JPH0659298B2 - Bubble ejector - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bubble jetting device for generating bubbles in a bath by a water flow of a pump.

2. Description of the Related Art Conventionally, a bubble ejection device has been configured as shown in FIG. That is, the throttle portion 23, the air suction port 24, and the mixing pipe 25 are provided in the middle of the pipe line 22 through which the water is circulated by the pump 21, and the water flow containing bubbles is jetted from the side face 26 of the bath. Where 27
Is a bathtub and 28 is the water surface.

SUMMARY OF THE INVENTION In such a configuration, in the conventional bubble jetting device, the flow of water circulated by the pump sucks in air by the negative pressure generated by the flow velocity being increased by the throttle portion 23, and the mixing pipe. In 25, water and air were mixed to generate a water flow containing bubbles. However, such a configuration has a problem that a very large noise is generated when water and air are mixed or when a water flow containing bubbles is jetted into the bathtub 27. Due to this noise, there was a problem that TV and music could not be enjoyed in the bathroom, and there was a problem that it annoyed neighboring houses as neighborhood noise.

The present invention is to solve such a conventional problem, the tip passage of the nozzle portion is composed of a porous portion consisting of a plurality of narrow passages, by providing a throttle passage on the downstream side of the mixing pipe, the flow of water after passing the nozzle By reducing the diameter and mixing small air bubbles into the water flow, it is possible to suppress the generation of noise and to suppress the spread of the water flow by the throttle passage to reduce the impact when blowing out into the water and greatly reduce the jet noise. Has an aim.

Means for Solving the Problems The present invention for solving the above problems is, in the middle of a pipeline in which water is circulated by a pump, a nozzle section in which the flow path is narrowed in order from the upstream side of the water flow, and immediately after the nozzle section. Downstream of the mixing pipe, an air suction pipe for sucking air, a mixing pipe for mixing water and air, and a throttle passage having a cross-section that gradually decreases after the cross-section of the mixing pipe suddenly expands are provided on the downstream side of the mixing pipe. And the most downstream end passage of the nozzle part is composed of a porous part composed of a plurality of small-diameter flow paths.

Effect The present invention has the above-described configuration, in which the water flow is finely divided by the porous portion of the nozzle portion, and air is mixed into the thin water flow to reduce bubbles and suppress the generation of noise. It is possible to suppress the spread and suppress the impact when it blows out into the water, and to greatly reduce the jet noise.

Embodiment An embodiment of the bubble jet device of the present invention will be described below with reference to FIGS. 1 to 6.

As shown in FIG. 1 and FIG. 2, the bubble jetting device of the present invention includes a nozzle portion 3 in which a flow passage is squeezed by a pump 9 and a nozzle portion 3 whose flow passage is narrowed in order from an upstream side of the water flow. Air suction pipe 5 for sucking air provided on the side surface of the pipeline immediately after the nozzle portion
A mixing pipe 6 for mixing water and air, and a throttle passage 4 having a cross-section of the mixing pipe which is rapidly expanded and then gradually reduced to be connected to the downstream side of the mixing pipe to blow out a bubble-mixed water stream 10 Further, the most downstream tip passage of the nozzle portion is composed of a porous portion 7 constituted by a plurality of small-diameter flow passages 8 as shown in FIG.

In such a configuration, the flow of water circulated by the pump 9 sucks in air by the negative pressure generated by increasing the flow velocity by the porous portion 7 of the nozzle portion 3 and the throttle passage 4, and the water is mixed in the mixing pipe 6. The air is mixed to generate a water flow containing bubbles. Here, since the water flow is thinly formed by the porous portion 7, air bubbles mixed in the water flow are also small, and the pressure fluctuation of the water flow when mixing is small, so that the generation of noise is significantly suppressed. Further, by narrowing the cross section of the flow passage by the throttle passage 4 provided on the downstream side of the mixing pipe 6, the flow velocity of the water flow ejected to the bathtub is increased, and the spread of the water flow is suppressed to reduce the turbulence, thereby greatly reducing the jet noise. It is possible.

Further, when the flow resistance is increased by using the multi-hole nozzle, the diameter of the hole 18 at the center of the nozzle 13 is increased to reduce the resistance as shown in FIG. By forming the tip 15 of the nozzle 14 having a cutout shape as shown in the figure, the surface area of the water flow in contact with air can be increased and the same effect can be obtained.

By reducing the jet noise, it is possible to enjoy TV and music in the bathroom, eliminate the nuisance of neighborhood due to neighborhood noise, and create a comfortable living environment.

EFFECTS OF THE INVENTION As described above, according to the bubble jetting device of the present invention, the diameter of the water flow after passing through the multi-hole nozzle is reduced to suppress the generation of noise by mixing small bubbles into the water flow, and by the throttle passage. It is possible to suppress the spread of the water flow and to reduce the impact when it blows out into the water, thereby significantly reducing the jet noise.

[Brief description of drawings]

FIG. 1 is a side sectional view of a bathtub using a bubble jet device of an embodiment of the present invention, and FIG. 2 is a side sectional view of the bubble jet device.
FIG. 3 is a front view of a nozzle portion of the bubble jetting apparatus, FIG. 4 is a front view of a nozzle portion of another embodiment of the present invention, and FIG. 5 is a side sectional view of a nozzle portion of another embodiment of the present invention. FIG. 6 is a front view of a nozzle portion according to another embodiment of the present invention, and FIG. 7 is a side sectional view of a bath using a conventional bubble jet device. 1 ... tub, 2 ... pipe, 3 ... nozzle part, 4 ... throttle passage, 5 ... air suction pipe, 6 ... mixing pipe, 7 ... perforated part, 8 ... flow passage, 9 ... … Pump, 10… outlet.

Claims (1)

[Claims] 1. A nozzle part in which a flow path is narrowed from an upstream side of a water flow in the middle of a pipe in which water is circulated by a pump, and an air intake pipe for sucking air provided on a side surface of the conduit immediately after the nozzle part. And a mixing pipe for mixing water and air, and a throttle passage whose cross-section of the mixing pipe is gradually enlarged and then gradually reduced, and the most downstream tip passage of the nozzle portion is a plurality of small-diameter passages. A bubble ejection device comprising a porous portion configured by.