JPH0312158A - Bubble water current generator - Google Patents

Abstract

PURPOSE:To generate the bubble water current of low vibration and low noise and to create a comfortable bathing environment by arranging an entrance nozzle and an exit nozzle so as to be mutually faced with a fixed distance between and setting a mixing room, for which a mixed air sucking part is provided, so as to surround the entrance nozzle. CONSTITUTION:When a pump 6 is operated, hot water sucked from a bathtub 7 through a pipe 8 goes to be the high-speed water current in an entrance nozzle 1, whose ara is reduced, and is emitted into a mixing room 4. As a result, the inside of the mixing room is set to negative pressure and air in a bathroom passes through an air sucking pipe 5, arrives at an enlarged part 5a and is sucked from a mixed air sucking part 3 into the mixing room 4. In such a case, since the mixed air sucking part 3 is opened so as to surround the entrance nozzle 1, the air is uniformly mixed with the water from the circumference of the water current. Accordingly, since the axially symmetric uniform bubble water current can be obtained in the mixing room 3, the hydrodynamic noise to be generated itself can be suppressed to be low. Further, solid propagating tone to be propagated to a building can be reduced as well.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a device that utilizes the water flow discharged from a pump to suck air into a mixing chamber provided on the discharge side of the pump and ejects a stream of bubbly water into a bathtub. be.

2. Description of the Related Art As shown in FIG. 3, this type of conventional bubble water flow generating device sucks hot water from a bathtub 7 with a circulation pump 6, and a mixing chamber 4 is provided downstream of this circulation pump 6. The tip is opened into the bathtub 7. The mixing chamber 4 consists of an inlet nozzle 1 and an outlet nozzle 2 having horizontal axes, and a mixed air suction part 3 whose axis is orthogonal to the two nozzle axes. The other end is open to the atmosphere via the inflow pipe 5 (for example,
Publication No. 8027).

Problems to be Solved by the Invention However, in the above configuration, the intake air is sucked in from the upper end of the mixing chamber, so the bubble water flow does not become an axially symmetrical flow, and especially in the outlet nozzle population section 2a, the air flows in the radial direction. The pressure distribution was not uniform.

As a result, the pressure fluctuation itself became a sound source, propagated inside the air inlet pipe 5, and radiated noise into the bathroom from the open end. In addition, the bubble water flow in the mixing chamber 4 induces pressure pulsations and becomes a source of large vibrations, which causes the bathtub to vibrate, causing some of it to propagate directly into the bathroom or, in some areas, to structures, causing vibration noise in neighboring rooms and downstairs. There were problems such as radiation.

The present invention aims to eliminate such conventional drawbacks, and to create a comfortable bathing environment by providing a bubble water flow generating device with low vibration and low noise.

Means for Solving the Problems In order to solve the above problems, the bubbly water flow generating device of the present invention has an inlet nozzle and an outlet nozzle facing each other with a fixed distance apart, and a mixed air suction part surrounding the inlet nozzle. It consists of a mixing chamber, an air suction pipe whose one end is open to the atmosphere, and the other end of which is open to the atmosphere, and a circulation pump that sends a water flow to an inlet nozzle.

Operation According to the above-described configuration, the present invention first injects hot water sucked from the bathtub into the inlet nozzle using the circulation pump to generate a high-speed water flow in the mixing chamber. As a result, the mixed air suction part located on the outer periphery of the nozzle in the mixing chamber becomes a negative pressure, and the air sucked through the air suction pipe can be uniformly blown into the mixing chamber from the outer periphery of the nozzle. The thus produced mixed stream of air bubbles and hot water can finally be ejected into the bathroom through the outlet nozzle.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.

In FIG. 1, reference numeral 4 denotes a mixing chamber composed of an inlet nozzle 1 and an outlet nozzle 2 which are placed opposite each other at a certain distance apart, and a mixed air suction part 3 which is arranged so as to surround the inlet nozzle. The inlet nozzle l is connected to the bathtub 7 via a circulation pump 6 and piping 8 on the upstream side. - The tip of the blade nozzle 2 communicates with the bathtub 7. Further, the mixed air suction section 3 communicates with the air suction pipe 5 via the enlarged portion 5a, and the other end of the air suction pipe is open to the atmosphere.

When the pump 6 is operated in the above configuration, the hot water sucked from the bathtub 7 through the piping 8 becomes a high-speed water stream at the inlet nozzle 1 whose area is reduced, and is ejected into the mixing chamber 4.

As a result, the pressure inside the mixing chamber becomes negative, and the air in the bathroom passes through the air suction pipe 5, reaches the enlarged portion 5a, and is sucked into the mixing chamber 4 from the mixed air suction portion 3. In this case, since the mixed air intake section 3 is opened so as to surround the inlet nozzle 1, the air is uniformly mixed with water from around the water flow.

In the mixing chamber 3, therefore, an axially symmetrical homogenized bubbly water stream is obtained, which is discharged from the outlet nozzle 2 into the bath.

In this way, in this configuration, a homogeneous bubble water flow is obtained in the mixing chamber, so that the hydrodynamically generated noise itself can be suppressed to a low level. Furthermore, since pressure pulsations are reduced, solid-borne sound that propagates through piping and bathtubs into buildings can also be reduced.

In order to mix a more uniform amount of air with the water flow from the outer periphery of the artificial nozzle 1, as shown in FIG. The guide vane 5b may be inserted and installed only in a portion of the enlarged portion 5a that is smaller than the area and faces the air suction portion 3a.With such a configuration, the intake air will flow through the outer periphery of the inlet nozzle 1. It can be inhaled evenly from

Effects of the Invention As described above, the bubbly water flow generating device of the present invention has a mixing chamber configuration in which the artificial nozzle and the outlet nozzle are placed opposite each other, and the mixing air suction part is provided so as to surround the inlet nozzle. Therefore, the following effects can be obtained.

1) Regarding the mixing of bubbles and water flow, since axial symmetry is ensured and the run-up section for mixing is longer, a homogeneous bubble water flow can be supplied into the bathtub.

2) The pressure distribution due to the bubble water flow in the mixing chamber is axially symmetrical, so it is made uniform, and the hydrodynamically generated noise itself can be suppressed to a low level.

3) Since the pressure pulsations in the mixing chamber can be reduced, it is also possible to reduce structure-borne noise that propagates through piping and bathtubs into buildings.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a bubbly water flow generating device showing an embodiment of the present invention, Fig. 2 is an enlarged sectional view of the vicinity of the mixing air suction part of the mixing chamber, and Fig. 3 is a cross section showing a conventional bubbly water flow generating device. It is a diagram. 1... Inlet nozzle, 2... Outlet nozzle, 3... Mixed air suction section, 4... Mixing chamber, 5... Air Suction pipe, 6... pump, 7... bathtub, 8... piping.

Claims (1)

[Claims] The inlet nozzle and outlet nozzle are installed facing each other at a certain distance apart.
A bubble including a mixing chamber with a mixed air suction part surrounding the inlet nozzle, an air suction pipe with one end open to the mixed air suction part and the other end open to the atmosphere, and a circulation pump that sends a water flow to the inlet nozzle. Water flow generator.