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Multi-cylinder two-stage variable capacity compressor system and its operation mode switching control method

A variable capacity compressor and compressor technology, applied in the fields of compressors, refrigeration and air conditioning, can solve the problems of reduced compressor capacity, increased power consumption, refrigerant leakage, etc., to reduce capacity output, reduce leakage loss, high The effect of capacity and operational efficiency

Active Publication Date: 2017-10-31
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

[0008] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the variable capacity compression mechanism in the prior art due to the leakage of the refrigerant in the variable capacity switching mechanism, which leads to a decrease in the capacity of the compressor and an increase in power consumption, thereby A multi-cylinder two-stage variable capacity compressor and a control method for switching operation modes thereof are provided

Method used

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  • Multi-cylinder two-stage variable capacity compressor system and its operation mode switching control method
  • Multi-cylinder two-stage variable capacity compressor system and its operation mode switching control method
  • Multi-cylinder two-stage variable capacity compressor system and its operation mode switching control method

Examples

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Effect test

Embodiment 1

[0061] Such as figure 1 , a compression part provided with a variable volume mechanism includes a cylinder 1-15, a roller 1-16, a slide plate 1-17, and a pressure chamber 1-29 arranged on the tail side of the slide plate 1-17 and a pin 1-17 The back pressure chamber 1-28 of 18 lower ends. The pressure chamber 1-29 communicates with the first-stage exhaust through the pressure channel 1-23 (consisting of the lower flange, the lower flange cover plate and the internal channel or external pipeline of the cylinder), and its internal pressure is always maintained at the intermediate pressure ( See image 3 ), the exhaust channel 1-30 communicates with the mixer through the pipeline, and the exhaust of the low-pressure stage cylinder 1 and the low-pressure stage cylinder 2 is connected to the suction of the high-pressure stage cylinder 1-7 through the mixer and the suction pipe 1-22 of the high-pressure stage cylinder. breath. The pressure switching of the control chamber at the ...

Embodiment 2

[0069] Such as Figure 4 , a compression part provided with a variable volume mechanism includes a cylinder 1-15, a roller 1-16, a slide plate 1-17, and a pressure chamber 1-29 arranged on the tail side of the slide plate 1-17 and a pin 1-17 The back pressure chamber 1-28 of 18 lower ends. The pressure chamber 1-29 communicates with the first-stage exhaust through the pressure channel 1-23 (consisting of the lower flange, the lower flange cover plate and the internal channel or external pipeline of the cylinder), and its internal pressure is always maintained at the intermediate pressure ( See image 3 ); the exhaust channel 1-30 of the low-pressure stage cylinder is formed by the internal channel or external pipeline of the pump body partition and the cylinder. The pressure switching of the control chamber at the lower end of the pin is realized by two solenoid valves (the first solenoid valve 5 and the second solenoid valve 6).

[0070] There is also a bypass branch conne...

Embodiment 3

[0075] See Figure 5 and Figure 6 , a compression part provided with a variable volume mechanism includes a cylinder 1-15, a roller 1-16, a slide plate 1-17, and a pressure chamber 1-29 arranged on the tail side of the slide plate 1-17 and a pin 1-17 The back pressure chamber 1-28 of 18 lower ends. The pressure chamber 1-29 communicates with the first-stage exhaust through the pressure channel 1-23 (consisting of the lower flange, the lower flange cover plate and the internal channel or external pipeline of the cylinder), and its internal pressure is always maintained at the intermediate pressure ( See image 3), the exhaust channel 1-30 communicates with the mixer through the pipeline, and the exhaust of the low-pressure stage cylinder 1 and the low-pressure stage cylinder 2 is connected to the suction of the high-pressure stage cylinder 1-7 through the mixer and the suction pipe 1-22 of the high-pressure stage cylinder. breath. The pressure switching of the control cham...

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Abstract

The invention provides a multi-cylinder two-stage variable-capacity compressor system. The multi-cylinder two-stage variable-capacity compressor system comprises a compressor in which a plurality of sets of rotating type compression mechanism parts are contained, wherein the compression mechanism parts comprise at least one high-pressure-stage rotating type compression mechanism part and at least two low-pressure-stage rotating type compression mechanism parts; one compression mechanism part in the low-pressure-stage compression mechanism parts is provided with a variable-capacity switching mechanism and further comprises an intermediate communicating pipeline introducing air suction pressure or intermediate pressure of the compressor to the variable-capacity switching mechanism. Air suction pressure or intermediate pressure is introduced to the variable-capacity mechanism by the multi-cylinder two-stage variable-capacity compressor so that the running modes of the variable-capacity compressor can be changed, the front and back pressure difference (between the head and the tail of a pin nail) of the variable-capacity mechanism is reduced, leakage loss caused by pressure difference is reduced, and the running efficiency of the compressor can be improved. The invention further relates to a control method of switching of running modes of the multi-cylinder two-stage variable-capacity compressor system.

Description

technical field [0001] The invention belongs to the technical field of compressors, refrigeration and air conditioning, and in particular relates to a multi-cylinder two-stage variable capacity compressor system and a control method for switching operation modes thereof. Background technique [0002] The variable capacity technology commonly used in rotary compressors is to design a single-stage double-cylinder or multi-cylinder to perform non-compression operation of a certain compression mechanism at low load, so as to reduce power and improve the efficiency of the compressor and refrigeration cycle system. The variable capacity control technology of the compressor is an important means to control the variable capacity operation of the rotary multi-cylinder variable capacity compressor when the load changes. [0003] Toshiba patent CN200580045710.5 discloses a two-cylinder variable-capacity compressor that adopts a cylinder unloading and variable-capacity adjustment method...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C23/00F04C18/356F04C28/18
CPCF04C18/356F04C23/001F04C28/18
Inventor 吴健陈瑞祥杨欧翔陈圣罗惠芳邹鹏柯达俊廖李平
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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