JPH05200085A - Water circulation bathtub - Google Patents

Abstract

PURPOSE:To prevent the occurrence of a reverse low due to mixing of bubbles by using negative pressure. CONSTITUTION:This water circulation bathtub is so constituted that a hot bath in a bathtub 1 is sucked through a suction port 9 by means of a circulating pump 8, and returned to the bathtub 1 through a return port 4 after mixed with the air as bubbles introduced from an air intake 15 by using negative pressure. In this case, there is provided a pump stopping means for stopping the pump 8 by gradually increasing the throttle amount of a flow control valve provided in a circulation pipe line.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circulating bath, and more particularly to a technique for solving the problems associated with the inclusion of air bubbles by using negative pressure.

[0002]

2. Description of the Related Art Conventionally, in a circulation bathtub, the bathwater in the bathtub is sucked from a suction port by a circulation pump, and the air introduced from an air suction port is mixed as air bubbles by utilizing a negative pressure and is then discharged from a return port. It returns to the bathtub.

[0003]

However, in the case of such a structure, when the circulation pump is stopped because the air is sucked by utilizing the negative pressure from the air suction port and mixed as bubbles, As shown in FIG. 7, the air intake port 1
The hot water flows back into the air introducing pipe b communicating with 5. In order to solve such a problem, a muffling filter F is arranged in the air introducing pipe b to suppress the sound generation associated with the air suction, and the muffling filter F prevents the backflow of hot water. However, it was not possible to sufficiently prevent backflow. Further, when the muffling filter F is inserted, it becomes a resistance against the intake of air from the air intake port 15.

The present invention has been made in view of the above problems, and an object thereof is to suck a sufficient amount of air from an air suction port without relying on a check valve such as a sound deadening filter. On the other hand, it is an object of the present invention to provide a circulation bathtub in which the backflow of hot water from the air inlet does not occur when the circulation pump is stopped.

[0005]

According to the present invention, the bath water in the bath tub 1 is sucked from the suction port 9 by the circulation pump 8 and the air introduced from the air suction port 15 by utilizing negative pressure is mixed as bubbles. A pump stop means C which is a circulation bathtub that returns from the return port 4 into the bathtub 1 and gradually stops the circulation pump 8 by gradually increasing the throttle amount of the flow control valve 23 provided in the circulation pipe. A circulating bathtub that is provided with.

[0006]

In this way, the hot water in the bathtub 1 is sucked from the suction port 9 by the circulation pump 8 and the air introduced from the air suction port 15 is mixed as air bubbles by utilizing the negative pressure and is mixed from the return port 4 A pump stop means C which is a circulation bath returning to the bath 1 and which gradually stops the circulation pump 8 by gradually increasing the throttle amount of the flow control valve 23 provided in the circulation pipe when the circulation pump 8 is stopped.
By providing the above, the circulation pump 8 does not suddenly stop, but when the circulation pump 8 is stopped, the throttle amount of the flow control valve 23 in the circulation line is gradually increased by the pump stop means C to increase the circulation amount. Throttle, the negative pressure is suppressed accordingly, and the backflow of hot water caused by a large negative pressure when the circulation pump 8 is stopped all at once is suppressed, and hot water is jetted from the air suction port 15 in a reverse flow. It's a thing that never happened.

[0007]

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 2 is a perspective view of the entire bath 1, and FIG. 1 is a pipeline diagram showing the entire system. A circulation pump 8 is arranged on the side of the bathtub 1, and a suction port 9 and the circulation pump 8 in the bathtub 1 are connected by a suction pipe 10. The circulation pump 8 removes hot water in the bathtub 1. Can be inhaled. On the inner wall surface of the bathtub 1, a plurality of back jet nozzles 11 and jet feet 12 for jetting hot water mixed with bubbles are provided in the bathtub 1. The jet nozzles 11 and 12 and the circulation pump 8 are provided.
Are connected by nozzle water supply pipes 13 and 14, so that hot water can be supplied to the injection nozzles 11 and 12.
The flange 2 of the bathtub 1 is provided with an air intake port 15,
The air inlet 15 and the injection nozzles 11 and 12 are connected to the air pipe 1
6 are connected to each other, whereby the injection nozzles 11 and 12 are connected.
Air can be supplied to. On the flange 2 of the bath tub 1, a pair of shoulder rest shower devices 17 are arranged at positions corresponding to the shoulders of the bather. The bath water is supplied to the shoulder shower device 17. Operation of bathtub 1 is remote control 2
The operation is performed at 0, and it is possible to select each operation pattern, adjust the strength of the flow rate, adjust the frequency of the jet flow change, and the like. A signal from the remote controller 20 is sent to the remote controller light receiving section and transmitted to the control section 22 housed in the circulation pump 8.

The bath water sucked from the suction port 9 is supplied from the circulation pump 8 to the water supply pipes 13 and 14 and the shower water supply pipe 18 for shoulder rest via the flow rate control valve 23 for controlling the circulation flow rate inside the pump unit. It has become so.
The water supply pipes 13 and 14 and the shoulder shower water supply pipe 18 are respectively provided with a back flow path switching valve 24 such as a motor valve, a foot flow path switching valve 25, and a shoulder flow path switching valve 26. The supply of hot water can be switched. The water supply pipe 13, passing through the back flow path switching valve 24 and the foot flow path switching valve 25,
The bath water circulated through 14 is the injection nozzles 11, 1
At 2, the air is mixed with the air from the air pipe 16, and a jet stream containing bubbles is jetted into the bath 1. The bath water that has circulated through the shoulder channel switching valve 24 and the shoulder pad shower water supply pipe 18 is supplied to the shoulder pad shower device 17, and jetted from the shoulder pad nozzle 3 of the shoulder pad shower device 17. To be done.
The flow rate of the bath water circulated and supplied to the injection nozzles 11 and 12 and the shower device 17 for shoulder rest is controlled by the control unit 22.
It is possible to adjust the circulation flow rate by controlling 3, and the injection nozzles 11 and 12 and the shoulder pad shower device 17 can be adjusted.
Adjusting the strength of the jet from the shoulder pad nozzle 3
Various variations of jet flow can be obtained.

When the circulation pump 8 is stopped, a pump stop means C is provided for gradually increasing the throttle amount of the flow control valve 23 provided in the circulation pipe to stop the circulation pump 8. And
A sound deadening filter F made of a non-woven fabric is provided on the air introducing pipe b having the air suction port 15. In this way, when the circulation pump 8 is stopped, the pump stop means C for gradually increasing the throttle amount of the flow control valve 23 provided in the circulation pipe to stop the circulation pump 8.
By providing the above, the circulation pump 8 does not suddenly stop, but when the circulation pump 8 is stopped, the pump stop means C gradually increases the throttle amount of the flow control valve 23 in the circulation pipe to increase the circulation amount. Throttle, the negative pressure is suppressed accordingly, and the backflow of hot water caused by a large negative pressure when the circulation pump 8 is stopped all at once is suppressed, and hot water is jetted from the air suction port 15 in a reverse flow. There is nothing.

[0010]

As described above, according to the present invention, the hot water in the bathtub is sucked by the circulation pump from the suction port, and the air introduced from the air suction port is mixed as air bubbles by utilizing the negative pressure and is returned to the return port. It is a circulation bathtub that returns from the inside to the bathtub, and when the circulation pump is stopped, pump stop means for gradually increasing the throttle amount of the flow control valve provided in the circulation pipe to stop the circulation pump Instead of stopping, when stopping the circulation pump, the pump stopping means gradually increases the throttle amount of the flow control valve in the circulation pipe to throttle the circulation amount, and thereby suppresses the negative pressure. There is an advantage that the backflow of hot and cold water caused by a large negative pressure when the circulation pump is stopped all at once is suppressed, and the hot and cold water does not spout from the air suction port in a backflow.

[Brief description of drawings]

FIG. 1 is an overall perspective view of an embodiment of the present invention.

FIG. 2 is a piping diagram of the same.

FIG. 3 is a block circuit diagram of the above.

FIG. 4 is a time chart of the above.

FIG. 5 is an explanatory view showing an air intake operation of the above.

FIG. 6 (a) is a schematic sectional view of the air introducing pipe of the above,
(B) is a top view of a sound deadening filter.

FIG. 7 is an explanatory diagram showing an operation of a conventional example.

[Explanation of symbols]

 1 Bathtub 4 Return port 8 Circulation pump 15 Air intake port C Pump stopping means

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] April 20, 1992

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

Claims (1)

[Claims] 1. Circulation in which the bath water in the bathtub is sucked from a suction port by a circulation pump and the air introduced from the air suction port is mixed as air bubbles by utilizing negative pressure and returned to the bathtub from the return port. A circulating bathtub comprising a pump stopping means for gradually increasing a throttle amount of a flow control valve provided in a circulation pipe to stop the circulating pump when the circulating pump is stopped.