CN218733480U - Rotor, stator, motor, compressor and refrigeration plant - Google Patents
Rotor, stator, motor, compressor and refrigeration plant Download PDFInfo
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- CN218733480U CN218733480U CN202222344824.3U CN202222344824U CN218733480U CN 218733480 U CN218733480 U CN 218733480U CN 202222344824 U CN202222344824 U CN 202222344824U CN 218733480 U CN218733480 U CN 218733480U
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- permanent magnet
- magnetism isolating
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 10
- 230000005389 magnetism Effects 0.000 claims abstract description 65
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000009434 installation Methods 0.000 claims abstract description 11
- 230000000670 limiting effect Effects 0.000 claims abstract description 9
- 230000005291 magnetic effect Effects 0.000 claims description 40
- 238000002955 isolation Methods 0.000 claims description 18
- 238000003475 lamination Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 description 16
- 230000004907 flux Effects 0.000 description 9
- 239000003507 refrigerant Substances 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005347 demagnetization Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000005405 multipole Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model discloses a rotor, stator, motor, compressor and refrigeration plant, the rotor includes: the iron core is provided with a plurality of mounting grooves; the permanent magnet is arranged in the mounting groove; a magnetism isolating groove is formed in one side, facing the axis of the iron core, corresponding to each permanent magnet, and the magnetism isolating groove is communicated with the installation groove; and the iron core is provided with a positioning piece for limiting the permanent magnet to move towards the magnetism isolating groove. The utility model discloses an adopt the setting element to fix the permanent magnet on the iron core, avoid the permanent magnet to remove to the magnetism isolating groove, and then promote the performance of motor.
Description
Technical Field
The utility model relates to a compressor field, in particular to rotor, stator, motor, compressor and refrigeration plant.
Background
When the variable frequency motor is excited by a ferromagnetic material with lower magnetic property, a rotor topological structure with better magnetic convergence property is needed, a tangential magnetic circuit structure is one of ways for realizing strong magnetic convergence, and magnetic steel is excited by a tangential structure. The motor rotor of the tangential rotor motor is provided with an outer surface facing the stator, and the outer surface is provided with a trimming structure correspondingly arranged with the magnetic steel in the motor rotor. The tangential motor has the effect of gathering magnetism, and compared with a radial motor, the tangential motor can generate higher air gap flux density, so that the tangential motor has the characteristics of small volume, light weight, large torque, large power density and the like.
In the existing tangential motor, the magnetic steel is fixed on the iron core, and because of the movement of the rotor, a gap is formed between the magnetic steel and the mounting groove of the iron core, so that the magnetic steel radially moves along with the rotation of the rotor, and the normal operation of the motor is influenced.
SUMMERY OF THE UTILITY MODEL
The main object of the utility model is to provide a rotor aims at solving the problem of the permanent magnet of current rotor to radial movement and axial circulation.
To achieve the above object, the present invention provides a rotor, including:
the iron core is provided with a plurality of mounting grooves; and
the permanent magnet is arranged in each mounting groove;
a magnetism isolating groove is formed in one side, facing the axis of the iron core, corresponding to each permanent magnet, and the magnetism isolating groove is communicated with the installation groove; and the iron core is provided with a positioning piece for limiting the permanent magnet to move towards the magnetism isolating groove.
In some examples, the number of the positioning parts is multiple, and each magnetism isolating groove is provided with at least one positioning part.
In some examples, the permanent magnet has a positioning surface facing the magnetism isolating groove; the positioning piece is abutted against the positioning surface.
In some examples, in a single mounting groove, the mounting groove and the magnetism isolating groove respectively have side ring wall surfaces arranged at intervals in the circumferential direction of the rotor, and the side ring wall surface of the mounting groove is connected with the side ring wall surface of the magnetism isolating groove on the corresponding side; at least one side ring wall surface of the magnetism isolating groove is convexly provided with a boss, and the boss forms the positioning piece.
In some examples, the permanent magnet has a thickness d in a circumferential direction of the core 1 (ii) a The height of the boss is r; wherein r is not less than d 1 And r is not more than d 1 /4。
In some examples, a maximum width of the boss in a direction perpendicular to an axial direction of the core is d; the width of the magnetism isolating groove is d 2 (ii) a Wherein d is not less than d 2 And d is not more than d 2 /2。
In some examples, the permanent magnet has a thickness d in a circumferential direction of the core 1 (ii) a In the axial direction perpendicular to the iron core, the width of the permanent magnet is L; wherein, d 1 Not less than L/8, and d 1 Not more than L/2.
In some examples, the permanent magnets form permanent magnet pairs in pairs, and the magnetic isolation grooves corresponding to the permanent magnets in the same permanent magnet pair are communicated with each other; the magnetic isolation grooves of the adjacent permanent magnet pairs are mutually isolated through connecting ribs.
The utility model discloses on the basis of the rotor in above-mentioned arbitrary example, still provide one kind with the stator of rotor looks adaptation as above-mentioned arbitrary example, the stator encloses to be located the outside of rotor.
In some examples, the stator is composed of stator laminations, the inner diameter of the stator laminations is Di, and the outer diameter of the stator laminations is D 1 Wherein 0.65 is not less than Di/D 1 ≥0.5。
In some examples, a ratio between the number of stator slots of the stator and the number of permanent magnets is 3/2;
alternatively, the ratio between the number of stator slots of the stator and the number of permanent magnets is 6/5.
The utility model discloses on the basis of the example of above-mentioned rotor or stator, still provide a motor, include: a rotor as in any of the examples above; and
the stator according to any of the above examples, wherein the stator is arranged around the outside of the rotor and is arranged coaxially with the rotor.
The utility model discloses on the basis of the example of above-mentioned rotor or stator, still provide a compressor, include as above-mentioned the motor.
The utility model discloses on the basis of above-mentioned compressor, still provide a refrigeration plant, include the compressor as in the above-mentioned example.
The utility model discloses technical scheme is through adopting the setting element to fix the permanent magnet on the iron core, avoids the permanent magnet to remove to the magnetism isolating groove, has increased the magnetism isolating groove area simultaneously, has improved the circulation effect, and then has promoted the performance of motor.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural view of an embodiment of a rotor according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at 1 a;
fig. 3 is a schematic structural view of another embodiment of the rotor of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 at 3 a;
fig. 5 is a schematic structural view of a rotor according to another embodiment of the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 5 at 5 a;
fig. 7 is a schematic structural diagram of an embodiment of a permanent magnet according to the present invention;
fig. 8 is a schematic structural diagram of an embodiment of the stator of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | Stator with a |
11 | |
| 20 | |
21 | |
| 22 | |
23 | Locating |
| 24 | |
25 | |
| 26 | Connecting rib |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in 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.
It should be noted that, if directional indications (such as up, down, left, right, front, back, 8230; \8230;) are provided in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1, 3 and 5, an example of the present invention provides a rotor for an electric machine, which is capable of cooperating with a stator 10. The rotor includes a core 20 and a permanent magnet 24 provided on the core 20. The core 20 has a shaft hole 25 for mounting a rotating shaft. The number of the permanent magnets 24 is multiple, the iron core 20 is provided with mounting grooves 21 for mounting the permanent magnets 24, and the mounting grooves 21 are arranged at intervals along the circumferential direction of the shaft hole 25, so that the permanent magnets 24 can be distributed at intervals to form an integral structure with the iron core 20.
When the motor operates, the iron core 20 is driven by the rotating shaft to synchronously rotate, the permanent magnet 24 mounted on the iron core 20 is acted by centrifugal force, and tends to move towards the peripheral direction of the iron core 20, and when the rotor stops rotating, the permanent magnet 24 tends to move towards the axis direction of the iron core 20. In some examples, a positioning member 23 is disposed on the iron core 20, and the positioning member 23 limits the permanent magnet 24 at a preset position on the iron core 20, so that the permanent magnet 24 is limited on the iron core 20 to prevent the relative movement of the permanent magnet 24. In this example, the positioning member 23 is disposed on the iron core 20 to limit the position of the permanent magnet 24, so as to prevent the permanent magnet 24 from moving along a direction perpendicular to the axis of the rotor (i.e., a radial direction in fig. 1), and thus the stability of the permanent magnet 24 can be improved, and the stability of the motor operation can be improved. The positioning member 23 is used for limiting and fixing the permanent magnet 24 so that the permanent magnet 24 maintains a fixed state at a preset position. In some examples, permanent magnets 24 made of ferrite or other materials may be employed.
In order to improve the magnetic gathering effect, in some examples, the iron core 20 is provided with a magnetic isolation groove 22, the magnetic isolation groove 22 is provided on one side of the permanent magnet 24 facing the axis of the iron core 20, that is, the magnetic isolation groove 22 is provided between the permanent magnet 24 and the shaft hole 25, the magnetic isolation groove 22 and the permanent magnet 24 are arranged in a one-to-one manner, and each magnetic isolation groove 22 corresponds to one permanent magnet 24, so as to achieve the magnetic isolation effect, reduce magnetic leakage, and further improve the magnetic gathering effect. By arranging the magnetism isolating grooves 22, a channel for the flowing of the refrigerant can be formed through the magnetism isolating grooves 22, and the normal circulation of the refrigerant is ensured. In some examples, adjacent magnetic isolation slots 22 are isolated from each other by connecting ribs 26 to reduce magnetic leakage, thereby helping to improve the magnetic gathering effect of the motor.
In some examples, the magnetism isolating grooves 22 communicate with the mounting grooves 21 in which the corresponding permanent magnets 24 are located. The refrigerant in the motor can flow along the axial direction of the magnetism isolating groove 22, and the performance of the system can be further improved. When the motor stops operating, the permanent magnets 24 have a tendency to move toward the magnetism isolating grooves 22. Furthermore, in order to limit the movement of the permanent magnet 24, a positioning member 23 is provided on the iron core 20, and the positioning member 23 is used for limiting the movement of the permanent magnet 24 toward the magnetism isolating groove 22, thereby maintaining the stability of the permanent magnet 24. By limiting the movement of the permanent magnet 24, the effective circulation space in the magnetism isolating groove 22 can be effectively ensured, and the flow of the refrigerant is further improved. Through spacing permanent magnet 24, make it keep in preset position, can reduce the magnetic leakage, guarantee to separate the magnetism effect. Since each mounting groove 21 is provided with a permanent magnet 24, in some examples, the number of the positioning members 23 is multiple, and each magnetism isolating groove 22 is provided with at least one positioning member 23 to limit the relative position of each permanent magnet 24. In some examples, an end surface of the magnetism isolating groove 22 near the axial direction of the core 20 is a smooth arc surface or a flat surface to increase a flow area of the refrigerant and reduce flow resistance.
In some examples, when the permanent magnet 24 is installed, the iron core 20 is provided with a hole to form an installation groove 21, the installation groove 21 is provided with an inner ring wall surface close to the axis of the iron core 20, and after the permanent magnet 24 is installed in the installation groove 21, a magnetic isolation groove 22 is formed in a gap between the permanent magnet 24 and the inner ring wall surface of the installation groove 21. In the single mounting groove 21, the mounting groove 21 and the magnetism isolating groove 22 respectively have side ring wall surfaces arranged at intervals in the circumferential direction of the core 20, and the side ring wall surfaces of the mounting groove 21 and the side ring wall surfaces of the magnetism isolating grooves 22 on the corresponding sides are connected with each other to form a continuous plane for convenient processing. In some examples, the inner wall surface of the mounting groove 21 is a smooth arc surface or a flat surface to increase the flow area of the refrigerant and reduce the flow resistance.
When the positioning member 23 is installed, the positioning member 23 may be fixedly installed outside the installation groove 21, the positioning member 23 may be fixedly installed in the installation groove 21, and the positioning member 23 may be fixedly installed in the magnetism isolating groove 22.
Further, in some examples, the positioning element 23 is a fastening mechanism fixedly connected to the iron core 20, the positioning element 23 is separately provided from the iron core 20, so as to match the position of the positioning element 23 with the position of the permanent magnet 24 as required, and the positioning element 23 fixes the permanent magnet 24 at a preset position on the iron core 20, so as to prevent the permanent magnet 24 from moving radially. In some examples, the spacer 23 is provided integrally with the iron core 20 to facilitate molding of the spacer 23.
In some examples, the mounting groove 21 is a rectangular groove in a cross section perpendicular to the axial direction of the core 20. The permanent magnet 24 is of a cuboid structure so as to facilitate machining and forming and improve the magnetism gathering effect. The positioning piece 23 is arranged to limit the relative movement of the permanent magnet 24 in the mounting groove 21, so that the running stability of the motor can be improved.
For ease of positioning, in some examples, permanent magnet 24 has a positioning face that faces flux barrier slot 22; the positioning member 23 abuts against the positioning surface to prevent the permanent magnet 24 from moving in the axial direction of the iron core 20. Further, in some examples, the positioning member 23 is provided outside the magnetism isolating groove 22, and the positioning member 23 has a convex portion protruding into the inside of the magnetism isolating groove 22, and the convex portion of the positioning member 23 abuts against the positioning surface of the permanent magnet 24. In some examples, unlike the previous example, the positioning member 23 is provided inside the magnetism isolating groove 22 to block the permanent magnet 24 from moving toward the axial center of the core 20
In some examples, the mounting groove 21 and the magnetism isolating groove 22 respectively have side ring wall surfaces arranged at intervals in the circumferential direction of the rotor, and the side ring wall surface of the mounting groove 21 is connected with the side ring wall surface of the magnetism isolating groove 22 on the corresponding side, so that the mounting groove 21 and the corresponding magnetism isolating groove 22 form an integral through groove structure; at least one side ring wall surface of the magnetism isolating groove 22 is convexly provided with a boss, and a positioning piece 23 is formed by the boss to prevent the permanent magnet 24 from moving towards the axial center direction of the iron core 20. The bosses may be formed integrally with the core 20 and processed to form the bosses when the magnetism isolating grooves 22 and the mounting grooves 21 are processed. In order to improve the stability of the permanent magnet 24, the boss is arranged at the position of the magnetism isolating groove 22 close to the installation groove 21, so that when the boss abuts on the positioning surface of the permanent magnet 24, the permanent magnet 24 is blocked in the installation groove 21, and the radial play of the permanent magnet 24 is prevented.
Referring to fig. 2, 4 and 6, in some examples, on the basis of any of the above examples, the boss has a bottom connected to the side ring wall surface of the magnetism isolating groove 22 and a top protruding into the magnetism isolating groove 22, and the top of the boss may be in a circular arc shape. In some examples, the difference from the previous example is that, in a cross section perpendicular to the axial direction of the core 20, the boss has a circular arc shape, an isosceles triangle shape, or other polygonal shapes.
In some examples, on the basis of any one of the above examples, the permanent magnets 24 are grouped two by two to form a permanent magnet pair, the magnetic isolation slots 22 corresponding to the permanent magnets 24 in the same permanent magnet pair are communicated with each other, and a gap is formed between the two permanent magnets 24 in the same permanent magnet pair, so that the two permanent magnets 24 in the same permanent magnet pair are isolated from magnetism through air. When forming the boss, the boss may be provided on the side ring wall surfaces of the two magnetism isolating grooves 22 of the permanent magnet pair, and the boss abuts against the positioning surface of the permanent magnet 24 to restrict the radial movement of the permanent magnet 24. Further, in some examples, the flux barriers 22 of adjacent permanent magnet pairs are separated from each other by tie bars 26. The permanent magnets 24 of adjacent pairs of permanent magnets are prevented from generating magnetic flux leakage by the connecting ribs 26.
Referring to fig. 2, 4 and 6 in combination with fig. 7, in some examples, the positioning element 23 is a boss protruding into the magnetism isolating slot 22, the magnetism isolating slot 22 has side ring wall surfaces spaced along the circumferential direction of the iron core 20, and the boss is disposed on the side ring wall surface of the magnetism isolating slot 22. In a direction perpendicular to the axial direction of the core 20, such as the radial direction of the core 20 in fig. 1, the maximum width of the boss is d; the permanent magnet 24 has a thickness d in the circumferential direction of the core 20 1 (ii) a The height of the boss is r; wherein r is not less than d 1 And r is not more than d 1 /4. The bosses are used for blocking the permanent magnets 24 from moving towards the axial direction of the iron core 20 so as to prevent the permanent magnets 24 from entering the magnetism isolating grooves 22. By limiting the height and maximum width of the boss, the boss can be made to assume a relatively stable state and to have a predetermined strength property to be able to resist movement of the permanent magnet 24. Meanwhile, the diameter of the boss is far smaller than the width of the magnetism isolating groove 22, so that the reduction of a refrigerant circulation channel caused by the overlarge space occupied by the boss in the magnetism isolating groove 22 is avoided; while ensuring the permanent magnet 24 to be fixed, the magnetic leakage path is not increased, and the magnetic flux leakage device is provided withGood magnetic isolation effect.
Referring to fig. 2, 4 and 6 in combination with fig. 7, in some examples, the positioning element 23 is a boss protruding into the magnetism isolating slot 22, the magnetism isolating slot 22 has side ring wall surfaces spaced along the circumferential direction of the iron core 20, and the boss is disposed on the side ring wall surface of the magnetism isolating slot 22. In a direction perpendicular to the axial direction of the core 20, such as the radial direction of the core 20 in fig. 1, the maximum width of the boss is d; the width of the magnetism isolating groove 22 is d 2 I.e. the shortest distance d between the inner ring wall surface of the mounting groove 21 and the positioning surface of the permanent magnet 24 2 (ii) a Wherein d is not less than d 2 And d is not more than d 2 /2. The larger the boss width d is, the poorer the magnetic isolation effect is, and the more the magnetic flux leakage is; the smaller the boss width d is, the smaller the boss is, and the effect of fixing the permanent magnet 24 cannot be achieved, so that the magnetic isolation effect can be ensured by determining the proportional relation between the width of the magnetic isolation groove 22 and the boss width, the strength performance of the boss is improved, and the limiting effect of the boss on the permanent magnet 24 can be ensured.
Referring to fig. 2, 4 and 6 in combination with fig. 7, in some examples, the positioning element 23 is a boss protruding into the magnetism isolating slot 22, the magnetism isolating slot 22 has side ring wall surfaces spaced along the circumferential direction of the iron core 20, and the boss is disposed on the side ring wall surface of the magnetism isolating slot 22. The permanent magnet 24 has a thickness d in the circumferential direction of the core 20 1 (ii) a In an axial direction perpendicular to the core 20, such as a radial direction of the core 20 in fig. 1, the width of the permanent magnet is L; wherein d is 1 Not less than L/8, and d 1 Not more than L/2. Since the bosses act on the permanent magnets 24, by defining the width and thickness ratio of the permanent magnets 24, the demagnetization resistance of the permanent magnets 24 is ensured and the magnetic flux can be supplied.
Referring to fig. 8, the present invention further provides a stator 10 adapted to the rotor in any of the above embodiments, wherein the stator 10 is disposed around the rotor.
The stator 10 can be composed of stator punching sheets, the stator 10 is provided with stator slots 11, and the number of the stator slots 11 is matched with the number of the permanent magnets 24 of the rotor. In some examples, the ratio between the number of stator slots 11 of the stator 10 and the number of permanent magnets 24 is 3/2; alternatively, the ratio between the number of stator slots 11 and the number of permanent magnets 24 of the stator 10 is 6/5. The multi-groove structure is adopted, so that the reduction of the copper consumption of the winding is facilitated; the utilization of the multi-pole structure is beneficial to increasing the length of the working surface of the permanent magnet 24, improving the total magnetic flux and improving the efficiency.
Referring to fig. 8, in some examples, the stator 10 is composed of a stator lamination, the inner diameter of the stator lamination is Di, and the outer diameter of the stator lamination is D 1 Wherein 0.65 is not less than Di/D 1 Not less than 0.5. The ratio of the inner diameter to the outer diameter of the stator lamination of the stator 10 is a split ratio, and the split ratio is selected in the range, so that the formed motor has higher cost performance, for example, the outer diameter D of the stator 10 is 1 Taking 101.15mm and the inner diameter Di of the stator 10 1 Taking 62.7mm, the large split ratio is beneficial to the rotor side to have a larger space for placing the permanent magnet 24, so that the magnetic flux can be improved, and the demagnetization resistance of the permanent magnet 24 can be improved.
It is worth noting that, because the stator 10 of the present invention is adapted to the rotor in the above example, the examples of the stator 10 of the present invention include all the technical solutions of all the examples of the above rotor, and the achieved technical effects are also completely the same, and are not described herein again.
The present invention further provides a motor comprising a rotor as in any of the above examples and a stator 10 as in any of the above examples, wherein the stator 10 is arranged around the outside of the rotor, and the stator 10 is arranged coaxially with the rotor. Because the utility model discloses a motor is based on above-mentioned stator 10 and rotor, consequently, the utility model discloses the example of motor includes the whole technical scheme of above-mentioned stator 10 and rotor, and the technological effect that reaches is also identical, no longer gives unnecessary details here.
The present invention also proposes, on the basis of the example of a rotor or stator 10 as described above, an example of a compressor comprising a rotor as described in any of the examples and/or a stator 10 as described in any of the examples as described above. Because the utility model discloses a compressor is based on above-mentioned stator 10 or rotor, consequently, the utility model discloses the example of compressor includes all technical scheme of above-mentioned stator 10 and/or rotor, and the technological effect that reaches is also identical, no longer gives unnecessary details here.
The utility model discloses on the basis of above-mentioned compressor, still provide a refrigeration plant's example, refrigeration plant includes the compressor as in above-mentioned example. Because the utility model discloses a refrigeration plant is based on above-mentioned compressor, consequently, the utility model discloses refrigeration plant's example includes all technical scheme of above-mentioned compressor, and the technological effect that reaches is also identical, no longer gives unnecessary details here.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (14)
1. A rotor, comprising:
the iron core is provided with a plurality of mounting grooves; and
the permanent magnet is arranged in the mounting groove;
a magnetism isolating groove is formed in one side, facing the axis of the iron core, corresponding to each permanent magnet, and the magnetism isolating groove is communicated with the installation groove; and the iron core is provided with a positioning piece for limiting the permanent magnet to move towards the magnetism isolating groove.
2. The rotor as claimed in claim 1, wherein the number of the positioning members is plural, and each of the magnetism isolating grooves is provided with at least one positioning member.
3. The rotor of claim 2, wherein the permanent magnet has a positioning surface facing the magnetism isolating groove; the positioning piece is abutted against the positioning surface.
4. The rotor according to claim 3, wherein in the single mounting groove, the mounting groove and the magnetism isolating groove respectively have side ring wall surfaces arranged at intervals in the circumferential direction of the rotor, and the side ring wall surface of the mounting groove is connected with the side ring wall surface of the magnetism isolating groove on the corresponding side; at least one side ring wall surface of the magnetism isolating groove is convexly provided with a boss, and the boss forms the positioning piece.
5. The rotor of claim 4, wherein the permanent magnets have a thickness d in a circumferential direction of the core 1 (ii) a The height of the boss is r; wherein r is not less than d 1 And r is not more than d 1 /4。
6. The rotor of claim 4, wherein a maximum width of the boss in a direction perpendicular to an axial direction of the core is d; the width of the magnetism isolating groove is d 2 (ii) a Wherein d is not less than d 2 And d is not more than d 2 /2。
7. The rotor according to any one of claims 1 to 6, wherein the permanent magnets have a thickness d in a circumferential direction of the core 1 (ii) a In the axial direction perpendicular to the iron core, the width of the permanent magnet is L; wherein d is 1 Not less than L/8, and d 1 Not more than L/2.
8. The rotor according to any one of claims 1 to 6, wherein the permanent magnets are grouped two by two to form permanent magnet pairs, and the magnetic isolation grooves corresponding to the permanent magnets in the same permanent magnet pair are communicated with each other; the magnetic isolation grooves of the adjacent permanent magnet pairs are mutually isolated through connecting ribs.
9. A stator adapted to a rotor according to any one of claims 1 to 8, wherein the stator is enclosed outside the rotor.
10. The stator as claimed in claim 9, wherein the stator is composed of stator laminations, the inner diameter of the stator laminations is Di, and the outer diameter of the stator laminations is D 1 Wherein 0.65 is not less than Di/D 1 ≥0.5。
11. The stator according to claim 9, wherein the ratio between the number of stator slots of the stator and the number of permanent magnets is 3/2;
alternatively, the ratio between the number of stator slots of the stator and the number of permanent magnets is 6/5.
12. An electric machine, comprising:
a rotor according to any one of claims 1 to 8; and
a stator as claimed in any one of claims 9 to 11, which is enclosed outside the rotor and is disposed coaxially with the rotor.
13. A compressor, characterized by comprising an electric motor according to claim 12.
14. A refrigeration apparatus, characterized by comprising a compressor as claimed in claim 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222344824.3U CN218733480U (en) | 2022-09-01 | 2022-09-01 | Rotor, stator, motor, compressor and refrigeration plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222344824.3U CN218733480U (en) | 2022-09-01 | 2022-09-01 | Rotor, stator, motor, compressor and refrigeration plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218733480U true CN218733480U (en) | 2023-03-24 |
Family
ID=85632825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222344824.3U Active CN218733480U (en) | 2022-09-01 | 2022-09-01 | Rotor, stator, motor, compressor and refrigeration plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218733480U (en) |
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2022
- 2022-09-01 CN CN202222344824.3U patent/CN218733480U/en active Active
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