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High-pressure-ratio linear compressor with stepped piston

A technology of linear compressor and high pressure ratio, applied in piston pumps, mechanical equipment, machines/engines, etc., can solve the problems of difficult control, bulky, low reliability, etc., and achieve wide application range and two-stage pressure matching Good, good cooling effect

Pending Publication Date: 2022-05-31
WUHAN GAOXIN TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This approach makes the system very complicated, which brings problems such as bulky system, heavy weight, difficult control, high cost and low reliability.

Method used

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  • High-pressure-ratio linear compressor with stepped piston
  • High-pressure-ratio linear compressor with stepped piston

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Embodiment Construction

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0035] The following description serves to disclose the present invention to enable those skilled in the art to carry out the present invention. The preferred embodiments described below are only examples, and those skilled in the art can conceive of other obvious modifications. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present invention.

[0036] Those skilled in the art should understand that in the disclosure of the present invention, the terms "vertical", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by ...

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Abstract

The high-pressure-ratio linear compressor comprises a stepped piston compression system, and the stepped piston compression system comprises the stepped piston, a first-stage air cylinder, a second-stage air cylinder and a middle pressure cavity; a first-stage step of the step piston slides in the first-stage air cylinder to form a first-stage compression cavity, a second-stage step of the step piston slides in the second-stage air cylinder to form a second-stage compression cavity, and the middle pressure cavity is adjacent to the first-stage compression cavity and the second-stage compression cavity. A first-stage exhaust valve for connecting and disconnecting the middle pressure cavity and the first-stage compression cavity is arranged in the middle pressure cavity, and a second-stage air suction valve for connecting and disconnecting the second-stage compression cavity and the middle pressure cavity is arranged in the second-stage compression cavity. The stepped piston structure is adopted, the pressure of working medium gas is increased through two-stage compression, the total pressure ratio is high, the matching relation and power distribution of the two-stage pressure ratio can be achieved by changing the diameter ratio of the two-stage piston, the structure is compact, and the two-stage pressure matching performance is good.

Description

technical field [0001] The invention relates to the field of oil-free compressors with a high pressure ratio (the ratio of the exhaust pressure to the suction pressure is greater than 10), in particular to a high pressure ratio linear compressor with a stepped piston. Background technique [0002] Some application scenarios are very sensitive to the use of lubricating oil. Lubricating oil will block the orifice of Joule-Thomson throttling refrigerators, reduce the cleanliness of air compressor exhaust, and reduce the efficiency of heat exchangers in refrigerators and heat pumps. Therefore, Application scenarios such as Joule-Thomson throttling refrigerators, high-cleanliness air compressors, low-temperature refrigerators, and high-temperature heat pumps all require oil-free compressors to provide unidirectional flow of gas with high cleanliness and high pressure ratio. [0003] Most traditional rotary compressors, such as reciprocating piston compressors, require lubricating...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B25/02F04B25/00F04B39/10F04B39/06F04B39/00F04B39/12F04B35/04
CPCF04B25/02F04B25/005F04B39/10F04B39/06F04B39/0005F04B39/123F04B35/04
Inventor 黄立孙建黄太和曾勇苏俊霏潘奇黄泽华王赟
Owner WUHAN GAOXIN TECH
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