Direct condenser defrosting system

Details Direct condenser defrosting system Direct condenser defrosting system

1977-11-04

1979-08-07

Padgett, Benjamin R.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34 92, F26B 506

Patent

active

041633270

ABSTRACT:
An improved defrosting means for a condenser in a freeze drying apparatus including a thermocouple for monitoring the condenser temperature during a freeze drying cycle, and an electric cartridge heater for defrosting the condenser after the freeze drying process, both of which are insertable into the structure of the condenser. The cartridge heater, in association with a highly-conductive woven mesh disposed in the interior of the condenser, provides for a uniform distribution of thermal energy throughout the condenser to quickly and efficiently cause layers of ice and frost on the outer surfaces of the condenser to break up and drop away.

REFERENCES:
patent: 2687626 (1954-08-01), Bartlowe
patent: 2726515 (1955-12-01), Kleist
patent: 2758150 (1956-08-01), Zargarpur
patent: 2777300 (1957-01-01), Palmer
patent: 2819858 (1958-01-01), Mittendorf
patent: 3029610 (1962-04-01), Armentrout
patent: 3195320 (1965-07-01), Kita
patent: 3247600 (1966-04-01), Togashi et al.
patent: 3909957 (1975-10-01), Passey
patent: 4081914 (1978-04-01), Rautenbach

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