Gas jet impact drying and infrared radiation drying combined method and device

Abstract

The invention belongs to the technical field of agricultural product machining, and particularly relates to a gas jet impact drying and infrared radiation drying combined method and device. The devicecomprises a material plate (4), a material (8), a box body (15), a box body support (18), an industrial control touch integrated machine (1), a temperature and humidity sensor (2), a cross flow fan (3), a temperature sensor PT100 (5), a spraying nozzle (6), an infrared heating pipe (7), a one-way electromagnetic valve (9), an air inlet pipeline (10), an electric heating pipe (11), an air blower (12), an arc-shaped flow guide plate (13), an air return pipeline (14), a patch type temperature sensor (16), a sensor support (17) and a dehumidifying draught fan (19). The industrial control touch integrated machine obtains the central temperature of the material through the patch type temperature sensor (16), obtains the temperature and relative humidity data in the box body through the temperature and humidity sensor, compares the data with set values and controls corresponding hardware to make an adjustment, and the whole device has the advantages of being high in automation degree, low inlabor intensity and the like.

Description

technical field [0001] The invention belongs to the technical field of agricultural product processing, and in particular relates to a method and device for gas jet impact drying combined with infrared radiation drying. Background technique [0002] The "infrared convection combined drying device" disclosed in Chinese Patent No. CN204718333U adopts the method of combined hot air and infrared drying, but there is a problem of poor heating uniformity of materials in the above-mentioned patented heating equipment, which leads to the problem of local overheating of heated materials. [0003] In addition, infrared radiation can penetrate the surface of the material and heat the material from the inside, which has the advantages of high heat flux density, strong heating capacity, and fast heating speed, but the infrared penetration ability is limited, and the absorption of infrared radiation energy is easily affected by water vapor. In the traditional infrared combined convection ...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a gas jet impingement drying combined with infrared radiation drying device to solve the problem that the existing gas jet impingement drying technology is easy to crust on the surface of the material, has poor applicability, and is difficult to realize the drying of block or thick sheet materials; The infrared penetration ability is limited, and the absorption of infrared radiation energy is easily affected by water vapor. In the traditional infrared combined convection drying, if the convection speed is too fast, the material will cool down. If the convection speed is too slow, too much water vapor will be retained in the drying chamber, which will cause Weaken the absorption of infrared radiation energy by materials, which is not conducive to drying and other problems

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