Fluid silencer

Patent metadata

Field	Value
Publication number	US-2022349509-A1
Application number	US-202017621222-A
Country	US
Kind code	A1
Filing date	Jun 9, 2020
Priority date	Jul 31, 2019
Publication date	Nov 3, 2022
Grant date	—

Abstract

A fluid silencer includes: an expansion pipe disposed on a pipe through which a fluid containing noise sources flows and having an accommodation space therein; a viscous fluid received in the accommodation space; a noise introducing member disposed between the pipe and the expansion pipe to seal the accommodation space and allowing the noise sources to be introduced into the accommodation space therethrough; at least one partition member disposed in the accommodation space and dividing the accommodation space in a flow direction of the fluid; multiple baffle members disposed on one surface of the partition member and forming multiple sound absorbing spaces into which the noise sources introduced into the accommodation space are dispersedly introduced; and an elastic member disposed between the partition member and the baffle members and contracted/expanded by the viscous fluid entering/leaving the sound absorbing spaces as the noise sources are introduced into the sound absorbing spaces.

First claim

1 . A fluid silencer comprising:
an expansion pipe disposed on a pipe through which a fluid containing noise sources flows and having an accommodation space therein; a viscous fluid received in the accommodation space; a noise introducing member disposed between the pipe and the expansion pipe to seal the accommodation space and allowing the noise sources to be introduced into the accommodation space therethrough; at least one partition member disposed in the accommodation space and dividing the accommodation space in a flow direction of the fluid; multiple baffle members disposed on one surface of the partition member and forming multiple sound absorbing spaces into which the noise sources introduced into the accommodation space are dispersedly introduced; and an elastic member disposed between the partition member and the baffle members and contracted/expanded by the viscous fluid entering/leaving the sound absorbing spaces as the noise sources are introduced into the sound absorbing spaces, whereby the noise sources are converted and dissipated into thermal energy due to friction between the viscous fluid and the baffle member.

2 . The fluid silencer according to claim 1 , further comprising:
a sleeve member disposed between the noise introducing member and the baffle members and preventing the noise sources having passed through the noise introducing member from being directly introduced into the sound absorbing spaces.

3 . The fluid silencer according to claim 2 , wherein the sleeve member is integrally formed with the baffle member.

4 . The fluid silencer according to claim 1 , wherein the baffle members are arranged radially around the noise introducing member such that the multiple sound absorbing spaces are formed in a circumferential direction of the accommodation space.

5 . The fluid silencer according to claim 1 , wherein the baffle members have different diameters and are arranged to be concentric with one another such that the multiple sound absorbing spaces are formed in a radial direction of the accommodation space.

6 . The fluid silencer according to claim 1 , wherein each of a pair of adjacent baffle members sharing a common sound absorbing space has a friction surface contacting the viscous fluid, the friction surface being corrugated to increase a contact area with the viscous fluid.

7 . The fluid silencer according to claim 6 , wherein the friction surface is corrugated in a travel direction of the noise sources entering/leaving the sound absorbing spaces.

8 . The fluid silencer according to claim 1 , wherein the baffle members and the elastic member are disposed on front and rear surfaces of the partition member, respectively.

Assignees

• Ct Advanced Meta Mat

Inventors

• Park Jong Jin
• Kwak Jun Hyuk
• Lee Hak Joo
• Choi Tae In
• Jung Min Seok

Classifications

• F16L55/05

  Buffers therefor · CPC title

• F16L55/033 Primary

  Noise absorbers (F16L55/027 takes precedence) · CPC title

• G10K2210/112

  Ducts · CPC title

• G10K11/16

  Methods or devices for protecting against, or for damping, noise or other acoustic waves in general (G10K11/36 takes precedence) · CPC title

• G10K2210/3224

  Passive absorbers · CPC title