Atmosphere-controlling freshness retaining control device and technology for retaining freshness of fruits and vegetables in storage bag

Abstract

The invention discloses an atmosphere-controlling freshness retaining control device and technology for retaining the freshness of fruits and vegetables in a storage bag. The device comprises the storage bag, a gas mixer, a gas detection device and a circuit control device with a touch screen, wherein an air inlet/outlet of the storage bag is connected with the gas mixer, a vacuum pump and the gas detection device, a nitrogen inlet of the gas mixer is connected with a nitrogen source, an air inlet of the gas mixer is connected with a gas storage tank and an air compressor in series, a gas mixture detection port is connected with the gas detection device, and the signal output end of the circuit control device with the touch screen is connected with the air compressor, the gas detection device, the vacuum pump and an electromagnetic valve. The technique comprises the steps that the nitrogen source is turned on, fruits and vegetables are placed in the storage bag, parameters are set, the storage bag is vacuumized, the storage bag is filled with a gas mixture and detection is conducted. The atmosphere-controlling freshness retaining control device and technology for retaining the freshness of fruits and vegetables in the storage bag have the advantages that atmosphere-controlling parameters of the interior of the storage bag reach the fruit and vegetable freshness-retaining range rapidly, and the freshness of fruits and vegetables can be retained for a long time; equipment is simple, operation is easy and convenient, the occupied space is small, power consumption is low, and the device and technique are particularly suitable for ships on which refrigeration chambers are established.

Description

technical field [0001] The invention relates to a fresh-keeping device for modified-atmosphere packaging of fruits and vegetables, in particular to a modified-atmosphere fresh-keeping control device and process for keeping fruits and vegetables in fresh-keeping bags suitable for use on ships. Background technique [0002] In the existing technology, most of the ships use controlled atmosphere storage or refrigeration equipment to keep fruits and vegetables fresh, but the controlled atmosphere storage is suitable for long-term storage of large quantities of single-variety fruits and vegetables. Varieties of fruits and vegetables are kept fresh; while refrigeration equipment keeps fruits and vegetables fresh through refrigeration and low temperature, which also has a short shelf life and poor fresh-keeping effect, and is not suitable for ocean-going use on ships. [0003] Composite modified atmosphere packaging is collectively referred to as "MAP" packaging (Modified Atmospher...

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Problems solved by technology

In view of the restrictions on the above-mentioned three gas sources on board, the modified atmosph

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