JPH039705Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a technique for preventing backflow of water in piping connecting a blower panel and a pump in a bathtub incorporating a bubble generator.

[Background technology]

A bathtub incorporating a conventional bubble generator has a structure as shown in FIG. In other words, in FIG.
A blower plate 3 installed in the bathtub 1 and a connection port 4 are connected to each other. Further, a connection port 4 and a pump 5 are connected to each other by a connection hose 6 outside the bathtub 1. The air sent by the pump 5 is then ejected as bubbles from a blower plate 3 disposed within the bathtub 1. However, in the conventional example described above, the connection hose 6 is raised to the back side of the flange 7 at the upper end of the bathtub 1, or a check valve 14 is provided to prevent water from flowing back from the blower panel 3 to the pump 5. I was trying to do that. However, in the case where the connection hose 6 is raised close to the flange 7, the level is still lower than the flange 7, so when the water level in the bathtub 1 reaches the flange 7, there is a problem that water flows back toward the pump 5 side. ,
It was not sufficient to prevent backflow. Furthermore, in the case where the check valve 14 is installed in the middle of the connection hose 6, there are problems in that maintenance is extremely difficult when the check valve 14 breaks down, and the cost increases due to the installation of the check valve 14. There was a problem that piping resistance increased, the amount of bubbles generated decreased, and an extra load was placed on the pump 5.

[Purpose of invention]

The present invention was devised in view of the above points, and its purpose is to reliably prevent water from flowing back from the blower panel to the pump side with a simple configuration, without the risk of malfunction. To provide a bathtub structure incorporating a bubble generator that is inexpensive.

[Disclosure of invention]

In the bathtub structure incorporating the bubble generator of the present invention, a connection port 4 with a blower panel 3 is provided on the inner wall 2 of the bathtub 1, and a connection hose 6 for connecting the connection port 4 and the pump 5 is connected to the outside of the bathtub 1. In the one placed on the side, a part of the flange 7 provided at the upper end of the bathtub 1 is made to protrude upward to provide a convex portion 8, and a connecting hose 6 is provided.
is raised up to the back side of the convex part 8, and the part of the connecting hose 6 located on the back side of the convex part 8 is located at a higher position than the part of the flange 7 of the bathtub 1 other than the convex part 8. By adopting such a configuration, the above-mentioned object of the present invention is achieved. That is, in the present invention, by positioning the upper end 10 of the rising portion 9 of the connecting hose 6 beyond the position of the flange 7 of the bathtub 1, even if the water level in the bathtub 1 reaches the flange 7, the pump can be removed from the blower plate 3. This structure prevents water from flowing back into the flange 5, and this backflow prevention structure is achieved by providing a protrusion 8 on a part of the flange 7, and attaching the connection hose 6 to the back side of the protrusion 8. It can be configured simply by positioning the upper end 10 of the raised portion 9, and it is now possible to reliably prevent backflow with a simple configuration without using a check valve.

The present invention will be explained in detail below with reference to Examples. A connection port 4 is provided on the inner wall 2 such as the side or bottom surface of the bathtub 1, and a blower plate 3 disposed inside the bathtub 1 is connected to the connection port 4.
is connected. A flange 7 is provided at the upper end portion of the bathtub 1 and protrudes outward over the entire circumference.
A portion of this flange 7 is bent upward to form a convex portion 8. One end of a connection hose 6 is connected to the connection port 4 on the outside of the bathtub 1, and the other end of the connection hose 6 is connected to the pump 5. The connection hose 6 stands up to the back side of the convex part 8, and the upper end 1 of the rising part 9 of the connection hose 6 located on the back side of the convex part 8
0 is positioned higher than the portion of the flange 7 of the bathtub 1 other than the convex portion 8. That is, the lower end of the inner diameter of the upper end portion 10 of the connecting hose 6 is higher than the upper surface of the flange 7 by a length D. A portion of the upper end portion 10 of the raised portion 9 that is continuous to the connection port 4 side is a laterally elongated portion 11 that is laterally elongated along the flange 7. This horizontally elongated portion 11 is inclined so as to become gradually higher toward the upper end portion 10 side. In the embodiment shown in the accompanying drawings, the oblique oblong portion 11
The lower end of the inner diameter of the lower end portion 12 is higher than the upper end of the flange 7, but if the lower end of the inner diameter of the upper end portion 10 is higher than the upper surface of the flange 7, the lower end of the inner diameter of the lower end portion 12 of the oblong portion 11 is higher than the upper end of the flange 7. may be at the same level as the flange 7 or slightly lower than the flange 7.
By the way, the reason why the horizontally long part 11 which is inclined near the back surface of the convex part 8 is provided is that it is longer in the horizontal direction and is slightly inclined, which is caused by the ripples on the surface when the bathtub 1 is full of water. This is to prevent backflow, and the flange 7 is used to prevent backflow.
This is to minimize the length of the upward protrusion of the convex portion 8 provided therein. If the connecting hose 6 is a flexible hose or the like, both ends of the horizontally long section 11 are fixed to the bathtub 1 with pipe fixing fittings 13. By doing this, the slope of the horizontally long section 11 can be adjusted accurately. The upper end portion 10 can be maintained at a predetermined level. By the way, it goes without saying that the pump 5 may be of a type integrated with the bathtub or of a type separated from the bathtub. In addition, when the protrusion 8 is provided on the flange 7 on the short side of the bathtub 1, the protrusion 8 can be used as a pillow on which the bather can rest his or her head during bathing.

[Effect of idea]

In the case of the present invention, as described above, a part of the flange provided at the upper end of the bathtub is made to protrude upward to provide a convex part, and the connecting hose is raised up to the back side of the convex part, so that the convex part of the connecting hose is The part located on the back side of the bathtub is positioned higher than the part other than the convex part of the flange of the bathtub, so that even if the water level in the bathtub reaches the flange, water will not flow back from the blowhole to the pump. Moreover, this type of backflow prevention structure can be constructed simply by providing a convex part on a part of the flange and positioning the upper end of the rising part of the connecting hose on the back side of the convex part. Since there is no need to use a check valve, the cost is reduced, and since there is no need to use a check valve, there is no trouble such as breakdowns, and there is no need to design a bathtub that takes maintenance into account. Compared to those equipped with check valves, piping resistance is lower, the amount of bubbles generated is higher, and no extra load is placed on the pump, and the simple structure can reliably prevent backflow.
The bathtub is equipped with a part to prevent backflow without installing a check valve.By simply providing a convex part on the flange, backflow can be prevented by effectively utilizing the space below the flange. There is no need for special space for arranging piping for this purpose, the bathroom can be used more widely, construction is simplified,
In addition, the connection hose is not exposed to the outside and has a good appearance.
The connecting hose does not get in the way.

[Brief explanation of the drawing]

Figure 1 is a plan view of the present invention, Figure 2 is the X of Figure 1.
3 is a sectional view taken along the Y-Y line in FIG. 1, and FIG. 4 is a sectional view of a conventional example. 5 is a connection port, 5 is a pump, 6 is a connection hose, 7 is a flange, and 8 is a convex portion.

Claims (1)

[Scope of utility model registration request] In a bathtub with a connection port for the blower panel on the inner wall and a connection hose for connecting this connection port and the pump placed on the outside of the bathtub, a part of the flange provided at the top end of the bathtub is placed upward. A protruding convex portion is provided, the connecting hose is raised up to the back side of the convex portion, and the portion of the connecting hose located on the back side of the convex portion is positioned higher than the portion of the flange of the bathtub other than the convex portion. A bathtub structure incorporating a bubble generator.