CN205647059U - For compressor motor with its compressor has - Google Patents
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- CN205647059U CN205647059U CN201620125848.1U CN201620125848U CN205647059U CN 205647059 U CN205647059 U CN 205647059U CN 201620125848 U CN201620125848 U CN 201620125848U CN 205647059 U CN205647059 U CN 205647059U
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Abstract
The utility model discloses a for compressor motor with its compressor has, wherein the motor includes: stator core, stator core is formed by the superpose of a plurality of stator iron plate, and every stator iron plate thickness is theta, theta <= 0.35mm, stator winding, rotor core, the rotor core cover is established in stator core just rotatablely for stator core, and rotor core has the spaced apart magnet groove of arranging of its circumference of a plurality of edges, and every magnet groove is equipped with the magnetic part respectively along axial extension and every magnet inslot of rotor core, and rotor core is formed by the superpose of a plurality of rotor iron plate, and every rotor iron plate thickness is delta, delta <= 0.35mm, every magnetic part satisfies the relational expression at the remanence br under 20 DEG C: br >= 1.35T, stator iron plate and rotor iron plate are that 50HZ, wave form are less than 3.0Wkg for sinusoidal, magnetism sense peak value for the iron loss value under the 1.5T condition in the frequency respectively. According to the utility model discloses a purpose of copper loss can be realized reducing by motor for the compressor, has improved the electric efficiency, promotes the price / performance ratio of motor.
Description
Technical field
This utility model relates to Compressor Technology field, more particularly, to a kind of electric moto used in compressor and the compressor with it.
Background technology
Bury the brushless motor of permanent magnet in rotor underground and be widely used in the field of household appliances such as compressor of air conditioner because of its higher efficiency.But, the efficiency of motor is difficult to get a promotion, and it is primarily due to the loss that copper loss and iron loss cause and cannot be inhibited.Specifically, the efficiency of motor depends on the loss after combining copper loss and iron loss.If accounting for lose, then when the facewidth of stator tooth is less, copper loss the loss caused accounts for leading, and when the facewidth is bigger, iron loss the loss caused accounts for leading.In current field of household appliances, electric efficiency has accomplished the level that comparison is high, copper loss and the stage of iron loss balance are i.e. reached in design, now by changing stator punching shape, either reduce copper loss or iron loss, the rising of another kind of loss will be caused, be the most all unable to reach the lifting of electric efficiency.
Utility model content
One of technical problem that this utility model is intended to solve in correlation technique the most to a certain extent.To this end, the utility model proposes a kind of electric moto used in compressor, the simple in construction of this electric moto used in compressor, electric efficiency is high, and cost performance is high.
This utility model also proposes a kind of compressor with above-mentioned compressor motor.
Electric moto used in compressor according to this utility model first aspect, including: stator core, described stator core has multiple stator tooth along its circumferentially spaced layout, stator slot is limited between adjacent two described stator tooths, described stator core is formed by multiple stator iron plates are stacked, the thickness of each described stator iron plate is θ, θ≤0.35mm；Stator winding, described stator winding is around being located on described stator tooth；Rotor core, it is interior and rotatable relative to described stator core that described rotor core is set in described stator core, described rotor core has multiple Magnet groove along its circumferentially spaced layout, each described Magnet groove is respectively equipped with magnetic part along the axially extending of described rotor core and each described Magnet groove, described rotor core is formed by multiple rotor iron plates are stacked, the thickness of each described rotor iron plate is δ, δ≤0.35mm, each described magnetic part remanent magnetism Br at 20 DEG C meets relational expression: Br >=1.35T, described stator iron plate and described rotor iron plate are 50HZ in frequency respectively, waveform is sinusoidal, magnetic strength peak value is that the core loss value under the conditions of 1.5T is less than 3.0W/kg.
According to the magnetic part that electric moto used in compressor of the present utility model, the rotor iron plate less by employing thickness of slab and stator iron plate and remanent magnetism are higher, it is possible to achieve reduce the purpose of copper loss, thus improve electric efficiency, the cost performance of motor is substantially improved.The simple in construction of this motor, electric efficiency is high, and cost performance is high.
It addition, according to electric moto used in compressor of the present utility model, it is also possible to have a following additional technical characteristic:
According to an embodiment of the present utility model, the coil pitch of described stator winding is 1.
According to an embodiment of the present utility model, the thickness θ of each described stator iron plate is 0.35mm, and the thickness δ of each described rotor iron plate is 0.35mm.
According to an embodiment of the present utility model, each described magnetic part remanent magnetism Br at 20 DEG C is 1.38T.
According to an embodiment of the present utility model, the nominal torque of described motor is Tn, and rated speed is n, Tn≤4.5N.m, n≤150rpm.
According to an embodiment of the present utility model, the axial length of described stator core is L1, and the external diameter of described stator core is D1, L1≤45mm, and L1/D1≤0.55.
According to an embodiment of the present utility model, the axial length of described rotor core is L2, and the external diameter of described rotor core is D2,0.5≤L2/D2≤1.
According to an embodiment of the present utility model, described magnetic part is along the axial a length of L3 of described rotor core, L2/L3 >=1.
According to the compressor of this utility model second aspect, including according to the electric moto used in compressor described in above-described embodiment.
Additional aspect of the present utility model and advantage will part be given 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
Fig. 1 is the structural representation of the electric moto used in compressor according to this utility model embodiment；
Fig. 2 is the curve chart that the efficiency of the electric moto used in compressor according to this utility model embodiment changes with the ratio (L1/D1) of the external diameter of axial length and the stator core of stator core；
Fig. 3 is the curve chart that the efficiency of the electric moto used in compressor according to this utility model embodiment changes with the ratio (L2/D2) of the external diameter of axial length and the rotor core of rotor core.
Reference:
100: motor；
11: stator core；111: stator tooth；112: stator slot；113: through hole；
12: rotor core；121: Magnet groove；122: magnetic part.
Detailed description of the invention
Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings.The embodiment described below with reference to accompanying drawing is exemplary, it is intended to be used for explaining this utility model, and it is not intended that to restriction of the present utility model.
1 to Fig. 3 specifically describes the electric moto used in compressor 100 according to this utility model first aspect embodiment below in conjunction with the accompanying drawings.
Electric moto used in compressor 100 according to this utility model embodiment includes stator core 11, stator winding (not shown) and rotor core 12.Specifically, stator core 11 has multiple stator tooth 111 along its circumferentially spaced layout, stator slot 112 is limited between adjacent two stator tooths 111, stator core 11 is formed by multiple stator iron plates are stacked, the thickness of each stator iron plate is θ, θ≤0.35mm, stator winding is around being located on stator tooth 111, it is interior and rotatable relative to stator core 11 that rotor core 12 is set in stator core 11, rotor core 12 has multiple Magnet groove 121 along its circumferentially spaced layout, each Magnet groove 121 is respectively equipped with magnetic part 122 along the axially extending of rotor core 12 and each Magnet groove 121, rotor core 12 is formed by multiple rotor iron plates are stacked, the thickness of each rotor iron plate is δ, δ≤0.35mm.
Specifically, stator core 11 has multiple stator tooth 111 along its circumferentially spaced layout, stator slot 112 is limited between adjacent two stator tooths 111, rotor core 12 is set on stator core 11 and rotatable relative to stator core 11, rotor core 12 has multiple Magnet groove 121 along its circumferentially spaced layout, and each Magnet groove 121 is respectively equipped with magnetic part 122 along the axially extending of rotor core 12 and each Magnet groove 121.Alternatively, rotor core 12 is formed by multiple rotor iron plates are stacked, and stator core 11 is formed by multiple stator iron plates are stacked, and, the thickness of each rotor iron plate and each stator iron plate is respectively less than equal to 0.35mm.
As it is shown in figure 1, in the present embodiment, the motor that number of magnetic poles is 6 100 of magnetic part 122 is listed.Wherein, define along its axially extended through hole 113 in stator core 11, each stator slot 112 connects with through hole 113, and rotor core 12 is rotatably arranged in the through hole 113 of stator core 11, and limits gap between the medial wall of the lateral wall of rotor core 12 and stator core 11.Preferably, six magnetic parts 122 are uniformly distributed along the circumference of rotor core 12, and the magnet iron piece of multiple number of magnetic poles is maintained in the circumference of rotor core 12 in the way of S pole and N pole separate and is equally spaced alternately arranged in a circumferential direction by rotor.
Further, each magnetic part 122 remanent magnetism Br at 20 DEG C meet relational expression: Br >=1.35T, stator iron plate and rotor iron plate respectively frequency be 50HZ, waveform be sinusoidal, magnetic strength peak value be that the core loss value under the conditions of 1.5T is less than 3.0W/kg.
Thus, the magnetic part 122 that electric moto used in compressor 100 according to this utility model embodiment, the rotor iron plate less by employing thickness of slab and stator iron plate and remanent magnetism are higher, it is possible to achieve reduce the purpose of copper loss, thus improve motor 100 efficiency, the cost performance of motor 100 is substantially improved.The simple in construction of this motor 100, electric efficiency is high, and cost performance is high.
In detailed description of the invention more of the present utility model, the quantity listing stator tooth 111 is 9, and the coil pitch of stator winding is the motor 100 of 1.Specifically, stator core 11 includes ring-type yoke and nine stator tooths 111, to inner circumferential side, distribution prominent, equally spaced is in a circumferential direction from yoke for nine stator tooths 111, stator winding is wound on stator tooth 111, preferably, stator winding use concentrate volume winding method around being located on stator core 11, i.e. pitch Y=1 of stator winding.The simple in construction of this motor 100, the winding method processing ease of stator winding, the efficiency of motor 100 is high, cost performance is high.
Preferably, according to an embodiment of the present utility model, the thickness θ of each stator iron plate is 0.35mm, and the thickness δ of each rotor iron plate is 0.35mm.With reference to Fig. 1, in the present embodiment, being made up of electromagnetic steel plate respectively of rotor iron plate and stator iron plate, thickness t is 0.35mm, it is 3.0W/kg for manufacturing the electromagnetic steel plate P1.5/50 (frequency be 50Hz, magnetic strength peak value be the core loss value under 1.5T) of stator iron plate and rotor iron plate, the Magnet that magnetic part 122 uses remanent magnetism to be 1.35T, HCJ Hcj is 1900kA/m.The motor 100 being made up of stator iron plate and the rotor iron plate of this thickness can realize reducing the purpose of copper loss, thus improves motor 100 efficiency, and the cost performance of motor 100 is substantially improved.
Alternatively, according to an embodiment of the present utility model, each magnetic part 122 remanent magnetism Br at 20 DEG C is 1.38T.Because the remanent magnetism of magnetic part 122 improves, the magnetic induction in stator core 11 and total magnetic flux is provided to increase the most accordingly, the counter electromotive force sensed in the stator windings also can promote accordingly, equally, the torque of stator current output increases, in the case of requiring to export same torque, the electric current that stator needs just can decline, stator current the copper loss produced also reduced.Simultaneously in the case of total specified output torque does not increases, decline due to copper loss, and due to the increase of magnetic flux, iron loss also presents the trend of increase, now can ensure performance and the cost performance of motor 100 by reducing the axial length of the stator core 11 of motor 100, improve Magnet and the utilization rate of silicon steel material.
In detailed description of the invention more of the present utility model, the nominal torque of motor 100 is Tn, and rated speed is n, Tn≤4.5N.m, n≤150rpm.Wherein, the axial length of stator core 11 is L1, and the external diameter of stator core 11 is D1, L1≤45mm, and L1/D1≤0.55.Motor 100 in the range of this size relationship efficiency when rated for service is higher, and cost performance is high.
Specifically, owing to the iron loss in iron core mainly includes magnetic hystersis loss and eddy-current loss, under certain output torque conditions, by the constraint to the long-pending thickness of the long-pending thickness of stator core 11 and stator core 11 with stator outer diameter ratio, can effectively suppress eddy-current loss, thus suppress iron loss, thus improve the efficiency of motor 100.And along with magnetic part 122 remanent magnetism Br improve, stator sensing counter electromotive force can promote, export same torque required for electric current can decline, stator current produce copper loss the most just have dropped.
But, under same rotational speed f, iron loss Pfe changes with the change of magnetic induction density B, when the remanent magnetism Br of magnetic part 122 improves, and in stator core 11, tooth, the magnetic induction in yoke portion can become big, cause iron loss Pfe to increase.Magnet remanent magnetism Br promotes the decline that not necessarily can bring overall losses, therefore under certain moment of torsion output condition, long-pending thickness and the long-pending thickness of stator core 11 by stator core 11 can make up this shortcoming with the constraint of stator outer diameter ratio.Thus, motor 100 according to this utility model embodiment, by the magnetic part 122 higher with stator outer diameter ratio and remanent magnetism of the long-pending thickness to the long-pending thickness of stator core 11 and stator core 11 with the use of, it is achieved that copper loss and the balance of iron loss, greatly improve motor 100 cost performance.
Such as, the axial length L 1 of stator core 11 is 45mm, the external diameter of stator core 11 is 90mm, L1/D1=0.5.Fig. 2 is motor 100 efficiency chart of the motor 100 representing present embodiment, L1/ (D1) is set to transverse axis, using to should ratio time motor 100 efficiency as the longitudinal axis, this figure illustrate L1/ (D1) ratio from 0.3 be changed to 1.0 time motor 100 efficiency.According to Fig. 2, when present embodiment L1/ (D1) ratio is more than 0.55, the efficiency curve of motor 100 has maintained an equal level or has presented downward trend, and motor 100 cost performance declines.Therefore under specified service condition, the axial length L 1 and L1/D1 ratio of the stator core 11 of the motor 100 of this utility model embodiment preferably meets relational expression: L1≤45mm and L1/D1≤0.55.
And according to an embodiment of the present utility model, the axial length of rotor core 12 is L2, the external diameter of rotor core 12 is D2,0.5≤L2/D2≤1.The efficiency of the motor 100 in the range of this size relationship is high, and cost performance is high.
Such as, the axial length L 2 of rotor core 12 is 46mm, rotor core 12 external diameter is 47.4mm, L2/D2 ≈ 0.97.Fig. 3 is the figure of the efficiency of the motor 100 representing present embodiment.Using the ratio L2/D2 of the axial length L 2 of rotor core 12 and the outer diameter D 2 of rotor core 12 as transverse axis, will change both ratio (L2/D2) time motor 100 efficiency as the longitudinal axis, it is shown that ratio from 0.3 be changed to 1.3 time motor 100 efficiency.According to Fig. 3, when the ratio (L2/D2) of the motor 100 of present embodiment is more than 1.0, motor 100 efficiency of present embodiment maintains an equal level or on a declining curve.It addition, when ratio is in the range of 0.5≤L2/D2≤1.0 time, and the efficiency outside motor 100 efficiency relatively this scope of present embodiment is obviously improved, and cost performance is optimum.Therefore in this case, particularly preferred ratio meets relational expression: 0.5≤L2/D2≤1.0.
Thus, by using the magnetic part 122 that remanent magnetism is higher, the physical dimension of motor 100 is carried out Proper Match simultaneously, making while copper loss declines, iron loss does not dramatically increases, and i.e. achieves the balance of copper loss and iron loss, thus improve the efficiency of motor 100, the cost performance of motor 100 is substantially improved.
Further, magnetic part 122 is along the axial a length of L3 of rotor core 12, L2/L3 >=1.It is to say, magnetic part 122 is located in the Magnet groove 121 of rotor core 12, and the axial length of magnetic part 122 is less than or equal to the axial length of rotor core 12.Thus, by the axial length of rotor core 12 with magnetic part 122 is carried out Proper Match, the brow leakage of motor 100 can be significantly improved, improve the utilization rate of the silicon steel material of magnetic part 122 material and rotor core 12, thus improve efficiency and the cost performance of motor 100.
Alternatively, according to an embodiment of the present utility model, the cross sectional shape of each Magnet groove 121 forms in-line, V-arrangement, U-shaped or W shape.With reference to Fig. 1, in the present embodiment, having six Magnet grooves 121 in rotor core 12, the cross sectional shape of each Magnet groove 121 is respectively formed in-line.Wherein, the concrete shape of Magnet groove 121 specifically can be arranged according to actual requirement, and this is not especially limited by this utility model.
According to the compressor of this utility model second aspect embodiment, including the electric moto used in compressor 100 according to above-described embodiment.Owing to the electric moto used in compressor 100 according to this utility model embodiment has above-mentioned technique effect, therefore, also having the simple in construction of above-mentioned technique effect, i.e. this compressor according to the compressor of the embodiment of the present application, stock utilization is high, and cost performance is high.
Other compositions of compressor according to this utility model embodiment and operation are the most all known, are not detailed herein.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", on " ", D score, " front ", " afterwards ", " left ", " right ", " vertically ", " level ", " push up ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axially ", " radially ", orientation or the position relationship of the instruction such as " circumferential " are based on orientation shown in the drawings or position relationship, it is for only for ease of description this utility model and simplifies description, rather than indicate or imply that the device of indication 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 used for describing purpose, and it is not intended that instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or implicitly include at least one this feature.In description of the present utility model, " multiple " are meant that at least two, such as two, three etc., unless otherwise expressly limited specifically.
In this utility model, unless otherwise clearly defined and limited, term " is installed ", " being connected ", " connection ", the term such as " fixing " should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be mechanically connected, it is also possible to be electrical connection or each other can communication；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be connection or the interaction relationship of two elements of two element internals, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in this utility model can be understood as the case may be.
In this utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or be merely representative of fisrt feature level height higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than second feature.
In the description of this specification, the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means that the specific features, structure, material or the feature that combine this embodiment or example description are contained at least one embodiment of the present utility model or example.In this manual, the schematic representation of above-mentioned term is necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be to combine in one or more embodiments in office or example in an appropriate manner.Additionally, in the case of the most conflicting, the feature of the different embodiments described in this specification or example and different embodiment or example can be combined and combine by those skilled in the art.
Although above it has been shown and described that embodiment of the present utility model, it is understandable that, above-described embodiment is exemplary, it is not intended that to restriction of the present utility model, above-described embodiment can be changed in the range of this utility model, revises, replace and modification by those of ordinary skill in the art.
Claims (9)
1. an electric moto used in compressor, it is characterised in that including:
Stator core, described stator core has multiple stator tooth along its circumferentially spaced layout, limits stator slot between adjacent two described stator tooths, and described stator core is formed by multiple stator iron plates are stacked, the thickness of each described stator iron plate is θ, θ≤0.35mm；
Stator winding, described stator winding is around being located on described stator tooth；
Rotor core, it is interior and rotatable relative to described stator core that described rotor core is set in described stator core, described rotor core has multiple Magnet groove along its circumferentially spaced layout, each described Magnet groove is respectively equipped with magnetic part along the axially extending of described rotor core and each described Magnet groove, described rotor core is formed by multiple rotor iron plates are stacked, the thickness of each described rotor iron plate is δ, δ≤0.35mm, each described magnetic part remanent magnetism Br at 20 DEG C meets relational expression: Br >=1.35T
Described stator iron plate and described rotor iron plate respectively frequency be 50HZ, waveform be sinusoidal, magnetic strength peak value be that the core loss value under the conditions of 1.5T is less than 3.0W/kg.
Electric moto used in compressor the most according to claim 1, it is characterised in that the coil pitch of described stator winding is 1.
Electric moto used in compressor the most according to claim 2, it is characterised in that the thickness θ of each described stator iron plate is 0.35mm, the thickness δ of each described rotor iron plate is 0.35mm.
Electric moto used in compressor the most according to claim 2, it is characterised in that each described magnetic part remanent magnetism Br at 20 DEG C is 1.38T.
5., according to the electric moto used in compressor according to any one of claim 1-4, it is characterised in that the nominal torque of described motor is Tn, rated speed is n, Tn≤4.5N.m, n≤150rpm.
Electric moto used in compressor the most according to claim 5, it is characterised in that the axial length of described stator core is L1, the external diameter of described stator core is D1, L1≤45mm, and L1/D1≤0.55.
Electric moto used in compressor the most according to claim 6, it is characterised in that the axial length of described rotor core is L2, the external diameter of described rotor core is D2,0.5≤L2/D2≤1.
Electric moto used in compressor the most according to claim 7, it is characterised in that described magnetic part is along the axial a length of L3 of described rotor core, L2/L3 >=1.
9. a compressor, it is characterised in that include according to the electric moto used in compressor according to any one of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620125848.1U CN205647059U (en) | 2016-02-17 | 2016-02-17 | For compressor motor with its compressor has |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620125848.1U CN205647059U (en) | 2016-02-17 | 2016-02-17 | For compressor motor with its compressor has |
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| CN205647059U true CN205647059U (en) | 2016-10-12 |
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| CN201620125848.1U Active CN205647059U (en) | 2016-02-17 | 2016-02-17 | For compressor motor with its compressor has |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105553135A (en) * | 2016-02-17 | 2016-05-04 | 广东美芝制冷设备有限公司 | Motor for compressor and compressor with motor |
| CN105610253A (en) * | 2016-02-17 | 2016-05-25 | 广东美芝制冷设备有限公司 | Motor for compressor and compressor with motor |
| EP3490111A1 (en) * | 2017-11-22 | 2019-05-29 | Hamilton Sundstrand Corporation | Permanent magnet generator rotor for integrated drive generator |
-
2016
- 2016-02-17 CN CN201620125848.1U patent/CN205647059U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105553135A (en) * | 2016-02-17 | 2016-05-04 | 广东美芝制冷设备有限公司 | Motor for compressor and compressor with motor |
| CN105610253A (en) * | 2016-02-17 | 2016-05-25 | 广东美芝制冷设备有限公司 | Motor for compressor and compressor with motor |
| CN105553135B (en) * | 2016-02-17 | 2018-09-11 | 广东美芝制冷设备有限公司 | Electric moto used in compressor and compressor with it |
| CN105610253B (en) * | 2016-02-17 | 2018-11-23 | 广东美芝制冷设备有限公司 | Electric moto used in compressor and compressor with it |
| EP3490111A1 (en) * | 2017-11-22 | 2019-05-29 | Hamilton Sundstrand Corporation | Permanent magnet generator rotor for integrated drive generator |
| US10826342B2 (en) | 2017-11-22 | 2020-11-03 | Hamilton Sunstrand Corporation | Permanent magnet generator rotor for integrated drive generator |
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