Thermal filter

Details Thermal filter Thermal filter

1981-12-28

1984-10-30

Capossela, Ronald C.

Refrigeration

Refrigeration producer

Evaporator, e.g., heat exchanger

165185, 428450, 428460, 428461, F25B 1900

Patent

active

044793677

ABSTRACT:
The rate of temperature change of an infrared detector produced by a cooling source in a typical Joule-Thomson cryostat (or other cooling device such as closed cycle cooler) is reduced by interposing a thermal filter between the detector and cooling source. The thermal filter comprises at least two layers of a first material having a good heat conductivity and high heat capacity, such as copper, separated by a layer of a second material having a high thermal resistance, such as an adhesive, e.g., a silicone rubber. The thermal filter of the invention is a thermal analog of an electrical filter which smooths out voltage or current oscillations.

REFERENCES:
patent: 3410110 (1968-11-01), Hoyes
patent: 3654377 (1972-04-01), Fleming et al.
patent: 3711365 (1973-01-01), Pyle
patent: 3812002 (1974-05-01), Lurie
patent: 3813315 (1974-05-01), Valyi
patent: 3851173 (1974-11-01), Taylor et al.
patent: 3967042 (1976-06-01), Laskin et al.
patent: 4118947 (1978-10-01), Diedrich et al.
patent: 4189524 (1980-02-01), Lazzari
patent: 4194119 (1980-03-01), MacKenzie
patent: 4324104 (1982-04-01), Horn et al.

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