EP1864603A2 - Lave-vaisselle avec récupération de chaleur - Google Patents

Lave-vaisselle avec récupération de chaleur Download PDF

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Publication number
EP1864603A2
EP1864603A2 EP07011659A EP07011659A EP1864603A2 EP 1864603 A2 EP1864603 A2 EP 1864603A2 EP 07011659 A EP07011659 A EP 07011659A EP 07011659 A EP07011659 A EP 07011659A EP 1864603 A2 EP1864603 A2 EP 1864603A2
Authority
EP
European Patent Office
Prior art keywords
heat
phase
process water
dishwasher
heat transfer
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
EP07011659A
Other languages
German (de)
English (en)
Other versions
EP1864603A3 (fr
EP1864603B1 (fr
Inventor
Juerg Werner
Ernst Dober
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.)
V-Zug AG
Original Assignee
V-Zug AG
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 V-Zug AG filed Critical V-Zug AG
Priority to EP20070011659 priority Critical patent/EP1864603B1/fr
Priority to DE200750002839 priority patent/DE502007002839D1/de
Publication of EP1864603A2 publication Critical patent/EP1864603A2/fr
Publication of EP1864603A3 publication Critical patent/EP1864603A3/fr
Application granted granted Critical
Publication of EP1864603B1 publication Critical patent/EP1864603B1/fr
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
    • A47L15/42—Details
    • A47L15/4291—Recovery arrangements, e.g. for the recovery of energy or water
    • 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
    • A47L15/4229—Water softening arrangements
    • A47L15/4231—Constructional details of the salt container or the ion exchanger

Definitions

  • the invention relates to a dishwasher with heat recovery according to the preamble of claim 1.
  • the dishes to be washed are cleaned with process water in several consecutive process phases.
  • the water is heated in at least two of these process phases.
  • the dishwasher thus has heat transfer means which are able to transfer heat between the process water and the water decalcification device of the device.
  • the heat transfer means are controlled by the controller of the dishwasher in such a way that they transport heat from the process water into the water decalcifying device in a first process phase in order then to transport this heat from the water decalcifying apparatus back into the process water in a second, later process phase.
  • the Wasserentkalkungsvortechnische the device is used as a heat storage. Since this has a relatively large thermal mass and is present anyway in each device, it is particularly suitable as a buffer for heat. Thus, a separate heat storage omitted entirely or at least smaller.
  • the Wasserentkalkungsvoriques has a brine tank for receiving brine.
  • the heat transfer means are configured to transfer heat between that received in the brine tank Solewasser and the process water can transfer.
  • the brine water is used as a heat storage.
  • the dishwasher shown in Fig. 1 has a tub 10 for receiving the dishes to be washed.
  • spray arms 11 or other spray devices are arranged in a conventional manner, with which process water can be sprayed onto the dishes.
  • a process water circuit is connected, with which the process water can be pumped.
  • This has a suction tube 12, with which the water can be sucked out of the sump 13 of the tub. From the suction pipe 12, the water passes to a pump 14, from where it is conveyed via lines 15 to the spray arms 11.
  • a supply line 16 is provided, from which water via three valves 17, 18, 19 can be tapped. These valves, as well as all other functions and components of the device, are controlled by a controller (not shown).
  • valve 17 By opening the first valve 17 fresh water can be passed directly into the sump 13 of the tub 10. Alternatively or additionally, by opening the second valve 18 water via a Wasserentkalkungsvoriques 20 also in the sump 13th be initiated.
  • the valve 17 and the corresponding supply line can also be omitted in simple models.
  • the desalination apparatus 20 comprises a brine container 21 and a resin container 22.
  • an ion exchange resin is arranged, with which water can be softened in a conventional manner.
  • brine tank 21 is provided with brine water. These are usually salt water. By opening the third valve 19, the brine water can be passed through the resin container 22 so as to perform regeneration.
  • the device For discharging contaminated process water, the device has a drain 23 with a drain pump 24.
  • heat transfer agents are provided, which are described below.
  • the heat transfer means comprise a transfer circuit 25 which is shown with a bold line.
  • a heat transfer medium is pumped by a circulation pump 26 between a first heat exchanger 28 and a second heat exchanger 29.
  • the heat transfer medium may be, for example, water or another fluid.
  • the first heat exchanger 28 is arranged at the process water circuit, while the second heat exchanger 29 is located at the Wasserentkalkungsvoriques 20.
  • the first heat exchanger 28 is thermally connected to the suction pipe 12, and the second heat exchanger 29 with the brine tank 21st
  • the dishes are pre-rinsed in a first process phase, the pre-rinse phase.
  • the process water is pumped off and fresh water is supplied for the following main cleaning phase. This is pumped by the pump 14 and heated by a (not shown) heater. At the same time a dishwashing detergent is added.
  • the heat transfer means are used to transfer heat via the water decalcification device 20 from a first process phase to a later, second process phase.
  • first process phase and second process phase designate those process phases in which heat is transferred between the process water and the descaling device - the terms are not to be interpreted as meaning that the first process phase is necessarily the process phase that is carried out at the beginning of the cleaning process, and the second process phase does not necessarily follow directly to the first phase of the process.
  • the removal of heat takes place as possible towards the end of the first process phase before or during the pumping out of the process water.
  • the pumps 14 and 26 are put into operation, for example, during 2 to 3 minutes, so that the heated process water flows through the suction pipe 12 there to give heat in the first heat exchanger 28 to the heat transfer medium.
  • the heated heat transfer medium is conveyed by the pump 26 to the second heat exchanger 29, where it in turn emits heat to the Wasserentkalkungsvortechnisch 20 and in particular to the brine.
  • the first process phase, from which the heat is extracted is the main cleaning phase, as this is usually the first phase in which the process water is heated to a high temperature.
  • the process water is at least partially replaced by fresh water, whereby the temperature in the tub decreases. It may then optionally follow one or more process phases in which the pump 26 remains switched off and the heat is stored in the descaling device 20. If the first process phase is e.g. the main cleaning phase, the pump 26 may be switched off in the following intermediate flushing phase.
  • the heat transfer from the desalination device 20 to the process water preferably takes place at the beginning of the second process phase by switching on the pumps 14 and 26.
  • the pump 26 is operated, for example, as long as the temperature of the transfer medium is higher by a threshold than that of the process water.
  • heat can also be supplied to the process water with a heater arranged in the process water circuit.
  • the heater is activated only after completion of the heat transfer, since otherwise the Wasserentkalkungsvorraum less heat can be removed.
  • the pump 14 is preferably operated at reduced power, so that the process water exits only via the lower spray arm and does not act on the dishes. This allows a larger amount of heat to be transferred from the water decalcification device, as if the process water already ran during the heat transfer over the hot dishes and would heat up in this way faster. Only after completion of the heat transfer, the pump is operated with higher power.
  • FIG. 1 A second embodiment of the invention is shown in FIG. This differs from the embodiment according to FIG. 1 in that the first heat exchanger 28 is not arranged on the suction tube 12 but on one of the lines 15 downstream of the pump 14.
  • the first heat exchanger 28 is in this case on the line to the lower spray arm, so that in the manner already described during the heat transfer in the second process phase, the pump 14 can be operated with reduced power.
  • FIG. A third embodiment of the invention is shown in FIG. It differs from the embodiment of FIG. 1 in that no separate circuit is provided for a heat transfer medium. Rather, the heat transfer means are designed so that they can direct process water through the second heat exchanger 29. For this purpose, a changeover switch 32 is provided in the process water circuit, with which the process water can be selectively guided either directly to the spray arms 11 or first through the second heat exchanger 29 and only then to the spray arms 11.
  • the process water from the controller of the device is passed through the second heat exchanger 29, while in normal operation of the device, the switch 32 is set so that the water from the pump 14 directly to the spray arms 11th flows.
  • Switch 32 may also be continuously controllable and, for example, conduct only a portion of the water through the heat exchanger 29.
  • the first heat exchanger and the pump 26 can be omitted.
  • FIG. A fourth embodiment of the invention is shown in FIG. It differs from the embodiment of FIG. 1 again in that no separate circuit is provided for a heat transfer medium.
  • the heat transfer means are configured so that they can convey brine through the first heat exchanger 28. For this purpose, the brine from the brine tank 21 with the pump 26 to the first heat exchanger 28 and then be promoted back.
  • the second heat exchanger can be omitted.
  • the first heat exchanger 28 may also be arranged after the pump 14, as shown in the embodiment according to FIG.
  • the heat capacity of the water descaling device 20 can be increased by selecting the brine container larger than conventional devices, and e.g. is set at 2 to 3 liters.
  • a thermal insulation is arranged around the brine tank 21, so that the heat can be stored longer in the water decalcification device 20.
  • the first heat exchanger 28 can also be arranged at the outlet 23, so that the heat transfer from the process water to the water decalcification device 20 takes place only when pumping off at the end of the first process phase.
  • the supply line for the process water can be passed through a heat exchanger which is in contact with the Wasserentkalkungsvortechnik 20.
  • it can additionally be arranged a heat exchanger in the process water circuit.
  • the first heat exchanger 28 can also be arranged on the sump 13 or elsewhere on the tub 11.
  • the heat transfer means are equipped with a transfer circuit 25 for a heat transfer medium.
  • the heat transfer agent can also be configured as an actual heat pump by an expansion valve is provided between the two heat exchangers 28 and 29 in a conventional manner, so that (depending on the direction of the pump 26) one of the two heat exchangers as evaporator and the other Capacitor works. This makes it possible to improve the heat transfer efficiency.
  • the brine tank 21 and the brine placed therein act as heat storage.
  • the resin container 22 and the water therein can be used as a heat storage.

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  • Washing And Drying Of Tableware (AREA)
EP20070011659 2007-06-14 2007-06-14 Lave-vaisselle avec récupération de chaleur Active EP1864603B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20070011659 EP1864603B1 (fr) 2007-06-14 2007-06-14 Lave-vaisselle avec récupération de chaleur
DE200750002839 DE502007002839D1 (de) 2007-06-14 2007-06-14 Geschirrspüler mit Wärmerückgewinnung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20070011659 EP1864603B1 (fr) 2007-06-14 2007-06-14 Lave-vaisselle avec récupération de chaleur

Publications (3)

Publication Number Publication Date
EP1864603A2 true EP1864603A2 (fr) 2007-12-12
EP1864603A3 EP1864603A3 (fr) 2007-12-26
EP1864603B1 EP1864603B1 (fr) 2010-02-17

Family

ID=38564465

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070011659 Active EP1864603B1 (fr) 2007-06-14 2007-06-14 Lave-vaisselle avec récupération de chaleur

Country Status (2)

Country Link
EP (1) EP1864603B1 (fr)
DE (1) DE502007002839D1 (fr)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2064982A1 (fr) 2009-02-09 2009-06-03 V-Zug AG Lave-vaisselle doté d'une pompe à chaleur
EP2193741A2 (fr) 2010-03-15 2010-06-09 V-Zug AG Appareil ménager doté d'un accumulateur thermique et d'un réservoir de cogénérateur
DE102008054833A1 (de) * 2008-12-17 2010-07-01 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung zur Wiedergewinnung und Speicherung von Wärmeenergie aus einem Abwasser
EP2363054A1 (fr) * 2010-03-02 2011-09-07 Indesit Company S.p.A. Procédé et machine permettant de traiter la vaisselle
EP2465405A3 (fr) * 2012-03-20 2012-06-27 V-Zug AG Lave-vaisselle doté d'un accumulateur thermique
US20120227767A1 (en) * 2011-03-07 2012-09-13 Steelco Spa Washing Machine and Corresponding Washing Method
WO2013143576A1 (fr) * 2012-03-27 2013-10-03 Electrolux Home Products Corporation N.V. Lave-vaisselle et procédé de fonctionnement d'un lave-vaisselle
EP2682039A1 (fr) * 2012-07-03 2014-01-08 Miele & Cie. KG Lave-vaisselle doté d'une pompe à chaleur
EP2692937A1 (fr) * 2012-07-30 2014-02-05 Electrolux Home Products Corporation N.V. Machine à laver
WO2015007609A1 (fr) * 2013-07-17 2015-01-22 BSH Bosch und Siemens Hausgeräte GmbH Lave-vaisselle comprenant une section de conduite tubulaire d'évacuation intégrée dans un récipient d'eau
CN105392937A (zh) * 2013-06-11 2016-03-09 伊莱克斯家用电器股份公司 洗涤机
WO2016177718A1 (fr) * 2015-05-06 2016-11-10 Arcelik Anonim Sirketi Lave-vaisselle comprenant une pompe à chaleur
WO2017023548A1 (fr) * 2015-07-31 2017-02-09 Illinois Tool Works Inc. Lave-vaisselle comprenant un système de récupération de chaleur
DE102015115036A1 (de) * 2015-09-08 2017-03-09 Miele & Cie. Kg Geschirrspülmaschine, insbesondere Haushaltsgeschirrspülmaschine
EP3372140A1 (fr) * 2017-03-08 2018-09-12 Miele & Cie. KG Lave-vaisselle, en particulier lave-vaisselle électroménager
WO2018215331A1 (fr) * 2017-05-23 2018-11-29 Miele & Cie. Kg Lave-vaisselle, en particulier lave-vaisselle ménager
WO2018215343A1 (fr) * 2017-05-23 2018-11-29 Miele & Cie. Kg Appareil de nettoyage et procédé pour faire fonctionner un appareil de nettoyage
DE102013114273B4 (de) * 2013-12-18 2019-11-14 Miele & Cie. Kg Geschirrspülmaschine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12133620B2 (en) 2022-02-11 2024-11-05 Whirlpool Corporation Dishwasher with direct water supply

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3901169A1 (de) * 1989-01-17 1990-07-19 Licentia Gmbh Verfahren und vorrichtung zur rueckgewinnung von waermeenergie
IT235048Y1 (it) * 1994-12-14 2000-03-31 Zanussi Elettrodomestici Lavastoviglie con basamento portante di plastica

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008054833A1 (de) * 2008-12-17 2010-07-01 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung zur Wiedergewinnung und Speicherung von Wärmeenergie aus einem Abwasser
EP2446795A3 (fr) * 2009-02-09 2012-07-25 V-Zug AG Lave-vaisselle doté d'une pompe à chaleur
EP2215954A1 (fr) * 2009-02-09 2010-08-11 V-Zug AG Lave-vaisselle doté d'une pompe à chaleur
EP2215955A1 (fr) * 2009-02-09 2010-08-11 V-Zug AG Lave-vaisselle doté d'une pompe à chaleur
EP2446796A3 (fr) * 2009-02-09 2012-07-25 V-Zug AG Lave-vaisselle doté d'une pompe à chaleur
EP2064982A1 (fr) 2009-02-09 2009-06-03 V-Zug AG Lave-vaisselle doté d'une pompe à chaleur
EP2363054A1 (fr) * 2010-03-02 2011-09-07 Indesit Company S.p.A. Procédé et machine permettant de traiter la vaisselle
EP2193741A2 (fr) 2010-03-15 2010-06-09 V-Zug AG Appareil ménager doté d'un accumulateur thermique et d'un réservoir de cogénérateur
EP2193741A3 (fr) * 2010-03-15 2010-09-08 V-Zug AG Appareil ménager doté d'un accumulateur thermique et d'un réservoir de cogénérateur
US20120227767A1 (en) * 2011-03-07 2012-09-13 Steelco Spa Washing Machine and Corresponding Washing Method
US9592311B2 (en) * 2011-03-07 2017-03-14 Steelco Spa Washing machine and corresponding washing method
EP2465405A3 (fr) * 2012-03-20 2012-06-27 V-Zug AG Lave-vaisselle doté d'un accumulateur thermique
WO2013143576A1 (fr) * 2012-03-27 2013-10-03 Electrolux Home Products Corporation N.V. Lave-vaisselle et procédé de fonctionnement d'un lave-vaisselle
EP2682039A1 (fr) * 2012-07-03 2014-01-08 Miele & Cie. KG Lave-vaisselle doté d'une pompe à chaleur
WO2014019996A1 (fr) * 2012-07-30 2014-02-06 Electrolux Home Products Corporation N.V. Machine à laver
EP2692937A1 (fr) * 2012-07-30 2014-02-05 Electrolux Home Products Corporation N.V. Machine à laver
CN105392937A (zh) * 2013-06-11 2016-03-09 伊莱克斯家用电器股份公司 洗涤机
WO2015007609A1 (fr) * 2013-07-17 2015-01-22 BSH Bosch und Siemens Hausgeräte GmbH Lave-vaisselle comprenant une section de conduite tubulaire d'évacuation intégrée dans un récipient d'eau
DE102013114273B4 (de) * 2013-12-18 2019-11-14 Miele & Cie. Kg Geschirrspülmaschine
WO2016177718A1 (fr) * 2015-05-06 2016-11-10 Arcelik Anonim Sirketi Lave-vaisselle comprenant une pompe à chaleur
US10285562B2 (en) 2015-07-31 2019-05-14 Illinois Tool Works Inc. Warewasher with heat recovery system
WO2017023548A1 (fr) * 2015-07-31 2017-02-09 Illinois Tool Works Inc. Lave-vaisselle comprenant un système de récupération de chaleur
DE102015115036A1 (de) * 2015-09-08 2017-03-09 Miele & Cie. Kg Geschirrspülmaschine, insbesondere Haushaltsgeschirrspülmaschine
EP3372140A1 (fr) * 2017-03-08 2018-09-12 Miele & Cie. KG Lave-vaisselle, en particulier lave-vaisselle électroménager
WO2018215331A1 (fr) * 2017-05-23 2018-11-29 Miele & Cie. Kg Lave-vaisselle, en particulier lave-vaisselle ménager
WO2018215343A1 (fr) * 2017-05-23 2018-11-29 Miele & Cie. Kg Appareil de nettoyage et procédé pour faire fonctionner un appareil de nettoyage
CN110662474A (zh) * 2017-05-23 2020-01-07 美诺两合公司 清洗装置和用于操作清洗装置的方法
CN110678113A (zh) * 2017-05-23 2020-01-10 美诺两合公司 洗碗碟机，特别是家用洗碗碟机
US12004699B2 (en) 2017-05-23 2024-06-11 Miele & Cie. Kg Cleaning device and method for operating a cleaning device

Also Published As

Publication number Publication date
DE502007002839D1 (de) 2010-04-01
EP1864603A3 (fr) 2007-12-26
EP1864603B1 (fr) 2010-02-17

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