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AssigneeShunde Polytechnic
InventorsYansheng Xu, Zhijiang Wu, Da Feng, Huaxing Liu, Xiyu Li, Dongming Li
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A closed variable-frequency heat pump drying device with a heat regenerator includes a variable-frequency compressor, a condenser, a throttling valve, an evaporator, a heat regenerator, a three-way valve, a variable-frequency fan, an air inlet temperature sensor, an air inlet humidity sensor, a drying bin, an air outlet temperature sensor, an air outlet humidity sensor and a controller. The controller regulates frequency of the variable-frequency compressor by comparing magnitudes of actual and set air inlet temperatures; a ratio of a straight-through air volume to a regenerated air volume of the three-way valve by comparing magnitudes of actual and set air inlet humidity; and frequency of the variable-frequency fan by comparing magnitudes of actual and set air humidity difference and magnitudes of actual and set air temperature difference of medium air entering and exiting the drying bin.
A closed variable-frequency heat pump drying device with a heat regenerator, comprising a variable-frequency compressor (1), a condenser (2), a throttling valve (3), an evaporator (4), a heat regenerator (5), a three-way valve (6), a variable-frequency fan (7), an air inlet temperature sensor (8), an air inlet humidity sensor (9), a drying bin (10), an air outlet temperature sensor (11), an air outlet humidity sensor (12) and a controller (13), wherein
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