CN214412569U

CN214412569U - High-power inversion unit structure of low-voltage frequency converter

Info

Publication number: CN214412569U
Application number: CN202120287798.8U
Authority: CN
Inventors: 张树林; 郑友斌; 王恩凤; 何树全; 邓仕方; 高凤
Original assignee: Hope Senlan Science & Technology Corp ltd
Current assignee: Hope Senlan Science & Technology Corp ltd
Priority date: 2021-02-02
Filing date: 2021-02-02
Publication date: 2021-10-15
Anticipated expiration: 2031-02-02

Abstract

The utility model provides a high-power contravariant unit structure of low-voltage inverter arranges for upper and lower two parts. The upper part of the machine core assembly is provided with a metal plate shell, a filter capacitor, a power module, a radiator, a fuse, an in-out bus bar and a printed board structure device, and the radiator adopts an independent air duct design, so that the working temperature of components is reduced, the performance of the machine core is improved, and the service life of the machine core is prolonged; the fuse and the incoming and outgoing line busbar are arranged on the back of the case, so that the unit width is reduced; the copper plate is bent at the electric connection position of the filter capacitor and the power module, so that a riveted copper column structure is omitted; lower partial structure is for dismantling independent fan design, is provided with underframe subassembly and independent fan. The high-power inversion unit is structurally designed, the unit structure is simple to install and operate, and convenient to disassemble and maintain; the unit has compact integral structure, smaller volume compared with the traditional frequency converter unit, and lower weight and cost.

Description

High-power inversion unit structure of low-voltage frequency converter

Technical Field

The utility model relates to a high-power contravariant unit structure of low-voltage inverter.

Background

With the progress of science and technology, the motor frequency conversion control technology has been widely used in the fields of mining heavy machinery, agriculture, animal husbandry, fishery, logistics, buildings and the like. The inversion unit of the high-power frequency converter is composed of power electronic devices, completes an electric energy control device for converting direct current into alternating current, is an indispensable important link in the motor frequency conversion control technology, and directly influences the overall size, installation, maintenance and production cost by the structural design; meanwhile, the heat dissipation design of the internal high-power electronic device directly influences the performance and the service life of the whole machine.

The inverter mechanism of the frequency converter in the motor frequency conversion control technology needs to be supplemented with a rectifying mechanism, most parts are spliced by parts in a large cabinet in the prior art, the bus-bar wiring is complex, the inspection is not easy, the disassembly and maintenance cost is high, high-power-consumption components in the inverter mechanism are more, the failure rate is high after long-term work, and the reliability of the whole mechanism is directly influenced.

Disclosure of Invention

The to-be-solved technical problem of the utility model lies in to the whole mixed installation of above-mentioned high-power converter structure, female arranging walks the line complicacy, difficult inspection, dismantlement and the problem that the maintenance cost is high provide a unitized small volume, simple, the convenient low-voltage inverter contravariant unit structure of maintenance of installation.

The technical solution adopted by the utility model for solving the above technical problems is to provide a novel high-power inverter unit structure of a low-voltage inverter, which is divided into an upper part and a lower part; the upper part is a core assembly which comprises the arrangement of an inlet and outlet bus bar, the arrangement mode of a filter capacitor and a power module, the connection of the filter capacitor and the power module, the installation of a laminated bus bar and the design of a heat dissipation mode; the lower part is the installation of a detachable fan; the filter capacitor and the radiator are arranged on the middle partition plate, the power module is fixed on the installation surface of the radiator, and the positive and negative copper plates are installed on the filter capacitor and the power module.

Among the high-power contravariant unit structure of low-voltage inverter, unit structure divide into upper and lower two parts: the upper part of the machine core assembly is provided with a radiator and a filter capacitor, the radiator and the filter capacitor are arranged on a middle partition plate of the machine box assembly, the power module is installed on the radiator, the radiator adopts an independent air duct design, the filter capacitor is exposed in the independent air duct, an inlet and outlet line busbar is arranged on the back surface of the machine box assembly, current is input into the filter capacitor from the positive and negative copper bars, the filter capacitor and the power module are electrically connected by positive and negative copper plates, and current output is realized from a laminated busbar and an output copper bar which are fixed on the power module; the lower part of the structure is arranged for detachable independent fans, and comprises the fans, a bottom frame assembly, a sliding strip and a connecting cable.

In the high-power inversion unit structure of the low-voltage frequency converter, the bottom frame component, the air duct component, the partition plate, the middle frame component, the middle partition plate, the right side plate and the case cover plate jointly form an independent air duct of the unit; the heat dissipation mode is blowing, and the fan is fixed on the air duct component; the radiator of independent wind channel is fixed in on the median septum, and it has the wind hole of fan to open on the underframe subassembly.

Among the high-power contravariant unit structure of low-voltage inverter, filter capacitor arranges on the median septum, power module fixes on radiator installation face, and positive negative copper is installed on filter capacitor and power module, and positive negative copper bar passes the center subassembly and positive negative copper fixed connection, and female row of stromatolite is installed on power module, and the output copper bar passes the center subassembly and female fixed connection of arranging of stromatolite.

Among the high-power contravariant unit structure of low-voltage inverter, on the fan was fixed in the dryer subassembly, can dismantle in a flexible way and take out, the dryer subassembly is fixed in on the underframe subassembly.

Among the high-power contravariant unit structure of low-voltage inverter, positive negative pole copper is bent in filter capacitor and power module electricity connection position department, saves riveting copper post structural design.

Among the high-power contravariant unit structure of low-voltage inverter, filter capacitor arranges on the median septum, exposes in independent wind channel.

Among the high-power contravariant unit structure of low-voltage inverter, fuse, positive negative pole copper bar and output copper bar set up at the case back.

Among the high-power contravariant unit structure of low-voltage inverter, underframe subassembly bottom is provided with the draw runner.

Among the high-power contravariant unit structure of low-voltage inverter, the fan structurally belongs to spiral case fan, compares in traditional axial fan, and the advantage lies in small, the noise is little, the amount of wind is big, and the effect is obvious among the forced air cooling system.

Drawings

Fig. 1 is a perspective view of a high-power inverter unit of a novel low-voltage frequency converter.

Fig. 2 is a schematic diagram of a heat dissipation mode of a high-power inverter unit structure of the novel low-voltage inverter.

Fig. 3 is a schematic diagram of the overall structure of a high-power inverter unit of the novel low-voltage frequency converter.

Fig. 4 is a schematic diagram of the structural arrangement of the independent air duct of the high-power inverter unit of the novel low-voltage frequency converter.

Fig. 5 is a schematic diagram of structural arrangement of a power module and a filter capacitor of a high-power inverter unit of the novel low-voltage frequency converter.

Fig. 6 is a schematic diagram of the external connection mode arrangement of the high-power inverter unit of the novel low-voltage frequency converter.

Fig. 7 is a schematic diagram of a bending structure of a positive and negative electrode copper plate of the novel low-voltage frequency converter.

Detailed Description

In order to make the technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. The specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the invention.

As shown in fig. 2-7, the high-power inverter unit structure of the frequency converter includes a bottom frame assembly, a middle frame assembly, an air duct assembly, a fixing plate, a left side plate, a right side plate, a casing cover plate, a middle partition plate, a printed board mounting plate, a partition plate, a base cover plate, a left base side plate, a right base side plate, a fan, a power module, a laminated busbar, a filter capacitor, a printed board, a fuse, positive and negative copper bars, positive and negative copper plates, an output copper bar, a handle, a lifting ring, a sliding bar, and a radiator.

As shown in the schematic diagram of fig. 2, the heat dissipation mode of the high-power inverter unit structure of the low-voltage inverter is air blowing.

As shown in the schematic diagram of fig. 3, the utility model discloses a schematic diagram of the high-power inverter unit structure of low-voltage inverter. The high-power inversion unit structure of the novel low-voltage frequency converter is divided into an upper part and a lower part: the upper part of the machine core assembly is provided with a radiator and a filter capacitor, the radiator and the filter capacitor are arranged on a middle partition plate, a power module is installed on the radiator, the radiator adopts an independent air duct design, the filter capacitor is exposed in the independent air duct, the working temperature of high-heat components is effectively reduced, and a fuse, a positive copper bar, a negative copper bar and an output copper bar are arranged on the back of the machine core assembly, so that the unit width is reduced; current is input into the filter capacitor from the positive and negative copper bars, the filter capacitor is electrically connected with the power module by adopting the positive and negative copper plates, and current output is realized from the laminated busbar and the output copper bar which are fixed on the power module; lower partial structure arranges for dismantling independent fan, including fan, underframe subassembly, draw runner and connecting cable, this fan structure simple to operate is convenient for maintain and change.

Fig. 4 is a schematic diagram illustrating an arrangement of an independent air duct structure of a high-power inverter unit of a novel low-voltage frequency converter. The bottom frame assembly, the air duct assembly, the partition plate, the middle frame assembly, the middle partition plate, the right side plate and the case cover plate jointly form an independent air duct of the unit, the fan is fixed on the air duct assembly, and the radiator is fixed on the middle partition plate.

Fig. 5 is a schematic diagram of structural arrangement of a power module and a filter capacitor of a high-power inverter unit of the novel low-voltage frequency converter. The filter capacitor is arranged on the middle partition plate, the power module is fixed on the radiator mounting surface, the positive and negative electrode copper plates are mounted on the filter capacitor and the power module, and the laminated busbar is mounted on the power module.

Fig. 6 is a schematic diagram of an external connection mode arrangement of a high-power inverter unit of the novel low-voltage frequency converter. The positive and negative copper bars pass through the middle frame assembly to be fixedly connected with the positive and negative copper plates, and the output copper bars pass through the middle frame assembly to be fixedly connected with the laminated busbar.

Fig. 7 is a schematic diagram of a bending structure of a positive and negative electrode copper plate of the novel low-voltage frequency converter. The positive and negative copper plates are bent at the electric connection position of the filter capacitor and the power module, and the structural design of riveting copper columns is omitted.

It is right to have used specific individual example above the utility model discloses expound, only be used for helping to understand the utility model discloses, not be used for the restriction the utility model discloses. The protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A high-power inversion unit structure of a low-voltage frequency converter comprises a sheet metal shell, components and functional components, wherein a bottom frame component (1), a middle frame component (2) and a wind barrel component (3) of the sheet metal shell are riveted components; the middle frame assembly (2) is positioned on the upper part structure, is fixed on the bottom frame assembly (1), is fixedly connected with the left side plate (5), the right side plate (6) and the case cover plate (7) in a surrounding mode through screws, the fixing plate (4) is fixed to the top of the middle frame assembly (2) through screws, the middle partition plate (8) is arranged in the middle of the middle frame assembly (2) and is fixed through screws, and the printed board mounting plate (9) and the partition plate (10) which are arranged inside the case are fixed to the middle partition plate (8) through screws; the air duct assembly (3) is fixed on the bottom frame assembly (1) through screws, the bottom frame assembly (1) is located in the lower portion structure and fixedly connected with the base cover plate (11), the left base side plate (12) and the right base side plate (13) in a surrounding mode through screws; the components comprise a fan (15), a power module (16), a laminated busbar (17), a filter capacitor (18), a printed board (19), a fuse (20), positive and negative copper bars (21), positive and negative copper plates (22) and an output copper bar (23); the functional parts comprise a handle (24), a lifting ring (25), a slide bar (26) and a radiator (14); the high-power unit is characterized in that the high-power unit structure is divided into an upper part and a lower part: the upper part of the machine core assembly is a machine core assembly, the radiator (14) and the filter capacitor (18) are arranged on the middle partition plate (8), the power module (16) is installed on the radiator (14), the radiator (14) adopts an independent air duct design, the filter capacitor (18) is exposed in the independent air duct, and the fuse (20), the positive and negative copper bars (21) and the output copper bar (23) are arranged on the back of the machine case; current is input into the filter capacitor (18) from the positive and negative copper bars (21), the filter capacitor (18) is electrically connected with the power module (16) by adopting positive and negative copper plates (22), and current output is realized by outputting from a laminated busbar (17) and an output copper bar (23) which are fixed on the power module (16); the lower part of the structure is arranged in a detachable independent fan mode and comprises a fan (15), a bottom frame assembly (1), a sliding strip (26) and a connecting cable.

2. The high power inverter unit structure of claim 1, wherein: the independent air duct consists of a bottom frame assembly (1), an air duct assembly (3), a partition plate (10), a middle frame assembly (2), a middle partition plate (8), a right side plate (6) and a case cover plate (7); the heat dissipation mode is blowing, and the fan (15) is fixed on the air duct component (3); the radiator (14) of the independent air duct is fixed on the middle partition plate (8), and the bottom frame component (1) is provided with an air passing hole of a fan (15).

3. The high power inverter unit structure of claim 1, wherein: the movement assembly structure is characterized in that a filter capacitor (18) is arranged on a middle partition plate (8), a power module (16) is fixed on a mounting surface of a radiator (14), positive and negative copper plates (22) are mounted on the filter capacitor (18) and the power module (16), positive and negative copper bars (21) penetrate through a middle frame assembly (2) and are fixedly connected with the positive and negative copper plates (22), a laminated busbar (17) is mounted on the power module (16), and an output copper bar (23) penetrates through the middle frame assembly (2) and is fixedly connected with the laminated busbar (17).

4. The high power inverter unit structure of claim 1, wherein: the lower structure is characterized in that the fan (15) is fixed on the air duct assembly (3), and the air duct assembly (3) is fixed on the bottom frame assembly (1).

5. The high power inverter unit structure of claim 1, wherein: the laminated busbar (17) is fixed on the power module (16).

6. The high power inverter unit structure of claim 1, wherein: and the positive and negative electrode copper plates (22) are bent at the electric connection position of the filter capacitor (18) and the power module (16).

7. The high power inverter unit structure of claim 1, wherein: the filter capacitor (18) is arranged on the middle partition plate (8) and is exposed in the independent air duct.

8. The high power inverter unit structure of claim 1, wherein: a handle (24) is arranged outside the case.

9. The high power inverter unit structure of claim 1, wherein: the top of the case is provided with a hanging ring (25).

10. The high power inverter unit structure of claim 1, wherein: a printed board mounting plate (9) is arranged inside the case, and the printed board (19) is mounted on the surface of the printed board mounting plate (9).

11. The high power inverter unit structure of claim 1, wherein: the bottom of the bottom frame component (1) is provided with a slide bar (26).

12. The high power inverter unit structure of claim 1, wherein: the fuse (20), the positive and negative copper bars (21) and the output copper bar (23) are arranged on the back of the case.

13. The high-power inverter unit structure according to claim 1, wherein the fan (15) is a volute fan.