An industrial ceiling fan

Abstract

The present invention provides an industrial ceiling fan, comprising a cover body, the cover body comprising an upper end cover and a lower end cover, the upper end cover and the lower end cover are jointly arranged to form a receiving cavity; and a motor assembly, the motor assembly comprising a stator assembly and a rotor assembly; the stator assembly comprises a disc-shaped iron core and a central axis; the rotor assembly comprises an outer ring and a plurality of magnetic poles arranged in the outer ring, the outer ring is installed between the upper end cover and the lower end cover; the periphery of the iron core is provided with a plurality of teeth, a groove is formed between the adjacent teeth, and the ratio of the tooth width to the tooth height of the teeth is between 0.07 and 0.23. Compared with the prior art, the industrial ceiling fan of the present invention has a lower input power under the condition of unchanged output power through the special design of tooth width and tooth height, thereby reducing the energy consumption of the industrial ceiling fan, thereby reducing the heat dissipation of the industrial ceiling fan, and effectively improving the service life of the industrial ceiling fan.

Description

Technical Field

[0001] The invention relates to an industrial ceiling fan. Background Art

[0002] Industrial ceiling fans are products specially developed for energy saving and consumption reduction and improving the comfort of the working environment. When under a large energy-saving fan, users will feel three-dimensional air supply from all directions, so that the sweat evaporation area is maximized, thereby forming a breeze system similar to nature. The fan blade diameter of an industrial ceiling fan is usually more than 5 meters. Since the blades are relatively large, the input power of the motor is relatively large, so the heat emitted by the motor is also relatively large. Since the motor is set in the housing, the heat dissipation effect of the motor is poor.

[0003] In view of the above problems, it is necessary to provide a new industrial ceiling fan to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide an industrial ceiling fan, which, through the special design of tooth width and tooth height, enables the industrial ceiling fan to have a lower input power while maintaining the same output power, thereby reducing the energy consumption of the industrial ceiling fan, and further reducing the heat dissipation of the industrial ceiling fan, effectively prolonging the service life of the industrial ceiling fan.

[0005] To achieve the above-mentioned purpose, the present invention provides an industrial ceiling fan, including a cover body, the cover body including an upper end cover and a lower end cover arranged opposite to the upper end cover, the upper end cover and the lower end cover are jointly arranged to form a receiving cavity, the upper end cover and the lower end cover are provided with an axial hole, and a bearing is arranged in the axial hole; and a motor assembly, the motor assembly includes a stator assembly and a rotor assembly; the stator assembly includes a circular plate-shaped iron core and a central axis matched with the bearing; the rotor assembly includes an outer ring and a plurality of magnetic poles arranged in the outer ring, and the outer ring is installed between the upper end cover and the lower end cover; a plurality of teeth are arranged on the periphery of the iron core, grooves are formed between the adjacent teeth, and the ratio of the tooth width to the tooth height of the teeth is between 0.07 and 0.23.

[0006] As a further improvement of the present invention, the ratio of the tooth width to the tooth height is between 0.07 and 0.16.

[0007] As a further improvement of the present invention, the number of the magnetic poles is 60, and the number of the grooves is 54.

[0008] As a further improvement of the present invention, the iron core is further provided with a plurality of stress dispersion holes.

[0009] As a further improvement of the present invention, the stress dispersion holes are in the shape of spokes and are evenly distributed on the iron core.

[0010] As a further improvement of the present invention, a fan hub is installed on the side of the upper end cover facing away from the lower end cover.

[0011] As a further improvement of the present invention, a first limiting portion is provided on the fan hub, and a second limiting portion cooperating with the first limiting portion is provided on the upper end cover.

[0012] As a further improvement of the present invention, the first limiting portion is a groove, and the second limiting portion is a protrusion.

[0013] As a further improvement of the present invention, the first limiting portion is a protrusion, and the second limiting portion is a groove.

[0014] As a further improvement of the present invention, the number of the first limiting portions and the second limiting portions is 4, and they are evenly distributed on the periphery of the bearing.

[0015] The beneficial effect of the present invention is that the industrial ceiling fan of the present invention has a lower input power while the output power remains unchanged through the special design of the tooth width and tooth height, thereby reducing the energy consumption of the industrial ceiling fan, and further reducing the heat dissipation of the industrial ceiling fan, effectively improving the service life of the industrial ceiling fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the industrial ceiling fan of the present invention.

[0017] Figure 2 yes Figure 1 Exploded view of the industrial ceiling fan shown.

[0018] Figure 3 yes Figure 1 A cross-sectional view of an industrial ceiling fan is shown.

[0019] Figure 4 It is a three-dimensional exploded view of the fan assembly.

[0020] Figure 5 is a cross-sectional view of the lower end cover.

[0021] Figure 6 is a schematic diagram of the stator assembly.

[0022] Figure 7 yes Figure 6 An enlarged view of a portion of the stator assembly is shown.

[0023] Figure 8 It is a three-dimensional schematic diagram of the fixed component. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] See also Figure 1 , Figure 2 , Figure 4 as well as Figure 5 As shown, the present invention discloses an industrial ceiling fan 100, including a hanger assembly 10, an electric fan assembly 20 and a fixing assembly 30, wherein the fixing assembly 30 cooperates with the hanger assembly 10 and the electric fan assembly 20 to fix the electric fan assembly 20 on the hanger assembly 10.

[0026] See also Figure 1 , Figure 2 as well as Figure 3 As shown, the hanger assembly 10 is installed on an indoor or outdoor load-bearing structure, for example: a roof beam of a large factory or shopping mall. The hanger assembly 10 includes a mounting seat 11 and an extension rod 12 that matches the mounting seat 11. The mounting seat 11 includes a base plate 111 and a fixed arm 112 that protrudes outward from the base plate 111. The base plate 111 is provided with a plurality of fixing holes 1111 so that the base plate 111 can be fixedly mounted on an indoor or outdoor load-bearing structure by fasteners. The fixed arm 112 is provided with a main mounting hole (not shown) and a main adjustment groove 1121 in the shape of an arc. The main mounting hole is located at one end of the fixed arm 112 close to the base plate 111, and the main adjustment groove 1121 is located at one end of the fixed arm 112 away from the base plate 111. The extension rod 12 is roughly in the shape of a hollow cuboid, and one end of the extension rod 12 close to the mounting seat 11 is provided with a secondary mounting hole 121 that matches the main mounting hole and a main adjustment hole 122 that matches the main adjustment slot 1121. The main mounting hole and the secondary mounting hole 121 are fixed together by fasteners to fix the extension rod 12 on the mounting seat 11. The main adjustment slot 1121 and the main adjustment hole 122 are fixed together by fasteners. By adjusting the matching position between the main adjustment slot 1121 and the main adjustment hole 122, the installation angle of the extension rod 12 can be adjusted. At least one first positioning portion 123 and a secondary adjustment hole 124 are provided at one end of the extension rod 12 away from the mounting seat 11.

[0027] See also Figure 3 , Figure 4 , Figure 5As shown, the electric fan assembly 20 includes a cover body 21, a motor assembly 22 matched with the cover body 21, and a fan hub 23 installed on the cover body 21. The cover body 21 includes an upper end cover 211 and a lower end cover 212 arranged opposite to the upper end cover 211. The upper end cover 211 and the lower end cover 212 are jointly arranged to form a receiving cavity 213. The upper end cover 211 is provided with an axial hole 2111 and a second limiting portion 2112. A bearing 2113 is arranged in the axial hole 2111, and the second limiting portion 2112 is evenly distributed on the periphery of the axial hole 2111. The lower end cover 212 is provided with an axial hole 2121 matched with the axial hole 2111, and a bearing 2122 is arranged in the axial hole 2121. A plurality of heat dissipation ribs 201 and reinforcing ribs 202 are arranged on the side of the lower end cover 212 facing the upper end cover 211. When the electric fan assembly 20 is running, the heat dissipation ribs 201 stir the air inside the cover 21, so that the heat generated by the motor assembly 22 is quickly transferred to the cover 21, and then dissipated to the surrounding environment through the surface of the cover 21. This arrangement can effectively enhance the heat dissipation performance of the electric fan assembly 20. The specific test data is shown in Table 1.

[0028] Table 1: Stator component temperature test

[0029]

[0030] It can be seen from Table 1 that the heat dissipation ribs 201 can effectively help the electric fan assembly 20 dissipate heat.

[0031] In this embodiment, the heat dissipation ribs 201 and the reinforcing ribs 202 are arranged on the lower end cover 212, but in other embodiments, the heat dissipation ribs 201 and the reinforcing ribs 202 can also be arranged on the side of the upper end cover 211 facing the lower end cover 212. The ratio of the height to the thickness of the heat dissipation ribs 201 is not less than 6. The ratio of the height to the thickness of the reinforcing ribs 202 is not greater than 4. In this embodiment, the thickness of the heat dissipation ribs is not greater than 2.5 mm, and the thickness of the reinforcing ribs 202 is not less than 4 mm. The number of the heat dissipation ribs 201 is not less than 12, and they are evenly distributed on the lower end cover 212 in a spoke shape. The number of the reinforcing ribs 202 is not more than 8, and they are evenly distributed on the lower end cover 212 in a spoke shape. The number of heat dissipation ribs 201 between adjacent reinforcing ribs 202 is not less than 1. Preferably, the heat dissipation ribs 201 are perpendicular to the bottom wall of the lower end cover 212, so that the fan assembly 20 can be supported to rotate forward and reverse at the same time.

[0032] Compared with the prior art, the industrial ceiling fan 100 of the present invention improves the heat dissipation performance of the electric fan assembly 20 by providing the heat dissipation ribs 201 , thereby effectively reducing the temperature of the electric fan assembly 20 .

[0033] See also Figure 2 , Figure 4 as well as Figure 6 As shown, the motor assembly 22 includes a stator assembly and a rotor assembly. The stator assembly includes a disc-shaped iron core 221 and a central shaft 222 matched with the bearing. A plurality of teeth 2211 are arranged on the periphery of the iron core 221, and grooves 2212 are formed between the adjacent teeth 2211. The ratio of the tooth width to the tooth length of the tooth is between 0.07 and 0.23. When the ratio of the tooth width to the tooth length is less than 0.07, the cross-sectional area of ​​the tooth 2211 is too small, resulting in an excessively large magnetic permeability density of the tooth 2211, thereby increasing the iron loss of the iron core 221 and reducing the overall efficiency of the motor assembly 22. The reduced efficiency of the motor assembly 22 will cause the temperature of the motor assembly 22 to increase, thereby reducing the reliability of the motor assembly 22, and even causing the motor assembly 22 to be damaged due to excessive temperature. When the ratio of tooth width to tooth length is greater than 0.23, the cross-sectional area of ​​the tooth 2211 is too large, resulting in too small magnetic conductivity of the tooth 2211, which in turn reduces the output power of the motor assembly 22, thereby reducing the reliability of the motor assembly 22, and even causing the motor assembly 22 to be damaged due to overheating. Preferably, the ratio of tooth width to tooth length is between 0.07 and 0.16. Specific test data are shown in Table 2.

[0034] Table 2: Test data of different tooth width and tooth length ratios

[0035]

[0036] Compared with the prior art, the industrial ceiling fan 100 of the present invention has a special design of tooth width and tooth height so that the industrial ceiling fan 100 has a lower input power while the output power remains unchanged, thereby reducing the energy consumption of the industrial ceiling fan 100, and further reducing the heat dissipation of the industrial ceiling fan 100, effectively improving the service life of the industrial ceiling fan 100.

[0037] See also Figure 2 As shown, the end of the central axis 222 close to the extension rod 12 is provided with a first fixing portion 2221 and a first main torque transmission portion 2222. Figure 6As shown, the rotor assembly includes an outer ring 223 and a plurality of magnetic poles 224 arranged in the outer ring 223. The outer ring 223 is installed between the upper end cover 211 and the lower end cover 212. In this embodiment, the number of the magnetic poles 224 is 60, and the number of the grooves 2212 is 54. Such an arrangement can make the motor assembly 22 have a higher motor efficiency, that is: when the output power remains unchanged, it has the minimum input power, thereby reducing the heat dissipation of the motor assembly 22. The iron core 221 is also provided with stress dispersion holes 2213 to adjust stress transfer. The stress dispersion holes 2213 are evenly distributed on the iron core 221 in the shape of spokes.

[0038] See also Figure 4 As shown, the fan hub 23 includes a base 231 and an extension portion 232 extending outward from the base 231. A first limiting portion 2311 is provided on the base 231, and the first limiting portion 2311 cooperates with the second limiting portion 2112 to fix the fan hub 23 on the upper end cover 211. A fan blade (not shown) is installed on the extension portion 232. In this embodiment, the first limiting portion 2311 is a groove, and the second limiting portion 2112 is a protrusion, but in other embodiments, the first limiting portion 2311 can also be a protrusion, and the second limiting portion 2112 can also be a groove. In this embodiment, the number of the first limiting portion 2311 and the second limiting portion 2112 is 4, and they are evenly distributed on the periphery of the bearing 2113.

[0039] See also Figure 8As shown, the fixing assembly 30 includes a connecting member 31 and a torque transmission member 32 matched with the connecting member 31. The connecting member 31 includes a bottom wall 311 and side walls 312 formed by bending and extending from both sides of the bottom wall 311. The bottom wall 311 is provided with an axial hole 3111 for the central axis 222 to pass through and a first secondary torque transmission part 3112. The side wall 312 is provided with a second positioning part 3121, a second fixing part 3122 and a secondary adjustment groove 3123, and the secondary adjustment groove 3123 is located between the second positioning part 3121 and the second fixing part 3122. The first positioning part 123 and the second positioning part 3121 match so that the connecting member 31 is fixedly installed on the extension rod 12. In this embodiment, the first positioning part 123 and the second positioning part 3121 are positioning holes, and the first positioning part 123 and the second positioning part 3121 are fixed together by fasteners. The first fixing portion 2221 and the second fixing portion 3122 cooperate with each other so that the central axis 222 is fixed on the connecting member 31. In this embodiment, the first fixing portion 2221 and the second fixing portion 3122 are fixing holes, and the first fixing portion 2221 and the second fixing portion 3122 are fixed together by fasteners. The auxiliary adjustment slot 3123 and the auxiliary adjustment hole 124 are fixed together by fasteners, so that the installation angle of the connecting member 31 can be adjusted by adjusting the matching position between the auxiliary adjustment slot 3123 and the auxiliary adjustment hole 124.

[0040] See also Figure 8 As shown, the torque transmission member 32 includes a cylinder 321 and an extension platform 322 extending radially outward from one end of the cylinder 321. The inner wall of the cylinder 321 is provided with a second main torque transmission part 3211 matched with the first main torque transmission part 2222. In this embodiment, the first main torque transmission part 2222 is a main key arranged along the axial direction of the central axis 222, and the second main torque transmission part 3211 is a main key groove matched with the main key. However, in other embodiments, the first main torque transmission part 2222 can also be a main key groove, and the second main torque transmission part 3211 can also be a main key. The side of the extension platform 322 opposite to the bottom wall 311 is provided with a second secondary torque transmission part 3221 matched with the first secondary torque transmission part 3112. In this embodiment, the first secondary torque transmission part 3112 is a secondary keyway, and the second secondary torque transmission part 3221 is a secondary key that matches the secondary keyway. However, in other embodiments, the first secondary torque transmission part 3112 may also be a secondary key, and the second secondary torque transmission part 3221 may also be a secondary keyway. In this embodiment, there are two first secondary torque transmission parts 3112, which are located on both sides of the shaft hole 3111.

[0041] Compared with the prior art, the industrial ceiling fan 100 of the present invention transmits torque through the mutual cooperation of keys and keyways, thereby effectively increasing the torque transmission area between the central axis 222 and the connecting member 31 and the torque transmission member 32, so that the connecting member 31 and the torque transmission member 32 are not easy to deform and wear, thereby greatly improving the service life of the industrial ceiling fan 100.

[0042] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. An industrial ceiling fan, comprising A cover body, on which a fan hub is mounted, the cover body comprising an upper end cover and a lower end cover arranged opposite to the upper end cover, the upper end cover and the lower end cover jointly enclose a receiving cavity, the upper end cover and the lower end cover are provided with shaft holes, a bearing is arranged in the shaft hole, and a plurality of heat dissipation ribs and reinforcing ribs are arranged on the inner side of the upper end cover or the lower end cover; and A motor assembly, the motor assembly comprising a stator assembly and a rotor assembly; the stator assembly comprising a disc-shaped iron core and a central shaft matched with the bearing; the rotor assembly comprising an outer ring and a plurality of magnetic poles arranged in the outer ring, the outer ring being installed between the upper end cover and the lower end cover; characterized in that: The core is provided with a plurality of teeth on its periphery, and grooves are formed between adjacent teeth. The number of the magnetic poles is 60, the number of the grooves is 54, and the ratio of the tooth width to the tooth height of the teeth is between 0.07 and 0.23; as well as A hanger assembly, the hanger assembly comprising a mounting seat and an extension rod matched with the mounting seat, the mounting seat comprising a base plate and a fixed arm formed by protruding outward from the base plate, the base plate is provided with a plurality of fixing holes so that the base plate can be fixedly mounted on an indoor or outdoor load-bearing structure by fasteners, the fixed arm is provided with a main mounting hole and a main adjustment slot in a circular arc shape, the main mounting hole is located at one end of the fixed arm close to the base plate, the main adjustment slot is located at one end of the fixed arm away from the base plate, the extension rod is in the shape of a hollow rectangular parallelepiped, and one end of the extension rod close to the mounting seat is provided with a secondary mounting hole matched with the main mounting hole and a main adjustment hole matched with the main adjustment slot, the main mounting hole and the secondary mounting hole are fixed together by fasteners to fix the extension rod on the mounting seat, the main adjustment slot and the main adjustment hole are fixed together by fasteners, and the installation angle of the extension rod can be adjusted by adjusting the matching position between the main adjustment slot and the main adjustment hole, and the end of the extension rod away from the mounting seat is provided with at least one first positioning portion and a secondary adjustment hole; as well as The fixing assembly includes a connecting member and a torque transmission member matched with the connecting member, the connecting member includes a bottom wall and side walls respectively bent and extended from both sides of the bottom wall, the bottom wall is provided with an axial hole for the central axis to pass through and a first secondary torque transmission part, the side wall is provided with a second positioning part, a second fixing part and a secondary adjustment groove, the secondary adjustment groove is located between the second positioning part and the second fixing part, the first positioning part and the second positioning part cooperate to make the connecting member fixedly installed on the extension rod, the first positioning part and the second positioning part are fixed together by a fastener, the first fixing part and the second fixing part cooperate to make the central axis fixed on the connecting member, the first fixing part and the second fixing part are fixed together by a fastener, the secondary adjustment groove and the secondary adjustment hole are fixed together by a fastener, so as to adjust the installation angle of the connecting member by adjusting the matching position between the secondary adjustment groove and the secondary adjustment hole; The torque transmission member comprises a cylinder and an extension platform extending outwardly from one end of the cylinder along the radial direction of the cylinder, the inner wall of the cylinder is provided with a second main torque transmission part matching with the first main torque transmission part, and the side of the extension platform opposite to the bottom wall is provided with a second secondary torque transmission part matching with the first secondary torque transmission part; The fixing assembly cooperates with the hanger assembly and the electric fan assembly to fix the electric fan assembly on the hanger assembly.

2. The industrial ceiling fan according to claim 1, characterized in that: The ratio of the tooth width to the tooth height is between 0.07 and 0.

16.

3. The industrial ceiling fan according to claim 1, characterized in that: The iron core is also provided with a plurality of stress dispersion holes.

4. The industrial ceiling fan according to claim 3, characterized in that: The stress dispersion holes are in spoke shape and are evenly distributed on the iron core.

5. The industrial ceiling fan according to claim 1, characterized in that: A fan hub is installed on the side of the upper end cover facing away from the lower end cover.

6. The industrial ceiling fan according to claim 5, characterized in that: The fan hub is provided with a first limiting portion, and the upper end cover is provided with a second limiting portion matched with the first limiting portion.

7. The industrial ceiling fan according to claim 6, characterized in that: The first limiting portion is a groove, and the second limiting portion is a protrusion.

8. The industrial ceiling fan according to claim 6, characterized in that: The first limiting portion is a protrusion, and the second limiting portion is a groove.

9. The industrial ceiling fan according to claim 6, characterized in that: The number of the first limiting parts and the second limiting parts is 4, and they are evenly distributed on the periphery of the bearing.

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