Oxygen control system and refrigerator

The oxygen control system comprises an oxygen removal module, a gas supply device, a gas-liquid separation device and a liquid storage tank, the oxygen removal module comprises a gas end plate, an electrode assembly and a liquid end plate, grooves are formed in the opposite faces of the gas end plate and the liquid end plate to form a mounting cavity, the electrode assembly is arranged in the mounting cavity, and the gas supply device is connected with the gas-liquid separation device. The gas end plate is provided with a gas inlet and a gas outlet which are communicated with the mounting cavity, the liquid end plate is provided with a liquid inlet and a liquid outlet which are communicated with the mounting cavity, the electrode assembly comprises a cathode, a diaphragm and an anode, the cathode and the anode are distributed on the two sides of the diaphragm, the cathode is coated with an aerobic reduction reaction catalyst, and the anode is coated with an aerobic precipitation reaction catalyst; the air supply device comprises an air pump and an air inlet pipe; two ends of the air inlet pipe are respectively connected with the air pump and the air inlet; the gas-liquid separation device is provided with a gas return pipe which is connected with the gas outlet; the liquid storage tank is used for storing electrolyte and provided with a liquid inlet pipe and a liquid return pipe, the liquid inlet pipe is connected with the liquid inlet, and the liquid return pipe is connected with the liquid outlet.