초록 ▼

A pulse tube refrigerator is equipped with a constant-diameter inertance tube (41) or a stepped or tapered intertance tube (48) which is coiled in a reservoir (20) to protect it from damage from external impacts and from structural failure due to differences between external and internal pressures.

A pulse tube refrigerator is equipped with a constant-diameter inertance tube (41) or a stepped or tapered intertance tube (48) which is coiled in a reservoir (20) to protect it from damage from external impacts and from structural failure due to differences between external and internal pressures. A tapered inertance tube (48) improves thermodynamic performance of the pulse tube refrigerator by improving heat transfer at the warm end of pulse tube (10).

대표청구항 ▼

[ I claim:] [1.] In a pulse tube refrigerator equipped with a reservoir and an inertance tube, said inertance tube having first and second ends, said first end of said inertance tube communicating with the warm end of the pulse tube of said pulse tube refrigerator and said second end of said inertan

[ I claim:] [1.] In a pulse tube refrigerator equipped with a reservoir and an inertance tube, said inertance tube having first and second ends, said first end of said inertance tube communicating with the warm end of the pulse tube of said pulse tube refrigerator and said second end of said inertance tube communicating with said reservoir, an improvement comprising a bore of varying cross section in said inertance tube wherein the internal diameter of said bore is greater at said first end of said inertance tube than the internal diameter of said bore at said second end of said inertance tube.