EP0299343A1 - Heizelement für elektrische Haushaltsgeräte - Google Patents

Heizelement für elektrische Haushaltsgeräte Download PDF

Info

Publication number
EP0299343A1
EP0299343A1 EP88110764A EP88110764A EP0299343A1 EP 0299343 A1 EP0299343 A1 EP 0299343A1 EP 88110764 A EP88110764 A EP 88110764A EP 88110764 A EP88110764 A EP 88110764A EP 0299343 A1 EP0299343 A1 EP 0299343A1
Authority
EP
European Patent Office
Prior art keywords
water
protective material
heating element
household electrical
die
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Withdrawn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
EP88110764A
Other languages
English (en)
French (fr)
Inventor
Sandro Marcer
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.)
IRCA SpA Industria Resistenze Corazzate e Affini
Original Assignee
IRCA SpA Industria Resistenze Corazzate e Affini
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 IRCA SpA Industria Resistenze Corazzate e Affini filed Critical IRCA SpA Industria Resistenze Corazzate e Affini
Publication of EP0299343A1 publication Critical patent/EP0299343A1/de
Withdrawn legal-status Critical Current

Links

Images

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
    • A47L15/4285—Water-heater arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
    • F24H1/142—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using electric energy supply

Definitions

  • This invention relates to a heating element for household electrical appliances.
  • a further drawback of known methods is the need in such household electrical appliances to use safety and operational thermostats which have necessarily to be installed in the bottom of the appliance and inevitably require this to be drilled.
  • Another drawback is that if the minimum water quantity to be heated, and already representing energy wastage, corresponds to that required for operating the household electrical appliance at full load, it is certainly excessive for reduced loads, at which it also represents excessive detergent and electricity consumption.
  • Aim of the invention if to carry out the heating of the water in household electrical appliances eliminating all the above mentioned drawbacks and particularly reducing at the least the quantity of water to be heated, thus considerably reducing the forming of calcareous incrustations on the surface of the resistance and however making easier their removal.
  • a further aim of the invention is to realize a heating element for water which can be used also for generating steam in the household appliances which require it.
  • a heating element for connecting into the wash circuit of a household electrical appliance characterised by consisting substantially of a die-cast aluminium alloy tubular-shaped body, inside which the water to be heated passes, said body being coupled to an armoured resistance element and being internally treated with a protective material layer.
  • the element according to the invention consists essentially of die-cast aluminium alloy tube 1 in which an armoured resistance element 2 disposed in a coil arrangement is embedded.
  • the inner surface of the tube 1 is covered with a protective material layer 1′.
  • This layer can consist of nickel or chromium, applied with an electrochemical process, or of silicon varnish or teflon. In this case the material has also the function of reducing the lime deposit on the inner surface.
  • a safety thermostat 3 which is electrically connected into the power supply circuit of the resistance element 2.
  • thermostats 4 and 5 can also be embedded in the die-cast body 2, as clarified hereinafter.
  • the described heating element is connected into the spray circuit of a househood electrical appliance such as a dishwasher.
  • a househood electrical appliance such as a dishwasher.
  • it is connected, in series with a pump 7, to the feeding duct of the upper rotary sprinkler 8 provided in the dishwasher wash compartment.
  • a valve 9 is opened to allow water feed from the outside. After filling, the valve 9 is closed and the pump 7 and resistance element 2 of the device 6 are powered. As the water circulated by the pump 7 passes through the tube 1, it is gradually heated and emerges from the upper rotary sprinkler 8 at a temperature which increases until the predetermined temperature for the particular chosen wash cycle is reached.
  • the water can be circulated either alone or together with detergent fed simultaneously with it or separately.
  • the operational thermostat 4 or 5 When the water has reached the predetermined temperature, the operational thermostat 4 or 5, depending on the chosen wash cycle, interrupts power supply to the resistance element 2 until heating is again required. If water should lack for any reason, the rapid temperature increase of the body 1 triggers the safety thermostat, which interrupts the operation of the household appliance itself.
  • the heating element according to the invention has numerous advantages over conventional heating elements, and in particular, compared with a resistance element immersed in the water lying in the bottom of the appliance: - it reduces the quantity of water to be heated, the quantity of electrical energy required for its heating, and the quantity of detergent.
  • a heating element in the form of a tube with a brazed resistance element and wound capillary - it reduces the deposit of calcareous incrustations and easily allows their removal, - it does not require the use of capillary thermostats, which are costly to assemble and delicate to use;
  • a heating element in the form of a container housing a resistance element and traversed by the water to be heated - it is of much simpler and cheaper construction , and - it does not result in the formation of any incrustation around the resistance element, consequently ensuring long life.
  • the heating element is connected to the feeding steam circuit of a steam oven.
  • a vessel 13 for water is provided which feeds at constant level a basin 14 communicating with one end of the element 6 horizontally placed.
  • the other end of the element 6 communicates through a duct 15 with the inside of the muffle 12.
  • the level of the water, equal in the basin 14 and in the element 6, is lower than the highest level which can be reached inside the same element 6.
  • the electrical resistance 2 embedded in the alluminium alloy tube 1 heats the water contained inside the same tube 1, partly changing it into steam, which passes through the duct 15 and enters the muffle 12 to carry out the steam cooking.
  • the protective inner layer 1′ of the tube 1 reduces the lime deposit on the inner surface of the same tube and in any case makes easier its removal.
  • the heating element is connected to the steam generating circuit of a coffee-machine.
  • the main advantages of this embodiment essentially consist in the lower consumption of energy, due to the generation of steam in a quantity corresponding to the required one, as well as in the greater cleaning, due to the smaller lime deposits and to the greater easy of removing them.
  • the armoured resistance 2 is externally surrounding and brazed to the tubular-shaped body 1.
  • This embodiment present, apart from the above described advantages, the further ones and in particular: - a simple construction since the alluminium alloy tubular-­shaped body can be obtained through an extrusion process and of the desired length according to the user's requirements, - the possibility to use armoured resistance covered with alluminium sheat, which has a better thermal conductivity with respect to the stell sheat, even allowing to carry out a good brazing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
EP88110764A 1987-07-07 1988-07-06 Heizelement für elektrische Haushaltsgeräte Withdrawn EP0299343A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8784138A IT8784138A0 (it) 1987-07-07 1987-07-07 Elemento scaldante per apparecchi elettrodomestici.
IT8413887 1987-07-07

Publications (1)

Publication Number Publication Date
EP0299343A1 true EP0299343A1 (de) 1989-01-18

Family

ID=11324622

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88110764A Withdrawn EP0299343A1 (de) 1987-07-07 1988-07-06 Heizelement für elektrische Haushaltsgeräte

Country Status (2)

Country Link
EP (1) EP0299343A1 (de)
IT (1) IT8784138A0 (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4225614A1 (de) * 1992-08-03 1994-02-17 Bosch Siemens Hausgeraete Geschirrspülmaschine
EP0591774A1 (de) * 1992-09-23 1994-04-13 Miele & Cie. GmbH & Co. Geschirrspülmaschine mit einem Durchlauferhitzer
FR2717670A1 (fr) * 1994-03-25 1995-09-29 Beauchamp Bruno Dispositif de trempage et de rincage pour lave vaisselle.
WO2000011412A1 (de) * 1998-08-17 2000-03-02 Alfred Kärcher GmbH & Co. Reinigungsgerät mit einer sprüheinrichtung
EP1070922A2 (de) * 1999-07-21 2001-01-24 Bleckmann GmbH Heizvorrichtung mit Laugentemperaturregelung
WO2003055373A1 (de) * 2001-12-28 2003-07-10 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine zur aufnahme von in einem spülbehälter angeordnetem reinigungsgut
WO2006129928A3 (en) * 2005-05-31 2007-02-15 Lg Electronics Inc Dish washer and steam providing unit for the same
US7565822B2 (en) 2005-03-16 2009-07-28 Lg Electronics Inc. Washing machine using steam and method for controlling the same
US7600402B2 (en) 2003-11-04 2009-10-13 Lg Electronics Inc. Washing apparatus and control method thereof
US9072421B2 (en) * 2005-09-05 2015-07-07 Lg Electronics Inc. Dishwasher
CN110736092A (zh) * 2019-10-09 2020-01-31 冯建兵 一种用于高温蒸汽灭菌设备的即热型蒸汽发生器
US11933520B2 (en) * 2015-09-09 2024-03-19 Marelli Cabin Comfort Japan Corporation Fluid-heating device and manufacturing method thereof

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB285034A (en) * 1927-02-09 1928-09-06 British Thomson Houston Co Ltd Improvements in and relating to electric heaters
FR1491609A (fr) * 1966-07-27 1967-08-11 Omre Constr Elettro Perfectionnements apportés aux machines pour la préparation du café express
DE7041876U (de) * 1970-11-12 1971-03-04 Ceru-Elektroges Czepek & Co Elektrische Heizpatrone fur Kaffee maschinen
DE7124870U (de) * 1971-06-29 1971-09-30 Krups R Gerät zum Bereiten von Brühgetränken wie Kaffee, Tee od. dgl
DE7132664U (de) * 1971-08-26 1972-02-17 Elpag Ag Heizvorrichtung
DE8529085U1 (de) * 1985-10-12 1985-11-28 Türk & Hillinger GmbH, 7200 Tuttlingen Elektrischer Durchlauferhitzer
DE8601293U1 (de) * 1986-01-20 1986-02-27 Siemens AG, 1000 Berlin und 8000 München Elektrischer Durchlauferhitzer
EP0185874A1 (de) * 1984-12-18 1986-07-02 Elpag Ag Chur Durchlauferhitzer
EP0202586A2 (de) * 1985-05-23 1986-11-26 E.G.O. Elektro-Geräte Blanc u. Fischer Beheizung für Waschlösungen in Reinigungsmaschinen

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB285034A (en) * 1927-02-09 1928-09-06 British Thomson Houston Co Ltd Improvements in and relating to electric heaters
FR1491609A (fr) * 1966-07-27 1967-08-11 Omre Constr Elettro Perfectionnements apportés aux machines pour la préparation du café express
DE7041876U (de) * 1970-11-12 1971-03-04 Ceru-Elektroges Czepek & Co Elektrische Heizpatrone fur Kaffee maschinen
DE7124870U (de) * 1971-06-29 1971-09-30 Krups R Gerät zum Bereiten von Brühgetränken wie Kaffee, Tee od. dgl
DE7132664U (de) * 1971-08-26 1972-02-17 Elpag Ag Heizvorrichtung
EP0185874A1 (de) * 1984-12-18 1986-07-02 Elpag Ag Chur Durchlauferhitzer
EP0202586A2 (de) * 1985-05-23 1986-11-26 E.G.O. Elektro-Geräte Blanc u. Fischer Beheizung für Waschlösungen in Reinigungsmaschinen
DE8529085U1 (de) * 1985-10-12 1985-11-28 Türk & Hillinger GmbH, 7200 Tuttlingen Elektrischer Durchlauferhitzer
DE8601293U1 (de) * 1986-01-20 1986-02-27 Siemens AG, 1000 Berlin und 8000 München Elektrischer Durchlauferhitzer

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4225614A1 (de) * 1992-08-03 1994-02-17 Bosch Siemens Hausgeraete Geschirrspülmaschine
EP0591774A1 (de) * 1992-09-23 1994-04-13 Miele & Cie. GmbH & Co. Geschirrspülmaschine mit einem Durchlauferhitzer
FR2717670A1 (fr) * 1994-03-25 1995-09-29 Beauchamp Bruno Dispositif de trempage et de rincage pour lave vaisselle.
WO2000011412A1 (de) * 1998-08-17 2000-03-02 Alfred Kärcher GmbH & Co. Reinigungsgerät mit einer sprüheinrichtung
EP1070922A2 (de) * 1999-07-21 2001-01-24 Bleckmann GmbH Heizvorrichtung mit Laugentemperaturregelung
EP1070922A3 (de) * 1999-07-21 2003-05-07 Bleckmann GmbH Heizvorrichtung mit Laugentemperaturregelung
WO2003055373A1 (de) * 2001-12-28 2003-07-10 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine zur aufnahme von in einem spülbehälter angeordnetem reinigungsgut
US6997196B2 (en) 2001-12-28 2006-02-14 Bsh Bosch Und Siemens Hausgeraete Gmbh Dishwasher for receiving articles disposed in a washing receptacle for cleaning
US7600402B2 (en) 2003-11-04 2009-10-13 Lg Electronics Inc. Washing apparatus and control method thereof
US8122741B2 (en) 2003-11-04 2012-02-28 Lg Electronics Inc. Washing apparatus and control method thereof
US7797969B2 (en) 2005-03-16 2010-09-21 Lg Electronics Inc. Washing machine using steam and method for controlling the same
US7647794B2 (en) 2005-03-16 2010-01-19 Lg Electronics Inc. Washing machine using steam and method for controlling the same
US7565822B2 (en) 2005-03-16 2009-07-28 Lg Electronics Inc. Washing machine using steam and method for controlling the same
US7946140B2 (en) 2005-03-16 2011-05-24 Lg Electronics Inc. Washing machine using steam and method for controlling the same
US9416480B2 (en) 2005-03-16 2016-08-16 Lg Electronics Inc. Washing machine using steam and method for controlling the same
WO2006129928A3 (en) * 2005-05-31 2007-02-15 Lg Electronics Inc Dish washer and steam providing unit for the same
US9072421B2 (en) * 2005-09-05 2015-07-07 Lg Electronics Inc. Dishwasher
US11933520B2 (en) * 2015-09-09 2024-03-19 Marelli Cabin Comfort Japan Corporation Fluid-heating device and manufacturing method thereof
CN110736092A (zh) * 2019-10-09 2020-01-31 冯建兵 一种用于高温蒸汽灭菌设备的即热型蒸汽发生器

Also Published As

Publication number Publication date
IT8784138A0 (it) 1987-07-07

Similar Documents

Publication Publication Date Title
EP0299343A1 (de) Heizelement für elektrische Haushaltsgeräte
KR0152145B1 (ko) 전자렌지
EP2987446A1 (de) Geschirrspüler
CN102438487A (zh) 具有顺序欧姆水加热的食物蒸锅容器
GB2309071A (en) Steam generator
US2842144A (en) Dishwashing machine rinsing apparatus
KR20100111669A (ko) 가열 유닛을 갖는 세탁기의 작동 방법
US2784291A (en) Water heating device
US2437571A (en) Steam iron
US6128438A (en) Inflammable cleaning fluid heating apparatus
US20020071665A1 (en) Flow heater
US20070228032A1 (en) Thick-Film Fluid Heater and Continuous Heating Device
CN210673076U (zh) 一种带即热清洗模块的炒菜机
EP1082938A2 (de) Energiespar-Spülmaschine
CN208124604U (zh) 一种多功能恒温电热水器
EP0287772A1 (de) Heizelement für elektrische Haushaltsgeräte
CN104353635B (zh) 油烟机清洗机
CN210277103U (zh) 一种洗碗机电机用加热盘结构
WO2001094861A1 (en) A tubular-shaped heating element
KR200284718Y1 (ko) 물-가열장치
KR200216000Y1 (ko) 빵오븐기용 증기발생기
KR100451244B1 (ko) 전기밥솥
KR0121277Y1 (ko) 가스렌지가 부착된 식기세척기의 세척수 가열장치
EP1532919B1 (de) Geschirrspüler und Verfahren mit einer Vorrichtung zum Heizen der Arbeitsflüssigkeit
CN2378677Y (zh) 电热热水器

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE ES FR GB GR IT LI SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19890719