Patent ID: 11965681
Assignee: CARRIER CORPORATION
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A refrigeration system, comprising:
a compressor, a condenser, an evaporator, and a lubrication circuit, the lubrication circuit comprising a post-lubrication flow path connected from the compressor into the condenser and the evaporator respectively, wherein the lubrication circuit is distinct from a refrigeration circuit of the refrigeration system; and
a pre-lubrication flow path connected from the condenser and the evaporator into the compressor respectively;
wherein the pre-lubrication flow path comprises a first branch connected to the condenser and a second branch connected to the evaporator respectively; and the post-lubrication flow path comprises a third branch connected to the condenser and a fourth branch connected to the evaporator, respectively;
the pre-lubrication flow path and the post-lubrication flow path are configured such that:
after flowing from the condenser via the first branch to the compressor for lubrication, a part of refrigerant for lubrication can flow back to the evaporator via the fourth branch;
and after flowing from the evaporator via the second branch to the compressor for lubrication, the part of refrigerant for lubrication can flow back to the condenser via the third branch.