JPH05305115A - Bubble water flow generator - Google Patents

Abstract

PURPOSE:To increase a jetting flow rate in the generation of large bubbles while generating fine bubbles with a reduction in the pressure of high pressure water having air dissolved. CONSTITUTION:In the generation of fine bubbles, a flow from a circulation pump 33 runs to a bypassing path 43 to produce high pressure water with the action of an ejector 42 and the water is sent to a fine bubble generation means from a feed pipe 56 to decompress so that fine bubbles are generated. In the generation of large bubbles, hot water made to flow to both of an outgoing pipe 38 and a feed pipe 56 thereby increasing a jetting flow rate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bubble water flow generator having a function of generating bubbles in a water tank by circulating water with a pump.

[0002]

2. Description of the Related Art A conventional bubble bath device has a structure as shown in FIGS. That is, a pump unit 4 provided with a pump 3 for circulating the hot water 2 in the bathtub 1,
A low-pressure jet nozzle 9 and a high-pressure jet nozzle 10, which are branched and connected via a two-way valve 8 to a hot water inhaler 6 connected to a suction side pipe line 5 of the pump 3 and a discharge side pipe line 7 of the pump 3, are provided. It is composed of the nozzle unit 11. A jet passage 12 is provided in the suction side pipeline 5 of the pump 3, and the shuttle valve 1 is provided from the discharge side pipeline 7 to the jet passage 12.
The branch pipe line 14 is piped through the line 3. The shuttle valve 13 is a conical valve 16 biased by a spring 15.
And a valve rod 17 connected to the conical valve 16, an air intake passage 18, and an air passage 19. On the other hand, the high-pressure jet nozzle 10 is composed of a gas-liquid mixer 22 having spiral passages 20 and 21 alternately, and a relief valve 26 having a valve body 24 and a jet outlet 25 urged by a spring 23. There is. Further, the low pressure jet nozzle 9 is
A hot water flow passage 27 and an air inflow passage 28 formed on the outer periphery of the flow passage 27 are provided, and a narrow passage 29, a wide chamber 30, and a nozzle 31 are provided downstream of the flow passage 27. Further, the air inflow passage 28 communicates with the wide chamber 30 via the narrow passage 32.

Next, the operation will be described. During the operation of generating fine bubbles, when the pump 3 is operated in FIG. 5, the warm water 2 is sucked from the inhaler 6 to the pump 3 via the suction side conduit 5, and then the high pressure jet nozzle from the pump 3 via the discharge side conduit 7. Fine bubbles are ejected from 10. At this time, the discharge pressure of the pump 3 acts on the branch circuit 14 to increase the discharge pressure, and the conical valve 16 connected to the valve rod 17 overcomes the biasing force of the spring 15 to open the conical valve 16. As a result, the air is sucked into the jet passage 12 through the air intake passage 18, the conical valve 16 and the air passage 19 and is sucked into the pump 3. The sucked air is melted under high pressure by the pump 3,
It is sent from the discharge side pipe line 7 to the high pressure jet nozzle 10. On the other hand, during the operation of generating large bubbles, the two-way valve 8 in FIG. 5 is switched,
Hot water from the pump 3 is jetted from the low-pressure jet nozzle 9 to the bathtub 1 (for example, Japanese Patent Publication No. 3-14464).

[0004]

However, the above-mentioned conventional structure is costly because a large pump is required for pressurizing and melting at a high pressure. The present invention is to solve the above problems, and an object of the present invention is to provide a bubble water flow generator that generates fine bubbles and large bubbles with a small pump, and to increase the ejection flow rate when large bubbles are generated with a small pump. It is a thing.

Another object of the present invention is to make it possible to generate and eject fine bubbles in a short time when switching from the large bubble generating operation to the fine bubble generating operation.

Further, the present invention aims to control the generation amount of fine bubbles.

[0007]

In order to achieve the above object, the present invention circulates water in a water tank, a bubble ejecting device provided in the water tank, which includes fine bubble generating means and large bubble ejecting means, and water in the water tank. Controls the circulation pump, the forward pipe from the discharge side of the circulation pump to the large bubble jetting device, the feed pipe from the discharge side of the circulation pump to the fine bubble generating device, and the flow to the forward pipe and the feed pipe Control means, a return pipe connecting the water tank and the suction side of the circulation pump, an ejector provided in the bypass passage of the forward and return pipes of the circulation pump,
Switching means provided on the suction side of the circulation pump to switch the suction direction to the circulation pump to the ejector side and the return pipe side, a suction pipe connected to the ejector from the upstream side of the switching means, and an air control means for the ejector and the atmosphere. And an air introducing means provided via a feed pipe, and the feed pipe is opened when fine bubbles are generated, and the forward pipe and the feed pipe are opened when large bubbles are generated.

In order to achieve the second object, the present invention is configured to open the feed pipe when fine bubbles are generated, and to close the feed pipe and open the forward pipe when large bubbles are generated. ..

Further, in order to achieve the third object, the present invention is configured to control the amount of fine bubbles generated by controlling the flow rate to the feed pipe when fine bubbles are generated.

[0010]

According to the present invention, by the structure described above, when the fine bubbles are generated, the feed pipe is opened, and the suction direction to the circulation pump is switched to the ejector side, so that the suction and pressurizing action of the ejector sucks the water in the water tank. By sucking air from the pipe and sucking air from the air introducing means, the high pressure water in which the air is dissolved is discharged to the circulation pump discharge side, and the high pressure water is decompressed by the fine bubble generating means provided in the water tank to generate fine bubbles. It occurs. Also, by opening the forward pipe and the feed pipe when large bubbles are generated, the hot water discharged from the circulation pump flows to the large bubble jetting means by the forward pipe and the feed pipe, increasing the jet flow rate when large bubbles are generated. Can be done.

Further, according to the present invention, the feed pipe is opened when fine bubbles are generated, the feed pipe is closed and the forward pipe is opened when large bubbles are generated, and hot water in which gas is dissolved in the feed pipe is generated when large bubbles are generated. Is in a stagnant state, and when the operation is switched to the fine bubble generation operation next time, the hot water that has stagnated in the feed pipe is immediately decompressed by the fine bubble generating means, so that fine bubbles may be generated in a short time. it can.

Further, according to the present invention, by increasing or decreasing the flow rate to the feed pipe when the fine bubbles are generated, the hot water inflow pressure to the fine bubble generating means is changed, the degree of pressure reduction in the fine bubble generating means is changed, and the fine bubbles are changed. The amount can be controlled.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the accompanying drawings. In FIG. 1 and FIG. 2, reference numeral 33 is a circulation pump, and from the circulation pump 33, an outflow pipe 38 is connected to a bubble ejection device 37 having a fine bubble generation means 35 and a large bubble ejection means 36 provided in a bath 34 which is a water tank. It is plumbed. Reference numeral 39 is an on-off valve provided in the outflow pipe 38, and 40 is a heat exchanger. A return pipe 41 is provided from the bath 34 to the circulation pump 33. Circulation pump 3
A bypass passage 43 provided with an ejector 42 is piped from the forward pipe 38 to the return pipe 41. Reference numeral 44 is a three-way valve of a switching means that switches the suction direction to the circulation pump 33 to the ejector 42 side and the return pipe 41 side. A suction pipe 45 is provided from the upstream side of the three-way valve 44 to the ejector 42. A check valve 46 is connected to the suction pipe 45. The ejector 42 and the atmosphere are communicated with each other by an air introducing means 49 having an electromagnetic valve 47 and a check valve 48 which are air controlling means. The fine bubble generating means 35 includes a small cross-section flow path 52 formed when the valve body 50 and the valve seat 51 are in contact with each other, a diaphragm 53 that is an opening / closing means of the valve body 50, and a spring 54. The delivery side of the circulation pump 33 and the inlet 55 of the fine bubble generating means 34 are connected by a feed pipe 56. The large bubble jetting means 36 is composed of a water jetting nozzle 57, an air introducing means 49 and a jetting direction variable nozzle 58. Reference numeral 59 is a controller, and 60 is an operation panel. Reference numeral 61 is hot water, and 62 is an arrow indicating the flow direction of hot water. 63 is a fine bubble and 64 is a large bubble.

Next, the operation of the first embodiment will be described with reference to FIGS.
This will be described with reference to FIG. When fine air bubbles are generated, when the fine button on the operation panel 60 of FIG. 1 is pressed, the valve body 5 of the fine air bubble generator 35 is pressed.
0 and the valve seat 51 are in the closed state, and constitute only the small cross section flow path 52. The three-way valve 44 closes the return pipe 41, and the on-off valve 39 closes the forward pipe 38. When the circulation pump 33 is operated in such a state, the hot water discharged from the circulation pump 33 flows to the feed pipe 56 and the bypass passage 43 side. At this time, due to the suction action of the ejector 42, the hot water in the return pipe 41 is sucked into the ejector 42 via the suction pipe 45, and at the same time, the air is sucked via the electromagnetic valve 47.
When hot water is sucked in this way, the pressure on the suction side of the circulation pump 33 rises, and the pressure on the discharge side of the circulation pump 33 also rises. It is sent to the inlet 55 via 56. The hot water sent to the inlet 55 is rapidly depressurized by being jetted from the small cross section flow passage 52. As a result, the dissolved air at high pressure becomes fine bubbles and is ejected to the bath 34.

When a large bubble is generated and the operator presses the large button on the operation panel 60, the valve body 50 and the valve seat 51 of the fine bubble generator 35 are in the open state. The three-way valve 44 closes the bypass passage 42, and the on-off valve 39 opens the forward pipe 38. When the circulation pump 33 is operated in such a state, the circulation pump 3
The hot water discharged from No. 3 is sent to the large bubble jetting means 36 via the heat exchanger 40, and is sent to the large bubble jetting means 36 via the feed pipe 56. The sent hot water is jetted from the water jet nozzle 57. At this time, due to the negative pressure at the time of ejection,
Air is sucked from the air introducing means 49. The jet from the water jet nozzle 57 shears this air and jets it into the bath 34 as bubbles of 3 to 5 mm. That is, when large air bubbles are generated, the warm water discharged from the circulation pump 33 and the feed pipe 5
Both of them are sent to the large bubble jetting means.

Next, a second embodiment corresponding to the second invention will be described with reference to FIGS. An on-off valve 65 is connected to the feed pipe 56. Other configurations are similar to those in FIGS. 1 and 2, and description thereof will be omitted. The operation in this configuration will be described. When fine bubbles are generated, the open / close valve 39 is closed, the open / close valve 65 is open, and the three-way valve 44 closes the return pipe 41 in the state shown in FIG. When the circulation pump 33 is operated in such a state, the hot water discharged from the circulation pump 33 flows to the feed pipe 56 and the bypass passage 43 side. At this time, due to the suction action of the ejector 42, the warm water in the return pipe 41 is sucked into the suction pipe 4.
5 is attracted to the ejector 42 via the solenoid valve 4
Aspirate air through 7. When hot water is sucked in this way, the suction side pressure of the circulation pump 33 increases and
The pressure on the discharge side of the circulation pump 33 also increases, and high-pressure hot water in which air is dissolved is sent from the circulation pump 33 to the inlet 55 via the feed pipe 56. The hot water sent to the inlet 55 is rapidly depressurized by being jetted from the small cross section flow passage 52. As a result, the dissolved air at high pressure becomes fine bubbles and is ejected to the bath 34. When the operation panel 60 is switched to large when large bubbles are generated, the result is as shown in Fig. 4,
The on-off valve 39 opens, the on-off valve 65 closes, and the three-way valve 44 closes the bypass passage 43. When the circulation pump 33 is operated in such a state, the warm water discharged from the circulation pump 33 flows into the outflow pipe 38.
Is sent to the large bubble ejecting means 36 through the through and is ejected as large bubbles. At this time, the hot water in which the gas is dissolved is stagnant in the feed pipe 56. When switching from such a state to the fine bubble generating operation, the state shown in FIG. 3 is obtained, and the hot water that has stagnated in the feed pipe 56 is immediately decompressed by the fine bubble generating means to generate fine bubbles in a short time.

Next, a third embodiment corresponding to the third invention will be described with reference to FIGS. 6 in FIGS.
6 is a three-way valve for switching the flow from the circulation pump 33 to the outflow pipe 38 side and the feed pipe 56 side, and 67 is the feed pipe 5
6 is a flow rate control valve for controlling the flow rate of No. 6. Other configurations are the same as those in FIGS. 1 and 2, and description thereof will be omitted. The operation of this configuration will be described. When fine bubbles are generated, the state shown in FIG. 5 is reached, and the hot water pressurized and dissolved by the circulation pump 33 flows through the feed pipe 56 via the three-way valve 66 and the flow rate control valve 67.
At this time, by restricting the flow rate with the flow rate control valve 67, the pressure on the downstream side of the flow rate control valve 67 changes, the degree of pressure reduction in the fine bubble generation means 35 (not shown) changes, and the amount of fine bubbles changes. .. Although FIG. 6 shows the state when large bubbles are generated,
The hot water discharged from the circulation pump 33 is sent to the outflow pipe 38 via the three-way valve 66 and the large bubble generating means 36 (not shown).
Erupted from.

[0018]

As described above, the bubbly water flow generator of the first invention is a water tank, and a bubble ejecting device provided in the water tank and comprising fine bubble generating means and large bubble ejecting means,
A circulation pump that circulates water in the water tank, a forward pipe that is piped from the discharge side of the circulation pump to the large bubble jetting means, and a feed pipe that is piped from the discharge side of the circulation pump to the fine bubble generating means,
Control means for controlling the flow to the outflow pipe and the feed pipe, a return pipe connecting the water tank and the suction side of the circulation pump, an ejector provided in the bypass passage between the circulation pump's outflow pipe and return pipe, and the suction of the circulation pump. Provided on the side for switching the suction direction to the circulation pump between the ejector side and the return pipe side, the suction pipe connected to the ejector from the upstream side of the switching means, and the ejector and the atmosphere through the air control means. The small air pump can generate the fine bubbles and the large bubbles by opening the feed pipe when the fine bubbles are generated and opening the forward pipe and the feed pipe when the large bubbles are generated. Further, since the warm water discharged from the circulation pump is caused to flow to the large bubble jetting means by both the outflow pipe and the feed pipe, the jetting amount can be increased when the large bubbles are generated.

In the bubbling water flow generator of the second invention, the feed pipe is opened when fine bubbles are generated, the feed pipe is closed when the large bubbles are generated, and the forward pipe is opened. When the hot water in which the gas is dissolved is stagnated and then the operation is switched to the fine bubble generation operation, the hot water that has stagnated in the feed pipe is immediately decompressed by the fine bubble generation means, so that the fine bubbles are generated in a short time. It is something that can be ejected.

In the bubbling water flow generator of the third invention, when the fine bubbles are generated, the flow rate of the fine bubbles is controlled to control the generation amount of the fine bubbles. The degree of decompression at the generation means changes,
The generation amount of fine bubbles can be changed.

[Brief description of drawings]

FIG. 1 is a system configuration diagram showing a case where fine bubbles are generated in a bubbly water flow generator according to a first embodiment of the present invention.

FIG. 2 is a system configuration diagram showing a case where a large bubble is generated in the device.

FIG. 3 is a system configuration diagram showing a case where fine bubbles are generated in the bubbly water flow generator according to the second embodiment of the device.

FIG. 4 is a system configuration diagram showing a case where large bubbles are generated in the device.

FIG. 5 is a system configuration diagram showing a case where fine bubbles are generated in the bubbly water flow generator according to the third embodiment of the device.

FIG. 6 is a system configuration diagram showing a case where a large bubble is generated in the device.

FIG. 7: System configuration diagram of a conventional jet bath device

FIG. 8 is a sectional view of the shuttle valve of the same device.

FIG. 9 is a sectional view of a gas-liquid mixer and a relief valve of the same device.

FIG. 10 is a sectional view of a large bubble generating nozzle of the same device.

[Explanation of symbols]

 33 Circulation pump 34 Water tank (bath) 35 Fine bubble generating means 36 Large bubble generating means 37 Bubble ejecting device 38 Forward pipe 39 Control means (open / close valve) 41 Return pipe 42 Ejector 43 Bypass passage 44 Switching means (three-way valve) 45 Suction pipe 47 air control means (solenoid valve) 49 air introduction means 56 feed pipe

 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Kunio Nakamura 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. 72) Inventor Yuichi Emura 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Kazuo Kubo 1006 Kadoma, Kadoma City Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (3)

[Claims] 1. A water tank, a bubble ejecting device provided in the water tank, comprising fine bubble generating means and large bubble ejecting means, a circulation pump for circulating water in the water tank, and the large bubbles from the discharge side of the circulation pump. A forward pipe that is piped to the ejection means,
A feed pipe connected from the discharge side of the circulation pump to the fine bubble generating means, a control means for controlling the flow to the outflow pipe and the feed pipe, and a return pipe connecting the water tank and the suction side of the circulation pump. And an ejector provided in a bypass passage of the forward pipe and the return pipe of the circulation pump, and a switching unit provided on a suction side of the circulation pump for switching a suction direction to the circulation pump to the ejector side and the return pipe side. The suction pipe is connected to the ejector from the upstream side of the switching means, and the air introducing means is provided through the air control means for the ejector and the atmosphere, and the feed pipe is opened when fine bubbles are generated. A bubble water flow generator that opens the forward pipe and the feed pipe when large bubbles are generated. 2. A bubble water flow generator according to claim 1, wherein the feed pipe is opened when fine bubbles are generated, and the feed pipe is closed and the forward pipe is opened when large bubbles are generated. 3. The bubble water flow generator according to claim 1, wherein the amount of fine bubbles generated is controlled by controlling the flow rate to the feed pipe when fine bubbles are generated.