EP1183987A2 - Valve pour lave-vaisselle avec dispositif de fermeture mobile - Google Patents

Valve pour lave-vaisselle avec dispositif de fermeture mobile Download PDF

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Publication number
EP1183987A2
EP1183987A2 EP01113594A EP01113594A EP1183987A2 EP 1183987 A2 EP1183987 A2 EP 1183987A2 EP 01113594 A EP01113594 A EP 01113594A EP 01113594 A EP01113594 A EP 01113594A EP 1183987 A2 EP1183987 A2 EP 1183987A2
Authority
EP
European Patent Office
Prior art keywords
outlet
cavity
valve according
valve
closing element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP01113594A
Other languages
German (de)
English (en)
Other versions
EP1183987A3 (fr
Inventor
Klaus-Martin Forst
Holger Eckert
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.)
AEG Hausgeraete GmbH
Original Assignee
AEG Hausgeraete GmbH
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 AEG Hausgeraete GmbH filed Critical AEG Hausgeraete GmbH
Publication of EP1183987A2 publication Critical patent/EP1183987A2/fr
Publication of EP1183987A3 publication Critical patent/EP1183987A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4219—Water recirculation
    • A47L15/4221—Arrangements for redirection of washing water, e.g. water diverters to selectively supply the spray arms

Definitions

  • the invention relates to a valve for a Dishwasher with one in a cavity Valve body movably arranged closing element.
  • EP 0 237 994 B1 describes a reversing valve in which a sphere is enclosed in a cavity.
  • the cavity is connected on the inlet side to a circulation pump and on the output side through a first outlet with a first Line to a lower spray arm and through a second Outlet with a second line to an upper spray arm.
  • the valve ball is in a rest position, from which you switch on the Pump is raised to the second outlet and this up seals a leakage current.
  • the valve ball is pumped by the backflow Liquid from the second line away from the second outlet along a straight line sloping upwards Guide device in the direction of the first outlet crowded.
  • valve ball With almost constant speed, see above that their dwell time in each area is approximately is constant.
  • the valve ball stays close to the first outlet as long as the liquid from the second Line flows. Will the Circulation pump switched on again, so the ball is through the Liquid flow from the circulation pump to the first outlet pressed and closes it. If the circulation pump in the valve ball is not switched on during this period along the guide means by gravity Rested rest position. This will make a valve with two Switch positions provided, in which the Fluid flow through either the first or through the second outlet can be omitted.
  • the object of the invention is a valve to suggest for a dishwasher that between at least two valve positions can be switched safely.
  • a valve for a Dishwasher in which a valve body encloses a cavity in which a movably arranged Closure element is included. Through an inflow a liquid is fed into the cavity and through a first or second outlet into a first or second Fluid line omitted. The first or second outlet can be locked by the closing element.
  • the guide device regularly has at least one Guide surface or at least two guide edges on, on which slide or roll the closing element along can.
  • the guideway can be on one side, e.g. to be limited at the top or on several sides. With all sides Boundary of the guideway is a defined course of the Closure element achieved so that e.g. despite flow eddies the closing element is not substantially away from the guide line deviates and therefore an exact starting position before the Switching takes on.
  • the closing element is regularly a body that the guide device can slide or roll along, e.g. a cylinder and particularly advantageously a ball.
  • the Closing element is advantageously heavier than that Liquid, so that the closing element on the bottom arranged limit of the guide device rests, regardless of whether the cavity of the valve with the Liquid or filled with air.
  • the kinetic energy generated by the backflowing liquid from the first line to the Closure element is transmitted in the course of Guide facility at a locally varying rate converted potential energy. So that is Speed of the closing element is very different from that current position depending on the guide device. By means of different gradients can Areas in which the Speed of the closing element is reduced and in which is why the length of stay is longer. Through the longer one The length of stay increases the time window in which the Resetting the liquid feed, e.g. through the start the circulation pump, the closing element to the outlet in this area can be pushed to the appropriate To block the outlet.
  • a third is on the valve Outlet between the first and second outlet along the Guide path of the guide device arranged.
  • the third The outlet can e.g. to the side of the guideway from the cavity branch off the valve and directly into a wash cabinet Dishwasher or with a third Be connected to the liquid line.
  • the third Liquid line can in the dishwasher sump flow, with the suction line of the circulation pump or with a Spray arm of the dishwasher.
  • the closing element is a ball on two lateral running surfaces of the guide device rolls.
  • the rolling radius changes along the guide surfaces Guideway, which is a change in the angular velocity of the Forces guide element.
  • the change in Angular velocity changes the rotational energy, whereby the kinetic energy changes with the opposite sign.
  • the ball becomes slower and vice versa. Additionally or alternatively, too the potential energy is converted into rotational energy become.
  • liquid enters the valve e.g. at Operation of a circulation pump, by a Leakage flow device when blocking the first outlet a leakage flow into the first liquid line initiated, so the first liquid line with Liquid filled.
  • the closing element is the first Closes the outlet, so if the Liquid supply through the inlet a fixed predetermined Amount of liquid with a fixed predetermined Flow rate from the first liquid line e.g. drain through the stopped circulation pump.
  • Fig. 1 shows a schematic representation of the Rinsing liquid circuit in a dishwasher.
  • a washing compartment 1 of the dishwasher is an upper one Spray arm 2 and a lower spray arm 3 to act on the in 4 baskets of dishes stored with dishwashing liquid arranged.
  • the sprayed from spray arms 2, 3 Flushing liquid is at the bottom of the washroom 1 in the Dishwasher sump 5 caught.
  • the trapped Flushing liquid is fed via an inlet from a circulation pump 6 sucked in and through a connecting line 7 Changeover valve 8 supplied.
  • the rinsing liquid runs through a first rinse line 9 to the upper spray arm 2 and through a second rinse line 10 to the lower spray arm 3. Furthermore branches from the changeover valve 8 from a bypass line 11, which in the inlet to the circulation pump 6 opens.
  • the changeover valve 8 is schematic Reproduced side view.
  • a valve body 12 of the Switch valve 8 encloses a cavity 13 in which one Ball 14 is included.
  • the valve body 12 has a first opening 15 on the right side that defines the cavity 13 connects to the first flushing line 9.
  • the valve body 12 has a second opening 16, which connects the cavity 13 to the second flushing line 10.
  • the top of the Valve body 12 a bypass opening 17 arranged, the Cavity 13 connects to the bypass line 11.
  • a flow guide body 18 is formed, which consists of the flushing liquid flowing into the connecting line 7 aerodynamically to the first and / or second opening 15, 16 passes.
  • the ball 14 movably mounted in the cavity 13 is in the Cavity 13 through lower guide rails 19 and upper Guide rails 20 out.
  • the guide rails 19, 20 allow movement of the ball 14 along that in Fig. 2A dash-dotted line between the Closed positions at the first and second openings 15, 16.
  • a guide game will result in a small lateral offset the ball relative to the guide rails 19, 20 enables to avoid jamming the ball and lifting the Ball in the closed position in front of the bypass opening 17 enable.
  • the changeover valve 8 has three closed positions of the ball 14, which are designated in Fig. 2A with I, II and III.
  • the geometric relationships of the relative positions of the sphere are only shown schematically to the switch positions and explain the course of the guide rails.
  • the Guide rails 19, 20 Starting from the closed position I, the Guide rails 19, 20 first briefly horizontally and go then over a steep slope. The slope of the Guide rails 19, 20 are reduced in the area of Closed position III and then increases again up to the closed position II.
  • the circulation pump 6 If the circulation pump 6 is now switched off, the moves Ball 14 by the backflow of the rinsing liquid from the first flush line 9 from position I via position III towards position II. Since in position I the Guide rails 19, 20 initially parallel to the axis of the run first rinse line 9, the ball 14 is maximal accelerated. This kinetic energy is generated by the following steep rise in potential energy and due to of rolling on the lower guide rails 19 in Rotational energy converted so that the speed with which passes through the sphere of position III is reduced. Will during the slow run the area of position III, the circulation pump 6 is switched on, the ball is due to the pressure difference the flushing liquid in the cavity and the pressure in the bypass line 11 sucked to the bypass opening 17 and there recorded.
  • FIG. 2B shows a schematic side view of a second one Embodiment of the guideway for the ball 14.
  • the guide rails 19 are designed so that the slope the guideway decreases continuously. This will make the Impulse emanating from the first liquid line 9 back-flowing liquid is transferred to the ball continuously in potential energy and rotational energy converted, which also leads to a reduction in Speed in areas III and II leads.
  • 3A shows a third embodiment of the guideway in FIG schematic top view. Starting from the closed position I the distance of at least the lower guide rails 19 ' continuously up to and out of the closed position III from the closed position III to the closed position I again continuously. This takes the radius on which the Ball 14 rolls on the lower guide rails 19 ' first off and then back on. The change in the rolling radius is shown in Fig. 3B by the dotted circles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Lift Valve (AREA)
EP01113594A 2000-08-31 2001-06-15 Valve pour lave-vaisselle avec dispositif de fermeture mobile Withdrawn EP1183987A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2000142780 DE10042780A1 (de) 2000-08-31 2000-08-31 Ventil für eine Geschirrspülmaschine mit einem beweglichen angeordneten Verschliesselement
DE10042780 2000-08-31

Publications (2)

Publication Number Publication Date
EP1183987A2 true EP1183987A2 (fr) 2002-03-06
EP1183987A3 EP1183987A3 (fr) 2002-10-30

Family

ID=7654426

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01113594A Withdrawn EP1183987A3 (fr) 2000-08-31 2001-06-15 Valve pour lave-vaisselle avec dispositif de fermeture mobile

Country Status (2)

Country Link
EP (1) EP1183987A3 (fr)
DE (1) DE10042780A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1437082A2 (fr) * 2002-12-11 2004-07-14 Lg Electronics Inc. Lave-vaisselle et dispositif de contrôle du débit d'eau de lavage
KR101054190B1 (ko) 2004-05-20 2011-08-03 엘지전자 주식회사 식기 세척기의 세척수 교대 분사구조

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2918927A (en) * 1956-05-10 1959-12-29 Whirlpool Co Transfer valve
EP0237994B1 (fr) * 1986-03-19 1991-06-12 INDUSTRIE ZANUSSI S.p.A. Lave-vaisselle avec une soupape de distribution dans le cycle du liquide
US5486089A (en) * 1994-02-28 1996-01-23 Daewoo Electronics Co., Ltd. Directional changeover pump
FR2789451A1 (fr) * 1999-02-08 2000-08-11 Siebe Appliance Controls Sa Dispositif de commande de l'orientation d'un fluide

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2918927A (en) * 1956-05-10 1959-12-29 Whirlpool Co Transfer valve
EP0237994B1 (fr) * 1986-03-19 1991-06-12 INDUSTRIE ZANUSSI S.p.A. Lave-vaisselle avec une soupape de distribution dans le cycle du liquide
US5486089A (en) * 1994-02-28 1996-01-23 Daewoo Electronics Co., Ltd. Directional changeover pump
FR2789451A1 (fr) * 1999-02-08 2000-08-11 Siebe Appliance Controls Sa Dispositif de commande de l'orientation d'un fluide

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1437082A2 (fr) * 2002-12-11 2004-07-14 Lg Electronics Inc. Lave-vaisselle et dispositif de contrôle du débit d'eau de lavage
EP1437082A3 (fr) * 2002-12-11 2005-08-03 Lg Electronics Inc. Lave-vaisselle et dispositif de contrôle du débit d'eau de lavage
US7237563B2 (en) 2002-12-11 2007-07-03 Lg Electronics Inc. Dish washer and device for controlling washing water flow passage therein
KR101054190B1 (ko) 2004-05-20 2011-08-03 엘지전자 주식회사 식기 세척기의 세척수 교대 분사구조

Also Published As

Publication number Publication date
DE10042780A1 (de) 2002-03-14
EP1183987A3 (fr) 2002-10-30

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