Novel PFC inductor

Abstract

The utility model discloses a novel PFC (Power Factor Correction) inductor which comprises a base, an elliptical magnetic core and a coil wound on the elliptical magnetic core, the base is provided with a saddle-shaped groove, and the magnetic core is installed on the saddle-shaped groove. The utility model has the following technical effects: the X direction meets the requirement of the size of a user, and the user can easily and naturally replace and upgrade the PCB without changing the PCB; the direct-current resistance is lower, and the conversion efficiency is high; and the material and labor cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of inductors, and in particular to a novel PFC inductor. Background Art

[0002] With the need for energy conservation, high efficiency, and a clean power grid, PFC inductors are now used in the circuits of household appliances such as new energy, network communication, automatic control, and variable frequency air conditioners to improve the power factor and filter out clutter. The current PFC inductors are made of toroidal cores and rectangular cores, and the production of PFC inductors made of these two cores is difficult and costly.

[0003] Therefore, there are defects in the prior art and improvements are needed. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a novel PFC inductor that meets the needs of convenient use and easy upgrade.

[0005] The technical solution of the utility model is as follows: A novel PFC inductor is provided, including: a base, an oval core, and a coil wound around the oval core; the base is provided with a saddle-shaped groove, and the core is installed on the saddle-shaped groove.

[0006] Further, the inner side of the oval core is an oval hole, and the coil passes through the oval hole and is wound around the oval core.

[0007] Further, the edge of the oval core is chamfered.

[0008] Further, a lead hole is provided on the inner side of the saddle-shaped groove, and the lead of the coil passes through the lead hole.

[0009] Further, the base includes: a support frame, and mounting feet installed at the lower part of the support frame; the saddle-shaped groove is arranged on the upper surface of the support frame.

[0010] Further, the base further includes: a support frame connected to the lower part of the support frame.

[0011] Further, the coil is wound in a flat and three-dimensional manner.

[0012] In this solution, the inner and outer contours of the magnetic core are designed to be oval, with a square cross-section and chamfers of R2.5 on the four edges. The surface of the oval magnetic core is smooth and free of burrs, so that the enameled wire can be spirally wound around the magnetic core and penetrate at high speed, achieving high-speed winding, improving the utilization rate of the machine, reducing the winding man-hours and labor costs. Since the magnetic core is oval, the X-direction dimension after winding is smaller, which can meet the dimensional requirements of the user. In addition, the designer can adjust the size ratio of the major axis and minor axis of the oval according to the needs of the user to achieve the required finished product size. By using flat wire instead of round enameled wire for vertical winding, the heat dissipation area is increased, the current-carrying capacity per unit area of the wire is improved, and the utilization rate of the conductor is increased. On the other hand, because the cross-sectional area of the wire is smaller, more turns can be wound in the same magnetic core window, improving the utilization rate of the magnetic core and achieving the goal of saving copper, iron and reducing costs. Using a base with a saddle-shaped groove to replace the conventional base reduces the assembly difficulty, improves the assembly efficiency and the reliability of the product; through the above improvements, the problems of large X-direction dimension and difficult assembly are solved, the reliability of the product is improved, and the cost is reduced.

[0013] Adopting the above solution, the present utility model provides a new type of PFC inductor, which has the following technical effects:

[0014] (1) For the new type of PFC inductor of the present utility model, its X direction meets the dimensional requirements of the user, and the user can easily and naturally replace and upgrade it without modifying the PCB.

[0015] (2) For the new type of PFC inductor of the present utility model, the DC resistance is lower and the conversion efficiency is high.

[0016] (3) The material and labor costs of the new type of PFC inductor of the present utility model are low. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0018] Figure 2 is a schematic structural diagram of the base;

[0019] Figure 3 is a schematic structural diagram of another perspective of the base. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will describe the present utility model in detail with reference to the drawings and specific embodiments.

[0021] Please refer to Figures 1 - 3 , this embodiment provides a new type of PFC inductor, including: a base, an oval magnetic core 10, and a coil 11 wound around the oval magnetic core 10; the base is provided with a saddle-shaped groove 12, and the magnetic core is installed on the saddle-shaped groove 12.

[0022] In this embodiment, the inner side of the elliptical core 10 is an elliptical hole, and the coil 11 passes through the elliptical hole and winds around the elliptical core 10.

[0023] In this embodiment, the edges of the elliptical core 10 are chamfered.

[0024] In this embodiment, a lead hole 13 is provided inside the saddle-shaped groove 12, and the lead of the coil 11 passes through the lead hole 13.

[0025] In this embodiment, the base includes: a support frame 14 and mounting feet 15 mounted on the lower part of the support frame 14; the saddle-shaped groove 12 is provided on the upper surface of the support frame 14.

[0026] In this embodiment, the base further includes: a support frame 16 connected to the lower part of the support frame 14.

[0027] In this embodiment, the coil 11 is wound in a flat three-dimensional manner.

[0028] In this solution, by designing the inner and outer contours of the core to be elliptical, with a square cross-section and R2.5 chamfers on the four edges, the surface of the elliptical core 10 is smooth and free of burrs, so that the enameled wire can be spirally wound around the core and penetrate at high speed, realizing high-speed winding, improving the utilization rate of the machine, reducing the winding man-hours and labor costs. Since the core is elliptical, the X-direction dimension after winding is smaller, which can meet the dimension requirements of the user. In addition, the designer can adjust the dimension ratio of the major axis and minor axis of the ellipse according to the needs of the user to achieve the required finished product dimensions. By using flat wire instead of round enameled wire for vertical winding, the heat dissipation area is increased, the current-carrying capacity per unit area of the wire is improved, and the utilization rate of the conductor is increased. On the other hand, because the cross-sectional area of the wire is smaller, more turns can be wound in the same core window, improving the utilization rate of the core and achieving the goal of saving copper, saving iron and reducing costs. Using a base with a saddle-shaped groove 12 to replace the conventional base reduces the assembly difficulty, improves the assembly efficiency and the reliability of the product; through the above improvements, the problems of large X-direction dimension and difficult assembly are solved, the reliability of the product is improved, and the cost is reduced.

[0029] In summary, the present invention provides a novel PFC inductor, having the following technical effects:

[0030] (1) The novel PFC inductor of the present invention meets the dimension requirements of the user in the X direction, and the user can easily and naturally replace and upgrade it without modifying the PCB.

[0031] (2) The novel PFC inductor of the present invention has a lower DC resistance and a higher conversion efficiency.

[0032] (3) The materials and labor costs of the novel PFC inductor of the present utility model are low.

[0033] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A novel PFC inductor, characterized in that, Comprising: A base, an oval magnetic core, and a coil wound around the oval magnetic core; the base is provided with a saddle-shaped groove, and the magnetic core is mounted on the saddle-shaped groove.

2. A novel PFC inductor according to claim 1, wherein The inner side of the oval magnetic core is an oval hole, and the coil passes through the oval hole and is wound around the oval magnetic core.

3. The novel PFC inductor according to claim 2, wherein, The edge of the oval magnetic core is chamfered.

4. A novel PFC inductor according to claim 2, characterized in that, A lead hole is provided on the inner side of the saddle-shaped groove, and the lead of the coil passes through the lead hole.

5. A novel PFC inductor according to claim 1, characterized in that, The base includes: a support frame, and mounting feet installed at the lower part of the support frame; the saddle-shaped groove is arranged on the upper surface of the support frame.

6. A novel PFC inductor according to claim 5, characterized in that, The base further includes: a support frame connected to the lower part of the support frame.

7. A novel PFC inductor according to claim 1, characterized in that, The coil is wound in a flat three-dimensional manner.

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