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
  • A47L5/24—Hand-supported 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
• • 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
  • A47L9/0081—Means for exhaust-air diffusion; Means for sound or vibration damping
• • 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
  • A47L9/1616—Multiple arrangement thereof
• • 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 battery-operated bagless hand vacuums using an electronically commutated motor (ECM) and comprising a cyclonic filter device.
• ECM electronically commutated motor
• the invention relates to a particular architecture of an air flow circuit for evacuating an air flow at the outlet of the engine.
• Hand vacuums are already known which comprise a main air intake duct as well as suction means generating a flow of air through the main air intake duct.
• These vacuum cleaners also comprise a cyclonic dust separation device aeraulically connected to the main suction duct and a secondary evacuation duct which is arranged to evacuate the air flow.
• Said secondary discharge duct is generally connected aeraulic to the cyclonic dust separation device and is arranged after it.
• An object of the present invention is to meet the drawbacks mentioned above and to provide an air flow circuit which makes it possible to minimize the pressure drops, to reduce the noise level of the vacuum cleaner, to cool the motor electronics, to direct the flow of air outlet and to guarantee the compactness of the hand-held vacuum cleaner.
• the invention relates to a hand-held vacuum cleaner comprising:
• a main body comprising a handle and a main air intake duct
• a cyclonic dust separation device with one or two stages, aeraulic connected to the main suction duct;
• a secondary air evacuation duct comprising an external outlet; characterized in that the secondary duct for discharging air comprises at least one passage in which said secondary duct forms a fold at an angle of between 120 ° and 200 ° and preferably 180 ° along a path axis.
• the secondary duct for evacuating the air flow is extended relative to the existing ducts which directly discharge the air out of the main body.
• This makes it possible to reduce the speed of the air flow at the outlet of the secondary evacuation duct and thus makes it possible to reduce at least part of the noise.
• the secondary air evacuation duct forms with the external outlet an angle of between 80 and 90 °.
• the main body comprises at least one main portion and a secondary portion and said main portion comprises a portion which is positioned under said secondary portion and said secondary portion comprises a central cone of revolution along a longitudinal axis. revolution directed towards the interior of the main body and which is positioned at least partly below the portion of the main part.
• Such a construction makes it possible to manufacture a secondary evacuation duct from the main body and thus to reduce the noise while maintaining the compactness of such a vacuum cleaner because it is not necessary to add a duct annex that would increase the size of such a vacuum cleaner.
• the main part comprises a first wall and the secondary part comprises a second wall and said first and second walls form the secondary evacuation duct.
• the hand-held vacuum cleaner comprises a motor which comprises an axis of revolution substantially parallel to the axis of revolution of the central cone of revolution.
• the cyclonic separation device comprises an axis of revolution which is substantially perpendicular to the axis of revolution of the cone or the engine.
• This characteristic has the effect of optimizing the compactness of the cyclonic separating device.
• the external outlet of said secondary discharge duct extends at an angle of between 10 ° and 300 ° around the axis of revolution of the cone.
• This characteristic has the effect of adapting the size of the external outlet to the quantity of air expelled.
• the external outlet of said secondary discharge duct forms a surface on the main body of between 5 and 20 cm 2 and preferably 16 cm 2 .
• the vacuum cleaner comprises a screen at the outlet of the main suction duct so as to divide the flow and to direct a portion of the air flow towards the secondary duct for evacuation of the air and another part to an electronic card so as to cool it.
• an acoustic foam is positioned in the secondary duct for evacuation of air.
• This foam has the effect of further reducing the speed of the air flow and thus reduce the noise.
• FIG. 1 shows a perspective view of a handheld vacuum cleaner according to the invention
• FIG. 2 shows a sectional view of the handheld vacuum cleaner
• FIG. 3 shows an enlargement of a part of Figure 2.
• a hand-held vacuum cleaner 1 is composed of a main body 2.
• This main body 2 comprises at one of its ends a main duct 6 for extracting air and at another end a secondary duct 8 evacuation of air.
• This secondary exhaust duct 8 comprises an external outlet 9.
• the main body 2 encloses suction means 7 generating a flow of air through the main suction duct 6. air and the secondary duct 8 for evacuation of air.
• the air is sucked by the main duct 6 of air intake and is rejected by the secondary duct 8 for discharging the air at the outer outlet 9.
• an acoustic foam (not shown) can be positioned in the secondary duct 8 air evacuation to further reduce the speed of air and therefore the noise.
• a handle 5 is attached to the main body 2. It allows a user to manipulate the vacuum cleaner 1 hand. In the embodiment of the invention, it is located under the main body 2 for good handling, but in other embodiments, not shown, it may be positioned elsewhere on the main body 2 .
• the hand vacuum cleaner 1 further comprises a device 4 cyclonic separation of dust. This can be one or more floors and it aims to separate and filter the dust.
• This cyclonic separation device 4 is attached to the main body 2. It is located below it so as to be perpendicular and aeraulically connected to the main suction duct 6.
• the cyclonic separation device 4 is arranged in a revolution around an axis of revolution ⁇ 3.
• the axis of revolution ⁇ 3 is substantially perpendicular to the main suction duct 6, as can be seen in FIG.
• the cyclonic separation device 4 is in one stage. In another embodiment, not shown, it can be two stages.
• the suction means 7 are composed of a motor 7.
• This motor 7 is positioned around and along an axis of revolution ⁇ 2.
• the axis of revolution ⁇ 2 of the engine is substantially in the length of the main body 2 so that the motor is oriented in the direction of travel of the air flow.
• this motor 7 is an electronically commutated motor (ECM).
• the main body 2 is composed of at least one main portion 12 and a secondary portion 13.
• the main part 12 comprises a portion 14 which is descending, that is to say which slopes inwardly or in the center of the main body 2.
• This portion 14, like the main part 12, is at least partly substantially circular as shown in Figure 1. In other words, this portion stretches at least at an angle between 10 ° and 300 ° around the axis of revolution ⁇ 2.
• the portion 14 is positioned under the secondary portion 13.
• the secondary portion 13 comprises a cone 15 which has a revolution along an axis of revolution ⁇ 1.
• the axis of revolution ⁇ 1 is substantially parallel to the axis of revolution ⁇ 2 of the motor 7 so that the cone 15 is positioned in the center of the secondary portion 13.
• This cone 15 will be called cone 15 of central revolution thereafter.
• the top of the cone 15 is directed towards the interior of the main body 2.
• the cone 15 is positioned at least partly inside and in the center of the portion 14 of the main part 12. In this way the main part 12 and the secondary part 13 form the secondary duct 8 for evacuating the air towards the outer outlet 9.
• the main part 12 (including the portion 14) comprises a first wall 16 which corresponds to the surface of the duct 8 secondary air evacuation on which leans air to exit.
• the secondary part 13 comprises a second wall 17 which corresponds to the surface of the duct 8 secondary air evacuation on which is also to rely the air to be evacuated. It is more precisely these walls which form the secondary duct 8 for evacuation of the air.
• This comprises a passage 10 which forms a fold 1 1 at an angle ⁇ between 120 ° and 200 °.
• This fold 1 1 forms a baffle which forces the air, which passes through the secondary exhaust duct 8, to make a substantially complete turn, that is to say a turn (or baffle) at an angle between 120 ° and 200 °.
• this turn occurs around an axis of trajectory A.
• This axis of trajectory A is directed along the portion 14 of the main portion 12, as can be seen in FIG. this turn is to increase the surface of the walls in contact with the air flow and thus to increase the friction of the air with the walls which slows down the speed of the air.
• the idle air arrives via the secondary air outlet duct 8 at the outer outlet 9.
• This outer outlet 9 corresponds to a gap formed between the main portion 12 and the secondary portion 13 along the periphery of the main body 2.
• the separation between the two parts is on average 1 cm. It can also be narrower or wider.
• the external outlet 9 of said secondary discharge duct 8 extends at an angle of between 10 ° and 300 ° around the axis of revolution ⁇ 2.
• the outer outlet 9 forms a plane P.
• Said plane P corresponds to a plane P tangent to the main body 2 and is positioned between the outer ends of the walls of the secondary discharge duct 8 at the outer outlet 9.
• the plane P and the secondary discharge duct 8 form between them an angle ⁇ which is between 80 and 90 ° so that the air operates a perpendicular turn in the duct 8 secondary evacuation.
• the air flow exits substantially perpendicular to the main body 2, which makes it possible to direct the flow in a direction other than towards the user.
• the outer outlet 9 of said secondary discharge duct 8 extends along the main body 2.
• the outer outlet 9 extends at an angle of 300 ° around the axis of revolution ⁇ 1 and the surface occupied by the outer outlet 9 is 16 cm 2 .
• the hand-held vacuum cleaner 1 comprises an electronic card 19 which is positioned in the main body 2.
• the hand-held vacuum cleaner 1 further comprises a screen 18 at the outlet of the main suction duct 6. This is used to divide the air flow and to direct a portion of the air flow to the secondary air duct 8 and another part to the electronic card 19 so as to cool it.
• the part of the air flow incident on the electronic card 19 has a speed of between 6 and 15 m. s "1 which allows to cool the components most sensitive to temperature constraints.

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

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=55806494

Family Applications (1)

Country Status (6)

Cited By (5)

Families Citing this family (9)

Citations (5)

Family Cites Families (12)

• 2015
  • 2015-12-23 FR FR1563160A patent/FR3046046B1/fr active Active
• 2016
  • 2016-12-16 EP EP16204881.3A patent/EP3184011B1/fr active Active
  • 2016-12-16 ES ES16204881T patent/ES2869950T3/es active Active
  • 2016-12-16 KR KR1020187020466A patent/KR102617201B1/ko active IP Right Grant
  • 2016-12-16 WO PCT/FR2016/053530 patent/WO2017109360A1/fr active Application Filing
  • 2016-12-19 CN CN201611174972.8A patent/CN106901651B/zh active Active
  • 2016-12-19 CN CN201621391824.7U patent/CN206979439U/zh not_active Expired - Fee Related

Patent Citations (5)

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