Airtightness inspection method for refrigerating and freezing equipment and refrigerating and freezing equipment

Abstract

An airtightness check method for a refrigeration and freezing device. A sealed space is provided inside a storage compartment of the refrigeration and freezing device; the sealed space is filled with nitrogen to fresh food therein. The check method comprises: measuring nitrogen concentration inside a sealed space (S302); determining a maintaining duration during which the nitrogen concentration inside the sealed space is maintained within a preset range of concentration to be measured (S304); calculating a duration difference between the maintaining duration and a preset statistical duration (S306); if the duration difference is greater than a preset threshold, determining that the airtightness of the sealed space does not satisfy a preset requirement (S310); and if the duration difference is smaller than or equal to the preset threshold, determining that the airtightness of the sealed space satisfies the preset requirement (S312). The check method can determine, on the basis of a duration required for a change in the nitrogen concentration in a sealed space, whether the airtightness of the sealed box satisfies a preset requirement, and can timely find out cases where sealed boxes are not tightly sealed. Also provided is a refrigeration and freezing device.

Description

technical field [0001] The invention relates to the field of item storage, in particular to an airtightness inspection method for a refrigerating and freezing device and the refrigerating and freezing device. Background technique [0002] In order to improve their own fresh-keeping effect, some current refrigerating and freezing equipment will install a nitrogen generator inside, and fill the sealed box or sealed drawer in the room with nitrogen to inhibit the aerobic respiration of the food itself and the growth of microorganisms. [0003] For this type of refrigerating and freezing equipment, after the user opens the sealed box to take and place the food, there will be a situation that the user forgets to close the sealed box or closes the sealed box laxly. For example, a sealed box with a drawer is not tightly sealed because the user forgets to close the drawer or does not push the drawer to the bottom. Another example is a sealed box with a pivotable door body, which is ...

AI Technical Summary

Problems solved by technology

For example, a sealed box with a drawer is not tightly sealed because the user forgets to close the drawer or does not push the drawer to the bottom. Another example is a sealed box with a pivotable door body, which is not tightly sealed because the user does not close the door tightly. Yan etc.

These conditions will lead to the rapid loss of nitrogen in the sealed box, thereby affecting the freshness of food

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