JPH0670968A - Nozzle device for jet bath - Google Patents

Abstract

PURPOSE:To reduce the space and cost for an air pipe and prevent the flow-out of the bath water due to back current by securing the sufficient operation of the piping around a bathtub by only the water piping. CONSTITUTION:A nozzle device for jet bath has a structure for taking in the outside air directly from an air feeding port 3. A check valve A which is opened so that air is sucked from the air feeding port 3 when the bath water is jetted from a water injection nozzle 2, while closed so as to prevent the injection of the bath water from the air feeding port 3 due to the back current from a bathtub 5, when the bath water is not jetted, is installed in an air feeding passage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jet bath nozzle device for jetting gas-liquid mixed water called jet water in which bubbles are mixed in hot water in a bathtub.

[0002]

2. Description of the Related Art A conventional jet bath includes a plurality of bubble generating nozzles, a circulating pump that circulates the bath water in a bathtub, a water pipe that connects them, an air suction portion that takes in air, and a bubble generating nozzle. It consists of air piping that connects the air intake.

[0003]

In the case of the above-mentioned conventional example,
Since it is necessary to install water pipes and air pipes around the bathtub for connecting the plurality of bubble generating nozzles to the circulation pump and the air suction portion, the pipes become very complicated. Therefore, a space for two types of piping is required, and the cost is high.

Further, when the air suction portion and the air pipe are eliminated and the air is directly sucked from the plurality of bubble generating nozzles, when the water level of the bath water in the bathtub is higher than that of the bubble generating nozzles, the circulation pump is stopped. However, there is a problem that the bath water flows back to the air inlet, and the bath water flows out of the bathtub. The present invention has been made in view of the above problems, and an object of the present invention is that the piping around the bathtub is only water piping, the space and cost of the air piping are reduced, and the bath water flows backward. It is to provide a nozzle device for a jet bath that does not flow out.

[0005]

In order to achieve the above object, the jet bath nozzle device of the present invention ejects the bath water supplied from the water supply pipe 1 from the water ejection nozzle 2 and sucks it from the air supply port 3. Air is mixed with the water jetted from the water jet nozzle 2, and the gas-liquid mixed water mixed with this air is arranged in front of the water jet nozzle 2 with the gas-liquid mixed water jet nozzle 4
In the jet bath nozzle device that jets more into the bathtub 5, the structure is such that the outside air is directly taken in from the air supply port 3, and when the hot water is jetted from the water jet nozzle 2, the air is sucked from the air feed port 3. The check valve A is provided in the air supply path, which is closed to prevent the hot water from flowing back from the bathtub 5 and not from the air supply port 3 when the hot water is not sprayed.

[0006]

According to the above construction, the air can be taken directly into the nozzle from the air supply port 3 by eliminating the air pipe. As a result, the piping around the bathtub 5 is only the water piping, and the space and cost of the air piping can be reduced. Even when the air is directly taken in from the air supply port 3, the air supply path is closed by the check valve A when not in use, and the bath water does not flow backward and flow out.

[0007]

EXAMPLES The present invention will be described below with reference to examples. The bubble generating nozzle B for the jet bath is attached to a plurality of locations on the side wall 5a of the bathtub 5 as shown in FIG.
As shown in FIG. 5, the bath water in the bathtub 5 sucked from the suction port 6 is jetted again into the bathtub 5 as jet water containing bubbles.

FIG. 1 shows an example of the bubble generating nozzle B. Inside the nozzle body 8 attached to the side wall 5a of the bathtub 5 with the nut 7, a water jet nozzle 2, a nozzle retainer 9, O-rings 10, 11, 12, 13, 14, a gas-liquid mixed water jet nozzle 4, a gas liquid Ball portion 4 of the mixed water jet nozzle 4
There is a cartridge integrally configured by a ball retainer 15 for pressing a and a cylinder 16, and at the time of maintenance such as failure or replacement, the cartridge can be pulled out into the bathtub 5 for maintenance. The ball portion 4a of the gas-liquid mixed water jet nozzle 4 is fixed to the cylinder 16 by the O-ring 14 and the ball retainer 15, so that the direction in which the jet flow of the bubble-mixed water mixed with bubbles is jetted into the bathtub 5 can be changed. Has become. O for the water jet nozzle 2
Cylinder 16 with rings 11 and 12 attached
The water jet nozzle 2 is held upstream (backward) by the spring 17, and the nozzle retainer 9 is fixed to the cylinder 16 so that the water jet nozzle 2 does not come off. At this time, the spring 17 presses the water ejection nozzle 2 with a force smaller than the force exerted on the water ejection nozzle 2 by the water pressure of the pump, and when the pump stops and the water pressure exerted on the water ejection nozzle 2 disappears. 2 is spring 1
It is pressed to the upstream side (rear side) by 7. A water pipe connection port 18 is provided on the upstream side of the nozzle body 8, and the water supply pipe 1 as a water pipe is connected to the water pipe connection port 18. Further, the nozzle body 8 is provided with an air supply port 3 at a position corresponding to the water ejection nozzle 2, and the air supply port 3 is communicated with the outer circumference of the cylinder 16. The cylinder 16 is provided with an opening 19, and the cylindrical portion 20 on the outer periphery of the water ejection nozzle 2 is provided with a through hole 21 which can be fitted into the opening 19. The opening 19 and the through hole 21 match when the water ejection nozzle 2 moves forward and do not match when the water ejection nozzle 2 retracts, and these constitute the check valve A of the air supply path.

FIG. 2 is a diagram for explaining the operation. FIG. 2 (a) is during pump operation, in which water pressure is applied to the water ejection nozzle 2, the water ejection nozzle 2 is pressed to the downstream side (front), and the through hole 21 is aligned with the opening 19 so that the air passage is formed. Opens, and air is sucked into the jet stream from the water jet nozzle 2. FIG. 2 (b) is when the pump is stopped and no water pressure is applied to the water ejection nozzle 2, so the water ejection nozzle 2 is upstream (backward) by the spring 17.
The opening 19 and the through hole 21 do not coincide with each other and are sealed by the O-rings 11 and 12, so that the bath water does not flow back to the air supply port 3 side.

FIG. 3 shows another embodiment of the bubble generating nozzle B. The present embodiment is basically the same as the embodiment shown in FIG. 1, except that the cylinder portion 20 of the water jet nozzle 2 and the cylinder 16 have a structure of lapping. In this case, since the structure is a lapping structure, it can be sealed without the O-rings 11 and 12 as in the above embodiment. Figure 4
(A) is during pump operation, water pressure is applied to the water ejection nozzle 2, the water ejection nozzle 2 is pressed to the downstream side (front), the through hole 21 is aligned with the opening 19, and the air flow path is opened. Air is drawn into the jet from the water jet nozzle 2. FIG. 4B shows the state when the pump is stopped, and since water pressure is not applied to the water ejection nozzle 2, the water ejection nozzle 2 is pressed to the upstream side (rear) by the spring 17, and the opening 19 and the through hole 21 do not match, The bath water does not flow back to the air supply port 3 side.

FIG. 5 shows another embodiment in which a check valve A is directly provided in the air supply port 3. A check valve body 23 is attached to the air supply port 3, a ball receiver 24 is installed inside the check valve body 23, and a valve seat 25 is attached to the upper portion. A ball valve 26 is arranged between the ball receiver 24 and the valve seat 25 without being fixed. The ball valve 26 has a specific gravity such that it is pressed against the valve seat 25 by the backflow of bath water when the pump is stopped, and it is preferably lighter than the specific gravity of water.

FIG. 6 is a diagram for explaining the operation of FIG. Figure 6
(A) is when the pump is in operation, and the jet flow is jetted from the water jet nozzle 2 so that the air is sucked from the air supply port 3. At this time, since the ball valve 26 is above the ball receiver 24, the air flow path is secured. FIG. 6B shows the state when the pump is stopped, and since the jet flow is not jetted from the water jet nozzle 2, air is not sucked. Therefore, the bath water tries to flow backward from the gas-liquid mixed water jet nozzle 4, but the ball valve 26 is pressed against the valve seat 25 by the force of the flow of the bath water flowing backward and the air flow passage is blocked, so the bath water does not flow backward. .

In any of the above embodiments, when a pipe is connected to the air supply port 3 and the upper end of the pipe is extended to near the flange of the bathtub 5, the check valve A fails and fails to operate. However, a large amount of bath water does not flow out.

[0014]

As described above, the present invention has a structure for taking in the outside air directly from the air supply port, so that there is no need for an air pipe or an air suction unit as in the conventional case, and the pipe around the bathtub is only a water pipe. In addition, the space and cost of the air pipe are reduced, and when the hot water is sprayed from the water injection nozzle, it is opened so that air is sucked from the air supply port, and when the hot water is not sprayed, the hot water is discharged from the bathtub. There is a check valve in the air supply path that closes the bath water so that it does not flow back and do not flow out of the air supply port.Therefore, when not using jet water, the check valve may cause the bath water to flow back. Even if the air is sucked directly from the air supply port, the bath water can be prevented from flowing out.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

2A and 2B are cross-sectional views for explaining the operation of the same.

FIG. 3 is a sectional view showing another embodiment of the above.

4 (a) and 4 (b) are sectional views for explaining the operation of the same.

FIG. 5 is a sectional view showing still another embodiment of the above.

6 (a) and 6 (b) are sectional views for explaining the operation of the same.

FIG. 7 is a perspective view of the bathtub showing an arrangement state of the above bubble generating nozzles.

FIG. 8 is a schematic sectional view of the above.

[Explanation of symbols]

 1 water supply pipe 2 water jet nozzle 3 air supply port 4 gas-liquid mixed water jet nozzle 5 bath A check valve

Claims (1)

[Claims] 1. A bath liquid supplied from a water supply pipe is jetted from a water jet nozzle, and air sucked from an air supply port is mixed with jet water from the water jet nozzle, and the air is mixed with gas and liquid. In a jet bath nozzle device that jets mixed water into the bath from a gas-liquid mixed water jet nozzle arranged in front of the water jet nozzle, the structure is such that outside air is directly taken in from the air supply port, and the bath water is jetted from the water jet nozzle. When the air is injected, the check valve is opened so that air is sucked from the air supply port, and when the hot water is not injected, the check valve is closed so that the hot water flows backward from the bathtub and does not come out from the air supply port. A jet bath nozzle device characterized by being provided in a path.