| 摘要 |
PROBLEM TO BE SOLVED: To prevent fruits, etc., from being oxidized with oxygen in the air during the storage, the surface in contact with the air from being turned yellow, and the taste of beans or grains from being deteriorated during the storage. SOLUTION: A solid polymer electrolytic film and two electrodes 2, 3 holding the film therebetween are provided, and when the current flows between the electrodes, oxygen is generated on the anode side while oxygen present on the cathode side is lost in the electrode reaction. When the anode 3 is arranged in a vegetable chamber 7 in a refrigerator, the oxygen concentration in the vegetable chamber 7 can be reduced. That means, the cathode 3 is arranged in the vegetable chamber 7 at a bottom part of the refrigerator, and an oxygen sensor 15 and a humidity sensor 16 are fitted so as to monitor the oxygen concentration and the humidity. The drain water 9 generated by thawing the frost adhered to a cooling plate 8 during the defrosting is passed through a filter 10 such as microtube and activated charcoal, and then, stored in a water reservoir tank 11. A water level sensor 12 is fitted to a water container 5, and the water level is dropped below the prescribed value, water is supplied from the water reservoir tank 11. |
