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WO2017036560A1 - Machine à laver le linge présentant une meilleure sécurité de génération de vapeur - Google Patents

Machine à laver le linge présentant une meilleure sécurité de génération de vapeur Download PDF

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Publication number
WO2017036560A1
WO2017036560A1 PCT/EP2015/070267 EP2015070267W WO2017036560A1 WO 2017036560 A1 WO2017036560 A1 WO 2017036560A1 EP 2015070267 W EP2015070267 W EP 2015070267W WO 2017036560 A1 WO2017036560 A1 WO 2017036560A1
Authority
WO
WIPO (PCT)
Prior art keywords
steam
drum
mode
unit
process air
Prior art date
Application number
PCT/EP2015/070267
Other languages
English (en)
Inventor
Onur ERCAN
Yuksel ONUR
Erdem Kara
Selcuk KARAGOZ
Original Assignee
Arcelik Anonim Sirketi
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 Arcelik Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Priority to PCT/EP2015/070267 priority Critical patent/WO2017036560A1/fr
Publication of WO2017036560A1 publication Critical patent/WO2017036560A1/fr

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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
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/203—Laundry conditioning arrangements
    • 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
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/08—Humidity
    • 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
    • D06F2103/28—Air properties
    • D06F2103/32—Temperature
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/38—Conditioning or finishing, e.g. control of perfume injection
    • D06F2105/40—Conditioning or finishing, e.g. control of perfume injection using water or steam
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/62—Stopping or disabling machine operation
    • 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
    • D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air 
    • 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
    • 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
    • D06F58/00—Domestic laundry dryers
    • D06F58/32—Control of operations performed in domestic laundry dryers 
    • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/36—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F58/44—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of conditioning or finishing, e.g. for smoothing or removing creases
    • 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
    • D06F58/00—Domestic laundry dryers
    • D06F58/32—Control of operations performed in domestic laundry dryers 
    • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/50—Responding to irregular working conditions, e.g. malfunctioning of blowers

Definitions

  • the present invention relates to a laundry machine, in particular to a laundry dryer or a combined type laundry washer-dryer.
  • the present invention more particularly relates to a laundry machine which has a steam applying facility for the treatment of the laundry with steam.
  • Laundry machines such as laundry dryers as well as combined type laundry washer-dryers are commonly known in the art.
  • a laundry machine is commonly provided with a steam applying facility which treats the laundry with steam.
  • the steam removes the wrinkles and the creases from the laundry. Moreover, steam has a sanitizing effect and also removes unpleasant odors.
  • the steam applying facility generally comprises a steam generator that generates pressurized steam and supplies the same to a steam injection apparatus that injects the steam directly into the drum.
  • the steam applying facility also comprises a replenishable tank for storing water; and a pump for conveying the water from the tank to the steam generator.
  • WO2015078512 A1 discloses a laundry machine which has a steam applying facility.
  • An objective of the present invention is to provide a laundry machine which solves the aforementioned problems of the prior art in a cost-effective way and which prevents the steam applying facility from overheating and enables an improved steam generation safety.
  • control unit is programmed to initiate the steam applying mode after completion of the drying mode, to monitor during the steam applying mode the temperature inside the drum by means of the process air temperature sensor, to judge whether the steam applying unit is operating under normal conditions or abnormal conditions based on the monitoring result, to terminate the steam applying mode if the judgement is negative, and to continue the steam applying mode if the judgement is positive.
  • a major advantageous effect of the present invention is that the control unit is enabled to detect whether the steam applying unit continues to operate although it has run out of water. Thereby, the control unit can immediately prevent the steam applying unit, in particular the steam generator and the pump from continuing to operate under abnormal conditions by way of deenergizing them, and thus the risk of receiving damages due to the excessive heat can be eliminated or reduced as much as possible.
  • Another major advantageous effect of the present invention is that the control unit performs the abnormality/normality detection by way of using the process air temperature sensor in the drying unit.
  • the process air temperature sensor can be used both in the drying mode and in the subsequent steam applying mode. Thereby, the production costs can be reduced both in material and labor.
  • control unit determines the initial temperature inside the drum by means of the process air temperature sensor immediately after initiation of the steam applying mode as T_initial. Then, the control unit determines the maximum temperature inside the drum by means of the same sensor within a predetermined time interval ⁇ t that starts immediately from the initiation of the steam supplying mode as T_max. Then, the control unit judges that the steam applying unit is operating under normal conditions provided that T_max is higher than T_initial at least through a predetermined threshold temperature T_threshold. However, if the difference between T_max and T_initial is less than T_threshold, then the control unit judges that the steam applying unit is operating under abnormal conditions.
  • This embodiment is particularly advantageous as the abnormality/normality detection can be easily performed upon initiation of the steam applying mode within a comparatively short time interval.
  • the abnormality/normality detection may be repeated for one or more following time intervals in accordance with the operation periods of the steam applying unit, including that of the pump and the steam generator prior to completion of the steam applying mode.
  • the overheating of the steam generator and the pump can be additionally detected through a thermostat which is disposed in close proximity to the steam generator and the pump.
  • the thermostat deenergizes the steam generator and the pump in case of overheating and reenergizes the same after the thermostat temperature is decreases to the normal level.
  • This embodiment is particularly advantageous as the thermostat renders the steam generation safer. Thus, a double safety can be achieved.
  • the laundry machine is respectively provided with a heat-pump type drying unit and a condenser type drying unit. These embodiments are particularly advantageous as the abnormality/normality detection which is conducted by the control unit can be applied to either type of laundry machines.
  • the laundry machine is respectively provided as a laundry dryer and a combination type laundry washer-dryer.
  • This embodiment is particularly advantageous as the abnormality/normality detection which is conducted by the control unit can be applied to either type of laundry machines.
  • the present invention also provides a control method and a corresponding computer program which comprises computer-readable codes that cause the control unit, in particular the processor of a programmable laundry machine to execute the aforementioned abnormality/normality detection.
  • the program of the present invention is provided in suitable a non-volatile storage medium.
  • Figure 1 – is a schematic partial view of a laundry machine according to an embodiment of the present invention.
  • Figure 2 is another schematic partial view of the laundry machine according to an embodiment of the present invention.
  • Figure 3 – is a flowchart showing the steps of a method for controlling the laundry machine according to an embodiment of the present invention
  • Figure 4 is another schematic partial perspective view of the laundry machine according to an embodiment of the present invention.
  • Figure 5 – is a schematic partial perspective enlarged view of the steam applying unit used in the laundry machine according to an embodiment of the present invention
  • Figure 6 – is a schematic partial enlarged top view of the steam applying unit of Fig. 5;
  • Figure 7 – is a schematic perspective enlarged view of the steam injection apparatus used in the laundry machine of Fig. 4.
  • T_inital The temperature inside the drum (2a) as measured by means of the process air sensor (3a) immediately after initiation of the steam applying mode.
  • ⁇ t A time interval of a predetermined length that starts immediately from the initiation of the steam supplying mode.
  • T_max The maximum temperature inside the drum (2a) as measured by means of the process air sensor (3a) within the time interval ⁇ t.
  • T_threshold A threshold temperature.
  • the laundry machine (1) in particular a laundry dryer or a laundry washer-dryer comprises a drum unit (2) which includes a rotatable drum (2a) that is adapted to receive the laundry to be dried, a drying unit (3) that is adapted to circulate the process air through the drum (2a), and to heat the process air to be moved into the drum (2a) and to dehumidify the process air moved out of the drum (2a), wherein the drying unit (3) includes a sensor (3a) for sensing the temperature of the process air; a steam applying unit (4) that is adapted to generate the pressurized steam and to inject the same into the drum (2a), wherein the steam applying unit (4) includes a steam injection apparatus (4a) which has an inlet port (4b) for receiving the pressurized steam, an outlet port (4c) for injecting the pressurized steam into the drum (2a), and a drain port (4d) for draining the condensate; a receptacle (4e) for collecting the drained condensate; one or more serially connected drain tubes
  • control unit (5) is programmed to initiate the steam applying mode after completion of the drying mode, to monitor during the steam applying mode the temperature inside the drum (2a) by means of the process air sensor (3a), to judge whether the steam applying unit (4) is operating under normal conditions or abnormal conditions based on the monitoring result, to terminate the steam applying mode if the judgement is negative, and to continue the steam applying mode if the judgement is positive.
  • control unit (5) is further programmed to determine the temperature inside the drum (2a) by means of the process air sensor (3a) immediately after initiation of the steam applying mode as T_initial, to determine the maximum temperature inside the drum (2a) by means of the process air sensor (3a) within the time interval ⁇ t that starts immediately from the initiation of the steam supplying mode as T_max, to judge that the steam applying unit (4) is operating under normal conditions if T_max - T_initial ⁇ T_threshold, wherein T_threshold is a threshold temperature, and to judge that the steam applying unit (4) is operating under abnormal conditions if the T_max - T_initial ⁇ T_threshold.
  • the laundry machine (1) is provided with a heat-pump type drying unit (3).
  • the drying unit (3) includes a duct (3b) for circulating the process air through the drum (2a), wherein the sensor (3a) is disposed into the duct (3b) in close proximity to the drum (2a), and wherein the duct (3b) has an outlet (3c) for moving the process air into the drum (2a), and an inlet (3d) for moving the the process air out of the drum (2a); and a fan (not shown) for moving the process air, wherein the fan is disposed into the duct (3b); and a heat-pump (3e) for circulating the refrigerant, wherein the heat-pump (3e) has an evaporator (3f), a compressor (3g), a condenser (3h), an expansion valve (3i) which are serially connected to circulate the refrigerant, and a sensor (3j) for sensing the temperature of the refrigerant.
  • the steam applying unit (4) includes a thermostat (not shown) which detects overheating of the steam generator (4g) and the pump (4l).
  • the thermostat is disposed into close proximity to the steam generator (4g) and the pump (4l). The thermostat is adapted to deenergize the steam generator (4g) and the pump (4l) in case of overheating and to reenergize the steam generator (4g) and the pump (4l) when the thermostat temperature decreases again to the normal level.
  • the steam applying unit (4) further includes a trap (4o) which allows the condensate to be conveyed via the one or more drain tubes (4f) to the receptacle (4e) whereas trap (4o) blocks the pressurized steam and prevents it from escaping to the outside via the drain port (4d).
  • the control method of the present invention comprises a step of initiating (S3) the steam applying mode after completion of the drying mode, wherein the drying mode is initiated and subsequently completed in the preceding steps (S1-S2); a step of monitoring (S4) during the steam applying mode the temperature inside the drum (2a) by means of the temperature sensor (3a) that is arranged to sense the process air; a step of judging (S5) whether the steam applying unit (4) is operating under normal conditions or abnormal conditions based on the monitoring result; a step of terminating (S6) the steam applying mode if the judgement is negative; and a step of continuing (S7) the steam applying mode if the judgement is positive. In the latter case the steam applying mode is completed in the following step (S8).
  • the monitoring step (S4) includes a step of determining the temperature inside the drum (2a) by means of the process air sensor (3a) immediately after initiation of the steam supplying mode as T_initial; and a step of determining the maximum temperature inside the drum (2a) by means of the process air sensor (3a) within the time interval ⁇ t that starts immediately from the initiation of the steam supplying mode as T_max.
  • the judging step (S5) includes a step of judging that the steam applying unit (4) is operating under normal conditions if T_max - T_initial ⁇ T_threshold, wherein T_threshold is a threshold temperature; and a step of judging that the steam applying unit (4) is operating under abnormal conditions if the T_max - T_initial ⁇ T_threshold.
  • the computer program of the present invention comprises computer-readable codes which are adapted to cause the laundry machine (1) to execute the above methods steps.
  • the operation of the laundry machine (1) will be explained in more detail by way of example.
  • the laundry machine (1) in particular the laundry dryer is taken into operation, the wet laundry is dried in the drying mode through the hot process air until it reaches the desired target dryness level and subsequently aerated so as to decrease the temperature of the laundry within the drum (2a).
  • the drying mode is completed and the steam applying mode is initiated.
  • the steam applying mode the pressurized steam is applied onto the laundry within the drum (2a). If the steam applying unit (4) operates under normal conditions, the temperature inside the drum (2a) will accordingly increase within the time interval ⁇ t after initiation of the steam applying mode at least through a certain amount, i.e. T_threshold.
  • a major advantageous effect of the present invention is that the control unit (5) is enabled to detect whether the steam applying unit (4) continues to operate although it has run out of water. Thereby, the control unit (5) can immediately prevent the steam applying unit (4), in particular the steam generator (4g) and the pump (4l) from continuing to operate under the abnormal conditions by way of deenergizing them, and thus the risk of receiving damages due to the excessive heat can be eliminated or reduced as much as possible.
  • Another major advantageous effect of the present invention is that the control unit performs the abnormality/normality detection by way of using the process air temperature sensor (3a) in the drying unit (3).
  • the process air temperature sensor (3a) can be used both in the drying mode and in the subsequent steam applying mode. Thereby, the production costs can be reduced both in material and labor.
  • Other advantageous effects of the present invention can be taken from the above-described particular embodiments.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

La présente invention concerne une machine à laver le linge (1) comprenant une unité tambour (2), une unité de séchage (3) qui comporte un capteur (3a) pour la détection de la température de l'air de traitement, une unité d'application de vapeur (4), et une unité de commande (5) qui présente un mode de séchage et un mode d'application de vapeur. Dans la machine à laver le linge (1) selon la présente invention, l'unité de commande (5) est programmée pour initier le mode d'application de vapeur après l'achèvement du mode de séchage, pour surveiller pendant le mode d'application de vapeur la température à l'intérieur du tambour (2a) au moyen du capteur d'air de traitement (3a), pour juger si l'unité d'application de vapeur (4) fonctionne dans des conditions normales ou dans des conditions anormales sur la base du résultat de surveillance, pour mettre fin au mode d'application de vapeur si le jugement est négatif, et pour poursuivre le mode d'application de vapeur si le jugement est positif.
PCT/EP2015/070267 2015-09-04 2015-09-04 Machine à laver le linge présentant une meilleure sécurité de génération de vapeur WO2017036560A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2015/070267 WO2017036560A1 (fr) 2015-09-04 2015-09-04 Machine à laver le linge présentant une meilleure sécurité de génération de vapeur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2015/070267 WO2017036560A1 (fr) 2015-09-04 2015-09-04 Machine à laver le linge présentant une meilleure sécurité de génération de vapeur

Publications (1)

Publication Number Publication Date
WO2017036560A1 true WO2017036560A1 (fr) 2017-03-09

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PCT/EP2015/070267 WO2017036560A1 (fr) 2015-09-04 2015-09-04 Machine à laver le linge présentant une meilleure sécurité de génération de vapeur

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4116483A4 (fr) * 2020-03-04 2024-04-03 LG Electronics Inc. Sèche-linge et procédé de commande de sèche-linge

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080250819A1 (en) * 2005-03-25 2008-10-16 Lg Electronics Inc. Laundry Machine and Method for Controlling the Same
EP1985740A2 (fr) * 2007-04-24 2008-10-29 Samsung Electronics Co., Ltd. Machine à laver à tambour et son procédé de lavage
US20100050465A1 (en) * 2007-04-05 2010-03-04 Myong Hun Im Operating method for drum type laundry machine
US20150168060A1 (en) * 2013-12-12 2015-06-18 Lg Electronics Inc. Control method of fabric treatment apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080250819A1 (en) * 2005-03-25 2008-10-16 Lg Electronics Inc. Laundry Machine and Method for Controlling the Same
US20100050465A1 (en) * 2007-04-05 2010-03-04 Myong Hun Im Operating method for drum type laundry machine
EP1985740A2 (fr) * 2007-04-24 2008-10-29 Samsung Electronics Co., Ltd. Machine à laver à tambour et son procédé de lavage
US20150168060A1 (en) * 2013-12-12 2015-06-18 Lg Electronics Inc. Control method of fabric treatment apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4116483A4 (fr) * 2020-03-04 2024-04-03 LG Electronics Inc. Sèche-linge et procédé de commande de sèche-linge

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