DEVICE FOR CRYOGENIC COOLING BY OPEN FLOW OF EVAPORATED REFRIGERANT Russian patent published in 2004 - IPC

Abstract RU 2226657 C2

FIELD: cryogenic cooling of specimen by open flow of evaporated refrigerant. SUBSTANCE: device has cryostat, nozzle, Dewar flask, and system for separate delivery of liquid and gaseous refrigerants from Dewar flask to cryostat. Nozzle emerges from cryostat and organizes coaxially disposed cold (inner) and hot (outer) gas flows. Delivery system is provided with electric heater for evaporating liquid refrigerant accommodated in Dewar flask, gaseous refrigerant sensor, and valve that functions to control gaseous refrigerant delivery to cryostat and is connected to temperature control unit. EFFECT: simplified design, reduced cost and minimal attainable cooling temperature of specimen. 1 cl, 1 dwg

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RU 2 226 657 C2

Authors

Demikhov E.I.

Tuflin Ju.A.

Karzhavin V.A.

Dates

2004-04-10—Published

2002-03-29—Filed