| 摘要 |
PURPOSE: A refrigerant leakage sensing method of a refrigerator is provided to repetitively detect refrigerant leakage errors based on a temperature change inside storage and to accurately sensing the existence of the leakage by finally determining the existence of the leakage according to the number of the detected errors. CONSTITUTION: A refrigerant leakage sensing method of a refrigerator is as follows. A control unit measures temperature inside storage, thereby saving the temperature as first temperature(S110). The control unit measures the temperature inside the storage again after a preset period, thereby saving the temperatures as second temperature(S130). Refrigerant leakage errors are detected by using a temperature change inside the storage based on the first temperature and the second temperature(S160). [Reference numerals] (AA) Start; (BB) End; (S100) Compressor is in operation?; (S110) Measuring and storing the inner temperature of a storage (T1); (S120) Set time has elapsed?; (S130) Measuring and storing the inner temperature of the storage (T2); (S140) Temperature has risen?; (S150) Temperature change(|T2-T1|) <= Reference change ?; (S160) Detecting a refrigerant leakage error; (S170) Increasing and storing an error count; (S180) Initializing T1, T2, and the error count; (S190) Error count = Reference count ?; (S200) Warning a refrigerant leakage; (S210) Cutting off operating power; (S220) Comparing T1 and T2 and storing the higher value as T1 |
