Title:
VENTILATION STRUCTURE OF CORE CHAMBER OF TURBOFAN ENGINE HAVING LARGE BYPASS RATIO AND VENTILATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/284354
Kind Code:
A1
Abstract:
A ventilation structure of a core chamber of a turbofan engine having a large bypass ratio, said structure comprising: an outer bypass wall surface (1), a core chamber wall surface (4) and a core casing (7). An outer bypass flow channel (2) is formed between the outer bypass wall surface (1) and the core chamber wall surface (4). A core chamber (6) is formed between the core chamber wall surface (4) and the core casing (7). An air intake annular cavity (3) is provided in the core casing and is located at the upstream position. The air intake annular cavity (3) is used to put the outer bypass flow channel (2) and the core chamber (6) in communication. An exhaust grille (5) is further provided on the core chamber wall surface (4) and is located at a tail position. The exhaust grille (5) is used to discharge cooling gas in the core chamber (6) into the outer bypass flow channel (2). The described structure better achieves the purpose of cooling the surface of the core casing and obtains an improved in-cabin flow heat exchange effect. A ventilation method is also provided.
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Inventors:
SHAN YONG (CN)
YIN HUALI (CN)
LIU HAO (CN)
DENG MING (CN)
ZHAO QIANG (CN)
TAN XIAOMING (CN)
ZHANG JINGZHOU (CN)
YIN HUALI (CN)
LIU HAO (CN)
DENG MING (CN)
ZHAO QIANG (CN)
TAN XIAOMING (CN)
ZHANG JINGZHOU (CN)
Application Number:
PCT/CN2022/088460
Publication Date:
January 19, 2023
Filing Date:
April 22, 2022
Export Citation:
Assignee:
UNIV NANJING AERONAUTICS & ASTRONAUTICS (CN)
International Classes:
F02C7/18
Foreign References:
| CN113606045A | 2021-11-05 | |||
| US20160333728A1 | 2016-11-17 | |||
| US20150361891A1 | 2015-12-17 | |||
| CN101479455A | 2009-07-08 | |||
| CN106555676A | 2017-04-05 |
Attorney, Agent or Firm:
NANJING RUIHONG PATENT & TRADEMARK AGENCY (ORDINARY PARTNERSHIP) (CN)
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