A frequency converter with IP54 protection rating

Abstract

This utility model belongs to the field of frequency converter technology and discloses a frequency converter with an IP54 protection rating. It includes a protective housing and a supporting housing installed at the bottom of the protective housing. A circuit board is installed on the inner side of the protective housing, and multiple connectors corresponding to the circuit board are installed on the front side of the protective housing. Two protective meshes are symmetrically and longitudinally connected on the inner side of the supporting housing. A heat sink is installed between the two protective meshes on the bottom inner side of the supporting housing, and the bottom of the protective housing has a slot for inserting the top of the heat sink. A cooling fan is installed on the rear side of the bottom inner side of the supporting housing. Multiple capacitors are installed side-by-side on the bottom of the protective housing, located between the heat sink and the front protective mesh, and the capacitors are located inside the supporting housing. This solution solves the problem that while existing equipment can provide sufficient protection by preventing shaking due to collisions, it cannot guarantee good heat dissipation while providing IP54 protection.

Description

Technical Field

[0001] This utility model belongs to the field of frequency converter technology, specifically a frequency converter with IP54 protection level. Background Technology

[0002] With the rapid development of industry, frequency converters are increasingly being widely used across various sectors. However, many industrial environments are harsh, with air containing large amounts of dust and water vapor, and there is also the risk of water splashing when operating with water pumps. Frequency converters generally have insufficient protection performance, with low IP protection ratings, allowing dust and water vapor to easily enter and damage the equipment, affecting operational safety.

[0003] Meanwhile, a high-protection frequency converter with application number CN202420451600.9 includes: a protective box with a cover plate on the top; a rectangular plate fixedly installed at the lower end of the protective box near the interior, with multiple through holes on the outer surface of the rectangular plate; and a frequency converter body fixedly installed on the outer surface of the rectangular plate. The frequency converter body is fixedly installed on the rectangular plate inside the protective box, with a certain distance between the rectangular plate and the bottom of the protective box to prevent moisture absorption. The outer surface of the rectangular plate has multiple through holes, and a rectangular groove is formed at the lower end of the protective box. A placement box is movably embedded inside the rectangular groove, and desiccant is placed inside the placement box to improve the dryness inside the protective box. Then, two electric push rods are simultaneously activated to move clamping plates relative to each other, clamping and fixing the upper end of the frequency converter body to prevent shaking upon impact.

[0004] However, the following problems were found in the implementation of the relevant technologies: Although the existing equipment can avoid shaking due to collisions and provide sufficient protection, it cannot guarantee good heat dissipation while providing IP54 level protection. Utility Model Content

[0005] To address the problems mentioned in the background section, this invention provides a frequency converter with an IP54 protection rating, which offers the advantages of providing IP54 level protection while ensuring good heat dissipation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an IP protection level inverter, comprising a protective housing and a support housing installed at the bottom of the protective housing, a circuit board installed on the inner side of the protective housing, and multiple connectors corresponding to the circuit board installed on the front side of the protective housing, two protective meshes symmetrically and longitudinally connected on the inner side of the support housing, a heat sink located between the two protective meshes installed on the bottom inner side of the support housing, and a slot for inserting the top of the heat sink constructed on the bottom of the protective housing, a cooling fan installed on the rear side of the bottom inner side of the support housing, and multiple capacitors located between the heat sink and the front protective meshes installed side by side on the bottom of the protective housing, with the capacitors located on the inner side of the support housing.

[0007] Preferably, a limiting housing is fixedly sleeved on the upper part of the capacitor, and the limiting housing is connected to the corresponding side of the bottom of the protective housing.

[0008] Preferably, a waterproof rubber ring is bonded to the connection between the capacitor and the limiting housing, and insulating paper is bonded to the top of the capacitor.

[0009] Preferably, a waterproof layer is bonded to the connection between the radiator and the protective housing, and a reinforcing strip is installed at the connection between the radiator and the supporting housing.

[0010] Preferably, the inner bottom of the protective housing is provided with four support columns arranged in a rectangular shape, and the support columns are screwed to the top of the circuit board with fixing screws.

[0011] Preferably, a mounting housing is nested on the top rear side of the protective housing, and a keyboard is mounted on the inner bottom of the mounting housing, with a protective cover hinged to the top of the mounting housing.

[0012] Preferably, a sign is adhered to the top front side of the protective housing, and a protective film is adhered to the surface of the sign.

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

[0014] 1. This utility model uses a heat sink that is in full contact with the protective housing to quickly dissipate heat from the inside of the protective housing, and then uses a cooling fan to blow air onto it to achieve heat dissipation. During the air blowing process, the cooling fan will simultaneously provide heat dissipation for multiple capacitors. Since the capacitors are important heat-generating components of the frequency converter, designing them at the bottom of the protective housing can accelerate the heat dissipation of the frequency converter, thus ensuring the heat dissipation efficiency of this device.

[0015] 2. This utility model completely encloses the circuit board inside the protective shell to prevent water and dust from entering. At the same time, a waterproof layer is bonded at the connection between the heat sink and the protective shell, and waterproof rubber rings and insulating paper are added to the capacitors to ensure sealing, thus achieving IP54 level waterproof and dustproof performance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0018] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0019] Figure 4 This is a schematic diagram of the structure of the capacitor of this utility model.

[0020] In the diagram: 1. Protective housing; 2. Support housing; 3. Circuit board; 4. Connector; 5. Protective mesh; 6. Heat sink; 7. Cooling fan; 8. Capacitor; 9. Limiting housing; 10. Waterproof rubber ring; 11. Insulating paper; 12. Support column; 13. Fixing screw; 14. Mounting housing; 15. Sign. 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] like Figures 1 to 4As shown, this utility model provides an IP54 protection rating frequency converter, including a protective housing 1 and a support housing 2 installed at the bottom of the protective housing 1. Both the protective housing 1 and the support housing 2 are made of aluminum-zinc coated steel sheet. The aluminum-zinc alloy layer on the surface can effectively prevent corrosion from corrosive media. The connection positions are welded first and then painted, which has good sealing performance and can effectively prevent dust and water intrusion. The whole adopts a split design with upper and lower structures. The support housing 2 is ventilated and heat dissipated, while the protective housing 1 is sealed, so heat dissipation and sealing requirements can be met simultaneously. A circuit board 3 is installed on the inner side of the protective housing 1, and multiple connectors 4 corresponding to the circuit board 3 are installed on the front side of the protective housing 1. The connectors 4 are designed with PG heads. When in use, the cable outlet is sealed by tightening the knob. When wiring, rainwater will not flow along the cable to the inside of the protective housing 1. When disconnecting the cable, the knob can be loosened to increase the range of motion of the cable and protect the cable. The cable is not cut by the sheet metal holes when vibrating. Two protective nets 5 are symmetrically connected longitudinally on the inner side of the support housing 2 to improve the sealing of both sides of the support housing 2. The heat sink 6 located between the two protective nets 5 is installed on the inner bottom of the support housing 2 by multiple sets of screws. The bottom of the protective housing 1 has a slot for inserting the top of the heat sink 6, which can increase the contact area between the heat sink 6 and the protective housing 1, thereby accelerating the heat conduction speed inside the protective housing 1. A cooling fan 7 is installed on the rear side of the inner bottom of the support housing 2 by a mounting bracket. The cooling fan 7 can continuously blow air onto the heat sink 6 and capacitor 8 to achieve the heat dissipation effect. Multiple capacitors 8 are installed side by side on the bottom of the protective housing 1 between the heat sink 6 and the front protective net 5. The capacitors 8 are located on the inner side of the support housing 2. The design of the capacitors 8 at the bottom of the protective housing 1 allows them to be cooled by the cooling fan 7, which can accelerate the heat dissipation of the frequency converter.

[0023] Specifically, a limiting housing 9 is fixedly sleeved on the upper part of capacitor 8, and the limiting housing 9 is connected to the corresponding side of the bottom of protective housing 1. The operation of the frequency converter will generate vibration. If capacitor 8 is not protected, it will shake and fall. The limiting housing 9 can reduce the degree of shaking of capacitor 8.

[0024] Furthermore, a waterproof rubber ring 10 is bonded to the connection between capacitor 8 and limiting housing 9, and an insulating paper 11 is bonded to the top of capacitor 8. In conjunction with limiting housing 9, it can not only be waterproof, but also minimize the shaking of capacitor 8, and at the same time prevent it from being damaged by friction with limiting housing 9, thus protecting capacitor 8.

[0025] Furthermore, a waterproof layer is bonded to the connection between the radiator 6 and the protective shell 1 to ensure the sealing of the protective shell 1, and a reinforcing strip is welded to the connection between the radiator 6 and the supporting shell 2 to increase the stability of the radiator 6.

[0026] It is worth noting that four support pillars 12 are welded in a rectangular shape on the bottom inner side of the protective housing 1, and the support pillars 12 are screwed with fixing screws 13 to the top of the circuit board 3, which can raise the circuit board 3 and prevent it from directly contacting the protective housing 1 to avoid the possibility of short circuit.

[0027] It is worth noting that a mounting housing 14 is nested on the top rear side of the protective housing 1, and a keyboard (not shown in the figure) is installed on the inner bottom of the mounting housing 14. The device can be operated through the keyboard. A protective cover is hinged to the top of the mounting housing 14. The protective cover is closed to provide protection when the keyboard is not in use.

[0028] It is worth mentioning that a sign 15 is attached to the top front side of the protective housing 1. The sign 15 indicates the parameter information of the current equipment for easy understanding. The surface of the sign 15 is covered with a protective film to prevent the parameter information from becoming blurred due to wear.

[0029] The front, back, left, and right perspectives of this device are... Figure 1 The direction shown in the diagram is the reference.

[0030] Working principle: The device is placed as follows Figure 1 After installation, the inverter's circuit board 3 and capacitor 8 will generate a lot of heat when they are working. At this time, the heat sink 6, which is in full contact with the protective housing 1, can quickly dissipate the heat inside the protective housing 1. The cooling fan 7 continuously blows air onto the heat sink 6 to quickly remove the heat from the surface of the heat sink 6 to provide a cooling effect. At the same time, the cooling fan 7 will blow air onto the capacitor 8 to remove the heat from its surface. The heat dissipation efficiency of this device is guaranteed. A waterproof layer is bonded at the connection between the heat sink 6 and the protective housing 1 to improve the sealing. The capacitor 8 is reinforced by the limiting housing 9 and a waterproof rubber ring 10 is bonded at the connection. The top of the capacitor 8 is bonded with insulating paper 11 to further improve the sealing. The protective housing 1, where the circuit board 3 is located, ensures the sealing through the above design. This device can provide IP54 level protection and at the same time ensure good heat dissipation.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A frequency converter of IP54 protection class, comprising a protection housing (1) and a support housing (2) mounted at the bottom of the protection housing (1), characterized in that: The inner side of the protective housing (1) is equipped with a circuit board (3), and the front side of the protective housing (1) is equipped with multiple connectors (4) corresponding to the circuit board (3). The inner side of the support housing (2) is symmetrically connected with two protective nets (5). The bottom of the inner side of the support housing (2) is equipped with a radiator (6) located between the two protective nets (5), and the bottom of the protective housing (1) is constructed with a slot for inserting the top of the radiator (6). The rear side of the bottom of the inner side of the support housing (2) is equipped with a cooling fan (7). The bottom of the protective housing (1) is equipped with multiple capacitors (8) located between the radiator (6) and the front protective net (5), and the capacitors (8) are located inside the support housing (2).

2. A frequency inverter of IP54 protection class according to claim 1, characterized in that: The upper part of the capacitor (8) is fixedly sleeved with a limiting shell (9), and the limiting shell (9) is connected to the corresponding side of the bottom of the protective shell (1).

3. A frequency inverter of IP54 protection class according to claim 2, characterized in that: A waterproof rubber ring (10) is bonded to the connection between the capacitor (8) and the limiting housing (9), and an insulating paper (11) is bonded to the top of the capacitor (8).

4. A frequency inverter of IP54 protection rating according to claim 1, characterized in that: A waterproof layer is bonded to the connection between the radiator (6) and the protective shell (1), and a reinforcing strip is installed at the connection between the radiator (6) and the supporting shell (2).

5. A frequency inverter of IP54 protection rating according to claim 1 characterized in that: The inner bottom of the protective housing (1) is provided with four support columns (12) arranged in a rectangular shape, and the support columns (12) are screwed with fixing screws (13) to the top of the circuit board (3).

6. A frequency converter with IP54 protection rating according to claim 1, characterized in that: The protective housing (1) has a mounting housing (14) nested on its top rear side, and a keyboard is installed on the bottom inner side of the mounting housing (14). The top of the mounting housing (14) is hinged with a protective cover.

7. A frequency inverter of IP54 protection rating as claimed in claim 1, wherein: The protective housing (1) has a sign (15) attached to the top front side, and a protective film is attached to the surface of the sign (15).

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