초록 ▼

An improved power control system for a household cooking appliance of the type having a glass ceramic cooking surface and at least one radiant heating unit disposed beneath the cooking surface operable at a plurality of user selectable power settings. At least one of the power settings has associate

An improved power control system for a household cooking appliance of the type having a glass ceramic cooking surface and at least one radiant heating unit disposed beneath the cooking surface operable at a plurality of user selectable power settings. At least one of the power settings has associated with it predetermined maximum and minimum reference temperatures defining a temperature band representative of the steady state temperature range for the glass ceramic support surface proximate the heating unit when heating normal loads at that power setting. The power control system includes an arrangement for sensing the temperature of the glass ceramic cooking surface proximate the heating unit and is operative to operate the heating unit at a power level other than the power level corresponding to the user selected power setting when the sensed glass ceramic support surface temperature is outside the predetermined reference temperature band associated with the selected power setting to more rapidly bring the temperature within the band and thereby causing the heating unit to respond quickly to changes in user selected power setting.

대표청구항 ▼

In a household cooking appliance of the type having a glass ceramic cooking surface for supporting loads to be heated, and at least one radiant heating unit disposed beneath the glass ceramic cooking surface to heat loads supported thereon, a power control system comprising: temperature sensing mean

In a household cooking appliance of the type having a glass ceramic cooking surface for supporting loads to be heated, and at least one radiant heating unit disposed beneath the glass ceramic cooking surface to heat loads supported thereon, a power control system comprising: temperature sensing means for sensing the temperature of the underside of the glass ceramic support surface proximate the heating unit; user actuable input selection means for enabling the user to select one of a plurality of power settings for the heating unit; at least one of said plurality of power settings having associated with it predetermined maximum and minimum reference temperatures defining a temperature band representative of the steady state temperature range of the underside of the glass ceramic support surface proximate the heating unit when heating loads at that power setting; and power control means responsive to the input selection means, operative to operate the heating unit at a steady state power level corresponding to the user selecting power setting; said power control means including means responsive to said temperature sensing means for operating the heating unit at a power level other than the power level corresponding to the user selected power setting when the sensed glass ceramic support surface temperature is outside said predetermined reference temperature band associated with the selected power setting to cause the heating unit to respond quickly to changes in the user selected power setting.