CA2175918A1 - Device for removing oil, soot and/or other foreign matter from an air, gas and/or steam flow - Google Patents
Device for removing oil, soot and/or other foreign matter from an air, gas and/or steam flowInfo
- Publication number
- CA2175918A1 CA2175918A1 CA002175918A CA2175918A CA2175918A1 CA 2175918 A1 CA2175918 A1 CA 2175918A1 CA 002175918 A CA002175918 A CA 002175918A CA 2175918 A CA2175918 A CA 2175918A CA 2175918 A1 CA2175918 A1 CA 2175918A1
- Authority
- CA
- Canada
- Prior art keywords
- drum
- connection
- chamber
- air
- oil
- 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.)
- Abandoned
Links
- 239000004071 soot Substances 0.000 title claims abstract description 10
- 239000002245 particle Substances 0.000 claims description 7
- 230000004323 axial length Effects 0.000 claims description 4
- 230000018109 developmental process Effects 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 abstract description 7
- 239000003921 oil Substances 0.000 description 39
- 239000007789 gas Substances 0.000 description 8
- 238000001816 cooling Methods 0.000 description 3
- 239000010705 motor oil Substances 0.000 description 3
- 238000013022 venting Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- WWYNJERNGUHSAO-XUDSTZEESA-N (+)-Norgestrel Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](CC)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 WWYNJERNGUHSAO-XUDSTZEESA-N 0.000 description 1
- 241000978166 Astrea Species 0.000 description 1
- 241000518994 Conta Species 0.000 description 1
- 241000353097 Molva molva Species 0.000 description 1
- 101150007148 THI5 gene Proteins 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- CEJLBZWIKQJOAT-UHFFFAOYSA-N dichloroisocyanuric acid Chemical compound ClN1C(=O)NC(=O)N(Cl)C1=O CEJLBZWIKQJOAT-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/14—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/037—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of inertial or centrifugal separators, e.g. of cyclone type, optionally combined or associated with agglomerators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/05—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of air, e.g. by mixing exhaust with air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/02—Air cleaners
- F02M35/022—Air cleaners acting by gravity, by centrifugal, or by other inertial forces, e.g. with moistened walls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
- F16N39/002—Arrangements for conditioning of lubricants in the lubricating system by deaeration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M2013/0422—Separating oil and gas with a centrifuge device
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B1/00—Engines characterised by fuel-air mixture compression
- F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
- F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Separating Particles In Gases By Inertia (AREA)
- Processes For Solid Components From Exhaust (AREA)
Abstract
A device for removing oil, soot and/or other foreign matter from an air, gas and/or steam flow, useful in particular for internal combustion engines, is characterised by at least one drum (5) arranged in a closed chamber (2) and capable of being rotated by a drive (8) around its axis or a longitudinal axis (L). The drum defines an inner space (5') and is provided, in at least part of its envelope (9) that encloses its axis and delimits its inner space, with a plurality of holes, in the manner of a sieve, through which the compartment of the chamber formed by the inner space of the drum and the compartment of the chamber around the drum communicate with each other. At least one first air, gas and/or steam flow supply connection (18) opens into one of the chamber compartments and a second connection (15) for carrying away a purified, oil- and/or soot-free air, gas and/or steam flow opens into the other chamber compartment.
Description
DE~ICEFORRE~OVING OILAN~/ORSOOTAND/ORFOREiGN S~BSTANCES
F~O~ ASTREA~ OFAIR;GAS~ND/OR V~POOR.
The prosent inve~t~on re~ates ~o a device for removing oiland/or 500t and/orforeignsubstancesfrom astream ofair,~as ~nd/orvapoor-In combustion engines, particularly in 0tto and dieselengines, it is necessa~y to ~ent the engine spaces containing or conducting the engine oil, i~e. the oil serving for the lu~rication of the engine, and in par~icular also to lead a~ay componen~s of this engine oil which vapori2ed upon operatioh of the engine (oil ~apor)~
For various reasons, ven~ing into the en~ironment is not possible or iY undesired. In the case of traditional engines, this venting is effected into the air in~ake pipe of the combus~ion engine, for instance into the part of said pipe lying between an air filter and the carburetor, ~o tha~
the oil vapors from the engine compartmen~ are also burned in the combustion chambe~s or eylinders of the engine With this type of venting, considerable problems are encountered, namely inter alia the conta~ination of the ~ir inta~e pipe, of the carbure~or, and of the operating parts presen~ in the air intake pipe andJor the ca~L~Lor due to deposits of oil, e~c~
~he object or the present in~ention is to provide a d~vice by ~hich the removal of oil and/or soot is possib:Le in a reliable manne~ and ~hich accordingly can be used as soot filter and, in particula~ however, also as oil filter o~ oil separator in combustion engines, but also as air and gasfilter al olher applications.
The device of the invention ig particula~ly suited as oil fil~er or oil separator in motor vehicles and/or ih ~o~bustion engines. In this case, due to the feeding of fresh air the tempe~ature of which is lower than the O temperature of the oil vapor into the inside of ~he dru~ or to the wall of said drum, cooling of ~he wall o~ the drum as well as, at the same ~ime, cooling of the oil v~por in thQ
individual ~pace of the chamber surrounding the dr~m i5 effected so that condens~tion of the oil vapor ~ake~ place already in this partial space but to th~ greatQr pa~t on ~he wall sur~dce of the drum, and the condensed oil can be discharged as oil condensate. Passage of oil v~por through the wail surface of the rota~ing drum is prevented by the - fact th~t the oil v~po~ c~nde~ses there immediately and, due 0 to its re~atively l~rge surf~ce tehsiOh, the condensed oil cannot pass thro~gh the fine-mesh uall of the drum, but is rather ~o~ed radially out~ard by the rctating drum or slung off from it.
The device of the in~ention can also be used as a fil~er for removing liquid and/or solid particles, fo~ example soot, dust etc., from a strearn of air and/or gas.
DESCRIPTION OF T~ DRAWINGS
The invention will be explained in furt~er detail below with reference to a preferred embodiment. In the drawing:
Fig. 1 sho~s, greatly simplified, in longitudinal section, a deviçe in acoordance ~ith ~he invention which serves as oil separator;
Fig. 2 is a s~ction along the line I - I of Fig. 1.
The de~ice sho~n in the figures, which is intended for use preferably in motor vehicles~ serves for the r~ 1 of vaporized oi~ (oil vapor) or finely divided particles of oil from a stream of air or gas which emerge~ at the vent of an engine compartment con~ain;ng or conducting an ngine oil LO -~ ~lubrican~ for the engine)~ The engine compartment is in this o~nn~tion the spaoe which also receives t~e cam shaftts), the valve tappets, as uell a~ possibly the rocker arm o~ drag lever for the actuating of ~he valvQs of a combustion engine or some other space which contains the engine oil. Ordinarily, the venting of this engine compartment is ef fected via the air intake pipe so th~t oil vapors or fine particles o~ oil emerging at ~he vent are burned in the engine.
It is frequently desirea to remove oil vapor or oil 0 particles and to return the~ as con~en~te to the engine compartment in order, for instance, to avoid deposits of oil in the carburetor, in the air in~ake line, or on operating parts presen~ there, etc. For this purpose, the oil separator shown in the figures is used. It consists essentially of a housing 1 w~ich rorms an inner space 2 which is closed of~ from the outside. In the case of the e~bodiment shown, the housing 1 is deve~op~d in cube or bloc~
shape vith a correspondingly shaped inner space 2~ It is obvious that thQ housing 1, and thus the inner space 2, may also ha~e some other suitable shape~
Within the inner space 2 a drum S is mounted for rotation arou~d an axis L w~ich extends p~rpendicular to the t~o end walls 3 and 4 of the housing 1. The drum 5, which is completely rec~ived by the housing 1, is fa~tened for this purpose on its bottom 6 whi~h is adjacent to the inner o surface of the end wall 4 and i5 arranged in a plane perpendicular to the longitudihal axis L on the one end of ~
shaft 7 which extends in sealed manner out of the inner space 2 through the end wal~ 4 and can be driven in rotation around the longitudinal axis L ~y an electric motor 8 which is provided outside the housing 1 on it or on the end wall 4 .
The shaft 7 is in this connection, for instance, the output shaft of the elec~ric ~otor 8.
The drum 5 consists, in addition to the closed bottom 6 made, for instance, from a blank of corrosion-resistant metal O plate, also of a wall 9 which is de~eloped ~i~h rotational symmetry ~o the longitll~in~l axis L and suLLou..ds said longitudinal axis, the wall being formed by a fine-mesh metal grid, ~hich also consis~s of a corrosion-resistant ~etal, for instance of a corrosion-resistant steel. Furthermore, the screen-like shell g is of ~rus~oconical de~elopment in ~uch a manner that the circular inne~ diameter of the drum 5 decreases f~om the bottom 6 to the other, open end of the drum 5 ~hich is opposit~ said bottom, on ~he open end 10, the wall is preferably rein~orced by a ring 11 ~hich con~ntrically s~-~u.,~s t~e longitudinal axis ~, i. Q. th~
ring ~1 defines a cir~ular c~-~ing ih the drum 5 at ~he end 10 .
Th~ end 10 of the dru~ 9 extends into an auxiliary chamber 12 ~hich i9 formed on the inner surface of the end ~all 3 ~nd which ~L~O~-~S thQ drum 5 in the region o~ the ~0 ;. end 10 o~r a partial axial length which constitutes only a fraction of the total axial length of the drum. The auxiliary Ch~ h~ 12 iS connected to a tubular connection 13 which, sealed-of~ ~rom the inner space 2, i5 rA ~se~ through ~he upper wall 14 arranged parallel to the longitudinal axis ~ and perr~ lar to the end ~alls 3 and 4, and serves for th~ f~A;ng of cold fresh air (arrow A).
Through the end wall 3 there is conduc~ed ~n sealed mannsr a length of pipe 15 which is coaxi~l to the r ongi~ n~ ~ axis ~ and the open end of which ~hich extends ~O into the i~ner space 5' of the drum 5 is adjacent the bottom 6, s~a~e~ from it by an amount ~ich again constitutes ~erely a fractio~ of the total axial length of the drum 5. At its other end, the lQngth of pipe 15, which is also open there, is conducted in sealed fashion outwards through the end wall 3, for connection to a carburetor (hOt shown) of an internal combustion engine.
~ 2175918 In the bottom wall l? which is arranged parallel to ~he wall 14 and spaced from it, therR is provided a connection 18 via whi¢h the oil vapor is fed, as shown by the arrow B, to the oil separator o~ the individu~l space of the inner space 2 ~hich 5ut ~ S the drum 5. As s~o~n in ~he figures, in the embodiment sho~n the connection 18 is so arranged that, in the direction o~ ~he longitudinal axis L, it is clo~er to the e~d w~ll 3 than the end wall 4 and thus also closer to the end lo of the drum ~ whic~ extends practically over the O entire length of the inner spac~ a formed between the end walls 2 and 3 than to the bottom 6, i. e. t~e connection 18 is located in the region of a part of the drum 5 at which the latter has a smaller diameter than the botto~ 6.
Furthermore, the connection 18 is ~aterally displaced yith respect ~o a central plane ~ which contains the longit~ A 1 axis L and extends perpendicular to the wall 14 and thQ
bo~tom wall 17 so that the oil vapor en~ers into the space 2 approxim~tely t~ngentially to the drum 5, as indicated by the arrow B in Fig. 2. In the embodiment shown, th~ connQctio~
0 18 is arranged ih the direc~ vicinity of one of ~he t~o side ~alls 19 and 2~ w~ich lie perpendicular to the e~d ~alls 3 and 4, as ~ell as perpendicular to the ~alls 14 and 17.
on ~he bottom wall 17, in the immediate vicinity of the end Y~ll 4, there is ~no~her connection 20 which de~ouches in~o the inner space 2 and ~ia whic~ the oil condensate which has deposited can be discharged as indicated ~y arrow C, namely, ~or instance, back into the engine ~h. h~r. The arrow D in Fig. 2, inally, also indic~tes the direction of rotation of the drum 5, i. e thi5 direction of rotation is in the same dir~ction at ~he ~p~in~ of the connection 18 into the ihner space 2 as t~e direction of flow (arrow ~) of the entering oil vapor.
The diametQr of the opening surrounded by the ring 11 is so~ewhat greater than the outside dia~eter of the leng~h of pipe 15~
0,.) The manner of operation of the oil separator can ~e des~ribed as follows:
The connec~ion 13 is c~P~ted via a ~ranch to the air intake pipe o~ an internal combustion engine so ~hat cold fresh air is fed via this con~ection 13 as indicated by the arrou A, namely to the auxiliary chamber 12~ The ~nn~ction 18 is connected to the vent of the engine compartment. The connection 21 also leads ~o the engine compartment. The end of ~he length of pipe 15 exte~ing out of the housing 1 is connected to ~`he car~retor.
0~ For the operation of the oil separator, the electric motor 8 is ronhec~ed~ so that the drum 5 ro~ates around the longitudinal axis L in ~he direction indicated by ~he arrow D.
The fresh air which is fed via the connection 13 enters in the region o the a~xiliary chamber lZ through the grid-shape~ wall 9 and, in particular, also through the ~nn~ r slot formed between the ring 11 ~nd the outer surface of the length of pipe 15 into the inner spacQ 5' of the drum 1 (arrow A') and is finally discharged via the open end 16 of the length of pip~ 15 to~ards the car~uretor (ar~ow A' ~ ), as a result of the suction ac~ion of the engine. B~ the mo~ement of rotdtion of the drum 5 and by the centrifugal force pro~l~o~ thereby, ~he fresh air ~ed passes te~porarily al50 through t~e saree~-like uall 9 into the part of the inner space 2 ~ ing the drum 5 ~arrow A'''), but then o ~ flo~s again through the wall 9 ahd is discharged via the length of pipe 15, as i~dic~ted ~y arrow A'~. By means of the streams of air A', A'' and A''', the drum 5 is continuously cooled over its entire wall 9. By the ~low of fresh air A''', a cooling or r~duction of the temperatura o~
the oil vapor present in the inner spa~e 2 around the drum 5 or of the oil--vapor air-gas mixture also takes place, so that there is, in part, a condensation of the oil ~apor dlready in ~he part of the inner spacQ 2 surrounding the drum 5, but particularly on the outer surface of drum 5, and the oll o ~nnA~nR~te which collects on the inner surface of the botto~
7 can ~; -ch~ge via the connection 21. By the fine screen-lik~ development o~ the wall 9, oil vapor or çondensed oil which has a relatively high surfac~ ~ension is preven~ed from passing through the wall 9 in~o the inner space 5'. Oil ~ n~nsing on the outer surface of the wall g is thrown off outward~ by the rotary movement of the drum 5 and then finally passos bac~, via the connection 21, into the engine compart~e~t ~arrow C).
As has been described above and, in particul~r, also shown in Fig. 2, the housing 1 forms an inner space 2 which is also of b~ock or cube shape corresrQn~;ng to the deve~opment of sa~d housing, but in particular in the section~l planes perpendicular to the longitll~; nA 1 axis L has a cross section which differs from circular, na~ely a square cross section in the Qm~o~ment sho~n. By thi~ cross o.. j sectional shape the result is obtained th~t upon the rotation of the drum 5 around the longitu~in~l axis L, a volume of air which rotates ~ogether with the drum cannot ~orm in the part of the inner surface which surrounds the drum. The square cross section thus counteracts the formation of a ~ol~e of air ~hich rotates together with the drum and thus forms, so to speak, a "~affle" ~hich counterac~s this co-rotation.
The same ef~ect is obtAin~ if the housing has a rectangular cross section or else a triang~lar cross section or a different polygonal cross section, for instance a O hexagonal cross sec~ion.
In pri~ciple, there is also the possibility of providing further ba~fles, par~icularly in the form of ri~s, ledges or plates Z3 protruding into the inner space 2 within the housing The in~ention has been described abo~e ~ith reference to one em~o~; nnt. It iS ôbvious that changes and modifications are possible ~ithout t~ereby going beyond the inventive c~t.
Thus, it is ~ossible, for instance, for the wall 9 of the drum 5 to consist of several layers. Furthermore. it iB
al~o possible to de~elop the device as a soot filter, in which case soot-laden gases, for ins~ance exhaust gases of a diesel engine, are fed via the connection 18 and the purified ~Yh~uct gases, i.e. those freed of the particles o~ soot, are dis~harged ~ia the pipe length 1~. The particles of soot as ~o- uell as unburned particles of ~uel preSent are separated out on the rotating drum 5 and burned there (with suita~le developme~t of the ~all 9 of the drum 5 of a catalytically active material) catalytically ~nd/or in particular after ~he slinging-off f~om ~he rotating drum 5 in the part of the inner spac~ 2 surrounding this drum by the feeding of thermal energy, the inner space 2 ~hen being developed as com~us~ion chamber of an af~erburne~.
Furthermore, it is of course also possible to provide a different drive, for instance an exh~ust-gas drive, instead o o~ the electric motor 8.
~ist of Referenc~ Numbers 1 Housing 2 Inner space 3, 4 End wall Drum 5' Inner space 6 Bottom 7 Shaft 8 Electric motor 9 Wall lo End ll Ring 12 Auxiliary chamber 13 Connection 14 Upper uall Pipe length 16 End 17 Bottom wall 18 Connection 19, 20 Side wall 21 Connection A - c Flow D Direction of rotation L Longitudinal axis M Central pl ane
F~O~ ASTREA~ OFAIR;GAS~ND/OR V~POOR.
The prosent inve~t~on re~ates ~o a device for removing oiland/or 500t and/orforeignsubstancesfrom astream ofair,~as ~nd/orvapoor-In combustion engines, particularly in 0tto and dieselengines, it is necessa~y to ~ent the engine spaces containing or conducting the engine oil, i~e. the oil serving for the lu~rication of the engine, and in par~icular also to lead a~ay componen~s of this engine oil which vapori2ed upon operatioh of the engine (oil ~apor)~
For various reasons, ven~ing into the en~ironment is not possible or iY undesired. In the case of traditional engines, this venting is effected into the air in~ake pipe of the combus~ion engine, for instance into the part of said pipe lying between an air filter and the carburetor, ~o tha~
the oil vapors from the engine compartmen~ are also burned in the combustion chambe~s or eylinders of the engine With this type of venting, considerable problems are encountered, namely inter alia the conta~ination of the ~ir inta~e pipe, of the carbure~or, and of the operating parts presen~ in the air intake pipe andJor the ca~L~Lor due to deposits of oil, e~c~
~he object or the present in~ention is to provide a d~vice by ~hich the removal of oil and/or soot is possib:Le in a reliable manne~ and ~hich accordingly can be used as soot filter and, in particula~ however, also as oil filter o~ oil separator in combustion engines, but also as air and gasfilter al olher applications.
The device of the invention ig particula~ly suited as oil fil~er or oil separator in motor vehicles and/or ih ~o~bustion engines. In this case, due to the feeding of fresh air the tempe~ature of which is lower than the O temperature of the oil vapor into the inside of ~he dru~ or to the wall of said drum, cooling of ~he wall o~ the drum as well as, at the same ~ime, cooling of the oil v~por in thQ
individual ~pace of the chamber surrounding the dr~m i5 effected so that condens~tion of the oil vapor ~ake~ place already in this partial space but to th~ greatQr pa~t on ~he wall sur~dce of the drum, and the condensed oil can be discharged as oil condensate. Passage of oil v~por through the wail surface of the rota~ing drum is prevented by the - fact th~t the oil v~po~ c~nde~ses there immediately and, due 0 to its re~atively l~rge surf~ce tehsiOh, the condensed oil cannot pass thro~gh the fine-mesh uall of the drum, but is rather ~o~ed radially out~ard by the rctating drum or slung off from it.
The device of the in~ention can also be used as a fil~er for removing liquid and/or solid particles, fo~ example soot, dust etc., from a strearn of air and/or gas.
DESCRIPTION OF T~ DRAWINGS
The invention will be explained in furt~er detail below with reference to a preferred embodiment. In the drawing:
Fig. 1 sho~s, greatly simplified, in longitudinal section, a deviçe in acoordance ~ith ~he invention which serves as oil separator;
Fig. 2 is a s~ction along the line I - I of Fig. 1.
The de~ice sho~n in the figures, which is intended for use preferably in motor vehicles~ serves for the r~ 1 of vaporized oi~ (oil vapor) or finely divided particles of oil from a stream of air or gas which emerge~ at the vent of an engine compartment con~ain;ng or conducting an ngine oil LO -~ ~lubrican~ for the engine)~ The engine compartment is in this o~nn~tion the spaoe which also receives t~e cam shaftts), the valve tappets, as uell a~ possibly the rocker arm o~ drag lever for the actuating of ~he valvQs of a combustion engine or some other space which contains the engine oil. Ordinarily, the venting of this engine compartment is ef fected via the air intake pipe so th~t oil vapors or fine particles o~ oil emerging at ~he vent are burned in the engine.
It is frequently desirea to remove oil vapor or oil 0 particles and to return the~ as con~en~te to the engine compartment in order, for instance, to avoid deposits of oil in the carburetor, in the air in~ake line, or on operating parts presen~ there, etc. For this purpose, the oil separator shown in the figures is used. It consists essentially of a housing 1 w~ich rorms an inner space 2 which is closed of~ from the outside. In the case of the e~bodiment shown, the housing 1 is deve~op~d in cube or bloc~
shape vith a correspondingly shaped inner space 2~ It is obvious that thQ housing 1, and thus the inner space 2, may also ha~e some other suitable shape~
Within the inner space 2 a drum S is mounted for rotation arou~d an axis L w~ich extends p~rpendicular to the t~o end walls 3 and 4 of the housing 1. The drum 5, which is completely rec~ived by the housing 1, is fa~tened for this purpose on its bottom 6 whi~h is adjacent to the inner o surface of the end wall 4 and i5 arranged in a plane perpendicular to the longitudihal axis L on the one end of ~
shaft 7 which extends in sealed manner out of the inner space 2 through the end wal~ 4 and can be driven in rotation around the longitudinal axis L ~y an electric motor 8 which is provided outside the housing 1 on it or on the end wall 4 .
The shaft 7 is in this connection, for instance, the output shaft of the elec~ric ~otor 8.
The drum 5 consists, in addition to the closed bottom 6 made, for instance, from a blank of corrosion-resistant metal O plate, also of a wall 9 which is de~eloped ~i~h rotational symmetry ~o the longitll~in~l axis L and suLLou..ds said longitudinal axis, the wall being formed by a fine-mesh metal grid, ~hich also consis~s of a corrosion-resistant ~etal, for instance of a corrosion-resistant steel. Furthermore, the screen-like shell g is of ~rus~oconical de~elopment in ~uch a manner that the circular inne~ diameter of the drum 5 decreases f~om the bottom 6 to the other, open end of the drum 5 ~hich is opposit~ said bottom, on ~he open end 10, the wall is preferably rein~orced by a ring 11 ~hich con~ntrically s~-~u.,~s t~e longitudinal axis ~, i. Q. th~
ring ~1 defines a cir~ular c~-~ing ih the drum 5 at ~he end 10 .
Th~ end 10 of the dru~ 9 extends into an auxiliary chamber 12 ~hich i9 formed on the inner surface of the end ~all 3 ~nd which ~L~O~-~S thQ drum 5 in the region o~ the ~0 ;. end 10 o~r a partial axial length which constitutes only a fraction of the total axial length of the drum. The auxiliary Ch~ h~ 12 iS connected to a tubular connection 13 which, sealed-of~ ~rom the inner space 2, i5 rA ~se~ through ~he upper wall 14 arranged parallel to the longitudinal axis ~ and perr~ lar to the end ~alls 3 and 4, and serves for th~ f~A;ng of cold fresh air (arrow A).
Through the end wall 3 there is conduc~ed ~n sealed mannsr a length of pipe 15 which is coaxi~l to the r ongi~ n~ ~ axis ~ and the open end of which ~hich extends ~O into the i~ner space 5' of the drum 5 is adjacent the bottom 6, s~a~e~ from it by an amount ~ich again constitutes ~erely a fractio~ of the total axial length of the drum 5. At its other end, the lQngth of pipe 15, which is also open there, is conducted in sealed fashion outwards through the end wall 3, for connection to a carburetor (hOt shown) of an internal combustion engine.
~ 2175918 In the bottom wall l? which is arranged parallel to ~he wall 14 and spaced from it, therR is provided a connection 18 via whi¢h the oil vapor is fed, as shown by the arrow B, to the oil separator o~ the individu~l space of the inner space 2 ~hich 5ut ~ S the drum 5. As s~o~n in ~he figures, in the embodiment sho~n the connection 18 is so arranged that, in the direction o~ ~he longitudinal axis L, it is clo~er to the e~d w~ll 3 than the end wall 4 and thus also closer to the end lo of the drum ~ whic~ extends practically over the O entire length of the inner spac~ a formed between the end walls 2 and 3 than to the bottom 6, i. e. t~e connection 18 is located in the region of a part of the drum 5 at which the latter has a smaller diameter than the botto~ 6.
Furthermore, the connection 18 is ~aterally displaced yith respect ~o a central plane ~ which contains the longit~ A 1 axis L and extends perpendicular to the wall 14 and thQ
bo~tom wall 17 so that the oil vapor en~ers into the space 2 approxim~tely t~ngentially to the drum 5, as indicated by the arrow B in Fig. 2. In the embodiment shown, th~ connQctio~
0 18 is arranged ih the direc~ vicinity of one of ~he t~o side ~alls 19 and 2~ w~ich lie perpendicular to the e~d ~alls 3 and 4, as ~ell as perpendicular to the ~alls 14 and 17.
on ~he bottom wall 17, in the immediate vicinity of the end Y~ll 4, there is ~no~her connection 20 which de~ouches in~o the inner space 2 and ~ia whic~ the oil condensate which has deposited can be discharged as indicated ~y arrow C, namely, ~or instance, back into the engine ~h. h~r. The arrow D in Fig. 2, inally, also indic~tes the direction of rotation of the drum 5, i. e thi5 direction of rotation is in the same dir~ction at ~he ~p~in~ of the connection 18 into the ihner space 2 as t~e direction of flow (arrow ~) of the entering oil vapor.
The diametQr of the opening surrounded by the ring 11 is so~ewhat greater than the outside dia~eter of the leng~h of pipe 15~
0,.) The manner of operation of the oil separator can ~e des~ribed as follows:
The connec~ion 13 is c~P~ted via a ~ranch to the air intake pipe o~ an internal combustion engine so ~hat cold fresh air is fed via this con~ection 13 as indicated by the arrou A, namely to the auxiliary chamber 12~ The ~nn~ction 18 is connected to the vent of the engine compartment. The connection 21 also leads ~o the engine compartment. The end of ~he length of pipe 15 exte~ing out of the housing 1 is connected to ~`he car~retor.
0~ For the operation of the oil separator, the electric motor 8 is ronhec~ed~ so that the drum 5 ro~ates around the longitudinal axis L in ~he direction indicated by ~he arrow D.
The fresh air which is fed via the connection 13 enters in the region o the a~xiliary chamber lZ through the grid-shape~ wall 9 and, in particular, also through the ~nn~ r slot formed between the ring 11 ~nd the outer surface of the length of pipe 15 into the inner spacQ 5' of the drum 1 (arrow A') and is finally discharged via the open end 16 of the length of pip~ 15 to~ards the car~uretor (ar~ow A' ~ ), as a result of the suction ac~ion of the engine. B~ the mo~ement of rotdtion of the drum 5 and by the centrifugal force pro~l~o~ thereby, ~he fresh air ~ed passes te~porarily al50 through t~e saree~-like uall 9 into the part of the inner space 2 ~ ing the drum 5 ~arrow A'''), but then o ~ flo~s again through the wall 9 ahd is discharged via the length of pipe 15, as i~dic~ted ~y arrow A'~. By means of the streams of air A', A'' and A''', the drum 5 is continuously cooled over its entire wall 9. By the ~low of fresh air A''', a cooling or r~duction of the temperatura o~
the oil vapor present in the inner spa~e 2 around the drum 5 or of the oil--vapor air-gas mixture also takes place, so that there is, in part, a condensation of the oil ~apor dlready in ~he part of the inner spacQ 2 surrounding the drum 5, but particularly on the outer surface of drum 5, and the oll o ~nnA~nR~te which collects on the inner surface of the botto~
7 can ~; -ch~ge via the connection 21. By the fine screen-lik~ development o~ the wall 9, oil vapor or çondensed oil which has a relatively high surfac~ ~ension is preven~ed from passing through the wall 9 in~o the inner space 5'. Oil ~ n~nsing on the outer surface of the wall g is thrown off outward~ by the rotary movement of the drum 5 and then finally passos bac~, via the connection 21, into the engine compart~e~t ~arrow C).
As has been described above and, in particul~r, also shown in Fig. 2, the housing 1 forms an inner space 2 which is also of b~ock or cube shape corresrQn~;ng to the deve~opment of sa~d housing, but in particular in the section~l planes perpendicular to the longitll~; nA 1 axis L has a cross section which differs from circular, na~ely a square cross section in the Qm~o~ment sho~n. By thi~ cross o.. j sectional shape the result is obtained th~t upon the rotation of the drum 5 around the longitu~in~l axis L, a volume of air which rotates ~ogether with the drum cannot ~orm in the part of the inner surface which surrounds the drum. The square cross section thus counteracts the formation of a ~ol~e of air ~hich rotates together with the drum and thus forms, so to speak, a "~affle" ~hich counterac~s this co-rotation.
The same ef~ect is obtAin~ if the housing has a rectangular cross section or else a triang~lar cross section or a different polygonal cross section, for instance a O hexagonal cross sec~ion.
In pri~ciple, there is also the possibility of providing further ba~fles, par~icularly in the form of ri~s, ledges or plates Z3 protruding into the inner space 2 within the housing The in~ention has been described abo~e ~ith reference to one em~o~; nnt. It iS ôbvious that changes and modifications are possible ~ithout t~ereby going beyond the inventive c~t.
Thus, it is ~ossible, for instance, for the wall 9 of the drum 5 to consist of several layers. Furthermore. it iB
al~o possible to de~elop the device as a soot filter, in which case soot-laden gases, for ins~ance exhaust gases of a diesel engine, are fed via the connection 18 and the purified ~Yh~uct gases, i.e. those freed of the particles o~ soot, are dis~harged ~ia the pipe length 1~. The particles of soot as ~o- uell as unburned particles of ~uel preSent are separated out on the rotating drum 5 and burned there (with suita~le developme~t of the ~all 9 of the drum 5 of a catalytically active material) catalytically ~nd/or in particular after ~he slinging-off f~om ~he rotating drum 5 in the part of the inner spac~ 2 surrounding this drum by the feeding of thermal energy, the inner space 2 ~hen being developed as com~us~ion chamber of an af~erburne~.
Furthermore, it is of course also possible to provide a different drive, for instance an exh~ust-gas drive, instead o o~ the electric motor 8.
~ist of Referenc~ Numbers 1 Housing 2 Inner space 3, 4 End wall Drum 5' Inner space 6 Bottom 7 Shaft 8 Electric motor 9 Wall lo End ll Ring 12 Auxiliary chamber 13 Connection 14 Upper uall Pipe length 16 End 17 Bottom wall 18 Connection 19, 20 Side wall 21 Connection A - c Flow D Direction of rotation L Longitudinal axis M Central pl ane
Claims (14)
1. A devise for removing oil and/or soot and/or foreign particles from a stream of air, gas and/or vapoor, comprising at least one drum which is arranged in a closed chamber and can be driven in rotation around longitudinal axis or drum axis by a drive, the drum forming an inner chamber and being provided at least on a part of its wall which surrounds the drum axis and limits the inner chamber with, in the manner of a screen, a plurality of openings through which the individual spaces formed by the inner chamber of the drum and by the part of the chamber surrounding the drum are in communication; by at least one first connection, debouching in one of the individual spaces, for the feeding of the stream of air, gas and/or vapor; and by a second connection, debouching into the other individual space, for the discharge of a purified stream of air, gas and/or vapor and/or a stream of air, gas and/or vapor from which oil and/or soot has been removed.
2. A device according to Claim 1, wherein said first connection debouches into the individual space surrounding the drum and the second connection debouches into the inner space of the drum.
3. A device according to Claim 1, wherein the wall of the drum is of conical or frustoconical development.
4. A device according to Claim 1, wherein the drum has a bottom which is arranged perpendicular to the longitudinal axis and an open end opposite said bottom, and that a connection, preferably said second connection, extends through said open end into the inner space of the drum.
5. A device according to Claim 4, wherein the connection which extends into the drum is formed by a length of pipe which is coaxial to the longitudinal axis of the drum.
6. A device according to Claim 4, wherein the connection which extends into the drum forms an opening which is directly adjacent the bottom of the drum or is spaced from the bottom by a distance which is substantially smaller than the axial length of the drum.
7. A device according to Claim 1, wherein there is provided at least one third connection for the feeding of fresh and/or cool air into the inner space and/or onto the wall of the drum.
8. A device according to Claim 7, wherein said at least one third connection serves for the feeding of the fresh and/or cool air to the open end of the drum.
9. A device according to Claim 7, wherein there is provided an auxiliary chamber into which one end, preferably an open end, of the drum extends and to which the fresh or cool air is fed via said at least one connection.
10. A device according to Claim 1, wherein the device is formed as an oil separator on a bottom surface of the chamber, a fourth connection being provided for the discharge of oil condensate.
11. A device according to Claim 1, wherein the chamber which receives the drum has a cross section other than circular, for instance a cross section corresponding to a polygon, in cross-sectional planes perpendicular to the axis of rotation of the drum.
12. A device according to Claim 11, wherein the chamber has a square, rectangular or hexagonal cross section.
13. A device according to Claim 1, wherein baffles which counteract a rotary movement of the air are provided within the chamber.
14. A device according to Claim 1, wherein an exhaust-gas drive is provided for the driving of the drum.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4431906.1 | 1994-09-08 | ||
| DE4431906 | 1994-09-08 | ||
| DEP4435273.5 | 1994-10-01 | ||
| DE4435273 | 1994-10-01 | ||
| DE19520533A DE19520533A1 (en) | 1994-09-08 | 1995-06-03 | Device for separating oil and / or soot and / or foreign matter from an air, gas and / or steam stream |
| DE19520533.2 | 1995-06-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2175918A1 true CA2175918A1 (en) | 1996-03-14 |
Family
ID=27206741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002175918A Abandoned CA2175918A1 (en) | 1994-09-08 | 1995-08-31 | Device for removing oil, soot and/or other foreign matter from an air, gas and/or steam flow |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0729376B1 (en) |
| JP (1) | JPH09506824A (en) |
| AT (1) | ATE180987T1 (en) |
| CA (1) | CA2175918A1 (en) |
| ES (1) | ES2135081T3 (en) |
| WO (1) | WO1996007464A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29605508U1 (en) * | 1995-09-18 | 1996-06-20 | Franz Eder Maschinenfabrik GmbH & Co KG, 84048 Mainburg | Filter or catalyst device |
| FR3071418B1 (en) * | 2017-09-26 | 2019-09-13 | Safran Helicopter Engines | PIECE FOR TURBOMACHINE CENTRIFUGAL DEGREYER AND PROCESS FOR MANUFACTURING THE SAME |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR458037A (en) * | 1912-07-27 | 1913-10-01 | Eugene Francois Cote | Dust and fume centrifuge filter |
| US2994406A (en) * | 1958-06-13 | 1961-08-01 | Wesley C L Hemeon | Cleanable gas filter |
| GB983989A (en) * | 1961-12-18 | 1965-02-24 | Sugar Manufacturers Supply Com | Improvements in or relating to filtering |
| DE1186412B (en) * | 1962-11-27 | 1965-01-28 | Westfalia Dinnendahl Groeppel | Device for separating solids and liquids by means of centrifugal force |
| DE1909493A1 (en) * | 1969-02-26 | 1970-09-10 | Sfb Special Filterbau M Ofner | Centrifugal filter |
| DE2235789C3 (en) * | 1972-07-21 | 1974-12-12 | Polysius Ag, 4723 Neubeckum | Vertical-axis circulating air wind sifter |
| BE901542A (en) * | 1985-01-22 | 1985-05-17 | Fenaux Lucien | DEVICE FOR TREATING FLUE GASES. |
| DE3702765A1 (en) * | 1987-01-30 | 1988-08-11 | Kessler & Luch Gmbh | Oil mist eliminator |
-
1995
- 1995-08-31 AT AT95929725T patent/ATE180987T1/en not_active IP Right Cessation
- 1995-08-31 JP JP8509106A patent/JPH09506824A/en not_active Ceased
- 1995-08-31 ES ES95929725T patent/ES2135081T3/en not_active Expired - Lifetime
- 1995-08-31 CA CA002175918A patent/CA2175918A1/en not_active Abandoned
- 1995-08-31 WO PCT/DE1995/001170 patent/WO1996007464A1/en active IP Right Grant
- 1995-08-31 EP EP95929725A patent/EP0729376B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| ATE180987T1 (en) | 1999-06-15 |
| ES2135081T3 (en) | 1999-10-16 |
| EP0729376B1 (en) | 1999-06-09 |
| JPH09506824A (en) | 1997-07-08 |
| EP0729376A1 (en) | 1996-09-04 |
| WO1996007464A1 (en) | 1996-03-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5507268A (en) | Device for removing oil and/or soot from a stream of air, gas and or vapor, particularly for use in combustion engines | |
| US8210135B2 (en) | Crankcase ventilation system | |
| GB2155998A (en) | Crankcase ventilating system and method of removing oil mist from gas in the system | |
| US3246639A (en) | Smog control device | |
| US2906252A (en) | Crankcase ventilating system for internal combustion engines | |
| US3458297A (en) | Liquid dispersion means | |
| US4142487A (en) | Two-stroke piston engine | |
| US3073293A (en) | Crankcase vapor recycle system | |
| CA2175918A1 (en) | Device for removing oil, soot and/or other foreign matter from an air, gas and/or steam flow | |
| US3045411A (en) | Liquid and gas separators | |
| US2232413A (en) | Internal combustion engine | |
| JPH11141325A (en) | Oil reflux device for blowby gas | |
| JPS6244086Y2 (en) | ||
| SU1582974A3 (en) | Arrangement for removing water and/or other volatile impurities from lubricant for ic-engines | |
| US3618577A (en) | Separator for fuel-air induction system | |
| US4100905A (en) | Fuel vaporizer | |
| US1856527A (en) | Air cleaner, crankcase ventilating means and the like | |
| JPH09250325A (en) | Engine with breather device | |
| JP3154004B2 (en) | Breather device for internal combustion engine | |
| US1683039A (en) | Robert k | |
| GB2118861A (en) | Internal combustion engine filter system | |
| KR20110062203A (en) | Oil separator | |
| US1981876A (en) | Charge forming and distributing manifold | |
| JPS5819306Y2 (en) | Drain device for air cooler in supercharged internal combustion engine | |
| JPS6211306Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued | ||
| FZDE | Discontinued |
Effective date: 19990406 |