CN103701299B - A kind of converter - Google Patents
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- CN103701299B CN103701299B CN201310664650.1A CN201310664650A CN103701299B CN 103701299 B CN103701299 B CN 103701299B CN 201310664650 A CN201310664650 A CN 201310664650A CN 103701299 B CN103701299 B CN 103701299B
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Abstract
The invention discloses a kind of converter.This converter includes having the shell body of accommodation space, the partition wall being arranged in accommodation space and the circuit board being contained in accommodation space and multiple capacitor element, the accommodation space of shell body is separated into the first accommodation chamber for holding circuit board and multiple capacitor element by partition wall, also include radiating subassembly, radiating subassembly is contained in the first accommodation chamber, multiple capacitor elements are contained in inside radiating subassembly, and circuit board is positioned at the outside of radiating subassembly；Shell body offers the first air inlet and the first air outlet, first air inlet is opened in shell body and first and holds on the position that chamber is corresponding, one end of radiating subassembly is connected with the first air inlet, the other end of radiating subassembly is in communication with the outside by the first air outlet, being formed with the first heat dissipation wind channel in radiating subassembly along the first air intake of air-flow and air-out path, described first heat dissipation wind channel is separated by radiating subassembly and circuit board.
Description
Technical field
The present invention relates to a kind of converter, particularly relate to a kind of converter with good heat radiation and sealing function.
Background technology
Converter is power supply apparatus conventional in prior art.Containing substantial amounts of power device in converter, such as bus capacitor, rectifier bridge, wave filter etc..When converter is carried out structural design, to consider the impact between each device, the ventilation and heat performance of system, the reasonable compactedness of structure based on the performance of each power device self and the factors such as maintenance is installed, thus obtaining is can the best converter of index.
But, the electronic device of various converters of the prior art generally includes the maximum capacitor element of caloric value and the relatively small circuit board of caloric value.Generally adopt air cooling way, and a large amount of dusts that air cooling way brings can to electronic device, especially circuit board, causes the pressure reduction of burn into, condensation, punctures the defects such as spark phenomenon, finally causes complete machine to lose efficacy.This problem perplexs the performance of this type of frequency converter product always, especially in the applied environment of the environment rather harsh such as such as iron and steel, chemical industry, intermetallic composite coating.
Summary of the invention
It is an object of the invention to, adopt a large amount of dusts of bringing of air cooling way circuit board to cause the pressure reduction of burn into, condensation, punctures the defects such as spark phenomenon for the converter existed in prior art, the present invention provides a kind of converter that can be separated by the heat dissipation wind channel of circuit board Yu converter.
The present invention provides a kind of converter, including there is the shell body of accommodation space and being arranged on the partition wall in described accommodation space and be contained in the circuit board in described accommodation space and multiple capacitor element, described accommodation space is separated into the first accommodation chamber for holding circuit board and multiple capacitor element and is used for the second accommodation chamber dispelled the heat by described partition wall, described converter also includes radiating subassembly, described radiating subassembly is contained in described first and holds in chamber, the plurality of capacitor element is contained in inside described radiating subassembly, the outside of described radiating subassembly is located at by described circuit board；Described shell body offers the first air inlet and the first air outlet, described first air inlet is opened in described shell body and holds on the position that chamber is corresponding with described first, one end of described radiating subassembly is connected with described first air inlet, the other end of described radiating subassembly is in communication with the outside by described first air outlet, being formed with the first heat dissipation wind channel in described radiating subassembly along the first air intake of air-flow and air-out path, described first heat dissipation wind channel is separated by described radiating subassembly and described circuit board；The heat of the plurality of capacitor element and circuit board is discharged from described first air outlet through described first heat dissipation wind channel under the effect of air-flow.
In above-mentioned converter, hold with described second and the shell body that chamber is corresponding offers the second air inlet and the second air outlet, described second accommodation chamber is formed with the second heat dissipation wind channel for discharging described converter heat on second air intake and air-out path of air-flow.
In above-mentioned converter, described radiating subassembly is heat dissipation box, described heat dissipation box includes upper cartridge body and the lower box body of fastening mutually, described vent it is formed with between described upper cartridge body and described lower box body, offering described first air inlet on the position that described shell body is corresponding with described vent, described vent docks with described first air inlet and connects.
In above-mentioned converter, the bottom of described heat dissipation box offers the first opening, described first opening and described vent are centrosymmetric setting, and described partition wall offers the second opening, and described first opening is connected with described second heat dissipation wind channel by described second opening；Described second air outlet is used as described first air outlet, and described first heat dissipation wind channel is connected with described second heat dissipation wind channel.
In above-mentioned converter, described converter also includes air guide member, and described air guide member is connected between described heat dissipation box and described partition wall, is used for making described first opening and described second opening in communication.
In above-mentioned converter, offering air-guiding hole in described air guide member, one end of described air-guiding hole and described first open butt joint also connect, and the other end of described air-guiding hole and described second open butt joint also connect.
In above-mentioned converter, described circuit board includes the first circuit board and the second circuit board that lay respectively at the opposite sides of the plurality of capacity cell；Described converter also includes the first radiator and the second radiator, and described first radiator and the second radiator are contained in described second to be held in chamber and is sequentially distributed on described second heat dissipation wind channel along described second air intake and air-out path；Described first radiator and described first circuit board fit to realize the heat radiation to described first circuit board；Described second radiator and described second circuit board fit to realize the heat radiation to described second circuit board.
In above-mentioned converter, described radiating subassembly is hot channel, and described first air outlet is opened in and holds on the shell body that chamber is corresponding with described first, and is oppositely arranged with described first air inlet；One end of described hot channel is docked with described first air inlet and is connected, and the other end of described hot channel docks with described first air outlet and connects.
In above-mentioned converter, described radiating subassembly adopts metal material to make.
Enforcement the beneficial effects of the present invention is: by shell body is separated into two independent spaces in the present invention, thus being separated by the second heat dissipation wind channel of circuit board, capacitor element and converter.Simultaneously, again radiating subassembly is set in the space of accommodation circuit board and capacitor element, capacitor element is contained in radiating subassembly, radiating subassembly is made to be connected with air inlet and air outlet respectively, thus forming the first heat dissipation wind channel again in the inside of radiating subassembly, and then by this radiating subassembly, circuit board and first heat dissipation wind channel the first heat dissipation wind channel are separated, circuit board and capacitor element are served the effect of heat radiation by the first heat dissipation wind channel simultaneously.This class formation can make circuit board it can be avoided that it is caused the pressure reduction of burn into, condensation, punctures the defects such as spark phenomenon by a large amount of dusts brought because of air cooling mode.
Additionally, due to heat is finally discharged also by the second heat dissipation wind channel by the first heat dissipation wind channel formed in radiating subassembly, thus making two heat dissipation wind channels share one group of blower fan group and complete heat radiation, thus reducing the usage quantity of blower fan, reducing the manufacturing cost of converter.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the three-dimensional structure diagram of the radiator in preferred embodiment provided by the invention；
Fig. 2 is the sectional view in Fig. 1 along line A-A；
Fig. 3 is the front view of Fig. 2；
Fig. 4 is the explosive view of Fig. 1；
Fig. 5 is the structural representation of partition wall in Fig. 1.
Detailed description of the invention
In order to overcome a large amount of dusts that converter in prior art adopts air cooling way to bring electronic device to cause the pressure reduction of burn into, condensation, punctures the defects such as spark phenomenon, the present invention provides a kind of frequency changer that can the circuit board in electronic device and heat dissipation wind channel be separated.By shell body being separated into two independent spaces in the present invention, thus the second heat dissipation wind channel of circuit board, capacitor element and converter is separated.Simultaneously, again radiating subassembly is set in the space of accommodation circuit board and capacitor element, capacitor element is contained in radiating subassembly, radiating subassembly is made to be connected with air inlet and air outlet respectively, thus forming the first heat dissipation wind channel again in the inside of radiating subassembly, and then by this radiating subassembly, circuit board and the first heat dissipation wind channel are separated, circuit board and capacitor element are served the effect of heat radiation by the first heat dissipation wind channel simultaneously.
Referring to figs. 1 to Fig. 5, the converter of preferred embodiment provided by the invention.This converter includes having the shell body 60 of accommodation space, the partition wall 604 being arranged in the accommodation space of described shell body 60 and the circuit board (non-label) being contained in this accommodation space and multiple capacitor element 20.Described partition wall 604 is for the first accommodation chamber 601 being separated into by the accommodation space of described shell body 60 for holding circuit board and multiple capacitor element 20 and is used for the second accommodation chamber 602 dispelled the heat.This converter also includes radiating subassembly (non-label), and described radiating subassembly is contained in described first to be held in chamber 601.The plurality of capacitor element 20 is contained in inside described radiating subassembly, and the outside of radiating subassembly is located at by described circuit board.Offering the first air inlet 607 and the first air outlet on described shell body 60, described first air inlet 607 is opened in described shell body 60 to be held on the position that chamber 601 is corresponding with described first.One end of described radiating subassembly is connected with described first air inlet 607, and the other end of described radiating subassembly is in communication with the outside by described first air outlet.Being formed with the first heat dissipation wind channel along the first air intake of air-flow and air-out path a in radiating subassembly, this first heat dissipation wind channel is separated by radiating subassembly and circuit board.The heat of the plurality of capacitor element 20 and circuit board is discharged from described first air outlet through the first heat dissipation wind channel under the effect of air-flow.In the present embodiment, circuit board includes second circuit board 50 and first circuit board 40.Second circuit board 50, first circuit board 40 are contained in the first accommodation chamber 601 and fix with partition wall 604 all threadably being connected.In the present embodiment, second circuit board 50 and first circuit board 40 lay respectively between the both sides of multiple capacitor element 20.
In the present embodiment, shell body 60 includes covering the upper casing (not shown) being located on partition wall and the lower casing (non-label) that is made up of the first side wall the 606, second sidewall 605 and underframe 603 forms.Wherein, the first side wall 606 and the second sidewall 605 are for being oppositely arranged.Partition wall 604 is as the mesochite of shell body 60.Partition wall 604 can be injection molded by plastics or metal material, it is possible to is spliced by polylith metallic plate or plastic plate.The first side wall the 606, second sidewall 605 and underframe 603 in lower casing enclose described second and hold chamber 602.The first side wall 606 and the second sidewall 605 lay respectively at the opposite end of lower casing, offer the second air inlet 608 on the first side wall 606, and the second sidewall 605 offers the second air outlet (non-label).Hold in chamber 602 second and be formed with described second heat dissipation wind channel along the second air intake of the gas flowed to the second air outlet from the second air inlet 608 and air-out path b.In order to increase the flowing velocity of the second heat dissipation wind channel apoplexy, it is achieved dispel the heat rapidly, then install blower fan group 95 at the second air outlet place to realize quick air flowing in the second heat dissipation wind channel.In the present embodiment, with reference to Fig. 5, partition wall 604 offers the position corresponding with the second opening 609 that the second heat dissipation wind channel is connected and first circuit board 40 and offers the first through hole 611 and the position corresponding with second circuit board 50 offers the second through hole 612.The area of this first through hole 611 and the second through hole 612 and shape respectively with first circuit board 40, second circuit board 50 bottom area and shape suitable.In the present embodiment, the effect of partition wall 604 is in that to make the second heat dissipation wind channel separate with multiple capacitor elements 20 and circuit board, and this class formation can avoid a large amount of dusts that air cooling way brings the circuit board of converter to cause the pressure reduction of burn into, condensation, punctures the defects such as spark phenomenon.
With reference to Fig. 1-4, in the present embodiment, this radiating subassembly is heat dissipation box 10.This heat dissipation box 10 is contained in the first accommodation chamber 601, and namely circuit board is positioned at the outside of heat dissipation box 10 between first circuit board 40 and second circuit board 50.Described heat dissipation box 10 is substantially in rectangular shape, including upper cartridge body 101 and lower box body 102, this upper cartridge body 101 and lower box body 102 fasten and enclose the receiving space with the first opening 103 and vent (non-label) threadably mutually, are used for housing the plurality of capacitor element 20.This first opening 103 is opened in the bottom of lower box body 102.Vent is formed between upper cartridge body 101 and lower box body 102, and this first opening 103 and this vent are centrosymmetric setting.The side and the opposite side relative with this side that are formed with vent in heat dissipation box 10 are fixedly connected in the two lateral walls of shell body 60 in modes such as threaded, welding respectively, or, heat dissipation box 10 is formed the side of vent and the opposite side relative with this side and is fixedly connected in the two lateral walls of shell body 60 with welding, the mode such as threaded respectively through support member (non-label).
Wherein, corresponding with the vent of heat dissipation box 10 in shell body 60 position offers the first air inlet 607.This first air inlet 607 docks with vent and connects, and the sidewall being namely formed with vent side and shell body 60 in heat dissipation box 10 fits tightly, in order to make the cold air in surrounding be entered in heat dissipation box 10 by the first air inlet 607 to realize dispelling the heat.This first opening 103 is connected with the second heat dissipation wind channel by the second opening 609 offered on partition wall 604, therefore the second air outlet of the second heat dissipation wind channel also serves as the first air outlet.The receiving space of heat dissipation box 10 is formed with the first heat dissipation wind channel (non-label) along the first air intake of the air-flow flowed to the first air outlet from the first air inlet 607 and air-out path a.This first heat dissipation wind channel is formed in the receiving space of heat dissipation box 10, separates with the circuit board outside heat dissipation box 10.This class formation can avoid a large amount of dusts that air cooling way brings the circuit board of converter to cause the pressure reduction of burn into, condensation, punctures the defects such as spark phenomenon.The plurality of capacitor element 20 is positioned on the first heat dissipation wind channel, heat in final heat dissipation box 10 is in the first heat dissipation wind channel stream to the second heat dissipation wind channel, final by the second air outlet discharge, thus realizing the heat radiation to multiple capacitor elements 20, in the present embodiment, first heat dissipation wind channel and the second heat dissipation wind channel all share same air outlet and be arranged on air outlet blower fan group 95 to realize quick heat radiation, it is also possible to reduce blower fan usage quantity, reduce converter manufacturing cost.
In the present embodiment, heat dissipation box 10 preferably adopts metal material to make, this class formation can make the heat of the first circuit board 40 in the first accommodation chamber 601 and second circuit board 50 realize heat exchange under the cold and hot convection current of air and thermal-radiating dual function and between heat dissipation box 10 box body, heat after heat exchange is brought in the first heat dissipation wind channel by heat dissipation box 10 box body, discharge then through the second heat dissipation wind channel, thus realizing the first heat radiation holding other electronic devices in chamber 601 and reducing the temperature in the first accommodation chamber 601.
In the present embodiment, upper cartridge body 101 and lower box body 102 are preferably designed to sheet metal component structure.The top of upper cartridge body 101 is further opened with and multiple capacitor elements 20 first extending port 104 one to one, the plurality of first extending port 104 stretches out this heat dissipation box 10 for the electrode (non-label) for capacitor element 20, in order to avoid electrode 201 is polluted by the dust entered from the first air inlet 607 during heat radiation.In the present embodiment, in order to realize sealing and the effect of isolation, it is advantageous to arrange rubber isolator between electrode 201 and the first extending port 104.The diapire (non-label) of lower box body 102 offers and the plurality of capacitor element 20 second extending port 1022 one to one.This each capacitor element 20 stretches out heat dissipation box 10 by the second extending port 1022 and the upper surface with partition wall 604 offsets.In order to make to realize isolation between capacitor element 20 and heat dissipation box 10 and seal, then separator 30 is set between the second extending port 1022 that each capacitor element 20 is corresponding, separator 30, in hat shape, has accommodation space, and the bottom of capacitor element 20 is contained in this accommodation space.Separator 30 preferably adopts elastomeric material to make, and this just can by the shrinkage characteristics of rubber, and be locked capacitor element 20, by isolated to capacitor element 20 and the first accommodation chamber 601.
Also consulting Fig. 2 and Fig. 3 with reference to Fig. 4, in the present embodiment, converter also includes for the heat in heat dissipation box 10 guides to the second heat dissipation wind channel the air guide member 15 to discharge.This air guide member 15 is substantially the cuboid pipeline of interior hollow.The interior middle vacancy of this air guide member 15 is air-guiding hole 151.One end of this air guide member 15 is connected on the first opening 103 of heat dissipation box 10, fixes with heat dissipation box 10 threadably and is connected, and makes one end of air-guiding hole 151 dock with this first opening 103 and connect.The other end of this air guide member 15 abuts to the second opening 609 of partition wall 604, fixes with partition wall 604 threadably and is connected, and makes the other end of air-guiding hole 151 and the second opening 609 dock and connect.This class formation can realize the wind-guiding function of air guide member 15, it is also possible to even if making the first opening 103 and the second opening 609 can also be interconnected when mutual dislocation.In the present embodiment, this air guide member 15 is it also will be understood that becoming is joined end to end successively by 4 sheet metal components to be formed, and 4 sheet metal components enclose this air-guiding hole 151.
Reference Fig. 4 also consults Fig. 2 and Fig. 3, and in the present embodiment, in order to strengthen the heat radiation to first circuit board 40 and second circuit board 50 further, converter also includes the first radiator 70 and the second radiator 90 being contained in the second accommodation chamber 602.First radiator 70 and the second radiator 90 are successively set on described second heat dissipation wind channel along described second air intake and air-out path b.First radiator 70 and the second radiator 90 are all substantially in cubic shaped, and the fin of the first radiator 70 and the second radiator 90 is along extending from the direction of second air inlet the 608 to the second air outlet.First radiator 70 and the second radiator 90 can by all enter copper, aluminum material make.First heater members 40 fits through the first through hole 611 on partition wall 604 and the first radiator 70, by conduction of heat by after incoming for heat the first radiator 70, blower fan group 95 convulsion is taken away by heat.Second heater members 50 is fitted by the second through hole 612 and the second radiator 90, by conduction of heat by after 90s for incoming for heat the second radiator, blower fan group 95 is taken away by heat.In the present embodiment, converter also includes the reactor 80 being contained in the second accommodation chamber 602, and reactor 80 and the first radiator 70 are set up in parallel and are parallel to each other.Reactor 80 is fixedly mounted on the diapire of lower casing threadably.The function of this reactor 80 and and other parts between annexation identical with prior art, therefore do not repeat them here.
The present invention also provides for the converter of another embodiment, and this embodiment is distinctive in that from previous embodiment: the position of this first air outlet is different, radiating subassembly adopts metal hot channel.In the present embodiment, the plurality of capacitor element 20 is contained in this hot channel.One end of this hot channel is connected with the first air inlet 607, and the other end of this hot channel is connected with the external world by the first air outlet.In the present embodiment, the first air outlet is arranged on and holds on the shell body 60 that chamber 601 is corresponding with first, and is correspondingly arranged with the first air inlet 607.In this class formation, this hot channel defines heat dissipation channel, the circuit board of this heat dissipation channel and hot channel both sides separates, and circuit board will not be caused the pressure reduction of burn into, condensation, puncture the defects such as spark phenomenon by a large amount of dusts therefore brought during wind-cooling heat dissipating.The plurality of capacitor element 20 and the annexation of this hot channel are identical with previous embodiment, do not repeat them here.All the other parts of this converter and annexation each other are all identical with previous embodiment, do not repeat them here.
In sum, converter provided by the invention can so that circuit board be it can be avoided that it is caused the pressure reduction of burn into, condensation, punctures the defects such as spark phenomenon by a large amount of dusts brought because of air cooling mode.In addition, heat is finally discharged by the heat dissipation channel owing to being formed in the first heat dissipation wind channel radiating subassembly also by the second heat dissipation wind channel, thus making two heat dissipation wind channels share one group of blower fan group and complete heat radiation, thus reducing the usage quantity of blower fan, reducing the manufacturing cost of converter
It should be appreciated that for those of ordinary skills, it is possible to improved according to the above description or converted, and all these are improved and convert the protection domain that all should belong to claims of the present invention.
Claims (6)
1. a converter, including the shell body (60) with accommodation space, it is arranged on the partition wall in described accommodation space (604) and is contained in the circuit board in described accommodation space and multiple capacitor element (20), described accommodation space is separated into the first accommodation chamber (601) for holding described circuit board and multiple capacitor element (20) and the second accommodation chamber (602) for dispelling the heat by described partition wall (604), it is characterized in that, described converter also includes radiating subassembly, described radiating subassembly is contained in described first and holds in chamber (601), the plurality of capacitor element (20) is contained in inside described radiating subassembly, the outside of described radiating subassembly is located at by described circuit board；Described shell body (60) offers the first air inlet (607) and the first air outlet, described first air inlet (607) is opened in described shell body (60) and holds on the position that chamber (601) is corresponding with described first, one end of described radiating subassembly is connected with described first air inlet (607), the other end of described radiating subassembly is connected with described first air outlet, described radiating subassembly is formed with the first heat dissipation wind channel along the first air intake of air-flow and air-out path (a), described first heat dissipation wind channel is separated by described radiating subassembly and described circuit board；The heat of the plurality of capacitor element (20) and circuit board is discharged from described first air outlet through described first heat dissipation wind channel under the effect of described air-flow；
Holding with described second, the shell body (60) that chamber (602) is corresponding offers the second air inlet (608) and the second air outlet, described second accommodation chamber (602) is formed with the second heat dissipation wind channel for discharging described converter heat on second air intake and air-out path (b) of air-flow；
Described radiating subassembly is heat dissipation box (10), described heat dissipation box (10) includes upper cartridge body (101) and the lower box body (102) of fastening mutually, it is formed with vent between described upper cartridge body (101) and described lower box body (102), offering described first air inlet (607) on the position that described shell body (60) is corresponding with described vent, described vent docks with described first air inlet (607) and connects；
The bottom of described heat dissipation box (10) offers the first opening (103), described first opening (103) and described vent are centrosymmetric setting, offering the second opening (609) on described partition wall (604), described first opening (103) is connected with described second heat dissipation wind channel by described second opening (609)；Described second air outlet is used as described first air outlet, and described first heat dissipation wind channel is connected with described second heat dissipation wind channel.
2. converter according to claim 1, it is characterized in that, described converter also includes air guide member (15), described air guide member (15) is connected between described heat dissipation box (10) and described partition wall (604), is used for making described first opening (103) be connected with described second opening (609).
3. converter according to claim 2, it is characterized in that, described air guide member (15) offers air-guiding hole (151), one end of described air-guiding hole (151) is docked with described first opening (103) and is connected, and the other end of described air-guiding hole (151) docks with described second opening (609) and connects.
4. converter according to claim 1, it is characterised in that described circuit board includes the first circuit board (40) and the second circuit board (50) that lay respectively at the opposite sides of described radiating subassembly；Described converter also includes the first radiator (70) and the second radiator (90), and described first radiator (70) and the second radiator (90) are contained in described second to be held in chamber (602) and is sequentially distributed on described second heat dissipation wind channel along described second air intake and air-out path (b)；Described first radiator (70) and described first circuit board (40) fit to realize the heat radiation to described first circuit board (40)；Described second radiator (90) and described second circuit board (50) fit to realize the heat radiation to described second circuit board (50).
5. converter according to claim 1, it is characterized in that, described radiating subassembly is hot channel, described first air outlet is opened in and holds on the shell body (60) that chamber (601) is corresponding with described first, and is oppositely arranged with described first air inlet (607)；One end of described hot channel is docked with described first air inlet (607) and is connected, and the other end of described hot channel docks with described first air outlet and connects.
6. the converter according to any one of claim 1-5, it is characterised in that described radiating subassembly adopts metal material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310664650.1A CN103701299B (en) | 2013-12-10 | 2013-12-10 | A kind of converter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310664650.1A CN103701299B (en) | 2013-12-10 | 2013-12-10 | A kind of converter |
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| Publication Number | Publication Date |
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| CN103701299A CN103701299A (en) | 2014-04-02 |
| CN103701299B true CN103701299B (en) | 2016-07-06 |
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| CN201310664650.1A Active CN103701299B (en) | 2013-12-10 | 2013-12-10 | A kind of converter |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104125758B (en) * | 2014-07-23 | 2017-05-17 | 南车株洲电力机车研究所有限公司 | Radiating cabinet for frequency converter |
| CN104901514B (en) * | 2015-05-16 | 2017-03-15 | 厦门科华恒盛股份有限公司 | A kind of high-density power modular structure |
| CN105517412B (en) * | 2015-11-26 | 2017-12-26 | 深圳市英威腾电气股份有限公司 | A kind of frequency converter |
| CN105873420B (en) * | 2016-05-27 | 2018-09-28 | 华远电气股份有限公司 | A kind of independent ventiduct structure of frequency converter |
| CN112701877B (en) * | 2019-10-22 | 2022-05-06 | 中车株洲电力机车研究所有限公司 | Converter module and converter |
| CN113725967B (en) * | 2021-08-26 | 2024-05-28 | 维沃移动通信有限公司 | Wireless charger |
| CN115101905B (en) * | 2022-06-29 | 2023-07-14 | 北京中科飞鸿科技股份有限公司 | Filter assembly with multichannel low loss |
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| FI120128B (en) * | 2005-01-20 | 2009-06-30 | Abb Oy | Cooling device for an electronic device and method |
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| CN2819623Y (en) * | 2005-07-21 | 2006-09-20 | 桐乡市三精自动化科技有限公司 | Frequency-variable speed adjuster of separated cooled air flue |
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| CN103701299A (en) | 2014-04-02 |
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