Title:
LOW-NOISE AIR-CONDITIONING AIR DUCT FOR RAILWAY PASSANGER CAR
Document Type and Number:
WIPO Patent Application WO/2023/077849
Kind Code:
A1
Abstract:
Disclosed in the present invention is a low-noise air-conditioning air duct for a railway passenger car, the low-noise air-conditioning air duct comprising an air-conditioning air return port (3), an air-conditioning air supply port (2), an air supply channel, and an air return channel (11). The air-conditioning air supply port is connected to the air supply channel; a silencer (7) is arranged inside the air supply channel below the air-conditioning air supply port; the silencer comprises a left circular arc plate (701) and a right circular arc plate (702); adjacent sides of the left circular arc plate and the right circular arc plate are connected as one piece, and opposite sides thereof respectively extend in an arc shape towards one end of the air supply channel; two ends of the left circular arc plate and the right circular arc plate are respectively closed by reinforcing rib plates (704), such that a sound absorption cavity is formed by means of the enclosure of the left circular arc plate, the right circular arc plate, a bottom plate of the air supply channel, and the reinforcing rib plates at two ends of the air supply channel; sound absorbing micropores (03) are respectively uniformly distributed on the left circular arc plate and the right circular arc plate; and the sound absorbing cavity is filled with sound absorbing cotton for absorbing noise of an air-conditioning unit. The present invention is convenient to machine, and greatly improves the riding comfort of passengers in a passenger compartment.
More Like This:
Inventors:
LIU ZHIYUAN (CN)
MAO YEJUN (CN)
LONG YUAN (CN)
YI KE (CN)
FU YU (CN)
LUO JIANGGUO (CN)
MAO YEJUN (CN)
LONG YUAN (CN)
YI KE (CN)
FU YU (CN)
LUO JIANGGUO (CN)
Application Number:
PCT/CN2022/104032
Publication Date:
May 11, 2023
Filing Date:
July 06, 2022
Export Citation:
Assignee:
CRRC ZHUZHOU LOCOMOTIVE CO LTD (CN)
International Classes:
B61D27/00; G10K11/16
Foreign References:
| CN113928358A | 2022-01-14 | |||
| CN113859287A | 2021-12-31 | |||
| CN111361582A | 2020-07-03 | |||
| CN104118444A | 2014-10-29 | |||
| CN209191958U | 2019-08-02 | |||
| CN208291224U | 2018-12-28 | |||
| CN203844758U | 2014-09-24 | |||
| CN202294164U | 2012-07-04 | |||
| CN203126862U | 2013-08-14 |
Attorney, Agent or Firm:
CHANGSHA ZONEKEY PATENT LAW FIRM (CN)
Download PDF: