WO2008077969A1 - A washer / dryer with output from humidity sensor selectively input to control unit - Google Patents
A washer / dryer with output from humidity sensor selectively input to control unit Download PDFInfo
- Publication number
- WO2008077969A1 WO2008077969A1 PCT/EP2007/064542 EP2007064542W WO2008077969A1 WO 2008077969 A1 WO2008077969 A1 WO 2008077969A1 EP 2007064542 W EP2007064542 W EP 2007064542W WO 2008077969 A1 WO2008077969 A1 WO 2008077969A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- laundry
- humidity sensor
- moisture
- average
- dryer
- 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.)
- Ceased
Links
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
- 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
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/02—Characteristics of laundry or load
- D06F2103/08—Humidity
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/02—Characteristics of laundry or load
- D06F2103/08—Humidity
- D06F2103/10—Humidity expressed as capacitance or resistance
-
- 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
- D06F2105/28—Electric heating
-
- 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
- D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
- D06F2105/48—Drum speed
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- 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 washer/dryer wherein the dryness value of laundry is detected during the washing/drying process.
- the aim of the present invention is the realization of a washer/dryer wherein the moisture content s of the laundry is detected accurately during the washing/drying process.
- the moisture content of the laundry that is dried by agitating in the drum and blowing hot air thereon is detected by a humidity sensor and the control unit determines whether or not the laundry is dry by evaluating the data received from the humidity sensor.
- the control unit does not use in calculation the moisture content of zero or near to zero detected by the humidity sensor within a certain time duration, only takes into account those values that are different from zero or near to zero values. Then, the control unit calculates the average of the moisture data taken into consideration and regulates the drying process according to calculated average moisture content.
- control unit does not take into consideration the data received at instances when the laundry does not contact with the humidity sensor, only takes into consideration the data received at instances when the laundry contacts with the humidity sensor.
- control unit does not take into consideration the data received at instances when the laundry does not contact with the humidity sensor and data received at instances when the dry parts of the laundry contact the humidity sensor, only takes into consideration the humidity data received when the wet parts of the laundry contact the humidity sensor.
- Figure 1 - is the schematic view of a washer/dryer.
- the washer/dryer (1) comprises a drum (2) wherein laundry (L) is emplaced, a humidity sensor (3) disposed inside the drum (2) that detects the moisture content of the laundry (L), and a control unit (4) that regulates the drying process by evaluating the data received from the humidity sensor (3).
- the humidity sensor (3) is constituted of two plate shaped electrodes placed inside the drum (2).
- the moisture content of the laundry (L) is detected by the humidity sensor (3) through measuring the resistance of the laundry (L).
- the current that passes through one of the electrodes used for detecting moisture passes over the laundry (L) rotating in the drum (2) and reaches the other electrode.
- the current flowing through the electrodes is high when the laundry (L) is wet and less when the laundry (L) is dry.
- the moisture content of the laundry (L) is determined by correlating with the parameters of the current between the electrodes. A very high resistance, thus a current of close to zero between the electrodes and respectively a moisture content of close to zero is detected at instances when the laundry (L) rotating inside the drum (2) does not contact the electrodes.
- the momentary moisture contents of the laundry (L) in the drum (2) is measured by the humidity sensor (3) and an average moisture content (H average) is calculated by the control unit (4) according to data that are higher than the moisture data of zero or near to zero values received from the humidity sensor (3).
- the drying process is regulated according to the calculated moisture content by controlling the operation of the motor that rotates the drum (2) and the heater that heats the drying air..
- the moisture data of zero or near to zero values not included in the calculation of the average moisture (H average) by the control unit (4) are the moisture content data received at instances when the laundry (L) does not contact the humidity sensor (3).
- the moisture content data detected that are higher than the zero or near to zero values is the data received at instances when the laundry (L) contacts the humidity sensors (3).
- the moisture data received at instances when the laundry (L) does not contact the humidity sensor (3) are not used by the control unit (4) in calculating the average moisture (H average) and only the moisture data received at instances when the laundry (L) contacts the humidity sensor (3) are used in calculating the average moisture (H average).
- the data received at instances when the dry parts of the laundry (L) contact with the humidity sensor (3) is not taken into consideration by the control unit (4) in calculating the average moisture (H average).
- the control unit (4) only takes into consideration the moisture data received at instances when the wet parts of the laundry (L) contact the humidity sensor (3) and the data received at instances when the wet parts of the laundry (L) contact the humidity sensor (3) are used in calculating the average moisture (H average). .
- the actual moisture content of the laundry (L) is calculated by the control unit (4) independently from the amount of laundry (L) loaded into the drum (2) and by only evaluating the contact status of the laundry (L) with the humidity sensor (3), thus achieving a satisfactory drying performance in the washer/dryer (1).
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
The present invention relates to a washer/dryer (1) comprising a drum (2) wherein laundry (L) is emplaced, a humidity sensor (3) disposed inside the drum (2) that detects the moisture content of the laundry (L), and a control unit (4) that calculates the average of the moisture data (H average) without using the moisture data of zero or near to zero values detected by the humidity sensor (3) from the laundry (L) in a certain time duration, only taking into consideration the moisture data that is different from this moisture data and regulates the drying process according to the calculated average moisture content (H average).
Description
Description
A WASHER / DRYER WITH OUTPUT FROM HUMIDITY SENSOR SELECTIVELY INPUT TO CONTROL UNIT
[0001] The present invention relates to a washer/dryer wherein the dryness value of laundry is detected during the washing/drying process.
[0002] In the drying process in washer/dryers, generally the laundry is rotated in a drum at a certain speed. The laundry contacts the sensor plates in the drum that sense moisture while rotating and as a result of this contact; moisture data is attained from the laundry. It is important how the laundry moves during this rotation because both the wet and dry parts of the laundry contact the sensor plates during rotation and sometimes when there is a small amount of laundry in the drum, it may not contact the sensor plates at all. So the moisture data received from the laundry in the drum can be misleading.
[0003] In state of the art Korean Patent Document No KR940006248, electrode sensors disposed in the drum of a dryer determines the amount of clothing by counting the number of clothing contact and the drying parameters are changed according to the amount of clothing.
[0004] In state of the art United States of America Patent Document No US4733479, in a clothes dryer, the moisture content of the clothes is detected by a humidity sensor that produces respective resistance values for different amounts of detected humidity and one of "damp" "semi", "normal" and "extra" drying degrees is applied under the detected load amount.
[0005] The aim of the present invention is the realization of a washer/dryer wherein the moisture content s of the laundry is detected accurately during the washing/drying process.
[0006] The washer/dryer realized in order to attain the aim of the present invention is explicated in the claims.
[0007] In the washer/dryer of the present invention, the moisture content of the laundry that is dried by agitating in the drum and blowing hot air thereon is detected by a humidity sensor and the control unit determines whether or not the laundry is dry by evaluating the data received from the humidity sensor. The control unit does not use in calculation the moisture content of zero or near to zero detected by the humidity sensor within a certain time duration, only takes into account those values that are different from zero or near to zero values. Then, the control unit calculates the average of the moisture data taken into consideration and regulates the drying process according to calculated average moisture content.
[0008] In an embodiment of the present invention, the control unit does not take into consideration the data received at instances when the laundry does not contact with the humidity sensor, only takes into consideration the data received at instances when the laundry contacts with the humidity sensor.
[0009] In another embodiment of the present invention, the control unit does not take into
consideration the data received at instances when the laundry does not contact with the humidity sensor and data received at instances when the dry parts of the laundry contact the humidity sensor, only takes into consideration the humidity data received when the wet parts of the laundry contact the humidity sensor.
[0010] The washer/dryer realized in order to attain the aim of the present invention is illustrated in the attached figure, where:
[0011] Figure 1 - is the schematic view of a washer/dryer.
[0012] The elements illustrated in the figure are numbered as follows:
1. Washer/dryer
2. Drum
3. Humidity sensor
4. Control unit
[0013] The washer/dryer (1) comprises a drum (2) wherein laundry (L) is emplaced, a humidity sensor (3) disposed inside the drum (2) that detects the moisture content of the laundry (L), and a control unit (4) that regulates the drying process by evaluating the data received from the humidity sensor (3).
[0014] The humidity sensor (3) is constituted of two plate shaped electrodes placed inside the drum (2). The moisture content of the laundry (L) is detected by the humidity sensor (3) through measuring the resistance of the laundry (L). The laundry (L), when wet is more conductive hence can pass more current, when dry, shows more resistance and decreases in conductivity. The current that passes through one of the electrodes used for detecting moisture passes over the laundry (L) rotating in the drum (2) and reaches the other electrode. The current flowing through the electrodes is high when the laundry (L) is wet and less when the laundry (L) is dry. The moisture content of the laundry (L) is determined by correlating with the parameters of the current between the electrodes. A very high resistance, thus a current of close to zero between the electrodes and respectively a moisture content of close to zero is detected at instances when the laundry (L) rotating inside the drum (2) does not contact the electrodes.
[0015] The control unit (4) in the washer/dryer (1) of the present invention,
- calculates the average of the moisture content data (H average),
- without using the moisture data of zero or near to zero values detected by the humidity sensor (3) from the laundry (L) in a certain time duration,
- only taking into consideration the data detected by the humidity sensor (3), excluding the moisture data of zero or near to zero values, and
- regulates the drying process according to the calculated average moisture
Content (H average).
[0016] After the drying process is started in the washer/dryer (1), the momentary moisture contents of the laundry (L) in the drum (2) is measured by the humidity sensor (3) and an average moisture content (H average) is calculated by the control unit (4) according to data that are higher than the moisture data of zero or near to zero values received from
the humidity sensor (3). The drying process is regulated according to the calculated moisture content by controlling the operation of the motor that rotates the drum (2) and the heater that heats the drying air..
[0017] In the embodiment of the present invention, the moisture data of zero or near to zero values not included in the calculation of the average moisture (H average) by the control unit (4) are the moisture content data received at instances when the laundry (L) does not contact the humidity sensor (3). The moisture content data detected that are higher than the zero or near to zero values is the data received at instances when the laundry (L) contacts the humidity sensors (3). The moisture data received at instances when the laundry (L) does not contact the humidity sensor (3) are not used by the control unit (4) in calculating the average moisture (H average) and only the moisture data received at instances when the laundry (L) contacts the humidity sensor (3) are used in calculating the average moisture (H average).
[0018] In another embodiment of the present invention, the data received at instances when the dry parts of the laundry (L) contact with the humidity sensor (3) is not taken into consideration by the control unit (4) in calculating the average moisture (H average). In this embodiment, the control unit (4) only takes into consideration the moisture data received at instances when the wet parts of the laundry (L) contact the humidity sensor (3) and the data received at instances when the wet parts of the laundry (L) contact the humidity sensor (3) are used in calculating the average moisture (H average). .
[0019] By means of the embodiment of the present invention, the actual moisture content of the laundry (L) is calculated by the control unit (4) independently from the amount of laundry (L) loaded into the drum (2) and by only evaluating the contact status of the laundry (L) with the humidity sensor (3), thus achieving a satisfactory drying performance in the washer/dryer (1).
Claims
Claims
[0001] A washer/dryer (1) comprising a drum (2) wherein laundry (L) is emplaced, and a humidity sensor (3) disposed inside the drum (2) that detects the moisture content of the laundry (L), - and characterized by a control unit (4) that calculates the average of the moisture data (H average) without using the moisture data of zero or near to zero values detected by the humidity sensor (3) from the laundry (L) in a certain time duration, only taking into consideration the data detected by the humidity sensor (3) excluding the moisture data of zero or near to zero values and regulates the drying process according to the calculated average moisture content (H average)-
[0002] A washer/dryer (1) as in Claim 1, characterized by the control unit (4) that does not use the moisture data received at instances when the laundry (L) does not contact with the humidity sensor (3) in calculating the average moisture (H average) and only uses the moisture data received at instances when the laundry (L) contacts with the humidity sensor (3) in calculating the average moisture (H average
).
[0003] A washer/dryer (1) as in Claim 1, characterized by the control unit (4) that does not use the moisture data received at instances when the dry parts of the laundry (L) contact with the humidity sensor (3) in calculating the average moisture (H average) and only uses the moisture data received at instances when the wet parts of the laundry (L) contact with the humidity sensor (3) in calculating the average moisture (H average)-
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP07866318A EP2126188A1 (en) | 2006-12-26 | 2007-12-25 | A washer / dryer with output from humidity sensor selectively input to control unit |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TRTR2006/07455 | 2006-12-26 | ||
| TR200607455 | 2006-12-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008077969A1 true WO2008077969A1 (en) | 2008-07-03 |
Family
ID=39276000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2007/064542 Ceased WO2008077969A1 (en) | 2006-12-26 | 2007-12-25 | A washer / dryer with output from humidity sensor selectively input to control unit |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP2126188A1 (en) |
| WO (1) | WO2008077969A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061598A (en) * | 2009-11-18 | 2011-05-18 | 松下电器产业株式会社 | clothes dryer |
| US20120144692A1 (en) * | 2010-12-13 | 2012-06-14 | Samsung Electronics Co., Ltd. | Dryer |
| EP2738303A1 (en) * | 2012-11-28 | 2014-06-04 | Electrolux Home Products Corporation N.V. | A method for controlling a drying cycle of a laundry dryer |
| US10786491B2 (en) | 2008-05-16 | 2020-09-29 | Novartis Ag | Immunomodulation by IAP inhibitors |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5737852A (en) * | 1996-08-05 | 1998-04-14 | White Consolidated Industries, Inc. | Dryness control for clothes dryer |
| EP1507038A1 (en) * | 2003-08-12 | 2005-02-16 | Lg Electronics Inc. | Method and apparatus for detecting residual drying time of clothes dryer |
| US20060242859A1 (en) * | 2005-04-28 | 2006-11-02 | Mabe Canada Inc. | Clothes dryer moisture sensing circuit |
| CA2507965A1 (en) * | 2005-05-19 | 2006-11-19 | Camco Inc. | Clothes dryer sensor compensation system and method |
| EP1790769A1 (en) * | 2005-11-23 | 2007-05-30 | Electrolux Home Products Corporation N.V. | Clothes tumble dryer and method for controlling the same |
-
2007
- 2007-12-25 EP EP07866318A patent/EP2126188A1/en not_active Withdrawn
- 2007-12-25 WO PCT/EP2007/064542 patent/WO2008077969A1/en not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5737852A (en) * | 1996-08-05 | 1998-04-14 | White Consolidated Industries, Inc. | Dryness control for clothes dryer |
| EP1507038A1 (en) * | 2003-08-12 | 2005-02-16 | Lg Electronics Inc. | Method and apparatus for detecting residual drying time of clothes dryer |
| US20060242859A1 (en) * | 2005-04-28 | 2006-11-02 | Mabe Canada Inc. | Clothes dryer moisture sensing circuit |
| CA2507965A1 (en) * | 2005-05-19 | 2006-11-19 | Camco Inc. | Clothes dryer sensor compensation system and method |
| EP1790769A1 (en) * | 2005-11-23 | 2007-05-30 | Electrolux Home Products Corporation N.V. | Clothes tumble dryer and method for controlling the same |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10786491B2 (en) | 2008-05-16 | 2020-09-29 | Novartis Ag | Immunomodulation by IAP inhibitors |
| CN102061598A (en) * | 2009-11-18 | 2011-05-18 | 松下电器产业株式会社 | clothes dryer |
| EP2336419A1 (en) * | 2009-11-18 | 2011-06-22 | Panasonic Corporation | Clothes dryer |
| US20120144692A1 (en) * | 2010-12-13 | 2012-06-14 | Samsung Electronics Co., Ltd. | Dryer |
| US8701309B2 (en) * | 2010-12-13 | 2014-04-22 | Samsung Electronics Co., Ltd. | Dryer |
| EP2738303A1 (en) * | 2012-11-28 | 2014-06-04 | Electrolux Home Products Corporation N.V. | A method for controlling a drying cycle of a laundry dryer |
| WO2014082909A1 (en) * | 2012-11-28 | 2014-06-05 | Electrolux Home Products Corporation N.V. | A method for controlling a drying cycle of a laundry dryer |
| US11377779B2 (en) | 2012-11-28 | 2022-07-05 | Electrolux Home Products Corporation N.V. | Method for controlling a drying cycle of a laundry dryer |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2126188A1 (en) | 2009-12-02 |
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