Inverter with protection structure

Abstract

The invention relates to the technical field of inverters, in particular to an inverter with a protection structure, which comprises an inverter main body and a plurality of heat dissipation holes formed in the inverter main body, and further comprises a rectangular plate which is of a rectangular structure, is arranged on the inverter main body in a sliding manner and is provided with rectangular holes corresponding to the heat dissipation holes, the heat dissipation holes can be selectively blocked by moving the rectangular plate; according to the device, the temperature inside the inverter main body is monitored in real time through the temperature sensing control assembly, once the temperature is abnormally increased, the rectangular plate can move to expand the heat dissipation holes to improve the heat dissipation effect, and when the temperature is still increased, the heat dissipation holes can be quickly blocked to prevent heat from overflowing and external oxygen from entering, so that the fire risk is reduced; and meanwhile, through synchronous work of the air exhaust assembly and the air inflation assembly, air in the inverter main body can be rapidly extracted after the heat dissipation holes are blocked, and inert gas is filled, so that the combustion reaction is further inhibited, and the safety of the inverter main body and the surrounding environment thereof is protected.

Description

Technical Field

[0001] The present invention relates to the technical field of inverters, and specifically to an inverter with a built-in protection structure. Background Art

[0002] An inverter, also known as a converter or a current reverser, is a converter that converts direct current electrical energy (usually from a battery or a storage battery) into alternating current with a fixed frequency and voltage or a variable frequency and voltage. Existing inverters generate heat during daily operation. Therefore, to avoid heat accumulation from damaging the internal electronic devices of the inverter, existing inverters are equipped with heat dissipation structures. The design of the heat dissipation structure is mainly divided into two categories: active heat dissipation and passive heat dissipation. The active heat dissipation system is usually equipped with a cooling fan. By rotating the fan, an air flow is generated to accelerate the dissipation of heat inside the inverter. This heat dissipation method has high efficiency and fast heat dissipation speed, and is especially suitable for inverters with high requirements for heat dissipation performance. Passive heat dissipation mainly relies on the heat dissipation holes opened on the inverter housing, and exports heat from the inside of the inverter through natural convection. Although the heat dissipation efficiency of passive heat dissipation is relatively low, its structure is simple, easy to maintain, and does not require additional energy consumption. Therefore, it has been widely used in some occasions with low requirements for heat dissipation performance;

[0003] However, whether it is active heat dissipation or passive heat dissipation, when the existing heat dissipation structures face a sudden increase in the heat of the inverter, especially when the temperature rises sharply or even catches fire due to abnormal conditions such as short circuits and overloads, their heat dissipation effects often seem inadequate. In extreme cases, the cooling fan in the active heat dissipation system not only fails to effectively relieve the sharp increase in heat, but instead, due to its good ventilation, provides sufficient oxygen for combustion, thus exacerbating the spread of the fire. Similarly, the heat dissipation holes in the passive heat dissipation structure may also become channels for the spread of combustion at this time, further expanding the risk of fire. For this reason, we propose an inverter with a built-in protection structure. Summary of the Invention

[0004] To solve the above technical problems, an embodiment of the present application provides an inverter with a built-in protection structure, including an inverter main body and a plurality of heat dissipation holes opened on the inverter main body, and further including:

[0005] A rectangular plate, which is of a rectangular structure, is slidably arranged on the inverter main body, and is provided with rectangular holes corresponding to the heat dissipation holes. By moving the rectangular plate, the heat dissipation holes can be selectively blocked;

[0006] A temperature sensing control component, which is installed on the inverter main body and is drivingly connected to the rectangular plate, is used to monitor the temperature inside the inverter main body in real time, and control the movement of the rectangular plate according to the temperature change;

[0007] An air extraction component is arranged on the inverter main body and is in communication with the internal space of the inverter main body. It is started after the rectangular plate completely blocks the heat dissipation holes and is used to extract the air inside the inverter main body;

[0008] An inflation component is also arranged on the inverter main body and is in communication with the internal space of the inverter main body. It is started when the air extraction device is working and is used to fill the inverter main body with inert gas.

[0009] In some embodiments, the temperature sensing control component includes a hollow tank fixedly connected inside the inverter main body. The hollow tank is filled with inert gas, and a first piston is slidably connected inside the hollow tank. A tension spring is fixedly connected between the first piston and the hollow tank, and one end of the first piston is fixedly connected with a pull rod. One end of the pull rod slidably passes through the hollow tank;

[0010] And a slide rod is fixedly connected to one end of the rectangular plate. One end of the slide rod slidably passes through the inverter main body and is fixedly connected with a cylinder. One end of the pull rod is fixedly connected with a connecting rod. One end of the connecting rod is fixedly connected with a sliding plate. A guide groove member is formed on the sliding plate. One end of the cylinder is located inside the guide groove member and is used to drive the rectangular plate to move when the inert gas expands and pushes the first piston and the pull rod to move.

[0011] In some embodiments, the guide groove member includes an inclined sliding groove one formed on the sliding plate. One end of the cylinder is located inside the inclined sliding groove one and is slidably connected with its inner wall, and is used to drive the rectangular plate to move and expand the heat dissipation holes when the pull rod moves;

[0012] And an inclined sliding groove two communicated with the inclined sliding groove one is formed on the sliding plate, and is used to drive the rectangular plate to move and close the heat dissipation holes when the pull rod moves;

[0013] And a straight sliding groove one communicated with the inclined sliding groove two is formed on the sliding plate, and is used to keep the rectangular plate stable when the pull rod moves.

[0014] In some embodiments, the air extraction component includes a syringe fixedly connected to the inverter main body. An air outlet pipe and an air inlet pipe are conductively connected to the syringe. One end of the air outlet pipe is located inside the inverter main body. Check valves are installed in both the air outlet pipe and the air inlet pipe. A second piston is slidably connected inside the syringe. A driving member is arranged on the inverter and is used to drive the second piston to move to extract the air inside the inverter.

[0015] In some embodiments, the driving member includes a push rod fixedly connected to one end of the second piston. One end of the push rod slidably passes through the syringe and is fixedly connected with a hollow rectangular frame. A first shaft is rotatably connected to the inverter main body. A first gear disk is fixedly connected to the first shaft. A second shaft with one end located inside the hollow rectangular frame is rotatably connected to the first gear disk and is used to drive the second piston to move when the first gear disk rotates;

[0016] And a shaft three is rotatably connected to the inverter main body. A gear disk two that meshes with the gear disk one is fixedly connected to the shaft three. An installation bracket is fixedly connected to the inverter main body. One end of the shaft three passes through the installation bracket and is fixedly connected to a disc spring. A circular shell is arranged on the installation bracket, and one end of the disc spring is fixed to the inner wall of the circular shell;

[0017] And a valve member connected to the piston one is arranged on the intake pipe for blocking the intake pipe. The circular shell is rotatably connected to the shaft three. A screw rod is arranged on the installation bracket for locking the rotated circular shell and the disc spring, and the valve member is opened after the piston one moves a certain distance.

[0018] In some embodiments, the valve member includes a hollow pipe conductively connected to one end of the intake pipe. A connecting pipe is conductively connected to the hollow pipe. A plugging column one is slidably connected in the connecting pipe. A round hole one is opened on the plugging column one. And a spring one is fixedly connected between the plugging column one and the inner wall of the connecting pipe;

[0019] And an exhaust pipe is fixedly connected to one end of the piston one. The exhaust pipe is conductively connected to the inner cavity of the hollow pipe. A rectangular block is fixedly connected to one side of the exhaust pipe. And the rectangular block adopts a stepped design. A push rod that contacts and abuts against the rectangular block is fixedly connected to one end of the plugging column one.

[0020] In some embodiments, the inflation assembly includes a guide groove opened on the rectangular block. A plugging column two is slidably connected in the guide groove. The plugging column two is slidably connected to the inner wall of the exhaust pipe. And a round hole two is opened on the plugging column two. A spring two is fixedly connected between the plugging column two and the inner wall of the exhaust pipe for driving the plugging column two to move after the piston one moves, so that the round hole two conducts the exhaust pipe when the push rod is inserted into the guide groove.

[0021] In some embodiments, the stepped part of the rectangular block adopts a bevel design.

[0022] In some embodiments, the gear disk two is designed with a diameter larger than that of the gear disk one.

[0023] In some embodiments, a plurality of heat conducting fins are fixedly connected to the hollow tank at equal intervals and uniformly.

[0024] The present invention has at least the following beneficial effects:

[0025] 1. The device of the present invention monitors the temperature inside the inverter main body in real time through the temperature sensing control component. Once the temperature rises abnormally, the rectangular plate can first move to expand the heat dissipation holes to improve the heat dissipation effect. When the temperature is still rising, the heat dissipation holes can be quickly blocked to prevent heat from escaping and external oxygen from entering, thereby reducing the fire risk.

[0026] 2. Through the synchronous operation of the air extraction component and the gas filling component, this device can quickly extract the air inside the inverter main body and fill it with inert gas after blocking the heat dissipation holes, further suppressing the combustion reaction and protecting the safety of the inverter main body and its surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0028] Figure 2 For the present invention Figure 1 Schematic diagram of the structure from another perspective;

[0029] Figure 3 For the present invention Figure 1 Schematic diagram of the sectional structure;

[0030] Figure 4 For the present invention Figure 3 Schematic diagram of the sectional structure; [[ID=X]]

[0031] Figure 5 For the present invention Figure 4 Schematic diagram of the sectional structure;

[0032] Figure 6 For the present invention Figure 5 Schematic diagram of the structure of Area A in the present invention;

[0033] Figure 7 For the present invention Figure 5 Schematic diagram of the sectional structure;

[0034] Figure 8 For the present invention Figure 7 Schematic diagram of the sectional structure;

[0035] Figure 9 For the present invention Figure 8 Schematic diagram of the sectional structure;

[0036] Figure 10 It is a schematic diagram of the structure of Embodiment 2 of the present invention.

[0037] In the figure: 1 - Inverter main body; 11 - Heat dissipation holes; 2 - Rectangular plate; 3 - Rectangular hole; 4 - Temperature sensing control component; 5 - Air extraction component; 6 - Gas filling component; 41 - Hollow tank; 42 - First piston; 43 - Tension spring; 44 - Pull rod; 45 - Slide bar; 46 - Cylinder; 47 - Connecting rod; 48 - Slide plate; 49 - Guide groove component; 51 - First inclined chute; 52 - Second inclined chute; 53 - First straight chute; 54 - Syringe; 55 - Outlet pipe; 56 - Inlet pipe; 57 - Check valve; 58 - Second piston; 59 - Driving component; 61 - Push rod; 62 - Hollow rectangular frame; 63 - First shaft; 64 - First gear disk; 65 - Second shaft; 66 - Third shaft; 67 - Second gear disk; 68 - Mounting bracket; 69 - Disk spring; 71 - Circular shell; 72 - Valve component; 73 - Screw; 7,4 - Hollow pipe; 75 - Connecting pipe; 76 - First plugging column; 77 - First round hole; 78 - First spring; 79 - Air release pipe; 81 - Rectangular block; 82 - Ejector rod; 83 - Guide groove; 84 - Second plugging column; 85 - Second round hole; 86 - Second spring; 87 - Heat conducting sheet. Detailed implementation manners

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0039] Embodiment 1: Please refer to Figures 1-9 , the present invention provides a technical solution: An inverter with a built-in protection structure includes an inverter main body 1 and a plurality of heat dissipation holes 11 opened on the inverter main body 1, and further includes:

[0040] A rectangular plate 2, which has a rectangular structure, is slidably arranged on the inverter main body 1, and is provided with a rectangular hole 3 corresponding to the heat dissipation hole 11. The heat dissipation hole 11 can be selectively blocked by moving the rectangular plate 2;

[0041] A temperature sensing control component 4, which is installed on the inverter main body 1 and is drivingly connected to the rectangular plate 2, is used for real-time monitoring of the temperature inside the inverter main body 1 and controlling the movement of the rectangular plate 2 according to the temperature change;

[0042] An air extraction component 5, which is arranged on the inverter main body 1 and is communicated with the internal space of the inverter main body 1, is started after the rectangular plate 2 completely blocks the heat dissipation hole 11, and is used for extracting the air inside the inverter main body 1;

[0043] A gas filling component 6, which is also arranged on the inverter main body 1 and is communicated with the internal space of the inverter main body 1, is started when the air extraction device works, and is used for filling inert gas into the inverter main body 1;

[0044] This device monitors the temperature inside the inverter main body 1 in real time through the temperature-sensing control component 4. Once the temperature rises abnormally, the rectangular plate 2 can first move to expand the heat dissipation holes 11 to improve the heat dissipation effect. When the temperature continues to rise, it can quickly block the heat dissipation holes 11 to prevent heat from escaping and external oxygen from entering, thereby reducing the fire risk;

[0045] At the same time, the synchronous operation of the air extraction component 5 and the gas filling component 6 can quickly extract the air inside the inverter main body 1 and fill it with inert gas after blocking the heat dissipation holes 11, further suppressing the combustion reaction and protecting the safety of the inverter main body 1 and its surrounding environment.

[0046] The temperature-sensing control component 4 includes a hollow tank 41 fixedly connected inside the inverter main body 1. The hollow tank 41 is filled with inert gas, and a first piston 42 is slidably connected inside the hollow tank 41. A tension spring 43 is fixedly connected between the first piston 42 and the hollow tank 41, and one end of the first piston 42 is fixedly connected to a pull rod 44. One end of the pull rod 44 slidably passes through the hollow tank 41. In the initial state of this device, a large amount of inert gas has been filled inside the hollow tank 41 and maintained in a high-pressure state through the tension spring 43. Then, when the temperature inside the inverter main body 1 rises, the inert gas will expand due to heat, further stretching the tension spring 43 while driving the first piston 42 to move;

[0047] And a sliding rod 45 is fixedly connected to one end of the rectangular plate 2. One end of the sliding rod 45 slidably passes through the inverter main body 1 and is fixedly connected to a cylinder 46. One end of the pull rod 44 is fixedly connected to a connecting rod 47. One end of the connecting rod 47 is fixedly connected to a sliding plate 48. A guiding groove member 49 is provided on the sliding plate 48. One end of the cylinder 46 is located inside the guiding groove member 49, and is used to drive the rectangular plate 2 to move when the inert gas expands and pushes the first piston 42 and the pull rod 44 to move.

[0048] The guiding groove member 49 includes an inclined sliding groove one 51 opened on the sliding plate 48. One end of the cylinder 46 is located inside the inclined sliding groove one 51 and slidably connected to its inner wall, and is used to drive the rectangular plate 2 to move and expand the heat dissipation holes 11 when the pull rod 44 moves;

[0049] And an inclined sliding groove two 52 communicated with the inclined sliding groove one 51 is opened on the sliding plate 48, and is used to drive the rectangular plate 2 to move and close the heat dissipation holes 11 when the pull rod 44 moves;

[0050] And a straight sliding groove one 53 communicated with the inclined sliding groove two 52 is opened on the sliding plate 48, and is used to keep the rectangular plate 2 stable when the pull rod 44 moves;

[0051] When the temperature inside the inverter main body 1 rises, the inert gas will expand due to heat, further stretching the tension spring 43 and driving the first piston 42 to move. Then, it drives the pull rod 44 and the connecting rod 47 to move, thereby driving the sliding plate 48 to move. Then, it uses the first inclined chute 51 to push the cylinder 46 to move, driving the rectangular plate 2 to move and expand the heat dissipation holes 11. Subsequently, if the temperature continues to rise, the inert gas continues to expand, driving the sliding plate 48 to move. Then, it uses the second inclined chute 52 to push the cylinder 46 to move, driving the rectangular plate 2 to move and block the heat dissipation holes 11, preventing heat from escaping and external oxygen from entering, thereby reducing the fire risk. Subsequently, if the temperature does not drop, the inert gas continues to expand, driving the sliding plate 48 and the rectangular block 81 to continue moving, causing the ejector rod 82 to disengage from the block. Then, it moves under the restoring elastic force of the first spring 78, driving the first plugging column 76 to move, making the second circular hole 85 conduct the air inlet pipe 56. Then, it uses the reset of the disc spring 69 to drive the third shaft 66, the second gear disc 67, and the first gear disc 64 to rotate synchronously, driving the second shaft 65 to rotate, driving the hollow rectangular frame 62, the push rod 61, and the second piston 58 to perform reciprocating motions, continuously extracting the air inside the inverter main body 1.

[0052] The air extraction assembly 5 includes a syringe barrel 54 fixedly connected to the inverter main body 1. An air outlet pipe 55 and an air inlet pipe 56 are conductively connected to the syringe barrel 54. One end of the air outlet pipe 55 is inside the inverter main body 1. Check valves 57 are installed in both the air outlet pipe 55 and the air inlet pipe 56. The check valve in the air inlet pipe 56 only allows air to enter the syringe barrel 54, and the check valve in the air outlet pipe only allows air to flow out of the syringe barrel 54. A second piston 58 is slidably connected inside the syringe barrel 54. A driving member 59 is provided on the inverter, used to drive the second piston 58 to move to extract the air inside the inverter. Subsequently, when the temperature has not dropped yet, the first piston 42 moves further, driving the ejector rod 82 to insert into the guide groove 83, then driving the second plugging column 84 to move, driving the second circular hole 85 to conduct the exhaust pipe 79 while locking the exhaust pipe 79, thereby releasing the inert gas inside the hollow tank 4 to further inhibit the combustion reaction and protect the safety of the inverter and its surrounding environment.

[0053] The driving member 59 includes a push rod 61 fixedly connected to one end of the second piston 58. One end of the push rod 61 slidably passes through the syringe barrel 54 and is fixedly connected to a hollow rectangular frame 62. A first shaft 63 is rotatably connected to the inverter main body 1 through a bearing. A first gear disc 64 is fixedly connected to the first shaft 63. A second shaft 65 with one end located inside the hollow rectangular frame 62 is rotatably connected to the first gear disc 64 through a bearing. The second shaft 65 is slidably connected to the inner wall of the hollow rectangular frame 62, used to drive the second piston 58 to move when rotating the first gear disc 64;

[0054] A third shaft 66 is rotatably connected to the inverter body 1 via a bearing. A second gear disc 67 is fixedly connected to the third shaft 66 and engages with the first gear disc 64. A mounting bracket 68 is fixedly connected to the inverter body 1. One end of the third shaft 66 passes through the mounting bracket 68 and is fixedly connected to a coil spring 69. The third shaft 66 is rotatably connected to the mounting bracket 68. A circular housing 71 is rotatably connected to the mounting bracket 68. One end of the coil spring 69 is fixedly connected to the inner wall of the circular housing 71.

[0055] A valve member 72 connected to piston 1 42 is provided on the intake pipe 56 for blocking the intake pipe 56. The circular shell 71 is rotatably connected to shaft 3 66. A screw 73 is threadedly connected to the mounting frame 68 for locking the rotated circular shell 71 and the coil spring 69. After the piston 1 42 moves a certain distance, the valve member 72 is opened. The staff can accumulate force to rewind the coil spring 69 by rotating the circular shell 71, and then lock the circular shell 71 by rotating the screw 73 to complete the preparation work.

[0056] The valve member 72 includes a hollow tube 74 that is conductively connected to one end of the air inlet pipe 56. The hollow tube 74 is conductively connected to a connecting pipe 75. A blocking post 76 is slidably connected to the connecting pipe 75. The blocking post has a circular hole 77 formed therein. A spring 78 is fixedly connected between the blocking post 76 and the connecting pipe 75. When the device is in normal operation, the spring 78 is compressed, and the blocking post 76 also blocks the air inlet pipe 56. The push rod 82 also contacts and abuts against the rectangular block 81.

[0057] A vent pipe 79 is fixedly connected to one end of the piston 42, and the vent pipe 79 is connected to the inner cavity of the hollow tube 74. A rectangular block 81 is fixedly connected to one side of the vent pipe 79, and the rectangular block 81 adopts a stepped design. A push rod 82 is fixedly connected to one end of the blocking column 76, which contacts and abuts the rectangular block 81.

[0058] The inflation component 6 includes a guide groove 83 provided on the rectangular block 81, and a blocking column 2 84 is slidably connected in the guide groove 83. The blocking column 2 84 is slidably connected to the inner wall of the vent pipe 79, and a circular hole 2 85 is provided on the blocking column 2 84. A spring 2 86 is fixedly connected between the blocking column 2 84 and the inner wall of the vent pipe 79, which is used to drive the blocking column 2 84 to move after the piston 1 42 is moved, so that the circular hole 2 85 is connected to the vent pipe 79. When the device is in normal working condition, the blocking column 2 84 blocks the vent pipe 79.

[0059] The rectangular block 81 adopts a slope design at the step to improve the stability of the device during operation.

[0060] The diameter of the second gear disc 67 is larger than that of the first gear disc 64 so that the second piston 58 moves relatively more at this time to extract more air.

[0061] Example 2: Please refer to Figures 1-10 , the present invention provides a technical solution: Example 2 is optimized on the basis of Example 1;

[0062] A plurality of heat-conducting fins 87 are fixedly connected to the hollow tank 41 at equal intervals and uniformly, so as to improve the heat-conducting effect, and further improve the reaction speed of the device main body.

[0063] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0064] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention.

Claims

1. An inverter with a built-in protection structure, comprising an inverter main body (1) and a plurality of heat dissipation holes (11) formed in the inverter main body (1), characterized in that: It further includes: A rectangular plate (2), which has a rectangular structure and is slidably arranged on the inverter main body (1), and is provided with a rectangular hole (3) corresponding to the heat dissipation hole (11). By moving the rectangular plate (2), the heat dissipation hole (11) can be selectively blocked. A temperature-sensing control component (4), which is installed on the inverter main body (1) and is drivingly connected to the rectangular plate (2), is used to monitor the temperature inside the inverter main body (1) in real time, and control the movement of the rectangular plate (2) according to the temperature change. An air extraction component (5), which is arranged on the inverter main body (1) and is communicated with the internal space of the inverter main body (1), is started after the rectangular plate (2) completely blocks the heat dissipation hole (11), and is used to extract the air inside the inverter main body (1). An air inflation component (6), which is also arranged on the inverter main body (1) and is communicated with the internal space of the inverter main body (1), is started when the air extraction device works, and is used to inflate inert gas into the inverter main body (1).

2. The inverter with a self-protection structure according to claim 1, wherein: The temperature-sensing control component (4) includes a hollow tank (41) fixedly connected inside the inverter main body (1). The hollow tank (41) is filled with inert gas, and a first piston (42) is slidably connected inside the hollow tank (41). A tension spring (43) is fixedly connected between the first piston (42) and the hollow tank (41), and one end of the first piston (42) is fixedly connected with a pull rod (44). One end of the pull rod (44) slidably passes through the hollow tank (41). And a sliding rod (45) is fixedly connected to one end of the rectangular plate (2). One end of the sliding rod (45) slidably passes through the inverter main body (1) and is fixedly connected with a cylinder (46). One end of the pull rod (44) is fixedly connected with a connecting rod (47). One end of the connecting rod (47) is fixedly connected with a sliding plate (48). A guide groove member (49) is opened on the sliding plate (48). One end of the cylinder (46) is located inside the guide groove member (49), and is used to drive the rectangular plate (2) to move when the inert gas expands and pushes the first piston (42) and the pull rod (44) to move.

3. The inverter with a self-protection structure according to claim 2, characterized in that: The guide groove member (49) includes an inclined sliding groove one (51) opened on the sliding plate (48). One end of the cylinder (46) is located inside the inclined sliding groove one (51) and is slidably connected with its inner wall, and is used to drive the rectangular plate (2) to move and expand the heat dissipation hole (11) when the pull rod (44) moves. And an inclined sliding groove two (52) communicated with the inclined sliding groove one (51) is opened on the sliding plate (48), and is used to drive the rectangular plate (2) to move and close the heat dissipation hole (11) when the pull rod (44) moves. And a straight sliding groove one (53) communicated with the inclined sliding groove two (52) is opened on the sliding plate (48), and is used to keep the rectangular plate (2) stable when the pull rod (44) moves.

4. The inverter with a self-protection structure according to claim 3, characterized in that: The air extraction assembly (5) includes a syringe barrel (54) fixedly connected to the inverter main body (1). An air outlet pipe (55) and an air inlet pipe (56) are conductively connected to the syringe barrel (54). One end of the air outlet pipe (55) is located inside the inverter main body (1). Check valves (57) are installed in both the air outlet pipe (55) and the air inlet pipe (56). A second piston (58) is slidably connected inside the syringe barrel (54). A driving member (59) is provided on the inverter to drive the second piston (58) to move for extracting the air inside the inverter.

5. The inverter with a self-protection structure according to claim 4, characterized in that: The driving member (59) includes a push rod (61) fixedly connected to one end of the second piston (58). One end of the push rod (61) slidably passes through the syringe barrel (54) and is fixedly connected to a hollow rectangular frame (62). A first shaft (63) is rotatably connected to the inverter main body (1). A first gear disk (64) is fixedly connected to the first shaft (63). A second shaft (65) with one end located inside the hollow rectangular frame (62) is rotatably connected to the first gear disk (64) for driving the second piston (58) to move when the first gear disk (64) rotates. A third shaft (66) is rotatably connected to the inverter main body (1). A second gear disk (67) meshing with the first gear disk (64) is fixedly connected to the third shaft (66). An installation frame (68) is fixedly connected to the inverter main body (1). One end of the third shaft (66) passes through the installation frame (68) and is fixedly connected to a disc spring (69). A circular housing (71) is provided on the installation frame (68). One end of the disc spring (69) is fixed to the inner wall of the circular housing (71). A valve member (72) connected to the first piston (42) is provided on the air inlet pipe (56) for blocking the air inlet pipe (56). The circular housing (71) is rotatably connected to the third shaft (66). A screw rod (73) is provided on the installation frame (68) for locking the rotated circular housing (71) and the disc spring (69), and opening the valve member (72) after the first piston (42) moves a certain distance.

6. The inverter with a self-protection structure according to claim 5, wherein: The valve member (72) includes a hollow pipe (74) conductively connected to one end of the air inlet pipe (56). A connecting pipe (75) is conductively connected to the hollow pipe (74). A first plugging column (76) is slidably connected inside the connecting pipe (75). A first round hole (77) is formed in the first plugging column (76). A first spring (78) is fixedly connected between the first plugging column (76) and the connecting pipe (75). An air release pipe (79) is fixedly connected to one end of the first piston (42). The air release pipe (79) is conductively connected to the inner cavity of the hollow pipe (74). A rectangular block (81) is fixedly connected to one side of the air release pipe (79). The rectangular block (81) is designed in a stepped manner. A push rod (82) in contact with and abutted against the rectangular block (81) is fixedly connected to one end of the first plugging column (76).

7. The inverter with a built-in protection structure according to claim 6, wherein: The inflation assembly (6) includes a guide groove (83) formed in the rectangular block (81). A second plug column (84) is slidably connected in the guide groove (83). The second plug column (84) is slidably connected to the inner wall of the air release pipe (79). A second circular hole (85) is formed in the second plug column (84). A second spring (86) is fixedly connected between the second plug column (84) and the inner wall of the air release pipe (79) and is used to drive the second plug column (84) to move after the moving piston one (42) moves, so that the second circular hole (85) communicates with the air release pipe (79) after the ejector rod (82) is inserted into the guide groove (83).

8. The inverter with a self-protection structure according to claim 7, characterized in that: The stepped portion of the rectangular block (81) is designed with an inclined surface.

9. The inverter with a self-protection structure according to claim 8, characterized in that: The second gear disc (67) is designed with a diameter larger than that of the first gear disc (64).

10. The inverter with a self-protection structure according to claim 2, wherein: A plurality of heat conducting fins (87) are equidistantly and uniformly fixedly connected to the hollow tank (41).

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