EP1236826A2 - A method for changing the program cycle of a household dryer - Google Patents
A method for changing the program cycle of a household dryer Download PDFInfo
- Publication number
- EP1236826A2 EP1236826A2 EP02003232A EP02003232A EP1236826A2 EP 1236826 A2 EP1236826 A2 EP 1236826A2 EP 02003232 A EP02003232 A EP 02003232A EP 02003232 A EP02003232 A EP 02003232A EP 1236826 A2 EP1236826 A2 EP 1236826A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- program
- laundry
- moisture
- time
- cycle
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000001035 drying Methods 0.000 claims abstract description 30
- 239000004744 fabric Substances 0.000 claims description 4
- 230000037303 wrinkles Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 7
- 238000011156 evaluation Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
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
- 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
-
- 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
- D06F2101/00—User input for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2101/20—Operation modes, e.g. delicate laundry washing programs, service modes or refreshment cycles
-
- 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
- D06F2103/02—Characteristics of laundry or load
- D06F2103/04—Quantity, e.g. weight or variation of 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
-
- 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
- D06F2105/54—Changing between normal operation mode and special operation modes, e.g. service mode, component cleaning mode or stand-by mode
-
- 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
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/62—Stopping or disabling machine operation
-
- 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
Definitions
- the invention relates to a method for changing the program cycle of a household dryer while drying laundry, wherein the program can be changed and canceled depending on the moisture of the laundry and the elapsed time of the selected program, wherein the laundry comes into contact with moisture sensors during the drying process, which moisture sensors measure the contact frequency and moisture of the laundry and provide measured values for changing the program, indicating the remaining drying time and canceling shutting off the initiated program.
- a specific laundry parameter can be taken from the laundry after it was removed from the washer, that can be used to select the drying program when the laundry is placed in the dryer. This method is very cumbersome.
- Another method keeps - after the start - at least three widely divergent measurement variables, such as electrical laundry resistance, time characteristic of the temperature at the loading side of the drum, temperature differences/temperature increase at the loading side of the drum in a fixed time frame, ambient temperature to determine the expected drying time of a dryer.
- This method requires complex sensor and analysis work.
- the object of the invention is to provide a method of the kind indicated in the preamble that uses simple sensor and circuit configuration to obtain a measuring value for a large range of the laundry load, which measured value can be used with satisfactory reproducibility to change the program cycle, display the remaining drying time and shut off the household dryer.
- this objective is achieved in that the moisture sensors are attached to lateral grids provided at a level above the lowest point of the laundry drum between door and laundry drum, that the time intervals between the individual contacts with pre-determined minimum moisture are recorded by the moisture sensors and that these time intervals are used to calculated statistical means, and that the changes of the program parameters, the display of the remaining drying time and the shut-off of the program are calculated based on the statistical means of the time intervals calculated in this way.
- the moisture sensors are disposed outside of the laundry drum and attached to the slanted grid between the door and the laundry drum and are configured in a position to the lowest point of the laundry drum, which is higher. The result of this positioning is that the more frequently pieces of laundry fall laterally on the grid and slide over it, the larger the load volume of laundry .
- the laundry contacts with the moisture sensors increase in proportion to the load volume.
- the statistically derived means of the time intervals of the contacts result in uniquely distinguishable and evaluable measurement variables for changing the program cycle, deriving the display for the remaining drying time and shutting-off the household dryer. This method results in a significantly more informational determination of frequency and thus in a more accurate method.
- One embodiment may provide that - when the machine is switched on - the initial values for the drying cycle are preset by an experimentally determined, designated standard program preset by the user's program selection and device-specific options (such as dryness, cool-down cycle, wrinkle protection).
- the drying cycle can be initiated with this start program, and then it can be determined that the intervals between the individual contacts with the preset minimum moisture is detected only after the preset time after the program start.
- the recorded statistical means of the time intervals of the individual contacts is used as a measure for the load volume.
- the measurement can be performed such that the measured values of the moisture sensors are determined continuously or in intervals and the allocated remaining drying time is displayed accordingly.
- the remaining moisture of the laundry is measured after a pre-set part of the program cycle time and/or compared with the selected final degree of dryness.
- the household dryer can be shut off if both values match.
- the method can be further improved such that the recorded measured values of the moisture sensors are taken into consideration depending on the different fabric types of the loaded laundry with differing weights for changing the program cycle time, whereas the fabric types can be pre-set via the program settings.
- laundry drum 1 is rotated around an axis 8.
- Arrow 2 symbolizes an air current that is generated by means of a blower 7 and is guided in an air channel 4 via a heater 3 into the laundry drum 1.
- the laundry drum 1 is filled with laundry items 16 that are carried by blades 11 that repeatedly drop them into the bottom area of the laundry drum 1.
- a grid 14 transitions into the outgoing air channel as shown by the arrow 5.
- the heated air 13 passes into the interior of the laundry drum 1, removes moisture from the moist laundry, and, as shown by the arrow 15, exits the laundry drum 1 via the grid 14.
- the grid 14 is disposed between the door 6 and the laundry drum 1 and is equipped with two moisture sensors 9 and 10 at a distance from each other.
- the laundry items 16 falling in the laundry drum 1 are guided increasingly over grid 14 on moisture sensors 9 and 10 - depending on the laundry load - which moisture sensors are used as electrodes to measure resistance, and the laundry falls back into the laundry drum 1.
- the connection via the laundry items 16 must fall below a resistance value that is determined by the minimum moisture of the laundry item 16. Only then is the contact with the moisture sensors registered and used to change the program cycle time.
- the preset resistance value and hence the preset minimum moisture can vary depending on the program selection and specific user settings and is contained in the initial value of the designated, experimentally determined standard program, whereas the program cycle is also preset in the standard program, and is changed after a preset time for example, after a few minutes depending on the measured values determined by the moisture sensors. This procedure can be repeated at further intervals.
- the moisture sensors 9 and 10 are connected with an evaluation circuit in the program control and can thus act directly upon it.
- the number of times the laundry items 16 contact the moisture sensors 9 and 10 are counted, but only have an effect when the required minimum moisture is measured.
- the progress of the drying cycle is accordingly monitored and changed, whereby the weighting of the change can be dependent on the selected program.
- the absolute moisture can be measured after a preset part of the overall program cycle time and compared with a desired degree of drying which the user presets when selecting the program. When the degree of drying is reached, the drying cycle can also be terminated prematurely, and the cooling down and shutting off process of the household dryer can be started.
- the program cycle time of the designated standard program is displayed at the beginning of the drying cycle and is correspondingly changed when changes in the cycle time occur.
- the user is constantly informed about the program cycle time at the beginning and after the changes occur.
- the intervals between the individual contacts of moisture sensors 9 and 10 are measured in the evaluation circuit that is downstream of moisture sensors 9 and 10, and a statistical mean per interval is derived.
- the course of this statistical mean is almost proportionate to the laundry load, which means that the statistical mean can be used to a large extent as a measurement variable for the change of the program cycle, the derivation of the display of the remaining drying time and the shut-off of the household dryer.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
Description
Claims (9)
- A method for changing the program cycle of a household dryer while drying laundry, wherein the program can be changed and cancelled depending on the moisture of the laundry and the elapsed time of the program, wherein the laundry comes into contact with moisture sensors during the drying process, said moisture sensors record the contact frequency and moisture of the laundry and provide measured values for changing the program, displaying the remaining drying time and canceling the initiated program,
characterized in that
moisture sensors (9, 10) are attached to lateral grids (14) provided between door (6) and laundry drum (1) at a level above the lowest point of the laundry drum (1),
that moisture sensors (9, 10) can determine the intervals between the individual contacts with pre-set minimum moisture from which the statistical means can be derived, and
that the statistical means of the intervals that were obtained can be used to derive the changes of the program parameters, the display of the remaining drying time and the shut-off of the program. - A method according to Claim 1,
characterized in that
at program start, the initial values for the drying cycle are preset by an experimentally determined, designated standard program preset by the user's program selection and device-specific options (such as dryness, cool-down cycle, wrinkle protection). - A method according to Claims 1 or 2,
characterized in that
the intervals of the individual contacts with the pre-set minimum moisture are only determined after a pre-set time after program start (for instance a couple of minutes) via the moisture sensors (9, 10). - A method according to Claims 1 to 3,
characterized in that
the determined statistical mean is used as a measure for the load of the laundry drum (1). - A method according to Claims 1 to 4,
characterized in that
the first change of the pre-set standard program is made after a time that has been or can be pre-set (for instance 10 to 20 minutes) after the start of the drying cycle. - A method according to Claims 1 to 5,
characterized in that
the measured values of the moisture sensors (9, 10) can be determined continuously or in intervals and the allocated remaining drying time is displayed accordingly. - A method according to Claims 1 to 6,
characterized in that
after the pre-set portion (for instance 75 to 90%) of the program cycle time has elapsed, the remaining moisture of the laundry is measured and compared to a desired and/or selected final level of dryness. - A method according to Claims 1 to 7,
characterized in that
a cool-down cycle is started, if the statistical mean is lacking, and
the household dryer is shut off after the cool-down cycle is completed. - A method according to Claims 1 to 8,
characterized in that
the determined measured values of the moisture sensors (9, 10) are weighted differently depending on the different types of fabric in the laundry load (16), wherein the said fabric types are preset by the program settings.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10110165 | 2001-03-02 | ||
| DE10110165 | 2001-03-02 | ||
| DE10200975A DE10200975C2 (en) | 2001-03-02 | 2002-01-12 | Procedure for changing the program sequence for a household clothes dryer |
| DE10200975 | 2002-01-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1236826A2 true EP1236826A2 (en) | 2002-09-04 |
| EP1236826A3 EP1236826A3 (en) | 2003-10-01 |
Family
ID=26008667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02003232A Withdrawn EP1236826A3 (en) | 2001-03-02 | 2002-02-20 | A method for changing the program cycle of a household dryer |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP1236826A3 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1473402A1 (en) * | 2003-04-28 | 2004-11-03 | Lg Electronics Inc. | Sensor assembly for automatic dryer |
| EP1736761A1 (en) * | 2005-06-24 | 2006-12-27 | Electrolux Home Products Corporation N.V. | Humidity sensor and dryer with a humidity sensor |
| EP1621663A3 (en) * | 2004-06-16 | 2007-07-11 | Samsung Electronics Co., Ltd. | Clothes dryer and method of displaying drying time on the same |
| CN109267307A (en) * | 2017-07-18 | 2019-01-25 | 无锡小天鹅股份有限公司 | Dry method for confirming remaining time, equipment and device for clothing processing |
| CN110295490A (en) * | 2019-06-14 | 2019-10-01 | 青岛海尔滚筒洗衣机有限公司 | A kind of clothes drying method and clothes treatment device |
| CN113136716A (en) * | 2020-01-19 | 2021-07-20 | 青岛海尔滚筒洗衣机有限公司 | Clothes dryer load weight obtaining method and device, clothes dryer and storage medium |
| CN113417122A (en) * | 2021-06-25 | 2021-09-21 | 无锡飞翎电子有限公司 | Clothes drying equipment, control method and device thereof and storage medium |
| CN114775254A (en) * | 2022-04-13 | 2022-07-22 | Tcl家用电器(合肥)有限公司 | Control method and control device of clothes dryer, storage medium and clothes dryer |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3300869A (en) * | 1964-02-28 | 1967-01-31 | Maytag Co | Clothes drier structure and control |
| US4738034A (en) * | 1985-12-16 | 1988-04-19 | Kabushiki Kaisha Toshiba | Drying machine |
| US4899464A (en) * | 1988-11-14 | 1990-02-13 | Whirlpool Corporation | Dryer outlet grill with sensor |
| JP3159599B2 (en) * | 1994-04-26 | 2001-04-23 | 株式会社東芝 | Dryer |
| US5764542A (en) * | 1996-01-11 | 1998-06-09 | Eaton Corporation | Noise filtering utilizing running average |
| WO1997032071A1 (en) * | 1996-02-29 | 1997-09-04 | Southcorp Whitegoods Pty. Ltd. | A drying apparatus |
| DE19736419A1 (en) * | 1997-08-21 | 1999-02-25 | Bosch Siemens Hausgeraete | Method for determining the load of a tumble dryer |
| DE19802616A1 (en) * | 1998-01-24 | 1999-07-29 | Aeg Hausgeraete Gmbh | Domestic laundry dryer has control means |
-
2002
- 2002-02-20 EP EP02003232A patent/EP1236826A3/en not_active Withdrawn
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1473402A1 (en) * | 2003-04-28 | 2004-11-03 | Lg Electronics Inc. | Sensor assembly for automatic dryer |
| US6941678B2 (en) | 2003-04-28 | 2005-09-13 | Lg Electronics Inc. | Sensor assembly for automatic dryer |
| EP1621663A3 (en) * | 2004-06-16 | 2007-07-11 | Samsung Electronics Co., Ltd. | Clothes dryer and method of displaying drying time on the same |
| EP1736761A1 (en) * | 2005-06-24 | 2006-12-27 | Electrolux Home Products Corporation N.V. | Humidity sensor and dryer with a humidity sensor |
| EP1744152A1 (en) | 2005-06-24 | 2007-01-17 | Electrolux Home Products N.V. | Humidity sensor and dryer with a humidity sensor |
| CN109267307B (en) * | 2017-07-18 | 2022-07-15 | 合肥美的洗衣机有限公司 | Drying remaining time determining method and device and clothes processing device |
| CN109267307A (en) * | 2017-07-18 | 2019-01-25 | 无锡小天鹅股份有限公司 | Dry method for confirming remaining time, equipment and device for clothing processing |
| CN110295490A (en) * | 2019-06-14 | 2019-10-01 | 青岛海尔滚筒洗衣机有限公司 | A kind of clothes drying method and clothes treatment device |
| CN110295490B (en) * | 2019-06-14 | 2023-10-27 | 青岛海尔洗涤电器有限公司 | Clothes drying method and clothing processing equipment |
| CN113136716A (en) * | 2020-01-19 | 2021-07-20 | 青岛海尔滚筒洗衣机有限公司 | Clothes dryer load weight obtaining method and device, clothes dryer and storage medium |
| CN113417122A (en) * | 2021-06-25 | 2021-09-21 | 无锡飞翎电子有限公司 | Clothes drying equipment, control method and device thereof and storage medium |
| CN114775254A (en) * | 2022-04-13 | 2022-07-22 | Tcl家用电器(合肥)有限公司 | Control method and control device of clothes dryer, storage medium and clothes dryer |
| CN114775254B (en) * | 2022-04-13 | 2024-03-12 | Tcl家用电器(合肥)有限公司 | Control method, control device, storage medium and clothes dryer of clothes dryer |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1236826A3 (en) | 2003-10-01 |
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