US20100235999A1 - Method for treatment of laundry and washing machine suitable for this purpose - Google Patents
Method for treatment of laundry and washing machine suitable for this purpose Download PDFInfo
- Publication number
- US20100235999A1 US20100235999A1 US12/665,778 US66577808A US2010235999A1 US 20100235999 A1 US20100235999 A1 US 20100235999A1 US 66577808 A US66577808 A US 66577808A US 2010235999 A1 US2010235999 A1 US 2010235999A1
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- United States
- Prior art keywords
- laundry
- lye
- heating
- washing
- washing machine
- 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.)
- Abandoned
Links
- 238000005406 washing Methods 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000010438 heat treatment Methods 0.000 claims abstract description 58
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000009736 wetting Methods 0.000 claims abstract description 7
- 239000006260 foam Substances 0.000 claims description 16
- 230000005670 electromagnetic radiation Effects 0.000 claims description 4
- 230000002706 hydrostatic effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229920000742 Cotton Polymers 0.000 description 4
- 239000003599 detergent Substances 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000009738 saturating Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000013528 metallic particle Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/04—Heating arrangements
-
- 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
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/56—Remaining operation time; Remaining operational 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
- 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
- D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
- D06F33/36—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of washing
-
- 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
-
- 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
- D06F39/40—Steam generating arrangements
Definitions
- the invention relates to a method for the treatment of laundry in a washing machine and a washing machine especially suited to carrying out said method.
- the laundry to be washed is treated by an amount of water which is sufficient to saturate the laundry with water, and an additional minimum amount of free liquor, generally two to three liters, which enables a material exchange between the liquor absorbed by the laundry and the free liquor.
- the setting of the amount of water is generally ensured in individual cases by a suitable method for regulating the water level in the drum and matching the amount to the absorption capacity of the laundry.
- the free liquor results from a subtraction of the amount of water absorbed by the laundry from the amount of water added to the washing machine.
- Cotton material holds approximately 200% of its own weight, so that a 6 kg load of cotton material absorbs approximately 12 liters of water.
- the energy consumption of a washing machine is essentially determined by the energy required to heat the water. A reduction in the amount of water in a washing machine would therefore be desirable, especially a reduction in the amount of free liquor.
- the heat transport from the heater into the laundry must be guaranteed by the free liquor. It is therefore difficult to achieve any reduction in the free liquor and thus a reduction in the energy consumption.
- An object of the invention is therefore the provision of a method for the treatment of laundry in a washing machine by means of which energy and/or water can be saved compared with the known methods.
- An object of the invention is furthermore to disclose a washing machine suitable for performing this method.
- the invention therefore refers to a method for the treatment of laundry using washing lye in a washing machine comprising a lye discharge system disposed on the base of a lye container, a rotary-mounted drum and a heating device for the direct heating of a load of laundry containing the washing lye, with the method comprising the following steps.
- step c) is not carried out until after step b) has been completed.
- the temperature T w of the water in step c) preferably does not exceed 30° C.
- the direct heating of the washing lye contained in the laundry preferably takes place by means of hot foam, hot air, steam and/or electromagnetic radiation which has/have been achieved by using the heating device.
- the heating device for direct heating of a load containing the washing lye can be fitted at various points in the inventive washing machine.
- the heating device is arranged in the lye container, especially in the drum.
- the hot foam is preferably generated by rotating the drum at a speed U 1 , which is less than the contact speed U A of the laundry, the heating device is switched on and the foam is heated.
- the contact speed U A of the laundry is the speed of the drum at which the laundry can lie against an inner wall of the drum, for example a speed in the 300 to 500 r.p.m. range.
- heating takes place using hot foam, a direct heating of the laundry can be achieved.
- the temperature gradient can be adjusted by means of the output of the heating device and the density of the foam. Because the surface of the laundry is heated first, it is advantageous if the laundry is intensively turned over. This can advantageously take place by a reversing operation of the drum at a speed of 30 to 100 r.p.m.
- the heating in step b) using electromagnetic radiation is preferably achieved by using a microwave heater and/or an infrared radiator (IR radiator).
- IR radiator infrared radiator
- the temperature gradient can be set by means of the microwave power.
- care must be taken to make sure that no short circuits occur due to any metallic particles contained in the laundry.
- certain man-made fibers may not be stable when heated using microwaves. Damage to laundry can occur, for instance where there are seams of polyester.
- the temperature gradient can be set by means of the output IR radiator. Especially because the surface of the textile items is heated, an intensive distribution of the laundry by a reversing operation of the drum is advantageous.
- the heating of the wetted laundry using hot air has the advantage that a temperature gradient can be set by means of which heat losses can be reduced.
- a heater known from a tumble dryer can be used to generate the hot air.
- the use of hot air is therefore particularly advantageous for combination units which combine the function of a washing machine and a tumble dryer.
- the air When heating using hot steam, the air can be saturated with steam (saturated steam) or be unsaturated at the applied temperature.
- saturated steam saturated steam
- unsaturated steam unsaturated at the applied temperature.
- the advantage of the use of hot steam is the improved heat transmission between the heater and water.
- the drum in step b) is preferably operated in a reversing operating mode for a period of 10 to 30 minutes at a speed of 30 to 100 r.p.m., preferably 40 to 70 r.p.m.
- a reversing operating mode for a period of 10 to 30 minutes at a speed of 30 to 100 r.p.m., preferably 40 to 70 r.p.m.
- step c) the dirt still remaining in the laundry and essentially only slightly dissolved in step b) can be rinsed out.
- step c With the completion of step c), the actual washing operation is generally finished. In a further program sequence, the laundry can then be rinsed and spun in a conventional wash program.
- the laundry of the load receives no more than the amount of water required for saturating the laundry with washing lye.
- the ratio of the amount (a2) to the amount (a3) is in the 0.5 to 0.9 range.
- the ratio of the amount (a2) to the amount (a3) is preferably in the 0.5 to 0.7 range.
- the saturation amount (a3) of water is approximately double a load (a1). From man-made fibers, which absorb water to a lesser degree, the saturation amount (a3) can be significantly lower.
- the values for the saturation amount (a3) are known per se, so that the amount of water (a2) can be preset in a wash program.
- the load (a1) can be determined using known means.
- a first sensor can be used to determine the amount of liquid or foam present in the lye container, it being possible for the sensor signal of said signal to be tracked during the process.
- a hydrostatic pressure p for example measured in step a) with the aid of the first sensor, can be compared with the filled amount of water or washing lye present.
- the laundry present in the drum soaks up water or washing lye, which therefore cannot contribute to an increase in the hydrostatic pressure.
- the batch of laundry (load)(a1) and its degree of saturation (degree of wetting) can be determined.
- the duration of the wetting in step a) can be very precisely adjusted to the predetermined batch of laundry. Therefore, a wetting of the batch of laundry adequate for the inventive method can generally be signaled to a program, so that step a) is ended and step b) can be started.
- monitoring of a temperature in the drum is advantageous.
- a second sensor for determining the temperature in the washing machine is fitted in the drum.
- the amount of water or washing lye to be used in the inventive method can be additionally reduced if during step a) and/or step b) the drum is rotated at a higher speed.
- the water/washing lye contained in the laundry is centrifuged and a reduction in the amount of water or washing lye required for saturation is achieved.
- the object of the invention is furthermore a washing machine with a program controller for controlling a program sequence, a drum rotatably mounted in a lye container, a lye discharge system arranged on the base of the lye container and a drive motor for the drum, with the washing machine additionally having a heating device for direct heating of a load (a1) of laundry containing the washing lye.
- the heating device is a device for generating steam or hot air.
- the heating device is a microwave heating device and/or an IR radiator.
- the inventive washing machine preferably has a first sensor for determining an amount of liquid or foam present in the lye container, with it being preferably possible to track the sensor signal during the process.
- a second sensor for determining a temperature in the drum is arranged in the inventive washing machine.
- the invention has the advantage that a substantially lower amount of water or washing lye is heated compared with a conventional method. This amount corresponds essentially to the amount necessary for saturating the laundry, which can be further reduced by a suitable fast rotation of the drum during the heating. This enables a substantial saving of water and energy.
- FIG. 1 is a schematic representation of the parts of an embodiment of a washing machine relevant for the following description, in which a method as described above can be carried out. Other embodiments are conceivable.
- the washing machine of the embodiment shown in FIG. 1 has a lye container 1 in which a drum 2 is rotatably mounted and can be driven by a drive motor 14 .
- the rotary axis 3 of the drum 2 is directed forwards and upwards from the horizontal at a small angle (e.g. 13°), so that easier access and a view of the inside of the drum 2 are provided.
- Laundry vanes 4 enable a distribution of the laundry 7 when the drum 2 is rotating.
- Scoops 5 enable an intensive rinsing of the cleaned laundry 7 with water 6 .
- a heating device 16 is fitted outside of the lye container 1 and drum 2 .
- the heating device 16 shown in FIG. 1 can especially provide hot air or steam.
- foam introduced in step b) of the method described above and generated with the laundry 7 by rotation of the drum 2 , can be heated by a heating device 13 arranged on the base of the lye container 1 .
- a heating device 13 arranged on the base of the lye container 1 .
- the rotating drum 2 can also entrain air in the washing lye, which is located in the lye container 1 under the drum 2 , and thus produce foam.
- the formation of foam can be assisted by adding a suitable detergent to the washing lye.
- the washing machine in FIG. 1 also has a lye supply system 8 , 9 , 10 , which includes a water connecting fitting for the domestic water supply system 8 , an electrically controlled valve 9 and a supply pipe 10 to the lye container 1 , with it also being possible for the supply pipe to be routed if necessary via a detergent flushing device (flushing tray) 11 , from which the supply water can transport a detergent, contained therein, into the lye container 1 .
- the valve 9 and also the heating device 13 , can be controlled by a controller (program controller) 12 relative to a program, which can be linked to a time program and/or the achievement of certain measured values of parameters within the washing machine such as the speed of the drum 2 .
- a lye discharge system 18 with any necessary pipes, including a drain valve and lye pump is, because it is known per se, shown only schematically as an overview by means of an arrow.
- a first sensor 15 for measurement of hydrostatic pressure p is provided in the lye container 1 .
- a second sensor 17 for determining a temperature is arranged in the drum. The second sensor 17 can also of course be located in an intermediate space between the lye container 1 and the drum 2 .
- step a) of the method described above for treating laundry 7 water is introduced in an amount which is adequate to fill a space between the lye container 1 and the drum 2 at a bottom end of the drum with water and be able to wet the laundry 7 .
- This washing lye is gradually absorbed by the laundry 7 until this has reached saturation wetting. There is no need to add further washing lye or water.
- the heating of the laundry 7 with the washing lye absorbed therein takes place directly and without the involvement of residual washing lye which has not been absorbed. In this way, dirt in the laundry 7 is initially dissolved, but not yet completely flushed out.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Description
- The invention relates to a method for the treatment of laundry in a washing machine and a washing machine especially suited to carrying out said method.
- With known washing methods, the laundry to be washed is treated by an amount of water which is sufficient to saturate the laundry with water, and an additional minimum amount of free liquor, generally two to three liters, which enables a material exchange between the liquor absorbed by the laundry and the free liquor. In this way, in particular, a transfer of heat between the heater—which heats the free liquor—and the laundry can take place. The setting of the amount of water is generally ensured in individual cases by a suitable method for regulating the water level in the drum and matching the amount to the absorption capacity of the laundry. The free liquor results from a subtraction of the amount of water absorbed by the laundry from the amount of water added to the washing machine. Cotton material holds approximately 200% of its own weight, so that a 6 kg load of cotton material absorbs approximately 12 liters of water.
- With this method, the continuous exchange between the absorbed liquor and the free liquor during heating causes the wash-active substances to be drawn into the laundry and the dissolved dirt to be removed. Because many kinds of soiling in or on the laundry can only be dissolved at higher temperatures, both the free and absorbed liquor has to be heated during the heating process.
- The energy consumption of a washing machine is essentially determined by the energy required to heat the water. A reduction in the amount of water in a washing machine would therefore be desirable, especially a reduction in the amount of free liquor. However, with a conventional washing machine the heat transport from the heater into the laundry must be guaranteed by the free liquor. It is therefore difficult to achieve any reduction in the free liquor and thus a reduction in the energy consumption.
- Known measures to reduce the free liquor in a drum-type washing machine are a reduction in a gap between the drum and the lye container or an external heating of the liquor in a flow heater. Common to all known measures is, however, the requirement to heat an additional, even if reduced, amount of free liquor.
- An object of the invention is therefore the provision of a method for the treatment of laundry in a washing machine by means of which energy and/or water can be saved compared with the known methods.
- An object of the invention is furthermore to disclose a washing machine suitable for performing this method.
- According to the invention, these objects are achieved by a method with the features of claim 1 and by a washing machine with the features of
claim 11. Preferred embodiments of the invention are given in the respective dependent claims. Furthermore, preferred embodiments of the method correspond to preferred embodiments of the washing machine and vice versa, even if not explained in detail here. - The invention therefore refers to a method for the treatment of laundry using washing lye in a washing machine comprising a lye discharge system disposed on the base of a lye container, a rotary-mounted drum and a heating device for the direct heating of a load of laundry containing the washing lye, with the method comprising the following steps.
-
- a) Adding the washing lye to the load (a1) in an amount (a2) smaller or equal to an amount (a3) required for saturation of the laundry with water (“saturation amount”), and wetting the laundry;
- b) Direct heating of the wetted laundry by means of the heating device; and
- c) Adding water at a temperature TW of not more than 40° C. for rinsing the washing lye from the laundry.
- In a preferred embodiment of this method, step c) is not carried out until after step b) has been completed.
- The temperature Tw of the water in step c) preferably does not exceed 30° C.
- The direct heating of the washing lye contained in the laundry preferably takes place by means of hot foam, hot air, steam and/or electromagnetic radiation which has/have been achieved by using the heating device.
- The heating device for direct heating of a load containing the washing lye can be fitted at various points in the inventive washing machine. Preferably, the heating device is arranged in the lye container, especially in the drum.
- Where the wetted laundry is heated by hot foam following step a), the hot foam is preferably generated by rotating the drum at a speed U1, which is less than the contact speed UA of the laundry, the heating device is switched on and the foam is heated. The contact speed UA of the laundry is the speed of the drum at which the laundry can lie against an inner wall of the drum, for example a speed in the 300 to 500 r.p.m. range.
- If heating takes place using hot foam, a direct heating of the laundry can be achieved. The temperature gradient can be adjusted by means of the output of the heating device and the density of the foam. Because the surface of the laundry is heated first, it is advantageous if the laundry is intensively turned over. This can advantageously take place by a reversing operation of the drum at a speed of 30 to 100 r.p.m.
- The heating in step b) using electromagnetic radiation is preferably achieved by using a microwave heater and/or an infrared radiator (IR radiator).
- When heating using microwaves, a direct heating of the wash lye (surfactant solution) absorbed in the laundry is also possible. In this case, the temperature gradient can be set by means of the microwave power. When using a microwave heater, care must be taken to make sure that no short circuits occur due to any metallic particles contained in the laundry. Furthermore, certain man-made fibers may not be stable when heated using microwaves. Damage to laundry can occur, for instance where there are seams of polyester.
- When heating using an IR radiator, direct heating of the laundry is also possible. The temperature gradient can be set by means of the output IR radiator. Especially because the surface of the textile items is heated, an intensive distribution of the laundry by a reversing operation of the drum is advantageous.
- The heating of the wetted laundry using hot air has the advantage that a temperature gradient can be set by means of which heat losses can be reduced.
- In principle, a heater known from a tumble dryer can be used to generate the hot air. The use of hot air is therefore particularly advantageous for combination units which combine the function of a washing machine and a tumble dryer.
- When heating using hot steam, the air can be saturated with steam (saturated steam) or be unsaturated at the applied temperature. The advantage of the use of hot steam is the improved heat transmission between the heater and water.
- In an inventive method, the drum in step b) is preferably operated in a reversing operating mode for a period of 10 to 30 minutes at a speed of 30 to 100 r.p.m., preferably 40 to 70 r.p.m. This achieves a particularly good distribution of the laundry so that the heating of the wetted laundry, which generally takes place on its surface, can take place as uniformly as possible due to the improved accessibility of the surface.
- In step c), the dirt still remaining in the laundry and essentially only slightly dissolved in step b) can be rinsed out.
- With the completion of step c), the actual washing operation is generally finished. In a further program sequence, the laundry can then be rinsed and spun in a conventional wash program.
- With the inventive method, the laundry of the load receives no more than the amount of water required for saturating the laundry with washing lye.
- Preferably, the ratio of the amount (a2) to the amount (a3) is in the 0.5 to 0.9 range. When using hot steam in step b), the ratio of the amount (a2) to the amount (a3) is preferably in the 0.5 to 0.7 range.
- For example, with a load (a1) of 6 kg of washing consisting of cotton material an amount of water (a2) of 10 liters (for example 8 liters where steam is used) could be used.
- For cotton material, the saturation amount (a3) of water is approximately double a load (a1). From man-made fibers, which absorb water to a lesser degree, the saturation amount (a3) can be significantly lower. The values for the saturation amount (a3) are known per se, so that the amount of water (a2) can be preset in a wash program.
- In this case, the load (a1) can be determined using known means. Advantageously therefore, in the inventive method a first sensor can be used to determine the amount of liquid or foam present in the lye container, it being possible for the sensor signal of said signal to be tracked during the process.
- To determine the load (a1), a hydrostatic pressure p, for example measured in step a) with the aid of the first sensor, can be compared with the filled amount of water or washing lye present. The laundry present in the drum soaks up water or washing lye, which therefore cannot contribute to an increase in the hydrostatic pressure. By comparing the measured hydrostatic pressure p and/or the time gradient of the hydrostatic pressure p with corresponding values stored in a program controller of a washing machine for the saturation of laundry, the batch of laundry (load)(a1) and its degree of saturation (degree of wetting) can be determined. As a result, the duration of the wetting in step a) can be very precisely adjusted to the predetermined batch of laundry. Therefore, a wetting of the batch of laundry adequate for the inventive method can generally be signaled to a program, so that step a) is ended and step b) can be started.
- With the inventive method, monitoring of a temperature in the drum is advantageous. In this case it is preferable if a second sensor for determining the temperature in the washing machine is fitted in the drum.
- The amount of water or washing lye to be used in the inventive method can be additionally reduced if during step a) and/or step b) the drum is rotated at a higher speed. In this case, for instance, the water/washing lye contained in the laundry is centrifuged and a reduction in the amount of water or washing lye required for saturation is achieved.
- The object of the invention is furthermore a washing machine with a program controller for controlling a program sequence, a drum rotatably mounted in a lye container, a lye discharge system arranged on the base of the lye container and a drive motor for the drum, with the washing machine additionally having a heating device for direct heating of a load (a1) of laundry containing the washing lye.
- In a first preferred embodiment, the heating device is a device for generating steam or hot air. In a second preferred embodiment, the heating device is a microwave heating device and/or an IR radiator.
- The inventive washing machine preferably has a first sensor for determining an amount of liquid or foam present in the lye container, with it being preferably possible to track the sensor signal during the process.
- It is furthermore preferred if a second sensor for determining a temperature in the drum is arranged in the inventive washing machine.
- The invention has the advantage that a substantially lower amount of water or washing lye is heated compared with a conventional method. This amount corresponds essentially to the amount necessary for saturating the laundry, which can be further reduced by a suitable fast rotation of the drum during the heating. This enables a substantial saving of water and energy.
- An exemplary embodiment of the invention is explained in more detail in the following with the aid of
FIG. 1 . -
FIG. 1 is a schematic representation of the parts of an embodiment of a washing machine relevant for the following description, in which a method as described above can be carried out. Other embodiments are conceivable. - The washing machine of the embodiment shown in
FIG. 1 has a lye container 1 in which adrum 2 is rotatably mounted and can be driven by adrive motor 14. The rotary axis 3 of thedrum 2 is directed forwards and upwards from the horizontal at a small angle (e.g. 13°), so that easier access and a view of the inside of thedrum 2 are provided. Laundry vanes 4 enable a distribution of the laundry 7 when thedrum 2 is rotating.Scoops 5 enable an intensive rinsing of the cleaned laundry 7 withwater 6. - With the embodiment shown in
FIG. 1 , aheating device 16 is fitted outside of the lye container 1 anddrum 2. Theheating device 16 shown inFIG. 1 can especially provide hot air or steam. - As an alternative, foam, introduced in step b) of the method described above and generated with the laundry 7 by rotation of the
drum 2, can be heated by aheating device 13 arranged on the base of the lye container 1. When the rum is rotated, the washing lye is partially centrifuged out of the laundry 7 and intensively mixed with air so as to produce foam. Therotating drum 2 can also entrain air in the washing lye, which is located in the lye container 1 under thedrum 2, and thus produce foam. The formation of foam can be assisted by adding a suitable detergent to the washing lye. - The washing machine in
FIG. 1 also has alye supply system valve 9 and asupply pipe 10 to the lye container 1, with it also being possible for the supply pipe to be routed if necessary via a detergent flushing device (flushing tray) 11, from which the supply water can transport a detergent, contained therein, into the lye container 1. Thevalve 9, and also theheating device 13, can be controlled by a controller (program controller) 12 relative to a program, which can be linked to a time program and/or the achievement of certain measured values of parameters within the washing machine such as the speed of thedrum 2. - A
lye discharge system 18 with any necessary pipes, including a drain valve and lye pump is, because it is known per se, shown only schematically as an overview by means of an arrow. Afirst sensor 15 for measurement of hydrostatic pressure p is provided in the lye container 1. Furthermore, asecond sensor 17 for determining a temperature is arranged in the drum. Thesecond sensor 17 can also of course be located in an intermediate space between the lye container 1 and thedrum 2. - In the embodiment shown here, in step a) of the method described above for treating laundry 7, water is introduced in an amount which is adequate to fill a space between the lye container 1 and the
drum 2 at a bottom end of the drum with water and be able to wet the laundry 7. This washing lye is gradually absorbed by the laundry 7 until this has reached saturation wetting. There is no need to add further washing lye or water. The heating of the laundry 7 with the washing lye absorbed therein takes place directly and without the involvement of residual washing lye which has not been absorbed. In this way, dirt in the laundry 7 is initially dissolved, but not yet completely flushed out. This does not take place until the following step for which additionally added water is used, which is not or may not be very highly heated, which is not required to assist further in dissolving the dirt, but instead only to flushing it out of the laundry 7. A comparatively low temperature of a maximum of 40° C. is sufficient for this, possibly even only a maximum of 30° C. The required heating energy is also very low because the heating energy is initially required to be used only for the liquor absorbed in the laundry 7 to be treated.
Claims (16)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007028212.7A DE102007028212B4 (en) | 2007-06-20 | 2007-06-20 | Process for treating items of laundry and washing machine suitable for this purpose |
DE102007028212.7 | 2007-06-20 | ||
PCT/EP2008/056472 WO2008155196A2 (en) | 2007-06-20 | 2008-05-27 | Method for the treatment of laundry, and washing machine suitable for this purpose |
Publications (1)
Publication Number | Publication Date |
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US20100235999A1 true US20100235999A1 (en) | 2010-09-23 |
Family
ID=39967941
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/665,778 Abandoned US20100235999A1 (en) | 2007-06-20 | 2008-05-27 | Method for treatment of laundry and washing machine suitable for this purpose |
Country Status (8)
Country | Link |
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US (1) | US20100235999A1 (en) |
EP (1) | EP2158350B1 (en) |
CN (1) | CN101711295B (en) |
DE (1) | DE102007028212B4 (en) |
EA (1) | EA017035B1 (en) |
ES (1) | ES2686139T3 (en) |
PL (1) | PL2158350T3 (en) |
WO (1) | WO2008155196A2 (en) |
Cited By (1)
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US20150267341A1 (en) * | 2014-03-24 | 2015-09-24 | General Electric Company | Washing machine appliances and methods for operating the same |
Families Citing this family (7)
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EP2540896B1 (en) | 2011-06-30 | 2016-04-13 | Electrolux Home Products Corporation N.V. | Method for washing laundry in a laundry washing machine |
DE102013225113B4 (en) * | 2013-12-06 | 2019-01-31 | BSH Hausgeräte GmbH | Process for the treatment of laundry with improved wetting phase and suitable washing machine for this purpose |
WO2016040966A1 (en) * | 2014-09-10 | 2016-03-17 | King, Denis John | Washing machine |
CN114045640B (en) * | 2016-08-25 | 2024-01-19 | Lg电子株式会社 | Clothes treating apparatus |
CN112064291B (en) * | 2019-05-23 | 2023-11-17 | 博西华电器(江苏)有限公司 | Washing machine and control method thereof |
CN112411124B (en) * | 2020-10-28 | 2021-11-05 | 珠海格力电器股份有限公司 | Rinsing control method of clothes treatment equipment and clothes treatment equipment |
DE102023102782A1 (en) | 2023-02-06 | 2024-08-08 | Zöllner GmbH | Procedure for cleaning laundry and washing system |
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- 2008-05-27 PL PL08760070T patent/PL2158350T3/en unknown
- 2008-05-27 ES ES08760070.6T patent/ES2686139T3/en active Active
- 2008-05-27 CN CN200880020687.8A patent/CN101711295B/en active Active
- 2008-05-27 US US12/665,778 patent/US20100235999A1/en not_active Abandoned
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US20150267341A1 (en) * | 2014-03-24 | 2015-09-24 | General Electric Company | Washing machine appliances and methods for operating the same |
US10745842B2 (en) * | 2014-03-24 | 2020-08-18 | Haier Us Appliance Solutions, Inc. | Washing machine appliances and methods for operating the same |
Also Published As
Publication number | Publication date |
---|---|
DE102007028212A1 (en) | 2008-12-24 |
ES2686139T3 (en) | 2018-10-16 |
CN101711295A (en) | 2010-05-19 |
EA201070016A1 (en) | 2010-06-30 |
CN101711295B (en) | 2014-11-05 |
WO2008155196A3 (en) | 2009-02-19 |
EP2158350B1 (en) | 2018-07-11 |
PL2158350T3 (en) | 2019-02-28 |
WO2008155196A2 (en) | 2008-12-24 |
EP2158350A2 (en) | 2010-03-03 |
DE102007028212B4 (en) | 2022-03-24 |
EA017035B1 (en) | 2012-09-28 |
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