Secondary pump unit

Details Secondary pump unit Secondary pump unit

1996-10-03

1998-02-24

Capossela, Ronald C.

Refrigeration

Low pressure cold trap process and apparatus

417901, B01D 800

Patent

active

057201749

ABSTRACT:
A secondary pump unit comprising a mechanical secondary pump and a cryogenic trap, wherein the cryogenic trap forms a ring surrounding the outside of the mechanical secondary pump at its intake end, and the trap is enclosed in a casing defining, in parallel, the intake opening of the mechanical pump and of the cryogenic trap.

REFERENCES:
patent: 4815303 (1989-03-01), Duza
patent: 5062271 (1991-11-01), Okumura et al.
patent: 5335505 (1994-08-01), Ohtani et al.
patent: 5483803 (1996-01-01), Matte et al.
patent: 5548964 (1996-08-01), Jinbo et al.
Ravex et al, "Experimental Study and Modelisation of a Pulse Tube Refrigerator", Cryogenics, vol. 32, 1 Jan. 1992, pp. 9-12.

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