CN107313962A - A kind of method for optimizing the rotor performance with foil air bearing - Google Patents
A kind of method for optimizing the rotor performance with foil air bearing Download PDFInfo
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- CN107313962A CN107313962A CN201710716779.0A CN201710716779A CN107313962A CN 107313962 A CN107313962 A CN 107313962A CN 201710716779 A CN201710716779 A CN 201710716779A CN 107313962 A CN107313962 A CN 107313962A
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- rotating shaft
- air bearing
- end rotating
- foil air
- thrust
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/053—Shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/24—Vanes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/26—Systems consisting of a plurality of sliding-contact bearings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of method for optimizing the rotor performance with foil air bearing, a front end rotating shaft, the other end are connected in solid permanent magnet one end and connects a rear end rotating shaft, foil air bearing before being installed in the rotating shaft of front end, installs radical-thrust joint foil air bearing, L-shaped thrust disc, thrust foil air bearing successively in the rotating shaft of rear end；Couple by the interference fit between protective case and front end rotating shaft, solid permanent magnet, rear end rotating shaft and realize transmitting forward, backward for moment of torsion; the carrying of radial load is realized by preceding foil air bearing and radical-thrust joint foil air bearing, L-shaped thrust disc realizes the carrying to axial load under the synergy that radical-thrust combines foil air bearing and thrust foil air bearing.The high-speed blower that the present invention is used supports the solid box-like rotor of set of permanent magnets with foil air bearing, and compact conformation, quality are small and rotor dynamics are excellent.
Description
Technical field
The present invention relates to high-speed blower technical field.
Background technology
Air blower is operated due to impeller in body, because without friction, without lubrication cause discharge gas not oil-containing into
Point, as the industry such as chemical industry, food preferably Geldart-D particle source of the gas, and in the blast aeration of sewage disposal system, power plant takes off
The stripping of sulphur denitration, coal dust, the material conveying of cement building material, makes steel the fields such as metallurgy, textile printing and dyeing, large ship and is able to extensively
Using.
Than other kind class bearing of foil air bearing is more suitable for high speed light loading air blower field：Rolling bearing is worked
There is contact wear in journey, it is difficult to realize high rotating speed, long-lived operation.Magnetic suspension bearing is applied to high-speed overload field, but deposits
Control system is complicated, price is high, deficiency because being not suitable for harsh environments using high-precision sensor.Liquid is slided
Oil feed line is complicated in the extra oil supply system of dynamic bearing needs, electric machine stand and easily leakage, high speed down cut friction power loss are big
Cause temperature rise.So, application foil air bearing has unique advantage on the air blower of high speed light loading.
However, the characteristics of foil air bearing bearing capacity is weak, rigidity is low brings great challenge to rotor structure.Rotor
Gross mass is limited to the low bearing capacity of foil air bearing, it is necessary to which loss of weight optimizes as far as possible.Because permanent magnet tensile strength is low
It is easy to destruction under high speed centrifugation action of pulling stress, so as to limit rotor diameter size, reduces the rigidity of rotating shaft.Relatively low
Bearing rigidity and shaft stiffness make rotor dynamics design become extremely difficult, and the matching between countershaft and impeller is proposed
Rigors.Therefore, want to develop high rotating speed, long-life single-stage associated mode air blower it is necessary to solve above-mentioned relevant technological difficulties,
Design the rotor structure that a kind of compact conformation, quality are small and rotor dynamics are excellent.
The Chinese invention patent of Application No. 201410410513 discloses a kind of air suspension centrifugal blower, including
Motor, motor base, flow-guiding mouth, exhaust outlet, turbine and spiral case.Rotor is coaxially connected with left turbine and right turbine by rotor mandrel
Connect.Left and right journal bearing component is provided with motor casing, journal bearing component includes radial axle bearing, journal bearing, left bearing position
With journal bearing gland, journal bearing is paillon foil formula kinetic pressure gas journal bearing.In motor casing right side provided with interior thrust shaft block,
Outer thrust shaft block and thrust button, are provided with interior thrust bearing, thrust button and outer thrust shaft between interior thrust shaft block and thrust button
Outer thrust bearing is provided between bearing.Interior thrust bearing and outer thrust bearing and journal bearing are that paillon foil formula kinetic pressure gas stops
Thrust bearing.The prior art, heritage answers the parts such as the rotor bar of asynchronous machine, punching at high speeds easily because tension is excessive
And destroy, so maximum speed is very limited, and compared with magneto, power density is small, efficiency is low, economical operation model
Enclose narrow.
The Chinese invention patent application of Application No. 201610327807.5 discloses a kind of ultrahigh speed air blower, its turn
Follower link is the cylinder-like structure with a cavity, and rotating connector is set in the rotating shaft of impeller and and impeller
Mutually it is connected respectively with roller end, its sidepiece is located in the cavity formed by the outer barrel of housing with inner cylinder；Slot type dynamic pressure
Gas lubricated journal bearing and rotating shaft are respectively positioned on the inner cylinder intracavitary of housing, and slot type kinetic pressure gas journal bearing is set in rotating shaft.Should
Prior art, motor rotor construction is complicated, not compact.
The Chinese invention patent of Application No. 201310703932.8 discloses a kind of exhaust turbine generator, and it is driven single
In member, one end that axle is connected with turbine is defined as front end, and the other end of axle is defined as rear end.Turbine and axle be fixed after when
Can just axle be driven to be rotated during turbine rotation.Sleeve is installed, sleeve and axle are connected using key, be provided with sleeve on axle
Thrust disc.Sleeve is provided with axle between sleeve and turbine, set above-mentioned sleeve can fix above-mentioned set axially further
Cylinder and thrust disc.The prior art, using solid spindle, then rotating shaft quality is larger, and foil bearing carries Impeller Mass by very
Big limitation.Elongated pull rod is set, then pull bar draw ratio is big, difficulty of processing is big, and poor rigidity in sleeve.Using the easy production of key connection
Raw extra unbalance dynamic power, is not suitable for high speed situation.
Application No. 201610296970.X Chinese invention patent application discloses the two of a kind of fuel battery engines
Level series boosting directly takes centrifugal air compressor, and main shaft uses hollow main shaft, the equal built-in screw rod in two ends of main shaft, screw rod respectively with a left side
End impeller and right-hand member impeller are fixed by pre-load nut, and are bonded using High-strength glue.The prior art, is not adopted
Cause core length longer with solid permanent magnet, rotor dynamics are poor.Spindle central bore dia is than pull rod screw diameter
Small, weight loss effect is not obvious.
The content of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art there is provided one kind optimization with foil air bearing
Rotor performance method, it can optimize the dynamics of rotor.
In order to solve the above technical problems, the present invention uses following technical scheme：A kind of turn optimized with foil air bearing
The method of sub- performance, solid permanent magnet is set to by the permanent magnet of rotor, and a front end rotating shaft is connected in solid permanent magnet one end,
A rear end rotating shaft is connected in the solid permanent magnet other end, foil air bearing before being installed in the rotating shaft of front end, in rear end rotating shaft
On install successively radical-thrust joint foil air bearing, L-shaped thrust disc, thrust foil air bearing；By protective case by before
End rotating shaft, solid permanent magnet, rear end rotating shaft link into an integrated entity, and protective case is sleeved on front end using interference fit connecting mode and turned
Axle, solid permanent magnet, in the rotating shaft of rear end, match somebody with somebody by the interference between protective case and front end rotating shaft, solid permanent magnet, rear end rotating shaft
Close connection and realize transmitting forward, backward for moment of torsion, it is real to combine foil air bearing by preceding foil air bearing and radical-thrust
Now to the carrying of radial load, L-shaped thrust disc combines the connection of foil air bearing and thrust foil air bearing in radical-thrust
Carrying of the cooperation with lower realization to axial load.
Rotor with foil air bearing is arranged to high-speed blower foil air bearing and supports solid set of permanent magnets
Box-like rotor, to realize the optimization of the rotor performance with foil air bearing；High-speed blower foil air bearing branch
Support the box-like rotor of solid set of permanent magnets, including receded disk impeller, solid permanent magnet, pull bar, preceding foil air bearing, front end turn
Axle, protective case, rear end rotating shaft, radical-thrust joint foil air bearing, L-shaped thrust disc, thrust foil air bearing；The reality
Left end connection front end rotating shaft, the right-hand member connection rear end rotating shaft of heart permanent magnet；The pull bar connects front end rotating shaft, receded disk impeller peace
On pull bar, receded disk impeller is connected as a single entity by pull bar with front end rotating shaft；Preceding foil air bearing is arranged on front end rotating shaft
Left end；Protective case is sleeved in front end rotating shaft, solid permanent magnet and rear end rotating shaft；Radical-thrust joint foil air bearing, L-shaped
Thrust disc, thrust foil air bearing are sequentially arranged at the right-hand member of rear end rotating shaft from left to right；The protective case and solid permanent magnetism
Connecting mode between body, between protective case and front end rotating shaft, between protective case and rear end rotating shaft is that interference fit couples.
The solid permanent magnet uses the structure type of solid cylinder, so as to improve the rigidity of rotor-support-foundation system.
The front end rotating shaft and rear end rotating shaft are hollow-type structure, by using hollow-type structure to reduce front end rotating shaft
With the quality of rear end rotating shaft；The right-hand member of front end rotating shaft is blind end；Pull bar is inserted in the centerline of front end rotating shaft, pull bar right-hand member
It is connected with front end rotating shaft right-hand member, receded disk impeller is connected to the left end of pull bar；The protective case be sleeved on right section of front end rotating shaft, after
Hold on left section of rotating shaft and solid permanent magnet.
The receded disk impeller is connected as a single entity by impeller fixing nut, pull bar and front end rotating shaft, impeller fixing nut peace
On pull bar, it is identical with receded disk impeller rotation direction that impeller fixing nut screws direction；The protective case using stainless steel,
Titanium alloy or carbon fibre material；The L-shaped thrust disc is arranged in the rotating shaft of rear end by thrust disc locking nut.
Can also be that the front end rotating shaft and rear end rotating shaft are hollow-type structure, be provided with inside the rotating shaft stage casing of front end with
The radial direction block that front end rotating shaft is integrally connected；Pull bar is inserted in the centerline of front end rotating shaft, and pull bar right-hand member is connected on radial direction block,
Receded disk impeller is connected to the left end of pull bar.
By using L-shaped thrust disc, to ensure the precision of cone match and the length of mating surface.
By shortening pull bar length and reduction pull bar draw ratio, to improve pull bar rigidity.
The high-speed blower that the present invention is used supports the solid box-like rotor of set of permanent magnets with foil air bearing, and structure is tight
Gather, quality is small and rotor dynamics are excellent, provided effectively to develop high rotating speed, long-life single-stage associated mode air blower
Implementation.Beneficial effects of the present invention are specific as follows：1st, impeller and rotating shaft are combined into one by pull bar, compact conformation；2、
Rotor largely employs hollow loss of weight optimization structure, it is ensured that air bearing possesses enough bearing capacitys；3rd, solid cylinder is forever
Magnet combination rotor, overcomes built-in rotor permanent magnet and the not enough shortcoming of iron core intensity under high-speed condition；4th, permanent magnet
Using the structure type of solid cylinder, enough magnetomotive force can be provided using shorter permanent magnet as motor magnetic circuit, reduced forever
The difficulty of magnet processing, improves permanent magnet processing technology, can shorten the span between front and back bearings again, turns so as to improve
The rigidity of subsystem, it is ensured that the safe operating area of motor is broad enough, and then ensure that the reliability of motor.5th, protective case with
Interference fit between permanent magnet avoids destruction of the permanent magnet under high speed centrifugation action of pulling stress；6th, thrust disc is designed as
" L " shape, it is ensured that the length of mating surface, it is ensured that the precision of cone match.
Brief description of the drawings
Fig. 1 supports the knot of the solid box-like rotor of set of permanent magnets for the high-speed blower foil air bearing in embodiment one
Structure schematic diagram；
Fig. 2 is that the high-speed blower foil air bearing in embodiment two supports the structure of the solid box-like rotor of set of permanent magnets to show
It is intended to；
In figure：1st, pull bar；2nd, impeller fixing nut；3rd, receded disk impeller；4th, preceding foil air bearing；5th, front end rotating shaft；6th, protect
Sheath；7th, solid permanent magnet；8th, rear end rotating shaft；9th, radical-thrust joint foil air bearing；10th, L-shaped thrust disc；11st, thrust
Foil air bearing；12nd, thrust disc locking nut.
Embodiment
Embodiment one：
A kind of method for optimizing the rotor performance with foil air bearing, height is fabricated to by the rotor design with foil air bearing
Fast air blower supports the solid box-like rotor of set of permanent magnets with foil air bearing.By protective case by front end rotating shaft, solid permanent magnetism
Body, rear end rotating shaft link into an integrated entity, by protective case using interference fit connecting mode be sleeved on front end rotating shaft, solid permanent magnet,
In the rotating shaft of rear end, couple by the interference fit between protective case and front end rotating shaft, solid permanent magnet, rear end rotating shaft and realize moment of torsion
Transmit forward, backward, by preceding foil air bearing and radical-thrust joint foil air bearing realize to radial load
Carrying, the realization pair under the synergy that radical-thrust combines foil air bearing and thrust foil air bearing of L-shaped thrust disc
The carrying of axial load.
Fig. 1 is refer to, above-mentioned high-speed blower supports the solid box-like rotor of set of permanent magnets with foil air bearing, including：
Pull bar 1, impeller fixing nut 2, receded disk impeller 3, preceding foil air bearing 4, front end rotating shaft 5, protective case 6, solid permanent magnet
7th, rear end rotating shaft 8, radical-thrust joint foil air bearing 9, L-shaped thrust disc 10, thrust foil air bearing 11, thrust disc lock
Tight nut 12.Left end connection front end rotating shaft, the right-hand member connection rear end rotating shaft of the solid permanent magnet；Pull bar is inserted in front end rotating shaft
Centerline, pull bar right-hand member is connected with front end rotating shaft right-hand member, and receded disk impeller is connected to the left end of pull bar.Receded disk impeller is pacified
On pull bar, receded disk impeller is connected as a single entity by impeller fixing nut, pull bar and front end rotating shaft, and impeller fixing nut is installed
On pull bar, it is identical with receded disk impeller rotation direction that impeller fixing nut screws direction.Before preceding foil air bearing is arranged on
Hold rotating shaft left end；Solid permanent magnet is cylindrical structural, and protective case is sleeved on right section of front end rotating shaft, solid permanent magnet, rear end turn
On left section of axle；Connection between protective case and solid permanent magnet, between protective case and front end rotating shaft, between protective case and rear end rotating shaft
The mode of connecing is interference fit connection.Radical-thrust joint foil air bearing, thrust disc, thrust foil air bearing from a left side to
The right side is sequentially arranged at the right-hand member of rear end rotating shaft.Front end rotating shaft and rear end rotating shaft are hollow-type structure（Emptied inside rotating shaft or portion
Divide and empty, rotating shaft is hollow cylindrical-shaped structure）, rotating shaft two ends can be set to blind end.
Front end rotating shaft is connected as a single entity by pull bar with impeller, and delivers torque to leaf by the end-face friction between them
Wheel, so as to realize that impeller does work to air.The fixation of impeller and pull bar leans on the threaded connection opposite with impeller direction of rotation to realize,
To avoid the wriggling produced in the case where high speed inertia force is acted on from releasing.Front end rotating shaft, rear end rotating shaft employ open-core type as much as possible
Structure compensate for the low deficiency of air bearing bearing capacity to mitigate rotating shaft quality.Solid permanent magnet uses the knot of solid cylinder
Configuration formula, can provide enough magnetomotive force using shorter permanent magnet as motor magnetic circuit, reduce the difficulty of solid permanent magnet processing
Degree, improves permanent magnet processing technology, can shorten the span between front and back bearings again, so as to improve the firm of rotor-support-foundation system
Degree, it is ensured that the safe operating area of motor is broad enough, and then ensure that the reliability of motor.
Interference fit joint is used between solid cylinder permanent magnet and protective case, to avoid permanent magnet by excessive high speed centrifugation
Tension and damage.By the interference fit between protective case and front end rotating shaft, rear end rotating shaft realize moment of torsion forward,
Transmit backward.By interference fit, protective case, front end rotating shaft, solid permanent magnet, rear end rotating shaft are linked into an integrated entity（By protecting
Sheath links into an integrated entity front end rotating shaft, solid permanent magnet, rear end rotating shaft）.Wherein protective case can use stainless steel, titanium alloy
Or the material such as carbon fiber.The forward foil air bearing of composite fabricated rotor and radical-thrust joint foil air bearing carrying are radially carried
Lotus.L-shaped thrust disc is realized to axle under the synergy that radical-thrust combines foil air bearing and thrust foil air bearing
To the carrying of load.In order to ensure the precision of cone match, therefore, to assure that the length of mating surface, therefore thrust disc is designed as " L "
Shape.Rotating shaft right-hand member in rear end is provided with the screw thread matched with thrust disc locking nut, and L-shaped thrust disc is pacified by thrust disc locking nut
In the rotating shaft of rear end.
Characteristic of the invention based on foil air bearing high speed light loading, contemplates a kind of box-like rotor of solid set of permanent magnets,
Simplify rotor structure, reduce rotating shaft quality, shorten bearing span, improve rotor rigidity, be advantageously implemented centrifugal
The high speed of air blower, high-power.
Rotor assembly of the present invention suitable for the direct-driven high-speed motor needed for horizontal blowing plant.
The present invention is applied to foil air bearing replacing with pressure-feed air bearing or rigid bearing shell self-acting air bearing
Occasion.
High-speed centrifugal blower supports the manufacture method of the solid box-like rotor of set of permanent magnets with foil air bearing, including such as
Lower step：
Step one：Prepare and make parts, including pull bar, impeller fixing nut, receded disk impeller, preceding foil air bearing,
Front end rotating shaft, protective case, solid permanent magnet, rear end rotating shaft, radical-thrust joint foil air bearing, L-shaped thrust disc, thrust paper tinsel
Piece air bearing, thrust disc locking nut；Wherein, solid permanent magnet is fabricated to cylindrical base solid structure, and front end rotating shaft and rear end turn
Axle is fabricated to hollow-type structure, and the left end of pull bar processes the screw thread for installing impeller fixing nut, thread rotary orientation and impeller
Direction of rotation is opposite（So that impeller fixing nut tightening direction is identical with impeller direction of rotation）, rear end rotating shaft right-hand member, which is processed, to be used for
The screw thread of installed thrust disk locking nut；
Step 2：Assembled, including as follows step by step：
1st, protective case is sleeved in front end rotating shaft, solid permanent magnet and rear end rotating shaft；Between protective case and solid permanent magnet, protect
Connecting mode between sheath and front end rotating shaft, between protective case and rear end rotating shaft is that interference fit couples；
2nd, preceding foil air bearing is arranged on front end rotating shaft left end；
3rd, by radical-thrust combine foil air bearing, thrust disc, thrust disc locking nut, thrust foil air bearing from a left side to
The right side is sequentially arranged at the right-hand member of rear end rotating shaft；
4th, pull bar is connected into front end rotating shaft, receded disk impeller is arranged on pull bar so that receded disk impeller passes through pull bar and front end
Rotating shaft is connected as a single entity；
5th, impeller fixing nut is arranged on pull bar left end and tightened；
6th, assembling is completed.
Embodiment two：
Fig. 2 is refer to, the further improvement of such scheme is used as：It is provided with and is integrally connected with front end rotating shaft inside the rotating shaft stage casing of front end
Radial direction block；Pull bar is inserted in the centerline of front end rotating shaft, and pull bar right-hand member is connected on radial direction block, further shortens pull bar long
Degree, reduces pull bar draw ratio（Correspondingly, the structure of front end rotating shaft has made the improvement being engaged with pull bar, equally, and manufacture is installed
When, pull bar will also make corresponding change to the connection of front end rotating shaft）, improve pull bar processing technology and pull bar rigidity, it is to avoid Yin La
Rotor intrinsic frequency is reduced caused by bar poor rigidity.Other are identical with embodiment one.
Although preferably embodiment is illustrated as above by the present invention, but is not limited in the present invention.Appoint
What those skilled in the art, in the case where not departing from technical solution of the present invention scope, all using the disclosure above
Technology contents make many possible variations and modification to technical solution of the present invention, or are revised as the equivalence enforcement of equivalent variations
Example.Therefore, every content without departing from technical solution of the present invention, according to the technology of the present invention essence to made for any of the above embodiments
What simple modification equivalent variations and modification, all should belong to the scope of technical solution of the present invention protection.
Claims (8)
1. a kind of method for optimizing the rotor performance with foil air bearing, it is characterized in that, the permanent magnet of rotor is set to reality
Heart permanent magnet, a front end rotating shaft is connected in solid permanent magnet one end, and a rear end rotating shaft is connected in the solid permanent magnet other end,
Foil air bearing before being installed in the rotating shaft of front end, installs radical-thrust joint foil air bearing, L successively in the rotating shaft of rear end
Shape thrust disc, thrust foil air bearing；Front end rotating shaft, solid permanent magnet, rear end rotating shaft are linked into an integrated entity by protective case,
Protective case is sleeved on front end rotating shaft, solid permanent magnet, in the rotating shaft of rear end using interference fit connecting mode, by protective case with before
Transmitting forward, backward for moment of torsion is realized in interference fit connection between end rotating shaft, solid permanent magnet, rear end rotating shaft, by preceding paper tinsel
Piece air bearing and radical-thrust joint foil air bearing realize the carrying to radial load, and L-shaped thrust disc is in radical-thrust
The carrying to axial load is realized under the synergy of joint foil air bearing and thrust foil air bearing.
2. the method for rotor performance of the optimization with foil air bearing according to claim 1, it is characterized in that, will be with paillon foil
The rotor of air bearing is arranged to high-speed blower foil air bearing and supports the solid box-like rotor of set of permanent magnets, to realize band
The optimization of the rotor performance of foil air bearing；The high-speed blower supports solid set of permanent magnets box-like with foil air bearing
Rotor, including receded disk impeller, solid permanent magnet, pull bar, preceding foil air bearing, front end rotating shaft, protective case, rear end rotating shaft,
Radical-thrust joint foil air bearing, L-shaped thrust disc, thrust foil air bearing；The left end connection of the solid permanent magnet
Front end rotating shaft, right-hand member connection rear end rotating shaft；The pull bar connects front end rotating shaft, and receded disk impeller is arranged on pull bar, centrifugal
Impeller is connected as a single entity by pull bar with front end rotating shaft；Preceding foil air bearing is arranged on front end rotating shaft left end；Protective case is sleeved on
In front end rotating shaft, solid permanent magnet and rear end rotating shaft；Radical-thrust joint foil air bearing, L-shaped thrust disc, thrust paillon foil are empty
Gas bearing is sequentially arranged at the right-hand member of rear end rotating shaft from left to right；Between the protective case and solid permanent magnet, protective case with before
Connecting mode between the rotating shaft of end, between protective case and rear end rotating shaft is that interference fit couples.
3. the method for rotor performance of the optimization with foil air bearing according to claim 2, it is characterized in that, it is described solid
Permanent magnet uses the structure type of solid cylinder, so as to improve the rigidity of rotor-support-foundation system.
4. the method for rotor performance of the optimization with foil air bearing according to claim 2, it is characterized in that, the front end
Rotating shaft and rear end rotating shaft are hollow-type structure, by using hollow-type structure to reduce the matter of front end rotating shaft and rear end rotating shaft
Amount；The right-hand member of front end rotating shaft is blind end；Pull bar is inserted in the centerline of front end rotating shaft, pull bar right-hand member and front end rotating shaft right-hand member
Connection, receded disk impeller is connected to the left end of pull bar；The protective case is sleeved on right section of front end rotating shaft, left section of rear end rotating shaft and reality
On heart permanent magnet.
5. the method for rotor performance of the optimization with foil air bearing according to claim 2, it is characterized in that, the centrifugation
Formula impeller is connected as a single entity by impeller fixing nut, pull bar and front end rotating shaft, and impeller fixing nut is arranged on pull bar, and impeller is solid
Determine nut direction identical with receded disk impeller rotation direction；The protective case uses stainless steel, titanium alloy or carbon fiber material
Material；The L-shaped thrust disc is arranged in the rotating shaft of rear end by thrust disc locking nut.
6. the method for rotor performance of the optimization with foil air bearing according to claim 2, it is characterized in that, the front end
Rotating shaft and rear end rotating shaft are the radial direction block for being provided with and being integrally connected with front end rotating shaft inside hollow-type structure, front end rotating shaft stage casing；
Pull bar is inserted in the centerline of front end rotating shaft, and pull bar right-hand member is connected on radial direction block, and receded disk impeller is connected to a left side for pull bar
End.
7. the method for rotor performance of the optimization with foil air bearing according to claim 1, it is characterized in that, by using
L-shaped thrust disc, to ensure the precision of cone match and the length of mating surface.
8. the method for rotor performance of the optimization with foil air bearing according to claim 1, it is characterized in that, by shortening
Pull bar length and reduction pull bar draw ratio, to improve pull bar rigidity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710716779.0A CN107313962A (en) | 2017-08-21 | 2017-08-21 | A kind of method for optimizing the rotor performance with foil air bearing |
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| CN201710716779.0A CN107313962A (en) | 2017-08-21 | 2017-08-21 | A kind of method for optimizing the rotor performance with foil air bearing |
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| CN107313962A true CN107313962A (en) | 2017-11-03 |
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| CN201710716779.0A Pending CN107313962A (en) | 2017-08-21 | 2017-08-21 | A kind of method for optimizing the rotor performance with foil air bearing |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108457872A (en) * | 2018-02-02 | 2018-08-28 | 嘉兴德燃动力系统有限公司 | A kind of hollow spindle two stages of compression centrifugal air compressor of band connection trunnion |
| CN110439847A (en) * | 2019-08-30 | 2019-11-12 | 广州市昊志机电股份有限公司 | Centrifugal compressor shafting structure and centrifugal compressor |
| CN110594284A (en) * | 2019-09-25 | 2019-12-20 | 江苏恒军动力科技有限公司 | Radial air bearing and assembly of micro gas turbine generator and installation method of radial air bearing and assembly |
| CN111365293A (en) * | 2018-12-25 | 2020-07-03 | 珠海格力电器股份有限公司 | Compressor rotors, compressors and air conditioning equipment |
| CN111371216A (en) * | 2018-12-25 | 2020-07-03 | 珠海格力电器股份有限公司 | Compressor rotors, compressors and refrigerant circulation systems |
| CN115891583A (en) * | 2022-12-28 | 2023-04-04 | 华涧新能源科技(上海)有限公司 | Automobile air conditioning system based on air flotation centrifugal compressor |
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| US7063519B2 (en) * | 2002-07-02 | 2006-06-20 | R & D Dynamics Corporation | Motor driven centrifugal compressor/blower |
| CN105889096A (en) * | 2016-05-06 | 2016-08-24 | 同济大学 | Two-stage series pressurization direct-driven centrifugal air compressor of fuel cell engine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108457872A (en) * | 2018-02-02 | 2018-08-28 | 嘉兴德燃动力系统有限公司 | A kind of hollow spindle two stages of compression centrifugal air compressor of band connection trunnion |
| CN111365293A (en) * | 2018-12-25 | 2020-07-03 | 珠海格力电器股份有限公司 | Compressor rotors, compressors and air conditioning equipment |
| CN111371216A (en) * | 2018-12-25 | 2020-07-03 | 珠海格力电器股份有限公司 | Compressor rotors, compressors and refrigerant circulation systems |
| CN111365293B (en) * | 2018-12-25 | 2025-09-09 | 珠海格力电器股份有限公司 | Compressor rotor, compressor and air conditioning equipment |
| CN110439847A (en) * | 2019-08-30 | 2019-11-12 | 广州市昊志机电股份有限公司 | Centrifugal compressor shafting structure and centrifugal compressor |
| CN110594284A (en) * | 2019-09-25 | 2019-12-20 | 江苏恒军动力科技有限公司 | Radial air bearing and assembly of micro gas turbine generator and installation method of radial air bearing and assembly |
| CN115891583A (en) * | 2022-12-28 | 2023-04-04 | 华涧新能源科技(上海)有限公司 | Automobile air conditioning system based on air flotation centrifugal compressor |
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Application publication date: 20171103 |