JPS6216592Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a bathtub water circulation device that sends air bubbles into a bathtub.

Conventional devices of this type include a bathtub and a bath pot.
A lower outlet flow path is connected to an upper return flow path, and the return flow path is composed of an outer pipe and an inner pipe in which a pump is inserted, and the inner pipe has a constriction section in front of the opening. An air discharge pipe is provided in which the root portion communicates with the atmosphere, air is supplied to the constricted portion, and air bubbles are generated in the constricted portion,
It is known that the bubbles are sent into the bathtub and brought into contact with the body, thereby contributing to the promotion of health (for example, Japanese Utility Model Publication No. 57-61435). By the way, the reach distance of the bubbles sent into the bathtub is determined by the buoyancy and ejection force of the bubbles.

In the case of the above-mentioned conventional device, the bubbles generated in the throttle part are sent into the bathtub together with a relatively fast flow of hot water through an inner pipe that forms a forced circulation flow path for the bathtub water. However, when the water exits the inner pipe, it loses momentum due to being blocked by the relatively slow flow of hot water surrounding the outer pipe that forms the natural circulation flow path of the bathtub water, resulting in a weak jetting force. The drawback is that it is extremely unlikely to be released over long distances within the bathtub.

The purpose of the present invention is to provide an apparatus that eliminates the drawbacks of the conventional apparatuses described above.
The return flow path 4 is composed of an outer pipe 5 and an inner pipe 7 with a pump 6 interposed therein, and the inner pipe 7 has a constriction part 9 in front of the opening 8, and the root part is exposed to the atmosphere. In the device equipped with a communicating air discharge pipe 10, a nozzle 11 is provided on the base side of the outer pipe 5, facing toward the opening thereof and connected to the discharge side of the pump 6.

The outer tube 5 communicates with a heat exchanger 12 in the bathtub 2 at its base, and the bath water is naturally circulated through the inner tube 13 of the outlet passage 3.

The inner tube 7 has an opening at its tip facing into the outer tube 5. The opening is arranged toward the bathtub 1, and its opening diameter is made smaller than the inner diameter of the inner tube 7 to form a nozzle-like shape. It is composed of

The air discharge pipe 10 covers the inner pipe 7 with a gap, and the inner diameter is narrowed in front of the opening 8 of the inner pipe 7 to form a constricted part 9, and opens into the bathtub 1 at the tip. The air discharge pipe 1
0, the inner pipe 7 and the outer pipe 14 of the outlet passage 3 force the bathtub water to circulate through the intermediate pump 6, and the water is discharged to the throttle part 9. As a result, a large amount of bubbles were generated in the constricted portion 9.

Although the nozzle 11 is provided in the inner tube 7 in the embodiment, the nozzle 11 is not limited to this. For example, the nozzle 11 is provided at the base of the outer tube 5, and a branch tube (Fig. (not shown) may be configured to communicate with each other.

Relatively fast bath water that is forcibly circulated by the pump 6 is discharged from the nozzle 11, and the relatively slow hot water in the outer tube 5 that is naturally circulated is accelerated by this discharged water.

Next, to explain its operation, the air discharge pipe 10
The bubbles generated in the constriction section 9 of the return flow path 4
The air is ejected from the tip of the air discharge pipe 10 into the bathtub 1 along with the bath water that is forcibly circulated through the inner pipe 7.

Here, in the conventional type, when the bubbles are ejected from the inner pipe, they are blocked by the relatively slow flow of hot water from the outer pipe, weakening the ejecting force, However, in the case of the present invention, the hot water in the outer tube 5 is accelerated by the relatively fast flowing bath water discharged from the nozzle 11, so the jetting force is weakened. Therefore, almost all of the air bubbles are released to a long distance within the bathtub.

In this way, according to the present invention, a nozzle 11 is provided on the base side of the outer tube 5 of the return flow path 4, facing toward the opening side and connected to the discharge side of the pump 6 that forcibly circulates the bathtub water. Since the relatively slow naturally circulating hot water in the outer pipe 5 is accelerated by the relatively fast bath water, the ejection force of the bubbles generated at the constriction part 9 of the air discharge pipe 10 is equal to that of the inner pipe 7 and the outer pipe. The bubbles are no longer weakened at the junction with the pipe 5 as in the conventional bathtub 1, and the bubbles are ejected forcefully into the bathtub 1 and are ejected in large quantities far away, coming into contact with the body and enhancing the effective bubble effect. It has the effect of

[Brief explanation of the drawing]

The drawing is a cutaway side view showing one example of implementation of the present invention. 1... Bathtub, 2... Bath pot, 3... Outlet channel, 4
... Return flow path, 5 ... Outer pipe, 6 ... Pump, 7 ...
Inner pipe, 8...Opening, 9...Aperture part, 10...Air discharge pipe, 11...Nozzle.

Claims (1)

[Scope of utility model registration request] The bathtub 1 and the bath pot 2 are connected by a lower outlet flow path 3 and an upper return flow path 4, and the return flow path 4 is connected to an outer pipe 5 and an inner pipe 7 with a pump 6 interposed therein. configure,
An air discharge pipe 10 having a constriction part 9 in front of the opening 8 of the inner pipe 7 and communicating the root part with the atmosphere is equipped with an air discharge pipe 10 having a constriction part 9 in front of the opening 8 of the inner pipe 7, and the pump 6 facing toward the opening side at the base side in the outer pipe 5. A bathtub water circulation device comprising a nozzle 11 connected to the discharge side.