CN106992736B - High-protection intelligent variable frequency driver - Google Patents
High-protection intelligent variable frequency driver Download PDFInfo
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- CN106992736B CN106992736B CN201710288012.2A CN201710288012A CN106992736B CN 106992736 B CN106992736 B CN 106992736B CN 201710288012 A CN201710288012 A CN 201710288012A CN 106992736 B CN106992736 B CN 106992736B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
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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
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/06—Hermetically-sealed casings
- H05K5/061—Hermetically-sealed casings sealed by a gasket held between a removable cover and a body, e.g. O-ring, packing
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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
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20909—Forced ventilation, e.g. on heat dissipaters coupled to components
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a high-protection intelligent variable frequency driver which comprises a protection radiating structure, a combined circuit protection device, a multi-layer sealing protection device and a waterproof radiating fan device. The invention can solve the problems of harmonic distortion and overvoltage generated by the frequency converter in industrial control, reduce the phenomena of misoperation, even dead halt and the like of a frequency converter control circuit and other electronic equipment of the same power supply system caused by harmonic pollution of the power supply system, enhance the anti-interference compatibility and stability of the circuit, enable a heat dissipation structure to fully meet the heat dissipation requirement, effectively prevent dust, water vapor and other foreign matters from entering the frequency converter driver from the heat dissipation structure to cause functional faults, effectively improve the environment bearing capacity of the frequency converter driver, enable the sealing of an interface to be more thorough after the frequency converter is installed, and have reasonable structure, convenient installation, stable and durable sealing, effectively reduce the influence of external environment factors on the inside of the frequency converter and improve the service performance of the frequency converter.
Description
[ field of technology ]
The invention relates to the technical field of frequency converters, in particular to the technical field of high-protection intelligent frequency conversion drivers.
[ background Art ]
A Variable-frequency Drive (VFD) is a power control device that applies a frequency conversion technique and a microelectronics technique to control an ac motor by changing a frequency of a motor operating power supply. The frequency converter mainly comprises a rectifying unit (alternating current to direct current), a filtering unit, an inverting unit (direct current to alternating current), a braking unit, a driving unit, a detecting unit micro-processing unit and the like. The frequency converter is used for adjusting the voltage and frequency of the output power supply by switching on and off the internal IGBT, and providing the required power supply voltage according to the actual requirement of the motor, so as to achieve the purposes of energy saving and speed regulation. In industrial motor control, the frequency converter is rapidly the mainstream of motor speed regulation in recent years due to the advantages of good speed regulation performance, remarkable energy conservation, perfect protection function, convenient use and maintenance and the like. The main circuit of the frequency converter consists of a rectifying circuit, an intermediate direct current circuit and an inverter, and in the process of realizing the energy conversion of the AC-DC-AC, the inversion of a high-power transistor can generate a large amount of higher harmonic waves and output pulse voltages in an input and output loop. The abundant harmonic waves pollute the power supply system, and cause the phenomena of misoperation, even dead halt and the like of a frequency converter control circuit and other electronic equipment of the same power supply system.
[ invention ]
The invention aims to solve the problems in the prior art, and provides a high-protection intelligent variable frequency driver, which can solve the problems of harmonic distortion and overvoltage generated by a frequency converter in industrial control, reduce the phenomena of misoperation, even dead halt and the like of a frequency converter control circuit and other electronic equipment of the same power supply system caused by harmonic pollution of the power supply system, strengthen the anti-interference compatibility and stability of the circuit, enable a heat radiation structure to fully meet the heat radiation requirement, effectively prevent dust, water vapor and other foreign matters from entering the frequency converter driver from the heat radiation structure to cause functional faults, effectively improve the environment bearing capacity of the frequency converter driver, enable the sealing of an interface to be more thorough after the frequency converter is installed, have reasonable structure, be convenient to install, be stable and durable in sealing, effectively reduce the influence of external environment factors on the inside of the frequency converter, and improve the service performance of the frequency converter.
In order to achieve the above purpose, the invention provides a high-protection intelligent variable frequency driver, which comprises a protection radiating structure, a combined circuit protection device, a multi-layer sealing protection device and a waterproof radiating fan device, wherein the protection radiating structure comprises an air inlet outer cover, an isolation layer, a limiting inner cover, an exhaust fan and a filter screen; the combined circuit protection device comprises a basic circuit board, an isolation protection plate, a filter circuit board, a capacitor plate and a capacitor sealing plate, wherein the isolation protection plate is arranged at the top of the basic circuit board; the multi-layer sealing protection device comprises a sealing upper shell, a sealing convex edge, a sealing lower shell, a lower sealing groove, a lower sealing gasket, a side sealing groove, a side sealing gasket, a limiting flange and a limiting groove, wherein the sealing convex edge is arranged at the bottom of the sealing upper shell; the waterproof radiator fan device comprises a waterproof shell, a flow guiding and dehumidifying plate, a fan rotor, a waterproof sleeve and fan blades, wherein the fan rotor is arranged in the waterproof shell, the waterproof sleeve is sleeved on the fan rotor, the fan blades are arranged in the waterproof sleeve in a penetrating mode, and the flow guiding and dehumidifying plate is arranged at the bottom of the waterproof shell.
Preferably, the air inlet outer cover is provided with a plurality of air inlets, the air inlets are uniformly distributed on the peripheral side wall of the air inlet outer cover, the isolation layer is a porous breathable sponge layer, the desiccant is filled in the isolation layer, the isolation layer is uniformly filled in all gaps between the limiting inner cover and the air inlet outer cover, the limiting inner cover is a funnel-shaped hollowed-out cover, the funnel-shaped bottom end of the limiting inner cover is fixedly connected with the air inlet outer cover, the connecting mode of the limiting inner cover and the air inlet outer cover is detachable, the exhaust fan is fixedly arranged at the bottom center position of the limiting inner cover, the outermost side of the exhaust fan protrudes out of the bottom of the air inlet outer cover and is communicated with the outside, and the filter screen is a three-layer waterproof screen.
Preferably, the isolation protection plate is connected with the base circuit board through a heightening bolt, the installation mode of the isolation protection plate is detachable, the isolation protection plate is an electromagnetic shielding plate, EMC wave filtering unit circuits are arranged on the filter circuit board, flat cable sockets are arranged on the filter circuit board and the base circuit board, the flat cable sockets are connected through connecting flat cables, the filter circuit board is installed on the isolation protection plate through a rubber bolt, the installation mode of the filter circuit board is detachable, the connection mode of the capacitor plate and the base circuit board is detachable, a plurality of capacitor seal grooves are arranged on the capacitor seal plate, the capacitor seal grooves are coated on all capacitors of the capacitor plate, and the capacitor seal grooves are heat conduction shielding grooves.
Preferably, the cross section shape of the sealing convex edge is an arc-shaped bulge, the arc degree of the arc-shaped bulge is 150-180 degrees, an arc-shaped groove corresponding to the sealing convex edge is formed in the top of the lower sealing gasket, the lower sealing gasket is a soft rubber gasket, the side sealing groove is vertically arranged on the sealing convex edge, the cross section shape of the side sealing gasket is a vertically arranged square strip, the side sealing gasket is fixedly arranged in the side sealing groove, the side sealing gasket is a soft rubber gasket, the limiting groove is an arc-shaped groove with a vertically downward opening, the limiting flange is vertically arranged, an arc-shaped bulge corresponding to the limiting groove is formed in the top end of the limiting flange, and the sealing upper shell and the sealing lower shell are fixed together through bolts.
As the preference, the vertical setting of fan rotor is in the middle part of waterproof housing, waterproof cover's shape is the conical that the bottom contracts gradually, waterproof cover's bottom shape is the hemisphere, waterproof cover and fan pass through the sealed glue adhesion together, waterproof cover is the copper wire rubber sleeve that presss from both sides, fan rotor cladding is in waterproof cover completely, waterproof sheathes in and are provided with a plurality of fan blade sockets that evenly encircle the distribution, the fan blade adhesion is in the fan blade socket, the mounting means of fan blade is detachable, be provided with many water conservancy diversion dehumidification blend stop on the water conservancy diversion dehumidification board, water conservancy diversion dehumidification blend stop evenly distributes side by side on the dehumidification board of flowing backwards, the cross sectional shape of water conservancy diversion dehumidification blend stop is the L shape recess of opening oblique left below, water conservancy diversion dehumidification blend stop intussuseption is filled with the moisture absorption sponge strip, the mounting means of water conservancy diversion dehumidification board is detachable.
The invention has the beneficial effects that: according to the invention, through combining the protection radiating structure, the combined circuit protecting device, the multi-layer sealing protecting device and the waterproof radiating fan device, through experimental optimization, the problems of harmonic distortion and overvoltage generated by the frequency converter in industrial control can be solved, the phenomena of misoperation, even dead halt and the like of a frequency converter control circuit and other electronic equipment of the same power supply system caused by harmonic pollution of the power supply system are reduced, the anti-interference compatibility and stability of the circuit are enhanced, the radiating structure can fully meet the condition of radiating requirements, the functional faults caused by the fact that foreign matters such as dust and water vapor enter the frequency converter from the radiating structure are effectively prevented, the environment bearing capacity of the frequency converter is effectively improved, the frequency converter can be sealed more thoroughly at an interface after being installed, the structure is reasonable, the installation is convenient, the sealing is stable and durable, the influence of external environment factors on the inside of the frequency converter is effectively reduced, and the service performance of the frequency converter is improved.
The features and advantages of the present invention will be described in detail by way of example with reference to the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a schematic diagram of a high protection intelligent variable frequency drive according to the present invention;
FIG. 2 is a schematic diagram of a structure of a protection heat dissipation structure of a high protection intelligent variable frequency drive according to the present invention;
FIG. 3 is a schematic diagram of a combined circuit protection device of a high protection intelligent variable frequency driver according to the present invention;
fig. 4 is a schematic structural diagram of a multi-layer sealing protection device of a high protection intelligent variable frequency drive according to the present invention.
Fig. 5 is a schematic structural diagram of a waterproof radiator fan device of a high-protection intelligent variable frequency drive according to the present invention.
In the figure: 1-protection radiating structure, 2-combined circuit protection device, 3-multilayer sealing protection device, 4-waterproof radiating fan device, 11-air inlet housing, 12-isolation layer, 13-limit inner housing, 14-exhaust fan, 15-filter screen, 16-air inlet, 21-basic circuit board, 22-isolation protection board, 23-filter circuit board, 24-capacitor board, 25-capacitor closing board, 26-winding displacement jack, 27-capacitor sealing groove, 31-sealing upper shell, 32-sealing convex edge, 33-sealing lower shell, 34-lower sealing groove, 35-lower sealing gasket, 36-side sealing groove, 37-side sealing gasket, 38-limit flange, 39-limit groove, 41-waterproof shell, 42-diversion dehumidification board, 43-fan rotor, 44-waterproof sleeve, 45-fan blade, 46-fan blade jack, 47-diversion dehumidification barrier strip and 48-moisture absorption sponge strip.
[ detailed description ] of the invention
Referring to fig. 1, 2, 3, 4 and 5, the high-protection intelligent variable frequency drive of the present invention comprises a protection heat dissipation structure 1, a combined circuit protection device 2, a multi-layer sealing protection device 3 and a waterproof heat dissipation fan device 4, wherein the protection heat dissipation structure 1 comprises an air inlet outer cover 11, an isolation layer 12, a limiting inner cover 13, an exhaust fan 14 and a filter screen 15, the inner side of the air inlet outer cover 11 is provided with the limiting inner cover 13, the isolation layer 12 is arranged between the limiting inner cover 13 and the air inlet outer cover 11, the exhaust fan 14 is arranged in the limiting inner cover 13, the inner side of the exhaust fan 14 is provided with the filter screen 15, the air inlet outer cover 11 is provided with a plurality of air inlet holes 16, the air inlet holes 16 are uniformly distributed on the peripheral side walls of the air inlet outer cover 11, the isolating layer 12 is a porous air-permeable sponge layer, the isolating layer 12 is filled with a drying agent, the isolating layer 12 is uniformly filled in all gaps between the limiting inner cover 13 and the air inlet outer cover 11, the limiting inner cover 13 is a funnel-shaped hollowed-out cover, the funnel-shaped bottom end of the limiting inner cover 13 is fixedly connected with the air inlet outer cover 11, the limiting inner cover 13 and the air inlet outer cover 11 are detachably connected, the exhaust fan 14 is fixedly arranged at the bottom center position of the limiting inner cover 13, the outermost side of the exhaust fan 14 protrudes out of the bottom of the air inlet outer cover 11 and is communicated with the outside, and the filter screen 15 is a three-layer waterproof screen; the combined circuit protection device 2 comprises a base circuit board 21, an isolation protection plate 22, a filter circuit board 23, a capacitor plate 24 and a capacitor sealing plate 25, wherein the isolation protection plate 22 is arranged at the top of the base circuit board 21, the filter circuit board 23 is arranged on the isolation protection plate 22, the capacitor plate 24 is arranged at the edge of the upper part of the base circuit board 21, the capacitor sealing plate 25 is arranged on the capacitor plate 24, the isolation protection plate 22 is connected with the base circuit board 21 through a heightening bolt, the installation mode of the isolation protection plate 22 is detachable, the isolation protection plate 22 is an electromagnetic shielding plate, the filter circuit board 23 is provided with an EMC filtering unit circuit, the filter circuit board 23 and the base circuit board 21 are both provided with a bus bar socket 26, the bus bar socket 26 is connected with each other through a connecting bus bar, the filter circuit board 23 is arranged on the isolation protection plate 22 through a rubber bolt, the installation mode of the filter circuit board 23 is detachable, the capacitor plate 24 and the base circuit board 21 are connected in a detachable mode, the capacitor sealing plate is provided with a plurality of capacitor sealing plates 27, and all the capacitor sealing grooves 27 cover all the capacitor sealing grooves 27; the multilayer sealing protection device 3 comprises a sealing upper shell 31, a sealing convex edge 32, a sealing lower shell 33, a lower sealing groove 34, a lower sealing gasket 35, a side sealing groove 36, a side sealing gasket 37, a limiting flange 38 and a limiting groove 39, wherein the sealing convex edge 32 is arranged at the bottom of the sealing upper shell 31, the side sealing groove 36 is arranged at the inner side of the sealing upper shell 31, the side sealing gasket 37 is arranged in the side sealing groove 36, the limiting groove 39 is arranged above the side sealing gasket 37, the lower sealing groove 34 is arranged at the top of the sealing lower shell 33, the lower sealing gasket 35 is arranged in the lower sealing groove 34, the limiting flange 38 is arranged at the inner side of the sealing lower shell 33, the sealing upper shell 31 and the sealing lower shell 33 are correspondingly arranged up and down, the cross section of the sealing convex edge 32 is a circular arc-shaped bulge, the degree of the circular arc-shaped bulge is 150-180 degrees, the top of the lower sealing gasket 35 is provided with a circular arc-shaped groove corresponding to the sealing convex edge 32, the side sealing gasket 36 is vertically arranged at the side sealing groove 32, the side sealing gasket 36 is vertically arranged at the top of the sealing upper shell 37, the side of the sealing gasket is a square-shaped sealing groove 39 corresponding to the side sealing flange 37, and is arranged at the side of the sealing flange 37, and is vertically arranged at the side of the sealing groove 39, and is vertically opposite to the side sealing groove 39; waterproof radiator fan device 4 includes waterproof shell 41, water conservancy diversion dehumidification board 42, fan rotor 43, waterproof cover 44, fan blades 45, be provided with fan rotor 43 in the waterproof shell 41, the cover is equipped with waterproof cover 44 on the fan rotor 43, fan blades 45 alternate and set up in waterproof cover 44, water conservancy diversion dehumidification board 42 is installed to the bottom of waterproof shell 41, the vertical setting of fan rotor 43 is in the middle part of waterproof shell 41, the shape of waterproof cover 44 is the conical that the bottom contracts gradually, the bottom shape of waterproof cover 44 is the hemisphere, waterproof cover 44 and fan rotate through the adhesion of sealant together, the cover 44 is the copper wire rubber sleeve that presss from both sides, fan rotor 43 fully wraps in waterproof cover 44, be provided with a plurality of evenly around distributed's flabellum sockets 46 on the waterproof cover 44, fan blades 45 adhesion is in flabellum socket 46, the mounting means of fan blades 45 is detachable, be provided with many water conservancy diversion dehumidification blend stop 47 on the dehumidification board 42, water conservancy diversion blend stop 47 evenly distributes and is the water conservancy diversion blend stop 47 side by side down, the water conservancy diversion blend stop 47 is the water conservancy diversion blend stop 48 that is detachable in the cross-section shape of water conservancy diversion L.
The above embodiments are illustrative of the present invention, and not limiting, and any simple modifications of the present invention fall within the scope of the present invention.
Claims (3)
1. A high protection intelligence variable frequency drive, its characterized in that: the novel heat radiation protection device comprises a protection heat radiation structure (1), a combined circuit protection device (2), a multi-layer sealing protection device (3) and a waterproof heat radiation fan device (4), wherein the protection heat radiation structure (1) comprises an air inlet outer cover (11), an isolation layer (12), a limiting inner cover (13), an exhaust fan (14) and a filter screen (15), the limiting inner cover (13) is arranged on the inner side of the air inlet outer cover (11), the isolation layer (12) is arranged between the limiting inner cover (13) and the air inlet outer cover (11), the exhaust fan (14) is arranged in the limiting inner cover (13), and the filter screen (15) is arranged on the inner side of the exhaust fan (14); the combined circuit protection device (2) comprises a base circuit board (21), an isolation protection plate (22), a filter circuit board (23), a capacitor plate (24) and a capacitor closing plate (25), wherein the isolation protection plate (22) is arranged at the top of the base circuit board (21), the filter circuit board (23) is arranged on the isolation protection plate (22), the capacitor plate (24) is arranged at the edge of the upper part of the base circuit board (21), and the capacitor closing plate (25) is arranged on the capacitor plate (24); the multi-layer sealing protection device (3) comprises an upper sealing shell (31), a sealing convex edge (32), a lower sealing shell (33), a lower sealing groove (34), a lower sealing gasket (35), a side sealing groove (36), a side sealing gasket (37), a limiting flange (38) and a limiting groove (39), wherein the sealing convex edge (32) is arranged at the bottom of the upper sealing shell (31), the side sealing groove (36) is arranged on the inner side of the upper sealing shell (31), the side sealing gasket (37) is arranged in the side sealing groove (36), the limiting groove (39) is arranged above the side sealing gasket (37), the lower sealing groove (34) is arranged at the top of the lower sealing shell (33), the lower sealing gasket (35) is arranged in the lower sealing groove (34), and the limiting flange (38) is arranged on the inner side of the lower sealing shell (33), and the upper sealing shell (31) and the lower sealing shell (33) are correspondingly arranged up and down. The waterproof radiator fan device (4) comprises a waterproof shell (41), a diversion and dehumidification plate (42), a fan rotor (43), a waterproof sleeve (44) and fan blades (45), wherein the fan rotor (43) is arranged in the waterproof shell (41), the fan rotor (43) is vertically arranged in the middle of the waterproof shell (41), the waterproof sleeve (44) is conical with gradually contracted bottom, the bottom of the waterproof sleeve (44) is hemispherical, the waterproof sleeve (44) and the fan rotate and are adhered together through sealing glue, the waterproof sleeve (44) is a copper wire rubber sleeve, the fan rotor (43) is completely wrapped in the waterproof sleeve (44), a plurality of fan blade sockets (46) which are uniformly and circumferentially distributed are arranged on the fan sleeve (44), the fan blades (45) are adhered in the fan blade sockets (46), the installation mode of the fan blades (45) is detachable, the diversion and dehumidification baffle strips (47) are arranged on the diversion and dehumidification baffle strips (47) uniformly and side by side, the diversion and dehumidification baffle strips (47) are uniformly distributed on the backflow plate, the diversion and dehumidification baffle strips (47) are arranged in the shape of the slope-shaped and the section of the diversion baffle strips (47) are detachable, the waterproof device is characterized in that a waterproof sleeve (44) is sleeved on the fan rotor (43), fan blades (45) are arranged in the waterproof sleeve (44) in an penetrating mode, a flow guiding and dehumidifying plate (42) is arranged at the bottom of the waterproof shell (41), a plurality of air inlets (16) are formed in the air inlet outer cover (11), the air inlets (16) are uniformly distributed on the peripheral side wall of the air inlet outer cover (11), the isolation layer (12) is a porous breathable sponge layer, drying agents are filled in the isolation layer (12), the isolation layer (12) is uniformly filled in all gaps between the limiting inner cover (13) and the air inlet outer cover (11), the limiting inner cover (13) is a hollow cover in a funnel shape, the funnel-shaped bottom end of the limiting inner cover (13) is fixedly connected with the air inlet outer cover (11), the connecting mode of the limiting inner cover (13) and the air inlet outer cover (11) is detachable, the exhaust fan (14) is fixedly arranged at the center of the bottom of the limiting inner cover (13), the outermost side of the exhaust fan (14) protrudes out of the air inlet outer cover (11) and is communicated with the filter screen (15).
2. A high protection intelligent variable frequency drive as claimed in claim 1, wherein: the utility model discloses a filter circuit board, including filter circuit board (24), filter circuit board (23), isolation guard plate (22) link to each other with basic circuit board (21) through the heightening bolt, the mounting means of isolation guard plate (22) is detachable, isolation guard plate (22) are electromagnetic shield board, be provided with EMC wave filtering unit circuit on filter circuit board (23), all be provided with winding displacement socket (26) on filter circuit board (23) and basic circuit board (21), winding displacement socket (26) link to each other through connecting the winding displacement, filter circuit board (23) are installed on isolation guard plate (22) through the rubber bolt, the mounting means of filter circuit board (23) is detachable capacitor plate (24) and basic circuit board (21) connected mode, set up a plurality of capacitor seal grooves (27) on the capacitor seal board, capacitor seal groove (27) cladding is on all electric capacities of capacitor plate (24), capacitor seal groove (27) are heat conduction shielding groove.
3. A high protection intelligent variable frequency drive as claimed in claim 1, wherein: the cross-sectional shape of sealed chimb (32) is convex in the arc, and convex circular arc degree is 150-180 degrees, the top of lower sealing washer (35) is provided with the convex recess that corresponds with sealed chimb (32), lower sealing washer (35) is soft rubber packing ring, side seal groove (36) vertical setting is at sealed chimb (32), the cross-sectional shape of side seal pad (37) is the square rectangular of vertical setting, side seal pad (37) are fixed to be set up in side seal groove (36), side seal pad (37) are soft rubber packing ring, spacing groove (39) are the vertically decurrent convex recess of opening, spacing flange (38) are vertical setting, the top of spacing flange (38) be provided with the convex of spacing groove (39) correspondence sealed epitheca (31) and sealed inferior valve (33) are together through the bolt fastening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710288012.2A CN106992736B (en) | 2017-04-27 | 2017-04-27 | High-protection intelligent variable frequency driver |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710288012.2A CN106992736B (en) | 2017-04-27 | 2017-04-27 | High-protection intelligent variable frequency driver |
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| Publication Number | Publication Date |
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| CN106992736A CN106992736A (en) | 2017-07-28 |
| CN106992736B true CN106992736B (en) | 2023-06-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6730346B2 (en) | 2018-03-09 | 2020-07-29 | ファナック株式会社 | Motor drive |
| CN110518594B (en) * | 2019-09-25 | 2024-04-19 | 广东电网有限责任公司 | On-load voltage regulating system of transformer station and three-phase unbalance compensation device thereof |
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| JPH0775215A (en) * | 1993-09-03 | 1995-03-17 | Seiko Epson Corp | Electric vehicle motor drive unit |
| WO2008071192A1 (en) * | 2006-12-11 | 2008-06-19 | Danfoss Drives A/S | Electronic device and frequency converter of motor |
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| EP2866539A1 (en) * | 2013-10-24 | 2015-04-29 | ABB Oy | Electronic device with waterproof enclosure |
| CN205622526U (en) * | 2016-05-14 | 2016-10-05 | 甘肃阳森电子科技有限公司 | Heat radiator for converter |
| CN206894548U (en) * | 2017-04-27 | 2018-01-16 | 浙江佳乐科仪股份有限公司 | A kind of high protection intelligent frequency-conversion driver |
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| CN106992736A (en) | 2017-07-28 |
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