CN209329807U - Rotor, motor and compressor - Google Patents
Rotor, motor and compressor Download PDFInfo
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- CN209329807U CN209329807U CN201822188235.4U CN201822188235U CN209329807U CN 209329807 U CN209329807 U CN 209329807U CN 201822188235 U CN201822188235 U CN 201822188235U CN 209329807 U CN209329807 U CN 209329807U
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Abstract
The utility model relates to a kind of rotor, motor and compressors, wherein rotor (10) includes: first axle (1)；Second axis (2)；Permanent magnet (3) is arranged between first axle (1) and the second axis (2)；Sheath (4) is set in the periphery of first axle (1), permanent magnet (3) and the second axis (2), and for connecting first axle (1), permanent magnet (3) and the second axis (2)；And position limiting structure, it is formed for limiting sheath (4) axially movable, and by a positive stop lug boss (5), positive stop lug boss (5) is arranged in first axle (1) or the second axis (2).Motor includes rotor.Compressor includes motor.The utility model can promote the structural strength of rotor, guarantee that rotor is safely and reliably run at high speed.
Description
Technical field
The utility model relates to Compressor Technology field more particularly to a kind of rotors, motor and compressor.
Background technique
Centrifugal refigerating compressor belongs to high speed degree type compressor, and compressor drum high speed rotation at work, needing can
The bearing leaned on is supported rotor.The bearing that convention rotor uses mainly has rolling bearing, filmatic bearing, magnetic suspension bearing.
For rolling bearing and filmatic bearing, compressor needs the oil feeding line system of additional oil lubrication system and complexity, simultaneously
Since refrigerant and lubricating oil have compatibility, need to increase separation system inside system, this will lead to whole system excessively
It is complicated and huge.
Rolling bearing and sliding bearing are larger due to rubbing, and are not suitable for high revolving speed compressor.Using gas suspension bearing conduct
The bearing of high revolving speed compressor can reduce bearing friction loss, bearing temperature be reduced, to promote compressor reliability.Cause
This gas suspension centrifugal compressor is to solve centrifugal compressor high speed, the important technology approach of miniaturization.
In gas suspension centrifugal compressor, compared to frequency motor is determined, centrifugation pressure can be greatly promoted using high-speed permanent magnet motor
The efficiency of contracting machine, however at high speed, the electric machine structure intensity of centrifugal compressor is one of design difficulty of motor.On rotor
The structural strength of each part is lower, and electric machine structure safety is poorer.
It should be noted that the information for being disclosed in the utility model background technology part is merely intended to increase to originally practical new
The understanding of the general background of type, and be not construed as recognizing or implying in any form that information composition has been art technology
The prior art well known to personnel.
Utility model content
The purpose of this utility model is to propose a kind of rotor, motor and compressor, is meeting electromagnetic high efficiency design
Meanwhile guaranteeing the structural strength of permanent magnet, improve motor safety.
To achieve the above object, the utility model provides a kind of rotor, comprising:
First axle；
Second axis；
Permanent magnet is arranged between first axle and the second axis；
Sheath is set in the periphery of first axle, permanent magnet and the second axis, and for connecting first axle, permanent magnet and second
Axis；With
Position limiting structure is formed for limiting sheath axially movable, and by a positive stop lug boss, and positive stop lug boss setting is the
On one axis or the second axis.
Optionally, permanent magnet is solid cylinder.
It optionally, is interference fit between sheath and first axle, permanent magnet and the second axis.
Optionally, positive stop lug boss is arranged in first axle, and is integrally formed with first axle；Alternatively, positive stop lug boss setting exists
On second axis, and it is integrally formed with the second axis.
Optionally, first axle includes the first shaft part close to permanent magnet, and the second axis includes the second shaft part close to permanent magnet,
The diameter of the diameter of first shaft part and the second shaft part is identical as the diameter of permanent magnet.
Optionally, the length of permanent magnet is greater than the length of the first shaft part and the length of the second shaft part.
Optionally, the equal length of the length of the first shaft part and the second shaft part.
Optionally, first axle and/or the second axis are equipped with lightening hole.
Optionally, the inside of first axle and/or the second axis is arranged in lightening hole；Alternatively, lightening hole is blind hole, and from close
The end of permanent magnet extends away from the direction of permanent magnet；Alternatively, lightening hole is blind hole, and from the end face far from permanent magnet to leaning on
The direction of nearly permanent magnet extends；Alternatively, lightening hole is through-hole.
Optionally, first axle and/or the second axis are equipped with gas vent.
Optionally, first axle and/or the second axis are equipped with cooling hole, be passed through in cooling hole for cool down first axle and/or
The cooling medium of second axis.
Optionally, cooling hole is obliquely installed relative to the axis of first axle or the second axis.
Optionally, cooling hole is arranged in first axle, and cooling hole is through-hole, and from the peripheral side of first axle relative to the
The axis of one axis extends obliquely to the end face of the close permanent magnet of first axle；And/or cooling hole is arranged on the second axis, it is cold
But hole is through-hole, and extends obliquely to the close permanent magnetism of the second axis relative to the axis of the second axis from the peripheral side of the second axis
The end face of body.
Optionally, cooling hole radially extends, and first axle and/or the second axis are equipped with the cooling axially extended and lead to
Road, cooling hole are connected to cooling duct.
To achieve the above object, the utility model additionally provides a kind of motor, including above-mentioned rotor.
To achieve the above object, the utility model additionally provides a kind of compressor, including above-mentioned motor.
Optionally, compressor further includes gas bearing, and rotor is supported in gas bearing.
Based on the above-mentioned technical proposal, the utility model rotor embodiment using sheath connection first axle, permanent magnet and
Second axis, can be with effective protection permanent magnet, and realizes being reliably connected for each component, improves the overall structural strength of rotor；
Position limiting structure is made of a positive stop lug boss, can be carried out axial limiting to sheath, is respectively set compared to the two sides in sheath
For the technical solution of one positive stop lug boss, the utility model can make close between first axle, permanent magnet and the second axis
Contact is avoided being caused due to foozle or rigging error etc. between first axle, permanent magnet and the second axis there are gap, drop
The structural strength of low rotor.
Detailed description of the invention
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
The exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the improper of the utility model
It limits.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the utility model rotor one embodiment.
Fig. 2 is a kind of set-up mode schematic diagram of lightening hole in the utility model rotor one embodiment.
Fig. 3 is another set-up mode schematic diagram of lightening hole in the utility model rotor one embodiment.
Fig. 4 is another set-up mode schematic diagram of lightening hole in the utility model rotor one embodiment.
Fig. 5 is a kind of set-up mode schematic diagram of cooling hole in the utility model rotor one embodiment.
Fig. 6 is another set-up mode schematic diagram of cooling hole in the utility model rotor one embodiment.
Fig. 7 is the schematic diagram of internal structure of the utility model compressor one embodiment.
In figure:
1, first axle；2, the second axis；3, permanent magnet；4, sheath；5, positive stop lug boss；6, lightening hole；7, gas vent；8, cooling
Hole；9, cooling duct；
10, rotor；20, motor stator；30, first gas bearing；40, electric machine casing；50, second gas bearing；
60, first shell；70, bearing block；80, second shell；90, impeller；100, connector.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, the technical solution in embodiment is carried out it is clear, complete
Ground description.Obviously, described embodiment is only a part of the embodiment of the utility model, instead of all the embodiments.
Based on the embodiments of the present invention, institute obtained by those of ordinary skill in the art without making creative efforts
There are other embodiments, fall within the protection scope of the utility model.
In the description of the present invention, it should be understood that term " center ", " transverse direction ", " longitudinal direction ", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For the limitation to scope of protection of the utility model.
As shown in Figure 1, the rotor includes first in one embodiment of rotor provided by the utility model
Axis 1, the second axis 2, permanent magnet 3 and sheath 4, permanent magnet 3 are arranged between first axle 1 and the second axis 2, and sheath 4 is set in first
The periphery of axis 1, permanent magnet 3 and the second axis 2, sheath 4 is for connecting first axle 1, permanent magnet 3 and the second axis 2.
In this embodiment, first axle 1, permanent magnet 3 and the second axis 2 are connected using sheath 4, it can be with effective protection permanent magnet
3, it realizes being reliably connected for each component, effectively improves the overall structural strength of rotor.
Rotor further includes position limiting structure, and position limiting structure is for limiting sheath 4 axially movable, and position limiting structure is by one
Positive stop lug boss 5 forms, and positive stop lug boss 5 is arranged in first axle 1 or the second axis 2.
Position limiting structure is made of a positive stop lug boss, and the benefit being arranged in this way is set respectively compared in the two sides of sheath
For the technical solution for setting a positive stop lug boss, first axle, permanent magnet and the second axis can be made to be in close contact each other, avoided
It is caused due to foozle or rigging error etc. there are gap between first axle, permanent magnet and the second axis, reduction motor turns
The structural strength of son.
Permanent magnet 3 is solid cylinder, can increase the electromagnetism intensity of rotor, reduce the volume of permanent magnet, favorably
In the miniaturization of compressor；The linear velocity of permanent magnetism external surface is reduced simultaneously, reduces centrifugal force suffered by permanent magnet and sheath,
Enhance the overall structural strength of rotor.
It can be using interference fit between sheath 4 and first axle 1, permanent magnet 3 and the second axis 2.It can turn in this way in motor
Guarantee to be tightly combined between sheath 4 and first axle 1, permanent magnet 3 and the second axis 2 in sub- operational process, be not in relative movement,
Enhance the bonding strength between sheath 4 and first axle 1, permanent magnet 3 and the second axis 2, guarantees rotor when rotating at high speed
Structural stability.
Positive stop lug boss 5 can be set in first axle 1, and be integrally formed with first axle 1.Positive stop lug boss 5 also can be set
It is integrally formed on the second axis 2, and with the second axis 2.
First axle 1 includes the first shaft part close to permanent magnet 3, and the second axis 2 includes the second shaft part close to permanent magnet 3, the
The diameter of the diameter of one shaft part and the second shaft part is identical as the diameter of permanent magnet 3.Setting, which can be easy to implement, in this way passes through shield
Using interference fit between set 4 and first axle 1, permanent magnet 3 and the second axis 2.
The length of permanent magnet 3 is greater than the length of the first shaft part and the length of the second shaft part, increases permanent magnet 3 as much as possible
Length increases electromagnetism intensity.
The equal length of the length of first shaft part and the second shaft part advantageously ensures that the uniform force of rotor.
As shown in Fig. 2, first axle 1 and/or the second axis 2 are equipped with lightening hole 6.By the way that lightening hole 6 is arranged, electricity can be reduced
The overall weight of machine rotor.
The quantity of lightening hole 6 can flexible setting according to actual needs.Optionally, loss of weight set in first axle 1
Hole 6 is identical with the quantity of lightening hole 6 set in the second axis 2, and is symmetrical arranged about permanent magnet 3.
The setting form of lightening hole 6 can there are many selections.For example, in one embodiment, lightening hole 6 is arranged first
The inside of axis 1 and/or the second axis 2, the i.e. circumferential direction of lightening hole 6 are closed.In another embodiment, as shown in Fig. 2, loss of weight
Hole 6 is blind hole, and the direction from the end close to permanent magnet 3 away from permanent magnet 3 extends.In yet another embodiment, such as Fig. 3
Shown, lightening hole 6 is blind hole, and extends from the end face far from permanent magnet 3 to the direction close to permanent magnet 3.In another implementation
In example, as shown in figure 4, lightening hole 6 is through-hole.
Gas vent 7 is also provided on first axle 1 and/or the second axis 2.By the way that gas vent 7 is arranged, can turn in motor
Prevented when subassembly between first axle 1 and permanent magnet 3 and permanent magnet 3 and the second axis 2 between due to entrained gas and between occurring
Gap can not be adjacent to, and reduce the overall structural strength of rotor.Gas vent 7 can also play the role of loss of weight.
Gas vent 7 can be separately provided, and make end face and the external world's ring of the close permanent magnet 3 of first axle 1 and/or the second axis 2
Border communicates, and realizes scavenging action.
Gas vent 7 can also be equipped with lightening hole 6, as shown in figure 3, first axle 1 and the second axis 2 are equipped with from separate
The lightening hole 6 that the end face of permanent magnet 3 extends to the direction close to permanent magnet 3, gas vent 7 are connected to lightening hole 6, and gas vent 7 prolongs
Extend to the end face of the close permanent magnet 3 of first axle 1 and the second axis 2.
First axle 1 and/or the second axis 2 are equipped with cooling hole 8, are passed through in cooling hole 8 for cooling down first axle 1 and/or the
The cooling medium of two axis 2.By the way that cooling hole 8 is arranged, rotor can be cooled down, prevent rotor in the course of work
Medium temperature spends height, effective protection rotor.
As shown in figure 5, cooling hole 8 is obliquely installed relative to the axis of first axle 1 or the second axis 2.
Cooling hole 8 is arranged in first axle 1, and cooling hole 8 is through-hole, and from the peripheral side of first axle 1 relative to first
The axis of axis 1 extends obliquely to the end face of the close permanent magnet 3 of first axle 1.Cooling hole 8 also can be set in the second axis 2
On, cooling hole 8 is through-hole, and extends obliquely to the second axis 2 relative to the axis of the second axis 2 from the peripheral side of the second axis 2
Close permanent magnet 3 end face.
The benefit being arranged in this way is can will to lead to permanent magnet 3 from the cooling medium of rotor peripheral side concentration,
Realize the efficient cooling to permanent magnet 3.
As shown in fig. 6, cooling hole 8 radially extends, and first axle 1 and/or the second axis 2 are cold equipped with axially extending
But channel 9, cooling hole 8 are connected to cooling duct 9.
Cooling duct 9 in first axle 1 is axially through first axle 1, and cooling hole 8 extends radially through first axle 1, first
On the axial direction of axis 1, the quantity of cooling hole 8 is multiple, and also is provided with multiple cooling holes in the circumferential different location of first axle 1
8.Axially through the second axis 2, cooling hole 8 extends radially through the second axis 2 for cooling duct 9 on second axis 2, in the second axis 2
On axial direction, the quantity of cooling hole 8 is multiple, and also is provided with multiple cooling holes 8 in the circumferential different location of the second axis 2.
In the other embodiments of rotor provided by the utility model, lightening hole 6, gas vent 7, cooling hole 8 and cold
But channel 9 can be freely combined, moreover, gas vent 7, cooling hole 8 and cooling duct 9 all can serve as a kind of shape of lightening hole 6
Formula can also play the role of loss of weight.
Pass through the explanation of multiple embodiments to the utility model rotor, it can be seen that the utility model rotor
Embodiment uses solid permanent magnet, can increase electromagnetism intensity, under the premise of needing to reach same electromagnetic intensity, Ke Yiyou
Effect reduces the size of rotor；By the way that the position limiting structure being made of a positive stop lug boss is arranged, axial limiting may be implemented, together
Shi Buhui leads to gap occur between first axle and permanent magnet and between permanent magnet and the second axis because of foozle；Pass through shield
Set connection first axle, permanent magnet and the second axis, can be with effective protection permanent magnet, while promoting the structural strength of rotor, protects
It is safe and reliable to operation at high speed to demonstrate,prove rotor；It is additionally provided with lightening hole, gas vent and cooling hole, motor is further promoted and turns
The comprehensive performance of son.
Based on above-mentioned rotor, the utility model also provides a kind of motor, which includes above-mentioned rotor.
The utility model additionally provides a kind of compressor.The compressor includes above-mentioned motor.
Compressor further includes gas bearing, and rotor is supported in gas bearing.
As shown in fig. 7, gas bearing includes first gas bearing 30 and second gas bearing 50,30 edge of first gas bearing
Radial arrangement, is supported rotor 10；Second gas bearing 50 is axially disposed, and it is axial fixed to carry out to rotor 10
Position.
Motor further includes motor stator 20 and electric machine casing 40.Compressor further includes first shell 60, bearing block 70,
Two shells 80, impeller 90 and connector 100, first shell 60 and second shell 80 are fixedly connected with electric machine casing 40.First
Gas bearing 30 and second gas bearing 50 are installed on bearing block 70.Both stage impellers 90 are connected by connector 100 respectively
At the both ends of rotor 10.Both stage impellers 90 are arranged back-to-back, advantageously reduce the axial force in compressor operational process.Two
A first gas bearing 30 being arranged radially is separately positioned on the both ends of rotor 10, while being located between two impellers 90,
Be conducive to that shaft strength is uniform in this way, while guaranteeing that the rigidity of rotor 10 is uniform, the cantilever for reducing rotor 10 is too long
Cause to vibrate larger problem.The second gas bearing 50 being axially arranged is located at the outside of one stage impeller 90, guarantees rotor
10 axially run smoothly.
Positive technical effect possessed by rotor is equally applicable to motor and compressor in above-mentioned each embodiment, this
In repeat no more.
Finally it should be noted that: above embodiments are only to illustrate the technical solution of the utility model rather than limit it
System；Although the utility model has been described in detail with reference to the preferred embodiment, those of ordinary skill in the art should
Understand: specific implementation of the utility model can still be modified or is equally replaced to some technical characteristics
It changes；Without departing from the spirit of technical solutions of the utility model, should all cover in the claimed technical solution of the utility model
In range.
Claims (17)
1. a kind of rotor characterized by comprising
First axle (1)；
Second axis (2)；
Permanent magnet (3) is arranged between the first axle (1) and second axis (2)；
Sheath (4) is set in the periphery of the first axle (1), the permanent magnet (3) and second axis (2), and for connecting
The first axle (1), the permanent magnet (3) and second axis (2)；With
Position limiting structure forms, the limit convex for limiting the sheath (4) axially movable, and by a positive stop lug boss (5)
Platform (5) is arranged in the first axle (1) or second axis (2).
2. rotor according to claim 1, which is characterized in that the permanent magnet (3) is solid cylinder.
3. rotor according to claim 1, which is characterized in that the sheath (4) and the first axle (1), described
It is interference fit between permanent magnet (3) and second axis (2).
4. rotor according to claim 1, which is characterized in that the positive stop lug boss (5) is arranged in the first axle
(1) it on, and is integrally formed with the first axle (1)；Alternatively, the positive stop lug boss (5) is arranged on second axis (2), and
It is integrally formed with second axis (2).
5. rotor according to claim 1, which is characterized in that the first axle (1) includes close to the permanent magnet
(3) the first shaft part, second axis (2) include the second shaft part close to the permanent magnet (3), the diameter of first shaft part
It is identical as the diameter of the permanent magnet (3) with the diameter of second shaft part.
6. rotor according to claim 5, which is characterized in that the length of the permanent magnet (3) is greater than described first
The length of the length of shaft part and second shaft part.
7. rotor according to claim 5, which is characterized in that the length of first shaft part and second shaft part
Equal length.
8. rotor according to claim 1, which is characterized in that the first axle (1) and/or second axis (2)
It is equipped with lightening hole (6).
9. rotor according to claim 8, which is characterized in that the lightening hole (6) is arranged in the first axle (1)
The inside of second axis (2) and/or；Alternatively, the lightening hole (6) is blind hole, and certainly close to the end face of the permanent magnet (3)
Extend to the direction far from the permanent magnet (3)；Alternatively, the lightening hole (6) is blind hole, and from far from the permanent magnet (3)
End face to close to the permanent magnet (3) direction extend；Alternatively, the lightening hole (6) is through-hole.
10. rotor according to claim 1, which is characterized in that the first axle (1) and/or second axis (2)
It is equipped with gas vent (7).
11. rotor according to claim 1, which is characterized in that the first axle (1) and/or second axis (2)
It is equipped with cooling hole (8), is passed through in the cooling hole (8) for cooling down the first axle (1) and/or second axis (2)
Cooling medium.
12. rotor according to claim 11, which is characterized in that the cooling hole (8) is relative to the first axle
(1) or the axis of second axis (2) is obliquely installed.
13. rotor according to claim 12, which is characterized in that the cooling hole (8) is arranged in the first axle
(1) on, the cooling hole (8) is through-hole, and the axis from the peripheral side of the first axle (1) relative to the first axle (1)
Line extends obliquely to the end face close to the permanent magnet (3) of the first axle (1)；And/or cooling hole (8) setting
On second axis (2), the cooling hole (8) is through-hole, and from the peripheral side of second axis (2) relative to described the
The axis of two axis (2) extends obliquely to the end face close to the permanent magnet (3) of second axis (2).
14. rotor according to claim 11, which is characterized in that the cooling hole (8) radially extends, and described
First axle (1) and/or second axis (2) are equipped with the cooling duct (9) axially extended, the cooling hole (8) with it is described
Cooling duct (9) connection.
15. a kind of motor, which is characterized in that including the described in any item rotors of such as claim 1~14.
16. a kind of compressor, which is characterized in that including motor as claimed in claim 15.
17. compressor according to claim 16, which is characterized in that it further include gas bearing, the rotor support
In in the gas bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822188235.4U CN209329807U (en) | 2018-12-25 | 2018-12-25 | Rotor, motor and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822188235.4U CN209329807U (en) | 2018-12-25 | 2018-12-25 | Rotor, motor and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209329807U true CN209329807U (en) | 2019-08-30 |
Family
ID=67728592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822188235.4U Active CN209329807U (en) | 2018-12-25 | 2018-12-25 | Rotor, motor and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209329807U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020134509A1 (en) * | 2018-12-25 | 2020-07-02 | 珠海格力电器股份有限公司 | Motor rotor, compressor and air conditioning device |
-
2018
- 2018-12-25 CN CN201822188235.4U patent/CN209329807U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020134509A1 (en) * | 2018-12-25 | 2020-07-02 | 珠海格力电器股份有限公司 | Motor rotor, compressor and air conditioning device |
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