Explosion-proof box and inverter

Abstract

The utility model provides an explosion-proof box and an inverter. The explosion-proof box comprises a box body which is provided with at least one pressure relief area, the box body comprises a machine box and a machine cover, and the machine cover covers the machine box and seals the machine box; wherein the pressure relief area is an area in which at least part of the machine cover is far away from the box body to form the pressure relief opening when the internal pressure of the box body is greater than a safety threshold value; and the at least one buffer assembly is used for absorbing energy in the process that at least part of the machine cover is far away from the box body and releasing the absorbed energy after the pressure relief opening is formed so as to reduce the distance between the at least part of the machine cover far away from the box body and the box body. According to the technical scheme of the utility model, the explosion-proof box can reduce the gap between the machine cover and the cabinet after the inverter is subjected to pressure relief, thereby reducing the safety risk.

Description

Technical Field

[0001] This utility model relates to the field of inverter technology, and more specifically, to an explosion-proof box and an inverter. Background Technology

[0002] Inverters play a crucial role in modern energy conversion systems, especially in solar power systems, where they convert direct current (DC) generated by solar panels into alternating current (AC) for residential or commercial use. However, due to the complex electronic circuitry and high-voltage environment inside inverters, explosion-proof design has become an important aspect of ensuring user safety.

[0003] However, after the inverter is depressurized for explosion protection, a large gap may form between the inverter's cover and the chassis, posing a safety risk. Utility Model Content

[0004] The main purpose of this utility model is to provide an explosion-proof enclosure and inverter to reduce the gap between the cover and the enclosure after the inverter is depressurized, thereby reducing safety risks.

[0005] To achieve the above objectives, this utility model provides an explosion-proof enclosure, comprising: an enclosure body having at least one pressure relief area, the enclosure body including a chassis and a cover, the cover being disposed on the chassis and sealing the chassis; wherein, the pressure relief area is the area where at least a portion of the cover moves away from the enclosure to form a pressure relief port when the internal pressure of the enclosure body exceeds a safety threshold; at least one buffer component for absorbing energy during the process of at least a portion of the cover moving away from the enclosure body, and releasing the absorbed energy after the pressure relief port is formed, so as to reduce the distance between at least a portion of the cover moving away from the enclosure body and the enclosure body.

[0006] Optionally, the buffer assembly includes a mounting element, a resilient energy storage element, and a connector, one of the chassis and the cover being connected to one end of the connector, the connector passing through and being movably disposed relative to the other of the chassis and the cover, the other end of the connector being connected to the mounting element, and the resilient energy storage element being located between the mounting element and the pressure relief area.

[0007] Optionally, the mounting component is located on the side of the chassis away from the cover, one end of the connector is connected to the cover, and the other end of the connector passes through the chassis and is connected to the mounting component.

[0008] Optionally, the elastic energy storage component is located between the chassis and the mounting component, and is connected to the mounting component. The elastic energy storage component is used to provide an elastic force to the cover as it moves closer to the chassis.

[0009] Optionally, the natural length of the flexible energy storage component is less than or equal to the vertical distance between the chassis and the mounting component.

[0010] Optionally, along the circumference of the connector, at least one side of the connector is provided with an elastic energy storage element.

[0011] Optionally, the chassis is provided with through holes, which slide in conjunction with the connectors.

[0012] Optionally, the buffer assembly also includes an anti-detachment component, at least a portion of which is located on the side of the mounting component away from the pressure relief area, and the connector is connected to the anti-detachment component to prevent the mounting component from detaching from the connector.

[0013] Optionally, the anti-detachment component includes an end cap and a connecting post connected to the end cap. The end cap is located on the side of the mounting component away from the housing. The connecting component has a threaded hole, and the connecting post passes through the mounting component and is threadedly connected to the threaded hole.

[0014] Optionally, there are two pressure relief zones, located on opposite sides of the enclosure, with one or more buffer components on each zone.

[0015] Optionally, the cover is provided with at least one pressure relief hole, which is set in accordance with the pressure relief area. The pressure relief hole is connected to the pressure relief port, and the inside of the chassis is connected to the external environment through the pressure relief port and the pressure relief hole.

[0016] According to another aspect of the present invention, the present invention provides an inverter, including the above-mentioned explosion-proof box and an inverter body located inside the explosion-proof box.

[0017] By applying the technical solution of this utility model and setting up a buffer component, when an explosion occurs inside the enclosure and the pressure exceeds the safety threshold, the cover will move away from the enclosure. The buffer component can quickly absorb part of the impact energy, thereby reducing the impact force on the cover. This not only reduces the degree of deformation caused by the impact pressure on the cover, but also acts as a blocking component when the cover tends to fly off, reducing the force of separation between the cover and the enclosure, ensuring that the cover does not fly off the enclosure, effectively avoiding the possibility of explosion fragments injuring users and the surrounding environment, and significantly enhancing the safety performance of the inverter. At the same time, after the impact ends, the buffer component releases the stored kinetic energy, which can pull one side of the blown-out cover back to the position of the enclosure, thereby reducing the gap between the cover and the enclosure and reducing safety risks. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0019] Figure 1 A structural schematic diagram of an embodiment of the explosion-proof box of this utility model is shown;

[0020] Figure 2 It shows Figure 1 A top view of the explosion-proof box;

[0021] Figure 3It shows Figure 1 A bottom view of the explosion-proof box;

[0022] Figure 4 It shows Figure 1 A cross-sectional view of an explosion-proof box (the elastic energy storage component is in its natural state);

[0023] Figure 5 It shows Figure 4 A close-up view of the explosion-proof box;

[0024] Figure 6 It shows Figure 1 Another cross-sectional view of the explosion-proof box (the elastic energy storage component is in a compressed state);

[0025] Figure 7 It shows Figure 6 A close-up view of the explosion-proof box;

[0026] Figure 8 It shows Figure 1 Another cross-sectional view of the explosion-proof box;

[0027] Figure 9 It shows Figure 8 A close-up view of the explosion-proof box;

[0028] Figure 10 It shows Figure 1 A schematic diagram of the exploded enclosure structure;

[0029] Figure 11 It shows Figure 10 A magnified view of a portion of the explosion-proof box.

[0030] The above figures include the following reference numerals:

[0031] 1. Chassis; 2. Cover; 3. Pressure relief area; 4. Through hole; 5. Pressure relief hole; 8. Clearance hole; 10. Buffer assembly; 11. Mounting component; 12. Elastic energy storage component; 13. Connecting component; 14. Anti-detachment component; 141. End cap; 142. Connecting post. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] like Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, an embodiment of this utility model provides an explosion-proof box, which includes: a box body having at least one pressure relief area 3, the box body including a chassis 1 and a cover 2, the cover 2 covering the chassis 1 and sealing the chassis 1; wherein, the pressure relief area 3 is the area where at least a portion of the cover 2 moves away from the box body to form a pressure relief port when the internal pressure of the box body is greater than a safety threshold; at least one buffer component 10 is used to absorb energy during the process of at least a portion of the cover 2 moving away from the box body, and to release the absorbed energy after the pressure relief port is formed, so as to reduce the distance between at least a portion of the cover 2 moving away from the box body and the box body.

[0034] In the above technical solution, by setting up a buffer component, when an explosion occurs inside the enclosure and the pressure exceeds the safety threshold, the cover 2 will move away from the enclosure 1. The buffer component can quickly absorb some of the impact energy, thereby reducing the impact force on the cover. This not only reduces the degree of deformation caused by the impact pressure on the cover 2, but also acts as a blocking component when the cover 2 tends to fly off, reducing the force of separation between the cover 2 and the enclosure 1, ensuring that the cover does not fly off the enclosure 1, effectively avoiding the possibility of explosion fragments injuring users and the surrounding environment, and significantly enhancing the safety performance of the inverter. At the same time, after the impact ends, the buffer component releases the stored kinetic energy, which can pull one side of the blown-open cover 2 back to the position of the enclosure 1, thereby reducing the gap between the cover 2 and the enclosure 1 and reducing safety risks.

[0035] It should be noted that, in the embodiments of this utility model, the security threshold can be set based on the experience of those skilled in the art.

[0036] like Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown in the embodiment of this utility model, the buffer assembly 10 includes a mounting member 11, an elastic energy storage member 12, and a connector 13. One of the chassis 1 and the cover 2 is connected to one end of the connector 13. The connector 13 passes through and is movably disposed relative to the other of the chassis 1 and the cover 2. The other end of the connector 13 is connected to the mounting member 11. The elastic energy storage member 12 is located between the mounting member 11 and the pressure relief area 3.

[0037] In the above technical solution, when an explosion occurs inside the inverter, the impact force on the cover 2 is first transmitted to the elastic energy storage component 12 through the connector 13. At this time, the elastic energy storage component 12 (such as a spring) is compressed, absorbing part of the impact energy. This not only reduces the deformation of the cover 2 but also prevents the cover 2 from flying off. Subsequently, the elastic energy storage component 12 gradually returns to its natural state, releasing the stored energy and providing an elastic force to the cover 2 close to the chassis 1, thereby pulling the cover 2 back to the chassis 1, reducing the gap between the cover and the chassis, and lowering the safety risk. Figure 5As shown in the embodiment of this utility model, the mounting component 11 is located on the side of the chassis 1 away from the cover 2, one end of the connector 13 is connected to the cover 2, and the other end of the connector 13 passes through the chassis 1 and is connected to the mounting component 11.

[0038] With the above settings, when the internal pressure of the inverter rises abnormally to the explosion level, the cover 2 is first impacted and attempts to separate from the chassis 1. The cover 2 moves along with the connector 13 and the mounting piece 11. At this time, the chassis 1 and the mounting piece 11 compress the elastic energy storage component 12. This not only allows the energy to be absorbed by the elastic energy storage component 12, reducing the degree of deformation of the cover 2 caused by the impact pressure, but also prevents the cover 2 from flying off and causing external damage. After the explosive impact energy is absorbed and gradually diminishes, the elastic energy storage component 12 begins to release its stored energy, causing the mounting piece 11 to move away from the chassis 1. In this way, the mounting piece 11 can pull the cover 2 back to a position close to the chassis 1 along with the connector 13, reducing the gap between the cover 2 and the chassis 1 after the explosion. This not only improves the sealing and structural integrity of the inverter, but also reduces the risk of personnel contacting internal live parts, enhancing safety during use.

[0039] Furthermore, the buffer assembly 10 of the explosion-proof box is located on the lower side of the top of the box, eliminating the need to add screws to the outer surface of the cover 2, thus minimizing the impact on the machine's shape and appearance, and making it widely applicable.

[0040] Preferably, in an embodiment of the present invention, the connector 13 passes through and is movably disposed relative to the chassis 1. In this way, the connector 13 can serve as a pre-positioning element for the cover 2 during assembly, simplifying the alignment and fixing steps between the cover 2 and the chassis 1, improving production efficiency, and reducing potential errors in the manufacturing process.

[0041] In one embodiment, the chassis 1 may be connected to one end of the connector 13, which passes through and is movably disposed relative to the cover 2, and the other end of the connector 13 may be connected to the mounting member 11.

[0042] Preferably, in the embodiment of this utility model, the connector 13 is a die-cast part (which can help to pre-fix it to the top surface of the chassis 1 when assembling the cover). The connector 13 is fixed to the cover 2 by welding the two side flanges on the cover 2. The connector 13 is a cylinder with an outer diameter smaller than the diameter of the through hole 4 on the chassis 1, so as to ensure that when the explosion cover 2 is detached from the chassis 1, the buffer assembly 10 can move freely in the through hole 4.

[0043] Preferably, in the embodiment of this utility model, the mounting part 11 is a sheet metal part with a clearance hole 8 in the middle. The sheet metal part is fixed to the lower top of the chassis 1 by the anti-detachment part 14 to ensure that when the spring is compressed to the extreme, it can continue to resist the explosive impact force and hold the cover from flying off.

[0044] like Figure 5 and Figure 7 As shown in the embodiment of this utility model, the elastic energy storage component 12 is located between the chassis 1 and the mounting component 11. The elastic energy storage component 12 is connected to the mounting component 11 and is used to provide the cover 2 with an elastic force to move closer to the chassis 1.

[0045] With the above configuration, when an explosion occurs inside the inverter and the cover 2 separates from the chassis 1 due to the impact force, the elastic energy storage component 12 will be compressed during the energy absorption phase. After the explosion energy is released, the elastic energy storage component 12 returns to its natural state, generating a reverse elastic force that pushes the cover 2 back towards the chassis 1, achieving automatic reset of the cover and reducing or closing the gap between the cover 2 and the chassis 1 after the explosion, thereby reducing safety risks.

[0046] Furthermore, under the elastic force between the chassis 1 and the mounting component 11, the elastic energy storage component 12 helps to maintain the tight fit between the cover 2 and the chassis 1 after the explosion, thereby maintaining the airtightness of the equipment, preventing the influence of the external environment on the internal circuit, and stabilizing the structure of the inverter, avoiding the performance degradation that may result from long-term structural separation.

[0047] Specifically, in the embodiments of this utility model, the elastic energy storage component 12 is connected to the mounting component 11. During the inverter production and assembly process, the pre-assembled state of the elastic energy storage component 12 and the mounting component 11 can simplify the assembly time.

[0048] like Figure 5 As shown in the embodiment of this utility model, the natural length of the elastic energy storage component 12 is less than or equal to the vertical distance between the chassis 1 and the mounting component 11.

[0049] In the above technical solution, by limiting the natural length of the elastic energy storage component 12, it is ensured that it will not be overstretched under normal conditions, nor will it exceed its operating range under compressed conditions. In this way, the elastic energy storage component 12 can remain in a ready state during normal inverter operation, and can quickly respond and absorb impact energy in the event of an explosion.

[0050] Furthermore, the natural length design of the flexible energy storage component 12 takes into account the space constraints inside the chassis 1, avoiding excessive size occupation, ensuring the compactness and optimization of the internal layout of the inverter, which is conducive to improving the overall performance and reliability of the equipment, and also facilitates the maintenance and repair of the equipment.

[0051] In one embodiment, the natural length of the elastic energy storage element 12 can also be greater than the vertical distance between the chassis 1 and the mounting component 11. This allows the elastic energy storage element 12 to be in a slightly pre-compressed state when the cover 2 is fully closed to the chassis 1. This helps improve the response speed of the elastic energy storage element 12, enabling it to absorb impact energy more quickly when the internal pressure of the inverter rises abnormally, thereby more effectively controlling the movement of the cover 2 and preventing it from flying off. Furthermore, the elastic force generated by the pre-compression of the elastic energy storage element 12 helps the cover 2 fit snugly against the chassis 1, maintaining the airtightness of the device and preventing external environmental influences on the internal circuitry. This is particularly important for precision electronic devices such as inverters.

[0052] like Figure 1 , Figures 8 to 11 As shown in the embodiment of this utility model, along the circumference of the connector 13, at least one side of the connector 13 is provided with an elastic energy storage element 12. In this way, when an explosion occurs inside the inverter, the elastic energy storage element 12 can effectively absorb the impact energy at the location of the pressure relief area 3 to prevent the cover 2 from flying off. Subsequently, the elastic energy storage element 12 gradually returns to its natural state, releasing the stored energy and providing an elastic force to the cover 2 close to the chassis 1, thereby pulling the cover 2 back to the chassis 1, reducing the gap between the cover and the chassis, and reducing safety risks.

[0053] Preferably, such as Figure 1 , Figures 8 to 11 As shown, in the embodiments of this utility model, there are multiple elastic energy storage components 12, and at least one elastic energy storage component 12 is provided on both sides of the connector 13.

[0054] In the above technical solution, the arrangement of multiple elastic energy storage components 12 can more evenly distribute the explosive impact force, improving the efficiency and stability of energy absorption. Simultaneously, after the impact energy is released, the multiple elastic energy storage components 12 work together to ensure that the cover 2 is smoothly pulled back to the chassis 1, reducing the gap between the cover 2 and the chassis 1, preventing secondary electric shock accidents, and enhancing the overall safety and stability of the explosion-proof enclosure. Furthermore, a single elastic energy storage component 12 may fail or experience performance degradation under excessive stress in extreme explosion events, while the configuration of multiple elastic energy storage components 12 provides redundancy. Even if some elastic energy storage components 12 are damaged, the remaining elastic energy storage components 12 can still work effectively, ensuring that the critical explosion-proof and rebound functions are not affected, thus improving the reliability of the explosion-proof mechanism.

[0055] In one embodiment, the elastic energy storage element 12 is located on the outer periphery of the connector 13; or, at least one elastic energy storage element 12 is located on one side of the connector 13; or, along the circumference of the connector 13, elastic energy storage elements 12 are provided on three or four sides of the connector 13, etc.

[0056] Preferably, in the embodiments of this utility model, the elastic energy storage element 12 is a spring.

[0057] In one embodiment, the spring can be replaced with a similar material such as rubber, which has the same elasticity, and then attached to the mounting part 11 with adhesive backing.

[0058] like Figure 11 As shown in the embodiment of this utility model, the chassis 1 is provided with a through hole 4, and the through hole 4 is slidably engaged with the connector 13.

[0059] In the above technical solution, the through hole 4 allows the connector 13 to slide freely along the axial direction inside it, so that the connector 13 can move smoothly when an explosion occurs, ensuring the normal compression and release process of the elastic energy storage component 12 (such as a spring), and improving the overall response speed and efficiency of the buffer assembly; at the same time, under the impact of the explosion, the cover 2 may separate from the chassis 1, but due to the sliding fit between the connector 13 and the through hole 4, the movement path of the cover 2 is restricted, avoiding the problem of misalignment between the cover 2 and the chassis 1, and also ensuring that the cover 2 can return to its position along a predetermined path after the explosion, effectively reducing the gap between the cover 2 and the chassis 1 and reducing safety risks.

[0060] Preferably, in the embodiments of this utility model, the connector 13 is welded to the cover 2. When manufacturing the closed cover 2 and the chassis 1, the chassis can be pre-positioned through the connector 13 welded on the cover 2 and the through hole 4 on the chassis 1, thereby improving production efficiency.

[0061] like Figure 11 As shown in the embodiment of the present invention, the buffer assembly 10 further includes an anti-detachment component 14. At least a portion of the anti-detachment component 14 is located on the side of the mounting component 11 away from the pressure relief area 3. The connector 13 is connected to the anti-detachment component 14 to prevent the mounting component 11 from detaching from the connector 13.

[0062] Through the above-described configuration, the addition of the anti-detachment component 14 ensures the stable fixation of the mounting component 11 during an explosion, preventing the mounting component 11 from detaching from the connector 13 and thus avoiding the risk of the buffer assembly 10 failing due to component loosening. This additional fixing measure improves the reliability and safety of the entire explosion-proof buffer structure.

[0063] In one embodiment, the anti-detachment component 14 may be omitted, and the connector 13 may be welded to the anti-detachment component 14.

[0064] Preferably, in the embodiments of this utility model, the anti-detachment component 14 is a screw.

[0065] like Figure 11As shown in the embodiment of this utility model, the anti-detachment component 14 includes an end cap 141 and a connecting post 142 connected to the end cap 141. The end cap 141 is located on the side of the mounting component 11 away from the box body. The connecting component 13 is provided with a threaded hole, and the connecting post 142 passes through the mounting component 11 and is threadedly connected to the threaded hole.

[0066] The above settings ensure that the mounting component 11 will not detach from the connector 13, thereby enhancing the overall structural stability of the buffer assembly 10 and avoiding explosion-proof failure caused by component detachment.

[0067] Preferably, in an embodiment of the present invention, the mounting member 11 is located between the connector 13 and the end cap 141, so that the end cap 141 can press the mounting member 11 onto the connector 13.

[0068] In one embodiment, the mounting member 11 can also be mounted on the outer periphery of the connector 13, the connecting post 142 is connected to the threaded hole, and the end cap 141 is used to prevent the mounting member 11 from coming off the connector 13.

[0069] like Figures 1 to 3 As shown in the embodiment of this utility model, there are two pressure relief areas 3, which are located on both sides of the box body respectively, and each pressure relief area 3 is provided with one or more buffer components 10.

[0070] By distributing the pressure relief zones 3 on both sides of the enclosure, it is possible to ensure that the internal pressure is released evenly from the two opposite sides when an abnormality occurs, avoiding excessive pressure accumulation on one side, reducing the possibility of enclosure deformation, and protecting the integrity of the enclosure and the safety of the internal electronic components. At the same time, one or more buffer components 10 are set on each pressure relief zone 3, which can more effectively absorb impact energy and prevent the cover 2 from flying out due to instantaneous pressure release. In addition, through the synergistic effect of the components, it is ensured that the cover 2 can be quickly pulled back after the explosion energy is released, reducing the gap between the cover 2 and the enclosure 1, reducing the risk of electric shock, and enhancing the overall explosion-proof performance.

[0071] Specifically, such as Figure 1 As shown in the top view of the inverter, by setting buffer components 10 on the weakest sides of the front and rear pressure relief of the enclosure, and fixing the cover 2 to the enclosure 1 with two more screws on the left and right sides relative to the front and rear, a difference in strength is formed on the sides, ensuring that the pressure in the event of an internal explosion can be released first from the weakest sides at the front and rear, preventing the cover 2 from being blown away entirely. Figure 2In the bottom view of the inverter, four buffer components 10 are set, with two buffer components 10 on the front and two on the back. These components transfer part of the explosive impact energy from the front and back to the springs, reducing the degree of deformation caused by the impact pressure on the cover. At the same time, they act as a blocking component when the cover 2 tends to fly off, ensuring that the cover 2 does not fly off the casing 1 and cause accidental injury. In addition, when the explosive pressure is released, the cover 2 is pulled back by the spring compression deformation, reducing the gap between the cover 2 and the casing 1 and reducing the safety risk.

[0072] In one embodiment, a pressure relief zone 3 may also be provided on three sides or one side of the enclosure.

[0073] like Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown in the embodiment of this utility model, in the initial state, the chassis 1 and the cover 2 are locked in a closed state by screws. At this time, the spring in the buffer assembly 10 is in a naturally extended state. When the internal explosion pressure impacts the cover 2, the screws on the front and rear weak sides will inevitably fall off first compared to the left and right reinforced sides. Then, under the influence of the impact force, the cover 2 separates from the front and rear sides of the chassis 1. At this time, the bottom of the buffer assembly 10 begins to move upward with the cover 2. The elastic energy storage component 12 is blocked by the bottom of the chassis 1 and begins to compress and transfer the remaining energy of the explosion impact. At this time, the front and rear sides of the chassis 1 and the cover 2 are in an open state, and the explosion impact force is also released. After the impact ends, the spring releases the stored energy and stretches the cover 2 in the closing direction, reducing or closing the gap between the cover 2 and the chassis 1 caused by the explosion.

[0074] like Figure 9 As shown in the embodiment of this utility model, the cover 2 is provided with at least one pressure relief hole 5, the pressure relief hole 5 is correspondingly provided with the pressure relief area 3, the pressure relief hole 5 is connected to the pressure relief port, and the inside of the casing 1 is connected to the external environment through the pressure relief port and the pressure relief hole 5.

[0075] In the above technical solution, the pressure relief hole 5 corresponds to the pressure relief area 3, which ensures that in the event of an explosion, when the internal pressure exceeds the design threshold, it can quickly connect with the external environment through the pressure relief port and pressure relief hole 5 to achieve pressure balance and rapid release, and prevent the cover 2 from flying out or the casing from breaking due to a sharp increase in internal pressure of the chassis 1.

[0076] Furthermore, through the synergistic effect of the pressure relief hole 5 and the elastic energy storage component 12, the internal explosion pressure is released in a controlled manner, avoiding damage to mechanical parts and personal injury caused by disordered pressure release. At the same time, after the explosion, the cover 2 is pulled back to a safe distance, protecting the internal components and reducing potential threats to the external environment.

[0077] Preferably, in the embodiment of this utility model, the pressure relief hole 5 is located on the periphery of the cover 2, ensuring that the explosive impact is discharged to the outside from the side wing as much as possible, and minimizing the impact on the cover 2.

[0078] like Figure 1 As shown, an embodiment of this utility model provides an inverter, including the aforementioned explosion-proof box and an inverter body located inside the explosion-proof box.

[0079] The inverter described above has all the advantages of the explosion-proof enclosure, which will not be elaborated here.

[0080] As can be seen from the above description, the above embodiments of this utility model achieve the following technical effects: By setting a buffer component, when an explosion occurs inside the casing and the pressure exceeds the safety threshold, the cover will move away from the casing. The buffer component can quickly absorb some of the impact energy, thereby reducing the impact force on the cover. This not only reduces the degree of deformation caused by the impact pressure on the cover, but also acts as a blocking component when the cover tends to fly off, reducing the force of separation between the cover and the casing, ensuring that the cover does not fly off the casing, effectively avoiding the possibility of explosion fragments injuring users and the surrounding environment, and significantly enhancing the safety performance of the inverter. At the same time, after the impact ends, the buffer component releases the stored kinetic energy, which can pull the blown-out side of the cover back to the location of the casing, thereby reducing the gap between the cover and the casing and reducing safety risks.

[0081] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An explosion-proof box, characterized in that, include: The enclosure has at least one pressure relief area (3), the enclosure includes a chassis (1) and a cover (2), the cover (2) covers the chassis (1) and seals the chassis (1); wherein, the pressure relief area (3) is the area where at least a portion of the cover (2) is away from the enclosure to form a pressure relief port when the internal pressure of the enclosure is greater than a safety threshold; At least one buffer component (10) is used to absorb energy as at least a portion of the cover (2) moves away from the housing and to release the absorbed energy after the pressure relief port is formed, thereby reducing the distance between at least a portion of the cover (2) moving away from the housing and the housing.

2. The explosion-proof box according to claim 1, characterized in that, The buffer assembly (10) includes a mounting element (11), an elastic energy storage element (12), and a connector (13). One of the chassis (1) and the cover (2) is connected to one end of the connector (13), which passes through and is movably disposed relative to the other of the chassis (1) and the cover (2). The other end of the connector (13) is connected to the mounting element (11), and the elastic energy storage element (12) is located between the mounting element (11) and the pressure relief area (3).

3. The explosion-proof box according to claim 2, characterized in that, The mounting component (11) is located on the side of the chassis (1) away from the cover (2), one end of the connector (13) is connected to the cover (2), and the other end of the connector (13) passes through the chassis (1) and is connected to the mounting component (11).

4. The explosion-proof box according to claim 3, characterized in that, The elastic energy storage component (12) is located between the chassis (1) and the mounting component (11), and the elastic energy storage component (12) is connected to the mounting component (11). The elastic energy storage component (12) is used to provide the cover (2) with an elastic force that moves closer to the chassis (1).

5. The explosion-proof box according to claim 4, characterized in that, The natural length of the elastic energy storage component (12) is less than or equal to the vertical distance between the chassis (1) and the mounting component (11).

6. The explosion-proof box according to claim 2, characterized in that, Along the circumferential direction of the connector (13), at least one side of the connector (13) is provided with the elastic energy storage element (12).

7. The explosion-proof box according to claim 3, characterized in that, The chassis (1) is provided with a through hole (4), and the through hole (4) is slidably engaged with the connector (13).

8. The explosion-proof box according to any one of claims 2 to 7, characterized in that, The buffer assembly (10) further includes an anti-detachment component (14), at least a portion of which is located on the side of the mounting component (11) away from the pressure relief area (3). The connector (13) is connected to the anti-detachment component (14) to prevent the mounting component (11) from detaching from the connector (13).

9. The explosion-proof box according to claim 8, characterized in that, The anti-detachment component (14) includes an end cap (141) and a connecting post (142) connected to the end cap (141). The end cap (141) is located on the side of the mounting component (11) away from the housing. The connecting component (13) is provided with a threaded hole. The connecting post (142) passes through the mounting component (11) and is threadedly connected to the threaded hole.

10. The explosion-proof box according to any one of claims 1 to 7, characterized in that, There are two pressure relief areas (3), which are located on both sides of the housing respectively, and each pressure relief area (3) is provided with one or more of the buffer components (10).

11. The explosion-proof box according to any one of claims 1 to 7, characterized in that, The cover (2) is provided with at least one pressure relief hole (5), the pressure relief hole (5) is provided in correspondence with the pressure relief area (3), the pressure relief hole (5) is connected to the pressure relief port, and the interior of the chassis (1) is connected to the external environment through the pressure relief port and the pressure relief hole (5).

12. An inverter, characterized in that, It includes the explosion-proof enclosure as described in any one of claims 1 to 11 and the inverter body located inside the explosion-proof enclosure.

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