WO1982001325A1 - Epurateur d'air pulse autonettoyant - Google Patents

Epurateur d'air pulse autonettoyant Download PDF

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Publication number
WO1982001325A1
WO1982001325A1 PCT/US1981/001347 US8101347W WO8201325A1 WO 1982001325 A1 WO1982001325 A1 WO 1982001325A1 US 8101347 W US8101347 W US 8101347W WO 8201325 A1 WO8201325 A1 WO 8201325A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
housing
filter
particulate matter
cleaner according
Prior art date
Application number
PCT/US1981/001347
Other languages
English (en)
Inventor
Co Inc Donaldson
George A Copley
Gary R Gillingham
Original Assignee
Co Inc Donaldson
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US06/195,873 external-priority patent/US4331459A/en
Application filed by Co Inc Donaldson filed Critical Co Inc Donaldson
Priority to BR8108834A priority Critical patent/BR8108834A/pt
Publication of WO1982001325A1 publication Critical patent/WO1982001325A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
    • B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
    • B01D46/121—V-type arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
    • B01D46/71—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air

Definitions

  • This invention relates to the field of air cleaning by removal of particulate matter such as dust, particularly in installations requiring treatment of large volumes of air.
  • One aspect of the present invention relates to an air cleaner with pulse jet cleaning in which the filter medium is positioned -and the gas flow is directed so that particulate matter initially impinging on the filter medium is enabled and impelled to "migrate" across the medium during successive cleaning pulses and to ultimately reach a scavenge site where it can be discharged from the cleaner, always without interruption of the cleaning operation.
  • an air cleaner apparatus for removing particulate matter from air comprising a housing having an unfiltered air inlet and a filtered air outlet, a filter assembly within the housing including a filter having a filtered air side and an unfiltered air side, the filtered air side being isolated from unfiltered air, inertial precleaner means located proximate the unfiltered air side and defining an intermediate space therebetween, the precleaner means for reversing the flow of unfiltered.air thereby inertially separating particulate matter, reverse pulse cleaning means for intermittently directing a re ⁇ verse flow of air toward the filtered side of the filter so that particulate matter will become dislodged from the unfiltered air side and enter the intermediate space, closure means responsive to the reverse flow of air for blocking passages of the reverse flow through the inertial precleaner means, and an outlet means in said intermedate space for exhausting the reverse flow of air so that particulate matter in the flow will not be reentrained on the unfiltered
  • FIGURE 1 is a plan view of an air cleaner accor ⁇ ding to the invention, parts being broken away;
  • FIGURE 2 is a view generally in vertical section looking along the line 2-2 of FIGURE 1;
  • FIGURE 3 is a view in perspective of a filter assembly used in the air cleaner of FIGURES 1 and 2;
  • FIGURE 4 is a view in horizontal section looking along the line 4-4 of FIGURE 3;
  • FIGURE 5 is a somewhat schematic view in section of a second embodiment of the invention.
  • FIGURE 6 is a schematic wiring diagram
  • FIGURE 7 is a plan view of an alternative em- bodiment of an air cleaner according to the invention, with parts broken away and shown in section;
  • OMPI _ FIGURE 8 is a view generally taken in vertical section looking along line 8-8 of FIGURE 7;
  • FIGURE 9 is an elevational view looking from line 9-9 of FIGURE 7;
  • FIGURE 10 is an enlarged fragmentary sectional view of a filter assembly as seen from line 10-10 of FIGURE 8;
  • FIGURE 11 is a view generally in end elevation looking from line 11-11 of FIGURE 10
  • FIGURE 12 is a view generally taken in section looking along line 12-12 in FIGURE 10;
  • FIGURE 13 is an enlarged view of a portion of the louvered structure shown in FIGURE 10;
  • FIGURE 14 is a plan view of an alternate lou- vered portion of a filter assembly used in the air cleaner in FIGURES 7 .and 8;
  • FIGURE 1'5 is -an elevational view seen from line 15-15 of FIGURE 14;
  • FIGURE 16 is a fragmentary sectional view taken along -line 16-16 of FIGURE 14;
  • FIGURE 17 is a schematic wiring diagram
  • FIGURE 18 is a view similar to FIGURE 15 with portions broken away showing a further embodiment of the present invention
  • FIGURE 19 is a portion of a view similar to
  • FIGURE 7 showing a further embodiment of the overall air cleaner according to the invention.
  • FIGURE 20 is a view similar to FIGURE 13 showing an alternative embodiment of the louvered structure;
  • FIGURE 21 is a sectional view taken along line
  • FIGURE 22 is a sectional view similar to a portion of FIGURE 10, but showing the alternate form of FIGURES 19 and 20. Detailed Description of the Invention
  • FIGURES 1 and 2 The embodiment of the invention shown in FIGURES 1 and 2 comprises an airtight housing 20 having a remov- able or hinged top 21, a bottom 22, opposite sides 23 and 24, opposite ends 25 and 26, and a vertical partition 27 which divides the housing into a larger chamber 30 and a smaller chamber 31.
  • Bottom 22 is configured to provide a scavenge chamber 32 to which there is connected a scavenge duct 33.
  • An inlet 34 for air to be cleaned is provided in top 21 near end 25, which is closed, and a draft opening 35 may be provided in top 21 opening into chamber 30 near partition 27.
  • An outlet 36 for cleaned air is formed in end 26.
  • Partition 27 is provided with a plurality of apertures 37, 38, 40 so that a path for air flow extends from inlet 34 through chamber 30, apertures 37, 38 and 40, and chamber 31 to outlet 36, as suggested by the arrows in FIGURE 2.
  • a plurality of filter assemblies 41, 42 and 43 are mounted on partition 27 to close openings 37, 38, and 40.
  • an upper rod 180 and a lower rod 181 are secured at first ends to partition 27, between filters 41 and 42, and a second pair of rods are similarly secured between filters 42 and 43.
  • a clamping frame 182 comprising upper and lower horizontal channels 183 and 184 and vertical legs 185 and 186 is secured to the rods by nuts 187.
  • Pressure pads 190 are provided between the channels and the filters.
  • Legs 185 and 186 are extended downward to rest on bottom 22.
  • Deflectors 191 of sheet metal are secured to extend vertically between the rods by clips 192, for a purpose presently to be described.
  • the filter assemblies are alike, and assembly 41 is shown in FIGURES 3 and 4 to comprise first and second flat filters 44 and 45 mounted on edge in a frame 46 with a tapering space 47 between them to converge toward a first, closed end 50 of the frame.
  • the opposite end 51 of the frame is open, and is dimensioned to be seated against one of the openings in partition 27 and be sealed with respect thereto by a suitable gasket 52.
  • a top 53 and bottom 54 of frame 46 are closed, and a pair of horizontal partitions 55 and 56 provide strength and rigidity to the assembly, and divide the tapering space 47 between the filters into an upper chamber 60, a middle chamber 61, and a lower chamber 62.
  • Each " of filters 44 and 45 is made up of a body of pleated paper filter medium 63, contained between inner and outer sheets 64 and 65 of perforated metal or similar material, the whole being unified by stripes 66 of plastic or cement.
  • the pleats of the filter medium run verti ⁇ cally, as is shown. It will be apparent that assemblies 41, 42, and
  • chamber 43 divide chamber 30 into first and second portions of irregular outline, the first portion being that space outside of the filter assemblies, and the latter portion being the sum of the tapering spaces inside the filter assemblies.
  • a horizontal partition 70 is provided in chamber 31, so that the space 71 below the partition comprises a reservoir for air for cleaning the filter, which air is supplied through a duct 72.
  • a number of standpipes 73, 74, 75 equal to the number of filter assemblies extend upwardly from partition 70, each supplying air from the chamber to a number of valves equal to the number of chambers in the tapered space 47 of a filter assembly.
  • standpipe 73 is connected to and supports an upper valve 76, a center valve 77, and a lower valve 78.
  • valves connect with nozzles 80, 81, and 82 respectively, and are positioned so that the nozzles are directed centrally into chambers 60, 61, and 62 of the apposed filter assembly 42.
  • Standpipes 74 and 75 are similarly equipped with valves and nozzles, of which valves 83 and 84 and nozzles 85 and 86 are shown in FIGURE 2.
  • valves 75, 76, etc. are normally closed, solenoid valves actuated electrically at brief intervals to emit pulses of air through the associated nozzles 80, 81, etc.
  • valves are energized so that jets are directed simultaneously into the upper chambers of the filter assemblies, then into the center ch-ambers, and then into the bottom chambers, in a repeat ⁇ ing cycle: the length of the cycle and the lengths of the pulses within the cycle and their spacing may be varied at the will of the operator, to maximize the cleaning effect in dependence on the nature of the particulate matter be ⁇ ing removed.
  • top 20 is opened and a pluraltiy of clean filter assemblies 41, 42, and 43 are inserted and secured in sealed relation to partition 27.
  • Top 21 is closed, an inlet duct for air to be cleaned is connected at 34, an outlet duct for clean air is connected at 36, a source of air under negative pressure is connected to duct 33, and a source of air under positive pressure is con ⁇ nected to duct 72.
  • electrical energy is supplied to timer 93, and airflow through the cleaner is started, ordinarily by a pump or fan connected to outlet 36.
  • Timer 93 operates to supply a pulse of air from reservoir 71 through standpipes 73, 74, and 75 and valves 83, 76, and 84 to upper nozzles 85, 80, and 86, which project jets of air past diffusers 90, 91, and 92 into the upper cham- bers 60 of the filter assemblies, interrupting the flow of air inwards through the filters and momentarily dischar ⁇ ging dirt particles from the outer surfaces of the fil ⁇ ters.
  • Deflectors 191 are provided to prevent particles expelled from one of the filters from being forcibly jetted across the space between filters to impinge on the adjacent filter.
  • the particles start to descend by grav ⁇ ity into the normal airflow below, but upon termination of the cleaning pulses normal air flow is resumed and the particles are again brought into contact with the filters, at sites lower and nearer to partition 27 than initially. Pulses of air are then supplied in sequence to the center .and the lower ch-a bers of the filter assemblies, again dislodging particles of dirt and enabling them to move. The downward movement of particles near partition 27 is facilitated if a small qUa-antity of ambient air is admitted at draft opening 35.
  • the dust particles partake of a motion of migration across the surfaces of the filters and ultimately reach scavenge opening 32, from which they are extracted by duct 33, together with a small qu-antity of the air entering at 34 and 35.
  • the volume of ch-amber 71 was one cubic foot, cleaning air was supplied at 100 pounds per square inch, and the pressure dropped to 65 pounds per square inch during the pulses. These dimen ⁇ sions will naturally vary with the size of the installa ⁇ tion: the one referred to had a capacity of 8,000 cubic feet per minute of air at inlet 34.
  • FIGURE 6 A second embodiment of the invention is shown somewhat schematically in FIGURE 6 to comprise a housing 100 divided by a partition 101 into a lower, larger cham ⁇ ber 102 and an upper, smaller chamber 103. Air to be cleaned is admitted to the housing at an inlet 104 near the bottom, and cleaned air is taken from the cleaner at an outlet 105, in its top. A reservoir 106 is supplied with air for the cleaning function by a duct 107, and standpipes, valves, nozzles, and deflectors may be sup ⁇ plied as described above. Filter assemblies such as assembly 110 are supported on and sealed to partition 101, and may be as shown in FIGURES 3 and 4.
  • Housing 100 is provided with a vertical parti ⁇ tion 113 to define a scavenge plenum 114, connected to a scavenge duct 115, and a plurality of apertures 116, 117, 120, and 121 provide communication between chamber 102 and plenum 114. Operation
  • FIGURES 7-22 Alternate embodiments of the present invention including an integral precleaner are shown in FIGURES 7-22.
  • the embodiment shown in FIGURES 7-13 comprises an airtight housing 220 having a hinged section 222 for intake of unfiltered air which pivots on hinge 224 and is held in a closed position by locking means 226.
  • FIGURE 7 shows left wall 228 and right wall 230 while FIGURE 8 shows the top wall 232 and the bottom wall 234.
  • Portions 236 and 238 form the side and bottom walls of the hinge section 222.
  • Within housing 220 are located a plurality of filter assemblies 240, 242, and 244.
  • the filter assem ⁇ blies are held in housing 220 by bolts 246_and plates 250 and 252 at their respective ends.
  • Plate 252 includes apertures 254, 256, and 258.
  • pulse jets 260a-c, 262a-c, -and 264a-c Located proximate apertures 254-258 are pulse jets 260a-c, 262a-c, -and 264a-c. Their relative orientation can best be seen in FIGURE 9.
  • Each pulse jet 260-264 is designed to supply a high velocity stream of air for reverse pulse cleaning of the filter assemblies.
  • the pulse jets are of the same general nature as those in the earlier embodiment designated generally by the numbers 73, 76, and 80; however, a diffuser 90 used in the previous embodiment is optional.
  • the pulse jets are connected to conduits 266, 268, and 270, which direct the air therethrough-
  • Hinge section 222 includes a plurality of pas ⁇ sageways 272, 274, 276 which are formed of a plurality of partitions 278, 280, 282, and 284, and which are curved as shown in FIGURE 8..
  • the conduits are aligned so as to provide a flow of unfiltered air to the filter assemblies, as will be e.xplained hereinafter.
  • FIGURES 10-12 Basic components of the filter assemblies 240-244 are the same as assembly ' 41 shown in FIGURES 3 and 4 of the previous embodiment. To the extent variations are not explained herein, reference should be had to those figures for a detailed description.
  • Filter assembly 240 is shown in FIGURES 10-12 to comprise first and second flat filters 286 and 288 (each having a fil ⁇ tered and unfiltered face 287a and 287b respectively) mounted on edge in a frame 290 with a tapering space 292 between them to converge toward a first closed end 294.
  • the opposite end 296 is opened and is dimensioned to be seated against one of the openings 254-258 in plate 252 preferably with a gasket seal 298 to ensure an airtight connection.
  • the top 300 and bottom 302 of frame 290 are closed, thereby enclosing the "filtered" side of the filter assembly, and a pair of horizontal partitions 304 and 306 provide strength and rigidity to the assembly as well as dividing space 292 into an upper chamber 292a, middle chamber 292b, and lower chamber 292c.
  • Each of filters 296 and 288 is made up of a body of pleated paper filter medium 306 contained between inner and outer sheets 308 and 310 of perforated metal or similar material.
  • Surrounding frame 290 is the precleaner enclo ⁇ sure 312 which surrounds frame 290 on face 287a. Between enclosure 312 and frame 290 there is defined an inter ⁇ mediate space 314..
  • Enclosure 312 includes two louvered panels 316a and 316b which are mirror images of each other and which -are joined by a second end panel 318. The remaining portions of enclosure 312 abut frame 290 at gasket 298.
  • Louvered panels 316a and 316b can be more clear- ly seen in FIGURE 13 of the drawings. In view of the sym- metry of panels 316a and 316b, only one will be discussed in detail.
  • Panel 316a includes a plurality of successive louvers 319 which are preferably stamped out of a planar sheet so as to create the overall shapes most clearly shown in FIGURE 12, having a rising portion 320 and side sloping portions 322.
  • the angle of inclination of portion 320 relative to the planar sheets 316a and 316b may be predetermined according to desire at manufacture to en ⁇ hance the precleaning effect according to particular gas densities and pressures to be applied to this device.
  • Each louver provides a passageway 324 between the intermediate chamber 314 and interior space 221 within housing 220.
  • Flaps 328 are preferably made of a flexible material, such as rubber or plastic, so that they may move from a position blocking the passageways 324 to a position extending into inter-
  • mediate space 314 thus opening the passageways in response to air pressure changes within the inte.rmediate space.
  • a scavenge outlet 332 is provided within the interior space 314, proximate end 318.
  • the scavenge outlets for each filter assembly 240-244 are collected by a manifold 334 as shown in FIGURE 7.
  • ports 336 are provided (as seen in FIGURE 7), which connect to manifold 338, which is ultimately ex ⁇ hausted to the outside environment.
  • This embodiment of the present invention effec ⁇ tively provides a dual filtration of uncleaned air and a superior means for reverse pulse cleaning of the filter element.
  • Uncleaned air enters con ⁇ duits 272-276 (FIGURES 7 and 8) and enters interior space 221 of housing 220.
  • Arrows 400 in conduits 272-276 indi ⁇ cate the direction of air flow.
  • the air within space 221 will travel in a direction generally toward ports 336.
  • louver 318 it will reverse direc ⁇ tions approximately 180° so as to enter passageway 324 as shown by arrows 402 in FIGURES 7 and 13.
  • flaps 328 are flexible and preferably slightly curved, they will tend to deflect the reverse flow in the direction of port 332 shown by arrows 412. In addition, their flexibility will tend to allow the formation of a greater curvature during the period when they are in the process of closing pas ⁇ sageway 324.
  • FIGURES 19-21 Alternate Embodiment
  • the e ' mbodiment disclosed in FIGURES 19-21 is considered the preferred embodiment at this time. Many of the features of this embodiment are identical with those of the previous embodiments and will therefore not be reiterated. The changes made in this embodiment over the previous embodiment are shown in FIGURES 19-21.
  • flaps 328a In order to simplify the air flow within intermediate chamber 314a as shown in FIGURE 20 and eliminate port 332, flaps 328a have been reversed (see FIGURE 13 for comparison). In FIGURE 20, it can be seen that each of flaps 328a is fixed to the next leading louver 319a so that the curl of the flap is reversed.
  • ports 416 at the ends of intermediate space 314a provide an outlet passage (FIGURE 21) for this flow of air which is col- lected in manifold 338a.
  • the direction of air flow is indicated by arrows 422 in FIGURE 21.
  • manifold 338 is the same manifold which collects the heavy particulate matter initially separated in space 221 during the first phase of precleaning.
  • Manifold 338a corresponds substantially to manifold 338 in the previous embodiment shown in FIGURE 7.
  • This embodiment of the present invention con- tains many of the features and elements shown in the previous two embodiments, and to the extent these features or elements are not repeated, they should be considered to be generally the same.
  • This embodiment allows for the mechanical ad- justment of the angle of inclination of the louvers either by mechanical or electromechanical means.
  • This adjust ⁇ ability feature may allow for the elimination of flaps 328 or 328a by mechanically closing louvers 319b (FIGURES 14, 15, and 18) at the -appropriate time.
  • the adjustability of louvers allows selection of the proper angle of inclination to most effectively separate particu ⁇ late matter of a particular mass carried in a gas at a particular air flow or pressure.
  • FIGURES 14 and 15 disclose the electromechanical version of this embodiment concerning filter assembly 240b.
  • each filter ' ssembly- has two louvered panels 316c and 316d which are symmetric with respect to each other.
  • the louvers 319b are closed at their lateral ends 502.
  • Each louver 319b includes a tubular member 503.
  • the members 503 are axially aligned with cooperating tubular members 505 fixedly carried by panels 316c and 316d.
  • Pivot rods 504 are received within respective cooperating tubular members 503 and 505 to pivotally mount louvers 319b.
  • a lever member 506 is attached to louver 319b and the pivot points each have members 506 pivot-ably attached to control arm 508.
  • Filter assembly 240b is divided into three sections, 261a, b, and c, as in the previous embodiment.
  • it is desir-able to reverse pulse cle-an each section sequentially a to c so as to cause particulate matter to migrate towards the bottom of the filter- (Note that FIGURE 14 is shown upsidedown. )
  • the louvers of each section are con ⁇ nected together by an individual connecting member 508.
  • Each connecting member is individually operated by rack and pinion systems 514, 516, and 518, respectively, one of which is shown in detail in FIGURE 16-
  • Three pivot rods 504 include pinion gears 520, 522, and 524, which have meshing engagement with a rack and roller system 526, 528, and 530 respectively.
  • the roller holds the rack in place while the rack engages the pinion gear.
  • the rack is adjustably connected to solenoid armatures 532, 534, and 538 by means of a fastener through a slot in a portion of the armature.
  • the armature resides within a solenoid 540, 542, and 544, which is adjustably affixed to the filter assembly by means of fasteners in a slotted base.
  • Pinion gear 520 is coupled to the louvers in filter section 261a by pin 546.
  • pinion gears 522 and 524 are coupled to the next succeeding filter sections by pins 548 and 550.
  • the remaining-pivot rods 504 do not rotate themselves and are fixed by pins 552, which pass through tubular members.505 and respective rods 504, as seen in FIGURE 14- This allows their respective louvers to rotate freely in response to movement of respective control rods 508.
  • the circuit shown in FIGURE 17, which is used to operate the pulsed jets, may also be coupled to solenoids 540-544 so as to electromagnetically close the proper sec ⁇ tion of louvers when reverse pulse jet cleaning is being undertaken.
  • the manually adjustable system 240c disclosed in FIGURE 18 is available.
  • Replacing solenoids 540-544 are plates 602-606, which have integral handles 608-612. The plate is pivoted on pivot points and locking nuts 614-18 as it controls the racks and pinions 626 ⁇ 30 as at 630-24.
  • Either the electromechanical or the simple mechanical louver-adjusting system disclosed above may be used in conjunction with either of the air flow patterns for the scavenging suggested in the previous embodiment. Therefore, in FIGURE 15, port 332 drawn in phantom lines may be eliminated and ports such as 416 in FIGURES 21, 22 substituted therefor.
  • FIGURE 17 discloses a simple schematic diagram of the preferred electrical hookup of solenoid valves 450, 452, and 454 which control pulse jets 260a, 262a, 264a (for 450), 260b, 262b, 264b (for 452) and 260c, 262c, 264c (for 454) and solenoids 540, 542, and 544 etc. which control the louvers.
  • Control box 456 would be in the nature of electronic or electromechanical sequencing means to operate the three parallel circuits in a desired se-: quence.
  • FIGURES 7-13 would be modified by removing the louvers and leaving the passageways and flaps. The device would then have the same reverse pulse cleaning and migra ⁇ tion properties of other embodiments described herein.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

Un appareil d'epuration d'air est decrit dans plusieurs modes de realisation. Dans un ensemble de modes de realisation on decrit un appareil d'epuration d'air (20) dans lequel l'air a epurer est aspire vers et au travers d'un filtre (41, 42, 43) dans une direction particuliere. Periodiquement, des impulsions inverses d'air sont dirigees au travers du filtre (41, 42, 43) dans une direction opposee au flux normal pour interrompre le flux d'air et pour deloger les particules recuperees du cote de l'air non filtre du filtre et pour permettre la migration des particules vers l'extremite inferieure aval du filtre (32). Selon d'autres modes de realisation de la presente invention, des dispositifs supplementaires de prenettoyage par inertie (319, 319a, 319b) sont montes a proximite du cote non filtre de chaque filtre pour separer par inertie les particules lourdes de l'air non epure avant la filtration. De plus, les dispositifs de prenettoyage par inertie 1319, 319a, 319b) peuvent avoir des moyens de fermeture (328a, 261a, 514) pouvant fonctionner pendant le nettoyage a impulsions inverses pour enlever les particules recuperees delogees et empecher de les entrainer de nouveau sur le filtre (286, 306).
PCT/US1981/001347 1980-10-10 1981-10-01 Epurateur d'air pulse autonettoyant WO1982001325A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BR8108834A BR8108834A (pt) 1980-10-10 1981-10-01 Purificador de ar pulsado com autolimpeza

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US195873 1980-10-10
US06/195,873 US4331459A (en) 1980-10-10 1980-10-10 Self-cleaning pulsed air cleaner
US24299881A 1981-03-12 1981-03-12
US06/242,999 US4359330A (en) 1980-10-10 1981-03-12 Self-cleaning pulsed air cleaner with integral precleaner
US242999810312 1981-03-12
US242998 1981-03-12

Publications (1)

Publication Number Publication Date
WO1982001325A1 true WO1982001325A1 (fr) 1982-04-29

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ID=27393528

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Application Number Title Priority Date Filing Date
PCT/US1981/001347 WO1982001325A1 (fr) 1980-10-10 1981-10-01 Epurateur d'air pulse autonettoyant

Country Status (8)

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JP (1) JPH035844B2 (fr)
AU (1) AU543692B2 (fr)
BR (1) BR8108834A (fr)
CA (1) CA1157783A (fr)
DE (1) DE3152436A1 (fr)
FR (1) FR2491770A1 (fr)
GB (1) GB2095577B (fr)
WO (1) WO1982001325A1 (fr)

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EP0109501A1 (fr) * 1982-10-22 1984-05-30 Kernforschungszentrum Karlsruhe Gmbh Filtre échangeable
WO1995007748A1 (fr) * 1993-09-17 1995-03-23 Donaldson Company, Inc. Groupe de nettoyage de l'air
EP1749562A2 (fr) * 1999-06-03 2007-02-07 Donaldson Company, Inc. Filtre remplacable en forme de V
WO2007149388A3 (fr) * 2006-06-19 2008-05-22 Donaldson Co Inc Systèmes de filtre à air à jet pulsé; composants; et, procédés
WO2009117579A1 (fr) * 2008-03-20 2009-09-24 Donaldson Company, Inc. Dispositif de nettoyage à jet d’air comprimé muni d’une soupape d’évacuation destinée à la poussière, et son procédé de fabrication
US9186612B2 (en) 2010-01-22 2015-11-17 Donaldson Company, Inc. Pulse jet air cleaner systems; evacuation valve arrangements; air cleaner components; and, methods
US9273648B2 (en) 2013-07-26 2016-03-01 Cnh Industrial America Llc Air intake system for a work vehicle
US9273649B2 (en) 2014-05-30 2016-03-01 Cnh Industrial America Llc System and method for controlling an electric aspirator of an air intake system for a work vehicle

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DE4211752C2 (de) * 1992-04-08 2001-02-22 Mahle Filtersysteme Gmbh Staubfilter für kontinuierliche vertikale Betriebsweise
DE4440489C2 (de) * 1994-11-12 1998-06-04 Inst Luft Kaeltetech Gem Gmbh Vorrichtung und Verfahren zur kombinierten Abscheidung von festen und gasförmigen Schadstoffen
JP6276831B2 (ja) * 2016-11-18 2018-02-07 アマノ株式会社 集塵装置
JP6840800B2 (ja) * 2019-08-23 2021-03-10 アマノ株式会社 集塵フィルタユニット及び集塵装置

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Cited By (22)

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EP0109501A1 (fr) * 1982-10-22 1984-05-30 Kernforschungszentrum Karlsruhe Gmbh Filtre échangeable
WO1995007748A1 (fr) * 1993-09-17 1995-03-23 Donaldson Company, Inc. Groupe de nettoyage de l'air
AU679264B2 (en) * 1993-09-17 1997-06-26 Donaldson Company Inc. Air cleaner construction
US5683479A (en) * 1993-09-17 1997-11-04 Donaldson Company, Inc. Air cleaner having scavenger arrangement
EP1749562A2 (fr) * 1999-06-03 2007-02-07 Donaldson Company, Inc. Filtre remplacable en forme de V
EP1749562A3 (fr) * 1999-06-03 2007-03-07 Donaldson Company, Inc. Filtre remplacable en forme de V
US8404021B2 (en) 2006-06-19 2013-03-26 Donaldson Company, Inc. Pulse jet air cleaner system; components; and, methods
US9757673B2 (en) 2006-06-19 2017-09-12 Donaldson Company, Inc. Pulse jet air cleaner systems, components, and, methods
WO2007149388A3 (fr) * 2006-06-19 2008-05-22 Donaldson Co Inc Systèmes de filtre à air à jet pulsé; composants; et, procédés
EP2708273A1 (fr) * 2006-06-19 2014-03-19 Donaldson Company, Inc. Systèmes de filtre à air à jet pulsé; composants et procédés
US9108135B2 (en) 2006-06-19 2015-08-18 Donaldson Company, Inc. Pulse jet air cleaner systems; components; and, methods
US10967320B2 (en) 2006-06-19 2021-04-06 Donaldson Company, Inc. Pulse jet air cleaner systems; components; and, methods
US10512870B2 (en) 2006-06-19 2019-12-24 Donaldson Company, Inc. Pulse jet air cleaner systems, components, and, methods
US7927396B2 (en) 2008-03-20 2011-04-19 Donaldson Company, Inc. Evacuation value arrangements; pulse jet air cleaner systems using same; and, method
US8262762B2 (en) 2008-03-20 2012-09-11 Donaldson Company, Inc. Evacuation valve arrangements; pulse jet air cleaner systems using same; and, methods
WO2009117579A1 (fr) * 2008-03-20 2009-09-24 Donaldson Company, Inc. Dispositif de nettoyage à jet d’air comprimé muni d’une soupape d’évacuation destinée à la poussière, et son procédé de fabrication
US9186612B2 (en) 2010-01-22 2015-11-17 Donaldson Company, Inc. Pulse jet air cleaner systems; evacuation valve arrangements; air cleaner components; and, methods
US9737837B2 (en) 2010-01-22 2017-08-22 Donaldson Company, Inc. Pulse jet air cleaner systems; evacuation valve arrangements; air cleaner components; and, methods
US10675578B2 (en) 2010-01-22 2020-06-09 Donaldson Company, Inc. Pulse jet air cleaner systems; evacuation valve arrangements; air cleaner components; and, methods
US11826691B2 (en) 2010-01-22 2023-11-28 Donaldson Company, Inc. Pulse jet air cleaner systems; evacuation valve arrangements; air cleaner components; and, methods
US9273648B2 (en) 2013-07-26 2016-03-01 Cnh Industrial America Llc Air intake system for a work vehicle
US9273649B2 (en) 2014-05-30 2016-03-01 Cnh Industrial America Llc System and method for controlling an electric aspirator of an air intake system for a work vehicle

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Publication number Publication date
FR2491770B1 (fr) 1983-12-02
DE3152436A1 (en) 1982-12-30
JPH035844B2 (fr) 1991-01-28
AU543692B2 (en) 1985-04-26
JPS57501522A (fr) 1982-08-26
FR2491770A1 (fr) 1982-04-16
DE3152436C2 (fr) 1990-05-17
GB2095577A (en) 1982-10-06
GB2095577B (en) 1985-02-27
CA1157783A (fr) 1983-11-29
BR8108834A (pt) 1982-08-24
AU7725081A (en) 1982-05-11

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