Permanent magnet with good high-temperature-resistant effect
By setting heat dissipation blocks on the inner wall of the rotor core and the circumferential side of the mounting ring, and by setting a heat absorption layer and multiple coatings on the surface of the permanent magnet column, the problem of permanent magnet failure under high temperature environment is solved, and the high temperature resistance performance is improved.
Patent Information
- Application Number
- CN202520000701.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-02
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-01-02
AI Technical Summary
Existing permanent magnets are prone to failure in high-temperature environments, resulting in reduced or lost magnetism and affecting motor performance.
Heat dissipation blocks are installed on the inner wall of the rotor core and the circumferential side of the mounting ring. Heat dissipation is achieved through heat dissipation grooves and positioning grooves. A heat-absorbing layer and multiple coatings are installed on the surface of the permanent magnet column to improve its high-temperature resistance.
It effectively reduces the temperature rise of permanent magnets, improves the high-temperature resistance of permanent magnets, prevents the loss of magnetism, and extends service life.
Smart Images
Figure CN223666117U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to permanent magnet technical field, specifically, relate to a kind of permanent magnet with good high-temperature resistance effect. BACKGROUND
[0002] Permanent magnet refers to the open circuit state can long-term keep higher residual magnetism magnet, used as rotor in permanent magnet motor, permanent magnet is also called hard magnet, not easy to demagnetize, also not easy to be magnetized, but if permanent magnet is heated to exceed Curie temperature, or located in the environment of reverse high magnetic field intensity, its magnetism will also reduce or disappear. Some magnets have brittleness, may be broken at high temperature.
[0003] Permanent magnet is necessary component in permanent magnet motor, motor generates eddy current when working, and permanent magnet temperature rises due to eddy current, causes permanent magnet magnetic loss, influences motor performance, permanent magnet is installed in the inside of rotor core in long plate shape in prior art, and the temperature inside continues to rise in use process, the magnetism of permanent magnet can be irreversibly disappeared, thereby leading to its permanent failure.
[0004] Therefore we make improvement to this, propose a kind of permanent magnet with good high-temperature resistance effect. INVENTION CONTENTS
[0005] The utility model aims at: permanent magnet is installed in the inside of rotor core in long plate shape in prior art, and the temperature inside continues to rise in use process, the magnetism of permanent magnet can be irreversibly disappeared, thereby leading to its permanent failure.
[0006] In order to realize the above-mentioned invention purpose, the utility model provides the following technical scheme:
[0007] A kind of permanent magnet with good high-temperature resistance effect to improve the above-mentioned problem.
[0008] The application is as follows:
[0009] Including rotor core, the inside both sides of the rotor core are equipped with magnetized block, the outside of the magnetized block is provided with mounting bolt, the inside of the magnetized block is equipped with multiple permanent magnet columns, the middle part of the rotor core is equipped with mounting plate, the both sides of the mounting plate are equipped with mounting ring, and the inner wall of the rotor core and the circumferential side of mounting ring are provided with heat dissipation assembly.
[0010] By being equipped with first heat sink and second heat sink on the inner wall of rotor core and the circumferential side of mounting ring, the permanent magnet column in the inside of magnetized block can be cooled through the second heat dissipation groove and first heat dissipation groove of the two sides of first heat sink and second heat sink, so as to reduce the case that the temperature of permanent magnet column in the inside of magnetized block continues to rise, improve the high-temperature resistance effect of the permanent magnet column.
[0011] As a preferred implementation form of the permanent magnet with good high-temperature resistance effect provided by the utility model, the heat dissipation assembly comprises a plurality of first heat dissipation blocks arranged in a circumferential array on the inner wall of the rotor core.
[0012] As a preferred implementation form of the permanent magnet with good high-temperature resistance effect provided by the utility model, first heat dissipation grooves are formed on the outer side of the first heat dissipation block and the second heat dissipation block, and a plurality of second heat dissipation grooves that are in communication with the first heat dissipation grooves are formed on the side of the first heat dissipation block and the second heat dissipation block.
[0013] As a preferred implementation form of the permanent magnet with good high-temperature resistance effect provided by the utility model, a plurality of first positioning grooves that are matched with the first heat dissipation blocks are formed in a circumferential array on the circumferential side of the magnetizing block, and a plurality of second positioning grooves that are matched with the second heat dissipation blocks are formed in a circumferential array on the inner wall of the magnetizing block.
[0014] As a preferred implementation form of the permanent magnet with good high-temperature resistance effect provided by the utility model, a plurality of installation grooves are formed between the first positioning grooves and the second positioning grooves, and the permanent magnet column is installed in the installation groove.
[0015] As a preferred implementation form of the permanent magnet with good high-temperature resistance effect provided by the utility model, a plurality of threaded grooves are formed on one side of the mounting plate, a plurality of through grooves are formed on one side of the magnetizing block, and the mounting bolt is screwed into the threaded groove through the through groove.
[0016] As a preferred implementation form of the permanent magnet with good high-temperature resistance effect provided by the utility model, the permanent magnet column comprises a magnetic core body located in the middle part, a heat absorption layer is arranged on the circumferential side of the magnetic core body, and a plurality of heat dissipation holes are formed in the middle part of the heat absorption layer.
[0017] As a preferred implementation form of the permanent magnet with good high-temperature resistance effect provided by the utility model, an epoxy plating layer is arranged on the circumferential side of the heat absorption layer, a heat insulation layer is arranged on the circumferential side of the epoxy plating layer, an alloy plating layer is arranged on the circumferential side of the heat insulation layer, and an anti-scratch layer is arranged on the circumferential side of the alloy plating layer.
[0018] Compared with the prior art, the utility model has the beneficial effects that: the first heat dissipation blocks and the second heat dissipation blocks are arranged on the inner wall of the rotor core and the circumferential side of the mounting ring, so that the permanent magnet column in the magnetizing block can be cooled through the second heat dissipation grooves and the first heat dissipation grooves on the two sides of the first heat dissipation blocks and the second heat dissipation blocks, thereby reducing the situation that the temperature of the permanent magnet column in the magnetizing block continues to rise, and improving the high-temperature resistance effect of the permanent magnet column. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1A structure schematic diagram of the permanent magnet body with good high-temperature resistance effect provided in the present application is shown in the figure.
[0020] Figure 2 A structure schematic diagram of the permanent magnet body with good high-temperature resistance effect provided in the present application is shown in the figure.
[0021] Figure 3 A structure schematic diagram of the permanent magnet rotor core provided in the present application is shown in the figure.
[0022] Figure 4 A structure schematic diagram of the magnetized block of the permanent magnet body with good high-temperature resistance effect provided in the present application is shown in the figure.
[0023] Figure 5 A structure schematic diagram of the permanent magnet column of the permanent magnet body with good high-temperature resistance effect provided in the present application is shown in the figure.
[0024] Indicated in the figure:
[0025] 1, rotor core; 2, magnetized block; 3, mounting bolt; 4, permanent magnet column; 5, mounting plate; 6, mounting ring; 7, first heat dissipation block; 8, second heat dissipation block; 9, first heat dissipation groove; 10, second heat dissipation groove; 11, threaded groove; 12, through groove; 13, first positioning groove; 14, second positioning groove; 15, mounting groove; 16, magnetic core body; 17, heat absorption layer; 18, heat dissipation hole; 19, epoxy plating layer; 20, heat insulation layer; 21, alloy plating layer; 22, scratch-resistant layer. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments.
[0027] Therefore, the following detailed description of the embodiments of the present application is not intended to limit the scope of the claimed present application, but only represents some embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.
[0028] It should be noted that the embodiments in the present application and the features and technical schemes in the embodiments can be combined with each other without conflict.
[0029] It should be noted that: similar labels and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0030] In the description of the utility model, it needs to explain, the orientation or position relation indicated by the terms "upper", "lower" and the like is based on the orientation or position relation shown in the drawings, or is the orientation or position relation that the product of the application is usually placed when using, or is the orientation or position relation that the person skilled in the art usually understands, these terms are only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.In addition, the terms "first", "second" and the like are only used for differentiation, and cannot be understood as indicating or implying relative importance.
[0031] In order for the person skilled in the art to better understand the utility model scheme, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings.
[0032] It should be noted that the embodiments in the utility model and the features and technical solutions in the embodiments can be combined with each other without conflict.
[0033] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.
[0034] Embodiment 1
[0035] Please refer to Figures 1-5 A high-temperature-resistant permanent magnet, comprising: a rotor core 1, both sides of the inside of the rotor core 1 are provided with magnetized blocks 2, the outside of the magnetized blocks 2 is provided with mounting bolts 3, the inside of the magnetized blocks 2 is provided with a plurality of permanent magnet columns 4, the middle of the rotor core 1 is provided with a mounting plate 5, both sides of the mounting plate 5 are provided with mounting rings 6, and the inner wall of the rotor core 1 and the circumferential side of the mounting ring 6 are provided with heat dissipation assemblies. The heat dissipation assembly comprises a plurality of first heat dissipation blocks 7 arranged in a circumferential array on the inner wall of the rotor core 1, and a plurality of second heat dissipation blocks 8 arranged in a circumferential array on the circumferential side of the mounting ring 6. First heat dissipation grooves 9 are formed in the outer sides of the first heat dissipation blocks 7 and the second heat dissipation blocks 8, and a plurality of second heat dissipation grooves 10 are formed in the side sides of the first heat dissipation blocks 7 and the second heat dissipation blocks 8 and are in communication with the first heat dissipation grooves 9. A plurality of first positioning grooves 13 matched with the first heat dissipation blocks 7 are formed in a circumferential array on the circumferential side of the magnetized blocks 2, and a plurality of second positioning grooves 14 matched with the second heat dissipation blocks 8 are formed in a circumferential array on the inner wall of the magnetized blocks 2. A plurality of mounting grooves 15 are formed between the first positioning grooves 13 and the second positioning grooves 14, and the permanent magnet columns 4 are mounted in the mounting grooves 15. A plurality of threaded grooves 11 are formed in one side of the mounting plate 5, a plurality of through grooves 12 are formed in one side of the magnetized blocks 2, and the mounting bolts 3 pass through the through grooves 12 and are threadedly matched in the threaded grooves 11.
[0036] The implementation process is that the first heat dissipation block 7 and the second heat dissipation block 8 are arranged on the inner wall of the rotor core 1 and the circumferential side of the mounting ring 6, the first heat dissipation block 7 and the second heat dissipation block 8 are located in the first positioning groove 13 and the second positioning groove 14, and the mounting groove 15, on which the permanent magnet column 4 is mounted, is arranged between the first positioning groove 13 and the second positioning groove 14, so that the permanent magnet column 4 in the magnetization block 2 can be cooled through the second heat dissipation groove 10 and the first heat dissipation groove 9 on the two sides of the first heat dissipation block 7 and the second heat dissipation block 8, thereby reducing the situation that the temperature of the permanent magnet column 4 in the magnetization block 2 continues to rise, and the magnetization block 2 can be fixedly mounted in the interior of the rotor core 1 by screwing the mounting bolt 3 through the through groove 12 and being screwed in the threaded groove 11 of the mounting plate 5.
[0037] The implementation benefit is that the high temperature generated by the permanent magnet column 4 in the magnetization block 2 can be cooled in time.
[0038] Embodiment 2
[0039] The permanent magnet column 4 comprises a magnetic core body 16 located in the middle, the circumferential side of the magnetic core body 16 is provided with a heat absorption layer 17, a plurality of heat dissipation holes 18 are arranged in the middle of the heat absorption layer 17, the circumferential side of the heat absorption layer 17 is provided with an epoxy plating layer 19, the circumferential side of the epoxy plating layer 19 is provided with a heat insulation layer 20, the circumferential side of the heat insulation layer 20 is provided with an alloy plating layer 21, and the circumferential side of the alloy plating layer 21 is provided with an anti-scratch layer 22.
[0040] The implementation process is that when the permanent magnet is in a high temperature state, the heat absorption layer 17 is used to absorb heat, and then the heat dissipation holes 18 are used to dissipate heat in time, the epoxy plating layer 19 and the heat insulation layer 20 are arranged to improve the high temperature resistance of the permanent magnet itself, the alloy plating layer 21 and the anti-scratch layer 22 are arranged to improve the scratch resistance of the permanent magnet, and the permanent magnet is prevented from being scratched.
[0041] The above embodiments are only used to illustrate the technical scheme described in the utility model and not limit the utility model, although the utility model has been described in detail with reference to the above embodiments, the utility model is not limited to the above specific implementation, therefore any modification or equivalent replacement of the utility model, and all technical schemes and improvements without departing from the spirit and scope of the utility model are covered in the claim range of the utility model.
Claims
1. A permanent magnet with good high-temperature resistance, characterized in that, include: The rotor core (1) has magnetized blocks (2) installed on both sides inside the rotor core (1). Mounting bolts (3) are provided on the outer side of the magnetized blocks (2). Multiple permanent magnet columns (4) are installed inside the magnetized blocks (2). A mounting plate (5) is installed in the middle of the rotor core (1). Mounting rings (6) are installed on both sides of the mounting plate (5). Heat dissipation components are provided on the inner wall of the rotor core (1) and the periphery of the mounting rings (6).
2. The permanent magnet with good high-temperature resistance according to claim 1, characterized in that, The heat dissipation assembly includes a plurality of first heat dissipation blocks (7) arranged in a circumferential array on the inner wall of the rotor core (1), and a plurality of second heat dissipation blocks (8) arranged in a circumferential array on the circumferential side of the mounting ring (6).
3. A permanent magnet with good high-temperature resistance according to claim 2, characterized in that, The first heat sink (7) and the second heat sink (8) are provided with a first heat sink groove (9) on their outer sides, and a plurality of second heat sink grooves (10) connected to the first heat sink groove (9) are provided on the sides of the first heat sink (7) and the second heat sink (8).
4. A permanent magnet with good high-temperature resistance according to claim 3, characterized in that, The magnetized block (2) has a plurality of first positioning grooves (13) arranged in a circumferential array on its periphery, which cooperate with the first heat sink (7). The magnetized block (2) has a plurality of second positioning grooves (14) arranged in a circumferential array on its inner wall, which cooperate with the second heat sink (8).
5. A permanent magnet with good high-temperature resistance according to claim 4, characterized in that, Multiple mounting slots (15) are provided between the first positioning slot (13) and the second positioning slot (14), and the permanent magnet column (4) is installed in the mounting slot (15).
6. A permanent magnet with good high-temperature resistance according to claim 1, characterized in that, The mounting plate (5) has multiple threaded grooves (11) on one side, and the magnetizing block (2) has multiple through grooves (12) on one side. The mounting bolt (3) passes through the through groove (12) and is threaded into the threaded groove (11).
7. A permanent magnet with good high-temperature resistance according to claim 1, characterized in that, The permanent magnet column (4) includes a magnetic core (16) located in the middle, and a heat-absorbing layer (17) is installed on the periphery of the magnetic core (16). A plurality of heat dissipation holes (18) are opened in the middle of the heat-absorbing layer (17).
8. A permanent magnet with good high-temperature resistance according to claim 7, characterized in that, The heat-absorbing layer (17) is provided with an epoxy coating (19) on its periphery, the epoxy coating (19) is provided with a heat insulation layer (20) on its periphery, the heat insulation layer (20) is provided with an alloy coating (21) on its periphery, and the alloy coating (21) is provided with a scratch-resistant layer (22) on its periphery.