Title:
COMBUSTION ASSEMBLY STRUCTURE OF TURBOJET ENGINE
Document Type and Number:
WIPO Patent Application WO/2021/217792
Kind Code:
A1
Abstract:
Disclosed in the present invention is a combustion assembly structure of a turbojet engine. A guide device and a front cover are respectively provided at two ends of a casing having a cavity structure in the middle, a shaft sleeve coaxial with the casing is fixed on the guide device, and a diffuser is fixed on an outer ring of the other end of the shaft sleeve. The cross section of connecting faces of flow guiding blades and the shaft sleeve along an axis of the shaft sleeve is V-shaped, the outer ring of the shaft sleeve is provided with a double-layer annular combustion cabin of which an end face has a V-shaped cross section along the axis of the shaft sleeve and which is coaxial with the shaft sleeve, the two V-shaped structures enable gas entering from the diffuser to better fit V-shaped wall faces of the double-layer annular combustion cabin, and the gas entering from the diffuser is prevented from flowing back at an air inlet, making a velocity field uniform, optimizing a high speed flow field, and preventing the occurrence of a local high speed area; and a main combustion area of a combustion chamber can be arranged forward, further reducing the outlet temperature of the combustion chamber. Moreover, the present invention facilitates reducing the axial distance between the diffuser and the double-layer annular combustion cabin, thereby decreasing the total length of the engine, reducing the weight of the engine, and facilitating the miniaturization of the combustion assembly of the turbojet engine.
Inventors:
ZHANG QI (CN)
LU BINGHENG (CN)
GUI XIAOWEI (CN)
DAI YUN (CN)
YANG HONGWEI (CN)
LU BINGHENG (CN)
GUI XIAOWEI (CN)
DAI YUN (CN)
YANG HONGWEI (CN)
Application Number:
PCT/CN2020/095374
Publication Date:
November 04, 2021
Filing Date:
June 10, 2020
Export Citation:
Assignee:
NAT INSTITUTE CORPORATION OF ADDATIVE MANUFACTURING XIAN (CN)
International Classes:
F23R3/14; F04D29/54; F04D29/58; F23R3/28; F23R3/52
Foreign References:
| CN108590859A | 2018-09-28 | |||
| CN102878579A | 2013-01-16 | |||
| CN206429274U | 2017-08-22 | |||
| CN209637887U | 2019-11-15 | |||
| CN104847695A | 2015-08-19 | |||
| CN109469922A | 2019-03-15 | |||
| JP5316947B2 | 2013-10-16 |
Attorney, Agent or Firm:
XI'AN TONG DA PATENT AGENCY CO., LTD. (CN)
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