CN110247506A - Rotor and its balance weight and compressor - Google Patents
Rotor and its balance weight and compressor Download PDFInfo
- Publication number
- CN110247506A CN110247506A CN201810195340.2A CN201810195340A CN110247506A CN 110247506 A CN110247506 A CN 110247506A CN 201810195340 A CN201810195340 A CN 201810195340A CN 110247506 A CN110247506 A CN 110247506A
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- China
- Prior art keywords
- face
- balance weight
- rotor
- windward side
- pit
- 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.)
- Pending
Links
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 6
- 230000003746 surface roughness Effects 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 3
- 230000003111 delayed effect Effects 0.000 description 9
- 230000001737 promoting effect Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/04—Balancing means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention provides a kind of rotor and its balance weight and compressor, balance weight therein has windward side, and the windward side is equipped with pit, since pit can increase the surface roughness of windward side, therefore, in rotor operational process, it will form " golf effect " on the windward side of the balance weight, so that the air-flow by windward side turns to twist turbulent flow in advance, thus, airflow diversion suffered by balance weight is reduced, so that pressure drag suffered by balance weight reduces, reduce aerodynamic drag suffered by rotor also accordingly, so, the suffered influence from aerodynamic drag is also reduced when rotor operation, stability of the frequency-changeable compressor in low speed operation can be improved with this.
Description
Technical field
The present invention relates to compressor, in particular to a kind of rotor and its balance weight.
Background technique
Core component of the rotor as compressor when rotating, in order to make it keep the balance of various aspects, needs
The end of rotor is installed by balance weight.
Fig. 1 a and Fig. 1 b provide a kind of balance weight of rotor, the balance weight in semi-circular shape and have the face A 01,
The face B 02 and the face C 03, wherein the face A 01 and the face B 02 are two opposite end faces, and the face C 03 be the periphery for abutting the face A 01 and the face B 02
Face.In practice, when the balance weight is rotated clockwise with rotor along the direction arrow S1, the face B 02 and the face C 03 are windward side
And will receive aerodynamic drag, and the face A 01 is leeward；But when the balance weight with rotor along the arrow S2 direction inverse time
When needle rotates, the face A 01 and the face C 03 are that windward side will be by aerodynamic drag, while the face B 02 is leeward.
Inventors have found that with the increase of rotor revolving speed, aerodynamic drag suffered by the face A 01 or the face B 02 is also therewith
It increases, this is unfavorable for the normal operation of rotor, for example, will affect static and dynamic equilibrium when rotor operation, especially can also
Influence the stability when operation of frequency-changeable compressor low speed.
Summary of the invention
The purpose of the present invention is to provide a kind of rotor and its balance weights and compressor, by the flat of rotor
Pit is set on the windward side of weighing apparatus block, helps to reduce the influence that aerodynamic drag runs rotor, but also can be improved
Stability when frequency-changeable compressor low speed is run.
According to an aspect of the present invention, a kind of balance weight of rotor is provided, the balance weight has windward side,
And the windward side is equipped with pit.
According to another aspect of the present invention, a kind of rotor is provided, an end face of the rotor is equipped with described
Balance weight.
According to another aspect of the invention, a kind of compressor is provided, it is described including rotor and the balance weight
Balance weight is set to an end face of the rotor.
Preferably, the pit is multiple, and multiple pits are evenly distributed on the windward side.
Preferably, the diameter of the pit is between 2mm~4mm.
Preferably, the balance weight is annular in shape.
Preferably, the balance weight has opposite first end face and second end face, the first end face and described second
One in end face is windward side, another in the first end face and the second end face is leeward；Wherein, described
The pit is set in first end face and/or the second end face.
Preferably, the balance weight also has a lateral surface, the lateral surface and the first end face and the second end
Face is adjacent and is a windward side；Wherein, institute is set in the lateral surface, the first end face and/or the second end face
State pit.
Preferably, the balance weight is annular in shape.
According to the technique and scheme of the present invention, when rotor rotate when, rotor with reuse balance weight windward
Air-flow can be generated on face, when air-flow does not shunt, because air-flow stagnation pressure consumed by boundary layer is less than windward side in leeward, therefore
Form pressure drag, but its value is smaller, and almost all is frictional resistance, but when rotor revolving speed increases, pressure drag also with
Increase.For this purpose, increase the surface roughness of windward side by the way that pit is arranged on the windward side of balance weight of the invention, with
So that windward side is capable of forming " golf effect ", so that windward side turns to twist turbulent flow in advance, gas on windward side is delayed with this
The shunting of stream.Since the shunting of air-flow is delayed, so that the wake zone on the leeward of balance weight is relatively small, therefore, pressure difference
Resistance also reduces therewith.If pressure drag reduces, facilitate the stability for promoting rotor operation, especially frequency conversion is compressed
Machine, the reduction of aerodynamic drag can improve the stability when operation of its low speed.
Detailed description of the invention
Fig. 1 a is the end view drawing of the balance weight of existing rotor；
Fig. 1 b is the left view of balance weight shown in Fig. 1 a；
Fig. 2 a is the end view drawing of the balance weight for the rotor that one embodiment of the invention provides；
Fig. 2 b is the left view of balance weight shown in Fig. 2 a.
Specific embodiment
Below in conjunction with the drawings and specific embodiments to rotor proposed by the present invention and its balance weight and compressor make into
One step is described in detail.According to following explanation, advantages and features of the invention will be become apparent from.It should be noted that attached drawing be all made of it is non-
Often simplified form and non-accurate ratio is used, only for the purpose of facilitating and clarifying the purpose of the embodiments of the invention.
As used in this specification, singular "a", "an" and "the" includes plural reference, except non-content is in addition bright
It really points out outer.
Firstly, the compressor includes a rotor, one end of the rotor the present invention provides a kind of compressor
A balance weight is provided on face, which can not only improve static and dynamic equilibrium when rotor operation, additionally it is possible to reduce electricity
The aerodynamic drag as caused by windward side on balance weight when machine rotor rotates.Wherein, the compressor further includes realizing gas pressure
The compression mechanism of contracting, it is preferred that the balance weight is set to rotor on the lower end surface of the compression mechanism.
In being described below, the structure of balance weight will be described in further detail, but following is only citing signal, is not answered
As limitation of the invention.
Fig. 2 a is the end view drawing of the balance weight for the rotor that one embodiment of the invention provides, and Fig. 2 b is shown in Fig. 2 a
The left view of balance weight, as shown in Figure 2 a and 2 b, a kind of balance weight 20, is semi-circular shape, mountable in rotor 10
An end face on (end face be preferably close to compression mechanism lower end surface).Therefore, described when the rotor 10 rotates
The also synchronous rotary therewith of balance weight 20.
If the balance weight 20 has circumferentially opposed first end face 21 and second end for the balance weight 20 of semi-circular shape
Face 22；When the rotor 10 direction shown in the arrow S3 rotates counterclockwise, the first end face 21 is windward side, will
Directly by head-on wind action, and the second end face 22 is leeward；But when rotor side shown in the arrow S4
To when rotating clockwise, the second end face 22 is windward side, and the first end face 21 is but changed into leeward.Here, invention
It is artificial to reduce aerodynamic drag suffered by balance weight 20, pit S is provided on the windward side of balance weight 20, such as first
Pit S is set on end face 21, or pit S is set in second end face 22, or simultaneously in first end face 21 and second end face
Pit S is set on 22.
So, by the way that pit is arranged on the windward side of balance weight 20, the surface roughness of windward side can be increased, so that
It obtains windward side and is capable of forming " golf effect ", so that windward side turns to twist turbulent flow in advance, windward side overdraught is delayed with this
Shunting.Since the shunting of air-flow is delayed, so that the wake zone on the leeward of balance weight 20 is relatively small, therefore, pressure difference
Resistance also reduces therewith.If pressure drag reduces, facilitate the stability for promoting rotor operation, especially frequency conversion is compressed
Machine, the reduction of aerodynamic drag can improve the stability when operation of its low speed.
And then discovery is tested, pit is set on the smooth golf in surface, golf can be slowed down in air
Suffered aerodynamic drag, therefore golf can be struck farther.Similarly, when rotor revolves counterclockwise or clockwise
When turning, if pit is arranged in corresponding windward side, " golf effect " also will form on corresponding windward side, so that should
The aerodynamic drag that windward side is subject to reduces.
With continued reference to Fig. 2 a, the balance weight 20 also has a lateral surface 23 and medial surface 24 diametrically, and described first
End face 21 and second end face 22 abut lateral surface 23 and medial surface 24 respectively.But no matter rotor 10 clockwise or the inverse time
Needle rotation, effect of 23 federation of lateral surface by air-flow, therefore, the lateral surface 23 is fixed as windward side always.Thus
As it can be seen that windward side is a relative concept, it is not absolutely fixed, and the steering of rotor and the position in each face have
Close relationship.Preferably, the lateral surface 23 also settable pit.
In addition, the medial surface 24 is hardly influenced by air draught, and therefore, in order to reduce processing cost, institute
State the not set any pit of medial surface 24.In addition, the balance weight 20 is also with the upper table in adjacent inner side face 24 and lateral surface 23
Face 25, since upper surface 25 also not will receive the influence of air draught, so, any pit can not also be processed.Certainly, some
In the case of, it is also contemplated that processing pit on medial surface 24, lateral surface 23 and upper surface 25.
Specifically, when rotor rotates counterclockwise, since lateral surface 23 and first end face 21 are windward side, because
This, which will receive the influence of air draught, then, when air draught does not shunt, because of sky consumed by boundary layer
Gas air-flow stagnation pressure is less than the first end face 21 as windward side in the air pressure of second end face 22, therefore forms pressure drag, at this point,
The value of pressure drag is smaller, and almost all is frictional resistance, therefore smaller to the influence on system operation of rotor.Then, with
The revolving speed of rotor increases, and becomes larger in the difference of the air pressure of the air pressure and first end face 21 of second end face 22, leads to pressure drag
It increases accordingly, at this point, pressure drag also becomes more significant for the influence on system operation of rotor.But due to first end face
21 and lateral surface 23 be equipped with pit, therefore surface roughness increase, created condition for formation " golf effect ".Institute
With when air-flow passes through first end face 21 and lateral surface 23, air-flow turns to twist turbulent flow in advance, and the shunting of air-flow is caused to be delayed.
Since the shunting of gas is delayed, so the wake zone of second end face 22 is just relatively small when rotating counterclockwise, so balance weight
Pressure drag suffered by 20 is also reduced.
In another scenario, when rotor rotates clockwise, since lateral surface 23 and second end face 22 are served as and are met
Wind face, then two faces will receive the influence of air draught, and first end face 21 is changed into leeward at this time.Do not divide in air draught
When stream, because air draught stagnation pressure consumed by boundary layer is less than second end face 21 in the air pressure of first end face 21, formed
Pressure drag, at this point, the value of pressure drag is smaller, almost all is frictional resistance, therefore to the influence on system operation of rotor
It is smaller.With the increase of rotor revolving speed, increased accordingly in the difference of the air pressure of the air pressure and second end face 22 of first end face 21,
Pressure drag is caused accordingly to become larger, at this point, pressure drag becomes significant for the influence on system operation of rotor.But due to
Biend 22 and lateral surface 23 are equipped with pit, therefore the roughness on surface increases, and are similarly to form " golf effect " wound
Condition is made.Then, when air-flow passes through second end face 22 and lateral surface 23, air-flow turns to twist turbulent flow in advance, so air-flow
Shunting is delayed.Since the shunting of gas is delayed, so the wake zone of the first end face 21 as leeward is just relatively small,
Therefore pressure drag suffered by balance weight 20 also reduces accordingly.
It obviously, must in first end face 21 and second end face 22 in the case where the direction of rotation of rotor has determined
There is one to serve as windward side, another is leeward, therefore, can be considered only according to the direction of rotation of rotor first
A upper processing pit in end face 21 and second end face 22.It, can be first if the direction of rotation of rotor can not be determined
Simultaneous processing pit S on end face 21 and second end face 22.Meanwhile no matter how rotor rotates, lateral surface 23 is always for windward
Face, therefore it is preferred that pit S is processed on outer side 23.However, compared to first end face 21 and second end face 22, when lateral surface 23 by
When can be ignored to the influence of air draught, pit S can not also be set on outer side 23, be produced into save
This.
In the present embodiment, pit S is set at least on a windward side.For the same windward side, the quantity of pit S is excellent
It is selected as multiple, the arrangement mode of multiple pit S does not limit particularly, can be regular distribution, is also possible to irregular
Distribution, but be preferably evenly distributed on windward side, such as linear array distribution.Here, surface uniform layout is multiple recessed
It is stronger that hole S is formed by " golf effect ".
Further, the pit S is preferably circular, facilitates molding, the diameter of circular pit preferably in 2.0~4.0mm, this
Sample is not only easy to process and can preferably form " golf effect ".In addition, the depth of each pit is preferably identical, more
Facilitate processing.The cross-sectional area and shape of multiple pits are preferably identical.
Further, the balance weight 20 is equipped with the mounting hole 26 connecting with rotor 10, the quantity of mounting hole 26
Two are not limited to, and specifically can neighbouring first end face 21 and the setting of second end face 22.In practice, balance weight 20 can be pacified by two
Dress hole 26 is fixedly connected with rotor 10, and connection type can be riveting or bolt etc., and riveting method can use core pulling riveting
It connects or aluminium glue rivets.
Preferably, the balance weight 20 uses material easy to process, such as one in ordinary steel, weak magnetic steel and plastics
Kind material.
It should be noted that present pre-ferred embodiments are as described above, but be not limited to disclosed in above-described embodiment
Range, such as the balance weight 20 can also be also ring-type, specifically can be circular ring shape.If balance weight 20 is selected from ring structure,
The lateral surface of balance weight 20 is the settable pit in windward side.In addition, balance weight 20 is not limited to if balance weight 20 is selected from other than ring type
Semi-circular shape can also be that central angle is greater than 180 ° or the non-circular structure less than 180 °.
Finally, the technical solution provided according to embodiments of the present invention, when rotor rotation, in rotor with reuse
Balance weight windward side on can generate air-flow, when air-flow does not shunt, because air-flow stagnation pressure consumed by boundary layer is in leeward
Less than windward side, therefore pressure drag is formed, but its value is smaller, almost all is frictional resistance, but when rotor revolving speed increases
Add, pressure drag is consequently increased.For this purpose, increasing windward side by the way that pit is arranged on the windward side of balance weight of the invention
Surface roughness so that windward side is capable of forming " golf effect ", so that windward side turns to twist turbulent flow in advance, with this
Delay the shunting of windward side overdraught.Since the shunting of air-flow is delayed, so that the wake zone on the leeward of balance weight is opposite
Smaller, therefore, pressure drag also reduces therewith.If pressure drag reduces, facilitate the stability for promoting rotor operation,
Especially frequency-changeable compressor, the reduction of aerodynamic drag can improve the stability when operation of its low speed.
It should be noted last that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although ginseng
It is described the invention in detail according to preferred embodiment, those skilled in the art should understand that, it can be to the present invention
Technical solution be modified or replaced equivalently, without departing from the spirit and scope of the technical solution of the present invention.
Claims (10)
1. a kind of balance weight of rotor, which is characterized in that the balance weight has windward side, and sets on the windward side
There is pit.
2. the balance weight of rotor as described in claim 1, which is characterized in that the pit be it is multiple, it is multiple described
Pit is evenly distributed on the windward side.
3. the balance weight of rotor as claimed in claim 1 or 2, which is characterized in that the diameter of the pit 2mm~
Between 4mm.
4. the balance weight of rotor as claimed in claim 1 or 2, which is characterized in that the balance weight is in non-annularity.
5. the balance weight of rotor as claimed in claim 4, which is characterized in that the balance weight has opposite first
End face and second end face, one in the first end face and the second end face is windward side, the first end face and described
Another in second end face is leeward；Wherein, it is arranged in the first end face and/or the second end face described recessed
Hole.
6. the balance weight of rotor as claimed in claim 5, which is characterized in that the balance weight also has an outside
Face, the lateral surface is adjacent with the first end face and the second end face and is a windward side；Wherein, in the outside
The pit is set in face, the first end face and/or the second end face.
7. the balance weight of rotor as claimed in claim 1 or 2, which is characterized in that the balance weight is annular in shape.
8. a kind of rotor, which is characterized in that an end face of the rotor is equipped with such as any one of claim 1-7 institute
The balance weight stated.
9. a kind of compressor, which is characterized in that including rotor and such as balance of any of claims 1-7
Block, the balance weight are set to an end face of the rotor.
10. compressor as claimed in claim 9, which is characterized in that the compressor further includes compression mechanism, the balance weight
Set on the rotor on an end face of the compression mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810195340.2A CN110247506A (en) | 2018-03-09 | 2018-03-09 | Rotor and its balance weight and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810195340.2A CN110247506A (en) | 2018-03-09 | 2018-03-09 | Rotor and its balance weight and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110247506A true CN110247506A (en) | 2019-09-17 |
Family
ID=67882742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810195340.2A Pending CN110247506A (en) | 2018-03-09 | 2018-03-09 | Rotor and its balance weight and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110247506A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1862919A (en) * | 2005-05-10 | 2006-11-15 | 乐金电子(天津)电器有限公司 | Motor rotor counterbalance structure for compressor |
| CN201152262Y (en) * | 2008-01-21 | 2008-11-19 | 松下·万宝(广州)压缩机有限公司 | Compressor |
| CN106151040A (en) * | 2016-06-29 | 2016-11-23 | 安徽美芝精密制造有限公司 | Rotary compressor |
| CN206221266U (en) * | 2016-11-16 | 2017-06-06 | 广东美芝精密制造有限公司 | The balance weight of compressor, the electric machine assembly of compressor and compressor |
| WO2018035732A1 (en) * | 2016-08-24 | 2018-03-01 | 广东美芝制冷设备有限公司 | Motor rotor for use in compressor, motor for use in compressor, and compressor |
| CN208001203U (en) * | 2018-03-09 | 2018-10-23 | 上海海立电器有限公司 | Rotor and its balance weight and compressor |
-
2018
- 2018-03-09 CN CN201810195340.2A patent/CN110247506A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1862919A (en) * | 2005-05-10 | 2006-11-15 | 乐金电子(天津)电器有限公司 | Motor rotor counterbalance structure for compressor |
| CN201152262Y (en) * | 2008-01-21 | 2008-11-19 | 松下·万宝(广州)压缩机有限公司 | Compressor |
| CN106151040A (en) * | 2016-06-29 | 2016-11-23 | 安徽美芝精密制造有限公司 | Rotary compressor |
| WO2018035732A1 (en) * | 2016-08-24 | 2018-03-01 | 广东美芝制冷设备有限公司 | Motor rotor for use in compressor, motor for use in compressor, and compressor |
| CN206221266U (en) * | 2016-11-16 | 2017-06-06 | 广东美芝精密制造有限公司 | The balance weight of compressor, the electric machine assembly of compressor and compressor |
| CN208001203U (en) * | 2018-03-09 | 2018-10-23 | 上海海立电器有限公司 | Rotor and its balance weight and compressor |
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