JP3401811B2 - 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, there is a problem in that the air which is pressurized to a high pressure and melts air is not dissolved but becomes large bubbles and is easily ejected from the high-pressure ejection nozzle. The present invention has been made to solve the above problems, and an object of the present invention is to provide a bubbling water flow generating device that does not eject undissolved excess air as large bubbles from the fine bubble generating means.

Further, the present invention aims at reducing the volume of the gas-liquid mixing tank.

[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 arranged from the discharge side of the circulation pump to the large bubble jetting means. A feed pipe arranged from the discharge side of the circulation pump to the fine bubble generating means, and a gas-liquid mixing tank arranged in the feed pipe,
A return pipe that connects the circulation pump and the water tank, a switching unit that is provided in the return pipe and that switches the suction direction to the circulation pump to the suction unit side of the ejector and the return pipe side, and the ejector from the switching unit. A gas-liquid mixing tank , and an air introducing means connecting the ejector and the atmosphere.
This is a bubbly water flow generator with a floating body inside the chamber .

Further, in order to achieve the above second object, the present invention further comprises, inside the gas-liquid mixing tank, a water level detecting means capable of detecting water levels at two points above and below, and an opening / closing means for discharging air from the gas-liquid mixing tank. The valve is configured so that the on-off valve is opened by the signal of the water level detecting means when the water level in the gas-liquid mixing tank reaches the lower side, and the on-off valve is closed when the water level reaches the upper side.

[0008]

According to the present invention, by the above-described structure, during the operation of generating fine bubbles, by opening the bypass opening / closing means and flowing the same to the ejector, the pressure in the bypass passage is increased by the pressure increasing action of the ejector, and the air is discharged from the negative pressure portion of the ejector. Is sucked in and the high pressure water in which the air is dissolved is formed in the bypass passage. Micro bubbles are generated by ejecting this high-pressure water while decompressing it with the micro-bubble generating means, but by absorbing large bubbles of excess air generated in high-pressure water within the micro-bubble operating time range into the gas-liquid mixing tank. The large bubbles do not jet from the fine bubble generating means.

Further, according to the present invention, by providing the float in the gas-liquid mixing tank, it is possible to prevent the generation of large bubbles in the gas-liquid mixing tank.

Further, according to the present invention, since the water level in the gas-liquid mixing tank is detected and the air is forcibly discharged so as to secure the water level within a certain range, the gas-liquid mixing tank becomes small.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment corresponding to the first invention will be described below with reference to the accompanying drawings. 1-2,
A circulation pump 33 is provided with a feed pipe 36 from the circulation pump 33 to a fine bubble generating means 35 provided in a bath 34 which is a water tank. The feed pipe 36 has a two-way valve 3
7 and a check valve 38 are provided. Further, from between the two-way valve 37 and the circulation pump 33, a forward pipe 40 is provided via a two-way valve 39.
Is connected to the large bubble jetting means 41 provided in the bathtub 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. A suction pipe 47 is connected to the negative pressure portion 44 of the ejector 42 and a three-way valve 45, which is a switching means arranged on the suction side of the circulation pump 33, via a throttle portion 46. 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. Reference numeral 60 is a gas-liquid mixing tank arranged in the feed pipe 36, 61 is a water surface, and 62 is a water flow.

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. At this time, the flow velocity in the gas-liquid mixing tank 60 becomes slow, surplus air accumulates in the gas-liquid mixing tank 60, and the water surface 61 drops with the operating time. However, since the gas-liquid mixing tank 60 has a volume that absorbs the excess air generated during the fine bubble operation time set separately by the control sequence, the excess air does not flow to the fine bubble generation means during the fine bubble operation time. Absent.

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, a second embodiment corresponding to the first invention will be described with reference to FIG. 63 is a float provided in the gas-liquid mixing tank 60. Other configurations are shown in FIGS.
The description is omitted here.

Next, the operation when the fine bubbles are generated in the first invention will be described. High-pressure water that has been pressurized and dissolved is circulated in the bypass passage 43, and this high-pressure water is sent from the feed pipe 36 to the fine bubble generation means 35 via the check valve 38 and the gas-liquid mixing tank 60. At this time, the water flow 62 flowing into the gas-liquid mixing tank 60 falls on the upper surface of the float 63. Therefore, no bubbles are generated on the water surface 61 due to the drop of the water flow 62. Large bubbles do not flow to the fine bubble generating means.

Next, a third embodiment corresponding to the second invention will be described with reference to FIG. Reference numeral 64 is a water level detecting means provided in the upper part of the gas-liquid mixing tank 60, 65 is a water level detecting means provided in the lower part, and 66 is a solenoid valve. Other configurations are the same as those in the case of FIG. 1, and the description thereof will be omitted.

Next, the operation of the second invention will be described.
The operation when the fine bubbles are generated is basically the same as that in FIG. 1, but the differences are as follows. That is, when the water level in the gas-liquid mixing tank 60 falls and reaches the water level detecting means 65, the electromagnetic valve 66 is opened and the air in the gas-liquid mixing tank 60 is discharged. When discharged, the water level rises and reaches the water level detection means 64, and further the electromagnetic valve 66 is closed to fill the hot water in the gas-liquid mixing tank 60 and the performance for storing excess air is restored.

[0018]

As described above, according to the bubbling water flow generator of the first aspect of the present invention, the excess air does not generate as large bubbles in the gas-liquid mixing tank during the fine bubble generating operation.
Large bubbles can be stably obtained without the large bubbles flowing from the fine bubble generating means to the bath.

The bubbly water flow generator of the second invention comprises a gas-liquid mixing tank, water-level detecting means capable of detecting water levels at upper and lower two points in the gas-liquid mixing tank, and opening / closing for discharging air from the gas-liquid mixing tank. A gas-liquid mixing tank is constructed by forming a valve and opening and closing the on-off valve with a signal from the water level detection means when the water level in the gas-liquid mixing tank reaches the lower side and closing the opening and closing valve when the water level reaches the upper side. The volume of can be reduced.

[Brief description of drawings]

FIG. 1 is a system configuration diagram showing a case where fine bubbles are generated in a gas-liquid water flow generator according to a first 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 of the bubbling water flow generator according to the second embodiment of the present invention when fine bubbles are generated.

FIG. 4 is a system configuration diagram of the bubbling water flow generator according to the third embodiment of the present invention when fine bubbles are generated.

FIG. 5 is a system configuration diagram of a conventional jet bath device.

FIG. 6 is a sectional view of the shuttle valve of the same device.

FIG. 7 is a sectional view of a gas-liquid mixer and a relief valve of the same device.

FIG. 8 is a 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 44 Suction side 45 switching 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 60 gas-liquid mixing tank

─────────────────────────────────────────────────── ─── 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-4-279164 (JP, A) JP-A-1-230358 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61H 23/00, 33/02

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, and a gas-liquid mixing tank arranged in the feed pipe,
A return pipe that connects the circulation pump and the water tank, a switching unit that is provided in the return pipe and that switches the suction direction to the circulation pump to the suction unit side of the ejector and the return pipe side, and the ejector from the switching unit. A gas-liquid mixing tank , and an air introducing means connecting the ejector and the atmosphere.
A bubbly water flow generator with a floating body inside . 2. A gas-liquid mixing tank is provided with water level detecting means for detecting water levels at upper and lower two points, and an on-off valve for discharging air from the gas-liquid mixing tank, wherein the water level in the gas-liquid mixing tank is low. The bubbling water flow generator according to claim 1, wherein when the water level reaches the upper side, the on-off valve is opened by a signal of the water level detecting means, and when the water level reaches the upper side, the on-off valve is closed.