Application Scenario

Supermarket and convenience store display cabinets (refrigerated/frozen)

Scenario description:

Open and glass-door vertical/horizontal refrigerators (0 to 5°C) and freezers (-18°C to -23°C) are used for displaying and selling food, beverages, etc. The compressor is usually integrated at the bottom of the cabinet or centrally arranged in an equipment room.

Detailed description:

The working principle is similar to that of a household refrigerator but must handle significantly higher thermal loads due to frequent door opening, hot air intrusion, and heat from lighting, etc. Consequently, the compressor requires a higher cooling capacity and is built with more robust performance to maintain a low temperature environment in the cabinet, especially in the hot summer store environment.

Key requirements：

High temperature environment operation capability:
It must be able to operate reliably and reach the required temperature at an ambient temperature of 35°C or even higher.

High energy efficiency:
With commercial establishments facing high electricity costs and extended equipment runtime, energy efficiency is a paramount consideration.

Durability and low maintenance:
The equipment must withstand heavy loads and continuous operation (potentially 24/7), while maintaining low maintenance costs.

Stable temperature control:
The system must consistently maintain a safe temperature zone to ensure food safety.

Low noise (for specific scenarios):
Noise control is critical in environments where customer experience is a priority.

Common compressor types:

Scroll compressor: High efficiency, low noise, low vibration, and good reliability. Widely used in medium and large cabinets;
Semi-hermetic reciprocating compressor: Ideal for large-power applications; Rotary compressor: Typically used in small cabinets.

Technical difficulties:

Solving heat dissipation problems under high ambient temperature;
Handling heat load fluctuations caused by frequent door opening;
Achieving the best balance between energy efficiency, cost, and reliability;
Addressing the matching and oil return issues of multiple evaporators in centralized systems.