Double-arc fan blade for enhancing wind speed and wind power
Through the double-curved blade design, the problem of insufficient fan speed and wind power is solved, and a more uniform and soft air flow output is achieved, reducing motor load and noise.
Patent Information
- Application Number
- CN202422201009.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-09
AI Technical Summary
The fan blades of existing electric fans are insufficient, and the airflow is dispersed, making it difficult to provide concentrated and fixed airflow. The production cost of complex shape fan blades is high and balanced.
The double-curved blade design is adopted, with a large bending degree of the blade, forming an airflow channel, and a large contact area between the blade and the air, reducing turbulence and improving wind power uniformity and flexibility.
Improves air volume and wind power uniformity, reduces airflow turbulence and energy loss, provides a more stable airflow experience, and reduces motor load and noise.
Smart Images
Figure CN223136472U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an improvement of daily household appliances, in particular to an improvement of a double-arc fan blade. Background Art
[0002] The electric fan is one of the most commonly used household appliances in many families and is widely welcomed because of its advantages such as low energy consumption, convenient and fast use, and adjustable air volume.
[0003] Most current electric fans use circular fan blades. Such circular blades can provide a uniform air flow distribution and have a low manufacturing cost. However, the wind speed and wind force of such fan blades are insufficient, and at the same time, the air flow generated by such traditional fan blades is relatively dispersed and it is difficult to generate a concentrated and relatively fixed-direction air flow.
[0004] Fan blades with complex shapes have a high production cost, and the more complex the shape, the more difficult it is to solve the balance problem. Increasing the angle can increase the air volume because the air flow will be more effectively guided. However, if the angle is too large, it will increase the motor load. If the inclination angle is too large, it will cause an increase in power consumption and noise of the fan, and at the same time, the load on the motor will also increase significantly, affecting its lifespan.
[0005] Common household electric fans usually have 3 - 5 blades, and a few high-end fans use 7 or even more blades. Multi-blade fans can provide a more stable and gentle air flow and reduce wind cut noise, but they consume more power. Combinations of different blade shapes, angles, and numbers can meet diverse usage requirements, such as enhancing the wind effect or reducing noise. With the progress of technology, the processing costs of various complex-shaped fan blades have gradually decreased, and traditional fan blades can no longer meet the needs of users and the market. Summary of the Utility Model
[0006] The purpose of the utility model is to provide a double-arc fan blade that enhances wind speed and wind force in view of the defects and deficiencies of the prior art. Through a large curvature of the blade body, the air flow becomes smoother, reducing the turbulent flow phenomenon of the air flow, making the wind force more uniform and gentle. It can avoid the strong air flow fluctuations in the traditional straight blade design, provide a more stable air flow, and also make the air flow speed distribution more uniform, thus bringing a more gentle wind force output.
[0007] To achieve the above purpose, the utility model adopts the following technical solutions: It includes an intermediate connection disk 1 and several double-arc blades 2. The several double-arc blades 2 are evenly fixed on the outside of the intermediate connection disk 1; the double-arc blades 2 are arranged in a double-arc shape. The double-arc blades 2 include two symmetrically arranged single blades 21. The ends of the single blades 21 far from the intermediate connection disk 1 are reversely twisted and then connected to form an integral body. The middle parts of the two single blades 21 of the same double-arc blade 2 are provided with protrusions 22 in opposite directions.
[0008] The number of the double-arc blades 2 is 3 - 7. The double-arc blades 2 are evenly arranged in an arc array around the middle connection disc 1. The double-arc blades 2 and the middle connection disc 1 are integrally formed or fixedly inserted on the middle connection disc 1.
[0009] A connection hole 11 is provided in the middle of the middle connection disc 1.
[0010] The middle connection disc 1 has a shell structure. The rear surface of the middle connection disc 1 is a cavity structure. A connection hole column 12 is provided inside the cavity. Several reinforcing rib strips 13 are evenly arranged around the connection hole column 12. The provision of the connection hole column 12 can ensure the stability of the insertion of the entire fan blade.
[0011] At one end of the two single blades 21 on the double-arc blade 2 close to the middle connection disc 1 is the inner end of the single blade 21. The inner ends of the two single blades 21 of each double-arc blade 2 are respectively fixedly connected to the middle connection disc 1, and an air flow channel 23 is formed between the two single blades 21.
[0012] The working principle of the present utility model: The design of the single blade 21 in this case has a large curvature, making the air flow smoother, reducing the turbulent flow phenomenon of the air flow, and making the wind force more uniform and gentle; such a curvature can avoid the strong air flow fluctuations in the traditional straight blade design and provide a more stable air flow. It can reduce the air resistance during the operation of the fan and reduce the separation phenomenon of the air flow on the blades; through this aerodynamic optimization, the air flow is more efficiently directed to the target direction, reducing energy loss, and at the same time the wind speed distribution is more uniform, thus bringing a gentle wind force output.
[0013] The blade design of the double-arc structure can contact more air compared with the traditional fan blade. The arc-shaped blade can expand the effective area of contact between the blade and the air, so that at the same rotational speed, more air can be pushed, improving the wind force output. The double-arc structure can guide the air to pass through the blade more orderly, reducing the formation of turbulent flow. In this way, the mechanical energy can be more efficiently converted into air flow, improving the wind force efficiency. Especially the two-layer arc design makes the wind force more concentrated and not easily dispersed.
[0014] At the same time, each double-arc blade 2 has an air flow channel 23. The air flow wind force generated through the air flow channel 23 can keep the single blade 21 balanced during high-speed rotation, reducing vibration and irregular air flow, thereby further enhancing the gentle wind force experience.
[0015] After adopting the above technical solution, the beneficial effects of the present utility model are as follows: It can not only increase the air volume, but also provide a more comfortable and stable wind force experience; it can avoid the strong air flow fluctuations in the traditional straight blade design, provide a more stable air flow, and also make the air flow wind speed distribution more uniform, thereby bringing a more gentle wind force output. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0017] Figure 1 is a front structural schematic diagram of the present invention;
[0018] Figure 2 is Figure 1 a left view of
[0019] Figure 3 is a structural schematic diagram of the present invention;
[0020] Figure 4 is Figure 3 another perspective view of
[0021] Figure 5 is Figure 4 another perspective view of
[0022] Explanation of reference numerals: intermediate connecting disc 1, double-arc blade 2, single blade 21, protrusion 22, connecting hole 11, connecting hole column 12, reinforcing rib 13, single blade 21, air flow channel 23. Specific embodiments
[0023] Refer to Figures 1-5As shown in the figure, the technical solution adopted in this specific embodiment is as follows: It is composed of an intermediate connecting disk 1 and several double-arc blades 2, and several double-arc blades 2 are evenly fixed on the outer side of the intermediate connecting disk 1; the double-arc blades 2 are arranged in a double-arc shape, and the double-arc blades 2 include two single blades 21 arranged symmetrically. The ends of the single blades 21 far from the intermediate connecting disk 1 are reversely twisted and then connected to each other and integrated. The middle parts of the two single blades 21 of the same double-arc blade 2 are provided with protrusions 22 in opposite directions; the number of the double-arc blades 2 is 5, and the double-arc blades 2 are evenly arranged in a circular arc array around the intermediate connecting disk 1. The double-arc blades 2 and the intermediate connecting disk 1 are integrally arranged or fixedly inserted on the intermediate connecting disk 1. A connecting hole 11 is provided in the middle of the intermediate connecting disk 1. The intermediate connecting disk 1 is of a shell structure, the rear surface of the intermediate connecting disk 1 is of a cavity structure, and a connecting hole column 12 is arranged inside the cavity. Several reinforcing ribs 13 are evenly arranged around the connecting hole column 12. The arrangement of the connecting hole column 12 can ensure the stability of the insertion of the entire fan blade. The ends of the two single blades 21 of the double-arc blade 2 close to the intermediate connecting disk 1 are the inner ends of the single blades 21. The inner ends of the two single blades 21 of each double-arc blade 2 are respectively fixedly connected to the intermediate connecting disk 1, and an air flow channel 23 is formed between the two single blades 21.
[0024] The design of the single blade 21 in this specific embodiment has a large curvature, making the air flow smoother, reducing the turbulence of the air flow, and making the wind force more uniform and gentle; such a curvature can avoid the strong air flow fluctuations in the traditional straight blade design and provide a more stable air flow. It can reduce the air resistance during the operation of the fan and reduce the separation of the air flow on the blades; through this aerodynamic optimization, the air flow is more efficiently directed to the target direction, reducing energy loss, and at the same time the wind speed distribution is more uniform, thus bringing a gentle wind force output.
[0025] The blade design of the double-arc structure can contact more air compared with the traditional fan blades. The arc-shaped blades can expand the effective area of contact between the blades and the air, so that at the same rotational speed, more air can be pushed, improving the wind force output. The double-arc structure can guide the air to pass through the blades more orderly, reducing the formation of turbulence. In this way, the mechanical energy can be more efficiently converted into air flow, improving the wind force efficiency. Especially the two-layer arc design makes the wind force more concentrated and not easily dispersed.
[0026] At the same time, there is an air flow channel 23 on each double-arc blade 2. The air flow wind force generated through the air flow channel 23 can keep the single blade 21 balanced during high-speed rotation, reducing vibration and irregular air flow, thereby further enhancing the gentle wind force experience.
[0027] After adopting the above technical solution, the beneficial effects of the present utility model are as follows: It can not only increase the air volume, but also provide a more comfortable and stable wind experience; it can avoid the strong air flow fluctuations in the traditional straight blade design, provide a more stable air flow, and also make the air flow velocity distribution more uniform, thereby bringing a softer wind output.
[0028] The above is only used to illustrate the technical solution of the present utility model and not to limit it. Any other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the present utility model shall be covered within the scope of the claims of the present utility model as long as they do not depart from the spirit and scope of the technical solution of the present utility model.
Claims
1. A double-arc fan blade for enhancing wind speed and wind force, characterized in that: It includes an intermediate connecting disc (1) and several double-arc blades (2), and the several double-arc blades (2) are uniformly fixed on the outer side of the intermediate connecting disc (1); the double-arc blade (2) is arranged in a double-arc shape, and the double-arc blade (2) includes two single blades (21) arranged symmetrically. The ends of the single blades (21) far from the intermediate connecting disc (1) are twisted backward and connected to each other to form an integral body, and the middle parts of the two single blades (21) of the same double-arc blade (2) are provided with protrusions (22) in opposite directions.
2. The double-arc fan blade for enhancing wind speed and wind force according to claim 1, wherein: The number of the double-arc blades (2) is 3 - 7, and the double-arc blades (2) are uniformly arranged in a circular arc array around the intermediate connecting disc (1). The double-arc blades (2) and the intermediate connecting disc (1) are integrally arranged or fixedly inserted on the intermediate connecting disc (1).
3. The double-arc fan blade for enhancing wind speed and wind force according to claim 1, characterized in that: A connecting hole (11) is provided in the middle of the intermediate connecting disc (1).
4. The double-arc fan blade for enhancing wind speed and wind force according to claim 1, characterized in that: The intermediate connecting disc (1) is of a shell structure, the rear surface of the intermediate connecting disc (1) is of a cavity structure, a connecting hole column (12) is arranged inside the cavity, and several reinforcing ribs (13) are uniformly arranged around the connecting hole column (12).
5. The double-arc fan blade for enhancing wind speed and wind force according to claim 1, characterized in that: The ends of the two single blades (21) of the double-arc blade (2) close to the intermediate connecting disc (1) are the inner ends of the single blades (21). The inner ends of the two single blades (21) of each double-arc blade (2) are respectively fixedly connected to the intermediate connecting disc (1), and an air flow channel (23) is formed between the two single blades (21).