EP1997951B1 - Laundry machine - Google Patents
Laundry machine Download PDFInfo
- Publication number
- EP1997951B1 EP1997951B1 EP07109253A EP07109253A EP1997951B1 EP 1997951 B1 EP1997951 B1 EP 1997951B1 EP 07109253 A EP07109253 A EP 07109253A EP 07109253 A EP07109253 A EP 07109253A EP 1997951 B1 EP1997951 B1 EP 1997951B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drum
- laundry
- laundry machine
- coil
- electric
- 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.)
- Not-in-force
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Classifications
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- 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
- D06F34/18—Condition of the laundry, e.g. nature or weight
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/02—Characteristics of laundry or load
- D06F2103/08—Humidity
- D06F2103/10—Humidity expressed as capacitance or resistance
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- 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
- D06F2103/58—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to condensation, e.g. condensate water level
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- 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
- D06F34/04—Signal transfer or data transmission arrangements
- D06F34/05—Signal transfer or data transmission arrangements for wireless communication between components, e.g. for remote monitoring or control
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/32—Control of operations performed in domestic laundry dryers
- D06F58/34—Control of operations performed in domestic laundry dryers characterised by the purpose or target of the control
- D06F58/36—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry
- D06F58/38—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of drying, e.g. to achieve the target humidity
Definitions
- the present invention relates to a laundry machine.
- the present invention may be used to particular advantage in a laundry drying machine having a wireless laundry humidity sensor, to which the following description refers purely by way of example.
- a standard home tumble laundry drying machine condenses a stream of hot air blown into a drying drum and which removes moisture from the laundry; and the front access to the drum is closed by a hinged panel-type front door.
- a known laundry drying machine comprises a ventilation system (i. e. usually a blower comprising a fan and an electric fan motor) and a heating arrangement, which draw air from the outside and, via an appropriate conduit arrangement, heat and blow the air into and through the laundry drying drum.
- the hot drying air is then either exhausted directly from the drying machine or fed to condensing means to condense the moisture collected in the hot air.
- the duration of a drying cycle was constant and predetermined.
- the weight and initial humidity of the laundry to be dried are variable, so that a drying cycle of fixed duration may be either too short (i.e. at the end of the drying cycle, the laundry is still too damp and the drying cycle therefore ineffective) or too long (i.e. the drying cycle has used too much energy and is therefore inefficient).
- a modern tumble drying machine normally employs a sensor to measure the relative humidity of the laundry during the drying cycle and to stop the drying cycle when the humidity of the laundry reaches a given value depending on the drying cycle selected by the user.
- the most effective way of measuring humidity is a direct measurement of the conductivity of the laundry.
- Various solutions are already marketed, which measure the conductivity between the drum and metal inserts fixed to the drum outlet or the lifters, or in which the drum is divided into two halves, and conductivity measured in between.
- a limitation of the above known methods lies in the restrictions imposed on the drum which, being a component of the measuring system, must be made of any conductive material (e.g., stainless steel), and cannot be made of plastic, which is insulating, or lined with soft materials (such as thin silicone layers), which are also insulating. Consequently, the above known methods cannot be used in a tumble drying machine, in which "gentle treatment" of the laundry is achieved by lining the drum with soft materials.
- the electric signal for measuring the conductivity of the laundry must be transferred from the rotating drum to an external fixed control unit by means of brushes sliding on a metal ring.
- the brushes have a relatively short working life and must therefore be replaced frequently, and are potentially noisy, due to brush creep-generated noise.
- the metal ring may also have a relatively short working life due to oxidation.
- FR 2 685 575 discloses an electrical generator for supplying electrical energy to a component driven in rotation about an axis. To this effect, it comprises a stator integral with the said component, and a rotor integral with a rotor support.
- the rotor support is mounted on the the component in such a way that the rotational movement of the component causes a relative movement of the rotor with respect to the stator.
- WO 2004/022836 discloses a washer-dryer machine comprising a drum provided with a sensor device having a sensor element for determining the degree of dampness of said washing load.
- the sensor device is provided with contact-less signal transmission to a control unit of the washer-dryer machine.
- the signal transmission can occur in a targeted manner, e.g. by means of light signals.
- the signal transmission can also be carried out in a non-targeted manner, e.g. by radio.
- Power transmission can occur in a contact-free manner like said signal transmission.
- EP 1 321 563 discloses a laundry dryer comprising a housing enclosing a rotary drum and a measuring device for determining at least one parameter of the laundry or the drying air contained in the rotary drum, wherein the measuring device has a measuring sensor mounted on the rotary drum cooperating with a stationary reader.
- the measured values e.g. the laundry moisture content values, are transmitted between the sensor and the reader via a cordless link between a transmitter and a receiver.
- US 3,710,138 discloses a control system for a clothes dryer including a fabric dryness sensing circuit comprising electrodes or probes mounted within a drum.
- the electrodes are in the form of a pair of elongated conductor members mounted on the crown of each of the baffle members to provide a contacting surface engageable by the fabrics tumbling within the drum.
- Electrical energy is supplied to electrode, for example, by lead that is connected to a brush that engages the stationary slip ring while the drum is rotating.
- the slip ring is mounted on the electrically insulative air sealing member.
- the slip ring is in turn connected to a lead which runs to the control unit.
- the electrode is connected by lead to the rotatable drum and through the drum, the drive shaft, and blower housing to the chassis including the base.
- the chassis is then connected to earth ground through a conductor electrically connected with the base, for example. Electrode 81 is thus connected to earth ground.
- Number 1 in Figure 1 indicates as a whole a laundry drying machine comprising a casing 2 resting on a floor 3 on a number of feet 4.
- Casing 2 supports a revolving laundry drum 5 which rotates about a horizontal rotation axis 6 (in alternative embodiments not shown, rotation axis 6 may be tilted or vertical), and front access to which is closed by a door 7 hinged to a front wall of casing 2.
- Drum 5 is rotated by an electric motor 8, and is fed through with a stream of drying air fed into drum 5 by a centrifugal fan 9 and heated by heating elements 10.
- the moisture in the laundry in drum 5 is released by evaporation to the stream of hot drying air; and the moist hot air from drum 5 is piped to a condenser 11, which is cooled by a stream of relatively cold air drawn in from the outside by a centrifugal aspirator 12.
- condenser 11 the vapour in the stream of hot air is condensed to liquid by cooling, and collects in a condenser reservoir 13; the dry air from condenser 11 is drawn by fan 9 and fed back into drum 5, subject to reheating by heating elements 10; and the outside air used for condensation is exhausted.
- condensation collected in condenser reservoir 13 is pumped by a pump 14 into a condensation tank 15 fitted to door 7 closing the loading opening of drum 5 and located at a higher level than condenser reservoir 13; and, when condensation tank 15 is full, a known level sensor (not shown) is activated to stop drying machine 1. Operation of the drying machine is controlled by an electronic control unit (or programmer) 16 operated by buttons or knobs 17 on a front control panel 18.
- Electronic control unit 16 receives a humidity measurement of the laundry inside drum 5 during a drying cycle from a humidity sensor 19 fitted to drum 5 and comprising a wireless transmitter 20, which transmits the laundry humidity measurement to a wireless receiver 21 connected to electronic control unit 16.
- wireless transmitter 20 and wireless receiver 21 communicate, for example, by radio waves or optic (infrared) signals.
- Laundry drying machine 1 comprises an electric generator 22 fitted to drum 5, and which uses rotation of drum 5 to generate the electric energy necessary to operate humidity sensor 19.
- Electric generator 22 is preferably an electromagnetic generator, and comprises a coil 23; and a magnetic mass 24 located inside coil 23 and movable along coil 23 between two limit positions (shown in Figures 2 and 3 ) defined by two mechanical stops 25 and 26. Magnetic mass 24 moves freely inside coil 23 between the two limit positions, and is moved cyclically inside coil 23 between the two limit positions by force of gravity and rotation of drum 5.
- coil 23 In a first angular position of drum 5 shown in Figure 2 , coil 23 is in an upright position, in which mechanical stop 25 is above mechanical stop 26, and magnetic mass 24 drops by force of gravity onto mechanical stop 26; in a second angular position of drum 5, 180° from the first angular position and shown in Figure 3 , coil 23 is in an upright position, in which mechanical stop 26 is above mechanical stop 25, and magnetic mass 24 drops by force of gravity onto mechanical stop 25.
- Rotation of drum 5 causes a cyclic change in the orientation of electric generator 22, so that coil 23 moves cyclically between the Figure 2 and 3 upright positions, and magnetic mass 24 moves cyclically inside coil 23 between the two limit positions by force of gravity.
- At least one condenser 27 (or any other kind of device for accumulating electric energy) is connected to the ends of coil 23 to accumulate the electric energy generate by coil 23 and to stabilize the voltage value.
- humidity sensor 19 comprises a measuring unit 28; and a pair of electrodes 29 connected electrically to measuring unit 28.
- the resistance/conductivity of the laundry inside drum 5 is measured between the two electrodes 29 and used to determine laundry humidity in known manner.
- the two electrodes 29 are defined by respective electrically insulated portions of drum 5 (in which case, drum 5 must be made of any conductive material, and cannot be lined with soft materials), or are defined by conductive (normally circular or arc-shaped) bodies fixed to the inside of drum 5 (in which case, drum 5 may be made of plastic or lined with soft materials).
- an electric device (humidity sensor 19) is fitted to drum 5 and receives electric energy from electric generator 22.
- other kinds of electric devices may be fitted to drum 5; for example, a light source (for example one or more LED devices) for illuminating the drum 5 may be fitted to drum 5.
- drum 5 comprises a number of lifts (axial ribs for lifting the laundry during the rotation of drum 5) and the light source is integrated in at least one of the lifts.
- electric generator 22 may be applied to any kind of laundry machine having a revolving drum and an electric device fitted to the revolving drum.
- Laundry drying machine 1 as described above has numerous advantages, by being cheap and easy to produce, by effectively and efficiently determining laundry humidity by direct measurement of the electrical conductivity of the laundry, and by imposing no restrictions on the drum, which may be made of any material, including plastic, and may be lined with soft materials (such as thin silicone layers). Furthermore, laundry drying machine 1 as described above has no brushes (no brush wear, no brush creep-generated noise produced, no contact oxidation problems). No external voltage is applied to drum 5 and thus this solution is the safest for the users. Finally, wireless laundry humidity sensor 19 as described above is self-powered electrically, and therefore has no electric battery (no battery change required).
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Centrifugal Separators (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Description
- The present invention relates to a laundry machine.
- The present invention may be used to particular advantage in a laundry drying machine having a wireless laundry humidity sensor, to which the following description refers purely by way of example.
- A standard home tumble laundry drying machine condenses a stream of hot air blown into a drying drum and which removes moisture from the laundry; and the front access to the drum is closed by a hinged panel-type front door. More specifically, a known laundry drying machine comprises a ventilation system (i. e. usually a blower comprising a fan and an electric fan motor) and a heating arrangement, which draw air from the outside and, via an appropriate conduit arrangement, heat and blow the air into and through the laundry drying drum. The hot drying air is then either exhausted directly from the drying machine or fed to condensing means to condense the moisture collected in the hot air.
- In the past, the duration of a drying cycle was constant and predetermined. However, the weight and initial humidity of the laundry to be dried are variable, so that a drying cycle of fixed duration may be either too short (i.e. at the end of the drying cycle, the laundry is still too damp and the drying cycle therefore ineffective) or too long (i.e. the drying cycle has used too much energy and is therefore inefficient).
- A modern tumble drying machine normally employs a sensor to measure the relative humidity of the laundry during the drying cycle and to stop the drying cycle when the humidity of the laundry reaches a given value depending on the drying cycle selected by the user. The most effective way of measuring humidity is a direct measurement of the conductivity of the laundry. Various solutions are already marketed, which measure the conductivity between the drum and metal inserts fixed to the drum outlet or the lifters, or in which the drum is divided into two halves, and conductivity measured in between.
- A limitation of the above known methods lies in the restrictions imposed on the drum which, being a component of the measuring system, must be made of any conductive material (e.g., stainless steel), and cannot be made of plastic, which is insulating, or lined with soft materials (such as thin silicone layers), which are also insulating. Consequently, the above known methods cannot be used in a tumble drying machine, in which "gentle treatment" of the laundry is achieved by lining the drum with soft materials.
- Furthermore, when the drum is a component of the measuring system, the electric signal for measuring the conductivity of the laundry must be transferred from the rotating drum to an external fixed control unit by means of brushes sliding on a metal ring. The brushes, however, have a relatively short working life and must therefore be replaced frequently, and are potentially noisy, due to brush creep-generated noise. The metal ring may also have a relatively short working life due to oxidation.
- To eliminate the aforementioned drawbacks, it has been proposed to determine laundry humidity by measuring the temperature and/or humidity of the drying air from the drum. Indirect measurement of laundry humidity, however, is not very stable or precise, by being affected by numerous external parameters (for example, ambient temperature, laundry load, and air course).
- To partially eliminate the aforementioned drawbacks, and so permit unrestricted design of the drum, a new socalled "Limited Conductimetric System" has been proposed, based on a pair of small electrodes fixed to a non-moving part of the machine, e.g. the inside of the door. The "Limited Conductimetric System", however, has a number of disadvantages: due to the limited contact surface between the electrodes and the laundry, this system is fairly unreliable in stopping the drying cycle in time, especially with small loads (for example, of less than 1 kg) and damp cycles (for example, a final humidity of over 3-4%). Even with standard loads and dry cycles, in some cases, problems may arise because the end-of-cycle condition is not totally repeatable. Tests show that a tumble drying machine using the "Limited Conductimetric System" rarely stops a drying cycle with less than a 1 kg load in time; and, for damp cycles, even a 2 kg load may be an issue.
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FR 2 685 575 -
WO 2004/022836 discloses a washer-dryer machine comprising a drum provided with a sensor device having a sensor element for determining the degree of dampness of said washing load. The sensor device is provided with contact-less signal transmission to a control unit of the washer-dryer machine. The signal transmission can occur in a targeted manner, e.g. by means of light signals. The signal transmission can also be carried out in a non-targeted manner, e.g. by radio. Power transmission can occur in a contact-free manner like said signal transmission. -
EP 1 321 563 discloses a laundry dryer comprising a housing enclosing a rotary drum and a measuring device for determining at least one parameter of the laundry or the drying air contained in the rotary drum, wherein the measuring device has a measuring sensor mounted on the rotary drum cooperating with a stationary reader. The measured values, e.g. the laundry moisture content values, are transmitted between the sensor and the reader via a cordless link between a transmitter and a receiver. -
US 3,710,138 discloses a control system for a clothes dryer including a fabric dryness sensing circuit comprising electrodes or probes mounted within a drum. The electrodes are in the form of a pair of elongated conductor members mounted on the crown of each of the baffle members to provide a contacting surface engageable by the fabrics tumbling within the drum. Electrical energy is supplied to electrode, for example, by lead that is connected to a brush that engages the stationary slip ring while the drum is rotating. The slip ring is mounted on the electrically insulative air sealing member. The slip ring is in turn connected to a lead which runs to the control unit. The electrode is connected by lead to the rotatable drum and through the drum, the drive shaft, and blower housing to the chassis including the base. The chassis is then connected to earth ground through a conductor electrically connected with the base, for example. Electrode 81 is thus connected to earth ground. - It is an object of the present invention to provide a laundry machine, designed to eliminate the aforementioned drawbacks, and which is cheap and easy to produce.
- According to the present invention, there is provided a laundry machine as claimed in the accompanying Claims.
- A non-limiting embodiment of the present invention will be described by way of example with reference to the accompanying drawings, in which:
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Figure 1 shows a schematic side view of a laundry drying machine having a wireless laundry humidity sensor in accordance with the present invention; -
Figures 2 and 3 show schematic views of theFigure 1 wireless laundry humidity sensor in two different working configurations. - Number 1 in
Figure 1 indicates as a whole a laundry drying machine comprising acasing 2 resting on afloor 3 on a number offeet 4.Casing 2 supports a revolvinglaundry drum 5 which rotates about a horizontal rotation axis 6 (in alternative embodiments not shown,rotation axis 6 may be tilted or vertical), and front access to which is closed by a door 7 hinged to a front wall ofcasing 2.Drum 5 is rotated by anelectric motor 8, and is fed through with a stream of drying air fed intodrum 5 by acentrifugal fan 9 and heated byheating elements 10. - The moisture in the laundry in
drum 5 is released by evaporation to the stream of hot drying air; and the moist hot air fromdrum 5 is piped to acondenser 11, which is cooled by a stream of relatively cold air drawn in from the outside by acentrifugal aspirator 12. - In
condenser 11, the vapour in the stream of hot air is condensed to liquid by cooling, and collects in acondenser reservoir 13; the dry air fromcondenser 11 is drawn byfan 9 and fed back intodrum 5, subject to reheating byheating elements 10; and the outside air used for condensation is exhausted. - The condensation collected in
condenser reservoir 13 is pumped by apump 14 into acondensation tank 15 fitted to door 7 closing the loading opening ofdrum 5 and located at a higher level thancondenser reservoir 13; and, whencondensation tank 15 is full, a known level sensor (not shown) is activated to stop drying machine 1. Operation of the drying machine is controlled by an electronic control unit (or programmer) 16 operated by buttons orknobs 17 on afront control panel 18. -
Electronic control unit 16 receives a humidity measurement of the laundry insidedrum 5 during a drying cycle from ahumidity sensor 19 fitted todrum 5 and comprising awireless transmitter 20, which transmits the laundry humidity measurement to awireless receiver 21 connected toelectronic control unit 16. In different embodiments,wireless transmitter 20 andwireless receiver 21 communicate, for example, by radio waves or optic (infrared) signals. - Laundry drying machine 1 comprises an
electric generator 22 fitted todrum 5, and which uses rotation ofdrum 5 to generate the electric energy necessary to operatehumidity sensor 19.Electric generator 22 is preferably an electromagnetic generator, and comprises acoil 23; and amagnetic mass 24 located insidecoil 23 and movable alongcoil 23 between two limit positions (shown inFigures 2 and 3 ) defined by twomechanical stops Magnetic mass 24 moves freely insidecoil 23 between the two limit positions, and is moved cyclically insidecoil 23 between the two limit positions by force of gravity and rotation ofdrum 5. - In a first angular position of
drum 5 shown inFigure 2 ,coil 23 is in an upright position, in whichmechanical stop 25 is abovemechanical stop 26, andmagnetic mass 24 drops by force of gravity ontomechanical stop 26; in a second angular position ofdrum 5, 180° from the first angular position and shown inFigure 3 ,coil 23 is in an upright position, in whichmechanical stop 26 is abovemechanical stop 25, andmagnetic mass 24 drops by force of gravity ontomechanical stop 25. Rotation ofdrum 5 causes a cyclic change in the orientation ofelectric generator 22, so thatcoil 23 moves cyclically between theFigure 2 and 3 upright positions, andmagnetic mass 24 moves cyclically insidecoil 23 between the two limit positions by force of gravity. - As
magnetic mass 24 moves insidecoil 23, a voltage is present at the ends ofcoil 23 to electricallypower humidity sensor 19. In a preferred embodiment, at least one condenser 27 (or any other kind of device for accumulating electric energy) is connected to the ends ofcoil 23 to accumulate the electric energy generate bycoil 23 and to stabilize the voltage value. - As shown in
Figure 1 ,humidity sensor 19 comprises a measuringunit 28; and a pair ofelectrodes 29 connected electrically to measuringunit 28. The resistance/conductivity of the laundry insidedrum 5 is measured between the twoelectrodes 29 and used to determine laundry humidity in known manner. In different embodiments, the twoelectrodes 29 are defined by respective electrically insulated portions of drum 5 (in which case,drum 5 must be made of any conductive material, and cannot be lined with soft materials), or are defined by conductive (normally circular or arc-shaped) bodies fixed to the inside of drum 5 (in which case,drum 5 may be made of plastic or lined with soft materials). - In other words, in a preferred embodiment shown in the attached drawings an electric device (humidity sensor 19) is fitted to drum 5 and receives electric energy from
electric generator 22. According to different embodiments, other kinds of electric devices may be fitted to drum 5; for example, a light source (for example one or more LED devices) for illuminating thedrum 5 may be fitted to drum 5. Preferably,drum 5 comprises a number of lifts (axial ribs for lifting the laundry during the rotation of drum 5) and the light source is integrated in at least one of the lifts. - Of course
electric generator 22 may be applied to any kind of laundry machine having a revolving drum and an electric device fitted to the revolving drum. - Laundry drying machine 1 as described above has numerous advantages, by being cheap and easy to produce, by effectively and efficiently determining laundry humidity by direct measurement of the electrical conductivity of the laundry, and by imposing no restrictions on the drum, which may be made of any material, including plastic, and may be lined with soft materials (such as thin silicone layers). Furthermore, laundry drying machine 1 as described above has no brushes (no brush wear, no brush creep-generated noise produced, no contact oxidation problems). No external voltage is applied to drum 5 and thus this solution is the safest for the users. Finally, wireless
laundry humidity sensor 19 as described above is self-powered electrically, and therefore has no electric battery (no battery change required).
Claims (10)
- A laundry machine (1) comprising:a revolving laundry drum (5) having a front access opening, an electric device fitted to the drum (5) and an electric generator (22), which is fitted to the drum (5) and uses rotation of the drum (5) to generate the electric energy necessary to operate the electric device, wherein the electric generator (22) comprising at least one coil (23) and a magnetic mass (24) located inside the coil (23), characterized in that the coil (23) comprises two mechanical stops (25, 26), each of which limits movement of the magnetic mass (24) and defines a respective limit position, wherein the magnetic mass (24) is freely movable inside the coil (23) between the two limit positions so that rotation of the drum (5) causes a cyclic movement of the magnetic mass (24) inside the coil (23) between the two limit positions.
- A laundry machine (1) as claimed in Claim 1, wherein the electric generator (22) comprises at least one device for accumulating electric energy connected to the ends of the coil (23) to accumulate the electric energy generate by the coil (23).
- A laundry machine (1) as claimed in Claim 2, wherein the device for accumulating electric energy is a condenser (27).
- A laundry machine (1) as claimed in any of Claims 1 to 3, wherein the electric device fitted to the drum (5) is a humidity sensor (19) for measuring the humidity of the laundry inside the drum (5).
- A laundry machine (1) as claimed in Claim 4 and comprising an electronic control unit (16) for controlling operation of the laundry machine (1) and receiving the laundry humidity measurement from the humidity sensor (19); the humidity sensor (19) comprises a wireless transmitter (20) which transmits the laundry humidity measurement to a wireless receiver (21) connected to the electronic control unit (16).
- A laundry machine (1) as claimed in Claim 4 or 5, wherein the humidity sensor (19) comprises two electrodes (29) on the drum (5), and a measuring unit (28) connected to the two electrodes (29) to measure the resistance/conductivity between the two electrodes (29).
- A laundry machine (1) as claimed in Claim 6, wherein the two electrodes (29) are defined by respective electrically insulated portions of the drum (5).
- A laundry machine (1) as claimed in Claim 6, wherein the two electrodes (29) are defined by conductive bodies fixed to the inside of the drum (5).
- A laundry machine (1) as claimed in any of Claims 1 to 3, wherein the electric device fitted to the drum (5) is a light source for illuminating the drum (5).
- A laundry machine (1) as claimed in Claim 9, wherein the drum (5) comprises a number of lifts; the light source is integrated in at least one of the lifts.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT07109253T ATE501300T1 (en) | 2007-05-30 | 2007-05-30 | WASHING MACHINE |
ES07109253T ES2362938T3 (en) | 2007-05-30 | 2007-05-30 | COLADA DRYING MACHINE. |
DE602007013017T DE602007013017D1 (en) | 2007-05-30 | 2007-05-30 | Washing machine |
PL07109253T PL1997951T3 (en) | 2007-05-30 | 2007-05-30 | Laundry machine |
EP07109253A EP1997951B1 (en) | 2007-05-30 | 2007-05-30 | Laundry machine |
RU2008121730/12A RU2453643C2 (en) | 2007-05-30 | 2008-05-29 | Machine for drying clothes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07109253A EP1997951B1 (en) | 2007-05-30 | 2007-05-30 | Laundry machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1997951A1 EP1997951A1 (en) | 2008-12-03 |
EP1997951B1 true EP1997951B1 (en) | 2011-03-09 |
Family
ID=38578577
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07109253A Not-in-force EP1997951B1 (en) | 2007-05-30 | 2007-05-30 | Laundry machine |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1997951B1 (en) |
AT (1) | ATE501300T1 (en) |
DE (1) | DE602007013017D1 (en) |
ES (1) | ES2362938T3 (en) |
PL (1) | PL1997951T3 (en) |
RU (1) | RU2453643C2 (en) |
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DE102012217975A1 (en) | 2012-10-02 | 2014-04-03 | BSH Bosch und Siemens Hausgeräte GmbH | Household appliance e.g. washing machine, has transmitter transferring radio signal to control device in wireless manner, and generator with contact surfaces providing electrical power between surfaces based on difference in temperature |
US10087571B2 (en) | 2015-08-07 | 2018-10-02 | Haier Us Appliance Solutions, Inc. | Dryer appliances and methods for operating dryer appliances utilizing wireless moisture data transfer systems |
WO2022055111A1 (en) * | 2020-09-08 | 2022-03-17 | 삼성전자주식회사 | Dryer |
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DE102013209209A1 (en) | 2013-05-17 | 2014-11-20 | BSH Bosch und Siemens Hausgeräte GmbH | Home appliance with energy recovery and method for recovering energy in a household appliance |
ITTO20131040A1 (en) * | 2013-12-18 | 2015-06-19 | Indesit Co Spa | MACHINE WASHING MACHINE OR WASHING MACHINE INCLUDING AN ELECTRIC CURRENT GENERATOR |
US9518354B2 (en) | 2014-06-18 | 2016-12-13 | Haier Us Appliance Solutions, Inc. | Clothes dryer with improved moisture sensing and wireless data transfer |
DE102016213232A1 (en) | 2016-07-20 | 2018-01-25 | BSH Hausgeräte GmbH | Household appliance with improved control and method for operating such a household appliance |
DE102016216265A1 (en) | 2016-08-30 | 2018-03-01 | BSH Hausgeräte GmbH | Household appliance with a self-sufficient energy supply and method for operating such a household appliance |
TR201721912A2 (en) * | 2017-12-26 | 2019-07-22 | Arcelik As | ENERGY SOURCE FOR THE ROTARY DRUM |
CN112055766A (en) * | 2018-05-21 | 2020-12-08 | 伊莱克斯家用电器股份公司 | Clothes dryer |
DE102018219361A1 (en) | 2018-11-13 | 2020-05-14 | BSH Hausgeräte GmbH | Tumble dryer with acceleration sensor and method for its operation |
DE102018219349A1 (en) | 2018-11-13 | 2020-05-14 | BSH Hausgeräte GmbH | Tumble dryer with improved controls and procedures for its operation |
WO2020120218A1 (en) * | 2018-12-14 | 2020-06-18 | Arcelik Anonim Sirketi | A textile treatment appliance |
KR102661335B1 (en) * | 2019-01-16 | 2024-04-30 | 엘지전자 주식회사 | Laundry treatment machine |
US11632604B2 (en) * | 2019-05-22 | 2023-04-18 | Samsung Electronics Co., Ltd. | Sensor device and electronic device obtaining information from the sensor device |
CN112064298A (en) * | 2019-05-23 | 2020-12-11 | 青岛海尔洗衣机有限公司 | Clothes treating apparatus |
CN112064297B (en) * | 2019-05-23 | 2023-05-12 | 青岛海尔洗衣机有限公司 | Clothes treating apparatus |
JP7474837B2 (en) * | 2019-08-02 | 2024-04-25 | チンタオ ハイアール ウォッシング マシン カンパニー,リミテッド | Clothes processing equipment |
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FR2685359B1 (en) * | 1991-12-23 | 1995-10-20 | Sextant Avionique | SYSTEM FOR CONTROLLING THE STOPPAGE OF A DRYER. |
FR2685575A1 (en) * | 1991-12-23 | 1993-06-25 | Sextant Avionique | Electrical power supply generator for a component driven in rotation |
DE19652830A1 (en) * | 1996-12-18 | 1998-06-25 | Bosch Siemens Hausgeraete | Drum washing machine with a multi-part liquid line |
ITPN20000023A1 (en) * | 2000-04-18 | 2001-10-18 | Electrolux Zanussi Elettrodome | DRYING MACHINE, OR SIMILAR, WITH CONDUCTIMETRIC CONTROL OF HUMIDITY |
DE10163200A1 (en) * | 2001-12-21 | 2003-07-10 | Bsh Bosch Siemens Hausgeraete | Laundry treatment device |
DE10242144A1 (en) * | 2002-09-04 | 2004-03-18 | E.G.O. Control Systems Gmbh & Co. Kg | Tumble dryer with sensor device |
DE602006007134D1 (en) * | 2006-09-04 | 2009-07-16 | Electrolux Home Prod Corp | Control device for a washing machine and / or a tumble dryer |
-
2007
- 2007-05-30 ES ES07109253T patent/ES2362938T3/en active Active
- 2007-05-30 PL PL07109253T patent/PL1997951T3/en unknown
- 2007-05-30 AT AT07109253T patent/ATE501300T1/en not_active IP Right Cessation
- 2007-05-30 EP EP07109253A patent/EP1997951B1/en not_active Not-in-force
- 2007-05-30 DE DE602007013017T patent/DE602007013017D1/en active Active
-
2008
- 2008-05-29 RU RU2008121730/12A patent/RU2453643C2/en not_active IP Right Cessation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012217975A1 (en) | 2012-10-02 | 2014-04-03 | BSH Bosch und Siemens Hausgeräte GmbH | Household appliance e.g. washing machine, has transmitter transferring radio signal to control device in wireless manner, and generator with contact surfaces providing electrical power between surfaces based on difference in temperature |
US10087571B2 (en) | 2015-08-07 | 2018-10-02 | Haier Us Appliance Solutions, Inc. | Dryer appliances and methods for operating dryer appliances utilizing wireless moisture data transfer systems |
WO2022055111A1 (en) * | 2020-09-08 | 2022-03-17 | 삼성전자주식회사 | Dryer |
Also Published As
Publication number | Publication date |
---|---|
ES2362938T3 (en) | 2011-07-15 |
DE602007013017D1 (en) | 2011-04-21 |
EP1997951A1 (en) | 2008-12-03 |
RU2008121730A (en) | 2009-12-10 |
ATE501300T1 (en) | 2011-03-15 |
PL1997951T3 (en) | 2011-11-30 |
RU2453643C2 (en) | 2012-06-20 |
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