Air heat pump dryer with air return grooves and dehumidification channels

Abstract

The invention discloses an air heat pump dryer with air return grooves and dehumidification channels. The air heat pump dryer with the air return grooves and the dehumidification channels comprises amachine box for generating middle convection air and drying boxes for containing materials, the drying boxes are located on the two sides of the machine box, a convection fan for generating convectionair is arranged in the machine box, the air return grooves are formed in the middles of the side walls, located on the opposite side of the machine box, of the drying boxes, and the upper ends and the lower ends of the side walls, located on the opposite side of the machine box, of the drying boxes are provided with the dehumidification channels for ventilating to the outside. The dehumidification channels for ventilating to the outside are formed, so that the humidity of air at the upper side wall areas and the lower side wall areas of the drying boxes is correspondingly reduced, the dehumidification load in the machine box is reduced, the air return grooves are formed, so that the convection air flows from an air outlet to the drying boxes to be accumulated at the air return grooves, acertain penetrating power is formed, so that the materials which are positioned at the upper ends and the lower ends of the drying boxes undergo penetrating drying correspondingly, and the drying efficiency of the materials which are positioned at the upper ends and the lower ends of the drying boxes is improved.

Description

technical field [0001] The invention relates to an air heat pump drying area, in particular to an air heat pump dryer with a return air groove and a dehumidification channel. Background technique [0002] At present, there are mainly hot air dryers and air heat pump dryers on the market. Compared with hot air dryers, air heat pump dryers will significantly shorten the drying time in the same space and drying items. The power consumption is only less than half of the first one. [0003] In the prior art air heat pump dryer, such as figure 1 As shown, the convective air flows from the air outlet 41 to the drying box 2, and there are the following problems: [0004] 1. Since the impact force of the convective air is offset against the side wall of the drying box 2, the convective air has a large area of ​​dispersal, resulting in weak penetration of the air entering the upper end of the drying box 2 and the lower end of the drying box 2, making the The drying effect of the ma...

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Problems solved by technology

[0004] 1. Since the impact force of the convective air is offset against the side wall of the drying box 2, the convective air scours out a large area, resulting in weak penetration of the air entering the upper end of the drying box 2 and the lower end of the drying box 2, making the The drying effect of the materials at the upper and lower ends of the drying box 2 is poor compared to the material in the middle of the drying box 2. 2 The drying degree of materials in the middle part is quite different;

[0005] 2. At the same time, there is a simple dehumidification of the humid air through the cabinet 1. The dehumidification load in the cabinet 1 is relatively large, resulting in incomplete dehumidification of some air. At the same time, when the temperature in the drying cabinet 2 or the cabinet 1 is higher than the set value, The existing air heat pump dryer cannot quickly discharge the high-temperature gas in the drying box 2 or the cabinet 1, and the cooling speed is slow. The arrows indicate the air flow direction in the box body of the present invention

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