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multi-stage compressor

A compressor and exhaust pressure technology, applied in the field of compression machinery, can solve problems such as poor performance reliability of multi-stage compressors, and achieve the effect of ensuring continuity and smoothness and improving performance.

Active Publication Date: 2019-05-31
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to provide a multi-stage compressor to solve the problem of poor performance and reliability of the existing multi-stage compressors

Method used

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Embodiment Construction

[0042] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0043] see figure 1 As shown, according to the first embodiment of the present invention, a multistage compressor is provided, the multistage compressor includes a crankshaft 200 and a multistage cylinder 100, the crankshaft 200 is provided with multistage eccentric parts in the axial direction, and the multistage The eccentric portion is set in one-to-one correspondence with the multi-stage cylinders 100, and the phase difference between the first-stage cylinder 110 and the second-stage cylinder 120 at the start of suction is within the range of 120° to 240°, the second-stage cylinder 120 and the second-stage cylinder 120 The phase difference of the third-stage cylinder 130 at the start of the air intake is in the range of 120° to 240°. According to...

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Abstract

The present invention provides a multistage compressor. The multistage compressor includes a crankshaft and multi stages of cylinders, multi stages of eccentric portions are arranged on the axial direction of the crankshaft, the multi stages of eccentric portions and the multi stages of cylinders are in one-to-one correspondence arrangement, the phase difference of a first stage cylinder and a second stage cylinder is, at the gas intake start time, in the range of 120 degrees to 240 degrees, and the phase difference of the second stage cylinder and a third stage cylinder is, at the gas intake start time, in the range of 120 degrees to 240 degrees. The multistage compressor can avoid the accumulation of a gas in an intermediate cavity of a front stage cylinder and a later stage cylinder to cause too large pressure pulsations of the intermediate cavity, ensures continuity and smoothness of gas intake of the front stage cylinder and the later stage cylinder, and further improves the performance of the multistage compressor.

Description

technical field [0001] The present invention relates to the technical field of compression machinery, more specifically, to a multistage compressor. Background technique [0002] Existing air conditioners or water heater systems mostly use ordinary rotary compressors, but when the air conditioner or water heater is used in a low-temperature environment, the refrigerant flow rate of the compressor is relatively low, and the single-stage pressure ratio of the compressor will be greatly increased when the compressor is running, and the performance will be reduced. The reliability of the long-term operation of the compressor becomes poor, and it is prone to damage. Moreover, the suction connection between the low-pressure stage cylinder and the high-pressure stage cylinder in the current two-stage compression cylinder is not reasonable enough. It often happens that when the high-pressure stage cylinder is at the suction peak, the low-pressure stage cylinder does not reach the ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C23/00
Inventor 王大号胡余生魏会军梁社兵朱红伟刘靖杨欧翔吴健任丽萍邹鹏
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION