Wind tunnel freezer

Details Wind tunnel freezer Wind tunnel freezer

1979-03-13

1980-10-14

Capossela, Ronald C.

Refrigeration

Automatic control

Refrigeration producer

62381, F25B 4104

Patent

active

042273811

ABSTRACT:
A batch freezing apparatus has a fan or blower to continuously circulate air through the freezing chamber and back again through a recycle conduit. A cold gas such as from a liquid nitrogen supply tank is added to the recirculating air to lower the temperature in the system in a controlled manner to provide rapid freezing. The freezing chamber is capable of rotation so the material being frozen in cylinderical containers can be rotated against and freeze upon the inner surface of the container during the freezing process. The apparatus is especially suitable for freezing bull semen.

REFERENCES:
patent: 2327041 (1943-08-01), Hill et al.
patent: 2831329 (1958-04-01), Morrison
patent: 3024117 (1962-03-01), Barlow
patent: 3238736 (1966-03-01), MacIntosh
patent: 3304732 (1967-02-01), Rubin
patent: 3461680 (1969-08-01), Rische
patent: 3700220 (1972-10-01), Talago
patent: 3714793 (1973-02-01), Eigenbrod
patent: 3963416 (1976-06-01), Mach
patent: 4033142 (1977-07-01), Schoesch et al.
patent: 4072026 (1978-02-01), Oberpriller et al.
Linde BF-4 Biological Freezing System, Union Carbide Cryogenic Products.

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