Frequency converter explosion-proof housing with uniform heat dissipation

Abstract

The utility model discloses a frequency converter explosion-proof housing with uniform heat dissipation, which comprises a frequency converter housing, heat dissipation ports are arranged on two side walls of the frequency converter housing, air entraining mechanisms used for guiding air to flow are arranged on the two side walls of the frequency converter housing, and each air entraining mechanism comprises a heat dissipation housing arranged on the side wall of the frequency converter housing. A mesh plate is arranged in the heat dissipation shell, an axial flow fan is arranged on the side wall of the heat dissipation shell, and a dustproof net cylinder is arranged on the side wall of the heat dissipation shell. According to the utility model, the air entraining mechanism is arranged, so that a large amount of entrained cold air flow can be dispersed into a plurality of small air flows, the opportunity of contact between air and each area in the frequency converter is increased, the effect of uniform heat dissipation is achieved, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof shells for frequency converters, in particular to an explosion-proof shell for a frequency converter with uniform heat dissipation. Background Art

[0002] With the development of the times, the applications in the mechanical field are increasing continuously, which makes the applications of frequency converters more and more extensive. A frequency converter is one of the indispensable important devices for modern motor speed control and energy saving, and is widely used in the industrial field.

[0003] Existing explosion-proof shells for frequency converters are generally of an integral structure, that is, a shell specifically for one frequency converter device. Some shells are provided with ventilation openings on the upper and lower walls for ventilation, and some shells are provided with axial fans to accelerate ventilation. However, when only one fan is provided at the bottom to accelerate heat dissipation, the air sent in may indeed not flow evenly through all areas. For example, if the distribution of heat-generating elements is uneven, the areas far from the air inlet may receive less air volume. Another example is that the internal structure of the frequency converter is complex, there are some narrow channels or obstacles, and the air may be difficult to reach these corners. In the long run, it may cause these components to fail prematurely, increasing the maintenance cost and downtime. Therefore, it is necessary to design an explosion-proof shell for a frequency converter with uniform heat dissipation to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art, and to propose an explosion-proof shell for a frequency converter with uniform heat dissipation.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] An explosion-proof shell for a frequency converter with uniform heat dissipation, including a frequency converter shell. Heat dissipation openings are provided on both side walls of the frequency converter shell, and air guiding mechanisms for guiding air flow are provided on both side walls of the frequency converter shell. The air guiding mechanism includes a heat dissipation shell arranged on the side wall of the frequency converter shell. A mesh plate is arranged in the heat dissipation shell. An axial flow fan is arranged on the side wall of the heat dissipation shell. A dust-proof net cylinder is arranged on the side wall of the heat dissipation shell. A protection mechanism for protecting the dust-proof net cylinder is arranged on the side wall of the heat dissipation shell.

[0007] Preferably, the protection mechanism includes two slide rails fixedly connected to the side wall of the heat dissipation shell. A protection plate is jointly arranged in the two slide rails. An electric push rod is fixedly connected to the side wall of the slide rail. The output end of the electric push rod is fixedly connected to the side wall of the protection plate through a connecting plate.

[0008] Preferably, an installation cylinder is fixedly connected to the side wall of the heat dissipation shell, and the installation cylinder is threadedly connected to the dust-proof net cylinder.

[0009] Preferably, a heat conducting plate is provided on the side wall of the frequency converter housing, a heat conducting frame is sleeved on the side wall of the heat conducting plate, and a plurality of heat conducting rods are provided on the side wall of the heat conducting frame.

[0010] Preferably, a plurality of bolts are provided on both side walls of the heat conducting frame, and the plurality of heat conducting rods are arranged at equal intervals.

[0011] Preferably, a plurality of mounting rods are fixedly connected to the upper end of the frequency converter housing, and a rain shield is fixedly connected to the upper ends of the plurality of mounting rods together.

[0012] In the present utility model, the following beneficial effects are achieved:

[0013] 1. An air guiding mechanism is provided in the device, which can disperse a large amount of introduced cold air flow into multiple small air flows, increasing the chance of contact between the air and various areas inside the frequency converter, achieving the effect of uniform heat dissipation. Moreover, the rising hot air can flow out from a plurality of air outlet holes, avoiding concentrated discharge and causing a relatively high temperature near the concentrated area, thereby improving the practicability of the device;

[0014] 2. A protection mechanism is provided in the device. When an abnormal situation occurs in the frequency converter, the two protection plates can move above or below the dust-proof net cylinder, which can prevent the outside from being affected by the axial flow fan when a dangerous situation occurs in the frequency converter, thereby improving the explosion-proof effect of the frequency converter;

[0015] 3. A heat conducting rod and a heat conducting plate are provided in the device. Modules with serious heat generation in the frequency converter can be installed on the heat conducting plate, which can quickly conduct the heat generated by the modules with serious heat generation to the outside, increasing the heat dissipation area. A large number of heat conducting rods outside significantly increase the surface area in contact with the air, improving the heat dissipation efficiency. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of an explosion-proof housing of a frequency converter with uniform heat dissipation proposed by the present utility model;

[0017] Figure 2 is Figure 1 an enlarged view of the structure at A of

[0018] Figure 3 is a side view of an explosion-proof housing of a frequency converter with uniform heat dissipation proposed by the present utility model;

[0019] Figure 4 is another side view of an explosion-proof housing of a frequency converter with uniform heat dissipation proposed by the present utility model.

[0020] In the figure: 1 frequency converter housing, 2 heat dissipation housing, 3 heat dissipation opening, 4 axial flow fan, 5 mesh plate, 6 rain shield, 7 heat conducting plate, 8 heat conducting frame, 9 heat conducting rod, 10 mounting cylinder, 11 dust-proof net cylinder, 12 slide rail, 13 electric push rod, 14 protection plate. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0022] Referring to Figures 1-4 , a frequency converter explosion-proof housing with uniform heat dissipation includes a frequency converter housing 1. Heat dissipation openings 3 are provided on both side walls of the frequency converter housing 1. Air guiding mechanisms for guiding air flow are provided on both side walls of the frequency converter housing 1. The air guiding mechanism includes a heat dissipation housing 2 provided on the side wall of the frequency converter housing 1. A mesh plate 5 is provided inside the heat dissipation housing 2. Axial flow fans 4 are provided on the side wall of the heat dissipation housing 2. The air guiding directions of the two axial flow fans 4 are different. The lower axial flow fan 4 is used to introduce gas into the frequency converter, and the upper axial flow fan 4 is used to extract the air inside the frequency converter. A dust-proof net cylinder 11 is provided on the side wall of the heat dissipation housing 2.

[0023] A protection mechanism for protecting the dust-proof net cylinder 11 is provided on the side wall of the heat dissipation housing 2. The protection mechanism includes two slide rails 12 fixedly connected to the side wall of the heat dissipation housing 2. A protection plate 14 is jointly provided inside the two slide rails 12. An electric push rod 13 is fixedly connected to the side wall of the slide rail 12. The output end of the electric push rod 13 is fixedly connected to the side wall of the protection plate 14 through a connecting plate.

[0024] In the present utility model, an installation cylinder 10 is fixedly connected to the side wall of the heat dissipation housing 2. The installation cylinder 10 is threadedly connected to the dust-proof net cylinder 11. The dust-proof net cylinder 11 is made of an explosion-proof metal material with the same material as the frequency converter housing 1, so that the dust-proof net cylinder 11 can be disassembled, which is convenient for replacing or cleaning the dust-proof net cylinder 11.

[0025] In the present utility model, a heat conduction plate 7 is provided on the side wall of the frequency converter housing 1. A heat conduction frame 8 is sleeved on the side wall of the heat conduction plate 7. A plurality of heat conduction rods 9 are provided on the side wall of the heat conduction frame 8. Modules with serious heat generation can be installed on the heat conduction plate 7. The heat conduction plate 7 is usually made of a material with a high heat conduction coefficient, such as copper or aluminum, and can quickly conduct the heat generated by the modules with serious heat generation to the outside, increasing the heat dissipation area. A large number of external heat conduction rods 9 significantly increase the surface area in contact with the air, improving the heat dissipation efficiency.

[0026] In the present utility model, a plurality of bolts are provided on both side walls of the heat conduction frame 8. The plurality of heat conduction rods 9 are arranged at equal intervals, so that the heat conduction rods 9 can be disassembled from the frequency converter housing 1, which is convenient for transportation.

[0027] In the present utility model, a plurality of mounting rods are fixedly connected to the upper end of the frequency converter housing 1. A rain shield 6 is jointly fixedly connected to the upper ends of the plurality of mounting rods. By installing the rain shield 6, the frequency converter can be prevented from being damaged by rain when outdoors.

[0028] In the initial state, the electric push rod 13 is connected to the frequency converter controller.

[0029] During use, by starting the two axial flow fans 4, the lower axial flow fan 4 introduces the cold air at the bottom into the frequency converter housing 1. The introduced cold air is blocked by the mesh plate 5 and can only flow through the multiple meshes, which can disperse the initial concentrated air flow into multiple small air flows, increasing the chance of the air contacting various areas inside the frequency converter, thereby achieving the effect of uniform heat dissipation. Moreover, the rising hot air can flow out from the multiple air outlet holes, avoiding concentrated discharge and causing a relatively high temperature near the concentrated area.

[0030] Secondly, when an abnormal situation occurs in the frequency converter, the controller inside the frequency converter starts the multiple electric push rods 13. The two protective plates 14 move above or below the dust-proof net cylinder 11 under the limitation of the slide rails 12, which can prevent the frequency converter from affecting the outside from the axial flow fan 4 when a dangerous situation occurs.

[0031] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and practical concept of the present utility model, makes equivalent replacements or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. An inverter explosion-proof housing with uniform heat dissipation, comprising an inverter housing (1), characterized in that: Both side walls of the inverter housing (1) are provided with heat dissipation openings (3), and both side walls of the inverter housing (1) are provided with air induction mechanisms for guiding air flow, and the air induction mechanisms include a heat dissipation housing (2) arranged on the side walls of the inverter housing (1), a mesh plate (5) is arranged inside the heat dissipation housing (2), an axial flow fan (4) is arranged on the side walls of the heat dissipation housing (2), a dustproof mesh cylinder (11) is arranged on the side walls of the heat dissipation housing (2), and a protective mechanism for protecting the dustproof mesh cylinder (11) is arranged on the side walls of the heat dissipation housing (2).

2. The inverter explosion-proof housing with uniform heat dissipation according to claim 1, characterized in that: The protection mechanism comprises two slide rails (12) fixedly connected to the side walls of the heat dissipation housing (2), a protection plate (14) being provided in the two slide rails (12), an electric push rod (13) being fixedly connected to the side walls of the slide rails (12), and an output end of the electric push rod (13) being fixedly connected to the side wall of the protection plate (14) via a connecting plate.

3. The inverter explosion-proof housing with uniform heat dissipation according to claim 2, characterized in that: A mounting cylinder (10) is fixedly connected to the side wall of the heat dissipation housing (2), and the mounting cylinder (10) is threadedly connected to the dustproof net cylinder (11).

4. The inverter explosion-proof housing with uniform heat dissipation according to claim 3, characterized in that: The inverter housing (1) is provided with a heat conducting plate (7) on its side wall, a heat conducting frame (8) is sleeved on the side wall of the heat conducting plate (7), and a plurality of heat conducting rods (9) are provided on the side wall of the heat conducting frame (8).

5. The inverter explosion-proof housing with uniform heat dissipation according to claim 4, characterized in that: Both side walls of the heat-conducting frame (8) are provided with a plurality of bolts, and a plurality of the heat-conducting rods (9) are arranged at equal intervals.

6. The inverter explosion-proof housing with uniform heat dissipation according to claim 5, characterized in that: A plurality of mounting rods are fixedly connected to the upper end of the frequency converter housing (1), and a rain cover (6) is fixedly connected to the upper ends of the plurality of mounting rods.

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