초록 ▼

A cryogenic refrigerator is disclosed having a displacer with a regenerator therein. The regenerator opens at one end to a warm volume and at the other end to a cold volume. The opening at the cold volume includes an end hole and a plurality of radial holes. The radial holes serve as secondary passa

A cryogenic refrigerator is disclosed having a displacer with a regenerator therein. The regenerator opens at one end to a warm volume and at the other end to a cold volume. The opening at the cold volume includes an end hole and a plurality of radial holes. The radial holes serve as secondary passageways should the end hole become blocked with contaminants. The life of the cryogenic refrigerator is thereby greatly enchanced.

대표청구항 ▼

A cryogenic refrigerator comprising: a tubular member having a cold end; a substantially cylindrical displacer reciprocally mounted within said tubular member and separating said tubular member into a cold volume at said cold end and a warm volume at the other end of said tubular member; said displa

A cryogenic refrigerator comprising: a tubular member having a cold end; a substantially cylindrical displacer reciprocally mounted within said tubular member and separating said tubular member into a cold volume at said cold end and a warm volume at the other end of said tubular member; said displacer defining a regeneration chamber therein in fluid communication between said warm volume and said cold volume, and further defining a hole in its end facing said cold end and a plurality of radially extending holes in its lateral surface a short distance from said end; and pressure response means for alternately urging said displacer toward the cold and the warm ends of said cylinder.