A commercial ceiling fan with an adjustable vane permanent magnet synchronous motor

Abstract

The present invention relates to the technical field related to commercial ceiling fans of permanent magnet synchronous motors, and discloses a blade-adjustable commercial ceiling fan of a permanent magnet synchronous motor, which includes a permanent magnet synchronous motor. The upper end of the stator shaft of the permanent magnet synchronous motor is fixedly provided with a hoisting bracket, and the hoisting bracket is installed on a cement floor slab through expansion screws. The upper end of the rotor of the permanent magnet synchronous motor is covered with a plurality of blade assemblies; the present invention can smoothly and slowly adjust the angle of the blade assemblies through a driving assembly, so that the angle of the blade assemblies can be adjusted according to the air volume requirement, improving the use effect of the blade assemblies; furthermore, the larger the angle of rotation of the first blade, the greater the degree of extrusion between the elliptical plate and the rubber rod, so that the distance between the two second blades moves greater, so as to be able to change the width of the blade assembly according to the angle of rotation of the first blade, improving the use effect of the commercial ceiling fan of the permanent magnet synchronous motor.

Description

Technical Field

[0001] The present invention belongs to the technical field related to commercial ceiling fans of permanent magnet synchronous motors. More specifically, it particularly relates to a commercial ceiling fan with adjustable blades of a permanent magnet synchronous motor. Background Art

[0002] Commercial ceiling fans of permanent magnet synchronous motors are large fans that are becoming increasingly popular in large spaces such as factory workshops, warehouses, hospitals, and supermarkets. They mainly include several major parts such as a hoisting component, a motor component, and a blade component. Among them, in order to increase the air volume generated by the rotation of a commercial ceiling fan of a permanent magnet synchronous motor, the installation angle of the blades is generally adjusted to adjust the air volume of the ceiling fan. However, the commercial ceiling fans of permanent magnet synchronous motors in the prior art have the following defects:

[0003] In the prior art, the angle of the blades in a commercial ceiling fan of a permanent magnet synchronous motor is usually fixed, so the angle of the blades cannot be adjusted arbitrarily, resulting in the same air volume generated by the rotation of the commercial ceiling fan of a permanent magnet synchronous motor, which affects the use effect of the commercial ceiling fan of a permanent magnet synchronous motor;

[0004] In the prior art, the fixing effect of the commercial ceiling fan of a permanent magnet synchronous motor after adjusting the blade angle is not good, and it is easy for the blades to rotate when generating air volume, making it difficult to limit and fix the blades, thus affecting the use of the commercial ceiling fan of a permanent magnet synchronous motor;

[0005] In the prior art, the adjustment range of changing the air volume by only adjusting the angle of the blades in a commercial ceiling fan of a permanent magnet synchronous motor is relatively limited, and it cannot meet the needs when the adjustment range is large, so further adjustment of the blades is required.

[0006] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and a commercial ceiling fan with adjustable blades of a permanent magnet synchronous motor is provided, in order to achieve a more practical and valuable purpose. Summary of the Invention

[0007] The present invention provides a commercial ceiling fan with adjustable blades of a permanent magnet synchronous motor to overcome the above defects in the prior art.

[0008] The purpose and efficacy of a commercial ceiling fan with adjustable blades of a permanent magnet synchronous motor according to the present invention are achieved by the following specific technical means:

[0009] A commercially available ceiling fan with adjustable blades for a permanent magnet synchronous motor, comprising: a permanent magnet synchronous motor, a hoisting bracket is fixedly arranged at the upper end of the stator shaft of the permanent magnet synchronous motor, the hoisting bracket is installed on a cement floor slab through expansion screws, and a plurality of blade assemblies are arranged on the upper end cover of the rotor of the permanent magnet synchronous motor; the blade assembly includes a first blade, a plurality of first blade mounting plates are fixedly arranged in a circumferential array on the upper end cover of the rotor of the permanent magnet synchronous motor, a second blade mounting plate is fixedly arranged on each first blade, the first blade mounting plate is in rotational contact with the second blade mounting plate, a fixing block is fixedly arranged on the lower side of one end of the second blade mounting plate, a rotating shaft is fixedly arranged on the lower side of the fixing block, a housing is fixedly arranged on the lower side of the first blade mounting plate, a driving assembly for driving the rotating shaft to rotate is arranged inside the housing, a cylinder is fixedly arranged inside the housing, the rotating shaft rotates inside the cylinder, a rubber sleeve is sleeved on the outer side of the rotating shaft, the inner wall of the rubber sleeve is fixedly connected with the outer side of the rotating shaft, the outer wall of the rubber sleeve is in frictional contact with the inner wall of the cylinder, a plurality of rubber bumps are fixedly arranged in a circumferential array on the inner side of the cylinder, a plurality of grooves are arranged in a circumferential array on the outer side of the rubber sleeve, each rubber bump is in pressing contact with the outer side of the rubber sleeve, and each rubber bump is limited in the corresponding groove, a controller is fixedly arranged inside the housing, and the inside of the controller includes a signal receiving module and a control module.

[0010] Further technical solution, a flow guide plate is fixedly arranged at the end of the first blade, and the flow guide plate has a streamlined structure, which effectively increases the air volume and reduces the noise.

[0011] Further technical solution, the driving assembly includes a small motor, the small motor is fixed inside the housing, a circular plate is fixedly arranged at the output end of the small motor, a rotating plate is fixedly arranged on the outer side of one end of the rotating shaft, a sliding groove is arranged on the rotating plate, a connecting rod is arranged between the rotating plate and the circular plate, one end of the connecting rod slides in the sliding groove, and the other end of the connecting rod is rotatably connected with the circular plate.

[0012] Further technical solution, a second blade is arranged on each side of each first blade, a connecting piece is fixedly arranged at each end of each second blade, and both connecting pieces slide inside the first blade. Each connecting piece is made of a flexible high molecular long fiber material.

[0013] Further technical solution, a plurality of partition plates are fixedly arranged at intervals inside the first blade, a fixing seat is fixedly arranged on each side of each partition plate, a push plate slides inside each fixing seat on the opposite side in the opposite direction, the two push plates are respectively fixedly connected with the two second blades, and a spring is arranged between the two push plates and the inside of the two fixing seats respectively.

[0014] According to a further technical solution, a fixing rod is fixedly provided at one end of the shell, one end of the fixing rod extends to the inside of the first blade, and one end of the fixing rod is fixedly provided with an elliptical plate.

[0015] According to a further technical solution, two push rods are symmetrically fixed on the inner sides of the two second blades, and a rubber rod is fixed on one end of each of the two push rods facing the elliptical plate, and one end of each of the two rubber rods is in sliding contact with the outer side of the elliptical plate.

[0016] According to a further technical solution, each of the first blade and the second blade is made of an airfoil-shaped design and a polymer long fiber material.

[0017] According to a further technical solution, a fixing cover is sleeved on the outer side of the fixed connection between the first blade and the second blade mounting plate, and the fixing cover is fixed to the first blade by bolts.

[0018] According to a further technical solution, a mounting plate is fixedly provided on the upper end cover of the rotor of the permanent magnet synchronous motor, and the plurality of first blade mounting plates are all located between the upper end cover of the rotor of the permanent magnet synchronous motor and the mounting plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] A commercial ceiling fan with adjustable blades of a permanent magnet synchronous motor of the present invention is provided with a driving assembly, wherein a circular plate in the driving assembly is slowly rotated to drive a connecting rod to rotate, and the connecting rod rotates to cooperate with one end of the connecting rod to slide in a slide slot, thereby driving a rotating plate to slowly swing back and forth; the swinging of the rotating plate drives the rotating shaft to rotate, and the rotation of the rotating shaft drives the first blade to rotate through a fixed block and a second blade mounting plate to adjust the angle, thereby being able to adjust the angle of the first blade according to the need for air volume, thereby improving the use effect of the fan blade assembly;

[0021] A blade-adjustable permanent magnet synchronous motor commercial ceiling fan of the present invention is provided with a fan blade assembly, which firstly makes friction contact between the outer side of a rubber sleeve and the inner side of a cylinder, so that the rotating shaft rotates smoothly and slowly, and then makes extrusion contact between the outer side of the rubber sleeve and a plurality of rubber protrusions, so that the rotating shaft rotates smoothly and slowly, and avoids the rotating shaft rotating too fast to affect the accuracy of adjusting the angle of the first blade; finally, the plurality of rubber protrusions are respectively limited in the corresponding plurality of grooves, so that the first blade after the angle is adjusted is limited and fixed, and the first blade is prevented from being offset after the angle is adjusted;

[0022] A commercially - used ceiling fan with a blade - adjustable permanent - magnet synchronous motor. The outer side of the elliptical plate is in sliding contact with several rubber rods. When the first blade rotates, it drives the rubber rods to move, thereby squeezing and compressing the rubber rods to generate elastic force. The elastic force generated by the rubber rods acts on the push rods, thereby pushing the second blades to move. The movement of the second blades drives several push plates to slide in several fixed seats respectively, so that the two second blades move in opposite directions and cooperate with four connecting pieces to slide in the first blade, so as to change the width of the blade assembly, thereby increasing the air volume generated by the rotation of the blade assembly. Moreover, the larger the angle of rotation of the first blade is, the greater the degree of extrusion between the elliptical plate and the rubber rods is, so that the distance between the two second blades moves larger, so as to be able to change the width of the blade assembly according to the rotation angle of the first blade, improving the use effect of the commercially - used ceiling fan with a permanent - magnet synchronous motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following - described drawings are only some embodiments of the invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] The following further illustrates the invention with reference to the drawings and embodiments.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic top - view structure diagram of the blade assembly of the present invention;

[0027] Figure 3 It is Figure 2 The sectional structure diagram at A - A in

[0028] Figure 4 It is Figure 3 The sectional structure diagram at B - B in

[0029] Figure 5 It is Figure 3 The partial enlarged - view structure diagram at E in

[0030] Figure 6 It is Figure 3 The sectional structure diagram at C - C in

[0031] Figure 7 It is Figure 6 The sectional structure diagram at D - D in

[0032] Figure 8 It is Figure 6Schematic diagram of the enlarged view of the partial structure at position F in the [Chinese context].

[0033] Explanation of the reference numerals:

[0034] Permanent magnet synchronous motor 10, mounting plate 11, hoisting bracket 12, first blade 13, first blade mounting plate 14, second blade mounting plate 15, fixing cover 16, guide plate 17, second blade 18, fixing block 19, rotating shaft 20, rotating plate 21, sliding groove 22, housing 23, circular plate 24, small motor 25, connecting rod 26, cylinder 27, rubber sleeve 28, rubber bump 29, groove 30, fixing rod 31, elliptical plate 32, push rod 33, rubber rod 34, connecting piece 35, partition plate 36, fixing seat 37, push plate 38, spring 39, controller 40. Detailed implementation manners

[0035] The following further describes the implementation manners of the present invention in detail in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0036] In the description of the present invention, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0038] As shown in the attached Figure 1 to the attached Figure 8 figures:

[0039] The present invention provides a commercially available ceiling fan with adjustable blades for a permanent magnet synchronous motor.

[0040] Referring to the attached Figure 1 to the attached Figure 8, including: a permanent magnet synchronous motor 10, a hoisting bracket 12 is fixedly arranged at the upper end of the stator shaft of the permanent magnet synchronous motor 10, the hoisting bracket 12 is installed on the cement floor slab through expansion screws, and a plurality of fan blade assemblies are arranged on the upper end cover of the rotor of the permanent magnet synchronous motor 10; the fan blade assembly includes a first blade 13, and a plurality of first blade mounting plates 14 are fixedly arranged in a circumferential array on the upper end cover of the rotor of the permanent magnet synchronous motor 10. A second blade mounting plate 15 is fixedly arranged on each first blade 13, and the first blade mounting plate 14 is in rotational contact with the second blade mounting plate 15. A fixing block 19 is fixedly arranged on the lower side of one end of the second blade mounting plate 15, a rotating shaft 20 is fixedly arranged on the lower side of the fixing block 19, a housing 23 is fixedly arranged on the lower side of the first blade mounting plate 14, a driving assembly for driving the rotating shaft 20 to rotate is arranged inside the housing 23, a cylinder 27 is fixedly arranged inside the housing 23, the rotating shaft 20 rotates inside the cylinder 27, a rubber sleeve 28 is sleeved on the outer side of the rotating shaft 20, the inner wall of the rubber sleeve 28 is fixedly connected with the outer side of the rotating shaft 20, the outer wall of the rubber sleeve 28 is in frictional contact with the inner wall of the cylinder 27, a plurality of rubber bumps 29 are fixedly arranged in a circumferential array on the inner side of the cylinder 27, a plurality of grooves 30 are arranged in a circumferential array on the outer side of the rubber sleeve 28, each rubber bump 29 is in extrusion contact with the outer side of the rubber sleeve 28, and each rubber bump 29 is limited in the corresponding groove 30. A controller 40 is fixedly arranged inside the housing 23, and the inside of the controller 40 includes a signal receiving module and a control module.

[0041] Preferably, a flow guide plate 17 is fixedly arranged at the end of the first blade 13, and the flow guide plate 17 has a streamlined structure, which effectively increases the air volume and reduces the noise.

[0042] Preferably, the driving assembly includes a small motor 25, the small motor 25 is fixed inside the housing 23, a circular plate 24 is fixedly arranged at the output end of the small motor 25, a rotating plate 21 is fixedly arranged on the outer side of one end of the rotating shaft 20, a sliding groove 22 is arranged on the rotating plate 21, a connecting rod 26 is arranged between the rotating plate 21 and the circular plate 24, one end of the connecting rod 26 slides in the sliding groove 22, and the other end of the connecting rod 26 is rotatably connected with the circular plate 24.

[0043] Preferably, a second blade 18 is arranged on each side of each first blade 13, a connecting member 35 is fixedly arranged at each end of each second blade 18, both connecting members 35 slide inside the first blade 13, and each connecting member 35 is made of a flexible high molecular long fiber material.

[0044] Preferably, a number of partition plates 36 are fixedly arranged at intervals inside the first blade 13. A fixing seat 37 is fixedly arranged on each side of each partition plate 36. A push plate 38 is slidably arranged on one side of each of the two fixing seats 37 in opposite directions. The two push plates 38 are respectively fixedly connected to the two second blades 18. A spring 39 is arranged inside the two fixing seats 37 and connected to the two push plates 38 respectively.

[0045] Preferably, a fixing rod 31 is fixedly arranged at one end of the housing 23. One end of the fixing rod 31 extends into the first blade 13, and an elliptical plate 32 is fixedly arranged at one end of the fixing rod 31.

[0046] Preferably, two push rods 33 are symmetrically and fixedly arranged on the inner sides of the two second blades 18. A rubber rod 34 is fixedly arranged at one end of each two push rods 33 facing the elliptical plate 32. One end of each two rubber rods 34 is in sliding contact with the outer side of the elliptical plate 32.

[0047] Preferably, each of the first blades 13 and the second blades 18 is designed in an airfoil shape and made of high molecular long fiber material.

[0048] Preferably, a fixing cover 16 is sleeved on the outer side of the fixed connection between the first blade 13 and the second blade mounting plate 15, and the fixing cover 16 is fixed on the first blade 13 by bolts.

[0049] Preferably, a mounting plate 11 is fixedly arranged on the upper end cover of the rotor of the permanent magnet synchronous motor 10, and a number of first blade mounting plates 14 are all located between the upper end cover of the rotor of the permanent magnet synchronous motor 10 and the mounting plate 11.

[0050] The specific usage method of the present invention:

[0051] When the permanent magnet synchronous motor 10 is powered on and started, the first blade 13 is driven to rotate through the cooperation of the first blade mounting plate 14 and the second blade mounting plate 15, and a number of first blades 13 rotate to generate air volume; when it is necessary to adjust the angle of the first blade 13, the staff transmits a signal to the controller 40 through the remote control, and then the controller 40 controls the small motor 25 to start; the small motor 25 starts to drive the circular plate 24 to rotate slowly, the circular plate 24 rotates slowly to drive the connecting rod 26 to rotate slowly, and the connecting rod 26 rotates slowly and cooperates with the sliding of one end of the connecting rod 26 in the sliding groove 22, so as to drive the rotating plate 21 to swing back and forth slowly; the swinging of the rotating plate 21 drives the rotating shaft 20 to rotate, and the rotating shaft 20 rotates to drive the first blade 13 to rotate and adjust the angle through the fixing block 19 and the second blade mounting plate 15, so that the angle of the first blade 13 can be quickly adjusted according to the need of air volume, and the use effect of the blade assembly is improved.

[0052] Among them, the rotation of the rotating shaft 20 drives the rubber sleeve 28 to rotate within the cylinder 27. First, the outer side of the rubber sleeve 28 is in frictional contact with the inner side of the cylinder 27, so that the rotating shaft 20 rotates smoothly and slowly. Then, the outer side of the rubber sleeve 28 is in extrusion contact with a number of rubber bumps 29, further enabling the rotating shaft 20 to rotate smoothly and slowly, preventing the rotating shaft 20 from rotating too fast and affecting the accuracy of the angle adjustment of the first blade 13. Finally, a number of rubber bumps 29 are respectively limited within corresponding grooves 30, thereby playing a role in limiting and fixing the first blade 13 after the angle adjustment, preventing the first blade 13 from shifting after the angle adjustment.

[0053] Meanwhile, when the first blade 13 makes an angle adjustment, the rotation of the first blade 13 drives the rotation of two second blades 18. The rotation of the second blades 18 drives the rotation and cooperation of two push rods 33 and two rubber rods 34 with the elliptical plate 32 fixed, so that the longer outer diameter end of the elliptical plate 32 is in extrusion contact with one of the rubber rods 34, causing the rubber rod 34 to be extruded and compressed to generate elastic force. The elastic force generated by the rubber rod 34 acts on the push rod 33, thereby pushing the second blade 18 to move. The movement of the second blade 18 drives a number of push plates 38 to slide within a number of fixed seats 37 respectively, so that the two second blades 18 move in opposite directions and cooperate with four connecting pieces 35 to all slide and contact within the first blade 13, facilitating the change of the width of the blade assembly, and thus being able to increase the air volume generated by the rotation of the blade assembly. Among them, the greater the angle of rotation adjustment of the first blade 13, the greater the degree of extrusion between the elliptical plate 32 and the rubber rod 34, so that the distance between the two second blades 18 moves greater, facilitating the change of the width of the blade assembly according to the rotation angle of the first blade 13 and improving the use effect of the permanent magnet synchronous motor commercial ceiling fan. The sliding of the push plate 38 within the fixed seat 37 exerts a stretching effect on the spring 39, so that the spring 39 is stretched to generate elastic force, which is beneficial for driving the second blade 18 to move back to its original position subsequently.

[0054] In the blade adjustable permanent magnet synchronous motor commercial ceiling fan of the present invention, a driving assembly is provided. The slow rotation of the circular plate 24 within the driving assembly drives the rotation of the connecting rod 26. The rotation of the connecting rod 26 cooperates with one end of the connecting rod 26 to slide within the chute 22, thereby driving the rotating plate 21 to swing slowly back and forth; the swinging of the rotating plate 21 drives the rotation of the rotating shaft 20. The rotation of the rotating shaft 20 drives the first blade 13 to rotate and adjust the angle through the fixing block 19 and the second blade mounting plate 15, so that the angle of the first blade 13 can be adjusted according to the need of the air volume, improving the use effect of the blade assembly.

[0055] In a commercial ceiling fan with a blade-adjustable permanent magnet synchronous motor according to the present invention, a blade assembly is provided. First, the outer side of the rubber sleeve 28 is in frictional contact with the inner side of the cylinder 27, so that the rotating shaft 20 rotates smoothly and slowly. Then, the outer side of the rubber sleeve 28 is in extrusion contact with a plurality of rubber bumps 29, so as to further make the rotating shaft 20 rotate smoothly and slowly, avoiding the situation that the too-fast rotation of the rotating shaft 20 affects the accuracy of the angle adjustment of the first blade 13. Finally, a plurality of rubber bumps 29 are respectively limited in corresponding grooves 30, so as to limit and fix the first blade 13 after the angle adjustment, avoiding the situation that the first blade 13 deviates after the angle adjustment.

[0056] In a commercial ceiling fan with a blade-adjustable permanent magnet synchronous motor according to the present invention, the outer side of the elliptical plate 32 is in sliding contact with a plurality of rubber rods 34, and the rotation of the first blade 13 drives the rubber rods 34 to move, so as to compress the rubber rods 34 to generate elastic force. The elastic force generated by the rubber rods 34 acts on the push rod 33, so as to push the second blade 18 to move. The movement of the second blade 18 drives a plurality of push plates 38 to slide in a plurality of fixed seats 37 respectively, so that the two second blades 18 move in opposite directions and cooperate with four connecting pieces 35 to slide in the first blade 13, so as to change the width of the blade assembly, thereby increasing the air volume generated by the rotation of the blade assembly. Moreover, the larger the angle adjusted by the rotation of the first blade 13 is, the greater the degree of extrusion between the elliptical plate 32 and the rubber rods 34 is, so that the distance between the two second blades 18 moves is greater, so as to be able to change the width of the blade assembly according to the rotation angle of the first blade 13, improving the use effect of the commercial ceiling fan with a permanent magnet synchronous motor.

[0057] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better illustrate the principles of the present invention and its practical applications, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific purposes.

Claims

1. A commercial ceiling fan with adjustable blades and permanent magnet synchronous motor, characterized in that: It comprises a permanent magnet synchronous motor, a hanging bracket is fixedly provided at the upper end of the stator shaft of the permanent magnet synchronous motor, the hanging bracket is installed on the cement floor slab by means of expansion screws, a plurality of fan blade assemblies are fixedly provided on the upper end cover of the rotor of the permanent magnet synchronous motor; the fan blade assembly comprises a first blade, a plurality of first blade mounting plates are fixedly provided in a circumferential array on the upper end cover of the rotor of the permanent magnet synchronous motor, a second blade mounting plate is fixedly provided on each of the first blades, the first blade mounting plate is in rotational contact with the second blade mounting plate, a fixing block is fixedly provided on the lower side of one end of the second blade mounting plate, a rotating shaft is fixedly provided on the lower side of the fixing block, a shell is fixedly provided on the lower side of the first blade mounting plate, and the shell A driving assembly for driving the rotating shaft to rotate is provided inside the shell, a cylinder is fixedly provided inside the shell, the rotating shaft rotates inside the cylinder, a rubber sleeve is sleeved on the outer side of the rotating shaft, the inner wall of the rubber sleeve is fixedly connected to the outer side of the rotating shaft, the outer wall of the rubber sleeve is in frictional contact with the inner wall of the cylinder, a plurality of rubber protrusions are fixedly provided in a circumferential array on the inner side of the cylinder, a plurality of grooves are provided in a circumferential array on the outer side of the rubber sleeve, each of the rubber protrusions is in compression contact with the outer side of the rubber sleeve, and each of the rubber protrusions is limited in a corresponding groove, a controller is fixedly provided inside the shell, and a signal receiving module and a control module are included inside the controller; A second blade is provided on both sides of each first blade, and a connecting piece is fixedly provided at both ends of each second blade. Both connecting pieces slide inside the first blade, and each connecting piece is made of a flexible polymer long fiber material. A plurality of partitions are fixedly arranged at intervals inside the first blade, a fixed seat is fixedly arranged on both sides of each partition, a push plate is slidably arranged on one side of the two fixed seats in opposite directions, the two push plates are fixedly connected to the two second blades, and the two push plates are connected to the inside of the two fixed seats with a spring; A fixing rod is fixedly disposed at one end of the housing, one end of the fixing rod extends to the interior of the first blade, and one end of the fixing rod is fixedly disposed at one end of the fixing rod; Two push rods are symmetrically fixed on the inner sides of the two second blades, and one end of each of the two push rods facing the elliptical plate is fixed with a rubber rod, and one end of each of the two rubber rods is in sliding contact with the outer side of the elliptical plate.

2. A commercial ceiling fan with adjustable blades of permanent magnet synchronous motor according to claim 1, characterized in that: A guide plate is fixedly provided at the end of the first blade, and the guide plate has a streamlined structure, which effectively increases the air volume and reduces noise.

3. The commercial ceiling fan with adjustable blades of permanent magnet synchronous motor according to claim 1, characterized in that: The driving assembly includes a small motor, which is fixed in a shell. A circular plate is fixed at the output end of the small motor. A rotating plate is fixed on the outer side of one end of the rotating shaft. A sliding groove is provided on the rotating plate. A connecting rod is provided between the rotating plate and the circular plate. One end of the connecting rod slides in the sliding groove, and the other end of the connecting rod is rotatably connected to the circular plate.

4. The commercial ceiling fan with adjustable blades of permanent magnet synchronous motor according to claim 1, characterized in that: Each of the first blade and the second blade is designed in an airfoil shape and is made of high molecular long fiber material.

5. The commercial ceiling fan with adjustable blades of permanent magnet synchronous motor according to claim 1, characterized in that: A fixing cover is sleeved on the outer side of the fixed connection between the first blade and the second blade mounting plate, and the fixing cover is fixed to the first blade by bolts.

6. The commercial ceiling fan with adjustable blades of permanent magnet synchronous motor according to claim 1, characterized in that: The upper end cover of the rotor of the permanent magnet synchronous motor is fixedly provided with a mounting plate, and the first blade mounting plates are all located between the upper end cover of the rotor of the permanent magnet synchronous motor and the mounting plate.

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