A IGBT power tube fixing structure

Abstract

The utility model provides an IGBT power tube fixing structure, which relates to the technical field of induction cooker accessories, including a radiator, an IGBT power tube is installed on the lower surface of the radiator through a fixing component, the lower surface of the radiator is provided with a recessed structure, a heat-conducting insulating fixing plate is embedded in the recessed structure, and the IGBT power tube is installed on the upper side of the heat-conducting insulating fixing plate through the fixing component. The utility model is beneficial in that a recessed structure is provided on the lower surface of the radiator, the heat-conducting insulating fixing plate is embedded in the recessed structure, and the IGBT power tube is installed on the upper side of the heat-conducting insulating fixing plate through the fixing component, and the position of the heat-conducting insulating fixing plate on the lower surface of the radiator is fixed, so that the heat-conducting insulating fixing plate is not easy to move, and the connection between the IGBT power tube and the lower surface of the radiator is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic oven accessories, in particular to an IGBT power tube fixing structure. Background Art

[0002] When the induction cooker is working, due to its high power and its own working characteristics, the internal power devices generate a lot of heat when working. This requires the addition of a heat dissipation device to effectively dissipate the heat generated by the internal power devices to ensure that the induction cooker can work long-term and continuously.

[0003] At present, the common heat dissipation method of induction cookers is: the IGBT power tube and the bridge stack are tightly attached to a radiator, the radiator stores heat, and a fan is used to force air to the radiator, generating air flow in and around the radiator, continuously taking away the heat stored in the power device by the radiator, thereby ensuring that the power device works within a certain temperature range for a long time.

[0004] During installation, a thermal insulation plate is installed on the lower side of the IGBT power tube. However, the IGBT power tube is relatively small and is mostly installed by snap-on installation. During use, the lower thermal insulation plate is very easy to be displaced, which is not very convenient to use. Utility Model Content

[0005] The utility model overcomes the shortcomings of the prior art and provides an IGBT power tube fixing structure.

[0006] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0007] An IGBT power tube fixing structure comprises a heat sink, an IGBT power tube is mounted on the lower surface of the heat sink via a fixing assembly, a recessed structure is provided on the lower surface of the heat sink, a heat-conducting insulating fixing plate is embedded in the recessed structure, and the IGBT power tube is mounted on the upper side of the heat-conducting insulating fixing plate via the fixing assembly.

[0008] Preferably, the recessed structure comprises a recessed groove, the recessed groove has the same shape as the heat-conducting insulating fixing plate, and the heat-conducting insulating fixing plate is embedded in the recessed groove.

[0009] Preferably, the height of the recessed groove is smaller than the thickness of the thermally conductive insulating fixing plate.

[0010] Preferably, an introduction groove is provided at the edge of the recessed groove.

[0011] Preferably, the lower bottom surface of the introduction groove is set to be a curved surface.

[0012] Preferably, the fixing assembly includes a fixing plate and a screw fixing part, the screw fixing part is arranged on one side of the recessed groove, and one side of the fixing plate is installed on the upper side of the IGBT power tube through the screw fixing part to fix the position of the IGBT power tube.

[0013] Preferably, the fixing plate includes a connecting plate and an L-shaped fixing plate, the connecting plate is installed on the lower surface of the radiator through the screw fixing part, one end of the connecting plate is connected to one end of the L-shaped fixing plate, and the L-shaped fixing plate is arranged on one side of the IGBT power tube and fixes the position of the IGBT power tube.

[0014] Preferably, the thermally conductive insulating fixing sheet is a thermally conductive insulating ceramic sheet.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] An IGBT power tube fixing structure is provided, by arranging a recessed structure on the lower surface of a heat sink, embedding a heat conductive insulating fixing sheet into the recessed structure, and then installing the IGBT power tube on the upper side of the heat conductive insulating fixing sheet through a fixing component, fixing the position of the heat conductive insulating fixing sheet on the lower surface of the heat sink, making the heat conductive insulating fixing sheet difficult to move, and making the connection between the IGBT power tube and the lower surface of the heat sink more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the first structure of the bottom installation of the radiator described in the utility model;

[0019] Figure 2 This is a second structural schematic diagram of the bottom installation of the radiator described in the utility model;

[0020] Figure 3 It is a third structural schematic diagram of the bottom installation of the radiator described in the utility model;

[0021] Figure 4 It is a structural schematic diagram of the bottom of the radiator of the utility model;

[0022] In the figure: 1-heat sink; 2-fixing assembly; 3-IGBT power tube; 4-recessed structure; 5-thermal conductive insulating fixing plate; 6-recessed groove; 7-introduction groove; 8-fixing plate; 9-screw fixing piece; 10-connecting plate; 11-L-shaped fixing plate. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0024] like Figures 1 to 3 As shown, the figure is the first implementation case of the utility model, an IGBT power tube fixing structure, including a heat sink 1, an IGBT power tube 3 is installed on the lower surface of the heat sink 1 through a fixing component 2, a recessed structure 4 is provided on the lower surface of the heat sink 1, a thermally conductive insulating fixing plate 5 is embedded in the recessed structure 4, the IGBT power tube 3 is installed on the upper side of the thermally conductive insulating fixing plate 5 through the fixing component 2, and the thermally conductive insulating fixing plate 5 can be a thermally conductive insulating ceramic plate.

[0025] Specifically, the fixing assembly 2 includes a fixing plate 8 and a screw fixing member 9, the screw fixing member 9 is arranged on one side of the recessed groove 6, one side of the fixing plate 8 is installed on the upper side of the IGBT power tube 3 through the screw fixing member 9 and fixes the position of the IGBT power tube 3, and the fixing plate 8 includes a connecting plate 10 and an L-shaped fixing plate 11, the connecting plate 10 is installed on the lower surface of the radiator 1 through the screw fixing member 9, one end of the connecting plate 10 is connected to one end of the L-shaped fixing plate 11, and the L-shaped fixing plate 11 is arranged on one side of the IGBT power tube 3 and fixes the position of the IGBT power tube 3.

[0026] like Figure 1 As shown, the recessed structure 4 includes a recessed groove 6 , which has the same shape as the heat-conducting insulating fixing sheet 5 and the heat-conducting insulating fixing sheet 5 is embedded in the recessed groove 6 .

[0027] Furthermore, the height of the concave groove 6 is smaller than the thickness of the heat-conducting insulating fixing plate 5 , so that the heat-conducting insulating fixing plate 5 can raise the upper IGBT power tube 3 , making the installation more reasonable.

[0028] Preferably, an introduction groove 7 is provided at the edge of the recessed groove 6, so as to facilitate taking out the heat-conducting insulating fixing sheet 5 from the recessed groove 6 at the introduction groove 7. Figure 1 and Figure 4 As shown, the recessed groove 6 and the heat-conducting insulating fixing plate 5 are both quadrilateral structures, and the introduction groove 7 is set as a circular structure. The circular introduction grooves 7 set at the four corners of the introduction groove 7 make it easy to take out the heat-conducting insulating fixing plate 5 from the four corners of the recessed groove 6, making disassembly and replacement more convenient.

[0029] Furthermore, Figure 2 and Figure 3 As shown, the bottom surface of the introduction groove 7 is set as a gradually downward arc surface, and the guidance of the arc surface structure makes it easier to take out the thermally conductive insulating fixing sheet 5 from the recessed groove 6 at the introduction groove 7.

[0030] The utility model sets a recessed structure 4 on the lower surface of the radiator 1, embeds the heat-conducting insulating fixing sheet 5 into the recessed structure 4, and then installs the IGBT power tube 3 on the upper side of the heat-conducting insulating fixing sheet 5 through the fixing component 2, fixes the position of the heat-conducting insulating fixing sheet 5 on the lower surface of the radiator 1, makes the heat-conducting insulating fixing sheet 5 not easy to move, makes the connection between the IGBT power tube 3 and the lower surface of the radiator 1 more stable, has a simple structure, and is more convenient to use.

[0031] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An IGBT power tube fixing structure, characterized in that: The invention comprises a heat sink (1), an IGBT power tube (3) being mounted on the lower surface of the heat sink (1) via a fixing assembly (2), a recessed structure (4) being provided on the lower surface of the heat sink (1), a heat-conducting insulating fixing sheet (5) being embedded in the recessed structure (4), and the IGBT power tube (3) being mounted on the upper side of the heat-conducting insulating fixing sheet (5) via the fixing assembly (2).

2. The IGBT power tube fixing structure according to claim 1, characterized in that: The recessed structure (4) comprises a recessed groove (6), the recessed groove (6) having the same shape as the heat-conducting insulating fixing sheet (5), and the heat-conducting insulating fixing sheet (5) is embedded in the recessed groove (6).

3. The IGBT power tube fixing structure according to claim 2, characterized in that: The height of the recessed groove (6) is smaller than the thickness of the heat-conducting insulating fixing plate (5).

4. The IGBT power tube fixing structure according to claim 3, characterized in that: An introduction groove (7) is provided on the edge of the recessed groove (6).

5. The IGBT power tube fixing structure according to claim 4, characterized in that: The lower bottom surface of the introduction groove (7) is configured as a curved surface.

6. The IGBT power tube fixing structure according to claim 2, characterized in that: The fixing assembly (2) comprises a fixing plate (8) and a screw fixing member (9), wherein the screw fixing member (9) is arranged on one side of the recessed groove (6), and one side of the fixing plate (8) is installed on the upper side of the IGBT power tube (3) through the screw fixing member (9) to fix the position of the IGBT power tube (3).

7. The IGBT power tube fixing structure according to claim 6, characterized in that: The fixing plate (8) comprises a connecting plate (10) and an L-shaped fixing plate (11); the connecting plate (10) is mounted on the lower surface of the heat sink (1) via the screw fixing member (9); one end of the connecting plate (10) is connected to one end of the L-shaped fixing plate (11); the L-shaped fixing plate (11) is arranged on one side of the IGBT power tube (3) and fixes the position of the IGBT power tube (3).

8. The IGBT power tube fixing structure according to claim 2, characterized in that: The heat-conducting insulating fixing sheet (5) is a heat-conducting insulating ceramic sheet.

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