EP3461942B1 - Waschmaschine und verfahren zum kühlen einer waschmaschinentürdichtung - Google Patents

Waschmaschine und verfahren zum kühlen einer waschmaschinentürdichtung Download PDF

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Publication number
EP3461942B1
EP3461942B1 EP17193890.5A EP17193890A EP3461942B1 EP 3461942 B1 EP3461942 B1 EP 3461942B1 EP 17193890 A EP17193890 A EP 17193890A EP 3461942 B1 EP3461942 B1 EP 3461942B1
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EP
European Patent Office
Prior art keywords
door seal
water
washing machine
directing
detecting
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
EP17193890.5A
Other languages
English (en)
French (fr)
Other versions
EP3461942A1 (de
Inventor
Samet YILMAZ
Ali Utku SACKIRAN
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.)
Vestel Elektronik Sanayi ve Ticaret AS
Original Assignee
Vestel Elektronik Sanayi ve Ticaret AS
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 Vestel Elektronik Sanayi ve Ticaret AS filed Critical Vestel Elektronik Sanayi ve Ticaret AS
Priority to EP17193890.5A priority Critical patent/EP3461942B1/de
Priority to TR2017/14660A priority patent/TR201714660A2/tr
Publication of EP3461942A1 publication Critical patent/EP3461942A1/de
Application granted granted Critical
Publication of EP3461942B1 publication Critical patent/EP3461942B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • D06F37/266—Gaskets mounted between tub and casing around the loading opening
    • 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 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/47—Responding to irregular working conditions, e.g. malfunctioning of pumps 
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • 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 
    • D06F39/08—Liquid supply or discharge arrangements

Definitions

  • the present disclosure relates to a washing machine and a method for cooling a door seal of a washing machine.
  • Washing machines typically have a seal between the door of the washing machine and the drum which holds the laundry items and spins during operation.
  • the seal prevents leakage of water from the machine during operation. It is known that the door seal can heat up during operation of the washing machine, which can damage the seal.
  • DE19908805A1 discloses a washing machine in which the door seal of the washing machine is moistened with water (without detergent) at the start of the washing program.
  • a method of cooling a door seal of a washing machine comprising: detecting heating of the door seal; and if the detected heating indicates that the temperature of the door seal is above a threshold, directing water at the door seal to cool the door seal.
  • a door seal of the washing machine can heat up, which can damage the door seal. This may be because for example laundry items in the rotating drum of the washing machine rub against the door seal, or because for example laundry items become trapped or lodged in the door seal and other laundry items in the drum rotate over the stuck items.
  • water is directed at the door seal to cool the door seal.
  • the method comprises: following directing water at the door seal, stopping the directing of water at the door seal if the detected heating indicates that the temperature of the door seal is below a threshold. That is, water may only need to be directed at the door seal until the temperature returns to a normal operating condition. This ensures the minimum amount of energy and water is used during cooling of the door seal.
  • the threshold for causing water to be directed at the door seal may be different from the threshold for causing the directing of water to be stopped. That is, the water seal may be cooled to a desired operating temperature sufficiently far from the threshold for triggering the directing of water. This helps to prevent persistent or frequent switching between the directing of water and the stopping of directing water at the door seal.
  • the detecting heating of the door seal comprises detecting a gas emitted by the door seal as the door seal heats. It has been appreciated that, as the door seal heats up, gases may be emitted from the seal material. The detection of gases is therefore an indication that the door seal is heating. This provides a way of detecting heating of the door seal without requiring for example an electronic thermometer or thermocouple of the like to be fitted, which may not be convenient or possible in some washing machines.
  • the water is directed from one or more cooling pipes and water is supplied to the one or more cooling pipes from a water box of the washing machine.
  • the water box receives rinsing water which has rinsed laundry items during operation of the washing machine.
  • the method comprises: detecting a laundry item as being lodged in the door seal; and directing water at the laundry item to dislodge the laundry item from the door seal. That is, a laundry item can be dislodged from the door seal to prevent any further heating of the door seal and/or to prevent any wear and tear of the door seal.
  • a washing machine comprising: a door seal; an arrangement for detecting heating of the door seal; an arrangement for directing of water at the door seal; and a controller configured to control directing of water at the door seal to cool the door seal if the detected heating indicates that the temperature is above a threshold.
  • the controller is configured to stop the directing of water at the door seal if, following the directing of water at the door seal, the detected heating indicates that the temperature of the door seal is below a threshold.
  • the washing machine comprises: a gas detector for detecting a gas emitted by the door seal as the door seal heats.
  • the arrangement for directing of water at the door seal comprises one or more cooling pipes for directing water at the door seal; and comprises a water box in fluid communication with the one or more cooling pipes to supply water to the one or more cooling pipes from the water box.
  • the water box is configured to receive rinsing water which has rinsed laundry items during operation of the washing machine.
  • the washing machine comprises: an arrangement for detecting a laundry item as being lodged in the door seal, wherein the arrangement for directing of water at the door seal is configured to direct water at the laundry item to dislodge the laundry item from the door seal.
  • Figure 1 shows schematically an example of a washing machine for cooling the door seal of the washing machine.
  • the door seal can heat up. This may be because for example laundry items in the rotating drum of the washing machine rub against the door seal, or because for example laundry items become trapped or lodged in the door seal and other laundry items in the drum rotate over the stuck items.
  • water is directed at the door seal to cool the door seal.
  • the washing machine 100 may be a stand-alone washing machine or a combined washer/dryer (i.e. a combined washing machine and tumble dryer).
  • a combined washer/dryer i.e. a combined washing machine and tumble dryer.
  • any reference to the "washing machine” is in general applicable to a stand-alone washing machine or a combined washer/dryer.
  • the washing machine 100 has a door 102 which can be opened to place laundry items in a washing drum 104.
  • Laundry items may be e.g. items of clothing, bed linen, towels, etc.
  • the washing drum 104 is configured to rotate during operation of the washing machine 100 (e.g. during a wash, rinse or spin operation).
  • the washing machine 100 also has a door seal 106 between the door 102 and the drum 104.
  • the door seal 106 is configured to prevent water leakage from the drum 104 during and after operation of the washing machine 100.
  • the door seal 106 is typically made from rubber material. Specific materials used for washing machine door seals 106 will be known to the skilled person.
  • the washing machine 100 also has a heat detecting arrangement 108 for detecting heating of the door seal 106. Some specific examples for the heat detecting arrangement 108 will be discussed further below.
  • the washing machine 100 also has a water-directing arrangement 110 for directing of water at the door seal 106.
  • the water-directing arrangement 110 may generally be, for example, located within the body of the washing machine 100.
  • the water-directing arrangement 110 may comprise one or more cooling pipes 111 for directing water at the door seal 106.
  • the or each pipe may have a nozzle or the like at the outlet facing the door seal 106 for assisting in spraying or ejecting water.
  • Figure 1 shows a single cooling pipe 111 in this example but more than one cooling pipe 111 may be used to direct water at the door seal 106 in other examples.
  • multiple cooling pipes 111 may be constructed and arranged such that water may be directed at the entire door seal 106.
  • multiple cooling pipes 111 may be arranged to direct water at the a number of specific points on the door seal 106, such as for example the topmost, bottommost, leftmost and rightmost points of the door seal 106.
  • the washing machine 100 also has a controller 112 configured to control directing of water at the door seal 106.
  • the controller 112 is operatively coupled to the heat detecting arrangement 108 in order to receive an indication of heating of the door seal 106.
  • the controller is also operatively coupled to the water-directing arrangement 110 in order to control directing of water at the door seal 106 from the water-directing arrangement 110.
  • heating of the door seal is detected 106 by the heat detecting arrangement 108. If the detected heating indicates that the temperature of the door seal 106 is above a first threshold, the water-directing arrangement 110 is controlled so that water is directed at the door seal 106 to cool the door seal 106.
  • a region 106' of the door seal 106 at or near the lowermost part of the door seal 106 has become heated (e.g. due to lodged items of laundry).
  • the heating of the door seal 106 may be detected and may indicate that the temperature of the door seal 106 is above the first threshold.
  • water is directed towards the heated region 106' of the door seal 106 (here, the lowermost part of the door seal 106), as shown by the arrows in Figure 1 .
  • a second threshold (which may or may not be the same threshold used to trigger the directing of water at the door seal 106)
  • water is stopped from being directed at the door seal 106 as the door seal 106 is deemed as having been sufficiently cooled. In that case, it is not necessary to continue directing water at the door seal 106.
  • water is directed at the door seal 106 for a predetermined period of time. For example, water may be directed at the door seal 106 for a minimum of one minute.
  • the first threshold for triggering the directing of water and the second threshold for stopping the directing of water may be the same. That is, if the door seal is heated above a threshold, water is directed at the door seal until the door seal is cooled to below that same threshold.
  • the two thresholds are different. That is, if the door seal is heated above a first threshold, water is directed at the door seal until the door seal is cooled to below a second, different threshold. This helps to prevent persistent or frequent switching between the directing of water and the stopping of directing water at the door seal.
  • the first and second thresholds for starting and stopping directing of water at the door seal 106 may be programmed by the manufacturer of the washing machine 100 or an end-user of the washing machine 100.
  • the predetermined period of time may be programmed by the manufacturer of the washing machine 100 or an end-user of the washing machine 100.
  • the washing machine 100 may comprise a gas detector 114 for detecting a gas emitted by the door seal 106 as the door seal 106 heats.
  • the gas detector may generally be, for example, located within the body of the washing machine 100.
  • the gas detector 114 may be any suitable detector for detecting gas including for example an electrochemical gas detector, an infrared imager, a semiconductor sensor, an ultrasonic gas detector, or a holographic gas sensor.
  • detecting the heating of the door seal 106 comprises detecting a gas emitted by the door seal 106 as the door seal 106 heats.
  • the gas emitted by the door seal 106 may be detected by the gas detector 114.
  • only the heating of the door seal 106 being above the first threshold is required in order to direct water at the door seal.
  • both the heating of the door seal 106 being above the first threshold and the presence of gas are required in order to direct water at the door seal 106.
  • only the presence of gas is required in order to direct water at the door seal 106. That is, the presence of gas (or an amount of gas above a threshold) is taken by the controller 112 to be indicative of the door seal 106 having been heated above the first threshold.
  • the heat detecting arrangement 108 comprises the gas detector 114. That is, the gas detector 114 is used to determine that the door seal has been heated. For example, the presence of a particular gas or a particular quantity of a gas indicates heating of the door seal 106.
  • water is directed at the door seal 106 until the presence of gas is no longer detected or until the level of detected gas is below a predetermined level.
  • the controller 112 is operatively coupled to the gas detector 114 in order to receive an indication of the presence of gas and/or the particular gas detected by the gas detector 114.
  • the gas detector 114 may be configured to continuously monitor for gas. This is advantageous as it enables instantaneous detection of gas being emitted and therefore that the door seal 106 has heated up.
  • the gas detector 114 may be configured to periodically monitor for gas being emitted and therefore that the door seal 106 has heated up.
  • the gas detector 114 may be configured to detect gas inside of the drum 104. In additional or alternative examples, the gas detector 114 may be configured to detect gas outside of the drum 104 but within the body of the washing machine 100.
  • the heat detecting arrangement 108 may be any arrangement for directly detecting heat, including thermometers, thermistors (e.g. negative temperature coefficient thermistors), resistance temperature detectors, thermocouples, semiconductor-based sensors, infrared sensors, optical sensors, etc.
  • the heat detecting arrangement 108 may be configured to continuously detect the temperature of the door seal 106. This is advantageous as it enables instantaneous measurement of the temperature of the door seal 106.
  • the temperature detecting arrangement 108 may be configured to periodically detect the temperature of the door seal 106. It will be appreciated that in some scenarios one or more of the above examples may not be suitable. If a thermometer or the like is used, then a threshold temperature may be used.
  • the threshold temperature may be programmed by the manufacturer of the washing machine 100 or an end-user of the washing machine 100.
  • the threshold temperature may be programmed to be 50°C or 60°C or so. It will be appreciated that the threshold temperature may be programmed to be any suitable value.
  • the washing machine 100 may comprise a water box 116 in fluid communication with the water-directing arrangement 110 to supply water to the water-directing arrangement 110.
  • the water supply from the water box 116 may flow through the one or more cooling pipes 111.
  • the water box 116 is arranged to receive rinsing water which has rinsed laundry items during operation of the washing machine 100.
  • rinsing water may be drained into the water box 116 during a rinsing operation.
  • rinsing water may be drained into the water box 116 during a draining operation.
  • rinsing water may be drained into the water box 116 during a spinning cycle.
  • the washing machine 100 may comprise a first pump 118 constructed and arranged to extract water from the drum 104 and pump water into the water box 116 for use in cooling the door seal 106.
  • rinsing water may drain directly from the drum 104 to the water box 116 without the need for the first pump 118.
  • the washing machine 100 may comprise a second pump 120 constructed and arranged to extract water from the water box 116 and pump water through the water-directing arrangement 110 for use in cooling the door seal 106.
  • the one or more cooling pipes 111 may each be connected to the second pump 120.
  • the second pump 120 may be controlled by the controller 112 to vary the pressure of the water throughout the water-directing arrangement 110.
  • the washing machine 100 may comprise a laundry detecting arrangement (not shown) for detecting a laundry item as being lodged in the door seal 106.
  • the controller 112 is operatively coupled to the laundry detecting arrangement in order to receive an indication of the presence of a laundry item lodged in the door seal 106.
  • the laundry detecting arrangement may be for example an optical sensor.
  • the optical sensor can optically monitor the door seal 106 to detect when an item is lodged in the door seal 106, e.g. a laundry item has remained in the same place for a certain amount of time.
  • the laundry detecting arrangement may be a contact sensor.
  • the contact sensor may detect that a laundry item has remained in contact with the same point of the door seal 106 for a certain amount of time.
  • the laundry detecting arrangement may be a weight sensor.
  • the weight sensor may detect the presence of a laundry item from the increase in weight of the door seal 106 for a certain amount of time.
  • the water-directing arrangement 110 may be configured to direct water at the laundry item to dislodge the laundry item from the door seal 106.
  • one or more cooling pipes 111 may be chosen to direct water at the detected position of the lodged laundry item.
  • the controller 112. the water pressure of the directed water may be increased to ensure the laundry item is dislodged from the door seal 106.
  • all of the one or more cooling pipes 111 may be selected by the controller 112 to emit water in order to dislodge the laundry item.
  • the water-directing arrangement 110 and/or the one or more cooling pipes may be movable to direct water at the lodged laundry item.
  • the water-directing arrangement may be controlled by the controller 112.
  • the controller 112 may use the information provided by the laundry detecting arrangement to aim the water-directing arrangement 110 at the lodged item of laundry.
  • the water-directing arrangement 110 may comprise a moveable nozzle.
  • controller 112, processor or processing system or circuitry referred to herein may in practice be provided by a single chip or integrated circuit or plural chips or integrated circuits, optionally provided as a chipset, an application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), digital signal processor (DSP), graphics processing units (GPUs), etc.
  • the chip or chips may comprise circuitry (as well as possibly firmware) for embodying at least one or more of a data processor or processors, a digital signal processor or processors, baseband circuitry and radio frequency circuitry, which are configurable so as to operate in accordance with the exemplary embodiments.
  • the exemplary embodiments may be implemented at least in part by computer software stored in (non-transitory) memory and executable by the processor, or by hardware, or by a combination of tangibly stored software and hardware (and tangibly stored firmware).

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

Claims (12)

  1. Verfahren zum Kühlen einer Türdichtung (106) einer Waschmaschine (100), wobei das Verfahren aufweist:
    Erfassen einer Erwärmung der Türdichtung (106); und
    wenn die erfasste Erwärmung anzeigt, dass eine Temperatur der Türdichtung (106) über einem Schwellenwert liegt, Zuführen von Wasser zu der Türdichtung (106), um die Türdichtung (106) zu kühlen.
  2. Verfahren gemäß Anspruch 1, das aufweist:
    nach dem Zuführen von Wasser an die Türdichtung (106), Unterbrechen des Zuführens von Wasser an die Türdichtung (106), wenn die erfasste Erwärmung anzeigt, dass die Temperatur der Türdichtung (106) unter einem Schwellenwert liegt.
  3. Verfahren gemäß Anspruch 1 oder Anspruch 2, wobei
    das Erfassen der Erwärmung der Türdichtung (106) das Erfassen eines Gases aufweist, das von der Türdichtung (106) abgegeben wird, wenn sich die Türdichtung (106) erwärmt.
  4. Verfahren gemäß einem der Ansprüche 1 bis 3, wobei das Wasser von einem oder mehreren Kühlrohren (111) zugeführt wird und wobei das Wasser dem einen oder den mehreren Kühlrohren (111) von einem Wasserkasten (116) der Waschmaschine (100) zugeführt wird.
  5. Verfahren gemäß Anspruch 4, wobei der Wasserkasten (116) Spülwasser aufnimmt, das während des Betriebs der Waschmaschine (100) Wäschestücke ausgespült hat.
  6. Verfahren gemäß einem der Ansprüche 1 bis 5, das aufweist:
    Erkennen eines Wäschestücks, das sich in der Türdichtung (106) befindet; und
    Zuführen von Wasser auf das Wäschestück, um das Wäschestück aus der Türdichtung (106) zu lösen.
  7. Eine Waschmaschine (100), die aufweist:
    eine Türdichtung (106);
    eine Anordnung (108, 114) zum Erfassen einer Erwärmung der Türdichtung (106)
    eine Anordnung (110, 111) zum Zuführen von Wasser an die Türdichtung (106); und
    eine Steuerung (112), die so konfiguriert ist, dass sie das Zuführen von Wasser an die Türdichtung (106) steuert, um die Türdichtung (106) zu kühlen, wenn die erfasste Erwärmung anzeigt, dass eine Temperatur der Türdichtung (106) über einem Schwellenwert liegt.
  8. Eine Waschmaschine (100) gemäß Anspruch 7, wobei:
    die Steuerung (112) so konfiguriert ist, dass sie das Zuführen von Wasser an die Türdichtung (106) stoppt, wenn nach dem Zuführen von Wasser an die Türdichtung (106) die erfasste Erwärmung anzeigt, dass die Temperatur der Türdichtung (106) unter einem Schwellenwert liegt.
  9. Waschmaschine (100) gemäß Anspruch 7 oder Anspruch 8, aufweisend einen Gasdetektor (114) zum Erfassen eines Gases, das von der Türdichtung (106) abgegeben wird, wenn sich die Türdichtung (106) erwärmt.
  10. Waschmaschine (100) gemäß einem der Ansprüche 7 bis 9,
    wobei die Anordnung (110, 111) zum Zuführen von Wasser an die Türdichtung (106) ein oder mehrere Kühlrohre (111) zum Zuführen von Wasser an die Türdichtung (106) aufweist; und einen Wasserkasten (116) in Fluidverbindung mit dem einen oder den mehreren Kühlrohren (111) aufweist, um dem einen oder den mehreren Kühlrohren (111) Wasser aus dem Wasserkasten (116) zuzuführen.
  11. Waschmaschine (100) gemäß Anspruch 10, wobei der Wasserkasten (116) konfiguriert ist, um Spülwasser aufzunehmen, das Wäschestücke während des Betriebs der Waschmaschine (100) gespült hat.
  12. Waschmaschine (100) gemäß einem der Ansprüche 7 bis 11, aufweisend:
    eine Anordnung zum Erkennen eines Wäschestücks, das in der Türdichtung (106) steckt, wobei die Anordnung (110, 111) zum Zuführen von Wasser zu der Türdichtung (106) so konfiguriert ist, dass sie Wasser zu dem Wäschestück führt, um das Wäschestück aus der Türdichtung (106) zu lösen.
EP17193890.5A 2017-09-28 2017-09-28 Waschmaschine und verfahren zum kühlen einer waschmaschinentürdichtung Active EP3461942B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP17193890.5A EP3461942B1 (de) 2017-09-28 2017-09-28 Waschmaschine und verfahren zum kühlen einer waschmaschinentürdichtung
TR2017/14660A TR201714660A2 (de) 2017-09-28 2017-09-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17193890.5A EP3461942B1 (de) 2017-09-28 2017-09-28 Waschmaschine und verfahren zum kühlen einer waschmaschinentürdichtung

Publications (2)

Publication Number Publication Date
EP3461942A1 EP3461942A1 (de) 2019-04-03
EP3461942B1 true EP3461942B1 (de) 2021-04-28

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EP17193890.5A Active EP3461942B1 (de) 2017-09-28 2017-09-28 Waschmaschine und verfahren zum kühlen einer waschmaschinentürdichtung

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EP (1) EP3461942B1 (de)
TR (1) TR201714660A2 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19908805A1 (de) * 1999-03-01 2000-09-07 Bsh Bosch Siemens Hausgeraete Verfahren zum Betreiben einer Waschmaschine sowie zur Durchführung des Verfahrens geeignete Waschmaschine
US6272770B1 (en) * 1999-12-15 2001-08-14 American Dryer Corporation Washer/dryer combination with cold water and vacuum
JP3919798B2 (ja) * 2005-06-28 2007-05-30 シャープ株式会社 洗濯乾燥機

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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Publication number Publication date
EP3461942A1 (de) 2019-04-03
TR201714660A2 (de) 2019-04-22

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