Patent ID: 11959676
Assignee: DANFOSS A/S
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 17:
18. A method for controlling a vapour compression system comprising a compressor unit comprising one or more compressors, a heat rejecting heat exchanger, a receiver, an expansion device and an evaporator arranged in a refrigerant path, the expansion device being arranged to control a supply of refrigerant to the evaporator, the method comprising the steps of:
obtaining a pressure value indicating a pressure prevailing inside the receiver,
comparing the obtained pressure value to a first threshold pressure value, and
in the case that the obtained pressure value is below the first threshold pressure value, controlling the compressor(s) of the compressor unit in order to reduce a suction pressure of the vapour compression system;, wherein the compressor unit comprises at least one main compressor being fluidly connected to an outlet of the evaporator and at least one receiver compressor being fluidly connected to a gaseous outlet of the receiver, and wherein the method further comprises the step of controlling the at least one receiver compressor based on the obtained pressure value.