The thermostatic dehumidifier uses an evaporator to cool and dehumidify the air, and recovers the condensation heat of the system to make up for the heat lost in the air due to cooling and dehumidification. It is an energy-saving dehumidification method and has been widely used in the dehumidification and drying of grains, wood, etc. and the dehumidification and temperature control of high-humidity spaces.

The thermostatic dehumidifier uses an evaporator to cool and dehumidify the air, and recovers the condensation heat of the system to make up for the heat lost in the air due to cooling and dehumidification. It is an energy-saving dehumidification method and has been widely used in the dehumidification and drying of grains, wood, etc. and the dehumidification and temperature control of high-humidity spaces. The current dehumidification and thermostatic scheme can only be applied to relatively specific environmental requirements, with poor conditioning capabilities and a small scope of application. China has diverse climate types, and most areas have large temperature differences between winter and summer. The heat, cold, and humidity loads change significantly over time. The traditional system cannot meet the actual needs well, and the short use time throughout the year also causes the idleness and waste of equipment. The heat pump thermostatic dehumidifier provides a heat pump thermostatic and humidifying method and equipment that can heat, cool and dehumidify the room at different indoor and outdoor temperatures to meet the indoor temperature and humidity requirements, so as to improve the performance of the dehumidification and thermostatic system and expand the scope of application of the dehumidification and thermostatic system.

When the indoor temperature and humidity are relatively high, and the indoor cooling load is relatively large, the system operates in the cooling and dehumidification mode. At this time, the four-way valve is not energized, the system operates in the cooling mode, the indoor heat exchanger branch is the solenoid valve shut-off, the outdoor heat exchanger is the condenser, and the indoor first heat exchanger is the evaporator. The indoor air of the thermostatic dehumidifier is only cooled and dehumidified by the indoor first heat exchanger, and becomes low-temperature and low-humidity air and returns to the room. In this mode, the constant temperature and humidity machine can also adjust the air volume or water volume of the outdoor heat exchanger to further adjust the cooling capacity and dehumidification capacity. The cooling capacity and dehumidification capacity both increase with the increase of the air volume or water volume of the outdoor heat exchanger.