CN214507757U - VVVF heat dissipation system - Google Patents
VVVF heat dissipation system Download PDFInfo
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- CN214507757U CN214507757U CN202120856851.1U CN202120856851U CN214507757U CN 214507757 U CN214507757 U CN 214507757U CN 202120856851 U CN202120856851 U CN 202120856851U CN 214507757 U CN214507757 U CN 214507757U
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 45
- 238000009423 ventilation Methods 0.000 claims abstract description 100
- 238000009434 installation Methods 0.000 claims abstract description 53
- 238000001816 cooling Methods 0.000 claims abstract description 36
- 239000000428 dust Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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Abstract
The application relates to a VVVF heat dissipation system which comprises a first module, a second module, an auxiliary heat dissipation module and a reactor installation module which are sequentially arranged, wherein the first module comprises a first installation cabin and a first ventilation chamber arranged at the bottom of the first installation cabin, the second module comprises a second installation cabin and a second ventilation chamber arranged at the bottom of the second installation cabin, the first ventilation chamber is communicated with the second ventilation chamber, and the outer side wall of the first ventilation chamber is provided with a through air inlet; the auxiliary heat dissipation module comprises a heat dissipation cabin and a fan arranged in the heat dissipation cabin, and the heat dissipation cabin is communicated with the second ventilation chamber; the reactor installation module comprises an electrical cabin, and the electrical cabin is used for installing a reactor matched with the VVVF for use; the heat dissipation cabin is communicated with the electric appliance cabin, and a through air outlet is formed in the bottom wall of the electric appliance cabin. The application provides a VVVF cooling system can greatly improve the cooling rate that VVVF pulls the inverter.
Description
Technical Field
The application relates to the field of subway traffic automatic control, in particular to a VVVF heat dissipation system.
Background
VVVF, an abbreviation for Variable Voltage and Variable Frequency, means: variable voltage and variable frequency, i.e. variable frequency governor systems. The VVVF controlled traction inverter is connected with the motor, and the purposes of keeping constant magnetic flux and controlling the rotating speed of the motor are achieved by simultaneously changing the frequency and the voltage.
The VVVF traction inverter is an electrical device for a subway vehicle, and functions to receive electrical energy from a dc power supply network and output three-phase ac power with variable voltage and frequency according to instructions to drive a traction motor of the vehicle.
The VVVF traction inverter generates a large amount of heat when operating, and there are two main heat dissipation methods: forced air cooling heat dissipation by using a fan and walking air generated by relative movement of air and the subway when the subway moves are utilized; in the traction inverter in the related art, a cooling chamber for the walking wind to enter is arranged at the bottom of the inverter, and the walking wind exchanges heat with the inverter when passing through the cooling chamber, so that the heat in the inverter is taken away; however, the cooling rate of the heat exchange method is slow, which is not favorable for rapidly cooling the VVVF traction inverter.
SUMMERY OF THE UTILITY MODEL
In order to improve the cooling speed of the VVVF traction inverter, the application provides a VVVF cooling system.
The VVVF heat dissipation system provided by the application adopts the following technical scheme:
the utility model provides a VVVF cooling system, is including the first module, second module, supplementary radiating module and the reactor installation module that set gradually, first module includes first installation cabin and sets up in the first ventilation room of first installation cabin bottom, the second module includes second installation cabin and sets up in the second ventilation room of second installation cabin bottom, first ventilation room communicates in the second ventilation room, the lateral wall of first ventilation room is equipped with the air intake that link up.
The auxiliary heat dissipation module comprises a heat dissipation cabin and a fan arranged in the heat dissipation cabin, and the heat dissipation cabin is communicated with the second ventilation chamber; the reactor installation module comprises an electrical cabin, and the electrical cabin is used for installing a reactor matched with VVVF for use; the air outlet of the fan is communicated with the electric appliance cabin, and the bottom wall of the electric appliance cabin is provided with a through air outlet.
By adopting the technical scheme, when the subway moves, the outside air and the subway move relatively to form walking air, and the walking air enters the first ventilation chamber from the air inlet, then sequentially passes through the second ventilation chamber, the heat dissipation cabin and the electric appliance cabin, and finally is discharged from the air outlet at the bottom of the electric appliance cabin; when the traveling wind flows, heat exchange is carried out between the traveling wind and the side walls of the passing cabins, so that heat generated when the VVVF traction inverter works is taken away, and the cooling speed of the traction inverter is increased.
In addition, the reactor in the electric appliance cabin is a main part for generating heat by the VVVF traction inverter, and the walking wind directly enters the electric appliance cabin after passing through the heat dissipation cabin and directly exchanges heat with the reactor, so that the heat in the electric appliance cabin can be taken away more quickly, and the cooling speed of the traction inverter is further improved.
Optionally, three exposed side walls of the first ventilation chamber are provided with air inlets, and each air inlet is provided with an air inlet grid plate in a matching manner.
By adopting the technical scheme, the three side walls of the first ventilation chamber, which are provided with the air inlets, can be used as channels for the walking air to enter the first ventilation chamber, and the air flow of the walking air entering the first ventilation chamber can be improved, so that more heat can be taken away by the walking air in unit time, and the cooling speed of the VVVF traction inverter is further improved; the air inlet grid plate is installed in the matching of the air inlet, so that the possibility that external garbage enters the first ventilation chamber from the air inlet when the subway moves at a high speed can be reduced.
Optionally, ventilation openings are arranged between the first installation cabin and the second installation cabin, between the second installation cabin and the heat dissipation cabin, and between the heat dissipation cabin and the electrical appliance cabin, and each ventilation opening is provided with an electric fan.
By adopting the technical scheme, after the walking wind enters the electric appliance cabin, the electric fans can guide the walking wind to sequentially pass through the ventilation openings between the electric appliance cabin and the heat dissipation cabin, the ventilation openings between the heat dissipation cabin and the second installation cabin and the ventilation openings between the second installation cabin and the first installation cabin, so that circulating air cooling is formed among the modules, and the cooling speed of the VVVF traction inverter can be further improved.
Optionally, the heat dissipation cabin comprises a third ventilation chamber communicated with the second ventilation chamber and circulation chambers respectively arranged at two sides of the third ventilation chamber, the fan is mounted on the third ventilation chamber, and the ventilation opening is arranged in the circulation chamber; the air outlet directions of the electric fans arranged in the two circulating chambers are different.
By adopting the technical scheme, after the traveling air sequentially passes through the second ventilation chamber, the third ventilation chamber and the electric appliance cabin, a part of the traveling air is discharged from the air outlet grid plate; and the other part of the walking wind enters the circulating chamber through the ventilation opening between the electric appliance cabin and one of the circulating chambers, then enters the other circulating chamber again after passing through the second installation cabin, and finally enters the electric appliance cabin again, so that the circulating air cooling is formed.
Optionally, a plurality of heat conducting fins are arranged inside the second air ventilation chamber, and a gap is reserved between every two adjacent heat conducting fins; each heat conducting fin penetrates through the second installation cabin.
By adopting the technical scheme, the heat in the second mounting chamber is transmitted to the heat-conducting fin, when the walking air enters the second ventilation chamber, the walking air passes through the outer side of the heat-conducting fin, the walking air directly exchanges heat with the heat-conducting fin to cool the heat-conducting fin, and the heat in the second mounting chamber is transmitted to the heat-conducting fin again, so that the cooling speed of the second mounting chamber is improved.
Optionally, each of the gaps faces the first ventilation chamber, and all the heat conducting fins are sleeved with a dust-proof net sleeve.
By adopting the technical scheme, the walking wind can better exchange heat with the heat-conducting fins through the gaps among the heat-conducting fins, so that the cooling speed in unit time is increased; the arrangement of the dustproof cloth is used for reducing the possibility that dust brought up by the traveling wind is attached to the heat conducting sheet, so that the possibility that the dust obstructs the heat exchange between the traveling wind and the heat conducting sheet is reduced.
Optionally, the dustproof net cover is an elastic dustproof net cover.
Through adopting foretell technical scheme, the walking wind-force that the subway that moves at a high speed formed is stronger, establishes the dust screen cover into elasticity dust screen cover, can improve the pliability of elasticity screen cover, reduces the cracked possibility of elasticity screen cover when the dust screen cover receives walking wind to strike, makes the elasticity screen cover have good life.
Optionally, each gap is right opposite to the side walls on two sides of the second ventilation chamber; each conducting strip is provided with a ventilation groove, and the ventilation grooves of the adjacent conducting strips are arranged in a staggered mode.
By adopting the technical scheme, the gaps are right opposite to the side walls on the two sides of the second ventilation chamber, so that the side surfaces of the heat-conducting fins are right opposite to the first ventilation chamber, and after walking air enters the second ventilation chamber through the first ventilation chamber, the walking air passes through the ventilation grooves of the heat-conducting fins and moves along the gaps of the adjacent heat-conducting fins; a labyrinth silencing channel is formed between the heat conducting fins, so that noise generated between the traveling wind and the heat conducting fins can be disturbed, and the effect of reducing the noise can be achieved.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the traveling wind directly enters the electric appliance cabin after passing through the heat dissipation cabin and directly exchanges heat with the reactor, so that the heat in the electric appliance cabin can be taken away more quickly, and the cooling speed of the traction inverter is increased;
2. after the traveling wind enters the electric appliance cabin, the electric fans arranged on the modules can enable the adjacent modules to form circulating air cooling, so that the cooling speed of the VVVF traction inverter can be further increased;
3. through setting up the conducting strip, walking wind directly takes place heat exchange with the conducting strip and makes the conducting strip cooling, and the heat in second installation cabin conveys to the conducting strip once more to the cooling speed in second installation cabin has been improved.
Drawings
FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present application;
FIG. 2 is a schematic view of the internal structure of embodiment 1 of the present application;
FIG. 3 is a half sectional view of a first module and a second module in embodiment 1 of the present application;
FIG. 4 is a schematic structural diagram of the other side of the embodiment 1 of the present application;
fig. 5 is a schematic view of the internal structure of the second ventilation chamber in embodiment 2 of the present application.
Description of reference numerals: 1. a first module; 11. a first installation compartment; 111. a first electric fan; 12. a first ventilation chamber; 121. an air inlet grid plate; 2. a second module; 21. a second installation compartment; 211. a second electric fan; 22. a second ventilation chamber; 221. a heat conductive sheet; 2211. a ventilation slot; 222. a dustproof net cover; 3. an auxiliary heat dissipation module; 31. a heat dissipation compartment; 311. a third ventilation chamber; 312. a circulation chamber; 313. a third electric fan; 32. a fan; 4. a reactor mounting module; 41. an electrical compartment; 411. an air outlet grid plate; 42. a reactor.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
Example 1
The embodiment of the application discloses a VVVF heat dissipation system.
Referring to fig. 1, a VVVF heat dissipation system is applied to a VVVF traction inverter installed in a subway and used for controlling the movement of a subway vehicle, and includes a first module 1, a second module 2, an auxiliary heat dissipation module 3, and a reactor installation module 4, which are sequentially arranged, wherein the first module 1 is located at the front end of the movement direction of the subway vehicle.
Referring to fig. 2 and 3, the first module 1 includes a first installation cabin 11 and a first ventilation chamber 12, and sub-components constituting the VVVF traction inverter are installed in the first installation cabin 11; the first ventilation chamber 12 is positioned at the bottom of the first installation cabin 11, air inlets are formed in the side wall of the first ventilation chamber 12, which is away from one side of the second module 2, and the two side walls of the first ventilation chamber 12, which are adjacent to the second module 2, and communicated to the inside of the first ventilation chamber 12, and each air inlet is provided with an air inlet grid plate 121; when the subway moves, the walking wind generated by the relative motion of the subway and the outside air can enter the first ventilation chamber 12 through the air inlet grid plate 121, and the walking wind exchanges heat with the side wall of the first installation cabin 11 to take away the heat generated in the auxiliary first installation cabin 11, so that the cooling effect is achieved.
Referring to fig. 3, the second module 2 includes a second installation compartment 21 and a second ventilation compartment 22, and sub-components constituting the VVVF traction inverter are also installed in the second installation compartment 21; a first air vent is formed between the second installation cabin 21 and the first installation cabin 11, and a first electric fan 111 is installed on the first air vent and used for promoting the air flow between the first installation cabin 11 and the second installation cabin 21; the second ventilation chamber 22 is located at the bottom of the second installation compartment 21, and the second ventilation chamber 22 communicates with the first ventilation chamber 12, so that the traveling wind can enter the inside of the second ventilation chamber 22 from the first ventilation chamber 12.
Referring to fig. 3, a plurality of heat-conducting fins 221 are arranged side by side in the second ventilation chamber 22, each heat-conducting fin 221 is in a vertical state, a gap exists between adjacent heat-conducting fins 221, and the gaps between adjacent heat-conducting fins 221 are all right opposite to the first ventilation chamber 12; each heat-conducting fin 221 penetrates through the second air ventilation chamber 22, so that the heat-conducting fin 221 is partially positioned in the second mounting chamber 21, and the sub-components in the second mounting chamber 21 are connected with the heat-conducting fins 221; the heat generated by the sub-components in the second mounting compartment 21 is transferred to the heat-conducting fins 221, and when the traveling air enters the second ventilation compartment 22 from the first ventilation compartment 12, the traveling air passes through the gaps between the adjacent heat-conducting fins 221, so that the heat on the heat-conducting fins 221 is taken away, and the cooling speed of the second mounting compartment 21 can be further improved.
Referring to fig. 3, all the heat-conducting fins 221 located in the second ventilation chamber 22 are sleeved with the dust-proof net 222, and the dust-proof net 222 can play a role in blocking dust, so that the situation that dust brought by the traveling wind adheres to the surfaces of the heat-conducting fins 221 to affect heat exchange between the heat-conducting fins 221 and the traveling wind is reduced; the dust-proof net cover 222 in the application is made of elastic yarns, and is used for reducing the possibility of breakage of the elastic net cover when the dust-proof net cover 222 is impacted by walking wind, so that the elastic net cover has a good service life.
Referring to fig. 2, the auxiliary heat dissipation module 3 includes a heat dissipation chamber 31 and a fan 32, wherein the heat dissipation chamber 31 includes a third ventilation chamber 311 and circulation chambers 312 disposed at both sides of the third ventilation chamber 311, and the third ventilation chamber 311 is communicated with the second ventilation chamber 22, so that the traveling air can enter the third ventilation chamber 311 from the second ventilation chamber 22; the fan 32 is installed in the third ventilation chamber 311, and the fan 32 is higher than the second ventilation chamber 22, and is used for pumping the walking wind upwards and changing the moving direction of the walking wind; a second ventilation opening is formed between the two circulation chambers 312 and the second installation cabin 21, and a second electric fan 211 is installed at the second ventilation opening and used for promoting the air flow between the circulation chambers 312 and the second installation cabin 21.
Referring to fig. 2 and 4, the reactor installation module 4 includes an electrical compartment 41, where the electrical compartment 41 is used for installing a reactor 42 used in cooperation with the VVVF traction inverter; the electric appliance cabin 41 is communicated with the third ventilation chamber 311, so that the traveling air can enter the electric appliance cabin 41 from the third ventilation chamber 311; an air outlet is formed in the bottom wall of the electric appliance cabin 41 and communicated to the inside of the electric appliance cabin, so that traveling air can be discharged from the air outlet grid plate 411; the air outlet is provided with an air outlet grid plate 411 for reducing the entering of external garbage into the electric appliance cabin 41 from the air outlet.
Referring to fig. 2, a third air vent is respectively arranged between the electrical equipment compartment 41 and the two circulation chambers 312, and a third electric fan 313 is installed at the third air vent; the air outlet directions of the second electric fan 211 and the third electric fan 313 in the same circulation chamber 312 are set to be the same, the air outlet directions of the two second electric fans 211 in different circulation chambers 312 are set to be different, and the air outlet directions of the two third electric fans 313 in different circulation chambers 312 are set to be different, so that a circulating air cooling channel is formed among the electric appliance compartment 41, the two circulation chambers 312 and the second installation compartment 21, the circulation of air is further promoted, and the cooling speed of the VVVF traction inverter is favorably improved.
The implementation principle of the embodiment 1 of the application is as follows:
when the subway moves, the external air and the subway move relatively to form walking air, and the walking air enters the first ventilation chamber 12 from the air inlet grid plate 121 and then sequentially passes through the second ventilation chamber 22, the third ventilation chamber 311 and the electric appliance cabin 41; when the traveling wind flows, heat exchange is carried out between the traveling wind and the side walls of the passing cabins, so that heat generated when the VVVF traction inverter works is taken away.
One part of the traveling wind entering the electric compartment 41 is discharged from the wind outlet grid plate 411, and the other part of the traveling wind enters the electric compartment 41 again after passing through the circulating chamber 312, the second installation compartment 21 and the other circulating chamber 312 in sequence, so that wind cooling circulation is formed, and the cooling speed of the VVVF traction inverter is further increased.
Example 2
The embodiment of the application discloses a VVVF heat dissipation system.
Referring to fig. 5, a VVVF heat dissipation system disclosed in the embodiment of the present application is different from that in embodiment 1 in that:
gaps between adjacent heat-conducting fins 221 are aligned with both sides of the second ventilation chamber 22, so that the side surfaces of the heat-conducting fins 221 are aligned with the first ventilation chamber 12; each heat conducting fin 221 is provided with a ventilating slot 2211, and the top wall of the ventilating slot 2211 is flush with the side wall between the second ventilating chamber 22 and the second installation cabin 21; in the embodiment of the present application, the ventilation slots 2211 of the adjacent heat-conducting fins 221 are arranged in a staggered manner.
The implementation principle of embodiment 2 of the present application is as follows:
all the heat-conducting fins 221 form a labyrinth noise reduction passage together, and when the traveling wind enters the gap between the adjacent heat-conducting fins 221 from the ventilation groove 2211, the noise generated between the traveling wind and the heat-conducting fins 221 can be disturbed, thereby reducing the noise.
The above is a preferred embodiment of the present application, and the scope of protection of the present application is not limited by the above, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A VVVF heat dissipation system is characterized in that: the reactor comprises a first module (1), a second module (2), an auxiliary heat dissipation module (3) and a reactor installation module (4) which are sequentially arranged, wherein the first module (1) comprises a first installation cabin (11) and a first ventilation chamber (12) arranged at the bottom of the first installation cabin (11), the second module (2) comprises a second installation cabin (21) and a second ventilation chamber (22) arranged at the bottom of the second installation cabin (21), the first ventilation chamber (12) is communicated with the second ventilation chamber (22), and a through air inlet is formed in the outer side wall of the first ventilation chamber (12);
the auxiliary heat dissipation module (3) comprises a heat dissipation cabin (31) and a fan (32) arranged in the heat dissipation cabin (31), and the heat dissipation cabin (31) is communicated with the second ventilation chamber (22); the reactor installation module (4) comprises an electrical appliance cabin (41), wherein the electrical appliance cabin (41) is used for installing a reactor (42) matched with VVVF for use; the heat dissipation cabin (31) is communicated with the electric appliance cabin (41), and a through air outlet is formed in the bottom wall of the electric appliance cabin (41).
2. The VVVF cooling system of claim 1, wherein: three exposed side walls of the first ventilation chamber (12) are provided with air inlets, and each air inlet is provided with an air inlet grid plate (121) in a matching mode.
3. The VVVF cooling system of claim 1, wherein: air vents are arranged between the first installation cabin (11) and the second installation cabin (21), between the second installation cabin (21) and the heat dissipation cabin (31), and between the heat dissipation cabin (31) and the electric appliance cabin (41), and electric fans are installed on each air vent.
4. The VVVF cooling system of claim 3, wherein: the heat dissipation cabin (31) comprises a third ventilation chamber (311) communicated with the second ventilation chamber (22) and circulation chambers (312) respectively arranged at two sides of the third ventilation chamber (311), the fan (32) is arranged on the third ventilation chamber (311), and the ventilation openings are arranged in the circulation chambers (312); the air outlet directions of the electric fans arranged in the two circulation chambers (312) are different.
5. The VVVF cooling system of claim 1, wherein: a plurality of heat-conducting fins (221) are arranged in the second ventilation chamber (22), and gaps exist between every two adjacent heat-conducting fins (221); each heat-conducting fin (221) penetrates through the second installation cabin (21).
6. The VVVF cooling system of claim 5, wherein: each gap faces the first ventilation chamber (12), and all the heat-conducting fins (221) are sleeved with a dustproof net sleeve (222) together.
7. The VVVF cooling system of claim 6, wherein: the dustproof net cover (222) is an elastic dustproof net cover.
8. The VVVF cooling system of claim 5, wherein: each gap is opposite to the side walls at two sides of the second ventilation chamber (22); each heat-conducting fin (221) is provided with a ventilating groove (2211), and the ventilating grooves (2211) of the adjacent heat-conducting fins (221) are arranged in a staggered mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120856851.1U CN214507757U (en) | 2021-04-23 | 2021-04-23 | VVVF heat dissipation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120856851.1U CN214507757U (en) | 2021-04-23 | 2021-04-23 | VVVF heat dissipation system |
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| Publication Number | Publication Date |
|---|---|
| CN214507757U true CN214507757U (en) | 2021-10-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120856851.1U Active CN214507757U (en) | 2021-04-23 | 2021-04-23 | VVVF heat dissipation system |
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| CN (1) | CN214507757U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115001290A (en) * | 2022-06-20 | 2022-09-02 | 上海阿尔斯通交通电气有限公司 | Subway traction inverter |
-
2021
- 2021-04-23 CN CN202120856851.1U patent/CN214507757U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115001290A (en) * | 2022-06-20 | 2022-09-02 | 上海阿尔斯通交通电气有限公司 | Subway traction inverter |
| CN115001290B (en) * | 2022-06-20 | 2026-02-06 | 上海阿尔斯通交通电气有限公司 | Subway traction inverter |
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