Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Including specific material of construction
Patent
1978-06-15
1980-11-25
Scovronek, Joseph
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Including specific material of construction
156617SP, C30B 1510, C30B 1514, C30B 1530
Patent
active
042358485
ABSTRACT:
The invention relates to growing single crystals from melt. The disclosed apparatus includes a sealed chamber accommodating a crucible with the melt, the crucible being operatively connected with a drive effecting its rotation, a heater with thermal insulation means enclosing the crucible and a rod arranged coaxially with the crucible and carrying a seed holder, the rod being operatively connected with its own drive effecting its rotation and vertical displacement. In accordance with the invention, the operative connection between the crucible and its drive includes a support ring accommodated in the chamber and supporting thereon the crucible for their joint rotation during the crystal-pulling operation. The invention provides for obstruction-free supply of heat from the heater to the entire crucible surface, precludes the undesirable reduction of the temperature from the periphery of the crucible toward the center of its bottom and provides prerequisites for maintaining and desired heat distribution field within the melt.
REFERENCES:
patent: 2686212 (1954-08-01), Horn et al.
patent: 2822308 (1958-02-01), Hall
patent: 3338678 (1967-08-01), Weiser et al.
patent: 3359077 (1967-12-01), Arst
patent: 3637439 (1972-01-01), DeBie
patent: 3865554 (1975-02-01), Wenckus et al.
patent: 3953281 (1976-04-01), Pantusco et al.
Apilat Vitaly Y.
Eidelman Lev G.
Goriletsky Valentin I.
Kirichenko Anatoly I.
Makarenko Grigory G.
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