JPH0351425B2 - - 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, a water heater c is provided 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. Recently, there has been a system in which the hot water inflow member e is provided with a bubble generating mechanism i using an ejector or the like, from which hot water mixed with air bubbles can be spouted into the bathtub d.

An example of such a bubble generating 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 fixed.

(Problems to be Solved by the Invention) In this way, the conventional bubble generating mechanism is configured such that only the spouting member for hot water mixed with bubbles, that is, the hot water inflow member e, is integrated, and the return pipe h connected to the hot water supply device c is Since the hot water outflow member g that connects the two is constructed separately, it is necessary to form two attachment ports in the bathtub d corresponding to the hot water inflow member e and the hot water outflow member g, respectively. In addition, in the conventional mechanism, since the single driving flow nozzle part n is configured on the central axis of the mixing space o, the ejected flow is difficult to approach the inner wall of the mixing space o, and a sufficient flow velocity is not obtained. Therefore, sufficient air suction effect is obtained.

It is an object of the present invention to solve the problems related to the present invention.

(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, the driving flow nozzle part 2 is divided into a plurality of parts and eccentrically arranged on one side of the inner cylinder member 1, and the mixed flow nozzle part 3 is formed on the other side. An outer cylinder member 5 is attached to the outside of the member 1 so as to form a space 4, and protrusions 6, 6' are provided on at least one side of the outer cylinder member 5 and the inner cylinder member 1 so as to protrude toward the other side. Configuring this protrusion 6,
6' divides the space 4 into an air chamber 7 corresponding to one side of the inner cylindrical member 1 and a water chamber 8 corresponding to the other side, and the inner cylindrical member 1 is provided with the driving flow nozzle section. A suction port 10 is formed to communicate the air chamber 7 with the space 9 near the downstream side of the outer cylinder member 5, and a water flow gap 11 is formed between the outer cylinder member 5 and the inner cylinder member 1 on the other side. The constituting tightening cylindrical member 12 is screwed together, and an outgoing pipe 14 from the hot water supply device 13 is connected to the upstream side of the driving flow nozzle section 2, a return pipe 15 connected to the hot water supply device 13 is connected to the water chamber 19, and a return pipe 15 is connected to the air chamber 7. An air pipe 16 is connected thereto.

A cap 18 having a water communication hole 17 can be attached to the aforementioned tightening cylindrical member 12, and in this case, a tightening tool engagement recess 19 which also serves as water communication is formed in the cap 18, so that the water is connected to the cap 18. Hot water in the bathtub 20 can flow out through the communication hole 17 and the recess 19. In addition, the cap 18 and the tightening cylinder member 1
An appropriate filter 21 can be interposed between the two.

Further, the mixed flow nozzle section 3 is configured such that a spherical support section 22 formed on its rear side is supported by front and rear spherical support annular members 23 and 24 on the other side of the inner cylindrical member 1 so that the direction thereof can be changed. In this case, an O-ring 25 can be interposed between the spherical support annular member 24 on the rear side and the end of the inner cylinder member 1.

(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, a mounting opening is formed in advance slightly larger than the outer diameter of the cylindrical portion of the tightening cylindrical member 12 on the wall of the bathtub 20, and the inner cylindrical member 1 is inserted into the mounting opening 26 from the outside of the bathtub 20. insert. In this state, the tightening cylindrical member 12 is inserted into the attachment port 26 from inside the bathtub 20, screwed onto the outer cylindrical member 5, and tightened. At this time, the flange portion 27 of the tightening cylinder member 12 and the bathtub 2
Washers 28, gaskets 29, etc. are appropriately installed between the walls of 0. In this way, the tightening cylinder member 12
The flange portion 27 and the end portion of the outer cylinder member 5 sandwich the wall of the bathtub 20 around the attachment opening 26, and are in the attached state. Thereafter, the outgoing pipe 14, the return pipe 15, and the air pipe 16 of the water heater 13 are connected to be ready for use.

Therefore, the hot water flowing into one side of the inner cylinder member 1 via the outgoing pipe 14 by the hot water pump 30 of the water heater 13 is ejected from the driven flow nozzle part 2 into the mixing space 9 on the downstream side thereof. The air in the air chamber 7 is sucked in through the suction port 10.

In this case, the driving flow nozzle section 2 is connected to the mixing space 9.
Since it is configured to be eccentric to the mixing space 9, the jet flow of hot water comes into contact with the inner wall of the mixing space 9 on the eccentric side, and then spreads, so that it is larger and faster than when it is not eccentric. Since this driving flow nozzle part is in contact with the inner wall and is divided into a plurality of parts, the range of the mixing space 9 that can accommodate the jet flow of hot water at a high flow rate is wide, and therefore a sufficient air suction effect can be obtained. It will be done.

In this way, the hot water that is the driving flow and the air that is the secondary flow flow in the inner cylinder member 1 toward the other side while gradually mixing, and after sufficient mixing, the mixed flow nozzle part 3
It squirts into the bathtub 20 from the inside. On the other hand, the hot water in the bathtub 20 reaches the water chamber 8 through the flowing water gap 11 between the tightening cylinder member 12 and the inner cylinder member 1, and from there the return pipe 15
The water then returns to the suction side of the hot water pump 30 of the water heater 13, where it is circulated. and the hot water pump 30
The hot water pressurized is appropriately heated in a heat exchanger 31,
It flows into the bathtub 20 via the outgoing pipe 14 again.

In the present invention, the member that mixes air and ejects the mixture with air bubbles and the member that causes the hot water in the bathtub 20 to flow out to the return pipe 15 are integrated, so the bathtub 20 It is only necessary to form a single attachment port 26, and manufacturing and attachment can be easily performed, resulting in an effect that costs can be reduced.

Next, the details of the illustrated embodiment will be described. First, the protrusions 6, 6' are formed on both the outer cylinder member 5 and the inner cylinder member 1, and an O-ring 32 is interposed between the abutting portions of the protrusions 6 and 6'. I am wearing it. In addition, the protrusions 6 and 6' are
It may be configured only on either the outer cylinder member 5 or the inner cylinder member 1.

A cap 18 having a water communication hole 17 is attached to the tightening tube member 12, and a filter 21 is interposed between the cap 18 and the tightening tube member 12. The cap 18 can be attached by engaging and rotating an inclined protrusion 34 formed on the circumferential edge of the tightening cylinder member 12 with a protrusion 33 provided inside the circumferential edge of the cap 18 . On the other hand, the tightening cylindrical member 12 is provided with a recess 23 for engaging a tightening tool which also serves as water communication, so that the hot water in the bathtub 20 flows together with the water communication hole 17.

Next, the mixed flow nozzle part 3 supports the spherical support part 22 formed on the rear side thereof on the other side of the inner cylinder member 1 by the front and rear spherical support annular members 23 and 24, so that the direction can be changed. Further, an O-ring 25 is interposed between the rear spherical support annular member 24 and the end of the inner cylinder member 1, and this O-ring 25 is used when the supporting force of the spherical support annular members 23 and 24 becomes weak. The elastic force maintains a predetermined sealing effect.

(Effect of the invention) As described above, the present invention sucks air and mixes it,
Since the component that spouts out air bubbles and the component that drains the hot water in the bathtub into the return pipe are integrated, it is only necessary to form a single installation port on the bathtub, which reduces manufacturing and production costs. This has the advantage that installation can be easily performed and costs can be reduced. In addition, in the present invention, the driving flow nozzle part is divided into a plurality of parts and is eccentric to the mixing space on the downstream side, so that the flow velocity of the hot water jet flow in the part that contributes to air suction is lower than in the past. can be made larger, and therefore a sufficient air suction effect can be obtained,
This has the effect of generating sufficient bubbles.

[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, 2... Drive flow nozzle section, 3... Mixed flow nozzle section, 4... Space, 5...
Outer cylinder member, 6, 6'... protrusion, 7... air chamber, 8
...Water chamber, 9...Space, 10...Suction port, 11...
...Flowing water space, 12... Tightening tube member, 13... Water heater, 14... Outgoing pipe, 15... Return pipe, 16
... Air pipe, 17 ... Water communication hole, 18 ... Cap, 19 ... Recess, 20 ... Bathtub, 21 ... Filter, 22 ... Spherical support section, 23, 24 ... Spherical support annular member, 25 ...O-ring, 26...Mounting port, 27...Flange part, 28...Washer,
29...Patsukin, 30...Hot water pump, 31...
...Heat exchanger, 32...O ring, 33...Protrusion,
34...Slanted ridge.

Claims (1)

[Scope of Claims] 1 A driving flow nozzle part is divided into a plurality of parts and eccentrically arranged on one side of the inner cylinder member, a mixed flow nozzle part is formed on the other side, and a space is provided outside the inner cylinder member. an outer cylindrical member is attached so as to form a space, and a protrusion is formed on at least one side of the outer cylindrical member and the inner cylindrical member, the protrusion protruding toward the other side, and the protrusion allows the space to be connected to the inner cylindrical member. The cylindrical member is divided into an air chamber corresponding to one side and a water chamber corresponding to the other side, and the inner cylindrical member has a suction port that communicates the downstream space of the driving flow nozzle portion with the air chamber. At the same time, a tightening cylinder member is screwed to the other side of the outer cylinder member and forms a water flow gap between the inner cylinder member and the other side of the driving flow nozzle part. A bubble generating device for a bath, characterized in that an outgoing pipe from a water heater, a return pipe connected to the water chamber and an air pipe connected to the air chamber are connected. 2. In the device described in paragraph 1, a cap having a water communication hole is attached to the tightening tube member, and
A bubble generator for a bath, characterized in that a concave portion for engaging a tightening tool is formed in the device itself for water communication. 3. A bubble generating device for a bath according to item 2, characterized in that a filter is interposed between the cap and the tightening cylinder member. 4 In the device described in item 1, the mixed flow nozzle part supports a spherical support part formed on the rear side thereof so that the direction can be changed to the other side of the inner cylinder member by the spherical support annular member on the front and rear sides. A bubble generator for a bath characterized by the following configuration. 5 In the device described in item 1, the mixed flow nozzle part has a spherical support part formed on the rear side thereof, and an end of the spherical support annular member on the front and back, and the spherical support annular member on the rear side and the inner cylinder member. A bubble generating device for a bath, characterized in that the device is configured to be supported on the other side of the inner cylinder member so that the direction can be changed by an O-ring interposed between the parts.