Exhaust hood and method for controlling the operation of an exhaust hood

Abstract

An exhaust hood has a fan apparatus for drawing away discharge air from a cooking appliance, which is arranged beneath the exhaust hood and which has at least one cooking area. A temperature detection device detects a temperature of at least one cooking area of the cooking appliance and a cooking vapor detection device detects cooking vapors in the discharge air which is drawn away by suction by the fan apparatus. A control device of the exhaust hood switches on the fan apparatus depending on a temperature which is detected by the temperature detection device and controls a suction-removal power of the fan apparatus depending on cooking vapors which are detected by the cooking vapor detection device.

1 . An exhaust hood for placement above a cooking appliance having at least one cooking area, comprising:
 a fan apparatus for suctioning away discharge air from the cooking appliance arranged beneath the exhaust hood;   a temperature detection device for detecting a temperature of the at least one cooking area of the cooking appliance;   a cooking vapor detection device for detecting cooking vapors contained in the discharge air drawn away by suction with said fan apparatus; and   a control device connected to receive information from said temperature detection device and from said cooking vapor detection device, said control device being configured for switching on said fan apparatus in dependence on a temperature detected by said temperature detection device and for controlling a suction-removal power of said fan apparatus in dependence on cooking vapors detected by said cooking vapor detection device.   
     
     
         2 . The exhaust hood according to  claim 1 , wherein said temperature detection device comprises at least one infrared sensor disposed for detecting the temperature of the at least one cooking area of the cooking appliance. 
     
     
         3 . The exhaust hood according to  claim 1 , wherein said control device is configured to switch on said fan apparatus at a relatively low power level if a relatively low temperature is detected by said temperature detection device. 
     
     
         4 . The exhaust hood according to  claim 1 , wherein:
 said temperature detection device is configured for detecting respective temperatures of a plurality of cooking areas of the cooking appliance separately;   said fan apparatus is configured for generating separate streams of discharge air from the individual cooking areas of the cooking appliance; and   said control device is configured to control the separate streams of discharge air of said fan apparatus depending on the respective temperatures detected by said temperature detection device.   
     
     
         5 . The exhaust hood according to  claim 1 , wherein said control device is configured to switch off said fan apparatus depending on a temperature detected by said temperature detection device, depending on the cooking vapors detected by said cooking vapor detection device, in a time-dependent manner and/or by manual operator control. 
     
     
         6 . A method of controlling an operation of an exhaust hood arranged above a cooking appliance having one or more cooking areas, the method comprising the following steps:
 detecting a temperature of at least one cooking area of the cooking appliance;   switching on a fan apparatus of the exhaust hood depending on the detected temperature;   detecting cooking vapors in the discharge air being drawn away by suction with the fan apparatus; and   controlling a suction-removal power of the fan apparatus depending on the cooking vapors which are detected.   
     
     
         7 . The method according to  claim 6 , which comprises switching on the fan apparatus at a low power level depending on the detected temperature. 
     
     
         8 . The method according to  claim 6 , which comprises;
 separately detecting respective temperatures of several cooking areas of the cooking appliance; and   controlling separate streams of discharge air of the fan apparatus from individual cooking areas of the cooking appliance depending on the detected temperatures.   
     
     
         9 . The method according to  claim 6 , which comprises switching off the fan apparatus of the exhaust hood depending on a detected temperature of at least one cooking area of the cooking appliance, depending on detected cooking vapors, in a time-dependent manner and/or by manual operator control.