Waterproof frequency converter

Abstract

The utility model discloses a waterproof frequency converter, which relates to the technical field of frequency converters and comprises a mainframe box, a wire inlet box and a radiator box, the wire inlet box is mounted on the side face of the mainframe box, the radiator box is mounted on the back face of the mainframe box, the three box bodies are assembled in a waterproof sealing manner, power distribution components are mounted in the wire inlet box, and frequency conversion power components are mounted in the mainframe box. The radiator box and the mainframe box are sealed and isolated in a waterproof mode through a partition plate, the radiator is fixedly installed on the partition plate, the radiator and the partition plate are assembled in a waterproof and sealing mode through a sealing rubber strip, the heat conduction plate end of the radiator is located in the mainframe box, and the radiating fin end of the radiator is located in the radiator box. A waterproof fan is installed on the box wall of the radiator box corresponding to radiating fins of the radiator, an air outlet is formed in the top wall of the radiator box, and a radiator box door capable of being opened is arranged on the radiator box. The radiator is high in structural layout concentration degree, the problem that the radiator is not easy to maintain is solved, and the installation and maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of frequency converters, and more specifically to a waterproof frequency converter. Background Art

[0002] The inverter is a commonly used power control device in modern times. With the continuous improvement of the degree of industrial automation, the inverter has been widely used. In some cases, the inverter needs to be installed outdoors. The existing inverters used outdoors are all installed in a large cabinet. The heat dissipation of the inverter is concentrated in the cabinet, and the heat cannot be discharged to the outside of the cabinet in time, which causes the inverter to fail due to high temperature, greatly reducing the life of the inverter components. Especially when the inverter is placed in a harsh working environment, the inside of the inverter and the radiator are easily blocked by dust and dirt. The existing inverters cannot simply and conveniently clean the radiator, which greatly reduces the heat dissipation effect of the machine and the electronic components are easily damaged by aging. Summary of the invention

[0003] Aiming at the problems in the prior art that the waterproof cabinet of an outdoor frequency converter has an increased volume, an unreasonable layout, and inconvenient maintenance of a radiator, the utility model provides a waterproof frequency converter.

[0004] The technical solution adopted by the utility model is as follows: a waterproof inverter, comprising a chassis, the chassis comprising an independent main chassis, an incoming wire box, and a radiator box, the incoming wire box is installed on the side of the main chassis, the radiator box is installed on the back of the main chassis, and the main chassis, the incoming wire box, and the radiator box are assembled in a waterproof and sealed manner by a sealing strip;

[0005] The incoming line box is equipped with power distribution components, a box door is provided on the front of the incoming line box, the box door and the box body are waterproof and sealed, and a cable waterproof connector is provided on the bottom of the incoming line box;

[0006] The main box is equipped with frequency conversion power components, and a main box door is provided on the front of the main box, and the main box door is waterproof and sealed with the main box body;

[0007] The radiator box is waterproof and sealed from the main box by a partition, the radiator is fixedly mounted on the partition, and the radiator and the partition are waterproof and sealed by a sealing strip, the heat conducting plate end of the radiator is located in the main box, the heat generating components in the main box are connected to the heat conducting plate end of the radiator, the heat sink end of the radiator is located in the radiator box, a waterproof fan is installed on the radiator box wall corresponding to the heat sink of the radiator, an exhaust port is opened on the top wall of the radiator box, and an openable radiator box door is provided on the radiator box.

[0008] Furthermore, a top cover is installed on the top of the chassis through a bracket, and the top cover covers the exhaust port on the radiator box.

[0009] Furthermore, the radiator box door is arranged on a side directly opposite to the cooling fins of the radiator, and the waterproof fan is installed on the radiator box door.

[0010] Furthermore, the heat sink fins of the heat sink are arranged vertically.

[0011] Furthermore, it also includes a mounting base, and the chassis is fixedly mounted on the mounting base.

[0012] Furthermore, a temperature sensor for detecting the temperature of the radiator is installed at the heat conduction plate end of the radiator, and an alarm is installed on the chassis. When the temperature detected by the temperature sensor exceeds a set value, the alarm is activated.

[0013] The utility model provides a waterproof inverter that can be placed directly outdoors, which concentrates the incoming box installed with distribution components such as current transformers and circuit breakers into the inverter, so that the structural layout has a high degree of concentration; the distribution components and the frequency conversion power components are sealed and installed in the incoming box and the main box respectively, rain and dust cannot enter the box, and the high protection requirements of the entire equipment are achieved; the radiator is independently installed in the radiator box and waterproofly sealed with the main box to form an independent installation and maintenance area, and the radiator can be dusted, blown or sprayed with water by opening the radiator box door, avoiding the inability to maintain the radiator due to heating of the device or the influence of structural parts, thereby improving the assemblability and maintainability of the product and reducing the installation and maintenance costs; if dust accumulates on the radiator under harsh working conditions, affecting the heat dissipation efficiency of the components, a dust removal alarm can be issued through the alarm. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the main box door of the utility model in an open state.

[0016] Figure 3 It is a schematic diagram of the utility model in which the door of the incoming line box is open.

[0017] Figure 4 It is a schematic diagram of the radiator box door of the utility model in an open state.

[0018] In the figure: main box 1, main box door 101, incoming line box 2, incoming line box door 201, cable waterproof connector 202, radiator box 3, exhaust vent 301, radiator 302, waterproof fan 303, radiator box door 304, mounting base 4, top cover 5, alarm 6. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively and carefully below in conjunction with the accompanying drawings and preferred embodiments of the specification, but the protection scope of the present invention is not limited to the following specific embodiments.

[0020] like Figure 1 As shown, a waterproof inverter of this embodiment includes a chassis and a mounting base 4, and the chassis is fixedly mounted on the mounting base 4. The chassis consists of three independent boxes, namely, a main chassis 1, an incoming line box 2, and a radiator box 3, wherein the incoming line box 2 is mounted on the side of the main chassis 1, and the radiator box 3 is mounted on the back of the main chassis 1. The main chassis 1, the incoming line box 2, and the radiator box 3 are assembled by sealing strips for waterproof sealing.

[0021] See also Figure 3 The incoming box 2 is installed with current transformers, circuit breakers, keyboards, expansion cards, control panels and other power distribution components. A incoming box door 201 is provided on the front of the incoming box 2. The incoming box door 201 is waterproofly sealed with the incoming box 2 body. A cable waterproof connector 202 is provided on the bottom of the incoming box 2.

[0022] See also Figure 2 The main box 1 is installed with frequency conversion power components such as a rectifier bridge, a contactor, a resistor, a DC reactor, a capacitor, a laminated busbar, and an IGBT. A main box door 101 is provided on the front of the main box 1, and the main box door 101 is waterproof and sealed with the main box body.

[0023] See also Figure 4 The radiator box 3 is waterproof and sealed from the main box 1 by a partition, the radiator 302 is fixedly mounted on the partition, and the radiator 302 and the partition are waterproof and sealed by a sealing strip, the heat conduction plate end of the radiator 302 is located in the main box 1, the heating components in the main box 1 are connected to the heat conduction plate end of the radiator 302, the heat sink end of the radiator 302 is located in the radiator box 3, a waterproof fan 303 is installed on the wall of the radiator box 3 corresponding to the heat sink of the radiator 302, an exhaust port 301 is opened on the top wall of the radiator box 3, and an openable radiator box door 304 is provided on the radiator box 3.

[0024] In this embodiment, the radiator box door 304 is set on the side opposite to the heat sink of the radiator 302, and the waterproof fan 303 is installed on the radiator box door 304. After the radiator box door 304 is closed, the waterproof fan 303 blows towards the radiator 302, and the heat is discharged through the exhaust port 301.

[0025] In order to prevent debris from falling into the radiator box 3 through the air outlet 301 , a top cover 5 is further installed on the top of the case through a bracket, and the top cover 5 covers the air outlet 301 on the radiator box 3 .

[0026] In this embodiment, the heat sinks of the heat sink 302 are arranged vertically, which is more conducive to air circulation and improves the heat dissipation effect.

[0027] In this embodiment, a temperature sensor for detecting the temperature of the radiator 302 is installed at the heat conducting plate end of the radiator 302, and an alarm 6 is installed on the chassis. When the temperature detected by the temperature sensor exceeds a set value, the alarm 6 is activated. In harsh working conditions, if dust accumulates on the radiator and affects the heat dissipation efficiency of components, the alarm 6 can issue a dust removal alarm prompt.

[0028] With the help of the teachings in the foregoing description and the related drawings, a person skilled in the art will be able to think of many modifications and other embodiments of the present invention. Therefore, it is to be understood that the present invention is not limited to the specific embodiments disclosed, and modifications and other embodiments are considered to be included within the scope of the appended claims. Although specific terms are used herein, they are used only in a general and descriptive sense and not for limitation.

Claims

1. A waterproof inverter, comprising a chassis, characterized in that: The chassis comprises an independent main chassis (1), an incoming cable box (2), and a radiator box (3); the incoming cable box (2) is mounted on the side of the main chassis (1), and the radiator box (3) is mounted on the back of the main chassis (1); the main chassis (1), the incoming cable box (2), and the radiator box (3) are assembled in a waterproof and sealed manner by means of a sealing strip; Power distribution components are installed in the incoming line box (2), a incoming line box door (201) is arranged on the front of the incoming line box (2), the incoming line box door (201) and the incoming line box (2) body are waterproofly sealed, and a cable waterproof connector (202) is arranged on the bottom of the incoming line box (2); The main box (1) is equipped with variable frequency power components, and a main box door (101) is provided on the front of the main box (1), and the main box door (101) and the main box body (1) are in waterproof and sealed cooperation; The radiator box (3) and the main box (1) are isolated by a partition for waterproof sealing, the radiator (302) is fixedly mounted on the partition, and the radiator (302) and the partition are assembled by a sealing strip for waterproof sealing, the heat conducting plate end of the radiator (302) is located in the main box (1), the heat generating components in the main box (1) are connected to the heat conducting plate end of the radiator (302), the heat sink end of the radiator (302) is located in the radiator box (3), a waterproof fan (303) is installed on the wall of the radiator box (3) corresponding to the heat sink of the radiator (302), an exhaust port (301) is opened on the top wall of the radiator box (3), and an openable radiator box door (304) is provided on the radiator box (3).

2. A waterproof inverter as claimed in claim 1, characterized in that: A top cover (5) is installed on the top of the chassis via a bracket, and the top cover (5) covers the air outlet (301) on the radiator box (3).

3. A waterproof inverter as claimed in claim 1, characterized in that: The radiator box door (304) is arranged on a side directly opposite to the cooling fins of the radiator (302), and the waterproof fan (303) is mounted on the radiator box door (304).

4. A waterproof inverter as claimed in claim 1, characterized in that: The heat sink (302) has heat sink fins arranged vertically.

5. A waterproof inverter as claimed in claim 1, characterized in that: It also comprises a mounting base (4), and the chassis is fixedly mounted on the mounting base (4).

6. A waterproof inverter according to any one of claims 1 to 5, characterized in that: A temperature sensor for detecting the temperature of the radiator (302) is installed at the heat conduction plate end of the radiator (302), and an alarm (6) is installed on the chassis. When the temperature detected by the temperature sensor exceeds a set value, the alarm (6) is activated.

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