Solar energy continuous heat supply type drying apparatus

Abstract

The invention relates to a solar continuous heat supply type drying device, which comprises a drying chamber. A materiel frame is arranged in the drying chamber, and a drying chamber air inlet interface is arranged below the drying chamber; the drying device also comprises a blower, a control valve, and an obliquely-arranged V-shaped plate heat collector on which an insulation water tank is arranged; an air inlet end of the blower is communicated with the atmosphere, an air outlet end of the blower is connected with an inlet of a control valve, a first outlet of the control valve is connectedwith an air inlet of the V-shaped plate heat collector, a communicated hot air passage is arranged in the V-shaped plate heat collector, and an air outlet of the heat collector is connected with an air inlet interface of the drying chamber; and a second outlet of the control valve is connected with the air inlet interface of the drying chamber through a coiled air pipe which is arranged in the insulation water tank connected with hot water pipes in the V-shaped plate heat collector in turn through water pipes, and the insulation water tank and the hot water pipes form a circulating water passage. The drying device can continuously supply heat, and has the advantages of low cost, simple structure and high heat utilization efficiency.

Description

technical field [0001] The invention belongs to the field of crop processing machinery, in particular to equipment for drying food crops by using solar energy. Background technique [0002] In the industry of food drying, especially the drying of Cantonese-style dried fruits, natural sun drying and greenhouse drying are mainly used in China. The time required for natural sun drying is too long. Greenhouse drying can shorten the drying time, but it also cannot To achieve continuous operation, foreign related solar food drying equipment has natural convection and forced convection drying equipment, but there are common problems that continuous drying cannot be achieved and waste gas is not recycled, resulting in waste of heat energy. [0003] In the domestic prior art about food drying equipment, Chinese Invention Patent Publication No. CN101086423A, an additional energy drying device for solar drying equipment, discloses a drying equipment using solar energy. An electric hea...

AI Technical Summary

Problems solved by technology

The technical solution needs to set up two kinds of heat collectors, the plate heat collector and the heat collector, the cost is high and the structure is complicated; in addition, the function of waste heat recovery is not considered; in terms of structure, the volume of the drying chamber is affected by the height of the heat collector Restrictions, not conducive to the increase of drying room space

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