Popula Group Applies for Patent for “High Static Pressure Low Noise Multi-Blade Centrifugal Fan”

Date: August 1, 2025 (publication date)

Details: The National Intellectual Property Administration disclosed that Foshan Nanhai Popula Ventilation Fan Co., Ltd. applied for a patent titled “A High Static Pressure Low Noise Multi-Blade Centrifugal Fan,” with publication number CN120402396A and application date of July 2025-. The patent abstract indicates that the invention relates to the field of centrifugal fans, including a volute casing, an impeller arranged in the inner cavity of the volute, and a current collector. The volute’s profile is an unequal-spaced square spiral, and the volute tongue is designed as an outwardly expanding structure with an expansion angle of 26.6°-27.4°. This technology achieves high efficiency, high static pressure, and low noise effects.