Air source high-temperature heat pump dehumidification roasting device

Abstract

The invention provides an air source high-temperature heat pump dehumidification roasting device, comprising a drying room, a heating room, a heat energy recovery and dehumidification device, an air source high-temperature heat pump heating device, and a circulating fan mounted in the heating room; the drying room is provided with an air inlet and a return air inlet, the air inlet of the drying room is communicated with the drying room, and the circulating fan is arranged opposite to the air inlet of the drying room; a moisture inlet of the heat energy recovery and dehumidification device is communicated with the return air inlet of the drying room while a heat energy recovery port thereof is communicated with the heating room; and a heat supply end of the air source high-temperature heat pump heating roasting device is mounted in the heating room. The air source high-temperature heat pump dehumidification roasting device is scientific in design, high in heat utilization rate, excellent in energy-saving and consumption reducing property and high in drying quality.

Description

technical field [0001] The invention relates to a material baking or drying equipment, in particular to an air source high temperature heat pump dehumidification baking equipment. Background technique [0002] At present, in the drying field of tobacco and agricultural products in my country, coal-fired drying methods are generally used, and there are also a small number of drying methods using gas, straw briquette fuel, etc. as fuels; these drying methods generally have low thermal efficiency and the unit High energy costs, high emissions of dust and S-containing compounds, serious environmental pollution, complex operating procedures, high labor intensity, poor temperature and humidity control accuracy, and difficult to guarantee baking quality. [0003] In the prior art, some baking equipment uses air source heat pumps for heating. However, the thermal efficiency of air source heat pumps is low, and its maximum heating load is difficult to meet the temperature rise require...

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Problems solved by technology

[0002] At present, in the drying field of tobacco and agricultural products in my country, coal-fired drying methods are generally used, and there are also a small number of drying methods using gas, straw briquette fuel, etc. as fuels; these drying methods generally have low thermal efficiency and the unit High energy consumption costs, high emissions of dust and S-containing compounds, serious environmental pollution, complex operating procedures, high labor intensity, poor temperature and humidity control accuracy, and difficult to guarantee baking quality

[0003] In the prior art, some baking equipment uses air source heat pumps for heating. However, the thermal efficiency of air source heat pumps is low, and its maximum heating load is difficult to meet the temperature rise requirements of high temperatures above 60°C in the later stage of drying. This requires baking equipment A large number of low-energy-efficiency electric heating tubes are equipped for auxiliary heating, which increases the energy consumption of the baking equipment, increases the operating cost, and lowers the energy utilization rate, resulting in a great waste of resources, which is not suitable for promotion

[0004] During the drying process of materials, it is necessary to dehumidify, but it will take away a lot of heat at the same time. According to statistics, when dehumidifying, the heat loss is as high as about 44%, the heat energy loss is large, and the thermal efficiency is low; in the drying process of tobacco and fruit In order to meet the needs of dehumidification, a large amount of external fresh air must be added first, and then the hot and humid air in the drying room is discharged. With the discharge of hot and humid air in the drying room, while discharging a large amount of moisture and heat, the tobacco in the drying room Or the beneficial substances such as the aroma of the fruit volatilized into the air will also be discharged, which will have a certain impact on the aroma and taste of the roasted tobacco leaves or fruit

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