CN210092991U - Rotor core, stepped bidirectional magnetic beam tidying groove rotor, motor and compressor - Google Patents
Rotor core, stepped bidirectional magnetic beam tidying groove rotor, motor and compressor Download PDFInfo
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- CN210092991U CN210092991U CN201921198019.6U CN201921198019U CN210092991U CN 210092991 U CN210092991 U CN 210092991U CN 201921198019 U CN201921198019 U CN 201921198019U CN 210092991 U CN210092991 U CN 210092991U
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- 230000002457 bidirectional effect Effects 0.000 title claims description 9
- 238000010415 tidying Methods 0.000 title claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 191
- 239000010959 steel Substances 0.000 claims abstract description 188
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000004907 flux Effects 0.000 description 16
- 238000000034 method Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 4
- 230000005284 excitation Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model provides a rotor core, cascaded two-way magnetic beam arrangement groove rotor, motor and compressor relates to electric motor rotor technical field, and it is less unstable to solve current PMSM operation, the lower problem of efficiency, and this rotor core's terminal surface processing has the magnetic beam arrangement groove with magnet steel groove intercommunication, can follow the root and retrain and reduce the magnetic leakage to the magnetic beam of magnet steel transmission, can improve the stationarity and the efficiency of operation. The rotor comprises the rotor core, the magnetic steel is installed in the magnetic steel groove, and the rotor, the motor with the rotor and the rotor adopting the motor have the characteristics of higher operation stability and efficiency.
Description
Technical Field
The utility model relates to an electric motor rotor technical field, specific theory is a rotor core of magnetic beam arrangement groove and magnet steel groove intercommunication and have this rotor core's cascaded two-way magnetic beam arrangement groove rotor and motor and compressor that have this rotor.
Background
The existing permanent magnet synchronous motor is provided with a magnetic beam arranging groove structure for improving a magnetic beam path, but the existing magnetic beam arranging groove is in a hole form independent of each other, although the magnetic beam arranging groove of the original rotor structure has a certain effect of improving air gap flux density, the effect is not obvious, the magnetic beam arranging groove can not correct and change the magnetic beam path from the root, so that the magnetic beam still has great deformation at the root, the magnetic beam path is not well constrained, and particularly, when the rotor rotates, the magnetic beam deforms seriously, and the problem of great distortion exists.
The patent document with the publication number of CN206272457U discloses a rotor structure with a magnet beam arrangement groove in the outer region of a magnet groove, wherein the magnet beam arrangement groove in the patent document is arranged on the end face of a rotor core, the magnet beam arrangement groove and the magnet groove are mutually independent, the magnet beam arrangement groove can not arrange the magnet beam from the root of the magnet groove, the distortion of the magnetic beam path is large in the rotation process of the rotor, the operation stability is poor, and a magnetic bridge is formed between the magnet beam arrangement grooves which are mutually independent of the magnet groove, so that the motor efficiency is low. A compressor employing the motor may also have a corresponding problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to design a rotor core, cascaded two-way magnetic beam arrangement groove rotor, motor and compressor, can follow the magnet steel root and arrange in order the restraint to the magnetic beam, reduce the distortion degree of the rotatory in-process magnetic beam of rotor, improved the magnetic density sine degree, increase the operation stationarity to can reduce the magnetic leakage, improve the operating efficiency.
The utility model discloses a following technical scheme realizes:
the utility model provides a rotor core, including the rotor core who has a plurality of magnet steel grooves, the terminal surface processing of rotor core has multiunit first magnetic beam arrangement bank of cells, first magnetic beam arrangement bank of cells with the magnet steel groove one-to-one, all first magnetic beam arrangement bank of cells is located the outside region or the inboard region of magnet steel groove; the first magnetic beam arrangement groove group comprises a plurality of magnetic beam arrangement grooves, all the magnetic beam arrangement grooves are sequentially arranged along the length direction of the corresponding magnetic steel grooves, and all the magnetic beam arrangement grooves are respectively communicated with the corresponding magnetic steel grooves.
When the structure is arranged, each magnetic beam arranging groove processed on the end face of the rotor core is communicated with the corresponding magnetic steel groove, so that the magnetic beam arranging grooves directly start from the root of the magnetic steel groove, a magnetic bridge does not exist at the root of the magnetic steel groove, the magnetic steel emits magnetic beams at the root of the magnetic steel groove and is restrained by relative paths from the root of the magnetic steel groove, the magnetic beams cannot be obviously distorted, the track formed by the magnetic beam paths cannot be greatly changed due to the change of positions in the rotating process of the magnetic steel, and the running stability of the rotor is improved. In addition, the magnetic beam from the magnetic steel has no magnetic bridge at the root part and cannot form a closed loop by itself, and the magnetic beam is used as an effective magnetic beam, so that the operation efficiency can be improved
Further for better realization the utility model discloses, adopt the following structure that sets up very much: the groove width of the magnetic beam arrangement grooves of the first magnetic beam arrangement groove group is gradually increased from the end parts to the middle parts of the corresponding magnetic steel grooves, and the distance between the adjacent magnetic beam arrangement grooves of the first magnetic beam arrangement groove group is gradually increased or is sequentially equal from the end parts to the middle parts of the corresponding magnetic steel grooves.
When the structure is adopted, the end part of the magnetic steel groove is closer to the outer diameter edge of the rotor core relative to the middle part of the magnetic steel groove, when magnetic steel is installed in the magnetic steel groove, the magnetic pole center is closer to the outer diameter of the rotor core relatively, and the magnetic steel center position is further away from the outer diameter of the rotor, so that the wider the groove width of the magnetic beam arrangement groove closer to the middle part of the magnetic steel groove, the wider the groove width, and the influence of the part can be eliminated.
Further for better realization the utility model discloses, adopt the following structure that sets up very much: the magnetic beam arrangement grooves of the first magnetic beam arrangement groove group are arranged in mirror symmetry with respect to the central axis of the corresponding magnetic steel groove in the groove width direction.
Further for better realization the utility model discloses, adopt the following structure that sets up very much: the end face of the rotor core is further provided with a plurality of groups of second magnetic beam arrangement groove groups, the second magnetic beam arrangement groove groups correspond to the magnetic steel grooves one by one, the first magnetic beam arrangement groove groups and the second magnetic beam arrangement groove groups are respectively located in the inner side area and the outer side area of the magnetic steel grooves, each second magnetic beam arrangement groove group comprises a plurality of magnetic beam arrangement grooves which are sequentially distributed along the corresponding length direction of the magnetic steel groove, and all the magnetic beam arrangement grooves are respectively communicated with the corresponding magnetic steel grooves.
When the structure is arranged, the magnetic beam arrangement grooves communicated with the magnetic steel grooves are formed in the two sides of the magnetic steel grooves, the problem of magnetic leakage of the rotor can be greatly reduced, and the motor efficiency is improved. Magnetic beam arrangement grooves are formed in two sides of the magnetic steel groove, so that the magnetic field intensity can be weakened to a certain degree, the air gap flux density peak value can be effectively reduced, the excitation of electromagnetic force is reduced, and the problem of noise vibration caused by the electromagnetic force is solved.
Further for better realization the utility model discloses, adopt the following structure that sets up very much: the groove width of the magnetic beam arrangement grooves of the first magnetic beam arrangement groove group is gradually increased from the end parts to the middle parts of the corresponding magnetic steel grooves, and the distances between the adjacent magnetic beam arrangement grooves of the first magnetic beam arrangement groove group are gradually increased or are sequentially equal from the end parts to the middle parts of the corresponding magnetic steel grooves; the groove width of the magnetic beam arrangement grooves of the second magnetic beam arrangement groove group is gradually increased from the end parts to the middle parts of the corresponding magnetic steel grooves, and the distances between the adjacent magnetic beam arrangement grooves of the second magnetic beam arrangement groove group are gradually increased or are sequentially equal from the end parts to the middle parts of the corresponding magnetic steel grooves.
When the structure is adopted, the end part of the magnetic steel groove is closer to the outer diameter edge of the rotor core relative to the middle part of the magnetic steel groove, when magnetic steel is installed in the magnetic steel groove, the magnetic pole center is closer to the outer diameter of the rotor core relatively, and the magnetic steel center position is further away from the outer diameter of the rotor, so that the wider the groove width of the magnetic beam arrangement groove closer to the middle part of the magnetic steel groove, the wider the groove width, and the influence of the part can be eliminated.
Further for better realization the utility model discloses, adopt the following structure that sets up very much: the magnetic beam arrangement grooves of the first magnetic beam arrangement groove group are arranged in mirror symmetry with respect to the central axis of the corresponding magnetic steel groove in the groove width direction, and the magnetic beam arrangement grooves of the second magnetic beam arrangement groove group are arranged in mirror symmetry with respect to the central axis of the corresponding magnetic steel groove in the groove width direction.
Further for better realization the utility model discloses, adopt the following structure that sets up very much: the included angle formed by the groove width direction of each magnetic beam arrangement groove and the length direction of the corresponding magnetic steel groove is more than or equal to 60 degrees and less than or equal to 120 degrees.
The utility model also provides a cascaded two-way magnetic beam arrangement groove rotor, including magnet steel and foretell rotor core, every install one in the magnet steel inslot the magnet steel.
When the structure is arranged, each magnetic beam arranging groove processed on the end face of the rotor core is communicated with the corresponding magnetic steel groove, so that the magnetic beam arranging grooves directly start from the root of the magnetic steel groove, a magnetic bridge does not exist at the root of the magnetic steel groove, the magnetic steel emits magnetic beams at the root of the magnetic steel groove and is restrained by relative paths from the root of the magnetic steel groove, the magnetic beams cannot be obviously distorted, the track formed by the magnetic beam paths cannot be greatly changed due to the change of positions in the rotating process of the magnetic steel, and the running stability of the rotor is improved. In addition, the magnetic beam from the magnetic steel has no magnetic bridge at the root part and cannot form a closed loop by itself, and the magnetic beam is used as an effective magnetic beam, so that the operation efficiency can be improved
After the magnetic beam arrangement grooves communicated with the magnetic steel grooves are formed in the two sides of the magnetic steel grooves, the problem of magnetic leakage of the rotor can be greatly reduced, and the motor efficiency is improved. Magnetic beam arrangement grooves are formed in two sides of the magnetic steel groove, so that the magnetic field intensity can be weakened to a certain degree, the air gap flux density peak value can be effectively reduced, the sine degree of the flux density is improved, the excitation of electromagnetic force is reduced, and the problem of noise vibration caused by the electromagnetic force is reduced.
Further for better realization the utility model discloses, adopt the following structure that sets up very much: the width of the magnetic steel is less than or equal to the maximum groove width of the magnetic beam arrangement grooves in the corresponding first magnetic beam arrangement groove group.
Further for better realization the utility model discloses, adopt the following structure that sets up very much: the width of the magnetic steel is less than or equal to the smaller groove width of the maximum groove width of the magnetic beam arrangement grooves in the first magnetic beam arrangement groove group compared with the maximum groove width of the magnetic beam arrangement grooves in the second magnetic beam arrangement groove group.
Further for better realization the utility model discloses, adopt the following structure that sets up very much: the number of the magnetic beam arrangement grooves is recorded as n, and the length of the magnetic steel is recorded as f; when the number of the magnetic beam arrangement grooves in the first magnetic beam arrangement groove group or the second magnetic beam arrangement groove is an even number, the sum of the distances between n/2 continuous adjacent magnetic beam arrangement grooves from the end part of the corresponding magnetic steel is less than or equal to 0.5 f; when the number of the magnetic beam arrangement grooves in the first magnetic beam arrangement groove group or the second magnetic beam arrangement groove is odd, the sum of the distances between every 2 continuous/adjacent magnetic beam arrangement grooves is less than or equal to 0.5f from the end part of the corresponding magnetic steel.
The utility model also provides a motor, including stator and foretell rotor.
When the structure is arranged, the motor runs stably and the efficiency is high.
The utility model also provides a compressor has adopted foretell motor.
When the structure is adopted, the compressor runs stably and has high efficiency.
The utility model has the advantages of it is following and beneficial effect:
in the utility model, each magnetic beam arranging groove processed on the end face of the rotor core is communicated with the corresponding magnetic steel groove, therefore, the magnetic beam arranging groove directly starts from the root of the magnetic steel groove, the root of the magnetic steel groove has no magnetic bridge, the magnetic steel transmits magnetic beams at the root of the magnetic steel groove and is restrained by relative paths from the root of the magnetic steel groove, the magnetic beams can not be obviously distorted, the track formed by the magnetic beam paths can not be greatly changed due to the change of the position in the rotating process of the magnetic steel, and the running stability of the rotor is improved; and the magnetic beam coming out of the magnetic steel has no magnetic bridge at the root part, and cannot form a closed loop by itself, and the magnetic beam is used as an effective magnetic beam, so that the operation efficiency can be improved.
The utility model discloses in, the rotor core that this rotor adopted communicates each other with the magnet steel groove that corresponds because of every magnetic beam arrangement groove of terminal surface processing, therefore, the direct root from the magnet steel groove of magnetic beam arrangement groove is started, can make magnet steel groove root do not have the magnetic bridge, the magnet steel just receives relative path constraint from magnet steel groove root at magnet steel groove root transmission magnetic beam, obvious distortion can not take place for the magnetic beam, can not change the pursuit that the magnetic beam route formed by a wide margin because of the change of position at the rotatory in-process of magnet steel, increase rotor operation smoothness, and, the magnetic beam that the magnet steel came out does not have the magnetic bridge at the root, unable self forms closed loop, its magnetic beam all regards as effective magnetic beam, can improve the operating efficiency. And after the magnetic beam arrangement grooves communicated with the magnetic steel grooves are formed in the two sides of the magnetic steel grooves, the problem of magnetic leakage of the rotor can be greatly reduced, and the motor efficiency is improved. Magnetic beam arrangement grooves are formed in two sides of the magnetic steel groove, so that the magnetic field intensity can be weakened to a certain degree, the air gap flux density peak value can be effectively reduced, the sine degree of the flux density is improved, the excitation of electromagnetic force is reduced, and the problem of noise vibration caused by the electromagnetic force is reduced. The motor and the compressor adopting the rotor have the characteristics of stable operation and higher efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a prior art rotor construction;
FIG. 2 is a schematic structural view of a stepped bidirectional magnetic flux arranging groove rotor in embodiment 3;
FIG. 3 is a schematic view of a motor structure using a conventional rotor;
FIG. 4 is a schematic view of the structure of the motor in embodiment 4;
FIG. 5 is a schematic view of the configuration of the magnetic beam shaping slot portion;
labeled as:
1-a rotor core; 2-magnetic steel grooves; 3-magnetic beam arrangement groove; 4-magnetic steel; 5-a stator; 6-magnetic beam.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example 1:
a stepped two-way magnetic beam arranging slot rotor can arrange and restrain magnetic beams from the root of magnetic steel, reduce the distortion degree of the magnetic beams in the rotating process of the rotor, improve the sine degree of magnetic density, increase the running stability, reduce magnetic leakage and improve the running efficiency, and is particularly set to be in the following structure as shown in figures 1, 2, 3, 4 and 5:
including rotor core 1, the terminal surface department processing of rotor core 1 has a plurality of magnetic steel grooves 2, and the quantity of this embodiment china magnetic steel groove 2 is six, six magnetic steel grooves 2 along rotor core 1's axial equipartition. The end face of the rotor iron core 1 is also provided with a plurality of groups of first magnetic beam arrangement groove groups, each first magnetic beam arrangement groove group mainly comprises n magnetic beam arrangement grooves 3, the number of the first magnetic beam arrangement groove groups is equal to that of the magnetic steel grooves 2, and the first magnetic beam arrangement groove groups and the magnetic steel grooves 2 are in one-to-one correspondence. All the first magnetic beam arrangement groove groups are located on the same side of the corresponding magnetic steel grooves 2, namely all the first magnetic beam arrangement groove groups are located in the outer side area or the inner side area of the corresponding magnetic steel grooves 2.
The number n of the magnetic beam arrangement grooves 3 in the first magnetic beam arrangement groove group is a natural number which is more than or equal to 2. All the magnetic beam arrangement grooves 3 are sequentially arranged along the length direction of the corresponding magnetic steel grooves 2, gaps are formed between the adjacent magnetic beam arrangement grooves 3, and all the magnetic beam arrangement grooves 3 are respectively communicated with the corresponding magnetic steel grooves 2. In this embodiment, the magnetic flux collecting grooves 3 of the first magnetic flux collecting groove group are arranged in mirror symmetry with respect to the central axis of the corresponding magnetic steel groove 2 in the groove width direction.
When every magnetic beam arrangement groove 3 of rotor core terminal surface processing communicates each other with the magnet steel groove 2 that corresponds, magnetic beam arrangement groove 3 directly starts from the root of magnet steel groove 2, can make magnet steel groove 2 roots do not have the magnetic bridge, magnet steel 4 launches the magnetic beam at magnet steel groove 2 roots and just receives relative path restraint from magnet steel groove 2 roots, obvious distortion can not take place for the magnetic beam, can not change the whereabouts that the magnetic beam path formed by a wide margin because of the change of position at the rotatory in-process of magnet steel, increase rotor operation smoothness. And the magnetic beam from the magnetic steel 4 has no magnetic bridge at the root, and cannot form a closed loop by itself, and the magnetic beam is used as an effective magnetic beam, so that the operation efficiency can be improved.
The included angle formed by the groove width direction of each magnetic beam arrangement groove 3 and the length direction of the corresponding magnetic steel groove 2 can be set according to actual requirements, and generally speaking, the included angle is more than or equal to 60 degrees and less than or equal to 120 degrees.
For the effect, when the first magnetic beam arrangement groove group is located at the inner side of the magnetic steel groove 2, the operation smoothness and the working efficiency characteristics obtained by the rotor core are inferior to the effect when the first magnetic beam arrangement groove group is located at the outer side of the magnetic steel groove 2.
Because the end of the magnetic steel slot 2 is closer to the outer diameter edge of the rotor core relative to the middle of the magnetic steel slot, when the magnetic steel is installed in the magnetic steel slot, the magnetic pole center is closer to the outer diameter of the rotor core, and the magnetic steel center is farther from the outer diameter of the rotor, therefore, in order to eliminate partial influence, as an optimal arrangement scheme of the magnetic beam arrangement slots, the slot width of the magnetic beam arrangement slots 3 of the first magnetic beam arrangement slot group is gradually increased from the end to the middle of the corresponding magnetic steel slot 2, and the distance between the adjacent magnetic beam arrangement slots 3 of the first magnetic beam arrangement slot group is gradually increased or equal from the end to the middle of the corresponding magnetic steel slot 2, and the wider the slot width of the magnetic beam arrangement slot 3 closer to the middle of the magnetic steel slot 3 can eliminate the partial influence.
Example 2:
this embodiment is further optimized on the basis of above-mentioned embodiment, and further for better realization the utility model discloses, adopt the following structure that sets up very much:
the end face of the rotor iron core 1 is also provided with six groups of second magnetic beam arrangement groove groups, each second magnetic beam arrangement groove group mainly comprises n magnetic beam arrangement grooves 3, and the second magnetic beam arrangement groove groups and the magnetic steel grooves 2 are in one-to-one correspondence. Wherein, the first magnetic beam arrangement groove group and the second magnetic beam arrangement groove group are respectively positioned in the inner side area and the outer side area of the magnetic steel groove 2,
the number n of the magnetic beam arrangement grooves 3 in the first magnetic beam arrangement groove group is a natural number which is more than or equal to 2. N magnetic beam arrangement grooves in the second magnetic beam arrangement groove group are sequentially arranged along the length direction of the corresponding magnetic steel grooves 2, gaps are formed between every two adjacent magnetic beam arrangement grooves 3, and all the magnetic beam arrangement grooves 3 are respectively communicated with the corresponding magnetic steel grooves 2.
The included angle formed by the groove width direction of each magnetic beam arrangement groove 3 and the length direction of the corresponding magnetic steel groove 2 can be set according to actual requirements, and generally speaking, the included angle is more than or equal to 60 degrees and less than or equal to 120 degrees.
After the magnetic beam arrangement grooves 3 communicated with the magnetic steel grooves 2 are formed in the two sides of the magnetic steel grooves, the problem of magnetic leakage of the rotor can be greatly reduced, and the motor efficiency is improved. The magnetic beam arrangement grooves 3 are formed in the two sides of the magnetic steel groove 2, so that the magnetic field intensity can be weakened to a certain degree, the magnetic density peak value of an air gap can be effectively reduced, the excitation of electromagnetic force is reduced, and the problem of noise vibration caused by the electromagnetic force is solved.
Because the end part of the magnetic steel groove 2 is closer to the outer diameter edge of the rotor core relative to the middle part thereof, when the magnetic steel is arranged in the magnetic steel groove, the center of the magnetic pole is closer to the outer diameter of the rotor core relatively, and the center of the magnetic steel is farther from the outer diameter of the rotor, therefore, in order to eliminate partial influence, as the optimal arrangement scheme of the magnetic beam arrangement grooves, the groove width of the magnetic beam arrangement grooves 3 of the first magnetic beam arrangement groove group is gradually increased from the end part to the middle part of the corresponding magnetic steel groove 2, and the distance between the adjacent magnetic beam arrangement grooves 3 of the first magnetic beam arrangement groove group is gradually increased or sequentially equal from the end part to the middle part of the corresponding magnetic steel groove 2; the groove width of the magnetic beam arrangement grooves 3 of the second magnetic beam arrangement groove group is gradually increased from the end parts to the middle parts of the corresponding magnetic steel grooves 2, and the distance between the adjacent magnetic beam arrangement grooves 3 of the first magnetic beam arrangement groove group is gradually increased from the end parts to the middle parts of the corresponding magnetic steel grooves 2 or is equal in sequence, so that the influence of the part can be eliminated as the groove width of the magnetic beam arrangement grooves 3 close to the middle parts of the magnetic steel grooves 3 is wider.
In this embodiment, the magnetic flux collecting grooves 3 of the first magnetic flux collecting groove group are arranged in mirror symmetry with respect to the central axis in the groove width direction of the corresponding magnetic steel groove 2, and similarly, the magnetic flux collecting grooves 3 of the second magnetic flux collecting groove group are arranged in mirror symmetry with respect to the central axis in the groove width direction of the corresponding magnetic steel groove 2.
Example 3:
the embodiment further provides a cascaded two-way magnetic beam arrangement groove rotor on the basis of above-mentioned embodiment, has and to arrange the restraint to the magnetic beam from the magnet steel root, reduces the distortion degree of rotor rotation in-process magnetic beam, has improved the magnetic density sine degree, increases the operation stationarity to can reduce the magnetic leakage, improve the operating efficiency, adopt the following structure that sets up very much:
the rotor comprises magnetic steel 4 and a rotor core in embodiment 2, wherein one magnetic steel 4 is arranged in each magnetic steel groove 2, and the magnetic steel grooves 2 and the magnetic steel 4 have a matching relation. In this embodiment, the width of the magnetic steel 4 is denoted as e, the length of the magnetic steel 4 is denoted as f, and the distance between adjacent magnetic beam sorting grooves 3 in the first magnetic beam sorting groove group is denoted as anAnd the groove width of the magnetic beam arrangement groove in the first magnetic beam arrangement groove group is recorded as bnAnd the distance between adjacent magnetic beam arrangement grooves 3 in the second magnetic beam arrangement groove group is marked as cnAnd the groove width of the magnetic beam arrangement groove in the second magnetic beam arrangement groove group is recorded as dn。
Every magnetic beam arrangement groove 3 of rotor core terminal surface processing communicates with each other with the magnet steel groove 2 that corresponds, consequently, magnetic beam arrangement groove 3 directly starts from the root of magnet steel groove 2, can make magnet steel groove 2 roots do not have the magnetic bridge, magnet steel 4 just receives relative route restraint at magnet steel groove 2 roots transmission magnetic beam from magnet steel groove 2 roots, obvious distortion can not take place for the magnetic beam, can not change the whereabouts that the magnetic beam route formed by a wide margin because of the change of position at the rotatory in-process of magnet steel, increase rotor operation smoothness. And the magnetic beam from the magnetic steel 4 has no magnetic bridge at the root, and cannot form a closed loop by itself, and the magnetic beam is used as an effective magnetic beam, so that the operation efficiency can be improved.
This rotor is at magnet steel groove 2's inside and outside both sides design magnetic beam arrangement groove 3, the root that makes the magnetic beam send from the magnet steel begins, just receive its journey of magnetic beam arrangement groove 3 restraint, make it not take place obvious change along with the rotor rotation, guarantee uniformity and stability in its operation process, and because the existence in magnetic beam arrangement groove 3, make the direct magnetic leakage of adjacent magnet steel 4 reduce, the tip magnetic leakage of magnet steel 4 itself also reduces, because the magnetic beam that magnet steel 4 came out does not have the magnetic bridge at the root, unable self forms closed loop, its magnetic beam all is as effective magnetic beam, wherein, because magnetic pole central dimension is nearer relatively from the external diameter, magnet steel central position is far away from rotor external diameter department, its size does following restraint:
(1) when the rotor core only has the first magnetic beam arrangement groove group, the width e of the magnetic steel 4 is less than or equal to the maximum groove width b of the magnetic beam arrangement groove 3 in the corresponding first magnetic beam arrangement groove groupn；
When the rotor core is provided with a first magnetic beam arrangement groove group and a second magnetic beam arrangement groove, the width e of the magnetic steel 4 is less than or equal to the maximum groove width b of the magnetic beam arrangement grooves 3 in the first magnetic beam arrangement groove groupnThe maximum groove width d of the magnetic beam arrangement groove 3 in the same second magnetic beam arrangement groove groupnIn contrast, the present embodiment takes the latter as an example for illustration.
(2) When the number n of the magnetic beam sorting grooves 3 in the first magnetic beam sorting groove group or the second magnetic beam sorting groove is an even number, the sum of the distances between n/2 continuous adjacent magnetic beam sorting grooves 3 is less than or equal to 0.5f from the end part of the corresponding magnetic steel 4; when the number n of the magnetic beam arrangement grooves 3 in the first magnetic beam arrangement groove group or the second magnetic beam arrangement groove is an odd number, the sum of the distances between n-1/2 continuous adjacent magnetic beam arrangement grooves 3 from the end of the corresponding magnetic steel 4 is less than or equal to 0.5 f.
The paths of the magnetic flux of the prior art rotor and the rotor of the present application are shown in fig. 3 and 4, and the stepped bidirectional magnetic flux tidying slot rotor of the present application can effectively restrain the path of the magnetic flux 6.
In this embodiment, fig. 4 and 5 are used as examples for explanation. The number n of the magnetic beam arrangement grooves in the first magnetic beam arrangement groove group and the second magnetic beam arrangement groove group is 10. The first magnetic beam arrangement groove group and the second magnetic beam arrangement groove group are symmetrical about the central axis of the magnetic steel groove 2 in the width direction, so that the first magnetic beam arrangement groove group and the second magnetic beam arrangement groove group have the same size relationship from left to right and from right to left, and the following size relationship exists from left to right:
a1≤a2≤a3≤a4≤a5，b5＜b4＜b3＜b2＜b1，c1≤c2≤c3≤c4≤c5，d5＜d4＜d3＜d2＜d1，2e≤bmax，sum(a1+a2+…+a5)≤0.5f，2e≤dmax，sum(c1+c2+…+c5)≤0.5f。
table 1 shows the index comparison between the motor using the stepped bidirectional magnetic beam arrangement slot rotor and the motor using the existing rotor, and as shown in table 1, the motor using the bidirectional magnetic beam arrangement slot rotor is improved in various aspects.
TABLE 1 New rotor magnetic bundle arrangement slot motor index comparison
Example 4:
this embodiment further provides a motor on the basis of above-mentioned embodiment, and this motor operates steadily, and efficiency is higher, adopts the following structure that sets up especially:
the motor comprises a stator 5 and a rotor in embodiment 3, wherein the rotor is arranged inside the stator 5.
Example 5:
the embodiment further provides a compressor on the basis of the above embodiment, and the motor of the compressor operates steadily, and the efficiency is higher, especially adopts the following arrangement structure:
the compressor used the motor of example 4.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention.
Claims (13)
1. A rotor core comprising a rotor core (1) having a plurality of magnetic steel slots (2), characterized in that: a plurality of groups of first magnetic beam arrangement groove groups are processed on the end face of the rotor iron core (1), the first magnetic beam arrangement groove groups correspond to the magnetic steel grooves (2) one by one, and all the first magnetic beam arrangement groove groups are located in the outer side area or the inner side area of the magnetic steel grooves (2); the first magnetic beam arrangement groove group comprises a plurality of magnetic beam arrangement grooves (3), all the magnetic beam arrangement grooves (3) are sequentially arranged along the length direction of the corresponding magnetic steel grooves (2), and all the magnetic beam arrangement grooves (3) are respectively communicated with the corresponding magnetic steel grooves (2).
2. A rotor core according to claim 1, wherein: the groove width of the magnetic beam arrangement groove (3) of the first magnetic beam arrangement groove group is gradually increased from the end part to the middle part of the corresponding magnetic steel groove (2); the distance between the adjacent magnetic beam arrangement grooves (3) of the first magnetic beam arrangement groove group is gradually increased or equal from the end part to the middle part of the corresponding magnetic steel groove (2).
3. A rotor core according to claim 2, wherein: the magnetic beam arrangement grooves (3) of the first magnetic beam arrangement groove group are arranged in mirror symmetry with respect to the central axis of the magnetic steel grooves (2) in the groove width direction.
4. A rotor core according to claim 1, wherein: the end face of the rotor iron core (1) is further provided with a plurality of groups of second magnetic beam arrangement groove groups, the second magnetic beam arrangement groove groups correspond to the magnetic steel grooves (2) in a one-to-one mode, the first magnetic beam arrangement groove groups and the second magnetic beam arrangement groove groups are respectively located in the inner side area and the outer side area of the magnetic steel grooves (2), each second magnetic beam arrangement groove group comprises a plurality of magnetic beam arrangement grooves (3) which are sequentially arranged along the length direction of the corresponding magnetic steel groove (2), and all the magnetic beam arrangement grooves (3) are respectively communicated with the corresponding magnetic steel grooves (2).
5. A rotor core according to claim 4, characterized in that: the groove width of the magnetic beam arrangement grooves (3) of the first magnetic beam arrangement groove group is gradually increased from the end parts to the middle parts of the corresponding magnetic steel grooves (2), and the distances between the adjacent magnetic beam arrangement grooves (3) of the first magnetic beam arrangement groove group are gradually increased or are sequentially equal from the end parts to the middle parts of the corresponding magnetic steel grooves (2); the groove width of the magnetic beam arrangement grooves (3) of the second magnetic beam arrangement groove group is gradually increased from the end parts to the middle parts of the corresponding magnetic steel grooves (2), and the distances between the adjacent magnetic beam arrangement grooves (3) of the second magnetic beam arrangement groove group are gradually increased from the end parts to the middle parts of the corresponding magnetic steel grooves (2) or are sequentially equal.
6. A rotor core according to claim 5, characterized in that: the magnetic beam arrangement grooves (3) of the first magnetic beam arrangement groove group are arranged in mirror symmetry with respect to the central axis of the corresponding magnetic steel groove (2) in the groove width direction, and the magnetic beam arrangement grooves (3) of the second magnetic beam arrangement groove group are arranged in mirror symmetry with respect to the central axis of the corresponding magnetic steel groove (2) in the groove width direction.
7. A rotor core according to any one of claims 1-6, characterized in that: the included angle formed by the groove width direction of each magnetic beam tidying groove (3) and the length direction of the corresponding magnetic steel groove (2) is more than or equal to 60 degrees and less than or equal to 120 degrees.
8. The utility model provides a cascaded two-way magnetic beam arrangement groove rotor which characterized in that: comprising magnetic steels (4) and a rotor core according to any of claims 5-6, one of said magnetic steels (4) being arranged in each of said magnetic steel slots (2).
9. The stepped bidirectional magnetic beam unscrambling groove rotor according to claim 8, characterized in that: the width of the magnetic steel (4) is less than or equal to the maximum groove width of the magnetic beam arrangement groove (3) in the corresponding first magnetic beam arrangement groove group.
10. The stepped bidirectional magnetic beam unscrambling groove rotor according to claim 9, characterized in that: the width of the magnetic steel (4) is less than or equal to the smaller groove width of the maximum groove width of the magnetic beam arrangement groove (3) in the first magnetic beam arrangement groove group compared with the maximum groove width of the magnetic beam arrangement groove (3) in the second magnetic beam arrangement groove group.
11. The stepped bidirectional magnetic beam tidying groove rotor as recited in claim 9 or 10, characterized in that: the number of the magnetic beam arrangement grooves (3) is recorded as n, and the length of the magnetic steel (4) is recorded as f; when the number of the magnetic beam sorting grooves (3) in the first magnetic beam sorting groove group or the second magnetic beam sorting groove group is an even number, the sum of the distances between n/2 continuous adjacent magnetic beam sorting grooves (3) is less than or equal to 0.5f from the end part of the corresponding magnetic steel (4); when the number of the magnetic beam sorting grooves (3) in the first magnetic beam sorting groove group or the second magnetic beam sorting groove group is odd, the sum of the distances between the continuous (n-1)/2 adjacent magnetic beam sorting grooves (3) is less than or equal to 0.5f from the end part of the corresponding magnetic steel (4).
12. An electric machine characterized by: comprising a stator (5) and a rotor according to any of claims 8-11.
13. A compressor, characterized by: the motor according to claim 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921198019.6U CN210092991U (en) | 2019-07-26 | 2019-07-26 | Rotor core, stepped bidirectional magnetic beam tidying groove rotor, motor and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921198019.6U CN210092991U (en) | 2019-07-26 | 2019-07-26 | Rotor core, stepped bidirectional magnetic beam tidying groove rotor, motor and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210092991U true CN210092991U (en) | 2020-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921198019.6U Active CN210092991U (en) | 2019-07-26 | 2019-07-26 | Rotor core, stepped bidirectional magnetic beam tidying groove rotor, motor and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210092991U (en) |
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2019
- 2019-07-26 CN CN201921198019.6U patent/CN210092991U/en active Active
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