CN204538834U - Rotary compressor and electric machine assembly thereof - Google Patents
Rotary compressor and electric machine assembly thereof Download PDFInfo
- Publication number
- CN204538834U CN204538834U CN201520288984.8U CN201520288984U CN204538834U CN 204538834 U CN204538834 U CN 204538834U CN 201520288984 U CN201520288984 U CN 201520288984U CN 204538834 U CN204538834 U CN 204538834U
- Authority
- CN
- China
- Prior art keywords
- rotor
- balance
- breach
- rotary compressor
- electric machine
- 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.)
- Active
Links
Landscapes
- Compressor (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model discloses a kind of rotary compressor and electric machine assembly thereof.Electric machine assembly for rotary compressor comprises rotor, and rotor is provided with the central shaft hole of through rotor vertically, and the inner peripheral surface of central shaft hole is provided with the balance breach in the crankshaft eccentric portion for balanced rotary compressor.According to electric machine assembly of the present utility model, rotor quality can be made to be biased, to offset the imbalance of whole rotary system, meet the requirement for dynamic balance of compressor rotation system.While meeting above-mentioned condition, compressor efficiency can be improved, reduce the radial vibration of compressor, reduce vibration noise.In addition, the setting of balance breach can replace the effect of balance weight, by arranging balance breach, can reduce and even avoid balance block, thus reducing costs, simplify assembly technology.
Description
Technical field
The utility model relates to compressor field, particularly relates to a kind of rotary compressor and electric machine assembly thereof.
Background technology
The bent axle of compressor rotary system and be an eccentric system by the roller of bent axle driven rotary, can cause larger vibration during rotation, therefore in traditional design, need at two ends of rotor configuration balance weight to offset mass eccentricity.But increase balance weight and not only increase cost, and design process and assembly technology want complicated a lot.
Correlation technique discloses a kind of electric machine structure, and this motor rotor carrys out balancing rotor mass eccentricity by arranging groove at iron core two ends.But the design of groove is comparatively large on the impact of motor efficiency, the more important thing is, the eccentric mass that this design can be offset is very limited.
There is the problem larger on the impact of motor efficiency in the rotor arranging groove structure at iron core two ends in correlation technique.Inventor's research and experiment find, the reason causing above-mentioned groove structure to affect motor efficiency is, the position of groove is often near magnet, the appearance of groove creates adverse effect to the distribution of iron core internal magnetic field, therefore inventor finds, rationally arranges gap position on iron core and there is appreciable impact to motor efficiency.
For this reason, the utility model aims to provide a kind of electric machine assembly for rotary compressor, and this is provided with the balance breach for offsetting mass eccentricity on the electric machine assembly of rotary compressor, and the setting of balance breach does not affect motor efficiency.
Another object of the present utility model is to provide a kind of rotary compressor with the above-mentioned electric machine assembly for rotary compressor.
According to the electric machine assembly for rotary compressor of the present utility model, comprise: rotor, described rotor is provided with the central shaft hole of through described rotor vertically, and the inner peripheral surface of described central shaft hole is provided with the balance breach in the crankshaft eccentric portion for balancing described rotary compressor.
According to the electric machine assembly for rotary compressor of the utility model embodiment, by arranging balance breach on the central shaft hole inner peripheral surface of rotor, rotor quality can be made to be biased, to offset the imbalance of whole rotary system, to meet the requirement for dynamic balance of compressor rotation system.While meeting above-mentioned condition, due to the center of the contiguous bent axle of balance breach, balance breach is interfered few to Distribution of Magnetic Field, thus can improve compressor efficiency, reduces the radial vibration of compressor, reduces vibration noise.In addition, the setting of balance breach can replace the effect of balance weight, by arranging balance breach, can reduce and even avoid balance block, thus reducing costs, simplify assembly technology.
In certain embodiments, described balance breach is at least one pair of, and the orthographic projection of two described balance breach on the end face of described rotor of every centering is symmetrical about described central shaft hole.
Particularly, described balance breach is formed in the top of described rotor and the upper surface of through described rotor; And/or described balance breach is formed in the bottom of described rotor and the lower surface of through described rotor.
Further, be 1/3 of described inner peripheral surface total height at the height axially, not arranging the described inner peripheral surface part of described balance breach of described central shaft hole.Thus avoid the very few problem causing loosening of the mating part of rotor and bent axle.
Advantageously, the ultimate range of the central axis of described balance breach and described central shaft hole is R1, and the radius of described rotor is R2, described R1≤2*R2/3.Thus avoid the excessively thin problem causing embrittlement of part that balance breach is set of rotor.
Preferably, described balance breach and described epitrochanterian magnet opening at least interval 1mm.Thus avoid balancing that part between breach and magnet opening is excessively thin causes embrittlement.
Alternatively, described balance breach is circular arc and the central angle D of correspondence meets relational expression: 0 < D≤180 °.Thus, the partial intensities that balance breach is set of rotor can be avoided too lowly to cause damage and crack etc.
In certain embodiments, the electric machine assembly for rotary compressor also comprises balance weight, and described balance weight is located on the end face of described rotor.Thus, balance weight can complex equilibrium breach to improve the dynamic balance performance of compressor rotation system further, thus reduce further the radial vibration of compressor, reduce vibration noise.
Particularly, described balance weight is located on the end face away from described balance breach of described rotor.
According to the rotary compressor of the utility model embodiment, comprise the electric machine assembly for rotary compressor according to the utility model above-described embodiment.
Additional aspect of the present utility model and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present utility model.
Utility model content
The application makes the discovery of the following fact and problem and understanding based on inventor:
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the structural representation of rotor according to the utility model embodiment and bent axle;
Fig. 2 is the structural representation of rotor according to another embodiment of the utility model and bent axle;
Fig. 3 is the plan structure schematic diagram of the rotor according to the utility model embodiment;
Fig. 4 is the structural representation of rotor according to another embodiment of the utility model and bent axle;
Fig. 5 is the structural representation of rotor according to another embodiment of the utility model and bent axle;
Fig. 6 is the radial vibration comparison diagram of rotary compressor according to the utility model embodiment and traditional compressor;
Fig. 7-9 be respectively according to the rotary compressor of the utility model embodiment and traditional compressor respectively 30,60,90rps time efficiency comparison diagram.
Reference numeral:
Electric machine assembly 100,
End face F, the upper surface F1 of the inner peripheral surface S of rotor 1, central shaft hole 10, central shaft hole, balance breach 11, rotor, lower surface F2, magnet opening 12,
Bent axle 2, crankshaft eccentric portion 21,
The ultimate range of the central axis of balance breach and central shaft hole is R1, the radius of rotor is R2, the minimum spacing L balancing breach and epitrochanterian magnet opening,
Balance weight 3.
Embodiment
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " vertically ", " level ", " top ", " end ", " interior ", " outward ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In description of the present utility model, except as otherwise noted, the implication of " multiple " is two or more.
In description of the present utility model, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.
In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature immediately below second feature and tiltedly below, or only represent that fisrt feature level height is less than second feature.
Below with reference to Fig. 1-Fig. 9, the electric machine assembly 100 for rotary compressor according to the utility model embodiment is described.
As Figure 1-Figure 5, the electric machine assembly 100 for rotary compressor according to the utility model embodiment comprises rotor 1, rotor 1 is provided with the central shaft hole 10 of through rotor 1 vertically, the inner peripheral surface S of central shaft hole 10 is provided with balance breach 11, and balance breach 11 is for the crankshaft eccentric portion 21 of balanced rotary compressor.
Particularly, as shown in Figure 1, electric machine assembly 100 also comprises bent axle 2, and bent axle 2 is engaged in central shaft hole 10 place, is with dynamic crankshaft 2 synchronous axial system when rotor 1 rotates.Bent axle 2 has crankshaft eccentric portion 21, crankshaft eccentric portion 21 matches with the roller (scheming not shown) in the compression element of rotary compressor, to drive roller eccentric rotary.
Rotor 1 arranges balance breach 11, can the eccentric rotary of balance crankshaft eccentric part 21 and roller, ensure rotor 1 and bent axle 2, stability of equilibrium that roller rotates.Wherein, balance breach 11 is located on the inner peripheral surface S of central shaft hole 10, namely the center balancing the contiguous bent axle 2 of breach 11 is arranged, making to balance breach 11 can away from the magnetic flux compact district on rotor 1, like this, the setting of balance breach 11 can not affect the magnetic field of electric machine assembly 100, thus effectively improves motor efficiency.
Inventor proves through a large amount of experiments, rotor 1 arranges balance breach 11 and has obvious advantage to the efficiency improving compressor.Specifically as shown in figs. 7 to 9,30,60 and 90rps working order under, but known compared with the compressor adopting traditional structure (as balance weight) to carry out system rotary balance substantially identical with structure, rotary compressor efficiency rotor 1 being arranged balance breach 11 is higher.
In addition, due to the center of the contiguous bent axle 2 of balance breach 11, the setting therefore balancing breach 11, compared to other balanced structures (as balance weight), can reduce vibration when rotor 1 rotates.Fig. 6 also show in a concrete example, and when balancing breach 11 and being reasonable in design, the radial vibration of the rotary compressor of the utility model embodiment can be better than traditional scheme not arranging the compressor of balance breach 11.
According to the electric machine assembly 100 for rotary compressor of the utility model embodiment, by arranging balance breach 11 on the inner peripheral surface S of central shaft hole 10, rotor 1 mass offset can be made, thus offset the imbalance of whole rotary system, meet the requirement for dynamic balance of compressor rotation system.While meeting above-mentioned condition, due to the center of the contiguous bent axle 2 of balance breach 11, balance breach 11 pairs of Distribution of Magnetic Field are interfered few, thus can improve compressor efficiency, reduce the radial vibration of compressor, reduce vibration noise.In addition, the setting of balance breach 11 can replace the effect of balance weight 3, by arranging balance breach 11, can reduce and even avoid balance block 3, thus reducing costs, simplify assembly technology.
Particularly, rotor 1 can be arranged a balance breach 11, rotor 1 also can arrange multiple balance breach 11.When rotor 1 is provided with multiple balance breach 11, multiple balance breach 11 can be uniformly distributed in pairs, also can stragglyly distribute.Such as, multiple balance breach 11 can axially spaced apart at rotor 1, and multiple balance breach 11 also can be distributed on same axial height, and also may the part of multiple balance breach 11 be positioned on same axial height, another part is staggered.Here concrete restriction is not done to the balance number of breach 11, shape and position, if balance breach 11 the requirement for dynamic balance meeting compressor rotation system is set.
In certain embodiments, as depicted in figs. 1 and 2, balance breach 11 is at least one pair of, and two orthographic projections of balance breach 11 on the end face F of rotor 1 of every centering are symmetrical about central shaft hole 10.That is, in a pair balance breach 11, the orthographic projection of balance breach 11 on the end face F of rotor 1 and the central axis PP ' Central Symmetry of the orthographic projection relative centre axis hole 10 of another balance breach 11 on the end face F of rotor 1.
Alternatively, two of every centering balance breach 11 at rotor 1 axially separately, in example as depicted in figs. 1 and 2, rotor 1 is provided with two balance breach 11, the upper surface F1 of one of them balance breach 11 adjacent rotor 1 is arranged, and the lower surface F2 of another balance breach 11 adjacent rotor 1 is arranged.
Further, at central shaft hole 10 axially, the height not arranging the inner peripheral surface part of balance breach 11 is 1/3 of inner peripheral surface S total height, that is, all balance breach 11 taking on rotor 1 is highly no more than 2/3rds of rotor 1 total height, as in the example of Fig. 1 and Fig. 2, two balance breach 11 are arranged at the axially interval of rotor 1, the axial dimension of one of them balance breach 11 is H1, the axial dimension of another balance breach 11 is H2, the axial overall size of rotor 1 is H, then (H1+H2)≤2*H/3.
Thus ensure that the inner peripheral surface S of rotor 1 has abundant part to coordinate with bent axle 2, avoid the very few problem causing loosening of mating part of rotor 1 and bent axle 2.
In certain embodiments, as shown in Figure 1, balance breach 11 can be located between the upper surface F1 of rotor 1 and lower surface F2, and that is, balance breach 11 is being closed towards upper and lower both direction.
In further embodiments, as shown in Figure 2, balance breach 11 and can be formed in the top of rotor 1 and the upper surface F1 of through rotor 1, i.e. this balance breach 11 upper opening.Balance breach 11 also can be formed in the bottom of rotor 1 and the lower surface F2 of through rotor 1, i.e. this balance breach 11 lower opening.Balance breach 11 also can comprise multiple, and as shown in Figure 2, wherein partial equilibrium breach 11 is formed in the top of rotor 1 and the upper surface F1 of through rotor 1, also has partial equilibrium breach 11 to be formed in the bottom of rotor 1 and the lower surface F2 of through rotor 1.
Advantageously, balance breach 11 is R1 with the ultimate range of the central axis PP ' of central shaft hole 10, the radius of rotor 1 is R2, R1≤2*R2/3, that is, balance breach 11 is no more than 2/3rds of the radius of rotor 1 near the distance between the point of rotor 1 periphery and the central axis PP ' of central shaft hole 10, thus avoids the excessively thin problem causing embrittlement of part that balance breach 11 is set of rotor 1.
Preferably, as shown in Figure 1, the magnet opening 12 at least interval 1mm on breach 11 and rotor 1 is balanced, that is, minimum spacing L >=the 1mm of balance breach 11 and the magnet opening 12 on rotor 1, thus avoid balancing that part between breach 11 and magnet opening 12 is excessively thin causes embrittlement.
Alternatively, as shown in Figure 3, balance breach 11 is circular arc, central angle D corresponding to this circular arc meets relational expression: 0 < D≤180 °, namely balance breach 11 angle in the circumferential and be not more than 180 degree, thus, the partial intensities that rotor 1 can be avoided to arrange balance breach 11 too lowly causes damage and crack etc.
In certain embodiments, as shown in Figure 4 and Figure 5, the electric machine assembly 100 for rotary compressor also comprises balance weight 3, and balance weight 3 is located on the end face F of rotor 1.Like this, balance weight 3 can complex equilibrium breach 11 to improve the dynamic balance performance of compressor rotation system further, thus reduce further the radial vibration of compressor, reduce vibration noise.
Particularly, balance weight 3 is located on the end face F of the far from equilibrium breach 11 of rotor 1.Advantageously, balance weight 3 and the orthographic projection of balance breach 11 on the end face F of rotor 1 overlap.
In the example depicted in fig. 4, balance breach 11 is formed in the top of rotor 1, and balance weight 3 is located on the lower surface F2 of rotor 1, and in the example depicted in fig. 5, balance breach 11 is formed in the bottom of rotor 1, and balance weight 3 is located on the upper surface F1 of rotor 1.
Certainly, for improving the dynamic balance performance of compressor rotation system, balance weight 3 and balance breach 11 can be arranged by other arrangement modes, do not do concrete restriction here.
According to the rotary compressor of the utility model embodiment, comprise the electric machine assembly 100 for rotary compressor according to the utility model above-described embodiment.
Owing to being provided with above-mentioned electric machine assembly 100, namely balance breach 11 being set on the inner peripheral surface S of the central shaft hole 10 of rotor 1, thus compressor efficiency can be improved, reduce the radial vibration of compressor, reduce vibration noise.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present utility model and aim, scope of the present utility model is by claim and equivalents thereof.
Claims (10)
1. the electric machine assembly for rotary compressor, it is characterized in that, comprise: rotor, described rotor is provided with the central shaft hole of through described rotor vertically, and the inner peripheral surface of described central shaft hole is provided with the balance breach in the crankshaft eccentric portion for balancing described rotary compressor.
2. the electric machine assembly for rotary compressor according to claim 1, is characterized in that, described balance breach is at least one pair of, and the orthographic projection of two described balance breach on the end face of described rotor of every centering is symmetrical about described central shaft hole.
3. the electric machine assembly for rotary compressor according to claim 1, is characterized in that, described balance breach is formed in the top of described rotor and the upper surface of through described rotor; And/or
Described balance breach is formed in the bottom of described rotor and the lower surface of through described rotor.
4. the electric machine assembly for rotary compressor according to claim 3, is characterized in that, is 1/3 of described inner peripheral surface total height at the height axially, not arranging the described inner peripheral surface part of described balance breach of described central shaft hole.
5. the electric machine assembly for rotary compressor according to claim 1, is characterized in that, the ultimate range of the central axis of described balance breach and described central shaft hole is R1, and the radius of described rotor is R2, described R1≤2*R2/3.
6. the electric machine assembly for rotary compressor according to claim 1, is characterized in that, described balance breach and described epitrochanterian magnet opening at least interval 1mm.
7. the electric machine assembly for rotary compressor according to claim 1, is characterized in that, described balance breach is circular arc and the central angle D of correspondence meets relational expression: 0 < D≤180 °.
8. the electric machine assembly for rotary compressor according to claim 1, is characterized in that, also comprise balance weight, and described balance weight is located on the end face of described rotor.
9. the electric machine assembly for rotary compressor according to claim 8, is characterized in that, described balance weight is located on the end face away from described balance breach of described rotor.
10. a rotary compressor, is characterized in that, comprises the electric machine assembly for rotary compressor according to any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520288984.8U CN204538834U (en) | 2015-05-06 | 2015-05-06 | Rotary compressor and electric machine assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520288984.8U CN204538834U (en) | 2015-05-06 | 2015-05-06 | Rotary compressor and electric machine assembly thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204538834U true CN204538834U (en) | 2015-08-05 |
Family
ID=53752792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520288984.8U Active CN204538834U (en) | 2015-05-06 | 2015-05-06 | Rotary compressor and electric machine assembly thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204538834U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110873052A (en) * | 2018-08-30 | 2020-03-10 | 广东美芝制冷设备有限公司 | Compressor with a compressor housing having a plurality of compressor blades |
-
2015
- 2015-05-06 CN CN201520288984.8U patent/CN204538834U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110873052A (en) * | 2018-08-30 | 2020-03-10 | 广东美芝制冷设备有限公司 | Compressor with a compressor housing having a plurality of compressor blades |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11349360B2 (en) | Motor | |
| JP5971114B2 (en) | Permanent magnet embedded rotary electric machine | |
| CN104300710B (en) | Rotor, interior permanent magnet machines and compressor | |
| CN104348268A (en) | Single-phase brushless motor | |
| WO2014183408A1 (en) | Permanent magnet motor | |
| CN104269986A (en) | Permanent magnet synchronous motor and compressor provided with same | |
| CN101098088A (en) | Blocked internal stator and brushless permanent magnet motor equipped with the same | |
| US20150042200A1 (en) | Rotor of built-in permanent magnet motor and built-in permanent magnet motor using same | |
| CN104682650A (en) | Motor rotor and brushless motor with motor rotor | |
| CN106533000A (en) | Single-phase permanent magnet motor | |
| CN106532999A (en) | Single-phase permanent magnet motor | |
| CN204538834U (en) | Rotary compressor and electric machine assembly thereof | |
| CN204145092U (en) | Stator module and the plastic packaging motor with it | |
| KR101382599B1 (en) | Dual-rotor motor | |
| CN203967937U (en) | The compressor with external rotor electric machine | |
| CN204652098U (en) | Motor | |
| CN106487186A (en) | Electric machine | |
| CN205195443U (en) | Single -Phase permanent -Magnet motor | |
| CN203942355U (en) | The plastic packaging motor of a kind of embedded rotor and application thereof | |
| CN204992809U (en) | Single -Phase permanent -Magnet motor and use hair -dryer of this motor | |
| CN202405895U (en) | Outer rotor permanent magnet motor rotor structure | |
| CN205195522U (en) | Single -Phase permanent -Magnet motor | |
| CN103912498B (en) | Rotary compressor | |
| CN107834717A (en) | Motor | |
| CN205195528U (en) | Single -phase brushless motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |