CN105048744A - Cast copper rotor for variable frequency motor - Google Patents
Cast copper rotor for variable frequency motor Download PDFInfo
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- CN105048744A CN105048744A CN201510424095.4A CN201510424095A CN105048744A CN 105048744 A CN105048744 A CN 105048744A CN 201510424095 A CN201510424095 A CN 201510424095A CN 105048744 A CN105048744 A CN 105048744A
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- rotor
- copper
- sliver
- cast copper
- rotor core
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Abstract
The invention discloses a cast copper rotor for a variable frequency motor. A rotor core (5) of the rotor is formed by overlapping of a certain quantity of rotor sheets (1) of the same sizes and shapes; the rotor sheets (1) are of circular hollow structures, and the central parts are shaft holes (3) for mounting a motor revolving shaft; a certain quantity of closed conducting bar holes (2) are uniformly distributed in the circumferences of the rotor sheets (1); the conducting bar holes (2) are of reverse trapezoidal structures being wider on upper parts and narrower on lower parts; the conducting bar holes (3) in the rotor sheets (1) form conducting bar grooves in the rotor core (5) after overlapping; and melted copper is filled into the conducting bar grooves in a one-to-one correspondence manner, and integrated with cast copper end rings (4) which are firmly bonded at the two ends of the rotor core (5), thereby constructing a cast copper mouse cage structure of the rotor.
Description
Technical field
The present invention relates to a kind of variable-frequency motor copper casting rotor.
Background technology
Day by day deficient along with the energy, the task that energy-saving and cost-reducing of becoming that current international social development faces is very urgent.Develop ultra high efficiency electric motor system to ensureing that making full use of with sustainable development of China's energy is significant.
In the reduction loss of electric machine, copper compared with aluminium there is good conductivity, copper casting rotor take copper as the Novel motor rotor of conductive matrices, utilizes the electric conductivity of copper excellence, can reduce rotor loss, improves motor efficiency.Although but power frequency copper casting rotor motor is significantly improved in efficiency, its starting current becomes large, and detent torque diminishes, sometimes even beyond the range of tolerable variance of asynchronous machine design standard.
From the control mode of motor, frequency-conversion and speed-regulation motor, because its structure is simple, easily manufactured, cheap, sturdy and durable, reliable, safeguard the advantages such as simple, has been widely used in each field of modern industry.But variable frequency regulating speed control mode makes containing a large amount of high order harmonic components in feeding electric motors voltage, and the loss of electric machine can be caused to increase, and is wherein rotor loss the most significantly.
Summary of the invention
The object of the invention is to overcome the shortcoming that the torque of existing copper casting rotor electric motor starting is little, variable-frequency motor rotor loss is large, propose that a kind of efficiency is high, the copper casting rotor of good reliability, frequency conversion superior performance.
For achieving the above object, the present invention adopts following scheme:
Frequency control motor copper casting rotor of the present invention is made up of rotor core and cast copper mouse cage, and the cast copper sliver of cage-shaped structure is positioned at the sliver groove of rotor core, and the cast copper end ring of cage-shaped structure is positioned at the both sides of rotor core, and with rotor core close contact.
The rotor lamellar body that described rotor core is identical by multi-disc size, shape is identical is overrided to form.Rotor lamellar body is circumferentially evenly distributed with the sliver hole of remaining silent of some, described sliver hole adopts inverted trapezoidal structure wide at the top and narrow at the bottom.
Operation principle of the present invention and the course of work are:
Rotor of the present invention is applied to frequency control motor.Adopt variable frequency regulating speed control mode during electric motor starting, rotor current and detent torque increase from zero gradually steadily along with electric machine frequency, until enter rated operation, thus effectively avoid the problem that the starting current of existing copper casting rotor is large, detent torque is little.
Beneficial effect of the present invention is:
1, the rotor of existing frequency control motor also exists obviously not enough in the response of different frequency range, and rotor resistance presents the linear trend increased along with the raising of frequency, and this makes motor serious in high band heating.Variable-frequency motor copper casting rotor of the present invention, utilize distinctive inverted trapezoidal cast copper sliver, play the resistance characteristic of its excellence at low frequency or high band, rotor resistance is lower, thus reduces rotor loss, improves electric efficiency; Play its superior conductive characteristic at Mid Frequency or specified frequency range, rotor resistance is higher, thus increases motor torque square, improves the runnability of motor.
2, existing rotor mostly is dark and narrow sliver pore structure, is subject to the impact of kelvin effect, and when alternating current is by conductor, electric current will concentrate on conductive surface, and rotor bar utilance is low, and heating is serious.The present invention utilizes the inverted trapezoidal structure wide at the top and narrow at the bottom of slot shape of rotor, rotor current can be made more to be evenly distributed in whole sliver sectional area, effectively to reduce kelvin effect to the impact of variable-frequency motor rotor bar electric current, improve rotor bar utilance, reduce rotor loss, improve electric efficiency.
Accompanying drawing explanation
Fig. 1 is the front portion sectional structure schematic diagram of variable-frequency motor copper casting rotor of the present invention, in figure: 1 rotor lamellar body, 2 sliver holes, 3 axis holes, 4 cast copper end ring, 5 rotor cores.
Fig. 2 is the side, sectional structural representation intention of variable-frequency motor copper casting rotor of the present invention, in figure: 3 axis holes, 4 cast copper end ring, 5 rotor cores, 6 cast copper slivers.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
As shown in Figure 1 or 2, the rotor lamellar body 1 that rotor core 5 is identical by multi-disc size, shape is identical is overrided to form.The center hole structure of rotor lamellar body 1 laminates the axis hole 3 of rear formation for mounted motor rotating shaft.The even circumferential of rotor lamellar body 1 is distributed with the sliver hole 2 of remaining silent of some, and sliver hole 2 is inverted trapezoidal structure wide at the top and narrow at the bottom, laminates rear formation for pouring into the sliver groove of cast copper sliver 6.The quantity in sliver hole 2 is determined according to using the performance requirement of variable-frequency motor of the present invention, and the present embodiment is 26.
Cast copper sliver 6 and cast copper end ring 4 die casting form an overall cast copper mouse cage.Cast copper sliver 6 is poured in the sliver groove of rotor core 5, and the quantity of cast copper sliver 6 is identical with the quantity in sliver hole 2, and the present embodiment is 26.Cast copper end ring 4 lays respectively at the two ends of rotor core 5, and with rotor core 5 close contact.
Claims (4)
1. a variable-frequency motor copper casting rotor, is characterized in that, described copper casting rotor is made up of rotor core (5) and cast copper mouse cage; The cast copper sliver of described cage-shaped structure is positioned at the sliver groove of rotor core (5), and the cast copper end ring (4) of cage-shaped structure is positioned at the both sides of rotor core (5), and with rotor core (5) close contact.
2. copper casting rotor according to claim 1, is characterized in that, the described rotor lamellar body (1) that rotor core (5) is identical by multi-disc size, shape is identical is overrided to form; Described rotor lamellar body (1) is circular hollow structure, and rotor lamellar body (1) is circumferentially evenly distributed with sliver hole (2) of remaining silent.
3. copper casting rotor according to claim 1, is characterized in that, described sliver hole (2) adopts inverted trapezoidal structure wide at the top and narrow at the bottom.
4. the copper casting rotor according to claim 1 or 2 or 3, it is characterized in that: cast copper sliver (6) and cast copper end ring (4) die casting of described cast copper mouse cage connect into an entirety, cast copper sliver (6) is poured in the sliver groove of rotor core (5), and the quantity of cast copper sliver (6) is identical with the quantity of sliver hole (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510424095.4A CN105048744A (en) | 2015-07-17 | 2015-07-17 | Cast copper rotor for variable frequency motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510424095.4A CN105048744A (en) | 2015-07-17 | 2015-07-17 | Cast copper rotor for variable frequency motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105048744A true CN105048744A (en) | 2015-11-11 |
Family
ID=54455037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510424095.4A Pending CN105048744A (en) | 2015-07-17 | 2015-07-17 | Cast copper rotor for variable frequency motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105048744A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471138A (en) * | 2015-12-28 | 2016-04-06 | 天津中科华瑞电气技术开发有限公司 | Rotor for submerged motor |
| CN105576864A (en) * | 2016-01-22 | 2016-05-11 | 沈阳兴华航空电器有限责任公司 | Intermediate-frequency asynchronous motor |
| CN106787552A (en) * | 2017-02-28 | 2017-05-31 | 常州市裕成富通电机有限公司 | A kind of copper casting rotor induction machine |
| CN107086684A (en) * | 2017-06-29 | 2017-08-22 | 广东美芝精密制造有限公司 | Rotor and its manufacture method, rotary compressor and air-conditioning |
| CN107511469A (en) * | 2017-10-13 | 2017-12-26 | 安阳恒安电机有限公司 | A kind of squirrel cage motor rotor low pressure cast copper equipment, cast copper and its cast copper method |
| CN107591916A (en) * | 2017-10-28 | 2018-01-16 | 泰州市姜堰德力电机有限公司 | The copper casting rotor and its processing technology of a kind of motor |
| CN109724728A (en) * | 2018-12-27 | 2019-05-07 | 中国科学院电工研究所 | A kind of non-contact torque measuring device with speed changing function |
| CN113098163A (en) * | 2021-04-19 | 2021-07-09 | 云南铜业压铸科技有限公司 | Cast copper rotor for high-rotation-speed motor and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61224840A (en) * | 1985-03-29 | 1986-10-06 | Hitachi Ltd | Manufacture of electromagnetic member |
| CN102437697A (en) * | 2011-10-31 | 2012-05-02 | 南阳防爆集团股份有限公司 | Copper casting rotor |
| CN204205761U (en) * | 2014-10-02 | 2015-03-11 | 青岛纺织机械股份有限公司 | A kind of novel switched reluctance motor rotor punching |
| CN204349618U (en) * | 2014-12-09 | 2015-05-20 | 江苏爱尔玛科技有限公司 | A kind of high performance permanent magnetic synchronous motor rotor and apply the rotor punching of this rotor |
-
2015
- 2015-07-17 CN CN201510424095.4A patent/CN105048744A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61224840A (en) * | 1985-03-29 | 1986-10-06 | Hitachi Ltd | Manufacture of electromagnetic member |
| CN102437697A (en) * | 2011-10-31 | 2012-05-02 | 南阳防爆集团股份有限公司 | Copper casting rotor |
| CN204205761U (en) * | 2014-10-02 | 2015-03-11 | 青岛纺织机械股份有限公司 | A kind of novel switched reluctance motor rotor punching |
| CN204349618U (en) * | 2014-12-09 | 2015-05-20 | 江苏爱尔玛科技有限公司 | A kind of high performance permanent magnetic synchronous motor rotor and apply the rotor punching of this rotor |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471138A (en) * | 2015-12-28 | 2016-04-06 | 天津中科华瑞电气技术开发有限公司 | Rotor for submerged motor |
| CN105576864A (en) * | 2016-01-22 | 2016-05-11 | 沈阳兴华航空电器有限责任公司 | Intermediate-frequency asynchronous motor |
| CN106787552A (en) * | 2017-02-28 | 2017-05-31 | 常州市裕成富通电机有限公司 | A kind of copper casting rotor induction machine |
| CN107086684A (en) * | 2017-06-29 | 2017-08-22 | 广东美芝精密制造有限公司 | Rotor and its manufacture method, rotary compressor and air-conditioning |
| CN107086684B (en) * | 2017-06-29 | 2023-04-25 | 广东美芝精密制造有限公司 | Rotor, manufacturing method thereof, rotary compressor and air conditioner |
| CN107511469A (en) * | 2017-10-13 | 2017-12-26 | 安阳恒安电机有限公司 | A kind of squirrel cage motor rotor low pressure cast copper equipment, cast copper and its cast copper method |
| CN107591916A (en) * | 2017-10-28 | 2018-01-16 | 泰州市姜堰德力电机有限公司 | The copper casting rotor and its processing technology of a kind of motor |
| CN107591916B (en) * | 2017-10-28 | 2023-05-30 | 德力电机有限公司 | Cast copper rotor of motor and processing technology thereof |
| CN109724728A (en) * | 2018-12-27 | 2019-05-07 | 中国科学院电工研究所 | A kind of non-contact torque measuring device with speed changing function |
| CN113098163A (en) * | 2021-04-19 | 2021-07-09 | 云南铜业压铸科技有限公司 | Cast copper rotor for high-rotation-speed motor and preparation method thereof |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151111 |