Refrigeration – Compartment access or use and air blocking – Including article conveyer or transporter
Patent
1994-11-02
1996-05-21
Tapolcai, William E.
Refrigeration
Compartment access or use and air blocking
Including article conveyer or transporter
62380, F25D 2504
Patent
active
055178278
ABSTRACT:
The present invention is a tunnel freezer which incorporates a "dual flow" design whereby the refrigerant is introduced at each end of the tunnel and withdrawn from the middle of the tunnel. A key to the present invention is that the dual flow design allows one to confine the pressure gradient for leaks between the ends of the tunnel where it will not be a concern since the item entrance and exit ports (which ports provide a ready access for leaks) are located at the ends of the tunnel.
REFERENCES:
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patent: 3728869 (1973-04-01), Schmidt
patent: 4157650 (1979-06-01), Guibert
patent: 4237695 (1980-12-01), Oberpriller et al.
patent: 4800728 (1989-01-01), Klee
patent: 5123261 (1992-06-01), Cope
patent: 5267449 (1993-12-01), Kiczek et al.
Cohen Joseph P.
Kiczek Edward F.
Klee David J.
Shaw Robert J.
Air Products and Chemicals Inc.
Tapolcai William E.
Wolff Robert J.
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