Frequency converter

Abstract

The utility model discloses a frequency converter which comprises a box body, the middle part of the box body is provided with a heat conduction installation plate used for installing electrical elements, the heat conduction installation plate divides the box body into a heat dissipation area and an electrical function area in the front and back direction, and one side, facing the heat dissipation area, of the heat conduction installation plate is provided with heat dissipation fins which are arranged at equal intervals. A heat dissipation air channel penetrating in the vertical direction is formed between every two adjacent heat dissipation fins. An upper ventilation opening and a lower ventilation opening are formed in the upper end and the lower end of the heat dissipation area respectively, and a heat dissipation fan is arranged at the upper ventilation opening or the lower ventilation opening. The utility model has the advantages of reasonable structural design, high-efficiency heat dissipation and the like, and is beneficial to stable and reliable operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to frequency conversion technical field, especially a frequency converter. BACKGROUND

[0002] The frequency converter is one of important devices indispensable for modern motor speed control and energy saving, and is widely applied in the industrial field. The main circuit of the frequency converter is composed of three parts of rectifier circuit, intermediate circuit and inverter circuit, and the power devices in these circuits generate large heat in the working process. If the heat cannot be effectively dissipated, the frequency converter will be shut down or damaged due to high temperature, and cannot be normally operated. How to continuously optimize the heat dissipation of the frequency converter is one of the concerns in the design of the frequency converter. SUMMARY

[0003] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the utility model is to provide a frequency converter with reasonable structure design, efficient heat dissipation and stable and reliable operation.

[0004] In order to solve the above-mentioned technical problem, the utility model adopts the following technical scheme:

[0005] A frequency converter comprises a box body, a heat-conducting mounting plate for mounting electrical elements is arranged in the middle of the box body, the heat-conducting mounting plate divides the box body into a heat dissipation area and an electrical function area from front to back, the side of the heat-conducting mounting plate facing the heat dissipation area is provided with equidistantly arranged heat dissipation fins, and a heat dissipation air duct penetrating in the vertical direction is formed between adjacent two heat dissipation fins; the upper and lower ends of the heat dissipation area are respectively provided with an upper air vent and a lower air vent, and a heat dissipation fan is arranged at the upper air vent or the lower air vent.

[0006] Further, the side of the heat-conducting mounting plate facing the electrical function area is provided with a rectifier circuit module and an inverter circuit module.

[0007] Further, the upper air vent is provided with a support plate, the support plate is provided with at least two mounting holes arranged at intervals in the length direction, and the heat dissipation fan is an axial flow fan mounted on the mounting hole.

[0008] Further, the edge of the support plate is downwardly folded to form a reinforcing rib.

[0009] Further, the box body comprises a back plate, the two sides of the back plate are provided with vertically arranged side plates, and any side plate is hingedly provided with an openable box door; the heat-conducting mounting plate is vertically arranged between the two side plates, and the support plate is arranged in the region between the heat-conducting mounting plate and the back plate.

[0010] Further, the bottom of the back plate and the two side plates is provided with a bottom plate, and the lower air vent is arranged on the bottom plate and between the heat-conducting mounting plate and the back plate.

[0011] Further, the lower air vent is arranged in a strip shape along the width direction of the back plate, and the lower air vent is provided with a rib arranged along the width direction of the side plate, and the rib is uniformly arranged with a plurality of ribs along the length direction of the lower air vent.

[0012] Further, the bottom plate is provided with a clearance hole corresponding to the electrical functional area.

[0013] Further, the back plate and the two side plates are integrally bent and formed.

[0014] Further, the heat dissipation fins are integrally formed on the heat-conducting mounting plate.

[0015] In summary, the utility model has the advantages of reasonable structure design, efficient heat dissipation, and stable and reliable operation. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figures 2-4 It is Figure 1 a schematic diagram of the internal structure. DETAILED DESCRIPTION

[0018] The utility model will be further described in detail below in combination with examples.

[0019] In specific implementation: as Figures 1-4 shown, a frequency converter includes a box body 1, the middle part of the box body 1 is provided with a heat-conducting mounting plate 2 for installing electrical elements, the heat-conducting mounting plate 2 divides the box body 1 into a heat dissipation area and an electrical functional area from front to back, the side of the heat-conducting mounting plate 2 towards the heat dissipation area is provided with equidistantly arranged heat dissipation fins, and adjacent two heat dissipation fins form a heat dissipation air duct penetrating in the vertical direction; the upper and lower ends of the heat dissipation area are respectively provided with an upper air vent and a lower air vent, and a heat dissipation fan 3 is arranged at the upper air vent or the lower air vent.

[0020] In implementation, the side of the heat-conducting mounting plate 2 towards the electrical functional area is provided with a rectifier circuit module and an inverter circuit module.

[0021] In implementation, the upper air vent is provided with a support plate 4, the support plate 4 is provided with at least two mounting holes arranged at intervals along the length direction, and the heat dissipation fan 3 is an axial flow fan mounted on the mounting hole.

[0022] In implementation, the edges of the support plate 4 are folded downward to form reinforcing ribs.

[0023] In implementation, the cabinet 1 comprises a back plate 11, two vertically arranged side plates 12 are arranged on two sides of the back plate 11, and any one of the side plates 12 is hingedly connected with an openable cabinet door 13; the heat-conducting mounting plate 2 is vertically arranged between the two side plates 12, and the support plate 4 is arranged on the area between the heat-conducting mounting plate 2 and the back plate 11.

[0024] In implementation, the bottom of the back plate 11 and the two side plates 12 is provided with a bottom plate 14 arranged thereon, and the lower air vent is arranged on the bottom plate 14 and located between the heat-conducting mounting plate 2 and the back plate 11.

[0025] In implementation, the lower air vent is arranged in a strip shape along the width direction of the back plate 11, and the lower air vent is provided with a rib arranged along the width direction of the side plate, and a plurality of ribs are uniformly arranged along the length direction of the lower air vent.

[0026] In implementation, the bottom plate 14 is provided with a clearance hole corresponding to the electrical functional area.

[0027] In implementation, the back plate 11 and the two side plates 12 are integrally bent and formed.

[0028] In implementation, the heat-dissipating fins are integrally formed on the heat-conducting mounting plate 2.

[0029] The above only describes the preferred embodiments of the present application, and the present application is not limited thereto. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A frequency converter, characterized in that The utility model provides a box (1) is provided with heat conducting mounting plate (2) in the middle part of box (1), and heat conducting mounting plate (2) divides the box (1) into heat dissipation area and electrical function area, and the side of heat conducting mounting plate (2) is provided with the fin of equidistance arrangement towards heat dissipation area, and the adjacent two fins form the heat dissipation air duct along the vertical through between two fins, and the upper vent and the lower vent are provided with heat dissipation fan (3) in the upper end and the lower end of heat dissipation area respectively.

2. The frequency converter of claim 1, wherein, The side of heat conducting mounting plate (2) is provided with rectifier circuit module and inverter circuit module towards electrical function area.

3. The frequency converter of claim 1, wherein, The upper vent is provided with support plate (4), and support plate (4) is provided with at least two mounting holes along the length direction, and heat dissipation fan (3) is axial flow fan installed on mounting hole.

4. The frequency converter of claim 3, wherein, The edge of support plate (4) is folded down and forms reinforcing rib.

5. The frequency converter of claim 4, wherein, The box (1) includes back plate (11), and the both sides of back plate (11) are provided with vertical side plate (12), and any side plate (12) is hinged with openable box door (13), and heat conducting mounting plate (2) is vertically arranged between two side plates (12), and support plate (4) is arranged between heat conducting mounting plate (2) and back plate (11).

6. The frequency converter of claim 5, wherein, The bottom of back plate (11) and two side plates (12) is provided with cover plate (14), and lower vent is arranged on cover plate (14) and between heat conducting mounting plate (2) and back plate (11).

7. The frequency converter of claim 6, wherein, The lower vent is long strip along the width direction of back plate (11), and the rib along the width direction of side plate is arranged on lower vent, and the rib is uniformly arranged along the length direction of lower vent.

8. The frequency converter of claim 7, wherein, Covering hole corresponding to electrical function area is arranged on cover plate (14).

9. The frequency converter of claim 5, wherein, Back plate (11) and two side plates (12) are integrally bent and formed.

10. The frequency converter of claim 1, wherein, The fin is integrally formed on heat conducting mounting plate (2).

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