Disc type motor rotor disc capable of reducing rotor heating and processing method thereof

Abstract

The invention discloses a disc-type motor rotor disc capable of reducing rotor heating, and the disc-type motor rotor disc comprises a rotor disc part which is disposed on a rotating shaft of a disc-type motor, the rotor disc part comprises a rotor disc and a heat dissipation enhancement part, the rotor disc is disposed on the rotating shaft, and the heat dissipation enhancement part follows the rotor disc; the magnetic steel pieces are arranged on the rotor disc, and the multiple magnetic steel pieces are uniformly distributed on the rotor disc in the circumferential direction and interact with a stator of the disc type motor. The motor is reasonable in structural design, small in eddy current loss, low in rotor disc heating, high in heat dissipation efficiency, low in manufacturing process control difficulty and low in manufacturing cost.

Description

Technical Field

[0001] The present invention relates to the technical field of disc motors, and more particularly to a disc motor rotor disk capable of reducing rotor heating and a processing method thereof. Background Art

[0002] Due to the structural characteristics of the disc motor, it is favored by the industrial motor field and the breeze power generation field. The disc motor is flat in design and flexible in layout for customers, but its cooling effect is limited, which troubles its development into the high-power field.

[0003] At present, the mainstream disc motor rotor cooling adopts indirect cooling, that is, the heat generated by the rotor disc and magnetic steel is transferred to the end cover and shaft for cooling through air heat exchange and heat conduction. The cooling effect is limited. When the power of the motor is large, its heat dissipation effect is not ideal, which restricts the application of disc motors in high-power products. In addition, the mainstream disc motor rotor magnetic steel adopts segmented bonding to reduce the eddy current loss of the magnetic steel at high speed. When the magnetic steel size is large, the more segments, the more difficult the process control will be, and the cost will be high.

[0004] Therefore, designing a rotor disk and processing method that effectively reduces the heat generation under high speed and high power has important technical breakthroughs and practical value. Summary of the invention

[0005] In order to overcome the above defects, the present invention provides a disc motor rotor disk and a processing method thereof that can reduce rotor heating, and specifically adopts the following technical solutions:

[0006] A disc-type motor rotor disk capable of reducing rotor heating comprises:

[0007] A rotor disc component, which is arranged on the rotating shaft of the disc motor, the rotor disc component comprises a rotor disc and a heat dissipation enhancement component, the rotor disc is arranged on the rotating shaft, and the heat dissipation enhancement component moves with the rotor disc;

[0008] A magnetic steel piece is arranged on the rotor disk. A plurality of the magnetic steel pieces are evenly distributed on the rotor disk along the circumferential direction and interact with the stator of the disc motor.

[0009] Preferably, the rotor disk is fastened to the rotating shaft; a magnetic steel mounting through hole is arranged on the disk surface of the rotor disk, and carbon fiber avoidance grooves are arranged on both end surfaces of the magnetic steel mounting through hole to facilitate the installation of the magnetic steel part.

[0010] Preferably, there are multiple magnetic steel mounting through holes, and the multiple magnetic steel mounting through holes are evenly distributed along the circumferential direction; a second limiting groove is provided on the disk surface between two adjacent magnetic steel mounting through holes, and a magnetic steel pressure plate is installed in the second limiting groove to limit the magnetic steel parts embedded in the magnetic steel mounting through holes.

[0011] Preferably, the heat dissipation enhancement component includes fan blades, and the fan blades move on the outer annular surface of the rotor disk, and a plurality of the fan blades are evenly distributed around the circumference of the rotor disk.

[0012] Preferably, the magnetic steel part comprises a permanent magnet and a T-shaped stacking assembly, and the T-shaped stacking assembly is arranged on the permanent magnet.

[0013] Preferably, the T-shaped stack assembly comprises a T-shaped stack and a carbon fiber tape, and the carbon fiber tape is wound around the T-shaped stack to improve the overall connection strength of the T-shaped stack.

[0014] Preferably, the T-shaped stack comprises silicon steel sheets, and a plurality of the silicon steel sheets are stacked one by one into one.

[0015] Preferably, the upper and lower surfaces of the T-shaped laminate are provided with wrapping grooves, and the depth of the wrapping grooves is determined according to different electromagnetic schemes; the carbon fiber tape is wound in the wrapping grooves to improve the overall connection strength of the T-shaped laminate.

[0016] Preferably, two T-shaped lamination assemblies are provided, and the two T-shaped lamination assemblies are bonded to the two end surfaces of the permanent magnet respectively.

[0017] Preferably, the method for processing a disc-type motor rotor disk capable of reducing rotor heating comprises:

[0018] 1) manufacturing the silicon steel sheet by stamping or wire cutting;

[0019] 2) laminating the plurality of silicon steel sheets one by one into the T-shaped lamination;

[0020] 3) using the carbon fiber tape to wind the T-shaped stack along the wrapping groove to form the T-shaped stack assembly; after the winding is completed, high-temperature heating treatment is required to accelerate the curing and forming of the carbon fiber tape;

[0021] 4) Apply glue to the bottom planes of the two cured T-shaped laminated assemblies respectively, apply glue evenly, bond them to the N / S surfaces of the permanent magnets respectively, hold them with tooling, and take them out after the glue is completely cured to make the magnetic steel parts;

[0022] 5) The plurality of magnetic steel parts are embedded in the plurality of magnetic steel installation through holes one by one in accordance with the design sequence, glue is applied to the gap between the rotor disk and the magnetic steel parts, the magnetic steel parts are pre-fixed by a magnetic steel pressure plate, and finally the magnetic steel pressure plate, the magnetic steel parts and the rotor disk are assembled into a whole by rivets or bolts.

[0023] The present invention has at least the following beneficial effects:

[0024] 1) The disc-type motor rotor disk and its processing method capable of reducing rotor heating of the present invention have reasonable structural design, small eddy current loss, low rotor disk heating, high heat dissipation efficiency, low difficulty in manufacturing process control and low manufacturing cost;

[0025] 2) The disc motor rotor disc and its processing method capable of reducing rotor heating of the present invention are provided with a magnetic steel part, and the magnetic steel part adopts a magnetic steel sandwich solution, that is, a T-type lamination-permanent magnet-T-type lamination method, which can reduce the generation of eddy current loss, reduce the heat source, and the risk of demagnetization of the protective magnetic steel of the T-type lamination;

[0026] 3) The disc-type motor rotor disk and its processing method capable of reducing rotor heating of the present invention are provided with a heat dissipation enhancement member, and the heat dissipation enhancement member can accelerate the heat conduction inside the motor and improve the cooling efficiency when rotating on the rotor disk.

[0027] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of one end surface of a rotor disk of a disk-type motor capable of reducing rotor heating of the present invention;

[0029] Figure 2 The present invention is a disc-type motor rotor disc capable of reducing rotor heating. Figure 1 A partial enlarged view of middle A;

[0030] Figure 3 It is a schematic diagram of the three-dimensional structure of the other end surface of the rotor disk of the disc-type motor capable of reducing the heat generation of the rotor of the present invention;

[0031] Figure 4 The present invention is a disc-type motor rotor disc capable of reducing rotor heating. Figure 3 A partial enlarged view of B in the middle;

[0032] Figure 5 It is a front view of a rotor disk in a disc-type motor rotor disk capable of reducing rotor heating of the present invention;

[0033] Figure 6 The present invention is a disc-type motor rotor disc capable of reducing rotor heating. Figure 5 A partial enlarged view of middle C;

[0034] Figure 7 It is a schematic diagram of the three-dimensional structure of a rotor disk in a disc-type motor rotor disk capable of reducing rotor heating according to the present invention;

[0035] Figure 8 The present invention is a disc-type motor rotor disc capable of reducing rotor heating. Figure 7 A partial enlarged view of D in the middle;

[0036] Fig. 9 This is a front view of a magnetic steel part in a rotor disk of a disc-type motor capable of reducing rotor heating according to the present invention;

[0037] Fig.10 This is a front view of the end of a magnetic steel part in a rotor disk of a disk-type motor capable of reducing rotor heating according to the present invention;

[0038] Fig.11 It is a top view of a three-dimensional structure schematic diagram of a magnetic steel part in a rotor disk of a disc-type motor capable of reducing rotor heating according to the present invention;

[0039] Fig.12 It is a schematic diagram of the three-dimensional structure of one end of a magnetic steel part in a rotor disk of a disc-type motor capable of reducing the heat generation of the rotor according to the present invention;

[0040] Fig.13 It is a schematic diagram of the three-dimensional structure of the other end of the magnetic steel part in the rotor disk of the disc-type motor capable of reducing the heat generation of the rotor of the present invention;

[0041] Fig.14 It is a schematic diagram of the three-dimensional structure of one end of a T-shaped lamination in a disc-type motor rotor disk capable of reducing rotor heating according to the present invention;

[0042] Fig.15 The other end of the three-dimensional structure diagram of the T-shaped lamination in the rotor disk of the disc-type motor capable of reducing the heat generation of the rotor of the present invention is shown

[0043] Fig.16 It is a schematic diagram of the three-dimensional structure of one side of the silicon steel sheet in the rotor disk of the disc-type motor capable of reducing the heat generation of the rotor according to the present invention;

[0044] Fig.17 It is a schematic diagram of the three-dimensional structure of the other side of the silicon steel sheet in the rotor disk of the disc-type motor capable of reducing the heat generation of the rotor according to the present invention.

[0045] Among them: 1-rotor disk, 2-hollow through hole, 3-installation through hole, 4-magnetic steel installation through hole, 5-carbon fiber avoidance groove, 6-first limit groove, 7-second limit groove, 8-rivet hole, 9-rivet, 10-magnetic steel pressure plate, 11-fan blade, 12-permanent magnet, 13-T-type stacking assembly, 14-carbon fiber belt, 15-silicon steel sheet, 16-buckle point structure, 17-wrapping groove, 18-magnetic steel part. DETAILED DESCRIPTION

[0046] The technical solution of the present invention will be described in detail below by way of embodiments with reference to the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0047] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another type of association object relationship, indicating that there can be two relationships. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship.

[0048] according to Figure 1-Figure 17 As shown, a disc motor rotor disk capable of reducing rotor heating and a processing method thereof include a rotor disk component and a magnetic steel component 18, wherein the rotor disk component is arranged on the rotating shaft of the disc motor, and the magnetic steel component 18 is arranged on the rotor disk component. The rotor disk component includes a rotor disk 1 and a heat dissipation enhancement component, wherein the rotor disk 1 is arranged on the rotating shaft, and the heat dissipation enhancement component is arranged on the rotor disk 1.

[0049] The rotor disk 1 is generally in the shape of an annular plate, and a mounting through hole 3 is provided near the inner ring of the rotor disk 1, and a plurality of the mounting through holes 3 are evenly distributed around the inner ring. After the rotor disk 1 is sleeved on the rotating shaft through the inner ring, the rotor disk 1 is fastened to the rotating shaft by screws passing through the mounting through holes 3. The rotor disk 1 is also provided with a hollow through hole 2 near the inner ring, and the hollow through hole 2 is in the shape of a long circular arc hole, and a plurality of the hollow through holes 2 are evenly distributed around the outer side of the mounting through hole 3 along the circumferential direction.

[0050] A magnetic steel mounting through hole 4 is provided on the disk surface of the rotor disk 1, and the magnetic steel mounting through hole 4 is in the shape of a trapezoidal hole. The carbon steel mounting through hole is located between the outer ring surface of the rotor disk 1 and the hollow through hole 2. Furthermore, transition arcs are provided at the corners of the magnetic steel mounting through hole 4 to prevent stress concentration and improve the convenience of embedding the magnetic steel part 18. Carbon fiber avoidance grooves 5 are provided on the lower bottom edge and the upper bottom edge of the magnetic steel mounting through hole 4 to accommodate the carbon fiber tape 14 wound and tied on the magnetic steel part 18. Furthermore, four carbon fiber avoidance grooves 5 are provided, two of which are distributed on the lower bottom edge, and the other two of which are distributed on the upper bottom edge to accommodate the carbon fiber tape 14 wound and tied on the magnetic steel part 18.

[0051] A first limiting groove 6 is provided on one end surface of the waistline edge on both sides of the magnetic steel mounting through hole 4, and the groove depth of the first limiting groove 6 is less than the thickness of the rotor disk 1. Then, when the magnetic steel component 18 is embedded in the magnetic steel mounting through hole 4, one end surface of the magnetic steel component 18 is limited by the first limiting groove 6 to prevent the magnetic steel component 18 from moving axially in the magnetic steel mounting through hole 4.

[0052] There are sixteen magnetic steel mounting through holes 4, and the sixteen magnetic steel mounting through holes 4 are evenly distributed along the circumferential direction. A second limiting groove 7 is provided on the disk surface between two adjacent magnetic steel mounting through holes 4, and the length of the second limiting groove 7 is greater than the trapezoidal height of the magnetic steel mounting through hole 4. Furthermore, a rivet hole 8 is provided on the bottom surface of each second limiting groove 7, so that the magnetic steel pressure plate 10 can be fastened in the second limiting groove 7 by the rivet 9, thereby axially limiting the other end surface of the magnetic steel part 18 to prevent the magnetic steel part 18 from moving axially in the magnetic steel mounting through hole 4.

[0053] The heat dissipation enhancement member includes a blade 11, one side of which is fixedly arranged on the outer annular surface of the rotor disk 1 and moves with it, and the radial line of the rotor disk 1 is located on the plane of the blade 11. A plurality of blades 11 are evenly distributed around the rotor disk 1. When the blade 11 rotates with the rotor disk 1, the air flow in the inner cavity of the motor can be increased, thereby increasing the heat dissipation effect.

[0054] The magnetic steel part 18 includes a permanent magnet 12 and a T-shaped lamination assembly 13, and the T-shaped lamination assembly 13 is arranged on the permanent magnet 12. The permanent magnet 12 is in the shape of a trapezoidal plate, and the thickness of the permanent magnet 12 is less than the depth of the first limiting groove 6. The T-shaped lamination assembly 13 includes a T-shaped lamination and a carbon fiber strip 14, and the carbon fiber strip 14 is arranged on the T-shaped lamination. The T-shaped lamination includes a silicon steel sheet 15, and a plurality of the silicon steel sheets 15 are stacked one by one. The stacking method of the plurality of silicon steel sheets 15 can be a buckle process or a self-adhesive process.

[0055] Furthermore, the silicon steel sheet 15 is made into a T-shape by stamping or wire cutting, and the plurality of silicon steel sheets 15 have the same height, the same grooves, and different widths. The cross section of the silicon steel sheet 15 is provided with 1-3 buckle point structures 16, and the buckle point structures 16 can be rectangular or circular in shape. The T-shaped lamination formed by stacking a plurality of silicon steel sheets 15 is generally trapezoidal, and the axial projection size of the T-shaped lamination is the same as the axial projection size of the permanent magnet 12. It should be noted that the plurality of silicon steel sheets 15 are stacked one by one into the T-shaped lamination, and the last silicon steel sheet 15 stacked according to the buckle points is specially treated, and is directly punched out in order to engage with the previous buckle points and not protrude.

[0056] The grooves formed by laminating the silicon steel sheets 15 on both sides of the upper surface of the T-shaped laminate constitute the third limiting grooves of the T-shaped laminate, and the depth of the third limiting grooves is the same as the depth of the second limiting grooves 7. The upper and lower surfaces of the T-shaped laminate are provided with wrapping grooves 17 for facilitating the winding of the carbon fiber tape 14. There are two wrapping grooves 17, and the depth of the wrapping grooves 17 is determined according to different electromagnetic schemes. Furthermore, the approximate depth of each wrapping groove 17 is between 0.1-0.4 mm.

[0057] The carbon fiber tape 14 is wound in the wrapping groove 17 to improve the stability of the T-shaped stack and prevent the T-shaped stack from bursting during assembly and operation. Furthermore, the right angles of the wrapping groove 17 on the T-shaped stack are rounded to prevent the carbon fiber tape 14 from being cut.

[0058] It should be noted that after the carbon fiber tape 14 is wound in the wrapping groove 17, the carbon fiber tape 14 will protrude from the end face of the T-shaped stack. When the magnetic steel part 18 is embedded in the magnetic steel mounting through hole 4, the protruding part of the carbon fiber tape 14 will be correspondingly embedded in the carbon fiber avoidance groove 5 to prevent it from being isolated by vibration during the assembly process and operation.

[0059] The two T-shaped lamination assemblies 13 are provided, and the two T-shaped lamination assemblies 13 are respectively bonded to the two end surfaces of the permanent magnet 12. The T-shaped lamination assembly 13 can reduce the generation of eddy current loss and heat source by adopting the magnetic steel sandwich scheme, that is, the T-shaped lamination-permanent magnet-T-shaped lamination mode, and the risk of demagnetization of the protective magnetic steel of the T-shaped lamination.

[0060] It should be noted that after the plurality of magnetic steel parts 18 are respectively and correspondingly embedded in the first limiting groove 6 in the magnetic steel installation through hole 4, the third limiting groove is connected and corresponds to the side of the second limiting groove 7. The plurality of magnetic steel pressing plates 10 are respectively and correspondingly embedded in the second limiting groove 7 and the third limiting groove, and the magnetic steel pressing plate 10 is fastened in the second limiting groove 7 by the rivet 9 or bolt, thereby limiting the magnetic steel parts 18.

[0061] The method for processing a disc-type motor rotor disk capable of reducing rotor heating comprises:

[0062] 1) manufacturing the silicon steel sheet 15 by stamping or wire cutting;

[0063] 2) laminating the plurality of silicon steel sheets 15 one by one into the T-shaped lamination;

[0064] 3) using the carbon fiber tape 14 to wind the T-shaped laminate along the wrapping groove 17 to form the T-shaped laminate assembly 13; after the winding is completed, a high-temperature heating treatment is required to accelerate the curing and forming of the carbon fiber tape 14;

[0065] 4) Apply glue to the bottom planes of the two cured T-shaped laminated assemblies 13, apply glue evenly, and bond them to the N / S surfaces of the permanent magnets 12, respectively, and hold them with tooling, and take them out after the glue is completely cured to form the magnetic steel part 18;

[0066] 5) The plurality of magnetic steel parts 18 are sequentially embedded in the plurality of magnetic steel mounting through holes 4 one by one in accordance with the design sequence, glue is applied to the gap between the rotor disk 1 and the magnetic steel parts 18, the magnetic steel parts 18 are pre-fixed by the magnetic steel pressing plate 10, and finally the magnetic steel pressing plate 10, the magnetic steel parts 18 and the rotor disk 1 are assembled into a whole by rivets 9 or bolts.

[0067] It should be noted that, as another option, the rotor disk can be driven to rotate by externally dragging the rotating shaft, thereby cutting the magnetic flux lines of the stator of the generator to achieve the power generation function.

[0068] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A disc-type motor rotor disk capable of reducing rotor heating, characterized in that: include: A rotor disc component, which is arranged on the rotating shaft of the disc motor, the rotor disc component comprises a rotor disc and a heat dissipation enhancement component, the rotor disc is arranged on the rotating shaft, and the heat dissipation enhancement component moves with the rotor disc; A magnetic steel piece is arranged on the rotor disk. A plurality of the magnetic steel pieces are evenly distributed on the rotor disk along the circumferential direction and interact with the stator of the disc motor.

2. The disc-type motor rotor disk capable of reducing rotor heating according to claim 1, characterized in that: The rotor disk is set and fastened on the rotating shaft; a magnetic steel installation through hole is arranged on the disk surface of the rotor disk, and carbon fiber avoidance grooves are arranged on both end surfaces of the magnetic steel installation through hole to facilitate the installation of the magnetic steel part.

3. The disc-type motor rotor disk capable of reducing rotor heating according to claim 2, characterized in that: There are multiple magnetic steel mounting through holes, and the multiple magnetic steel mounting through holes are evenly distributed along the circumferential direction; a second limiting groove is provided on the disk surface between two adjacent magnetic steel mounting through holes, and a magnetic steel pressure plate is installed in the second limiting groove to limit the magnetic steel parts embedded in the magnetic steel mounting through holes.

4. The disc-type motor rotor disk capable of reducing rotor heating according to any one of claims 1 to 3, characterized in that: The heat dissipation enhancement member includes fan blades, which move on the outer annular surface of the rotor disk, and a plurality of the fan blades are evenly distributed around the circumference of the rotor disk.

5. The disc-type motor rotor disk capable of reducing rotor heating according to any one of claims 1 to 3, characterized in that: The magnetic steel part comprises a permanent magnet and a T-shaped lamination assembly, and the T-shaped lamination assembly is arranged on the permanent magnet.

6. The disc-type motor rotor disk capable of reducing rotor heating according to claim 5, characterized in that: The T-shaped stack assembly includes a T-shaped stack and a carbon fiber tape, wherein the carbon fiber tape is wound around the T-shaped stack to improve the overall connection strength of the T-shaped stack.

7. The disc-type motor rotor disk capable of reducing rotor heating according to claim 6, characterized in that: The T-shaped stack includes silicon steel sheets, and a plurality of the silicon steel sheets are stacked one by one into one.

8. The disc-type motor rotor disk capable of reducing rotor heating according to claim 7, characterized in that: The upper and lower surfaces of the T-shaped laminate are provided with wrapping grooves, and the depth of the wrapping grooves is determined according to different electromagnetic schemes; the carbon fiber tape is wound in the wrapping grooves to improve the overall connection strength of the T-shaped laminate.

9. The disc-type motor rotor disk capable of reducing rotor heating according to claim 8, characterized in that: There are two T-shaped lamination assemblies, and the two T-shaped lamination assemblies are bonded to the two end surfaces of the permanent magnet respectively.

10. The method for processing a disc-type motor rotor disk capable of reducing rotor heating according to claim 9, characterized in that: include: 1) manufacturing the silicon steel sheet by stamping or wire cutting; 2) laminating the plurality of silicon steel sheets one by one into the T-shaped lamination; 3) using the carbon fiber tape to wind the T-shaped laminate along the wrapping groove to form the T-shaped laminate assembly; After winding is completed, high temperature heating treatment is required to accelerate the curing and forming of the carbon fiber tape; 4) Glue is applied to the bottom planes of the two cured T-shaped laminated assemblies respectively, and after being evenly applied, they are bonded to the N / S surfaces of the permanent magnets respectively, and are held by tooling, and are taken out after the glue is completely cured to form the magnetic steel parts; 5) The plurality of magnetic steel parts are embedded in the plurality of magnetic steel installation through holes one by one in accordance with the design sequence, glue is applied to the gap between the rotor disk and the magnetic steel parts, the magnetic steel parts are pre-fixed by a magnetic steel pressure plate, and finally the magnetic steel pressure plate, the magnetic steel parts and the rotor disk are assembled into a whole by rivets or bolts.

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