A communication mechanism and cabinet

Abstract

This application relates to a communication mechanism and a cabinet. The communication mechanism includes a first channel section, a second channel section, and a first guide member. The first channel section has a first inlet, a first outlet, and a liquid storage section. The first inlet and the first outlet are both located above the liquid storage section, and the first outlet communicates with the second channel section. The first guide member is at least partially located within the first channel section and is positioned above the first outlet. The first guide member includes a first end and a second end. The first end faces the second channel section, and the second end is located away from the second channel section. The height of the second end is lower than the height of the first end. The communication mechanism improves the waterproof performance of the cabinet, effectively dissipates heat from the components inside the cabinet to enhance reliability, reduces the probability of malfunctions, and improves safety.

Description

Technical Field

[0001] This application relates to the field of electrical cabinet technology, specifically to a communication mechanism and cabinet. Background Technology

[0002] Server racks, serving as carriers for various electrical components, are widely used in industries such as power, industrial automation, and communications. The electronic components inside the rack generate a significant amount of heat during operation, requiring timely heat dissipation to improve overall operational stability.

[0003] In the cabinet of an inverter, the inverter needs to be connected to external transformers and other devices through busbars and other busbar connection structures. These busbar connection structures have heat dissipation and waterproofing requirements. If the busbar connection structure is cooled by cooling air, it is easy for the busbar connection structure to come into contact with water in the cooling air, which can cause short circuits, arcing and burn-out problems. Utility Model Content

[0004] The purpose of this application is to provide a connection mechanism and cabinet that can effectively dissipate heat from the components inside the cabinet through cooling air to improve reliability, while also improving waterproof performance, reducing the probability of failure, and enhancing safety.

[0005] This application provides a communication mechanism, including a first channel portion, a second channel portion, and a first guide member; the first channel portion is provided with a first inlet, a first outlet, and a liquid storage portion, the first inlet and the first outlet are both located above the liquid storage portion, and the first outlet communicates with the second channel portion; the first guide member is at least partially located within the first channel portion and is located above the first outlet, the first guide member includes a first end and a second end, the first end is disposed towards the second channel portion, the second end is disposed away from the second channel portion, and the height of the second end is lower than the height of the first end.

[0006] In some embodiments, the first guide member is provided with at least one first bending structure, such that the first guide member includes at least two first guide segments.

[0007] In some embodiments, the first end is located within the second channel portion and is connected to the top wall of the second channel portion.

[0008] In some embodiments, the communication mechanism further includes a first blocking member disposed at the bottom of the first outlet and extending toward the first channel portion.

[0009] In some embodiments, the communication mechanism further includes a second guide member disposed on the second bottom wall of the second channel portion; the second guide member includes a third end and a fourth end, the third end being disposed toward the first channel portion, the fourth end being disposed away from the first channel portion, and the height of the fourth end being higher than the height of the third end.

[0010] In some embodiments, the third end is connected to or integrally formed with the first blocking member.

[0011] In some embodiments, the second channel portion is provided with a second outlet, and the communication mechanism further includes a second blocking member, which is disposed on the second bottom wall of the second channel portion and located on the second outlet side.

[0012] In some embodiments, the extension direction of the second blocking member is perpendicular to the axial direction of the second channel portion.

[0013] In some embodiments, a first wall portion is formed on the side of the first channel portion away from the second channel portion, and a second wall portion is formed on the side of the first channel portion facing the second channel portion. The first channel portion also includes a first bottom wall. A first guide surface is provided between the first wall portion and the first bottom wall, and a second guide surface is provided between the second wall portion and the first bottom wall. The distance between the first guide surface and the second guide surface gradually decreases from top to bottom.

[0014] In some embodiments, the first bottom wall is further provided with a drain outlet, the drain outlet including at least one of a first drain hole and a second drain hole, the first drain hole being disposed at the connection between the second guide surface and the first bottom wall, and the cross-sectional area of ​​the second drain hole being larger than the cross-sectional area of ​​the first drain hole.

[0015] In some embodiments, the second channel portion is provided with a second outlet, and the second outlet extends outward in the circumferential direction with a flange structure, and the flange structure is provided with a plurality of fixing holes at intervals in the circumferential direction.

[0016] This application also provides a cabinet, including a first cabinet body and a communication mechanism as described above, wherein a second channel portion of the communication mechanism is connected to a first air inlet of the first cabinet body.

[0017] In some embodiments, the cabinet further includes a second cabinet, and the first inlet of the communication mechanism is connected to a second air outlet of at least one of the second cabinets.

[0018] In some embodiments, a sealing element is also sandwiched between the second channel portion and the first cabinet body along the circumference of the first air inlet.

[0019] The connection mechanism and cabinet provided in this application have the following technical advantages:

[0020] Due to the function of the first guide member, the flow path and flow time of the heat dissipation air in the first channel section can be extended, reducing the probability that the heat dissipation air will directly carry water droplets into the second channel section from the first outlet after entering the first channel section from the first inlet. This is conducive to the water droplets mixed in the heat dissipation air falling into the liquid storage section, thereby reducing the moisture carried by the heat dissipation air into the second channel section and improving the waterproof effect.

[0021] When this connecting mechanism is applied to the air inlet of the cabinet, it effectively reduces the moisture content in the cooling air entering the cabinet. This allows for effective heat dissipation of the electrical components inside the cabinet while improving waterproofing. It also reduces the probability of short circuits, arcing, and other malfunctions caused by water droplets contacting the electrical components, thus enhancing safety. Furthermore, the connecting mechanism effectively improves waterproofing performance, eliminating the need for a sealed cabinet structure. Cooling of the internal electrical components is achieved through air intake at the air inlet, resulting in better heat dissipation. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the communication mechanism provided in the embodiments of this application;

[0023] Figure 2 This is a schematic diagram of the internal structure of the connecting mechanism in one embodiment;

[0024] Figure 3 This is a schematic diagram of the structure of the first guide member in one embodiment;

[0025] Figure 4 This is a schematic diagram of the structure of the first guide member in another embodiment;

[0026] Figure 5 This is a structural schematic diagram of the second guide member and the first blocking member;

[0027] Figure 6 This is a schematic diagram of the internal structure of the connecting mechanism in another embodiment;

[0028] Figure 7 This is a schematic diagram of the cabinet structure provided in the embodiments of this application;

[0029] Figure 8 yes Figure 7 Internal structure diagram;

[0030] Figure 9 Yes, yes Figure 7 A sectional view;

[0031] Figure 10 This is a structural diagram of an embodiment where the cabinet includes two second cabinets;

[0032] Figure 11 This is a structural diagram of another embodiment where the cabinet includes two second cabinets.

[0033] Appendix Figures 1-11 The reference numerals in the attached figures are explained as follows:

[0034] 10 Connecting mechanism; 20 First cabinet, 201 First air inlet; 30 Second cabinet, 301 Second air inlet, 302 Second air outlet, 303 Filter element; 40 Sealing element;

[0035] 1 First channel section, 11 First inlet, 12 First outlet, 13 Liquid storage section, 14 First wall section, 15 Second wall section, 16 First bottom wall, 17 First guide surface, 18 Second guide surface, 19 Drain outlet, 191 First drain hole, 192 Second drain hole, 110 Connection point;

[0036] 2 Second passage section, 21 Top wall, 22 Second bottom wall, 23 Second exit;

[0037] 3 First guide member, 31 First end, 32 Second end, 33 First bending structure, 34 First guide segment;

[0038] 4. Second guide member; 41. Third end; 42. Fourth end;

[0039] 5. First blocking component;

[0040] 6. Second blocking component;

[0041] 7. Flanged structure, 71 fixing holes;

[0042] 8 supports;

[0043] 9. Second bending structure. Detailed Implementation

[0044] To enable those skilled in the art to better understand the technical solutions of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] Server racks, serving as carriers for various electrical components, are widely used in industries such as power, industrial automation, and communications. The electronic components inside generate a significant amount of heat during operation. If this heat cannot be dissipated effectively and promptly, it will lead to decreased component performance, shortened lifespan, and even malfunctions, affecting the normal operation of the entire system.

[0046] In the cabinet of an inverter, the inverter needs to be connected to external transformers and other devices through busbars and other busbar connection structures. These busbar connection structures have heat dissipation and waterproofing requirements. If the busbar connection structure is cooled by cooling air, it is easy for the busbar connection structure to come into contact with water in the cooling air, which can cause short circuits, arcing and burn-out problems.

[0047] This application provides a connecting mechanism and a cabinet. The connecting mechanism can be installed at the air inlet of the cabinet. External cooling air can enter the cabinet through the air inlet and the connecting mechanism to cool the electrical components inside the cabinet. In addition, the connecting mechanism can also effectively improve the waterproof capability of the cabinet.

[0048] like Figure 1 and Figure 2 As shown, the connecting mechanism 10 includes a first channel section 1 and a second channel section 2 connected together. The first channel section 1 has a first inlet 11, a first outlet 12, and a liquid storage section 13. The liquid storage section 13 is located at the bottom of the first channel section 1, and the first inlet 11 and the first outlet 12 are both located above the liquid storage section 13. The second channel section 2 is connected to the first outlet 12. The first channel section 1 and the second channel section 2 are respectively provided with flow channels. External cooling air can enter the first channel section 1 through the first inlet 11 and enter the second channel section 2 through the first outlet 12. The first channel section 1 and the second channel section 2 form an L-shaped structure.

[0049] The connecting mechanism 10 also includes a first guide 3, which is at least partially located within the first channel portion 1 and at the top of the first outlet 12. The first guide 3 can be located at the upper edge of the first outlet 12 or above the first outlet 12. The first guide 3 includes a first end portion 31 and a second end portion 32. The first end portion 31 is disposed towards the second channel portion 2, and the second end portion 32 is disposed away from the second channel portion 2. The height of the second end portion 32 is lower than that of the end of the first channel portion 1.

[0050] The cooling air entering the first channel section 1 through the first inlet 11 can enter the second channel section 2 through the first outlet 12. During this process, the cooling air will be guided by the first guide member 3. When it flows along the first channel section 1, it will first flow away from the first outlet 12 (i.e. away from the second channel section 2). The water droplets contained in the cooling air will fall into the liquid storage section 13 located below under the action of gravity. Then the cooling air will enter the second channel section 2 through the first outlet 12.

[0051] Due to the function of the first guide member 3, the flow path and flow time of the heat dissipation air in the first channel section 1 can be extended, reducing the probability that the heat dissipation air will directly carry water droplets into the second channel section 2 through the first outlet 12 after entering the first channel section 1 from the first inlet 11. This is beneficial for the water droplets mixed in the heat dissipation air to fall into the liquid storage section 13, thereby reducing the moisture carried by the heat dissipation air into the second channel section 2 and improving the waterproof effect.

[0052] When the connecting mechanism 10 is applied to the air inlet of the cabinet, it can effectively reduce the moisture content in the cooling air entering the cabinet through the air inlet. This achieves effective heat dissipation for the electrical components inside the cabinet while improving waterproofing, reducing the probability of short circuits, arcing, and other malfunctions caused by contact with water droplets, and improving safety. Furthermore, the connecting mechanism 10 effectively enhances waterproofing performance, eliminating the need for a sealed cabinet structure. Heat dissipation of the internal electrical components is achieved through air intake at the air inlet, resulting in better heat dissipation.

[0053] like Figure 3 and Figure 4 As shown, the first guide member 3 is provided with at least one first bending structure 33, and the first guide member 3 includes at least two first guide segments 34. Each first guide segment 34 is connected in sequence to form the first guide member 3. Among each first guide segment 34, some of the first guide segments 34 may have the same height at both ends, some of the first guide segments 34 may be inclined, or all of the first guide segments 34 may be inclined. Among the inclined first guide segments 34, the height of the side end facing the second end 32 is lower than the height of the side end facing the first end 31, so that the second end 32 of the first guide member 3 is lower than the first end 31.

[0054] The first guide member 3 achieves a lower height for its second end 32 than for its first end 31 by setting a first bending structure 33, which simplifies the overall structure and molding process and effectively reduces costs. Of course, in this embodiment, the first guide member 3 can also be set as an arc-shaped bending plate, so that the second end 32 is lower than the first end 31.

[0055] like Figure 3 In the illustrated embodiment, the first guide member 3 is provided with a first bending structure 33 and forms two first guide segments 34. The two ends of the first guide segment 34 facing the first end 31 are at the same height, while the first guide segment 34 facing the second end 32 is inclined. The two first guide segments 34 are arranged in a roughly V-shaped structure with an included angle greater than 90°. Figure 4 In the illustrated embodiment, the first guide member 3 is provided with two first bending structures 33, forming three first guide segments 34. The two ends of the first guide segments 34 facing the first end 31 are at the same height, while the two first guide segments 34 facing the second end 32 are inclined. The number, bending angle, and position of the first bending structures 33 are not limited here and can be set according to the actual situation.

[0056] like Figure 2As shown, the first end 31 is located inside the second channel portion 2 and connected to the top wall 21 of the second channel portion 2. The connection between the first end 31 and the top wall 21 of the second channel portion 2 facilitates the installation of the first guide member 3. The first end 31 abuts against the top wall 21 and is connected by bolts, welding, snap-fit, or other methods. The abutment area between the first end 31 and the top wall 21 is relatively large, which can also improve the structural stability of the first guide member 3 in the installed state. Of course, the first guide member 3 can also be connected to the first channel portion 1.

[0057] Alternatively, in this embodiment, the first guide member 3 can be disposed above the first outlet 12 and spaced apart from the first outlet 12 in the height direction, so as to provide a guiding effect for the heat dissipation air entering the first channel section 1 from the first inlet 11 starting from the top of the first outlet 12. When the first guide member 3 is connected to the top wall 21 of the second channel section 2, the heat dissipation air can have a longer path before reaching the first guide member 3, which is conducive to the water droplets in the heat dissipation air falling under the action of gravity, and improving the waterproof performance of the connecting mechanism 10.

[0058] like Figure 2 As shown, the connecting mechanism 10 also includes a first blocking member 5, which is disposed at the bottom of the first outlet 12. It can be located at the bottom edge of the first outlet 12 or below the first outlet 12 and spaced apart from the first outlet 12. The first blocking member 5 extends toward the first channel portion 1.

[0059] After being guided by the first guide member 3, the cooling air flows downward to the side away from the second channel section 2 to the liquid storage section 13, and then flows upward from the bottom of the first channel section 1 to the first outlet 12 and enters the second channel section 2. During this process, the first blocking member 5 extending into the first channel section 1 blocks the cooling air, so that the cooling air on the side of the bottom of the first channel section 1 close to the second channel section 2 bypasses the first blocking member 5 to reach the first outlet 12 and enter the second channel section 2. The first blocking member 5 can prevent the cooling air from carrying water droplets in the liquid storage section 13 when passing the bottom of the first channel section 1. In addition, the first blocking member 5 can also prevent water in the liquid storage section 13 from entering the second channel section 2, thereby improving the waterproof performance.

[0060] like Figure 2As shown, the connecting mechanism 10 also includes a second guide member 4, which is disposed within the second channel portion 2. The second channel portion 2 includes a second bottom wall 22, and the second guide member 4 is disposed within the second bottom wall 22. The second guide member 4 includes a third end 41 and a fourth end 42, wherein the third end 41 is disposed towards the first channel portion 1, and the fourth end 42 is disposed away from the first channel portion 1, with the height of the fourth end 42 being higher than the height of the third end 41. If some water droplets enter the second channel portion 2, they can fall to the bottom of the second channel portion 2 under the action of gravity. These water droplets will flow downwards along the guide surface of the second guide member 4 into the first channel portion 1. The second guide member 4 further blocks and guides the water droplets, reducing the amount of water entering the second channel portion 2 and improving the waterproof performance of the connecting mechanism 10.

[0061] like Figure 2 As shown, when the first guide member 3 is provided with a first bending structure 33 and has an inclined first guide section 34, the inclined first guide section 34 can be arranged parallel to the second guide member 4. The cross-sectional area of ​​the air duct formed between the two changes little, thereby reducing the influence of the air volume passing through the air duct and having a certain guiding effect on the passing air, so that the air flows through the air duct to the upper side of the second channel section 2.

[0062] The third end 41 can be connected to or integrally formed with the first blocking member 5 mentioned above. This design can further simplify the overall structure and the assembly / disassembly process. Figure 5 As shown, the first blocking member 5 and the second guide member 4 can be formed by setting a second bending structure 9 on a guide plate. The second guide member 4 is inclined, and the two ends of the first blocking member 5 are at the same height. The first blocking member 5 can also be inclined, and there is no specific restriction here. The first blocking member 5 and the second guide member 4 are arranged in a V-shape, and the included angle is greater than 90°.

[0063] Alternatively, the first blocking member 5 and the second guide member 4 can be connected by bolts, welding, or other methods. The first blocking member 5 and the second guide member 4 can also be set as independent structures, and they can be spaced apart.

[0064] like Figure 6 As shown, the second channel section 2 is also provided with a second outlet 23, which is located on the side of the second channel section 2 away from the first channel section 1. The connecting mechanism 10 also includes a second blocking member 6, which is provided on the second bottom wall 22 of the second channel section 2 and located on the side of the second outlet 23. The second blocking member 6 can block water entering the second channel section 2 from the side of the second outlet 23, preventing water entering the second channel section 2 from flowing out of the second outlet 23 into the cabinet on the downstream side, thereby further improving the waterproof performance.

[0065] The extension direction of the second blocking member 6 is perpendicular to the axial direction of the second channel portion 2, such as... Figure 6 As shown, when the second channel portion 2 is horizontally arranged, the second blocking member 6 extends along the height direction to block water within the second channel portion 2. Furthermore, with the same volume, the water-blocking effect of the second blocking member 6 is enhanced. Of course, the second blocking member 6 can also be arranged at an angle; no specific limitation is made here.

[0066] The connecting mechanism may include only one of the first blocking member 5 and the second blocking member 6, or it may include both the first blocking member 5 and the second blocking member 6, and the first blocking member 5 and the second blocking member 6 may be arranged at intervals.

[0067] like Figure 6 As shown, the side wall of the first channel portion 1 away from the second channel portion 2 forms a first wall portion 14, and the side wall of the first channel portion 1 facing the second channel portion 2 forms a second wall portion 15. The first channel portion 1 also includes a first bottom wall 16. A first guide surface 17 is provided between the first wall portion 14 and the first bottom, and a second guide surface 18 is provided between the second wall portion 15 and the first bottom wall 16. The distance between the first guide surface 17 and the second guide surface 18 gradually decreases from top to bottom.

[0068] The first guide surface 17 and the second guide surface 18 guide the flow of cooling air. After entering the first channel section 1 through the first inlet 11, the cooling air is guided by the first guide member 3 to flow away from the second channel section 2 to the bottom of the first channel section 1. Then it flows along the first guide surface 17 to the bottom of the first channel section 1, and then along the second guide surface 18 to the first outlet 12 and enters the second channel section 2. The flow path of the cooling air is as follows: Figure 6 As shown by the medium-thick dashed line, it has a U-shaped structure.

[0069] Of course, in this embodiment, the first guide surface 17 and the second guide surface 18 may not be provided. The provision of the first guide surface 17 and the second guide surface 18 can provide guidance for the heat dissipation airflow, making the heat dissipation airflow smoother, reducing turbulence and other issues, reducing flow resistance, reducing the load on the drive fan, etc., and improving economy.

[0070] The first guide surface 17 and the second guide surface 18 can be either inclined or curved surfaces, and there is no restriction here.

[0071] The liquid storage section 13 is also provided with a drain outlet 19, through which water in the liquid storage section 13 can be discharged in a timely manner, reducing the probability that water droplets from the liquid storage section 13 will be carried into the second channel section 2 when the cooling airflow passes through the liquid storage section 13, thus improving the waterproof performance. Due to the arrangement of the first guide surface 17 and the second guide surface 18, the bottom cross-sectional area of ​​the liquid storage section 13 can be relatively small, which facilitates timely drainage through the drain outlet 19.

[0072] The drain outlet 19 includes at least one of a first drain hole 191 and a second drain hole 192. The first drain hole 191 is located at the connection 110 between the second guide surface 18 and the first bottom wall 16, and the second drain hole 192 is located on the first bottom wall 16. The cross-sectional area of ​​the second drain hole 192 is larger than that of the first drain hole 191 to facilitate the drainage of more water from the liquid storage section 13. The number of first drain holes 191 is not limited; multiple first drain holes 191 may be spaced apart along the connection 110 between the first bottom wall 16 and the second guide surface 18 to facilitate the drainage of water at any time. The second drain hole 192 may or may not be equipped with a sealing element.

[0073] The drain outlet 19 may include only the first drain hole 191, or only the second drain hole 192, or the drain outlet 19 may include both the first drain hole 191 and the second drain hole 192.

[0074] The first drain hole 191 is located at the connection 110 between the second guide surface 18 and the first bottom wall 16, which facilitates the timely discharge of some water droplets blocked by the first blocking member 5. To facilitate timely drainage, the first bottom wall 16 can also be inclined, so that the height of the end of the first bottom wall 16 facing the second guide surface 18 is lower than the height of the end facing the first guide surface 17. Of course, in this embodiment, the drain hole 19 can also include a third drain hole, which is located between the first guide surface 17 and the first bottom wall 16.

[0075] The connecting mechanism 10 provided in this embodiment forms an L-shaped airflow path with the first channel 1 and the second channel 2. After the cooling air enters the first channel 1 through the first inlet 11, it flows along the airflow path and is guided by the first guide member 3, the first guide surface 17, the second guide surface 18, and the second guide member 4, forming a path similar to a U-shape. Water droplets mixed in the air will fall into the liquid storage section 13. Due to the blocking effect of the blocking members (i.e., the first blocking member 5 and the second blocking member 6), the water droplets can be prevented from flowing out along the second channel 2. The water droplets accumulate in the liquid storage section 13 and are discharged through the drain outlet 19, thereby realizing the functions of ventilation, water accumulation, and drainage. The structure is simple and the solution is reliable.

[0076] like Figure 6As shown, the connecting mechanism 10 also includes a bracket 8, which is located at the bottom of the first channel section 1 and is used to provide support for the connecting mechanism 10. The height of the bracket 8 can be set according to the actual working conditions. The bracket 8 and the first bottom wall 16 of the first channel section 1 can be connected by bolts, welding, snap-fitting or other means to improve the connection stability.

[0077] like Figure 6 As shown, the second outlet 23 of the second channel section 2 extends outward in the circumferential direction and is provided with a flange structure 7. The flange structure 7 is provided with a plurality of fixing holes 71 at intervals in the circumferential direction. During installation, the flange structure 7 can be abutted against the cabinet, so that the second channel section 2 is connected to the air inlet of the cabinet. Then, it is fixed to the cabinet by fasteners passing through the fixing holes 71, realizing the installation operation between the connecting mechanism 10 and the cabinet. Of course, in this embodiment, there is no limitation on the installation method of the connecting mechanism 10. For example, it can also be fixed by snap-fit, welding, etc. However, by abutting the flange structure 7 against the cabinet and fixing it with fasteners, the installation operation can be simplified and the installation stability can be ensured. At the same time, it is also convenient to disassemble the connecting mechanism 10 for easy maintenance later.

[0078] This application also provides a cabinet, such as Figure 7 and Figure 8 As shown, the cabinet includes a first cabinet body 20 and a connecting mechanism 10 as described above. The first cabinet body 20 is provided with a first air inlet 201, and the second channel portion 2 of the connecting mechanism 10 is connected to the first air inlet 201. Cooling air enters the first channel portion 1 of the connecting mechanism 10 through the first inlet 11, and then enters the first cabinet body 20 through the second channel portion 2 and the first air inlet 201, cooling the electrical components located in the first cabinet body 20. During this process, as the cooling air passes through the connecting mechanism 10, the water droplets contained inside will fall into the liquid storage portion 13 at the bottom of the first channel portion 1 under the action of gravity, reducing the amount of water entering the first cabinet body 20 through the first air inlet 201 and improving the waterproof performance.

[0079] If electrical components are placed inside the first cabinet 20, these components will generate a lot of heat during operation. They need to be cooled by the cooling air entering the first cabinet 20 through the first air inlet 201. By setting up the connecting mechanism 10, the electrical components can be cooled by the external cooling air, while the amount of moisture entering the first cabinet 20 can be reduced. This reduces the risk of short circuits or even arcing and burning out due to contact between the electrical components and water, thus improving safety.

[0080] Furthermore, due to the arrangement of the connecting mechanism 10, compared to the solution of setting a sealed cavity to meet waterproof requirements, it is possible to cool the electrical components inside the first cabinet 20 by external air while meeting waterproof performance requirements, resulting in better cooling effect and lower economic cost.

[0081] When this cabinet is used in inverter equipment, the inner cavity of the first cabinet 20 can serve as an external circulation cavity. By setting the connecting mechanism 10 at the air inlet of the external circulation cavity, the amount of moisture entering the external circulation cavity can be reduced, thus improving waterproof performance. At this time, the busbar and other busbar connection structures can be directly set in the external circulation cavity. The external circulating cooling air cools the electrical components and busbar and other busbar connection structures located in the first cabinet 20, improving the stability of equipment operation and effectively reducing costs.

[0082] like Figure 8 and Figure 9 As shown, the cabinet may also include a second cabinet 30, which is provided with a second air inlet 301 and a second air outlet 302. The second air inlet 301 is connected to the external environment, and the second air outlet 302 is connected to the first entrance 11 of the first channel section 1 of the connecting mechanism 10. At this time, the connecting mechanism 10 is connected between the first cabinet 20 and the second cabinet 30. The first cabinet 20 has higher requirements for waterproof performance than the second cabinet 30.

[0083] When this cabinet is used in an inverter device, the inner cavity of the second cabinet 30 can serve as an external circulation cavity. The first cabinet 20 contains busbars and other busbar connection structures. The first cabinet 20 and the second cabinet 30 are connected by a connecting mechanism 10. After the external cooling air passes through the second cabinet 30 and cools the electrical components inside the second cabinet 30, it can flow along the connecting mechanism 10 into the first cabinet 20 and cool the busbar connection structures inside the first cabinet 20 before being discharged from the first air outlet of the first cabinet 20.

[0084] The first cabinet 20 is a separate cabinet for cooling the junction connection structure. The connection mechanism 10 effectively improves the waterproof performance of the first cabinet 20. At the same time, the cooling air discharged from the second cabinet 30 cools the junction connection structure inside the first cabinet 20. The fan inside the second cabinet 30 can meet the cooling airflow requirements. The first cabinet 20 does not need to be equipped with additional fans or other components, which can effectively simplify the overall structure and reduce costs.

[0085] like Figure 9 As shown, the second air inlet 301 of the second cabinet 30 is connected to the external environment. A filter 303 can be installed at the second air inlet 301 to improve the cleanliness of the heat dissipation air entering the second cabinet 30.

[0086] When two second cabinets 30 are connected to a first cabinet 20 via the connecting mechanism 10, it can be as follows: Figure 10 As shown, each second cabinet 30 is connected to the first cabinet 20 via a connecting mechanism 10. In this case, the first cabinet 20 is provided with two first air inlets 201, and each second air outlet 302 of the second cabinet 30 is connected to its corresponding first air inlet 201 via a connecting mechanism 10. Alternatively, it can be as follows: Figure 11 As shown, the two second cabinets 30 are connected to the first cabinet 20 through a connecting mechanism 10. At this time, the first cabinet 20 is provided with a first air inlet 201, and the second air outlets 302 of the two second cabinets 30 are simultaneously connected to the first air inlet 201 of the first cabinet 20 through a connecting mechanism 10.

[0087] When there is only one first cabinet 20 and one second cabinet 30, the first cabinet 20 and the second cabinet 30 are connected by a connecting mechanism 10. When one first cabinet 20 is connected to two or more second cabinets 30, the number of connecting mechanisms 10 can be set according to the actual situation. For example, if return air is not considered, only one connecting mechanism 10 can be set. If return air is considered, and the pressure, temperature and other conditions in different second cabinets 30 are different, the second air outlet 302 of each second cabinet 30 can be connected to the first inlet 11 of different connecting mechanisms 10 to reduce the mutual influence between different second cabinets 30 due to return air.

[0088] A sealing element 40 may be sandwiched between the second channel section 2 and the first cabinet 20 along the circumferential direction. The sealing element 40 may be a sealing ring, sealing foam, sealing strip, etc., to achieve sealing at the first air inlet 201 of the first cabinet 20, thereby improving the cleanliness and waterproofness of the first cabinet 20.

[0089] The flange structure 7 arranged circumferentially at the second outlet 23 of the second channel section 2 can be connected to the first cabinet 20 by fasteners. A sealing element 40 can be sandwiched between the flange structure 7 and the first cabinet 20. The sealing element 40 is arranged circumferentially along the first air inlet 201. Similarly, the first inlet 11 of the first channel section 1 can also be provided with a flange structure 7 extending outward circumferentially. The flange structure 7 is provided with a plurality of fixing holes 71 spaced apart circumferentially and is connected to the second air outlet 302 of the second cabinet 30 by fasteners. In addition, in order to consider waterproof sealing performance, a sealing element can also be provided circumferentially between the flange structure 7 and the second cabinet 30 along the second air outlet 302.

[0090] In the description of this application, 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", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0091] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0092] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A communication mechanism, characterized by, It includes a first channel section (1), a second channel section (2), and a first guide member (3); The first channel section (1) is provided with a first inlet (11), a first outlet (12) and a liquid storage section (13). The first inlet (11) and the first outlet (12) are both located above the liquid storage section (13), and the first outlet (12) is connected to the second channel section (2). The first guide (3) is at least partially located inside the first channel portion (1) and at the top of the first outlet (12). The first guide (3) includes a first end (31) and a second end (32). The first end (31) is disposed toward the second channel portion (2), and the second end (32) is disposed away from the second channel portion (2). The height of the second end (32) is lower than the height of the first end (31).

2. The communication mechanism according to claim 1, wherein, The first guide member (3) is provided with at least one first bending structure (33), such that the first guide member (3) includes at least two first guide segments (34).

3. The communication mechanism of claim 1, wherein, The first end (31) is located inside the second channel portion (2) and is connected to the top wall (21) of the second channel portion (2).

4. The communication mechanism according to any one of claims 1-3, characterized in that, The communication mechanism also includes a first blocking member (5), which is located at the bottom of the first outlet (12) and extends toward the first channel (1).

5. The communication mechanism of claim 4, wherein, The communication mechanism further includes a second guide (4), which is disposed on the second bottom wall (22) of the second channel portion (2). The second guide (4) includes a third end (41) and a fourth end (42). The third end (41) is disposed toward the first channel portion (1), and the fourth end (42) is disposed away from the first channel portion (1). The height of the fourth end (42) is higher than the height of the third end (41).

6. The communication mechanism of claim 5, wherein, The third end (41) is connected to or integrally formed with the first blocking member (5).

7. The connecting mechanism according to any one of claims 1-3, characterized in that, The second channel section (2) is provided with a second outlet (23), and the communication mechanism further includes a second blocking member (6), which is provided on the second bottom wall (22) of the second channel section (2) and located on the side of the second outlet (23).

8. The communication mechanism of claim 7, wherein, The extension direction of the second blocking member (6) is perpendicular to the axial direction of the second channel portion (2).

9. The communication mechanism according to any one of claims 1-3, wherein, The first channel portion (1) forms a first wall portion (14) on the side wall portion away from the second channel portion (2), and forms a second wall portion (15) on the side wall portion facing the second channel portion (2). The first channel portion (1) also includes a first bottom wall (16). A first guide surface (17) is provided between the first wall portion (14) and the first bottom wall (16), and a second guide surface (18) is provided between the second wall portion (15) and the first bottom wall (16). The distance between the first guide surface (17) and the second guide surface (18) gradually decreases from top to bottom.

10. The communication mechanism of claim 9, wherein, The first bottom wall (16) is also provided with a drain outlet (19), the drain outlet (19) includes at least one of a first drain hole (191) and a second drain hole (192), the first drain hole (191) is located at the connection (110) between the second guide surface (18) and the first bottom wall (16), and the cross-sectional area of ​​the second drain hole (192) is larger than the cross-sectional area of ​​the first drain hole (191).

11. The communication mechanism according to any one of claims 1-3, wherein, The second channel section (2) is provided with a second outlet (23), and the second outlet (23) extends outward in the circumferential direction with a flange structure (7), and the flange structure (7) is provided with a plurality of fixing holes (71) at intervals in the circumferential direction.

12. A cabinet, characterized by It includes a first cabinet (20) and a communication mechanism as described in any one of claims 1-11, wherein the second channel portion (2) of the communication mechanism is connected to the first air inlet (201) of the first cabinet (20).

13. The cabinet of claim 12, wherein, The cabinet also includes a second cabinet (30), and the first inlet (11) of the communication mechanism is connected to the second air outlet (302) of at least one of the second cabinets (30).

14. The cabinet of claim 12, wherein, A sealing element (40) is also sandwiched between the second channel section (2) and the first cabinet (20) along the circumference of the first air inlet (201).

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