Displacer apparatus of a split stirling cooler

Details Displacer apparatus of a split stirling cooler Displacer apparatus of a split stirling cooler

1993-08-02

1994-11-29

Capossela, Ronald C.

Refrigeration

Gas compression, heat regeneration and expansion, e.g.,...

60520, F25B 900

Patent

active

053678800

ABSTRACT:
There is disclosed a Stirling cooler comprising a compressor and a displacer apparatus. To prevent undesirable displacement of a displacer due to leakage of working fluid, the displacer apparatus of the present invention comprises a step portion provided at a lower end of a cylinder and formed with a through hole extending through it to permit work and buffer spaces to be in communication with each other and an actuating hole intersecting the through hole; a centering rod having a through hole formed therein and movably placed in the actuating hole of the step portion; a spring disposed rearwardly of the centering rod to apply a biasing force to the centering rod; and a displacer rod connected to the displacer and having a recess which is formed in an outer periphery of the rod and with which a forward tip of the centering rod is brought into contact.

REFERENCES:
patent: 3834172 (1974-09-01), Dehne
patent: 3937018 (1976-02-01), Beale
patent: 4397156 (1983-08-01), Heisig et al.
patent: 4708725 (1987-11-01), Okumura
patent: 5003777 (1991-04-01), Berchowitz

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