Electric heating type drying box

Abstract

The invention discloses an electric heating type drying box. The electric heating type drying box comprises a drying box, heating devices, a bracket and a drainage valve. The drainage valve is mounted in a drainage port on the outer surface of the drying box. The heating devices comprise top plates, base plates, side plates, electric heating pipes, fixed strips and heat conducting working mediums. The heating devices are fixedly mounted on a box body of the drying box through brackets. The electric heating pipes provide a heat source to the liquid-state heat conducting working mediums; the heat conducting working mediums transfer heat onto the top plates and the base plates of the heating devices through gas-liquid phase change; the heating devices on the upper and lower layers synchronously heat materials in trays up and down; through balanced temperature at four angles and the peripheries of the top plates and the base plates of the heating devices, the water drying uniformity of the materials is guaranteed, and the transfer drying of the materials is performed; and through up-down synchronous heating by the heating devices, the heat conduction and exchange speed of heat energy is accelerated. The electric heating type drying box flexibly selects vacuum low-temperature drying or air convection drying to improve the material drying efficiency and to optimize the material drying effect.

Description

Technical field [0001] The invention relates to a drying oven, in particular to an electric heating type drying oven. Background technique [0002] At present, the main heating method of drying ovens and drying rooms on the market is to pass a flowing heat transfer medium into the heating plate. The heat transfer medium in the heating plate transfers heat to the material in the tray through the heating plate, and the material absorbs heat to evaporate the moisture. After gasification, water vapor is evacuated by the exhaust device. When the heat transfer medium (water, heat transfer oil) in the heating plate of the drying box flows and conducts heat in the heating plate for a long time, scale and grease will form on the plate inside the heating plate. The internal structure of the heating plate is complicated, and the plate inside the heating plate The scale and grease on the surface are not easy to clean and remove. The heating plate with scale and grease will affect the heat c...

AI Technical Summary

Problems solved by technology

When the heat transfer medium (water, heat transfer oil) in the heating plate of the drying oven flows and conducts heat in the heating plate for a long time, scale and oil will form on the plate inside the heating plate. The internal structure of the heating plate is complicated, and the plate inside the heating plate The scale and oil on the surface is not easy to clean and descale, and the heating plate with scale and oil will affect the conduction and heat transfer of heat energy

Due to the flow direction of the heat transfer medium in the heating plate, the bottom plate of the heating plate and the four corners of the bottom plate and the surrounding temperature are uneven, and the uneven temperature of the bottom plate and the four corners of the bottom plate and the surrounding area of ​​the heating plate cause uneven drying of the material

The hot air outside the drying box and the drying room directly dries the materials, which may cause the hidden danger of the materials being polluted

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