阅读说明：本技术 一种具有高安全性和防尘的变频器 (Frequency converter with high safety and dust prevention ) 是由 高立 高明清 于 2020-12-30 设计创作，主要内容包括：本发明涉及变频器装置技术领域,公开了一种具有高安全性和防尘的变频器,通过温度传感器等设置控制风冷系统与警示系统,同时,通过电容控制线主动切断大容量电容的供电,防止温度持续上升,烧毁变频器,通过电机及主动齿轮等设置,对大容量电容及整流单元与控制单元进行风冷散热,同时通过传动皮带轮与传动齿轮的设置,间接使得导气扇与散热扇反向转动,通过导气扇与散热扇互为反向转动的设置,从而加快了大容量电容及整流单元与控制单元表面的空气流通速度,继而实现了快速降温的目的,防止变频器内的温度持续上升,通过报警灯及警示传导线的设置,及时地介入人工控制,避免变频器持续高温遭受损毁。(The invention relates to the technical field of frequency converter devices, and discloses a frequency converter with high safety and dust prevention, wherein an air cooling system and a warning system are controlled by arranging a temperature sensor and the like, meanwhile, the power supply of a large-capacity capacitor is actively cut off by a capacitor control line to prevent the temperature from continuously rising, the frequency converter is burnt, the large-capacity capacitor, a rectifying unit and a control unit are cooled and radiated by air through arranging a motor, a driving gear and the like, meanwhile, an air guide fan and a heat radiation fan are indirectly reversely rotated through arranging a transmission belt pulley and a transmission gear, the air circulation speed of the large-capacity capacitor, the rectifying unit and the surface of the control unit is accelerated through arranging the air guide fan and the heat radiation fan in reverse rotation, the aim of quickly cooling is fulfilled, the temperature in the frequency converter is prevented from continuously rising, and manual control is timely intervened through arranging an alarm lamp and a conduction warning line, the continuous high temperature of the frequency converter is prevented from being damaged.)

1. A frequency converter with high safety and dust prevention comprises a shell (1), and is characterized in that: the heat dissipation device is characterized in that the inner walls of two sides of the shell (1) are fixedly connected with the same heat dissipation bottom plate (2), the heat dissipation bottom plate (2) is fixedly connected with a large-capacity capacitor (3), a rectifying unit (4) and a control unit (5), the inner wall of the bottom side of the shell (1) is fixedly connected with a base (6), the base (6) is fixedly connected with a motor (7), one end of the motor (7) is fixedly connected with an input shaft (8) through an internal coupler of the motor, one end of the input shaft (8) is fixedly connected with a driving gear (9), the inner walls of two sides of the shell (1) are respectively provided with a rectangular groove (10), the inner wall of one side of the two rectangular grooves (10) is respectively provided with a main shaft groove, the two main shaft grooves are corresponding in position, the same driving shaft (11) is rotatably sleeved in the two main shaft grooves, and the driving, the driving shaft (11) is fixedly sleeved with a driven gear (12), the driven gear (12) is meshed with the driving gear (9), the driving shaft (11) is fixedly sleeved with a first driving belt pulley (13), the first driving belt pulley (13) and the driven gear (12) are both positioned at the same end of the driving shaft (11), one of the two side inner walls, close to each other, of the rectangular grooves (10) is fixedly connected with two same connecting plates (14), the other two side inner walls, close to each other, of the rectangular grooves (10) are fixedly connected with the same connecting plate (14), the driving shaft (11) is fixedly sleeved with a second driving belt pulley (15), the bottom side inner wall of the shell (1) is fixedly connected with a central processing unit (32), and the temperature sensor (31) is fixedly connected with a temperature conducting line (33), the other end fixed connection of temperature conducting wire (33) is in on central processing unit (32), be equipped with the drive signal ware on motor (7), fixedly connected with drive conducting wire (34) on the drive signal ware, the other end fixed connection of drive conducting wire (34) is in on central processing unit (32).

2. A frequency converter with high safety and dust prevention according to claim 1, characterized in that: one of them first shaft hole has been seted up to one side of connecting plate (14), with one side seted up first rotation groove on the one side inner wall of rectangular channel (10), first rotation groove reaches first shaft downthehole equal fixed first bearing that has cup jointed, two first driven shaft (16) have all been cup jointed to the internal equal fixed of first bearing, the both ends of first driven shaft (16) run through two respectively and correspond first bearing, the both ends of first driven shaft (16) extend to respectively outside one side in first rotation inslot and first shaft hole, fixed cover has been connect from the power driven pulley (17) on first driven shaft (16), from the power driven pulley (17) with the tensioning has same first drive belt (18) on second drive pulley (15), the one end fixedly connected with heat dissipation fan (19) of first driven shaft (16).

3. A frequency converter with high safety and dust prevention according to claim 1 or 2, characterized in that: one of them the second shaft hole has been seted up to one side of connecting plate (14), with one side seted up the second on the inner wall of one side of rectangular channel (10) and rotated the groove, the second shaft hole with the second rotates the inslot and all fixedly cup jointed the second bearing, two transmission shaft (20) have all been connected to the second bearing internal fixation, two correspondences are run through respectively at the both ends of transmission shaft (20) the second bearing, the both ends of transmission shaft (20) extend to respectively outside one side of second drive inslot and second shaft hole, the fixed driving pulley (21) that has cup jointed on transmission shaft (20), driving pulley (21) with the tensioning has same second driving belt (22) on first driving pulley (13), the one end fixedly connected with drive gear (23) of transmission shaft (20).

4. A frequency converter with high safety and dust prevention according to any one of claims 1 to 3, characterized in that: one of them the connecting plate (14) one side seted up the third and changeed the hole, with one side seted up the third on the inner wall of one side of rectangular channel (10) and rotated the groove, the third rotate the groove with the third changes downthehole third bearing that all fixedly cup jointed, two same second driven shaft (24) has all fixedly cup jointed in the third bearing, the both ends of second driven shaft (24) run through two respectively the third bearing, the both ends of second driven shaft (24) extend to respectively the third rotates the inslot and outside the one side in third commentaries on classics hole, the one end fixedly connected with reversing gear (25) of second driven shaft (24), reversing gear (25) with drive gear (23) mesh mutually.

5. A frequency converter with high safety and dust prevention according to any one of claims 1 to 4, characterized in that: fixed cover is connected with air guide fan (26) on second driven shaft (24), inlet port (27) and venthole (28) have been seted up respectively to the both sides of casing (1), inlet port (27) reach the position of venthole (28) respectively with heat dissipation fan (19) with air guide fan (26) position is corresponding, the top fixedly connected with signal post of casing (1), fixedly connected with alarm lamp (29) on the signal post, one side fixedly connected with heat-conducting plate (30) of radiating bottom plate (2), a plurality of even temperature sensor (31) of distribution of fixedly connected with on heat-conducting plate (30).

6. The frequency converter with high safety and dust prevention according to claim 5, wherein: fixedly connected with warning conducting wire (35) in alarm lamp (29), the other end of warning conducting wire (35) runs through signal post and fixed connection are in on central processing unit (32), fixedly connected with electric capacity control line (36) on large capacity electric capacity (3), the other end of electric capacity control line (36) is fixed in central processing unit (32), central processing unit (32) with alarm lamp (29) motor (7) with temperature sensor (31) reach electric connection between large capacity electric capacity (3).

7. The frequency converter with high safety and dust prevention according to claim 6, wherein: a plurality of even rectangular holes (37) of distribution have been seted up to one side of casing (1), rectangle spout (38) are even with a plurality of distribution rectangular holes (37) are linked together, two extrusion springs (39) of fixedly connected with on one side inner wall of rectangle spout (38), be equipped with filter (40) in rectangle spout (38), filter (40) with rectangle spout (38) looks adaptation, one side and two of filter (40) extrusion spring (39) contact, a plurality of even filtration holes (41) of distribution have been seted up to one side of filter (40).

8. A frequency converter with high safety and dust-proof according to claim 7, characterized in that: elastic hemispheres (42) are fixedly connected to the top and the bottom of the filter plate (40) and the inner walls of the bottom side and the top side of the rectangular sliding groove (38), the sum of the diameters of the two elastic hemispheres (42) in the same relative position in a natural state is larger than the distance between the top side of the filter plate (40) and the inner wall of the top side of the rectangular sliding groove (38), and the sum of the diameters of the two elastic hemispheres (42) in the same relative position under the maximum deformation is smaller than the distance between the top side of the filter plate (40) and the inner wall of the top side of the rectangular sliding groove (38). One side of the filter plate (40) is fixedly connected with a handle (43).

Technical Field

The invention relates to the technical field of frequency converter devices, in particular to a frequency converter with high safety and dust prevention.

Background

The frequency converter is an electric control device which applies the frequency conversion technology and the microelectronic technology and controls an alternating current motor by changing the working power supply frequency mode of the motor, and mainly comprises a rectifying unit, a filtering unit, an inverting unit, a braking unit, a driving unit, a detection unit microprocessing unit and the like, the frequency converter has a plurality of protection functions such as overcurrent, overvoltage, overload protection and the like, an incoming line terminal, a rectifier bridge, an energy storage capacitor, a pre-charging loop, an inverter, a current transformer and an outgoing line terminal are necessary components of the frequency converter, and then the frequency conversion is realized and a power supply and a main control panel are also required to be controlled; generally, a control power supply module or circuit is provided, most of control power supplies are taken from a direct current bus, so that the control power supply module or circuit has the advantages that parameters such as fault records are stored after the external network is powered off, direct current power supply is also provided, and the voltage detection function can be completed, so that the control power supply module also has voltage loss and overvoltage protection, and the heating of electronic elements, particularly a main loop, is serious, so that a heat dissipation plate and a heat dissipation fan are also necessary for a frequency converter.

In the prior art, a main loop and a capacitor part in a common frequency converter are very easy to generate heat, and the frequency converter is only cooled by air convection by arranging convection holes, when the frequency converter works for a long time at high power, the cooling effect is poor in the cooling mode, the high-temperature damage in the frequency converter is easily caused by poor cooling for a long time, part of the frequency converter is cooled by a single fan, and a corresponding flow guide mechanism is not arranged, so that the air cooling effect is poor, the temperature in the frequency converter cannot be rapidly reduced, the risk of burning out the inside of the frequency converter is increased, on the other hand, a corresponding alarm and temperature sensing device is lacked, the temperature in the frequency converter cannot be controlled in real time, so that the power can not be cut off in time and a corresponding warning mechanism can not be triggered when the temperature in the frequency converter is continuously increased and the cooling effect is not large, and most frequency converters are provided with corresponding heat, meanwhile, a corresponding dustproof structure is not arranged, so that the temperature of the surface of the frequency converter is increased due to the fact that dust covers the surface of the frequency converter after the frequency converter operates for a long time, and therefore the frequency converter with high safety and dust prevention is provided to solve the technical problems in the background technology.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the frequency converter with high safety and dust prevention, which has the advantages of rapid cooling, dust prevention and the like, and solves the problems of poor cooling effect, easy dust sticking and the like of the frequency converter.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a frequency converter with high safety and dust prevention comprises a shell, wherein the inner walls of two sides of the shell are fixedly connected with the same heat dissipation bottom plate, the heat dissipation bottom plate is fixedly connected with a large-capacity capacitor, a rectifying unit and a control unit, the inner wall of the bottom side of the shell is fixedly connected with a base, the base is fixedly connected with a motor, one end of the motor is fixedly connected with an input shaft through an inner coupler of the motor, one end of the input shaft is fixedly connected with a driving gear, the inner walls of two sides of the shell are respectively provided with a rectangular groove, the inner wall of one side of each of the two rectangular grooves is provided with a main shaft groove, the two main shaft grooves correspond to each other in position, the two main shaft grooves are respectively rotatably sleeved with the same driving shaft, the driving shaft is positioned in one of the rectangular grooves, the driving shaft is fixedly sleeved with a driven, the fixed cover of driving shaft has connect first drive pulley, first drive pulley with driven gear all is located same one end of driving shaft, one of them fixedly connected with is same two connecting plates on the both sides inner wall that is close to each other of rectangular channel, another fixedly connected with is same connecting plate on the both sides inner wall that the rectangular channel is close to each other, the fixed cover of driving shaft has connect the second drive pulley.

Preferably, one of them first shaft hole has been seted up to one side of connecting plate, with one side seted up first rotation groove on the inner wall of one side of rectangular channel, first rotation groove reaches first shaft downthehole all fixed first bearing, two of having cup jointed first driven shaft in the first bearing, the both ends of first driven shaft run through two correspondences respectively first bearing, the both ends of first driven shaft extend to respectively outside one side in first rotation groove and first shaft hole, fixed the cup jointing has driven pulley on the first driven shaft, driven pulley with the tensioning has same first transmission belt on the second driving pulley, the one end fixedly connected with heat dissipation fan of first driven shaft.

Preferably, one of them the second shaft hole has been seted up to one side of connecting plate, with one side seted up the second on the inner wall of one side of rectangular channel and rotated the groove, the second shaft hole with the second rotates the inslot and all fixedly cup jointed the second bearing, two the transmission shaft has all fixedly cup jointed in the second bearing, two correspondences are run through respectively at the both ends of transmission shaft the second bearing, the both ends of transmission shaft extend to respectively outside one side of second drive inslot and second shaft hole, the last fixedly cup jointed drive pulley of transmission shaft, drive pulley with the last tensioning of first drive pulley has same second drive belt, the one end fixedly connected with drive gear of transmission shaft.

Preferably, one side of one of the connecting plates is provided with a third rotating hole, the inner wall of one side of the rectangular groove on the same side is provided with a third rotating groove, the third rotating groove and the third rotating hole are internally and fixedly sleeved with a third bearing, two third bearings are internally and fixedly sleeved with the same second driven shaft, two ends of the second driven shaft respectively penetrate through the two third bearings, two ends of the second driven shaft respectively extend into the third rotating groove and out of one side of the third rotating hole, one end of the second driven shaft is fixedly connected with a reverse gear, and the reverse gear is meshed with the transmission gear.

Preferably, the fixed cover of having connect the air guide fan on the second driven shaft, inlet port and venthole have been seted up respectively to the both sides of casing, the inlet port reaches the position of venthole respectively with the heat dissipation fan with the air guide fan position is corresponding, the top fixedly connected with signal post of casing, fixedly connected with alarm lamp on the signal post, one side fixedly connected with heat-conducting plate of heat dissipation bottom plate, a plurality of evenly distributed temperature sensor of fixedly connected with on the heat-conducting plate.

Preferably, a central processing unit is fixedly connected to the inner wall of the bottom side of the housing, a temperature conducting wire is fixedly connected to the temperature sensor, the other end of the temperature conducting wire is fixedly connected to the central processing unit, a driving signal device is arranged on the motor, a driving conducting wire is fixedly connected to the driving signal device, and the other end of the driving conducting wire is fixedly connected to the central processing unit.

Preferably, fixedly connected with warning conducting wire in the alarm lamp, the other end of warning conducting wire runs through signal post and fixed connection are in on the central processing unit, fixedly connected with electric capacity control line on the large capacity electric capacity, the other end of electric capacity control line is fixed in the central processing unit, central processing unit with the alarm lamp the motor with temperature sensor reaches electric connection between the large capacity electric capacity.

Preferably, one side of the shell is provided with a plurality of rectangular holes which are uniformly distributed, one side of the shell is provided with a rectangular sliding groove, the rectangular sliding groove is communicated with the plurality of rectangular holes which are uniformly distributed, the inner wall of one side of the rectangular sliding groove is fixedly connected with two extrusion springs, a filter plate is arranged in the rectangular sliding groove, the filter plate is matched with the rectangular sliding groove, one side of the filter plate is contacted with the two extrusion springs, and one side of the filter plate is provided with a plurality of filter holes which are uniformly distributed.

Preferably, the top and the bottom of the filter plate and the bottom side and the top side inner wall of the rectangular sliding groove are fixedly connected with elastic hemispheres, the sum of the diameters of the two elastic hemispheres in the same relative position in a natural state is larger than the distance between the top side of the filter plate and the top side inner wall of the rectangular sliding groove, and the sum of the diameters of the two elastic hemispheres in the same relative position under the maximum deformation is smaller than the distance between the top side of the filter plate and the top side inner wall of the rectangular sliding groove. One side fixedly connected with handle of filter.

(III) advantageous effects

Compared with the prior art, the invention has the following beneficial effects:

1. this converter with high security and dirt-proof, real-time temperature through temperature sensor with large capacity electric capacity and rectifier unit and the control unit passes through the temperature conduction line input to central processing unit, when the temperature of any one of them unit reaches central processing unit's settlement temperature, will cool off and transmit to motor and alarm lamp through drive conduction line and warning conduction line respectively with alarm signal by central processing unit in, thereby start air cooling system and warning system, and simultaneously, the power supply through electric capacity control line initiative cutting off large capacity electric capacity, prevent that the temperature from lasting rising, burn out the converter.

2. This converter with high security and dirt-proof, through starter motor, drive driven gear by the driving gear and rotate, then make the driving shaft rotate, then make second driving pulley drive driven pulley rotate on the one hand, driven pulley drives the heat dissipation fan through first driven shaft and rotates, thereby carry out the forced air cooling heat dissipation to large capacity electric capacity and rectifier unit and the control unit, simultaneously through driving pulley and drive gear's setting, indirectly make air guide fan and heat dissipation fan antiport, each other is antiport's setting through air guide fan and heat dissipation fan, thereby the circulation of air speed on large capacity electric capacity and rectifier unit and the control unit surface has been accelerated, then realized rapid cooling's purpose, prevent that the temperature in the converter from lasting rising.

3. This converter with high security and dirt-proof through the setting of alarm lamp and warning conducting wire, can trigger alarm device under central processing unit's control when arbitrary unit high temperature in the converter to can in time inform relevant measurement personnel with inside high temperature information, intervene manual control in time, avoid the converter to last high temperature and suffer the damage.

4. This converter with high security and dirt-proof through the setting of a plurality of rectangular holes, can exert better cooling effect when the daily work of converter, through the filter with cross the setting of filtration hole for outside dust is difficult for getting into inside the converter, thereby prevents that the converter from receiving external dust pollution, has avoided the intensification converter of covering for a long time heaies up.

5. This converter with high security and dirt-proof through the mutual adaptation of elasticity hemisphere for the filter can be in the rectangle spout in a flexible way easily, simultaneously, through the setting of two extrusion springs, conveniently pops out whole filter, thereby has realized the purpose of the filter of taking in a flexible way, conveniently clears up and maintains the filter.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic perspective view of a first perspective of the present invention;

FIG. 3 is a schematic view of a second perspective cutaway view of the present invention;

FIG. 4 is a third perspective cut-away schematic view of the present invention;

FIG. 5 is a schematic sectional view of the shell of the present invention;

FIG. 6 is a schematic view of the internal perspective structure of the present invention;

FIG. 7 is a perspective view of a first embodiment of the present invention;

FIG. 8 is a partial perspective view of the present invention from a second perspective;

FIG. 9 is a schematic view of a fourth perspective cutaway view of the present invention;

FIG. 10 is a perspective view of a filter plate according to the present invention;

FIG. 11 is an enlarged view of the structure at A in FIG. 9 according to the present invention.

In the figure: 1. a housing; 2. a heat dissipation base plate; 3. a large-capacity capacitor; 4. a rectifying unit; 5. a control unit; 6. a base; 7. a motor; 8. an input shaft; 9. a driving gear; 10. a rectangular groove; 11. a drive shaft; 12. a driven gear; 13. a first drive pulley; 14. a connecting plate; 15. a second drive pulley; 16. a first driven shaft; 17. a driven pulley; 18. a first drive belt; 19. a heat dissipation fan; 20. a drive shaft; 21. a drive pulley; 22. a second drive belt; 23. a transmission gear; 24. a second driven shaft; 25. a reverse gear; 26. an air guide fan; 27. an air inlet; 28. an air outlet; 29. an alarm lamp; 30. a heat conducting plate; 31. a temperature sensor; 32. a central processing unit; 33. a temperature conducting wire; 34. a drive conductive line; 35. a warning conducting wire; 36. a capacitance control line; 37. a rectangular hole; 38. a rectangular chute; 39. a compression spring; 40. a filter plate; 41. a filtration pore; 42. an elastic hemisphere; 43. a handle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-11, the present embodiment discloses a frequency converter with high safety and dust prevention, which comprises a housing 1, wherein the inner walls of two sides of the housing 1 are fixedly connected with the same heat dissipation bottom plate 2, the heat dissipation bottom plate 2 is fixedly connected with a large-capacity capacitor 3, a rectification unit 4 and a control unit 5, the inner wall of the bottom side of the housing 1 is fixedly connected with a base 6, the base 6 is fixedly connected with a motor 7, one end of the motor 7 is fixedly connected with an input shaft 8 through an internal coupler thereof, one end of the input shaft 8 is fixedly connected with a driving gear 9, the inner walls of two sides of the housing 1 are respectively provided with a rectangular groove 10, the inner wall of one side of each of the two rectangular grooves 10 is provided with a main shaft groove, the two main shaft grooves are correspondingly positioned, the same driving shaft 11 is rotatably sleeved in the two main shaft grooves, the driving shaft, driven gear 12 meshes with driving gear 9 mutually, and the fixed cover of driving shaft 11 has been connected with first drive pulley 13, and first drive pulley 13 all is located same one end of driving shaft 11 with driven gear 12, and fixedly connected with same two connecting plates 14 on the both sides inner wall that is close to each other of one of them rectangular channel 10, and fixedly connected with same connecting plate 14 on the both sides inner wall that is close to each other of another rectangular channel 10, and the fixed cover of driving shaft 11 has been connected with second drive pulley 15.

Further, in the above scheme, one side of one of the connecting plates 14 has been seted up first shaft hole, a first rotation groove has been seted up on the inner wall of one side of rectangular channel 10 with one side, first rotation groove and first shaft hole are downthehole all to be fixed the cup joint first bearing, first driven shaft 16 has all been fixed the cup joint in two first bearings, two first bearings that correspond are run through respectively at the both ends of first driven shaft 16, the both ends of first driven shaft 16 extend to respectively in the first rotation groove and outside one side of first shaft hole, fixed the cup joint has driven pulley 17 on first driven shaft 16, driven pulley 17 and the tensioning has same first drive belt 18 on the second drive belt pulley 15, the one end fixedly connected with heat dissipation fan 19 of first driven shaft 16, through the setting of first drive belt 18, make second drive belt pulley 15 rotate and drive driven pulley 17 and rotate.

Further, in the above scheme, one side of one of the connecting plates 14 has a second shaft hole, the inner wall of one side of the rectangular groove 10 on the same side has a second rotating groove, the second shaft hole and the second rotating groove are both fixedly sleeved with a second bearing, the two second bearings are both fixedly sleeved with a transmission shaft 20, two ends of the transmission shaft 20 respectively penetrate through the two corresponding second bearings, two ends of the transmission shaft 20 respectively extend into the second transmission groove and outside one side of the second shaft hole, the transmission shaft 20 is fixedly sleeved with a transmission belt pulley 21, the transmission belt pulley 21 and the first driving belt pulley 13 are tensioned with the same second transmission belt 22, one end of the transmission shaft 20 is fixedly connected with a transmission gear 23, and the first driving belt pulley 13 is rotated to drive the transmission belt pulley 21 to rotate through the arrangement of the second transmission belt 22.

Further, in the above scheme, a third rotating hole is formed in one side of one of the connecting plates 14, a third rotating groove is formed in the inner wall of one side of the rectangular groove 10 on the same side, third bearings are fixedly sleeved in the third rotating groove and the third rotating hole, the same second driven shaft 24 is fixedly sleeved in the two third bearings, two ends of the second driven shaft 24 penetrate through the two third bearings respectively, two ends of the second driven shaft 24 extend into the third rotating groove and out of one side of the third rotating hole respectively, one end of the second driven shaft 24 is fixedly connected with a reverse gear 25, the reverse gear 25 is meshed with the transmission gear 23, and the rotation directions of the second driven shaft 24 and the first driven shaft 16 are opposite through the arrangement of the transmission gear 23.

Further, in above-mentioned scheme, fixed cover has been connected with air guide fan 26 on second driven shaft 24, inlet port 27 and venthole 28 have been seted up respectively to the both sides of casing 1, the position of inlet port 27 and venthole 28 is corresponding with heat dissipation fan 19 and air guide fan 26 position respectively, the top fixedly connected with signal post of casing 1, fixedly connected with alarm lamp 29 on the signal post, one side fixedly connected with heat-conducting plate 30 of radiating bottom plate 2, a plurality of evenly distributed temperature sensor 31 of fixedly connected with on the heat-conducting plate 30, setting through alarm lamp 29, the convenience is to the early warning of converter high temperature.

Further, in the above scheme, fixedly connected with central processing unit 32 on the bottom side inner wall of casing 1, fixedly connected with temperature conduction line 33 on the temperature sensor 31, the other end fixed connection of temperature conduction line 33 is on central processing unit 32, be equipped with the driving signal ware on the motor 7, fixedly connected with drive conduction line 34 on the driving signal ware, the other end fixed connection of drive conduction line 34 is on central processing unit 32, through the setting of driving signal ware, convenient central processing unit 32 can carry out real-time forced air cooling according to the inside temperature of converter.

Further, in the above scheme, fixedly connected with warning conducting wire 35 in alarm lamp 29, the other end of warning conducting wire 35 runs through the signal post and fixed connection is on central processing unit 32, fixedly connected with electric capacity control line 36 on the large capacity electric capacity 3, the other end of electric capacity control line 36 is fixed in central processing unit 32, central processing unit 32 and alarm lamp 29, electric connection between motor 7 and temperature sensor 31 and the large capacity electric capacity 3, through the electric connection between a plurality of electronic component, make central processing unit 32 can realize unified control cooling and alarm system by temperature sensor 31.

Further, in above-mentioned scheme, a plurality of even rectangular holes 37 of distribution have been seted up to one side of casing 1, rectangle spout 38 has been seted up to one side of casing 1, rectangle spout 38 is linked together with a plurality of even rectangular holes 37 of distribution, two extrusion springs 39 of fixedly connected with on one side inner wall of rectangle spout 38, be equipped with filter 40 in the rectangle spout 38, filter 40 and rectangle spout 38 looks adaptation, one side and two extrusion springs 39 of filter 40 contact, a plurality of even filtration holes 41 of distribution have been seted up to one side of filter 40, setting through extrusion spring 39, be convenient for take out filter 40.

Further, in the above solution, the elastic hemispheres 42 are fixedly connected to the top and bottom of the filter plate 40 and the bottom and top inner walls of the rectangular sliding chute 38, the sum of the diameters of the two elastic hemispheres 42 in the same relative position in the natural state is larger than the distance between the top side of the filter plate 40 and the top inner wall of the rectangular sliding chute 38, and the sum of the diameters of the two elastic hemispheres 42 in the same relative position under the maximum deformation is smaller than the distance between the top side of the filter plate 40 and the top inner wall of the rectangular sliding chute 38. One side fixedly connected with handle 43 of filter 40, through the setting of handle 43, the clearance is conveniently taken out with filter 40.

The working principle of the invention is as follows: when the temperature sensor is used, the real-time temperature of the large-capacity capacitor 3, the rectifying unit 4 and the control unit 5 is input to the central processing unit 32 through the temperature conducting wire 33 through the temperature sensor 31, when the temperature of any one unit reaches the set temperature of the central processing unit 32, the central processing unit 32 transmits cooling and alarm signals to the motor 7 and the alarm lamp 29 through the driving conducting wire 34 and the warning conducting wire 35 respectively, so that an air cooling system and a warning system are started, meanwhile, the power supply of the large-capacity capacitor 3 is cut off actively through the capacitor control wire 36, the temperature is prevented from continuously rising, and the frequency converter is burnt.

Through starter motor 7, drive driven gear 12 by driving gear 9 and rotate, then make driving shaft 11 rotate, then make second driving pulley 15 drive driven pulley 17 to rotate on the one hand, driven pulley 17 drives heat dissipation fan 19 through first driven shaft 16 and rotates, thereby carry out the forced air cooling heat dissipation to large capacity electric capacity 3 and rectifier unit 4 and the control unit 5, simultaneously through the setting of driving pulley 21 and drive gear 23, indirectly make air guide fan 26 and 19 antiport of heat dissipation fan, fan 19 each other is antiport's setting through air guide fan 26 and heat dissipation, thereby accelerated the circulation of air speed on large capacity electric capacity 3 and rectifier unit 4 and the control unit 5 surface, then realized rapid cooling's purpose, prevent that the temperature in the converter from lasting rising.

Through the setting of alarm lamp 29 and warning conducting wire 35, can trigger alarm device under central processing unit 32's control when arbitrary unit high temperature in the converter to can in time inform relevant detection personnel with inside high temperature information, intervene manual control in time, avoid the converter to last high temperature and suffer the damage.

Through the setting of a plurality of rectangular holes 37, can exert better cooling effect when the daily work of converter, through the setting of filter 40 with filtration 41 for outside dust is difficult for getting into inside the converter, thereby prevents that the converter from receiving external dust pollution, has avoided covering the intensification converter's of dust for a long time intensification.

Through the mutual adaptation of elasticity hemisphere 42 for filter 40 can be easily nimble the locking in rectangle spout 38, simultaneously, through the setting of two extrusion springs 39, conveniently pops out whole filter 40, thereby has realized the nimble mesh of taking filter 40, conveniently clears up and maintains filter 40.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.