JPH10230229A - Ozone mixing device and washing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a micronizing ratio of a gaseous ozone by spraying a liq. to be mixed into an ozone mixing chamber as revolving flow and feeding the ozone into the ozone mixing chamber. SOLUTION: The gaseous ozone formed at an ozone generator is fed into the mixing chamber 90 from an ozone spraying part 94 of the mixing chamber 40 through a pipeline 64. Besides, water is fed and sprayed to a water spraying part 92 by interposing a discharge hose 32 and the revolving flow is formed in the mixing chamber 90 with a revolving flow guide 88. Therefore, in the mixing chamber 90, the ozone is agitated by the revolving flow of water and micronized and dissolved in water. An ozone water generated at the mixing chamber 90 is fed to an ozone water spraying nozzle by interposing an extension hose 42 and sprayed. In this way, the gaseous ozone is efficiently micronized and dissolved in water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ozone mixing apparatus for mixing ozone into a liquid to be mixed, and a cleaning apparatus which can be used for both injection of an ozone mixed liquid and injection of a non-ozone mixed liquid.

[0002]

2. Description of the Related Art Ozone water has a disinfecting, disinfecting, and deodorizing effect, and is used, for example, for cleaning equipment such as food factories, hospitals, sewage treatment plants, toilets, and baths, floors, gutters, and the like. . Therefore, there is a cleaning device that can be used for both cleaning of the target with ozone water and cleaning of the target with high-pressure water unrelated to sterilization or the like.

FIG. 6 is a block diagram of a conventional cleaning device 128 which can be used for both water-only injection and ozone water injection, and FIG. 7 is a detailed view of the mixing device 130 of FIG. The same parts as those of the embodiment of the invention described later are indicated by the same reference numerals,
The description will be omitted, and differences will be described. Ozone hose 13
2 guides the ozone generated by the ozone generator 56 to the mixing device 130. In order to prevent the water 22 from flowing backward from the mixing device 130 to the ozone generator 56, two check valves 134 and 136 are provided. The start switch 137 is the start switch 24
And the operation of the ozone generator 56 is controlled. The mixing device 130 includes a venturi 138, a needle 140 screwed to the venturi 138, and a hose fitting 142 screwed to the upper end of the needle 140. Check valve 136
Is housed in the space inside the needle 140 closed by the hose fitting 142, and the ball 144 and the ball 144 are connected to the hose fitting 14.
And a compression coil spring 146 that presses against the second valve seat. The connection joint 148 is attached with the end of the discharge hose 32,
A nut 150 couples to one end of the venturi 138.
The nut 150 is fitted with the end of the extension hose 42 and the nut 1
The other end of the venturi 138 is connected by 54. Hose bands 156, 158, 160 connect discharge hose 32, extension hose 42, and ozone hose 132 to connection joints 148, 152, respectively.
And the hose fitting 142.

In the cleaning device 128, when only the water 22 is sprayed, the spray nozzle 46 is switched to the high-pressure spray pattern (the spray pattern of the spray nozzle 46 is switched by adjusting the screwing position of the spray nozzle 46). , Activation switch 13
7 is turned off, and the ozone generator 56 is stopped. The pressure water from the high-pressure pump 28 is supplied to the mixing device 130.
It is led to the nozzle gun 44 without mixing ozone,
It is injected from the injection nozzle 46.

When injecting ozone water, the injection nozzle 46
To the low-pressure injection pattern and a start switch.
137 is turned on, and the ozone generator 56 is operated. As the water 22 pumped from the high-pressure pump 28 passes through the venturi section of the venturi 138 of the mixing device 130,
A negative pressure is generated, and the ozone from the ozone generator 56 is sucked out and mixed. In this way, the ozone water is sent to the nozzle gun 44 and is ejected from the ejection nozzle 46.

[0006]

The problems of the conventional cleaning device 128 are as follows. (A) Ozone water is generated by mixing ozone into the water 22 by suction due to the negative pressure of the venturi 138 of the mixing device 130, but the dissolution rate of ozone gas is low,
The rate of fineness of ozone gas is also poor. (B) The trouble of switching between the cleaning operation using ozone water and the cleaning operation in which only the water 22 is injected at high pressure is complicated. That is, the switching of the injection pattern of the injection nozzle 46 and the ON / OFF operation of the start switch 137 are required. (C) When the water 22 enters the ozone generator 56, the water 22 is broken. Therefore, the check valves 134 and 136 are provided in the ozone hose 132 in a double manner. When it is caught in the valve elements of the check valves 134 and 136, the water 22 may instantaneously enter the ozone generator 56 and destroy the ozone generator 56. (D) Since the ozone concentration of ozone water which is considered to have a sterilizing effect is 0.1 ppm or more, it is necessary to secure the ozone concentration of ozone water injected from the injection nozzle 46.
However, about 60 to 80% of the ozone mixed in the water 22 in the mixing device 130 disappears before reaching the injection nozzle 46. In particular, the change and bending of the passage diameter of the passage in the nozzle gun 44 cause ozone disappearance.

An object of the present invention is to provide an ozone mixing device and a cleaning device which overcome the above problems.

[0008]

The ozone mixing device (40) of the present invention has the following. A swirling flow generating unit (92) for injecting the mixed liquid (22) into the mixing chamber (90) with a swirling flow, and the ozone mixing unit (90) provided inside the swirling flow generating unit (92)
Ozone supply unit (94) to supply inside

The swirling flow of the mixed liquid (22) is generated in the mixing chamber (90) by the swirling flow of the mixed liquid (22) from the swirling flow generating section (92), and the ozone is supplied into the swirling flow. Since ozone is supplied from the section (94), the dissolution rate of ozone in the ozone miniaturization rate mixed liquid (22) can be increased.

The cleaning device (10) of the present invention has the following. Ozone mixing device (40) Ozone generator that generates ozone (56) Ozone generated by the ozone generator (56) is supplied to the ozone supply unit (94)
Nozzles (46, 5) that eject liquid guided from the mixing chamber (90)
0) Pressure sensor (70) that detects the pressure of the mixing chamber (90) Based on the pressure detected by the pressure sensor (70), the ozone generator (56) is stopped at high pressure, and the ozone generator (56) is turned off at low pressure. Controller to be operated (72) Nozzle (46, 50) that switches between low-pressure injection and high-pressure injection and injects liquid from mixing chamber (90)

The injection of the ozone liquid from the nozzles (46, 50) is performed at a lower pressure than when the liquid (22) is injected only from the nozzles (46, 50), and the injection pressure of the nozzles (46, 50) is mixed. This is reflected in the pressure of the chamber (90). Thus, the ozone generator (56)
Start and stop can be switched by (72), nozzle (46, 50)
It operates only when injecting more ozone liquid to generate ozone.

Another cleaning apparatus (10) of the present invention further comprises:
Has the following: The ozone storage chamber (6) provided in the middle of the ozone passage (60, 64)
2) A first check valve (68) for preventing a backflow from the ozone supply unit (94) to the ozone storage chamber (62) A first check valve for preventing a backflow from the ozone storage chamber (62) to the ozone generator (56) 2 check valve (66) Relief valve (80) that opens when the pressure in the ozone storage chamber (62) exceeds a predetermined value

Ozone gas from the ozone generator (56) is stored in an ozone storage chamber (62). Since the relief valve (80) does not open unless the pressure in the ozone storage chamber (62) reaches a predetermined value or more, the ozone gas in the ozone storage chamber (62) is released from the first check valve.
It is led to the ozone supply unit (94) via (68). Should a liquid (2
2) When the foreign matter in is caught in the first check valve (68),
The liquid (22) enters the ozone storage chamber (62) via the first check valve (68). Since the second check valve (66) remains closed,
With the entry of the contaminated liquid (22) into the ozone storage chamber (62), the pressure of the ozone storage chamber (62) increases, the relief valve (80) opens, and the contaminated liquid in the ozone storage chamber (62) is opened. (22) is a relief valve (80)
Is discharged through.

The cleaning apparatus (10) of the present invention has the following. Nozzle gun (44) including nozzle (46) for ejecting non-ozone-mixed liquid and trigger (48) for controlling passage of non-ozone-mixed liquid (22) to nozzle (46) for non-ozone-mixed liquid Nozzle gun (44) Nozzle (50) for ejecting ozone-mixed liquid mounted on the nozzle Switching valve (54) for switching the pressure-fed liquid to nozzle gun (44) or nozzle for ejecting ozone-mixed liquid (50)

The ozone-mixed liquid is sent directly to the ozone-mixed liquid injection nozzle (50) without passing through a complicated passage in the nozzle gun (44). The residual ratio of ozone in the liquid can be improved.

Another cleaning device (10) of the present invention has the following. Ozone mixing device (40) Nozzle gun including a nozzle (46) for ejecting non-ozone-mixed liquid and a trigger (48) for controlling passage of the non-ozone-mixed liquid (22) to the nozzle (46) for non-ozone-mixed liquid ( 44) Nozzle (50) for ejecting ozone-mixed liquid attached to nozzle gun (44) Switching valve (54) for switching the liquid pumped from mixing chamber (90) to nozzle gun (44) or nozzle for injecting ozone-mixed liquid (50) )

Another cleaning device (10) of the present invention has the following in addition to the above-described cleaning device (10). Nozzle gun (44) including nozzle (46) for ejecting non-ozone-mixed liquid and trigger (48) for controlling passage of non-ozone-mixed liquid (22) to nozzle (46) for non-ozone-mixed liquid Nozzle gun (44) Nozzle (50) for ejecting ozone-mixed liquid attached to the nozzle Switching valve (54) for switching the liquid pressure-fed from the mixing chamber (90) to the nozzle gun (44) or nozzle for ejecting ozone-mixed liquid (50)

[0018]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram of the cleaning device 10. The water tank 12 has a ball tap 14 and a water tap 16
Water 22 is supplied to the ball tap 14 via the water supply hose 18, and is introduced into the water supply tank 12 from the ball tap 14. The start switch 24 is connected to an AC power supply and controls the supply of power. The motor 26 is supplied with electric power from the start switch 24, and drives the high-pressure pump 28. The high-pressure pump 28 sucks the water 22 in the water supply tank 12 through the water suction hose 30,
To discharge. The pressure regulating valve 34 regulates the discharge pressure of the high-pressure pump 28, and spill water is supplied from the pressure regulating valve 34 to the water supply tank 12 through a spill water hose 36.
Returned to The pressure gauge 38 measures the discharge pressure of the high-pressure pump 28.

The mixing device 40 guides the water 22 guided from the discharge hose 32 to the extension hose 42. Portable nozzle gun
44 is a trigger that controls the supply of water 22 to the injection nozzle 46 by opening and closing the injection nozzle 46 at the tip and the passage in the nozzle gun 44.
And 48. The ozone water injection nozzle 50 is attached to the tip of the nozzle gun 44 so as to surround the injection nozzle 46 on the inside, and has an injection hole having a diameter larger than the injection hole diameter of the injection nozzle 46 and opens in front of the injection nozzle 46. Attached hose 52
Extends outside the nozzle gun 44 and is connected to the ozone water injection nozzle 50. A manually operated three-way cock 54 is attached to the base end of the nozzle gun 44 and connects the extension hose 42 to the nozzle gun.
Connect to either 44 or attached hose 52.

The ozone generator 56 has an ozone generation amount adjusted by an ozone generation amount adjustment dial 58. The conduit 60 guides the ozone generated in the ozone generator 56 to the upper part of the chamber 62. One end of the conduit 64 faces the drain port 74 below the chamber 62, and the other end is connected to the mixing device 40. The check valves 66 and 68 are provided in the pipeline 60 and the pipeline 64, respectively, and prevent the backflow from the mixing device 40 toward the ozone generator 56. The pressure sensor 70 detects the pressure of the pipe 64 between the mixing device 40 and the check valve 68. Power Relay 72
Controls the supply of electric power from the start switch 24 to the ozone generator 56 based on the detection pressure of the pressure sensor 70. The drain passage 76 connects the drain port 74 of the chamber 62 to the spill hose 36.
The drain cock 78 and the relief valve 80 are connected to each other in parallel and disposed in the drain passage 76.

FIG. 2 is a detailed structural view of the mixing device 40. The swirling flow guide 88 is fitted into the body 84 from above, and the gas nozzle 86 is screwed into the upper portion of the body 84, and presses the swirling flow guide 88 at the lower end against the step of the body 84. The mixing chamber 90 is formed in the body 84 below the swirling flow guide 88. The water injection unit 92 is formed at the center of the lower end of the swirling flow guide 88, and the ozone injection unit 94 is
And protrudes into the mixing chamber 90. The guide passage 96 is formed as a gap between the gas nozzle 86 and the swirling flow guide 88, and the cylindrical portion of the gas nozzle 86 and the swirling flow guide 88 are formed.
And a tapered space between the conical portion of the gas nozzle 86 and the bottom surface of the conical bottom of the swirling flow guide 88. The O-rings 98, 100, and 102 are provided between the stepped portion of the body 84 and the flange portion of the swirling flow guide 88, between the inner peripheral portion of the body 84 and the outer peripheral portion of the gas nozzle 86, and between the upper surface of the body 84 and the swirling flow. A seal is provided between the guide 88 and the upper flange.
After the end of the discharge hose 32 is attached to the connection joint 104, the end of the discharge hose 32 is tightened by the hose band 106, and further connected to the port at the middle part of the body 84 by the nut 108. The connection fitting 110 is an extension hose 42
After the end of the body 84 is attached, it is tightened by the hose band 112 and connected to the port at the lower end of the body 84 by the nut 114. The conduit 64 is mounted on the upper end of the gas nozzle 86 and then tightened by the hose band 116.

FIG. 3 is a diagram showing the flow of the fluid by disassembling the gas nozzle 86 and the swirling flow guide 88. A is a gas nozzle
Ozone gas flow injected from the ozone injection section 94 of 86,
B is a flow of the water 22 supplied from the inlet 118 of the swirling flow guide 88 into the swirling flow guide 88, C is a swirling flow of the water 22 injected from the water injection unit 92 of the swirling flow guide 88 into the mixing chamber 90, D is A
3 shows fine bubbles generated by stirring the ozone water injected by C.

FIG. 4 shows the flow of the water 22 in the guide passage 96 of the swirling flow guide 88. The inflow port 118 is formed in the tangential direction of the guide passage 96, and the water 22 flows into the guide passage 96 in the swirling flow guide 88 in the tangential direction as shown in B, thereby circling the guide passage 96, The water is injected from the water injection unit 92. As a result of the circulation in the guide passage 96, the water 22
After being injected from 92, a swirling flow shown in FIG. 3C is formed in the mixing chamber 90 (FIG. 1).

The operation of the cleaning device 10 will be described. FIG.
Indicates the detection pressure of the pressure sensor 70 and the operating state of the ozone generator 56 in each state of the cleaning device 10. Pressure sensor
When the detected pressure of 70 is in the region below the dashed line in FIG. 5, the power relay 72 is turned on, the ozone generator 56 is operated, and ozone is generated. Also, the pressure sensor 70
Is in the region above the one-dot chain line in FIG. 5, the power relay 72 is turned off and the ozone generator
56 stops and ozone generation is stopped.

When the high-pressure pump 28 is started, the pressure regulating valve 34 is turned off so that the high-pressure pump 28 can be started smoothly.
And the detection pressure of the pressure sensor 70 is sufficiently low. After the start of the high-pressure pump 28, as the pressure regulating valve 34 is operated, the discharge pressure of the high-pressure pump 28 rises to a sufficiently large value regulated by the pressure regulating valve 34.

When injecting ozone water, the three-way cock 54
To the first position and connect the extension hose 42 to the attached hose 52
Connect to Since the diameter of the injection hole of the ozone water injection nozzle 50 is large, the injection pressure is low, and the detection pressure of the pressure sensor 70 is a value below the one-dot chain line in FIG. As a result, the power relay 72 is turned on, the ozone generator 56 is activated, and the ozone generator
The ozone produced by 56 passes through line 60, chamber 62, and line
The mixture is supplied to the ozone injection unit 94 of the mixing device 40 via the mixer 64, and is supplied from the ozone injection unit 94 into the mixing chamber 90. In the mixing chamber 90, the swirl flow is generated by the injection of the water 22 from the water injection unit 92, so that the ozone from the ozone injection unit 94 is stirred by the swirl flow of the water 22 in the mixing chamber 90,
It is finely divided and dissolved in water 22. The ozone water generated in the mixing chamber 90 is injected from the ozone water injection nozzle 50 via the extension hose 42, the three-way cock 54, and the attached hose 52. Unlike the passage in the nozzle gun 44, the attached hose 52 has a simple structure with a small diameter change portion and a small passage bent portion, so that the ozone disappearance can be suppressed accordingly.

When injecting only water 22 at high pressure, a three-way cock
Switch 54 to the second position and extend hose 42 with nozzle gun
Connect to 44. While the trigger 48 is closed, the detection pressure of the pressure sensor 70 increases to the pressure adjustment value of the pressure adjustment valve 34, and FIG.
Above the dashed line. As a result, the power relay 72 is turned off, the ozone generator 56 is stopped, and the generation of ozone is stopped. Next, when the trigger 48 is opened, the injection nozzle
The injection of water 22 from 46 is started. With the start of this injection, the pressure detected by the pressure sensor 70 decreases, but the injection nozzle 46
The injection hole diameter is smaller than that of the ozone water injection nozzle 50, and the detection pressure of the pressure sensor 70 decreases, but maintains the value above the one-dot chain line in FIG. 5, and the ozone generator 56 maintains the stopped state. I do. Thereby, the injection from the injection nozzle 46 of only the water 22 into which ozone is not mixed is performed.

When foreign matter in the water 22 is bitten by the check valve 68, the water 22 flows back through the pipe 64 and enters the lower part of the chamber 62. The check valve 66 has the worst throttling function against backflow, despite some malfunction, so the chamber 62
With the increase of the infiltrating liquid of the water 22 in the inside, the pressure in the chamber 62 reaches a predetermined value or more, the relief valve 80 is opened, and the water 22 that has entered the chamber 62 is supplied to the water supply tank 12 through the drain passage 76. And is prevented from entering the ozone generator 56.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a cleaning device 10.

FIG. 2 is a detailed structural diagram of a mixing device 40.

FIG. 3 is a diagram showing a flow of a fluid by disassembling a gas nozzle 86 and a swirling flow guide 88.

FIG. 4 is a diagram showing a flow of water 22 in a guide passage 96 of a swirling flow guide 88.

5 is a diagram showing a detection pressure of a pressure sensor 70 and an operation state of an ozone generator 56 in each state of the cleaning device 10. FIG.

FIG. 6 is a configuration diagram of a conventional cleaning device 128 that can be used for both water-only injection and ozone water injection.

FIG. 7 is a detailed view of the mixing device 130 of FIG.

[Explanation of symbols]

Reference Signs List 10 cleaning device 22 water (mixed liquid, liquid, non-ozone mixed liquid) 40 mixing device (ozone mixed device) 44 nozzle gun 46 injection nozzle (nozzle, nozzle for non-ozone mixed liquid injection) 48 trigger 50 ozone water injection nozzle (nozzle) , Ozone mixed liquid injection nozzle) 54 Three-way cock (switching valve) 56 Ozone generator 60 Pipe (ozone passage) 62 Chamber (ozone storage chamber) 64 Pipe (ozone passage) 66 Check valve (second check) Valve) 68 Check valve (first check valve) 70 Pressure sensor 72 Power relay (controller) 80 Relief valve 90 Mixing chamber 92 Water injection unit (Swirl flow generation unit) 94 Ozone injection unit (Ozone supply unit)

Claims (6)

[Claims] 1. A swirling flow generating unit (92) for injecting a mixed liquid (22) into a mixing chamber (90) by a swirling flow, and the swirling flow generating unit (92).
An ozone supply unit (94) provided inside of the device for supplying ozone into the mixing chamber (90). 2. The ozone mixing device (40) according to claim 1, an ozone generator (56) for generating ozone, ozone for guiding ozone generated by the ozone generator (56) to the ozone supply unit (94). Passages (60, 64), nozzles (4) for injecting liquid guided from the mixing chamber (90).
6,50), a pressure sensor (70) for detecting the pressure of the mixing chamber (90), the ozone generator (56) is stopped at high pressure based on the detected pressure of the pressure sensor (70), and A controller (72) for operating the ozone generator (56), and a nozzle (46, 46) that switches between low-pressure injection and high-pressure injection and injects liquid from the mixing chamber (90).
50). 3. An ozone storage chamber (62) provided in the middle of the ozone passage (60, 64), and a first reverse for preventing a backflow from the ozone supply section (94) to the ozone storage chamber (62). A stop valve (68), a second check valve (66) for preventing backflow from the ozone storage chamber (62) to the ozone generator (56), and the ozone storage chamber
A relief valve (80) that opens when the pressure of (62) exceeds a predetermined value,
The cleaning device according to claim 2, further comprising: 4. An ozone non-mixed liquid jet nozzle (46) and an ozone non-mixed liquid (2) supplied to the ozone non-mixed liquid jet nozzle (46).
A nozzle gun (4) having a trigger (48) for controlling the passage of
4), a nozzle (50) for ejecting an ozone-mixed liquid attached to the nozzle gun (44), and a liquid fed under pressure to the nozzle gun (4).
4) or a switching valve (54) for switching to the ozone-mixed liquid injection nozzle (50). 5. The ozone mixing device (40) according to claim 1, wherein the ozone non-mixing liquid jet nozzle (46) and the passage of the ozone non-mixing liquid (22) to the ozone non-mixing liquid jet nozzle (46). A nozzle (44) having a trigger (48) for controlling the nozzle gun, a nozzle (50) for injecting an ozone-mixed liquid attached to the nozzle gun (44), and a nozzle gun for supplying a liquid pressure-fed from the mixing chamber (90).
(44) A cleaning device comprising a switching valve (54) for switching to the ozone-mixed liquid injection nozzle (50). 6. An ozone non-mixed liquid jet nozzle (46) and an ozone non-mixed liquid (2) supplied to the ozone non-mixed liquid jet nozzle (46).
A nozzle gun (4) having a trigger (48) for controlling the passage of
4) a nozzle (50) for injecting an ozone-mixed liquid attached to the nozzle gun (44), and a liquid pressure-fed from the mixing chamber (90) to the nozzle gun (44) or the ozone-mixed liquid injection nozzle (50). The cleaning device according to claim 2 or 3, further comprising a switching valve (54) for switching to (i).