JPH03121073A - Ozonizer - Google Patents

Abstract

PURPOSE:To effectively generate a necessary constant ozone quantity by installing a temperature sensor for detecting the temperature in a space in which an ozonizer is positioned and a voltage varying means for controlling the voltage of a high voltage generator at high voltage under a high temperature. CONSTITUTION:Kitchen dusts are put into an inner box 9, and outside air is sucked from a suction port 26 by a suction fan 25, and introduced into an ozonizer 22 from a suction port 23, and the mixed gas is generated with the ozone generated in an ozonizer 13 applied with high voltage by a high voltage generator 16. In this case, the change of the ozone concentration due to temperature is large. The high voltage generator 16 is equipped with a transistor 17, transformer 18, and an oscillation circuit 19, wherein a temperature sensor 20 for detecting temperature change is installed. The pulse width output from the oscillation circuit 19 is changed by the change of resistance due to temperature, and the voltage which changes in the primary side oscillation coil 21 through the transistor 17 varies, and also the high voltage value on the high voltage generating coil side of the transformer 18 is varied, and the ozone generation quantity is adjusted.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an ozone generator that is incorporated into a kitchen waste storage cabinet or the like and has a deodorizing function that uses ozone to remove unpleasant odors from food waste and other kitchen waste.

BACKGROUND OF THE INVENTION In general, if food waste such as food waste is placed in a storage cabinet and left for two to three days, it will rot and emit a foul odor. The stench filled the kitchen and made me feel uncomfortable.
Even if such a kitchen waste storage is installed outside, the user will feel disgusted when the lid is opened, which will seriously impede a comfortable life. This tendency becomes especially strong in the summer when the temperature rises. Deodorizing methods to remove these odors include:
Methods that have been considered include methods using adsorbents such as activated carbon, methods of masking unpleasant odors with aromatics such as fragrances, and methods of burning at higher temperatures. However, although methods using adsorbents such as activated carbon have an excellent initial deodorizing effect, they are not sustainable and require frequent replacement with new ones.
This had the problem of high running costs. Furthermore, masking methods using aromatic agents such as fragrances mask the bad odor with another odor, and some individuals may perceive the odor as a bad odor, which does not eliminate the root cause. In addition, the method of burning at high temperatures requires a large amount of fuel, resulting in very high running costs.
Due to the high temperature treatment, even nitrogen in the air is oxidized, creating toxic nitrogen oxides, which is a problem.

In order to solve the above problems, recently
As in Japanese Patent No. 361, a method has been devised in which ozone is generated by an ozonizer by applying a high voltage, and ozone is used to oxidize and decompose bad odors to deodorize them.

Problems to be Solved by the Invention However, in the above-mentioned Japanese Utility Model Publication No. 60-24351,
Since there is no control function for ozone concentration and the potential and frequency of the high-voltage power supply are always constant, the ozone concentration is low in the summer when the temperature is high and food waste is particularly prone to decomposition, and in the winter when decomposition is relatively suppressed and there is little odor. will generate high concentrations of ozone. That is, when the humidity is kept constant, the temperature and the amount of ozone generated show a relationship as shown by curve (8) in FIG. Therefore, if the ozone generation concentration is determined as an initial setting value in accordance with the odor concentration generated in winter, the ozone generation concentration will decrease in summer when the odor concentration is high, and no deodorizing effect will be obtained. In addition, if the ozone generation concentration is determined in response to the odor concentration generated in the summer, a larger amount of ozone generation than necessary will be obtained in the winter, and a high concentration of ozone that cannot be decomposed by the ozone decomposition catalyst will be generated. There is a possibility of leakage outside the storage area. Ozone poses a health and safety problem because it has an adverse effect on the human body when it reaches high concentrations.

In view of the above-mentioned problems, the present invention provides an ozone generator for use in a kitchen waste storage with a deodorizing device that can effectively generate a necessary constant amount of ozone and deodorize food waste. .

``Means for Solving the Problems'' In order to solve the two-pronged problem, the ozone generator of the present invention has the following features:
It consists of an ozonizer and a high voltage generator that applies a high voltage to the ozonizer, a temperature sensor that detects the temperature of the space where the ozonizer is located, and a voltage generated by the high voltage generator by this temperature sensor. and voltage changing means for controlling the voltage to a high voltage under high temperature.

Function: With the above-described configuration, the temperature sensor detects changes in the temperature of the space where the ozonizer is located, and the voltage generated by the high voltage generator is controlled to be a high voltage at high temperatures. By increasing the voltage generated under certain conditions and decreasing it under low temperature conditions, the amount of ozone generated increases as the temperature increases and decreases as the temperature decreases. This reduces the possibility of leakage and improves safety.

EXAMPLE Hereinafter, as an example of the present invention, a storage with a deodorizing function equipped with an ozone generator will be described with reference to FIGS. 1 to 3.

Reference numeral 1 denotes a storage with a deodorizing function, which is composed of an opening/closing lid 3 that opens and closes an opening 2, an outer box 4, and a top flange 5.

In the interior 6 of this kitchen waste storage 1, there are commercially available polyethylene bags 7.
The inner box 9 is clamped and inserted with the clamping ring 8, alumina is used as the dielectric material 1o, and Zr is placed on the discharge electrode 11 side.
The induction electrode 12 is an ozonizer 13 made of Ruthenia material that also serves as a heater, and an ozone decomposition catalyst 1 that also serves as a deodorizer and whose main components are titanium oxide and manganese oxide.
4 and exhaust fins 15.

The ozonizer 13 is electrically connected to a high voltage generator 16, so that an AC high voltage is applied between the discharge electrode 11 and the induction electrode 12, and the induction electrode 12 side is connected to the ground. By applying a voltage of about 100V through a separate outlet, it can also be used as a heater. The resistance value of the heater at this time is approximately 8Ω, and the surface temperature is approximately 400Ω.
I set it up to be.

Still, the high voltage generator 16 consists of a transistor 17, a transformer 18, and an oscillation circuit 19.
A temperature sensor 2o that detects temperature changes is wired inside. This temperature sensor 2o is installed in the same space where the ozonizer 13 is located, and detects the temperature change in that space.The output pulse width from the oscillation circuit 19 changes due to the resistance change due to the temperature, and the output pulse width is changed via the transistor 17. −
The voltage flowing to the next oscillation coil 21 changes. This change also changes the value of the high voltage on the high voltage generating coil side of the transformer 18, and constitutes the voltage changing means of the present invention.

In addition, the ozone generator section 2 in which the ozonizer 13 is incorporated
A screen 24 is provided at the air intake port 23 to prevent dust from entering. Furthermore, a small intake fan 26 is attached to the center of the opening/closing lid 3, which sucks outside air through the intake port 26 and transfers it to the kitchen waste placed in the bottom of the polyethylene bag 7 of the inner box 9. It is designed to blow outside air.

In addition, the top flange 6 forms a flange edge 27 that is narrower than the opening edge of the inner box 9, so that the odor inside the inner box 9 is passed through the duct 28 formed by the inner box 9 and the outer box 4 to the air intake port. It seems to lead to 23.

The operation of the deodorizing storage 1 constructed as described above will be described below with reference to FIGS. 1 to 3.

First, insert the commercially available polyethylene bag 7 into the inner box 9,
It is fixed with a clamp ring 8 and placed at a fixed position inside the deodorizing storage 1. Then, the top flange 6 is folded down and the opening/closing lid 3 is closed. Then, the power cord 29 is plugged into an outlet, and the intake fan 26, exhaust fan 15, and ozonizer 13 are operated.

Therefore, when the kitchen waste is put into the inner box 9, the intake fan 25
Outside air is sucked in through the suction 026 and blown onto the kitchen waste placed in the bottom of the polyethylene protrusion of the inner box 9. Kitchen waste usually undergoes putrefaction and fermentation due to oxidation and bacteria, producing a bad odor. Moisture and temperature are essential for this putrefaction and fermentation, and hot and humid conditions promote the occurrence of bad odors.

However, as mentioned above, drawing relatively dry outside air into the refrigerator interior 6 using the intake fan 25 and blowing it onto the surface of the food waste not only lowers the humidity inside the refrigerator 6, but also causes the surface of the food products to have a dry film. It also has the effect of suppressing bad odors emitted from the inside of kitchen waste.

The outside air blown onto the surface of the kitchen waste, together with the odor, is then transferred to the inner box 9.
It ascends the opening edge along the side wall, passes inside the 7-lung edge 27 and through the duct 28, and enters the ozone generator 22 through the intake port 23. In the ozone generator 22, a high voltage generator 16,
A mixed gas is generated with ozone generated from the ozonizer 13 to which a high voltage is applied. Ozone and odor react even in a mixed gas, oxidizing the odor and changing it to something with less odor, but generally the reaction in a mixed gas is slow. The deodorizing effect of ozone is achieved when ozone is decomposed into oxygen and oxygen radicals, and the oxygen radicals react with malodorous components. Therefore, most of the deodorization takes place on the surface of the ozone decomposition catalyst 14. Moreover, since excess odor is adsorbed by the catalyst 14 and deodorized, no malodorous components remain in the gas exhausted by the exhaust fan 16.

However, since the discharge of the ozonizer 13 tends to become unstable in a humid atmosphere, it is necessary to heat the surface of the ozonizer 13 by applying a voltage that uses the dielectric electrode 11 as a heater in a separate circuit. This avoids dew condensation on the electrode surface and stabilizes ozone production in a humid atmosphere. In this example, the resistance of the heater is set to 8Ω and 1
A commercial power supply of 00V was applied and a surface temperature of 40°C was obtained. The outside temperature at that time was 20°C.

Normally, in the case of an ozonizer that generates ozone by applying a high voltage, the amount of ozone generated changes depending on the temperature at that time. In other words, when a high voltage generator that generates a constant high voltage is used, the ozone concentration changes significantly depending on the temperature.
If an ozone concentration of lppm is required and generated under the environmental conditions of
A strong ozone concentration will be generated. This excess ozone shortens the life of the ozone decomposition catalyst and increases the possibility that ozone will leak outside the storage.

In one embodiment of the present invention, the pulse width of the pulse that drives the transistor 17 is controlled by a temperature sensor 2 in the oscillation circuit 19.
By changing the resistance by changing the resistance due to the zero temperature, the ozone generating amount is adjusted by providing voltage changing means depending on the temperature change. That is, by setting the resistance value of the temperature sensor 20 in the oscillation circuit 19 to be SOOΩ at a temperature of 30°C and 250Ω at a temperature of 10°C, the high voltage side output can be increased from 4.5KV to 3.5KV. 5 KV, and the amount of ozone generated was approximately 1 ppm at 30°C and approximately 0.25 ppm at 10°C.

Next, when the opening/closing lid 3 is opened, the intake fan 25 stops. Although the odor has been dried and has a low concentration, this is to avoid agitating the odor in the refrigerator interior 6 and causing it to scatter through the opening 2. However, since the exhaust fan 15 continues to operate, the inside of the refrigerator 6 becomes depressurized, and outside air is introduced through the opening 2, causing most of the bad odor inside the refrigerator 6 and 7 of the top flange 6, which is narrower than the opening edge of the inner box 9. It passes through the inside of the flange edge 27 and enters the intake port 24 from the duct 29. Therefore, scattering of bad odor from the opening 2 can be avoided as much as possible. In this example, the displacement was approximately 304/min.

In this embodiment, as a means of detecting temperature and converting voltage, a temperature sensor is incorporated into the generator circuit, the temperature of the space where the ozonizer is located is detected by the temperature sensor, and the change in the resistance of the temperature sensor is detected. Although it can be used directly, there are many other methods that can be considered, such as detecting the output of a temperature sensor through a separate route and varying a variable resistor using a motor or the like in response to the detected value.

Effects of the Invention As described above, the present invention includes an ozonizer and a high voltage generator that applies a high voltage to the ozonizer, and a temperature sensor detects the temperature of the space where the ozonizer is located. , a voltage changing means for controlling the voltage generated by the high voltage generator so that the voltage generated by the high voltage generator becomes high voltage under high temperature, By controlling the voltage to be high at the bottom, changes in the amount of ozone generated due to temperature changes are suppressed and stabilized or reversed. In other words, if the required amount of ozone is set under high temperature conditions, more ozone than necessary will not be generated even when the temperature is low, which will extend the life of the ozone decomposition catalyst and reduce the possibility of excess ozone leaking outside the storage. Therefore, safety can be ensured.

[Brief explanation of drawings]

FIG. 1 is a control circuit diagram of a high voltage generator of an ozone generator according to an embodiment of the present invention, FIGS. 2 and 3 are cross-sectional views of a kitchen waste storage having an ozone generator of the present invention, and FIG. Liaojishi is using a conventional ozone generator in Figure 2! 3-Osonai length-T6-・-Takanozo Mr. Bonsei 2? -Dingson generator 13...-Ozonizer-116...High voltage generator, 2o...Temperature sensor, 22...
...Ozone generator.

Claims (1)

[Claims] It consists of an ozonizer, a high voltage generator that applies high voltage to the ozonizer, a temperature sensor that detects the temperature of the space where the ozonizer is located, and a temperature sensor that controls the voltage generated by the high voltage generator at a high temperature. An ozone generator comprising voltage changing means for controlling the voltage to a high voltage.