CN105186819A - Rotor end cover of outer-rotor-type motor and outer-rotor-type motor with rotor end cover - Google Patents
Rotor end cover of outer-rotor-type motor and outer-rotor-type motor with rotor end cover Download PDFInfo
- Publication number
- CN105186819A CN105186819A CN201410271474.XA CN201410271474A CN105186819A CN 105186819 A CN105186819 A CN 105186819A CN 201410271474 A CN201410271474 A CN 201410271474A CN 105186819 A CN105186819 A CN 105186819A
- Authority
- CN
- China
- Prior art keywords
- rotor
- sidewall
- rotor endcap
- endcap
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention discloses a rotor end cover of an outer-rotor-type motor. At least an oil passing hole is formed in the rotor end cover. Each oil passing hole deviates from the center of the rotor end cover to the edge of the rotor end cover relative to the radial direction of the rotor end cover. Through arrangement of oil passing holes with a shape similar to a blade in the rotor end cover, wind resistance and noise during rotation of the rotor end cover are lowered.
Description
Technical field
The present invention relates to motor device field, especially relate to a kind of rotor endcap of external rotor electric machine and there is its external rotor electric machine.
Background technology
Point out in correlation technique, permanent-magnet synchronous external rotor motor, motor stator external diameter is less than rotor internal diameter, rotor is connected with axle by end cap, due to the work characteristics of compressor, need to offer oil through on end cap, both can reduce the temperature rise of motor, also can increase logical pasta and amass, but, after end cap has been opened oil through, rotor rotation can increase windage, reduces power of motor, and generation aerodynamic noise, when motor is used in compressor, produces adverse influence by the performance of compressor, and make compressor have larger noise.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.For this reason, one object of the present invention is the rotor endcap proposing a kind of external rotor electric machine, and the rotation windage of described rotor endcap is little, and aerodynamic noise is little.
Another object of the present invention is to propose a kind of external rotor electric machine with above-mentioned rotor endcap.
The rotor endcap of external rotor electric machine according to a first aspect of the present invention, described rotor endcap is formed with at least one oil through, wherein each described oil through departs from relative to the radial direction of described rotor endcap from the center of described rotor endcap towards the edge of described rotor endcap.
According to the rotor endcap of external rotor electric machine of the present invention, by arranging the oil through of similar blade shape in rotor endcap, thus the windage reduced when rotor endcap is rotated and noise.
Particularly, each described oil through comprises first to fourth sidewall, described the first side wall and described second sidewall are spaced apart from each other in the radial direction of described rotor endcap, described 3rd sidewall is connected between one end of described the first side wall and described second sidewall, and described 4th sidewall is connected between the other end of described the first side wall and described second sidewall.
Alternatively, described the first side wall and described second sidewall are respectively one section of circular arc on two concentric circless.
Further, the arc length of described the first side wall is less than the arc length of described second sidewall.Thus, gas smoothly can flow out oil through, reduces the windage that gas causes rotor endcap, reduces aerodynamic noise.
Again further, the curvature of described 3rd sidewall is less than the curvature of described 4th sidewall.Thus, gas more smoothly can flow out oil through, reduces the windage that gas causes rotor endcap, reduces aerodynamic noise.
Alternatively, the junction rounding off between described first to fourth sidewall.
Particularly, to be multiple and described multiple oil through be uniformly distributed along the circumference of described rotor endcap described oil through.
Further, the quantity of described oil through is odd number.Thus, rotor endcap is formed as Non-completety symmetry structure, makes the overall structure form of rotor endcap closer to triangle, thus makes rotor endcap structure more stable and have better rigidity.
Alternatively, described rotor endcap is the frustum cone structure of slab construction or bottom-open.Thus, when rotor endcap is the frustum cone structure of bottom-open, gas bottom-up through rotor endcap time, the lower surface of rotor endcap can play the effect of water conservancy diversion, air-flow more steadily, is smoothly flowed out, thus reduces aerodynamic drag and aerodynamic noise.
External rotor electric machine according to a second aspect of the present invention, comprises the rotor endcap of external rotor electric machine according to a first aspect of the present invention.
According to external rotor electric machine of the present invention, by arranging the rotor endcap of the external rotor electric machine of above-mentioned first aspect, thus improve the overall performance of external rotor electric machine.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Fig. 1 is the front view of the rotor endcap of external rotor electric machine according to an embodiment of the invention;
Fig. 2 is the front view of the rotor endcap of external rotor electric machine in accordance with another embodiment of the present invention;
Fig. 3 is the upward view not installing stator according to the external rotor electric machine of the embodiment of the present invention;
Fig. 4 is the upward view of the external rotor electric machine in Fig. 3.
Reference numeral:
1000: external rotor electric machine;
100: rotor endcap;
1: oil through; 11: the first side wall; 12: the second sidewalls;
13: the three sidewalls; 14: the four sidewalls;
2: installing hole;
200: stator core; 201: stator tooth; 202: stator slot; 203: armature winding;
300: machine shaft;
400: rotor core; 401: permanent magnet.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
The rotor endcap 100 of the external rotor electric machine 1000 of embodiment is according to a first aspect of the present invention described below with reference to Fig. 1-Fig. 4.
As shown in Figure 1, the rotor endcap 100 of the external rotor electric machine 1000 of embodiment according to a first aspect of the present invention.
Particularly, rotor endcap 100 can centered by the revolving body member that extends along the vertical direction of axis.Such as in the example of fig. 1, rotor endcap 100 is the frustum cone structure of bottom-open, now the wall of rotor endcap 100 is configured to the inclined-plane tilting upward extension along the radial direction of rotor endcap 100 from outside to inside, rotor endcap 100 is made substantially to be formed as umbrella shape, thus, when gas bottom-up through rotor endcap 100 time, the lower surface of rotor endcap 100 can play the effect of water conservancy diversion, air-flow more steadily, is smoothly flowed out, thus reduces aerodynamic drag and aerodynamic noise.
Certainly, the present invention is not limited thereto, such as in the figure 2 example, rotor endcap 100 can also be slab construction, as circular flat plate structure, now the wall of rotor endcap 100 is configured to the plane of the radial direction horizontal-extending from outside to inside along rotor endcap 100, makes rotor endcap 100 substantially be formed as horizontally disposed flat board, and rotor endcap 100 is projected as circle in horizontal plane.Here, it should be noted that, the shape of rotor endcap 100 can be arranged according to actual requirement, to meet design requirement better.
Further, rotor endcap 100 is formed with at least one oil through 1.As shown in figures 1 and 3, rotor endcap 100 is formed with multiple oil through 1, each oil through 1 runs through the wall of rotor endcap 100 all along the vertical direction, certainly, the present invention is not limited thereto, each oil through 1 can also run through the wall of rotor endcap 100 along the direction perpendicular to rotor endcap 100 wall thickness, wherein when rotor endcap 100 is slab construction, the structure of the oil through 1 obtained by above-mentioned two kinds of makes is identical.
Wherein each oil through 1 departs from relative to the radial direction of rotor endcap 100 from the center of rotor endcap 100 towards the edge of rotor endcap 100.Such as in the example of fig. 3, each oil through 1 all has a central configuration line, and oil through 1 is configured to form from center structural line along the circumference of rotor endcap 100 respectively to both sides extension expansion, has certain angle between central configuration line and the radial line stretcher of rotor endcap 100.
Preferably, central configuration line departs from towards the rightabout of the direction of rotation of rotor endcap 100.That is, when the inner of center structural line extends to the center of rotor endcap 100, tangent line is made in the inner crossing central configuration line, this tangent line is datum line, central configuration line is all positioned at the same side of datum line, and when rotor endcap 100 rotates, datum line is positioned at the front of central configuration line all the time, namely central configuration line is positioned at the rear of datum line all the time.Such as in the example of fig. 3, shape and the blade shape of oil through 1 are similar, thus when have gas bottom-up from oil through 1 through rotor endcap 100 time, the shape of oil through 1 can adapt to the flow direction of gas well, make gas more smoothly by rotor endcap 100, reduce gas to the windage of rotor endcap 100 and the noise that produces.Here, it should be noted that, blade can be understood as blade involved in field of fluid machinery, the blade of such as fan.
Particularly, when rotor endcap 100 is rotated, and when gas bottom-up from oil through 1 through rotor endcap 100 time, gas through oil through 1 has upwards and along the radially outer movement tendency of rotor endcap 100, and to have due to the inertia of gas along rotor endcap 100 circumference, the movement tendency contrary with rotor endcap 100 direction of rotation, when the shape of oil through 1 and the blade of fan similar time, the rotation of rotor endcap 100 is similar to the rotation of fan, thus gas can smoothly flow out oil through 1, and then the windage that reduction gas causes rotor endcap 100, reduce the aerodynamic noise of rotor endcap 100.
According to the rotor endcap 100 of the external rotor electric machine 1000 of the embodiment of the present invention, by arranging the oil through 1 of similar blade shape in rotor endcap 100, thus the windage reduced when rotor endcap 100 is rotated and noise.
In one embodiment of the invention, oil through 1 is multiple, and multiple oil through 1 is uniformly distributed along the circumference of rotor endcap 100.Such as in the example of fig. 3, rotor endcap 100 is formed with multiple oil through 1, multiple oil through 1 is evenly spaced apart each other in the circumference of rotor endcap 100, that is, angle between two oil throughs 1 of arbitrary neighborhood is equal, alternatively, the shape of multiple oil through 1 is identical, equal and opposite in direction, thus multiple oil through 1 is that similar Central Symmetry is arranged about the axis of rotor endcap 100, that is, after the angle of the angle between two oil throughs 1 that rotor endcap 100 turns over arbitrary neighborhood, can with do not rotate before rotor endcap 100 overlap.Like this, when rotor endcap 100 is revolving body, and when it is formed multiple about its axis be similar Central Symmetry distribution oil through 1 time, rotor endcap 100 is formed as similar Central Symmetry part, and then rotor endcap 100 has run stability, good working effect.
Certainly, the present invention is not limited thereto, multiple oil through 1 can not also be evenly arranged along the circumference of rotor endcap 100, and such as, multiple oil through 1 can also be radially spaced layout along rotor endcap 100.
Alternatively, the quantity of oil through 1 is odd number.Such as in the example of fig. 3, rotor endcap 100 is formed with five oil throughs 1, and five rotors are the distribution of similar Central Symmetry about the axis of rotor endcap 100, thus, rotor endcap 100 is formed as Non-completety symmetry structure, make the overall structure form of rotor endcap 100 closer to triangle, thus make rotor endcap 100 have good stability and rigidity.Certainly, the present invention is not limited thereto, according to the size of rotor endcap 100, the quantity of oil through 1 can also be arranged according to actual requirement, to meet design requirement better, such as, when the size of rotor endcap 100 is less, the quantity of oil through 1 can be three, when the size of rotor endcap 100 is larger, the quantity of oil through 1 can be seven, nine even more.
In addition, it should be noted that, " Non-completety symmetry " refers to: when odd number oil through 1 is uniformly distributed in rotor endcap 100, namely when odd number oil through 1 is the distribution of similar Central Symmetry about the axis of rotor endcap 100, do the plane that is crossed the axis of rotor endcap 100, when this plane is not crossing with any oil through 1, the quantity being so positioned at the oil through 1 of these plane both sides certainly will be different, thus make the overall structure of rotor endcap 100 be similar to triangle to there is the principle of stability and there is stability, and then make the rotor endcap 100 with odd number oil through 1 have good rigidity.
Further, with reference to Fig. 3, each oil through 1 comprises the first side wall 11, second sidewall 12, 3rd sidewall 13 and the 4th sidewall 14, the first side wall 11 and the second sidewall 12 are spaced apart from each other in the radial direction of rotor endcap 100, 3rd sidewall 13 is connected between one end (the A1 end such as shown in Fig. 3) of the first side wall 11 and one end (the A2 end such as shown in Fig. 3) of the second sidewall 12, 4th sidewall 14 is connected between the other end (the B1 end such as shown in Fig. 3) of the first side wall 11 and the other end (the B2 end such as shown in Fig. 3) of the second sidewall 12.
As shown in Figure 3, the first side wall 11 and the second sidewall 12 extend along the circumference of rotor endcap 100 respectively substantially, when rotor endcap 100 rotates according to a direction for pivot with its central axis, one end of the first side wall 11 is positioned at the front of its other end all the time, one end being positioned at front all the time of the first side wall 11 is A1 end, one end being positioned at rear all the time of the first side wall 11 is B1 end, analogously, one end of second sidewall 12 is positioned at the front of its other end all the time, one end being positioned at front all the time of second sidewall 12 is A2 end, one end being positioned at rear all the time of second sidewall 12 is B2 end.
Further, with reference to Fig. 3, the center of the first side wall 11 adjacent rotor end cap 100 is arranged, the edge of the second sidewall 12 adjacent rotor end cap 100 is arranged, and the first side wall 11 and the second sidewall 12 are inside and outside corresponding in the radial direction of rotor endcap 100, 3rd sidewall 13 and the 4th sidewall 14 extend along the inward-outward direction of rotor endcap 100 respectively, and the inner of the 3rd sidewall 13 is held with the A1 of the first side wall 11 and is connected, the outer end of the 3rd sidewall 13 is held with the A2 of the second sidewall 12 and is connected, the inner of 4th sidewall 14 is held with the B1 of the first side wall 11 and is connected, the outer end of the 4th sidewall 14 is held with the B2 of the second sidewall 12 and is connected, thus when rotor endcap 100 rotates, 3rd sidewall 13 is positioned at the front of the 4th sidewall 14 all the time.Thus, the first side wall 11, the 3rd sidewall 13, second sidewall 12 and the 4th sidewall 14 head and the tail are connected the oil through 1 being projected as quadrangle that is formed in rotor endcap 100 in turn.
With reference to Fig. 3, the first side wall 11 and the second sidewall 12 are respectively one section of circular arc on two concentric circless.That is, the first side wall 11 and the second sidewall 12 are respectively formed on two concentric circles, and the first side wall 11 and the second sidewall 12 are respectively one section of circular arc on these two concentric circless.Particularly, when constructing the first side wall 11 and the second sidewall 12, first two concentric circles can be made in rotating shaft, preferably the center of circle of two circles all overlaps with the center of circle of rotor endcap 100, and then intercept one section of circular arc respectively on two concentric circles, and ensure that two sections of circular arcs are inside and outside corresponding in the radial direction of rotor endcap 100.Thus, the first side wall 11 and the second sidewall 12 can be obtained.
Further, the 3rd sidewall 13 and the 4th sidewall 14 are also respectively one section of circular arc, and the curvature of the 3rd sidewall 13 is less than the curvature of the 4th sidewall 14.Such as in the example of fig. 3, the center of the 3rd sidewall 13 and the 4th sidewall 14 place circle can be spaced apart from each other distribution in the circumference of rotor endcap 100, and the 3rd sidewall 13 place radius of a circle is greater than the 4th sidewall 14 place radius of a circle, that is, the degree of crook of the 4th sidewall 14 is greater than the degree of crook of the 3rd sidewall 13, and the 3rd sidewall 13 is all consistent with the rotation direction of rotor endcap 100 with the recessed direction of the 4th sidewall 14.
Thus, when rotor endcap 100 is rotated, and when gas bottom-up from oil through 1 through rotor endcap 100 time, because gas has inertia, gas has along rotor endcap 100 circumference, the movement tendency contrary with the direction of rotation of rotor endcap 100, that is, gas has the movement tendency of the 4th sidewall 14 impacting oil through 1, because the degree of crook of the 4th sidewall 14 is larger, thus the 4th sidewall 14 can play the effect of water conservancy diversion well, oil through 1 is flowed out smoothly to be guided by gas, and then the windage that reduction gas causes rotor endcap 100, reduce aerodynamic noise.
With reference to Fig. 3, the arc length of the first side wall 11 is less than the arc length of the second sidewall 12, thus the area of section of the oil through 1 adopting the face of cylinder coaxial with rotor endcap 100 to intercept, along rotor endcap 100 radial direction from inside to outside, there is the trend substantially increased.Thus, when rotor endcap 100 is rotated, and when gas bottom-up from oil through 1 through rotor endcap 100 time, gas through oil through 1 has upwards and along the radially outer movement tendency of rotor endcap 100, because the area of section of oil through 1 outer end is larger, thus comply with the flowing trend of gas well, reduce the windage that gas causes rotor endcap 100, and then effectively can reduce aerodynamic noise.
Further, with reference to Fig. 1, the junction rounding off between first to fourth sidewall 14.That is, the junction of the first side wall 11 and the 3rd sidewall 13 is rounding off, it can be such as round-corner transition, the junction of the 3rd sidewall 13 and the second sidewall 12 is rounding off, can be such as round-corner transition, the junction of the second sidewall 12 and the 4th sidewall 14 be rounding off, such as, can be round-corner transition, the junction of the 4th sidewall 14 and the first side wall 11 is also rounding off, such as, can be round-corner transition.Thus, the junction surrounding four sidewalls of oil through 1 does not have sharp-pointed drift angle, thus gas bottom-uply smoothly can pass oil through 1, less further aerodynamic noise.
From the above mentioned, the shape of oil through 1 can be similar to the blade shape of fan, and when the quantity of oil through 1 is odd number, make the rotated versions of rotor endcap 100 be similar to the rotated versions of fan blade, greatly can reduce windage and the aerodynamic noise of rotor endcap 100.
The external rotor electric machine 1000 of embodiment according to a second aspect of the present invention, comprises the rotor endcap 100 of the external rotor electric machine 1000 according to the above-mentioned first aspect embodiment of the present invention.Wherein, external rotor electric machine 1000 can be the external rotor electric machine of external rotor permanent magnet synchronous machine or other types, is only described for permagnetic synchronous motor below.
Particularly, with reference to Fig. 3 and Fig. 4, external rotor electric machine 1000 also comprises: stator core 200, armature winding 203, machine shaft 300, rotor core 400 and permanent magnet 401, wherein, rotor core 400 is linked together by rotor endcap 100 and machine shaft 300, the center of such as rotor endcap 100 can be formed with installing hole 2, machine shaft 300 is through installing hole 2 and together with the inwall interference fit of installing hole 2, rotor core 400 is substantially formed as the cylindrical shape of both ends open and is connected to the bottom of rotor endcap 100, rotor endcap 100 and rotor core 400 limit the chamber of bottom-open jointly, stator core 200 is located in chamber, on the inner peripheral surface that permanent magnet 401 is arranged on rotor core 400 or be built in rotor core 400, stator core 200 has stator tooth 201 and stator slot 202, armature winding 203 to be limited in stator slot 202 and winding on stator tooth 201.
Further, rotor endcap 100 and rotor core 400 can be one-body molded, or point body formed are connected again.When rotor endcap 100 and rotor core 400 are one-body molded, rotor endcap 100 and rotor core 400 can be made by soft magnetic material (such as 45# steel, 10# steel etc.), and rotor endcap 100 can by drawing process one drawing and forming with rotor core 400.
When rotor endcap 100 and rotor core 400 points is body formed be connected again time, that is, when rotor endcap 100 is linked together by the mode of assembling with rotor core 400, rotor endcap 100 can adopt non-permeable material (such as stainless steel, copper or aluminium etc.) to make, to reduce rotor endcap 100 place leakage field, and rotor core 400 can be formed by silicon steel plate stacking or is processed by soft magnetic material, now, rotor endcap 100 can be fixed together by the mode of welding, being spirally connected or buckle being connected with rotor core 400.
Like this, after rotor core 400 is connected with rotor endcap 100, just by rotor endcap 100, rotor core 400 and machine shaft 300 can be linked together indirectly, and strengthen the rigidity of rotor core 400 simultaneously.
This external rotor electric machine 1000 can be arranged in compressor (scheming not shown), to provide power to the compressing mechanism in compressor, and then completes the compression to refrigerant.Particularly, compressor can comprise: housing, compressing mechanism and external rotor electric machine 1000, compressing mechanism is located at the bottom in housing, external rotor electric machine 1000 is located at the top in housing and is positioned at the top of compressing mechanism, compressing mechanism has cylinder, crankshaft and piston, external rotor electric machine 1000 is connected with bent axle and rotates with driving crank, bent axle drives piston to rotate in the compression chamber of cylinder, thus the refrigerant entered in compression chamber is compressed, refrigerant after compression can be drained in housing by the exhaust outlet in cylinder part, refrigerant moves upward and passes external rotor electric machine 1000, finally can discharge from the blast pipe of case top, but be not limited thereto.
Like this, compressing mechanism compression refrigerant is driven when external rotor electric machine 1000 works, when moving upward when the refrigerant after compressing and pass from the oil through 1 rotor endcap 100, shape due to oil through 1 is blade-shaped, thus windage suffered by rotor endcap 100 is less, and then reduce the aerodynamic noise of motor.Thus, when ensureing that the area of oil through 1 is constant, improve the efficiency of motor, reducing aerodynamic noise during compressor operating, the performance of whole compressor is improved.
The shape of rotor endcap 100 specifically can be arranged according to the geomery of compressor, with practical requirement better.Such as when the axial space in compressor is sufficient, the rotor endcap 100 of preferential employing umbrella-shaped structure, the rotor endcap 100 of umbrella-shaped structure can reduce windage and the aerodynamic noise of external rotor electric machine 1000 further, but the rotor endcap 100 of umbrella-shaped structure to strengthen the physical dimension of rotor endcap 100, so when being compressed the size restrictions of machine, that is, when the axial space in compressor is not enough, the rotor endcap 100 of preferential employing plate-like structure, to reduce the physical dimension of rotor endcap 100, and then reduce the axial dimension of external rotor electric machine 1000 entirety, meet assembling user demand.
According to the external rotor electric machine 1000 of the embodiment of the present invention, by arranging the rotor endcap 100 of the external rotor electric machine 1000 of above-mentioned first aspect embodiment, thus improve the overall performance of external rotor electric machine 1000.
In describing the invention, it will be appreciated that, term " " center ", " thickness ", " on ", D score, " top ", " end ", " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary indirect contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Claims (10)
1. the rotor endcap of an external rotor electric machine, it is characterized in that, described rotor endcap is formed with at least one oil through, wherein each described oil through departs from relative to the radial direction of described rotor endcap from the center of described rotor endcap towards the edge of described rotor endcap.
2. the rotor endcap of external rotor electric machine according to claim 1, it is characterized in that, each described oil through comprises first to fourth sidewall, described the first side wall and described second sidewall are spaced apart from each other in the radial direction of described rotor endcap, described 3rd sidewall is connected between one end of described the first side wall and described second sidewall, and described 4th sidewall is connected between the other end of described the first side wall and described second sidewall.
3. the rotor endcap of external rotor electric machine according to claim 2, is characterized in that, described the first side wall and described second sidewall are respectively one section of circular arc on two concentric circless.
4. the rotor endcap of external rotor electric machine according to claim 3, is characterized in that, the arc length of described the first side wall is less than the arc length of described second sidewall.
5. the rotor endcap of external rotor electric machine according to claim 2, is characterized in that, the curvature of described 3rd sidewall is less than the curvature of described 4th sidewall.
6. the rotor endcap of external rotor electric machine according to claim 2, is characterized in that, the junction rounding off between described first to fourth sidewall.
7. the rotor endcap of external rotor electric machine according to claim 1, is characterized in that, to be multiple and described multiple oil through be uniformly distributed along the circumference of described rotor endcap described oil through.
8. the rotor endcap of external rotor electric machine according to claim 7, is characterized in that, the quantity of described oil through is odd number.
9. the rotor endcap of the external rotor electric machine according to any one of claim 1-8, is characterized in that, described rotor endcap is the frustum cone structure of slab construction or bottom-open.
10. an external rotor electric machine, is characterized in that, comprises the rotor endcap of the external rotor electric machine according to any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410271474.XA CN105186819B (en) | 2014-06-17 | 2014-06-17 | The rotor endcap of external rotor electric machine and there is its external rotor electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410271474.XA CN105186819B (en) | 2014-06-17 | 2014-06-17 | The rotor endcap of external rotor electric machine and there is its external rotor electric machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105186819A true CN105186819A (en) | 2015-12-23 |
| CN105186819B CN105186819B (en) | 2018-01-23 |
Family
ID=54908726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410271474.XA Active CN105186819B (en) | 2014-06-17 | 2014-06-17 | The rotor endcap of external rotor electric machine and there is its external rotor electric machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105186819B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761967A (en) * | 2018-07-27 | 2020-02-07 | 广东美芝制冷设备有限公司 | Compressor with a compressor housing having a plurality of compressor blades |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1590778A (en) * | 2003-08-25 | 2005-03-09 | 乐金电子(天津)电器有限公司 | Axial fan |
| JP2011019306A (en) * | 2009-07-07 | 2011-01-27 | Toshiba Corp | Bearing device for rotary electric machine in rolling stock |
| CN102075037A (en) * | 2011-01-28 | 2011-05-25 | 贺欣机械厂股份有限公司 | Assembly structure of motor |
| CN202014176U (en) * | 2011-03-17 | 2011-10-19 | 广州市鼎丰机械有限公司 | Brushless direct current motor rotor |
| CN202111559U (en) * | 2011-06-09 | 2012-01-11 | 浙江恒逸聚合物有限公司 | Motor convenient for oil injection |
| CN103296819A (en) * | 2013-05-31 | 2013-09-11 | 青岛九方泰达工业科技有限公司 | Oil-filling motor end cap with sector cavities |
| CN203285682U (en) * | 2013-05-06 | 2013-11-13 | 珠海格力电器股份有限公司 | Pump body component fixing device and compressor using same |
| CN203967942U (en) * | 2014-06-17 | 2014-11-26 | 广东美芝制冷设备有限公司 | The rotor endcap of external rotor electric machine and the external rotor electric machine with it |
-
2014
- 2014-06-17 CN CN201410271474.XA patent/CN105186819B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1590778A (en) * | 2003-08-25 | 2005-03-09 | 乐金电子(天津)电器有限公司 | Axial fan |
| JP2011019306A (en) * | 2009-07-07 | 2011-01-27 | Toshiba Corp | Bearing device for rotary electric machine in rolling stock |
| CN102075037A (en) * | 2011-01-28 | 2011-05-25 | 贺欣机械厂股份有限公司 | Assembly structure of motor |
| CN202014176U (en) * | 2011-03-17 | 2011-10-19 | 广州市鼎丰机械有限公司 | Brushless direct current motor rotor |
| CN202111559U (en) * | 2011-06-09 | 2012-01-11 | 浙江恒逸聚合物有限公司 | Motor convenient for oil injection |
| CN203285682U (en) * | 2013-05-06 | 2013-11-13 | 珠海格力电器股份有限公司 | Pump body component fixing device and compressor using same |
| CN103296819A (en) * | 2013-05-31 | 2013-09-11 | 青岛九方泰达工业科技有限公司 | Oil-filling motor end cap with sector cavities |
| CN203967942U (en) * | 2014-06-17 | 2014-11-26 | 广东美芝制冷设备有限公司 | The rotor endcap of external rotor electric machine and the external rotor electric machine with it |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761967A (en) * | 2018-07-27 | 2020-02-07 | 广东美芝制冷设备有限公司 | Compressor with a compressor housing having a plurality of compressor blades |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105186819B (en) | 2018-01-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204419616U (en) | Oil pump assembly and the vehicle with it | |
| CN102758780B (en) | Centrifugal fan | |
| CN105317678A (en) | External rotor rotary compressor | |
| CN202900768U (en) | Centrifugal blower | |
| EP2690291B1 (en) | Centrifugal compressor | |
| CN103261702A (en) | Scroll structure of centrifugal compressor | |
| CN103277324B (en) | There is the centrifugal compressor of asymmetric vaneless diffuser and there is its automobile | |
| CN102777402B (en) | Air-supply arrangement and indoor apparatus of air conditioner | |
| CN204243933U (en) | Compressor and motor rotor component thereof | |
| CN204900286U (en) | Axial fan and air conditioner who has it | |
| CN106712326B (en) | Motor and water pump with it | |
| CN103148021A (en) | Centrifugal compressor with inlet guide blades and turbocharger | |
| CN203967942U (en) | The rotor endcap of external rotor electric machine and the external rotor electric machine with it | |
| CN105186819A (en) | Rotor end cover of outer-rotor-type motor and outer-rotor-type motor with rotor end cover | |
| CN102852561B (en) | The blade of the rotor of turbine, the rotor of turbine and turbine | |
| JP5907205B2 (en) | Blower | |
| JP2012180810A (en) | Air blowing device | |
| CN204419617U (en) | Oil pump assembly and the vehicle with it | |
| CN104296346B (en) | Air-supply assembly for air-conditioner and the air-conditioner with it | |
| CN206283330U (en) | For the motor and wall-breaking machine of wall-breaking machine | |
| CN206221351U (en) | Centrifugal pump and the impeller for centrifugal pump | |
| CN201750290U (en) | Novel cooling-mode DC dust collector motor | |
| CN206221283U (en) | Centrifugal pump | |
| CN204013149U (en) | Cage rotor assembly and there is its motor | |
| CN204732991U (en) | Rotor assembly and motor, the compressor with it |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |