Heat dissipation structure of electric control cabinet

Abstract

The utility model discloses a heat dissipation structure of an electric control cabinet, which comprises a cabinet body, a plurality of ventilation openings arranged on the left side wall and the right side wall of the cabinet body, a main exhaust fan arranged at the upper end of the cabinet body, an exhaust pipe arranged on the rear side wall of the cabinet body, an air outlet end of the exhaust pipe communicated with an air inlet end of the main exhaust fan, and a plurality of connecting openings arranged on two sides of the exhaust pipe. The connector is provided with an extension pipe extending to a component installation area in the cabinet body, and the extension pipe is provided with a plurality of air inlets. The beneficial effects of the utility model are that under the action of the main exhaust fan, the exhaust pipe and the extension pipe are utilized to form negative pressure in the component installation area, so that cold air entering the cabinet body from the ventilation opening passes through the component installation area, is heated, enters the pipeline from the air inlet and is finally exhausted by the main exhaust fan, and the heat dissipation effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of electrical control cabinet technology, and in particular to a heat dissipation structure for electrical control cabinets. Background Technology

[0002] An electrical control cabinet is a control cabinet in which switching equipment, measuring instruments, protective electrical appliances, and auxiliary equipment are assembled in a closed or semi-closed metal cabinet or panel according to electrical wiring requirements. Its layout should meet the requirements of normal operation of the power system, facilitate maintenance, and not endanger the safety of personnel and surrounding equipment. It generally includes distribution cabinets, distribution boxes, and electrical control cabinets. With the widespread application of electrical components, the number of components inside the control cabinet has increased, making heat dissipation within the cabinet an increasingly important issue. Existing heat dissipation structures usually utilize circulating fans for heat exchange with the outside environment; however, this is often only effective near the circulating fan, leaving the central area of ​​the cabinet, where electrical components are concentrated, with high temperatures and poor heat dissipation. Utility Model Content

[0003] The purpose of this utility model is to provide a heat dissipation structure for electrical control cabinets, thereby solving the problem of poor heat dissipation effect of existing heat dissipation structures.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A heat dissipation structure for an electrical control cabinet includes a cabinet body. The left and right side walls of the cabinet body are provided with a plurality of ventilation openings. A main exhaust fan is provided at the top of the cabinet body. An exhaust pipe is provided on the rear side wall of the cabinet body. The air outlet of the exhaust pipe is connected to the air inlet of the main exhaust fan. A plurality of connection ports are provided on both sides of the exhaust pipe. An extension pipe extending into the component mounting area inside the cabinet body is installed on the connection port. A plurality of air inlets are provided on the extension pipe.

[0006] Furthermore, the extension tube is provided with heat-conducting plates, which are alternately arranged with the air inlet.

[0007] Furthermore, both the extension pipe and the exhaust pipe are rectangular pipes, and the end of the extension pipe away from the exhaust pipe is provided with a connecting piece, which is threaded to the rear side wall of the cabinet.

[0008] Furthermore, secondary exhaust fans are provided on both sides of the main exhaust fan at the upper end of the cabinet.

[0009] Furthermore, the upper part of the cabinet is provided with an annular protective plate surrounding the main exhaust fan and the secondary exhaust fan.

[0010] Furthermore, a rain shield is installed on the upper part of the cabinet via a column, and the column is located outside the annular protective plate.

[0011] This utility model has the following advantages:

[0012] Under the action of the main exhaust fan, negative pressure is formed in the component mounting area by setting the exhaust pipe and the extension pipe, so that the cold air entering the cabinet through the air vent passes through the component mounting area, is heated, enters the pipeline through the air inlet, and is finally discharged by the main exhaust fan, thereby improving the heat dissipation effect. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The figure is a structural schematic diagram of the utility model.

[0014] In the figure, 1 is a cabinet, 2 is an air vent, 3 is a main exhaust fan, 4 is an exhaust pipe, 5 is a connecting port, 6 is an extension pipe, 7 is an air inlet, 8 is a secondary exhaust fan, 9 is a heat conduction sheet, 10 is a connecting sheet, 11 is an annular protection plate, 12 is a stand column, and 13 is a rain baffle. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.

[0017] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0018] It should be noted that: similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0019] In the description of the utility model, it is necessary to explain that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relation shown based on the drawings, or is the orientation or position relation commonly placed when the utility model product is used, or is the orientation or position relation commonly understood by the person skilled in the art, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0020] In the description of the utility model, it is also necessary to explain that, unless otherwise explicitly specified and limited, the terms "setting", "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For the person skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0021] Reference Figure 1 An embodiment of the utility model is shown in the drawings:

[0022] A kind of electric control cabinet heat dissipation structure, including cabinet 1, the left and right side walls of the cabinet 1 are equipped with several ventilation openings 2, the upper end of the cabinet 1 is equipped with main exhaust fan 3, the rear wall of the cabinet 1 is equipped with exhaust pipe 4, the air outlet end of the exhaust pipe 4 is communicated with the air inlet end of the main exhaust fan 3, several connecting openings 5 are opened in the two sides of the exhaust pipe 4, the connecting opening 5 is installed with the extension pipe 6 extending to the component mounting area in the cabinet 1, several air inlets 7 are opened in the extension pipe 6.

[0023] The upper end of the cabinet 1 is equipped with secondary exhaust fan 8 on the two sides of the main exhaust fan 3.

[0024] Under the action of main exhaust fan 3, negative pressure is formed in component mounting area by setting exhaust pipe 4 and extension pipe 6, so that the cold air entering the cabinet 1 through ventilation opening 2 passes through component mounting area, is heated, enters the pipeline through air inlet 7, and is finally discharged by main exhaust fan 3, thereby improving the heat dissipation effect. Secondary exhaust fan 8 discharges the hot air stream rising naturally, so that the temperature in the cabinet 1 is maintained within a normal range.

[0025] Specifically, in the implementation, the extension pipe 6 can be installed at the appropriate position of the connecting port 5 according to the installation position of the component, so as to reduce the influence on the wiring or installation of the component. The idle connecting port 5 can be installed with a plug for plugging or kept open. The specific selection is determined according to the cabinet space and the heat dissipation requirement.

[0026] Further, in order to ensure the heat exchange effect, the extension pipe 6 is provided with a heat conduction sheet 9, and the heat conduction sheet 9 is alternately arranged with the air inlet 7. By alternately arranging the heat conduction sheet 9 with the air inlet 7, the heat exchange effect is ensured, and the heat dissipation effect is improved.

[0027] Further, in order to ensure the convenience of installation, the extension pipe 6 and the exhaust pipe 4 are both rectangular pipes, and the extension pipe 6 is provided with a connecting sheet 10 at the end away from the exhaust pipe 4, and the connecting sheet 10 is threadedly connected with the rear side wall of the cabinet 1.

[0028] The rectangular pipe structure is adopted, so that the installation and fixation are facilitated, and the installation stability of the extension pipe 6 is improved by the connecting sheet 10 arranged at the distal end of the extension pipe 6.

[0029] The upper end of the cabinet 1 is provided with an annular protection plate 11 surrounding the main exhaust fan 3 and the secondary exhaust fan 8.

[0030] The upper end of the cabinet 1 is provided with an annular protection plate 11 surrounding the main exhaust fan 3 and the secondary exhaust fan 8.

[0031] The rainproof plate 13 and the annular protection plate 11 can effectively prevent rainwater from entering, and ensure the stable operation of the electric control cabinet for a long time.

[0032] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An electric control cabinet heat dissipation structure, characterized in that: The utility model provides a cabinet, which comprises a cabinet body, a plurality of ventilation openings arranged on the left and right side walls of the cabinet body, a main exhaust fan arranged at the upper end of the cabinet body, an exhaust pipe arranged on the rear side wall of the cabinet body, an air outlet end of the exhaust pipe being communicated with an air inlet end of the main exhaust fan, a plurality of connecting openings being arranged on the two sides of the exhaust pipe, an extension pipe being arranged on the connecting openings and extending into a component mounting area of the cabinet body, and a plurality of air inlets being arranged on the extension pipe.

2. The heat dissipation structure of an electric control cabinet according to claim 1, characterized in that: A heat-conducting sheet is arranged on the extension pipe and alternately arranged with the air inlets.

3. The heat dissipation structure of an electric control cabinet according to claim 1, characterized in that: The extension pipe and the exhaust pipe are rectangular pipes, one end of the extension pipe away from the exhaust pipe is provided with a connecting sheet, and the connecting sheet is threadedly connected with the rear side wall of the cabinet body.

4. The electric control cabinet heat dissipation structure according to claim 1, characterized in that: Secondary exhaust fans are arranged on the two sides of the main exhaust fan at the upper end of the cabinet body.

5. The electric control cabinet heat dissipation structure according to claim 4, characterized in that: An annular protective plate is arranged at the upper end of the cabinet body and surrounds the main exhaust fan and the secondary exhaust fans.

6. The electric control cabinet heat dissipation structure according to claim 5, characterized in that: A rain shield is arranged at the upper end of the cabinet body through a stand column, and the stand column is located outside the annular protective plate.

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