Intelligent hot-air drying control device

Abstract

The invention discloses an intelligent hot-air drying control device which comprises a heat exchange box and a drying chamber, wherein he heat exchange box is separated into multiple spaces, and the drying chamber is connected with the heat exchange box through an air supplying main pipe and a general air return pipe. A heat pump dehumidifying and heating system, a heat pipe return heat exchange system, a hot air circulating system and an intelligent control system are arranged in the heat exchange box. The heat pump dehumidifying and heating system which is composed of a compressor, a drying filter, a dehumidifying evaporator, a throttle valve and a heating condenser. The heat pipe return heat exchange system is composed of a heat pipe evaporator and a heat pipe condenser. The hot air circulating system is composed of a high-pressure refrigerant liquid connecting pipe, a low-pressure refrigerant return gas connecting pipe, a high-pressure refrigerant gas connecting pipe, a liquid refrigerant connecting pipe, a gas refrigerant connecting pipe, an air exhaust regulating valve, a mixed air box, a fresh air regulating valve, a secondary air flow regulating valve and an air blower assembly. The intelligent control system is composed of the a temperature sensor, a humidity sensor, a hot air temperature sensor and a hot air humidity sensor, wherein the temperature sensor, the humidity sensor, the hot air temperature sensor and the hot air humidity sensor are connected in the various systems. The intelligent hot-air drying control device can regulate the temperature and the humidity of drying air automatically and improve the material drying efficiency.

Description

technical field [0001] The invention belongs to the technical field of air drying equipment, and relates to a hot air drying device, in particular to an intelligent hot air drying control device. Background technique [0002] Material drying has a long history, and there are many high-temperature drying equipment, mainly used for drying of mines and chemical materials, and the products of material drying through dew point dehumidification are also very mature, mainly used for drying and dehydration of textiles, food and vegetables; in recent years Heat pump drying products have been used, and its remarkable energy-saving effect has attracted the attention of all parties. For example, the patents disclosed by patent announcement numbers such as CN102410709A, CN102569273A, CN202371971U, CN101694342A, CN201207884 are all heat pump drying devices with different structures. In these existing heat pump drying devices, the heat pump system includes a compressor, an evaporator, a c...

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Problems solved by technology

[0003] (1) As the air temperature rises, the dehumidification effect decreases significantly, resulting in a greatly increased drying time;

[0004] (2) When the air temperature rises to a certain range, the compressor will be overloaded and shut down for protection, which will affect the drying process;

[0005] (3) Whether the dry air in the drying room can be evenly distributed and the flow rate seriously affects the drying quality and drying time

[0006] Therefore, it is impossible to dry or dehydrate food, medicinal materials, tea, fruits and vegetables, grain, feed, etc. that have strict requirements on nutrition, color, germination rate, and freshness preservation. Moreover, these hot air drying devices also have the disadvantage of high energy consumption.

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