Magnet arrangement structure capable of reducing use amount of magnets and improving field intensity
By optimizing the magnet structure of the Haierbeck array and adopting specific arrangements and magnet conduction designs, the problems of large magnet usage and weak magnetic field strength are solved, and the magnet usage and magnetic field strength are reduced, which reduces the consumption and cost of rare earth resources.
Patent Information
- Application Number
- CN202421907153.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-06
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-08-06
AI Technical Summary
The existing Haierbeck array magnet structure consumes a large amount of magnets, weak magnetic field strength, and low utilization rate of rare earth resources, resulting in high costs.
Six first single magnets are arranged in a straight line along the length direction into two rows, with specific settings for the magnetic charging direction, and vertical conductor magnets and inclined second single magnets are added on both sides, combining the position adjustment of the non-conductor magnets to optimize the magnetic field distribution.
The magnet usage was reduced by 16.6%, the magnetic field strength was increased by 6.3%, reducing the loss of rare earth materials and improving economic benefits.
Smart Images
Figure CN223140489U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of Halbach array magnet assembly, and particularly relates to a magnet arrangement structure that reduces the amount of magnets used and increases the field strength. Background Art
[0002] The Halbach Array is a magnet structure, which is an approximately ideal structure in engineering. Permanent magnets with different magnetization directions are arranged in a certain order, so that the magnetic field on the working surface is significantly enhanced, while the magnetic field on the non-working surface is significantly weakened. The goal is to generate the strongest magnetic field with the least amount of magnets, while reducing the influence of the stray magnetic field on the non-working surface on other components.
[0003] Figure 1 As a two-dimensional model of the existing conventional magnet arrangement structure, six permanent magnet single magnets 1 with the same length and width dimensions are arranged in a straight line in two rows up and down. A non-magnetic conductor 5 is arranged between the two rows of single magnets, and the width of the non-magnetic conductor is half of that of the single magnet. The magnetization directions of the six single magnets are Figure 1 the directions of the arrows in, and the magnetization directions of the corresponding single magnets in the two rows up and down are the same. From left to right, they are vertically upward, vertically downward, and vertically upward in sequence. This magnet arrangement structure consumes a large amount of magnets and has a weak magnetic field strength.
[0004] Moreover, the utilization rate of rare earth resources has attracted much attention nowadays, especially medium and heavy rare earths, such as neodymium element. Due to the relatively small crustal content, the cost of using neodymium-containing magnets has increased sharply. How to further reduce the usage of rare earths has become a technical problem that needs to be solved urgently by those skilled in the art. Therefore, it is necessary to propose a more ideal Halbach array structure to improve the utilization rate of the magnetic field, reduce the loss of rare earth materials, and improve economic benefits. Summary of the Utility Model
[0005] The purpose of the utility model is to provide a magnet arrangement structure that reduces the amount of magnets used and increases the field strength, so as to increase the magnetic field strength while reducing the amount of magnets used.
[0006] To achieve the above purpose, the solution of the utility model is: a magnet arrangement structure that reduces the amount of magnets used and increases the field strength, including at least one array. Each array includes six first single magnets arranged in a row, four second single magnets arranged obliquely, four magnetic conductors, and a non-magnetic conductor;
[0007] The six first single magnets are arranged in a straight line in two rows up and down along the length direction. The magnetization directions of the first single magnets in the upper row are vertically downward, horizontally leftward, and vertically upward in sequence from left to right, and the magnetization directions of the first single magnets in the lower row are vertically downward, horizontally rightward, and vertically upward in sequence from left to right;
[0008] Vertical magnetic conductors are symmetrically arranged on the left and right sides of the first single magnet in each row, and the non-magnetic conductor is arranged between two rows of the first single magnets and the magnetic conductors.
[0009] Four second single magnets are respectively arranged obliquely and symmetrically on the upper and lower sides of two rows of single magnets. The inner ends of the second single magnets abut against the first single magnets arranged on the left and right sides, the middle parts of the second single magnets abut against the tops of the magnetic conductors, and the magnetization directions of the upper and lower rows of second single magnets are both inclined downward and inclined upward from left to right.
[0010] Furthermore, an angle of 45° is formed between the second single magnet and the magnetic conductor, and inclined surfaces cooperating with the middle parts of the second single magnets are provided at the inner ends of the tops of the upper row of magnetic conductors and the inner ends of the bottoms of the lower row of magnetic conductors.
[0011] Furthermore, the width of the first single magnet is half of its length. The length and width dimensions of the second single magnet and the magnetic conductor are the same as those of the first single magnet. The width of the non-magnetic conductor is the same as the width of the first single magnet, and the length of the non-magnetic conductor is the sum of the lengths of three first single magnets and the widths of two magnetic conductors.
[0012] Furthermore, the length of the first single magnet is 4 mm and the width is 2 mm, and the length of the non-magnetic conductor is 16 mm and the width is 2 mm.
[0013] Furthermore, the top of the upper row of magnetic conductors is higher than the first single magnet, and the bottom of the lower row of magnetic conductors is lower than the first single magnet.
[0014] Furthermore, both the first single magnet and the second single magnet are neodymium iron boron magnets.
[0015] Furthermore, the magnetic conductor is made of a magnetic conductive material, including ferrite, ferritin, nickel iron alloy or barium ferrite.
[0016] Furthermore, the non-magnetic conductor is made of a non-magnetic conductive material, including aluminum, copper, nickel aluminum alloy.
[0017] After adopting the above scheme, the beneficial effects of the utility model are as follows:
[0018] The present utility model provides a magnet arrangement structure that can reduce the amount of magnets used and increase the field strength. It includes a first single magnet arranged in two rows, the first single magnets are linearly arranged along their length direction. The magnetization directions of the first single magnets in the upper row are vertically downward, horizontally leftward, and vertically upward from left to right in sequence. The magnetization directions of the first single magnets in the lower row are vertically downward, horizontally rightward, and vertically upward from left to right in sequence. Vertical magnetic conductors are symmetrically arranged on the left and right sides of each row of single magnets. A non-magnetic conductor is located between the two rows of first single magnets and the magnetic conductors. Four second single magnets are symmetrically arranged obliquely on the upper and lower sides of the two rows of single magnets, and the inner ends of the second single magnets abut against the first single magnets arranged on the left and right sides, and the middle parts of the second single magnets abut against the tops of the magnetic conductors. Then the outer ends of the second single magnets are obliquely outward and do not contact other structures. The magnetization directions of the second single magnets in the upper and lower rows are obliquely downward and obliquely upward from left to right.
[0019] The lengths of the first single magnets and the second single magnets of the present utility model are the same as those of the existing single magnets, while the width can be only half of that of the existing single magnets, which is equivalent to using only the amount of five existing single magnets, thus reducing the amount of magnets used. Moreover, the maximum magnetic field strength of the existing magnet arrangement structure is only 1.1742×10 6 A / m, and the maximum magnetic field strength of the magnet arrangement structure of the present utility model can reach 1.2208×10 6 A / m. While reducing the amount of magnets used, the magnetic field strength is increased, thereby improving the utilization rate of the magnetic field, reducing the loss of rare earth materials, and improving economic benefits. Description of the Drawings
[0020] Figure 1 is a two-dimensional model of the existing magnet arrangement structure;
[0021] Figure 2 is a two-dimensional model of the magnet arrangement structure of the present utility model;
[0022] Figure 3 is Figure 1 the 2D simulated field strength of the model;
[0023] Figure 4 is Figure 2 the 2D simulated field strength of the model.
[0024] Reference Numeral Description:
[0025] 1. Single magnet; 2. First single magnet; 3. Second single magnet; 4. Magnetic conductor; 5. Non-magnetic conductor. Detailed Embodiment
[0026] The following will make a detailed description of the present utility model in conjunction with the accompanying drawings and specific embodiments.
[0027] As Figure 1As shown, there is a conventional two-dimensional model of a magnet arrangement structure, in which six permanent magnet single magnets 1 with the same length and width dimensions are arranged in a straight line in two rows. Between the two rows of single magnets 1 is a non-magnetic body 5, and the width of the non-magnetic body 5 is half of that of the single magnet 1. The magnetization directions of the six single magnets 1 are Figure 1 the arrow directions in. The magnetization directions of the corresponding single magnets 1 in the upper and lower rows are the same, and from left to right are vertically upward, vertically downward, and vertically upward in sequence. Specifically, the length L0 of the single magnet 1 is 4 mm, the width Q0 is 4 mm, the length L1 of the non-magnetic body 5 is 16 mm, the width Q1 is 2 mm, and the length L2 from the non-magnetic body 5 to the top edge of the single magnet 1 is 2 mm. This kind of magnet arrangement structure requires six neodymium iron boron magnets with both length and width of 4 mm, and the magnet consumption is large and the cost is high. And as Figure 3 shown, the maximum magnetic field strength of this magnet arrangement structure is 1.1742×10 6 A / m, and the magnetic field strength is also weak.
[0028] As Figure 2 shown, the present invention provides an optimized magnet arrangement structure, including at least one array. Each array includes six arranged first single magnets 2, four obliquely arranged second single magnets 3, four magnetic conductors 4, and a non-magnetic body 5; the upper width dimensions of the first single magnets 2 are different, the length is greater than the width, and the width can specifically be half of the length. The six first single magnets 2 are arranged in a straight line in two rows along the length direction, and the length direction is along the length direction of the first magnetic conductor 4; the magnetization directions of the first single magnets 2 and the second single magnets 3 are Figure 2 the arrow directions in. The magnetization directions of the upper row of first single magnets 2 from left to right are vertically downward, horizontally leftward, and vertically upward in sequence, and the magnetization directions of the lower row of first single magnets 2 from left to right are vertically downward, horizontally rightward, and vertically upward in sequence; vertical magnetic conductors 4 are symmetrically arranged on the left and right sides of each row of first single magnets 2, and the non-magnetic body 5 is arranged between the two rows of first single magnets 2 and the magnetic conductors 4; the length and width dimensions of the second single magnets 3 are the same as those of the first single magnets 2. The four second single magnets 3 are respectively obliquely and symmetrically arranged on the upper and lower sides of the two rows of single magnets 1, and the inner ends of the second single magnets 3 abut against the first single magnets 2 arranged on the left and right sides. The middle parts of the second single magnets 3 abut against the tops of the magnetic conductors 4, and the outer ends of the second single magnets 3 are obliquely outward and do not contact other structures. The magnetization directions of the upper and lower rows of second single magnets 3 from left to right are both obliquely downward and obliquely upward, so the magnetization directions of the four second single magnets 3 are symmetrically arranged along the diagonal.
[0029] As Figure 4As shown, the magnetization directions of the first single magnets 2 in the upper row from left to right are vertically downward, horizontally leftward, and vertically upward in sequence, and the magnetization directions of the first single magnets 2 in the lower row from left to right are vertically downward, horizontally rightward, and vertically upward in sequence. Compared with the existing magnet arrangement, in the present utility model, the magnetization direction of the middle first single magnet 2 is changed from vertically downward to horizontally leftward and horizontally rightward, which can improve the magnetic field distribution, fully superimpose the magnetic field lines of the six first single magnets 2, and make the magnetic field concentrate on the two opposite ends of the middle two first single magnets 2, thereby increasing the magnetic field strength.
[0030] The width of the non-magnetic conductor 5 is the same as that of the first magnetic conductor 4, and the length is the sum of the lengths of three first magnetic conductors 4 and the widths of two magnetic conductors 4. The non-magnetic conductor 5 can help achieve the decoupling of the magnetic field in the length direction and the width direction, make the magnetic field distribution more uniform, reduce the mutual interference between magnetic fields, and thus improve the overall performance.
[0031] The length and width dimensions of the magnetic conductor 4 are the same as those of the first single magnet 2, and the magnetic conductor 4 is perpendicularly arranged with respect to the first single magnet 2, that is, the top of the upper row of magnetic conductors 4 is higher than the first single magnet 3, and the bottom of the lower row of magnetic conductors 4 is lower than the first single magnet 2, so that the subsequent second single magnet 3 can be inclined and abutted against the first single magnet 1 and the magnetic conductor 4. The inner ends of the tops of the upper row of magnetic conductors 4 and the inner ends of the bottoms of the lower row of magnetic conductors 4 are both provided with inclined surfaces that cooperate with the middle parts of the second single magnets 3. The included angle between the magnetic conductor 4 and the second single magnet 3 is preferably 45°. Thus, the left magnetic conductor 4 is located between the two second single magnets 3 on the left and the two first single magnets 2 on the left, and the same applies to the right side. The magnetic conductor 4 can effectively guide the magnetic field lines of the first single magnets 2 and the second single magnets 3 on the left or right side, make them gather along the path of the magnetic conductor 4, make the magnetic field distribution more concentrated and efficient, and significantly enhance the magnetic field strength.
[0032] In the present utility model, the length L4 of the first single magnet 2 is 4 mm, the width Q2 is 2 mm, the length L3 of the non-magnetic conductor 5 is 16 mm, the width Q3 is 2 mm, the length Q4 between the bottom end of the inclined surface at the top of the magnetic conductor 4 and the first magnetic conductor 4 is 1.2 mm, and the length L5 between the top end of the inclined surface and the top edge of the magnetic conductor 4 is 1.2 mm. Then the length L6 of the inclined surface where the second single magnet 3 abuts against the magnetic conductor 4 is 0.8 mm, approximately 1.3 mm. As Figure 4 shown, the maximum magnetic field strength of the magnet arrangement structure of the present utility model can reach 1.2208×10 6A / m, compared with the existing magnet arrangement structure, the magnetic field strength is effectively improved. Moreover, the length and width dimensions of the second single magnet 3 are the same as those of the first single magnet 2. Therefore, although the present utility model uses ten single magnets, the width of the single magnets used is only half of that of the existing single magnets, which is equivalent to only using five existing single magnets, reducing the magnetic steel consumption by 16.6% compared with the existing magnet arrangement, and the cost is lower.
[0033] The first single magnet 2 and the second single magnet 3 described in the present utility model are both single magnets made of NdFeB permanent magnetic material, that is, neodymium iron boron magnet, a permanent magnet with a Nd2Fe14B tetragonal crystal structure composed of an alloy of neodymium, iron and boron, and its main components are the rare earth element neodymium (Nd), iron (Fe) and boron (B).
[0034] The magnetic conductor 4 described in the present utility model is made of a magnetic conductive material, and can be selected but not limited to ferrite, ferritic, nickel iron alloy or barium ferrite.
[0035] The non-magnetic conductor described in the present utility model is made of a non-magnetic conductive material, and can be selected but not limited to aluminum, copper or nickel aluminum alloy.
[0036] The above is only the preferred embodiment of the present utility model, and does not limit the design of this case. All equivalent changes made according to the key design of this case fall within the protection scope of this case.
Claims
1. A magnet arrangement structure for reducing the amount of magnets used and increasing the field strength, characterized in that: Comprising at least one array, each array including six first single magnets arranged in a row, four second single magnets arranged obliquely, four magnetic conductors and one non-magnetic conductor; The six first single magnets are arranged in a straight line along the length direction into upper and lower rows. The magnetization directions of the upper row of first single magnets from left to right are vertically downward, horizontally leftward and vertically upward in sequence. The magnetization directions of the lower row of first single magnets from left to right are vertically downward, horizontally rightward and vertically upward in sequence; Vertical magnetic conductors are symmetrically arranged on the left and right sides of each row of first single magnets. The non-magnetic conductor is arranged between the two rows of first single magnets and the magnetic conductors; The four second single magnets are respectively arranged obliquely and symmetrically on the upper and lower sides of the two rows of single magnets. The inner ends of the second single magnets abut against the first single magnets arranged on the left and right sides, the middle parts of the second single magnets abut against the tops of the magnetic conductors. The magnetization directions of the upper and lower rows of second single magnets from left to right are both obliquely downward and obliquely upward; 2. The magnet arrangement structure for reducing the amount of magnets used and increasing the field strength as described in claim 1, characterized in that: There is a 45° angle between the second single magnet and the magnetic conductor. The inner ends of the tops of the upper row of magnetic conductors and the inner ends of the bottoms of the lower row of magnetic conductors are both provided with inclined surfaces for cooperating with the middle parts of the second single magnets; 3. A magnet arrangement structure for reducing the amount of magnets used and increasing the field strength, as described in claim 1 or 2, characterized in that: The width of the first single magnet is half of its length. The length and width dimensions of the second single magnet and the magnetic conductor are the same as those of the first single magnet. The width of the non-magnetic conductor is the same as the width of the first single magnet. The length of the non-magnetic conductor is the sum of the lengths of three first single magnets and the widths of two magnetic conductors; 4. A magnet arrangement structure for reducing the amount of magnets and increasing the field strength as described in claim 3, characterized in that: The length of the first single magnet is 4 mm and the width is 2 mm. The length of the non-magnetic conductor is 16 mm and the width is 2 mm; 5. A magnet arrangement structure for reducing the amount of magnets used and increasing the field strength, as described in claim 1, characterized in that: The top of the upper row of magnetic conductors is higher than the first single magnet, and the bottom of the lower row of magnetic conductors is lower than the first single magnet; 6. The magnet arrangement structure for reducing the amount of magnets used and increasing the field strength as claimed in claim 1, wherein: Both the first single magnet and the second single magnet are neodymium iron boron magnets; 7. A magnet arrangement structure for reducing the amount of magnets and increasing the field strength as described in claim 1, characterized in that: The magnetic conductor is made of a magnetic conductive material, including ferrite, ferritin, nickel iron alloy or barium ferrite; 8. A magnet arrangement structure for reducing the amount of magnets used and increasing the field strength, as described in claim 1, characterized in that: The non-magnetic conductor is made of a non-magnetic conductive material, including aluminum, copper or nickel aluminum alloy.