CN106981939A - Permanent-magnetic synchronous motor rotor, motor, refrigeration compressor and motor production method - Google Patents
Permanent-magnetic synchronous motor rotor, motor, refrigeration compressor and motor production method Download PDFInfo
- Publication number
- CN106981939A CN106981939A CN201710344898.8A CN201710344898A CN106981939A CN 106981939 A CN106981939 A CN 106981939A CN 201710344898 A CN201710344898 A CN 201710344898A CN 106981939 A CN106981939 A CN 106981939A
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- China
- Prior art keywords
- balance
- rotor
- permanent magnet
- rotor core
- motor
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- 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.)
- Pending
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 22
- 238000005057 refrigeration Methods 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 239000003507 refrigerant Substances 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 26
- 238000004080 punching Methods 0.000 abstract description 23
- 229910052742 iron Inorganic materials 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 7
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 3
- 239000003292 glue Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/16—Centering rotors within the stator; Balancing rotors
- H02K15/165—Balancing the rotor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention provides a kind of refrigeration compressor permanent-magnetic synchronous motor rotor and dynamic balancing adjusting method, including rotor core, permanent magnet, rotor core is formed by stacking by multiple punchings, punching includes common punching and balance punching, balance punching is arranged on the both sides of common punching, in balance punching multiple through holes are circumferentially evenly arranged around its axle center, through hole is superimposed to form balance pipe, balance pipe has certain depth along the axially in parallel direction of rotor core, permanent magnet is evenly arranged around the axle center of rotor core, rotor manufacture craft is simple, cost is low, before permanent magnet is placed, dynamic balancing hole has just been reserved in punching, it need not be drilled on the steel disc of motor, solve the puzzlement of iron filings, save the man-hour for removing scrap iron removing, reduce the risk of compressor failure.After rotor installation, dynamic balancing measurement is carried out, unbalanced position and weight is determined, according to test result, the balanced nail of different length is inserted in balance pipe, the regulation dynamic balance method is simple, convenient.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a permanent magnet synchronous motor rotor for a refrigeration compressor, a motor, the refrigeration compressor and a motor production method.
Background
The stator structure of the online starting permanent magnet motor is the same as that of a common induction motor, but the rotor structure is more complex than that of the common induction motor. There are both aluminium slots for starting and permanent magnets for excitation. In order to give room for the permanent magnets and to obtain a higher efficiency, the aluminium end ring of such rotors is usually designed to be thin, so that it is not possible to correct the balance on the aluminium end ring. Therefore, the method for adjusting the dynamic balance of the motor generally adopts the steps of calibrating the dynamic balance on the silicon steel sheet or using dynamic balance mud.
Firstly, the iron filings are difficult to clean due to the action of the permanent magnet, the cleanliness requirement of the motor by the compressor is high, impurities are not allowed to exist in a compressor system, and a lot of labor is usually spent on removing the iron filings. And for a sealed motor, because the dynamic balance mud is adhered to the aluminum end ring to adjust the dynamic balance, the dynamic balance mud is easy to fall off due to the circulation of an oil way in the whole system, and the system is damaged.
In summary, it is an urgent technical problem to be solved by those skilled in the art to find a device or method that can adjust dynamic balance without generating iron chips difficult to clean or easily falling off.
Disclosure of Invention
The invention aims to provide a permanent magnet synchronous motor rotor for a refrigeration compressor, a motor, the refrigeration compressor and a motor production method aiming at the defects of the prior art.
In order to realize the purpose of the invention, the invention adopts the following technical scheme:
a permanent magnet synchronous motor rotor for a refrigeration compressor comprises a rotor core and permanent magnets, wherein the rotor core is formed by stacking a plurality of stamped sheets, each stamped sheet comprises a common stamped sheet and a balance stamped sheet, the balance stamped sheets are arranged on two sides of the common stamped sheet, a plurality of through holes are uniformly arranged on the balance stamped sheets in the circumferential direction around the axis of the balance stamped sheet, the through holes are stacked to form balance holes, the balance holes have a certain depth in the axial parallel direction of the rotor core, the permanent magnets are uniformly arranged around the axis of the rotor core,
further, the depth of the balance hole was 30 mm.
Further, a balance nail is installed in the balance hole.
Further, the balance hole is a screw hole.
Further, the balance nail is a screw matched with the screw hole.
Further, the balance pin is an elastic pin matched with the balance hole.
An electrical machine comprising a rotor as claimed in any preceding claim.
A refrigeration compressor comprises the motor.
A production method of a permanent magnet synchronous motor for a refrigeration compressor comprises the following steps:
1) uniformly forming a plurality of balance holes on the rotor core around the axis of the rotor core;
2) uniformly arranging permanent magnets around the axis of the rotor core;
3) performing dynamic balance test to determine unbalanced position and unbalanced weight;
4) and according to the test result, balance nails with different lengths are inserted into the balance holes.
The invention has the advantages that:
1. the rotor provided by the invention has the advantages of simple manufacturing process and low cost, the dynamic balance hole is reserved on the punching sheet before the permanent magnet is placed, and the hole does not need to be drilled on the steel sheet of the motor, so that the trouble of scrap iron is solved, the working time for removing the scrap iron is saved, and the risk of compressor failure is reduced.
2. The dynamic balance of the rotor adopts a mode of inserting balance nails, and no additional dynamic balance ring is needed, so that the reliability of the permanent magnet motor is improved.
3. The dynamic balance adjusting method is simple and convenient.
Drawings
For a better understanding of the present invention, and to show more clearly how it may be carried into effect, reference will now be made, by way of example, to the accompanying drawings, in which:
fig. 1 is a front view of a rotor of a permanent magnet synchronous motor for a refrigeration compressor according to an embodiment of the present invention;
fig. 2 is a sectional view of a rotor of a permanent magnet synchronous motor for a refrigeration compressor according to an embodiment of the present invention;
fig. 3 is a flowchart of a method for producing a permanent magnet synchronous motor for a refrigeration compressor according to an embodiment of the present invention;
wherein,
1 … balance hole, 2 … balance nail, 3 … permanent magnet, 4 … rotor core and 5 … balance punching sheet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
An embodiment of the invention provides a permanent magnet synchronous motor rotor for a refrigeration compressor, as shown in fig. 1 and fig. 2, the permanent magnet synchronous motor rotor comprises a rotor core 4 and a permanent magnet 3, wherein the rotor core 4 is formed by stacking a plurality of punching sheets, each punching sheet comprises a common punching sheet and a balance punching sheet 5, a circle of through holes are formed in each balance punching sheet 5 and are uniformly arranged around the axis of each through hole, when the punching sheets are stacked to form the rotor core 4, the balance punching sheets 5 are placed on two sides, the common punching sheet is placed in the middle of each balance punching sheet 5 for punching, a circle of balance holes 1 with a certain depth are formed at two ends of each rotor core 4, the number of the balance punching sheets 5 is adjusted, the depth of each balance hole 1 formed in the rotor core 4 is preferably 30mm, the balance punching sheets 5 can be used completely, and the balance holes 1.
Can be at this moment attack the screw thread to balance hole 1, because permanent magnet 3 has not been placed this moment, the piece of attacking the screw thread can not adsorb on rotor core 4, has solved the puzzlement of iron fillings, saves the man-hour of getting rid of iron fillings, has reduced the risk that the compressor became invalid. After the tapping screw threads are cleaned, the permanent magnets 3 are placed, and the permanent magnets 3 are uniformly arranged around the axis of the rotor iron core 4.
Then, dynamic balance test can be carried out, the dynamic balance test can obtain the unbalance degree of the rotor, the unbalanced position and the unbalanced weight are determined, the balance nails 2 with different lengths are installed in the balance holes 1 according to the actually measured position and weight, the balance nails 2 are screws matched with the balance holes 1, the balance nails can also be elastic pins matched with the balance holes 1, the elastic pins can be inserted into the balance holes in an adjustable mode, finally, a proper amount of glue is poured into the balance holes 1, the balance nails are further prevented from falling off, the dynamic balance adjustment of the rotor adopts a screw screwing mode, components for adjusting the dynamic balance are prevented from falling off or losing efficacy, and the reliability of the permanent magnet motor is improved. The structure is simple, no additional dynamic balance ring is needed, the adjustment is convenient, the cost is low, and the device is safe and reliable.
In summary, the rotor of the permanent magnet synchronous motor for the refrigeration compressor of the present invention at least has the following advantages:
1. the rotor is simple in manufacturing process and low in cost, dynamic balance holes are reserved in the punching sheet before the permanent magnets are placed, holes do not need to be drilled in the steel sheet of the motor, the trouble of scrap iron is solved, the working time of removing the scrap iron is saved, and the risk of compressor failure is reduced.
2. The dynamic balance of the rotor adopts a mode of inserting balance nails, and no additional dynamic balance ring is needed, so that the reliability of the permanent magnet motor is improved.
Referring to fig. 3, the dynamic balance adjustment method of the permanent magnet synchronous motor for the refrigeration compressor includes the following steps:
1) in step S100, a plurality of balance holes are uniformly formed in the rotor core around the axis of the rotor core, the rotor core is formed by stacking a plurality of stamped sheets, the stamped sheets are divided into a common stamped sheet and a balance stamped sheet, a circle of through holes are formed in the balance stamped sheet, the through holes are uniformly arranged around the axis of the rotor core, when the stamped sheets are stacked to form the rotor core, the balance stamped sheets are uniformly placed on two sides for stamping, a circle of balance holes with a certain depth are formed at two ends of the rotor core, the number of the balance stamped sheets is adjusted, the depth of the balance holes formed in the rotor core is preferably 30mm, the balance stamped sheets can be used completely, and the balance holes formed in the rotor core are. Then attack the screw thread to the balancing hole, because the permanent magnet has not been placed this moment, the piece of attacking the screw thread can not adsorb on rotor core, has solved the puzzlement of iron fillings, saves the man-hour of getting rid of iron fillings, has reduced the risk that the compressor became invalid.
2) In step S101, after the tapping threads are cleaned, the permanent magnets are placed, and the permanent magnets are uniformly arranged around the axis of the rotor core.
3) In step S102, a dynamic balance test is performed, which can obtain the degree of unbalance of the rotor, and determine the position of unbalance and the weight of unbalance.
3) In step S103, balance nails of different lengths are inserted into the balance holes according to the actually measured position and weight, the balance nails are screws matched with the balance holes, the balance nails may also be elastic pins matched with the balance holes, the elastic pins can adjust the depth of insertion into the balance holes, and finally, a proper amount of glue is applied to the balance holes to further prevent the balance nails from falling off, the dynamic balance of the rotor adopts a screw-in manner to prevent the components for adjusting the dynamic balance from falling off or losing efficacy, thereby improving the reliability of the permanent magnet motor. The structure is simple, no additional dynamic balance ring is needed, the adjustment is convenient, the cost is low, and the device is safe and reliable.
In summary, the production method of the permanent magnet synchronous motor for the refrigeration compressor of the invention at least has the following advantages:
1. the dynamic balance adjusting method is simple and convenient.
2. The dynamic balance of the rotor adopts a screw-in mode, and no additional dynamic balance ring is needed, so that the reliability of the permanent magnet motor is improved.
The rotor of the invention is especially suitable for the rotor with both aluminum end ring and magnetic steel, and can perfectly solve the dynamic balance problem.
The above are merely preferred embodiments of the present invention, and are not intended to limit the scope of the invention; it is intended that the following claims be interpreted as including all such alterations, modifications, and equivalents as fall within the true spirit and scope of the invention.
Claims (9)
1. The permanent magnet synchronous motor rotor for the refrigeration compressor comprises a rotor core and permanent magnets and is characterized in that the rotor core is formed by stacking a plurality of stamped sheets, each stamped sheet comprises a common stamped sheet and a balance stamped sheet, the balance stamped sheets are arranged on two sides of the common stamped sheet, a plurality of through holes are uniformly distributed on the balance stamped sheet circumferentially around the axis of the balance stamped sheet, the through holes are stacked to form balance holes, the balance holes have a certain depth in the axial parallel direction of the rotor core, and the permanent magnets are uniformly distributed around the axis of the rotor core.
2. The rotor of permanent magnet synchronous motor for refrigerating compressor as claimed in claim 1, wherein the depth of said balancing hole is 30 mm.
3. The rotor of a permanent magnet synchronous motor for a refrigerating compressor according to claim 1 or 2, wherein a balance nail is installed in the balance hole.
4. The rotor of permanent magnet synchronous motor for refrigerating compressor as claimed in claim 3, wherein said balance hole is a screw hole.
5. The rotor of permanent magnet synchronous motor for refrigerating compressor as claimed in claim 4, wherein said balance nail is a screw matched with said screw hole.
6. The rotor of permanent magnet synchronous motor for refrigerating compressor as claimed in claim 3, wherein said balance pin is an elastic pin matched with said balance hole.
7. An electrical machine comprising a rotor according to any one of claims 1 to 6.
8. A refrigerant compressor comprising the motor of claim 7.
9. A production method of a permanent magnet synchronous motor for a refrigeration compressor is characterized by comprising the following steps:
1) uniformly forming a plurality of balance holes on the rotor core around the axis of the rotor core;
2) uniformly arranging permanent magnets around the axis of the rotor core;
3) performing dynamic balance test to determine unbalanced position and unbalanced weight;
4) and according to the test result, balance nails with different lengths are inserted into the balance holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710344898.8A CN106981939A (en) | 2017-05-16 | 2017-05-16 | Permanent-magnetic synchronous motor rotor, motor, refrigeration compressor and motor production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710344898.8A CN106981939A (en) | 2017-05-16 | 2017-05-16 | Permanent-magnetic synchronous motor rotor, motor, refrigeration compressor and motor production method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106981939A true CN106981939A (en) | 2017-07-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710344898.8A Pending CN106981939A (en) | 2017-05-16 | 2017-05-16 | Permanent-magnetic synchronous motor rotor, motor, refrigeration compressor and motor production method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106981939A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108494155A (en) * | 2018-06-14 | 2018-09-04 | 成都银河磁体股份有限公司 | A kind of dynamic balancing adjustable rotor component and processing method |
| CN109459695A (en) * | 2018-12-04 | 2019-03-12 | 宁波菲仕电机技术有限公司 | A kind of machine with natural cooling mechanism for testing |
| CN110031149A (en) * | 2019-05-08 | 2019-07-19 | 上海电气凯士比核电泵阀有限公司 | A kind of axial symmetry rotor and its dynamic balancing De-weight method removing weight structure with dynamic balancing |
| CN110994824A (en) * | 2019-12-06 | 2020-04-10 | 珠海格力电器股份有限公司 | Novel motor rotor iron core, rotor and motor |
| CN111917234A (en) * | 2020-08-10 | 2020-11-10 | 广东威灵电机制造有限公司 | Rotor dynamic balance correction method, rotor and motor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767308A (en) * | 2015-05-05 | 2015-07-08 | 湖北立锐机电有限公司 | Dynamic balancing structure for permanent magnet synchronous motor rotor |
| CN206790239U (en) * | 2017-05-16 | 2017-12-22 | 雷勃电气（苏州）有限公司 | Permanent-magnetic synchronous motor rotor, motor and refrigeration compressor |
-
2017
- 2017-05-16 CN CN201710344898.8A patent/CN106981939A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767308A (en) * | 2015-05-05 | 2015-07-08 | 湖北立锐机电有限公司 | Dynamic balancing structure for permanent magnet synchronous motor rotor |
| CN206790239U (en) * | 2017-05-16 | 2017-12-22 | 雷勃电气（苏州）有限公司 | Permanent-magnetic synchronous motor rotor, motor and refrigeration compressor |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108494155A (en) * | 2018-06-14 | 2018-09-04 | 成都银河磁体股份有限公司 | A kind of dynamic balancing adjustable rotor component and processing method |
| CN108494155B (en) * | 2018-06-14 | 2024-01-23 | 成都银河磁体股份有限公司 | Dynamic balance adjustable rotor assembly and processing method |
| CN109459695A (en) * | 2018-12-04 | 2019-03-12 | 宁波菲仕电机技术有限公司 | A kind of machine with natural cooling mechanism for testing |
| CN110031149A (en) * | 2019-05-08 | 2019-07-19 | 上海电气凯士比核电泵阀有限公司 | A kind of axial symmetry rotor and its dynamic balancing De-weight method removing weight structure with dynamic balancing |
| CN110994824A (en) * | 2019-12-06 | 2020-04-10 | 珠海格力电器股份有限公司 | Novel motor rotor iron core, rotor and motor |
| CN111917234A (en) * | 2020-08-10 | 2020-11-10 | 广东威灵电机制造有限公司 | Rotor dynamic balance correction method, rotor and motor |
| CN111917234B (en) * | 2020-08-10 | 2021-11-30 | 广东威灵电机制造有限公司 | Rotor dynamic balance correction method, rotor and motor |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170725 |
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| RJ01 | Rejection of invention patent application after publication |