CN113573556A - Temperature control device for PLC control cabinet - Google Patents
Temperature control device for PLC control cabinet Download PDFInfo
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- CN113573556A CN113573556A CN202110854461.5A CN202110854461A CN113573556A CN 113573556 A CN113573556 A CN 113573556A CN 202110854461 A CN202110854461 A CN 202110854461A CN 113573556 A CN113573556 A CN 113573556A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20145—Means for directing air flow, e.g. ducts, deflectors, plenum or guides
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20172—Fan mounting or fan specifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20209—Thermal management, e.g. fan control
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20381—Thermal management, e.g. evaporation control
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- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a temperature control device for a PLC control cabinet, which comprises a control box, a space heat dissipation mechanism and a module heat dissipation mechanism, wherein the control box is provided with a heat dissipation plate; the module heat dissipation mechanism comprises a water storage slow release unit, a wind power diffusion unit, a flow control unit, a heat dissipation sticking block unit and an air outlet cover unit. The temperature control device for the PLC control cabinet can provide two heat dissipation modes for the control cabinet by utilizing the space heat dissipation mechanism and the module heat dissipation mechanism, wherein one mode is to dissipate heat in an internal space, and the other mode is to dissipate heat at a fixed point aiming at a heating element, so that the heat dissipation efficiency can be effectively enhanced, and the normal and safe operation of the control cabinet is ensured; the water storage slow release unit can be used for slowly releasing cooling water for the wind power diffusion unit, so that water vapor is added in the heat dissipation airflow, and the heat dissipation effect is effectively improved; the control box can be used for carrying out coordination control on the space heat dissipation mechanism, the wind power diffusion unit and the flow control unit, so that electric energy is effectively saved.
Description
Technical Field
The invention relates to a temperature control device, in particular to a temperature control device for a PLC control cabinet.
Background
At present, the existing PLC control cabinet has a single heat dissipation mode, external air is introduced for heat dissipation, and local positions cannot be subjected to heat dissipation; in addition, the existing heat dissipation mode is that the fan is started to dissipate heat after the PLC control cabinet is started, so that the waste of a power supply is caused, and the start and stop control cannot be carried out according to the internal temperature requirement. Therefore, it is necessary to design a temperature control device for a PLC control cabinet, which can perform start and stop control of heat dissipation according to the internal temperature of the PLC control cabinet, so as to ensure normal operation of the PLC control cabinet and save electric energy.
Disclosure of Invention
The purpose of the invention is as follows: the utility model provides a temperature control device for PLC switch board can carry out radiating opening according to the inside temperature of PLC switch board and stop the control to guarantee PLC switch board normal work, and can save the electric energy.
The technical scheme is as follows: the temperature control device for the PLC control cabinet comprises a control box, a space heat dissipation mechanism and a module heat dissipation mechanism; the module heat dissipation mechanism comprises a water storage slow release unit, a wind power diffusion unit, a flow control unit, a heat dissipation sticking block unit and an air outlet cover unit;
the space heat dissipation mechanism is respectively installed on the left side wall and the right side wall of the control cabinet in a penetrating manner, so that heat dissipation airflow from left to right or from right to left is formed in the inner space of the control cabinet, and the inner temperature of the control cabinet is detected in real time; the water storage slow release unit is used for being installed at the top of the control cabinet, is communicated with the wind power diffusion unit and is used for slowly releasing cooling water to the wind power diffusion unit; the flow control unit is connected in series between the water storage slow release unit and the wind power diffusion unit and is used for controlling the flow of the released cooling water; the air outlet cover unit is used for being installed on the side wall of the control cabinet in a penetrating mode, is communicated with the wind power diffusion unit and is used for discharging heat dissipation airflow of the wind power diffusion unit; the heat dissipation sticking block unit is used for being installed on a heating element of the control cabinet in a close manner, and is connected between the wind power diffusion unit and the air outlet cover unit in series; the control box is used for being installed on the front side face of the door plate of the control cabinet and performing coordination control on the space heat dissipation mechanism, the wind power diffusion unit and the flow control unit.
Further, the control box comprises a box body, a display screen and a loudspeaker; a controller, a memory and a wireless communication module are arranged in the box body; the display screen and the loudspeaker are both arranged on the front side surface of the box body; the controller is respectively electrically connected with the memory, the wireless communication module, the display screen and the loudspeaker; the space heat dissipation mechanism, the wind power diffusion unit and the flow control unit are coordinately controlled by the controller.
Further, the space heat dissipation mechanism comprises at least one temperature detection unit and at least two axial flow radiators; the two axial flow radiators are symmetrically arranged on the left side wall and the right side wall of the control cabinet; the temperature detection unit comprises a cabinet temperature sensor, a metal hose and a mounting strip-shaped plate; the temperature sensor in the cabinet is arranged on one end of the metal hose and is electrically connected with the controller; the mounting strip-shaped plate is mounted at the other end of the metal hose, and an adhesive layer for adhering to the inside of the control cabinet is arranged on the lower side surface of the mounting strip-shaped plate; the axial flow radiator comprises an axial flow fan and a filter screen plate; a flange mounting plate for fixedly mounting on the side wall of the control cabinet is arranged on the shell of the axial flow fan; a plug rectangular hole is formed in one side of the air outlet of the axial flow fan, a plug filter screen plate is inserted into the plug rectangular hole, and the plug filter screen plate covers the air outlet of the axial flow fan; a handle shifting sheet convenient for plugging and unplugging is arranged on the outer edge of the plugging filter screen plate; an auxiliary fan driving circuit electrically connected with the controller is arranged in the box body and electrically connected with the axial flow fan.
Further, the water storage slow release unit comprises a water storage tank, a primary buffer cotton layer and a release pipeline; the water storage tank is fixedly arranged at the top of the control cabinet, a water filling port is arranged at the top of the water storage tank, and a cap is arranged on the water filling port; a horizontal clapboard is horizontally arranged in the water storage tank and is used for dividing the interior of the water storage tank into an upper-layer water storage cavity and a lower-layer slow release cavity; the horizontal clapboard is at least provided with a slow release pore in a penetrating way and is used for communicating the upper layer water storage cavity with the lower layer slow release cavity; the upper end of the release pipeline is arranged at the bottom of the water storage tank and is communicated with the lower slow release cavity; the first-level buffer cotton layer is filled in the lower-layer slow-release cavity; the lower end of the release pipeline is used for being communicated with the wind power diffusion unit.
Further, the wind power diffusion unit comprises a disc-shaped diffusion shell, a centrifugal fan and a disc-shaped cotton layer; the disc-shaped diffusion shell is vertically and fixedly arranged in the control cabinet, and a disc-shaped cavity is arranged in the disc-shaped diffusion shell; each short air outlet pipe is arranged on the outer circumference of the disc-shaped diffusion shell at intervals and communicated with the disc-shaped cavity; the air outlet short pipe is communicated with the air outlet cover unit through an air outlet hose; a limiting convex ring is arranged on the rear side cavity wall of the disc-shaped cavity, and the disc-shaped cotton layer is arranged in the limiting convex ring; the lower end of the release pipeline extends into the disc-shaped diffusion shell and extends out of the disc-shaped cotton layer to convey cooling water for the disc-shaped cotton layer; the centrifugal fan is arranged on the front side surface of the disc-shaped diffusion shell, and a fan blade of the centrifugal fan is positioned in the disc-shaped cavity; an air filter screen is arranged at the air inlet of the centrifugal fan; a main fan driving circuit electrically connected with the controller is arranged in the box body, and the main fan driving circuit is electrically connected with the centrifugal fan.
Further, the air outlet cover unit comprises a conical cover, an air outlet installation pipe, a protective net and each air outlet short connecting pipe; a pipeline flange fixedly arranged on the side wall of the control cabinet is arranged on the air outlet mounting pipe; the conical cover is installed in butt joint with the inlet of the air outlet installation pipe, and the protective net covers the outlet of the air outlet installation pipe; the air outlet short connecting pipe is communicated with the conical cover and is communicated with the wind power diffusion unit through an air outlet hose.
Furthermore, the flow control unit comprises an adjusting seat, an adjusting driving motor, a driving screw, two rectangular sealing gaskets, a push-pull rectangular plate and a secondary buffer cotton layer; a side edge seat is integrally arranged on the side edge of the adjusting seat; a balance cavity and a flat cavity are arranged in the adjusting seat, and the flat cavity extends into the side seat; the secondary buffer cotton layer is filled in the balance cavity; all the adjusting communication holes are transversely arranged on the bottom cavity wall of the balance cavity at intervals; the balance cavity is positioned above the flat cavity, and the adjusting communication hole is vertically communicated with the balance cavity and the flat cavity; a liquid inlet and a liquid outlet are respectively arranged on the upper side surface and the lower side surface of the adjusting seat, and the liquid inlet and the liquid outlet are connected in series between the water storage slow release unit and the wind power diffusion unit through release pipelines; the liquid inlet is communicated with the balance cavity, and the liquid outlet is communicated with the flat cavity; the push-pull rectangular plate is positioned in the flat cavity, the two rectangular sealing gaskets are respectively fixed on the upper side surface and the lower side surface of the push-pull rectangular plate, and the two rectangular sealing gaskets are respectively attached to the upper side wall and the lower side wall of the flat cavity; a driving threaded hole is horizontally formed in the push-pull rectangular plate, one end of a driving screw rod is screwed on the driving threaded hole, the other end of the driving screw rod penetrates through the side edge seat to extend out, and the driving screw rod is sealed in a rotating mode at the penetrating position; the adjusting drive motor is arranged on the side seat, and an output shaft is butted with the extending end of the drive screw rod; a diversion trench communicated with the liquid outlet is arranged on the lower side cavity wall of the flat cavity; and an adjusting drive circuit electrically connected with the controller is arranged in the box body and is electrically connected with the adjusting drive motor.
Further, the heat dissipation sticking block unit comprises a strip-shaped shell, a module temperature sensor and four elastic pressing units; a strip-shaped heat dissipation cavity is arranged in the strip-shaped shell, and both ends of the strip-shaped shell are provided with serial interfaces; the two serial interfaces are connected in series between the wind power diffusion unit and the air outlet cover unit through the air outlet hose; a plurality of flow guide barrier strips are arranged in the strip-shaped heat dissipation cavity and are used for dividing the strip-shaped heat dissipation cavity into a plurality of strip-shaped heat dissipation channels, and the strip-shaped heat dissipation channels are communicated between the two serial interfaces; radiating convex strips are arranged on the cavity wall of the strip-shaped radiating cavity and positioned in each strip-shaped radiating channel; a sensor mounting pipe penetrates through the middle part of the strip-shaped shell, and the module temperature sensor is mounted in the sensor mounting pipe; the four elastic pressing units are arranged on the side edge of the strip-shaped shell and used for tightly mounting the strip-shaped shell on a heating element of the control cabinet; the controller is electrically connected with the module temperature sensor.
Furthermore, the elastic pressing unit comprises a mounting bolt, a pressing spring and a side fixing seat; the side fixing seat is fixedly arranged on the side of the strip-shaped shell, and a bolt through hole is formed in the side fixing seat; the end of the screw rod of the mounting bolt sequentially penetrates through the pressing spring and the bolt through hole.
Further, a heat-conducting silica gel filling groove is formed in the side face of the strip-shaped shell; and bent diversion strips pointing to the corresponding side serial interfaces are arranged at the two ends of each diversion barrier strip.
Compared with the prior art, the invention has the beneficial effects that: the space heat dissipation mechanism and the module heat dissipation mechanism can provide two heat dissipation modes for the control cabinet, one mode is to dissipate heat in the internal space, and the other mode is to dissipate heat at a fixed point in a heating element, so that the heat dissipation efficiency can be effectively enhanced, and the normal and safe operation of the control cabinet can be ensured; the water storage slow release unit can be used for slowly releasing cooling water for the wind power diffusion unit, so that water vapor is added in the heat dissipation airflow, and the heat dissipation effect is effectively improved; the control box can be used for carrying out coordination control on the space heat dissipation mechanism, the wind power diffusion unit and the flow control unit, so that electric energy is effectively saved.
Drawings
FIG. 1 is a schematic view of the mounting structure of the present invention;
FIG. 2 is a schematic view of a partial structure of the module heat dissipation mechanism of the present invention;
FIG. 3 is a schematic view of a combined installation structure of the water storage slow release unit, the wind power diffusion unit and the flow control unit;
FIG. 4 is a schematic structural diagram of an air outlet cover unit according to the present invention;
FIG. 5 is a schematic view of an axial flow heat sink according to the present invention;
FIG. 6 is a schematic structural diagram of a temperature detecting unit according to the present invention;
FIG. 7 is a schematic structural diagram of a control box according to the present invention;
FIG. 8 is a schematic view of a heat sink block unit structure according to the present invention;
FIG. 9 is a schematic cross-sectional view of a heat sink block unit according to the present invention;
FIG. 10 is a schematic longitudinal sectional view of a heat sink block unit according to the present invention;
fig. 11 is a schematic circuit diagram of the present invention.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.
Example 1:
as shown in fig. 1 to 11, the temperature control device for a PLC control cabinet disclosed in the present invention includes: the control box 1, the space heat dissipation mechanism 4 and the module heat dissipation mechanism; the module heat dissipation mechanism comprises a water storage slow release unit 2, a wind power diffusion unit 6, a flow control unit 7, a heat dissipation sticking block unit 5 and an air outlet cover unit 3;
the space heat dissipation mechanism 4 is respectively installed on the left side wall and the right side wall of the control cabinet 8 in a penetrating manner, so that heat dissipation airflow from left to right or from right to left is formed in the inner space of the control cabinet 8, and the inner temperature of the control cabinet 8 is detected in real time; the water storage slow release unit 2 is used for being installed at the top of the control cabinet 8, is communicated with the wind power diffusion unit 6 and is used for slowly releasing cooling water to the wind power diffusion unit 6; the flow control unit 7 is connected in series between the water storage slow release unit 2 and the wind power diffusion unit 6 and is used for controlling the flow of the released cooling water; the air outlet cover unit 3 is used for being mounted on the side wall of the control cabinet 8 in a penetrating manner, is communicated with the wind power diffusion unit 6 and is used for discharging heat dissipation airflow of the wind power diffusion unit 6; the heat dissipation sticking block unit 5 is used for being installed on a heating element of the control cabinet 8 in a close manner, and the heat dissipation sticking block unit 5 is connected between the wind power diffusion unit 6 and the air outlet cover unit 3 in series; the control box 1 is used for being installed on the front side surface of a door panel of a control cabinet 8 and performing coordinated control on the space heat dissipation mechanism 4, the wind power diffusion unit 6 and the flow control unit 7.
The space heat dissipation mechanism 4 and the module heat dissipation mechanism can provide two heat dissipation modes for the control cabinet 8, one mode is to dissipate heat in the internal space, and the other mode is to dissipate heat at a fixed point in a heating element, so that the heat dissipation efficiency can be effectively enhanced, and the normal and safe operation of the control cabinet 8 is ensured; the water storage slow release unit 2 can be used for slowly releasing cooling water for the wind power diffusion unit 6, so that water vapor is added in the heat dissipation airflow, and the heat dissipation effect is effectively improved; the control box 1 can be used for performing coordinated control on the space heat dissipation mechanism 4, the wind power diffusion unit 6 and the flow control unit 7, so that electric energy is effectively saved.
Further, the control box 1 comprises a box body 101, a display screen 102 and a loudspeaker 103; a controller, a memory and a wireless communication module are arranged in the box body 101; the display screen 102 and the speaker 103 are both mounted on the front side of the case 101; the controller is respectively electrically connected with the memory, the wireless communication module, the display screen 102 and the loudspeaker 103; the space heat dissipation mechanism 4, the wind power diffusion unit 6 and the flow control unit 7 are coordinately controlled by a controller. Real-time temperature can be displayed using the display screen 102; a voice alarm can be performed by using the loudspeaker 103; the wireless communication module can be used for realizing remote sending of alarm information.
Further, the space heat dissipation mechanism 4 comprises at least one temperature detection unit and at least two axial flow radiators; the two axial flow radiators are symmetrically arranged on the left side wall and the right side wall of the control cabinet 8; the temperature detection unit comprises a cabinet internal temperature sensor 406, a metal hose 407 and a mounting strip-shaped plate 408; the cabinet temperature sensor 406 is arranged at one end of the metal hose 407, and the cabinet temperature sensor 406 is electrically connected with the controller; the mounting strip-shaped plate 408 is mounted at the other end of the metal hose 407, and an adhesive layer 409 for adhering to the inside of the control cabinet 8 is arranged on the lower side surface of the mounting strip-shaped plate 408; the axial flow radiator comprises an axial flow fan 401 and a plug filter screen plate 403; a flange mounting plate 405 for fixedly mounting on the side wall of the control cabinet 8 is arranged on the shell of the axial flow fan 401; a plug rectangular hole 402 is formed in one side of an air outlet of the axial flow fan 401, a plug filter screen plate 403 is plugged in the plug rectangular hole 402, and the plug filter screen plate 403 covers the air outlet of the axial flow fan 401; a handle shifting piece 404 convenient for plugging and unplugging is arranged on the outer edge of the plugging filter screen plate 403; an auxiliary fan driving circuit electrically connected to the controller is provided in the box body 101, and the auxiliary fan driving circuit is electrically connected to the axial flow fan 401. The temperature of the cavity inside the control cabinet 8 can be monitored in real time by using the cabinet internal temperature sensor 406, so that the axial flow fan 401 is started in time to perform quick heat dissipation; by the arrangement of the mounting strip-shaped plate 408 and the adhesive layer 409, the control cabinet 8 can be conveniently and quickly attached and mounted; the metal hose 407 can be used for conveniently adjusting the angular position of the temperature sensor 406 in the cabinet; the air outlet of the axial flow fan 401 can be filtered and protected by the aid of the plugging filter screen plate 403, dust is reduced to enter the control cabinet 8, and the plugging filter screen plate 403 can be cleaned conveniently by plug-in mounting.
Further, the water storage slow release unit 2 comprises a water storage tank 201, a primary buffer cotton layer 205 and a release pipeline 208; the water storage tank 201 is fixedly arranged at the top of the control cabinet 8, a water filling port 206 is arranged at the top of the water storage tank 201, and a cover cap 207 is arranged on the water filling port 206; a horizontal clapboard 203 is horizontally arranged in the water storage tank 201 and is used for dividing the interior of the water storage tank 201 into an upper-layer water storage cavity 202 and a lower-layer slow-release cavity 205; the horizontal partition plate 203 is at least provided with a slow release pore 204 in a penetrating way, and the slow release pore is used for communicating the upper-layer water storage cavity 202 with the lower-layer slow release cavity 205; the upper end of the release pipeline 208 is arranged at the bottom of the water storage tank 201 and is communicated with the lower slow release cavity 205; the first-level buffer cotton layer 205 is filled in the lower-layer slow-release cavity 205; the lower end of the discharge duct 208 is used for communication with the wind power diffusing unit 6. The slow-release pore 204 and the first-level buffer cotton layer 205 are matched, so that the release speed of the cooling water can be reduced, and the cooling water is prevented from being released too fast.
Further, the wind power diffusing unit 6 comprises a disc-shaped diffusing shell 601, a centrifugal fan 607 and a disc-shaped cotton layer 606; the disc-shaped diffusion shell 601 is vertically and fixedly arranged in the control cabinet 8, and a disc-shaped cavity 602 is arranged in the disc-shaped diffusion shell 601; each air outlet short pipe 604 is arranged on the outer circumference of the disc-shaped diffusion shell 601 at intervals, and the air outlet short pipes 604 are communicated with the disc-shaped cavity 602; the air outlet short pipe 604 is communicated with the air outlet cover unit 3 through an air outlet hose 9; a limiting convex ring 603 is arranged on the rear side cavity wall of the disc-shaped cavity 602, and a disc-shaped cotton layer 606 is arranged in the limiting convex ring 603; the lower end of the release pipeline 208 extends into the disc-shaped diffusion shell 601 and extends out of the disc-shaped cotton layer 606 to convey cooling water for the disc-shaped cotton layer 606; the centrifugal fan 607 is installed on the front side surface of the disc-shaped diffusion shell 601, and the fan blades of the centrifugal fan 607 are located in the disc-shaped cavity 602; an air filter 608 is arranged at an air inlet of the centrifugal fan 607; a main fan driving circuit electrically connected to the controller is provided in the box 101, and the main fan driving circuit is electrically connected to the centrifugal fan 607. The disc-shaped cotton layer 606 can absorb cooling water, and moisture diffusion is realized under the action of the centrifugal fan 607, so that the heat dissipation effect is enhanced; the limiting convex ring 603 can limit the disc-shaped cotton layer 606 and can also lock water at the edge to avoid leakage; the intake air can be filtered using an air screen 608.
Further, the air outlet cover unit 3 comprises a conical cover 302, an air outlet installation pipe 301, a protective net 306 and each air outlet short connecting pipe 304; the air outlet mounting pipe 301 is provided with a pipeline flange 303 which is fixedly mounted on the side wall of the control cabinet 8; the conical cover 302 is installed in butt joint with the inlet of the air outlet installation pipe 301, and the protective net 306 covers the outlet of the air outlet installation pipe 301; the air outlet short connecting pipe 304 is communicated with the conical cover 302 and is communicated with the wind power diffusion unit 6 through the air outlet hose 9. Foreign matter can be prevented from entering by using the protective net 306; by means of the arrangement of the multiple air outlet short connecting pipes 304, the multiple air outlet hoses 9 can be connected conveniently.
Further, the flow control unit 7 comprises an adjusting seat 701, an adjusting drive motor 711, a drive screw 710, two rectangular sealing gaskets 707, a push-pull rectangular plate 706 and a secondary buffer cotton layer 705; a side seat 703 is integrally arranged on the side edge of the adjusting seat 701; an equalizing cavity 702 and a flat cavity 704 are arranged in the adjusting seat 701, and the flat cavity 704 extends into the side seat 703; the secondary buffer cotton layer 705 is filled in the equalizing cavity 702; all the adjusting communication holes 709 are transversely arranged on the bottom cavity wall of the balance cavity 702 at intervals; the equalizing cavity 702 is positioned above the flat cavity 704, and the adjusting communication hole 709 vertically communicates the equalizing cavity 702 with the flat cavity 704; a liquid inlet and a liquid outlet are respectively arranged on the upper side surface and the lower side surface of the adjusting seat 701, and the liquid inlet and the liquid outlet are connected in series between the water storage slow release unit 2 and the wind power diffusion unit 6 through a release pipeline 208; an inlet port communicates with the equalizing cavity 702 and an outlet port communicates with the flat cavity 704; the push-pull rectangular plate 706 is positioned in the flat cavity 704, the two rectangular sealing gaskets 707 are respectively fixed on the upper and lower side surfaces of the push-pull rectangular plate 706, and the two rectangular sealing gaskets 707 are respectively attached to the upper and lower side cavity walls of the flat cavity 704; a driving threaded hole is horizontally formed in the push-pull rectangular plate 706, one end of a driving screw rod 710 is screwed on the driving threaded hole, and the other end of the driving screw rod 710 penetrates through the side base 703 to extend out and is sealed in a rotating mode at the penetrating position; the adjusting driving motor 711 is installed on the side seat 703, and the output shaft is butted with the extending end of the driving screw 710; a diversion trench 708 communicated with the liquid outlet is arranged on the lower side cavity wall of the flat cavity 704; an adjustment driving circuit electrically connected to the controller is provided in the case 101, and the adjustment driving circuit is electrically connected to the adjustment driving motor 711. The two rectangular gaskets 707 can realize elastic support, thereby ensuring the sealing reliability of the regulating communication hole 709; the position of the rectangular sealing gasket 707 can be stably adjusted by the cooperation of the push-pull rectangular plate 706, the driving screw 710 and the adjusting driving motor 711, so that the flow rate is effectively controlled; the cooling water can be smoothly gathered into the liquid outlet by using the diversion trench 708; the secondary buffer cotton layer 705 can further buffer the water pressure, and the stability and uniformity of cooling water release are ensured.
Further, the heat dissipation patch unit 5 includes a bar-shaped housing 501, a module temperature sensor 505, and four elastic pressing units; a strip-shaped heat dissipation cavity is arranged inside the strip-shaped shell 501, and both ends of the strip-shaped shell 501 are provided with serial interfaces 502; the two serial interfaces 502 are connected in series between the wind power diffusion unit 6 and the wind outlet cover unit 3 through the wind outlet hose 9; a plurality of flow guide barrier strips 507 are arranged in the strip-shaped heat dissipation cavity and used for dividing the strip-shaped heat dissipation cavity into a plurality of strip-shaped heat dissipation channels, and the strip-shaped heat dissipation channels are communicated between the two serial interfaces 502; heat dissipation convex strips 508 are arranged on the cavity wall of the strip-shaped heat dissipation cavity and in each strip-shaped heat dissipation channel; a sensor mounting pipe 506 penetrates through the middle part of the strip-shaped shell 501, and the module temperature sensor 505 is mounted in the sensor mounting pipe 506; the four elastic pressing units are arranged on the side edge of the strip-shaped shell 501 and used for tightly mounting the strip-shaped shell 501 on a heating element of the control cabinet 8; the controller is electrically connected to the module temperature sensor 505. The plurality of strip-shaped heat dissipation channels can achieve the effect of uniform heat dissipation; the heat dissipation effect can be further enhanced by using the heat dissipation convex strips 508; utilize to set up bar heat dissipation channel in the bar casing 501 to realize inclosed radiating loop, can not reveal warm and humid air current in to switch board 8, ensure the inside security of switch board 8.
Further, the elastic pressing unit includes a mounting bolt 504, a pressing spring 511 and a side fixing seat 503; the side fixing seat 503 is fixedly installed on the side of the bar-shaped shell 501, and a bolt through hole is formed in the side fixing seat 503; the screw end of the mounting bolt 504 passes through the pressing spring 511 and the bolt through hole in this order. The pressing spring 511 can exert an elastic pressing effect to ensure that the strip-shaped housing 501 is tightly attached to the heating element.
Further, a heat-conducting silica gel filling groove 510 is arranged on the side surface of the bar-shaped shell 501; and bent flow guide strips 509 pointing to the serial interfaces 502 on the corresponding sides are arranged at two ends of each flow guide barrier strip 507. The heat-conducting silica gel can be conveniently smeared by utilizing the heat-conducting silica gel filling groove 510, so that the heat-conducting silica gel is tightly attached to the heating element, and the heat conduction effect is ensured; the bent guide strips 509 can enable airflow to be uniformly dispersed into each strip-shaped heat dissipation channel for heat dissipation.
The invention discloses a temperature control device for a PLC control cabinet, which comprises: the controller adopts the existing single chip microcomputer control module and is used for carrying out coordination control; the main fan driving circuit, the auxiliary fan driving circuit and the adjusting driving circuit all adopt the existing motor driving circuits and are used for respectively driving the centrifugal fan 607, the axial flow fan 401 and the adjusting driving motor 711; the module temperature sensor 505 and the cabinet temperature sensor 406 both adopt the existing digital temperature sensors; the wireless communication module adopts an existing WiFi module or a 4G communication module.
When the temperature control device for the PLC control cabinet is used, when the controller judges that the acquired temperature of the module temperature sensor 505 exceeds a set module temperature threshold value, the controller drives the centrifugal fan 607 to work through the main fan driving circuit, and controls the centrifugal fan 607 and the adjusting driving motor 711 according to the temperature value acquired by the module temperature sensor 505, for example, when the temperature is between 50 ℃ and 60 ℃, the main fan driving circuit drives the centrifugal fan 607 to work at a low-speed gear, and the adjusting driving motor 711 is controlled through the adjusting driving circuit, so that only one adjusting communication hole 709 is opened; when the temperature is between 90 ℃ and 100 ℃, the centrifugal fan 607 is driven to work at a high speed gear by the main fan driving circuit, and the adjusting driving motor 711 is controlled by the adjusting driving circuit, so that the four adjusting communicating holes 709 are opened.
When the controller judges that the acquired temperature of the cabinet temperature sensor 406 exceeds a set cabinet temperature threshold value, the controller drives the axial fans 401 to work through the auxiliary fan driving circuit, and simultaneously controls the number of the started axial fans 401 according to the temperature value of the cabinet temperature sensor 406, for example, when the temperature is between 90 ℃ and 100 ℃, all the axial fans 401 are driven to work through the auxiliary fan driving circuit; if the temperature is between 50 ℃ and 60 ℃, the two opposite axial fans 401 are driven to operate by the sub-fan driving circuit.
In the working process of the control box 1, the controller controls the display screen 102 to display the temperature values acquired by the cabinet temperature sensor 406 and the module temperature sensor 505 in real time, and starts the loudspeaker 103 to send an alarm sound when the cabinet temperature sensor 406 exceeds 80 ℃ or the module temperature sensor 505 exceeds 90 ℃, and meanwhile, sends alarm information to a remote monitoring center or a mobile phone terminal of an administrator through the wireless communication module.
As noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a temperature control device for PLC switch board which characterized in that: comprises a control box (1), a space heat dissipation mechanism (4) and a module heat dissipation mechanism; the module heat dissipation mechanism comprises a water storage slow release unit (2), a wind power diffusion unit (6), a flow control unit (7), a heat dissipation sticking block unit (5) and an air outlet cover unit (3);
the space heat dissipation mechanism (4) is respectively installed on the left side wall and the right side wall of the control cabinet (8) in a penetrating mode, so that heat dissipation airflow from left to right or from right to left is formed in the inner space of the control cabinet (8), and the inner temperature of the control cabinet (8) is detected in real time; the water storage slow release unit (2) is used for being installed at the top of the control cabinet (8), is communicated with the wind power diffusion unit (6) and is used for slowly releasing cooling water to the wind power diffusion unit (6); the flow control unit (7) is connected in series between the water storage slow release unit (2) and the wind power diffusion unit (6) and is used for controlling the flow of the released cooling water; the air outlet cover unit (3) is used for being mounted on the side wall of the control cabinet (8) in a penetrating mode, is communicated with the wind power diffusion unit (6) and is used for discharging heat dissipation airflow of the wind power diffusion unit (6); the heat dissipation sticking block unit (5) is used for being installed on a heating element of the control cabinet (8) in a close manner, and the heat dissipation sticking block unit (5) is connected between the wind power diffusion unit (6) and the air outlet cover unit (3) in series; the control box (1) is used for being installed on the front side face of a door panel of the control cabinet (8) and performing coordinated control on the space heat dissipation mechanism (4), the wind power diffusion unit (6) and the flow control unit (7).
2. The temperature control device for the PLC control cabinet according to claim 1, wherein: the control box (1) comprises a box body (101), a display screen (102) and a loudspeaker (103); a controller, a memory and a wireless communication module are arranged in the box body (101); the display screen (102) and the loudspeaker (103) are both arranged on the front side surface of the box body (101); the controller is respectively and electrically connected with the memory, the wireless communication module, the display screen (102) and the loudspeaker (103); the space heat dissipation mechanism (4), the wind power diffusion unit (6) and the flow control unit (7) are coordinately controlled by a controller.
3. The temperature control device for the PLC control cabinet according to claim 2, wherein: the space heat dissipation mechanism (4) comprises at least one temperature detection unit and at least two axial flow radiators; the two axial flow radiators are symmetrically arranged on the left side wall and the right side wall of the control cabinet (8); the temperature detection unit comprises a cabinet temperature sensor (406), a metal hose (407) and a mounting strip-shaped plate (408); the cabinet internal temperature sensor (406) is arranged at one end of the metal hose (407), and the cabinet internal temperature sensor (406) is electrically connected with the controller; the mounting strip-shaped plate (408) is mounted at the other end of the metal hose (407), and an adhesive layer (409) for adhering to the inside of the control cabinet (8) is arranged on the lower side surface of the mounting strip-shaped plate (408); the axial flow radiator comprises an axial flow fan (401) and a plug filter screen plate (403); a flange mounting plate (405) fixedly mounted on the side wall of the control cabinet (8) is arranged on the shell of the axial flow fan (401); a plug rectangular hole (402) is formed in one side of an air outlet of the axial flow fan (401), a plug filter screen plate (403) is plugged in the plug rectangular hole (402), and the plug filter screen plate (403) covers the air outlet of the axial flow fan (401); a handle plectrum (404) convenient for plugging and unplugging is arranged on the outer edge of the plugging filter screen plate (403); an auxiliary fan driving circuit electrically connected with the controller is arranged in the box body (101), and the auxiliary fan driving circuit is electrically connected with the axial flow fan (401).
4. The temperature control device for the PLC control cabinet according to claim 2, wherein: the water storage slow release unit (2) comprises a water storage tank (201), a primary buffer cotton layer (205) and a release pipeline (208); the water storage tank (201) is fixedly arranged at the top of the control cabinet (8), a water filling port (206) is arranged at the top of the water storage tank (201), and a cap (207) is arranged on the water filling port (206); a horizontal clapboard (203) is horizontally arranged in the water storage tank (201) and is used for dividing the interior of the water storage tank (201) into an upper-layer water storage cavity (202) and a lower-layer slow-release cavity (205); the horizontal partition plate (203) is at least provided with a slow release pore (204) in a penetrating way, and the slow release pore is used for communicating the upper-layer water storage cavity (202) with the lower-layer slow release cavity (205); the upper end of the release pipeline (208) is arranged at the bottom of the water storage tank (201) and is communicated with the lower slow release cavity (205); the primary buffer cotton layer (205) is filled in the lower slow release cavity (205); the lower end of the release pipe (208) is used for communicating with the wind power diffusion unit (6).
5. The temperature control device for the PLC control cabinet according to claim 4, wherein: the wind power diffusion unit (6) comprises a disc-shaped diffusion shell (601), a centrifugal fan (607) and a disc-shaped cotton layer (606); the disc-shaped diffusion shell (601) is vertically and fixedly arranged in the control cabinet (8), and a disc-shaped cavity (602) is arranged in the disc-shaped diffusion shell (601); each air outlet short pipe (604) is arranged on the outer circumference of the disc-shaped diffusion shell (601) at intervals, and the air outlet short pipes (604) are communicated with the disc-shaped cavity (602); the air outlet short pipe (604) is communicated with the air outlet cover unit (3) through an air outlet hose (9); a limiting convex ring (603) is arranged on the rear side cavity wall of the disc-shaped cavity (602), and the disc-shaped cotton layer (606) is arranged in the limiting convex ring (603); the lower end of the release pipeline (208) extends into the disc-shaped diffusion shell (601) and extends out of the disc-shaped cotton layer (606) and is used for conveying cooling water to the disc-shaped cotton layer (606); the centrifugal fan (607) is arranged on the front side surface of the disc-shaped diffusion shell (601), and fan blades of the centrifugal fan (607) are positioned in the disc-shaped cavity (602); an air filter screen (608) is arranged at an air inlet of the centrifugal fan (607); a main fan driving circuit electrically connected with the controller is arranged in the box body (101), and the main fan driving circuit is electrically connected with the centrifugal fan (607).
6. The temperature control device for the PLC control cabinet according to claim 1, wherein: the air outlet cover unit (3) comprises a conical cover (302), an air outlet installation pipe (301), a protective net (306) and air outlet short connecting pipes (304); a pipeline flange (303) fixedly arranged on the side wall of the control cabinet (8) is arranged on the air outlet mounting pipe (301); the conical cover (302) is installed in butt joint with the inlet of the air outlet installation pipe (301), and the protective net (306) covers the outlet of the air outlet installation pipe (301); the air outlet short connecting pipe (304) is communicated with the conical cover (302) and is communicated with the wind power diffusion unit (6) through an air outlet hose (9).
7. The temperature control device for the PLC control cabinet according to claim 2, wherein: the flow control unit (7) comprises an adjusting seat (701), an adjusting driving motor (711), a driving screw (710), two rectangular sealing gaskets (707), a push-pull rectangular plate (706) and a secondary buffer cotton layer (705); a side edge seat (703) is integrally arranged on the side edge of the adjusting seat (701); a balance cavity (702) and a flat cavity (704) are arranged in the adjusting seat (701), and the flat cavity (704) extends into the side seat (703); the secondary buffer cotton layer (705) is filled in the equalizing cavity (702); the bottom cavity wall of the balance cavity (702) is transversely provided with all the adjusting communication holes (709) at intervals; the equalizing cavity (702) is positioned above the flat cavity (704), and the adjusting communication hole (709) vertically communicates the equalizing cavity (702) and the flat cavity (704); a liquid inlet and a liquid outlet are respectively arranged on the upper side surface and the lower side surface of the adjusting seat (701), and the liquid inlet and the liquid outlet are connected in series between the water storage slow release unit (2) and the wind power diffusion unit (6) through a release pipeline (208); the liquid inlet is communicated with the equalizing cavity (702), and the liquid outlet is communicated with the flat cavity (704); the push-pull rectangular plate (706) is positioned in the flat cavity (704), the two rectangular sealing gaskets (707) are respectively fixed on the upper side and the lower side of the push-pull rectangular plate (706), and the two rectangular sealing gaskets (707) are respectively attached to the upper side cavity wall and the lower side cavity wall of the flat cavity (704); a driving threaded hole is horizontally formed in the push-pull rectangular plate (706), one end of a driving screw rod (710) is screwed on the driving threaded hole, and the other end of the driving screw rod (710) penetrates through the side edge seat (703) to extend out and is sealed in a rotating mode at the penetrating position; the adjusting drive motor (711) is arranged on the side seat (703), and an output shaft is butted with the extending end of the drive screw rod (710); a diversion trench (708) communicated with the liquid outlet is arranged on the lower side cavity wall of the flat cavity (704); an adjusting drive circuit electrically connected with the controller is arranged in the box body (101), and the adjusting drive circuit is electrically connected with the adjusting drive motor (711).
8. The temperature control device for the PLC control cabinet according to claim 2, wherein: the heat dissipation sticking block unit (5) comprises a strip-shaped shell (501), a module temperature sensor (505) and four elastic pressing units; a strip-shaped heat dissipation cavity is arranged in the strip-shaped shell (501), and both ends of the strip-shaped shell (501) are provided with serial interfaces (502); the two serial interfaces (502) are connected in series between the wind power diffusion unit (6) and the air outlet cover unit (3) through an air outlet hose (9); a plurality of flow guide baffle strips (507) are arranged in the strip-shaped heat dissipation cavity and are used for dividing the strip-shaped heat dissipation cavity into a plurality of strip-shaped heat dissipation channels, and the strip-shaped heat dissipation channels are communicated between the two serial interfaces (502); heat dissipation convex strips (508) are arranged on the cavity wall of the strip-shaped heat dissipation cavity and in each strip-shaped heat dissipation channel; a sensor mounting pipe (506) penetrates through the middle part of the strip-shaped shell (501), and the module temperature sensor (505) is mounted in the sensor mounting pipe (506); the four elastic pressing units are arranged on the side edge of the strip-shaped shell (501) and used for tightly mounting the strip-shaped shell (501) on a heating element of the control cabinet (8); the controller is electrically connected to a module temperature sensor (505).
9. The temperature control device for the PLC control cabinet according to claim 8, wherein: the elastic pressing unit comprises a mounting bolt (504), a pressing spring (511) and a side fixing seat (503); the side fixing seat (503) is fixedly arranged on the side of the strip-shaped shell (501), and a bolt through hole is formed in the side fixing seat (503); the end of the screw of the mounting bolt (504) passes through the pressing spring (511) and the bolt through hole in this order.
10. The temperature control device for the PLC control cabinet according to claim 8, wherein: a heat-conducting silica gel filling groove (510) is formed in the side face of the strip-shaped shell (501); and bent flow guide strips (509) pointing to the serial interfaces (502) on the corresponding sides are arranged at the two ends of each flow guide barrier strip (507).
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| CN202110854461.5A CN113573556B (en) | 2021-07-28 | 2021-07-28 | Temperature control device for PLC control cabinet |
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| CN202110854461.5A CN113573556B (en) | 2021-07-28 | 2021-07-28 | Temperature control device for PLC control cabinet |
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| CN113573556B CN113573556B (en) | 2022-04-12 |
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| CN113573556B (en) | 2022-04-12 |
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