CN218006731U - Heat dissipation shell of frequency converter - Google Patents

Abstract

The application provides a frequency converter radiating shell which comprises an upper shell used for placing a power device and a PCB, wherein the upper shell is of a rectangular shell structure with closed side periphery and front and back communication, an upper shell radiating fin is arranged at the bottom of the upper shell, and the upper shell radiating fin are integrally extruded and formed by aluminum alloy sections; and the front cover plate and the rear cover plate are respectively covered at the front end part and the rear end part of the upper shell. This application collects box and radiator as an organic whole, and the last casing of installation electrical component is from taking heat radiation structure, goes up casing and last casing radiating fin through the integrative extrusion of aluminum alloy ex-trusions. Compared with the traditional sheet metal shell, the section shell has the advantages that the number of parts is reduced, the processing cost and the assembly cost are reduced, and the heat dissipation performance of the box body is improved due to the integrated structure of the box body and the radiator; in addition, compared with the traditional die-casting shell, the die-casting shell has the same performance as the die-casting shell, saves the die sinking cost of the sectional material and reduces the production cost.

Description

Heat dissipation shell of frequency converter

Technical Field

The application relates to the technical field of heat dissipation of frequency converters, and more particularly relates to a heat dissipation shell of a frequency converter.

Background

At present, most of frequency converters in the rail transit industry adopt a sheet metal box body or a die-casting box body. The sheet metal box body is connected with the radiator through connecting pieces such as bolts and the like to radiate the box body, and the sheet metal box body and the radiator are in a split connection structure, so that the sheet metal box body is large in part quantity, high in processing cost and assembly cost, large in thermal resistance after glue is applied and poor in radiating effect, and gaps exist among all the parts. The die-casting box body is processed by a die-casting die, and the die-opening cost is high in the early stage of processing, so that the box body cost is overhigh.

SUMMERY OF THE UTILITY MODEL

The application provides a converter heat dissipation casing, simple structure, processing is convenient, and assembly part is small in quantity, and the equipment of being convenient for, the cost is not high to have apparent radiating effect.

The application provides a frequency converter radiating shell which comprises an upper shell used for placing a power device and a PCB, wherein the upper shell is of a rectangular shell structure with a closed side periphery and communicated front and back, an upper shell radiating fin is arranged at the bottom of the upper shell, and the upper shell radiating fin are integrally extruded and formed by aluminum alloy sections; the front cover plate and the rear cover plate are respectively covered at the front end part and the rear end part of the upper shell.

In some embodiments, the electronic device further comprises a lower shell which is arranged at the bottom of the upper shell and used for placing an inductor and a capacitor, end cover plates are mounted at the front end and the rear end of the lower shell in a covering manner, and lower shell heat dissipation fins are arranged at the left side, the right side and the bottom of the lower shell.

In some embodiments, the lower shell is a U-shaped shell structure which forms a closed side periphery, is communicated with the front and the back of the bottom plate of the upper shell and has a U-shaped cross section.

In some embodiments, the upper housing heat sink fins, the lower housing, and the lower housing heat sink fins are extruded as a single piece.

In some embodiments, the lower casing heat dissipation fins arranged at the bottom of the lower casing are a plurality of L-shaped heat dissipation fins.

In some embodiments, the sum of the heights of the lower shell and the lower shell heat dissipation fins arranged at the bottom of the lower shell is equal to the height of the upper shell heat dissipation fins.

In some embodiments, the bottom of the upper shell is provided with a square groove or a line hole for communicating with the lower shell.

The application provides a converter heat dissipation casing has following technical advantage:

1. the upper shell and the upper shell radiating fins are integrally extruded and formed by aluminum alloy profiles, the structure is simple, the number of parts is small, the assembly is convenient, the upper shell is provided with a radiating structure, the laminating degree is high, and the radiating effect is good;

2. the layout is reasonable, the structure is compact, and the installation space is saved;

3. the extrusion die has low cost.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a heat dissipation housing of a frequency converter according to an embodiment of the present application;

fig. 2 is a front view of fig. 1.

Wherein, 1-upper shell, 2-upper shell radiating fins, 3-front cover plate, 4-PCB, 5-lower shell, 6-end cover plate and 7-lower shell radiating fins.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In order to better understand the technical scheme of the present application, the following detailed description is provided for the person skilled in the art with reference to the accompanying drawings and the detailed description.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a heat dissipation housing of a frequency converter according to an embodiment of the present disclosure; fig. 2 is a front view of fig. 1.

The application provides a converter heat dissipation casing, mainly is applied to the converter of track traffic trade, includes casing 1, last casing radiating fin 2, front shroud 3 and back shroud (not shown in the figure).

The upper shell 1 is a rectangular shell structure with a closed side periphery and front and back communication, the upper shell 1 is used for placing components such as a power device and a PCB (printed circuit board) 4, and the power device and the PCB 4 are placed on a bottom plate of the upper shell 1. Go up casing radiating fin 2 and set up in the outside bottom of last casing 1 for dispel the heat to last casing 1, give off the produced heat of power device and PCB board 4 during operation. The front end cover of the upper shell 1 is provided with a front cover plate 3, the rear end cover of the upper shell 1 is provided with a rear cover plate, the front cover plate 3 and the rear cover plate can be arranged at the end part of the upper shell 1 in clamping connection, bolt connection and other modes, the internal and external environments of the upper shell 1 are isolated, and the requirement of protection grade is met. The upper shell 1 and the upper shell radiating fins 2 are integrally extruded and formed by aluminum alloy section bars.

This application integrates box and radiator structure that components of a whole that can function independently is connected on the market, through integrative extrusion for the last casing 1 of installation electrical component is from taking the radiating fin structure, realizes the whole heat dissipation of box, increases the holistic heat dispersion of box. The heat dissipation shell of the frequency converter is only composed of the upper shell 1 integrated with the heat dissipation fins, the front cover plate, the rear cover plate and a small number of connecting pieces, the number of parts such as sealing pieces and connecting pieces is remarkably reduced, and the heat dissipation shell is convenient to assemble and disassemble. Compared with die-casting molding, the extrusion molding process is low in processing cost, has sealing and heat dissipation functions, achieves integral heat dissipation of the box body and is good in heat dissipation performance.

Because present converter box, parts such as inductance, electric capacity are placed inside the box mostly, have not only increased the overall dimension of box, and parts such as inductance, electric capacity can't effectively dispel the heat moreover, place then can't satisfy the protection requirement in the box outside.

In order to solve the problems, the bottom of the upper shell 1 is provided with the lower shell 5, the inductor and the capacitor are placed in the lower shell 5, the left side and the right side of the lower shell 5 and the bottom of the lower shell are provided with the lower shell radiating fins 7, the front end and the rear end of the lower shell 5 are covered with the end cover plates 6, and the two end cover plates 6 are clamped or connected onto the lower shell 5 through bolts.

In the present embodiment, by providing the lower case 5 at the bottom of the upper case 1, components such as inductors and capacitors are integrally mounted in the lower case 5, the outer dimension of the upper case 1 can be effectively reduced, and the heat dissipation performance can be improved.

The lower shell 5 is a U-shaped shell structure which is closed at the side periphery formed by the bottom surface of the upper shell 1, is communicated with the front and the back and has a U-shaped section, and circular devices such as inductors, capacitors and the like are intensively placed in the lower shell 5. Go up casing 1, go up casing radiating fin 2, lower casing 5 and the integrative extrusion of lower casing radiating fin 7, further reduce part quantity, reduce the processing cost, improve machining efficiency.

In a specific embodiment, the lower casing heat dissipation fins 7 disposed on the side portion of the lower casing 5 are a plurality of square heat dissipation fins distributed transversely, and the square heat dissipation fins are shorter in size and are uniformly distributed on the outer wall of the arc surface of the lower casing 5, so that heat can be uniformly dissipated from the outer wall of the arc surface of the lower casing 5. The lower shell radiating fins 7 arranged at the bottom of the lower shell 5 are a plurality of L-shaped radiating fins, one ends of the L-shaped radiating fins are arranged at the bottom of the lower shell 5, the other ends of the L-shaped radiating fins are supported on the placing platform, and the L-shaped radiating fins are symmetrically distributed relative to the central line of the lower shell 5, so that uniform heat dissipation of the bottom area of the lower shell 5 is realized. It should be noted that, the arrangement, structure and number of the lower casing heat dissipation fins 7 can be designed according to actual production requirements, and the present disclosure is not limited thereto.

The upper shell radiating fins 2 are a plurality of square fins which are vertically distributed, the radiating fins are arranged at equal intervals, and the sum of the heights of the lower shell 5 and the lower shell radiating fins 7 arranged at the bottom of the lower shell 5 is equal to the height of the upper shell radiating fins 2. The structure can meet the heat dissipation requirement and provide a supporting function, so that the appearance of the equipment is coordinated and attractive.

Of course, the structure, size and number of the upper case heat dissipation fins 2 may be various.

The bottom of going up casing 1 is equipped with square groove or line hole, and square groove or line hole communicate in casing 5 and last casing 1 down, and its quantity all can be one or many places, and square groove or line hole are used for concentrating the connecting wire and accomodate in last casing 1 and casing 5 down inside to make things convenient for inside to walk the line.

It should be noted that, the positions and the number of the upper casing heat dissipation fins 2 and the lower casing 5 in the present application are not limited, and not only the left-right distributed structure in fig. 1 and fig. 2 may be adopted, but also the upper casing heat dissipation fins 2 may be completely arranged at the bottom of the upper casing 1, or one or more lower casings 5 with heat dissipation fins may be completely arranged, and may be determined according to the production requirements.

It should be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

The converter heat dissipation shell provided by the application is described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.

Claims (7)

1. The frequency converter heat dissipation shell is characterized by comprising an upper shell (1) used for placing a power device and a PCB (printed circuit board) (4), wherein the upper shell (1) is of a rectangular shell structure with closed side periphery and communicated front and back, an upper shell heat dissipation fin (2) is arranged at the bottom of the upper shell (1), and the upper shell (1) and the upper shell heat dissipation fin (2) are integrally extruded and formed by aluminum alloy profiles; the front cover plate (3) and the rear cover plate are respectively covered and arranged at the front end part and the rear end part of the upper shell (1).

2. The frequency converter heat dissipation shell according to claim 1, further comprising a lower shell (5) disposed at the bottom of the upper shell (1) and used for placing inductors and capacitors, wherein end covers (6) are mounted at the front and rear ends of the lower shell (5), and lower shell heat dissipation fins (7) are disposed at the left and right sides and the bottom of the lower shell (5).

3. The frequency converter heat dissipation casing according to claim 2, characterized in that the lower casing (5) is a U-shaped casing structure forming a closed side periphery, communicating front and back, and having a U-shaped cross section with the bottom plate of the upper casing (1).

4. The frequency converter heat dissipation housing according to claim 3, characterized in that the upper housing (1), the upper housing fins (2), the lower housing (5) and the lower housing fins (7) are integrally formed by extrusion.

5. The heat dissipation casing of frequency converter according to claim 4, characterized in that the heat dissipation fins (7) of the lower casing (5) are L-shaped fins.

6. The frequency converter heat dissipation housing according to claim 2, wherein the sum of the heights of the lower housing (5) and the lower housing heat dissipation fins (7) provided at the bottom of the lower housing (5) is equal to the height of the upper housing heat dissipation fins (2).

7. The frequency converter heat dissipation shell according to claim 3, wherein the bottom of the upper shell (1) is provided with a square groove or a wire hole for communicating with the lower shell (5).

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