JPH039751A - Air bubble water stream generating apparatus - Google Patents

Abstract

PURPOSE:To obtain the title apparatus reduced in noise by allowing an air suction pipe to communicate with the side wall of a mixing chamber wherein an inlet nozzle and an outlet nozzle are received so as to be arranged in opposed relationship at a definite distance and providing a sound arrester on the way of the air suction pipe. CONSTITUTION:When a pump 8 is operated, the hot water sucked from a bathtub 10 through piping 9 becomes a high speed water stream through an inlet nozzle 1 reduced in its area to be injected in a mixing chamber 4. The mixing chamber 4 becomes negative pressure and air is sucked in the mixing chamber 4 from the suction part 3 thereof through an air suction pipe 5. Therefore, the fluctuation of the pressure in the mixing chamber 4 mixing air and the water stream becomes large and large noise is generated to pass through the air suction pipe 5 but, since a sound arrester 6 is arranged on the way of the suction pipe 5, the generated noise can be attenuated by said sound arrester 6.

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 is composed 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 air inflow pipe 5 has one end connected to the mixed air suction section 3,
The other end is opened to the atmosphere via an air amount tF8 control valve 8.

Problems to be Solved by the Invention However, in the above configuration, the air taken in from the mixed air inflow section 3 mixes with the water flow in the mixing chamber 4, which causes large pressure fluctuations, resulting in large noise. was occurring. Part of the noise generated in the mixing chamber 4 is radiated into the bathroom from the bathtub 7 via the outlet nozzle 2, and the other part from the air intake port via the air intake pipe 5.

In addition, since the air regulating valve 8 is installed near the air intake port (not shown), especially when the flow rate is reduced, the high-speed intake air collides with obstacles inside the regulating valve, producing aerodynamic noise. .

As described above, the bubble water flow generator of the conventional configuration has the problem of generating a large amount of noise.

The present invention eliminates the drawbacks of the prior art and aims to create a comfortable bathing environment by providing a low-noise bubbly water flow generating device.

Means for Solving the Problems In order to solve the above-mentioned problems, the bubble water flow generating device of the present invention has an air suction pipe connected to the side wall of a mixing chamber in which a single nozzle and an outlet nozzle are arranged facing each other at a certain distance apart. ,
A silencer is installed in the middle of the air intake pipes.

Operation According to the above-described structure, the present invention first injects hot water sucked from the bathtub into the artificial nozzle using the V&ring pump to generate a high-speed water flow in the mixing chamber. As a result, the mixed air suction section in the mixing chamber becomes a negative pressure, and the air is sucked in through the air suction pipe, mixed with the water flow, and then injected into the bathtub from the outlet nozzle. At this time, the air and water mix violently, causing large pressure fluctuations in the mixing chamber, which becomes a source of noise and tries to be radiated into the room from the inlet through the air intake pipe, but the air intake pipes A silencer installed midway can attenuate the generated noise.

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 that accommodates an inlet nozzle 1 and an outlet nozzle 2 which are installed opposite each other with a certain distance apart, and whose side wall communicates with an air intake pipe 5 through a mixed air inlet 3. A muffler 6 is disposed in the middle of the air suction pipe. The inlet nozzle 1 is connected to the circulation pump 8 and piping 9 on the upstream side.
It is connected to the bathtub 10 via the outlet nozzle 2.
The tip also communicates with the bathtub 10.

When the pump 8 is operated in the above configuration, the hot water sucked from the bathtub 10 through the pipe 9 becomes a high-speed water stream at the inlet nozzle 1 whose area is reduced, and is ejected into the mixing chamber 3. As a result, there is a negative pressure inside the mixing chamber, and the air flows through the air intake pipe 5.
The mixed air is sucked into the mixing chamber 3 from the mixed air intake section 3 through the mixed air suction section 3 . Therefore, pressure fluctuations increase in the mixing chamber where air and water are mixed, generating large noise, which passes through the air suction pipe 5 and is radiated from the suction port 5a.In this embodiment, the air suction pipe Since the muffler 6 is disposed in the middle of the pipe 5, the generated noise can be attenuated by this muffler.

Next, another embodiment of the present invention will be described with reference to FIG. FIG. 2 shows a part of the air suction pipe near the muffler, and the difference from the previous embodiment is that an air volume control valve 7 is provided on the downstream side of the muffler 6 in the air suction pipe 5. . According to this configuration, when the air volume is throttled, the air passes through a narrow gap between the solenoid valve 7a and the valve seat 7b, which may generate secondary noise, but the air volume control valve 7 is silenced. Since it is installed downstream of the muffler 6, the muffler 6 can attenuate not only the noise generated within the mixing chamber 4 but also the secondary noise.

Effects of the Invention As described above, according to the bubbly water flow generating device of the present invention, the air suction pipe is communicated with the side wall of the mixing chamber in which the inlet nozzle and the outlet nozzle are installed facing each other, and the air suction pipe is silenced in the middle of the air suction pipe. Since a configuration in which a filter is provided is adopted, the noise generated in the mixing chamber due to the bubble water flow propagates through the air suction pipe, and the noise level radiated from the suction port can be suppressed to a low level.

Furthermore, by installing the air flow control valve downstream of the muffler, secondary noise generated from the valve restrictor can also be reduced.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a bubble water flow generating device showing an embodiment of the present invention, Fig. 2 is a sectional view showing an air suction pipe near a muffler showing an embodiment of the present invention, and Fig. 3 is a sectional view of a conventional air bubble water flow generating device. It is a sectional view showing a water flow generation device. 1... Inlet nozzle, 2... Outlet nozzle, 4... Mixing chamber, 5... Air intake pipe,
6... Silencer, 7... Air flow control valve (
air volume adjustment means), 8...pump.

Claims (2)

[Claims] (1) A bubbly water flow generating device in which an air suction pipe is connected to the side wall of a mixing chamber in which an inlet nozzle and an outlet nozzle are installed facing each other at a certain distance apart, and a silencer is provided in the middle of the air suction pipes. (2) The bubbly water flow generating device according to claim 1, which has an expansion chamber type muffler provided with an air amount adjusting means in the middle of the air suction pipes.