JPH05305118A - Bubble water flow generator - Google Patents

Abstract

PURPOSE:To ensure a circulation flow rate by running the circulation flow rate all from a large bubble jetting means 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 through a feed pipe 56 to decompress so that fine bubbles are generated. In the generation of large bubbles, a three-way valve 44 is switched so as to let hot water of a return pipe 41 flow through the circulation pump 33 and an opening/closing valve 39 is opened. Under such a condition, when the circulation pump 33 is put into action, the hot water delivered from the circulation pump 33 does not flow to the suction side of the circulation pump 33 with a check valve 46 provided on a suction pipe 4 but to a large bubble generation means 36 from an outgoing pipe 38 and the feed pipe 56.

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 bath 1, a hot water inhaler 6 connected to a suction side conduit 5 of the pump 3 and a discharge side conduit 7 of the pump 3. The nozzle unit 11 includes a low-pressure jet nozzle 9 and a high-pressure jet nozzle 10 that are branched and connected via a two-way valve 8. A jet passage 12 is provided in the suction side pipeline 5 of the pump 3, and a shuttle valve 13 is provided from the discharge side pipeline 7 to the jet passage 12.
The branch pipe line 14 is piped through. The shuttle valve 13 includes a conical valve 16 biased by a spring 15,
The conical valve 16 includes a valve rod 17, an air intake passage 18, and an air passage 19. On the other hand, the high pressure jet nozzle 10 includes a gas-liquid mixer 22 having spiral passages 20 and 21 alternately, a relief valve 2 having a valve body 24 and a jet discharge port 25 biased by a spring 23.
It is composed of 6. Further, the low-pressure jet nozzle 9 includes a hot water flow passage 27 and an air inflow passage 28 formed on the outer periphery of the flow passage 27. A thin passage 29, a wide chamber 30, and a nozzle 31 are provided downstream of the flow passage 27. It is configured. 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 provides a bubble water flow generator that generates fine bubbles and large bubbles with a small pump, and causes all water discharged from the pump during large bubble operation to flow into the large bubble jetting means. This is intended to ensure the circulation flow rate during large bubble operation.

[0005]

In order to achieve the above-mentioned object, the present invention circulates water in a water tank, a bubble ejecting device provided in the water tank, comprising fine bubble generating means and large bubble ejecting means, and water in the water tank. Circulation pump, a forward pipe connected from the discharge side of the circulation pump to the bubble jetting device, a return pipe connecting the water tank and the suction side of the circulation pump, and a bypass of the forward pipe and the return pipe of the circulation pump. An ejector provided in the passage, a switching means provided on the suction side of the circulation pump, for switching the suction direction to the circulation pump to the ejector side and the return pipe side, and from the upstream side of the switching means to the ejector. A suction pipe that is piped, a check valve that is provided on the suction pipe, and an air introduction unit that is provided between the ejector and the atmosphere through an air control unit. .

[0006]

According to the present invention, with the above configuration, the suction direction to the circulation pump is switched to the ejector side,
By the suction and pressurizing action of the ejector, the water in the water tank is sucked from the suction pipe, and the high-pressure water in which the air is dissolved is discharged to the circulation pump discharge side by sucking the air from the air introduction means. The high pressure water is decompressed by the fine bubble generation means to generate fine bubbles, and the check valve is installed in the suction pipe connected to the ejector pipe from the upstream side of the switching means, so that the water discharged from the circulation pump during the large bubble operation is Prevents short circuit to the circulation pump via the suction pipe and secures the circulation flow rate during large bubble operation.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIG. 1 and FIG. 2, 33 is a circulation pump, and from the circulation pump 33 is a bath 3 which is a water tank.
A forward pipe 38 is connected to a bubble jetting device 37 having a fine bubble jetting device 35 and a large bubble jetting device 36 provided in FIG. Reference numeral 39 is an on-off valve provided in the outflow pipe 38, and 40 is a heat exchanger. Circulation pump 3 from bath 34
A return pipe 41 is connected to the pipe 3. A bypass passage 43 provided with an ejector 42 is provided from the outflow pipe 38 of the circulation pump 33 to the return pipe 41. Reference numeral 44 indicates the suction direction to the circulation pump 33 on the ejector 42 side and the return pipe 4 side.
It is a three-way valve that is switching means for switching to the 1 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 will be described with reference to FIGS.
When fine bubbles are generated, as shown in FIG.
The valve body 50 and the valve seat 51 of the
Make up only. 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 circulation pump 33
The hot water flowing out of the flow path flows to the bypass pipe 43 as well as to the feed pipe 56. 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 circulation pump 3
As the pressure on the suction side of 3 increases, 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 the small cross section flow path 5
By being jetted from 2, the pressure is sharply reduced. 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, 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 opening / closing valve 39 is the forward pipe 38.
Has been established. When the circulation pump 33 is operated in such a state, the warm water discharged from the circulation pump 33 is heated by the heat exchanger 40.
And is sent to the large bubble jetting means 36 via. The sent hot water is jetted from the water jet nozzle 57. At this time, air is sucked from the air introducing means 49 due to the negative pressure at the time of jetting. The jet from the water jet nozzle 57 shears this air and
Ejected into the bath 34 as air bubbles of ~ 5 mm. When large bubbles are generated, the warm water discharged from the circulation pump 33 is the outflow pipe 38.
Then, it is sent only to the feed pipe 56.

[0010]

As described above, the bubble water flow generator of the present invention includes a water tank, a bubble ejecting device provided in the water tank, which includes fine bubble generating means and large bubble ejecting means, and a circulation for circulating water in the water tank. A pump, a forward pipe from the discharge side of the circulation pump to the bubble jetting device, a return pipe connecting the water tank and the suction side of the circulation pump, and an ejector provided in the bypass passage of the forward and return pipes of the circulation pump. And switching means provided on the suction side of the circulation pump for switching the suction direction to the circulation pump to 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 suction pipe. By configuring the check valve and the ejector and the air with the air introduction means provided via the air control means, it is possible to generate fine bubbles with a small pump, and to reduce the Door of can be achieved. Also, by providing a check valve in the suction pipe for hot water discharged from the pump during large bubble operation, there is no short circuit to the circulation pump via the suction pipe, and all flows to the large bubble jetting means, so it is a small pump. The flow rate during large bubble operation can be secured.

[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 an 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 of a conventional jet bath device.

FIG. 4 is a sectional view of a shuttle valve of the same device.

FIG. 5 is a sectional view of a gas-liquid mixer and a relief valve of the same device.

FIG. 6 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 Micro Bubble Generating Means 36 Large Air Bubble Generating Means 37 Bubble Ejecting Device 38 Forward Pipe 41 Return Pipe 42 Ejector 43 Bypass Passage 44 Switching Means (Three-way Valve) 45 Suction Pipe 46 Check Valve 47 Air Control Means (solenoid valve) 49 Air introduction means

 ─────────────────────────────────────────────────── ─── 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 (1)

[Claims] 1. A water tank, a bubble jetting device provided in the water tank, comprising fine bubble generating means and large bubble jetting means, a circulation pump for circulating water in the water tank, and the bubble jetting from a discharge side of the circulation pump. A forward pipe piped to the device, a return pipe connecting the water tank and the suction side of the circulation pump, an ejector provided in the bypass passage of the circulation pipe of the circulation pipe, and an intake side of the circulation pump. Switching means provided for switching the suction direction to the circulation pump to the ejector side and the return pipe side, a suction pipe piped from the upstream side of the switching means to the ejector, and a reverse pipe provided on the suction pipe. A bubbly water flow generating device comprising a stop valve and an air introducing unit provided with the ejector and the atmosphere through an air control unit.