US Patent 11287087 Device and process for refueling containers with pressurized gas

A device and process for refuelling containers with pressurized gas comprising a pressurized gas source, a transfer circuit comprising one upstream end, the device comprising a refrigeration system for cooling the gas flowing from the gas source prior to its entering into the container, the refrigeration system comprising a refrigerant cooling loop circuit comprising, arranged in series, a compressor, a condenser section, an expansion valve and an evaporator section, the refrigeration system comprising a cold source in heat exchange with the condenser section and a heat exchanger located in the transfer circuit and comprising a heat exchange section between the gas flowing in the transfer circuit and the evaporator section, the refrigerant cooling loop circuit comprising a bypass conduit comprising an upstream end connected to the outlet of the compressor and a downstream end connected to the refrigerant cooling loop circuit upstream the compressor inlet and bypassing the condenser section and expansion valve, the device comprising a bypass regulating valve for controlling the flow of refrigerant flowing into the by-pass conduit.