JPH0576431U - Air intake structure in bubble generation bath - Google Patents

Abstract

(57) [Summary] [Purpose] It is possible to prevent abnormal noise from being generated from the air intake part when inhaling air and due to the bath water flowing backward in the pipe. [Structure] A bath hot water circulation channel (D) consisting of a bath hot water suction pipe (7) and a bath hot water forcible pipe (8) is provided between the bathtub body (1) and the circulation pump (P). At the same time, the end of the hot-water supply pipe (8) is opened in the bath body (1) to form the jet nozzles (2) (3), and the air intake (5) is added to the hot-water circulation channel (D). ) Are connected to each other, and the bath water containing air bubbles is mixed from the nozzles (2) and (3).
In the air bubble generation bath configured to be able to jet to (1), a plurality of independent intake chambers (16) and (17) are defined by the vertical partition wall (15) in the air intake section (5), and The bellmouth (19) (20), which has a small-diameter pipe shape with exhaust holes, is housed, and the bellmouth (19) (20) forms the main ventilation path (a). A sub-ventilation path (b) is formed in (17) to prevent abnormal noise.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an air intake structure capable of preventing abnormal noise from being generated when air is taken in at an air intake section in a bubble generation bath.

[0002]

[Prior 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 body and a circulation pump, and an air intake part is provided in the middle of the pipe. By driving the pump, the bath water is jetted into the bathtub body through the bathtub supply pipe, and at the same time, the negative pressure generated by the jetting of the bathwater is used to mix air into the jetting bathwater. By doing so, it is possible to spout it as a bath water containing bubbles in the bath body.

As shown in FIG. 7, such an air intake part has an intake case 50 having an intake port 51 attached to an edge of the bathtub body or the like, and the lower part of the case 50 has an intake air communicating with an ejection nozzle. The pipe 52 is connected. Further, the intake case 50 is divided into a plurality of upper and lower suction chambers 53, 53, and a small-diameter pipe-shaped bell mouth 54 having a sound deadening function is provided in each of the suction chambers 53, 53 to provide the suction chambers. When 53,53 were divided into upper and lower spaces, and when flowing into the intake chambers 53,53 from the bell mouth 54, they resonated with the sound waves and mutually interfered with each other, canceling each other out and preventing the generation of noise. ..

[0004]

[Problems to be solved by the device]

 However, the above-mentioned bubble generating bath still has the following drawbacks. That is, when the circulation pump was stopped, the bath water flowed backward from the jet nozzle through the intake pipe 52 and infiltrated into the air intake section, and the bath water was accumulated even in the upper portions of the intake chambers 53, 53. Due to the backflow of the bathwater, the bathwater flows back through the intake pipe 52, the water level rises to the lower end of the bell mouth 54 in the air intake, and an air pool 55 is formed on the outer periphery of the bell mouth 54. Was there.

Then, the air pool 55 draws in air from the lower end of the bell mouth 54, an abnormal sound is generated when the air is taken in, and a blow operation is performed in a state where the bath water flows backward. At this time, the negative pressure generated by the jet of the bath water is used to discharge the bath water in the air intake part to the jet nozzle, and when the bath water passes through the bell mouth 54, the air is sucked in and the metallic noise is generated. An abnormal sound similar to that was generated, and the above-mentioned abnormal sound made the bather feel uncomfortable.

Further, when the hot water flows backward, the hot water is sucked up above the hot water by the siphon principle of the bell mouth 54 having a small diameter inside the air intake chamber, and the hot water is discharged from the air intake port 51 provided in the air intake section. There was also a risk of spouting.

An object of the present invention is to provide an air intake structure in a bubble generating bath that can solve the above problems.

[0008]

[Means for Solving the Problems]

 In the present invention, a bath hot water circulation flow path consisting of a bath hot water suction pipe and a bath hot water supply pipe is provided between the bath body and the circulation pump, and the end of the bath hot water supply pipe is placed inside the bath body. In addition to forming an ejection nozzle by opening it at the same time, an air intake section is connected in communication with the bath hot water circulation flow path, and the bath hot water containing air bubbles can be jetted from the nozzle to the bath water main body. , A plurality of independent intake chambers are defined by vertical partitions in the air intake part, and a small diameter pipe-shaped bell mouth with an exhaust hole is housed in each intake chamber. It is intended to provide an intake structure.

[0009]

[Effect of the device]

 In the present invention, the circulating hot water is forcibly circulated by driving the circulation pump, and the hot water is ejected from each of the ejection nozzles provided in the bath body. The blow operation is performed by mixing the air taken in from the bath into the bath water through the intake pipe. Further, in the air intake section, the air from the suction section smoothly flows into each intake chamber by the bell mouth, and the noise emitted from the bell mouth resonates with the sound wave in each of the large-capacity intake chambers and mutually reciprocates. Muting is performed by canceling out interference.

Moreover, when the blow operation is stopped, the bath water flows back into the air intake portion through the intake pipe, and even if the bath water rises in each intake chamber, the exhaust holes provided in the bell mouth allow the intake air to flow. By exhausting the air in the room to eliminate air traps, it is possible to prevent abnormal noise from being generated due to the air traps, and also to prevent spouting of the bath water from the bell mouth by the communication hole.

Further, in the blow operation, when the hot water accumulated in the air intake portion is discharged by the negative pressure effect of the hot water jet, the air is exhausted through the exhaust hole provided above the bell mouth in each intake chamber. By taking out the hot water from the bath and preventing the generation of abnormal noise due to the intake of air, it is possible to take a comfortable bath.

[0012]

【Example】

 The embodiments of the present invention will be described in detail with reference to the drawings. First, the overall structure of the bubble-generating bath according to the present invention will be described in detail. A shown in FIG. 1 is a bubble-generating bath according to the present invention. The bubble-generating bath A is formed on the front and rear walls of a bath body 1 having a box-like shape with an opening on the upper and lower sides. Four ejection nozzles 2 and 3 are provided. Then, the bathtub body 1 has a flange-shaped edge portion 1a having a constant width formed on the peripheral edge thereof, and the air intake portion 5 is provided at the edge portion 1a.

A pump protection case 6 is provided outside the bubble generating bath A, and a circulation pump P for circulating the bath water, a filter F for filtering the bath water, and a pump are provided in the case 6. A drive motor M and a control unit C that controls the drive of the electric three-way valve are provided.

A bath hot water circulation passage D is provided between the circulation pump P and the bubble generation bath A, and the bath hot water circulation passage D extends from the bubble generation bath A to the circulation pump P. It is composed of a bath hot water suction pipe 7 for sending the hot bath to the bath and a strong bath hot pipe 8 for sending the bath from the circulation pump P to the bath body 1. The bath hot water suction pipe 7 is connected at one end thereof to the suction port 9 opened at the lower portion of the bath body 1, and at the other end thereof is communicated with the suction port of the circulation pump P 1 so that the bath I try to inhale hot water. On the other hand, the bath hot water supply pipe 8 is connected to the water discharge port of the circulation pump P at one end thereof and is connected to the jet nozzles 2 and 3 described above by branching the other ends thereof.

Further, as shown in FIG. 1, a plurality of intake pipes 10 are provided between the air intake section 5 and the ejection nozzles 2 and 3, and each intake pipe 10 is The air intake portion 5 is connected to the upper portions of the ejection nozzles 2 and 3 so as to communicate with each other. Then, by utilizing the negative pressure generated at the time of jetting of the hot water of the jet nozzles 2 and 3, the air taken in from the air intake portion 5 is made to be sucked into the jet nozzles 2 and 3 through the respective intake pipes 10, It is configured so that the bath water containing bubbles is ejected into the bath body 1 by a few.

Next, the configuration of the air intake portion 5 provided at the edge portion 1a of the bath body 1 will be described in detail. That is, as shown in FIG. 2, the air intake part 5 is provided with an intake part 12 for taking air into the case 11 above the rectangular silencer 11, and an intake part 12 below the case 11. A plurality of air communication holes 13 for connecting the pipes 10 are provided, and the air intake pipes 10 are connected to the communication holes 13 to communicate with the ejection nozzles 2 and 3 and the suction portion 12 of the case 11. The air from the inside passes through the case 11 and is supplied to the ejection nozzles 2 and 3 through the air communication hole 13. The air communication hole 13 is provided with a connection portion for the intake pipe 10, and the communication pipe 13 is connected to the intake pipe 10 via a connector 10a.

As shown in FIG. 2, a vertical partition wall 15 is provided 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 which communicates with the intake pipe 10 from the intake section 12 through the intake chambers 16 and 17.

In the present invention, as shown in FIG. 2, as the silencer 11, the upper and lower bell mouths 19 and 20 are installed in the suction part 12 and the intake chambers 16 and 17, respectively, and the configuration thereof will be described in detail below. To explain. That is, the upper bell mouth 19 is a silencer 11 in which a small-diameter pipe-shaped silencer pipe 21 is vertically attached to the suction portion 12, and a pipe partition wall 22 is arranged at the center of the pipe 19. The inside is divided into two parts, and a fitting groove portion 22a into which the upper portion of the vertical partition wall 15 is fitted is provided in the pipe partition wall 22. The upper portion of the vertical partition wall 15 is fitted into the groove portion 22a, and the bell mouth 19 of the bell mouth 19 is inserted. The spaces 19a and 19b are in communication with the intake chambers 16 and 17, respectively.

Moreover, a taper portion 23 is provided at the upper end opening of the bell mouth 19 and the upper end portion of the pipe partition wall 22, so that the taper portion 23 allows air to smoothly flow in and reduces noise. There is.

On the other hand, as shown in FIG. 2, the lower bell mouth 20 is a mounting step formed on the inner side surface 11 a of the silencer 11 and the side surface of the vertical partition wall 15 in the middle of each intake chamber 16, 17. It is composed of a rectangular mounting plate 25 that engages with the portion 24, and a muffling pipe 26 extending downward from the central portion of the mounting plate 25. Furthermore, a taper portion 27 is provided at the upper end opening of the muffling pipe 26, and the taper portion 27 smoothly inflows air to reduce noise.

Further, by the mounting plate 25 of the lower bell mouth 20, the intake chambers 16 and 17 are divided into upper and lower intake spaces 16a, 16b, 17a and 17b, and the upper and lower intake spaces 16a and 16b are separated by the muffling pipes 26. , 17a, 17b are connected to each other.

Therefore, with such a configuration, the noise emitted from the silencer 11 flows into each of the large-capacity intake chambers 16 and 17, resonates with the sound waves, and cancels out interference with each other to fulfill a silencing function. It is a thing.

As described above, the silencer 11 is configured to have a sound deadening function. Therefore, the air flowing into the upper and lower bell mouths 19 and 20 smoothly flows in by the taper portions 23 and 27 of the upper end opening, The noise is reduced by that amount, and the noise at the time of sucking air from the suction part 12 of the air intake part 5 is canceled by the bell mouths 19 and 20 having a muffling function.

Next, the mounting 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, an attachment hole 1b is provided in the edge portion 1a of the bathtub body 1, and an upper end portion of the silencer 11 is arranged in the hole 1b, and an outer peripheral surface of the silencer 11 is provided. The silencer 11 is attached by screwing an annular engagement collar body 28. Further, a lid cap 29 is screwed onto the outer peripheral surface of the engaging collar body 28 so that air is taken into the silencer 11 from an intake hole 29a provided on the side surface of the cap 29. Reference numeral 29b indicates a U packing provided on the outer periphery of the engaging collar body 28.

The present invention has a feature in the structure of the silencer 11 provided in the air intake part 5, and its configuration 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 an air reservoir in its mounting plate 25, and the auxiliary ventilation passages are provided in the respective intake chambers 16, 17. b is formed, and the sub-ventilation flow path b exhausts air from the lower intake spaces 16b, 17b of the intake chambers 16, 17 to the upper intake spaces 16a, 17a, thereby preventing the occurrence of air traps.

Further, as described above, the air is exhausted through the plurality of exhaust holes 30 to prevent the generation of the abnormal sound due to the concentration of one point. In addition, the exhaust hole 30 provided in the mounting plate 25 discharges the bath water that has accumulated in the intake chamber, so that it is possible to prevent abnormal noise due to air intake when the silence pipe 26 is discharged. It

Further, as shown in FIG. 2, the lower ends of the muffler pipes 21 and 26 of the silencer 11 are obliquely cut out to form inclined surfaces 31 and 32 to prevent generation of abnormal noise due to air entrainment. ing.

In the present embodiment, as shown in FIG. 2, the lower end portion of the upper bell mouth 19 is disposed in each of the intake chambers 16 and 17, and the left and right side portions of the muffler pipe 21 are respectively separated by vertical partition walls. The inclined surface 32 facing 15 is formed. With such a structure, when the bath water flows back into the air intake part 5 due to the back flow of the bath water, the lower ends of the muffling pipes 21 and 26 are inclined surfaces 31 and 32. With, it is possible to prevent the abnormal noise due to the entrainment of air from being generated by keeping the lower end openings of the sound deadening pipes 21 and 26 open without being closed.

In addition, the lower bell mouth 20 has a plurality of ribs 33 having a substantially triangular shape protruding from the lower surface 25a of the mounting plate 25 and the outer peripheral surface 26a of the sound deadening pipe 26, and the ribs 33 are used for bathing. The water level is gradually raised.

Further, in this embodiment, as shown in FIG. 5, exhaust holes 34 for venting air located above the silencer 11 are provided around the sound deadening pipe 21 of the upper bell mouth 19, respectively. When the hot water flows back into the air intake section 5 through the holes 34, the air above the intake chambers 16 and 17 is extracted from the muffling pipes 21 through the exhaust holes 34, so that the intake chambers 16 and 17 are exhausted. By eliminating the air pool in the upper part of the room, it is possible to avoid the abnormal noise caused by the air pool and the suction pipe 21 sucking up the bath water as much as possible.

3 and 4 show another embodiment of the air intake portion 5, in which the air intake portion 5 is arranged at the corner portion of the bath body 1, and the air communication portion is connected to the silencer 11. The holes 13 are attached in a state of being orthogonal to each other, and are connected to the ejection holes 2 and 3 through the intake pipe 10 in the same communication hole 13.

In another embodiment, as shown in FIG. 4, an exhaust hole 34 for venting air is provided around the silencer pipe 21 of the upper bell mouth 19 from the lower end opening of the silencer pipe 21 to the upper part of the silencer 11. A slit 35 may be provided in the vicinity so that the air in each of the intake chambers 16 and 17 can be removed by the slit 35.

Next, the operation of the air intake section 5 will be described in detail. That is, the circulating hot water is forcedly circulated by driving the circulation pump P, and the hot water is jetted from the jet nozzles 2 and 3 provided in the bath body 1, and at this time, the negative pressure of the hot water jet causes air to flow. Blow operation is performed by mixing the air taken in from the intake section 5 into the bath water through the intake pipe 10. Further, in the air intake part 5, the air from the intake part 12 smoothly flows into the intake spaces 16a, 16b, 17a, 17b of the intake chambers 16, 17 by the tapered parts 23, 27 of the bell mouths 19, 20. Then, the noises emitted from the upper and lower bellmouths 19 and 20 resonate with the sound waves in the large-capacity suction chambers 16 and 17, and cancel each other to cancel the noise.

When the bath water flows backward to the air intake portion 5 and the water level of the bath water rises further in the air intake portion 5, as shown in FIG. By the auxiliary ventilation path b by the exhaust hole 30 provided in the upper intake space 16a, 17a, the air accumulated in the upper part of the lower intake space 16b, 17b is exhausted to the upper intake space 16a, 17a, and the upper intake space 16a, In 17a, air is vented to the outside from the muffling pipe 21 through the exhaust hole 34 provided in the upper bell mouth 19, and the air pools in the intake chambers 16 and 17 are eliminated to prevent abnormal noise from being generated. Further, the exhaust hole 34 also prevents the spouting of the bath water from the muffling pipe 21.

Further, when the blow operation is performed, when the bath hot water accumulated in the air intake portion 5 is discharged by the negative pressure effect of the jet of the bath hot water, the taper of the lower bell mouth 20 in each of the intake chambers 16 and 17 is performed. The bath 27 smoothly flows into the muffling pipe 26 by the part 27, and the bath hot water flows out through the exhaust hole 30 of the mounting plate 25 to avoid the intake of air and prevent the generation of abnormal noise. It is a thing.

[Brief description of drawings]

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

FIG. 2 is a cross-sectional side view of an air intake section.

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

4 is a cross-sectional view taken along the line I-I of FIG.

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

FIG. 6 is an explanatory diagram of an air intake section when the blow operation is stopped.

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

[Explanation of sign]

 1 Bathtub 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 Vent Path b Sub Vent Path

(72) Creator Mitsuaki Hashida 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu, Fukuoka Prefecture Totoki Equipment Co., Ltd. (72) Hiroshi Kanamaru 2-1-1 Nakajima, Kitakyushu, Kitakyushu, Fukuoka No. 1 Totoki Equipment Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A bath hot water circulation passage (D) comprising a bath hot water suction pipe (7) and a bath hot water forcible pipe (8) is provided between the bath body (1) and the circulation pump (P). The spraying hot water supply pipe (8) is opened to the inside of the bath body (1) to form jet nozzles (2) and (3), and an air intake part is provided in the hot water circulation passage (D). In the bubble-generating bath configured to connect (5) with each other and to eject the bubble-containing bath water from the nozzles (2) and (3) into the bath body (1), the air intake part (5) has a vertical partition wall. A plurality of independent intake chambers (16) and (17) are defined by (15), and in each intake chamber,
Small diameter pipe-shaped bell mouth (19) with exhaust holes (30) (34)
An air intake structure in a bubble-generating bath characterized by containing (20).