Abstract: With the increase in people’s demand of household food freshness, the single-pattern air supply and temperature/freshness control in the conventional refrigerator no longer meet the requirement of food preservation nowadays. To address the problem of poor preservation quality with non-partitioned storage in conventional refrigerators, this article proposes the concept of temperature-humidity-oxygen-based precise preservation and flexible partitioned storage. The two-factor mathematical model is built for preservation quality and efficient use of compartment space. Besides, the scheme of flexible partitioned storage is also determined according to user survey data and food deterioration experiments. Compared to the conventional refrigerators, that with the new concept enhances food preservation quality by 56%.

Key words: Food preservation, Flexible partition, Space efficiency, Two-factor model