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Rotating shaft supporting device and scroll compressor

A supporting device and shaft technology, applied in the field of compressors, can solve problems such as the inability to reflect the elasticity of the supporting wave foil, affect the life of the compressor, lose the vibration damping effect, etc., and achieve the effects of simple structure, improved mechanical efficiency, and easy processing and installation

Active Publication Date: 2021-04-16
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the crankshaft of the scroll compressor drives the moving scroll to mesh with the fixed scroll to compress the gas, the moving scroll will receive the reaction force of the compressed gas and transmit it to the crankshaft, so that the crankshaft will be affected by unbalanced forces such as gas force, resulting in The vibration of the scroll compressor shaft at low mechanical frequency is relatively large, which produces large noise and affects the life of the compressor
[0003] Patent CN207554578U adopts a circumferentially closed and non-opening support wave foil structure, which ensures that the rotor can still effectively form a compressed air film when it moves to the top foil, preventing the rotor from rubbing against the top foil; but the support wave foil is not closed in the axial direction, The effect of the formed air film will be reduced; if the axial direction of the wave foil is also closed, the self-generated elasticity of the supporting wave foil cannot be reflected, and the vibration damping effect will be lost
[0004] Patent CN210686666U uses an elastic ring to form a flexible support on the rotating shaft, so that the sliding bearing assembly matched with the rotating shaft of the sliding bearing support structure is not easy to damage, but the fixed elastic ring will introduce other components such as stoppers and glands, and the assembly is more cumbersome

Method used

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  • Rotating shaft supporting device and scroll compressor
  • Rotating shaft supporting device and scroll compressor
  • Rotating shaft supporting device and scroll compressor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as Figure 1-3 As shown, a supporting device for a rotating shaft 1 includes a rotating shaft 1 and a bracket, the rotating shaft 1 is installed inside the bracket, an oil hole 101 is provided in the middle of the rotating shaft 1, an oil groove 303 is provided in the bracket, and the side wall of the rotating shaft 1 A communication hole 102 connecting the oil hole 101 and the oil groove 303 is provided on the top, and a damping cavity is provided in the bracket.

[0029] The support includes an upper support 2 and a lower support 3, and the upper support 2 is connected with the lower support 3.

[0030] The upper bracket 2 includes a cover plate 201 , the middle part of the cover plate 201 is provided with an upper connecting ring 202 matched with the rotating shaft 1 .

[0031] Described lower bracket 3 comprises bracket box 301, and described bracket box 301 is the upper end opening structure, and cover plate 201 is arranged on the upper end of bracket box 301...

Embodiment 2

[0039] Such as Figure 1-2 As shown in , 4, a rotating shaft 1 supporting device includes a rotating shaft 1 and a bracket, the rotating shaft 1 is installed inside the bracket, the middle part of the rotating shaft 1 is provided with an oil hole 101, and an oil groove 303 is provided in the bracket, and the rotating shaft 1 A communication hole 102 connecting the oil hole 101 and the oil groove 303 is provided on the side wall, and a vibration damping cavity is provided in the bracket.

[0040] The support includes an upper support 2 and a lower support 3, and the upper support 2 is connected with the lower support 3.

[0041] The upper bracket 2 includes a cover plate 201 , the middle part of the cover plate 201 is provided with an upper connecting ring 202 matched with the rotating shaft 1 .

[0042] Described lower bracket 3 comprises bracket box 301, and described bracket box 301 is the structure of upper end opening, and cover plate 201 is arranged on the upper end of b...

Embodiment 3

[0048] A scroll compressor, comprising the above-mentioned rotating shaft supporting device, including a rotating shaft 1 and a bracket, the rotating shaft 1 is installed inside the bracket, an oil hole 101 is provided in the middle of the rotating shaft 1, and an oil groove is provided in the bracket 303, the side wall of the rotating shaft 1 is provided with a communication hole 102 communicating with the oil hole 101 and the oil groove 303, and a vibration damping cavity is provided in the bracket.

[0049] The support includes an upper support 2 and a lower support 3, and the upper support 2 is connected with the lower support 3.

[0050] The upper bracket 2 includes a cover plate 201 , the middle part of the cover plate 201 is provided with an upper connecting ring 202 matched with the rotating shaft 1 .

[0051]Described lower bracket 3 comprises bracket box 301, and described bracket box 301 is the structure of upper end opening, and cover plate 201 is arranged on the u...

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PUM

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Abstract

The invention discloses a rotating shaft supporting device. The rotating shaft supporting device comprises a rotating shaft and a support, the rotating shaft is installed in the interior of the support, an oil hole is formed in the middle of the rotating shaft, an oil groove is formed in the support, a communicating hole for communicating the oil hole with the oil groove is formed in the side wall of the rotating shaft, and a vibration reduction cavity is formed in the support. According to the rotating shaft supporting device, while stable and reliable work of a shaft system of a scroll compressor is guaranteed, friction between the rotating shaft and parts moving relative to the rotating shaft can be effectively reduced, the efficiency of the compressor is improved, radial vibration of the rotating shaft is reduced, excessive vibration of the compressor is avoided, and noise of the whole machine is at a reasonable level.

Description

technical field [0001] The invention relates to the technical field of compressors, in particular to a rotating shaft support device and a scroll compressor. Background technique [0002] When the crankshaft of the scroll compressor drives the moving scroll to mesh with the fixed scroll to compress the gas, the moving scroll will receive the reaction force of the compressed gas and transmit it to the crankshaft, so that the crankshaft will be affected by unbalanced forces such as gas force, resulting in The vibration of the low-fold mechanical frequency of the scroll compressor shaft is relatively large, which produces large noise and affects the life of the compressor. [0003] Patent CN207554578U adopts a circumferentially closed support wave foil structure without openings, which ensures that the rotor can still effectively form a compressed air film when it moves to the top foil, preventing the rotor from rubbing against the top foil; but the support wave foil is not clo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C29/00F04C29/06F04C29/02F04C18/02
Inventor 陈康张金圈刘一波张荣婷彭家臻温振宇
Owner GREE ELECTRIC APPLIANCES INC