WO2006030518A1

WO2006030518A1 - Ozone water production system

Info

Publication number: WO2006030518A1
Application number: PCT/JP2004/013657
Authority: WO
Inventors: Norikazu Takada; Kazuhiro Saito
Original assignee: Grow Co., Ltd.
Priority date: 2004-09-17
Filing date: 2004-09-17
Publication date: 2006-03-23

Abstract

An ozone water production system (100) for producing ozone water by dissolving ozone gas generated from an ozone gas generating section (104) into material water wherein a pressure switch (101) for sensing the feeding pressure of an oxygen-containing gas is provided between the ozone gas generating section (104) and an oxygen-containing gas supplying section (200) for supplying the oxygen-containing gas to the ozone gas generating section (104). When the volume of gas in the oxygen-containing gas supplying section (200) is deficient, the pressure switch (101) senses that the feeding pressure of the oxygen containing gas is below a specified level and sends a signal to an output control section (112) so that ozone water cannot be discharged from an ozone water output section (109). Consequently, water in which no ozone gas is dissolved can be prevented from being discharged.

Description

Specification

Ozone water production equipment

Technical field

TECHNICAL FIELD [0001] The present invention relates to an ozone water production apparatus that generates ozone water by bringing ozone gas into contact with water, and more specifically, oxygen-containing gas that is a raw material of ozone gas is not normally supplied to the apparatus and ozone water is not supplied. The present invention relates to an ozone water production apparatus equipped with a control mechanism that prevents water from being discharged in the state of raw water when it cannot be produced satisfactorily.

Background art

[0002] Ozone (chemical formula O) has a strong acid scent and is extremely effective for sterilization and deodorization.

Three

In addition to ozone gas, ozone water produced by dissolving ozone gas in water is known as a form of use. Ozone water is used as washing water for hand-washing in the medical and food fields, and is used for sterilization and washing of medical equipment, food manufacturing equipment, tableware, and the like. In addition, ozone is not only persistent, but also has the effect of decomposing and detoxifying harmful organic substances like other disinfectants and oxidants such as chlorine, sodium hypochlorite, and hydrogen peroxide. As environmental problems become more serious, the range of use is expected to expand further in the future.

[0003] Ozone water is generated by bringing ozone gas generated by an ozone generator into contact with water and dissolving it. There are mainly silent discharge method, electrolysis method, and ultraviolet lamp method for producing ozone gas. Of these, the ozone gas generator using the silent discharge method is excellent in productivity and economy. Many vessels use the silent discharge method. The silent discharge method is a method in which ozone gas is generated by causing discharge while flowing an oxygen-containing gas between a pair of electrodes arranged in a parallel plate shape or a coaxial cylindrical shape. As an ozone gas generator by the silent discharge method, for example, the outer surface of a double tube structure discharge tube is covered with a solid dielectric tube, and an electrolyte solution or water is sealed between the discharge tube and the solid dielectric tube. On the other hand, there is a configuration in which the inside of the discharge tube is cooled with an electrolyte solution, water, or air (see Patent Document 1).

[0004] The ozone gas generated by the ozone generator as described above is dissolved in contact with water. It is possible to produce ozone water. Fig. 4 is a schematic diagram showing an example of a conventional ozone water production apparatus. The conventional ozone water production apparatus shown in FIG. 4 has an ozone gas generator that generates ozone gas from oxygen-containing gas by a silent discharge method, and an ozone water generator that dissolves the generated ozone gas in water. And a gas-liquid dissolving part that generates water. Oxygen, which is a raw material for ozone gas, is introduced into an ozone gas generation unit such as a cylinder as an oxygen-containing gas supply unit, and becomes ozone gas when a voltage is applied. And the ozone gas produced | generated in the ozone gas generation part is introduce | transduced into a gas-liquid melt | dissolution part, and ozone water is produced | generated by being melt | dissolved in the raw | natural water supplied with water supply power. The generated ozone water is discharged by operating the ozone water output switch.

[0005] However, when the remaining amount of oxygen-containing gas in the cylinder decreases, the delivery pressure of the oxygen-containing gas decreases, so that the oxygen-containing gas cannot be sufficiently fed to the ozone gas generator, and ozone gas is not generated. Become. For this reason, ozone water could not be generated in the gas-liquid dissolving part, and a situation where water was discharged in the state of raw water could occur. Naturally, sterilization and deodorizing effects cannot be obtained with raw water in which ozone gas is not dissolved. If used without being aware of this, sterilization and cleaning of medical equipment, food production equipment, etc. will not be performed satisfactorily. Since this could lead to an accident, the user had to always manage the amount of oxygen-containing gas stored in the cylinder to prevent such a situation. However, for example, in medical facilities, food factories, etc., because it is frequently used by multiple people, there is a case where sufficient control over the amount of oxygen-containing gas storage is not possible, so that There has been a demand for an ozone water production apparatus with improved problems.

Patent Document 1: Japanese Patent Laid-Open No. 2003-206108

Disclosure of the invention

Problems to be solved by the invention

[0006] In the ozone water production apparatus, the present invention detects when the amount of gas in the oxygen-containing gas supply unit is deficient and the oxygen-containing gas cannot be satisfactorily supplied to the ozone gas generation unit, and detects this to detect raw water. It is an object of the present invention to provide an ozone water production apparatus that prevents water from being discharged in a state and can reliably supply ozone water. Means for solving the problem

[0007] In order to solve the above-mentioned problem, first, the means of the invention described in claim 1 includes an ozone gas generation unit 104 that generates ozone gas from an oxygen-containing gas, and an oxygen-containing gas supplied to the ozone gas generation unit 104 The oxygen-containing gas supply unit 200, the gas-liquid mixing unit 106 for bringing ozone gas into contact with water, the gas-liquid dissolving unit 107 for generating ozone water by dissolving ozone gas in water, and the gas-liquid dissolving unit 107 A ozone water production apparatus 100 having a gas-liquid separation unit 108 for separating excess ozone gas that has not been dissolved and an ozone water output unit 109 for outputting the generated ozone water to the outside. A pressure switch 101 is provided between the section 104 and the oxygen-containing gas supply section 200. The pressure switch 101 operates when the oxygen-containing gas delivery pressure falls below a predetermined pressure, and a signal from the pressure switch 101 is transmitted. Received ozone water output The ozone water production apparatus 100 is characterized by having an output control unit 112 that controls the output of ozone water from 109.

[0008] By providing the pressure switch 101 that detects the delivery pressure of the oxygen-containing gas between the oxygen-containing gas supply unit 200 and the ozone gas generation unit 104, the amount of gas in the oxygen-containing gas supply unit 200 is insufficient. When the delivery pressure of the oxygen-containing gas drops below the specified pressure, the pressure switch 101 can detect this and send a signal to the output control unit 112 to prevent the ozone water output unit 109 from discharging water. . As a result, it is possible to prevent the raw water in which the ozone gas is not dissolved from being output as it is.

[0009] Further, the means adopted by the invention of claim 2 is that an air supply valve that controls the supply of the oxygen-containing gas to the ozone gas generation unit 104 is provided between the ozone gas generation unit 104 and the pressure switch 101. The output control unit 112 receives the signal from the pressure switch 101 and stops the water output from the ozone water output unit 109 only when the air supply valve 103 is closed. The ozone water production apparatus 100 according to Item 1.

The supply of the oxygen-containing gas from the oxygen-containing gas supply unit 200 to the ozone gas generation unit 104 is controlled by opening and closing the supply valve 103. When the supply valve 103 is opened, oxygen-containing gas is sent from the oxygen-containing gas supply unit 200 to the ozone gas generation unit 104. However, when the supply valve 130 is opened, depending on the piping and structure of the device, etc. When closed, the delivery pressure of oxygen-containing gas may drop rapidly. Pressure When the switch 101 is activated, the water output from the ozone water output unit 109 is restricted even though the oxygen-containing gas remains in the oxygen-containing gas supply unit 200. In the ozone water producing apparatus 100 according to claim 2, the ozone water is not output due to malfunction by enabling the signal from the pressure switch 101 only when the supply valve 103 is closed. Is to prevent.

[0011] Further, the means adopted by the invention of claim 3 is that the ozone gas generator 104 causes the oxygen-containing gas to flow between a pair of positive and negative electrodes arranged in a flat plate shape or a coaxial cylindrical shape, 2. The ozone water producing apparatus 100 according to claim 1, wherein a voltage is applied to both electrodes to convert oxygen into ozone gas.

The ozone water production apparatus 100 uses an ozone gas generation unit 104 that generates ozone gas with oxygen force by a so-called silent discharge method. Ozone gas can be generated economically and at a high concentration by using an ozone gas generation part by the silent discharge method.

[0013] Further, the means adopted by the invention of claim 4 is an error display means 113 for indicating that the delivery pressure of the oxygen-containing gas is equal to or lower than a predetermined pressure when the pressure switch 101 is operated. The ozone water production apparatus 100 according to any one of claims 1 to 3, wherein the ozone water production apparatus 100 is provided.

[0014] By providing the error display means, when the pressure switch is operated due to the lack of the oxygen-containing gas and the water discharge is restricted, the user can visually confirm the state. The invention's effect

[0015] According to the ozone water production apparatus of claim 1, the pressure for detecting the delivery pressure of the oxygen-containing gas delivered from the oxygen-containing gas supply unit between the ozone gas generation unit and the oxygen-containing gas supply unit By providing a switch and providing an output control unit that receives a signal from the pressure switch and cannot discharge water from the ozone water output unit when the delivery pressure falls below a predetermined pressure value, the oxygen-containing gas supply unit When the oxygen-containing gas is deficient, it is possible to prevent the ozone gas from being output to the outside in the raw water in which the ozone gas is not dissolved, so that the ozone water in which the ozone gas is dissolved can be reliably supplied.

[0016] According to the ozone water production apparatus according to claim 2, in addition to the effect of the ozone water production apparatus according to claim 1, the ozone water production apparatus is connected between the ozone gas generation part and the pressure switch. By providing a supply valve that controls the supply of oxygen-containing gas, and the pressure switch is activated only when the supply valve is closed. Since the pressure switch does not detect a decrease in the gas delivery pressure, the output control of ozone water can be reliably performed only when the oxygen-containing gas is deficient.

[0017] According to the ozone water production apparatus according to claim 3, in addition to the effect of the ozone water production apparatus according to claim 1, the ozone gas generation unit is arranged in a flat plate shape or a coaxial cylindrical shape. By introducing an oxygen-containing gas between a pair of electrodes and applying a voltage to both electrodes to generate ozone from oxygen, a so-called silent discharge method is used, so that economical and high-concentration ozone gas can be produced. It is possible to generate ozone water efficiently.

[0018] According to the ozone water producing apparatus according to claim 4, in addition to the effect of the ozone water producing apparatus according to any one of claims 1 to 3, the delivery pressure of the oxygen-containing gas is not more than a predetermined pressure. By providing an error display means for indicating that the oxygen-containing gas is present, the user can visually confirm that the oxygen-containing gas is in a deficient state, so that the oxygen-containing gas supply unit can be easily managed.

BEST MODE FOR CARRYING OUT THE INVENTION

[0019] The present invention relates to an ozone water production apparatus for generating ozone water by contacting ozone gas with water to dissolve the water, and when the supply of oxygen-containing gas as a raw material for ozone gas is not sufficiently performed, The main feature is to control so that it cannot.

[0020] The ozone water production apparatus according to the present invention generally includes an ozone gas generation unit, an oxygen-containing gas supply unit, a gas-liquid mixing unit, a gas-liquid dissolution unit, an ozone water output unit, and an output control unit. It is done.

[0021] The ozone gas generator is an ozone gas generator that generates ozone gas from an oxygen-containing gas. An existing ozone gas generator can be used as the ozone gas generator applied to the ozone water production apparatus according to the present invention. For example, by flowing an oxygen-containing gas between a pair of electrodes, a discharge is generated to generate ozone gas! / By a so-called silent discharge method, or by a so-called ultraviolet lamp method in which ultraviolet rays are applied to air to generate ozone. Can be used. Of these, the silent release from the viewpoint of production efficiency and cost of ozone gas. It is preferable to use an electric ozone gas generator.

[0022] The oxygen-containing gas supply unit supplies an oxygen-containing gas serving as a raw material for ozone gas generation to the ozone gas generation unit. The higher the oxygen content in the oxygen-containing gas, the better the generation rate of the ozone. Therefore, the oxygen-containing gas supply unit is a medical oxygen cylinder that can supply high-concentration oxygen, an industrial oxygen cylinder, It is particularly preferable to use a medical oxygen cylinder even though it is preferable to use a PSA oxygen generator.

[0023] The gas-liquid mixing section is for bringing the raw water supplied from the water supply into contact with the ozone gas generated in the ozone gas generation section. For example, a water aspirator can be used. That is, a water aspirator is connected to the water supply and the ozone gas generator, and as the raw water passes through the aspirator, a negative pressure is generated in the aspirator, and the ozone gas generated in the ozone gas generator by this negative pressure is It is guided inside and can be infested with raw water there.

The gas-liquid mixing part can also be formed integrally with the gas-liquid dissolving part described below. In this case, for example, the so-called bubble dissolution method in which ozone gas is bubbled into contact with water and dissolved, or water is passed through the porous membrane and ozone gas is allowed to flow outside it to absorb ozone into the water. An ozone gas dissolving apparatus employing a so-called diaphragm dissolving method for producing ozone water can be applied.

[0024] The gas-liquid dissolving part dissolves the ozone gas mixed in the raw water in the gas-liquid mixing part in the raw water to generate ozone water. The gas-liquid dissolving part may be formed as a straight pipe so as to dissolve ozone gas in the raw water using the force of water flow, or may be formed by arranging a static fluid mixer. Also, the gas-liquid dissolving part should be formed integrally with the gas-liquid mixing part as described above.

[0025] The gas-liquid separation unit stores ozone water generated in the gas-liquid dissolution unit and separates excess ozone gas that has not been dissolved in water. Excess ozone gas separated in the gas-liquid separation unit is decomposed into oxygen via the ozone gas processing unit and discharged to the outside. While ozone gas is extremely useful for sterilization, deodorization, etc., high-concentration ozone gas is dangerous for the human body. Methods for treating ozone gas include activated carbon decomposition method, catalyst method, thermal decomposition method, etc. It is possible to use an existing ozone gas processing apparatus.

[0026] The ozone water output section is connected to the gas-liquid separation section and discharges the generated ozone water to the outside. The output of the ozone water output is controlled by the output controller.

[0027] The output control unit is connected to the ozone water output unit, and controls the discharge and stoppage of ozone water from the ozone water output unit. The output control unit is configured to start or stop the output of the ozone water when the ozone water output switch force, which is composed of manual switches such as photoelectric sensors, buttons, etc., is also input. Control the water output.

[0028] Further, as a main feature of the present invention, a pressure switch for detecting a delivery pressure of the oxygen-containing gas is provided between the oxygen-containing gas supply unit and the ozone gas generation unit. The pressure switch is activated when the oxygen-containing gas delivery pressure drops below a predetermined pressure due to a lack of gas in the oxygen-containing gas supply unit, and sends a signal to the output control unit. When the output control unit receives the pressure switch force signal, the output control unit controls the ozone water output unit so that water cannot be discharged from the ozone water output unit. As the pressure switch, an existing one set to a predetermined operating pressure value can be used.

[0029] An air supply valve is disposed between the pressure switch and the ozone gas generator. This supply valve is a so-called electromagnetic valve force, and opening and closing of the supply valve controls the supply of the oxygen-containing gas to the ozone gas generator. That is, when the ozone gas production apparatus is operating normally, the air supply valve is opened, and when the apparatus is stopped, it is closed. However, depending on the structure of the apparatus, such as the piping method, the oxygen-containing gas is sent to the ozone gas generation section when the apparatus is activated and the air supply valve is opened, so that the oxygen-containing gas supply section where the pressure switch is located The pressure with the air supply valve may drop extremely. By this time, if the pressure switch is activated by detecting a drop in the delivery pressure, there is a possibility that water cannot be discharged from the ozone water output section even though the oxygen-containing gas remains sufficiently. In order to avoid such a situation, the output control unit may be set so that the signal from the pressure switch is valid only when the air supply valve is closed. Then, it becomes possible to prevent the malfunction of the pressure switch as described above. [0030] Further, when the pressure switch is activated and the water discharge is restricted due to the lack of the oxygen-containing gas, an error display means can be provided so that the user can visually confirm the state. As the error display means, for example, it is conceivable to provide a display for displaying a pressure value or an error message by numbers or letters, or to provide a warning lamp.

Example

[0031] Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a schematic diagram of an ozone water production apparatus 100 according to the present embodiment, and FIG. 2 shows a block diagram of the ozone water production apparatus 100.

The ozone water production apparatus 100 according to the present embodiment includes an ozone gas generation unit 104 that generates an ozone gas by performing silent discharge on an oxygen-containing gas supplied from a medical oxygen cylinder 200 as an oxygen-containing gas supply unit; An aspirator 106 as a gas-liquid mixing unit that mixes raw water into which water supply power is also introduced and ozone gas generated in the ozone gas generation unit 104; a gas-liquid dissolution unit 107 such as a straight pipe that dissolves ozone gas in raw water; A gas-liquid separator 108 that separates surplus ozone gas that has not been dissolved in raw water and ozone water, an ozone water output unit 109 that outputs ozone water to the outside, an ozone gas treatment unit 110, an output control unit 112, A warning lamp 113 is provided.

A pressure reducing valve 210, a flow regulator 220, a pressure switch 101, and an air supply valve 103 are also arranged between the ozone gas generation unit 104 and the medical oxygen cylinder 200 in order of the side force of the medical oxygen cylinder. Has been. Between the water supply and the aspirator 106, a pressure reducing valve 310, a filtration filter 300, a pressure switch 102, and a water supply valve 111 are arranged in this order from the water supply side.

In the ozone water production apparatus according to the present embodiment, when there is an input of a photoelectric sensor as an ozone water output switch, the output control unit 112 detects this and activates the ozone water output unit 109 to activate the ozone water. Start output. At the same time, the air supply valve 103 is opened, and an oxygen-containing gas is introduced into the ozone gas generation unit 104, where the voltage supplied from the high-voltage power supply circuit 105 is applied and ozone gas is generated. On the other hand, the raw water is introduced from the water supply toward the aspirator 106 through the pressure reducing valve 310, the filtration filter 300, and the water supply valve 111. The ozone gas generated by the ozone gas generation unit 104 passes through the aspirator 106 as raw water. The negative pressure generated at the time is guided into the aspirator 106 and mixed with the raw water, and is dissolved in the gas-liquid dissolution unit 107 to generate ozone water.

At this time, the oxygen-containing gas delivered from the medical oxygen cylinder 200 is depressurized by the pressure reducing valve 210 and adjusted to an appropriate flow rate by the flow rate regulator 220 to generate ozone gas. Part 104 is introduced. Further, the pressure switch 101 detects the delivery pressure of the oxygen-containing gas whose flow rate has been adjusted, and operates when the delivery pressure falls below a predetermined pressure, whereby a signal is transmitted to the output control unit 112. The ozone water output unit 109 cannot discharge water, and the warning lamp 113 is lit to notify the user of the abnormality.

Further, the ozone water producing apparatus 100 according to the present embodiment is provided with a pressure switch 102 for detecting the feed water pressure between the filter 300 and the feed valve 111. As a result, when the supply of raw water is not performed normally due to water interruption or the like, the pressure switch 102 detects a decrease in the supply water pressure and transmits a signal to the output control unit 112, and the ozone water output unit Can't get out of 109! /

[0034] Then, the ozone water generated by dissolving the ozone gas in the raw water in the gas-liquid dissolution unit 107 flows into the gas-liquid separation unit 108, where the surplus is not dissolved with the ozone water. Separated into ozone gas. The ozone water is output to the outside from the ozone water output unit 109 when the photoelectric sensor is input. Further, the separated excess ozone gas is decomposed into oxygen by the ozone gas processing unit 110 and exhausted outside the apparatus.

FIG. 3 shows an output control method of ozone water in the ozone water producing apparatus 100 according to this embodiment. In order to output ozone water in the ozone water production apparatus 100 according to the present embodiment, (1) there is an input of a photoelectric sensor that is an ozone water output switch (2) the delivery pressure of the oxygen-containing gas is Three start-up conditions must be satisfied: normal (3) normal supply water pressure. That is, if both the delivery pressure of the oxygen-containing gas and the supply pressure of the raw water are normal, the high-voltage power supply circuit 105 is turned on with the input of the photoelectric sensor, and the supply valve 103 and the supply valve 111 are opened and the ozone is supplied. Water production and output is initiated. On the other hand, if there is a pressure drop in either the oxygen-containing gas delivery pressure or the raw water supply pressure, the high-voltage power circuit 105 is turned on even if the photoelectric sensor is input. In addition, the supply valve 103 and the supply valve 111 remain closed to generate ozone water. There will be no power.

[0036] When the output of ozone water is arbitrarily stopped, the photoelectric sensor is re-input during the output. When the photoelectric sensor is re-input, the energization to the high-voltage power supply circuit 105 is cut off, the supply valve 103 and the supply valve 111 are closed, and the generation and output of ozone water are stopped. In addition, in the ozone water production apparatus 100 according to the present embodiment, the photoelectric sensor can be re-input for 5 minutes in order to prepare for a case where a user who can stop the operation arbitrarily by operating the photoelectric sensor neglects the stop operation. Otherwise, the output of ozone water will automatically stop. This makes it possible to prevent wasteful output of ozone water.

[0037] According to the ozone water producing apparatus 100 according to the present embodiment, the oxygen-containing gas delivery pressure is not lower than a predetermined pressure as the apparatus start-up condition, that is, in the oxygen-containing gas supply unit 200 If the amount of oxygen-containing gas required to produce a sufficient amount of ozone gas cannot be delivered by the ozone gas generator 104, the output of ozone water will be limited. Can be prevented from being output as undissolved raw water.

Industrial applicability

[0038] When the oxygen-containing gas used as the raw material for ozone gas generation is deficient, it is possible to reliably supply ozone water in which ozone gas with an effective concentration is dissolved by restricting the output of the ozone water output. Therefore, for example, it can be applied to sterilization and washing of devices and instruments in fields such as medical treatment and food processing.

Brief Description of Drawings

FIG. 1 is a schematic view of an ozone water production apparatus according to the present example.

FIG. 2 is a block diagram of an ozone water production apparatus according to the present embodiment.

FIG. 3 is an explanatory view showing an ozone water output control method of the ozone water production apparatus according to the present embodiment.

FIG. 4 is a schematic view showing a conventional ozone water production apparatus.

Explanation of symbols

[0040] 100 ozone water production equipment

101 Pressure switch 103 Supply valve

104 Ozone gas generator

106 Aspirator (gas-liquid mixing part)

107 Gas-liquid dissolution part

108 Gas-liquid separator

109 Ozone water output section

112 Output controller

200 Medical oxygen cylinder (Oxygen-containing gas supply unit)

Claims

The scope of the claims

[1] an ozone gas generator that generates ozone gas from an oxygen-containing gas;

An oxygen-containing gas supply unit for supplying an oxygen-containing gas to the ozone gas generation unit, a gas-liquid mixing unit for contacting ozone gas and water,

A gas-liquid dissolving part that generates ozone water by dissolving ozone gas in water;

An ozone water production apparatus having a gas-liquid separation unit that separates excess ozone gas that has not been dissolved in the gas-liquid dissolution unit, and an ozone water output unit that outputs generated ozone water to the outside,

Between the ozone gas generation unit and the oxygen-containing gas supply unit, a pressure switch that is activated when a delivery pressure of the oxygen-containing gas becomes a predetermined pressure or less is disposed, and from the pressure switch An ozone water production apparatus characterized by having an output control unit that receives the signal and controls the output of the ozone water so that the ozone water cannot be output.

[2] A supply valve for controlling the supply of the oxygen-containing gas to the ozone gas generation unit is provided between the ozone gas generation unit and the pressure switch, and the pressure switch is provided only when the supply valve is closed. 2. The ozone water producing apparatus according to claim 1, wherein the device operates.

[3] The ozone gas generator is characterized in that oxygen-containing gas flows between a pair of positive and negative electrodes arranged in a flat plate shape or coaxial cylindrical shape, and a voltage is applied to both electrodes to convert oxygen into ozone gas. The ozone water production apparatus according to claim 1.

[4] The apparatus according to any one of claims 1 to 3, further comprising an error display means for indicating that the delivery pressure of the oxygen-containing gas is equal to or lower than a predetermined pressure when the pressure switch is operated. The ozone water production apparatus described in 1.