JP3680726B2 - Ozone water production equipment - Google Patents

Ozone water production equipment Download PDF

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Publication number
JP3680726B2
JP3680726B2 JP2000332283A JP2000332283A JP3680726B2 JP 3680726 B2 JP3680726 B2 JP 3680726B2 JP 2000332283 A JP2000332283 A JP 2000332283A JP 2000332283 A JP2000332283 A JP 2000332283A JP 3680726 B2 JP3680726 B2 JP 3680726B2
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Prior art keywords
ozone
water
pressure
nozzle
water supply
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JP2000332283A
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Japanese (ja)
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JP2002126481A (en
Inventor
利満 川口
秀人 田中
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トヨタ車体株式会社
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Description

[0001]
[Industrial application fields]
The present invention relates to an ozone water production apparatus.
[0002]
[Prior art]
In order to increase the supply amount of ozone water, conventionally, two ozone water production apparatuses a are connected in parallel as shown in FIG. The ozone water production apparatus a has a first nozzle and a second nozzle in series, and connects the raw water supply pipe b to the first nozzle, while the second nozzle branches from the raw water supply pipe b. An ozone supply line g that supplies ozone from an ozone generator f is connected to an aspirator e that connects a bypass line c that bypasses the first nozzle, and ozone water is dissolved in raw water to produce ozone water. Then, ozone water is supplied from the ozone water supply line h through the gas-liquid separator i, and the ozone water supply pipe is balanced with the water pressure of the ozone water supply line h in the bypass line c. It is provided with a pressure control valve j for controlling the water pressure in the passage h so as to maintain a set value. If two units are connected in parallel, the minimum ozone water supply amount is double that of the individual ozone water production apparatus a. For this reason, the flow rate switch k and the electromagnetic switching valve 1 are interposed in the raw water supply line b and the bypass line c, and one or two ozone water production apparatuses a are operated according to the amount of ozone water used. It was switched as follows.
[0003]
[Problems to be solved by the invention]
However, since two ozone water production apparatuses a are used, the overall configuration of the apparatus is increased in size and the manufacturing cost is increased.
The present invention has been made in view of the above, and an object thereof is to provide an inexpensive and small-sized ozone water production apparatus that can stably supply ozone water corresponding to the amount of use at a substantially constant concentration.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, an ozone water production apparatus according to claim 1 of the present invention includes an aspirator interposed in a raw water supply pipe, and an ozone supply pipe connected to the aspirator, thereby supplying ozone to the raw water. In the ozone water production apparatus for producing ozone water by dissolving the aspirator, the aspirator has a first nozzle and a second nozzle in series, and the raw water supply conduit is connected to the first nozzle, while the second nozzle is connected to the second nozzle. Is connected to a first bypass pipe that branches from the raw water supply pipe and bypasses the first nozzle, and the ozone water supply pipe is balanced with the water pressure of the ozone water supply pipe to the first bypass pipe. The pressure control valve for controlling the water pressure of the first bypass line and the flow rate sensor for detecting the amount of water flow of the first bypass line for the control of the amount of ozone generated, Downstream of the control valve A second bypass line that bypasses the flow sensor and the aspirator by branching from between the pressure control valve and the flow sensor of the first bypass line, The second bypass pipe is provided with a differential pressure regulating valve that opens when the front and rear differential pressure exceeds a set value.
[0005]
Further, the ozone water production apparatus according to claim 2 is configured to produce ozone water by interposing an aspirator in the raw water supply pipe and connecting the ozone supply pipe to the aspirator to dissolve ozone in the raw water. In the ozone water production apparatus, the aspirator has a first nozzle and a second nozzle in series, and the raw water supply pipe is connected to the first nozzle, while the second nozzle is branched from the raw water supply pipe. A first bypass pipe that bypasses the first nozzle is connected to the first bypass pipe so that the water pressure of the ozone water supply pipe maintains a set value in balance with the water pressure of the ozone water supply pipe. In addition, a first pressure control valve that controls the water pressure in the first bypass pipe and a flow rate sensor that detects the amount of water flow through the first bypass pipe for controlling the amount of ozone generated are provided downstream of the first pressure control valve. The flow sensor is located And a second bypass pipe that bypasses the aspirator in the raw water supply pipe, and the second pressure in which the operating pressure is set lower than that of the first pressure control valve. A control valve is interposed.
[0006]
[Operation and effect of the invention]
According to the ozone water production apparatus of claim 1, the pressure control valve of the first bypass line that is closed when the amount of ozone water used is zero is the water pressure of the ozone water supply line when ozone water is used. When the pressure drops to the set pressure, the valve is opened, and the valve opening is changed according to the water pressure, and the water pressure in the ozone water supply line is held at the set value. When the amount of ozone water used is small and the differential pressure before and after the differential pressure adjustment valve is smaller than the set value, the differential pressure adjustment valve is closed. For this reason, all the raw | natural water which came out of the pressure control valve flows into a 1st bypass line. Based on the flow rate detected by the flow rate sensor, the ozone generation amount of the ozone generator is controlled, and the production of ozone water is started. When the amount of ozone water used increases and the differential pressure before and after the differential pressure adjustment valve in the second bypass line exceeds the set value, the differential pressure adjustment valve opens.
[0007]
Therefore, when the amount of ozone water used increases and the amount of water flowing through the first bypass line increases, the ozone water producing apparatus according to claim 1 opens the differential pressure regulating valve to the second bypass line. Since raw water flows, the amount of water flowing to the flow sensor can be limited to below the rating. The flow rate sensor detects an increase in the amount of water, and the ozone water generated by the ozone generator increases and becomes highly concentrated. Can supply water. In addition, the relationship between the flow rate detected by the flow sensor and the total water amount has a substantially constant correlation regardless of the raw water pressure, so the ozone generation amount of the ozone generator is determined based on the detected water amount of the flow sensor. By controlling, ozone water having a substantially constant concentration can be produced. Furthermore, the ozone water production apparatus can be miniaturized and provided at low cost.
[0008]
According to the ozone water production apparatus of claim 2, when the amount of ozone water used is zero, the first and second pressure control valves respectively interposed in the first bypass line and the second bypass line. Is closed. When the amount of ozone water used is small, the decrease in the water pressure in the ozone water supply line is small, so the first pressure control valve with the high operating pressure is opened first, and the raw water is in the first bypass line. Flowing. Based on the flow rate detected by the flow sensor, the ozone generation amount of the ozone generator is controlled, and the production of ozone water is started. When the water pressure in the ozone water supply line decreases to the operating pressure of the second pressure control valve as the amount of ozone water used increases, the second pressure control valve opens to set the water pressure in the ozone water supply line Hold on value.
[0009]
Therefore, in the ozone water producing apparatus according to claim 2, the first and second pressure control valves are sequentially opened according to the decrease in the water pressure in the ozone water supply pipe due to the increase in the amount of ozone water used. And since raw | natural water is poured into a 2nd bypass line, the amount of water which flows into a flow sensor can be restrict | limited to below rating. Then, when the flow rate sensor detects the increase in the amount of water, the ozone generation amount of the ozone generator increases and the second pressure control valve of the second bypass line is opened to the ozone water that becomes a high concentration, The raw water flowing through the two bypass pipes can be mixed to supply ozone water that matches the amount used. In addition, the relationship between the flow rate detected by the flow sensor and the total water amount has a substantially constant correlation regardless of the raw water pressure, so the ozone generation amount of the ozone generator is determined based on the detected water amount of the flow sensor. By controlling, ozone water having a substantially constant concentration can be produced. Furthermore, the ozone water production apparatus can be miniaturized and provided at low cost.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
(First embodiment)
A first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic block diagram of an ozone water production apparatus 1, and FIG. 2 is an enlarged cross-sectional view of an aspirator 2. An aspirator 2 is interposed in the raw water supply pipe 3 that supplies raw water to the gas-liquid separator 14. That is, the intermediate portion of the raw water supply pipe 3 is connected to the first connection rod 4 of the aspirator 2. Connected to the second connection rod 5 of the aspirator 2 is a first bypass pipeline 8 that branches from the raw water supply pipeline 3 and bypasses the first nozzle 22 coupled to the first connection rod 4 of the aspirator 2. Yes. The first bypass pipe 8 is provided with a pressure control valve 7 and a flow rate sensor 6 so that the flow rate sensor 6 is located downstream of the pressure control valve 7. An ozone supply pipe 11 connected to the ozone generator 10 is connected to the ozone suction bowl 9 of the aspirator 2.
[0011]
The flow sensor 6 detects the amount of water flowing through the first bypass pipe 8 and feeds it back to the controller 12. The controller 12 controls the amount of ozone generated by the ozone generator 10 according to the detected amount of water so that ozone water having a predetermined concentration is produced. The pressure control valve 7 opens when ozone water is used and the water pressure in the ozone water supply line 13 drops to a set pressure, and the valve opening degree is changed according to the water pressure to change the ozone water supply line 13. Hold the water pressure at the set value.
[0012]
As shown in FIG. 2, the aspirator 2 has an ozone dissolution chamber 21 formed at the approximate center in the length direction. A first nozzle 22 is coupled to the first connection rod 4 to which the raw water supply pipeline 3 is connected. The first nozzle 22 that gradually narrows the inner diameter toward the tip reaches the ozone dissolution chamber 21. The ozone dissolution chamber 21 is in communication with the ozone suction bowl 9. A second nozzle 23 is formed downstream of the ozone dissolution chamber 21 on the downstream side. A diffuser 24 is formed at the tip of the second nozzle 23. The outer periphery of the second nozzle 23 communicates with the second connection rod 6 of the aspirator 4.
[0013]
When the aspirator 2 uses ozone water and opens a faucet 15 to be described later, the raw water pressurized to the first nozzle 22 is supplied from the raw water supply pipe 3 directly connected to the first connecting rod 4. This raw water is ejected from the first nozzle 22, whereby ozone is sucked into the ozone dissolution chamber 21 from the ozone suction tank 9, and ozone is mixed and dissolved in the raw water. The raw water whose flow rate is controlled by the pressure control valve 7 of the first bypass pipe 8 is also ejected from the outer periphery of the second nozzle 23.
[0014]
The tip of the diffuser 24 of the aspirator 2 is connected to the gas-liquid separator 14. A plurality of faucets 15 are attached in parallel downstream of the gas-liquid separator 14. The gas-liquid separator 14 separates ozone in a bubble state without being dissolved out of the ozone mixed and dissolved in the raw water by the aspirator 2. The separated ozone is reduced to oxygen by the remover 16 and released to the atmosphere.
[0015]
The raw water supply pipe 3 has a second bypass pipe 17 that branches between the flow sensor 6 of the first bypass pipe 8 and the pressure control valve 7 and bypasses the flow sensor 6 and the aspirator 2. Is provided. The second bypass pipe 17 is provided with a differential pressure adjusting valve 18 that opens when the differential pressure across the front and rear exceeds a set value.
[0016]
In the ozone water production apparatus 1 having the above configuration, when the faucet 15 is opened to use ozone water and the water pressure in the ozone water supply line 13 is lowered to the set pressure, the pressure control valve 7 in the first bypass line 8 is opened. Then, the valve opening degree is changed according to the water pressure of the ozone water supply pipe 13, and the water pressure of the ozone water supply pipe 13 is held at a set value. When the amount of ozone water used is small, the differential pressure adjustment valve 18 is closed because the differential pressure before and after the differential pressure adjustment valve 18 is small.
[0017]
The flow rate of the raw water flowing through the first bypass pipe 8 is detected by the flow rate sensor 6, and the controller 12 controls the ozone generation amount of the ozone generator 10 based on this flow rate. When the amount of ozone water used increases and the water pressure in the ozone water supply line 13 further decreases, and the amount of water flowing through the first bypass line 8 increases, the differential pressure before and after the differential pressure regulating valve 18 becomes the set value. Beyond that, since the differential pressure regulating valve 18 is opened and the raw water is allowed to flow through the second bypass pipe 17 as well, the amount of water flowing through the flow rate sensor 6 can be limited to below the rating. Then, when the flow rate sensor 6 detects the increase in the amount of water, the amount of ozone generated by the ozone generator 10 is increased and the ozone water that becomes high concentration is mixed with the raw water flowing through the second bypass pipe 17 to use the amount. Can be supplied with ozone water.
[0018]
Further, the relationship between the flow rate detected by the flow sensor 6 and the total water amount has a substantially constant correlation regardless of the feed water pressure (Pi) of the raw water as shown in FIG. Based on the amount of water, the amount of ozone generated by the ozone generator 10 can be controlled by the controller 12 to produce ozone water having a substantially constant concentration. Furthermore, the maximum amount of water flowing to the flow sensor 6 can be changed by changing the adjustment pressure set in the differential pressure adjustment valve 18. Therefore, flow rate sensors with different ratings can be used as appropriate.
[0019]
(Second Embodiment)
As shown in FIG. 4, the basic configuration of the ozone water production apparatus 31 of the second embodiment is substantially the same as that of the ozone water production apparatus 1 of the first embodiment. For this reason, the same code | symbol as the ozone water manufacturing apparatus 1 is attached | subjected to the same component, and detailed description is abbreviate | omitted. The ozone water production apparatus 31 has a first bypass pipe 8 that is the same as that of the first embodiment in the raw water supply pipe 3 and a second bypass pipe 32 that bypasses the aspirator 2. The second bypass pipe 32 is provided with a second pressure control valve 33 whose operating pressure is set lower than that of the first pressure control valve 7 a of the first bypass pipe 8.
[0020]
When the faucet 15 is opened to use ozone water and the water pressure in the ozone water supply line 13 is reduced to the operating pressure set in the first pressure control valve 7a, the ozone water production apparatus 31 having the above configuration has the first bypass pipe. The first pressure control valve 7a of the path 8 is opened, the valve opening is changed according to the water pressure of the ozone water supply pipe 13, and the water pressure of the ozone water supply pipe 13 is held at a set value. Then, raw water flows through the first bypass pipe 8 and is detected by the flow sensor 6, and the controller 12 controls the ozone generation amount of the ozone generator 10 based on the detected flow rate.
[0021]
When the amount of ozone water used increases, the water pressure in the ozone water supply line 13 further decreases, so that the second bypass line 32 in which the operating pressure lower than the operating pressure of the first pressure control valve 7a is set. The pressure control valve 33 is opened, the amount of water increases, and the water pressure in the ozone water supply line 13 is held at a set value. Then, the second pressure control valve 33 of the second bypass pipe 32 is opened to the ozone water in which the ozone generation amount of the ozone generator 10 increases and becomes a high concentration when the flow sensor 6 detects the increase of the water amount. Then, the raw water flowing through the second bypass pipe 32 can be mixed to supply ozone water corresponding to the amount used.
Further, the relationship between the flow rate detected by the flow rate sensor 6 and the total water amount has a substantially constant correlation regardless of the feed water pressure (Pi) of the raw water as shown in FIG. Based on the detected amount of water, the amount of ozone generated by the ozone generator 10 can be controlled to produce ozone water having a substantially constant concentration.
[0023]
Further, a third branch bypass line for bypassing the aspirator 2 is provided in parallel with the second branch bypass line 32, and the third branch bypass line is connected to the second pressure control valve 33 of the second bypass line 32. In addition, the production amount of ozone water can be further increased by interposing the third pressure control valve whose operating pressure is set lower.
[Brief description of the drawings]
FIG. 1 is a schematic block diagram of an ozone water production apparatus according to a first embodiment.
FIG. 2 is an enlarged cross-sectional view of an aspirator.
FIG. 3 is a graph showing the relationship between the flow rate detected by the flow sensor and the total amount of water.
FIG. 4 is a schematic block diagram of an ozone water production apparatus according to a second embodiment.
FIG. 5 is a schematic block diagram of a conventional ozone water production apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1,31 ... Ozone water production apparatus 2 ... Aspirator 3 ... Raw water supply pipeline 6 ... Flow sensor 7 ... Pressure control valve 7a ... First pressure control valve 8 ... No. 1 bypass line 10 ... ozone generator 11 ... ozone supply line 13 ... ozone water supply line 17,32 ... second bypass line 18 ... differential pressure regulating valve 22 .. .First nozzle 23 ... second nozzle 33 ... second pressure control valve

Claims (2)

  1. In an ozone water production apparatus for producing ozone water by interposing an aspirator in the raw water supply pipeline and connecting an ozone supply pipeline to the aspirator to dissolve ozone in the raw water,
    The aspirator has a first nozzle and a second nozzle in series, and connects the raw water supply pipe to the first nozzle, while the second nozzle branches from the raw water supply pipe to the first nozzle. Connect the first bypass line to bypass,
    A pressure control valve for controlling the water pressure of the first bypass line so that the water pressure of the ozone water supply line is maintained at a set value in balance with the water pressure of the ozone water supply line in the first bypass line; A flow rate sensor for detecting the amount of water flow through the first bypass pipe for controlling the amount of ozone generated is interposed so that the flow rate sensor is located downstream of the pressure control valve,
    Further, a second bypass pipe that bypasses the flow sensor and the aspirator by branching between the pressure control valve and the flow sensor of the first bypass pipe is provided, and a differential pressure across the second bypass pipe is provided. An ozone water production apparatus comprising a differential pressure regulating valve that opens when a set value is exceeded.
  2. In an ozone water production apparatus for producing ozone water by interposing an aspirator in the raw water supply pipeline and connecting an ozone supply pipeline to the aspirator to dissolve ozone in the raw water,
    The aspirator has a first nozzle and a second nozzle in series, and connects the raw water supply pipe to the first nozzle, while the second nozzle branches from the raw water supply pipe to the first nozzle. Connect the first bypass line to bypass,
    A first pressure control valve that controls the water pressure of the first bypass pipe so that the water pressure of the ozone water supply pipe maintains a set value in balance with the water pressure of the ozone water supply pipe. And a flow rate sensor for detecting the amount of water flow through the first bypass line for controlling the amount of ozone generated, so that the flow rate sensor is located downstream of the first pressure control valve,
    Furthermore, a second bypass pipe that bypasses the aspirator is provided in the raw water supply pipe, and a second pressure control valve that has a lower operating pressure than the first pressure control valve is provided in the second bypass pipe. An ozone water production apparatus characterized by that.
JP2000332283A 2000-10-31 2000-10-31 Ozone water production equipment Active JP3680726B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000332283A JP3680726B2 (en) 2000-10-31 2000-10-31 Ozone water production equipment

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Application Number Priority Date Filing Date Title
JP2000332283A JP3680726B2 (en) 2000-10-31 2000-10-31 Ozone water production equipment

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JP3680726B2 true JP3680726B2 (en) 2005-08-10

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4774194B2 (en) * 2003-03-18 2011-09-14 株式会社ブンリ Filtration device
WO2013086217A1 (en) 2011-12-06 2013-06-13 Masco Corporation Of Indiana Ozone distribution in a faucet
CA2946465A1 (en) 2015-11-12 2017-05-12 Delta Faucet Company Ozone generator for a faucet
KR101818048B1 (en) 2015-11-19 2018-02-22 에스케이하이닉스 주식회사 Circulated Ozonate Water Generator

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