Elastic foil dynamic pressure air flotation radial bearing, motor and air compressor

An elastic foil and radial bearing technology, applied in the fields of motors, elastic foil dynamic pressure air-floating radial bearings, and air compressors, can solve the problems of smaller inner diameter and reduced performance, and increase the bearing area and improve Bearing performance, the effect of preventing end leakage of the gas film

Active Publication Date: 2022-05-10
GREE ELECTRIC APPLIANCES INC OF ZHUHAI
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] An air-bearing radial bearing and foil are disclosed in the prior art. The inner foil 2 has a working surface facing the rotation axis and a non-rotating surface away from the rotation axis. The working surface, as shown in Figure 2, uses two The inner foils in the opposite direction of rotation are b

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  • Elastic foil dynamic pressure air flotation radial bearing, motor and air compressor
  • Elastic foil dynamic pressure air flotation radial bearing, motor and air compressor
  • Elastic foil dynamic pressure air flotation radial bearing, motor and air compressor

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Example Embodiment

[0036] see in combination Figure 1 to Figure 11 As shown, according to an embodiment of the present invention, an elastic foil dynamic pressure air bearing radial bearing is provided, comprising a bearing seat 1, a top foil 3 arranged in an inner hole of the bearing seat 1, and a top foil 3 supported on the bearing The supporting foil 2 between the inner hole of the seat 1 and the outer peripheral wall of the top foil 3, the top foil 3 is a full-circle structure, that is, the full-circle structure is a complete cylindrical or annular shape as a whole structure. In this technical solution, the top foil 3 has a full-circle structure, that is, it does not have the free end in the prior art, and the inner circle of the bearing top foil does not have the interference of the free end, and the bearing area is increased, so that the radial bearing can be improved. The load-bearing performance is excellent, and the occurrence of the gas film end leakage phenomenon at the free end of ...

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Abstract

The invention provides an elastic foil dynamic pressure air floatation radial bearing, a motor and an air compressor, the elastic foil dynamic pressure air floatation radial bearing comprises a bearing seat, a top foil arranged in an inner hole of the bearing seat and a supporting foil supported between the inner hole of the bearing seat and the peripheral wall of the top foil, and the top foil is of a whole circle structure. According to the radial bearing, interference of the free end does not exist in the inner circle of the top foil of the bearing, the bearing area is increased, and therefore the bearing performance of the radial bearing can be improved, and the phenomenon of gas film end leakage at the free end of the top foil in the prior art is thoroughly eradicated.

Description

technical field [0001] The invention belongs to the technical field of foil bearing design, and in particular relates to an elastic foil dynamic pressure air bearing radial bearing, a motor and an air compressor. Background technique [0002] Gas dynamic pressure bearing (also known as dynamic pressure air bearing) is a dynamic pressure gas bearing with elastic support, such as figure 1 shown. The high-speed rotation of the rotating shaft 101 drives the gas flow between the bearing 102 and the rotating shaft 101, and the viscous gas enters the wedge-shaped area to generate a hydrodynamic pressure effect, forming a high-pressure gas film 103 (also called a dynamic pressure gas film). When the pressure of the high-pressure gas film 103 is large enough, the The rotating shaft 101 rotating at high speed can be suspended. When the rotating shaft rotates at high speed, the high-pressure air film 103 squeezes the bearing 102, and both the top foil (also called the top foil) and t...

Claims

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Application Information

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IPC IPC(8): F16C17/02F16C33/02H02K5/167F04B39/00
CPCF16C17/024F16C33/02H02K5/167F04B39/00F16C2380/26F16C2226/62F16C2240/60
Inventor 陈振贾金信苏久展闫瑾孔祥茹
Owner GREE ELECTRIC APPLIANCES INC OF ZHUHAI
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