Refridgerating device with a temperature sensor

Abstract

A refrigerating device is equipped with a temperature sensor in the form of an infrared sensor ( 7 ), for detecting an operating temperature of the device. Said infrared sensor ( 7 ) is located on a board ( 5 ) in a non-refrigerated are of the refrigerating device, together with a control circuit.

1 . A refrigerating device with a temperature sensor for detecting an operating temperature of the device, characterised in that the temperature sensor is an infrared sensor ( 7 ).  
     
     
         2 . The refrigerating device according to  claim 1 , characterised in that the operating temperature is the temperature of an interior ( 6 ) of the refrigerating device.  
     
     
         3 . The refrigerating device according to  claim 2 , characterised in that the infrared sensor ( 7 ) is in visual contact with a black body ( 11 ) located in the interior ( 6 ).  
     
     
         4 . The refrigerating device according to  claim 1 , characterised in that the operating temperature is the temperature of an evaporator ( 14 ) of the refrigerating device.  
     
     
         5 . The refrigerating device according to  claim 4 , characterized in ithat the infrared sensor ( 7 ) is in visual contact with a surface of the evaporator ( 14 ) facing the interior ( 6 ) of the refrigerating device.  
     
     
         6 . The refrigerating device according to one of the preceding claims, characterised in that the infrared sensor ( 7 ) is connected to a control circuit for the operating temperature and is located in the immediate neighhourhood thereof.  
     
     
         7 . The refrigerating device according to  claim 6 , characterised in that the infrared sensor ( 7 ) is located on a common board ( 5 ) with the control circuit.  
     
     
         8 . The refrigerating device according to one of the preceding claims, characterised in that the temperature sensor is attached in a non-refrigerated outer area of the refrigerating device and is separated from a measuring surface to be monitored by means of an infrared-transparent window ( 10 ,  15 ).  
     
     
         9 . The refrigerating device according to  claim 8 , characterised in that the temperature sensor is accommodated below a front screen ( 4 ) of the refrigerating device.  
     
     
         10 . The refrigerating device according to one of the preceding claims, characterised by a lens ( 15 ) for imaging a measuring surface ( 17 ) on a radiation-sensitive surface of the temperature sensor.