CN106151029A - Scroll compressor and drive shaft and unload bushing for scroll compressor - Google Patents
Scroll compressor and drive shaft and unload bushing for scroll compressor Download PDFInfo
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- CN106151029A CN106151029A CN201510196948.3A CN201510196948A CN106151029A CN 106151029 A CN106151029 A CN 106151029A CN 201510196948 A CN201510196948 A CN 201510196948A CN 106151029 A CN106151029 A CN 106151029A
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- crank pin
- eccentric crank
- screw compressor
- wearing layer
- drive shaft
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Abstract
The present invention relates to a scroll compressor including a compression mechanism configured to compress a working fluid and a drive shaft configured to drive the compression mechanism. The drive shaft includes an eccentric crank pin with an unload bushing disposed between the compression mechanism and the eccentric crank pin such that the eccentric crank pin drives the compression mechanism via the unload bushing to achieve radial flexibility of the compression mechanism. The eccentric crank pin includes an eccentric crank pin engaging portion in contact with and relatively displaced from the unload liner, and the unload liner includes an unload liner engaging portion in contact with and relatively displaced from the eccentric crank pin. At least a portion of at least one of the eccentric crank pin mating portion and the unload liner mating portion is provided with a wear layer. The invention also relates to an unloading bushing provided with a wear layer and a drive shaft with an eccentric crank pin provided with a wear layer for a scroll compressor.
Description
Technical field
The present invention relates to a kind of screw compressor and for the drive shaft of screw compressor and unloading
Lining.
Background technology
The content of this part provide only the background information relevant to the disclosure, and it may be not intended that
Prior art.
Screw compressor be generally of include determining scroll element and dynamic scroll element to working fluid
The compression mechanism that (such as, cold-producing medium) is compressed.This compression mechanism is by the eccentric song of drive shaft
Handle pin drives.It is provided with unloading lining between eccentric crank pin and compression mechanism.Unloading lining
Be arranged to can be driven by eccentric crank pin and can relative to eccentric crank pin generation relative displacement,
Thus can realize the radial compliance determining between the blade of scroll element and dynamic scroll element.
But, the relative movement between unloading lining and eccentric crank pin makes their contact surface meeting
It is quickly worn, thus have impact on the performance of compressor radial compliance and shorten unloading lining with inclined
The service life of heart crank-pin.
Accordingly, it would be desirable to a kind of wear-resisting unloading lining in screw compressor and eccentric mechanism
Pin.
Summary of the invention
It is an object of the present invention to provide one and there is wear-resisting unloading lining and/or eccentric mechanism
The screw compressor of pin.
The screw compressor of offer length in a kind of service life is provided.
A kind of wear-resisting unloading lining of offer is provided.
A kind of driving with wear-resisting eccentric crank pin of offer is provided
Axle.
According to an aspect of the invention, it is provided a kind of screw compressor, including: it is right to be configured to
What working fluid was compressed compresses mechanism and is constructed to be permeable to drive the drive shaft of compression mechanism.Drive
Moving axis includes eccentric crank pin, is provided with unloading lining, makes between compression mechanism and eccentric crank pin
Obtaining eccentric crank pin drives compression mechanism to realize compressing the radial compliance of mechanism via unloading lining.Partially
Heart crank-pin includes contacting and the eccentric crank pin auxiliary section of relative displacement with unloading lining, unloads lining
Including the unloading lining auxiliary section with eccentric mechanism pin contacts relative displacement.Eccentric crank pin auxiliary section
With unloading lining auxiliary section at least one at least some of on be provided with wearing layer.
In above-mentioned screw compressor, owing to arranging on the auxiliary section of eccentric crank pin or unloading lining
There is wearing layer, therefore improve eccentric crank pin or the wearability of unloading lining, extend eccentric bent
Handle pin or the service life of unloading lining.As a result of which it is, have this eccentric crank pin and unloading lining
Service life of screw compressor extended.
Preferably, eccentric crank pin includes being parallel to the drive surface that the rotation axis of drive shaft extends, partially
Heart crank-pin auxiliary section includes at least some of of drive surface.
Preferably, at least it is provided with on the approximate centre being positioned at drive surface and outwardly part
Wearing layer.
Preferably, unloading lining may be configured to accommodate the hole of eccentric crank pin, and hole has with eccentric
The driven surface that the drive surface of crank-pin coordinates, unloading lining auxiliary section includes at least of driven surface
Point.
Preferably, at least in the part of the substantial middle of driven surface, it is provided with wearing layer.
Preferably, wearing layer is case hardness hardened layer in the range of 1500HV to 3000HV.
Preferably, the thickness of wearing layer is in the range of 0.1 micron to 4.5 micron.
Preferably, wearing layer is formed by one of following method: physical vapour deposition (PVD), chemical gaseous phase are heavy
Long-pending, plasma gas phase deposition, plating, chemical plating, carburizing, nitriding, carbo-nitriding, shot-peening with
And surface hardening heat treatment.
Preferably, wearing layer is formed by one of llowing group of materials: metal level, diamond like carbon, carbide,
Nitride, silicide, boride and oxide.Alternatively, wearing layer is formed by chromium nitride.
According to another aspect of the present invention it also relates to a kind of drive shaft for screw compressor, its
In, drive shaft includes the bias being arranged on the compression mechanism for driving screw compressor of its end
Crank-pin, eccentric crank pin includes being parallel to the drive surface that the rotation axis of drive shaft extends.At least exist
Being provided with wearing layer in the substantial middle of drive surface and outwardly part, wearing layer is for passing through physics
Vapour deposition, chemical gaseous phase deposition, plasma gas phase deposition, plating, chemical plating, carburizing, ooze
What nitrogen, carbo-nitriding, shot-peening or surface hardening heat treatment were formed comprises metal level, diamond like carbon, carbon
The hardened layer of compound, nitride, silicide, boride or oxide.
According to another aspect of the present invention it also relates to a kind of unloading lining for screw compressor,
Wherein, unloading lining includes the hole in generally D-shaped, and hole has the eccentric crank pin with screw compressor
Drive surface coordinate driven surface.At least it is provided with wear-resisting in the part of the substantial middle of driven surface
Layer, wearing layer is by physical vapour deposition (PVD), chemical gaseous phase deposition, plasma gas phase deposition, electricity
What plating, chemical plating, carburizing, nitriding, carbo-nitriding, shot-peening or surface hardening heat treatment were formed comprises
The hardened layer of metal level, diamond like carbon, carbide, nitride, silicide, boride or oxide.
Accompanying drawing explanation
By description referring to the drawings, the feature of one or several embodiment of the present invention and
Advantage will become better understood by, wherein:
Fig. 1 is the longitudinal section of screw compressor；
Fig. 2 is the eccentric crank pin group with unloading lining of the drive shaft of the screw compressor in Fig. 1
Dress schematic diagram；
Fig. 3 shows the schematic perspective view of the eccentric crank pin of the drive shaft of Fig. 2；
Fig. 4 shows the schematic perspective view of the unloading lining of Fig. 2；
Fig. 5 schematically shows the side forming wearing layer according to first embodiment of the invention
Method；And
Fig. 6 is the schematic diagram of wearing layer.
Detailed description of the invention
Description related to the preferred embodiment is the most exemplary below, and be definitely not the present invention and
Application or the restriction of usage.Use identical reference to represent identical portion in various figures
Part, the structure of thus like parts will not be repeated again.
First total structure and the operation logic of screw compressor will be described with reference to Fig. 1.Shown in Fig. 1
It is high side compressors, however, it should be understood that the high side compressors in Fig. 1 is only merely for saying
Bright purpose, and the unrestricted present invention.The present invention may be adapted to any kind of compressor, including low
Pressure side compression machine, vertical compressor, horizontal compressor etc..
As it is shown in figure 1, screw compressor 100 (the most also can be referred to as compressor) typically wraps
Include housing 110, be arranged on the top cover 112 of housing 110 one end and be arranged on housing 110 other end
Bottom 114.Housing 110 is provided with the motor 20 being made up of stator 122 and rotor 124.Turn
Son 124 is provided with drive shaft 30 to drive by determining scroll element 150 and dynamic scroll element 160 is constituted
Compression mechanism 10.Dynamic scroll element 160 includes end plate 164, is formed at the hub portion 162 of end plate side
With the spiral helicine blade 166 being formed at end plate opposite side.Determine scroll element 150 include end plate 154,
The spiral helicine blade 156 being formed at end plate side and the row of the substantial middle position being formed at end plate
QI KOU 152.Determining helical blade 156 and the helical-blade of dynamic scroll element 160 of scroll element 150
A series of volume is formed at the compression chamber being gradually reduced to radially inner side from radial outside between sheet 166.
Wherein, the compression chamber of outermost radial outside is in pressure of inspiration(Pi), and the compression chamber of radially inner most is in aerofluxus
Pressure.Middle compression chamber is between pressure of inspiration(Pi) and pressure at expulsion, thus is also referred to as middle pressure
Chamber.
The side of dynamic scroll element 160 is by the top (it constitutes thrust surfaces) of main bearing seat 140
Support, a part for drive shaft 30 is supported by the base bearing being arranged in main bearing seat 140.Drive shaft
One end of 30 is provided with eccentric crank pin 32, at eccentric crank pin 32 and the hub of dynamic scroll element 160
Unloading lining 42 it is provided with between portion 162.By the driving of motor 20, dynamic scroll element 160 will
(that is, the central axis of scroll element 160 is moved around determining whirlpool relative to determining scroll element 150 translation rotation
The central axis of rotation parts 150 rotates, but dynamic scroll element 160 itself will not be around the center of itself
Axis rotates) to realize the compression of fluid.Above-mentioned translation rotation is by determining scroll element 150 and dynamic whirlpool
The cross slip-ring arranged between rotation parts 160 realizes.
In the example of the screw compressor shown in Fig. 1, in the bottom of compressor housing, storage has lubrication
Agent.Correspondingly, it is formed in drive shaft 30 approximately along its axially extended passage, is i.e. formed at and drives
The centre bore 136 of moving axis 30 lower end and extend up to eccentric crank pin 32 end face from centre bore 136
Eccentric orfice 134.The end of centre bore 136 be immersed in the lubricant bottom compressor housing or
Otherwise it is supplied with lubricant.In the operation process of compressor, one end of centre bore 136
It is fed with lubricant by feeding lubricating device, enters the lubricant of centre bore 136 in drive shaft 30
In rotary course subject to centrifugal forces and pumped or be thrown in eccentric orfice 134 and along bias
Hole 134 flows up the end face reaching up to eccentric crank pin 32.End face from eccentric crank pin 32
The lubricant discharged is along the gap between unloading lining 42 and eccentric crank pin 32 and unloading lining
Gap between 42 and hub portion 162 flows downward in the recess arriving main bearing seat 140.It is gathered in recessed
A part of lubricant in portion flows through base bearing and flows downward, and a part of lubricant is by hub portion 162
Stir and move upward and arrive the downside of the end plate 164 moving scroll element 160 and along with dynamic scroll element
The translation rotation of 160 and spread all over dynamic scroll element 160 and the thrust surfaces of main bearing seat 140.In pressure
In the operation process of contracting machine, the lubricant on various movable parts being supplied in compressor be thrown out of and
Splash to form drop or mist.
In the screw compressor shown in Fig. 1, in order to realize the compression of fluid, determine scroll element 150
And must effectively seal between dynamic scroll element 160.On the one hand, the spiral of scroll element 150 is determined
Between top and the end plate 164 of dynamic scroll element 160 of blade 156 and dynamic scroll element 160
Helical blade 166 top and the end plate 154 determining scroll element 150 between need axial seal.
The axial elasticity of screw compressor is well known to those skilled in the art, and the most no longer carries out it
Describe in detail.
On the other hand, the side surface of the helical blade 156 of scroll element 150 and dynamic scroll element are determined
It is also required to radial seal between the side surface of the helical blade 166 of 160.Therebetween this footpath
Come real to sealing generally by means of the relative displacement between eccentric crank pin 32 and unloading lining 42
Existing.Specifically, in operation process, by the driving of motor 20, dynamic scroll element 160 will
Relative to determining scroll element 150 translation rotation, thus dynamic scroll element 160 will produce centrifugal force.
On the other hand, the eccentric crank pin 32 of drive shaft 30 also can produce in rotary course and contribute to reality
Now determine the driving force component of the radial seal of scroll element 150 and dynamic scroll element 160.Dynamic vortex
The helical blade 166 of parts 160 will abut in determine whirlpool by means of above-mentioned centrifugal force and driving force component
On the helical blade 156 of rotation parts 150, thus realize radial seal therebetween.When can not
Pressurized contents (such as solid impurity, lubricating oil and liquid refrigerant) enters blocks in compression chamber
Time between helical blade 156 and helical blade 166, helical blade 156 and helical blade 166
Can the most radially be separated from each other to allow foreign body to pass through, i.e. eccentric crank pin 32 with unload
Carry and create relative displacement between lining 42, therefore prevent helical blade 156 or 166 to damage.
This can be radially spaced-apart ability be that screw compressor provides radial compliance, improve compressor
Reliability.
But, the relative displacement between eccentric crank pin 32 and unloading lining 42 makes them by mistake
Hurry up, excessive wear.In order to solve this problem, in the present invention, to eccentric crank pin 32 and/or
The part easy to wear of unloading lining 42 is coated with coating rubbing-layer to improve its hardness and wearability.
Referring to Fig. 2 to Fig. 4, eccentric crank pin and unloading lining are described in detail.
As it is shown on figure 3, it illustrates the schematic perspective view of the eccentric crank pin of drive shaft.Drive shaft
One end of 30 includes eccentric crank pin 32.Drive shaft 30 is formed approximately along with drive shaft 30
The eccentric orfice 134 of the parallel first direction (longitudinal direction) of rotation axis with to eccentric crank pin
The end supply lubricant of 32.The eccentric crank pin 32 of drive shaft 30 is joined via unloading lining 42
It is combined in the hub portion 162 of dynamic scroll element 160, as shown in Figure 1.Eccentric crank pin 32 includes
It is parallel to the drive surface 321 that the rotation axis of drive shaft 30 extends.Correspondingly, lining 42 is unloaded
The hole of the generally D-shaped that confession eccentric crank pin 32 passes includes can be with the drive surface of eccentric crank pin 32
321 driven surface 143 coordinated.Unloading lining 42 and eccentric crank pin 32 are being assembled to compressor
After 100, the size in the hole of the generally D-shaped in unloading lining 42 is more than the chi of eccentric crank pin 32
Very little to guarantee dynamic scroll element 160 and the radial compliance determined between scroll element 150.
As in figure 2 it is shown, it illustrates the assembling schematic diagram of unloading lining and eccentric crank pin.Work as unloading
When lining 42 is installed to eccentric crank pin 32, eccentric crank pin 32 is contained in unloading lining 42
In D-shaped hole, meanwhile, the drive surface 321 of eccentric crank pin 32 and the driven surface 143 unloading lining 42
Coordinate.By this structure, when eccentric crank pin 32 rotates, due to the drive surface of eccentric crank pin 32
321 coordinate with the driven surface 143 of unloading lining 42, and therefore eccentric crank pin 32 can drive unloading
Lining 42 rotates.It addition, the width of the drive surface 321 of eccentric crank pin 32 (that is, is perpendicular to drive
The size of the axis direction of moving axis) it is less than the width of the driven surface 143 unloading lining 42 (i.e., vertically
The size of axis direction in drive shaft).So, the drive surface 321 of eccentric crank pin 32 can phase
There is relative motion in the driven surface 143 for unloading lining 42.
In the preferable operating mode of compressor and ideal design thereof and manufacture size (that is, without manufacturing and installing by mistake
Difference) in the case of, when the compressor is operating, determine scroll element and the helical blade of dynamic scroll element
Can be tightly bonded together.Now, between center and the center of drive shaft of unloading lining
Distance maximum and substantially constant.
However, it is found by the inventors that, cause due to manufacturing and fixing error determining scroll element and dynamic vortex
The centre-to-centre spacing of parts is not consistent, therefore, after compressor operating a period of time, and unloading lining
Relative displacement (it corresponds to manufacturing and fixing error), tool can be produced between set and eccentric crank pin
Body ground, unloads the smooth of lining.It addition, inventor also finds, under actual condition, when running into
When impurity or liquid refrigerant enter, owing to unloading lining occurs fortune relatively relative to eccentric crank pin
Dynamic so that scroll element can be determined to the off-centring of drive shaft in the center of dynamic scroll element therefore
Separate momently with the helical blade of dynamic scroll element, prevent it from damaging.
During the actual motion of compressor, the driven surface 143 of unloading lining 42 and eccentric crank pin
The drive surface 321 of 32 is all by normal load, and exists relatively between two driven surface 143,321
Motion.Therefore, in driven surface 143 and the drive surface 321 of eccentric crank pin 32 of unloading lining 42
Create serious abrasion, thus shorten its service life, have impact on the work efficiency of compressor.
To this end, can be at the driven surface 143 of unloading lining 42 and/or eccentric crank pin according to the present invention
Wearing layer (being referred to as " hardening coat " or " hardening film ") it is provided with in the drive surface 321 of 32
50 to improve its wearability.
Referring to Fig. 5 and Fig. 6, the example of the wearing layer according to the present invention and process engineering thereof is carried out
Describe.
As it is shown in figure 5, by the base material S of coating to be coated (unloading lining 42 the most herein
The drive surface 321 of driven surface 143 and/or eccentric crank pin 32) it is placed in chamber and is connect
Ground or be connected to negative power supply, target T (such as, chromium target) is also placed in chamber simultaneously
And it is connected to cathode power supply.To chamber evacuation, in it, fill nitrogen simultaneously.Target thing
Matter ionizes under the arcing that low-voltage, big electric current produce with nitrogen, and by electric field acceleration,
Striking work forms chromium nitride film layer and adheres on substrate surface.
Above-mentioned technical process is only an example of physical vapour deposition (PVD), is not intended to limit the present invention.
The wearing layer 50 of the present invention can be formed by other technical processs as known in the art, such as,
Chemical gaseous phase deposition, plasma gas phase deposition, plating, chemical plating, carburizing, nitriding, carbon nitrogen are altogether
Ooze, shot-peening, surface hardening heat treatment etc..According to various technical processs, wearing layer 50 can be by metal
Layer, diamond like carbon, carbide, nitride, silicide, boride or oxide etc. are formed, such as,
Wearing layer 50 can be formed by chromium nitride.
In the present invention, eccentric crank pin 32 and/or unloading lining 42 can be by powdered metallurgical material systems
Becoming, its case hardness is substantially in the range of 600HV to 800HV.When according to Fig. 5 and Fig. 6 institute
The technical process shown is at eccentric crank pin 32 and/or unloads on lining 42 (such as, at eccentric crank pin
In the driven surface 143 of the drive surface 321 of 32 and/or unloading lining 42) to be coated with substantially 2 micro-to 4
During the thick chromium nitride wearing layer 50 of rice, the case hardness of this chromium nitride wearing layer 50 can reach
The scope of 1500HV to 3000HV, reaches the scope of 1700HV to 2700HV alternatively.By
This, can significantly improve the drive surface of eccentric crank pin 32 and/or the table of the driven surface of unloading lining 42
Surface hardness, and its abrasion resistance properties can be greatly enhanced.It addition, the thickness of wearing layer 50 can be
In the range of 0.1 micron to 4.5 microns.
Inventor is to the above-mentioned eccentric crank pin 32 being coated with chromium nitride wearing layer 50 and unloading lining 42
Carry out reliability test.Specifically, this eccentric crank pin 32 and unloading lining 42 are installed to pressure
Contracting machine, makes compressor run 500 hours under high-speed overload operating mode, finds driving of eccentric crank pin 32
The driven surface of dynamic face and unloading lining 42 is almost without wearing and tearing.
Above-mentioned test shows: by eccentric crank pin 32 drive surface and/or unloading lining 42 from
After being coated with coating rubbing-layer 50 on dynamic face, wearing layer 50 can stop eccentric crank pin 32 and unloading lining
The powdered metallurgical material of 42 directly contacts, such that it is able to prevent powdered metallurgical material from coming off.Therefore, resistance to
Mill layer 50 substantially increases eccentric crank pin 32 and/or the anti-wear performance of unloading lining 42.
Additionally, in some cases, in order to make eccentric crank pin 32 transport according to it with unloading lining 42
Dynamic form can be good fit, and the drive surface 321 of eccentric crank pin 32 can have approximately centrally located
The slightly convex part at place.Wearing layer 50 can be provided only on the approximate centre of drive surface 321
In slightly convex part or the approximate centre of driven surface 143.Or, can be arranged on whole
In drive surface 321 and/or driven surface 143.It addition, except drive surface 321 and/or driven surface 143
Outside, it is also possible to being coated with through frayed other parts of eccentric crank pin 32 and/or unloading lining 42
Coating rubbing-layer.
It should be understood that the appearance profile of wearing layer 50 and/or position is set can be according to actual needs
And shape.
Specifically describe various embodiments and the modification of the present invention, but this area skill
Art personnel it should be understood that the invention is not limited in above-mentioned specific embodiment and modification but can
To include other various possible combinations and combinations.
Although having described the various embodiments of the present invention in detail at this, it should be appreciated that the present invention is also
Be not limited to the detailed description of the invention describing in detail here and illustrating, without departing from the present invention essence and
Other modification and variant is may be effected by one skilled in the art in the case of scope.All these changes
Type and variant are within the scope of the present invention.And, all components described here can be by it
He replaces by the component of technical upper equivalent.
Claims (12)
1. a screw compressor (100), including:
Compression mechanism (10), described compression mechanism (10) is configured to be compressed working fluid；With
And
Drive shaft (30), described drive shaft (30) is constructed to be permeable to drive described compression mechanism (10)；
Wherein, described drive shaft (30) includes eccentric crank pin (32), described compression mechanism (10)
And it is provided with unloading lining (42) between described eccentric crank pin (32) so that described eccentric crank pin
(32) drive described compression mechanism (10) to realize described compression via described unloading lining (42)
The radial compliance of mechanism (10),
Described eccentric crank pin (32) includes contacting also relative displacement with described unloading lining (42)
Eccentric crank pin auxiliary section, described unloading lining (42) includes connecing with described eccentric crank pin (32)
Touch and the unloading lining auxiliary section of relative displacement, and
Described eccentric crank pin auxiliary section is with at least one in described unloading lining auxiliary section at least
Wearing layer (50) it is provided with in a part.
2. screw compressor (100) as claimed in claim 1, wherein, described eccentric crank pin
(32) include being parallel to the drive surface (321) that the rotation axis of described drive shaft (30) extends, institute
State eccentric crank pin auxiliary section and include at least some of of described drive surface (321).
3. screw compressor (100) as claimed in claim 2, wherein, at least drives described in being positioned at
It is provided with described wearing layer (50) on the approximate centre in dynamic face (321) and outwardly part.
4. screw compressor (100) as claimed in claim 2, wherein, described unloading lining (42)
Including accommodating the hole of described eccentric crank pin (32), described hole has and described eccentric crank pin
(32) driven surface (143) that described drive surface (321) coordinates, described unloading lining auxiliary section is wrapped
Include at least some of of described driven surface (143).
5. screw compressor (100) as claimed in claim 4, wherein, at least in described driven surface
(143) described wearing layer (50) it is provided with in the part of substantial middle.
6. the screw compressor (100) as according to any one of claim 1 to 5, wherein, described
Wearing layer (50) is case hardness hardened layer in the range of 1500HV to 3000HV.
7. the screw compressor (100) as according to any one of claim 1 to 5, wherein, described
The thickness of wearing layer (50) is in the range of 0.1 micron to 4.5 micron.
8. the screw compressor (100) as according to any one of claim 1 to 5, wherein, described
Wearing layer (50) is formed by one of following method: physical vapour deposition (PVD), chemical gaseous phase deposition, etc.
Gas ions vapour deposition, plating, chemical plating, carburizing, nitriding, carbo-nitriding, shot-peening and surface
Quenching heat treatment.
9. the screw compressor (100) as according to any one of claim 1 to 5, wherein, described
Wearing layer (50) is formed by one of llowing group of materials: metal level, diamond like carbon, carbide, nitride,
Silicide, boride and oxide.
10. screw compressor (100) as claimed in claim 9, wherein, described wearing layer (50)
Formed by chromium nitride.
11. 1 kinds of drive shafts (30) for screw compressor (100), wherein, described drive shaft
(30) the compression mechanism for driving described screw compressor (100) being arranged on its end is included
(10) eccentric crank pin (32), described eccentric crank pin (32) includes being parallel to described drive shaft
(30) drive surface (321) that rotation axis extends, and
At least it is provided with resistance in the substantial middle and outwardly part of described drive surface (321)
Mill layer (50), described wearing layer (50) be by physical vapour deposition (PVD), chemical gaseous phase deposition, etc. from
Daughter vapour deposition, plating, chemical plating, carburizing, nitriding, carbo-nitriding, shot-peening or surface hardening
What heat treatment was formed comprises metal level, diamond like carbon, carbide, nitride, silicide, boride
Or the hardened layer of oxide.
12. 1 kinds of unloading linings (42) for screw compressor (100), wherein, described unloading
Lining (42) includes that the hole in generally D-shaped, described hole have and described screw compressor (100)
The driven surface (143) that coordinates of the drive surface (321) of eccentric crank pin (32), and
In the part of the substantial middle of described driven surface (143), at least it is provided with wearing layer (50),
Described wearing layer (50) is to be sunk by physical vapour deposition (PVD), chemical gaseous phase deposition, plasma chemical vapor
Long-pending, plating, chemical plating, carburizing, nitriding, carbo-nitriding, shot-peening or the formation of surface hardening heat treatment
Comprise metal level, diamond like carbon, carbide, nitride, silicide, boride or oxide
Hardened layer.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510196948.3A CN106151029A (en) | 2015-04-23 | 2015-04-23 | Scroll compressor and drive shaft and unload bushing for scroll compressor |
| KR1020177033288A KR20170138506A (en) | 2015-04-23 | 2016-03-09 | Drive shafts and unloading bushes for scroll compressors and scroll compressors |
| PCT/CN2016/075986 WO2016169349A1 (en) | 2015-04-23 | 2016-03-09 | Scroll compressor and driving shaft and unloading bush for scroll compressor |
| EP16782497.8A EP3287638A4 (en) | 2015-04-23 | 2016-03-09 | Scroll compressor and driving shaft and unloading bush for scroll compressor |
| JP2018506467A JP2018517097A (en) | 2015-04-23 | 2016-03-09 | Scroll compressor and drive shaft and unload bush for scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510196948.3A CN106151029A (en) | 2015-04-23 | 2015-04-23 | Scroll compressor and drive shaft and unload bushing for scroll compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106151029A true CN106151029A (en) | 2016-11-23 |
Family
ID=57346918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510196948.3A Pending CN106151029A (en) | 2015-04-23 | 2015-04-23 | Scroll compressor and drive shaft and unload bushing for scroll compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106151029A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111089055A (en) * | 2018-10-23 | 2020-05-01 | 艾默生环境优化技术(苏州)有限公司 | Scroll compressor having a plurality of scroll members |
| CN112761943A (en) * | 2019-11-05 | 2021-05-07 | 丹佛斯商用压缩机公司 | Scroll compressor including crank pin having upper recess |
| CN114270060A (en) * | 2019-05-29 | 2022-04-01 | Xr井下有限责任公司 | Material treatment for diamond to diamond reactive material bearing bonding |
| WO2023051004A1 (en) * | 2021-09-29 | 2023-04-06 | 艾默生环境优化技术(苏州)有限公司 | Scroll compressor |
| US11994006B2 (en) | 2018-07-30 | 2024-05-28 | Xr Reserve Llc | Downhole drilling tool with a polycrystalline diamond bearing |
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| CN111089055A (en) * | 2018-10-23 | 2020-05-01 | 艾默生环境优化技术(苏州)有限公司 | Scroll compressor having a plurality of scroll members |
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