CN205355991U - Rotor, motor and compressor of motor - Google Patents
Rotor, motor and compressor of motor Download PDFInfo
- Publication number
- CN205355991U CN205355991U CN201620113901.6U CN201620113901U CN205355991U CN 205355991 U CN205355991 U CN 205355991U CN 201620113901 U CN201620113901 U CN 201620113901U CN 205355991 U CN205355991 U CN 205355991U
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- centre bore
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Abstract
The utility model discloses a rotor, motor and compressor of motor, the rotor includes rotor core, rotor core is last to be equipped with the centre bore that is used for the bent axle to pass, center on the multiple magnets groove of centre bore setting and be used for connecting the rivet hole of rivet, rotor core is formed by the superpose of a plurality of electromagnetism steel sheet, and permanent magnet, the permanent magnet is a plurality of and installs respectively the multiple magnets inslot, the remanence temperature coefficient alpha br of permanent magnet is less than fragmentary just its absolute value and is more than or equal to 0.13. According to the utility model discloses an effective regulation of the magnetic flow with temperature changes of permanent magnet production can be realized to the rotor of motor to can make the motor realize wide region speed governing operation and efficient.
Description
Technical field
This utility model relates to technical field of motors, especially relates to the rotor of a kind of motor, motor and compressor.
Background technology
In correlation technique, the magnetic field that the permanent magnet in tradition its rotor of permagnetic synchronous motor produces is regularly, and the air-gap field of motor is difficult to regulate, it is difficult to realizes wide-range-timing and runs.The induced voltage that motor produces because of permanent magnet increases along with the rising of rotating speed, when reaching the contravarianter voltage limit, to continue to raise rotating speed, it is necessary to adopt vector control strategy to carry out weak magnetic control.And usual weak magnetic control is limited in scope, it is difficult to realize wide-range-timing.And during weak magnetic field operation, the d shaft current offsetting magnetic field of permanent magnet exists always so that copper wastage increases, and electric efficiency reduces.
Utility model content
One of technical problem that this utility model is intended to solve in correlation technique at least to a certain extent.For this, the utility model proposes the rotor of a kind of motor, this rotor can make motor realize wide-range-timing run.
This utility model also been proposed a kind of motor with above-mentioned rotor.
This utility model also proposed a kind of compressor with above-mentioned motor.
The rotor of the motor according to this utility model first aspect embodiment, including: rotor core, described rotor core is provided with the centre bore for bent axle traverse, arrange around described centre bore multiple magnet slot and the rivet hole for connection rivet, described rotor core is formed by multiple electromagnetic steel plates are stacked；And permanent magnet, described permanent magnet is multiple and is separately mounted in the plurality of magnet slot, the residual magnetism temperature coefficient α Br of described permanent magnet less than zero and its absolute value more than or equal to 0.13.
The rotor of the motor according to this utility model embodiment, by arranging residual magnetism temperature coefficient α Br in the rotor less than zero and its absolute value permanent magnet more than or equal to 0.13, when running temperature at motor raises along with the rotating speed of motor and raises, the magnetic flux that this permanent magnet produces reduces, realize permanent magnet produce magnetic flux vary with temperature automatic, effectively regulate, and avoid control loaded down with trivial details being carried out magnetic flux in prior art by additional governing factor, reduce manufacturing cost, and the wide-range-timing that can realize motor runs and efficiency is high.
According to embodiments more of the present utility model, described magnet slot is linear type groove and multiple described magnet slot to be centrosymmetric formula arrangement around described centre bore.
Further, the edge of the contiguous described rotor core of described magnet slot is arranged, and the minimum spacing between the edge of described magnet slot and described rotor core is more than the thickness of described electromagnetic steel plate.
According to embodiments more of the present utility model, the Breadth Maximum every magnetic bridge of described rotor core is less than the direction of magnetization thickness of described permanent magnet.
According to embodiments more of the present utility model, described rotor core is additionally provided with oil through, described oil through be multiple and around described centre bore be centrosymmetric formula arrangement.
Further, described oil through apart from the distance of described centre bore less than the described rivet hole distance apart from described centre bore, described rivet hole apart from the distance of described centre bore less than the distance of centre bore described in the centre distance of described magnet slot.
Alternatively, described permanent magnet is Nd-Fe-B permanent magnet.
Motor according to this utility model second aspect embodiment, including: stator, described stator has rotor hole；Rotor, described rotor is the rotor of the motor according to the above-mentioned first aspect embodiment of this utility model, and described rotor is rotatably arranged in described rotor hole.
Motor according to this utility model embodiment, by arranging above-mentioned rotor, it is possible to achieve wide-range-timing runs and efficiency is high.
Compressor according to this utility model third aspect embodiment, including the motor according to the above-mentioned second aspect embodiment of this utility model.
Compressor according to this utility model embodiment, by arranging above-mentioned motor, it is possible to improves the performance of compressor.
Additional aspect of the present utility model and advantage will part provide in the following description, and part will become apparent from the description below, or is recognized by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage are from conjunction with will be apparent from easy to understand the accompanying drawings below description to embodiment, wherein:
Fig. 1 is the structural representation of the rotor according to this utility model embodiment；
Fig. 2 is the part-structure schematic diagram of the motor according to this utility model embodiment；
When Fig. 3 is the residual magnetism temperature coefficient α Br value difference of the permanent magnet of the rotor according to this utility model embodiment, the back EMF coefficient of motor varies with temperature relation schematic diagram.
Accompanying drawing labelling:
Rotor 100, rotor core 10, centre bore 11, magnet slot 12, rivet hole 13, oil through 14, every magnetic bridge 15, permanent magnet 16,
Stator 200, rotor hole 20, stator core 21, winding 22.
Detailed description of the invention
Being described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of same or like function from start to finish.The embodiment described below with reference to accompanying drawing is illustrative of, and is only used for explaining this utility model, and it is not intended that to restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " orientation or the position relationship of the instruction such as " center ", " length ", " width ", " thickness ", " interior ", " outward ", " radially ", " circumference " be based on orientation shown in the drawings or position relationship; be for only for ease of description this utility model and simplifying and describe; rather than instruction or imply indication device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " first ", " second " are only for descriptive purposes, and it is not intended that indicate or imply relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or implicitly include one or more these features.In description of the present utility model, " multiple " are meant that two or more, unless otherwise expressly limited specifically.
In description of the present utility model, it is necessary to explanation, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, for instance, it is possible to it is fixing connection, it is also possible to be removably connect, or connect integratedly；Can be mechanically connected, it is also possible to be electrical connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, it is possible to be connection or the interaction relationship of two elements of two element internals.For the ordinary skill in the art, it is possible to understand above-mentioned term concrete meaning in this utility model as the case may be.
The rotor 100 of the motor according to this utility model embodiment is described below with reference to Fig. 1-Fig. 3.It is understood that above-mentioned rotor 100 may be used for motor.
With reference to Fig. 1-Fig. 3, the rotor 100 according to the motor of this utility model first aspect embodiment, including rotor core 10 and permanent magnet 16.
Specifically, rotor core 10 is provided with the centre bore 11 for bent axle traverse, the multiple magnet slot 12 around centre bore 11 setting and the rivet hole 13 for connection rivet.Rotor core 10 is formed by multiple electromagnetic steel plates are stacked, is fixed into an entirety by rivet and coordinating of rivet hole 13 after multiple electromagnetic steel plates are stacked.
Permanent magnet 16 is for multiple (such as permanent magnet 16 is six) and is separately mounted in multiple magnet slot 12, the residual magnetism temperature coefficient α Br of permanent magnet 16 less than zero and its absolute value more than or equal to 0.13.It is understandable that, when the residual magnetism temperature coefficient α Br of permanent magnet 16 is less than zero, the magnetic flux that permanent magnet 16 produces reduces along with the rising of the running temperature of motor, and the absolute value of residual magnetism temperature coefficient α Br is more big, it is meant that the magnetic flux that permanent magnet 16 produces declines more fast along with the rising of the running temperature of motor.
It should be noted that, the running temperature of motor refers to temperature residing when motor runs, such as motor is mounted in compressor, when compressor operating, temperature in the housing of compressor can be the running temperature of motor, and now the temperature in the housing of compressor is substantially equal to the discharge temperature (delivery temperature) of compressor.
And the rotating speed that the running temperature of motor is as motor raises and raises, therefore in the process that the rotating speed of motor raises, the magnetic flux that permanent magnet 16 produces is as the rising of rotating speed and reduces.And the back EMF coefficient of motor be with permanent magnet 16 produce magnetic flux be positively related, therefore now the back EMF coefficient of motor is also as the rising of rotating speed and reduces.Additionally, the counter electromotive force (or being called induced voltage) that motor produces because of permanent magnet 16 raises along with the rotating speed of motor and raises, and the back EMF coefficient of motor is as the rising of rotating speed of motor and reduces, this means that when the rotating speed of motor raises, the speed that the counter electromotive force of motor raises reduces, namely the counter electromotive force of motor rises slowly, and therefore motor can run in high-speed range.
When curve linear relationship in Fig. 3 indicates the residual magnetism temperature coefficient α Br value difference of permanent magnet 16, the back EMF coefficient of motor varies with temperature relation.2 point as can be seen from Figure 3: one is value one timing at permanent magnet 16 residual magnetism temperature coefficient α Br, and the back EMF coefficient of motor reduces along with the rising of temperature；Two is that the residual magnetism temperature coefficient α Br of permanent magnet 16 is when taking different values, the speed that the back EMF coefficient of motor declines along with the rising of temperature is different, the absolute value of the residual magnetism temperature coefficient α Br of permanent magnet 16 is more big, and the speed that the back EMF coefficient of motor declines along with the rising of temperature is more fast.
Thus, being arranged in above-mentioned scope by the value of the residual magnetism temperature coefficient α Br of permanent magnet 16, motor is possible not only on relatively low rotating speed to run, and motor can also realize high-speed cruising, thus the wide-range-timing that can realize motor runs.And, this utility model, compared with traditional motor, is possible not only to realize wider range speed governing operation, and the copper loss of motor is less, motor operational efficiency is high, it is to avoid is carried out control loaded down with trivial details of magnetic flux in prior art by additional governing factor, reduces manufacturing cost.
The rotor 100 of the motor according to this utility model embodiment, by arranging the permanent magnet 16 that residual magnetism temperature coefficient α Br is less than zero and its absolute value is more than or equal to 0.13 in rotor 100, when running temperature at motor raises along with the rotating speed of motor and raises, the magnetic flux that this permanent magnet 16 produces reduces, the magnetic flux realizing permanent magnet 16 generation effectively regulates, and runs and efficiency height such that it is able to make motor realize wide-range-timing.
The rotor 100 of motor according to this utility model embodiment is described in detail below with reference to Fig. 1-Fig. 3.
With reference to Fig. 1-Fig. 3, magnet slot 12 be linear type groove and multiple magnet slot 12 (such as six magnet slot 12) arranges around the centre bore 11 of rotor core 10 formula that is centrosymmetric.Thus, it is possible to make the simple in construction of rotor 100 well-balanced, it is easy to processing, and make rotor core 10 uniform force when rotating.Further, the edge of magnet slot 12 adjacent rotor iron core 10 is arranged, and the minimum spacing between the edge of magnet slot 12 and rotor core 10 is more than the thickness of electromagnetic steel plate.Thus, it is possible to ensure the mechanical strength of rotor core 10, make rotor core 10 can realize stablizing, reliably rotating.
In embodiments more of the present utility model, the Breadth Maximum every magnetic bridge 15 of rotor core 10, less than the direction of magnetization thickness of permanent magnet 16, thus can reduce leakage field, improve the operational efficiency of motor.For example, referring to Fig. 1 and Fig. 2, the direction of magnetization of permanent magnet 16 is diametrical magnetization, this after the Breadth Maximum of magnetic bridge 15 less than the radial thickness (i.e. permanent magnet 16 along the thickness in the radial direction of rotor core 10) of permanent magnet 16.Needing exist for explaining, described " radially " refers to the radial direction of rotor core 10.
Rotor core 10 is additionally provided with oil through 14, such as, when the motor with above-mentioned rotor 100 being used in compressor, when coolant is entered in the housing of compressor by compressor, a part of coolant can enter in motor, the coolant now entering motor can pass through oil through 14 outflow motor, and the lubricating oil simultaneously carried in coolant can pass through in the oil sump that oil through 14 flows back into compressor.Oil through 14 is centrosymmetric formula arrangement for multiple (such as oil through 14 is six) and around centre bore 11.Thus, it is possible to make the simple in construction of rotor 100 well-balanced, it is easy to processing, and make rotor core 10 uniform force when rotating.
Further, the distance in oil through 14 distance center hole 11 is less than the distance in rivet hole 13 distance center hole 11, and the distance in rivet hole 13 distance center hole 11 is less than the distance of the centre distance centre bore 11 of magnet slot 12.Thus so that each hole on rotor core 10 rationally distributed, it is ensured that the bulk strength of rotor core 10, also make the logical oil of oil through 14 smooth and easy simultaneously.
Alternatively, permanent magnet 16 can be Nd-Fe-B permanent magnet, but is not limited to this.
In addition, it is necessary to here illustrate, the permanent magnet 16 of above-mentioned rotor 100 its HCJ when 25 DEG C more than 1920KA/m, can thus can ensure that the demagnetization rate of permanent magnet 16 is maintained in relatively low scope, thereby may be ensured that motor is normally, reliably run.
Below with reference to Fig. 2, the motor according to this utility model embodiment is described.
With reference to Fig. 2, the motor according to this utility model second aspect embodiment, including stator 200 and rotor 100.Stator 200 has rotor hole 20, and rotor 100 is the rotor 100 of the motor according to the above-mentioned first aspect embodiment of this utility model, and rotor 100 is rotatably arranged in rotor hole 20.Thus, when electrical power, rotor 100 can rotate relative to stator 200, runs thus realizing motor.Further, stator 200 can also include stator core 21 and winding 22, and winding 22 is located on stator core 21 and adjacent rotor 100 is arranged.
In one embodiment of this utility model, it is 18 groove six types of severe debility diseases that the rotor slot number of motor coordinates, but is not limited to this, is applicable to arbitrary rotor slot number and coordinates.
By arranging above-mentioned rotor 100, it is possible to make motor realize wide-range-timing and run, and the copper loss of motor is less, operational efficiency is high.
Motor according to this utility model embodiment, by arranging above-mentioned rotor 100, it is possible to achieve wide-range-timing runs and efficiency is high.
Compressor according to this utility model third aspect embodiment, including the motor according to the above-mentioned second aspect embodiment of this utility model.
Compressor according to this utility model embodiment, by arranging above-mentioned motor, it is possible to improves the performance of compressor.
Illustrate for the concrete example rotor 100 to this utility model embodiment and motor with above-mentioned motor for compressor below.
It is understood that the discharge temperature of compressor raises along with the rotating speed of motor and raises, namely the temperature residing for motor raises along with the rotating speed of motor and raises.Such as, the discharge temperature of compressor 58.8 DEG C when the rotating speed of motor is 30rps, the discharge temperature of compressor 75.8 DEG C when the rotating speed of motor is 60rps, the discharge temperature of compressor 95.2 DEG C when the rotating speed of motor is 90rps.
When motor low cruise, for instance when the rotating speed of motor is 30rps, now the discharge temperature of compressor is 58.8 DEG C, and the temperature residing for motor is relatively low.The permanent magnet 16 residual magnetic flux density under this operating temperature and coercivity are relatively big, and motor has a bigger back EMF coefficient, but owing to the counter electromotive force of now motor is also less, now have high efficiency during motor low cruise.
When motor middling speed is run, for instance when the rotating speed of motor is 60rps, now the discharge temperature of compressor is 75.8 DEG C, high when the temperature residing for motor is than low cruise.Rise during due to temperature relative to low cruise, when the permanent magnet 16 residual magnetic flux density under this operating temperature and coercivity are all than low speed little, when the back EMF coefficient of motor is than low cruise little, motor does not enter weak magnetic state, therefore motor middling speed run time there is high efficiency.
During high speed operation of motor, such as, when the rotating speed of motor is 90rps, now the discharge temperature of compressor is 95.2 DEG C, temperature residing for motor is high when running than middling speed, the permanent magnet 16 residual magnetic flux density under this operating temperature and coercivity are little when all running than middling speed, motor has less back EMF coefficient, and it is smaller that motor does not enter the electric current that weak magnetic state or weak magnetic offsets permanent magnet 16 magnetic field corresponding, therefore has high efficiency during high speed operation of motor.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example describe are contained at least one embodiment of the present utility model or example.In this manual, the schematic representation of above-mentioned term is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiments or example.
While there has been shown and described that embodiment of the present utility model, it will be understood by those skilled in the art that: these embodiments can being carried out multiple change, amendment, replacement and modification when without departing from principle of the present utility model and objective, scope of the present utility model is limited by claim and equivalent thereof.
Claims (9)
1. the rotor of a motor, it is characterised in that including:
Rotor core, described rotor core is provided with the centre bore for bent axle traverse, multiple magnet slot of arranging around described centre bore and the rivet hole for connection rivet, and described rotor core is formed by multiple electromagnetic steel plates are stacked；And
Permanent magnet, described permanent magnet is multiple and is separately mounted in the plurality of magnet slot, the residual magnetism temperature coefficient α Br of described permanent magnet less than zero and its absolute value more than or equal to 0.13.
2. the rotor of motor according to claim 1, it is characterised in that described magnet slot is linear type groove and multiple described magnet slot to be centrosymmetric formula arrangement around described centre bore.
3. the rotor of motor according to claim 2, it is characterised in that the edge of the contiguous described rotor core of described magnet slot is arranged, and the minimum spacing between the edge of described magnet slot and described rotor core is more than the thickness of described electromagnetic steel plate.
4. the rotor of motor according to claim 1, it is characterised in that the Breadth Maximum every magnetic bridge of described rotor core is less than the direction of magnetization thickness of described permanent magnet.
5. the rotor of motor according to claim 1, it is characterised in that be additionally provided with oil through on described rotor core, described oil through be multiple and around described centre bore be centrosymmetric formula arrangement.
6. the rotor of motor according to claim 5, it is characterized in that, described oil through apart from the distance of described centre bore less than the described rivet hole distance apart from described centre bore, described rivet hole apart from the distance of described centre bore less than the distance of centre bore described in the centre distance of described magnet slot.
7. the rotor according to the arbitrary described motor of claim 1-6, it is characterised in that described permanent magnet is Nd-Fe-B permanent magnet.
8. a motor, it is characterised in that including:
Stator, described stator has rotor hole；
Rotor, described rotor is the rotor of the motor according to any one of claim 1-7, and described rotor is rotatably arranged in described rotor hole.
9. a compressor, it is characterised in that include motor according to claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620113901.6U CN205355991U (en) | 2016-02-02 | 2016-02-02 | Rotor, motor and compressor of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620113901.6U CN205355991U (en) | 2016-02-02 | 2016-02-02 | Rotor, motor and compressor of motor |
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| Publication Number | Publication Date |
|---|---|
| CN205355991U true CN205355991U (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620113901.6U Active CN205355991U (en) | 2016-02-02 | 2016-02-02 | Rotor, motor and compressor of motor |
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| CN (1) | CN205355991U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451850A (en) * | 2016-10-13 | 2017-02-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor structure, permanent magnet synchronous motor and compressor |
| CN110011442A (en) * | 2016-06-30 | 2019-07-12 | 广东美芝制冷设备有限公司 | Motor rotor and motor, compressor with it |
| CN110112850A (en) * | 2019-05-31 | 2019-08-09 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor, motor, compressor and air conditioner |
-
2016
- 2016-02-02 CN CN201620113901.6U patent/CN205355991U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110011442A (en) * | 2016-06-30 | 2019-07-12 | 广东美芝制冷设备有限公司 | Motor rotor and motor, compressor with it |
| CN106451850A (en) * | 2016-10-13 | 2017-02-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor structure, permanent magnet synchronous motor and compressor |
| CN106451850B (en) * | 2016-10-13 | 2018-12-28 | 珠海格力电器股份有限公司 | Rotor structure, permanent magnet synchronous motor and compressor |
| CN110112850A (en) * | 2019-05-31 | 2019-08-09 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor, motor, compressor and air conditioner |
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