JPH06106Y2 - Bubble jet bathtub with backflow prevention device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bubble jet bathtub having a backflow prevention device.

[0002]

2. Description of the Related Art Conventionally, in a type in which hot water is circulated in a bubble jet bathtub, hot water taken in from the bathtub is pressurized by a pump to be sent to an ejector, or when hot water is newly supplied. The hot water is directly supplied from the hot water supply source to the ejector, and the air supplied from the outside of the bathroom through the intake pipe is taken into the ejector and is again ejected into the bath as a jet flow containing a large amount of bubbles.

In such a bubble jet type bathtub, when the outlet of the bubble jet is mistakenly blocked by a part of the body during bathing, the hot water pressurized by the pump and delivered to the ejector is in the bathtub. In some cases, it could not get out of the room, flowed into the intake pipe, and flowed out of the bathroom from the end of the intake pipe.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art. The purpose of the present invention is to erroneously cause bubbles during bathing due to a part of the body or the like. It aims to provide a bubble jet bathtub in which hot water does not flow out of the bathroom even if the jet outlet is blocked.

[0005]

In order to achieve the above object, the bubble jet type bathtub according to the present invention has an ejector having an intake pipe opened in the bathtub, and by the ejector, hot water is supplied by the ejector together with the air sucked by the ejector. In a bubble jet type bathtub that ejects bubbles into the bathtub, a check valve is provided in the middle of the intake pipe, and a stop side of the check valve is provided.
A conduit having the other end opened to a bath was connected.

[0006]

When the bubble jet outlet is blocked by a part of the body during bathing, the hot water sent to the ejector flows into the intake pipe, but the check valve is closed by the hot water and the hot water flows backward. It is refluxed into the bathtub through the conduit from the prevention valve.

[0007]

【Example】

 An example of implementation of the present invention will be described below with reference to the drawings.

FIG. 1 shows a bubble jet type bath 2 provided with a backflow prevention device 1. Bubble jet bath 2
Is provided with an ejector 3 penetrating the side surface of the bathtub 2 so that the outlet 4 is opened toward the inside of the bathtub, and the ejector 3 is provided with an intake pipe 7 connected to an intake member 6 fixed to the outside of the bathroom 5. And a water supply pipe 9 connected to the pump 8, and a water suction pipe 11 connected to the water intake 10 of the bathtub 2 is connected to the pump 8. The water intake 10, the water suction pipe 11, the pump 8, the water supply pipe 9, The ejector 3 forms one circulation path. It is also possible to directly supply hot water to the ejector 3 from a hot water supply source (not shown) without using the pump 8.

The backflow prevention device 1 is provided with a backflow prevention valve 12 in the middle of the above-mentioned intake pipe 7 with the direction from the intake member 6 to the ejector 3 as the flow direction, and the backflow prevention valve 1 shown in FIG.
A conduit 14 is connected to the stop side 13 of 2 and the other end 15 of the conduit 14 is opened to the bath 2 to form a return path. The check valve 12 is installed so that the connection position of the conduit 14 is higher than the position of the molten metal surface when the molten metal surface is the highest in the bathtub 2.

Next, the operation will be described based on the example of the above embodiment.

The hot water in the bathtub 2 is taken in through the water inlet 10,
When the hot water is supplied to the ejector 3 after being pressurized by the pump 8, the hot water takes in the air supplied through the intake pipe 7 from the intake member 6 fixed to the outside of the bathroom 5 in the ejector 3 and blows it as a jet flow containing a large amount of bubbles. It is jetted again from the outlet 4 into the bathtub 2. At this time, the check valve 12 is opened by the intake pressure.

In such a state, when the outlet 4 is closed by a part of the body while taking a bath, the hot water pressurized by the pump 8 flows into the intake pipe 7 and reaches the check valve 12. At this time, the check valve 12 is closed by the flow pressure of the hot water, the hot water enters the conduit 14 from the stop side 13 and is returned to the bath 2 through the conduit 14.

When the closed outlet 4 is opened again, the hot water is jetted from the outlet 4, and at the same time, when the hot water in the intake pipe 7 is sucked into the ejector 3, the check valve 12 is turned on by the intake pressure. The air for foaming is sent to the ejector 3 by being opened.

[0014]

Since the bubble jet type bathtub of the present invention has the backflow prevention device constructed as described above, it is possible to accidentally block the bubble jet outlet by a part of the body while taking a bath. Even if it happens, the hot water flowing into the intake pipe is returned to the bathtub by the check valve and the conduit, so that the hot water can be prevented from flowing out of the bathroom.

[Brief description of drawings]

FIG. 1 is a view showing a bubble jet type bathtub having a backflow prevention device of an embodiment.

FIG. 2 is a cross-sectional view of essential parts showing a connected state of a check valve and a conduit of the embodiment.

[Explanation of symbols]

 1 Backflow Prevention Device 2 Bathtub 3 Ejector 7 Intake Pipe 12 Backflow Prevention Valve 13 Stop Side 14 Conduit 15 Other End

Claims (1)

[Scope of utility model registration request] 1. In a bubble jet type bathtub in which an ejector having an intake pipe is opened in a bathtub, and air bubbles sucked by the ejector together with hot water are jetted into the bathtub by the ejector, backflow is prevented in the middle of the intake pipe. With a valve,
A bubble jet bathtub having a backflow prevention device in which a conduit having the other end opened to a bathtub is connected to the stop side of the check valve.