Fresh-keeping method for refrigerator

By using oxygen-enriching components and air extraction devices combined with oxygen-reducing regulators in the refrigerator, a differentiated design of oxygen concentration in multiple compartments is achieved, solving the problems of high cost and difficulty in adjusting oxygen concentration in existing technologies, and achieving efficient and economical food preservation.

CN122305727APending Publication Date: 2026-06-30QINDAO HAIER REFRIGERATOR CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
QINDAO HAIER REFRIGERATOR CO LTD
Filing Date
2024-12-31
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing multi-compartment preservation solutions for refrigerators are costly and difficult to design with differentiated oxygen concentrations, thus failing to effectively meet the oxygen requirements of different foods.

Method used

By combining oxygen-enriching components and an air extraction device with an oxygen-depressing regulator, and controlling the alternating operation of the air extraction device and the oxygen-depressing regulator through a controller, differentiated oxygen concentrations can be achieved in multiple compartments, while sharing the oxygen-enriching components and the air extraction device to reduce costs.

Benefits of technology

It achieves efficient oxygen reduction in multi-compartment refrigerators, reduces costs, can adjust oxygen concentration according to the needs of different foods, saves power consumption, maintains system pressure balance, and extends the shelf life of food.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses a preservation method for refrigerators, relating to the field of refrigerators. The refrigerator has at least two independent preservation compartments. The preservation device includes: an oxygen-enriching component, comprising an oxygen-enriching membrane, a collection chamber, and an oxygen-reducing chamber, with the collection chamber and oxygen-reducing chamber located on opposite sides of the oxygen-enriching membrane; at least two vents in the oxygen-reducing chamber for connecting the at least two preservation compartments; an air extraction device; an oxygen-reducing adjustment component, used to adjust the airflow of at least one vent after the air extraction device is activated, thereby adjusting the level of the preservation compartment; and a controller to control each adjustable preservation compartment to alternately enter an oxygen-reducing mode and a stable mode. The preservation device of this invention has an adjustable oxygen-reducing capacity for the preservation compartments, adapting to the oxygen concentration requirements of different types of food. This preservation method is simple and has low energy consumption.
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