Blade with bionic anterior kiss
By designing the streamlined bionic front kiss of the bionic dolphin snout on the outside of the fan blade, the problem of poor aerodynamic performance of the traditional fan blades is solved, and more efficient wind energy capture and overall fan performance is achieved.
Patent Information
- Application Number
- CN202422643717.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-10-31
AI Technical Summary
Traditional fan blades have problems such as poor aerodynamic performance, heavier weight and low efficiency, which affects the overall performance and operating costs of the fan and does not meet the requirements of energy conservation and emission reduction.
The bionic dolphin snout is adopted. The bionic front kiss is provided on the outside of the blade. The bionic front kiss protrudes forward from the front end of the outer edge, and the width gradually becomes larger and smaller, imitating the streamlined features of the dolphin snout to reduce fluid resistance.
Reduce air flow resistance, improve the wind energy capture efficiency of fan blades, reduce energy loss, improve the overall efficiency and stability of the fan, extend the life of the blade, reduce noise and vibration, and enhance aesthetics.
Smart Images
Figure CN223241703U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fan blades, in particular to a blade with a bionic front kiss. Background Art
[0002] Traditional fan blades are mostly made of steel or aluminum alloy, usually with simple geometric shapes and cross-sectional shapes, such as flat, curved, twisted, etc. This simple design is easy to manufacture and install, and uses common manufacturing processes such as casting, forging, and stamping. The blades produced have a simple structure and are relatively easy to maintain and replace parts.
[0003] However, due to design and material limitations, traditional fan blades may suffer from poor aerodynamic performance, heavy weight, and low efficiency. These issues affect the overall performance and application range of the fan, leading to increased operating costs and failing to meet energy conservation and emission reduction requirements. Utility Model Content
[0004] The main purpose of the utility model is to provide a blade with a bionic front kiss, aiming to solve the technical problems of poor aerodynamic performance and low efficiency of traditional fan blades.
[0005] To achieve the above-mentioned object, the present invention provides a leaf with a bionic front kiss, which has an inner side close to the petiole and an outer side away from the petiole. The outer side of the leaf is provided with a bionic front kiss connected to its outer edge. The bionic front kiss is a sheet-like structure and protrudes forward from the front end of the outer edge.
[0006] Wherein, one side surface of the bionic front snout is connected to the outer edge, and the width of the bionic front snout from the front end to the rear end gradually increases and then gradually decreases.
[0007] Optionally, the bionic front snout is divided into a front section, a middle section and a rear section from its front end to its rear end, and the width of the front section is a2, where 1≦a2≦5, and the unit is mm.
[0008] Optionally, the middle section reaches the maximum width a of the bionic front snout at a distance b2 from the front end. max , where 2≦b2≦8, unit is mm.
[0009] Optionally, the rear section has the minimum width a of the bionic front snout min ; Among them, 1≦a min ≦4, unit: mm.
[0010] Optionally, the total length of the bionic front snout is B, 5≦B≦40, in mm.
[0011] Optionally, when the blade is mounted on the impeller, the blade cross-sectional parameters at the radius ∅930 with the impeller rotation axis as the center are: Cmax is 4.1mm, e is 35.5mm, b is 180.7mm, B 1A 2 degrees, B 2A is 37 degrees, ζi is 25 degrees;
[0012] Where Cmax: C is the airfoil thickness, the distance between the normal line of the airfoil centerline and the intersection of the airfoil contour line, that is, the diameter of the airfoil inscribed circle, and the maximum value of the airfoil thickness is called the maximum airfoil thickness Cmax;
[0013] e: Maximum thickness position, the distance from the leading edge of the airfoil to the maximum thickness of the airfoil along the chord direction;
[0014] b: chord length, the length of the chord of the wing;
[0015] B 1A : The airfoil inlet geometric angle is the angle between the tangent line through the leading edge of the airfoil to the airfoil centerline and the forehead line (lower horizontal line);
[0016] B 2A : The airfoil inlet geometric angle is the angle between the tangent line through the airfoil trailing edge point to the airfoil midline and the rear forehead line (upper horizontal line);
[0017] ζi: airfoil installation angle, which is the angle between the chord and the cascade front line.
[0018] Optionally, when the blade is mounted on the impeller, the blade cross-sectional parameters at the radius ∅780 with the impeller rotation axis as the center are: Cmax is 3mm, e is 30.9mm, b is 147.2mm, B 1A 5 degrees, B 2A is 30 degrees and ζi is 22 degrees.
[0019] Optionally, the blade section parameters at radius ∅630 are: Cmax is 3.3 mm, e is 30.7 mm, b is 137.2 mm, B 1A 5 degrees, B 2A is 35 degrees and ζi is 25 degrees.
[0020] Optionally, the blade section parameters at radius ∅480 are: Cmax is 3.8 mm, e is 39.2 mm, b is 126.7 mm, B 1A 8 degrees, B 2A is 43 degrees and ζi is 33 degrees.
[0021] Optionally, the blade section parameters at radius ∅330 are: Cmax is 4.8 mm, e is 49.3 mm, b is 114.6 mm, B 1A is 16 degrees, B 2A is 51 degrees and ζi is 41 degrees.
[0022] In the technical solution of the present invention, by imitating the streamlined features of the dolphin's snout, this shape can minimize the resistance of the fluid and reduce energy loss. The blades in this solution adopt a bionic front snout similar to the dolphin's snout. This design can greatly reduce the resistance to air flow. During the rotation of the fan blades, this design enables the blades to capture wind energy more efficiently, reduce the energy loss caused by wind resistance, and thus improve the overall efficiency of the fan. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.
[0024] Figure 1 A front view of an embodiment of a blade with a bionic front nose provided by the present invention;
[0025] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;
[0026] Figure 3 for Figure 1 Schematic diagram of the segmentation of each radius;
[0027] Figure 4 It is a schematic diagram of the names of the intersection lines of the blade surfaces;
[0028] Figure 5 A diagram of the intersection of curved surfaces at a section ∅930 of an embodiment of a blade with a bionic front nose provided by the present invention;
[0029] Figure 6 A diagram of the intersection of curved surfaces at a section ∅780 of an embodiment of a blade with a bionic front nose provided by the present invention;
[0030] Figure 7 A diagram of the intersection of curved surfaces at a section ∅630 of an embodiment of a blade with a bionic front nose provided by the present invention;
[0031] Figure 8 A diagram of the intersection of curved surfaces at a section ∅480 of an embodiment of a blade with a bionic front nose provided by the present invention;
[0032] Figure 9 This is a diagram of the intersection lines of the curved surfaces at the ∅330 section in an embodiment of a blade with a bionic nose provided by the present invention.
[0033] In the figure: leaf with bionic front kiss-100, petiole-1, outer edge-2, bionic front kiss-3, front segment-31, middle segment 32, back segment-33, leading edge-4, leaf surface-5.
[0034] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0035] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.
[0036] In order to better describe and illustrate the embodiments of the present application, reference may be made to one or more drawings, but the additional details or examples used to describe the drawings should not be considered as limiting the scope of the utility model invention of the present application, any of the currently described embodiments or preferred methods.
[0037] In the description of the present invention, it should be noted that the terms "length", "width", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate that the device referred to must have a specific orientation or operate in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.
[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.
[0039] Due to design and material limitations, traditional fan blades may suffer from poor aerodynamic performance, heavy weight, and low efficiency. These issues affect the overall performance and application range of the fan, leading to increased operating costs and failing to meet energy conservation and emission reduction requirements.
[0040] In view of this, the utility model proposes a blade with a bionic front kiss. Figure 1-8 For an embodiment of a blade with a bionic front kiss provided by the present invention, please refer to Figure 1-8The leaf 100 has an inner side close to the petiole 1 and an outer side away from the petiole 1. The outer side of the leaf 100 is provided with a bionic front kiss 3 connected to its outer edge 2. The bionic front kiss 3 is a sheet-like structure and protrudes forward from the front end of the outer edge 2 (that is, the top of the leading edge 4); wherein, the lower side of the bionic front kiss 3 is connected to the outer edge 2, and the width of the bionic front kiss 3 gradually increases and then gradually decreases from its front end to the rear end.
[0041] In the technical solution of the present invention, by imitating the streamlined features of the dolphin's snout, this shape can minimize the resistance of the fluid and reduce energy loss. The blade 100 in this solution adopts a bionic front snout 3 similar to the dolphin's snout. This design can greatly reduce the resistance to air flow. During the rotation of the fan blade 100, this design enables the blade 100 to capture wind energy more efficiently, reduce the energy loss caused by wind resistance, and thus improve the overall efficiency of the fan.
[0042] To better mimic the structure of a dolphin's snout, see Figure 2 In one embodiment of the present invention, the bionic front snout 3 is divided into a front section 31, a middle section 32 and a rear section 33 from its front end to its rear end. The width of the front section 31 is a2, where 1≦a2≦5, in mm. The middle section 32 reaches the maximum width a of the bionic front snout 3 at a position where it is a length b2 from the front end. max , where 2≦b2≦8, unit is mm. The rear section 33 has the minimum width a of the bionic front kiss 3 min ; Among them, 1≦a min ≦4, unit: mm. The total length of the bionic front kiss 3 is B, 5≦B≦40, unit: mm.
[0043] The Bionic Front Kiss 3 imitates the dolphin's kiss and has the following advantages.
[0044] Streamlined Design: The dolphin's snout features a streamlined shape, which minimizes water resistance. When swimming rapidly, the dolphin's streamlined snout enables it to move through the water more efficiently, reducing energy loss. The fan's streamlined design, inspired by the dolphin's snout, significantly reduces air flow resistance. As the fan blades 100 rotate, this design allows them to more efficiently capture wind energy, reducing energy loss due to wind resistance and thereby improving the fan's overall efficiency.
[0045] Smooth Surface: The dolphin's skin is smooth, further reducing frictional resistance. Combined with its snout, this smooth surface design allows the dolphin to swim more smoothly through the water. The streamlined shape of the snout allows air to flow smoothly over the leading edge 4 of the blade 100, reducing turbulence and eddies caused by airflow separation. This not only helps reduce noise levels during operation but also reduces mechanical stress caused by vibration, extending the service life of the blade 100.
[0046] Adaptability to Different Speeds: Whether swimming at low speeds or sprinting at high speeds, the dolphin's snout adapts perfectly to changing water currents, maintaining stability and efficiency. The bionic design of the dolphin's snout enables the wind turbine blades 100 to adapt to varying wind speeds. Whether in slow or high winds, the blades 100 maintain a stable operating state, ensuring efficient operation of the wind turbine at all speeds. This adaptability is crucial for improving the reliability and stability of the wind turbine.
[0047] Protection Mechanism: The dolphin's snout acts as a buffer, protecting it from damage while swimming or hunting. While the snout itself doesn't directly enhance mechanical strength, biomimetic design can inspire a similar buffer structure at the top of the leading edge 4 of the blade 100 to mitigate impacts from extreme environmental conditions (such as strong winds, hail, firefighting, rain, and snow). This can protect the blade 100 from damage to a certain extent, improving its durability.
[0048] Unique Appearance: The snout, a prominent feature of dolphins, adds a unique charm to them, making them easier to identify and distinguish. The bionic dolphin snout design gives the wind turbine blade 100 a unique appearance, enhancing its aesthetic appeal. This design also makes the blade 100 more visually striking, helping to enhance the wind turbine's recognition and identification.
[0049] In summary, the bionic dolphin snout design at the top of the leading edge 4 of the blade 100 offers numerous benefits, including reduced wind resistance, lower noise and vibration, adaptability to varying wind speeds, enhanced structural strength and durability, and improved aesthetics and recognition. These advantages will contribute to enhanced overall wind turbine performance and operating efficiency.
[0050] See also Figure 3-9 In one embodiment of the present invention, the curved surface of the blade is biomimetic in design. When the blade 100 is installed on the impeller, the cross-sectional parameters of the blade 100 at the radius ∅930 with the impeller rotation axis as the center are: Cmax is 4.1mm, e is 35.5mm, b is 180.7mm, B 1A 2 degrees, B 2Ais 37 degrees, ζi is 25 degrees; the cross-sectional parameters of blade 100 at radius ∅780 are: Cmax is 3mm, e is 30.9mm, b is 147.2mm, B 1A 5 degrees, B 2A is 30 degrees, ζi is 22 degrees; the cross-sectional parameters of blade 100 at radius ∅630 are: Cmax is 3.3mm, e is 30.7mm, b is 137.2mm, B 1A 5 degrees, B 2A is 35 degrees, ζi is 25 degrees; the cross-sectional parameters of blade 100 at radius ∅480 are: Cmax is 3.8mm, e is 39.2mm, b is 126.7mm, B 1A 8 degrees, B 2A is 43 degrees, ζi is 33 degrees; the cross-sectional parameters of blade 100 at radius ∅330 are: Cmax is 4.8mm, e is 49.3mm, b is 114.6mm, B 1A is 16 degrees, B 2A is 51 degrees, ζi is 41 degrees;
[0051] Where Cmax: C is the airfoil thickness, the distance between the normal line of the airfoil centerline and the intersection of the airfoil contour line, that is, the diameter of the airfoil inscribed circle, and the maximum value of the airfoil thickness is called the maximum airfoil thickness Cmax;
[0052] e: Maximum thickness position, the distance from the leading edge of the airfoil to the maximum thickness of the airfoil along the chord direction;
[0053] b: chord length, the length of the chord of the wing;
[0054] B 1A : The airfoil inlet geometric angle is the angle between the tangent line through the leading edge of the airfoil to the airfoil centerline and the forehead line (lower horizontal line);
[0055] B 2A : The airfoil inlet geometric angle is the angle between the tangent line through the airfoil trailing edge point to the airfoil midline and the rear forehead line (upper horizontal line);
[0056] ζi: airfoil installation angle, which is the angle between the chord and the cascade front line.
[0057] It should be noted that the role of bionic surface design is to imitate the biological structure design of birayfin fish in nature to achieve the following effects.
[0058] Improved aerodynamic performance: Bionic surface design mimics the curved shapes of organisms found in nature (such as bird wings and fish fins). These shapes have excellent fluid dynamics through long periods of natural selection and evolution. Applying these curved shapes to axial flow impellers optimizes the fluid dynamics of the blade 100, reducing resistance and energy consumption during fluid flow, thereby improving the impeller's aerodynamic efficiency and output power.
[0059] Noise Reduction: The bionic curved surface design can more effectively control the flow of fluid on the surface of the blade 100, reducing the occurrence of unstable flow phenomena such as eddy currents and turbulence. These unstable flow phenomena are one of the main causes of fluid machinery noise. Therefore, the bionic curved surface design helps to reduce the noise level of axial flow impellers, making them more environmentally friendly and energy-saving.
[0060] Enhanced structural stability: Bionic surface designs often have more reasonable stress and strength distribution, which helps enhance the structural stability and durability of axial flow impellers. Under high loads or harsh operating conditions, the bionic surface design can better withstand the impact and vibration of the fluid, thereby extending the service life of the impeller.
[0061] Optimizing flow and pressure distribution: The bionic curved surface design allows for fine-tuning of the curved shape of the blade 100 based on actual operating conditions to achieve more uniform flow and pressure distribution. This helps reduce turbulence and backflow within the impeller, improving flow efficiency and stability.
[0062] Broadening the scope of applications: Due to the advantages of bionic surface design in aerodynamic performance, noise control, and structural stability, axial flow impellers can be applied more widely in various fields. For example, in ventilation, air conditioning, and refrigeration, axial flow impellers with bionic surface design can provide more efficient, energy-saving, and environmentally friendly solutions.
[0063] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.
Claims
1. A leaf with a bionic front kiss, having an inner side near its petiole (1) and an outer side away from the petiole (1), characterized in that: The outer side of the blade is provided with a bionic front kiss (3) connected to the outer edge (2) thereof, and the bionic front kiss (3) is a sheet-like structure and protrudes forward from the front end of the outer edge (2); One side surface of the bionic front snout (3) is connected to the outer edge (2), and the width of the bionic front snout (3) gradually increases and then gradually decreases from the front end to the rear end.
2. The blade with a bionic front kiss according to claim 1, characterized in that: The bionic front kiss (3) is divided into a front section (31), a middle section (32) and a rear section (33) from its front end to its rear end, and the width of the front section (31) is a2, wherein 1≦a2≦5, and the unit is mm.
3. The blade with a bionic front kiss according to claim 2, characterized in that: The middle section (32) reaches the maximum width a of the bionic front snout (3) at a position where the length b2 of the middle section (32) is from the front end. max , where 2≦b2≦8, unit is mm.
4. The blade with a bionic front kiss according to claim 2, characterized in that: The rear section (33) has the minimum width a of the bionic front nose (3) min ; Among them, 1≦a min ≦4, unit: mm.
5. The blade with a bionic front kiss according to claim 2, characterized in that: The total length of the bionic front kiss (3) is B, 5≦B≦40, in mm.
6. The blade with a bionic front kiss according to claim 1, characterized in that: When the blade is installed on the impeller, the blade cross-sectional parameters at the radius ∅930 with the impeller rotation axis as the center are: Cmax is 4.1mm, e is 35.5mm, b is 180.7mm, B 1A 2 degrees, B 2A is 37 degrees, ζi is 25 degrees; Where Cmax: C is the airfoil thickness, the distance between the normal line of the airfoil centerline and the intersection of the airfoil contour line, that is, the diameter of the airfoil inscribed circle, and the maximum value of the airfoil thickness is called the maximum airfoil thickness Cmax; e: Maximum thickness position, the distance from the leading edge of the airfoil to the maximum thickness of the airfoil along the chord direction; b: chord length, the length of the chord of the wing; B 1A : The airfoil inlet geometric angle is the angle between the tangent line through the leading edge of the airfoil to the airfoil centerline and the forehead line; B 2A : The airfoil inlet geometric angle is the angle between the tangent line through the airfoil trailing edge point to the airfoil midline and the rear forehead line; ζi: airfoil installation angle, which is the angle between the chord and the cascade front line.
7. The blade with a bionic front kiss according to claim 6, characterized in that: When the blade is installed on the impeller, the blade cross-sectional parameters at the radius ∅780 with the impeller rotation axis as the center are: Cmax is 3mm, e is 30.9mm, b is 147.2mm, B 1A 5 degrees, B 2A is 30 degrees and ζi is 22 degrees.
8. The blade with a bionic front kiss according to claim 6, characterized in that: The blade section parameters at radius ∅630 are: Cmax is 3.3mm, e is 30.7mm, b is 137.2mm, B 1A 5 degrees, B 2A is 35 degrees and ζi is 25 degrees.
9. The blade with a bionic front kiss according to claim 6, characterized in that: The blade section parameters at radius ∅480 are: Cmax is 3.8mm, e is 39.2mm, b is 126.7mm, B 1A 8 degrees, B 2A is 43 degrees and ζi is 33 degrees.
10. The blade with a bionic front kiss according to claim 6, characterized in that: The blade section parameters at radius ∅330 are: Cmax is 4.8mm, e is 49.3mm, b is 114.6mm, B 1A is 16 degrees, B 2A is 51 degrees and ζi is 41 degrees.