Refrigeration – Processes – Treating an article
Patent
1985-11-12
1987-12-29
King, Lloyd L.
Refrigeration
Processes
Treating an article
62373, F25D 1702
Patent
active
047151897
ABSTRACT:
Apparatus and a method are disclosed for cooling a low temperature circuit substrate without the need for a vacuum chamber or total immersion, involving subjecting the circuit to a stream of cold fluid, such as liquid helium, and allowing the fluid thereafter to dissipate into the surrounding environment. The apparatus may include an enclosure for holding the circuit, and means for guiding the fluid onto another portion of the substrate after it strikes the circuit. The exit path for the fluid may fold back past the circuit so as to help convect out heat which enters the vicinity radially from the outside. The circuit may also be cooled indirectly by directing the stream of cold fluid through a thermally conductive block, the block having a small surface thermally connectable to the circuit. Additionally, radiation shields may be placed at desired locations in the apparatus and can be cooled by the waste fluid after it cools the circuit.
REFERENCES:
patent: 1769087 (1930-07-01), Vucassovich
patent: 2261808 (1941-11-01), Morris
patent: 2470245 (1949-05-01), Green
patent: 2988898 (1961-06-01), Hesson et al.
patent: 3079504 (1963-02-01), Hutchens
patent: 3083547 (1963-04-01), Stevens et al.
patent: 3431749 (1969-03-01), Bounds et al.
patent: 3894403 (1975-07-01), Longsworth
patent: 4498046 (1985-02-01), Faris
P. Wolf, "Picosecond Sampling with Josephson Junctions," in Picosecond Electronics and Optoelectronics (ed. Mourou et al.), pp. 236-243, at 241 (1985).
Hamilton, "High-Speed, Low-Crosstalk Chip Holder for Josephson Integrated Circuits," IEEE Trans. on Instrumentation and Measurement, vol. IM-31, pp. 129-131 (1982).
Hamilton, "Analog Measurement Applications for High-Speed Josephson Switches," IEEE Trans. on Magnetics, vol. MAG-17 (1/81), pp. 577-582.
Air Products & Chemicals, Inc., "Model LT-3-110 Liquid Transfer Heli-Tran Refrigerators--Operating Manual."
Hypres, Inc.
King Lloyd L.
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