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
• • 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
• • 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
• • 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

Definitions

• the present invention relates to the technical field of vacuum cleaners used for the suction cleaning of a flow of air causing dust and other waste in the vicinity of a suction head.
• the invention relates more particularly to the field of bagless vacuum cleaners in which the separation between the exhaust air and the aspirated particles is essentially carried out by means of a cyclone system as opposed to vacuum cleaners in which the separation is carried out by filtration. .
• a bagless vacuum cleaner generally comprises, as described in EP 1 361 815, a primary cyclonic separation stage followed by a cyclonic secondary separation stage.
• the recovery of the separated waste at the primary stage takes place at the separation chamber of said primary stage, the outer body serves as a recovery tank.
• the outer body serves as a recovery tank.
• most of the internal volume of the outer body is occupied by the first separation stage and a part of the second separation stage so that the volume useful for the recovery of waste is relatively small.
• the user must dismantle the assembly formed by the two filtration stages and then unlock a trap located at the bottom of the recovery tank.
• Such an architecture has the drawbacks, on the one hand, of offering a limited space for the accumulation of separated waste of the sucked air and, on the other hand, of imposing the transport of the heavy unit and large volume constituted by the cyclonic separation systems and the recovery tank to the dump site. Moreover, insofar as the accumulation of waste is carried out within the cyclonic separation device there is a risk that the waste separated by the primary system is re-aspirated to the secondary system.
• the invention relates to a vacuum cleaner comprising a waste separation assembly which comprises:
• At least one cyclonic separation stage comprising a cyclone primary separator of longitudinal axis ⁇ ,
• the removable waste collection container is associated with a movable cover which defines a connection duct between the primary separator and the removable container, the connecting duct having, at its connection to the primary separator a section of generally annular input coaxial with the axis ⁇ .
• the implementation of a lid allows a transport of the recovery container with the lid in a closed position thus reducing the risk of spreading the accumulated waste outside. Once arrived at the place of emptying, it is possible to open the lid so as to clear the mouth of the removable container and thus make emptying easy.
• the annular shape of the lid inlet section avoids during operation of the vacuum recirculation of waste that has accumulated in the removable collection container while allowing rather large waste to be able to enter the container easily.
• the outer wall of the connecting conduit diverges between the inlet section and the outlet section. This divergence of the outer wall of the connecting pipe helps to prevent the waste accumulated in the recovery container, on the one hand, are re-aspired and, on the other hand, do not escape during its transport when it has been removed from the vacuum cleaner.
• the outer diameter of the inlet section of the cover may be chosen to be smaller than the smallest dimension of the periphery or around the outlet section of the cover. This increase in the external diameter of the connecting duct, between the inlet section and the outlet section, also makes it possible to reduce the air velocities and limit the recirculation of the waste.
• the primary separator comprises a tubular body whose wall diverges before a zone of connection to the lid so that the tubular body has, in the connection zone, an internal diameter greater than internal diameter of the tubular body outside the connection zone.
• the zone of connection of the tubular body to the lid defines a kind of buffer zone which induces a slowing down of the air and which is able to retain the waste to prevent their recirculation before their path in the conduit connecting the lid to the recovery box.
• the inlet section of the cover has a lower surface than the surface of the outlet section of the cover located at the connection of the connecting conduit to the removable container. Increasing the section of the connecting pipe between its input and the output allows to accentuate the reduction of the speed of the air in the recovery container and contributes to limit the risks of recirculation of the waste.
• the lid can be made in any suitable way.
• the lid comprises:
• a core which is located inside the outer body and which delimits with the outer body the connecting pipe extending between the core and the outer body.
• the outer body comprises a substantially cylindrical tubular upper part of axis ⁇ and a generally frustoconical lower part of axis ⁇ .
• the core has a generally cylindrical or frustoconical shape of revolution of axis ⁇ .
• the core is bonded to the body by a lateral tab.
• the cover may comprise a deflector which extends from the connecting tongue inside the removable container.
• This deflector is intended to prevent the waste being in the form of filaments such as for example textile threads, hair or hair, do not remain hooked during operation of the vacuum cleaner, the connecting tongue and form a cluster obstructing a good disposal of separated waste to the bottom of the recovery container.
• the baffle may have a convex outer surface and have an end portion inclined towards the center of the removable container.
• the deflector thus produced also has a function antiretour or eddy and hinders the recirculation of waste accumulated at the bottom of the recovery container.
• the core may comprise, in its lower region, a flat antirecessary peripheral flange.
• the flange has a substantially annular overall shape with an outer diameter substantially equal to or greater than the outer diameter of the inlet section of the lid.
• the core may be hollow and closed at its upper end located substantially at the inlet section of the lid.
• the lid can be associated with the removable container being independent and completely separable from the latter. According to the invention, the lid can also be linked to the removable container.
• the lid may then for example be articulated on the removable container so as to be rotatable between an open position and a closed position.
• the vacuum cleaner comprises means for locking the lid in an at least partial closure position of the removable container.
• FIG. 1 is a partially cut elevation of a bagless vacuum cleaner according to the invention.
• FIG. 2 is an axial section on a larger scale of a removable waste collection container and its lid as implemented on the vacuum cleaner illustrated in FIG.
• FIG. 3 is a perspective of the removable container for waste recovery with its lid in the closed position.
• FIG. 4 is a perspective of the removable container for waste recovery with its cover in the open position.
• a vacuum cleaner according to the invention as shown in Figure 1, comprises a frame 1 supported by wheels 2 facilitating movement of the vacuum cleaner during use.
• the frame comprises a motor-fan unit 3 for generating a vacuum, an electric cable winder and control electronics as well as manual control members for controlling the operation of the vacuum cleaner.
• the vacuum cleaner comprises a duct 4 providing a ventilation link between the motor-fan unit 3 and a separation assembly 5 so that the motor-fan unit establishes a depression during its operation.
• the duct 4 may comprise, upstream of the motor-fan unit, a filtering medium 6, such as a foam, intended to trap the finest particles which would not have been separated from the air sucked by the separation assembly 5. .
• the separation assembly 5 comprises a connecting mouth 7 of a suction brush, not shown, generally comprising a suction head adapted to the end of a rigid telescopic tube connected to the mouth 7 by a flexible tube so that the suction head is in ventilation connection with the motor-fan unit 3 via the separation assembly 5 and the duct 4.
• the separation assembly 5 implements a principle of cyclonic separation of waste and air sucked.
• the separation assembly 5 comprises downstream of the mouth 7 at least one and, according to the illustrated example, two stages 8 and 9 of cyclonic separation.
• the first stage 8 has a primary separator 10 per cyclone while the second stage
• the primary separator 10 comprises a tubular body 15 which delimits a generally frustoconical chamber of revolution axis ⁇ whose outer wall diverges downwards.
• the mating mouth 7 of the brush is then connected to the body 15 by a conduit 16 which opens tangentially into the primary separator 10.
• the first stage 8 also comprises in the center of the tubular body 15 a connecting tube 17 to the second separation stage 9.
• the tube 17 has a low part with symmetry of revolution of axis ⁇ whose lower end is substantially frustoconical and converges downwards.
• the vacuum cleaner comprises a removable waste collection container 20 which is located under the primary separator 10.
• the container 20 can to be removed from the vacuum cleaner by a user without the aid of tools, likewise for the replacement of the container 20.
• the container 20 is fitted under the primary separator 10 in a fitted receiving housing in the frame 1 being understood that any other mode of adaptation could be envisaged.
• the container 20 is in the form of a bowl or tray made of plastic preferably at least partially transparent or translucent so as to allow the user to visually appreciate the filling.
• the container 20 is equipped with a handle 21 in the form of a handle which facilitates handling.
• the container 20 is associated with a movable lid 22 which provides the interface between the container 20 and the primary separator 10.
• the cover 22 defines a connecting conduit 24 between the primary separator 10 and the container 20.
• the cover 22 comprises a hollow outer body 25 with a substantially cylindrical upper portion 26 of revolution axis ⁇ and a lower portion 27 of generally frustoconical shape of axis ⁇ .
• the upper portion 26 has a cross section substantially circular while the lower portion 27 has at its widest region a cross section of generally rectangular shape with rounded corners.
• the conformation of the upper 26 and lower 27 parts gives the hollow outer body 25 the general appearance of an inverted funnel.
• the outer body 25 is connected to the container 20 by a hinge 28 so that the lid 22 is rotatable between a closed position, as illustrated in FIGS. 2 and 3, and an open position as illustrated in FIG. Figure 4.
• connection means can be made in any appropriate manner.
• the connection means between the primary separator 10 and the cover 22 are formed by the circular mouth of the upper portion 26 which is intended to bear against a shoulder 29 provided by a lower end of the body 15 so as to achieve the substantially airtight connection. In order to complete this seal, it can be implemented a seal at the shoulder 29.
• the means for connecting the lid 22 to the container 20 comprise a peripheral groove 30 arranged at the lower periphery of the lower portion 27 of the outer body 25.
• the peripheral groove 30 is intended to receive a seal sealing, not shown, intended to bear on a peripheral rim 31 arranged around the opening of the container 20.
• the inlet section 34 of the duct 24, defined by the cover 22, has at its connection to the primary separator 10 a generally annular shape, as shown in FIG. , and coaxial with the axis ⁇ , as is apparent from Figures 1 and 2.
• the cover 22 comprises a core 36 which is located inside the body 25 and partially closes the volume so as to define the connecting duct 24 which has a generally annular shape being located between the core 36 and the body 25.
• the connecting duct 24 therefore extends all around the core 36.
• the core 36 is hollow and is closed at its upper end located substantially at the inlet section 34 of the cover 22.
• the core 36 here has a frustoconical tubular conformation converging towards the top.
• the inlet section 34 has a lower surface than the surface of the outlet section 35 of the conduit 24 located at the connection thereof with the container 20.
• the outer wall of the connecting duct 24, defined by the inner wall of the body 25 diverges between the inlet section 34 and the outlet section 35.
• the divergence of the outer wall of the connecting pipe 24 is such that the inlet section 34 has a diameter d smaller than the smallest dimension D 'of the periphery of the outlet section 35.
• the core 36 is further rigidly connected to the outer body 25 by at least one and, according to the example shown, only a tongue 37 of connection whose rigidity ensures a perfect positioning of the core 36 coxially to the ⁇ axis.
• the annular shape of the inlet section 34 of the duct 24 is particularly suitable for the recovery of particles which are naturally projected outwards under the effect of centrifugal forces induced by the cyclone vortex of the primary separator 10.
• the annular shape of the duct 24, defined by the cover 22, prevents a viscous coupling between the air contained in the container 20 and the vortex air inside the separator primary 10.
• the occurrence of turbulence within the container 20 is limited which avoids a reintroduction into the primary separator 10 of the dust and waste that will accumulate in the container 20.
• the widening of the conduit 24 or its increase of section from the primary separator 10 to the container 20 contributes to a slowing of the air also reducing the risks of coupling and eddy.
• the latter is associated with a deflector 38 which extends from said connecting tongue 37 to the Inside the removable container 20.
• the deflector 38 has a convex outer surface and has an end portion inclined towards the direction of the removable container as shown in Figure 4.
• the deflector 38 also has an anti-eddy function by preventing the creation of a circular air movement inside the container 20.
• the core 36 comprises, according to the example illustrated, in its lower region a flat collar 40 against the backflow.
• This flange 40 is coplanar with the connecting tongue 37 and has a general shape substantially annular except for the region corresponding to the tongue 37.
• the flange 40 has an outer diameter D substantially equal to or greater than the outer diameter d of the inlet section of the cover as as shown in Figure 2.
• the lid 22 thus formed as an interface between the primary separator 10 and the container 20 during the operation of the vacuum optimizes the recovery of waste while reducing the risks recirculation of these.
• the cover 22 avoids, by providing a reduced inlet section relative to the maximum section of the container 20, the waste accumulated in the latter does not escape unexpectedly .
• the user can by opening the lid 22 largely open the opening of the container 20 and easily remove the accumulated waste for example by turning the container 20 over a trash can.
• locking means 41 comprising for example an elastically deformable hook system.
• the cover 22 is hinged to the container 20 by means of a hinge however, it could be envisaged that the cover 22 is simply fitted on the container 20 and can thus be completely separated.
• the portion 45 of the wall of the tubular body 15, located before the zone of connection to the cover 22, diverges more strongly than in the other regions of the body 15, so that the connection zone or lower part of the body 15 has an internal diameter greater than the internal diameter of the tubular body outside the connection zone.
• a kind of buffer zone 46 which induces a slowing down of the air and which is able to retain the waste to prevent recirculation before entering the conduit connecting the lid to the recovery tank.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Filters For Electric Vacuum Cleaners (AREA)
• Cyclones (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=43855988

Family Applications (1)

Country Status (7)

Cited By (1)

Citations (5)

Family Cites Families (3)

• 2010
  • 2010-11-04 FR FR1059111A patent/FR2967044B1/fr not_active Expired - Fee Related
• 2011
  • 2011-10-26 WO PCT/FR2011/052500 patent/WO2012059666A1/fr active Application Filing
  • 2011-10-26 KR KR1020137014188A patent/KR101829492B1/ko active IP Right Grant
  • 2011-10-26 ES ES11787739.9T patent/ES2549043T3/es active Active
  • 2011-10-26 EP EP11787739.9A patent/EP2635169B1/de active Active
  • 2011-10-26 CN CN201180053376.3A patent/CN103188979B/zh active Active
  • 2011-10-26 PT PT117877399T patent/PT2635169E/pt unknown

Patent Citations (5)

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