Refrigeration equipment

CN224230465UActive Publication Date: 2026-05-12QINDAO HAIER REFRIGERATOR CO LTD +1
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Patent Information

Application Number
CN202520797204.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-24
Publication Date
2026-05-12
Estimated Expiration
2035-04-24

AI Technical Summary

Technical Problem

Existing technologies for reducing oxygen concentration in food preservation spaces suffer from high requirements for sealing performance, high energy consumption, and low efficiency, resulting in poor preservation effects.

Method used

An integrated preservation module with oxygen-controlled and nitrogen-controlled membranes connected to the outside is used, combined with a suction device. Oxygen is discharged through the oxygen-controlled membrane and nitrogen is introduced through the nitrogen-controlled membrane to form a low-oxygen, high-nitrogen gas atmosphere. Vacuum pumps and circulating fans are used to optimize gas separation and circulation.

Benefits of technology

It achieves pressure balance and gas atmosphere optimization within the preservation space, improving preservation effect, extending food preservation time, and reducing energy consumption and work efficiency.

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Abstract

The utility model discloses refrigeration equipment which comprises a fresh-keeping chamber, a fresh-keeping integrated module and a suction device. A fresh-keeping space for storing food materials is formed in the fresh-keeping chamber; the fresh-keeping integrated module is arranged on the fresh-keeping chamber and comprises a packaging shell, an oxygen control film and a nitrogen control film, the oxygen control film and the nitrogen control film are fixed to the packaging shell, and the fresh-keeping chamber communicates with the outside through the oxygen control film and the nitrogen control film. The suction device communicates with the oxygen control film and is used for collecting oxygen passing through the oxygen control film and discharging the oxygen to the outside of the fresh-keeping chamber. According to the fresh-keeping device, the oxygen content in the fresh-keeping space is effectively reduced, the concentration of nitrogen is improved, a low-oxygen and high-nitrogen gas atmosphere is formed, and the fresh-keeping effect is improved.
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