The working principle of heat pump drying hot air blower is mainly based on the reverse Carnot principle and the thermodynamic cycle process. Its core components include evaporator, compressor, condenser and expansion valve, and also involve facilities such as drying room, fan and air duct.
The detailed steps of the working principle are as follows:
Heat absorption stage: The refrigerant evaporates in the evaporator, absorbs low-temperature and low-pressure heat from the surrounding environment, and absorbs moisture from the air. In this step, the evaporator not only plays a role in heat exchange, but also realizes the preliminary dehumidification function.
Compression process: The refrigerant that absorbs heat and moisture is pressurized by the compressor to increase its temperature and pressure. Through the action of the compressor, the temperature and pressure of the refrigerant are significantly increased, providing sufficient energy for subsequent heat release.
Heat release stage: The high-temperature and high-pressure refrigerant enters the condenser and releases high-temperature heat. The condenser is designed with heat exchange tubes. When the refrigerant flows in the heat exchange tubes, it transfers heat to the air in the drying room. In this way, the air temperature in the drying room gradually rises, forming hot air, which vaporizes and evaporates the moisture in the material to achieve material drying. At the same time, the condenser also plays the role of condensing the refrigerant, changing the refrigerant from gas to liquid, preparing for subsequent recycling.
Refrigerant cycle: High-temperature and high-pressure refrigerant rapidly expands through the throttle valve and becomes a low-temperature and low-pressure liquid. The throttle valve adjusts the flow and pressure of the refrigerant to reduce pressure and temperature, preparing for the heat absorption stage of the next cycle. The low-temperature and low-pressure refrigerant enters the evaporator again, repeating the above process to form a continuous heat transfer cycle.
