A double-working-condition semiconductor refrigeration type fruit and vegetable distribution box and its control method

Abstract

The invention discloses a dual-working-condition semiconductor refrigeration type fruit and vegetable distribution box and a control method thereof, comprising a distribution box body with an air-guiding partition, a cooling aluminum plate, an equalizing plate, and a heat-dissipating aluminum plate, a basic circuit module, and a main control unit. module, actuator, signal acquisition module; basic circuit module includes power circuit, crystal oscillator clock circuit, reset circuit and power conversion module; main control module includes central controller, program programming circuit, keyboard circuit, LCD display circuit, actuator control circuit; the actuator includes a cooling fan, a heat dissipation fan, and a semiconductor refrigeration module; the signal acquisition module includes a temperature sensor circuit; when working, the cooling fan forces the airflow to circulate, and the airflow absorbs cold energy at the cooling aluminum plate and passes through the air-guiding partition The cold air flow guides into the fresh-keeping environment of fruits and vegetables, realizes heat transfer with fruits and vegetables, and then flows into the cold-conducting aluminum plate, thus realizing the cooling and cooling process. The invention has the advantages of adjustable temperature, uniform cooling, flexible control, energy saving and environmental protection.

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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