| 摘要 |
PROBLEM TO BE SOLVED: To restrict the deposition of lead from a sliding bearing into the refrigerator oil in a device using a mixture refrigerant obtained by mixing one or two or more kinds of a group of the hydrofluorocarbon refrigerant by forming a sliding bearing out of a member including lead, and using the ether oil having compatibility with the refrigerant as a lubricating oil. SOLUTION: In a sealed scroll compressor, an electric motor 3 for driving a compressor mechanism 2 of an upper part is housed in a lower part inside a sealed container 1, and a driving shaft 5 is connected to a rotor 4. The driving shaft 5 is supported on main bearing members 9a, 9b provided in a frame member 8 freely to be rotated, but in this case, as a main bearing member 9b, a sliding bearing made of a material containing lead having an excellent sliding characteristic is used. A turning bearing member 10 for supporting the driving shaft 5 in a back surface of a turning scroll 6 of the compressor mechanism 2 is made of a material containing lead. As a refrigerating machine oil (lubricating oil) to be stored in a lower part of the sealed container 1, the ether oil having compatibility with the hydrofluorocarbon refrigerant is used. |
