CN110107503A - A kind of scroll machine and its electromagnetic mechanism - Google Patents
A kind of scroll machine and its electromagnetic mechanism Download PDFInfo
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- CN110107503A CN110107503A CN201910464820.9A CN201910464820A CN110107503A CN 110107503 A CN110107503 A CN 110107503A CN 201910464820 A CN201910464820 A CN 201910464820A CN 110107503 A CN110107503 A CN 110107503A
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- iron core
- scroll
- magnetic circuit
- suction foot
- core suction
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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
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0021—Systems for the equilibration of forces acting on the pump
Abstract
The invention discloses a kind of scroll machine and its electromagnetic mechanism, which includes control unit, detection part and control execution unit；Detection part, including pressure detecting part and roll angle inspection part；Control execution unit, including the first magnetic circuit iron core being fixed on movable orbiting scroll and the second magnetic circuit iron core being fixed in fixed scroll, it is uniformly fixed with multiple first iron core suction foots on the first magnetic circuit iron core, multiple second iron core suction foots are uniformly fixed on the second magnetic circuit iron core；Multiple exciting parts are also evenly arranged on the second magnetic circuit iron core, each exciting part is spaced apart enough with each second iron core suction；The control unit adjusts accordingly the electric current in exciting part according to the testing result of detection part, by generating the axial gas power in axial electromagnetic force counteracting scroll machine.The electromagnetic mechanism, which can be realized, ensures that the inability between movable orbiting scroll and fixed scroll contacts, and can guarantee sealing between the two.
Description
Technical field
The present invention relates to scroll machine axial gas power control technology, a kind of scroll machine and its electromagnetic mechanism are provided, for adjusting
Contact force between section and balance scroll machine movable orbiting scroll and fixed scroll.
Background technique
Scroll machine is a kind of by means of the fluid machinery of volume changed to realize gas compression, and internal structure is mainly wrapped
Include fixed scroll, movable orbiting scroll, bracket, eccentric shaft and anti-rotation mechanism, wherein movable orbiting scroll and fixed scroll eccentric setting, with dynamic whirlpool
Disk is rotated by eccentric shaft, and the gas between movable orbiting scroll and fixed scroll is converged to middle part or periphery diffusion, to realize
The function of compressor or expanding machine.
Relative to other compressor/expanding machines, scroll machine has quantity of gas leakage few, small in size, light-weight, sustainable work
It is long to make the time, and the advantages such as total noise of centrifuge is low, but due to matching between the movable orbiting scroll and fixed scroll of scroll machine at upper and lower fastening structure
It closes, contact elasticity between the two is determined by assembly, and pine will lead to gas leakage excessively, and tension will lead in work mill early period
Damage, fever are serious, and working efficiency is low, and contact surface still can gradually fluff after the long period, leakage etc. can be caused to cause bad
Therefore consequence in existing scroll machine structure, sets quick condition for movable orbiting scroll, i.e., movable orbiting scroll is in rotary course quiet
Along axial floating between whirlpool disk and bracket.When movable orbiting scroll high-speed rotation, very big axial gas power effect, and the axis are born
To gas force with angle of eccentricity and gas pressure change, for this purpose, under normal circumstances, by adding axial gas power in scroll machine
Control mechanism balances the axial gas power.Currently, common axial gas power control mechanism is as follows:
1) spring back-pressure scheme: spring is installed at whirlpool disk (generally movable orbiting scroll) back side, this structure implements opposite side
Just, but pressure is non-adjustable, and spring and whirlpool disk are also rubbed to material lifetime under a large pressure with larger challenge, are also brought along
On spring works face the problems such as frictional dissipation；
2) thrust bearing scheme: i.e. in scroll plate back side installed thrust bearing, machinery positioning is realized；Using the structure to whirlpool
Disk carries out axial position and fixes, and can not achieve the automatic compensation of axial gap, it is difficult to balance is obtained between sealing and small pressure,
And many occasions (such as high-pressure unit field) are difficult to find that suitable thrust bearing；
3) gas backpressure chamber scheme: applying certain gas pressure at the whirlpool disk back side, and the pressure in back pressure cavity is with similar chamber
The rule of interior gas variation is changed with corner, although this structure can offset the axial direction of intracavity gas outward by a relatively large margin
Pressure, but the resultant force of the two still has the remnants of larger specific gravity, and resultant force is related to corner, there is still larger friction or lets out
The problem of dew, exists, and is unfavorable for the stable rotation of scroll plate；
4) binary vortices body whirlpool disk scheme: on the circular slab two sides of movable orbiting scroll setting scroll molded line geometric parameter is identical,
Lower two vortexes, correspondingly there are two fixed scroll is matched, such as the matching of the movable orbiting scroll of a fixed scroll and single vortex
Identical, the vortex of another fixed scroll then directly generates on bracket, i.e., support body plays the role of fixed scroll simultaneously.?
In the screw compressor of this structure, axial gas power suffered by the upper and lower vortex of movable orbiting scroll is equal in magnitude, contrary,
So axial gas power suffered by movable orbiting scroll is automatically derived complete equipilibrium, but this structure is from the point of view of point of theory, binary vortices body
The axial gas power that is subject to of two movable orbiting scrolls can cleverly offset each other；After counteracting, during actual implementation, quiet whirlpool
Disk and movable orbiting scroll contact surface assembly precision it is more difficult to control, contact tight abrasion and heat dissipation be just more, contact pine and be easy to leak.
If fixed installation, the state of contact surface is difficult to adjust because abrasion changes after working long hours；It is installed if axial floating, it is clear that
It can only be realized by fixed scroll axial floating, also need back pressure control, and two whirlpool disk back pressures increase complexity.
In addition, " oil-free turbo-compressor key technology research " (your paulownia of Shenyang University of Technology sinus etc., 2017.06.02) one
Wen Zhong, proposes a kind of oilless (oil free) compressor using plane electromagnetic drive, which proposes electromagnetic force control compared with have a new meaning
Scheme, and controlled in the control of axial gas power using electromagnetic force, the program using distributed 3 positions electromagnetic force knot
Structure can effectively solve above-mentioned contact friction problem, but the program has increased considerably the area in movable orbiting scroll machine plane, thus bright
It is aobvious to increase rotary inertia, reduce the dynamic property of vortex systems；In addition, the structure needs to carry out by force feedback signal
The control of electromagnetic force, but the high-precision mechanism to such gap less than 10, the method for installing device for force feedback increase structure
Complexity, installation difficulty and cost, while also reducing system reliability and service life；It is only pushed away with gas when being used as expanding machine
It is especially difficult to promote speed promotion working efficiency when dynamic scrollwork rotation.
In addition, above structure is in some occasions for needing heat to be isolated, performance difficulty, and ineffective.
Based on above-mentioned, in the axial gas power control program of existing scroll machine, or axial gas power cannot be completely counterbalanced by
Influence, or after axial gas power is offset, the dynamic property of scroll machine is reduced, therefore, it is necessary to provide a kind of for controlling
The electromagnetic mechanism of scroll machine axial gas power processed, keeps its assembling structure simple as far as possible, while offsetting axial gas power, guarantees
The dynamic property of scroll machine.
Summary of the invention
In order to solve the above-mentioned technical problem, it is an object of the invention to: provide a kind of electromagnetic mechanism of scroll machine, the electromagnetism
Mechanism offsets the axial gas power in working chamber by generating axial electromagnetic force, so that it is guaranteed that nothing between movable orbiting scroll and fixed scroll
Power contact, and can guarantee sealing between the two.
The second object of the present invention is: providing a kind of scroll machine, which carries out axial using above-mentioned electromagnetic mechanism
Gas force control.
To achieve the goals above, one aspect of the present invention provides a kind of electromagnetic mechanism of scroll machine, the electromagnetic mechanism
Including control unit, detection part and control execution unit；Wherein:
Detection part, including pressure detecting part and roll angle inspection part, the pressure detecting part are set to the exhaust of scroll machine
At mouthful, for detecting the exhaust pressure value of scroll machine exhaust outlet, the roll angle inspection part is set at the drive shaft of scroll machine, is used
In the corner information of detection movable orbiting scroll；
Execution unit is controlled, including the first magnetic circuit iron core being fixed on movable orbiting scroll and the second magnetic being fixed in fixed scroll
Road iron core is fixed with multiple first iron core suction foots on the first magnetic circuit iron core, is fixed on the second magnetic circuit iron core more
A second iron core suction foot；The first iron core suction foot is identical as the second iron core suction foot quantity and right above and below the two position
It answers；Multiple exciting parts are additionally provided on the second magnetic circuit iron core, each exciting part and each second iron core suction are spaced enough
Distribution；
The control unit is connect with the detection part and exciting part respectively, and control unit is according to detection part
Testing result adjusts accordingly the electric current in exciting part, so that the first iron core suction foot and the second iron core suction
Axial gas power in axial electromagnetic force and scroll machine between foot is cancelled out each other.
Preferably, the bottom surface of the first iron core suction foot and the top surface of the second iron core suction foot are plane, and the
The bottom area of one iron core suction foot less than the second iron core suction foot topside area, when the first magnetic circuit iron core follow movable orbiting scroll turn
When dynamic, in the range of the bottom surface of the first iron core suction foot is fallen in always right above the second iron core suction foot, thus when the first iron core
When shift in position occurs enough for suction, the magnetic resistance passed through on cross section is constant, reduces influence of the horizontal fluctuation to magnetic resistance.
Preferably, the exciting part includes magnet exciting coil；
Alternatively, the exciting part includes permanent magnet and magnet exciting coil.
Preferably, the first iron core suction foot and the second iron core suction are column structure enough.
Preferably, the first magnetic circuit iron core and the second magnetic circuit iron core are ring-type.
Preferably, the first magnetic circuit iron core is ring-type；The second magnetic circuit iron core includes magnetic circuit iron core middle part and magnetic
Road core ends, wherein fixed in the middle part of the magnetic circuit iron core of the second magnetic circuit iron core with fixed scroll, end extend out to fixed scroll
Outside, the exciting part is set on the end of the second magnetic circuit iron core.
Preferably, the first iron core suction is embedded in enough in the side wall of movable orbiting scroll, and the lower end surface of the first iron core suction foot
It is flush with the lower end surface of movable orbiting scroll side wall；The second magnetic circuit iron core is set to the lower section of the first iron core suction foot, and
Second iron core suction is set to the underface of the first iron core suction foot enough.
Preferably, the pressure detecting part includes the pressure sensor for being set to scroll machine exhaust outlet, the corner inspection
Surveying part includes the rotary angle transmitter being set at movable orbiting scroll drive shaft, the pressure sensor and the rotary angle transmitter with control
Component connection processed.
Preferably, control circuit includes pressure signal Acquisition Circuit, angular signal Acquisition Circuit and current regulation electricity
Road, wherein pressure signal Acquisition Circuit is separately connected pressure detecting part and controller, the row for detecting pressure detecting part
Air pressure force value is transmitted to controller；Angular signal Acquisition Circuit is separately connected roll angle inspection part and controller, for examining corner
The corner value for surveying the movable orbiting scroll that part detects is transmitted to controller；Current regulating circuit connects with controller and exciting part respectively
It connects, for being regulated and controled according to the output of controller order to the size of current in exciting part.
Preferably, the control unit includes controller and control circuit, the controller passes through the control circuit
It is connect respectively with the pressure detecting part, roll angle inspection part and exciting part.
Another aspect of the present invention provides a kind of scroll machine, the scroll machine include movable orbiting scroll, fixed scroll and as described above
Electromagnetic mechanism, the scroll machine offset between movable orbiting scroll and fixed scroll by the axial electromagnetic force that the electromagnetic mechanism generates
Axial gas power.
Compared with prior art, the invention has the benefit that
Electromagnetic mechanism provided by the invention fixed scroll side to can axial floating movable orbiting scroll generate axial electromagnetic force, pass through
The axial electromagnetic force offsets axial gas force in working chamber, it is ensured that powerlessly contacts between movable orbiting scroll and fixed scroll, and can guarantee two
Sealing between person, to guarantee the normal work of scroll machine the problems such as preventing the abrasion of material caused by hypertonia, contact surface fever
Under the premise of work, effectively extend the service life of scroll machine.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not constitute the restriction to the application for explaining the application.
Fig. 1 is a kind of structural schematic diagram of the electromagnetic mechanism of scroll machine provided in an embodiment of the present invention；
Fig. 2 is the movable orbiting scroll station variation schematic diagram in Fig. 1 in the electromagnetic mechanism course of work；
Fig. 3 is the structural schematic diagram of the electromagnetic mechanism of another scroll machine provided in an embodiment of the present invention；
Fig. 4 is the movable orbiting scroll station variation schematic diagram in Fig. 3 in the electromagnetic mechanism course of work；
Fig. 5 is the structural schematic diagram of the electromagnetic mechanism of another scroll machine provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of the electromagnetic mechanism of another scroll machine provided in an embodiment of the present invention；
Fig. 7 is a kind of partial sectional view of the assembling structure of the electromagnetic mechanism of scroll machine provided in an embodiment of the present invention；
Fig. 8 (a) is a kind of example of the current regulating circuit of the electromagnetic mechanism of scroll machine provided in an embodiment of the present invention；
Fig. 8 (b) is a kind of electric current tune of the current regulating circuit of the electromagnetic mechanism of scroll machine provided in an embodiment of the present invention
Save schematic diagram；
Fig. 9 is a kind of control method flow chart of the electromagnetic mechanism of scroll machine provided in an embodiment of the present invention；
Figure 10 is a kind of implementing procedure of " control of pressure at expulsion change procedure axial gas power " part in Fig. 9；
Figure 11 is another implementing procedure of " control of pressure at expulsion change procedure axial gas power " part in Fig. 9；
Figure 12 is the flow chart of " the axial gas power control under scroll machine steady-working state " part in Fig. 9；
Figure 13 is a kind of " axial gas power-corner-pressure at expulsion " relation curve provided in an embodiment of the present invention；
Figure 14 is a kind of " electromagnetism air gap-electric current-axial electromagnetic force " relation curve provided in an embodiment of the present invention；
Figure 15 is a kind of electromagnetic mechanism of scroll machine provided in an embodiment of the present invention with electromagnetism air gap searching process
Axial gas power control flow chart；
Figure 16 is the flow chart of the electromagnetism air gap optimization method for the electromagnetic mechanism that the present invention implements a kind of scroll machine provided.
1, movable orbiting scroll；2, fixed scroll；
31, the first magnetic circuit iron core；32, the second magnetic circuit iron core；
311, the first iron core suction foot；321, the second iron core suction foot；322, exciting part.
Specific embodiment
The invention will be further described with embodiment with reference to the accompanying drawing.
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
In addition, in the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ",
" width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
The description present invention and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with spy
Fixed orientation construction and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two
It is a or more than two, unless otherwise restricted clearly.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be machine
Tool connection, is also possible to be electrically connected；It can be directly connected, two members can also be can be indirectly connected through an intermediary
Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in this hair as the case may be
Concrete meaning in bright.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
A kind of electromagnetic mechanism of scroll machine presented below, the electromagnetic mechanism include control unit, control execution unit and inspection
Survey component；Wherein:
Detection part, including pressure detecting part and roll angle inspection part, the pressure detecting part are set to the exhaust of scroll machine
At mouthful, for detecting the exhaust pressure value of scroll machine exhaust outlet, the roll angle inspection part is set at the drive shaft of scroll machine, is used
In the corner value of detection movable orbiting scroll 1；
Execution unit is controlled, including the first magnetic circuit iron core 31 being fixed on movable orbiting scroll 1 and be fixed in fixed scroll 2 the
Two magnetic circuit iron cores 32, are fixed with multiple first iron core suction foots 311 on the first magnetic circuit iron core 31, on the second magnetic circuit iron core 32 uniformly
There are multiple second iron core suction foots 321；First iron core suction foot 311 is identical as the second iron core suction 321 quantity of foot, and the two position
Set correspondence up and down；Multiple exciting parts 322, each exciting part 322 and each second iron are additionally provided on second magnetic circuit iron core 32
Wicking-power foot 321 is spaced apart；
Control unit is connect with detection part and exciting part 322 respectively, and control unit is according to the detection knot of detection part
Fruit adjusts accordingly the electric current in exciting part 322, so that the first iron core suction foot 311 and the second iron core suction
The axial gas power in axial electromagnetic force and scroll machine between foot 321 is cancelled out each other.
It needs to illustrate: position setting principle of multiple first iron core suction foots 311 on the first magnetic circuit iron core 31 are as follows: avoid
First being unevenly distributed for iron core suction foot 311 causes 31 unbalance stress of the first magnetic circuit iron core, therefore above structure can be each
First iron core suction foot 311 is spacedly distributed along the edge of the first magnetic circuit iron core 31, can also be multiple first iron core suction foots
311 along the first magnetic circuit iron core 31 a certain radial symmetric be distributed etc..
This electromagnetic mechanism 2 side of fixed scroll to can axial floating 1 side of movable orbiting scroll generate axial electromagnetic force, pass through the axis
The axial gas power in working chamber is offset to electromagnetic force, it is ensured that is powerlessly contacted between movable orbiting scroll 1 and fixed scroll 2, and be can guarantee two
Sealing between person, to guarantee the normal work of scroll machine the problems such as preventing the abrasion of material caused by hypertonia, contact surface fever
Under the premise of work, effectively extend the service life of scroll machine.In addition, the main body of the electromagnetic mechanism is most of in movable orbiting scroll 1 and quiet
The work of working in coordination along the vertical direction of 2 outer wall of whirlpool disk, the less space occupied in scroll machine are compact-sized.
In a kind of its preferred embodiment, the top of the bottom surface of the first iron core suction foot 311 and the second iron core suction foot 321
Face is plane, and the bottom area of the first iron core suction foot 311 is less than the topside area of the second iron core suction foot 321, when the
When one magnetic circuit iron core 31 follows movable orbiting scroll 1 to rotate, the bottom surface of the first iron core suction foot 311 entirely falls within the second iron core suction always
In the range of right above foot 321, thus when shift in position occurs for the first iron core suction foot 311, the magnetic that passes through on cross section
It hinders constant.The setting principle of this structure is: generating the axis that axial magnetic suction is used to offset gas in the entire period of motion
While to gas force, two component forces of the horizontal direction that electromagnetic mechanism generates are small, can lower to the load of horizontal direction
It influences, reduces the work to whirlpool disc side working face and interfere, therefore the structure has floating especially suitable for part of horizontal direction
Automatically the whirlpool dish structure spent can effectively avoid horizontal direction and generate additional thrust, reduce influence of the horizontal fluctuation to magnetic resistance.
In a kind of its preferred embodiment, as shown in Figure 1, the first iron core suction foot 311 and the second iron core suction foot 321
It is column structure.First iron core suction foot 311 and the second iron core suction foot 321 are elliptic cylindrical shape structure, the two phase up and down
Right, when the first iron core suction foot 311 follows movable orbiting scroll 1 to rotate, change in location is as shown in Fig. 2, the first iron core suction foot 311
It is always positioned in the range of the surface of the second iron core suction foot 321；As shown in figure 3, the first iron core suction foot 311 and the second iron
Wicking-power foot 321 is cylindrical-shaped structure, and the two is opposite up and down, when the first iron core suction foot 311 follows movable orbiting scroll 1 to rotate,
Its change in location is as shown in figure 4, the first iron core suction foot 311 is always positioned at the range of the surface of the second iron core suction foot 321
It is interior.Certainly, in other preferred embodiments, fixed scroll 2 can also be prism-shaped, round table-like etc., and similarly, the first iron core is inhaled
Power foot 311 or prism-shaped or round table-like etc., as long as guaranteeing when the first iron core suction foot 311 follows movable orbiting scroll 1 to rotate,
First iron core suction foot 311 is fully fallen in always in the range of the surface of the second iron core suction foot 321.
In a kind of its preferred embodiment, exciting part 322 is magnet exciting coil, and control unit is according to pressure detecting part
Testing result adjusts accordingly the electric current in magnet exciting coil, so that the first iron core suction foot 311 and the second iron core
The axial gas power in axial electromagnetic force and scroll machine between suction foot 321 is cancelled out each other；
Alternatively, in some embodiments, the structure of exciting part 322 can also develop are as follows: use permanent magnet replacement portion
Shunt opening magnetic coil is realized using permanent magnet and increases magnetic and biasing.This structure is suitable for the larger situation of constant magnetic force accounting, to subtract
Resistance loss on few coil copper wire, reduces the overall volume of electromagnetic mechanism 3.When practical application, according to the ratio of constant force part
Example selection each accounts for comparing, and multi-purpose permanent magnet can reduce the thermal losses on the conducting wire copper in use, is mostly used coil current excitation, can
To increase the range changed.
In a kind of its preferred embodiment, as shown in fig. 7, the first magnetic circuit iron core 31 and the second magnetic circuit iron core 32 are ring
Shape, the first magnetic circuit iron core 31 are fixed on 1 top of movable orbiting scroll, and the first iron core suction foot 311 is embedded in the outer wall of movable orbiting scroll 1, and
Its bottom is exposed outside, and the second magnetic circuit iron core 32 is fixed between movable orbiting scroll 1 and fixed scroll 2,321 top of the second iron core suction foot
With the first iron core suction 311 bottom faces of foot.
When sensitive to heat source outside scroll machine working chamber, it can will be sent out by the Magnetic Circuit Shape of change 2 magnetic part of fixed scroll
The biggish copper coil part of heat is isolated in outside compressor or expanding machine, that is, advantageously reduces working space thermic load, also have
The load density of electric current is improved conducive to the heat dissipation of electromagnetic coil.To achieve the above object, a kind of preferred implementation structure is provided, it will
The structure of second magnetic circuit iron core 32 is developed, specifically, as shown in Figure 5 or Figure 6, the first magnetic circuit iron core 31 is ring-type；Second
The middle part of magnetic circuit iron core 32 be wrapped in 2 both sides external of fixed scroll fan it is cyclic annular, and the both ends of the second magnetic circuit iron core 32 to
It extend out to outside fixed scroll 2 outside；Second iron core suction foot 321 is set on the fan annulus of the second magnetic circuit iron core 32, excitation division
Part 322 is set to the second magnetic circuit iron core 32 and stretches out on the part outside fixed scroll 2, and this structure is relatively suitable for installation environment to line
It encloses in the higher application scenarios of insulation requirement.Certainly, exciting part 322 can be two of diagram, can also be four, six
Deng, quantity according to the magnetic density determination passed through on the second 321 sections vertical with magnetic field of iron core suction foot, preferably even number.
In a kind of its preferred embodiment, the first iron core suction foot 311 is embedded in the side wall of movable orbiting scroll 1, and first
The lower end surface of iron core suction foot 311 and the lower end surface of 1 side wall of movable orbiting scroll are flush, and the second magnetic circuit iron core 32 is set to the first iron core
The lower section of suction foot 311, and the second iron core suction foot 321 is set to the underface of the first iron core suction foot 311.
In a kind of its preferred embodiment, the quantity of the second iron core suction foot 321 is no less than the number of exciting part 322
Amount, and under normal circumstances, for the ease of adjusting the corner posture of movable orbiting scroll 1, first iron core suction the 311, second iron core suction of foot
The quantity of foot 321 and exciting part 322 is preferably even number.
In a kind of its preferred embodiment, pressure detecting part includes the pressure sensor for being set to scroll machine exhaust outlet,
The pressure sensor is connect with control unit, and the pressure value real-time Transmission for the exhaust outlet that will test is to control unit；Corner inspection
Surveying part includes the rotary angle transmitter being set at 1 drive shaft of movable orbiting scroll, which connect with control unit, will test
Movable orbiting scroll 1 corner information real-time Transmission to control unit.
In a kind of its preferred embodiment, control unit includes controller and control circuit connected to it, wherein control
Device processed is preferably STM32F407ZGT6, control circuit mainly include pressure signal Acquisition Circuit, angular signal Acquisition Circuit and
Current regulating circuit is used for specifically, pressure signal Acquisition Circuit is separately connected pressure detecting part and controller by pressure detecting
The exhaust pressure value that part detects is transmitted to controller；Angular signal Acquisition Circuit is separately connected roll angle inspection part and controller,
The corner value of movable orbiting scroll 1 for detecting roll angle inspection part is transmitted to controller；Current regulating circuit respectively with controller
And exciting part 322 connects, for being regulated and controled according to the output of controller order to the size of current in exciting part 322,
Current regulating circuit preferably uses H-bridge circuit, briefly explains the current regulation principle of the circuit with reference to the accompanying drawing:
It as shown in Fig. 8 (a), is loaded in the circuit using resistance sense, io phase lags behind uo, and waveform is also different.When switch V1,
V4 closure, when V2, V3 are disconnected, load voltage uo is positive；When switch V1, V4 are disconnected, and V2, V3 are disconnected, uo zero；Two groups of switches
Component switching frequency is constant, as shown in Fig. 8 (b), changes the duty ratio of output frequency, that is, realizes the adjusting to output electric current；
It above are only principle explanation, those skilled in the art can be designed or be adjusted accordingly to control circuit according to above-mentioned principle
It is whole, restriction of the part description not to control circuit part.
A kind of control method of following electromagnetic mechanisms for providing scroll machine, this method comprises the following steps:
Step (a) is according to current pressure at expulsion P (t) and pre-given electromagnetic air gap σ0, it is bent to obtain " corner-electric current " relationship
Line；It is specific:
It is assumed that axial gas power is equal with axial electromagnetic force, in conjunction with current exhaust pressure P (t) and pre-given electromagnetic air gap σ0,
It will
" axial gas power-corner-exhaust port pressure " relation curve (as shown in figure 13) and " electromagnetism air gap-electric current-axial direction
Electromagnetic force " relation curve is (as shown in figure 14) to be combined, and obtains " corner-electric current " curve；
Wherein, electromagnetism air gap σ0The preferred range of value are as follows: σ0∈ [0.05mm, 0.1mm]；
Wherein, electromagnetism air gap be the first iron core suction foot between the second iron core suction foot along the vertical direction (it is assumed that vertical
In the bottom surface of the first iron core suction foot direction be vertical direction) physics spacing, due to the first magnetic circuit iron core and movable orbiting scroll phase
Fixed, the second magnetic circuit iron core is mutually fixed with fixed scroll, therefore, the adjustment to the electromagnetism air gap, as between dynamic and static vertical axial direction
Away from adjustment.
Step (b) adjusts the electric current I in exciting part, to make electromagnetic motor according to above-mentioned " corner-electric current " relation curve
Axial electromagnetic force in structure offsets the axial gas power；It is specific:
According to " corner-electric current " relation curve, in conjunction with current movable orbiting scroll corner value α (t), electric current I (t) needed for determining, control
Component processed input current I=I (t) into exciting part.
Alternatively, the above method can be with are as follows: default axial gas power safety coefficient γ, according to " corner-electric current " relationship song
Line, in conjunction with current movable orbiting scroll corner value α (t), electric current I (t), control unit input current I=I into exciting part needed for determining
(t) after * γ, wherein γ ∈ [0.9,1.1].
Step (c) judges whether scroll machine is in steady-working state, if so, executing step (d), otherwise, executes step
(a)-(c)；
The pressure at expulsion P (t) of real-time detection scroll machine exhaust outlet, when the exhaust pressure value P (t) of scroll machine exhaust outlet is in
When in the δ of pressure precision section, determine that scroll machine is in steady-working state.
Wherein, the confirmation method of pressure precision section δ are as follows: goal-selling pressure is P0, then the value range of δ are as follows: δ ∈
[P0- 10%P0, P0+ 10%P0]。
Step (d) adjusts in exciting part according to " corner-electric current " relation curve in conjunction with current movable orbiting scroll corner α (t)
Electric current I (t), return again to step (c).
Above-mentioned control method can be simultaneously as the axial gas power during scroll machine starting transformation, braking transformation and pressure stabilizing
Electromagnetic servo strategy, as shown in figure 9, executing " pressure at expulsion change procedure axial gas power control when in scroll machine start-up course
The process that system ", i.e. control system repeat step (a)-step (b), the above process are embodied in program then such as Figure 10 or figure
Shown in 11.
When scroll machine enters steady operational status, then control system repeats " under scroll machine steady-working state
Axial gas power control " process, i.e. step (d) carry out axial directly according to known newest " corner-electric current " relation curve
The adjustment of electromagnetic force, this process are embodied in program then as shown in figure 12.
When scroll machine shut down/brake, pressure at expulsion is gradually changed, and is restored to atmospheric pressure value, this process
In, " the axial gas power of pressure at expulsion change procedure controls " is equally executed, the process of step (a)-step (b) is repeated, this
One process is embodied in program then as shown in Figure 10 or Figure 11.
In above-mentioned control process, so that scroll machine only during transformation, carries out " corner-electric current ", relation curve is really
It is fixed, when being in steady operational status, it is not necessary to " corner-electric current " curve is redefined, to keep the stage calculation amount smaller；One
As in the case of, scroll machine stable operation time much larger than its starting or braking time, thus, the control system totally count
Calculation amount is small.
It needs to illustrate: when the assembly of the overall structure of electromagnetic mechanism finishes, " axial gas power-corner-pressure at expulsion "
Relation curve and " electromagnetism air gap-electric current-axial electromagnetic force " relation curve it has been determined that and be embodied in product description, together
When, also there is loading in control of product program, therefore defaulting above-mentioned curve in the method is it is known that certainly, above-mentioned curve can also
By relevant staff's Determination of The Proper Motions, measuring method is specific as follows:
The measuring method of " axial gas power-corner-pressure at expulsion " relation curve: near target exhaust pressure, measurement
" axial gas power-corner " relation curve gradually improves target exhaust pressure size, surveys near target exhaust pressure as far as possible
Dead axle is to gas force-corner relationship；
The measuring method of " electromagnetism air gap-electric current-axial electromagnetic force " relation curve: in the first iron core suction foot and the second iron
Near theoretical electromagnetic air gap between wicking-power foot, " electric current-axial electromagnetic force " relation curve is measured, electromagnetism air gap is altered in steps
Size may measure electric current-axial electromagnetic force relationship within the scope of electromagnetism air gap as far as possible.
Above-mentioned control method can start the axial gas power electromagnetic servo during transformation and pressure stabilizing as scroll machine simultaneously
Strategy can make scroll machine keep low between movable orbiting scroll and fixed scroll during starting, shutdown, pressure adjustment or pressure stabilizing and contact
Power, high sealing performance, meanwhile, simplify calculating process during stable operation, under the premise of meeting control requirement, reduces control
The calculation amount of component processed realizes the high performance control of full course of work axial electromagnetic force.
Above-mentioned control method is equal to design air gap in application process, by the electromagnetism air gap of actual electromagnetic mechanism, inevitably
Control error can be introduced.The electromagnetism air gap of actual electromagnetic mechanism is influenced by two principal elements:
1) it because of the multiple components of interior design, and designs air gap and is generally set between 0.05 millimeter to 0.1 millimeter,
Error is difficult to avoid that in assembly, and small error will occupy larger proportion in such small scale, seriously affect control effect；
2) in scrollwork work, dynamic and static whirlpool disk Long Term Contact movement, abrasion is also difficult to avoid that these abrasion losses are also required to
Periodically optimization amendment.
For these reasons, the present embodiment also provides a kind of electromagnetism air gap optimization method of the electromagnetic mechanism of scroll machine, should
Method is suitable for the axial gas power electromagnetic control system of powerless sensor feedback, for correcting rigging error and use process
The middle electromagnetic force error because of caused by electromagnetism gap error caused by abrasion.Start incipient stability stage and longtime running in scroll machine
In by automatic optimal current curve, preferred axial electromagnetic force is generated, to balancing axial gas force, it is ensured that dynamic and static whirlpool disk
Low contact force, high leakproofness between face.As shown in figure 15, which includes:
Step (A) pre-given electromagnetic air gap value σ0, combining target pressure P0, generate " corner-electric current " relation curve；It is specific:
Step (A1) is according to " axial gas power-corner-exhaust port pressure " relation curve and goal pressure P0, determine " axis
To gas force-corner " relation curve；
Step (A2) pre-given electromagnetic air gap σ0, according to " electromagnetism air gap-electric current-axial electromagnetic force " relation curve, determine
" electric current-axial electromagnetic force " relation curve；
Axial gas power etc. is all axial electromagnetic force by step (A3), according to " axial gas power-corner " relation curve and
" electric current-axial electromagnetic force " relation curve determines " corner-electric current " relation curve；
Wherein, electromagnetism air gap σ0Value are as follows: σ0∈ [0.05mm, 0.1mm].
Step (B) detects corner value a (t) and determines the current value of exciting part according to " corner-electric current " relation curve, right
Axial electromagnetic force is adjusted；
Step (C) detects current exhaust pressure P (t), and by itself and goal pressure P0Compare, according to comparison result to electromagnetism
Air gap σ0Carry out assignment again；
If P (t) ∈ δ, σ0=σ0-σ1；
IfAnd P (t) ﹥ P0, then σ0=σ0-σ1；
IfAnd P (t) ﹤ P0, then σ0=σ0+σ1；
Wherein, it is vented the value range of precision interval δ are as follows: δ is pressure at expulsion precision interval, δ ∈ [P0- 10%P0, P0+
10%P0], wherein σ1Value is constant, σ1∈[0.01σ0, 0.2 σ0]。
Step (D) is according to electromagnetism air gap σ0, " corner-electric current " relation curve is redefined, in conjunction with current movable orbiting scroll corner
Value α (t) determines the current value of exciting part, axial electromagnetic force is adjusted；
Repeat the above steps (C)-(D), until electromagnetism air gap is σ under conditions of meeting P (t) ∈ δ0Obtain minimum value；
It is specific:
When scroll machine is as compressor application, during executing above-mentioned steps, if P (t) starts to reduce after reaching peak value,
Then σ0=σ0+σ1；σ at this time0Get minimum value；
When scroll machine as expanding machine in application, execute above-mentioned steps during, if P (t) starts to increase after reaching valley,
Then σ0=σ0-σ1, σ at this time0Get minimum value.
In addition, in step (D), if after optimal time is more than predetermined amount of time, pressure at expulsion P (t) row of not falling within always
In atmospheric pressure precision interval, then control unit provides warning message to general control system.
According to Figure 16, after judging that scroll machine enters steady operational status, and after optimizing, by Timer Controlling into
Enter to be spaced optimizing state.
It can be seen from the above, the main optimization of this optimization method runs thinking are as follows:
If i) gas pressure reaches goal pressure, gradually reduce electromagnetism air gap, until gas pressure starts to reduce, in reality
During applying, when gas pressure starts to reduce, then electromagnetism air gap is preferably recalled into 1-2 gear, until pressure at expulsion is restored
To target design value.
Ii) if Gas Gap Pressure does not reach goal pressure, gradually increase electromagnetism air gap, until pressure reaches target value.
In addition, it should be noted that:
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art are not departing from the principle of the present invention and objective
In the case where can make changes, modifications, alterations, and variations to the above described embodiments within the scope of the invention, it is all according to this hair
Bright technical spirit any simple modification, equivalent change and modification to the above embodiments, still fall within the technology of the present invention
In the range of scheme.
Claims (10)
1. a kind of electromagnetic mechanism of scroll machine, which is characterized in that including control unit, control execution unit and detection part；Its
In:
Detection part, including pressure detecting part and roll angle inspection part, the pressure detecting part are set to the exhaust ports of scroll machine,
For detecting the exhaust pressure value of scroll machine exhaust outlet, the roll angle inspection part is set at the drive shaft of scroll machine, for examining
Survey the corner information of movable orbiting scroll (1)；
Execution unit is controlled, including the first magnetic circuit iron core (31) being fixed on movable orbiting scroll (1) and is fixed on fixed scroll (2)
Second magnetic circuit iron core (32), is fixed with multiple first iron core suction foots (311) on the first magnetic circuit iron core (31), and described second
Multiple second iron core suction foots (321) are fixed on magnetic circuit iron core (32)；The first iron core suction foot (311) and the second iron core
Suction foot (321) quantity is identical, and the two position is corresponding up and down；Multiple excitations are additionally provided on the second magnetic circuit iron core (32)
Component (322), each exciting part (322) are spaced apart with each second iron core suction foot (321)；
The control unit is connect with the detection part and exciting part (322) respectively, and control unit is according to detection part
Testing result adjusts accordingly the electric current in exciting part (322), so that the first iron core suction foot (311) and the
The axial gas power in axial electromagnetic force and scroll machine between two iron core suction foots (321) is cancelled out each other.
2. a kind of electromagnetic mechanism of scroll machine according to claim 1, which is characterized in that the first iron core suction foot
(311) bottom surface and the top surface of the second iron core suction foot (321) are plane, and the bottom faces of the first iron core suction foot (311)
The long-pending topside area less than the second iron core suction foot (321), when the first magnetic circuit iron core (31) follows movable orbiting scroll (1) to rotate, the
In the range of the bottom surface of one iron core suction foot (311) is fallen in always right above the second iron core suction foot (321).
3. a kind of electromagnetic mechanism of scroll machine according to claim 2, which is characterized in that exciting part (322) packet
Include magnet exciting coil；
Alternatively, the exciting part (322) includes permanent magnet and magnet exciting coil.
4. a kind of electromagnetic mechanism of scroll machine according to claim 3, which is characterized in that the first iron core suction foot
(311) and the second iron core suction foot (321) is column structure.
5. a kind of electromagnetic mechanism of scroll machine according to claim 3 or 4, which is characterized in that the first magnetic circuit iron core
(31) and the second magnetic circuit iron core (32) is ring-type.
6. a kind of electromagnetic mechanism of scroll machine according to claim 3, which is characterized in that the first magnetic circuit iron core (31)
For ring-type；The second magnetic circuit iron core (32) includes magnetic circuit iron core middle part and magnetic circuit core ends, wherein the second magnetic circuit iron
Fixed with fixed scroll (2) in the middle part of the magnetic circuit iron core of core (32), end extend out to fixed scroll (2) outside, and the exciting part (322) sets
It is placed on the end of the second magnetic circuit iron core (32).
7. a kind of electromagnetic mechanism of scroll machine according to claim 3, which is characterized in that the first iron core suction foot (311)
It is embedded in the side wall of movable orbiting scroll (1), and the lower end surface of the lower end surface of the first iron core suction foot (311) and movable orbiting scroll (1) side wall
It is flush；The second magnetic circuit iron core (32) is set to the lower section of the first iron core suction foot (311), and the second iron core suction
Foot (321) is set to the underface of the first iron core suction foot (311).
8. a kind of electromagnetic mechanism of scroll machine according to claim 1, which is characterized in that the pressure detecting part includes setting
It is placed in the pressure sensor of scroll machine exhaust outlet, the roll angle inspection part includes the corner being set at movable orbiting scroll (1) drive shaft
Sensor, the pressure sensor and the rotary angle transmitter are connect with control unit.
9. a kind of electromagnetic mechanism of scroll machine according to claim 1, which is characterized in that the control unit includes control
Device and control circuit, the controller by the control circuit respectively with the pressure detecting part, roll angle inspection part and excitation
Component connection.
10. a kind of scroll machine, which is characterized in that including movable orbiting scroll, fixed scroll and electricity as claimed in any one of claims 1-9 wherein
Magnetic mechanism, the scroll machine offset the axis between movable orbiting scroll and fixed scroll by the axial electromagnetic force that the electromagnetic mechanism generates
To gas force.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110925197A (en) * | 2019-12-06 | 2020-03-27 | 浙江科技学院 | Scroll machine, axial back pressure dynamic control method thereof and storage medium |
| CN113153747A (en) * | 2021-05-26 | 2021-07-23 | 浙江科技学院 | Axial force tracking method and system for scroll machine |
| CN113606134A (en) * | 2021-06-11 | 2021-11-05 | 浙江科技学院 | Optimization control method for electromagnetic axial dynamic sealing of scroll machine |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001336486A (en) * | 2000-05-29 | 2001-12-07 | Matsushita Electric Works Ltd | Scroll fluid machine |
| JP2002330579A (en) * | 2001-04-27 | 2002-11-15 | Matsushita Electric Works Ltd | Revolving actuator |
| JP2011169284A (en) * | 2010-02-19 | 2011-09-01 | Mitsubishi Heavy Ind Ltd | Scroll type compressor |
| JP2012013029A (en) * | 2010-07-02 | 2012-01-19 | Panasonic Corp | Compressor |
| CN103256080A (en) * | 2013-05-02 | 2013-08-21 | 北京化工大学 | Electromagnetic controller with sealing function |
| KR20140021343A (en) * | 2012-08-10 | 2014-02-20 | 한라비스테온공조 주식회사 | Inverter cover of motor driven compressor |
| KR20140121961A (en) * | 2013-04-08 | 2014-10-17 | 학교법인 두원학원 | Electric scroll compressor |
| CN104405615A (en) * | 2014-10-16 | 2015-03-11 | 中国科学院上海技术物理研究所 | Overall scaling method for developing opposed movable coil type linear compressors |
| CN106438354A (en) * | 2016-09-27 | 2017-02-22 | 沈阳工业大学 | Magnetic levitation drive oilless scroll compressor |
| CN207485669U (en) * | 2017-10-13 | 2018-06-12 | 南昌大学 | A kind of scroll expander |
| CN208010404U (en) * | 2018-01-12 | 2018-10-26 | 至玥腾风科技投资集团有限公司 | A kind of tesla's turbine |
| CN208123064U (en) * | 2018-03-22 | 2018-11-20 | 宁波汇峰聚威科技股份有限公司 | A kind of variable-flow screw compressor |
| CN208396936U (en) * | 2018-02-08 | 2019-01-18 | 湖南理工学院 | A kind of air conditioning for automobiles is double to drive screw compressor |
-
2019
- 2019-05-30 CN CN201910464820.9A patent/CN110107503B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001336486A (en) * | 2000-05-29 | 2001-12-07 | Matsushita Electric Works Ltd | Scroll fluid machine |
| JP2002330579A (en) * | 2001-04-27 | 2002-11-15 | Matsushita Electric Works Ltd | Revolving actuator |
| JP2011169284A (en) * | 2010-02-19 | 2011-09-01 | Mitsubishi Heavy Ind Ltd | Scroll type compressor |
| JP2012013029A (en) * | 2010-07-02 | 2012-01-19 | Panasonic Corp | Compressor |
| KR20140021343A (en) * | 2012-08-10 | 2014-02-20 | 한라비스테온공조 주식회사 | Inverter cover of motor driven compressor |
| KR20140121961A (en) * | 2013-04-08 | 2014-10-17 | 학교법인 두원학원 | Electric scroll compressor |
| CN103256080A (en) * | 2013-05-02 | 2013-08-21 | 北京化工大学 | Electromagnetic controller with sealing function |
| CN104405615A (en) * | 2014-10-16 | 2015-03-11 | 中国科学院上海技术物理研究所 | Overall scaling method for developing opposed movable coil type linear compressors |
| CN106438354A (en) * | 2016-09-27 | 2017-02-22 | 沈阳工业大学 | Magnetic levitation drive oilless scroll compressor |
| CN207485669U (en) * | 2017-10-13 | 2018-06-12 | 南昌大学 | A kind of scroll expander |
| CN208010404U (en) * | 2018-01-12 | 2018-10-26 | 至玥腾风科技投资集团有限公司 | A kind of tesla's turbine |
| CN208396936U (en) * | 2018-02-08 | 2019-01-18 | 湖南理工学院 | A kind of air conditioning for automobiles is double to drive screw compressor |
| CN208123064U (en) * | 2018-03-22 | 2018-11-20 | 宁波汇峰聚威科技股份有限公司 | A kind of variable-flow screw compressor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110925197A (en) * | 2019-12-06 | 2020-03-27 | 浙江科技学院 | Scroll machine, axial back pressure dynamic control method thereof and storage medium |
| CN110925197B (en) * | 2019-12-06 | 2021-05-25 | 浙江科技学院 | Scroll machine, axial back pressure dynamic control method thereof and storage medium |
| CN113153747A (en) * | 2021-05-26 | 2021-07-23 | 浙江科技学院 | Axial force tracking method and system for scroll machine |
| CN113153747B (en) * | 2021-05-26 | 2022-07-01 | 浙江科技学院 | Axial force tracking method and system for scroll machine |
| CN113606134A (en) * | 2021-06-11 | 2021-11-05 | 浙江科技学院 | Optimization control method for electromagnetic axial dynamic sealing of scroll machine |
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