US 11,098,931 B2 · Pulse tube refrigerating machine

Abstract

A pulse tube refrigerating machine enables maintenance of an orifice while circulation of refrigerant gas within individual components is allowed, thus reducing the time required for maintenance. A compressor delivers a refrigerant gas having a high pressure and sucks the refrigerant gas having a low pressure. A cold head including a regenerator tube through which the refrigerant gas circulates and a pulse tube is connected to a housing. The flow of the refrigerant gas is controlled by one or more orifices, which are disposed outside the housing. The compressor, the housing, and the orifices are coupled via tubing. A coupling unit is disposed at both ends of at least one of the orifices. The coupling unit has a structure such that it can be split while the refrigerant gas is retained within the tubing. When the coupling unit is split, a detachable unit portion including the orifice is isolated.

Claims17

Dependent claims

A pulse tube refrigerating machine comprising:

a valve unit configured to receive a working fluid from an exhaust of a compressor and to output the working fluid to an intake of the compressor, a flow path of the working fluid from the valve unit to a cold head permits a flow of the working fluid between the cold head and the valve unit;
a first coupling unit configured to sever the flow path of the working fluid from the valve unit to the cold head in a manner that permits a decoupling of the valve unit from the cold head, the decoupling of the valve unit from the cold head disconnects the cold head from the valve unit;
and
an orifice configured to control the flow of the working fluid between the cold head and the valve unit, the orifice is attached to the valve unit before the decoupling of the valve unit from the cold head in a manner that permits the orifice to remain attached to the valve unit after the decoupling of the valve unit from the cold head.

1 more element

Dependencies are inferred from the claim text.

Pulse tube refrigerating machine

Life of this patent

Pulse tube refrigerating machine

Life of this patent

Abstract

Claims17