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
  • 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
  • A47L5/28—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle
  • A47L5/30—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle with driven dust-loosening tools, e.g. rotating brushes
• • 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
  • A47L9/009—Carrying-vehicles; Arrangements of trollies or wheels; Means for avoiding mechanical obstacles
• • 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
  • A47L9/22—Mountings for motor fan assemblies

Definitions

• the invention relates to an electric floor cleaning brush comprising a parallelepiped-shaped overall housing having means for moving on the ground and comprising a suction nozzle equipped with at least one brush which is rotated by a motor means and whose periphery comes into contact with the ground, a dust compartment enclosing a filter and delimited by at least one transverse front wall having an opening which comes into communication with the suction nozzle and a transverse rear wall having an opening outlet in communication with a suction port in a casing enclosing a centrifugal fan driven by a motor and having a delivery port arranged in a direction transverse to that of the suction port and through which the air is rejected outside the case.
• Cleaning brushes are already known, such as those described in US Pat. No. 5,500,979, in which the motor-fan unit comprises a fan casing arranged along a horizontal axis and having a suction orifice communicating with the dust compartment according to a low section.
• the housing must have at this level a certain height corresponding at least to the outer diameter of the fan housing and therefore a large size, but also that dust extraction being limited to a small section, the distribution of dust in a filter element of the compartment is uneven and can cause a rapid clogging at the suction port.
• Brushes of the type described in US Pat. No. 5,664,285 have also been proposed, in which the motor-fan unit is of the centrifugal type arranged in a casing along a horizontal axis and the suction orifice of which is located opposite an element. filter attached to the dust compartment.
• these brushes having a motorized brush, are generally equipped with suction groups of a power significantly lower on the order of 80 W and, preferably with a single fan single stage.
• the invention therefore aims to overcome the drawbacks of the prior art by making an electric brush design very simplified, providing a great convenience of movement on all surfaces to be cleaned, even those located under some furniture, while achieving an optimization of the air circuit sucked and discharged to maximize the efficiency of the air flows generated by the motor-fan unit and through the brush and the dust compartment.
• the rear wall is arranged at a slight distance from the bottom of the filter, and the outlet opening opens into an intermediate and tubular chamber with a vertical axis whose upper region has an outlet that fits tightly at the suction port of the housing, so that said housing is positioned flat above the housing
• an intermediate chamber allows not only to create a low-pressure airflow regulation volume, but also to fix the casing directly on the housing with the fan axis oriented in one direction. substantially vertical.
• the broom may have a low height housing allowing it to go under furniture such as beds.
• the intermediate chamber contains the fan drive motor which comprises a carcass of cylindrical general shape whose horizontal section is smaller than that of the section of the suction chamber and thus providing an annular space for guiding the sucked air.
• the fan drive motor which comprises a carcass of cylindrical general shape whose horizontal section is smaller than that of the section of the suction chamber and thus providing an annular space for guiding the sucked air.
• Figure 1 is a vertical and longitudinal sectional view of a brush according to the invention
• Figure 2 is a top view of Figure 1, after removal of an upper portion of the housing.
• an electric floor cleaning brush comprising an aesthetic cover 1 schematically broken lines and covering a housing 2 of parallelepiped general shape having means for moving on the ground. These means comprise at least two lateral wheels R located in the rear region of the housing.
• the housing 2 comprises a suction nozzle 3 equipped with at least one brush 4 which is rotated by a motor means 5 and whose periphery comes into contact with the ground.
• the brush 4 is unique and of the roller type horizontal extending transversely over almost the entire width of the housing, and the nozzle 3 is further supported by two small side wheels 6 maintaining an appropriate contact distance between the brush and the ground.
• the housing 2 is formed by at least two shells with lower walls 7 and upper 8 thus delimiting between them and transverse and longitudinal partitions various compartments.
• the housing comprises a dust compartment 9 enclosing a filter 10 and delimited by the walls 7 and 8 of the upper and lower shells, and by at least one transverse front wall 11 having an opening 12 which comes into communication with the nozzle 3 and a transverse rear wall 13, having an outlet opening 14 in communication with a suction orifice 15 formed in a casing 16 enclosing a fan 17 of the centrifugal type driven by a motor 18.
• the casing also has an orifice of delivery 19 arranged in a direction transverse to that of the suction port 15 and through which the air is rejected outside the housing.
• the housing further comprises a technical compartment 20 arranged in the rear end portion of this housing and one of the transverse partitions is constituted by the rear wall 13; the other transverse wall 21 and the side walls being constituted by the peripheral wall of the housing.
• motor means 5 comprising a motor 22 and a belt 23, the technical compartment 20 includes, on the one hand, the engine
• a rechargeable electric accumulator 25 for supplying the motors 18 and 22.
• the battery could be replaced by a transformer adapted to the power supply of the motor and powered by an electrical cord adapted to be connected to the sector, but this embodiment is less attractive because of the loss of autonomy of the broom.
• the rear wall 13 is arranged at a slight distance from the filter 10, and the outlet opening 14 opens into an intermediate and tubular chamber 26 with a vertical axis whose upper region has an outlet 27 which comes adapt, in a sealed manner, to the suction port 15 of the housing 16, so that said housing is positioned flat above the housing 2 and under the hood 1.
• the rear wall 13 has, at practically its entire height, at the level of the outlet opening 14, a recess extending out of the dust compartment to form the intermediate chamber 26.
• the intermediate chamber 26 contains the motor 18 for driving the fan 17 which comprises a carcass 28 of generally cylindrical shape whose horizontal section is smaller than that of the section of the chamber 26 thus providing an annular space 29 for guiding the sucked air. Thanks to this combination of intermediate chamber and engine plunging into this chamber, the tests carried out demonstrate a better laminar flow of air in the dust compartment until its recovery in the annular space, and an excellent efficiency of the fan obtained. by the vortex channeled in a vertical direction in said annular space According to a preferred embodiment and for the purpose of compact design of the constructive elements of the blade, the intermediate chamber 26 is located transversely in the extension of the technical compartment 20.
• the broom and constructed provides a compact structure grouping in a single housing, and in a longitudinal direction, the nozzle adjacent to the dust compartment, itself adjacent to the technical compartment
• the wheels R have their axis arranged substantially in a vertical plane passing through the axis of the motor 18 and the fan.
• the invention provides for giving the filter 10 a particular structure in order to provide a large filtration surface while preserving an air space around this filter to prevent in particular its saturation and thus delay to the maximum its clogging.
• the filter 10 has a generally pyramid-shaped trunk whose large base 30 is mounted adjacent and sealingly to the transverse front wall 11 of the dust compartment, and whose small base 31 is located at a distance from the posterior wall 13 of said compartment, thus providing a substantial space especially between the upper 8 and lower walls 7 of said compartment.
• this space grows from the anterior wall to the posterior wall without interruption
• the latter is removably mounted in the dust compartment, for example by a sliding system (not shown) in a transverse direction and can be extracted from said compartment through a light arranged in the lateral peripheral wall of the housing and equipped with a small pivoting door on the housing.
• the broom thus constructed can operate with a centrifugal fan of conventional type as described above, but also with a particular type of fan and preferred as shown in the figures.
• the fan is of the type described in patent FR 2826851 filed by the Applicant and comprises a flattened hollow body 32 open on its periphery and driven in rotation by the motor. 18 in the casing 16.
• Said hollow body is formed of two flanges 33 and 34 trapping a set of blades 35 and one of which is in the form of a truncated cone with a curved sidewall whose small base has an axial hole.
• the casing has an upstream portion 37 in volute centered on the axis of the fan with its suction orifice 15 fitted on the axial hole 36 and its orifice discharge nozzle 19 opening into a diverging downstream portion 38.
• This divergent downstream portion is provided with longitudinal internal partitions, not shown, for dividing and slowing the flow of outgoing air.
• Other embodiments of the invention may be envisaged without departing from the scope of the invention.
• it can be provided to replace the horizontal brush by two brushes with vertical or inclined axis located respectively on each side of the mouth of the nozzle.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Nozzles For Electric Vacuum Cleaners (AREA)
• Cleaning In General (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=37441616

Family Applications (1)

Country Status (3)

Families Citing this family (1)

Family Cites Families (6)

• 2006
  • 2006-03-14 FR FR0602210A patent/FR2898480B1/fr not_active Expired - Fee Related
• 2007
  • 2007-03-14 WO PCT/FR2007/050926 patent/WO2007104896A2/fr not_active Ceased
  • 2007-03-14 EP EP07731742A patent/EP1996055A2/de not_active Withdrawn

Non-Patent Citations (1)

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