Rapidly-heating heat recovery type temperature-adjusting heat pump drying device and operation method thereof

Abstract

The invention provides a rapidly-heating heat recovery type temperature-adjusting heat pump drying device and an operation method thereof. The rapidly-heating heat recovery type temperature-adjusting heat pump drying device comprises a heat pump system, an air channel, a sensible heat recoverer, a circulating centrifugal fan and an air filter, wherein the sensible heat recoverer, the circulating centrifugal fan and the air filter are arranged in the air channel. The heat pump system comprises a compressor, an outdoor multifunctional heat exchanger, a condenser and a dehumidification evaporator, wherein the outdoor multifunctional heat exchanger is arranged outside the air channel and provided with an axial flow fan, and the condenser and the dehumidification evaporator are arranged in the air channel. According to the rapidly-heating heat recovery type temperature-adjusting heat pump drying device, the outdoor multifunctional heat exchanger is arranged, the flowing direction and flow distribution of a refrigerant are changed through a control valve, and thus the closed-type drying heat pump device can rapidly conduct heating at the low temperature and rapidly cool at the high temperature, so that the different drying room temperature requirements are met, and the refrigeration dehumidification and drying process is more sustainable, stable and reliable and saves more energy.

Description

technical field [0001] The invention relates to a drying device, in particular to a heat recovery type temperature-regulating heat pump drying device and an operating method thereof. Background technique [0002] At present, drying devices are generally based on direct electric heating and heat pump systems. The device with electric heating as the core can heat up quickly by directly heating the air, and the working time is shorter, but the energy consumption is higher. The heat pump system as the core device uses heat transfer to heat the air, although it consumes less energy, but the working temperature rises slowly at low temperature, the working cycle is long, and the evaporator has the risk of frosting, which affects the working stability; when the temperature is high, the heat pump is frequently started stop, the temperature fluctuates greatly, the drying process is discontinuous, and the energy consumption is increased. Contents of the invention [0003] Purpose o...

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Problems solved by technology

The heat pump system as the core device uses heat transfer to heat the air, although it consumes less energy, but the working temperature rises slowly at low temperature, the working cycle is long, and the evaporator has the risk of

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