EP1986539A1 - Dishwasher with spray apparatus - Google Patents
Dishwasher with spray apparatusInfo
- Publication number
- EP1986539A1 EP1986539A1 EP07703786A EP07703786A EP1986539A1 EP 1986539 A1 EP1986539 A1 EP 1986539A1 EP 07703786 A EP07703786 A EP 07703786A EP 07703786 A EP07703786 A EP 07703786A EP 1986539 A1 EP1986539 A1 EP 1986539A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- edge
- molded part
- connecting seam
- dishwasher according
- dishwasher
- 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
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
- A47L15/18—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with movably-mounted spraying devices
- A47L15/22—Rotary spraying devices
- A47L15/23—Rotary spraying devices moved by means of the sprays
Definitions
- the invention relates to a dishwasher, in particular household dishwasher, with a washing container for receiving items to be washed and a spraying device having a first molded part, which has a first edge, and a second molded part, which has a second edge corresponding to the first edge, wherein the first and the second molding to form a fluid-tight cavity at a joining edge along their edges are connected by a connecting seam.
- the invention also relates to a manufacturing method for a spray device of a dishwasher comprising the steps of providing a first molded part having a first edge, providing a second molded part having a second edge and connecting the first molded part to the second molded part to form a fluid-tight cavity at a joining edge with a Verbindunsnaht along the edges.
- Such a spraying device is known from DE 198 32 982 C2.
- the spray device consists of two mold elements, which are each attached to a hub.
- the mold elements are made of sheet metal or plastic.
- an upper element is crimped around a lower element.
- the spray arm formed as a hollow body, which is rotatably mounted in the washing compartment of a dishwasher, is known from DE 202 20 465 U1.
- the spray arm comprises an upper part and a lower part.
- the two parts are made of a thin metal sheet and connected together by crimping.
- a spray device for a dishwasher which has an upper part made of a plastic and a lower part of a sheet metal shell, is known from DE-GM 78 31 102 U1. As is apparent from Fig. 1 shown there, the connection of the upper and lower part is made by a flange.
- Binding bond technology requires that at least one of the mold parts be made of a metal.
- the production of a generic spray device is due to the large number of different manufacturing steps and different trained manufacturing machines consuming and costly.
- DE 696 20 709 T2 discloses that the profile of a spray device for a dishwasher can be achieved by pulling the top of a spray element when it is made of a metallic material.
- the spray element is made of a plastic material, the shape can be achieved by a compression molding process.
- Mass then brought by a shaping tool in a corresponding shape. Since the spraying device is hollow, is used as the starting body for
- Production of the spray arms uses a hose produced according to the described extrusion process, which is heated to a certain temperature and pressed in this deformable state by a blowing process in a cooled profile tool.
- the blank thus produced has the shape of a finished
- Nozzle-like outbreaks are produced in a second production step.
- a method and devices for producing nozzle-like outbreaks in spray arms for dishwashers are known from DE 102 38 557 A1.
- spraying devices are known in which a spray arm consists of a first and second molded part, which are integrally connected to one another by means of mirror welding due to the formation of a connecting seam.
- the molded parts are produced by a spraying process in a tool made of thermoplastic material before the mirror welding. Disadvantage of such spraying devices are the high cost of manufacturing and the risk that can build up after completion of the manufacturing process tensions, which lead to a distortion of the spray arm.
- the object of the present invention is therefore to provide a generic spray device for a dishwasher, a dishwasher with a specify such spray device and a manufacturing method for this spray device, which allows a more cost-effective production.
- the dishwasher according to the invention in particular household dishwasher, with a washing container for receiving items to be washed and a spraying device with a first molded part having a first edge, and a second molded part having a second edge corresponding to the first edge, wherein the first and the second Form part for forming a fluid-tight cavity at a joining edge along their edges are connected to each other, wherein the connecting seam consists of an additional material.
- the connecting seam does not come from the material of the first and / or second molded part.
- the connecting seam at the joining edge of the first and the second molded part for connecting the first and second molded part is formed with at least one seam between the connecting seam and the first and second molded part.
- the seams have the shape of the surface of the first and second molded part in this area.
- the seam is applied by spraying with tools on the two existing moldings.
- two seam regions (in cross-section) are formed at least in partial regions between the connecting seam and the first and second molded part.
- the seams or seam areas are formed between the connecting seam and the first molded part and between the connecting seam and the second molded part.
- the two seams or seam areas in cross-section at a joint seam arise because the connecting seam is applied to the already existing first and second molded part by a spraying process. If the connecting seam is produced for example by mirror welding as in the prior art, the plastic of the first and second molded part is heated at the joining edge and then this heated plastic is connected to one another. It thus forms when mirror welding no or - A -
- Joining edge is understood to be any region of the edge of the first and second molded part which serves to connect the first and second molded part.
- the connecting seam is made of a plastic that can be processed by a spraying method.
- the connecting seam is applied to the joining edge by means of a spraying method.
- the seam in an injection molding machine without additional process steps, such as. Mirror welding or trimming, are made when the first and second moldings are made of a plastic.
- the spraying device can be manufactured without cutting and without waste fully automatically, optionally in a single process step: the latter is possible if the first and the second molded part are made of a preferably thermoplastic material, in particular injected.
- the first and / or the second molded part may be made of a preferably thermoplastic plastic or metal.
- plastic as a material has the advantage that the first and the second molded part can be produced by means of a spraying process, so that, for example, the inner contour of the molded parts is freely drivable. This can be advantageous for the design of the hydraulic conditions in the spray device. Furthermore, the integration of additional components, such as e.g. facilitated a Venturi tube, since the integration during the injection process can be accomplished and a subsequent manual assembly is eliminated.
- first edge of the first molding and the second edge of the second molding each have a first edge portion extending away from the cavity and a second edge portion extending substantially perpendicularly away from the first edge portion. It is further provided that, when the first and second edges adjoin one another, the shape and arrangement of the first edge section and of the second edge section of the first and the second molded part is at least partially symmetrical. This geometric Design of the first and second edges of the first and second mold parts facilitates the attachment of the connecting seam to the spraying device.
- the connecting seam has a first end portion and a second end portion, which in a first gap formed between the second edge portion and the outer shell of the first molding, and a second gap, which is between the second edge portion and the outer shell of the second molded part is formed, protrude and clasp the respective second edge portions.
- the connecting seam has a substantially U-shaped configuration, wherein the end portions of the two legs of the "U" facing each other. It is further provided that the outermost end of the first end portion adjacent to the first edge portion of the first mold part, and the outermost end of the second end portion adjacent to the first edge portion of the second mold part.
- the connecting seam produces a positive connection between the first edge section of the first molded part and the second edge section of the second molded part.
- the connecting seam is connected at least in sections cohesively to the first molded part and / or the second molded part.
- a further embodiment provides that the connecting seam is formed circumferentially at the joining edge of the first and the second molded part. As a result, a complete fluid-tight seal of the cavity is ensured against the environment.
- the connecting seam is integrally formed without interruption.
- the connecting seam with at least one opening, wherein the joining edge is not fluid-tight at the location of the at least one opening.
- the spraying device further comprises an axis about which the spraying device is rotatably mounted, the at least one interrupt being close the radially outer end of the spray device is arranged.
- the at least one interruption is configured and arranged such that it has a tangential outlet for the rinsing liquor and serves as a drive nozzle. This eliminates the need to provide a separate drive nozzle with a tangential outlet in one of the two moldings.
- the connecting seam has a different color from the one or more colors of the first and second molded part.
- spray nozzles for rinsing liquor are formed on the first and / or second molded part.
- the spray nozzles pressurize the items to be washed with rinse water.
- a feed tube for rinsing liquor in particular as Venturi tube, formed integrally with the first or second molded part on the first or second molded part.
- An inventive manufacturing method for a spray device of a dishwasher comprises the steps of: providing a first mold part having a first edge, providing a second mold part having a second edge, connecting the first mold part with the second mold part to form a fluid-tight cavity at one Joining edge along the edges, wherein the connection is made with a connection seam at the joining edge with a spraying method or injection molding.
- injection molding moldings z. B. seam, from molding compounds, for.
- a thermoplastic material in forms, for. B. tool or injection mold produced.
- the first and second molded part is thus surrounded at least in the region of the joining edges by a tool or injection molding tool, in which preferably thermoplastic material is introduced for producing the connecting seam.
- the connecting seam is made of a preferably thermoplastic material.
- the material of the joint may be the same as the material of the joint first and second molded part or another material, the z. B. differs in modulus or color.
- the first and / or second molded part is produced by a spraying method from a preferably thermoplastic material.
- a feed tube for rinsing liquor in particular as a Venturi tube, is produced on the first or second molded part during production by the injection method in the production step for the first or second molded part.
- the shape of the injection mold thus includes the feed tube and the first or second mold part, d. H. preferably thermoplastic material is introduced in one step in this injection mold.
- FIG. 1 is a perspective view of a spray device according to the invention
- FIG. 2 shows an enlarged portion of a spraying device according to the invention with a connecting seam according to a first embodiment
- FIG 3 shows an enlarged section of a spraying device according to the invention with a connecting seam according to a second embodiment.
- Fig. 1 shows a perspective view of a section through a spray device according to the invention 1.
- the spray device 1 is hereinafter referred to as
- Sprayer 1 denotes, which in a known manner in dishwashers to a
- the spray arm 1 is designed as a hollow body and comprises a first molded part 10 (also referred to as upper part) and a second molded part 20 (also referred to as lower part).
- outlet openings 3 are arranged in the first molded part 10, by means of which rinsing fluid conveyed into the cavity 4 is directed onto the items to be cleaned
- the first molded part 10 has a first circumferential edge 11.
- the second molded part 20 has a circumferential second edge 21.
- the course of the first and the second edge 11, 21 is in the illustrated illustration, in which the first mold part 10 and the second mold part 20 are arranged one above the other, corresponding to each other. In the area of the adjoining first and second edges 11, 21 results in a circumferential joining edge 2, which is to be sealed for a proper function of the spray arm.
- connection of the first molded part 10 with the second molded part 20 is effected by the provision of a connecting seam 30 at the joining edge 2 of the first and second molded part 10, 20.
- the connecting seam 30 is made of a plastic and applied to the joining edge 2 by a spraying process.
- Fig. 1 shows two different variants, which are explained in more detail below in Figures 2 and 3. In practice, the seam 30 will be realized in only one of the variants. Due to the embodiment of the connecting seam 30 by means of a spraying process, wherein the molded parts 10, 20 are present even before the production step for the connecting seam 30, seams 33 form between the connecting seam 30 and the first molded part 10 and between the connecting seam 30 and the second molded part 20 off.
- the first mold part 10 and the second mold part 20 are made of a plastic.
- the arrangement and the shape of the outlet openings 30 as well as the inner contour of the first and / or second shaped part 10, 20 can be produced in a simple manner by a spraying process in a hydraulically desired manner. If both the first and the second molded part 10, 20 and the connecting seam 30 are made of plastic, then the spray arm according to the invention can be produced fully automatically in a process step without cutting and without waste. Production can be carried out in a single injection molding machine without the need for additional process steps, such as mirror welding or metal cutting. Furthermore, additional installation costs are unnecessary.
- the formation of the first and the second mold part 10, 20 also brings with it the advantage that the integration of additional components, such as a feed tube (not shown) for rinsing liquor, eg as Venturi tube (in the narrowed region of the feed tube occurs at atmospheric pressure, so that when storing the rotating spray arm in the narrowed area no costly sealing measures are required), facilitated is because they can already be considered or molded in the context of the injection process.
- a feed tube for rinsing liquor
- Venturi tube in the narrowed region of the feed tube occurs at atmospheric pressure, so that when storing the rotating spray arm in the narrowed area no costly sealing measures are required
- the upper spray arm normally requires a feed pipe at the upper mold part and the lower spray arm normally at the lower mold part a feed pipe. This also eliminates previously necessary additional assembly steps.
- the injection technology with a tool-bound joining contour has a high accuracy.
- the edge 11 of the first molding 10 has a first first edge portion 12 extending away from the cavity 4.
- a second edge portion 13 is arranged, which extends from the first edge portion substantially perpendicular away.
- the second edge section 13 is arranged at the end of the first edge section 12 remote from the first shaped part 10.
- the second edge 21 of the second molded part 20 is formed with a first edge portion 22 and a second edge portion 23.
- first edge 1 1 and the second edge 21 are arranged corresponding to one another, the result is a symmetrical arrangement of the edge sections 12, 13 or 22, 23 of the first and second edge 11, 21.
- the connecting seam 30 according to a first embodiment, as shown in Fig. 2, has a substantially U-shaped configuration, so that the second edge portions 13, 23 are clasped by the Verbidungsnaht 30.
- a first end section 31 of the U-shaped connecting seam 30 adjoins the first edge section 12 of the first molded part 10.
- a second end section 32 of the U-shaped connecting seam 30 adjoins the first edge section 22 of the second molded part 20.
- the design of the first and the second edge 11, 12 and the configuration of the connecting seam 30 results in a positive connection between the first mold part 10 and the second mold part 20, as well as the connecting seam 30.
- the joining edge 2, as in the figure for clarity is shown exaggerated size, it is sealed fluid-tight.
- the first formed between the second edge portion 13 and an envelope surface 15 of the first molding 10 first Gap 14 may be dimensioned such that it substantially corresponds to the width of the first end portion 31 of the connecting seam 30. This applies in a corresponding manner to the second intermediate space 24, which is formed between the second edge section 23 and an enveloping surface 25 of the second molded part.
- Fig. 3 shows in another embodiment, a connecting seam 30 which is materially connected to the edges 11, 21 of the mold parts 10, 20. More precisely, a material connection in the region of the second edge sections 13 and 23 with the connecting seam
- the material bond is on outer surfaces 16 and 26 and surfaces 17 and
- the material bond to the surfaces 17 and 27 is formed by the application of the connecting seam 30 during an injection process.
- the joining edge 2 is slightly spread apart from the outer region, so that the material of the connecting seam 30 can penetrate into the joining edge 2. Also by this variant is a reliable fluid-tight seal of the cavity 4 of the
- the color of the connecting seam 30 can be chosen differently than the color of the first and second molded part 10, 20. This makes it possible to provide a design element to a spray arm in a simple manner.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL07703786T PL1986539T5 (en) | 2006-02-16 | 2007-01-11 | Dishwasher with spray apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006007327A DE102006007327A1 (en) | 2006-02-16 | 2006-02-16 | Dishwasher with spraying device |
PCT/EP2007/050241 WO2007093469A1 (en) | 2006-02-16 | 2007-01-11 | Dishwasher with spray apparatus |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1986539A1 true EP1986539A1 (en) | 2008-11-05 |
EP1986539B1 EP1986539B1 (en) | 2016-03-09 |
EP1986539B2 EP1986539B2 (en) | 2019-05-01 |
Family
ID=38218415
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07703786.9A Active EP1986539B2 (en) | 2006-02-16 | 2007-01-11 | Dishwasher with spray apparatus |
Country Status (7)
Country | Link |
---|---|
US (1) | US8221558B2 (en) |
EP (1) | EP1986539B2 (en) |
KR (1) | KR20080094018A (en) |
CN (1) | CN101384208B (en) |
DE (2) | DE202006020709U1 (en) |
PL (1) | PL1986539T5 (en) |
WO (1) | WO2007093469A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010043019A1 (en) | 2010-10-27 | 2012-05-03 | BSH Bosch und Siemens Hausgeräte GmbH | Water-bearing domestic appliance, particularly dishwasher, has hydraulic circuit, in which sprayer, particularly rotatable spray arm is provided with nozzle |
DE102010043462A1 (en) * | 2010-11-05 | 2012-05-10 | BSH Bosch und Siemens Hausgeräte GmbH | Dishwasher with at least one rotatable spray arm |
DE102018214238B3 (en) | 2018-08-23 | 2019-10-24 | BSH Hausgeräte GmbH | Decorative part for a water-conducting domestic appliance and water-conducting household appliance |
CN108899831A (en) * | 2018-09-14 | 2018-11-27 | 云南电网有限责任公司保山供电局 | A kind of open type cable protecting tube and its installation method |
CN111112818B (en) * | 2018-10-31 | 2021-10-01 | 宁波方太厨具有限公司 | Energy storage welding tool and method for drainer bracket for water tank cleaning machine |
KR102641369B1 (en) | 2018-12-12 | 2024-02-28 | 삼성전자주식회사 | Dish washer |
DE102019211410A1 (en) * | 2019-07-31 | 2021-02-04 | BSH Hausgeräte GmbH | Household dishwasher |
DE102021201342A1 (en) | 2021-02-12 | 2022-08-18 | BSH Hausgeräte GmbH | Fluid-tight component, household electrical appliance and method |
DE102021214446A1 (en) | 2021-12-15 | 2023-06-15 | BSH Hausgeräte GmbH | Decorative part for a preferably water-bearing household appliance |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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DE2501291A1 (en) | 1975-01-15 | 1976-07-22 | Roehm Gmbh | Injection moulding of hollow bodies - using three-part injection mould |
EP0121207A2 (en) | 1983-04-05 | 1984-10-10 | Bayer Ag | Hollow plastic body |
EP0158146A2 (en) | 1984-04-07 | 1985-10-16 | Intermedicat Gmbh | Injection blow-moulding apparatus |
DE60003117T2 (en) | 1999-06-14 | 2004-02-05 | Société Jean-Pierre Grosfilley | Injection mold with integrated assembly |
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US2943633A (en) * | 1957-08-27 | 1960-07-05 | Westinghouse Electric Corp | Dishwashing apparatus |
US3444870A (en) † | 1966-12-12 | 1969-05-20 | Whirlpool Co | Article washing apparatus |
US4172463A (en) † | 1978-10-13 | 1979-10-30 | White Consolidated Industries, Inc. | Dishwasher upper spray and deflector disc |
DE7831102U1 (en) | 1978-10-19 | 1979-02-08 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | DISHWASHER |
DE3405456C2 (en) * | 1984-02-16 | 1986-07-24 | Bayerische Motoren Werke AG, 8000 München | Connection of two components, in particular two plastic half-shells for the intake system of an internal combustion engine |
US4909547A (en) * | 1988-05-26 | 1990-03-20 | Chardon Rubber Company | Coupler arrangement |
US5168621A (en) * | 1988-07-12 | 1992-12-08 | Whirlpool Corporation | Method of manufacturing a domestic appliance |
US5221538A (en) † | 1990-08-06 | 1993-06-22 | Japan Steel Works, Ltd. | Rotational injection molding machine having a plurality of combinations of male and female dies |
US5267582A (en) * | 1992-01-21 | 1993-12-07 | Maytag Corporation | Wash arm construction |
US5560381A (en) † | 1995-09-29 | 1996-10-01 | White Consolidated Industries, Inc. | Stainless steel cover for plastic spray arm |
IT1280478B1 (en) | 1995-11-10 | 1998-01-20 | Merloni Elettrodomestici Spa | IMPROVED HYDRAULIC CIRCUIT DISHWASHER |
US5662744A (en) * | 1996-06-05 | 1997-09-02 | Maytag Corporation | Wash arm for dishwasher |
US5752533A (en) † | 1996-06-11 | 1998-05-19 | White Consolidated Industries, Inc. | Jet spray nozzle with third level wash arm |
JP3104859B2 (en) † | 1996-12-19 | 2000-10-30 | 日精樹脂工業株式会社 | Injection molding method and apparatus for hollow molded articles |
EP0950503B1 (en) † | 1998-03-27 | 2004-02-25 | Siegfried Hofmann GmbH | Method for making thermoplastic hollow bodies |
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US6210619B1 (en) † | 1998-10-19 | 2001-04-03 | Ford Motor Company | Method for manufacturing a two-piece plastic assembly |
DE29921565U1 (en) * | 1999-12-08 | 2001-04-12 | Aeg Hausgeraete Gmbh | Dishwasher with a spray arm |
US6605157B2 (en) * | 2000-12-22 | 2003-08-12 | General Electric Company | Method for operating a dishwasher fluid circulation assembly |
DE20220465U1 (en) | 2002-01-30 | 2003-08-21 | Miele & Cie | A method for generating a widespread water spray from a dishwasher spray arm has the outlet holes pierced prior to forming elliptical depressions |
DE10238557A1 (en) | 2002-08-22 | 2004-03-04 | BSH Bosch und Siemens Hausgeräte GmbH | Method and device for producing nozzle-like outbreaks in spray arms for dishwashers |
ITBO20030607A1 (en) * | 2003-10-17 | 2005-04-18 | Premark Feg Llc | WASHING ARM FOR A DISHWASHER MACHINE. |
US6964090B2 (en) * | 2004-01-06 | 2005-11-15 | Premark Feg L.L.C. | Arm construction for warewash machine and method of manufacturing |
-
2006
- 2006-02-16 DE DE202006020709U patent/DE202006020709U1/en not_active Expired - Lifetime
- 2006-02-16 DE DE102006007327A patent/DE102006007327A1/en not_active Withdrawn
-
2007
- 2007-01-11 WO PCT/EP2007/050241 patent/WO2007093469A1/en active Application Filing
- 2007-01-11 EP EP07703786.9A patent/EP1986539B2/en active Active
- 2007-01-11 CN CN2007800055248A patent/CN101384208B/en active Active
- 2007-01-11 US US12/223,346 patent/US8221558B2/en active Active
- 2007-01-11 KR KR1020087018755A patent/KR20080094018A/en not_active Application Discontinuation
- 2007-01-11 PL PL07703786T patent/PL1986539T5/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2501291A1 (en) | 1975-01-15 | 1976-07-22 | Roehm Gmbh | Injection moulding of hollow bodies - using three-part injection mould |
EP0121207A2 (en) | 1983-04-05 | 1984-10-10 | Bayer Ag | Hollow plastic body |
EP0158146A2 (en) | 1984-04-07 | 1985-10-16 | Intermedicat Gmbh | Injection blow-moulding apparatus |
DE60003117T2 (en) | 1999-06-14 | 2004-02-05 | Société Jean-Pierre Grosfilley | Injection mold with integrated assembly |
Also Published As
Publication number | Publication date |
---|---|
EP1986539B1 (en) | 2016-03-09 |
US8221558B2 (en) | 2012-07-17 |
CN101384208B (en) | 2011-07-20 |
US20090032066A1 (en) | 2009-02-05 |
KR20080094018A (en) | 2008-10-22 |
PL1986539T3 (en) | 2016-10-31 |
EP1986539B2 (en) | 2019-05-01 |
CN101384208A (en) | 2009-03-11 |
DE102006007327A1 (en) | 2007-08-30 |
DE202006020709U1 (en) | 2009-10-29 |
PL1986539T5 (en) | 2019-11-29 |
WO2007093469A1 (en) | 2007-08-23 |
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