JPH0674569A - Control device for foaming water current generator - Google Patents

Abstract

PURPOSE:To enhance the safety of a device by detecting an operational failure of a feed pipeline and a pump or the like which send air-diffused water which produces a fine foaming water current to a water tank. CONSTITUTION:A pump 5 circulates water through a circulation water circuit A, and discharges a part of the water to a water tank 1 by way of a feed pipeline 3. An ejector 8 introduces water into the circulation water circuit section A from the water tank 1 by the air from an air in-flow apparatus 16 and a return pipeline 18 by the action of a negative pressure section 8a produced by circulation water. The air is pressure-dissolved into the water by a pump so that the pressure is reduced from the feed pipeline 3 and the water is discharge into the water tank 1, thereby producing a foaming air current. A control means 19 continues the operation of the foaming air current if the pressure of the feed pipeline 3 detected by a detector 14 indicates a normal value. However, if the detected pressure is abnormal, the in-flow apparatus is closed so as to stop the penetration of air. Furthermore, the control means stops the operation of the pump under control. This construction makes it possible to detect operational failures in the circulation water circuit section and the feed pipeline and the like and hence being the operations to safety side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a controller for a bubbling water flow generator having a function of generating a fine bubbling water flow in a bath or other water tank by a pump for circulating water.

[0002]

2. Description of the Related Art Conventionally, as a bubbling water flow generator (jet bath device) for generating this kind of fine bubbling water flow, Japanese Patent Publication No.
The disclosure examples described in Japanese Patent No. 14464 are shown in FIGS. 4, 5 and 6. A pump unit 104 having a pump 103 for circulating hot water 102 in a bath 101, and a pump 10.
3, a low-pressure jet nozzle 109 and a high-pressure jet nozzle 110, which are branched and connected via a two-way valve 108, to an inhaler 106 of the hot water 102 connected to the suction side pipe 105 of the third embodiment and a discharge side pipe 107 of the pump 103. Noble unit 11
It is composed of 1. Further, the suction side pipe line 1 of the pump 103
05 is provided with a jet passage 112, and the discharge side pipe line 1
Shuttle valve 1 between 07 and jet passage 112
A branch passage 114 is piped through 13.

The shuttle valve 113 has a conical valve 116 biased by a spring 115 as shown in FIG.
The valve rod 117 connected to the conical valve 116, the conical valve 11
The air intake passage 118 and the air passage 11 in which the flow of air into and out of the jet passage 112 is stopped by opening and closing 6.
It is composed of nine.

Further, as shown in FIG. 6, the high-pressure jet nozzle 110 has a gas-liquid mixer 122 having spiral passages 120 and 121 alternately, and a valve body 1 urged by a spring 123.
Relief valve 1 having 24 and jet outlet 125
It is composed of 26.

Next, the operation will be described. When the fine bubbling water flow is generated, when the pump 103 is operated in FIG. 4, the warm water 102 is sucked from the inhaler 106 to the pump 103 through the suction side pipe line 105 and the jet passage 112. afterwards,
The high-pressure jet nozzle 110 jets a fine bubbling water stream into the bath 101 from the pump 103 via the discharge side conduit 107. At this time, the discharge pressure of the pump 103 is the branch line 114.
The discharge pressure increases, and the conical valve 116 connected to the valve rod 117 overcomes the biasing force of the spring 115 to open the conical valve 116. As a result, air is sucked into the jet passage 112 through the air intake passage 118, the conical valve 116, and the air passage 119, and is sucked into the pump 103. The sucked air is sent under high pressure to the pump 103, the discharge side pipe 107 and the gas-liquid mixer 122 in the high-pressure jet nozzle 110, and is pressurized and dissolved.

[0006]

However, in the above-mentioned configuration, normally, at the start of the operation of generating the fine bubbly water flow,
When the pump 103 in a full state is activated, the warm water 102 flows from the inhaler 106 to the pump 10 via the suction side pipe line 105.
Inhale to 3. When the warm water 102 is inhaled, the relief valve 126 becomes a discharge resistance, and the pump 103, the discharge side pipe line 107, and the shuttle valve 113 are set to a high pressure state almost instantaneously. However, when the pump 103 produces air dust, the air is repeatedly compressed and decompressed, so that the high pressure state is unlikely to occur. This is because when the generation operation of the fine bubbling water flow is completed, the pressure inside the pump 103 is reduced from the high pressure state to the atmospheric pressure, so that the air that has been pressure-dissolved in the warm water until now is re-gasified and the pump is This is because the air stays in the inside 103, and this is in an air-blown state at the time of re-operation.

Also in the discharge side conduit 107 and the relief valve 126, air is regasified in the same manner as described above, and this becomes the only air of the pump 103.

When the warm water 102 in the bathtub 101 is further drained, the warm water 102 in the suction side pipe line 105 is similarly totally drained or partially drained, and the warm water 102 is again drained.
When the air is injected into No. 1, the air naturally stays in the suction side pipe line 105, and when the pump 103 is operated, the air is generated by the pump 10
3 may be inhaled in large quantities.

Further, as an abnormal condition during the operation of generating fine bubbles, there is a case where the pressure and the amount of water decrease due to water leakage in the discharge side conduit 107 including the pump 103, and the suction side conduit including the pump 103 increases. There is a possibility that the amount of water and the amount of water due to the large amount of air flowing from the negative pressure inflowing from 105 will decrease.

Further, when the air intake passage of the shuttle valve 113 is abnormal, a large amount of air flows in to reduce the pressure and the amount of water, and finally the relief valve 12
There is an increase in pressure and a decrease in the amount of water due to the clogging of foreign matter and the like in item 6.

The present invention solves the above-mentioned problems, and provides a control device for a bubbling water flow generating device which improves the safety and the safety of detecting an abnormality in a pump or the like for generating a fine bubbling water flow. .

[0012]

In order to achieve the above object, the first technical means in the control device of the bubbly water flow generator of the present invention is a water tank and a feed pipe line connected to a fine bubbly water flow discharge part provided in the water tank. And a return pipe connected to the outflow part for flowing out the water in the water tank, a pump for circulating the water in the water tank, connected between the discharge part and the return part of the pump, and connected in the middle to the feed line. No circulating water discharge part, a circulating water circuit part for circulating a part of the water from the circulating water discharge part, and provided between the circulating water discharge part of the circulating water circuit part and the return part,
And an ejector section having a water inflow section connecting the return pipe line and an air inflow section connecting the air inflow unit, a negative pressure section that communicates the both inflow sections and produces a negative pressure action by circulating water,
A resistance part for negatively inflowing water and air from the ejector part, a pressurizing throttle part provided in the feed pipe line from the circulating water discharge part to the fine bubble water flow discharge part, the pressurizing throttle part and the circulating water. Provided in the feed line between the circuit parts, input the detection part and the detection signal of this detection part to detect the pressure or water amount,
A control means for controlling the air inflow device and the pump is provided.

The second technical means of the present invention is, when a signal of abnormality detection is received from the detection section, after a predetermined time has elapsed,
The control means for controlling the closing of the air inflow device and the stop of the operation of the pump is provided.

[0014]

When the detector detects the pressure in the feed pipe by the above means, the control means receives the signal and controls the air inflower and the pump. That is, in a normal state, the air inflow device is opened, the detection level of the detection unit is maintained, and a change of a certain amount or more, that is, an abnormality detection instruction is made to act on the safe side. Even if the pump is operated, the pressure of the feed line does not necessarily increase immediately. When the pump operates, the return portion and the ejector portion of the pump allow water to flow in by repeating the negative pressure-atmospheric pressure even when the pressure is low. At this time, if the air inflow device is opened, the negative pressure causes air to flow in from the air inflow part of the ejector part. The air that has flowed in flows into the pump from the return portion of the pump, and the pump causes air smear. When this air bleeding occurs, the pump cannot increase its pressure because the amount of water discharged from the pump is small. For this reason, since air cannot be melted under pressure, generation of fine bubbles, which is the main function, is impossible. In order to solve such a problem, it is indispensable to open the air inflow device and inject air after the pressure has been raised. On the other hand, since the throttle area S of the pressurizing throttle portion, that is, the opening portion is small, foreign matter in the water tank, the return pipe line and the feed pipe line (for example, hair, towel loosening thread, small stones, pipe chips, pipe pipe, It is easy to get clogged with sealing tape for connection, rust and other debris from piping). If foreign matter is clogged, the pump, circulating water circuit section and feed pipe line will have an abnormally high pressure, which will result in safety and durability such as water circuit leakage and destruction of the pump, etc., beyond the pressure specifications. It is significantly deteriorated, and in the worst case, a failure such as being unusable occurs. Therefore, as a means for satisfying the above-mentioned essential conditions, stable air bubbles can be generated by opening the air inflow device in response to a detection instruction from the detection unit. Furthermore, by holding the detection level of the detection unit during steady operation and closing the air inflow device by instructing detection of fluctuations of a certain amount or more, and then stopping the operation of the pump, the pump, circulating water circuit unit, feed It is possible to improve the safety and durability of water circuits such as pipe lines.

Further, after the abnormality detection instruction of the detection unit has passed for a predetermined time, by closing the air inflow device and stopping the operation of the pump, the reliability of the abnormality detection instruction during the steady operation is further improved, Malfunctions can be eliminated. Also,
It is possible to more stably generate fine bubbles.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a control device for a bubble generator according to the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic configuration diagram of a first embodiment of the present invention, in which a water tank 1 is connected to the fine bubble water flow discharge portion 2 provided in the water tank 1 and the fine bubble water flow discharge portion 2. A return line 18 connected to a feed line 3 for sending pressurized dissolved air and an outflow section 17 for flowing out the water 4 in the water tank 1 is provided. The pump 5 has both functions of circulating and pressurizing the water 4 in the water tank 1, and is of a fugal type, a cascade type, with a pressurizing specification and a self-contained specification added thereto.
Is in communication between. The circulating water circuit unit A is connected between the discharge unit 6 and the return unit 7 of the pump 5, and is connected to the feed pipe line 3 to form a circulating water discharge unit 12. This circulating water discharge unit 1
Circulate a part of water from 2. The ejector section 8 is connected to the circulating water circuit section A between the circulating water discharge section 12 and the return section 7,
It has a negative pressure portion 8a which becomes a negative pressure region due to the action of circulating water, a water inflow portion 9 and an air inflow portion 10 which communicate with this. The ejector section 8 connects the return inflow line 18 to the water inflow section 9, and connects the air inflow section 16 to the air inflow section 10 such as an air solenoid valve, a motor-type on-off valve, and a motor-type needle valve to stop and flow air. is doing. Reference numeral 13 is a pressurizing throttle portion provided in the feed pipe line 3 close to the fine bubble water flow discharge portion 2, and has a pressurizing and depressurizing function such as a throttle valve, a valve body with a spring, a valve body with a diaphragm / spring, and a needle valve. ing. Reference numeral 15 denotes a fluid resistance portion formed by narrowing the diameter of the return conduit 18 near the water inflow portion 9, and allows water and air to flow in a negative pressure from the ejector portion 8. Reference numeral 14 is a detection unit provided in the feed pipe line 3 between the pressurization throttle unit 13 and the circulating water discharge unit 12, and detects the pressure when the pressure sensor is used and the water amount when the water amount sensor is used. , Detects normal and abnormal operation of the entire device. Reference numeral 19 denotes a feed pipe line 3, a pump 5, an ejector unit 8, and a pressurizing throttle unit 1.
3, a resistance unit 15, an air inflow unit 16, a return pipe 18, a circulating water circuit unit A is a control means for controlling the bubbly water flow generating means, which is equipped with an operation switch (not shown), and also has a detecting section 14. In order to control the pump 5 and the air inflower 16 according to the detection instruction of, the connection is made with these as shown by the dotted line.

That is, when the control means 19 turns on the operation switch to start the operation of the pump 5, the detection unit 14 detects whether or not the feed pipe line 3 has reached the set pressure by the pump 5.
Is detected, and when the set pressure is reached, the air inflow device 16 is closed to open to allow air to flow into the circulating water circuit section A, and the detection section 14 sets a fixed amount of fluctuation constant at the set pressure, that is, ± ΔP. When the above-mentioned abnormal fluctuation occurs, the air inflow device 16 is closed, and the operation of stopping the pump 5 is controlled.

The operation of generating a bubbly water flow in the present invention will now be described by operating the operation switch of the control means 19.
Then, the pump 5 in a state of being filled with water rotates, and a part of the discharged circulating water is discharged from the circulating water discharging unit 12 through the feed pipe line 3 and the pressurizing throttle unit 13 to the fine bubbling water flow discharging unit 2. The rest of the circulating water circulates in the circulating water circuit portion A while being ejected to the water tank 1. When this circulation is performed, the ejector unit 8
, And the water 4 in the water tank 1 is sucked into the negative pressure portion 8a of the ejector portion 8 through the return pipe 18. Then, when this water 4 is sucked into the return portion 7 of the pump 5 via the ejector portion 8, the pressure on the suction side of the pump 5 rises. If the pump 5 continues to operate in this state, the pressure on the discharge portion 6 side is also increased. That is, since the pressurizing throttle portion 13 of the feed pipe line 3 is abruptly contracted, the pump 5 is operating in a substantially deadline operation state. Therefore, the pressure on the side of the return portion 7 rises, and the shut-off pressure of the pump 5 is applied, so that the pressure rise can be obtained. Since the air inflow device 16 is also operated by the control means 19 in such an operating state, air is inflowed and sucked from the air inflow part 10 to the negative pressure part 8a of the ejector part 8. This air enters the pump 5 from the return section 7 and then the discharge section 6
From the circulating water circuit section A to the feed pipe line 3. At this time, since the circulating water circuit portion A and the inside of the feed pipe line 3 have high pressure, the air previously sucked is in a state of being dissolved in the water 4. Then, when the water in which the air is dissolved passes through the pressurizing throttle portion 13, it is rapidly decompressed and the dissolved air becomes fine bubbles and spreads from the fine bubble water flow discharge portion 2 to the water tank 1.
Further, when such an operation is stopped, the air dissolved in the water in the bubbly water flow generating means is vaporized again and stays as air because the pressure in the means disappears.

The configuration of the present invention will be described in detail below.
As a point of, the circulating water 11 discharged from the discharge part 6 of the pump 5 is branched from the circulating water discharge part 12 to the feed pipe line 3 side and the ejector part 8 side so as to flow,
In particular, the pump 5, the pressurizing throttle portion 13 and the ejector portion 8
The pressure is increased by the three factors. Further, as a means for pressurizing and dissolving air under high pressure, in the conventional example, the gas-liquid mixer 1 provided with the spiral passages 120 and 121 provided in the relief valve 126 alternately.
Although 22 was the main pressure dissolution of air, in the present invention, the circulating water circuit portion A including the pump 5 is the main pressure dissolution of air. That is, in the feed pipe line 3 side flow rate Q1 and the ejector section 8 side flow rate Q2, by setting Q2> Q1,
Assuming that the / Q1 ratio is the number of circulations, by increasing the number of circulations, air can be sufficiently dissolved under pressure. In addition, the circulating water circuit section A also has a buffer effect for reducing the air entrainment of the pump 3. That is, this is because the pressure-melted air is likely to stay in the circulating water circuit unit A even if it is regasified.

Further, the detection unit 1 is provided upstream of the pressing throttle unit 13.
Since 4 is provided, it is possible to increase the pressure of the feed pipe line 3 to open the air inflow device 16, and it is possible to immediately cope with an abnormality during operation.

Next, the operation of the control means, which is a feature of the present invention, will be described with reference to the flow chart of FIG. 2 for the processes S-1 to S-7. When the operation switch of S-1 is set to [ON], S-2. The pump 5 is turned on (operated). S
-2, the pump 5 is turned on, the process proceeds to S-3, the detection unit 14 of the pressure sensor is activated, and the set pressure (normal detection)
Check whether or not. When the set pressure is reached, S-
4, the air inflow device 16 is opened. When the air inflow device 16 of S-4 is opened, the process proceeds to S-5, and it is determined whether or not the pressure of the detection unit 14 has an abnormal fluctuation (abnormal detection) at a detection level set by a constant amount of fluctuation constant, that is, ± ΔP or more. To check. When an abnormal change is detected, the process proceeds to S-6, and the air inflow device 16 is closed. Next, the air inlet 16 of S-6
Is closed, the process proceeds to S-7, and the operation of the pump 5 is controlled to be stopped. This makes it possible to prevent damage to the device when the pressure is abnormally high. Although not shown in the drawing, when the pressure sensor 14 as the detection unit 14 is a water amount sensor, a means for checking whether or not the water amount has a fluctuation level set to a constant value of fluctuation constant, that is, whether or not the fluctuation abnormally exceeds ± ΔQ or more. Is a similar flowchart.

Next, processing S- regarding the second embodiment of the present invention
Explaining with the flowchart of FIG. 3 from 8 to S-15, until the operation switch of S-8 is checked from [ON] to S-12 by the detection unit 14 whether or not the feed pipe line 3 is abnormally changed. Since the control is the same as that in FIG. 2, the description will be omitted. When an abnormal change in S-12 is detected, the process proceeds to S-13, the timer of the control means 19 is activated, and it is checked whether or not the abnormal change in the detection unit 14 has passed a predetermined change time Δt = t1. If the abnormal fluctuation returns to normal within the fluctuation time Δt = t1, that is, if it returns to within ± ΔP, S-12 to S-13
Is repeated. On the other hand, if an abnormal change is detected even after the change time Δt = t1, the process moves to S-14, and the air inflow device 16 is closed. Next, the air inflow device 16 of S-14 is closed, and the operation of the pump 5 is controlled to be stopped in S-15.

Although not shown, FIG. 1 of the present invention
In the schematic configuration diagram shown in FIG. 2, the fine bubbling water flow discharger 2 and the discharger 17 are separately configured in the present embodiment, but they may be integrally configured, and the same effect can be obtained. Further, the pressurizing throttle portion 13 is provided in a part of the feed pipe line 3.
Although the description has been made with the provision of the above, the same operational effect can be obtained even if it is integrated with the fine bubbling water flow discharger 2. Further, the water inflow portion 9 and the air inflow portion 10 provided in the ejector portion 8 have been described as different configurations, respectively, but if the air inflow portion 10 is provided between the water inflow portion 9 and the resistance portion 15 of the ejector portion 8, the same applies. The effect of is obtained. Finally, the water inflow part 9 of the ejector part 8
Although the resistance part 15 is provided on the downstream side of the above, the same effect can be obtained even if the water inflow part 9 is also used as the resistance part 15 or the return pipe 18 connecting the water inflow part 9 has a small diameter. Since the action and effect can be obtained, the present invention is not limited to the schematic configuration diagram of FIG. 1, and the configuration is also within the scope of the present invention.

[0025]

As is apparent from the above description, according to the first aspect of the control device for the bubbly water flow generator of the present invention,
Since the control means controls the air inflow device and the pump by inputting the pressure or water amount detection signal from the detection unit, the abnormality of the water circuit such as the pump, the circulating water circuit unit, the feed pipe line and the return pipe line. The discovery, safety and durability can be significantly improved. Further, according to claim 2, the reliability of the abnormality detection instruction is improved by closing the air inflow device and stopping the pump operation for a predetermined time after the control means receives the abnormality detection instruction from the detection unit. , Malfunction can be eliminated.

Although not shown and described in detail, if the detection unit uses both signals of pressure and water amount, the reliability of the abnormality detection instruction is further improved, stable generation of fine bubbles and safety of the pump and the like. The durability and durability can be further improved.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing a controller of a bubbly water flow generator according to an embodiment of the present invention.

FIG. 2 is an operation flowchart of the control device.

FIG. 3 is an operation flowchart of a controller for a bubbly water flow generator according to a second embodiment of the present invention.

FIG. 4 is a system configuration diagram showing a conventional jet bath device.

FIG. 5 is a sectional view of a shuttle valve of a conventional jet bath device.

FIG. 6 is a sectional view of a relief valve of a conventional jet bath device.

[Explanation of symbols]

 2 Micro bubble discharge part 3 Feed line 5 Pump 6 Discharge part 7 Return part 8 Ejector part 9 Water inflow part 10 Air inflow part 12 Circulating water discharge part 13 Pressurization throttle part 14 Detection part 15 Resistance part 16 Air inflow device 18 Return Pipe line 19 Control means

Front page continued (72) Inventor Kazuo Kubo 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Yukinori Ozaki 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. (72) Inventor Yu Kawai 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Kunio Nakamura 1006 Kadoma, Kadoma City Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (2)

[Claims] 1. A water tank, a feed pipe line connected to a fine bubbling water flow discharge unit provided in the water tank, a return pipe line connected to an outflow unit for discharging water in the water tank, and a pump for circulating water in the water tank. A circulating water circuit part that is connected between the discharge part and the return part of the pump, and is connected to a feed line to form a circulating water discharge part, and a circulating water circuit part that circulates a part of the water from the circulating water discharge part. A water inflow part provided between the circulating water discharge part and the return part of the circulating water circuit part and connected to the return pipe line, an air inflow part connected to an air inflow device, and both the inflow parts communicate with each other to circulate An ejector section having a negative pressure section that produces a negative pressure action by water, a resistance section that allows negative pressure inflow of water and air from this ejector section, and the feed pipe line from the circulating water discharge section to the fine bubbling water flow discharge section. The pressurizing throttle provided and the pressurizing throttle and the circulating water circuit Of a bubbly water flow generator equipped with a detection unit for detecting pressure or water amount, which is provided in a feed pipe line between the units, and a control means for inputting a detection signal of the detection unit and controlling the air inflow unit and the pump. apparatus. 2. The bubbly water flow generation according to claim 1, wherein the control means performs control to close the air inflow device and stop the operation of the pump after a lapse of a predetermined time when the abnormality detection signal is received from the detection unit. The control device of the device.