Circulating ventilation PLC control cabinet

Abstract

The utility model discloses a circulating ventilation PLC (Programmable Logic Controller) control cabinet, which relates to the technical field of control cabinets and comprises a cabinet body, relays, circuit breakers, PLCs and frequency converters are respectively mounted at the front ends of four groups of element mounting plates, and an air guide assembly capable of circulating ventilation and accelerating cooling is arranged at the rear end in the cabinet body. According to the circulating ventilation PLC control cabinet, through the arrangement of the rear shell, the front panel, the air outlet groove, the main air guide pipe, the branch pipes, the air inlet square pipes and the air inlets, when the circulating ventilation PLC control cabinet is used, external air flows in along the air inlets in the side edges of the air inlet square pipes, and cold air flows into the branch pipes along the main air guide pipe and is sprayed out from the air outlet groove in the front panel; and cold air is blown from the back of the internal relay, the circuit breaker, the PLC and the frequency converter, so that heat on the surfaces of the internal relay, the circuit breaker, the PLC and the frequency converter can be taken away to the greatest extent, the heat dissipation efficiency is improved, the function of accelerating heat dissipation through circulating ventilation is realized, and the problem that the device does not have the function of accelerating heat dissipation through circulating ventilation is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to control cabinet technical field, concretely is a kind of PLC control cabinet of circulating ventilation. BACKGROUND

[0002] PLC integrated control cabinet has overload, short circuit, open-phase protection and other protection functions. Because its structure is compact, stable, complete function, and can be combined according to actual control scale size, it can realize single cabinet automatic control, and can also realize multi-cabinet through industrial ethernet or industrial fieldbus network to form distributed (DCS) control system, and is widely used in power, metallurgy, chemical industry, papermaking, environmental protection sewage treatment and other industries.

[0003] The common PLC control cabinet on the market is mostly similar in structure, mainly with steel cabinet body, usually with circuit breaker, relay, frequency converter, PLC controller and other electronic components inside, which has some functional deficiencies in actual use process, and has certain improvement space, such as the PLC control cabinet on the market is equipped with cooling fan, which replaces the air inside the cabinet body through fan suction, but the air circulation is mostly through the surface of components inside the control cabinet, and the contact with the whole component is less, and the heat taken away is less, so there is still room for further improvement in heat dissipation efficiency, and it does not have the function of circulating ventilation and accelerating heat dissipation.

[0004] Now, a new type of PLC control cabinet with circulating ventilation is proposed to solve the above problems. INVENTION CONTENTS

[0005] The utility model aims at providing a kind of PLC control cabinet with circulating ventilation to solve the problem of not having the function of circulating ventilation and accelerating heat dissipation in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of PLC control cabinet with circulating ventilation, including cabinet body, the left and right sides of the inside of the cabinet body are vertically welded with side mounting frame, the front end of the side mounting frame is fixedly connected with four groups of component mounting plate, the inside of the component mounting plate is provided with reserved slot, the front end of four groups of the component mounting plate is respectively provided with relay, circuit breaker, PLC controller, frequency converter, the left side of the front end of the cabinet body is hinged with cabinet door, the bottom of the rear end of the cabinet door is installed with negative pressure fan, the rear end of the inside of the cabinet body is provided with air guide assembly that can circulate ventilation and accelerate cooling.

[0007] The air guide assembly includes a rear shell welded at the rear end of the cabinet body, the front end of the rear shell is fixedly connected with a front panel, the inside of the front panel is provided with a plurality of air outlet grooves, the right side of the inside of the rear shell is welded with a main air guide pipe, the left side of the main air guide pipe is welded with a plurality of branch pipes, the bottom of the right side of the cabinet body is fixedly connected with an air inlet square pipe, and the right side of the air inlet square pipe is provided with an air inlet.

[0008] Preferably, the rear end of the front panel and the front end of the branch pipe are matched, and the positions of the air outlet grooves and the branch pipes are one-to-one corresponding.

[0009] Preferably, the positions and sizes of the reserved grooves and the air outlet grooves are one-to-one corresponding, and the air outlet grooves are arranged at equal intervals.

[0010] Preferably, the left side of the air inlet square pipe is connected with the right side of the rear shell, and the interiors of the air outlet grooves, the main air guide pipe, the branch pipes and the air inlet square pipe are communicated.

[0011] Preferably, the top end of the air inlet square pipe is inserted with a dustproof filter plate from top to bottom, the top end of the dustproof filter plate is fixedly connected with a top fixed plate, and the front and rear ends of the top of the top fixed plate are respectively inserted with fixed bolts.

[0012] Preferably, the front and rear ends of the dustproof filter plate are matched with the front and rear ends in the interior of the air inlet square pipe, and the bottom end of the dustproof filter plate is matched with the bottom end in the interior of the air inlet square pipe.

[0013] Preferably, the bottom of the front end of the cabinet door is fixedly connected with a square shell, the front end of the interior of the square shell is welded with a cross fixed frame, the front end of the cross fixed frame is covered with a dustproof net, the right side of the rear end of the cross fixed frame is mounted with a wind speed sensor, the left side of the rear end of the cross fixed frame is mounted with a smoke sensor, and the middle position of the rear end of the cabinet door is fixedly connected with a loudspeaker.

[0014] Preferably, the rear end of the wind speed sensor and the smoke sensor is away from the front end of the negative pressure fan, and the wind speed sensor, the smoke sensor, the loudspeaker and the negative pressure fan are electrically connected.

[0015] Compared with the prior art, the PLC control cabinet with circulating ventilation has the advantages that the PLC control cabinet with circulating ventilation not only realizes the functions of circulating ventilation and accelerated heat dissipation, but also realizes the functions of air inlet dust prevention and air outlet monitoring.

[0016] (1) by being provided with rear shell, front plate, air outlet slot, main air duct, branch pipe, air inlet square pipe and air inlet, when in use, the cabinet body serves as the main body of the control cabinet, providing physical support and protection for the installation and fixation of internal relays, circuit breakers, PLC controllers and frequency converters, the cabinet door is in a closed state, the negative pressure fan outside the cabinet door exhausts hot air inside the cabinet body, as the air pressure inside the cabinet body decreases, external air rushes in through the air inlets along the side edges of the air inlet square pipe, the cold air flows into the branch pipes along the main air duct and is sprayed out from the air outlet slots of the front plate, the cold air blows behind the internal relays, circuit breakers, PLC controllers and frequency converters, which can maximize the heat removal from the surfaces of the relays, circuit breakers, PLC controllers and frequency converters, improve the heat dissipation efficiency and realize the functions of circulating ventilation and accelerated heat dissipation;

[0017] (2) by being provided with a dust filter plate, a top fixing plate and fixing bolts, when in use, as external air rushes in through the air inlets along the side edges of the air inlet square pipe, the dust filter plate inside the air inlet square pipe intercepts and filters the dust in the air, preventing dust accumulation inside the cabinet body, when the dust filter plate needs to be replaced in the later period, the top fixing plate and the dust filter plate can be taken out together for cleaning and replacement by only loosening and taking out the fixing bolts, thus the function of dust prevention during air inlet is realized;

[0018] (3) by being provided with a square shell, a cross-shaped fixing frame, a dust screen, a wind speed sensor, a smoke sensor and a loudspeaker, when in use, as the negative pressure fan exhausts hot air, the air is filtered again through the dust screen, the wind speed sensor can sense the exhaust air speed in real time and determine whether the dust filter plate needs to be cleaned and replaced, when a short circuit occurs inside the equipment and a fire breaks out, the smoke sensor can sense the smoke signal in time, the loudspeaker emits corresponding prompt sounds according to the feedback of the sensor, reminding the staff to check in time, thus the function of air outlet monitoring is realized. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a front view structural schematic diagram of the utility model;

[0020] Figure 2 It is a front view structural schematic diagram of the cabinet body of the utility model;

[0021] Figure 3 It is a front view partial sectional structural schematic diagram of the rear shell of the utility model;

[0022] Figure 4 It is an enlarged structural schematic diagram of the air inlet square pipe of the utility model from the side;

[0023] Figure 5 It is an enlarged structural schematic diagram of the square shell of the utility model from the back;

[0024] Figure 6 It is a front view structural schematic diagram of the cabinet door in a closed state.

[0025] In the figure: 1, cabinet body; 2, side mounting frame; 3, relay; 4, circuit breaker; 5, component mounting plate; 6, reserved slot; 7, PLC controller; 8, frequency converter; 9, rear shell; 10, front panel; 11, air outlet slot; 12, main air guide pipe; 13, branch pipe; 14, air inlet square pipe; 15, air inlet; 16, dust filter plate; 17, top fixing plate; 18, fixing bolt; 19, cabinet door; 20, square shell; 21, cross fixing frame; 22, dustproof net; 23, air speed sensor; 24, smoke sensor; 25, loudspeaker; 26, negative pressure fan. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0027] Embodiment 1: please refer to Figures 1-6 A circulating ventilation PLC control cabinet, comprising a cabinet body 1, the left and right sides inside the cabinet body 1 are vertically welded with side mounting frames 2 respectively, four groups of component mounting plates 5 are fixedly connected to the front ends of the side mounting frames 2, the inside of the component mounting plate 5 is provided with a reserved slot 6, the front ends of the four groups of component mounting plates 5 are respectively provided with relays 3, circuit breakers 4, PLC controllers 7 and frequency converters 8, the left side of the front end of the cabinet body 1 is hingedly connected with a cabinet door 19, the bottom of the rear end of the cabinet door 19 is provided with a negative pressure fan 26, the rear end inside the cabinet body 1 is provided with an air guide assembly capable of circulating ventilation and accelerating cooling.

[0028] Please refer to Figures 1-6 The circulating ventilation PLC control cabinet further comprises an air guide assembly, the air guide assembly comprises a rear shell 9, the rear shell 9 is welded to the rear end inside the cabinet body 1, the front end of the rear shell 9 is fixedly connected with a front panel 10, the inside of the front panel 10 is provided with a plurality of air outlet slots 11, the right side inside the rear shell 9 is welded with a main air guide pipe 12, the left side of the main air guide pipe 12 is welded with a plurality of branch pipes 13, the bottom of the right side of the cabinet body 1 is fixedly connected with an air inlet square pipe 14, the right side of the air inlet square pipe 14 is provided with an air inlet 15.

[0029] The rear end of the front panel 10 and the front end of the branch pipe 13 are in close contact, the positions of the air outlet slots 11 and the branch pipes 13 are one-to-one corresponding, the positions and sizes of the reserved slots 6 and the air outlet slots 11 are one-to-one corresponding, the air outlet slots 11 are arranged at equal intervals, the left side of the air inlet square pipe 14 and the right side of the rear shell 9 are connected, the inside of the air outlet slots 11, the main air guide pipe 12, the branch pipes 13 and the air inlet square pipe 14 are communicated, and heat dissipation can be accelerated while circulating ventilation.

[0030] Specifically, as shown in Figure 1 , Figure 2 and Figure 4 , the external air flows into the air inlet 15 along the side of the air inlet square tube 14, the cold air flows into the branch pipe 13 along the main guide pipe 12, and is blown out from the air outlet slot 11 of the front plate 10, the cold air blows from the back of the internal relay 3, the circuit breaker 4, the PLC controller 7 and the frequency converter 8, which can maximize the heat dissipation efficiency.

[0031] In example 2, the top end of the air inlet square tube 14 is inserted with a dustproof filter plate 16 from top to bottom, the top end of the dustproof filter plate 16 is fixedly connected with a top fixed plate 17, the front and rear ends of the top of the top fixed plate 17 are respectively inserted with fixed bolts 18, the front and rear ends of the dustproof filter plate 16 are respectively matched with the front and rear ends inside the air inlet square tube 14, and the bottom end of the dustproof filter plate 16 is matched with the bottom end inside the air inlet square tube 14, which can filter the dust in the air inlet.

[0032] Specifically, as shown in Figure 1 , Figure 3 and Figure 4 , the dustproof filter plate 16 inside the air inlet square tube 14 intercepts and filters the dust in the air, preventing dust accumulation inside the cabinet 1, and when the dustproof filter plate 16 needs to be replaced in the later period, the fixed bolts 18 can be loosened and pulled out, and the top fixed plate 17 together with the dustproof filter plate 16 can be pulled out for cleaning and replacement.

[0033] In example 3, the bottom of the front end of the cabinet door 19 is fixedly connected with a square shell 20, the front end of the inside of the square shell 20 is welded with a cross fixed frame 21, the front end of the cross fixed frame 21 is covered with a dustproof net 22, the right side of the rear end of the cross fixed frame 21 is installed with a wind speed sensor 23, the left side of the rear end of the cross fixed frame 21 is installed with a smoke sensor 24, the middle position of the rear end of the cabinet door 19 is fixedly connected with a loudspeaker 25, and the rear end of the wind speed sensor 23 and the smoke sensor 24 is away from the front end of the negative pressure fan 26, and the wind speed sensor 23, the smoke sensor 24, the loudspeaker 25 and the negative pressure fan 26 are electrically connected to monitor the air outlet.

[0034] Specifically, as shown in Figure 1 , Figure 5 and Figure 6 , the wind speed sensor 23 can sense the exhaust air speed in real time to determine whether the dustproof filter plate 16 needs to be cleaned and replaced, and when a short circuit fire occurs inside the equipment, the smoke sensor 24 can sense the smoke signal in time, and the loudspeaker 25 can emit corresponding prompt sound according to the feedback of the sensor to remind the staff to check in time.

[0035] Working principle: the utility model discloses in use, first, the cabinet body 1 is as the main body of control cabinet, provides physical support and protection for the installation fixed of internal relay 3, circuit breaker 4, PLC controller 7, frequency converter 8, the cabinet door 19 is in closed state, the negative pressure fan 26 of cabinet door 19 outside will the hot air of cabinet body 1 inside exhaust, along with the air pressure of cabinet body 1 inside reduces, the air of outside along with the air inlet 15 of the side of air inlet square tube 14 gushes in, cold air flows into branch pipe 13 along with main guide tube 12, and sprays from the air outlet groove 11 of front panel 10, cold air blows from the back of internal relay 3, circuit breaker 4, PLC controller 7, frequency converter 8, can take away the heat on its surface to the maximum extent, improves the heat dissipation efficiency. along with the air of outside along with the air inlet 15 of the side of air inlet square tube 14 gushes in, the dust filter plate 16 in the inside of air inlet square tube 14 carries out intercepting filtration to the dust in air, prevents causing the dust accumulation in the inside of cabinet body 1, when needing to replace dust filter plate 16 in later period, just loosens and extracts fixed bolt 18, can extract top fixed plate 17 together with dust filter plate 16 and clean up replacement. along with the hot air exhaust of negative pressure fan 26, air is filtered again through dust screen 22, and wind speed sensor 23 can real-time response the wind speed of exhaust, judges whether dust filter plate 16 needs cleaning replacement, when the short circuit of equipment inside occurs and fires, smoke sensor 24 can in time response smoke signal, and speaker 25 sends corresponding prompt sound according to the feedback of sensor, reminds staff to check in time.

[0036] It is obvious for those skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A PLC control cabinet with circulation ventilation, comprising a cabinet body (1), characterized in that: The left and right sides of the inside of the cabinet body (1) are respectively vertically welded with side mounting racks (2), the front end of the side mounting rack (2) is fixedly connected with four element mounting plates (5), the inside of the element mounting plate (5) is provided with a reserved groove (6), the front end of the four element mounting plates (5) is respectively provided with a relay (3), a circuit breaker (4), a PLC controller (7) and a frequency converter (8), the left side of the front end of the cabinet body (1) is hingedly connected with a cabinet door (19), the bottom of the rear end of the cabinet door (19) is provided with a negative pressure fan (26), the rear end of the inside of the cabinet body (1) is provided with a wind guide assembly which can circulate ventilation to accelerate cooling. The wind guide assembly comprises a rear shell (9), the rear shell (9) is welded at the rear end of the inside of the cabinet body (1), the front end of the rear shell (9) is fixedly connected with a front plate (10), the inside of the front plate (10) is provided with a plurality of air outlet grooves (11), the right side of the inside of the rear shell (9) is welded with a main wind guide pipe (12), the left side of the main wind guide pipe (12) is welded with a plurality of branch pipes (13), the bottom of the right side of the cabinet body (1) is fixedly connected with an air inlet square pipe (14), the right side of the air inlet square pipe (14) is provided with an air inlet (15).

2. The PLC control cabinet of claim 1, wherein: The rear end of the front plate (10) and the front end of the branch pipe (13) are fitted, the positions of the air outlet groove (11) and the branch pipe (13) are one-to-one corresponding.

3. The PLC control cabinet of claim 1, wherein: The positions and sizes of the reserved groove (6) and the air outlet groove (11) are one-to-one corresponding, the air outlet grooves (11) are arranged at equal intervals.

4. The PLC control cabinet of claim 1, wherein: The left side of the air inlet square pipe (14) and the right side of the rear shell (9) are connected, the inside of the air outlet groove (11), the main wind guide pipe (12), the branch pipe (13) and the air inlet square pipe (14) are communicated.

5. The PLC control cabinet of claim 1, wherein: The top end of the air inlet square pipe (14) is inserted with a dustproof filter plate (16) from top to bottom, the top end of the dustproof filter plate (16) is fixedly connected with a top fixed plate (17), the front and rear ends of the top of the top fixed plate (17) are respectively inserted with fixed bolts (18).

6. A PLC control cabinet with recirculating ventilation according to claim 5, characterized in that: The front and rear ends of the dustproof filter plate (16) are fitted with the front and rear ends of the inside of the air inlet square pipe (14), the bottom end of the dustproof filter plate (16) is fitted with the bottom end of the inside of the air inlet square pipe (14).

7. The PLC control cabinet of claim 1, wherein: The bottom of the front end of the cabinet door (19) is fixedly connected with a square shell (20), the front end of the inside of the square shell (20) is welded with a cross fixed frame (21), the front end of the cross fixed frame (21) is covered with a dustproof net (22), the right side of the rear end of the cross fixed frame (21) is provided with a wind speed sensor (23), the left side of the rear end of the cross fixed frame (21) is provided with a smoke sensor (24), the rear end of the cabinet door (19) is fixedly connected with a loudspeaker (25) at the middle position.

8. A PLC control cabinet with recirculating ventilation according to claim 7, characterized in that: The rear end of the wind speed sensor (23) and the smoke sensor (24) and the front end of the negative pressure fan (26) are at a distance, the wind speed sensor (23), the smoke sensor (24), the loudspeaker (25) and the negative pressure fan (26) are electrically connected.

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