WO2014010304A1

WO2014010304A1 - Ozone-containing liquid generating device and cleaning apparatus provided with same

Info

Publication number: WO2014010304A1
Application number: PCT/JP2013/063564
Authority: WO
Inventors: 藤田　昇; 渡邊　圭一郎; 博之阿久澤; 尾崎　正昭
Original assignee: シャープ株式会社
Priority date: 2012-07-13
Filing date: 2013-05-15
Publication date: 2014-01-16
Also published as: JP2013240777A; CN104379244A

Abstract

An ozone-containing liquid generating device (1A) is provided with: an ozone generator (10) for generating ozone; a gas-liquid mixer (20) for producing ozone water (100) by having water contain the generated ozone; a gas introduction path (L4) for introducing a starting material gas into the ozone generator (10); a liquid introduction path (L1) for introducing water into the gas-liquid mixer (20); a gas-liquid separator (30) for separating the produced ozone water (100) into a gas and a liquid; an ozone-containing liquid lead-out path (L3) for leading out the ozone water (100) after the gas-liquid separation to the outside; a gas return path (L6) for returning the residual gas separated from the ozone water (100) to the ozone generator (10); and a liquid trap (40) that is provided on the gas return path (L6).

Description

Ozone-containing liquid generating apparatus and cleaning apparatus equipped with the same

The present invention relates to an ozone-containing liquid generating device that generates an ozone-containing liquid and a cleaning device including the ozone-containing liquid generating device.

The ozone-containing liquid generating device includes an ozone generator and a gas-liquid mixer, and generates an ozone-containing liquid by mixing ozone gas generated by the ozone generator with a liquid such as water in the gas-liquid mixer. It is. The generated ozone-containing liquid is widely used for cleaning applications such as sterilization and inactivation of harmful substances.

Usually, the ozone-containing liquid generating device is provided with a gas-liquid separator that gas-liquid separates the generated ozone-containing liquid. The gas-liquid separator is for separating and removing residual gas containing ozone gas, which could not be dissolved in the liquid in the gas-liquid mixer, from the ozone-containing liquid. The ozone-containing liquid generating apparatus provided with the gas-liquid separator is roughly classified into a so-called non-circulation type and a so-called circulation type.

The non-circular ozone-containing liquid generator temporarily stores the residual gas separated from the ozone-containing liquid in the gas-liquid separator in a storage tank or the like, and decomposes the ozone gas contained in the residual gas. Then, the ozone concentration is lowered to such an extent that the human body is not affected at least, and then it is exhausted to the outside.

On the other hand, the circulation type ozone-containing liquid generator recovers the residual gas separated from the ozone-containing liquid in the gas-liquid separator by connecting the gas-liquid separator and the ozone generator through a gas reflux path. This is again configured to be supplied as a raw material gas to the ozone generator. For example, Japanese Patent Laid-Open No. 2-207892 (Patent Document 1) discloses an ozone water generating device classified as the circulation type ozone-containing liquid generating device.

This circulation type ozone-containing liquid generation device not only has the advantage that a mechanism for decomposing ozone gas is unnecessary, but also recycles ozone gas. Utilization can increase the utilization efficiency of ozone gas or increase the ozone concentration in the generated ozone-containing liquid, so that the advantage of improving the generation efficiency of the ozone-containing liquid can be obtained.

Japanese Patent Laid-Open No. 2-207892

Here, in the case of the circulation type ozone-containing liquid generating device described above, the residual gas flowing through the gas reflux path contains liquid vapor for dissolving ozone in a state close to saturation. For this reason, when the residual gas comes into contact with the flow path wall of the gas reflux path, condensation occurs, and the dew condensation liquid adheres to the flow path wall. The condensed liquid adhering to the flow path wall is pushed downstream by the residual gas flowing through the gas reflux path, flows into the ozone generator, and adheres to the ozone generating electrode of the ozone generator.

Due to the occurrence of such an event, in the circulation type ozone-containing liquid generator, the discharge at the ozone generating electrode becomes unstable or the ozone generating electrode itself is oxidized by the condensed liquid, resulting in the generation of ozone. There was a problem that it would lead to deterioration or failure of the performance of the vessel.

In this regard, in the ozone water generator disclosed in Patent Document 1, a dehumidifier is installed on the gas reflux path, and the residual gas returned to the ozone generator is thereby dried. The above-described problem is solved by being configured as follows. Patent Document 1 describes that a dehumidifier can be one that adsorbs and removes moisture with a desiccant such as silica gel, or one that actively cools residual gas and separates and removes moisture. Yes.

However, since these dehumidifiers are all of a complicated and large-scale configuration, when adopting the configuration, the problem that the ozone-containing liquid generation device is inevitably enlarged as a whole, The problem that manufacturing cost, running cost, etc. will increase will arise separately.

Accordingly, the present invention has been made to solve the above-mentioned problems, and can prevent the deterioration of performance and the occurrence of failure, can be manufactured at a low cost and in a small size, and can further reduce the running cost. It is an object of the present invention to provide a generation device and a cleaning device including the same.

An ozone-containing liquid generating apparatus according to the present invention generates an ozone-containing liquid by containing ozone generating means for generating ozone using a gas containing oxygen and ozone generated by the ozone generating means. The ozone-containing liquid generating means, a gas introduction path for introducing a gas containing oxygen to the ozone generating means, a liquid introduction path for introducing a liquid into the ozone-containing liquid generating means, and the ozone-containing liquid generating means Gas-liquid separation means for temporarily storing the ozone-containing liquid and gas-liquid separation of the ozone-containing liquid, and an ozone-containing liquid lead-out path for deriving the ozone-containing liquid after gas-liquid separation by the gas-liquid separation means to the outside And a gas reflux path for refluxing the gas containing ozone separated from the ozone-containing liquid by the gas-liquid separation means to the ozone generation means, and a liquid trap provided on the gas reflux path. .

Here, the ozone-containing liquid is a dissolved ozone liquid in a state where ozone is dissolved in a solvent, an ozone gas-containing liquid in which ozone is contained in a liquid state in a gaseous state, ozone containing both dissolved ozone and gaseous ozone. Contains liquid. Moreover, as a solvent in which ozone is dissolved or a liquid in which ozone is contained in a gaseous state, water is typically exemplified, but the invention is not limited thereto.

In the ozone-containing liquid generating apparatus according to the present invention, the liquid trap preferably has a trap chamber having a cross-sectional area larger than the cross-sectional area of the gas reflux path.

In the ozone-containing liquid generating apparatus according to the present invention, it is preferable that the liquid captured by the liquid trap is collected by the gas-liquid separation means.

In the ozone-containing liquid generating apparatus according to the present invention, the liquid trap is preferably provided integrally with the gas-liquid separation means.

In the ozone-containing liquid generating apparatus according to the present invention, the liquid trap has a trap chamber having a cross-sectional area larger than the cross-sectional area of the gas reflux path, and is positioned directly above the gas-liquid separation means. When the gas-liquid separation means is provided integrally with the gas-liquid separation means, and the gas-liquid separation means has a gas-liquid separation chamber for temporarily storing the ozone-containing liquid and separating it. The gas recirculation path in which the bottom of the trap chamber is located on the gas-liquid separation means side when viewed from the liquid trap so that the liquid trapped by the liquid trap is recovered by the gas-liquid separation means It is preferable to have an inclined shape inclined toward the connection end side with respect to the liquid trap.

In this case, the gas-liquid separation chamber and the trap chamber are partitioned by a partition wall formed with an opening as the gas reflux path located on the gas-liquid separation means side when viewed from the liquid trap. In the case, the gas-liquid separation means and the liquid trap integrated together define the first container member having an upper surface opening that defines the gas-liquid separation chamber, the partition member constituting the partition, and the trap chamber. It is preferable that the first container member, the partition wall member, and the second container member are stacked in this order from the lower side to the upper side.

In this case, the gas introduction path includes an intake port for introducing a gas containing oxygen, and a gas containing oxygen only in a direction from the side where the intake port is located toward the side where the ozone generating means is located. And a flow restriction means that enables the flow of the gas, the connection end of the gas reflux path located on the ozone generating means side when viewed from the liquid trap is directly above the opening. It is preferable that the flow restricting means is provided at a position immediately above the opening so as to communicate with the trap chamber.

In the ozone-containing liquid generating apparatus according to the present invention, the connection end to the liquid trap of the gas reflux path located on the ozone generating means side when viewed from the liquid trap defines the trap chamber. It is preferable to be provided so as to protrude from the inner wall surface of the trap toward the inside of the trap chamber.

In the ozone-containing liquid generating apparatus according to the present invention, it is preferable that the ozone-containing liquid generating means is constituted by a gas-liquid mixing means for containing ozone in a liquid using the venturi effect.

The cleaning device according to the present invention includes the ozone-containing liquid generating device according to the present invention described above.

ADVANTAGE OF THE INVENTION According to this invention, it can be set as the ozone containing liquid production | generation apparatus which can prevent degradation of a performance and generation | occurrence | production of a failure, can be manufactured in low cost and small size, and also can reduce running cost, and a washing | cleaning apparatus provided with the same. .

It is a figure which shows schematic structure of the ozone containing liquid production | generation apparatus in Embodiment 1 of this invention. It is a schematic cross section of the gas-liquid mixer shown in FIG. FIG. 2 is a schematic cross-sectional view in the vicinity of a liquid trap shown in FIG. 1. It is a schematic cross section which shows the other structural example of the liquid trap shown in FIG. It is a figure which shows schematic structure of the ozone containing liquid production | generation apparatus in Embodiment 2 of this invention. FIG. 6 is a schematic cross-sectional view in the vicinity of the liquid trap shown in FIG. 5. It is a graph which shows the change of the performance with time of the ozone containing liquid production | generation apparatus which concerns on an Example and a comparative example. It is a schematic cross section of the vicinity of a liquid trap of an ozone-containing liquid generation apparatus according to a modification based on Embodiment 2 of the present invention. FIG. 9 is a schematic plan view when the bottom surface of the trap chamber of the liquid trap shown in FIG. 8 is viewed from above.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the embodiment described below, an ozone-containing liquid generating apparatus that can be attached as a cleaning unit to a normal water supply facility by being unitized, thereby enabling generation of ozone water as an ozone-containing liquid. The case where this invention is applied to is illustrated. In addition, the same code | symbol is attached | subjected in the figure about the same or common part, and the description is not repeated.

(Embodiment 1)
FIG. 1 is a diagram showing a schematic configuration of an ozone-containing liquid generation apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a schematic cross-sectional view of the gas-liquid mixer shown in FIG. First, with reference to these FIG. 1 and FIG. 2, the schematic structure of the ozone containing liquid production | generation apparatus 1A in this Embodiment and the detailed structure of the gas-liquid mixer 20 are demonstrated.

As shown in FIG. 1, an ozone-containing liquid generating apparatus 1A in the present embodiment includes an ozone generator 10 as an ozone generating means, a gas-liquid mixer 20 as an ozone-containing liquid generating means, and a gas-liquid separating means. Gas-liquid separator 30, liquid trap 40, liquid introduction path L1, ozone-containing liquid conveyance path L2, ozone-containing liquid outlet path L3, gas introduction path L4, ozone conveyance path L5, and gas reflux path L6 is mainly provided.

The liquid introduction path L1 has a liquid supply port 2 at one end and is connected to the gas-liquid mixer 20 at the other end. The liquid supply port 2 provided at one end of the liquid introduction path L1 is connected to a water supply facility that is an external liquid supply source, whereby the liquid introduction path L1 receives supply of tap water as a liquid from the water supply facility. The liquid introduction path L1 that receives the supply of tap water through the liquid supply port 2 introduces the supplied tap water into the gas-liquid mixer 20 from the other end.

The gas introduction path L4 has an intake port 4 at one end and is connected to the ozone generator 10 at the other end. From the intake port 4 provided at one end of the gas introduction path L4, air that is a gas containing oxygen serving as a raw material gas for generating ozone gas is sucked, and the gas introduction path L4 is supplied with air from the outside. Receive. The gas introduction path L4 that has been supplied with air through the intake port 4 introduces the supplied air into the ozone generator 10 from the other end.

The ozone transport path L5 has one end connected to the ozone generator 10 and the other end connected to the gas-liquid mixer 20. A gas containing ozone gas generated in the ozone generator 10 is introduced from the one end of the ozone transport path L5, whereby the ozone transport path L5 is supplied with the gas from the ozone generator 10. The ozone transport path L5 that has been supplied with a gas containing ozone gas through the one end introduces the supplied gas into the gas-liquid mixer 20 from the other end.

The ozone-containing liquid conveyance path L2 has one end connected to the gas-liquid mixer 20 and the other end connected to the gas-liquid separator 30. Ozone water as an ozone-containing liquid generated in the gas-liquid mixer 20 is introduced from the one end of the ozone-containing liquid conveyance path L2, and the ozone-containing liquid conveyance path L2 is thus supplied from the gas-liquid mixer 20 to the ozone. Get a water supply. The ozone-containing liquid conveyance path L2 that has been supplied with ozone water through the one end introduces the supplied ozone water into the gas-liquid separator 30 from the other end.

One end of the ozone-containing liquid lead-out path L3 is connected to the gas-liquid separator 30, and the discharge port 3 is provided at the other end. Ozone water after gas-liquid separation is performed in the gas-liquid separator 30 is introduced from the one end of the ozone-containing liquid lead-out path L3, whereby the ozone-containing liquid lead-out path L3 is connected to the gas-liquid separator 30 from the gas-liquid separator 30. Receives ozone water after gas-liquid separation. The ozone-containing liquid lead-out path L3 that has received the supply of ozone water after gas-liquid separation through the one end directs the supplied ozone water after separation from the discharge port 3 provided at the other end to the outside. To discharge.

The gas reflux path L6 has one end connected to the gas-liquid separator 30 and the other end connected to the ozone generator 10. From the one end of the gas reflux path L6, residual gas, which is a gas containing ozone gas separated from ozone water by gas-liquid separation in the gas-liquid separator 30, is introduced. Residual gas is supplied from the gas-liquid separator 30. The gas recirculation path L6 that has been supplied with the residual gas through the one end returns the supplied residual gas to the ozone generator 10 as a raw material gas from the other end.

In FIG. 1, the ozone water that has been subjected to gas-liquid separation in the gas-liquid separator 30 and the ozone water that has been separated from the gas-liquid separation discharged from the discharge port 3 are not distinguished from each other. This is shown using.

The ozone generator 10 generates ozone gas from the raw material gas introduced through the gas introduction path L4. As the ozone generator 10, one that generates ozone gas by using any one of a photochemical reaction method, a radiation irradiation method, and a discharge method can be used. Particularly preferably, one that uses a discharge method is selected and used. Is done. There are mainly a discharge method using a silent discharge method and a corona discharge method, and any of them can be used.

In the present embodiment, a silent discharge type is used as the ozone generator 10. The silent discharge type ozone generator 10 generates a silent discharge by applying an AC voltage between a pair of ozone generation electrodes sandwiching an insulator, and passes a gas containing oxygen at atmospheric pressure or higher between the ozone generation electrodes. Thus, ozone is generated.

The gas-liquid mixer 20 generates ozone water 100 as an ozone-containing liquid from tap water as a liquid introduced through the liquid introduction path L1 and a gas containing ozone gas introduced through the ozone transport path L5. Is to be generated. Here, in the present embodiment, as the gas-liquid mixer 20, a venturi-type gas-liquid mixing means capable of containing a gas containing ozone gas in tap water by utilizing the Venturi effect is employed. .

As shown in FIG. 2, the gas-liquid mixer 20 includes a large-diameter channel portion 21 into which liquid is introduced, and a liquid that is located downstream of the large-diameter channel portion 21 and flows through the large-diameter channel portion 21. A small-diameter channel portion 22 to be introduced, and a conical channel portion 23 including a frustoconical channel that is located downstream of the small-diameter channel portion 22 and into which the liquid flowing through the small-diameter channel portion 22 is introduced. And have. The gas-liquid mixer 20 has a gas introduction passage portion 24 into which gas is introduced, and the gas introduction passage portion 24 communicates with the small-diameter passage portion 22 described above.

The other end of the liquid introduction path L1 described above is connected to the large diameter flow path section 21, and the other end of the ozone transport path L5 described above is connected to the gas introduction path section 24. The one end of the ozone-containing liquid conveyance path L2 is connected to the conical channel section 23.

When tap water as a liquid is introduced from the liquid introduction path L1 into the large-diameter channel portion 21, the tap water flowing through the large-diameter channel portion 21 is smaller in diameter than the large-diameter channel portion 21. 22 is introduced. Therefore, as is known from Bernoulli's theorem, in the small-diameter channel portion 22, the flow rate of tap water increases and the static pressure decreases.

As a result, the static pressure of tap water flowing through the small-diameter channel portion 22 becomes negative, and the gas containing ozone gas is sucked into the small-diameter channel portion 22 from the ozone transport path L5 through the gas introduction passage portion 24. Is done. Therefore, in the small-diameter channel portion 22, the gas containing the sucked ozone gas is mixed into the tap water, and the mixed ozone gas is dissolved in the tap water. Thereby, the ozone water 100 is generated in the small-diameter channel portion 22.

In the gas-liquid mixer 20, it is preferable that the mixed ozone gas is completely dissolved in the tap water. However, due to the occurrence of cavitation phenomenon, etc., the gas containing ozone gas exists in the liquid state in a part of bubbles. Will do.

The generated ozone water 100 is introduced into the conical channel portion 23, and then discharged from the conical channel portion 23 and introduced into the ozone-containing liquid conveyance path L2.

In this way, by using the gas-liquid mixer 20 which is a venturi-type gas-liquid mixing means, the gas containing the ozone gas is self-primed by the action of the gas-liquid mixer 20 and mixed into the tap water. Therefore, power for mixing the gas into tap water becomes unnecessary, and not only the running cost can be reduced, but also the manufacturing cost can be reduced with the simplification of the configuration.

As shown in FIG. 1, the gas-liquid separator 30 temporarily stores the ozone water 100 and gas-liquid separates it, and includes a container that can store the ozone water 100 and residual gas. In the gas-liquid separator 30, residual gas containing ozone gas that has not been dissolved in the tap water in the gas-liquid mixer 20 is separated from the ozone water 100.

In the gas-liquid separator 30, the residual gas floats on the liquid surface based on the specific gravity difference, is separated from the ozone water 100, and is stored above the gas-liquid separator 30. Therefore, only ozone water 100 that does not contain residual gas is stored below the gas-liquid separator 30, and the gas-liquid separator 30 is connected to the discharge port 3 via the ozone-containing liquid lead-out path L3. Only ozone water 100 that does not contain residual gas is discharged.

Further, one end of the above-described gas reflux path L6 is connected above the gas-liquid separator 30. The exhaust port provided in the container of the gas-liquid separator 30 connected to the gas reflux path L6 is higher in the vertical direction than the exhaust port of the gas-liquid separator 30 connected to the ozone-containing liquid lead-out path L3 (that is, It is arranged at a high place. Thereby, the residual gas containing the ozone gas stored in the gas-liquid separator 30 is discharged | emitted via the said exhaust port with respect to the gas reflux path L6.

In the gas-liquid separator 30, it is preferable that the residual gas containing the ozone gas that has not been dissolved in the tap water in the gas-liquid mixer 20 is completely separated from the ozone water 100. The gas containing the ozone gas contained in the gas does not necessarily need to be separated from the ozone water 100, and the residual gas containing the ozone gas contained in the ozone water 100 as relatively large bubbles without being sufficiently refined. Only this may be separated from the ozone water 100.

The liquid trap 40 is provided on the gas reflux path L6 described above. The liquid trap 40 is for capturing the condensed liquid generated in the gas reflux path L6. Here, in the present embodiment, the liquid trap 40 is provided at a position in the middle of the gas reflux path L6. The details of the liquid trap 40 will be described later.

A check valve 5 is provided in the gas introduction path L4. The check valve 5 is a flow restriction unit that restricts the flow direction of the fluid in one direction, and opens when the pressure on the inlet 4 side of the gas introduction path L4 is higher than the pressure on the ozone generator 10 side, Close when low.

By providing the check valve 5, the gas introduction path L4 circulates the air as the raw material gas only in the direction from the inlet 4 side toward the ozone generator 10 side. Therefore, even if the pressure on the ozone generator 10 side of the gas introduction path L4 rises higher than the pressure on the intake port 4 side, the ozone gas flows backward and is discharged from the intake port 4 to the outside. Can be prevented and safety can be improved.

Note that, instead of the check valve 5 described above, a flow rate control valve capable of controlling the flow rate of the air as the raw material gas may be provided in the gas introduction path L4 as a flow restricting means. The flow rate control valve includes, for example, a valve body capable of closing the gas introduction path L4. By adjusting the valve opening amount of the valve body, the flow control valve serves as a raw material gas from the intake port 4 side toward the ozone generator 10 side. The air flow rate can be adjusted. More specifically, a mechanical type that does not require power, an electronic electromagnetic valve that uses power, or the like can be used as the flow restricting means.

Next, an operation for generating ozone water 100 as an ozone-containing liquid in the ozone-containing liquid generating apparatus 1A according to the present embodiment will be described with reference to FIG.

The tap water introduced into the liquid introduction path L1 from the water supply facility which is an external liquid supply source through the liquid supply port 2 is introduced into the gas-liquid mixer 20 and flows through the gas-liquid mixer 20. Accordingly, due to the self-priming action of the gas-liquid mixer 20 described above, air as a raw material gas is stored in the gas-liquid separator 30 via the intake port 4 and the gas introduction path L4 and also via the gas reflux path L6. The resulting residual gas is introduced into the ozone generator 10 as a raw material gas. Thereby, in the ozone generator 10, the gas containing ozone gas is generated, and the gas containing the generated ozone gas is supplied to the gas-liquid mixer 20 via the ozone conveyance path L5.

The gas containing the supplied ozone gas is mixed into the tap water in the gas-liquid mixer 20, whereby the ozone water 100 is generated in the gas-liquid mixer 20. The generated ozone water 100 is introduced into the gas-liquid separator 30 via the ozone-containing liquid conveyance path L2, and the gas-liquid separation is performed in the gas-liquid separator 30, and the residual gas contained in the ozone water 100 is removed. After being separated, it is introduced into the ozone-containing liquid lead-out path L3 and discharged toward the outside through the discharge port 3. The residual gas separated from the ozone water 100 by the gas-liquid separator 30 is recovered via the gas recirculation path L6 and sent again to the ozone generator 10 via the gas introduction path L4.

Here, since the residual gas flowing through the gas recirculation path L6 contains water vapor in a state close to saturation, condensation occurs when the residual gas comes into contact with the flow path wall of the gas recirculation path L6. Ozone water 100 as a liquid is generated. When the ozone water 100 as the generated dew condensation liquid flows into the ozone generator 10, it leads to performance deterioration or failure of the ozone generator 10 as described above. Thus, in the present embodiment, the problem is solved by providing the liquid trap 40 on the gas reflux path L6 as described above.

FIG. 3 is a schematic cross-sectional view of the vicinity of the liquid trap shown in FIG. Hereinafter, the detailed configuration of the liquid trap 40 and the reason why the above-described problem can be solved will be described with reference to FIG.

As shown in FIG. 3, the liquid trap 40 is connected to a gas reflux path L6 located on the gas-liquid separator 30 side via an inlet-side opening 43, and is also located on the ozone generator 10 side. It is comprised by the container 41 connected to L6 through the exit side opening part 44, The trap chamber 42 is provided in the inside. The trap chamber 42 is configured by a space having a cross-sectional area larger than the cross-sectional area of the gas recirculation path L6, and has a storage part 42a for storing ozone water 100 as a dew condensation liquid in the lower part thereof.

The droplet 101 of the ozone water 100 as the dew condensation liquid generated in the gas recirculation path L6 located on the gas-liquid separator 30 side is pushed out by the residual gas flowing through the gas recirculation path L6, so that the residual gas and the inlet side The liquid flows into the trap chamber 42 of the liquid trap 40 through the opening 43. The droplet 101 that has flowed into the trap chamber 42 falls inside the trap chamber 42, and is received and stored by a storage portion 42 a provided in the lower portion of the trap chamber 42.

On the other hand, the residual gas that has flowed into the trap chamber 42 flows through the trap chamber 42 and flows out through the outlet opening 44 to the gas reflux path L6 located on the ozone generator 10 side. Here, the residual gas that has flowed out of the trap chamber 42 and has flowed into the gas recirculation path L6 located on the ozone generator 10 side has been removed after the ozone water 100 as the dew condensation liquid has been removed by the action of the liquid trap 40. Therefore, the droplet 101 described above is hardly included.

Therefore, by adopting the above configuration, the ozone water 100 as the dew condensation liquid is captured by the liquid trap 40, and therefore the ozone water 100 as the dew condensation liquid may flow into the ozone generator 10. It can be effectively prevented. Therefore, by using the ozone-containing liquid generating apparatus 1A in the present embodiment, performance deterioration and failure of the ozone generator 10 can be suppressed, and stable performance can be exhibited over a long period of time.

Moreover, since the liquid trap 40 described above can be realized with a very simple configuration in which the container 41 having the trap chamber 42 provided therein is installed in the middle of the gas reflux path L6, by adopting the above configuration, Ozone-containing liquid generation that can be manufactured at a lower cost and in a smaller size compared to the case where a separate desiccant is provided or a cooling means that actively cools residual gas is provided, and the running cost can be reduced. It can be a device.

In addition, by using the liquid trap 40 including the trap chamber 42 having a cross-sectional area larger than the cross-sectional area of the gas reflux path L6 as described above, the area in contact with the residual gas on the flow path wall also increases. Therefore, the generation of the dew condensation liquid is also promoted, and more water vapor is removed from the residual gas. Therefore, by adopting the above configuration, it is possible to suppress the performance deterioration and failure of the ozone generator 10 in this respect as well. In order to enhance the effect, it is preferable to increase the length of the trap chamber 42 along the flow direction of the residual gas, but it is not necessary to completely remove water vapor from the residual gas. The length may be such that water vapor can be removed to such an extent that no adverse effects occur.

As described above, by adopting the configuration as in the present embodiment, it is possible to prevent the deterioration of the performance and the occurrence of failure, can be manufactured at a low cost and in a small size, and can further reduce the running cost. It can be set as the liquid production | generation apparatus 1A.

FIG. 4 is a schematic cross-sectional view showing another configuration example of the liquid trap shown in FIG. Next, another configuration example of the liquid trap 40 will be described with reference to FIG.

As shown in FIG. 4, in this configuration example, the end of the gas reflux path L6 located on the ozone generator 10 side on the liquid trap 40 side is provided so as to protrude into the trap chamber 42, Thereby, the outlet side opening 44 of the liquid trap 40 is disposed inside the trap chamber 42 rather than the inner wall surface of the container 41 as a flow path wall.

If comprised in this way, since the exit side opening part 44 can be kept away from the inner wall surface of the container 41, compared with the case where it is set as the liquid trap shown in FIG. 3 mentioned above, the ozone water 100 as a dew condensation liquid is ozone. It is possible to more reliably prevent the gas from flowing into the gas recirculation path L6 located on the generator 10 side. Therefore, when the said structure is employ | adopted, it can prevent more effectively that the ozone generator 10 will perform performance degradation and a failure.

3 and 4 described above both increase the capacity of the reservoir 42a provided in the trap chamber 42, so that the ozone water 100 as the dew condensation liquid is generated as an ozone-containing liquid. The apparatus 1A is configured to evaporate naturally when the apparatus 1A is not operating, but may be configured to return the ozone water 100 as the condensed liquid captured by the liquid trap 40 to the gas-liquid separator 30. .

Specifically, as shown in FIGS. 3 and 4, the inlet side opening 43 provided in the container 41 is positioned lower than the outlet side opening 44 provided in the container 41 while the liquid trap 40 is horizontally disposed. If the water level of the ozone water 100 as the dew condensation liquid rises, it flows from the inlet side opening 43 into the gas reflux path L6 located on the gas-liquid separator 30 side. Since it is collected by the gas-liquid separator 30, it is possible to prevent the ozone water 100 as the dew condensation liquid from flowing out from the outlet side opening 44.

Further, the liquid trap 40 having the configuration shown in FIGS. 3 and 4 is tilted so that the inlet-side opening 43 is positioned lower than the outlet-side opening 44, or is erected along the vertical direction. It is good also as arranging vertically so that it may become.

(Embodiment 2)
FIG. 5 is a diagram showing a schematic configuration of the ozone-containing liquid generation apparatus according to Embodiment 2 of the present invention, and FIG. 6 is a schematic cross-sectional view in the vicinity of the liquid trap shown in FIG. Hereinafter, with reference to these FIG. 5 and FIG. 6, the schematic structure of the ozone containing liquid production | generation apparatus 1B in this Embodiment and the detail of the liquid trap 40 are demonstrated.

As shown in FIG. 5, in the ozone-containing liquid generating apparatus 1B according to the present embodiment, the liquid trap 40 is provided at the end of the gas reflux path L6 on the gas-liquid separator 30 side. In the point provided integrally, it differs from the ozone containing liquid production | generation apparatus 1A in Embodiment 1 mentioned above.

Specifically, as shown in FIG. 6, in the ozone-containing liquid generating apparatus 1 </ b> B, the container 41 of the liquid trap 40 is integrally provided on the upper part of the container 31 of the gas-liquid separator 30. The trap chamber 42 and the space inside the gas-liquid separator 30 are partitioned by the partition wall 50 positioned between the liquid trap 40 and the gas-liquid separator 30. A through hole that communicates the trap chamber 42 and the space inside the gas-liquid separator 30 is provided at a predetermined position of the partition wall 50, and an inlet side opening 43 of the liquid trap 40 is configured by the through hole. ing.

Further, in the ozone-containing liquid generating apparatus 1B in the present embodiment, the end of the gas reflux path L6 on the liquid trap 40 side protrudes into the trap chamber 42 as in the case of FIG. 4 described above. As a result, the outlet side opening 44 of the liquid trap 40 is disposed inside the trap chamber 42 rather than the inner wall surface of the container 41 serving as a flow path wall.

Here, the residual gas flows from the gas-liquid separator 30 into the trap chamber 42 through the inlet-side opening 43, whereby the droplet 101 of the ozone water 100 as the dew condensation liquid generated on the flow path wall of the container 41. Falls inside the trap chamber 42, is received by the storage portion 42 a provided in the lower portion of the trap chamber 42, and then returned to the gas-liquid separator 30 through the inlet-side opening 43.

On the other hand, the residual gas that has flowed into the trap chamber 42 flows through the trap chamber 42 and flows out to the gas reflux path L6 via the outlet side opening 44. Here, the residual gas flowing into the gas recirculation path L6 by flowing out from the trap chamber 42 is after the ozone water 100 as the dew condensation liquid is removed by the action of the liquid trap 40. The droplet 101 is hardly contained.

Therefore, even in such a configuration, the same effect as that described in the first embodiment can be obtained. Furthermore, by adopting the above configuration, it is possible to obtain an effect that the ozone water 100 as the condensed liquid captured by the liquid trap 40 can be easily configured to be collected by the gas-liquid separator 30. In addition, the number of parts can be reduced and the manufacturing cost can be reduced.

In the following, the ozone-containing liquid generating apparatus 1B in the present embodiment described above and an ozone-containing liquid generating apparatus having a different configuration from this are actually manufactured as examples and comparative examples, respectively, and their performance over time. A verification test that verifies the change in the above will be described. In addition, the ozone containing liquid production | generation apparatus which concerns on a comparative example is the ozone containing liquid production | generation apparatus 1B in this Embodiment mentioned above, without providing the liquid trap 40, the gas reflux path L6 is the space inside the gas-liquid separator 30. It is the thing of the structure connected directly to.

In the verification test, the ozone-containing liquid generating device according to the example and the comparative example is intermittently repeatedly operated, and when the number of aging times reaches a predetermined number (0 times, 10000 times, 20000 times), from the discharge port. The change in performance over time was confirmed by measuring the ozone concentration of the discharged ozone water.

FIG. 7 is a graph showing a change in performance over time of the ozone-containing liquid generating apparatus according to the example and the comparative example. In FIG. 7, the horizontal axis represents the number of aging (times), and the vertical axis represents the ozone concentration (mg / L).

As shown in FIG. 7, it was confirmed that the ozone-containing liquid generating apparatuses according to the example and the comparative example, which had the same performance in the initial stage, differed in performance as the number of aging was increased.

Specifically, the ozone concentration of ozone water discharged from the ozone-containing liquid generating apparatus according to the comparative example was about 0.8 mg / L in the initial stage, but about 0.55 mg at the time when the number of aging times was 10,000. / L, and further decreases to about 0.5 mg / L at the time of 20,000 times of aging. On the other hand, the ozone concentration of the ozone water discharged from the ozone-containing liquid generating apparatus according to the example was about 0.8 mg / L at the initial stage, but at the time of 10000 times and 20000 times. In any case, it is reduced only to about 0.7 mg / L.

As described above, the reason for the difference in the change in performance over time in the ozone-containing liquid generating apparatus according to the example and the comparative example is that the liquid trap is uniquely provided in the ozone-containing liquid generating apparatus according to the example. Therefore, it is considered that the liquid trap can suppress the ozone water as the dew condensation liquid generated in the gas reflux path from flowing into the ozone generator.

Therefore, from the results of the above verification tests, it was confirmed that the present invention can effectively prevent performance degradation and failure.

FIG. 8 is a schematic cross-sectional view of the vicinity of the liquid trap of the ozone-containing liquid generating apparatus according to the modification based on this embodiment, and FIG. 9 is a top view of the bottom surface of the trap chamber of the liquid trap shown in FIG. FIG. Hereinafter, with reference to these FIG. 8 and FIG. 9, the ozone containing liquid production | generation apparatus which concerns on this modification is demonstrated.

As shown in FIG. 8, the ozone-containing liquid generating apparatus according to the present modification is the ozone-containing liquid generating in the present embodiment described above in that the gas-liquid separator 30 and the liquid trap 40 are integrally configured. It is common with the apparatus 1B. On the other hand, the ozone-containing liquid generating apparatus according to this modification is different from the ozone-containing liquid generating apparatus 1B in the present embodiment described above in the specific structure near the portion where the liquid trap 40 is provided.

More specifically, in the ozone-containing liquid generating apparatus according to this modification, the integrated gas-liquid separator 30 and the liquid trap 40 include a first container member having an upper surface opening formed of a container 31, and a partition wall 50. 3 and a second container member having a lower surface opening made of the container 41. The first container member, the partition member and the second container member are arranged in this order from the bottom to the top. It is formed by being laminated.

Thereby, the gas-liquid separation chamber which is the space inside the gas-liquid separator 30 is defined by the container 31 and the partition wall 50. Further, the trap chamber 42 that is the space inside the liquid trap 40 is defined by the partition wall 50 and the container 41, and in particular, the bottom surface of the trap chamber 42 is defined by the upper surface of the partition wall 50. The gas-liquid separation chamber and the trap chamber 42 are hermetically sealed to the outside between the first container member and the partition member and between the partition member and the second container member. Thus, a seal member such as an O-ring is appropriately interposed.

Therefore, with this configuration, the liquid trap 40 is provided integrally with the gas-liquid separator 30 at a position immediately above the gas-liquid separator 30, and these can be integrated with a simple configuration. It becomes possible. Therefore, the assembling work at the time of manufacture is facilitated, and the effect of further reducing the manufacturing cost can be obtained.

The entrance side opening 43 is provided in the predetermined position of the partition 50 by providing a through-hole. The inlet-side opening 43 corresponds to the gas reflux path L6 located on the gas-liquid separator 30 side when viewed from the liquid trap 40.

Here, as shown in FIGS. 8 and 9, in the ozone-containing liquid generating apparatus according to this modification, the upper surface of the partition wall 50, which is the bottom surface of the trap chamber 42, is located at the above-described inlet-side opening 43. It is comprised by the inclined surface 51 which inclines toward the part to do. By configuring in this way, the droplet 101 of the ozone water 100 as the condensed liquid captured by the liquid trap 40 is collected in the inlet-side opening 43 through the inclined surface 51. The ozone water 100 can be efficiently recovered by the gas-liquid separator 30. 8 and 9, the direction of the flow of the ozone water 100 that flows along the inclined surface 51 is schematically represented by broken-line arrows.

Further, as shown in FIG. 8, in the ozone-containing liquid generating apparatus according to this modification, at the connection end to the liquid trap 40 of the gas reflux path L6 located on the ozone generator 10 side when viewed from the liquid trap 40. A certain outlet side opening 44 is arranged at a position that is unevenly distributed from the position directly above the inlet side opening 43 described above. By configuring in this way, the size of the trap chamber 42 along the horizontal direction can be increased, so that a large size of the bottom surface constituted by the inclined surface 51 of the trap chamber 42 described above is ensured. Thus, the function of capturing the ozone water 100 with the liquid trap 40 and collecting it with the gas-liquid separator 30 is further enhanced.

Further, as shown in FIG. 8, in the ozone-containing liquid generating apparatus according to this modification, the gas introduction path L4, the intake port 4 provided in the gas introduction path L4, and the check valve as the flow restriction means 5 are disposed at positions immediately above the inlet side opening 43 described above. With this configuration, the gas introduction path L4 can be further integrated with the integrated gas-liquid separator 30 and liquid trap 40, and the physique can be reduced after integration. Therefore, the apparatus configuration can be further simplified and downsized.

In the first and second embodiments of the present invention described above and the modifications thereof, the venturi-type gas-liquid mixer 20 is used as the ozone-containing liquid generating means, whereby the self-priming of the gas-liquid mixer 20 is performed. Although the case where the raw material gas is supplied to the gas-liquid mixer 20 by the action is illustrated, it is possible to use a gas-liquid mixing means having no self-priming action as the ozone-containing liquid generating means. In that case, a means for forcibly pumping a gas such as a pump may be provided in the gas introduction path L4, the ozone transport path L5, and the gas reflux path L6 as necessary.

Further, in the first and second embodiments of the present invention and the modifications thereof, the case where the gas-liquid separator 30 provided with the container is provided as the gas-liquid separating means is exemplified, but the gas-liquid separation is possible. Any gas-liquid separating means can be used as the gas-liquid separating means. For example, a part of the piping connecting the ozone-containing liquid conveyance path L2 and the ozone-containing liquid lead-out path L3 is expanded and the gas-liquid separating means is used. It is also possible.

Further, in the above-described first and second embodiments of the present invention and the modifications thereof, the case where the external air is sucked as the raw material gas has been exemplified. However, the inlet of the gas introduction path L4 to the oxygen cylinder or the like is exemplified. 4 may be connected and used.

Moreover, in Embodiment 1 and 2 of this invention mentioned above and its modification, this invention is made into ozone containing liquid production |

generation apparatus

1A, 1B which can be attached as a washing | cleaning unit to normal water supply equipment by unitizing. However, the present invention may be applied to a cleaning device configured to be integrated with a normal water supply facility in advance. Furthermore, the present invention may be applied to an ozone-containing liquid generating device that can be attached as a cleaning unit to other liquid supply equipment other than normal water supply equipment, or other liquid supply other than normal water supply equipment The present invention may be applied to a cleaning device configured to be integrated with equipment.

Here, as the above-described cleaning device, it is used for cleaning water facilities provided in kitchens, bathrooms, toilets, washrooms, etc., pipes attached to dwelling units, factories, etc., or mechanical equipment installed in factories, etc. Cleaning equipment, parts cleaning equipment as production equipment installed in factories, cleaning equipment for various products and products including foodstuffs, various cleaning equipment used in medical facilities, hand washers and face washers, etc. And various cleaning devices for the purpose of sterilization, deodorization, bleaching and the like that are symmetrical about the floor or wall surface of the building.

Thus, the present invention can be applied to various cleaning units and cleaning devices without departing from the spirit of the present invention.

The above-described embodiments and modifications thereof disclosed above are examples in all respects and are not restrictive. The technical scope of the present invention is defined by the scope of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

1A, 1B Ozone-containing liquid generating device, 2 liquid inlet, 3 outlet, 4 air inlet, 5 check valve, 10 ozone generator, 20 gas-liquid mixer, 21 large-diameter channel, 22 small-diameter channel, 23, conical channel section, 24 gas introduction passage section, 30 gas-liquid separator, 31 container (first container member), 40 liquid trap, 41 container (second container member), 42 trap chamber, 42a storage section, 43 Inlet side opening, 44 Outlet side opening, 50 partition wall (partition member), 51 inclined surface, 100 ozone water, 101 droplet, L1 liquid introduction path, L2 ozone-containing liquid transport path, L3 ozone-containing liquid lead-out path, L4 Gas introduction path, L5 ozone transport path, L6 gas reflux path.

Claims

Ozone generating means for generating ozone using a gas containing oxygen;
Ozone-containing liquid generating means for generating an ozone-containing liquid by containing ozone generated by the ozone generating means in a liquid;
A gas introduction path for introducing a gas containing oxygen into the ozone generating means;
A liquid introduction path for introducing liquid into the ozone-containing liquid generation means;
A gas-liquid separating means for temporarily storing the ozone-containing liquid generated by the ozone-containing liquid generating means and gas-liquid separating the ozone-containing liquid;
An ozone-containing liquid lead-out path for leading out the ozone-containing liquid after being gas-liquid separated by the gas-liquid separation means;
A gas reflux path for refluxing the gas containing ozone separated from the ozone-containing liquid by the gas-liquid separation means to the ozone generation means;
An ozone-containing liquid generation apparatus comprising a liquid trap provided on the gas reflux path.
The ozone-containing liquid generating apparatus according to claim 1, wherein the liquid trap has a trap chamber having a cross-sectional area larger than a cross-sectional area of the gas reflux path.
A connection end of the gas recirculation path located on the ozone generating means side when viewed from the liquid trap to the liquid trap protrudes toward the inside of the trap chamber from an inner wall surface of the liquid trap defining the trap chamber. The ozone-containing liquid production | generation apparatus of Claim 2 provided so that it may do.
The ozone-containing liquid generating apparatus according to any one of claims 1 to 3, wherein the liquid captured by the liquid trap is configured to be collected by the gas-liquid separation means.
The ozone-containing liquid generating apparatus according to any one of claims 1 to 4, wherein the liquid trap is provided integrally with the gas-liquid separating means.
The liquid trap has a trap chamber having a cross-sectional area larger than the cross-sectional area of the gas reflux path, and is provided integrally with the gas-liquid separation means so as to be located immediately above the gas-liquid separation means,
The gas-liquid separation means has a gas-liquid separation chamber for temporarily storing the ozone-containing liquid and gas-liquid separation thereof;
The liquid in the gas reflux path in which the bottom surface of the trap chamber is located on the gas-liquid separation means side when viewed from the liquid trap so that the liquid captured by the liquid trap is recovered by the gas-liquid separation means The ozone-containing liquid production | generation apparatus of Claim 1 which has the inclination shape inclined toward the connection end side with respect to a trap.
The gas-liquid separation chamber and the trap chamber are partitioned by a partition wall formed with an opening as the gas reflux path located on the gas-liquid separation means side when viewed from the liquid trap,
The gas-liquid separation means and the liquid trap integrated with each other include a first container member having an upper surface opening that defines the gas-liquid separation chamber, a partition member that forms the partition wall, and a lower surface opening that defines the trap chamber. The ozone-containing liquid according to claim 6, comprising: a second container member, wherein the first container member, the partition member, and the second container member are laminated in this order from the bottom to the top. Generator.
The gas introduction path enables an air inlet for introducing a gas containing oxygen, and a gas containing oxygen only in a direction from the side where the air inlet is located toward the side where the ozone generating means is located. Distribution restriction means,
A connection end to the liquid trap of the gas reflux path located on the ozone generating means side when viewed from the liquid trap is provided at a position unevenly distributed from a position immediately above the opening,
The ozone-containing liquid generating apparatus according to claim 7, wherein the flow restriction means is provided at a position immediately above the opening so as to communicate with the trap chamber.
A connection end of the gas recirculation path located on the ozone generating means side when viewed from the liquid trap to the liquid trap protrudes toward the inside of the trap chamber from an inner wall surface of the liquid trap defining the trap chamber. The ozone-containing liquid production | generation apparatus in any one of Claim 6 to 8 provided so that it may do.
The ozone-containing liquid generating device according to any one of claims 1 to 9, wherein the ozone-containing liquid generating means is constituted by a gas-liquid mixing means for containing ozone in a liquid using a venturi effect.
A cleaning apparatus comprising the ozone-containing liquid generating apparatus according to any one of claims 1 to 10.