| 摘要 |
The present invention is provided to prevent the degradation of freshness of food by using carbon dioxide generated by a photocatalytic reaction. A glass member (70) in which a photocatalytic layer (71) is formed by interposing a sealing member (72) is mounted on a ceiling unit (42) of a decompression storage room (24) installed in a refrigerator. A light source (80) is arranged on the upper side of the glass member (70) through a small polarity interval. When an LED (83) of the light source (80) turns on, the light is delivered to the photocatalytic layer (71) by passing through the glass member (70). The photocatalytic layer (71) generates radical with moisture and divides the gas of food into the carbon dioxide and water. The breathing of vegetable, an enzyme reaction of meat and fishes, and the reproduction of microorganism are restrained by increasing the concentration of the carbon dioxide of the storage room (24). [Reference numerals] (28) Pressure sensor; (29) Negative pressure pump; (90) Controller; (91) Door switch of a refrigerator; (92) Door switch of a decompression storage room; (93) Food gas sensor; (AA) Food |
