CN102820719A - Rotor with oil draining outlet - Google Patents
Rotor with oil draining outlet Download PDFInfo
- Publication number
- CN102820719A CN102820719A CN2012101827169A CN201210182716A CN102820719A CN 102820719 A CN102820719 A CN 102820719A CN 2012101827169 A CN2012101827169 A CN 2012101827169A CN 201210182716 A CN201210182716 A CN 201210182716A CN 102820719 A CN102820719 A CN 102820719A
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- China
- Prior art keywords
- group
- wavelet piece
- interlocking
- rotor
- plate
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/26—Rotor cores with slots for windings
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Compressor (AREA)
Abstract
The invention provides a rotor with an oil draining outlet. The invention also provides a motor. The rotor is made by several interlocking plates (9) that are stacked together. For purposes of improving stability and facilitating oil drainage by using the interlocking structure, one group of plates are connected through interlocking waviness components disposed at a first radial distance from a central axis of the rotor, while the other group of plates are connected through interlocking waviness components disposed at different radial distances from a central axis of the rotor.
Description
Technical field
The present invention relates to be used for the rotor of motor; Said rotor comprises stack of plates; Said stack of plates forms cylindrical-shaped main body and has around the rotational symmetric axis hole of central axis to let said main body rotation be suspended on the axle; Rotor comprises first group of plate of the first that forms main body and forms second group of plate axially going up relative second portion; Wherein have first diameter and have second diameter, through using at least one interlocking Wavelet piece the plate of each plate interlocking to vicinity greater than first diameter at the second portion central axis hole at first's central axis hole.
The invention still further relates to compressor with the motor that comprises this rotor and the method that in compressor, forms oil drain out.
Background technology
Usually the core of motor is made by steel plate layer (some insulators (for example varnish) layer is between said steel plate layer).Range upon range of structure prevents that vortex flow from heating said core.Piling up generally of lamination processed in progressive die, that is, rotor is produced in composite technology usually, in said composite technology:
-go out the separate metal part from steel plate,
-pile up steel plate,
-connect said steel plate through interlocking,
In the interlocking operation, the fraction of a plate is pressed in depression or the hole in the adjacent panel and forms the interlocking Wavelet piece thus, and two adjacent plates pin each other at said interlocking Wavelet piece place.Generally, rotor winding (for example becoming the mouse cage shape) is molded on the groove in the core of lamination, and said thus layer firmly held onto by the winding of moulding-and promptly, Wavelet piece should only keep stacked structure till the pressing mold operation finishes.
At the motor that is used for home appliances (for example refrigerator and refrigerator etc.), rotor is supported by axostylus axostyle with step structure or axle.Because the reason of this point, rotor has the hole, and said hole has two different radial dimensions, that is, said hole has with the step of said axle constructs the step structure that is complementary.
Because said step structure, the common residing position of interlocking Wavelet piece is not to be optimum from the expectation magnetic conductivity of rotor core.
Summary of the invention
A purpose of the embodiment of the invention provides the improved method that is used for the rotor of motor and the rotor that use is modified for the oil extraction purpose is provided.
Also a purpose is to improve the method that the plate in the rotor is coupled to each other.
Correspondingly; The present invention provides a kind of rotor in first aspect; Wherein the plate in first group of plate connects through first group of interlocking Wavelet piece in decentre axis first radial distance; And the plate in second group of plate connects through second group of interlocking Wavelet piece in decentre axis second radial distance, and second distance is less than first distance.
Because continuous hole has two radial dimensions, magnetic field is different in the first of rotor and second portion.Because Wavelet piece is positioned at different radial distance according to the present invention; Wavelet piece can be located such that they produce less negative effect to the magnetic field in each of first and second parts of rotor; Promptly; Wavelet piece in first can be arranged in only distance under the situation in the magnetic field of considering first, and the Wavelet piece in second portion can be arranged in only distance under the situation in the magnetic field of considering second portion.
About interlocking, following definition and term are applicable to whole file.Interlocking is such process, and wherein when the Wavelet piece in first plate in the plate was pressed in depression or the opening in the second adjacent plate, the element of two adjacent plate shapes pinned mutually.Wavelet piece generally forms the projection that is produced by plastic deformation.
If we consider the plate 1 in (being called plate 0, plate 1 and plate 2 here) that piles up three adjacent panel, in a surface of plate 1, make Wavelet piece, and plastic deformation forms depression or opening simultaneously in the apparent surface of plate 1.Depression in the plate 1 or opening can hold the Wavelet piece of plate 0 now, and the Wavelet piece of plate 1 can be accommodated in the depression or opening of plate 2.
Here, conventional interlocking refers to such technology, and wherein Wavelet piece becomes the latch shape, and this latch is cut down by slave plate top, thereby it has formed and said plate and the relative hinged end that is connected with the said plate free end in a plane not.That is, the planar section of plate and outwards the interface between the ledge be called as " hinge " here and outwards outstanding part is called as " latch ".
Generally, the first and second radial distance boths can be arranged so that the mechanically as close as possible axis hole of Wavelet piece.That is, the distance of Wavelet piece decentre axis can be depending on the size of axis hole.
Especially, have been found that second distance preferably can be greater than first distance, this is because the diameter in the hole in the second portion of rotor subject is bigger.
In addition, rotor can comprise the plate of the middle groups plate between the plate of the plate that is arranged in first group of plate and second group of plate.The plate of middle groups plate is connected with Wavelet piece in second group of Wavelet piece through the Wavelet piece in first group of interlocking Wavelet piece.In this way, first and second parts of rotor are connected by the plate of middle groups plate.
The middle groups plate can for example comprise the plate of the quantity between the 1-10, and perhaps it can comprise the plate of the quantity between the 5-25% of sum of the plate in the rotor.The middle groups plate can form the mid portion of main body, and it comprises the Wavelet piece of first group and second group interlocking Wavelet piece.
Interlocking Wavelet piece at least one group of Wavelet piece in first group and the second group of Wavelet piece can be preferably the quick Corpack Wavelet piece that Corrada company sells; With reference to http://www.eurotranciatura.it/eng/120_040.php. in one embodiment; Wavelet piece in two groups of Wavelet pieces all is quick Corpack Wavelet piece; And in another embodiment, one group of Wavelet piece in two groups of Wavelet pieces can be a traditional C orpack Wavelet piece.This makes it possible to utilize Wavelet piece to be used for the oil extraction purpose.
Particularly, the interlocking Wavelet piece (15,21) at least one group of Wavelet piece in first group and the second group of Wavelet piece is Fast Packet core (core pack) Wavelet piece or Corpack Wavelet piece fast.
Concerning each plate, at least one group of plate in first and second groups of plates can be by the interlocking of a maximum interlocking Wavelet piece.In other embodiments, concerning each plate, first, second can be by at least two Wavelet piece interlockings with at least one group of plate in the middle groups plate.
Sometimes, lubricating oil gets in the outer surface and the motor air gap between the inner surface of stator of rotor.This is a shortcoming, because it causes the power saltus step (watt jump) of system and performance to reduce (because the viscous drag between rotor and the stator).
In order to improve the performance of such motor, rotor is provided with oil drain out sometimes, in oil drain passage, is directed getting back to the oil groove below the motor through oil drain out lubricating oil.
Can comprise oil-drain pipe according to rotor of the present invention, said oil-drain pipe extends through at least a portion of main body, passes the first of main body particularly, and central axis hole has little diameter in said first.
Particularly, oil-drain pipe can extend between the step in the axial end portion of rotor and hole.Here, the step in hole is meant the axial surface of the step structure that is derived from the hole, that is, and and that surface that the part with second diameter in the part with first diameter in hole and hole is linked together.In this way, the oil of entering axis hole can be discharged from said step via the pipeline of the first of passing main body (axle of bent axle is installed in the axis hole there), therefore prevents oil this part discharge through axis hole.
According to the present invention, oil-drain pipe can be formed by the interlocking Wavelet piece at least in part.In this way, creating manufacturing, pile up the part with the composite technology of the said plate of interlocking oil-drain pipe.
In order to form the purpose of oil-drain pipe by Wavelet piece, possibly advantageously utilize conventional interlocking principle, according to conventional interlocking principle, the part of a plate is cut down by part and surperficial outwardly-bent away from plate.
In this structure, said hole, even they have held the latch of adjacent panel, still keeping for oil is being used to of opening wide to cross plate to discharge oil.In the process of making conventional interlocking structure, carry out two distinct operations.In first operation, stamp out circular hole on the slave plate, in stamping procedure subsequently, slave plate (except the hinge place) is gone up and is discharged said latch.Latch stays oblong hole thus, and intersect with the circular port that at first forms in said Long Circle hole.The hole that obtains becomes or at least in principle as keyhole, has from the extended Long Circle arm of circle.Here, we are called this structure in " circle and arm " shape hole.Because through utilizing conventional interlocking structure to improve the discharge ability, such structure is used for rotor first and second and mid portion at least one part and possibly be favourable with the purpose that the opening of these interlocking Wavelet pieces is used to discharge.
Particularly advantageous possibly be to utilize conventional interlocking structure to come the first of assemble rotor, and the discharge line of the first of passing main body is provided thus.In this embodiment, thus particularly advantageous possibly be the equipment interlocking structure it on the said step in hole, be visible.In this embodiment, can highlight or the said plate of outstanding equipment in foregoing through making " circle and arm " shape hole, make that a circular part is visible on the said step in hole, arm then is hidden in below the plate of first of main body.
Generally, discharge line can preferably be hidden in below the plate of first of main body, is visible thereby on the said step in hole, have only to ducted entering opening.
In order to improve stability of structure, hinge preferably can be with respect to latch and with respect to the said hole displacement of holding latch.The displacement of hinge is on deep direction, promptly towards the direction of long radius more.
Because different radial distance; Can form the part (for example extending through first) of rotor oil extraction or passing away at the Wavelet piece of a radial distance; And another interlocking Wavelet piece can provide the radial distance of superior joint, that is, general in bigger radial distance.
The interlocking Wavelet piece that forms at least a portion of discharge line or pipeline can be arranged to the coiled coil pattern especially.When rotor rotated along the specific direction with respect to said coiling pattern, this allowed bigger discharge ability.For example, said pattern can be included in the Wavelet piece that (for example 16.5 degree) rotate in 15-20 degree scope on 80-100 the plate.
In second aspect, the invention provides a kind of motor, particularly air compressor motor, comprise rotor according to front description and place like this claimed.
When particularly combining to have the motor of bell-shaped rotor; When for example combining to have the motor of the one-sided bearing that is used to hang rotor; Promptly; When being used for the typical compressor motor of refrigerator etc., need avoid or reduce oil or the refrigerant in air gap at least, to be applied to epitrochanterian viscous drag minimum so that make.This extra-urgent needs are to be caused by rotor and the very little air gap between the stator of operated by rotary motion in this type of motor.
The rotor of motor can be particularly suitable for along the rotation direction rotation of the coiled coil pattern of coupling interlocking Wavelet piece, thereby this pattern is convenient to discharge oil through Wavelet piece when rotor rotates.That is, when rotor rotation, for example clockwise rotate, oil or refrigerant can be interweaved with getting rid of to the passage outside and by the further downward admission passage neutralization of the pulling force of gravity and enter into oil groove by centrifugal force, promptly in the bottom of compressor.
In the third aspect; The present invention provides a kind of method of discharging oil through the part of rotor; Said rotor comprises a plurality of plates that utilize the interlocking Wavelet piece and assemble; This method comprises: the tap of first group of Wavelet piece as oil is provided, and is provided at second group of Wavelet piece from the central axis different radial distances place of motor rotation.
Description of drawings
Present mode is by way of example described the present invention with reference to accompanying drawing, in the accompanying drawings:
Fig. 1 and 2 illustrates the perspective view according to rotor of the present invention;
Fig. 3 illustrates according to cross section of rotor of the present invention;
Fig. 4 illustrates the top view of rotor;
Fig. 5 illustrates the plate that is used to make the first that rotor piles up;
Fig. 6 illustrates the plate that is used to make the mid portion 13 that rotor piles up;
Fig. 7 illustrates the plate that is used to make the second portion 11 that rotor piles up;
Fig. 8 illustrates the enlarged drawing of a Wavelet piece in first group of Wavelet piece; With
Fig. 9,10 illustrates the alternate embodiment of rotor.
Embodiment
From following specific descriptions and specific examples, further range of application of the present invention will become obvious.Yet; Should be appreciated that; Specific descriptions and specific examples are presented only as illustration, because various changes and modification within the scope of the present invention will become obvious for a person skilled in the art according to these specific descriptions when the preferred embodiments of the present invention are shown.
In compressor, rotor is suspended on unshowned vertical axes or the axostylus axostyle.Said axle extends downwardly into from the top the hole, enter into the first 5 of rotor from last axial end portion 4, and referring to Fig. 3, it illustrates cross section of rotor.In first 5, hole 2 has big diameter.
Axle further extends in the second portion 6, states hole 2 in second portion 6 places and has less diameter.In this part of rotor, axle generally is press fitted into said hole, thereby rotor is firmly assembled with axle.Because axle is press-fitted in the small diameter portion in hole, can prevent that oil is from discharge between the inner surface 7 in said axle and hole 2.
Typically, said axle extends to lower axial end 8 outsides and forms and is impregnated into the Tapered Cup in the oil groove, and oil is pumped in the axle straight up thus.
In operation, the said oil of pumping that makes progress of the rotation through said axle, oil can turn back to oil groove under the effect of gravity.In above-mentioned circulation, oil will get into the major diameter part in hole 3.
Fig. 1 and 2 illustrates rotor with line 9 and 10 and has first 12 and second portion 11, states in first 12 places that the hole has less diameter and plate is connected by the interlocking Wavelet piece in first group of Wavelet piece; Second portion 11 is in the opposed end of rotor and have a corresponding bigger diameter.Second portion comprises the plate that is connected by second group of interlocking Wavelet piece.
Between first and second portion, rotor has mid portion 13, is assembled by the interlocking Wavelet piece of first and second types at plate described in the mid portion.
Groove 14 is used for the rotor winding, and winding typically is the mouse cage shape, directly is molded in the said groove.
An interlocking Wavelet piece 15, that is, the interlocking Wavelet piece of first group of interlocking Wavelet piece is visible on the upper axial end 4 that rotor piles up.
Rotor piles up and forms two oil- drain pipes 16,17, and each oil-drain pipe extends through at least a portion of main body.Pipeline 16,17 starts from said step 18 places in the transition portion between the big and minor diameter in hole 2, and extends to lower axial end 8.
Begin the place at pipeline, because projection 19, inlet is hidden in by part below the plate of first.For improved oil extraction possibility is provided, first group of plate can comprise breach 20, can also be with reference to figure 5, thus pipeline is exposed.Figure 10 illustrates alternate embodiment, and breach wherein is not set in first, and pipeline is covered by part thus.
As following further explanation, oil- drain pipe 16,17 is formed by the interlocking Wavelet piece.
Fig. 4 illustrates the top view of the rotor of seeing from the top.In the figure, see the entering opening 20 that is covered by part that enters at pipeline 16,17 easily.
Fig. 5 illustrates the plate that is used to make the first 12 that rotor piles up.Said plate is perhaps assembled with the interlocking Wavelet piece of any amount and any kind with for example (for example quick corpack type) single Wavelet piece assembling.
Fig. 6 illustrates the plate that is used to make the mid portion 13 that rotor piles up.Said plate is with for example (for example corpack type 15) fast two groups of Wavelet pieces and in plate, form regular corpack Wavelet piece 21 assemblings in hole 22.Hole 22 forms in the pipeline 16,17 above-mentioned.
Fig. 7 illustrates the plate that is used to make the second portion 11 that rotor piles up.Said plate is with for example (for example conventional corpack type) single Wavelet piece or one group of Wavelet piece 21 assembling, thereby hole 22 forms pipeline 16,17.
Fig. 8 illustrates one enlarged drawing in the Wavelet piece 15 of one and second group Wavelet piece in the Wavelet piece 21 of first group of Wavelet piece.Wavelet piece 21 comprises the latch that is connected to plate 25 24 in the hinge 26.Hinge is with respect to latch and with respect to radially outwards displacement of the said hole that holds latch.In fact, hinge only is the part away from the bandy plate in plane of plate.
Fig. 9,10 illustrates above-mentioned embodiment, and the inlet that wherein arrives pipeline 16,17 is covered by part.
Claims (14)
1. rotor (1) that is used for motor; Said rotor comprises stack of plates; Said stack of plates forms cylindrical-shaped main body and has around the rotational symmetric axis hole of central axis (3) (2) so that said main body rotation is suspended on the axle; Said rotor comprises first group of plate of the first (12) that forms said main body and the second group of plate that forms axially relative second portion (11), wherein has first diameter at first's central axis hole (2), has second diameter greater than said first diameter at the second portion central axis hole; Through utilizing at least one interlocking Wavelet piece (15,21) with each plate interlocking to adjacent plate
It is characterized in that; Said plate in first group of plate is connected by the first group of interlocking Wavelet piece (21) in decentre axis (3) first radial distance; Said plate in second group of plate is connected by the second group of interlocking Wavelet piece (15) in decentre axis (3) second radial distance, and second distance is greater than first distance.
2. rotor according to claim 1, wherein both are connected the plate of middle groups (13) by the Wavelet piece (15) in the interlocking Wavelet piece (21) in said first group of interlocking Wavelet piece and the said second group of Wavelet piece.
3. rotor according to claim 1 and 2, wherein the interlocking Wavelet piece (15,21) at least one group of Wavelet piece in first group and the second group of Wavelet piece is quick Corpack Wavelet piece.
4. according to each described rotor in the aforementioned claim, wherein the interlocking Wavelet piece (15,21) at least one group of Wavelet piece in first group and the second group of Wavelet piece is conventional interlocking Wavelet piece.
5. according to each described rotor in the aforementioned claim, wherein concerning each plate, at least the first group plate is by the interlocking of a maximum interlocking Wavelet piece.
6. according to each described rotor in the aforementioned claim, wherein concerning each plate, at least the second group plate is by the interlocking of at least two interlocking Wavelet pieces.
7. according to each described rotor in the aforementioned claim, comprise the oil-drain pipe (16,17) of at least a portion that extends through main body, said oil-drain pipe (16,17) is formed by interlocking Wavelet piece (21) at least in part.
8. according to each described rotor in the aforementioned claim, wherein second group of interlocking Wavelet piece forms the pattern of coiled coil in the first of main body.
9. according to each described rotor among the claim 7-8, wherein oil-drain pipe is hidden in plate following of second portion (11) and comprises the ducted entering opening that enters on the transition portion (18) in the first of rotor and the hole between the second portion.
10. according to each described rotor in the aforementioned claim; Wherein the Wavelet piece in one group of Wavelet piece at least the first group and the second group of Wavelet piece comprises the latch (24) of the plate (25) that is connected in the hinge (26), and wherein said hinge is with respect to latch with respect to radially outwards displacement of the said hole that wherein holds said latch.
11. a motor comprises according to each described rotor in the aforementioned claim.
12. motor according to claim 11; Its rotor is suitable in rotational direction rotating; Wherein second group of interlocking Wavelet piece forms the coiled coil pattern when the said rotation direction in rotor edge is rotated, and coil direction is convenient to oil through the discharge of the Wavelet piece in second group of interlocking Wavelet piece.
13. a compressor comprises according to claim 10 or 11 described motor.
14. method of discharging oil through the part of rotor; Said rotor comprises a plurality of plates that utilize the interlocking Wavelet piece to assemble; Said method comprises: the tap of first group of Wavelet piece as oil is provided, and at the central axis different radial distances place that rotates from motor second group of Wavelet piece is provided.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKPA201100425 | 2011-06-06 | ||
| DKPA201100425 | 2011-06-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102820719A true CN102820719A (en) | 2012-12-12 |
| CN102820719B CN102820719B (en) | 2014-11-12 |
Family
ID=47173491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210182716.9A Active CN102820719B (en) | 2011-06-06 | 2012-06-05 | Rotor with oil draining outlet |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102820719B (en) |
| DE (1) | DE102012010638A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6252329B1 (en) * | 1997-10-31 | 2001-06-26 | Zanussi Elettromeccanica S.P.A. | Rotor stack |
| US20060061227A1 (en) * | 2004-09-21 | 2006-03-23 | A.O. Smith Corporation | Spoke permanent magnet rotor |
| CN101145704A (en) * | 2006-09-15 | 2008-03-19 | 乐金电子(天津)电器有限公司 | Fixing structure of iron core of compressor motor rotor |
| DE102008038798A1 (en) * | 2008-08-13 | 2010-02-25 | Danfoss Compressors Gmbh | Asynchronous motor i.e. refrigerant compressor driving motor, has conductors connected with one another at front sides of body by ring with extension, where extension runs in circumferential direction and is guided into inner side of boring |
-
2012
- 2012-05-30 DE DE102012010638A patent/DE102012010638A1/en active Pending
- 2012-06-05 CN CN201210182716.9A patent/CN102820719B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6252329B1 (en) * | 1997-10-31 | 2001-06-26 | Zanussi Elettromeccanica S.P.A. | Rotor stack |
| US20060061227A1 (en) * | 2004-09-21 | 2006-03-23 | A.O. Smith Corporation | Spoke permanent magnet rotor |
| CN101145704A (en) * | 2006-09-15 | 2008-03-19 | 乐金电子(天津)电器有限公司 | Fixing structure of iron core of compressor motor rotor |
| DE102008038798A1 (en) * | 2008-08-13 | 2010-02-25 | Danfoss Compressors Gmbh | Asynchronous motor i.e. refrigerant compressor driving motor, has conductors connected with one another at front sides of body by ring with extension, where extension runs in circumferential direction and is guided into inner side of boring |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102012010638A1 (en) | 2012-12-06 |
| CN102820719B (en) | 2014-11-12 |
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