CN-116255361-B - Fan wheel and heat radiation fan with same

CN116255361BCN 116255361 BCN116255361 BCN 116255361BCN-116255361-B

Abstract

The invention provides a fan wheel and a cooling fan with the fan wheel, which are used for solving the problem that the air quantity is difficult to lift due to the fact that vortex is easy to form when the existing fan wheel rotates. The wind turbine blade comprises a rotating shaft, a hub and a plurality of blades, wherein the blades are respectively provided with a proximal shaft end and a distal shaft end, the proximal shaft end is connected with the hub, the blades are provided with a bifurcation structure adjacent to the distal shaft end, the bifurcation structure is provided with a main wing and a winglet, the winglet is provided with a wind inlet side and a diversion side, the winglet is provided with a wind inlet first endpoint on the wind inlet side, the winglet is provided with a diversion first endpoint on the diversion side, the wind inlet first endpoint and the diversion first endpoint are both connected with the main wing, a first radial distance is arranged between the wind inlet first endpoint and the shaft center, a second radial distance is arranged between the diversion first endpoint and the shaft center, and the second radial distance is the same as the first radial distance.

Inventors

LIU ZUNCHEN

Assignees

建准电机工业股份有限公司

Dates

Publication Date: 20260508
Application Date: 20211217
Priority Date: 20211209

Claims (6)

1. A fan wheel for an axial flow fan, comprising: A rotating shaft having an axis; A hub connected to the shaft, and The fan blades are arranged around the hub, the fan blades are respectively provided with a proximal shaft end and a distal shaft end, the proximal shaft end is connected with the hub, the fan blades are provided with a bifurcation structure adjacent to the distal shaft end, the bifurcation structure is provided with a main wing and a winglet, the winglet is provided with a wind inlet side and a diversion side, the winglet is provided with a wind inlet first end point on the wind inlet side, the winglet is provided with a wind guiding first end point on the diversion side, the wind inlet first end point and the wind guiding first end point are both connected with the main wing, a first radial distance is arranged between the wind inlet first end point and the shaft center, a second radial distance is arranged between the wind guiding first end point and the shaft center, the second radial distance is the same as the first radial distance, the winglet is provided with a wind inlet second end point on the wind inlet side, the wind inlet second end point and the wind guiding second end point are far away from the main wing, the wind inlet first end point and the wind inlet first end point are connected with the shaft center, an included angle formed between the wind inlet first end point and the wind inlet first end point is equal to or larger than or equal to the first axial distance, and the distance between the wind inlet first end point and the first axial end point is equal to or larger than the first axial distance.
2. The impeller of claim 1, wherein the impeller has a maximum radius, and the ratio of the first radial distance to the maximum radius is 0.85-0.98.
3. The fan wheel of claim 1, wherein the included angle is greater than or equal to 30 degrees and less than or equal to 89 degrees.
4. The fan wheel of claim 1, wherein the included angle is 60 degrees.
5. The fan wheel of claim 1 wherein the fan wheel has a maximum radius, the winglet having a maximum radial distance from the hub, the maximum radial distance being less than or equal to the maximum radius.
6. A cooling fan, comprising: A fan frame having a shaft tube; A stator located at the outer periphery of the shaft tube, and A fan wheel as claimed in any one of claims 1 to 5 rotatably disposed within the fan frame, the hub having a magnetic member opposite the stator.

Description

Fan wheel and heat radiation fan with same Technical Field The present invention relates to a fan wheel and a heat dissipating fan having the same. Background The existing fan wheel is provided with a rotating shaft and a hub, wherein the hub is combined with the rotating shaft, the fan wheel is also provided with a plurality of blades, the blades are arranged around the hub, and the blades are driven to synchronously rotate by rotating the hub, so that the blades drive air to generate air flow. However, when the blades rotate to disturb the airflow, the airflow generates different pressures and flow rates above and below the blades, respectively, so that the airflow above the blades has a high flow rate and a low pressure, and the airflow below the blades has a low flow rate and a high pressure, so that the high-pressure airflow below the blades flows to a low pressure area above the blades, and a vortex is formed at the tail edges of the blades, so that the rotation resistance of the blades is increased, and the air volume of the conventional fan is difficult to effectively lift. In view of this, there is a need for improvement in existing sector wheels. Disclosure of Invention In order to solve the above problems, the present invention provides a fan wheel, which can reduce the generation of vortex phenomenon, thereby improving the air volume and saving energy. The present invention provides a fan wheel with improved wind-driving efficiency. Throughout this disclosure, directional or approximate terms, such as "front", "back", "left", "right", "upper (top)", "lower (bottom)", "inner", "outer", "side", etc., refer primarily to the direction of the drawings and are used merely to aid in the description and understanding of various embodiments of the present invention and are not intended to be limiting. The use of the terms "a" or "an" for the components and members described throughout this specification is for convenience only and to provide a general meaning for the scope of the invention, which should be construed in an effort to include one or at least one and the singular concept also includes the plural unless it is obvious that it is meant otherwise. The terms "coupled," "assembled," or "assembled" as used throughout this disclosure, generally include those that are separated without damaging the components after connection, or that are not separated after connection, and may be selected by one skilled in the art based on the materials or assembly requirements of the components to be connected. The fan wheel comprises a rotating shaft, a hub connected to the rotating shaft, and a plurality of fan blades arranged around the hub, wherein the fan blades are respectively provided with a proximal shaft end and a distal shaft end, the proximal shaft end is connected with the hub, the fan blades are provided with a bifurcation structure adjacent to the distal shaft end, the bifurcation structure is provided with a main wing and a winglet, the winglet is provided with a wind inlet side and a diversion side, the winglet is provided with a wind inlet first end point on the wind inlet side, the winglet is provided with a wind diversion first end point on the diversion side, the wind inlet first end point and the wind diversion first end point are both connected with the main wing, a first radial distance is arranged between the wind inlet first end point and the axis, a second radial distance is arranged between the wind diversion first end point and the axis, and the second radial distance is the same as the first radial distance. The cooling fan comprises a fan frame, a stator and a fan wheel, wherein the fan frame is provided with a shaft tube, the stator is arranged on the periphery of the shaft tube, the fan wheel is rotatably arranged in the fan frame, and the hub is provided with a magnetic piece opposite to the stator. Therefore, the fan wheel and the cooling fan with the fan wheel can inhibit the backflow of air flow by utilizing the bifurcation structure, further reduce the generation of vortex phenomenon, ensure that the air flow screwed out by the fan blades is not blocked, and enable the fan blades to generate effective air flow even if the motor is at low rotation speed so as to maintain the preset air quantity, thereby having the effects of improving the air quantity and saving energy. The fan wheel may have a maximum radius, and a ratio of the first radial distance to the maximum radius may be 0.85 to 0.98. Therefore, the winglet can have a better size ratio and has the effect of enabling the fan blades to maintain the preset air quantity. The winglet can be provided with a wind inlet second end point at the wind inlet side, the wind inlet second end point is far away from the main wing, the wind inlet first end point and the wind inlet second end point can be connected to form a straight line section, an included angle can be formed between the straight line section and the axis of the rotati