EP3847306A1 - Verfahren zum füllen einer kleidungspflegevorrichtung mit wasser - Google Patents

Verfahren zum füllen einer kleidungspflegevorrichtung mit wasser

Info

Publication number
EP3847306A1
EP3847306A1 EP20754275.4A EP20754275A EP3847306A1 EP 3847306 A1 EP3847306 A1 EP 3847306A1 EP 20754275 A EP20754275 A EP 20754275A EP 3847306 A1 EP3847306 A1 EP 3847306A1
Authority
EP
European Patent Office
Prior art keywords
steam generator
temperature
pump
water
given
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.)
Granted
Application number
EP20754275.4A
Other languages
English (en)
French (fr)
Other versions
EP3847306B1 (de
Inventor
Xin Xian KONG
Kenny KHNG
Yao Hean CHIAH
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips NV
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 Koninklijke Philips NV filed Critical Koninklijke Philips NV
Publication of EP3847306A1 publication Critical patent/EP3847306A1/de
Application granted granted Critical
Publication of EP3847306B1 publication Critical patent/EP3847306B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • D06F75/00—Hand irons
    • D06F75/08—Hand irons internally heated by electricity
    • D06F75/26—Temperature control or indicating arrangements

Definitions

  • the invention relates to a method of water priming a garment care device.
  • the invention also relates to a garment care device implementing such a method.
  • the invention may be used in the field of garment care.
  • a mobile unit comprising a steam generator, a base, a cord for connecting the base and the mobile unit, a water tank and a pump arranged in the base for pumping water from the water tank to the steam generator via the cord.
  • the generated steam is used to treat garments, such as removing wrinkles.
  • the above-mentioned garment care devices have technical limitations in the sense that after the user has actuated the steam trigger arranged on the mobile unit, there is a relatively long delay before steam is finally generated by the steam generator. In other words, such types of garment care devices lack responsiveness in steam generation, which may affect the efficiency of garment treatment, as well as result in a negative user experience.
  • CN 103 374 812 A discloses a steam-type electric iron, and a control method for controlling the iron.
  • US 2009/084007 A1 discloses a steam iron comprising a base, a main body, and a control board.
  • the base comprises a water tank, a steam generator, and a pump that is connected between the water tank and the steam generator.
  • WO 2005/054564 A1 discloses a method for ironing a textile item, and an apparatus for carrying out the method.
  • the method according to the invention is for water priming a garment care device comprising a mobile unit comprising a steam generator and a temperature sensor, a base, a cord for connecting the base and the mobile unit, a water tank and a first pump arranged in the base for pumping water from the water tank to the steam generator via the cord.
  • the method according to the invention comprises the following steps: a step of starting the heating of the steam generator, a first step of detecting, using the temperature sensor, that the steam generator has a temperature equal or larger than a given first increased temperature, after the steam generator has a temperature equal or larger than said given first increased temperature, a step of starting the first pump, a second step of detecting, using the temperature sensor, that the steam generator has a temperature equal or larger than a given second increased temperature, said second increased temperature being equal or larger than said first increased temperature, after the steam generator has a temperature equal or larger than said given second increased temperature, a step of stopping the heating of the steam generator, a step of measuring, using the temperature sensor, at least one rate of temperature decrease for the steam generator, after the at least one rate of temperature decrease of the steam generator has exceeded a certain threshold, a step of stopping the first pump.
  • This method allows that before the garment care device is used by the user for treating garments, the water circuit carrying water between the base and the steam generator arranged in the mobile unit is already primed with water. This method is thus preferably implemented during the start-up phase of the device, right after the user has switched-on the device, and before the time the device indicates to the user that the start-up phase is finished and that the device is ready to be used.
  • the water circuit may comprise a water pipe arranged in the cord, as well as other water pipe portions or water path arranged in the base and/or in the mobile unit for carrying water between the base and the steam generator.
  • the water circuit carrying water between the base and the steam generator arranged in the mobile unit is primed with water when a significant decrease of temperature of the steam generator is detected, reflecting that the water circuit is filled-in with water, and that water has now reached the steam generator.
  • the water circuit is already filled-in with water (i.e. all air has been replaced by water), so that water can be instantaneously dosed into the steam generator, and generate steam also instantaneously. In other words, there is no delay between actuating the steam trigger, and the steam generation.
  • the invention also relates to a garment care device implementing steps of the above method.
  • the invention also relates to a computer program product comprising instructions codes for implementing steps of the above method.
  • Fig.1 depicts a garment care device according to the invention
  • Fig.2 depicts a flow chart of a method according to the invention
  • Fig.3 depicts a first series of signals when a method according to the invention is used
  • Fig.4 depicts a second series of signals when a method according to the invention is used.
  • Fig.1 depicts a garment care device 100 according to the invention.
  • the garment care device 100 comprises: a mobile unit 101 comprising a steam generator 102 and a temperature sensor, a base 103, a cord 104 for connecting the base 103 and the mobile unit 101, a water tank 105 and a first pump PI arranged in the base 103 for pumping water from the water tank 105 to the steam generator 102 via the cord 104.
  • the cord 104 may correspond to a hose cord comprising at least one water pipe to carry water from the water tank 105 to the steam generator 102.
  • the temperature sensor may detect a temperature of the steam generator, such as a temperature within the steam generator.
  • the temperature sensor may, for instance, comprise or consist of a thermistor.
  • the temperature sensor may be in thermal contact with the steam generator.
  • the temperature sensor may be mounted on or in a wall of the steam generator.
  • the mobile unit 101 is a steam iron 101 or a steamer head (not shown).
  • the base 103 further comprises a second steam generator 106 supplied in water by a second pump P2 from the water tank 105, for generating steam carried from the base 103 to the mobile unit 101 via the cord 104.
  • the base 103 comprises a micro controlling unit MCU adapted to actuate the pump PI and/or P2, retrieve a temperature signal from the temperature sensor, and perform various measurements and calculations, by running a computer program product comprising instructions codes implementing steps of the method according to the invention that will be described in the following.
  • Fig.2 depicts a flow chart of a method according to the invention.
  • Fig.3 depicts a first series of signals when a method according to the invention is used.
  • the method comprises a step SI of starting the heating of the steam generator 102. This step is started at time tO. At that time, the temperature T of the steam generator 102 is TO, which may for example be close to the ambient room temperature where the device is located. After the heating of the steam generator 102 has started, the temperature of the steam generator 102 increases, more or less linearly depending on the characteristics of the steam generator 102.
  • the method also comprises a first step S2 of detecting that the steam generator 102 has a temperature T equal or larger than a given first increased temperature Tl.
  • a temperature measurement of the steam generator 102 is performed regularly, for example every second.
  • the steam generator 102 has a temperature T equal or larger than said given first increased temperature Tl at time tl.
  • the given first increased temperature Tl is a value in the range [90; 150] degrees Celsius, for example 120 degrees Celsius.
  • the method also comprises a step S3 of starting the first pump PI.
  • this may happen at time tl or slightly later.
  • Water is thus pumped from the water tank 105, and water starts to flow along the water circuit formed by: a water pipe portion between the water tank 105 and the first pump PI, - the inside of the first pump P 1 , a water pipe portion in the base 103 being downstream the first pump PI, a water pipe portion in the hose cord 104, a water pipe portion in the mobile unit 101 being upstream the steam generator 102.
  • water circuit would already be partly filled-in with water, for example if the user has recently used the garment care device, water will continue to flow along the water circuit from the point where water had drained out or had evaporated.
  • the method also comprises a second step S4 of detecting that the steam generator 102 has a temperature T equal or larger than a given second increased temperature T2, the second increased temperature T2 being equal or larger than said first increased temperature Tl.
  • a temperature measurement of the steam generator 102 is performed regularly, for example every second.
  • the steam generator 102 has a temperature T equal or larger than said given second increased temperature T2 at time t2.
  • the given second increased temperature T2 is a value in the range [130; 190] degrees Celsius, for example 150 degrees Celsius.
  • the method also comprises a step S5 of stopping the heating of the steam generator 102.
  • this given second increased temperature T2 is deemed a sufficiently high temperature for the steam generator 102 in terms of for example being able to generate a sufficient amount of steam as soon as the start-up phase of the device will be elapsed.
  • the method also comprises a step (S6) of measuring at least one rate of temperature decrease for the steam generator (102).
  • the temperature of the steam generator 102 will in turns decrease step by step. It is noted that right after the heating of the steam generator 102 has been stopped, the temperature of the steam generator 102 might still increase little bit until the hottest areas of the steam generator 102 have balanced in temperature with cooler areas of the steam generator 102. This is illustrated in Fig.3 by a temperature overshoot OV. Again, the presence of this overshoot OV does not affect the robustness of the measurements and calculations conducted by the method according to the invention.
  • the temperature of the steam generator 102 will in general decrease relatively slowly, mainly via loss of energy by thermal convection in the surrounding ambient air, and/or by thermal conduction if the mobile unit 101 is placed on a support during the start-up phase.
  • the rate R of temperature decrease of the steam generator 102 will be higher, in particular when exceeding a certain threshold TH.
  • the method according to the invention uses this approach to identify that water pumped from the water tank 105 has reached the steam generator 102. This implies that a measurement of the rate R of temperature decrease of the steam generator 102 is performed regularly, for example every second.
  • the method also comprises a step S7 of stopping the first pump PI.
  • the step S7 of stopping the first pump PI happens at time t3.
  • said at least one rate R of temperature decrease is measured as an elapsed time for a given amount of temperature decrease.
  • the time elapsed for a given amount of temperature decrease of for example 3 degrees Celsius is measured, and this time elapsed is compared with a time threshold of for example 4 seconds. If the measured time elapsed (for example 3 seconds) is less than the time threshold, this means that water pumped from water tank 105 has reached the steam generator 102
  • said at least one rate R of temperature decrease is measured as a temperature decrease over a given duration of elapsed time.
  • the temperature decrease for a given time elapsed of for example 4 seconds is measured, and this temperature decrease is compared with a temperature threshold of for example 3 degrees Celsius. If the measured temperature decrease (for example 4 degrees Celsius) is more than the temperature threshold, this means that water pumped from water tank 105 has reached the steam generator 102.
  • the at least one rate R of temperature decrease comprises a plurality of consecutive rates of temperature decrease exceeding said certain threshold (TH), preferably two or three consecutive rates of temperature decrease. This prevents from false detections of water reaching the steam generator 102. In other words, this improves the robustness of detecting that water has reached the steam generator 102 and that the water circuit is now fully filled-in with water (i.e. the water circuit is primed).
  • a first check of the rate (R) of temperature decrease is made when the steam generator 102 reaches 147
  • a second check of the rate (R) of temperature decrease is made when the steam generator 102 reaches 144
  • a third check of the rate (R) of temperature decrease is made when the steam generator 102 reaches 141. If each of those three checks are such that the rate R of temperature decrease of the steam generator 102 has exceeded a certain threshold TH, this means that water has reached the steam generator 102 and that the water circuit is now fully filled-in with water (i.e. the water circuit is primed).
  • the step S6 of measuring at least one rate R of temperature decrease for the steam generator 102 is started either: immediately from the time said steam generator 102 has reached said second increased temperature T2 and the heating of the steam generator 102 has been stopped, or after a certain duration from the time said steam generator 102 has reached said second increased temperature T2 and the heating of the steam generator 102 has been stopped.
  • the at least one rate R of temperature decrease is measured as an elapsed time for a given amount of temperature decrease
  • the measured time elapsed is started from time t2, or a time delayed by a fixed value after time t2, for example two seconds.
  • the step S3 of starting the first pump PI comprises setting the water flow rate of the first pump PI in the range [3;30] g/mn.
  • Values in this range provides a good balance between having a sufficient flow rate making possible to finish the priming of the water circuit before the end of the start-up phase of the device, and not too high values of the flow rate that might have otherwise result in flooding the steam generator 102 before stopping the first pump PI.
  • a flow rate of 9 g/mn for the first pump PI can be selected.
  • the water flow rate of the first pump (PI) may be set by varying the duty cycle of the activation of the first pump (PI).
  • the method further comprises a step S8 of setting the device in an operating mode allowing any of the following modes: decreasing the temperature of the first steam generator 102 by starting the first pump PI, and/or delivering a boost of steam by the first steam generator 102 by starting the first pump PI
  • the method further comprises comprising a step S9 of stopping the first pump PI, if after a given duration Dmax starting from said step SI of starting the heating of the steam generator 102, the at least one rate of temperature decrease of the steam generator 102 has not exceeded said certain threshold TH.
  • This situation reflects a potential problem in the garment care device such as a water pipe broken or with leaking, water pipe stroked, pump deficient.... In that case, it is preferred to stop the first pump PI .
  • the method further comprises a step S10 of setting the device in an operating safe mode after the step S9 of stopping the first pump PI.
  • the operating safe mode can be choose among the following:
  • Fig.4 depicts a second series of signals when a method according to the invention is used.
  • Fig.4 differs from Fig.3 is that the first increased temperature T1 has same value has the second increased temperature T2, for example 150 degrees Celsius.
  • the first pump PI is started much later than in the scenario of Fig.3. Indeed, the first pump PI is here started at time t2. In general, this means that less time will be available to complete the water priming of the water circuit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
EP20754275.4A 2019-08-29 2020-08-17 Verfahren zum füllen einer kleidungspflegevorrichtung mit wasser Active EP3847306B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19194219.2A EP3786346A1 (de) 2019-08-29 2019-08-29 Verfahren zum füllen einer kleidungspflegevorrichtung mit wasser
PCT/EP2020/072963 WO2021037596A1 (en) 2019-08-29 2020-08-17 Method of water priming a garment care device

Publications (2)

Publication Number Publication Date
EP3847306A1 true EP3847306A1 (de) 2021-07-14
EP3847306B1 EP3847306B1 (de) 2022-05-04

Family

ID=67809245

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19194219.2A Withdrawn EP3786346A1 (de) 2019-08-29 2019-08-29 Verfahren zum füllen einer kleidungspflegevorrichtung mit wasser
EP20754275.4A Active EP3847306B1 (de) 2019-08-29 2020-08-17 Verfahren zum füllen einer kleidungspflegevorrichtung mit wasser

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP19194219.2A Withdrawn EP3786346A1 (de) 2019-08-29 2019-08-29 Verfahren zum füllen einer kleidungspflegevorrichtung mit wasser

Country Status (4)

Country Link
EP (2) EP3786346A1 (de)
CN (1) CN112789376B (de)
RU (1) RU2765177C1 (de)
WO (1) WO2021037596A1 (de)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2679287B2 (ja) * 1989-08-18 1997-11-19 松下電器産業株式会社 アイロン
ITPN20030085A1 (it) * 2003-12-05 2005-06-06 Euro Star Srl Procedimento per la stiratura di un articolo tessile,
EP1975308A1 (de) * 2007-03-30 2008-10-01 Koninklijke Philips Electronics N.V. Verfahren zum Bestimmen des Flüssigkeitsstandes in einem Erhitzer
CN201121277Y (zh) * 2007-09-29 2008-09-24 厦门灿坤实业股份有限公司 一种蒸汽熨斗
CN103374812A (zh) * 2013-07-09 2013-10-30 广东新宝电器股份有限公司 蒸汽式电熨斗及其控制方法
EP3464706A1 (de) * 2016-05-26 2019-04-10 Koninklijke Philips N.V. Bügelsystem mit wasserabgabevorrichtung

Also Published As

Publication number Publication date
EP3786346A1 (de) 2021-03-03
EP3847306B1 (de) 2022-05-04
RU2765177C1 (ru) 2022-01-26
WO2021037596A1 (en) 2021-03-04
CN112789376B (zh) 2022-04-08
CN112789376A (zh) 2021-05-11

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