EP3222182A1 - Fussbodenpflegedüse - Google Patents

Fussbodenpflegedüse Download PDF

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Publication number
EP3222182A1
EP3222182A1 EP16162190.9A EP16162190A EP3222182A1 EP 3222182 A1 EP3222182 A1 EP 3222182A1 EP 16162190 A EP16162190 A EP 16162190A EP 3222182 A1 EP3222182 A1 EP 3222182A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
mass
floor care
masses
nozzle housing
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.)
Withdrawn
Application number
EP16162190.9A
Other languages
English (en)
French (fr)
Inventor
Bas de Wit
David SCHIPPERS
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips NV
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 Koninklijke Philips NV filed Critical Koninklijke Philips NV
Priority to EP16162190.9A priority Critical patent/EP3222182A1/de
Priority to RU2018130085A priority patent/RU2676620C1/ru
Priority to PL17712789T priority patent/PL3386362T3/pl
Priority to CN201780008033.2A priority patent/CN108601494B/zh
Priority to EP17712789.1A priority patent/EP3386362B1/de
Priority to UAA201808086A priority patent/UA124097C2/uk
Priority to PCT/EP2017/057056 priority patent/WO2017162850A1/en
Publication of EP3222182A1 publication Critical patent/EP3222182A1/de
Withdrawn legal-status Critical Current

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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
    • A47L9/02—Nozzles

Definitions

  • the invention relates to a floor care nozzle, and to a vacuum cleaner provided with such a floor care nozzle.
  • Some floor care nozzles appear to produce an audible rattle when used on certain carpets.
  • the invention is based on the following insights.
  • the disturbing phenomenon when using prior art nozzles exposes itself as a vertical oscillation of the nozzle head during backwards stroke in a single hinge nozzle, or a hopping behavior in double-hinge nozzles.
  • Merely adding mass to the nozzle appeared to have no effect in the disturbing phenomenon.
  • a further study revealed that the oscillation starts when an impulse (in this case a starting velocity given by the carpet) is put onto the nozzle.
  • the nozzle starts to move away from the carpet at this velocity, but is slowed down by gravitational pull and vacuum generated by the vacuum cleaner fan. These forces create a negative vertical acceleration, with which the time to land can be calculated. When landed, the nozzle will get another vertical push from the carpet, and start on its next jump.
  • the nozzle With every landing, the nozzle is pushed into the carpet harder, creating more force on the front rim, giving it more frictional force to create an even higher starting velocity with the net jump. It appeared that the mass of the nozzle itself does have no effect on this phenomenon, and that the frequency of the nozzle is dependent on the height of the jumps (or starting vertical velocity). It also appeared that (in combination with the increasing vertical impulse with every jump) the nozzle will tend to start out with a high frequency jump with just small jumping height, but will quickly move to high jumps with a low frequency. Based on these considerations, the invention is based on the insight that by counteracting the high frequency, low amplitude jumps at the beginning of the movement of the nozzle, it becomes possible to prevent the high jumps, low frequency motion from occurring later on. The main element to prevent this high frequency motion from occurring is a free mass within the nozzle.
  • Fig. 1 illustrates the phenomenon addressed by the invention, by showing 4 sequential phases in the movement of a nozzle when dragged backwards (dragging force F drag ) on a carpet.
  • the first picture shows an impulse force F imp (e.g. caused by an unevenness in the carpet), which results in an upwards movement of the nozzle that is shown in the second picture.
  • F imp e.g. caused by an unevenness in the carpet
  • the increased impulse force F imp shown in the third picture will result in an ever higher jump as shown in the last picture.
  • Fig. 2 illustrates the principle underlying the invention. The following steps can be identified.
  • Step 1 The vacuum force F vac and gravity force F grav want to keep the nozzle to the ground.
  • the nozzle mass M and the free mass m are launched into the air by an unevenness in the carpet (impulse Imp), while the nozzle is dragged over the carpet.
  • Step 2 Nozzle & free mass fly through the air together, and experience mainly the gravitational force F grav .
  • Step 3 When the nozzle gets closer to the ground, it will experience the vacuum force F vac again, which pulls it down faster.
  • the free mass m inside the nozzle does not experience this vacuum, hence it starts lagging behind in motion, creating a gap between the nozzle and the free mass m.
  • Step 4 After touchdown of the nozzle, the nozzle is launched back into the air again by the carpet force Imp, but quite early meets the free mass m, which was still on its way down.
  • Step 5 The collision between the nozzle and the free mass m will send the nozzle back to the ground again. In this way, the amplitude of the nozzle movement is kept small, hence the kinetic energy the free mass needs to have can remain quite small (since it only has to dampen out small oscillations of the nozzle).
  • the mass can a solid or liquid form.
  • the containment of the liquid should be secured.
  • the main advantage is that the element size is rather small and best reacts on impulses. When applying a liquid, the viscosity can be of influence.
  • steel spheres or rods are used as free mass m, which have a solid structure that is easier to contain in position within a nozzle housing construction.
  • the element size does not seem to be very relevant.
  • the dynamic behavior is approximately the same in large or small members. Tests have been performed with 4 relatively big steel spheres (diameter 12 mm, and total weight 27 g), and with about 90 small steel spheres (diameter 3 mm, and same total weight 27 g). Both have equal performance. Therefore, from a logistic and assembly point of view, the preference is to use a relatively low number (e.g. 3 or 4) of relatively large free masses m.
  • Fig. 3A shows an embodiment of a nozzle in accordance with the invention, in which HS indicates a nozzle housing HS.
  • a disadvantage of the free masses is that these can rattle when they move within their containers.
  • Another solution could be to encapsulate the mass objects themselves in a damping layer such as rubber, as shown in Fig. 3B .
  • the most optimal and economic execution could be to use a steel cylinder as mass m.
  • the benefit of this steel cylinder is that the top and bottom surfaces are flat, and these surfaces can be equipped with a very thin layer of absorbing material DE to reduce the audible effect of the free masses m colliding with the plastic nozzle housing parts, as shown in Fig. 3C .
  • containers C are provided, within which a free mass m can be positioned.
  • the containers C have a cylinder shape.
  • the shape of the free masses m to be put into cylindrical mass containers C can be a cylinder or a sphere.
  • the top cover can seal the compartment, securing that the free mass m will always stay in place.
  • the number of containers C may vary between 3 and 6, depending on the applied masses or total weight.
  • the invention provides a floor care nozzle comprising a nozzle housing HS, in which a mass m is vertically movable.
  • the nozzle housing HS is provided with a damping element DE at a place where the mass m collides with the nozzle housing HS, or the mass m is provided with a damping element DE.
  • a total weight of the mass m is at least about 10% of a weight of the nozzle.
  • the mass m comprises a plurality of masses m distributed over a width of the nozzle housing HS, wherein the number of masses m could be at least 3 and at most 6.
  • the nozzle housing HS comprises a plurality of containers C in which respective masses m can move, which are advantageously placed at a front end of the nozzle housing HS.
  • a vacuum cleaner is advantageously provided with the nozzle of the present invention.
  • the mass m should be allowed to move with a vertical motion component.
  • the mass m moves vertically.
  • deviations from a purely vertical movement are perfectly possible (and even desired if this results in making the container C better fit in within a desired overall outer shape of the nozzle design), as long as it is ensured that the mass m is able to counteract undesired movements of the nozzle, i.e. the movement of the mass m has a sufficiently large component in a direction of an undesired movement of the nozzle.
  • the mass m could be mounted to an arm that may rotate around e.g.
  • the hinge H this will still result in that the mass m can move with a vertical motion component so as to counteract undesired movements of the nozzle.
  • a rotating movement of the mass m may be the best way to counteract a hopping undesired movement of a double-hinge nozzle.
  • any reference signs placed between parentheses shall not be construed as limiting the claim.
  • the word “comprising” does not exclude the presence of elements or steps other than those listed in a claim.
  • the word “a” or “an” preceding an element does not exclude the presence of a plurality of such elements.
  • several of these means may be embodied by one and the same item of hardware. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Nozzles (AREA)
EP16162190.9A 2016-03-24 2016-03-24 Fussbodenpflegedüse Withdrawn EP3222182A1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP16162190.9A EP3222182A1 (de) 2016-03-24 2016-03-24 Fussbodenpflegedüse
RU2018130085A RU2676620C1 (ru) 2016-03-24 2017-03-24 Насадка для очистки пола
PL17712789T PL3386362T3 (pl) 2016-03-24 2017-03-24 Ssawka do pielęgnacji podłóg
CN201780008033.2A CN108601494B (zh) 2016-03-24 2017-03-24 地面护理喷嘴
EP17712789.1A EP3386362B1 (de) 2016-03-24 2017-03-24 Fussbodenpflegedüse
UAA201808086A UA124097C2 (uk) 2016-03-24 2017-03-24 Насадка для догляду за підлогою
PCT/EP2017/057056 WO2017162850A1 (en) 2016-03-24 2017-03-24 Floor care nozzle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16162190.9A EP3222182A1 (de) 2016-03-24 2016-03-24 Fussbodenpflegedüse

Publications (1)

Publication Number Publication Date
EP3222182A1 true EP3222182A1 (de) 2017-09-27

Family

ID=55628884

Family Applications (2)

Application Number Title Priority Date Filing Date
EP16162190.9A Withdrawn EP3222182A1 (de) 2016-03-24 2016-03-24 Fussbodenpflegedüse
EP17712789.1A Active EP3386362B1 (de) 2016-03-24 2017-03-24 Fussbodenpflegedüse

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP17712789.1A Active EP3386362B1 (de) 2016-03-24 2017-03-24 Fussbodenpflegedüse

Country Status (6)

Country Link
EP (2) EP3222182A1 (de)
CN (1) CN108601494B (de)
PL (1) PL3386362T3 (de)
RU (1) RU2676620C1 (de)
UA (1) UA124097C2 (de)
WO (1) WO2017162850A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2858560A (en) * 1953-07-30 1958-11-04 Jr Albert G Bodine Pulsating suction cleaner with oscillating beater
GB910697A (en) * 1959-04-24 1962-11-14 Siemens Elektrogeraete Gmbh Improvements in or relating to suction cleaner nozzles
DE1503919A1 (de) * 1964-01-29 1970-11-05 Hans Wessel An einen Staubsauger anschliessbares Reinigungsgeraet

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3376598A (en) * 1963-04-27 1968-04-09 Hans Wessel Cleaning appliance for attachment to a vacuum cleaner
CN101511251B (zh) * 2006-09-05 2011-04-13 Bsh博施及西门子家用器具有限公司 用于硬地面的地面喷嘴
WO2014010668A1 (ja) * 2012-07-11 2014-01-16 Kawamura Keiichi ホース連結具、モップ吸引具、電気掃除機、及びボール弁
GB2522915B (en) * 2014-02-10 2016-05-25 Dyson Technology Ltd Vacuum cleaner tool

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2858560A (en) * 1953-07-30 1958-11-04 Jr Albert G Bodine Pulsating suction cleaner with oscillating beater
GB910697A (en) * 1959-04-24 1962-11-14 Siemens Elektrogeraete Gmbh Improvements in or relating to suction cleaner nozzles
DE1503919A1 (de) * 1964-01-29 1970-11-05 Hans Wessel An einen Staubsauger anschliessbares Reinigungsgeraet

Also Published As

Publication number Publication date
CN108601494A (zh) 2018-09-28
EP3386362A1 (de) 2018-10-17
UA124097C2 (uk) 2021-07-21
EP3386362B1 (de) 2019-07-17
RU2676620C1 (ru) 2019-01-09
CN108601494B (zh) 2020-02-14
WO2017162850A1 (en) 2017-09-28
PL3386362T3 (pl) 2019-12-31

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