Oven that exhibits both self-resistive and self-inductive heating
AssigneeDynamic Systems Inc.
InventorHugo S. Ferguson
Life of this patent
Estimating the term…
Abstract
An oven (1800) for use in conjunction with a dynamic thermal-mechanical testing system that exhibits both self-resistive and self-inductive heating whenever a sufficiently large alternating (AC) electrical current is passed through the oven. In one embodiment, the oven is fabricated from a material which undergoes self-resistive heating to radiantly heat an internal volume of the oven. The oven also includes appropriately shaped heating sections (1830), which undergoes self-resistive and self-inductive heating to compensate for heat losses into a support for the oven.
Claims18
An oven for providing controlled heating, wherein said heating occurs in response to an alternating current flowing through the oven, said oven comprising:
- a plurality of sides, each having a mid-span region which collectively form a cavity centrally located between opposing ends of the oven, each of said sides contain a conductive material capable of being self-resistively heated and having eddy current flow induced therein;
- and
- a heating section formed in each of said sides at a location intermediate said mid-span region and at least one of said ends, wherein said heating section has a pre-defined shape and size such that said section undergoes self-induction in response to flow of the alternating current through each of said sides and generates both self-inductive and self-resistive heat therein which, in conjunction with self-resistive heat generated in the mid-span region of each of said sides by said current, establishes a pre-defined temperature within said cavity.
A method of heating an oven that is formed of a conductive material capable of being self-resistively heated and having eddy current flow induced therein and having a plurality of sides, each having a mid-span region which collectively define a cavity centrally located between opposing ends of the oven and a heating section formed in the sides at a location intermediate said mid-span region and at least one of said ends, wherein said heating section has a pre-defined shape and size such that said section undergoes self-induction in response to flow of the alternating current through each of said sides and generates both self-inductive and self-resistive heat therein, said method comprising the steps of:
- controllably passing alternating current through said heating sections so as to generate self-inductive and self-resistive heat within said oven which, in conjunction with self-resistive heat generated in the mid-span region of each of said sides by said current;
- and
- producing a pre-defined temperature within said cavity to controllably heat a specimen contained therein.
Dependencies are inferred from the claim text.