CN202197155U - Speed regulation permanent magnet synchronous motor rotor for refrigeration frequency conversion compressor - Google Patents
Speed regulation permanent magnet synchronous motor rotor for refrigeration frequency conversion compressor Download PDFInfo
- Publication number
- CN202197155U CN202197155U CN2011203329563U CN201120332956U CN202197155U CN 202197155 U CN202197155 U CN 202197155U CN 2011203329563 U CN2011203329563 U CN 2011203329563U CN 201120332956 U CN201120332956 U CN 201120332956U CN 202197155 U CN202197155 U CN 202197155U
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- China
- Prior art keywords
- rotor
- synchronous motor
- eccentric shaft
- balancing block
- balance weight
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- Expired - Fee Related
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- Iron Core Of Rotating Electric Machines (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model discloses a speed regulation permanent magnet synchronous motor rotor for a refrigeration frequency conversion compressor, which comprises a driving eccentric shaft, a rotor iron core sleeved outside the driving eccentric shaft, an upper balancing block and a lower balancing block, wherein the upper balancing block and the lower balancing block are arranged at the top end and the bottom end of the rotor iron core respectively. The rotor iron core is formed by overlaying a plurality of rotor punching sheets, shaft holes for the driving eccentric shaft to be sleeved in are arranged at the centers of the rotor punching sheets, a plurality of permanent magnet holes are arranged on outer rings of the shaft holes arranged on the rotor punching sheets, one or a plurality of hollow holes is/are arranged on the rotor punching sheets, and the hollow holes and the upper balancing block are not overlapped in the vertical direction. The speed regulation permanent magnet synchronous motor rotor for the refrigeration frequency conversion compressor is simple in structure, and balances eccentric force generated by the driving eccentric shaft through the design of the hollow holes, thereby being capable of reducing force of the upper balancing block, namely reducing weight of the upper balancing block, and reducing inner space of the compressor and rotational inertia of a rotor component.
Description
Technical field
The utility model relates to a kind of refrigeration frequency-changeable compressor field, specifically is that a kind of refrigeration frequency-changeable compressor is used the speed governing permanent-magnetic synchronous motor rotor.
Background technology
Be that reciprocating type, rotary-piston or swirl type cold compressor (contain and decide frequency, frequency-changeable compressor) compression pump driving shaft structure all are to drive eccentric shaft structure; Can produce eccentric out-of-balance force in the running and cause vibration of compressor; In order to reduce vibration; Can be employed in and balance weight is installed on the rotor core that drives the outer suit of eccentric shaft or come the balance eccentric force at the inner parts with active balance effect of installing of compressor, generally speaking compressor refrigerating capacity is big more, and offset is just big more; Required balance weight quality is also big, and compressor arrangement and material cost are brought certain increase.Refrigerant compressor all is copper alloy, kirsite and nonmagnetic steel alloy with the balance weight material mostly, and cost is comparatively high.Compressor arrangement design simultaneously and assembling factor, balance weight all is mounted on the rotor, and compressor arrangement has been proposed the requirement on the space, and exploitation brings certain influence to the compressor arrangement densification.Along with energy shortage, energy-saving and emission-reduction, developing efficient frequency-changeable compressor becomes the market mainstream, and refrigeration frequency-changeable compressor widespread usage speed governing permagnetic synchronous motor is as driving power device.The rotor of speed governing permagnetic synchronous motor generally uses embedded rare earth magnet as excitation source, and this construction rotor produces the first-harmonic iron loss hardly.Patent 200610146772.1 is utilized toward rotor openwork part filling non-magnet material and is realized the rotor dynamic balance, and reduces reciprocating compressor compressor height, reduces part assembling and manufacturing cost.Well-known rotor magnetic circuit carrier is a silicon steel; This density of material 7.6-7.85g/cm3 describes needs according to this patent and uses the density non-magnet material bigger than silicon steel to fill, and the common material that can bear economically is metallic copper (density 8.9g/cm3); Stainless steel (density 7.9-8.0g/cm3); But its cost is high, and quality is big, installs inconvenient.
The utility model content
The utility model discloses a kind of refrigeration frequency-changeable compressor and use the speed governing permanent-magnetic synchronous motor rotor, solution existing structure structure solution rotor dynamic equilibrium problem complex structure, the problem that cost is high.
The technical scheme of the utility model is:
A kind of refrigeration frequency-changeable compressor is used the speed governing permanent-magnetic synchronous motor rotor; Comprise and drive the outer rotor core of eccentric shaft, suit and driving eccentric shaft, be arranged at the last balance weight and the following balance weight of rotor core top and bottom respectively; Described rotor core is to form by a plurality of rotor punchings are stacked; The center of rotor punching is provided with the outer ring that is positioned at axis hole on axis hole that suit drives eccentric shaft, the rotor punching and is provided with a plurality of permanent magnetism hole; Described rotor punching is provided with one or more hollow holes, and hollow hole and last balance weight in the vertical direction are not overlapping.
Described hollow hole is arranged between axis hole and the permanent magnetism hole.
The orthographic projection and the center of hollow hole of the said center of gravity that goes up balance weight to the rotor punching becomes 180 to spend central angles.
The size of described hollow hole, position, quantity and the degree of depth change according to the variation of last balance weight and following balance weight weight and installation site.
The advantage of the utility model:
The eccentric force that the utility model adopts hollow hole when rotor turns round, to produce comes balance to drive the eccentric force that eccentric shaft produces, and the eccentric force that balance weight produces is gone up in relative just can reducing when rotor turns round, reduce the compressor volume inside; And because rotor core part hollow out; The rotor core quality descends; And because the weight of rotor part is by rotor core, upper and lower balance weight and drives eccentric shaft weight together; So the total quality of rotor part descends, the moment of inertia of rotating parts reduces, thereby has improved frequency-changeable compressor operation control response precision.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the structural representation of the utility model rotor punching.
Fig. 3 is the structural representation of the utility model rotor core.
Fig. 4 is the force analysis figure of the utility model.
Embodiment
See Fig. 1; A kind of refrigeration frequency-changeable compressor is used the speed governing permanent-magnetic synchronous motor rotor; Comprise driving the outer rotor core 2 of eccentric shaft 1, suit and driving eccentric shaft 1, being arranged at the last balance weight 3 and the following balance weight 4 of rotor core 2 tops and bottom respectively that rotor core is by a plurality of rotor punching 5 stacked (see figure 3)s that form; See Fig. 2; The center of rotor punching 5 is provided with the outer ring that is positioned at axis hole 6 on axis hole 6 that suit drives eccentric shaft 1, the rotor punching 5 and is provided with four permanent magnetism holes 7; Between axis hole 6 and permanent magnetism hole 7, be provided with six hollow holes 8 on the rotor punching; And orthographic projection and the center of six hollow holes 8 of the center of gravity of last balance weight 3 to the rotor punching 5 becomes 180 degree central angles.
See Fig. 4; F1 is that frequency-changeable compressor drives the eccentric force that eccentric shaft 1 eccentric part produces in the running; F2 is the eccentric force that balance weight 3 produces in the running on the frequency-changeable compressor, and F3 is the eccentric force that balance weight 4 produces in the running under the frequency-changeable compressor, and F4 is the eccentric force that DC frequency-changeable compressor rotor hollow hole 8 produces in the running; Make a concerted effort and resultant moment is zero principle according to rotor is suffered, draw following formula:
Because F1, F3, L1, L2, L3, L4 are definite value, when the size and the quantity of the hollow hole 8 that is provided with satisfies F4 when enough big, the size of F2 reduces thereupon accordingly, and as F4=F1+F3, F2 is zero, can omit balance weight.When last balance weight quality decline, the rotor part total quality further descends, and the moment of inertia of rotor part further reduces.
Claims (3)
1. a refrigeration frequency-changeable compressor is used the speed governing permanent-magnetic synchronous motor rotor; Comprise and drive the outer rotor core of eccentric shaft, suit and driving eccentric shaft, be arranged at the last balance weight and the following balance weight of rotor core top and bottom respectively; Described rotor core is to form by a plurality of rotor punchings are stacked; The center of rotor punching is provided with the outer ring that is positioned at axis hole on axis hole that suit drives eccentric shaft, the rotor punching and is provided with a plurality of permanent magnetism hole; It is characterized in that: described rotor punching is provided with one or more hollow holes, and hollow hole and last balance weight in the vertical direction are not overlapping.
2. a kind of refrigeration frequency-changeable compressor according to claim 1 is used the speed governing permanent-magnetic synchronous motor rotor, it is characterized in that: described hollow hole is arranged between axis hole and the permanent magnetism hole.
3. a kind of refrigeration frequency-changeable compressor according to claim 1 is used the speed governing permanent-magnetic synchronous motor rotor, it is characterized in that: the orthographic projection and the center of hollow hole of the said center of gravity that goes up balance weight to the rotor punching becomes 180 to spend central angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203329563U CN202197155U (en) | 2011-09-07 | 2011-09-07 | Speed regulation permanent magnet synchronous motor rotor for refrigeration frequency conversion compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203329563U CN202197155U (en) | 2011-09-07 | 2011-09-07 | Speed regulation permanent magnet synchronous motor rotor for refrigeration frequency conversion compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202197155U true CN202197155U (en) | 2012-04-18 |
Family
ID=45952054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203329563U Expired - Fee Related CN202197155U (en) | 2011-09-07 | 2011-09-07 | Speed regulation permanent magnet synchronous motor rotor for refrigeration frequency conversion compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202197155U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103795162A (en) * | 2012-10-30 | 2014-05-14 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor and double-roller compressor having the same |
| CN107061269A (en) * | 2017-06-12 | 2017-08-18 | 美的集团股份有限公司 | Screw compressor |
-
2011
- 2011-09-07 CN CN2011203329563U patent/CN202197155U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103795162A (en) * | 2012-10-30 | 2014-05-14 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor and double-roller compressor having the same |
| CN103795162B (en) * | 2012-10-30 | 2015-11-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor and there are two roller compressor of this motor |
| CN107061269A (en) * | 2017-06-12 | 2017-08-18 | 美的集团股份有限公司 | Screw compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120418 Termination date: 20120907 |