CN101852093B

CN101852093B - Mini elliptic gear engine

Info

Publication number: CN101852093B
Application number: CN200910104026XA
Authority: CN
Inventors: 尚世群
Original assignee: Individual
Current assignee: Xie Kun
Priority date: 2009-06-08
Filing date: 2009-06-08
Publication date: 2012-07-04
Anticipated expiration: 2029-06-08
Also published as: CN101852093A

Abstract

The invention relates to a mini elliptic gear engine with a few of components. The complete engine is in the shape of a cylinder and is fixed by housing bolts; a transmitting system consisting of an output shaft, a gear shaft, an up-down duplicate gear and inner gears on rotors is arranged in the engine; the engine cylinder comprises two opposite rotors and an inner wall of the shell; and the ignition system and the gas exchange system comprise a thermal fire head and a air inlet/outlet on the shell. When the elliptic gear of the output shaft, the duplicate gear and the inner gears of the rotors are meshed with each other, the periodic variation of a force arm between the two rotors and the output shaft will occur so as to push the output shaft to rotate by the gas expansion force, thus forming the engine.

Description

Mini elliptic gear engine

One technical field

The present invention relates to a kind ofly constitute the tiny engine of transmission system by elliptic gear, it is few to relate in particular to a kind of parts, no linkage mechanism, and it is shockproof to turn round, and can be applicable to the miniature four stroke engine of model plane or fuel cell.

Two background techniquies

In the at present existing tiny engine; Technology is ripe is mainly miniature single cylinder reciprocating engine, miniature rotary polygonal piston engine, miniature turbine jet engine; Wherein the single cylinder reciprocating engine is to be derived out by the two-cycle engine reduced volume of motorcycle; Though many decades has been experienced in its development, because the defective of two-cycle engine self, inevitably can there be a lot of problems in minitype piston formula motor.Scavenging way such as using two strokes makes it seriously polluted, and the part inflammable gas is unignited just discharges and make its oil consumption excessive, and each burning is used all is that the mixed gas of new gas and last waste gas makes the reduction of complete machine power.The up-and-down reciprocating motion of cylinder makes it that very strong vibrations arranged, and reciprocatory motion makes the complete machine limit speed reduce again.What general minitype piston motor used is that showing tremendous enthusiasm head is lighted a fire, and gaseous combustion is to cooperate igniting with cylinder pressure by the hot on the height of anger crow silk of delaying time of heat, and be difficult to grasp firing time, is easy to too early or causes evening excessively the reduction of complete machine power.Frictional force between piston and cylinder is very big when work in addition, also will in fuel, add the purpose that the special engine oil power of reducing friction reaches increases machine life during use.The miniature rotary polygonal piston engine that occurred in several years to the greatest extent in the model plane shows remarkably than single cylinder reciprocating engine, and its power is more a lot of greatly than single cylinder reciprocating engine, and its limit speed is high more a lot of than single cylinder reciprocating engine in the running.But there is also very big defective.Eccentric rotary such as using three-apexed rotor realizes continuous running, and the vibrations that its eccentric rotary is brought are inevitably, and the kind of drive of cylinder its power when expanding makes its torsion very little in addition, only reaches very high rotating speed, and horsepower just embodies to some extent.The formed cylinder shape of three-apexed rotor is long and narrow, and combustion efficiency is reduced.In addition cooperating between its distinctive cylinder shape and rotor, make sealing problem be difficult to be resolved, need special material and equipment just can carry out manufacturing.In above three kinds of motors, also having one type is the miniature turbine jet engine, and this machine often is used to be assemblied on the aeromodelling airplane, is divided into pulsed motor or turbojet engine, and its advantage is that volume is little, and power is big, and rotor rotates without acceptance of persons.But its shortcoming is fatal, and turbojet is a high-speed rotation of leaning on high speed rotor, utilizes the air stream of high-pressure injection to produce thrust, and its oil consumption is quite high, makes the hang time of model plane shorter, and the life-span of this motor is short more a lot of than common engine in addition.During fabrication, materials used is more difficult more than common engine with difficulty of processing, and it also is difficult to be applied on the fuel cell of low temperature environment or low fuel consumption.

Three summary of the invention

In order to produce the easy and dynamical tiny engine of a kind of production, the present invention proposes brand-new solution.The present invention has only constituted a high-power tiny engine that rotates without acceptance of persons by several parts.Complete machine is by shell, and the power train in two opposed rotors, rotor is formed jointly.In order to reduce the complete machine parts; Power train only is made up of 4 members, and its output of promptly being responsible for power realizes the alternate rotation between rotor again, is meshing with each other and is formed by the output shaft that has two elliptic gears, two duplicate gears, gear shaft, epitrochanterian internal gears; Elliptic gear on the output shaft is meshed with elliptic gear on the duplicate gear; Ratio is 1: 1, and the sun gear on the duplicate gear is meshed with epitrochanterian internal gear, and ratio is 1: 2.When output shaft rotates a week, the rotor rotation half cycle.In order to reduce machine volume the axle center of two rotors is removed, changed into sleeve rotor, transmission system is laid in its inside, and rotor is that axle journal is that axis hole rotates with the inner walls with the rotor outer wall.The complete machine cylinder is to be made up of jointly rotor, epitrochanterian trapping version, inner walls.The spark plug of being responsible for lighting gas changes showing tremendous enthusiasm head into; But model plane different from the past are used showing tremendous enthusiasm head; The present invention adopts the showing tremendous enthusiasm head that continues high heat to light a fire; Be to need not to take into account the too early or excessively problem in evening of igniting cleverly, the fuel of use is also very random, only needs that showing tremendous enthusiasm temperature is higher than burning-point and gets final product.As change ignition advance angle and then change the showing tremendous enthusiasm head position on housing and get final product, regardless of engine speed, its ignition timing is all very accurate.

The significant beneficial effect of the present invention is.

1. complete machine only is made up of several parts, and precision prescribed is low, manufactures easily, can be worked into the Centimeter Level size.

2. rotor is done in housing without acceptance of persons and is rotated, and complete machine is shockproof in the running and frictional force is very little.

3. cylinder does not have the ventilation valve mechanism, reduces noise, reduces machine volume.

4. the rotation of rotor does not have to-and-fro motion, makes the complete machine limit speed very high.

5. 4 cylinders are arranged in the complete machine, and this tiny engine is equivalent to 4 Cylinder engines, and power-weight ratio is very big.

6. when rotor rotation one during week, output shaft rotated for two weeks, even scavenging efficiency is still fine when high-speed rotation.

7. ignition system only need make showing tremendous enthusiasm head continue high hot getting final product, and need not to look after and guide the mixed gas ratio, need not to install automatically controlled firing circuit.

8. power train is in inside, and burning system is around power train, and cooling system is made up of shell, and complete machine respectively is an independence.

With scavenge port by a pair of when changing two pairs into, the present invention promptly changes pump or pneumatic equipment into.

10. only need during ato unit earlier showing tremendous enthusiasm head is become high hot state, rotary output axis gets final product again.Need not to take into account and use which kind of fuel, engine start is very easy to.

Four description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is further specified.

The all angles figure of Fig. 1 complete machine outward appearance

Fig. 2 motor is dissected schematic representation

Fig. 3 power train member schematic representation

Fig. 4 rotor component schematic representation

Fig. 5 power train and rotor scheme of installation

Fig. 6 gear ratios figure

Fig. 7 engine housing schematic representation

Each parts of Fig. 8 launch schematic representation

Fig. 9 four-stroke acting schematic diagram

Figure 10 four-stroke acting principle table

Figure 11 rotor alternate rotation schematic diagram

Figure 12 rotor alternate rotation principle table

8. showing tremendous enthusiasm 9. loam cakes of 4. times duplicate gears of duplicate gear, 5. upper rotor part 6. lower rotor parts, 7. housings, 10. lower covers, 11. housing bolts, 12. output shaft holes, 13. gear axis holes, 14. duplicate gear holes, 15. relief openings, 16. suction ports on 1. output shafts, 2. gear shafts 3. among the figure

Five embodiments

1. the various parts of motor

As shown in Figure 1, be the complete machine schematic appearance, from figure, can clearly recognize this motor be one cylindric, the output shaft two ends are positioned at two sides up and down of cylinder, but it is not in center position of side circle, but amesiality.Motor is equipped with two gas ports on the circumferential surface of cylinder, be respectively suction port, relief opening, and gas port is positioned at a side of circumferential surface, and opposite side is equipped with a showing tremendous enthusiasm head and is used for being responsible for igniting.Around motor, bolt is installed, complete machine is fixed.

As shown in Figure 2; Internal anatomy schematic representation for complete machine; From figure, can clearly recognize major technique characteristic of the present invention; Wherein output shaft (1) passes loam cake (9) and lower cover (10) and can in body, rotate, and gear shaft (2) is parallel with output shaft (1) and be fixed in the middle of them by loam cake (9) and lower cover (10).On output shaft, also be provided with two elliptic gears; Elliptic gear can not rotate around output shaft; On gear shaft (2), be with two duplicate gears (3) (4), duplicate gear (3) (4) can rotate around gear shaft (2), is installed in the inside of two rotors (5) (6) by the power train that constitutes with upper member.Be provided with internal gear in the rotor annulus, motor connects two duplicate gears by output shaft just, and two duplicate gears connect epitrochanterian internal gear up and down again, just makes the power after gas expands be able to continuous output.

As shown in Figure 3, be the member schematic representation of power train, power train of the present invention only has 4 members, is respectively output shaft (1), gear shaft (2), last duplicate gear (3), following duplicate gear (4).Wherein also be provided with two elliptic gears (X) on the output shaft (Y), this elliptic gear (X) (Y) is positioned at the center portion of output shaft (1) axial length, and the skew certain distance, and can not rotate around output shaft.Center portion in gear shaft (2) axial length also is provided with axle bumper, is used for fixing duplicate gear (3) (4), when preventing that duplicate gear from rotating in the axial direction displacement.Wherein two duplicate gears (3) (4) external form is basic identical up and down, all is to be made up of side by side the elliptic gear (B) of a sun gear (A) with a skew certain distance.Elliptic gear (X) on elliptic gear (B) and the output shaft or (Y) number of teeth is identical with size.On duplicate gear (3) (4), be that the axle center is provided with a penetrating duplicate gear hole (14) with the center of sun gear (A), make it can be enclosed within gear shaft (2) and go up and rotate.

As shown in Figure 4, be the rotor part of motor, in motor, be provided with upper rotor part (5) and (6) two rotors of lower rotor part, and alternate rotation is carried out in two opposed combinations of rotor up and down.Two rotor shapes unanimities only need to produce two with same processing method adding man-hour, during installation opposed 180 degree of two rotors (5) (6) are merged to get final product.Sealing problem can be provided with the seal ring groove on the surface of contact of two rotors and seal ring gets final product in order to solve.When the profile of design rotor, in order to save volume, the rotor of motor does not design axle center hole among the present invention, the substitute is a cavity.Rotor is the annulus member that the center is empty shape just, and transmission system then is installed in its inside.The annulus inboard of two rotors (5) (6) all is provided with internal gear, and the internal gear number of teeth is (4A) 2 times of the number of teeth of sun gear (3A) on the duplicate gear (3) (4).On the circumferential surface of the outer ring of each rotor, opposed 180 degree also are provided with 2 gas barriers, and cylinder is made up of with epitrochanterian 4 gas barriers and inner walls the outer ring circumferential surface of two rotors (5) (6) just.This gas barrier is identical with piston action, makes expansive force pass to output shaft thereby when gas expands, promote rotor motion.

As shown in Figure 5, be the scheme of installation of power train and rotor, output shaft among the figure (1) is positioned at the rotor inboard; And run through rotor; It is inboard and parallel with output shaft (1) that gear shaft (2) also is placed in rotor, is with duplicate gear (3) in the top of gear shaft (1), thereunder is with down duplicate gear (4); Two duplicate gears are placed side by side; Middle separate, be provided with up and down two elliptic gears (X) in output shaft (1) central position (Y), wherein lean on last elliptic gear (Y) to be meshed with elliptic gear (3B) on the last duplicate gear by the axle bumper on the gear shaft (2); Wherein by under elliptic gear (X) be meshed with elliptic gear (4B) on the following duplicate gear, and the number of teeth ratio between elliptic gear is 1: 1.This moment, two duplicate gears (3) (4) were done variable motion when output shaft (1) uniform rotation, and promptly each duplicate gear rotational angular all is a cosine curve.And the speed of two duplicate gears is just opposite, and when one of them angular velocity was maximum, another angular velocity was minimum, and two duplicate gears are being done the speed change rotation all the time.Sun gear on the duplicate gear among the figure (3) (4) is a positive Knucle-gear (A); When rotating; Sun gear (3A) on the last duplicate gear (3) is meshed with the internal gear on the upper rotor part; Sun gear (4A) on the following duplicate gear (4) is meshed with the internal gear on the lower rotor part, thus can make output shaft when uniform rotation up and down two rotors do speed change and rotate, realize the volume-variation between cylinder.Be illustrated in figure 6 as wherein the ratio schematic representation between one group of gear; What be positioned at the left side among the figure is the elliptic gear (X) or (Y) on the output shaft; What be positioned at the right side is duplicate gear (3) or (4); Can find out that in the drawings its size of two intermeshing elliptic gears is identical with the number of teeth, sun gear (A) is 1: 2 with external its size of internal gear with gear ratio.So this motor is one week of rotor rotation when rotating, output shaft then rotated for two weeks.

As shown in Figure 7, be the housing parts of this motor, the shell of motor is made up of with lower cover (10) housing that is positioned at rotor periphery (7) and loam cake (9), and by being positioned at housing bolt on every side.Engine housing also can be used as cooling system and uses, and also is provided with a cover gas port in a side of housing circumference, be divided into suction port (15) and relief opening (16), and the gas port spacing slightly equals the highest thickness of piston.The height of housing equals two height after the opposed combination of rotor; Opposite side at the housing circumference is equipped with showing tremendous enthusiasm head (8); The showing tremendous enthusiasm head of this showing tremendous enthusiasm minitype piston formula motor different from the past; When engine operation, the burning-point that the spark coil on the showing tremendous enthusiasm head (8) is heated to high hot state and is higher than fuel get final product, and the material of its use can be considered the heat in the similar windproof lighter delay time tungsten filament or some resistant to elevated temperatures platinum alloy.On two lids (9) (10) up and down; Be respectively arranged with output shaft hole (12) and gear axis hole (13); Wherein output shaft hole (12) is a bigger slightly hole that penetrates loam cake (9) and lower cover (10), and its effect fixedly can lean out the output shaft two ends output shaft (1) time, and wherein gear axis hole (13) is smaller slightly hole; This hole need not to penetrate loam cake (9) and lower cover (10), only plays the effect that gear shaft (2) is fixing.

Be illustrated in figure 8 as the various parts of motor and launch schematic representation; In the middle of wherein being positioned at is transmission system; By output shaft (1), gear shaft (2), go up duplicate gear (3), duplicate gear (4) constitutes down, the periphery of transmission system is a combustion system, by upper rotor part (5) and four cylinders that lower rotor part (6) and housing (7) constitute promptly is; Ignition system is made up of the showing tremendous enthusiasm head (8) that is positioned on the housing (7); In the periphery of combustion system is the cooling system and the air exchange system of complete machine, is made up of with relief opening (15) suction port (16) housing (7), loam cake (9), lower cover (10), and machine shell gets final product by housing bolt (11) is fixing.Parts of the present invention are few, and precision prescribed quite reciprocating engine is much lower, be easy to carry out manufacturing.

2. the working procedure of motor

After with above unit construction, promptly accomplished the installation process of one four cylinder tiny engine, motor contains power train, lubricating system, igniting system, burning system, ventilation system, cooling system, inertial system, each big system.When ato unit, need earlier showing tremendous enthusiasm head energising, make heat on the height of anger the high heat of heat time-delay tungsten filament and greater than the fuel burning-point, rotary output axis gets final product ato unit again.

Motor after the startup is when work, and output shaft is uniform rotation, and rotor is that speed change is rotated.Be provided with elliptic gear and duplicate gear and rotor internal gear at engine interior, four cylinder volumes in the complete machine changed, realize four-stroke principle thereby intermesh between them.When gas expansion for doing work, gas tension is to act on the gas barrier of two rotors, and the active force on this moment two gas barriers is identical, but rotor still to folk prescription to rotating.The important component of realizing this rotating manner is exactly the elliptic gear on duplicate gear and the output shaft up and down.When gas expands; Because two elliptic gears up and down on the output shaft are meshed with elliptic gear on two duplicate gears up and down; The elliptic gear arm of force on output shaft the most in short-term, this moment, the elliptic gear arm of force on the duplicate gear was the longest, made one of them rotor be difficult to drive output shaft and rotated.And just at this hour another rotor institute meshed gears be easy to drive output shaft and rotate, indirect engagement each other again between these two rotors, it is mutual making its rotation.So one of them rotor be difficult to drive another rotor rotation, as between two rotors, applying two equal and opposite in directions simultaneously, during power in the opposite direction, then this moment, a rotor promptly drove another rotor rotation.Realize interactional because between rotor be by elliptic gear; So when rotating, the arm of force changes, after output shaft turns an angle; When the arm of force between two rotors is almost equal, acts on two epitrochanterian two power in the opposite direction and can't continue to promote rotor motion.Waste gas after expanding is discharged body, and this moment, rotor advanced by inertia, and this time along between.Afterwards, the arm of force produces difference again between rotor, can this moment differently is, originally passive rotor becomes rotor initiatively, and originally the rotor of active becomes passive rotor.Initiatively become passively between rotor like this, passively become the line period property variation of initiatively going forward side by side.When a rotor became passive rotor, the gas barrier position of its top just was positioned in the middle of suction port and the relief opening, and this moment, power rotor rotated expansion, discharge, suction, the compression process that the gas barrier that makes on it is realized gas.Its position just is positioned in the middle of suction port and the relief opening when it becomes passive rotor again, and passive rotor just becomes power rotor again and realizes above process, and whole process is gone round and begun again, so that motor is able to continuous running.

Like Fig. 9,10 are depicted as the ventilation principle figure of motor, suppose that output shaft is begun to start by 0 degree, and one of them epitrochanterian gas barrier is called after A1 respectively; A2, another epitrochanterian gas barrier called after B1, B2; When output shaft turns to 180 when spending, A1, B1 realizes aspirating stroke; B1, A2 realizes compression stroke; A2, B2 realizes expansion stroke; B2, A1 realizes exhaust stroke.When output shaft turns to 360 when spending, A1, B1 realizes compression stroke; B1, A2 realizes expansion stroke; A2, B2 realizes exhaust stroke; B2, A1 realizes aspirating stroke.When output shaft turns to 540 when spending, A1, B1 realizes expansion stroke; B1, A2 realizes exhaust stroke; A2, B2 realizes aspirating stroke; B2, A1 realizes compression stroke.When output shaft turns to 720 when spending, A1, B1 realizes exhaust stroke; B1, A2 realizes aspirating stroke; A2, B2 realizes compression stroke; B2, A1 realizes expansion stroke.Two rotors were got back to the home position again and were restarted next all stroke cycle this moment, this shows when rotor rotation one is all, and carried out stroke 16 times, output shaft rotated for two weeks, and engine output 4 times.Promptly when output shaft rotates a week, rotor rotation half cycle, engine output 2 times.So the present invention is a powerful tiny engine.

Like Figure 11, the 12nd, the alternate rotation schematic diagram between rotor.Shown in figure, suppose that output shaft and two rotors all just are in 0 degree position, and two epitrochanterian gas barriers are in closest approach, the interior stroke of each cylinder has all just finished and has been in the incipient stage of next stroke at this moment.When output shaft is rotated further and turns to 45 when spending, this moment A rotor rotation to 10 degree, B rotor rotation to 20 degree.When output shaft turns to 90 when spending, A rotor rotation to 15 degree, B rotor rotation to 75 degree.When output shaft turns to 180 when spending, A rotor rotation to 30 degree, B rotor rotation to 150 degree.Can find out that when the preceding half-turn of output shaft in a revolution, the A rotor rotation speed is slower, the B rotor rotation speed is very fast, and the cylinder volume in this moment complete machine changes, and 4 cylinders are just accomplished air inlet, air-breathing, compression, inflation process simultaneously.And when output shaft rotation 180 was spent, just epitrochanterian gas barrier of A and the epitrochanterian gas barrier of B position exchanged.When output shaft is proceeded to rotate, promptly accomplish the back half-turn of a revolution, output shaft turns to 225 when spending, A rotor rotation to 50 degree, B rotor rotation to 160 degree.Output shaft turns to 270 when spending, A rotor rotation to 105 degree, B rotor rotation to 165 degree.Output shaft turns to 360 when spending, A rotor rotation to 180 degree, B rotor rotation to 180 degree.During the back half-turn that can find out output shaft rotated, the A rotor rotation speed was very fast, and the B rotor rotation speed is slower, and continue simultaneously to carry out four strokes between cylinder this moment, and the rest may be inferred, and the four-stroke principle of having accomplished motor makes the running that complete machine can be continuous.

Described above is the principle of the present invention as motor; Output shaft of the present invention rotates and the volume-variation of its inner chamber body can reverse mutually; When the showing tremendous enthusiasm head with housing one side of the present invention also changes a cover gas port into; Make the complete machine housing be provided with two suction ports and two relief openings, then the present invention promptly changes a pump or the moving equipment of gas-liquid into.

Claims

1. mini elliptic gear engine, the complete machine parts few and its be shaped as cylindric, by the housing bolt; In motor by output shaft, on duplicate gear, down duplicate gear, gear shaft, rotor internal gear constitute the power train of motor; Constitute the cylinder of motor by two opposed rotors, inner walls; The igniting system and the ventilation that constitute motor by showing tremendous enthusiasm head on the housing and porting are; By the shell of motor as cooling system; When the internal gear of output shaft elliptic gear, duplicate gear, rotor was meshing with each other, the arm of force generating period property variation between two rotors and output shaft was rotated thereby make gas tension promote output shaft, constitutes motor; In motor; The parallel placement of gear shaft with output shaft; Be with duplicate gear and following duplicate gear on the gear shaft, and the elliptic gear on the output shaft is meshed with elliptic gear on the duplicate gear, its ratio is 1: 1; Sun gear on the duplicate gear is meshed with epitrochanterian internal gear, and its ratio is 1: 2; Its output of promptly being responsible for power of transmission system realizes the variation of volume between cylinder again.

2. mini elliptic gear engine according to claim 1 is characterized in that having on the output shaft in the power train up and down two elliptic gears, and said two elliptic gears up and down are non-central be fixed on the output shaft and can not rotate around output shaft; When reducing the complete machine parts; Make output shaft and said two elliptic gears up and down as a whole; When number of components is not limited, with said up and down two elliptic gears with acentric be enclosed within on the output shaft and keyway be set fix, it can not be rotated around output shaft.

3. according to the said mini elliptic gear engine of claim 2, it is characterized in that duplicate gear is that a sun gear and an elliptic gear constitute side by side, and the elliptic gear certain distance that will squint; The axle center hole of duplicate gear is established the center position of sun gear above that; Sun gear on the duplicate gear and rotor internal gear ratio are 1: 2, and elliptic gear on the duplicate gear and the elliptic gear ratio on the output shaft are 1: 1.

4. according to the said mini elliptic gear engine of claim 1, the structure that it is characterized in that rotor is the annulus member of a no axle center hole, is provided with internal gear in the annulus inboard, and 180 degree are provided with two gas barriers at the interval, the outside of annulus; Be provided with two opposed rotors up and down in the complete machine, and power train is installed internal rotor.

5. according to the said mini elliptic gear engine of claim 1; The burning system that it is characterized in that motor forms four cylinders jointly by two opposed placements of rotor and with inner walls; Seal ring by on two rotor surface of contact carries out gas seal, is lighted a fire by the showing tremendous enthusiasm head on the housing; Said two rotors are axle journal with its annular outer wall, are that axis hole carries out alternate rotation with the annular inner wall of housing, thereby make four cylinder volume generating period property variations realize four strokes.

6. according to the said mini elliptic gear engine of claim 1, it is characterized in that the ignition system that motor body one side is installed is a showing tremendous enthusiasm head that continues high heat, its material uses tungsten filament or the heat-resisting good platinum alloy with hot delay effect; When engine operation, only need make showing tremendous enthusiasm head continue high heat, temperature is higher than the fuel burning-point and gets final product.

7. according to the said mini elliptic gear engine of claim 1, it is characterized in that the ventilation system of motor is a suction port and relief opening that is positioned at housing one side; Gas port valveless mechanism, directly on housing, punching gets final product, and the spacing of gas port slightly equals the highest thickness of gas barrier on the rotor.

8. according to the said mini elliptic gear engine of claim 1, it is characterized in that the shell of motor is put by loam cake, housing, lower cover row arranged side by side, form by the housing bolt, and as cooling system; The height of housing equals two height after the opposed combination of rotor, and housing is inboard just to be mated for ring-type and with rotor exterior ring, on the outer circumference of housing, is respectively arranged with relief opening of a suction port and a showing tremendous enthusiasm head; The covers structure of motor is basic identical, all is provided with output shaft hole and gear axis hole.