Automatic vacuum fresh-keeping box and control method thereof

Abstract

The invention provides a full-automatic vacuum preservation box which at least comprises a box body and a box cover, wherein a vacuum pump mounting cabin, a battery cabin and a silencer are arranged in the box cover; a vacuum pump and a pressure detection module are arranged in the vacuum pump mounting cabin. According to the full-automatic vacuum preservation box, the vacuum pump, the silencer and other components are integrated in the box cover, so that the space occupied by a vacuumizing mechanism can be effectively reduced, thus the preservation box is more compact in structure and more convenient to carry and use; meanwhile, a unidirectional sealing structure is arranged between the silencer and the vacuum pump and can prevent air from entering the box body from the silencer, thereby playing better sealing and pressure maintaining effects, the startup operation frequency of the vacuum pump is reduced, and the preservation box has a better preservation effect; the pressure detection control module arranged in the box cover can be used for monitoring the vacuum degree in the box body in real time and can keep the vacuum degree in the box body always constant by matching with the vacuum pump, and thus vacuum preservation is realized in a real sense.

Description

technical field [0001] The invention relates to a vacuum fresh-keeping device, in particular to a fresh-keeping box with a vacuum device capable of realizing a fully automatic vacuum pressure keeping function. Background technique [0002] Food can be stored for a long time in a refrigerated environment. The length of food storage time is not only affected by temperature and humidity, but also by factors such as oxygen content and bacteria in the environment. In order to keep food longer, people hope to provide a low-oxygen, low-bacteria food storage environment, and vacuum preservation technology has emerged as the times require. The so-called vacuum preservation is to use vacuum to quickly form a low-oxygen and low-bacteria food storage environment, and quickly remove the volatile ripening gas inside the fruit and vegetable tissues and storage environment, which can greatly delay the ripening and aging process of fruits and vegetables , prolong the storage period, and vac...

AI Technical Summary

Problems solved by technology

Since the fresh-keeping box body must be provided with a door or cover for accessing items, in order to ensure sealing, these doors or covers are often provided with sealing strips, but it is also difficult to ensure absolute sealing without leakage (because any object is theoretically There are also molecular gaps, so there is no absolutely leak-free box), so it is difficult for these fresh-keeping boxes to ensure that the fresh-keeping box remains in a vacuum state after the vacuum is completed.

[0005] From the above analysis, it can be known that the existing vacuum fresh-keeping boxes are difficult to ensure that the fresh-keeping box is still in a vacuum state after a vacuum pumping (even if it is still in a vacuum state, its vacuum value has become very low, and the fresh-keeping effect is poor)

At this time, many users still think that the items are in a vacuum state, so it will often appear that the items in the crisper will deteriorate due to this reason.

Images