EP0795720B1 - Household electrical appliance for steam generation - Google Patents

Household electrical appliance for steam generation Download PDF

Info

Publication number
EP0795720B1
EP0795720B1 EP97104150A EP97104150A EP0795720B1 EP 0795720 B1 EP0795720 B1 EP 0795720B1 EP 97104150 A EP97104150 A EP 97104150A EP 97104150 A EP97104150 A EP 97104150A EP 0795720 B1 EP0795720 B1 EP 0795720B1
Authority
EP
European Patent Office
Prior art keywords
water
boiler
appliance
pump
steam generation
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.)
Expired - Lifetime
Application number
EP97104150A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0795720A1 (en
Inventor
Giuseppe Giannelli
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.)
Imetec SpA
Original Assignee
Imetec SpA
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 Imetec SpA filed Critical Imetec SpA
Publication of EP0795720A1 publication Critical patent/EP0795720A1/en
Application granted granted Critical
Publication of EP0795720B1 publication Critical patent/EP0795720B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
    • F22B1/284—Methods of steam generation characterised by form of heating method in boilers heated electrically with water in reservoirs
    • F22B1/285—Methods of steam generation characterised by form of heating method in boilers heated electrically with water in reservoirs the water being fed by a pump to the reservoirs

Definitions

  • This invention relates to a household electrical appliance for steam generation with automatic water feed controlled electronically by a temperature sensor positioned on the resistance heating element.
  • Household electrical appliances are known using steam generation equipment, such as appliances for ironing, or for cleaning floors, windows etc.
  • steam generation equipment for domestic use mainly comprises a boiler consisting of a sealed vessel in which an electrical resistance element is located.
  • the boiler has an aperture, closed by a cap, through which water is fed into the vessel.
  • the electrical resistance element evaporates the water in the vessel until a predetermined boiler pressure is reached.
  • the steam formed in the vessel is withdrawn from it via a solenoid valve operated by an external command, and reaches the user device via a hose.
  • This user device could be a flat-iron provided with an ironing plate comprising holes through which the steam emerges, or could be a lance, from the end of which the steam leaves for cleaning floors, windows, etc.
  • the said type of steam generator has a negative aspect in the lack of practicality of the fact of having to manually pour the water into the boiler.
  • the hot cap of the vessel-boiler must be carefully unscrewed, then after the scalding steam which emerges has died down, the vessel is filled with water.
  • An object of the present invention is to provide a household electrical appliance for steam generation which allows water to be rapidly fed into the boiler without danger to the operator.
  • a further object is to implement said water feed in a gradual manner which prevents thermal shock to the boiler.
  • a household electrical appliance for steam generation comprising a boiler into which the water required for steam generation is automatically fed by a micro-pump dipping into a water-containing vessel arranged in U-shape about the boiler, in which manner a resistance heating element can operate on a small water mass and hence achieve particularly fast operation of the appliance, even with the use of low electrical power.
  • a boiler 19 is housed within a U-shaped vessel 13 provided with a base 17 extending to also accommodate the plan outline of the boiler.
  • Said boiler is provided with a lower hole 12 acting as a seat for fixing to a micro-pump 21. In the opposite position the boiler is provided with another similar lower hole 14 acting as a seat for fixing to a solenoid valve 31.
  • the partial section of Figure 3 also shows the particular location of the temperature sensor 10 on top of the typical round structure of the electrical resistance element 15. Said location senses excessive temperature attained by the resistance element 15 when uncovered by reduction in water level, consequent on steam consumption.
  • the electric cables 30 of the temperature sensor 10 emerge via a usual gasket 29.
  • the electric pump 21 dips into a suitable sump 16, its relationship with the base 17 being shown in Figure 4.
  • a cover 26 which enables the intake region to be inspected following its removal, this being achieved by unscrewing a screw 27 which clamps a gasket 37 to seal the sump.
  • the sump 16 communicates with the vessel 13.
  • a discharge chamber 25 for the electric pump 21, provided between the cover 20 and an edge of the boiler 19. From Figure 4, which illustrates this, it can therefore be seen how the pump 21 transfers water from the vessel 13 to the boiler 19.
  • FIG. 5 shows the holes 36 in the cover 20, through which the bolts pass for closing the boiler.
  • Figure 6 is a bottom view of the boiler, showing a hole 33 housing the top of the electric pump 21, a hole 34 housing the top of the solenoid valve 31, and holes 18 in the boiler body which match the holes 36 in the cover 20 to allow the required clamping between the parts by usual bolts.
  • Figure 7 is a rear view of the boiler 19.
  • FIG 9 which is a side view of the boiler 19, shows the region 33 accommodating the electric pump 21, and the terminal part of the electrical resistance element 15.
  • Figure 10 shows an extremely economical, high precision electronic circuit.
  • the reference numeral 10 indicates the sensor positioned on the top of the resistance element ; 41 indicates the electrical change-over switch of the water level measurement circuit and is inserted in the vessel 13; 42 is a trimmer for presetting the circuit; 44 is an operational circuit for controlling the temperature of the electrical resistance element 15 with the aid of the sensor 10; 45 is an operational circuit for controlling the water level 22 with the aid of the sensor 10 positioned on the top of the electrical resistance element 15; 15 is said electrical resistance element for the boiler 19; and 21 is the electric pump.
  • the sensor is of the variable electrical resistance NTC type, and performs two functions: the first is to control the water temperature in the boiler, and the second to control the water level in the boiler. This water level control is indirect.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices For Medical Bathing And Washing (AREA)
  • Cookers (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)
  • Air Humidification (AREA)
  • Irons (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
EP97104150A 1996-03-13 1997-03-12 Household electrical appliance for steam generation Expired - Lifetime EP0795720B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1996CO000009U IT242274Y1 (it) 1996-03-13 1996-03-13 Apparecchio per la generazione di vapore con alimentazioneautomatica dell'acqua con controllo elettronico
ITCO960009U 1996-03-13

Publications (2)

Publication Number Publication Date
EP0795720A1 EP0795720A1 (en) 1997-09-17
EP0795720B1 true EP0795720B1 (en) 2001-02-14

Family

ID=11347901

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97104150A Expired - Lifetime EP0795720B1 (en) 1996-03-13 1997-03-12 Household electrical appliance for steam generation

Country Status (7)

Country Link
EP (1) EP0795720B1 (es)
AT (1) ATE199179T1 (es)
DE (1) DE69704063T2 (es)
ES (1) ES2156314T3 (es)
GR (1) GR3035732T3 (es)
IT (1) IT242274Y1 (es)
PT (1) PT795720E (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1297843B1 (it) * 1997-05-06 1999-12-20 Imetec Spa Generatore elettrodomestico di vapore a livello acqua di caldaia stabilizzato, particolarmente per ferri da stiro.
AU2000238354A1 (en) * 2000-03-30 2001-10-15 Imetec S.P.A. Household steam generator apparatus
US20030142965A1 (en) * 2002-01-29 2003-07-31 Kable Enterprises Co., Ltd. Steam-cleaning appliance
EP1555480A1 (en) * 2003-12-31 2005-07-20 Electrodomesticos Taurus S.L. Pressurized steam generator
EP2287390A1 (en) * 2009-08-18 2011-02-23 BSH Bosch und Siemens Hausgeräte GmbH Method of operating a steam generator of a laundry appliance, and laundry appliance for performing the method
CN103307687B (zh) * 2013-07-09 2016-08-17 温州大学 基于倾斜u型轨道的电加热式加湿方法及电加热式加湿器
CN112921615B (zh) * 2021-01-23 2023-02-03 浙江蓝蒂服饰股份有限公司 一种蒸汽熨烫机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2880300A (en) * 1953-02-06 1959-03-31 Reimers Electric Appliance Co Electrically-heated steam generators
DD241941B1 (de) * 1985-10-21 1989-04-26 Berlin Oberbekleidung Sicherheitsvorrichtung fuer einen transportablen kleindampferzeuger
DE3720583A1 (de) * 1987-06-22 1989-01-05 Riba Guenther Dampferzeuger mit abschlaemmvorrichtung
KR950007014B1 (ko) * 1987-10-09 1995-06-26 떼르모제따 엘레뜨로도메스띠씨 에스.피.에이 소형 가전 제품에 이용되는 압력 자동조절 증기 발생기
DE4304532A1 (de) * 1993-02-16 1994-08-18 Planeta Hausgeraete Verfahren und Vorrichtung zum Steuern der Wasserzufuhr zu einem Dampferzeuger
EP0638767A1 (en) * 1993-05-20 1995-02-15 Satiber, S.L. Improvement of steam generators for household use

Also Published As

Publication number Publication date
EP0795720A1 (en) 1997-09-17
DE69704063D1 (de) 2001-03-22
ITCO960009V0 (it) 1996-03-13
ITCO960009U1 (it) 1997-09-13
IT242274Y1 (it) 2001-06-04
PT795720E (pt) 2001-06-29
ES2156314T3 (es) 2001-06-16
DE69704063T2 (de) 2001-06-13
ATE199179T1 (de) 2001-02-15
GR3035732T3 (en) 2001-07-31

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