CN107762847A - Movable scroll component, machining method thereof and scroll compressor - Google Patents
Movable scroll component, machining method thereof and scroll compressor Download PDFInfo
- Publication number
- CN107762847A CN107762847A CN201610707588.3A CN201610707588A CN107762847A CN 107762847 A CN107762847 A CN 107762847A CN 201610707588 A CN201610707588 A CN 201610707588A CN 107762847 A CN107762847 A CN 107762847A
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- China
- Prior art keywords
- dynamic vortex
- hub portion
- end plate
- vortex part
- root
- 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.)
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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
- 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
- F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
- F04C18/0269—Details concerning the involute wraps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention relates to a movable scroll component, a machining method thereof and a scroll compressor. The orbiting scroll member (160A, 160B, 160C, 160D) includes: an end plate (164), a swirl vane (166) formed on one side of the end plate, and a hub (162) formed on the other side of the end plate, the hub including a substantially cylindrical wall portion (W) including an inner root portion (IR) located inside the hub and an outer root portion (OR) located outside the hub, wherein the other side of the end plate includes a thrust surface (T) and a bottom surface (B) located inside the hub, and the inner root portion is offset toward one side of the swirl vane with respect to the outer root portion by a predetermined distance (h1) in a longitudinal direction of the orbiting scroll member.
Description
Technical field
The present invention relates to a kind of dynamic vortex part and its processing method and the screw compressor for including the dynamic vortex part.
Background technology
The content of this part provide only the background information related to the disclosure, and it may not form prior art.
Screw compressor generally includes the compression mechanism being made up of determine vortex part and dynamic vortex part.Dynamic vortex part with
Determine vortex part engages and under the driving of drive shaft relative to determine vortex part translation rotation, so as to realize to working fluid
Compression.
When developing the compressor of different capabilities (particularly more Large Copacity), it is necessary to ensure that each part has enough strong
Degree.It is one of to consider that part is ensured that the intensity at the hub portion of dynamic vortex part for dynamic vortex part.For example,
For the dynamic vortex part of a specific model, when it is applied to the platform compared with low capacity, intensity is enough, but is applied
When the platform of larger capacity, the hub portion of dynamic vortex part is even complete there may be part due to bearing bigger driving load
The fatigue rupture in portion.The part that the manufacturer of compressor is desired to have model as few as possible is imitated with saving cost and improving stock
Rate.Thus, it is desirable to have better method utilizes the part of current version, rather than redesign and even remake new model
Part.
The content of the invention
It is an object of the invention to provide a kind of dynamic vortex part for improving fatigue rupture.
Another object of the present invention is to improve the fatigue rupture of existing dynamic vortex part spy using simple machining
Property.
According to the one side of embodiment of the present invention, there is provided a kind of dynamic vortex part, including：End plate；Formed in institute
State the volution blade of end plate side；And formed in the hub portion of the end plate opposite side, the hub portion includes substantially cylindric
Wall portion, the wall portion includes the interior root on the inside of the hub portion and the outer root on the outside of the hub portion, wherein described
The opposite side of end plate includes thrust surface and the bottom surface on the inside of the hub portion, and the interior root is along the dynamic whirlpool
The longitudinal direction for revolving part offsets preset distance relative to the outer root towards the side of the volution blade.
According to the other side of embodiment of the present invention, there is provided a kind of screw compressor, including it is as described above dynamic
Scroll element.
According to the another aspect of embodiment of the present invention, there is provided a kind of processing method of dynamic vortex part, including carry
For dynamic vortex part, the dynamic vortex part includes：End plate, the volution blade in the end plate side is formed, and formed
The hub portion of the end plate opposite side, the hub portion include substantially cylindric wall portion, and the wall portion is included in the hub portion
The interior root of side and the outer root on the outside of the hub portion, the opposite side of the end plate include thrust surface and positioned at institute
State the bottom surface on the inside of hub portion；At least remove the material in the region adjacent with the hub portion of the bottom surface and cause described interior
Longitudinal direction of the portion along the dynamic vortex part offsets pre- spacing relative to the outer root towards the side of the volution blade
From.
Using the present invention, the fatigue rupture characteristic at the interior root in the hub portion of dynamic vortex part is improved, and it adds
Work method is simple, and cost is low, and the dynamic vortex part of new model is even remake without redesigning.
Brief description of the drawings
By description referring to the drawings, the feature and advantage of one or several embodiments of the invention will become more
Add and be readily appreciated that, wherein：
Fig. 1 is the longitudinal section of conventional screw compressor；
Fig. 2 and 2A is the sectional view and partial enlarged drawing of conventional dynamic vortex part respectively
Fig. 3 and 3A is the dynamic vortex part sectional view and partial enlarged drawing according to first embodiment of the invention respectively；
Fig. 4 and 4A is the dynamic vortex part sectional view and partial enlarged drawing according to second embodiment of the invention respectively；
Fig. 5 and 5A is the dynamic vortex part sectional view and partial enlarged drawing according to third embodiment of the invention respectively；
Fig. 6 and 6A is the dynamic vortex part sectional view and partial enlarged drawing according to four embodiment of the invention respectively；With
And
Fig. 7 shows the dynamic vortex part of first embodiment of the invention relative to the tired of the dynamic vortex part shown in Fig. 2
The comparison diagram of labor intensity factor.
Embodiment
Description below to the various embodiments of the present invention is only exemplary, and is definitely not to the present invention and its application
Or the limitation of usage.Adopt in various figures and identical part is denoted by the same reference numerals, therefore the structure of same parts
Make and will not be repeated again.
Reference picture 1 is described to the total structure and operation logic of screw compressor first.As shown in figure 1, screw compressor
100 (can also be referred to as compressor sometimes below), generally comprised housing 110, the top cover 112 for being arranged on the one end of housing 110, set
The other end of housing 110 bottom 114 and be arranged between top cover 112 and housing 110 with by the inner space of compressor point
It is divided into the dividing plate 116 of high-pressure side and low-pressure side.Space composition high-pressure side between dividing plate 116 and top cover 112, and dividing plate 116, shell
Space between body 110 and bottom 114 forms low-pressure side.Low-pressure side is provided with the inlet suction port 118 for sucking fluid,
High-pressure side is provided with the exhaust joint 119 for discharging the fluid after compressing.It is provided with housing 110 by stator 122 and rotor
124 motors 120 formed.Drive shaft 130 is provided with rotor 124 to drive by determine vortex part 150 and dynamic vortex part 160
The compression mechanism of composition.Dynamic vortex part 160 includes end plate 164, is formed in the hub portion 162 of end plate side and formed another in end plate
The spiral helicine blade 166 of side.Determine vortex part 150 include end plate 154, formed end plate side spiral helicine blade
156 exhaust outlet 152 with formation at the substantial middle position of end plate.In the helical blade 156 and dynamic vortex of determine vortex 150
A series of volumes are formed between 160 helical blade 166 in compression chamber C1, the C2 being gradually reduced from radial outside to radially inner side
And C3.Wherein, the compression chamber C1 of outermost radial outside is in pressure of inspiration(Pi), and the compression chamber C3 of radially inner most is in pressure at expulsion.
Middle compression chamber C2 is between pressure of inspiration(Pi) and pressure at expulsion, so as to also be referred to as middle pressure chamber.
The side of dynamic vortex part 160 is supported by the top (i.e. supporting part) of main bearing seat 140, one end of drive shaft 130
Supported by the base bearing 144 being arranged in main bearing seat 140.One end of drive shaft 130 is provided with eccentric crank pin 132.Generally
Driving bearing DU is provided with the inner side in hub portion 162 (see Fig. 2).It is provided between eccentric crank pin 132 and driving bearing DU
Unload bushing 142.The eccentric crank pin 132 of drive shaft 130 drives dynamic vortex portion via unloading bushing 142 and driving bearing DB
The hub portion 162 of part 160, so that dynamic vortex part 160 is relative to translation rotation (that is, the dynamic vortex part of determine vortex part 150
160 central axis around determine vortex part 150 central axis rotate, but dynamic vortex part 160 itself will not around itself
Central axis rotates) to realize the compression of fluid.Above-mentioned translation rotation by determine vortex part 150 and dynamic vortex part 160 it
Between the cross slip-ring 190 that sets realize.Fluid after determine vortex part 150 and dynamic vortex part 160 compress passes through row
Gas port 152 is discharged to high-pressure side.In order to prevent on high-tension side fluid to be back to low pressure via exhaust outlet 152 under specific circumstances
Side, check valve or air bleeding valve 170 can be set at exhaust outlet 152.
Reference picture 2 and Fig. 2A, in the dynamic vortex part 160 of prior art, hub portion 162 generally includes substantially cylindric
Wall portion W, and including root (root in the hereinafter referred to) IR on the inside of the wall portion W and the root on the outside of wall portion W (under
Referred to herein as outer root) OR.The end plate 164 of dynamic vortex part 160 includes formation in the thrust surface T of the side of hub portion 162 and is located at
The bottom surface B of the inner side of hub portion 162.From from Fig. 2 and Fig. 2A sectional view, outer root OR by chamfered transition to thrust surface T and
Wall portion W lateral surface, and medial surfaces of the interior root IR by chamfered transition to wall portion W.Thrust surface T and bottom surface B is in identical
Plane.When the dynamic vortex part shown in Fig. 2 and 3 is applied to the compression platform of more Large Copacity, caused by drive shaft 130
Drive load and be press-fitted in hub portion load caused by driving bearing DU under effect, the particularly interior root in root in hub portion
Fatigue rupture can usually occur at portion IR.
Dynamic vortex part below with reference to Fig. 3 and 3A descriptions according to first embodiment of the invention.Dynamic vortex part 160A
In the hub portion 162 of end plate side and the spiral helicine blade 166 in end plate opposite side is formed including end plate 164, formation.Hub portion
162 generally include substantially cylindric wall portion W, and the wall portion W is including the interior root IR on the inside of hub portion and positioned at hub
Outer root OR on the outside of portion.Dynamic vortex part 160A end plate 164 includes being formed in the side of hub portion 162 and main bearing seat 140
The engagement of corresponding thrust surface thrust surface T and the bottom surface B positioned at the inner side of hub portion 162.From from Fig. 3 and Fig. 3 A sectional view,
Outer root OR is preferably by chamfered transition to thrust surface T and wall portion W lateral surface, and interior root IR preferably passes through chamfering mistake
Cross the medial surface to wall portion W.In the present embodiment, interior root IR is designed to relative along the longitudinal direction X-X of dynamic vortex part
Side skew preset distance h1 in outer root OR towards volution blade.Preferably, interior root IR is by removing whole bottom surface B's
Material and relative to outer root OR offset so that the difference in height between bottom surface B and thrust surface T is equal to preset distance h1, Yi Jizhi
Pushing surface T and bottom surface B is in different planes.In other words, whole bottom surface B is recessed towards the side of volution blade 166 relative to thrust surface T
Enter, such as recessed predetermined altitude h1.It is this recessed the bottom surface B of the dynamic vortex part of specific model shown in Fig. 2 to be carried out
Such as turning etc. arbitrarily machines and removes a certain amount of material from end plate 164 to realize.For the dynamic vortex portion of different model
Part, the recessed predetermined altitude h1 can change as the case may be, such as predetermined altitude h1 can be set as end plate 164
The 1/10 to 1/5 of thickness h 2.In the example depicted in fig. 3, the predetermined altitude is set as 3mm.
Referring to Fig. 3 A, by the way that interior root IR position is displaced to from original position P1 with thrust surface T-phase same level
Current position P2 (corresponding to height h1 between position P1 and position P2), can be effectively reduced the fatigue at interior root IR and break
Bad stress distribution.By Digital calculation modelling, interior root IR is typically subjected to tension, and pressure is typically subjected at outer root OR and is answered
Power.Due to the above-mentioned change of interior root IR position, the tension for causing fatigue rupture at interior root IR is can be effectively reduced, and
Compression at outer root OR slightly raises, but for manufacture dynamic vortex part metal material fatigue rupture characteristic and
Speech, this is still very favorable.
Fig. 7 shows Fig. 3 embodiment relative to the improvement of the fatigue rupture intensity of Fig. 2 particular example.In figure
Dotted line Goodman FRF=1 represent the judgement line that the fatigue strength factor is equal to 1, and dotted line Goodman FRF=1.2 represent tired
Labor intensity factor is equal to 1.2 judgement line.Transverse axis represents mean stress (=(maximum stress+minimum stress)/2), the longitudinal axis in figure
Represent stress amplitude (=(maximum stress-minimum stress)/2).Fatigue strength at triangular representation Fig. 2 of black interior root
The factor, the rhombus of black represent the fatigue strength factor at Fig. 3 interior root.At triangular representation Fig. 2 of grey outer root
The fatigue strength factor, the rhombus of grey represents the fatigue strength factor at Fig. 3 outer root.It can be seen from figure 7 that according to
The fatigue strength factor (substantially 1.28) at the interior root of the dynamic vortex part of embodiment of the present invention relative to Fig. 2 dynamic vortex
The fatigue strength factor (substantially 1.05) at the interior root of part is significantly offset towards the bigger direction of the fatigue strength factor (to be changed
Kind substantially 21.9%), i.e. more difficult generation fatigue rupture.Compared to this, the dynamic vortex part of embodiment of the present invention it is outer
The fatigue strength factor at root does not have significant change, still may insure satisfied fatigue rupture intensity.
The principle of embodiment of the present invention is to change the position of the interior root in hub portion by removing material to optimize entirely
The stress distribution in hub portion, and then meet the intensity requirement of dynamic vortex part, and in non-conventional design by increase material (such as
The modes such as the thickness in increase hub portion) meet the intensity requirement of dynamic vortex part, so process simple and save in practical operation
Cost-saving, and without redesigning or manufacturing the dynamic vortex part of new model, reduce the quantity of required depot spare part.
Referring to Fig. 4 and 4A descriptions second embodiment of the invention.It is different from first embodiment, interior root
Material in the regions adjacent with hub portion 162 of the IR by removing bottom surface B is and relative to outer root OR skews.Thus, bottom surface B
The part being removed forms the annular recess C with horizontal bottom CA.Annular recess C minimum point (that is, the water of annular recess
Flat bottom CA) above-mentioned preset distance h1 can be offset relative to outer root OR along the longitudinal direction.Similarly, retouched in Fig. 5 and 5A
State according in third embodiment of the present invention, annular recess C has inclined bottom CB.In the basis that Fig. 6 and 6A is described
In the 4th embodiment of the present invention, annular recess C has the bottom CC of bending (such as arc-shaped).Due to being from shown in Fig. 2
Example set out, the bottom surface B part not being removed still can be in same plane with thrust surface T.
In addition to the beneficial effect of first embodiment, the second to the 4th embodiment also has following extra beneficial effect
Fruit.Due to only removing bottom surface B portion of material, so processing can be with simpler.Due to maintaining bottom surface B substantial middles part
Material, so the intensity of the part is retained.Especially for the 4th embodiment, due to the bottom CC using bending,
So that the stress distribution at interior root IR more optimizes, more it is less likely to occur fatigue rupture.
Although the present invention above with reference to the dynamic vortex component representation applied to low-pressure side screw compressor, this area
Technical staff should be appreciated that the principle of the present invention can also be applied to the dynamic vortex part of high-pressure side screw compressor and obtain
Same beneficial effect.
Although described above is to shown in Fig. 2 example carry out processing method, i.e. at least remove bottom surface B with hub portion
Material in 162 adjacent regions and longitudinal direction X-Xs of the root IR along dynamic vortex part is relative to outer root OR courts in causing
Preset distance h1 is offset to the side of volution blade, it will be understood by those skilled in the art that the side based on teachings of the present invention
Method, the interior root in the hub portion of dynamic vortex part can also be designed and manufactured as along dynamic whirlpool when designing and manufacturing dynamic vortex part
The longitudinal direction for revolving part offsets preset distance h1 relative to outer root towards the side of volution blade, so that being so designed that
There are more preferable antifatigue destructive characteristics with the dynamic vortex part of manufacture, be not only able to be applied to the appearance that its script is designed for
Amount, and can apply to the compressor of more Large Copacity.
Although the various embodiments of the present invention are described in detail herein, it should be appreciated that the invention is not limited in this
In the embodiment being described in detail and show, without departing from the spirit and scope of the present invention can be by this area
Technical staff realizes other modifications and variant.All these modifications and variant are within the scope of the present invention.It is moreover, all
Component described here can be replaced by component equivalent in other technologies.
Claims (10)
1. a kind of dynamic vortex part (160A, 160B, 160C, 160D), including：
End plate (164),
The volution blade (166) in the end plate side is formed, and
Formed includes substantially cylindric wall portion (W), the wall portion in the hub portion (162) of the end plate opposite side, the hub portion
Including the interior root (IR) on the inside of the hub portion and the outer root (OR) on the outside of the hub portion,
The opposite side of wherein described end plate includes thrust surface (T) and the bottom surface (B) on the inside of the hub portion, and
Longitudinal direction (X-X) of the interior root along the dynamic vortex part is relative to the outer root towards the volution blade
Side skew preset distance (h1).
2. dynamic vortex part as claimed in claim 1, wherein the preset distance for the end plate thickness (h2) 1/10~
1/5。
3. dynamic vortex part as claimed in claim 1, wherein the preset distance is 3 millimeters.
4. the dynamic vortex part as any one of claim 1-3, wherein the interior root is by removing the whole bottom
The material in face and offset relative to the outer root so that the difference in height between the bottom surface and the thrust surface is equal to described pre-
Set a distance.
5. the dynamic vortex part as any one of claim 1-3, wherein the interior root is by removing the bottom surface
Material in the region adjacent with the hub portion and offset relative to the outer root, the part being removed of the bottom surface is formed
Annular recess (C), the minimum point of the annular recess offset the pre- spacing along the longitudinal direction relative to the outer root
From.
6. dynamic vortex part as claimed in claim 5, wherein the annular recess is formed as having horizontal bottom (CA), inclined
Oblique bottom (CB) or the bottom (CC) of bending.
7. dynamic vortex part as claimed in claim 5, wherein the part not being removed of the bottom surface with the thrust surface
In same plane.
8. a kind of screw compressor, including the dynamic vortex part as any one of claim 1-7.
9. a kind of processing method of dynamic vortex part, including
Dynamic vortex part is provided, the dynamic vortex part includes：End plate, the volution blade in the end plate side is formed, and
Formed in the hub portion of the end plate opposite side, the hub portion includes substantially cylindric wall portion, and the wall portion is included positioned at described
Interior root on the inside of hub portion and the outer root on the outside of the hub portion, the opposite side of the end plate include thrust surface and
Bottom surface on the inside of the hub portion,
At least remove the material in the region adjacent with the hub portion of the bottom surface and cause the interior root along the dynamic whirlpool
The longitudinal direction for revolving part offsets preset distance relative to the outer root towards the side of the volution blade.
10. processing method as claimed in claim 9, wherein removing the material of the bottom surface by mach mode.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610707588.3A CN107762847A (en) | 2016-08-23 | 2016-08-23 | Movable scroll component, machining method thereof and scroll compressor |
| PCT/CN2017/096568 WO2018036381A1 (en) | 2016-08-23 | 2017-08-09 | Movable scroll component, method for processing same, and scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610707588.3A CN107762847A (en) | 2016-08-23 | 2016-08-23 | Movable scroll component, machining method thereof and scroll compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107762847A true CN107762847A (en) | 2018-03-06 |
Family
ID=61264696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610707588.3A Pending CN107762847A (en) | 2016-08-23 | 2016-08-23 | Movable scroll component, machining method thereof and scroll compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107762847A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1107944A (en) * | 1993-10-21 | 1995-09-06 | 株式会社日本自动车部品总合研究所 | Scroll compressor |
| CN1247278A (en) * | 1998-06-22 | 2000-03-15 | 特库姆塞制品公司 | Oldam's coupling of whirl compressor |
| CN1629486A (en) * | 2003-12-16 | 2005-06-22 | Lg电子株式会社 | Eccentric bush structure in radial compliance scroll compressor |
| CN205955985U (en) * | 2016-08-23 | 2017-02-15 | 艾默生环境优化技术(苏州)有限公司 | Movable scroll component and scroll compressor |
-
2016
- 2016-08-23 CN CN201610707588.3A patent/CN107762847A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1107944A (en) * | 1993-10-21 | 1995-09-06 | 株式会社日本自动车部品总合研究所 | Scroll compressor |
| CN1247278A (en) * | 1998-06-22 | 2000-03-15 | 特库姆塞制品公司 | Oldam's coupling of whirl compressor |
| CN1629486A (en) * | 2003-12-16 | 2005-06-22 | Lg电子株式会社 | Eccentric bush structure in radial compliance scroll compressor |
| CN205955985U (en) * | 2016-08-23 | 2017-02-15 | 艾默生环境优化技术(苏州)有限公司 | Movable scroll component and scroll compressor |
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