JPH05221241A - Air conditioning deodorizer device - Google Patents

Abstract

PURPOSE:To eliminate waste consumption of a deodorant or the like by attaining after-setting optionally and easily in an air conditioning device. CONSTITUTION:The point end of a supply pipe 12B, extended from a cassette 11 internally provided with deodorant or the like, is opened to the inside of an air conditioning duct 21, to provide a solenoid valve 13B in the supply pipe 12B. A current sensor 15 is set up in a power feed line 31 of an air blower 22, and a valve control circuit 14 opens the solenoid valve 13B at the time of detecting a current to supply the deodorant or the like into the air conditioning duct 21. Since the supply pipe 12B and the current sensor 15 can be easily after-set up and also the deodorant or the like is supplied after confirming electrification to the blower 22, waste consumption is eliminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioning deodorizing device for preventing an offensive odor of air conditioning air.

[0002]

2. Description of the Related Art In an air conditioner for a vehicle or the like, when it is used for a long period of time in the inside air circulation, the body odor and cigarette odor of an occupant adhere to the evaporator and other equipment inside the air conditioning duct and the duct wall to cause air conditioning. May give offensive odor. Therefore, in order to prevent this, a deodorizing device that supplies a deodorant into the air conditioning duct is provided.

[0003]

Since such a deodorizing device is often manufactured separately from the air conditioner and optionally installed, the operation of the deodorizing device is conventionally operated by receiving a signal to turn on the ignition switch. However, if applied to a recent air conditioner that starts the blower blower after warming up after various sensors work after turning on the ignition switch, there is a problem that wasteful consumption of deodorant is large. ..

If the operation of the deodorizing device is started in accordance with the start of the blower blower, the above problem does not occur, and it is considered that the start signal of the deodorizing device is obtained from the blower starting switch, etc.
A signal is not always available from such a start switch, and there is a demand for a deodorant device that can be easily retrofitted to various air conditioners and can reduce the consumption of deodorant.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an air conditioning deodorizing device which can be optionally retrofitted and installed in an air conditioning device without wasteful consumption of deodorant.

[0006]

To explain the constitution of the present invention, the tip of a supply pipe 12B extending from a box 11 having a deodorant or fragrance therein is opened in the air-conditioning duct 21, and the above-mentioned supply pipe is provided. 12B has a valve body 1 for opening and closing it.
3B is provided and the blower blower 2 in the air conditioning duct 21
A valve control means 1 is provided separately from the drive system of No. 2 for detecting the activation of the blower blower 22 and for opening the valve body 13B when the activation of the blower blower 22 is detected.
4 is provided.

[0007]

In the apparatus having the above construction, the blower blower activation detecting means 15 is provided separately from the drive system thereof, so that the detecting means 15 can be easily installed as an option in a ready-made air conditioner. With the blower blower 22
Since the valve body 13B of the supply pipe 12B is opened by detecting the activation of the deodorant, the deodorant and the like are not wasted.

[0008]

FIG. 1 shows an example in which the deodorizing device 1 of the present invention is attached to an air conditioner 2, and an air blower 22, an evaporator 23, and a heater core 24 are provided in the air conditioner duct 21 from an upstream position, and the air conditioner duct 21 is provided. A defroster outlet 25A, a foot outlet 25B, and upper outlets 25C, 25D, 25E on the center and left and right sides are provided in the downstream portion of the.

When the blower blower 22 rotates, the inside or outside air selected by the inside / outside air switching damper 26 is sucked into the air conditioning duct 21 and sent to the evaporator 23.
The air that has been cooled and dehumidified by the evaporator 23 has a part thereof depending on the opening degree of the air mix damper 27.
To be heated and then mixed in the downstream portion to be conditioned air having a predetermined temperature.

The air conditioning air is blown by the Max Cool damper 28 and the mode switching damper 29 into each of the outlets 25A to 25A.
E is selected and supplied to the vehicle interior. Blower blower 2 above
The driving motor 22a of No. 2 is driven by the driving circuit 3 by the power supply line 31.
When connected to 0 and supplied with power, the drive circuit 30 controls the rotation speed of the blower blower 22 based on the signals of the sensors inside and outside the vehicle. A current sensor 15 is provided on the power supply line 31.

As the current sensor 15, a Hall element or a sensor utilizing electromagnetic induction can be used. An example of the latter is shown in FIGS. 2 and 3. In the figure, the sensor main body 150 is formed of a resin material and has a circular opening 151 in an upper half portion protruding in a semicircular shape, and the above-mentioned power supply line 31 is inserted into this. The opening 1
A detection coil 154 is wound around the main body around 51, and when a current flows through the feeder line 31, an electromotive force is generated in the detection coil 154 by the magnetic field generated at this time.

The sensor body 150 has mounting holes 1 on both sides of the lower end.
It is fixed to the vehicle panel around the blower blower 22 in the vehicle compartment by 53, and the output of the detection coil 154 is obtained at the connector 152 at the center of the lower end of the main body.

The current sensor 15 can be easily attached to the power supply line 31. That is, the feeder line connector 311 connected to the blower blower 22 in the instrument panel
Pull out the + terminal 312 from (Fig. 4 (1)),
This is inserted into the opening 151 of the current sensor 15 and mounted again on the feeder line connector 311 (FIG. 4 (2)).

The deodorizing device 1 has a cassette 11 containing a deodorant or a fragrance. An air introducing pipe 12A is connected to the upstream side of the cassette 11 and a supply pipe 12B is connected to the downstream side thereof. .. A solenoid valve 13A is provided in the air introduction pipe 12A, the tip of which extends into the air conditioning duct 21 and opens immediately after the blower blower 22. Further, the supply pipe 12B is provided with a solenoid valve 13B, and the tip of the solenoid valve 13B reaches the air-conditioning wind upper outlets 25C to 25E of the center and the side.
1 extends to a three-way branch portion and is open.

The solenoid valves 13A and 13B are opened and closed by the output of the valve control circuit 14, and the output signal of the current sensor 15 is input to the valve control circuit 14.

When the blower blower 22 is energized and rotates to start blowing air, the current of the feeder 31 is changed to the current sensor 15
Detects and outputs an output signal. Upon receiving this output signal, the valve control circuit 14 opens the solenoid valves 13A and 13B,
The air sent from the blower blower 22 is the air introduction pipe 12A.
Then, the deodorant or the like is introduced into the cassette 11 through the supply pipe 12B and is supplied to the three-way branch portion together with the introduced air.
Thus, the offensive odor of the conditioned air blown from the upper outlets 25C to 25E toward the upper half of the occupant's body is removed.

FIG. 5 shows the control procedure of the valve control circuit 14 when the deodorant is used. When the current is detected by the blower drive, the solenoid valves 13A and 13B are opened for a certain time, for example, 20 seconds after the blower is activated. The offensive odor immediately after the start of blowing, which is particularly likely to occur, is prevented.

FIG. 6 shows a control procedure of the valve control circuit 14 when the fragrance is used. After the current is detected by driving the blower, the solenoid valves 13A and 13B are opened for 20 seconds to mix the fragrance with the conditioned air. After the elapse of 20 seconds, the solenoid valves 13A and 13B are closed and paused. Then 2
After a lapse of a minute, the solenoid valve 13 is controlled by the 1 / f fluctuation control.
Open and close A and 13B intermittently.

This fluctuation control controls the opening and closing of the solenoid valves 13A and 13B by a 1 / f random number whose output power spectrum is inversely proportional to the frequency f, as shown in FIG. That is, as shown in FIG.
When a plurality of sets of 1 and the stop time T2 are determined, the frequency f is determined for each set, so that the solenoid valves 13A and 13A are controlled according to the supply / stop time of the frequency f sequentially designated by the random number.
Open and close B. In this way, the fragrance is 1 /
By supplying intermittently with f random numbers, it is possible to give aroma to the occupants with appropriate freshness.

According to this embodiment, the air introduction pipe 12A and the deodorant supply pipe 12B and the current sensor 15 can be easily installed without any major modification of the air conditioner. It can be installed as an option in the air conditioner. Further, since the deodorant is supplied after the air blowing is actually started, there is no wasteful consumption of the deodorant.

Instead of detecting the start of air blowing by the current sensor, a structure in which an air pressure sensor or an air volume sensor is provided immediately after the air blower may be adopted. A semiconductor pressure sensor can be used as the wind pressure sensor, a switch that operates by moving the pressure receiving plate that receives the wind pressure can be used, and a sensor that detects the output difference between the temperature sensor that receives the wind and the temperature sensor that does not receive the wind can be used as the air volume sensor. it can.

FIG. 9 shows another embodiment. As the cassette 11, there are provided two kinds of cassettes 11A containing deodorant and 11B containing fragrance. Solenoid valve 13A before and after the air passage,
13B and 13C, and as shown in the control flowchart of FIG. 10, the solenoid valve 13A,
13B is opened to supply the deodorant in the cassette 11A into the air-conditioned air stream. When the above 20 seconds have elapsed, the solenoid valves 13A and 13B are closed and paused, and when 2 minutes have passed thereafter, the solenoid valves 13A and 13C are intermittently opened / closed by the 1 / f fluctuation control to open the fragrance of the cassette 11B. Is supplied to the air-conditioned air stream.

[0023]

As described above, according to the air-conditioning deodorant system of the present invention, it is possible to install the option in various air-conditioning systems and prevent waste of deodorant or fragrance.

[Brief description of drawings]

FIG. 1 is a system diagram of an air conditioner equipped with a deodorizing device.

FIG. 2 is a front view of a current sensor.

FIG. 3 is a side view of a current sensor.

FIG. 4 is a perspective view of a feeder line terminal.

FIG. 5 is a control flowchart of a valve control circuit.

FIG. 6 is a control flowchart of a valve control circuit.

FIG. 7 is a power spectrum of 1 / f random numbers.

FIG. 8 is a time chart of aroma supply and stop.

FIG. 9 is a main part system diagram showing another embodiment.

FIG. 10 is a control flowchart in another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air-conditioning deodorizer 11 Cassette (box) 12B Supply pipe 13B Electromagnetic valve (valve) 14 Valve control circuit (valve control means) 15 Current sensor (start detection means) 2 Air-conditioner 21 Air-conditioning duct 22 Blower blower

Claims (1)

[Claims] 1. A supply pipe extending from a box body in which a deodorant or fragrance is installed is opened in an air conditioning duct, and a valve body for opening and closing the supply pipe is provided in the air supply duct, and the air conditioning duct. An air conditioner characterized by being provided with a means for detecting the activation of the blower blower, separately from the drive system of the blower blower inside, and with a valve control means for opening the valve body when the activation of the blower blower is detected. Deodorizer.