Drying device based on vortex tube refrigeration technology

Abstract

The invention discloses a drying device based on a vortex tube refrigeration technology. The drying device comprises a compressor, an air storage tank, a condenser, an air supply hole, a drying box, a material rack, a dehumidification heat exchanger, a vortex tube, a first control valve, a second control valve, a third control valve and a fourth control valve, wherein the vortex tube is composed of a vortex tube inlet, a vortex tube hot end and a vortex tube cold end; an outlet of the compressor is connected with an inlet of the air storage tank; the outlet of the air storage tank is connected with the inlet of the vortex tube through the second control valve; the vortex tube hot end is divided into two paths: one path is connected with the air supply hole through the fourth control valve and the other path is connected with the condenser through the third control valve; the outlet of the condenser is connected with the air supply hole; the air supply hole is mounted at the upper part of a side wall of the drying box; the drying box is internally provided with the material rack; the lower part of a side wall of the drying box is connected with the dehumidification heat exchanger; and the vortex tube cold end is connected with the dehumidification heat exchanger through the first control valve. According to the device disclosed by the invention, an equipment structure is simplified and movement parts are reduced; and the operation reliability of equipment is improved.

Description

technical field [0001] The invention relates to a drying device, in particular to a drying device used for dehydration and drying of food, agricultural by-products, medicines, biochemical products and other products. Background technique [0002] In order to facilitate the packaging, transportation, storage, processing and use of materials, free water and bound water in materials are often removed by drying methods. Commonly used drying methods in engineering include mechanical methods, heating methods, and chemical adsorption methods. Among them, heating Drying method is the oldest and most commonly used drying method. Conventional heating and drying devices mainly obtain the required heat energy through electric heating or fuel combustion, and use hot air to transfer heat to the material, so that the moisture in it is vaporized and taken away by the air, so as to achieve the purpose of drying and dehydrating the material. The method not only has low energy utilization rat...

AI Technical Summary

Problems solved by technology

However, due to the thermophysical and safety restrictions of the heat pump cycle working fluid, the drying temperature cannot be too high. For materials that require a higher drying temperature, especially at a temperature above 100°C, the heat pump drying device shows its application limitations. At the same time, due to the heat pump The drying temperature is low, the heat transfer temperature difference is small, the drying time is increased, and the structure of the heat pump drying system is complex and prone to failure

Images