CN216121951U - Rotor, motor and compressor thereof - Google Patents
Rotor, motor and compressor thereof Download PDFInfo
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- CN216121951U CN216121951U CN202121937597.4U CN202121937597U CN216121951U CN 216121951 U CN216121951 U CN 216121951U CN 202121937597 U CN202121937597 U CN 202121937597U CN 216121951 U CN216121951 U CN 216121951U
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Abstract
The utility model provides a rotor, wherein the rotor is provided with a plurality of rotor grooves, rotor aluminum strips are arranged in the rotor grooves, the rotor aluminum strips comprise upper aluminum strips and lower aluminum strips, the upper aluminum strips are connected with the lower aluminum strips in series, and the rotor grooves and the rotor form two included angles alpha1And alpha2(ii) a The height of the upper aluminum strip is L1The height of the lower aluminum strip is L2The sectional area S of the rotor aluminum bar and the height L of the rotor aluminum barIn a ratio of
The sectional area S of the rotor aluminum strip is respectively equal to the height L of the upper aluminum strip1And the lower aluminum strip height L2Is an integral nonlinear relation, and the height ratio of the upper aluminum strip to the lower aluminum strip is
The rotor realizes effective control of the rotor resistance, can reduce the rotor flux density and improve the starting capability of the motor; resonance noise and electromagnetic sound generated due to large motor harmonic waves in the compressor industry can be reduced; can strengthen the stability of aluminium strip structure, reduce the rotor aluminium strip condition of splitting.
Description
Technical Field
The utility model relates to the field of compressor motors, in particular to a rotor, a motor and a compressor thereof.
Background
In the traditional compressor motor industry, under the operating voltages of an x power supply (rated power supply is 115V/60HZ) and an r power supply (rated power supply is 208-230V/60 HZ), the problem that the motor cannot be started due to small starting torque of the motor easily occurs under the system working condition and the resistance torque of a pump body of a compressor. At present, the main solution in the industry is to increase the capacitance structurally, or increase the effective turn number of the stator secondary phase on the stator and reduce the turn ratio of the primary phase and the secondary phase. Both of these solutions increase the motor starting torque at the expense of motor efficiency.
Patent No. CN112311112A discloses a rotor punching sheet, a rotor core, and a motor rotor thereof, wherein the punching sheet can improve the starting capability of the motor, but increases the rotor magnetic leakage, increases the aluminum consumption of the rotor, and has low overall structural strength and poor noise vibration.
The patent No. CN212543473U discloses a rotor punching sheet, which mainly solves the problem that the arc-shaped groove top protrudes outwards and bulges, and has limited improvement on the rotor resistance and the rotor starting capability.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above-mentioned drawbacks of the prior art, it is an object of the present invention to provide a rotor that effectively solves the above-mentioned problems.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
the utility model provides a rotor, wherein, the rotor has a plurality of rotor grooves, the rotor inslot is provided with rotor aluminium bar, rotor aluminium bar includes aluminium bar and lower aluminium bar, go up the aluminium bar with aluminium bar establishes ties down, a plurality of rotor grooves with the rotor has two contained angles alpha1And alpha2(ii) a The height of the upper aluminum strip is L1The height of the lower aluminum strip is L2The ratio of the sectional area S of the rotor aluminum strip to the height L of the rotor aluminum strip is
The sectional area S of the rotor aluminum strip is respectively equal to the height L of the upper aluminum strip1And the lower aluminum strip height L2Is an integral nonlinear relation, and the height ratio of the upper aluminum strip to the lower aluminum strip is
As a further improvement of the utility model: the K value changes the total resistance value of the rotor aluminum strip, and the height L of the upper aluminum strip1Equal to the height L of the lower aluminum strip2。
As a further improvement of the utility model: the angle alpha1And said angle alpha2The axial direction of the rotor slot is in a vertically symmetrical triangular structure.
As a further improvement of the utility model: the angle alpha1Alpha is more than or equal to 2.5 degrees1Not more than 3.5 degrees and an included angle alpha2Alpha is more than or equal to 2.5 degrees2≤3.5°。
As a further improvement of the utility model: the cell type in rotor groove is the straight flute, just the tank bottom in a plurality of rotor grooves all with the interior circle of rotor is tangent, the groove top in a plurality of rotor grooves all with the excircle of rotor is tangent.
As a further improvement of the utility model: the rotor groove is provided with an upper groove body for placing the upper aluminum strip and a lower groove body for placing the lower aluminum strip, and the radial areas of the upper groove body and the lower groove body are unequal.
As a further improvement of the utility model: the rotor core is formed by laminating a plurality of rotor punching sheets which are reduced or enlarged in proportion, and the rotor core is fastened in a fastening point connection mode.
The utility model also provides a motor, wherein the rotor is the rotor.
The utility model also provides a compressor, wherein the rotor is the rotor.
Compared with the prior art, the utility model has the beneficial effects that:
the rotor realizes effective control of the rotor resistance, can reduce the rotor flux density and improve the starting capability of the motor; resonance noise and electromagnetic sound generated due to large motor harmonic waves in the compressor industry can be reduced; can strengthen the stability of aluminium strip structure, reduce the rotor aluminium strip condition of splitting. Drawings
FIG. 1 is a cross-sectional side view of the present invention.
Fig. 2 is a cross-sectional view of the front structure of the present invention.
Detailed Description
The utility model will now be further described with reference to the accompanying description and examples:
as shown in fig. 1 to 2, a rotor, wherein the rotor has a plurality of rotor slots 1, rotor aluminum bars 2 are arranged in the rotor slots 1, the rotor aluminum bars 2 include upper aluminum bars 21 and lower aluminum bars 22, the upper aluminum bars 21 are connected in series with the lower aluminum bars 22, rotor resistance is controlled by controlling sectional area S of the rotor aluminum bars 2 and height L of the rotor aluminum bars 2, and the plurality of rotor slots 1 and the rotor have two included angles α1And alpha2。
The utility model adopts a controllable aluminum strip structure, the controllable aluminum strip structure is arranged into an upper aluminum strip 21 and a lower aluminum strip 22, and the rotor slots 1 have different sizes, so that the area of the aluminum strip through which current passes is controlled by the sizes of the rotor slots 1.
As shown in the attached figures 1 to 2, the resistance formula of the rotor aluminum strip 2 is as follows
The ratio of the sectional area S of the rotor aluminum strip 2 to the height L of the rotor aluminum strip 2 is
The sectional area S of the rotor aluminum strip is respectively equal to the height L of the upper aluminum strip1And lower aluminum strip height L2For the integral non-linear relationship, the height ratio of the upper aluminum strip 21 to the lower aluminum strip 22 is
The upper aluminum strip 21 has a height L1The lower aluminum strip 22 has a height L2。
Integral Nonlinearity (INL) is one of the static performance parameters of an analog-to-digital converter, and refers to the difference between the actual conversion curve and the ideal conversion curve in the vertical axis direction, and the unit is LSB, i.e. least significant bit. Which represents the degree to which the actual transfer curve deviates from the ideal transfer curve. In the electrical industry, integral nonlinearity is the ability of a data converter to approach the slope of an ideal transfer function. It may be defined by an end-point connection or best-fit straight line.
First, the resistance of the rotor aluminum bar 2 satisfies the formula
S is the cross-sectional area of the rotor aluminum bar 2, and L is the height of the rotor aluminum bar 2; because rotor aluminium strip sectional area S and rotor aluminium strip height L satisfy:
Sl1is the height of the sectional area of the aluminum strip at a certain height SmaxThe maximum sectional area height of the upper aluminum strips is obtained, and therefore the sectional area S of the rotor aluminum strips and the height L of the rotor aluminum strips are in a nonlinear ratio, and therefore the sectional area S of the rotor aluminum strips 2 and the height L of the rotor aluminum strips are in an integral nonlinear relation.
As shown in fig. 1 to 2, the total resistance of the rotor aluminum bars 2 may be changed by K, and when K is 1, that is, the height of the upper aluminum bar 21 is equal to the height of the lower aluminum bar 22, the resistance of the rotor aluminum bar 2 is the maximum. And the resistance of the rotor aluminum bar 2 is increased, the magnetic density of the rotor during operation can be reduced, and the purpose of improving the starting torque of the motor is achieved.
Height L of upper aluminum strip 211And the height L of the lower aluminum strip 222May be different, and the height of the rotor core 3 is the height L of the upper aluminum bar 211And the height L of the lower aluminum strip 222The sum of the two sections of aluminum strips is consistent in material and density, only the sectional area of the aluminum strip is different from the height of the rotor aluminum strip, and the sectional area of the aluminum strip and the height of the rotor aluminum strip form a nonlinear integral relation, so that the upper-end aluminum strip resistor R is easy to obtain1And a lower end aluminum strip resistor R2Satisfies the following conditions:
the inverse relation is formed, the effect of controlling the resistance of the rotor can be indirectly achieved by controlling the K value of the upper and lower aluminum strips, the air gap flux density of the rotor is reduced, and therefore the starting torque of the rotor can be effectively improved.
As shown in fig. 1 to 2, the included angle α1And an included angle alpha2The axial direction of the rotor groove 1 is in a vertically symmetrical triangular structure. The included angle is set to enable the same aluminum bar conducting bar to be different in position in a magnetic field, so that the rotor can effectively avoid the peak valley of odd harmonics, the motor harmonics can be reduced, and the noise reduction effect is achieved; simultaneously, the inclined angle is symmetrical in the vertical direction, and the additional torque generated in the axial direction by the traditional rotor inclined groove structure can be eliminated. In addition, the triangle structure can reduce the internal stress of the aluminum strip, reduce the pouring difficulty of the aluminum strip, reduce the aluminum leakage condition, realize the stability of the reinforced aluminum strip structure and reduce the fracture condition of the rotor aluminum strip 2.
As shown in fig. 1 to 2, the included angle α1Alpha is more than or equal to 2.5 degrees1Not more than 3.5 degrees and an included angle alpha2Alpha is more than or equal to 2.5 degrees2Is less than or equal to 3.5 degrees. And when the rotor rotates clockwise in the positive direction, alpha is optimally set1≤α2When the rotor is rotated in the reverse direction, i.e., counterclockwise, α should be optimally set1≥α2. And the included angle between the upper end aluminum strip and the rotor needs to be equal to the included angle between the lower end aluminum strip and the rotor, and when the rotor operates, the two included angles alpha are formed between the upper end aluminum strip and the lower end aluminum strip1、α2The generated axial torque interaction is decomposed, and the axial additional torque generated by the pure chute aluminum strip can be counteracted.
As shown in fig. 1 to 2, the groove shape of the rotor groove 1 is a straight groove, the groove bottoms of the plurality of rotor grooves 1 are all tangent to the inner circle 4 of the rotor, and the groove tops of the plurality of rotor grooves 1 are all tangent to the outer circle 5 of the rotor. The inner circle 4 of the rotor has a radius R1The outer circle 5 of the rotor is of radius R2Circle of (2), R1、R2As required by the particular compressor design.
As shown in fig. 1 to 2, the rotor groove 1 has an upper groove body in which the upper aluminum bar 21 is placed and a lower groove body in which the lower aluminum bar 22 is placed, and the upper groove body and the lower groove body have different radial areas.
As shown in fig. 1 to 2, the rotor core 3 is further included, the rotor core 3 is formed by laminating a plurality of rotor sheets which are reduced or enlarged in proportion, and the rotor core 3 is fastened in a fastening point connection mode. The material and shape of the rotor end ring are not limited.
The rotor of the utility model can be applied to the motor and the compressor thereof.
The groove shape of the rotor can be designed into a round bottom groove or a top groove or a flat bottom groove or a top groove, and can be a single-mouse cage groove shape or a double-mouse cage groove shape, the size and the shape of the groove shape are not limited, and the specific shape of the rotor aluminum strip 2 is not limited.
The main functions of the utility model are as follows: the rotor is applied to the arrangement of rotors in the compressor and motor industries.
In summary, after reading the present disclosure, those skilled in the art can make various other corresponding changes without creative mental labor according to the technical solutions and concepts of the present disclosure, and all of them are within the protection scope of the present disclosure.
Claims (9)
1. A rotor, characterized in that the rotor has a plurality of rotor slots, and the rotor slots are provided with rotor groovesIs provided with a rotor aluminum strip, the rotor aluminum strip comprises an upper aluminum strip and a lower aluminum strip, the upper aluminum strip is connected with the lower aluminum strip in series, a plurality of rotor grooves and the rotor are provided with two included angles alpha1And alpha2(ii) a The height of the upper aluminum strip is L1The height of the lower aluminum strip is L2The ratio of the sectional area S of the rotor aluminum strip to the height L of the rotor aluminum strip is
The sectional area S of the rotor aluminum strip is respectively equal to the height L of the upper aluminum strip1And the lower aluminum strip height L2Is an integral nonlinear relation, and the height ratio of the upper aluminum strip to the lower aluminum strip is
2. A rotor according to claim 1 wherein said K value varies the total resistance of said rotor aluminum bars and said upper aluminum bar height L1Equal to the height L of the lower aluminum strip2。
3. A rotor according to claim 1, characterised in that said angle α is1And said angle alpha2The axial direction of the rotor slot is in a vertically symmetrical triangular structure.
4. A rotor according to claim 1, characterised in that said angle α is1Alpha is more than or equal to 2.5 degrees1Not more than 3.5 degrees and an included angle alpha2Alpha is more than or equal to 2.5 degrees2≤3.5°。
5. A rotor according to claim 1, wherein the slot type of the rotor slots is a straight slot, and the slot bottoms of the plurality of rotor slots are all tangential to the inner circle of the rotor, and the slot tops of the plurality of rotor slots are all tangential to the outer circle of the rotor.
6. The rotor as claimed in claim 5, wherein the rotor slot has an upper slot body for placing the upper aluminum bar and a lower slot body for placing the lower aluminum bar, and the radial areas of the upper slot body and the lower slot body are not equal.
7. The rotor of claim 1, further comprising a rotor core, wherein the rotor core is formed by laminating a plurality of rotor sheets which are scaled down or enlarged, and the rotor core is fastened by fastening point connection.
8. An electrical machine comprising a rotor as claimed in any one of claims 1 to 7.
9. A compressor, characterized by comprising a rotor as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121937597.4U CN216121951U (en) | 2021-08-18 | 2021-08-18 | Rotor, motor and compressor thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121937597.4U CN216121951U (en) | 2021-08-18 | 2021-08-18 | Rotor, motor and compressor thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216121951U true CN216121951U (en) | 2022-03-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121937597.4U Active CN216121951U (en) | 2021-08-18 | 2021-08-18 | Rotor, motor and compressor thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216121951U (en) |
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2021
- 2021-08-18 CN CN202121937597.4U patent/CN216121951U/en active Active
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