WO2000017563A1 - Protection sonique pour conduits - Google Patents

Protection sonique pour conduits Download PDF

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Publication number
WO2000017563A1
WO2000017563A1 PCT/JP1998/004252 JP9804252W WO0017563A1 WO 2000017563 A1 WO2000017563 A1 WO 2000017563A1 JP 9804252 W JP9804252 W JP 9804252W WO 0017563 A1 WO0017563 A1 WO 0017563A1
Authority
WO
WIPO (PCT)
Prior art keywords
soundproof cover
piping
cover
sound absorbing
pipe
Prior art date
Application number
PCT/JP1998/004252
Other languages
English (en)
Japanese (ja)
Inventor
Yasuyuki Ohira
Mitsuo Hori
Original Assignee
Shishiai-Kabushikigaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shishiai-Kabushikigaisha filed Critical Shishiai-Kabushikigaisha
Priority to PCT/JP1998/004252 priority Critical patent/WO2000017563A1/fr
Publication of WO2000017563A1 publication Critical patent/WO2000017563A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/21—Rigid pipes made of sound-absorbing materials or with sound-absorbing structure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/02—Energy absorbers; Noise absorbers
    • F16L55/033—Noise absorbers
    • F16L55/0336—Noise absorbers by means of sound-absorbing materials

Definitions

  • the present invention relates to a soundproof cover having a soundproof layer applied to a pipe of a building water supply / drainage device or an air conditioner. More specifically, the present invention relates to a soundproof cover for piping having light weight, excellent handleability, and excellent soundproof performance.
  • a soundproof cover for piping having light weight, excellent handleability, and excellent soundproof performance.
  • the present invention has been made in view of such circumstances, and an object of the present invention is to provide a soundproof cover for piping that is lightweight, has excellent handleability, and has excellent soundproof performance.
  • a soundproof cover provided with a soundproof layer applied to a plumbing system of a building water supply / drainage device or an air conditioner, wherein a sound absorbing film is provided on an inner surface of the cover.
  • a spacer is attached to the outside of the pipe and the force bar is attached around the pipe, the spacer is used to secure a space between the sound absorbing film and the pipe.
  • the gist is a soundproof cover for piping (hereinafter simply referred to as cover). As shown in FIG. 2, when the cover 11 is attached around the pipe 10 as shown in FIG. 2, a space is secured between the sound absorbing film 13 and the pipe 10 by the spacer 14.
  • FIG. 1 is a perspective view showing a state where a cover of the present invention is attached to a pipe.
  • FIG. 2 is an enlarged sectional view of a main part of a pipe to which the cover of FIG. 1 is attached.
  • Fig. 3 shows the sliding of the cover, leaving both ends to fit into the L pipe of the pipe (straight pipe). It is the perspective view which showed the example attached so that it was possible.
  • FIG. 4 is a schematic diagram showing a dipole in the base material of the sound absorbing film on the inner surface of the cover of the present invention.
  • FIG. 5 is a schematic diagram showing a state of a dipole in a base material of the sound absorbing film when vibration energy is applied.
  • FIG. 6 is a schematic diagram showing a state of a dipole in a base material of a sound absorbing film when an active ingredient is blended.
  • FIG. 7 is a graph showing the relationship between the frequency (H z) and the sound pressure level (dB A) of the pipe (500) according to Example 1, Comparative Example 1, and Comparative Example 3.
  • FIG. 8 is a graph showing the relationship between the frequency (H z) and the sound pressure level (dB A) of the pipe (750) according to Example 2, Comparative Example 2, and Comparative Example 4.
  • FIG. 9 is a schematic diagram showing a device for measuring noise (sound pressure level) of each pipe of Examples 1 and 2 and Comparative Examples 1 to 4.
  • BEST MODE FOR CARRYING OUT THE INVENTION The cover of the present invention is applied to a plumbing system of a building plumbing system or an air conditioner to efficiently absorb and mitigate noise (sound energy) generated from the plumbing. It is a soundproofing material for pipes that can provide sound insulation and create a comfortable indoor environment and living space.
  • the cover 11 shown in FIGS. 1 and 2 is fitted so as to be fitted from one end of the pipe 10, has a soundproof layer 12, and has an inner surface thereof (the surface facing the pipe).
  • a sound-absorbing film 13 is disposed on the outside, and a spacer 14 is attached to the outside of the sound-absorbing film 13 (on the piping side).
  • the cover 11 shown in FIG. 1 and FIG. 2 is a tubular type which is fitted into the pipe 10 and fixed to the pipe 10; for example, it has a sheet shape. May be wound around the peripheral surface of the pipe 10 and fixed at the ends to be attached to the peripheral surface of the pipe 10.
  • Examples of the soundproofing layer 12 constituting the cover 11 include a soundproofing layer, a vibration damping layer, a vibration damping layer and a sound absorbing layer, a sound insulating layer, a vibration damping layer and a sound absorbing layer, Examples thereof include a combination of a sound insulation layer, a vibration isolation layer, and a sound absorption layer, and a combination of a combination of a sound insulation layer and a sound absorption layer.
  • the material, structure, shape, and the like of the material are completely arbitrary. The choice of material, structure, and shape should be determined as appropriate, taking into account the type and size of the piping to be applied, the required soundproofing performance, and other factors.
  • the sound insulating layer 15 may be made of, for example, a vinyl chloride resin such as a vinyl chloride resin, a vinyl acetate-vinyl chloride copolymer, an ethylene-vinyl chloride copolymer, a vinylidene chloride-vinyl chloride copolymer, or an ethylene-acetic acid.
  • a vinyl chloride resin such as a vinyl chloride resin, a vinyl acetate-vinyl chloride copolymer, an ethylene-vinyl chloride copolymer, a vinylidene chloride-vinyl chloride copolymer, or an ethylene-acetic acid.
  • the sound-absorbing layer 16 is made of a resin such as urethane, black lipene, styrene-butadiene copolymer, polyethylene, polypropylene, ethylene acetate butyl, or styrene, alone or in combination.
  • an open cell structure (foam structure) can be suitably used.
  • the foaming ratio in the case where the sound absorbing layer 16 has a foamed structure is preferably 10 to 50 times from the viewpoint of ensuring good sound absorbing properties.
  • the sound absorbing layer 16 may be subjected to a perforation process, a slit process, or the like in order to further enhance the sound absorbing property.
  • a vibration damping layer or a vibration damping layer may be combined as a part of the sound insulating layer 12.
  • the vibration damping layer for example, Rubber such as acrylonitrile-butadiene rubber (NBR), styrene-butadiene rubber (SBR), butadiene rubber (BR), natural rubber (NR), isoprene rubber (IR), etc. is blended with the base resin and filled with filler.
  • NBR acrylonitrile-butadiene rubber
  • SBR styrene-butadiene rubber
  • BR butadiene rubber
  • NR natural rubber
  • IR isoprene rubber
  • the vibration-proofing layer may be filled with a filler such as carbon black or calcium carbonate if necessary (for adjusting the hardness).
  • the cover 11 of the present invention includes the above-described soundproof layer 12, and further includes an inner surface of the force bar 11, that is, an inner surface of the soundproof layer 12 (in this example, an inner surface of the sound absorbing layer 16). ), A sound absorbing film 13 is disposed.
  • the material, structure, and shape of the sound absorbing film 13 are not particularly limited as long as it can receive noise (sound energy) from the pipe 10 and vibrate, and can absorb and mitigate the noise (sound energy).
  • Particularly preferred is a film obtained by adding an active ingredient for increasing the amount of dipole moment to a base material constituting the sound absorbing film to form a film.
  • the sound absorbing film containing the active ingredient will be described in detail.
  • a base material constituting the sound absorbing film for example, polyvinyl chloride, polyethylene, polypropylene, ethylene-vinyl acetate copolymer, polymethyl methacrylate, vinylidene polyfluoride, polyisoprene, polystyrene, styrene-butadiene-acrylonitrile copolymer
  • Polymers such as polymers, styrene-acrylonitrile copolymer, acrylonitrile-butadiene rubber (NBR), styrene-butadiene rubber (SBR), butadiene rubber (BR), natural rubber (NR), and isoprene rubber (IR) A blend of these can be used.
  • polychlorinated fly Is preferred because it has good moldability and is inexpensive.
  • the present inventors have elucidated the following sound absorption mechanism through research on sound absorbing materials. Vibration is generated when noise (sound energy) collides with the base material of the sound absorbing film. At this time, as shown in FIG. 5, displacement occurs in the dipole 22 existing inside the base material 21. The displacement of the dipole 22 means that each dipole 22 inside the base material 21 rotates or its phase is shifted. It can be said that the arrangement state of the dipoles 22 inside the base material 21 before the sound energy is applied as shown in FIG. 4 is in a stable state. However, as shown in Fig.
  • the amount of the dipole moment in the above-described base material varies depending on the type of the polymer serving as the base material. Also, even if the same polymer is used as the base material, The amount of dipole moment generated in the base metal changes depending on the temperature and frequency of the sound when it is applied. The amount of dipole moment also changes depending on the magnitude of the sound energy applied to the base material. For this reason, it is desirable to select the polymer that has the largest amount of dipole moment in consideration of the temperature, sound frequency, energy level, etc.
  • the active component contained in the base material is a component that dramatically increases the amount of dipole moment in the base material, and the active component itself has a large amount of dipole moment or the active component itself. Although the dipole moment is small, it means a component that can dramatically increase the dipole moment in the base material by blending the active component. For example, the amount of the dipole moment generated in the base material 21 under given temperature conditions, sound frequency, and energy level is the same as shown in Fig.
  • N-cyclohexyl benzothiazyl di-2-sulfenamide CBS
  • N-tert-butyl benzothiazyl di-2-sulfenamide BSS
  • N-oxyzet One or more selected from compounds containing a benzothiazyl group, such as lenbenzothiazyl-2-sulfenamide (OBS) and N, N-diisopropylbenzothiazyl-2-sulfenamide (DPBS); benzene 2- (2'-Hydroxy_3 ')-(3 ", A", 5 ", 6" tetrahydrophtalidamide methyl) with benzotriazole which has an azole group bonded to the ring as its mother nucleus 5'-Methylphenyl ⁇ benzotriazole (2 HPMMB), 2- ⁇ 2'-hydroxyl 5'-methylphenyl) -benzotriazol (2HMPB), 2- ⁇ 2 ' — 3'-t-
  • HMBP 2-hydroxy-4-methoxybenzophenone
  • HM 2-hydroxy4-methoxybenzophenone-15-sulfonic acid
  • BPS benzophenone group
  • the content of the active ingredient is desirably 10 to 300 parts by weight based on 100 parts by weight of the base material. This is because if the content of the active ingredient is less than 10, the sufficient effect of dramatically increasing the amount of dipole moment in the base material cannot be obtained, and the content of the active ingredient is less than 300.
  • the amount of dipole moment in the above-mentioned active component varies depending on the type of active component similarly to the amount of dipole moment in the base material. Even when the same active ingredient is used, the amount of dipole moment generated in the base metal changes depending on the temperature when sound energy is applied. Also, the amount of dipole moment changes depending on the magnitude of the sound energy applied to the base material. For this reason, it is desirable to select and use the active component that gives the largest amount of dipole moment in consideration of the temperature and energy at the time of application.
  • the active ingredient to be mixed in the base material it is good to select the one with a similar value in consideration of the easiness of compatibility between the active ingredient and the polymer serving as the base material, that is, the SP value.
  • a corrosion inhibitor, a dye, and the like can be added to the sound absorbing film as needed.
  • a conventionally known method can be used as a molding method for blending the above components and molding the blend into a film.
  • a sound insulating sheet may be laminated and integrated with the sound absorbing film, or another type of sound absorbing sheet, for example, a foam sound absorbing sheet, a fiber sheet, or paper may be laminated.
  • the cover 11 of the present invention has a spacer 14 attached to the outside of a sound absorbing film 13 arranged on the inner surface of the soundproof layer 12.
  • the compressor 14 may be of any structure so long as a space can be secured between the sound absorbing film 13 and the piping 10 when the cover 11 is attached around the piping 10.
  • the plastic net shown in FIGS. 1 and 2 can be mentioned.
  • the spacer 14 is made of a plastic fixed to the inner surface of the soundproof layer 12 (outside the sound absorbing film 13) at a predetermined interval along the longitudinal direction of the cover 11. And the like can be cited as preferred examples.
  • FIG. 2 when the cover 11 is attached around the piping 10, a space is secured between the sound absorbing film 13 and the piping 10 by the spacer 14. Then, the non-contact portion that does not contact the pipe 10 is generated in the sound absorbing film 13.
  • the sound absorbing layer 16 constituting the sound insulating layer 12 has an open-cell structure, a large number of holes also exist on the surface of the sound absorbing layer 16, and the inner surface of the sound absorbing film 13 is formed on the inner surface of the sound absorbing film 13.
  • the sound absorbing film 13 has a non-contact portion that does not contact the pipe 10 and a completely non-contact portion that does not contact the pipe 10 or the soundproof layer 12 (the sound absorbing layer 16). to be born. These parts vibrate by receiving the noise (sound energy) from the pipe 10 directly, so that very effective absorption and mitigation of noise (sound energy) is achieved.
  • the inner surface (sound absorbing film 13) of the cover does not contact the pipe 10 and the spacer 14 is interposed between the pipe 10 and the pipe. When fitting the cover 11 into the pipe 10, the spacer 14 realizes smooth insertion of the cover 11.
  • the cover 11 shown in FIGS. 1 to 3 has an outer surface (more specifically, an outer surface of the soundproof layer 12).
  • a heat-shrinkable film 17 made of polyvinyl chloride, polyethylene, polyester, polypropylene, or polystyrene. Covered.
  • the cover 11 In the case of the cover 11 whose outer surface is covered with the heat-shrinkable film 17, the cover 11 is simply fitted into the pipe 10 and heated to obtain the heat-shrinkable film 17 on the outer surface. Heat shrinks, and the cover 1 1 is tightened and attached to the pipe 10, so that adhesive or adhesive The cover 1 1 can be attached to the rooster 10 without any intervention. Further, like the cover 11 shown in FIG. 3, the both ends of the pipe 10 may be left so as to be slidably attached to the peripheral surface of the pipe 10.
  • Fig. 3 shows a case where the force bar 11 is applied to the pipe 10 (straight pipe). The cover 11 is attached, leaving both ends fitted into the L pipe, and this is made slidable. Things. In other words, the cover 11 in FIG.
  • the cover 11 is fitted into the pipe 10 without using an adhesive or an adhesive. This is heated to thermally shrink the film 17 on the outer surface, so that the cover 11 is fastened to the pipe 10 and attached. This allows the cover 11 to slide around the pipe 10. For this reason, if the cover 11 is attached to the pipe 10 in advance, if it becomes necessary to cut the pipe 10 to an appropriate length at the site according to the situation at the construction site, the cover 11 will be connected to the pipe 10. Only one side of the pipe 10 needs to be slid, and only the other end of the pipe 10 needs to be cut, so that the length of the pipe 10 can be adjusted more efficiently.
  • Example 1 A sound insulation sheet (thickness l mm) having a surface density shown in Table 1 below and a mold chip product obtained by crushing urethane and reshaping the resin in a resin matrix composed of chlorinated vinyl resin (Density 0.05) (manufactured by INOAT CORPORATION), and a sound-absorbing sheet (thickness: 5 mm) having an open-cell structure was laminated and integrated to form a soundproof layer. On the sound absorbing sheet side of this soundproof layer, DCHBSA was added at a ratio of 100 parts by weight to 100 parts by weight of chlorinated polyethylene, and a sound absorbing film sheeted to a thickness of 0.1 mm was arranged. Furthermore, a plastic net was attached to the outside.
  • DCHBSA was added at a ratio of 100 parts by weight to 100 parts by weight of chlorinated polyethylene, and a sound absorbing film sheeted to a thickness of 0.1 mm was arranged. Furthermore, a plastic net was attached to the outside.
  • the laminate was rounded to the outer circumference of a 50- ⁇ diameter pipe, and the outer surface was covered with a polyethylene film to produce a tubular cover. Then, as shown in FIGS. 1 and 2, the cover 11 obtained in this manner is fitted around the pipe 10 (straight pipe) and heated, thereby shrinking the polyethylene film 17 and covering it. One 11 was attached to piping 10.
  • Example 2
  • a cover was prepared in the same manner as in Example 1 except that the sound absorbing film and the spacer were not used, and attached to the pipe. Comparative Example 2
  • a cover was prepared and attached to the pipe in the same manner as in Comparative Example 1 except that the pipe was adjusted to a diameter of 75 ⁇ .
  • the frequency effects of the pipes with the covers of Examples 1 and 2 and Comparative Examples 1 and 2 were measured.
  • the results are shown in Fig. 7 for Example 1, Comparative Example 1 and Comparative Example 3 using a pipe with a diameter of 500, Example 2, Comparative Example 2 and a comparison using a pipe with a diameter of Example 4 is shown in FIG.
  • the frequency effect was measured by measuring the drainage noise generated when piping and running water as shown in Fig. 9 using a noise meter (LA-21) placed 1 m away from the piping.
  • LA-21 noise meter
  • the attenuation of the sound is about dBA and about 17 to 23 dBA. Furthermore, the OA values of the samples according to Examples 1 and 2 are 40 dBA and 48 dBA, which are approximately 8 dBA when compared with those of Comparative Examples 1 and 2 having the conventional cover. Attenuation is observed, indicating that the example according to the example has excellent noise attenuation (sound insulation performance).

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pipe Accessories (AREA)

Abstract

Protection sonique constituée par une couche de protection sonique appliquée aux conduits d'un système de plomberie et d'une installation de climatisation de bâtiments, caractérisée par le fait qu'elle comprend une couche d'absorption sonique située sur une surface intérieure de la couche de protection sonique et un élément d'écartement monté sur un côté extérieur de la couche d'absorption et conçu pour laisser un espace entre ladite couche et un conduit quand on monte la protection sonique autour du conduit, ce qui permet de limiter le poids de ladite protection, d'améliorer sa facilité de manipulation et d'augmenter également sa capacité de protection sonique.
PCT/JP1998/004252 1998-09-21 1998-09-21 Protection sonique pour conduits WO2000017563A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP1998/004252 WO2000017563A1 (fr) 1998-09-21 1998-09-21 Protection sonique pour conduits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1998/004252 WO2000017563A1 (fr) 1998-09-21 1998-09-21 Protection sonique pour conduits

Publications (1)

Publication Number Publication Date
WO2000017563A1 true WO2000017563A1 (fr) 2000-03-30

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ID=14209034

Family Applications (1)

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PCT/JP1998/004252 WO2000017563A1 (fr) 1998-09-21 1998-09-21 Protection sonique pour conduits

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WO (1) WO2000017563A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008063755A (ja) * 2006-09-05 2008-03-21 Kubota Corp 排水集合管
JP2008063756A (ja) * 2006-09-05 2008-03-21 Kubota Corp 排水集合管
JP2014006297A (ja) * 2012-06-21 2014-01-16 Nagoya Oil Chem Co Ltd 遮音吸着材料
GB2570511A (en) * 2018-01-30 2019-07-31 Industrial Noise & Vibration Centre Ltd Pipeline noise control system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07158528A (ja) * 1993-12-06 1995-06-20 Toyoda Gosei Co Ltd 消音ホース
JPH09217955A (ja) * 1996-02-09 1997-08-19 Kucho Giken Kogyo Kk 吸音フレキシブルダクト
JPH09330086A (ja) * 1996-06-12 1997-12-22 Cci Corp 吸音材料
JPH1096496A (ja) * 1996-07-30 1998-04-14 Cci Corp 防音管部材

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07158528A (ja) * 1993-12-06 1995-06-20 Toyoda Gosei Co Ltd 消音ホース
JPH09217955A (ja) * 1996-02-09 1997-08-19 Kucho Giken Kogyo Kk 吸音フレキシブルダクト
JPH09330086A (ja) * 1996-06-12 1997-12-22 Cci Corp 吸音材料
JPH1096496A (ja) * 1996-07-30 1998-04-14 Cci Corp 防音管部材

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008063755A (ja) * 2006-09-05 2008-03-21 Kubota Corp 排水集合管
JP2008063756A (ja) * 2006-09-05 2008-03-21 Kubota Corp 排水集合管
JP2014006297A (ja) * 2012-06-21 2014-01-16 Nagoya Oil Chem Co Ltd 遮音吸着材料
GB2570511A (en) * 2018-01-30 2019-07-31 Industrial Noise & Vibration Centre Ltd Pipeline noise control system
GB2570511B (en) * 2018-01-30 2020-08-26 Industrial Noise & Vibration Centre Ltd Pipeline noise control system

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