In the selection of commercial refrigerators, direct cooling and air cooling are two mainstream technical routes, each with its own characteristics and suitable for different scenarios.
Direct cooling refrigerators adopt the principle of natural convection. The refrigerant flows directly in the evaporator pipe to cool down, and the cabinet is cooled by the natural circulation of hot and cold air. This structure is simple and reliable, with low energy consumption and relatively affordable price. However, due to the uneven temperature distribution, local frost may occur, and manual defrosting is required regularly. Direct cooling is more suitable for small merchants with low requirements for temperature uniformity and limited budget.
Air-cooled refrigerators use fans to force cold air to circulate, making the temperature in the cabinet more uniform, and have automatic defrosting function, which greatly reduces maintenance work. This technology can quickly restore the temperature in the cabinet after opening the door, and the preservation effect is more stable. However, the air-cooling structure is relatively complex, the energy consumption is slightly higher, the price is more expensive, and the fan operation will produce slight noise. Air cooling is more suitable for medium and large supermarkets, convenience stores and other places with high requirements for freshness and large passenger flow.
When making a choice, you need to consider the usage scenario, budget and maintenance cost: small stores can give priority to the economical direct cooling type; while for commercial environments with high preservation requirements and large customer flow, the stability and convenience advantages of the air cooling type are more obvious.