Cryogenic refrigerator adapted to miniaturization

Abstract

Abstract THE STRUCTURE IS A CRYOGENIC REFRIGERATOR PRODUCING A LOW-LEVEL TEMPERATURE BY CLOSED CYCLE CIRCULATION OF A CRYOGENIC FLUID. A TOTALLY SEALED HOUSING IS PROVIDED WHICH DEFINES A HOT CYLINDER, COLD CYLINDER, AND CRANKCASE CHAMBER, THE LATTER HAVING A CRANKSHAFT ROTATABLY MOUNTED THEREIN AND DIRECTLY CONNECTED TO DISPLACERS IN THE COLD AND HOT CYLINDERS. THE CRANKCASE CHAMBER WHICH COMMUNICATES DIRECTLY WITH THE COLD AND HOT CYLINDERS SERVES AS A RESERVOIR THROUGH WHICH THE CROGENIC FLUID IS CYCLED DURING REFRIGERATOR OPERATION. THE DIRECT ROD CONNECTIONS CRANKSHAFT TO DISPLACERS, ELIMINATE THE NEED FOR CYLINDERDEFINING WALLS AND THE RELATED SEALS AND BEARING GUIDE ARRANGEMENTS. MOTIVE POWER IS PROVIDED BY STATOR WINDINGS EXTERNALLY OF THE SEALED HOUSING WHICH OPERATIVELY COOPERATE WITH A ROTOR JOURNALLED INTERNAL OF THE HOUSING AND ASSOCIATED WITH THE CRANKSHAFT.

Inventors

No inventors recorded.

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