Abstract: :Nowadays, more and more biological reagents need to be stored in an environment of 2℃ to 8℃ for a long time to maintain their effectiveness. Improper storage temperature easily leads to inactivation of the reagents. The main cause for inactivated home storage is that the fridge door often opens over the long haul, forgets to close and frequently opens and closes the door. The TRIZ theory is generally applied to engineering as an innovative rule. Based on the TRIZ theory, a conceptual solution to the above problems was designed, as well as corresponding equipment was made. It was found that it can prevent the reagents from being stored with effect at improper temperatures and effectively extend the time in the open state. This is to certify that the TRIZ method can have wide-ranging application value in the home appliance industry.

Key words: TRIZ, Biological reagent, Innovative principle, Refrigerator