JPH09276162A - Electric air bubble generator for bathtub - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a manufacture cost and to shorten assembly time by turning the venturi part of a hot water jetting part to a shape capable of integrally resin-molding a venturi pipe and a venturi case in the electric air bubble generator for a bathtub of a bathtub attachment type. SOLUTION: In this electric air bubble generator for the bathtub attached to the bathtub 1 for sucking hot water by a pump 5, pressurizing it, sucking and mixing air in the venturi part and jetting it as the hot water containing air bubbles, the venturi part is constituted of the venturi pipe 13 whose inner cross section on a hot water sucking side 13a is bent to an L shape larger than the inner cross section on a hot water jetting side 13b with a bent part 13c as a boundary and is provided with an air introduction pipe 14. Then, the venturi case 12 mounted to the side wall of the bathtub 1 and the venturi pipe 13 are integrally resin-molded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathtub-mounted electric bubble generator for bathtubs.

[0002]

2. Description of the Related Art An electric bubble generator for a bath is usually constructed so that hot water is sucked and pressurized by a pump, air is sucked and mixed in a venturi portion and discharged as hot water containing bubbles. It is divided into a portable type and a bathtub mounting type.

A bathtub-mounted electric bubble generator for a bathtub is
Attached to the side wall of a bathtub, the side wall of the bathtub is generally provided with an opening for inhaling hot water and an opening for ejecting hot water containing bubbles, and an electric bubble generator for a bathtub is provided in these openings. Is configured to be installed. In this bathtub-attached electric bubble generator for bathtubs, most of the components are resin molded products.

FIG. 1 shows details of a hot water jetting portion including a venturi portion of a conventional bathtub-mounted electric bubble generator for a bathtub. The hot water jetting portion is fastened and fixed by screwing a fastening cylinder 34 from the inside of the bathtub 1 to the inner surface of the Venturi case 32 in which the connecting curved pipe 30 and the air introducing pipe 37 are integrally resin-molded. A cone-shaped Venturi pipe 36 whose inner diameter is gradually reduced from the inlet to the outlet is attached to the inner circumference of the base end portion of the connecting curved pipe 30 in the Venturi case 32.

[0005]

In the conventional electric bubble generator for bathtub, as shown in FIG. 1, it is necessary to make the outlet diameter of the venturi pipe 36 of the hot water jetting portion smaller than the inlet diameter, and Since the connection space between the side of the bathtub and the inner wall of the bathroom is limited, it is necessary to bend the connecting pipe on the inlet side of the venturi pipe 36 into an L-shape. Therefore, the venturi pipe 36 is integrated with the venturi case 32. Even if an attempt is made to perform resin molding, there is a problem that it is impossible to perform die-molding, and thus integral resin molding cannot be performed. In addition, since the integral resin molding cannot be performed, the number of parts is increased and it takes a long time to assemble.

An object of the present invention is to reduce the manufacturing cost and the assembling time by forming the venturi portion of the hot water jetting portion into a shape in which the venturi pipe 36 and the venturi case 32 can be integrally resin-molded.

[0007]

In order to achieve the above object, the present invention is installed in a bathtub, sucks hot water with a pump to pressurize it, and sucks and mixes air in a venturi section to eject hot water containing bubbles. In the electric bubble generator for a bathtub, the venturi portion is formed by a venturi pipe in which an inner cross section on the hot water intake side is bent into an L-shape larger than an inner cross section on the hot water jet side, and the air introduction pipe is provided. The venturi case, which is provided and is attached to the side wall of the bathtub, and the venturi tube are integrally resin-molded.

According to the electric bubble generator for a bath of the present invention, the venturi tube is formed in an L shape, and the inner cross section of the hot water suction side at the bent portion is larger than the inner cross section of the hot water jet side. When the pressurized hot water is introduced into the Venturi tube by making it into a tubular shape, the hot water having an increased flow velocity is jetted from the Venturi tube due to the cross-sectional change. As a result, the air introduced from the air introduction pipe is sucked and mixed with the hot water from which hot water is jetted and the hot water containing bubbles is jetted into the bath. By configuring the venturi portion in this way, the hot water suction side of the venturi tube also has the function of a connecting curved tube, and it enables die-cutting of resin integral molding, and the integral resin molding of the venturi tube and the venturi case is possible. It will be possible.

Therefore, the cost can be reduced and the number of parts can be reduced, so that the assembling time can be reduced.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of an electric bubble generator for bath according to the present invention will be described with reference to the drawings. 2 to 6, reference numeral 1 is a bathtub, and an electric bubble generator 2 is attached to the outer surface of one side wall of the bathtub. In this electric bubble generator 2,
A hot water suction part 3 for sucking hot water in the bathtub 1 and a pair of left and right hot water spouting parts 4 for jetting hot water containing bubbles into the bathtub 1 are provided, each penetrating an opening formed in a side wall of the bathtub 1. Have been installed.

The electric bubble generating apparatus 2 for a bath according to the present invention has a protruding portion 11a, a pair of discharge pipes 8a, and an elbow-shaped suction pipe 11.
A pump case 9 having a pump case 9, a driving motor 7, a motor case 7a, and a pump 5 including an impeller 10, and a venturi case 12 provided above the pump 5 and provided with an air introduction tube 14, and a venturi tube 13 A pair of left and right hot water jetting portions 4 and 4 formed by integrally resin molding, a pair of discharge pipes 8a of the pump 5 and the pair of hot water jetting portions 4 respectively.
Rubber hoses 15, 15 for connecting the Venturi tube 13 of
And air hoses 16, 16 connected to the air introduction pipes 14 of the pair of hot water jetting units 4, and the two air hoses 16
Is connected to one hose 17 by a joint 18.

The pump case 9 has a protrusion 11a having a fastening screw portion 11d, a side wall flange 11b, and a reinforcing rib 11.
f, a pump case base 8 in which a suction pipe 11 formed by integrally molding a pump support portion 11c, a pair of guide walls 8b formed so as to surround the impeller 10 and a pair of discharge pipes 8a is molded by resin And two members. A motor case 7a having a motor 7 is attached to the pump case base 8 with machine screws 7b, and the pump case base 8 is connected to and supported by a pump support 11c of a suction pipe 11 by a tapping screw 8d. Further, in the hot water suction part 3, the protrusion 11a is inserted into the side wall of the bathtub 1,
A fastening nut 19 that is fastened between the inner surface and the outer surface of the side wall via a packing 20 and a water passage cap 21 that is attached to the fastening nut 19 are attached.

As shown in FIGS. 2, 3 and 4, the hot water jetting portion 4 is connected to a venturi pipe 13 in which a venturi suction portion 13a and a venturi jetting portion 13b are bent at a bent portion 13c so as to be bent at a right angle. , Air introduction pipe 14, fastening nut portion 12c, side wall abutment portion 12a and reinforcing rib 12
Between the Venturi case 12 having b and the fastening nut portion 12c on the inner surface of the Venturi case 12, the side wall of the bathtub 1 penetrates from the inside of the bathtub 1 and the inner and outer surfaces of the side wall. And a spherical nozzle 24 attached to the inner surface of the fastening cylinder 22 by a cover 25 so that the angle can be changed.

The venturi portion is composed of a cylindrical venturi suction portion 13a and a venturi pipe 13 in which a venturi ejection portion 13b is bent and formed in an L shape at a right angle. The venturi ejection portion 13b has an inner diameter of the venturi suction portion 13a. Is smaller than the inner diameter of. Here, the venturi outlet 13d of the venturi jet 13b is located slightly on the jet side of the air inlet 14a of the air introduction pipe 14, and with this configuration, the venturi outlet 13d jets the air from the air inlet 14a. Air can be efficiently introduced into the warm water from the air introducing pipe 14 by utilizing the decrease in the static pressure of the warm water having an increased flow velocity.

As shown in FIG. 6, in the venturi portion constructed as described above, the upper half of the outer circumference of the main body of the venturi case 12 including the air introduction pipe 14 is in the P direction, and the venturi suction also has the function of a connecting pipe. Since the part 13a and the lower half of the outer circumference of the venturi case 12 can be die-cut in the Q direction, and the venturi ejection part 13b and the inner surface of the venturi case 12 can be die-cut in the R direction, the venturi tube 13 and the venturi case 12 can be integrally resin-molded. It is possible.

The connection between the pump 5 and the hot water jetting section 4 is shown in FIG.
As shown in FIG. 3 and FIG. 6, two rubber hoses 15, 15 are provided.
Thus, the pair of discharge pipes 8a, 8a of the pump 5 and the venturi suction part 13a of the two hot water jetting parts 4 are connected to each other, and the hot water pressurized by the hose fastening fitting 15a is prevented from leaking. It is done with consideration. As shown in FIG. 6, the rubber hose 15 has a uniform circular cross section and a curved portion with a smooth curve so that the pipe resistance to the hot water pressurized and discharged from the pump 5 is minimized. Is being considered. Further, since it has flexibility, it is possible to absorb the error in the mounting positions of the hot water suction part 3 and the pair of hot water jetting parts 4 on the side wall of the bathtub 1.

In the bathtub electric bubble generator 2 of the present invention, when the pump 5 is driven by the motor 7, the warm water in the bathtub 1 is sucked into the pump 5 from the warm water suction part 3 through the suction pipe 11, and the pump 5 is pumped. It is pressurized at 5 and guided from the two discharge pipes 8a to the hot water jetting part 4 through the rubber hose 15. In the Venturi ejection part 13b of the hot water ejection part 4, since the inner diameter of the venturi ejection part 13b is smaller than the inner diameter of the venturi suction part 13a, after passing through the venturi, the hot water is accelerated and the static pressure decreases at the same time. Therefore, the air is sucked and mixed from the air introduction port 14 and ejected from the nozzle 24 as hot water containing bubbles. Then, the jetted hot water jet exerts a massage effect on the human body in the bathtub 1 by water pressure, and when bubbles burst in the bathtub 1, ultrasonic waves are generated to exert an effect on health promotion.

[0018]

According to the electric bubble generator for a bathtub of the present invention, the hot water jetting portion can be formed by integrally molding the venturi case and the venturi pipe, so that the manufacturing cost and the assembly time can be shortened. Planned.

[Brief description of drawings]

FIG. 1 is a side view showing a cross-sectional view of a hot water projecting portion including a conventional venturi portion.

FIG. 2 is a side view showing a part of an embodiment of the present invention in a cutaway manner.

FIG. 3 is a vertical sectional front view thereof.

FIG. 4 is a perspective view showing a part of a venturi portion in a cutaway manner.

FIG. 5 is a bottom view showing the inside of the pump.

FIG. 6 is a perspective view showing a connection between a venturi portion and a pump.

[Explanation of symbols]

 1 Side Wall of Bathtub 2 Electric Bubble Generator for Bathtub 4 Hot Water Jet 5 Pump 12 Venturi Case 13 Venturi Tube 13a Venturi Suction 13b Venturi Jet 13c Bent 14 Air Inlet

Claims (1)

[Claims] 1. An electric bubble generator for a bathtub, which is attached to a bathtub and sucks hot water with a pump to pressurize it, and sucks and mixes air with a venturi portion to eject as hot water containing bubbles, wherein the venturi portion is bent. A venturi tube whose inner cross section on the hot water intake side is bent into an L-shape larger than the inner cross section on the hot water jet side, and which is equipped with an air introduction tube and is attached to the side wall of the bathtub. An electric bubble generator for a bath, wherein the venturi tube and the venturi tube are integrally resin-molded.