Ventilation and heat dissipation device of PLC control cabinet for industrial control system

Abstract

The invention discloses a ventilation and heat dissipation device of a PLC control cabinet for an industrial control system, and the device comprises a control cabinet, the front surface of the control cabinet is provided with a cabinet door, the top of the control cabinet is provided with an air outlet cover, the air outlet cover is provided with an air suction port, the air suction port is provided with a heat dissipation fan, the two sides of the control cabinet are provided with air inlet boxes, and the outer sides of the air inlet boxes are provided with air inlet windows. And a dustproof net is mounted in the air inlet box. Compared with a ventilation and heat dissipation mode of an existing PLC control cabinet for an industrial control system, the PLC control cabinet improves the airflow circulation efficiency through design, enables airflow to make full contact with the interior of the control cabinet, improves the heat exchange efficiency, achieves the efficient ventilation and heat dissipation effect, can remove dust on the surface of a dustproof net, and improves the safety of the control cabinet. And the heat dissipation effect is prevented from being influenced by blockage.

Description

Technical Field

[0001] The present invention relates to the field of control cabinet heat dissipation structures, and specifically to a ventilation and heat dissipation device for a PLC control cabinet used in an industrial control system. Background Art

[0002] A PLC control cabinet used in an industrial control system refers to a programmable control cabinet. A control cabinet refers to a complete set of control cabinets that can realize the control of motors and switches. The PLC control cabinet has protection functions such as overload, short circuit, and phase loss protection. The PLC integrated control cabinet has protection functions such as overload, short circuit, and phase loss protection, and can also be combined according to the actual control scale. The PLC control cabinet can adapt to various sizes of industrial automation control occasions, and can realize both single cabinet automatic control and multi-cabinet distributed (DCS) control systems composed of industrial Ethernet or industrial field bus networks.

[0003] However, the existing air outlet structure of the PLC control cabinet for industrial control systems is simple. In order to effectively prevent rain, dust, etc. from entering the control cabinet, only a louver with an opening slanting downwards is installed in the air outlet structure. However, the louver slanting downwards is not conducive to air flow. Both external air flow and internal heat flow through the louver, and the effect of efficient ventilation and heat dissipation cannot be achieved. At the same time, after long-term use of the louver, external dust will block the dust-proof net inside the louver, resulting in the inability of external air flow to enter the control cabinet and the difficulty of exhausting the heat inside the control cabinet. As a result, the control cabinet cannot be used normally, and there is even a risk of damage.

[0004] Therefore, it is particularly important to design a ventilation and heat dissipation device for a PLC control cabinet used in an industrial control system to solve the above-mentioned defects by improving the air flow efficiency and heat exchange efficiency and avoiding the blockage of the dust-proof net. Summary of the Invention

[0005] The present invention provides a ventilation and heat dissipation device for a PLC control cabinet used in an industrial control system to solve the problem of poor heat dissipation capacity existing in the PLC control cabinet for industrial control systems in the prior art.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows: A ventilation and heat dissipation device for a PLC control cabinet used in an industrial control system, including a control cabinet (1). An air outlet cover (3) is installed on the top of the control cabinet (1). An air suction port (301) is opened at the center of the air outlet cover (3). The air outlet cover (3) is internally connected to the control cabinet (1) through the air suction port (301). A heat dissipation fan (5) is installed at the air suction port (301). Air exhaust ports (4) are opened around the air outlet cover (3). The air outlet cover (3) is internally connected to the external environment through the air exhaust ports (4); An air inlet box (6) is installed on the side of the control cabinet (1). Air inlet windows (7) are installed on the outer sides of the air inlet box (6) facing the external environment. A dust-proof net (8) is installed inside the air inlet box (6), and a dust removal component (9) is also installed in the air inlet box (6) for removing dust from the dust-proof net (8).

[0007] Furthermore, a moisture-proof base (101) is installed at the bottom of the control cabinet (1). The moisture-proof base (101) is designed to be hollow, and a plurality of ventilation holes (102) are provided around the moisture-proof base (101). The moisture-proof base (101) communicates with the external environment through the ventilation holes (102).

[0008] Furthermore, a plurality of heat dissipation fins (103) are fixedly connected to the side of the control cabinet (1).

[0009] Furthermore, the control cabinet (1) has a cabinet door (2) that can be opened and closed.

[0010] Furthermore, the dust removal component (9) includes a threaded rod (901), a brush plate (902), a crank (903), and a collection box (904). The threaded rod (901) is rotatably connected to the front end inside the air inlet box (6). The brush plate (902) is connected to the threaded rod (901). The crank (903) is fixedly connected to the top end of the threaded rod (901). The collection box (904) is slidably connected to the bottom end inside the air inlet box (6).

[0011] Furthermore, the front end of the brush plate (902) is threadedly connected to the threaded rod (901) through a connecting sleeve (905). The collection box (904) is provided with a buckle groove on the outer side of the air inlet box (6).

[0012] Compared with the prior art, the advantages of the present invention are as follows: 1. In the present invention, through the cooperative design of the control cabinet, the air outlet cover, the air outlet, the heat dissipation fan, and the air inlet box, when the control cabinet is in use, the moisture-proof base and the plurality of heat dissipation fins can effectively increase the external heat dissipation area of the control cabinet, thereby improving the external heat dissipation effect of the control cabinet. The heat dissipation fan uses the method of external exhaust to suck air from the air inlet window into the air inlet box. By improving the efficiency of air flow, the air flow can fully contact the inside of the control cabinet, thereby improving the efficiency of heat exchange and further achieving the effect of efficient ventilation and heat dissipation.

[0013] 2. In the present invention, through the design of the dust removal component, the dust on the surface of the dust-proof net is regularly removed by the dust removal component, avoiding its blockage and affecting the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic three-dimensional structure diagram of the whole of the present invention; Figure 2 Schematic diagram of the air inlet box structure of the present invention; Figure 3 Cross-sectional view of the overall structure of the present invention; Figure 4 is Figure 3 Enlarged schematic view of part A in

[0015] In the figure: 1, control cabinet; 101, moisture-proof base; 102, ventilation hole; 103, heat dissipation fin; 2, cabinet door; 201, door handle; 202, locking rod; 203, guide sleeve; 3, air outlet cover; 301, air suction port; 4, air exhaust port; 5, heat dissipation fan; 6, air inlet box; 7, air inlet window; 8, dust-proof net; 9, dust removal assembly; 901, threaded rod; 902, brush plate; 903, crank; 904, collection box; 905, connecting sleeve. Specific implementation manner

[0016] The present invention will be further described below with reference to the drawings and embodiments.

[0017] Please refer to Figures 1-4 , this embodiment discloses a ventilation and heat dissipation device for a PLC control cabinet used in an industrial control system, including a control cabinet 1, a cabinet door 2 is installed on the front of the control cabinet 1, an air outlet cover 3 is installed on the top of the control cabinet 1, air exhaust ports 4 are opened on the four sides inside the air outlet cover 3, a heat dissipation fan 5 is installed at the connection between the inside of the air outlet cover 3 and the control cabinet 1, air inlet boxes 6 are installed on both the left and right sides of the control cabinet 1, air inlet windows 7 are installed on the outer sides of the two air inlet boxes 6, dust-proof nets 8 are installed on the inner sides of the two air inlet boxes 6 close to the control cabinet 1, and dust removal assemblies 9 are installed inside the two air inlet boxes 6 and outside the dust-proof nets 8. The dust removal assembly 9 is used to remove dust from the dust-proof net 8. When the control cabinet 1 is in use, the heat dissipation fan 5 is started to suck air from the air inlet window 7 into the air inlet box 6 by means of external exhaust, filter the dust in the air by using the dust-proof net 8, and the filtered air enters the control cabinet 1 and carries the internal heat and finally discharges from the air exhaust port 4, so as to improve the efficiency of air flow circulation, and further achieve the effect of efficient ventilation and heat dissipation. At the same time, the dust on the surface of the dust-proof net 8 is removed regularly by using the dust removal assembly 9 to avoid its blockage affecting the heat dissipation effect.

[0018] A moisture-proof base 101 is installed at the bottom of the control cabinet 1. The inner side of the moisture-proof base 101 is designed to be hollow, and a plurality of groups of ventilation holes 102 are opened on the four sides of the moisture-proof base 101. The control cabinet 1 is elevated by using the moisture-proof base 101 to achieve the purpose of isolating and preventing moisture from the ground. At the same time, air flow can pass through the ventilation holes 102 and flow from the bottom of the control cabinet 1, further improving the heat dissipation effect at the bottom of the control cabinet 1.

[0019] On both the left and right sides of the control cabinet 1, multiple groups of heat dissipation fins 103 are fixedly connected. The multiple groups of heat dissipation fins 103 are equally spaced on the left and right sides of the control cabinet 1. The multiple groups of heat dissipation fins 103 can effectively increase the external heat dissipation area of the control cabinet 1, thereby improving the external heat dissipation effect of the control cabinet 1.

[0020] The cabinet door 2 is rotatably connected to one end of the control cabinet 1 through a hinge. A door handle 201 is rotatably connected to the outer side of the cabinet door 2. Two locking rods 202 are rotatably connected to the inner side of the door handle 201. At positions corresponding to the two locking rods 202 on the inner side of the cabinet door 2, guide sleeves 203 are fixedly connected. The locking rods 202 are slidably connected to the guide sleeves 203. When the cabinet door 2 is closed, the two locking rods 202 are inserted into the inner side of the control cabinet 1 to fix the cabinet door 2. By rotating the door handle 201, the two locking rods 202 can be simultaneously driven to slide and contract inside the guide sleeves 203, releasing the fixation of the cabinet door 2. When the heat inside the control cabinet 1 cannot dissipate for a long time, the cabinet door 2 can be opened immediately for heat dissipation.

[0021] Multiple groups of air exhaust openings 4 are equally spaced on the outer side of the air outlet cover 3. An air suction opening 301 is opened at the center of the air outlet cover 3. The heat dissipation fan 5 is installed inside the air suction opening 301. When the heat dissipation fan 5 is working, external air is inhaled into the air inlet box 6 by means of external air exhaust. The air carrying heat is finally inhaled into the inner side of the air outlet cover 3 through the air suction opening 301, and finally the heat is quickly discharged through the multiple groups of air exhaust openings 4.

[0022] The dust removal component 9 includes a threaded rod 901, a brush plate 902, a crank 903 and a collection box 904. The threaded rod 901 is rotatably connected to the front end inside the air inlet box 6. The brush plate 902 is connected to the threaded rod 901. The crank 903 is fixedly connected to the top of the threaded rod 901. The collection box 904 is slidably connected to the bottom end inside the air inlet box 6.

[0023] The brush plate 902 is threadedly connected to the threaded rod 901 through a connecting sleeve 905. The collection box 904 is provided with a buckle groove on the outer side of the air inlet box 6. By rotating the crank 903, the threaded rod 901 is driven to rotate. Under the connection of the connecting sleeve 905, the brush plate 902 is driven to move up and down, thereby removing the dust on the surface of the dust-proof net 8 and preventing it from being blocked and affecting the heat dissipation effect. The dust brushed off falls into the collection box 904 and can be taken out for cleaning.

[0024] In this embodiment, the implementation scenario is specifically as follows: When the control cabinet 1 is in use, the control cabinet 1 is elevated by using the moisture-proof base 101 to achieve the purpose of isolating and moisture-proofing from the ground. At the same time, air flow can pass through the ventilation holes 102 from the bottom of the control cabinet 1, improving the heat dissipation effect at the bottom of the control cabinet 1. Multiple groups of heat dissipation fins 103 can effectively increase the external heat dissipation area of the control cabinet 1, thereby improving the external heat dissipation effect of the control cabinet 1. Start the heat dissipation fan 5 and use the external exhaust method to suck air from the air inlet window 7 into the air inlet box 6, filter the dust in the air by using the dust-proof net 8. The filtered air enters the control cabinet 1, carries the internal heat and finally discharges from the air outlet 4, thereby improving the efficiency of air flow circulation, and further achieving the effect of efficient ventilation and heat dissipation. At the same time, regularly use the dust removal component 9 to remove the dust on the surface of the dust-proof net 8 to prevent it from being blocked and affecting the heat dissipation effect. The whole operation process is simple and convenient. Compared with the existing ventilation and heat dissipation methods of PLC control cabinets used in industrial control systems, the present invention improves the efficiency of air flow circulation by design, enables the air flow to fully contact the inside of the control cabinet 1, thereby improving the efficiency of heat exchange, and further achieving the effect of efficient ventilation and heat dissipation. At the same time, it can remove the dust on the surface of the dust-proof net 8 to prevent it from being blocked and affecting the heat dissipation effect.

[0025] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. The embodiments described in the present invention are only descriptions of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention. Among the various specific technical features described in the above specific embodiments, they can be combined in any suitable way without contradiction. As long as such a combination does not violate the idea of the present invention, it should also be regarded as the content disclosed in the present disclosure. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods.

[0026] The present invention is not limited to the specific details in the above embodiments. Within the technical concept scope of the present invention and without departing from the design idea of the present invention, various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope of the present invention. The technical content claimed by the present invention has been fully recorded in the claims.

Claims

1. A ventilation and heat dissipation device for a PLC control cabinet for an industrial control system, comprising a control cabinet (1), characterized in that: An air outlet cover (3) is installed on the top of the control cabinet (1), an air suction port (301) is provided at the center of the air outlet cover (3), the air outlet cover (3) is connected to the inside of the control cabinet (1) through the air suction port (301), a cooling fan (5) is installed at the air suction port (301), exhaust ports (4) are provided around the air outlet cover (3), and the air outlet cover (3) is connected to the external environment through the exhaust ports (4); An air inlet box (6) is installed on the side of the control cabinet (1), and an air inlet window (7) is installed on the outer side of the air inlet box (6) facing the external environment. A dustproof net (8) is installed inside the air inlet box (6), and a dust removal component (9) is also installed in the air inlet box (6) for removing dust from the dustproof net (8).

2. The ventilation and heat dissipation device for a PLC control cabinet for an industrial control system according to claim 1 is characterized in that: A moisture-proof base (101) is installed at the bottom of the control cabinet (1); the moisture-proof base (101) is designed to be hollow; a plurality of ventilation holes (102) are provided around the moisture-proof base (101); the moisture-proof base (101) is connected to the external environment through the ventilation holes (102).

3. The ventilation and heat dissipation device for a PLC control cabinet for an industrial control system according to claim 1 is characterized in that: A plurality of groups of heat dissipation fins (103) are fixedly connected to the side of the control cabinet (1).

4. The ventilation and heat dissipation device for a PLC control cabinet for an industrial control system according to claim 1 is characterized in that: The control cabinet (1) has a cabinet door (2) which can be opened and closed.

5. The ventilation and heat dissipation device for a PLC control cabinet for an industrial control system according to claim 1, characterized in that: The dust removal assembly (9) comprises a threaded rod (901), a brush plate (902), a crank (903) and a collection box (904); the threaded rod (901) is rotatably connected to the front end of the air inlet box (6); the brush plate (902) is connected to the threaded rod (901); the crank (903) is fixedly connected to the top end of the threaded rod (901); and the collection box (904) is slidably connected to the bottom end of the air inlet box (6).

6. The ventilation and heat dissipation device for a PLC control cabinet for an industrial control system according to claim 5, characterized in that: The front end of the brush plate (902) is threadedly connected to the threaded rod (901) via a connecting sleeve (905), and the collecting box (904) is located on the outside of the air inlet box (6) and is provided with a buckle groove.

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