EP1098138A1 - Vorrichtung zur Regelung eines Erzeugers von heissen Fluid in flüssigem oder gasförmigem Zustand - Google Patents

Vorrichtung zur Regelung eines Erzeugers von heissen Fluid in flüssigem oder gasförmigem Zustand Download PDF

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Publication number
EP1098138A1
EP1098138A1 EP99121859A EP99121859A EP1098138A1 EP 1098138 A1 EP1098138 A1 EP 1098138A1 EP 99121859 A EP99121859 A EP 99121859A EP 99121859 A EP99121859 A EP 99121859A EP 1098138 A1 EP1098138 A1 EP 1098138A1
Authority
EP
European Patent Office
Prior art keywords
tank
generator
float
fact
electronic control
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Withdrawn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
EP99121859A
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English (en)
French (fr)
Inventor
Eric Bochud
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.)
Ecovap SA
Original Assignee
Ecovap SA
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 Ecovap SA filed Critical Ecovap SA
Priority to EP99121859A priority Critical patent/EP1098138A1/de
Priority to JP2000337399A priority patent/JP2001173902A/ja
Priority to US09/705,879 priority patent/US6380522B1/en
Publication of EP1098138A1 publication Critical patent/EP1098138A1/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F75/00—Hand irons
    • D06F75/08—Hand irons internally heated by electricity
    • D06F75/10—Hand irons internally heated by electricity with means for supplying steam to the article being ironed
    • D06F75/12—Hand irons internally heated by electricity with means for supplying steam to the article being ironed the steam being produced from water supplied to the iron from an external source
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/78—Adaptations or mounting of level indicators

Definitions

  • the present invention relates to hot fluid generators, under liquid or gaseous form and more particularly to a device for regulating these generators.
  • these are hot water or steam generators, but the invention also applies to generators of other liquids or gases hot.
  • existing generators are generally regulated in pressure, i.e. the supply of the tank heating element (s) are controlled by a pressure sensor.
  • the thermal inertia of these tanks is not negligible, so that after reaching the desired pressure in the tank and therefore cut off the power to the heaters the temperature of the liquid in the tank continues to increase and therefore the pressure too, causing uncontrolled overshoot of the set pressure in the tank.
  • Another object of the present invention is to provide a new method and a regulating device avoiding as much as possible these pressure overruns set point in the generator tank.
  • a final object of the present invention is to facilitate maintenance hot water and hot gas generators by providing them with devices allowing access to the state of the generator components without first disassemble the device.
  • the subject of the present invention is a device for regulating a generator of hot fluid in liquid or gaseous state which obviates the disadvantages existing systems and which allows all or part of the stated goals to be achieved previously.
  • This regulation device is distinguished by the characteristics set out in claim 1.
  • the attached drawing schematically illustrates two embodiments of the device for regulating a generator of hot, liquid or gaseous fluid, depending on the present invention.
  • Figure 1 is a diagram illustrating the first embodiment of the regulating device.
  • Figure 2 is a partial longitudinal sectional view of a level of the liquid in the generator tank.
  • FIG. 3 is a diagram illustrating the second embodiment of the regulating device.
  • Figure 4 is a diagram illustrating for aluminum tanks and aluminum hooped on a stainless steel barrel the pressure curves as a function of time for regulation by pressure switch and temperature regulation according to the invention.
  • the first embodiment of the device for regulating a generator of hot fluid, in the liquid or gaseous state is illustrated diagrammatically in the figure. 1.
  • the installation described with reference to the drawing relates to a steam generator supplying at will an iron or another accessory such as a steam cleaning device.
  • This installation includes a steam generator 1 for example, constituted like that described in document WO / 98/36215 but which can also have an aluminum tank only.
  • the installation also comprises a water tank 2, a pump 3 supplying the generator tank 1 in cold water, and an accessory for use 4, here an iron iron.
  • Pump 3 is supplied with cold water from water tank 2 and its outlet feeds the tank 1 of the steam generator. Between pump 3 and tank 1 is finds a water supply pressure relief valve 5 as well as a valve water depression 6.
  • a pressure switch 7 is located on the steam evacuation pipe 8 which includes a steam outlet solenoid valve 9 which supplies the iron 4 and which is manually controlled by the user using a switch 10 included in the iron 4.
  • the installation also includes an electronic control unit 11.
  • This electronic control unit 11 regulates the water supply to the tank 1 by the pump 3 depending on the water level detected in the tank by a sensor level 12.
  • the tank 1 comprises a heating body 13 whose electrical supply is controlled by the pressure switch 7, a safety thermostat 14 limits the maximum tank temperature 1.
  • cold water must be introduced into the tank 1 preferably in its part occupied by the gas and not by the liquid and especially it is necessary that this contribution of cold water is done by small successive quantities to avoid thermal shocks and variations in temperature of the liquid in the tank 1.
  • This regulation of the introduction of cold water by pump 3 into the tank is controlled by the control unit 11 according to the information which are provided to it by the level sensor 12.
  • This level sensor must be very sensitive and able to detect variations in the water level in tank 1 of on the order of 1 to 3 mm, preferably 1 to 2 mm.
  • This level sensor is fixed on the cover of the tank 1, approximately in its axis, and extends inside this tank 1. It includes a float formed by an aluminum barrel 15 closed by a cover 16 also in aluminum. This cover has an O-ring seal, in the example illustrated, and the rim 17 of the cover is cold crimped on the opening of the barrel 15 so as to obtain a perfect and lasting seal in condition of required temperature and pressure operation i.e. over 110 ° C and 3 to 6 bar pressure.
  • a cylindrical barrel from 15 to 20 mm in diameter and 40 to 60 mm in length suitable for envisaged applications.
  • the seal between the cover 16 and the barrel 15 is preferably an O-ring seal silicone with a hardness of 45 to 70 shore.
  • the cover 16 forming with the barrel 15 the float, has at its end away from the barrel 15 a blind tubular part 18, the end part of the wall has a bead 19.
  • a flexible transparent silicone tube 20 with a hardness of the order of 45 to 70 shore and able to withstand a service temperature between - 60 to + 200 ° C.
  • a stainless steel clamp 21 fixes this tube 20 to the tubular part 18 of the cover in leaktight manner.
  • the other end of the tube 20 is fitted onto the tubular part 22 of a end piece 24 and is clamped there by a second stainless steel flange 23.
  • This end piece 24 has a through passage, its free end is provided with a six pan 25 and its middle part 26 is provided with a thread intended to be screwed into a tapped hole in the cover of the generator tank.
  • a seal 28 seals.
  • the level sensor is arranged inside the tank, approximately along the longitudinal axis thereof, and is connected to the cover of the generator tank by a flexible tube 20.
  • An angular switch for example a mercury switch M is housed and fixed in the tubular part 18 of the float cover 15,17 and its wires conductors extend through the tube 20 and the end piece 24 to exit the tank 1 and be connected to the electronic control unit 11.
  • Such a level sensor is very precise, it makes it possible to detect level differences in the tank of the order of 1 to 3 mm, it is very reliable and very long, particularly due to the high lift of the float. Moreover, this sensor can be removed from the generator tank 1 simply by unscrewing the end piece 24, without the cover of the tank 1 having to be removed. So in if necessary a standard exchange of the sensor is easily carried out.
  • the regulation of the water level at the interior of the tank 1 is done by successive cold liquid introductions of small quantity avoiding any interference or temperature variation in the tank, the volume of liquid introduced being small compared to the volume of liquid contained in the tank.
  • the introduction of cold water into the tank is done in the part of it containing vapor or gas, which also reduces disturbance caused by calcium carbonate.
  • the regulation device object of the invention also allows management automatic electrical heating power delivered to the heater 13 of tank 1 depending on the accessory used, for example iron or steam cleaning device.
  • the accessory 10 is, when it is connected to the generator, connected to the electronic control unit 11 by an electrical conduit 27 delivering to this unit identification information for accessory 10.
  • This information identification automatically control the electrical power delivered to tank heating body.
  • the electronic control unit therefore comprises a management module 28 the introduction of water into the generator tank controlled by the level, as well as a module 29 for managing the power delivered to the corps of tank heating controlled by the accessory coupled to the generator.
  • the electronic control unit also includes a test module 30 comprising at least one counter totaling the running time of the generator. It is thus possible to obtain information at any time intended for the user or which may be useful for maintenance. Thanks to this running time counter it is possible to communicate to the user or to the maintenance service that it is time to carry out maintenance on the generator, for example its descaling, to maintain its efficiency and reliability at maximum level.
  • the test module may include circuits delivering information on the status of the main components of the generator, such as heater, float, water level alarm, pump, etc.
  • the service can immediately know the condition of the generator components and easily and quickly detect a fault.
  • the electronic control unit obviously includes a module supply of electrical energy 31.
  • the present invention in its second embodiment relates to a regulation by slaving of the temperature of the generator tank which allows, as seen in Figure 4, curves c and d, to reduce the overshoot pressure at around 0.3 bar for aluminum tanks and 0.4 bar for mixed aluminum and stainless steel tanks.
  • FIG. 3 Such a device for regulating by controlling the temperature of the tank is illustrated in FIG. 3.
  • the generator comprises a tank 1, a water tank 2, a pump 3 and an accessory, iron 4 or cleaning nozzle 4a.
  • Tank 1 is equipped with a level sensor 12 as described above with reference in Figure 2.
  • This generator comprises in this embodiment two heating bodies 13 and 13a.
  • the electronic control unit comprises in this embodiment a display block 32, a power block 33 and a logic board 34.
  • the logic card 34 includes a module for managing the introduction of water into the tank controlled by the float 12 and a water level detector in the water tank, as well as a water management module the power delivered to the heating bodies controlled by the accessory coupled to the generator.
  • This logic board 34 also includes a test module which can be connected to a test bench shown here by an interface and a PC 35.
  • the logic board 34 of the electronic unit of control also includes a body supply regulation module heating 13,13a.
  • This module is controlled by a thermistor 36 which measures the temperature variations of the tank 1.
  • This module for regulating the heater establishes a sampling of the temperature measurement to determine the slope of the temperature curve as a function of time. This image is necessary to regulate the tank.
  • the temperature control is obtained by through a PID regulator (proportional, integrator, and differentiator) which integrates the optimal system parameters and considers the state of the outlet valve of the fluid.
  • PID regulator proportional, integrator, and differentiator
  • this tank in order to be able to regulate the level of water in the tank and the supply of the heating bodies from measurements temperature measured on the tank, this tank must maintain a orientation given throughout the life of the generator. To avoid any malfunction of the electronic control unit or the electronic card still has a trim detector that puts the generator in safety if the tank does not occupy its preset operating position.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Textile Engineering (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Control Of Non-Electrical Variables (AREA)
EP99121859A 1999-11-04 1999-11-04 Vorrichtung zur Regelung eines Erzeugers von heissen Fluid in flüssigem oder gasförmigem Zustand Withdrawn EP1098138A1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP99121859A EP1098138A1 (de) 1999-11-04 1999-11-04 Vorrichtung zur Regelung eines Erzeugers von heissen Fluid in flüssigem oder gasförmigem Zustand
JP2000337399A JP2001173902A (ja) 1999-11-04 2000-11-06 液体または気体状態の高温流体発生器の調節装置
US09/705,879 US6380522B1 (en) 1999-11-04 2000-11-06 Device for the regulation of a generator of a hot fluid in liquid or gaseous phase

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99121859A EP1098138A1 (de) 1999-11-04 1999-11-04 Vorrichtung zur Regelung eines Erzeugers von heissen Fluid in flüssigem oder gasförmigem Zustand

Publications (1)

Publication Number Publication Date
EP1098138A1 true EP1098138A1 (de) 2001-05-09

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EP99121859A Withdrawn EP1098138A1 (de) 1999-11-04 1999-11-04 Vorrichtung zur Regelung eines Erzeugers von heissen Fluid in flüssigem oder gasförmigem Zustand

Country Status (3)

Country Link
US (1) US6380522B1 (de)
EP (1) EP1098138A1 (de)
JP (1) JP2001173902A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005003627A1 (en) * 2003-07-07 2005-01-13 Polti S.P.A. Equipment for steam generation for household appliance

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3826072B2 (ja) * 2002-06-03 2006-09-27 アドバンスド エナジー ジャパン株式会社 液体材料気化供給装置
CN1245230C (zh) * 2003-01-06 2006-03-15 姚林林 一种液体制取方法和装置
EP1553342A1 (de) * 2003-12-31 2005-07-13 Electrodomesticos Taurus S.L. Druckaufgeladener Dampferzeuger
US7219984B2 (en) * 2004-12-03 2007-05-22 Minh Phuc Tran Consumed ink cartridge refilling process
ITGE20050005A1 (it) * 2005-01-21 2006-07-22 Ariete Spa Dispositivo di dosaggio di liquido anticalcare per apparecchi elettrodomestici a vapore.
GB2575973B (en) * 2018-07-27 2021-03-03 Aspen Pumps Ltd Condensate pump assembly
KR20210073939A (ko) * 2019-12-11 2021-06-21 삼성전자주식회사 의류관리장치 및 그 제어방법

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3291934A (en) * 1964-11-02 1966-12-13 Hugh H Mealy Level indicating switch
DE1974697U (de) * 1967-06-13 1967-12-14 Walter Schweitzer Schwimmerbetaetigter schalter, insbesondere fuer unter druck stehende fluessigkeitsbehaelter.
DE4017789A1 (de) * 1989-06-02 1990-12-06 G C Dental Ind Corp Dentalwascheinheit
EP0478508A1 (de) * 1990-09-28 1992-04-01 Società Anonima COSTRUZIONI TECNICHE SAMMARINESI -C.T.S. Dampferzeuger für Verwendung im Haushalt
EP0703407A1 (de) * 1994-09-26 1996-03-27 Etairoi Holding S.A. Dampferzeuger für Haushaltszwecke, insbesondere für Reinigungsaufgaben
DE19505342C1 (de) * 1995-02-17 1996-04-18 Kaercher Gmbh & Co Alfred Kombiniertes Dampfreinigungs- und Dampfbügelgerät

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2661239B1 (fr) * 1990-04-18 1992-07-24 Ponant Ind Generateur de vapeur pour un humidificateur d'un systeme de conditionnement d'air.
US5249551A (en) * 1991-04-09 1993-10-05 Kirkpatrick William J Steam generation system mass and feedwater control system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3291934A (en) * 1964-11-02 1966-12-13 Hugh H Mealy Level indicating switch
DE1974697U (de) * 1967-06-13 1967-12-14 Walter Schweitzer Schwimmerbetaetigter schalter, insbesondere fuer unter druck stehende fluessigkeitsbehaelter.
DE4017789A1 (de) * 1989-06-02 1990-12-06 G C Dental Ind Corp Dentalwascheinheit
EP0478508A1 (de) * 1990-09-28 1992-04-01 Società Anonima COSTRUZIONI TECNICHE SAMMARINESI -C.T.S. Dampferzeuger für Verwendung im Haushalt
EP0703407A1 (de) * 1994-09-26 1996-03-27 Etairoi Holding S.A. Dampferzeuger für Haushaltszwecke, insbesondere für Reinigungsaufgaben
DE19505342C1 (de) * 1995-02-17 1996-04-18 Kaercher Gmbh & Co Alfred Kombiniertes Dampfreinigungs- und Dampfbügelgerät

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005003627A1 (en) * 2003-07-07 2005-01-13 Polti S.P.A. Equipment for steam generation for household appliance

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Publication number Publication date
JP2001173902A (ja) 2001-06-29
US6380522B1 (en) 2002-04-30

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