CN1831338A

CN1831338A - Dual horizontal scroll machine

Info

Publication number: CN1831338A
Application number: CNA2005100981253A
Authority: CN
Inventors: G·J·安德森
Original assignee: Copeland Corp LLC
Current assignee: Copeland Corp LLC
Priority date: 2005-03-08
Filing date: 2005-09-07
Publication date: 2006-09-13
Also published as: AU2005203754A1; BRPI0503794A; EP1701040A2; KR20060099379A; TW200632216A; EP1701040A3; US20060204378A1

Abstract

A compressor system includes a pair of compressors located in a common shell. A common drive shaft drives both compressors and the drive shaft is powered by a single motor. One or both of the compressors can be equipped with a pulse width modulated capacity control system and a vapor injection system. When one compressor is equipped with these systems, the capacity can be varied between 50% and 110%. When both compressors are equipped with these systems, the capacity can be varied between 0% and 120%. When operating in the reduced capacity mode, a biasing member positions the non-orbiting scroll and an anti-thrust ring positions the orbiting scroll to reduce noise created during the operation of the compressor.

Description

The scroll machine of two levels

Invention field

The present invention relates to be positioned at the multiple compressors of single housing, wherein in described housing, two compressors that are positioned at place, motor opposite end are all by this motor driven.More specifically, the present invention relates to a kind of system that is contained in two compressors, this system reduces the noise of disturbing the people that is produced in the operating process of compressor.

Background of the present invention and content

Based on the consideration of energy cost and energy conservation, need have a kind of like this refrigeration motor-compression system of output, described output can change according to demand.In order to satisfy this demand, many systems have been developed.A kind of such system relates to be made one or more cylinder unloadings or changes the output that expanding volume changes compression system again in multicylinder compressor.These varying capacity systems are tending towards relative complexization and are not optimum in the efficient of unloaded state lower compression machine.Equally also adopted variable speed compressor, but these variable speed compressors need expensive control piece.At least when system during with the low capacity state of operation, the efficient of speed controlling and the efficient of motor-compressor all can go wrong.

Replaced capacity enough greatly with the separate unit compressor of burden maximum load demand, also developed the compression system that comprises a plurality of less motor compressors, its total output equals required maximum load.These a plurality of compression systeies comprise a kind of device; this device in such a way; promptly when workload demand changes; optionally each mode that activates and shut down in described a plurality of motor compressors is controlled whole system independently, thereby make the output of compression system satisfy required workload demand.These a plurality of compression systeies have high efficient, but they need complicated pipelines and pipe-line system, and these pipelines and pipe-line system comprise the device of lubricant oil being monitored in order to ensure all lubricant oil distributes equably between the compressor of each separate unit.

Other design that is used for many compression systeies comprises a plurality of standard motor compressor units is installed in shared single compressor housing.Common housing has improved the compactedness of system and it to greatest extent and has been provided with the shared oil storage tank that distributes into the equivalent of oil, shared suction port and shared relief opening.Many compression systeies of these single housings have been proved to be able to be accepted by market, but their volume is relatively large and to be used to control the device of whole system still comparatively complicated.The design of other of many compression systeies comprises the opposite side that a pair of compressor is arranged on same live axle.Thereby these designs have reduced size and have reduced complexity and increased their flexibility further, and two compressors can be provided with capacity control system.A problem that is produced when many compression systeies comprise capacity control system is exactly, and when compressor moved under the pattern that is conditioned with the capacity that reduces or capacity, one or two compressors will produce noise.

The sustainable development of many compression systeies be intended to reduce when under the pattern that the capacity that compressor is reducing or capacity are conditioned during operation by the noise of its generation.

Summary of the invention

The invention provides a kind of multiple compressors compression system, wherein the separate unit compressor is positioned at the opposite side of single drive shaft.The single-motor rotor is press fit into the core of live axle and is positioned at the single-motor stator.Like this, two compressors are all driven by the identical rotor and the stator of separate unit motor.The output of many compression systeies control is finished by pulsewidth modulation (PWM) capacity control system, and described control system is attached in of being oppositely arranged or two compressors.When being installed to the PWM capacity control system in one compressor, capacity can from 50% to 100% variation.When being installed to the PWM capacity control system in two compressors, capacity can from 0% to 100% variation.Can adopt vapor injection system that the capacity of or two compressors is increased to the about 120% of capacity in case of necessity, thereby further increase the operating range of two compression systeies.These more than one double compressorss/single motor system can be contained in the single housing in case of necessity.

Except the PWM capacity control system, compressor also is equipped with cage guiding spring (sleeve-guide spring) and thrust ring to reduce any noise that may appear in the compressor capacity adjustment process.The cage guiding spring forces fixed scroll to be resisted against the head of cage guiding bolt, any swing that the scroll member of the orbital motion of thrust ring restriction simultaneously may occur.These two parts can both be used for reducing the noise in the compressor capacity adjustment process.

From hereinafter detailed explanation, other application of the present invention will become obvious.It should be understood that detailed explanation and specific embodiment only are used for the purpose of example, the scope that is not intended to limit the invention in indication the preferred embodiments of the present invention.

Description of drawings

From detailed explanation and accompanying drawing, will understand the present invention more all sidedly, wherein:

Fig. 1 is the perspective view of motor compressor of the present invention system;

Fig. 2 is the vertical cross section that passes motor compression system shown in Figure 1;

Fig. 3 is the sectional view of the amplification of piston assembly shown in Figure 1;

Fig. 4 is the plan view of piston assembly shown in Figure 3;

Fig. 5 is the end view of adjustable compression machine shown in Figure 1, and it shows vapor injection system;

Fig. 6 is the side view of scroll member of the not orbital motion of adjustable compression machine shown in Figure 1, and it shows vapor injection system;

Fig. 7 is the top plan view of scroll member of the not orbital motion of adjustable compression machine shown in Figure 1, and it shows vapor injection system;

Fig. 8 is the sectional view of the amplification of steam injection equipment shown in Figure 1;

Fig. 9 is the end elevation of device shown in Figure 8;

Figure 10 is the schematic representation that has adopted the refrigeration system of capacity control system of the present invention and vapor injection system;

Figure 11 is the perspective exploded view of the frame set of another embodiment of the present invention;

Figure 12 is the sectional view of end cap shown in Figure 11;

Figure 13 is used for the orbital motion of compressor assembly shown in Fig. 1-10 and the perspective view of the installation system of the scroll member that do not allow along track.

Optimum embodiment's detailed description

The following explanation of preferred embodiment only is exemplary from essence, never is to want the present invention, its application or purposes are limited.

Figure 1 illustrates the compression system of multiple compressors of the present invention, it is usually by reference character 10 expressions.Compression system 10 comprises multi-part type seal casinghousing assembly 12, this assembly be provided be positioned at its each place, end, adopt bolted baffle assembly 14 and end cap 16.

Frame set 12 comprises central housing 18 and a pair of middle casing 20, and wherein each middle casing 20 is positioned at the place, opposite end of central housing 18.Each middle casing 20 as shown in Figure 1 by bolt to central housing 18.A middle casing 20 defines the electrical connecting passage 22 that the motor that is used in the frame set 12 provides electricity to be connected with diagnosis.Central authorities' housing 18 has single suction port assembly 24 and single outlet device 26.

With reference to Fig. 2, each baffle assembly 14 comprises the dividing plate 30 of outside plate 28 and horizontal expansion.Every outside plate 28 is connected between the corresponding middle casing 20 and corresponding end cap 16 of frame set 12 by bolt.Thereby each dividing plate 30 sealably engages with corresponding outside plate 28 at the place, opposite end of compression system 10 and limits discharge pressure chamber 32, and the single suction pressure chamber 34 between two baffle assemblies 14.Each discharge pressure chamber 32 is communicated with tapping equipment 26 by conduit 36, and wherein said conduit 36 separates with the body portion of central housing 18 as shown in Figure 1.Similarly, suction pressure chamber 34 is communicated with suction port assembly 24 by conduit 38, and wherein said conduit 38 separates with the body portion of central housing 18 as shown in Figure 1.

Conduit

36 and 38 and the main body composition of central housing 18 from form limited heat transmission between the main body of each conduit and central housing 18.The outlet valve (not shown) can be positioned at conduit 36 Anywhere in case of necessity.

Compressor installation frame 40 is formed by end cap 16, baffle assembly 14 and frame set 12.

The primary component that is fixed to the compression system 10 on the frame set 12 comprises main bearing assembly 42 of a pair of two-piece type (two-piece) and motor stator 44.Have the single drive shaft of a pair of eccentric crank pin 52 or bent axle 50 at place, its opposite end rotatably by pair of bearings 54 journal rests, each bearing fixing is in corresponding main bearing assembly 42.Each crank pin 52 has and is positioned at a lip-deep driving plane.As shown in Figure 2, drive the plane and on rotatable phase, differ 180 ° each other, to reduce exhaust pulse and the bent propeller shat in the compression system 10 is minimized.

Oil pump 58 is fixed on one of them main bearing assembly 42, and the impeller of oil pump 58 drives pin-and-hole by bent axle 50 drivings by adopting.Bent axle 50 have the axis elongated hole 62 that extends from an end and extend from the opposite end extend axially hole 64.Axial bore 62 is communicated with radial hole to receive from the lubricant oil of oil pump 58 and to a side of compression system 10 provides lubricant oil.Axial bore 64 is communicated with radial hole to receive from the lubricant oil of oil pump 58 and to the opposite side of compression system 10 provides lubricant oil.Rod radial air vent is communicated with axial bore 64.In addition, a pair of radial hole is supplied to main bearing assembly 42 with lubricant oil, and in the wherein said a pair of radial hole one extends from axial bore 62, and another extends from axial bore 64.The second group of radial hole that extends from axial bore 64 is supplied to the coil 76 that passes motor stator 44 with lubricant oil and is used for cooling purpose.The bottom of frame set 12 defines oil groove 78, and this oil groove 78 is full of lubricant oil is arranged, and height level's line of its lubricant oil is lower than the following horizontal plane in lower end of motor stator 44 slightly.Oil pump 58 is from oil groove 78 oil pumping and lubricant oil is pumped to the parts of compression system 10 by each hole in the bent axle 50.

Bent axle 50 is driven rotatably by electric notor, and this electric notor comprises motor stator 44, pass the coil 76 of motor stator 44 and be press fit into rotor 80 on the bent axle 50.A pair of equilibrium block 82 is fixed on the opposite end of the bent axle 50 adjacent with corresponding crank pin 52.

The upper surface of each two-piece main bearing assembly 42 is provided with smooth thrust bearing surface 84, and this surface is provided with the scroll member 86 of corresponding orbital motion, and this scroll member has from end plate 90 outward extending common helical blade or scrollworks 88.Wheel hub 92 cylindraceous is outwards outstanding from the lower surface of each end plate 90 of the scroll member 86 of each orbital motion, described cylindric wheel hub 92 has the shaft bearing that is positioned at herein, and rotatably be provided with therein and drive lining 96, this lining has endoporus, and wherein corresponding crank pin 52 can be positioned at this endoporus drivingly.Each crank pin 52 has and is positioned at a lip-deep driving plane, this driving plane can engage drivingly with plane in being formed at each a part of inner casing that drives lining 96, thereby provide the drive arrangement of radial compliance, for example shown in assignee's the U. S. Patent 4877382 like that, here the content of this patent is introduced for your guidance.Describing in detail, driving plane rotation phase difference each other is 180 ° as previous.Pair of O ldham link 98 also is provided, and one of them is arranged between the scroll member 86 and each two-piece main bearing assembly 42 of each orbital motion.Each Oldham link 98 key is connected in the scroll member 86 of corresponding orbital motion and does not rotate with the scroll member 86 that prevents orbital motion on the scroll member 100 of orbital motion accordingly.But each Oldham link 98 key is connected on the scroll member 86 and corresponding main bearing assembly 42 of corresponding orbital motion in case of necessity.

Each not the scroll member 100 of orbital motion also be provided with from end plate 104 outward extending scrollworks 102, this end plate is configured to be meshed with the corresponding scrollwork 88 of the scroll member 86 of corresponding orbital motion.Each not the scroll member 100 of orbital motion have the discharge passage 106 that is positioned at the center, this passage is communicated with the fluting 108 that is positioned at the center, fluting 108 is communicated with corresponding discharge pressure chamber 32 fluids successively.Annular groove 112 also is formed on each not in the scroll member 100 of orbital motion, described each be not provided with corresponding floating seal assembly 114 in the scroll member 100 of orbital motion.

Groove

108 and 112 and floating seal assembly 114 cooperatively interact to limit axial pressure bias chamber, this bias chamber receives by

corresponding scrollwork

88 and 102 pressure fluids that compressed, thereby the axial bias masterpiece is used on the scroll member 100 of corresponding not orbital motion, impels the top of corresponding scrollwork 88,102 to engage with the relative end plate face seal ground of

end plate

104 and 90 respectively thus.The sort of type that floating seal assembly 114 is preferably more described in detail in assignee's U.S. Patent No. 5156539, here that this patent is disclosed content is introduced for your guidance.The scroll member 100 of orbital motion is not designed to suitable manner, for example the axial motion that is used to limit with respect to two-piece main bearing assembly 42 is installed, here the disclosed content of this patent is introduced for your guidance in the sort of mode disclosed in aforesaid U.S. Patent No.4877382 or assignee's the U.S. Patent No. 5102316.

Frame set 12 defines suction pressure chamber 34, the pressurized gas that this pressure chamber receives from suction port assembly 24 by conduit 38.Gas in the suction pressure chamber 34 is inhaled at the radially outer place of two groups of intermeshing

scroll members

86 and 100, and by 88,102 compressions of two groups of scrollworks, is discharged in the discharge pressure chamber 32 by discharge passage 106 and groove 108 then.Pressurized gas is discharged in each discharge pressure chamber 32 by conduit 36 and tapping equipment 26.

Referring now to Fig. 2, compression system 10 comprises unique according to an embodiment of the invention capacity control system and vapor injection system.Compression system 10 comprises the capacity control system 212 and the vapor injection system 214 of each compressor that is positioned at compression system 10.

For each compressor, capacity control system 212 all is identical and comprises tapping equipment 216, piston 218, shell body device 220, solenoid valve 222, control module 224 and the sensor array 226 with one or more suitable sensor.Tapping equipment 216 threadably engages or otherwise is fixed in the fluting 108, and as shown in Figure 3, tapping equipment 216 limits an inner chamber 228 and a plurality of discharge passage 230.Outlet valve 232 is positioned at the below of tapping equipment 216.Like this, thus the gas of pressurized will overcome that the bias load of outlet valve 232 is opened outlet valve 232 and the gas that allows to pressurize flow in chamber 228 and the discharge pressure chamber 32 by discharge passage 230.

Referring now to Fig. 2 and Fig. 3, tapping equipment 216 and piston 218 assemblies will be shown in more detail.Tapping equipment 216 defines the flange 234 of annular.Lip seal 236 and floating retainer rings 238 are resisted against flange 234 and seal.Piston 218 is fixed on the tapping equipment 216 with press fit or alternate manner, and piston 218 defines annular flange flange 240, and this annular flange flange is clipped between lip seal 236 and the floating retainer rings 238, and floating retainer rings is between flange 240 and flange 234.Tapping equipment 216 defines passage 242 and aperture 244,216 fluid ground link to each other discharge pressure chamber 32 with pressure chamber 246 thereby described aperture 244 extends through tapping equipment, and wherein pressure chamber 246 is limited by tapping equipment 216, piston 218, lip seal 236, floating retainer rings 238 and shell body device 220.Shell body device 220 is fixed on the end cap 16 and holds tapping equipment assembly 216, piston 218, lip seal 236 and floating retainer rings 238 slidably.As shown in Figure 2, shell body device 220 can be an one with end cap 16, and perhaps shell body device 220 can be for being connected to the single parts of end cap 16 by bolt or other device well known in the prior art.Pressure chamber 246 is connected on the solenoid valve 222 by managing 250 fluids, and links to each other with suction pressure chamber 34 by pipe 252.The combination results of piston 218, lip seal 236 and floating retainer rings 238 sealing system of self centering, thereby form accurate the aligning with the endoporus of shell body device 220.Lip seal 236 and floating retainer rings 238 have enough radial compliance, thereby any skew between the endoporus of open recess 108 all can be by lip seal 236 and floating retainer rings 238 adjustings, and wherein tapping equipment 216 is fixed in the endoporus of fluting 108.

Under normal full load mode, for will be not the scroll member 86 that is biased into orbital motion of the scroll member 100 of orbital motion form sealing engagement, the signal of response sensor array 226, by control module 224 solenoid valve 222 is quit work (perhaps make its start) thus stop pipe 250 and the fluid of managing between 252 flows.In this case, pressure chamber 246 is communicated with discharge pressure chamber 32 by passage 242 and aperture 244.Be positioned at

pressure chamber

32 and 246 and be in the opposite side that pressure fluid under the discharge pressure will act on piston 218, thereby the scroll member 100 that allows orbital motion not carries out normal bias voltage towards the scroll member 86 of orbital motion, so that the axial end of each scroll member engages hermetically with the respective end plates of relative scroll member.Two scroll

members

86 and 100 axial seal make compression system 10 operate with 100% capacity.

In order to make compression system 10 unloadings, the signal of control module 224 response sensor arrays 226 starts (perhaps making it to quit work) with solenoid valve 222.When solenoid valve 222 starts (it is quit work), suction pressure chamber 34 will by manage 252, solenoid valve 222 and manage 250 and directly be communicated with pressure chamber 246.As shown in Figure 2, by discharging from the discharge pressure of the pressure fluid of pressure chamber 246 suctions, pressure reduction on piston 218 opposite sides will make not, and scroll member 100 courts of orbital motion move away from the direction of the scroll member 86 of orbital motion, so that the axial end at each scroll member top and its corresponding end plate be separated, and the chamber of elevated pressures (pocket) will to the chamber of lower pressure exhausting air and the most at last gaseous emission to suction pressure chamber 34.Aperture 244 constitutes the flow of the discharge gas between control discharge pressure chamber 32 and the pressure chamber 246.Therefore, when pressure chamber 246 links to each other with the suction side of compressor, will on piston 218 opposite sides, produce pressure reduction.Wavy spring 260 constitutes conditioning period at the scroll member 100 of orbital motion not and keeps sealing relationship between floating seal assembly 114 and the baffle assembly 14.When between two

scroll members

86 and 100, producing the gap, will eliminate sucking the continuous compression that gas carries out.When unloading takes place, outlet valve 232 will move to the position of closing, thereby prevent that the high fluid of pressure from refluxing from the refrigeration system in discharge pressure chamber 32 or downstream.When recovering when sucking the compression of gas, solenoid valve 222 will quit work (perhaps being activated) thereby stop flowing of fluid between the

pipe

250 and 252 once more, exert pressure by 244 pairs of discharge pressure chambeies 32 of passage 242 and aperture with authorized pressure chamber 246.

Control module 224 is communicated with sensor array 226 thinks that control module 224 provides required information, thus definite required unloading degree of special operation condition that comprises the refrigeration system of compression system 10 at the moment.According to this information, control module 224 will be operated solenoid valve 222 so that pressure chamber 246 alternately is communicated with discharge pressure chamber 32 and suction pressure chamber 34 with PWM mode.The operating frequency of solenoid valve 222 under PWM mode will determine one group of scroll member 86 of

compression system

10 and 100 percentage operation capacity.When sensed condition changes, control module 224 will change the operating frequency of solenoid valve 222, thereby change one group of

scroll member

86 and 100 operated relative time section under loading environment and unloading condition of compression system 10.The variation of solenoid valve 222 operating frequencies can make one group of

scroll member

86 and 100 at full capacity or 100% capacity and operate at unloading or 0% capacity or any accurate setting value place between the responding system demand entirely.Because two compressors of compression system 10 comprise capacity control system 212, the effect that therefore will bring the capacity of compression system 10 between 0% and 100%, to change.

Referring now to Fig. 5,6 and 7, they show the vapor injection system 214 of compression system 10 in more detail.For two compressors, compression system 10 comprises makes steam in suction pressure chamber 34 and the discharge pressure chamber 32 middle abilities of a bit locating to be ejected in the intermediate pressurised activity chamber.For each vapor injection system 214, steam injection equipment 270 is connected on the injection pipe 272 with extending through frame set 12 and fluid, and this injection pipe is connected to again on the injection apparatus 274 on the scroll member 100 that is fixed on orbital motion not successively fluid.The scroll member 100 of orbital motion does not define a pair of radial passage 276, and each bar radial passage all extends between injection apparatus 274 and a pair of axial passage 278.Axial passage 278 is opened to a movable chamber on the opposite side of the scroll member 100 of orbital motion not that is positioned at compression system 10, thereby sprays steam in these movable chambeies according to the demand of the control system of knowing in the prior art.

Referring now to Fig. 8 and 9, they show steam injection equipment 270 in more detail.Steam injection equipment 270 comprises inner 280 and outside 282.Inner 280 comprise L shaped passage 284, and this passage at one end sealably accommodates jet pipe 272.Outside 282 outsides from frame set 12 extend to the inside of frame set 12, and wherein it can become a unit or form one with inside 280.Welding or brazing joint 286 are fixed steam injection equipment 270 and be sealed on the frame set 12.Outside 282 define hole 290, and this hole is the extension part of L shaped passage 284.Outside 282 also define cylinder-shaped hole 292, and wherein the pipe portion of refrigeration system is fixed on this hole 292.

Figure 10 shows the vapor injection system 214 that is used for the vapor injection system of compression system 10 is provided steam.Compression system 10 is illustrated in the refrigeration system, as shown in figure 10, this refrigeration system comprises a series of pipe 304 that condenser 294, first expansion valve or throttle valve 296, flash drum or saver 298, second expansion valve or throttle valve 300, vaporizer 302 and connected element are used.Thereby compression system 10 is handled compression refrigeration gas by motor.Compressed gas is then by condenser 294 liquefaction.Refrigeration agent after the liquefaction passes expansion valve 296 and expands in flash drum 298, and it is separated into gas and liquid in flash drum.Gas refrigerant further passes pipeline 306 and is directed in the compression system 10 by steam injection equipment 270.On the other hand, the remaining fluid cryogen further expands in expansion valve 300, and evaporation in vaporizer 302 then enters into compression system 10 again.

The capacity in conjunction with each the group scroll member 86 that allows

compression system

10 and 100 of the other parts of flash drum 298 and vapor injection system 214 is increased on each

group scroll member

86 and 100 fixed capacity of compression system 10.Usually, under the air-conditioning state of standard, thereby wherein the capacity of a compressor can approximately increase by 20% and will make one group of scroll member have 120% of its capacity, this capacity be compression system 10 capacity 110%.If two compressors all approximately increase by 20%, the capacity of compression system 10 will increase to 120% of its normal capacity so.In order to control each group scroll member 86 and capacity of 100 of compression system 10, solenoid valve 308 is arranged in the pipeline 306.Operate the vapor injection system 214 of two compressors if desired independently, the other solenoid valve 308 that is used for every compressor can be combined with independent pipeline so.The every group of scroll member 86 of compression system 10 and the increase percentage of 100 capacity can be controlled by operation solenoid valve 308 under PWM mode.When the capacity control system 212 together with compression system 10 was operated under PWM mode, solenoid valve 308 allowed any value of capacity between 0% to 120% of compression system 10.

Referring now to Figure 11 and 12, they show frame set 312 of the present invention.Frame set 312 comprises a pair of end cap 316 and central housing 318.Each end cap 316 all is the overall structure of single sheet, and this overall structure comprises the extension part of central housing 20, end cap 16 and conduit 36, and this structure has been eliminated the needs to baffle assembly 14.The integrated complexity and the cost of having reduced of these parts.End cap 316 defines surface 320 that engages with floating seal assembly 114 and the discharge passage 322 that is communicated with the conduit 36 that is limited by central housing 318.Similar with Fig. 2, outlet valve can be set in the conduit 36 Anywhere, and conduit 36 also can comprise the extension part of the conduit 36 that is limited by end cap 316 in case of necessity.

Central authorities housing 318 define tapping equipment 26 and conduit 36, the body portion of this conduit and central housing 318 from.In addition, central housing 318 defines electrical connecting passage 326, and this passage is used for providing electric power and diagnosis to the motor that is arranged in the central housing 318.One end cap 316 defines suction port assembly 24, has so just eliminated the needs to conduit 38.

Motor that is positioned at frame set 12 shown in Fig. 2 and compressor are designed to be assemblied in frame set 312.Therefore, the description of the motor of the above-mentioned Fig. 2 of being used for and compressor equally also is applicable to frame set 312.

Each end cap 316 is suitable for comprising capacity control system 212 with the similar mode shown in Fig. 2.With with end cap 16 similar modes, shell body device 220 can form one with end cap 316, perhaps also can be the separate part that is connected on the end cap 316.

In addition, central housing 318 can be suitable for comprising above-mentioned vapor injection system 214.Therefore, the description of the relevant capacity control system 212 of above-mentioned Fig. 1 of being used for-10 and vapor injection system 214 is equally applicable to comprise the frame set of end cap 316.

Referring now to Fig. 2 and Figure 14, they show the installation system of the scroll member 86 of the scroll member 100 of orbital motion not and orbital motion.As previously mentioned, the scroll member 100 of orbital motion is not installed into and can has confined axial motion with respect to two-piece main bearing assembly 42.

The scroll member 100 of orbital motion does not comprise lip part 380, and this lip part 380 has the opening 382 that is positioned at it.In opening 382, the cylindrical shape lining 384 of lengthening is installed, the lower end of this lining is positioned on the main bearing assembly 42.Bolt 388 with head packing ring 390 extends through the hole 392 that axis extends, and extends to the threaded openings that is positioned at main bearing assembly 42, and wherein said hole 392 is positioned at lining 384.As shown in the figure, the diameter in the hole 392 of lining 384 is a bit larger tham the diameter of bolt 388, thereby can carry out certain relative movement between them, so that the scroll member 100 of orbital motion can finally accurately not located.In case the scroll member 100 of orbital motion and after therefore lining 384 has been positioned is not clamped in lining 384 between main bearing assembly 42 and the packing ring 390 regularly thereby can impose suitable moment to bolt 388.Packing ring 390 is used to guarantee on the lining 384 uniformly circumferential load and for the head of bolt 388 provides supporting surface, thereby avoids any potential the moving of lining 384 when bolt 388 is imposed final moment.It should be noted that as shown in figure 13, the scroll member 100 that the axial length of lining 384 is enough to allow orbital motion not axially moves on the direction away from the scroll member 86 of orbital motion and main bearing assembly 42 slidably along lining 384.So just provide as the packing ring 390 of the positive stop (positive stop) that limits this motion and the head of bolt 388 for the axial elasticity erecting device.The external diameter of lining 384 be slightly smaller than opening 382 between, the scroll member 100 of orbital motion slides thereby allow not.

Outwards the longitudinal center line of outstanding lip part 380 is positioned in the effect barycenter of lip part 380.By lip part 380 is arranged on the height identical with the effect barycenter of the active force that is born, lining 384 is (equal) and coplane stably, and can reduce and/or eliminate any arm of force of scroll member turning torque.

Biasing spring 396 is around the lining 384 and not between the scroll member 100 and main bearing assembly 42 of orbital motion.Carry out normal operation period at compression system 10, because the pressure fluid in

groove

108 and 112, therefore act on each not the axial bias power on the scroll member 100 of orbital motion will overcome the biasing force of spring 396, and impel scrollwork 88 to form sealing engagement with the relative end sheet surface of

end plate

104 and 90 respectively with 102.Regulate compression system 10 during,

scrollwork

88 and 102 and the relative end sheet surface of

end

104 and 90 between produced the gap respectively.The lip part 380 of the scroll member 100 of orbital motion can not float between packing ring 390 and main bearing assembly 42.This motion small axial clearance between the opening 382 in lining 284 and lip part 380 has produced the noise of disturbing the people.Spring 396 makes not that the lip part 380 of the scroll member 100 of orbital motion is biased on the packing ring, thereby has eliminated any play or gap between these parts, has therefore also just eliminated the noise of disturbing the people.

The swing of the scroll member 86 of orbital motion is another problem and another noise source of disturbing people relevant with the modulation of compression system 10.During the normal running of compression system 10, each not the scroll member 100 of the orbital motion axial bias that is resisted against the scroll member 86 of orbital motion also make the scroll member 86 of orbital motion be biased on the smooth bearing surface 84 of main bearing assembly 42.In the adjusting of compression system 10, this bias voltage load that is applied by the scroll member 100 of orbital motion not will be released and will form the gap between the scroll member 86 of orbital motion and smooth bearing surface 84.Carry out continuous driving by the scroll member 86 of 52 pairs of orbital motions of eccentric crank pin of bent axle 50 and will make the scroll member 86 of orbital motion swing, thereby produce the noise of disturbing the people.Thrust ring 400 comprises that a plurality of being used for is connected to a plurality of flanges 402 on each two-piece type bearing assembly 42 with corresponding thrust ring 400.Thrust ring 400 also comprises ring bodies 404, the end plate 90 adjacent settings of the scroll member 86 of this ring bodies and orbital motion.Like this, the end plate 90 of the scroll member 86 of orbital motion is sandwiched between the smooth supporting surface 84 of the ring bodies 404 of thrust ring 400 and two-piece main bearing assembly 42.Micro-gap between these parts is held to allow the scroll member 86 unrestricted orbitings of orbital motion.Like this, when the adjusting of compression system 10 began, the swing of the scroll member 86 of orbital motion and consequent any people's of disturbing noise all will be reduced and/or eliminate.

Description of the invention all only is exemplary from essence, and therefore do not deviate from the distortion of purport of the present invention all should be within the scope of the present invention.These distortion are not considered to deviate from the spirit and scope of the present invention.

Claims

1. scroll machine comprises:

First scroll member, first scrollwork that it has first end plate and extends from described end plate;

Second scroll member, second scrollwork that it has second end plate and extends from described end plate; It is interlaced with each other that described first and second scroll members are arranged to described first and second scrollworks;

First support housing, this housing support described first scroll member; With

Be fixed on first thrust plate on described first support housing, described first end plate of described first scroll member is set between described first thrust plate and described first support housing.

2. scroll machine as claimed in claim 1, it is characterized in that, described second scroll member can be with respect to the motion between first and second relations of described first support housing, wherein in described first relation, the sealing surfaces of described first and second scroll members is in the sealing relationship with first-class body cavity sealing, in described second relation, thereby at least one of the described sealing surfaces of described first and second scroll members is spaced apart between two described first-class body cavitys and limits leakage way, and described scroll machine also comprises and is used to force the bias piece of described second scroll member towards described second relation.

3. scroll machine as claimed in claim 1 comprises that also by the rotatably mounted live axle of described first support housing, described live axle links to each other with described first scroll member.

4. scroll machine as claimed in claim 3 also comprises the motor that can be connected to drivingly on the described live axle.

5. scroll machine as claimed in claim 4 is characterized in that, described motor is a variable speed driver.

6. scroll machine as claimed in claim 1 also comprises the capacity modulation that links to each other with described first and second scroll members.

7. scroll machine as claimed in claim 6 is characterized in that described capacity modulation comprises variable duration impulse system.

8. scroll machine as claimed in claim 1 also comprises fluid ejection apparatus, and one in this injection apparatus and the described scroll member is communicated with, and is used for described first and second scroll members are carried out the operation of vapor injection system.

9. scroll machine as claimed in claim 8 also comprises the capacity modulation that links to each other with described first and second scroll members.

10. scroll machine as claimed in claim 9 is characterized in that described capacity modulation comprises variable duration impulse system.

11. scroll machine as claimed in claim 1 also comprises:

The 3rd scroll member, the 3rd scrollwork that it has the 3rd end plate and extends from the 3rd end plate;

It is interlaced with each other that the 4th scroll member, the 4th scrollwork that it has the 4th end plate and extends from the 4th end plate, described third and fourth scroll member are configured to their third and fourth scrollwork;

Second support housing, itself and described first support housing are separated, and described second support housing is supporting described the 3rd scroll member; With

Second thrust plate, it is fixed on described second support housing, and described the 3rd end plate of described the 3rd scroll member is set between described second thrust plate and described second support housing.

12. scroll machine as claimed in claim 11 is characterized in that,

Described second scroll member can be with respect to the motion between first and second relations of described first support housing, wherein in described first relation, the sealing surfaces of described first and second scroll members is in the sealing relationship with first-class body cavity sealing, in described second relation, thereby at least one of the described sealing surfaces of described first and second scroll members is spaced apart between two described first-class body cavitys and limits leakage way; And

Described the 4th scroll member can be with respect to the motion between first and second relations of described second support housing, wherein in described first relation, the sealing surfaces of described third and fourth scroll member is in the sealing relationship with the sealing of second fluid chamber, in described second relation, thereby at least one of the described sealing surfaces of described third and fourth scroll member is spaced apart between two described second fluid chambers and limits leakage way;

Described scroll machine also comprises and is used to force first bias piece of described second scroll member towards described second relation;

Described scroll machine also comprises and is used to force second bias piece of described the 4th scroll member towards described second relation.

13. scroll machine as claimed in claim 11 comprises that also described live axle links to each other with the 3rd scroll member with described first by the rotatably mounted live axle of described first and second support housings.

14. scroll machine as claimed in claim 13 also comprises the motor that can be connected drivingly on the described live axle, described motor is between described first and second support housings.

15. scroll machine as claimed in claim 14 is characterized in that, described motor is a variable speed driver.

16. scroll machine as claimed in claim 11 also comprises first capacity modulation that links to each other with described first and second scroll members and second capacity modulation that links to each other with described third and fourth scroll member.

17. scroll machine as claimed in claim 16 is characterized in that, each in described first and second capacity modulations all comprises variable duration impulse system.

18. scroll machine as claimed in claim 11, also comprise the first fluid injection apparatus and second fluid ejection apparatus, one in described first injection apparatus and described first and second scroll members is communicated with, be used for described first and second scroll members are carried out the operation of first vapor injection system, one in described second injection apparatus and described third and fourth scroll member is communicated with, is used for described third and fourth scroll member is carried out the operation of second vapor injection system.

19. scroll machine as claimed in claim 18 also comprises first capacity modulation that links to each other with described first and second scroll members, and second capacity modulation that links to each other with described third and fourth scroll member.

20. scroll machine as claimed in claim 19 is characterized in that, each in described first and second capacity modulations all comprises variable duration impulse system.