WO2002034365A1 - Dispositif pour separer des particules contenues dans un fluide - Google Patents

Dispositif pour separer des particules contenues dans un fluide Download PDF

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Publication number
WO2002034365A1
WO2002034365A1 PCT/EP2000/010601 EP0010601W WO0234365A1 WO 2002034365 A1 WO2002034365 A1 WO 2002034365A1 EP 0010601 W EP0010601 W EP 0010601W WO 0234365 A1 WO0234365 A1 WO 0234365A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter element
particles
fluid
collecting chamber
outer filter
Prior art date
Application number
PCT/EP2000/010601
Other languages
German (de)
English (en)
Inventor
Günther Alexander REVERCHON
Petra Ehrecke
Original Assignee
Lundin Filter Gmbh
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
Application filed by Lundin Filter Gmbh filed Critical Lundin Filter Gmbh
Priority to PCT/EP2000/010601 priority Critical patent/WO2002034365A1/fr
Publication of WO2002034365A1 publication Critical patent/WO2002034365A1/fr

Links

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
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2411—Filter cartridges
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1658—Construction of outlets
    • A47L9/1666—Construction of outlets with filtering means
    • A47L9/1675—Construction of outlets with filtering means movable, revolving or rotary
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1683—Dust collecting chambers; Dust collecting receptacles
    • 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
    • B01D46/0039—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices
    • B01D46/0041—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding
    • B01D46/0045—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding by using vanes
    • 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
    • B01D46/0052—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with filtering elements moving during filtering operation
    • B01D46/0056—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with filtering elements moving during filtering operation with rotational movement
    • 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
    • B01D46/42—Auxiliary equipment or operation thereof
    • B01D46/48—Removing dust other than cleaning filters, e.g. by using collecting trays
    • 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
    • B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
    • B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
    • B01D46/64—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series arranged concentrically or coaxially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
    • B01D2279/55—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for cleaning appliances, e.g. suction cleaners

Definitions

  • the invention relates to a device for separating particles from a fluid.
  • the device is suitable for removing even the smallest particles from air and is suitable for use in a vacuum cleaner.
  • Cyclones can be mentioned as an example of devices in which particles are separated from air without being deposited on a filter element. Cyclones have an essentially cylindrical housing that tapers in the lower area. The air laden with particles is supplied tangentially at a high speed in the upper area of the housing. With that _ i _
  • Air-dust mixture flowing in at very high speed induces a vortex flow inside the cyclone, through which heavier dust particles are pressed against the housing wall and slowed down there. Due to gravity, they sink down into the funnel-shaped area of the housing. The separated particles are collected there and removed from the housing from time to time. It is difficult to separate fine particles with a cyclone because the centrifugal force acting on them is not large enough. The fine particles are therefore carried along by the escaping fluid through the outlet pipe arranged in the upper region of the cyclone. To increase the separation effect, two cyclones are often connected in series. Even in this case, however, it is hardly possible to reliably separate particles with a particle size of less than 5 ⁇ m.
  • a dust cleaner which is based on the principle of a cyclone, is described, for example, in WO-A-98/10691.
  • a double cyclone is used to separate the dust from the air, in which a cyclone for separating small particles is arranged concentrically within a cyclone for separating coarse particles.
  • the double cyclone is relatively space-saving and is still suitable for use in a vacuum cleaner. Since no filter element is used in this vacuum cleaner, which is clogged by particles, the suction power of this vacuum cleaner remains practically constant over time. However, it is disadvantageous that the vacuum cleaner is still relatively large despite the use of the concentrically arranged cyclones.
  • the funnel-shaped collecting area for the separated particles In order to prevent the particles collected in the funnel-shaped area from being whirled up again by the vortex flow inside the housing and from reaching the outside through the air outlet, the funnel-shaped collecting area for the separated particles must be made relatively long. However, the entrainment of particles with the exhaust air cannot be completely avoided. Even the separation of very fine particles is not completely successful for the reasons described above. Therefore, downstream fleece filters must also be used, which are blocked by the deposited particles and must therefore be replaced from time to time.
  • the object of the invention is to provide a device for separating particles from a fluid, which has a constantly high separation effect even for very small particles with a particle size of up to less than 1 ⁇ m.
  • the device should also be built as small as possible and be maintenance-free over a long period of time.
  • the particles should be easy to remove and the device should be suitable for use in a vacuum cleaner.
  • the invention also relates to a vacuum cleaner which comprises the device according to the invention for separating particles from a fluid.
  • the invention thus relates to a device for separating particles from a fluid, in which the separation takes place with the aid of a rotatable filter element.
  • a separation principle and devices which use this principle have already been described by the applicant in EP 0 748 645 A2.
  • the invention builds on that described in the European patent application.
  • the device according to the invention is suitable both for separating solid particles from air and from a liquid.
  • the device according to the invention is particularly suitable for separating particles from air. Even the smallest particles down to a particle size of less than 1 ⁇ m can be reliably separated.
  • the device according to the invention comprises an essentially rotationally symmetrical filter element which is rotatably mounted and the outer circumferential surface of which has a plurality of Has through openings.
  • the filtration principle of such a filter element is based on the fact that particles which reach the area of the rotating filter element are either hit by the latter and knocked outwards, or the particles are generated by those on the filter element Turbulence pushed to the outside. Practically no particles are deposited on the filter element, so that the filter element does not have to be cleaned and the device can be operated without interruption.
  • the fluid, freed from the particles, passes through the passage openings in the outer peripheral surface into the interior of the filter element and from there into an outlet opening through which the cleaned fluid exits the device to the outside.
  • the separated particles, on the other hand, sink down outside the filter element, are stored in the device and are removed from it from time to time.
  • the device according to the invention now has a further essentially rotationally symmetrical outer filter element.
  • This is rotatably mounted concentrically to the first, inner filter element and at a distance from it.
  • the outer peripheral surface of the outer filter element also has a plurality of through openings.
  • the arrangement according to the invention of two filter elements which are mounted so as to be concentrically rotatable relative to one another allows a multitude of possible variations of the device according to the invention. For example, it is possible to vary the outer circumferential surfaces of the two filter elements so that the flow conditions within the device can be set in a targeted manner.
  • the separation performance can be compared the device known from EP '645 can be significantly improved again.
  • the through openings in the outer peripheral surfaces of the inner and / or outer filter element are designed as longitudinal slots running essentially parallel to the axis of rotation of the filter element. This can be achieved, for example, by arranging longitudinal rods running essentially parallel to the axis of rotation of the filter element along the outer peripheral surface of the inner and / or outer filter element. If both the inner and the outer filter element are designed in this way, a fan is expediently arranged in the area above the two filter elements. This fan serves to convey the fluid within the device with a sufficient circulation speed.
  • the outer circumferential surface of the inner filter element by guide vanes which run essentially parallel to the axis of rotation of the filter element and which extend from the outer circumference into the interior of the filter element.
  • the guide vanes are preferably shaped such that they convey fluid into the interior of the filter element when the filter element rotates.
  • the guide vanes can have a crescent-shaped cross section.
  • a fan in the device can be dispensed with. This simplifies the construction of the device according to the invention and allows a compact design.
  • the inner and outer filter elements can differ not only in their outer peripheral surfaces, but also in their height.
  • the outer filter element can have a greater axial height than the inner filter element.
  • a rotation element with a closed outer peripheral surface can be arranged adjacent to the inner filter element. Both elements expediently have the same diameter and are arranged on the same axis of rotation. Both elements are preferably formed in one piece.
  • the flow of the fluid in the space between the two filter elements can be additionally influenced by the rotary element with a closed outer peripheral surface. The rotation of the rotating element ensures that particles which are located in the space between the two filter elements are subjected to greater turbulence and are accordingly transported outwards more quickly. This can improve and accelerate the separation of particles and fluid.
  • a particularly compact design of the device according to the invention is possible if the inner and outer filter elements are driven by the same drive device.
  • the inner filter element is preferably closed on its lower end face.
  • This closure can be designed so that it also has a positive effect on the flow in the area around the inner filter element.
  • the inlet for the particle-laden fluid is designed is not particularly limited, provided that it is impossible for particles to be fed into the interior of the inner filter element.
  • the inlet opening can be arranged such that the fluid laden with particles is fed into a space radially outside the outer filter element.
  • two rotating filter elements prevent particles from entering the interior of the inner filter element and thus not being separated from the fluid.
  • this one filter element is basically sufficient to cleanly separate particles and fluid.
  • the outer filter element ensures that particles that have been transported outwards by both filter elements cannot return to the area of the inner filter element.
  • a particularly compact device can be obtained if the supply line for the particle-laden fluid and the outer filter element have essentially the same cross section and are arranged adjacent to one another.
  • an inner filter element with an end face closed at the bottom is used, that is to say the fluid laden with particles is accordingly fed into the space between the inner and outer filter elements.
  • the supply of fluid laden with particles is expediently carried out from below the filter elements, but this is not mandatory.
  • the device particularly preferably has a collecting chamber for the x separated particles.
  • the collecting chamber can be arranged so that it surrounds the inner and outer filter element.
  • a housing is used around the inner and outer filter element, it is possible to choose the housing shape in such a way that the separated particles are fed to the at least one particle outlet opening in a targeted manner.
  • the housing can be provided with an asymmetrical cross section.
  • the at least one particle outlet opening is then as far as possible from the outer filter element.
  • the cross section of the housing can be oval or helical, for example.
  • the device can, for example, have an opening, possibly provided with a flap. It is preferred to arrange a removable drawer in the catch chamber.
  • the collection bag of the device according to the invention in contrast to conventional vacuum cleaner bags, does not have to be flowed through by the fluid to be cleaned, the collection bag need not have increased tear strength or good filter properties.
  • a simple paper or plastic bag is sufficient as a receiving bag for the particles. In this way, costs can be saved compared to conventional vacuum cleaner bags.
  • the collection bag can also have a self-closing opening for the particle inlet. This can consist, for example, of a movable flap, as is known from conventional vacuum cleaner bags.
  • the invention describes a device for separating particles from a fluid, which allows an effective separation of even the smallest particles with a very compact design. The removal of the separated particles is easy and clean.
  • the inventive device is therefore extremely suitable for use in a vacuum cleaner, which is also the subject of this invention. The invention will be explained below using the example of some drawings. It shows schematically:
  • FIG. 1 shows a cross section through a first example of a device according to the invention.
  • FIG. 3 shows a cross section through a further example of a device according to the invention.
  • Fig. 5a and 5b show an alternative example of a device according to the invention in cross section
  • Fig. 6a and 6b a vacuum cleaner which uses a device according to the invention.
  • the device designated by 1 in FIG. 1 essentially consists of three areas, namely a feed line 2 for fluid laden with particles, here air, a collector. chamber 12 for receiving the separated particles and an outflow housing 11 from which the particle-free fluid is led out of the device.
  • the air laden with particles is represented by the dashed arrows denoted by a
  • the air freed from particles is represented by the white arrows b
  • the black arrows c represent the separated particles.
  • the air laden with particles is fed to the device 1 from below.
  • the filter element 3, which according to the invention consists of an outer filter element 4 and an inner filter element 5, directly adjoins the end of the feed line 2.
  • the cross section of the feed line 2 corresponds to the cross section of the outer filter element 4. Since the inner filter element 5 is closed at its lower end, the air laden with particles is let into the area between the inner filter element 5 and the outer filter element 4.
  • the inlet opening can extend over the entire circumference of the inner filter element, or there can be one or more separate inlet openings for the particle-laden fluid in the region between the inner and outer filter element.
  • the air-particle mixture which has entered the intermediate space between the two filter elements is set in a rotational flow by means of a fan 9 (not shown in more detail) arranged above the filter element.
  • the drive device 10, which drives the fan 9, also sets the two filter elements 4 and 5 in rotation. Both filter elements and the fan have this same axis of rotation 8.
  • the centrifugal force acting on them accelerates in particular the heavy particles in the direction of the outer filter element 4.
  • the outer peripheral surface of the filter element 4 has through openings. These can have the shape of longitudinal slots, for example, and in particular the outer peripheral surface can be formed by longitudinal bars running parallel to the axis of rotation, as the cross section along the line AA in FIG. 2a can be seen.
  • the inner filter element 5 ensures that particles which approach this filter element either either collide with the outer circumferential surface of the filter element and are knocked outwards, or else the eddies in the area around the filter element 5 force the particles radially outward path .
  • the inner filter element like the outer filter element 4, can also be formed by longitudinal rods 6 arranged parallel to its axis of rotation, as shown in FIG. 2a.
  • the inner filter element 5 consists of guide vanes running parallel to the longitudinal axis of the filter element.
  • the outer ends of the guide vanes 7 end on the cylinder jacket circumferential surface of the filter element.
  • Through openings in the form of longitudinal slots are formed between the individual guide vanes 7 over the entire height of the filter element.
  • the individual guide vanes extend into the interior of the filter element 5 and widen their cross section. Their cross-sectional area is thus roughly crescent-shaped.
  • FIG. 3 shows a further exemplary embodiment of a device according to the invention.
  • the basic structure of the device roughly corresponds to the device shown in FIG. 1. It differs from this, on the one hand, in that the drive device 10 for the filter element and the fan 9 is arranged below the filter element in the region of the feed line 2.
  • the drive device 10 is cooled by the air blowing past. The same effect also occurs if the drive device, as in FIG. 1, is arranged in the outflow housing.
  • impurities emitted by the drive device for example abrasion of the carbon brushes of the motor, are also cleaned by the device according to the invention and removed from the exhaust air.
  • the flow of the fluid laden with particles takes place, as in the device according to FIG. 1, in the space between the outer filter element 4 and the inner filter element 5.
  • the filter element 3 is here in a separation chamber separated from the collecting chamber 12 for the separated particles 14 arranged. Separation chamber 14 and collecting chamber 12 are connected to one another through opening 15. The particles separated from the filter element 3 fall into the collecting chamber 12 through these openings 15. The particles can then be disposed of from this collecting chamber.
  • the structure of the filter element 3 also differs from the filter element in the device according to FIG. 1.
  • the deviation relates to the inner filter element 5 and here its lower part. While the upper part of the inner filter element 5, which is adjacent to the fan 9, is likewise formed by parallel longitudinal bars, through the interstices of which the particle-free fluid enters the inside of the filter element and from there into the outflow housing 11, the outer peripheral surface is the lower region of the inner one Filter element closed.
  • This closed Sene, cylindrical jacket-shaped area is designated by 13 in Fig. 3.
  • the closed area 13, which is connected to the open area 5 and rotated together with it by the drive device 10, further accelerates the air laden with particles in the separation chamber 14 due to its rotation. This causes the particles flowing past the closed area 13 additionally accelerated outwards in the direction of the outer walls of the separation chamber 14. Particles that strike the closed area 13 are knocked out by the collision.
  • FIGS. 4a to 4c A device according to the invention with a structure similar to that of FIG. 3 is shown in FIGS. 4a to 4c.
  • Inflow area 2, separation chamber 14 and collecting chamber 12 correspond to those according to FIG. 3.
  • guide vanes are present in the device according to FIG. 4, as have already been discussed in connection with FIG. 2b.
  • the arrangement of the guide vanes is shown in Fig. 4b.
  • Figure 4b corresponds to a cross section along the line C-C in Fig. 4a.
  • the through openings 15 have been drawn in this figure, although they are not in the plane shown but at the bottom of the separation chamber 14, as can be seen in FIG. 4a. In this way, however, the position of the through openings to the collecting chamber 12 is to be clarified.
  • the guide vanes 7 ensure sufficient swirling of the air laden with particles in the Separation chamber 14. They also ensure sufficient conveyance of the air freed from particles through the outflow housing 11 to the outside of the device. Because of the lack of the fan, the device can be made very compact.
  • the outflow housing 11 need only have the same cross section as the inner filter element 5 in order to be able to discharge the air that has passed through the filter element to the outside.
  • Fig. 4c is a cross section along the line D-D in Fig. 4a.
  • the cross section illustrates the configuration of the closed area 13 of the inner filter element.
  • the through openings 15 between the separating chamber 14 and the collecting chamber 12 are shown, although they lie below the cutting plane.
  • 4c also corresponds to a comparable cross section through the device according to FIG. 3.
  • FIG. 5 shows a device whose filter element 3 consists of an outer filter element 4 with parallel longitudinal bars and an inner filter element 5, which is formed from guide vanes 7 arranged in parallel.
  • the guide vanes 7 extend over the entire axial length of the inner filter element. Due to the use of guide vanes, a fan can also be dispensed with in this case.
  • the device shown in Fig. 5 differs from the previous devices in the manner of supplying the air laden with particles (arrow a).
  • the air laden with particles is fed through a feed line 2 tangential to the outer filter element 4 into the separating chamber 14 fed.
  • the feed line 2 has essentially the same height as the filter element 3, while the height of the separation chamber 14 is greater than this.
  • the tangential supply of the air laden with particles can be clearly seen in the cross section along the line EE (FIG. 5b).
  • the through openings 15 to the collecting chamber 12, which receives the separated particles, are again drawn in the sectional plane in order to clarify their position. In fact, however, the through openings 15 are located below the sectional plane, as shown in FIG. 5a.
  • Fig. 6 shows a vacuum cleaner which uses a device according to the invention to separate the dust from the air.
  • the housing of the vacuum cleaner is shown cut. 6a and 6b are rotated 90 against one another. The
  • the device essentially corresponds to the device shown in FIG.
  • the through openings 15 are restricted to the front area of the device, since the collecting container 12 only takes up the separated particles from the front lower area of the vacuum cleaner.
  • the collecting container 12 is designed as a pull-out drawer.
  • the drawer is shown partially pulled out so that the spatial arrangement can be seen.
  • the footprint of the drawer corresponds to a circular ring segment. It is designed so that it rests on the drive device 10 in the inserted state.
  • the collecting chamber By designing the collecting chamber as a drawer, the separated particles can be emptied very easily without the separation device itself having to be opened. It is also possible to insert a collecting bag (not shown) into the collecting container 12, which bag holds the particles. takes and can be disposed of together with the particles.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

L'invention concerne un dispositif servant à séparer des particules contenues dans un fluide. Selon l'invention, la séparation se fait à l'aide d'un élément filtrant pratiquement à symétrie de rotation, qui laisse passer le fluide exempt de particules pendant que les particules séparées sont rassemblées à l'extérieur de l'élément filtrant. L'élément filtrant est constitué d'un élément filtrant intérieur et d'un élément filtrant extérieur qui sont placés pratiquement en symétrie de rotation et concentriquement l'un par rapport à l'autre. Les deux éléments filtrants sont logés rotatifs et présentent une multitude d'ouvertures de passage sur leur surface périphérique externe.
PCT/EP2000/010601 2000-10-27 2000-10-27 Dispositif pour separer des particules contenues dans un fluide WO2002034365A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2000/010601 WO2002034365A1 (fr) 2000-10-27 2000-10-27 Dispositif pour separer des particules contenues dans un fluide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2000/010601 WO2002034365A1 (fr) 2000-10-27 2000-10-27 Dispositif pour separer des particules contenues dans un fluide

Publications (1)

Publication Number Publication Date
WO2002034365A1 true WO2002034365A1 (fr) 2002-05-02

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PCT/EP2000/010601 WO2002034365A1 (fr) 2000-10-27 2000-10-27 Dispositif pour separer des particules contenues dans un fluide

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1733671A2 (fr) * 2005-06-10 2006-12-20 Lg Electronics Inc. Aspirateur
US7645311B2 (en) 2005-07-12 2010-01-12 Samsung Gwangju Electronics Co., Ltd. Cyclone unit and contaminants-collecting apparatus having the same
US10638902B2 (en) 2016-12-22 2020-05-05 Bissell Inc. Vacuum cleaner

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR847805A (fr) * 1900-01-01
GB710366A (en) * 1950-08-18 1954-06-09 Heinz Josef Junkmann Improved apparatus for the purification of gas by means of centrifugal force
US3797662A (en) * 1970-11-09 1974-03-19 H Titus Pressure-filtering apparatus and filtering method
US4093552A (en) * 1975-12-11 1978-06-06 Escher Wyss Limited Filtration apparatus
JPS59203623A (ja) * 1983-05-04 1984-11-17 Hiroyuki Nishide 集塵装置
DE4308907A1 (de) * 1993-03-19 1994-09-22 Wolf M Berz Verfahren und Vorrichtung zur Abscheidung partikelförmiger Verunreinigungen aus einem strömungsfähigen Medium
WO2001012298A1 (fr) * 1999-08-16 2001-02-22 Lundin Filter Gmbh Dispositif destine a separer des particules d'un fluide

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR847805A (fr) * 1900-01-01
GB710366A (en) * 1950-08-18 1954-06-09 Heinz Josef Junkmann Improved apparatus for the purification of gas by means of centrifugal force
US3797662A (en) * 1970-11-09 1974-03-19 H Titus Pressure-filtering apparatus and filtering method
US4093552A (en) * 1975-12-11 1978-06-06 Escher Wyss Limited Filtration apparatus
JPS59203623A (ja) * 1983-05-04 1984-11-17 Hiroyuki Nishide 集塵装置
DE4308907A1 (de) * 1993-03-19 1994-09-22 Wolf M Berz Verfahren und Vorrichtung zur Abscheidung partikelförmiger Verunreinigungen aus einem strömungsfähigen Medium
WO2001012298A1 (fr) * 1999-08-16 2001-02-22 Lundin Filter Gmbh Dispositif destine a separer des particules d'un fluide
DE19938769A1 (de) * 1999-08-16 2001-03-01 Lundin Filter Gmbh Vorrichtung zum Abtrennen von Teilchen aus einem Fluid

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 071 (C - 272) 30 March 1985 (1985-03-30) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1733671A2 (fr) * 2005-06-10 2006-12-20 Lg Electronics Inc. Aspirateur
EP1733671A3 (fr) * 2005-06-10 2013-07-24 LG Electronics, Inc. Aspirateur
US7645311B2 (en) 2005-07-12 2010-01-12 Samsung Gwangju Electronics Co., Ltd. Cyclone unit and contaminants-collecting apparatus having the same
US10638902B2 (en) 2016-12-22 2020-05-05 Bissell Inc. Vacuum cleaner
US11744422B2 (en) 2016-12-22 2023-09-05 Bissell Inc. Vacuum cleaner

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