Breeze outer rotor permanent magnet synchronous generator

Abstract

The utility model discloses a breeze outer rotor permanent magnet synchronous generator, which relates to the technical field of generators and comprises a base, a rotor, a rotor, a rotor and a rotor, the hollow shaft is vertically fixed on the base; the stator is fixed on the hollow shaft; the outer rotor structure is arranged on the hollow shaft in a penetrating mode, the stator is located in the outer rotor structure, the two ends of the outer rotor structure are rotationally connected with the hollow shaft through a lower bearing and an upper bearing, and the fan blade structure is fixed to the top of the outer rotor structure. According to the small breeze generator provided by the utility model, the structural design of the vertical shaft is adopted, so that the wind power loss is reduced, the starting difficulty of the fan is reduced, and the generating efficiency of the fan is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of generators, in particular to a breeze outer rotor permanent magnet synchronous generator. Background Art

[0002] Wind energy is a clean, renewable energy source, and wind power generation has attracted widespread attention worldwide. Traditional horizontal-axis power generation equipment uses inefficient gearboxes, mechanical bearings, and synchronous generators, resulting in high wind speeds at startup, severe mechanical wear, and very low utilization rates.

[0003] Based on this, we proposed a new breeze outer rotor permanent magnet synchronous generator to solve the above problems. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the utility model provides a new breeze outer rotor permanent magnet synchronous generator.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A breeze outer rotor permanent magnet synchronous generator, comprising:

[0007] A base, the base being used to provide installation and support;

[0008] A hollow shaft, wherein the hollow shaft is vertically fixed on the base;

[0009] a stator fixed on the hollow shaft; and

[0010] The outer rotor structure is provided on the hollow shaft, the stator is located inside the outer rotor structure, the two ends of the outer rotor structure are rotatably connected to the hollow shaft through a lower bearing and an upper bearing, and the fan blade structure is fixed on the top of the outer rotor structure.

[0011] Furthermore, the outer rotor structure includes a rotor hub and a lower end cover and an upper end cover arranged at both ends of the rotor hub.

[0012] Furthermore, the lower end cover and the upper end cover are fixed to the rotor hub by bolts.

[0013] Furthermore, limiting rings are provided on opposite sides of the lower end cover and the upper end cover, and the limiting rings are fitted with the inner side of the rotor hub.

[0014] Furthermore, the base includes a bottom plate and a sleeve fixed to the bottom plate, the sleeve is adapted to the hollow shaft, and a through hole corresponding to the sleeve is opened on the bottom plate.

[0015] Furthermore, the shaft sleeve and the hollow shaft are fixed by bolts.

[0016] Furthermore, reinforcing ribs are provided between the base plate and the shaft sleeve.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The small breeze generator provided by the utility model adopts a vertical axis structural design, thereby reducing wind power loss, reducing the difficulty of starting the fan and improving the power generation efficiency of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an embodiment of the present utility model.

[0020] Reference numerals in the figures:

[0021] 1. Upper bearing; 2. Upper end cover; 3. Sealant; 4. Stator; 5. Rotor hub; 6. Lower end cover; 7. Lower bearing; 8. Hollow shaft; 9. Base. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] The embodiment of the utility model discloses a breeze outer rotor permanent magnet synchronous generator.

[0024] like Figure 1 As shown, the Breeze outer rotor permanent magnet synchronous generator includes a base 9, a hollow shaft 8, a stator 4, an outer rotor structure, a lower bearing 7, and an upper bearing 1. The base 9 is used to provide installation and support. The hollow shaft 8 is vertically fixed to the top of the base 9. The stator 4 is fixed to the hollow shaft 8. The outer rotor structure is inserted into the hollow shaft 8. The stator 4 is located inside the outer rotor structure. The ends of the outer rotor structure are rotatably connected to the hollow shaft 8 through the lower bearing 7 and the upper bearing 1. The fan blade structure is fixed to the top of the outer rotor structure.

[0025] In this embodiment, the generator adopts a vertical axis design. Wind blows on the blade structure on top of the outer rotor structure, which in turn drives the outer rotor structure to rotate, achieving wind power generation. This generator embodiment can reduce wind power loss, simplify the difficulty of wind turbine startup, and improve the wind turbine's power generation efficiency.

[0026] The outer rotor structure is further described below. The outer rotor structure includes a rotor hub 5 and a lower end cover 6 and an upper end cover 2 provided at both ends of the rotor hub 5. Preferably, the lower end cover 6 and the upper end cover 2 are provided separately from the rotor hub 5 and are fixed to the rotor hub 5 by bolts.

[0027] At the same time, in order to facilitate the assembly of the outer rotor structure, limiting rings are integrally formed on the opposite sides of the lower end cover 6 and the upper end cover 2 , and the limiting rings fit the inner side of the rotor hub 5 .

[0028] In a possible embodiment, the lower end cover 6 or the upper end cover 2 is integrally formed with the rotor hub 5 .

[0029] In this embodiment, the base 9 includes a bottom plate and a sleeve fixed to the top of the bottom plate. The base 9 is a circular structure, and the sleeve is located at the center of the base 9. The sleeve is adapted to fit the hollow shaft 8. When installing the hollow shaft 8, the hollow shaft 8 is inserted into the sleeve until the bottom of the hollow shaft 8 contacts the bottom plate, and then the hollow shaft 8 and the sleeve are fixed with bolts.

[0030] Specifically, the sleeve has multiple mounting holes evenly distributed around the circumference, at least three in number, and the hollow shaft 8 is correspondingly provided with screw holes. Bolts pass through the mounting holes and are threadedly connected to the screw holes to fix the hollow shaft 8.

[0031] In addition, a threading hole is opened on the upper part of the hollow shaft 8 for the lead wire of the stator 4 to pass through, and the threading hole is coated with sealant 3. A through hole corresponding to the shaft sleeve is opened on the bottom plate, and this through hole is used for the lead wire to pass through.

[0032] In order to enhance the overall stability, reinforcing ribs are provided between the base plate and the shaft sleeve.

[0033] In this embodiment, the hollow shaft 8 is configured as a stepped shaft, the large end of the hollow shaft 8 is inserted into the base 9, and a shaft retaining ring is installed on the hollow shaft 8, which is used to limit the lower bearing 7 and the upper bearing 1.

[0034] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A breeze outer rotor permanent magnet synchronous generator, characterized in that: include: A base (9), the base (9) is used to provide installation and support; A hollow shaft (8), wherein the hollow shaft (8) is vertically fixed on the base (9); a stator (4), said stator (4) being fixed on the hollow shaft; and An outer rotor structure is provided, wherein the outer rotor structure is passed through a hollow shaft (8), the stator (4) is located inside the outer rotor structure, the two ends of the outer rotor structure are rotatably connected to the hollow shaft (8) via a lower bearing (7) and an upper bearing (1), and the fan blade structure is fixed on the top of the outer rotor structure.

2. A breeze outer rotor permanent magnet synchronous generator according to claim 1, characterized in that: The outer rotor structure comprises a rotor hub (5) and a lower end cover (6) and an upper end cover (2) arranged at both ends of the rotor hub (5).

3. A breeze outer rotor permanent magnet synchronous generator according to claim 2, characterized in that: The lower end cover (6) and the upper end cover (2) are fixed to the rotor hub (5) by bolts.

4. A breeze outer rotor permanent magnet synchronous generator according to claim 3, characterized in that: Limiting rings are provided on opposite sides of the lower end cover (6) and the upper end cover (2), and the limiting rings are fitted with the inner side of the rotor hub (5).

5. The breeze outer rotor permanent magnet synchronous generator according to claim 1, characterized in that: The base (9) comprises a bottom plate and a shaft sleeve fixed on the bottom plate, the shaft sleeve is adapted to the hollow shaft (8), and a through hole corresponding to the shaft sleeve is provided on the bottom plate.

6. The breeze outer rotor permanent magnet synchronous generator according to claim 5, characterized in that: The shaft sleeve and the hollow shaft (8) are fixed by bolts.

7. The breeze outer rotor permanent magnet synchronous generator according to claim 5, characterized in that: Reinforcing ribs are provided between the bottom plate and the shaft sleeve.

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