CN102751803A - Motor cooled by heat conducting pipe cooling mode - Google Patents
Motor cooled by heat conducting pipe cooling mode Download PDFInfo
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- CN102751803A CN102751803A CN2012102355818A CN201210235581A CN102751803A CN 102751803 A CN102751803 A CN 102751803A CN 2012102355818 A CN2012102355818 A CN 2012102355818A CN 201210235581 A CN201210235581 A CN 201210235581A CN 102751803 A CN102751803 A CN 102751803A
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Abstract
The invention discloses a motor cooled by a heat conducting pipe cooling mode, and belongs to the technical field of motors. The motor transmits heat emitted by a motor heat emitting source directly by a heat conducting pipe so as to cool the motor; and the motor comprises a stator, a rotor, an armature winding and two individual heat conducting pipe cooling groups, wherein the two individual heat conducting pipe cooling groups can be used individually and can be combined to be used. The invention provides the motor different from the traditional cooling mode, the novel cooling mode can solve the development restriction of the current traditional motor; the aims of structure simplification and cost reduction are achieved; the motor protection level can be convenient to improve; the motor cooled by the heat conducting pipe cooling mode provided by the invention provides solid basis and technical guarantee for the miniaturized, compact and light development for the motor body type; and the bottleneck of motor body type development is solved.
Description
Technical field
The present invention relates to a kind of motor, belong to technical field of motors with the cooling of the heat pipe type of cooling.
Background technology
One, the origin of motor cooling problem
Motor always has the sub-fraction loss to be transformed into heat when carrying out power conversion, and it must utilize surrounding medium constantly heat to be distributed through rotor, Stator and electrical machine shell.Along with the variation of modern needs, the motor build must solve the cooling problem to miniaturization, densification, lighting development.The motor feels hot, and there are two rotors and stator in the source, and the power of rotor heating is not necessarily maximum, and temperature is generally the highest; Stator is made up of silicon steel body and winding, and temperature is not necessarily very high more on the contrary because of volume, but heating power is bigger, and this is relevant with stator structure.
Heat radiation is influenced by thickness and the temperature difference etc. of size, the material of area of dissipation.Thermal conductivity (Fourier equation formula) from material:
Q=ΚΑΔT/d
R=ΑΔT/Q
Q: heat, W; K: thermal conductivity, W/mk; A: contact area; D: heat transferred distance; Δ T: temperature difference; R: thermal resistance value.
Thermal conductivity K is the proper property parameter of material itself, is used to describe the capacity of heat transmission of material.This characteristic all is what it doesn't matter with size, shape, the thickness of material itself, and just the composition with material itself has relation.
Top two formula are merged, can obtain:
K=d/R
Because the K value is constant, can see to draw thermal resistance value, d is directly proportional with material thickness, just says that also material is thick more, and thermal resistance is big more.Simultaneously this formula is a Utopian formula the most basic, and the condition that he sets is, contact-making surface is fully smooth and smooth, and all heats all pass through material through heat conducting mode, and reach the other end.This is impossible condition for a reality.So test and the thermal resistance of calculating not exclusively are the thermal resistance value of material also, should be the thermal resistance value+contact-making surface thermal resistance value of material itself.Because the evenness of contact-making surface, smooth or coarse and fastening pressure is installed is varied in size will produce different contact-making surface thermal resistance value, also can draw different total heat resistances.
In a word:
A, same material, thermal conductivity is a constant numerical value, thermal resistance value can change with thickness.
B, same material, thickness is big more, and it is many more to be interpreted as simply that heat is gone out the distance that will walk through material transfer, and the time of being consumed is also many more, and usefulness is also poor more.
C, for Heat Conduction Material, select for use suitable thermal conductivity, thickness that performance is had much relations.Select the very high material of thermal conductivity, but thickness is very big, also is that performance is imperfect, optimal selection is: thermal conductivity is high, thin thickness, and perfectly contact pressure guarantees best interface contact.
See that from above along with the raising that motor is required, the cooling problem is just outstanding.Can solve through relaxing temperature limitation? Not all right.The general temperature limitation of enamelled wire now commonly used is below 180 ℃; Permanent magnet demagnetization temperature is in 80--180 ℃ of scope, and different cultivars permanent magnet setting is different.This has just determined to satisfy through heat radiation more efficiently the high request of motor.
Two, the motor tradition type of cooling
The motor tradition type of cooling has three kinds: freely circulate, casing surface cool and fitted outside cooler.
Freely circulating is that coolant directly freely sucks from surrounding medium, directly turns back to surrounding medium then.This mode is decided by coolant quantity that sucks and motor radiating contact area.Initiatively sucking coolant is to want the additive decrementation energy, and the motor build dwindles the internal circulation of the motor space contact area that reduces, dispels the heat own to miniaturization, densification, lighting development, does not allow too big additional cooler.
The casing surface cool is by the casing surface radiating; Power is big a little, volume is littler just can not satisfy the heat radiation needs; And heat to pass the distance that will walk through motor material maximum, the time of being consumed is also maximum, thermal resistance is also maximum; Usefulness is also the poorest, and heavy-duty motor is generally as aided cooling mode.
The fitted outside cooler is passed to the fitted outside cooler that is contained in above the motor with heat earlier through the circulation of motor internal coolant, goes out heat transferred again.Heat radiation accessory station motor significant proportion, the closed motor usual way.
Free circulation can directly be cooled off thermal source, and thermal resistance is little, but limited by free air space, contact area, can not satisfy the demand to heavy-duty motor and build miniaturization, densification motor.Casing surface cool and fitted outside cooler all need pass through multi-part and conduct heat, and thermal resistance is big.The general cooling method that variety of way is mixed that adopts of motor even so traditional type of cooling has run into bottleneck, has limited motor and has further developed now.
Three, heat pipe
Heat pipe is to be processed by materials such as steel, copper, aluminium; Heat pipe is pumped into certain vacuum and (in airtight pipe, is pumped into the negative pressure of 1～2 * 10-4Pa earlier; Charging into an amount of coolant under this state) after be sealed to form, the forming of heat pipe inside pipe wall by multiple inorganic active metal and compound thereof, heat pipe has extraordinary hot activity and heat sensitivity; Heat pipe is met heat and is inhaled, and heat pipe is met cold and put.This hot superconduction working medium of heat pipe is activated under uniform temperature (30 ℃); Heat pipe also transmits heat with molecule concussion phase deformation type; It is about 10,000 times of common metal that the superpower heat conductivility of heat pipe makes its conductive coefficient, and heat pipe conduction temperature damping is not almost and can not transmit (velocity of sound transmission) at a terrific speed.Simultaneously; At the heat transfer area of heat pipe radiating segment radiation fin several times to tens times of light pipe; Fin ability augmentation of heat transfer; Fin reduces flow resistance, and the fin of appropriate design can reduce metal wastage, thereby flange-cooled heat pipe has improved the economy and the operational reliability of heat transmission equipment.The narrow location that suitable elongated core of heat pipe and common coolant can't arrive.The modification structures plume of heat pipe, hot plate more can adapt to the heat radiation of specific position.
Use the heat pipe advantage:
1, rate of heat transfer is fast, and heat transfer power is big, has good isothermal performance, and good isothermal makes heat pipe under the very little temperature difference, transmits very big heat flux, and heat transmission resistance is little.
2, superpower thermal conductivity: can be 30 ℃ of temperature--conduction heat in 1000 ℃ of scopes, single heat transfer efficiency is more than 98%.
3, radiating efficiency is high, reduces heat accumulation and heat radiation evenly.
4, can realize quietly, and save the motor internal space, make more compact structure.
5, safety in utilization: the pipe internal pressure is lower than external atmosphere pressure, and heat pipe can not blasted.
Summary of the invention
The invention provides a kind of simple in structurely, with low cost, radiating efficiency is high, the motor with the cooling of the heat pipe type of cooling of applied range, available heat pipe directly the general the motor feels hot that heat transferred that the source sends goes out cooling motor.
The present invention adopts following technical scheme for solving its technical problem:
A kind of motor with the cooling of the heat pipe type of cooling; Comprise stator, rotor and armature winding; Comprise that also two overlap independently heat pipe cooling group, the cooling that rotor is housed on first stator is with heat pipe cooling group, and the cooling of rotor is placed in the stator slot top, stator teeth limit near rotor with heat pipe cooling group; The cooling that stator is housed on second stator is with heat pipe cooling group, and the cooling of stator is positioned at the periphery of second stator with heat pipe cooling group.
Beneficial effect of the present invention is following:
1, a kind of motor that is different from traditional type of cooling is provided, its novel type of cooling be with heat pipe directly will the motor feels hot the heat transferred sent of source go out cooling motor.With the motor of heat pipe type of cooling cooling, it is about 10,000 times of common metal that the superpower heat conductivility of its heat pipe makes its conductive coefficient, and heat pipe conduction temperature damping is not almost and can not transmit (velocity of sound transmission) at a terrific speed.This just makes the heat can be directly outside pyrotoxin is led motor, and thermal resistance is than little many of traditional approach, and fast of heat transferred make motor more be prone to heat radiation more.
2, a kind of motor simple in structure is provided; Its high cooling efficiency cooling package simple in structure can replace the cooling package of some baroque motors; Like baroque cooling packages such as air-conditioning cool electric machine, water-cooled machine or other pressure cool electric machines; Make many motors can cancel the supplementary structure of originally having to add, reach designs simplification and the purpose that reduces cost because of heat radiation.
3, a kind of inexpensive method that improves the motor degree of protection is provided, has derived when heat adopts heat pipe, motor just can adopt closed structure easily, can more easily the motor degree of protection be improved, even to dirt cipher telegram machine, watertight motor rank.
4, heat pipe of the present invention and modification thereof can adapt to various narrow location or special construction, for electric machine structure design facilitates.Solved the bottleneck of motor build within the specific limits to miniaturization, densification, lighting development.
Description of drawings
Fig. 1 for the present invention to the cooling of rotor with heat pipe cooling group structural representation, wherein 1 is first stator; The 2nd, the cooling of rotor is with heat pipe cooling group.
Fig. 2 for the present invention to the cooling of stator with heat pipe cooling group structural representation, wherein 3 is motor casings; The 4th, the cooling of stator is with heat pipe cooling group; 5 is second stators.
Fig. 3 makes up when cooling off rotor and stator for the present invention simultaneously, heat pipe cooling group structural representation, and wherein 1 is first stator; The 2nd, the cooling of rotor is with heat pipe cooling group; The 4th, the cooling of stator is with heat pipe cooling group.
Embodiment
Below in conjunction with accompanying drawing the invention is explained further details.
As shown in Figure 1, to the cooling of rotor with heat pipe cooling group.The cooling that rotor is housed on first stator 1 is with heat pipe cooling group 2; Rotor rotates when work, can not adhere to object, and this group heat pipe cooling group is placed in the stator slot top, stator teeth limit near rotor; In the stator slot top, put into the heat-conducting block of the band heat pipe similar with groove shape; Heat pipe will lay near rotor on heat-conducting block as far as possible, and one circle lays heat-conducting block along stator slot top, stator teeth limit, through heat pipe on it; Can to greatest extent the rotor heat be derived, reduce temperature of rotor.The heat of deriving through the heat pipe radiating segment and on fin conductive go out.The heat pipe cooling group of this position also has certain cooling effect to stator.Simultaneously heat pipe (piece) can stop also that on this position the coolant between rotor and stator goes in the stator slot from notch, influence rotor and dispels the heat.Use heat pipe cooling group to be independent use to the cooling of rotor in the drawings.
As shown in Figure 2, to the cooling of stator with heat pipe cooling group.The cooling that stator is housed on second stator 5 is with heat pipe cooling group 4; A circle moulding heat conduction ring (the moulding heat-conducting plate of heat pipe modification) is put in the place of side contacts outside the stator periphery; Heat is derived through the heat pipe on the moulding heat-conducting plate, and the heat of derivation directly looses heat in air through heat pipe radiating segment and fin.The place of stator cylindrical contact here can be position, the stator periphery outside, also can be stator near the inboard position of periphery, figure is position, the stator periphery outside.Fin also can add the air quantity that fan improves through fin and improve radiating effect on its limit.Heat just can be skipped motor casing 3 direct loosing in air like this, improves radiating efficiency.Use heat pipe cooling group to be independent use to the cooling of stator in the drawings.
As shown in Figure 3, overlap independently heat pipe cooling group combination with two and use.The cooling that rotor is housed on first stator 1 is in the drawings overlapped independently heat pipe cooling group with the cooling of heat pipe cooling group 2 and stator with heat pipe cooling group 4, two, and this structure is used for combination.
Claims (1)
1. motor with heat pipe type of cooling cooling; Comprise stator, rotor and armature winding; It is characterized in that; Comprise that also two overlap independently heat pipe cooling group, the cooling that rotor is housed on first stator (1) is with heat pipe cooling group (2), and the cooling of rotor is placed in the stator slot top, stator teeth limit near rotor with heat pipe cooling group (2); The cooling that stator is housed on second stator (5) is with heat pipe cooling group (4), and the cooling of stator is positioned at the periphery of second stator (5) with heat pipe cooling group (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102355818A CN102751803A (en) | 2012-07-09 | 2012-07-09 | Motor cooled by heat conducting pipe cooling mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102355818A CN102751803A (en) | 2012-07-09 | 2012-07-09 | Motor cooled by heat conducting pipe cooling mode |
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| CN102751803A true CN102751803A (en) | 2012-10-24 |
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| CN2012102355818A Pending CN102751803A (en) | 2012-07-09 | 2012-07-09 | Motor cooled by heat conducting pipe cooling mode |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441585A (en) * | 2013-09-02 | 2013-12-11 | 南京磁谷科技有限公司 | Anti-explosion high-power high-speed motor and fan |
| CN104184229A (en) * | 2014-08-29 | 2014-12-03 | 南京磁谷科技有限公司 | Motor stator and winding method for motor stator |
| CN104963753A (en) * | 2015-06-30 | 2015-10-07 | 宁波普泽机电有限公司 | Starter air-cooling device |
| CN108233590A (en) * | 2018-03-09 | 2018-06-29 | 杭州六创电动汽车科技有限公司 | A kind of driving motor of electric vehicle |
| CN108471190A (en) * | 2018-05-31 | 2018-08-31 | 河南泓之泰实业有限公司 | A kind of motor that cooling device is easy to disassemble |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003230253A (en) * | 2002-01-30 | 2003-08-15 | Ishikawajima Harima Heavy Ind Co Ltd | Dynamo-electric machine |
| JP2005168265A (en) * | 2003-12-05 | 2005-06-23 | Nissan Motor Co Ltd | Cooling structure for rotary electric machine |
| CN101515738A (en) * | 2009-03-09 | 2009-08-26 | 郑州大学 | Water circulation cooling structure in submersible motor |
| CN201742181U (en) * | 2010-06-25 | 2011-02-09 | 武汉登奇机电技术有限公司 | Motor with embedded liquid cooling pipelines |
-
2012
- 2012-07-09 CN CN2012102355818A patent/CN102751803A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003230253A (en) * | 2002-01-30 | 2003-08-15 | Ishikawajima Harima Heavy Ind Co Ltd | Dynamo-electric machine |
| JP2005168265A (en) * | 2003-12-05 | 2005-06-23 | Nissan Motor Co Ltd | Cooling structure for rotary electric machine |
| CN101515738A (en) * | 2009-03-09 | 2009-08-26 | 郑州大学 | Water circulation cooling structure in submersible motor |
| CN201742181U (en) * | 2010-06-25 | 2011-02-09 | 武汉登奇机电技术有限公司 | Motor with embedded liquid cooling pipelines |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441585A (en) * | 2013-09-02 | 2013-12-11 | 南京磁谷科技有限公司 | Anti-explosion high-power high-speed motor and fan |
| CN104184229A (en) * | 2014-08-29 | 2014-12-03 | 南京磁谷科技有限公司 | Motor stator and winding method for motor stator |
| CN104184229B (en) * | 2014-08-29 | 2016-07-06 | 南京磁谷科技有限公司 | The method for winding of motor stator and motor stator |
| CN104963753A (en) * | 2015-06-30 | 2015-10-07 | 宁波普泽机电有限公司 | Starter air-cooling device |
| CN108233590A (en) * | 2018-03-09 | 2018-06-29 | 杭州六创电动汽车科技有限公司 | A kind of driving motor of electric vehicle |
| CN108471190A (en) * | 2018-05-31 | 2018-08-31 | 河南泓之泰实业有限公司 | A kind of motor that cooling device is easy to disassemble |
| CN108471190B (en) * | 2018-05-31 | 2023-08-29 | 佳木斯电机股份有限公司 | Motor with cooling device convenient to detach |
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Application publication date: 20121024 |