CN203027044U - Compressor and permanent magnet motor rotor device for compressor - Google Patents
Compressor and permanent magnet motor rotor device for compressor Download PDFInfo
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- CN203027044U CN203027044U CN 201220690584 CN201220690584U CN203027044U CN 203027044 U CN203027044 U CN 203027044U CN 201220690584 CN201220690584 CN 201220690584 CN 201220690584 U CN201220690584 U CN 201220690584U CN 203027044 U CN203027044 U CN 203027044U
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- permanent magnet
- compressor
- magnet motor
- rotor device
- mounting groove
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model discloses a compressor and a permanent magnet motor rotor device for the compressor. The permanent magnet motor rotor device is a built-in rotor device and comprises a rotor core and a plurality of mounting grooves, wherein the mounting grooves are formed on the rotor core and distributed around the center of the rotor core in a circumferential direction of the rotor core; permanent magnets are arranged in the mounting grooves; openings of the mounting grooves face towards the periphery of the rotor core; and first magnetic bridges close to the periphery of the rotor core are arranged at first ends of the mounting grooves. According to the permanent magnet motor rotor device for the compressor, the first magnetic bridges close to the periphery of the rotor core are arranged at the first ends of the mounting grooves, so that armature reaction can be inhibited effectively, torque pulsation can be reduced, and low vibration and low noise of a compressor system can be achieved.
Description
Technical field
The utility model relates to the Compressor Technology field, particularly relates to a kind of asymmetric magnetic bridge permanent magnet machine rotor for compressor and the compressor with this rotor.
Background technology
The torque pulsation of permanent magnet synchronous motor under load condition is source greatly in the noise of compressor.And the pulsation of magneto load torque is mainly that the non-sine due to cogging torque, counter potential waveform and drive current waveform, the factors such as air-gap field distortion that armature reaction causes cause.
Pulse in order to reduce the magneto load torque, reduce the compressor noise vibration, the method that usually adopts is to reduce the methods such as cogging torque and optimization counter potential waveform.Its Main Means mainly contains skewed stator slot, and the methods such as skewed-rotor and non-uniform gap adopt the mode of skewed stator slot can make the stator slot utilance reduce, and the coiling difficulty strengthens, and is unfavorable for that the technique of Automated winding realizes; The mode technology difficulty of skewed-rotor is large; The mode of non-uniform gap amount production. art is controlled the problems such as difficulty increasing.
In addition, in the ferrite permanent-magnet motor, because the ferrimagnet magnetic property is on the weak side, the unloaded air gap flux density less that its excitation field produces, so the main source of ferrite-type magneto load torque pulsation is from the impact of armature reaction.
The utility model content
The utility model is intended to one of solve the problems of the technologies described above at least to a certain extent.
For this reason, a purpose of the present utility model is to propose a kind ofly can effectively suppress armature reaction, the rotor device of permanent magnet motor that is used for compressor of torque ripple reduction.
Another purpose of the present utility model is to propose a kind of compressor.
According to the rotor device of permanent magnet motor for compressor of the present utility model, described rotor device of permanent magnet motor is the built-in rotor device and comprises: rotor core; With a plurality of mounting grooves, described a plurality of mounting groove be formed on described rotor core and around the center of described rotor core along the circumferential distribution of described rotor core, be provided with permanent magnet in each described mounting groove, each described mounting groove is opening towards described rotor core outer peripheral edges, is provided with the first magnetic bridge of the outer peripheral edges of contiguous described rotor core at the first end of each described mounting groove.
According to the rotor device of permanent magnet motor for compressor of the present utility model, be provided with the first magnetic bridge of the outer peripheral edges of contiguous described rotor core at the first end of each described mounting groove, can effectively suppress armature reaction, torque ripple reduction, thus realize low vibration, the low noise of compressor assembly.
In addition, the rotor device of permanent magnet motor that is used for compressor according to the utility model above-described embodiment can also have following additional technical characterictic:
Described the first magnetic bridge is Long Circle.
Each described mounting groove also is provided with the second magnetic bridge, and described the second magnetic bridge is located at the outer peripheral edges place of the contiguous described rotor core of the second end of each described mounting groove.
The length that is shorter in length than the first magnetic bridge of described the second magnetic bridge.
Described the second magnetic bridge is Long Circle.
Described the first magnetic bridge and described the second magnetic bridge on each described mounting groove are oppositely arranged.
Described mounting groove is the arc mounting groove, and described permanent magnet is arc-shaped permanent magnet.
Described permanent magnet is ferrite permanent magnet.
Permanent magnet is the radial magnetizing permanent magnetism body.
According to compressor of the present utility model, comprise the described rotor device of permanent magnet motor for compressor of above-mentioned any one.
Additional aspect of the present utility model and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Description of drawings
Above-mentioned and/or additional aspect of the present utility model and advantage are from obviously and easily understanding becoming the description of embodiment in conjunction with following accompanying drawing, wherein:
Fig. 1 is the schematic diagram according to the rotor device of permanent magnet motor that is used for compressor of an embodiment of the present utility model;
Fig. 2 is the schematic diagram according to the rotor device of permanent magnet motor that is used for compressor of another embodiment of the present utility model.
Embodiment
The below describes embodiment of the present utility model in detail, and the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, be intended to for explanation the utility model, and can not be interpreted as restriction of the present utility model.
in description of the present utility model, it will be appreciated that, term " " center ", " vertically ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of indications such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " only are used for describing purpose, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the present utility model, the implication of " a plurality of " is two or more, unless clear and definite concrete restriction is separately arranged.
In the utility model, unless clear and definite regulation and restriction are separately arranged, broad understanding should be done in the terms such as term " installation ", " being connected ", " connection ", " fixing ", for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also to be electrically connected to; Can be directly to be connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term in the utility model.
In the utility model, unless clear and definite regulation and restriction are separately arranged, First Characteristic Second Characteristic it " on " or D score can comprise that the first and second features directly contact, can comprise that also the first and second features are not directly contacts but by the other feature contact between them.And, First Characteristic Second Characteristic " on ", " top " and " above " comprise First Characteristic directly over Second Characteristic and oblique upper, or only represent that the First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " comprise First Characteristic under Second Characteristic and tiltedly, or only represent that the First Characteristic level height is less than Second Characteristic.
Describe in detail according to the rotor device of permanent magnet motor for compressor of the present utility model below with reference to accompanying drawing.
As depicted in figs. 1 and 2, according to the rotor device of permanent magnet motor for compressor of the present utility model, described rotor device of permanent magnet motor is the built-in rotor device and comprises: rotor core 10 and a plurality of mounting groove 20.
A plurality of mounting grooves 20 be formed on rotor core 10 and the center 40 of the sub-iron core 10 that rotates along the circumferential distribution of rotor core 10.Be provided with permanent magnet 30 in each mounting groove 20.Each mounting groove 20 is opening towards rotor core 10 outer peripheral edges.Be provided with the first magnetic bridge 201 of the outer peripheral edges of adjacent rotor iron core 10 at the first end of each mounting groove 20 (namely as shown in fig. 1 the left end of the mounting groove that is positioned at the top 20).
That is to say, mounting groove 20 first ends arrange the first magnetic bridge 201, always make the magnet first end increase magnetic when acting on excitation field due to armature field, by the first magnetic bridge 201 is set, change armature field magnetic line of force trend, thereby make the air-gap field distortion reduce to improve torque pulsation.
According to the rotor device of permanent magnet motor for compressor of the present utility model, be provided with the first magnetic bridge of the outer peripheral edges of adjacent rotor iron core at the first end of each mounting groove, can effectively suppress armature reaction, torque ripple reduction, thus realize low vibration, the low noise of compressor assembly.
According to an example of the present utility model, as shown in Figure 2, each mounting groove 20 also is provided with the second magnetic bridge 202.The second magnetic bridge 202 is located at the outer peripheral edges place of the second end (namely as shown in Figure 2 the right-hand member of the mounting groove that is positioned at the top 20) adjacent rotor iron core 10 of each mounting groove 20.The length that is shorter in length than the first magnetic bridge 201 of the second magnetic bridge 202.
Need to prove at this, above-mentioned " first end " and " the second end " are only for convenience of description, and can not be interpreted as it is restriction to the application.Take Fig. 2 as example, when counterclockwise rotating according to the rotor device of permanent magnet motor for compressor of the present utility model, " first end " refers to the left end of the mounting groove that is positioned at the top 20 as shown in Figure 2, and " the second end " refers to the right-hand member of the mounting groove that is positioned at the top 20 as shown in Figure 2.When rotating according to the rotor device of permanent magnet motor clockwise direction for compressor of the present utility model, " first end " refers to the right-hand member of the mounting groove that is positioned at the top 20 as shown in Figure 2, and " the second end " refers to the left end of the mounting groove that is positioned at the top 20 as shown in Figure 2.Here only be described with the mounting groove that is positioned at the top 20 shown in Fig. 2, the structure the when mounting groove of other positions rotates to the top and its do not repeat them here always.
That is to say, the first magnetic bridge 201 is located at the front side according to the direction of rotation of the rotor device of permanent magnet motor for compressor of the present utility model, and the second magnetic bridge 202 is located at the rear side according to the direction of rotation of the rotor device of permanent magnet motor for compressor of the present utility model, and the length that is shorter in length than the first magnetic bridge 201 of the second magnetic bridge 202 gets final product.This be because, when acting on excitation field, armature field always make the front side of magnet direction of rotation increase the weak magnetic of rear side of magnetic, direction of rotation, by the asymmetric setting of magnetic bridge, change armature field magnetic line of force trend, thereby make the air-gap field distortion reduce to improve torque pulsation.This is understandable for the person of ordinary skill of the art.
Shape about the first magnetic bridge 201 and the second magnetic bridge 202 is not particularly limited, as long as the length that is shorter in length than the first magnetic bridge 201 of the second magnetic bridge 202.For example, the first magnetic bridge 201 is that Long Circle and the second magnetic bridge 202 are Long Circle.
As shown in Figure 2, the first magnetic bridge 201 on each mounting groove 20 and the second magnetic bridge 202 are oppositely arranged.
As depicted in figs. 1 and 2, mounting groove 20 is the arc mounting groove, and permanent magnet 30 is arc-shaped permanent magnet.
Advantageously, permanent magnet 30 is ferrite permanent magnet.Further, permanent magnet 30 is the radial magnetizing permanent magnetism body.
According to compressor of the present utility model, comprise the above-mentioned rotor device of permanent magnet motor that is used for compressor.Electric machine rotor device can adopt 4 utmost points or 6 electrode structures.
Based on according to the technique effect that has for the rotor device of permanent magnet motor of compressor of the present utility model, also has corresponding technique effect according to compressor of the present utility model.
According to the rotor device of permanent magnet motor for compressor of the present utility model, this electric machine rotor device structure is by the asymmetric setting of the first magnetic bridge and the second magnetic bridge, can effectively suppress armature reaction, torque ripple reduction, thus realize low vibration, the low noise of compressor assembly.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the characteristics of this embodiment or example description.In this manual, the schematic statement of above-mentioned term not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or characteristics can be with suitable mode combinations in any one or more embodiment or example.
Although the above has illustrated and has described embodiment of the present utility model, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art is not in the situation that break away from principle of the present utility model and aim can change above-described embodiment, modification, replacement and modification in scope of the present utility model.
Claims (10)
1. a rotor device of permanent magnet motor that is used for compressor, is characterized in that, described rotor device of permanent magnet motor is the built-in rotor device and comprises:
Rotor core; With
A plurality of mounting grooves, described a plurality of mounting groove be formed on described rotor core and around the center of described rotor core along the circumferential distribution of described rotor core, be provided with permanent magnet in each described mounting groove, each described mounting groove is opening towards described rotor core outer peripheral edges, is provided with the first magnetic bridge of the outer peripheral edges of contiguous described rotor core at the first end of each described mounting groove.
2. the rotor device of permanent magnet motor for compressor according to claim 1, is characterized in that, described the first magnetic bridge is Long Circle.
3. the rotor device of permanent magnet motor for compressor according to claim 2, is characterized in that, each described mounting groove also is provided with the second magnetic bridge, and described the second magnetic bridge is located at the outer peripheral edges place of the contiguous described rotor core of the second end of each described mounting groove.
4. the rotor device of permanent magnet motor for compressor according to claim 3, is characterized in that, the length that is shorter in length than the first magnetic bridge of described the second magnetic bridge.
5. the rotor device of permanent magnet motor for compressor according to claim 3, is characterized in that, described the second magnetic bridge is Long Circle.
6. the rotor device of permanent magnet motor for compressor according to claim 3, is characterized in that, described the first magnetic bridge and described the second magnetic bridge on each described mounting groove are oppositely arranged.
7. the described rotor device of permanent magnet motor for compressor of any one according to claim 1-6, is characterized in that, described mounting groove is the arc mounting groove, and described permanent magnet is arc-shaped permanent magnet.
8. the described rotor device of permanent magnet motor for compressor of any one according to claim 1-6, is characterized in that, described permanent magnet is ferrite permanent magnet.
9. the described rotor device of permanent magnet motor for compressor of any one according to claim 1-6, is characterized in that, permanent magnet is the radial magnetizing permanent magnetism body.
10. a compressor, comprise the described rotor device of permanent magnet motor for compressor of any one in claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220690584 CN203027044U (en) | 2012-12-12 | 2012-12-12 | Compressor and permanent magnet motor rotor device for compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220690584 CN203027044U (en) | 2012-12-12 | 2012-12-12 | Compressor and permanent magnet motor rotor device for compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203027044U true CN203027044U (en) | 2013-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220690584 Expired - Fee Related CN203027044U (en) | 2012-12-12 | 2012-12-12 | Compressor and permanent magnet motor rotor device for compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203027044U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104158324A (en) * | 2014-08-06 | 2014-11-19 | 安徽美芝制冷设备有限公司 | Motor rotor and motor provided with same |
| CN107872134A (en) * | 2017-12-14 | 2018-04-03 | 山东大学 | A kind of surface-mount type composite excitation brushless synchronous generator and its operation method |
-
2012
- 2012-12-12 CN CN 201220690584 patent/CN203027044U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104158324A (en) * | 2014-08-06 | 2014-11-19 | 安徽美芝制冷设备有限公司 | Motor rotor and motor provided with same |
| CN107872134A (en) * | 2017-12-14 | 2018-04-03 | 山东大学 | A kind of surface-mount type composite excitation brushless synchronous generator and its operation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20191212 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |