Heat dissipation type alternating-current generator

Abstract

The utility model relates to the technical field of generators, in particular to a heat dissipation type alternating-current generator, which comprises a shell, a front end cover and a rear end cover are detachably arranged on the shell, a rotating shaft is rotatably arranged between the front end cover and the rear end cover, a rotor is arranged on the rotating shaft, and the rotor is connected with the shell. At least two mounting plates are uniformly distributed between the front end cover and the rear end cover, a certain gap is formed between the side wall of one mounting plate and the side wall of the other mounting plate, a stator is inserted between the mounting plates, and the mounting plates are provided with arc-shaped grooves for increasing the contact area with the stator. A certain gap is formed between the mounting plate and the inner side of the shell, the front end cover and the rear end cover are provided with clamping grooves matched with the mounting plate, the stator is provided with clamping strips matched with the gap between the side walls of the mounting plate, and positioning devices used for positioning the mounting plate and the stator are further arranged among the mounting plate, the front end cover and the rear end cover.

Description

Technical Field

[0001] This utility model relates to the field of generator technology, and in particular to a heat dissipation type AC generator. Background Technology

[0002] A generator is a mechanical device based on the laws of electromagnetic induction and electromagnetic force, which converts other forms of energy into electrical energy. It usually contains a rotor and a stator. By controlling the rotation of the rotor to cut magnetic field lines, electromagnetic power is generated to achieve the purpose of energy conversion. During the conversion, a lot of heat is also generated, which affects the lifespan. For this reason, most generators are equipped with cooling fans to dissipate heat from the stator and rotor. However, in most generators, the stator is in close contact with the outer casing, which prevents air from flowing from the outside of the stator and affects the efficiency of the stator's heat dissipation. Utility Model Content

[0003] Therefore, in view of the above problems, this utility model proposes a heat dissipation type AC generator.

[0004] To achieve the above objectives, the present invention provides a heat-dissipating AC generator, comprising a housing, a detachable front cover and a rear cover, a rotating shaft rotatably disposed between the front cover and the rear cover, a rotor mounted on the rotating shaft, at least two mounting plates evenly distributed between the front cover and the rear cover, with a certain gap between the side wall of one mounting plate and the side wall of the other mounting plate, a stator inserted between the mounting plates, an arc-shaped groove on the mounting plate to increase the contact area with the stator, a certain gap between the mounting plate and the inner side of the housing, a slot matching the mounting plate on the front cover and the rear cover, a locking strip matching the gap between the side walls of the mounting plates on the stator, and a positioning device for positioning the mounting plate and the stator between the mounting plate, the front cover, and the rear cover.

[0005] A further improvement is that the positioning device includes: several heat dissipation strips are provided on the side of the mounting plate away from the stator, one end of the heat dissipation strip abuts against the front end cover and the other end abuts against the rear end cover, and abutting blocks corresponding to the locking strips are provided on the side of the front end cover and the rear end cover near the stator.

[0006] A further improvement is that the arc-shaped groove is coated with a heat dissipation layer to ensure that the heat from the stator can be stably transferred to the mounting plate.

[0007] A further improvement is that the mounting plate is also equipped with a heat storage device to slow down the rate of temperature rise.

[0008] A further improvement is that the heat storage device includes: a plurality of cooling holes on one end of the mounting plate located at the rear end cover; the cooling holes are filled with a cooling medium to reduce the weight of the mounting plate and slow down the rate of temperature rise; and the cooling holes are also provided with a sealing cap to prevent leakage of the cooling medium.

[0009] A further improvement is that an active heat dissipation device is provided between the rotating shaft and the front and rear covers.

[0010] A further improvement is that the active heat dissipation device includes: several vent holes on both the front and rear covers; a heat dissipation impeller on the rotating shaft for rotating with the rotating shaft; an outer shell extending outward to protect the heat dissipation impeller; and several air inlets on the outer shell corresponding to the heat dissipation impeller to enhance air intake efficiency.

[0011] A further improvement is that the outer shell is also provided with several reinforcing ribs to enhance its strength.

[0012] A further improvement is that threaded holes are provided at both ends of the reinforcing rib, and through holes corresponding to the threaded holes are provided on both the front end cover and the rear end cover. Positioning screws are provided on both the front end cover and the rear end cover, which pass through the through holes and are threadedly connected to the threaded holes, for pressing the front end cover and the rear end cover onto the reinforcing rib.

[0013] A further improvement is that two bases are provided on each side of the outer casing, and the bases are provided with several strip holes for fixing the generator to the workbench to prevent it from moving during operation.

[0014] The advantages and beneficial effects of this utility model are as follows:

[0015] 1. The structure is simple and the air circulation is strong. The stator is positioned by the mounting plate, so that the stator is suspended in the shell and does not directly contact the shell. Air can flow out from both inside and outside the stator, which greatly improves the air circulation space and allows the air to flow very smoothly, thereby carrying away heat and avoiding the occurrence of heat accumulation.

[0016] 2. It is also equipped with a heat storage device, which reduces the weight of the generator and slows down the temperature rise, greatly improving the service life of the generator and reducing the difficulty of transportation. The cooling holes are located on the rear cover, which makes it convenient for maintenance personnel to inspect and replace the cooling medium.

[0017] 3. High safety: Since the stator and mounting plate do not directly contact the outer casing, the temperature of the outer casing is not high, which reduces the possibility of workers being burned by accidentally touching the generator casing during operation and improves the safety of the generator.

[0018] 4. The stator is easy to assemble and disassemble. It is installed inside the housing by insertion, and can be easily separated when maintenance is required, which improves the convenience of maintenance. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a heat-dissipating AC generator according to the present invention. Figure 1 ;

[0020] Figure 2 This is a three-dimensional schematic diagram of a heat-dissipating AC generator according to the present invention. Figure 2 ;

[0021] Figure 3 This is a three-dimensional schematic diagram of a heat-dissipating AC generator without its outer casing.

[0022] Figure 4 This is a schematic diagram of a heat-dissipating AC generator housing according to the present invention;

[0023] Figure 5 This is a three-dimensional schematic diagram of a heat-dissipating AC generator mounting plate according to the present invention;

[0024] Figure 6 This is a front sectional view of a heat-dissipating AC generator according to the present invention;

[0025] Figure 7 This is a three-dimensional schematic diagram of the front cover and mounting plate of a heat-dissipating AC generator according to the present invention;

[0026] In the diagram: 1. Outer shell; 2. Front cover; 3. Rear cover; 4. Rotating shaft; 5. Rotor; 6. Mounting plate; 7. Stator; 8. Arc groove; 9. Slot; 10. Engaging strip; 11. Heat dissipation strip; 12. Abutment block; 13. Cooling hole; 14. Sealing cover; 15. Vent hole; 16. Heat dissipation impeller; 17. Air inlet; 18. Reinforcing rib; 19. Threaded hole; 20. Through hole; 21. Positioning screw; 22. Base; 23. Strip hole. Detailed Implementation

[0027] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0028] like Figures 1-7As shown, a heat-dissipating AC generator includes a housing 1. A front cover 2 and a rear cover 3 are detachably provided on the housing 1. A rotating shaft 4 is rotatably provided between the front cover 2 and the rear cover 3. A rotor 5 is provided on the rotating shaft 4. At least two mounting plates 6 are evenly distributed between the front cover 2 and the rear cover 3, and there is a certain gap between the side wall of the mounting plate 6 and the side wall of the other mounting plate 6. A stator 7 is inserted between the mounting plates 6. An arc-shaped groove 8 is provided on the mounting plate 6 to increase the contact area with the stator 7. There is a certain gap between the mounting plate 6 and the inner side of the housing 1. The front cover 2 and the rear cover 3 are provided with slots 9 that match the mounting plates 6. The stator 7 is provided with a locking strip 10 that matches the gap between the side walls of the mounting plates 6. A positioning device for positioning the mounting plates 6 and the stator 7 is also provided between the mounting plates 6, the front cover 2 and the rear cover 3.

[0029] The front cover 2 and the rear cover 3 are also provided with rotating bearings (not shown in the figure), and the rotating shaft 4 is connected to the inner ring of the rotating bearing.

[0030] In order to position the mounting plate 6 and the stator 7, enhance heat dissipation, and strengthen safety, the positioning device includes: a plurality of heat dissipation strips 11 on the side of the mounting plate 6 away from the stator 7, one end of each heat dissipation strip 11 abutting against the front end cover 2 and the other end abutting against the rear end cover 3; and abutting blocks 12 corresponding to the locking strips 10 are provided on the side of the front end cover 2 and the rear end cover 3 near the stator 7.

[0031] To reduce the processing difficulty of mounting plate 6 and ensure that the heat of stator 7 can be smoothly transferred to mounting plate 6, a heat dissipation layer (not shown in the figure) is also coated on the arc groove 8 to ensure that the heat of stator 7 can be stably transferred to mounting plate 6. The heat dissipation layer is specifically a thermally conductive silicone grease layer.

[0032] In order to slow down the rate of temperature rise of the generator, prevent overheating, and reduce the weight of the generator, the mounting plate 6 is also provided with a heat storage device for slowing down the rate of temperature rise. The heat storage device includes: a plurality of cooling holes 13 on one end of the mounting plate 6 located at the rear end cover 3, the cooling holes 13 being filled with a cooling medium to reduce the weight of the mounting plate 6 and slow down the rate of temperature rise, and the cooling holes 13 being provided with a sealing cover 14 to prevent leakage of the cooling medium.

[0033] The cooling medium can be cooling oil. Cooling oil has a higher specific heat capacity than metal, so it can absorb and store a large amount of heat, thereby reducing the rate of temperature rise and preventing the temperature from soaring in a short time.

[0034] To enhance heat dissipation, an active heat dissipation device is provided between the rotating shaft 4 and the front cover 2 and the rear cover 3. The active heat dissipation device includes: several vent holes 15 on both the front cover 2 and the rear cover 3; a heat dissipation impeller 16 on the rotating shaft 4 for rotating with the rotating shaft 4; the outer shell 1 extending outward to protect the heat dissipation impeller 16; and several air inlets 17 on the outer shell 1 corresponding to the heat dissipation impeller 16 to enhance air intake efficiency.

[0035] In order to strengthen the outer shell 1 and prevent the outer shell 1 from being too heavy, the outer shell 1 is also provided with a number of reinforcing ribs 18 to enhance the strength of the outer shell 1.

[0036] To facilitate the installation and disassembly of the front cover 2 and the rear cover 3, threaded holes 19 are provided on both the front and rear ends of the reinforcing rib 18. The front cover 2 and the rear cover 3 are provided with through holes 20 corresponding to the threaded holes 19. The front cover 2 and the rear cover 3 are provided with positioning screws 21 that pass through the through holes 20 and are threadedly connected to the threaded holes 19, for pressing the front cover 2 and the rear cover 3 onto the reinforcing rib 18.

[0037] To facilitate the positioning of the generator, two bases 22 are provided on both sides of the outer casing 1. The bases 22 are provided with several strip holes 23 for fixing the generator on the workbench to prevent it from moving during operation.

[0038] Working principle: During assembly, first install the rotating shaft 4 with rotor 5 on the front end cover 2, then install the front end cover 2 on the outer shell 1, and then install the heat dissipation impeller 16 and other components in sequence. Then install the mounting plate 6 on the front end cover 2 so that the heat dissipation strip 11 abuts against the front end cover 2. Then insert the stator 7 into the arc groove 8 between the mounting plate 6 so that the locking strip 10 abuts against the side wall of the mounting plate 6. Finally, align the rear end cover 3 with the mounting plate 6 and install it on the outer shell 1 to complete the installation.

[0039] During operation, the rotating shaft 4 rotates under the action of external rotating parts, thereby driving the rotor 5 to cut magnetic field lines. The heat generated during the cutting process is transferred from the stator 7 to the mounting plate 6. Some of the heat is absorbed by the cooling medium to slow down the temperature rise, while the other part of the heat is transferred to the heat sink. At the same time, the heat dissipation impeller 16 rotates together with the rotating shaft 4, causing air to enter from the air inlet 17 and the front end of the outer casing 1. After passing through the vent 15 on the front end cover 2, the air flows to the stator 7 and the rotor 5. Part of the air flows out from between the stator 7 and the rotor 5, and part of the air flows out from between the mounting plate 6 and the outer casing 1. Finally, the air flows out from the vent 15 on the rear end cover 3, thereby carrying away the heat inside the outer casing 1 and controlling the temperature of the generator.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions above are only illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A heat-dissipating AC generator, comprising a housing, wherein a front cover and a rear cover are detachably provided on the housing, a rotating shaft is rotatably provided between the front cover and the rear cover, and a rotor is provided on the rotating shaft, characterized in that: At least two mounting plates are evenly distributed between the front cover and the rear cover, and there is a certain gap between the side wall of the mounting plate and the side wall of the other mounting plate. A stator is inserted between the mounting plates. The mounting plate is provided with an arc groove to increase the contact area with the stator. There is a certain gap between the mounting plate and the inner side of the outer shell. The front cover and the rear cover are provided with slots that match the mounting plates. The stator is provided with a locking strip that matches the gap between the side walls of the mounting plates. A positioning device for positioning the mounting plates and the stator is also provided between the mounting plates, the front cover and the rear cover.

2. A heat-dissipating AC generator according to claim 1, characterized in that: The positioning device includes: a plurality of heat dissipation strips on the side of the mounting plate away from the stator, one end of the heat dissipation strip abutting against the front end cover and the other end abutting against the rear end cover; and abutting blocks corresponding to the locking strips are provided on the side of the front end cover and the rear end cover near the stator.

3. A heat-dissipating AC generator according to claim 1, characterized in that: The arc-shaped groove is also coated with a heat dissipation layer to ensure that the heat of the stator can be stably transferred to the mounting plate.

4. A heat-dissipating AC generator according to claim 1, characterized in that: The mounting plate is also equipped with a heat storage device for slowing down the rate of temperature rise.

5. A heat-dissipating AC generator according to claim 4, characterized in that: The heat storage device includes: a plurality of cooling holes on one end of the mounting plate located at the rear end cover; the cooling holes are filled with a cooling medium to reduce the weight of the mounting plate and slow down the rate of temperature rise; and the cooling holes are also provided with a sealing cap to prevent leakage of the cooling medium.

6. A heat-dissipating AC generator according to claim 1, characterized in that: An active heat dissipation device is provided between the rotating shaft and the front and rear covers.

7. A heat-dissipating AC generator according to claim 6, characterized in that: The active heat dissipation device includes: a number of vent holes on both the front and rear covers; a heat dissipation impeller on the rotating shaft for rotating with the rotating shaft; an outer shell extending outward to protect the heat dissipation impeller; and a number of air inlets corresponding to the heat dissipation impeller on the outer shell to enhance air intake efficiency.

8. A heat-dissipating AC generator according to claim 1, characterized in that: The outer shell is also equipped with several reinforcing ribs to enhance its strength.

9. A heat-dissipating AC generator according to claim 8, characterized in that: The reinforcing rib has threaded holes at both ends. The front and rear covers have through holes corresponding to the threaded holes. The front and rear covers have positioning screws that pass through the through holes and are threaded to the threaded holes to press the front and rear covers onto the reinforcing rib.

10. A heat-dissipating AC generator according to claim 1, characterized in that: Two bases are provided on each side of the outer casing. The bases have several slotted holes for fixing the generator to the workbench to prevent it from moving during operation.

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