Title:
NOISE ATTENUATION APPARATUS MOUNTED ON THE LIQUID CONDUCTING CONDUITS AND METHOD FOR USING THE SAME
Document Type and Number:
WIPO Patent Application WO/2004/111520
Kind Code:
A1
Abstract:
Noise can be transmitted in solid, liquid and gas, but reflected at interface section between two different materials . Using said principle, a noise insulation component of the noise attenuation apparatus of the invention is made from a material differing in character of the liquid within the conducting couduits, to attenuate the noise of the fluid without stoping its flowing . The noise attenuation apparatus of the invention is simple in construction, broad in noise attenuation frequency, small in bulk, and yet little pressure loss to fluid.
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Inventors:
WANG HONGZE (CN)
Application Number:
PCT/CN2004/000659
Publication Date:
December 23, 2004
Filing Date:
June 21, 2004
Export Citation:
Assignee:
WANG HONGZE (CN)
International Classes:
F16L55/033; F01N1/16; (IPC1-7): F16L55/02; F01N1/16
Foreign References:
| CN2350617Y | 1999-11-24 | |||
| CN2289122Y | 1998-08-26 | |||
| CN2311611Y | 1999-03-24 | |||
| CN85104467A | 1986-12-31 | |||
| CN2238372Y | 1996-10-23 | |||
| US3148745A | 1964-09-15 | |||
| DE19500450A1 | 1995-07-20 | |||
| DE4412517A1 | 1995-10-19 |
Attorney, Agent or Firm:
NTD PATENT & TRADEMARK AGENCY LIMITED BEIJING OFFICE (Block A Investment Plaz, 27 Jinrongdajie 2 Beijing, CN)
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