Refrigerant filling type rotary compressor

A technology of rotary compressors and compression mechanisms, applied in the field of compressors, can solve problems affecting compressor performance, leakage, etc., and achieve the effects of improving reliability, high efficiency, and reducing performance loss

Active Publication Date: 2014-02-05
GUANGDONG MEIZHI COMPRESSOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the common refrigerant-filled rotary compressor has the following defects: due to the existence of the injection valve and the charging port, the high-pressure gas charged in the gap of the injection valve and the charging port will not be further compressed when the piston moves to the charging port. compression discharge
It will become the extra clearance volume of the compressor, which is called the clearance volume formed by the injection valve, which affects the performance of the compressor
At the same time, when the piston moves to the filling port, the compressed and undischarged gas in the compression chamber may also leak to the suction chamber

Method used

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  • Refrigerant filling type rotary compressor
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  • Refrigerant filling type rotary compressor

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Embodiment Construction

[0035] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0036] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying Describes, but does not indicate or imply that the device or element referred...

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Abstract

The invention discloses a refrigerant filling type rotary compressor comprising a casing, a compression mechanism, an injection tube and an injection valve. The compression mechanism includes a cylinder, a main bearing, a vice bearing, a crankshaft, a piston and a slip sheet, the inner wall of a cylinder cavity of the cylinder is provided with a filling opening, and a filling channel with a filling hole is arranged on the cylinder. The injection valve is in a close state to isolate the filling hole and the filling opening when the pressure in the cylinder cavity is greater than the pressure in the filling hole, and the injection valve is in an open state to connect the filling hole and the filling opening when the pressure in the cylinder cavity is less than the pressure in the filling hole. When the injection valve is in the close state, a clearance which is between the injection valve and the filling opening and capable of entering a compressed gas is called the clearance volume formed by injection valve, the ratio range of the clearance volume formed by injection valve to cylinder suction volume is 0.3-1.5%. The refrigerant filling type rotary compressor can reduce the performance loss of the refrigerant filling type rotary compressor.

Description

technical field [0001] The invention relates to the field of compressors, in particular to a refrigerant-filled rotary compressor. Background technique [0002] Generally, the working process of the refrigerant-filled rotary compressor is that when the compressor suction ends, the pressure in the compression chamber of the compressor is lower than the pressure of the refrigerant injection port, and the injection valve opens one-way to compress the injection gas in the chamber. With the movement of the piston, the volume of the compression chamber gradually decreases, and the gas pressure gradually increases. When the pressure in the compression chamber is equal to the pressure of the refrigerant injection port, the injection valve is closed. With the further movement of the piston, the volume of the compression chamber is further reduced. When the gas pressure in it is slightly higher than the exhaust pressure, the compressor exhaust valve opens and the compressor starts to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C18/356
Inventor 杨国用
Owner GUANGDONG MEIZHI COMPRESSOR
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