CN108953143A - Screw compressor and air conditioner with it - Google Patents
Screw compressor and air conditioner with it Download PDFInfo
- Publication number
- CN108953143A CN108953143A CN201811069840.8A CN201811069840A CN108953143A CN 108953143 A CN108953143 A CN 108953143A CN 201811069840 A CN201811069840 A CN 201811069840A CN 108953143 A CN108953143 A CN 108953143A
- Authority
- CN
- China
- Prior art keywords
- upper bracket
- orbiter
- screw compressor
- thrust piece
- fixed scroll
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000004308 accommodation Effects 0.000 claims abstract description 17
- 230000006835 compression Effects 0.000 claims description 41
- 238000007906 compression Methods 0.000 claims description 41
- 239000011159 matrix material Substances 0.000 claims description 7
- 239000003507 refrigerant Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000007667 floating Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000001738 isopycnic centrifugation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/007—Sealings for working fluid between radially and axially moving parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/60—Shafts
- F04C2240/601—Shaft flexion
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The present invention provides a kind of screw compressor and with its air conditioner, wherein screw compressor includes: upper bracket, and upper bracket has accommodation space；Fixed scroll is arranged on upper bracket；Orbiter is arranged between upper bracket and fixed scroll and engages with fixed scroll；Thrust piece, axially movably setting along upper bracket is in accommodation space, thrust piece is between upper bracket and orbiter, first seal is provided between the end face of orbiter and the end face of thrust piece, it is provided with second seal, first seal and second seal between the outer surface and upper bracket of thrust piece, the space between the back side and upper bracket of orbiter is divided into the first back pressure cavity and the second back pressure cavity on the outside of the first back pressure cavity.Technical solution of the present invention, which efficiently solves the problems, such as that the orbiter of screw compressor in the prior art may be separated with thrust component, leads to leakage.
Description
Technical field
The present invention relates to refrigerating fields, in particular to a kind of screw compressor and with its air conditioner.
Background technique
In screw compressor, by piece eccentric crankshaft of motor driven, drive dynamic vortex operating, and with fixed scroll shape
Gas compression is realized at several compression chambers.For the leakproofness for guaranteeing compression chamber, certain pressure usually is introduced at orbiter back
Fluid, fit closely orbiter and fixed scroll.Meanwhile in order to ensure in abnormal conditions, (such as compression chamber sucks liquid
State refrigerant), scroll plate can separate in time, will not damage because bearing too big pressure, orbiter needs in the axial direction
Want certain removable space.
In the patent application application No. is 201410384217.7, propose to use thrust component Auxiliary support orbiter
Structure, which may be implemented the sealing of compression chamber, and improve reliability.However the patent design of part is complicated, is not easy to
Processing, assembly, and orbiter may separate with thrust component and cause to leak.
Further, since orbiter eccentric operating, the centrifugal force generated can be transmitted in the support construction of crankshaft (i.e. axis
Hold), need to be arranged multiple balance weights to offset the influence of orbiter centrifugal force.In existing structure, balance weight is away from dynamic vortex
Disk farther out, on the one hand will lead to crankshaft and generate bigger deformation, destroy balance, on the other hand increase the weight of balance weight
Amount.So as to cause shaft strength increase, compressor noise and vibration aggravation.
Summary of the invention
The present invention is intended to provide a kind of screw compressor and the air conditioner with it, to solve scroll compression in the prior art
The orbiter of machine may separate the problem of leading to leakage with thrust component.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of screw compressor, comprising: upper branch
Frame, upper bracket have accommodation space；Fixed scroll is arranged on upper bracket；Orbiter is arranged in upper bracket and fixed scroll
Between and engage with fixed scroll；Thrust piece, in accommodation space, thrust piece is located at the axially movably setting along upper bracket
Between upper bracket and orbiter, first seal, thrust piece are provided between the end face of orbiter and the end face of thrust piece
Outer surface and upper bracket between be provided with second seal, first seal and second seal by the back side of orbiter with
Space between upper bracket is divided into the first back pressure cavity and the second back pressure cavity on the outside of the first back pressure cavity.
Further, screw compressor further includes crankshaft and the first eccentric block, crankshaft be threaded through in upper bracket and with dynamic whirlpool
Capstan is drivingly connected, and is provided with avoiding space on upper bracket and/or thrust piece, and the first eccentric block is arranged on crankshaft and can be
It is rotated in avoiding space.
Further, the side of upper bracket towards thrust piece is provided with the first hierarchic structure to form the first relief portion, only
The side of push piece towards upper bracket is provided with the second hierarchic structure to form the second relief portion, the first relief portion and the second relief portion
Combination forms avoiding space.
Further, the first eccentric block is set on crankshaft.
Further, the second eccentric block and rotor are additionally provided on crankshaft, the second eccentric block is arranged in rotor and upper bracket
Between.
Further, third eccentric block and rotor are additionally provided on crankshaft, third eccentric block is arranged in rotor far from upper branch
The side of frame.
Further, fixed structure is provided between thrust piece and upper bracket.
Further, fixed structure includes multiple pin shafts being threaded through in thrust piece and upper bracket.
Further, upper bracket includes matrix and outer land, and outer land is along matrix circumferentially and around formation receiving
Space, sealed set between fixed scroll and outer land, second seal are arranged between outer land and thrust piece.
Further, orbiter includes end plate, and end plate is arranged between fixed scroll and thrust piece, and first seal is set
It sets between thrust piece two end faces opposite with end plate.
Further, anti-Self-rotation structure is provided between thrust piece and orbiter.
Further, thrust piece has limiting section and push stopping part, in the upper surface of limiting section and the lower end surface of fixed scroll
In the case where abutting, orbiter has with the first state of the lower end face contact of fixed scroll, connects with the upper surface of push stopping part
Second state of touching and neither with the lower end face contact of the fixed scroll not third state with the upper end face contact of push stopping part again.
Further, orbiter and fixed scroll engage to form compression chamber, are additionally provided with drainage channel in orbiter,
Drainage channel is connected to compression chamber and the second back pressure cavity.
According to another aspect of the present invention, a kind of air conditioner, including screw compressor are provided, screw compressor is above-mentioned
Screw compressor.
Apply the technical scheme of the present invention, thrust piece can floating ground be arranged in the accommodation space of upper bracket, first sealing
Part and second seal are in the back side of orbiter the first back pressure cavity of formation and the second back pressure cavity.Compression chamber and two back pressure cavities point
Pressure, the first back pressure cavity and the second back pressure cavity, which are not provided, in the two sides of orbiter provides pressure in the two sides of thrust piece respectively,
Orbiter and thrust piece can be according to compression chambers, the variation of the pressure size of the first back pressure cavity and the second back pressure cavity and difference
Float in the accommodation space of upper bracket, thus keep the leakproofness of compression chamber and adjust screw compressor under different operating conditions move
Pressure between scroll plate and fixed scroll.Meanwhile first seal is arranged on thrust piece and can be with the movement of thrust piece
And move, reduce movable amplitude of the first seal relative to orbiter, first seal is enable to be always ensured that the first back
The leakproofness for pressing chamber, the second back pressure cavity and compression chamber, prevents the case where refrigerant leaks.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 shows the schematic cross-sectional view of the embodiment of screw compressor according to the present invention；
Fig. 2 to Fig. 4 shows partial enlargement diagram of the screw compressor of Fig. 1 under three working conditions；And
Fig. 5 shows the structural schematic diagram of the crankshaft of the screw compressor of Fig. 1.
Wherein, the above drawings include the following reference numerals:
1, shell；2, stator；3, rotor；4, lower bracket；6, cross slip-ring；7, crankshaft；7a, head；8, orbiter；
8a, end plate；8c, dynamic whirlpool tooth；8d, drainage channel；9, fixed scroll；9b, quiet whirlpool tooth；10, first seal；11, the first back pressure
Chamber；12, the second back pressure cavity；13, second seal；14, thrust piece；14a, limiting section；14b, push stopping part；14e, pin hole；14f,
Boss portion；15, second seal；16, upper bracket；16a, outer land；17, pin shaft；18, the first eccentric block；19, second is eccentric
Block；20, third eccentric block.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment be it is illustrative, never as to the application and its application or making
Any restrictions.Based on the embodiment in the application, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall in the protection scope of this application.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
Up to the unlimited scope of the present application processed of formula and numerical value.Simultaneously, it should be appreciated that for ease of description, each portion shown in attached drawing
The size divided not is to draw according to actual proportionate relationship.For technology, side known to person of ordinary skill in the relevant
Method and equipment may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as authorizing explanation
A part of book.In shown here and discussion all examples, any occurrence should be construed as merely illustratively, and
Not by way of limitation.Therefore, the other examples of exemplary embodiment can have different values.It should also be noted that similar label
Similar terms are indicated in following attached drawing with letter, therefore, once it is defined in a certain Xiang Yi attached drawing, then subsequent attached
It does not need that it is further discussed in figure.
As shown in Figures 1 to 5, the screw compressor of the present embodiment includes upper bracket 16, the quiet vortex of setting within the case 1
Disk 9, orbiter 8 and thrust piece 14.Wherein, upper bracket 16 has accommodation space, and fixed scroll 9 is arranged on upper bracket 16,
Orbiter 8 is arranged between upper bracket 16 and fixed scroll 9 and engages to form compression chamber with fixed scroll 9.14 edge of thrust piece
The axially movably setting of upper bracket 16 in accommodation space, and thrust piece 14 be located at upper bracket 16 and orbiter 8 it
Between.Be provided with first seal 10 between the end face of orbiter 8 and the end face of thrust piece 14, the outer surface of thrust piece 14 with it is upper
Be provided between bracket 16 second seal 13, first seal 10 and second seal 13 by the back side of orbiter 8 with it is upper
Space between bracket 16 is divided into the first back pressure cavity 11 and the second back pressure cavity 12 positioned at 11 outside of the first back pressure cavity.
Using the technical solution of the present embodiment, thrust piece 14 can floating ground be arranged in the accommodation space of upper bracket 16,
One sealing element 10 and second seal 13 are in the back side of orbiter 8 the first back pressure cavity 11 of formation and the second back pressure cavity 12.Compression
Chamber and two back pressure cavities provide pressure, the first back pressure cavity 11 and the second back pressure cavity 12 in the two sides of orbiter 8 respectively and exist respectively
The two sides of thrust piece 14 provide pressure, and orbiter 8 and thrust piece 14 can be according to compression chamber, the first back pressure cavity 11 and the second back
The variation of the pressure size and difference of chamber 12 is pressed to float in the accommodation space of upper bracket 16, to keep the sealing of compression chamber
Property simultaneously adjusts screw compressor in the pressure under different operating conditions between orbiter 8 and fixed scroll 9.Meanwhile first seal
10 are arranged on thrust piece 14 and can move with the movement of thrust piece 14, reduce first seal 10 relative to orbiter
8 movable amplitude enables first seal 10 to be always ensured that the close of the first back pressure cavity 11, the second back pressure cavity 12 and compression chamber
Feng Xing prevents the case where refrigerant leaks.
The orbiter 8 of the screw compressor of the present embodiment includes that end plate 8a and dynamic whirlpool tooth 8c, end plate 8a are arranged in quiet whirlpool
Between capstan 9 and thrust piece 14, end plate 8a is arranged in towards the side of fixed scroll 9 in dynamic whirlpool tooth 8c, and first seal 10 is arranged
Between two end faces opposite with end plate 8a of thrust piece 14.Fixed scroll 9 includes quiet whirlpool tooth 9b, moves whirlpool tooth 8c and quiet whirlpool tooth 9b
Engagement forms the compression chamber of multiple crescent shapes, and movement of the refrigerant compliant scroll disk 8 with respect to fixed scroll 9 gradually passes through each compression
Chamber realizes pressure rise.The present embodiment is additionally provided with drainage channel 8d, drainage channel 8d connection in the end plate 8a of orbiter 8
One of compression chamber and the second back pressure cavity 12, for providing back pressure for orbiter 8.
Specifically, as shown in Figures 1 to 4, the upper bracket 16 of the screw compressor of the present embodiment includes matrix and outer land
Along matrix circumferentially and around accommodation space is formed, fixed scroll 9 and the end face of outer land 16a are supported by 16a, outer land 16a
It connects and sealed set, second seal 13 is arranged between outer land 16a and thrust piece 14.The structure is simple, easily designed life
It produces and installs.
As shown in Figures 2 to 4, the thrust piece 14 of the present embodiment has limiting section 14a, push stopping part 14b, boss portion 14f, convex
Platform portion 14f is for accommodating first seal 10.With movement of the thrust piece 14 in accommodation space, limiting section 14a can with it is quiet
Scroll plate 9 abuts or separation, in the case where the upper surface of limiting section 14a is abutted with the lower end surface of fixed scroll 9, orbiter
8 have with the first state of the lower end face contact of fixed scroll 9, with the second state of the upper end face contacts of push stopping part 14b and
Neither with the lower end face contact of the fixed scroll 9 not third state with the upper end face contact of push stopping part 14b again.
When compressor operation, orbiter 8 does translational motion around 7 axle center of crankshaft with fixed radius, thus in dynamic whirlpool
Several mutually isolated and volume consecutive variations compressions are generated between capstan 8 and the dynamic whirlpool tooth 8c and quiet whirlpool tooth 9b of fixed scroll 9
Chamber.Compression chamber will be discharged to the inner space of closed shell 1 after the refrigerant compression of sucking.Since refrigerant is pressed in compression chamber
Contracting, pressure rise, certainly will generate one makes orbiter 8 and the isolated power of fixed scroll 9.The power can make orbiter 8 separate
Fixed scroll 9, so as to cause generating leakage between each compression chamber and compressor performance being caused to decline.
In order to limit this separation, average pressure can be introduced at the back end plate 8a of orbiter 8 and be higher than pressure of inspiration(Pi)
Back pressure presses orbiter 8 on fixed scroll 9 by back pressure.In the present embodiment, the first back pressure cavity 11 and compression
Discharge gas afterwards communicates, and pressure is approximately equal to pressure at expulsion Pd；The pressure Pm of second back pressure cavity 12 is in pressure of inspiration(Pi) Ps
Between pressure at expulsion Pd.
Assuming that the separating force size that compression chamber generates is Fa, approximate ground: effect of the compression chamber to orbiter 8 can be understood
Face is the circle that area is a, and the first back pressure cavity 11 is to the circle that the acting surface of orbiter 8 is that area is b, and the second back pressure cavity 12 is to dynamic
The acting surface of scroll plate 8 is the annulus that area is c, then available:
Back pressure Fb=Pm × (a- that fluid in first back pressure cavity 11 and the second back pressure cavity 12 generates orbiter 8
b)+Pd×b；
The pressure Fc=(Pd-Pm) that fluid in first back pressure cavity 11 and the second back pressure cavity 12 generates thrust piece 14 ×
(c-b)；
Fig. 2 shows the screw compressors of the present embodiment under a certain exhaust, the relatively high operating condition of pressure of inspiration(Pi) each component by
Power and motion state.At this point, pressure at expulsion Pd higher, Fb > Fa.Orbiter 8 is closely pasted by back pressure Fb and fixed scroll 9
It is combined.Thrust piece 14 is moved upward to limiting section 14a under the action of pressure Fc and offsets with fixed scroll 9, thrust piece 14
The distance between the matrix of upper bracket 16 H is maximum (can design between 20-120 μm according to the actual situation).Preferably, this reality
Apply big 5-20 μm of thickness or so of the distance of the limiting section 14a to push stopping part 14b of example than Moving plate end plate 8a, make push stopping part 14b with
There are lesser gap h for orbiter 8.Therefore, it can be sealed very well between each compression chamber at this time, and orbiter 8 and quiet whirlpool
Pressing force between capstan 9 is smaller, only are as follows: F=Fb-Fa=Pm × (a-b)+Pd × b-Fa.
Fig. 3 show the screw compressor of the present embodiment under the relatively low operating condition of a certain exhaust, pressure of inspiration(Pi) each component by
Power and motion state.At this point, pressure at expulsion Pd is lower, suction draught head is smaller, Fb < Fa.Work of the orbiter 8 in separating force Fa
It is separated with lower and fixed scroll 9, orbiter 8 is contacted with the push stopping part 14b of thrust piece 14, and thrust piece 14 is mentioned to orbiter 8
For additional power Fc.At this point, power Fc > Fa-Fb that fluid generates thrust piece 14.
Therefore, thrust piece 14 can still move up distance H under the action of power Fc, and limiting section 14a connects with fixed scroll 9
Touching.But at this point, there are lesser gap h between fixed scroll 9 and orbiter 8.Exist centainly between each compression chamber at this time
Leakage, but since h is very small, h can be made to control the level as 5-10 μm in the case where processing conditions meets, therefore let out
Leakage is greatly lowered, and compressor performance still keeps superior performance.
Fig. 4 shows screw compressor each component stress and movement in the extremely raised situation of separating force of the present embodiment
State.Such as there are when impurity or sucking excess liq in compressor, separating force Fa can be steeply risen, at this time separating force Fa > Fb+
Fc。
Orbiter 8 separates under the action of separating force Fa with fixed scroll 9, orbiter end plate back surface 8b and thrust
The push stopping part 14b of part 14 is contacted.Since separating force is excessive, thrust piece 14 can be fallen back on upper bracket 16, limiting section 14a and quiet whirlpool
Capstan 9 separates.At this point, being generated there are biggish gap H+h between fixed scroll 9 and orbiter 8, between each compression chamber serious
Leakage, and then reduce separating force by Fa, and compression chamber is discharged in impurity, so that excessively high separating force be avoided to cause compressor zero
The damage of part.
In conjunction with Fig. 2 to Fig. 4, the screw compressor of the present embodiment realizes the flexibility to orbiter 8 by thrust piece 14
Thrust, excessive abutting pressure will not be generated by improving leakproofness again.
In other embodiments not shown in the figure, the second back pressure cavity can be connected to air-breathing, be substantially equal to its pressure
Pressure of inspiration(Pi) Ps.
Fixed structure is provided between the thrust piece 14 and upper bracket 16 of the present embodiment, fixed structure is for preventing thrust piece
14 and upper bracket 16 relatively move.Specifically, as shown in Figures 2 to 4, fixed structure includes multiple being threaded through thrust piece 14
With the pin shaft 17 in upper bracket 16, a part insertion upper bracket 16 of pin shaft 17, another part is inserted into the pin hole of thrust piece 14
14e.Pin shaft 17 make thrust piece 14 can only along the axial floating of upper bracket 16, without mobile relative to upper bracket 16 or rotate, with
Guarantee sealing effect.
In other embodiments not shown in the figure, pin shaft could alternatively be bond structure or be limited using other structures form
Prevent push piece activity.
Anti- Self-rotation structure is provided between the thrust piece 14 and orbiter 8 of the present embodiment to limit the fortune of orbiter 8
Flowing mode.Specifically, the anti-Self-rotation structure of the present embodiment is cross slip-ring 6.
As shown in figure 5, the screw compressor of the present embodiment further includes lower bracket 4 and electric machine structure, lower bracket 4 is for fixing
Crankshaft 7, electric machine structure include stator 2 and rotor 3, and crankshaft 7 is threaded through in rotor 3, and the head 7a and orbiter 8 of crankshaft 7 drive
Dynamic connection, crankshaft 7 drives orbiter 8 mobile relative to fixed scroll 9 under the drive of rotor 3, realizes compression.
Eccentric axis due to orbiter 8 relative to crankshaft 7 is arranged, and the head 7a of crankshaft 7 is also eccentric therewith.Such as Fig. 5
Shown, when crankshaft 7 rotates, orbiter 8 and head 7a will generate centrifugal force FIt is dynamicWith centrifugal moment FIt is dynamic×L.It should be from for balance
Mental and physical efforts FIt is dynamicWith centrifugal moment FIt is dynamic× L, is provided with avoiding space on the upper bracket 16 and thrust piece 14 of the present embodiment, on crankshaft 7 also
It is provided with the first eccentric block 18, the first eccentric block 18 can rotate in avoiding space.Common scheme is in crankshaft in industry
Middle part or crankshaft far from orbiter one end be arranged eccentric block, due to distance farther out, the eccentric block of common scheme also can
Additional torque is generated, biggish load is applied with to crankshaft, is easy to produce deformation.Compared with common scheme, the first eccentric block
18 can directly balance a part of centrifugal force F0, and the present embodiment shortens the distance of the first eccentric block 18 and orbiter 8,
The larger problem of torque, is more advantageous to guarantee scroll compression on crankshaft caused by avoiding eccentric block and orbiter distance farther out
The stability of machine.
Specifically, as shown in Fig. 2, the side of the upper bracket 16 towards thrust piece 14 of the present embodiment is provided with the first ladder knot
For structure to form the first relief portion, the side of thrust piece 14 towards upper bracket 16 is provided with the second hierarchic structure to form the second evacuation
Portion, the first relief portion and the second relief portion combine to form avoiding space.
Preferably, first eccentric block 18 of the present embodiment is set on crankshaft 7 and is interference fitted with crankshaft 7.
To further increase counterbalance effect, it is additionally provided with the second eccentric block 19 on the crankshaft 7 of the present embodiment and third is eccentric
Block 20, the second eccentric block 19 are arranged between rotor 3 and upper bracket 16 and being capable of equilibrium centrifugation power F1, the setting of third eccentric block 20
In side of the rotor 3 far from upper bracket 16 and being capable of equilibrium centrifugation power F2, the centrifugal force of multiple eccentric block balance crankshafts makes crankshaft
Stress more evenly, reduce load, noise when advantageously reducing operating and shake and simultaneously reduce its deformation quantity.
Present invention also provides a kind of air conditioners, include scroll compression according to the air conditioner (not shown) of the present embodiment
Machine, screw compressor are the screw compressor comprising above-mentioned all or part of technical pattern.The air conditioner of the present embodiment has pressure
Contracting machine is stable, antileakaging advantage, and then the air conditioner of the present embodiment has long excellent of long service life, maintenance cycle
Point.
It can be seen from the above description that the above embodiments of the present invention realized the following chievements:
Thrust piece can floating ground be arranged in the accommodation space of upper bracket, first seal and second seal are in dynamic vortex
The back side of disk forms the first back pressure cavity and the second back pressure cavity.Compression chamber and two back pressure cavities are provided in the two sides of orbiter respectively
Pressure, the first back pressure cavity and the second back pressure cavity provide pressure in the two sides of thrust piece respectively, and orbiter and thrust piece being capable of roots
It is floated in the accommodation space of upper bracket according to the variation of compression chamber, the pressure size of the first back pressure cavity and the second back pressure cavity and difference
It is dynamic, to keep the leakproofness of compression chamber and adjust screw compressor under different operating conditions between orbiter and fixed scroll
Pressure.Meanwhile first seal is arranged on thrust piece and can move with the movement of thrust piece, reduces first seal phase
For the movable amplitude of orbiter, first seal is enable to be always ensured that the first back pressure cavity, the second back pressure cavity and compression
The leakproofness of chamber, prevents the case where refrigerant leaks.
In the description of the present application, it is to be understood that the noun of locality such as " front, rear, top, and bottom, left and right ", " laterally, vertical,
Vertically, orientation or positional relationship indicated by level " and " top, bottom " etc. is normally based on orientation or position shown in the drawings and closes
System is merely for convenience of description the application and simplifies description, and in the absence of explanation to the contrary, these nouns of locality do not indicate that
It must have a particular orientation or be constructed and operated in a specific orientation with the device or element for implying signified, therefore cannot manage
Solution is the limitation to the application protection scope；The noun of locality " inside and outside " refers to inside and outside the profile relative to each component itself.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
In addition, it should be noted that, limiting components using the words such as " first ", " second ", it is only for be convenient for
Corresponding components are distinguished, do not have Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore should not be understood as to this
Apply for the limitation of protection scope.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (14)
1. a kind of screw compressor characterized by comprising
Upper bracket (16), the upper bracket (16) have accommodation space；
Fixed scroll (9) is arranged on the upper bracket (16)；
Orbiter (8), be arranged between the upper bracket (16) and the fixed scroll (9) and with the fixed scroll (9)
Engagement；
Thrust piece (14), the axially movably setting along the upper bracket (16) is in the accommodation space, the thrust piece
(14) between the upper bracket (16) and the orbiter (8), the end face of the orbiter (8) and the thrust piece
(14) it is provided between end face first seal (10), between the outer surface and the upper bracket (16) of the thrust piece (14)
It is provided with second seal (13), the first seal (10) and the second seal (13) are by the orbiter (8)
The back side and the upper bracket (16) between space be divided into the first back pressure cavity (11) and be located at first back pressure cavity (11)
Second back pressure cavity (12) in outside.
2. screw compressor according to claim 1, which is characterized in that the screw compressor further includes crankshaft and first
Eccentric block, the crankshaft are threaded through in the upper bracket (16) and are drivingly connected with the orbiter (8), the upper bracket
(16) and/or on the thrust piece (14) it is provided with avoiding space, first eccentric block is arranged on the crankshaft and can
It is rotated in the avoiding space.
3. screw compressor according to claim 2, which is characterized in that the upper bracket (16) is towards the thrust piece
(14) side is provided with the first hierarchic structure to form the first relief portion, and the thrust piece (14) is towards the upper bracket (16)
Side be provided with the second hierarchic structure to form the second relief portion, first relief portion and second relief portion combine shape
At the avoiding space.
4. screw compressor according to claim 2, which is characterized in that first eccentric block is set in the crankshaft
On.
5. screw compressor according to claim 2, which is characterized in that be additionally provided on the crankshaft the second eccentric block and
Rotor, second eccentric block are arranged between the rotor and the upper bracket.
6. screw compressor according to claim 2, which is characterized in that be additionally provided on the crankshaft third eccentric block and
Side of the rotor far from the upper bracket is arranged in rotor, the third eccentric block.
7. screw compressor according to claim 1, which is characterized in that the thrust piece (14) and the upper bracket (16)
Between be provided with fixed structure.
8. screw compressor according to claim 7, which is characterized in that the fixed structure includes described in multiple be threaded through
Pin shaft in thrust piece (14) and the upper bracket (16).
9. screw compressor according to claim 1, which is characterized in that the upper bracket (16) includes matrix and outer land
(16a), the outer land (16a) is along described matrix circumferentially and around forming the accommodation space, the fixed scroll
(9) sealed set between the outer land (16a), the second seal (13) are arranged in the outer land (16a) and institute
It states between thrust piece (14).
10. screw compressor according to claim 1, which is characterized in that the orbiter (8) includes end plate (8a),
The end plate (8a) is arranged between the fixed scroll (9) and the thrust piece (14), first seal (10) setting
Between two opposite end faces of the thrust piece (14) and the end plate (8a).
11. screw compressor according to claim 1, which is characterized in that the thrust piece (14) and the orbiter
(8) anti-Self-rotation structure is provided between.
12. screw compressor according to claim 1, which is characterized in that the thrust piece (14) has limiting section (14a)
With push stopping part (14b), in the case where the upper surface of the limiting section (14a) is abutted with the lower end surface of the fixed scroll (9),
The orbiter (8) has and the first state of the lower end face contact of the fixed scroll (9) and the push stopping part (14b)
Upper end face contact the second state and neither with the lower end face contact of the fixed scroll (9) again not with the push stopping part
The third state of the upper end face contact of (14b).
13. screw compressor according to claim 1, which is characterized in that the orbiter (8) and the fixed scroll
(9) engagement forms compression chamber, and drainage channel is additionally provided in the orbiter (8), and the drainage channel is connected to the compression
Chamber and second back pressure cavity (12).
14. a kind of air conditioner, including screw compressor, which is characterized in that the screw compressor is to appoint in claim 1 to 13
Screw compressor described in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811069840.8A CN108953143B (en) | 2018-09-13 | 2018-09-13 | Scroll compressor and air conditioner with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811069840.8A CN108953143B (en) | 2018-09-13 | 2018-09-13 | Scroll compressor and air conditioner with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108953143A true CN108953143A (en) | 2018-12-07 |
| CN108953143B CN108953143B (en) | 2024-01-30 |
Family
ID=64475410
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811069840.8A Active CN108953143B (en) | 2018-09-13 | 2018-09-13 | Scroll compressor and air conditioner with same |
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|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112524023A (en) * | 2020-12-18 | 2021-03-19 | 广东金霸智能科技股份有限公司 | Scroll compressor |
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|---|---|---|---|---|
| CN1865705A (en) * | 2005-05-20 | 2006-11-22 | 富士通将军股份有限公司 | Scroll compressor |
| JP2009024664A (en) * | 2007-07-23 | 2009-02-05 | Sanden Corp | Scroll fluid machine |
| JP2009024663A (en) * | 2007-07-23 | 2009-02-05 | Sanden Corp | Scroll fluid machine |
| CN105332911A (en) * | 2014-08-06 | 2016-02-17 | 珠海格力节能环保制冷技术研究中心有限公司 | Scroll compressor |
| CN208749539U (en) * | 2018-09-13 | 2019-04-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Screw compressor and air conditioner with it |
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2018
- 2018-09-13 CN CN201811069840.8A patent/CN108953143B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1865705A (en) * | 2005-05-20 | 2006-11-22 | 富士通将军股份有限公司 | Scroll compressor |
| JP2009024664A (en) * | 2007-07-23 | 2009-02-05 | Sanden Corp | Scroll fluid machine |
| JP2009024663A (en) * | 2007-07-23 | 2009-02-05 | Sanden Corp | Scroll fluid machine |
| CN105332911A (en) * | 2014-08-06 | 2016-02-17 | 珠海格力节能环保制冷技术研究中心有限公司 | Scroll compressor |
| CN208749539U (en) * | 2018-09-13 | 2019-04-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Screw compressor and air conditioner with it |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112524023A (en) * | 2020-12-18 | 2021-03-19 | 广东金霸智能科技股份有限公司 | Scroll compressor |
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| Publication number | Publication date |
|---|---|
| CN108953143B (en) | 2024-01-30 |
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