EP4091521A1 - Wasserführendes haushaltsgerät und verfahren zum steuern eines wasserführenden haushaltsgeräts - Google Patents

Wasserführendes haushaltsgerät und verfahren zum steuern eines wasserführenden haushaltsgeräts Download PDF

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Publication number
EP4091521A1
EP4091521A1 EP22169983.8A EP22169983A EP4091521A1 EP 4091521 A1 EP4091521 A1 EP 4091521A1 EP 22169983 A EP22169983 A EP 22169983A EP 4091521 A1 EP4091521 A1 EP 4091521A1
Authority
EP
European Patent Office
Prior art keywords
water
liquid
housing
household appliance
bearing household
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.)
Pending
Application number
EP22169983.8A
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German (de)
English (en)
French (fr)
Inventor
Erik Maurer
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
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 BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP4091521A1 publication Critical patent/EP4091521A1/de
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0049—Detection or prevention of malfunction, including accident prevention
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/421—Safety arrangements for preventing water damage
    • A47L15/4212—Detection of water leaks; Collection of leaked water, e.g. in the casing
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4297—Arrangements for detecting or measuring the condition of the washing water, e.g. turbidity
    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/081—Safety arrangements for preventing water damage
    • 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
    • D06F39/088—Liquid supply arrangements
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/30—Variation of electrical, magnetical or optical quantities
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/01—Water supply, e.g. opening or closure of the water inlet valve
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/26—Indication or alarm to the controlling device or to the user
    • 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
    • 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
    • D06F2103/44—Current or voltage
    • 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
    • D06F2105/02—Water supply
    • 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
    • D06F2105/58—Indications or alarms to the control system or to the user
    • 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

Definitions

  • the present invention relates to a water-bearing household appliance and a method for controlling a water-bearing household appliance.
  • Causes of water in the area of the base pan can be a leak within water-carrying assemblies in the water-carrying household appliance and/or a leaky internal water-carrying supply hose.
  • the object is achieved by a water-bearing household appliance with the features of claim 1 and a method for controlling a water-bearing household appliance with the features of claim 10.
  • a water-bearing household appliance comprising a housing with a treatment chamber accommodated therein, a water supply which is designed to supply water to the treatment chamber, a shut-off device which is designed to prevent the water supply, at least one measuring device that is designed to detect a liquid outside the housing and to output a signal, and a control unit that is designed to control the shut-off device and/or to output a notification based on the signal from the measuring device.
  • the present invention provides the effect that an existing shut-off device is not only controlled based on liquid detected inside the water-bearing household appliance, but also based on liquid detected outside of the water-bearing household appliance.
  • the shut-off device can be an aquastop system, for example, which is arranged on a water supply to the water-bearing household appliance.
  • the shut-off device can be controlled based on information about a presence of liquid outside and inside the housing.
  • Liquid outside the housing of the water-bearing household appliance can occur, for example, when a liquid runs out of an opening in the water-bearing household appliance and flows to the ground outside the housing. Furthermore, liquid can escape from the water supply, in particular between a connection of the water supply and the shut-off device.
  • a sealing element O-ring, flat seal, etc.
  • an intermediate hose between a water connection e.g. a water tap
  • the control unit can also be designed to interrupt the entire water supply in such a case. In the context of home automation, it is also conceivable that the Control unit can control a central water shut-off valve and thus can interrupt a water supply.
  • the water-bearing domestic appliance can be a laundry treatment appliance, a dishwasher or a water-bearing kitchen appliance.
  • the housing can represent a system boundary between an interior space of the water-bearing domestic appliance and a space outside the housing.
  • the water-bearing household appliance can have an operating position in which it is usually operated. In the following, above and below always refers to a division of operations of the water-bearing household appliance.
  • a closed floor pan can be provided inside the housing.
  • a local low point can be arranged in the floor pan, in which a sensor device monitors whether or not liquid is present in the low point. It can thus be monitored whether liquid is accumulating in the floor pan inside the water-bearing household appliance.
  • the treatment space can be, for example, a tub for a laundry treatment device or the washing space for dishes in a dishwasher. Furthermore, the treatment space can be a boiler of a water-bearing kitchen appliance, in which the water supplied is heated.
  • the water supply can be, for example, a hose that leads from a water tap or a wall connection to the water-bearing household appliance.
  • the water supply can also be a rigid pipe.
  • the water supply may consist of a flexible inner hose covered by an outer flexible hose.
  • the outer tube can encase the inner tube concentrically.
  • the outer hose can be watertight, so that if the inner hose leaks, it can completely catch the water and, for example, can feed it to the interior of the housing.
  • the shut-off device can be an aquastop system which has an electromagnetic valve which can shut off the water supply.
  • the shut-off device can be arranged in the water supply.
  • the shut-off device is preferably arranged directly on a wall connection (for example a water tap) and the water supply extends from the shut-off device to the housing of the water-bearing household appliance. It can thus be ensured that by actuating the shut-off device, further inflow of water to the water supply is prevented.
  • the inner hose of the water supply can be connected to other water-carrying components within the water-carrying household appliance, whereas the outer hose of the water supply can be connected to the interior of the housing, so that water can flow from the outer hose directly into the housing. It can thus be ensured that in the event of a leak in the inner hose, the water escaping from the leak can be fed through the outer hose to the floor pan in the housing, so that the sensor located there can detect the water and correspondingly control the shut-off device in order to turn off the water supply.
  • the measuring device can, for example, comprise a float switch within the housing.
  • the measuring device can detect liquid outside the housing by supplying the liquid outside the housing to the liquid sensor inside the housing.
  • the measuring device can have a liquid sensor outside the housing, which can thus directly detect liquid outside the housing.
  • the measuring device can therefore have at least one moisture sensor in order to determine that moisture is present outside the housing.
  • the measuring device has at least two moisture sensors, one of which is arranged inside the housing and one outside of the housing. Thus, it can be reliably determined whether liquid has leaked due to leakage inside the case or outside the case. A notification or a control signal can be issued accordingly.
  • the control unit can include a processor that can receive signals, process them and issue control commands.
  • the control unit already provided in the household appliance can be used as the control unit.
  • the humidity sensor can communicate with the control unit via cable or radio.
  • the measuring device can include a moisture sensor which is located outside the housing and is connected to the control unit via wireless communication (e.g. WLAN, near field communication, Bluetooth, etc.).
  • the measuring device can have an energy source such as a battery, which supplies the moisture sensor with electricity.
  • a possibly existing Aquastop system of a water-bearing household appliance which can detect a leak inside the household appliance, can be expanded by a further functionality, since the measuring device can also detect the occurrence of liquid outside the housing. Irrespective of where a liquid is detected, the control unit can actively control the shut-off device and/or output a notification after liquid has been detected.
  • the notification can be issued to the user via WLAN or smart home applications, for example.
  • a user can receive information on their smartphone that the measuring device has detected liquid. This information may also include where this liquid was detected (ie, either inside the housing or outside the housing). Thus, the user can take adequate countermeasures.
  • the control unit can control the shut-off device in such a way that no further water is supplied to the water-bearing household appliance.
  • the present invention thus provides a possibility through the measuring device in addition to a known Aquastop system to provide comprehensive protection against unwanted water leaks in water-carrying household appliances.
  • This is achieved by not only installing a sensor inside the machine for monitoring, but also including the area around the water-bearing household appliance in the monitoring.
  • This can be achieved either by placing an additional humidity sensor outside the housing and connecting directly to the control unit of the water-bearing household appliance, or by causing liquid that occurs outside the household appliance to be fed to the humidity sensor provided in the household appliance.
  • This ensures that the water-bearing domestic appliance can also be operated without the user's supervision, since the user is informed immediately in the event of damage and/or any damage that may occur is prevented or minimized by automatically controlling the shut-off device.
  • the measuring device preferably comprises at least one conductivity sensor.
  • a liquid inside the housing of the water-bearing household appliance is detected with a floating sensor or the like.
  • this requires a structural design that causes the water level to rise accordingly and moves a float switch of the float sensor accordingly so that the sensor responds.
  • This is disadvantageous if such a structural configuration is not possible and/or the amount of water occurring is so small that the response sensitivity of such a floating sensor is not sufficient to reliably detect the presence of a liquid.
  • the conductivity sensor can include two electrodes to which a specific voltage is applied.
  • the conductivity sensor can be designed to continuously measure an electrical resistance between the two electrodes. If the two electrodes are neither directly nor indirectly connected to each other, the electrical resistance is almost infinitely high. If, on the other hand, the two electrons are in an electrical connection with each other, the resistance drops rapidly. This occurs, for example, when both electrodes are in contact with the same body of water.
  • the conductivity sensor can thus detect a change in conductivity and, based on this, determine that a liquid is present at the electrodes of the conductivity sensor.
  • the two electrodes are at least 4 cm apart. This ensures that no false alarm is triggered, as could happen if the two electrodes are too close together and, for example, moist dust fluff or the like connects both electrons to one another.
  • the two electrodes are at least 2 cm apart. In particular when used in laundry treatment appliances and/or dishwashers, this provides the advantageous effect that liquid can be detected at an early point in time (ie even when relatively little liquid is present).
  • the two electrodes are spaced apart by approximately 1 cm.
  • the conductivity sensor does not have to be arranged at a specially designed location that ensures that a certain liquid depth is quickly established even when there is little liquid, in order to ensure a rapid response of the sensor.
  • the humidity sensor with electrodes spaced approximately 1 cm apart from one another can be provided at any desired location, since it can also detect a low level of water.
  • the distance also ensures adequate security against false triggering, as can be the case, for example, when damp laundry is removed from the drum of a laundry treatment device and a few drops fall to the floor.
  • the housing preferably has at least one opening and the measuring device comprises at least one collecting channel which is arranged on the housing so that liquid escaping from the at least one opening can be collected by the at least one collecting channel.
  • the opening can be, for example, an opening in the water-bearing household appliance that establishes a connection across the system boundary between an exterior of the housing and an interior of the housing.
  • the opening can be a laundry treatment agent drawer and/or an access to the treatment space in a laundry treatment appliance.
  • the opening can be a flap of a dishwasher.
  • the opening can be any opening of a water-bearing household appliance that overcomes the system boundary between the inside and outside of the housing.
  • liquid escaping from the opening can be collected by means of passive expansion of the water-bearing household appliance, so that it does not run to the ground on the outside of the water-bearing household appliance and can cause damage there.
  • the measuring device can detect liquid collected in the collecting channel and control the shut-off device and/or issue a notification in accordance with the above.
  • the collecting channel can extend, for example, on the base of the water-bearing household appliance over the entire width of the water-bearing household appliance. It can thus be ensured that liquid running off the housing of the water-bearing household appliance can also be reliably collected. In this case, a single collecting channel can be provided on the water-bearing household appliance. Thus, the appearance of the water-bearing household appliance is not impaired by the gutter and the freedom of design is increased.
  • the at least one collecting channel is preferably configured, in particular inclined, in such a way that the collected liquid can be conducted to a collection point, and the measuring device is preferably configured to detect a liquid at the collection point.
  • the collecting channel can have a U-shaped or V-shaped cross section. In this way, liquid can be reliably collected in the collecting channel. Furthermore, the collecting channel can be inclined so that the collected liquid can be reliably drained off.
  • the collection point can be designed in such a way that the cross section of the collecting channel is widened there. A certain amount of liquid can thus be collected at the collection point without it running out of the collection channel and onto the floor or furniture. Consequently, during a time between a first liquid spill and the shut-off by the shut-off device, the spilled liquid can be reliably contained and stored (i.e. in the gutter and/or collection point) to prevent any damage.
  • the collecting ring preferably has a capacity of more than 100 ml.
  • the collecting channel has a capacity of more than 200 ml. In this case, even with a large water spill, enough water can be retained by the gutter and/or collection point.
  • each opening is preferably assigned a collecting channel, which has a collecting point assigned to each collecting channel or a common collecting point.
  • each opening in the housing of the water-bearing household appliance can have its own separate collecting channel. Any opening in the case of the water-bearing household appliance can also have its own collection point. Thus, in addition to detecting liquid at a collection point, it is also possible to determine from which opening the liquid escaped. This information can be output by the control unit as a notification to the user, for example.
  • different collecting channels can also have a single collection point to which liquid can be supplied from all collecting channels.
  • the housing can be made more compact since less space is required for collection points.
  • the at least one collection point is preferably arranged within the housing.
  • the liquid collected by the at least one collecting channel can be transferred across the system boundary from outside the housing into the interior of the housing.
  • the at least one collecting channel can extend, for example, through an opening in the housing into the interior of the housing.
  • the liquid can then be fed to a moisture sensor that is present there, for example.
  • the liquid collected outside of the housing can be fed to the floor pan and, in particular, to a local sump. Consequently, the water-carrying household appliance can use an already existing humidity sensor by means of a passive extension in order to detect the occurrence of liquid outside the housing.
  • several collection points can also be arranged in the housing. For this purpose, each collecting channel runs to the respective collection point in the housing. As above, this offers the advantage that it can be determined from which opening the liquid has escaped, since each collecting channel can be associated with a specific opening.
  • the measuring device preferably includes a liquid sensor, in particular a conductivity sensor, and the liquid sensor is preferably arranged at the at least one collection point, so that a liquid can be detected at at least one collection point.
  • each collecting channel can have its own liquid sensor, so that the presence of liquid can be determined individually for each channel.
  • the channel can be designed in the form of a pocket and a collection point can be located at the lowest point of the collecting channel.
  • Electrodes of a conductivity sensor can be arranged on the sides of the collecting channel. The electrodes are preferably arranged above the level of the deepest point of the collecting channel in such a way that the conductivity sensor is activated above a specific water level in the collecting channel or in the collection point. In this way, false triggering can be prevented because the conductivity sensor only strikes when the water level in the collecting channel or the collection point rises above a predetermined level.
  • the electrodes of the conductivity sensor are preferably located in the lower third of the total height of the collection point or the collection channel. In this case, a particularly advantageous operation is possible, since the sensor strikes early enough before the collection point or the collecting trough overflows, and false triggering can nevertheless be avoided.
  • the measuring device preferably comprises an underbody moisture sensor, in particular a conductivity sensor, the underbody moisture sensor being preferably arranged below the housing when the water-bearing household appliance is in an operating state.
  • the moisture sensor is preferably in contact with the floor under the water-bearing household appliance.
  • the electrodes of a conductivity sensor are in contact with the ground.
  • the electrodes are preferably at a distance from one another of at least 2 cm. False tripping can thus be avoided.
  • the electrodes can be pretensioned with a tensioning device in such a way that they are reliably in contact with the ground. Thus, the electrodes can reliably detect the occurrence of liquid under the case.
  • conductive feet of the water-bearing household appliance are used as the electrons of the conductivity sensor.
  • a voltage is applied to the feet of a water-bearing household appliance, so that the occurrence of moisture or liquid under the housing of the water-bearing household appliance can be reliably detected.
  • a voltage is preferably applied to at least three feet of the water-bearing household appliance, so that even small, flat liquid leaks can be detected.
  • the feet can be designed in such a way that they include a conductive element that is in contact with the ground.
  • the measuring device preferably includes a moisture sensor which is designed as a conductivity sensor with at least two electrons, the electrons preferably having a distance of at least 3 cm, preferably at least 2 cm, from one another.
  • Adequate sensitivity for detecting liquid can be achieved in these areas without increased false triggering occurring.
  • a method for controlling a water-bearing household appliance comprising the following steps: providing one of the above water-bearing household appliances, detecting liquid outside the housing and controlling the shut-off device so that a water supply to the water-bearing household appliance is inhibited, and/or providing notification that liquid is present outside of the housing.
  • FIG. 12 is a schematic and perspective representation of a laundry treating appliance 100 as known in the art.
  • the laundry treatment appliance 100 has a treatment room 40 for treating laundry.
  • the laundry treatment appliance 100 has a housing 20 which defines an interior space.
  • a measuring device 60 is provided in the interior, which can detect any liquid occurring inside the laundry treatment appliance 100 .
  • the laundry treatment appliance 100 is connected to a water source with a water supply 30 .
  • a shut-off device 50 is arranged in the water supply 30 . If the measuring device 60 now detects liquid, the shut-off device 50 is controlled in such a way that it shuts off the water supply to the water-bearing household appliance.
  • FIG. 12 is a schematic front view of the laundry treating appliance of FIG figure 1 .
  • the laundry treatment appliance 100 also has a treatment agent drawer 90 .
  • the laundry treatment appliance 100 has an opening in the form of a porthole as access to the treatment room.
  • Both the treatment agent drawer 90 and the porthole represent an opening in the system boundary of the housing 20.
  • Known laundry treatment devices also have access to the fluff filter, the drain pump or other facilities of the laundry treatment device. All of these openings can be closed and normally these openings represent a watertight barrier between the interior of the laundry treatment appliance 100 and the exterior of the laundry treatment appliance 100. However, should water (ie a liquid) leak in due to incorrect operation, due to wear and tear and/or due to other reasons.
  • this liquid 8 runs down along the housing 20 on the outside of the laundry treatment appliance. Even if if this liquid emerges only in drops, a considerable amount of liquid 8 can accumulate below the laundry treatment appliance 100 . This liquid can cause damage to property and furniture. In this case, the liquid present on the outside is not detected by the measuring device 60 arranged inside the laundry treatment appliance. Therefore, the operation of the laundry treatment appliance 100 continues unnoticed and the damage can thus increase.
  • FIG 3 12 is a schematic front view of a laundry treating appliance 1 according to an embodiment of the present invention.
  • the laundry treatment appliance 1 is intended to eliminate the disadvantages of the prior art described above.
  • the laundry treatment appliance 1 of the present invention has the features of known laundry treatment appliances described above.
  • the laundry treatment appliance 1 has a housing 2 which defines an interior space in its interior.
  • a measuring device 6 is arranged in the interior.
  • the measuring device 6 is located in a closed floor pan at its lowest point.
  • the laundry treatment appliance 1 has a treatment agent drawer 9 and a porthole 10 .
  • the treatment agent drawer and the porthole form a transition across the system boundary between the outside and inside of the housing 2.
  • the laundry treatment appliance 1 also has a control unit 7 which is designed to receive and process signals and output control signals.
  • the laundry treatment appliance 1 has a shut-off device (not shown), which corresponds to the shut-off device 50 from the prior art and is arranged in a supply line 3 for water.
  • the laundry treatment appliance 1 can have other openings that are not shown in the figures.
  • the laundry treatment appliance 1 of the present embodiment has two collecting channels 11, each of which is associated with an opening.
  • a collecting channel 11 is thus assigned to the treatment agent drawer 9 and a collecting channel 11 is also assigned to the porthole 10 . If liquid 8 now emerges from the treatment agent drawer 9 and/or the porthole 10 , this liquid is collected in the collecting channel 11 and conducted to a collection point 12 .
  • the liquid 8 is conducted from the collection point 12 into the interior of the housing 2 and fed there to the floor pan. This causes a liquid level to rise within the housing 2 and raises a float of the measuring device 6, which is designed as a float switch in the present embodiment.
  • a signal is then transmitted to the control unit 7, which then controls the shut-off device in such a way that the further water supply to the water-bearing household appliance 1 is interrupted.
  • the signal path of the signal from the measuring device to the control unit 7 is shown schematically with arrows.
  • the control unit 7 sends a notification (eg an alarm) to the user, preferably via the Internet to a smart device.
  • the control unit preferably sends a signal and shuts off the water supply.
  • shut-off device 5 is automatically actuated and/or a signal is output in order to prevent water from being supplied to the laundry treatment appliance 1 any further.
  • FIG 4 12 is a schematic front view of a water-bearing household appliance 1 according to a further embodiment of the present invention.
  • the water-bearing household appliance 1 of the present embodiment corresponds essentially to that of FIG figure 3 with the difference that only a collecting channel 11 is provided.
  • the collecting channel 11 in the present embodiment extends over the entire width of the water-bearing household appliance 1 (ie over the entire width of the housing 2).
  • the collecting channel 11 is arranged in the vicinity of the base below the deepest opening. This ensures that all of the liquid 8 that escapes from one of the openings is caught by the collecting channel 11 . If liquid 8 escapes, it is caught by the collecting channel 11 and fed to the collection point 12 . From there, the liquid 8 returns to the interior of the housing 2 so that the measuring device 6 provided in the housing 2 can detect the liquid 8 .
  • an existing aquastop system (locking device) can be upgraded to a fully-fledged aquastop system by adding a passive extension. If liquid accidentally escapes from the detergent drawer or the porthole, the water will stick to the front of the machine and run along it to the floor of the property. In terms of design, this can be very done tastefully.
  • local collecting channels (see figure 3 ) must be fitted, one in the detergent drawer area and one in the porthole area (see description above). These can be integrated even more unobtrusively into the existing deepening in the front of the device. What all collecting channels have in common is that they can be designed with a sloping design and at their deepest point an opening leads into the interior of the machine, specifically towards the ground, for example via downpipes. The collected water activates the existing internal Aquastop system.
  • smaller amounts of liquid are not detected and therefore do not trigger a false alarm.
  • Smaller amounts of water evaporate in the collecting channel and/or do not lead to effective drainage into the laundry treatment device 1. Only Leaks of water in harmful quantities are recorded.
  • FIG. 12 is a schematic front view of a water-bearing household appliance 1 according to a further embodiment of the present invention.
  • the water-bearing domestic appliance 1 of the present invention corresponds to the previously described embodiments, with the difference that the measuring device has two conductivity sensors 6, one of which is arranged in one of the collecting channels 11. More specifically, a gutter 11 is arranged under the processing agent drawer 9 and a gutter 11 is arranged under the porthole 10 .
  • Each collecting channel 11 has its own liquid sensor 6 assigned to it.
  • the respective detection results of the liquid sensors 6 are fed to the control unit 7 .
  • the control unit 7 can thus identify where the liquid 8 has escaped.
  • the control unit 7 can pass this on to a user.
  • this information can also be stored internally in order to be able to use the information later for targeted repair of the damage when tracking the damage.
  • FIG. 12 is a schematic view of another embodiment of the present invention.
  • the laundry treating apparatus 1 of the present embodiment differs from that in FIG figure 5 illustrated laundry treatment device 1 by a further conductivity sensor 6 is arranged below the housing 2.
  • the conductivity sensor 6 has two electrodes which are in contact with the substrate on which the laundry treatment appliance 1 is standing. The electrodes can pressed against the ground by a biasing device to ensure reliable contact between the electrodes and the ground. Safety can thus be further increased in that even liquid can be detected that is not caught by one of the collecting channels 11 and is therefore not detected by the measuring device 6 provided there, but that reaches the floor under the laundry treatment appliance 1 in a different way.
  • a wired conductivity sensor is attached as part of the measuring device 6 in the vicinity of the laundry treatment appliance 1 .
  • This conductivity sensor e.g. conductance sensor
  • the conductivity sensor described can also be a battery-powered, self-sufficient liquid sensor that can be supplied together with the laundry treatment appliance. This can be or can be connected to the laundry treatment appliance 1 by radio so that the control unit 7 can actively control the shut-off device 5 based on a detection result of the external conductivity sensor.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Devices For Medical Bathing And Washing (AREA)
EP22169983.8A 2021-05-18 2022-04-26 Wasserführendes haushaltsgerät und verfahren zum steuern eines wasserführenden haushaltsgeräts Pending EP4091521A1 (de)

Applications Claiming Priority (1)

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DE102021205007.7A DE102021205007A1 (de) 2021-05-18 2021-05-18 Wasserführendes Haushaltsgerät und Verfahren zum Steuern eines wasserführenden Haushaltsgeräts

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EP (1) EP4091521A1 (zh)
CN (1) CN115369617A (zh)
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04166125A (ja) * 1990-10-31 1992-06-12 Matsushita Electric Ind Co Ltd 食器洗浄機
US20110284094A1 (en) * 2010-05-18 2011-11-24 Chilcoat Edward A Liquid leak control appliance pedestal
US9284674B2 (en) * 2009-12-07 2016-03-15 Lg Electronics Inc. Washing machine and washing method
EP3653776A1 (en) * 2018-11-14 2020-05-20 LG Electronics Inc. -1- Tub for washing machine and washing machine having the same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006029949A1 (de) 2006-06-29 2008-01-03 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Schutz vor Leckwasserschäden und von vorn beschickbare Waschmaschine zur Durchführung des Verfahrens

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04166125A (ja) * 1990-10-31 1992-06-12 Matsushita Electric Ind Co Ltd 食器洗浄機
US9284674B2 (en) * 2009-12-07 2016-03-15 Lg Electronics Inc. Washing machine and washing method
US20110284094A1 (en) * 2010-05-18 2011-11-24 Chilcoat Edward A Liquid leak control appliance pedestal
EP3653776A1 (en) * 2018-11-14 2020-05-20 LG Electronics Inc. -1- Tub for washing machine and washing machine having the same

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CN115369617A (zh) 2022-11-22

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