A fan impeller using the principle of dimples on the surface of a golf ball

Abstract

The utility model relates to a fan impeller using the principle of dimples on the surface of a golf ball. The fan impeller includes a rotating disk and a plurality of fan blades. The rotating disk is composed of two groups of upper and lower opposite clamping disks. The clamping disk includes a circular disk body, a shaft sleeve is formed in the middle of the disk body, and a plurality of cavities are formed on the outer ring of the disk body. The fan blades include blades, a petiole and a connector, and the connector is clamped and fixed in the cavities of the two groups of clamping disks. The trailing edge of the blade is formed with a plurality of saw teeth, and the upper surface of the blade is formed with a plurality of spherical upper concave dimples, and the lower surface is formed with a plurality of spherical lower concave dimples. The surface of the blade on the impeller is covered with a dimple structure. With the structure of adjustable blade angle, the resistance can be reduced when the impeller rotates, the efficiency of the fan is improved, and the noise can be reduced at the same time.

Description

Technical field:

[0001] The utility model relates to the technical field of fans, and more specifically to a fan impeller utilizing the principle of dimples on the surface of a golf ball. Background technology:

[0002] Axial flow fans are airflows in the same direction as the axis of the fan blades. They are widely used for ventilation in general factories, warehouses, offices, and residential areas. Axial flow fans are composed of air guides, impellers, motors, and motor brackets. The surface of the blades on the impeller is generally smooth. As the impeller rotates, the blades cut the air to generate airflow, but there is also resistance, which will produce noise. The surface of a golf ball is generally covered with dimples, and the dimples can optimize aerodynamic characteristics, allowing the ball to fly farther and higher. These small dimples can reduce air resistance, increase lift, and thus increase the flight distance and height of the ball. Specifically, the small dimples can form a thin turbulent boundary layer that is close to the surface of the ball, reducing the wake range and thus reducing air resistance. The impeller surface of the fan can learn from the principle of the dimples on the golf ball to reduce air resistance during its operation, and indirectly reduce noise. Therefore, it is necessary to design an impeller with the above structure. Utility model content:

[0003] The purpose of the utility model is to address the deficiencies of the prior art and to provide a fan impeller that utilizes the dimple principle of the golf ball surface. The surface of the blades on the impeller is covered with dimple structures, which can reduce resistance when the impeller rotates, thereby improving the performance of the fan and reducing noise.

[0004] A fan impeller using the principle of dimples on the surface of a golf ball, the fan impeller comprises a rotating disc and a plurality of fan blades, the rotating disc is composed of two sets of upper and lower opposite clamping discs, the clamping disc comprises a circular disc body, a shaft sleeve is formed in the middle of the disc body, and a plurality of cavities are formed in the outer ring of the disc body; the fan blade comprises a blade, a petiole and a connector, the connector is clamped and fixed in the cavities of the two sets of clamping discs; a plurality of saw teeth are formed on the trailing edge of the blade, a plurality of spherical upper concave dimples are formed on the upper surface of the blade, and a plurality of spherical lower concave dimples are formed on the lower surface;

[0005] The upper cavity of the chuck includes a semi-conical inner positioning groove, a semi-cylindrical transition groove and a semi-conical flaring groove; the upper connector of the fan blade includes a conical head, a cylindrical neck and a conical tail, and the head, neck and tail are respectively inserted in the inner positioning groove, transition groove and flaring groove of the cavity; a center plug hole is formed on the head and neck of the connector, and a plurality of annular inner snap-in teeth are formed on the inner wall of the center plug hole; a conical angle adjustment block is inserted in the inner positioning groove of the chuck, and a circular inner plug is formed on the side of the angle adjustment block close to the connector, and a plurality of annular outer snap-in teeth are formed on the outer wall of the inner plug, the inner plug is inserted in the center plug hole of the connector, and the outer snap-in teeth are inserted in the tooth grooves between the inner snap-in teeth; a limiting card strip is formed on the side of the angle adjustment block close to the sleeve; a linear limiting card slot is formed on the bottom surface of the inner positioning groove, and the limiting card strip is inserted in the limiting card slot of the chuck.

[0006] Preferably, the outer ring of the chuck on the upper side of the turntable is formed with a number of downwardly protruding and arc-shaped positioning ribs, and the chuck on the lower side of the turntable is formed with a number of downwardly recessed and arc-shaped positioning rib grooves, and the positioning ribs are inserted in the positioning rib grooves; the positioning ribs and positioning rib grooves are respectively distributed between the cavities.

[0007] Preferably, the centers of the arcs of the positioning ribs or positioning rib grooves on the chuck are all located on the central axis of the chuck, and the positioning ribs, positioning rib grooves and cavities are evenly distributed in a ring shape around the central axis of the chuck.

[0008] Preferably, a reinforcing rib is formed between the cavity of the chuck and the sleeve.

[0009] Preferably, the disc bodies on both sides of the cavity are respectively formed with a first step hole and a first threaded hole, and the first step hole and the first threaded hole are respectively distributed on the clamping discs on the upper and lower sides of the turntable;

[0010] A plurality of second step holes and second threaded holes are formed on the disc body around the shaft sleeve, and the second step holes and second threaded holes are respectively distributed on the clamping discs on the upper and lower sides of the rotating disc;

[0011] Screws are inserted into the first step hole and the second step hole of the chuck respectively, and the screws are threadedly fixed in the first threaded hole and the second threaded hole of the chuck respectively.

[0012] Preferably, the second stepped holes and the second threaded holes are evenly distributed in a ring shape around the central axis of the chuck.

[0013] The beneficial effects of the utility model are:

[0014] The surface of the blades on the impeller is covered with pit structures, and the structure with adjustable blade angles can reduce resistance when the impeller rotates, thereby improving the efficiency of the fan and reducing noise. Description of the drawings:

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the utility model in a front view;

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the utility model without some blades and chucks;

[0018] Figure 4 It is a top view schematic diagram of the utility model with some fan blades and chuck missing.

[0019] In the figure: 1. chuck; 11. disc body; 12. sleeve; 13. cavity; 131. expansion groove; 132. transition groove; 133. inner positioning groove; 14. reinforcement rib plate; 15. positioning rib; 16. first step hole; 17. first threaded hole; 18. second step hole; 19. second threaded hole; 110. limit slot; 2. fan blade; 21. blade; 211. upper recess; 212. lower recess; 213. sawtooth; 22. petiole; 23. connector; 231. head; 232. neck; 233. tail; 3. angle adjustment block; 31. limit strip. Specific implementation method:

[0020] Example: See Figures 1 to 4 As shown, a fan impeller using the principle of dimples on the surface of a golf ball, the fan impeller comprises a rotating disc and a plurality of blades 2, the rotating disc is composed of two groups of upper and lower opposite clamping discs 1, the clamping disc 1 comprises a circular disc body 11, a shaft sleeve 12 is formed in the middle of the disc body 11, and a plurality of cavities 13 are formed on the outer ring of the disc body 11; the fan blade 2 comprises a blade 21, a petiole 22 and a connector 23, the connector 23 is clamped and fixed in the cavity 13 of the two groups of clamping discs 1; a plurality of saw teeth 213 are formed on the trailing edge of the blade 21, a plurality of spherical upper concave dimples 211 are formed on the upper surface of the blade 21, and a plurality of spherical lower concave dimples 212 are formed on the lower surface;

[0021] The mold cavity 13 on the chuck 1 includes a semi-conical inner positioning groove 133, a semi-cylindrical transition groove 132 and a semi-conical flaring groove 131; the connector 23 on the blade 2 includes a conical head 231, a cylindrical neck 232 and a conical tail 233, and the head 231, the neck 232 and the tail 233 are respectively inserted into the inner positioning groove 133, the transition groove 132 and the flaring groove 131 of the mold cavity 13; the head 231 and the neck 232 of the connector 23 are formed with a central plug hole 234, and the inner wall of the central plug hole 234 is formed with a plurality of annular inner card slots. Connecting teeth 235; a conical angle adjustment block 3 is inserted in the inner positioning groove 133 of the chuck 1, and a circular inner plug is formed on the side of the angle adjustment block 3 close to the connector 23, and a plurality of annular outer engaging teeth are formed on the outer wall of the inner plug, the inner plug is inserted in the central plug hole 234 of the connector 23, and the outer engaging teeth are inserted in the tooth grooves between the inner engaging teeth 235; a limiting clip strip 31 is formed on the side of the angle adjustment block 3 close to the sleeve 12; a linear limiting clip slot 110 is formed on the bottom surface of the inner positioning groove 133, and the limiting clip strip 31 is inserted in the limiting clip slot 110 of the chuck 1.

[0022] The outer ring of the chuck 1 on the upper side of the turntable is formed with a plurality of downwardly protruding and arc-shaped positioning ribs 15, and the chuck 1 on the lower side of the turntable is formed with a plurality of downwardly recessed and arc-shaped positioning rib grooves, and the positioning ribs 15 are inserted into the positioning rib grooves; the positioning ribs 15 and the positioning rib grooves are respectively distributed between the cavities 13, and the two groups of chucks 1 are assembled and positioned by the positioning ribs 15 and the positioning rib grooves.

[0023] The arc centers of the positioning ribs 15 or the positioning rib grooves on the chuck 1 are all located on the central axis of the chuck 1 , and the positioning ribs 15 , the positioning rib grooves and the cavity 13 are all evenly distributed in a ring shape around the central axis of the chuck 1 .

[0024] A reinforcing rib plate 14 is formed between the cavity 13 of the chuck 1 and the shaft sleeve 12, and the reinforcing rib plate 14 can improve the strength of the entire turntable.

[0025] The disc body 11 on both sides of the cavity 13 is formed with a first stepped hole 16 and a first threaded hole 17 respectively, and the first stepped hole 16 and the first threaded hole 17 are respectively distributed on the chuck 1 on the upper and lower sides of the turntable;

[0026] A plurality of second step holes 18 and second threaded holes 19 are formed on the disc body 11 around the sleeve 12, and the second step holes 18 and second threaded holes 19 are respectively distributed on the chuck 1 on the upper and lower sides of the turntable;

[0027] Screws are respectively inserted into the first step hole 16 and the second step hole 18 of the chuck 1, and the screws are respectively threaded and fixed in the first threaded hole 17 and the second threaded hole 19 of the chuck 1; the two groups of chucks 1 are fixed together by screws, and their hole positions are divided into two groups of outer ring and inner ring, and the hole positions of the outer ring are to ensure effective connection with the fan blades 2; the hole positions of the inner ring are to ensure that the two groups of sleeves 12 are effectively connected together to prevent the inner hole positions of the sleeves 12 from being misaligned.

[0028] The second stepped holes 18 and the second threaded holes 19 are evenly distributed in a ring shape around the central axis of the chuck 1 .

[0029] The upper recesses 211 and the lower recesses 212 on the upper and lower surfaces of the blade 21 are arranged in an array, and the upper recesses 211 and the lower recesses 212 are staggered.

[0030] Working principle: This product is a fan impeller that uses the dimple principle of the golf ball surface. It has two main technical points. The first point is that an upper dimple 211 and a lower dimple 212 are respectively provided on the upper and lower surfaces of the blade 21. The upper dimple 211 and the lower dimple 212 are based on the dimple structure of the golf ball surface.

[0031] However, because the external structure of the golf ball is different from that of the fan blade 2, only forming a pit structure on the surface of the blade 21 may not necessarily reduce the airflow resistance, and a suitable installation angle of the fan blade 2 is also required. Therefore, the second point is the structure with adjustable angle of the fan blade 2. By adjusting the angle of the fan blade 2 and running tests, the ideal angle that matches the pit structure can be obtained; thereby, the final fan impeller can reduce air resistance, improve fan efficiency, and reduce noise at the same time.

[0032] The embodiments are used to illustrate the present invention, but not to limit the present invention. Any person skilled in the art may modify the embodiments without violating the spirit and scope of the present invention, and therefore the scope of protection of the present invention shall be as set forth in the claims of the present invention.

Claims

1. A fan impeller using the principle of dimples on the surface of a golf ball, the fan impeller comprising a rotating disc and a plurality of blades (2), the rotating disc comprising two sets of upper and lower opposite clamping discs (1), the clamping disc (1) comprising a circular disc body (11), a shaft sleeve (12) formed in the middle of the disc body (11), and a plurality of cavities (13) formed in the outer ring of the disc body (11); the blades (2) comprising blades (21), a petiole (22) and a connector (23), the connector (23) being clamped and fixed in the cavities (13) of the two sets of clamping discs (1); characterized in that: The trailing edge of the blade (21) is formed with a plurality of saw teeth (213); the upper surface of the blade (21) is formed with a plurality of spherical upper recesses (211); and the lower surface of the blade (21) is formed with a plurality of spherical lower recesses (212); The upper mold cavity (13) of the chuck (1) comprises a semi-conical inner positioning groove (133), a semi-cylindrical transition groove (132) and a semi-conical flaring groove (131); the upper connector (23) of the fan blade (2) comprises a conical head (231), a cylindrical neck (232) and a conical tail (233), and the head (231), the neck (232) and the tail (233) are respectively inserted into the inner positioning groove (133), the transition groove (132) and the flaring groove (131) of the mold cavity (13); the head (231) and the neck (232) of the connector (23) are formed with a central plug hole (234), and the inner wall of the central plug hole (234) is formed with a plurality of annular The inner positioning groove (133) of the chuck (1) is provided with a conical angle adjustment block (3), and a circular inner plug is formed on the side of the angle adjustment block (3) close to the connector (23), and a plurality of annular outer engaging teeth are formed on the outer wall of the inner plug, the inner plug is inserted into the central plug hole (234) of the connector (23), and the outer engaging teeth are inserted into the tooth grooves between the inner engaging teeth (235); a limiting clamping strip (31) is formed on the side of the angle adjustment block (3) close to the shaft sleeve (12); a linear limiting clamping groove (110) is formed on the bottom surface of the inner positioning groove (133), and the limiting clamping strip (31) is inserted into the limiting clamping groove (110) of the chuck (1).

2. The fan impeller using the golf ball surface dimple principle according to claim 1, characterized in that: The outer ring of the chuck (1) on the upper side of the turntable is formed with a plurality of downwardly protruding and arc-shaped positioning ribs (15), and the chuck (1) on the lower side of the turntable is formed with a plurality of downwardly recessed and arc-shaped positioning rib grooves, and the positioning ribs (15) are inserted into the positioning rib grooves; the positioning ribs (15) and the positioning rib grooves are respectively distributed between the mold cavities (13).

3. The fan impeller using the golf ball surface dimple principle according to claim 2, characterized in that: The arc centers of the positioning ribs (15) or positioning rib grooves on the chuck (1) are all located on the central axis of the chuck (1), and the positioning ribs (15), the positioning rib grooves and the cavity (13) are all evenly distributed in a ring shape around the central axis of the chuck (1).

4. The fan impeller using the golf ball surface dimple principle according to claim 1, characterized in that: A reinforcing rib plate (14) is formed between the mold cavity (13) of the chuck (1) and the shaft sleeve (12).

5. The fan impeller using the golf ball surface dimple principle according to claim 1, characterized in that: A first stepped hole (16) and a first threaded hole (17) are respectively formed on the disc body (11) on both sides of the cavity (13); the first stepped hole (16) and the first threaded hole (17) are respectively distributed on the chuck (1) on the upper and lower sides of the turntable; A plurality of second step holes (18) and second threaded holes (19) are formed on the disc body (11) around the shaft sleeve (12), and the second step holes (18) and the second threaded holes (19) are respectively distributed on the clamping disc (1) on the upper and lower sides of the rotating disc; Screws are respectively inserted into the first step hole (16) and the second step hole (18) of the chuck (1), and the screws are respectively threaded and fixed in the first threaded hole (17) and the second threaded hole (19) of the chuck (1).

6. The fan impeller using the golf ball surface dimple principle according to claim 5, characterized in that: The second stepped hole (18) and the second threaded hole (19) are evenly distributed in a ring shape around the central axis of the chuck (1).

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