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Air cycle machine

A technology of air cycle machines and fans, which is applied to air handling equipment, mechanical equipment, aircraft parts, etc., and can solve problems such as collision failure, friction and wear

Pending Publication Date: 2021-09-10
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The ACM shaft works at high speed, and the conventional contact seal (the sealing material is usually metal), is prone to problems such as friction, wear, and friction failure at high speeds.

Method used

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Examples

Experimental program
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Embodiment Construction

[0023] see in conjunction Figure 1 to Figure 4 As shown, according to an embodiment of the present invention, an air cycle machine is provided, including a compressor 1 and a fan 2, the compressor 1 and the fan 2 share a rotating shaft 100, and the fan base 21 of the fan 2 is configured with Bearing chamber 211, the bearing chamber 211 is provided with a bearing 101, the bearing 100 can specifically adopt a dynamic pressure radial bearing, the rotating shaft 100 is supported on the bearing 101, and the first end of the rotating shaft 100 is connected with The fan blade 102, the end wall of the bearing chamber 211 close to the fan blade 102 is provided with a first seal 3, the first seal 3 is sleeved on the outside of the rotating shaft 100, the first There is a first radial sealing gap between the sealing member 3 and the rotating shaft 100 . In this technical solution, through the setting of the first radial sealing gap, there is a non-contact sealing structure between the ...

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PUM

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Abstract

The invention provides an air cycle machine which comprises a compressor and a fan, the compressor and the fan share a rotating shaft, a bearing chamber is constructed on a fan seat of the fan, a bearing is arranged in the bearing chamber, the rotating shaft is supported on the bearing, a first end of the rotating shaft is connected with fan blades, the end wall of the side, close to the fan blades, of the bearing chamber is provided with a first sealing piece, the first sealing piece is arranged on the outer side of the rotating shaft in a sleeving mode, and a first radial sealing gap is formed between the first sealing piece and the rotating shaft. According to the air cycle machine, non-contact sealing is formed between the rotating shaft which rotates at a high speed and the first sealing piece, so that the air tightness between the fan and the compressor can be ensured while the defects of frictional wear and friction failure caused by contact type sealing between the fan and the compressor in the prior art can be overcome.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to an air cycle machine. Background technique [0002] In the modern aircraft environmental control system, the air cycle machine (ACM) uses air as the medium to provide the cabin with air of desired pressure, temperature and humidity. An air cycle machine consists of a turbine (also known as an expander) rotating about a common axis, a compressor (also known as a compressor), and a fan that compresses the heat source air and sends it downstream. The compressed air expands in the turbine to realize the conversion of internal energy and mechanical energy, so as to drive the compressor and fan to rotate. [0003] The ACM shaft works at high speed, and the conventional contact seal (the sealing material is usually metal) is prone to problems such as friction, wear, and friction failure at high speed. Contents of the invention [0004] Therefore, the present inv...

Claims

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Application Information

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IPC IPC(8): F04D29/10B64D13/06
CPCF04D29/102B64D13/06B64D2013/0603
Inventor 陈云飞符渡黄建平刘茂龙于艳翠
Owner GREE ELECTRIC APPLIANCES INC