Heat dissipation type inductor

Abstract

The utility model belongs to the technical field of power electronic devices, and particularly relates to a heat dissipation type inductor which comprises a shell and an inductor body, the inductor body is arranged in the shell, ventilation holes are formed in the bottom of the shell, a plurality of sets of heat conduction protruding strips are arranged in the shell and arranged in the circumferential direction of a heat conduction pipe, and the heat conduction pipe is arranged in the shell. Air guide channels are arranged between every two adjacent sets of heat conduction protruding strips, a heat conduction pipe is arranged in the shell, the heat conduction pipe and the ventilation holes are coaxially arranged, the multiple air guide channels are arranged in the circumferential direction of the heat conduction pipe, a plurality of first heat dissipation holes are formed in the side wall of the heat conduction pipe, and the air guide channels correspond to the first heat dissipation holes in a one-to-one mode and communicate with the first heat dissipation holes, so that the heat dissipation efficiency is improved. And the heat dissipation effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of power electronic devices, and particularly relates to a heat-dissipating inductor. Background Technique

[0002] The statements in this part only provide background technical information related to the utility model, and do not necessarily constitute prior art.

[0003] A common mode inductor, also called a common mode choke, is often used in computer switching power supplies to filter common mode electromagnetic interference signals; in board design, the common mode inductor plays an EMI filtering role to suppress the electromagnetic waves generated by high-speed signal lines from radiating outward.

[0004] The existing common mode inductor includes a housing and an inductor body. The inductor body includes an annular magnetic core and a winding coil, which is arranged in the housing by means of dispensing. The housing plays a shielding role. However, when the inductor is working, the winding coil will generate a large amount of heat and accumulate in the housing. Among them, the temperature in the middle and at the bottom of the inductor body is relatively high, which is not easy to dissipate, and the heat dissipation effect is poor, resulting in a relatively fast aging rate of the winding coil of the inductor body and reducing the service life. Summary of the Invention

[0005] In order to solve the above problems, the utility model provides a heat-dissipating common mode inductor.

[0006] According to some embodiments, the solution of the utility model provides a heat-dissipating inductor, adopting the following technical scheme:

[0007] A heat-dissipating inductor includes a housing and an inductor body. The inductor body is arranged in the housing. Ventilation holes are arranged at the bottom of the housing. A plurality of heat-conducting convex strips are arranged in the housing. The plurality of heat-conducting convex strips are arranged along the circumferential direction of the heat-conducting tube. A wind guiding channel is arranged between adjacent two groups of heat-conducting convex strips. A heat-conducting tube is arranged in the housing. The heat-conducting tube is coaxially arranged with the ventilation holes. A plurality of the wind guiding channels are arranged along the circumferential direction of the heat-conducting tube. A plurality of first heat dissipation holes are arranged on the side wall of the heat-conducting tube. The wind guiding channels correspond to and communicate with the first heat dissipation holes one by one.

[0008] As a further technical limitation, the heat-conducting convex strip includes a first convex strip and a second convex strip. The first convex strip is connected to the inner side wall of the housing. The second convex strip is connected to the inner bottom of the housing. One end of the first convex strip close to the inner bottom of the housing is connected to one end of the second convex strip.

[0009] As a further technical limitation, a heat-conducting glue layer is arranged between each group of heat-conducting convex strips.

[0010] As a further technical limitation, one end of the heat conduction tube away from the ventilation hole is detachably connected with a positioning plate. The positioning plate is annular and coaxially arranged with the ventilation hole.

[0011] As a further technical limitation, a plurality of heat dissipation fins are arranged on the positioning plate, and the plurality of heat dissipation fins are inserted into the heat conduction tube.

[0012] As a further technical limitation, a plurality of heat dissipation fins are arranged on the positioning plate, and the plurality of heat dissipation fins are inserted into the heat conduction tube.

[0013] As a further technical limitation, a guide block is connected to one side of the heat dissipation fin. A plurality of heat dissipation fins are arranged on the positioning plate, and the plurality of heat dissipation fins are inserted into the heat conduction tube.

[0014] As a further technical limitation, a guide block is connected to one side of the heat dissipation fin. A guide groove corresponding to the guide block is provided on the inner side wall of the heat conduction tube. The end of the guide groove close to the positioning plate is arranged along the height direction of the heat conduction tube, and the guide block is in sliding fit with the guide groove.

[0015] As a further technical limitation, an elastic clamping block is arranged at one end of the heat conduction tube away from the ventilation hole. A clamping hole corresponding to the elastic clamping block is provided on the positioning plate, and the elastic clamping block is in clamping fit with the clamping hole.

[0016] As a further technical limitation, a ventilation groove is provided at the bottom of the housing, and the ventilation groove is communicated with the ventilation hole.

[0017] As a further technical limitation, a plurality of the first heat dissipation holes and the plurality of heat dissipation fins are arranged at intervals along the circumferential direction of the heat conduction tube.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] The present utility model discloses a heat dissipation type inductor. A heat conduction tube, a ventilation hole and a ventilation groove are arranged in a housing. At the same time, a first heat dissipation hole is arranged on the heat conduction tube. A plurality of heat conduction convex strips are also arranged in the housing, so that there is a certain gap between the inductor body and the housing to form a wind guiding channel. Through the above settings, heat dissipation channels are formed in the middle and periphery of the inductor body, and the heat generated in the middle, bottom and side of the inductor body can be quickly led out and dissipated through the wind guiding channel, the first heat dissipation hole and the heat conduction tube, thereby improving the heat dissipation effect of the inductor. Description of the Drawings

[0020] The specification drawings forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0021] Figure 1 is the overall structure diagram of the embodiment of the present utility model;

[0022] Figure 2 is another overall structure diagram of the embodiment of the present utility model;

[0023] Figure 3 is the top view of the embodiment of the present utility model;

[0024] Figure 4 is the cross-sectional view of the embodiment of the present utility model.

[0025] Wherein, 1. housing; 2. inductor body; 3. heat conduction tube; 4. first heat dissipation hole; 5. ventilation hole; 6. heat conduction rib; 601. first rib; 602. second rib; 7. air guiding channel; 8. positioning plate; 9. heat sink; 10. guiding block; 11. guiding groove; 12. elastic clamping block; 13. clamping hole; 14. limiting plate; 15. ventilation groove; 16. heat conduction adhesive layer; 17. second heat dissipation hole; 18. perforation. Detailed implementation manners

[0026] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] This embodiment introduces a heat dissipation type inductor.

[0028] As Figure 1 shown, a heat dissipation type inductor includes a housing 1 and an inductor body 2, and the inductor body 2 is arranged inside the housing 1. Specifically, the inductor body 2 includes a magnetic core and a winding coil, and the winding coil is wound around the magnetic core. The housing 1 is made of ceramic material.

[0029] Combined with Figure 2 and Figure 4 , a ventilation groove 15 and a ventilation hole 5 are arranged at the bottom of the housing 1. Specifically, the ventilation hole 5 penetrates through the bottom of the housing 1. The ventilation groove 15 can be set to be one or more, and both ends of the ventilation groove 15 are ventilation openings. In this embodiment, the number of the ventilation grooves 15 is multiple, and the multiple ventilation grooves 15 are arranged circumferentially along the ventilation hole 5. At the same time, a heat conduction tube 3 is arranged inside the housing 1, and the heat conduction tube 3 can be made of ceramic material or non-magnetic metal material. The heat conduction tube 3 is arranged vertically and connected to the inner bottom of the housing 1, and the connection manner can be integrally formed or bonded. In this embodiment, the heat conduction tube 3 is coaxially arranged with the ventilation hole 5, and a plurality of first heat dissipation holes 4 are arranged circumferentially on the outer side wall of the heat conduction tube 3, and the first heat dissipation holes 4 are arranged along the height direction of the heat conduction tube 3.

[0030] When the inductor body 2 is installed inside the housing 1, the heat conduction tube 3 passes through the inductor body 2. The heat conduction tube 3 can not only play a positioning role for the inductor body 2, but also conduct the heat generated by the winding coil wound inside the magnetic core.

[0031] Combined with Figure 2 and Figure 4 , multiple sets of heat-conducting ridges 6 are arranged inside the housing 1. The multiple sets of heat-conducting ridges 6 are arranged circumferentially along the heat-conducting tube 3. An air guiding channel 7 is arranged between adjacent two sets of heat-conducting ridges 6. A second heat dissipation hole 17 corresponding to the air guiding channel 7 is arranged on the outer side wall of the housing 1. The air guiding channel 7 is communicated with the first heat dissipation hole 4 and the second heat dissipation hole 17. In addition, four through holes 18 are arranged at the bottom of the housing 1 for the terminals of the winding coil to pass through, and the through holes 18 can be located between adjacent two sets of heat-conducting ridges 6.

[0032] Specifically, the heat-conducting ridge 6 includes a first ridge 601 and a second ridge 602. The first ridge 601 is arranged on the inner side wall of the housing 1 and is arranged along the height direction of the housing 1 from the top to the bottom of the housing 1. The second ridge 602 is arranged on the inner bottom of the housing 1 and is arranged along the radial direction of the housing 1 from the heat-conducting tube 3 to the inner side wall of the housing 1. One end of the first ridge 601 close to the bottom of the housing 1 is connected to one end of the second ridge 602 close to the first ridge 601. The first ridge 601 of the heat-conducting ridge 6 defines the positions on both sides of the inductor body 2, and the second ridge 602 supports the inductor body 2, so that there is a certain gap between the inductor body 2 and the housing 1, thus forming the air guiding channel 7. In addition, a glue application position is arranged on the side of the second ridge 602 close to the heat-conducting tube 3 for facilitating glue application.

[0033] The air guiding channel 7, the ventilation holes 5, the ventilation grooves 15, the first heat dissipation holes 4, the second heat dissipation holes 17 and the heat-conducting tube 3 form a heat dissipation channel, so that the heat generated around the winding coil of the inductor body 2 is quickly led out through the heat dissipation channel, thereby improving the heat dissipation effect of the inductor.

[0034] Each group of heat-conducting ridges 6 is two. A heat-conducting glue layer 16 is arranged between the two heat-conducting ridges 6. The heat-conducting glue layer 16 contacts the winding coil of the inductor body 2 and transfers the generated heat to the heat-conducting ridges 6 to be led out through the heat dissipation channel. In this embodiment, the heat-conducting glue layer 16 can adopt epoxy resin.

[0035] As Figure 3 and Figure 4 shown, a positioning plate 8 is detachably connected to one end of the heat-conducting tube 3 far away from the ventilation hole 5. The positioning plate 8 is arranged in a circular ring shape and is coaxially arranged with the heat-conducting tube 3. A plurality of heat dissipation fins 9 are connected to the bottom of the positioning plate 8. The plurality of heat dissipation fins 9 are arranged circumferentially along the positioning plate 8. The plurality of heat dissipation fins 9 are inserted into the heat-conducting tube and are arranged at intervals with the first heat dissipation holes 4, thus increasing the heat dissipation area of the inductor body 2.

[0036] On one side surface of a plurality of heat sinks 9, there are provided guide blocks 10. At the same time, a plurality of guide grooves 11 corresponding to the heat sinks 9 are circumferentially formed on the inner side wall of the heat conduction tube 3, and the guide grooves 11 are arranged along the length direction of the heat conduction tube 3 from the end of the heat conduction tube 3 far away from the ventilation hole 5. The guide blocks 10 are inserted into the guide grooves 11 and are in sliding fit with the guide grooves 11, whereby the heat sinks 9 are installed in the heat conduction tube 3. In addition, elastic clamping blocks 12 are circumferentially arranged at the end of the heat conduction tube 3 far away from the ventilation hole 5, and on one surface of the positioning plate 8 provided with the heat sink 9, there are formed clamping holes 13 corresponding to the elastic clamping blocks 12. The elastic clamping blocks 12 are in clamping fit with the clamping holes 13, whereby the positioning plate 8 is fixed on the heat conduction tube 3, and further the heat sink 9 is positioned in the heat conduction tube 3. In addition, a limiting plate 14 is circumferentially connected to the side surface of the positioning plate 8. In this embodiment, the number of the limiting plates 14 can be multiple. Thus, the inductor body 2 is not easily separated from the housing 1.

[0037] It should be noted that the following detailed description is exemplary and is intended to provide further illustration of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs.

[0038] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0039] In the present invention, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only relational terms determined for the convenience of describing the structural relationship of each component or element of the present invention and do not specifically refer to any component or element of the present invention. It cannot be understood as a limitation to the present invention.

[0040] In the present invention, terms such as "fixed connection", "connected", "connection", etc. should be understood in a broad sense, indicating that it can be a fixed connection, an integral connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate medium. For those related scientific research or technical personnel in the field, the specific meanings of the above terms in the present invention can be determined according to specific circumstances and cannot be understood as a limitation to the present invention.

[0041] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

[0042] Although the specific implementation manners of the present utility model have been described above in conjunction with the accompanying drawings, it is not a limitation on the protection scope of the present utility model. Those skilled in the art should understand that, based on the technical solution of the present utility model, various modifications or deformations that can be made by those skilled in the art without creative efforts are still within the protection scope of the present utility model.

Claims

1. A heat dissipation inductor, comprising a housing (1) and an inductor body (2), wherein the inductor body (2) is arranged in the housing (1), and characterized in that: The shell (1) is provided with ventilation holes at the bottom, the shell (1) is provided with a plurality of groups of heat-conducting convex strips (6), the plurality of groups of heat-conducting convex strips (6) are arranged along the circumference of the heat-conducting tube (3), an air-conducting channel (7) is arranged between two adjacent groups of heat-conducting convex strips (6), a heat-conducting tube (3) is arranged in the shell (1), the heat-conducting tube (3) is arranged coaxially with the ventilation holes (5), a plurality of the air-conducting channels (7) are arranged along the circumference of the heat-conducting tube (3), a plurality of first heat-dissipating holes (4) are arranged on the side wall of the heat-conducting tube (3), a second heat-dissipating hole (17) is arranged on the side wall of the shell (1), and the air-conducting channel (7) corresponds to and is connected with the first heat-dissipating hole (4) and the second heat-dissipating hole (17) one by one.

2. The heat dissipation inductor according to claim 1, characterized in that: The heat-conducting convex strip (6) comprises a first convex strip (601) and a second convex strip (602), wherein the first convex strip (601) is connected to the inner side wall of the shell (1), and the second convex strip (602) is connected to the inner bottom of the shell (1), and one end of the first convex strip (601) close to the inner bottom of the shell (1) is connected to one end of the second convex strip (602).

3. The heat dissipation inductor according to claim 1, characterized in that: A heat-conducting adhesive layer (16) is provided between each group of the heat-conducting convex strips (6).

4. The heat dissipation inductor according to claim 1, characterized in that: A positioning plate (8) is provided at one end of the heat conducting pipe (3) away from the ventilation hole (5); the positioning plate (8) is arranged in a circular ring shape and is coaxially arranged with the ventilation hole (5).

5. The heat dissipation inductor according to claim 4, characterized in that: A plurality of heat sinks (9) are provided on the positioning plate (8), and the plurality of heat sinks (9) are inserted into the heat conducting pipe (3).

6. The heat dissipation inductor according to claim 5, characterized in that: A guide block (10) is connected to one side of the heat sink (9); a guide groove (11) corresponding to the guide block (10) is provided on the inner side wall of the heat pipe (3); and the guide groove (11) is arranged along the height direction of the heat pipe (3) at one end close to the positioning plate (8); and the guide block (10) is slidably matched with the guide groove (11).

7. The heat dissipation inductor according to claim 4, characterized in that: An elastic clamping block (12) is provided at one end of the heat conducting pipe (3) away from the ventilation hole (5), and a clamping hole (13) corresponding to the elastic clamping block (12) is provided on the positioning plate (8), and the elastic clamping block (12) is clamped and matched with the clamping hole (13).

8. The heat dissipation inductor according to claim 1, characterized in that: The bottom of the housing (1) is provided with a ventilation slot (15), and the ventilation slot (15) is in communication with the ventilation hole (5).

9. The heat dissipation inductor according to claim 5, characterized in that: The plurality of first heat dissipation holes (4) and the plurality of heat dissipation fins (9) are arranged at intervals along the circumference of the heat conducting pipe (3).

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