JP2689639B2 - Bubble ejection device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bubble ejecting apparatus that generates bubbles in a bathtub 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, a throttle section 23, an air suction port 24, and a mixing pipe 25 are provided in the middle of a pipe 22 in which water is circulated by the pump 21.
A water stream 29 containing air bubbles is ejected from the nozzle. here
27 is a bathtub and 28 is the water surface.

SUMMARY OF THE INVENTION In such a configuration, in the conventional bubble jet device, the flow of water circulated by the pump sucks air by negative pressure generated by increasing the flow velocity by the throttle section, and the mixing pipe is used. Water and air were mixed to generate a water flow containing bubbles. However, such a configuration has a problem that a very loud noise is generated when water and air are mixed or when a water flow containing air bubbles is jetted into the bathtub. Due to this noise, there have been problems such as not being able to enjoy TV and music in the bathroom, and causing annoyance to neighboring houses as neighborhood noise.

The present invention is to solve such a conventional problem, and a structure in which the surface in contact with air to the water flow is a small independent opening on the side surface of the conduit or the opening formed in a thin ring around the water flow. By reducing the size of the bubbles mixed in the water flow to suppress the generation of noise during mixing, the expansion of the throttle restricts the spread of the water flow and reduces the impact when it blows out into the water. Is intended to be significantly reduced.

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 a flow passage cross section is narrowed from an upstream side to a downstream side of a water flow, An air suction pipe connected to a side surface of the downstream passage of the nozzle portion, an air supply pump provided upstream of the air suction pipe, and a cross-sectional shape of the air suction pipe in the downstream passage of the nozzle portion. Is provided with a plurality of openings that are divided into a plurality of openings, and a porous tube made of a porous material having an open cell passage, and a mixing tube that mixes air and water sucked into the water flow from the openings.

In addition, in the middle of the pipe in which water circulates by the pump, a nozzle part whose flow passage cross section is narrowed from the upstream side to the downstream side of the water flow, and an air suction pipe connected to the side surface of the conduit at the downstream part of the nozzle part. A mixing tube for mixing air and water sucked into a water stream, and the nozzle portion downstream end is inserted in the center of the mixing tube,
The inner and outer pipe distance between the outer peripheral surface of the rear end of the nozzle portion and the inner peripheral surface of the mixing pipe is made smaller than the diameter of the passage cross section of the rear end of the nozzle portion, and the rear end of the nozzle portion is To
The mixing pipe is inserted deeper into the center of the mixing pipe than the distance between the inner and outer pipes from the upstream end of the narrowed portion of the mixing pipe.

Further, each of the above configurations is provided with a throttle expansion passage having a passage cross-sectional shape in which the cross section of the mixing tube is gradually expanded, then gradually contracted, and then gradually expanded again.

Effect According to the present invention, with the above-described configuration, air is mixed into the water flow from the opening where the continuous air bubbles downstream of the nozzle portion are small, so that the air bubbles are extremely small. When small air bubbles are mixed in the water flow, the water flow is less disturbed, and the generation of noise can be made extremely small. Then, an air suction pump can supplement the air resistance of the continuous bubble passage to suck a large amount of air, and a bubble jetting device having a large amount of bubbles can be obtained.

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

The bubble jet device of the present invention has a flow passage cross section from the upstream side to the downstream side of the water flow in the middle of the pipeline 2 in which water is circulated by the pump 9 as shown in FIG. 1, FIG. 2 and FIG. A plurality of nozzle sections 3 narrowed down, an air suction tube 5 connected to the side surface of the nozzle wake section 8 and a pipeline in the wake section of the nozzle section, each having a small sectional shape of the air suction tube. The opening of
A porous conduit 7 made of a porous material having an open cell passage 10 and a mixing pipe 6 for mixing air and water sucked into the water flow from the opening are provided. The air suction pump 15 is provided on the upstream side of the air suction pipe 5. The air suction pump is shown in FIG. Further, the throttle expansion passage 4 having a passage cross-sectional shape in which the cross section of the mixing pipe is gradually reduced and then gradually enlarged again is connected to the above configuration.

In such a configuration, the flow of water circulated by the pump sucks in air by the negative pressure generated by increasing the flow velocity by the throttle portion of the nozzle portion, and the water and air are mixed in the mixing pipe to contain bubbles. It is configured to generate a water stream 11. Here, since the passage through which the air is sucked is the opening 10 and the continuous bubble passage, the bubbles of the air mixed in the water flow become small, and the pressure fluctuation of the water flow when mixing is small, so that the generation of noise is greatly suppressed. Is done. Then, the air suction pump 15 can supplement the air resistance of the continuous bubble passage to suck a large amount of air, and a bubble jetting device having a large amount of bubbles can be obtained. Further, even if the continuous bubble passage is clogged, by providing the opening in the air suction passage, the passage can be secured and the bubble ejecting device can be made durable. Further, by adding a throttle expansion passage 4 having a passage cross-sectional shape in which the cross section of the mixing pipe is gradually reduced and then gradually expanded again to the above configuration, the expansion of the water flow is suppressed and jetted into the bath. It is possible to suppress the spread of the turbulence on the outer periphery of the jet water flow and significantly reduce the generation of jet noise caused by the turbulence. The gradually expanding passage of the final outlet prevents the rapid expansion into the bathtub and suppresses the turbulence of the water flow. Then, the narrowed passage portion increases the flow velocity, the jet pressure obtained in the bathtub is increased, and the massage effect is improved.

Another embodiment is shown in FIGS. 3 and 4. The porous conduit 12 is made of a porous material 13 having an open cell passage, and an air supply pump 14 is provided upstream of the air suction pipe 14. Reference numeral 16 is a mixing tube, 17 is an expansion passage, and 18 is a nozzle section.

With this configuration, the plurality of small openings on the surface of the porous material reduce the air bubbles mixed in the water flow, and suppress the pressure fluctuation of the water flow when mixing, thereby reducing noise generation. . Moreover, the air supply pump provided in the air pipe can compensate for the air shortage due to the air resistance of the porous material and generate a large amount of bubbles with low noise.

On the other hand, in another embodiment shown in FIGS. 5 and 6, the rear end 20 of the nozzle portion 19 is inserted into the center of the mixing pipe 21, and the outer peripheral surface 22 of the rear end of the nozzle portion is formed. The distance d between the inner and outer pipes with the inner peripheral surface 23 of the mixing pipe is made smaller than the diameter D of the passage cross section of the rear end of the nozzle portion, and the rear end of the nozzle portion is formed into a throttle portion of the mixing pipe. It was configured to be inserted deeply into the center of the mixing pipe from the upstream end 24 with a distance l of the inner and outer pipes. 26 is an air suction pipe.

In such a configuration, since air is mixed into the water flow from the air passage having a narrower passage diameter than the nozzle portion provided on the outer periphery of the downstream end of the nozzle portion, air bubbles become smaller due to the narrow air passage. Since the pressure fluctuation of the water flow is small, the generation of noise is greatly suppressed.

Further, also in this case, by adding the throttle expansion passage 25 to the above-described configuration, similarly to each of the cases described before, the spread of the turbulence on the outer periphery of the jet water flow is suppressed and the generation of jet noise is significantly reduced. That is, the flow velocity is increased and the massage effect is improved.

By reducing jet noise with the above configuration, you can enjoy TV and music in the bathroom while enjoying the bubble bath, and eliminate the nuisance of neighborhood due to neighborhood noise and create a comfortable living environment. You can do it.

EFFECTS OF THE INVENTION As described above, according to the bubble jetting device of the present invention, air is mixed into the water stream from the small opening portion of the continuous bubble passage in the downstream portion of the nozzle portion or the thin ring-shaped opening portion around the water stream. Therefore, small bubbles can be mixed into the water flow, and the turbulence of the water flow is small and the generation of noise can be made extremely small. Then, a large amount of air can be sucked by the air suction pump, and a bubble jetting device having a large amount of bubbles can be obtained. Further, even if the continuous bubble passage is clogged, the passage can be secured at the opening, so that the bubble ejecting device can be made durable. Further, since the expansion of the water flow is suppressed by the throttle expansion passage and the water is jetted into the bathtub, the spread of the turbulence on the outer periphery of the jet flow can be suppressed and the generation of jet noise caused by the turbulence can be significantly reduced.

[Brief description of the 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 side sectional view of a bathtub using a bubble jetting device of another embodiment of the present invention, FIG. 4 is a side sectional view of a bubble jetting device of the same embodiment, and FIG. 5 is another embodiment of the present invention. FIG. 6 is a side sectional view of a bath using the bubble jet apparatus of the example, FIG. 6 is a side sectional view of the bubble jet apparatus of the embodiment, and FIG. 7 is a side sectional view of a bath using the conventional bubble jet apparatus. 1 ... tub, 2 ... pipe, 3 ... nozzle part, 4 ... throttle expansion passage, 5 ... air suction pipe, 6 ... mixing pipe, 7 ... perforated pipe line, 8 ... nozzle part rear Ryubu, 9 ... Pump.

Claims (3)

(57) [Claims] 1. A nozzle part, whose flow passage cross section is narrowed from an upstream side to a downstream side of the water flow, and a side surface of the conduit part of the downstream part of the nozzle part, in the middle of a pipe line through which water is circulated by a pump. An air suction pipe, an air supply pump provided on the upstream side of the air suction pipe, and a porous conduit made of a porous material having a continuous bubble passage with a plurality of openings provided in the conduit of the nozzle downstream portion. And a bubble jetting device comprising a mixing pipe for mixing air and water sucked into the water flow from the opening. 2. A nozzle part, whose flow passage cross section is narrowed from the upstream side to the downstream side of the water flow, and a side face of the conduit part of the downstream part of the nozzle part, in the middle of the conduit line through which water is circulated by a pump. An air suction pipe and a mixing pipe for mixing air and water sucked into a water stream are provided, the rear end of the nozzle portion is inserted into the center of the mixing pipe, and the outer peripheral surface of the rear end of the nozzle portion and the The inner and outer pipe distance between the inner peripheral surface of the mixing pipe is made smaller than the diameter of the passage cross section of the downstream end of the nozzle part, and the downstream end of the nozzle part is arranged from the upstream end of the throttle part of the mixing pipe. A bubble jetting device inserted deeper into the center of the mixing pipe than the distance between the inner and outer pipes. 3. The bubble jetting device according to claim 1, further comprising a throttle-expansion passage having a passage cross-sectional shape in which the cross section of the mixing tube is gradually reduced, then gradually reduced, and then gradually enlarged again. .