Tube furnace
Abstract
A vermiculite insulated tube furnace is heated by a helically-wound resistance wire positioned within a helical groove on the surface of a ceramic cylinder, that in turn is surroundingly disposed about a doubly slotted stainless steel cylindrical liner. For uniform heating, the pitch of the helix is of shorter length over the two end portions of the ceramic cylinder. The furnace is of large volume, provides uniform temperature, offers an extremely precise programmed heating capability, features very rapid cool-down, and has a modest electrical power requirement.
- Inventors:
-
- Livermore, CA
- San Ramon, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 868088
- Patent Number(s):
- 5072094
- Assignee:
- United States Department of Energy (Washington, DC)
- Patent Classifications (CPCs):
-
F - MECHANICAL ENGINEERING F27 - FURNACES F27B - FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL
F - MECHANICAL ENGINEERING F27 - FURNACES F27D - DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- tube; furnace; vermiculite; insulated; heated; helically-wound; resistance; wire; positioned; helical; groove; surface; ceramic; cylinder; surroundingly; disposed; doubly; slotted; stainless; steel; cylindrical; liner; uniform; heating; pitch; helix; shorter; length; portions; volume; provides; temperature; offers; extremely; precise; programmed; capability; features; rapid; cool-down; modest; electrical; power; requirement; provides uniform; uniform heating; electrical power; stainless steel; uniform temperature; shorter length; ceramic cylinder; resistance wire; tube furnace; wire positioned; surroundingly disposed; uniform heat; power requirement; cylindrical liner; /219/
Citation Formats
Foster, Kenneth G, Frohwein, Eugene J, Taylor, Robert W, and Bowen, David W. Tube furnace. United States: N. p., 1991.
Web.
Foster, Kenneth G, Frohwein, Eugene J, Taylor, Robert W, & Bowen, David W. Tube furnace. United States.
Foster, Kenneth G, Frohwein, Eugene J, Taylor, Robert W, and Bowen, David W. Tue .
"Tube furnace". United States. https://www.osti.gov/servlets/purl/868088.
@article{osti_868088,
title = {Tube furnace},
author = {Foster, Kenneth G and Frohwein, Eugene J and Taylor, Robert W and Bowen, David W},
abstractNote = {A vermiculite insulated tube furnace is heated by a helically-wound resistance wire positioned within a helical groove on the surface of a ceramic cylinder, that in turn is surroundingly disposed about a doubly slotted stainless steel cylindrical liner. For uniform heating, the pitch of the helix is of shorter length over the two end portions of the ceramic cylinder. The furnace is of large volume, provides uniform temperature, offers an extremely precise programmed heating capability, features very rapid cool-down, and has a modest electrical power requirement.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1991},
month = {Tue Jan 01 00:00:00 EST 1991}
}
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