period of time, so there is no problem during steady operation of the air conditioner, and the deodorizing function of the deodorizing damper is further improved. can be maintained over a long period of time.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing an embodiment of an air conditioner for an automobile according to the present invention, and FIG. 2 is an operating circuit diagram of a deodorizing damper. 1... Air conditioning duct, 2... Air intake pipe, 3... Inlet damper 5... Evaporator, 6... Heater core 1... ...Floor-8... Air mix damper 10...
...Distribution pipe, 16...Deodorizing damper i? , 18
・・・・・・Damper piece, 19, 20・・・Pin 2
1... Drive actuator 22... Operation link, 23... Arm.

Claims (1)

[Claims for Utility Model Registration] 1. An evaporator built into the flow path of an air conditioning duct that can take in air from outside the room or air from inside the room through a blower, in which the air conditioning duct is installed downstream of the evaporator. 1. An air conditioner for an automobile, characterized in that a deodorizing damper is provided that can selectively open and close the flow path of the air conditioner. 2. The air conditioner for an automobile according to claim 1, wherein the deodorizing damper is composed of two deodorizing damper pieces that can be rotated around one outer end, and can be selectively opened and closed by a driving actuator. Device. 3. The air conditioner for an automobile according to claim 1, which is constructed of activated carbon as a deodorizing damper.