A safe inverter with dual protection mechanism

Abstract

The present invention relates to the field of power electronics technology, and specifically to a safety inverter with a dual protection mechanism, including an inverter body and a heat dissipation device, the heat dissipation device including a shell and a cooling pipe arranged in the shell, a gas tank for filling fire extinguishing gas is arranged on the shell and located outside the shell, the gas tank is connected with a gas pipe extending through the inverter body to the inside thereof, an opening and closing component is arranged at the interface where the gas pipe is connected to the gas tank, a linkage component for automatically opening the opening and closing component in the case of spontaneous combustion inside the inverter body is arranged between the cooling pipe and the gas tank, and a smoke sensor is arranged on the inverter body. The present invention effectively absorbs and dissipates the heat generated inside the inverter body through the coolant circulating in the cooling pipe, and when spontaneous combustion occurs inside the inverter, the coolant is used as a power source to quickly open the opening and closing component, so that the inert gas in the gas tank is quickly sprayed into the inverter, effectively suppressing the combustion reaction.

Description

Technical Field

[0001] The invention relates to the technical field of power electronics, and in particular to a safety inverter with a dual protection mechanism. Background Art

[0002] During the operation of the solar photovoltaic inverter, its internal circuit will generate a lot of heat. In order to ensure the normal operation of the equipment, a cooling fan is usually installed inside the inverter to reduce the operating temperature of the equipment. However, traditional cooling fans are usually covered behind the internal circuit of the inverter, making the disassembly and maintenance of the equipment cumbersome, and it is impossible to quickly achieve the fire extinguishing effect in the event of spontaneous combustion.

[0003] At present, Chinese patent CN108054935A discloses an inverter installation shell that is easy to dissipate heat. The installation shell body includes a first heat sink, and a first inverter chamber and a second inverter chamber are arranged in the installation shell body. An isolation plate is arranged between the first inverter chamber and the second inverter chamber to form a heat dissipation ventilation duct. The heat dissipation ventilation duct is the same as the vent opening on the first heat sink. The installation shell body is also provided with a cooling chamber, and the cooling chamber is provided with a second heat sink along the vertical direction of the installation shell. The inverter shell realizes heat dissipation through the first heat sink and the second heat sink and through air cooling, thereby ensuring the safety of the inverter. In addition, Chinese invention patent CN116827079A discloses a solar photovoltaic inverter, including an inverter body and a heat dissipation device detachably connected to the rear side of the inverter body. The heat device includes a shell installed on the wall and two centrifugal fans arranged in parallel in the shell. The axial air inlets of the two centrifugal fans are both facing the front side of the shell, and the tangential air outlets of the two centrifugal fans are arranged in opposite directions. The left and right side walls of the shell are respectively provided with main air outlets for connecting the tangential air outlets of the two centrifugal fans. The front side of the shell is provided with an opening for exposing the axial air inlets of the two centrifugal fans. The inverter body includes a shell, main air inlets opened on the left and right side walls of the shell, and two air exhaust ports opened on the rear side wall of the shell. When the inverter body is installed on the front side of the heat dissipation device, the two air exhaust ports can be respectively connected to the axial air inlets of the two centrifugal fans; conversely, when the inverter body is separated from the heat dissipation device, the two air exhaust ports can be separated from the corresponding axial air inlets.

[0004] The above patent extracts the heat generated by the operation of the inverter body through the exhaust port and discharges it through the tangential air outlet and the main air outlet. Fresh air from the outside can enter the inverter body through the main air inlet on the shell to reduce the temperature of the inverter during operation. When the inverter body needs to be repaired, the inverter body can be directly separated from the heat dissipation device; however, in the event of spontaneous combustion inside the inverter, although quick disassembly can facilitate fire extinguishing, the efficiency is not high, and it is not convenient to disassemble in the event of spontaneous combustion, and the fire extinguishing effect cannot be achieved quickly. Therefore, there is a need for a safe inverter that can ensure heat dissipation and can quickly and automatically extinguish fires in the event of spontaneous combustion. Summary of the invention

[0005] In view of the problems existing in the prior art, a safety inverter with a dual protection mechanism is provided. The present invention effectively absorbs and dissipates the heat generated inside the inverter body through the coolant circulating in the cooling pipe. When spontaneous combustion occurs inside the inverter, the coolant is used as a power source to quickly open the switch component, so that the inert gas in the gas tank is quickly sprayed into the inverter, effectively suppressing the combustion reaction.

[0006] In order to solve the problems of the prior art, the present invention provides a safety inverter with a dual protection mechanism, comprising an inverter body and a heat dissipation device with a heat dissipation function, wherein the heat dissipation device comprises a shell surrounding the inverter body and a cooling pipe arranged in the shell, wherein the cooling pipe has a water inlet and a water outlet, a vent is provided on the shell, and a gas tank for filling a fire extinguishing gas is provided on the shell and located on the outer side thereof, the gas tank is connected with an air pipe extending through the inverter body to the interior thereof, an opening and closing component is provided at an interface where the air pipe is connected to the gas tank, a linkage component for automatically opening the opening and closing component in the event of spontaneous combustion inside the inverter body is provided between the cooling pipe and the gas tank, a smoke sensor for sensing the spontaneous combustion inside the inverter body is provided on the inverter body, and when the smoke sensor senses that smoke is generated by spontaneous combustion inside the inverter body, the linkage component is triggered using the coolant in the cooling pipe as a power source, so that the opening and closing component is in a rapid opening state, thereby allowing the fire extinguishing gas to be rapidly sprayed into the inverter body through the air pipe for extinguishing the fire.

[0007] Preferably, the gas tank is provided with a warehouse body connected to its interior, the cooling pipe is provided with a branch pipe connected to the warehouse body, a temperature control valve is provided at the connection between the branch pipe and the cooling pipe, the temperature control valve is electrically connected to the smoke sensor, and the gas tank is also provided with a switch capable of cutting off the power supply of the inverter body. When the temperature control valve is opened, part of the coolant enters the warehouse body through the branch pipe and acts on the linkage assembly, so that the switch and the opening and closing assembly are in a synchronously triggered state.

[0008] Preferably, the linkage assembly includes a bag sleeve connected to the branch pipe and a push-pull structure connected between the bag sleeve and the opening and closing assembly, the bag sleeve is arranged in the warehouse body, and the switch has a pressing part. When the coolant enters the bag sleeve, the bag sleeve is in a gradually expanding state, so that the pressing part of the switch is in a pressurized state under the pressure of the bag sleeve, and simultaneously the push-pull structure is in a moving state under the pressure of the bag sleeve to drive the opening and closing assembly to open the tracheal tube opening.

[0009] Preferably, the gas tank is provided with a plurality of the gas pipes extending into the interior of the inverter body, and an opening and closing assembly is provided at the pipe opening of each gas pipe.

[0010] Preferably, the opening and closing assembly includes a valve sleeve fixedly arranged at the trachea pipe opening and a valve stem inserted in the valve sleeve, the valve sleeve having a conical opening, the valve stem having a conical end portion matching the conical opening, the valve sleeve also having an air passage for allowing fire-extinguishing gas to enter the trachea after the valve stem is away from the valve sleeve, a spring is arranged between the valve stem and the valve sleeve, and when the spring is in an unstretched state, the valve stem and the valve sleeve are in a tightly fitted state.

[0011] Preferably, a movable plate connected to the push-pull structure is fixedly connected between all valve stems.

[0012] Preferably, the push-pull structure has a movable block movably inserted in the warehouse body and a connecting rod hinged between the movable block and the movable plate. The movable block and the movable plate both have a hinged portion for the connecting rod to hinge. When the bag sleeve expands and pushes the movable block to move toward the center of the gas tank, the connecting rod drives the movable plate to pull all the valve stems thereon in a direction away from the valve sleeve. At this time, the spring is in a stretched state.

[0013] Preferably, a step is provided in the gas tank for limiting the moving distance of the movable block. When the movable block contacts the step, the bag sleeve is in a maximum expansion state, and at this time, the valve sleeve and the valve stem are in a fully open state.

[0014] Preferably, the gas cylinder has a gas inlet for replenishing the fire-extinguishing gas.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention effectively absorbs and dissipates the heat generated inside the inverter body through the coolant circulating in the cooling pipe. When spontaneous combustion occurs inside the inverter body, the coolant can be used as a power source to quickly open the opening and closing components, and the inert gas in the gas tank can be quickly sprayed into the inverter body. The temperature is quickly lowered and oxygen is isolated, effectively suppressing the combustion reaction and preventing the spread of fire. Not only does it achieve efficient heat dissipation, it can also automatically extinguish fires, ensuring a quick response at the initial stage of a fire, minimizing losses, and providing a strong guarantee for the safe operation of the inverter through the dual protection mechanisms of heat dissipation and fire extinguishing.

[0017] 2. The present invention uses a dual trigger mechanism of the temperature control valve to respond quickly at the early stage of a fire, discover and deal with fire hazards in a timely manner, and minimize losses. It not only relies on the signal of the smoke sensor, but can also automatically start when the temperature rises abnormally, providing a dual protection mechanism. The entire process does not require human intervention, and all processes from fire warning, power cut-off to fire extinguishing gas injection are automatically completed by the control system, thereby improving safety protection efficiency.

[0018] 3. The present invention expands the bag sleeve and applies pressure to the pressing part and the push-pull structure of the switch, so that the fire-extinguishing gas is quickly sprayed into the inverter body when the power is cut off. That is, after the pressing part of the switch is pressurized, the inverter power is immediately cut off, and the push-pull structure drives the opening and closing component to quickly open the trachea pipe port under the pressure of the bag sleeve, so that the fire-extinguishing gas can be immediately sprayed into the inverter body, which greatly improves the safety and reliability of the inverter. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the safety inverter in the present invention.

[0020] Figure 2 It is a partial three-dimensional structural cross-sectional view of the safety inverter in the present invention.

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the safety inverter of the present invention without the outer shell.

[0022] Figure 4 It is a top view of the safety inverter of the present invention without the casing.

[0023] Figure 5 yes Figure 4 A cross-sectional view of the three-dimensional structure at AA.

[0024] Figure 6 It is a three-dimensional structural schematic diagram of the cooling pipe and the gas tank of the safety inverter in the present invention.

[0025] Figure 7 It is a top view of the cooling pipe and the gas tank of the safety inverter in the present invention.

[0026] Figure 8 yes Figure 7 Plane cross-sectional view at BB.

[0027] Fig. 9 yes Figure 7 A cross-sectional view of the three-dimensional structure at BB.

[0028] Fig.10 yes Figure 8 Enlarged schematic diagram of point C.

[0029] The numbers in the figure are: 1. Inverter body; 11. Smoke sensor; 2. Housing; 21. Vent; 3. Cooling pipe; 31. Water inlet; 32. Water outlet; 33. Branch pipe; 331. Temperature control valve; 4. Gas tank; 41. Gas pipe; 411. Air inlet; 42. Chamber; 43. Switch; 431. Pressing part; 5. Opening and closing assembly; 51. Valve sleeve; 511. Air duct; 52. Valve stem; 521. Movable plate; 53. Spring; 6. Linkage assembly; 61. Bag sleeve; 62. Push-pull structure; 621. Movable block; 6211. Step; 622. Connecting rod. DETAILED DESCRIPTION

[0030] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] See also Figure 1-Figure 5 As shown, a safety inverter with a dual protection mechanism includes an inverter body 1 and a heat dissipation device with a heat dissipation function, wherein the heat dissipation device includes a shell 2 surrounding the inverter body 1 and a cooling pipe 3 arranged in the shell 2, wherein the cooling pipe 3 has a water inlet 31 and a water outlet 32, wherein a vent 21 is provided on the shell 2, and a gas tank 4 for filling a fire extinguishing gas is provided on and outside the shell 2, wherein the gas tank 4 is connected to a gas pipe 41 extending from the inverter body 1 to the inside thereof, wherein the gas pipe 41 is connected to the gas tank 4 An opening and closing component 5 is provided at the interface, and a linkage component 6 is provided between the cooling pipe 3 and the gas tank 4 for automatically opening the opening and closing component 5 in the event of spontaneous combustion inside the inverter body 1. A smoke sensor 11 is provided on the inverter body 1 for sensing spontaneous combustion inside the inverter body 1. When the smoke sensor 11 senses that spontaneous combustion inside the inverter body 1 generates smoke, the linkage component 6 is triggered with the coolant in the cooling pipe 3 as a power source, so that the opening and closing component 5 is in a fast-opening state, thereby allowing the fire-extinguishing gas to be quickly sprayed into the inverter body 1 through the air pipe 41 to extinguish the fire.

[0032] When the heat sink of the inverter works normally, the coolant circulating in the cooling pipe 3 effectively absorbs and dissipates the heat generated inside the inverter body 1. In addition, the vents 21 provided on the housing 2 further enhance air circulation and help dissipate heat.

[0033] The coolant enters the cooling pipe 3 from the external cooling system through the water inlet 31, circulates in the cooling pipe 3, exchanges heat with the electronic components inside the inverter body 1, and absorbs heat through indirect contact. After absorbing the heat, the coolant flows out through the water outlet 32 ​​and enters the external cooling system, and is recycled again after cooling.

[0034] When spontaneous combustion occurs inside the inverter body 1, the heat dissipation device not only performs the heat dissipation task, but also has the function of automatic fire extinguishing. The smoke sensor 11 senses abnormal smoke and immediately triggers an alarm signal. The signal sent by the smoke sensor 11 is transmitted to the control system, and the control system activates the linkage component 6. The linkage component 6 connects the cooling pipe 3 and the gas tank 4, uses the coolant in the cooling pipe 3 as a power source, and quickly opens the opening and closing component 5 by hydraulic means, ensuring that the fire extinguishing gas can be quickly sprayed into the inverter body 1 at the early stage of the fire.

[0035] The fire-extinguishing gas in the gas tank 4 is an inert gas, which is not combustible and can quickly reduce the oxygen concentration, effectively inhibiting the combustion; the gas tank 4 is connected to the inside of the inverter body 1 through the gas pipe 41, and the gas pipe 41 passes through the inverter body 1 so that the fire-extinguishing gas can be directly sprayed in. The gas pipe 41 is made of high-temperature resistant material and will not be damaged in a high-temperature environment.

[0036] When the opening and closing component 5 is triggered by the linkage component 6, the fire-extinguishing gas in the gas tank 4 is rapidly sprayed into the inverter body 1 through the gas pipe 41. Since the coolant as a power source provides a strong thrust, the fire-extinguishing gas can fill the entire internal space in a short time, quickly reduce the temperature and isolate oxygen, prevent the fire from spreading, and thus achieve the purpose of extinguishing the fire.

[0037] See also Figure 2-Figure 9 As shown, the gas tank 4 is provided with a warehouse body 42 connected to the interior thereof, the cooling pipe 3 is provided with a branch pipe 33 connected to the warehouse body 42, a temperature control valve 331 is provided at the connection between the branch pipe 33 and the cooling pipe 3, the temperature control valve 331 is electrically connected to the smoke sensor 11, and the gas tank 4 is also provided with a switch 43 capable of cutting off the power supply of the inverter body 1. When the temperature control valve 331 is opened, the coolant enters the warehouse body 42 through the branch pipe 33 and acts on the linkage component 6, so that the switch 43 and the opening and closing component 5 are in a synchronously triggered state.

[0038] A bin body 42 is provided at the top and the bottom of the gas tank 4, and coolant enters the two bin bodies 42 at the same time to act on the corresponding linkage components 6, providing a stable and sufficient driving force.

[0039] The temperature control valve 331 can be opened and closed by controlling the control system according to the signal transmitted by the smoke sensor 11 .

[0040] The temperature control valve 331 can also use a bimetallic strip as a temperature sensing element. The bimetallic strip is made of two metal layers with different thermal expansion coefficients. When the temperature rises, the bimetallic strip bends and pushes the valve to open; when the temperature drops, the bimetallic strip returns to its original shape and the valve closes again. The specific structure of the temperature control valve 331 is not shown in the figure.

[0041] When the smoke sensor 11 detects smoke, the control system immediately opens the temperature control valve 331. Even if the temperature inside the inverter body 1 has not reached the set threshold at this time, the coolant can be used as a power source to act on the linkage component 6 to open the opening and closing component 5, so that the fire extinguishing gas is quickly sprayed into the inverter body 1 through the gas tank 4. The fire extinguishing gas can respond quickly to prevent the fire from spreading.

[0042] When the temperature inside the inverter body 1 rises abnormally, even if the smoke sensor 11 does not detect smoke, the temperature control valve 331 opens immediately under the influence of the abnormally high temperature, prompting the coolant to act on the linkage component 6 as a power source to open the opening and closing component 5, so that the fire extinguishing gas is quickly sprayed into the inverter body 1 through the gas tank 4. The fire extinguishing gas can respond quickly and play a preventive effect.

[0043] See also Figure 2-Figure 9 As shown, the linkage assembly 6 includes a bag sleeve 61 connected to the branch pipe 33 and a push-pull structure 62 connected between the bag sleeve 61 and the opening and closing assembly 5, the bag sleeve 61 is arranged in the warehouse body 42, and the switch 43 has a pressing portion 431. When the coolant enters the bag sleeve 61, the bag sleeve 61 is in a gradually expanding state, so that the pressing portion 431 of the switch 43 is in a pressurized state under the pressure of the bag sleeve 61, and simultaneously the push-pull structure 62 is in a moving state under the pressure of the bag sleeve 61 to drive the opening and closing assembly 5 to open the tube mouth of the trachea 41.

[0044] When the coolant in the cooling pipe 3 enters the bag sleeve 61 connected to the branch pipe 33, the bag sleeve 61 gradually expands and applies pressure to the pressing part 431 and the push-pull structure 62 of the switch 43. This process simultaneously realizes two actions: first, the pressing part 431 is pressed to cut off the inverter power supply; second, the push-pull structure 62 drives the opening and closing component 5 to quickly open the air pipe 41 under the pressure of the bag sleeve 61, so that the fire extinguishing gas can be immediately sprayed into the inverter body 1. The whole process is fast, automatic and synchronous, ensuring that it can respond quickly in the early stage of a fire or abnormal high temperature, effectively cut off the power supply and start the fire extinguishing procedure, prevent the spread of fire to the greatest extent, and improve the safety and reliability of the inverter body 1.

[0045] See also Figure 2-Figure 9 As shown, the gas tank 4 is provided with a plurality of gas pipes 41 extending into the interior of the inverter body 1 , and an opening and closing assembly 5 is provided at the pipe opening of each gas pipe 41 .

[0046] Multiple air pipes 41 can ensure that the fire-extinguishing gas is evenly distributed throughout the inverter body 1, avoiding fire-extinguishing blind spots that may exist in a single air pipe 41. The all-round coverage enables the fire-extinguishing gas to quickly reach various key locations and effectively suppress the fire.

[0047] See also Figure 5-Figure 10As shown, the opening and closing assembly 5 includes a valve sleeve 51 fixedly arranged at the pipe mouth of the air pipe 41 and a valve stem 52 inserted in the valve sleeve 51, the valve sleeve 51 has a tapered mouth, the valve stem 52 has a tapered end portion that fits with the tapered mouth, and the valve sleeve 51 is also provided with an air passage 511 that can supply fire extinguishing gas to enter the air pipe 41 after the valve stem 52 is away from the valve sleeve 51, a spring 53 is provided between the valve stem 52 and the valve sleeve 51, and when the spring 53 is in an unstretched state, the valve stem 52 and the valve sleeve 51 are in a tightly fitted state.

[0048] Under normal circumstances, the spring 53 between the valve stem 52 and the valve sleeve 51 is in an unstretched state, and the tapered end of the valve stem 52 is tightly fitted at the tapered opening of the valve sleeve 51. At this time, the airway 511 is completely closed to prevent the fire extinguishing gas from entering the air pipe 41.

[0049] When the coolant enters the bag sleeve 61 and gradually expands, the bag sleeve 61 applies pressure to the push-pull structure 62. After being subjected to pressure, the push-pull structure 62 pushes the valve stem 52 to overcome the resistance of the spring 53 and move it away from the valve sleeve 51. At this time, the tapered end of the valve stem 52 is separated from the tapered mouth of the valve sleeve 51, and the air channel 511 on the valve sleeve 51 is opened, allowing the fire extinguishing gas to enter the air pipe 41 from the gas tank 4 through the air channel 511, and finally spray into the inverter body 1, ensuring that the fire extinguishing gas can be sprayed into the inverter body 1 in a timely and effective manner in the event of a fire or abnormal high temperature.

[0050] See also Figure 5-Figure 10 As shown, a movable plate 521 connected to the push-pull structure 62 is fixedly connected between all valve stems 52 .

[0051] The movable plate 521 ensures that all valve stems 52 can move synchronously. When the push-pull structure 62 is subjected to the pressure of the expansion of the bag sleeve 61, the movable plate 521 will push or pull all the valve stems 52 at the same time, so that they are away from the valve sleeve 51 at the same time, thereby realizing the synchronous opening of all air passages 511, ensuring that the fire-extinguishing gas can enter each air pipe 41 evenly and quickly, and be sprayed into the inverter body 1.

[0052] See also Figure 5-Figure 10 As shown, the push-pull structure 62 has a movable block 621 movably inserted in the warehouse body 42 and a connecting rod 622 hinged between the movable block 621 and the movable plate 521. The movable block 621 and the movable plate 521 both have a hinged portion for the connecting rod 622 to be hinged. When the bag sleeve 61 expands and pushes the movable block 621 to move toward the center of the gas tank 4, the connecting rod 622 drives the movable plate 521 to pull all the valve stems 52 thereon in a state of being away from the valve sleeve 51. At this time, the spring 53 is in a stretched state.

[0053] Under normal circumstances, the bag sleeve 61 is in an unexpanded state, the movable block 621 is located at the initial position of the chamber body 42, the connecting rod 622 is hinged between the movable block 621 and the movable plate 521, all valve stems 52 are tightly fitted with the valve sleeve 51, the spring 53 is in a natural unstretched state, and the airway 511 is completely closed.

[0054] When the coolant enters the bag sleeve 61 and gradually expands, the bag sleeve 61 applies pressure to push the movable block 621 to move toward the center of the gas tank 4. The movement of the movable block 621 is transmitted to the movable plate 521 through the connecting rod 622, so that the movable plate 521 and all the valve stems 52 connected to it are pulled away from their respective valve sleeves 51. As the movable plate 521 moves, the valve stem 52 overcomes the resistance of the spring 53 and is gradually withdrawn from the valve sleeve 51. The conical end of the valve stem 52 is separated from the conical mouth of the valve sleeve 51, opening the airway 511. The fire extinguishing gas enters each air pipe 41 from the gas tank 4 through the airway 511, and is finally sprayed into the inverter body 1 to achieve the fire extinguishing function.

[0055] See also Figure 5-Figure 10 As shown, the gas cylinder 4 is provided with a step 6211 for limiting the moving distance of the movable block 621. When the movable block 621 contacts the step 6211, the bag sleeve 61 is in the maximum expansion state, and at this time, the valve sleeve 51 and the valve stem 52 are in a fully open state.

[0056] The setting of the step 6211 ensures the moving distance of the movable block 621, so that the bag sleeve 61 can stop at the preset maximum expansion state, ensuring that all valve stems 52 are pulled to a fixed position, so that the airway 511 between the valve sleeve 51 and the valve stem 52 is fully opened, avoiding detachment due to excessive expansion.

[0057] See also Figure 8 and Fig. 9 As shown, the gas cylinder 4 has a gas inlet 411 for replenishing the fire extinguishing gas.

[0058] The air inlet 411 allows the gas cylinder 4 to be replenished with fire extinguishing gas during or after fire extinguishing, ensuring that an adequate supply of fire extinguishing gas is maintained during multiple fire events or long-term fire extinguishing operations, making the gas cylinder 4 reusable and enhancing the ability to continuously extinguish fires.

[0059] The present invention effectively absorbs and dissipates the heat generated inside the inverter body 1 through the coolant circulating in the cooling pipe 3, thereby achieving efficient heat dissipation. When spontaneous combustion occurs inside the inverter, the smoke sensor 11 immediately senses the abnormal smoke and triggers an alarm signal to the control system. The control system activates the linkage component 6, uses the coolant as a power source, quickly opens the opening and closing component 5, and quickly sprays the inert gas in the gas tank 4 into the inverter, quickly lowers the temperature and isolates oxygen, effectively suppresses the combustion reaction, and prevents the spread of fire.

[0060] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A safety inverter with a dual protection mechanism, comprising an inverter body (1) and a heat dissipation device with a heat dissipation function; It is characterized in that The heat dissipation device comprises a housing (2) surrounding an inverter body (1) therein and a cooling pipe (3) arranged in the housing (2), the cooling pipe (3) having a water inlet (31) and a water outlet (32), and a vent (21) is provided on the housing (2); A gas tank (4) for filling fire extinguishing gas is provided on the outer shell (2) and located outside the outer shell (2); a gas pipe (41) is provided on the gas tank (4) and extends through the inverter body (1) to the interior thereof; an opening and closing component (5) is provided at the interface where the gas pipe (41) and the gas tank (4) are connected; and a linkage component (6) is provided between the cooling pipe (3) and the gas tank (4) for automatically opening the opening and closing component (5) in the event of spontaneous combustion inside the inverter body (1); The inverter body (1) is provided with a smoke sensor (11) for sensing spontaneous combustion inside the inverter body; When the smoke sensor (11) senses that smoke is generated by spontaneous combustion inside the inverter body (1), the linkage component (6) is triggered using the coolant in the cooling pipe (3) as a power source, so that the opening and closing component (5) is in a rapid opening state, thereby allowing the fire extinguishing gas to be quickly sprayed into the inverter body (1) through the gas pipe (41) to extinguish the fire; The gas tank (4) is provided with a bin body (42) in communication with the interior thereof; the cooling pipe (3) is provided with a branch pipe (33) in communication with the bin body (42); a temperature control valve (331) is provided at the connection point between the branch pipe (33) and the cooling pipe (3); the temperature control valve (331) is electrically connected to the smoke sensor (11); the gas tank (4) is also provided with a switch (43) capable of cutting off the power supply of the inverter body (1); when the temperature control valve (331) is opened, the coolant enters the bin body (42) through the branch pipe (33) and acts on the linkage component (6), so that the switch (43) and the opening and closing component (5) are in a synchronously triggered state.

2. A safety inverter with a dual protection mechanism according to claim 1, characterized in that: The linkage assembly (6) comprises a bag sleeve (61) connected to the branch pipe (33) and a push-pull structure (62) connected between the bag sleeve (61) and the opening and closing assembly (5); the bag sleeve (61) is arranged in the chamber body (42); the switch (43) has a pressing portion (431); when the coolant enters the bag sleeve (61), the bag sleeve (61) is in a gradually expanding state, so that the pressing portion (431) of the switch (43) is in a pressurized state under the pressure of the bag sleeve (61), and simultaneously the push-pull structure (62) is in a moving state under the pressure of the bag sleeve (61) to drive the opening and closing assembly (5) to open the tube opening of the trachea (41).

3. A safety inverter with a dual protection mechanism according to claim 2, characterized in that: The gas tank (4) is provided with a plurality of gas pipes (41) extending into the interior of the inverter body (1), and each gas pipe (41) is provided with an opening and closing assembly (5) at the pipe opening.

4. The safety inverter with a dual protection mechanism according to claim 3, characterized in that: The opening and closing assembly (5) comprises a valve sleeve (51) fixedly arranged at the mouth of the air pipe (41) and a valve stem (52) inserted into the valve sleeve (51); the valve sleeve (51) has a tapered mouth; the valve stem (52) has a tapered end portion that fits with the tapered mouth; the valve sleeve (51) is also provided with an air passage (511) that allows fire extinguishing gas to enter the air pipe (41) after the valve stem (52) is away from the valve sleeve (51); a spring (53) is provided between the valve stem (52) and the valve sleeve (51); when the spring (53) is in an unstretched state, the valve stem (52) and the valve sleeve (51) are in a tightly fitted state.

5. The safety inverter with a dual protection mechanism according to claim 4, characterized in that: A movable plate (521) connected to the push-pull structure (62) is fixedly connected between all valve stems (52).

6. A safety inverter with a dual protection mechanism according to claim 5, characterized in that: The push-pull structure (62) comprises a movable block (621) movably inserted into the chamber body (42) and a connecting rod (622) hinged between the movable block (621) and the movable plate (521). The movable block (621) and the movable plate (521) both comprise a hinged portion for the connecting rod (622) to be hinged. When the bag sleeve (61) expands and pushes the movable block (621) to move toward the center of the gas cylinder (4), the connecting rod (622) drives the movable plate (521) to pull all the valve stems (52) thereon in a direction away from the valve sleeve (51). At this time, the spring (53) is in a stretched state.

7. The safety inverter with a dual protection mechanism according to claim 6, characterized in that: The gas cylinder (4) is provided with a step (6211) for limiting the moving distance of the movable block (621). When the movable block (621) contacts the step (6211), the bag sleeve (61) is in a maximum expansion state, and at this time, the valve sleeve (51) and the valve stem (52) are in a fully open state.

8. The safety inverter with a dual protection mechanism according to claim 1, characterized in that: The gas tank (4) is provided with a gas inlet (411) for replenishing the fire extinguishing gas.

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