Patent ID: 9581338
Date: 2017-02-28
CPC Classifications: F24C,F24F

Claim:
1. An extractor hood equipped with a fan of which air volume can be changed in response to a temperature of a food to be cooked or a cooking pan, the food to be cooked or the cooking pan disposed on a cooker, the extractor hood comprising: an infrared sensor for detecting a first temperature, the first temperature being derived from (i) a temperature of the food to be cooked or the cooking pan disposed at a top face of the cooker and (ii) a temperature of the top face of the cooker adjacent to the food to be cooked or the cooking pan; a temperature sensor for detecting a second temperature, the second temperature being an ambient air temperature of the cooker; a signal receiver for receiving a cooker signal supplied from the cooker; and an air-volume controller for changing the air volume of the fan, wherein the air-volume controller calculates a temperature of the food to be cooked or the cooking pan based on the first temperature and the second temperature, and then determines the air volume of the fan based on the temperature of the food to be cooked or the cooking pan, and the cooker signal, and wherein the temperature of the food to be cooked or the cooking pan is calculated by an equation, where, T is the temperature of the food to be cooked or the cooking pan, α is a correction value depending on a type of the cooker, β is a correction value sent from the cooker, and Sh is a detectable range of infrared sensor, Tp is the first temperature, Th is the second temperature and Sa is an area of the food to be cooked or the cooking pan.