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(11) | EP 2 474 799 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Temperature control systems |
| (57) We describe systems and methods for controlling the internal temperature of cooling
apparatus without using a temperature sensor inside the cooled zone. In one embodiments
a refrigerator comprises: a thermally insulated cooled zone with a door to enable
user access; a cooling system to cool the cooled zone; a control unit coupled to control
the cooling system; and a temperature sensor coupled to the control unit. The temperature
sensor is outside the cooled zone to sense an ambient temperature of the refrigerator
and stores apparatus characterising data characterising a relationship between a pattern
of operation of the cooling system and a temperature of the cooled zone for a plurality
of different ambient temperatures. The control unit controls the pattern of operation
of the cooling system responsive to the sensed ambient temperature and stored apparatus
characterising data to adjust the temperature of the cooled zone towards a target
temperature.
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