Double-working-condition semiconductor refrigeration type fruit and vegetable distribution box and control method thereof

Abstract

The invention discloses a double-working-condition semiconductor refrigeration type fruit and vegetable distribution box and a control method thereof. The distribution box includes a distribution box body provided with an air guide baffle, a cold guide aluminium plate, a cold equalizing plate and a heat dissipation aluminium plate, as well as a basic circuit module, a master control module, an executing mechanism and a signal acquisition module, wherein the basic circuit module includes a power source circuit, a crystal oscillation clock circuit, a reset circuit and a power source conversion module; the master control module includes a central controller, a program writing circuit, a keyboard circuit, an LCD display circuit and an executing mechanism control circuit; the executing mechanism includes a cold guiding blower, a heat dissipation blower and a semiconductor refrigeration module; the signal acquisition module includes a temperature sensor circuit. During working, the cold guiding blower drives air flow to circulate in a forced manner, so that air flow absorbs cold energy at the cold guide aluminium plate, cold air flow passing through the air guide baffle is guided to the fruit and vegetable fresh-keeping environment and transfers heat with fruits and vegetables and then reflows to the cold guide aluminium plate, as a result, the refrigeration and cooling are realized. According to the invention, the distribution box has the advantages that the temperature is adjustable, the temperature reduction is uniform, the control is flexible, energy is saved, and the environment is protected, and the like.

Description

technical field [0001] The invention relates to the technical field of fresh-keeping transportation of fruits and vegetables, in particular to a dual-working-condition semiconductor refrigeration type fruit and vegetable distribution box and a control method thereof. Background technique [0002] Since the fresh-keeping transportation technology and facilities of fruits and vegetables in our country are relatively backward, resulting in serious post-harvest loss of fruits and vegetables. The loss rate in the process of fruit and vegetable logistics in my country is as high as 25% to 30%, which is 4 to 6 times that of developed countries. The annual economic loss reaches hundreds of billions of yuan, and the annual rotten and wasted fruits and vegetables can almost meet the basic needs of 200 million people, ranking first in the world. With the increasing requirements of consumers for food safety and food quality, it is urgent to improve the quality of fruits and vegetables,...

AI Technical Summary

Problems solved by technology

However, the existing fresh-keeping boxes for fruits and vegetables generally adopt the combination of cold storage bags and incubators for fresh-keeping and distribution, which have disadvantages such as extensive temperature control, uneven temperature field, frequent temperature fluctuations, and localized chilling damage, making it difficult to meet the requirements for fresh-keeping and distribution of fruits and vegetables

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