| 摘要 |
cooling equipment. SUBSTANCE: cooling machine of combined system with nitrogen cooling comes in the form of Stirling machine. Closed circuit of re-condensation of vapors of liquid nitrogen houses nitrogen vessel, evaporator, intermediate heat exchanger, expansion turbine, expansion vessel, refrigerating machine, Dewar flask, high-pressure pump and check valve placed in series. Tap connects gas part of nitrogen vessel with intermediate heat exchanger and evaporator. Closed working circuit of gaseous nitrogen incorporates cooled heat-insulated space housing nitrogen distribution and collection system and compressor. Compressor is coupled to expansion turbine via clutch. Refrigerating machine can be driven by electric motor, separate thermal engine or engine of vehicle. EFFECT: provision for thermostating of various objects with high level of explosion and fire risk, for fast cooling and long-term storage of food products and other materials in nitrogen atmosphere.
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