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Refrigerating machine oil composition

A technology of refrigerating machine oil and composition, which is applied in the field of lubricating oil, can solve the problems that the pour point cannot meet the requirements, and achieve the effect of good lubricity and low pour point

Inactive Publication Date: 2018-02-09
FOSHAN SHUNDE FUYANSHENG LUBRICANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing fully synthetic POE refrigeration oil structures are pentaerythritol fatty acid esters and mixed esters formed by pentaerythritol and fatty acids (the carbon number of fatty acids is in the range of 5 to 9), and the lubricity, compatibility, and thermal / chemical stability can reach Compressor operation requirements, but the pour point can not meet the requirements; in the face of higher requirements put forward by the design of refrigeration compressors, the existing fully synthetic refrigeration oil must be developed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A refrigerating machine oil composition, calculated by weight percentage, comprising the following components:

[0022] Refrigeration machine oil base oil I 90% and refrigeration machine oil base oil II 10%; Refrigeration machine oil base oil I is pentaerythritol butyl prepared from pentaerythritol and hexanoic acid; Refrigeration machine oil base oil is neopentyl glycol and valeric acid to prepare neopentyl glycol pentyl esters.

[0023] After testing, the refrigerating machine oil composition of the present invention has a kinematic viscosity of 18-20mm at 40°C. 2 / s, the pour point is below -70°C; other properties are the same as those of commercially available synthetic ester refrigeration oils.

Embodiment 2

[0025] A refrigerating machine oil composition, calculated by weight percentage, comprising the following components:

[0026] Refrigeration machine oil base oil I 49% and refrigeration machine oil base oil II 50%, antioxidant 0.3%, corrosion inhibitor 0.7%; Refrigeration machine oil base oil I is pentaerythritol butyl ester prepared from pentaerythritol and hexanoic acid; Refrigeration machine oil base oil is new Pentyl glycol and valeric acid are prepared to give neopentyl glycol valerate.

[0027] After testing, the refrigerating machine oil composition of the present invention has a kinematic viscosity of 14-18mm at 40°C. 2 / s, the pour point is below -72°C; other properties are the same as those of commercially available synthetic ester refrigeration oils.

Embodiment 3

[0029] A refrigerating machine oil composition, calculated by weight percentage, comprising the following components:

[0030] Refrigeration machine oil base oil I 60% and refrigeration machine oil base oil II 40%; Refrigeration machine oil base oil I is pentaerythritol butyl prepared from pentaerythritol and hexanoic acid; Refrigeration machine oil base oil is neopentyl glycol and valeric acid to prepare neopentyl glycol pentyl esters.

[0031] After testing, the refrigerating machine oil composition of the present invention has a kinematic viscosity of 16mm at 40°C. 2 / s, the pour point is -71°C; other properties are the same as those of commercially available synthetic ester refrigeration oils.

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Abstract

The invention provides a refrigerating machine oil composition. The refrigerating machine oil composition is prepared from, by weight, 1-99% of refrigerating machine oil base oil I and 1-99% of refrigerating machine oil base oil II. The refrigerating machine oil base oil I is one or more of pentaerythritol aliphatic ester prepared from pentaerythritol and fatty acid with carbon numbers C4-C6, andthe refrigerating machine oil base oil II is one or more of pentaerythritol aliphatic ester prepared from neopentyl glycol and fatty acid with carbon numbers C4-C6. The refrigerating machine oil composition and an HFC refrigerant have good compatibility and thermal / chemical stability and good low temperature fluidity, the pour point of the composition is -70 DEG C or below, and the higher requirements for refrigerating machine oil of refrigerating compressors in the special field can be met.

Description

technical field [0001] The invention belongs to the technical field of lubricating oil, and in particular relates to a refrigerating machine oil composition. Background technique [0002] The compression refrigeration system is composed of a refrigeration compressor, a condenser, an expansion valve, an evaporator, etc. The working principle is to use the refrigerant to vaporize and volatilize, absorb the heat of the surrounding medium, reduce the temperature for cooling, and then pass the refrigerant to the air through the compressor. It returns to liquid, then gasifies again, and the cycle repeats. This kind of refrigeration system is widely used in household appliances such as refrigerators and air conditioners, industrial equipment such as cold stores and cold rooms, and commercial equipment such as showcases, beverage and ice cream machines. The compressor is the heart of the above-mentioned compression refrigeration system, and the refrigeration oil that plays the role...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M105/38C10N40/30C10N30/06C10N20/02
CPCC10M105/38C10M2207/2835C10N2030/02C10N2030/06C10N2040/30
Inventor 张军张红德陈梓侠
Owner FOSHAN SHUNDE FUYANSHENG LUBRICANT
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