Heat dissipation type transformer iron core
By setting through holes and ridges in the transformer core and combining three-way heat dissipation pipes for double heat dissipation treatment, the problem of not being able to effectively reduce the internal temperature of the transformer core in the prior art is solved, and efficient heat dissipation and power saving of the transformer are achieved.
Patent Information
- Application Number
- CN202421776995.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-25
AI Technical Summary
In the prior art, the heat dissipation device cannot effectively reduce the internal temperature of the transformer core, resulting in an increase in the resistance of the silicon steel sheet and causing electrical loss.
A heat-dissipating transformer core is designed, through holes and ridges are set at the corners of the silicon steel sheet, and the silicon steel sheet is fixed with bolts, and the interior and surface of the silicon steel sheet is combined with multiple three-way heat dissipation pipes.
Through dual heat dissipation treatment, the internal temperature of the transformer core is effectively reduced, electrical loss is avoided, and the transformer is working normally at a suitable temperature.
Smart Images
Figure CN222826184U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of transformer cores, and more specifically, to a heat dissipation transformer core. Background Art
[0002] The transformer core is the main magnetic circuit part of the transformer. It is usually made of hot-rolled or cold-rolled silicon steel sheets with high silicon content and coated with insulating paint. There are two ways to assemble silicon steel sheets: overlapping method and stacking method. The overlapping method is to distribute the openings of the silicon steel sheets one by one alternately on both sides. The stacking method is often used in places where DC current is passed. In order to avoid saturation caused by DC current, a gap needs to be left between the silicon steel sheets. Therefore, the stacking method puts the E sheet and the I sheet on each side, and the gap between the two can be adjusted with paper. The iron core and the coil wound on it form a complete electromagnetic induction system. The amount of power transmitted by the power transformer depends on the material and cross-sectional area of the iron core.
[0003] The transformer will generate heat during normal operation. In the related technology, a fan is generally used to blow air to reduce the temperature of the transformer itself. At the same time, a heat sink is arranged on the transformer shell to help dissipate heat.
[0004] However, the above method can only cool the outside of the transformer core, while the inside of the transformer core will still maintain a relatively high temperature, which will increase the resistance of the silicon steel sheet over time, thereby causing power loss. Utility Model Content
[0005] In view of this, an embodiment of the present application provides a heat dissipation transformer core to solve the problem that the heat dissipation device in the related art cannot dissipate the heat inside the transformer core.
[0006] In order to achieve the above objectives, the present application provides the following technical solutions:
[0007] A heat dissipation transformer core, comprising:
[0008] A plurality of silicon steel sheets, wherein the plurality of silicon steel sheets are stacked to form an iron core, and through holes are provided at the corners of the plurality of silicon steel sheets; the silicon steel sheets located on the first side in the thickness direction of the iron core are provided with a plurality of prisms, wherein the plurality of prisms are provided at the corners of the silicon steel sheets, and the prisms are provided with first holes connected to the through holes;
[0009] A bolt, the bolt passes through the through hole and the first hole, and fixes the plurality of silicon steel sheets to form the iron core, the bolt is provided with a second hole along the axial direction, and a nut is provided at the other end of the bolt;
[0010] A plurality of three-way heat dissipation tubes, wherein the first channels of the plurality of three-way heat dissipation tubes pass through the second holes and are connected to an external heat exchanger, the second channels and the third channels of the three-way heat dissipation tubes are respectively attached to the surface of the silicon steel sheet, and the second channels and the third channels of adjacent three-way heat dissipation tubes are connected.
[0011] In some possible implementations, the prism is made of a thermally conductive material, and the prism and the silicon steel sheet are integrally formed.
[0012] In some possible implementations, the three-way heat dissipation pipe is in contact with the side surface of the prism.
[0013] In some possible implementations, the outer diameter of the first channel of the three-way heat dissipation pipe is matched with the inner diameter of the second hole, and the outer wall of the first channel of the three-way heat dissipation pipe is in contact with the hole wall of the second hole.
[0014] In some possible implementations, adjacent three-way heat dissipation pipes are connected via pipe joints.
[0015] In some possible implementations, a groove matching the outer wall of the three-way heat dissipation pipe is provided on the surface of the silicon steel sheet.
[0016] The heat dissipation transformer core provided in the embodiment of the present application has at least the following beneficial effects:
[0017] In the heat dissipation transformer core provided in the embodiment of the present application, multiple silicon steel sheets are stacked to form an iron core, and the corners of the multiple silicon steel sheets are provided with through holes. The silicon steel sheet located on the first side of the thickness direction of the iron core is provided with multiple prisms, and multiple prisms are provided at the corners of the silicon steel sheets. The prisms are provided with first holes connected to the through holes. Bolts penetrate the through holes and the first holes, and fix the multiple silicon steel sheets to form an iron core. The bolts are provided with second holes along the axial direction, and nuts are provided at the other ends of the bolts. The first channels of multiple three-way heat dissipation pipes penetrate the second holes and are connected to the external heat exchanger. The second channels and third channels of the three-way heat dissipation pipes are respectively attached to the surface of the silicon steel sheet, and the second channels and third channels of adjacent three-way heat dissipation pipes are connected. With the above-mentioned structural design, the interior and surface of the silicon steel sheet can be subjected to double heat dissipation treatment through the three-way heat dissipation pipe, thereby ensuring that the transformer can work at an appropriate temperature to avoid the situation where the power loss is caused by the excessive temperature of the transformer core. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 A schematic diagram of the structure of a heat dissipation transformer core provided in an embodiment of the present application;
[0020] Figure 2 An exploded view of the heat dissipation transformer core provided in an embodiment of the present application;
[0021] Figure 3 This is a schematic diagram of the back structure of the heat dissipation transformer core provided in an embodiment of the present application.
[0022] In the figure:
[0023] 100, silicon steel sheet; 110, through hole; 200, prism; 210, first hole; 300, bolt; 310, second hole; 400, nut; 500, three-way heat dissipation pipe; 600, first channel; 700, second channel; 800, third channel; 900, groove. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] like Figure 1-Figure 3 As shown, the heat dissipation transformer core provided in the embodiment of the present application includes a plurality of silicon steel sheets 100, bolts 300 and a three-way heat dissipation pipe 500, wherein the plurality of silicon steel sheets 100 are stacked together in a specific manner to form the core. Through holes 110 are provided at the four corners of each silicon steel sheet 100, and the centers of the plurality of through holes 110 are all on the same straight line.
[0026] The outer surface of the silicon steel sheet 100 located at the outermost side in the thickness direction of the core is provided with a plurality of prisms 200, and the prisms 200 are provided at the corners of the silicon steel sheet 100. The prism 200 is obtained by changing a pyramid, and the part between the bottom surface of the pyramid and a cross section parallel to the bottom surface is called a prism. Each prism 200 is provided with a first hole 210, and the first hole 210 of the prism 200 is aligned with the through hole 110 of the silicon steel sheet 100. Preferably, the prism 200 can be a quadrangular pyramid structure, and the bottom surface and the top surface of the quadrangular pyramid are both similar quadrilaterals.
[0027] In this embodiment, a bolt 300 is inserted into the through hole 110 of the silicon steel sheet 100 and the first hole 210 of the prism 200. The length of the bolt 300 is greater than the thickness of the plurality of silicon steel sheets 100, that is, the bolt 300 can fix the plurality of silicon steel sheets 100 to form an iron core. The nut head of the bolt 300 abuts against the silicon steel sheet 100 on the first side in the thickness direction, and the other end of the bolt 300 abuts against the silicon steel sheet 100 on the second side in the thickness direction through the nut 400. In addition, the bolt 300 is also provided with a second hole 310 along the axial direction.
[0028] The three-way heat dissipation pipe 500 is a three-way pipe structure formed by splicing three independent heat dissipation pipes. Specifically, the three-way heat dissipation pipe 500 includes a first channel 600, a second channel 700 and a third channel 800. The first channel 600 passes through the second hole 310 of the bolt 300 and extends to the other side of the core thickness direction. The first channel 600 is connected to an external heat exchanger. The second channel 700 and the third channel 800 of the three-way heat dissipation pipe 500 are respectively laid on the outer surface of the silicon steel sheet 100. The second channel 700 and the third channel 800 are perpendicular to each other, and the adjacent second channels 700 and third channels 800 can be connected by pipe joints.
[0029] In the heat dissipation transformer core provided in the embodiment of the present application, multiple silicon steel sheets 100 are stacked to form an iron core, and through holes 110 are provided at the corners of the multiple silicon steel sheets 100. The silicon steel sheets 100 located on the first side in the thickness direction of the iron core are provided with multiple prisms 200, and the multiple prisms 200 are provided at the corners of the silicon steel sheets 100. The prisms 200 are provided with first holes 210 connected to the through holes 110. Bolts 300 penetrate through the through holes 110 and the first holes 210, and fix the multiple silicon steel sheets 100 to form the iron core. The bolts 300 are provided with second holes 310 along the axial direction, and the other end of the bolts 300 is provided with nuts 400. The first channels 600 of the three-way heat dissipation pipes 500 penetrate the second holes 310 and are connected to the external heat exchanger. The second channels 700 and the third channels 800 of the three-way heat dissipation pipes 500 are respectively attached to the surface of the silicon steel sheet 100, and the second channels 700 and the third channels 800 of the adjacent three-way heat dissipation pipes 500 are connected. With the above structural design, the three-way heat dissipation pipes 500 can perform double heat dissipation treatment on the inside and the surface of the silicon steel sheet 100, thereby ensuring that the transformer can work at an appropriate temperature to avoid power loss caused by excessive temperature of the transformer core.
[0030] In some embodiments, the prism 200 can be made of a thermally conductive material, and when the silicon steel sheet 100 generates heat, the heat can be dissipated outward through the prism 200. Since the prism 200 has multiple side surfaces, the prism 200 can help the silicon steel sheet 100 dissipate heat quickly.
[0031] In some embodiments, the three-way heat dissipation pipe 500 may be fitted with the side surface of the prism 200, specifically, the second channel 700 and the third channel 800 of the three-way heat dissipation pipe 500 may be fitted with the side surface of the prism 200. Since the prism 200 is in direct contact with the silicon steel sheet 100, heat can be transferred from the silicon steel sheet 100 to the prism 200. The second channel 700 and the third channel 800 of the three-way heat dissipation pipe 500 are fitted with the side surface of the prism 200, and heat exchange can be performed on the prism 200, thereby improving the heat dissipation efficiency of the iron core.
[0032] In some embodiments, the outer diameter of the first channel 600 of the three-way heat dissipation pipe 500 is matched with the aperture of the second hole 310 of the bolt 300, so that the first channel 600 can completely fit with the inner wall surface of the bolt 300, thereby improving the heat exchange effect.
[0033] In some embodiments, the surface of the silicon steel sheet 100 is provided with a groove 900 that is compatible with the outer wall of the three-way heat dissipation pipe 500. By setting the second channel 700 and the third channel 800 of the three-way heat dissipation pipe 500 in the groove 900 of the silicon steel sheet 100, the contact area between the three-way heat dissipation pipe 500 and the silicon steel sheet 100 can be further increased, thereby improving the efficiency of heat transfer and helping to quickly dissipate heat from the iron core.
[0034] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.
[0035] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.
[0036] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.
[0037] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).
[0038] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.
[0039] The term "substrate" as used herein refers to the material on which subsequent material layers are added. The substrate itself may be patterned. The material added on top of the substrate may be patterned, or may remain unpatterned. In addition, the substrate may include a wide range of materials, such as silicon, germanium, gallium arsenide, indium phosphide, etc. Alternatively, the substrate may be made of a non-conductive material (e.g., glass, plastic, or sapphire wafer, etc.).
[0040] The term "layer" used in the text may refer to a material portion including an area with a certain thickness. A layer may extend over the entire underlying structure or overlying structure, or may have a range smaller than the range of the underlying or overlying structure. In addition, a layer may be an area of a homogeneous or inhomogeneous continuous structure, the thickness of which is less than the thickness of the continuous structure. For example, a layer may be located between the top surface and the bottom surface of the continuous structure or between any paired lateral planes at the top surface and the bottom surface. A layer may extend laterally, vertically and / or along a tapered surface. A substrate may be a layer, may include one or more layers therein, and / or may have one or more layers located thereon, above it and / or below it. A layer may include multiple layers. For example, an interconnect layer may include one or more conductors and a contact layer (forming contacts, interconnects and / or vias therein) and one or more dielectric layers.
[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A heat dissipation transformer core, characterized in that: include: A plurality of silicon steel sheets (100), wherein the plurality of silicon steel sheets (100) are stacked to form an iron core, and through holes (110) are provided at the corners of the plurality of silicon steel sheets (100); the silicon steel sheets (100) located on a first side in a thickness direction of the iron core are provided with a plurality of prisms (200), the plurality of prisms (200) are provided at the corners of the silicon steel sheets (100), and the prisms (200) are provided with first holes (210) connected to the through holes (110); a bolt (300), the bolt (300) passing through the through hole (110) and the first hole (210), and fixing a plurality of silicon steel sheets (100) to form the iron core, the bolt (300) being provided with a second hole (310) along the axial direction, and a nut (400) being provided at the other end of the bolt (300); A plurality of three-way heat dissipation pipes (500), wherein the first channels (600) of the plurality of three-way heat dissipation pipes (500) penetrate the second hole (310) and are connected to an external heat exchanger, and the second channels (700) and the third channels (800) of the three-way heat dissipation pipes (500) are respectively attached to the surface of the silicon steel sheet (100), and the second channels (700) and the third channels (800) of adjacent three-way heat dissipation pipes (500) are connected.
2. The heat dissipation transformer core according to claim 1, characterized in that: The prism (200) is made of a thermally conductive material, and the prism (200) and the silicon steel sheet (100) are integrally formed.
3. The heat dissipation transformer core according to claim 2, characterized in that: The three-way heat dissipation pipe (500) is in contact with the side surface of the prism (200).
4. The heat dissipation transformer core according to claim 1, characterized in that: The outer diameter of the first channel (600) of the three-way heat dissipation pipe (500) is matched with the inner diameter of the second hole (310), and the outer wall of the first channel (600) of the three-way heat dissipation pipe (500) is in contact with the hole wall of the second hole (310).
5. The heat dissipation transformer core according to claim 1, characterized in that: Adjacent three-way heat dissipation pipes (500) are connected via pipe joints.
6. The heat dissipation transformer core according to claim 1, characterized in that: The surface of the silicon steel sheet (100) is provided with a groove (900) adapted to the outer wall of the three-way heat dissipation pipe (500).