CN106194750A - Scroll compressor having a plurality of scroll members - Google Patents
Scroll compressor having a plurality of scroll members Download PDFInfo
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- CN106194750A CN106194750A CN201510216987.5A CN201510216987A CN106194750A CN 106194750 A CN106194750 A CN 106194750A CN 201510216987 A CN201510216987 A CN 201510216987A CN 106194750 A CN106194750 A CN 106194750A
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- compression mechanism
- screw compressor
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- main bearing
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Abstract
The present invention relates to a scroll compressor. The scroll compressor according to the present invention includes: a compression mechanism adapted to compress a working fluid and including an orbiting scroll member, a non-orbiting scroll member, and a suction window through which the working fluid can flow into the compression mechanism; a drive mechanism including a drive shaft and adapted to drive the compression mechanism; a suction attachment through which the working fluid can flow into the scroll compressor and can flow to the compression mechanism; and a lubrication system including a lubricant source and a compression mechanism oil supply device adapted to supply lubricant from the lubricant source to the compression mechanism. The oil supply device of the compression mechanism is provided with an oil supply pore passage, and the outflow opening of the oil supply pore passage is positioned between the opening of the suction accessory and the suction window. According to the present invention, the oil circulation rate can be made to be within a proper range at different compressor speeds and/or different system operating parameters.
Description
Technical field
The present invention relates to screw compressor, compress mechanism's fueller more particularly, to a kind of
Moderate oil supply aspect has the screw compressor of improvements.
Background technology
Compressor (such as screw compressor) can apply to such as to freeze (freezing or cold preservation) be
In system, air conditioning system and heat pump.Screw compressor includes for compression work fluid (such as
Cold-producing medium) compression mechanism, compression mechanism and then include dynamic scroll element and determine scroll element.Whirlpool
Rotation compressor in the running, compression mechanism dynamic scroll element with determine to exist between scroll element phase
To motion.In order to reduce abrasion and reduce power consumption, need to provide lubrication (such as to supply to compression mechanism
To lubricating oil) to improve dynamic scroll element and the friction determined between scroll element, the most produced
Oil film can also improve the sealing of compression mechanism thus improve volumetric efficiency etc..
Generally, the number of the lubricating oil carried by working fluid can be characterized with oil recycle ratio, and
And correspondingly can represent the degree to compression mechanism supply lubricating oil with oil recycle ratio.Lubricating oil
Too much supply or very few supply all can be to the normal operation of compression mechanism itself and systematic function
Etc. adversely affecting.Such as, excessive oil recycle ratio can reduce the heat exchange efficiency of system, and
Also grease accumulation can be made to determine the outlet of scroll element and discharge the discharge valve assembly at recess
The surrounding (the especially top of discharge valve assembly) of (such as HVE valve module) and be scroll compression
Contracting machine brings some problem (the stable operation sex chromosome mosaicism of such as discharge valve assembly and/or compression mechanism
Aerofluxus integrity problem).
It addition, employ variable speed compressor for system, (this variable speed compressor needs with different rotating speeds
Operation) and/or system need to operate with different parameters (especially different evaporating temperature)
Situation, it may be desirable to, it is provided that one can operate at different compressors rotating speed and/or different system
The compression mechanism fueller that oil recycle ratio is all in proper range is made under parameter.
And, for constant speed compressor, it would also be desirable to provide one can be applicable to tool
There is the compression mechanism fueller that the versatility of a series of constant speed compressors of different rotating speeds is good, should
Compression mechanism fueller can be for each constant speed compressor under the most different rotating speeds at offer
Oil recycle ratio in proper range.
Here, it is noted that the technology contents provided in this part is intended to contribute to ability
Field technique personnel's the understanding of the present invention, and not necessarily constitute prior art.
Summary of the invention
Total summary of the present invention rather than the complete scope of the present invention or the present invention are provided in this part
The comprehensive disclosure of all features.
It is an object of the present invention to provide a kind of fuel feeding target having and being capable of on-demand band oil
Screw compressor with the compression mechanism fueller of concept.
It is a further object of the present invention to provide that one has can at different compressors rotating speed and/or not
The compression mechanism fuel feeding dress that oil recycle ratio is all in proper range is made under homologous ray operating parameters
The screw compressor put.
It is a further object of the present invention to provide one have can be effectively prevented low evaporating temperature/
Under the slow-speed of revolution, oil recycle ratio is far beyond the compression mechanism fueller of the situation of the expected range upper limit
Screw compressor.
It is a further object of the present invention to provide a kind of tune having and can improving oil recycle ratio fully
The precision of joint and the screw compressor of the compression mechanism fueller of design freedom.
One or more, according to the present invention in achieve these goals, it is provided that a kind of scroll compression
Contracting machine, including: compression mechanism, described compression mechanism is suitable to compression work fluid and includes dynamic whirlpool
Revolving parts, determine scroll element and suck window, working fluid can flow into via described suction window
In described compression mechanism；Drive mechanism, described drive mechanism includes drive shaft and is suitable to drive institute
State compression mechanism；Sucking accessory, working fluid can flow into described vortex via described suction accessory
Compressor is interior and then can flow to described compression mechanism；And lubricating system, described lubricating system
Including lubricant source be suitable to lubricant from the supply of described lubricant source to described compression mechanism
Compression mechanism fueller.Described compression mechanism fueller has fuel feeding duct, described oil supplying hole
The outflow opening in road is between the opening and described suction window of described suction accessory.
According to the present invention, during screw compressor operates, when from lubricant source lubricant from
When the opening of cross-drilled hole is discharged, the lubricant discharged meets with the pressure working fluid sucked, makes
Obtain pressure working fluid can be brought into by a part of lubricant in compression mechanism.So, it is achieved that press
Need fuel feeding target and the concept of band oil (that is, take how many away at least more than so-called needs).
Specifically, on the one hand, such as slow-speed of revolution operating mode, be not provided with for compression
The scheme of the active oil injection mechanism of mechanism's fuel feeding is compared, and can increase oil recycle ratio and make it be in the phase
In the range of prestige.On the other hand, such as high speed conditions, also will not exceedingly increase oil
Cycling rate (the most only can slightly increase oil recycle ratio) and make it be maintained at expected range
In (such as, this is due to the driven whirlpool when compressing the every moving of mechanism one and enclosing of lubricant at high speed
The lubricant quality that rotation substrate is discharged diminishes relatively).Thus, it is possible to different compressors rotating speed and/
Or under different system operating parameters, make oil recycle ratio all be in proper range.Especially, permissible
It is effectively prevented under low evaporating temperature/slow-speed of revolution oil recycle ratio far beyond the expected range upper limit
Situation.It can thus be avoided too high oil recycle ratio causes lubricant accumulation at discharge valve assembly
It is around that screw compressor brings stability and integrity problem.
It addition, according to the present invention, there is the counterbore of more large diameter by setting, by arranging outlet
Hole and/or have the plug that the internal diameter of through hole and through hole can be less by setting, can
To improve precision and the design freedom of the regulation of oil recycle ratio fully, so that compression mechanism
Fueller has more excellent versatility and the suitability.
Accompanying drawing explanation
By description referring to the drawings, the feature of one or more embodiments of the present invention and
Advantage will become better understood by, in the accompanying drawings:
Fig. 1 is the screw compressor illustrating and applying the compression mechanism fueller according to the present invention
Longitudinal section；
Fig. 2 is to illustrate the compression mechanism fueller being combined with according to first embodiment of the invention
The longitudinal section of dynamic scroll element；
Fig. 3 is to illustrate the compression mechanism fueller being combined with according to first embodiment of the invention
The sectional elevation of compression mechanism；
Fig. 4 is to illustrate the compression mechanism fueller being combined with according to first embodiment of the invention
The axonometric chart of a part for screw compressor；
Fig. 5 is to illustrate the compression mechanism fueller being combined with according to second embodiment of the invention
The longitudinal section of dynamic scroll element；
Fig. 6 is the schematic diagram of the exemplary parameter scope illustrating exemplary refrigeration system；
Fig. 7 is the screw compressor illustrating and applying the compression mechanism fueller according to correlation technique
The longitudinal section of a part；And
Fig. 8 is the compression mechanism illustrating and applying the compression mechanism fueller according to correlation technique
Sectional elevation.
Detailed description of the invention
With reference to the accompanying drawings, describe the present invention by illustrative embodiments.To this
That invents is described in detail below merely for the sake of illustration purpose, and is definitely not the present invention and application thereof
Or the restriction of purposes.
First, the compression mechanism fueller applied according to the present invention is summarily described with reference to Fig. 1
The structure of screw compressor (Fig. 1 is to illustrate the compression mechanism fuel feeding dress applied according to the present invention
The longitudinal section of the screw compressor put).
As it is shown in figure 1, screw compressor 100 can include housing 110.Housing 110 can wrap
Include the top cover 114 at the top of the enclosure body 112 in substantially tubular, installation to enclosure body 112
And the bottom 116 of the bottom to enclosure body 112 is installed.Housing 110 limits screw compressor
The internal capacity IV of 100.It addition, be also provided with dividing plate 119 in housing 110 so that
Dividing plate 119 and top cover 114 limit higher-pressure region HR, and (higher-pressure region HR is suitable to store to be discharged temporarily
Pressurized working fluid to outside compressor), and dividing plate 119 and enclosure body 112 and bottom 116
Limit low-pressure area LR.It addition, the lubricant of such as lubricating oil can be stored in housing 110
In oil sump OR at the bottom of internal capacity IV.In the example shown in the series of figures, screw compressor is
So-called low-pressure side screw compressor.
Screw compressor 100 can also include sucking accessory 194.In the example shown in the series of figures, vortex
Compressor 100 can use middle part air inlet design, that is, suck accessory 194 compressor shaft to
Side is upwardly arranged at the position substantially aligned with main bearing seat 180.Thus, through vaporizer
Low-temp low-pressure working fluid after evaporation can be sucked into scroll compression via sucking accessory 194
To be compressed in machine 100.
Screw compressor 100 can also include drive mechanism 130.Drive mechanism 130 can include
Electro-motor 132 and drive shaft 134.Electro-motor 132 can include stator 137 and rotor 138.
Stator 137 may be fixedly attached to the inner circumferential wall of enclosure body 112, and rotor 138 is permissible
It is enclosed within regularly in drive shaft 134 to rotate integratedly with drive shaft 134.In drive shaft 134
Cam pin 139 can be provided with at top ends.Here, it should be understood that, it is also possible to use and do not have
Other drive mechanism of electro-motor.
Screw compressor 100 can also include main bearing seat 180.Main bearing seat 180 can be fixed
Be connected to the inner circumferential wall of enclosure body 112.Such as, main bearing seat 180 can be many by it
The individual radial direction teat being circumferentially spaced and be fixedly connected to the inner circumferential wall of enclosure body 112,
Make between the inner circumferential wall of main bearing seat 180 and enclosure body 112 (that is at main bearing seat
Between the adjacent radial teat of 180) it is formed with multiple main bearing seat passage PG such as to allow to inhale
Enter passing through of the pressure working fluid to internal capacity IV.Main bearing seat 180 is suitable to via setting
Put the base bearing 182 in main bearing seat 180 and support a part for drive shaft 134.
Screw compressor 100 can also include the pressure being suitable to compression work fluid (such as cold-producing medium)
Contracting mechanism CM.Compression mechanism CM can include dynamic scroll element 150 and determine scroll element 160.
In some instances, compression mechanism CM may be embodied as asymmetric compression mechanism.
Dynamic scroll element 150 may include that substrate 152；Radial direction from the upper surface of substrate 152
The upwardly extending helical form of central part moves scrollwork 154；And the radial direction of the lower surface from substrate 152
The hub portion 156 that central part downwardly extends.Dynamic scroll element 150 can be arranged in main bearing seat 180,
And axially it is supported to carry out moving by main bearing seat 180.Cam pin 139 can drive
Be attached to (being inserted into) hub portion 156 (such as via unloading lining 190 and/or driving bearing).
Determine scroll element 160 and may include that substrate 162；From the lower surface of substrate 162 to downward
The helical form stretched determines scrollwork 164；It is formed at being suitable to and compressor of approximate center of substrate 162
The outlet 166 of the central high pressure room connection of structure CM；And be formed at substrate 162 substantially in
Recess 168 at the heart, recess 168 is positioned at above outlet 166 and is suitable to and outlet 166
Connect and be suitable to connect with higher-pressure region HR.Discharge valve assembly can be provided with in recess 168
(such as HVE valve module) 192, in order to control the aerofluxus of compression mechanism CM.In showing of diagram
In example, determine scrollwork 164 and can include being positioned at (annular) outer wall 164a of outermost radial outside, and
In outer wall 164a, suitable circumferential position can be provided with compression mechanism and suck window SW,
Sucking window SW allows pressure working fluid to be sucked in compression mechanism CM.
Determine scrollwork 164 be suitable to and move scrollwork 154 and engage, thus limit the work of a series of crescent
Fluid containment room.These accommodating chambers may include that untight just in the suction that the pressure of air inlet is relatively low
Enter accommodating chamber SC；The compressed container room that the pressure being compressed closed increases；And
It is complete the center being exhausted of compression via outlet 166 and discharge valve assembly 192
Altitude chamber.Suck accommodating chamber SC to be suitable to connect with suction window SW such that it is able to receive from suction
Enter the pressure working fluid that window SW sucks.
Screw compressor 100 can also include being mainly used in each relative movement part to compressor
(such as compression mechanism CM, base bearing 182, cam pin 139, unloading lining 190 and driving
Bearing) lubricating system lubricated is provided.Lubricating system can Bao Shi: oil sump as mentioned above
OR (main lubricant source)；It is arranged on and is positioned at the center of drive shaft bottom including in drive shaft 134
Hole 135 and be positioned at the oil supply gallery of eccentric orfice 136 on drive shaft top；Lubrication cam pin 139,
Lubrication cam pin 139, unloading lining 190, driving bearing and/or base bearing 182 is stored for interim
Lubricant reservoir district (the secondary lubricant of temporal persistence lubricant in main bearing seat 180 afterwards
Source)；From such as lubricant reservoir district to the compression mechanism fuel feeding of compression mechanism CM supply lubricant
Device CO (still may refer to Fig. 2 and Fig. 5 not shown in Fig. 1)；And make lubricant from example
As lubricant reservoir district is back to the drainback passage of oil sump OR.It should be mentioned here that oil sump
OR and/or lubricant reservoir district are used as the lubricant source according to the present invention.
In some instances, lubricant reservoir district can include being positioned at cam pin 193, unloading lining
190 and/or the top end face of driving bearing and dynamic vortex substrate 152 lower surface between and be positioned at
Lubricant reservoir district OA in hub portion 156.
When screw compressor 100 operates, electro-motor 132 is energized and makes rotor 138 and drive
Axle 134 rotates integratedly.At this moment, the cam pin 139 such as formed with drive shaft 134
Also rotate, thus the such as drive hub portion 156 via unloading lining 190 and/or driving bearing, by
This makes scroll element 150 enter relative to determining scroll element 160 by such as cross slip-ring 199
Row translation rotation i.e. moving (that is, the axis of dynamic scroll element 150 is relative to determining scroll element 160
Axis revolution, but dynamic scroll element 150 and determine both scroll elements 160 itself not around it
Respective axis rotate).Meanwhile, permissible from the pressure working fluid sucking accessory 194 suction
Along main bearing seat passage PG through main bearing seat 180 then via sucking window SW entrance pressure
(specially enter and suck in accommodating chamber SC) in contracting mechanism CM.
Thus, by determine each accommodating chamber that scrollwork 164 and dynamic scrollwork 154 limit from radial outside to
Radially inner side becomes compressed container room from untight suction accommodating chamber SC during moving and becomes
Centered by altitude chamber (there is maximum pressure), and volume is the most from large to small.So, accommodate
Pressure in room also gradually rises, thus working fluid is compressed and finally discharges from outlet 166
It is expelled to outside compressor to higher-pressure region HR and then via discharging accessory (not shown).
Meanwhile, such as under the effect of the centrifugal force produced in the rotation because of drive shaft 134, profit
Lubrication prescription can be from oil sump OR via oil supply gallery (specially centre bore 135 and eccentric orfice 136)
And it is delivered to lubricant reservoir district (such as lubricant reservoir district OA).Then, by compression mechanism
Fueller CO, the part being stored temporarily in the lubricant in lubricant reservoir district OA is supplied
Give to compression mechanism CM (being such as supplied to suck the appropriate area of accommodating chamber SC), in order to
Compression mechanism CM provide lubrication.Then, remaining in lubricant reservoir district OA it is stored temporarily in
Lubricant is back to oil sump OR by drainback passage.
The compression mechanism fuel feeding of the lubricating system according to correlation technique is described referring to Fig. 6 to Fig. 8
(Fig. 6 is the signal of the exemplary parameter scope illustrating exemplary refrigeration system for the situation of device CO'
Figure, Fig. 7 are the screw compressor illustrating and applying the compression mechanism fueller according to correlation technique
The longitudinal section of a part and Fig. 8 is to illustrate that the compression mechanism applied according to correlation technique supplies
The sectional elevation of the compression mechanism of oil device).
Referring specifically to Fig. 7, include according to the compression mechanism fueller CO' of correlation technique: with profit
The ingate 201' of lubrication prescription storage area OA connection；Connect with the appropriate area sucking accommodating chamber SC
Outlet opening 203'；And the cross-drilled hole 205' connected with ingate 201' and outlet opening 203'.
Ingate 201', outlet opening 203' and cross-drilled hole 205' can be formed in dynamic vortex substrate 152.?
Opening position in some examples, at the upper surface being opened on dynamic vortex substrate 152 of outlet opening 203'
Put and be configured such that: outlet opening 203' can be the inner side of the radially inner side being positioned at dynamic scrollwork 154
The outside of the radial outside sucking accommodating chamber SC and be positioned at dynamic scrollwork 154 sucks accommodating chamber and supplies
Oil, and, it is possible to avoid the opening of outlet opening 203' in the moving cycle of dynamic scroll element 150
It is in compressed container room it is thus possible to avoid the lubricant compressed in mechanism fueller CO' to exist
It is back to lubricant reservoir district OA under the effect of the elevated pressures in compressed container room.
So, when screw compressor operates, owing to the pressure of lubricant reservoir district OA is higher than inhaling
Enter the pressure (corresponding to suction pressure) of accommodating chamber SC, and hold owing to sucking in the charging stage
The volume of room SC received can be gradually increased and pressure is reduced further, and therefore lubricant can be suitable
Freely it is delivered to compress mechanism CM.
It addition, with reference to Fig. 6, it can be seen that such as relate to freeze applications and use variable speed compressor
The range of speeds of exemplary refrigeration system, condensation temperature scope and evaporating temperature scope.It addition, root
According to research and the experiment of inventor, when evaporating temperature is in the scope of-40 °F to 0 °F, it is possible to
Such as guarantee scrollwork end formed expectation oil film oil recycle ratio (OCR) be 0.05% to
1%, and when evaporating temperature is in the scope of 0 °F to 45 °F, it is possible to such as guarantee at scrollwork
It is 0.05% to 2% that end forms the oil recycle ratio (OCR) of expectation oil film.In a certain experiment
In, R404A cold-producing medium can be used and to compress mechanism's discharge capacity be 23CC.
It addition, with reference to table 1, it can be seen that it is being not provided with for the active to compression mechanism fuel feeding
In the case of oil injection mechanism, when system mesoscale eddies compressor with 2400RPM low-speed running and is
System evaporating temperature/condensation temperature is when being set as-40/130 °F, and oil recycle ratio is 0.03% to be less than the phase
Hope range lower limit that is 0.05%.
It addition, with reference to table 1, it can be seen that according to correlation technique, especially when system mesoscale eddies pressure
Contracting machine is set as-40/130 with 2400RPM low-speed running and system evaporating temperature/condensation temperature
°F or when-20/90 °F, oil recycle ratio is all far above the expected range upper limit that is 1%, the most right
A, B and C these three size is adjusted.Especially, even if being all set in A and B size
In the case of only 1.0mm, under low evaporating temperature/slow-speed of revolution, each oil recycle ratio is the most remote high
In the expected range upper limit.Here, it should be understood that, it is intended to reduce the less (ratio of internal diameter of oil recycle ratio
Such as less than 1.0mm) duct be unmanageable and be the most impossible.
Table 1
It follows that be difficult to compress in difference according to the compression mechanism fueller CO' of correlation technique
Under machine rotating speed and/or different system operating parameters, oil recycle ratio is all in proper range.Special
Not, under low evaporating temperature/slow-speed of revolution oil recycle ratio far beyond the expected range upper limit.So,
For example, too high oil recycle ratio can cause lubricant accumulation around discharge valve assembly 192
And be that screw compressor brings some problem.
The pressure of the lubricating system according to first embodiment of the invention is described referring to Fig. 2 to Fig. 4
(Fig. 2 is combined with according to the present invention the first embodiment party the situation of contracting mechanism fueller CO for illustrating
The longitudinal section of dynamic scroll element of compression mechanism fueller of formula, Fig. 3 are combined with root for illustrating
According to first embodiment of the invention compression mechanism fueller compression mechanism sectional elevation and
Fig. 4 is the vortex illustrating and being combined with the compression mechanism fueller according to first embodiment of the invention
The axonometric chart of a part for compressor).
Referring specifically to Fig. 2, according to the compression mechanism fueller CO of first embodiment of the invention
May include that the ingate 201 connected with lubricant reservoir district OA；And with ingate 201
The cross-drilled hole 205 of connection.Ingate 201 and cross-drilled hole 205 can be formed in dynamic vortex substrate 152.
In some instances, ingate 201 is the most axially extending hole.However, it is possible to structure
Thinking, ingate 201 can also be the inclined hole tilted relative to axial direction.In some instances,
Cross-drilled hole 205 is the lateral aperture extended along compressor radial direction.However, it is possible to conception, cross-drilled hole 205
Can also be for the inclined hole tilted relative to radial direction (horizontal direction).It should be mentioned here that
Ingate 201 and cross-drilled hole 205 constitute the fuel feeding duct according to the present invention.
Cross-drilled hole 205 can be the hole that internal diameter is consistent, and is opened on the periphery of dynamic vortex substrate 152
Surface 152a.In some instances, the internal diameter of cross-drilled hole 205 can be 3.3mm.
In preferred example, the aperture position (stream being opened on outer surface 152a of cross-drilled hole 205
Go out aperture position) it is set in the flow path of sucked pressure working fluid.Especially
Ground, aperture position is in suction accessory 194 and sucks between window SW.
In some instances, as it is shown on figure 3, aperture position is positioned at suction in compressor circumferential direction
Enter accessory 194 and (specially suck being opened at the inner circumferential wall of enclosure body 112 of accessory 194
Opening) and suck between window SW, and/or, as shown in Figure 4, aperture position exists
Sucking accessory 194 and sucking between window SW on axial direction.
In some instances, in circumferential direction, aperture position is little with the distance sucking accessory 194
In the distance with suction window SW, and/or, in the axial direction, aperture position and suction
Enter the distance of accessory 194 more than the distance with suction window SW.
Generally, along working-fluid flow path, aperture position and the distance sucking accessory 194
Can be less than the distance with suction window SW.By this set, it is advantageously implemented on-demand band oil
Fuel feeding target and concept.
In some instances, in circumferential direction, aperture position close to or be aligned in suction accessory
194。
In some instances, the aperture position of cross-drilled hole 205 be positioned at by suck accessory 194 opening with
Suck on the connecting line that window SW is connected.
In the example shown in the series of figures, suck accessory 194 be arranged in the axial direction substantially with base bearing
The position that seat 180 aligns.In preferred example, suck accessory 194 and be arranged to and main shaft
Bearing passage PG aligns.By the introducing of this set, beneficially pressure working fluid, and
And be conducive to the lubricant making driven vortex substrate 152 discharge low with suck from suction accessory 194
Pressure working fluid meets, thus is advantageously implemented suitable oil recycle ratio.However, it is possible to conception,
Suck accessory 194 and can also be arranged in (the most so-called bottom, other position in the axial direction
Air inlet designs).
The compression mechanism of the lubricating system according to second embodiment of the invention is described referring to Fig. 5
(Fig. 5 is to illustrate to be combined with the pressure according to second embodiment of the invention to the situation of fueller CO
The longitudinal section of the dynamic scroll element of contracting mechanism fueller).
With reference to Fig. 5, according to compression mechanism fueller CO and the root of second embodiment of the invention
The differring primarily in that of compression mechanism fueller CO according to first embodiment of the invention: cross-drilled hole
205 can include the counterbore 205a being positioned at radial outside section, and the internal diameter of counterbore 205a
Can (such as, the internal diameter of counterbore 205a can be more than the internal diameter of remaining section of cross-drilled hole 205
5mm).In some instances, additionally, according to the compression mechanism of second embodiment of the invention
The district of fueller CO and the compression mechanism fueller CO according to first embodiment of the invention
Do not also reside in: also include the outlet opening 203 (axle connected with the appropriate area sucking accommodating chamber SC
To hole or inclined hole).
The compressor of the lubricating system of the modified example according to second embodiment of the invention is described below
The situation of structure fueller CO.In this variant, plug 207 it is provided with.Plug 207 is fitted
In being connected to counterbore 205a (being such as threaded connection).Plug 207 can be provided with logical
Hole 207a, and through hole 207a can have suitable internal diameter.In some instances, through hole 207a
Internal diameter can be less than the internal diameter of remaining section of cross-drilled hole 205.In other example, through hole 207a
Internal diameter can equal to or the internal diameter of even greater than remaining section of cross-drilled hole 205.
Thus, according to the compression mechanism fueller of the present invention, during screw compressor operates,
When the lubricant from lubricant reservoir district OA discharges dynamic vortex substrate from the opening of cross-drilled hole 205
When 152, make discharged lubricant on one's own initiative and the pressure working fluid sucked meet so that
A part of lubricant can be brought in compression mechanism CM by pressure working fluid.So, it is achieved that
The fuel feeding target of on-demand band oil (that is, take how many away at least more than so-called needs) and concept.
Specifically, on the one hand, such as slow-speed of revolution operating mode, be not provided with for compression
The scheme of the active oil injection mechanism of mechanism's fuel feeding is compared, and can increase oil recycle ratio and make it be in the phase
In the range of prestige.On the other hand, such as high speed conditions, also will not exceedingly increase oil
Cycling rate (the most only can slightly increase oil recycle ratio) and make it be maintained at expected range
In (such as, this is due to the driven whirlpool when compressing the every moving of mechanism one and enclosing of lubricant at high speed
The lubricant quality that rotation substrate is discharged diminishes relatively).Thus, it is possible to different compressors rotating speed and/
Or under different system operating parameters, make oil recycle ratio all be in proper range.Especially, permissible
It is effectively prevented under low evaporating temperature/slow-speed of revolution oil recycle ratio far beyond the expected range upper limit
Situation.It can thus be avoided too high oil recycle ratio causes lubricant accumulation at discharge valve assembly
It is around that screw compressor brings stability and integrity problem.
Meanwhile, remaining lubricant that driven vortex substrate 152 is discharged will fall downwards to oil sump
OR, and can also effectively lubricate the need of such as cross slip-ring 199 etc in this process
Parts to be lubricated.
It addition, according to the compression mechanism fueller of second embodiment of the invention and modified example thereof:
By arranging counterbore, can aid in and reduce the speed of the dynamic vortex substrate of lubricant discharge and help
In the vaporific injection improving lubricant；By being additionally provided in outlet opening, it is allowed to lubricant is the most defeated
Deliver to suck accommodating chamber SC i.e. compress mechanism CM thus properly increase oil recycle ratio；And, logical
Cross and the plug with through hole is set alternatively, the degree of freedom of the regulation of oil recycle ratio can be improved.
In a word, according to the compression mechanism fueller of second embodiment of the invention and modified example thereof,
By setting, there is the counterbore of more large diameter, by arranging outlet opening and/or by arranging
The internal diameter with through hole and through hole can be less plug, oil recycle ratio can be improved fully
The precision of regulation and design freedom, so that compression mechanism fueller has more excellent leading to
With property and the suitability.
Referring again to table 1, it can be seen that for the compressor according to second embodiment of the invention
Structure fueller, whether under low evaporating temperature/slow-speed of revolution or at high evaporating temperature/high rotating speed
Under, each oil recycle ratio is all in expected range.It addition, in this second embodiment, from going out
The lubricant the most little (especially in the case of being not provided with plug 207) that oral pore 203 is discharged,
Therefore, the experimental result of the substantially oil recycle ratio in table 1 is also applied for the first embodiment.
Compression mechanism fueller according to the present invention is particularly suited for use in variable speed compressor, especially
It is applied in the variable speed compressor of refrigeration system.But, according to the compression that the versatility of the present invention is good
Mechanism's fueller is readily adaptable for use in a series of constant speed compressors with different rotating speeds.
Compression mechanism fueller according to the present invention can allow multiple different modification.
Air-breathing window can be two or more, and/or, the outflow opening in fuel feeding duct can
Think two or more.It addition, air-breathing window can also be determined by with as described above being arranged at
The mode that the mode of the annular outer wall 164a of scrollwork 164 is different is formed.
The fuel feeding duct of compression mechanism fueller CO can be formed in other ways.Such as, supply
Oilhole road is formed in the perisporium of main bearing seat and is opened on the outer weekly form of the perisporium of main bearing seat
Face, now, lubricant reservoir district (lubricant source) can include main bearing seat for accommodating example
Recess such as hub portion 150.The most such as, fuel feeding duct is embodied as directly extending to suction from oil sump and joins
The oil pipe of the position between part and suction window.
In a word, according in the screw compressor of the present invention, following advantageous scheme can be included.
According in the screw compressor of the present invention, described outflow opening is positioned at from described suction accessory
Opening extends on the working-fluid flow path of described suction window.
According in the screw compressor of the present invention, along described working-fluid flow path, described stream
Go out the opening distance with the opening of described suction accessory less than the distance with described suction window.
According in the screw compressor of the present invention, described dynamic scroll element includes dynamic vortex substrate, and
And described fuel feeding duct is formed in described dynamic vortex substrate.
According in the screw compressor of the present invention, described outflow opening open is in described dynamic vortex substrate
Outer surface.
According in the screw compressor of the present invention, described lubricant source includes lubricant reservoir district,
Described lubricant reservoir district be positioned at the cam pin of described drive shaft end and near, Yi Jisuo
State ingate that fuel feeding duct includes connecting with described lubricant reservoir district and with described ingate
The cross-drilled hole with described outflow opening of connection.
According in the screw compressor of the present invention, described cross-drilled hole includes being positioned at radial outside section
Counterbore, and the internal diameter of described counterbore is more than the internal diameter of remaining section of described cross-drilled hole.
According in the screw compressor of the present invention, described compression mechanism fueller also includes plug,
Described plug is adapted to be coupled to described counterbore, and is provided with through hole in described plug.
According in the screw compressor of the present invention, the internal diameter of described through hole is less than remaining of described cross-drilled hole
The internal diameter of section.
According in the screw compressor of the present invention, described compression mechanism fueller also includes with described
Compression mechanism sucks accommodating chamber connection and the outlet opening connected with described cross-drilled hole.
According in the screw compressor of the present invention, described lubricating system also include being arranged on described in drive
Oil supply gallery in moving axis, described lubricant source also includes that the inside being positioned at described screw compressor holds
The long-pending oil sump at bottom, and lubricant can flow from described oil sump via described oil supply gallery
To described lubricant reservoir district.
According in the screw compressor of the present invention, described determine scroll element and include annular outer wall, and
Described suction window is arranged in described annular outer wall.
According in the screw compressor of the present invention, described screw compressor also includes main bearing seat, institute
State main bearing seat support a part for described drive shaft and support described dynamic scroll element, Yi Jisuo
State suction accessory and be arranged in substantially relative with described main bearing seat on screw compressor axial direction
Neat position.
According in the screw compressor of the present invention, described main bearing seat has multiple being circumferentially spaced
Radial direction teat, described main bearing seat is fixedly connected to described scroll compression by described radial direction teat
The inner circumferential wall of the enclosure body of contracting machine so that between described main bearing seat and described inner circumferential wall
It is formed with multiple main bearing seat passage, and described suction accessory is arranged to lead to described main bearing seat
Road aligns.
According in the screw compressor of the present invention, described screw compressor also includes main bearing seat, institute
State main bearing seat support a part for described drive shaft and support described dynamic scroll element, Yi Jisuo
State fuel feeding duct be formed in the perisporium of described main bearing seat and be opened on described main bearing seat
The outer surface of perisporium.
According in the screw compressor of the present invention, described screw compressor is for being suitably employed in refrigeration system
In variable speed compressor.
In present specification, directional terminology " is pushed up ", " end ", "up" and "down" etc. use only
Merely for being easy to the purpose that describes, and it is not construed as restrictive.
Although with reference to illustrative embodiments, invention has been described, but it is to be understood that
The invention is not limited in the detailed description of the invention describing in detail in literary composition and illustrating, wanting without departing from right
In the case of seeking book limited range, illustrative embodiments can be made by those skilled in the art
Various changes.
Claims (16)
1. a screw compressor (100), including:
Compression mechanism (CM), described compression mechanism (CM) is suitable to compression work fluid and wraps
Include scroll element (150), determine scroll element (160) and suck window (SW), workflow
Body can flow in described compression mechanism (CM) via described suction window (SW)；
Drive mechanism (130), described drive mechanism (130) includes drive shaft (134) and fits
In driving described compression mechanism (CM)；
Sucking accessory (194), working fluid can flow into institute via described suction accessory (194)
State in screw compressor (100) and then described compression mechanism (CM) can be flowed to；And
Lubricating system, described lubricating system includes lubricant source (OA, OR) and is suitable to lubricate
Agent is from the compressor of described lubricant source (OA, OR) supply the most described compression mechanism (CM)
Structure fueller (CO),
Wherein, described compression mechanism's fueller (CO) has fuel feeding duct (201,205),
The outflow opening of described fuel feeding duct (201,205) is positioned at opening of described suction accessory (194)
Between mouth and described suction window (SW).
Screw compressor the most according to claim 1 (100), wherein, described outflow opening position
The workflow of described suction window (SW) is extended in the opening from described suction accessory (194)
On body flow path.
Screw compressor the most according to claim 2 (100), wherein, along described workflow
Body flow path, described outflow opening is less than with the distance of the opening of described suction accessory (194)
Distance with described suction window (SW).
Screw compressor the most according to claim 1 (100), wherein, described dynamic scroll portion
Part (150) includes dynamic vortex substrate (152), and described fuel feeding duct (201,205) shape
Become in described dynamic vortex substrate (152).
Screw compressor the most according to claim 4 (100), wherein, described outflow opening opens
Open in the outer surface (152a) of described dynamic vortex substrate (152).
Screw compressor the most according to claim 5 (100), wherein
Described lubricant source (OA) includes lubricant reservoir district (OA), described lubricant reservoir
District (OA) be positioned at the cam pin (139) of described drive shaft (134) end and near,
And
Described fuel feeding duct (201,205) includes connecting with described lubricant reservoir district (OA)
Ingate (201) and connect with described ingate (201) there is described outflow opening
Cross-drilled hole (205).
Screw compressor the most according to claim 6 (100), wherein, described cross-drilled hole (205)
Including the counterbore (205a) being positioned at radial outside section, and described counterbore (205a) is interior
Footpath is more than the internal diameter of remaining section of described cross-drilled hole (205).
Screw compressor the most according to claim 7 (100), wherein, described compression mechanism supplies
It is described heavy that oil device (CO) also includes that plug (207), described plug (207) are adapted to be coupled to
Hole (205a), and in described plug (207), it is provided with through hole (207a).
Screw compressor the most according to claim 8 (100), wherein, described through hole (207a)
Internal diameter less than the internal diameter of remaining section of described cross-drilled hole (205).
Screw compressor the most according to claim 7 (100), wherein, described compression mechanism
Fueller (CO) also includes and the suction accommodating chamber (SC) of described compression mechanism (CM)
Connection and the outlet opening (203) connected with described cross-drilled hole (205).
11. according to the screw compressor (100) according to any one of claim 6 to 10, wherein,
Described lubricating system also includes the oil supply gallery (135,136) being arranged in described drive shaft (134),
Described lubricant source (OA, OR) also includes that the inside being positioned at described screw compressor (100) holds
Oil sump (OR) at the bottom of long-pending (IV), and lubricant can via described oil supply gallery (135,
136) described lubricant reservoir district (OA) is flowed to from described oil sump (OR).
12. screw compressors according to any one of claim 1 to 10 (100), wherein,
Described determine scroll element (160) and include annular outer wall (164a), and described suction window (SW)
It is arranged in described annular outer wall (164a).
13. screw compressors according to any one of claim 1 to 10 (100), wherein
Described screw compressor (100) also includes main bearing seat (180), described main bearing seat (180)
Support a part for described drive shaft (134) and support described dynamic scroll element (150), with
And
Described suction accessory (194) is arranged in substantially with described on screw compressor axial direction
The position that main bearing seat (180) aligns.
14. screw compressors according to claim 13 (100), wherein
Described main bearing seat (180) has multiple radial direction teat being circumferentially spaced, described main shaft
Bearing (180) is fixedly connected to described screw compressor (100) by described radial direction teat
The inner circumferential wall of enclosure body (112) so that in described main bearing seat (180) and described inner circumferential
Multiple main bearing seat passage (PG) it is formed with between wall, and
Described suction accessory (194) is arranged to align with described main bearing seat passage (PG).
15. screw compressors according to any one of claim 1 to 3 (100), wherein
Described screw compressor (100) also includes main bearing seat (180), described main bearing seat (180)
Support a part for described drive shaft (134) and support described dynamic scroll element (150), with
And
Described fuel feeding duct is formed in the perisporium of described main bearing seat (180) and is opened on institute
State the outer surface of the perisporium of main bearing seat (180).
16. screw compressors according to any one of claim 1 to 10 (100), wherein,
Described screw compressor (100) is the variable speed compressor being suitably employed in refrigeration system.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510216987.5A CN106194750B (en) | 2015-04-30 | 2015-04-30 | Scroll compressor having a plurality of scroll members |
| KR1020177033911A KR101971819B1 (en) | 2015-04-30 | 2016-02-29 | Scroll compressor |
| US15/569,350 US10641269B2 (en) | 2015-04-30 | 2016-02-29 | Lubrication of scroll compressor |
| PCT/CN2016/074823 WO2016173319A1 (en) | 2015-04-30 | 2016-02-29 | Scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510216987.5A CN106194750B (en) | 2015-04-30 | 2015-04-30 | Scroll compressor having a plurality of scroll members |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106194750A true CN106194750A (en) | 2016-12-07 |
| CN106194750B CN106194750B (en) | 2019-02-01 |
Family
ID=57457615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510216987.5A Active CN106194750B (en) | 2015-04-30 | 2015-04-30 | Scroll compressor having a plurality of scroll members |
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| Country | Link |
|---|---|
| CN (1) | CN106194750B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109306957A (en) * | 2017-07-27 | 2019-02-05 | 艾默生环境优化技术(苏州)有限公司 | Compressor with a compressor housing having a plurality of compressor blades |
| CN113494459A (en) * | 2021-08-27 | 2021-10-12 | 广东美的环境科技有限公司 | Compression assembly and scroll compressor |
| CN113606144A (en) * | 2021-09-01 | 2021-11-05 | 松下压缩机(大连)有限公司 | Scroll compressor with active oil supply system |
| CN113833659A (en) * | 2020-06-23 | 2021-12-24 | 艾默生环境优化技术(苏州)有限公司 | Scroll compression mechanism and scroll compressor |
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| CN109306957A (en) * | 2017-07-27 | 2019-02-05 | 艾默生环境优化技术(苏州)有限公司 | Compressor with a compressor housing having a plurality of compressor blades |
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| CN113606144A (en) * | 2021-09-01 | 2021-11-05 | 松下压缩机(大连)有限公司 | Scroll compressor with active oil supply system |
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|---|---|
| CN106194750B (en) | 2019-02-01 |
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