EP3495547B1 - Pumpe für eine waschmaschine, waschmaschine und verfahren - Google Patents

Pumpe für eine waschmaschine, waschmaschine und verfahren Download PDF

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Publication number
EP3495547B1
EP3495547B1 EP17206526.0A EP17206526A EP3495547B1 EP 3495547 B1 EP3495547 B1 EP 3495547B1 EP 17206526 A EP17206526 A EP 17206526A EP 3495547 B1 EP3495547 B1 EP 3495547B1
Authority
EP
European Patent Office
Prior art keywords
pump
movable element
washing machine
motor
water
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
EP17206526.0A
Other languages
English (en)
French (fr)
Other versions
EP3495547A1 (de
Inventor
Yusuf ORULLUOGLU
Tayfun YILMAZ
Ugur ERBASOL
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 EP17206526.0A priority Critical patent/EP3495547B1/de
Priority to TR2017/22467A priority patent/TR201722467A2/tr
Publication of EP3495547A1 publication Critical patent/EP3495547A1/de
Application granted granted Critical
Publication of EP3495547B1 publication Critical patent/EP3495547B1/de
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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 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation arrangements
    • D06F39/085—Arrangements or adaptations 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
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/42—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to filters or 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/08—Draining of washing liquids

Definitions

  • the present disclosure relates to a pump for a washing machine.
  • the present disclosure also relates to a washing machine comprising such a pump.
  • the present disclosure also relates to a method of controlling such a pump.
  • Washing machines are used for washing washable items, including garments such as clothes.
  • a washing machine comprises a water pump that is used for draining waste water from a drum of the washing machine.
  • EP2055958A2 discloses a water-guiding household device with a pump with a valve function.
  • the device may be incorporated in a dishwasher or washing machine, for example.
  • US2014/000664A1 discloses a washing apparatus having a drain pump.
  • a pump for a washing machine comprising: a water inlet and a water outlet; a sensor; and a movable element constructed and arranged to be actuated when the sensor indicates a blocked material in the pump, actuation of the movable element configured to create a vacuum for dislodging the blocked material.
  • the movable element is connected to a motor, driving of the motor configured to cause a reciprocating movement of the movable element.
  • the motor being selectively drivable in a first direction and a second direction opposite to the first direction, so as to provide the reciprocating movement of the movable element.
  • the movable element connected to the motor via one or more cams, the one or more cams constructed and arranged to cause the reciprocating movement of the movable element when the motor is driven.
  • the movable element located in a channel, the channel in fluid communication with an interior of the pump.
  • the movable element is cone shaped.
  • the pump comprises a pumping mechanism for drawing water from a drum of the washing machine to the pump, the pumping mechanism arranged to be de-activated when the movable element is actuated.
  • the senor comprises a flow meter.
  • the pump is configured to actuate the movable element when a water flow rate in the pump falls below a threshold value.
  • a washing machine comprising a pump according to any of the first aspects.
  • a method of operating a pump of a washing machine comprising: in response to receiving a signal from a sensor in the pump indicative of a blocked material in the pump, causing actuation of a movable element so as to create a vacuum for dislodging the blocked material.
  • the method comprises causing a motor to be driven so as to cause the actuation of the movable element.
  • the method comprises causing the actuation of the movable element in response to determining that a water flow rate in the pump has fallen below a threshold value.
  • the method comprises de-activating a pumping mechanism of the pump when the movable element is actuated.
  • the method comprises re-activating the pump when a water flow rate in the pump rises above a threshold value.
  • Washing machines typically comprise a rotatable drum for rotating items (e.g. garments or clothes) placed in the drum.
  • a washing machine comprises a pump that is used for draining water from the drum.
  • This water may be waste water, e.g. water that has been used in the drum when washing the items.
  • the waste water may comprise materials or debris from the items being washed e.g. fabric, lint, foodstuffs etc.
  • this material can block the drain pump. In such a situation the washing machine cannot drain the waste water, and the machine may cease working at least until the pump has been cleaned and/or serviced. Accordingly the pump may need to be cleaned periodically in order for the washing machine to properly function.
  • FIG. 1 schematically shows a washing machine 102 according to an example.
  • the washing machine 102 comprises a main body portion 104 and a drum 106 which is arranged to hold one or more garments or items of a washing load to be washed and/or dried. Washing detergent and/or fabric softener may also be placed directly in to the drum 106. Alternatively washing detergent and/or fabric softener may be placed in to a tray or dispenser 112 arranged for this purpose. In this example a dispenser 112 is arranged to hold washing detergent, and a dispenser 114 is arranged to hold fabric softener.
  • a user interface 108 is provided which enables a user to select one or more washing and/or drying parameters and/or settings e.g. duration, temperature etc.
  • a display 110 is also provided which outputs information to a user of the washing machine.
  • information displayed on the display 110 may be information regarding options selected via user interface 108, and/or information regarding a washing cycle in progress such as time remaining etc.
  • the washing machine 102 also comprises a controller shown schematically at 130.
  • the controller 130 comprises a memory and a processor.
  • the controller 130 is configured and arranged for controlling operations of the washing machine 102.
  • the washing machine 102 also comprises a suitable power connection shown schematically at 120, enabling the washing machine 102 to be connected to an electricity supply such as mains electricity.
  • the washing machine 102 also comprises a suitable water inlet shown schematically at 122, and a suitable water outlet shown schematically at 124.
  • the water inlet 122 and water outlet 124 may for example enable connection to a mains water supply.
  • the washing machine 102 also comprises a drain pump, shown schematically at 126, for draining water from the drum 106.
  • FIG 2 shows a pump 226 (e.g. a drain pump) of a washing machine in more detail (e.g. equivalent to drain pump of 126 in Figure 1 ).
  • the pump 226 comprises a main body portion 227.
  • the pump 226 comprises an inlet 228 and an outlet 229.
  • Water is schematically shown at 234 flowing in to inlet 228, and water is schematically shown at 238 flowing out of outlet 229.
  • water may flow to inlet 228 from a drum of the washing machine.
  • Water may flow from outlet 229 of the pump to a main outlet of the washing machine (e.g. the outlet 124 in Figure 1 ).
  • the water pump 226 comprises an interior 225 defining a water flow path between the inlet 228 and outlet 229. Water is schematically shown at 236 flowing in the flow path.
  • a pumping unit or pumping mechanism is schematically shown at 232.
  • the pumping mechanism 232 causes water to be drawn from the drum of the machine to the inlet 228 of the pump 226, and then out of the outlet 229.
  • the pumping mechanism 232 may comprise, for example, an impeller.
  • the pumping mechanism 232 is driven by a motor 260.
  • material e.g. lint
  • material may become blocked or stuck in the pump 226. This may reduce the effectiveness of the pump or cause the pump to malfunction.
  • blocked material is schematically shown at 250.
  • the material 250 may for example become stuck to pumping mechanism 232, or stuck to another surface or component in the pump (e.g. a filter), or stuck in the inlet 228 or outlet 229.
  • the blocked material 250 may reduce the flow rate of water through the pump 226, and may even completely block the flow of water.
  • a sensor is schematically shown at 240.
  • the sensor 240 is constructed and arranged to determine when there is blocked material in the pump 226.
  • the sensor 240 is configured to monitor a flow rate of water in the pump 226.
  • the sensor 240 may therefore in some examples be a flow meter.
  • the sensor 240 may be an optical sensor or camera configured to detect blocked material.
  • a controller is schematically shown at 230.
  • the controller 230 comprises a memory 231 and a processor 233.
  • the controller 230 may comprise a microcontroller unit (MCU).
  • the controller 230 may, in some examples, control only operations of the pump 226. In other words in some examples the controller 230 is comprised in pump 226. In an alternative example the controller 230 may be part of the washing machine, and also control other operations of the washing machine. For example controller 230 may be equivalent to controller 130 of Figure 1 .
  • control of pump 226 is distributed between a controller in the pump and a main controller of the washing machine.
  • a movable element is schematically shown at 242.
  • the movable element 242 is housed in a channel 243.
  • the channel 243 is in fluid communication with interior 225 of pump 226.
  • the movable element 242 is connected to motor 246 via connection or linkage 244.
  • the connection 244 is connected to a gear or gear train of the motor 246.
  • the connection 244 is constructed and arranged to convert rotational movement of motor 246 in to linear movement of movable element 242. In examples this enables the movable element 242 to reciprocate back and forth in channel 243 i.e. in the directions of arrows A and B.
  • the reciprocation is caused by selectively driving the motor 246 in forward and reverse directions.
  • the reciprocation is enabled by a mechanical arrangement e.g. one or more cams.
  • a longitudinal axis of channel 243 is substantially perpendicular to a longitudinal axis of outlet 229.
  • the channel 242 is located adjacent to, and in fluid communication with but separate from interior 225 of pump 226. Therefore in some examples the movable element does not enter the interior 225, even when at a full extent of its reciprocation in the direction of arrow A. Therefore there may be considered to be a boundary 262 between the channel 243 and the interior 225 of the pump 226, the movable element arranged so that it does not cross the boundary 262.
  • the channel 243 is in fluid communication with the interior 225, and therefore this boundary 262 may be considered a non-physical or notional boundary. Accordingly, in normal operation of the pump 226 when there is no blockage, the movable element does not interfere with or restrict flow of water in the interior of the pump 226.
  • the movable element is cone shaped or comprises a truncated cone.
  • the cone shaped movable element 242 comprises a long edge or base 245, and a short edge or apex 247.
  • the base or long edge 245 faces the interior 225 of the pump 226.
  • the apex or short edge 247 is connected to the connection 244.
  • a periphery of the base 245 of the movable element 242 is a tight fit in the channel 243.
  • the movable element 242 comprises an airtight and/or watertight seal against an inner surface of the channel 243.
  • the movable element 242 comprises a seal or gasket to provide the airtight and/or watertight seal.
  • the controller 230 is in communication with sensor 240 and motor 246. By receiving information from sensor 240 (e.g. information of flow rate), then the controller 230 can determine when there is blocked material in the pump 226. For example, it may be determined that there is a blockage in the pump 226 when the flow rate falls below a threshold level or value.
  • information from sensor 240 e.g. information of flow rate
  • the controller 230 can determine when there is blocked material in the pump 226. For example, it may be determined that there is a blockage in the pump 226 when the flow rate falls below a threshold level or value.
  • the controller activates the motor 246 so as to actuate the movable element 242.
  • the movable element 242 As the movable element 242 is reciprocated back and forth in the channel 243, when moving in direction A the pressure in interior 225 increases, and when moving in direction B the pressure in interior 225 decreases. This causes a vacuum to be formed in the channel 243 and/or interior 225 of pump 226. To this end the movable element 242 may be considered part of a vacuum pump.
  • the created vacuum has an effect of attracting the stuck or blocked material 250 so as to dislodge it from where it is stuck. The dislodged material may then pass out of the outlet 229 and away to mains drainage.
  • the flow rate in the pump will increase.
  • actuation of the movable element 242 can be stopped or de-activated, for example by switching off motor 246 or placing the motor 246 in an idle state.
  • the motor 260 which drives the pumping mechanism 232 may be considered a first motor, and the motor 246 which drives the movable element 242 may be considered a second motor.
  • Figure 3 schematically shows a method according to an example, which is described in conjunction with Figure 2 .
  • the process proceeds to S3 where the first motor, i.e. motor 260 driving the pumping mechanism 232, is stopped or placed in an idle state.
  • the controller 230 may cause this de-activation of the motor 260.
  • the second motor i.e. motor 246 driving the movable element 242
  • the controller 230 may cause this activation of the motor 260.
  • S4 occurs before S3. In some examples S3 and S4 may take place simultaneously.
  • the controller 230 determines whether the pump is blocked. In other words it is determined whether actuation of the movable element 242 has caused dislodging of the blocked material. Again, this determination may be made using information from sensor 240. For example where the sensor 240 is a flow-meter, it may be determined that the pump 226 is blocked when the flow rate falls below a threshold value.
  • Step S5 may occur periodically (e.g. every 30 seconds), or continuously.
  • the process proceeds to S7. Determining that the pump is no longer blocked may be in response to the controller 230 receiving an appropriate signal from the sensor 240. For example where the sensor 240 is a flow-meter, it may be determined that the pump 226 is not blocked when the flow rate is at or above a threshold value.
  • the second motor 246 controlling the movable element 242 is stopped or placed in an idle state, so as to stop movement of movable element 242.
  • the first motor 260 is started or moved from an idle state to an active state, so as to re-start operation of the pumping mechanism 232.
  • S8 occurs before S7. In some examples S7 and S8 occur simultaneously.
  • 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).
  • data storage for storing data, such as memory. This may be provided by a single device or by plural devices. Suitable devices include for example a hard disk and non-volatile semiconductor memory.
  • the invention also extends to computer programs, particularly computer programs on or in a carrier, adapted for putting the invention into practice.
  • the program may be in the form of non-transitory source code, object code, a code intermediate source and object code such as in partially compiled form, or in any other non-transitory form suitable for use in the implementation of processes according to the invention.
  • the carrier may be any entity or device capable of carrying the program.
  • the carrier may comprise a storage medium, such as a solid-state drive (SSD) or other semiconductor-based RAM; a ROM, for example a CD ROM or a semiconductor ROM; a magnetic recording medium, for example a floppy disk or hard disk; optical memory devices in general; etc.
  • SSD solid-state drive
  • ROM read-only memory
  • magnetic recording medium for example a floppy disk or hard disk
  • optical memory devices in general etc.

Claims (15)

  1. Pumpe (226) für eine Waschmaschine (102), aufweisend:
    einen Wassereinlass (228), einen Wasserauslass (229) und einen Sensor (240), dadurch gekennzeichnet, dass sie ferner aufweist:
    ein bewegbares Element (242), das ausgestaltet und angeordnet ist, um betätigt zu werden, wenn der Sensor ein blockiertes Material (250) in der Pumpe anzeigt, wobei die Betätigung des bewegbaren Elements (242) ausgestaltet ist, um ein Vakuum zum Entfernen des blockierten Materials (250) zu erzeugen.
  2. Pumpe (226) nach Anspruch 1, bei welcher das bewegbare Element (242) mit einem Motor (246) verbunden ist, wobei das Antreiben des Motors (246) ausgestaltet ist, um eine Hin- und Herbewegung des bewegbaren Elements (242) zu bewirken.
  3. Pumpe (226) nach Anspruch 2, wobei der Motor (246) selektiv in einer ersten Richtung und einer zweiten Richtung entgegengesetzt zur ersten Richtung antreibbar ist, um die Hin- und Herbewegung des bewegbaren Elements (242) bereitzustellen.
  4. Pumpe (226) nach Anspruch 2, bei welcher das bewegbare Element (242) über einen oder mehrere Nocken mit dem Motor (246) verbunden ist, wobei die ein oder mehreren Nocken ausgebildet und angeordnet sind, um die Hin- und Herbewegung des bewegbaren Elements (242) zu bewirken, wenn der Motor angetrieben wird.
  5. Pumpe (226) nach einem der Ansprüche 1 bis 4, bei welcher das bewegbare Element (242) in einem Kanal (243) angeordnet ist und der Kanal (243) mit einem Inneren (225) der Pumpe (226) in Fluidverbindung steht.
  6. Pumpe (226) nach einem der Ansprüche 1 bis 5, bei welcher das bewegbare Element (242) kegelförmig ist.
  7. Pumpe (226) nach einem der Ansprüche 1 bis 6, bei welcher die Pumpe (226) einen Pumpmechanismus (232) zum Ziehen von Wasser aus einer Trommel (106) der Waschmaschine (102) zur Pumpe (226) aufweist, wobei der Pumpmechanismus (232) eingerichtet ist, um deaktiviert zu werden, wenn das bewegbare Element (242) betätigt wird.
  8. Pumpe (226) nach einem der Ansprüche 1 bis 7, bei welcher der Sensor (240) einen Durchflussmesser aufweist.
  9. Pumpe (226) nach Anspruch 8, wobei die Pumpe (226) ausgestaltet ist, um das bewegbare Element (242) zu betätigen, wenn ein Wasserdurchfluss in der Pumpe (226) unter einen Schwellenwert fällt.
  10. Waschmaschine (102) mit einer Pumpe (226) nach einem der Ansprüche 1 bis 9.
  11. Verfahren zum Betreiben einer Pumpe (226) einer Waschmaschine, wobei die Pumpe (226) einen Wassereinlass und einen Wasserauslass aufweist, dadurch gekennzeichnet, dass das Verfahren aufweist:
    als Reaktion auf ein Empfangen eines Signals von einem Sensor (240) in der Pumpe (226), das ein blockiertes Material in der Pumpe (226) anzeigt, Bewirken einer Betätigung eines bewegbaren Elements (242), um ein Vakuum zum Entfernen des blockierten Materials zu erzeugen.
  12. Verfahren nach Anspruch 11, ferner aufweisend ein Bewirken, dass ein Motor (246) angetrieben wird, um die Betätigung des bewegbaren Elements (242) zu bewirken.
  13. Verfahren nach Anspruch 11 oder Anspruch 12, ferner aufweisend ein Bewirken der Betätigung des bewegbaren Elements (242) als Reaktion auf ein Bestimmen, dass ein Wasserdurchfluss in der Pumpe (226) unter einen Schwellenwert gefallen ist.
  14. Verfahren nach einem der Ansprüche 11 bis 13, ferner aufweisend ein Deaktivieren eines Pumpmechanismus (232) der Pumpe, wenn das bewegbare Element (242) betätigt wird.
  15. Verfahren nach Anspruch 14, ferner aufweisend ein Wiederaktivieren der Pumpe (226), wenn ein Wasserdurchfluss in der Pumpe über einen Schwellenwert steigt.
EP17206526.0A 2017-12-11 2017-12-11 Pumpe für eine waschmaschine, waschmaschine und verfahren Active EP3495547B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP17206526.0A EP3495547B1 (de) 2017-12-11 2017-12-11 Pumpe für eine waschmaschine, waschmaschine und verfahren
TR2017/22467A TR201722467A2 (tr) 2017-12-11 2017-12-28 Bi̇r çamaşir maki̇nesi̇ i̇çi̇n pompa, çamaşir maki̇nesi̇ ve yöntem

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17206526.0A EP3495547B1 (de) 2017-12-11 2017-12-11 Pumpe für eine waschmaschine, waschmaschine und verfahren

Publications (2)

Publication Number Publication Date
EP3495547A1 EP3495547A1 (de) 2019-06-12
EP3495547B1 true EP3495547B1 (de) 2020-08-26

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Application Number Title Priority Date Filing Date
EP17206526.0A Active EP3495547B1 (de) 2017-12-11 2017-12-11 Pumpe für eine waschmaschine, waschmaschine und verfahren

Country Status (2)

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EP (1) EP3495547B1 (de)
TR (1) TR201722467A2 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT223506Z2 (it) * 1990-02-09 1995-07-20 Zanussi A Spa Industrie Lavatrice con pompa di circolazione dell'acuqa di tipo centrifugo
DE102007052082A1 (de) * 2007-10-31 2009-05-07 BSH Bosch und Siemens Hausgeräte GmbH Wasserführendes Haushaltsgerät mit einer Pumpe mit Ventilfunktion
CN203430799U (zh) * 2012-06-28 2014-02-12 德昌电机(深圳)有限公司 排水泵及清洗装置

Non-Patent Citations (1)

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

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EP3495547A1 (de) 2019-06-12

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