CN219372315U - Complete machine structure applied to medium-power frequency converter - Google Patents
Complete machine structure applied to medium-power frequency converter Download PDFInfo
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- CN219372315U CN219372315U CN202223333709.2U CN202223333709U CN219372315U CN 219372315 U CN219372315 U CN 219372315U CN 202223333709 U CN202223333709 U CN 202223333709U CN 219372315 U CN219372315 U CN 219372315U
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- inner cavity
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- machine structure
- power frequency
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- 239000003990 capacitor Substances 0.000 claims abstract description 32
- 238000009423 ventilation Methods 0.000 claims abstract description 18
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 22
- 229910052802 copper Inorganic materials 0.000 claims description 22
- 239000010949 copper Substances 0.000 claims description 22
- 238000005192 partition Methods 0.000 claims description 7
- 239000004519 grease Substances 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000004377 microelectronic Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model provides a complete machine structure applied to a medium-power frequency converter, which comprises: the device comprises a whole machine shell, wherein an inner cavity body inside the whole machine shell comprises an inner cavity middle layer and an inner cavity lower layer, the inner cavity middle layer is provided with a reserved space for placing a frequency converter module and a power supply module, and a starting resistor is placed below the frequency converter module; the radiator is arranged in the lower layer of the inner cavity and is fixedly connected with the frequency converter module and the starting resistor in the middle layer of the inner cavity through screws; the capacitor plate is fixedly arranged on the whole machine shell at one side of the radiator, and a capacitor assembly is welded on the capacitor plate; the air inlet and the air outlet of the ventilation air duct are respectively arranged at two ends of the lower layer of the inner cavity so as to form a ventilation path penetrating through the lower layer of the inner cavity. The beneficial effects are that: by reasonably distributing the whole structure, the product is highly integrated, the volume of the whole frequency converter is greatly reduced, the assembly difficulty is reduced, and the installation is more convenient; meanwhile, the driving efficiency is improved, and the stability and reliability of the product are improved.
Description
Technical Field
The utility model relates to the technical field of frequency converters, in particular to a complete machine structure applied to a medium-power frequency converter.
Background
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 can be roughly divided into several constituent units: rectifying (alternating current to direct current), filtering, inverting (direct current to alternating current), braking and braking units, driving units, detecting units, micro-processing units and the like.
The conventional frequency converter is generally formed by assembling a plurality of circuit boards and circuit structural units. Because the circuits and the elements of the units are simply assembled together directly and a heat dissipation space is required to be reserved, the whole frequency converter is large and heavy; in addition, the circuits are scattered, the integration level is not high, and the reliability is low; meanwhile, the existing circuit boards are different in size, the wire harnesses are more and more complex, the attractiveness is insufficient, and the safety is still to be improved.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a complete machine structure applied to a medium-power frequency converter.
The technical problems solved by the utility model can be realized by adopting the following technical scheme:
a complete machine structure applied to a medium power frequency converter comprises:
the power supply device comprises a complete machine shell, wherein an inner cavity is formed in the complete machine shell, the inner cavity comprises an inner cavity middle layer and an inner cavity lower layer, the inner cavity middle layer is provided with a reserved space for placing a frequency converter module and a power supply module, and a starting resistor is placed below the frequency converter module;
the radiator is arranged in the lower layer of the inner cavity and is fixedly connected with the frequency converter module and the starting resistor in the middle layer of the inner cavity through screws;
the capacitor plate is fixedly arranged on the whole machine shell at one side of the radiator, and a capacitor assembly is welded on the capacitor plate;
the air inlet and the air outlet of the ventilation air duct are respectively arranged at two ends of the lower layer of the inner cavity so as to form a ventilation path penetrating through the lower layer of the inner cavity.
Preferably, the surface of the radiator is provided with a uniformly distributed heat-conducting silicone grease layer.
Preferably, a reserved screw hole is formed in the radiator, and the frequency converter module and the starting resistor are matched with the reserved screw hole through screws so as to be fixed on the radiator.
Preferably, the method further comprises: the inner cavity middle layer is separated from the inner cavity lower layer by the partition plate, and a through hole through which the screw can pass is formed in the partition plate.
Preferably, the air inlet of the ventilation air duct is provided with at least one air inlet fan, and the air outlet of the ventilation air duct is provided with at least one air outlet fan.
Preferably, the capacitor plate is provided with a plurality of placing grooves matched with the capacitor assembly in size, and the capacitor assembly is placed in the placing grooves.
Preferably, the frequency converter module comprises a plurality of device modules which are designed in a modularized mode, and the device modules are connected through copper bars respectively.
Preferably, a plastic-impregnated insulating layer is arranged on the surface of each copper bar.
Preferably, the whole machine shell comprises: a complete machine lower cover panel and a complete machine upper cover panel which are detachably connected; the upper cover panel of the whole machine is provided with a control panel window, and an operation control panel is embedded in the control panel window.
Preferably, the whole machine shell is also provided with a through hole for the wiring to pass through.
The technical scheme of the utility model has the advantages that:
according to the utility model, through reasonable layout of the whole structure, the product is highly integrated, the volume of the whole frequency converter is greatly reduced, the assembly difficulty is reduced, and the installation is more convenient; meanwhile, the driving efficiency is improved, and the stability and reliability of the product are improved.
Drawings
Fig. 1 is an overall schematic diagram of a complete machine structure applied to a medium power frequency converter in a preferred embodiment of the present utility model;
FIG. 2 is a schematic view showing a structure of a middle layer of the inner cavity, which is embodied at one side of the middle layer of the inner cavity near the lower layer of the inner cavity, according to the preferred embodiment of the present utility model;
FIG. 3 is a schematic view showing a structure of the middle layer of the inner cavity, which is far from the lower layer of the inner cavity, according to the preferred embodiment of the utility model.
Reference numerals:
1. a complete machine shell; 2. an inner cavity intermediate layer; 3. a capacitive plate; 4. starting a resistor placement position; 5. the frequency converter module is placed at a position; 6. the power module is placed at a position; 7. inputting three-phase electric copper bars; 8. a power terminal carrier plate; 9. direct current high voltage copper bar; 10. outputting a three-phase electric copper bar; 11. a power connection terminal; 12. a top cover panel of the whole machine; 13. a through hole; 14. a heat radiation fan; 15. a control panel window; 16. and a lower cover panel of the whole machine.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.
The utility model is further described below with reference to the drawings and specific examples, which are not intended to be limiting.
Referring to fig. 1-3, in a preferred embodiment of the present utility model, based on the above-mentioned problems existing in the prior art, a complete machine structure for a medium power frequency converter is now provided, which includes:
the power supply device comprises a whole machine shell 1, wherein an inner cavity is formed in the whole machine shell 1, the inner cavity comprises an inner cavity middle layer 2 and an inner cavity lower layer, the inner cavity middle layer 2 is provided with a reserved space for placing a frequency converter module and a power supply module, and a starting resistor is placed below the frequency converter module;
the radiator is arranged in the lower layer of the inner cavity and is fixedly connected with the frequency converter module and the starting resistor in the middle layer 2 of the inner cavity through screws;
the capacitor plate 3 is fixedly arranged on the whole machine shell 1 at one side of the radiator, and a capacitor assembly is welded on the capacitor plate 3;
the air inlet and the air outlet of the ventilation air duct are respectively arranged at two ends of the lower layer of the inner cavity so as to form a ventilation path penetrating through the lower layer of the inner cavity.
As a preferred embodiment, the surface of the heat sink is provided with a uniformly distributed layer of thermally conductive silicone grease.
As a preferred embodiment, the radiator is provided with a reserved screw hole, and the frequency converter module and the starting resistor are matched with the reserved screw hole through screws so as to be fixed on the radiator.
Specifically, in this embodiment, the radiator is made of aluminum with excellent heat dissipation performance, and a screw hole is reserved at a specific position on the upper surface of the radiator to fix the radiator to the inner cavity middle layer 2 of the chassis of the complete machine; and fixing the corresponding module on the radiator.
As a preferred embodiment, the method further comprises: the inner cavity middle layer 2 and the inner cavity lower layer are separated by a partition plate, and a through hole through which a screw can pass is also formed in the partition plate.
Further, ventilation windows can be further formed in the partition plates and are correspondingly arranged at the placement positions of the frequency converter module, the power supply module and the starting resistor, the through holes are distributed around each ventilation window, and the ventilation windows are installed on screw holes at specific positions of the radiator through screws penetrating through the through holes so as to fix the frequency converter module, the power supply module and the starting resistor.
As a preferred embodiment, the air inlet of the ventilation duct is provided with at least one air inlet fan, and the air outlet of the ventilation duct is provided with at least one air outlet fan.
Further, the air inlet fan and the air outlet fan may be one or more, preferably two. The air inlet fan and the air outlet fan adopt 0.4A direct-current large-air-volume cooling fans 14.
As a preferred embodiment, the capacitive plate 3 is provided with a plurality of placing grooves matched with the size of the capacitive component, and the capacitive component is placed in the placing grooves.
Specifically, in this embodiment, the size of the placement groove is specially made according to the placed capacitor assembly, so as to reduce the gap, and be favorable to the complete air leakage of the air duct. Further, the capacitor assembly is a high-voltage filter capacitor, and preferably 8 capacitor assemblies are provided.
In a preferred embodiment, the frequency converter module comprises a plurality of device modules which are designed in a modularized manner, and the device modules are connected through copper bars respectively.
Specifically, the frequency converter module may include: the three-phase input end, the rectifying module, the IGBT module and the three-phase output end; the three-phase input end is connected with three power wiring terminals 11 on a power terminal carrier plate 8 through 3 input three-phase electric copper bars 7 so as to be connected with input three-phase alternating current; the three-phase input end is connected with the rectifying module, the output of the rectifying module is connected with the input of the capacitor plate 3 through two direct-current high-voltage copper bars 9, the output of the capacitor plate 3 is connected with the IGBT module through two direct-current high-voltage copper bars 9, the IGBT module is connected with the three-phase output end, and the three-phase output end is connected with the other three power wiring terminals 11 on the power terminal carrier plate 8 through 3 output three-phase electric copper bars 10 respectively so as to be connected with output three-phase alternating current.
As a preferred embodiment, the surface of each copper bar is provided with a plastic-impregnated insulating layer.
Specifically, in this embodiment, the copper bars are all made of pure copper, and the outer surfaces of the copper bars are insulated by using a plastic dipping process.
As a preferred embodiment, the whole machine housing 1 includes: a lower cover panel 16 and an upper cover panel 12 of the whole machine which are detachably connected; the cover panel 12 of the whole machine is provided with a control panel window 15, and an operation control panel is embedded in the control panel window 15.
As a preferred embodiment, the complete machine housing 1 is further provided with a through hole 13 through which the wiring can pass.
Further, the case of the whole machine is divided into a whole machine shell 1 and an inner cavity, the inner cavity is divided into an inner cavity middle layer 2 and an inner cavity lower layer sandwich structure, screw holes are reserved at specific positions of the whole machine shell 1, and a frequency converter module placing position 5, a power supply module placing position 6 and a starting resistor placing position 4 are reserved in the inner cavity middle layer 2.
Furthermore, the frequency converter module can adopt a super-integrated module frequency converter series module, and a rectifying circuit unit, an IGBT chip, an IBGT driving circuit and a necessary functional circuit of the frequency converter are integrated in the super-integrated module frequency converter series module; the power module is integrated with a DC-DC switching power supply and a fan control circuit, so as to convert the rectified high-voltage direct current into low-voltage direct current, and supply power to the driving circuit, the control main board and the cooling fan 14.
It should be noted that the frequency converter module and the power module in the present application are conventional frequency converter modules and power modules, for example, super-integrated module frequency converter series modules and power modules manufactured by Hangzhou Tai microelectronic limited are selected, and the implementation principle is the conventional common general knowledge, and no description is repeated here.
In the above preferred embodiment, the technical solution of the present utility model mainly includes a heat dissipation function portion and a circuit connection portion;
the heat dissipation function part specifically comprises: a radiator is arranged at the lower layer of the inner cavity of the whole machine shell 1 and is fixed on the inner cavity middle layer 2 through screws; the middle layer 2 of the inner cavity is hollowed to leave a position for placing the frequency converter module and the power supply module, the surface of the radiator is uniformly smeared with heat conduction silicone grease, and then the frequency converter module is fixed on the radiator through screws; the starting resistor is placed at a suspended position below the frequency converter module and is fixed on the radiator through a screw; the front end of the radiator is provided with 8 high-voltage filter capacitors, the 8 high-voltage filter capacitors are welded on the capacitor plate 3, and the capacitor plate 3 is fixed on the inner wall of the whole machine shell 1 through screws; the front end of the high-voltage filter capacitor is provided with 2 air inlet fans, the rear end of the radiator is provided with two air outlet fans, and a smooth ventilation air duct is formed at the lower layer of the inner cavity so as to release heat on the high-voltage filter capacitor and the radiator.
The circuit connection part is specifically: the three-phase input end and the three-phase output end of the frequency converter module are connected into the input three-phase alternating current and the output three-phase alternating current through 6 three-phase electric copper bars, one end of each three-phase electric copper bar is fixed on a power wiring terminal 11 on a power terminal carrier plate 8, and the other end of each three-phase electric copper bar is connected with corresponding terminals at the three-phase input end and the three-phase output end of the frequency converter module through screws of the model M6. The input three-phase alternating current is rectified by a rectification module in the frequency converter module and then outputs direct-current high voltage, the direct-current high voltage output by the rectification module is led out to the capacitor plate 3 by using two direct-current high-voltage copper bars 9, and the output of the capacitor plate 3 is connected with the positive terminal and the negative terminal of the IGBT module by the two direct-current high-voltage copper bars 9.
All the copper bars are insulated by using a plastic dipping process. The cover panel 12 on the whole machine is divided into two pieces, comprising an upper cover plate and a lower cover plate, wherein a control panel window 15 is reserved on the upper cover plate, and an operation control panel can be embedded, so that the operation of a customer is facilitated. The side surface of the lower end of the whole machine is provided with a through hole 13 through which wiring can pass, and the through hole is used as a wiring access, and the screw can be screwed by opening the lower cover plate.
The technical scheme has the advantages that: according to the utility model, through reasonable layout of the whole structure, high integration of products is realized, the assembly rate of the whole frequency converter is improved, the installation difficulty of customers is reduced, the safety is improved, the error rate is reduced, and the stability and the reliability of the products are also greatly improved; meanwhile, the volume of the whole frequency converter is greatly reduced, the resource cost and time are saved from the aspects of manpower, material resources and the like, and the frequency converter is attractive and neat and is convenient to transport and store; the assembly difficulty is reduced, and the installation is more convenient.
The foregoing description is only illustrative of the preferred embodiments of the present utility model and is not to be construed as limiting the scope of the utility model, and it will be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and drawings, and are intended to be included within the scope of the present utility model.
Claims (10)
1. The utility model provides a be applied to complete machine structure of medium power frequency converter which characterized in that includes:
the power supply device comprises a complete machine shell, wherein an inner cavity is formed in the complete machine shell, the inner cavity comprises an inner cavity middle layer and an inner cavity lower layer, the inner cavity middle layer is provided with a reserved space for placing a frequency converter module and a power supply module, and a starting resistor is placed below the frequency converter module;
the radiator is arranged in the lower layer of the inner cavity and is fixedly connected with the frequency converter module and the starting resistor in the middle layer of the inner cavity through screws;
the capacitor plate is fixedly arranged on the whole machine shell at one side of the radiator, and a capacitor assembly is welded on the capacitor plate;
the air inlet and the air outlet of the ventilation air duct are respectively arranged at two ends of the lower layer of the inner cavity so as to form a ventilation path penetrating through the lower layer of the inner cavity.
2. The complete machine structure applied to a medium power frequency converter according to claim 1, wherein a heat conduction silicone grease layer which is uniformly distributed is arranged on the surface of the radiator.
3. The complete machine structure applied to a medium-power frequency converter according to claim 1, wherein a reserved screw hole is formed in the radiator, and the frequency converter module and the starting resistor are matched with the reserved screw hole through screws so as to be fixed on the radiator.
4. The complete machine structure applied to a medium power frequency converter according to claim 1, further comprising: the inner cavity middle layer is separated from the inner cavity lower layer by the partition plate, and a through hole through which the screw can pass is formed in the partition plate.
5. The complete machine structure applied to a medium power frequency converter according to claim 1, wherein an air inlet of the ventilation air duct is provided with at least one air inlet fan, and an air outlet of the ventilation air duct is provided with at least one air outlet fan.
6. The complete machine structure applied to a medium power frequency converter according to claim 1, wherein a plurality of placing grooves matched with the size of the capacitor assembly are formed in the capacitor plate, and the capacitor assembly is placed in the placing grooves.
7. The complete machine structure applied to a medium power frequency converter according to claim 1, wherein the frequency converter module comprises a plurality of device modules which are modularly designed and are connected through copper bars respectively.
8. The complete machine structure applied to a medium power frequency converter according to claim 7, wherein a plastic-impregnated insulating layer is arranged on the surface of each copper bar.
9. The complete machine structure applied to a medium power frequency converter according to claim 1, wherein the complete machine housing comprises: a complete machine lower cover panel and a complete machine upper cover panel which are detachably connected; the upper cover panel of the whole machine is provided with a control panel window, and an operation control panel is embedded in the control panel window.
10. The complete machine structure applied to the medium power frequency converter according to claim 1, wherein a through hole through which wiring can pass is further formed in the complete machine shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223333709.2U CN219372315U (en) | 2022-12-13 | 2022-12-13 | Complete machine structure applied to medium-power frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223333709.2U CN219372315U (en) | 2022-12-13 | 2022-12-13 | Complete machine structure applied to medium-power frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219372315U true CN219372315U (en) | 2023-07-18 |
Family
ID=87116348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223333709.2U Active CN219372315U (en) | 2022-12-13 | 2022-12-13 | Complete machine structure applied to medium-power frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219372315U (en) |
-
2022
- 2022-12-13 CN CN202223333709.2U patent/CN219372315U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A Whole Machine Structure Applied to Medium Power Inverter Granted publication date: 20230718 Pledgee: Hangzhou High-tech Financing Guarantee Co.,Ltd. Pledgor: Hangzhou Taixin Microelectronics Co.,Ltd. Registration number: Y2024330000053 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |