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Lubricating oil composition for refrigerators and compressors with the composition

A lubricating oil composition, technology of refrigerators, applied in lubricating compositions, machines/engines, components of pumping devices for elastic fluids, etc., capable of solving problems such as the impact of global warming and inability to use

Inactive Publication Date: 2010-03-10
IDEMITSU KOSAN CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, this HFC may also have an impact on global warming, and so-called natural refrigerants such as carbon dioxide, which are more suitable for environmental protection, have attracted attention. can not be used

Method used

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  • Lubricating oil composition for refrigerators and compressors with the composition
  • Lubricating oil composition for refrigerators and compressors with the composition
  • Lubricating oil composition for refrigerators and compressors with the composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-9 and comparative example 1-14

[0157] Refrigerator oil compositions of the combinations shown in Table 2 were prepared, 1,2,3,3,3-pentafluoropropene was used as the refrigerant, and the properties of the above compositions were evaluated. The results are shown in Table 2.

[0158] [Table 2]

[0159] Form 2-1

[0160]

[0161] [table 3]

[0162] Form 2-2

[0163]

[0164] [Table 4]

[0165] Form 2-3

[0166]

[0167]

[0168] It can be seen from Table 2 that the refrigerating machine oil composition (Example 1-9) of the present invention, for the refrigerant 1,2,3,3,3-pentafluoropropene, the two-layer separation temperature exceeds 40 ° C, and when using 1 , 2,3,3,3-Pentafluoropropene has excellent stability in the sealed tube test, and, in the coating Falex friction sintering test, the friction sintering time is long.

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PUM

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Abstract

A lubricating oil composition for refrigerators comprising a base oil which comprises as a main component a polyol ester compound obtained from a polyhydric alcohol selected from among pentaerythritol, dipentaerythritol, trimethylolpropane, and neopentyl glycol and a C 4 to C 20 aliphatic monocarboxylic acid and which has an acid value of 0.02 mgKOH / g or less and a hydroxyl value of 5 mgKOH / g or less. A compressor using the lubricating composition. The lubricating oil composition is applicable to such refrigerators that use a refrigerant having a specific structure, such as an unsaturated fluorinated hydrocarbon compound, and being usable in current car air conditioner systems, and has excellent compatibility with the refrigerant, good sealing properties, capability of imparting a low coefficient of friction to sliding members and, yet, excellent stability. The compressor uses the lubricating composition.

Description

technical field [0001] The present invention relates to a lubricating oil composition for refrigerators and a compressor using the composition, more specifically, the lubricating oil composition for refrigerators has a low global warming coefficient, and can be used in particular as a Refrigerators for specific refrigerants such as unsaturated fluorocarbon compounds used as refrigerants in air-conditioning systems, wherein the lubricating oil composition for refrigerators uses a base oil mainly composed of a specific polyol ester compound. Background technique [0002] Generally, a compression-type refrigerator is composed of at least a compressor, a condenser, an expansion mechanism (expansion valve, etc.), an evaporator, or a drier, which has the function of making the mixed liquid of refrigerant and lubricating oil (refrigeration machine oil) A structure that circulates within a closed system. For this type of compression refrigerator, although it varies depending on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M105/38F04B39/00C10N20/00C10N20/02C10N20/04C10N30/00C10N30/06C10N40/30
CPCC10N2220/302C10N2230/40C10N2220/021F04B39/02F04B39/0215C10N2220/301C10N2210/06C10M2207/2835C10M2217/0403C10N2210/04C10M2221/003C10M2213/0623C10M2207/026C10N2230/10C10N2210/08C10N2220/30C10M2201/0413C10N2230/06C10M2209/1033C10M2201/0603C10M171/008C10M105/38F04B53/18C10N2220/022C09K5/045C09K2205/126C10M105/40C10M2207/283C10M2207/289C10N2030/02C10N2030/06C10N2040/30C10N2030/36C10N2010/08C10N2010/12C10N2010/14C10N2020/02C10N2020/04C10N2030/10C10N2020/097C10N2020/099C10N2020/101C10N2030/40F04B39/00
Inventor 金子正人池田晴智加藤崇行星田隆宏井上正树池岛昌三武藤正誉山下雅史
Owner IDEMITSU KOSAN CO LTD