EP1602315B1 - Vorrichtung zum Verteilen und zum Heizen des Wassers in einer Waschmaschine , insbesondere in einer Geschirrspülmaschine - Google Patents

Vorrichtung zum Verteilen und zum Heizen des Wassers in einer Waschmaschine , insbesondere in einer Geschirrspülmaschine Download PDF

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Publication number
EP1602315B1
EP1602315B1 EP05104211A EP05104211A EP1602315B1 EP 1602315 B1 EP1602315 B1 EP 1602315B1 EP 05104211 A EP05104211 A EP 05104211A EP 05104211 A EP05104211 A EP 05104211A EP 1602315 B1 EP1602315 B1 EP 1602315B1
Authority
EP
European Patent Office
Prior art keywords
water
distributor
flow
outlet pipes
heated water
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
EP05104211A
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English (en)
French (fr)
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EP1602315A1 (de
Inventor
Walter Burigo
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.)
Invensys Controls Italy SRL
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Invensys Controls Italy SRL
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Publication date
Application filed by Invensys Controls Italy SRL filed Critical Invensys Controls Italy SRL
Publication of EP1602315A1 publication Critical patent/EP1602315A1/de
Application granted granted Critical
Publication of EP1602315B1 publication Critical patent/EP1602315B1/de
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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
    • 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
    • A47L15/4285—Water-heater arrangements

Definitions

  • the present invention concerns a distributor/heating device, used in washing machines, particularly dishwashers, in order to heat, in a substantially instantaneous manner, a flow of water supplied from the water mains, or re-circled water, and to distribute the heated water to at least two nozzle-bearing bars, from which it is delivered at pressure to the dishes or other objects to be washed.
  • heating devices of a substantially instantaneous type are known, the function of which is to take the temperature of the water from the value at which it is supplied by the water-mains to a suitable temperature for washing, for example around 75°C.
  • nozzle-bearing bars so as to deliver the pressurized water, simultaneously, alternately or according to a set program, to one or more zones inside the dishwasher.
  • Each of the nozzle-bearing bars can be arranged in cooperation with a specific level or sector of the dishwasher where the dishes to be washed are located.
  • This device has shown itself to be satisfactory in terms of limited bulk, compact structure, ease of positioning and assembly. However, it also has some disadvantages.
  • a first disadvantage is that the flow of water that flows through the distributor/heating device, due to the diversions to which it is subjected in a short transit segment, suffers high losses of load which considerably reduce the outlet pressure of the water compared with its pressure at inlet. This can even entail a considerable reduction in the washing efficiency or, alternatively, an over-sizing of the feed pump.
  • the purpose of the present invention is to achieve a distributor/heating device for washing machines, particularly dishwashers, which can obviate the disadvantages mentioned above, and to be more exact can reduce to a minimum the losses of load of the flow of water in its passage between inlet and outlet of the device.
  • a distributor/heating device comprises a first body, or heating body, substantially tubular, inside which is installed the resistance element which determines the instantaneous heating of the water when a flow of water is sent inside said first tubular body.
  • a second body, or distributor body, distinct from said first body and at least partly hollow inside, is assembled as a substantial axial extension of said first body; a motorized flow-diversion device is mounted on the second body, able to be activated to selectively send the heated water towards one and/or the other of at least two outlet pipes made on said second body.
  • the two outlet pipes are associated, in a known manner, with pipes that transport the heated water towards at least a respective nozzle-bearing bar arranged in a relative zone of the washing compartment.
  • the motor and the relative kinematic system that transmits motion to the flow-diversion element are assembled at one end of the second body, opposite the end of the first body through which the water is fed.
  • the outer surface of the second body has rapid attachment means so as to associate with said distributor/heating device one or more sensor-bearing groups.
  • Said sensors can be one or another of a turbidity sensor, a temperature sensor, a pressure sensor or other. For every sensor-bearing group there may also be present two or more of said sensors.
  • said rapid attachment means are arranged upstream of the water outlet pipes from the distributor/heating device.
  • the first body, or heating body advantageously has a reduced length, that is, a length just sufficient to ensure that the desired temperature value of the water at outlet is obtained. Thanks to this, even when a second body is arranged as an axial extension of the first body, or heating body, the overall length of the device, even if greater than the single-body device in the state of the art, is in any case limited to a reduced value and hence does not entail particular problems of bulk, positioning and assembly.
  • the path of the flow of water between inlet and outlet of the device is more linear than in known devices, since the device develops linearly without causing abrupt changes in direction between the water inlet and the entrance of the two outlet pipes.
  • the temperature reached by the device, and particularly of the second body is never particularly high and therefore it does not necessarily require particular insulating safety coverings.
  • the use of two distinct bodies leaves wide surfaces free, available in the second body for the quick installation of sensors of various types, which are then easily removable. Moreover, it facilitates repairs, maintenance, the replacement of components, the setting up of accessories and other.
  • Fig. 1 shows a cutaway view of a washing machine 20 which uses a distributor/heating device 10 according to the present invention.
  • the washing machine 20 in this case is a dishwasher with a washing compartment 19 where two respective baskets are mounted to carry the dishes, a lower basket 18a and an upper basket 18b. With every basket 18a and 18b a respective rotating nozzle-bearing bar 17a and 17b is associated (not shown), which serve to deliver water under pressure against the dishes arranged in the baskets 18a, 18b.
  • the rotating bars 17a and 17b are connected by means of respective pipes 16a and 16b to the distributor/heating device 10, which has the double function of taking the temperature of the water to a suitable washing temperature, for example about 75°C, and to direct alternately, or simultaneously, or in any case according to a defined or definable program, the heated water towards one or the other of the pipes 16a, 16b.
  • a suitable washing temperature for example about 75°C
  • the device 10 is associated with a pump 15, of a known type, which feeds, at a determinate pressure, water arriving from the water mains or re-circled water taken from the accumulation well 14.
  • the distributor/heating device 10 is shown in fig. 2. It comprises a first body 11, or heating body, of a relatively limited length, and consisting of a tubular casing 12, with a circular or parallelepiped section, inside which a resistance is arranged, indicated by the reference number 13. On the inlet side, the casing 12 has a coupling 21 to connect to the pipe 22 that feeds the water from the pump 15.
  • the first body 11 is connected, as a substantial axial extension, with a second body 23, or distributor body, on the outer periphery of which two outlet pipes are mounted, respectively 24a and 24b, able to be respectively connected with the pipe 16a or the pipe 16b to provide heated water to the respective rotary nozzle-bearing bars.
  • the outlet pipes 24a, 24b are able to be selectively opened and closed thanks to the activation of a flow-diversion device 30 comprising a motor 25, a gear reduction system 26 and an opening/closing blade 27.
  • the gear reduction system 26 comprises a containing box 31, inside which a shaft 28 is arranged, made to rotate by the motor 25, a toothed wheel 29 connected kinematically with said shaft 28 in order to move the blade 27, so as to open alternately or simultaneously the pipes 24a, 24b, according to a pre-set washing program.
  • the second body 23 can be coupled axially with the first body 11 by means of a coupling through interference, obtained by forcefully inserting a coupling collar 32 made at the end of the first body 11 opposite the end where there is the coupling 21, into an insertion bushing 33 present at the end of the second body 23 opposite the end where there is the motor 25.
  • Circumferential sealing means may be present, for example such as an O-ring, in order to guarantee the necessary hydraulic seal.
  • the device 10 allows to heat, in a substantially instantaneous manner, a flow of water fed by the pump 15 and to make it emerge from one and/or the other of the pipes 24a, 24b, according to the commands imparted to the motor 25, without causing, during the passage of the water inside it, particular losses of load and falls in pressure.
  • This is because the path followed by the water, from inlet (indicated by the arrow 36) to outlet (indicated by the arrow 37) is substantially linear and does not meet particular obstacles or abrupt variations in direction.
  • at least the second body 23 is not subject to particular increases in temperature, and therefore it does not require specific insulating safety coverings.
  • a sensor-bearing group 38 can be mounted, in such a manner that it can be easily and quickly removed, on the outer surface of the second body 23 thanks to the presence of rapid attachment means 39 made on said second body 23.
  • the presence of an ample, free circumferential surface between the bushing 33 and the outlet pipes 24a, 24b, allows a possible simultaneous assembly of two or more sensor-bearing groups 38 angularly or longitudinally off-set, in order to install a large number of sensors operating simultaneously in combination with the distributor/heating device 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)

Claims (8)

  1. Verteiler-/Heizvorrichtung für Waschmaschinen (20), insbesondere Geschirrspülmaschinen, fähig, einen Wasserstrom im Wesentlichen während des Durchlaufens zu erhitzen und das erhitzte Wasser an wenigstens zwei Zuführelemente (17a, 17b) zu verteilen, wobei die Vorrichtung (10) einen ersten Körper (11) umfasst, in dessen Innerem ein Widerstandselement (13) installiert ist, um das Wasser zu erhitzen, dadurch gekennzeichnet, dass die Vorrichtung einen zweiten Körper (23), unterschiedlich von dem ersten Körper (11) und wenigstens teilweise hohl im Inneren, als eine im Wesentlichen axiale Verlängerung an dem ersten Körper (11) montiert und eine motorisierte Flussteilungsvorrichtung (30) umfasst, die auf dem zweiten Körper (23) montiert ist und aktiviert werden kann, um das erhitzte Wasser selektiv zu einem und/oder dem anderen von wenigstens zwei Auslassrohren (24a, 24b), die auf dem zweiten Körper (23) gefertigt sind, zu senden.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die zwei Auslassrohre (24a, 24b) mit jeweiligen Rohren (16a, 16b) verbunden sind, die fähig sind, das erhitzte Wasser zu wenigstens einem jeweiligen Zuführelement (17a, 17b) zu transportieren.
  3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Flussteilungsvorrichtung (30) wenigstens einen Motor (25) und ein kinematisches System (28, 29) umfasst, fähig, um ein Teilelement (27) selektiv anzutreiben, um den Strom erhitzten Wassers zu einem und/oder dem anderen von den Auslassrohren (24a, 24b) zu senden.
  4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass der Motor (25) und das kinematische System (28, 29) an einem Ende des zweiten Körpers (23), gegenüberliegend dem Ende des zweiten Körpers (11) durch den das Wasser gespeist wird, angebracht sind.
  5. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Außenfläche des zweiten Körpers (23) Schnellbefestigungseinrichtungen (39) enthält, um wenigstens einen Sensorlagerblock (38) mit der Verteiler-/Heizvorrichtung (10) zu verbinden.
  6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass ein Sensor oder mehrere Sensoren von entweder einem Trübungssensor, einem Temperatursensor, einem Drucksensor oder anderen vorhanden ist bzw. sind.
  7. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass sie zwei oder mehr Schnellbefestigungseinrichtungen (39) umfasst, die winklig oder in Längsrichtung auf der Außenfläche des zweiten Körpers (23) versetzt sind.
  8. Vorrichtung nach Anspruch 5 oder 7, dadurch gekennzeichnet, dass die Schnellbefestigungseinrichtungen (39) stromaufwärts der Auslassrohre (24a, 24b) des Wassers der Verteiler-/Heizvorrichtung (10) angeordnet sind.
EP05104211A 2004-05-20 2005-05-18 Vorrichtung zum Verteilen und zum Heizen des Wassers in einer Waschmaschine , insbesondere in einer Geschirrspülmaschine Active EP1602315B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUD20040103 2004-05-20
IT000103A ITUD20040103A1 (it) 2004-05-20 2004-05-20 Dispositivo distributore/riscaldatore per

Publications (2)

Publication Number Publication Date
EP1602315A1 EP1602315A1 (de) 2005-12-07
EP1602315B1 true EP1602315B1 (de) 2007-09-19

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Application Number Title Priority Date Filing Date
EP05104211A Active EP1602315B1 (de) 2004-05-20 2005-05-18 Vorrichtung zum Verteilen und zum Heizen des Wassers in einer Waschmaschine , insbesondere in einer Geschirrspülmaschine

Country Status (4)

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EP (1) EP1602315B1 (de)
AT (1) ATE373442T1 (de)
DE (1) DE602005002491T2 (de)
IT (1) ITUD20040103A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20090223A1 (it) * 2009-03-23 2010-09-24 Elbi Int Spa Macchina lavastoviglie
WO2023047232A1 (en) 2021-09-21 2023-03-30 Elmarc S.R.L. Electric resistance comprising an immersion device for determining at least the turbidity level of a liquid

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3626955A1 (de) * 1986-08-08 1988-02-18 Bosch Siemens Hausgeraete Durchlauferhitzer
DE19857103A1 (de) * 1998-12-10 2000-06-15 Bsh Bosch Siemens Hausgeraete Haushalt-Geschirrspülmaschine
DE19857101B4 (de) * 1998-12-10 2004-04-01 BSH Bosch und Siemens Hausgeräte GmbH Haushalt-Geschirrspülmaschine
DE10133130A1 (de) * 2001-07-07 2003-01-16 Miele & Cie Umwälzpumpe mit/ohne Heizungseinrichtung
DE10163181A1 (de) * 2001-12-21 2003-07-10 Bsh Bosch Siemens Hausgeraete Umsteuereinrichtung, insbes. für eine Geschirrspülmaschine

Also Published As

Publication number Publication date
DE602005002491T2 (de) 2008-06-19
DE602005002491D1 (de) 2007-10-31
EP1602315A1 (de) 2005-12-07
ATE373442T1 (de) 2007-10-15
ITUD20040103A1 (it) 2004-08-20

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