1. Refrigerant circulation system
The liquid refrigerant in the evaporator absorbs heat from the air (the air is cooled and dehumidified) and begins to evaporate. Eventually, a certain temperature difference is formed between the refrigerant and the air, and the liquid refrigerant completely evaporates into a gaseous state. It is then sucked in and compressed by the compressor (pressure and temperature increase), and the gaseous refrigerant absorbs heat through the condenser (air-cooled/water-cooled) and condenses into a liquid. After being throttled by an expansion valve (or capillary tube), it becomes a low-temperature and low-pressure refrigerant that enters the evaporator, completing the refrigerant circulation process.
2. Air ring system
The fan is responsible for inhaling air from the return air outlet. The air passes through the evaporator (for cooling and dehumidification), humidifier, and electric heater (for heating) before being sent to the user’s desired space through the air supply outlet. The air sent out mixes with the air in the space and returns to the return air outlet.
3. Electrical self-control system
The electrical self-control system includes a power supply part and an automatic control part.
(1) The power supply supplies power to compressors, fans, electric heaters, humidifiers, etc. through contactors;
(2) The automatic control is divided into temperature and humidity control, as well as fault protection.
1) Temperature and humidity control is achieved by comparing the temperature and humidity of the return air with the user set temperature and humidity through a temperature and humidity controller, automatically running components such as compressors (cooling, dehumidification), humidifiers, electric heating (heating), etc., to achieve automatic control of constant temperature and humidity
2) Fault protection control is achieved through the combination of pressure protection, delay devices, relays, overload protection, etc., to control the fault protection of components such as compressors, fans, humidifiers, etc