CN210111726U - Rotor, motor, compressor and refrigeration plant - Google Patents

Abstract

The utility model provides a rotor, a motor, a compressor and a refrigeration device, wherein the rotor comprises a rotor core, a plurality of mounting grooves are arranged on the rotor core, and the mounting grooves are distributed along the circumferential direction of the rotor core; and the slits are arranged on the rotor core and are positioned on one side of a part of the mounting grooves, which faces away from the rotating axis of the rotor. The utility model provides a rotor, including rotor core and a plurality of slits of setting on rotor core, be provided with a plurality of mounting grooves on the rotor core, the slit is located one side that the mounting groove deviates from the rotation axis of rotor, the air gap flux density harmonic of motor can be optimized in the setting of slit, wherein, one side that a part mounting groove in a plurality of mounting grooves deviates from the rotation axis of rotor is provided with the slit, one side that another part mounting groove deviates from the rotation axis of rotor does not set up the slit, when having realized weakening rotor air gap flux density harmonic, the excitation of having guaranteed rotor permanent magnet is used.

Description

Rotor, motor, compressor and refrigeration plant

Technical Field

The utility model relates to a compressor technical field particularly, relates to a rotor, a motor, a compressor and refrigeration plant.

Background

At present, in the related art, some magnetism isolating grooves are mostly arranged on the outer edges of the magnet grooves of the rotor core to optimize the air gap flux density harmonic of the motor, but the arrangement of the magnetism isolating grooves weakens the excitation of the magnet of the motor, more magnets are needed to achieve the same excitation effect, and the cost of the motor is increased. However, if no magnetic isolation slot is provided, the air gap flux density of the motor has more harmonic content and the harmonic torque is larger, so that the torque fluctuation of the motor is larger and the electromagnetic noise is worsened.

SUMMERY OF THE UTILITY MODEL

The present invention aims at least solving one of the technical problems existing in the prior art or the related art.

To this end, a first aspect of the present invention provides a rotor.

The second aspect of the present invention also provides a motor.

The third aspect of the present invention also provides a compressor.

The fourth aspect of the present invention also provides a refrigeration apparatus.

In view of the above, a first aspect of the present invention provides a rotor, which includes a rotor core, wherein the rotor core is provided with a plurality of mounting grooves, and the mounting grooves are distributed along a circumferential direction of the rotor core; and the slits are arranged on the rotor core and are positioned on one side of a part of the mounting grooves, which faces away from the rotating axis of the rotor.

The utility model provides a rotor, including rotor core and a plurality of slits set up on rotor core, rotor core is last to be provided with a plurality of mounting grooves, specifically, the mounting groove is used for installing the permanent magnet in order to form the magnetic pole, on rotor core, the slit is located the mounting groove and deviates from one side of the rotation axis of rotor, the air gap flux density harmonic of motor can be optimized in the setting of slit, wherein, one side that partly mounting groove deviates from the rotation axis of rotor in a plurality of mounting grooves is provided with the slit, another part mounting groove does not deviate from one side of the rotation axis of rotor and does not have the slit, when weakening rotor air gap flux density harmonic, the excitation application of rotor permanent magnet is guaranteed, compare in the correlation technique, the back emf of rotor has obtained the improvement in the technical scheme that all mounting grooves deviate from one side of the rotation axis of rotor and all set up the slit, and then under the prerequisite of the same output, the current of stator part reduces, the copper loss reduces, and then has improved the efficiency of motor.

According to the utility model provides an above-mentioned rotor can also have following additional technical characterstic:

in any of the above technical solutions, preferably, the number of the mounting grooves is 2P, and slits are provided on one side of the P mounting grooves away from the rotation axis of the rotor core.

In this technical scheme, the quantity of mounting groove is 2P, wherein one side that P mounting grooves deviate from rotor core's axis of rotation is provided with the slit, one side that P mounting grooves deviate from rotor core's axis of rotation does not set up the slit in addition, thereby make the circumferential direction along rotor core, the distribution of slit is more even, and then make the rotor can not have the skew rotation axis's of barycenter condition at the rotation in-process, maintain the dynamic balance of motor, reduce the phenomenon of bearing structure's local wear aggravation.

In the above technical solution, preferably, the slits are provided at intervals on a side of the plurality of mounting grooves facing away from the rotation axis of the rotor in the circumferential direction of the rotor core.

In this technical scheme, along rotor core's circumference, the slit interval sets up in the one side that a plurality of mounting grooves deviate from the rotation axis of rotor, the one side that also deviates from rotor core's rotation axis is provided with the mounting groove of slit, do not have the mounting groove interval setting of slit with the one side that deviates from rotor core's rotation axis, can make the rotor at rotatory in-process, the condition that the centre of mass deviates from the rotation axis can not exist, maintain the dynamic balance of motor, reduce the phenomenon that bearing structure's local wear aggravates.

In any one of the above aspects, preferably, the outer peripheral wall of the rotor core is recessed in the direction of the rotation axis of the rotor to form a recessed portion, and the recessed portion is provided near an end of the mounting groove.

In this technical scheme, rotor core's periphery wall is provided with the depressed part for rotor core's periphery wall is not complete circle, and then improves the air gap flux density harmonic, effectively reduces motor vibration, and simple structure, easily production manufacturing.

In any of the above technical solutions, preferably, the rotor further includes a permanent magnet disposed in the mounting groove to form a magnetic pole; the center line of any magnetic pole passing through the axis of the rotor core is set as a d axis, and the slits are symmetrically arranged along the d axis.

In the technical scheme, the permanent magnets are arranged in the mounting grooves to form magnetic poles, the magnetic poles formed by the permanent magnets in the adjacent mounting grooves are opposite, the center line of any magnetic pole passing through the axis of the rotor core is set to be a d axis, slits are arranged in the mounting grooves on one sides of the mounting grooves departing from the rotation axis of the rotor, and the slits on one sides of the mounting grooves departing from the rotation axis of the rotor are symmetrically arranged along the d axis, so that the back electromotive force waveform of the motor is approximate to a sine wave, the back electromotive force waveform distortion is reduced, and the increase of additional loss is reduced.

In any of the above technical solutions, preferably, the number of the slits of any one of the mounting grooves on the side away from the rotation axis of the rotor is 4 or 6, among the plurality of mounting grooves on which the slits are provided on the side away from the rotation axis of the rotor.

In this technical scheme, how much of the quantity of slit influences the suppression effect to stator armature magnetic field, generally, the quantity of slit is more, it is better to the suppression effect in stator armature magnetic field, but the quantity is too much can reduce the back emf, increase the manufacturing degree of difficulty simultaneously, therefore, set up the quantity of slit to 4 or 6, avoided the problem that the quantity of slit is too much among the correlation technique causes rotor core structural strength to reduce, the magnetic flux descends, the tooth's socket torque increases, avoided the less problem that can't improve the radial force of motor effectively of quantity of slit simultaneously, through setting up the quantity of slit in reasonable within range, can guarantee rotor core's reliability, under the condition of convenient processing, guarantee effectively that the motor is good noise reduction effect and back emf effect, promote the price/performance ratio of motor.

In any of the above technical solutions, preferably, on the same side of the d-axis, an included angle between two slits close to the d-axis is less than or equal to 8 °.

In the technical scheme, the included angle between the two slits close to the d axis is smaller than or equal to 8 degrees on the same side of the d axis, so that the extending directions of the slits are approximately the same, and further the optimization of the air gap flux density harmonic of the motor is improved.

In any of the above technical solutions, preferably, an included angle between a side surface of the slit in the length direction and a wall surface of a side of the corresponding mounting groove facing away from the rotation axis of the rotor is greater than or equal to 90 ° and less than or equal to 110 °.

In the technical scheme, the air gap magnetic field waveform can be improved by limiting the setting angle of the slit in a reasonable range, the armature iron loss is effectively reduced, and the low-frequency energy efficiency in the compressor is improved, specifically, the included angle between the side wall in the length direction of the slit and the wall surface of one side of the mounting groove, which deviates from the rotating axis of the rotor, is limited between 90 degrees and 110 degrees.

According to the utility model discloses a second aspect still provides a motor, include: the rotor provided by any one of the technical solutions.

The utility model discloses the motor that the second aspect provided, because of the rotor that provides including above-mentioned arbitrary technical scheme, consequently have the whole beneficial effect of rotor.

In the above technical solution, preferably, the motor further includes: the stator is enclosed in the outside of rotor, and the rotor rotates with the stator and is connected.

In this technical scheme, the motor still includes the stator, and the stator encloses the outside of locating the rotor, specifically, and the stator includes stator core and sets up a plurality of tooth portions at the stator core inside wall, and a plurality of tooth portions distribute along stator core's circumference, and wherein, stator core is piled up and is constituted by certain quantity, according to the piece of punching of regulation shape, and wherein the piece of punching can be silicon steel sheet.

According to the utility model discloses a third aspect still provides a compressor, include: a rotor according to any of the above aspects; or a motor as proposed in any of the above-mentioned second aspects.

The third aspect of the present invention provides a compressor, comprising a rotor according to any one of the above-mentioned first aspect; or the motor according to any of the above-mentioned second aspects, thereby having all the advantages of the rotor or the motor.

According to the utility model discloses a fourth aspect still provides a refrigeration plant, include: a rotor according to any of the above aspects; or the motor according to any of the above-mentioned second aspects; or a compressor as set forth in any of the above-mentioned third aspects.

The refrigeration equipment provided by the fourth aspect of the present invention includes the rotor provided by any one of the above technical solutions of the first aspect; or the motor according to any of the above-mentioned second aspects; or the compressor according to any of the above-mentioned third aspects, thereby having all the advantages of the rotor or the motor or the compressor.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 shows a schematic structural view of a rotor according to an embodiment of the present invention;

fig. 2 shows another schematic structural view of a rotor according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 and fig. 2 is:

1 rotor, 10 rotor core, 12 mounting slots, 14 slots, 16 recesses, 18 fastening holes.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

A rotor 1, a motor, a compressor, and a refrigerating apparatus according to some embodiments of the present invention will be described with reference to fig. 1 and 2.

As shown in fig. 1 and 2, according to an embodiment of the first aspect of the present invention, the present invention provides a rotor 1 including a rotor core 10 and a plurality of slits 14.

Specifically, the rotor core 10 is provided with a plurality of mounting grooves 12, and the mounting grooves 12 are distributed along the circumferential direction of the rotor core 10; a plurality of slits 14 are provided on the rotor core 10, and the slits 14 are located on a side of a part of the plurality of mounting grooves 12 facing away from the rotational axis of the rotor 1.

The utility model provides a rotor 1, including rotor core 10 and a plurality of slits 14 that set up on rotor core 10, be provided with a plurality of mounting grooves 12 on rotor core 10, specifically, mounting groove 12 is used for installing the permanent magnet in order to form the magnetic pole, on rotor core 10, slits 14 are located the mounting groove 12 and deviate from the one side of the rotation axis of rotor 1, the setting of slits 14 can optimize the air gap flux density harmonic of motor, wherein, one side that a part mounting groove 12 deviates from the rotation axis of rotor 1 in a plurality of mounting grooves 12 is provided with slits 14, another part mounting groove 12 is not provided with slits 14 on the side that deviates from the rotation axis of rotor 1, realized weakening rotor 1 air gap flux density harmonic simultaneously, guaranteed the excitation application of rotor 1 permanent magnet, compare with the embodiment that in the relevant art, slit 14 was all set up to one side that all mounting grooves 12 deviate from the rotation axis of rotor 1, the back electromotive force of the rotor 1 is improved in the embodiment provided by the application, and then on the premise of the same output power, the current of the stator part is reduced, the copper loss is reduced, and the efficiency of the motor is improved.

Specifically, as shown in fig. 1, the rotor 1 includes a rotor core 10 and mounting grooves 12 disposed on the rotor core 10, the mounting grooves 12 are disposed along a rotation axis direction of the rotor 1, the number of the mounting grooves 12 is plural, the plurality of mounting grooves 12 are distributed along a circumferential direction of the rotor core 10, specifically, the plurality of mounting grooves 12 are uniformly distributed on the rotor core 10, so that a magnetic field generated by a permanent magnet disposed in the mounting groove 12 is more uniform, and a situation that a center of mass deviates from a rotation axis center in a rotation process of the rotor 1 is prevented. Because the slits 14 can weaken the air gap flux density harmonic of the rotor 1 and can also weaken the magnet excitation, the slits 14 are not arranged on the rotor core 10 on one side of all the mounting grooves 12 departing from the rotation axis of the rotor 1, namely, the slits 14 are arranged on one side of one part of the mounting grooves 12, and the slits 14 are not arranged on one side of the other part of the mounting grooves 12, so that the air gap flux density harmonic of the rotor 1 is weakened, the excitation application of the permanent magnet of the rotor 1 is ensured, the power of the motor is improved, and the noise of the motor is reduced.

Example one

According to an embodiment of the invention, in addition to the features defined in the above embodiment, there is further defined: the slits 14 are provided at intervals in the circumferential direction of the rotor core 10 on a side of the plurality of mounting grooves 12 facing away from the rotational axis of the rotor 1.

In this embodiment, the rotor 1 includes a stator core and a slit 14 disposed on the stator core, the slit 14 is disposed to optimize air gap flux density harmonics of the motor, thereby improving radial force of the motor and reducing noise of the motor, on the rotor core 10, a part of the mounting grooves 12 is provided with the slit 14 on a side away from a rotation axis of the rotor 1, and another part of the mounting grooves 12 is not provided with the slit 14 on a side away from the rotation axis of the rotor 1, further, along a circumferential direction of the rotor core 10, the slits 14 are disposed at intervals on a side of the mounting grooves 12 away from the rotation axis of the rotor 1, that is, a side away from the rotation axis of the rotor core 10 is provided with the mounting grooves 12 of the slits 14, and is disposed at intervals with the mounting grooves 12 not provided with the slits 14 on a side away from the rotation axis of the rotor core 10, so that a center of mass of the, the dynamic balance of the motor is maintained, and the phenomenon of aggravation of local abrasion of the supporting structure is reduced.

Specifically, as shown in fig. 1 and 2, the mounting grooves 12 provided with the slits 14 on the side away from the rotation axis of the rotor 1 and the mounting grooves 12 not provided with the slits 14 on the side away from the rotation axis of the rotor 1 are provided at intervals one by one.

Preferably, the number of mounting grooves 12 is 2P, wherein a slit 14 is provided on one side of P mounting grooves 12 away from the rotation axis of rotor core 10, and a slit 14 is not provided on one side of P mounting grooves 12 away from the rotation axis of rotor core 10, so that the distribution of slits 14 is more uniform along the circumferential direction of rotor core 10, and further, the condition that the center of mass deviates from the rotation axis during the rotation of rotor 1 is avoided, the dynamic balance of the motor is maintained, and the phenomenon that the local wear of the supporting structure is aggravated is reduced.

Example two

As shown in fig. 2, according to an embodiment of the present invention, in addition to the features defined in the above embodiment, there are further defined: the outer peripheral wall of the rotor core 10 is recessed in the rotational axis direction of the rotor 1 to form a recessed portion 16, and the recessed portion 16 is provided near the end of the mounting groove 12.

In this embodiment, the outer peripheral wall of the rotor core 10 is provided with the recessed portion 16, so that the outer peripheral wall of the rotor core 10 is not a complete circle, thereby improving the air gap flux density harmonic, effectively reducing the motor vibration, and having a simple structure and easy production and manufacture.

Specifically, the number of the recessed portions 16 on the side of any one of the mounting grooves 12 facing away from the rotation axis of the rotor is two, and the two recessed portions 16 correspond to the two ends of the mounting groove 12, respectively.

EXAMPLE III

As shown in fig. 1, according to an embodiment of the present invention, in addition to the features defined in the above embodiment, there is further defined: the rotor 1 further includes a permanent magnet disposed in the mounting groove 12 to form a magnetic pole; the center line of any magnetic pole passing through the axial center of the rotor core 10 is defined as a d-axis, and the slits 14 are symmetrically arranged along the d-axis.

In this embodiment, the permanent magnets are arranged in the mounting grooves 12 to form magnetic poles, and the magnetic poles formed by the permanent magnets in adjacent mounting grooves 12 are opposite, wherein the center line of any magnetic pole passing through the axis center of the rotor core 10 is set as the d axis, and in the mounting grooves 12 in which the slits 14 are arranged on the side away from the rotation axis of the rotor 1, the slits 14 on the side away from the rotation axis of the rotor 1 of any mounting groove 12 are symmetrically arranged along the d axis, so that the back electromotive force waveform of the motor is ensured to be approximate to a sine wave, the back electromotive force waveform distortion is reduced, and the increase of the additional loss is reduced.

Specifically, the permanent magnet is V type structure, and the magnetism effect that gathers that the V type magnetic pole that the V type permanent magnet formed produced is favorable to promoting the motor back electromotive force, and then is favorable to promoting the low frequency efficiency of compression, and it can be understood that the permanent magnet also can be for satisfying the permanent magnet of other shapes of requirement.

Specifically, the mounting groove 12 is of a V-shaped structure, so that when the outer diameter of the rotor 1 is reduced, the permanent magnetic excitation on the rotor 1 side is not reduced, that is, when the linear load of the motor is increased, the maintenance of the magnetic load of the motor is ensured, the power density of the motor is increased, and the material utilization rate is improved.

Specifically, any one of the mounting grooves 12 is symmetrically arranged with the d-axis as a symmetry line.

As shown in fig. 1 and 2, according to an embodiment of the present invention, in addition to the features defined in any of the above embodiments, there are further defined: of the plurality of mounting grooves 12 provided with slits 14 on the side facing away from the rotational axis of the rotor 1, the number of slits 14 on the side of any one mounting groove 12 facing away from the rotational axis of the rotor 1 is 4 or 6.

In this embodiment, the number of the slits 14 affects the suppression effect on the stator armature magnetic field, generally, the larger the number of the slits 14 is, the better the suppression effect on the stator armature magnetic field is, but the larger the number is, the back electromotive force is reduced, and the manufacturing difficulty is increased, therefore, the number of the slits 14 is set to 4 or 6, the problems of reduced structural strength, reduced magnetic flux, and increased cogging torque of the rotor core 10 caused by the larger number of the slits 14 in the related art are avoided, and the problem that the radial force of the motor cannot be effectively improved due to the smaller number of the slits 14 is also avoided.

Further, on the same side of the d-axis, the included angle between the two slits 14 close to the d-axis is less than or equal to 8 degrees, so that the extending directions of the slits 14 are approximately the same, and further, the optimization of the air gap flux density harmonic of the motor is improved.

Further, the angle between the side surface of the slit 14 in the length direction and the wall surface of the corresponding mounting groove 12 on the side away from the rotation axis of the rotor 1 is greater than or equal to 90 ° and less than or equal to 110 °.

In this embodiment, limiting the setting angle of the slit 14 within a reasonable range can improve the air gap magnetic field waveform, effectively reduce the armature iron loss, and improve the low frequency energy efficiency in the compressor, and specifically, the included angle between the side wall of the slit 14 in the length direction and the wall surface of the mounting groove 12 on the side departing from the rotation axis of the rotor 1 is limited to 90 ° to 110 °.

Specifically, in the rotor core 10, in a cross section perpendicular to the rotation axis of the rotor 1, the contour line of the slits 14 includes a straight line and/or a curved line, that is, the contour line of the slits 14 is formed by enclosing a plurality of curved lines and/or straight lines end to end. In particular, the profile of the slit 14 may be constituted by straight lines, such as square, or by curved lines, such as circular or oval or curved, of course, the profile of the slit 14 may also be constituted by straight lines and curved lines, such as a kidney-shaped hole.

Specifically, the rotor core 10 includes a plurality of punching sheets stacked one on another, specifically, the rotor core 10 is formed by stacking a plurality of punching sheets in a predetermined shape in a predetermined number, the mounting grooves 12 are disposed inside the rotor core 10 and distributed along the circumferential direction of the rotor core 10, and 2P magnetic poles with alternating polarity in the circumferential direction are formed by inserting a plurality of permanent magnets into the mounting grooves 12. Preferably, the punching sheet is a silicon steel sheet.

Specifically, a fastening hole 18 is provided between adjacent mounting slots 12, the fastening hole 18 penetrating the rotor core 10 in the rotational axis direction of the rotor core 10; the rotor 1 further comprises a connecting piece, the rotor core 10 comprises a plurality of punching pieces, the punching pieces are stacked along the rotation axis direction of the rotor core 10, and the connecting piece penetrates through the fastening hole 18 to enable the punching pieces to be connected.

Specifically, two ends of the mounting groove 12 are further provided with clearance grooves, and the clearance grooves are communicated with the mounting groove 12 and used for magnetic isolation.

As shown in fig. 1 and 2, according to a specific embodiment of the present invention, the present invention provides a rotor 1, including: rotor core 10, rotor core 10 is outer along being provided with mounting groove 12 of roughly equipartition, the shape of mounting groove 12 is the V type roughly, the quantity of mounting groove 12 is 2P, wherein P mounting groove 12 is close to the position on rotor 1 outer edge and is provided with slit 14, in addition P mounting groove 12 is outer along not having slit 14, can realize when weakening 1 air gap magnetic density harmonic of rotor, the excitation of having guaranteed rotor 1 permanent magnet is used, there is slit 14 design to compare with whole mounting groove 12 outsides in the correlation technique, rotor 1 back emf of this application obtains improving, and then under the prerequisite of same output, the electric current of stator part reduces, the copper loss reduces, efficiency improves.

Further, P mounting grooves 12 with slits 14 on the outer edge are arranged at intervals with other P mounting grooves 12 without slits 14 on the outer edge. In this embodiment, the mounting slots 12 with the slits 14 and the mounting slots 12 without the slits 14 are arranged at intervals, so that the center of mass of the rotor 1 does not deviate from the rotation axis during the rotation process, the dynamic balance of the motor is maintained, and the phenomenon of aggravated local wear of the supporting structure is reduced.

Further, the number of the slits 14 at the outer edge of each mounting groove 12 having the slits 14 is 4 or 6. In this embodiment, the number of slits 14 on the outer side of each mounting groove 12 is limited, and if the number is small, harmonics of the motor air gap flux density cannot be suppressed, and if the number is large, the excitation of the rotor 1 magnet is significantly weakened, and the purpose of increasing the excitation cannot be achieved.

Further, the slits 14 are symmetrically arranged along a symmetrical line formed between the center of the rotor 1 and the middle of the mounting groove 12. In the embodiment, the slits 14 on the outer side of the mounting groove 12 are symmetrically arranged, so that the counter potential waveform of the motor is approximately sine wave, the distortion of the counter potential waveform is reduced, and the increase of additional loss is reduced.

Example four

According to the utility model discloses a second aspect still provides a motor, include: a rotor 1 as claimed in any one of the above embodiments.

The utility model discloses the motor that the second aspect provided, because of rotor 1 including the proposition of any above-mentioned embodiment, consequently have all beneficial effects of rotor 1.

According to an embodiment of the invention, in addition to the features defined in the above embodiment, there is further defined: the motor further includes: the stator, the stator encloses the outside of locating rotor 1, and rotor 1 rotates with the stator and is connected.

In this embodiment, the motor further includes a stator, the stator is enclosed in the outside of the rotor 1, specifically, the stator includes a stator core and a plurality of teeth portions arranged on the inner side wall of the stator core, the plurality of teeth portions are distributed along the circumferential direction of the stator core, wherein the stator core is formed by stacking a certain number of punching sheets in a specified shape, and the punching sheets may be silicon steel sheets.

EXAMPLE five

According to a third aspect of the present invention, there is also provided a compressor (not shown in the figure), comprising: the rotor 1 as set forth in any of the embodiments of the first aspect above; or a motor as set forth in any of the embodiments of the second aspect above.

The third aspect of the present invention provides a compressor, comprising a rotor 1 as set forth in any one of the embodiments of the first aspect; or the motor as proposed in any of the embodiments of the second aspect described above, thus having all the benefits of the rotor 1 or the motor.

Specifically, the compressor further preferably includes: the crankshaft is arranged in the rotor core 10 of the rotor 1 in a penetrating mode and is connected with the rotor core 10; a power section coupled to the shaft and operatively configured to drive the shaft for rotation.

In this embodiment, the compressor still includes bent axle and power portion, and the bent axle wears to locate rotor core 10 of rotor 1, and bent axle connection rotor core 10 and power portion, and then can drive the bent axle and rotate and then drive rotor core 10 and rotate when power portion during operation. Specifically, the crankshaft of the compressor is connected to the rotor core 10 through the shaft hole of the rotor core 10.

Specifically, the compressor further comprises a main bearing, an auxiliary bearing, a cylinder and a piston, wherein one end of the crankshaft penetrates through the rotor 1, and the other end of the crankshaft penetrates through the main bearing, the cylinder and the auxiliary bearing in sequence.

EXAMPLE six

According to a fourth aspect of the present invention, there is also provided a refrigeration apparatus (not shown in the drawings), comprising: the rotor 1 as set forth in any of the embodiments of the first aspect above; or a motor as set forth in any of the embodiments of the second aspect above; or a compressor as set forth in any of the embodiments of the third aspect above.

The refrigeration equipment provided by the fourth aspect of the present invention includes the rotor 1 as proposed in any one of the embodiments of the first aspect; or a motor as set forth in any of the embodiments of the second aspect above; or a compressor as proposed in any of the embodiments of the third aspect described above, thus having all the benefits of the rotor 1 or the motor or the compressor.

In the present application, the term "plurality" means two or more unless expressly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly and include, for example, fixed connections, detachable connections, or integral connections; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (12)

1. A rotor, comprising:

the rotor comprises a rotor core, wherein a plurality of mounting grooves are formed in the rotor core and are distributed along the circumferential direction of the rotor core;

and the slits are arranged on the rotor iron core and are positioned on one side of a part of the mounting grooves, which is deviated from the rotating axis of the rotor, in the mounting grooves.

2. The rotor of claim 1,

the quantity of mounting groove is 2P, P the mounting groove deviates from one side of rotor core's axis of rotation is provided with the slit.

3. The rotor of claim 1,

and along the circumferential direction of the rotor core, the slits are arranged at intervals on one side of the mounting groove deviating from the rotation axis of the rotor.

4. The rotor of claim 1,

the peripheral wall of rotor core is to the rotation axis direction of rotor caves in and forms the depressed part, the depressed part is close to the tip setting of mounting groove.

5. The rotor of any one of claims 1 to 4, further comprising:

the permanent magnet is arranged in the mounting groove to form a magnetic pole;

the center line of any one of the magnetic poles passing through the axis of the rotor core is set as a d-axis, and the slits are symmetrically arranged along the d-axis.

6. The rotor of claim 5,

the number of the slits of any one mounting groove on the side away from the rotation axis of the rotor is 4 or 6.

7. The rotor of claim 6,

on the same side of the d axis, the included angle between the two slits close to the d axis is less than or equal to 8 degrees.

8. The rotor of any one of claims 1 to 4,

the included angle between the side surface of the slit along the length direction and the wall surface of the corresponding mounting groove on the side departing from the rotating axis of the rotor is greater than or equal to 90 degrees and less than or equal to 110 degrees.

9. An electric machine, comprising: a rotor according to any one of claims 1 to 8.

10. The electric machine of claim 9, further comprising:

the stator is arranged outside the rotor in a surrounding mode, and the rotor is connected with the stator in a rotating mode.

11. A compressor, comprising:

a rotor according to any one of claims 1 to 8; or

An electrical machine as claimed in claim 9 or 10.

12. A refrigeration apparatus, comprising:

a rotor according to any one of claims 1 to 8; or

An electric machine as claimed in claim 9 or 10; or

The compressor of claim 11.

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