JP2005060139A - Apparatus for producing ozone water - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for producing ozone water, in which ozone content is stable, by enhancing the dehumidification cooling efficiency at a cooling unit controlling the temperature of raw material air to be suitable beforehand and by generating a specified quantity of ozone from an ozone generator without the influences of environment, a change in temperature and humidity based on seasons and the like. <P>SOLUTION: The raw material air is dehumidified and cooled at the cooling unit 3 and introduced to the ozone generator 5 and then ozone is generated. The ozone water is prepared by mixing ozone with raw material water at an ozone charging part 9. The raw material air is cooled by a preliminary cooling means 10 set at a flow line to flow the raw material water or the ozone water and then introduced to the cooling unit 3. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an ozone water generating device that generates ozone water by mixing ozone obtained from an ozone generating device of a system that generates ozone by discharge of a discharge body into raw material water, and particularly suitable raw materials for the ozone generating device. The present invention relates to an ozone water generator that introduces air.

  Conventionally, ozone water generators have been used for various purposes, especially in the food and beverage fields of restaurants, restaurants, schools, etc. that need to suppress the generation and breeding of bacteria, in medical fields such as hospitals, or in the sterilization of pool water, etc. As water to be used, ozone water to which a bactericidal action is added is frequently used. An ozone water generator used for such applications generally uses oxygen-containing air as a raw material gas, generates oxygen by discharging the oxygen in the air from the discharge body, and this ozone is used as raw water such as tap water. Ozone water is generated by mixing the water.

  Since generally used ozone generators generate ozone by discharging a discharge body, it is known that the generation efficiency varies greatly depending on the temperature and humidity of the raw material air. That is, the ozone generation rate decreases as the temperature of the raw material air increases, and as the humidity of the raw material air increases, nitrogen oxides are generated around the discharge body, and this adheres to the discharge body, thereby discharging efficiency. Decreases and the efficiency of ozone generation decreases. In particular, when nitrogen oxide is generated around the discharge body, it cannot be removed, which causes a problem that the discharge body must be replaced. However, since the generation of nitrogen oxides cannot be recognized by the user, the ozone content of the water flowing out from the ozone water generator is significantly reduced, and even if the water is substantially ineffective, Serious problems that can be recognized and used incorrectly.

  Such problems are particularly likely to occur in kitchens such as canteens and restaurants. That is, since a large amount of water vapor is generated because a heat source such as fire is used for cooking, the inside of the kitchen chamber becomes extremely high in humidity. When such air in the kitchen is used as the raw material air, nitrogen oxides are generated in the discharge body in a short time, so that the generation of ozone is drastically reduced and does not function as ozone water.

  In order to solve the problems caused by the humidity of the raw material air described above, in general, after dehumidifying the raw material air using a moisture absorbent such as silica gel, the raw material air after dehumidification is supplied to an ozone generator to generate ozone. It is made to generate. Since such a dehumidifying means has a limit in the hygroscopic ability of a hygroscopic agent such as silica gel, it is necessary to frequently exchange the hygroscopic agent. However, since it is difficult for the user to perform this replacement work, the replacement work is often left unattended and the above-described problems often occur.

  In order to improve this problem, an ozone water generating device having a function of recovering the hygroscopic ability of a hygroscopic agent such as silica gel has been put into practical use at an appropriate time. That is, the ozone water generating apparatus of the type that dehumidifies the raw air with the hygroscopic agent introduces the raw air 100 taken in through the filter 101 into one of the pair of dehumidifiers 103 and 104 as shown in FIG. The dehumidifiers 103 and 104 are provided with dehumidifiers 103a and 104a made of silica gel, and are dehumidified by the raw air 100 flowing through the dehumidifiers 103a and 104a. The raw material air 100 thus dehumidified is supplied to the ozone gas generator 105. As described above, the ozone gas generator 105 includes the discharge body 105a therein, and generates ozone gas by applying a high-voltage power supply from the high-voltage power supply device 106 to the discharge body 105a for discharge. Then, this ozone gas is sent to the injection unit 107, and the ozone water 109 is generated by mixing the ozone gas with the raw water 108.

  The raw material air 100 is dehumidified by the silica gel provided in the dehumidifiers 103 and 104, and the silica gel that has reached the moisture absorption capacity is recovered by being heated by the heaters 103b and 104b provided in the dehumidifiers 103 and 104. A pair of dehumidifiers 103 and 104 are provided in order to stop the dehumidifying function of the raw material air 100 during the recovery of the silica gel, and this switching operation is performed by each electromagnetic wave provided in series in the conveying flow path of the raw material air 100. This is performed by switching operation of the valves 110 and 111. Note that the switching operation of the heaters 103b and 104b and the electromagnetic valves 110 and 111 in the dehumidifiers 103 and 104 is automatically performed by a controller (not shown).

  Thus, the life of the dehumidifying function is extended by automatically recovering the dehumidifying agents 103a and 104a in the dehumidifiers 103 and 104, but the raw material air 100 is supplied by the dehumidifying agents 103a and 104a heated by the heaters 103b and 104b. The problem that the ozone generation efficiency decreases is still not solved. Therefore, an ozone generator equipped with an ozone generator for generating ozone gas from a process gas dehumidified and cooled by a dehumidifier using the principle of electronic cooling capable of dehumidifying a gas to be processed (raw material air) is disclosed in Japanese Patent Application Laid-Open No. Hei. 6-127904 (patent document 1). That is, after the gas to be processed (raw material air) flowing into the cooling chamber from the intake port is dehumidified and cooled by the dehumidifier, ozone gas is generated by supplying the gas to be processed to the intake port of the ozone generator. Thus, since the humidity and temperature are lowered by cooling the gas to be treated, it is possible to increase the ozone gas generation efficiency.

  However, when the ozone generator disclosed in Patent Document 1 described above is installed in a relatively hot and humid environment such as the above-described kitchen, the gas to be treated having a predetermined humidity and temperature due to the limit of the capacity of the dehumidifier (Raw material air) cannot be obtained, and the function cannot be sufficiently exhibited. As a result, there arises a problem that remarkably impairs the reliability of the ozone generator. In order to improve the necessary functions, the capacity of the dehumidifier must be increased, which inevitably increases the cost and requires a lot of power consumption. There are still problems that cannot be answered.

JP-A-6-127904

  The problem to be solved by the present invention is to improve the dehumidifying and cooling efficiency of the cooler by adjusting the raw material air to an appropriate temperature in advance, and from the ozone gas generator without being affected by changes in temperature and humidity such as the environment and seasons. An object of the present invention is to provide an ozone water generator capable of generating ozone water having a stable ozone content by generating a predetermined amount of ozone gas.

In order to achieve the above object, the invention of claim 1 is characterized in that raw material air is dehumidified and cooled by a cooler, and this dehumidified and cooled air is introduced into an ozone gas generating device to generate ozone gas. In the ozone water generating apparatus that generates ozone water by mixing ozone gas injecting unit, the raw material air is cooled by a preliminary cooling means provided in a flow path through which the raw material water or ozone water flows, and this cooling raw material air The gist of the invention is that it is configured to be introduced into the cooler.

  In the invention of claim 2, the preliminary cooling means includes a preliminary cooling chamber, a preliminary cooler that cools with the raw water or ozone water disposed in the preliminary cooling chamber, and cooling air in the preliminary cooling chamber as a raw material. The gist is that it is configured to be taken into the cooler as air.

  Further, the invention of claim 3 is characterized in that the precooler of the precooling means is configured to cool the air in the cooling chamber by forming a heat sink in a pipe through which the raw water or ozone water flows. And

  The gist of the invention of claim 4 is that the cooler is constituted by a Peltier element, and the heat radiation portion of the Peltier element is cooled by the raw water.

  According to a fifth aspect of the present invention, the cooler is formed with a long cooling passage partitioned by a cooling fin and an inner wall of the cooling chamber, and conducts heat between the cooling fin and the cooling portion of the Peltier element. The gist is that the raw material air is circulated through the cooling passage.

  According to a sixth aspect of the present invention, in the cooler, the cooling passage is formed in a spiral shape by forming the cooling fin in a spiral shape, and the raw material air is circulated in the spiral cooling passage. The gist is that it is configured.

  The invention of claim 7 is characterized in that the cooler has a delivery port, an intake port disposed below the delivery port, and a drain port installed below the intake port, The gist is that the moisture condensed in the cooling chamber is discharged from the lower drain port.

  The gist of the invention of claim 8 is that the cooler is arranged inside the precooler, and the raw air in the precooler is taken into the cooler.

  According to the present invention, the raw material air is preliminarily adjusted to an appropriate temperature by being configured to cool the raw material air by the pre-cooling means provided in the flow path through which the raw water or ozone water flows and introduce it into the cooler. Therefore, it becomes possible to improve the dehumidification cooling efficiency of the cooler. Furthermore, by adjusting the temperature of the raw material air, it becomes possible to generate a predetermined amount of ozone gas from the ozone gas generator without being affected by changes in temperature and humidity such as the environment and seasons, and ozone having a stable ozone content. Water can be generated.

  According to the second aspect of the present invention, a preliminary cooling chamber through which raw water or ozone water flows is provided as the preliminary cooling means, and the indoor space cooled to the temperature of the raw water or ozone water by the preliminary cooling chamber is provided. By configuring the air to be drawn out as raw material air and taken into the cooler, the temperature of the raw material air can be substantially stabilized regardless of changes in the environment, season, and the like. In addition, since raw water or ozone water is used as the precooling refrigerant, it can be configured at low cost. Furthermore, by stabilizing the temperature of the raw material air, it is possible to stably generate ozone gas from the ozone gas generator, and it is possible to stabilize the ozone content of ozone water.

  Furthermore, according to the third aspect of the present invention, it is possible to improve the cooling efficiency of the indoor air as the raw material air by forming the heat sink portion in the piping in the precooling chamber through which the raw water or ozone water flows. It becomes.

  Furthermore, according to the invention described in claim 4, since the heat radiation part of the Peltier element of the cooler is cooled by the raw water, the Peltier element can be efficiently cooled by circulating the raw water. Moreover, since the raw material water used for cooling is generated in ozone water, the cooling cost of the Peltier element can be reduced to a negligible level.

  According to the invention described in claim 5, since the cooling air is circulated by forming a long cooling passage partitioned by the cooling fin and the inner wall of the cooling chamber, the cooling air itself is reduced in size. It is possible to efficiently cool the raw material air even if the temperature is changed.

  According to the invention described in claim 6, since the cooling passage of the cooler is formed in a spiral shape by the cooling fins, it is possible to reduce the size by circulating the raw material air in the spiral cooling passage. Even with this type of cooler, it becomes possible to cool efficiently.

  Further, according to the invention described in claim 7, by forming the outlet of the cooler upward and forming the drain port downward, moisture condensed in the cooling chamber can be smoothly passed from the lower drain port by its own weight. It becomes possible to discharge. At this time, by forming the cooling passage in a spiral shape, the condensed moisture falls along the slope, so that it can be efficiently discharged.

  Further, according to the invention described in claim 8, since the cooler is disposed inside the precooler and the air in the precooler is taken into the cooler as the raw air, the piping for taking in the raw air, etc. This eliminates the need to reduce the size and cost of the apparatus.

  In the ozone water generation device, the raw material air introduced into the ozone gas generation device to generate ozone gas is cooled by the preliminary cooling means provided in the flow path through which the raw water or ozone water is circulated before being introduced into the cooler. The temperature of the raw material air is almost stabilized. By introducing the raw material air at this stable temperature, the cooler dehumidifies and cools the raw material air in a stable state, regardless of changes in the environment, season, etc., and the raw material air suitable for the ozone gas generator is generated. As a result, a stable ozone gas is generated from the ozone gas generation device without being affected by environmental changes and the like, and by mixing this ozone gas with raw material water, it is possible to stably supply ozone water having a stable ozone content. .

FIG. 1 is a configuration diagram showing the overall configuration of an ozone water generator according to the present invention. The ozone water generator 1 is roughly divided into a gas generation path for generating ozone gas and a water path for generating ozone water. First, the gas generation path includes an intake port 2 for taking in raw material air containing oxygen necessary for generating ozone gas, a cooler 3 for setting the raw material air to a predetermined temperature and humidity, and the raw material air in the path. A transport pump 4 for transporting, an ozone gas generating device 5 for generating oxygen gas by discharge of the discharge body 51 from oxygen in the raw material air, a pipe 6 for circulating the raw material air between them, and a discharge of the ozone gas generating device 5 A high voltage power source 7 for applying a high voltage to the body 51 is provided. In FIG. 1, the gas generation path is indicated by a dotted arrow, and the water path is indicated by a solid arrow.

  On the other hand, the water path includes an intake port 8 for taking in raw water, an ozone gas injection unit 9 for injecting ozone gas generated by the ozone gas generating device 5 into raw water to generate ozone water, and the raw water by the ozone water. A precooler 10 for precooling, an outlet 14 through which ozone water flows out through the precooler 10, and a pipe 15 through which raw water or ozone water flows through these water paths are provided.

  In the gas generation path described above, a Peltier element 31 is used as a cooling means for dehumidifying and cooling the raw material air. As shown in FIG. 4, a cooler 3 is disposed on the cooling side of the Peltier element 31. . In the cooler 3, a spiral cooling passage 33 is formed inside the housing 32. That is, the cooling chamber 34 in the housing 32 is formed in a substantially cylindrical shape, and the cooling chamber 34 is provided with spiral cooling fins 35. The cooling fin 35 is formed so that the fin protrudes in a spiral shape around the shaft core, and the virtual outer diameter connecting the tops of the fins is formed in a substantially cylindrical shape. Then, by joining the top of the cooling fin 35 to the inner wall of the cooling chamber 34, the cooling passage 33 partitioned by the spiral cooling fin 35 is formed in the cooling chamber 34. Since the cooling passage 33 formed in this manner is formed in a spiral shape, the cooling passage 33 is formed to be approximately three times longer than the length of the cooling chamber 34.

  The cooling fins 35 and the casing 32 are formed of a metal material such as copper or aluminum having a high thermal conductivity, and the outer surface of the casing 32 is joined to the cooling side of the Peltier element 31, thereby allowing the cooling fin 35 and the casing 32 to pass through the casing 32. Thus, the cooling fin 35 is cooled.

  The cooler 3 is disposed in a preliminary cooling chamber 11 described later in a vertical posture as shown in FIG. In this posture, an outlet 36 for sending the raw material air is provided at the upper end of the casing 32, an intake port 37 for taking in the raw material air is provided in the vicinity of the lower side, and the intake port 36 is further provided. A drain port 38 is provided at the lower end of the housing 32. The casing 32 is covered with a heat insulator 39 to keep the inside of the cooling chamber 34 cooled by the Peltier element 31 cool.

  The raw air in the preliminary cooling chamber 11 is taken into the cooling chamber 34 from the intake port 37, flows through the cooling passage 33 cooled by the Peltier element 31, and is sent out from the outlet 36. The raw material air is cooled to a predetermined temperature while flowing through the long cooling passage 33. Further, the raw material air is dehumidified by being cooled in this way. At this time, moisture in the raw material air condenses on the cooling fins 35 to form water droplets, descends the slope of the spirally formed cooling fin 35, eventually reaches the drain port 38 at the lower end, and is discharged to the outside. . Thus, by forming the cooling fins 35 in a spiral shape, water droplets can always be discharged even if the inside is condensed. After dehumidifying and cooling by the cooler 3, the raw material air sent from the outlet 35 is introduced into the ozone gas generator 5.

  As for the ozone gas production | generation apparatus 5, it is known that the production | generation efficiency of ozone gas changes with the temperature and humidity of raw material air. That is, when the temperature of the raw material air is high, the oxygen concentration is reduced, so that the generation of ozone gas is small. Further, when the humidity is high, as described above, nitrogen oxides accumulate in the discharge body 51 and the generation efficiency of ozone gas is reduced. For this reason, the temperature sensor 16 is provided between the cooler 3 and the ozone gas generator 5 because the temperature and humidity of the raw material air to be introduced into the ozone gas generator 5 is required. Based on the output signal of the temperature sensor 16, the Peltier element 31 is controlled so that the raw material air has an appropriate temperature for the ozone gas generator 5.

  In addition, the Peltier element 31 is cooled on the cooling side, while heat rises on the heat dissipation side. Therefore, the heat dissipation side of the Peltier element 31 needs to be cooled. For this reason, in this invention, it is comprised so that it may cool with raw material water. That is, as shown in FIG. 4, the cooling plate 17 is surface-bonded to the heat dissipation side of the Peltier element 31. A cavity portion 17 a is formed at a position corresponding to the Peltier element 31 of the cooling plate 17, and the cavity portion 17 a is closed by the fixing plate 18. The fixing plate 18 is provided with a water inlet 19 for absorbing the raw material water and an outlet 20. The water intake port 19 is connected to a cooling water intake port 22 that branches the pipe 15 from the intake port 8 for taking in raw material water through a water amount restriction orifice 21. Further, the discharge port 20 is connected to a cooling water return port 23 branched from the vicinity of the intake port 8.

  And the raw material water taken in from the cooling water intake port 22 is returned to the cooling water return port 23 from the discharge port 20 via the inside of the hollow portion 17a from the water intake port 19, and the raw material water circulates in the hollow portion 17a. During this time, heat generated from the Peltier element 31 is absorbed and cooled to a temperature at which the Peltier element 31 operates efficiently. Thus, by using raw material water as a cooling medium for the Peltier element 31, the cooling means can be configured with a simple structure and at a low cost.

  On the other hand, the cooling capacity of the cooler 3 using the Peltier element 31 described above has a limit. In order to operate with high efficiency even if the cooler 3 is small, in the present invention, the raw air to be dehumidified and cooled by the cooler 3 is preliminarily cooled by the preliminary cooler 10. That is, the raw material air taken into the cooling chamber 33 of the cooler 3 is configured to be taken from the precooling chamber 11 of the precooler 10.

  The preliminary cooler 10 is provided on the downstream side of the ozone gas injection unit 9 and up to the outlet 14 through which the ozone water generated by the ozone gas injection unit 9 flows out. As shown in FIGS. 2 and 3, the preliminary cooler 10 forms a cooling unit 12 by winding a pipe 15 in a coil shape. In other words, the cooling unit 12 functions as a heat sink unit in which the surface area of the pipe 15 is increased by being wound in a coil shape. In order to increase the cooling efficiency, fins may be provided in the pipe 15 to further increase the surface area. In addition, a preliminary cooling chamber 11 sealed with a heat insulating material 13 is formed around the cooling unit 12, and the preliminary cooling chamber 11 is cooled by the cooling unit 12.

  Thus, the ozone water circulates through the cooling unit 12 to cool the inside of the preliminary cooling chamber 11. Then, as described above, by disposing the cooler 3 inside the preliminary cooling chamber 11, the air in the preliminary cooling chamber 11 is taken into the cooling chamber 34 of the cooler 3 as the raw material air. The temperature in the preliminary cooling chamber 11 is up to the temperature of the ozone water. In general, tap water is used as the raw material water. When tap water of about 20 degrees Celsius is generally used, the temperature of the ozone water is about 20 degrees Celsius. Therefore, the temperature in the preliminary cooling chamber 11 cooled by ozone water is about 20 degrees Celsius at the maximum, so the temperature of the raw material air taken into the cooling chamber 34 of the cooler 3 is about 20 degrees Celsius. Become.

  Normal tap water temperature does not change greatly depending on the season. For this reason, the temperature of the raw material air taken into the cooler 3 does not change greatly due to a change in the environment of the installation location such as a temperature change due to the season or a relatively hot and humid environment such as a kitchen. As a result, the load applied to the cooler 3 is substantially constant without being affected by the seasons and environmental changes, so that the cooler 3 can be stably operated with maximum efficiency.

  In addition, about the precooler 10 mentioned above, it provided in the downstream of the ozone gas injection | pouring part 9, and distribute | circulated ozone water, However, You may provide between the inlet 8 of raw material water and the ozone gas injection | pouring part 9. . In the case of such a configuration, the inside of the preliminary cooling chamber 11 is cooled by circulating the raw material water.

  Next, the operation of the ozone water generator 1 configured as described above will be described. The raw air containing oxygen necessary for generating ozone gas is taken in from the inside of the precooling chamber 11 of the precooler 10 by the transport pump 4 and taken into the cooling chamber 34 of the cooler 3. This raw material air is cooled in advance to the temperature of ozone water by the preliminary cooler 10. Normally, the oxygen concentration in the air is 21%, but this oxygen concentration decreases as the temperature rises. Therefore, in order to ensure the oxygen concentration in a high-temperature and high-humidity environment, it is important to set the raw air to a predetermined temperature by the precooler 10.

  The pre-cooled raw material air is taken into the cooling chamber 34 of the cooler 3 and cooled and dehumidified by flowing through a long cooling passage 33 cooled by a Peltier element 31 provided in the cooler 3. The The raw material air dehumidified and cooled by the cooler 3 has a temperature of 1 to 10 degrees Celsius and a humidity of 40% or less, and is set to an optimum temperature and humidity for generating ozone gas by the ozone gas generator 5 at the subsequent stage. The At this time, since the temperature of the raw material air taken into the cooler 3 is lowered in advance, the dehumidifying cooling efficiency of the cooler 3 can be improved.

  The raw material air thus dehumidified and cooled is introduced into the ozone gas generation device 5 by the transport pump 4, and ozone gas is generated from the raw material air. A check valve 24 is interposed between the transport pump 4 and the ozone gas generator 5 to prevent the backflow of the raw material air. Although the ozone gas generation device 5 is well known and will not be described in detail, the high voltage power source 6 discharges the discharge body 51 by applying a high voltage to generate ozone gas from oxygen in the raw material air. Since the raw material air introduced into the ozone gas generator 5 contains about 79% nitrogen, the discharge body 51 discharges to generate nitrogen oxides and adhere to the electrodes of the discharge body 51. This phenomenon is more likely to be generated as the humidity is higher. However, since the raw material air described above decreases the humidity, the generation of nitrogen oxides is greatly suppressed.

  The ozone gas generated by the ozone gas generator 5 is sent to the ozone gas injection unit 9 through the check valve 25. The configuration of the ozone gas injection unit 9 is well known, and detailed description thereof is omitted, but in a normal state, pure water is said to be about 60%. Accordingly, ozone gas is injected into the remaining portion, and about 2% of ozone water is generated. Thus, the ozone water generated by the ozone gas injection unit 9 flows out from the outlet 14 via the preliminary cooler 10 described above.

  In the gas generation path, the motor 26 that drives the transport pump 4 that circulates the source air and ozone gas, the temperature sensor 16 that detects the temperature of the source air introduced into the ozone gas generation device 5, and the detection signal of the temperature sensor 16 are used. The high voltage power source 7 that supplies a high voltage to the Peltier element 31 controlled and the discharge body 51 of the ozone gas generator 5 is controlled by the controller 27. In addition, a display device 28 is connected to the controller 27 so as to display various operating conditions.

  The present invention provides, for example, ozone water used for sterilization and cleaning of various foods, medical instruments in medical relations such as hospitals, and sterilization of pool water in kitchens of restaurants, restaurants, and schools. It can be applied to a supplying device.

It is a lineblock diagram showing the whole ozone water generating device composition concerning the present invention. It is a top view which shows the ozone water production | generation apparatus concerning this invention. It is a front view which shows the ozone water production | generation apparatus concerning this invention. It is sectional drawing which shows the cooler concerning this invention. It is a block diagram which shows the conventional ozone water production | generation apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ozone water production | generation apparatus 2 Intake port 3 Cooling machine 5 Ozone gas production | generation apparatus 51 Electric discharge body 6 Piping (for gas production paths)
DESCRIPTION OF SYMBOLS 8 Intake port 9 Ozone gas injection part 10 Precooler 11 Precooling chamber 12 Cooling part 14 Outlet 17 Cooling plate 17a Cavity part 19 Water inlet 20 Drain outlet 22 Cooling water inlet 23 Cooling water return port 31 Peltier device 33 For cooling Passage 34 Cooling chamber 35 Cooling fin 36 Outlet 37 Inlet port 38 Drain port

Claims (8)

The raw material air is dehumidified and cooled by a cooler, and this dehumidified and cooled air is introduced into an ozone gas generation device to generate ozone gas, and this ozone gas and raw material water are mixed by an ozone gas injection unit to generate ozone water. In the ozone water generator,
The raw material air is cooled by a preliminary cooling means provided in a flow path through which the raw water or ozone water is circulated, and this cooling raw material air is introduced into the cooler.   The preliminary cooling means includes a preliminary cooling chamber, a preliminary cooler that is cooled by the raw water or ozone water disposed in the preliminary cooling chamber, and takes in the cooling air in the preliminary cooling chamber as raw air into the cooler. Item 2. The ozone water generator according to Item 1.   The ozone water generating apparatus according to claim 2, wherein the precooler of the precooling means forms a heat sink in a pipe through which the raw water or ozone water is circulated to cool the air in the cooling chamber.   The ozone water generating device according to claim 1, wherein the cooler is configured by a Peltier element, and a heat radiation portion of the Peltier element is cooled by the raw water.   The cooling machine has a long cooling passage partitioned by a cooling fin and an inner wall of a cooling chamber, and conducts heat between the cooling fin and the cooling portion of the Peltier element, and the raw material is placed in the cooling passage. The ozone water generation apparatus according to claim 1 and 4, wherein air is circulated.   6. The ozone water generation according to claim 5, wherein the cooling passage is formed in a spiral shape by forming the cooling fin in a spiral shape, and the raw material air is circulated in the spiral cooling passage. apparatus.   The cooler has a delivery port, an intake port disposed below the delivery port, and a drain port installed below the intake port, and condensates moisture in the cooling chamber. The ozone water generating device according to claim 5 and 6 discharged from a lower drain port.   The ozone water generator according to any one of claims 1 to 6, wherein the cooler is disposed inside the precooler, and raw material air in the precooler is taken into the cooler.

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