JPH08126692A - Control of ozone generation apparatus - Google Patents

Abstract

PURPOSE: To enable controlling of the concentration of ozone with a very simple structure by performing an ON-OFF control of the supply of power to an ozone generation electrode with a switch while a blowing means is being driven constantly. CONSTITUTION: In an ozone generation apparatus, a meter relay 5 having an ozone sensor 4 and a switch is attached to an ozone generator 1 in which a blowing means 2 comprising a fan and a pump and an ozone generation electrode 3 are housed. The blowing means 2 and the ozone generation electrode 3 are connected separately to a power source 6 for starting the ozone generator and are supplied with power independently. In other words, the blowing means 2 is supplied directly with power from the power source 6 to be driven constantly whereas the ozone generation electrode 3 is connected to the power source 6 through the meter relay 5 and the supply of power is controlled with the meter relay 5. The ozone sensor 4 is connected to the meter relay 5 and the supply of power is turned ON or OFF optionally by an ozone concentration signal inputted from the ozone sensor 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling an ozone generator that generates ozone having deodorizing and sterilizing effects.

[0002]

2. Description of the Related Art Conventionally, as a method for eliminating an unpleasant odor in a sealed space such as a residence, a residence, a warehouse, a container, etc., in addition to a method using a deodorant such as a chemical aromatic agent or activated carbon, ozone (O ₃ ) Is known. This ozone can be artificially easily obtained by an ozone generator,
Further, this ozone generator is already on the market and used in many places.

FIG. 3 shows a typical structure of this ozone generator. As shown in the figure, this ozone generator integrally includes an ozone generating electrode that generates ozone by silent discharge and the like, and a blower unit including a pump and a fan that supplies the raw material air and discharges the obtained ozone to the deodorization processing space. The ozone sensor,
A meter relay is additionally provided, and the deodorization processing space is made into an ozone atmosphere, and the ozone concentration can be arbitrarily set. For example, when it is desired to maintain the ozone concentration in the deodorization treatment space at 0.10 ppm, the ozone sensor constantly measures the ozone concentration in the deodorization treatment space, and when the ozone concentration exceeds 0.11 ppm, this signal is It is input from the ozone sensor to the meter relay, the power supply from the ozone generator starting power supply to the ozone generator is turned off by the meter relay to stop the generation of ozone, and conversely, the ozone concentration in the deodorization treatment space is 0.
When it falls below 09 ppm, the ozone concentration in the deodorization treatment space is reduced to 0.10 ppm ± 0.01 p by restarting the power supply from the ozone generator starting power source by the meter relay.
It is controlled so as to be maintained within the range of pm.

[0004]

By the way, in such a conventional ozone generator, since power is supplied to the ozone generating electrode and the air blowing means through the meter relay,
Since the blowing means is turned on and off at the same time as the ozone generating electrode, it is difficult to accurately control the ozone concentration. That is, immediately after the power supply is turned on, the amount of raw material air supplied to the ozone generating electrode by the air blowing unit is small, so that the ozone concentration in the ozone generating electrode unit is temporarily increased, and then the air blowing unit is operated. The high-concentration ozone accumulated in the ozone-generating electrode portion is pushed out at once by the blowing of the air, so that the ozone concentration sharply rises. On the other hand, even if the ozone concentration exceeds the set concentration and the power is turned off, the air blowing from the air blowing means does not suddenly stop, so the ozone generation stops with a time delay,
Excessive ozone was released, making accurate concentration control difficult. In particular, the phenomenon remarkably appears in a narrow space such as a vehicle container. Therefore, it may be possible to provide a microcomputer circuit or an inverter circuit for controlling the flow rate, but this causes a new problem that the structure becomes complicated and the weight increases and the cost increases.

Therefore, the present invention was devised in order to effectively solve the above-mentioned problems, and the purpose thereof is to generate a novel ozone capable of accurately controlling the ozone concentration with an extremely simple structure. It is to provide a control method of the device.

[0006]

In order to solve the above problems, the present invention is directed to an ozone generating electrode for generating ozone, a blowing means for blowing ozone generated by the ozone generating electrode into a deodorizing treatment space, and this deodorizing treatment. An ozone sensor that detects the concentration of ozone in the space, and the power supply to the ozone generation electrode is turned on by the concentration detected by this ozone sensor.
In an ozone generator comprising a cut-off device which is turned off, when the ozone concentration in the deodorizing treatment space detected by the ozone sensor exceeds a predetermined concentration while constantly driving the blower, the ozone generating electrode Power to
When the FF is performed and the ozone concentration falls below a predetermined concentration, the power supply is turned on to keep the ozone concentration in the deodorization processing space constant.

[0007]

As described above, according to the present invention, the power supply to the ozone generating electrode is turned off by the breaker while the blowing means is constantly driven.
Since the N-OFF control is performed, the air flow is constantly generated in the ozone generating electrode. Therefore, unlike the conventional method, the ozone generating electrode does not generate high-concentration ozone,
The fluctuation range of the ozone concentration in the deodorization treatment space becomes extremely small, and good control of the ozone concentration can be achieved.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows an embodiment of the ozone generator according to the present invention. As shown in the figure, this ozone generator is one of an ozone sensor 4 and a disconnector in an ozone generator 1 in which a blower 2 including a fan and a pump and an ozone generating electrode 3 are housed as in the conventional case. A meter relay 5 is additionally provided, and ozone is generated from the air or oxygen in the deodorization treatment space, and is ejected into the deodorization treatment space to deodorize the deodorization treatment space. Further, the blower 2 and the ozone generating electrode 3 are separately connected from the ozone generator starting power source 6 and are independently supplied with electric power. That is, the blower unit 2 is directly fed with power from the power source 6 and is always driven, whereas the ozone generating electrode 3 is connected to the power source 6 via the meter relay 5, and the feeding is controlled by the meter relay 5. It has become so. Further, an ozone sensor 4 is connected to the meter relay 5, and the power supply is arbitrarily turned on and off by an ozone concentration signal input from the ozone sensor 4. It should be noted that the blower means 2 may be any one capable of supplying the air in the deodorization treatment space to the ozone generating electrode 3 side, and for example, a sirocco fan, an axial flow fan, a cross flow fan, an air compressor, or the like is used. As the generating electrode 3, a silent discharge method in which a high voltage is applied between the electrodes is used, and the response is better, and ozone can be generated relatively easily. As the ozone generator starting power source, for example, a household AC 100V power source or a vehicle battery power source is generally used.

Next, using such an ozone generator,
An ozone concentration control test in the deodorizing treatment space was conducted.

(Example) Volume 14.2 m ³ , temperature 20
An ozone generator having the above-described configuration was provided in a truck container having a temperature of 75 ° C. and a humidity of 75%, and ozone was generated at an amount of 200 mg / hr while constantly driving a blowing unit. Then, when the ozone concentration in the truck container reaches 0.10 ppm, the power supply to the ozone generating electrode is turned off, and when it is below 0.10 ppm, the power supply to the ozone generating electrode is turned on again. The meter relay was set and the fluctuation of the ozone concentration was measured by the semiconductor ozone concentration sensor.

(Comparative Example) A change in ozone concentration was measured under the same conditions and control method as in Example except that a conventional ozone generator as shown in FIG. 3 was used.

As a result, as shown in FIG. 2, in the embodiment according to the present invention, the fluctuation range is controlled within the range of 0.09 to 0.11 ppm with good controllability.
In the comparative example, the fluctuation range, especially the upper limit value is temporarily 0.2 p.
It can be seen that the concentration rises to around pm, making it difficult to accurately control the concentration.

[0014]

In summary, according to the present invention, the fluctuation range of ozone concentration is extremely small, accurate concentration control can be achieved, and an expensive control circuit is not required, so that the increase in cost can be suppressed. And so on.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of an ozone generator according to the present invention.

FIG. 2 is a graph showing changes in ozone concentration according to the present embodiment.

FIG. 3 is a configuration diagram showing an embodiment of a conventional ozone generator.

FIG. 4 is a graph showing a change in ozone concentration according to a comparative example.

[Explanation of symbols]

 1 Ozone Generator 2 Blower Means 3 Ozone Generating Electrode 4 Ozone Sensor 5 Breaker 6 Power Supply

Claims (1)

[Claims] 1. An ozone generating electrode for generating ozone, a blowing means for blowing the ozone generated by the ozone generating electrode into a deodorizing treatment space, an ozone sensor for detecting the concentration of ozone in the deodorizing treatment space, and the ozone. Depending on the concentration detected by the sensor, power is supplied to the ozone generating electrode
In an ozone generator comprising an N-OFF breaker, the ozone generator generates ozone when the ozone concentration in the deodorization treatment space detected by the ozone sensor exceeds a predetermined concentration while constantly driving the blower. Power to the electrode is O
A method for controlling an ozone generator, comprising performing FF and turning on the power supply when the ozone concentration falls below a predetermined concentration to keep the ozone concentration in the deodorization treatment space constant.