Heat dissipation cooling system of high-voltage frequency converter

Abstract

The invention provides a high-voltage frequency converter heat dissipation cooling system which comprises a cabinet body and a ventilation assembly, the cabinet body is provided with a top exhaust outlet, a front exhaust outlet and a rear exhaust outlet, the front exhaust outlet and the rear exhaust outlet are formed in the lower middle portion of the cabinet body, and the front exhaust outlet and the rear exhaust outlet are arranged oppositely or in a staggered mode; the ventilation assembly comprises an air chamber, a fan and a plurality of air ducts, one ends of the air ducts are connected with the top exhaust outlet, the front exhaust outlet and the rear exhaust outlet respectively, the other ends of the air ducts are connected with the air chamber, and the fan is arranged in the air chamber and used for conveying air of the cabinet body to the outside through the air ducts and the air chamber. According to the high-voltage frequency converter heat dissipation cooling system disclosed by the invention, the heat dissipation process of the frequency converter can be more uniform, the phenomenon of local overheating is avoided, the failure rate caused by overheating is reduced, and the reliability and stability of the whole system are improved.

Description

Technical Field

[0001] The invention relates to the technical field of inverter heat dissipation, and in particular to a high-voltage inverter heat dissipation cooling system. Background Art

[0002] In the power system, high-voltage inverters will generate a large amount of heat during operation. If this heat cannot be dissipated in time, the internal temperature of the inverter will increase, thereby affecting its electrical performance and service life.

[0003] In the related technology, high-voltage inverters mainly rely on the top exhaust vents for ventilation. However, due to the limitations of the inverter structure and installation environment, the ventilation efficiency of the top exhaust vents is relatively limited, and the heat generated inside the inverter cannot be effectively dissipated, which can easily lead to inverter overheating protection, or even cause fault shutdown, seriously affecting the normal operation of the power system. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art to at least a certain extent. To this end, an embodiment of the present invention proposes a high-voltage inverter cooling and heat dissipation cooling system, which can make the heat dissipation process of the inverter more uniform, avoid local overheating, reduce the failure rate caused by overheating, and improve the reliability and stability of the entire system.

[0005] An embodiment of the present invention provides a high-voltage inverter heat dissipation cooling system including a cabinet and a ventilation component, wherein the cabinet has a top exhaust port, a front exhaust port and a rear exhaust port, wherein the front exhaust port and the rear exhaust port are arranged in the middle and lower part of the cabinet, and the front exhaust port and the rear exhaust port are arranged relative to or staggered; the ventilation component includes an air chamber, a fan and a plurality of air ducts, wherein one end of the plurality of air ducts are respectively connected to the top exhaust port, the front exhaust port and the rear exhaust port, and the other end of the plurality of air ducts is connected to the air chamber, wherein the fan is arranged in the air chamber, and the fan is used to transport the gas of the cabinet to the outdoors through the air duct and the air chamber.

[0006] In summary, the high-voltage inverter heat dissipation cooling system provided by the embodiment of the present invention, by setting the top exhaust vents, front exhaust vents and rear exhaust vents on the cabinet, not only ensures the smoothness of air circulation, but also makes the heat dissipation process more uniform, avoiding the phenomenon of local overheating. And through this internal and external linkage, multi-air vent collaborative heat dissipation method, not only the cooling efficiency of the inverter is significantly improved, but also its normal operation under various complex working conditions is effectively guaranteed, the failure rate caused by overheating is reduced, and the reliability and stability of the entire system are improved.

[0007] In some embodiments, there are two front air outlets, and the two front air outlets are spaced apart in the height direction of the cabinet.

[0008] In some embodiments, there are two rear air outlets, and the two rear air outlets are spaced apart in the height direction of the cabinet.

[0009] In some embodiments, the top air outlet, the front air outlet and the rear air outlet are all provided with filter nets.

[0010] In some embodiments, the ventilation assembly further includes an air outlet grille, and the air outlet grille is disposed at an exhaust port of the air chamber.

[0011] In some embodiments, the cabinet body is divided into a power cabinet and a transformer cabinet, the power cabinet and the transformer cabinet are arranged adjacent to each other, and a heat insulation board is provided between the power cabinet and the transformer cabinet.

[0012] In some embodiments, the thermal insulation board is made of fiberglass or asbestos.

[0013] In some embodiments, the ventilation assembly further includes a thermal insulation layer, and the thermal insulation layer is wrapped around the outside of the air duct.

[0014] In some embodiments, the fans are provided in pairs, the two fans are arranged side by side in the air chamber, and the fans are axial flow fans.

[0015] In some embodiments, a temperature monitoring component is also included, and the temperature monitoring component includes multiple temperature sensors. The multiple temperature sensors are respectively arranged at the air duct, the top exhaust outlet, the front exhaust outlet and the rear exhaust outlet, and the temperature sensor is electrically connected to the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of a high-voltage inverter heat dissipation and cooling system provided by an embodiment of the present invention.

[0017] Figure 2 It is a schematic diagram of the main view of the high-voltage inverter heat dissipation and cooling system provided by an embodiment of the present invention.

[0018] Figure 3 yes Figure 2 The cross-sectional schematic diagram of the high-voltage inverter heat dissipation cooling system is shown at AA.

[0019] Figure 4 yes Figure 2 The cross-sectional schematic diagram of the high-voltage inverter heat dissipation cooling system on BB is shown.

[0020] Reference numerals: 100, high-voltage inverter heat dissipation cooling system; 110, control cabinet; 120, power cabinet; 130, transformer cabinet;

[0021] 10. Cabinet; 11. Top exhaust vent; 12. Front exhaust vent; 13. Rear exhaust vent; 14. Top wall; 15. Front side wall; 16. Rear side wall; 17. Heat insulation board;

[0022] 20. Ventilation assembly; 21. Air chamber; 211. First chamber; 212. Second chamber; 22. Fan; 23. Air duct; 24. Filter; 25. Air outlet grille; 26. Insulation layer;

[0023] 30. Temperature monitoring component; 31. Temperature sensor. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0025] like Figures 1 to 4 As shown, an embodiment of the present invention provides a high-voltage inverter heat dissipation and cooling system 100, which includes a cabinet 10 and a ventilation assembly 20. The cabinet 10 has a top exhaust port 11, a front exhaust port 12, and a rear exhaust port 13. The front exhaust port 12 and the rear exhaust port 13 are arranged in the middle and lower part of the cabinet 10, and the front exhaust port 12 and the rear exhaust port 13 are arranged relative to or staggered. The ventilation assembly 20 includes an air chamber 21, a fan 22, and a plurality of air ducts 23. One end of the plurality of air ducts 23 is respectively connected to the top exhaust port 11, the front exhaust port 12, and the rear exhaust port 13, and the other end of the plurality of air ducts 23 is connected to the air chamber 21. The fan 22 is arranged in the air chamber 21, and the fan 22 is used to transport the gas of the cabinet 10 to the outdoors through the air duct 23 and the air chamber 21.

[0026] Specifically, the cabinet 10 has a top wall 14, a front side wall 15 and a rear side wall 16, the top exhaust vent 11 is correspondingly arranged on the top wall 14, the front exhaust vent 12 is arranged on the front side wall 15 of the cabinet 10, and the rear exhaust vent 13 is arranged on the rear side wall 16 of the cabinet 10. Among them, the front exhaust vent 12 and the rear exhaust vent 13 are arranged in the middle and lower part of the cabinet 10, and can be arranged relatively or staggered according to actual conditions, which not only optimizes the air flow path, but also ensures that the gas in each area of ​​the cabinet 10 is effectively exchanged. The ventilation component 20 is the power source of the heat dissipation and cooling system, which is mainly composed of an air chamber 21, a fan 22 and a plurality of air ducts 23. One end of these air ducts 23 is closely connected to the top exhaust vent 11, the front exhaust vent 12 and the rear exhaust vent 13 of the cabinet 10, respectively, and the other end is uniformly connected to the air chamber 21. The fan 22 , as the heart of the entire ventilation assembly 20 , is cleverly placed in the air chamber 21 .

[0027] When the fan 22 is started, it will generate a strong suction force, sucking the hot and cold mixed gases collected through various air outlets inside the cabinet 10 into the air duct 23, and then undergoing centralized processing in the air chamber 21, and finally the heat-containing gases are quickly discharged to the outside through the fan 22, thereby achieving efficient exchange of gases inside and outside the cabinet 10.

[0028] In summary, the high-voltage inverter heat dissipation cooling system 100 provided by the embodiment of the present invention not only ensures the smoothness of air circulation, but also makes the heat dissipation process more uniform, avoiding the phenomenon of local overheating by setting the top exhaust vents 11, the front exhaust vents 12 and the rear exhaust vents 13 on the cabinet 10. And through this internal and external linkage and multi-ventilation coordinated heat dissipation method, not only the cooling efficiency of the inverter is significantly improved, but also its normal operation under various complex working conditions is effectively guaranteed, the failure rate caused by overheating is reduced, and the reliability and stability of the entire system are improved.

[0029] like Figure 2 , Figure 4 As shown, in this embodiment, there are two front air outlets 12, and the two front air outlets 12 are spaced apart in the height direction of the cabinet 10, which not only ensures that the air at different heights in the cabinet 10 can be effectively exchanged, but also promotes the air flow in the vertical direction in the cabinet 10, which helps to form a more uniform and efficient heat dissipation environment. In actual applications, when the fan 22 is started, the air inside the cabinet 10 will flow into the air chamber 21 of the ventilation component 20 through the two spaced front air outlets 12, the top air outlet 11 and the rear air outlet 13 under the action of wind pressure. After the air on these different paths is mixed in the air chamber 21, it is uniformly discharged to the outside by the fan 22, thereby achieving comprehensive heat dissipation inside the entire cabinet 10.

[0030] Furthermore, there are two rear air outlets 13, and the two rear air outlets 13 are spaced apart in the height direction of the cabinet 10. The two rear air outlets 13 are respectively located at different heights of the rear side wall 16 of the cabinet 10, and similar to the front air outlet 12, a certain vertical distance is maintained between them. Such a design allows air at different heights in the cabinet 10 to be discharged smoothly through the rear air outlet 13, avoiding the problem of local overheating or uneven heat dissipation. In this embodiment, the front seal and the rear air outlet 13 are arranged relatively.

[0031] Furthermore, filters 24 are provided at the top air outlet 11, the front air outlet 12 and the rear air outlet 13, which effectively prevent pollutants such as dust and debris from entering the cabinet 10 and causing damage to key equipment such as high-voltage inverters. In actual applications, when the air inside the cabinet 10 is discharged to the outside through these air outlets, the filter 24 will act as the first line of defense, filtering out impurities and pollutants in the air, thereby protecting the equipment and lines inside the cabinet 10 from pollution and damage.

[0032] like Figure 1 As shown, in some embodiments, the ventilation assembly 20 further includes an air outlet grille 25, and the air outlet grille 25 is arranged at the exhaust port of the air chamber 21. In this embodiment, the frequency converter is arranged indoors in the frequency conversion room. The air chamber 21 includes a first chamber 211 located above the cabinet 10 and a second chamber 212 located outside the frequency conversion room. The first chamber 211 and the second chamber 212 can be connected through a pipeline, the fan 22 is arranged in the second chamber 212, and the exhaust port is arranged on the second chamber 212.

[0033] Among them, the air outlet is provided with an air outlet grille 25, which can effectively evenly distribute the airflow discharged by the fan 22, preventing the airflow from directly impacting surrounding equipment or personnel, thereby reducing noise and safety hazards. Secondly, the grille structure of the air outlet grille 25 can further block and filter out fine particles that may be carried in the airflow, ensuring that the air discharged outdoors is cleaner and more environmentally friendly. In addition, the design of the air outlet grille 25 also takes into account the principles of aerodynamics. Through reasonable grille spacing and shape, it can minimize the resistance of the airflow during the discharge process and improve the heat dissipation efficiency.

[0034] Furthermore, two fans 22 are provided, and the two fans 22 are arranged side by side in the air chamber 21, so as to form an efficient wind-driven system, which not only fully utilizes the space in the air chamber 21, but also makes the airflow smoother and more uniform during the discharge process. Such a design avoids problems such as uneven heat dissipation or fan 22 failure caused by excessive workload of a single fan 22, and improves the stability and reliability of the system. Optionally, the fan 22 is an axial flow fan 22.

[0035] like Figure 3 , Figure 4 As shown, in some embodiments, the cabinet 10 is divided into a power cabinet 120 and a transformer cabinet 130, the power cabinet 120 and the transformer cabinet 130 are arranged adjacent to each other, and a heat insulation board 17 is provided between the power cabinet 120 and the transformer cabinet 130. Among them, the power cabinet 120 is used to install key components such as the power module and control circuit of the high-voltage inverter; the transformer cabinet 130 is used to install the matching transformer of the high-voltage inverter. The transformer will also generate a certain amount of heat when working, and its electromagnetic field may interfere with the surrounding electronic equipment. The heat insulation board 17 not only has excellent heat insulation performance, but also can effectively block the heat transfer between the two cabinets 10, thereby reducing the mutual influence between the power cabinet 120 and the transformer cabinet 130, and ensuring that both can operate in a safe and stable temperature environment. At the same time, the heat insulation board 17 also has a certain electromagnetic shielding function, which can reduce the interference of the electromagnetic field generated by the transformer on the electronic equipment in the power cabinet 120, and improve the electromagnetic compatibility of the entire system.

[0036] In this embodiment, the cabinet 10 further includes a control cabinet 110 , and the control cabinet 110 , the power cabinet 120 and the transformer cabinet 130 are arranged in sequence from left to right, wherein a plurality of transformer cabinets 130 may be arranged, for example, 2, 3, etc.

[0037] Furthermore, the heat insulation board 17 is made of glass fiber or asbestos, which not only has excellent heat insulation performance, but also has good processability and plasticity, and can meet the heat insulation requirements of different shapes and sizes. In this embodiment, the heat insulation board 17 can be fixed to the inner side of the transformer cabinet 10 by a bolt structure or a snap structure.

[0038] Furthermore, the ventilation assembly 20 further includes an insulation layer 26, which is wrapped around the outside of the air duct 23 to prevent the hot air in the air duct 23 from continuously affecting the temperature of the indoor space where the cabinet 10 is located. At the same time, the insulation layer 26 also has good moisture-proof and anti-corrosion properties, which can protect the air duct 23 from being corroded by the external environment and extend the service life of the air duct 23.

[0039] like Figure 4 As shown, in some embodiments, the high-voltage inverter heat dissipation cooling system 100 also includes a temperature monitoring component 30, the temperature monitoring component 30 includes a plurality of temperature sensors 31, and the plurality of temperature sensors 31 are respectively arranged at the air duct 23, the top exhaust outlet 11, the front exhaust outlet 12 and the rear exhaust outlet 13, and the temperature sensor 31 is electrically connected to the fan 22.

[0040] Specifically, these temperature sensors 31 are installed inside the air duct 23, and can sense the temperature state of the air flowing in the air duct 23 in real time; at the same time, temperature sensors 31 are also set at the top air outlet 11, the front air outlet 12 and the rear air outlet 13 to monitor the air temperature at different outlet positions. Such a layout ensures that the temperature dynamics of the entire heat dissipation process can be mastered in all directions without blind spots.

[0041] More importantly, these temperature sensors 31 are electrically connected to the fans 22 in the system. This means that when any sensor detects an abnormal temperature, it can quickly transmit this information to the fan 22 control system. The fan 22 will then automatically adjust its speed or operating mode according to the received temperature data to achieve the purpose of rapid response and effective regulation of heat dissipation efficiency. This intelligent linkage mechanism not only improves the flexibility of the heat dissipation system, but also greatly enhances the adaptability and self-protection ability of the high-voltage inverter when facing high-temperature environments.

[0042] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] In the present invention, the terms "one embodiment", "some embodiments", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0047] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A high voltage inverter heat dissipation cooling system, characterized in that: include: A cabinet body, wherein the cabinet body has a top air outlet, a front air outlet and a rear air outlet, wherein the front air outlet and the rear air outlet are arranged at a middle and lower part of the cabinet body, and the front air outlet and the rear air outlet are arranged oppositely or staggered; A ventilation component includes an air chamber, a fan and a plurality of air ducts, one end of the plurality of air ducts are respectively connected to the top exhaust port, the front exhaust port and the rear exhaust port, the other end of the plurality of air ducts are connected to the air chamber, the fan is arranged in the air chamber, and the fan is used to transport the gas of the cabinet to the outdoors through the air ducts and the air chamber.

2. The high-voltage inverter heat dissipation cooling system according to claim 1, characterized in that: The front air outlets are provided with two, and the two front air outlets are spaced apart in the height direction of the cabinet.

3. The high-voltage inverter heat dissipation cooling system according to claim 1, characterized in that: There are two rear air outlets, and the two rear air outlets are spaced apart in the height direction of the cabinet.

4. The high-voltage inverter heat dissipation cooling system according to claim 1, characterized in that: The top air outlet, the front air outlet and the rear air outlet are all provided with filter screens.

5. The high-voltage inverter heat dissipation cooling system according to claim 1, characterized in that: The ventilation assembly also includes an air outlet grille, which is arranged at the exhaust port of the air chamber.

6. The high-voltage inverter heat dissipation cooling system according to claim 1, characterized in that: The cabinet body is divided into a power cabinet and a transformer cabinet. The power cabinet and the transformer cabinet are arranged adjacent to each other, and a heat insulation board is arranged between the power cabinet and the transformer cabinet.

7. The high-voltage inverter heat dissipation cooling system according to claim 6, characterized in that: The heat insulation board is made of glass fiber or asbestos.

8. The high-voltage inverter heat dissipation cooling system according to claim 1, characterized in that: The ventilation component also includes a heat-insulating layer, and the heat-insulating layer is wrapped around the outside of the air duct.

9. The high-voltage inverter heat dissipation cooling system according to claim 1, characterized in that: The fans are provided with two fans, which are arranged side by side in the air chamber, and the fans are axial flow fans.

10. The high-voltage inverter heat dissipation cooling system according to claim 1, characterized in that: It also includes a temperature monitoring component, which includes a plurality of temperature sensors. The plurality of temperature sensors are respectively arranged at the air duct, the top exhaust outlet, the front exhaust outlet and the rear exhaust outlet, and the temperature sensor is electrically connected to the fan.

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