Project Overview
This fast food stir-fry restaurant is located in downtown Guangzhou, specializing in Chinese fast food and made-to-order stir-fry. Multiple cooking stoves are arranged in the back kitchen. During peak business hours, massive cooking fume and waste heat are generated continuously. The original ventilation unit has insufficient air volume and poor cooling performance. The kitchen is compact with concentrated stoves, leading to persistent high temperature that reduces chefs’ work efficiency. Trapped cooking fume may drift into the dining area and cause non-compliance with environmental regulations. According to kitchen size, stove quantity and site constraints, the project adopted the Lanchang water-cooled fresh air unit with air volume of 4100 m³/h for ventilation and cooling renovation.
Equipped with water cooling heat exchange system, the unit delivers continuous cooled fresh air at 4100 cubic meters per hour to dilute cooking fume and dissipate heat from stoves. The unit is made of oil-resistant stainless steel to adapt to high-fume kitchen environments. Multi-layer filters capture grease particles, reduce duct oil buildup and lower potential fire risks. During construction, air duct layout was optimized, and air outlets were arranged to cover main stir-fry workstations. Vibration reduction, air sealing, water piping, electrical testing and airflow calibration were fully implemented.
After operation, kitchen temperature dropped significantly with smooth air circulation. Fume accumulation was effectively controlled to prevent fume spreading to front hall. Compact in size, the unit runs steadily and requires simple maintenance, matching the operation characteristics of small and medium-sized fast food stores in Guangzhou. This case verifies that Lanchang 4100 m³/h water-cooled unit is suitable for compact stir-fry restaurants with moderate stoves, and provides a practical reference for ventilation renovation of similar community fast food shops.
