Rotary compressor parallel connection system

A compressor and rotor type technology, which is applied in the field of parallel connection system of rotor type compressors, can solve problems such as abnormal wear of the core, large rotor load, and increased input power, and achieve low cost, simple configuration and simple structure.

Active Publication Date: 2015-05-20
MITSUBISHI ELECTRIC GUANGZHOU COMPRESSOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Too much refrigeration oil on the compressor will cause excessive load on the rotor and increase the input power; less oil will cause abnormal wear of the movement and damage the function

Method used

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  • Rotary compressor parallel connection system
  • Rotary compressor parallel connection system
  • Rotary compressor parallel connection system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as figure 1 As shown, a rotary compressor parallel system in a preferred embodiment of the present invention includes a compressor 10 , an oil equalizing pipe 20 , an oil separator 40 and an oil return pipe 50 .

[0034] The compressor 10 of this embodiment is a rotary compressor, which includes a casing 11, a gas-liquid separator 12 connected to the side of the casing 11, and an exhaust pipe 13 arranged on the top of the casing 11. Inside the casing 11 The lower part of the housing 11 is provided with a compression mechanism, which includes a crankshaft, a cylinder 14 and a rolling rotor, and the upper part of the casing 11 is provided with a motor, which includes a rotor and a stator 15 . In the air-conditioning and refrigeration system, the exhaust pipe 13 of the compressor is connected to the oil separator 40 through the high-pressure pipe 30. After the refrigerant is separated from oil and gas by the oil separator 40, the refrigerant passes through the condens...

Embodiment 2

[0058] Such as Figure 7 As shown, the difference between the rotary compressor parallel system of this embodiment and the first embodiment is that the oil outlet 22 of the oil equalizing pipe of this embodiment and the high-pressure piping 30 connecting the exhaust pipe 13 and the oil separator 40 It is different from the way in which the oil outlet 22 of the oil equalizing pipe is directly connected to the exhaust pipe 13 in the first embodiment. When manufacturing the compressor, it is not necessary to weld the oil equalizing pipe 20 on the exhaust pipe 13. Instead, the oil equalizing pipe joint is reserved on the high-pressure piping 30, and the oil outlet 22 of the oil equalizing pipe is installed on the oil equalizing pipe joint of the high-pressure piping 30 when the entire compressor is assembled. The installation of the oil equalizing pipe 20 in this embodiment The structure can reduce the difficulty of manufacturing the compressor.

[0059] Since the high-pressure p...

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Abstract

The invention relates to a rotary compressor parallel connection system which comprises a plurality of compressors, an oil separator, oil balancing pipes and an oil return pipe. The compressors are connected with one another in parallel, and exhaust pipes of the multiple compressors are connected with the same oil separator by high-pressure pipes; oil inlets of the oil balancing pipes are connected with shells of the compressors and are positioned in locations above the lowermost oil level of the compressors, and oil outlets of the oil balancing pipes are connected with the exhaust pipes or the high-pressure pipe; the oil separator is connected with gas suction openings of gas and liquid separators of the compressors by the oil return pipe. The rotary compressor parallel connection system has the advantages that the oil balancing pipes are mounted on the shells of the compressors, surplus refrigerant oil in the compressors can be drained and can be taken back into the shells of the various compressors by the oil return pipe, accordingly, the oil can be automatically balanced, and the rotary compressor parallel connection system is simple in structure and low in cost; the oil inlets of the oil balancing pipes are arranged above the upper end surfaces of cylinders of the compressors, and accordingly oil starvation can be effectively prevented when the compressors run at high speeds.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a rotor compressor parallel system. Background technique [0002] In the refrigeration system, when the compressor is working, a small amount of refrigerated oil (also known as lubricating oil) must be continuously pressed out from the cylinder together with the refrigerant, and enter the pipeline, condenser and evaporator of the refrigeration system. When the refrigerating oil cannot be continuously returned to the compressor, the oil level of the compressor will drop, until the refrigerating oil is exhausted, and the compressor will burn due to lack of oil. Therefore, it is one of the most important issues in the design of the refrigeration system to ensure that the refrigeration oil is continuously returned to the compressor. [0003] With the popularization of energy-saving awareness, multi-connected air-conditioning systems (also known as variable refrigerant flow ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B31/00
CPCF25B31/004F25B2500/05F25B2500/18
Inventor 龙伟强龙伟杰詹泽鹏
Owner MITSUBISHI ELECTRIC GUANGZHOU COMPRESSOR
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