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US 2003/0071032 A1Published application
Heating system
AssigneeNGK Insulators, Ltd.
InventorsShinji Yamaguchi, Yoshinobu Goto, Hisakazu Okajima, Yutaka Unno
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AssigneeNGK Insulators, Ltd.
InventorsShinji Yamaguchi, Yoshinobu Goto, Hisakazu Okajima, Yutaka Unno
Estimating the term…
A heating system 25 has a main heating element 3 generating heat be supplying an electric power supplied and having a heating surface 4a for heating an object, auxiliary heating elements 5A to 5D generating heat by supplying an electric power, and a main power source 1 for supplying the to the main heating element 3. The system 25 further has an auxiliary power source 2 supplying the power to the auxiliary heating elements 5A to 5D, and a power source controller 2 for controlling the power supplied to the main heating element and the power supplied to the auxiliary heating elements respectively and independently. The power supplied from the main power source 1 to the main heating element 3 is controlled by the controller 2 within a first power range. The power supplied from the auxiliary power source to the auxiliary heating elements is controlled by the controller 2 within a second power range. The second power range has a width smaller than that of the first power range so as to control temperature distribution on the heating surface 4a.
A heating system comprising a main heating element generating heat by supplying an electric power and having a heating surface for heating an object, an auxiliary heating element generating heat by supplying an electric power, a main power source for supplying said electric power to said main heating element, an auxiliary power source for supplying said electric power to said auxiliary heating element, and a power source controller for controlling said electric power supplied to said main heating element and said electric power supplied to said auxiliary heating element respectively and independently,
Dependencies are inferred from the claim text.