Tube furnace

Patent · Tue Jan 01 00:00:00 EST 1991

OSTI ID:868088

Foster, Kenneth G ^[1]; Frohwein, Eugene J ^[2]; Taylor, Robert W ^[1]; Bowen, David W ^[1]

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1. Livermore, CA
2. San Ramon, CA

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.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: United States Department of Energy (Washington, DC)
• Patent Number(s): US 5072094
• OSTI ID: 868088
• Country of Publication: United States
• Language: English

Related Subjects

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
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