Abstract: An automatic constant-temperature dehumidification device, comprising at least two dehumidification heat pump assemblies having two refrigerant modules and an air module. The refrigerant module comprises a primary refrigerating module and a secondary refrigerating module, the primary refrigerating module and the secondary refrigerating module each comprising a condenser, an evaporator and a compressor. An air inlet pipe of the air module is connected to a hot side of a heat regenerator, the hot side of the heat regenerator is connected to the evaporators through ventilation pipes, the evaporators are connected to a cold side of the heat regenerator through ventilation pipes, and the cold side of the heat regenerator is connected to one of the condensers through a ventilation pipe.

Abstract: A temperature-adjustable four-effect dehumidifying and drying system, having at least two sets of dehumidification heat pump assemblies and a set of auxiliary heat exchange assembly, wherein the dehumidification heat pump assemblies have at least two refrigerant modules and an air module, the auxiliary heat exchange assembly is formed by connecting at least two heat exchangers (4, 12) in series by means of a circulation pipeline, and the circulation pipeline is provided with a refrigerant inlet and a refrigerant outlet.

Abstract: An automatic constant-temperature dehumidification device, comprising at least two dehumidification heat pump assemblies having two refrigerant modules and an air module. The refrigerant module comprises a primary refrigerating module and a secondary refrigerating module, the primary refrigerating module and the secondary refrigerating module each comprising a condenser, an evaporator and a compressor. An air inlet pipe of the air module is connected to a hot side of a heat regenerator, the hot side of the heat regenerator is connected to the evaporators through ventilation pipes, the evaporators are connected to a cold side of the heat regenerator through ventilation pipes, and the cold side of the heat regenerator is connected to one of the condensers through a ventilation pipe.

Abstract: A temperature-adjustable four-effect dehumidifying and drying system, having at least two sets of dehumidification heat pump assemblies and a set of auxiliary heat exchange assembly, wherein the dehumidification heat pump assemblies have at least two refrigerant modules and an air module, the auxiliary heat exchange assembly is formed by connecting at least two heat exchangers (4, 12) in series by means of a circulation pipeline, and the circulation pipeline is provided with a refrigerant inlet and a refrigerant outlet.