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EP1743561B1 - Collecteur de poussière - Google Patents

Collecteur de poussière Download PDF

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Publication number
EP1743561B1
EP1743561B1 EP20060014399 EP06014399A EP1743561B1 EP 1743561 B1 EP1743561 B1 EP 1743561B1 EP 20060014399 EP20060014399 EP 20060014399 EP 06014399 A EP06014399 A EP 06014399A EP 1743561 B1 EP1743561 B1 EP 1743561B1
Authority
EP
European Patent Office
Prior art keywords
tank
filter
dust collector
primary filter
main body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20060014399
Other languages
German (de)
English (en)
Other versions
EP1743561A2 (fr
EP1743561A3 (fr
Inventor
Hiroaki Ichikawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Makita Corp
Original Assignee
Makita Corp
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 Makita Corp filed Critical Makita Corp
Publication of EP1743561A2 publication Critical patent/EP1743561A2/fr
Publication of EP1743561A3 publication Critical patent/EP1743561A3/fr
Application granted granted Critical
Publication of EP1743561B1 publication Critical patent/EP1743561B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • A47L9/12—Dry filters
    • A47L9/125—Dry filters funnel-shaped
    • 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
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/36—Suction cleaners with hose between nozzle and casing; Suction cleaners for fixing on staircases; Suction cleaners for carrying on the back
    • A47L5/365—Suction cleaners with hose between nozzle and casing; Suction cleaners for fixing on staircases; Suction cleaners for carrying on the back of the vertical type, e.g. tank or bucket type
    • 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
    • A47L9/20—Means for cleaning filters

Definitions

  • the present invention relates to a dust collector which is provided with a main body having a motor and a fan in an upper portion of a tank having a suction port, which sucks ambient air from the suction port on the basis of rotation of the fan caused by driving the motor, and which captures dust by means of a filter provided within the tank.
  • the dust collector includes a main body having a motor and a fan for being detachably mounted on to an upper portion of a tank having a suction port.
  • air is sucked from the suction port by rotations of the fan in accordance with driving of the motor, and discharged to an external portion through an inner side of the main body.
  • Within the tank are provided a bag-shaped primary filter, and a secondary filter protruding in a closed-end tubular shape towards an inner side of the primary filter so as to inhibit contraction of the primary filter.
  • the cage-shaped filter cage is brought into partial contact with the primary filter, restoration motion is hard to be uniformly transmitted to the primary filter at a time of a cessation of operation. Moreover, the primary filter is expanded only partially, and the dust is brushed off unevenly. Accordingly, a reduction in the degree of suction force by the clogging can not be completely nullified. Further, since the filter cage is independently manufactured of steel wire, steel plate or the like, increases in costs arise.
  • US 5,651,811 discloses a vacuum cleaner according to the preamble of claim 1 comprising a primary filter, a secondary filter and a filter support formed in the same shape as the primary filter.
  • the filter support is interposed between the primary filter and the disc-shaped secondary filter in such a manner as to cover at least the inner side surface of the primary filter.
  • the non-elastic filter support is provided to retain the conical shape of the relatively unstable conical element.
  • the second filter element comprises multiple layers and is sandwiched between the first element and the filter support.
  • US 5,690,710 discloses a self-cleaning filter for a vacuum cleaner.
  • a further vacuum cleaner is disclosed in US 4,297,114 .
  • An object of the present invention is to provide a dust collector which, with a less expensive structure, can evenly and effectively brush off dust in a primary filter automatically, and which can sustain a preferable dust-collecting function.
  • a dust collector according to the appended claim 1 is provided.
  • the elastic body is constituted by a plate-like sponge, for purposes of obtaining a satisfactory elastic body less expensively.
  • a reinforcing portion which is in close contact with an inner bottom surface of the secondary filter is provided in a protruding manner on a lower surface of the main body, in order to effectively prevent a buckling deformation of the secondary filter at a time of operation.
  • FIG. 1 is a cross sectional view showing an example of a dust collector.
  • a dust collector 1 is constituted by a closed-end circular tank 2 provided with casters 3, 3, ... in a bottom portion and an opening at an upper side, and a main body 4 mounted on an upper side of the tank 2 and provided with a motor 5 and a fan 6.
  • the main body 4 has a tank cover 7 closing the upper opening of the tank 2, and a cowling 8 coupled to an upper side of the tank cover 7; and the main body 4 accommodates the motor 5 between a tubular portion 9 provided in the center of the tank cover 7 in a downward protruding manner, and the cowling 8.
  • the motor 5 is provided in a manner such that the fan 6 is faced downward.
  • the main body 4 can discharge air sucked from a suction air port 10 formed in the center of a lower surface of the tubular portion 9, through an air discharge port 12 provided in a lower side of a peripheral edge of the cowling 8, using a ventilation path 11. Further, the main body 4 can be fixed to the tank 2 by locking a hook (not shown) provided on an upper side of a side surface of the tank 2, on to the peripheral edge of the tank cover 7, in a state of being mounted on the tank 2.
  • Reference numeral 13 denotes a suction tube in which a suction port is open on the side surface of the tank 2 and to which a suction hose or the like can be connected.
  • Reference numeral 14 denotes a holder which is inserted within the suction tube 13 from the inner side of the tank 2, and guides air sucked into the suction tube 13 to the bottom portion of the tank 2.
  • a pre-filter 15 constituting a primary filter is installed on the upper opening of the tank 2.
  • the pre-filter 15 is a closed-end bag body which is open in an upper portion, is formed in a bowl shape in which a diameter becomes gradually smaller toward a lower side, and is made of a synthetic fiber (for example, a polyester).
  • the pre-filter 15 is capable of partitioning the main body 4 and the suction tube 13 inside the tank 2 by locking a hook 16 provided on the peripheral edge of the upper opening, on to the periphery of the upper opening of the tank 2.
  • a well-known anti-static finish in which a hydrophilic anti-static agent is added to the fiber is applied to the pre-filter 15.
  • a powder filter 17 serving as the secondary filter is installed on the upper opening of the tank 2 on an inner side of the pre-filter 15.
  • the powder filter 17 is also formed in an outer shape of closed-end tubular in which a diameter becomes gradually smaller toward a lower side.
  • the powder filter 17 is constituted by a top plate 18 at an upper end, a bottom plate 19 at a lower end, and a filter 20 arranged between plates 18 and 19, and the filter 20 is formed by folding a synthetic resin (for example, a polyester) in a cylindrical shape.
  • the powder filter 17 is capable of partitioning the main body 4 and the suction tube 13 by protruding toward an inner portion of the pre-filter 15 when a hook portion 21 provided on a peripheral edge of the top plate 18 is locked, on to the periphery of the upper opening of the tank 2 from above the hook 16 of the pre-filter 15.
  • reference numeral 22 denotes a damper serving as an elastic body.
  • the damper 22 is made of a polyurethane sponge having a predetermined thickness (10 mm in this case) and formed in a plate shape, and is rounded in a tubular shape in conformity with the inner side surface of the pre-filter 15. By doing this, the damper 22 is interposed between the pre-filter 15 and the powder filter 17 over the entirety of its inner side, except for the bottom portion of the pre-filter 15. Accordingly, in a state in which operations are stopped, the pre-filter 15 is kept in a bowl-shaped bulged shape due to the elasticity of the damper 22.
  • a ring-shaped rib 23 corresponding to a reinforcing portion is provided on a lower surface of the tubular portion 9 of the tank cover 7 so as to be protruded toward a lower side on a concentric circle with the suction air port 10, and a lower end of the rib 23 is made to be close to the bottom plate 19 of the powder filter 17.
  • the motor 5 is driven and the fan 6 is rotated by turning on a switch (not shown) provided on the main body 4.
  • a switch not shown
  • external air sucked from the suction tube 13 via the suction hose or the like is conveyed to the inner side of the tank 2, passes through the pre-filter 15 and the damper 22 as well as the powder filter 17; the external air thereafter moves forward into the main body 4 from the suction air port 10, and is discharged to the external portion from the air discharge port 12 through the ventilation path 11.
  • dust sucked with the air into the tank 2 is captured first by the pre-filter 15, dust passing through the pre-filter 15 is captured by the damper 22, and minor concentrations of dust passing through the damper 22 are captured by the powder filter 17.
  • the pre-filter 15 in which the suction air port 10 is positioned on the inner side is applied a negative pressure
  • the pre-filter 15 is contracted and deformed in such a manner as to be in contact with an outer periphery of the powder filter 17, and the damper 22 positioned between filters 15 and 17 is also contracted and deformed.
  • An external force is applied to the powder filter 17 on the basis of the deformation of the pre-filter 15 and the damper 22.
  • the rib 23 provided in a protruding manner in the tubular portion 9 of the tank cover 7 is in contact with the bottom plate 19 and supports the powder filter 17 from the inner side, it is possible to prevent the filter 20 from becoming buckled or deformed.
  • the switch when the switch is turned off so as to stop the drive of the motor 5, the air flow stops and the negative pressure is cancelled, and the damper 22 is restored to its original shape by means of elastic force.
  • the pre-filter 15 is pressed over its entire periphery from the inner side by the restoration motion of the damper 22 so as to bulge towards the outer side, and is restored to its original bowl shape. Due to the operation of the pre-filter 15, dust attached to the surface of the pre-filter 15 is brushed off. Particularly in this case, since antistatic finish is applied to the pre-filter 15, the ability of dust to be peeled off is enhanced and dust is effectively removed.
  • the damper 22 is interposed between the pre-filter 15 and the powder filter 17 in a manner such as to cover the inner side surface of the pre-filter 15 over its entire periphery, it is possible to brush off dust attached to the pre-filter 15 efficiently and evenly by the contraction and restoration motion of the pre-filter 15 and the damper 22 in accordance with the operation and cessation of operation. Therefore, it is possible to prevent lowering of the suction force which is caused by clogging of the pre-filter 15, and it is possible to maintain a satisfactory dust-collecting function. Further, since the structure is simplified by interposing the damper 22 between the pre-filter 15 and the powder filter 17, increases in costs can be restricted to a modest level. Further, since the damper 22 has a filtering function, the amount of dust attached to the powder filter 17 is reduced. As a result, the maintenance of the powder filter 17 needs not to be made frequently, thereby enhancing usability.
  • the rib 23 close to the inner bottom surface of the powder filter 17 is provided in a protruding manner on the lower surface of the tubular portion 9 of the main body 4, it is possible to prevent effectively the powder filter 17 from being buckled or deformed at a time of operation, and it is also reasonable to expect an improvement in the level of durability.
  • the elastic body needs not be limited to a sponge as in the embodiment described above, and other materials such as felt can be used as long as the elastic body has air permeability.
  • the elastic body may be provided in such a manner as to cover the entirety of an inner peripheral surface including the bottom surface of the primary filter.
  • the reinforcing portion is not limited to the ring-shaped rib as in the embodiment described above, and the reinforcing portion may be structured by forming the projections or protrusions intermittently as long as it can support the secondary filter.
  • the reinforcing portion can be omitted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)

Claims (12)

  1. Collecteur de poussière, comprenant :
    un réservoir (2) ayant un orifice d'aspiration (13) ;
    un corps principal (4) ayant un moteur (5) et un ventilateur (6) et aménagé dans une partie supérieure du réservoir (2) ;
    un filtre primaire (15) en forme de sachet aménagé dans le réservoir (2) pour séparer l'orifice d'aspiration (13) et le corps principal (4), et
    un filtre secondaire (17) pour séparer l'orifice d'aspiration (13) et le corps principal (4) sur un côté supérieur du filtre primaire (15) de manière à faire saillie en forme tubulaire à extrémité fermée vers un côté interne du filtre primaire (15),
    caractérisé en ce que,
    en raison d'une rotation du ventilateur (6) à la suite de l'entraînement du moteur (5), de l'air ambiant est aspiré par l'orifice d'aspiration (13) et est déchargé dans une partie externe à travers le réservoir (2) et le corps principal (4), moyennant quoi la poussière aspirée avec l'air ambiant peut être capturée au moyen du filtre primaire (15) et du filtre secondaire (17),
    dans lequel un corps élastique (22) ayant une perméabilité à l'air est intercalé entre le filtre primaire (15) et le filtre secondaire (17) de manière à couvrir au moins la totalité d'une surface latérale périphérique interne du filtre primaire (15), si bien qu'il est possible de brosser la poussière fixée au filtre primaire (15) par un mouvement de contraction et de restauration du filtre primaire (15) et du corps élastique (22), lequel mouvement est provoqué par le fonctionnement et la cessation de fonctionnement du moteur (5).
  2. Collecteur de poussière selon la revendication 1, caractérisé en ce que le corps élastique (22) est constitué d'une éponge en forme de plaque.
  3. Collecteur de poussière selon la revendication 1 ou la revendication 2, caractérisé en ce qu'une partie de renfort (23) amenée en contact étroit avec une surface inférieure interne du filtre secondaire (17) est ménagée sur une surface inférieure du corps principal (4).
  4. Collecteur de poussière selon la revendication 2, caractérisé en ce que l'éponge en forme de plaque (22) présente une forme tubulaire en conformité avec une surface latérale interne du filtre primaire (15) pour être logée dans le filtre primaire (15).
  5. Collecteur de poussière selon la revendication 1, caractérisé en ce que le corps élastique (22) est collé à la surface interne du filtre primaire (15).
  6. Collecteur de poussière selon la revendication 1, caractérisé en ce que le réservoir (2) est circulaire avec une extrémité fermée, le corps principal (4) présente un couvercle de réservoir (7) fermant une ouverture supérieure du réservoir (2) pour pouvoir être montée sur un côté supérieur du réservoir (2) et le corps principal (4) est fixé au réservoir (2) en verrouillant un crochet ménagé sur le côté supérieur d'une surface latérale du réservoir (2) sur le bord périphérique du couvercle de réservoir (7) près à être monté sur le réservoir (2).
  7. Collecteur de poussière selon la revendication 1, caractérisé en ce que le filtre primaire (15) est un corps de sachet à extrémité fermée qui a une ouverture dans une partie supérieure et qui est formé à la manière d'un bol dans lequel le diamètre devient graduellement plus petit en direction d'un côté inférieur, et le filtre primaire (15) sépare le corps principal (4) et l'orifice d'aspiration (13) dans le réservoir (12) en bloquant un crochet (16) prévu sur la périphérie de l'ouverture, sur la périphérie de l'ouverture supérieure du réservoir (2).
  8. Collecteur de poussière selon la revendication 1, caractérisé en ce que le filtre primaire (15) a reçu un fini antistatique.
  9. Collecteur de poussière selon la revendication 1, caractérisé en ce que le filtre secondaire (17) comprend :
    une plaque supérieure (18) à une extrémité supérieure pour être bloquée sur la périphérie de l'ouverture supérieure du réservoir (2) ;
    une plaque inférieure (19) à une extrémité inférieure, et
    un élément filtrant (20) aménagé entre la plaque supérieure (18) et la plaque inférieure (19).
  10. Collecteur de poussière selon la revendication 3, caractérisé en ce que la partie de renfort (23) est une nervure en forme d'anneau qui fait saillie vers un côté inférieur sur un cercle concentrique avec l'orifice d'air d'aspiration (10) prévue sur une surface inférieure du corps principal (4).
  11. Collecteur de poussière selon la revendication 1, caractérisé en ce qu'un élément de guidage (14) pour guider l'air vers une partie inférieure du réservoir (2) est prévu au niveau de l'orifice d'aspiration (13) du réservoir (2).
  12. Collecteur de poussière selon la revendication 1, caractérisé en ce qu'une roulette (3) est montée sur une partie inférieure du réservoir (2).
EP20060014399 2005-07-12 2006-07-11 Collecteur de poussière Active EP1743561B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005203207A JP4699825B2 (ja) 2005-07-12 2005-07-12 集塵機

Publications (3)

Publication Number Publication Date
EP1743561A2 EP1743561A2 (fr) 2007-01-17
EP1743561A3 EP1743561A3 (fr) 2008-01-09
EP1743561B1 true EP1743561B1 (fr) 2012-10-17

Family

ID=37192646

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20060014399 Active EP1743561B1 (fr) 2005-07-12 2006-07-11 Collecteur de poussière

Country Status (2)

Country Link
EP (1) EP1743561B1 (fr)
JP (1) JP4699825B2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5603216B2 (ja) * 2010-11-30 2014-10-08 株式会社マキタ 集塵機
JP6051582B2 (ja) * 2012-04-27 2016-12-27 マックス株式会社 集塵機
KR102665025B1 (ko) * 2016-08-19 2024-05-13 삼성전자주식회사 공기청정기
CN107981781B (zh) * 2017-12-22 2024-07-12 天佑电器（苏州）有限公司 清洁工具
CN115999771B (zh) * 2023-02-22 2023-06-13 金广恒环保技术（南京）股份有限公司 一种板式湿电除尘器

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5441428Y2 (fr) * 1972-05-29 1979-12-04
JPS5428182U (fr) * 1977-07-28 1979-02-23
US4297114A (en) 1978-01-24 1981-10-27 Hutchins Manufacturing Co. Vacuum cleaner having bag cleaning apparatus
JPH0246249B2 (ja) * 1986-06-23 1990-10-15 Ashimori Ind Co Ltd Fuirutaaoyobisonoseizohoho
US5593479A (en) 1995-02-02 1997-01-14 Hmi Industries, Inc. Filter system
US5858044A (en) * 1996-07-11 1999-01-12 Donaldson Company, Inc. Filter arrangement including removable filter with first and second media secured together
US5690710A (en) 1996-08-13 1997-11-25 Stephan; Paul F. Self-cleaning filter
US6219880B1 (en) * 1998-09-17 2001-04-24 Pullman-Holt Corporation Vacuum cleaner
JP2002045318A (ja) * 2000-08-04 2002-02-12 Hitachi Koki Co Ltd 携帯用集塵機
JP2003181232A (ja) * 2001-12-20 2003-07-02 Makita Corp 集塵機

Also Published As

Publication number Publication date
JP4699825B2 (ja) 2011-06-15
EP1743561A2 (fr) 2007-01-17
JP2007021291A (ja) 2007-02-01
EP1743561A3 (fr) 2008-01-09

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