A dc microgrid converter

Abstract

This invention relates to the field of electrical technology, specifically to a DC microgrid converter, comprising a converter body, a first fan mounted on the top of the converter body, and two exhaust pipes connected to the top of the first fan. The other ends of both exhaust pipes penetrate the side wall of the converter body, and multiple sets of heat sinks are evenly installed on the pipe walls. A thermal expansion mechanism is fitted onto the top of the converter body. The thermal expansion mechanism includes a fixing frame. When the temperature inside the converter body rises, external air is introduced through the second fan. When the external environment is humid, silica gel desiccant absorbs the moisture and discharges it into the converter body, effectively improving the cooling effect and preventing damage to internal components from humid air, thus effectively extending its service life. This solves the problem mentioned in the background art where the introduction of humid air into the converter damages internal components.

Description

Technical Field

[0001] This invention relates to the field of electrical technology, specifically to a DC microgrid converter. Background Technology

[0002] In practical applications, some situations require converting AC power to DC power, which is where rectifier circuits come in. In other situations, DC power needs to be converted to AC power; this reverse process of rectification is called an inverter circuit. Under certain conditions, a thyristor circuit can function as both a rectifier and an inverter circuit; such a device is called a converter.

[0003] A converter is an electrical device that changes the voltage, frequency, number of phases, and other electrical quantities or characteristics of a power supply system. Converters on the street usually use louvers for heat dissipation. This method makes it easy for dust to enter and affect the internal components. Moreover, in humid conditions, if external gases are accidentally introduced, the internal components of the converter will be damaged, resulting in unsatisfactory performance.

[0004] To address this, a DC microgrid converter is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a DC microgrid converter to solve the problem mentioned in the background art that the introduction of humid air into the converter will damage the internal components.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A DC microgrid converter includes a converter body, a first fan installed on the top of the converter body, two exhaust pipes connected to the top of the first fan, the other ends of the two exhaust pipes penetrating the side wall of the converter body, multiple sets of heat sinks evenly installed on the pipe walls of the two exhaust pipes, and a thermal expansion mechanism connected to the top of the converter body.

[0008] When the first fan is turned on, it can draw gas from inside the converter body into the exhaust pipe. Through the setting of heat sink, the hot gas passing through the exhaust pipe can be cooled down. The cooled gas will flow back into the converter body. When the temperature is not high enough, the internal gas will be recycled for cooling.

[0009] The thermal expansion mechanism includes a fixed frame, an airbag installed at the bottom of the inner cavity of the fixed frame, a heat-conducting plate installed at the bottom of the fixed frame, and heat-conducting rods evenly installed on the top of the heat-conducting plate. The top ends of each group of heat-conducting rods penetrate the fixed frame and the airbag and extend into the airbag. A top plate is fixedly connected to the top of the airbag and is slidably connected to the inner wall of the fixed frame. A first spring is installed on the top of the top plate, and the top end of the first spring is fixedly connected to the top of the inner cavity of the fixed frame. A first triggering mechanism is provided on the top of the top plate.

[0010] When the temperature inside the converter body rises, the heat-conducting plate transfers the temperature inside the converter body to the air bladder through the heat-conducting rod, which enables the air bladder to expand and drive the top plate to move upward, so as to trigger the subsequent triggering mechanism.

[0011] Preferably, the first triggering mechanism includes a second spring, which is fixedly connected to the top plate. A sliding plate is provided above the second spring, and the sliding plate is slidably connected to the inner wall of the fixed frame. A first contact block is fixedly connected to the top of the second spring and the bottom of the sliding plate. The two first contact blocks are electrically connected to the first fan. Air filtering mechanisms are installed at the bottom of both sides of the inverter body.

[0012] The upward movement of the second spring causes the two first contact blocks to come into contact, which in turn controls the first fan to start, cooling the converter body.

[0013] Preferably, the air filtration mechanism includes sleeves, with filter screens installed at the opposite ends of the two sleeves, and two corrugated pipes provided on opposite sides of the two sleeves. The two sleeves are fixedly connected to the adjacent corrugated pipes, and an air inlet pipe is installed between the two adjacent corrugated pipes. Silica gel desiccant is installed inside the two air inlet pipes. The two inner corrugated pipes are installed at the bottom of the inner cavity of the converter body, and a second fan is installed inside the two inner corrugated pipes. An elastic support mechanism is provided below the two air inlet pipes.

[0014] When the two third contact blocks come into contact, the energized solenoid and two second fans can be activated. The retraction of the energized solenoid opens the mechanism, moving the baffle away from the bellows. The second fans draw in outside air, which is filtered through a filter screen before entering the bushing. Then, it passes through the bellows and the air inlet pipe and is discharged into the converter body. The silica gel desiccant absorbs and filters moisture from the humid air, effectively preventing water vapor from entering the converter body and damaging components, thus achieving the purpose of cooling and effectively improving the cooling efficiency inside the converter body.

[0015] Preferably, the elastic support mechanism includes a U-shaped frame, both U-shaped frames are fixedly connected to the bottom of the inner cavity of the converter body, a base plate is slidably connected to the inner wall of both U-shaped frames, the top of both base plates is in contact with the bottom of the adjacent air intake pipe, two third springs are fixedly connected to the bottom of both base plates, the bottom ends of both third springs are fixedly connected to the adjacent U-shaped frame, and a second triggering mechanism is provided on one side of the bottom of both base plates.

[0016] When the silica gel desiccant absorbs moisture from the outside air and its weight increases, the air inlet pipe will cause the base plate to move downwards and compress the third spring, so that the subsequent second triggering mechanism can be activated.

[0017] Preferably, the second triggering mechanism includes a fourth spring, and a second contact block is installed at the bottom of both fourth springs and at the bottom of the inner cavity of the adjacent U-shaped frame. An alarm is provided on the opposite side of both U-shaped frames, and both alarms are installed at the bottom of the inner cavity of the converter body. The two adjacent second contact blocks are electrically connected to the adjacent alarms. An opening mechanism is provided at the bottom of the inner cavity of the converter body.

[0018] When the silica gel desiccant absorbs a certain amount of moisture from the air, the increased weight of the air inlet pipe causes the fourth spring to move downwards via the base plate, bringing the two second contact blocks into contact. Once two adjacent second contact blocks come into contact, they will activate the adjacent alarm, thus alerting the staff.

[0019] Preferably, the opening mechanism includes a vertical plate, on which a T-shaped rod is slidably connected. A solenoid is installed on the wall of the T-shaped rod, and both ends of the solenoid are fixedly connected to the T-shaped rod and the vertical plate. A support plate is provided on one side of the vertical plate, and the support plate is fixedly connected to the converter body. A gear is rotatably connected to the front wall of the support plate. A second toothed plate and a first toothed plate are respectively meshed at the top and bottom of the gear. The second toothed plate is slidably connected to the vertical plate, and the first toothed plate is fixedly connected to the T-shaped rod. Baffles are fixedly connected to the opposing sides of the second toothed plate and the first toothed plate. Both baffles are in contact with adjacent bellows. A transmission mechanism is provided above the second toothed plate.

[0020] When the energized solenoid is turned on, it retracts and drives the first toothed plate to move to the right via the T-shaped rod, which in turn drives the gear to rotate. This causes the second toothed plate to move to the left. At this time, the first and second toothed plates move closer to each other and move the adjacent baffle away from the adjacent bellows, so as to facilitate the subsequent introduction of external gas.

[0021] Preferably, the transmission mechanism includes a rotating rod, which is rotatably connected to the inner wall of the converter body. Both the rod wall and the front wall of the support plate are equipped with bevel gears, which mesh with each other. Grooved wheels are installed on the shafts of the gears and the rear bevel gears. A belt is connected between the two grooved wheels, and a dust removal mechanism is installed on both filter screens.

[0022] When the gear rotates, it drives the upper bevel gear to rotate via the belt. The interaction of the two bevel gears drives the rotating rod to rotate, thus achieving the purpose of transmission.

[0023] Preferably, the dust removal mechanism includes brush plates, both of which are rotatably connected to adjacent filter screens and in contact with adjacent filter screens. Small gears are fixedly connected to the rotating shafts of both brush plates, and large gears mesh with the tops of both small gears. Both large gears are fixedly connected to the rotating rod.

[0024] The rotating rod rotates, which in turn drives the small gear to rotate via the large gear, thereby causing the brush plate to rotate and clean the impurities on the surface of the filter screen, achieving the purpose of preventing clogging.

[0025] Preferably, a third contact block is installed on the top of the slide plate and the top of the inner cavity of the fixed frame, and the two third contact blocks are electrically connected to the energized solenoid and the two second fans.

[0026] When the temperature inside the converter increases, the air bladder continues to expand, which causes the second spring to move upward and push the slide plate to make the two third contact blocks come into contact, thereby turning on the two second fans of the energized solenoid to facilitate subsequent operation.

[0027] Preferably, an exhaust pipe is fixedly connected to one side of the top of the converter body, the exhaust pipe is connected to the inside of the converter body, a stop plate is movably connected to the inner wall of the exhaust pipe, and a fifth spring is installed between the top of the stop plate and the inner wall of the exhaust pipe.

[0028] When the first fan is turned on, the gas inside the converter body can be drawn into the exhaust pipe. Through the setting of the heat sink, the hot gas passing through the exhaust pipe can be cooled down. The cooled gas will flow back into the converter body. At this time, the pressure inside the converter body is constant. The fifth spring is in the initial state and keeps the stop plate against the inner wall of the exhaust pipe, so that the internal gas can be recycled for cooling.

[0029] When the second fan is turned on, it draws in outside air. The air is filtered through the filter screen and enters the casing. Then, it passes through the bellows and the inlet pipe and is discharged into the converter body. Since the pressure inside the converter body is constant, the introduction of outside air will increase the pressure inside the converter body. At this time, the air inside the converter body will move upward through the outlet pipe. The air will then squeeze the fifth spring through the stop plate, causing the stop plate to deflect and open the outlet pipe. This allows the air inside the converter body to be discharged outward, achieving the purpose of exhaust and effectively improving the cooling efficiency inside the converter body.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0031] 1. When the temperature inside the converter body is not high, the first fan will circulate the gas inside the converter body to cool the interior of the converter body. When the temperature inside the converter body rises, the second fan will introduce outside gas. When the outside is humid, the silica gel desiccant will absorb the moisture and discharge it into the converter body, which can effectively improve the cooling effect and avoid damage to internal components caused by humid gas, thus effectively extending its service life.

[0032] 2. When the silica gel desiccant absorbs moisture from the outside air and its weight increases, the air inlet pipe will cause the base plate to move downwards, compressing the third spring. When the silica gel desiccant absorbs a certain amount of moisture from the air, the weight of the air inlet pipe will increase, causing the base plate to drive the fourth spring downwards, making the two second contact blocks contact each other. After two adjacent second contact blocks contact each other, they will control the adjacent alarm to sound, achieving the purpose of reminding the staff to replace it, which can effectively improve its usage effect. Attached Figure Description

[0033] Figure 1 This is an overall front view of the present invention;

[0034] Figure 2 This is an overall sectional view of the present invention;

[0035] Figure 3 For the present invention Figure 2 Enlarged view of the structure of section A in the middle;

[0036] Figure 4 For the present invention Figure 2 Enlarged view of the structure of section B in the middle;

[0037] Figure 5 For the present invention Figure 2 Enlarged view of the C-section structure;

[0038] Figure 6 For the present invention Figure 2 Enlarged view of the structure of section D

[0039] Figure 7 This is a right view of the support plate of the present invention.

[0040] In the diagram: 1. Converter body; 2. First fan; 3. Exhaust pipe; 4. Heat sink; 5. Fixing frame; 6. Airbag; 7. Heat-conducting plate; 8. Heat-conducting rod; 9. Top plate; 10. First spring; 11. Second spring; 12. First contact block; 13. Slide plate; 14. Third contact block; 15. Sleeve; 16. Filter screen; 17. Corrugated pipe; 18. Inlet pipe; 19. Silica gel desiccant; 20. Base plate; 21. U-shaped frame; 22. 23. Third spring; 24. Fourth spring; 25. Second contact block; 26. Alarm; 27. Support plate; 28. Vertical plate; 29. ​​Solenoid; 30. T-shaped rod; 31. First toothed plate; 32. Gear; 33. Second toothed plate; 34. Rotating rod; 35. Bevel gear; 36. Baffle; 37. Large gear; 38. Small gear; 39. Brush plate; 40. Second fan; 41. Air outlet pipe; 42. Backing plate; 43. Fifth spring. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] Please see Figures 1 to 7 This invention provides a DC microgrid converter, the technical solution of which is as follows:

[0045] A DC microgrid converter includes a converter body 1, a first fan 2 installed on the top of the converter body 1, two exhaust pipes 3 connected to the top of the first fan 2, the other ends of the two exhaust pipes 3 penetrating the side wall of the converter body 1, multiple sets of heat sinks 4 evenly installed on the pipe walls of the two exhaust pipes 3, and a thermal expansion mechanism connected to the top of the converter body 1.

[0046] When the first fan 2 is turned on, it can draw the gas inside the converter body 1 into the exhaust pipe 3. Through the setting of the heat sink 4, the hot gas passing through the exhaust pipe 3 can be cooled down. The cooled gas will flow back into the converter body 1. When the temperature is not high enough, the internal gas will be recycled for cooling.

[0047] The thermal expansion mechanism includes a fixed frame 5, an airbag 6 installed at the bottom of the inner cavity of the fixed frame 5, a heat-conducting plate 7 installed at the bottom of the fixed frame 5, and heat-conducting rods 8 evenly installed on the top of the heat-conducting plate 7. The top of each group of heat-conducting rods 8 passes through the fixed frame 5 and the airbag 6 and extends into the airbag 6. A top plate 9 is fixedly connected to the top of the airbag 6. The top plate 9 is slidably connected to the inner wall of the fixed frame 5. A first spring 10 is installed on the top of the top plate 9. The top of the first spring 10 is fixedly connected to the top of the inner cavity of the fixed frame 5. A first triggering mechanism is provided on the top of the top plate 9.

[0048] When the temperature inside the converter body 1 rises, the heat-conducting plate 7 transfers the temperature inside the converter body 1 to the airbag 6 through the heat-conducting rod 8, which enables the airbag 6 to expand and drive the top plate 9 to move upward, so as to trigger the subsequent triggering mechanism.

[0049] As one embodiment of the present invention, refer to Figure 2 and 3The first triggering mechanism includes a second spring 11, which is fixedly connected to the top plate 9. A slide plate 13 is provided above the second spring 11, and the slide plate 13 is slidably connected to the inner wall of the fixed frame 5. A first contact block 12 is fixedly connected to the top of the second spring 11 and the bottom of the slide plate 13. The two first contact blocks 12 are electrically connected to the first fan 2. Air filtering mechanisms are installed at the bottom of both sides of the converter body 1.

[0050] The second spring 11 moves upward, causing the two first contact blocks 12 to come into contact. At this time, the first fan 2 is turned on to cool the inside of the converter body 1.

[0051] As one embodiment of the present invention, refer to Figure 2 and 4 The air filtration mechanism includes a sleeve 15, with a filter screen 16 installed at the opposite ends of the two sleeves 15. Two corrugated pipes 17 are provided on opposite sides of the two sleeves 15. The two sleeves 15 are fixedly connected to the adjacent corrugated pipes 17. An air inlet pipe 18 is installed between the two adjacent corrugated pipes 17. Silica gel desiccant 19 is installed inside the two air inlet pipes 18. The two inner corrugated pipes 17 are installed at the bottom of the inner cavity of the converter body 1. A second fan 39 is installed inside the two inner corrugated pipes 17. An elastic support mechanism is provided below the two air inlet pipes 18.

[0052] When the two third contact blocks 14 come into contact, the energized solenoid 28 and the two second fans 39 can be activated. The retraction of the energized solenoid 28 can open the mechanism, causing the baffle 35 to move away from the bellows 17. The second fans 39 will draw in outside air, which will be filtered through the filter screen 16 and enter the sleeve 15. Then, it will be discharged into the converter body 1 through the bellows 17 and the air inlet pipe 18. The silica gel desiccant 19 can absorb and filter the moisture in the humid air, effectively preventing water vapor from entering the interior of the converter body 1 and damaging the components, thus achieving the purpose of cooling and effectively improving the cooling efficiency inside the converter body 1.

[0053] As one embodiment of the present invention, refer to Figure 2 and 4 The elastic support mechanism includes a U-shaped frame 21. Both U-shaped frames 21 are fixedly connected to the bottom of the inner cavity of the converter body 1. A base plate 20 is slidably connected to the inner wall of both U-shaped frames 21. The top of both base plates 20 is in contact with the bottom of the adjacent air intake pipe 18. Two third springs 22 are fixedly connected to the bottom of both base plates 20. The bottom ends of both third springs 22 are fixedly connected to the adjacent U-shaped frames 21. A second triggering mechanism is provided on one side of the bottom of both base plates 20.

[0054] When the silica gel desiccant 19 absorbs moisture from the outside air and its weight increases, the air inlet pipe 18 will cause the base plate 20 to move downwards and compress the third spring 22, so that the second triggering mechanism can be triggered subsequently.

[0055] As one embodiment of the present invention, refer to Figure 2 and 4 The second triggering mechanism includes a fourth spring 23. The bottom of the two fourth springs 23 and the bottom of the inner cavity of the adjacent U-shaped frame 21 are both equipped with second contact blocks 24. Alarms 25 are provided on opposite sides of the two U-shaped frames 21. The two alarms 25 are both installed at the bottom of the inner cavity of the converter body 1. The two adjacent second contact blocks 24 are electrically connected to the adjacent alarms 25. An opening mechanism is provided at the bottom of the inner cavity of the converter body 1.

[0056] When the silica gel desiccant 19 absorbs a certain amount of moisture from the air, the weight of the air inlet pipe 18 increases, causing the fourth spring 23 to move downwards via the base plate 20. This causes the two second contact blocks 24 to come into contact. Once the two adjacent second contact blocks 24 come into contact, they will control the adjacent alarm 25 to sound an alarm, thereby alerting the staff.

[0057] As one embodiment of the present invention, refer to Figure 2 , 5 The opening mechanism includes a vertical plate 27, on which a T-shaped rod 29 is slidably connected. A solenoid 28 is installed on the wall of the T-shaped rod 29. Both ends of the solenoid 28 are fixedly connected to the T-shaped rod 29 and the vertical plate 27. A support plate 26 is provided on one side of the vertical plate 27. The support plate 26 is fixedly connected to the converter body 1. A gear 31 is rotatably connected to the front wall of the support plate 26. A second toothed plate 32 and a first toothed plate 30 are respectively meshed at the top and bottom of the gear 31. The second toothed plate 32 is slidably connected to the vertical plate 27. The first toothed plate 30 is fixedly connected to the T-shaped rod 29. Baffles 35 are fixedly connected to the opposing sides of the second toothed plate 32 and the first toothed plate 30. Both baffles 35 are in contact with adjacent bellows 17. A transmission mechanism is provided above the second toothed plate 32.

[0058] When the energized solenoid 28 is turned on, it can retract and drive the first toothed plate 30 to the right through the T-shaped rod 29, which in turn drives the gear 31 to rotate. This causes the second toothed plate 32 to move to the left. At this time, the first toothed plate 30 and the second toothed plate 32 move closer to each other and drive the adjacent baffle 35 away from the adjacent bellows 17, so as to facilitate the subsequent introduction of external gas.

[0059] As one embodiment of the present invention, refer to Figure 2 , 57. The transmission mechanism includes a rotating rod 33, which is rotatably connected to the inner wall of the converter body 1. Both the rod wall of the rotating rod 33 and the front wall of the support plate 26 are equipped with bevel gears 34. The two bevel gears 34 mesh with each other. Both the gear 31 and the shaft of the rear bevel gear 34 are equipped with grooved wheels. A belt is connected between the two grooved wheels. Both filter screens 16 are equipped with dust removal mechanisms.

[0060] When gear 31 rotates, it drives the upper bevel gear 34 to rotate via the belt. The cooperation of the two bevel gears 34 drives the rotating rod 33 to rotate, thus achieving the purpose of transmission.

[0061] As one embodiment of the present invention, refer to Figure 2 and 4 The dust removal mechanism includes brush plates 38, both brush plates 38 are rotatably connected to adjacent filter screens 16, both brush plates 38 are in contact with adjacent filter screens 16, and small gears 37 are fixedly connected to the rotating shafts of both brush plates 38. Large gears 36 are meshed on the top of both small gears 37, and both large gears 36 are fixedly connected to the rotating rod 33.

[0062] The rotation of the rotating rod 33 drives the small gear 37 to rotate through the large gear 36, thereby causing the brush plate 38 to rotate and clean the impurities on the surface of the filter screen 16, achieving the purpose of preventing clogging.

[0063] As one embodiment of the present invention, refer to Figure 2 and 3 The top of the slide plate 13 and the top of the inner cavity of the fixed frame 5 are both equipped with third contact blocks 14. The two third contact blocks 14 are electrically connected to the energized solenoid 28 and the two second fans 39.

[0064] When the temperature inside the converter body 1 increases, the air bag 6 will continue to expand, which will cause the second spring 11 to move upward and push the slide plate 13 to make the two third contact blocks 14 contact each other, thereby turning on the energized solenoid 28 and the two second fans 39 for subsequent operation.

[0065] As one embodiment of the present invention, refer to Figure 6 An exhaust pipe 40 is fixedly connected to one side of the top of the converter body 1. The exhaust pipe 40 is connected to the inside of the converter body 1. A stop plate 41 is movably connected to the inner wall of the exhaust pipe 40. A fifth spring 42 is installed between the top of the stop plate 41 and the inner wall of the exhaust pipe 40.

[0066] When the first fan 2 is turned on, the gas inside the converter body 1 can be drawn into the exhaust pipe 3. Through the setting of the heat sink 4, the hot gas passing through the exhaust pipe 3 can be cooled down. The cooled gas will flow back into the converter body 1. At this time, the pressure inside the converter body 1 is constant. The fifth spring 42 is in the initial state and keeps the abutment 41 against the inner wall of the exhaust pipe 40, so that the internal gas can be recycled for cooling.

[0067] When the second fan 39 is turned on, it draws in outside air. The air is filtered through the filter screen 16 and enters the sleeve 15. Then, it passes through the bellows 17 and the air inlet pipe 18 and is discharged into the converter body 1. Since the pressure inside the converter body 1 is constant, the introduction of outside air will increase the pressure inside the converter body 1. At this time, the air inside the converter body 1 will move upward through the air outlet pipe 40. The air will then squeeze the fifth spring 42 through the abutment plate 41. This will cause the abutment plate 41 to deflect, opening the air outlet pipe 40. This will allow the air inside the converter body 1 to be discharged outward, achieving the purpose of exhaust and effectively improving the cooling efficiency inside the converter body 1.

[0068] Working principle: When the temperature inside the converter body 1 gradually rises, the heat-conducting plate 7 transfers the temperature inside the converter body 1 to the air bag 6 through the heat-conducting rod 8. This allows the air bag 6 to expand, causing the top plate 9 to move upward and squeeze the first spring 10, which in turn causes the second spring 11 to move upward, making the two first contact blocks 12 come into contact. At this time, the first fan 2 will be turned on. When the first fan 2 is turned on, the gas inside the converter body 1 can be drawn into the exhaust pipe 3. Through the setting of the heat sink 4, the hot gas passing through the exhaust pipe 3 can be cooled down. The cooled gas will flow back into the converter body 1.

[0069] If the temperature inside the converter body 1 continues to rise, the airbag 6 will continue to expand, causing the second spring 11 to move upward and push the slide plate 13 so that the two third contact blocks 14 come into contact. This activates the energized solenoid 28 and the second fan 39. The energized solenoid 28 retracts, driving the first toothed plate 30 to move to the right via the T-shaped rod 29, which in turn drives the gear 31 to rotate, causing the second toothed plate 32 to move to the left. At this time, the first toothed plate 30 and the second toothed plate 32 move closer to each other, causing the adjacent baffle 35 to move away from the adjacent bellows 17. The second fan 39 then draws in outside air through the bellows 17. The outside air is filtered through the filter screen 16 and enters the sleeve 15, then through the bellows 17 into the intake pipe 18. When the outside air is humid, the silica gel desiccant 19 can absorb the moisture in the humid air and... After filtration and drying, the gas is discharged into the converter body 1. At this time, the introduction of external gas will increase the pressure inside the converter body 1. The gas inside the converter body 1 will move upward through the outlet pipe 40, and the gas will squeeze the fifth spring 42 through the abutment plate 41. At this time, the abutment plate 41 will deflect, making the outlet pipe 40 open, and the gas inside the converter body 1 can be discharged outward. When the silica gel desiccant 19 absorbs moisture from the outside air and its weight increases, the air inlet pipe 18 will drive the base plate 20 to move downward and squeeze the third spring 22. When the silica gel desiccant 19 absorbs moisture from the air to a certain extent, the weight of the air inlet pipe 18 will increase and drive the fourth spring 23 to move downward through the base plate 20, so that the two second contact blocks 24 come into contact. After the two adjacent second contact blocks 24 come into contact, they will control the adjacent alarm 25 to sound an alarm.

[0070] When gear 31 rotates, it drives the upper bevel gear 34 to rotate via belt. The cooperation of the two bevel gears 34 drives the rotating rod 33 to rotate. The rotation of the rotating rod 33 drives the small gear 37 to rotate via the large gear 36, thereby causing the brush plate 38 to rotate to clean the impurities on the surface of the filter screen 16.

[0071] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power via transformers. The main controller can be a conventional known device such as a computer for control. The product models provided in this invention are only for use based on the structural features of the product in this technical solution. The product will be adjusted and modified after purchase to better match and conform to the technical solution of this invention. It is an optimal application of this technical solution. The product models can be replaced and modified according to the required technical parameters. This is well known to those skilled in the art. Therefore, those skilled in the art can clearly obtain the corresponding usage effects through the technical solution provided by this invention.

[0072] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A DC microgrid converter, comprising: A converter body (1) is provided, with a first fan (2) mounted on its top. Two exhaust pipes (3) are connected to the top of the first fan (2), and the other ends of the two exhaust pipes (3) penetrate the side wall of the converter body (1). Multiple sets of heat sinks (4) are evenly installed on the walls of the two exhaust pipes (3). The converter body (1) is characterized by a thermal expansion mechanism fitted to its top. The thermal expansion mechanism includes a fixed frame (5), with an airbag (6) installed at the bottom of the inner cavity of the fixed frame (5). The bottom of the fixed frame (5) is equipped with... A heat-conducting plate (7) is provided, and heat-conducting rods (8) are evenly installed on the top of the heat-conducting plate (7). The top of each group of heat-conducting rods (8) passes through the fixed frame (5) and the airbag (6) and extends into the airbag (6). A top plate (9) is fixedly connected to the top of the airbag (6). The top plate (9) is slidably connected to the inner wall of the fixed frame (5). A first spring (10) is installed on the top of the top plate (9). The top of the first spring (10) is fixedly connected to the top of the inner cavity of the fixed frame (5). A first triggering mechanism is provided on the top of the top plate (9). The first triggering mechanism includes a second spring (11), which is fixedly connected to the top plate (9). A sliding plate (13) is provided above the second spring (11), and the sliding plate (13) is slidably connected to the inner wall of the fixed frame (5). A first contact block (12) is fixedly connected to the top of the second spring (11) and the bottom of the sliding plate (13). The two first contact blocks (12) are electrically connected to the first fan (2). A filter mechanism is installed at the bottom of both sides of the converter body (1). The air filtration mechanism includes a sleeve (15), and a filter screen (16) is installed at the opposite ends of the two sleeves (15). Two corrugated pipes (17) are provided on the opposite sides of the two sleeves (15). The two sleeves (15) are fixedly connected to the adjacent corrugated pipes (17). An air inlet pipe (18) is installed between the two adjacent corrugated pipes (17). Silica gel desiccant (19) is installed inside the two air inlet pipes (18). The two inner corrugated pipes (17) are installed at the bottom of the inner cavity of the converter body (1). A second fan (39) is installed inside the two inner corrugated pipes (17). An elastic support mechanism is provided below the two air inlet pipes (18). The elastic support mechanism includes a U-shaped frame (21), both U-shaped frames (21) are fixedly connected to the bottom of the inner cavity of the converter body (1), and a base plate (20) is slidably connected to the inner wall of both U-shaped frames (21). The top of both base plates (20) is in contact with the bottom of the adjacent air intake pipe (18). Two third springs (22) are fixedly connected to the bottom of both base plates (20), and the bottom ends of both third springs (22) are fixedly connected to the adjacent U-shaped frame (21). A second triggering mechanism is provided on one side of the bottom of both base plates (20). The second triggering mechanism includes a fourth spring (23), and a second contact block (24) is installed at the bottom of the two fourth springs (23) and at the bottom of the inner cavity of the adjacent U-shaped frame (21). An alarm (25) is provided on the opposite side of the two U-shaped frames (21). The two alarms (25) are installed at the bottom of the inner cavity of the converter body (1). The two adjacent second contact blocks (24) are electrically connected to the adjacent alarms (25). An opening mechanism is provided at the bottom of the inner cavity of the converter body (1). The opening mechanism includes a vertical plate (27), on which a T-shaped rod (29) is slidably connected. A solenoid (28) is installed on the wall of the T-shaped rod (29). Both ends of the solenoid (28) are fixedly connected to the T-shaped rod (29) and the vertical plate (27). A support plate (26) is provided on one side of the vertical plate (27). The support plate (26) is fixedly connected to the converter body (1). A gear (31) is rotatably connected to the front wall of the support plate (26). The top and bottom of the gear (31) are respectively meshed with a second tooth plate (32) and a first tooth plate (30). The second tooth plate (32) is slidably connected to the vertical plate (27). The first tooth plate (30) is fixedly connected to the T-shaped rod (29). Baffles (35) are fixedly connected to the opposing sides of the second tooth plate (32) and the first tooth plate (30). Both baffles (35) are in contact with the adjacent bellows (17). A transmission mechanism is provided above the second tooth plate (32).

2. The DC microgrid converter of claim 1, wherein: The transmission mechanism includes a rotating rod (33), which is rotatably connected to the inner wall of the converter body (1). Both the rod wall of the rotating rod (33) and the front wall of the support plate (26) are equipped with bevel gears (34). The two bevel gears (34) mesh with each other. Both the gear (31) and the shaft of the rear bevel gear (34) are equipped with grooved wheels. The two grooved wheels are connected by a belt. Both filters (16) are equipped with dust removal mechanisms.

3. The DC microgrid converter of claim 2, wherein: The dust removal mechanism includes brush plates (38), both brush plates (38) are rotatably connected to the adjacent filter screen (16), both brush plates (38) are in contact with the adjacent filter screen (16), small gears (37) are fixedly connected to the rotating shafts of both brush plates (38), large gears (36) are meshed at the top of both small gears (37), and both large gears (36) are fixedly connected to the rotating rod (33).

4. A DC microgrid converter according to claim 1, characterized in that: The top of the slide plate (13) and the top of the inner cavity of the fixed frame (5) are both equipped with third contact blocks (14), and the two third contact blocks (14) are electrically connected to the energized solenoid (28) and the two second fans (39).

5. The DC microgrid converter of claim 1, wherein: An exhaust pipe (40) is fixedly connected to one side of the top of the converter body (1). The exhaust pipe (40) is connected to the inside of the converter body (1). A stop plate (41) is movably connected to the inner wall of the exhaust pipe (40). A fifth spring (42) is installed between the top of the stop plate (41) and the inner wall of the exhaust pipe (40).

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