A tool for arranging special-shaped iron cores of an electromagnetic unit

Abstract

The present invention discloses a tool for combining and arranging special-shaped iron cores of an electromagnetic unit, a support body, comprising a base surface that can be spliced ​​with the surface on an adjacent support body to form a plane, and an edge side surface located on the same side of the base surface and whose orthographic projection to the base surface falls into the base surface; winding ends that are perpendicular to the surface and protruding are formed on the base surface and the edge side surface; a chassis, comprising sequentially arranged mounting grooves, in which the support body is assembled; the mounting grooves include groove walls that are in contact with the end faces of each winding end on the support body; the special-shaped electromagnetic unit is connected / fixed to the corresponding groove wall through the end face of the wire end. The tool for combining and arranging special-shaped iron cores of the electromagnetic unit can enhance the magnetic field above the base surface after winding, and the enhancement effect is obvious, the increase is uniform, and the controllability is strong. Moreover, the cost can be controlled according to actual needs, and the preparation is flexible and controllable. In addition, the electromagnetic unit has a wide range of applications and high versatility.

Description

Technical Field

[0001] The invention relates to the field of electromagnetic technology, and in particular to a tool for arranging a special-shaped iron core combination of an electromagnetic unit. Background Art

[0002] An electromagnet is a device that generates a magnetic field when a coil is energized. Generally, a conductive winding that matches its power is wound around the outside of the iron core. This coil with current flowing through it exhibits magnetism like a magnet. The iron core is usually made into a bar or hoof shape to make it easier to magnetize. And in order to make the magnetism of the electromagnet disappear after the power is turned off, the iron core is usually made of soft magnetic materials that demagnetize quickly. Therefore, the electromagnet exhibits magnetism when the power is turned on, and the magnetism disappears after the power is turned off. Electromagnets are extremely widely used in daily life, and their invention has also greatly improved the power of generators. Summary of the invention

[0003] A technical solution provided by the present invention is a special-shaped iron core combination arrangement tooling of an electromagnetic unit, which has the advantage that winding the wire on a support body can enhance the magnetic field strength above the base surface, and at the same time can replace permanent magnets and reduce the amount of rare earth materials to achieve the effect of reducing costs.

[0004] The technical solution of the present invention is: a special-shaped iron core combination arrangement tooling of an electromagnetic unit, having multiple surfaces, wherein each coil generates a magnetic field perpendicular to the surface on each surface, and these magnetic fields are superimposed and converged on each other, so that the magnetic flux lines converge on the base surface of the core material, so as to achieve the effect of enhancing the end face magnetic field strength.

[0005] Specifically, it includes: a support body, the support body is a polyhedron, and the support bodies can be spliced ​​with each other to finally realize a spliced ​​face. Therefore, the support body mainly presents a base surface, and the support bodies are spliced ​​in the same direction.

[0006] The other side surfaces on the support are the edge side surfaces. The characteristic of the edge side surfaces is that when the edge side surfaces are projected onto the base surface, the projection of the edge side surfaces needs to fall within the range of the base surface. Specifically, the edge side surfaces are inclined to form a peak, that is, the edge side surfaces or the extension of the edge side surfaces have a common intersection point, then the projection of the edge side surfaces onto the base surface is a projection area (such as a tetrahedron or a pentagonal pyramid). Specifically, the inclination angle between the base surface and the edge side surfaces is 40° to 65°.

[0007] Winding ends protruding perpendicular to the surface are formed on both the base surface and the edge side surface. When a conductor is wound on the winding end, the conductor is spirally coiled and energized to form a magnetic field perpendicular to the base surface / edge side surface.

[0008] Therefore, based on the shape of the support body, a basic N / S magnetic field can be formed on the base surface, and at the same time, various magnetic fields can also be formed on the side surfaces.

[0009] According to the right-hand screw rule, when the current directions of the coils on the base surface and the edge side surface correspond to each other, the magnetic field generated by the edge side surface coil will have a certain enhancement effect on the magnetic field of the base surface coil. That is, the magnetic field formed by the energized coil on the edge side surface has its magnetic flux lines converge toward the inside of the support body and pass through the base surface, and the direction is the same as the magnetic field generated by the base surface coil, so as to achieve the effect of enhancing the magnetic field strength of the base surface.

[0010] The support body can be made of non-magnetic structural parts, or highly magnetic soft magnetic materials, or hard magnetic materials with magnetization in a certain direction. The use of non-magnetic structural parts will not generate heat due to magnetic field saturation, but the enhancement of the magnetic field is limited; the use of magnetic soft magnetic structures can excite the concentrated magnetic field, making the magnetic field enhancement amplitude stronger, but it will also cause more serious heating due to the saturation problem of soft magnetic materials; the use of hard magnetic materials with magnetization in a specific direction can make the increased magnetic field obtain more superposition components, making the magnetic field of the enhanced surface stronger, but it will also cause the magnetic field of the hard magnetic material to demagnetize due to the magnetic field generated by the current passing through the coils on other surfaces.

[0011] The core structure made of soft magnetic material has the strongest magnetic field enhancement effect. Specifically, the core of soft magnetic material can be an integrally formed ferromagnetic material, such as magnetic material made of powder metallurgy (complex structure of the core can be directly realized by 3D printing, etc.), or a large piece of amorphous material integrally formed by copper mold suction casting, etc.; it can also be a magnetic material such as ordinary carbon steel and Permalloy.

[0012] The chassis includes a frame and a partition plate. The frame is a quadrilateral frame. The partition plate is arranged in an orthogonal direction to divide the interior of the frame into a plurality of installation slots. The installation slots arranged in sequence form an array arrangement, and a support body is assembled in the installation slot. The installation slot includes a slot wall that contacts the end faces of each winding end on the special-shaped electromagnetic unit. If the support body is a quadrangular pyramid, the installation slot is also a quadrangular pyramid chamber, and the end faces of each support body correspond to the relative slot wall. The quadrangular pyramid installation slot can have a hole near the top corner to pull the electromagnetic wire in the electromagnetic unit to the lower part of the chassis for overall wiring control. At the same time, a hollow structure can be arranged in the structural space formed by the frame and the partition plate, and a cooling water channel can be buried. The coolant is passed under the condition of ensuring air tightness, so as to cool the iron core directly in contact with the installation slot. The coolant can be simple water cooling or oil cooling. Or in the arranged hollow structure pipeline, the air cooling heat dissipation area is increased by increasing the surface area by adding folds, adding heat sinks, etc. At the same time, the arrangement of the hollow structure is also conducive to reducing the overall mass of the chassis.

[0013] The special-shaped electromagnetic unit is connected / fixed by contacting the end face of the winding end with the corresponding slot wall. Specifically, it can be fixed by the cooperation of the screw hole on the end face and the screw, or it can be connected by gluing the end face and the slot wall.

[0014] The advantages of the present invention are:

[0015] 1. After winding, the magnetic field on one side can be enhanced, and the enhancement effect is obvious, the increase is uniform, and the controllability is strong.

[0016] 2. The production process is simple, the cost can be controlled according to actual needs, and the preparation is flexible and controllable.

[0017] 3. It has a wide range of applications and can be used in various fields. The product has high versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 It is a three-dimensional diagram of a special-shaped iron core;

[0020] Figure 2 It is a three-dimensional diagram of a special-shaped iron core electromagnetic unit;

[0021] Figure 3 It is the magnetic field principle diagram of the special-shaped iron core electromagnetic unit;

[0022] Figure 4 A three-dimensional diagram of the chassis;

[0023] Figure 5 This is a structural diagram of the special-shaped iron core electromagnetic unit assembled in the chassis;

[0024] Among them, 1. support body; 2. frame; 3. partition plate. DETAILED DESCRIPTION

[0025] Example 1

[0026] The shape of a quadrangular pyramid is adopted, and coils are arranged on each face. The magnetic field generated by the coils is perpendicular to the plane. Since the magnetic field generated by the coils on each face will generate a large electromagnetic pulling force, a support body needs to be added to the core for support.

[0027] At the same time, since the wire winding on each surface needs to form a standard magnetic field and magnetic field strength. Therefore, the wire winding needs to be wound in a solenoid-like manner at a spiral angle as much as possible. As shown in the figure, a winding end that is perpendicular to the surface and protrudes is formed on each surface, and the wire is wound on the winding end, and the wire is wound in a spiral along the protruding direction of the winding end. Therefore, based on the support of the winding end, the wire is spirally coiled and energized to form a magnetic field perpendicular to the surface where the winding end is located.

[0028] The support body can be made of non-magnetic structural parts, or highly magnetic soft magnetic materials, or hard magnetic materials with magnetization in a certain direction. The use of non-magnetic structural parts will not generate heat due to magnetic field saturation, but the enhancement of the magnetic field is limited; the use of magnetic soft magnetic structures can excite the concentrated magnetic field, making the magnetic field enhancement amplitude stronger, but it will also cause more serious heating due to the saturation problem of soft magnetic materials; the use of hard magnetic materials with magnetization in a specific direction can make the increased magnetic field obtain more superposition components, making the magnetic field of the enhanced surface stronger, but it will also cause the magnetic field of the hard magnetic material to demagnetize due to the magnetic field generated by the current passing through the coils on other surfaces.

[0029] Except for the enhanced magnetic field on the base surface which is perpendicular to the plane and points outward, the magnetic fields generated by other edge surfaces all converge inward. Figure 3 As shown, the magnetic lines of force generated by the edge side will affect the magnetic field of the base surface.

[0030] Embodiment 2:

[0031] A quadrangular pyramid structure is adopted, the bottom surface is rectangular, the other four surfaces are triangular, and the preferred inclination angle of the triangular surface is in the range of 40° to 65°.

[0032] A winding end protruding perpendicular to the surface is formed on each surface of the quadrangular pyramid, and a conductor is wound on the winding end, and the conductor is spirally wound along the protruding direction of the winding end. Therefore, based on the support of the winding end, the conductor is spirally coiled and energized to form a magnetic field perpendicular to the surface where the winding end is located.

[0033] like Figure 1 and 3 As shown, the magnetic field of the triangular surface converges inward, and the rectangle at the bottom is the target surface for enhancing the magnetic field. The inclination angles of the four triangular surfaces can maximize the magnetic field convergence effect.

[0034] Specifically, it also involves the layout of the line direction, etc. In this embodiment, Figure 1 and 3 As shown, Figure 1 It is a three-dimensional diagram of the electromagnetic unit with a tetrahedral structure. Figure 2 The following is a schematic diagram of its open state. Figure 2 and 3, the main line is opened at the common intersection of the four edge sides, that is, at the vertex. The main line runs vertically and directly leads to the hole in the center of the base surface. The wires on the base surface are arranged in a counterclockwise spiral according to a square trajectory. The wires directly transition from the side to the left edge side. On the edge side, the wires are arranged in a clockwise spiral according to a triangular trajectory. The wires gradually wind around the center of the edge side. The center of the edge side is the hole of the routing channel. The wires pass through the routing channel to the right edge side opposite to the edge side. Pass through the routing channel hole in the center of the right edge side, and the wires are arranged in a clockwise spiral according to a triangular trajectory. Transition from the adjacent side to the upper edge side, the wires are arranged in a clockwise spiral according to a triangular trajectory on the upper edge side and gradually wind around the hole in the center of the edge side, and enter from the hole to the lower edge side opposite to the edge side. The wire passes through the hole in the center of the lower edge side, and the wires are arranged in a clockwise spiral according to a triangular trajectory. Finally, the wires are connected along the center line of the surface.

[0035] Based on the above wiring arrangement, a magnetic field with the N pole penetrating into the "paper" direction is formed on the base surface, and each edge side generates a magnetic field with the N pole facing the inside of the support body (such as Figure 2 As shown, the direction of the edge side opening is from the bottom to the plane).

[0036] The support body is preferably made of soft magnetic materials, such as Permalloy, SMC powder metallurgy, etc. The core material can be easily wired internally by drilling through holes, and the coils on each plane can be connected through the through holes in the middle, which is equivalent to connecting the coils on each plane in parallel, greatly reducing the heat generated by excessive series resistance.

[0037] Example 3

[0038] The Halbach array is an array structure of special-shaped electromagnetic units. It is arranged in a special magnetizing direction to achieve the effect of superimposing the magnetic flux lines of the permanent magnets on one side and canceling them on the other side. As a result, the array permanent magnets can enhance the magnetic field on one side while weakening the magnetic field on the other side. In other words, it is a special structure that can achieve the convergence of the magnetic field to increase the density of the magnetic flux lines on one side.

[0039] The special-shaped electromagnetic units need to be fixed in the array, so a chassis needs to be designed to place them.

[0040] The chassis includes a frame 2 and a partition plate 3. The frame 2 is a quadrilateral frame. The partition plate 3 is arranged in an orthogonal direction to divide the interior of the frame into a plurality of mounting grooves. The mounting grooves arranged in sequence form an array arrangement, and the support body 1 is assembled in the mounting groove. The mounting groove includes a groove wall that contacts the end face of each winding end on the special-shaped electromagnetic unit. If the support body 1 is a quadrangular pyramid, the mounting groove is also a quadrangular pyramid chamber, and each end face of the support body corresponds to the relative groove wall.

[0041] If the electromagnetic unit of this solution is used to carry out the Halbach array, not only can the magnetic field focusing effect of the Halbach array be realized, but also it is not dependent on rare earth resources, making the magnetic levitation track extremely feasible.

[0042] The embodiments of the present invention are only illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A tooling for arranging special-shaped iron cores of an electromagnetic unit, characterized in that: The support body comprises a base surface and edge side surfaces located on the same side of the base surface and whose orthographic projections to the base surface fall into the base surface; winding ends protruding perpendicular to the surface are formed on the base surface and the edge side surfaces; wherein the base surfaces on adjacent support bodies are spliced ​​to form a plane; The chassis comprises sequentially arranged mounting grooves in which the support body is assembled; the mounting grooves comprise groove walls that abut against the end faces of each winding end on the support body; and the special-shaped electromagnetic unit is connected or fixed to the corresponding groove wall through the end faces of the winding ends.

2. The tooling for arranging the special-shaped iron core of the electromagnetic unit according to claim 1, characterized in that: The chassis includes a frame and a partition plate; the partition plate is arranged in an orthogonal direction to divide the interior of the frame into a plurality of the installation grooves.

3. The tooling for arranging the special-shaped iron core of the electromagnetic unit according to claim 1, characterized in that: The installation groove includes a groove wall with a slope consistent with the end surface of the winding end.

4. The tooling for arranging the special-shaped iron core of the electromagnetic unit according to claim 1, characterized in that: The inclination angle between the base surface and the edge side surface is 40° to 65°.

5. The tooling for arranging the special-shaped iron core of the electromagnetic unit according to claim 1, characterized in that: The cross-sectional profile of the winding end is the same as the profile shape of the base surface or edge side surface where it is located.

6. The tooling for arranging the special-shaped iron cores of the electromagnetic unit according to claim 1, characterized in that: The support body can be selected from: non-magnetic structural parts, soft magnetic material parts with high magnetic conductivity, and hard magnetic material parts with a definite magnetizing direction.

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