The double‑layer water‑transported fume hood features two concentric high‑pressure water curtains around the intake, combining hydraulic scrubbing with air‑water separation to capture ≥ 99% of grease and oil mist, preventing buildup. Its all‑metal construction and intelligent water‑level control enable continuous self‑cleaning for maintenance‑free operation. With low resistance and high airflow, it delivers energy‑efficient, high‑performance extraction—ideal for large commercial kitchens and central kitchen facilities.