JPH0351426B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a bubble generator for baths.

(Prior art) For example, as shown in Fig. 3, the water heater c is composed of a water heater c equipped with a hot water pump a and a heat exchanger b, and a bathtub d. An outgoing pipe f leading to the hot water inflow member e of the bathtub d, and a bathtub d.
In the forced circulation bath device, a return pipe h is configured from the hot water outlet member g to the suction side of the hot water pump a, so that hot water in the bathtub d can be forcibly circulated by the hot water pump a. In recent years, some bathtubs have been equipped with a bubble generating mechanism i using an ejector or the like of the hot water inflow member e, from which hot water mixed with air bubbles can be spouted into the bathtub d.

An example of such a bubble generation mechanism i is shown in FIG. 4. In this device, a mixed flow nozzle main body 1 having a spherical support part k formed on the rear side is supported in an outer cylindrical member j to which the outflow pipe f is connected, and the direction can be changed by front and rear spherical support annular members m. The mixed flow nozzle main body 1 has a driving flow nozzle part n on the ejection side of the outgoing pipe f, a mixing space o for mixing air as a secondary flow downstream thereof, and a mixing space o for mixing air as a secondary flow, and air flowing into the mixing space o. An air chamber q is connected to the outer cylindrical member j corresponding to the air suction port p, and an air pipe r is connected to the air chamber q. In this mechanism i, a tightening cylinder member s is screwed onto the front side of an outer cylinder member j, and the wall of the bathtub d is narrowed between the flange part t of the tightening cylinder member s and the front end of the outer cylinder member j. It is to be fixed in place.

(Problems to be Solved by the Invention) In this way, the conventional bubble generator has a driving flow nozzle part n, a mixing space o for mixing air as a secondary flow on the downstream side thereof, and a mixing space o for mixing air as a secondary flow, and a mixing space o for mixing air as a secondary flow. The air inlet p for inflowing the air and the jetting part t for the mixed flow are integrally constructed as the mixed flow nozzle body 1, and the direction of these is changed integrally, so that when the direction is changed, Before the hot water ejected from the outgoing pipe f reaches the driving flow nozzle part n, it collides with the wall surface of the introduction part u and is decelerated, and the amount of air handled is reduced compared to a state where the direction is not changed. .

In addition, in such a conventional bubble generator, the mixed flow nozzle main body 1 is provided on the outer cylindrical member j that connects the outflow pipe f, so the length of the protrusion into the bathtub d is equal to the length of the outer cylindrical member j into the bathtub d. The mounting position is the standard, and if the mounting position is different, the above-mentioned protrusion length will also change, and when replacing the mixed flow nozzle main body 1, there is a problem that the outer cylinder member j must also be removed.

The present invention aims to solve the above problems.

(Means for Solving the Problems) To explain the configuration of the present invention with reference to drawings corresponding to embodiments, the bath bubble generator of the present invention includes:
In order to solve the above-mentioned problems, a driving flow nozzle section 2 is constructed on one side of the inner cylinder member 1, and an outgoing pipe 4 connected to a water heater 3 is connected to the upstream side of the driving flow nozzle section 2. A mixed flow nozzle part 5 is supported on the other side of the inner cylindrical member 1 so as to be changeable in direction, and an outer cylindrical member 7 forming an air chamber 6 therebetween is attached to the outside of the inner cylindrical member 1. An air pipe 8 is connected to the outer cylinder member 7, and the inner cylinder member 1 has a downstream space 19 near the driving flow nozzle part 2 and the air chamber 6.
A suction port 9 is formed to communicate with the other side of the outer cylinder member 7, and a tightening cylinder member 10 is screwed to the other side of the outer cylinder member 7.
and the other side cylindrical body 1b are slidably fitted,
The one side cylinder 1a is fixed to the outer cylinder member 7, and the other side cylinder 1b is fixed to the tightening cylinder member 10.

In this configuration, the mixed flow nozzle section 5 has a spherical support section 11 formed on its rear side, and this spherical support section 11 is supported on the other side of the inner cylinder member 1 so as to be slidable along the spherical surface. This allows for a configuration in which the inner cylinder member 1 is supported on the other side of the inner cylinder member 1 so that the direction can be changed.

(Actions and Examples) The operation of the present invention will be explained with reference to illustrated embodiments.

First, in the device of the present invention, an attachment opening 14 slightly larger than the outer diameter of the cylinder body 13 of the tightening cylinder member 10 is formed in advance on the wall of the bathtub 12, and the outer cylinder member 7 is inserted into the attachment opening from the outside of the bathtub 12. In the state that corresponds to 14,
The cylindrical body 13 of the tightening cylindrical member 10 is inserted into the attachment port 14 from inside the bathtub 12, and is screwed onto the outer cylindrical member 7 and tightened. Thereafter, from inside the bathtub 12, by fitting the fitting part of the other side cylinder 1b supporting the mixed flow nozzle part 5 to the one side cylinder 1a fixed to the outer cylinder member 7. The one-side cylinder 1a and the other lung-side cylinder 1b are slidably fitted to form an inner cylinder member 1 as a flow path for mixed flow. An outgoing pipe 4 connected to the hot water supply device 3 is connected to the upstream side of the driven flow nozzle portion 2, and a return pipe 16 to the hot water supply device 3 is connected to the bathtub 12 via a hot water outlet member 15. Note that a short pipe 17 forming a part of the outgoing pipe 4 is fixed in advance to a predetermined position of the inner cylinder member 1 by brazing or the like, and the outgoing pipe 4 connected to the water heater 3 is connected to this short pipe 17. Alternatively, an outgoing pipe connecting member may be provided in advance at a predetermined position of the inner cylinder member 1, and the outgoing pipe 4 may be connected by this connecting member.

The hot water that has flowed into one side of the inner cylinder member 1 through the outgoing pipe 4 by the hot water pump 18 of the water heater 3 is ejected from the driven flow nozzle part 2 into the mixing space 19 on the downstream side of the vicinity thereof. The air in the air chamber 6 is sucked in through the suction port 9. In this way, the driving flow of hot water and the secondary flow of air flow toward the other side of the inner cylinder member 1 while gradually mixing, and after being sufficiently mixed, they are ejected from the mixed flow nozzle portion 5 into the bathtub 12. In addition, the hot water in the bathtub 12 is transferred from the hot water outlet member 15 to the return pipe 16.
The water then returns to the suction side of the hot water pump 18 of the water heater 3, where it is circulated. The hot water whose pressure has been increased by the hot water pump 18 is appropriately heated by the heat exchanger 20, and flows into the bathtub 12 via the outgoing pipe 4 again as described above. At this time, outside air flows into the air chamber 6 through the air pipe 8 and is used for the mixing. If the air pipe 8 is provided with an on-off valve 21 and closed as necessary,
Only hot water can be circulated without mixing air.

In the above operation, the ejection direction of the mixed flow of hot water and air can be adjusted as appropriate by changing the direction of the mixed flow nozzle section 5 as shown by the imaginary line in Fig. 2. Even if the direction of the mixed flow nozzle part 5 is changed as shown in FIG. The hot water spewing out from 2 is not slowed down, and the amount of air sucked in does not change. Therefore, hot water sufficiently mixed with air can be spouted without being affected by the direction of the mixed flow nozzle section 5.

Particularly in the present invention, as described above, the attachment of the mixed flow nozzle section 5 to the bathtub 12 is
2, so even if the wall thickness of the bathtub 12 is different and the distance between the flange-like tightening part 29 of the tightening cylinder member 10 and the tightening part 30 of the outer cylinder member 7 is different, The attachment position of the mixed flow nozzle section 5, that is, the protrusion length of the mixed flow nozzle section 5 from the inner wall of the bathtub 12 does not change, and can be kept at an appropriate protrusion length at all times.
That is, the difference in distance due to the difference in wall thickness of the bathtub 12 can be absorbed by the fitting portions of the one side cylinder 1a and the other side cylinder 1b sliding. Furthermore, in the above configuration, the mixed flow nozzle section 5 can be easily replaced as necessary.

Next, the details of the illustrated embodiment will be described. First, the one side cylinder 1a is fixed to the outer cylinder member 7 by, for example, a screw portion 22 or brazing. Also, the other side cylindrical body 1
b has one side configured as a fitting portion to the one side cylinder 1a, and the other side configured with a large diameter portion 23 that supports the spherical support portion 11 formed on the rear side of the mixed flow nozzle portion 5. are doing. A support lid 26 having a support opening 25 with a diameter larger than the outer diameter of the jetting part of the mixed flow nozzle part 5 is fixed to the flange part 24 of the large diameter part 23. 11
At the same time, the rear surface of the spherical support part 11 is supported by an O-ring 27 interposed between it and the large diameter part 23 on the other side of the inner cylinder member 1.

In the above configuration, a packing 31, a washer, etc. are appropriately interposed between the flange-like tightening portion 29 of the tightening cylinder member 10 and the inner wall of the bathtub 12, but in the illustrated example, A part of the attachment member 33 of the cap 32 also serves as a washer. A cap 32 is attached to the front side of the attachment member 33, and this cap 32 also serves as a holding member for the other side cylindrical body 1b. The cap 32 may be attached elastically to the front side of the attachment member 33 or may be attached by screwing.

On the other hand, in the illustrated example, the air chamber 6 is configured such that the tightening cylinder member 10 is screwed onto the outer cylinder member 7 and tightened, and the fitting portion of the other side cylinder 1b is fitted into the one side cylinder 1a. In addition to this, there is a partition wall constructed between the inner cylinder member 1 and the outer cylinder member 7, as shown by the imaginary line in the figure. Of course, the air chamber 6 may be configured by the air chamber 34 at all times.

(Effects of the Invention) As described above, the present invention provides a driving flow nozzle section on one side of the inner cylinder member, sucks air from the surrounding air chamber and mixes it, and connects the mixed flow nozzle section to the inner cylinder member. By supporting the other side of the member so that the direction can be changed, the mixed flow of hot water and air can be adjusted and ejected in an appropriate direction within the bathtub. Unlike the conventional structure in which it is constructed as one piece and changes its direction in one piece, when the direction is changed, there is no decrease in the amount of air sucked in due to the deceleration of the hot water ejected from the outgoing pipe. Even if the direction of the nozzle section is changed, the direction of the inner cylinder member itself does not change, and the relative relationship between the inner cylinder member and the outgoing pipe does not change. Therefore, there is an effect that hot water sufficiently mixed with air can be spouted without being affected by the method of the mixed flow nozzle section.

Furthermore, since the present invention has a structure in which the mixed flow nozzle section is attached from the inside of the bathtub, even if the thickness of the wall of the bathtub is different, the attachment position of the mixed flow nozzle section, that is, the protrusion length of the mixed flow nozzle section from the inner wall of the bathtub is fixed. remains the same,
It can be installed at the appropriate protrusion length at all times, and
This has the advantage that the mixed flow nozzle section can be easily replaced if necessary.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing the overall configuration of a bath device using the bath bubble generator of the present invention, and FIG. 2 is a partially cross-sectional explanatory diagram showing the overall configuration of the bath bubble generator of the present invention. FIG. 3 is an explanatory diagram showing the overall configuration of a bath device using a conventional bath bubble generator;
FIG. 4 is a partially cross-sectional explanatory diagram showing the overall configuration of a conventional bath bubble generator. Code, 1... Inner cylinder member, 1a, 1b... Cylindrical body,
2... Drive flow nozzle section, 3... Water heater, 4...
Outgoing pipe, 5... mixed flow nozzle section, 6... air chamber,
7...Outer cylinder member, 8...Air pipe, 9...Suction port,
10... Tightening cylinder member, 11... Spherical support part, 12
... Bathtub, 13 ... Cylinder part, 14 ... Installation port, 15
... Hot water outflow member, 16 ... Return pipe, 17 ... Short pipe, 18 ... Hot water pump, 19 ... Mixing space, 2
0...Heat exchanger, 21...Opening/closing valve, 22...Thread part, 23...Large diameter part, 24...Flange part, 25
... Support port, 26 ... Support lid, 27 ... O-ring, 28 ... Stopper part, 29, 30 ... Flange-shaped tightening part, 31 ... Packing, 32 ... Cap, 33 ... Mounting member, 34...Partition wall.

Claims (1)

[Claims] 1. A driving flow nozzle section is configured on one side of the inner cylindrical member, and an outgoing pipe connected to the water heater is connected to the upstream side of the driving flow nozzle section, and a driving flow nozzle section is configured on the other side of the inner cylindrical member. The mixed flow nozzle part is supported so as to be changeable in direction, and an outer cylinder member forming an air chamber between the inner cylinder member and the outer cylinder member is attached to the outside of the inner cylinder member, and an air pipe is connected to the outer cylinder member. The cylindrical member is formed with a suction port that communicates the downstream space near the driving flow nozzle portion with the air chamber, and a tightening cylindrical member is screwed onto the other side of the outer cylindrical member. , the inner cylinder member is constructed by slidably fitting one side cylinder and the other side cylinder, the one side cylinder being fixed to the outer cylinder member, and the other side cylinder being tightened. A bubble generator for a bath, characterized in that it is configured to be fixed to a cylindrical member. 2. The mixed flow nozzle part described in item 1 is characterized in that a spherical support part is formed on the rear side thereof, and this spherical support part is slidably supported on the other side of the inner cylinder member. Air bubble generator for bath.