A bottom-supply and top-return vertical air supply type heat pump constant temperature equipment

Abstract

The present invention discloses a lower air supply and upper air return vertical air returning heat pump constant temperature device including an exterior-protected structure, a variable cross-section air supply static pressure space, a drying device, a variable cross-section air return static pressure space, and an air handling device. An air supply pore plate is arranged at the top of the exterior-protected structure. A drying zone is formed by a horizontally arranged air supply non-uniform pore plate and an air return non-uniform pore plate of the space between the air supply plate and an air return plate. Each layer of an object placing plate arranged in the drying zone is provided with a set of air supply holes and a set of air return holes. The heat pump constant temperature device employs drying surfaces to vertically supply air to improve drying airflow distribution, ensures uniform and stable airflow on the drying surfaces, increases drying efficiency, reduces energy consumption, and promotes air circulation.

Description

Technical field [0001] The invention belongs to the technical field of building environment and equipment engineering, and relates to an air circulation processing system, in particular to a vertical air supply type heat pump dry air circulation processing system. Background technique [0002] As a large agricultural country in my country, agricultural energy conservation is of great significance in energy conservation and emission reduction strategies. Many agricultural and sideline products (including edible fungi) are rich in moisture (generally with a moisture content of more than 80%). They must be dried before they are stored, transported and processed into food or other daily necessities. Drying operations are generally Consume a lot of energy. Hot air drying technology is the mainstream technology in the deep processing industry of edible fungi, and its production efficiency directly affects the effect of agricultural energy saving in this field. Therefore, it is partic...

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Problems solved by technology

However, the static pressure space of the air supply and return air is small, and the parallel air supply method in the baking workshop cannot fully achieve the effect of uniform and stable air flow organization, and the drying effect of edible fungi is not good.

The air supply port adopts constant air volume, and the same air volume is delivered to different drying spaces, which not only causes waste, but also affects the drying effect of edible fungi

[0004] Publication No. 104082397A is an invention patent application for an energy recovery type edible fungus drying device (see figure 2 ) The air supply static pressure space adopts a variable cross-section design, and adopts a parallel air supply structure set by double-hole plates, but the variable cross-section adopts a top-down penetrating design, which has a greater impact on the lower part, thereby affecting the wind speed and air volume in the drying area , reducing the drying quality in the lower part of the drying zone

The air supply and return air orifices adopt uniform slit orifice plates, which have a great influence on the airflow direction, resulting in differences in air temperature and wind speed in the horizontal direction in the drying area, and the drying effect is not good

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