Cooktop with overflow detection

Abstract

An embodiment of the present utility model relates to a cooktop with overflow detection. The cooktop includes: a burner; a panel assembly; a gas valve for adjusting a flow rate of gas supplied to the burner; an overflow sensor, configured to detect an overflow state of a cooking utensil, where a quantity of overflow sensors is N, and the overflow sensors are disposed around the burner. In this way, overflows from different directions can be detected, thereby improving the accuracy and reliability of overflow detection.

1 - 13 . (canceled) 
     
     
         14 . A cooktop with overflow detection, the cooktop comprising:
 a burner;   a gas valve configured to adjust a flow rate of gas supplied to the burner; and   a quantity of overflow sensors disposed around the burner and configured to detect an overflow state of a cooking utensil.   
     
     
         15 . The cooktop of  claim 14 , wherein the quantity of overflow sensors disposed around the burner is N, with N being greater than or equal to 3. 
     
     
         16 . The cooktop of  claim 14 , further comprising a panel assembly configured to include a panel main body and/or a fluid pan, said overflow sensors concealed below the panel assembly. 
     
     
         17 . The cooktop of  claim 14 , further comprising a panel assembly, wherein the overflow sensors each comprises a temperature sensor configured to detect a temperature information of a plurality of temperature measurement points of the panel assembly, the cooktop further comprising a controller electrically connected to the gas valve and the temperature sensor, said controller configured to receive temperature values of the temperature measurement points of the panel assembly and to calculate a temperature difference of a temperature change of each of the temperature measurement points, said controller configured to pre-store a temperature difference threshold, to compare a received temperature difference of the temperature measurement point with the temperature difference threshold, to calculate a quantity of temperature measurement points whose temperature differences exceed the temperature difference threshold, and to send out different indication information according to a value of the quantity to adjust gas output of the burner. 
     
     
         18 . The cooktop of  claim 17 , further comprising a determining unit connected to the controller and configured to determine a presence of a person around the cooktop, wherein the quantity of temperature measurement points whose temperature differences exceed the temperature difference threshold is equal to a quantity of temperature measurement points of the panel assembly, said controller configured to send out an indication information to control the gas valve not to act, when the determining unit determines the presence of a person around the cooktop, and to send out an indication information to control the gas valve to decrease power or switch off the gas valve, when the determining unit determines an absence of a person around the cooktop. 
     
     
         19 . The cooktop of  claim 18 , wherein the determining unit comprises a human body detection unit configured to detect the presence of a person around the cooktop. 
     
     
         20 . The cooktop of  claim 19 , wherein the human body detection unit comprises an infrared temperature sensor. 
     
     
         21 . The cooktop of  claim 18 , wherein the determining unit comprises a position sensor disposed on a knob of the gas valve and configured to detect whether a position of the knob of the gas valve changes so as to determine whether there is a person around the cooktop. 
     
     
         22 . The cooktop of  claim 21 , wherein the position sensor comprises a resistor or an encoder. 
     
     
         23 . The cooktop of  claim 17 , wherein the controller is configured to send out the indication information to control the gas valve not to act, when the quantity of temperature measurement points whose temperature differences exceed the temperature difference threshold is 0. 
     
     
         24 . The cooktop of  claim 17 , wherein the controller is configured to send out the indication information to control the gas valve to decrease power or switch off the gas valve, when N>n>0, wherein
 N is the quantity of temperature measurement points of the panel assembly, and   n is the quantity of temperature measurement points whose temperature differences exceed the temperature difference threshold.   
     
     
         25 . The cooktop of  claim 17 , further comprising an overflow trigger switch disposed on the panel assembly and electrically connected to the controller, said controller configured to send out the indication information to control the gas valve to decrease power or switch off the gas valve, when the overflow trigger switch is triggered and the quantity of temperature measurement points whose temperature differences exceed the temperature difference threshold is >0. 
     
     
         26 . The cooktop of  claim 25 , wherein the overflow trigger switch comprises a button or a touch key.