US3887341A - Method of and apparatus for automatic cleaning of an air filter - Google Patents

Method of and apparatus for automatic cleaning of an air filter Download PDF

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Publication number
US3887341A
US3887341A US323973A US32397373A US3887341A US 3887341 A US3887341 A US 3887341A US 323973 A US323973 A US 323973A US 32397373 A US32397373 A US 32397373A US 3887341 A US3887341 A US 3887341A
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Prior art keywords
filter
blower
air compartment
air
clean air
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Expired - Lifetime
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US323973A
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English (en)
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Hanspeter Sutter
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Luwa Ltd
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Luwa Ltd
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    • 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

Definitions

  • ABSTRACT A method of and apparatus for automatically cleaning an air filter wherein a working air current containing contaminants is guided in a predetermined direction through the air filter, then during the cleaning of the filter impinging the filter with a cleaning air current which flows in a direction opposite to the direction of flow of the working air current.
  • the present invention relates to a new and improved method of, and apparatus for, automatically cleaning an air filter.
  • this technique is capable of more or less completely cleaning the filter.
  • the cleaning action is insufficient, causing the suction installation to continuously operate uneconomically, although the cleaning operation is carried out periodically.
  • the method of this development for the automatic cleaning of an air filter contemplates guiding a working air current containing the contaminants in a predetermined direction, and the filter is impinged during the cleaning operation by a cleaning air current which flows in a direction opposite to the direction of flow of the working air current.
  • the cleaning air current acts at the filter in the form of shock or surge waves and the energy of the shock waves are derived from the working air current.
  • the method aspects of this development can be carried out in an extremely simple manner in that the cleaning operation can be directly derived from the normal filter operation. It is only necessary to have a sudden deflection of at least a part of that air which has already flown through the filter as working air.
  • shock wave is produced at the neighborhood of the filter, wherein it can be also advantageous if the degree of expansion thereof at the clean air side of the filter is maintained at a minimum or in fact can be influenced.
  • the invention is not only concerned with the aforementioned method aspects, but also relates to a new and improved construction of apparatus for the performance of the inventive method, and such apparatus comprises a filter housing, an air filter which divides the filter housing into a raw air compartment and a clean air compartment, an inlet opening connected to the raw air compartment, a blower or ventilator coupled by means of its suction side with the clean air compartment, and deflecting means which selectively connects the pressure side of the blower with the atmosphere or with the clean air compartments.
  • the inventive apparatus incorporates switching means in order to at least partially shut-off the suction side of the blower with respect to the clean air compartment and also incorporates means for simultaneously actuating the shut-off means together with the deflecting means.
  • the shut-off means are preferably formed by a flap member which is coupled with the deflecting means, and there is provided a common actuation element.
  • This actuation element is preferably a servomotor which can be actuated by compressed air and is capable of suddenly controlling or switching the shut-off means and deflecting means.
  • FIG. 1 illustrates in horizontal sectional view a first exemplary embodiment of a filter box or housing of a suction installation in the normal position of the equipment;
  • FIG. 2 illustrates the filter box or housing of FIG. 1 in the cleaning position of the equipment
  • FIGS. 3 and 4 depict a filter box or housing of a second exemplary embodiment of the invention in the operating positions corresponding to the showing of FIGS. 1 and 2 respectively.
  • reference numeral 10 designates a filter housing or box which forms a part of a not further illustrated suction installation of a textile machine.
  • This filter housing is coupled via a tubular conduit 12 with the suction nozzles are openings at such textile machine.
  • the tubular conduit or pipe 12 opens into a raw air compartment or chamber 14 provided within the filter housing 10.
  • a suction conduit 16 communicates with the raw air compartment 14, and this suction conduit 16, for instance together with a number of corresponding suction lines or conduits, is associated with a central fiber depository.
  • the further suction conduits or lines are likewise operatively coupled with a respective filter housing of a suction installation, each suction installation servicing a further textile machine or a further group of textile machines.
  • the raw air compartment 14 communicates with a clean air compartment through the agency of an air filter 18, and the clean air compartment 20 is located at the suction side of a blower or ventilator 22.
  • This blower or ventilator 22 is continuously driven by an electric motor 24 and communicates at its pressure side with an exhaust air chute or shaft 26 within the filter housing 10.
  • An outlet opening 28 at the filter housing connects the exhaust air shaft 26 with the atmosphere.
  • a wall and deflecting element 30, 32 which limits the exhaust air shaft 26 with respect to the air filter 18 and the clean air compartment 20 contains an opening 36 which can be closed by suitable closure means, here shown as a flap member 34.
  • This flap member 34 is closed in the work position of the filter housing, as same has been depicted in FIG. 1.
  • the clean air compartment 20 contains closure means, in the form of the shut-off flap member or valve 38, the center of rotation of which has been indicated by reference character 40, and which possesses a curved configuration in light of flow considerations.
  • closure means in the form of the shut-off flap member or valve 38, the center of rotation of which has been indicated by reference character 40, and which possesses a curved configuration in light of flow considerations.
  • a fiamp member 42 in the raw air compartment 14 at the region of the conduits 12 and 16 at the region of the conduits 12 and 16 there is arranged a fiamp member 42, the axis or point of rotation of which is located at the hinge location 44, and possesses two flap portions 46 and 48 which are arranged perpendicular to one another.
  • the flap member or flap 42 assumes a position where it shuts-off the suction conduit or line 16 with respect to the raw air compartment 14.
  • the flap member 38 in the work position depicted in FIG. 1, is located in its open position, as shown.
  • the air sucked-up by the blower 22 enters via the conduit 12 into the raw air compartment 14, flows through the filter 18 from its upstream side to its downstream side and thereafter through the clean air compartment 20, in order to be finally ejected into the atmosphere via the exhaust air shaft 26.
  • the sucked-up air is freed of its foreign particles or contaminants, such as fibers and dust, which then deposit upon the raw air side of the filter 18 and at that location gradually form a layer or covering.
  • the equipment has preferably associated therewith a control which, either as a function of time or as a function of the pressure differential between the raw air compartment 14 and the clean air compartment 20, triggers the cleaning operation.
  • This control can also be part of the central suction installation and insures that all of the filters and filter housings will be cleaned in a predetermined sequence.
  • the flap member 38 In the closed position", the flap member 38 cooperates with an inner boundary 50 of the filter housing which is designed so as to be favorable to the flow, and moreover the flap member 38 bears against the deflecting body 32.
  • the flap member 38 Preferably simultaneously with the reversal of the flap members 34 and 38, there also occurs a reversing or switch-over of the flap member 42 out of the position depicted in FIG. 1 into the position depicted in FIG. 2.
  • the flap portion 46 there is interrupted the connection between the conduit 12 and the raw air compartment 14, whereas the flap portion 48 frees the connection between the raw air compartment 14 and the suction conduit 16.
  • its shorter flap portion 48 provides a throughflow or passage 52 which by-passes the conduit 12 with respect to the suction conduit 16; the suction operation at the textile machine, for this flap position, is assumed by the central suction installation via the suction conduit or line 16.
  • the sudden reversing or shifting of the flap member 34 out of the position of FIG. 1 into the position of FIG. 2 produces the result that the air, which has already passed through the filter 18 into the clean air compartment and moves through the blower, will be deflected at the flap member 34 and will flow along a bypass path of travel through the opening 36 as a shock wave against the filter l8 and impinges thereagainst from the clean air side i.e. downstream side thereof.
  • the shock wave can only expand to a limited extend since at the same time as there is a shifting or reversing of the flap member 34 the flap member 38 will be shifted or rocked into the closed position.
  • a further flap member 54 occurs in the illustrated exemplarly embodiment by means of the schematically depicted servomotor in the form for instance of a cylinder and piston arrangement, wherein as the actuation medium there can be used compressed air.
  • the piston is thus connected with the individual flaps via non-illustrated rods, merely schematically represented by the broken connection Iines.
  • Servo controls which can be used with the various embodiments of the invention herein disclosed are well known in the art so that no further consideration thereof need be given, particularly since the details thereof are not part of the invention' nor are such necessary for understanding the concepts thereof.
  • the air which is completely removed from the clean air compartment, and servingv to form the shock wave, is sufiicient for cleaning the filter 18, it can be advantageous for other reasons to support, during a brief period of time, a flow through the raw air compartment in the direction of the suction conduit or line 16 through the blower or ventilator 22.
  • the flap member 54 can free an opening 56 which communicates the suction side of the blower 22 with the atmosphere.
  • the flap member 38 for the cleaning of the filter 18 is not necessary under all cicumstances. It has been found to be extremely advantageous for a universally employed suction installation and the associated filter housings. In many situations, the flap member must not be completely closed upon initiating the cleaning operation, since it does not have any significance for the generation of the shock wave and only limits its propagation. Therefore it can be advantageous to adjustably limit the path through which the flap member 38 can move in the closing direction. As a result, the effectiveness of the shock wave at the filter 18 can be accommodated to the conditions prevailing at the suction installation and especially to the fiber material which is being processed by the textile machine.
  • shut-off means for the conduits 12 and 16 in such a manner that during a first phase of the cleaning operation the suction conduit 16 is shut-off with respect to the raw air compartment and only communicates with the conduit 12.
  • the raw air compartment could thereafter be connected with the suction conduit 16 for the withdrawal of the fibers which have been detached from the filter 18.
  • Suitable as the shut-off means which also would be capable of shutting-off the suction conduit 16 with respect to the raw air compartment during normal operation of the filter housing and to connect the conduit 12 with the raw air compartment, there could be employed for instance two independently actuatable flaps or flap members which would be pivotable about the pivot point 44.
  • the flap member corre sponding to the flap portion 48 would then only have the function of controlling the entry into the suction conduit 16 from the raw air compartment 14, whereas the flap member corresponding to the flap portion 46, in its one position, would shutoff the passage 52, whereas in the other position the connection between the conduit 12 and the raw air compartment 14 would be interrupted.
  • the shock wave may be prevented from propagating through the suction conduit or line 16.
  • the flap member 34 would not completely interrupt the connection between the pressure side of the blower 22 and the shaft 26. A part of the air conveyed by the blower therefore can escape into the shaft 26.
  • the transport air current in the conduit 16 can also be formed by a negative pressure flow which is produced by the blower 22. Maintaining such transport air current throughout a predetermined duration, which is sufficient for moving through the transport path, is facilitated by sucking-up ambient air through the opening 56.
  • a central fiber depository instead of having the contaminants delivered to a central fiber depository, such could also be conducted to a deposit location neighboring the filter housing, and which is then periodically emptied.
  • emptying can occur pneumatically or, if desired, also manually.
  • the filter housing such itself contains a deposit space or area which is formed by a dead-flow zone of the raw air compartment, or, however, the raw air compartment communicates via an opening which can be closed by a flap with a deposit compartment. In so doing, opening of the flap can occur, for instance, due to the excess pressure which prevails during the cleaning phase, against the action of a closing spring, provided that actuation thereof is not controlled by a suitable mechanism.
  • the suction operation at the therewith connected textile machine can also be maintained during the cleaning phase in that a suction air current is generated in the conduit 12 by means of an injector action.
  • the outlet opening of the raw air compartment in the conduit 16 can be assigned as an injector nozzle and there can be produced between the conduit 12 and the conduit 16 a tubular connection which surrounds the raw air compartment 14.
  • FIGS. 3 and 4 there is illustrated a further embodiment of the inventive filter housing or box.
  • the components of this embodiment which are the same as the embodiment of FIGS. 1 and 2 have employed therewith the same reference character, however in conjunction with a prime marking.
  • the filter housing or box 10' contains, apart from the filter 18, an auxiliary filter 19, which together with the first filter is located in a common plane and is separated therefrom by a pivot mounting 65 of a pair of flaps 67, 69.
  • the filter surface of the filter 18' is preferably larger than that of the auxiliary filter 19.
  • the filter 18' which is situated closer to the flap or flap member 48', during normal operation is impinged by air, whereas the auxiliary filter 19 which is situated closer to the conduit 12' is impinged by air during cleaning of the filter housing.
  • the flap 67 provides a connection between the conduit 12 and the filters l8 and 19 respectively which are to be impinged.
  • the flap or flap member 69 provides the connection between the filters 18 and 19 respectively and the blower or ventilator 22.
  • the flap member 48 can be opened by the shock wave against the action of a closure spring.
  • the excess pressure flow maintained by the blower 22', retains the flap member 48 open as long as the flap members 67, 69 and 34 assume the position depicted in FIG. 4.
  • Cleaning of the auxiliary filter 19 can occur manually at periodic intervals, wherein it should be noted however that the amount of fibers and dust which collects at such filter is relatively slight, corresponding to the relatively brief cleaning phases.
  • the outflowing air which moves through the exhaust air shaft 26 and 26 respectively can be delivered to an air conditioning installation which serves to climatize or air condition the room containing the textile machines.
  • a method for automatically cleaning an air filter comprising the steps of guiding a working air current containing contaminants in a predetermined direction of travel through the air filter from an upstream side to a downstream side thereof, suddenly deflecting a part of the working air current which has passed the downstream side of the filter to impinge the filter in the form of a shock wave at the downstream side of said filter, partially shutting off the working air current flowing on the downstream side of the filter and traveling in said predetermined direction, and deriving the energy of the shock wave from the working air current due to the sudden deflection of the part of the working air current.
  • step of suddenly deflecting a part of the working air current includes the step of directing the part of working air current along a direction of travel differing from said predetermined direction of travel and in a direction toward the downstream side of the air filter.
  • An apparatus for automatically cleaning an air filter comprising a filter housing, an air filter within the filter housing dividing said filter housing into a raw air compartment and a clean air compartment, an inlet opening communicating with the raw air compartment, a blower having a suction side and a pressure side, the suction side of the blower being in flow communication with the clean air compartment, deflecting means mounted for movement between two positions, said deflecting means in one position communicating the pressure side of the blower with the atmosphere, said deflecting means in the other position communicating the pressure side of the blower with the clean air compartment and providing a bypass flow path from the pressure side of the blower to the clean air compartment during cleaning of the filter, means for at least partially shutting-off the suction side of the blower with respect to at least a portion of the clean air compartment, and means for simultaneously actuating the shut-off means together with the deflecting means.
  • shut-off means comprises a flap member arranged in the clean air compartment and adapted to be actuated to a filter cleaning position in which the clean air compartment is subdivided into two parts, wherein a first part of such clean air compartment is connected with the suction side of the blower and the second part thereof is connected via an opening with the pressure side of the blower, said opening being controlled by the deflecting means.
  • auxiliary filter having a clean air side and a raw air side, said clean air side of the auxiliary filter communicating with the first part of the clean air com partment, and means operatively associated with the raw air side of the auxiliary filter for communicating the flow of said inlet opening to said auxiliary filter.
  • An apparatus for automatically cleaning an air filter comprising a filter housing, an air filter within the filter housing dividing said filter housing into a raw air compartment and a clean air compartment, an inlet opening communicating with the raw air compartment, a blower having a suction side and a pressure side, the suction side of the blower being in flow communication with the clean air compartment, deflecting means mounted for movement between two positions, said deflecting means in one position communicating the pressure side of the blower with the atmosphere, said defleeting means in the other position communicating the pressure side of the blower with the clean air compartment and providing a by-pass flow path from the pressure side of the blower to the clean air compartment during cleaning of the filter, and means for at least partially shutting-off the suction side of the blower with respect to at least a portion of the clean air compartment.
  • An apparatus for automatically cleaning an air filter comprising a filter housing, an air filter having an upstream side and a downstream side with respect to a predetermined direction of travel of air through said air filter, said air filter being arranged within the filter housing and dividing the filter housing into a raw air compartment on the upstream side of the air filter and a clean air compartment on the downstream side of the air filter, an inlet opening communicating with the raw air compartment, an outlet opening communicating with the clean air compartment, means for forcing air to flow in said predetermined path of travel successively from the inlet opening through the raw air compartment and clean air compartment to the outlet opening, means for suddenly deflecting at least part of the air moving from said clean air compartment in the direction of the outlet opening in order to move said air along a by-pass of travel which differs from said predetermined path of travel and in a direction towards the downstream side of the filter and means for at least partially shutting off a portionof the clean air compartment from the downstream side of the filter.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US323973A 1972-01-20 1973-01-15 Method of and apparatus for automatic cleaning of an air filter Expired - Lifetime US3887341A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH81472A CH533464A (de) 1972-01-20 1972-01-20 Verfahren zum selbsttätigen Reinigen eines Luftfilters

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US (1) US3887341A (enrdf_load_stackoverflow)
JP (1) JPS4883461A (enrdf_load_stackoverflow)
AR (1) AR202093A1 (enrdf_load_stackoverflow)
BR (1) BR7300434D0 (enrdf_load_stackoverflow)
CH (1) CH533464A (enrdf_load_stackoverflow)
DE (1) DE2300462C2 (enrdf_load_stackoverflow)
ES (1) ES410986A1 (enrdf_load_stackoverflow)
FR (1) FR2168494B1 (enrdf_load_stackoverflow)
GB (1) GB1412329A (enrdf_load_stackoverflow)
HK (1) HK23978A (enrdf_load_stackoverflow)
IT (1) IT973068B (enrdf_load_stackoverflow)
ZA (1) ZA73168B (enrdf_load_stackoverflow)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3988127A (en) * 1975-05-07 1976-10-26 John Louis Schumann Electrostatic precipitator apparatus and method
US4134745A (en) * 1976-01-13 1979-01-16 Ltg Lufttechnische Gmbh Air cleaning apparatus
US4217116A (en) * 1978-05-30 1980-08-12 John Seever Method and apparatus for the cleaning of the surface of filter panels in a fluid passageway
US4300926A (en) * 1978-05-05 1981-11-17 Brooks Derrick W Separation apparatus
US4353721A (en) * 1980-05-09 1982-10-12 Zinser Textilmaschinen Gmbh Exhaust system for removing airborne particles from the vicinity of textile machinery
US4682993A (en) * 1983-12-16 1987-07-28 Storage Technology Corporation Fluid filter system with replaceable filter element
US4696225A (en) * 1985-06-07 1987-09-29 Daimler-Benz Aktiengesellschaft Air filter arrangement for vehicle air-conditioning system
US4838902A (en) * 1988-02-03 1989-06-13 The Boeing Company System and method for self-cleaning barrier-type air filter
US4864821A (en) * 1986-01-06 1989-09-12 Brehk Ventures Method and apparatus for filtering solid particulate matter from diesel engine exhaust
US4886532A (en) * 1987-05-07 1989-12-12 Zinser Textilmaschinen Gmbh Apparatus for removing and filtering dirty air from equipment
US6342083B1 (en) * 1999-02-26 2002-01-29 W. Schlafhorst Ag & Co. Filter device for a cheese-producing textile machine
US20040177757A1 (en) * 2003-03-14 2004-09-16 Bailey George R. Self-cleaning filter
US20060070360A1 (en) * 2004-10-05 2006-04-06 Caterpillar Inc. Filter service system and method
US20060070361A1 (en) * 2004-10-05 2006-04-06 Caterpillar Inc. Filter service system and method
US20060070359A1 (en) * 2004-10-05 2006-04-06 Caterpillar Inc. Filter service system
US20060144223A1 (en) * 2004-10-05 2006-07-06 Sellers Cheryl L Deposition system and method
US20060156919A1 (en) * 2004-10-05 2006-07-20 Sellers Cheryl L Filter service system and method
US20060191412A1 (en) * 2005-02-28 2006-08-31 Caterpillar Inc. Filter service system and method
US20060191246A1 (en) * 2005-02-28 2006-08-31 Caterpillar Inc. Filter service system and method
US20090000477A1 (en) * 2007-06-29 2009-01-01 Caterpillar Inc. Filter purge system utilizing impact wave generating device and vacuum source
US20090000478A1 (en) * 2007-06-29 2009-01-01 Caterpillar Inc. Filter purge system utilizing a reactive propellant
US20120296246A1 (en) * 2006-12-13 2012-11-22 Ikeler Timothy J High frequency chest wall oscillation system having valve controlled pulses
CN106041743A (zh) * 2016-05-31 2016-10-26 重庆博美涂装工程有限公司 便于清理研磨粉末的研磨装置
CN106225118A (zh) * 2015-06-02 2016-12-14 沃维克股份有限公司 用于净化室内空气和新鲜空气的空气净化器
CN107165871A (zh) * 2017-06-30 2017-09-15 广东美的环境电器制造有限公司 无叶风扇及其除尘控制方法和装置
WO2018093879A1 (en) * 2016-11-15 2018-05-24 Robovent Products Group, Inc. Remote monitoring of air filter systems

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2282482C1 (ru) * 2005-05-25 2006-08-27 Государственное образовательное учреждение высшего профессионального образования Воронежская государственная технологическая академия Фильтр для очистки гетерофазных систем

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1729527A (en) * 1926-08-04 1929-09-24 Harry W Titgen Dust collector
US2203776A (en) * 1936-11-24 1940-06-11 Danils Nils Air filtering apparatus
US3011205A (en) * 1959-07-08 1961-12-05 Parks Cramer Co Collection chamber for lint, dust and the like
US3150415A (en) * 1960-07-27 1964-09-29 Whitin Machine Works Dust removing system for carding machines

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US24521A (en) * 1859-06-21 pratt
US2732912A (en) * 1956-01-31 Dust collector
USRE24521E (en) * 1958-08-19 young
US3383840A (en) * 1966-05-10 1968-05-21 Cottrell Res Inc Dust collecting system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1729527A (en) * 1926-08-04 1929-09-24 Harry W Titgen Dust collector
US2203776A (en) * 1936-11-24 1940-06-11 Danils Nils Air filtering apparatus
US3011205A (en) * 1959-07-08 1961-12-05 Parks Cramer Co Collection chamber for lint, dust and the like
US3150415A (en) * 1960-07-27 1964-09-29 Whitin Machine Works Dust removing system for carding machines

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3988127A (en) * 1975-05-07 1976-10-26 John Louis Schumann Electrostatic precipitator apparatus and method
US4134745A (en) * 1976-01-13 1979-01-16 Ltg Lufttechnische Gmbh Air cleaning apparatus
US4300926A (en) * 1978-05-05 1981-11-17 Brooks Derrick W Separation apparatus
US4217116A (en) * 1978-05-30 1980-08-12 John Seever Method and apparatus for the cleaning of the surface of filter panels in a fluid passageway
US4353721A (en) * 1980-05-09 1982-10-12 Zinser Textilmaschinen Gmbh Exhaust system for removing airborne particles from the vicinity of textile machinery
US4682993A (en) * 1983-12-16 1987-07-28 Storage Technology Corporation Fluid filter system with replaceable filter element
US4696225A (en) * 1985-06-07 1987-09-29 Daimler-Benz Aktiengesellschaft Air filter arrangement for vehicle air-conditioning system
US4864821A (en) * 1986-01-06 1989-09-12 Brehk Ventures Method and apparatus for filtering solid particulate matter from diesel engine exhaust
US4886532A (en) * 1987-05-07 1989-12-12 Zinser Textilmaschinen Gmbh Apparatus for removing and filtering dirty air from equipment
US4838902A (en) * 1988-02-03 1989-06-13 The Boeing Company System and method for self-cleaning barrier-type air filter
US6342083B1 (en) * 1999-02-26 2002-01-29 W. Schlafhorst Ag & Co. Filter device for a cheese-producing textile machine
US20040177757A1 (en) * 2003-03-14 2004-09-16 Bailey George R. Self-cleaning filter
US6840974B2 (en) 2003-03-14 2005-01-11 Spirent Communications Of Rockville, Inc. Self-cleaning filter
US7384455B2 (en) 2004-10-05 2008-06-10 Caterpillar Inc. Filter service system and method
US20090000471A1 (en) * 2004-10-05 2009-01-01 Caterpillar Inc. Filter service system and method
US20060070359A1 (en) * 2004-10-05 2006-04-06 Caterpillar Inc. Filter service system
US20060144223A1 (en) * 2004-10-05 2006-07-06 Sellers Cheryl L Deposition system and method
US20060156919A1 (en) * 2004-10-05 2006-07-20 Sellers Cheryl L Filter service system and method
US8608834B2 (en) 2004-10-05 2013-12-17 Caterpillar Inc. Filter service system and method
US8252093B2 (en) 2004-10-05 2012-08-28 Cheryl Lynn Sellers Filter service system and method
US20060070360A1 (en) * 2004-10-05 2006-04-06 Caterpillar Inc. Filter service system and method
US7410529B2 (en) 2004-10-05 2008-08-12 Caterpillar Inc. Filter service system and method
US20060070361A1 (en) * 2004-10-05 2006-04-06 Caterpillar Inc. Filter service system and method
US7419532B2 (en) 2004-10-05 2008-09-02 Caterpillar Inc. Deposition system and method
US7462222B2 (en) 2004-10-05 2008-12-09 Caterpillar Inc. Filter service system
US20060191246A1 (en) * 2005-02-28 2006-08-31 Caterpillar Inc. Filter service system and method
US7410521B2 (en) 2005-02-28 2008-08-12 Caterpillar Inc. Filter service system and method
US20060191412A1 (en) * 2005-02-28 2006-08-31 Caterpillar Inc. Filter service system and method
US9572743B2 (en) * 2006-12-13 2017-02-21 Hill-Rom Services Pte Ltd. High frequency chest wall oscillation system having valve controlled pulses
US20120296246A1 (en) * 2006-12-13 2012-11-22 Ikeler Timothy J High frequency chest wall oscillation system having valve controlled pulses
US8142552B2 (en) 2007-06-29 2012-03-27 Caterpillar Inc. Filter purge system utilizing a reactive propellant
US8157897B2 (en) 2007-06-29 2012-04-17 Caterpillar Inc. Filter purge system utilizing impact wave generating device and vacuum source
US20090000477A1 (en) * 2007-06-29 2009-01-01 Caterpillar Inc. Filter purge system utilizing impact wave generating device and vacuum source
US20090000478A1 (en) * 2007-06-29 2009-01-01 Caterpillar Inc. Filter purge system utilizing a reactive propellant
CN106225118A (zh) * 2015-06-02 2016-12-14 沃维克股份有限公司 用于净化室内空气和新鲜空气的空气净化器
CN106225118B (zh) * 2015-06-02 2019-06-04 沃维克股份有限公司 用于净化室内空气和新鲜空气的空气净化器
CN106041743A (zh) * 2016-05-31 2016-10-26 重庆博美涂装工程有限公司 便于清理研磨粉末的研磨装置
WO2018093879A1 (en) * 2016-11-15 2018-05-24 Robovent Products Group, Inc. Remote monitoring of air filter systems
CN107165871A (zh) * 2017-06-30 2017-09-15 广东美的环境电器制造有限公司 无叶风扇及其除尘控制方法和装置
CN107165871B (zh) * 2017-06-30 2019-07-26 广东美的环境电器制造有限公司 无叶风扇及其除尘控制方法和装置

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FR2168494B1 (enrdf_load_stackoverflow) 1978-02-10
ZA73168B (en) 1973-09-26
JPS4883461A (enrdf_load_stackoverflow) 1973-11-07
FR2168494A1 (enrdf_load_stackoverflow) 1973-08-31
BR7300434D0 (pt) 1973-09-25
ES410986A1 (es) 1975-12-01
CH533464A (de) 1973-02-15
IT973068B (it) 1974-06-10
DE2300462A1 (de) 1973-07-26
GB1412329A (en) 1975-11-05
AR202093A1 (es) 1975-05-15
HK23978A (en) 1978-05-19
DE2300462C2 (de) 1981-09-17

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