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

Claim 10:
11. The cooling device according to claim 10, wherein the bottom part of the additional evaporator is connected to the evaporating unit by the third fluid line, wherein the top part of the additional evaporator is connected to the compressor by the fourth fluid line, the cooling circuit further comprising an oil release line, which connects the bottom part of the additional evaporator with the fourth fluid line, wherein the oil release line comprises a flow restricting element or oil release valve, which is adapted to close the oil release line and to retain lubricant oil in the bottom part of the additional evaporator, and to open the oil release line, wherein lubricant oil is adapted to flow from the bottom part of the additional evaporator through the oil release line into the fourth fluid line.