Ceiling air cooler-Dual Discharge Air Cooler

　　The ceiling air cooler is a cooling device specially used for cold storage, usually called an air cooler. It is mainly used in various cold storages, such as civil cold storage or combined cold storage, and is suitable for different storage temperature environments. The ceiling air cooler has a variety of models, such as DL, DD and DJ, which are suitable for cold storages with different temperature ranges.

　　Scope of application and characteristics

　　DL type: Suitable for cold storage with a storage temperature of about 0℃, such as a storage for fresh eggs or vegetables.

　　DD type: Suitable for cold storage with a storage temperature of about -18℃.

　　DJ type: Suitable for quick-freezing cold storage, the temperature is -25℃ or lower, mainly used for low-temperature freezing of meat, fish, frozen food, medicine, medicinal materials, chemical raw materials and other items.

　　Structure and working principle

　　The ceiling air cooler is mainly composed of five key components, including refrigeration heat transfer pipe trough, axial flow fan, liquid distributor, frost containment equipment and water tray. After the expansion valve throttles, the high-pressure and normal-temperature liquid refrigerant enters the liquid distributor for uniform liquid distribution, and then enters the heat transfer pipe groove for vaporization and heat absorption. The axial flow fan forces the gas of the air cooler to circulate with the gas in the cold storage for heat convection to achieve the purpose of refrigeration. Since the surface temperature of the cold storage evaporator is lower than 0℃, the surface will frost, which will affect the heat transfer effect and wind speed, so regular defrosting is required.

　　Maintenance and care

　　In order to ensure the good heat transfer characteristics of the ceiling air cooler, regular defrosting is required. Common defrosting methods include electric heating defrosting, which has the advantages of complete defrosting and automatic control, and is suitable for fresh-keeping warehouses, medicine cold storages, vegetable and fruit warehouses, etc. In addition, the surface treatment of the ceiling air cooler adopts phosphating electrostatic spraying process, which has good anti-rust effect and short defrosting time.