Induction heating capacitor with heat dissipation oil channel
By using a spacer bracket and a heat dissipation oil channel structure in the induction heating capacitor, the problem of the clamping plate hindering the flow of the impregnant and causing mechanical damage is solved, better heat dissipation and mechanical protection are achieved, and the service life of the capacitor is extended.
Patent Information
- Application Number
- CN202411426213.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2044-10-14
AI Technical Summary
In existing induction heating capacitors, the clamping plate blocks the flow of the impregnant, resulting in poor heat dissipation, and the electric force impacts the clamping plate, causing mechanical damage, which can easily lead to component breakdown and shorten the life of the capacitor.
A spacer bracket is used instead of a splint. The spacer bracket is provided with a heat dissipation oil channel along the length and width of the core space to ensure the flow of the impregnant, reduce the contact area with the components, and reduce temperature and mechanical damage.
By improving heat dissipation and reducing mechanical damage, it prevents component breakdown and extends capacitor life.
Smart Images
Figure CN118969505B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of capacitors, and in particular to an induction heating capacitor containing a heat dissipation oil channel. Background Art
[0002] Induction heating capacitors are capacitors used in induction heating systems. They typically have high voltage withstand capabilities and are widely used in the metal smelting industry.
[0003] Currently, induction heating capacitors often include two cores and a sandwich panel disposed between the two cores. The sandwich panel is often made of multiple stacked electrical cardboard sheets. However, the stacked electrical cardboard sheets hinder the flow of impregnant through the sandwich panel, affecting the impregnant's heat dissipation on the sandwich panel. This causes the core components near the sandwich panel to have higher temperatures. Furthermore, the electromotive force generated by the capacitor during operation can cause the components to continuously impact the sandwich panel, causing mechanical damage to the components. The combined effects of high temperature and mechanical damage can easily cause breakdown of components near the sandwich panel, thereby shortening the life of the capacitor. Summary of the Invention
[0004] The problem solved by the present invention is how to prevent components from breaking down to ensure the life of the capacitor.
[0005] To solve the above problems, the present invention provides an induction heating capacitor with a built-in heat dissipation oil channel.
[0006] The present invention provides an induction heating capacitor containing a heat dissipation oil channel, comprising a core and a spacer bracket; the two cores are arranged apart; the spacer bracket is arranged between the two cores, and the spacer bracket is provided with a first heat dissipation oil channel and a second heat dissipation oil channel, the first heat dissipation oil channel extends along the length direction of the space between the two cores, and its two ends respectively pass through the spacer bracket, and the second heat dissipation oil channel extends along the width direction of the space, and its two ends respectively pass through the spacer bracket.
[0007] Optionally, the spacing bracket includes a plurality of first partitions arranged in sequence along the length direction of the spacing space and a plurality of second partitions arranged in sequence along the width direction of the spacing space, and the first partitions and the second partitions are respectively perpendicular to the end surface of the core close to the spacing bracket; the first heat dissipation oil channel is provided on the plurality of the first partitions; the second heat dissipation oil channel is provided on the plurality of the second partitions.
[0008] Optionally, a plurality of first partitions are respectively provided with a first through hole, and the plurality of first through holes are sequentially connected to form the first heat dissipation oil channel.
[0009] Optionally, a plurality of the second heat dissipation oil channels are provided, and the plurality of the second heat dissipation oil channels are sequentially arranged on the spacing bracket along the length direction of the spacing space.
[0010] Optionally, the plurality of second heat dissipation oil channels include side heat dissipation oil channels; the ends of the plurality of second partitions are respectively provided with second through holes, and the plurality of second through holes are sequentially connected to form the side heat dissipation oil channels.
[0011] Optionally, the plurality of second heat dissipation oil passages include a central heat dissipation oil passage; the middle parts of the two outermost second baffles are disconnected to form a gap, the first baffle is inserted into the gap to divide the gap into two third through holes distributed in sequence along the length direction of the interval space, and the middle parts of the remaining second baffles are provided with a fourth through hole opposite to the third through hole, and the third through holes and the fourth through holes on the plurality of second baffles are connected in sequence to form the central heat dissipation oil passage.
[0012] Optionally, the core includes elements stacked in sequence in a direction away from the spacing bracket, and two elements of two cores close to each other respectively abut against the spacing bracket.
[0013] Optionally, heat dissipation copper tubes are further included, and the heat dissipation copper tubes are respectively installed on the side walls of the two cores.
[0014] Optionally, it further comprises a shell, which covers the core and the spacer bracket, and the shell is filled with an impregnating agent.
[0015] Optionally, the spacer bracket is made of electrical cardboard.
[0016] The beneficial effects of the induction heating capacitor with internal heat dissipation oil channels of the present invention are as follows: a spacer bracket is provided to replace the original clamping plate, and the spacer bracket is provided with a first heat dissipation oil channel and a second heat dissipation oil channel. The first heat dissipation oil channel extends along the length of the space between the two cores and penetrates the spacer bracket at both ends, allowing the impregnant to flow along the first heat dissipation oil channel, that is, along the length of the spacer bracket. At the same time, the second heat dissipation oil channel extends along the width of the space between the two cores and penetrates the spacer bracket at both ends, allowing the impregnant to flow along the second heat dissipation oil channel, that is, along the width of the spacer bracket. This ensures the flow of the impregnant at the spacer bracket, which is beneficial for improving the heat dissipation effect at the spacer bracket and reducing the temperature of the components in the core near the spacer bracket. In addition, the contact surface between the spacer bracket and the components is smaller than the contact surface between the clamping plate and the components, which can reduce obstruction to the components, thereby reducing impact and improving mechanical damage to the components. Therefore, the spacer bracket designed in the induction heating capacitor can not only reduce the temperature of the components in the core near the spacer bracket, but also improve mechanical damage to the components, thereby preventing component breakdown and ensuring the service life of the capacitor. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 Schematic diagram of the structure of an induction heating capacitor with a heat dissipation oil channel according to an embodiment of the present invention;
[0018] Figure 2 A schematic diagram of the partial structure of an induction heating capacitor with a heat dissipation oil channel according to an embodiment of the present invention;
[0019] Figure 3 This is a schematic structural diagram of the first heat dissipation oil channel of the spacer bracket according to an embodiment of the present invention;
[0020] Figure 4 This is a schematic structural diagram of the side heat dissipation oil channel of the spacer bracket according to an embodiment of the present invention;
[0021] Figure 5 This is a schematic structural diagram of the central heat dissipation oil channel of the spacer bracket according to an embodiment of the present invention.
[0022] Description of reference numerals:
[0023] 1. Core; 11. Component; 2. Spacer bracket; 21. First partition; 211. First through hole; 22. Second partition; 221. Second through hole; 222. Notch; 223. Third through hole; 224. Fourth through hole; 3. First heat dissipation oil channel; 4. Side heat dissipation oil channel; 5. Middle heat dissipation oil channel; 6. Heat dissipation copper tube; 7. Casing. DETAILED DESCRIPTION
[0024] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.
[0025] The Z-axis in the accompanying drawings represents the vertical direction, that is, the up-down position, with the positive direction of the Z-axis representing the top and the reverse direction of the Z-axis representing the bottom. The X-axis in the accompanying drawings represents the horizontal direction and is designated as the front-to-back position, with the positive direction of the X-axis representing the front side and the reverse direction of the X-axis representing the rear side. The Y-axis in the accompanying drawings represents the left-to-right position, with the positive direction of the Y-axis representing the left side and the reverse direction of the Y-axis representing the right side. It should also be noted that the aforementioned Z-axis, Y-axis, and X-axis are merely for the purpose of facilitating the description of the present invention and simplifying the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention.
[0026] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.
[0027] It should be noted that the modifications of "one" and "multiple" mentioned in the present invention are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".
[0028] The present invention provides an induction heating capacitor with a built-in heat dissipation oil channel to prevent component breakdown, thereby ensuring the life of the capacitor. Detailed description will be given below with reference to specific embodiments.
[0029] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides an induction heating capacitor with a built-in heat dissipation oil channel, comprising a core 1 and a spacer bracket 2; the two cores 1 are arranged apart; the spacer bracket 2 is arranged between the two cores 1, and the spacer bracket 2 is provided with a first heat dissipation oil channel 3 and a second heat dissipation oil channel, the first heat dissipation oil channel 3 extends along the length direction of the space between the two cores 1, and its two ends respectively pass through the spacer bracket 2, and the second heat dissipation oil channel extends along the width direction of the space, and its two ends respectively pass through the spacer bracket 2.
[0030] It should be noted that the spacing space is the space formed between the end faces of the two cores 1 that are close to each other, wherein the length direction is Figure 1 The Y-axis direction is shown, and the width direction is Figure 1 The X-axis direction is shown.
[0031] In this embodiment, a spacer bracket 2 is provided to replace the original splint, and a first heat dissipation oil channel 3 and a second heat dissipation oil channel are provided on the spacer bracket 2, wherein the first heat dissipation oil channel 3 extends along the length direction of the spacing space between the two cores 1, and its two ends respectively penetrate the spacer bracket 2, so that the impregnant can flow along the first heat dissipation oil channel 3, that is, flow along the length direction of the spacer bracket 2, while the second heat dissipation oil channel extends along the width direction of the spacing space, and its two ends respectively penetrate the spacer bracket 2, so that the impregnant can flow along the second heat dissipation oil channel, that is, flow along the width direction of the spacer bracket 2, thereby ensuring the flow of the impregnant at the spacer bracket 2, which is beneficial to improving the heat dissipation effect at the spacer bracket 2 and reducing the temperature of the component 11 in the core 1 close to the spacer bracket 2; in addition, the contact surface between the spacer bracket 2 and the component 11 is smaller than the contact surface between the splint and the component 11, which can reduce the obstruction to the component 11, thereby helping to reduce the impact and thus improve the mechanical damage of the component 11. Therefore, the spacer 2 designed for the induction heating capacitor can not only reduce the temperature of the element 11 in the core 1 close to the spacer 2, but also improve the mechanical damage of the element 11, thereby preventing the element 11 from breaking down and ensuring the service life of the capacitor.
[0032] Alternatively, as Figure 2 and Figure 3 As shown, the spacing bracket 2 includes a plurality of first partitions 21 arranged in sequence along the length direction of the spacing space and a plurality of second partitions 22 arranged in sequence along the width direction of the spacing space, the first partitions 21 and the second partitions 22 are respectively perpendicular to the end surface of the core 1 close to the spacing bracket 2; the first heat dissipation oil channel 3 is provided on the plurality of the first partitions 21; the second heat dissipation oil channel is provided on the plurality of the second partitions 22.
[0033] It should be noted that the present application does not limit the specific number of the first partitions 21, for example, it can be three, four, five, etc. Specifically, in this embodiment, the number of the first partitions 21 is five; the present application does not limit the specific number of the second partitions 22, for example, it can be three, four, five, etc. Specifically, in this embodiment, the number of the second partitions 22 is four.
[0034] In this optional embodiment, the spacing bracket 2 includes a plurality of first partitions 21 arranged in sequence along the length direction of the spacing space and a plurality of second partitions 22 arranged in sequence along the width direction of the spacing space. In this way, the spacing bracket 2 can be a hollow structure as a whole. When the electric force generated by the capacitor drives the element 11 to impact the spacing bracket 2, the hollow part can serve as a space for the element 11 to deform, which can reduce the impact of the element 11 on the spacing bracket 2 and avoid mechanical damage caused by the impact of the softer element 11 on the harder spacing bracket 2.
[0035] Alternatively, as Figure 3 As shown, a plurality of first partitions 21 are respectively provided with first through holes 211 , and the plurality of first through holes 211 are sequentially connected to form the first heat dissipation oil channel 3 .
[0036] In this optional embodiment, the first heat dissipation oil channel 3 is composed of first through holes 211 distributed on multiple first partitions 21. The composition of the first heat dissipation oil channel 3 is simple, which helps to reduce the difficulty of processing and manufacturing.
[0037] Optionally, a plurality of the second heat dissipation oil channels are provided, and the plurality of the second heat dissipation oil channels are sequentially arranged on the spacing bracket 2 along the length direction of the spacing space.
[0038] It should be noted that the present application does not limit the specific number of the second heat dissipation oil channels, for example, it can be three, four, five, etc. Specifically in this embodiment, the number of the second heat dissipation oil channels is four.
[0039] In this optional embodiment, the plurality of second heat dissipation oil channels can provide a plurality of paths for the impregnant to flow along the width direction of the spacer bracket 2 , which is more conducive to improving the heat dissipation effect of the impregnant near the spacer bracket 2 .
[0040] Alternatively, as Figure 4 As shown, the plurality of second heat dissipation oil channels include a side heat dissipation oil channel 4 ; the ends of the plurality of second partitions 22 are respectively provided with second through holes 221 , and the plurality of second through holes 221 are sequentially connected to form the side heat dissipation oil channel 4 .
[0041] Specifically, there may be two side heat dissipation oil passages 4 , and the two side heat dissipation oil passages 4 are respectively close to the left and right ends of the spacer bracket 2 .
[0042] In this optional embodiment, the side heat dissipation oil channel 4 is composed of second through holes 221 distributed on multiple second partitions 22. The composition of the side heat dissipation oil channel 4 is simple, which helps to reduce the difficulty of processing and manufacturing.
[0043] Alternatively, as Figure 5 As shown, multiple second heat dissipation oil channels include a central heat dissipation oil channel 5; the middle parts of the two outermost second baffles 22 are disconnected to form a gap 222, and the first baffle 21 is inserted into the gap 222 to separate the gap 222 into two third through holes 223 distributed in sequence along the length direction of the interval space, and the middle parts of the remaining second baffles 22 are provided with a fourth through hole 224 opposite to the third through hole 223, and the third through holes 223 and the fourth through holes 224 on multiple second baffles 22 are connected in sequence to form the central heat dissipation oil channel 5.
[0044] Specifically, there may be two central heat dissipation oil passages 5. It should be noted that the two outermost second baffles 22 refer to the two second baffles 22 located on either side of the width direction of the spacer bracket 2 among the plurality of second baffles 22, and the remaining second baffles 22 refer to the remaining second baffles 22 among the plurality of second baffles 22 excluding the two outermost second baffles 22.
[0045] It can be understood that since the middle position of the spacer bracket 2 in the length direction is far away from the heat dissipation copper tube 6, the heat dissipation effect of the middle position of the spacer bracket 2 in the length direction is worse than that of the four sides of the spacer bracket 2. In this optional embodiment, the middle heat dissipation oil channel 5 is composed of two third through holes 223 at both ends and two fourth through holes 224 in the middle, and the two third through holes 223 are only separated by the first partition plate 21, so that two middle heat dissipation oil channels 5 can be concentrated in the middle of the spacer bracket 2 at the same time. Compared with a single heat dissipation oil channel, this scheme has a larger flow area in the middle of the spacer bracket 2, which can improve the heat dissipation effect generated by the flow of the impregnant therein, and ensure the overall heat dissipation balance of the spacer bracket 2.
[0046] Alternatively, as Figure 2 As shown, the core 1 includes elements 11 stacked in sequence in a direction away from the spacer bracket 2 , and two elements 11 close to each other of the two cores 1 respectively abut against the spacer bracket 2 .
[0047] In this optional embodiment, the element 11 abuts against the spacer bracket 2, so that the spacer bracket 2 can provide better support and insulation for the two cores 1, thereby improving the performance of the capacitor.
[0048] Alternatively, as Figure 1 As shown, the induction heating capacitor with a heat dissipation oil channel further includes a heat dissipation copper tube 6 , and the heat dissipation copper tube 6 is respectively installed on the side walls of the two cores 1 .
[0049] Specifically, the heat dissipation copper tube 6 can be U-shaped. Specifically, two heat dissipation copper tubes 6 can be provided, and the two heat dissipation copper tubes 6 are respectively located on two opposite side walls of the core 1.
[0050] In this optional embodiment, circulating water can be passed through the heat dissipation copper tube 6 to dissipate heat from the core 1 and the spacer bracket 2 when the capacitor is working, thereby preventing the capacitor from being overheated and causing performance degradation.
[0051] Alternatively, as Figure 1 As shown, the induction heating capacitor with a heat dissipation oil channel further includes a shell 7 , which is disposed on the core 1 and the spacer bracket 2 , and is filled with an impregnating agent.
[0052] Specifically, the material of the housing 7 may be aluminum alloy. Specifically, the impregnating agent may be benzyltoluene.
[0053] In this optional embodiment, after the impregnant flows between the core 1 and the spacer bracket 2, the obtained heat can be transferred to the shell 7, and finally dissipated from the shell 7 to the external environment of the capacitor, thereby achieving heat dissipation and ensuring the working performance and service life of the capacitor.
[0054] Optionally, the spacer bracket 2 is made of electrical cardboard.
[0055] In this optional embodiment, electrical paperboard is used as the material of the spacer bracket 2. Electrical paperboard has good mechanical strength and insulation performance, so as to better support and insulate the two cores 1.
[0056] The following further illustrates the beneficial effects of the induction heating capacitor with internal heat dissipation oil channels, using specific experimental data. Simulations were performed on the pre-improved and post-improved induction heating capacitors to obtain the hottest point temperature, average core temperature, and original damage point temperature of the induction heating capacitors. In the pre-improved induction heating capacitor, a plywood was placed between the two cores, while in the post-improved induction heating capacitor, a spacer was placed between the two cores. The hottest point temperature is the hottest temperature of the induction heating capacitor, the average core temperature is the average core temperature after the induction heating capacitor reaches stability, and the original damage point temperature is the temperature of the component closest to the plywood or spacer after the induction heating capacitor reaches stability. The obtained hottest point temperature, average core temperature, and original damage point temperature are entered into Tables 1-3 below.
[0057] Table 1 Hottest point temperature
[0058]
[0059] Table 2 Average heart temperature
[0060]
[0061] Table 3 Temperature of original damage point
[0062]
[0063] As can be seen from Table 1, compared with the induction heating capacitor before the improvement, the hottest point temperature of the improved induction heating capacitor is lower. As can be seen from Table 2, compared with the induction heating capacitor before the improvement, the average core temperature of the improved induction heating capacitor is lower. As can be seen from Table 3, compared with the induction heating capacitor before the improvement, the temperature of the original damage point of the improved induction heating capacitor is greatly reduced, with a temperature reduction percentage of nearly 14.1%. This further illustrates that the induction heating capacitor with a built-in heat dissipation oil channel of the present invention effectively reduces the temperature of the components near the spacer bracket in the core, can prevent the components from breaking down, and ensure the service life.
[0064] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.
Claims
1. An induction heating capacitor with a heat dissipation oil channel, characterized in that: The invention comprises a core (1) and a spacing bracket (2); the two cores (1) are arranged to be spaced apart; the spacing bracket (2) is arranged between the two cores (1); the spacing bracket (2) is provided with a first heat dissipation oil channel (3) and a second heat dissipation oil channel; the first heat dissipation oil channel (3) extends along the length direction of the spacing space between the two cores (1), and its two ends respectively pass through the spacing bracket (2); the second heat dissipation oil channel extends along the width direction of the spacing space, and its two ends respectively pass through the spacing bracket (2); the spacing bracket (2) includes a first heat dissipation oil channel (3) and a second heat dissipation oil channel (3) along the length direction of the spacing space. A plurality of first baffles (21) are sequentially arranged in a spaced-apart direction and a plurality of second baffles (22) are sequentially arranged in a spaced-apart direction along the width direction of the spacing space, wherein the first baffles (21) and the second baffles (22) are respectively perpendicular to the end face of the core (1) close to the spacing bracket (2); the first heat dissipation oil channel (3) is provided on the plurality of first baffles (21); the second heat dissipation oil channel is provided on the plurality of second baffles (22); the plurality of first baffles (21) and the plurality of second baffles (22) are staggered with each other, so that the spacing bracket (2) is a hollow structure as a whole.
2. The induction heating capacitor with a heat dissipation oil channel according to claim 1, characterized in that: A plurality of first partitions (21) are respectively provided with first through holes (211), and the plurality of first through holes (211) are sequentially connected to form the first heat dissipation oil channel (3).
3. The induction heating capacitor with a heat dissipation oil channel according to claim 1, characterized in that: A plurality of the second heat dissipation oil channels are provided, and the plurality of the second heat dissipation oil channels are arranged in sequence on the spacing bracket (2) along the length direction of the spacing space.
4. The induction heating capacitor with a heat dissipation oil channel according to claim 3, characterized in that: The plurality of second heat dissipation oil passages include a side heat dissipation oil passage (4); the ends of the plurality of second partitions (22) are respectively provided with a second through hole (221), and the plurality of second through holes (221) are sequentially connected to form the side heat dissipation oil passage (4).
5. The induction heating capacitor with a heat dissipation oil channel according to claim 3, characterized in that: The plurality of second heat dissipation oil passages include a central heat dissipation oil passage (5); the middle portions of the two outermost second partitions (22) are disconnected to form a notch (222); the first partition (21) is inserted into the notch (222) to separate the notch (222) into two third through holes (223) distributed in sequence along the length direction of the separation space; the middle portions of the remaining second partitions (22) are provided with a fourth through hole (224) opposite to the third through hole (223); the third through holes (223) and the fourth through holes (224) on the plurality of second partitions (22) are connected in sequence to form the central heat dissipation oil passage (5).
6. The induction heating capacitor with a heat dissipation oil channel according to claim 1, characterized in that: The core (1) comprises elements (11) stacked in sequence in a direction away from the spacer bracket (2), and two elements (11) close to each other of the two cores (1) respectively abut against the spacer bracket (2).
7. The induction heating capacitor with a heat dissipation oil channel according to claim 1, characterized in that: It also includes heat dissipation copper tubes (6), which are respectively installed on the side walls of the two cores (1).
8. The induction heating capacitor with a heat dissipation oil channel according to claim 1, characterized in that: It also comprises a shell (7), the shell (7) being arranged to cover the core (1) and the spacer bracket (2), and the shell (7) being filled with an impregnating agent.
9. The induction heating capacitor with a heat dissipation oil channel according to claim 1, characterized in that: The material of the spacer bracket (2) is electrical paperboard.
Citation Information
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