EP3799606B1 - Device and method to produce instant steam - Google Patents

Device and method to produce instant steam Download PDF

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Publication number
EP3799606B1
EP3799606B1 EP17734239.1A EP17734239A EP3799606B1 EP 3799606 B1 EP3799606 B1 EP 3799606B1 EP 17734239 A EP17734239 A EP 17734239A EP 3799606 B1 EP3799606 B1 EP 3799606B1
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EP
European Patent Office
Prior art keywords
steam
heating means
temperature
pumping
flow rate
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.)
Active
Application number
EP17734239.1A
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German (de)
English (en)
French (fr)
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EP3799606A1 (en
Inventor
Olivier FERRINI
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.)
Laurastar SA
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Laurastar SA
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Publication date
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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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/40—Steam generating arrangements
    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/408—Means for supplying cleaning or surface treating agents
    • A47L11/4086—Arrangements for steam generation
    • 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
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/60—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to auxiliary conditioning or finishing agents, e.g. filling level of perfume tanks
    • D06F2103/62—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to auxiliary conditioning or finishing agents, e.g. filling level of perfume tanks related to systems for water or steam used for conditioning or finishing
    • 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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/50—Control of washer-dryers characterised by the purpose or target of the control
    • D06F33/52—Control of the operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/65—Control of the operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of conditioning or finishing phases, e.g. for smoothing or removing creases
    • 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
    • F22B1/288—Instantaneous electrical steam generators built-up from heat-exchange elements arranged within a confined chamber having heat-retaining walls

Definitions

  • the invention relates to a novel steam unit, a process to provide steam and applications wherein such a novel steam unit can be used.
  • Document WO 2016/067031 A1 discloses a uni for making instant steam comprising a heating means, a pumping means, a control means, wherein the control means controls the pumping means and the heating means and is capable of modifying the temperature of the heating means when the pressure of the pumping means is modified.
  • Devices for the production of hot steam of the prior art imply as one of their disadvantage that the operator has to wait a long time period until the unit is operational and steam is available for use. Also such devices operate usually in a batch manner requiring additional waiting or boost time after each batch is finished. Another disadvantage is often a preset pressure value and the lack to control and adapt the various process and device parameters. Hence it was one object underlying the invention to provide for a unit or devices that improve or avoid the disadvantages of the prior art. Another object underlying the invention was to provide steam within a relatively short time period from switching on the unit.
  • the disclosure relates to a steam unit which can provide hot steam within a short time period from switching on the unit.
  • the disclosure relates to a process for producing hot steam.
  • the disclosure relates to a unit and process for producing hot steam wherein there is no need for a steam reservoir or a container to store the hot steam before use.
  • the disclosure relates to devices using such a steam unit.
  • Fig. 1 illustrates a unit according to the disclosure wherein a heating means (5) is surrounded by a container (7) (also denoted as water container or water compartment) filled with water (4).
  • Heating means (5) contains or is linked to a means (6) for determining the temperature of the heating element.
  • the arrow (15) indicates the water flow into the container (7) wherein the water inlet is not explicitly shown and wherein the steam outlet (not shown explicitly) is located at the arrow pointing in direction to solenoid valve (8) releasing steam (19).
  • pump (2) and pump rotation sensor (3) connecting water tank (1) and the heating element (5) with water container (7) are depicted.
  • Electronic management element (9) is coordinating and controlling all unit and process parameters by way of (11) control of power of heating element, (12) (13) regulation of the pump and flow rate control and thus the volume and pressure feed into the container (7), (14) control of solenoid.
  • Fig. 2 illustrates the control of a regulated temperature of the heating element and the relationship of the device components (1), (2), (3), (4).
  • the steam unit device used is comprises a water container, a peristaltic pump and a fast element heater.
  • the steam is released through a specific nozzle with an outlet hole of 0.1 - 1.5 mm diameter to speed up the steam.
  • the flow rate of the peristaltic pump is regulated in a way taking into account the fast heating element temperature value in order to maintain a perfect ratio between the flow rate of the peristaltic pump and the temperature value of the fast heating element.
  • Steam unit in the sense of the disclosure is to be understood as a heating element or heating unit or heating means including a water container or water compartment with an inlet for water and an outlet for the steam produced which can be controlled by a control means.
  • “Instant steam” in the sense of the disclosure is to be understood as steam that can be produced on demand within a very short period of time and which does not require a long boost time of the system before being ready to produce steam; moreover "instant steam” as to be understood by this disclosure does not require a reservoir or container wherein the steam is prepared in a limited quantity which restricts the volume of steam to be used or being ready for use. In contrast the "instant steam” will be produced on demand and in a continuous manner in contrast to a batch steam production as described in the prior art.
  • on demand steam is to be understood as steam that can be used directly after its production in a steam unit and wherein the steam production can be continuous wherein water or any other fluid or water including other fluids or additives are entering the steam unit at the water inlet and leave the steam unit by way of the steam outlet.
  • the "pressure” in the sense of the disclosure relates to the pressure produced by the pump or pumping means in the range of about 0.5 to about 10 bar and which can be managed and coordinated with the other unit or process conditions.
  • a "target temperature” in the sense of the disclosure can relate to the temperature of the heating means or the temperature of the steam produced by the steam unit.
  • the target temperature may be in the range of about 100 °C to 550 °C.
  • a “water container” or “water compartment” in the sense of the disclosure refers to the means and volume being connected with, or surrounding the, or forming part of the heating means. It may be in the range of about 2 to 200 ml, or 5 to 20 ml, or 5 to 10 ml.
  • a “heating time” in the sense of the application is the time that is required to bring e.g. a means, a target fluid, like water, a heating means, to its target temperature; it may take less than 20 seconds, or less than 18 seconds, or from 10 to 20 seconds, or from 13 to 18 seconds.
  • the disclosure relates to a unit for making instant steam comprising i. a heating means, ii. a pumping means, iii. a control means, the control means controls the pumping means and the heating means wherein the control means is capable of modifying the temperature of the heating means when the pressure of the pumping means is modified.
  • One advantage of the unit according to the invention is that the steam can be provided very shortly after switching the unit on and the operator does not have to wait a time period as known from steam units according to the state of the art.
  • a steam reservoir is not necessary.
  • a steam reservoir as described in the state of the art which is a container located after the steam producing unit (e.g. the heating element) or which is a container including the steam producing element and which at the same time serves as the steam reservoir.
  • the steam is discharged from this element by way of a valve.
  • One disadvantage of such a steam unit is inter alia that it takes relatively long until the unit is ready to discharge steam.
  • Another disadvantage in addition is the limited volume of steam over time that can be made available for use, i.e. once the steam contained in this reservoir of steam has been used or the water contained in this reservoir has been used, the container has to be refilled and re-heat water and it takes again some time until the unit is ready again to discharge steam.
  • known steam units imply long waiting time when the unit is set to function, or in the process of use.
  • the unit according to the invention can provide steam very shortly after it is switched on. It only requires a very short time period until steam can be discharged and thus advantageously has a minimal waiting time before steam is provided. Moreover, in the cause of use there will be no need to wait again for the availability for steam in case a water tank has to be refilled.
  • the invention is also advantageous because it requires less components or components that are smaller compared to known steam units. Accordingly, the devices can be designed differently and in many cases in smaller dimensions which represents an advantage.
  • the inventive steam unit has advantageously achieved to be capable of generating instant steam without a prolonged waiting time for the personnel using such a device.
  • Such an inventive steam unit also achieves in principle the advantage of maintaining a fixed or regulated, preset or target temperature, of the heating element.
  • One principle concept and aspect of the disclosure comprises at the starting point of process a peristaltic pump is filling water into the container (with e.g. a maximum volume of 10 to 20ml).
  • the fast heating element is regulated until reaching a target temperature of 200°C and the pressure will not exceed 8 bars; these target parameters are met in less than 18 seconds, e.g. 13 to 18 seconds.
  • the system is ready to release steam.
  • the steam is released by a controlled mechanism from the heating/water/steam compartment, and the steam is e.g. released through a specific nozzle with an outlet hole of about 0.1-1.5 mm diameter. This will speed up the steam release speed.
  • the flow rate of the peristaltic pump is regulated taking into account the temperature of the fast heating element in order to maintain a perfect ratio between the flow rate of the peristaltic pump and the value of the temperature of the fast heating element.
  • the heating element is regulated so to reach or maintain a specific target temperature value (e.g. 500 °C).
  • a specific target temperature value e.g. 500 °C.
  • the system is ready to release steam.
  • the system is capable of simultaneously releasing steam by way of a controlled mechanism and the peristaltic pump is filling water into the container with a regulated specific flow rate.
  • the steam release is operated through a specific nozzle with an outlet hole of e.g. 0.1 - 1.5 mm diameter to speed up the steam.
  • the flow rate of the peristaltic pump is regulated in a way taking into account the fast heating element temperature value in order to maintain a perfect ratio between the flow rate of the peristaltic pump and the temperature value of the fast heating element.
  • a unit according to the disclosure can further comprise a water tank, a pumping means rotation sensor, a flow rate measuring means, a temperature measuring means in the heating means, a pressure measuring means, a water container of the heating means, a steam outlet valve, a water inlet and a steam outlet on the heating means, and a steam release nozzle.
  • the advantage of the invention is also that by way of combining a control element (9) with measuring means (3), (6) and by way of (11), (12), (13), (14) it can e.g. maintain a target temperature of the heating element (5) and adapt the other means (2) and (8) as well as water flow rate and pressure while discharging steam through solenoid valve (8).
  • Other parameters can also be kept at a target value and the other features and parameters be controlled to produce instant steam.
  • the control element (9) thus allows for a overall control of various parameters. Any nozzle can be used that is capable to providing the steam to a defined area.
  • the nozzle preferably has a hole of 0.1-1.5mm diameter.
  • the unit can also contain an additional water circuit through the container of the heating means.
  • the unit can further be characterized in that the unit does not have any or an additional steam container.
  • a steam container as used in the prior art contains pre-produced steam ready for use or a container wherein the maximal volume of water is contained and the steam ready for use.
  • a heating means which is a fast heating means, preferably having a container with a volume for water uptake of 10 to 50 ml, preferably 5 to 25 ml, more preferably 10 ml.
  • the heating means can be set to any predefined temperature and it is set to a target temperature wherein the target temperature may vary depending on the application and particular requirement of the steam used.
  • the heating means can be heated to a temperature of 20 °C to 550 °C, preferably to 100 °C to 500 °C.
  • the temperature of the heating means can be increased to the target temperature within 2 to 60 seconds, preferably within 3 to 25 seconds.
  • the heating means used will have a power as usually used for such units, preferably the heating means has 1300 to 2500 W, preferably 1400 to 2000 W.
  • the steam flow rate and/or pressure can be changed during operation of the unit.
  • the steam flow rate and/or pressure will be adapted to the needs and other parameters of the unit as may be required to produce the steam as may be required with regard to temperature, pressure and volume.
  • the inventors have surprisingly found a design of the steam unit allowing the production of instant steam without the need to preheat or a long waiting period until the steam is ready for use.
  • the advantages of the invention can be achieved by an electronic management of the target temperature and temperature of the heating means, the regulation of the pumping volumes and/or the pressure applied by the pumping means. Moreover, in this manner it is possible to provide "on demand" steam in an instant manner and in the quantities required for the respective application.
  • the unit according to the invention contains a control means, as forming part or being the electronic management, wherein the control means can change and/or coordinate the temperature of the heating means, the pumping means, preferably the pressure and/or flow rate of the pumping means, the steam out put rate and/or the steam pressure at the steam outlet, and/or the steam outlet valve.
  • control means can be set to any predefined or changing values with regard to all relevant unit and process means and sequences.
  • control means maintains a constant preset temperature in the heating means when the flow rate of the pumping means is increased.
  • the flow rate of the pumping means can be managed and controlled as required.
  • the pumping means can produce a flow rate of 0 to 100 g/min, preferably 0 to 75 g/min, more preferably of 35 g/min.
  • the pressure of the pumping means can be managed and controlled as required.
  • the pressure produced by the pumping means is 5 to 15 bar, preferably 7 to 12 bar, more preferably 10 bar.
  • the temperature in the container of the heating means can be decreased by way of a water circuit.
  • the disclosure relates to a process for making instant steam comprising the steps: i. pumping fluid into the water container of a heating means, ii. controlling the temperature and pressure in the heating means to reach a target temperature and a pressure below a maximum target pressure value, iii. discharging steam from the heating means through a steam release means.
  • One advantage of the process of the invention is that the steam that is "ordered" can instantly be provided without an extended period until all process components are at their operational state.
  • the steam will be provided within a very short time from setting the process to work.
  • the steam release means is a nozzle which has preferably a release opening of 0.1 - 1.5 mm.
  • the heating means will be set, and the temperature changes will be controlled as may be required by the other process parameters.
  • the temperature of the heating means will be in the range of 100 °C to 500 °C, preferably between 200 °C to 500 °C.
  • the pressure in the system during the process and /or of the pumping means will be set and controlled in a range which is suitable in view of the other process conditions and parameters as well as with the steam output goal.
  • the heating means is heated up to 500 °C and controlled to reach a target temperature of 200 °C and/or a maximum pressure of 5 to 15 bar, preferably less than 8 bar.
  • the heating means will be set to reach a target temperature which may vary as described above.
  • a target temperature which may vary as described above.
  • the advantage of the inventive process is that the target temperature will be reached in a very short time period. Accordingly, also the hot steam advantageously will be available within a very short time period.
  • the target temperature is reached in 5 to 25 seconds, preferably in 7 to 15 seconds, more preferably in 7 to 11 seconds.
  • the hot steam is ready to be discharged for use within a time period of 5 to 25 seconds, preferably in 7 to 15 seconds, more preferably in 13 to 18 seconds.
  • the discharge of the hot steam can be controlled by any means know to the skilled person and which means are well suitable depending on the particular unit setup and application used.
  • the steam release is controlled by a steam release valve.
  • the fluid preferably water
  • the fluid is pumped into the water container or water compartment connected with the heating means, or surrounding the heating means, or forming a part within the heating means, or being arranged in any useful manner with the heating means.
  • the water will be pumped in a volume and/or with a pressure useful and adapted to the other process conditions.
  • fluid has to be pumped again into the water compartment to provide continued hot steam.
  • the pumping means - after the steam release - is pumping fluid into the water container of a heating means with a predetermined flow rate which is controlled dependent on the temperature of the heating means.
  • the flow rate of the water to be supplied to the water compartment and/or the steam to be discharged will be controlled in relation to the other process parameters and preferably the flow rate is controlled to be in the range of 10 to 100 g/min, preferably 10 to 75 g/min, more preferably 35 g/min.
  • the process according to the invention will set the temperature to a target temperature in the heating means wherein the target temperature may vary during the steam production process depending on various parameters and in view of the volume of steam discharged.
  • the target temperature in the heating means is controlled to 100 °C to 500 °C, preferably to 150 °C to 250 °C.
  • steam can be released within less than 20 seconds, preferably within less than 15 seconds, more preferably within less than 13 seconds.
  • the unit and process as disclosed above can be used and applied in any technical, research, industrial, household or any other way wherein steam is required.
  • One possible use is the application of the steam unit and the process as described above in a device for cleaning.
  • Such a device for cleaning can be any known device for cleaning floors, walls, windows, curtain or any surfaces which will include a steam unit as described above including any or all or any combination of features as disclosed herein.
  • a cleaning device can be a vacuum steam cleaning device or a steam window cleaning device.
  • One possible use is the application of the steam unit and the process as described above in a device for ironing.
  • Other applications of the steam unit as disclosed herein may include but is not limited to steam dryer, aspects of coffee machines, e.g. for preparing hot milk or foam, which may be stand alone applications of in combination with any coffee making machine, vacuum cleaners including steam, ironing appliances.
  • Such a device for ironing can be any known ironing device which applies hot steam.
  • Such a device for ironing can be any known device for steam ironing like a hand held table steam ironing device or applications for professional use which will include a steam unit as described above including any or all or any combination of features as disclosed herein.
  • Heating element

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Irons (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Devices For Medical Bathing And Washing (AREA)
  • Drying Of Solid Materials (AREA)
EP17734239.1A 2016-07-05 2017-06-27 Device and method to produce instant steam Active EP3799606B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16001493 2016-07-05
PCT/EP2017/000746 WO2018006994A1 (en) 2016-07-05 2017-06-27 Device and method to produce instant steam

Publications (2)

Publication Number Publication Date
EP3799606A1 EP3799606A1 (en) 2021-04-07
EP3799606B1 true EP3799606B1 (en) 2024-03-06

Family

ID=56681917

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Application Number Title Priority Date Filing Date
EP17734239.1A Active EP3799606B1 (en) 2016-07-05 2017-06-27 Device and method to produce instant steam

Country Status (5)

Country Link
EP (1) EP3799606B1 (ru)
PT (1) PT3799606T (ru)
RU (1) RU2757184C2 (ru)
UA (1) UA125875C2 (ru)
WO (1) WO2018006994A1 (ru)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110953564A (zh) * 2019-11-15 2020-04-03 天津神菱燃气设备有限公司 真空电壁挂锅炉

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1831449B1 (en) * 2004-12-22 2009-06-03 Koninklijke Philips Electronics N.V. Steam ironing device, ironing board and ironing system, with means adapted to provide an electrically charged steam output

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1975308A1 (en) * 2007-03-30 2008-10-01 Koninklijke Philips Electronics N.V. Method for determining the liquid level in a boiler
GB201419365D0 (en) * 2014-10-30 2014-12-17 Whitbread Martin And Brading Jared Steam dispensing apparatus
CN105202510B (zh) * 2015-09-15 2018-01-05 奇瑞汽车股份有限公司 一种定量生成蒸汽的系统及方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1831449B1 (en) * 2004-12-22 2009-06-03 Koninklijke Philips Electronics N.V. Steam ironing device, ironing board and ironing system, with means adapted to provide an electrically charged steam output

Also Published As

Publication number Publication date
RU2757184C2 (ru) 2021-10-11
WO2018006994A1 (en) 2018-01-11
UA125875C2 (uk) 2022-06-29
PT3799606T (pt) 2024-03-28
RU2018147289A3 (ru) 2020-10-15
RU2018147289A (ru) 2020-08-05
EP3799606A1 (en) 2021-04-07

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