Cross-flow fan with variable outlet mounting angle and cross-flow fan

• Main Authors: WANG HANBO, YE TAO, QIN WANXIANG, QIN LIUTING, LIANG YANHAO
• Format: Patent
• Language: Chinese; English
• Published: 06.06.2023
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The utility model discloses a cross-flow fan with a variable outlet mounting angle and a cross-flow fan, the cross-flow fan with the variable outlet mounting angle comprises a middle plate, a plurality of cross-flow blades and a plurality of cross-flow blades, one end of each blade is fixedly connected to the middle plate, and the multiple blades are circumferentially distributed around the axis of the middle plate; an outlet mounting angle in the direction from one end, connected with the middle plate, of the blade to one end, far away from the middle plate, of the blade is gradually increased or gradually reduced; by changing the outlet mounting angle, the impact acting force of the fan outlet airflow on the volute is changed, the airflow impact force in the axial direction of the fan is differentiated, the superposition effect of the noise peak value of the cross-flow fan blade in the axial direction is weakened, the blade tip vortex is reduced, the rotation noise peak value is effectively reduced, and the