JP2017110509A - Soundproof structure for bathtub pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the soundproof structure for a bathtub pump, which has a soundproof performance superior to the conventional one.SOLUTION: A soundproof structure 1 for a bathtub pump for feeding hot water to the inside of a bathtub 100 is disposed to cover the lower face of a bathtub pump 20, comprises a sound absorptive material 10 disposed to cover a surrounding containing the lower face of the bathtub pump 20. The sound absorptive material 10 has an inner layer 13 and an outer layer 14 made of materials different from each other. The inner layer 13 is made of a porous material.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a soundproof structure for a bathtub pump.

  Conventionally, it is known that hot water is supplied to a bathtub by a pump. When the pump is operated, noise is generated due to the vibration. Therefore, a soundproof structure of the pump has been proposed as a countermeasure against such noise (see, for example, Patent Document 1).

  In the technique of Patent Document 1, the pump is installed and fixed on the base, and the side and upper side of the pump are covered with a sound insulation panel and a sound insulation case, thereby insulating the noise.

Registered Utility Model No. 2556977

  However, in the technique of Patent Document 1, even if the upper side of the pump is covered with a case, vibration and sound generated from the pump may not be sufficiently prevented, and installed in an apartment house such as an apartment where downstairs noise is a problem. It was difficult to do. Moreover, the usage method of a bathroom is also diversifying and it is desired to further enhance the soundproofing effect of the bathtub pump.

  An object of this invention is to provide the soundproof structure of the pump for bathtubs which has the soundproof performance superior to the past.

  In order to achieve the above object, the present invention provides a soundproof structure (for example, a bathtub described later) of a bathtub pump (for example, a bathtub pump 20 described later) for supplying hot water into a bathtub (for example, a bathtub 100 described later). Sound-absorbing structure 1), and a sound-absorbing material (for example, a sound-proof cover 10 to be described later) that is provided so as to cover the periphery including the lower surface of the bathtub pump and absorbs sound generated by vibration of the bathtub pump A soundproof structure for a bathtub pump is provided.

  It is preferable that the sound absorbing material has an inner layer (for example, an inner layer 13 described later) and an outer layer (for example, an outer layer 14 described later) which are different from each other.

  The inner layer is preferably made of a porous material.

  It is preferable that a gap (for example, a gap 15 described later) is formed between the inner layer and the outer layer.

  While supporting the pump for bathtubs covered with the sound-absorbing material from below, it further includes an anti-vibration material (for example, anti-vibration material 30 described later) for suppressing vibration of the bathtub pump, and the anti-vibration material is made of metal. A first vibration isolator made of a material (for example, a first vibration isolator 31 described later), a second vibration isolator made of a porous material (for example, a second vibration isolator 32 described later), It is preferable to have.

  ADVANTAGE OF THE INVENTION According to this invention, the soundproof structure of the pump for bathtubs which has the soundproof performance superior to the past can be provided.

It is a perspective view showing the state where the soundproof structure of the bathtub pump concerning this embodiment was attached to the bathtub. It is a disassembled perspective view of the soundproof structure of the bathtub pump which concerns on this embodiment. It is a front view of the cover main body in the soundproof structure of the bathtub pump of this embodiment. The result of having measured the vibration level of the soundproof structure of the pump for bathtubs of this embodiment and a conventional product is shown. The result of having measured the noise level of the soundproof structure of the bathtub pump of this embodiment and a conventional product is shown.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing a state in which a soundproof structure 1 for a bathtub pump according to the present embodiment is attached to a bathtub 100. The soundproof structure 1 of the bathtub pump is a circulation-type bathtub 100 that absorbs hot water from the bathtub 100 and circulates it. This prevents vibration and noise.

  The bathtub 100 is a substantially rectangular parallelepiped with an open top, and a pair of opposed long walls 101, a pair of opposed short walls 102, and a bottom surface portion 103 form a recess capable of storing hot water. The bathtub 100 has a water discharge port 104 and a jet nozzle 105 disposed on one side of the short wall 102.

  The pump 20 is connected to a pipe 201 extending from the water discharge port 104 and is disposed outside the short wall 102 of the bathtub 100. The pump 20 supplies hot water to the bathtub 100 through the water discharge port 104 and sucks hot water in the bathtub 100 from the side of the ejection nozzle 105. The pump 20 circulates the hot water in the bathtub 100 through the pipe 201 connected to the water discharge port 104. The pump 20 is mounted on, for example, a bathroom inspection port (not shown).

FIG. 2 is an exploded perspective view of the soundproof structure 1 of the bathtub pump.
The bathtub soundproof structure 1 includes a pump 20, a soundproof cover 10 as a sound absorbing material, and a vibration damping material 30.

The soundproof cover 10 is provided so as to cover the periphery including the lower surface of the pump 20. Specifically, the soundproof cover 10 is disposed so as to wrap around the lower surface of the pump 20 and surround the front and rear surfaces.
The soundproof cover 10 includes a cover body 110 and a lid portion 120, and each of the cover body 110 and the lid portion 120 includes an inner layer 13 and an outer layer 14. The soundproof cover 10 has both sound absorbing properties and sound insulating properties.

The cover body 110 is a casing that houses the pump 20 therein. As shown in FIG. 2, the cover main body 110 is formed in a shape substantially along the outer shape of the pump 20. The cover main body 110 surrounds the periphery of the pump 20, and one side is an opening 111 through which the pump 20 is taken in and out. A hole 112 through which the pipe 201 is inserted is formed on the surface facing the opening 111 (see FIG. 3). In addition, the opening 111 is arrange | positioned so that the operator who installs a pump may work in the direction (washing room side of a bathroom) which works from a viewpoint of workability | operativity improvement.
The lid 120 is formed of the same member as the cover main body 110 and is attached so as to close the opening 111 of the cover main body 110.

FIG. 3 is a front view of the cover main body 110 in the soundproof structure 1 of the bathtub pump.
The inner layer 13 is disposed inside the cover body 110 and is disposed on the side close to the pump 20. The inner layer 13 is not in direct contact with the pump 20 except for the lower surface of the pump 20, and an air layer is formed between the inner layer 13 and the pump 20. The inner layer 13 is made of a urethane / ether type porous material, for example, soft urethane. The inner layer 13 has a sound absorbing property that mainly absorbs sound. The thickness of the inner layer 13 is, for example, about 3 mm.

  As shown in FIG. 2, the inner layer 13 is formed to have an extending portion 130 that extends closer to the cover body 110 than the edge of the lid portion 120, as shown in FIG. 2.

  The outer layer 14 is made of a material different from the inner layer 13 and is more rigid than the inner layer 13, for example, olefin-based thermoplastic elastomer (TPO), for example, hard urethane. The outer layer 14 has a sound insulating property that mainly blocks sound. The outer layer 14 constitutes an outer shell of the cover main body 110 and the lid portion 120 and accommodates the inner layer 13 therein. The thickness of the outer layer 14 is, for example, about 3 mm.

  As shown in FIG. 3, a gap 15 is formed between the inner layer 13 and the outer layer 14, and the inner layer 13 and the outer layer 14 are not in close contact with each other.

The vibration isolator 30 is attached to the lower surface of the cover main body 110 and serves as a mount on which the pump 20 and the soundproof cover 10 are placed. The anti-vibration material 30 includes a first anti-vibration unit 31 and a second anti-vibration unit 32.
The first vibration isolation unit 31 is in direct contact with the lower surface of the cover main body 110. The first anti-vibration part 31 is a rectangular shape having a pair of facing surfaces opened, and is made of a metal material such as SUS having high rigidity.
The 2nd vibration isolator 32 is arrange | positioned under the 1st vibration isolator 31, and is provided in the installation surface of pumps 20, such as an inspection port. The second vibration isolator 32 is made of a urethane / ether porous material. The second vibration isolator 32 is a rectangular shape having a predetermined thickness.

  The effect | action of the soundproof structure 1 of the above pump for bathtubs is demonstrated. The pump 20 vibrates in small increments when operating. Here, since the second vibration isolator 32 is disposed on the inspection port serving as the installation surface of the pump 20, the vibration of the entire pump 20 is absorbed by a porous material that is soft and capable of damping vibrations. , Mainly vibrations in the low amplitude range are suppressed.

  In addition, since the first vibration isolation unit 31 has a rectangular shape, the pump 20 and the installation surface are separated from each other by the first vibration isolation unit 31, and vibration is not easily transmitted to the installation surface. In addition, since the first vibration isolator 31 has high rigidity, vibrations in a high amplitude region are mainly suppressed.

  Vibration that cannot be suppressed by the vibration isolator 30 is easily perceived as sound. Sound generated by the pump 20 is absorbed or shielded by the soundproof cover 10.

  An extension 130 is formed on the inner layer 13 of the lid 120 of the soundproof cover 10, and the extension 130 is inserted into the gap 15 between the inner layer 13 and the outer layer 14. The lid portion 120 is attached to the cover body 110 so that 14 overlaps the outer layer 14 of the cover body 110. For this reason, the layer surrounding the pump 20 partially becomes thick.

  The inner layer 13 of the soundproof cover 10 is made of a porous material that easily attenuates vibration of high-frequency sound. In addition, since a gap 15 is formed between the inner layer 13 and the outer layer 14 and is an air layer, even if the inner layer 13 vibrates due to the sound generated by the inner layer 13, Vibration is difficult to be transmitted to the outside. Since the outer layer 14 is formed to be harder than the inner layer 13, the sound generated from the pump 20 and not completely absorbed by the vibration isolating material 30 and the inner layer 13 is shielded.

According to this embodiment, the following effects are produced.
In this embodiment, the soundproof structure 1 of the bathtub pump for supplying hot water to the inside of the bathtub 100 is provided so as to cover the periphery including the lower surface of the bathtub pump 20, and the sound generated by the vibration of the bathtub pump 20 is generated. The soundproof cover 10 to be absorbed is included.

According to this embodiment, since the soundproof cover 10 as a sound absorbing material is provided so as to cover the periphery including the lower surface of the pump 20 and the sound absorbing material is disposed on the lower surface of the pump 20, vibration of the pump 20 can also be suppressed. At the same time, the sound generated by the pump 20 can be absorbed. Therefore, generation of noise can be suppressed. Therefore, the pump 20 for bathtubs which has the soundproof performance superior to the past can be installed.
Specifically, since the downstairs noise is reduced, it can be installed in an apartment house such as an apartment. Moreover, the flowing sound at the time of discharging hot water into the bathtub 100 becomes small, and the relaxation effect increases. You will also be able to enjoy TV and audio in the bathroom.
Furthermore, since the entire pump 20 is covered by the soundproof cover 10, the pump 20 and the soundproof cover 10 can be handled as one unit, and attachment is facilitated.

According to the present embodiment, the soundproof cover 10 includes the inner layer 13 and the outer layer 14 that are made of different materials. Thereby, since the materials of the inner layer 13 and the outer layer 14 are different, vibration and sound of a frequency that cannot be prevented by the material constituting one layer can be absorbed or shielded by the material constituting the other layer. . For this reason, it is possible to prevent sound in a wider frequency range.
Further, by configuring the soundproof cover 10 with the inner layer 13 and the outer layer 14 made of different materials, the soundproof performance can be improved while suppressing the thickness of the soundproof cover 10. The installation location of the pump 20 is often limited and is preferable because the soundproof cover 10 that covers the outside of the pump 20 can be downsized.

  According to the present embodiment, the gap 15 is formed between the inner layer 13 and the outer layer 14. Thereby, since the air layer of the gap 15 is interposed, the soundproofing effect can be enhanced.

  According to the present embodiment, the bathtub pump 20 covered with the soundproof cover 10 is supported from below, and the vibration isolator 30 that suppresses vibration of the bathtub pump 20 is further included. Moreover, the vibration isolator 30 was comprised including the 1st anti-vibration part 31 comprised with the metal material, and the 2nd anti-vibration part 32 comprised with the porous material. As a result, members of different materials are also arranged below the soundproof cover 10, so that in addition to the soundproofing effect of the soundproof cover 10, vibrations generated from the pump 20 can be further suppressed, and noise generation itself Therefore, the soundproofing effect is enhanced.

<Example>
The vibration level and the noise level were measured by the conventional soundproof structure and the soundproof structure 1 in the present embodiment.

[Vibration level test]
The vibration level test was performed in a 1600 mm × 1600 mm × 2200 mm bathroom using a high-back bathtub made by LIXIL. The bathtub material was acrylic artificial marble. The measurement was carried out using a vibration level meter manufactured by Ono Sokki Co., Ltd. for 10 seconds after the pump was operated. The numerical value shown in FIG. 4 shows the average value among the three measurements. The vibration level meter was attached to the leg portion of the bathtub. The temperature at the time of measurement was 25 degrees, and the amount of water stored in the bathtub was 200L. The operation mode of the pump was strong.

FIG. 4 is a diagram showing the result of measuring the vibration level. In FIG. 4, the line P shows the numerical value when the soundproof structure 1 for the bathtub pump in this embodiment is attached, and the line Q shows the entire surface of the pump. The numerical value at the time of attaching the soundproof structure of the pump for bathtubs which concerns on the comparative example which the sound absorption layer does not surround is shown. The vertical axis represents vibration acceleration (m / s ² ), and the horizontal axis represents frequency (Hz).

[Noise level test]
The noise level test was performed in a 1600 mm × 1600 mm × 2200 mm bathroom using a recliner bath made by LIXIL. The bathtub material was acrylic artificial marble. The measurement was performed using a noise level meter manufactured by Ono Sokki Co., Ltd. for 10 seconds after the pump was operated. The numerical value shown in FIG. 5 shows the average value among the three measurements. The noise level meter was attached near the upper edge of the short wall of the bathtub. The temperature at the time of measurement was 25 degrees, and the amount of water stored in the bathtub was 200L. The operation mode of the pump was weak.

  FIG. 5 is a diagram showing the result of measuring the noise level. In FIG. 5, the line R indicates the numerical value when the soundproof structure 1 for the bathtub pump in the present embodiment is attached, and the line S indicates the entire surface of the pump. The numerical value at the time of attaching the soundproof structure of the pump for bathtubs which concerns on the comparative example which the sound absorption layer does not surround is shown. The vertical axis represents the noise level (dBA), and the horizontal axis represents the frequency (Hz).

[Evaluation]
It was found that vibration and noise were remarkably reduced by the soundproof cover 10 in this embodiment at both the vibration level and the noise level. As for vibration, it is particularly effective in the frequency range of 150 to 300 HZ, and 75% of vibration can be reduced as compared with the comparative example. Regarding noise, the noise was reduced in the entire range of 0 Hz to 400 Hz.

It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, etc. within a scope that can achieve the object of the present invention are included in the present invention.
For example, in the above embodiment, the lid 120 is attached so as to be inserted into the cover main body 110, but is not limited thereto. A hook-and-loop fastener is attached to the edge of the cover body, the lid is a flat plate and light in weight, and a member that engages with the hook-and-loop fastener is attached at a position corresponding to the hook-and-loop fastener on the cover body. You may join a cover part and a cover main body by engagement.

DESCRIPTION OF SYMBOLS 1 Soundproof structure of bathtub pump 10 Sound absorbing material 13 Inner layer 14 Outer layer 15 Crevice 20 Bathtub pump 30 Vibration isolator 31 First vibration isolator 32 Second vibration isolator

Claims (5)

A soundproof structure for a bathtub pump for supplying hot water to the inside of the bathtub,
A soundproof structure for a bathtub pump provided with a sound-absorbing material that is provided so as to cover the periphery including the lower surface of the bathtub pump and absorbs sound generated by vibration of the bathtub pump.   The soundproof structure for a bathtub pump according to claim 1, wherein the sound absorbing material has an inner layer and an outer layer made of different materials.   The soundproof structure for a bathtub pump according to claim 2, wherein the inner layer is made of a porous material.   The soundproof structure for a bathtub pump according to claim 2 or 3, wherein a gap is formed between the inner layer and the outer layer. While supporting the bathtub pump covered with the sound absorbing material from below, further comprising a vibration isolating material for suppressing vibration of the bathtub pump,
The soundproofing of the pump for bathtubs in any one of Claim 1 to 4 which has the 1st vibration isolating part comprised by the metal material and the 2nd vibration isolating part comprised by the porous material. Construction.

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