CN2904437Y - Permanent magnet synchronous motor for refrigerator compressor - Google Patents

Permanent magnet synchronous motor for refrigerator compressor Download PDF

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Publication number
CN2904437Y
CN2904437Y CN 200620058089 CN200620058089U CN2904437Y CN 2904437 Y CN2904437 Y CN 2904437Y CN 200620058089 CN200620058089 CN 200620058089 CN 200620058089 U CN200620058089 U CN 200620058089U CN 2904437 Y CN2904437 Y CN 2904437Y
Authority
CN
China
Prior art keywords
permanent magnet
rotor
permagnetic synchronous
synchronous motor
permanent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 200620058089
Other languages
Chinese (zh)
Inventor
石晓波
陈忠华
王松
周磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WanBao Group Compressor Co., Ltd.
Original Assignee
GUANGZHOU REFRIGERATION CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GUANGZHOU REFRIGERATION CO Ltd filed Critical GUANGZHOU REFRIGERATION CO Ltd
Priority to CN 200620058089 priority Critical patent/CN2904437Y/en
Application granted granted Critical
Publication of CN2904437Y publication Critical patent/CN2904437Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to the technical field of the Permanent Magnet Synchronous Machine (PMSM) proposed with a PMSM used for a refrigerator compressor which comprises a concentric winding stator and a squirrel cage rotor. In the iron core of the rotor, four NdFeB permanent magnets shaped in a straight plate and the same size are embedded in a rhombic distribution along the axis, wherein the backlash Q1 at the rhombic obtuse angle formed by the permanent magnet is less than 1.5mm, and the obtuse angle B formed is equal to 130 plus or minus 5 degree, while the backlash Q2 at the rhombic acute angle formed by the permanent magnet is more than 10mm. The utility model has the advantages of reasonable structure, easy-construction, small size, light weight and high power density.

Description

A kind of freezer compressor permagnetic synchronous motor
Technical field
The utility model relates to the permagnetic synchronous motor technical field.
Background technology
At refrigeration industry, the heart of refrigeration plant is a compressor, most of power consumption is in compressor in the use, new national standard " domestic refrigerator power consumption limit value and energy efficiency grade " (GB12021.2-2003), power consumption level for refrigerator proposes strict restriction, and the performance height of compressor directly influences the performance of refrigerating system, reaches the A++ grade standard for guaranteeing refrigerator, must adopt efficiency motors to come Driven Compressor, permagnetic synchronous motor is comparatively desirable selection.
Freezer compressor generally adopts single-phase asynchronous motor to drive at present, and stator adopts with core formula winding, and rotor is common squirrel-cage, and the reactive power that produces in the running is big, and it is also bigger that the motor feels hot, causes electric efficiency low.Table 1 is 1.1KW synchronous machine and the contrast of asynchronous machine main performance index
Table 1 1.1KW synchronous machine and the contrast of asynchronous machine main performance index
Main performance Single-phase asynchronous motor Permagnetic synchronous motor
Load current A 7.2 6.35
Efficient % 73.0 81.5
Power factor 0.95 0.97
Starting current 40.0 31.0
Starting is changeed apart from multiple 1.7 2.3
Overload magnification 1.7 ≥2.3
Last table as seen, every main performance index of permagnetic synchronous motor is all superior than single-phase asynchronous motor, but still have further improvement, the space of further raising the efficiency, especially in the shape of the critical piece permanent magnet of synchronous machine with aspect being provided with, the permanent magnet major part of prior art is arranged to semicircle, can not effectively strengthen the difference of quadrature-axis reactance and longitudinal axis reactance, has hindered the further raising of electric efficiency.
The utility model content
The purpose of this utility model is to have proposed a kind of simple and practical, freezer compressor permagnetic synchronous motor that electric efficiency is high.
The utility model is realized by following technical solution:
A kind of freezer compressor permagnetic synchronous motor, comprise concentric winding mode stator and cage-shaped structure rotor, embed neodymium-iron-boron permanent magnet in the rotor, it is characterized in that: the straight plate shape neodymium-iron-boron permanent magnet that embeds 4 same specifications in the rotor core along axis direction, 4 non-touching formation rhombuses of permanent magnet distribute, permanent magnet in place, rhombus obtuse angle the gap be Q1, Q1<1.5mm, its obtuse angle of forming is B, B=130 ± 5 °, the gap at the rhombus acute angle place that permanent magnet is formed is Q2, Q2>10mm.
Described permanent-magnet block is Lc along the width of axis direction, and Lc and rotor core along the pass of the width L of axis direction are: 0.3mm≤L-Lc≤0.7mm, permanent-magnet block are in the centering position of rotor core.
Permanent magnet separates with discontiguous squirrel-cage bar in the gap at rhombus acute angle place.
As optimization, the thickness of described permanent-magnet block is Lt, 1.55mm≤Lt≤1.70mm; Air gap between stator and rotor is Lg, Lg=0.5 ± 0.05mm.
With existing similar technology contrast, the utlity model has rational in infrastructure, be easy to make, characteristics such as volume is little, in light weight, power density height.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is an I position enlarged drawing among Fig. 1;
Fig. 3 is a rotor axial schematic diagram of the present utility model;
1-stator among the figure, 11-armature coil groove, 2-rotor, 21, the 22-permanent magnet, 23-armature spindle, 24-squirrel-cage bar, 25-convex squirrel-cage bar.
Embodiment
With reference to figure 1, Fig. 2 and Fig. 3, a kind of freezer compressor permagnetic synchronous motor that the utility model proposes, comprise concentric winding mode stator 1 and cage-shaped structure rotor 2, the inner rim of stator 1 is provided with armature coil groove 11, rotor 2 is iron cores that periphery is provided with squirrel-cage bar 24, embed the straight plate shape neodymium-iron-boron permanent magnet (21 of 4 same sizes in the iron core that squirrel-cage bar 24 is surrounded, 22 each two), 4 straight plate shape neodymium-iron-boron permanent magnets (21,22 each two) in rotor core inside along the axis direction distribution that assumes diamond in shape, two obtuse angle B of the rhombus that forms between two blocks of permanent magnets 21 and the two blocks of permanent magnets 22 are 130 °, the gap at place, obtuse angle is Q1, Q1<1.5mm; Separated by two discontiguous convex squirrel-cage bars 25 between two acute angles of the rhombus that permanent magnet 21 and permanent magnet 22 form, its gap is Q2, Q2>10mm;
Described permanent-magnet block is Lc along the width of axis direction, and Lc and rotor core along the pass of the width L of axis direction are: 0.3mm≤L-Lc≤0.7mm, permanent-magnet block are in the centering position of rotor core.Permanent-magnet block is not contacted with mouse cage.
The thickness of described permanent-magnet block is Lt, 1.55mm≤Lt≤1.70mm; Air gap between stator and rotor is Lg, Lg=0.5 ± 0.05mm.
The manufacture process of permagnetic synchronous motor is as follows, make stator and rotor with silicon steel sheet, in stator, use the copper core winding armature coil, in rotor, embed the four straight plate shape of same specification neodymium-iron-boron permanent magnets (Fig. 3), respectively increase a slice in the both sides of rotor not with the silicon steel sheet of permanent magnet slot, after permanent magnet is encapsulated in internal rotor, adopt aluminium or casting in bronze to make squirrel-cage bar conductor in the rotor, form the mouse-cage type structure.
Below electric efficiency and input power are compared testing result table 2 and table 3 at EDW110 compressor operating POL for permagnetic synchronous motor and single-phase asynchronous motor with power:
Table 2 permagnetic synchronous motor and the contrast of single-phase asynchronous motor efficient
POL (N.cm) 2.0(%) 2.6(%) 3.0(%) 3.46(%)
Single-phase asynchronous motor 71.1 74.0 77.4 78.3
Permagnetic synchronous motor 1 83.6 87.2 88.1 88.4
Permagnetic synchronous motor 2 82.6 86.5 87.6 88.1
Permagnetic synchronous motor 3 83.5 87.4 88.5 88.3
Permagnetic synchronous motor 4 83.4 87.3 88.2 88.3
Permagnetic synchronous motor 5 83.2 87.6 88.4 88.5
Permagnetic synchronous motor 6 83.8 87.9 88.1 88.2
Table 3 permagnetic synchronous motor and asynchronous motor input power contrast test
Numbering 1 2 3 4 5 6 7 8
Asynchronous machine W 123.8 124.5 123.2 125.5 123.7 123.6 124.8 123.8
Synchronous machine W 109.2 110.1 110.5 110.8 109.8 110.0 110.7 109.3
Interpretation of result: electric efficiency is compared at the compressor operating POL, EDW110 monopole asynchronous motor efficient mean value is 77.4%, permagnetic synchronous motor efficient is 87.8%, permagnetic synchronous motor efficient exceeds 10 percentage points, after adopting permagnetic synchronous motor, the input power of EDW110 compressor on average reduces 14W.

Claims (5)

1. freezer compressor permagnetic synchronous motor, comprise concentric winding mode stator and cage-shaped structure rotor, embed neodymium-iron-boron permanent magnet in the rotor, it is characterized in that: the straight plate shape neodymium-iron-boron permanent magnet that embeds 4 same specifications in the rotor core along axis direction, 4 non-touching formation rhombuses of water magnet of a specified duration distribute, permanent magnet is Q1 in the gap at place, rhombus obtuse angle, Q1<1.5mm, its obtuse angle of forming is B, B=130 ± 5 °, the gap at the rhombus acute angle place that permanent magnet is formed is Q2, Q2>10mm.
2. a kind of freezer compressor permagnetic synchronous motor as claimed in claim 1, it is characterized in that: described permanent-magnet block is Lc along the width of axis direction, Lc and rotor core along the pass of the width L of axis direction are: 0.3mm≤L-Lc≤0.7mm, permanent-magnet block are in the centering position of rotor core.
3. a kind of freezer compressor permagnetic synchronous motor as claimed in claim 1 is characterized in that: permanent magnet separates with discontiguous squirrel-cage bar in the gap at rhombus acute angle place.
4. as claim 1 or 2 or 3 described a kind of freezer compressor permagnetic synchronous motors, it is characterized in that: the thickness of described permanent-magnet block is Lt, 1.55mm≤Lt≤1.70mm.
5. as claim 1 or 2 or 3 described a kind of freezer compressor permagnetic synchronous motors, it is characterized in that: the air gap between stator and rotor is Lg, Lg=0.5 ± 0.05mm.
CN 200620058089 2006-04-24 2006-04-24 Permanent magnet synchronous motor for refrigerator compressor Expired - Fee Related CN2904437Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200620058089 CN2904437Y (en) 2006-04-24 2006-04-24 Permanent magnet synchronous motor for refrigerator compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200620058089 CN2904437Y (en) 2006-04-24 2006-04-24 Permanent magnet synchronous motor for refrigerator compressor

Publications (1)

Publication Number Publication Date
CN2904437Y true CN2904437Y (en) 2007-05-23

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Application Number Title Priority Date Filing Date
CN 200620058089 Expired - Fee Related CN2904437Y (en) 2006-04-24 2006-04-24 Permanent magnet synchronous motor for refrigerator compressor

Country Status (1)

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CN (1) CN2904437Y (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102163898A (en) * 2010-02-23 2011-08-24 上海日立电器有限公司 Single-phase permanent-magnet synchronous motor for efficient fan
WO2012041259A1 (en) * 2010-09-30 2012-04-05 Emerson Electric Co. Variable capacity compressor with line-start btushles permanent magnet motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102163898A (en) * 2010-02-23 2011-08-24 上海日立电器有限公司 Single-phase permanent-magnet synchronous motor for efficient fan
WO2012041259A1 (en) * 2010-09-30 2012-04-05 Emerson Electric Co. Variable capacity compressor with line-start btushles permanent magnet motor

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
EE01 Entry into force of recordation of patent licensing contract

Assignee: QINGDAO BAOLANGE REFRIGERATION CO., LTD.

Assignor: Guangzhou Refrigeration Co., Ltd.

Contract fulfillment period: 2008.5.22 to 2016.4.23

Contract record no.: 2009370000102

Denomination of utility model: Permanent magnet synchronous motor for refrigerator compressor

Granted publication date: 20070523

License type: Exclusive license

Record date: 20090609

LIC Patent licence contract for exploitation submitted for record

Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.5.22 TO 2016.4.23; CHANGE OF CONTRACT

Name of requester: QINGDAO BAOLANGE REFRIGERATION CO., LTD.

Effective date: 20090609

TR01 Transfer of patent right

Effective date of registration: 20091204

Address after: No. 68, man street, man Town, Baiyun District, Guangdong, Guangzhou: 510470

Patentee after: WanBao Group Compressor Co., Ltd.

Address before: No. 12, man street, man Town, Baiyun District, Guangdong, Guangzhou: 510470

Patentee before: Guangzhou Refrigeration Co., Ltd.

C41 Transfer of patent application or patent right or utility model
ASS Succession or assignment of patent right

Owner name: GUANGZHOU WANBAO GROUP COMPRESSOR CO., LTD.

Free format text: FORMER OWNER: GUANGZHOU LENGJI CO., LTD.

Effective date: 20091204

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20070523

Termination date: 20140424

C17 Cessation of patent right