JPH0570538U - Bubble jet bathtub with backflow prevention device - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a bubble jet bathtub in which hot water does not flow out of the bathroom even if the outlet of the bubble jet is accidentally blocked by a part of the body while taking a bath. An ejector 3 having an intake pipe 7 is opened in a bathtub, and in the bubble jet type bathtub 2 in which the ejector 3 ejects, into the bathtub 2, bubbles of air drawn by the ejector 3 together with hot water supply. A check valve 12 was provided on the way, and a conduit 14 having the other end 15 opened to the bath 2 was connected to the stop side 13 of the check valve 12.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bubble jet bathtub having a backflow prevention device.

[0002]

[Prior Art]

 Conventionally, in the bubble jet type bathtub that circulates hot water, the hot water taken from the bathtub is pressurized by a pump and sent to the ejector, and when new hot water is supplied, it is directly ejected from the hot water source. The air is supplied from the outside of the bathroom through the intake pipe inside the ejector, and is ejected again into the bath as a jet stream containing a large amount of bubbles.

In such a bubble jet type bathtub, if the outlet of the bubble jet is accidentally blocked by a part of the body during bathing, the hot water supplied by the pump to the ejector is Occasionally, there was a situation in which it could not get out of the bathtub, flowed into the intake pipe, and flowed out of the bathroom from the end of the intake pipe.

[0004]

[Problems to be solved by the device]

 The present invention has been made in view of such a point of the conventional technique, and the purpose thereof is to accidentally block the bubble jet outlet by a part of the body while taking a bath. Even so, the idea is to provide a bubble jet bathtub where hot water does not flow out of the bathroom.

[0005]

[Means for Solving the Problems]

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

[0006]

[Action]

 When the bubble jet outlet is blocked by a part of the body while 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 check valve prevents the hot water from flowing back. It is returned to the bathtub through the conduit.

[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 bathtub 2 provided with a backflow prevention device 1. In the bubble jet type bathtub 2, an ejector 3 is provided on a side surface of the bathtub 2 so that a blowout port 4 is opened toward the inside of the bathtub. 6, an intake pipe 7 connected to 6 and a water supply pipe 9 connected to a pump 8 are connected, and a water intake pipe 11 connected to a water intake 10 of the bath 2 is connected to the pump 8. The pump 8, the water pipe 9, and the ejector 3 form one circulation path. It is also possible to supply pressurized hot water to the ejector 3 directly 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-described intake pipe 7 with the direction from the intake member 6 to the ejector 3 as the flow direction, and the stop of the backflow prevention valve 12 shown in FIG. A conduit 14 is connected to the side 13, 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 in the bathtub 2 when the molten metal surface is the highest.

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

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

In this state, when the outlet 4 is blocked 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 caused by the intake pressure. Is opened, and the foaming air is sent to the ejector 3.

[0014]

[Effect of the device]

 Since the bubble jet bathtub of the present invention has the backflow preventing device configured as described above, even if the bubble jet outlet is accidentally blocked by a part of the body during bathing, The hot water that has flowed into the intake pipe is returned to the bathtub by the check valve and conduit, which prevents the hot water 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 bath having a backflow prevention device in which a conduit having the other end opened to a bath is connected to the stop side of the backflow prevention valve.