JPH0472550B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an automobile odor removal device for removing odor from air blown into a vehicle interior.

(Prior art and its problems) Conventionally, an automobile odor removal device has been developed, for example, in Japanese Patent Application Laid-open No. 58
-30824, No. 58-11915, etc. are publicly known.

In such conventional methods, only one of the aromatic agent and the deodorant is used as a means for removing foreign odors, for example, the former uses a volatile aromatic agent, and the latter uses a deodorizing agent such as activated carbon. For this reason, air fresheners only mask foreign odors and do not have a deodorizing effect, while deodorants have a deodorizing effect but do not allow you to enjoy the various scents that you can when using air fresheners. Furthermore, there was a problem in that the odor of the deodorant itself could cause discomfort to passengers.

(Object of the Invention) The present invention has been made in view of the above circumstances, and is designed to remove abnormal odors in the passenger compartment by selectively sending an air freshener or deodorizer into the passenger compartment according to the passenger's request. The purpose of the present invention is to provide an automobile odor removal device that has the following features.

(Summary of the invention) In order to achieve the above object, the present invention includes:
A blower duct having both ends opening into a vehicle interior and having a blower interposed in the middle, and a first port of the blower duct which is interposed in the middle of the blower duct and has a first port immediately upstream and immediately downstream of the blower. A first switching valve that is switched to selectively communicate with each other, and a valve chamber that is provided between a first port of the first switching valve and an intake/air outlet that opens at a predetermined position in the vehicle interior. and an on-off valve that opens and closes between the suction/outlet and the first port of the first switching valve, a deodorizer chamber that stores a deodorant, and an aromatic agent chamber that stores an aromatic agent; A second switching valve is provided between both chambers and the valve chamber, and is configured to switch the valve chamber so as to selectively communicate with the deodorant chamber and the fragrance chamber. be.

(Embodiment of the Invention) An embodiment of the present invention will be described below based on the accompanying drawings.

FIG. 1 shows a configuration diagram of the main parts of an automotive air conditioner equipped with the automotive odor removal device of the present invention,
In the figure, reference numeral 1 denotes a blower duct, in which outside air is selectively introduced by an inlet switching damper 2 from an outside air inlet 1a and a vehicle interior air inlet 1b opened at one end (upstream end) of the air duct 1. By rotating the motor 3a of the blower 3 disposed at a predetermined location near the upstream end of the blower duct 1, air inside the vehicle is transferred to each blower opened at the other end (downstream end) of the blower duct 1. Air is blown into the vehicle interior from an outlet (none of which is shown).

A communicating passage 1c is provided at a predetermined location on the side wall of the air duct 1 upstream of the air blower 3, and one end thereof is opened to communicate with the air duct 1. A hole is bored at a predetermined location on the side wall of the air duct 1 on the downstream side of the air blower 3, a hollow cylindrical pipe 4 is fitted into the hole, and the opening axis of the opening 4a at one end of the pipe 4 is It is bent so as to be substantially parallel to the axis of the ventilation duct 1 and open in a direction opposite to the ventilation direction (to the left in the figure), so that the air flowing inside the ventilation duct 1 can be easily taken in. The other end openings of the communication passage 1c and the pipe 4 open as a common communication passage 5, but a first switching valve 6 is provided at the branching part between the communication passage 1c, the pipe 4, and the communication passage 5. The switching valve 6
The first port 6a is connected to one end of the communication path 5, the second port 6b is connected to the other end of the communication path 1c, and the third port 6c is connected to the other end of the pipe 4. The first port 6a, that is, the communication passage 5, is selectively communicated with either the communication passage 1c, which is immediately upstream of the blower 3, or the pipe 4, which is immediately downstream. The other end (end opposite to the switching valve) of the communication passage 5 communicates via a hose 7 with one end opening 11a of a case body 11 of an automobile odor removal device 10, which will be described later.

As shown in FIG. 2, the automobile odor removal device 10 has a case body 11 made of, for example, a synthetic resin member, which has a substantially housing shape, and the case body 11 has a partition plate 12.
It is partitioned into a solenoid valve fitting chamber (valve chamber) 13 and an air circulation chamber 14 by.

The solenoid valve fitting chamber 13 is further divided into first to third small chambers 13a, 13b, 1 by two partition plates 15, 16.
3c, and communication holes 15a, 16a are formed approximately in the center of each of these partition plates 15, 16. On one side of the partition plates 15, 16 (upper side in the figure), along the periphery of each communication hole 15a, 16a, there is a valve seat member 17 made of, for example, rubber, which forms the valve seat surface of a solenoid valve 20, which will be described later. 18 is installed.

Openings 11a and 11b are formed at predetermined locations at one end and the other end of the electromagnetic valve fitting chamber 13, that is, at predetermined locations in the first small chamber 13a and the third small chamber 13c, respectively. The section 11a is connected to the communication path 5 via the hose 7, and the opening section (intake/outlet) 11b of the third small chamber 13c is opened at a predetermined location in the vehicle interior through a duct or the like (not shown). It's becoming like that. Said second small room 1
A pair of partition walls 30, 31 parallel to the partition plates 15, 16 are arranged inside the partition 3b. A predetermined gap exists between these partition walls 30 and 31, and between one partition wall 30 and one partition plate 15 and between the other partition wall 31 and the other partition plate 16. There are predetermined gaps 32 and 33, respectively. These gaps 32 and 33 are formed by the partition plate 12.
It communicates with the air circulation chamber 14 through circulation ports 12a and 12b provided in the air circulation chambers 12a and 12b, respectively.

A valve body guide hole 34 is provided between the central portions of the partition walls 30 and 31, and is concentric with the communication holes 15a and 16a and has both end faces open.
4, a valve plate 22b, which will be described later, is slidably fitted in an airtight manner.

A solenoid valve (opening/closing valve) 20 is fitted into the first small chamber 13a and the second small chamber 13b of the solenoid valve fitting chamber 13. The solenoid valve 20 is a normally closed type, and the solenoid 2
1 is off, one valve plate 22a disposed at a predetermined location on one end of the rod 22 is turned off.
7, the other valve plate 22b disposed at the other end of the rod 22 comes into contact with the other valve seat member 18 to close the communication holes 15a and 16a, resulting in a closed valve state, and the solenoid 21 When turned on, the valve plates 22a and 22b separate from the valve seat members 17 and 18, respectively, and open the communicating holes 15a and 16a, respectively, to be in an open state. Note that the outer peripheral surface of the rod 22 and the communication hole 1
A passage gap exists between the inner peripheral surface of 5a and the inner circumferential surface of 5a.
The solenoid 21 and one valve plate 22a are located in the first small chamber 13a, and the other valve plate 22b is fitted into the guide hole 34 in the second small chamber 13b. Even when the other valve plate 22b contacts the other valve seat member 18 and enters the valve closed state,
The other valve plate 22b maintains the fitted state with the guide hole 34, and the one gap 32 and the other gap 33
The guide holes 34 are arranged so that they do not communicate with each other through the guide holes 34. The third small chamber 13c has a regulating valve 2.
3 is provided, and a communication hole 16 is provided through the regulating valve 23.
a and the opening 11b are connected, and by operating the operator 23a, the passage opening area between the communication hole 16a and the opening 11b can be adjusted steplessly.

In one corner of the air circulation chamber 14, mutually independent small rooms 24 and 26 are provided, one of which is a deodorant room.
Deodorant 25 is in 24, and the other small room (air freshener room)
A fragrance 27 is housed in each of the containers 26 . These deodorant chamber 24, air freshener chamber 26 and air circulation chamber 14
A second switching valve 28 is interposed between the second switching valve 28 and the second switching valve 28.
The deodorant chamber 24 and the air freshener chamber 26 are controlled by the switching valve 28.
Either one of them can be selectively communicated with the air circulation chamber 14. This second switching valve 28
communicates with the first switching valve 6, and for example, as shown in FIG. When the circulation chamber 14 and the deodorant chamber 24 communicate with each other and the communication passage 5 and the pipe 4 communicate with each other by the first switching valve 6 (in the case of the dashed line), the air circulation chamber 14 and the fragrance chamber 24 communicate with each other. 26 are in communication with each other.

Note that the first switching valve 6 and the second switching valve 2
8. Each solenoid 21 has an operating section (none of which is shown) and is mechanically or electrically controlled.

(Function) Next, the function of the automobile odor removal device having the above structure will be explained.

First, the blower 3 is operated and the solenoid 21 is turned on to open the solenoid valve 20.

When performing a deodorizing effect in this state, the first and second switching valves 6 and 28 are switched as shown by solid lines in FIG. 3 to communicate between the communication passage 5 and the communication passage 1c.
The communication path 5 and the pipe 4 are cut off, the deodorant chamber 24 and the air circulation chamber 14 are communicated with each other, and the fragrance chamber 26 and the air circulation chamber 14 are cut off.
As a result, the air in the vehicle interior flows from the opening 11b at the other end of the case body 11 to the regulating valve 23 and to the communication hole 16 at one end.
a into the gap 33, and further into the air circulation chamber 14 through one of the circulation ports 12b, and the volatile components of the deodorant 25, which is vaporized and filled in the air circulation chamber 14, are returned to the other side. The first small chamber 1 passes from the opening 12a through the gap 32 and the other communication hole 15a.
3a, and one end opening 11a of the case body 11.
The air flows from the air through the hose 7, the communication path 5, and the first switching valve 6 to the communication path 1c, which is immediately upstream of the blower 3, and then from the outside air inlet 1a or the cabin air inlet 1b to the inlet switching damper 2. The air is sent into the ventilation duct 1 by the ventilation blower 3 together with the air adjusted and introduced by the duct 1, and is adsorbed to the malodor generated adhering to the evaporator (not shown) installed in the middle of the duct 1. Alternatively, the air is blown into the vehicle interior together with air from an air outlet (not shown) opened at the other end of the duct 1 to adsorb and deodorize foreign odors in the vehicle interior.

On the other hand, when performing an aromatic effect in this state, the first and second switching valves 6 and 28 are switched as shown by the dashed line in FIG. 3 to cut off the communication path 5 and the communication path 1c. The communication path 5 and the pipe 4 are communicated with each other, the deodorant chamber 24 and the air circulation chamber 14 are cut off, and the fragrance chamber 26 and the air circulation chamber 14 are communicated with each other. As a result, air adjusted by the inlet switching damper 2 and introduced by the blower 3 from the outside air inlet 1a or the vehicle interior air inlet 1b enters the pipe 4 through the opening 4a at one end, and the air enters the pipe 4 through the opening 4a, and the air enters the pipe 4 through the opening 4a. through the communication path 5, hose 7, case body 1
1 enters the first small chamber 13a through the opening 11a at one end, enters the air circulation chamber 14 through the gap 32 through the other communication hole 15a, and the other communication port 12a, and vaporizes and fills the air circulation chamber 14. The volatile components of the aromatic agent 27 that are
flows into the gap 33, and then flows into one of the communication holes 1
6a, and the case body 11 via the regulating valve 23.
The air is blown into the vehicle interior from the other end opening 11b, thereby masking any abnormal odor in the vehicle interior.

Note that the strength of the deodorizing or aromatic effect on the vehicle interior can be freely adjusted using the adjustment valve 23.

(Effects of the Invention) As detailed above, according to the present invention, there is provided a blower duct which opens into the vehicle interior at both ends and has a blower interposed in the middle, and a blower duct which is inserted in the middle of the blower duct and which a first switching valve configured to selectively connect one port to an immediately upstream portion and a directly downstream portion of the blower; and a suction valve that opens between the first port of the first switching valve and a predetermined position in the vehicle interior. an on-off valve disposed in a valve chamber provided between the suction/air outlet and a first port of the first switching valve; and a deodorizer containing a deodorizer. A deodorant chamber, an aromatic agent chamber storing an aromatic agent, and a deodorant chamber provided between these chambers and the valve chamber, and selectively allowing the valve chamber to communicate with the deodorant chamber and the aromatic agent chamber. Since the second switching valve is provided, it is possible to selectively perform a deodorizing action or an aromatic action as required.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of the main parts of an automobile air conditioner equipped with the odor removal device of the present invention, Fig. 2 is a block diagram showing an embodiment of the odor removal device of the present invention, and Fig. FIG. 3 is a diagram showing a connection mode of the switching valves 6 and 28 shown in FIG. 1... Air duct, 3... Air blower, 6... First switching valve, 6a... First port of the first switching valve, 10
...Off-odor removal device for automobiles, 11b...Intake and outlet for vehicle interior, 13...Valve chamber, 20...Opening/closing valve, 24...Deodorant chamber, 25...Deodorant, 26...Fragrance compartment, 27...Fragrance, 28...Second switching valve.

Claims (1)

[Claims] 1. A ventilation duct with both ends opening into the vehicle interior and a ventilation blower interposed in the middle, and a first port of the ventilation duct installed in the middle of the ventilation duct, with the first port immediately upstream and downstream of the ventilation blower. A first switching valve that is switched to selectively communicate with the first switching valve, and a valve chamber provided between a first port of the first switching valve and an intake/outlet opening at a predetermined position in the vehicle interior. and the suction/outlet and the first switching valve
An on-off valve that opens and closes between the ports, a deodorizer chamber that stores a deodorant, and an air freshener chamber that stores an air freshener.
A second switching valve provided between these two chambers and the valve chamber and configured to switch the valve chamber so as to selectively communicate with the deodorant chamber and the air freshener chamber. Abnormal odor removal device.