JP2966628B2 - Bubble tub - 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 generating bath having a bubble nozzle for spraying hot water mixed with air bubbles. The present invention relates to a bathtub structure for preventing noise caused by backflow of bathwater into a supply pipe.

[0002]

2. Description of the Related Art In a conventional bubble generating bath, a bath hot water circulation passage is interposed between a bathtub main body and a circulation pump unit having flow path opening / closing valves for back and feet installed outside the bathtub main body. Then, the hot water from the circulating pump is circulated through the nozzle water supply pipe to the back and foot bubble nozzles attached to the bathtub body, and air is supplied from the air supply pipe to each bubble nozzle to remove air bubbles. It is a structure to spray hot water. As the flow path on-off valve, for example, a ball valve shown in FIG.
1 is rotated by 90 degrees by a motor M to fully open or close the valve hole 62 with respect to the flow path. By selectively opening and closing the back / foot nozzle water supply pipes 3 and 4 shown in FIG. 7 using the flow path opening / closing valve 60, for example, the injection from the back bubble nozzle 5 is stopped, and the foot bubble nozzle One-sided operation using only 6 can be performed.

[0003]

However, in the above-mentioned conventional bathtub structure, when the one-side operation shown in FIG. 7 is performed, for example, when the flow path opening / closing valve 60 (FIG. 6) of the back nozzle water supply pipe 3 is closed, The supply of bath water to the air bubble nozzle 5 is completely stopped, and no negative pressure is generated in the air bubble nozzle 5. Therefore, the hot water in the bathtub instantaneously flows backward in the air supply pipe 8 in the direction of the arrow A in FIG. Furthermore, both bubble nozzles 5, 6 for the back and feet
Are communicated with each other through one system of air supply pipe 8, so the negative pressure in the bubble nozzle for foot 4 increases the reverse flow rate of bath water into the air supply pipe 8. As a result, the air sucked from the air suction port 7 and the backflowing bath water are forcibly mixed in the vicinity of the branch portion of the air supply pipe 8, and this causes noise. Such noise reverberated in the bathroom,
There was a problem of giving bathers discomfort.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and in the case where a plurality of bubble nozzles are partially used, backflow of bath water into an air supply pipe is prevented to prevent noise generation. It is an object of the present invention to provide an air bubble generation bathtub.

[0005]

In order to solve the above-mentioned problems, the present invention relates to a plurality of bubble nozzles provided at a plurality of locations of a bathtub main body, and a method of transferring bath water circulated from a circulation pump to each of the bubble nozzles. A plurality of nozzle water supply pipes for supplying air to the bath water jetted from the bubble nozzles which are branched and connected to the respective bubble nozzles, and respectively inserted into the respective nozzle water supply pipes. A plurality of flow passage opening / closing valves for opening / closing the flow passage of the nozzle water supply pipe, wherein the flow passage opening / closing valve is configured to leak the bath water having a flow rate smaller than the flow rate in the closed state to the bubble nozzle side in the open state. It has a passage.

[0006]

According to the present invention, a flow path opening / closing valve is inserted into a nozzle water supply pipe individually communicating with a plurality of bubble nozzles, and a flow rate of the flow path opening / closing valve is smaller in the closed state than in the open state. A leak path for supplying the hot water to the bubble nozzle side is provided, so that even when the flow path opening / closing valve is closed, a required amount of hot water is supplied to the nozzle water supply pipe through the leak path, thereby closing. Negative pressure is also generated in the bubble nozzle corresponding to the flow path opening / closing valve, and backflow of bath water into the air supply pipe is prevented. Therefore, for example, even when any one of the plurality of bubble nozzles is used, there is no risk of mixing the air and the bath water in the air supply pipe as in the related art,
There is no noise.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 2 is an overall perspective view of the bubble generating bathtub. The bubble generating bathtub is provided between the bathtub body 1, the circulation pump unit 2 installed outside the bathroom, and the bathtub body 1 and the circulation pump unit 2. Bath circulation path B.
Each side nozzle of the bathtub body 1 has a bubble nozzle 5 for back and foot.
(FIG. 3), 6 are attached, and the flange 1a of the bathtub body 1 is attached.
, A pair of shoulder showers 10 is attached. The flange 1a, the air inlet 7 of the air supply pipe 8, a remote control light receiving unit 12, selector switch SW ₁ for turning on and off operation of the bubble nozzles 5,6, the switch SW ₂ for opening and closing the discharge valve of the bathtub floor And so on.

Further, a suction portion 1 b is provided on a side wall of the bathtub body 1, and the suction portion 1 b communicates with a suction side of the circulation pump unit 2 via a suction pipe 30. The discharge side of the circulation pump unit 2 communicates with the nozzle 10a of the shower 10 for shoulder support via the shower water supply pipe 9 for shoulder support,
On the other hand, they are individually connected to the bubble nozzles 5 and 6 via nozzle water supply pipes 3 and 4 for the back and feet. An air supply pipe 8 having an air suction port 7 is branched and connected to these bubble nozzles 5 and 6. In this air supply pipe 8, branch portions 8b and 8c of a pipe main body 8a accommodating a muffling and non-return filter 31 (FIG. 5) are individually connected to bubble nozzles 5 and 6, respectively. The water supply pipes 3, 4, 9 and the suction pipe 30 constitute a bath water circulation path B.

On the other hand, as shown in FIG. 3, the circulating pump unit 2 includes a circulating pump 15 for circulating bath water, a flow control valve 16 for controlling a circulating flow rate, and a back / foot / shoulder flow. It comprises a road opening / closing valve 17, 18, 19 and a control unit 20 for controlling the opening / closing of each of the valves 16-19. As the back / foot flow opening / closing valves 17 and 18, for example, ball valves shown in FIG. 1A are used. This ball valve is driven by a motor M to 90
The valve body 71 includes a main body 73 for opening, and a valve box 72 for housing the valve body 71.
And a closing leak passage 74 are formed. The leak passage 74 is orthogonal to the main passage 73, and its hole diameter d is set smaller than the hole diameter D of the main passage 73. The leak passage 74 supplies the bath water at a flow rate smaller than the flow rate in the open state to the flow path in the closed state of the valve body 71 to prevent the bath water from flowing back into the air supply pipe 8. It has the function of generating pressure in the corresponding bubble nozzle.

The control unit 20 shown in FIG.
Stepping motor (not shown) for adjusting the opening of 19
And a remote control 26 as shown in FIG.
Is transmitted to the control unit 20 via the remote control light receiving unit 12, and various variations such as selection of the operation pattern of each valve 16 to 19, adjustment of the strength of the jet injected from each nozzle, frequency adjustment of the jet change, etc. Is obtained.

Next, a description will be given of a one-side operation of the bathtub, for example, a case where only the foot bubble nozzle 6 is used without using the back bubble nozzle 5 and the shoulder shower 10. The circulating pump 15 from the suction part 1b of the bathtub shown in FIG.
The bath water sucked into the inside is branched to the foot / back / shoulder flow path opening / closing valves 17 to 19 via the opened flow control valve 16. Here, by setting the back channel opening / closing valve 17 to the closed state in FIG. 1C and the foot channel opening / closing valve 18 to the open state in FIG. A large amount of bath water is circulated and supplied through the main passage 73 (FIG. 1), and the air from the air supply pipe 8 is mixed as air bubbles by the negative pressure generated in the bubble nozzle 6 for the foot. Is sprayed as hot water with air bubbles. On the other hand, the back bubble nozzle 5
, A required amount of bath water is supplied from the leak passage 74 (FIG. 1), and a weak negative pressure is generated in the back bubble nozzle 5, so that as shown in FIG. Even when a negative pressure is acting, the backflow of the bath water from the back bubble nozzle 5 into the air supply pipe 8 can be prevented. Therefore, there is no risk of forced mixing of air and bath water near the branch portion of the air supply pipe 8 as in the related art, and bathing comfort can be obtained by the noise prevention effect. It is needless to say that the same noise prevention effect can be obtained in the case of one-side operation using only the back bubble nozzle 5.

In this embodiment, the leak passage 74 provided in the flow path opening / closing valves 17 and 18 can be easily formed by drilling or the like, which is advantageous in terms of production and cost.

[0013]

As described above, the present invention supplies bath water from a nozzle water supply pipe and air from an air supply pipe to a plurality of bubble nozzles disposed in a bathtub body, respectively. The flow path opening / closing valve that opens and closes is provided with a leak passage that supplies bath water having a flow rate smaller than the flow rate in the closed state to the bubble nozzle side in the closed state, so that even in the bubble nozzle corresponding to the closed flow path open / close valve. Negative pressure is generated, and backflow of bath water into the air supply pipe can be prevented. As a result, even when a part of the plurality of bubble nozzles is used, there is no possibility of mixing the air and the bath water in the air supply pipe, thereby preventing noise generation and enabling a comfortable bathing. To play.

[Brief description of the drawings]

FIG. 1A is a cross-sectional view of a flow path on-off valve according to an embodiment of the present invention. (B) shows the open state of the flow path on-off valve, and (c) shows the closed state.

FIG. 2 is an overall perspective view of the bubble generating bathtub.

FIG. 3 is a piping diagram of the same.

FIG. 4 is a block diagram of the above.

FIG. 5 is an explanatory view showing a one-side operation state of the above.

FIG. 6 is a cross-sectional view showing a conventional flow path on-off valve.

FIG. 7 is an explanatory view showing a one-side operation state of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bath tub body 3 Back nozzle water supply pipe 4 Foot nozzle water supply pipe 5 Back bubble nozzle 6 Foot bubble nozzle 8 Air supply pipe 15 Circulation pump 17 Back channel open / close valve 18 Foot channel open / close valve 74 Leak passage

Claims (1)

(57) [Claims] 1. A plurality of bubble nozzles provided at a plurality of locations on a bathtub body, a plurality of nozzle water supply pipes for individually supplying bath water circulated from a circulation pump to each of the bubble nozzles, and each of the bubble nozzles An air supply pipe that is branched and connected to supply air to the bath water injected from the bubble nozzle, and a plurality of flow path opening / closing valves that are respectively inserted into the nozzle water supply pipes and open and close the flow path of the nozzle water supply pipe. Wherein the flow path opening / closing valve has a leak passage for supplying bath water having a flow rate smaller than the flow rate in the closed state to the open state to the bubble nozzle side.