JP3401812B2 - Bubble water flow generator - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bubbly water flow generator having a function of generating gas and liquid 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, in the pump unit 4 provided with the pump 3 for circulating the hot water 2 in the bathtub 1, the hot water inhaler 6 connected to the suction side conduit 5 of the pump 3 and the discharge side conduit 7 of the pump 3. The nozzle unit 11 is provided with a low pressure jet nozzle 9 and a high pressure jet nozzle 10 which 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, and 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 FIGS.
Is sucked from the inhaler 6 to the pump 3 via the suction side pipe line 5, and then the fine bubbles are jetted from the high pressure jet nozzle 10 from the pump 3 via the discharge side pipe line 7. 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 causes the spring 15 to move.
The conical valve 16 is opened by overcoming the urging force of. 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 pressure-melted to a high pressure by the pump 3, and further melted in the spiral passages 20 and 21, and the discharge-side pipe 7
From the high pressure jet nozzle 10. On the other hand, at the time of the large bubble generation operation, the two-way valve 8 in FIG. 6 is switched, and the hot water from the pump 3 is jetted from the low pressure jet nozzle 9 to the bath 1 (for example, Japanese Patent Publication No. 3-14464).

[0004]

However, in the above-mentioned conventional structure, a large pump is required to pressurize to a high pressure to dissolve the air, so that the cost is high. The present invention solves the above problems and provides a bubbling water flow generator that generates fine bubbles and large bubbles with a small pump, and is capable of stably sucking air even when the installation height of the device changes. It is intended.

Another object of the present invention is to eliminate the unstable operation of the circulation pump due to the air inside the pipe.

[0006]

In order to solve the above-mentioned problems, the present invention circulates water in a water tank, a bubble ejecting device provided in the water tank and comprising fine bubble generating means and large bubble ejecting means. A circulation pump, a bypass passage connecting the discharge side and the suction side of the circulation pump, an ejector provided in the bypass passage, and a forward pipe piped from the discharge side of the circulation pump to the large bubble ejecting means, A feed pipe arranged from the discharge side of the circulation pump to the fine bubble generating means, a return pipe connecting the circulation pump and the water tank, and a suction direction to the circulation pump provided in the return pipe of the ejector. and switching means switches the suction portion side and the return pipe side, a suction tube is plumbed to the ejector from said switching means, said error being disposed in the suction pipe
Pressure control means for maintaining a constant pressure in the negative pressure portion of the ejector
And a bubbly water flow generating device including an air introducing unit that connects the ejector and the atmosphere.

In order to achieve the above-mentioned second object, the present invention also provides a water tank, a bubble ejecting device provided in the water tank, comprising fine bubble generating means and large bubble ejecting means, and circulation for circulating water in the water tank. A pump, a bypass line connecting the discharge side and the suction side of the circulation pump, an ejector provided in the bypass line, a forward pipe connected from the discharge side of the circulation pump to the large bubble jetting means, and a discharge side of the circulation pump. A feed pipe arranged in the fine bubble generating means, a return pipe connecting the circulation pump and the water tank, and a switching means provided in the return pipe for switching the suction direction to the circulation pump to the suction section side and the return pipe side of the ejector, A suction pipe connected from the switching means to the ejector, and a negative pressure portion of the ejector disposed on the suction pipe.
Pressure control means for maintaining a constant pressure and an air introduction means connecting the ejector and the atmosphere, and the bypass passage on the discharge side of the circulation pump and the jet, in which the bypass passage is formed in the longitudinal pipe It is a thing.

[0008]

According to the invention described in claim 1 , the bypass opening / closing means is opened to flow to the ejector during the operation of generating fine bubbles, so that the pressure inside the bypass passage is increased by the pressure increasing action of the ejector. Air is sucked from the pressure section, and the inside of the bypass passage becomes a high-pressure water state in which the air is dissolved. The high-pressure water is ejected while being decompressed by the fine-bubble generating means to generate fine bubbles.
When a large bubble is generated, the bypass opening / closing means is closed to stop the operation of the ejector, and the opening / closing means is opened, so that the water discharged from the circulation pump is jetted from the large bubble jetting means. Further, according to the present invention, the pressure control means arranged in the suction pipe always keeps the pressure of the negative pressure portion of the ejector constant so that the amount of air sucked into the ejector becomes constant.

According to a second aspect of the present invention, the circulation passage is provided with a forward passage on the discharge side of the circulation pump and a bypass passage in which the jet is arranged. Since the air inside moves to the upper part of the vertical pipe and does not remain in the circulation pump, it is always stable even when the circulation pump is restarted.

[0010]

EXAMPLES Hereinafter, describes the original Dzu the first invention and the second of the accompanying drawings an embodiment corresponding to the invention. In FIG. 1 and FIG. 2, 33 is a circulation pump, and the circulation pump 33
From the above to a fine bubble generating means 35 provided in a bath 34 which is a water tank. The feed pipe 36 on the discharge side of the circulation pump 33 is arranged in the vertical direction after exiting from the circulation pump 33. Further, the feed pipe 36 is provided with a two-way valve 37 and a check valve 38 as a bypass opening / closing means. A forward pipe 40 is provided between the two-way valve 37 and the circulation pump 33 via a two-way valve 39 serving as an opening / closing means to a large bubble jetting means 41 provided in the bath 34. On the other hand, a bypass passage 43 is provided between the discharge side and the suction side of the circulation pump 33 via the ejector 42. This bypass 43
Is vertically piped. Negative pressure portion 4 of the ejector 42
4 and a three-way valve 45, which is a switching means arranged on the suction side of the circulation pump 33, are a governor 4 which is a pressure control means.
A suction pipe 47 is connected via 6. Further, an air introduction unit including a check valve 49 for the other negative pressure portion 48 of the ejector 42 and the atmosphere, a constant flow valve 50, and a solenoid valve 51 is provided. An air pipe 52 is provided to the large bubble jetting means 41 via an electromagnetic valve 53. 54 is an arrow showing the flow of fluid, 55 is a fine bubble, and 56 is a large bubble. Reference numeral 57 is a bypass pipe that connects the forward pipe 40 and the feed pipe 36, and is provided with a check valve 58. Reference numeral 59 is a return pipe connected from the bathtub 34 to the circulation pump 33. 6
Reference numeral 0 is a gas-liquid mixing tank arranged in the feed pipe 36.

Next, the operation of the first invention will be described with reference to FIGS. The operation when the minute bubbles are generated will be described with reference to FIG. 1. When the circulation pump 33 is operated in the state of FIG. 1, the warm water discharged from the circulation pump 33 flows through the feed pipe 36 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 59 is sucked into the suction pipe 4.
7, the electromagnetic valve 51 is opened, and the air is sucked into the ejector 42 via the constant flow valve 50 and the check valve 49. When hot water and air are sucked in this way, the pressure on the suction side of the circulation pump 33 increases, and the pressure on the discharge side of the circulation pump 33 also increases, so that high-pressure hot water in which air is dissolved is generated from the circulation pump 33. Bypass passage 43, feed pipe 36, gas-liquid mixing tank 6
0, and is sent to the fine bubble generating means 35. The hot water sent to the fine bubble generating means has a small cross section flow path (not shown).
It is suddenly decompressed by being ejected from. As a result, the air that was dissolved at high pressure becomes fine bubbles and becomes a bathtub 3.
It is ejected to 4. Governor 4
Due to the action of 6, the pressure of the negative pressure portion 44 of the ejector 42 is always constant even if the installation height of the circulation pump 33 changes with respect to the water tank 34. Therefore, the amount of air sucked into the ejector 42 from the air introduction unit including the check valve 49, the constant flow valve 50, and the electromagnetic valve 51 is stably supplied at a constant amount.

Next, the operation when a large bubble is ejected will be described with reference to FIG. When the circulation pump 33 is operated in FIG. 2, the warm water discharged from the circulation pump 33 passes through the two-way valve 39 and the feed pipe 4
It flows through 0 and is sent to the large bubble jetting means 41. The sent hot water is jetted from the large bubble jetting means 41. Due to the negative pressure due to the water flow at this time, air is generated by the solenoid valve 53 and the air pipe 52.
Is sucked through and becomes large bubbles and is ejected to the bathtub 34. At this time, part of the hot water discharged from the circulation pump 33 flows from the middle of the outflow pipe 40 to the feed pipe 36 via the bypass pipe 57.

Next, the operation corresponding to the second invention will be described with reference to FIGS.
This will be described with reference to FIG. Circulation pump 3 during fine bubble operation
Although air is circulated in the state of being melted in 3, the bypass passage 43, and the feed pipe 36, when the operation is stopped, the pressure in the circuit drops and bubbles are generated in the circuit. However, in this embodiment, since the bypass passage is configured as the vertical pipe, the air in the circulation pump moves to the upper portion of the vertical pipe and does not remain in the circulation pump when the fine bubble operation is stopped. When the circulation pump is restarted, it can always be operated stably.

[0014] Next, will be described with reference to FIG. 3 another embodiment.
Reference numeral 61 is a heat exchanger provided downstream of the two-way valve 39 of the outflow pipe 40, and 62 is a burner. The heat exchanger 61 and the burner 62 constitute heating means. Reference numeral 63 is a solenoid valve that opens and closes a pouring pipe 64 into the bath 34.
A pipe from a water heater (not shown) is connected to the pouring pipe 64. Reference numeral 65 is a bypass pipe, and 66 is an electromagnetic valve which is an opening / closing means. Other configurations are similar to those in FIGS. 1 and 2, and description thereof will be omitted.

[0015] to the next, to explain the operation. The operation when the fine bubbles are generated is similar to that of FIG. During the large bubble operation, the warm water discharged from the circulation pump 33 is the heat exchanger 61.
It is sent to the large bubble jetting means 41 via. Therefore, the hot water temperature can be raised while circulating the water in the bathtub 34. Further, by closing the two-way valve 37 and opening the electromagnetic valve 66, the hot water discharged from the circulation pump 33 can be caused to flow through the bypass pipe 65 and be sent to the large bubble jetting means 41. At this time, a large flow rate is jetted from the large bubble jetting means.

[0016]

As described above, according to the bubbling water flow generator of the first invention, it is possible to generate fine bubbles and large bubbles with a small pump. Further, by making the pressure of the negative pressure portion of the ejector constant, a fixed amount of air can be sucked even if the installation height of the circulation pump changes with respect to the bathtub, and fine bubbles can be stably obtained. .

According to the bubbly water flow generator of the second invention ,
After stopping the fine fine air bubbler operation, it is possible to operate the circulation pump is stably even when resume operation.

[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 when large bubbles are generated in the device.

FIG. 3 is a system configuration diagram when a large bubble is generated in another embodiment of the present invention.

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

FIG. 5 is a sectional view of the shuttle valve of the same device.

FIG. 6 is a sectional view of a gas-liquid mixer and a relief valve of the same device.

FIG. 7 is a cross-sectional view of a large bubble generating nozzle of the same device.

[Explanation of symbols]

33 Circulation pump 34 Water tank 35 Means for generating fine bubbles 36 feed pipe 40 Forward pipe 41 Large bubble ejection means 42 ejector 43 Bypass 45 switching means 46 Pressure control means 47 Suction tube 49 Check valve (air introduction means) 50 Constant flow valve (air introduction means) 51 Solenoid valve (air introduction means) 59 Return pipe

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kunio Nakamura 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Tsunehiro Yoshida 1006 Kadoma, Kadoma City, Osaka 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 Matsushita Electric Industrial Co., Ltd. (56) References JP-A-4-187153 (JP, A) JP-A-4-279164 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) A61H 23/00, 33/02 A47K 3/00

Claims (2)

(57) [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 a discharge side and a suction side of the circulation pump. A bypass passage to be connected, an ejector provided in the bypass passage, a forward pipe piped from the discharge side of the circulation pump to the large bubble jetting means, and a discharge pipe of the circulation pump to the fine bubble generation means. A feed pipe, a return pipe connecting the circulation pump and the water tank, a switching means provided in the return pipe for switching the suction direction to the circulation pump to the suction section side of the ejector and the return pipe side, and a suction tube which is plumbed to the ejector from switching means, said error being disposed in the suction pipe
Pressure control means for maintaining a constant pressure in the negative pressure portion of the ejector
And a bubbly water flow generator comprising: the ejector and an air introducing unit that connects the atmosphere. 2. 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 a discharge side and a suction side of the circulation pump. A bypass passage to be connected, an ejector provided in the bypass passage, a forward pipe piped from the discharge side of the circulation pump to the large bubble jetting means, and a discharge pipe of the circulation pump to the fine bubble generation means. A feed pipe, a return pipe connecting the circulation pump and the water tank, a switching means provided in the return pipe for switching the suction direction to the circulation pump to the suction section side of the ejector and the return pipe side, and A suction pipe that is piped from the switching means to the ejector, and the suction pipe that is disposed on the suction pipe.
Pressure control means for maintaining a constant pressure in the negative pressure portion of the ejector
And an air introduction unit that connects the ejector and the atmosphere, and the bubbling water flow generator in which the bypass passage on the discharge side of the circulation pump in which the forward pipe and the jet are arranged is a vertical pipe.