Lubricating oil for refrigerator with compressor
AssigneeIdemitsu Kosan Co., Ltd.
InventorsYasuhiro Kawaguchi, Nobuaki Shimizu, Masato Kaneko, Hiroshi Nagakawa
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Abstract
Disclosed is a lubricating oil for compression-type refrigerator comprising, as a main component, a polyoxyalkyleneglycol derivative represented by the general formula: R1[(OR2)mOR3]n wherein symbols are as defined in the specification. Said lubricating oil has a favorable compatibility with refrigerants and an excellent lubricating property, and is utilized as the lubricating oil for compression-type refrigerator employing hydrogen-containing fluorocarbon compound refrigerants including R-134a or fluorocarbon compound refrigerants without hydrogen.
Claims6
A refrigerant composition comprising a lubricating oil and a hydrogen-containing fluorocarbon as a refrigerant, wherein the lubricating oil contains, as a main component, a polyoxyalkyleneglycol derivative having the formula CH3—(OC3H6)m—OCH3, wherein m is an integer of 1 to 80, wherein the polyoxyalkyleneglycol derivative has a kinematic viscosity of 2 to 9.70 cSt at 100°C.
A method for effecting lubrication in compression-type refrigerators using a refrigerant, said method comprising employing, as a lubricant, a lubricating oil comprising, as a main component, a polyoxyalkyleneglycol derivative having the formula CH3—(OC3H6)m—OCH3, where m is an integer of 1 to 80, wherein the polyoxyalkyleneglycol derivative has a kinematic viscosity of 2 to 9.70 cSt at 100°C.
Dependencies are inferred from the claim text.