CN104143900A - Cooling device special for anti-explosion mining frequency converter - Google Patents
Cooling device special for anti-explosion mining frequency converter Download PDFInfo
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- CN104143900A CN104143900A CN201410364849.7A CN201410364849A CN104143900A CN 104143900 A CN104143900 A CN 104143900A CN 201410364849 A CN201410364849 A CN 201410364849A CN 104143900 A CN104143900 A CN 104143900A
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Abstract
The invention discloses a cooling device special for an anti-explosion mining frequency converter. The cooling device is characterized by comprising a cooling base plate fixedly connected with a rear plate of the anti-explosion frequency converter, a plurality of cooling fins are arranged on one of the surfaces of the cooling base plate in parallel and extend outwards in the perpendicular direction of the cooling base plate, and cooling intervals are arranged between the cooling fins. The cooling device is long in service life, uniform in cooling and high in cooling efficiency. An IGBT, heat conduction silicone grease, the base plate and the cooling fins form a cooling circulation. Few transferring links exist, so that heat transferring attenuation is small. No gas-liquid form change exists in the heat transferring process, so that heat transferring is fast. The red copper cooling fins are high in heat conduction efficiency, and much heat can be transferred to air within the same time.
Description
Technical field
The present invention relates to a kind of heat abstractor, relate in particular to a kind of coal mine explosion-proof frequency converter heat radiating device special.
Background technology
Along with low-voltage alternating-current variable-frequency control technique reach its maturity and perfect, universal frequency converter has obtained rapidly application widely.But sometimes, due to the particularity of operating mode, it is awkward that universal frequency converter seems, such as: adhesive tape conveyor in coal mine underground, hoisting gear, blower fan, scratch board conveyor etc. need the motor driven equipment of speed governing, and the equipment component of laboratory, be exactly an example wherein.Explosion-proof frequency converter be exactly for these more special operating modes develop because explosion-proof frequency converter has the advantages such as dustproof, moistureproof, explosion-proof, it is mainly used in colliery, petroleum gas, petrochemical industry and chemical industry.
The main heat-generating units of mining anti-explosion frequency converter is rectified power unit (IGBT) and inverter power unit (IGBT).Rectified power unit is used identical heat abstractor with inverter power unit.
At present, the main heat abstractor of mining anti-explosion frequency converter is heat-pipe radiator.According to the caloric value of the IGBT of different capacity grade frequency converter, select model and the quantity of corresponding heat-pipe radiator.
As shown in Figure 1, the pertinent relation of conventional heat pipe radiator and IGBT as shown in Figure 2 for the connected mode axial view of conventional heat pipe radiator and explosion-proof frequency converter.
In Fig. 1 and Fig. 2, IGBT is as main heater element, during work, produce amount of heat, heat is passed to heat pipe heat radiation substrate by heat-conducting silicone grease, by substrate, pass to the heat pipe being embedded in substrate again, refrigerant endothermic gasification in heat pipe, along acclivitous pipeline, rise and by radiating fin, dispel the heat simultaneously and rise to radiating fin place, the refrigerant of gasification transfers heat to radiating fin, refrigerant regelation after exothermic temperature reduces becomes liquid, under the effect of gravity, be back in substrate, thereby complete heat radiation.Due to air natural circulation and blower fan acting, radiating fin in air, completes once heat radiation circulation by dissipation of heat.As need heat dissipation capacity excessive, can be aided with the flow that blower fan strengthens fin surrounding air, thereby increase radiating efficiency.
The radiating mode of traditional frequency conversion device is the heat pipe heat radiation shown in above two figure, and this radiating mode is simply effective, but simultaneous problems.
1. radiating efficiency is low.As mentioned above, once heat radiation circulation need to through IGBT-heat-conducting silicone grease-heat-radiating substrate-heat pipe-refrigerant-liquid gas liquid conversion, just can transfer heat to refrigerant diffuses in air, whole heat radiation process link is many, the heat that different link thermal resistance differences cause radiating efficiency to distribute successively decreases by link, and refrigerant need to pass through liquefaction-gasification-liquefaction three phases, speed is slower, in addition due to and refrigerant specific heat capacity relatively little, the heat that therefore each gas-liquid conversion can be taken away seldom causes whole system reaction speed not high, causes radiating efficiency low.
2. heat radiation is uneven.Liquid-solution-air state transformation that heat pipe heat radiation mainly vacuumizes the refrigerant in the heat pipe of processing by process dispels the heat, so amount of refrigerant in the distribution of heat pipe on heat pipe substrate and every heat pipe, consistency in actual production process is difficult to hold, can cause the radiating efficiency of heat pipe zones of different to have difference, thereby the different semiconductor power device radiating condition that causes being arranged on same heat pipe is different, can cause the work of part semiconductor power device undesired and produce fault.Due to IGBT skewness on heat-radiating substrate, the heat that the heat-radiating substrate of common material cannot produce IGBT is diffused into rapidly other parts of substrate, cause IGBT peripheral temperature too high, heat pipe cannot fully dispel the heat, other portion temperature are not high, refrigerant in heat pipe absorbs less than heat, causes heat radiation uneven.
3. shell corrosion.Refrigerant major part in heat pipe is the liquid (liquefied ammonia etc.) easily gasifying, and refrigerant opposite heat tube tube wall is corrosive, and after working long hours, thermotube wall attenuation is even leaked, and heat-pipe radiator loses heat-sinking capability after leaking substantially.
4. easily form vent plug.Because refrigerant at high temperature can carry out chemical reaction with tube wall, or refrigerant at high temperature decomposes, generate incoagulable gas, incoagulable gas is trapped in heat pipe upper fins place always, make the refrigerant of gasification complete heat exchange with fin, seriously reduce heat pipe heat radiation efficiency.
5. heat-pipe radiator is bulky.For meeting radiating efficiency, between the radiating fin of heat-pipe radiator, gap ratio is larger, while needing heat dissipation capacity large and need to install in addition axial flow type heat radiation blower fan additional, cost is further raise, and volume is huger.
Summary of the invention
The deficiency existing for prior art, technical problem to be solved by this invention is, provide a kind of simple in structure, with low cost, volume is less, radiating efficiency is higher and do not have the coal mine explosion-proof frequency converter heat radiating device special of corrosion and vent plug.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of coal mine explosion-proof frequency converter heat radiating device special, it is characterized in that: comprise a heat-radiating substrate being fixedly connected with plate after explosion-proof frequency converter, the surface of described heat-radiating substrate wherein one side stretches out and is set side by side with a plurality of radiating fins from the vertical direction of heat-radiating substrate, is provided with heat radiation gap between each radiating fin.
Above-mentioned coal mine explosion-proof frequency converter heat radiating device special, is characterized in that: the one-body molded setting of described radiating fin and heat-radiating substrate.
Above-mentioned coal mine explosion-proof frequency converter heat radiating device special, is characterized in that: described radiating fin is along the length direction of heat-radiating substrate perpendicular to heat-radiating substrate the setting that stretches out, and the length of radiating fin is identical with the length of heat-radiating substrate.
Above-mentioned coal mine explosion-proof frequency converter heat radiating device special, is characterized in that: described heat-radiating substrate and radiating fin adopt red copper material to make.
Above-mentioned coal mine explosion-proof frequency converter heat radiating device special, is characterized in that: the width in described heat radiation gap is 15mm～20mm.
The advantage of coal mine explosion-proof frequency converter heat radiating device special of the present invention is: cost.Heat-pipe radiator is because heat pipe need to be used resistant material, and the reason such as radiating fin difficulty of processing height, and price is higher.Red copper radiating fin chip radiator, without considering refrigerant problem compatible with radiator, only red copper and radiating fin two parts, consist of, so difficulty of processing is low, and material price is cheap.
1) long service life.Owing to there not being liquid coolant, therefore there is not etching problem, radiator only depends on ability of anti-deformation useful life.
2) heat radiation evenly.Heat-radiating substrate of the present invention adopts red copper material, and the heat that IGBT produces can be spread rapidly to substrate surrounding by perspective plane rapidly, and in unit length, the diverse location of red copper material has a narrow range of temperature, so IGBT heat production can be dispersed on radiating fin equably.
3) radiating efficiency is high.A heat radiation circulation of the present invention is: IGBT-heat-conducting silicone grease-heat-radiating substrate-radiating fin.Transmission link is few, and the heat decay therefore transmitting is less.There is not gas-liquid metamorphosis in heat transfer process, therefore conducts heat rapidly.Red copper radiating fin heat transfer efficiency is high, in same time, can in air, transmit more heats.
Accompanying drawing explanation
Fig. 1 is the structural representation of conventional heat pipe radiator;
Fig. 2 is structural representation of the present invention;
Fig. 3 is the structural representation that heat abstractor of the present invention is connected with rectified power unit;
Fig. 4 is the partial structurtes enlarged drawing of I part in Fig. 3;
Fig. 5 is the syndeton schematic diagram of heat abstractor of the present invention and coal mine explosion-proof frequency converter.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further details;
As shown in Fig. 2,3,4,5, a kind of coal mine explosion-proof frequency converter heat radiating device special, comprise a heat-radiating substrate 2 being fixedly connected with plate after explosion-proof frequency converter 1, the surrounding of heat-radiating substrate 2 is provided with the bolt hole 3 being fixedly connected with plate after explosion-proof frequency converter 1, and the two can be by the conventional detachable connection of bolt.
The surface of described heat-radiating substrate 2 wherein one side stretches out and is set side by side with a plurality of radiating fins 4 from the vertical direction of heat-radiating substrate 2, is provided with heat radiation gap 5 between each radiating fin 4.For improving radiating effect, strengthen heat transference efficiency, described radiating fin 4 and the one-body molded setting of heat-radiating substrate 2.Simultaneously, the structure of one-body molded setting, also can greatly improve the useful life of this heat abstractor, prevent that heat-radiating substrate 2 from affecting radiating effect with radiating fin 4 distortion, described radiating fin 4 is along the length direction of heat-radiating substrate 2 perpendicular to heat-radiating substrate 2 setting that stretches out, and the length of radiating fin 4 is identical with the length of heat-radiating substrate 2.Heat-radiating substrate 2 adopts the uniform red copper material of heat radiation to make with radiating fin 4.In the present embodiment, as best radiating effect, the width in described heat radiation gap 5 is preferably 15mm～20mm.Rectified power unit 6 is installed on heat-radiating substrate 2, is provided with the heat-conducting silicone grease layer that improves heat transfer efficiency between rectified power unit 6 and heat-radiating substrate 2.
The heat radiation process of product of the present invention is as follows: after rectified power unit (IGBT) 6 operation heat production, by heat-conducting silicone grease layer, transfer heat to red copper heat-radiating substrate 2, heat-radiating substrate 2 is directly passed to radiating fin 4 by heat, under the effect of air natural circulation and axial flow type heat radiation blower fan, by dissipation of heat in air.
Certainly, above-mentioned explanation is not limitation of the present invention, and the present invention is also not limited to above-mentioned giving an example; those skilled in the art; in essential scope of the present invention, the variation of making, remodeling, interpolation or replacement, all should belong to protection scope of the present invention.
Claims (5)
1. a coal mine explosion-proof frequency converter heat radiating device special, it is characterized in that: comprise a heat-radiating substrate being fixedly connected with plate after explosion-proof frequency converter, the surface of described heat-radiating substrate wherein one side stretches out and is set side by side with a plurality of radiating fins from the vertical direction of heat-radiating substrate, is provided with heat radiation gap between each radiating fin.
2. coal mine explosion-proof frequency converter heat radiating device special according to claim 1, is characterized in that: the one-body molded setting of described radiating fin and heat-radiating substrate.
3. coal mine explosion-proof frequency converter heat radiating device special according to claim 2, is characterized in that: described radiating fin is along the length direction of heat-radiating substrate perpendicular to heat-radiating substrate the setting that stretches out, and the length of radiating fin is identical with the length of heat-radiating substrate.
4. coal mine explosion-proof frequency converter heat radiating device special according to claim 3, is characterized in that: described heat-radiating substrate and radiating fin adopt red copper material to make.
5. coal mine explosion-proof frequency converter heat radiating device special according to claim 4, is characterized in that: the width in described heat radiation gap is 15mm～20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410364849.7A CN104143900A (en) | 2014-07-29 | 2014-07-29 | Cooling device special for anti-explosion mining frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410364849.7A CN104143900A (en) | 2014-07-29 | 2014-07-29 | Cooling device special for anti-explosion mining frequency converter |
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| CN104143900A true CN104143900A (en) | 2014-11-12 |
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| CN201410364849.7A Pending CN104143900A (en) | 2014-07-29 | 2014-07-29 | Cooling device special for anti-explosion mining frequency converter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110799021A (en) * | 2019-11-15 | 2020-02-14 | 阳光电源股份有限公司 | Heat dissipation device and converter |
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| CN2567861Y (en) * | 2002-08-02 | 2003-08-20 | 唐山开诚电器有限责任公司 | V-shaped radiating fin type explosion-proof frequency converter |
| CN201413821Y (en) * | 2009-04-10 | 2010-02-24 | 高金才 | Radiator of explosion-proof variable-frequency speed controller |
| CN101752998A (en) * | 2010-02-11 | 2010-06-23 | 杭州优迈科技有限公司 | Frequency converter for heat pipe heat radiation type elevator and an elevator control cabinet adopting same |
| CN101888168A (en) * | 2010-07-30 | 2010-11-17 | 中国北车股份有限公司大连电力牵引研发中心 | Current-variable controller cabinet |
| WO2013173580A1 (en) * | 2012-05-16 | 2013-11-21 | Phillips Machine Service, Inc. | Enclosure for use of prime mover in a hazardous environment |
| CN204046396U (en) * | 2014-07-29 | 2014-12-24 | 青岛威控电气有限公司 | A kind of coal mine explosion-proof frequency converter heat radiating device special |
-
2014
- 2014-07-29 CN CN201410364849.7A patent/CN104143900A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2567861Y (en) * | 2002-08-02 | 2003-08-20 | 唐山开诚电器有限责任公司 | V-shaped radiating fin type explosion-proof frequency converter |
| CN201413821Y (en) * | 2009-04-10 | 2010-02-24 | 高金才 | Radiator of explosion-proof variable-frequency speed controller |
| CN101752998A (en) * | 2010-02-11 | 2010-06-23 | 杭州优迈科技有限公司 | Frequency converter for heat pipe heat radiation type elevator and an elevator control cabinet adopting same |
| CN101888168A (en) * | 2010-07-30 | 2010-11-17 | 中国北车股份有限公司大连电力牵引研发中心 | Current-variable controller cabinet |
| WO2013173580A1 (en) * | 2012-05-16 | 2013-11-21 | Phillips Machine Service, Inc. | Enclosure for use of prime mover in a hazardous environment |
| CN204046396U (en) * | 2014-07-29 | 2014-12-24 | 青岛威控电气有限公司 | A kind of coal mine explosion-proof frequency converter heat radiating device special |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110799021A (en) * | 2019-11-15 | 2020-02-14 | 阳光电源股份有限公司 | Heat dissipation device and converter |
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Application publication date: 20141112 |