EP0705561A1 - Dispositif de régulation de débit pour l'alimentation sélective des bras d'aspersion d'une machine à laver la vaisselle - Google Patents

Dispositif de régulation de débit pour l'alimentation sélective des bras d'aspersion d'une machine à laver la vaisselle Download PDF

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Publication number
EP0705561A1
EP0705561A1 EP95202604A EP95202604A EP0705561A1 EP 0705561 A1 EP0705561 A1 EP 0705561A1 EP 95202604 A EP95202604 A EP 95202604A EP 95202604 A EP95202604 A EP 95202604A EP 0705561 A1 EP0705561 A1 EP 0705561A1
Authority
EP
European Patent Office
Prior art keywords
rotors
wire
feed pipes
lever
movement
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
Application number
EP95202604A
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German (de)
English (en)
Other versions
EP0705561B1 (fr
Inventor
Silvano Fumagalli
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.)
Candy SpA
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Candy SpA
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Publication date
Application filed by Candy SpA filed Critical Candy SpA
Publication of EP0705561A1 publication Critical patent/EP0705561A1/fr
Application granted granted Critical
Publication of EP0705561B1 publication Critical patent/EP0705561B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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 present invention relates to a device for controlling a valve device which regulates the flow of washing liquid, for feeding the spraying rotors of a dishwasher machine selectively.
  • a device for controlling the flow of washing liquid placed between the delivery of the washing pump and the feed pipes of the two spraying rotors (upper rotor and lower rotor), which pipes are positioned inside the washing tub of the dishwasher.
  • This device comprises a membrane which is moved by an actuator between two working positions, in one of which both the pipes for feeding the rotors are open, while in the other position the pipe for feeding the lower rotor is closed, so as to allow feeding of the upper rotor alone.
  • the dishwasher can be programmed for feeding a smaller volume of water than that required for washing a complete load, without thereby giving rise to pressure drop problems or even cavitation of the washing pump, in that it is possible to feed only one of the rotors (preferably the upper one).
  • the object of the present invention is that of providing a device for controlling a valve device which regulates the flow of washing liquid feeding the spraying rotors.
  • a device for controlling a valve device which regulates a flow of washing liquid and which is placed between means for pumping the washing liquid and two feed pipes of two respective spraying rotors of a dishwasher, for selective feeding of said rotors characterised in that it comprises means for selecting the working condition of said valve device housed in a control panel of the dishwasher and operatively connected to said valve device by mechanical transmission means.
  • a fully mechanical device for controlling a valve device which regulates the feed flow of the rotors.
  • a control device comprises a knob 1 rotatably housed in a respective circular seat formed in a control panel 2, mounted in turn on a door 3 of a dishwasher.
  • the knob 1 is coupled to a small shaft 4 whereto a fork lever 5 is integrally attached, between whose two prongs 51 a small wire 6 is slidingly inserted and ending in a small ball 7, greater in diameter than the distance between the aforementioned prongs 51 (Figs. 1-3).
  • the lever 5 allows the rotational movement of the knob 1 to be transformed into the translational movement of the wire 6.
  • a first cam 8 is also attached to the shaft 4 and co-operates with an underlying positioning element 9 to determine three angular lock positions (indicated to a user by the alignment of one of three indices "A", "B” and “C” on the knob 1 with a reference notch 52 on the control panel 2, as can be seen in Fig. 4), and a further two cams 10 and 11, each of which determines, in a respective angular position of the knob 1, closure of an electrical contact between respective electrical terminals 12, 12' and 13, 13' (Figs. 1 and 3). The function of these electrical contacts is to be explained hereinbelow in the description.
  • the panel 2, near the knob 1, is also connected to a stretching device 53, which can be seen in a sectioned view in Figure 2.
  • the stretching device 53 substantially consists of a hollow cylinder 54, inside whereof a helical spring 55 is housed, which acts on a nut 56, integral with the wire 6, so as to force the wire 6 into a position of minimum extension (a position shown by an unbroken line in Figure 2): this guarantees that the wire 6 is always kept tight.
  • the spring 55 also acts as a return spring for the wire 6 when, by rotating the knob 1, there is a change from a condition of maximum extension to a condition of minimum extension of the wire 6 itself (for example, from position "C" to positions "B” or "A”).
  • the stretching device 53 is also provided with a regulation element 57 which can be screwed into the cylinder 54 and which acts as a contrast to the nut 56. By screwing or unscrewing the regulation element 57, the various tolerances can be compensated.
  • the wire 6 is slidingly inserted in a sheath 14.
  • the sheath 14 extends vertically along the wall of the door 3, and then is inserted in a gap between a washing tub 40 and a base surface 41 of the dishwasher, so as not to interfere with the door 3 during rotation through almost 90° for opening of the dishwasher.
  • the wire 6 is connected at the opposite end to a valve device 15 which regulates the flow of washing liquid, which device is placed between the delivery 42 of a washing pump 43 and two feed pipes 44 and 45 of two respective spraying rotors 46 and 47 positioned inside the washing tub 40 (Fig. 8).
  • the rotor 46 lower rotor
  • the rotor 47 upper rotor
  • the rotor 46 is placed substantially on the base of the washing tub 40, below a first loading rack (not shown)
  • the rotor 47 upper rotor
  • the valve device 15 substantially comprises a cylindrical conduit 48, divided internally by a baffle 49 into two semi cylindrical conduits 30 and 31 (Figs. 12 and 13), connected to the feed pipe 44 and to the feed pipe 45 respectively (Figs. 9-11).
  • a blade 16 integral with a rotary pin 17 (Figs. 9-11) whereto a fork lever 18, similar to the lever 5, is attached (Figs. 8 and 12).
  • the wire 6 is slidingly inserted between the prongs 32 and 33 of the lever 18, and a small ball 19 is attached at its end, with diameter greater than the distance between said prongs.
  • Rotating the knob 1 causes rotation of the shaft 4 and, consequently, that of the lever 5 integral therewith.
  • the latter causes sliding of the wire 6 inside the sheath 14, and hence rotation of the lever 18.
  • the three working positions "A", "B” and “C” of the knob 1 are translated into the same number of angular positions of the blade 16.
  • one of the contacts between the electrical terminals 12, 12' and 13, 13' closes so as to signal to a device (not shown) for measuring the volume of water to be fed that the dishwasher has been programmed to perform washing of a reduced load, and hence the volume of water to be fed is equal to the volume foreseen for this reduced load.
  • a device for measuring the volume of water to be fed that the dishwasher has been programmed to perform washing of a reduced load, and hence the volume of water to be fed is equal to the volume foreseen for this reduced load.
  • MI94A001078 Such a measuring device is for example described in the Italian patent Application no. MI94A001078.
  • the dishwasher can therefore be used traditionally for washing a complete load of twelve table settings, feeding both rotors, or it can be programmed to wash a reduced load, for example six table settings, using either the upper rack or the lower rack, according to needs, and quite simply by actuating the knob 1.
  • the knob 1 is replaced by a cursor 20, in plastic for example, housed vertically slidingly in the control panel 2 of the door 3.
  • the cursor 20 has a grip 21 projecting from the panel 2 through a slot 22.
  • the wire 6 is restrained to the cursor 20 by means of the end ball 7.
  • no lever is provided, in that the movement of the cursor 20 is already translational.
  • the cursor 20 is provided with a lateral appendage 23 integral with the cursor 20 and relatively flexible, which can be engaged in three respective positioning notches 24 formed in the panel 2.
  • Each of the notches 24 causes the cursor 20 to stop in a position wherein a reference notch 60, formed on the grip 21, is aligned with a respective index "A", "B” or “C” (Fig. 7).
  • the cursor 20 is also provided with a pair of cams 25 which, following sliding of the cursor 20 itself, cause actuation of a lever 26 of a microswitch 27, whose function is that of closing the electrical contacts between the electrical terminals 12, 12' and 13, 13'.
  • the operating principle of the cursor 20 is the same as the knob 1, with the sole exception that the movement of selecting the position of the blade 16 is translational rather than rotational.
  • FIGS 14-18 show a third embodiment of the present invention.
  • a knob 1 is again provided, rotatingly housed in a respective circular seat formed in the control panel 2.
  • the knob 1 is integral with a shaft 4 of an electric motor 38.
  • a cam 39 is also integral with the shaft 4.
  • a tilting lever 28, with its fulcrum in 29 at the panel 2 is provided with a cog 70 which engages with the cam 39.
  • the wire 6 is attached to the lever 28.
  • the cam 39 is substantially a disk having a first segment 71 with a smaller radius, a second segment 72 with a larger radius and a third segment 73 with intermediate radius.
  • the first and second segments 71, 72 have substantially equal width, while the third segment 73 has a much smaller width than the first two.
  • the control device can operate both manually and automatically.
  • a reference notch 74 located on the knob itself, is brought into one of three circular segments indicated as "A", "B” and “C” on the panel 2 (Fig. 18).
  • the cam 39 is rotated so that the cog 70 of the lever 28 engages with the segment 73 with intermediate radius (Fig. 15).
  • the lever 28 makes the wire 6 extend, and the blade 16 moves into the position of Figure 10.
  • the cam 39 is rotated in such a way that the cog 70 engages with the segment 71 of smaller radius (Fig. 16).
  • the motor 38 is started up, and the cam 39 is made to rotate automatically: the static conditions described above become dynamic conditions.
  • the cog 70 of the lever 28 engages in sequence with the three segments 71-73 of the cam 39, the time of permanence in each segment depending on the speed of rotation of the motor and of the width of the segment itself. Since the width of the segment 73 is much smaller than that of the segments 71 and 72, the phase of simultaneous opening of the two feed pipes 44 and 45 of the two rotors is a brief transition phase, and substantially the upper rotor and the lower rotor are actuated alternately.

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP95202604A 1994-10-05 1995-09-27 Dispositif de régulation de débit pour l'alimentation sélective des bras d'aspersion d'une machine à laver la vaisselle Expired - Lifetime EP0705561B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI942027A IT1271243B (it) 1994-10-05 1994-10-05 Dispositivo di comando per un dispositivo valvolare di controllo del flusso di liquido di lavaggio, per alimentare selettivamente le giranti irroratrici di una macchina lavastoviglie
ITMI942027 1994-10-05

Publications (2)

Publication Number Publication Date
EP0705561A1 true EP0705561A1 (fr) 1996-04-10
EP0705561B1 EP0705561B1 (fr) 1998-08-19

Family

ID=11369651

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95202604A Expired - Lifetime EP0705561B1 (fr) 1994-10-05 1995-09-27 Dispositif de régulation de débit pour l'alimentation sélective des bras d'aspersion d'une machine à laver la vaisselle

Country Status (3)

Country Link
EP (1) EP0705561B1 (fr)
DE (1) DE69504164T2 (fr)
IT (1) IT1271243B (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0943282A2 (fr) * 1998-03-20 1999-09-22 AEG Hausgeräte GmbH Lave-vaiselle
WO2000022973A1 (fr) * 1998-10-16 2000-04-27 Arçelik A.Ş. Lave-vaisselle a paniers de lavage commandes de maniere independante
EP1101435A2 (fr) 1999-11-16 2001-05-23 ELTEK S.p.A. Dispositif d'arrêt d'un fluide, en particulier pour des lave-linges
WO2009027372A1 (fr) * 2007-08-31 2009-03-05 BSH Bosch und Siemens Hausgeräte GmbH Procédé permettant de faire fonctionner un lave-vaisselle
DE102005043923B4 (de) * 2004-09-14 2009-10-29 Lg Electronics Inc. Geschirrspüler
US7614409B2 (en) 2004-09-14 2009-11-10 Lg Electronics Inc. Dishwasher
ITPR20130023A1 (it) * 2013-03-29 2014-09-30 Indesit Co Spa Lavastoviglie.
EP3636972A1 (fr) * 2018-10-10 2020-04-15 Whirlpool Corporation Soupape de dérivation à orifices multiples pour lave-vaiselle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100617121B1 (ko) * 2004-09-16 2006-08-31 엘지전자 주식회사 식기 세척기의 제어방법

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2431278A3 (fr) * 1978-07-21 1980-02-15 Licentia Gmbh Machine a laver la vaisselle
FR2443231A2 (fr) * 1978-12-08 1980-07-04 Esswein Sa Procede de lavage de la vaisselle, systeme de mise en oeuvre de ce procede, et machine a laver la vaisselle munie d'un tel systeme
EP0054448A1 (fr) * 1980-11-27 1982-06-23 Esswein S.A. Dispositif de distribution d'eau, et lave-vaisselle équipé d'un tel dispositif
FR2505643A1 (fr) * 1981-05-14 1982-11-19 Candy Ind Spa Lave-vaisselle a organes de commutation pour l'alimentation alternee en eau des deux etages
FR2523430A3 (fr) * 1982-03-16 1983-09-23 Bosch Siemens Hausgeraete Lave-vaisselle avec pompe de circulation realisee sous la forme d'une pompe centrifuge
EP0095446A1 (fr) * 1982-05-26 1983-11-30 INDESIT INDUSTRIA ELETTRODOMESTICI ITALIANA S.p.A. Dispositif d'alimentation par alternance des bras d'arrosage d'un lave-vaisselle
EP0237994A2 (fr) * 1986-03-19 1987-09-23 INDUSTRIE ZANUSSI S.p.A. Lave-vaisselle avec une soupape de distribution dans le cycle du liquide

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2431278A3 (fr) * 1978-07-21 1980-02-15 Licentia Gmbh Machine a laver la vaisselle
FR2443231A2 (fr) * 1978-12-08 1980-07-04 Esswein Sa Procede de lavage de la vaisselle, systeme de mise en oeuvre de ce procede, et machine a laver la vaisselle munie d'un tel systeme
EP0054448A1 (fr) * 1980-11-27 1982-06-23 Esswein S.A. Dispositif de distribution d'eau, et lave-vaisselle équipé d'un tel dispositif
FR2505643A1 (fr) * 1981-05-14 1982-11-19 Candy Ind Spa Lave-vaisselle a organes de commutation pour l'alimentation alternee en eau des deux etages
FR2523430A3 (fr) * 1982-03-16 1983-09-23 Bosch Siemens Hausgeraete Lave-vaisselle avec pompe de circulation realisee sous la forme d'une pompe centrifuge
EP0095446A1 (fr) * 1982-05-26 1983-11-30 INDESIT INDUSTRIA ELETTRODOMESTICI ITALIANA S.p.A. Dispositif d'alimentation par alternance des bras d'arrosage d'un lave-vaisselle
EP0237994A2 (fr) * 1986-03-19 1987-09-23 INDUSTRIE ZANUSSI S.p.A. Lave-vaisselle avec une soupape de distribution dans le cycle du liquide

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0943282A2 (fr) * 1998-03-20 1999-09-22 AEG Hausgeräte GmbH Lave-vaiselle
EP0943282A3 (fr) * 1998-03-20 2000-04-12 AEG Hausgeräte GmbH Lave-vaiselle
WO2000022973A1 (fr) * 1998-10-16 2000-04-27 Arçelik A.Ş. Lave-vaisselle a paniers de lavage commandes de maniere independante
EP1101435A2 (fr) 1999-11-16 2001-05-23 ELTEK S.p.A. Dispositif d'arrêt d'un fluide, en particulier pour des lave-linges
EP1101435A3 (fr) * 1999-11-16 2002-06-12 ELTEK S.p.A. Dispositif d'arrêt d'un fluide, en particulier pour des lave-linges
DE102005043923B4 (de) * 2004-09-14 2009-10-29 Lg Electronics Inc. Geschirrspüler
US7614409B2 (en) 2004-09-14 2009-11-10 Lg Electronics Inc. Dishwasher
WO2009027372A1 (fr) * 2007-08-31 2009-03-05 BSH Bosch und Siemens Hausgeräte GmbH Procédé permettant de faire fonctionner un lave-vaisselle
CN101784221B (zh) * 2007-08-31 2012-12-26 Bsh博世和西门子家用器具有限公司 洗碗机的操作方法
US8834644B2 (en) 2007-08-31 2014-09-16 Bsh Bosch Und Siemens Hausgeraete Gmbh Apparatus and method for the operation of a dishwasher
ITPR20130023A1 (it) * 2013-03-29 2014-09-30 Indesit Co Spa Lavastoviglie.
WO2014155333A1 (fr) * 2013-03-29 2014-10-02 Indesit Company S.P.A. Lave-vaisselle
EP3636972A1 (fr) * 2018-10-10 2020-04-15 Whirlpool Corporation Soupape de dérivation à orifices multiples pour lave-vaiselle

Also Published As

Publication number Publication date
DE69504164D1 (de) 1998-09-24
IT1271243B (it) 1997-05-27
EP0705561B1 (fr) 1998-08-19
DE69504164T2 (de) 1999-01-21
ITMI942027A1 (it) 1996-04-05
ITMI942027A0 (it) 1994-10-05

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