Tunnel Conveyor Type Microwave Herb Drying Oven

Shandong Leader Machinery Co.,ltd. are a professional manufacturer of Tunnel Conveyor Type Microwave Herb Drying Oven for 20 years. Our main products includes Block making machine, concrete mixer, dry mortar mixer, charcoal machine, Coal briquette machine, Wood Crusher, Oil press machine, Biomass briquette machine, food machinery, etc.
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Tunnel Conveyor Type Microwave Herb Drying Oven

Instructions of tunnel herbs drying oven:

Drying is due to food and water vapor partial pressure inside and outside different process in the internal moisture to the surrounding air. Microwave dielectric heating and traditional heating drying equipment. When moisture content is above 50%, as the moisture content decreased, dielectric constant and dielectric loss factor will be reduced, especially at high temperature.

Moisture content is below 30%, the microwave penetration depth will increase significantly. Due to uneven temperature distribution and difficult to control the product in the terminal temperature of low moisture content components, microwave heating equipment will produce adverse effect on product quality.

The reason that choose tunnel herbs drying oven:

In the hot air drying, effective operating temperature range in the 60-90 °C, dry fruits and vegetables need 15 h time. In the process of the constant speed drying, the drying rate is determined by the energy transfer to the speed of food wet surface. Due to the evaporative cooling, the temperature of the product to lower than the later in the drying process. Once the surface is dry, from the inside to the surface of the mass transfer rate to keep the surface of the water permeability.

In the falling rate drying stage, diffusion rate determines the drying rate, and decrease with the content of water molecules. Due to the material surface evaporation cooling effect is reduced, resulting in surface temperature. Under the hot air drying temperature, volatile flavour compounds of group branch loss, structural changes, such as: hardening inhibits after drying, and drying time was prolonged, thereby resulting in the destruction of vitamins, color and flavor of the chemical and enzymatic reaction.

Microwave drying, microwave for material inside and outside the heating process at the same time. Materials due to the internal and external temperature at the same time, and the material surface is direct contact with air, so the internal temperature of the material will be slightly higher than the surface temperature. At the same time the moisture inside the material by the external to internal migration, the material surface, evaporation and air.
Thus, microwave drying, the drying speed is higher than other drying methods

Reference Technical Parameters:

NOTE:We can specially design the machine according to your production's features.

machinery equipment Co.,Ltd.

Tunnel Conveyor Type Microwave Herb Drying Oven, often colloquially shortened to microwave, is a kitchen appliance that heats food by bombarding it with electromagnetic radiation in the microwave dryer spectrum causing polarized molecules in the food to rotate and build up thermal energy in a process known as dielectric heating.Tunnel Conveyor Type Microwave Herb Drying Oven heat foods quickly and efficiently because excitation is fairly uniform in the outer 25–38 mm of a dense (high water content) food item; food is more evenly heated throughout (except in thick, dense objects) than generally occurs in other cooking techniques. Tunnel Conveyor Type Microwave Herb Drying Oven can Sterilize the food during the drying process by heat and the influence on the protein, RNA, DNA, cell membrane and so on.

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If you have any demand about microwave drying equipment and edible oil refining equipment, pls feel free contact us any time.

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Shandong Leader Machinery Co.,Ltd.
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Address: No. 225, Huangqiao Village, Beiyuan, Tianqiao District, Jinan, Shandong, China

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——————————————————————Wendy Yao Director