JPH039749A - Air bubble jet stream bathtub - Google Patents

Abstract

PURPOSE:To reduce jet stream noise by distributing a water stream by mounting the distribution means provided on the downstream side of a mixing pipe and a distribution pipe whose passage cross-section immediately after a metal net is suddenly made wider than the cross-section of the mixing pipe and subsequently gradually contracts. CONSTITUTION:In an air bubble jet stream bathtub 1, a throttle pipe 4 equipped with a nozzle 3, an air suction pipe 5 sucking air, a mixing pipe 6 mixing water and air, the metal net 7 of a distribution means, a distribution pipe whose passage cross-section immediately after the metal net is made suddenly wider than the cross-section of the mixing pipe 6 and subsequently gradually contracts and a blow-out port 10 of an air bubble mixed water stream are mounted on the way of a pipeline 2. The flow of water recirculated by a pump 9 is accelerated in its flow velocity by a throttle part 3 to generate negative pressure to suck air and water is mixed with air in the mixing pipe 6 to generate an air bubble-containing water stream. The water stream mixed with air is distributed by the metal net 7 and the flow velocity thereof is decelerated by the distribution pipe 8 suddenly expanded on the downstream side of the metal net to suppress the generation of noise and the cross-section of the downstream end of the distribution pipe 8 is throttled to again accelerate the flow velocity of the water stream injected in the bathtub 1 and the expanse of the water stream is also suppressed to reduce disturbance to largely reduce jet stream noise.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a bubble-jetting bathtub in which air bubbles are generated in the bathtub by a water flow from a pump.

2. Description of the Related Art Conventionally, a bubble jetting bathtub has been constructed as shown in FIG. That is, a constriction part 23, an air suction port 24, and a mixing pipe 25 are provided in the middle of a pipe line 22 through which water is circulated by a pump 21, and a water stream containing air bubbles is ejected from a side surface 26 of the bathtub. Here, 27 is a bathtub, and 28 is a water surface.

Problems to be Solved by the Invention With such a configuration, conventional bubble jet bathtubs draw air by the negative pressure generated when the water flow circulated by the pump is sped up by the constriction part, and the water is sucked in by the mixing pipe. It was designed to mix water and air to generate a water stream containing bubbles. However, this configuration has a problem in that very loud noise is generated when water and air mix or when a water stream containing air bubbles is ejected into the bathtub. This noise has caused problems such as not being able to enjoy TV or music in the bathroom, and problems such as having to install double windows into neighboring houses due to the noise from the neighborhood.

The present invention solves such conventional problems, and aims to significantly reduce jet noise by rectifying the water flow using a wire mesh and a rectifier pipe after mixing water and air to suppress noise.

Means for Solving the Problems The present invention for solving the above problems includes a constrictor pipe provided with nozzle portions in order from the upstream side of the water flow in the middle of a pipe line through which water is circulated by a pump, and a pipe immediately after the nozzle. An air suction pipe provided on a roadside for sucking air, a mixing pipe for mixing water and air, a rectifying means provided on the downstream side of the mixing pipe, and a passage cross section immediately after the wire mesh that is steeper than the mixing pipe cross section. The structure is a bubble spouting bathtub equipped with a rectifying pipe whose cross section is gradually reduced after being expanded, and a blowout port for a bubble-mixed water stream.

Effect of the present invention With the above-described configuration, the water flow mixed with air is rectified by a wire mesh, and a rapidly expanding rectifier pipe is provided on the downstream side of the wire mesh to reduce the flow velocity and suppress the generation of noise. By narrowing the cross section at the downstream end of the tube, the flow velocity of the water jetted into the bathtub is increased again, and by suppressing the spread of the water flow and reducing turbulence, it is possible to greatly reduce the jet noise.

EXAMPLE Below, an example of the bubble jet bathtub of the present invention is shown in FIGS. 1 and 2.
Explain using.

As shown in FIGS. 1 and 2, the bubble jet bathtub of the present invention includes a constrictor pipe 4 equipped with nozzle portions 3 in the middle of a pipe line 2 through which water is circulated by a pump 9, starting from the upstream side of the water flow; An air suction pipe 5 for sucking air provided on the side surface of the pipe immediately after the nozzle, a mixing pipe 6 for mixing water and air, a wire mesh 7 as a rectifying means provided on the downstream side of the mixing pipe, and a wire mesh 7 immediately after the wire mesh. The bubble spouting bathtub 1 has a configuration including a rectifier tube 8 whose passage cross section rapidly expands than the mixing tube cross section and then gradually becomes smaller in cross section, and a blowout port 10 for a bubble-mixed water flow.

In such a configuration, the flow of water circulated by the pump is sped up by the constrictor, which causes air to be sucked in by the negative pressure generated, and the water and air are mixed in the mixing pipe to generate a water stream containing air bubbles. The configuration is such that Then, the water flow mixed with this air is rectified by a wire mesh, and a rapidly expanding rectifier pipe is provided on the downstream side of the wire mesh to reduce the flow velocity and suppress the noise generation. By narrowing down, the flow speed of the water jet into the bathtub is increased again, and by suppressing the spread of the water flow and reducing turbulence, it is possible to greatly reduce the jet noise. Note that the effects of the present invention can also be obtained by using a rectifying means other than a wire mesh, such as a perforated plate.

In addition, as shown in Fig. 3, the mixing tube 6 and the rectifying tube 8 are
By connecting the two, turbulence and drift in the water flow can be further absorbed and jet noise can be further reduced.

By reducing the jet noise, you can enjoy watching TV or music in the bathroom, and you can eliminate the nuisance caused by nearby noise, creating a comfortable living environment.

Effects of the Invention As described above, according to the bubble jetting bathtub of the present invention, the water flow mixed with air is rectified and the flow velocity is slowed down by the wire mesh and the rectifier pipe, and the spread of the water flow in the bathtub is suppressed to reduce turbulence. This makes it possible to significantly reduce jet noise. Furthermore, by connecting the pipelines with rubber tubes, turbulence and drift can be further absorbed and noise can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a side cross-sectional view of a bubble jet bathtub according to an embodiment of the present invention, FIG. 2 is a side cross-sectional view of the same bubble jet generation mechanism, and FIG. 3 is a side cross-sectional view of a bubble generation mechanism according to another embodiment of the present invention. Cross section, 4th
The figure is a side sectional view of a conventional bubble jet bathtub. 1...Bathtub, 2...Pipe line, 3...
... Nozzle, 4 ... Squeezing pipe, 5 ... Air suction pipe, 6 ... Mixing pipe, 7 ... Wire mesh, 8 ...・Rectifier tube, 9...Pump, IO
...Air outlet.

Claims (1)

[Claims] In the middle of a pipe in which water is circulated by a pump, there is a constrictor pipe equipped with a nozzle portion in order from the upstream side of the water flow, an air suction pipe provided on the side of the pipe immediately after the nozzle to suck in air, and a A mixing tube for mixing, a rectifying means provided on the downstream side of the mixing tube, a rectifying tube whose cross section of the passage immediately after the wire mesh expands rapidly than the cross section of the mixing tube, and then gradually reduces the cross section, and blows out the air bubble mixed water stream. Bubbly bathtub with spout.