Method for protecting a cooker extractor hood against overheating

Abstract

The invention relates to a method as well as a device to protect against overheating in a cooker extractor hood ( 1 ) over a cooker ( 7 ) with at least one fan device ( 4 ) and with at least one temperature sensor ( 5, 6 ). To this end the method includes the steps of detection of a temperature by the temperature sensor ( 5, 6 ); when a first temperature threshold is reached or exceeded (level 1) of increasing the blower output ( 4 ); when a second temperature threshold is reached or exceeded (level 2) of presentation of a second warning signal, and when a third threshold is reached or exceeded (level 3) of switching off the blower device ( 4 ).

1 - 17 . (canceled) 
   
   
       18 . A method for protecting a cooker extractor hood mounted above a cooker against overheating, with a blower device and a temperature sensor, the method comprising:
 detecting a temperature with the temperature sensor;   increasing the blower power when the temperature reaches or exceeds a first temperature threshold;   displaying a warning signal when the temperature reaches or exceeds a second temperature threshold; and   switching the blower device off when the temperature reaches or exceeds a third temperature threshold.   
   
   
       19 . The method of  claim 18  and further comprising displaying the warning signal when the temperature reaches or exceeds the first temperature threshold. 
   
   
       20 . The method of  claim 19 , wherein the warning signal comprises an optical indication of an increased temperature in the cooker extractor hood. 
   
   
       21 . The method of  claim 18 , wherein the warning signal comprises an acoustic or visual indication of a danger of fire. 
   
   
       22 . The method of  claim 18  and further comprising displaying another warning signal when the temperature reaches or exceeds the third temperature threshold. 
   
   
       23 . The method of  claim 22 , wherein the another warning signal comprises an acoustic signal or an optical indication that a maximum temperature has been reached or of the deactivation of the operation of the cooker extractor hood. 
   
   
       24 . The method of  claim 22 , wherein the another warning signal continues to be displayed after the temperature subsequently falls below the third temperature threshold. 
   
   
       25 . The method of  claim 18  and further comprising extinguishing the warning signal when the temperature falls below the second temperature threshold. 
   
   
       26 . The method of  claim 18  and further comprising switching off an area of the cooker when the temperature reaches or exceeds the third temperature threshold. 
   
   
       27 . The method of  claim 18 , wherein the blower devices remains switched off when the temperature subsequently falls below the third temperature threshold. 
   
   
       28 . The method of  claim 18 , wherein said reaching or exceeding one of the first temperature threshold, the second temperature threshold, and the third temperature threshold is defined by reaching or exceeding a temperature threshold for a predetermined time. 
   
   
       29 . An overheating protection device for a cooker extractor hood mounted above a cooker with a blower device and a temperature sensor, the device comprising:
 means for detecting a temperature with the temperature sensor;   means for increasing the blower power when the temperature reaches or exceeds a first temperature threshold;   means for displaying a warning signal when the temperature reaches or exceeds a second temperature threshold; and   means for switching the blower device off when the temperature reaches or exceeds a third temperature threshold   
   
   
       30 . An overheating protection device, comprising:
 a temperature sensor that provides a temperature signal;   a blower controller responsive to the temperature signal reaching or exceeding a first temperature to increase a power to a blower device;   a warning signal display that displays a warning when the temperature signal reaches or exceeds a second temperature threshold,   wherein the blower controller is further responsive to switch the blower off when the temperature signal reaches or exceeds a third temperature threshold.   
   
   
       31 . The device of  claim 30  and further comprising a measured value memory. 
   
   
       32 . The device of  claim 30  wherein the temperature sensor is positioned in an induction area or a fan duct of a cooker extractor hood. 
   
   
       33 . The device of  claim 30 , wherein the cooker extractor hood is mounted above a cooker and wherein the overheating protection device is electrically connected to the cooker. 
   
   
       34 . The device of  claim 33 , wherein the cooker comprises a gas burner. 
   
   
       35 . The device of  claim 34  and further comprising a gas supply to the gas burner that comprises a valve.