Air-core reactor
By combining a buffer layer of flexible thermally conductive material with a liquid cooling channel in the hollow reactor, the heat dissipation and noise problems of traditional hollow reactors at high power levels are solved, achieving better heat dissipation and noise control.
Patent Information
- Application Number
- CN202421847092.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-07-31
AI Technical Summary
Traditional air-core reactors struggle to meet heat dissipation requirements at high power levels and high power densities, and also generate noise.
A buffer layer made of flexible thermally conductive material tightly fits the coil to the housing of the liquid cooling channel, enhancing heat dissipation and removing heat through the liquid cooling channel. At the same time, the buffer layer acts as a shock absorber to reduce noise.
This achieves efficient heat dissipation and noise reduction in the air-core reactor, improving the stability and performance of the equipment.
Smart Images
Figure CN223526974U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of electric reactors, and in particular to a hollow electric reactor. BACKGROUND
[0002] Electric reactors are indispensable devices in power electronic equipment, such as photovoltaic inverters, wind power converters, frequency converters, energy storage inverters, etc. Hollow electric reactors use air as a magnetic medium and have good performance in most working conditions due to their stability. However, with the increase of power level and power density, traditional hollow electric reactors have been difficult to meet the current heat dissipation requirements and also bring some noise. CONTENT OF THE INVENTION
[0003] The present application provides a hollow electric reactor to enhance the heat dissipation effect of the hollow electric reactor and reduce the noise generated by the hollow electric reactor.
[0004] The present application provides a hollow electric reactor, comprising a shell, at least one liquid cooling channel is provided between the inner surface and the outer surface of the shell.
[0005] The shell also contains a coil, the coil and the inner surface of the shell are provided with a buffer layer, and the buffer layer is made of a flexible heat-conducting material.
[0006] In an example, the shell comprises a first fixed plate and a second fixed plate arranged face to face and spaced apart, and a wall extending circumferentially from the first fixed plate to the second fixed plate.
[0007] In an example, the first fixed plate and the second fixed plate are provided with fixing holes, and the fixing holes cooperate with the fixing connectors to fix the first fixed plate and the second fixed plate.
[0008] In an example, the liquid cooling channel is embedded in the wall of the shell.
[0009] In an example, the liquid cooling channel extends along the length direction of the shell.
[0010] In an example, the coil is wound into a single-layer multi-turn cylindrical structure by a wire material.
[0011] In an example, the cross-sectional shape of the wire material is one of circular, square, rectangular, and polygonal.
[0012] In an example, the buffer layer has insulation capability.
[0013] In an example, an insulation layer is provided between the buffer layer and the inner surface of the shell.
[0014] In an example, a first air layer is arranged between the inner surface of the shell and the insulation layer; and / or, a second air layer is arranged between the insulation layer and the buffer layer; and / or, a third air layer is arranged between the buffer layer and the coil.
[0015] The hollow reactor provided by the application can enhance the heat dissipation effect of liquid cooling by using the buffer layer made of flexible heat-conductive material to tightly fit the coil of the hollow reactor with the shell having liquid cooling channels, and can reduce the noise generated by the reactor. BRIEF DESCRIPTION OF DRAWINGS
[0016] One or more embodiments are illustrated by way of example in the figures that form a part of this disclosure and which are shown by way of illustration in the drawings and are not intended to limit the scope of the application unless otherwise specifically indicated, the drawings showing an exemplary embodiment(s) having the same reference numerals designate similar elements, and in which:
[0017] Figure 1 is a schematic diagram of the hollow reactor provided by the embodiment of the application;
[0018] Figure 2 is a schematic diagram of the cross section of the hollow reactor provided by the embodiment of the application.
[0019] Figure 3 is a schematic diagram of the shell provided by the embodiment of the application;
[0020] Figure 4 is a schematic diagram of the coil provided by the embodiment of the application. DETAILED DESCRIPTION
[0021] In order to facilitate the understanding of the present application, the present application will be described in more detail below in conjunction with the drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the present application are only for the purpose of describing the specific embodiments of the present application and are not intended to limit the present application. The term "and / or" used in the present application includes any and all combinations of one or more related listed items.
[0022] As shown in Figures 1-4 The embodiment of the present application provides a hollow reactor 10, which comprises a shell 11.
[0023] In an example, the shell 11 comprises a first fixed plate 111 and a second fixed plate 112 arranged face to face and spaced apart, and a wall 113 extending circumferentially from the first fixed plate 111 to the second fixed plate 112.
[0024] The first fixing plate 111 and the second fixing plate 112 are provided with fixing holes 114, which are matched with fixing connectors, such as screws, to fix the first fixing plate 111 and the second fixing plate 112.
[0025] The wall 113 of the shell 11 is a non-closed tube in the circumferential direction. At least one liquid cooling channel 115 is arranged in the wall 113 of the shell 11, i.e. the liquid cooling channel 115 is embedded in the wall 113 of the shell 11 between the inner surface and the outer surface of the shell 11. The liquid cooling channel 115 extends along the length direction of the shell 11 and penetrates through the two opposite end faces in the length direction of the shell 11.
[0026] In the example shown in the figure, three liquid cooling channels 115 are arranged, and a hose can be inserted into each liquid cooling channel 115. The hoses in adjacent liquid cooling channels 115 can be connected by a structure to form a single channel. The hose can be filled with a cooling medium, such as water.
[0027] The air-core reactor 10 further comprises a coil 12 and a buffer layer 13.
[0028] In an example, the coil 12 is wound by a wire material into a single-layer multi-turn cylindrical structure. The cross-sectional shape of the wire material is one of a circle, a square, a rectangle, and a polygon.
[0029] The coil 12 is contained in the shell 11, and the buffer layer 13 is arranged between the coil 12 and the inner surface of the shell 11. The buffer layer 13 is made of a flexible heat-conductive material, such as silica gel. In this way, on the one hand, the heat of the coil 12 can be conducted to the shell 11, and then taken away by the cooling medium in the liquid cooling channel 115, thereby achieving good heat dissipation effect; on the other hand, the buffer layer 13 can reduce the noise generated by the reactor.
[0030] In an example, the buffer layer 13 has an insulation capability; or, an insulation layer 14 is arranged between the buffer layer 13 and the inner surface of the shell 11, thereby achieving electrical insulation.
[0031] In an example, a first air layer 15 is arranged between the inner surface of the shell 11 and the insulation layer 14; and / or, a second air layer 16 is arranged between the insulation layer 14 and the buffer layer 13; and / or, a third air layer 17 is arranged between the buffer layer 13 and the coil 12.
[0032] The thicknesses of the first air layer 15, the second air layer 16, and the third air layer 17 are as small as possible, so that the shell 11, the insulation layer 14, the buffer layer 13, and the coil 12 are tightly attached. Figure 2 The air layer 121 in the coil 12 is also shown, and the thickness of the air layer 121 is not limited.
[0033] It should be noted that the preferred embodiments of the present application are described in the specification and its attached drawings, but the present application can be implemented in many different forms and is not limited to the embodiments described in the specification, and these embodiments are not intended to be additional limitations on the content of the present application, and the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Furthermore, each of the above technical features continues to combine to form various embodiments not listed above, which are considered to be within the scope of the present application specification; further, for those skilled in the art, the above description can be improved or changed, and all these improvements and changes shall fall within the scope of protection of the claims of the present application.
Claims
1. A hollow reactor, characterized by, The shell comprises at least one liquid cooling channel between the inner surface and the outer surface of the shell. The coil is accommodated in the shell, and a buffer layer is arranged between the coil and the inner surface of the shell, the buffer layer being made of flexible heat-conductive material.
2. The air-core reactor of claim 1, wherein The shell comprises a first fixed plate and a second fixed plate arranged face to face and spaced apart, and a wall extending from the first fixed plate to the second fixed plate in a circumferential direction.
3. The air-core reactor of claim 2, wherein, The first fixed plate and the second fixed plate are provided with fixing holes, and the fixing holes are matched with fixing connectors to fix the first fixed plate and the second fixed plate.
4. The air-core reactor of claim 2, wherein, The liquid cooling channel is embedded in the wall of the shell.
5. The air-core reactor of claim 2, wherein, The liquid cooling channel extends along the length direction of the shell.
6. The air-core reactor of claim 1, wherein The coil is wound by wire material into a single-layer multi-turn cylindrical structure.
7. The air-core reactor of claim 6, wherein, The cross-sectional shape of the wire material is one of a circle, a square, a rectangle, and a polygon.
8. The air-core reactor of claim 1, wherein, The buffer layer has insulation capability.
9. The air-core reactor of claim 1, wherein, An insulation layer is arranged between the buffer layer and the inner surface of the shell.
10. The air-core reactor of claim 9, wherein, A first air layer is arranged between the inner surface of the shell and the insulation layer; and / or, a second air layer is arranged between the insulation layer and the buffer layer; and / or, a third air layer is arranged between the buffer layer and the coil.