Segmented New Multilayer Electromagnetic Coil

Abstract

This invention provides a segmented multi-layer electromagnetic coil, including a central shaft tube and a coil frame. The central shaft tube passes through two metal heat-conducting cylinders. Two coil frames are provided, each with an internal cavity. Multiple axial heat dissipation fins are longitudinally fixed to the inner walls of both cavities. This design solves the problems of insufficient magnetic circuit efficiency and magnetic field uniformity, and difficulty in ensuring assembly processability and consistency, that may exist in existing segmented multi-layer electromagnetic valve coils. This invention can guide and concentrate magnetic lines of force, making the magnetic field generated by each segmented coil more uniform and concentrated, forming a series effect of approximately multiple independent magnetic circuits, improving the overall magnetic circuit efficiency and electromagnetic force output. Moreover, as a structural component, it physically isolates each segmented coil and mounts it on the frame, enhancing the mechanical strength of the overall structure. Furthermore, the magnetic snap-fit ​​installation is quick and convenient.

Description

Technical Field

[0001] This utility model is a segmented new multilayer electromagnetic coil, belonging to the field of electromagnetic coil technology. Background Technology

[0002] The solenoid valve coil is the core driving component of a solenoid valve. It generates a magnetic field by being energized, which drives the valve core to move, thereby controlling the flow or direction of fluid. To meet different power, size, and heat dissipation requirements, segmented multi-layer coil structures have emerged.

[0003] In existing technologies, such as the segmented multilayer solenoid valve coil disclosed in Chinese Patent CN211699874U, a single long coil is divided into multiple short coils connected in series and wound in layers. This solves to some extent the problems of difficult winding of traditional long coils and serious internal heat accumulation. However, in practice, this segmented multilayer solenoid valve coil usually winds multiple segmented coils on the same smooth coil frame. The magnetic field generated by each coil segment is not evenly distributed in the axial direction, and there may be mutual interference of magnetic lines of force. This results in the overall magnetic circuit efficiency not reaching the optimal level, affecting the response speed and output force of the solenoid valve. Moreover, multiple coil segments need to be precisely aligned and fixed on the same frame, which requires extremely high assembly technology, making it difficult to achieve automated and efficient production. Furthermore, the consistency of product performance is easily affected by human operation errors. There is an urgent need for a segmented multilayer solenoid coil to solve the above-mentioned problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a segmented new multilayer electromagnetic coil to solve the problems mentioned in the background technology. The utility model has a novel overall structure, high magnetic circuit efficiency, good heat dissipation performance, stable structure and easy segmented assembly.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a segmented novel multilayer electromagnetic coil, including a central shaft tube and a coil frame. The central shaft tube passes through two metal heat-conducting cylinders. Two coil frames are provided, each with an inner cavity. Multiple axial heat dissipation fins are longitudinally fixed to the inner walls of both inner cavities. A first magnetically conductive partition is fixed to the lower end of each inner cavity. Two sets of first arc-shaped cavities are respectively opened at the lower ends of the two first magnetically conductive partitions. A first magnetic arc-shaped sheet is glued to one side of the lower end of each set of first arc-shaped cavities with epoxy resin. A second magnetically conductive partition is fixed to the upper end of each inner cavity. Two sets of bent metal sheets are respectively fixed to the upper ends of the two second magnetically conductive partitions. An injection-molded shell is fitted between the two coil frames.

[0006] Furthermore, both of the coil skeletons have winding grooves on their side surfaces, and electromagnetic coils are wound in both winding grooves. The two injection-molded shells are fixed to the outer edges of the two first magnetic separators and the two second magnetic separators by a sealing layer.

[0007] Furthermore, both electromagnetic coils are located inside the injection-molded housing, and a mounting base is fixed to the lower outer end of the injection-molded housing.

[0008] Furthermore, the lower set of bent metal sheets are respectively inserted into the upper set of first arc-shaped cavities, and are respectively magnetically attracted and fixed to the first magnetic arc-shaped sheets at multiple upper positions by magnets.

[0009] Furthermore, both first magnetic separators and both second magnetic separators are made of low-carbon steel or iron-silicon alloy, with the second magnetic separator at the lower position attached to the first magnetic separator at the upper position.

[0010] Furthermore, the other end of each of the axial heat dissipation fins is fixed to two metal heat-conducting cylinders.

[0011] The beneficial effects of this utility model are as follows: The segmented multilayer electromagnetic coil of this utility model has a reasonable structure due to the addition of axial heat dissipation fins, metal heat-conducting cylinder, first magnetic conductive plate, first magnetic arc plate, second magnetic conductive plate, and bent metal plate. It can guide and concentrate magnetic lines of force, making the magnetic field generated by each segmented coil more uniform and concentrated, forming a series effect of approximately multiple independent magnetic circuits, which improves the overall magnetic circuit efficiency and electromagnetic force output. Moreover, as a structural component, it physically isolates each segmented coil and installs it on the frame, enhancing the mechanical strength of the overall structure. The magnetic snap-fit ​​installation is quick and convenient, and it is highly practical. Attached Figure Description

[0012] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0013] Figure 1 This is a schematic diagram of the segmented multilayer electromagnetic coil of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the segmented multilayer electromagnetic coil of this utility model;

[0015] Figure 3 This is a schematic diagram of the installation structure of a single electromagnetic coil of the segmented multilayer electromagnetic coil of this utility model.

[0016] Figure 4 This is a schematic diagram of the axial heat dissipation fin position structure of the segmented multilayer electromagnetic coil of this utility model.

[0017] Figure 5 This is a bottom view of the first magnetic separator of the segmented multilayer electromagnetic coil of this utility model.

[0018] In the figure: 1-coil frame, 2-winding groove, 3-electromagnetic coil, 4-frame inner cavity, 5-axial heat dissipation fins, 6-metal heat-conducting cylinder, 7-first magnetic conductive plate, 8-first arc-shaped cavity, 9-first magnetic arc-shaped sheet, 10-second magnetic conductive plate, 11-bent metal sheet, 12-central shaft tube, 13-sealing layer, 14-injection molded shell, 15-mounting base. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] Please see Figures 1-5 This utility model provides a technical solution: a segmented new multilayer electromagnetic coil, including a central shaft tube 12 and a coil frame 1. The central shaft tube 12 passes through two metal heat-conducting cylinders 6. There are two coil frames 1, and each of the two coil frames 1 has an inner cavity 4. The inner walls of the two inner cavities 4 are longitudinally fixed with multiple axial heat dissipation fins 5. The lower ends of the two inner cavities 4 are fixed with first magnetic conductive plates 7. The lower ends of the two first magnetic conductive plates 7 are respectively provided with two sets of first arc-shaped cavities 8. The lower side of the two sets of first arc-shaped cavities 8 is fixed with a first magnetic arc-shaped sheet 9 by epoxy resin adhesive. The upper ends of the two inner cavities 4 are fixed with second magnetic conductive plates 10. The upper ends of the two second magnetic conductive plates 10 are respectively fixed with two sets of bent metal sheets 11. An injection-molded shell 14 is sleeved between the two coil frames 1. This design solves the problems that may exist in the original segmented new multilayer electromagnetic valve coil, such as insufficient magnetic circuit efficiency and magnetic field uniformity, and difficulty in ensuring assembly processability and consistency.

[0021] As the first embodiment of this utility model: two coil frames 1 are provided with winding grooves 2 on their side surfaces, and electromagnetic coils 3 are wound in both winding grooves 2. Two injection molded shells 14 are fixed to the outer edges of two first magnetic guide plates 7 and two second magnetic guide plates 10 through a sealing layer 13. The two electromagnetic coils 3 are located inside the injection molded shells 14. A mounting base 15 is fixed to the lower outer end of the injection molded shells 14. The added sealing layer 13 facilitates the fixation of the two injection molded shells 14 to the two first magnetic guide plates 7 and the two second magnetic guide plates 10.

[0022] A set of bent metal sheets 11 on the lower side are respectively inserted into a set of first arc-shaped cavities 8 on the upper side, and are respectively magnetically attracted and fixed to multiple first magnetic arc-shaped sheets 9 on the upper side. By adding a set of bent metal sheets 11 on the lower side, they are respectively inserted into a set of first arc-shaped cavities 8 on the upper side, and are respectively magnetically attracted and fixed to multiple first magnetic arc-shaped sheets 9 on the upper side, which enables the second magnetically conductive partition 10 on the lower side to be fitted and attached to the first magnetically conductive partition 7 on the upper side. The two first magnetically conductive partitions 7 and the two second magnetically conductive partitions 10 are all made of low-carbon steel or iron-silicon alloy. The second magnetically conductive partition 10 on the lower side is attached to the first magnetically conductive partition 7 on the upper side. The other ends of multiple axial heat dissipation fins 5 are respectively fixed to two metal heat-conducting cylinders 6. The addition of multiple axial heat dissipation fins 5 can increase the contact area with air, and directly and efficiently dissipate the heat generated by the two electromagnetic coils 3 during operation to the surrounding environment, breaking the limitations of traditional axial heat conduction.

[0023] As a second embodiment of this utility model: First, the components are prepared and pre-assembled. Two electromagnetic coils 3 are wound into the winding slots 2 of two independent coil frames 1, forming two independent segmented coil modules. The upper and lower ends of each coil frame 1 are respectively fixed with a second magnetically conductive partition 10 and a first magnetically conductive partition 7. The pre-assembled single module structure can be seen from [reference needed]. Figure 3 Next, align and insert the bent metal piece 11 of the lower segmented coil module into the first arc-shaped cavity 8 of the upper segmented coil module. Then, twist the lower segmented coil module horizontally. Since the first magnetic arc-shaped piece 9 is already bonded to the first arc-shaped cavity 8 with epoxy resin, the bent metal piece 11 will be magnetically attracted and fixed after being inserted. Figure 2 As shown, this achieves a fast, precise, and secure connection between the two modules. Then, the two connected segmented coil modules are placed into an injection mold, and an injection-molded shell 14 is formed on its exterior through the injection molding process. The injection molding material is tightly bonded to the outer edges of the two first magnetic separators 7 and the two second magnetic separators 10 through the sealing adhesive layer 13. Figure 1 As shown, the final sealing and fixing are completed, forming a robust, sealed, and moisture-proof coil assembly. Mounting base 15 is used to fix the entire coil assembly to the solenoid valve. Finally, the external iron core is inserted into the central shaft tube 12 for installation. When current flows through the pins (not shown) through the two series-connected electromagnetic coils 3, they jointly generate a driving magnetic field. During this process, the first magnetically conductive partition 7 and the second magnetically conductive partition 10 are made of magnetically conductive materials such as low-carbon steel or iron-silicon alloy, which can effectively guide and concentrate magnetic lines of force, making the magnetic field distribution more uniform and significantly improving magnetic circuit efficiency and electromagnetic force output. Simultaneously, the heat generated during operation is transferred from the electromagnetic coils 3 to the coil frame 1, and then radially dissipated through multiple longitudinally distributed axial heat dissipation fins 5 in the inner cavity 4 of the frame and the metal heat-conducting cylinder 6.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A new type of multi-layer electromagnetic coil in sections, comprising a central shaft tube (12) and a coil former (1), characterized in that: The central shaft tube (12) passes through two metal heat-conducting cylinders (6). There are two coil skeletons (1). Each of the two coil skeletons (1) has a skeleton cavity (4). The inner walls of the two skeleton cavities (4) are longitudinally fixed with multiple axial heat dissipation fins (5). The lower ends of the two skeleton cavities (4) are fixed with first magnetic conductive plates (7). The lower ends of the two first magnetic conductive plates (7) are respectively provided with two sets of first arc-shaped cavities (8). The lower side of the two sets of first arc-shaped cavities (8) is fixed with a first magnetic arc-shaped sheet (9) by epoxy resin adhesive. The upper ends of the two skeleton cavities (4) are fixed with second magnetic conductive plates (10). The upper ends of the two second magnetic conductive plates (10) are respectively fixed with two sets of bent metal sheets (11). The two coil skeletons (1) are fitted with an injection-molded shell (14).

2. The segmented novel multi-layer electromagnetic coil of claim 1, wherein: Both of the coil frames (1) have winding grooves (2) on their side surfaces, and both winding grooves (2) are wound with electromagnetic coils (3). The two injection-molded shells (14) are fixed to the outer edges of the two first magnetic separators (7) and the two second magnetic separators (10) through a sealant layer (13).

3. The segmented novel multi-layer electromagnetic coil of claim 2, wherein: Both of the electromagnetic coils (3) are located inside the injection-molded housing (14), and a mounting base (15) is fixed to the lower part of the injection-molded housing (14).

4. The segmented novel multi-layer electromagnetic coil of claim 1, wherein: The lower set of bent metal sheets (11) are respectively inserted into the upper set of first arc-shaped cavities (8), and are respectively magnetically attracted and fixed to the first magnetic arc-shaped sheets (9) at multiple upper positions by magnets.

5. The segmented novel multi-layer electromagnetic coil of claim 1, wherein: Both first magnetic separators (7) and two second magnetic separators (10) are made of low carbon steel or iron-silicon alloy. The second magnetic separator (10) at the lower position is attached to the first magnetic separator (7) at the upper position.

6. The segmented novel multi-layer electromagnetic coil of claim 1, wherein: The other end of each of the axial heat dissipation fins (5) is fixed to two metal heat-conducting cylinders (6).

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