CN110289705A - Motor prevents rotor slope structure, motor and compressor - Google Patents

The invention provides a motor rotor inclination prevention structure, a motor and a compressor, relates to the technical field of electrical equipment, and solves the technical problem that the rotor inclination is easily caused due to large deflection of a crankshaft in the motor operation process in the prior art. The anti-rotor inclination structure of the motor comprises a first acting body arranged on the inner wall of a stator and a second acting body arranged on the outer wall of a rotor, wherein a mutual exclusion magnetic field can be generated between the first acting body and the second acting body, the inclination of the rotor is at least partially offset, and the coaxiality between the stator and the rotor is improved. A mutual repulsion magnetic field is generated between the first action body and the second action body, when the deflection of the crankshaft is large and the rotor is inclined to be close to the inner wall of the stator, under the action of the mutual repulsion magnetic field, the repulsion force between the rotor and the stator is increased, so that the phenomenon of poor coaxiality or chamber sweeping between the stator and the rotor is avoided, and the stable and reliable operation of the motor is ensured; and the vibration of the whole shafting is reduced to a certain extent, so that the vibration and the noise of the whole compressor are also reduced.

A kind of motor for preventing rotor tilt structure, motor and compressor

Technical field

The present invention relates to technical field of electric equipment, more particularly, to a kind of motor for preventing rotor tilt structure, motor and pressure Contracting machine.

Background technique

Currently, generally first connecting stator with housing unit in compressor assembling process, rotor and crankshaft long axis connect It connects, while crankshaft other end connects other Pump Body Parts, lower flange as above, cylinder, roller, slide plate etc.；Then again by rotor It is also loaded onto shell with pump assembly, realizes the cooperation between rotor.

Applicants have discovered that at least there is following technical problem in the prior art:

There is the interstice coverage of specification when stationary state, between rotor, to guarantee sky that rotor surrounds in stator inner wall face In can normal rotation.But in the operational process of compressor, usually because the shafting balancing deficiency of compressor causes shafting to be shaken Dynamic or inclination, causes crankshaft amount of deflection larger, while driving rotor tilt, and then concentricity between stator and rotor is caused to deteriorate, Thorax phenomenon may be swept when serious, compressor is caused to be scrapped.Therefore the amount of deflection for reducing crankshaft in compressor operational process, turns The gradient of son, avoids that concentricity is bad between the two or sweeps thorax phenomenon, it is necessary to.

Summary of the invention

The purpose of the present invention is to provide a kind of motor for preventing rotor tilt structure, motor and compressors, to solve existing skill The technical issues of crankshaft amount of deflection is larger in motor operation course present in art, easily causes rotor tilt.It is provided by the invention all Many technical effects elaboration as detailed below that optimal technical scheme in more technical solutions can be generated.

To achieve the above object, the present invention provides following technical schemes:

A kind of motor for preventing rotor tilt structure provided by the invention, including being set to the first acting body of stator inner wall and setting It is placed in the second acting body of rotor outer wall, the magnetic of mutual exclusion can be generated between first acting body and second acting body , the inclination of the rotor is at least partly offset, the concentricity between the stator and the rotor is improved.

Optionally, first acting body is the first magnetic pole coated on the stator inner wall, and second acting body is The second magnetic pole coated on the rotor outer wall, first magnetic pole repel each other with second magnetic pole.

Optionally, first magnetic pole is all made of permanent-magnet material with second magnetic pole and is made.

Optionally, first magnetic pole and second magnetic pole are close to the long axis end of motor crankshaft, and described first The coating range of magnetic pole is the 1/2~2/3 of the stator shaft orientation length, and the coating range of second magnetic pole is the armature spindle To the 1/2~2/3 of length.

Optionally, the section of first magnetic pole and/or second magnetic pole is step-like or gradually expanded form.

Optionally, first acting body and second acting body are electromagnet, and first acting body and institute State the equal external power supply of the second acting body.

Optionally, first acting body is fixedly arranged on the inner wall of the stator, and second acting body is fixedly arranged on described turn The outer wall of son.

Optionally, the first acting body hot jacket is in the inner wall of the stator, and the second acting body hot jacket is in described turn The outer wall of son.

Optionally, first acting body is layed in the entire inner wall of the stator, and second acting body is layed in The entire outside wall surface of the rotor.

Optionally, first acting body is corresponding with the position of second acting body.

A kind of motor provided by the invention, the motor for preventing rotor tilt structure including stator, rotor and any description above.

A kind of compressor provided by the invention, including above-mentioned motor.

Optionally, the compressor is compressor in air conditioner.

A kind of motor for preventing rotor tilt structure, motor and compressor provided by the invention are arranged first in the inner wall of stator Acting body, and the second acting body is set in the outer wall of rotor, make the magnetic that mutual exclusion is generated between the first acting body and the second acting body , when crankshaft amount of deflection is larger, when rotor tilt is close to stator inner wall, under the action of mutual exclusion magnetic field, arranged between rotor and stator Repulsion increases, to avoid that concentricity is bad between stator and rotor or sweeps thorax phenomenon, ensure that the reliable and stable of motor Operation；And the vibration of entire shafting is reduced to a certain extent, to also reduce vibration and the noise of compressor entirety.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.

Fig. 1 is a kind of schematic cross-sectional view for motor that the specific embodiment of the invention provides, the first acting body in figure It is magnetisable coating with the second acting body；

Fig. 2 is the schematic diagram for the first motor for preventing rotor tilt structure that the specific embodiment of the invention provides；

Fig. 3 is the schematic diagram for second of motor for preventing rotor tilt structure that the specific embodiment of the invention provides；

Fig. 4 is the schematic diagram for the third motor for preventing rotor tilt structure that the specific embodiment of the invention provides；

Fig. 5 is the schematic diagram for the 4th kind of motor for preventing rotor tilt structure that the specific embodiment of the invention provides；

Fig. 6 is the schematic diagram for the 5th kind of motor for preventing rotor tilt structure that the specific embodiment of the invention provides；

Fig. 7 is a kind of schematic cross-sectional view for motor that the specific embodiment of the invention provides, the first acting body in figure It is electromagnet with the second acting body.

1, housing unit in figure；2, stator；3, main balance weight；4, pump assembly；5, air intake duct；6, rotor；7, second makees Use body；8, the first acting body；9, circumscripted power line；10, crankshaft short axle；11, crankshaft eccentric circle；12, crankshaft long axis；121, crankshaft Long axis end.

Specific embodiment

To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work Other embodiment belongs to the range that the present invention is protected.

As shown in Fig. 1-Fig. 7, the present invention provides a kind of motor for preventing rotor tilt structures, including are set to 2 inner wall of stator The first acting body 8 and be set to the second acting body 7 of 6 outer wall of rotor, can between the first acting body 8 and the second acting body 7 The magnetic field of mutual exclusion is generated, the inclination of rotor 6 is at least partly offset, improves the concentricity between stator 2 and rotor 6.

First acting body 8 is set in the inner wall of stator 2, and second acting body 7 is set in the outer wall of rotor 6, makes the first work With the magnetic field for generating mutual exclusion between body 8 and the second acting body 7, when crankshaft amount of deflection is larger, when rotor 6 is tilted close to 2 inner wall of stator, Under the action of mutual exclusion magnetic field, repulsive force increases between rotor 6 and stator 2, to avoid concentricity between stator 2 and rotor 6 It is bad or sweep thorax phenomenon, it ensure that the reliable and stable operation of motor；And entire shafting is reduced to a certain extent Vibration, to also reduce vibration and the noise of compressor entirety.

Optionally embodiment, the first acting body 8 are the first magnetic pole coated on 2 inner wall of stator, the second acting body 7 For the second magnetic pole coated on 6 outer wall of rotor, the first magnetic pole repels each other with the second magnetic pole.

Using the coating structure of coating magnetic material, simple process, structure is simple, high reliablity.

Optionally embodiment, the first magnetic pole are all made of permanent-magnet material with the second magnetic pole and are made.

It is reliable and stable using permanent-magnet material.

The coating thickness of first acting body 8 is δ 1, and the coating thickness of the second acting body 7 is δ 2, and 2 inner circle radius of stator is The exradius of R1, rotor 6 are R2, then have 2 < R1-R2 of δ 1+ δ.

δ 1+ 2 < R1-R2 of δ guarantees that rotor 6 can be in 2 inside normal rotation of stator.

Optionally embodiment, the first magnetic pole and the second magnetic pole are close to the long axis end 121 of motor crankshaft, and The coating range of one magnetic pole is the 1/2~2/3 of stator shaft orientation length, and the coating range of the second magnetic pole is the 1/ of rotor axial length 2~2/3.

Amount of deflection is larger at the long axis end 121 of motor crankshaft, and the first magnetic pole and the second magnetic pole are all set in close to length The end of axis also reduces the dosage of pole material while improving concentricity between stator and rotor, referring to Fig. 3.

Optionally embodiment, as shown in fig. 6, the arrangement side of discontinuous can also be used in the first magnetic pole and the second magnetic pole Formula can also reduce material utilization amount.

The section of optionally embodiment, the first magnetic pole and/or the second magnetic pole is step-like or gradually expanded form, the first magnetic The active force that active force between pole and the second magnetic pole in the long axis end 121 of crankshaft is greater than close to 11 one end of crankshaft eccentric circle is big It is small.

Using step-like or gradually expanded form structure, make the long axis end 121 between the first magnetic pole and the second magnetic pole in crankshaft Active force be greater than the amount of force close to 11 one end of crankshaft eccentric circle, i.e. the first magnetic in the big long axis end of crankshaft amount of deflection Active force between pole and the second magnetic pole is also big, and while guaranteeing stator degree of being coaxial with the rotor, material utilization amount is few, also more rationally.

As shown in figure 4, the first magnetic pole and the second magnetic pole are step-like；As shown in figure 5, the first magnetic pole and the second magnetic pole are equal For gradually expanded form；In addition, the first magnetic pole can also be used or the second magnetic pole is any to be step-like, the first magnetic pole or the second magnetic can also be used Extremely any is gradually expanded form；Or first magnetic pole and the second magnetic pole it is any be it is step-like, another is gradually expanded form.

It is step-like the multi-stage stairs greater than two-stage to can also be used such as the situation in Fig. 4.

Optionally embodiment, the first acting body 8 and the second acting body 7 are electromagnet, and 8 He of the first acting body The equal external power supply of second acting body 7.

First acting body 8 and the second acting body 7 are electromagnet, generate the magnetic pole of mutual exclusion when needing by external power supply, Flexibility is high.

Optionally embodiment, the first acting body 8 are fixedly arranged on the inner wall of stator 2, and the second acting body 7 is fixedly arranged on rotor 6 outer wall.

Optionally embodiment, 8 hot jacket of the first acting body is in the inner wall of stator 2, and 7 hot jacket of the second acting body is in rotor 6 outer wall.

First acting body, 8 hot jacket is in the inner wall of stator 2, and 7 hot jacket of the second acting body is in the outer wall of rotor 6, connection reliability It is high.

Optionally embodiment, the first acting body 8 are layed in the entire inner wall of stator 2, and the second acting body 7 is laid with In the entire outside wall surface of rotor 6.

First acting body 8 is layed in the entire inner wall of stator 2, and the second acting body 7 is layed in the entire outer wall of rotor 6 No matter face, rotor 6 tilt in which position, and mutual exclusion magnetic field can play a role, high reliablity.

Optionally embodiment, the first acting body 8 are corresponding with the position of the second acting body 7.

First acting body 8 is corresponding with the position of the second acting body 7, the interaction between stator 2 and rotor 6 directly, Effectively.

The present invention provides a kind of motors, including stator 2, rotor 6 and any of the above motor for preventing rotor tilt structure.

By the mutual exclusion magnetic field generated between the first acting body 8 and the second acting body 7, reduce crankshaft amount of deflection, improves stator 2 With the concentricity of rotor 6, avoid that concentricity is bad between the two or sweeps thorax.

Embodiment 1:

As depicted in figs. 1 and 2, the present invention provides a kind of motors, the shape of existing stator 2 and rotor 6 are kept, in stator 2 inner wall and the outer wall of rotor 6 respectively increase by one layer of coating material, during the operation of the compressor energy between stator 2 and rotor 6 It is enough to generate the other magnetic field (pole) repelled each other.The main field that its intensity is slightly weaker than stator 2 and 6 main body of rotor generates.

During the operation of the compressor, but the mutually exclusive magnetic pole between 2 inner wall of its outer wall and stator can be to a certain degree Resisting the inclination of crankshaft amount of deflection bring rotor 6, (when crankshaft amount of deflection is excessive, rotor 6 is tilted, and 6 outer wall of rotor is close to 2 inner wall of stator When, the repulsive force by 2 inner wall homopolar field of stator increases), and then avoid that concentricity is bad between the two or sweeps thorax Phenomenon.

In addition, this design can reduce entire shafting because the amount of deflection for avoiding crankshaft is excessive to a certain extent Vibration, to also reduce the vibration and noise of compressor entirety.

The coating of rotor 6 can be distributed in close or identical certain section of height, and can circumferentially fill or along week Occur in same or similar angle, and corresponds.Certainly uniformly distributed number, angle, every part of width can change. So under static state, power is relatively uniform along the radial distribution of 6 outer circle of rotor.

Embodiment 2:

Embodiment 2 the difference from embodiment 1 is that, the first acting body 8 and the second acting body 7 are electromagnet, that is, after being powered The magnetic field that mutual exclusion is generated between first acting body 8 and the second acting body 7, referring to Fig. 3.

The shape for keeping current stator 2 and rotor 6 respectively increases matched in the inner wall and 6 outer wall of rotor of stator 2 Can power device (structure), can external power supply, generate it can between stator 2 and rotor 6 during the operation of the compressor In addition the magnetic field (pole) repelled each other.

As it can be seen that 6 incline structure of preventing rotor can be magnetic coating material as described in Example 1, it is also possible to as implemented Described in example 2 two can energized structural；Be also possible to magnetic material with can energized structural combination, such as selection in stator 2 A surface in 6 outer wall of wall and rotor applies magnetic material, and installing at another can energized structural.

Can energized structural can be various shapes, in this embodiment be cylinder-like structure.

Can energized structural and stator 2 or rotor 6 assembly method can there are many selections, such as hot jacket etc..

There are many route settings for connecting external power supply, only demonstrates one kind.

Two can energized structural can external same power supplies or different electrical power.

The present invention provides a kind of compressor in air conditioner, including above-mentioned motor.

During the operation of the compressor, the mutually exclusive magnetic pole between 2 inner wall of 6 outer wall of rotor and stator can be to a certain degree Crankshaft amount of deflection bring rotor 6 is resisted to tilt.When crankshaft amount of deflection is excessive, rotor 6 is tilted, and 6 outer wall of rotor is close to 2 inner wall of stator When, receive 2 inner wall homopolar field of stator repulsive force increase, and then avoid between the two concentricity it is bad or sweep thorax show As.

The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.