阅读说明：本技术 一种基于丁胞的电机通风冷却结构及风冷电机 (A kind of motor ventilation cooling structure and ventilated machine based on fourth born of the same parents ) 是由 刘向阳 褚健淳 赖添旺 何茂刚 张颖 于 2019-08-01 设计创作，主要内容包括：本发明公开了一种基于丁胞的电机通风冷却结构及风冷电机,电机通风冷却结构包括由机座内风道、定子风沟、定子和转子之间的气隙及转子通风孔构成的风路,机座内风道的内表面、定子铁芯的内表面、转子铁芯的外表面及转子通风孔的内表面具有均匀的凹陷状丁胞。电机运行时,由输出轴带动的风扇驱动空气,空气流经风路带走电机内部的热量,利用丁胞截断空气沿电机内部壁面流动的边界层,增大机座内风道的内表面、定子铁芯内表面、转子铁芯的外表面和转子通风孔的内表面的努赛尔系数,加强对流换热的效果,提高电机的散热能力；同时减少相应表面的空气阻力,减少摩擦造成的热损耗,有效提高电机的稳定性、可靠性和运行效率。(The invention discloses a kind of motor ventilation cooling structures and ventilated machine based on fourth born of the same parents, motor ventilation cooling structure includes by the air gap and the wind path that constitutes of rotor ventilation hole in base between air duct, stator wind ditch, stator and rotor, and the inner surface in air duct, the inner surface of stator core, the outer surface of rotor core and the inner surface in rotor ventilation hole have uniform recess fourth born of the same parents in base.When motor operation, air is driven by the fan that output shaft drives, air flows through wind path and takes away heat inside motor, air is truncated along the boundary layer that motor interior wall surface current moves using fourth born of the same parents, increase the Nu Saier coefficient of the inner surface, stator core inner surface, the inner surface of the outer surface of rotor core and rotor ventilation hole in air duct in base, the effect for reinforcing heat convection, improves the heat-sinking capability of motor；The air drag of respective surfaces is reduced simultaneously, is reduced thermal losses caused by friction, is effectively improved the stability, reliability and operational efficiency of motor.)

1. a kind of motor ventilation cooling structure based on fourth born of the same parents, it is characterised in that: including by wind inside air duct in base and motor The circulating air duct (9) and setting that road is constituted are used on motor output shaft (7) one end by the air-flow point in air duct inside motor It is dissipated to the fan (6) in air duct in base, air duct includes air gap and the rotor ventilation hole between stator and rotor inside the motor (8), in the wind path (9) with the multiple recess fourth born of the same parents being spaced apart from each other are provided on the partially or fully wall surface of air flow contacts (10)。

2. a kind of motor ventilation cooling structure based on fourth born of the same parents according to claim 1, it is characterised in that: the recess fourth Born of the same parents (10) are uniformly arranged in the outer surface of the inner surface of the inner surface, stator core (3) in air duct in base, rotor core (4) And the inner surface of rotor ventilation hole (8).

3. a kind of motor ventilation cooling structure based on fourth born of the same parents according to claim 1, it is characterised in that: the recess fourth The surface shape of born of the same parents (10) is spherical surface or cylindrical surface.

4. a kind of motor ventilation cooling structure based on fourth born of the same parents according to claim 1, it is characterised in that: the recess fourth Born of the same parents (10) are along arranged in a straight line.

5. a kind of motor ventilation cooling structure based on fourth born of the same parents according to claim 1, it is characterised in that: inside the motor Air duct further includes stator wind ditch (11), is provided in the leeward side wall surface of stator wind ditch (11) by the leeward of recess fourth born of the same parents (10) The gap that side surface is formed.

6. a kind of motor ventilation cooling structure based on fourth born of the same parents according to claim 1, it is characterised in that: the recess fourth The surface of born of the same parents (10) is provided with Heat Conduction Material coating.

7. a kind of ventilated machine, it is characterised in that: including base (1), output shaft (7), stator, rotor and circulating air duct (9), institute It states output shaft (7) to be arranged on base (1), stator setting is in base (1), and rotor is connected with output shaft (7), circulating air duct (9) it is made of air duct inside air duct in base and motor, air duct includes the air gap and rotor between stator and rotor inside motor Ventilation hole (8) is provided with the wind for the air-flow in air duct inside motor to be dispersed to air duct in base on one end of output shaft (7) Fan (6), in circulating air duct (7) with the multiple recess fourth born of the same parents being spaced apart from each other are provided on the partially or fully wall surface of air flow contacts (10)。

8. a kind of ventilated machine according to claim 7, it is characterised in that: the recess fourth born of the same parents (10) are uniformly arranged in The inner surface of the inner surface, stator core (3) in air duct in base, the outer surface of rotor core (4) and rotor ventilation hole (8) it is interior Surface；The recess fourth born of the same parents (10) are along arranged in a straight line.

9. a kind of ventilated machine according to claim 7, it is characterised in that: air duct further includes stator wind ditch inside the motor (11), the gap formed by the leeward side surface of recess fourth born of the same parents (10) is provided in the leeward side wall surface of stator wind ditch (11).

10. a kind of ventilated machine according to claim 7, it is characterised in that: the surface shape of the recess fourth born of the same parents (10) For spherical surface or cylindrical surface；The surface of the recess fourth born of the same parents (10) is provided with Heat Conduction Material coating.

Technical field

The present invention relates to the design and optimizations of electromotor cooling system, and in particular to a kind of motor ventilation based on fourth born of the same parents is cooling Formula radiator structure.

Background technique

Motor is a kind of device for converting electrical energy into kinetic energy, is widely used in daily life and industrial production.Electricity A variety of losses can be generated in machine operation process, increase the temperature inside motor, can not only reduce its operational efficiency, and can damage Bad equipment causes it to stop working.Therefore, the hot spot of the cooling always motor performance research of motor.

Ventilating and cooling is presently the most widely used motor cooling means, and air flows through mostly in this type of cooling Smooth motor component wall surface in wind path and take away heat, air flowing power source be generally adopted by it is same with motor output shaft Walk the fan of rotation, but air hydraulically smooth surface (for example, stator, rotor surface at base inner flow passage inner wall, air gap, and Rotor ventilation hole inner wall etc.) boundary layer can be generated, the cross-ventilation speed in boundary layer is extremely slow, influences heat transfer effect.

Chinese patent CN107070062A discloses the cooling line structure and its water-cooled machine of a kind of water-cooled machine, leads to The pipeline structure of design water cooling runner is crossed, so as to be changed to increase by arranging spherical male born of the same parents shape fourth born of the same parents on pipeline structure Heat area and destruction runner boundary layer, enhance the cooling performance of water-cooled housing.But water-cooling and it is not suitable for in motor Portion's rotor, stator etc. radiate, and spherical male born of the same parents shape fourth born of the same parents lead at fourth born of the same parents that flow path wall is projecting inward towards runner, increase Runner frictional resistance.And when being radiated using air to motor inside, lack effective dimpled surface design, still with full simultaneously Foot destroys air boundary in wind path and reduces friction (friction will lead to air and flow back in fan suction side).In addition, logical Air cooling is mainly to flow through the air-flow (for example, air) of wind path as heat dissipation vehicle, in addition to air gap, rotor ventilation hole, at present Still lack other effective motor internal heat dissipating accesses.Therefore, the radiating efficiency of motor ventilation cooling structure is in urgent need to be improved.

Summary of the invention

It is an object of the invention to overcome motor ventilation cooled radiator structure low efficiency, provide a kind of based on fourth The motor ventilation cooling structure and ventilated machine of born of the same parents.The motor ventilation cooling structure reduce reflux of the air-flow inside motor and It is lost as caused by gas current friction, while enhances motor radiating ability.

To achieve the goals above, the invention adopts the following technical scheme:

A kind of motor ventilation cooling structure based on fourth born of the same parents is followed including what is be made of air duct inside air duct in base and motor Ring wind path and be arranged on motor output shaft one end for the air-flow in air duct inside motor to be dispersed to air duct in base Fan, motor inside air duct include air gap and the rotor ventilation hole between stator and rotor, are connect in the wind path with air-flow The multiple recess fourth born of the same parents being spaced apart from each other are provided on the partially or fully wall surface of touching.

Preferably, the recess fourth born of the same parents be uniformly arranged in the inner surface of the inner surface, stator core in air duct in base, The outer surface of rotor core and the inner surface in rotor ventilation hole.

Preferably, the surface shape of the recess fourth born of the same parents is spherical surface or cylindrical surface, the dimensions of fourth born of the same parents, spacing distance Can revolving speed based on motor and fan wind speed optimize.

Preferably, the recess fourth born of the same parents are in the region of its arrangement along arranged in a straight line, the recess fourth of adjacent row or column The relative position of born of the same parents can wind speed based on motor infield locality and wind direction optimize.

Preferably, air duct further includes stator wind ditch inside the motor, the leeward side wall surface end of stator wind ditch is (with rotor It is provided with the gap formed by the leeward side surface of recess fourth born of the same parents relatively).

Preferably, the surface of the recess fourth born of the same parents is provided with thermostable heat-conductive material coating.

A kind of ventilated machine, including base, output shaft, stator, rotor and circulating air duct, the output shaft are arranged in base On, stator is arranged in base, and rotor is connected with output shaft, and circulating air duct is made of air duct inside air duct in base and motor, Air duct includes air gap and the rotor ventilation hole between stator and rotor inside motor, is provided on one end of output shaft for will be electric The air-flow in air duct is dispersed to the fan in air duct in base inside machine, in circulating air duct and on the partially or fully wall surface of air flow contacts It is provided with above-mentioned recess fourth born of the same parents.

The beneficial effects of the present invention are embodied in:

The present invention is made in motor operation course, air-flow (example by the way that recess fourth born of the same parents are arranged in the wind path of ventilated machine Such as, air) it is constantly destroyed inside motor along the boundary layer of wall surface, increase the Nu Saier coefficient of wall surface, strengthens heat convection. Meanwhile dimpled surface reduces the coefficient of friction of wall surface and air-flow, reduces reflux of the air-flow inside motor, decrease by It is lost caused by gas current friction.Therefore, the cooling performance of motor ventilation cooling structure can be improved in the present invention, to improve electricity Stability, reliability and the operational efficiency of machine, in addition, structure of the invention is simple, easy to process, suitable large-scale promotion is answered With.

Further, the present invention by the inner surface of base, the inner surface of stator core, rotor core outer surface and Uniform recess fourth born of the same parents are arranged in the inner surface in rotor ventilation hole, not only increase the radiating efficiency of motor ventilation cooling structure, And be conducive to realize dynamically balanced control in motor operating.

Further, the present invention enhances the radial heat dissipation of stator core by the way that fourth born of the same parents are arranged in stator wind ditch leeward side Ability increases effective thermal dissipating path inside motor, improves the radiating efficiency of motor ventilation cooling structure.

Detailed description of the invention

Fig. 1 is the overall structure diagram of motor in the embodiment of the present invention；Dotted line with the arrow is in (output shaft) in Fig. 1 And the flow direction in air air duct in rotor ventilation hole, air gap, base is respectively represented outside；

Fig. 2 is the schematic diagram of dimpled surface and its position in the embodiment of the present invention；Wherein: the air duct in base (a)； (b) stator core inner surface；(c) rotor core exterior surface；(d) dimpled surface；

Fig. 3 is the relative position schematic diagram of the fourth born of the same parents of stator core inner surface and stator wind ditch in the embodiment of the present invention；

In figure: 1. bases, 2. stator coils, 3. stator cores, 4. rotor cores, 5. rotor bars, 6. fans, 7. outputs Axis, 8. rotor ventilation holes, 9. wind paths, 10. fourth born of the same parents, 11. stator wind ditches.

Specific embodiment

The present invention is described in further details with reference to the accompanying drawings and examples, the embodiment is only used to explain this hair It is bright, rather than limiting the scope of the invention.

Referring to Fig. 1, motor of the invention includes base 1, stator, rotor, output shaft 7 and fan 6, and the stator includes fixed Subcoil 2, stator core 3 and stator wind ditch 11 (in order to reduce loss caused by the axial magnetic field that can not be done work in stator core, Stator core is formed by stacking by collar plate shape silicon steel sheet, and the gap between silicon steel sheet for ventilation is stator wind ditch 11, stator wind ditch 11 are oriented radial direction, and each stator wind ditch 11 is along the axial arrangement of stator core 3), the rotor 4 includes along axially through rotor iron The rotor ventilation hole 8 of core 4 and the rotor bar 5 axially extended for being embedded in 4 surface of rotor core (are located at rotor ventilation hole 8 outsides).The output shaft 7 is supported on base 1, and stator core 3 is fixed in base 1, and stator coil 2 is fixed on stator iron 3 both ends of core, rotor by output shaft 7 be fixed on the inside of stator core 3 and can the inner surface of relative stator iron core 3 rotate, rotor Multiple rotor ventilation holes 8 and rotor bar 5 be distributed on rotor core 4 along output shaft 7 is circumferentially-spaced.The motor uses Ventilating and cooling formula radiator structure, wind path 9 is by the air gap in base between air duct, stator core 3 and rotor, rotor ventilation hole 8 And stator wind ditch 11 is constituted, fan 6 is fixed on 7 one end of output shaft, so that air be made to flow to along the air gap and rotor ventilation hole 8 One end of installation fan 6 in base 1, and air duct in base is dispersed to by fan 6, by air duct in base in another in base 1 One end flows into the air gap and rotor ventilation hole 8, and air is made to form the air-flow circulated.

(color burn region is the region for arranging fourth born of the same parents) referring to fig. 2, the present invention is in base 1 inner surface (i.e. wind in base The inner surface in road, color burn region is specially tunnel inlet/outlet in base in Fig. 2 a), 3 inner surface of stator core (Fig. 2 b, Specifically splicing stator core each silicon steel sheet inner surface), 4 outer surface of rotor (Fig. 2 c, specifically between each rotor bar 5 4 surface of rotor core) and 8 inner surface of rotor ventilation hole machined the identical spherical depression shape fourth born of the same parents 10 of regularly arranged size (Fig. 2 d, fourth born of the same parents 10 arrange that the fourth born of the same parents 10 of adjacent rows are staggered certain distance using straight line, form diamond-shaped area arrangement).

Referring to Fig. 3, arrow be the air gap in air-flow direction, due to 11 end of stator wind ditch fourth born of the same parents 10 relative to The windward side for the convection current that fan 6 generates is increased through the conduction of stator wind ditch 11 to air mass flow (this inside stator core 3 Partial air is by 3 inner surface of stator core, pass through inside stator core 3 along stator wind ditch 11, finally along stator core 3 Outside reaches air duct in base), enhance the radial heat-sinking capability of stator core 3.

In above-mentioned motor operation course, output shaft 7 drives fan 6 to rotate, and generates the sky for being in reverse to stator 3 and rotor 4 Gas convection current (negative pressure that i.e. fan generates makes air flow to fan by air gap and rotor ventilation hole by the distal end relative to fan), Air between stator wind ditch 11, stator core 3 and rotor air gap and rotor ventilation hole 8 by inside motor, during this period 3 inner surface of stator core, 4 outer surface of rotor core, 8 inner surface of rotor ventilation hole fourth born of the same parents 10 form vortex, enhance with The convection current of air increases Nu Saier coefficient, passes stator core 3 and rotor core 4 more heats by surface It is directed at air, the heat-sinking capability enhancing of stator core 3 and rotor core 4, temperature is reduced, and air is after absorbing heat It is dispersed to base 1 via fan 6, by the heat exchange of fourth born of the same parents 10 enhancing and base 1 of the inner surface in air duct in base, passes heat It is directed at outside motor, at this point, air after cooling continues the negative pressure drainage formed due to fan 6 and to inside motor, reuptakes Heat, so as to form working cycles, make heat inside motor continuously by cross-ventilation heat exchange conduction to base 1 into Row heat dissipation.

The wind that motor ventilation cooled radiator structure (abbreviation air-cooled structure) proposed by the present invention is driven by the output shaft 7 Fan 6 drives air by wind path 9, and air is truncated along the boundary layer that motor interior wall surface current moves using fourth born of the same parents 10, increases in base The Nu Saier coefficient of air duct inner surface, 8 inner surface of 3 inner surface of stator core, 4 outer surface of rotor core and rotor ventilation hole, makes Air heat convection of each wall surface inside motor is strengthened, and the effect of heat convection is reinforced；Air duct in base is reduced simultaneously The air drag of inner surface, 8 inner surface of 3 inner surface of stator core, 4 outer surface of rotor core and rotor ventilation hole, makes motor Mechanical loss and thermal losses caused by friction are reduced while heat-sinking capability enhances.

When motor radiating critical issue to be solved is that its temperature field reaches stable state, base (temperature lowest part) with turn Sub- iron core (temperature highest point) has the huge temperature difference, and the water-cooling structure based on fourth born of the same parents that the prior art proposes is only to electric machine stand It is cooled down, to cooling insufficient inside motor.Air-cooled structure of the invention mainly enhances the heat inside motor with base Exchange, reduces the temperature difference, is promoted to cooling effect obvious.Meanwhile ventilated machine due to light-weight, structure is simple, to leakproofness It is required that it is lower relative to water-cooled machine, possess irreplaceability in fields such as automation, electric car, aerospaces.

In the present invention, since fourth born of the same parents constantly cutoff boundary layer and improve reflux and vortex problem inside motor, Keep the velocity flow profile in motor inner air flow field more uniform, reduce the friction between air, it is possible to reduce ventilated machine is made an uproar Sound can theoretically reduce by 3% or more.

In short, the present invention improves the stability, reliability, operational efficiency of motor by the cooling performance of raising motor, And have the advantages that structure is simple, easy to process, it is suitble to large-scale promotion to use.