REFRIGERANT COMPRESSOR AND COOLER ON WHICH IT IS MOUNTED

摘要

PROBLEM TO BE SOLVED: To suppress the occurrence of carboxylic acid due to thermal decomposition by friction heat of a slide member and hydrolysis and the occurrence of sludge in accordance with it by composing refrigerator oil by polyvinyl ether compound as a main component and making the refrigerator oil have a specific constitution ratio per constitution unit. SOLUTION: A single body of HFC system or its mixture refrigerant is sealed in a bottom part of a sealed container 1. The oil which is used as refrigerator oil is soluble with the refrigerant. To say concretely, it contains a polyvinyl ether compound having a constitution unit represented by a formula as a main component and has a constitution ratio of alkyl group having the number of carbons of 1 to 2 of 40 to 100weight% and alkyl group having the number of carbons of 2 to 3 of 0 to 60weight%, which are denoted by R4 per constitution unit. Consequently, it is possible to suppress the thermal decomposition due to friction heat of a slide member and the occurrence of sludge by combining polyvinyl ether oil having a specific structure and the specific slide member in a limited manner.