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Compressor

A technology for compressors and motors, applied in the field of compressors, can solve the problems of high ethylene oxide, high solubility of refrigerating machine oil and refrigerant, unsuitable for hydrocarbon refrigerants, etc., and achieves the effect of stable reliability

Inactive Publication Date: 2013-05-08
GUANGDONG MEIZHI COMPRESSOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The base oil of this refrigerating machine oil composition uses polyalkane glycol ether, but its molecular structure contains more ethylene oxide, and the refrigerating machine oil has a relatively large solubility with refrigerant, so it is not suitable for hydrocarbon refrigeration agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Taking R290 refrigerant as an example, in the process of preparing the base oil of refrigerating machine oil, that is, in the process of preparing polyalkane glycol ether, adjust the ethylene oxide CH 2 CHO and propylene oxide CH 2 CH 2 The molar ratio of O is 2 / 3, and the solubility of the refrigerating machine oil and the R290 refrigerant is shown in Table 1. At room temperature and 0.7MPa, R290 refrigerant and refrigeration oil are basically incompatible.

Embodiment 2

[0044] Taking R290 refrigerant as an example, during the preparation process of the base oil of the refrigerator oil, that is, the preparation process of the polyalkane glycol ether, without adding ethylene oxide, the solubility of the refrigerator oil and the R290 refrigerant is shown in Table 1. . When the oil does not contain ethylene oxide, at room temperature and 0.7MPa, the solubility of R290 refrigerant and refrigerating machine oil is 28%.

[0045] From Table 1, it can be found that with the increase of propylene oxide content and the decrease of ethylene oxide, the solubility of refrigeration oil and R290 refrigerant changes from immiscible to compatible.

[0046] Table 1

[0047]

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Abstract

Disclosed is a compressor. A motor is contained in a closed shell. A compression mechanism for compressing refrigerant is connected with the motor through a rotary shaft. The compressor is provided with refrigerating machine oil. The refrigerant is hydrocarbon refrigerant. Base oil of the refrigerating machine oil is made of polyalkane propylene and meets the requirements of a general formula a as followed. More than one of antioxidant, acid catcher, defoamer and squeeze antiwear agent is added into the refrigerating machine oil. The refrigerating machine oil and the hydrocarbon refrigerant are low in solubility. System performance and compressor reliability are both stable when coolant sealing amount is low.

Description

technical field [0001] The present invention relates to a compressor. Background technique [0002] In recent years, for the purpose of protecting the earth's environment, refrigerants used in refrigeration cycle systems have begun to shift from traditional Freon R22 and hydrofluorocarbon HFC to natural refrigerants. Especially hydrocarbon-based refrigerants as natural refrigerants, from From the viewpoint of low global warming coefficient GWP, propane R290 refrigerant has attracted more and more attention. [0003] However, when hydrocarbon-based refrigerants are used in compression refrigerators, when the existing mineral oil, alkylbenzene, and synthetic POE oil are used as lubricating oils, since the base oil and the refrigerant are completely dissolved, the viscosity of the base oil is reduced and the lubricating oil is reduced. Effect. As a result, the wear resistance and sealing performance of the compressor are reduced, and the performance and life of the compressor ...

Claims

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Application Information

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IPC IPC(8): F04B39/00C10M107/34C10M153/04C10N40/30
Inventor 龙春仙
Owner GUANGDONG MEIZHI COMPRESSOR
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