CN212304904U - Motor, compressor and refrigeration plant - Google Patents
Motor, compressor and refrigeration plant Download PDFInfo
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- CN212304904U CN212304904U CN202022188662.XU CN202022188662U CN212304904U CN 212304904 U CN212304904 U CN 212304904U CN 202022188662 U CN202022188662 U CN 202022188662U CN 212304904 U CN212304904 U CN 212304904U
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Abstract
The utility model provides a motor, compressor and refrigeration plant, the motor includes: the stator core is provided with an inner cavity and comprises a plurality of stator slots, the number of the stator slots is Z, and the outer diameter of the stator core is D1; the rotor core is arranged in the inner cavity, and the outer diameter of the rotor core is D2; wherein, the pole number P of the motor satisfies 6 and P8, the number Z of the stator slots satisfies 36 and ZIs less than or equal to 48, and the outer diameter D1 of the stator core and the outer diameter D2 of the rotor core meet the requirement
This application can improve the output ability of motor when improving the noise through prescribing a limit to the size range of the stator core and the rotor core of above-mentioned slot utmost point complex motor for the motor that has this structure can satisfy the requirement of high-power compressor.
Description
Technical Field
The utility model relates to a compressor technical field particularly, relates to a motor, a compressor and refrigeration plant.
Background
At present, the displacement of a high-power compressor is increased, if the output capacity of a motor is poor, the problems that the high-load working condition cannot run and even the motor is jumped to stop or burnt can occur, and particularly for a distributed winding motor, the loss is large in the running process of the motor due to the fact that the end part of a stator winding of the motor is high, and the energy efficiency of the motor cannot meet the requirement of the high-power compressor.
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 is to provide an electric machine.
A second aspect of the present invention is to provide a compressor.
A third aspect of the present invention is to provide a refrigeration apparatus.
In view of this, according to the utility model discloses a first aspect provides a motor, including stator core and rotor core, wherein, stator core has the inner chamber, and stator core includes a plurality of stator slots, and the quantity of stator slot is Z, and stator core's external diameter is D1, and rotor core locates in stator core's inner chamber, and rotor core's external diameter is D2, and wherein, motor's the first aspect of the utility model provides a motorThe number of poles P is more than or equal to 6 and less than or equal to 8, the number of stator slots Z is more than or equal to 36 and less than or equal to 48, and the outer diameters D1 of the stator core and D2 of the rotor core meet
The utility model provides a motor includes stator core and rotor core, wherein, rotor core locates in stator core's the inner chamber, stator core includes a plurality of stator slots, particularly, stator slot's quantity Z satisfies 36 and is less than or equal to Z48, the number of poles of motor is 6 and is less than or equal to P and is less than or equal to 8, that is to say, to above-mentioned slot pole complex motor, through the injecing to the value range of rotor core external diameter and stator core external diameter ratio, make the size of motor can satisfy the requirement of specific stator slot quantity and number of poles, thereby can be through the quantity that increases stator slot, make the magnetic field distribution of motor more even, and then reduce the production of harmonic, can effectively noise reduction's influence. Meanwhile, for the coils with the same length, the number of the stator slots is limited in a large range, the coil end parts wound by the stator windings can be located at a relatively lower position in the axial direction of the stator core, namely, the coil end parts wound by the coils are located in the stator core with the large number of the stator slots, and the coil end parts can be lower in the axial direction of the stator core than the coil end parts wound by the coils in the stator core with the small number of the stator slots, so that the loss of the coil end parts of the stator windings can be reduced, and the energy efficiency of the motor is further improved.
Particularly, for the application occasion of the high-power compressor, because the rotating speed of the motor is higher, the noise of the compressor is also higher, the influence of the noise can be effectively reduced by increasing the number of the stator slots, however, if the number of the stator slots is designed to be too large, the manufacturing difficulty can be increased, therefore, the size range of the stator core and the rotor core of the motor matched with the slot poles is limited, namely the outer diameter of the stator core and the outer diameter of the rotor core are controlled within a certain size range, the noise can be improved, meanwhile, the output capacity of the motor is improved, the energy efficiency of the motor is improved, and the motor with the structure can meet the requirement of the high-power compressor.
In addition, according to the utility model provides an among the above-mentioned technical scheme motor can also have following additional technical characteristics:
in one possible design, further, the outer diameter D1 of the stator core satisfies: d1 is more than or equal to 145mm and less than or equal to 250 mm.
In this design, further prescribe a limit to the size of motor, and the size value of this stator core can guarantee to hold the quantity of above-mentioned stator slot, and the size value of this stator core can further guarantee the quantity of stator slot promptly, and then through the injecing to the quantity of stator slot, can improve the noise under the high-power compressor application, promotes the output capacity of motor.
In one possible design, further, the thickness of the stator core is T, and the outer diameter D1 of the stator core and the thickness T of the stator core meet
In the design, under the condition that the number of the stator slots is more than or equal to 36 and less than or equal to 48 and the number of the poles of the motor is 6 to 8 in the slot pole matching, the output capacity of the motor and the efficiency of the motor can be further improved on the basis of improving the noise of the motor by limiting the ratio of the outer diameter of the stator core to the thickness of the stator core, and further the application occasion of a high-power compressor is met.
In one possible design, further, the thickness T of the stator core satisfies: t is more than or equal to 70mm and less than or equal to 160 mm.
In the design, the thickness of the stator core is further limited, the size range of the motor is further limited, namely the size value of the stator core can further ensure the number of the stator slots, and further the noise of the high-power compressor in the application occasion can be improved and the output capacity of the motor can be improved by limiting the number of the stator slots. Through the further injecture to the rotor external diameter and the stator external diameter ratio of this size range motor, can improve the output capacity of motor and the efficiency of motor on the basis of improving the motor noise, and then satisfy high-power compressor's operation requirement.
In one possible design, further, the stator core further includes a stator tooth disposed between two adjacent stator slots of the plurality of stator slots, the stator tooth having a width d, and the outer diameter of the rotor core and the width of the stator tooth satisfy:
in the design, stator teeth are arranged between two adjacent stator slots in the plurality of stator slots, wherein the number of the stator teeth is the same as that of the stator slots, and is limited by the relation between the width of the stator teeth, the outer diameter of the rotor, the number of poles of the motor and the stator slots, namely, under the condition that the number of the stator slots is not less than 36 and not more than 48 and the number of the poles of the motor is 6 to 8 poles, the width of the stator teeth and the outer diameter of the rotor are further limited by the size of the stator teeth, and further the range of the magnetic force generated by the motor can be limited. Specifically, if the magnetic force generated by the motor is too small, the power density of the motor is insufficient, that is, the output capacity of the motor is insufficient, the problem that the motor is tripped or burnt easily occurs, and materials are wasted. For the motor with the number of stator slots 112 being 36-48 and the number of poles being 6-8, the magnetic force generated by the motor is limited by limiting the width of the stator teeth and the size of the outer diameter of the rotor, so that the output capacity and the noise of the motor can be ensured at the optimum level on the basis of improving the noise of the motor.
In one possible embodiment, the electric machine further comprises a stator winding arranged on the stator teeth, wherein the stator winding is arranged on the stator teeth in a wound or embedded manner.
In this design, the motor still includes stator winding, and stator winding sets up on the stator tooth, and wherein, stator winding establishes on the stator tooth with the mode of coiling or embedding, has injectd stator winding's the position that sets up promptly, establishes stator winding on the stator tooth through the mode of coiling or embedding, can make stator winding set up in the stator iron core more steadily, and then promotes the stability of motor operation.
In one possible design, further, the inner diameter of the rotor core is d2, and the outer diameter of the rotor core and the inner diameter of the rotor core satisfy:
in the design, the value range of the ratio of the outer diameter to the inner diameter of the rotor core is limited, namely the power of the motor is limited. Specifically, the middle part of rotor core has seted up the shaft hole, and the motor shaft passes the shaft hole and cooperatees with rotor core, and if the shaft hole is less, then the motor shaft of complex with it is less for conventional motor, and then the output of motor is less, if the motor shaft hole is great, then the motor shaft of complex with it is great, and then the output of motor is great. The output power of the motor is limited by limiting the value range of the ratio of the outer diameter to the inner diameter of the rotor core, so that the motor can meet the application occasions of high power.
In one possible design, further, the stator core includes a body, and the plurality of stator slots are spaced apart in a circumferential direction of the body.
In the design, the stator core comprises a body and a plurality of stator slots, wherein the stator slots are distributed at intervals in the circumferential direction of the body, the number of the stator slots limited in the application is more than or equal to 36 and less than or equal to 48, and the plurality of stator slots are arranged at intervals in the circumferential direction of the body, so that the magnetic field of the motor is more uniform.
According to the utility model discloses a second aspect provides a compressor, including the motor that any one of above-mentioned technical scheme provided.
The utility model provides a compressor, including any one of the above-mentioned technical scheme the motor, consequently have the whole beneficial effect of this motor, no longer describe here.
Further, the compressor further includes a housing configured to have a configuration of a cavity, the motor being disposed within the cavity.
According to the utility model discloses a third aspect provides a refrigeration plant, includes the compressor that any one of above-mentioned technical scheme provided.
The utility model provides a refrigeration plant, including any one of the above-mentioned technical scheme the compressor, consequently have whole beneficial effect of this compressor, no longer give consideration to here.
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 an electric machine according to an embodiment of the invention;
fig. 2 shows a schematic diagram of the value of the ratio of the rotor core outer diameter D2 to the stator core outer diameter D1 versus the motor efficiency according to an embodiment of the present invention;
fig. 3 shows a schematic diagram of the relationship between the value of the ratio of the rotor core outer diameter D2 to the stator core outer diameter D1 and the maximum power of the motor according to an embodiment of the present invention;
fig. 4 shows a schematic diagram of the relationship between the value of the ratio of the stator core outer diameter D1 to the stator core thickness T and the motor efficiency according to an embodiment of the present invention;
fig. 5 shows a schematic structural view of an electric machine according to another embodiment of the invention;
fig. 6 shows a schematic structural view of a compressor according to an embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 6 is:
100 motor, 110 stator core, 112 stator slot, 114 stator tooth, 120 stator winding, 130 rotor core.
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.
The motor 100, the compressor, and the refrigerating apparatus according to some embodiments of the present invention are described below with reference to fig. 1 to 6.
Example one
According to an embodiment of the first aspect of the present invention, as shown in fig. 1, a motor 100 is provided, including a stator core 110 and a rotor core 130, wherein the stator core 110 has an inner cavity, the stator core 110 includes a plurality of stator slots 112, the number of the stator slots 112 is Z, the outer diameter of the stator core 110 is D1, the rotor core 130 is disposed in the inner cavity of the stator core 110, the outer diameter of the rotor core 130 is D2, wherein the number P of poles of the motor 100 is 6 or more and P or less than 8, the number Z of the stator slots 112 is 36 or more and Z or less than 48, the outer diameter D1 of the stator core 110 and the outer diameter D2 of the rotor core 130 are satisfied
The utility model provides a motor 100 includes stator core 110 and rotor core 130, wherein, rotor core 130 is located in stator core 110's inner chamber, stator core 110 includes a plurality of stator slots 112, particularly, stator slot 112's quantity Z satisfies 36 and is less than or equal to Z and is less than or equal to 48, motor 100's number of poles is 6 and is less than or equal to P and is less than or equal to 8, that is to say, to above-mentioned slot pole complex motor 100, through the injecing of the value scope to rotor core 130 external diameter and stator core 110 external diameter ratio, make motor 100's size can satisfy the requirement of specific stator slot 112 quantity and number of poles, thereby can be through the quantity that increases stator slot 112, make motor 100's magnetic field distribution more even, and then reduce the production of harmonic, can effectively noise reduction's influence. Meanwhile, for the coils with the same length, because the number of the stator slots 112 is limited in a larger range, the coil end portions of the coils wound by the stator winding 120 can be located at a relatively lower position in the axial direction of the stator core 110, that is, the coils are wound at the positions of the coil end portions in the stator core 110 with the larger number of the stator slots 112, and can be lower in the axial direction of the stator core 110 than the positions of the coil end portions in the stator core 110 with the smaller number of the stator slots 112, so that the loss of the coil end portions of the stator winding 120 can be reduced, and the energy efficiency of the motor 100 can be further improved.
Specifically, for the application of the high-power compressor, because the rotating speed of the motor 100 is high, the noise of the compressor is also high, and the influence of the noise can be effectively reduced by increasing the number of the stator slots 112, however, if the number of the stator slots 112 is designed to be too large, the manufacturing difficulty is increased, so the present application limits the structure of the stator core 110 and the rotor core 130 of the motor 100 with the slot poles matched, that is, controls the outer diameter of the stator core 110 and the outer diameter of the rotor core 130 within a certain size range, and can improve the output capacity of the motor 100, improve the energy efficiency of the motor 100, and enable the motor 100 with the structure to meet the requirements of the high-power compressor.
As is apparent from fig. 2 and 3, as the ratio D2/D1 increases, the efficiency and the maximum power of the motor 100 increase first and then decrease, and when the motor is in a magnetic saturation state at the back, the output power of the motor 100 decreases, that is, the efficiency and the maximum power of the motor 100 can be ensured to be in an optimal state near 0.58, at this time, the copper loss of the whole motor 100 decreases, the increase of the iron loss decreases, and the energy efficiency of the motor 100 is further improved.
Example two
On the basis of the first embodiment, the size of the outer diameter of the stator core 110 is specifically limited, and further, the outer diameter D1 of the stator core 110 satisfies: d1 is more than or equal to 145mm and less than or equal to 250 mm.
In this embodiment, the size of the motor 100 is further limited, and the size of the stator core 110 can ensure that the number of the stator slots 112 is accommodated, that is, the size of the stator core 110 can further ensure the number of the stator slots 112, so that the number of the stator slots 112 is limited, noise in the application field of the high-power compressor can be improved, and the output capacity of the motor 100 is improved.
It should be noted that, if the stator core 110 is too small, the requirement of the number of the stator slots 112 cannot be satisfied, and if the stator core 110 is too large, the motor 100 occupies a large space and wastes materials.
EXAMPLE III
In addition to the above-described embodiments, as shown in fig. 4 and 5, the thickness of the stator core 110 is T, and the outer diameter D1 of the stator core 110 and the thickness T of the stator core satisfy
In this embodiment, the value of the ratio of the outer diameter of the stator core 110 to the thickness of the stator core 110 is limited, that is, the ratio of the outer diameter of the stator core 110 to the thickness of the stator core 110 is limited, so that the output capacity of the motor 100 and the efficiency of the motor 100 can be further improved on the basis of improving the noise of the motor 100 by limiting the ratio of the outer diameter of the stator core 110 to the thickness of the stator core 110 under the condition that the number of the stator slots 112 is 36 or more and less than or equal to Z and 48 and the number of poles of the motor 100 is 6 to 8, thereby meeting the application occasion of a high-power compressor.
Wherein, with
The ratio is increased, the efficiency of the motor 100 is increased and then decreased, and by the time of the later magnetic saturation, the efficiency of the motor 100 is decreased, i.e., at the time of the later magnetic saturation
The range of (2) is higher in motor efficiency, and the value range of the ratio between the outer diameter D1 of the stator core 110 and the thickness T of the stator core 110 is further limited, so that the efficiency and the maximum power of the motor 100 can be ensured to be in the best state, the overall copper loss of the motor 100 is reduced, the increase range of the iron loss is reduced, and the energy efficiency of the motor 100 is improved.
In a specific embodiment, as shown in fig. 4, further, between the outer diameter of the stator core 110 and the thickness of the stator core 110,
the efficiency of the motor is further improved, that is, when the ratio of the outer diameter of the stator core 110 to the thickness of the stator core 110 can further satisfy 1.3 to 2.5, the efficiency of the motor 100 can be more than 95%, and the efficiency and the maximum power of the motor 100 are further ensured to be at the optimal level.
Of course, it can be understood that when the ratio of the outer diameter of the stator core 110 to the thickness of the stator core 110 is 1.1 to 1.3, or 2.5 to 2.71, the efficiency of the motor 100 can be about 95%, the efficiency of the motor 100 is higher, and the efficiency and the maximum power of the motor 100 can be better.
Wherein, it should be noted that stator core 110 is formed by piling up a certain number of stator punching sheets, every stator punching sheet has certain thickness, also pile up stator core 110 of certain thickness for the stator punching sheet of certain number, stator core 110 is piled up and the punching press through the stator punching sheet that has the regulation shape with a certain number of pieces and is formed, specifically speaking, the stator punching sheet can be the silicon steel sheet, the silicon steel sheet can reduce eddy current loss and hysteresis loss, and then reduce the iron core and generate heat, and a plurality of silicon steel sheets are insulating each other, can reduce the area of overflowing, further reduce and generate heat.
Further, the thickness T of the stator core satisfies: t is more than or equal to 70mm and less than or equal to 160 mm.
In this embodiment, the thickness of the stator core 110 is further limited, that is, the size range of the motor 100 is further limited, that is, the size value of the stator core 110 can further ensure the number of the stator slots 112, and further, the number of the stator slots 112 is limited, so that the noise in the application field of the high-power compressor can be improved, and the output capacity of the motor 100 can be improved. Through the further restriction to this size range motor 100's rotor external diameter and stator external diameter ratio, can improve the output capacity of motor 100 and the efficiency of motor 100 on the basis of improving motor 100 noise, and then satisfy high-power compressor's operation requirement.
Example four
On the basis of any of the above embodiments, as shown in fig. 1, further, the stator core 110 further includes stator teeth 114 disposed between two adjacent stator slots 112 in the plurality of stator slots 112, a width of the stator teeth 114 is d, and an outer diameter of the rotor core 130 and a width of the stator teeth 114 satisfy:
in this embodiment, stator teeth 114 are disposed between two adjacent stator slots 112 in the plurality of stator slots 112, wherein the number of the stator teeth 114 is the same as the number of the stator slots 112, and is defined by the relationship between the width of the stator teeth 114, the outer diameter of the rotor, the number of poles of the motor 100 and the stator slots 112, that is, under the condition that the number 36 of the stator slots 112 is not less than Z not more than 48 and the number of poles of the motor 100 is 6 to 8 slot poles, the range of the magnetic force generated by the motor can be further defined by further defining the width of the stator teeth 114 and the outer diameter of the rotor. Specifically, if the magnetic force generated by the motor 100 is too small, the power density of the motor 100 is insufficient, that is, the output capacity of the motor 100 is insufficient, the motor 100 is likely to be stopped or the motor 100 is likely to be burned, and materials are wasted, and if the magnetic force generated by the motor 100 is too large, that is, the magnetic force of the motor 100 is supersaturated, on the one hand, a large magnetic force cannot be reflected, and on the other hand, a reaction may occur, that is, a noise problem is likely to occur. For the motor with the number of stator slots 112 being equal to or greater than 36 and equal to or less than 48 and the number of poles of the motor 100 being equal to or greater than 6 and 8, the magnetic force generated by the motor 100 is limited by limiting the width of the stator teeth and the size of the outer diameter of the rotor, so that the output capacity and the noise of the motor 100 can be ensured to be at the optimal level on the basis of improving the noise of the motor 100.
For example, the conventional motor 100 can output 30KW, and the motor 100 can output 40KW by the above-described limitation of the size of the motor 100.
EXAMPLE five
On the basis of any of the above embodiments, as shown in fig. 1, further, the motor 100 further includes a stator winding 120 disposed on the stator teeth 114, wherein the stator winding 120 is disposed on the stator teeth 114 in a winding or embedding manner.
In this embodiment, the motor 100 further includes a stator winding 120, and the stator winding 120 is disposed on the stator teeth 114, wherein the stator winding 120 is disposed on the stator teeth 114 in a winding or embedding manner, that is, the disposition position of the stator winding 120 is defined, and the stator winding 120 is disposed on the stator teeth 114 in the winding or embedding manner, so that the stator winding 120 can be disposed in the stator core 110 more stably, and further, the operation stability of the motor 100 is improved.
It should be noted that the stator winding may include a plurality of coils, and the arrangement is specifically performed according to actual needs.
EXAMPLE six
In addition to any of the embodiments described above, as shown in fig. 1, the inner diameter of rotor core 130 is d2, and the outer diameter of rotor core 130 and the inner diameter of rotor core 130 satisfy:
in this embodiment, the range of the ratio of the outer diameter to the inner diameter of rotor core 130 is used to define the power of motor 100. Specifically, a shaft hole is formed in the middle of the rotor core 130, the shaft of the motor 100 passes through the shaft hole to be matched with the rotor core 130, if the shaft hole of the conventional motor 100 is smaller, the shaft of the motor 100 matched with the shaft hole is smaller, and then the output power of the motor 100 is smaller, and if the shaft hole of the motor 100 is larger, the shaft of the motor 100 matched with the shaft hole is larger, and then the output power of the motor 100 is larger. The output power of the motor 100 is limited by limiting the value range of the ratio of the outer diameter to the inner diameter of the rotor core 130, so that the motor 100 can meet the application occasions of high power.
It should be noted that the rotor includes a rotor core 130 and a permanent magnet, the rotor core 130 is formed by punching a plurality of rotor sheets according to a specified shape, and the rotor sheets may be silicon steel sheets. Particularly, the rotor punching sheet can be the silicon steel sheet, and the silicon steel sheet can reduce eddy current loss and hysteresis loss, and then reduces the iron core and generate heat, and a plurality of silicon steel sheets are insulating each other, can reduce the area of overflowing, further reduce and generate heat.
Each rotor punching sheet is provided with a plurality of magnet grooves along the circumferential direction, the magnet grooves are uniformly distributed along the circumferential direction of the rotor punching sheet, the magnet grooves of the rotor core 130 are communicated along the axial direction of the rotor core 130 to form slots, the permanent magnets are inserted into the slots, specifically, the magnetism of the permanent magnets inserted into the two adjacent slots is opposite, namely, one slot is inserted into the N pole, and one slot is inserted into the S pole, so that the magnetic poles with the polarity alternately changed along the circumferential direction of the rotor core 130 are formed.
Here, the number of poles of the motor defined in the present application is 6 to 8, as shown in fig. 1, that is, the motor structure with the number of poles being 8, specifically, since the magnetic properties of the permanent magnets inserted into the two adjacent slots are opposite, for the motor structure with 8 poles, there are 4N poles and 4S poles, wherein the N poles and the S poles are alternately inserted into the slots, thereby forming magnetic poles with alternating polarities in the circumferential direction of the rotor core 130.
In a specific embodiment, further, the stator core 110 includes a body, and a plurality of stator slots 112 are spaced apart along a circumferential direction of the body.
In this embodiment, the stator core 110 includes a body and a plurality of stator slots 112, wherein the stator slots 112 are distributed at intervals along the circumferential direction of the body, the number of the stator slots defined in the present application is 36 ≦ Z ≦ 48, and the magnetic field of the motor 100 can be made more uniform by providing a plurality of stator slots respectively spaced at intervals along the circumferential direction of the body. It should be noted that, the plurality of stator slots 112 may be distributed at equal intervals, however, the plurality of stator slots 112 are ideally distributed at equal intervals, and it can be understood that there may be a certain error range in the intervals between adjacent stator slots 112, which has no influence on the magnetic field uniformity of the motor 100.
EXAMPLE seven
According to a second aspect of the present invention, there is provided a compressor including the motor 100 provided in any one of the above embodiments.
The utility model provides a compressor, including any one of the above-mentioned embodiments motor 100, consequently have all beneficial effects of this motor 100, no longer describe herein.
As shown in fig. 6, further, the compressor further includes a housing configured to have a structure of a cavity in which the motor 100 is disposed, and an outlet having one end connected to the stator winding and the other end connected to an external power source through a terminal box to supply power to the motor. Wherein, the terminal box includes a plurality of terminals and a plurality of binding post, wherein, two binding post correspond a terminal, specifically, two binding post weld respectively to the one end of terminal, the other end of terminal is connected to the external unit through the wiring unit, the lead-out wire of motor can be at least two to can shunt through many lead-out wires, can reduce the line warp of lead-out wire, and reduce the hardness and the stress of lead-out wire, improve the stability of motor, every lead-out wire in many lead-out wires is connected to binding post respectively, thereby form complete return circuit.
For the application occasion of the high-power compressor, because the rotating speed of the motor 100 is high, the noise of the compressor is also high, by increasing the number of the stator slots 112, the magnetic field distribution of the motor 100 is more uniform, and further, the generation of harmonics is less, and the influence of the noise can be effectively reduced, however, if the number of the stator slots 112 is designed to be too large, the manufacturing difficulty is increased, therefore, the application designs the stator and rotor structure of the motor 100 matched with the slot poles, namely, the outer diameter of the stator core 110 and the outer diameter of the rotor core 130 are controlled within a certain size range, the noise can be improved, meanwhile, the output capacity of the motor 100 can be improved, the energy efficiency of the motor 100 can be improved, and the motor 100 with the structure can meet the requirements of the high-power compressor. Meanwhile, for the coils with the same length, because the number of the stator slots 112 is limited in a larger range, the coil end portions of the coils wound by the stator winding 120 can be located at a relatively lower position in the axial direction of the stator core 110, that is, the coil end portions of the coils wound in the stator core 110 with the larger number of the stator slots 112 are located at a lower position in the axial direction of the stator core 110 than the position of the coil end portions wound in the stator core 110 with the smaller number of the stator slots 112, so that the loss of the coil end portions of the stator winding 120 can be reduced, and the energy efficiency of the motor 100 can be further improved.
Example eight
According to a third aspect of the present invention, there is provided a refrigeration apparatus comprising the compressor provided in any one of the above embodiments.
The utility model provides a refrigeration plant, including above-mentioned arbitrary embodiment the compressor, consequently have whole beneficial effect of this compressor, no longer describe here.
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 for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "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 (10)
1. An electric machine, characterized in that the electric machine comprises:
the stator core is provided with an inner cavity and comprises a plurality of stator slots, the number of the stator slots is Z, and the outer diameter of the stator core is D1;
the rotor core is arranged in the inner cavity, and the outer diameter of the rotor core is D2;
the number P of poles of the motor is more than or equal to 6 and less than or equal to 8, the number Z of the stator slots is more than or equal to 36 and less than or equal to 48, and the outer diameter D1 of the stator core and the outer diameter D2 of the rotor core meet
2. The electric machine of claim 1,
the outer diameter D1 of the stator core satisfies: d1 is more than or equal to 145mm and less than or equal to 250 mm.
3. The electric machine of claim 1,
the thickness of the stator core is T,
wherein an outer diameter D1 of the stator core and a thickness T of the stator core satisfy
4. The electric machine of claim 3,
the thickness T of the stator core satisfies: t is more than or equal to 70mm and less than or equal to 160 mm.
5. The electric machine of any of claims 1-4, wherein the stator core further comprises:
stator teeth arranged between two adjacent stator slots of the plurality of stator slots, the width of the stator teeth being d, the outer diameter of the rotor core and the width of the stator teeth satisfying:
6. the electric machine of claim 5, further comprising:
a stator winding disposed on the stator teeth,
the stator winding is arranged on the stator teeth in a winding or embedding mode.
7. The electric machine according to any of claims 1 to 4,
the inner diameter of the rotor core is d2, and the outer diameter of the rotor core and the inner diameter of the rotor core meet the following requirements:
8. the electric machine according to any one of claims 1 to 4, wherein the stator core comprises:
the body, a plurality of stator grooves are along the interval distribution in the circumferential direction of body.
9. A compressor, comprising:
a housing having a cavity;
an electric machine as claimed in any of claims 1 to 8, disposed within the cavity.
10. A refrigeration apparatus, characterized by comprising a compressor according to claim 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022188662.XU CN212304904U (en) | 2020-09-29 | 2020-09-29 | Motor, compressor and refrigeration plant |
| PCT/CN2020/134781 WO2022068052A1 (en) | 2020-09-29 | 2020-12-09 | Electric motor, compressor and refrigeration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022188662.XU CN212304904U (en) | 2020-09-29 | 2020-09-29 | Motor, compressor and refrigeration plant |
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| Publication Number | Publication Date |
|---|---|
| CN212304904U true CN212304904U (en) | 2021-01-05 |
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| CN202022188662.XU Active CN212304904U (en) | 2020-09-29 | 2020-09-29 | Motor, compressor and refrigeration plant |
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| CN (1) | CN212304904U (en) |
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