JPH04166155A - Jetting nozzle structure of bubble generating bath tub - Google Patents

Abstract

PURPOSE:To enable the mixing of air into a jet flow of a hot bath water sufficiently by allowing air to flow into an air mixing chamber simultaneously in a direction perpendicular to an axis X-X of a nozzle casing and from behind the air mixing chamber in the same direction as that of the axis X-X. CONSTITUTION:An air inflow cylinder 20d provided on an outer circumferential surface of a nozzle casing 20 extending in a direction perpendicular to the axis X-X of the nozzle casing 20 is provided with a male thread part 20i on an external surface thereof and is allowed to have one end of a suction pipe 12a screwed down thereon to connect. A suction pipe connecting section 20e has an air inflow port 20j cut inside to allow the mixing of air into a jetted hot bath water flowing through an air mixing chamber 21d through the air inflow port 20j. Moreover, one end of a branch piping 20m is connected to the air inflow cylinder 20d and the other end of the branch piping 20m is connected to a hot bath water inflow chamber 20p formed in the rear of a cylinder 30. This enables remarkable increase in amount of bubbles mixed into the jetted hot bath water in a bath tub from a jetting nozzle.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a jet nozzle structure attached to a bathtub body in a bubble-generating bathtub.

(B) Prior Art Conventionally, as one type of jet nozzle used in a bubble-generating bathtub, there is one that was previously disclosed by the present applicant in Japanese Utility Model Publication No. 14684/1984.

As shown in FIG. 10, such an ejection nozzle essentially includes a nozzle casing 201 whose front end is connected in a watertight manner to an opening in a side wall 200 of the bathtub body, and a neck at the front inside the nozzle casing 201. A throat 202 arranged to be swingable, a jet-forming cylinder 203 formed in the middle of the nozzle casing 201, and a jet-forming cylinder 203 interposed between the jet-forming cylinder 203 and the throat 202 and communicating with the intake pipe 204. It is composed of a connected air mixing chamber 205 and a bath water inflow chamber 207 arranged at the rear of the jet flow forming cylinder 203 and connected to the bath water filling pipe 206 .

With the above configuration, the bath water flowing into the bath water flow room 207 from the bath water filling pipe 206 is ejected into the air mixing chamber 205 through the jet flow forming cylinder 203 by the ejector effect. A negative pressure is generated in 205, and air is drawn from the outside into the air mixing chamber 205 through the intake pipe 204 by the negative pressure, and is mixed into the jet bath water.
Thereafter, the bath water mixed with air bubbles is jetted out into the bath water inside the bathtub body through the throat 202.

(c) Problems to be Solved by the Invention However, such jet nozzles still have the following problems to be solved.

That is, air is mixed into the jet bath water in the air mixing chamber 205 from the bath water inflow chamber 207 to the jet flow forming cylinder 2.
This is due to the ejector effect of the bath water jet into the aeration chamber 205 through 03.

By the way, in order to fully exhibit such an ejector effect, the bath water jetting pressure must be high; if the pressure is low, a sufficient ejector effect cannot be achieved, and as a result, sufficient Air could not be mixed in.

An object of the present invention is to provide a jet nozzle structure for a bubble-generating bathtub that can solve the above problems.

(d) Means for Solving the Problems The present invention provides a bath water circulation system that includes a bath water suction flow path and a bath water forced flow path between a bathtub body and a circulation pump installed outside the bathtub body. A flow path is provided, and the end of the forced bath water flow path is opened into the bathtub body to form a spout nozzle, and an air intake section is branched and connected in the middle of the forced bath water flow path to generate the above-mentioned jet. In a bubble-generating bathtub in which bath water mixed with bubbles can be jetted from a nozzle into the bathtub body, a partition wall is provided in the nozzle casing of the jet nozzle, and an air mixing chamber and a bath water inflow chamber are provided in front and behind the partition wall. The air mixing chamber and the bath water inflow chamber are connected through a jet flow forming channel provided in the partition wall, and the air mixing chamber and the bath water inflow chamber are connected in a direction perpendicular to and in the same direction as the axis of the nozzle casing. This invention relates to a jet nozzle structure in a bubble-generating bathtub, characterized in that air can flow into the air mixing chamber from the rear of the bathtub.

(e) Actions and Effects According to the present invention, the following actions and effects occur.

In the present invention, the jet bath water flowing from the bath water inflow chamber to the aeration chamber through the jet forming channel is not only perpendicular to the axis of the nozzle casing, but also in the same direction as the coaxial line of the aeration chamber. Since the structure allows air to flow into the air mixing chamber from the rear at the same time, even if the jet pressure is low, the amount of air bubbles that are spouted from the jet nozzle into the bath water in the bathtub body can be reduced. can be increased significantly. Therefore, a low-pressure circulation pump can be used, and the bubble-generating bathtub as a whole can be manufactured at low cost.

(F) Example Hereinafter, the structure of the jet nozzle for a bubble-generating bathtub according to the present invention will be specifically explained based on the example shown in the attached drawings.

[Overall Configuration of Bubble Generating Bathtub] First, the overall configuration of a bubble generating bathtub equipped with a jet nozzle according to the present invention will be briefly described with reference to FIGS. 1 and 2.

In FIGS. 1 and 2, A is a bubble-generating bathtub;
It is installed in a unit bath B supported on a concrete slab S via a plurality of supports NIL - along the side wall 4, for example.

The bubble generating bathtub A has foot-side and backspout nozzles 2, 2, and 2 on the front and rear walls of a bathtub body 1 formed in a box shape with an opening on the top surface, respectively.
A total of four 3.3 are provided.

An air intake port 5 forming an air intake portion is provided at the back of the side wall 4 of one example of the unit bath B. The air intake port 5 arranged in the rising air intake pipe 6
, air amount adjustment device 6a, inclined intake pipe 7, distribution pipe 9+
10a+10b, foot side/dorsal side jet nozzle 2, 2
, 3.3 (see FIG. 3).

Further, along the other side wall 11 of the unit bath B, a long functional section 22 for the bubble generating bathtub A is arranged.

The functional unit 12 is provided with a circulation pump P for circulating bath water and a pump driving motor M for driving the circulation pump P.

Moreover, between the circulation pump P and the bubble generating bathtub A,
A bath water circulation flow path is interposed along the bathtub body 1 and the functional unit 12.

That is, the bath water circulation flow path forms a bath water suction flow path for sending bath water from the bath water suction port 13 provided on the side wall of the bathtub body 1 of the bubble-generating bathtub A to the circulation pump P. The suction vibrator 14 and the circulation pump P flow into the bath water inflow chamber 20 of the jet nozzles 2, 2.3.3 provided on the front and rear side walls of the bathtub A.
It is composed of bath water bullet feed pipes 15, 16, and 17 that form a forced bath water flow path for sending bath water into the bath water (see Fig. 3).

[Basic Structure of Ejection Nozzle 1 Next, the basic structure of the ejection nozzle 2.2.3.3, which constitutes the gist of the present invention, will be explained with reference to the accompanying drawings, particularly FIGS. 3 to 7.

Note that the foot-side and transverse jet nozzles 2, 2.3.3 have the same configuration, and the structure of the foot-side jet nozzle 2 will be described below.

As shown in FIG. 3, the foot side spout nozzle 2 is essentially configured to: ■Inside a cylindrical nozzle casing 20 attached in a cantilevered manner to the foot side spout nozzle connection port 1g of the bathtub body 1, ■Bath water a jet forming section 21 that forms the bath water flowing in from the suction vibrator 16 into a jet stream; and (2) mixing air into the bath water in a jet state from the jet forming section 21 by using the ejector effect and the mixing effect of the swirling flow. It is composed of an air mixing part 22, and (1) a throat part 23 that determines the spouting direction of the bath water mixed with air bubbles that is spouted from the air mixing part 22 into the bathtub body 1.

[Configuration 1 of each part of the jet nozzle] Hereinafter, the foot side jet nozzle 2 having the above basic configuration will be referred to as the third jet nozzle.
Each component will be explained in detail with reference to FIGS.

(Nozzle casing) As shown in FIG. 3, the nozzle casing 20 is formed from a long cylindrical body disposed horizontally, and has a female threaded portion 20a formed on the inner surface and a flange portion 2 at the end.
0b and the bathtub mounting portion 20c.
An intake vibe connection part 20e (see Fig. 5) that is connected to the rear of the intake vibe connection part 20e and has an air inflow cylinder part 20d on the outer peripheral surface; Part 2
It is equipped with a bath water bullet conveying vibe connecting part 20g (see FIG. 4) provided with a bath water bullet feeding vibe connection part 20g (see FIG. 4).

Bathtub body 1 of nozzle casing 20 having such a configuration
To explain the mounting structure for 1 in Fig. 3,
h is a ring-shaped gasket fitted around the periphery of the leg side jet nozzle connection port 1g.

Reference numeral 11 denotes a nozzle mounting cylinder that extends from the inside to the outside of the bathtub body 1 by penetrating the jet nozzle connection port 1g to which the ring-shaped gasket 1h is attached. The inner end is provided with an enlarged diameter flange portion 1j, and the outer peripheral surface of the outer end of the bathtub is provided with a male screw portion 1k.

The nozzle mounting cylinder 11 presses the end face of the enlarged diameter flange portion 1j against the inner surface of the ring-shaped packing 1h, and connects the male threaded portion 1k to the nozzle casing 20.
It is screwed into a female threaded portion 20a provided on the inner surface of the bathtub attachment portion 20c in a tight state.

This screwing allows the bathtub attachment part 20c of the nozzle casing 20 to be firmly and watertightly attached to the lower part of the front wall of the bathtub body 1.

Further, the bathtub attachment portion 20c is substantially hidden by a decorative cover 26, which will be described below.

That is, the decorative cover 26 consists of a bathtub side flange part 26a having a size that can hide the enlarged diameter flange part 1j of the nozzle mounting cylinder II, and a cylindrical part 26b that penetrates the spout nozzle connection port 1g. A male threaded portion 26c is formed on the outer peripheral surface of the shaped portion 26b.

Then, connect this male threaded portion 26c to the nozzle casing 20.
A female threaded portion 20I formed on the inner circumferential surface of the front end of the! .

It is removably screwed onto the

Further, the rear end of the decorative cover 260 allows a throat fixing member 25, which will be described later, to be fixed inside the nozzle mounting cylinder 11.

Next, the configuration of the intake pipe connecting portion 20e provided behind the bathtub attachment portion 20c of the nozzle casing 20 will be described.

As shown in FIGS. 3 and 5, the nozzle casing 20
The air inlet cylinder part 20d protrudes from the outer circumferential surface of the nozzle casing 20 in a direction orthogonal to the axis XX of the nozzle casing 20. The air inflow cylinder part 20d is provided with a male threaded part 20i on its outer surface, and one end of the intake vibrator 12a is screwed to the air inflow cylinder part 20d. I can do it.

In addition, as shown in FIGS. 3 and 5, the intake pipe connecting portion 20e has an air inlet 20j formed therein, and air is transferred through the air inlet 20j to reduce the ejector effect and swirl flow. Utilizing the mixing effect caused by this, it can be mixed into the jet bath water flowing in the air mixing chamber 21d.

Furthermore, as shown in FIG. 3, one end of the branch pipe 20m is connected to the air inflow cylinder part 20d, and the other end of the branch pipe 20- is connected to the rear part of the jet flow forming cylinder 30, which will be described later. It is connected in communication with a bath water inflow chamber 20p formed in .

With this configuration, a part of the air sucked from the air intake port 5 can flow into the aeration chamber 2Id not only through the air inlet 203 but also through the branch pipe 20-.

Note that in the figure, m indicates the direction of air inflow.

In addition, in Figures 3, 4, and 6, 20g is
This figure shows a bath water filling vibe connection part, and a bath water inflow cylinder part 20f extending in a direction orthogonal to the axis XX of the nozzle casing 20 is attached to the lateral wall of the connection part 20g. Further, a bath water filling pipe 16 is connected in a watertight manner and removably to the bath water inflow cylinder part 20f, and a bath water inlet 20k is formed inside thereof.

The bath water inlet 20 is connected in communication with a bath water inflow chamber 20p formed at the rear of a jet flow forming cylinder 30, which will be described later.

In addition, in the figure, arrow n indicates the inflow direction of bath water.

(Throat Portion) Next, the specific configuration of the throat portion 23 will be described with reference to FIG. 3.

The throat part 23 is substantially arranged in the front part of the nozzle casing 20, and includes a throat 24 having a jet flow path formed therein, and a throat fixing member 25 that supports the throat 24 so as to be able to swing freely. and a throat concave support surface 30e formed at the front of the jet-forming cylinder 30 disposed in the center of the nozzle casing 20.

The throat 24 has a spherical throat base 24a whose outer circumferential surface is supported within a throat concave support surface 30e formed on the front inner surface of the jet flow forming cylinder 30 so as to be swingable in vertical and horizontal directions, and and a cylindrical throat tip 24b whose diameter is smaller than the throat base 24a, and the throat tip 24b can be connected to the base 24 by manual operation.
The swing can be adjusted in any direction, up, down, left or right, centering on point a.

Moreover, since a certain sliding resistance is provided in advance between the outer circumferential surface of the throat base 24a and the throat concave support surface 30e of the jet flow forming cylinder 30, the throat 24 is held at an arbitrary swing angle position. can do.

(Air Mixing Unit) Next, the configuration of the air mixing unit 22 will be specifically described with reference to FIGS. 3 and 5.

As described above, the intake pipe connecting portion 20e of the nozzle casing 20 has an air inlet 20j formed therein, as shown in FIGS. 3 and 5.

On the other hand, the central reduced diameter portion 30c of the jet flow forming cylinder 30 disposed at a position corresponding to the intake pipe connecting portion 20e is the fifth
As shown in the figure, a plurality of inner air inlets 30d are provided.

An annular air communication path 30g is formed between the nozzle casing 20 and the jet flow forming cylinder 30.

With this configuration, air is passed through the air inlet 20j provided in the nozzle casing 20, the annular air communication path 30e, and the inner air inlet 30d formed between the plurality of connecting rods 30h provided in the jet flow forming cylinder 30, To uniformly and effectively mix air from the entire circumference into the jet bath water flowing in the air mixing chamber 21d formed in the jet forming cylinder 30 by using the mixing effect of the ejector effect and the swirling flow. I can do it.

In addition, a branch pipe 20■ led out from the air inflow cylinder part 20d
As shown in FIG. 3, one end of the nozzle casing 20
The rear wall 20Q of the rear wall 20Q is connected to the same opening.

A cylindrical air jet portion 2 extends forward from the opening.
The tip of 0s faces a jet flow forming channel 30b which will be described later.

With this configuration, as shown in FIG. 8, the air from the air intake port 5 is transferred not only to the air inlet 20j but also to the branch pipe 20m → the cylindrical air jetting part 20s → the jet forming channel 30.
The bath water can also flow into the bath water inflow chamber 20p through the bath water inflow chamber 20p.

In this case, by not only having an ejector effect but also actively mixing a part of the air into the bath water flowing through the bath water inflow chamber 20p and the jet flow forming channel 30b, even if the jet pressure is low, the The amount of air bubbles mixed into the hot water jetted into the hot water body 1 can be significantly increased.

(Jet Formation Section) Next, referring to FIGS. 3 and 5, the configuration of the jet formation section 21 will be specifically described. It consists of a jet flow forming channel 30b provided in the partition wall 30a, and a bath water inflow chamber 20p provided at the rear of the partition wall 30a.

The rear end opening of the jet flow forming flow path 30b is connected to the bath water flow room 2.
0p, and its front end opening is connected to the air mixing chamber 2.
It communicates with 1d.

The jet flow forming channel 30b has a diameter smaller than the inner diameter of the air mixing chamber 21d in order to generate an ejector effect, and also has a diameter smaller than the inner diameter of the air mixing chamber 21d in order to generate an ejector effect. The diameter is made smaller than the diameter of the bath water inflow chamber 20p.

On the other hand, the bath water inlet chamber 20p has a circular cross section, as shown in FIG.

With this configuration, as shown in FIG.
The bath water flowing into the inflow chamber 20p forms a bath water swirl flow a along the inner circumferential surface of the inflow chamber 20p, and then forms a bath water swirl flow a1 in the aeration chamber 21d through the jet forming channel 30b. It will be squirted.

As a result, negative pressure is generated within the air mixing chamber 21d,
Air can be effectively mixed into the bath water swirl flow a1.

Moreover, the air supplied from the branch pipe 20m is also mixed in due to the ejector effect of the negative pressure generated within the jet flow forming channel 3Ob.

[Operation of the bubble-generating bathtub equipped with the above-mentioned jet nozzle] Next, the jet nozzle 2, 2゜3.3 comprising the above-mentioned configuration
A method of using the bubble-generating bathtub A equipped with the following will be explained.

Operation panel 41 attached to one side tilting wall 4 of unit bath B
Press the operation button 42 to drive the circulation pump P.

By driving the circulation pump P, bath water is sucked into the circulation pump P from the bath water suction port 13 via the bath water suction pipe 14, and then the bath water is normally transferred from the circulation pump P to the bath water advance vibrator 16. .17, the bath water is injected into the bath water inflow chamber 20p, and a bath water swirl flow is formed.

This swirling flow of bath water is ejected into the air mixing chamber 21d through the jet flow forming cylinder 30, and at this time, a negative pressure is generated in the air mixing chamber 2Id due to the ejector effect, and this negative pressure causes the air to flow from the outside. Air is sucked into the air mixing chamber 21d through the intake pipe 8 and mixed into the jet bath water, and then through the throat 24, the bubble-mixed bath water is jetted out into the bath water inside the bathtub body l. It turns out.

In the operation of the bubble-generating bathtub A, as described above, as shown in FIG.
The air flows into the bath water inflow chamber 20p through the cylindrical air jetting portion 20s and the jet flow forming channel 30b due to the ejector effect.

Even if the ejection pressure is low, the amount of bubbles mixed into the ejected bath water ejected into the bath water main body 1 can be significantly increased.

By controlling the amount of air in the orthogonal direction and the amount of air in the same direction, it is possible to enjoy a wide variety of blowing modes.

Further, FIG. 9 shows another embodiment. In this embodiment, the cylindrical air jet section 1 is substantially connected to the bath water inflow chamber 120p.
20s is in the same direction as the axis *X-X of the nozzle casing 120.

In this embodiment as well, air can be mixed into the spouting bath water through the two wave paths, and even if the jetting pressure is low,
It is possible to significantly increase the amount of air bubbles mixed into the jetted bath water spouted into the bath water body l.

The structure of the ejection nozzle according to this embodiment has been explained above regarding the ejection nozzle 2.2, but
The jet nozzle 2.2 is constructed in the same manner as the jet nozzle 2.2, and has the same effect.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the overall configuration of a unit bath in which a bubble generating bathtub equipped with a jet nozzle according to the present invention is installed;
Fig. 2 is an end view of the bubble generating bathtub, Fig. 3 is a cross-sectional front view of the same jet nozzle, Fig. 4 is a view taken along the line I-1 in Fig. 3,
5 and 6 are cross-sectional views taken along lines ■-■ and mm in FIG.
FIG. 9 is an explanatory diagram showing how air is mixed into the bath water at the jet nozzle, FIG. 9 is an explanatory diagram showing how air is mixed into the bath water at the jet nozzle according to another embodiment, and FIG. FIG. 2 is a cross-sectional front view of a conventional jet nozzle. In the figure, A: Bubble generating bathtub B: Unit bath M: Pump driving motor P: Circulation pump L: Bathtub body 2.2, 3.3: Spout nozzle 14: Bath water suction vibrator 15, 16.17: Bath water Forced feed vibrator 16a bifurcated piping 20: nozzle gauging 20m: branch piping 20p: bath water inflow chamber 21d: air mixing chamber 30: jet-forming cylinder 30a: partition wall 30b = jet-forming channel

Claims (1)

[Claims] 1. Between the bathtub body (1) and a circulation pump (P) installed outside the bathtub body (1), there is a bath water suction flow path and a bath water forced flow flow path. A bath water circulation flow path (D) is provided, and the end of the forced bath water flow path is opened into the bathtub body (1) and a spout nozzle (
2) In addition to (3), an air intake part is branched and connected in the middle of the bath water forced flow path, and the above-mentioned jet nozzles (2) and (3) are connected.
In a bubble-generating bathtub that is capable of spouting bathwater with more bubbles into the bathtub body (1), a partition wall (30a) is provided in the nozzle casing (20) of the spout nozzle (2) (3), and the partition wall (30a), an air mixing chamber (21d) and a bath water inflow chamber (20
p), the air mixing chamber (21d) and the bath water inflow chamber (20p) are communicated through a jet flow forming channel (30b) provided in the partition wall (30a), and the nozzle casing (20) The direction perpendicular to the axis (X-X) and the axis (
A jet nozzle structure in a bubble generating bathtub characterized in that air can flow into the aeration chamber simultaneously from the rear of the aeration chamber (21d) in the same direction as X-X).