EP0511525A1 - Vorrichtung zur Erzeugung von Wasserdampf, insbesondere zur Luftbefeuchtung - Google Patents

Vorrichtung zur Erzeugung von Wasserdampf, insbesondere zur Luftbefeuchtung Download PDF

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Publication number
EP0511525A1
EP0511525A1 EP92106030A EP92106030A EP0511525A1 EP 0511525 A1 EP0511525 A1 EP 0511525A1 EP 92106030 A EP92106030 A EP 92106030A EP 92106030 A EP92106030 A EP 92106030A EP 0511525 A1 EP0511525 A1 EP 0511525A1
Authority
EP
European Patent Office
Prior art keywords
chamber
water
heating
constituted
sediment collection
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Withdrawn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
EP92106030A
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English (en)
French (fr)
Inventor
Luigi Ario Rossi
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.)
Carel(Costruzione Armadi Elettrici) Srl
Original Assignee
Carel(Costruzione Armadi Elettrici) Srl
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 Carel(Costruzione Armadi Elettrici) Srl filed Critical Carel(Costruzione Armadi Elettrici) Srl
Publication of EP0511525A1 publication Critical patent/EP0511525A1/de
Withdrawn legal-status Critical Current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

Definitions

  • the present invention relates to a steam producing apparatus, particularly for humidifying air.
  • Immersed-electrode vaporizers are mainly used to vaporize water suitable for humidifying air in air-conditioning systems or in so-called “fan coils” or “split systems”.
  • Said vaporizers are substantially constituted by a vessel which extends vertically and which contains electrodes which are supplied with mains power.
  • the presence of the electrodes inside the vessel is the source of problems which are mainly due to the calcium which clings thereto, causing deposits and corrosions which deteriorate the operation of the evaporator and limit its operating life.
  • the aim of the present invention is to provide an apparatus for producing steam for humidifying air which eliminates or at least reduces the problems described above in the prior art.
  • a consequent primary object is to provide an apparatus whose operation for a same type of liquid is substantially independent of the concentration of salts dissolved therein and is thus independent of the conductivity and aggressiveness thereof.
  • Another important object is to provide a highly efficient apparatus.
  • Not least object is to provide an apparatus which can be marketed at a price which is at least comparable to that of conventional immersed-electrode evaporators.
  • a further object of the invention is that of maximizing the life of the apparatus, and thereby limiting maintenance interventions.
  • a steam producing apparatus which comprises a container for liquid to be vaporized with an upper steam collection manifold, said container being divided into an upper heating and evaporation chamber, in whose walls electric resistors are embedded, and into a lower sediment collection chamber.
  • figure 1 is a schematic longitudinal sectional view of the apparatus according to the invention.
  • the steam producing apparatus comprises a container, generally designated by the reference numeral 1 which extends vertically and is provided, in an upward position, with a manifold 2 for collecting and directing the produced steam.
  • Said container 1 is divided, according to the invention, into an upper heating and evaporation chamber 3, in whose walls electric resistors 4 are embedded, and into a lower sediment collection chamber 5 which has a greater capacity than said upper chamber.
  • said upper chamber 3 is constituted by an axial annular interspace which is obtained from a vertically extending cylinder.
  • Said upper chamber 3 is sealingly connected, in its lower part, to the chamber 5.
  • the liquid which is constituted by water which is designated by the reference numeral 6, completely fills the lower chamber 5 and skims the inner surface of the upper chamber 3.
  • the lower chamber 5 for collecting sediments of crystallized salts which also has a substantially cylindrical extension, is made of a material which withstands the temperature of 100 degrees Celsius and, as already mentioned earlier, is sealingly connected to the upper chamber 3.
  • a water feed pipe 7 and a water discharge pipe 8 are connected in a downward position to said chamber 5; said pipes are respectively part of a respective feed circuit 9 and of a discharge circuit 10.
  • the two pipes 7 and 8 are in any case mutually connected by a union 11 and exit below a filter 12 which protects the inside of the chamber 5.
  • the water feed circuit 9 is constituted by a pipe which defines a siphon 13 by rising higher than the heating chamber 3, and by an electric feed valve 14 with a built-in flow regulator.
  • the water discharge circuit 10 is instead constituted by an electric pump 15 with a pipe which defines a siphon 16 which is lower than the maximum height of the heating chamber 3 and is open.
  • a level sensor is arranged inside the heating chamber 3 and has two steps: a normal operation step and an overflow alarm step.
  • a sensor which detects the operating temperature of the heating chamber 3 is also mounted inside said chamber and is not visible in the figure.
  • An axial shaft 17 is also present inside the heating chamber 3 and radially supports, by means of an arm 17a, a scraper element 18 which scrapes the inner and outer surfaces of said chamber.
  • Said shaft 17 is rigidly associated with the shaft of a motor 19 which rotates it, consequently rotating the element 18, which removes any calcareous deposits present on the surface of the chamber 3.
  • the shaft of the motor 19, the shaft 17 and the chamber 3 are axially hollow, and another shaft 20 is arranged inside them, extends downward to the inside of the lower chamber 5 and is provided, at its end, with a propeller 21.
  • Said shaft 20 is rotated by another motor 22 which consequently rotates the propeller 21 at a low rpm rate.
  • Said propeller 21 acts as sensor suitable for detecting the amount of deposited salts.
  • Said propeller is in fact braked by high salt concentrations.
  • the current absorbed by the motor 22 can thus constitute an alarm signal.
  • the flow of current through the electric resistors 4 heats the cylinder which constitutes the chamber 3 and thus heats the water inside it, with the consequent evaporation of said water.
  • this steam production system has an undeniable advantage, which arises from the fact that its heating element (the resistor) is not in direct contact with the water and that it therefore avoids deposits and corrosion.
  • the mechanical deposit removal system which is operated periodically, eliminates the salts which crystallize on the inner surface of the chamber 3, keeping heat exchange with the water optimum.
  • Another evident advantage is the possibility of working with any kind of water, regardless of its conductivity and thus of its aggressiveness.
  • the water discharge circuit is used to completely empty the water of the heating chamber 3 and of the sediment collection chamber 5 both for automatic periodic maintenance (time-controlled discharge) and for chamber replacement.
  • the discharge circuit also acts as overflow circuit, with the purpose of eliminating the water which might completely fill the heating chamber 3.
  • the overflow circuit has a second safety function if a narrowing occurs in the steam delivery pipe.
  • the discharge circuit is structured so as to avoid explosions, since the overpressure would push the water, making it flow out through the open siphon, until the heating chamber 3 reached atmospheric pressure.
  • the first signal step is used to warn the control unit of the apparatus, which supervises its operation and the alarms, so that water loading is performed.
  • the second step is used to indicate an overflow alarm which makes the control unit discharge water.
  • the temperature sensing performed by the related sensor checks that said temperature does not exceed a limit threshold, in which case the control unit of the apparatus reduces the power of the resistors by a certain percentage, so as to reduce the temperature of the heating chamber 3 and thus reduce the production of steam.
  • a further increase beyond an alarm temperature value causes the control unit to switch the apparatus off completely and to issue an alarm signal.
  • the temperature sensor constitutes a further safety element, since it avoids overheatings and excessive temperatures.
  • the control unit of the apparatus also supervises, by means of the temperature sensor, the preheating of the water when the set relative humidity has been reached, so as to have an immediate production of steam when required.
  • the sensor constituted by the propeller 21 is suitable for issuing an alarm signal if the salts deposited in the chamber 5 have filled said chamber.
  • the materials employed may be any according to the requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Humidification (AREA)
EP92106030A 1991-04-10 1992-04-07 Vorrichtung zur Erzeugung von Wasserdampf, insbesondere zur Luftbefeuchtung Withdrawn EP0511525A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPD910024U 1991-04-10
IT000024 IT224189Z2 (it) 1991-04-10 1991-04-10 Apparecchiatura per la produzione di vapore per l'umidificazione dell'aria

Publications (1)

Publication Number Publication Date
EP0511525A1 true EP0511525A1 (de) 1992-11-04

Family

ID=11389443

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92106030A Withdrawn EP0511525A1 (de) 1991-04-10 1992-04-07 Vorrichtung zur Erzeugung von Wasserdampf, insbesondere zur Luftbefeuchtung

Country Status (2)

Country Link
EP (1) EP0511525A1 (de)
IT (1) IT224189Z2 (de)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5865857A (en) * 1992-11-05 1999-02-02 Zeneca Limited Blue to green disperse dyes for synthetic fiber material
EP1059487A3 (de) * 1999-06-07 2002-03-27 GENERAL TECHNOLOGY S.r.l. Dampfhaushaltsgerät mit von Hand oder automatisch zu betätigender Entkalkungsvorrichtung
EP1437547A2 (de) * 2003-01-09 2004-07-14 Hansgrohe AG Einrichtung zur Erzeugung von Dampf sowie Verfahren zum Reinigen und Verfahren zum Betrieb derselben
WO2006097002A2 (de) * 2005-03-14 2006-09-21 Axair Ag Dampferzeuger mit verwirbelungseinrichtung
WO2008157848A2 (en) * 2007-06-18 2008-12-24 Stanley Clemens Deutschmann Electrode humidifier
US7665332B2 (en) 2006-08-15 2010-02-23 Whirlpool Corporation Steam fabric treatment appliance with exhaust
US7681418B2 (en) 2006-08-15 2010-03-23 Whirlpool Corporation Water supply control for a steam generator of a fabric treatment appliance using a temperature sensor
US7690062B2 (en) 2007-08-31 2010-04-06 Whirlpool Corporation Method for cleaning a steam generator
US7707859B2 (en) 2006-08-15 2010-05-04 Whirlpool Corporation Water supply control for a steam generator of a fabric treatment appliance
US7730568B2 (en) 2006-06-09 2010-06-08 Whirlpool Corporation Removal of scale and sludge in a steam generator of a fabric treatment appliance
US7753009B2 (en) 2006-10-19 2010-07-13 Whirlpool Corporation Washer with bio prevention cycle
US7765628B2 (en) 2006-06-09 2010-08-03 Whirlpool Corporation Steam washing machine operation method having a dual speed spin pre-wash
US7841219B2 (en) 2006-08-15 2010-11-30 Whirlpool Corporation Fabric treating appliance utilizing steam
US7861343B2 (en) 2007-08-31 2011-01-04 Whirlpool Corporation Method for operating a steam generator in a fabric treatment appliance
US7886392B2 (en) 2006-08-15 2011-02-15 Whirlpool Corporation Method of sanitizing a fabric load with steam in a fabric treatment appliance
US7905119B2 (en) 2007-08-31 2011-03-15 Whirlpool Corporation Fabric treatment appliance with steam generator having a variable thermal output
US7918109B2 (en) 2007-08-31 2011-04-05 Whirlpool Corporation Fabric Treatment appliance with steam generator having a variable thermal output
US7941885B2 (en) 2006-06-09 2011-05-17 Whirlpool Corporation Steam washing machine operation method having dry spin pre-wash
US7966683B2 (en) 2007-08-31 2011-06-28 Whirlpool Corporation Method for operating a steam generator in a fabric treatment appliance
US8037565B2 (en) 2007-08-31 2011-10-18 Whirlpool Corporation Method for detecting abnormality in a fabric treatment appliance having a steam generator
US8393183B2 (en) 2007-05-07 2013-03-12 Whirlpool Corporation Fabric treatment appliance control panel and associated steam operations
US8555675B2 (en) 2007-08-31 2013-10-15 Whirlpool Corporation Fabric treatment appliance with steam backflow device
US8555676B2 (en) 2007-08-31 2013-10-15 Whirlpool Corporation Fabric treatment appliance with steam backflow device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3873806A (en) * 1969-06-11 1975-03-25 George W Schossow Vaporizer-humidifier
DE3532261A1 (de) * 1985-09-10 1987-03-19 Riba Guenther Dampferzeuger
EP0323939A1 (de) * 1988-01-08 1989-07-12 SOCIETE COOPERATIVE DE PRODUCTION BOURGEOIS (Société Coopérative de Production Anonyme à Capital Variable) Dampferzeuger für Kochgeräte
FR2645624A1 (fr) * 1989-04-05 1990-10-12 Blanco Jean Luc Generateur de vapeur d'eau, et son application a un appareil pour fondre la cire d'abeille
EP0451066A1 (de) * 1990-04-04 1991-10-09 SOCIETE COOPERATIVE DE PRODUCTION BOURGEOIS (Société Coopérative de Production Anonyme à Capital Variable) Dampferzeuger für Gargeräte mit Entwässerungseinrichtung
EP0383327B1 (de) * 1989-02-17 1993-06-09 LechMetall Landsberg GmbH Edelstahlerzeugnisse Dampferzeuger für Gargeräte mit Entkalkungseinrichtung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3873806A (en) * 1969-06-11 1975-03-25 George W Schossow Vaporizer-humidifier
DE3532261A1 (de) * 1985-09-10 1987-03-19 Riba Guenther Dampferzeuger
EP0323939A1 (de) * 1988-01-08 1989-07-12 SOCIETE COOPERATIVE DE PRODUCTION BOURGEOIS (Société Coopérative de Production Anonyme à Capital Variable) Dampferzeuger für Kochgeräte
EP0383327B1 (de) * 1989-02-17 1993-06-09 LechMetall Landsberg GmbH Edelstahlerzeugnisse Dampferzeuger für Gargeräte mit Entkalkungseinrichtung
FR2645624A1 (fr) * 1989-04-05 1990-10-12 Blanco Jean Luc Generateur de vapeur d'eau, et son application a un appareil pour fondre la cire d'abeille
EP0451066A1 (de) * 1990-04-04 1991-10-09 SOCIETE COOPERATIVE DE PRODUCTION BOURGEOIS (Société Coopérative de Production Anonyme à Capital Variable) Dampferzeuger für Gargeräte mit Entwässerungseinrichtung

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5865857A (en) * 1992-11-05 1999-02-02 Zeneca Limited Blue to green disperse dyes for synthetic fiber material
EP1059487A3 (de) * 1999-06-07 2002-03-27 GENERAL TECHNOLOGY S.r.l. Dampfhaushaltsgerät mit von Hand oder automatisch zu betätigender Entkalkungsvorrichtung
EP1437547A2 (de) * 2003-01-09 2004-07-14 Hansgrohe AG Einrichtung zur Erzeugung von Dampf sowie Verfahren zum Reinigen und Verfahren zum Betrieb derselben
EP1437547A3 (de) * 2003-01-09 2005-05-04 Hansgrohe AG Einrichtung zur Erzeugung von Dampf sowie Verfahren zum Reinigen und Verfahren zum Betrieb derselben
WO2006097002A2 (de) * 2005-03-14 2006-09-21 Axair Ag Dampferzeuger mit verwirbelungseinrichtung
WO2006097002A3 (de) * 2005-03-14 2006-12-14 Axair Ag Dampferzeuger mit verwirbelungseinrichtung
US7730568B2 (en) 2006-06-09 2010-06-08 Whirlpool Corporation Removal of scale and sludge in a steam generator of a fabric treatment appliance
US7941885B2 (en) 2006-06-09 2011-05-17 Whirlpool Corporation Steam washing machine operation method having dry spin pre-wash
US7765628B2 (en) 2006-06-09 2010-08-03 Whirlpool Corporation Steam washing machine operation method having a dual speed spin pre-wash
US7841219B2 (en) 2006-08-15 2010-11-30 Whirlpool Corporation Fabric treating appliance utilizing steam
US7707859B2 (en) 2006-08-15 2010-05-04 Whirlpool Corporation Water supply control for a steam generator of a fabric treatment appliance
US7681418B2 (en) 2006-08-15 2010-03-23 Whirlpool Corporation Water supply control for a steam generator of a fabric treatment appliance using a temperature sensor
US7665332B2 (en) 2006-08-15 2010-02-23 Whirlpool Corporation Steam fabric treatment appliance with exhaust
US7913339B2 (en) 2006-08-15 2011-03-29 Whirlpool Corporation Water supply control for a steam generator of a fabric treatment appliance using a temperature sensor
US7886392B2 (en) 2006-08-15 2011-02-15 Whirlpool Corporation Method of sanitizing a fabric load with steam in a fabric treatment appliance
US7904981B2 (en) 2006-08-15 2011-03-15 Whirlpool Corporation Water supply control for a steam generator of a fabric treatment appliance
US7753009B2 (en) 2006-10-19 2010-07-13 Whirlpool Corporation Washer with bio prevention cycle
US10844533B2 (en) 2007-05-07 2020-11-24 Whirlpool Corporation Method for controlling a household washing machine
US8393183B2 (en) 2007-05-07 2013-03-12 Whirlpool Corporation Fabric treatment appliance control panel and associated steam operations
US11993886B2 (en) 2007-05-07 2024-05-28 Whirlpool Corporation Method for controlling a household washing machine
WO2008157848A3 (en) * 2007-06-18 2009-06-25 Stanley Clemens Deutschmann Electrode humidifier
WO2008157848A2 (en) * 2007-06-18 2008-12-24 Stanley Clemens Deutschmann Electrode humidifier
US7918109B2 (en) 2007-08-31 2011-04-05 Whirlpool Corporation Fabric Treatment appliance with steam generator having a variable thermal output
US7905119B2 (en) 2007-08-31 2011-03-15 Whirlpool Corporation Fabric treatment appliance with steam generator having a variable thermal output
US7966683B2 (en) 2007-08-31 2011-06-28 Whirlpool Corporation Method for operating a steam generator in a fabric treatment appliance
US8037565B2 (en) 2007-08-31 2011-10-18 Whirlpool Corporation Method for detecting abnormality in a fabric treatment appliance having a steam generator
US7861343B2 (en) 2007-08-31 2011-01-04 Whirlpool Corporation Method for operating a steam generator in a fabric treatment appliance
US8555675B2 (en) 2007-08-31 2013-10-15 Whirlpool Corporation Fabric treatment appliance with steam backflow device
US8555676B2 (en) 2007-08-31 2013-10-15 Whirlpool Corporation Fabric treatment appliance with steam backflow device
US7690062B2 (en) 2007-08-31 2010-04-06 Whirlpool Corporation Method for cleaning a steam generator

Also Published As

Publication number Publication date
ITPD910024V0 (it) 1991-04-10
ITPD910024U1 (it) 1992-10-10
IT224189Z2 (it) 1996-02-09

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