A kind of far-infrared multifunctional drying method

Abstract

The invention discloses a far-infrared multifunctional drying system and a drying method. The far-infrared multifunctional drying system comprises a far-infrared light wave drying box body and an intelligent sensing control system. The far-infrared light wave drying box body is composed of a drying box shell, a plurality of sets of far-infrared plane radiation light wave electric heating materials, a drying box inner container, a fixed base, an inner container bearing, an inner container motor, a severe convection fan and a dehumidification fan. The far-infrared plane radiation light wave electric heating materials are mounted on the far-infrared light wave drying box body, and carry out even heating and drying under the action of electricity in a far-infrared radiation heat transfer mode. The intelligent sensing control system controls the far-infrared light wave drying box body to operate in the mode of collecting real-time data, analyzing the real-time data and issuing commands. The system and the method based on far-infrared waves have the advantages that crops are dried, drying efficiency is high, the energy saving effect is good, heating speed is high, and the nutritional ingredients of the dried crops cannot be damaged.

Description

technical field [0001] The invention relates to a drying method, in particular to a far-infrared multifunctional drying method. Background technique [0002] Infrared radiation technology is a branch of modern optical technology. The use of infrared radiation to dry crops is a new technology developed in the past 20 years. Its main principle is to dry the object to be dried by means of infrared radiation heat transfer. [0003] Infrared radiation drying crops has the following characteristics: 1) Uniformity; heat transfer is carried out directly in the form of infrared radiation, without passing through any medium, and the heat to be dried is uniform; 2) Good absorption; different substances have different natural vibration frequencies, so The ability to absorb infrared rays is also different. Generally, the moisture content of crops is relatively high, and the wavelength that water is easy to absorb is generally 5-15um, and the wavelength of infrared radiation heat transfe...

AI Technical Summary

Problems solved by technology

[0005] 1. In the vast rural areas of our country, the drying of crops mainly depends on sunlight. In the harvest season of crops, once encountering continuous rainy days, the crops cannot be dried, and the only way to do it is to stack them until the sun is drying. Often in this process, the crops are mildewed or even deteriorated and scrapped;

[0006] 2. So far commonly used drying equipment, such as airflow drying, spray drying, fluidized bed drying, spin flash drying and other drying equipment, the main working principle is mostly in the form of forced convection heat supply. Using these drying equipment for drying, there are mainly The following problems: 1) Long working hours and high energy consumption costs; 2) Due to the heat transfer in the form of forced convection, the heat to be dried is not uniform, and it often occurs that places with more heat have better dryness, and places with low temperatures do not Complete the drying; 3) Due to the long drying time and uneven heating, it is easy to cause the loss or deterioration of important nutrients in the dry matter

In the heating and drying method in which infrared radiation heat transfer is the mainstay and forced convection is supplemented, most of the heat absorbed by the object to be dried is the heat transferred by infrared radiation, so it often happens that the temperature of the object to be dried has far exceeded the set value. The air temperature in the drying equipment has not yet reached this temperature. If this happens, the nutrients to be dried will be lost in light cases, and in severe cases, they will be scorched and scrapped, which will cause great losses.

Images