A vegetable and fruit preservation device based on LED pulsed light

Abstract

An apparatus for preserving freshness of vegetables and fruits based on LED pulsed light, comprising a box body (1). A door (2) is provided on the front side of the box body (1). A plurality of freshness preserving racks (3) is provided within the box body (1). An ultraviolet sterilizer (4) is provided on a top plate of the box body (1). Lighting devices are provided below the freshness preserving racks (3). A temperature and humidity controller (6) is provided at the bottom of the box body (1). An air guide unit (7) is provided on the top plate of the box body (1). An air pipe (8) is provided on a side wall of the box body (1). An air outlet communicating with the interior of the box body is provided on the air pipe (8). The upper end of the air pipe (8) communicates with an air inlet of the air guide unit (7). A spectrum controller is used to regulate and control the excitation wavelength of an LED luminous body to form reasonable and ordered optical signals with combined spectrum, so that vegetables and fruits can restore metabolism in a lighting environment of the optical signals to conduct photosynthesis and maintain low-speed growth, and the freshness of the vegetables and fruits can be effectively prolonged.

Description

technical field [0001] The invention relates to the technical field of fresh-keeping of fruits and vegetables, in particular to a fresh-keeping device for fruits and vegetables based on LED pulsed light. Background technique [0002] With the continuous improvement of people's material living standards, people have put forward higher requirements for the freshness of vegetables and fruits. As we all know, vegetables and fruits are rich in a variety of nutrients that are beneficial to human health. Generally, a large amount of chlorophyll is distributed on the surface of vegetables and fruits to facilitate photosynthesis. Even the fruits of plants may not necessarily appear as Green, but also contains a certain amount of chlorophyll, and also has a certain photosynthetic ability. [0003] As plant products, the taste and texture of fruits and vegetables will obviously deteriorate after long-term storage. On the one hand, this is caused by dehydration, and on the other hand, ...

AI Technical Summary

Problems solved by technology

[0003] As plant products, the taste and texture of fruits and vegetables will obviously deteriorate after long-term storage. This is caused by dehydration on the one hand, and on the other hand, it is often difficult for plants to receive sufficient light to maintain photosynthesis during storage.

Because plants will continue to decompose their own starch and other sugars and other nutrients under the action of respiration, which will reduce the quality of vegetables and fruits during storage.

For the dehydration of plants, we can solve the problem by adjusting the ambient humidity of the vegetable and fruit storage room or refrigeration equipment, but it is difficult to solve the problem of plants lacking reasonable light for photosynthesis

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