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
  • 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
  • F16L55/0331—Noise absorbers by inserting an elongated element in the pipe

Definitions

• the invention relates to a device for damping noise in tubular connections for sanitary falls of untreated and / or used water in the building, and more particularly for single falls.
• All these devices relate essentially to the composition of multilayer tubes and in particular to the sound-absorbing layer aimed at preventing, along the walls of the pipes, the propagation of the noises generated by the effluents conveyed.
• the Applicant has therefore endeavored to act no longer on limiting the vibration effect of the walls, as in the previously cited prior art, but directly on the source and the transmission of the noises generated in the fall system. sanitary, namely on tubular fittings.
• this type of soundproofing product significantly increases the price of the sanitary chute and involves a relatively bulky technical sheath which is not always acceptable on the site.
• the object of the invention aims to remedy these various drawbacks and makes it possible to significantly improve the soundproofing of standard connection systems used in the construction of a sanitary chute.
• the noise dampening device in the tubular connections for sanitary falls of waste and / or waste water in the building is characterized in that it uses at least one layer or row of wires or strips arranged in a circular manner against the internal wall of a tubular connection, in order to constitute a flexible curtain, tubular deformable during the passage of the effluents.
• a circular ring is inserted by elasticity or gluing in the expansion chamber of the tubular connection during the mounting of the "storey rods". From the underside of this ring descend flexible wires or strips which may have different rectangular, toric or other configurations. Their number and shape are the result of a compromise between the required sound absorption characteristics and the need to avoid any obstruction that could hinder the evacuation of effluents, particularly when it comes to WC waste water.
• the flexible wires or straps are fixed to the lower end of a pipe from the sanitary chute and in such a way that after fitting the pipe into the previously mentioned expansion chamber, the wires and straps constitute a flexible curtain against the internal wall of the tubular connection.
• the flexible curtain thus constituted by one or more rows of wires or strips, said rows being able to be parallel or continuously wound, has multiple advantages:
• FIGURE 1 is a sectional view of a sanitary fall of valve and / or waste water.
• FIGURE 2 is a sectional view of a connection panty provided with a noise damping device according to the invention and fixed using a circular ring in an expansion chamber.
• FIGURES 3, 3a, 3b are alternative embodiments of Figure 2, the noise damping device being attached to the lower end of a pipe of the sanitary chute.
• FIGURES 4a to 4d present alternative embodiments of the flexible curtain, Figures 4b, 4d illustrating on an enlarged scale the detail C of Figure 4a.
• FIGURE 5 is a block diagram showing the deformation of the flexible strips during a lateral evacuation of the effluents.
• FIG. 1 shows a sanitary fall of waste and waste water forming a single fall (1) and comprising plastic pipes (2) made of PVC grooves internally helically, connected to a pipe (3) for discharging the effluents, it - even connected to the sewer collector (not shown), as well as at each level a tubular connection forming connection pants (4) of sanitary appliances (5) (WC - baths - sinks - washing machines ... ).
• the connection pants (4) are of the standard type, that is to say made of rigid thermoplastic material, in particular PVC.
• connection panty (4) d 'a noise damping device (7) according to the invention and comprising a ring (8) provided on the underside with series of flexible strips (9) which hang against the internal walls of said connection pants.
• This ring (8) can be made of any material insensitive to the effluents conveyed in the sanitary chute as soon as the material chosen has sufficient rigidity so that said ring can be held in position in the upper expansion chamber (10) of the pants of connection (4), where it can be glued or polyfused in this said chamber. It must also have sufficient elasticity to allow the positioning of the device (7) in the chamber (10) either by the upper expansion chamber (most common case), or in renovation by the lower stitching orifice (6 ).
• the straps (9) were preferably made of flexible, acoustic insulating material, such as an elastomer or an EPD (Ethylene - Propylene - Diene - Monomer) and have a rectangular section of 5 X 1 mm or circular with a diameter of 1 to 3 mm.
• EPD Ethylene - Propylene - Diene - Monomer
• a triple curtain (11) of strips leaves from the ring (8) as far as the lower pipe (2 ′) receiving the connection pants (4) by its male end, and in such a way that all of the connection orifices (6) are masked by the strips (9) forming a curtain (11).
• connection orifices In order to ensure effective masking of the connection orifices in all circumstances, it is advisable to provide for the strips (9) to be introduced 2 to 3 cm in the rest position inside the lower pipe (2 ') supporting the connection pants.
• the number of strips (9), their thickness, their flexibility, their shape will be chosen according to the desired acoustic efficiency while respecting the flexibility criteria required to facilitate the flow of the devices connected to the descent.
• This evacuation will also be all the more effective for WCs as the rules of the art recommend the use of stitching pants whose maximum angles ⁇ are 67 e 30 or even 45 ° relative to the vertical.
• the flexible strips (9) are of forms bent towards the inside of the connector, so as to be located a few millimeters from the tap holes (6) to prevent any risk of obstruction by solid waste discharged from the toilet.
• the flexible strips (9) are arranged by any suitable means against the external wall (12 ') of the pipe (2 ").
• the curtain (11) then constitutes a kind of valve temporarily guiding the effluents with damping of the noises generated by the hydraulic shock of the latter against the internal wall of the connection pants (4), then then returns to its initial vertical position in front of the tapping hole (6 ') as soon as the flow stops.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Curtains And Furnishings For Windows Or Doors (AREA)
• Pipe Accessories (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=9475411

Family Applications (1)

Country Status (3)

Families Citing this family (1)

Citations (3)

• 1995
  • 1995-01-24 FR FR9500750A patent/FR2729737A1/fr active Granted
• 1996
  • 1996-01-23 WO PCT/FR1996/000111 patent/WO1996023160A1/fr active Application Filing
  • 1996-01-23 AU AU46258/96A patent/AU4625896A/en not_active Abandoned

Patent Citations (3)

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