JP2569120Y2 - Air intake structure in bubble generating bathtub - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air intake structure capable of preventing generation of abnormal noise when air is sucked into an air intake section of a bubble generating bath.

[0002]

2. Description of the Related Art Conventionally, as a basic form of a bubble generating bath, a bath hot water suction pipe and a bath hot water supply pipe are connected between a bath tub main body and a circulation pump, and an air intake section is provided in the middle of the pipe. The bath water is blown out to the bathtub body through the bath water supply pipe by the driving of the pump, and at that time, the bath water is blown out by utilizing the negative pressure generated by the bath water blowing out. The air is mixed into the bathtub so that it becomes a bathwater containing air bubbles in the bathtub body and is spouted out.

[0003] As shown in FIG.
An intake case 50 having an intake port 51 is attached to an edge or the like of the bathtub body, and an intake pipe 52 communicating with a jet nozzle is connected to a lower portion of the case 50. Further, a plurality of intake chambers 53, 53 are vertically divided in the intake case 50, and a small-diameter pipe-shaped bell mouth 54 having a sound deadening function is provided in each intake chamber 53, 53, and each intake chamber 53 is provided. , 53 are formed in the upper and lower spaces, and the bell mouth 54 is used to form the respective suction chambers 53, 53.
When it flows into the device, it resonates with the sound wave and cancels each other, thereby preventing the generation of noise.

[0004]

However, the above-mentioned bubble-generating bath still has the following drawbacks. That is, when the circulating pump is stopped, the bath water flows backward from the ejection nozzle through the intake pipe 52 and enters the air intake section, and the bath water accumulates in the upper portions of the suction chambers 53 and 53. Due to the backflow of the bathwater, the bathwater flows backward in the intake pipe 52, the water level rises to the lower end of the bell mouth 54 in the air intake section, and an air pool 55 is formed on the outer periphery of the bellmouth 54. I was

Then, air is trapped by the air reservoir 55 from the lower end of the bell mouth 54, and when the air is trapped,
Generates an abnormal sound, and when performing the blow operation in a state where the bath water flows backward, utilizes the negative pressure generated by the discharge of the bath water to discharge the bath water in the air intake unit to the discharge nozzle, When the bath water is passed through the bell mouth 54, the air is sucked in and an abnormal sound similar to a metal sound is generated, and the abnormal sound gives the bather discomfort.

Further, when the bath water flows backward, the siphon principle by the small-diameter bell mouth 54 in the intake chamber is used.
There is also a risk that the bath water will be sucked upward, and the bath water will blow out from the air inlet 51 provided in the air intake section.

[0007] It is an object of the present invention to provide an air intake structure in a bubble generating bath which can solve the above problems.

[0008]

According to the present invention, a bath circulating flow path comprising a bath hot water suction pipe and a bath hot water feed pipe is provided between a bath tub body and a circulation pump, and a bath hot water is provided. The end of the feed pipe is opened in the bathtub body to form a jet nozzle, and an air intake section is connected to the bathwater circulation channel so that the bubbled bathwater can be jetted from the nozzle to the bathtub body. In the bubble generating bath tub, a plurality of independent intake chambers are defined by a vertical partition in the air intake section, and a small-diameter pipe-shaped bell mouth having an exhaust hole is housed in each intake chamber. It is intended to provide an air intake structure in a generating bathtub.

[0009]

[Effect of the Invention] In the present invention, the bath water is forcibly circulated by driving the circulating pump, and the bath water is jetted from each of the jet nozzles provided in the bathtub body. In addition, the air sucked from the air intake section is mixed into the bath water through an intake pipe to perform a blow operation. Further, in the air intake section, the air from the suction section smoothly flows into each intake chamber by a bell mouth,
The noise emitted from the bell mouth resonates with the sound wave in each of the large-capacity intake chambers, and cancels each other to cancel the noise.

In addition, when the blow operation is stopped, the bath water flows back into the air intake section through the intake pipe, and even if the bath water rises in each intake chamber, the exhaust hole provided in the bell mouth causes the intake air to flow. By exhausting the indoor air and eliminating the air pockets, the generation of abnormal noise due to the air pools is prevented,
Further, it is possible to prevent the spout of bath water from the bell mouth by the communication hole.

[0011] Further, when performing the blow operation, when the bath water accumulated in the air intake portion is discharged by the negative pressure effect of the bath water ejection, the air is discharged through the exhaust hole provided at the upper part of the bell mouth in each intake chamber. It is possible to perform comfortable bathing by performing outflow of bath water to prevent occurrence of abnormal noise due to air suction.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described in detail with reference to the drawings. First, the overall structure of a bubble generating bath according to the present invention will be described in detail. A shown in FIG. 1 is an air bubble generation bathtub according to the present invention. The air bubble generation bathtub A is provided on the front and rear walls of a bathtub body 1 formed in a box shape with an upper surface opening, and the foot side and the back side of which the ejection amount is automatically variable. Four ejection nozzles 2 and 3 are provided. The bathtub body 1 has a flange-shaped edge portion 1a having a fixed width around its periphery.
Is formed, and the air intake portion 5 is provided at the same edge portion 1a.

Further, outside the bubble generating bath A,
A pump protection case 6 is provided. In the case 6, a circulating pump P for circulating bath water, a filter F for filtering bath water, a motor M for driving a pump, and a control unit for controlling the driving of an electric three-way valve. C.

A bath water circulation channel D is provided between the circulation pump P and the bubble generation bath A, and the bath water circulation channel D is connected between the bubble generation bath A and the circulation pump P. A hot-water bath suction pipe 7 for sending hot water to the bathtub main body 1 for sending hot water from the circulation pump P to the bathtub body 1. The bath water suction pipe 7 is connected to the bathtub body 1.
One end is connected to the suction port 9 opened at the lower part of the circulating pump P, and the other end is connected to the suction port of the circulating pump P so as to suck the bath water into the pump P. On the other hand, the bath hot water supply pipe 8 has one end connected to the water discharge port of the circulation pump P, and the other end branched to and connected to the jet nozzles 2 and 3, respectively.

As shown in FIG. 1, a plurality of intake pipes 10 are provided between the air intake section 5 and each of the jet nozzles 2 and 3. The air intake section 5 is connected to the upper part of each of the jet nozzles 2 and 3 for communication. Then, utilizing the negative pressure generated at the time of bath water jetting of each of the jet nozzles 2 and 3, the air taken in from the air intake unit 5 is
The air is sucked into the jet nozzles 2 and 3 through the respective intake pipes 10, and the bath water containing air bubbles is jetted from the nozzles 2 and 3 into the bathtub body 1.

Next, the configuration of the air intake section 5 provided at the edge 1a of the bathtub body 1 will be described in detail. That is, as shown in FIG. 2, the air intake section 5 is provided with an intake section 12 for taking air into the case 11 above the rectangular silencer 11 and an intake pipe below the case 11. A plurality of air communication holes 13 are provided to connect the air inlet pipes 10 to the communication holes 13 and connected to the respective ejection nozzles 2 and 3. The air passes through the case 11 and is supplied to the jet nozzles 2 and 3 from the air communication holes 13. The air communication hole 13 has an intake pipe
Ten connection parts are provided, and the intake pipe 10 is connected to the communication hole 13 via a connection tool 10a.

As shown in FIG. 2, a vertical partition 15 is disposed in the center of the silencer 11 to form two independent intake chambers 16 and 17 on the left and right sides. In addition, a main ventilation path a is formed from the suction section 12 to pass through the respective suction chambers 16 and 17 and communicate with the suction pipe 10.

In the present invention, as shown in FIG. 2, upper and lower bell mouths 19, 20 are mounted in the suction section 12 and the suction chambers 16, 17 as the silencer 11, and the structure thereof will be described in detail below. I do. That is, the upper bell mouth 19 is
A small-diameter pipe-shaped silencing pipe 21 is attached to the suction section 12 in the up-down direction. Further, a pipe partition 22 is arranged at the center of the pipe 19, and the inside thereof is divided into two parts, In the pipe partition 22, a fitting groove 22a into which the upper part of the vertical partition 15 is fitted is provided, and the upper part of the vertical partition 15 is fitted into the groove 22a, and each space 19a, 19b of the bell mouth 19 and each intake chamber 16, 1
7 and communicate with each other.

Moreover, a tapered portion 23 is provided at the upper end opening of the bell mouth 19 and the upper end of the pipe partition wall 22 so that air can be smoothly introduced by the tapered portion 23 to reduce noise. I have.

On the other hand, as shown in FIG. 2, the lower bell mouth 20 is provided on the inner surface of the silencer 11 in the middle of each of the intake chambers 16 and 17.
11a, a rectangular mounting plate 25 that engages with a mounting step 24 formed on the side surface of the vertical partition wall 15, and a sound deadening pipe 26 that extends downward from the center of the mounting plate 25. . Further, a tapered portion 27 is provided at an upper end opening of the sound deadening pipe 26, and the tapered portion 27 allows air to flow in smoothly to reduce noise.

Further, the suction chambers 16 and 17 are divided into upper and lower suction spaces 16a, 16b, 17a and 17b by the mounting plate 25 of the lower bell mouth 20.
And the upper and lower intake spaces 16a, 16b, 17
a and 17b are connected to each other.

Therefore, with this configuration, the silencer
The noise emitted from 11 flows into each of the large-capacity intake chambers 16 and 17 and resonates with the sound waves, thereby mutually canceling each other to perform a noise reduction function.

As described above, the silencer 11 is configured to perform a silencing function.
The air that flows into 9,20 smoothly flows through the tapered portions 23,27 at the upper end opening, reducing the noise accordingly, and
The noise generated when the air is sucked in from the suction section 12 of the air intake section 5 is eliminated by bell mouths 19 and 20 having a silencing function.

Next, the attachment of the silencer 11 configured as described above to the bathtub body 1 will be described in detail. That is, as shown in FIG. 2, a mounting hole 1b is provided in the edge 1a of the bathtub body 1, and the upper end of the silencer 11 is provided in the hole 1b. Engagement collar body 28
And the silencer 11 is attached.
A lid cap 29 is screwed onto the outer peripheral surface of the engagement collar body 28 so that air can be taken into the silencer 11 from a suction hole 29a provided on a side surface of the cap 29. Note that 29b
Denotes a U-packing provided on the outer periphery of the engagement collar body 28.

The present invention has a feature in the structure of the silencer 11 provided in the air intake section 5, and its structure will be described in detail with reference to the drawings. That is, as shown in FIG. 2, the lower bell mouth 20 is provided with a plurality of exhaust holes 30 for exhausting the air pool on its mounting plate 25, and each of the intake chambers 16, 1.
7, a sub-ventilation passage b is formed, and the sub-ventilation passage b exhausts air from the lower intake spaces 16b, 17b of the intake chambers 16, 17 to the upper intake spaces 16a, 17a to form an air reservoir. The occurrence is prevented.

Further, as described above, by exhausting the air through the plurality of exhaust holes 30, the occurrence of abnormal noise due to the concentration of one point is prevented. Further, by discharging the bath water accumulated in the intake chamber by the exhaust hole 30 provided in the mounting plate 25, it is possible to prevent occurrence of an abnormal sound due to air suction when the bath water is discharged from the sound deadening pipe 26.

As shown in FIG. 2, the lower ends of the silencer pipes 21 and 26 of the silencer 11 are notched diagonally to form inclined surfaces 31 and 3.
As a second measure, abnormal noise caused by air entrapment is prevented.

In this embodiment, as shown in FIG. 2, the lower end of the upper bell mouth 19 is disposed in each of the intake chambers 16 and 17, and the left and right sides of the sound deadening pipe 21 are separated from each other by vertical partition walls. An inclined surface 32 facing 15 is formed. With such a configuration, when the bath water flows backward and the bath water enters the air intake section 5, the lower ends of the sound deadening pipes 21 and 26 are inclined surfaces 31 and 32. Sound deadening pipes 21, 26
The lower end opening is always opened without closing, so that the occurrence of abnormal noise due to air entrapment can be prevented.

The lower bell mouth 20 has a plurality of substantially triangular ribs 33 projecting from the lower surface 25a of the mounting plate 25 and the outer peripheral surface 26a of the sound deadening pipe 26. The water level is rising slowly.

Further, in this embodiment, as shown in FIG. 5, around the sound deadening pipe 21 of the upper bell mouth 19, exhaust holes 34 for venting air located above the silencer 11 are provided, respectively. When the bath water flows back to the air intake section 5 by the holes 34, the air above the intake chambers 16 and 17 is removed from the sound deadening pipe 21 through the exhaust holes 34, so that the air in the intake chambers 16 and 17 is removed. By eliminating the air pool in the upper part, the generation of abnormal sound due to the air pool and the suction of bath water by the sound deadening pipe 21 are avoided as much as possible.

FIGS. 3 and 4 show another embodiment of the air intake unit 5, wherein the air intake unit 5 is provided at the corner of the bathtub body 1.
The air communication hole 13 is attached to the silencer 11 so as to be orthogonal to the silencer 11, and the air communication hole 13 is connected to each of the ejection nozzles 2 and 3 via the intake pipe 10.

In another embodiment, as shown in FIG. 4, an exhaust hole 34 for venting air around the sound deadening pipe 21 of the upper bell mouth 19 is provided from the lower end opening of the sound deadening pipe 21 to the vicinity of the upper part of the silencer 11. It is also possible to provide a slit 35 so that air can be vented from each of the intake chambers 16 and 17 through the slit 35.

Next, the operation of the air intake section 5 will be described in detail. That is, the bath water is forcibly circulated by the drive of the circulation pump P, and the bath water is jetted from each of the jet nozzles 2, 3 provided in the bathtub main body 1. At this time, the air is blown by the negative pressure action by the jet of the bath water. The blow operation is performed by mixing the air sucked from the intake section 5 into the bath water through the suction pipe 10. Further, in the air intake section 5, the suction section
The air from 12 smoothly flows into the intake spaces 16a, 16b, 17a, 17b of the intake chambers 16, 17 by the tapered portions 23, 27 of the bell mouths 19, 20, and from the upper and lower bell mouths 19, 20. The generated noise resonates with the sound wave in each of the large-capacity intake chambers 16 and 17, and cancels out the interference by mutual interference.

When the bath water flows back to the air intake section 5 and the water level of the bath water rises further in the air intake section 5, as shown in FIG. The air that accumulates in the upper part of the lower intake spaces 16b and 17b is removed by the auxiliary ventilation path b formed by the exhaust holes 30 provided in the upper intake spaces 16a and 17a.
Exhaust air to eliminate air pockets, and in addition to the upper intake space
In 16a and 17a, air is evacuated outward from the sound deadening pipe 21 through an exhaust hole 34 provided in the upper bell mouth 19, and each of the intake chambers 16, 1
7 to prevent the generation of abnormal noise caused by the air pool.
It also prevents the spouting of hot spring water.

When the blow operation is performed, the tap water of the lower bell mouth 20 in each of the intake chambers 16 and 17 is discharged when the bath water accumulated in the air intake section 5 is discharged by the negative pressure effect of the bath water jet. The part 27 allows the hot water to flow smoothly into the sound deadening pipe 26, and also allows the hot water to flow out through the exhaust holes 30 of the mounting plate 25, thereby avoiding the intake of air and preventing the occurrence of abnormal noise. It is.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a bubble generating bathtub structure according to the present invention.

FIG. 2 is a sectional side view of an air intake unit.

FIG. 3 is a plan view of an air intake section of another embodiment.

FIG. 4 is a sectional view taken along line II of FIG. 3;

FIG. 5 is an explanatory diagram of an air intake unit during a blow operation.

FIG. 6 is an explanatory diagram of an air intake unit when a blow operation is stopped.

FIG. 7 is an explanatory diagram of a conventional air intake unit.

[Description of sign]

 DESCRIPTION OF SYMBOLS 1 Bathtub main body 2 Jet nozzle 3 Jet nozzle 5 Air intake part 11 Silencer 15 Vertical partition 16 Intake chamber 17 Intake chamber 30 Exhaust hole a Main ventilation path b Secondary ventilation path

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Kanamaru 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Prefecture Toko Kiki Co., Ltd. (56) References JP-A-3-221049 (JP, A) JP-A-3-9751 (JP, A) JP-A-2-309954 (JP, A) JP-A-5-62235 (JP, U) JP-A-4-241865 (JP, U) JP-A-2-82335 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] A bath water circulation flow path (D) comprising a bath water suction pipe (7) and a bath water strong feed pipe (8) is provided between a bathtub body (1) and a circulation pump (P). The end of the hot water bath pipe (8) is opened into the bathtub body (1) to form the jet nozzles (2) and (3), and the air intake section into the hot water circulation channel (D). (5) is connected and connected, and in the bubble-generating bath tub configured so that the bubble-containing bath water can be ejected from the nozzles (2) and (3) to the bath-water main body (1), the inside of the air intake section (5) is a vertical partition. (15) defines a plurality of independent intake chambers (16) and (17), and in each intake chamber,
Small diameter pipe-shaped bell mouth (19) having exhaust holes (30) (34)
An air intake structure in a bubble generating bathtub, wherein (20) is stored.