JP2009195813A - Ozone water manufacturing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ozone water manufacturing device which can dissolve ozone to a high concentration and obtain ozone water from which the ozone does not escape for a long time. <P>SOLUTION: The ozone water manufacturing device comprises a pressurizing part 1 for pressure feeding water, an ozone injection part 2 for injecting the ozone into water, a pressurized dissolution part 3 which can dissolve the ozone into water by a pressurizing action to feed the water containing the injected ozone under pressure with the help of the pressurizing part 1, and a pressure reduction part 4 which can successively reduce the pressure of the ozone water containing the ozone dissolved by the pressurized dissolution part 3 to an atmospheric pressure level from the inflow side toward the outflow side of the ozone water. The continuous supply of the ozone water to the pressure reduction part 4 can be achieved by continuously operating each part, i.e. the pressurizing part 1, the ozone injection part 2 and the pressurized dissolution part 3. Thus, the generated air bubble-free ozone water is continuously discharged from the outflow side of the pressure reduction part 4. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an ozone water production apparatus.

Ozone water is widely used for sterilization and bleaching in various fields. As an apparatus for producing such ozone water, there is one proposed in Patent Document 1, for example. In this Patent Document 1, ozone gas is blown from a pipe into the water, and ultrasonic vibration is applied to the ozone mixed water, so that ozone bubbles are made fine to dissolve ozone in water.
JP 2004-17042 A

  However, in the above-mentioned Patent Document 1, only ozone bubbles refined by ultrasonic vibration are dissolved in water, so ozone cannot be dissolved at a high concentration. Is only present in the water as fine bubbles, and therefore ozone escapes from the water in a short time, and ozone water in which ozone is dissolved at a high concentration over a long time cannot be obtained.

  The present invention has been made in view of the above points, and provides an ozone water production apparatus capable of dissolving ozone at a high concentration and obtaining ozone water in which ozone does not escape for a long time. It is intended.

  The ozone water production apparatus according to the present invention includes a pressurizing unit 1 that pumps water, an ozone injecting unit 2 that injects ozone into water, and a pressure that is applied when water into which ozone has been injected is pumped by the pressurizing unit 1. Pressure dissolving part 3 that dissolves ozone in water with pressure, and pressure reducing ozone water that has dissolved ozone in the pressure dissolving part 3 from the inflow side to the outflow side to the atmospheric pressure sequentially The pressure part 1, the ozone injection part 2, and the pressure dissolution part 3 are continuously operated, and ozone water is continuously supplied to the pressure reducing part 4, and the outflow side of the pressure reducing part 4 is provided. From the above, ozone water without generation of bubbles is continuously discharged.

  According to the present invention, ozone is dissolved in water by pressurization by the pressurizing unit 1, so that ozone can be dissolved in water with high efficiency and at a high concentration, and ozone in which ozone is dissolved at a high concentration. Since the pressure of the water is gradually reduced from the inflow side to the outflow side by the decompression unit 4 to the atmospheric pressure, ozone water in which ozone is dissolved at a high concentration is prevented by preventing bubbles from being generated in the ozone water. The ozone concentration can be taken out as it is, and the ozone concentration can be maintained for a long time without ozone being lost.

  The invention of claim 2 is characterized in that it comprises a surplus ozone discharge section 5 that discharges surplus ozone that does not dissolve in water in the pressure dissolution section 3.

  According to this invention, excess ozone that does not dissolve in water is discharged from the pressure dissolution unit 3, thereby stabilizing the ratio of ozone and water in the pressure dissolution unit 3 due to residual ozone remaining, and pressure fluctuation. It is possible to prevent the ozone from being dissolved and to maintain high ozone dissolution efficiency.

  The invention of claim 3 is characterized by comprising a connecting part 10 for supplying surplus ozone from the surplus ozone discharge part 5 to the ozone injection part 2.

  According to the present invention, surplus ozone that does not dissolve in water at the pressure dissolving unit 3 can be reinjected into the water at the ozone injecting unit 2, and waste of surplus ozone is eliminated, and harmful ozone leaks to the outside. Can be prevented from being contaminated.

  According to a fourth aspect of the present invention, the pressure reducing part 4 is provided in a flow path 6 for sending ozone water from the pressure dissolving part 3, and a plurality of pressure adjustments for stepwise reducing the pressure of the ozone water to atmospheric pressure. It is characterized by comprising the valve 7.

  According to the present invention, the pressure of the ozone water can be reduced by adjusting the pressure by the pressure adjusting valve 7. By adjusting the pressure by the pressure adjusting valve 7 according to the pressure in the pressurizing and dissolving unit 3, bubbles are generated in the ozone water. Occurrence can be stably prevented.

  In the invention of claim 5, the decompression section 4 is formed by pressurizing and dissolving the pressure of the ozone water to atmospheric pressure by adjusting at least one of the channel cross-sectional area and the channel length. It is characterized by comprising a flow path 6 for sending out ozone water from the section 3.

  According to this invention, the pressure of the ozone water can be lowered by the flow path cross-sectional area and flow path length of the flow path 6 for sending out the ozone water from the pressure dissolving section 3, and the structure of the apparatus is simplified. It is something that can be done.

  The invention of claim 6 is characterized in that the decompression section 4 is formed by one flow path.

  According to the present invention, the apparatus configuration does not become complicated as in the case where the pressure reducing unit 4 is formed by providing a plurality of flow paths.

  In the invention of claim 7, the sum of the pressure loss of the flow path 6 for sending ozone water from the pressure dissolving section 3 and the pressure loss of the extension flow path 8 added to the flow path 6 is pumped by the pressure section 1. An extension channel 8 is added to the channel 6 so that the pressure required to pressurize the water and ozone in the pressurizing and dissolving part 3 by the pressure of the water and ozone. is there.

  According to the present invention, by adding the extension flow path 8 to the flow path 6, it is possible to secure the pressure in the pressurizing and dissolving section 3 with the pushing pressure from the pressurizing section 1 without using a throttle valve. The ozone can be dissolved in water at this pressure.

  In addition, the present invention generates ozone and supplies ozone from the ozone injection part 2, and measures ozone dissolution concentration of ozone water and controls generation of ozone by the ozone generator 13 based on the measurement result. It is characterized by comprising a density detection control unit 9 that performs this.

  According to this invention, the ozone water is adjusted while adjusting to the required ozone concentration by performing feedback control of the ozone generation by the ozone generator 13 based on the ozone dissolution concentration measured by the ozone concentration detection control unit 9. Can be generated.

  According to the present invention, ozone is dissolved in water by pressurization by the pressurizing unit 1, so that ozone can be dissolved in water with high efficiency and high concentration, and ozone can be dissolved at high concentration. Since the pressure of the dissolved ozone water is gradually reduced from the inflow side to the outflow side by the decompression unit 4 to the atmospheric pressure, bubbles are prevented from being generated in the ozone water, and ozone is dissolved at a high concentration. In addition to being able to supply the ozone water as it is, the ozone concentration can be maintained for a long time without the ozone being lost.

  Hereinafter, the best mode for carrying out the present invention will be described.

  FIG. 1 shows an example of an embodiment of the present invention, in which flow paths 15 and 6 formed by piping are respectively connected to the outflow side and the inflow side of the pressure dissolution unit 3. One end of the flow path 15 on the inflow side is connected to the pressure dissolving unit 3, and the other end is connected to an arbitrary water supply source 17 such as a water pipe 17 a and a water storage tank 17 b such as a bathtub. A pressurizing unit 1 is provided in the middle of the flow path 15. The pressurizing unit 1 is formed by, for example, a pump 18 that pumps water supplied from the water supply source 17 to the pressurizing and dissolving unit 3.

  The ozone injection part 2 is connected to the flow path 15 on the inflow side. The ozone injection part 2 is for supplying ozone to the flow path 15 and injecting it, and is formed by providing an ozone generator 13 and a pressure regulating valve 12 in the ozone injection pipe 11. The ozone generator 13 is provided closer to the flow path 15 than the pressure regulating valve 12, and as the ozone generator 13, for example, one that generates ozone from oxygen in the air by electric discharge can be used. In addition to forming the ozone injection part 2 using such an ozone generator 13, the ozone injection part 2 can be formed by supplying ozone from a cylinder filled with ozone. The connection position of the ozone injection part 2 to the flow path 15 may be a position upstream of the pressurizing / dissolving part 3 and is connected to the flow path 15 upstream of the pressurizing part 1 as shown in FIG. Alternatively, it may be either connected to the flow path 15 on the downstream side of the pressurizing unit 1.

  On the other hand, one end of the flow path 6 on the outflow side is connected to the pressure dissolution unit 3, and the other end is connected to an ozone water recovery tank (not shown) or the like and opened to the atmosphere. The flow path 6 is provided with a decompression section 4. In addition, a surplus ozone discharge unit 5 is provided in the pressure dissolving unit 3. The surplus ozone discharge part 5 is formed, for example, with a degassing valve that opens when the pressure in the pressure dissolving part 3 becomes a predetermined pressure or higher. The injection part 2 is connected in communication. In the illustrated embodiment, the connecting portion 10 is connected to the ozone injection pipe 11 at a position between the pressure adjustment valve 12 and the ozone generator 13, but may be at a position closer to the flow path 15 than the pressure adjustment valve 12. What is necessary is just to connect to the ozone injection piping 11 in the flow path 15 side rather than the ozone generator 13. FIG.

  In the ozone water production apparatus formed as described above, when the pressurization unit 1 formed by the pump 18 is operated, the water supplied from the water supply source 17 passes through the flow path 15 to the pressurization dissolution unit 3. Supplied by pumping. Thus, when water flows through the flow path 15, suction force acts on the ozone injection pipe 11 of the ozone injection section 2, and air in the atmosphere is sucked into the ozone generator 13 through the pressure adjustment valve 12. In the ozone generator 13, ozone is generated from oxygen in the air. The ozone thus generated is sucked into the flow path 15 from the ozone injection part 2 and ozone is injected into the water. Then, the water into which ozone has been injected in this manner is pumped and fed to the pressurizing / dissolving unit 3 by the pressurizing unit 1, and pressure is applied to the water and ozone in the pressurizing / dissolving unit 3 by the pushing force by this pumping. Become high pressure. Thus, by pressurizing water and ozone in the pressure dissolving part 3, ozone can be efficiently dissolved in water to a saturated amount or more, and ozone water in which ozone is dissolved at a high concentration is obtained. It is something that can be done.

  In addition, since water and ozone are forcibly and efficiently dissolved in the pressure-dissolving unit 3 in this way, ozone water in which ozone is dissolved at a high concentration can be generated in a short time. While the ozone water generated in the part 3 is sent out through the flow path 6, ozone can be dissolved in the water in the pressure dissolving part 3. Therefore, it is not necessary to form the pressure dissolving part 3 with a large volume such as a tank, and the apparatus scale can be reduced and the cost of the apparatus can be reduced.

  Here, if the total amount of ozone injected from the ozone injection unit 2 is not dissolved in water, surplus ozone that does not dissolve in water is generated in the pressure dissolution unit 3, but the excess ozone discharge unit 5 is provided in the pressure dissolution unit 3. Displacement of excess ozone that cannot be dissolved above the ozone dissolution saturation amount from the pressure dissolution unit 3 to stabilize the ratio of ozone and water in the pressure dissolution unit 3 due to the surplus ozone remaining, and pressure fluctuation It is possible to prevent ozone and maintain high ozone dissolution efficiency.

  Further, the surplus ozone discharged from the surplus ozone discharge unit 5 in this way is returned to the ozone injection unit 2 through the connecting unit 10 and is again injected into water from the ozone injection unit 2. Accordingly, ozone that has not been dissolved in the pressure dissolving part 3 can be effectively used without being discarded, and harmful ozone can be prevented from leaking to the outside and being contaminated. . At this time, only the surplus ozone returned from the surplus ozone discharge unit 5 may cause insufficient gas pressure to be injected in the ozone injecting unit 2. Therefore, the pressure adjusting valve 12 is adjusted to inhale air, and the ozone generator 13. Thus, ozone can be injected at a predetermined gas pressure by generating insufficient ozone.

  And the ozone water produced | generated in the pressurization melt | dissolution part 3 as mentioned above is sent out through the flow path 6, However Since ozone water is in the state pressurized to the high pressure in the pressurization melt | dissolution part 3, it is large as it is. When sent out under atmospheric pressure, air bubbles may be generated in the ozone water due to a rapid pressure drop, the amount of dissolved ozone may decrease, and cavitation may occur. For this purpose, in the present invention, when the pressure reducing unit 4 is provided in the flow path 6 and ozone water pressurized in the pressure dissolving section 3 is sent out through the flow path 6, the pressure reducing section 4 generates bubbles to atmospheric pressure. It is made to discharge, after reducing pressure without generating.

  Here, bubbles are generated when the ozone water having the same concentration as that generated in the pressure dissolving unit 3 is depressurized from the same pressure as that pressurized in the pressure dissolving unit 3 to the atmospheric pressure. The degree of decompression is determined in advance by calculation or measurement, and the pressure of the ozone water is stepped from the side where the ozone water flows in from the side where the ozone water flows in at the decompression unit 4 in advance. It is set so that it can be continuously reduced to atmospheric pressure gradually. Accordingly, the ozone water pressurized in the pressurizing and dissolving unit 3 is gradually reduced to atmospheric pressure at a reduced pressure that does not generate bubbles in the decompression unit 4, and then discharged from the tip of the flow path 6. Ozone water can be discharged without generating bubbles, and ozone water in which ozone is dissolved to a saturation amount or more in the pressure dissolution unit 3 is sent out and used in a stable high concentration state. It will be possible.

  FIG. 2 shows an example of a specific embodiment of the decompression unit 4, and a plurality of pressure regulating valves 7 ( 7a, 7b, 7c) is provided to form the decompression section 4. Thus, by forming the decompression unit 4 with the plurality of pressure regulating valves 7, the pressure of the ozone water can be gradually reduced step by step at a decompression degree that does not generate bubbles.

  Each pressure regulating valve 7a, 7b, 7c is set to depressurize at a degree of decompression that does not generate bubbles in ozone water, and this degree of decompression is set to a numerical value obtained in advance by calculation or measurement. Is. For example, when the pressurized pressure of ozone water sent out from the pressurizing / dissolving unit 3 to the flow path 6 is 0.5 MPa, it is determined by measurement that the amount of reduced pressure at which bubbles are not generated is 0.12 MPa. The pressure of the ozone water is reduced by 0.12 MPa by the pressure adjusting valve 7a and dropped to 0.38 MPa. Further, when the pressure of ozone water is 0.38 MPa, if it is found by measurement that the amount of reduced pressure at which bubbles are not generated is 0.16 MPa, the pressure of ozone water is reduced to 0 by the next pressure regulating valve 7b. Reduce pressure to 16 MPa and drop to 0.22 MPa. Furthermore, when the pressure of ozone water is 0.22 MPa, if it is found by measurement that the amount of reduced pressure at which bubbles are not generated is 0.22 MPa or more, the pressure of the ozone water is controlled by the next pressure regulating valve 7c. The pressure is reduced to 0.22 MPa, the pressure applied is reduced to 0 MPa, and the pressure can be reduced to atmospheric pressure. Note that the amount of pressure reduction by the pressure regulating valve 7 varies depending on the water temperature, the dissolved concentration of ozone, the pressure in the pressurized dissolving section 3, the diameter of the flow path 6, and the like. Thus, it is set as appropriate.

  FIG. 3 shows another example of a specific embodiment of the decompression unit 4, and a plurality of tubes 20a and 20b having different channel cross-sectional areas in the channel 6 connected to the pressure dissolution unit 3 are shown. 20c, and the decompression section 4 is formed by a plurality of pipe bodies 20a, 20b, 20c having different channel cross-sectional areas.

  In the embodiment of FIG. 3 (a), a plurality of tubes 20a, 20b, and 20c having different flow path cross-sectional areas, that is, different inner diameters, are integrally connected, and from the upstream side to the downstream side of the flow of ozone water. The diameters of the pipe bodies 20a, 20b, and 20c are gradually reduced. In the embodiment of FIG. 3 (b), a plurality of tubes 20a, 20b, 20c having different inner diameters are connected and connected via a reducer 21 so that the flow of ozone water flows from the upstream side to the downstream side. Then, the diameters of the tubular bodies 20a, 20b, and 20c are gradually reduced. Further, in the embodiment of FIG. 3C, the tubular bodies 20a, 20b, and 20c that continuously decrease in diameter from the upstream side to the downstream side of the flow of ozone water are integrally connected.

In FIG. 3, since the inner diameters of the tubes 20a, 20b, and 20c are φd ₁ > φd ₂ > φd ₃ , the flow rate of the ozone water in the tubes 20a, 20b, and 20c is V ₁ <. V ₂ <V _{3 is} satisfied, and the pressure of the ozone water in each of the tubular bodies 20a, 20b, 20c is P ₁ > P ₂ > P ₃ . Accordingly, the pressure P ₁ of the ozone water to be fed from the pressure dissolution unit 3 at a reduced pressure of bubbles does not occur, those in the by stepwise decompression of FIG 3 (a) (b), and FIG. 3 (c) those in the continuously reduced pressure, but can be lowered gradually to atmospheric pressure P _3.

FIG. 4 shows another example of a specific embodiment of the decompression unit 4. When ozone water is discharged through the channel 6 connected to the pressure dissolution unit 3, the inside of the channel 6 is shown. Due to the pressure loss when the ozone water flows, the pressure of the ozone water is gradually and continuously reduced at a decompression speed at which bubbles are not generated in the ozone water, and the pressure of the ozone water is reduced to atmospheric pressure. Thus in the embodiment of FIG. 4 (a), the pressure ozone water P ₁ in press-welding within the solution 3, to P ₂ ~P _n-1 when passing through the flow channel 6, ozone water The pressure is gradually and continuously reduced at a decompression rate at which no bubbles are generated (P ₁ > P ₂ > P _n-1 ), and the pressure P _{n of the} ozone water is reduced to atmospheric pressure at the end of the flow path 6. In addition, the flow path cross-sectional area and the pipe length L of the flow path 6 are set, and the pressure reducing part 4 is formed by the flow path 6 having such a flow path cross-sectional area and the pipe length L. Is.

The pipe length L can be set from the following equation. That is,
Fluid relational expression P = λ · (L / d) · (v ² / 2g)
[P is the pressure in the pressure dissolving section 3, λ is the coefficient of friction of the tube, d is the inner diameter, v is the flow velocity, and g is the acceleration]
From this, L = (P · d · 2g) / (λ · v ² ) can be derived, and the pipe length L of the flow path 6 can be obtained by calculation from this equation. As described above, the decompression section 4 can be formed only by forming the pipe length L of the flow path 6 to a predetermined length, and the structure of the apparatus can be made simpler. It is. The decompression section 4 formed by the flow path 6 having a long pipe length L can be formed by a long hose 4a as shown in FIG. 4B, for example.

  As described above, in the present invention, water and ozone are pumped by the pressurizing unit 1 to the pressurizing / dissolving unit 3, and water and ozone are pressurized in the pressurizing / dissolving unit 3 by the pressing pressure at this time so as to dissolve ozone. However, it is necessary to generate a necessary pressure in the pressurizing / dissolving portion 3 by receiving the pushing pressure. In order to secure the pressure that receives the indentation pressure from the pressurizing unit 1 as described above, it is conceivable to provide a throttle unit such as a throttle valve in the flow path 6 on the outflow side of the pressurizing and dissolving unit 3. When the throttle part is provided in the flow path 6, when the ozone water generated in the pressure dissolving part 3 is sent to the flow path 6 and discharged, a large pressure difference occurs before and after the throttle part, and the ozone water is rapidly depressurized. As a result, bubbles may be generated in the ozone water.

  Therefore, in the embodiment of FIG. 5, the pressure loss of the flow path 6 is used to secure the pressure that receives the indentation pressure without the need to provide the throttle portion in the flow path 6. At this time, with the length of the flow path 6 of each of the above embodiments, it is difficult to secure the pressure that receives the indentation pressure due to the pressure loss of the flow path 6. An extension channel 8 is added to the part. That is, the total pressure loss including the pressure reducing part 4 of the flow path 6 is calculated, and the pressure required to pressurize water and ozone in the pressure dissolving part 3 by the indentation pressure from the pressure applying part 1, and this The difference from the pressure loss of the flow path 6 is calculated, and the length of the pipe line in which the pressure loss of this difference occurs is calculated from the above formula, and the extended flow path 8 of this pipe length is changed to the flow path 6. They are added. In this way, the sum of the pressure loss of the flow path 6 and the pressure loss of the extension flow path 8 pressurizes water and ozone in the pressurizing and dissolving section 3 by the pressure of ozone and water pushed in by the pressurizing section 1. By adding the extension flow path 8 to the flow path 6 so that the pressure required for the pressure is reached, it is not necessary to use a throttling portion such as a throttling valve. It is possible to secure ozone pressure and dissolve ozone in water.

  FIG. 6 shows a specific example of an ozone water production apparatus, and water is introduced into the flow path 15 from the inlet 30. An ozone injection part 2 into which ozone is introduced is connected to the flow path 15, and water into which ozone is injected is pressurized and dissolved by a pressurization part 1 formed by a pump and a small capacity tank. 3 is pumped. Thus, the water into which ozone is injected is pumped to the pressure dissolving unit 3, thereby generating ozone water in which ozone is dissolved in water in the pressure dissolving unit 3. The ozone water is sent out from the pressure dissolution unit 3 to the flow path 6 and is sent out from the discharge port 31 at the tip of the flow path 6. The flow path 6 is provided with a pressure reducing unit 4, and the ozone water sent out from the pressure dissolving part 3 is discharged from the discharge port 31 at the end of the flow path 6 after being depressurized to atmospheric pressure, and bubbles are generated. Ozone water can be sent out in a state that does not. In the embodiment of FIG. 6, the decompression unit 4 is formed by connecting the tubular bodies 20a, 20b, and 20c having different inner diameters as shown in FIG.

  In this apparatus, by continuously operating the pressurizing unit 1 formed by the pump, the ozone injecting unit 2 and the pressurizing / dissolving unit 3 are continuously operated, and ozone water is continuously supplied to the decompressing unit 4. It can be supplied, and can be obtained by continuously discharging ozone water without generating bubbles from the discharge port 31 on the outflow side of the decompression unit 4. The decompression unit 4 is provided as a part of the flow path 6 for sending out the ozone water from the pressurizing and dissolving unit 3, and the decompression unit 4 sequentially increases the pressure of the ozone water from the inflow side to the outflow side. Since the pressure reducing part 4 can be formed as a relatively large flow path having an inner diameter of about 2 to 50 mm, for example, the inside of the pressure reducing part 4 may be clogged even if foreign matter is mixed in. There is nothing. Furthermore, by providing the decompression unit 4 having such a configuration, not only the laminar flow state in which the Reynolds number of ozone water flowing through the decompression unit 4 is smaller than the critical Reynolds number (Re = 2320), but also the critical Reynolds number. It is possible to cope with a turbulent flow state having a large Reynolds number. Furthermore, by forming the decompression section 4 as a flow path having a large inner diameter in this way, the supply amount of ozone water can be increased, and the decompression section 4 can be formed with only one flow path. Therefore, the apparatus configuration can be formed in a simple one. And when manufacturing ozone water using this apparatus, ozone water with a maximum ozone dissolution amount of 0.6 g / L can be obtained using water having a water temperature of 20 ° C.

  The ozone water produced as described above can be used to sterilize food-related items to be cleaned such as ingredients and tableware, sterilize and maintain freshness of fresh food products, and disinfect and disinfect toilets, sinks, sinks and baths. Odor, prevention of urine stone in toilets, sterilization and bleaching of washing machine and dishwasher objects, sterilization of wastewater in various industries such as livestock, agriculture, food, dyeing, organic matter decomposition, deodorization, decolorization, etc. It can be used for various purposes. In the present invention, as described above, ozone is dissolved in water in the pressure dissolution unit 3 by pressurization by the pressure unit 1, and the pressure is reduced to atmospheric pressure by the pressure reduction unit 4 so that bubbles are not generated. Since ozone water is manufactured, ozone can be prevented from leaking out as bubbles, and ozone water is completely dissolved in ozone water. In a normal use state where there is no change, air bubbles are hardly formed, ozone is not released from ozone water, and the environment is not polluted by ozone. Further, ozone in ozone water is not consumed or decomposed except for consumption during sterilization, organic matter decomposition, decolorization, bleaching and the like, and the effect of ozone water can be maintained for a long time.

  FIG. 7 shows another embodiment of the present invention, in which a concentration detection unit 37 formed by an ozone densitometer is provided in the flow path 6 on the downstream side of the flow of water from the decompression unit 4. The concentration detection unit 37 is electrically connected to the control unit 38, and the control unit 38 is electrically connected to the ozone generator 13, and the operation of the ozone generator 13 is controlled by the control unit 38. It is made to be able to. The concentration detection control unit 9 is formed by the concentration detection unit 37 and the control unit 38. Other configurations are the same as those in FIG.

  In this case, when the ozone water whose pressure is reduced by the pressure reducing unit 4 as described above passes through the flow path 6, the ozone concentration of ozone water is measured by the concentration detecting unit 37. The ozone concentration data measured by the concentration detector 37 is input to the controller 38. The control unit 38 includes a CPU, a memory, and the like, and controls the on / off of the ozone generator 13 based on the ozone concentration value input from the concentration detection unit 37 or the ozone generator 13. The generation of ozone by the ozone generator 13 is controlled by changing the voltage applied. That is, when the ozone concentration measured by the concentration detection unit 37 is smaller than the value registered in the memory of the control unit 38, the control by the control unit 38 turns on the ozone generator 13 or increases the applied voltage. The ozone amount injected into the water from the ozone injection unit 2 is increased so as to increase the dissolved concentration of ozone dissolved in the pressure dissolving unit 3, and the ozone measured by the concentration detection unit 37 When the concentration is larger than the value registered in the memory of the control unit 38, the ozone generator 13 is turned off or the applied voltage is lowered by the control of the control unit 38, and the ozone is injected into the water from the ozone injection unit 2. By reducing the amount of ozone, the dissolved concentration of ozone dissolved in the pressure dissolving unit 3 is lowered. In this way, the concentration of ozone water can be adjusted to the value of the ozone concentration registered in the memory of the control unit 38. Therefore, although the ozone concentration required in the ozone water differs depending on the application, the ozone concentration can be adjusted to the required ozone concentration by registering the necessary ozone concentration data in the memory of the control unit 38. It can generate water.

It is the schematic which shows an example of embodiment of this invention. It is the schematic which shows an example of a part of the same as the above. It shows another example of a part of the above, (a) (b) (c) is a schematic diagram respectively. It shows another example of a part of the above, (a) is a schematic view, (b) is a perspective view. It is the schematic which shows another example of a part of the same as the above. (A) (b) is a perspective view which shows an example of embodiment of this invention. It is the schematic which shows an example of other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pressurization part 2 Ozone injection part 3 Pressurization melt | dissolution part 4 Decompression part 5 Excess ozone discharge part 6 Flow path 7 Pressure adjustment valve 8 Extension flow path 9 Concentration detection control part 10 Connection part 11 Ozone injection piping 12 Pressure adjustment valve 13 Ozone Generator

Claims (8)

  A pressurizing unit that pumps water, an ozone injecting unit that injects ozone into water, and a pressurizing and dissolving unit that dissolves ozone in water by pressurizing the water into which ozone has been injected by the pressurizing unit; And a pressure reducing part for reducing the pressure of the ozone water in which ozone is dissolved in the pressure dissolving part to the atmospheric pressure sequentially from the inflow side to the outflow side of the ozone water. Each part of the dissolving part is continuously operated, ozone water is continuously supplied to the decompression part, and ozone water without generation of bubbles is continuously discharged from the outflow side of the decompression part. Ozone water production equipment.   The apparatus for producing ozone water according to claim 1, further comprising a surplus ozone discharge unit that discharges surplus ozone that does not dissolve in water in the pressure dissolution unit.   The apparatus for producing ozone water according to claim 2, comprising a connecting part for supplying surplus ozone from the surplus ozone discharge part to the ozone injection part.   The pressure reducing part is provided in a flow path for sending out ozone water from the pressure dissolving part, and comprises a plurality of pressure regulating valves for stepwise reducing the pressure of the ozone water to atmospheric pressure. The ozone water production apparatus according to any one of 1 to 3.   The depressurization part is composed of a flow path for sending out ozone water from the pressure dissolution part, which is formed so as to depressurize the pressure of ozone water to atmospheric pressure by adjusting at least one of the cross-sectional area and the flow path length. The ozone water production apparatus according to any one of claims 1 to 3, wherein the apparatus is an ozone water production apparatus.   The ozone water producing apparatus according to claim 4 or 5, wherein the decompression unit is formed by a single flow path.   The sum of the pressure loss of the flow path for sending ozone water from the pressure dissolution section and the pressure loss of the extension flow path added to this flow path is increased in the pressure dissolution section by the pressure of water and ozone pushed in by the pressure section. The apparatus for producing ozone water according to any one of claims 1 to 6, wherein an extension flow path is added to the flow path so as to obtain a pressure required to pressurize water and ozone.   An ozone generator that generates ozone and supplies ozone from an ozone injection unit, and a concentration detection control unit that measures the ozone dissolution concentration of ozone water and controls the generation of ozone by the ozone generator based on the measurement result The ozone water production apparatus according to any one of claims 1 to 7, wherein the ozone water production apparatus is formed.

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