Assembled frequency converter and assembly method thereof

Abstract

The present invention relates to the technical field of frequency converter assembly, and provides an assembled frequency converter and an assembly method thereof, including an inner shell; an outer shell, located outside the inner shell, and four limit racks are arranged above the inner shell to expose the internal space, so as to facilitate the assembly and disassembly and maintenance of the internal components; a filter plate, located behind the outer shell, is an inner and outer double-layer structure for intercepting external dust and impurities, and the widened and enlarged structure is used to cover more areas to expand the heat dissipation range; a side shell, symmetrically distributed inside the outer shell, located between the limit rack and the inner wall of the outer shell, and a heat dissipation fan and an arc guide plate are arranged at the rear and front of the side shell, respectively, and the arc guide plate is used to promote the airflow to flow backward, so as to achieve the effect of blowing out hot air from front to back in the frequency converter. The present invention can directly assemble the components of the frequency converter on the outside, which is convenient for the compact layout of the components and is also conducive to subsequent maintenance and replacement; in addition, the assembled frequency converter can realize the dual heat dissipation treatment of uniform cooling and exhaust in multiple internal areas, effectively alleviating the overheating damage caused by the compact components.

Description

Technical Field

[0001] The present invention relates to the technical field of frequency converter assembly, and more specifically, to an assembled frequency converter and an assembly method thereof. Background Art

[0002] High-voltage frequency converter is an electric energy control device that uses the on-off function of power semiconductor devices to convert industrial frequency power into another frequency. It changes the output frequency and output voltage to control the speed of AC high-voltage motors and is widely used in different production areas.

[0003] At present, the internal structure of the inverter is usually designed to be relatively compact, which helps to reduce the size of the inverter and make it easier to install and integrate into various industrial applications;

[0004] However, due to the limited space, production and maintenance personnel may need to spend more time and energy to install, disassemble and replace the component, which will also make the inverter more sensitive to vibration and noise during operation. The densely packed parts will also lead to limited heat dissipation space, causing the component to overheat, thus affecting the performance and life of the inverter.

[0005] In order to solve the above problems, the present application proposes an assembled frequency converter and an assembly method thereof. Summary of the invention

[0006] The object of the present invention is to provide an assembled frequency converter and an assembly method thereof, which can quickly complete the assembly and prevent the components from overheating.

[0007] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0008] An assembled frequency converter comprises an inner shell;

[0009] The outer shell is located outside the inner shell, and four limit frames are provided above the inner shell to expose the internal space to facilitate assembly, disassembly and maintenance of internal components;

[0010] The filter plate is located at the rear of the housing. It is a double-layer structure with inner and outer layers to intercept external dust and impurities. The widened and enlarged structure is used to cover more areas to expand the heat dissipation range.

[0011] The side shell is symmetrically distributed inside the shell and is located between the limit frame and the inner wall of the shell. A heat dissipation fan and an arc guide plate are respectively provided at the rear and front of the side shell. The arc guide plate is used to promote the airflow to flow backward, so as to achieve the effect of blowing out hot air from front to back in the inverter.

[0012] On the other hand, the assembly method of the inverter is as follows:

[0013] S1: In the preparation stage, four limit frames are installed behind the vertical plate on the inner shell to form an exposed structure of the internal space;

[0014] S2: During the assembly phase, the inverter components are directly assembled into the inner shell through the exposed inner shell;

[0015] S3: Connect the slide rail at the bottom of the inner shell to the support inside the outer shell, and the inverter components are enclosed by the outer shell;

[0016] S4: Slidingly installing the side shell with the built-in cooling unit into the inner part of the outer shell, and positioning it by the bracket and the baffle;

[0017] S5: In the use stage, the protruding plate mechanism at the rear of the side shell blocks the openings on both sides of the rear of the shell, and the widened and enlarged filter plate is installed at the rear of the shell;

[0018] S6: At this time, the cooling fan blows air into the side shell, which is cooled by the cooling unit and guided by the arc guide plate, and then blown out from the front surface of the inverter components to the rear, increasing the heat dissipation area and speed. At the same time, the blowing force on the filter plate can drive dust and impurities to be discharged outward.

[0019] Beneficial effects of the present invention:

[0020] The present invention can directly assemble components on the inner shell with the inner space exposed, and can also directly take out the inner shell to repair and replace the components inside, which can not only improve the assembly efficiency during the production of the inverter, but also facilitate the maintenance personnel to repair and replace the components in a small space, saving more time and energy, and having a better use effect.

[0021] The present invention can blow air from front to back inside the inverter through the combined structure of the side shell and the inner shell. Combined with the heat dissipation channel enlarged by the filter plate, the hot air can be directly discharged to the rear, directly forming a sufficient heat dissipation effect inside. It is not only convenient to assemble, but also improves the heat dissipation performance in a small space, effectively prevents components from overheating, and improves the performance and life of the inverter.

[0022] The present invention utilizes the airflow flowing from front to back, combined with the double-layer structure of the filter plate, to intercept external dust impurities in real time when the inverter is in use, and blow the dust impurities outward under the action of the airflow, thereby forming a dust-proof effect to prevent dust impurities from entering and accumulating in a small space, causing heat accumulation that cannot be discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a schematic diagram of the overall assembly structure of the inverter housing of the present invention;

[0025] Figure 2 for Figure 1 The front structure diagram of the inverter housing overall appearance;

[0026] Figure 3 for Figure 1 The overall appearance of the inverter housing and the rear structure diagram;

[0027] Figure 4 for Figure 1 Schematic diagram of the appearance structure of the inverter inner shell;

[0028] Figure 5 for Figure 1 A schematic diagram of the combined appearance structure of adjacent side shells;

[0029] Figure 6 for Figure 1 A schematic diagram of the structure of the inverter adjacent housings in the overall exploded state;

[0030] Figure 7 for Figure 1 Schematic diagram of the internal structure of the side shell;

[0031] Figure 8 for Figure 6 A partial enlarged structural schematic diagram of part A;

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0033] In the figure: 100, inner shell; 101, inner door panel; 102, limit frame; 103, top plate;

[0034] 200, housing; 201, outer door panel; 202, filter plate; 203, bracket; 204, support; 205, baffle; 206, slideway;

[0035] 300, side shell; 301, cooling fan; 302, side groove; 303, arc guide plate; 304, connecting plate; 305, transfer tube; 306, cooling unit. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figure 1 - Figure 8 As shown, the present invention provides an assembled frequency converter and an assembling method thereof.

[0038] Embodiment 1

[0039] An assembled frequency converter includes an inner shell 100,

[0040] The outer shell 200 is located outside the inner shell 100. Four limit frames 102 are provided above the inner shell 100 to expose the internal space and facilitate assembly, disassembly and maintenance of the internal components.

[0041] The filter plate 202 is located at the rear of the housing 200 and is a double-layer structure for intercepting external dust and impurities. The widened and enlarged structure is used to cover more areas to expand the heat dissipation range;

[0042] The side shell 300 is symmetrically distributed inside the outer shell 200, and is located between the limit frame 102 and the inner wall of the outer shell 200. The rear and front of the side shell 300 are respectively provided with a heat dissipation fan 301 and an arc guide plate 303. The arc guide plate 303 is used to promote the airflow to flow backwards, so as to achieve the effect of blowing out hot air from front to back in the inverter.

[0043] The present embodiment provides a converter housing structure which can be easily assembled and has strong heat dissipation. By utilizing the combination of the inner shell 100 with exposed space and the outer shell 200, the converter components can be produced and repaired directly on the outside and then simply merged. In addition, after the assembly, the side shell 300 and the heat dissipation fan 301 behind it are utilized. Under the guidance of the side shell 300 and the arc-shaped guide plate 303, an airflow trajectory from front to back is formed inside the converter, so that the hot air is discharged backwards immediately. During this period, the filter plate 202 can also be cleaned to discharge dust.

[0044] Among them, an inner door panel 101 is provided in front of the inner shell 100, and an outer door panel 201 is provided in front of the outer shell 200. After the inner shell 100 and the outer shell 200 are combined, the inner door panel 101 is covered inside the outer door panel 201, and a top plate 103 is provided above the inner shell 100, which is used to block the space between the two adjacent limit frames 102 above, and is also used to limit the airflow to a certain area to prevent overflow from affecting the heat dissipation effect.

[0045] Among them, brackets 203 are provided on both sides of the interior of the outer shell 200 near the bottom to support the side shell 300. A baffle 205 is provided in front of the bracket 203 to press against the outer wall of the arc-shaped guide plate 303 to form a positioning, and then combined with the side wall of the limit frame 102, the side shell 300 can be clamped to fix it.

[0046] Among them, supports 204 are provided at the two sides of the bottom of the outer shell 200, and a slide 206 is opened inside it for slidingly docking with the slide rail at the bottom of the inner shell 100. Therefore, the inner shell 100 can be taken out separately to repair and replace the internal components, and the positioning and assembly effect can be achieved, reducing the difficulty of operation.

[0047] Among them, a side groove 302 is opened on the front side of the side shell 300 adjacent to the inner shell 100. After the inner shell 100 and the outer shell 200 are assembled, the side groove 302 is located behind the vertical plate on the inner shell 100, so that the airflow directly acts on the front surface of the components in the inverter after being ejected, and covers the entire area of ​​its front surface, thereby achieving uniform heat dissipation effect in multiple areas.

[0048] Among them, a cooling unit 306 is provided near the rear of the interior of the side shell 300 for reducing the temperature of the airflow. A transfer pipe 305 is provided above the cooling unit 306 for connecting the cooling units 306 between two adjacent side shells 300, so that the airflow in the two adjacent side shells 300 is in a low-temperature state compared to the hot air inside the inverter, so as to form heat exchange and reduce the heat in advance.

[0049] A connecting plate 304 is provided above the side shells 300 for connecting adjacent side shells 300 .

[0050] Embodiment 2

[0051] An assembly method of a frequency converter is as follows:

[0052] S1: In the preparation stage, four limit frames 102 are installed behind the vertical plate body on the inner shell 100 to form an internal space exposed structure;

[0053] S2: Assembling stage, the inverter components are directly assembled in the inner shell 100 through the exposed inner shell 100;

[0054] S3: docking the slide rail at the bottom of the inner shell 100 with the support 204 in the outer shell 200, so that the inverter components are enclosed by the outer shell 200;

[0055] S4: Slidingly installing the side shell 300 with the built-in cooling unit 306 into the interior of the outer shell 200, and positioning it by the bracket 203 and the baffle 205;

[0056] S5: In the use stage, the protruding plate mechanism at the rear of the side shell 300 blocks the openings on both sides of the rear of the outer shell 200, and the widened and enlarged filter plate 202 is installed at the rear of the outer shell 200;

[0057] S6: At this time, the cooling fan 301 blows air into the side shell 300, and after being cooled by the cooling unit 306 and guided by the arc-shaped guide plate 303, it is blown backward from the front surface of the inverter components, increasing the heat dissipation area and speed, and the blowing force formed on the filter plate 202 can drive dust and impurities to be discharged outward.

[0058] It can be understood that the present invention can directly assemble the components of the inverter on the outside, which is convenient for the compact layout of the components and is conducive to subsequent maintenance and replacement; in addition, the assembled inverter can achieve dual heat dissipation treatment of uniform cooling in multiple internal areas and exhaust, effectively alleviating overheating damage caused by compact components.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0060] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An assembled frequency converter, comprising an inner housing (100), characterized in that: The outer shell (200) is located outside the inner shell (100), and four limit frames (102) are provided above the inner shell (100) for exposing the internal space to facilitate assembly, disassembly and maintenance of internal components; The filter plate (202) is located at the rear of the housing (200) and is a double-layer structure of inner and outer layers for intercepting external dust and impurities. The widened and enlarged structure is used to cover more areas to expand the heat dissipation range; The side shell (300) is symmetrically distributed inside the outer shell (200) and is located between the limiting frame (102) and the inner wall of the outer shell (200). A heat dissipation fan (301) and an arc-shaped guide plate (303) are respectively provided at the rear and front of the side shell (300). The arc-shaped guide plate (303) is used to promote the airflow to flow backward, so as to achieve the effect of blowing out hot air from front to back in the inverter.

2. The assembled frequency converter according to claim 1, characterized in that: An inner door panel (101) is provided in front of the inner shell (100), an outer door panel (201) is provided in front of the outer shell (200), and the inner door panel (101) is covered inside the outer door panel (201).

3. The assembled frequency converter according to claim 2, characterized in that: A top plate (103) is provided above the inner shell (100) for sealing the space between two adjacent limiting frames (102) above.

4. The assembled frequency converter according to claim 3, characterized in that: Brackets (203) are provided on both sides of the inner part of the outer shell (200) near the bottom, for supporting the side shell (300), and a baffle (205) is provided in front of the bracket (203) to press against the outer wall of the arc-shaped guide plate (303) for positioning.

5. The assembled frequency converter according to claim 4, characterized in that: The bottom of the outer shell (200) is provided with supports (204) near both sides, and a slideway (206) is provided inside the outer shell for slidingly docking with the slide rail at the bottom of the inner shell (100), so that the inner shell (100) can be taken out separately to repair and replace the components inside.

6. The assembled frequency converter according to claim 5, characterized in that: A side groove (302) is provided at the front of the side shell (300) adjacent to the side of the inner shell (100); after the inner shell (100) and the outer shell (200) are assembled, the side groove (302) is located behind the vertical plate on the inner shell (100), so that the airflow directly acts on the front surface of the components in the inverter after being ejected.

7. The assembled frequency converter according to claim 6, characterized in that: A cooling unit (306) is provided inside the side shell (300) near the rear, for reducing the temperature of the airflow.

8. The assembled frequency converter according to claim 7, characterized in that: A transfer pipe (305) is provided above the cooling unit (306) for connecting the cooling units (306) between two adjacent side shells (300).

9. The assembled frequency converter according to claim 8, characterized in that: A connecting plate (304) is provided above the side shells (300) for connecting adjacent side shells (300).

10. A method for assembling a frequency converter, used for assembling the assembled frequency converter according to claim 9, characterized in that: The specific assembly method is as follows: S1: Preparation stage, four limit frames (102) are installed behind the vertical plate body on the inner shell (100) to form an internal space exposed structure; S2: an assembly stage, in which the inverter components are directly assembled in the inner shell (100) through the exposed inner shell (100); S3: docking the slide rail at the bottom of the inner shell (100) with the support (204) in the outer shell (200), so that the inverter components are enclosed by the outer shell (200); S4: Slidingly installing the side shell (300) with the built-in cooling unit (306) into the interior of the outer shell (200), and positioning it by the bracket (203) and the baffle (205); S5: In the use stage, the protruding plate mechanism at the rear of the side shell (300) blocks the openings on both sides of the rear of the outer shell (200), and the widened and enlarged filter plate (202) is installed at the rear of the outer shell (200); S6: At this time, the heat dissipation fan (301) blows gas into the side shell (300), and after being cooled by the cooling unit (306) and guided by the arc-shaped guide plate (303), the gas is blown backward from the front surface of the inverter components, thereby increasing the heat dissipation area and speed, and the blowing force formed on the filter plate (202) can promote the discharge of dust and impurities.

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