CN219267406U - Arrangement structure for improving surface magnetic flux density of Halbach magnetic assembly - Google Patents
Arrangement structure for improving surface magnetic flux density of Halbach magnetic assembly Download PDFInfo
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- CN219267406U CN219267406U CN202223571854.4U CN202223571854U CN219267406U CN 219267406 U CN219267406 U CN 219267406U CN 202223571854 U CN202223571854 U CN 202223571854U CN 219267406 U CN219267406 U CN 219267406U
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Abstract
The utility model provides an arrangement structure for improving the surface magnetic flux density of a Halbach magnetic assembly, which relates to the technical field of Halbach magnet arrays, wherein the arrangement structure for improving the surface magnetic flux density of the Halbach magnetic assembly comprises a first magnet, a first magnet group, a second magnet and a second magnet group which are sequentially arranged along a straight line, the magnetizing direction of the first magnet is horizontal left, the first magnet group comprises a first left single magnet and a first right single magnet, the magnetizing directions of the first left single magnet and the first right single magnet are in axial symmetry, the magnetizing direction of the second magnet is horizontal right, the second magnet group comprises a second left Shan Citi and a second right single magnet, and the magnetizing directions of the second left Shan Citi and the second right single magnet are in axial symmetry; the utility model relates to a linear halbach magnet array, which can realize the remarkable improvement of the magnetic flux density on the surface of the magnet array on the premise of not changing the marks and not increasing the total volume of the magnet.
Description
Technical Field
The utility model relates to the technical field of linear Halbach array magnets, in particular to an arrangement structure for improving surface magnetic flux density of a Halbach magnetic assembly.
Background
Halbach array is a super strong magnet structure designed to be nearly ideal in order to produce the strongest magnetic field with the fewest magnets. In 1979, the American scientist Claus Harbah KlausHalbach produced this special permanent magnet structure and gradually perfected during experimental electron acceleration experiments, finally formed a halbach magnet array, which is widely used in the fields of 3C electronic products, smart furniture and the like.
The conventional linear halbach magnet array is formed by arranging four single magnets with the same length, width and height along a linear direction, as shown in fig. 3, wherein the magnetizing directions of the four single magnets are horizontal left, vertical downward, horizontal right and vertical upward in sequence. The prior linear Halbach (Halbach) magnet arrangement mode has limited magnetic flux density, if the surface magnetic flux density needs to be improved, the prior mode can generally change the brand of neodymium-iron-boron magnetic steel, thus increasing the cost of the magnetic assembly and being not beneficial to market popularization.
Disclosure of Invention
The utility model aims to provide an arrangement structure for improving the surface magnetic flux density of a Halbach magnetic assembly, so as to solve the technical problem that the surface magnetic flux density of the existing linear type Halbach magnet array is low in the prior art; the preferred technical scheme of the technical schemes provided by the utility model has a plurality of technical effects; details are set forth below.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides an arrangement structure for improving the surface magnetic flux density of a Halbach magnetic assembly, which comprises a first magnet, a first magnetic group, a second magnet and a second magnetic group which are sequentially arranged along a straight line, wherein: the magnetizing direction of the first magnet is horizontal to the left; the first magnetic group comprises a first left single magnet and a first right single magnet, wherein the magnetizing direction of the first left single magnet and the magnetizing direction of the first right single magnet are in axial symmetry; the magnetizing direction of the second magnet is horizontal to the right; the second magnetic group comprises a second left Shan Citi and a second right single magnet, wherein the magnetizing direction of the second left single magnet and the magnetizing direction of the second right single magnet are arranged in an upward inclined mode, and the magnetizing direction of the second left single magnet is axisymmetric.
Preferably, the length, width and height dimensions of the first magnet group, the length, width and height dimensions of the second magnet group are the same as the length, width and height dimensions of the second magnet group.
Preferably, the length, width and height dimensions of the first left single magnet are the same as those of the first right single magnet.
Preferably, the length, width and height dimensions of the second left single magnet are the same as the length, width and height dimensions of the second right single magnet.
Preferably, the magnetizing direction of the first left single magnet is obliquely arranged leftwards and downwards; and an included angle between the magnetizing direction of the first left single magnet and the vertical direction is an acute angle.
Preferably, the included angle between the magnetizing direction of the first left single magnet and the vertical direction is 20 degrees.
Preferably, the magnetizing direction of the second left single magnet is obliquely arranged right and upward; and an included angle between the magnetizing direction of the second left single magnet and the vertical direction is an acute angle.
Preferably, the included angle between the magnetizing direction of the second left single magnet and the vertical direction is 20 degrees.
Preferably, the first magnet, the first left single magnet, the first right single magnet, the second left single magnet and the second right single magnet are neodymium-iron-boron magnets.
Preferably, the first magnet, the first left single magnet, the first right single magnet, the second left single magnet and the second right single magnet have the same number.
The arrangement structure for improving the surface magnetic flux density of the Halbach magnetic assembly provided by the utility model has at least the following beneficial effects:
the arrangement structure of the Halbach magnetic assembly for improving the surface magnetic flux density comprises a first magnet, a first magnetic group, a second magnet and a second magnetic group which are sequentially arranged along a straight line, wherein the first magnet, the first magnetic group, the second magnet and the second magnetic group form a linear type Halbach magnet array.
The magnetizing direction of the first magnet is horizontal leftwards, the first magnetic group comprises a first left single magnet and a first right single magnet, the magnetizing direction of the first left single magnet and the magnetizing direction of the first right single magnet are axially symmetrical, the magnetizing direction of the second magnet is horizontal rightwards, the magnetizing direction of the second left single magnet is axially symmetrical with the magnetizing direction of the second right single magnet, the linear type halbach magnet array adopting the structure can obviously improve the surface magnetic flux density without changing the magnet marks and changing the volume of the whole magnetic assembly
The utility model can improve the magnetic flux density close to the surface of the magnetic assembly by about 600Gs on the premise of not changing the brand of the NdFeB magnetic steel and not changing the total volume of the linear Halbach magnetic assembly, and has remarkable magnetic flux density improving effect.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic illustration of the measurement of a specified distance to its surface in accordance with the present utility model;
fig. 3 is a schematic structural diagram of a conventional linear halbach magnet array;
FIG. 4 is a schematic diagram of a measurement of a specified distance from a surface of a conventional linear halbach array;
FIG. 5 is a line graph of flux density measurement data for a 3mm position from its magnet surface for the present utility model and prior art;
FIG. 6 is a plot of measured data for magnetic flux density for the present utility model and prior art at a distance of 1mm from its magnet surface.
Reference numerals
1. A first magnet; 2. a first magnetic group; 21. a first left single magnet; 22. a first right single magnet; 3. a second magnet; 4. a second magnetic group; 41. second left Shan Citi; 42. and a second right single magnet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, based on the examples herein, which are within the scope of the utility model as defined by the claims, will be within the scope of the utility model as defined by the claims.
Example 1:
the utility model provides an arrangement structure for improving the surface magnetic flux density of a Halbach magnetic assembly, which is shown in figure 1 and comprises a first magnet 1, a first magnetic group 2, a second magnet 3 and a second magnetic group 4 which are sequentially arranged along a straight line.
The magnetizing direction of the first magnet 1 is horizontal leftward, the first magnet group 2 comprises a first left single magnet 21 and a first right single magnet 22, the magnetizing directions of the first left single magnet 21 and the first right single magnet 22 are arranged in a downward inclined mode, the magnetizing directions of the second magnet 3 are horizontal rightward, the second magnet group 4 comprises a second left single magnet 41 and a second right single magnet 42, the magnetizing directions of the second left single magnet 41 and the second right single magnet 42 are arranged in an upward inclined mode, and the magnetizing directions of the second left single magnet 41 and the second right single magnet 42 are axisymmetric.
The first magnet 1, the first left single magnet 21, the first right single magnet 22, the second magnet 3, the second left single magnet 41, and the second right single magnet 42 form a linear halbach magnet array.
The utility model adopts the first magnetic group 2 with the first left single magnet 21 and the first right single magnet 22 and the second magnetic group 4 with the second left single magnet 41 and the second right single magnet 42 to replace the corresponding magnet of the prior linear type halbach magnet array, and can realize the remarkable improvement of the magnetic flux density on the surface of the magnet array on the premise of not changing the brand and not increasing the total volume of the magnet.
Example 2:
example 2 is based on example 1:
as shown in fig. 1, the length, width and height dimensions of the first magnet group 2, the length, width and height dimensions of the second magnet 3 are the same as those of the second magnet group 4, and the length, width and height dimensions are the same, so that the total volume of the arrangement structure of the Halbach magnet assembly for improving the surface magnetic flux density is not changed on the premise of improving the surface magnetic flux density.
As an alternative embodiment, the length, width and height dimensions of the first left single magnet 21 are the same as those of the first right single magnet 22, and the first left single magnet 21 and the first right single magnet 22 are the same in shape and are half of the size specification of the first magnet 1.
As an alternative embodiment, the length, width and height dimensions of the second left single magnet 41 are the same as those of the second right single magnet 42, and the second left single magnet 41 and the second right single magnet 42 are the same in shape and are half of the size specification of the first magnet 1.
As an alternative embodiment, as shown in fig. 1, the magnetizing direction of the first left single magnet 21 is obliquely arranged to the left and the lower, and the included angle θ between the magnetizing direction of the first left single magnet 21 and the vertical direction is an acute angle.
The magnetizing direction of the first left single magnet 21 forms an angle of 20 ° with the vertical direction.
The magnetizing direction of the first right single magnet 22 is axisymmetric to the magnetizing direction of the first left single magnet 21, and the included angle between the magnetizing direction and the vertical direction is also 20 °.
As an alternative embodiment, as shown in fig. 1, the magnetizing direction of the second left single magnet 41 is inclined upward and rightward, and the included angle θ between the magnetizing direction of the second left single magnet 41 and the vertical direction is an acute angle.
The magnetizing direction of the second left single magnet 41 forms an angle of 20 ° with the vertical direction.
The magnetizing direction of the second right single magnet 42 is axisymmetric to the magnetizing direction of the second left single magnet 41, and the included angle between the second right single magnet and the vertical direction is 20 °.
As an alternative embodiment, the first magnet 1, the first left single magnet 21, the first right single magnet 22, the second magnet 3, the second left single magnet 41 and the second right single magnet 42 are neodymium-iron-boron magnets.
The first magnet 1, the first left single magnet 21, the first right single magnet 22, the second magnet 3, the second left single magnet 41 and the second right single magnet 42 are identical in number.
Therefore, on the premise of improving the surface magnetic flux density, the arrangement structure of the Halbach magnetic assembly for improving the surface magnetic flux density can not change the magnet marks.
As shown in fig. 2, the magnetic flux density at the positions 3mm and 1mm from the surface of the arrangement structure of lifting surface magnetic flux density of the Halbach magnetic unit according to the present utility model was measured using a measuring device.
As shown in fig. 4, the magnetic flux density at positions 3mm and 1mm from the surface of the prior art was measured using a measuring apparatus.
Fig. 5 is a graph of measured data lines at a position 3mm from a surface, the ordinate of the graph is magnetic flux density, the unit is Gs, the positive and negative are not the size, but the direction, the abscissa of the graph is the horizontal distance along the surface of a magnet, the icon "original Halbach" in the graph is the prior art, and the "improved Halbach" is the utility model, no matter in the graph, the whole broken line is in sine distribution, and the magnetic flux density near the position of the trough of the utility model can be intuitively seen in the graph to be obviously improved by about 100 Gs.
Fig. 6 is a graph of measured data lines at a position 1mm from a surface, wherein the ordinate of the graph is magnetic flux density, the units are Gs, the positive and negative are not the size, but the direction, the abscissa of the graph is the horizontal distance along the surface of a magnet, the icon "original Halbach" in the graph is the prior art, the "improved Halbach" is the utility model, no matter the utility model is shown in the graph or the prior art, the whole broken line is in sine distribution, and the magnetic flux density near the trough position of the utility model can be visually seen in the graph to be obviously improved by about 300-600 Gs.
In summary, the utility model can significantly improve the magnetic flux density on the surface of the magnet.
In the description of the present application, it should be understood that the terms "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Furthermore, in the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.
In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (10)
1. An arrangement structure for improving surface magnetic flux density of a Halbach magnetic assembly is characterized by comprising a first magnet, a first magnetic group, a second magnet and a second magnetic group which are sequentially arranged along a straight line, wherein:
the magnetizing direction of the first magnet is horizontal to the left;
the first magnetic group comprises a first left single magnet and a first right single magnet, wherein the magnetizing direction of the first left single magnet and the magnetizing direction of the first right single magnet are in axial symmetry;
the magnetizing direction of the second magnet is horizontal to the right;
the second magnetic group comprises a second left Shan Citi and a second right single magnet, wherein the magnetizing direction of the second left single magnet and the magnetizing direction of the second right single magnet are arranged in an upward inclined mode, and the magnetizing direction of the second left single magnet is axisymmetric.
2. The Halbach magnetic assembly of claim 1, wherein the first magnet has a length, width, and height dimension, the first magnet set has a length, width, and height dimension, and the second magnet set has a length, width, and height dimension.
3. The Halbach magnet assembly of claim 2, wherein the first left single magnet has the same length, width and height dimensions as the first right single magnet.
4. The Halbach magnet assembly of claim 2, wherein the second left single magnet has the same length, width and height dimensions as the second right single magnet.
5. The arrangement for improving the surface magnetic flux density of a Halbach magnet assembly according to claim 1, wherein the magnetizing direction of the first left single magnet is obliquely set to the left and the lower;
and an included angle between the magnetizing direction of the first left single magnet and the vertical direction is an acute angle.
6. The Halbach magnet assembly of claim 5, wherein the first left single magnet has a magnetization direction at an angle of 20 ° to the vertical.
7. The arrangement for improving the surface magnetic flux density of a Halbach magnet assembly according to claim 1, wherein the magnetizing direction of the second left single magnet is obliquely set to the right upper side;
and an included angle between the magnetizing direction of the second left single magnet and the vertical direction is an acute angle.
8. The Halbach magnet assembly of claim 7, wherein the second left single magnet has a magnetization direction at an angle of 20 ° to the vertical.
9. The Halbach magnet assembly of claim 1, wherein the first magnet, the first left single magnet, the first right single magnet, the second left single magnet and the second right single magnet are neodymium-iron-boron magnets.
10. The Halbach magnet assembly of claim 1, wherein the first magnet, the first left single magnet, the first right single magnet, the second left single magnet and the second right single magnet are identical in number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223571854.4U CN219267406U (en) | 2022-12-27 | 2022-12-27 | Arrangement structure for improving surface magnetic flux density of Halbach magnetic assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223571854.4U CN219267406U (en) | 2022-12-27 | 2022-12-27 | Arrangement structure for improving surface magnetic flux density of Halbach magnetic assembly |
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| CN219267406U true CN219267406U (en) | 2023-06-27 |
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| CN202223571854.4U Active CN219267406U (en) | 2022-12-27 | 2022-12-27 | Arrangement structure for improving surface magnetic flux density of Halbach magnetic assembly |
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