C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
C10M 105/38 (2006.01) C10M 169/04 (2006.01) C10M 171/00 (2006.01) F01C 21/08 (2006.01) F01C 21/10 (2006.01) F04C 18/356 (2006.01) F04C 29/02 (2006.01) F25B 31/00 (2006.01)
Patent
CA 2163924
There are provided a highly durable and efficient refrigerating apparatus and a lubricating oil composition that uses an HFC type refrigerant and is still free from the problem of thermal hydrolysis of polyol-ester type oil and resulting generation of carboxylic acid and sludge so that the refrigerating apparatus and the lubricating oil composition may be used stably for a prolonged period of time. A lubricating oil composition according to the invention comprises as base oil components a polyol-ester type oil formed by reacting specific polyhydric alcohol with a fatty acid, to which tricresylphosphate and epoxy compound comprising glycidyl ether or carbodiimide are added at respective specific rates. A refrigerating apparatus according to the invention uses such a lubricating oil composition as refrigerator oil and comprises a sealed electric driving compressor whose sliding members are made of a material selected from iron type materials, composite materials of aluminum and carbon, iron type materials surface-treated with chromium nitride and ceramic materials.
Komatsubara Takeo
Obokata Yoshinobu
Okajima Masazo
Sunaga Takashi
Takahashi Yasuki
Fetherstonhaugh & Co.
Sanyo Electric Co. Ltd.
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