Impeller, centrifugal fan, heating, ventilation and air-conditioning indoor unit and heating, ventilation and air-conditioning system
By introducing protrusions and grooves into the impeller end ring design, the problems of reduced strength and noise caused by thermal expansion and contraction of plastic impellers are solved, thereby improving structural strength and air outlet efficiency.
WO2026124085A1PCT designated stage Publication Date: 2026-06-18GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- GD MIDEA HEATING & VENTILATING EQUIP CO LTD
- Filing Date
- 2025-11-10
- Publication Date
- 2026-06-18
Smart Images
Figure CN2025133928_18062026_PF_FP_ABST
Abstract
An impeller (100), a centrifugal fan (1000), a heating, ventilation and air-conditioning indoor unit (2100), and a heating, ventilation and air-conditioning system (2000). The impeller (100) comprises an impeller disc (10), a plurality of blades (20) and end rings (30), wherein the plurality of blades (20) are arranged on the impeller disc (10) at intervals in the circumferential direction of the impeller disc (10); each end ring (30) is arranged at the end of the blades (20) away from the impeller disc (10); the end rings (30) protrude from the blades (20) in the radial direction of the impeller (100); and each end ring (30) comprises a base ring (31) and a protruding portion (32) protruding outward from the base ring (31) in the radial direction of the impeller (100), with the protruding portion (32) and the base ring (31) together forming a groove (33).
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