CN212435443U - Motor and compressor with same - Google Patents
Motor and compressor with same Download PDFInfo
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- CN212435443U CN212435443U CN202020813050.2U CN202020813050U CN212435443U CN 212435443 U CN212435443 U CN 212435443U CN 202020813050 U CN202020813050 U CN 202020813050U CN 212435443 U CN212435443 U CN 212435443U
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Abstract
The utility model provides a motor and have its compressor. The motor comprises a stator core, wherein the stator core comprises a stator yoke and a plurality of stator teeth, the plurality of stator teeth are arranged at intervals along the inner circumferential surface of the stator yoke, and a stator slot is formed between every two adjacent stator teeth; the area of the cross section of the stator core along the radial direction of the stator core is M, the area of the cross section of the stator yoke along the radial direction of the stator core is B, and B/M is more than or equal to 0.9 and more than or equal to 0.25. Through the reasonable cross section proportion that sets up stator core and stator yoke, especially reasonable with the width restriction of stator yoke in certain width range, can reduce the thickness of stator yoke portion, increase slot area reduces the motor loss, promotes motor efficiency, promotes the compressor efficiency that has this motor, has guaranteed motor stator's rigidity again simultaneously to keep the motor efficient, reduces motor vibration noise, reduces the complete machine noise of compressor then.
Description
Technical Field
The utility model relates to a compressor equipment technical field particularly, relates to a motor and have its compressor.
Background
Environmental protection and energy conservation are important concerns for social sustainable development. Along with the improvement of the quality of life, the popularity of the refrigeration air conditioner is increased, the power consumption of the refrigeration air conditioner accounts for 20% of the annual power consumption in the whole country according to statistics, and the compressor is used as an important component of the refrigeration air conditioner, the power consumption proportion is the largest, so that the reduction of the loss of the motor in the compressor and the improvement of the efficiency become key problems.
The problem of air conditioner noise is one of the most direct performance experiences, the compressor noise of an air conditioner external unit and the vibration noise of a shell caused by the vibration of the air conditioner external unit are main sources of outdoor noise, and the problems of electromagnetic vibration and noise of a compressor motor also become main concerns in the refrigeration and air conditioning industry. Besides directly influencing the experience performance of the air conditioner, the vibration and the noise of the compressor also influence the overall performance of the air conditioner, such as service life and operational reliability.
As the core component of the compressor, the efficiency and noise problem of the motor directly affect the overall performance of the compressor, the efficiency and noise problem of the motor are mutually restricted, in order to meet the energy-saving requirement, the higher the motor efficiency is, the better the motor efficiency is, in order to improve the user experience, the lower the noise of the motor is, the better the motor efficiency is, but the motor efficiency is improved, a larger groove area is needed, the width of a stator tooth of the motor can be narrowed, the thickness of a stator yoke is thinned, the rigidity of the stator is reduced, the motor vibration is large, the noise is large, the compressor vibration is large, the noise is large, if the rigidity of the motor is improved in order to reduce the motor noise, the width of the stator tooth yoke needs to be increased, but. In the prior art, the stator tooth yoke is not changed, only the winding is changed, the insulation characteristic is improved, and the efficiency and the noise of the compressor cannot be improved. Still be with motor housing insulating material of moulding plastics, adopt special motor housing protection mode, improve insulating characteristic, set up like this and can not improve compressor efficiency and compressor noise. The motor adopts a winding paint dipping technology to bond loose windings together, which can only improve the tightness of the windings, can not improve the structural rigidity of the stator, can not solve the noise caused by poor structural rigidity of the compressor, and can not improve the efficiency of the compressor.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a motor and have its compressor to solve the big problem of motor noise among the prior art.
In order to achieve the above object, according to an aspect of the present invention, there is provided a motor including: the stator core comprises a stator yoke and a plurality of stator teeth, the plurality of stator teeth are arranged at intervals along the inner circumferential surface of the stator yoke, and a stator slot is formed between every two adjacent stator teeth; the area of the cross section of the stator core along the radial direction of the stator core is M, the area of the cross section of the stator yoke along the radial direction of the stator core is B, and B/M is more than or equal to 0.9 and more than or equal to 0.25.
Further, the motor further includes: windings wound on the stator teeth, adjacent windings being arranged with a distance; the reinforcing member is arranged between adjacent windings, the cross section area of all the reinforcing members arranged between the adjacent windings is A, and the unit is mm2Wherein, A/B is more than or equal to 0.5 and more than or equal to 0.03.
Further, (A x L)/(K x 10) is more than or equal to 5, wherein K is the displacement of the pump body of the compressor and the unit is cc; l is the compressor match.
Furthermore, the reinforcing member is located the stator inslot, and the reinforcing member sets up with winding phase laminating ground, perhaps, the reinforcing member all sets up with insulating object, winding phase laminating ground that set up in the stator inslot.
Further, the area of the cross section of the stator tooth along the radial direction of the stator core is C, wherein 0.4A/C is more than or equal to 0.05.
Further, the end portion of the reinforcement member on the side facing the geometric center of the stator core is disposed at a distance from the inner circular molded line of the stator core.
Furthermore, the reinforcing member is made of non-magnetic, high-temperature resistant, refrigerant corrosion resistant and insulating materials.
Furthermore, an included angle formed by the connection part of the slot bottom and the slot wall of the stator slot is an acute angle or an obtuse angle, or an arc transition section is arranged at the connection part of the slot bottom and the slot wall of the stator slot, and the radius of the arc transition section is D, wherein D is less than or equal to 1 mm.
Further, the reinforcement wraps up in the tip of winding, and the reinforcement is filled in the gap between the tip of insulating skeleton and winding, and the axial height of the reinforcement along stator core is less than the height of insulating skeleton terminal surface along stator core's axial direction.
Furthermore, the reinforcing member is arranged in the stator slot, one side of the reinforcing member, which is close to the slot bottom of the stator slot, is arranged and is attached to the stator yoke, and a refrigerant overflowing space is formed between one side of the reinforcing member, which is close to the geometric center of the stator core, and the notch of the stator slot.
Furthermore, the cross section area of all the flow passing spaces in the radial direction of the stator core is E, wherein E/A is more than or equal to 1.3 and more than or equal to 0.6.
Furthermore, the reinforcing member is arranged in the stator slot, the end part molded line of the reinforcing member facing one side of the geometric center of the stator core is coincided with the inner circle molded line of the stator core, the middle part of the reinforcing member is provided with a refrigerant through hole, and the refrigerant through hole is arranged in a penetrating manner along the axial direction of the stator core.
Furthermore, the refrigerant through holes are multiple and are arranged at intervals.
Furthermore, the sum of the areas of the cross sections of all the refrigerant through holes is F, wherein F/A is more than or equal to 1.2 and more than or equal to 0.7.
Furthermore, the cross section of the refrigerant through hole is circular, oval, rectangular or regular polygon.
According to another aspect of the present invention, there is provided a compressor, which includes a motor, wherein the motor is the above-mentioned motor.
Use the technical scheme of the utility model, through the reasonable cross section proportion that sets up stator core and stator yoke, especially reasonable with the width restriction of stator yoke in certain width within range, can reduce the thickness of stator yoke portion, increase groove area reduces the motor loss, promotes motor efficiency, promotes the compressor efficiency that has this motor, keeps the motor efficient rigidity of having guaranteed motor stator again simultaneously, reduces motor vibration noise, reduces the complete machine noise of compressor then.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic structural view of a first embodiment of an electric machine according to the invention;
fig. 2 shows a schematic structural view of a second embodiment of an electric machine according to the invention;
fig. 3 shows a schematic structural view of a third embodiment of an electric machine according to the invention;
fig. 4 shows a schematic structural view of a fourth embodiment of an electric machine according to the invention;
fig. 5 shows a schematic structural view of a fifth embodiment of an electric machine according to the invention;
fig. 6 shows a schematic structural view of a sixth embodiment of an electric machine according to the invention;
fig. 7 shows a schematic structural view of a seventh embodiment of an electric machine according to the invention;
fig. 8 shows a schematic structural view of an eighth embodiment of an electric machine according to the invention;
fig. 9 shows a schematic structural view of a ninth embodiment of the electrical machine according to the invention;
fig. 10 shows a schematic structural view of a tenth embodiment of an electric machine according to the invention;
fig. 11 shows a schematic structural view of an eleventh embodiment of an electric machine according to the invention;
figure 12 shows a schematic cross-sectional structural view of an embodiment of a stator core of an electrical machine according to the invention;
figure 13 shows a schematic diagram of the motor efficiency comparison with the prior art according to the present invention;
figure 14 shows a schematic diagram of the efficiency of a compressor according to the present invention compared to the efficiency of a compressor of the prior art;
figure 15 shows a schematic diagram of the noise contrast of a compressor according to the present invention with a compressor of the prior art;
fig. 16 shows a schematic structural view of an embodiment of a compressor according to the present invention.
Wherein the figures include the following reference numerals:
10. a stator yoke; 11. a stator circulation groove;
20. stator teeth; 21. a stator slot;
30. a winding;
40. a reinforcement; 41. a refrigerant through hole;
50. an overflow space;
60. a housing; 61. insulating paper;
80. a limiting column; 81. and (4) coating the insulating material.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.
Referring to fig. 1 to 16, according to an embodiment of the present application, there is provided a motor.
Specifically, as shown in fig. 1, the motor includes a stator core. The stator core comprises a stator yoke 10 and a plurality of stator teeth 20, the plurality of stator teeth 20 are arranged at intervals along the inner circumferential surface of the stator yoke 10, and stator slots 21 are formed between the adjacent stator teeth 20; the area of the cross section of the stator core along the radial direction of the stator core is M, the area of the cross section of the stator yoke 10 along the radial direction of the stator core is B, and B/M is more than or equal to 0.9 and more than or equal to 0.25.
In this embodiment, through the reasonable cross section proportion that sets up stator core and stator yoke 10, especially reasonable with the width restriction of stator yoke 10 in certain width range, can reduce the thickness of stator yoke portion, increase groove area, reduce the motor loss, promote motor efficiency, promote the compressor efficiency that has this motor, guaranteed motor stator's rigidity again when keeping the motor efficient, reduce motor vibration noise, reduce the complete machine noise of compressor then.
Wherein the machine further comprises windings 30. The windings 30 are wound on the stator teeth 20, and the adjacent windings 30 are arranged with a distance; the reinforcing members 40 are arranged between the adjacent windings 30, the cross section area of all the reinforcing members 40 arranged between the adjacent windings 30 is A, the unit is mm2, and 0.5 is more than or equal to A/B is more than or equal to 0.03. And (A x L)/(K x 10) is not less than 5, wherein K is the displacement of the pump body of the compressor and is in the unit of cc, and L is the screw number of the compressor. The motor stator structure can reduce the thickness of the yoke of the stator, increase the groove area, reduce the loss of the motor, improve the efficiency of the motor, improve the energy efficiency of the compressor with the motor, keep the efficient of the motor, ensure the rigidity of the motor stator, reduce the vibration noise of the motor, and then reduce the noise of the whole compressor.
According to one embodiment of the present application, the reinforcing members 40 are located in the stator slots 21, and the reinforcing members 40 are disposed in close proximity to the windings 30, or the reinforcing members 40 are disposed in close proximity to the windings 30, the insulation disposed in the stator slots 21. This arrangement can improve the stability of the winding.
The area of the cross section of the stator tooth 20 along the radial direction of the stator core is C, wherein 0.4A/C is more than or equal to 0.05. That is, as shown in fig. 12, the cross-sectional area in fig. 12 is C, which makes it possible to minimize the material used for the stator yoke 10 and optimize the performance of the motor.
As shown in fig. 5, the end of the reinforcing member 40 on the side facing the geometric center of the stator core is disposed at a distance from the inner circular line of the stator core. As shown at C in fig. 5, i.e. the reinforcement 40 does not completely fill the slot opening of the stator slot 21. This arrangement can serve the purpose of improving the stability of the winding.
Preferably, the reinforcement 40 is made of a non-magnetically permeable, high temperature resistant, coolant resistant, insulative material. For example, the reinforcement 40 may be an epoxy. This arrangement can improve the life of reinforcement 40, can improve the reliability and the stability of motor then effectively.
As shown in fig. 7E and W, the angle formed by the connection between the bottom of the stator slot 21 and the slot wall is acute or obtuse. Or, as shown in fig. 6, an arc transition section is arranged at the connection part of the slot bottom and the slot wall of the stator slot 21, and the radius of the arc transition section is D, wherein D is less than or equal to 1 mm. This arrangement can improve motor performance.
As shown in fig. 1, 2, 6, 7, 8, 10, and 11, the reinforcing member 40 is wrapped around the end of the winding 30, the reinforcing member 40 is filled in the gap between the insulating frame and the end of the winding 30, and the axial height of the reinforcing member 40 along the stator core is lower than the height of the end face of the insulating frame along the axial direction of the stator core, that is, the height of the reinforcing member 40 along the vertical direction is lower than the height of the insulating frame along the vertical direction at the same reference point. As shown at D in fig. 4, i.e., the gap between the ends of the winding 30. This arrangement can improve the stability of the motor, wherein the spacing posts 80 can be provided at the notches of the stator slots 21 to further improve the reliability of the motor.
According to another embodiment of the present application, as shown in fig. 9, the reinforcing member 40 is disposed in the stator slot 21, the reinforcing member 40 is disposed near one side of the slot bottom of the stator slot 21 and attached to the stator yoke 10, and a refrigerant flowing space 50 is formed between one side of the reinforcing member 40 near the geometric center of the stator core and the slot opening of the stator slot 21. This arrangement can reduce the amount of reinforcement 40 used, while maintaining the stability of the motor winding installation.
Furthermore, the cross section area of all the flow passing spaces 50 in the radial direction of the stator core is E, wherein E/A is more than or equal to 1.3 and more than or equal to 0.6. The "cross section" referred to in the present application is a cross section in the radial direction of the stator core. This arrangement can further improve the efficiency of the motor.
As shown in fig. 6 to 8, the reinforcing member 40 is disposed in the stator slot 21, the end profile of the reinforcing member 40 facing the geometric center of the stator core is disposed to coincide with the inner circular profile of the stator core, the middle portion of the reinforcing member 40 is provided with a refrigerant through hole 41, and the refrigerant through hole 41 is disposed to penetrate through the stator core in the axial direction. The arrangement can also play a role in improving the efficiency of the motor.
As shown in fig. 10, there is one refrigerant passage hole 41. As shown in fig. 11, two refrigerant through holes 41 are provided, and the two refrigerant through holes 41 are spaced apart from each other. The arrangement enables the refrigerant to smoothly flow from one end of the motor to the other end of the motor, and improves the smoothness of the refrigerant flow. The sum of the areas of the cross sections of all the refrigerant through holes 41 is F, wherein F/A is more than or equal to 1.2 and more than or equal to 0.7. The cross section of the refrigerant through hole 41 is circular, oval, rectangular or regular polygonal.
The motor in the above-mentioned embodiment can also be used for compressor equipment technical field, promptly according to the utility model discloses a further aspect provides a compressor, and this compressor includes the motor, and the motor is the motor in the above-mentioned embodiment.
Specifically, adopt the motor of this application, solved the big problem of low efficiency of motor loss, can solve the problem that the compressor efficiency that has this motor is low simultaneously, reasonable structure that sets up stator core has solved the problem that motor rigidity is low. The motor can solve the problem that the motor and the compressor vibrate greatly and have large noise.
Because gapped between the winding on the adjacent tooth in compressor motor stator inslot, add the reinforcement in this clearance, the reinforcement directly laminates with stator yoke portion or separates the laminating of groove insulation and stator yoke, and the shared area of reinforcement is A in the radial cross-section of stator, and the shared area of stator yoke portion is B in the radial cross-section of stator, and A and B should satisfy following relation: 0.5 is more than or equal to A/B is more than or equal to 0.03, the motor is a high-efficiency low-noise motor, the thickness of a yoke part of a stator is reduced, the groove area is increased, the motor loss is reduced, the motor efficiency is improved, the compressor energy efficiency is improved, the high efficiency is kept, meanwhile, a reinforcing member tightly attached to the yoke part is additionally arranged, the stator rigidity is improved, the motor vibration noise is reduced, and the overall noise of the compressor is reduced.
Specifically, the compressor includes a motor (shown as a in fig. 16), a pump body assembly, a housing, and a dispenser. The motor stator includes: the stator comprises a stator iron core, an insulating framework and a winding; the stator core is provided with a stator core yoke, N stator teeth and N stator slots, and the winding is wound on the stator teeth. And a gap is reserved between the windings on adjacent teeth in the stator slot, a reinforcing member is additionally arranged in the gap, and the reinforcing member is directly attached to the yoke part of the stator or attached to the yoke part of the stator through slot insulation. Stator yoke portion and compressor housing contact, and the shared area of stator yoke portion in the radial cross-section of stator is B, and stator core's area is M, and B should satisfy following relation with M: B/M is more than or equal to 0.9 and more than or equal to 0.25. The area that the reinforcement occupies in stator radial cross section is A, and the area that stator yoke portion occupies in stator radial cross section is B, and A should satisfy the following relation with B: A/B is more than or equal to 0.03 and more than or equal to 0.5. The reinforcement is the part that can promote the motor bulk rigidity, can have certain quality parts for rigid material part, injection molding, colloidal part etc.. The side of the reinforcing member close to the center of the stator is the inner side, the side close to the excircle of the stator is the outer side, the reinforcing member is used as a core component of the compressor, the efficiency and noise problems of the motor directly influence the whole performance of the compressor, the efficiency and noise problems of the motor are mutually restricted, in order to meet the energy-saving requirement, the higher the motor efficiency is, the better the noise of the motor is, in order to improve the user experience, the lower the noise of the motor is, but the motor efficiency is improved, a larger groove area is needed, the width of a stator tooth of the motor is narrowed, the thickness of a stator yoke is thinned, the rigidity of the stator is reduced, the motor vibration is large, the noise is large, the vibration of the compressor is large, if the noise of the motor is reduced, the rigidity of the motor is improved, the width of the stator tooth yoke is needed to be increased, but the motor efficiency is reduced, so the, the area of the stator core is M, and B and M should satisfy the following relation: when B/M is more than or equal to 0.9 and more than or equal to 0.25, a reinforcing member is additionally arranged in a gap between windings on adjacent teeth in a stator slot, the reinforcing member is directly attached to a stator yoke portion or attached to the stator yoke portion through slot insulation, the rigidity of the stator is improved, the vibration noise of the motor is reduced, when A/B is more than or equal to 0.5 and more than or equal to 0.03, the thickness of the yoke portion is smaller, more windings can be accommodated, the efficiency of the motor is improved, the rigidity of the motor is improved by using the reinforcing member, the vibration noise of the motor is reduced.
The area of the reinforcing member in the radial section of the stator is A, and the unit is mm2Calculating that the displacement of a pump body of the compressor is K, the unit is calculated in cc, the matching number of the compressor is L, and A, K and L satisfy the following relation: (A x L)/(K x 10) is not less than 5. Within this range, the vibration of the stator casing can be reduced while the energy efficiency of each number of compressors is further taken into consideration, and the noise of each number of compressors can be reduced.
The reinforcement is located the stator slot, and the reinforcement is located between stator tooth winding and the tooth winding promptly, and the reinforcement edge is laminated with the tooth winding edge mutually, further increases the quantity of reinforcement, and the stator winding of laminating simultaneously improves motor global rigidity, and the shared area of reinforcement is A in stator radial cross section, and the shared area of stator tooth is C in stator radial cross section, and A and C should satisfy following relation: 0.4 is more than or equal to A/C more than or equal to 0.05, the width of the tooth part is smaller, more windings can be accommodated, the motor efficiency is improved, meanwhile, the rigidity of the motor is improved by using the reinforcing part, the vibration noise of the motor is reduced, and the vibration noise of the compressor is reduced.
In another embodiment of this application, the inward flange of reinforcement does not exceed stator core internal diameter, and the reinforcement is fixed always on the stator, and when the motor operation, the rotor is high-speed rotatory, for preventing to appear sweeping the reliability that the thorax problem influences motor and compressor, need not make the inward flange of reinforcement not exceed the stator internal diameter.
The reinforcement material is for not leading magnetic, and the reinforcement can influence the magnetic circuit if leading magnetic in the stator slot, and the reinforcement is cold-resistant media to corrode, has the refrigerant to flow in the compressor, if not cold-resistant media can be corroded and produce impurity, reduces the reliability of compressor, and the reinforcement is high temperature resistant, and insulating nature is good, and the compressor high-speed operation, motor temperature rise, and the interior circular telegram of winding on the tooth simultaneously can further improve motor insulation reliability like this.
The stator slot bottom and the stator tooth have no transition fillets, or the radius D of the transition fillets is less than or equal to 1mm, the stator slot insulation adopts coating insulation material 81, the insulation material is coated in the stator slot, the insulation material can completely cover the slot bottom corners, the thickness I of the insulation material coating is less than or equal to 0.5mm, the traditional motor slot insulation adopts insulation paper 61, the hardness of the insulation paper is high, the slot bottom corners are not easy to bend, the transition fillets of the motor slot bottom corners are large, at least the radius is about 2.5, the slot bottom corner windings cannot wind, the slot filling rate is reduced, the motor efficiency is reduced, or the slot bottom corners of the traditional motor iron core are also provided with transition fillets, the radius of the transition fillets is about 2.5, the number of turns in the slot windings is also reduced, the motor efficiency is reduced, when the slot insulation adopts coating insulation material, the insulation material is coated in the stator slot, the insulation material can completely cover the slot bottom corners, the slot filling rate is improved, the number of windings in the groove is increased, the running current of the motor is reduced, the copper consumption of the motor is reduced, the motor efficiency is increased by about 1.5%, and the energy efficiency of the compressor is improved.
The insulating skeleton of matching stator does not have spacing groove insulating paper's spacing post, traditional motor groove is insulating to adopt insulating paper, the spacing post of insulating paper of event insulating skeleton needs groove, be used for fixed insulating paper, change the insulating coating insulating material that uses in groove, the event insulating skeleton does not need spacing post, spacing post need be dodged during the wire winding of groove, the event has reduced the groove fullness rate, under the condition that can guarantee that the motor is insulating good when getting rid of spacing post, increase the inslot winding quantity, promote the groove fullness rate, reduce motor copper consumption, promote motor efficiency, improve the compressor efficiency, the compressor efficiency promotes about 7% on average, more practice thrift the electric energy.
Reinforcing member parcel winding overhang, the reinforcing member is filled up insulating skeleton and winding overhang gap, improves the fastening nature of winding, and the reinforcing member of tip further improves the rigidity of motor simultaneously, reduces motor vibration noise, reduces the noise that compressor mechanical oscillation arouses, improves compressor reliability, and the reinforcing member axial does not surpass insulating skeleton terminal surface, and the axial can bring the reinforcing member use amount too much if surpassing insulating skeleton terminal surface, and material cost increases, complete machine cost increase, and the compressor price/performance ratio descends.
The reinforcement sets up at the stator tank bottom, reinforcement outside laminating stator yoke, leave refrigerant circulation space between reinforcement inboard and the stator internal diameter, this space axial runs through the stator, this space is close to the rotor side, this space is as the route from pump body gas vent exhaust refrigerant, reduce the aerodynamic noise in the compressor, reduce the aerodynamic noise of compressor when improving motor rigidity and reduce compressor mechanical vibration noise, reduce the synthetic noise of compressor complete machine, this space shared area is E in stator radial cross section, the shared area of reinforcement is A in stator radial cross section, E and A should satisfy following relation: when the E/A is more than or equal to 1.3 and more than or equal to 0.6, the rigidity of the motor is improved by using the reinforcing member, the vibration noise is reduced, meanwhile, a refrigerant passage is reserved, the pneumatic noise can be further reduced, when the E/A is more than or equal to 1.3, the vibration noise reduction effect caused by rigidity increase is better, the pneumatic noise reduction effect is better, and the noise reduction effect of the whole compressor is better.
The reinforcing member outside laminating stator yoke, the inboard laminating stator internal diameter of reinforcing member, reserve refrigerant circulation space on the reinforcing member, refrigerant circulation space is located stator slot middle part, and this space shared area is F in stator radial cross section, and the reinforcing member shared area is A in stator radial cross section, and F and A should satisfy following relation: the F/A is more than or equal to 1.2 and more than or equal to 0.7, the length of the reinforcing piece in the radial direction of the motor can be increased under the condition of ensuring an enough refrigerant flow path, the rigidity of the motor is further improved, the vibration noise of the motor is reduced, and the vibration noise of the compressor is reduced.
The reinforcement outside laminating stator yoke, the inboard laminating stator internal diameter of reinforcement, reserve a plurality of refrigerant circulation spaces on the reinforcement, a plurality of refrigerant circulation spaces evenly arrange along stator radial direction on, a plurality of refrigerant circulation space areas are G, and the shared area of reinforcement in stator radial cross-section is A, and G and A should satisfy following relation: the G/A is more than or equal to 1.2 and more than or equal to 0.7, and the refrigerant circulation passages are uniformly distributed in the circumferential direction due to the plurality of refrigerant circulation spaces, so that the pneumatic noise is reduced more uniformly due to uniform distribution, the pneumatic noise is lower, the noise of the whole compressor is lower, and the noise of the compressor is reduced by about 5dB on average.
The shape of the refrigerant space reserved by the reinforcing member in the stator slot is circular, the circulation space is circular, the largest circulation area can be achieved in a smaller space, the pneumatic noise reduction effect is optimal in the smaller space, the noise reduction effect of the whole compressor is optimal, and the whole compressor can also be polygonal or in other shapes. As shown in fig. 3, B is the geometric center line of the stator teeth, a is the geometric center line of the stator slots, and the edge of the stator core is provided with the stator circulation slots 11. Here, the "new motor" in fig. 13 to 15 refers to the motor structure provided in the present application.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition to the foregoing, it should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally throughout this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
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 (16)
1. An electric machine, comprising:
the stator core comprises a stator yoke (10) and a plurality of stator teeth (20), the plurality of stator teeth (20) are arranged at intervals along the inner circumferential surface of the stator yoke (10), and stator slots (21) are formed between the adjacent stator teeth (20);
the stator yoke (10) is characterized in that the area of a cross section of the stator core along the radial direction of the stator core is M, the area of a cross section of the stator yoke (10) along the radial direction of the stator core is B, and B/M is more than or equal to 0.9 and more than or equal to 0.25.
2. The electric machine of claim 1, further comprising:
-windings (30), said windings (30) being wound on said stator teeth (20), adjacent windings (30) being arranged with a distance;
the coil comprises reinforcing members (40), the reinforcing members (40) are arranged between the adjacent windings (30), and the cross section area of all the reinforcing members (40) arranged between the adjacent windings (30) is A and the unit is mm2Which isIn the formula, A/B is more than or equal to 0.5 and more than or equal to 0.03.
3. The machine according to claim 1 or 2, characterized in that (A x L)/(K x 10) ≧ 5, wherein,
k is the displacement of the pump body of the compressor, and the unit is cc;
l is the compressor's number of windings, and A is the cross-sectional area of all of the stiffeners (40) disposed between adjacent windings (30).
4. An electric machine according to claim 2, characterized in that the reinforcement (40) is located in the stator slot (21), the reinforcement (40) being arranged in abutment with the winding (30), or in that the reinforcements (40) are each arranged in abutment with an insulating object arranged in the stator slot (21), the winding (30).
5. An electric machine according to claim 1 or 4, characterized in that the cross-sectional area of all stator teeth (20) on the stator core in the radial direction of the stator core is C, where 0.4. gtoreq.A/C. gtoreq.0.05, A being the cross-sectional area of all stiffeners (40) provided between adjacent windings (30).
6. An electric machine according to claim 4, characterized in that the end of the reinforcement (40) on the side facing the geometric centre of the stator core is arranged at a distance from the inner circular profile of the stator core.
7. An electric machine according to claim 2, characterized in that the reinforcement (40) is made of a non-magnetically conductive, high temperature resistant, coolant resistant, insulating material.
8. The electric machine of claim 1,
the included angle formed by the connection part of the slot bottom of the stator slot (21) and the slot wall is an acute angle or an obtuse angle, or,
and an arc transition section is arranged at the joint of the groove bottom and the groove wall of the stator groove (21), and the radius of the arc transition section is D, wherein D is less than or equal to 1 mm.
9. The electric machine according to claim 2, characterized in that the reinforcement (40) wraps around the ends of the windings (30), the reinforcement (40) is filled in the gap between the insulation frame and the ends of the windings (30), and the axial height of the reinforcement (40) along the stator core is lower than the height of the end face of the insulation frame along the axial direction of the stator core.
10. The electric machine according to claim 2, characterized in that the reinforcement (40) is arranged in the stator slot (21), the reinforcement (40) is arranged close to one side of the bottom of the stator slot (21) and is attached to the stator yoke (10), and an overflow space (50) for the refrigerant to pass through is formed between one side of the reinforcement (40) close to the geometric center of the stator core and the notch of the stator slot (21).
11. An electric machine according to claim 10, characterized in that all said flow-through spaces (50) have a cross-sectional area E in the radial direction of the stator core, where 1.3. gtoreq.E/A. gtoreq.0.6.
12. The motor according to claim 2, wherein the reinforcement (40) is disposed in the stator slot (21), a molded line of an end portion of the reinforcement (40) facing one side of a geometric center of the stator core coincides with a molded line of an inner circle of the stator core, a central portion of the reinforcement (40) is provided with a refrigerant through hole (41), and the refrigerant through hole (41) is penetratingly disposed along an axial direction of the stator core.
13. The motor according to claim 12, wherein the refrigerant through hole (41) is a plurality of through holes, and the plurality of refrigerant through holes (41) are arranged at intervals.
14. The motor according to claim 12 or 13, wherein the sum of the cross-sectional areas of all the refrigerant through holes (41) is F, wherein 1.2 ≧ F/A ≧ 0.7.
15. The motor according to claim 12, wherein the cross-section of the coolant through-hole (41) is circular, oval, rectangular or regular polygonal.
16. A compressor comprising an electric motor, characterized in that the electric motor is according to any one of claims 1 to 15.
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CN202020813050.2U CN212435443U (en) | 2020-05-15 | 2020-05-15 | Motor and compressor with same |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113595269A (en) * | 2021-07-28 | 2021-11-02 | 珠海格力电器股份有限公司 | Punching sheet assembly, stator and motor |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113595269A (en) * | 2021-07-28 | 2021-11-02 | 珠海格力电器股份有限公司 | Punching sheet assembly, stator and motor |
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