Patent ID: 11959684
Assignee: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 16:
17. A method for cooling by using a cooling circuit of a cooling device, comprising:
closing of a first fluid by-pass line of the cooling circuit by a first by-pass valve when the cooling device is in an active cooling mode, wherein the cooling circuit comprises a compressor, a condensing unit connected to the compressor by a first fluid line of the cooling circuit, an evaporating unit connected to the condensing unit by a second fluid line of the cooling circuit, an expansion device arranged in the second fluid line, an additional evaporator connected to the evaporating unit by a third fluid line of the cooling circuit, and connected to the compressor by a fourth fluid line of the cooling circuit, the first fluid by-pass line connecting the condensing unit with the evaporating unit, and a second fluid by-pass line connecting the evaporating unit with the condensing unit, wherein the first fluid by-pass line comprises the first by-pass valve, and wherein the second fluid by-pass line comprises a second by-pass valve;
closing of the second fluid by-pass line in the active cooling mode by the second by-pass valve,
compressing cooling agent present in the cooling circuit in the active cooling mode by the compressor, wherein the compressed cooling agent contains lubricant oil from the compressor, and
transferring at least a portion of the lubricant oil from the compressor through the condensing unit, through the expansion device, through the evaporating unit, through the additional evaporator and through the fourth fluid line back to the compressor in the active cooling mode.