High-protection frequency converter

Abstract

The utility model discloses a high-protection frequency converter, which comprises a box body, a rectification module, an inversion module, a heat dissipation assembly and a wiring terminal group, wherein the rectification module, the inversion module and the heat dissipation assembly are arranged in the box body; the wiring terminal group is arranged at the bottom of the box body; the rectification module and the inversion module are connected through a red copper connecting sheet. The heat dissipation assembly is installed on the rear sides of the rectification module and the inversion module, the heat dissipation assembly comprises a heat dissipation device and a plurality of fans, and the fans are horizontally installed at the bottom of the heat dissipation device; partition plates are arranged in the box body, and the rectification module, the inversion module, the wiring terminal group and the heat dissipation assembly are separated by the partition plates. According to the utility model, the internal components of the device can be prevented from being affected with damp and corroded by isolating air and guiding the air.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial automation control, in particular to a high-protection frequency converter. Background Art

[0002] A variable frequency drive (VFD) is a power control device that utilizes frequency conversion and microelectronics technology to control AC motors by varying the motor's operating power supply frequency. It primarily consists of a rectifier module (AC to DC), an inverter module (DC to AC), and a heat sink. The VFD adjusts the output power voltage and frequency by switching internal IGBTs, providing the required power supply voltage based on the motor's actual needs, thereby achieving energy savings and speed regulation. VFDs also offer numerous protection features, such as overcurrent, overvoltage, and overload protection. With the continuous advancement of industrial automation, VFDs have become increasingly widely used.

[0003] At present, most inverters use split cooling for heat dissipation and are equipped with air inlets and heat dissipation vents. For inverters installed in areas with heavy rain or outdoors near water sources, the air contains a lot of water vapor. The water vapor mixed in the air will enter through the air inlet, causing internal components to be corroded by moisture, especially affecting the connection devices between the rectifier module and the inverter module, resulting in short circuits and disconnections between the rectifier module and the inverter module, shortening the service life of the inverter. Utility Model Content

[0004] The purpose of this utility model is to provide a high-protection inverter that can prevent internal components from being corroded by moisture by isolating and guiding air. To achieve the above purpose, this utility model adopts the following technical solutions:

[0005] The utility model discloses a high-protection frequency converter, comprising a box body, a rectifier module, an inverter module, a heat dissipation component installed inside the box body, and a terminal group installed at the bottom of the box body.

[0006] The rectifier module and the inverter module are connected via a copper connecting piece.

[0007] The heat dissipation assembly is installed on the rear side of the rectifier module and the inverter module, and the heat dissipation assembly includes: a radiator and a fan. There are multiple fans and they are horizontally installed at the bottom of the radiator.

[0008] A partition is provided inside the box body, and the partition separates the rectifier module, the inverter module, the terminal group and the heat dissipation component.

[0009] Furthermore, the box body is provided with a hollow protective plate on the top of the heat dissipation component.

[0010] Preferably, the side panels on both sides of the box body are provided with a plurality of heat dissipation holes arranged in an array below the position of the hollow protective net.

[0011] Furthermore, the partition of the box body is provided with a plurality of circular air guide ports at the top.

[0012] Preferably, the partition is an aluminum alloy heat conducting plate.

[0013] Furthermore, a display operation panel is installed on the front of the box.

[0014] Furthermore, the rectifier module is provided with at least one first mounting hole at the connection with the copper connecting piece, and a third mounting hole corresponding to the first mounting hole is provided at one end of the copper connecting piece. The rectifier module and the copper connecting piece are fixed by installing bolts in the first mounting hole and the third mounting hole.

[0015] The inverter module is provided with at least one second mounting hole at the connection with the copper connecting piece, and the other end of the copper connecting piece is provided with a fourth mounting hole corresponding to the second mounting hole. The inverter module and the copper connecting piece are fixed by installing bolts in the second mounting hole and the fourth mounting hole.

[0016] Preferably, the length of the copper connecting piece is 16-60 mm, and it is bent, and the width of the copper connecting piece is 30-35 mm, and the thickness is 2-3 mm.

[0017] Preferably, the surface of the copper connecting piece is plated with a layer of metal tin film.

[0018] After adopting the above technical solution, the utility model has the following effects:

[0019] 1. The utility model sets the terminal group at the bottom of the box, and accelerates the air from the bottom of the box through the fan and discharges it upward through the radiator, so as to avoid moisture corrosion of the internal components of the device by isolating and guiding the air.

[0020] 2. The utility model divides the inner part of the box into two spaces by setting a partition, so that the rectifier module, inverter module and terminal group can be separated from the heat dissipation component, reducing the contact between the space where the rectifier module, inverter module and terminal group are located and the air.

[0021] 3. The utility model uses a copper connecting piece with strong corrosion resistance to connect the rectifier module and the inverter module. While ensuring good conductive effect, it avoids the connectors between the rectifier module and the inverter module from being corroded by moisture due to excessive water vapor in the air, thereby preventing short circuits, disconnections, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural diagram of the utility model.

[0023] Figure 2 This is the internal structure diagram of the utility model.

[0024] Figure 3 It is a top view of the utility model.

[0025] Figure 4 for Figure 3 AA section view.

[0026] Figure 5 This is the air flow direction diagram of the present utility model.

[0027] Figure 6 for Figure 2 Partial exploded view.

[0028] Figure 7 for Figure 6 Enlarged view of point B.

[0029] Main component symbols:

[0030] 1: Cabinet, 11: Display operation panel, 12: Hollow protective plate, 13: Side panel, 131: Heat dissipation hole, 14: Partition, 141: Air guide port, 2: Rectifier module, 21: First mounting hole, 3: Inverter module, 31: Second mounting hole, 4: Heat dissipation assembly, 41: Radiator, 42: Fan, 5: Terminal group, 6: Copper connecting piece, 61: Third mounting hole, 62: Fourth mounting hole. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0032] like Figures 1 to 4 As shown, the utility model discloses a high-protection inverter, comprising: a box 1 and a rectifier module 2, an inverter module 3, a heat dissipation component 4 installed inside the box 1, and a terminal group 5 installed at the bottom of the box 1.

[0033] The rectifier module 2 and the inverter module 3 are connected via a copper connecting piece 6 .

[0034] The heat dissipation assembly 4 is installed at the rear side of the rectifier module 2 and the inverter module 3 , and includes a radiator 41 and a fan 42 . There are a plurality of fans 42 , which are horizontally installed at the bottom of the radiator 41 .

[0035] A partition 14 is provided inside the housing 1 to separate the rectifier module 2, the inverter module 3, the terminal group 5 and the heat dissipation assembly 4. In this embodiment, a display operation panel 11 is installed on the front of the housing 1.

[0036] Secondly, in this embodiment, the box body 1 is equipped with a hollow protective plate 12 on the top of the heat dissipation component 4. In addition, the side panels 13 on both sides of the box body 1 are provided with a plurality of heat dissipation holes 131 arranged in an array below the position of the hollow protective net 12.

[0037] In addition, combined Figure 5 As shown, the partition 14 of the housing 1 is an aluminum alloy heat-conducting plate, and the partition 14 is provided with a plurality of circular air guide ports 141 at the top. When the fan 42 in the heat dissipation assembly 4 starts running, accelerating the upward movement of cold air, the hot air at the top of the heat dissipation assembly 4 flows rapidly due to heat dissipation, and the air pressure decreases. The hot air in the space where the rectifier module 2, inverter module 3, and terminal group 5 are located will be discharged through the air guide ports 141 at the top of the partition 14 due to the pressure difference. This reduces the contact between the space where the rectifier module 2, inverter module 3, and terminal group 5 are located and the air, and prevents moisture from remaining in the air and causing moisture corrosion to the device components.

[0038] In addition, if Figure 6 and Figure 7 As shown, in this embodiment, the rectifier module 2 is vertically provided with two first mounting holes 21 at the connection with the copper connecting piece 6, and a third mounting hole 61 corresponding to the first mounting hole 21 is provided at one end of the copper connecting piece 6. The rectifier module 2 and the copper connecting piece 6 are fixed by installing bolts in the first mounting hole 21 and the third mounting hole 61.

[0039] At the same time, the inverter module 3 is horizontally provided with two second mounting holes 31 at the connection with the copper connecting plate 6, and the other end of the copper connecting plate 6 is provided with a fourth mounting hole 62 corresponding to the second mounting hole 31. The inverter module 3 and the copper connecting plate 6 are fixed by installing bolts in the second mounting holes 31 and the fourth mounting holes 62.

[0040] In this embodiment, the length of the copper connecting piece 6 is 16-60 mm, and is bent, and the width of the copper connecting piece 6 is 30-35 mm, and the thickness is 2-3 mm. In other embodiments, the copper connecting piece 6 is coated with a layer of metal tin film.

[0041] The above description is only a preferred embodiment of the present invention. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A high protection frequency converter, characterized in that: include: A box (1), a rectifier module (2), an inverter module (3), a heat dissipation component (4) installed inside the box (1), and a terminal group (5) installed at the bottom of the box (1); The rectifier module (2) and the inverter module (3) are connected via a copper connecting piece (6); The heat dissipation assembly (4) is installed on the rear side of the rectifier module (2) and the inverter module (3), and the heat dissipation assembly (4) includes: a radiator (41) and a fan (42), wherein a plurality of fans (42) are provided and horizontally installed at the bottom of the radiator (41); A partition (14) is provided inside the box (1), and the partition (14) separates the rectifier module (2), the inverter module (3), the terminal group (5) and the heat dissipation component (4).

2. A high protection frequency converter according to claim 1, characterized in that: The box body (1) is provided with a hollow protective plate (12) on the top of the heat dissipation component (4).

3. A high protection frequency converter according to claim 2, characterized in that: The side panels (13) on both sides of the box body (1) are provided with a plurality of heat dissipation holes (131) arranged in an array below the position of the hollow protective plate (12).

4. The high protection frequency converter according to claim 1, characterized in that: The partition (14) of the box body (1) is provided with a plurality of circular air guide ports (141) at the top.

5. A high protection frequency converter according to claim 4, characterized in that: The partition (14) is an aluminum alloy heat conducting plate.

6. The high protection frequency converter according to claim 1, characterized in that: A display operation panel (11) is installed on the front of the box (1).

7. The high protection frequency converter according to claim 1, characterized in that: The rectifier module (2) is provided with at least one first mounting hole (21) at a connection point with the copper connecting piece (6); one end of the copper connecting piece (6) is provided with a third mounting hole (61) corresponding to the first mounting hole (21); the rectifier module (2) and the copper connecting piece (6) are fixed by installing bolts in the first mounting hole (21) and the third mounting hole (61).

8. The high protection frequency converter according to claim 7, characterized in that: The inverter module (3) is provided with at least one second mounting hole (31) at a connection point with the copper connecting piece (6); the other end of the copper connecting piece (6) is provided with a fourth mounting hole (62) corresponding to the second mounting hole (31); the inverter module (3) and the copper connecting piece (6) are fixed by installing bolts in the second mounting hole (31) and the fourth mounting hole (62).

9. A high protection frequency converter according to any one of claims 1 to 8, characterized in that: The length of the copper connecting piece (6) is 16-60 mm and is bent, and the width of the copper connecting piece (6) is 30-35 mm and the thickness is 2-3 mm.

10. The high protection frequency converter according to claim 9, characterized in that: The copper connecting piece (6) is coated with a layer of metal tin film on its surface.

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