Electric shock prevention power electronic radiator

Abstract

The invention discloses an anti-electric-shock power electronic radiator, which relates to the technical field of electronic heat dissipation and comprises a connecting frame, the bottom surface of the connecting frame is fixedly connected with an anti-creeping protective shell I, an anti-creeping protective shell II is arranged in the anti-creeping protective shell I, and a ceramic insulating layer is arranged between the anti-creeping protective shell I and the anti-creeping protective shell II. A sealing cover plate is placed on the upper surface of the connecting frame, the connecting frame and the sealing cover plate are connected through two connecting mechanisms, a heat conduction plate is fixedly embedded in the upper surface of the sealing cover plate, a set of cooling fins are installed on the upper surface of the heat conduction plate, and a self-cleaning mechanism is installed on the outer surface of the sealing cover plate. According to the radiator, the first anti-creeping protection shell, the second anti-creeping protection shell and the ceramic insulating layer can be used for carrying out anti-creeping protection on the power electronic device, the self-cleaning mechanism can be used for automatically cleaning dust on the radiating fins, and the radiating effect of the radiator on the power electronic device can be guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of electronic radiators, in particular to an electric shock-proof power electronic radiator. Background Art

[0002] Power electronic devices, also known as power semiconductor devices, are high-power electronic devices mainly used in power conversion and control circuits of power equipment. According to the degree to which power electronic devices can be controlled by control circuit signals, they can be divided into: semi-controlled devices, fully controlled devices and uncontrollable devices. Power electronic devices are developing in the direction of high power, high frequency and integration, and power electronic devices will generate a lot of heat. In order to dissipate the heat in time, a heat sink is generally installed for auxiliary heat dissipation to maintain the continuous operation of power electronic devices. Power electronic heat sinks are an indispensable component of power electronic equipment, and their performance directly affects the stability and service life of the equipment.

[0003] Power electronic heat sinks are usually in direct or indirect contact with high-voltage circuits or high-power circuits. If the heat sink is improperly designed or installed, or there are exposed metal parts or poor grounding, it may cause electric shock to users or maintenance personnel, resulting in serious personal injury or even life-threatening. Therefore, ensuring that the heat sink has anti-electric shock function and taking necessary insulation and grounding measures is the primary task of the heat sink. Electric shock may not only cause harm to personnel, but also damage the power electronic equipment itself. If the insulation between the heat sink and the circuit fails, the current may flow through the heat sink into other parts of the circuit, causing a short circuit, component damage or equipment failure.

[0004] However, the power electronic heat sinks in the prior art still have certain defects when in use. Most of the power electronic heat sinks in the prior art dissipate heat from the power electronic devices through heat conduction through the heat sink fins when in use. However, the heat sink fins will be contaminated with dust on their surfaces after being used for a period of time. The existing power electronic heat sinks are not convenient for automatically cleaning the dust on the heat sink fins, which will affect the heat dissipation effect of the heat sink. In addition, the current power electronic heat sinks do not have a strong anti-electric shock function, which is prone to electric shock hazards and affects personal safety. To this end, we provide an anti-electric shock power electronic heat sink to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to remedy the deficiencies of the prior art and provide a power electronic radiator that prevents electric shock.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electric shock-proof power electronic heat sink, comprising a connection frame, a leakage-proof protective shell 1 is fixedly connected to the bottom surface of the connection frame, a leakage-proof protective shell 2 is arranged inside the leakage-proof protective shell 1, a ceramic insulating layer is arranged between the leakage-proof protective shell 1 and the leakage-proof protective shell 2, a sealing cover plate is placed on the upper surface of the connection frame, the connection frame and the sealing cover plate are connected by two connecting mechanisms, a heat-conducting plate is fixedly inlaid on the upper surface of the sealing cover plate, a group of heat-dissipating fins are installed on the upper surface of the heat-conducting plate, and a heat-dissipating fin is installed on the outer surface of the sealing cover plate. There is a self-cleaning mechanism, which includes a support frame fixedly connected to the outer surface of the sealing cover plate, a motor fixedly embedded on the outer surface of the support frame, a reciprocating screw rod installed at the output end of the motor, a movable plate threadedly connected to the outer surface of the reciprocating screw rod, a cleaning scraper installed on the bottom surface of the movable plate, and the cleaning scraper is adapted to the heat dissipation fins, two thermally conductive silicone sheets are installed on the bottom surface of the sealing cover plate, an elastic bearing component is installed on the inner wall of the anti-leakage protection shell 2, an air inlet mechanism is installed on the right side surface of the anti-leakage protection shell 1, and two air outlet mechanisms are installed on the left side surface of the anti-leakage protection shell 1.

[0007] Furthermore, a slide groove is provided on the inner top wall of the support frame, a slider is slidably connected to the inner wall of the slide groove, and the slider is connected to the movable plate.

[0008] Furthermore, both left and right ends of the movable plate are slidably connected with guide rods, both ends of the two guide rods are installed with support bars, and the bottom end of each support bar is connected to the outer surface of the sealing cover plate.

[0009] Furthermore, the connection mechanism includes a connection plate 1 fixedly connected to the outer surface of the sealing cover plate and a connection plate 2 fixedly connected to the outer surface of the connection frame, and the connection plate 1 and the connection plate 2 are connected by a group of connection bolts.

[0010] Furthermore, the elastic bearing assembly includes a power electronic device bearing plate slidably connected to the inner wall of the second anti-leakage protection shell, two sets of springs are installed on the bottom surface of the power electronic device bearing plate, and the bottom ends of the springs are connected to the inner bottom wall of the second anti-leakage protection shell.

[0011] Furthermore, the air inlet mechanism includes an air inlet frame fixedly embedded in a left side of the anti-leakage protection shell, and a dustproof net is installed on the inner wall of the air inlet frame.

[0012] Furthermore, the air outlet mechanism includes an air outlet tube fixedly embedded in the right side of the connecting frame, a protective net is installed on the inner wall of the air outlet tube, and a fan is installed on the inner wall of the air outlet tube.

[0013] Compared with the prior art, the anti-electric shock power electronic radiator has the following beneficial effects: The present invention cooperates and arranges a connection frame, a first anti-leakage protection shell, a second anti-leakage protection shell, a ceramic insulating layer, a sealing cover plate, a connection mechanism, a heat conducting plate, a heat dissipation fin, a self-cleaning mechanism, a heat conducting silicone sheet, an elastic bearing component, an air inlet mechanism and an air outlet mechanism. The first anti-leakage protection shell, the second anti-leakage protection shell and the ceramic insulating layer are used to provide anti-leakage protection for power electronic devices. The self-cleaning mechanism can automatically clean dust on the heat dissipation fins, thereby ensuring the heat dissipation effect of the radiator on the power electronic devices.

[0014] The present invention places a power electronic device on the upper surface of the power electronic device carrier plate through the coordinated arrangement of the second anti-leakage protection shell, the sealing cover plate, the heat-conducting plate, the heat-conducting silicone sheet, the first connecting plate, the second connecting plate, the connecting bolts, the power electronic device carrier plate and the spring, connects the first connecting plate and the second connecting plate using the connecting bolts, and can be installed between the connecting frame and the sealing cover plate, so that the heat-conducting plate and the heat-conducting silicone sheet press the power electronic device downward and compress the spring, so that the power electronic device is installed inside the second anti-leakage protection shell for use, thereby providing safety protection for the power electronic device.

[0015] The present invention cooperates with the heat conduction plate, the heat dissipation fins, the support frame, the motor, the reciprocating screw, the movable plate, the cleaning scraper, the slide groove, the slider, the guide sleeve, the guide rod and the support bar. The motor can drive the reciprocating screw to rotate. The rotation of the reciprocating screw can make the movable plate reciprocate under the guidance of the slide groove and the slider, and can make the movable plate drive the cleaning scraper to reciprocate. The cleaning scraper can enter between two adjacent heat dissipation fins, so that the cleaning scraper can scrape off the dust contaminated on the outer surface of the heat dissipation fin, can facilitate the automatic cleaning of the dust contaminated on the outer surface of the heat dissipation fin, and can ensure the heat dissipation effect of the heat dissipation fins.

[0016] Through the coordinated arrangement of the anti-leakage protection shell 1, the anti-leakage protection shell 2, the sealing cover, the air inlet frame, the dustproof net, the air outlet tube, the protective net and the fan, the fan can blow out the air inside the anti-leakage protection shell 2 through the air outlet tube, and can allow the external air to enter the interior of the anti-leakage protection shell 2 through the air inlet frame, and can replace the air inside the anti-leakage protection shell 2, which can further improve the heat dissipation effect of the power electronic device and ensure that the power electronic device can perform normal high-power operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the right view of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of the left view of the present invention; Figure 3 This is a schematic diagram of the internal structure of the anti-leakage protection shell of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the sealing cover plate of the present invention; Figure 5 It is a schematic diagram of the internal structure of the air outlet tube of the present invention; Figure 6 It is a three-dimensional structural schematic diagram of the self-cleaning mechanism of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the support frame of the present invention.

[0018] In the figure: 1. connection frame; 2. anti-leakage protection shell 1; 3. anti-leakage protection shell 2; 4. ceramic insulation layer; 5. sealing cover plate; 6. connection mechanism; 601. connection plate 1; 602. connection plate 2; 603. connection bolt; 7. heat conduction plate; 8. heat dissipation fin; 9. self-cleaning mechanism; 901. support frame; 902. motor; 903. reciprocating screw rod; 904. moving plate; 905. cleaning scraper; 906. slide groove; 907. slider; 908. guide sleeve; 909. guide rod; 910. support bar; 10. thermal conductive silicone sheet; 11. elastic bearing component; 111. power electronic device bearing plate; 113. spring; 12. air outlet mechanism; 121. air outlet tube; 122. protective net; 123. fan; 13. air inlet mechanism; 131. air inlet frame; 132. dust net. DETAILED DESCRIPTION

[0019] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] Embodiment 1 like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a power electronic heat sink for preventing electric shock comprises a connection frame 1, a leakage protection shell 2 is fixedly connected to the bottom surface of the connection frame 1, a leakage protection shell 2 is arranged inside the leakage protection shell 2, a ceramic insulating layer 4 is arranged between the leakage protection shell 2 and the leakage protection shell 2, a sealing cover plate 5 is placed on the upper surface of the connection frame 1, the connection frame 1 and the sealing cover plate 5 are connected by two symmetrical connecting mechanisms 6, a heat conducting plate 7 is fixedly inlaid on the upper surface of the sealing cover plate 5, a group of heat dissipating fins 8 arranged at equal distances are installed on the upper surface of the heat conducting plate 7, a self-cleaning mechanism 9 is installed on the outer surface of the sealing cover plate 5, two symmetrical heat-conducting silicone sheets 10 are installed on the bottom surface of the sealing cover plate 5, an elastic bearing component 11 is installed on the inner wall of the leakage protection shell 2, an air inlet mechanism 13 is installed on the right side of the leakage protection shell 2, and two symmetrical air outlet mechanisms 12 are installed on the right side of the leakage protection shell 2.

[0022] In this embodiment, the upper surface of the anti-leakage protection shell 23 is connected to the bottom surface of the connecting frame 1, and an insulating coating is applied to the inner wall of the connecting frame 1 and the inner wall of the anti-leakage protection shell 23, which can further ensure the insulation of the device. A sealing ring is arranged between the connecting frame 1 and the sealing cover plate 5, which can ensure the sealing effect between the connecting frame 1 and the sealing cover plate 5. A mounting groove adapted to the heat conducting plate 7 is opened on the upper surface of the sealing cover plate 5, so that the heat conducting plate 7 can be installed inside the mounting groove for use. The heat inside the heat conducting plate 7 can be transferred to the heat dissipation fins 8. The heat dissipation fins 8 are used to increase the contact area with the air, which can facilitate the heat dissipation of the heat conducting plate 7. A sticky glue is arranged on the upper surface of the thermal conductive silicone sheet 10, so that the thermal conductive silicone sheet 10 is pasted on the bottom surface of the heat conducting plate 7 for use, which can transfer heat to the inside of the heat conducting plate 7.

[0023] The working steps of this embodiment are as follows: like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, when the radiator is in use, the power electronic device to be installed is placed inside the anti-leakage protection shell 2 3, so that the elastic bearing component 11 carries the power electronic device, and then the sealing cover plate 5 is covered on the upper surface of the connection frame 1, so that the thermal conductive silicone sheet 10 can contact the upper surface of the power electronic device, and then two connecting mechanisms 6 are used to connect the connection frame 1 and the sealing cover plate 5, so that the power electronic device can be conveniently installed inside the anti-leakage protection shell 2 3 for use, and the anti-leakage protection shell 1 2, the anti-leakage protection shell 2 3 and the ceramic insulating layer 4 are provided, so that the power electronic device inside the anti-leakage protection shell 2 3 can be safely protected to avoid the risk of electric shock. The heat generated by the power electronic device when it is working can be transferred to the inside of the heat conducting plate 7 through the heat conducting silicone sheet 10. The heat dissipation fins 8 are used to effectively dissipate the heat of the heat conducting plate 7, thereby dissipating the heat of the power electronic device. When the power electronic device generates a large amount of heat during high-power operation, the air outlet mechanism 12 is started. The air outlet mechanism 12 can discharge the air inside the anti-leakage protection shell 23, so that the external air can enter the inside of the anti-leakage protection shell 23 through the air inlet mechanism 13, and the air inside the anti-leakage protection shell 23 can be replaced, which can further improve the heat dissipation effect of the power electronic device and ensure that the power electronic device can perform normal high-power operation.

[0024] Embodiment 2 like Figure 1 , Figure 2 and Figure 3 As shown, the connection mechanism 6 includes a connection plate 1 601 fixedly connected to the outer surface of the sealing cover plate 5 and a connection plate 2 602 fixedly connected to the outer surface of the connection frame 1. The connection plate 1 601 and the connection plate 2 602 are connected by a group of connection bolts 603 arranged at equal distances.

[0025] The elastic bearing assembly 11 includes a power electronic device bearing plate 111 slidably connected to the inner wall of the anti-leakage protection shell 23, and two groups of springs 113 arranged at equal distances are installed on the bottom surface of the power electronic device bearing plate 111, and the bottom end of the spring 113 is connected to the inner bottom wall of the anti-leakage protection shell 23.

[0026] In this embodiment, a through hole compatible with the connecting bolt 603 is opened on the upper surface of the connecting plate 1 601, and a threaded hole compatible with the connecting bolt 603 is opened on the upper surface of the connecting plate 2 602, so that the connecting bolt 603 can be used to conveniently install the connecting plate 1 601 and the connecting plate 2 602, and a guide groove can be opened on the inner wall of the anti-leakage protection shell 2 3, so that the inner wall of the guide groove is slidably connected with a guide block, so that the guide block is connected to the power electronic device carrier plate 111, and the power electronic device carrier plate 111 can be guided and limited. The spring 113 is provided to provide elastic force to the power electronic device carrier plate 111.

[0027] The working steps of this embodiment are as follows: like Figure 1 , Figure 2 and Figure 3 As shown, when the power electronic device needs to be installed inside the anti-leakage protection shell 2 3 for use, the power electronic device is first placed inside the anti-leakage protection shell 2 3 so that the power electronic device carrier plate 111 carries the power electronic device, and then the sealing cover plate 5 is covered on the upper surface of the connection frame 1 so that the connection plate 1 601 corresponds to the connection plate 2 602, so that the connecting bolts 603 connect the connection plate 1 601 and the connection plate 2 602, which can facilitate the installation between the connection frame 1 and the sealing cover plate 5, enable the heat conducting plate 7 and the heat conducting silicone sheet 10 to press the power electronic device downward, and enable the power electronic device carrier plate 111 to compress the spring 113, so that the power electronic device is installed inside the anti-leakage protection shell 2 3 for use, and the power electronic device is safely protected.

[0028] Embodiment 3 like Figure 1 , Figure 2 , Figure 6 ,and Figure 7 As shown, the self-cleaning mechanism 9 includes a support frame 901 fixedly connected to the outer surface of the sealing cover plate 5, the outer surface of the support frame 901 is fixedly inlaid with a motor 902, the output end of the motor 902 is installed with a reciprocating screw 903, the outer surface of the reciprocating screw 903 is threadedly connected with a moving plate 904, the bottom surface of the moving plate 904 is installed with a cleaning scraper 905, and the cleaning scraper 905 is adapted to the heat dissipation fin 8, the inner top wall of the support frame 901 is provided with a slide groove 906, the inner wall of the slide groove 906 is slidably connected with a slider 907, and the slider 907 is connected to the moving plate 904, the outer surface of the moving plate 904 is fixedly inlaid with two symmetrical guide sleeves 908, the inner walls of the two guide sleeves 908 are slidably connected with guide rods 908, and support bars 909 are installed at both ends of the two guide rods 908, and the bottom end of each support bar 909 is connected to the outer surface of the sealing cover plate 5.

[0029] In this embodiment, two bearings are fixedly embedded in the inner wall of the support frame 901, so that the two ends of the reciprocating screw 903 can be connected to the inner rings of the two bearings respectively, which can ensure the rotation accuracy of the reciprocating screw 903. The output end of the motor 902 extends to the inner ring of the bearing and is connected to the reciprocating screw 903. The shape and size of the cleaning scraper 905 are the same as the spacing between two adjacent heat dissipation fins 8, so that the cleaning scraper 905 can just pass through the inside of the two heat dissipation fins 8, so that the outer surface of the cleaning scraper 905 is in contact with the inner ring of the two heat dissipation fins 8. The outer surfaces of two adjacent heat dissipation fins 8 are in contact with each other. When the movable plate 904 moves, the slider 907 can slide on the inner wall of the slide groove 906, so as to guide and limit the movable plate 904 and ensure the stability of the movable plate 904 when moving. When the movable plate 904 moves, the guide sleeve 908 embedded on the outer surface of the movable plate 904 can slide on the outer surface of the guide rod 908, so as to further guide and limit the movable plate 904 and ensure the stability of the movable plate 904 when moving.

[0030] The working steps of this embodiment are as follows: like Figure 1 , Figure 2 , Figure 6 ,and Figure 7 As shown, when the surface of the heat dissipation fin 8 is contaminated with dust after being used for a period of time, the motor 902 is started, and the rotation of the output end of the motor 902 can drive the reciprocating screw 903 to rotate. By utilizing the threaded cooperation between the reciprocating screw 903 and the movable plate 904, the rotation of the reciprocating screw 903 can enable the movable plate 904 to reciprocate under the guidance of the slide groove 906 and the slider 907, so that the movable plate 904 can drive the cleaning scraper 905 to reciprocate, and the cleaning scraper 905 can enter between two adjacent heat dissipation fins 8, so that the cleaning scraper 905 can scrape off the dust contaminated on the outer surface of the heat dissipation fin 8, which can facilitate the automatic cleaning of the dust contaminated on the outer surface of the heat dissipation fin 8, and can ensure the heat dissipation effect of the heat dissipation fin 8.

[0031] Embodiment 4 like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the air inlet mechanism 13 includes an air inlet frame 131 fixedly embedded in the left side of the leakage protection shell 2, and a dustproof net 132 is installed on the inner wall of the air inlet frame 131.

[0032] The air outlet mechanism 12 comprises an air outlet tube 121 fixedly embedded in the right side of the connecting frame 1 , a protective net 122 is installed on the inner wall of the air outlet tube 121 , and a fan 123 is installed on the inner wall of the air outlet tube 121 .

[0033] In this embodiment, the air inlet frame 131 and the air outlet cylinder 121 are both made of insulating material, and installation grooves compatible with the air inlet frame 131 are provided on the outer surface of the anti-leakage protection shell 1 2 and the outer surface of the anti-leakage protection shell 2 3, and installation grooves compatible with the air outlet cylinder 121 are provided on the outer surface of the anti-leakage protection shell 1 2 and the outer surface of the anti-leakage protection shell 2 3, which can facilitate the installation of the air inlet frame 131 and the air outlet cylinder 121, and can make the air inlet frame 131 and the air outlet cylinder 121 connected with the interior of the anti-leakage protection shell 2 3.

[0034] The working steps of this embodiment are as follows: like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, when the power electronic device generates a large amount of heat during high-power operation, the fan 123 inside the air outlet 121 is started. The fan 123 can blow out the air inside the anti-leakage protection shell 23 through the air outlet 121, so that the external air can enter the interior of the anti-leakage protection shell 23 through the air inlet frame 131, and the air inside the anti-leakage protection shell 23 can be replaced, which can further improve the heat dissipation effect of the power electronic device and ensure that the power electronic device can perform normal high-power operation. The dustproof net 132 is provided to filter the air entering the anti-leakage protection shell 23 to prevent dust in the air from entering the interior of the anti-leakage protection shell 23 and causing damage to the power electronic device installed inside the anti-leakage protection shell 23. The protective net 122 is provided to protect the fan 123 inside the air outlet 121 and prevent foreign objects from entering the interior of the air outlet 121 and causing damage to the fan 123.

[0035] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0036] It should be noted that the standard parts used in the present invention can all be purchased from the market, special-shaped parts can be customized according to the instructions and drawings, and the specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the inventor will not elaborate here.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A power electronic heat sink for preventing electric shock, comprising a connection frame (1), characterized in that: The bottom surface of the connection frame (1) is fixedly connected to an anti-leakage protection shell 1 (2), an anti-leakage protection shell 2 (3) is arranged inside the anti-leakage protection shell 1 (2), a ceramic insulating layer (4) is arranged between the anti-leakage protection shell 1 (2) and the anti-leakage protection shell 2 (3), a sealing cover plate (5) is placed on the upper surface of the connection frame (1), the connection frame (1) and the sealing cover plate (5) are connected via two connecting mechanisms (6), a heat conducting plate (7) is fixedly embedded on the upper surface of the sealing cover plate (5), a group of heat dissipation fins (8) are installed on the upper surface of the heat conducting plate (7), and a self-cleaning mechanism (9) is installed on the outer surface of the sealing cover plate (5), the self-cleaning mechanism (9) comprises a heat conducting plate (7) fixedly connected to the outer surface of the sealing cover plate (5). A support frame (901) is provided, wherein a motor (902) is fixedly embedded on the outer surface of the support frame (901), a reciprocating screw rod (903) is installed on the output end of the motor (902), a movable plate (904) is threadedly connected to the outer surface of the reciprocating screw rod (903), a cleaning scraper (905) is installed on the bottom surface of the movable plate (904), and the cleaning scraper (905) is compatible with the heat dissipation fins (8), two heat-conducting silicone sheets (10) are installed on the bottom surface of the sealing cover plate (5), an elastic bearing component (11) is installed on the inner wall of the second leakage protection shell (3), an air inlet mechanism (13) is installed on the right side surface of the first leakage protection shell (2), and two air outlet mechanisms (12) are installed on the left side surface of the first leakage protection shell (2).

2. The power electronic heat sink for preventing electric shock according to claim 1, characterized in that: The inner top wall of the support frame (901) is provided with a slide groove (906), the inner wall of the slide groove (906) is slidably connected with a slider (907), and the slider (907) is connected to the movable plate (904).

3. The power electronic heat sink for preventing electric shock according to claim 1, characterized in that: The left and right ends of the movable plate (904) are slidably connected to guide rods (908), and support bars (909) are installed at both ends of the two guide rods (908), and the bottom end of each support bar (909) is connected to the outer surface of the sealing cover plate (5).

4. The power electronic heat sink for preventing electric shock according to claim 1, characterized in that: The connection mechanism (6) comprises a first connection plate (601) fixedly connected to the outer surface of the sealing cover plate (5) and a second connection plate (602) fixedly connected to the outer surface of the connection frame (1), wherein the first connection plate (601) and the second connection plate (602) are connected via a set of connection bolts (603).

5. The power electronic heat sink for preventing electric shock according to claim 1, characterized in that: The elastic bearing assembly (11) comprises a power electronic device bearing plate (111) slidably connected to the inner wall of the second anti-leakage protection shell (3); two groups of springs (113) are installed on the bottom surface of the power electronic device bearing plate (111), and the bottom ends of the springs (113) are connected to the inner bottom wall of the second anti-leakage protection shell (3).

6. The power electronic heat sink for preventing electric shock according to claim 1, characterized in that: The air inlet mechanism (13) comprises an air inlet frame (131) fixedly embedded in the left side of the leakage protection shell (2), and a dustproof net (132) is installed on the inner wall of the air inlet frame (131).

7. The power electronic heat sink for preventing electric shock according to claim 1, characterized in that: The air outlet mechanism (12) comprises an air outlet tube (121) fixedly embedded in the right side of the connection frame (1), a protective net (122) being installed on the inner wall of the air outlet tube (121), and a fan (123) being installed on the inner wall of the air outlet tube (121).

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