JPH0580593U - Ozone sterilizer - Google Patents

Abstract

(57) [Summary] [Purpose] A structure that increases the dissolution rate of ozone in water,
In addition, prevent the reverse flow of water from the reaction chamber to the ozone supply means to prevent an accidental failure of the ozone supply means. [Structure] If a predetermined amount of ozonized air having a proper concentration is introduced into the reaction chamber 1 and then the water in the bath 2 is introduced into the reaction chamber 1 by a predetermined amount, the introduced water will be reticulated sheet 16
As a result, they are dispersed like a shower and fall, and come into forced and positive contact with ozone existing in a wide range in the reaction chamber 1. Further, since the ozone introduction pipe 7 that connects the ozone supply device 6 and the reaction chamber 1 penetrates the ceiling surface of the reaction chamber 1 and projects into the inside of the reaction chamber 1, the internal pressure of the reaction chamber 1 is assumed to be ozone. Even when the internal pressure of the introduction pipe 7 becomes higher, a large amount of water droplets attached to the ceiling surface of the reaction chamber 1 are less likely to be sucked into the ozone introduction pipe 7.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an ozone sterilizer for sterilizing and deodorizing drinking water or purifying bath water, for example.

[0002]

[Prior Art]

 In a conventional ozone sterilizer, ozone is continuously supplied from the bottom of a tank that stores water to be sterilized, and the ozone inside the tank is contacted while rising in the form of bubbles. The bacteria contained in water are sterilized. Regarding ozone that could not be dissolved with water in the process of this rise, there is one that is sent from the upper part of the tank to an exhaust ozone treatment device for decomposition treatment.

[0003]

[Problems to be solved by the device]

 Since the conventional device as described above merely raises ozone and does not have a structure for forcibly and positively making contact between water and ozone, the dissolution rate of ozone in water is inevitably low, and sterilization is unavoidable. It is pointed out that the efficiency is low.

On the other hand, the applicant of the present application, as shown in FIG. 5, introduces water supply means 51 and ozone supply means 52 with respective introduction pipes 53, 54 on the ceiling surface of the reaction chamber 50 corresponding to the aforementioned tank. And a discharge pipe 55 for discharging ozone-dissolved water is connected to the bottom of the reaction chamber 50, and a predetermined amount of ozone is supplied to the reaction chamber 50 to sterilize the reaction chamber 50. We are considering an ozone sterilizer that drops water by a specified amount to forcibly and positively make contact between ozone and water.

However, in the above ozone sterilizer, the end opening of the ozone introducing pipe 54 is joined to the ceiling surface of the reaction chamber 50 so as to be flush with each other. Therefore, for example, in the case where the check valve provided in the middle of the ozone introducing pipe 54 connecting the ozone supplying device 52 and the reaction chamber 50 fails when the ozone supplying device 52 is stopped, the ozone introducing pipe is When the internal pressure of 54 becomes lower than the internal pressure of the reaction chamber 50, a large amount of water droplets adhering to the ceiling surface of the reaction chamber 50 can be easily sucked into the ozone introduction pipe 54. When the backflow of water from the reaction chamber 50 to the ozone supply means 52 occurs in this way, the water entering the ozone introduction pipe 54 flows into an ozonizer (not shown) which is a component of the ozone supply means 52. , It could even damage this ozonizer.

The present invention was devised in view of such circumstances, and has a structure that enhances the rate of dissolution of ozone in water, and prevents the reverse flow of water from the reaction chamber to the ozone supply means. The purpose is to prevent an unexpected failure of the supply means.

[0007]

[Means for Solving the Problems]

 In order to achieve such an object, the present invention has the following configuration.

The ozone sterilizer of the present invention comprises a reaction chamber for dissolving ozone in water, an ozone supply means for introducing a predetermined amount of ozone into the reaction chamber, and water for introducing water to be sterilized into the reaction chamber from above. A supply means, a dispersion means for dispersing and dropping the water introduced into the reaction chamber in a shower shape, and a discharge pipe for discharging ozone-dissolved water in the reaction chamber from near the bottom surface of the reaction chamber, and It is characterized in that a pipe connecting the ozone supply means and the reaction chamber penetrates the ceiling surface of the reaction chamber and penetrates into the reaction chamber.

An end portion of the pipe that projects into the reaction chamber may be provided with an umbrella portion that extends downward.

[0010]

[Action]

 When a predetermined amount of ozone is supplied to the reaction chamber and water is dropped into the reaction chamber from above, the introduced water is dispersed like a shower by the dispersion means. As a result, water and ozone can be forcedly and positively mixed in contact with each other over a wide area of the reaction chamber, and the dissolution rate of ozone in water can be increased.

Since the pipe connecting the ozone supply means and the reaction chamber penetrates the ceiling surface of the reaction chamber and projects into the reaction chamber, the internal pressure of the pipe is temporarily lower than the internal pressure of the reaction chamber. Even when the temperature becomes low, a large amount of water droplets adhering to the ceiling surface of the reaction chamber becomes difficult to be sucked into the pipe located below the ceiling surface.

Moreover, if the protruding end portion of the pipe is provided with the umbrella portion that spreads downward, even if the above-mentioned unfavorable pressure relationship is established, water droplets attached to the outer periphery of the pipe and the umbrella portion are also formed. Almost no suction to the inner circumference of the umbrella.

[0013]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 and 2 show an embodiment of the present invention. In this embodiment, an example of a bactericidal device for bath water is given. In the figure, 1 is a reaction chamber, and this reaction chamber 1 is connected to a bath 2 via a water introduction pipe 3 and a discharge pipe 4, and a circulation pump 5 is provided in the middle of the water introduction pipe 3. .. When this circulation pump 5 is driven, the water in the bath 2 is sucked and guided to the upper side of the reaction chamber 1, and the water (or ozone-dissolved water) inside the reaction chamber 1 is passed from below to the bath 2. Will come back. The circulation pump 5, the water introduction pipe 3, and the bath 2 correspond to the water supply means described in the claims. In addition, a vertical water cylinder 21 is provided on the side surface of the reaction chamber 1 so as to communicate therewith. An upper limit water level sensor 22 is provided above the vertical water cylinder 21 and an abnormal lower limit water level sensor is provided below the vertical water cylinder 21. 23 are provided respectively. Both sensors 22 and 23 are set to a positive potential and the vertical water bottle 21 is set to a ground potential, so that water contacts the upper limit water level sensor 22 and the abnormal lower limit water level sensor 23. When both sensors are present, the sensors 22 and 23 respectively output detection signals. Reference numeral 24 is a partition plate for preventing corrugation.

Reference numeral 6 denotes an ozone supply device connected to the reaction chamber 1 via an ozone introduction pipe 7 (corresponding to the pipe described in the claims). The ozone supply device 6 supplies ozonized air having an appropriate concentration by mixing an appropriate amount of ozone in the air to the reaction chamber 1, and is sent by an air pump 8 for sending compressed air and an air pump 8. Dehumidifier 9 for dehumidifying compressed air, Ozonizer 10 for ozone-converting the air that has passed through dehumidifier 9, piping (reference numeral omitted) for connecting these constituent elements 8 to 10 in series, and inlet of Ozonizer 10. Of the first and second check valves 11A and 11B provided in the side pipe and the discharge side pipe, the first open / close valve 12A provided in the pipe between the air pump 8 and the dehumidifier 9, and the ozonizer 10. The inlet-side pipe and the outlet-side pipe are provided with second and third on-off valves 12B and 12C, respectively.

Reference numeral 13 is an exhaust ozone treatment device connected to the reaction chamber 1 via a purge pipe 14 and an exhaust valve 15. The exhaust ozone treatment device 13 is configured to perform adsorptive decomposition by activated carbon and treats unreacted ozone remaining inside the reaction chamber 1 to a safe concentration or less.

Reference numeral 16 is a reticulated sheet as a dispersion means attached above the inside of the reaction chamber 1 over the entire cross section of the reaction chamber 1. The mesh sheet 16 disperses water introduced into the reaction chamber 1 from above and drops it in a shower shape. For example, the mesh sheet 16 is formed into a mesh shape by punching Teflon sheet. The mesh size can be set arbitrarily.

Reference numeral 20 denotes a sequence controller. The sequence controller 20 appropriately controls the operations of the circulation pump 5, each component of the ozone supply device 6, and the exhaust valve 15 according to the following sterilization process.

The ozone introduction pipe 7 and the purge pipe 14 are inserted into the reaction chamber 1 while penetrating the ceiling surface of the reaction chamber 1, and also penetrate the mesh sheet 16. And it is plunging to the bottom. When the reticulated sheet 16 is used, the pressure in the upper space is higher than that in the lower space with the reticulated sheet 16 as a boundary. Therefore, in order to prevent the backflow of water droplets attached to both pipes 7 and 14, As described above, it is desirable that both the pipes 7 and 14 are projected below the mesh sheet 16. Of course, when other members such as a shower nozzle are used as a means for dispersing the water introduced into the reaction chamber 1 in the form of a shower without using the mesh sheet 16, both pipes 7 into the reaction chamber 1 are used. , 14 may be appropriately set.

Next, the sterilization process of the apparatus of this embodiment will be described with reference to the timing chart of FIG. This sterilization treatment consists of a series of treatments including the ozone introduction process, reaction process, and exhaust process, and multiple sets are repeated as necessary.

When an operation switch (not shown) is turned on, the exhaust valve 15 is opened and the circulation pump 5 is started to introduce the water in the bath 2 into the reaction chamber 1 by an appropriate amount. When the upper limit water level sensor 22 detects the upper limit water level H1, preparation for ozone introduction is performed. This preparation is performed to raise the internal pressure of the path from the air pump 8 in the ozone supply device 6 to the ozonizer 10 to a predetermined pressure. The exhaust valve 15 is closed while the first and second opening / closing valves are closed. The air pump 8 is driven with 12A and 12B open.

When an appropriate time t1 (for example, 1 minute) has elapsed from the time when the driving of the air pump 8 was started, the ozonizer 10 is driven and the third opening / closing valve 12C is opened, assuming that the above-mentioned preparation is completed. Thus, the introduction of ozonized air having a desired concentration (for example, ozone concentration of 1000 ppm) into the reaction chamber 1 is started. As a result, the internal pressure of the reaction chamber 1 rises and the water level begins to drop. When an appropriate time t2 (for example, 1 minute) elapses from the time when the water level falls below the upper water level H1 and the upper water level detection signal 22 is not input from the upper water level sensor 22, the air pump 8 and the ozonizer 10 are stopped. At the same time, the first to third on-off valves 12A to 12C are closed (ozone introduction step). The supply amount of this ozonized air is, for example, 1 liter per minute. When the introduction of ozone is stopped, the water level in the reaction chamber 1 becomes H2.

At the same time as the introduction of ozone, the water in the bath 2 is continuously introduced into the reaction chamber 1 by a fixed amount by the circulation pump 5, so that the water and ozone are contacted and mixed in the reaction chamber 1. (Reaction step). At this time, the water introduced is used as a shower from the entire cross section of the reaction chamber 1 by the mesh sheet 16, so that the amount of contact with ozone inside the reaction chamber 1 increases.

When an appropriate time t3 (for example, 30 to 90 minutes) has elapsed from the time when the introduction of ozone was stopped, it is determined that the reaction between the introduced ozone and water is almost completed, and the exhaust valve 15 is turned on for an appropriate time t4 (eg, Open for 1 minute) and evacuate the inside of the reaction chamber 1 (evacuation step). As a result, the water level in the reaction chamber 1 rises to H1.

During the reaction, the water level in the reaction chamber 1 is maintained between H1 and H2. However, for example, the ozone supply amount becomes too large and the water level is set below H2. When the abnormal lower limit water level sensor 23 detects that the temperature is below H3, the sterilization process is immediately stopped to prevent bubbles containing ozone from easily flowing out from the reaction chamber 1.

After repeating such a series of processes for the required number of sets, the circulation pump 5 is stopped and the opening / closing valve 18 for cutting off the connection with the bath 2 provided in the water introduction pipe 3 and the discharge pipe 4, respectively. Close 19

As described above, since the water and ozone are forcedly and positively mixed in contact with each other over a wide area of the reaction chamber 1, the dissolution rate of ozone in water is increased. However, if the reaction time t2 is set appropriately, the ozone in the reaction chamber 1 can be completely dissolved in water, so the amount of unreacted ozone discharged can be greatly reduced and returned to the bath 2. It is possible to prevent bubbles of ozone from being mixed with ozone-dissolved water. Further, since the ozone introducing pipe 7 and the purging pipe 14 penetrate the ceiling surface of the reaction chamber 1 and project into the inside of the reaction chamber 1, the internal pressure of both the pipes 7 and 14 is assumed to be the internal pressure of the reaction chamber 1. Even when the temperature becomes lower than the above, a large amount of water droplets adhering to the ceiling surface of the reaction chamber 1 is not sucked into the pipe located below the ceiling surface at all, and as a result, one component of the ozone supply device 6 It becomes possible to prevent a failure of a certain ozonizer 10 or the exhaust ozone treatment device 13.

FIG. 3 shows another embodiment of the device of the present invention. The configuration different from that of the above-described embodiment is that a downwardly expanding umbrella portion 17 is attached to each of the projecting end portions of the ozone introduction pipe 7 and the purge pipe 14. In this way, water droplets adhering to the outer periphery of each umbrella portion 17 of the ozone introduction pipe 7 and the purge pipe 14 are less likely to be sucked into the inner periphery of the umbrella portion 17, so that reaction to the inside of both pipes 7 and 14 is prevented. Most of the water inside chamber 1 is not inhaled. The shape of the umbrella portion 17 is not particularly limited.

FIG. 4 shows still another embodiment of the device of the present invention. The configuration different from the embodiment shown in FIG. 3 is that the end portions of the ozone introducing pipe 7 and the purging pipe 14 are respectively inserted into the inner portion of the umbrella portion 17 described above. By doing so, even if water droplets adhere to the inner peripheral surface of the umbrella portion 17, the water droplets are hardly sucked into the ozone introduction pipe 7 and the purge pipe 14.

The present invention is not limited to the above embodiment. For example, in the above embodiment, the case of sterilizing the bath water is described, but it goes without saying that the device of the present invention can be used for sterilizing drinking water and other water. The sterilization operation may be started automatically by confirming that there is no bather in the bathroom, in addition to the operation of turning on the operation switch shown in this embodiment. .. Further, as a configuration for introducing ozone, in addition to the configuration for introducing a constant concentration of ozonized air shown in this embodiment for a certain period of time, the ozone concentration in the reaction chamber 1 is detected, and the introduction time and the amount of ozonized air are introduced. May be controlled. In addition, in the above embodiment, the introduction amount of water and ozone and the reaction period are controlled by time management by a timer. However, in addition to this, the reaction chamber 1 is provided with upper and lower limit water level sensors and the like. It is also possible to control the amount of water or ozone introduced and the reaction period by using the detection output of.

[0031]

[Effect of the device]

 As described above, in the present invention, water and ozone can be forcibly and positively contact-mixed with each other by dispersing and dropping the water in a shower shape into the ozone atmosphere in the reaction chamber. The dissolution rate of ozone can be increased significantly compared to the conventional method. Moreover, since the pipe connecting the ozone supply means and the reaction chamber penetrates the ceiling surface of the reaction chamber and penetrates into the reaction chamber, the internal pressure of the pipe is temporarily lower than the internal pressure of the reaction chamber. However, even if it happens, a large amount of water droplets adhering to the ceiling surface of the reaction chamber will not be sucked into the pipe located below the ceiling surface, and as a result, the ozonizer, which is one component of the ozone supply means, should not be used. It will be possible to prevent the breakdown.

Further, if the above-mentioned protruding end portion of the pipe is provided with the umbrella portion that spreads downward, even if the above-mentioned unfavorable pressure relationship is established, water droplets attached to the outer circumference of the pipe and the umbrella portion are also inside the umbrella portion. Since it is difficult to be sucked into the circumference, almost no water in the reaction chamber is sucked into the pipe.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of the device of the present invention.

FIG. 2 is a diagram showing a timing chart used for explaining the operation.

FIG. 3 is a schematic configuration diagram of another embodiment of the device of the present invention.

FIG. 4 is a schematic configuration diagram of still another embodiment of the device of the present invention.

FIG. 5 is a schematic configuration diagram of a conventional device.

[Explanation of symbols]

 1 Reaction chamber 2 Bathtub 3 Water introduction pipe 4 Discharge pipe 5 Circulation pump 6 Ozone supply device 7 Ozone introduction pipe

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Mitsuaki Kanazawa 32 Akashi-cho, Chuo-ku, Kobe, Hyogo Prefecture

Claims (2)

[Scope of utility model registration request] 1. A reaction chamber for dissolving ozone in water, an ozone supply unit for introducing a predetermined amount of ozone into the reaction chamber, a water supply unit for introducing water to be sterilized into the reaction chamber from above, and the reaction. Dispersing means for dispersing and dropping the water introduced into the chamber in a shower shape, and a discharge pipe for discharging ozone-dissolved water in the reaction chamber from near the bottom surface of the reaction chamber, and an ozone supply means and a reaction chamber An ozone sterilizer which is characterized in that a pipe connecting the above is inserted into the inside of the reaction chamber in a state of penetrating the ceiling surface of the reaction chamber. 2. The ozone sterilizer according to claim 1, wherein an end of the pipe that projects into the reaction chamber is provided with a downwardly extending umbrella portion.