Inverter power supply and rail transit ventilation system
By optimizing the spatial layout of the inverter power supply through a double-layer heat sink and a high-mounted isolation column, the problems of poor heat dissipation and large size and weight are solved, achieving efficient heat dissipation and compact design, and improving the reliability and safety of the electrical system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGSHA DANFINSWE ELECTRICAL TECH CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-31
AI Technical Summary
Existing inverters have poor heat dissipation, which prevents internal components from being cooled in time, leading to premature damage. They are also too large and heavy.
The system employs a dual-layer heat sink structure, consisting of first and second heat sinks that contact the components requiring heat dissipation. Components not requiring heat dissipation are elevated via isolation columns, optimizing the spatial layout to reduce volume and weight.
This achieves timely and efficient heat dissipation for all components, extends the service life of the inverter, reduces size and weight, and improves the reliability and safety of the electrical system.
Smart Images
Figure CN224583532U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rail transit technology, and in particular to an inverter power supply and a rail transit ventilation system. Background Technology
[0002] As a core component of rail transit ventilation systems, the size and layout of inverter power supplies play a decisive role in the overall size and performance of the system. With the continuous evolution of high-speed train technology and increasingly stringent requirements for the weight and size of power supply equipment, how to effectively reduce the size of power supplies while ensuring stable and reliable electrical performance has become a key challenge that urgently needs to be overcome in the design field.
[0003] Existing inverters generally employ a planar layout of components, a traditional design that results in bulky and heavy inverters. Furthermore, existing inverters suffer from poor heat dissipation, preventing timely cooling of internal components and leading to premature failure. Therefore, this paper proposes an inverter and a rail transit ventilation system to address these issues. Utility Model Content
[0004] The purpose of this utility model is to provide an inverter power supply that solves the technical problems of poor heat dissipation in existing inverter power supplies, inability to dissipate heat from some components inside the cabinet that require heat dissipation, resulting in premature damage to the inverter power supply, as well as the large size and excessive weight of existing inverter power supplies.
[0005] To achieve the above objectives, this utility model provides an inverter power supply, comprising: a housing;
[0006] A first radiator is located at the bottom of the housing, and an output filter board is provided on the top surface of the first radiator;
[0007] The second heat sink is located on the top surface of the first heat sink, and the second heat sink is located on one side of the output filter board;
[0008] A power board is disposed above the output filter board and is located on one side of the second heat sink. A control board bracket is disposed above the power board and a control board is disposed on the control board bracket.
[0009] A capacitor plate is disposed above the first heat sink, and an input filter plate is disposed above the capacitor plate;
[0010] A capacitor is disposed on the bottom surface of the capacitor plate, the capacitor is located on one side of the second heat sink, and the bottom surface of the capacitor is attached to the top surface of the first heat sink.
[0011] Preferably, the top surface of the first heat sink is provided with a plurality of first isolation pillars, and the upper ends of the plurality of first isolation pillars are respectively connected to the output filter board.
[0012] Preferably, a plurality of second isolation pillars are provided above the output filter board, and the upper ends of the plurality of second isolation pillars are respectively connected to the power board.
[0013] Preferably, a plurality of third isolation columns are provided above the power board, and the upper ends of the plurality of third isolation columns are respectively connected to the control board bracket.
[0014] Preferably, the top surface of the first heat sink is provided with a plurality of fourth isolation pillars, and the upper ends of the plurality of fourth isolation pillars are respectively connected to the capacitor plate.
[0015] Preferably, the lower part of the first heat sink is provided with a plurality of heat dissipation fins.
[0016] Preferably, the second radiator is L-shaped, and the bottom surface of the second radiator is attached to the top surface of the first radiator.
[0017] Preferably, the first side of the input filter board is located on the capacitor board, and the second side of the input filter board is located on the control board bracket.
[0018] Preferably, the top of the enclosure is provided with a cover, and a connector is provided on the cover. The input filter board is connected to the connector via a wiring harness, and the output filter board is connected to the connector via a wiring harness.
[0019] A rail transit ventilation system includes the inverter power supply described in any of the above claims.
[0020] Compared to the aforementioned background technology, the inverter power supply provided by this utility model has the following beneficial effects: By placing the output filter board on the top surface of the first heat sink and one side of the second heat sink, placing the power board on one side of the second heat sink, and placing the capacitor board above the first heat sink, while simultaneously attaching the bottom surface of the capacitor to the top surface of the first heat sink, the first and second heat sinks respectively contact the corresponding components requiring heat dissipation, enabling timely and efficient heat dissipation for the components inside the enclosure that require heat dissipation, thereby extending the overall service life of the inverter power supply. For components that do not require heat dissipation, a raised arrangement is adopted, thereby maximizing the rational utilization of space, making the entire layout structure more compact and orderly, and effectively reducing the overall size and weight of the inverter power supply. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0022] Figure 1 A three-dimensional structural diagram of the inverter power supply provided in an embodiment of this utility model;
[0023] Figure 2 A three-dimensional structural view of the inverter power supply after the hidden housing is provided in an embodiment of this utility model;
[0024] Figure 3 This is a top view of the inverter power supply hidden box provided in an embodiment of the present invention.
[0025] Specifically, 1- Enclosure; 2- First heat sink; 201- Heat sink fins; 3- Output filter board; 4- Second heat sink; 5- Power board; 6- Control board bracket; 7- Control board; 8- Capacitor board; 9- Input filter board; 10- Capacitor; 11- First isolation post; 12- Second isolation post; 13- Third isolation post; 14- Fourth isolation post; 15- Fifth isolation post; 16- Sixth isolation post; 17- Enclosure cover; 18- Connector; 19- Mounting plate. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0028] like Figure 1 , Figure 2 and Figure 3As shown, to achieve the above objectives, this utility model provides an inverter power supply, including: a housing 1 and a first heat sink 2 and a second heat sink 4 disposed on the housing 1. The first heat sink 2 is located at the bottom of the housing 1, and an output filter plate 3 is disposed on the top surface of the first heat sink 2. The output filter plate 3 is used to filter output signal noise. The second heat sink 4 is disposed on the top surface of the first heat sink 2, and is located on one side of the output filter plate 3. The first heat sink 2 and the second heat sink 4 can simultaneously dissipate heat from the output filter plate 3 to improve its heat dissipation efficiency. A power board 5 is disposed above the output filter plate 3. The power board 5 integrates power transistors, IGBTs, and other power components. These power components generate heat when powered on, and due to their high power consumption, some electrical energy is converted into heat energy during operation. Specifically, the power board 5 is located on one side of the second heat sink 4, which dissipates heat from the power board 5. A capacitor plate 8 is mounted above the first heat sink 2, and a capacitor 10 is mounted on the bottom surface of the capacitor plate 8. The heat generated by the capacitor 10 accounts for only a small portion of its total power. The capacitor 10 is located on one side of the second heat sink 4, and the bottom surface of the capacitor 10 is in contact with the top surface of the first heat sink 2. The first heat sink 2 and the second heat sink 4 can simultaneously dissipate heat from the capacitor 10, thereby improving the heat dissipation efficiency of the capacitor 10. By placing the output filter plate 3 on the top surface of the first heat sink 2 and one side of the second heat sink 4, placing the power plate 5 on one side of the second heat sink 4, and placing the capacitor plate 8 above the first heat sink 2, while simultaneously placing the bottom surface of the capacitor 10 in contact with the top surface of the first heat sink 2, the first heat sink 2 and the second heat sink 4 respectively contact the corresponding components that require heat dissipation, enabling timely and efficient heat dissipation of the components that require heat dissipation, thus extending the overall service life of the inverter power supply.
[0029] In addition, an input filter board 9 is installed above the capacitor board 8, and a control board bracket 6 is installed above the power board 5. A control board 7 is installed on the control board bracket 6. The control board 7 is connected to the output filter board 3, power board 5, input filter board 9, and capacitor board 8 via wiring harnesses. For components that do not require heat dissipation, a raised arrangement is adopted to maximize the rational use of space, making the entire layout structure more compact and orderly, and effectively reducing the overall size and weight of the inverter power supply.
[0030] In one embodiment of this utility model, a plurality of first isolation pillars 11 are provided on the top surface of the first heat sink 2. The upper ends of the plurality of first isolation pillars 11 are respectively connected to the output filter board 3, and the output filter board 3 is supported at a certain height by the first isolation pillars 11. A plurality of second isolation pillars 12 are provided above the output filter board 3. The upper ends of the plurality of second isolation pillars 12 are respectively connected to the power board 5, and the power board 5 is supported at a certain height by the second isolation pillars 12. A plurality of third isolation pillars 13 are provided above the power board 5. The upper ends of the plurality of third isolation pillars 13 are respectively connected to the control board bracket 6, and the control board bracket 6 is supported at a certain height by the third isolation pillars 13. The top surface of the first heat sink 2 is equipped with several fourth isolation pillars 14. The upper ends of the fourth isolation pillars 14 are respectively connected to capacitor plates 8. The capacitor plates 8 are raised to a certain height by the fourth isolation pillars 14. That is, components that do not require heat dissipation are arranged in a raised manner to maximize the rational use of space. This further improves the rational use of space for each component on the cabinet 1, making the structural layout of each component on the cabinet 1 more compact and further reducing the overall size and weight of the inverter power supply. Moreover, the arrangement of each component on the cabinet 1 has been carefully planned and designed, which not only fully ensures the stability of electrical performance, but also fully considers the convenience of operation, so that the entire system achieves a good balance between performance and practicality.
[0031] In some embodiments of this utility model, the first isolation post 11, the second isolation post 12, the third isolation post 13 and the fourth isolation post 14 are designed to conduct electricity as required, thereby acting as wires, preventing messy wire harnesses inside the housing 1, effectively avoiding unnecessary bends and redundant links, making the overall electrical circuit design more reasonable, and significantly improving the reliability and safety of the electrical system.
[0032] It should be noted that several heat dissipation fins 201 are arranged in an array at the lower part of the first radiator 2, and several heat dissipation fins are parallel to each other. The heat dissipation fins can increase the contact area between the first radiator 2 and the air, thereby accelerating the heat exchange between the first radiator 2 and the air and improving the heat dissipation efficiency of the components inside the housing 1.
[0033] It should be further explained that the second radiator 4 is L-shaped in general. Specifically, the second radiator 4 is an L-shaped plate, and the bottom surface of the second radiator 4 is attached to the top surface of the first radiator 2. By setting the second radiator 4 on the top surface of the first radiator 2, the heat exchange area between the first radiator 2 and the air inside the box 1 can be increased, thereby further improving the heat dissipation efficiency of each component inside the box 1.
[0034] The first side of the input filter board 9 is located on the capacitor board 8, and the second side of the input filter board 9 is located on the control board bracket 6. Specifically, the left side of the input filter board 9 is fixed to the capacitor board 8 by two fifth isolation pillars 15, and the right side of the input filter board 9 is fixed to the control board bracket 6 by two sixth isolation pillars 16.
[0035] Several mounting plates 19 are respectively provided on the sides and top of the enclosure 1. The mounting plates 19 are used to fix the enclosure 1 to the equipment mounting frame by bolt connection to complete the fixed installation of the entire inverter power supply. In addition, connectors 18 are provided on the cover 17. The input filter board 9 is connected to the connector 18 through a wire harness, and the output filter board 3 is connected to the connector 18 through a wire harness. The wire harness is organized through the connector 18. The other components are no longer connected by wire harness, but directly achieve electrical connection between the components by the corresponding first isolation post 11, second isolation post 12, third isolation post 13, fourth isolation post 14, fifth isolation post 15 and sixth isolation post 16. This greatly simplifies the connection process and makes on-site assembly work simpler and more convenient, effectively improving the overall production efficiency of the inverter power supply and the convenience of later maintenance.
[0036] On the other hand, by designing the first isolation post 11, second isolation post 12, third isolation post 13, fourth isolation post 14, fifth isolation post 15, and sixth isolation post 16 to be conductive as required, the electrical connection between components is achieved through the corresponding first isolation post 11, second isolation post 12, third isolation post 13, fourth isolation post 14, fifth isolation post 15, and sixth isolation post 16. This replaces the traditional method of connecting components through complex wiring harnesses, effectively reducing the cost and operational difficulty of the connection process, preventing additional electrical losses introduced due to complex wiring, and thus reducing the risk of failure. This not only fully ensures the stability of electrical performance but also fully considers the convenience of operation, achieving a good balance between performance and practicality for the entire inverter power supply.
[0037] In addition to the inverter power supply mentioned above, this utility model also provides a rail transit ventilation system including the inverter power supply disclosed in the above embodiments. For the structure of other parts of the rail transit ventilation system, please refer to the prior art, which will not be repeated here.
[0038] In summary, timely and efficient heat dissipation of components requiring cooling extends the overall lifespan of the inverter. For components that do not require cooling, a raised arrangement maximizes space utilization, resulting in a more compact and orderly layout that effectively reduces the overall size and weight of the inverter.
[0039] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.
[0040] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.
Claims
1. An inverter power supply, characterized by comprising: include: Box; A first radiator is located at the bottom of the housing, and an output filter board is provided on the top surface of the first radiator; The second heat sink is located on the top surface of the first heat sink, and the second heat sink is located on one side of the output filter board; A power board is disposed above the output filter board and is located on one side of the second heat sink. A control board bracket is disposed above the power board and a control board is disposed on the control board bracket. A capacitor plate is disposed above the first heat sink, and an input filter plate is disposed above the capacitor plate; A capacitor is disposed on the bottom surface of the capacitor plate, the capacitor is located on one side of the second heat sink, and the bottom surface of the capacitor is attached to the top surface of the first heat sink.
2. The inverter power supply according to claim 1, characterized in that, The top surface of the first heat sink is provided with a plurality of first isolation pillars, and the upper ends of the plurality of first isolation pillars are respectively connected to the output filter board.
3. An inverter power supply according to claim 2, wherein Several second isolation pillars are arranged above the output filter board, and the upper ends of the several second isolation pillars are respectively connected to the power board.
4. An inverter power supply according to claim 3, wherein Several third isolation columns are arranged above the power board, and the upper ends of the several third isolation columns are respectively connected to the control board bracket.
5. An inverter power supply according to claim 4, characterized in that, The top surface of the first heat sink is provided with several fourth isolation pillars, and the upper ends of the several fourth isolation pillars are respectively connected to the capacitor plate.
6. The inverter power supply according to claim 1, wherein The lower part of the first heat sink is arrayed with several heat dissipation fins.
7. An inverter power supply according to claim 6, wherein The second heat sink is L-shaped, and the bottom surface of the second heat sink is attached to the top surface of the first heat sink.
8. The inverter power supply according to claim 1, wherein The first side of the input filter board is located on the capacitor board, and the second side of the input filter board is located on the control board bracket.
9. The inverter power supply according to claim 1, wherein The top of the enclosure is provided with a cover, and a connector is provided on the cover. The input filter board is connected to the connector via a wiring harness, and the output filter board is connected to the connector via a wiring harness.
10. A rail transit ventilation system characterized by, The inverter power supply includes any one of claims 1-9 above.