EP3768137A1 - Nass- und trockensauger - Google Patents
Nass- und trockensaugerInfo
- Publication number
- EP3768137A1 EP3768137A1 EP19711607.2A EP19711607A EP3768137A1 EP 3768137 A1 EP3768137 A1 EP 3768137A1 EP 19711607 A EP19711607 A EP 19711607A EP 3768137 A1 EP3768137 A1 EP 3768137A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wet
- vacuum cleaner
- dry vacuum
- inlet
- dirt container
- 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
-
- 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
- A47L7/00—Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids
- A47L7/0004—Suction cleaners adapted to take up liquids, e.g. wet or dry vacuum cleaners
- A47L7/0019—Details of the casing
-
- 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
- A47L9/12—Dry filters
-
- 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
- A47L9/24—Hoses or pipes; Hose or pipe couplings
- A47L9/248—Parts, details or accessories of hoses or pipes
Definitions
- the present invention relates to a wet and dry vacuum cleaner with a suction head, a dirt container and an inlet fitting designed for connection of a suction hose.
- the inlet fitting is fluidly connected to a wet and dry vacuum cleaner located in the wet and dry suction that sucked dirt particles can get into the dirt container via the inlet port.
- Wet and dry vacuum cleaner of the type mentioned are basically known from the prior art. They are used, for example, to extract dirt particles, as they typically occur when working with cut-off grinders.
- a suction hose is connected to the inlet fitting, which in turn is connected by way of example to a cut-off grinder.
- polluted water is sucked.
- dry applications only or mainly dry dirt particles are sucked in. The sucked mixture of dust and water or air is usually collected in a dirt container until the dirt container is emptied.
- the existing volume of the dirt container should be optimally utilized in order to maximize the amount of dust or water absorbed.
- the inlet nozzle is formed as a horizontal outflowing diffuser.
- the invention relates to an inlet nozzle for a wet and dry vacuum cleaner, the inlet nozzle being arranged in the wet and dry vacuum cleaner such that the suction flow flows essentially horizontally into the dirt container of the vacuum cleaner.
- the substantially horizontal inflow direction of the fluid-particle mixture of the suction flow preferably runs substantially parallel to a bottom surface of the dirt container, which likewise preferably runs essentially parallel to a substrate on which the wet and dry vacuum cleaner is installed.
- the invention includes the recognition that in wet and dry vacuum cleaners of the prior art, the inlet fitting and / or the inlet nozzle are typically placed in the suction head, whereby the existing volume of the dirt container can be optimally utilized.
- the inlet nozzle is typically directed directly into the dirt container, which has an unwanted up and swirling of the already sucked dirt particles in the dirt container result. It has been observed that this can lead to premature shutdown in wet applications and shorter filter life in dry applications.
- the inlet nozzle is designed according to the invention as a horizontal outflowing diffuser, these disadvantages can be avoided. Rather, a layered entry of dirt particles into the dirt container without turbulence in the dirt container is favored. As a result of the substantially stratified filling of the dirt container achieved in this way, it is advantageously possible for the volume available in the dirt container to be utilized even better than in the case of conventional wet and dry vacuum cleaners which are known from the prior art.
- the horizontally oriented inlet port represents a departure from the prior art, because the experts had previously assumed that optimum utilization of the existing volume in the dirt container can be achieved by an inclined arrangement of the inlet port, in which the inlet port in the volume of the dirt container points in or is arranged so that the dirt is directed in a spatial direction down into the dirt container.
- the spatial direction "downwards" means that the dirt is conducted in the direction of the bottom or an underside of the dirt container.
- the inner wall of the dirt container is a side wall of the dirt container.
- the inner wall does not necessarily have to be a side wall of the dirt container. Rather, the inner wall may also be another wall within the wet and dry vacuum, which is vertically oriented and / or whose surface is at least as large as a cross-sectional area of the diffuser opening of the inlet nozzle.
- the inlet nozzle designed as a diffuser has a diffuser opening whose wall distance from the inner wall is less than one fifth of the container width of the dirt container.
- a cross-sectional area of the diffuser opening is preferably at least 50% greater than a cross-sectional area of the inlet fitting in the region of the wall passage into the dirt container.
- the diffuser opening may, preferably exclusively, be arranged in the upper third of the dirt container. For smaller debris containers, the diffuser opening may preferably be present in an upper half of the container.
- the inlet connection formed as a diffuser is arranged in a volume defined by the dirt container.
- the inlet connection designed as a diffuser is arranged exclusively in the volume defined by the dirt container.
- the wet and dry vacuum cleaner has an electric turbine arranged in the suction head.
- the wet and dry vacuum cleaner may have a dirt filter which, based on the suction flow, is connected downstream of the inlet stub designed as a diffuser.
- the inlet nozzle formed in the diffuser is formed integrally.
- the formed as a diffuser inlet nozzle may be integrally formed on the dirt container.
- the inlet connection designed as a diffuser preferably consists of plastic or polymer.
- the invention in another aspect, relates to a y-shaped inlet port.
- the inlet connection has an end section in the region of the diffuser opening, the end section having an inlet opening for the suction flow, and an outlet zone comprising two outlet openings. Due to the two outflow openings of the discharge area of the end section of the inlet nozzle, the speed with which the suction stream is sucked into the dirt container can be considerably reduced.
- the suction flow is preferably formed by a fluid-particle mixture, wherein the fluid may be for example a gas or a gas mixture, such as air.
- the fluid may also be a liquid, such as water.
- the particles are preferably dust and sucked dirt.
- the formation of the inlet nozzle in Y-shape with two outflow openings causes the flow in the fluid-particle mixture to settle in such a way that a layered deposition of the particles in the dirt container is made possible.
- the inventors have recognized that such a layered or layered deposition of the dust or the dirt advantageously leads to an optimal utilization of the available volume in the dirt container.
- the inflow opening of the end section preferably forms the transition between the inlet connection piece and the end section.
- the suction flow enters the end section in the area of the inflow opening, the flow preferably being initially directed by the configuration of the end section against a rear wall or a bottom or a bottom side of the end section.
- the direction in which the suction inlet enters the end section is determined in particular by the arrangement of the inlet opening within the end section.
- the inflow opening is inclined relative to a substantially planar surface of the end section.
- the suction flow is sucked in particular against a transition region between the rear wall and the bottom of the end section, where the flow is decelerated by abrupt braking of the fluid-particle mixture.
- the rear wall or the bottom of the end portion acts as an inner wall within the dirt container, wherein the inner wall or the rear wall and / or the wall portion of the end portion are adapted to decelerate the suction flow when the suction flow is directed to the inner wall, the rear wall and / or the wall portions of the end portion. In this case, the fluid-particle mixture bounces off the walls, so that the velocity of the flow is substantially reduced.
- the end portion of the inlet nozzle may be referred to as an inflow device for dividing or expanding the suction flow or the fluid-particle mixture.
- the proposed end section constitutes an inflow distributor in Y-shape. Due to the preferred embodiment of the end section with an inflow opening and two outflow openings, the outflow volume can advantageously be significantly increased in comparison to the inflow volume. As a particular advantage of the invention, this results in that the flow velocity at the outflow openings is smaller than in the region of the inflow opening, so that an improved deposit behavior of the fluid-particle mixture can advantageously be achieved by the preferred design of the inlet stub.
- the inflow opening In connection with the inclined formation of the inflow opening, it is possible to define a surface normal that is perpendicular to the substantially planar surface of the end section. It is preferred within the meaning of the invention to define a further surface normal, which is perpendicular to a plane defined by the inflow opening. Preferably, the two surface normals thus defined enclose an angle which, within the meaning of the invention, is preferably referred to as the "inclination angle of the inflow opening".
- This Angle of the inlet opening may preferably be in a range between 5 and 30 degrees, preferably between 10 and 20 degrees, and more preferably at 15 degrees.
- the outflow openings each comprise a wall region, wherein the wall regions of the outflow openings are formed substantially parallel to the substantially planar surface of the end section of the inlet connection.
- the wall portions of the discharge openings form an outer end of the end portion of the inlet nozzle.
- the wall regions are preferably used to direct the sucked-in dirt against these wall regions, so that the suction flow loses speed as a result of the impact and, in particular, is decelerated.
- the inventors have recognized that the deceleration of the suction flow or the sucked-in dirt is an essential factor for an improved filling and an optimized utilization of the volume of the dirt container.
- the suction flow or the sucked-in dirt is advantageously directed to a transitional area between the rear wall of the end section of the inlet stub and the wall sections, so that the suction flow or the sucked-in dirt can be braked particularly effectively.
- the design of the end section of the inlet nozzle leads to a deflection of the suction flow.
- the rear wall of the end portion of the inlet nozzle is preferably arranged substantially perpendicular to the substantially planar surface of the end portion.
- the rear wall is arranged substantially perpendicular to the wall regions of the outflow openings, which preferably form a bottom or a bottom side of the end section.
- the outflow openings define an outflow plane which runs essentially parallel to the rear wall of the end section of the inlet connection and which is substantially perpendicular to the wall regions of the outlet. flow openings is formed.
- the proposed end piece for an inlet nozzle can also be used in conjunction with a filter bag.
- the Y-shaped inlet stub or its end piece has an enlarged connection geometry compared to a conventional stub.
- the sealing geometry may be formed, for example, in an elliptical shape, for example in an oval shape.
- the end section of the inlet nozzle has only one outflow opening which then, however, preferably has an outflow opening size that is significantly larger than the inlet opening area.
- a deflection of the inflow direction of the suction flow is made possible with the preferably y-shaped end section of the inlet stub.
- the end section of the inlet nozzle is formed by its shape to deflect a direction of the suction flow.
- the suction flow has a direction which preferably runs essentially parallel to the container bottom.
- the inflow opening of the end section is arranged above a maximum fill level of the dirt container.
- the end piece is arranged above the dirt or water surface. This is preferred because layer-by-layer deposition of the dirt in the dirt container is possible in particular when the nozzle is not immersed in the dirt. Dipping the dirt disadvantageously leads to undesirable turbulence in the dirt and should be avoided.
- a wet and dry vacuum cleaner which has an inlet connection, which is designed as a horizontally flowing diffuser and has a Y-shape in the sense that the inlet connection forms an inlet. comprises flow opening for the suction flow and two outflow openings.
- the wet and dry vacuum cleaner has a dirt container, wherein sucked-in dirt particles can reach the dirt container via the inlet connection.
- the inlet connection piece preferably has an end section in the region of a diffuser opening, wherein one end section of the inlet connection piece has an inflow opening for the suction flow and an outflow region, wherein the outflow region comprises two outflow openings.
- FIG. 1 A preferred embodiment of a wet and dry vacuum cleaner 100 according to the invention is shown in FIG.
- the wet and dry vacuum cleaner 100 has a suction head 10, a dirt container 20 and an inlet fitting 25 designed to connect a suction hose 200.
- FIG. 1 the suction hose 200 to be connected to the inlet fitting 25 is shown schematically.
- the wet and dry vacuum cleaner 100 furthermore has an inlet connection 27, which is flow-connected to the inlet fitting 25 in such a way that sucked-in dirt particles P can reach the dirt container 20 via the inlet connection 27.
- the inlet pipe 27 is designed as a horizontal outflowing diffuser.
- the inlet nozzle 27 designed as a diffuser is arranged exclusively in a volume V defined by the dirt container 20.
- the diffuser formed as an inlet nozzle 27 is arranged such that a suction flow S is directed directly against an inner wall 21 of the dirt container 20.
- the suction flow S flows through the diffuser opening 28 of the inlet nozzle 27 in the horizontal direction H against the inner wall 21, bounces there and slows down in the lower portion of the dirt container 20, whereby the dirt particles P layer by layer without turbulence or be registered at least with significantly reduced turbulence.
- the diffuser opening 28 of the inlet nozzle 27 has a wall distance WA of the inner wall 21, the wall distance WA being less than one fifth of the container width B of the dirt container 20.
- a cross-sectional area Q1 of the diffuser opening 28 in the present exemplary embodiment is at least 50% greater than a cross-sectional area Q2 of the inlet fitting 25 in the region of the wall passage into the dirt container 20.
- the wet and dry vacuum cleaner 100 of FIG. 1 further has an electric turbine arranged in the suction head 10. By means of this electric turbine, the suction flow S is generated, via which the dirt particles P are sucked into the dirt container 20 in the course of a wet application or a dry application.
- the wet and dry vacuum cleaner 100 further has a dirt filter 17 which, based on the suction flow S, is connected downstream of the inlet pipe 27 designed as a diffuser. in the In the present embodiment illustrated, the dirt filter 17 is arranged in the transition between the suction head 10 and the dirt container 20.
- the cleaner head 10 is located on top of the dirt container 20 and is locked to this (locking not shown).
- the inlet nozzle formed as a diffuser 27 is integrally formed and formed directly on the dirt container 20. In this case, both the inlet nozzle 27 and the dirt container 20 made of plastic.
- the dirt container 20 can be made of metal, for example, in which, for example, an inlet fitting made of plastic, elastomer or polymer is fitted together with an inlet fitting 25 made of plastic or polymer.
- FIG. 2 shows a preferred embodiment of the y-shaped end portion 29 of the inlet nozzle 27 of the wet and dry vacuum 100.
- the upper side of the end portion 29 is defined by a substantially plane, i. plan, surface formed.
- the suction flow S is advantageously deflected as it passes through the end section 29 in such a way that the fluid-particle mixture surrounds the end section 29 preferably leaves in a direction that is not equal to the inflow direction.
- a deflection of the flow direction through the end portion 29 in a range of for example 90 degrees in the direction of the end face of the dirt container 20th
- the inflow opening 30 is designed to be inclined with respect to the substantially planar upper side of the end section 29.
- An imaginary, virtual central axis may be laid through the inflow opening 30, which encloses an inclination angle with a surface normal of the substantially planar surface of the end section 29. This angle of inclination preferably indicates how much the inlet opening 30 is tilted relative to the top side of the end section 29.
- the inflow opening 30 has an elliptical, in particular circular, base area whose diameter can be, for example, between 3 and 8 cm, preferably between 4 and 7 cm and very particularly preferably between 5 and 6 cm.
- the end section 29 has, above, an outflow region 31, which is formed by two outflow openings 32. It can be provided in the context of the invention, an outflow opening 32 or more than two discharge openings 32, wherein each of the surface of the Outflow openings 32 relative to the size of the inlet opening 30 should be increased.
- the outflow openings 32 preferably span an outflow plane that is essentially orthogonal to the substantially planar surface of the end section 29. Preferably, the outflow plane is substantially parallel to a rear wall of the end portion 29 and substantially perpendicular to wall portions 33 of the end portion 29, which preferably form a bottom or bottom end of the end portion 29.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nozzles For Electric Vacuum Cleaners (AREA)
- Electric Vacuum Cleaner (AREA)
- Filters For Electric Vacuum Cleaners (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP18163236.5A EP3542693A1 (de) | 2018-03-22 | 2018-03-22 | Nass- und trockensauger |
| PCT/EP2019/057017 WO2019180108A1 (de) | 2018-03-22 | 2019-03-21 | Nass- und trockensauger |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP3768137A1 true EP3768137A1 (de) | 2021-01-27 |
| EP3768137B1 EP3768137B1 (de) | 2025-05-21 |
| EP3768137C0 EP3768137C0 (de) | 2025-05-21 |
Family
ID=61749991
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18163236.5A Withdrawn EP3542693A1 (de) | 2018-03-22 | 2018-03-22 | Nass- und trockensauger |
| EP19711608.0A Active EP3768138B1 (de) | 2018-03-22 | 2019-03-21 | Nass- und trockensauger |
| EP19711607.2A Active EP3768137B1 (de) | 2018-03-22 | 2019-03-21 | Nass- und trockensauger |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18163236.5A Withdrawn EP3542693A1 (de) | 2018-03-22 | 2018-03-22 | Nass- und trockensauger |
| EP19711608.0A Active EP3768138B1 (de) | 2018-03-22 | 2019-03-21 | Nass- und trockensauger |
Country Status (5)
| Country | Link |
|---|---|
| US (3) | US20210106193A1 (de) |
| EP (3) | EP3542693A1 (de) |
| JP (2) | JP7064815B2 (de) |
| CN (2) | CN111818833B (de) |
| WO (2) | WO2019180109A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3542693A1 (de) * | 2018-03-22 | 2019-09-25 | Hilti Aktiengesellschaft | Nass- und trockensauger |
| CN112075877A (zh) * | 2020-09-30 | 2020-12-15 | 深圳市启为机器人技术有限公司 | 一种污水箱结构及吸尘器 |
| WO2024184416A1 (de) * | 2023-03-09 | 2024-09-12 | Robert Thomas Metall- Und Elektrowerke Gmbh & Co. Kg | Sauger und reinigungsverfahren |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3165774A (en) * | 1963-08-26 | 1965-01-19 | Us Divers Co Inc | Portable vacuum apparatus for rapid collection and disposal of debrisladen liquid |
| US3921250A (en) * | 1974-05-29 | 1975-11-25 | Jerabek & Associates Ltd | Suction cleaner air inlet device |
| US4755194A (en) * | 1985-03-11 | 1988-07-05 | National Tank Company | Method for introducing a mixture of gas and liquid into a separator vessel |
| US4809396A (en) * | 1987-06-29 | 1989-03-07 | Houser Franklin C | Combination vacuum and solution-dispensing apparatus |
| US4755794A (en) * | 1987-07-23 | 1988-07-05 | American Telephone And Telegraph Company, At&T Bell Laboratories | Digital-to-digital code converter |
| US5918344A (en) * | 1996-07-12 | 1999-07-06 | Shop Vac Corporation | Self-evacuating vacuum cleaner |
| US6249933B1 (en) * | 1999-08-26 | 2001-06-26 | Shop Vac Corporation | Pump having sealless shaft |
| KR100456174B1 (ko) * | 2002-09-24 | 2004-11-09 | 삼성광주전자 주식회사 | 습건식 진공청소기 |
| TW583955U (en) * | 2003-06-12 | 2004-04-11 | Shang-Je Tsai | Improved airflow guidance structure of vacuum cleaner |
| EP1535560B1 (de) * | 2003-10-28 | 2013-03-13 | LG Electronics, Inc. | Staubsammelvorrichtung und damit ausgerüsteter Nass- und Trockenreinigungssauger |
| US20060010639A1 (en) * | 2004-07-14 | 2006-01-19 | Yuen Se K | Electro-optical vacuum cleaner |
| DE502005010795D1 (de) * | 2005-01-27 | 2011-02-17 | Kaercher Gmbh & Co Kg Alfred | Sauggerät |
| US8282697B2 (en) * | 2009-02-16 | 2012-10-09 | Samsung Electronics Co., Ltd. | Dust collecting apparatus for vacuum cleaner |
| CN103245143B (zh) * | 2012-02-14 | 2016-09-21 | 浙江三花股份有限公司 | 气液分离器 |
| CN103720433B (zh) * | 2012-10-12 | 2017-02-01 | 科沃斯机器人股份有限公司 | 水过滤集尘装置及其水过滤吸尘器 |
| JP5374631B1 (ja) * | 2012-11-07 | 2013-12-25 | 有限会社 川本技術研究所 | 湿式吸引アタッチメント |
| CA2928647A1 (en) * | 2013-10-28 | 2015-05-07 | Hayward Industries, Inc. | Velocity reducing pool filter port |
| GB2538642A (en) * | 2013-11-01 | 2016-11-23 | Techtronic Floor Care Tech Ltd | Surface cleaning apparatus |
| CN103549920A (zh) * | 2013-11-06 | 2014-02-05 | 张周新 | 一种清洁机器人用的刷盘 |
| CN105708392A (zh) * | 2016-03-25 | 2016-06-29 | 美的集团股份有限公司 | 过滤组件和具有其的吸尘器 |
| EP3542693A1 (de) * | 2018-03-22 | 2019-09-25 | Hilti Aktiengesellschaft | Nass- und trockensauger |
-
2018
- 2018-03-22 EP EP18163236.5A patent/EP3542693A1/de not_active Withdrawn
-
2019
- 2019-03-21 WO PCT/EP2019/057018 patent/WO2019180109A1/de not_active Ceased
- 2019-03-21 WO PCT/EP2019/057017 patent/WO2019180108A1/de not_active Ceased
- 2019-03-21 US US16/970,386 patent/US20210106193A1/en not_active Abandoned
- 2019-03-21 JP JP2020549784A patent/JP7064815B2/ja active Active
- 2019-03-21 CN CN201980017783.5A patent/CN111818833B/zh active Active
- 2019-03-21 JP JP2020549736A patent/JP2021517041A/ja active Pending
- 2019-03-21 EP EP19711608.0A patent/EP3768138B1/de active Active
- 2019-03-21 US US16/970,393 patent/US20210113042A1/en not_active Abandoned
- 2019-03-21 EP EP19711607.2A patent/EP3768137B1/de active Active
- 2019-03-21 CN CN201980017755.3A patent/CN111818832A/zh active Pending
-
2024
- 2024-07-31 US US18/790,073 patent/US20240389806A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP3768138C0 (de) | 2024-07-31 |
| US20240389806A1 (en) | 2024-11-28 |
| EP3768138B1 (de) | 2024-07-31 |
| EP3542693A1 (de) | 2019-09-25 |
| EP3768137B1 (de) | 2025-05-21 |
| US20210113042A1 (en) | 2021-04-22 |
| EP3768137C0 (de) | 2025-05-21 |
| JP2021517042A (ja) | 2021-07-15 |
| JP7064815B2 (ja) | 2022-05-11 |
| JP2021517041A (ja) | 2021-07-15 |
| CN111818833A (zh) | 2020-10-23 |
| WO2019180109A1 (de) | 2019-09-26 |
| CN111818833B (zh) | 2022-07-29 |
| US20210106193A1 (en) | 2021-04-15 |
| CN111818832A (zh) | 2020-10-23 |
| EP3768138A1 (de) | 2021-01-27 |
| WO2019180108A1 (de) | 2019-09-26 |
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