A frequency converter with internal electronic device partition installation

Abstract

The utility model discloses a kind of internal electronic device partition installation type frequency converters, its shell is separated into left side chamber, middle air duct and right side chamber by left, right partition, left side chamber sets up rectifier module group and direct current contactor, right side chamber sets up drive board and IGBT module group, air duct installs radiator, capacitor group transversely penetrates air duct and is fixed between left, right side partition, realize that rectifier module group and IGBT module group share radiator;Shell top is equipped with protective piece and receives control panel, inlet group external fan group brings in airflow and carries away heat.The utility model concentrates high heating element in air duct both sides by partition installation, utilizes shared radiator and fan group to realize high-efficiency heat dissipation, avoid heat interference;Control panel is independently laid in top protective piece, and optimization space utilization rate;The utility model is in guaranteeing heat dissipation performance, through structure optimization makes overall layout compact, reduce the volume of frequency converter, it is favorable to reduce cost.

Description

Technical Field

[0001] This utility model relates to the field of frequency converter technology, specifically a frequency converter with partitioned internal electronic components. Background Technology

[0002] High-power frequency converters contain numerous internal electronic components, including control boards, drive boards, IGBT modules, rectifier modules, DC contactors, and capacitors. IGBT modules, rectifier modules, and capacitors are particularly numerous and often grouped together. The capacitors used are typically large-sized to provide the required energy storage capacity, which occupies a significant amount of internal space. Furthermore, IGBT modules, rectifier modules, and capacitors are all electronic components that generate substantial heat. Therefore, how to rationally arrange these components, fully utilize the internal space of the frequency converter, and ensure reliable heat dissipation becomes a pressing issue. Utility Model Content

[0003] The purpose of this invention is to overcome the defects and shortcomings of the existing technology and provide a frequency converter with partitioned internal electronic components. By partitioning the components, high-heat-generating elements are concentrated on both sides of the air duct, and efficient heat dissipation is achieved by using a shared heat sink and fan assembly. This avoids heat interference, optimizes space utilization, and while ensuring heat dissipation performance, the overall layout is made more compact through structural optimization, thereby reducing the size of the frequency converter and lowering costs.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An internal electronic component partitioned inverter includes a housing, a control board, a drive board, an IGBT module group, a rectifier module group, a DC contactor, a capacitor bank, a heat sink, and a fan group. The housing has air inlets and outlets on its front and rear sides, respectively. The fan groups are respectively installed on the outer sides of the air inlets. The inverter is characterized by: a left-side partition and a right-side partition dividing the interior of the housing into a left-side chamber, a middle air duct, and a right-side chamber; the DC contactor and drive board are respectively fixedly installed on the outer sides of the left-side and right-side partitions and located in the left-side and right-side chambers, respectively; the heat sink is located in the air duct; the rectifier module group and IGBT module group are respectively located in the left-side and right-side chambers and are respectively fixedly installed on both sides of the heat sink; the capacitor bank extends laterally through the air duct and is fixedly installed between the left-side and right-side partitions; a protective component is fixedly connected to the top of the housing, and the control board is fixedly installed on the top surface of the housing and located inside the protective component.

[0006] Furthermore, the housing includes a bottom plate, a top plate, a left side plate, a right side plate, a front side plate, and a rear side plate that are fixedly connected to each other.

[0007] Furthermore, the left and right partitions are fixedly installed on the base plate, with the upper edges of the left and right partitions abutting against the bottom surface of the top plate.

[0008] Furthermore, the air inlet assembly and the air outlet are respectively disposed on the front side panel and the rear side panel.

[0009] Furthermore, the rear side of the base plate extends outward relative to the top plate, left side plate and right side plate, and a base with a rear opening is fixedly connected to the rear side plate and the rear side of the base plate, and heat dissipation holes are provided on both sides of the base.

[0010] Furthermore, the IGBT module group, rectifier module group, DC contactor and capacitor group are connected to each other via copper busbars. The input and output ends of the copper busbars are respectively fixedly connected with input terminals and output terminals. The input terminals extend from the left side plate and the output terminals extend from the rear side plate and into the interior of the base.

[0011] Furthermore, the left and right partitions are respectively provided with windows to accommodate the rectifier module group and the IGBT module group.

[0012] Furthermore, the left and right partitions are respectively provided with through holes for the capacitor bank to pass through, and clamps are respectively fixedly fitted on the left side of the capacitor bank, and the clamps are fixedly installed on the outside of the left partition.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention features left and right side partitions that divide the internal space of the inverter housing into a left chamber, a right chamber, and a central air duct. Based on the input and output structure, the rectifier module and DC contactor are arranged in the left chamber, the drive board and IGBT module in the right chamber, and the heat sink in the central air duct. The capacitor bank is fixedly installed between the left and right side partitions, running laterally through the air duct. This allows the rectifier module and IGBT module to share a single heat sink, effectively meeting the heat dissipation needs of the high-heat-generating rectifier module, IGBT module, and capacitor bank. The dissipated heat is quickly expelled through the air duct by the fan, preventing any impact on other electronic components. Furthermore, the smaller control board is mounted on the top of the housing, enabling partitioned installation of internal electronic components. This rational layout optimizes the overall inverter structure, reduces its size, and helps lower costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .

[0016] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 .

[0017] Figure 3 This is a partial structural diagram of the present invention. Figure 1 .

[0018] Figure 4 This is a partial structural diagram of the present invention. Figure 2 .

[0019] Figure 5 This is a partial structural diagram of the present invention. Figure 3 .

[0020] Figure 6 This is an exploded view of the top plate and its components in this utility model. Detailed Implementation

[0021] 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.

[0022] See Figure 1-6 An internally partitioned frequency converter includes a housing 1, a control board 2, a drive board 3, an IGBT module group 4, a rectifier module group 5, a DC contactor 6, a capacitor group 7, a heat sink 8, and a fan group 9. Air inlets and outlets 10 are respectively located on the front and rear sides of the housing 2. The fan group 9 is installed on the outer side of the air inlet group. A left partition 11 and a right partition 12 divide the interior of the housing 1 into a left chamber 13, a middle air duct 14, and a right chamber 15. The DC contactor 6 and the drive board 2 are respectively fixedly installed on the... The heat sink 8 is located in the air duct 14, outside the left partition 11 and the right partition 12, respectively, and in the left chamber 13 and the right chamber 15. The rectifier module group 5 and the IGBT module group 4 are located in the left chamber 13 and the right chamber 15, respectively, and are fixedly installed on both sides of the heat sink 8. The capacitor group 7 runs horizontally through the air duct 14 and is fixedly installed between the left partition 11 and the right partition 12. The top of the housing 1 is fixedly connected to the protective member 25, and the control board 2 is fixedly installed on the top surface of the housing 1 and is located inside the protective member 25.

[0023] It should be noted that the protective component 25 includes a fastener 251 and a detachable component 252.

[0024] The fastener 251 is provided with a window 24 for mounting the control panel 23, and the detachable part 252 is engaged with the fastener 251.

[0025] In this utility model, the housing 1 includes a bottom plate 101, a top plate 102, a left side plate 103, a right side plate 104, a front side plate 105, and a rear side plate 106 that are fixedly connected to each other. It is easy to disassemble, install, and maintain.

[0026] In this utility model, the left partition 11 and the right partition 12 are fixedly installed on the base plate 101, and the upper edges of the left partition 11 and the right partition 12 abut against the bottom surface of the top plate 102, thereby realizing the installation of the left partition 11 and the right partition 12.

[0027] In this utility model, the air inlet assembly and the air outlet 10 are respectively disposed on the front side plate 105 and the rear side plate 106.

[0028] In this utility model, the rear side of the base plate 101 extends outward relative to the top plate 102, the left side plate 103 and the right side plate 104. The rear side plate 104 and the rear side of the base plate 101 are fixedly connected to a base 16 with an open rear side. Heat dissipation holes 17 are provided on both sides of the base 16.

[0029] In this utility model, the IGBT module group 4, the rectifier module group 5, the DC contactor 6 and the capacitor group 7 are connected to each other through the copper busbar 18 to realize the connection of each electronic device in the circuit. The input and output ends of the copper busbar 18 are respectively fixedly connected to the input terminal 19 and the output terminal 20. The input terminal 19 extends from the left side plate 103, and the output terminal 20 extends from the rear side plate 106 and extends into the interior of the base 16.

[0030] In this utility model, windows 21 are provided on the left partition 11 and the right partition 12 respectively, which are used to make way for the rectifier module group 5 and the IGBT module group 4, so as to fix the rectifier module group 5 and the IGBT module group 4 on both sides of the heat sink 8 respectively.

[0031] In this utility model, the left partition 11 and the right partition 12 are respectively provided with through holes for the capacitor group 7 to pass through. The left side of the capacitor group 7 is respectively fixedly fitted with clamp group 22. The clamp group 22 is fixedly installed on the outside of the left partition 11 to realize the fixed installation of the capacitor group 7.

[0032] The present invention will be further described below with reference to the accompanying drawings:

[0033] During assembly, the DC contactor 6 and the drive board 2 are first fixedly installed on the outside of the left partition 11 and the right partition 12 respectively with screws. Then, the heat sink 8 is placed in the air duct 14, and the rectifier module group 5 and the IGBT module group 4 are fixedly installed on both sides of the heat sink 8 respectively with screws.

[0034] Next, the capacitor group 7 is inserted into the through holes on the left partition 11 and the right partition 12 respectively. Then, the clamp group 22 is fitted onto the left side of the capacitor group 7 respectively, and bolts are inserted and locked with nuts. Then, the clamp group 22 is fixedly installed on the outside of the left partition 11 with screws.

[0035] Then, according to the common connection method of existing frequency converters, the copper busbar 18 is connected to the IGBT module group 4, rectifier module group 5, DC contactor 6 and capacitor group 7 respectively.

[0036] Then, connect the input terminal 19 and the output terminal 20.

[0037] Then, the top plate 102, left side plate 103, right side plate 104, front side plate 105 and rear side plate 106 are assembled with the bottom plate 101 to form the housing 1, and then the base 16 is connected so that the input terminal 19 extends from the left side plate 103 and the output terminal 20 extends from the rear side plate 106 and extends into the interior of the base 16.

[0038] Finally, the fan assembly 9 is installed on the front side plate 105 on the outside of the air inlet assembly respectively; at the same time, the control board 2 is fixedly installed on the top surface of the top plate 102 with screws, and the control panel 23 is snapped into the window 24, and the detachable part 252 is snapped into the fixed part 251, so that the control board 2 is located inside the protective part 25.

[0039] In use, the rectifier module group 5 and DC contactor 6 are arranged in the left chamber 13, the drive board 3 and IGBT module group 4 are arranged in the right chamber 15, the heat sink 8 is arranged in the middle air duct 14, and the capacitor group 7 is fixedly installed between the left and right partitions 11 and 12, running horizontally through the air duct 14. This allows the rectifier module group 5 and IGBT module group 4 to share a heat sink 8. Therefore, it can well meet the heat dissipation requirements of the rectifier module group 5, IGBT module group 4 and capacitor group 7, which generate a lot of heat. The dissipated heat can be quickly discharged through the air duct 14 under the action of the airflow brought in by the fan group 9, without affecting other electronic components, such as the drive board 3 and DC contactor 6. In addition, the smaller control board 2 is installed on the top of the housing 1, thereby realizing the partitioned installation of internal electronic components. The layout is reasonable, optimizes the structure of the entire frequency converter, reduces the size of the frequency converter, and helps to reduce costs.

[0040] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0041] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. A frequency converter with partitioned internal electronic components, comprising a housing, a control board, a drive board, an IGBT module group, a rectifier module group, a DC contactor, a capacitor group, a heat sink, and a fan group, wherein the front and rear sides of the housing are respectively provided with an air inlet group and an air outlet, and the fan group is respectively installed on the outer side of the air inlet group, characterized in that: The interior of the housing is divided into a left chamber, a middle air duct, and a right chamber by a left and right partition. The DC contactor and drive board are respectively fixedly installed on the outside of the left and right partitions and are located in the left and right chambers respectively. The heat sink is located in the air duct. The rectifier module group and IGBT module group are respectively located in the left and right chambers and are respectively fixedly installed on both sides of the heat sink. The capacitor group runs horizontally through the air duct and is fixedly installed between the left and right partitions. A protective member is fixedly connected to the top of the housing, and the control board is fixedly installed on the top surface of the housing and is located inside the protective member.

2. The frequency converter with partitioned internal electronic components according to claim 1, characterized in that: The housing includes a bottom plate, a top plate, a left side plate, a right side plate, a front side plate, and a rear side plate that are fixedly connected to each other.

3. A frequency converter with partitioned internal electronic components according to claim 2, characterized in that: The left and right partitions are fixedly installed on the base plate, and the upper edges of the left and right partitions abut against the bottom surface of the top plate.

4. A frequency converter with partitioned internal electronic components according to claim 2, characterized in that: The air inlet assembly and air outlet are respectively disposed on the front side panel and the rear side panel.

5. A frequency converter with partitioned internal electronic components according to claim 2, characterized in that: The rear side of the base plate extends outward relative to the top plate, left side plate and right side plate. The rear side plate and the rear side of the base plate are fixedly connected to a base with an open rear side. The base has heat dissipation holes on both sides.

6. A frequency converter with partitioned internal electronic components according to claim 5, characterized in that: The IGBT module group, rectifier module group, DC contactor and capacitor group are connected to each other via copper busbars. The input and output ends of the copper busbars are respectively fixedly connected with input terminals and output terminals. The input terminals extend from the left side plate and the output terminals extend from the rear side plate and into the interior of the base.

7. A frequency converter with partitioned internal electronic components according to claim 1, characterized in that: The left and right partitions are respectively provided with windows to accommodate the rectifier module group and the IGBT module group.

8. A frequency converter with partitioned internal electronic components according to claim 1, characterized in that: The left and right partitions are respectively provided with through holes for the capacitor bank to pass through. The left side of the capacitor bank is respectively fixedly fitted with clamps, which are fixedly installed on the outside of the left partition.

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