EP2192852B1 - Geschirrspüler - Google Patents

Geschirrspüler Download PDF

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Publication number
EP2192852B1
EP2192852B1 EP08785206A EP08785206A EP2192852B1 EP 2192852 B1 EP2192852 B1 EP 2192852B1 EP 08785206 A EP08785206 A EP 08785206A EP 08785206 A EP08785206 A EP 08785206A EP 2192852 B1 EP2192852 B1 EP 2192852B1
Authority
EP
European Patent Office
Prior art keywords
dishwasher
nozzle
recited
flow obstacle
spray
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.)
Active
Application number
EP08785206A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2192852A1 (de
Inventor
Seyfettin Kara
Martin Kornberger
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.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
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 Miele und Cie KG filed Critical Miele und Cie KG
Priority to PL08785206T priority Critical patent/PL2192852T3/pl
Publication of EP2192852A1 publication Critical patent/EP2192852A1/de
Application granted granted Critical
Publication of EP2192852B1 publication Critical patent/EP2192852B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • A47L15/42—Details
    • A47L15/4278—Nozzles
    • A47L15/4282—Arrangements to change or modify spray pattern or direction
    • 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
    • A47L15/42—Details
    • A47L15/4289—Spray-pressure measuring or regulating arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/20—Arrangements of several outlets along elongated bodies, e.g. perforated pipes or troughs, e.g. spray booms; Outlet elements therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/28—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with integral means for shielding the discharged liquid or other fluent material, e.g. to limit area of spray; with integral means for catching drips or collecting surplus liquid or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3415—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with swirl imparting inserts upstream of the swirl chamber

Definitions

  • the present invention relates to a dishwasher according to the preamble of claim 1.
  • a dishwashing machine with pulsating nozzles wherein an arm has a plurality of nozzles which are supplied with each other via different channels.
  • a channel is in connection with so-called auxiliary nozzles, wherein the supply of rinsing liquid to these auxiliary nozzles can be shut off via a valve. This ensures that the rinsing liquid exits pulsating and partially the spraying of rinsing liquid is avoided from the auxiliary nozzles.
  • a dishwashing machine with a spray arm is known in which individual spray nozzles can be activated or deactivated without the use of additional actuators. Depending on the change in the pump pressure, a pulsation of the spraying of the dishes can be achieved in order to allow effective cleaning.
  • elastic means are provided which can open and close the individual nozzles.
  • the spray jet in the prior art nozzles always exits according to the nozzle opening. It is not intended that the spray jets be changed in geometry and therefore may not enter well in problem areas such as pots, sink corners or other hard to reach areas. Because despite the possibility of a pulsating operation, the geometry of the exiting spray jet remains predetermined.
  • At least one spray arm is used, in which a rotating element generates pulsating sprays inside.
  • a spray arm with spray nozzles is known whose spray jet characteristic can be changed via diaphragm-shaped actuating elements. For this purpose, a manual intervention of the user is required.
  • the present invention poses the problem of providing a dishwasher in which the flushing liquid emerging in the spray jet can be at least partially adapted from simply constructed spray arms.
  • a flow obstacle for changing the geometry of the spray jet is provided within the spray arm in front of at least one nozzle. It has been found that by a flow obstruction adjacent to the nozzle but within the spray arm, the geometry of the exiting spray jet can be changed so that it not only straight out of the spray arm, but also has other geometries, which increases the effectiveness of the cleaning performance. Because, in particular, by changing the geometry of the spray can also poorly accessible areas, as well as in pots or corners reach.
  • the spray arm is designed as a hollow body and a flow obstacle is held on the opposite to the nozzle inner wall of the hollow body.
  • defined flow channels are formed within the spray arm, so that the exiting fluid generates a spray jet in accordance with the design of the flow obstacle and the nozzle.
  • the flow obstacle may protrude to just before the exit surface of the spray jet at the nozzle, for example in a range of less than 4 mm.
  • the flow obstacle is movable relative to the adjacent nozzle.
  • a plurality of nozzles are provided distributed over the spray arm, each associated with a flow obstacle.
  • a suitable flow obstruction of the nozzle can be assigned depending on the seat of the nozzle.
  • flow obstacles are advantageous, which produce a somewhat wider spray jet, while radially inner nozzles on the spray arm can produce a narrower, more powerful jet.
  • the flow obstacle may preferably be formed as a pin with a rounded surface, so that there is a conical spray. It is also possible to form the flow obstruction as a V-shaped ramp, as a helix, or as a pin to produce a particular spray.
  • a spray arm 1 is arranged in a washing compartment of a dishwasher, not shown in more detail. It is designed as a hollow body 2 and provided centrally at a central opening with a connection 3 for connection to a pipe system of the dishwasher. Thus, rinsing fluid can be pumped into the spray arm 1 via a pump, also not shown.
  • the connection 3 is arranged on a central axis of rotation A of the spray arm 1.
  • nozzles 5 On the hollow body 2 a plurality of nozzles 5 are formed in a first wall 4, can be sprayed via the rinsing liquid not shown in detail ware. Furthermore, one or more drive nozzles 6 can be provided, which ensure a rotation of the spray arm 1 during the rinsing operation.
  • the nozzles 5 may be directed upward as shown in the figures. Alternatively, downward orientation is also conceivable in order to clean dishes under the spray arm.
  • flow obstacles 8 are arranged in the hollow body 2, which extend from the opposite wall 7 of the hollow body 2 in the direction of the nozzles 5.
  • Each flow obstacle 8 is associated with a nozzle 5.
  • FIG. 2A a nozzle 5 of a spray arm is shown, as used in the prior art.
  • the nozzle 5 is directed upwards and has an exit surface 9, through which the rinsing liquid emerges in a punctiform jet 10. Due to the volume flow, the jet 10 can be varied in intensity in flushing liquid, but not in the geometry. The ray shape thus remains the same.
  • the spray arm 1 according to the invention is shown with the flow obstacle 8, which is designed as a pin and has a rounded surface, preferably as a hemisphere, which is arranged adjacent to the nozzle 5.
  • the flow obstacle 8 is arranged directly adjacent to the nozzle 5 in front of the circular exit surface 9, so that the flow of the rinsing liquid is influenced on the way into the nozzle 5.
  • the shape of a jet 11 is changed out of the nozzle 5, so that due to the peg-shaped flow obstacle 8, the jet emerges from the outlet surface 9 in a cone shape.
  • This jet shape can cover a larger area, which is supplied with rinsing liquid.
  • a modified flow obstruction 18 is arranged in the spray arm 1, which is designed as a thin pin which projects through the nozzle 5.
  • a tip 19 is arranged outside the exit surface 9 of the nozzle 5.
  • a spray jet 20 is formed, which is designed as a hollow cone. Due to the cone-shaped spreading of the jet, on the one hand a relatively large spray area is covered and on the other hand the volume flow in the area of the outer surface of the hollow cone jet 20 is greater than in the case of a full cone jet 11.
  • a ramp which extends in a wall shape and adjacent to the nozzle 5 is V-shaped, so that directed to the nozzle 5 slopes 29 form.
  • the spray jet 30 emerging from the exit surface 9 is formed as a flat jet, widening wedge-shaped.
  • FIG. 2E another embodiment of a flow obstacle 38 is shown, which is provided as a helix with a helical channel 39. This helix ends shortly before the exit surface 9 of the nozzle 5, so that the outgoing jet 40 is formed as a vortex jet.
  • the flow obstacle 8, 18, 28 and 38 forms a kind of throttle for the nozzle 5, so that due to the predetermined flow conditions adjacent to the nozzle 5, a certain geometry of spray jet 11, 20, 30 or 40 is generated, which may also depend on Volume flow is.
  • a certain geometry of spray jet 11, 20, 30 or 40 is generated, which may also depend on Volume flow is.
  • a spray arm 1 which, in turn, is designed as a hollow body 2 with a central connection 3, the connection 3 running along a central axis of rotation A is arranged.
  • the hollow body 2 has in its upper wall 4 nozzles 5 and also one or more drive nozzles 6.
  • nozzles 5 extends within the hollow body 2, starting from the opposite wall 7 each have a flow obstacle 8 'in the direction of a nozzle which is adjustable on the bottom 7 of the Low spray 2 is held.
  • the flow obstacle 8 ' is designed as a pin with a rounded surface, wherein on the pin 8' an external thread 9 'is formed, which is in engagement with a thread (not shown) on the wall 7.
  • the flow obstacle can be moved closer to the nozzle 5 or away from the nozzle 5 by turning the pin 8 '.
  • FIG. 4A the pin 8 'is moved away from the nozzle 5 via a tool, not shown, which is in engagement with a slot 10', so that the influencing of the flow path of the rinsing liquid is reduced and insofar the geometry of the jet emerging from the nozzle 5 is changed ,
  • the hemispherical surface is arranged immediately adjacent to the nozzle 5, so that the flow path of the rinsing liquid to the nozzle 5 is relatively strongly influenced, so that the outgoing jet has a fanned-out geometry than in the case of FIG shown position.
  • the user can adjust the geometry of the spray jet by manually screwing or unscrewing the pins 8 'on the spray arm 1'.
  • FIG. 3 Flow obstacles are shown in the form of pin 8 ', wherein it is of course also possible in the FIGS. 2C to E shown flow obstacles 18, 28 or 38 as needed to provide the individual nozzles 5.
  • FIG. 5 a further embodiment of a spray arm 1 according to the invention is shown, which is designed as a hollow body 2 and has a connection 3 around a central axis of rotation 4.
  • the hollow body 2 has distributed over the length of a plurality of nozzles 5, wherein drive nozzles 6 are provided as a rotary drive.
  • Adjacent to the nozzles 5 are provided as flow obstacles pins 8 "with a rounded surface, but these are not fixedly arranged on the nozzle 5 opposite wall 7 of the hollow body 2, but via a spring element 9" movable. Thereby, the distance of the flow obstacle 8 "to the nozzle 5 is dependent on the pressure within the spray arm 1, so that at increased pump speed, the flow obstacles 8" further pushed away from the nozzle 5 than at low pump speed. As a result, the spray jet is varied from the nozzles 5 depending on the pressure within the spray arm 1.
  • FIG. 6A is the storage of in FIG. 5
  • the pin 8 is mounted on a helical spring 9", preferably made of steel, the spring 9 "being supported on a receptacle 10" on the wall 7 of the spray arm 1 ".
  • FIG. 6B it is also possible to provide on the wall 7 of the spray arm 1, a membrane 9 "', on which then a flow obstacle 8'" is movably mounted in the form of a pin.
  • the flow obstacles 8 are either fixedly mounted on the bottom 7, adjustable on the bottom 7 or resiliently on the bottom 7. It is of course also possible to provide different flow obstacles 8 on a spray arm, which are partially fixed, partially adjustable and partially spring-mounted.
  • the geometry of the flow obstacles may differ within a spray arm, so that different geometries of spray jets at the individual nozzles 5 can be generated. In this case, instead of a circular exit surface on the nozzle 5, a slot hole or another geometry may be provided.

Landscapes

  • Washing And Drying Of Tableware (AREA)
EP08785206A 2007-08-14 2008-07-30 Geschirrspüler Active EP2192852B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08785206T PL2192852T3 (pl) 2007-08-14 2008-07-30 Zmywarka do naczyń

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007038469 2007-08-14
PCT/EP2008/006260 WO2009021626A1 (de) 2007-08-14 2008-07-30 Geschirrspüler

Publications (2)

Publication Number Publication Date
EP2192852A1 EP2192852A1 (de) 2010-06-09
EP2192852B1 true EP2192852B1 (de) 2011-09-14

Family

ID=40120095

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08785206A Active EP2192852B1 (de) 2007-08-14 2008-07-30 Geschirrspüler

Country Status (6)

Country Link
US (1) US20110203619A1 (es)
EP (1) EP2192852B1 (es)
AT (1) ATE524099T1 (es)
ES (1) ES2369727T3 (es)
PL (1) PL2192852T3 (es)
WO (1) WO2009021626A1 (es)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011088494A1 (de) 2011-12-14 2013-06-20 BSH Bosch und Siemens Hausgeräte GmbH Sprüharm einer Geschirrspülmaschine
US11026555B2 (en) 2015-12-21 2021-06-08 Electrolux Appliances Aktiebolag Dishwasher comprising a wash arm arrangement
US11464391B2 (en) 2017-10-31 2022-10-11 Electrolux Appliances Aktiebolag Spray arm assembly

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EP2348152B1 (de) 2010-01-20 2015-08-19 Miele & Cie. KG Waschmaschine mit Umfluteinrichtung
US8939162B2 (en) * 2010-03-30 2015-01-27 Bsh Home Appliances Corporation Variable spray-pattern in water-using cleaning appliances
EP2389851B1 (en) * 2010-05-25 2013-10-16 Electrolux Home Products Corporation N.V. Wash arm arrangement for a dishwasher
US9386903B2 (en) 2011-09-22 2016-07-12 Whirlpool Corporation Dishwasher with spray system
US9693672B2 (en) 2011-09-22 2017-07-04 Whirlpool Corporation Dishwasher with sprayer
US9414736B2 (en) 2011-09-22 2016-08-16 Whirlpool Corporation Dishwasher with directional spray
US9492055B2 (en) 2011-09-22 2016-11-15 Whirlpool Corporation Dishwasher with spray system
DE102012107260B4 (de) * 2012-08-08 2015-12-03 Miele & Cie. Kg Geschirrspülautomat
US9295368B2 (en) 2013-03-01 2016-03-29 Whirlpool Corporation Dishwasher with hydraulically driven sprayer
US9532701B2 (en) 2013-03-01 2017-01-03 Whirlpool Corporation Dishwasher with sprayer
DE102013105979A1 (de) * 2013-06-10 2014-12-11 Karl Volkhart König Spüleinrichtung und Verfahren zur Aufbringung mehrerer Fluid-Volumenströme
NL1040268C2 (en) * 2013-06-21 2014-12-24 Corrosioncontrol Nu B V Retractable injection lance for finely dispersing liquids in gas streams.
US9713413B2 (en) 2013-07-01 2017-07-25 Whirlpool Corporation Dishwasher for treating dishes
US10039433B2 (en) 2013-07-03 2018-08-07 Electrolux Appliances Aktiebolag Dishwasher spray arm
US9532699B2 (en) 2013-07-15 2017-01-03 Whirlpool Corporation Dishwasher with sprayer
US10362924B2 (en) 2013-11-12 2019-07-30 Samsung Electronics Co., Ltd. Jet unit, jet nozzle and manufacturing method thereof, and dish washing machine having the same
KR102091523B1 (ko) 2013-11-12 2020-03-19 삼성전자주식회사 분사유닛, 분사노즐과 그 제조방법 및 이를 갖는 식기세척기
DE102014100002A1 (de) * 2014-01-02 2015-07-02 Miele & Cie. Kg Geschirrspülautomat
CN105934187B (zh) 2014-03-24 2019-10-15 伊莱克斯电器股份公司 包括至少一个洗碗机喷射臂的洗碗机
KR101606804B1 (ko) 2014-07-14 2016-03-28 엘지전자 주식회사 식기세척기
US11260517B2 (en) 2015-06-05 2022-03-01 Ingersoll-Rand Industrial U.S., Inc. Power tool housings
US10750924B2 (en) * 2016-03-24 2020-08-25 Whirlpool Corporation Dishwasher with tube wash system
CN105816132B (zh) * 2016-05-21 2019-08-16 广东顺德拉鲁设计有限公司 婴儿器皿洗涤机的喷臂装置
PL3481269T3 (pl) 2016-07-08 2021-09-13 Electrolux Appliances Aktiebolag Zespół ramienia myjącego
US10563384B2 (en) * 2017-05-12 2020-02-18 Norman Faiola Quick clean faucet
CN109394133A (zh) * 2017-08-18 2019-03-01 美的集团股份有限公司 洗碗机及其喷臂
WO2019086107A1 (en) 2017-10-31 2019-05-09 Electrolux Appliances Aktiebolag Wash arm assembly
CN108636625B (zh) * 2018-03-13 2021-09-14 因诺弥斯特有限责任公司 多模式流体喷嘴
US11006813B2 (en) 2018-03-21 2021-05-18 Whirlpool Corporation Dishwasher
CN110664347B (zh) * 2018-07-02 2023-04-18 青岛海尔洗碗机有限公司 一种洗碗机的喷淋装置
CN111345761A (zh) 2018-12-20 2020-06-30 惠而浦公司 洗碗机
US11160433B2 (en) 2020-01-22 2021-11-02 Haier Us Appliance Solutions, Inc. Dishwashing appliance having a multi-zone spray assembly to alternate the spray of wash fluid
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011088494A1 (de) 2011-12-14 2013-06-20 BSH Bosch und Siemens Hausgeräte GmbH Sprüharm einer Geschirrspülmaschine
US11026555B2 (en) 2015-12-21 2021-06-08 Electrolux Appliances Aktiebolag Dishwasher comprising a wash arm arrangement
US11464391B2 (en) 2017-10-31 2022-10-11 Electrolux Appliances Aktiebolag Spray arm assembly

Also Published As

Publication number Publication date
ES2369727T3 (es) 2011-12-05
EP2192852A1 (de) 2010-06-09
PL2192852T3 (pl) 2011-12-30
US20110203619A1 (en) 2011-08-25
ATE524099T1 (de) 2011-09-15
WO2009021626A1 (de) 2009-02-19

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