JP2976549B2 - Bubble bath equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art A conventional bubble bath apparatus is shown in FIG. That is, the hot water from the bathtub 1 is sucked by the water pump 2, and is spouted from the channel outlet 3 into the bathtub 1. At this time, the amount of blown air is adjusted by the air suction mechanism 4. As a result, a bubble water stream is ejected from the flow path outlet 3. On the other hand, in order to raise the temperature of the hot water inside the bathtub 1, the gas is burned by the gas burner 6 by flowing the heating flow path 5 to raise the temperature of the hot water. (For example, Japanese Utility Model Publication No. 2-12522)

[0003]

However, in the above-mentioned conventional structure, the bubble water flow ejected from the flow path outlet 3 is 3 to 5 times.
There was a drawback that the bubble diameter could not be further varied with only bubbles of mm. In addition, since there is only one kind of air bubbles, there was a little unsatisfactory in commercial properties.

An object of the present invention is to provide a bubble bath apparatus having a function of generating bubbles of 3 to 5 mm and fine bubbles of several tens of microns from one jet nozzle. .

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a heat exchanger for a bath, an outgoing pipe in which an outlet of the bath heat exchanger and an upstream side of a jet nozzle provided in the bath are piped. A return pipe piped from the suction side of the bath to the inlet of the bath heat exchanger, a circulation pump disposed in the return pipe, a branch circuit communicating the discharge side and the suction side of the circulation pump, and a branch circuit. An air supply pipe arranged in the negative pressure section of the ejector via an air control valve, a circulation circuit communicating the negative pressure section of the ejector with the suction side of the circulation pump, and a return pipe. A switching valve for switching the flow of water between the circulation pump side and the circulation circuit side, and a pressure reducing switching valve for switching the flow sent from the circulation pump to the side of the bath heat exchanger and the side of the ejector.

[0006]

According to the present invention, when air bubbles of 3 to 5 mm are generated by the above-described structure, the bath water is circulated through the outgoing pipe and the return pipe by the circulating pump, and air is jetted from the jet nozzle through the air control valve. To generate bubbles of the above size. In addition, when generating microbubbles of several tens of microns, the hot water flows to the bath heat exchanger by switching the pressure reducing switching valve on the discharge side of the circulation pump and the switching valve on the suction side of the circulation pump, and also on the ejector side. The ejector sucks the air from the air control valve and the hot water in the bathtub from the circulation circuit by the suction action of the ejector generated here, and makes the discharge side of the circulation pump high pressure. In this state, the air that was dissolved in the high pressure state is released as fine bubbles of several tens of microns by flowing from the pressure reducing switching valve on the discharge side of the circulation pump to the bath heat exchanger while rapidly reducing the pressure. . These fine bubbles flow from the jet nozzle to the inside of the bath, causing cloudiness.

[0007]

An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 and 2, reference numeral 7 denotes a bath heat exchanger. The bath heat exchanger 7 and a jet nozzle 10 of a jet nozzle 9 provided in the bath 8 are connected by a pipe 11. A return pipe 13 is provided from the suction side 12 of the jet nozzle 9 to the bath heat exchanger 7.
The return pipe 13 is provided with a circulation pump 14.
A branch circuit 18 is piped from the discharge side 15 to the suction side 16 of the circulation pump 14 via an ejector 17.
19 is a pressure reduction switching valve. The negative pressure section 20 and the suction side 16 of the ejector 17 are connected to a circulation circuit 22 via a switching valve 21. On the other hand, air control valves 23, 24, 25 are connected to the negative pressure section 20 via an air supply pipe 26. The air supply pipe 26 is also connected to the jet nozzle 9. Orifices 27, 28 and 29 can adjust the amount of air by changing the orifice diameter. Reference numeral 30 denotes a hot water supply heat exchanger, and reference numeral 31 denotes a hot water supply pipe for sending hot water from the hot water supply heat exchanger 30 to the inlet side of the bath heat exchanger 7. 32 is a solenoid valve. Reference numeral 33 denotes an operation panel. By operating the operation panel 33, the circulating pump 14 and the air control valve 2 are controlled via a controller 34.
3, 24 and 25 are operated. 35 is hot water, and 36 is an arrow indicating the flow of hot water.

Next, the operation of the above configuration will be described.
First, a case where bubbles of 3 to 5 mm are generated will be described with reference to FIG. In the drawing, hot water discharged from a circulation pump 14 is supplied to a pressure reducing switching valve 19, a bath heat exchanger 7,
1, and is jetted from the jet nozzle 10 of the jet nozzle 9 to the bathtub 8. At this time, a negative pressure is generated by the ejection action of the ejection nozzle 10, and the air sucked from the air control valve 25 in the open state is supplied to the jet nozzle 9 through the air supply pipe 26.
And into the bathtub 8 as bubbles of 3 to 5 mm.

Next, the operation of generating fine bubbles of several tens of microns will be described with reference to FIG. At this time, the pressure reducing switching valve 19 on the discharge side 15 of the circulation pump 14 is switched so as to flow to the bath heat exchanger 7 side and the ejector 17 side. The valve opening toward the bath heat exchanger 7 is configured to be extremely small. Further, the switching valve 21 is switched so as to flow toward the circulation circuit 22. When the circulation pump 14 is operated in such a state, the discharged hot water flows to the bath heat exchanger 7 and also to the branch circuit 18. At this time, the hot water inside the bath 8 is sucked into the ejector 17 via the return pipe 13 and the circulation circuit 22 by the suction action of the ejector 17. At this time, air is also sucked into the ejector 17 through the air control valve 23 having the orifice 27 in the minimum throttle state. By suctioning the hot water inside the bath 8 by the ejector 17 in this manner, the pressure on the suction side 16 of the circulation pump 14 increases. As a result, the pressure on the discharge side 15 of the circulation pump 14 is substantially equal to the pressure on the suction side 16 plus the pressure close to the closing pressure of the circulation pump 14, and the pressure on the discharge side 15 of the circulation pump 14 is in a high pressure state. Because of the high pressure state, the air sucked from the air control valve 23 is dissolved in the hot water on the discharge side 15 of the circulation pump 14. Here, since the degree of opening of the pressure reducing switching valve 19 toward the bath heat exchanger 7 is extremely small, a large pressure difference occurs before and after the pressure reducing switching valve 19 when hot water passes through the pressure reducing switching valve 19. Due to this decompression action, the dissolved air becomes fine bubbles of several tens of μ, and is blown out from the blowout nozzle 10 to the bath 8 through the bath heat exchanger 7 and the outflow pipe 11. When these fine bubbles are jetted into the bath 8, the bath 8
Turbid inside.

[0010]

As described above, the bubble bath apparatus according to the present invention comprises a heat exchanger for a bath, an access pipe having an outlet of the heat exchanger for a bath and an upstream side of a jet nozzle provided in the bath. A return pipe disposed from the suction side of the bath to the entrance of the bath heat exchanger; a circulation pump disposed in the return pipe; and a branch communicating the discharge side and the suction side of the circulation pump. A circuit, an ejector disposed in the branch circuit, an air supply pipe disposed in a negative pressure portion of the ejector via an air control valve, and a negative pressure portion of the ejector and a suction side of the circulation pump. A communicating circulation circuit, a switching valve for switching the flow of the return pipe between the circulation pump side and the circulation circuit side, and switching a flow sent from the circulation pump between the bath heat exchanger side and the ejector side. With pressure reducing switching valve By forming, it is possible to generate a bubble of 3 to 5 mm, a bubble of a few 10 [mu]. In addition, the cost can be reduced because it can be realized by one circulation pump.
Two types of bubble baths are possible, which has the effect of increasing the commercial value.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram when a large bubble is generated in a bath apparatus according to an embodiment of the present invention.

FIG. 2 is a system configuration diagram of the apparatus when fine bubbles are generated.

FIG. 3 is a system configuration diagram of a conventional bath apparatus.

[Explanation of symbols]

 7 Bath Heat Exchanger 8 Bath 9 Jet Nozzle 10 Jet Nozzle 11 Outgoing Pipe 13 Return Pipe 14 Circulation Pump 17 Ejector 18 Circulation Circuit 19 Depressurization Switching Valve 20 Negative Pressure Unit 21 Switching Valve 23,24,25 Air Control Valve

Claims (1)

(57) [Claims] 1. A bath, a bath heat exchanger for heating water in the bath, an outgoing pipe in which an outlet of the bath heat exchanger and a jet nozzle provided in the bath are piped, A return pipe piped from the suction side to the entrance of the bath heat exchanger, a circulation pump disposed on the return pipe, and a branch circuit communicating the discharge side and the suction side of the circulation pump,
An ejector disposed in the branch circuit, an air supply pipe disposed in a negative pressure portion of the ejector via an air control valve, and a circulation communicating the negative pressure portion of the ejector and a suction side of the circulation pump. A circuit, a switching valve for switching a flow from the return pipe between the circulation pump side and the circulation circuit side, and a decompression for switching a flow sent from the circulation pump to the bath heat exchanger side and the ejector side. A bubble bath device consisting of a switching valve.