Vacuum preservation system and control method thereof

Abstract

The invention relates to the technical field of vacuum preservation, in particular to a vacuum preservation system and a control method of the vacuum preservation system. The vacuum preservation system comprises a sealing case, an action system and a control system. A first on-off switch for controlling the sealing case to be opened or closed is arranged on the sealing case. The action system comprises a motor and a vacuum pump which is electrically connected with the motor, the vacuum pump and the sealing case are communicated through a connecting pipe, the control system is electrically connected with the first on-off switch and the motor, the sealing case is further connected with at least one auxiliary sealing case in series, the sealing case and the auxiliary sealing case are connected through a connecting pipe with a first one-way valve, the one-way valve is arranged in the direction which is the same as the conducting direction from the auxiliary sealing case to the sealing case, and a second on-off switch for detecting whether the auxiliary sealing case is opened or not is arranged on the auxiliary sealing case. The internal storage space of a refrigerator is effectively utilized, the energy-saving and efficient functions are achieved, the good sealing performance of all the sealing cases is guaranteed, and fruits and vegetables placed into the sealing cases can be well preserved.

Description

technical field [0001] The present invention relates to the technical field of vacuum preservation, and more specifically, to a vacuum preservation system and a control method thereof. Background technique [0002] With the improvement of living standards, refrigerators have entered thousands of households and become a necessity for household life. People have higher and higher requirements for the ability of refrigerators to store food. As we all know, the length of food storage time is not only affected by temperature and humidity, but also related to factors such as the oxygen content and bacteria in the air in the food storage environment. In order to keep food longer, people hope to provide a low temperature, low oxygen, Low-bacteria food storage environment, such as vacuum crisper. The working principle of the vacuum preservation box is to add an air extraction device to a fully enclosed drawer box. The air extraction device extracts air from the drawer to reduce the ...

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Problems solved by technology

[0003] At present, the application cost of vacuum preservation boxes on refrigerators is relatively high, because the size of vacuum preservation boxes is basically fixed due to the limited influence of refrigerator shelves, which means that the space for vacuum preservation of fruits and vegetables and food is limited, and the vacuum preservation device is limited. The freshness preservation performance has not been fully utilized

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