JPH10252979A - Sound reducing fluid pipe, and sound reducing interposed material in double piping of the fluid pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly perform the inserting and drawing work of a fluid pipe by inserting in a flexible sleeve pipe a flexible fluid pipe in which a cushioning layer on the outer surface of the fluid pipe and a film layer to which the resin to improve the slip to the inner surface of the sleeve pipe is applied in a spotted manner are laminated. SOLUTION: A fluid pipe 1 around which a sound reducing interposing material 3 in which a cushioning layer 4 on the side in contact with the outer surface of the flexible fluid pipe to pass the fluid such as hot water and cold water therein, and a film layer (braided fabric, woven fabric, non-woven fabric, etc.) 5 to which the polymer blend type resin such as the silicone resin, fluoro resin, or the copolymer type thereof to improve the slip on the side in contact with the inner surface of a sleeve pipe 2 is applied to the surface on the spotted manner (the applied quantity: 0.05-1.0μ) is wound, is inserted in the flexible sleeve pipe 2. In addition, 1000-10000 spherical organic or inorganic beads, balloons or powder per 1m<2> of 1-3μ in diameter are mixed in the paint of silicone resin or fluoro resin in the sound reducing interposing material 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a noise-reducing fluid pipe in a double pipe of a fluid pipe used for construction around water such as heating and hot water supply in a building, and a noise-reducing intermediary material in the double pipe of the fluid pipe. It is about.

[0002]

2. Description of the Related Art In a construction around water such as heating and hot water supply in a building, a supply part such as a water heater and a use part such as a water tap are connected by a flexible fluid pipe and the fluid pipe is connected. The so-called sheath tube method, in which the tube is inserted into a flexible sheath tube and piped to the back of a wall or the like, has become widespread (for example, see Jpn.
1-332880).

[0003] In the silencing structure of a fluid pipe by the above-mentioned sheath pipe method, when the water tap is closed after use and the flow of water is suddenly stopped, the water pressure in the fluid pipe near the water tap suddenly increases, Due to the return, water collides with the inner wall of the fluid pipe, causing a water hammer phenomenon. Against the sound generated by this water hammer phenomenon, the fluid pipe is inserted into the sheath pipe and protected, so the sound insulation of the sheath pipe The effect was able to mute the sound to some extent.

[0004] However, in the above-mentioned silence structure of the fluid pipe by the sheath pipe method, since the fluid pipe is flexible, when the water in the pipe is suddenly stopped, a waving phenomenon occurs in the fluid pipe together with the water hammer phenomenon. As a result, the fluid pipe may collide with the inner surface of the sheath pipe, generating a loud collision sound and causing damage to the fluid pipe. This is resolved, intervening material is interposed in the space formed between the fluid pipe and the sheath pipe,
There is a muffling structure of a fluid pipe which can muffle the collision sound between the fluid pipe and the sheath pipe which is generated together with the water hammer phenomenon by this intervening material (see Japanese Patent Application Laid-Open No. 4-316786).

[0005]

SUMMARY OF THE INVENTION
In the sheath tube construction technique disclosed in Japanese Patent No. 2880, it is difficult to insert a fluid tube through the sheath tube. Also, JP-A-4-316786
The technology disclosed in Japanese Patent Application Laid-Open Publication No. H11-163873 includes a buffer layer having a buffering effect on the side contacting the outer surface of the fluid pipe and a film layer having a good slippage on the side contacting the inner surface of the sheath pipe, as intervening materials in the sound deadening structure. . However, it is stated that only a specific example of the film layer having good slippage is formed of a synthetic resin such as polypropylene, polyethylene, or polyester.

[0006] In other words, it is composed of a film layer of good slippery polypropylene, polyethylene, polyester or the like fixed on the surface of a resilient and resilient material such as foamed rubber or foamed resin which is a buffer layer. This means that the interposition material becomes. However, actually, when working in the field, even if a fluid pipe wrapped with an interposer in which the film with good slip is fixed to the surface of the buffer layer is inserted into the sheath pipe, slippage is poor and smooth and quick operation is performed. Can not do.

[0007] When polypropylene, polyethylene, polyester, or the like, which is a conventional slippery film layer, is used alone, the static friction coefficient of the molecule is JIS.
As a result of measurement with K7125-1987, it was approximately 0.7. As a result, it has been found that the insertion operation is extremely difficult particularly at a portion where the sheath tube is long or bent.

Further, when the fluid pipe is taken out of the sheath pipe together with the intervening material in order to replace the old fluid pipe with a new one, sliding resistance acts and the removal operation can be easily performed. There was a problem that there was no.

In view of the above, the present invention provides a silicone resin and a fluororesin on the surface of a buffer layer and a synthetic resin film such as polyvinyl chloride, polystyrene, polypropylene, polyethylene, polyester, polyvinylidene chloride, and polytetrafluoroethylene. Or a layer obtained by laminating a resin of a copolymer type or a polymer blend type of these resins in the form of a dot to form a sound absorbing intervening material, and providing a sound absorbing fluid pipe formed by winding the sound absorbing intervening material. Especially for that purpose.

[0010]

In order to solve the above-mentioned problems, the present invention employs the following technical means. In the invention described in claim 1, the buffer layer on the side contacting the outer surface of the fluid tube and the silicone resin, fluororesin, or a copolymer type of these resins for improving the sliding on the side contacting the inner surface of the sheath tube. A technical means was adopted in which a flexible fluid pipe wound around a sound-absorbing intervening material in which a film layer of a polymer blend type resin applied on the surface in a dot shape was laminated was inserted into a flexible sheath pipe.

According to the second aspect of the present invention, the first aspect is provided.
The technical means that the film of the film layer in the described invention employs a knitted fabric, a woven fabric, a non-woven fabric, or an uneven film.

According to the third aspect of the present invention, in a double pipe in which a flexible fluid pipe through which a fluid such as hot water or water passes is inserted into a flexible sheath pipe, the fluid is formed in a long sheet shape, A sound-absorbing interposer that continuously winds the outer surface of a pipe in the longitudinal direction and inserts it into a sheath tube, and improves the buffer layer on the side that contacts the outer surface of the fluid tube and the slip on the side that contacts the inner surface of the sheath tube. A technique of laminating a film layer in which a resin of a silicone resin, a fluororesin, or a copolymer type or a polymer blend type of these resins is applied in a dot pattern on the surface is employed.

According to the fourth aspect of the present invention, the third aspect is provided.
In addition to the invention described in (1), a technical means of mixing spherical beads, powder, or balloon into a coating of a silicone resin or a fluorine resin as a sound-absorbing intervening material is adopted.

According to the fifth aspect of the present invention, the third aspect is provided.
Alternatively, in addition to the invention described in claim 4, a silicone resin, a fluororesin, or a copolymer type or polymer blend type resin of these resins is applied to the film of the sound deadening intervening material in a dot-like manner and the adhesion amount is 0.05 μm. The technical means of setting to 1.0 μm was adopted.

According to the sixth aspect of the present invention, in the fourth aspect,
Or in addition to the fifth aspect of the present invention, organic or diameter of the inorganic has adopted spherical beads 1Myu～3myu, balloons, powder and 1 m ² per the technical means of 1000 to 10000 pieces having.

According to the seventh aspect of the present invention, the third aspect is provided.
The technical means that the film of the film layer in any one of the inventions according to any one of claims to 6 employs a knitted fabric, a woven fabric, a nonwoven fabric, or an uneven film.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As a result of employing the above technical means, the present invention provides a sound absorbing intervening material having a buffer layer having a buffer effect on the side contacting the outer surface of the fluid pipe and a buffer layer having a buffer effect on the side contacting the inner surface of the sheath pipe. A silicone resin is applied to an aluminum vapor-deposited film to form a 0.5μ dot-shaped coating film and laminated, and a slippery sound-absorbing intervening material is wound around the outer peripheral surface of the fluid pipe, and this sound-absorbing intervening material is wound. When the fluid pipe is inserted into the sheath pipe, the point of contact between the silicone resin, which is the outer surface of the silencer, and the inner surface of the sheath pipe is in point contact. A sound absorbing intervening material is obtained in a double pipe of a sound absorbing fluid pipe and a fluid pipe which can be performed.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG.
This will be described in detail with reference to FIG. As shown in FIG. 1, the fluid pipe 1 is made of a synthetic resin such as polyethylene,
A flexible tube that can bend in any direction.
The sheath tube 2 is formed of a synthetic resin, and has, for example, a corrugated tubular shape and has flexibility to bend in an arbitrary direction.

A fluid pipe 1 is inserted and piped into the sheath pipe 2 in a state where the sheath pipe 2 is piped behind a wall in a building, and a supply of a water heater or the like is performed through the fluid pipe 1. Section and a used section such as a water tap are connected.

The sound-absorbing intervening material 3 is formed in a long sheet having a predetermined width, and has a buffer layer 4 having a buffer effect, and polyvinyl chloride, polystyrene, polyethylene, polyester, polypropylene, poly-vinyl fixed on the surface of the buffer layer 4. A three-layered film layer 5 of vinylidene chloride, polytetrafluoroethylene, or the like coated with a silicone resin 6, a fluororesin, or a copolymer of these resins, or a resin of a polymer blend in a dot-like manner to improve the slippage. It has a structure.

The buffer layer 4 is made of a material having elasticity and high restoring force, such as foamed rubber or foamed resin.

In this embodiment, as shown in FIG. 1, a sound-absorbing intervening material 3 in which silicone resin 6 is applied to the outer surface of the fluid pipe 1 in a dot-like manner is wound while the buffer layer 4 is in contact therewith. By inserting the fluid pipe 1 into the sheath pipe 2 together with the silencing intervening material 3 coated with the silicone resin 6 in a dot-like manner, as shown in FIG. The silencing material 3 to which the resin 6 is applied in the form of dots is interposed.

Next, a specific embodiment of the sound-absorbing intervening material 3 will be described. Aluminum is deposited on a polyester film 38μ, the strength is maintained on the opposite side with a polypropylene cloth, and polystyrene having a sound-absorbing effect is added thereto. Affixing the foam, the polyester film was diluted 30 times with toluene to 1 part of silicone resin,
What was applied by each well-known coating method so that it might become 0.5 g / m < ² >.

Also, instead of positively applying the silicone resin 6 and the fluororesin in the form of dots, the film itself of the film layer is made of a knitted cloth, a woven cloth, a non-woven cloth, or an uneven film, whereby As a result, as a portion that comes into contact with the inner surface of the sheath tube, it becomes dot-shaped, so that the effect is similarly exerted even if it is applied to the whole. In addition, it is needless to say that the coating can be performed only on the projecting portion of the film. In this case, it is economical because a special coating method does not need to be adopted.

Further, a fluororesin is applied in a dot form instead of the silicon resin 6. Further, a urethane silicon copolymer is applied in a dot form instead of the silicon resin 6. Examples in which spherical acrylic powder having a diameter of 1 μm to 3 μm is mixed into each of the above-mentioned paints of the silicone resin 6, the fluororesin, and the urethane silicone copolymer and applied in a dotted manner can be considered as examples.

In addition to the above embodiments, a spherical resin 7 having a diameter of 1 μm to 3 μm, or a powder or a balloon is mixed into a coating of silicone resin or fluorine resin to reduce the contact area. Further, it is preferable that the coating amount is covered in the range of 0.05 μm to 1.0 μm, and it has been found that when the amount exceeds this range, a further negative effect is produced.

The spherical beads 7, balloons and powders can be used both organically and inorganically, and the amount used is also one.
For m ² , spherical particles having a diameter of 1 μm to 3 μ
It is good to mix 1 to 10,000 pieces.

The coating method may be gravure offset printing, silk screen printing, blanket roll method, reverse roll method, or the like.
Any method can be suitably selected as long as it can be applied to 0 μm.

The operation for obtaining the slipperiness of the film according to the above configuration is possible from the following. Silicon (silicon) or fluorine is applied in a point-like manner in an easily peelable state, and a sliding property is obtained by a bearing phenomenon using the peeled silicon or fluorine.
As a result of measurement by SK7125-1987, it was about 0.1 or less. By mixing silicon or fluorine with fine beads and applying the mixture in a dot-like manner, slip is obtained by the bearing effect of silicon or fluorine and beads.

A silicon or fluorine film can be formed by diluting silicon (silicon) and fluorine with a solvent, coating the film on a film in a dot form, drying the solvent, and cross-linking and crystallizing the silicon or fluorine. 1). Normally 0.5g to form a film with less peeling of silicon or fluorine
/ M ² or more of silicon or fluorine to form a film.

Silicon or fluorine can be strengthened by applying a coating solution obtained by diluting solvent type silicon or fluorine with water or a solvent at a coating amount of 0.05 to 0.2 g / m ^{2 to} the film. To form a film easily peeling of silicon or fluorine which is weak. The crystallized silicon and fluorine in the film formed above are separated by friction and are scattered on the surface. By utilizing this phenomenon, the film is given a slipperiness by using the peeled silicon and fluorine as a buffer material to obtain the same effect as a ball bearing (FIG. 2).

Solvent-type silicon is dissolved by stirring with a solvent (such as toluene) or water at a high speed, and the amount of the silicone to be applied to a film or the like is set to 0.1.
By applying at 13 g / m ² , discontinuous application of silicon can be performed, and slipperiness can be obtained.

When diluting silicon or fluorine with a solvent or water, fine beads are mixed and mixed at 0.05 to 0.2 g / m 2.
It applied in dots at ² coating amount. The film is made slippery by the bearing effect of the microbeads not fixed to the film and the peeling silicon or fluorine.

Next, the operation of the muffling structure will be described. A buffer layer 4 having a buffering effect on the side where the sound-absorbing intervening material 3 of the fluid pipe 1 contacts the outer surface of the fluid pipe 1 and a silicon or fluorine having good slippage on the side contacting the inner surface of the sheath pipe 2 are dotted. When the fluid pipe 1 is inserted into the sheath tube 2 together with the sound absorbing material 3 while the sound absorbing material 3 is wound around the outer surface of the fluid tube 1 because of the double structure with the film layer 5 applied to the ,
Without a large sliding resistance acting between the outer surface of the silencing member 3 and the inner surface of the sheath tube 2, the film layer 5 coated with silicon or fluorine in a dot-like manner and the inner surface of the sheath tube 2 with good sliding properties. , The operation of inserting the fluid pipe 1 can be performed smoothly and in a short time.

In particular, where the sheath tube 2 is long or bent, the insertion operation becomes extremely easy, and the effect is remarkably exhibited.

When the water in the fluid pipe 1 is suddenly stopped in the piping state of the fluid pipe 1, the water pressure increases rapidly in the pipe, and when the water returns, the water collides with the inner wall of the fluid pipe 1 so that the water pressure is increased. In addition to the hammer phenomenon, the fluid pipe 1 may undulate, and the collision between the fluid pipe 1 and the sheath pipe 2 may generate a collision sound. However, regarding the sound generated by the water hammer phenomenon, the fluid pipe 1
Is protected by being inserted into the sheath tube 2, so that the sound can be suppressed by the soundproofing effect of the sheath tube 2.

Further, since the silencing member 3 can continuously cover the outer surface of the fluid pipe 1 in the longitudinal direction, the silencing effect against the sound generated by the water hammer phenomenon can be further enhanced.

As for the sound of collision between the fluid pipe 1 and the sheath pipe 2, since the sound damping material 3 is interposed in the space between the fluid pipe 1 and the sheath pipe 2, the noise of the sound damping material 3 is reduced. Due to the buffer effect of the layer 4, the waving phenomenon of the fluid pipe 1 is prevented.
2 can eliminate the collision sound.

Therefore, not only the sound caused by the water hammer phenomenon generated when the water tap is opened and closed, but also the collision sound caused by the waving phenomenon of the fluid pipe 1 can be eliminated, giving the user discomfort. Can be prevented, and the possibility that the fluid pipe 1 collides with the sheath pipe 2 to be damaged can also be prevented.

Further, in the noise reduction structure of the fluid pipe 1, when the fluid pipe 1 is taken out of the sheath pipe 2 together with the noise reduction intervening material 3 in order to replace the old fluid pipe 1 with a new one, The film layer 5 coated with silicon or fluorine in a dot-like manner without slippage between the outer surface of the outer tube 3 and the inner surface of the sheath tube 2 and the sheath tube 2 has good sliding properties.
With the contact with the inner surface of the fluid pipe 1, the work of extracting the fluid pipe 1 can be easily performed.

Therefore, it is possible to reliably prevent the noise canceling intervening material 3 from being broken or torn in the middle and being unable to be removed.

In the silencing structure of the fluid pipe 1,
Since the sound absorbing silencing material 3 is formed in a long sheet shape and the outer surface of the fluid pipe 1 can be continuously wound in the longitudinal direction, the inner shape of the sheath pipe 2 which is bent and flattened is formed. The sound absorbing medium 3 is filled in the space between the fluid pipe 1 and the sheath pipe 2, whereby the fluid pipe 1 can be properly held in the sheath pipe 2.

It should be noted that the present invention is not limited to the configuration of the above embodiment, but can be embodied with the following modifications. A film layer 5 in which silicon or fluorine is applied in a dot-like manner as the sound-absorbing intervening material 3 has a multilayer structure including a layer made of a synthetic resin and a layer on the surface of which a metal such as aluminum is deposited. Further, the silencing intervening material 3 has a multiple structure. Further, a reinforcing material for increasing the strength is provided between the layers of the silencing material 3.

Inserting the fluid pipe 1 into the sheath tube 2 together with the sound absorbing material 3 with the end of the sound absorbing material 3 fixed to the fluid pipe 1 with a tape or the like. In this way, the fluid pipe 1 and the sound absorbing material 3 can be smoothly fed into the sheath pipe 2.

At an appropriate position on the inner surface of the sound damping material 3, an adhesive surface with a release paper is provided in advance, and when the fluid pipe 1 is inserted into the sheath tube 2, the sound damping material 3 is peeled off while removing the release paper. To be attached to

[0046]

According to the present invention, as a result of employing the above configuration,
The following effects can be obtained. (1) When the fluid pipe is inserted into the sheath tube together with the sound absorbing material, the contact area between the outer surface of the sound absorbing material and the inner surface of the sheath tube is reduced by point contact, so that a large sliding resistance acts. In addition, the insertion operation can be performed smoothly and in a short time.

(2) A silicone (silicon) resin or a fluororesin is applied in a dot-like manner so as to be easily peeled off, and a sliding property is obtained by a bearing phenomenon using the silicon resin or the fluororesin to be peeled off.

(3) By mixing a silicone resin or a fluorine resin with spherical minute beads and applying the mixture, a slipping property is obtained by a bearing effect of the silicon resin or the fluorine resin and the beads.

(4) Even when the fluid pipe is withdrawn from the inside of the sheath tube together with the sound damping material for replacement, the contact area between the outer surface of the sound damping material and the inner surface of the sheath tube is reduced due to point contact, so that the contact area becomes small. A large amount of sliding resistance does not act, and the extraction operation can be performed smoothly.

(5) Since the silencing member can continuously wind the outer surface of the fluid pipe in the longitudinal direction, the silencing effect against the sound generated by the water hammer phenomenon can be enhanced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a sound deadening fluid pipe embodying the present invention.

FIG. 2 is an enlarged longitudinal sectional view showing a part of the sound deadening fluid pipe of the present invention.

[Explanation of symbols]

1 Fluid pipe 2 Sheath pipe 3 Sound-absorbing material 4 Buffer layer 5 Film layer 6 Silicon resin 7 Spherical beads

Claims (7)

[Claims] 1. A buffer layer on the side contacting the outer surface of the fluid tube, and a silicone resin for improving the slip on the side contacting the inner surface of the sheath tube.
A flexible fluid pipe with a flexible fluid pipe wound around a sound-absorbing intervening material laminated with a film layer in which a fluororesin or a copolymer type or polymer blend type resin of these resins is applied on the surface in a dot-like manner has flexibility A double pipe silencing fluid pipe which is inserted into a sheath pipe. 2. The double-pipe silencing fluid pipe according to claim 1, wherein the film of the film layer is a knitted cloth, a woven cloth, a non-woven cloth, or an uneven film. 3. A double pipe in which a flexible fluid pipe for passing a fluid such as hot water or water is inserted into a flexible sheath pipe, formed in a long sheet shape, and an outer surface of the fluid pipe is arranged in a longitudinal direction. A sound absorbing intervening material that is continuously wound and inserted into the sheath tube, and a buffer layer on the side contacting the outer surface of the fluid tube, and a silicone resin, a fluororesin, which improves the slip on the side contacting the inner surface of the sheath tube. Alternatively, a sound-absorbing intervening material in a double pipe of a fluid pipe, characterized by laminating a film layer in which a resin of a copolymer type or a polymer blend type of these resins is applied to the surface in a dot-like manner. 4. The sound-absorbing intervening material in a double pipe of a fluid pipe according to claim 3, wherein spherical beads, powder, or balloons are mixed in a silicone resin or fluorine resin paint as the sound-absorbing intervening material. 5. A silicone resin for a film of a sound absorbing intervening material,
The coating amount of the fluororesin or a resin of a copolymer type or a polymer blend type of these resins in a dot-like manner is set to 0.05 μm to 1.0 μm. Sound-absorbing intervening material in a double pipe of a fluid pipe. 6. An organic or inorganic spherical bead, balloon or powder having a diameter of 1 to 3 μm per 10 m ² .
5. The method according to claim 4, wherein the number is from 00 to 10,000.
Or a sound deadening intervening material in a double pipe of a fluid pipe according to claim 5. 7. The double fluid pipe according to claim 3, wherein the film of the film layer is made of a knitted fabric, a woven fabric, a nonwoven fabric, or an uneven film. Sound-absorbing materials in piping.