Heating – Processes of heating or heater operation – Controlling flame position or work atmosphere
Patent
1986-05-21
1988-02-23
Tanner, Harry
Heating
Processes of heating or heater operation
Controlling flame position or work atmosphere
432 47, 432205, F27D 700, F25D 1900
Patent
active
047267640
ABSTRACT:
A heat treating apparatus which comprises a core tube for containing a material to be treated, a heating furnace surrounding the core tube, core tube gas supply means for supplying gas into the core tube, furnace gas supply means for supplying gas into a furnace body of the furnace, differential pressure detecting means for detecting the differential pressure between the pressure in the core tube and the gas pressure in the body, and differential pressure regulating means for regulating the differential pressure between the gas pressure in the core tube and the gas pressure in the body on the basis of a differential pressure signal from the detecting means. The apparatus is operated by regulating the gas pressure in the core tube so that the differential pressure between the gas pressure in the core tube and the gas pressure in the body fall within a tolerable range, thereby preventing the core tube from deforming.
REFERENCES:
patent: 4561309 (1985-12-01), Rosner
Mirza et al., Clean Oven, IBM Technical Disclosure Bulletin, vol. 14, No. 8, Jan. 1972, 34-51.
Tanner Harry
The Furukawa Electric Co. Ltd.
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