Temperature control system for controlling heat treatment of metals, that is heating, soaking and cooling by a single frequency converter
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United States of America Patent
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Mar 20, 2007
Grant Date -
Apr 27, 2006
app pub date -
Jul 2, 2003
filing date -
Jul 5, 2002
priority date (Note) -
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Abstract
The purpose of the present invention is to create a temperature control system applied in heating and cooling phases of thermal processing. The invented temperature control system consists of a single frequency converter F to whose output, through contactors, are simultaneously connected: at least one heating system and at least one cooling system. The heating system incorporating resistance heating elements R is actuated by the heating system contactor SG. The cooling system incorporating gas blower, 3-phases induction motor MD is actuated by the blower motor contactor SD. The heating and cooling system contactors (SG and SD) are connected to the output of the frequency converter F and are controlled by the temperature controller RT.
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