Sealed refrigerant compressor and refrigeration device including same

Abstract

A sealed refrigerant compressor (100) includes: a compression element (107) accommodated in a sealed container (101) and configured to compress a refrigerant; and an electric element (106) configured to drive the compression element (107). Lubricating oil (103) is stored in the sealed container (101). The lubricating oil (103) is mixed oil constituted by at least mineral oil and synthetic oil. Kinetic viscosity of the lubricating oil (103) at 40° C. falls within a range of 0.1 to 5.1 mm2/s, and a flash point of the lubricating oil (103) is 110° C. or more.

1 . A sealed refrigerant compressor comprising:
 a compression element accommodated in a sealed container and configured to compress a refrigerant; and   an electric element configured to drive the compression element, wherein:   lubricating oil is stored in the sealed container;   the lubricating oil is mixed oil constituted by at least mineral oil and synthetic oil;   kinetic viscosity of the lubricating oil at 40° C. falls within a range of 0.1 to 5.1 mm 2 /s; and   a flash point of the lubricating oil is 110° C. or more.   
     
     
         2 . The sealed refrigerant compressor according to  claim 1 , wherein a content of the synthetic oil in the lubricating oil falls within a range of 0.1 to 40.0 wt. % of an entire amount of the lubricating oil. 
     
     
         3 . The sealed refrigerant compressor according to  claim 1 , wherein the synthetic oil is at least one selected from the group consisting of ester oil, ether oil, polyalkylene glycol oil, and alkyl benzene oil. 
     
     
         4 . The sealed refrigerant compressor according to  claim 1 , wherein at least one of additives that are an extreme pressure additive, an oily agent, an antifoaming agent, and a stabilizing agent is added to the lubricating oil. 
     
     
         5 . The sealed refrigerant compressor according to  claim 4 , wherein a content of the additive falls within a range of 0.1 to 4.0 wt. % of the entire amount of the lubricating oil. 
     
     
         6 . The sealed refrigerant compressor according to  claim 1 , wherein the lubricating oil has a distillation property in which a distillation range is 200 to 400° C. 
     
     
         7 . A refrigeration device comprising the sealed refrigerant compressor according to  claim 1 .