CN105697338B - A kind of new flush type Anti-blow by piston structure - Google Patents
A kind of new flush type Anti-blow by piston structure Download PDFInfo
- Publication number
- CN105697338B CN105697338B CN201610203015.7A CN201610203015A CN105697338B CN 105697338 B CN105697338 B CN 105697338B CN 201610203015 A CN201610203015 A CN 201610203015A CN 105697338 B CN105697338 B CN 105697338B
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- Prior art keywords
- compression
- piston
- ring
- ring groove
- oil
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Compressor (AREA)
Abstract
The invention discloses a kind of flush type Anti-blow by piston structure, including the piston being arranged in cylinder sleeve, there is spatia between piston outer wall and inboard wall of cylinder liner, piston outer wall is provided with compression and oil ring groove, compression ring is equiped with compression, oil ring is equiped with oil ring groove, compression ring is movably set in compression, formed with back clearance chamber between compression ring and compression ring groove sidewall, formed with the clearance channel for turning on back clearance chamber with spatia between compression ring and compression upper wall and/or compression lower wall, pilot hole is additionally provided with piston only, the pilot hole made of powdered metallurgical material built with putting inserts, put inserts and be internally formed and dredge passage.The present invention alters oil using pressure difference caused by air compressor machine or internal combustion engine pressure process and by dredge that passage removes piston back clearance intracavitary, make the service life of air compressor machine or internal combustion engine longer, run more stable, for processing and manufacturing, required precision is relatively low, cost can be reduced, is advantageous to production and processing manufacture.
Description
Technical field
The invention belongs to air compressor machine or technical field of internal combustion engines, and in particular to a kind of for the new of air compressor machine or internal combustion engine
Flush type Anti-blow by piston structure.
Background technology
For air compressor machine or the piston of internal combustion engine, piston outer wall is provided with three seals annular groove (reference can be made to patent from top to bottom
CN202108699U and patent CN104329239A), respectively the first annular groove, the second annular groove and the 3rd annular groove, wherein the first ring
The first gas ring and second gas ring coordinated with inboard wall of cylinder liner hermetic seal is equiped with groove and the second annular groove respectively, the 3rd annular groove is built-in
Provided with the 3rd oil ring coordinated with inboard wall of cylinder liner oil seal, first gas ring and second gas ring are used for upper piston area air cavity and work
The hermetic seal between the oil gas cavity of bottom is filled in, while prevents the fluid of piston lower portion cavity or mist of oil from entering upper piston area cavity
Interior (altering oily problem), the 3rd oil ring strikes off most of fluid on inboard wall of cylinder liner, remain a small amount of fluid be attached to inboard wall of cylinder liner be used for
Friction, lubrication between piston, further, for ease of assembling and anti-long term wear, first gas ring, second gas ring and the 3rd oil ring
It is designed to take the elastic open loop structure (referring to patent CN10178339A) of mouth (gap), in view of above-mentioned piston structure, piston
During being pumped in cylinder sleeve, the fluid or mist of oil of piston lower portion cavity are inevitably from first gas ring, second
At the taking mouthful of compression ring and the 3rd oil ring or the gap location between first gas ring, second gas ring and the 3rd oil ring and inboard wall of cylinder liner is scurried into
To upper piston area cavity, i.e., existing air compressor machine and internal combustion engine generally existing alter oily problem.
To solve the above problems, prior art proposes some solutions.Such as patent CN102588252A and patent
CN101334021A is improved in terms of material, so that sealing ring or inboard wall of cylinder liner are more resistant, to keep between piston and cylinder sleeve more
Lasting sealing property；In another example patent CN104329239A, patent CN103790803A, CN10178339A and patent
CN202108700U from the configuration aspects of compression ring and/or oil ring improve so that the sealing effectiveness between sealing ring and inboard wall of cylinder liner more
It is good to prevent from altering oil, these schemes be in simple terms the mode for using " stifled " to solve problem, but practical effect is simultaneously
It is undesirable, preferable effect is likely to be breached within short time early stage, but compression ring and oil ring are ground after running after a while
Problem remains unchanged after damage, and in addition for the manufacturing, its requirement on machining accuracy is higher, and cost is consequently increased；And use
The mode of " stifled ", oily problem is altered even if can effectively improve, the cloth oil mass of inboard wall of cylinder liner can be also reduced but then, so as to increase
Frictional dissipation between piston and inboard wall of cylinder liner, it is unfavorable for air compressor machine or internal combustion engine normal use.
The content of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a kind of for the new embedding of air compressor machine or internal combustion engine
Dress formula Anti-blow by piston structure, the present invention use the mode of " thin " antipodal with prior art to be asked to solve to alter the technology of oil
Topic, process and assemble hole wherein in piston gas ring groove, setting-in concrete dynamic modulus product made of powdered metallurgical material in pilot hole
Inserts is put, is easy to fabricate.
To achieve these goals, the technical solution adopted in the present invention is：
A kind of flush type Anti-blow by piston structure, including the piston being arranged in cylinder sleeve, piston outer wall and inboard wall of cylinder liner it
Between there is spatia, piston outer wall is provided with compression and oil ring groove from top to bottom, be equiped with compression and inboard wall of cylinder liner seal
The compression ring of cooperation, the oil ring coordinated with inboard wall of cylinder liner sealing is equiped with oil ring groove, compression ring is movably set in compression, compression ring
Formed with back clearance chamber between compression ring groove sidewall, formed with by back clearance between compression ring and compression upper wall and/or compression lower wall
The clearance channel that chamber turns on spatia, it is additionally provided with connect back clearance chamber with the piston lower portion cavity in cylinder sleeve on piston only
Pilot hole, interior be embedded with of the pilot hole put inserts with what pilot hole matched, and it is more made of powdered metallurgical material that this puts inserts
Hole product, put some fine pores inside inserts and formed and dredge passage by put the conducting of inserts both ends.
Wherein, the inserts of putting is made up of copper and tin base powder metallurgy material.It is porous made of copper and tin base powder metallurgy material
Gap product, its internal void size are 0.01-0.1mm, and even pore distribution, advantageously form both ends connection dredges passage,
And under differential pressure action by piston alter oily process this dredge passage discharge.And this is put inserts and carries out essence without special equipment
Refinement processing, efficiently solve piston and put the fine through hole processing problem of inserts, be advantageous to processing and fabricating.
Further, the both ends for putting inserts are provided with oil suction sponge, and oil is altered in order to absorb storage piston.
Wherein, the compression is two, respectively first gas ring groove and second gas ring groove, and first gas ring groove is arranged at the
Above two compressions, first gas ring and second gas ring are equiped with respectively in first gas ring groove and second gas ring groove, the through hole is set
It is placed in first gas ring groove and/or second gas ring groove.Preferably, pilot hole is embedding embedded with putting in each pilot hole to be multiple
Part, even circumferential distribution of the plurality of pilot hole along compression.
Further, the compression ring and the oil ring are to be provided with the elastic open loop structure for taking mouth.
After adopting the above technical scheme, the invention has the advantages that compared with the prior art,：
A kind of flush type Anti-blow by piston structure of the present invention, piston are provided with the gas coordinated with inboard wall of cylinder liner sealing
Ring and oil ring, wherein oil ring are used for inboard wall of cylinder liner cloth oil to play lubrication to piston, while oil ring is additionally operable to remove cylinder sleeve
Most of fluid of inwall attachment, compression ring are used for hermetic seal between piston and inboard wall of cylinder liner, are ensureing the output of upper piston area cavity just
The compressed air of normal pressure power.Because compression ring is movably set in compression, thus when piston is descending along cylinder sleeve, upper piston area chamber
Body air-breathing is negative pressure state, and the air pressure of piston lower portion cavity is more than the air pressure of upper piston area cavity, and compression ring and inboard wall of cylinder liner
Between friction and inertia power force the upper surface of compression ring and compression upper wall to be brought into close contact, now back clearance chamber passes through under compression ring
The clearance channel in portion connects with spatia, and the fluid scurried into by oil ring in spatia enters back clearance chamber by the clearance channel,
The part fluid of back clearance intracavitary utilizes the oil pocket dredged passage and enter piston lower portion for putting inserts；When piston is up along cylinder sleeve
When, upper piston area cavity is sealed into pressurized state, and the air pressure of upper piston area cavity is much larger than the air pressure of piston lower portion cavity, and
Friction and inertia power between compression ring and inboard wall of cylinder liner forces the lower surface of compression ring and compression lower wall to be brought into close contact, and now carries on the back
Gap chamber is connected by the clearance channel on compression ring top with the air cavity of upper piston area, and the fluid that back clearance intracavitary is retained is in pressure action power
The lower oil pocket dredged passage and enter piston lower portion by putting some fine pores compositions inside inserts.Present invention use is with showing
There is the mode of technology antipodal " thin " (dredging) to solve the technical problem for altering oil, it is pressurizeed using air compressor machine or internal combustion engine
Pressure difference caused by process simultaneously removes piston back clearance intracavitary by dredging passage and alters oil, and it slightly reduces compression ratio, by test
Using the air compressor machine compression ratio only lower than conventional air compressor machine 2% or so of the present invention, but the present invention fundamentally solves pneumatics
The piston of machine or internal combustion engine alters oily problem, makes the service life of air compressor machine or internal combustion engine longer, and operation is more stable.Due in piston
Conventional drilling machine is not will pass through on body and is drilled with fine through hole, can first pass through powder metallurgical sintering process using the present invention makes
Inside has the inserts of putting of micropore, then this is put into inserts in the pilot hole of piston, is so easy to processing and fabricating.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples：
Fig. 1 is the cross section structure diagram of the working condition of the present invention；
Fig. 2 is the structural representation of the piston stroking upward state shown in A in Fig. 1；
Fig. 3 is the structural representation of the descent of piston state of the present invention；
Fig. 4 is the schematic diagram of another structure of the present invention.
In figure：1. cylinder sleeve；2. piston；3. spatia；4. compression；41. first gas ring groove；42. second gas ring groove；5. oil
Annular groove；6. compression ring；61. first gas ring；62. second gas ring；7. oil ring；8. spill port；9. back clearance chamber；10. clearance channel；11.
Pilot hole；12. put inserts；13. oil suction sponge.
Embodiment
As described below is only presently preferred embodiments of the present invention, is not intended to limit the scope of the present invention.
Referring to Fig. 1-Fig. 4, a kind of flush type Anti-blow by piston structure, including the piston 2 being arranged in cylinder sleeve 1, outside piston 2
There is spatia 3, the outer wall of piston 2 is provided with compression 4 and oil ring groove 5 from top to bottom, in compression 4 between wall and the inwall of cylinder sleeve 1
The compression ring 6 coordinated with the inner wall sealing of cylinder sleeve 1 is equiped with, wherein, the compression 4 is two, the respectively He of first gas ring groove 41
Second gas ring groove 42, first gas ring groove 41 are arranged above second gas ring groove 42, in first gas ring groove 41 and second gas ring groove 42
First gas ring 61 and second gas ring 62 are equiped with respectively, and compression ring 6 is used for hermetic seal between piston 2 and the inwall of cylinder sleeve 1, ensures piston
2 upper chambers export the compressed air of normal pressure, and the oil ring 7 coordinated with the inner wall sealing of cylinder sleeve 1, oil are equiped with oil ring groove 5
Ring 7 is used in cylinder sleeve 1 wall cloth oil to play lubrication to piston 2, while oil ring 7 is additionally operable to remove the attachment of the inwall of cylinder sleeve 1
Most of fluid, it is preferred that spill port 8 is additionally provided with oil ring groove 5.In the present embodiment, the compression ring 6 and the oil ring 7 are
The elastic open loop structure for taking mouth is provided with, is easy to assemble and wear-resistant, keeps permanent sealing.
The piston 2 of the present embodiment is provided with the pilot hole 11 for connecting back clearance chamber 9 with the lower cavity of piston 2 in cylinder sleeve 1, should
It is embedded with pilot hole 11 and puts inserts 12 with what pilot hole 11 matched, it is porous made of powdered metallurgical material that this puts inserts 12
Gap product, put some fine pores inside inserts 12 and formed and dredge passage by put the conducting of the both ends of inserts 12.Wherein, it is described to put
Inserts 12 is made up of copper and tin base powder metallurgy material.Concrete dynamic modulus product made of copper and tin base powder metallurgy material, its internal void
Size is 0.01-0.1mm, and even pore distribution advantageously forms the passage of dredging of both ends connection, and will be lived under differential pressure action
Plug 2 alter oily process this dredge passage discharge.And this is put inserts 12 and carries out fine design without special equipment, effectively
Solve piston 2 and put the fine through hole processing problem of inserts 12, be advantageous to processing and fabricating.
Further, the both ends for putting inserts 12 are provided with oil suction sponge 13, and oil, fluid are altered in order to absorb storage piston
It is adsorbed on oil suction sponge 13, oil suction sponge 13 is close to the both ends for putting inserts 12, is advantageous to fluid and is filled with putting the end face of inserts 12
Tap is touched, and is put so that fluid is easier to enter in the inside fine pore of inserts 12.Wherein pilot hole 11 can also be piston 2
Body inner bending intercommunicating pore, referring to Fig. 4, pilot hole 11 includes the cross drilling that is laterally pierced from first gas ring groove 41 and from piston
The vertical drilling that 2 bottoms vertically pierce, cross drilling are connected with vertical drilling, and this favourable piston 2 of Drilling operation mode is processed.
Compression ring 6 is movably set in compression 4, and it is that a compression ring 6 can move up and down in compression 4 that activity, which is set, compression ring 6
Between the side wall of compression 4 formed between back clearance chamber 9, compression ring 6 and the upper wall of compression 4 and/or the lower wall of compression 4 formed with will
The clearance channel 10 that back clearance chamber 9 turns on spatia 3, the pilot hole 11 are arranged at first gas ring groove 41 and/or second gas ring
In groove 42, in the present embodiment, the pilot hole 11 is arranged in first gas ring groove 41, and pilot hole 11 is arranged at first gas ring groove 41
Better than second gas ring groove 42 is arranged at, the fluid scurried into from oil ring 7 first passes around in second gas ring groove 42 interior anti-channeling oil effect
Compression ring 6 stops that second gas ring 62 acts on identical with the second gas ring 62 in prior art piston 2 here, for hermetic seal and goes
Except most of fluid, the back clearance chamber 9 of second gas ring groove 42 is used for the buffering cavity that oil is altered between oil ring 7 and first gas ring 61, warp
The back clearance chamber 9 that the fluid still scurried into upwards enters first gas ring groove 41 is crossed after second gas ring 62, finally from thin under differential pressure effect
Pathway 13 is back to the lower cavity of piston 2.The pilot hole 11 is multiple, is embedded with each pilot hole 11 and puts inserts
12, even circumferential distribution of the plurality of pilot hole 11 along compression 4,
Referring to Fig. 2, when piston 2 is up along cylinder sleeve 1, the upper chamber of piston 2 is sealed into pressurized state, the upper chambers of piston 2
The air pressure of body is much larger than the air pressure of the lower cavity of piston 2, and the friction and inertia power between compression ring 6 and the inwall of cylinder sleeve 1 is compeled
The lower surface and the lower wall of compression 4 for making compression ring 6 are brought into close contact, now clearance channel 10 and work of the back clearance chamber 9 by the top of compression ring 6
Fill in the air cavity connection on 2 tops, due to spatia 3, clearance channel 10 and to dredge passage 13 be areola structure, air pressure by when meeting
Gradually decay, therefore the lower cavity of 2 upper chamber air pressure P1 ＞ spatias of piston, 39 air pressure P3 ＞ pistons of air pressure P2 ＞ back clearances chamber 2
Air pressure P4, the fluid retained in back clearance chamber 9 is under pressure action power from the oil pocket for dredging passage 13 and entering the bottom of piston 2.
Referring to Fig. 3, when piston 2 is descending along cylinder sleeve 1, the upper chamber air-breathing of piston 2 is negative pressure state, the lower chamber of piston 2
The air pressure of body is more than the air pressure of the upper chamber of piston 2, and the friction and inertia power between compression ring 6 and the inwall of cylinder sleeve 1 forces
The upper surface of compression ring 6 is brought into close contact with the upper wall of compression 4, now clearance channel 10 and gap of the back clearance chamber 9 by the bottom of compression ring 6
Chamber 3 connects, and the fluid scurried into spatia 3 by oil ring 7 enters back clearance chamber 9 by the clearance channel 10, the portion in back clearance chamber 9
Fluid is divided to pass through the oil pocket dredged passage 13 and enter the bottom of piston 2 connected with the lower cavity of piston 2 in cylinder sleeve 1.
The present invention uses the mode of " thin " antipodal with prior art, and to solve the technical problem for altering oil, it utilizes sky
Pressure difference caused by press or internal combustion engine pressure process simultaneously alters oil by dredging in the removing back clearance chamber 9 of piston 2 of passage 13, and it is slightly
Compression ratio is reduced, by testing the air compressor machine compression ratio only lower than conventional air compressor machine 2% or so using the present invention, but it is of the invention
The piston 2 for fundamentally solving air compressor machine or internal combustion engine alters oily problem, makes the service life of air compressor machine or internal combustion engine longer, fortune
Row is more stable.
Embodiment described above is not intended to limit the invention, for those skilled in the art, the present invention's
Equivalent substitution is carried out to which part technical characteristic within spirit and principle, should be included in the scope of the protection.
Claims (6)
1. a kind of new flush type Anti-blow by piston structure, including the piston (2) being arranged in cylinder sleeve (1), piston (2) outer wall with
There is spatia (3), piston (2) outer wall is provided with compression (4) and oil ring groove (5), compression ring from top to bottom between cylinder sleeve (1) inwall
The compression ring (6) coordinated with cylinder sleeve (1) inner wall sealing is equiped with groove (4), is equiped with oil ring groove (5) close with cylinder sleeve (1) inwall
Seal the oil ring (7) coordinated, it is characterised in that：Compression ring (6) is movably set in compression (4), compression ring (6) and compression (4) side
Between wall formed between back clearance chamber (9), compression ring (6) and compression (4) upper wall and/or compression (4) lower wall formed with will the back of the body
The clearance channel (10) of gap chamber (9) and spatia (3) conducting, it is additionally provided with back clearance chamber (9) and cylinder sleeve (1) on piston (2) body
The pilot hole (11) of interior piston (2) lower cavity connection, the pilot hole (11) is interior to be embedded with what is matched with pilot hole (11)
Inserts (12) is put, it is concrete dynamic modulus product made of powdered metallurgical material that this, which puts inserts (12), puts some micro- of inserts (12) inside
Pinhole formed will put inserts (12) both ends conducting dredge passage.
2. new flush type Anti-blow by piston structure according to claim 1, it is characterised in that：The inserts (12) of putting is
Copper and tin base powder metallurgy material is made.
3. new flush type Anti-blow by piston structure according to claim 1 or 2, it is characterised in that：It is described to put inserts
(12) both ends are provided with oil suction sponge (13).
4. new flush type Anti-blow by piston structure according to claim 2, it is characterised in that：The compression (4) is
Two, respectively first gas ring groove (41) and second gas ring groove (42), first gas ring groove (41) is arranged at second gas ring groove (42)
First gas ring (61) and second gas ring (62), institute are equiped with respectively in top, first gas ring groove (41) and second gas ring groove (42)
Pilot hole (11) is stated to be arranged in first gas ring groove (41) and/or second gas ring groove (42).
5. new flush type Anti-blow by piston structure according to claim 2, it is characterised in that：The pilot hole (11) is
It is multiple, it is embedded with each pilot hole (11) and puts inserts (12), even circumferential of the plurality of pilot hole (11) along compression (4)
Distribution.
6. new flush type Anti-blow by piston structure according to claim 1, it is characterised in that：The compression ring (6) and institute
It is to be provided with the elastic open loop structure for taking mouth to state oil ring (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610203015.7A CN105697338B (en) | 2016-04-01 | 2016-04-01 | A kind of new flush type Anti-blow by piston structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610203015.7A CN105697338B (en) | 2016-04-01 | 2016-04-01 | A kind of new flush type Anti-blow by piston structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105697338A CN105697338A (en) | 2016-06-22 |
| CN105697338B true CN105697338B (en) | 2018-03-06 |
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ID=56218960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610203015.7A Active CN105697338B (en) | 2016-04-01 | 2016-04-01 | A kind of new flush type Anti-blow by piston structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN105697338B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1778200A (en) * | 1927-12-17 | 1930-10-14 | Electric Boat Co | Piston and ring mounting therefor |
| HU228167B1 (en) * | 2008-02-19 | 2013-01-28 | Laszlo Wilheim | Split sealing ring for pistons |
| JP2010164030A (en) * | 2009-01-19 | 2010-07-29 | Toyota Motor Corp | Internal combustion engine piston |
| WO2014043666A1 (en) * | 2012-09-17 | 2014-03-20 | Meacham G B Kirby | Reduced friction piston rings |
| CN104088773A (en) * | 2014-06-20 | 2014-10-08 | 李星 | Piston for car air compressor |
| CN204101991U (en) * | 2014-08-29 | 2015-01-14 | 湖南三德科技股份有限公司 | A kind of pressure type flow amount controller |
| CN205503396U (en) * | 2016-04-01 | 2016-08-24 | 奉化市鼎联汽车空压机厂 | Novel oil leakage piston structure is prevented to flush type |
-
2016
- 2016-04-01 CN CN201610203015.7A patent/CN105697338B/en active Active
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| CN105697338A (en) | 2016-06-22 |
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