CN205248933U - Rotor, motor and compressor - Google Patents

Abstract

The utility model provides a rotor, motor and compressor. The rotor is including the rotor yoke portion and the pivot that have the shaft hole, the shaft hole includes first portion and the second portion that communicates with the first portion, the pivot is stretched into to the first portion, just the pivot is still stretched into to the second portion, and/or rotor yoke portion radially extends to the second portion along the shaft hole at least. The utility model discloses a rotor does benefit to to form and uses rotor yoke portion and the magnetic flow loop of pivot as the main part through reducing the shaft hole hole in the rotor yoke portion to reduce the flux density of rotor, reduce the magnetic resistance, and then improve the electric efficiency, promote the performance of compressor.

Description

Rotor, motor and compressor

Technical field

The utility model relates to a kind of rotor, motor and compressor.

Background technology

Compressor is a kind of mechanical device that low-pressure gas is promoted to gases at high pressure, is the heart of refrigeration system,Particularly, it,, from the refrigerant gas of air intake duct suction low-temp low-pressure, drives piston by motor operationAfter it is compressed, discharge the refrigerant gas of HTHP to blast pipe, for kind of refrigeration cycle provides power,Thereby realize the kind of refrigeration cycle of compression condensation-expansion-evaporation (heat absorption).

The motor using in existing compressor comprises stator and rotor. As shown in Figure 1, existing rotor bagDraw together rotor yoke 2 and the rotating shaft 3 with axis hole 1, described rotating shaft 3 stretches in axis hole 1. Wherein, forReduction material cost, there is the unsettled situation of part in described axis hole 1, i.e. described rotating shaft 3 stretches to axis hole 1In end and axis hole 1 between be formed with a hole. Inventor finds, is positioned at the rotor yoke 2 of pore regionMagnetic flux density relatively high, the magnetic resistance in this region is increased, by reducing the efficiency of motor, unfavorable like thisIn the lifting of compressor performance.

Utility model content

The purpose of this utility model is to provide a kind of rotor, motor and compressor, to solve in prior artBecause of the too high problem that causes that electric efficiency is low of magnetic flux density in rotor yoke.

For solving the problems of the technologies described above, the utility model provides a kind of rotor, comprises the rotor with axis holeYoke portion and rotating shaft, the Part II that described axis hole comprises Part I and is communicated with Part I, described inRotating shaft stretches to described Part I, and described rotating shaft also stretches to described Part II, and/or, described in turnSub-yoke portion is at least along described aperture axis to extending to described Part II.

Preferably, in described rotor, described rotor yoke is along described aperture axis to described in extension shutoffPart II.

Preferably, in described rotor, described rotor yoke is along described aperture axis to extending a part toolThere is a hole.

Preferably, in described rotor, described rotor yoke equidimension extends to described Part II.

Preferably, in described rotor, described hole along the axial cross sectional shape of described axis hole be square,Trapezoidal or notch cuttype.

Preferably, in described rotor, the rotating shaft that stretches to described Part I is axial along described axis holeCross sectional shape is square, trapezoidal or notch cuttype.

Preferably, in described rotor, the rotating shaft that stretches to described Part II is axial along described axis holeCross sectional shape is square, trapezoidal or notch cuttype.

Preferably, in described rotor, described rotating shaft and described axis hole interference fit.

At this, the utility model also provides a kind of motor, comprises the stator of rotor and coated described rotor,Wherein, described rotor is the as above rotor described in any one.

In addition, the utility model provides again a kind of compressor, comprises the motor with stator and rotor, instituteStating motor is motor as above.

Than prior art, rotor of the present utility model is by reducing the axis hole hole in rotor yoke, profitIn the flux circuit forming taking rotor yoke and rotating shaft as main body, to reduce leakage field, reduce in rotor yokeMagnetic flux density, thus magnetic resistance reduced, reduce electric current, and then improve the efficiency of the motor with described rotor,Then promote the performance of the compressor with described motor.

Brief description of the drawings

Fig. 1 is the schematic diagram of existing rotor;

Fig. 2 is the end view drawing of the rotor shown in Fig. 1;

Fig. 3 is according to the schematic diagram of the rotor of the utility model embodiment mono-;

Fig. 4 is the end view drawing of the rotor shown in Fig. 3;

Fig. 5 is that the rotor shown in Fig. 3 is in the schematic diagram of removing rotating shaft;

Fig. 6 is radially extension the shutoff second along axis hole according to the rotor yoke of the utility model embodiment mono-The schematic diagram of part;

Fig. 7 is radially extending showing of a part along axis hole according to the rotor yoke of the utility model embodiment mono-Intention;

Fig. 8 is the schematic diagram of the rotor that provides of the utility model embodiment bis-;

Fig. 9 is the end view drawing of the rotor shown in Fig. 8;

Figure 10 is that the rotor shown in Fig. 8 is in the schematic diagram of removing rotating shaft.

In Fig. 3-7, description of reference numerals is as follows:

20-rotor; 21-rotating shaft; 22-axis hole; 23-rotor yoke.

In Fig. 8-10, description of reference numerals is as follows:

30-rotor; 31-rotating shaft; 32-axis hole; 33-rotor yoke.

Detailed description of the invention

Do further in detail below in conjunction with 3 to 10 pairs of rotors that the utility model proposes of accompanying drawing, motor and compressorDescribe in detail bright. It should be noted that, accompanying drawing all adopts the form of simplifying very much and all uses non-ratio accurately, onlyIn order to convenient, the object of aid illustration the utility model embodiment lucidly.

Embodiment mono-

Fig. 3 is the schematic diagram of the rotor that provides of the utility model embodiment mono-, and Fig. 4 is the rotor shown in Fig. 3End view drawing, Fig. 5 is the rotor shown in Fig. 3 in the schematic diagram of removing rotating shaft.

As shown in Fig. 3～5, a kind of rotor 20, comprises rotating shaft 21 and the rotor yoke 23 with axis hole 22,Wherein, the Part II 22b that described axis hole 22 comprises Part I 22a and is communicated with Part I 22a,And described rotating shaft 21 stretches in Part I 22a. Now, the length that described rotating shaft 21 coordinates with axis hole 22Degree is less than the degree of depth of axis hole 22, is convenient to assembling, and easy to process, saves material.

But inventor considers in Part II 22b and has air, due to the magnetic conductivity (being about 1) of airFar above rotor yoke 23 (rotor yoke is made up of silicon steel material conventionally, and its magnetic conductivity is about 7000～10000)The rotor flux that Part II 22b is corresponding can only be passed through from rotor yoke 23, and described Part IThe rotor flux of 22a both can circulate by rotor yoke 23, and also can use rotating shaft 21 and carry out conducting, because ofThis, rotor flux density corresponding to described Part II 22b is higher than rotor magnetic corresponding to Part I 22aLogical, thus, improve generally the magnetic resistance in rotor yoke 23, reduce the motor with rotor 20Efficiency.

In order to reduce magnetic resistance, described rotor yoke 23 at least along axis hole 22 radially extend to Part II 22b,To reduce as far as possible the sectional dimension of Part II 22b, reduce hole, thereby expand Part II 22b coupleThe flux circuit of the rotor flux of answering, and then reduce the magnetic flux density of corresponding region, reduce magnetic resistance, promote electricityThe efficiency of machine.

Optionally, described rotor yoke 23 is along radially extension the shutoff Part II 22b of axis hole 22, with shapeBecome solid area, as shown in Figure 6. Shown in Fig. 6 is rotor yoke 23 along the radially extension of axis hole 22 alsoThe schematic diagram of shutoff Part II 22b. Now, described axis hole 22 is a blind hole. In other embodiment, instituteState rotor yoke 23 along the radially extension part of axis hole 22 to Part II 22b, and there is a hole, asShown in Fig. 3, Fig. 5 and Fig. 7. Shown in Fig. 7 is the radially extension part of rotor yoke 23 along axis hole 21To the schematic diagram of the preferred embodiment of Part II 22.

If described rotor yoke 23 is along the radially extension part of axis hole 22 to Part II 22b, preferably described inRotor yoke 23 equidimensions extend to Part II 22b, as shown in Fig. 5 and Fig. 7, and to form symmetrical structure,Guarantee all even symmetry of magnetic circuit.

In addition, if described rotor yoke 23 along the radially extension part of axis hole 22 to Part II 22b alsoBe formed with a hole, described hole is chosen as square, trapezoidal or ladder along the axial cross sectional shape of axis hole 21Types etc., concrete, the utility model is also not construed as limiting, as long as be convenient to processing.

In addition, described Part I 22a is chosen as square, trapezoidal or notch cuttype along its axial cross sectional shapeDeng. Similarly, the rotating shaft that stretches to Part I 22a is along the axial also side of being chosen as of cross sectional shape of axis hole 22Shape, trapezoidal or notch cuttype etc., to coordinate with Part I 22a.

Optionally, described Part II 22a can be square, trapezoidal or notch cuttype along its axial cross sectional shapeDeng.

In preferred version, described rotating shaft 21 and axis hole 22 interference fit, to reduce as far as possible rotating shaft 21 and axleFit clearance between hole 22, is beneficial to the size that expands rotor yoke 23 on the one hand, is beneficial to and fills on the other handDivide and utilize rotating shaft 21 as magnetic circuit, by this two aspect, can more effectively reduce the magnetic in rotor yoke 23Flux density, reduces magnetic resistance, lifting motor efficiency.

Embodiment bis-

Embodiment bis-is with the difference of embodiment mono-: rotating shaft also stretches in the Part II of axis hole. Fig. 8Be the schematic diagram of the rotor 30 that provides of the utility model embodiment bis-, Fig. 9 is the rotor 30 shown in Fig. 8End view drawing, Figure 10 is that the rotor 30 shown in Fig. 8 is in the schematic diagram of removing rotating shaft 31.

As shown in Fig. 8～10, a kind of rotor 30, comprises rotating shaft 31 and the rotor yoke 33 with axis hole 32,Wherein, the Part II 32b that described axis hole 32 comprises Part I 32a and is communicated with Part I 32a,And described rotating shaft 31 stretches in Part II 32b. Preferred described rotating shaft 31 stretches to the length in axis hole 32Degree equals the degree of depth of axis hole 32. Adopt the mode that extends rotating shaft 31, make rotating shaft 31 shutoff axis holes 32, be beneficial toMake full use of rotating shaft 31 as magnetic circuit, so, can reduce equally the magnetic flux density in rotor yoke 33,Reduce magnetic resistance, lifting motor efficiency.

Preferably, described rotor yoke 33 at least along axis hole 32 radially extend to Part II 32b, with to the greatest extentMay reduce the sectional dimension of Part II 32b. Preferred, described rotor yoke 23 equidimensions extend toPart II 32b. For example described Part II 32b is square, trapezoidal or rank along its axial cross sectional shapeLadder type etc., concrete the utility model is also not construed as limiting, as long as just be convenient to processing can. Now, with Part IIIt is square, trapezoidal or notch cuttype that the rotating shaft 31 that 32b coordinates has along the axial cross sectional shape of axis hole 32 equallyDeng. Described Part I 32a is chosen as square, trapezoidal or ladder along the axial cross sectional shape of axis hole 32Type etc.

Similarly, described axis hole 32 and the preferred interference fit of rotating shaft 31.

Based on above-mentioned rotor 20,30, the utility model provides a kind of motor, comprise rotor 20 (30) andThe stator of coated rotor 20 (30). Because described motor has adopted the rotor 20 (30) of above-described embodiment,So the beneficial effect that described motor is brought by rotor please refer to above-described embodiment.

In addition,, based on the above-mentioned motor providing, the utility model also provides a kind of compressor, comprises and havingThe motor of stator and rotor 20 (30). Similarly, the beneficial effect correspondence that described compressor is brought by rotorWith reference to above-described embodiment. For example described compressor is a rolling rotor compressor.

To sum up, rotor of the present utility model, by reducing the axis hole hole in rotor yoke, is beneficial to and forms to turnThe flux circuit that sub-yoke portion and rotating shaft are main body, reduces leakage field, reduces the magnetic flux density in rotor yoke, fromAnd reduce magnetic resistance, and to lower electric current, and then improve the electric efficiency with described rotor, final lifting has instituteState the performance of the compressor of motor.

Foregoing description is only the description to the utility model preferred embodiment, not to the utility model scopeAny restriction, any change that the those of ordinary skill in the utility model field does according to above-mentioned disclosure,Modify, all belong to the protection domain of claims.

Claims (10)

1. a rotor, comprises rotor yoke and the rotating shaft with axis hole, and described axis hole comprises Part IAnd the Part II being communicated with Part I, described rotating shaft stretches to described Part I, it is characterized in that,Described rotating shaft also stretches to described Part II, and/or described rotor yoke is at least along described aperture axis to prolongingExtend described Part II.

2. rotor as claimed in claim 1, is characterized in that, described rotor yoke along described aperture axis toPart II described in extension shutoff.

3. rotor as claimed in claim 1, is characterized in that, described rotor yoke along described aperture axis toExtend a part to described Part II and there is a hole.

4. rotor as claimed in claim 3, is characterized in that, described rotor yoke equidimension extends to instituteState Part II.

5. rotor as claimed in claim 3, is characterized in that, described hole is along axial the cutting of described axis holeFace is shaped as square, trapezoidal or notch cuttype.

6. rotor as claimed in claim 1, is characterized in that, stretches to the rotating shaft edge of described Part IThe axial cross sectional shape of described axis hole is square, trapezoidal or notch cuttype.

7. rotor as claimed in claim 1, is characterized in that, stretches to the rotating shaft edge of described Part IIThe axial cross sectional shape of described axis hole is square, trapezoidal or notch cuttype.

8. rotor as claimed in claim 1, is characterized in that, described rotating shaft and described axis hole interference fit.

9. a motor, comprises rotor and is coated the stator of described rotor, it is characterized in that described rotorFor the rotor as described in any one in claim 1 to 8.

10. a compressor, comprises the motor with stator and rotor, it is characterized in that, described motor isMotor as claimed in claim 9.