CN107620705A - Screw compressor and air-conditioning system - Google Patents
Screw compressor and air-conditioning system Download PDFInfo
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- CN107620705A CN107620705A CN201710788797.XA CN201710788797A CN107620705A CN 107620705 A CN107620705 A CN 107620705A CN 201710788797 A CN201710788797 A CN 201710788797A CN 107620705 A CN107620705 A CN 107620705A
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- increasing enthalpy
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- screw compressor
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Abstract
The invention provides a kind of screw compressor and air-conditioning system.Screw compressor includes：Shell, enclose and set to form installation cavity；Compression mechanism, including fixed scroll and orbiter, fixed scroll are intermeshed to form compression chamber with orbiter, and mounting hole is provided with fixed scroll, and the bottom of mounting hole is provided with the increasing enthalpy mouth of connection mounting hole and compression chamber；Increasing enthalpy non-return component, including check-valves, flexible member and increasing enthalpy passage, increasing enthalpy passage is connected with mounting hole, check-valves is arranged in mounting hole, flexible member is supported between check-valves and the bottom of mounting hole, check-valves is moved back and forth in mounting hole so that increasing enthalpy passage to be opened or closed, and at least side is provided with buffer structure to prevent check-valves from impacting increasing enthalpy passage and fixed scroll during moving back and forth in the opposite sides of check-valves.The present invention can avoid causing it to hit the phenomenon of sunken end face or check-valves cut-off adverse current seal face fracture because of check-valves repeatedly reciprocating impact.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to a kind of screw compressor and air-conditioning system.
Background technology
As heat pump air conditioner is constantly opened up with use range of the heat pump water heater system in low temperature or ultralow temperature field in recent years
It is wide.Heat pump generally requires to run under 0 DEG C even less than -15 DEG C of low ambient temperature, because suction and discharge pressure ratio increases, row
Temperature degree rises, and causes heating capacity deficiency and the problems such as overheat of compressor.In recent years, quasi- two level screw compressor increasing enthalpy system tool
Standby effect lifting system improves the advantages such as compressor reliability in low temperature or the heating capacity and efficiency of ultralow-temperature operation conditions, gradually into
For the important developing direction of heat pump.
Systematic economy device is in centre by quasi- two level screw compressor increasing enthalpy system using injection increasing enthalpy scroll compressor
The refrigerant of pressure by increasing enthalpy passage directly injection covers in vortex pump housing compression chamber, and with the high temperature refrigerant in compression chamber
Mixing compression is carried out, exhaust specific enthalpy is reduced, so as to reduce the delivery temperature of compressor, improves its reliability.Meanwhile the system is steamed
Sending out the specific enthalpy of device import reduces, and increases compressor air-discharging amount, so as to improve system heating capacity and efficiency.But heat pump only exists
Under low temperature or ultra-low temperature surroundings, system just needs to open Gas-supplying enthalpy-increasing lifting heating capacity, and under annual most of operating mode
Gas-supplying enthalpy-increasing need not be carried out.In the case where system closes Gas-supplying enthalpy-increasing, because the refrigerant in compression chamber can adverse current entrance
Thermal expansion is carried out in increasing enthalpy path cavity volume, causes to increase extra compression power consumption, the problem of causing efficiency to decline.Therefore, it is necessary to
The check-valves of counterflow-preventing is set in its increasing enthalpy passage；When system closes Gas-supplying enthalpy-increasing, compression chamber and increasing enthalpy can be cut off in time
Passage, and check-valves set location should close proximity to compression chamber, with reduce refrigerant in the cavity volume outside compression chamber it is repeatedly swollen
Swollen and compression.Further, guard system is not turned on and off Gas-supplying enthalpy-increasing operation, because compression cavity pressure is with crank rotation
Periodically fluctuated above and below second vapor injection pressure so that check-valves opens and closes repeatedly.The check valve body is periodically past
Multiple operation, comes the end face that repercussion plays position-limiting action to it, spacing end deformed depression or valve body fracture, modeling easily occurs
Property deformation can cause increasing enthalpy tonifying Qi open area reduce even occlusion；Positive stop end face is plastically deformed and impact adhesion or valve body fracture meeting
Fine impurities are produced, the vortex pump housing is entered by increasing enthalpy gas supplementing opening, directly contributes compressor abnormal damage.In addition, one-way valve
Body oscillation cycle impacts, and can increase the noise and vibration of compressor.Therefore, buffer structure need to be increased on check valve, with
Solve the above problems.
Patent document CN204783642U discloses a kind of screw compressor injection check valve structure, increases although can solve to close
Refrigerant reflux problem during enthalpy.But guard system is not turned on and off Gas-supplying enthalpy-increasing operation, due to the jet connected with compression chamber
Fluctuated above and below second vapor injection pressure to place's pressure cycle, cause check-valves that periodic reverse is impacted into fixed scroll and the back of the body
Plate.This can make compressor the above-mentioned compressor reliability caused by check-valves reciprocating impact and noise aspect problem occur.
The content of the invention
It is a primary object of the present invention to provide a kind of screw compressor and air-conditioning system, to solve whirlpool of the prior art
The check-valves of compressor is revolved because opening and closing easily the problem of face deformation or valve body fracture occur repeatedly.
To achieve these goals, according to an aspect of the invention, there is provided a kind of screw compressor, including：Shell,
Shell, which encloses, to be set to form installation cavity；Compression mechanism, compression mechanism include fixed scroll and orbiter, fixed scroll and orbiter
Intermeshing forms compression chamber, and mounting hole is provided with fixed scroll, and the bottom of mounting hole is provided with connection mounting hole and compression
The increasing enthalpy mouth of chamber；Increasing enthalpy non-return component, increasing enthalpy non-return component include check-valves, flexible member and increasing enthalpy passage, increasing enthalpy passage
It is connected with mounting hole, check-valves is arranged in mounting hole, and flexible member is supported between check-valves and the bottom of mounting hole, non-return
Valve is moved back and forth in mounting hole so that increasing enthalpy passage to be opened or closed；At least side is provided with the relative both sides of check-valves
Buffer structure is to prevent check-valves from impacting increasing enthalpy passage and fixed scroll during moving back and forth.
Further, check-valves includes：Check-valves ends adverse current seal face；Flow-guiding channel, flow-guiding channel run through non-return
Valve；Flange, flange, which encloses, is located at check-valves cut-off adverse current seal face neighboring, and the periphery of increasing enthalpy passage sets the first buffering to hold
Chamber, the first buffer volume enclose to set to form the groove being adapted with flange with the inwall of mounting hole.
Further, flange is annular flange, and the first buffer volume is loop buffer cavity volume.
Further, buffer structure includes first segment discharge orifice, and first segment discharge orifice is arranged in the side wall of increasing enthalpy passage and will
First buffer volume connects with the pore of increasing enthalpy passage.
Further, the bottom of mounting hole is provided with the second buffer volume, and check-valves also includes boss, and boss is arranged on only
The side of the remote flange of valve cut-off adverse current seal face is gone back to, boss is adapted with the second buffer volume.
Further, buffer structure also includes the second throttle orifice, and the second throttle orifice connects the second buffer volume and compression chamber
It is logical.
Further, flexible member is spring.
Further, sealed between increasing enthalpy passage and mounting hole by sealing ring.
Further, shell includes housing and lid is located at the end cap of shell end, and end cap is located at the side of fixed scroll, increases
Enthalpy passage is integrally formed setting with end cap.
Further, mounting hole has increasing enthalpy passage, the footpath of end cap along the axially extending of fixed scroll, the axially arranged of end cap
To the increasing enthalpy tube connection ports that are connected with increasing enthalpy passage are provided with, increasing enthalpy passage is connected with mounting hole.
Further, increasing enthalpy non-return component be one, two or more, one, two or more increasing
Enthalpy non-return component along fixed scroll circumferentially.
According to another aspect of the present invention, there is provided a kind of air-conditioning system, including screw compressor, screw compressor are upper
The screw compressor stated.
Apply the technical scheme of the present invention, it is slow by this because the screw compressor in the present invention is provided with buffer structure
The effect of structure is rushed, during check-valves moves back and forth in mounting hole, can effectively prevent check-valves and increasing enthalpy passage
Impacted between the fixed scroll of whirlpool, and then check-valves is protected, prevent check-valves because repeatedly opening increasing enthalpy passage
Or close and the phenomenon of sunken end face or check-valves cut-off adverse current seal face fracture occur.At the same time, additionally it is possible to reduce
Noise during screw compressor use, improve the reliability of screw compressor.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing a further understanding of the present invention, and of the invention shows
Meaning property embodiment and its illustrate be used for explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 diagrammatically illustrates the sectional view of the screw compressor of the present invention；
Fig. 2 diagrammatically illustrates the fixed scroll of screw compressor and the exploded view of increasing enthalpy non-return component of the present invention；
Fig. 3 diagrammatically illustrates the first stereogram of the check-valves of the present invention；
Fig. 4 diagrammatically illustrates the second stereogram of the check-valves of the present invention；
Fig. 5 diagrammatically illustrates the stereogram of the end cap of the present invention；
Fig. 6 schematically shows the enlarged drawing in the M regions in Fig. 5；
Enlarged drawing when the increasing enthalpy non-return component that Fig. 7 diagrammatically illustrates in the present invention is closed；
Fig. 8 diagrammatically illustrates the increasing enthalpy non-return component closing process cushioning effect enlarged drawing in the present invention；
Enlarged drawing when the increasing enthalpy non-return component that Fig. 9 diagrammatically illustrates in the present invention is in opening；And
Figure 10 diagrammatically illustrates the big figure of increasing enthalpy non-return component closing process cushioning effect hair in the present invention.
Wherein, above-mentioned accompanying drawing marks including the following drawings：
2nd, compression mechanism；3rd, electric machine assembly；4th, drive mechanism；5th, shell；6th, increasing enthalpy non-return component；10th, air-breathing side region；
11st, compression chamber；12nd, it is vented side region；13rd, middle pressure back pressure cavity；201st, fixed scroll；201a, fixed scroll exhaust outlet；201b、
Increasing enthalpy mouth；201c, the second buffer volume；201d, the second throttle orifice；201e, mounting hole；202nd, orbiter；202a, back pressure chamber
Draw middle pressure passageway；203rd, driving bearing；204th, the wear-resisting steel loop of anti-rotation；205th, middle pressure chamber sealing ring；206th, high-low pressure separates close
Seal；301st, motor stator；302nd, rotor；303rd, main balance weight；304th, secondary balance weight；305th, the first rotor cover plate；
306th, the second rotor cover plate；401st, mounting bracket；402nd, bent axle；403rd, crank-pin；404th, eccentric bushing；405th, base bearing；406、
Anti- rotation alignment pin；407th, alignment pin；501st, housing；501a, air entry；502nd, end cap；502a, exhaust outlet of compressor；502b、
Increasing enthalpy tube connection ports；502c, increasing enthalpy passage 502c；502d, the first buffer volume；502e, first segment discharge orifice；502f, increasing enthalpy are close
Seal groove；502g, non-return seal face；503rd, supplementary bearing；504th, fastening bolt；601st, check-valves；601a, flow-guiding channel；
601b, flange；601c, boss；601d, check-valves cut-off adverse current seal face；602nd, flexible member；603rd, sealing ring；701、
Jump ring；702nd, axle envelope.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
It should be noted that term used herein above is merely to describe 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 singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
It should be noted that term " first " in the description and claims of this application and above-mentioned accompanying drawing, "
Two " etc. be for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so use
Data can exchange in the appropriate case, so that presently filed embodiment described herein for example can be with except herein
Order beyond those of diagram or description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that
Be to cover it is non-exclusive include, for example, containing the process of series of steps or unit, method, system, product or equipment not
Be necessarily limited to those steps or the unit clearly listed, but may include not list clearly or for these processes, side
The intrinsic other steps of method, product or equipment or unit.
For the ease of description, space relative terms can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be appreciated that space relative terms are intended to comprising the orientation except device described in figure
Outside different azimuth in use or operation.For example, if the device in accompanying drawing is squeezed, it is described as " in other devices
It will be positioned as " under other devices or construction after the device of part or construction top " or " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (being rotated by 90 ° or in other orientation), and
And respective explanations are made to the relative description in space used herein above.
As shown in figure 1, according to an embodiment of the invention, there is provided a kind of screw compressor, the scroll compression in the present embodiment
Contracting owner will include compression mechanism 2, electric machine assembly 3, transmission drive mechanism 4, shell 5 and increasing enthalpy non-return component 6.
Wherein, shell 5, which encloses, sets to form installation cavity, and motor stator 301, the interference of supplementary bearing 503 are fixedly installed in housing 501
In installation cavity.Rotor 302 and main balance weight 303, secondary balance weight 304 and the first rotor cover plate 305, the second rotor cover plate
306 by rivet interlacement together；Crank-pin 403 and the elastic conjunction of bent axle 402, and crank-pin 403 passes through electricity with bent axle 402
Machine rotor 302 connects as one with the interference of bent axle 402.The inside and outside circle of base bearing 405 respectively with bent axle 402, the interference of support 401
Connection, support 401, which is fixed on shell 5 and enclosed, to be set in the installation cavity to be formed；Bent axle 402 connects with the inner ring of supplementary bearing 503 interference fit,
Therefore bent axle 402 can not move axially, and be only capable of rotating.Housing 501 is fixedly connected with end cap 502 by fastening bolt 504, and is led to
Cross end cap 502 fixed scroll 201 and support 401 are compressed and be fixed in installation cavity, and end cap 502 and fixed scroll 201 it
Between sealed by high-low pressure parting seal circle 206.
Compression mechanism 2 in the present embodiment includes fixed scroll 201 and orbiter 202, and orbiter 202 is arranged at quiet
Between scroll plate 201 and support 401, eccentric bushing 404 is connected to by driving bearing 203 and crank-pin 403 inserts eccentric bushing
In 404 eccentric orfices, so as to drive orbiter 202.On the other hand, it is provided with orbiter 202 by 6 groups of anti-rotation abrasion-resistant stees
The anti-rotation mechanism of ring 204 and anti-rotation alignment pin 406 composition, wherein, the anti-wear-resisting steel loop 204 of rotation is installed on orbiter
In hole position on 202, the anti-force fit of rotation alignment pin 406 is rigidly attached on support 401；And the anti-wear-resisting steel loop of rotation
204 internal diameters are worse than 2 times of radius of gyration R with the anti-diameter of rotation alignment pin 407.Anti- autobiography mechanism is equivalent to parallel―ordinal shift machine
Structure, wherein orbiter 202 are equivalent to connecting rod, therefore orbiter 202 makees the revolution translation of no rotation.
Under the constraint of anti-autobiography mechanism, orbiter 202 is made without certainly around the center of fixed scroll 201 by R of the radius of gyration
The revolution translation turned.Fixed scroll 201 is respectively provided with scrollwork tooth with orbiter 202, and two scrollwork teeth are made up of conjugation molded line, can phase
Mutually engagement forms crescent moon into compression chamber 11, is driven drive mechanism 4 and in the presence of anti-rotation mechanism, compression chamber 11 is constantly to center
Passage, volume are constantly reduced, and pressure is constantly compressed in compression chamber 11, and the vortex pump housing is carried out continuously air-breathing, compression and row
Gas.
Under the swabbing action of compression mechanism 2, refrigerant is from the air entry 501a being connected with air-conditioning system evaporator outlet
Into screw compressor air-breathing side region 10, process simultaneously cools down electric machine assembly 3, is then drawn into orbiter 202 and quiet vortex
The scrollwork tooth of disk 201 engages formed suction muffler, while suction side has partial freeze oil and is also sucked into compression chamber, and lubricate,
Sealing and cooling compression mechanism 2.As bent axle 402 rotates, suction muffler is closed and starts to be collapsed into compression chamber 11, compression chamber
11 gases continue to reach certain pressure by compression, are discharged through the central exhaust port 201a of fixed scroll 201, into exhaust side region
12, compressor is discharged from exhaust outlet 502a, subsequently into system condenser.On the other hand, it is in intermediate pressure in compression chamber 11
Refrigerant with freezing oil mixture, draw middle pressure passageway 202a by back pressure chamber, into by support 401, axle envelope 702, dynamic vortex
Disk 202 and middle pressure chamber sealing ring 205 closed area formed thereby, i.e., in pressure back pressure cavity 13.Centre in middle pressure back pressure cavity 13
The refrigerant of pressure and freezing oil mixture, on the one hand, back pressure is produced to orbiter 202 and pushes it against and is close to quiet whirlpool
Capstan 201, to realize vortex pump housing axial seal；On the other hand, each friction pair enters in refrigeration oil centering pressure back pressure cavity therein
Row lubrication and cooling.
With reference to shown in Fig. 1 to Figure 10, mounting hole 201e, mounting hole are provided with the fixed scroll 201 in the present embodiment
201e bottom is provided with the increasing enthalpy mouth 201b of connection mounting hole 201e and compression chamber 11；Increasing enthalpy non-return component 6 includes check-valves
601st, flexible member 602 and increasing enthalpy passage 502c, during installation, increasing enthalpy passage 502c is connected with mounting hole 201e, check-valves 601
In mounting hole 201e, flexible member 602 is supported between check-valves 601 and mounting hole 201e bottom, check-valves
601 move back and forth so that increasing enthalpy passage 502c to be opened or closed in mounting hole 201e.
Preferably, the present embodiment mesoscale eddies compressor also includes buffer structure, and the buffer structure is arranged on the phase of check-valves 601
To at least side in both sides to prevent check-valves 601 from impacting increasing enthalpy passage 502c and fixed scroll during moving back and forth
201。
Because the screw compressor in the present embodiment is provided with buffer structure, by the effect of the buffer structure, work as non-return
During valve 601 moves back and forth in mounting hole 201e, check-valves 601 and increasing enthalpy passage 502c and whirlpool can be effectively prevented
Impacted between fixed scroll 201, and then check-valves 601 is protected, prevent check-valves 601 because repeatedly leading to increasing enthalpy
Road 502c is opened or closed and the phenomenon of sunken end face or check-valves cut-off adverse current seal face fracture is occurred.At the same time,
The noise during screw compressor use can also be reduced, improves the reliability of screw compressor.
Check-valves 601 in the present embodiment includes check-valves cut-off adverse current seal face 601d, flow-guiding channel 601a and convex
Edge 601b, flow-guiding channel 601a run through check-valves 601；Flange 601b, which encloses, is located at check-valves cut-off adverse current seal face 601d peripheries
Side, increasing enthalpy passage 502c periphery set the first buffer volume 502d, and the first buffer volume 502d and mounting hole 201e's is interior
Wall, which encloses, sets the groove to be formed and be adapted with flange 601b.
When the check-valves 601 in the present embodiment closes increasing enthalpy passage 502c, check-valves cut-off adverse current seal face
601d central part just blocks increasing enthalpy passage 502c outlet, and then increasing enthalpy passage 502c is closed, and works as check-valves
601 when increasing enthalpy passage 502c is opened, and check-valves ends adverse current seal face 601d and transported to the direction away from increasing enthalpy passage 502c
It is dynamic, and then increasing enthalpy passage 502c is opened, now, it can pass through and lead into mounting hole 201e refrigerant from increasing enthalpy passage 502c
Circulation road 601a, then enter from increasing enthalpy mouth 201b in compression chamber 11, realize that Gas-supplying enthalpy-increasing operates.
Preferably, the flange 601b in the present embodiment is annular flange, accordingly, the first buffering of increasing enthalpy blowdown pipe periphery
Cavity volume is loop buffer cavity volume.
Buffer structure includes first segment discharge orifice 502e, and first segment discharge orifice 502e is arranged in increasing enthalpy passage 502c side wall
And the first buffer volume is connected with increasing enthalpy passage 502c pore.As increasing enthalpy superfeed pressure Pm≤11 pressure Pi of compression chamber,
In the presence of flexible member 602, check-valves 601 moves to close to the direction of increasing enthalpy blowdown pipe, makes check-valves cut-off adverse current close
End-blocking face 601d is bonded with increasing enthalpy passage 502c seal face 502g, and check-valves 601 closes increasing enthalpy blowdown pipe, close to realize
Envelope reaches the purpose that non-return prevents adverse current.Therefore, tonifying Qi compression chamber clearance volume can be reduced and prevent the refrigeration in compression chamber 11
The problems such as agent meeting adverse current, which enters, carries out thermal expansion in increasing enthalpy path cavity volume, avoiding screw compressor power consumption increases, and efficiency declines.
During being moved in the direction of from check-valves 601 to increasing enthalpy passage 502c, because first segment discharge orifice 502e is arranged on
Connected in increasing enthalpy passage 502c side wall and by the first buffer volume with increasing enthalpy passage 502c pore, the first buffer volume is with stopping
Compression square-cavity can be formed by returning flange 601b set on valve 601, and first segment discharge orifice 502e by buffer volume 502d with
Increasing enthalpy passage 502c pore connection, buffering can be played during check-valves 601 moves to increasing enthalpy passage 502c and is made
With it is impact increasing enthalpy passage 502c to prevent that check-valves 601 from moving quickly toward increasing enthalpy passage 502c, improves making for check-valves 601
With the life-span, the noise of screw compressor is reduced.
Preferably, the bottom of the mounting hole 201e in the present embodiment is provided with the second buffer volume 201c, and check-valves 601 is also
Including boss 601c, boss 601c is arranged on check-valves cut-off adverse current seal face 601d remote flange 601b side, convex
Platform 601c extends to the second buffer volume 201c；Buffer structure also includes the second throttle orifice 201d, the second throttle orifice 201d by the
Two buffer volume 201c connect with compression chamber 11.As the pressure Pi in increasing enthalpy superfeed pressure Pm ﹥ compression chambers 11, check-valves 601
In the presence of pressure at both sides difference, overcome resistance (including produced by the active force of flexible member 602, the second buffer volume 201c effect
Power and frictional force), promote check-valves 601 to be run to the side of fixed scroll 201, increasing enthalpy passage 502c is opened, and refrigerant is through end
Lid increasing enthalpy passage 502c enters to be formed between mounting hole 201e, flow-guiding channel 601a, boss 601c and flexible member 602 and led to
Road, and be injected into by the increasing enthalpy mouth 201b on fixed scroll 201 in compression chamber 11, to complete to spray increasing enthalpy tonifying Qi.
During increasing enthalpy passage 502c is opened, pass through the second buffer volume 201c and the second structure hole 201d work
With, can check-valves 601 to orbiter 202 move during play cushioning effect, prevent check-valves 601 quickly toward
The bottom elliptical gear fixed scroll 201 of mounting hole 201, the service life of check-valves 601 is improved, reduces making an uproar for screw compressor
Sound.
Sealed between increasing enthalpy passage 502c and mounting hole 201e in the present embodiment by sealing ring 603, in actual installation
When, increasing enthalpy passage 502c periphery is provided with increasing enthalpy seal groove 502f, and during installation, sealing ring 603 is sealed installed in increasing enthalpy
In ring recess 502f, then increasing enthalpy passage 502c is arranged in mounting hole 201e again.
Preferably, the shell 5 in the present embodiment includes housing 501 and lid is located at the end cap 502 of the end of housing 501, end cap
502 are located at the side of fixed scroll 201, and increasing enthalpy passage 502c is integrally formed setting, compact-sized, stability with end cap 502
It is high.
Certainly, in other embodiments of the invention, increasing enthalpy passage 502c can also be separately provided as a pipeline or
Person is set together with fixed scroll 201, as long as other modes of texturing under the design of the present invention, the guarantor in the present invention
Within the scope of shield.
During specific design, mounting hole 201e in the present embodiment is along the axially extending of fixed scroll 201, the axle of end cap 502
To increasing enthalpy passage 502c is provided with, end cap 502 is radially arranged the increasing enthalpy tube connection ports 502b connected with increasing enthalpy passage 502c,
Increasing enthalpy passage 502c is connected with mounting hole 201e, simple in construction, is easy to assemble and is processed.
Preferably, increasing enthalpy non-return component 6 be one, two or more, said one, two or more
Increasing enthalpy non-return component 6 along fixed scroll 201 circumferentially.
Preferably, the flexible member 602 in the present embodiment is spring, certainly, can be with the other embodiment of invention
Flexible member 602 is arranged to the elastic constructions such as rubber blanket or rubber ring, as long as other changes under the design of the present invention
Shape mode, within protection scope of the present invention.
Further in conjunction with shown in Fig. 1 to Figure 10, the detailed process of present invention injection increasing enthalpy non-return counterflow-preventing is as follows：Increasing enthalpy non-return
Component 6 is arranged in the mounting hole 201e that fixed scroll 201 is opened up, and it includes check-valves 601, flexible member 602, increasing enthalpy and led to
Road 502c and sealing ring 603 etc..Increasing enthalpy passage 502c is wholely set with end cap 502, including increasing enthalpy tube connection ports 502b and increasing
Enthalpy passage 502c, increasing enthalpy tube connection ports 502b are connected by connecting tube and the outlet of air-conditioning system economizer or flash evaporation；Increasing enthalpy is led to
502c insertion fixed scrolls 201 in road open up mounting hole 201e, by sealing ring 603 by it with being vented the high pressure gas of side region 12
Body is isolated, to realize that increasing enthalpy passage seals.Check-valves 601 includes flow-guiding channel 601a, flange 601b, boss 601c and non-return
Valve cut-off adverse current seal face 601d.
As shown in figure 9, when increasing enthalpy superfeed pressure Pm ﹥ compress cavity pressure Pi, the effect of the pressure at both sides of check-valves 601 difference
Under, overcome resistance (including the active force of flexible member 602, the second buffer volume 201c active forces and frictional force), promote non-return
Valve 601 is run to the side of fixed scroll 201, and check-valves is opened, and refrigerant enters mounting hole 201e, water conservancy diversion through increasing enthalpy passage 502c
Passage is formed between passage 601a, boss 601c and flexible member 602, and compression chamber 11 is injected into by increasing enthalpy mouth 201b
It is interior, to complete to spray increasing enthalpy tonifying Qi.
As shown in Figure 10, as increasing enthalpy superfeed pressure Pm≤11 pressure Pi of compression chamber, in the presence of flexible member 602,
Check-valves 601 is promoted check-valves is ended adverse current seal face 601d with being opened on increasing enthalpy passage 502c to the lateral movement of end cap 501
If non-return seal face 502g fitting, increasing enthalpy passage 502c is in the completely closed state, is prevented with realizing that sealing reaches non-return
The purpose of adverse current.Therefore, tonifying Qi compression chamber clearance volume can be reduced and prevent the refrigerant in compression chamber 11 can countercurrently enter from increasing
The problems such as progress thermal expansion in enthalpy path cavity volume, avoiding compressor power consumption increases, and efficiency declines.
Further in conjunction with shown in Fig. 1 to Figure 10, the present invention sprays the realization of increasing enthalpy check-valves cushioning effect.Fixed scroll 201
Mounting hole 201e in the second buffer volume 201c and the second throttle orifice 201d.The second buffer volume 201c and check-valves 601
The boss 601c of upper setting can form compression square-cavity, and the second throttle orifice 201d is by the second buffer volume 201c and compression chamber
11 connections.Similarly, it is connected in end cap 502 with fixed scroll 201 at pipe port and opens the first buffer volume and first segment discharge orifice
502e.First buffer volume can form compression square-cavity, and first segment discharge orifice with the flange 601b opened up on check-valves 601
502e connects first buffer volume with increasing enthalpy passage 502c.
When system opens Gas-supplying enthalpy-increasing moment, (Pm ﹥ Pi), increasing enthalpy non-return in the presence of the pressure at both sides difference of check-valves 601
Component 6 enters opening procedure (such as Fig. 9) by completely closed state, then to fully open state (Fig. 7).Check-valves 601 is rapid
To the lateral movement of fixed scroll 201, while the first buffer volume volume increases rapidly, internal gas volumetric expansion and due to first segment
Flow 502e throttling pressure limitings to act on, gas, which fails to supplement in time, in increasing enthalpy passage 502c enters the first buffer volume, therefore, first
Gas pressure declines rapidly in buffer volume 502d.Because gas pressure declines rapidly in the first buffer volume, can make to act on
Check-valves 601 makes it make a concerted effort to reduce to the lateral movement of fixed scroll 201, so that the movement velocity of check-valves 601 slows down.
When check-valves 601, which moves to, closes the second buffer volume 201c, check-valves 601 continues quickly to fixed scroll
201 lateral movements, and boss 601c produces compression to the second buffer volume 201c, due to the second throttle orifice 201d effect,
Second buffer volume 201c gases fail to discharge in time, so the second buffer volume 201c gas pressure rapid increases.Similarly,
Due to gas pressure rapid increase in the second buffer volume 201c, can make to act on check-valves 601 makes it to the side of fixed scroll 201
Motion makes a concerted effort to reduce, so that the movement velocity of check-valves 601 slows down.Therefore, in the first buffer volume, the second buffer volume 201c
Or both acts on simultaneously under, because check-valves 601 is made to the first buffer volume, the second buffer volume 201c suction or compression
With making its flange 601b of check-valves 601 and zone gas pressure residing for boss 601c down or up, so as to check-valves 601
Produce cushioning effect；And the size of the cushioning effect is directly related with the movement velocity of check-valves 601, that is to say, that works as non-return
The elliptical gear speed of valve 601 is faster, and cushioning effect is more obvious；When the elliptical gear speed of check-valves 601 is smaller, cushioning effect also compared with
It is small.In this way, being that ensure that check-valves 601 reliably and have timely completed to be turned on and off acting by increasing enthalpy passage 502c, avoid again
Caused by check-valves 601 rapidly impact spacing face deformation depression or check-valves cut-off adverse current seal face fracture with
And its induced screw compressor reliability and noise the problems such as.
Similarly, as shown in Figure 10, when system closes Gas-supplying enthalpy-increasing, in the presence of the pressure at both sides difference of check-valves 601
(Pi ﹥ Pm), rapidly to the lateral movement of end cap 502, the second buffer volume 201c increases its gas pressure and declined check-valves 601, and first
Buffer volume is risen by its gas pressure is compressed, and makes zone gas pressure residing for its flange 601b of check-valves 601 and boss 601c
Rise or fall, so as to produce cushioning effect effect same as described above to check-valves 601.
On the other hand, no matter sky carry system be in be turned on and off Gas-supplying enthalpy-increasing, due in compression chamber 11 pressure Pi with
Bent axle 402 rotates can be in Pi_min~Pi_maxPressure limit cyclically-varying, and generally Pm is between Pi_minWith Pi_maxIt
Between.Therefore, the pressure at both sides difference direction of check-valves 601 and size cyclically-varying so that the periodic reverse of check-valves 601 impacts.
Now, in the presence of above-mentioned buffer structure, impact velocity between check-valves 601 and increasing enthalpy passage 502c can effectively be reduced very
To avoiding both from impacting completely, so as to avoid spacing face deformation depression or valve body fracture and its pressure induced
The problems such as contracting machine reliability and noise.
According to another aspect of the present invention, there is provided a kind of air-conditioning system, the air-conditioning system include screw compressor, are vortexed
Compressor is the screw compressor in above-described embodiment.
As can be seen from the above description, the above embodiments of the present invention realize following technique effect：
The screw compressor of the present invention sets the increasing enthalpy non-return component for possessing cushioning effect in increasing enthalpy passage, realizes that non-return is made
With, and avoid the problem of compressor reliability caused by check-valves reciprocating impact is with noise aspect.On the one hand, check-valves system
Cryogen circulation passage is separated to be located at its plane of structure centre position, and sets flange to avoid close to fixed scroll side and open fixed scroll increasing
Enthalpy blowdown pipe, connected so as to form passage with increasing enthalpy blowdown pipe, and realize that one-way non-return prevents adverse current.On the other hand, check-valves
On flange be used for and fixed scroll, the first buffer volume form compression square-cavity, and its corresponding second opened up throttle orifice
Play throttling pressure limiting and retardation balance pressure.Therefore, during check-valves faster reciprocal motion, when flange and fixed scroll or
First buffer volume, which forms closing, to produce suction or compression to internal gas, now limited because first segment discharge orifice throttles
The effect of pressure, the first buffer volume internal gas pressure is down or up, so as to produce cushioning effect to check-valves；And this is slow
Punching effect can adaptively change with check-valves impact velocity, and check-valves impact velocity is faster, and cushioning effect is also more obvious.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (12)
1. a kind of screw compressor, including：
Shell (5), the shell (5), which is enclosed, to be set to form installation cavity；
Compression mechanism (2), the compression mechanism (2) include fixed scroll (201) and orbiter (202), the fixed scroll
(201) compression chamber (11) is formed with the orbiter (202) intermeshing, installation is provided with the fixed scroll (201)
Hole (201e), the bottom of the mounting hole (201e) are provided with the increasing for connecting the mounting hole (201e) and the compression chamber (11)
Enthalpy mouth (201b)；
Increasing enthalpy non-return component (6), the increasing enthalpy non-return component (6) include check-valves (601), flexible member (602) and increasing enthalpy
Passage (502c), the increasing enthalpy passage (502c) are connected with the mounting hole (201e), and the check-valves (601) is arranged on described
In mounting hole (201e), the flexible member (602) support the bottom of the check-valves (601) and mounting hole (201e) it
Between, the check-valves (601) is moved back and forth so that the increasing enthalpy passage (502c) is beaten on or off in the mounting hole (201e)
Close；Characterized in that, the screw compressor also includes：
At least side is provided with buffer structure to prevent the check-valves (601) in the relative both sides of the check-valves (601)
The increasing enthalpy passage (502c) and the fixed scroll (201) are impacted during reciprocating motion.
2. screw compressor according to claim 1, it is characterised in that the check-valves (601) includes：
Check-valves cut-off adverse current seal face (601d)；
Flow-guiding channel (601a), the flow-guiding channel (601a) run through the check-valves (601)；
Flange (601b), the flange (601b), which is enclosed, is located at described check-valves cut-off adverse current seal face (601d) neighboring, institute
The periphery for stating increasing enthalpy passage (502c) sets the first buffer volume (502d), first buffer volume (502d) and the installation
The inwall in hole (201e), which encloses, sets the groove to be formed and be adapted with the flange (601b).
3. screw compressor according to claim 2, it is characterised in that the flange (601b) is annular flange
(601b), first buffer volume are loop buffer cavity volume.
4. screw compressor according to claim 2, it is characterised in that the buffer structure includes first segment discharge orifice
(502e), the first segment discharge orifice (502e) are arranged in the side wall of the increasing enthalpy passage (502c) and hold the described first buffering
Chamber connects with the pore of the increasing enthalpy passage (502c).
5. screw compressor according to claim 2, it is characterised in that the bottom of the mounting hole (201e) is provided with
Two buffer volumes (201c), the check-valves (601) also include boss (601c), and the boss (601c) is arranged on the non-return
The side of the remote flange (601b) of valve cut-off adverse current seal face (601d), the boss (601c) are slow with described second
Cavity volume (201c) is rushed to be adapted.
6. screw compressor according to claim 5, it is characterised in that the buffer structure also includes the second throttle orifice
(201d), second throttle orifice (201d) connect second buffer volume (201c) with the compression chamber (11).
7. screw compressor according to claim 1, it is characterised in that the flexible member (602) is spring.
8. screw compressor according to any one of claim 1 to 7, it is characterised in that the increasing enthalpy passage (502c)
Sealed between the mounting hole (201e) by sealing ring (603).
9. screw compressor according to any one of claim 1 to 7, it is characterised in that the shell (5) includes housing
(501) and lid is located at the end cap (502) of the housing (501) end, and the end cap (502) is located at the fixed scroll (201)
Side, the increasing enthalpy passage (502c) and the end cap (502) are integrally formed setting.
10. screw compressor according to claim 9, it is characterised in that the mounting hole (201e) is along the quiet vortex
Disk (201) it is axially extending, the axially arranged of the end cap (502) has the increasing enthalpy passage (502c), the end cap (502)
It is radially arranged the increasing enthalpy tube connection ports (502b) connected with the increasing enthalpy passage (502c), the increasing enthalpy passage (502c) and institute
State mounting hole (201e) connection.
11. according to any one of claim 1 to 6 described screw compressor, it is characterised in that the increasing enthalpy non-return component
(6) it is one, two or more, one, two or more described increasing enthalpy non-return components (6) are along the quiet whirlpool
The arranged for interval of capstan (201).
12. a kind of air-conditioning system, including screw compressor, it is characterised in that the screw compressor is in claim 1 to 11
Screw compressor described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710788797.XA CN107620705B (en) | 2017-09-04 | 2017-09-04 | Scroll compressor and air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710788797.XA CN107620705B (en) | 2017-09-04 | 2017-09-04 | Scroll compressor and air conditioning system |
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| Publication Number | Publication Date |
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| CN107620705A true CN107620705A (en) | 2018-01-23 |
| CN107620705B CN107620705B (en) | 2023-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710788797.XA Active CN107620705B (en) | 2017-09-04 | 2017-09-04 | Scroll compressor and air conditioning system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253088A (en) * | 2018-11-09 | 2019-01-22 | 珠海凌达压缩机有限公司 | A kind of air-supplying enthalpy-adding device and screw compressor |
| CN109372753A (en) * | 2018-12-10 | 2019-02-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Check valve assembly, compressor and air conditioner |
| CN110107502A (en) * | 2018-02-01 | 2019-08-09 | 博泽沃尔兹堡汽车零部件有限公司 | Electronic coolant compressor |
| CN110131171A (en) * | 2019-06-12 | 2019-08-16 | 安徽省锦瑞汽车部件有限公司 | Gas-supplying enthalpy-increasing component and new-energy automobile screw compressor |
| CN111852852A (en) * | 2019-04-26 | 2020-10-30 | 艾默生环境优化技术(苏州)有限公司 | Scroll compressor |
| CN111919028A (en) * | 2018-12-12 | 2020-11-10 | 安徽省大富智能空调技术有限公司 | Compressor and air conditioning system and automobile using same |
| CN112576501A (en) * | 2020-12-03 | 2021-03-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and air conditioner |
| CN114962260A (en) * | 2022-05-30 | 2022-08-30 | 珠海凌达压缩机有限公司 | Compressor and compressor air conditioning system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1779307A (en) * | 2004-11-18 | 2006-05-31 | 中国核动力研究设计院 | Full-flow buffer check valve |
| JP2009162123A (en) * | 2008-01-08 | 2009-07-23 | Panasonic Corp | Refrigerating cycle device and fluid machine used for the same |
| JP2010185350A (en) * | 2009-02-12 | 2010-08-26 | Mitsubishi Heavy Ind Ltd | Refrigeration system and scroll compressor |
| CN106704178A (en) * | 2015-08-18 | 2017-05-24 | 珠海格力节能环保制冷技术研究中心有限公司 | Scroll compressor and decompression drainage structure thereof |
| CN107061292A (en) * | 2017-06-16 | 2017-08-18 | 珠海格力电器股份有限公司 | A kind of check-valves and the screw compressor with the check-valves |
| CN207195177U (en) * | 2017-09-04 | 2018-04-06 | 珠海格力电器股份有限公司 | Screw compressor and air-conditioning system |
-
2017
- 2017-09-04 CN CN201710788797.XA patent/CN107620705B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1779307A (en) * | 2004-11-18 | 2006-05-31 | 中国核动力研究设计院 | Full-flow buffer check valve |
| JP2009162123A (en) * | 2008-01-08 | 2009-07-23 | Panasonic Corp | Refrigerating cycle device and fluid machine used for the same |
| JP2010185350A (en) * | 2009-02-12 | 2010-08-26 | Mitsubishi Heavy Ind Ltd | Refrigeration system and scroll compressor |
| CN106704178A (en) * | 2015-08-18 | 2017-05-24 | 珠海格力节能环保制冷技术研究中心有限公司 | Scroll compressor and decompression drainage structure thereof |
| CN107061292A (en) * | 2017-06-16 | 2017-08-18 | 珠海格力电器股份有限公司 | A kind of check-valves and the screw compressor with the check-valves |
| CN207195177U (en) * | 2017-09-04 | 2018-04-06 | 珠海格力电器股份有限公司 | Screw compressor and air-conditioning system |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107502A (en) * | 2018-02-01 | 2019-08-09 | 博泽沃尔兹堡汽车零部件有限公司 | Electronic coolant compressor |
| CN109253088A (en) * | 2018-11-09 | 2019-01-22 | 珠海凌达压缩机有限公司 | A kind of air-supplying enthalpy-adding device and screw compressor |
| CN109372753A (en) * | 2018-12-10 | 2019-02-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Check valve assembly, compressor and air conditioner |
| CN109372753B (en) * | 2018-12-10 | 2023-10-03 | 珠海格力节能环保制冷技术研究中心有限公司 | Check valve assembly, compressor and air conditioner |
| CN111919028A (en) * | 2018-12-12 | 2020-11-10 | 安徽省大富智能空调技术有限公司 | Compressor and air conditioning system and automobile using same |
| CN111919028B (en) * | 2018-12-12 | 2022-12-23 | 安徽省大富智能空调技术有限公司 | Compressor and air conditioning system and automobile using same |
| CN111852852A (en) * | 2019-04-26 | 2020-10-30 | 艾默生环境优化技术(苏州)有限公司 | Scroll compressor |
| CN110131171A (en) * | 2019-06-12 | 2019-08-16 | 安徽省锦瑞汽车部件有限公司 | Gas-supplying enthalpy-increasing component and new-energy automobile screw compressor |
| CN110131171B (en) * | 2019-06-12 | 2024-03-15 | 安徽省锦瑞汽车部件有限公司 | Air supplementing enthalpy increasing component and scroll compressor for new energy automobile |
| CN112576501A (en) * | 2020-12-03 | 2021-03-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and air conditioner |
| CN114962260A (en) * | 2022-05-30 | 2022-08-30 | 珠海凌达压缩机有限公司 | Compressor and compressor air conditioning system |
| CN114962260B (en) * | 2022-05-30 | 2024-04-09 | 珠海凌达压缩机有限公司 | Compressor and compressor air conditioning system |
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