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US 10,520,226 B2Granted
Cryocooler
AssigneeSumitomo Heavy Industries, Ltd.
InventorTakaaki Morie
Life of this patent
Estimating the term…
Abstract
A cryocooler include a pressure control valve, a valve housing which accommodates the pressure control valve, a motor which includes a motor output shaft, a reduction mechanism which connects the motor output shaft to the pressure control valve in a power transmittable manner, and a magnetic shield case which encloses the motor and is hermetically connected to the valve housing. The motor may include a motor case from which the motor output shaft protrudes. The magnetic shield case may enclose the motor outside the motor case.
Claims6
A cryocooler comprising:
- a pressure control valve;
- a valve housing which accommodates the pressure control valve;
- an electromagnetic motor which includes a motor case and a motor output shaft which protrudes from the motor case;
- a reduction mechanism which connects the motor output shaft to the pressure control valve in a power transmittable manner;
- a speed reducer case which accommodates the reduction mechanism and is hermetically connected to the valve housing;
- and
- a magnetic shield case which encloses the electromagnetic motor outside the motor case and is hermetically connected to the speed reducer case,
- wherein at least one of the valve housing, speed reducer case, and the magnetic shield case communicates with an intake port of a compressor such that the reduction mechanism is exposed to a low pressure refrigerant gas.
5 more elements
A cryocooler comprising:
- a pressure control valve;
- a valve housing which accommodates the pressure control valve;
- an electromagnetic motor which includes a motor case and a motor output shaft which protrudes from the motor case;
- a reduction mechanism which connects the motor output shaft to the pressure control valve in a power transmittable manner;
- and
- a magnetic shield case which encloses the electromagnetic motor outside the motor case and is hermetically connected to the valve housing,
- wherein the reduction mechanism is accommodated in the valve housing.
4 more elements
A cryocooler comprising:
- a pressure control valve;
- a valve housing which accommodates the pressure control valve;
- an electromagnetic motor which includes a motor output shaft;
- a reduction mechanism which connects the motor output shaft to the pressure control valve in a power transmittable manner;
- a speed reducer case which accommodates the reduction mechanism and is hermetically connected to the valve housing;
- and
- a magnetic shield case which encloses the electromagnetic motor and is hermetically connected to the speed reducer case,
- wherein at least one of the valve housing, speed reducer case, and the magnetic shield case communicates with an intake port of a compressor such that the reduction mechanism is exposed to a low pressure refrigerant gas.
5 more elements
Dependencies are inferred from the claim text.