PLC control device with heat dissipation structure for electrical automation

Abstract

The utility model belongs to the technical field of electrical automation equipment, and relates to a PLC (Programmable Logic Controller) control device with a heat dissipation structure for electrical automation, which comprises a PLC control cabinet body, a connecting plate and a plurality of heat dissipation pipes fixed on one side wall of the connecting plate, an air inlet and an air outlet are formed in the PLC control cabinet body, and a cooling fan is mounted at the air inlet; a plurality of through holes are formed in the connecting plate, the connecting plate is fixed to the outer side wall of the air outlet of the PLC control cabinet body and covers the air outlet, and the heat dissipation pipes penetrate into the air outlet and extend into the PLC control cabinet body. A heat dissipation structure composed of an air inlet, an air outlet, a heat dissipation fan, a plurality of heat dissipation pipes and a connecting plate is installed on a PLC control cabinet body of the device, when the heat dissipation fan operates, air inside and outside the PLC control cabinet body can be promoted to flow circularly, air circulation can be accelerated, heat inside the PLC control cabinet body can be taken away, and due to the fact that air flow in the heat dissipation pipes is accelerated, heat dissipation efficiency is improved. Therefore, the heat on the radiating pipe can be taken away in an accelerated manner.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical automation equipment and relates to a PLC control device with a heat dissipation structure for electrical automation. Background Art

[0002] The PLC control cabinet is a common electrical automation control device and a crucial component of industrial automation control systems. By integrating a PLC (Programmable Logic Controller) and its peripherals, it enables automated control of various industrial equipment and processes. Over extended periods of operation, the components integrated within the PLC control cabinet experience heat loss due to rising temperatures, leading to performance degradation and even potential failure. Therefore, the PLC control cabinet's heat dissipation design directly impacts its lifespan and stability.

[0003] Natural heat dissipation is a common heat dissipation method used in existing PLC control cabinets. This method utilizes air convection and heat radiation, with well-designed air inlets and outlets on the cabinet body to promote efficient air circulation inside and outside the cabinet, removing heat from the cabinet. However, this method is less effective. Additionally, some PLC control cabinets use forced air cooling, liquid cooling, and heat pipe technology. While these methods offer good heat dissipation, they carry high construction and operating costs.

[0004] The combination of natural heat dissipation and cooling fans is an effective way to save energy, reduce consumption and control costs in existing PLC control cabinets. However, the above heat dissipation structure still has the possibility of being optimized and its heat dissipation effect needs to be improved. Utility Model Content

[0005] The purpose of the utility model is to provide a PLC control device with a heat dissipation structure for electrical automation, which optimizes the heat dissipation structure of the existing PLC control cabinet combining natural heat dissipation with a heat dissipation fan, thereby improving the heat dissipation effect.

[0006] The utility model is achieved through the following technical solutions:

[0007] A PLC control device with a heat dissipation structure for electrical automation includes a PLC control cabinet body. The PLC control cabinet body is provided with an air inlet and an air outlet. A heat dissipation fan is installed at the air inlet. When the heat dissipation fan is started, air outside the PLC control cabinet body is sucked into the PLC control cabinet body through the air inlet, and an air duct is formed inside the PLC control cabinet body. Air enters the PLC control cabinet body through the air inlet and exits the PLC control cabinet body through the air outlet, thereby promoting air circulation inside and outside the PLC control cabinet body and removing heat from the PLC control cabinet body.

[0008] The device further comprises a connecting plate and a plurality of heat dissipation pipes fixed to one side wall of the connecting plate, wherein the plurality of heat dissipation pipes are distributed in parallel and at intervals, a plurality of through holes are provided on the connecting plate, and the plurality of through holes correspond to and are connected to the plurality of heat dissipation pipes one by one, and the connecting plate is fixed to the outer wall of the PLC control cabinet at the air outlet and covers the air outlet, and the plurality of heat dissipation pipes all penetrate the air outlet and extend to the interior of the PLC control cabinet, and the air inside and outside the PLC control cabinet can circulate through the interior of the heat dissipation pipes and the through holes; the device combines natural heat dissipation, heat dissipation by heat dissipation pipes and a heat dissipation fan, which is not only conducive to controlling costs, but also can improve the heat dissipation effect.

[0009] Further restrictions, the air inlet and outlet are distributed up and down, and are respectively located on two opposite side walls of the PLC control cabinet body. Under the driving action of the cooling fan, it is conducive to forming an up and down air duct in the PLC control cabinet body, thereby enhancing the heat dissipation effect inside the PLC control cabinet body.

[0010] Further restrictions, the cooling fan is installed on the inner wall of the air inlet of the PLC control cabinet, and the outer wall of the air inlet of the PLC control cabinet is removably installed with a first dustproof net. The first dustproof net can effectively block dust from entering the PLC control cabinet through the air inlet. When a lot of dust is attached to the first dustproof net, the first dustproof net can be removed for cleaning or replacement to ensure its ventilation efficiency.

[0011] Further restrictions, a second dustproof net is installed at the inner end of each of the heat pipes, which can effectively prevent dust from entering the PLC control cabinet through the inside of the heat pipe at the air outlet. When the cooling fan is started, the air in the PLC control cabinet enters the heat pipe through the second dustproof net and flows out of the PLC control cabinet. The accelerated air can blow away the dust on the outer surface of the second dustproof net, which is conducive to cleaning the second dustproof net.

[0012] Further restrictions, the connecting plate is detachably connected to the outer wall of the PLC control cabinet body by multiple screws, and the connecting plate can be removed to take out the heat pipe and the second dustproof net to clean the dust attached to the second dustproof net to restore the ventilation efficiency.

[0013] As a further limitation, the second dustproof net is detachably connected to the heat pipe by a plurality of screws. When a lot of dust adheres to the second dustproof net, the second dustproof net can be removed for cleaning or replacement to ensure its ventilation efficiency.

[0014] Further limitations, the heat dissipation pipe and the connecting plate are both made of copper or aluminum alloy, and the heat dissipation pipe and the connecting plate are integrally formed, and have high thermal conductivity.

[0015] Further limitations are that the heat dissipation pipe is made of copper, the connecting plate is made of aluminum alloy, and the heat dissipation pipe and the connecting plate are welded. Although both copper and aluminum alloy have high thermal conductivity, the thermal conductivity of copper is slightly higher than that of aluminum alloy, but the price of copper is higher than that of aluminum alloy. The heat dissipation pipe is mainly used to increase the heat dissipation area. The heat dissipation pipe is made of copper with better thermal conductivity, and the connecting plate is made of aluminum alloy, which can help save costs.

[0016] As a further limitation, the heat dissipation tube is a square tube or a round tube, and correspondingly, the through hole is a square through slot or a round through hole. Using a plurality of heat dissipation tubes can increase the heat dissipation area and improve the heat dissipation effect.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The PLC control cabinet of the device is equipped with a heat dissipation structure consisting of an air inlet, an air outlet, a heat dissipation fan, a plurality of heat dissipation pipes and a connecting plate. When the heat dissipation fan is on standby, the PLC control cabinet can dissipate heat naturally through the air inlet, the air outlet and the heat dissipation pipes. Based on the principles of air convection and heat radiation, the air inside and outside the PLC control cabinet can form an effective circulation through the air inlet and the air outlet to remove the heat inside the PLC control cabinet. A plurality of heat dissipation pipes are arranged in the air outlet to increase the heat dissipation area, enhance heat radiation and heat conduction, and thus improve the heat dissipation effect. When the temperature inside the PLC control cabinet is high and the cooling fan is started to dissipate heat, the cooling fan can promote the circulation of air inside and outside the PLC control cabinet, which is conducive to forming an air duct between the air inlet and the air outlet, accelerating the air circulation inside and outside the PLC control cabinet to take away the heat inside the PLC control cabinet. At the same time, at the air outlet, the air flow in the heat dissipation pipe is accelerated, thereby accelerating the removal of heat on the heat dissipation pipe. This device combines natural heat dissipation, heat dissipation by heat dissipation pipes and cooling fans, which is not only conducive to controlling costs, but also improves the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0020] Figure 1 This is a schematic diagram of the cross-sectional structure of the PLC control cabinet body in the present utility model;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the heat dissipation pipe in the present utility model;

[0022] Figure 3 This is a schematic diagram of the longitudinal cross-sectional structure of the heat dissipation pipe in the present utility model;

[0023] Figure 4 It is a schematic diagram of the transverse cross-sectional structure of the heat dissipation pipe in the present utility model.

[0024] The names of the components in the figure are: 1. PLC control cabinet body; 1.1. Air inlet; 1.2. Air outlet; 2. Cooling fan; 3. First dustproof net; 4. Second dustproof net; 5. Heat dissipation pipe; 6. Connecting plate; 6.1. Through hole. DETAILED DESCRIPTION

[0025] The following embodiments of the technical solution of the present invention are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0026] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] A PLC control device with a heat dissipation structure for electrical automation, such as Figure 1 As shown, it is mainly composed of a PLC control cabinet body 1, a cooling fan 2, a first dustproof net 3, a second dustproof net 4, a heat dissipation pipe 5 and a connecting plate 6.

[0028] like Figure 1 As shown, the top of the right side wall of the PLC control cabinet body 1 is provided with an air inlet 1.1, and the bottom of the left side wall is provided with an air outlet 1.2;

[0029] like Figure 1 As shown, the cooling fan 2 is installed on the inner wall of the air inlet 1.1 of the PLC control cabinet body 1. When the cooling fan 2 is started, the air outside the PLC control cabinet body 1 can be sucked into the inside of the PLC control cabinet body 1 through the air inlet 1.1, and it is beneficial to form an air duct inside the PLC control cabinet body 1. The air enters from the air inlet 1.1 of the PLC control cabinet body 1 and is discharged from the air outlet 1.2, thereby promoting the air circulation inside and outside the PLC control cabinet body 1 to take away the heat inside the PLC control cabinet body 1.

[0030] like Figure 1 As shown, the air inlet 1.1 and the air outlet 1.2 are distributed up and down. Under the driving action of the cooling fan 2, as shown in FIG. Figure 1As shown, it is beneficial to form an air duct flowing from top to bottom in the PLC control cabinet body 1, thereby enhancing the heat dissipation effect inside the PLC control cabinet body 1;

[0031] like Figure 1 As shown, a first dustproof net 3 is removably installed on the outer wall of the air inlet 1.1 of the PLC control cabinet body 1. The first dustproof net 3 can effectively block dust from entering the PLC control cabinet body 1 through the air inlet 1.1. When a lot of dust adheres to the first dustproof net 3, the first dustproof net 3 can be removed for cleaning or replacement to ensure its ventilation efficiency.

[0032] like Figures 1 to 4 As shown, a plurality of heat dissipation pipes 5 are welded to the right side wall of the connecting plate 6. The heat dissipation pipes 5 are arranged in parallel and spaced apart. A plurality of through holes 6.1 are opened on the connecting plate 6. The plurality of through holes 6.1 correspond to and are connected to the heat dissipation pipes 5 one by one. The connecting plate 6 is fixed to the air outlet 1.2 of the PLC control cabinet body 1. The outer wall covers the air outlet 1.2. The heat dissipation pipes 5 all pass through the air outlet 1.2 and extend into the interior of the PLC control cabinet body 1. The air inside and outside the PLC control cabinet body 1 can circulate through the interior of the heat dissipation pipes 5 and the through holes 6.1.

[0033] like Figures 1 to 4 As shown, the inner end of each heat pipe 5 is installed with a second dustproof net 4, which can effectively prevent dust from entering the PLC control cabinet body 1 through the heat pipe 5 at the air outlet 1.2. When the cooling fan 2 is started, the air in the PLC control cabinet body 1 enters the heat pipe 5 through the second dustproof net 4 and flows out of the PLC control cabinet body 1. The air flow direction is as follows: Figure 1 、 Figure 3 and Figure 4 In the direction indicated by the middle arrow, the accelerated air can sweep away the dust on the outer surface of the second dustproof net 4, which is beneficial to cleaning the second dustproof net 4.

[0034] Preferably, in this embodiment, Figure 1 As shown, the connecting plate 6 is detachably connected to the outer wall of the PLC control cabinet body 1 by a plurality of screws. The connecting plate 6 can be removed to take out the heat pipe 5 and the second dustproof net 4 to clean the dust attached to the second dustproof net 4 and restore the ventilation efficiency.

[0035] like Figure 3 and Figure 4 As shown, the second dustproof net 4 is detachably connected to the heat pipe 5 by a plurality of screws. When a lot of dust adheres to the second dustproof net 4, the second dustproof net 4 can be removed for cleaning or replacement to ensure its ventilation efficiency.

[0036] Preferably, in this embodiment, the heat dissipation pipe 5 is made of copper, the connecting plate 6 is made of aluminum alloy, and the heat dissipation pipe 5 and the connecting plate 6 are welded. Although both copper and aluminum alloy have high thermal conductivity, the thermal conductivity of copper is slightly higher than that of aluminum alloy, but the price of copper is higher than that of aluminum alloy. The heat dissipation pipe 5 is mainly used to increase the heat dissipation area. The heat dissipation pipe 5 is made of copper with better thermal conductivity, and the connecting plate 6 is made of aluminum alloy, which can help save costs.

[0037] Preferably, in this embodiment, Figures 2 to 4 As shown, the heat dissipation tube 5 is a square tube, and correspondingly, the through hole 6.1 is a square through slot. The use of a plurality of heat dissipation tubes 5 increases the heat dissipation area and improves the heat dissipation effect.

[0038] In addition, the heat dissipation tube 5 may also be a round tube, and accordingly, the through hole 6.1 is a round through hole. Using a plurality of heat dissipation tubes 5 increases the heat dissipation area and improves the heat dissipation effect.

[0039] The working principle of this embodiment is:

[0040] The air inlet 1.1, the air outlet 1.2, the cooling fan 2, the plurality of heat pipes 5 and the connecting plate 6 constitute the heat dissipation structure on the PLC control cabinet body 1;

[0041] When the cooling fan 2 is in standby mode, the PLC control cabinet can dissipate heat naturally through the air inlet 1.1, the air outlet 1.2, and the heat pipe 5. Based on the principles of air convection and heat radiation, the air inside and outside the PLC control cabinet body 1 can form an effective circulation through the air inlet 1.1 and the air outlet 1.2 to remove the internal heat of the PLC control cabinet body 1. A plurality of heat pipes 5 are provided in the air outlet 1.2 to increase the heat dissipation area, enhance heat radiation and heat conduction, and thus improve the heat dissipation effect.

[0042] When the cooling fan 2 is started, the air outside the PLC control cabinet body 1 is sucked into the inside of the PLC control cabinet body 1 through the air inlet 1.1, and an air duct is formed inside the PLC control cabinet body 1. The air is taken in from the air inlet 1.1 of the PLC control cabinet body 1 and discharged from the air outlet 1.2, thereby promoting the air circulation inside and outside the PLC control cabinet body 1 and accelerating the air circulation inside and outside the PLC control cabinet body 1 to take away the heat inside the PLC control cabinet body 1. At the same time, at the air outlet 1.2, the air flow in the heat dissipation pipe 5 is accelerated, thereby accelerating the removal of heat on the heat dissipation pipe 5. Specifically, the cooling fan 2 is started and stopped by the PLC controller or the single-chip microcomputer, and a temperature sensor is installed inside the PLC control cabinet body 1 to monitor the real-time temperature. When the temperature reaches a preset high temperature value, the PLC controller can control the cooling fan 2 to start, and when the temperature reaches a preset low temperature value, the PLC controller can control the cooling fan 2 to stop. This is an existing technology and has been widely used.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A PLC control device with a heat dissipation structure for electrical automation, comprising a PLC control cabinet body (1), an air inlet (1.1) and an air outlet (1.2) being provided on the PLC control cabinet body (1), a heat dissipation fan (2) being installed at the air inlet (1.1), and characterized in that: The invention also includes a connecting plate (6) and a plurality of heat dissipation pipes (5) fixed to a side wall of the connecting plate (6), wherein the plurality of heat dissipation pipes (5) are distributed in parallel and spaced apart, and the connecting plate (6) is provided with a plurality of through holes (6.1), wherein the plurality of through holes (6.1) correspond to and are connected to the plurality of heat dissipation pipes (5) in a one-to-one manner, and the connecting plate (6) is fixed to the outer wall of the air outlet (1.2) of the PLC control cabinet body (1) and covers the air outlet (1.2), and the plurality of heat dissipation pipes (5) all penetrate the air outlet (1.2) and extend into the interior of the PLC control cabinet body (1).

2. The PLC control device with a heat dissipation structure for electrical automation according to claim 1, characterized in that: The air inlet (1.1) and the air outlet (1.2) are distributed up and down and are respectively located on two opposite side walls of the PLC control cabinet body (1).

3. The PLC control device with a heat dissipation structure for electrical automation according to claim 1, characterized in that: The cooling fan (2) is installed on the inner wall of the air inlet (1.1) of the PLC control cabinet body (1), and a first dustproof net (3) is detachably installed on the outer wall of the air inlet (1.1) of the PLC control cabinet body (1).

4. The PLC control device with a heat dissipation structure for electrical automation according to claim 1, characterized in that: A second dustproof net (4) is installed at the inner end of each heat dissipation tube (5).

5. The PLC control device with a heat dissipation structure for electrical automation according to claim 4, characterized in that: The connecting plate (6) is detachably connected to the outer side wall of the PLC control cabinet body (1) via a plurality of screws.

6. The PLC control device with a heat dissipation structure for electrical automation according to claim 5, characterized in that: The second dustproof net (4) is detachably connected to the heat dissipation pipe (5) via a plurality of screws.

7. The PLC control device with a heat dissipation structure for electrical automation according to claim 1, characterized in that: The heat dissipation pipe (5) and the connecting plate (6) are both made of copper or aluminum alloy, and the heat dissipation pipe (5) and the connecting plate (6) are integrally formed.

8. The PLC control device with a heat dissipation structure for electrical automation according to claim 1, characterized in that: The heat dissipation pipe (5) is made of copper, the connecting plate (6) is made of aluminum alloy, and the heat dissipation pipe (5) and the connecting plate (6) are welded.

9. The PLC control device with a heat dissipation structure for electrical automation according to claim 1, characterized in that: The heat dissipation tube (5) is a square tube or a round tube, and correspondingly, the through hole (6.1) is a square through groove or a round through hole.

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