JP2567058Y2 - Bubble generating nozzle - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bubble generating nozzle for jetting bubble-containing water called jet water in which bubbles are mixed in bath water in a bathtub.

[0002]

2. Description of the Related Art In recent years, bathtubs equipped with an air bubble generator have become widespread as health orientation has increased. Among them, most use a jet pump for the bubble generator, which mixes water and air and vigorously jets out bubble-mixed water called jet water into the bathtub to massage. The effect can be obtained. As shown in FIG. 4, a liquid jet nozzle 5 and a gas-liquid mixed water jet nozzle 4 are disposed in the casing 3 so as to face each other in the front and rear directions.
The air from the gas supply pipe 7 is mixed with the liquid from the liquid supply pipe 6 to be jetted out, and the gas / liquid mixed water is jetted from the gas / liquid mixed water jet nozzle 4 into the bathtub 1 as jet water. ing.

[0003]

However, in the above-described conventional example, the liquid supply pipe 6 and the gas supply pipe 7 are attached to the casing 3 so as to be adjacent to each other in the same direction. The casing 3 needs a length for connecting the liquid supply pipe 6 and the gas supply pipe 7 so as to be adjacent to each other, so that the length dimension L ₁ of the casing 3 becomes longer and the casing 3 is attached to the side wall 2 of the bathtub 1. becomes large dimension L ₂ jumping out of the bathtub 1 rear surface side, the tub 1 and the construction method are bubble generating nozzle attached it is disadvantageously limited.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a bubble generating nozzle which can be attached to a bathtub while reducing the size of the protrusion to the backside of the bathtub.

[0005]

According to the present invention, in order to achieve the above object, a gas-liquid mixed water jet nozzle 4 is housed and arranged at the front end of a casing 3 whose front end is attached to a side wall 2 of a bathtub 1. A liquid jet nozzle 5 is housed and arranged at the rear end side of the casing 3 so as to be located behind the gas-liquid mixed water jet nozzle 4, and the liquid supplied from a liquid supply pipe 6 connected to the casing 3 is supplied to the liquid jet nozzle. The gas supplied from the gas supply pipe 7 connected to the casing 3 while being ejected from the liquid jet nozzle 5 is mixed with the jet water from the liquid jet nozzle 5, and the gas-liquid mixed water into which the gas is mixed is forward of the liquid jet nozzle 5. The liquid jet nozzle 5 housed in the casing 3 in the vicinity of the gas-liquid mixed water jet nozzle 4 in the bubble generating nozzle which jets into the bathtub 1 from the gas-liquid mixed water jet nozzle 4 arranged in
In the direction of the center line of the gas-liquid mixed water jet nozzle 4.
The liquid supply pipe 6 is disposed so as to overlap with the supply pipe 6, and is located at a position shifted in the circumferential direction with respect to a connection portion of the liquid supply pipe 6 to the casing 3.
A liquid supply pipe in the center line direction of the liquid mixed water jet nozzle 4
The gas supply pipe 7 is connected to the casing 3 at a position overlapping with 6 .

Further, a cylindrical rectifying protruding piece 8 may be provided so as to protrude rearward from the rear end peripheral edge of the liquid ejection nozzle 5.

[0007]

When the liquid from the liquid supply pipe 6 is sent to the gas-liquid mixed water jet nozzle 4 via the liquid jet nozzle 5 and the liquid is sent from the liquid jet nozzle 5 to the mixed air jet nozzle 4, the gas Gas is mixed into the liquid from the supply pipe 7, and the gas-liquid mixed water is jetted from the gas-liquid mixed water jet nozzle 4 into the bathtub 1 as jet water. Then, the liquid jet nozzle 5 housed and disposed in the casing 3 in close proximity to the gas-liquid mixed water jet nozzle 4 is positioned in the direction of the center line of the gas-liquid mixed water jet nozzle 4.
And the casing 3 is disposed so as to overlap with the liquid supply pipe 6.
Position shifted in the circumferential direction with respect to the connection portion of the liquid supply pipe 6 to the
In the direction of the center line of the gas-liquid mixed water jet nozzle 4
Since the gas supply pipe 7 is connected to the casing 3 at a position overlapping with the body supply pipe 6 , the liquid supply pipe 6, the liquid ejection nozzle 5, the gas supply pipe 7, and the gas-liquid mixed water ejection nozzle 4 are close to each other. is allowed can be arranged, which can reduce the length L ₁ of the casing 3, it is possible to reduce the dimension L ₂ jumping out of the bathtub 1 rear surface side when mounted to the bathtub 1.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on illustrated embodiments. As shown in FIG. 3, the bubble generating nozzles are attached to a plurality of locations on the side wall 2 of the bathtub 1 and are provided at the inlet 9.
The bath water in the bathtub 1 that has been inhaled is jetted into the bathtub 1 again as jet water containing air bubbles. That is, in FIG.
Is circulated by a pump 11, and a switching valve 1 for adjusting the strength of a jet from a water supply pipe 12.
The liquid flows into the bubble generation nozzle from the foot-side discharge pipe 14 or the back-side discharge pipe 15 serving as the liquid supply pipe 6 via 3. The bath water flowing into the bubble generation nozzle is mixed with the air sucked from the air suction port 16 through the gas supply pipe 7 at the bubble generation nozzle, and a gas-liquid mixed flow is injected into the bathtub 1. ing.

As shown in FIG. 1, the bubble generating nozzle has a liquid jet nozzle 5 and a gas-liquid mixed water jet nozzle 4 inside a casing 3. At one end of the casing 3, an attachment portion 17 for attaching the casing 3 to the side wall 2 of the bathtub 1 is provided. At the other end, a water inlet 18 to which the liquid supply pipe 6 is connected is provided. An air supply port 19 to which the gas supply pipe 7 is connected is provided at an intermediate portion of the casing 3 so as to be located between the mounting portion 18 and the mounting portion 17. The liquid ejection nozzle 5 mounted in the casing 3 is disposed in a cylinder 20 provided between the water inlet 18 and the air supply port 19, and the gas-liquid mixed water ejection nozzle 4 is located forward of the liquid ejection nozzle 5. Is disposed at the tip of the casing 3 provided with the mounting portion 17.

The liquid ejecting nozzle 5 has a flange 5b protruding outward from the outer peripheral surface of the cylindrical body 5a, and a screw portion 5c is provided at the outer peripheral end of the flange 5b. Screw part 2 provided at the rear end of
It is mounted in the cylinder 20 by screwing it to Oa. Here, the rear end of the cylinder 20 arranged in the casing 3 is located below the connection portion of the liquid supply pipe 6, and the liquid ejection nozzle 5 installed at the rear end of the cylinder 20 It is arranged below the supply pipe 6. An O-ring 21 is provided between the cylinder 20 and the casing 3.

The gas-liquid mixed water jet nozzle 4 has a substantially spherical bulging portion 4a at its base, and the bulging portion 4a is fitted into a fitting recess 22 provided between the casing 3 and the cylinder 20. It is attached to the casing 3 so as to be inserted. An O-ring 24 is provided at the opening edge of the fitting recess 22 by a pressing member 23. The O-ring 24 holds the spherical bulging portion 4a rotatably. Direction can be changed freely. A cover 25 is screwed into the opening at the tip end of the casing 3, and the pressing member 23 is pressed and fixed by attaching the cover 25.

An air supply port 19 arranged so as to face the outlet of the liquid jet nozzle 5 has a position substantially 90 ° along the circumferential direction of the casing 3 with respect to a connection portion of the liquid supply pipe 6 to the casing 3. The gas supply pipe 7 connected to the air supply port 19 is disposed so as to be shifted.
The liquid supply pipe 6 is connected to the casing 3 so as to be displaced along the circumferential direction with respect to the connection portion of the liquid supply pipe 6. That is, the liquid supply pipe 6 and the gas supply pipe 7 are displaced along the circumferential direction of the casing 3 so that the casing 3
Being adapted to be connected to the casing 3 so as to close without such or hit each other because they are adapted to be connected to, take longer length dimension L ₁ of the casing 3 The liquid supply pipe 6 and the gas supply pipe 7 can be connected to the casing 3 without the need.

A flange 3a is projected outward from one end of the casing 3 provided with the gas-liquid mixed water jet nozzle 4, and a nut 26 screwed to the flange 3a and the tip of the casing 3 is provided. The casing 3 is attached to the side wall 2 by sandwiching the side wall 2 of the bathtub 1, and an attachment portion 17 is configured by the flange 3 a and the nut 26. A packing 27 having a U-shaped cross section is attached to the opening edge of the opening provided in the side wall 2 of the bathtub 1 to which the casing 3 is to be connected and fixed. It is supposed to. Here, since the liquid supply pipe 6 and the gas supply pipe 7 are connected to the casing 3 so as to be displaced along the circumferential direction of the casing 3, they may hit each other. The casing 3 is connected to the casing 3 so as to be close to each other, and the length L ₁ of the casing 3 can be shortened. so that the can be placed bathtub 1 by reducing the pop-out dimension L _2.

When water from the water inlet 9 is jetted from the liquid jet nozzle 5 toward the gas-liquid mixed water jet nozzle 4, the water jets from the liquid jet nozzle 5 to the bath from the air supply port 19. Air is mixed into the water, and jet water mixed with bubbles is jetted from the gas-liquid mixed water jet nozzle 4 into the bathtub 1 with vigor. FIG. 2 shows another embodiment. In this embodiment, a cylindrical rectifying protruding piece 8 is provided so as to project rearward from a rear end peripheral edge of the liquid ejection nozzle 5. The bath water sent from the liquid supply pipe 6 to the liquid ejection nozzle 5 by the rectifying projection 8 is rectified and then ejected from the liquid ejection nozzle 5.

A rectifying projection 8 integrally formed at the rear end of the liquid ejection nozzle 5 projects into a space a through which bath water flowing from the liquid supply pipe 6 passes. As shown by the middle arrow, the bath water supplied to the space a vigorously is rectified by the rectifying projection 8 and then sent to the liquid jet nozzle 5. Since the bath water is sent straight toward the gas-liquid mixed water jet nozzle 4, it is possible to prevent the amount of gas mixed from the gas supply pipe 7 caused by the disturbance of the flow of the bath water from being impaired. , and it is possible to reduce the pressure loss of the liquid so can be ejected efficiently bubbles even those to suppress the dimension L ₂ jumping out to the back surface side of the bathtub 1 into the bathtub 1 ing.

[0016]

According to the present invention, as described above, the liquid ejection nozzle housed and disposed in the casing in close proximity to the gas-liquid mixed water ejection nozzle is arranged in the center line direction of the gas-liquid mixed water ejection nozzle.
It is arranged so as to overlap with the liquid supply pipe, and it is located at a position shifted in the circumferential direction with respect to the connection part of the liquid supply pipe to the casing.
The liquid supply pipe in the direction of the center line of the liquid mixed water jet nozzle
Since overlapping positions is connected a gas supply pipe to the casing, and connected to the casing in close proximity to the liquid supply pipe and the gas supply pipe, it is possible to reduce the length of Ke pacing thing It is possible to reduce the size of the protrusion from the back surface of the bathtub and attach it to the bathtub.

Further, if a cylindrical rectifying projection is projected rearward from the rear end peripheral edge of the liquid ejection nozzle, the liquid ejection nozzle is arranged below the liquid supply pipe. Even if the flow is rectified by the rectifying projection and the liquid is sent to the liquid jet nozzle, the jet from the liquid jet nozzle can be jetted straight, without impairing the amount of gas mixed in from the gas supply pipe. However, even if the pressure loss of the liquid can be reduced and the size of the liquid flowing out to the back side of the bathtub can be suppressed, bubbles can be efficiently ejected.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIGS. 2A and 2B show another embodiment, in which FIG. 2A is a sectional view, and FIG. 2B is a partial sectional view taken along line AA in FIG.

FIG. 3 is a perspective view of a bathtub showing an arrangement state of a bubble generation nozzle.

FIG. 4 is a sectional view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bathtub 2 Side wall 3 Casing 4 Gas-liquid mixed water ejection nozzle 5 Liquid ejection nozzle 6 Liquid supply pipe 7 Gas supply pipe 8 Rectifying projection

Claims (2)

(57) [Scope of request for utility model registration] 1. A gas-liquid mixed water ejection nozzle is housed and arranged at a front end of a casing whose front end is attached to a side wall of a bathtub, and is disposed at a rear end side of the casing so as to be located behind the gas-liquid mixed water ejection nozzle. The liquid ejection nozzle is housed and arranged, and the liquid supplied from the liquid supply pipe connected to the casing is ejected from the liquid ejection nozzle, and the gas supplied from the gas supply pipe connected to the casing is ejected from the liquid ejection nozzle. The gas-liquid mixed water mixed with this gas is blown into the bathtub from the gas-liquid mixed water jet nozzle disposed in front of the liquid jet nozzle, and is close to the gas-liquid mixed water jet nozzle. The liquid jet nozzle housed in the casing in the direction of the center line of the gas-liquid mixed water jet nozzle.
It is arranged so as to overlap with the liquid supply pipe, and it is located at a position shifted in the circumferential direction with respect to the connection part of the liquid supply pipe to the casing.
The liquid supply pipe in the direction of the center line of the liquid mixed water jet nozzle
A bubble generating nozzle formed by connecting a gas supply pipe to a casing at an overlapping position . 2. The bubble generating nozzle according to claim 1, wherein a cylindrical rectifying projection is projected rearward from a rear end peripheral edge of the liquid ejection nozzle.