Gas refrigerating machine, method for operating a gas refrigerating machine and method for manufacturing a gas refrigerating machine having a housing

A method for operating a gas refrigerating machine comprising:

• an input for gas to be cooled;
• a recuperator;
• a compressor comprising a compressor input, the compressor input coupled to a first recuperator output;
• a heat exchanger;
• a turbine;
• a housing and a gas output in a wall of the housing, comprising:
• sucking gas to be cooled through the input in the wall of the housing;
• and
• outputting cooled gas through the gas output in the wall of the housing, wherein the recuperator, the compressor, the turbine and the heat exchanger are located in the housing,
• wherein the gas refrigerating machine is formed as an open system, wherein the input for the gas to be cooled is located in a region to be cooled and the gas output is located in the region to be cooled to suck warm gas from the region to be cooled via the input for the gas to be cooled and to discharge cold gas into the region to be cooled via the gas output, and
• wherein the housing comprises an elongated shape, the input for the gas to be cooled comprises a plurality of perforations in an upper portion with respect to an operating direction of the gas refrigerating machine of the housing or a wall of the recuperator, and the gas output comprises an opening in a lower region of the housing with an opening area which is at least 50% of a cross-sectional area of the housing in the upper region, or
• wherein the recuperator comprises interconnected first gas channels from a first recuperator input to the first recuperator output and comprises second interconnected gas channels between a second recuperator input and a second recuperator output, and wherein the first gas channels and the second gas channels are arranged in thermal interaction, the recuperator comprising, at the second recuperator input, a first collection region connecting the second gas channels on one side and extending along the inner region and forming the second recuperator input, and a second collection region connecting the second gas channels on another side and extending along an edge portion of the outer region and forming the second recuperator output, wherein an intake wall delimits the first collection region and separates the first collection region from a suction region, or
• wherein the turbine input is connected to a second recuperator output via a connection region, the connection region extending around the heat exchanger, or
• wherein the recuperator comprises a volume which completely encloses a suction region, the suction region and the volume extending by a distance greater than 10 cm away from the compressor input, and wherein the input for the gas to be cooled is formed by first ends of first gas channels, wherein second ends of the first gas channels open into the suction region, and wherein the first gas channels are distributed throughout the volume to direct gas into the suction region from multiple sides.

A method for manufacturing a gas refrigerating machine comprising:

• an input for gas to be cooled;
• a recuperator;
• a compressor comprising a compressor input, the compressor input coupled to a first recuperator output;
• a heat exchanger coupled;
• a turbine;
• a housing and a gas output in a wall of the housing, comprising:
• arranging the recuperator, the compressor, the turbine and the heat exchanger in the housing in the wall of which the input for the gas to be cooled is located and in the wall of which the gas output is located,
• wherein the gas refrigerating machine is formed as an open system, wherein the input for the gas to be cooled is located in a region to be cooled and the gas output is located in the region to be cooled to suck warm gas from the region to be cooled via the input for the gas to be cooled and to discharge cold gas into the region to be cooled via the gas output, and
• wherein the housing comprises an elongated shape, the input for the gas to be cooled comprises a plurality of perforations in an upper portion with respect to an operating direction of the gas refrigerating machine of the housing or a wall of the recuperator, and the gas output comprises an opening in a lower region of the housing with an opening area which is at least 50% of a cross-sectional area of the housing in the upper region, or
• wherein the recuperator comprises interconnected first gas channels from a first recuperator input to the first recuperator output and comprises second interconnected gas channels between a second recuperator input and a second recuperator output, and wherein the first gas channels and the second gas channels are arranged in thermal interaction, the recuperator comprising, at the second recuperator input, a first collection region connecting the second gas channels on one side and extending along the inner region and forming the second recuperator input, and a second collection region connecting the second gas channels on another side and extending along an edge portion of the outer region and forming the second recuperator output, wherein an intake wall delimits the first collection region and separates the first collection region from a suction region, or
• wherein the turbine input is connected to a second recuperator output via a connection region, the connection region extending around the heat exchanger, or
• wherein the recuperator comprises a volume which completely encloses a suction region, the suction region and the volume of the recuperator extending by a distance greater than 10 cm away from the compressor input, and wherein the input for the gas to be cooled is formed by first ends of first gas channels, wherein second ends of the first gas channels open into the suction region, and wherein the first gas channels are distributed throughout the volume to direct gas into the suction region from multiple sides.