Spiral-flow type heat pump dryer

Abstract

The invention belongs to the technical field of dryers, and particularly relates to a spiral-flow type heat pump dryer capable of being used in the fields of food processing, wood drying, cultural relic protection and the like. The spiral-flow type heat pump dryer is mainly characterized in that a spiral-flow generation device is arranged in a drying chamber; an air inlet of the drying chamber is formed in the bottom center of the drying chamber, and communicated with the bottom center of the spiral-flow generation device; an air outlet of the drying chamber is formed at the top center of the drying chamber; a control device is arranged, and comprises an inductor arranged in the drying chamber; the inductor is connected with a controller arranged outside the drying chamber by a signal transmission channel; and the controller is connected with the spiral-flow generation device and a frequency conversion fan by the signal transmission channel respectively. The spiral-flow type heat pump dryer can effectively improve air distribution in the drying chamber; an air flow can be distributed uniformly; an air speed in the drying chamber is increased greatly; and the drying efficiency and a drying effect of the heat pump dryer can be improved.

Description

technical field [0001] The invention belongs to the technical field of dryers, and in particular relates to a swirl heat pump dryer which can be used in the fields of food processing, wood drying, cultural relics protection and the like. Background technique [0002] Because the heat pump dryer can effectively recover and utilize the heat in the air, reduce the direct discharge of circulating air, and have obvious economic and social benefits in terms of energy saving and emission reduction, the application of heat pump dryers is becoming more and more extensive. However, the heat pump dryer still has the problem of low energy utilization efficiency. At present, the improvement of the drying effect of the heat pump dryer is mostly carried out from the transformation of the structural components of the system (such as: the structural optimization of the evaporator and condenser, the transformation of the air treatment channel, etc.), the selection of the heat pump cycle worki...

AI Technical Summary

Problems solved by technology

In this way, there are problems such as uneven distribution of air temperature in the drying room, low air velocity and uneven distribution.

This will inevitably lead to unsatisfactory drying effect of the heat pump dryer

At the same time, due to the low air speed in the drying chamber, the heat and mass transfer efficiency between the air in the drying chamber and the material to be dried is low, resulting in a relatively long drying time, so the drying efficiency is low and the energy consumption is large

In addition, due to the uneven temperature distribution in the drying room, it will also affect the drying quality of the items.

If some dust and toxic and harmful substances will be produced during the drying process, due to the low air velocity in the drying room of the traditional heat pump dryer, the ability to carry and control dust and harmful substances is very low, and these dust and toxic and harmful substances will be deposited in the On the drying material and in the drying room, it is difficult to achieve effective capture and centralized treatment

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