Anchored coil heater

Details Anchored coil heater Anchored coil heater

1977-01-19

1978-05-23

Albritton, C. L.

Electrical resistors

Zigzag or sinuous resistance element

Helical

13 25, 219347, 219553, 338311, H01C 310

Patent

active

040913554

ABSTRACT:
A high temperature coil heater which is supported throughout its length in a manner to achieve substantial exposure of the coil to the product. A helically wound coil of resistance wire is supported continuously along its length by an anchor of electrically insulative high strength high thermal conductivity material and which in turn is bonded to a support member of electrically insulative low thermal conductivity low density material. The anchor embeds only a small segment of each coil turn and a major segment of the coil turns is disposed above the support member for efficient direct radiation to the product. Undesirable heat flow rearward of the coil is restricted by the low conductivity support member.

REFERENCES:
patent: 733610 (1903-07-01), Yates
patent: 848954 (1907-04-01), Barringer
patent: 1490767 (1924-04-01), Curtis
patent: 1644255 (1927-10-01), Kercher et al.
patent: 2051637 (1936-08-01), Goldbert et al.
patent: 2091905 (1937-08-01), Bensel et al.
patent: 3612829 (1971-10-01), Evans et al.

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