CN1536739A - AC stepless variable power automatic speed-regulating motor - Google Patents
AC stepless variable power automatic speed-regulating motor Download PDFInfo
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- CN1536739A CN1536739A CNA2004100320326A CN200410032032A CN1536739A CN 1536739 A CN1536739 A CN 1536739A CN A2004100320326 A CNA2004100320326 A CN A2004100320326A CN 200410032032 A CN200410032032 A CN 200410032032A CN 1536739 A CN1536739 A CN 1536739A
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Abstract
The invention provides a kind of high efficient alternate infinitive power speed adaptation electric engine which outputs power according to the rotational speed cube, which is made up of engine shell, stator iron core, stator winding, inductive rotor, shaft adjusting mechanism of rotor iron core shaft and end cap. The iron core of the inductive rotor is made up of two laminations containing slot whose length ratio is from 1:2 to 1:4, the long iron core is the torque output iron core, the short iron core is slip power feedback iron core. The windings of the inductive rotor is made up of several independent coil which constitutes loop by themselves and they are insulated from each other used by the long and short iron core, each coil reverses the phase between the two iron cores and changes the pitch. The electric engine applies to fan, pump speed adjustment, the structure is simple, the price is low, and the efficiency is high.
Description
Affiliated technical field
The present invention relates to a kind of ac adjustable speed motor, the AC stepless that is particularly suitable for blower fan, water pump power-saving running becomes power from buncher.
Background technology
Stepless speed regulated AC of the prior art system, it is high efficiency having only tandem control and frequency control, but these have the governing system of attachment device to exist technical sophistication, cost an arm and a leg and exist multiple negative effect.For example: the high order harmonic component of electrically-actuated throttle device is not only polluted electrical network, also pollutes motor simultaneously; The power factor of cascade adjustable-speed system has only about 0.55.
In the buncher patent, the model machine that its various technical scheme is developed does not all reach the level of the electromagnetic adjustable speed motor that replaces the power consumption speed governing as yet at disclosed numerous AC stepless.
Summary of the invention
For the shortcoming and deficiency that overcomes high efficiency Alternating Current Governor System in the prior art, the invention provides that a kind of technology is simple, low cost of manufacture, speed efficiency height, and the AC stepless that does not pollute electrical network becomes power from buncher, use it for the reducing energy consumption of blower fan, water pump, can eliminate " low load with strong power " this unsolved for many years old problem effectively.
The object of the present invention is achieved like this: in the alternating current machine shell, stator core, stator winding, three-phase alternating current stator, inductiopn rotor, rotor core axial location regulating and controlling mechanism and front and rear cover are housed, it is characterized in that: the iron core of inductiopn rotor is the soft magnetism lamination that 1: 2 to 1: 4 and groove number equate or become multiple by the two segment length ratio that is fixed on the same rotating shaft, constitute the shared one-piece stator of the two iron leg hearts as silicon steel laminations.The winding of inductiopn rotor is made up of shared a plurality of mutually insulateds of long and short iron core and the absolute coil that has the loop of one's own, each independently coil on long iron core, turn to the ultrashort pitch of 1/4 to 3/4 pole span, and between the two iron leg hearts anti-phase 180 degree electrical degrees and change pitch in the gap of broad, with full pitch or near the long and short pitch of full pitch in short groove unshakable in one's determination.
When short iron core all is moved out of the stator core inboard, and long iron core all enters stator core when inboard, around lacking half coil in the core slots because of there not being the induction of stator rotating magnetic flux, does not produce induced potential E
2s, at this moment whole rotating magnetic flux of stator all are coupled with long iron core, and chain is around the coil rotation in the long core slots, and is similar to common induction machine, can make rotor produce torque greatly under high speed, drags blower fan high-efficiency operation under high rotating speed.When gradually short shift-in stator unshakable in one's determination inboard, and part is long unshakable in one's determination when the other end shifts out stator, part magnetic flux on the long iron core is transferred on the short iron core, coil electromotive force in the long core slots is descended, coil electromotive force in the short core slots raises, the coil of adding in the short core slots is the whole coil of high induced potential, the induced potential of coil on unit length unshakable in one's determination is than the high several times of the coil in the long core slots, because it is long, short shared coil unshakable in one's determination is anti-phase 180 degree electrical degrees between the two iron leg hearts, so in having the insulated coil in loop of one's own, the difference of its electromotive force is only the electromotive force that forms electric current in the loop.This special rotor winding structure can make the electric current I of inductiopn rotor
2Hurried the reducing along with short shift-in stator core unshakable in one's determination inboard, finally reach two same frequencys that make two ends in each insulated coil, the anti-phase electromotive force that amplitude equates, be connected in the closed-loop path with external insulation, can not produce rotor current I no matter the revolutional slip of inductiopn rotor is much
2
Electric current on the inductiopn rotor in each insulated coil, it all is rest potential by long stack of lamination, be that long and short sum electromotive force unshakable in one's determination produces, because of each coil is all being lacked in the core slots around arriving after the anti-phase 180 degree electrical degrees between the two iron leg hearts again, so the phase place of short electric current unshakable in one's determination is opposite with electric potential direction, and leading stator voltage phase place 90 degree electrical degrees, by this electric current the slip power of inductiopn rotor is directly fed back to the stator limit expeditiously.
By the servomotor that regulation and control and screw rod (24) are in transmission connection, just can regulate and control to exchange to become input power and the output torque of power stepless effectively from buncher, its inherent characteristic by blower fan is changed, thereby reach the purpose of step-less adjustment fan operation rotating speed.
Its subordinate feature is:
1. stator core is by being fixed on unshakable in one's determination and one period short unshakable in one's determination composition of the segment length of length than 1: 2 to 1: 3 on the housing, stator winding is to be made of the shared winding coil of the two iron leg hearts, and 2 effective edges of each coil all place, the space between the two iron leg hearts are turned round the turnback electrical degree.
2. a plurality of insulated coils that have the loop of one's own that long and short iron core is shared, also include the coil that is wound on the single or several paralleled conductor in the long and short core slots with flat copper enamelled wire, flat type aluminium wire, and all be welded on the shared short circuit end ring at a wherein end of rotor.
3. nonconducting insulating barrier is arranged between the sliver of cage rotor and the rotor.
4. center guide pin bushing (25) is arranged on rear end cap, endoporus have be provided with between the rear bearing of the center guide pin bushing (25) of groove and inductiopn rotor can be in center guide pin bushing (25) endoporus lining (26) in axial sliding, the back segment of lining endoporus is being fixed a cylindrical with collar a round nut to four ribs (17), muscle on nut (17) cylindrical, opening by the lining back segment, reach in the groove of center guide pin bushing, and the screw rod that matches with nut (24), between the rear end and rear end cap of screw rod, be assemblied on the rear end cap as the crossing cylinder roller bearing of completely adorning roller by radial-thrust bearing.
5. the rolling bearing (5) that can bear tilting moment is housed in the bearing chamber of front end housing (6), in the interior annular distance of bearing (5), is fixing an axle sleeve (4), the leaf spring (3) that the internal orifice dimension of axle sleeve (4) is used to the flexible transmission of welding more than 3.
6. the back spindle nose of inductiopn rotor has and holds the hole that screw rod (24) puts in, and preceding spindle nose (2) has the deep trouth that holds leaf spring.
7. the two iron leg hearts of inductiopn rotor are to be fixed on the hollow rotating shaft (38), the back shaft extension of inductiopn rotor is to be bearing on spindle nose (37) cylindrical that inwardly stretches out at the rear end cap center by crossing cylinder roller bearing, four-point contact ball, be fixed with 1 to 3 short sliding sleeve (33) in the endoporus of preceding shaft extension, the leaf spring (3) more than two is radially being welded in the endoporus stage casing of hollow shaft (38).
8. the guide groove of placement screw rod (24) and abnormity nut (35) is arranged on the cylindrical of the spindle nose (37) that inwardly stretches out of rear end cap, and there is the boss that blocks ring in the rotor rear bearing at the two ends of abnormity nut (35).
9. between the leading portion of hollow shaft (38) endoporus and/or back segment and the torque output shaft (39), the ball that rolls vertically in many inside and outside axial channels is arranged, in every pair of semicircular inside and outside raceway groove, columniform retainer is arranged between the ball of Pai Lieing vertically.The moment of torsion of inductiopn rotor is that a few row's steel balls by axially-aligned are delivered on the torque output shaft.Because ball bearing has or not the function of gap rolling-operation, makes inductiopn rotor can not have the gap transmission, can axially regulate and control inductiopn rotor neatly again.
10. the iron core of inductiopn rotor is to be made of the long and short two iron leg hearts that are fixed in the external rotor endoporus, has between internal stator and the casing to make stator core vertically relative to mechanism that external rotor moves.
The invention has the beneficial effects as follows:
1. because motor self energy high efficiency stepless speed regulation operation, with regulating the adjusting that fan operation speed directly realizes system condition, conditioning equipment in can the saving system is as the investment and the maintenance cost of the stepping motor of the air door of regulating air quantity and control air door and transmission mechanism thereof etc.
2. owing to become the power AC stepless and can start smoothly less than band blower fan under the rated current from buncher, can save various starting equipments, reduce the starting capacity of electric power system and improve motor useful life, investment and maintenance cost are descended significantly.
3. become the power AC stepless from the method regulating system operating mode of buncher, a large amount of electric energy that consume on barge board and valve are saved, and don't produce the high order harmonic component of polluting electrical network with the change rotating speed.
4. this makes great efforts unsolved always technical barrier through for many years to solve " low load with strong power " that extensively exist in blower fan, the water pump system, can increase substantially system effectiveness, saves energy and prolong service life of equipment.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is that AC stepless becomes power from the vertical section of first embodiment of buncher structural map.
Fig. 2 is that AC stepless becomes the vertical section structural map of power from second embodiment of buncher.
1. fan housings among the figure, 2. preceding spindle nose 3. leaf springs, 4. axle sleeve, 5. the crossing cylinder roller bearing on the front end housing, 6. front end housing bearing chamber, 7. fan, 8. front end housing, the 9. deep trouth of placing plate flat spring, 10. rotor winding, 11. epitrochanterian short unshakable in one's determination, 12. stator cores, 13. is epitrochanterian long unshakable in one's determination, 14. the threephase stator winding, 15. hold the hole of screw rod, the crossing cylinder roller bearing on the 16. rotor rear axles, 17. cylindrical has the round nut of muscle, the groove of 18. center guide pin bushing endoporus, 19. servomotors, 20. the servomotor gear, 21. block the collar of nut, the reduction gearing on 22. screw rods, 23. make the ball bearing of screw axial location, 24. screw rod, the center guide pin bushing on 25. rear end caps, 26 linings, 27. armature spindle, 31. the fan collar, 32. ball bearings, 33. short sliding sleeves, 34. radial-thrust bearing, 35. abnormity nut, 36. needle bearings, the hollow shaft head on 37. rear end caps, 38. hollow shaft, 39. torque output shafts.
Embodiment
In the embodiment shown in fig. 1, threephase stator winding (14) is embedded in the stator slot of stator core (12) and soaks insulating varnish; The rotor long (13) unshakable in one's determination of the shading ring between the rotor of 36 grooves short (11) unshakable in one's determination, the two iron leg hearts, 36 grooves is fitted on the armature spindle (27) by Fig. 1 sequence of positions, loads onto location collar unshakable in one's determination and carries out fine finishining; The shared insulation of the long and short iron core of coiling is from short-circuited coil, be embedded in 1/2 pole span in the long core slots of layer slot insulator, and between the two iron leg hearts anti-phase 180 degree electrical degrees and change pitch, be embedded in the short core slots by layer slot insulator with full pitch again and form rotor winding (10), the both ends of winding (10) with middle anti-phase section, after shaping and colligation, on cylindrical, reinforce and the dipping lacquer processing with no latitude band.
The stator core (12) that is wound with three phase windings (14) is press fit in the motor housing by Fig. 1 position; The interior ring of crossing cylinder roller bearing (16) is fitted in behind the sense rotor on the external diameter of spindle nose, and use the collar axial restraint, lining (26) is enclosed within on the spindle nose, the outer shroud of bearing (16), round nut (17) are successively put into the endoporus of lining (26), muscle on the nut cylindrical stretches out from the opening of lining back segment, and with collar (21) nut (17) is pressed on the outer shroud of bearing (16); Axle sleeve (4) is fixed in the interior ring of bearing (5), the outer shroud of bearing (5) and inside and outside bearing cap are pressed in the bearing chamber (6) of front end housing (8), make axle sleeve (4) by the crossing cylinder roller bearing spacing on front end housing high speed rotating, axle sleeve (4) can not only be born axially and radial load, also can bear very big tilting moment.
The rotor assembly of the nut (17) of lining (26) and push-and-pull inductiopn rotor will be housed, pack into the position of endoporus Fig. 1 of stator core, the front end housing (8) of axle sleeve (4) is housed, with the end cap screw on the seam of motor housing leading flank, the rear end cap that has center guide pin bushing (25), be screwed on the seam of motor housing trailing flank, be fixed on screw rod and the bearing box that is assemblied on bearing (23) outer shroud in the interior annular distance of bearing (23), be screwed on the side seam of center guide pin bushing (25), screw rod (24) is by reduction gearing (22), servomotor gear (20) is in transmission connection with the servomotor (19) of regulation and control inductiopn rotor rotating speed.
In embodiment illustrated in fig. 2, short (11) unshakable in one's determination of inductiopn rotor are to be fixed on the hollow rotating shaft (38) with long (13) unshakable in one's determination, the back shaft extension of inductiopn rotor is by the crossing cylinder roller bearing or with the deep groove ball bearing of 1 to 2 ultralight series, be bearing on spindle nose (37) cylindrical that inwardly stretches out at the rear end cap center, fixing 2 short sliding sleeves (33) in the preceding shaft extension endoporus, the endoporus of sliding sleeve is bearing on the external diameter in torque output shaft (39) stage casing, the endoporus stage casing of hollow shaft (38), radially welding three leaf springs (3) by 120 °, be pressed with ring in the ball bearing on the preceding shaft extension of torque output shaft (39) and with the fan (7) of collar axial location, the guide groove that placement screw rod (24) and abnormity nut (35) are arranged on the cylindrical of spindle nose (37), the two ends of abnormity nut (35) have the boss that blocks ring in the rotor rear bearing (16).Screw rod (24) with abnormity nut matches is in transmission connection with the servomotor (19) of regulation and control inductiopn rotor rotating speed by reduction gearing (22), servomotor gear (20).
Claims (11)
1. an AC stepless becomes power from buncher, by motor housing, stator core, stator winding, inductiopn rotor, rotor core axial location regulating and controlling mechanism and end cap are formed, it is characterized in that: the iron core of inductiopn rotor is that 1: 2 to 1: 4 the groove soft magnetism lamination that has constitutes by being fixed on two segment length ratio on the same rotating shaft, the shared stator of the two iron leg hearts, the winding of inductiopn rotor is by length, short unshakable in one's determination shared a plurality of mutually insulateds and the absolute coil that has the loop of one's own are formed, each independently coil on long iron core, turn to the ultrashort pitch of 1/4 to 3/4 pole span, and between the two iron leg hearts anti-phase 180 degree electrical degrees and change pitch in the gap of broad, with full pitch and near the length of full pitch, short pitch is in short groove unshakable in one's determination.
2. AC stepless according to claim 1 becomes power from buncher, it is characterized in that: stator core is by being fixed on unshakable in one's determination and one period short unshakable in one's determination composition of the segment length of length than 1: 2 to 1: 3 on the housing, stator winding is to be made of the shared winding coil of the two iron leg hearts, and 2 effective edges of each coil all place, the space between the two iron leg hearts are turned round the turnback electrical degree.
3. AC stepless according to claim 1 becomes power from buncher, it is characterized in that: a plurality of insulated coils that have the loop of one's own that long and short iron core is shared, also include the coil that is wound on the single or several paralleled conductor in the long and short core slots with flat copper enamelled wire, flat type aluminium wire, and all be welded on the shared short circuit end ring at a wherein end of rotor.
4. AC stepless according to claim 2 becomes power from buncher, it is characterized in that: nonconducting insulating barrier is arranged between the sliver of cage rotor and the rotor.
5. AC stepless according to claim 1 and 2 becomes power from buncher, it is characterized in that: center guide pin bushing (25) is arranged on rear end cap, endoporus have be provided with between the rear bearing of the center guide pin bushing (25) of groove and inductiopn rotor can be in center guide pin bushing (25) endoporus lining (26) in axial sliding, the back segment of lining endoporus is being fixed a cylindrical with collar a round nut to four ribs (17), muscle on nut (17) cylindrical, opening by the lining back segment, reach in the groove of center guide pin bushing, and the screw rod that matches with nut (24), between the rear end and rear end cap of screw rod, be assemblied on the rear end cap as the crossing cylinder roller bearing of completely adorning roller by radial-thrust bearing.
6. AC stepless according to claim 1 and 2 becomes power from buncher, it is characterized in that: the rolling bearing (5) that can bear tilting moment is housed in the bearing chamber of front end housing (6), in the interior annular distance of bearing (5), fixing an axle sleeve (4), the leaf spring (3) that the internal orifice dimension of axle sleeve (4) is used to the flexible transmission of welding more than 3.
7. AC stepless according to claim 1 and 2 becomes power from buncher, it is characterized in that: the back spindle nose of inductiopn rotor has and holds the hole that screw rod (24) puts in, and preceding spindle nose (2) has the deep trouth that holds leaf spring.
8. AC stepless according to claim 1 and 2 becomes power from buncher, it is characterized in that: the two iron leg hearts of inductiopn rotor are to be fixed on the hollow rotating shaft (38), the back shaft extension of inductiopn rotor is to be bearing on spindle nose (37) cylindrical that inwardly stretches out at the rear end cap center by crossing cylinder roller bearing, four-point contact ball, be fixed with 1 to 3 short sliding sleeve (33) in the endoporus of preceding shaft extension, the leaf spring (3) more than two is radially being welded in the endoporus stage casing of hollow shaft (38).
9. interchange according to claim 1 and 2 becomes power stepless from buncher, it is characterized in that: the guide groove of placement screw rod (24) and abnormity nut (35) is arranged on the cylindrical of the spindle nose that rear end cap inwardly stretches out (37), and there is the boss that blocks ring in the rotor rear bearing at the two ends of abnormity nut (35).
10. interchange according to claim 1 and 2 becomes power stepless from buncher, it is characterized in that: between the leading portion of hollow shaft (38) endoporus and/or back segment and the torque output shaft (39), the ball that rolls vertically in many inside and outside axial channels is arranged.
11. interchange according to claim 1 becomes power stepless from buncher, it is characterized in that: the iron core of inductiopn rotor is to be made of the long and short two iron leg hearts that are fixed in the external rotor endoporus, has between internal stator and the casing to make stator core vertically relative to mechanism that external rotor moves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100320326A CN1536739A (en) | 2003-04-10 | 2004-03-28 | AC stepless variable power automatic speed-regulating motor |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN03109988.2 | 2003-04-10 | ||
| CN03109988 | 2003-04-10 | ||
| CNA2004100320326A CN1536739A (en) | 2003-04-10 | 2004-03-28 | AC stepless variable power automatic speed-regulating motor |
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| Publication Number | Publication Date |
|---|---|
| CN1536739A true CN1536739A (en) | 2004-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004100320326A Pending CN1536739A (en) | 2003-04-10 | 2004-03-28 | AC stepless variable power automatic speed-regulating motor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064656A (en) * | 2010-11-24 | 2011-05-18 | 杨荷 | Rotor slippage complementary exciting permanent-magnetic brushless variable speed motor |
| CN102244444A (en) * | 2011-06-27 | 2011-11-16 | 上海动能重工制造有限公司 | Three-phase asynchronous motor with adjustable locked rotor torque |
| CN103986272A (en) * | 2014-03-06 | 2014-08-13 | 岳建华 | Squirrel cage type speed regulating motor changing stator and rotor magnetic field distribution |
| CN105379071A (en) * | 2013-04-05 | 2016-03-02 | 萨甘安全防护公司 | Electric motor having a low short-circuit torque, drive device with a plurality of motors and method for producing such a motor |
-
2004
- 2004-03-28 CN CNA2004100320326A patent/CN1536739A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064656A (en) * | 2010-11-24 | 2011-05-18 | 杨荷 | Rotor slippage complementary exciting permanent-magnetic brushless variable speed motor |
| CN102064656B (en) * | 2010-11-24 | 2012-07-25 | 杨荷 | Rotor slippage complementary exciting permanent-magnetic brushless variable speed motor |
| CN102244444A (en) * | 2011-06-27 | 2011-11-16 | 上海动能重工制造有限公司 | Three-phase asynchronous motor with adjustable locked rotor torque |
| CN105379071A (en) * | 2013-04-05 | 2016-03-02 | 萨甘安全防护公司 | Electric motor having a low short-circuit torque, drive device with a plurality of motors and method for producing such a motor |
| CN105379071B (en) * | 2013-04-05 | 2019-06-14 | 萨甘安全防护公司 | The method of electric motor with low short-circuit torque, the driving device with multiple motors and this motor of manufacture |
| CN103986272A (en) * | 2014-03-06 | 2014-08-13 | 岳建华 | Squirrel cage type speed regulating motor changing stator and rotor magnetic field distribution |
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