EP2817104A1 - Flächenreinigungskopf und strömungswiderstandselement für einen flächenreinigungskopf - Google Patents
Flächenreinigungskopf und strömungswiderstandselement für einen flächenreinigungskopfInfo
- Publication number
- EP2817104A1 EP2817104A1 EP12705132.4A EP12705132A EP2817104A1 EP 2817104 A1 EP2817104 A1 EP 2817104A1 EP 12705132 A EP12705132 A EP 12705132A EP 2817104 A1 EP2817104 A1 EP 2817104A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- resistance element
- flow resistance
- strip
- cleaning head
- bristle strip
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
- B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor
- B08B3/028—Spray guns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0064—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by temperature changes
- B08B7/0071—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by temperature changes by heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
- B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
- B08B2203/0229—Suction chambers for aspirating the sprayed liquid
Definitions
- the invention relates to a surface cleaning head for cleaning a surface, with a hood-shaped housing having a downwardly open cleaning chamber surrounded by a peripheral wall, in which at least one cleaning nozzle is freely rotatably mounted on a spray arm about a rotation axis for applying cleaning liquid to the cleaning surface, wherein on the peripheral wall a splash guard is arranged with a circumferential bristle strip.
- the invention relates to a flow resistance element for such a surface cleaning head.
- Surface cleaning heads of the type mentioned are known for example from DE 10 2010 003 079 AI and WO 2011/020492 AI. With their help, for example, a hard surface, especially a patio floor, a garage entrance or a garage door, be cleaned.
- the pressure line of a high-pressure cleaning device can be connected to the surface cleaning head.
- Pressurized cleaning liquid can then be supplied to the cleaning nozzle arranged on the at least one spray arm.
- the pressurized cleaning liquid can be applied to the surface to be cleaned.
- the cleaning nozzle undergoes a recoil, under the effect of the spray arm is rotated about the axis of rotation. This makes it possible to apply a relatively large area within a short time with cleaning liquid.
- a splash guard is arranged on the peripheral wall with a peripheral circumferential bristle strip.
- the surface cleaning head can be placed on the surface to be cleaned with the bristles.
- the bristle strip slides along the surface.
- the bristle strip may have a plurality of bristles which are densely packed.
- this has the disadvantage that the flexibility of the bristle strip is limited. If the surface cleaning head is moved along an uneven surface, for example along a paved floor, an inflexible bristle strip is in danger of becoming entangled in a unevenness, for example in a joint between two paving stones.
- the bristle strip has a high degree of flexibility and the risk of the bristle strip catching on a uneven floor can be reduced, but the bristle strip then also has a limited sealing effect, so that spray water from the cleaning space can escape.
- the surface cleaning head has a pumping device, with the aid of which the cleaning chamber can be pumped off while the surface to be cleaned is pressurized with cleaning fluid.
- a pumping device with the aid of which the cleaning chamber can be pumped off while the surface to be cleaned is pressurized with cleaning fluid.
- the object of the invention is to develop a surface cleaning head of the type mentioned in such a way that the permeability of the bristle strip for water spray and air can be reduced without the risk that the bristle entangled with a bump.
- the cleaning space is sealed not only by a bristle strip but additionally by a flow resistance element which extends in the circumferential direction along the bristle strip and bears for example on the inside or outside of the bristle strip.
- the flow resistance element extends in the axial direction with respect to the axis of rotation of the cleaning nozzle only over a portion of the bristle strip, so that a free edge region of the bristle strip protrudes in the direction of the surface to be cleaned via the flow resistance element.
- the flow resistance element counteracts an air flow and a liquid flow through the bristle strip.
- the bristles of the bristle strip can therefore have a relatively low packing density. This gives the bristle strip a high flexibility, so that when sliding along a bump on the ground there is virtually no risk that the bristle strip hooked to the bump.
- the pumping device of such surface cleaning heads can be configured for example in the form of a jet pump, which can be acted upon by pressurized cleaning liquid.
- the jet pump may have a pump inlet channel in fluid communication with the cleaning chamber, which is connected via a mixing chamber with a capture channel, wherein upstream of the capture channel is acted upon with a pressurized cleaning liquid drive nozzle for forming a suction flow.
- the bristle strip protrudes in the direction of the surface to be cleaned 1 mm to 5 mm, preferably 2 mm to 3 mm, over the flow resistance element.
- the axial extent of the free edge region of the bristle strip is thus preferably 1 mm to 5 mm, in particular 2 mm to 3 mm.
- the flow resistance element is detachably connectable to the splash guard. This gives the user the opportunity to use the surface cleaning head optionally with the flow resistance element or without the flow resistance element. Especially with smooth surfaces, such as those used in sanitary areas, the use of the flow resistance element has proven itself. However, if the surface cleaning head is used for cleaning rough surfaces, in particular for cleaning rough bottom surfaces, then the flow resistance element can be removed from the bristle strip in order to avoid heavy wear of the flow resistance element.
- the splash guard comprises a arranged at the free edge of the peripheral wall retaining ring on which the bristle strip is held, wherein the flow resistance element surrounds the retaining ring in the circumferential direction and abuts the upper surface of the retaining ring facing away from the surface to be cleaned.
- the flow resistance element surrounds the retaining ring and rests on the upper side of the retaining ring facing away from the surface to be cleaned. It is thereby supported by the retaining ring in the direction of the surface to be cleaned. The risk that the flow resistance element inadvertently detached from the splash guard can be kept low.
- the flow resistance element rests not only on the upper side but also on the underside of the retaining ring.
- the flow resistance element preferably forms a positive connection with the retaining ring in such an embodiment and can thereby be reliably held on the retaining ring.
- the flow resistance element is advantageously elastically deformable.
- the flow resistance element may be configured, for example, in the manner of an elastically deformable sealing lip, which bears against the inside or on the outside of the bristle strip.
- the flow resistance element is elastically extensible. This makes it possible to connect the flow resistance element in a structurally simple manner with the splash guard, in particular with the retaining ring, releasably.
- the flow resistance element is profiled. This simplifies the production of a positive connection between the Flow resistance element and the splash guard, in particular the retaining ring.
- the flow resistance element is designed as a ring strip, which bears against the inside or on the outside of the bristle ring.
- the ring strip can, for example, cover the entire outside of the bristle ring with the exception of its free edge area.
- the ring strip is preferably formed slippery and is held by the splash guard, in particular of the retaining ring in the form.
- the annular strip is elastically stretchable and can be clamped on a rigid retaining ring and, if necessary, detachable from the retaining ring on which the bristle strip is held. If the ring strip to be connected to the splash guard, so he can be elastically stretched and clamped onto the rigid retaining ring of the splash guard.
- the bristle strip is held on the retaining ring and the annular strip extends in the axial direction with respect to the axis of rotation of the at least one cleaning nozzle so far in the direction of the surface to be cleaned that it completely covers the bristle strip on the inside or outside, with the exception of the free edge region of the bristle strip.
- the flow resistance element is impermeable to air.
- the flow resistance element is made of a rubber-elastic material.
- the invention relates not only to a surface cleaning head of the aforementioned type but also to a flow resistance element for a surface cleaning head for cleaning a surface, wherein the surface cleaning head comprises a hood-shaped housing having a peripheral wall, the one surrounds downwardly open cleaning chamber in which at least one cleaning nozzle is freely rotatably mounted on a spray arm about a rotation axis for applying cleaning liquid to the surface to be cleaned, wherein on the peripheral wall a splash guard is arranged with a circumferential bristle strip.
- a flow resistance element is provided according to the invention, which is releasably connectable to the splash guard and rests in the connected state on the bristle strip and extending over the periphery of the bristle strip, wherein a free edge of the bristle strip protrudes toward the surface to be cleaned via the flow resistance element.
- the flow resistance element can, if necessary, be connected to the splash guard and, if necessary, be released from it again.
- the flow resistance element is connected to the splash guard, it extends along the bristle strip in the circumferential direction, wherein a free edge of the bristle strip protrudes toward the surface to be cleaned via the flow resistance element.
- a free edge of the bristle strip protrudes toward the surface to be cleaned via the flow resistance element.
- the splash guard preferably has a rigid retaining ring on which the bristle strip is held.
- the flow restriction element is preferably configured as an elastically stretchable ring strip, which can be clamped onto the rigid retaining ring and surrounds the bristle strip in the circumferential direction.
- the elastically stretchable annular strip can be connected by the user in a simple manner, preferably without the use of a special tool, to the splash guard. For this purpose, it is only necessary to stretch the ring strip and réellespannen on the retaining ring.
- the annular strip extends in the axial direction with respect to the axis of rotation of the at least one cleaning nozzle beyond the retaining ring in the direction of the surface to be cleaned, wherein it surrounds the adjoining the retaining ring in the axial direction bristle strips with the exception of the free edge region in the circumferential direction.
- the ring strip is made of a rubber-elastic material.
- the ring strip is designed slippery. If the ring strip is clamped onto the rigid retaining ring, then it is brought into shape by the rigid retaining ring, whereas it does not have a stable shape without the rigid retaining ring. It is advantageous if the ring strip is impermeable to air. This ensures that foreign air can not flow through the bristle strip in the region in which the ring strip rests on the bristles. Only in the free edge region of the bristle strip is foreign air the opportunity to
- Figure 1 a schematic plan view of an advantageous embodiment of a surface cleaning head according to the invention; a sectional view of the surface cleaning head along the line 2- 2 of Figure 1, wherein a splash guard is connected to a flow resistance element; a sectional view of the surface cleaning head along the line 3- 3 in Figure 1, wherein the splash guard is connected to the flow resistance element;
- FIG. 4 shows an enlarged view of detail A from FIG. 3 and FIG.
- Figure 5 a sectional view of the surface cleaning head according to FIG.
- FIG. 10 an advantageous embodiment of a surface cleaning head according to the invention is shown schematically, which is generally occupied by the reference numeral 10.
- the surface cleaning head 10 has a hood-like housing 12, which is designed in the plan view shown in Figure 1 substantially triangular with rounded corners.
- the housing 12 includes a ceiling wall 14, at the outer edge of a Exterior wall 16 connects. At a distance from the outer wall 16 is from the ceiling wall down from a circular cylindrical peripheral wall 18, which surrounds a cleaning room 20. Die tradesraum 20 ist in der Zeichnungjanjan.
- - support wheels 22, 23, 24 are arranged with which the surface cleaning head 10 can be supported on a surface 25 to be cleaned and with which the surface cleaning head 10 at the can be moved to cleaning surface 25 along.
- a distributor unit 28 is arranged with a distribution line 30, whose longitudinal axis 31 is aligned perpendicular to the cylinder axis 32, which is defined by the cylindrical peripheral wall 18.
- the distributor unit 28 forms a bearing element, on which a supply line 33 is mounted pivotably about the longitudinal axis 31 of the distribution line 30.
- the supply line 33 carries a connecting element 34 to which, for example, a spray lance of a high-pressure cleaning device known per se and therefore not shown in the drawing can be connected.
- the supply line 33 opens into the distribution line 30, which is aligned coaxially with the cylinder axis 32, a first branch line 36 connects, which dips into the cleaning chamber 20 and carries at its free end two diametrically opposed spray arms 37, 38. At their free end, the two spray arms 37, 38 each carry a cleaning nozzle 39, 40.
- the cleaning nozzles 39, 40 By means of the cleaning nozzles 39, 40, the surface 25 to be cleaned can be sprayed in the area surrounded by the peripheral wall 18 with pressurized cleaning liquid.
- the cleaning nozzles 39, 40 generate an obliquely downwardly directed liquid jet, which exerts a torque on the spray arms 37, 38 at the outlet from the cleaning nozzles 39, 40 and thereby sets them about the cylinder axis 32 in rotation.
- the distribution line 30 is in flow communication with a jet pump 45.
- the jet pump 45 comprises a motive nozzle 46, which is fixed to a nozzle holder 48.
- the nozzle holder 48 is inserted into a pumping channel 50 and mechanically connected thereto. In the illustrated embodiment, the nozzle holder 48 is latched to the pumping channel 50.
- the pumping channel 50 extends from a lateral opening 52 of the peripheral wall 18 with the longitudinal axis 53 aligned radially with respect to the cylinder axis 32 through the outer wall 16, so that it protrudes outwards beyond the housing 12.
- the drive nozzle 46 is adjoined in the pumping channel 50 by a frusto-conical mixing chamber 55, which tapers conically in the direction away from the cleaning chamber 20.
- the mixing chamber 55 is adjoined by a cylindrical catching channel 57, to which a diffuser 59 adjoins in the direction facing away from the cleaning chamber 20 and widens conically.
- the diffuser 59 is surrounded by an annular space 61 into which a pipe socket of a coupling device 63 can dip, with the aid of which an outlet hose 65 can be connected to the surface cleaning head 10.
- pressurized cleaning liquid preferably water
- pressurized cleaning liquid can be applied to the surface 25 to be cleaned by means of the cleaning nozzles 39, 40.
- a splash guard 67 is arranged with a rigid retaining ring 69 which is fixed to the peripheral wall 18 and on which a bristle St mature 71 is held in the axial direction relative to the cylinder axis 32 extends to the surface 25 to be cleaned.
- the bristle strip 71 By means of the bristle strip 71, the cleaning chamber 20 can be sealed against the surface 25 to be cleaned and the escape of spray water from the cleaning chamber 20 can be prevented.
- the retaining ring and, with the exception of a free edge region 73, of the bristle stiffeners 71 are completely surrounded by a flow resistance element in the circumferential direction is formed in the darg Marieen embodiment as a self-contained, elastically stretchable annular strip 75 which is elastically extensible and is made of a rubber-elastic material.
- the annular strip 75 can be clamped onto the rigid retaining ring 69, wherein it is stretched, so that it then acts on the retaining ring 69 with a radially inwardly directed clamping force.
- the annular strip 75 forms with the rigid retaining ring 69 on the outside a positive connection.
- the annular strip 75 forms at the level of the retaining ring 69 is a U-shaped profile 77 which rests with an upper leg 79 on the upper side 80 of the retaining ring 69 and a lower leg 81 on the underside 82 of the retaining ring 69 and with a Upper leg 69 integrally connected to the lower leg 80 web 84 completely surrounds the retaining ring 69 in the circumferential direction.
- a collar 86 of the ring strip 75 adjoins the U-profile 77, which rests against the outside of the bristle strip 71 and surrounds it completely in the circumferential direction.
- the free edge region 73 of the bristle strip 71 projects beyond the lower end 87 of the collar 86, so that the free edge region 73 is not surrounded by the annular strip 75.
- the annular strip 75 is configured as an independent, non-rigid component, which can be connected as required to the splash guard 67 and separated from it again.
- the surface cleaning head 10 is shown with the annular strip 75.
- the surface cleaning head 10 is particularly suitable for cleaning smooth surfaces, for example for cleaning industrial floors.
- pressurized cleaning liquid can be applied by means of the cleaning nozzles 39, 40 on the surface 35 to be cleaned and by means of the jet pump 75, the applied cleaning liquid can be pumped out of the cleaning chamber 20 via the outlet hose 65.
- a negative pressure is formed in the cleaning chamber 20, and foreign air can flow through the free edge region 73 of the bristle strip 71, wherein liquid applied to the surface 25 is entrained by the foreign air flowing radially into the cleaning chamber 20 and reliably via the outlet hose 65 can be sucked off.
- the annular strip 75 thus limits the flow of foreign air through the bristle strip 71 and ensures that an effective negative pressure can form in the cleaning chamber 20.
- the surface cleaning head 10 is to be used for cleaning a rough surface, for example for cleaning a paved driveway or a paved garage entrance, the user can detach the elastically stretchable annular strip 75 from the splash guard 67 without the aid of a special tool.
- the user has to extend the ring strip 75 only slightly in the radial direction in order to then be able to remove it from the rigid retaining ring 69.
- FIG. 5 shows the surface cleaning head 10 with annular strip 75 removed from the splash guard 67.
- the use without ring strip 75 is particularly advantageous for very uneven ground surfaces, because the bristle strip 71 can be provided with bristles, which have a relatively low packing density and therefore the bristles st mature 71 give a very high flexibility. There is therefore virtually no risk that the bristle strip hooked in the process along an uneven surface 25 with a bump.
Landscapes
- Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
- Cleaning In General (AREA)
- Nozzles For Electric Vacuum Cleaners (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2012/052846 WO2013123962A1 (de) | 2012-02-20 | 2012-02-20 | Flächenreinigungskopf und strömungswiderstandselement für einen flächenreinigungskopf |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2817104A1 true EP2817104A1 (de) | 2014-12-31 |
| EP2817104B1 EP2817104B1 (de) | 2023-04-05 |
Family
ID=45722647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12705132.4A Active EP2817104B1 (de) | 2012-02-20 | 2012-02-20 | Flächenreinigungskopf und strömungswiderstandselement für einen flächenreinigungskopf |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2817104B1 (de) |
| CN (1) | CN104114292B (de) |
| DK (1) | DK2817104T3 (de) |
| WO (1) | WO2013123962A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202014105382U1 (de) | 2014-11-10 | 2014-11-18 | Vorwerk & Co. Interholding Gmbh | Dichtungsvorrichtung fürein Reinigungsgerät sowie Reinigungsgerät, insbesondere Haushalts-Bodenreinigungsgerät |
| CN104305937B (zh) * | 2014-11-11 | 2017-02-15 | 李开成 | 床下清扫装置 |
| GB2560366A (en) * | 2017-03-09 | 2018-09-12 | Kaercher Gmbh & Co Kg Alfred | Improvements relating to robotic cleaning systems and robots therefor |
| EP3977893A1 (de) * | 2020-10-01 | 2022-04-06 | Koninklijke Philips N.V. | Bürste zur verwendung in einer reinigungsvorrichtung zum reinigen von oberflächen |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3832069A (en) * | 1972-02-02 | 1974-08-27 | Chaska Chem Co Inc | Cleaning apparatus |
| US4290160A (en) * | 1980-01-21 | 1981-09-22 | Daniels Larry K | Rotary brush |
| DE4118708C1 (de) * | 1991-06-07 | 1992-08-20 | Zachhuber Kurt | |
| CN2282851Y (zh) * | 1995-08-07 | 1998-06-03 | 张宁祥 | 电动洗刷器 |
| US5711051A (en) * | 1996-04-01 | 1998-01-27 | Professional Chemicals Corporation | Hard surface cleaning appliance |
| US6205607B1 (en) * | 1999-12-01 | 2001-03-27 | Robert W. Tse | Water driven cleaning device with double cleaning action |
| CN1586383A (zh) * | 2004-08-03 | 2005-03-02 | 陈宝忠 | 刷洗器 |
| DE102008011506A1 (de) * | 2008-02-22 | 2009-08-27 | Alfred Kärcher Gmbh & Co. Kg | Flächenreinigungskopf |
| BR112012003594A2 (pt) | 2009-08-17 | 2016-03-15 | Kaercher Gmbh & Co Kg Alfred | cabeçote de limpeza de superfície |
| DE102010003079A1 (de) | 2010-03-19 | 2011-09-22 | Alfred Kärcher Gmbh & Co. Kg | Flächenreinigungskopf und Flächenreinigungsanordnung |
| CN201840424U (zh) * | 2010-10-29 | 2011-05-25 | 熊猫通用机械集团有限公司 | 一种洗地刷 |
-
2012
- 2012-02-20 DK DK12705132.4T patent/DK2817104T3/da active
- 2012-02-20 WO PCT/EP2012/052846 patent/WO2013123962A1/de not_active Ceased
- 2012-02-20 CN CN201280069980.XA patent/CN104114292B/zh active Active
- 2012-02-20 EP EP12705132.4A patent/EP2817104B1/de active Active
Non-Patent Citations (2)
| Title |
|---|
| None * |
| See also references of WO2013123962A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013123962A1 (de) | 2013-08-29 |
| EP2817104B1 (de) | 2023-04-05 |
| CN104114292A (zh) | 2014-10-22 |
| CN104114292B (zh) | 2017-05-31 |
| DK2817104T3 (da) | 2023-05-30 |
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