CN106536809A - Laundry care appliance comprising a lye-generating device - Google Patents

Abstract

The invention relates to a laundry care appliance (100) for laundry care, comprising a heat-generating device (101) for generating heat, a lye-generating device (103) for generating washing lye, and a lye container (105) for receiving the washing lye. The lye-generating device (103) is designed to generate a first washing lye (321) having a first concentration of a detergent in a first segment (313) of a first time period (309), to generate a second washing lye (329) having a second concentration of the detergent in a second segment (315) of the first time period (309), wherein the first concentration is greater than the second concentration, and to generate a third washing lye (341) having a third concentration of the detergent in a first segment (319) of a second time period (311), wherein the third concentration is lower than the second concentration. The heat generating device (101) is designed to generate a first temperature (337) of washing lye in the first time period (309) and a second temperature of washing lye in the second time period (311), wherein the first temperature (337) is higher than the second temperature.

Description

Laundry treatment appliance including liquid generating device

technical field

The present invention relates to a laundry treating appliance comprising a liquid generating device.

Background technique

During the treatment of laundry in a laundry treatment appliance, such as a washing machine, a wetting phase takes place before the start of the washing phase, in which the dry laundry is wetted with washing liquid in the washing drum of the laundry treatment appliance. The wash liquor is then typically heated to the desired wash temperature and the wash phase begins.

The wetting efficiency of the washing liquid on the clothes is related to the amount of clothes in the washing machine. If the washing drum of the washing machine is fully loaded with laundry, usually only the outer areas of the laundry that are in contact with the washing liquid are sufficiently wetted during the wetting phase. When the washing drum is fully loaded with laundry, the inner area of the laundry in the washing drum usually remains dry without being sufficiently wetted by the washing liquid. Therefore, when the washing machine is fully loaded, the interior area of the laundry is often not sufficiently cleaned.

Contents of the invention

An object of the present invention is to provide a laundry treating appliance that enables more efficient laundry treatment.

This object is achieved by a subject matter having the features according to the independent claims. Advantageous embodiments of the invention form the subject matter of the drawings, the description and the dependent claims.

The invention is based on the recognition that adding a wash liquor with a higher concentration of detergent and a higher temperature in the first time period compared to the wash liquor added in the second time period results in better wetting of the laundry improve. This results in improved laundry handling.

According to one aspect of the present invention, this object is achieved by a laundry treating appliance for treating laundry, said laundry treating appliance comprising heat generating means for generating heat, liquid generating means for generating washing liquid and a An outer tub for receiving washing liquid, wherein the liquid generating device is designed to be able to generate a first washing liquid in a first section of a first time period, and the first washing liquid has a cleaning agent of a first concentration; A second wash solution is produced in a second section of a time period, the second wash solution has a second concentration of detergent, wherein the first concentration is higher than the second concentration; A third washing liquid is produced in the section, the third washing liquid has a cleaning agent of a third concentration, wherein the third concentration is lower than the second concentration, and wherein the heating device is designed to be able to form the washing liquid in the first time period The first temperature of the washing liquid is formed during the second time period, wherein the first temperature is higher than the second temperature.

As a result, the following technical advantage is achieved: compared with the second time period of the washing process, the higher temperature of the washing liquid and the higher detergent concentration in the washing liquid during the first time period of the washing process ensure that The outer and inner areas of the laundry to be treated are completely wetted with the washing liquid.

According to one embodiment, the first temperature of the washing liquid during the first time period is higher than the second temperature of the washing liquid during the second time period. The liquid generating device is designed to be able to generate a first washing liquid and a second washing liquid having a first concentration and a second concentration of a cleaning agent during a first time period, the first concentration and the second concentration of the cleaning agent being higher than that during the washing A third concentration of the third wash solution produced during the second time period of the process.

In a laundry treatment appliance fully loaded with laundry, the different detergent concentrations and temperatures of the washing liquid during multiple time periods ensure that the washing liquid not only wets the outer areas of the laundry, but that the washing liquid is also able to penetrate into the interior of the laundry area. As a result, all areas of the laundry are completely wetted and a sufficient cleaning action is obtained.

By "laundry treatment appliance" is understood an appliance for the treatment of laundry. This could be a large appliance such as a washing machine, washer-dryer or clothes dryer. In particular, the laundry treatment appliance under consideration here is a domestic appliance, ie a laundry treatment appliance for domestic use. With the help of this laundry treatment appliance used in the home, textiles that are commonly found in the home are treated in quantities that are common in the home.

In an advantageous embodiment of the laundry treatment appliance, the liquid generating device is designed to generate a fourth washing liquid having a fourth concentration of cleaning agent in a third section of the first time period, wherein The fourth concentration is lower than the second concentration.

Thereby, the technical advantage is achieved that an additional third segment is introduced in the first time segment of the washing process, during which third segment an additional amount of washing liquid is supplied to the laundry. In the first and second segments of the first time period, a first wash solution is produced at a first concentration and a second wash solution is produced at a second concentration.

By distributing the generation and addition of wash liquor into different segments of the first time period, the outer and inner areas of the laundry are moistened in an efficient manner. During a third segment of the first time period, a further fourth wash liquid is generated, an additional amount of wash liquid is supplied to the laundry in the laundry treating appliance. By adding this additional amount of wash liquor, efficient wetting of all areas of the laundry in the laundry treatment appliance is achieved in an efficient manner.

A fourth concentration of the fourth washing liquid that may be supplied during the third section of the first time period is lower than a second concentration of the second washing liquid supplied during the second section of the first time period. Therefore, the concentration of the cleaning agent in the washing liquid supplied in the first, second and third sections of the first time period continues to decrease. The decrease in the concentration of detergent in the wash liquor correlates to the increase in the volume of wash liquor that wets the laundry during the second time period. By increasing the volume of washing liquid, the outer and inner areas of the laundry in the laundry treatment appliance are completely wetted.

In a further advantageous embodiment of the laundry treatment appliance, the liquid generating device is designed to be able to generate a further washing liquid with a further cleaning agent concentration in further sections of the first time period. In particular, the liquid generating device can be designed so that in the fourth, fifth, sixth, seventh, eighth or ninth time period of the first time period, a , The fifth, sixth, seventh, eighth, ninth or tenth washing solution of the ninth or tenth detergent concentration. According to one embodiment, said segments of the first time period may be consecutive.

Thereby, the technical advantage is achieved that further segments can be introduced in the first time period, during which segments a further quantity of washing liquid is supplied to the laundry. By adding an additional amount of washing liquid, the outer and inner areas of the laundry in the laundry treatment appliance are effectively moistened.

In a further advantageous embodiment of the laundry treatment appliance, the liquid generating device is designed to be able to vary the concentration of cleaning agent in the washing liquid in the outer tub by feeding a certain amount of washing liquid into the outer tub.

Thereby, the following technical advantage is achieved: the concentration of the cleaning agent in the washing liquid in the tub can be varied in a flexible manner by means of the liquid generating device. A greater concentration of detergent in the washing liquid in the outer tub can be achieved by supplying a certain amount of washing liquid with a higher concentration of detergent than in the washing liquid in the outer tub. The reduction of the detergent concentration of the washing liquid in the outer tub may be achieved by supplying a certain amount of washing liquid having a lower detergent concentration than that in the washing liquid in the outer tub.

Thus, the detergent concentration of the washing liquid in the outer tub can be adjusted as required. In order to ensure a lower consumption of detergent, a low concentration of detergent in the outer tub can be chosen. In order to be able to clean very soiled laundry thoroughly and to completely moisten the outer and inner areas of the laundry, a high concentration of cleaning agent in the outer tub can be selected.

In another advantageous embodiment of the laundry treatment appliance, the laundry treatment appliance comprises a washing drum located in an outer tub, and the liquid generating device is designed to be able to To wash the type of laundry in the drum, a certain amount of washing liquid is supplied into the tub.

Thereby, the following technical advantage is achieved: the amount of washing liquid supplied by the liquid generating device is adjusted according to the amount and type of laundry located in the washing drum. In a wash drum fully loaded with laundry, a greater amount of wash liquid has to be produced in order to completely wet the outer and inner areas of the laundry in the wash drum than in a wash drum with a smaller laundry load.

In addition, the type of laundry also affects the amount of wash liquid required. For garment types that can absorb large amounts of fluid, such as towels, a large amount of wash liquid is required to completely wet the garment. For garment types that can absorb small amounts of fluid, such as polyester, a small amount of wash liquid is required to completely wet the garment. By flexibly controlling the addition of washing liquid according to the amount or type of laundry, it can ensure that the outer and inner areas of the clothes are completely wetted.

In a further advantageous embodiment of the laundry treatment appliance, the liquid generating device is designed to be able to supply a minimum volume of washing liquid into the tub, wherein the minimum volume is greater than the dead volume of the tub.

Thereby, the technical advantage is achieved that there is always a minimum volume of washing liquid in the tub sufficient to wet the laundry located in the washing drum of the laundry treatment appliance. The dead volume of the outer tub corresponds to a volume of the washing liquid in the outer tub that is sufficient for the washing drum to be in contact with the washing liquid without the laundry in the washing drum being in contact with the washing liquid.

Therefore, during laundry treatment, the laundry in the washing drum is in contact with the washing liquid and thereby fully wetted with the washing liquid, and therefore, a minimum volume of washing liquid larger than the dead volume of the outer tub must exist in the outer tub. In a traditional laundry treatment appliance, the dead volume is less than 10% of the total volume of the outer tub, especially less than 5% of the total volume of the outer tub. Make sure the outer and inner areas of the garment are completely wet by using an adequate minimum volume of washing liquid.

In a further advantageous embodiment of the laundry treatment appliance, the minimum volume of the amount of washing liquid supplied into the tub is greater than the sum of the dead volume of the tub and the additional volume of the tub.

Hereby, the technical advantage is achieved that the minimum volume of washing liquid in the outer tub includes an additional back-up supply of washing liquid by taking into account the additional volume of the outer tub in addition to the dead volume of the outer tub. This backup supply ensures that there is a sufficiently large minimum volume of wash liquid in the tub to ensure adequate wetting of the laundry in the wash drum. The additional volume of the outer tub can be any volume of washing liquid, preferably 1% to 10% of the total volume of the outer tub.

In a further advantageous embodiment of the laundry treating appliance, the second concentration of detergent in the second wash liquor is 50% to 99% of the first concentration of detergent in the first wash liquor.

Thereby, the following technical advantage is achieved: compared with the first concentration of cleaning agent of the first washing liquid, the lower second concentration of cleaning agent of the second washing liquid makes the outer and inner areas of the laundry in the laundry treatment appliance Wetting is improved. By adding the second wash liquor with a lower detergent concentration compared to the detergent concentration of the first detergent, a greater proportion of water is present in the second wash liquor, which results in improved wetting of the laundry.

In a further advantageous embodiment of the laundry treatment appliance, the fourth concentration of cleaning agent in the washing liquid is lower than the first concentration of cleaning agent in the first washing liquid, wherein the fourth concentration is in particular 50% of the first concentration. % to 99%.

As a result, the following technical advantage is achieved: compared with the first concentration of cleaning agent of the first washing liquid, the lower fourth concentration of cleaning agent of the fourth washing liquid results in improved wetting of the inner and outer regions of the laundry . By adding a fourth washing liquid having a lower detergent concentration than the first washing liquid, the washing liquid in the outer tub has a greater amount of water. From the first wash liquor through the second wash liquor to the fourth wash liquor, the concentration of the cleaning agent decreases continuously, so that the wetting of the outer and inner regions of the laundry is improved.

In another advantageous embodiment of the laundry treating appliance, the laundry treating appliance comprises a pressure sensor, wherein the pressure sensor is designed to be able to detect the pressure of the washing liquid in the outer tub, and the liquid generating unit is designed to be able to When corresponding to the predetermined first pressure, the washing liquid is added into the outer tub.

Thereby, the following technical advantage is achieved: the combination of the pressure sensor and the liquid generating unit enables automatic addition of washing liquid to the laundry according to the detected pressure. The pressure sensor may be located on the bottom of the tub and detect the pressure of the washing liquid in the tub. The pressure sensor detects the pressure exerted on the bottom of the tub by the column of washing liquid in the tub. Thus, the detected pressure is directly related to the filling state of the washing liquid in the tub. When the detected pressure corresponds to a predetermined first pressure, the washing liquid is supplied into the tub through the liquid generating device. Thereby, the addition of washing liquid can be automatically adjusted according to the detected pressure. Thereby it is ensured that the amount of washing liquid present in the tub is such that the outer and inner areas of the laundry can be effectively moistened.

In another advantageous embodiment of the laundry treatment appliance, the liquid generating device is designed to add the second washing liquid to the in the outer barrel.

Thus, the following technical advantage is achieved: when the pressure of the washing liquid in the outer tub corresponds to the predetermined second pressure and a predetermined time interval has elapsed, the washing liquid is automatically added into the outer tub by the liquid generating device. A specific start time is defined when the pressure sensor detects the second pressure of the washing liquid. During a predetermined time interval after the start time, the first washing liquid in the tub can sufficiently wet the laundry. Thereby, it is ensured that the outer and inner areas of the garment are sufficiently moistened.

In another advantageous embodiment of the laundry treatment appliance, the liquid generating device is designed to add a fourth washing liquid to the outer tub after a predetermined third pressure has been detected in the outer tub and after a predetermined time interval has elapsed .

Thereby, the following technical advantage is achieved: when the pressure of the washing liquid reaches the predetermined third pressure, and then a predetermined time interval elapses, the washing liquid is automatically added into the outer tub by the liquid generating device. The predetermined time interval after the pressure detection enables the laundry in the laundry treating appliance to be sufficiently wetted by the washing liquid in the tub. Furthermore, the predetermined time interval ensures that the temperature of the washing liquid has been raised sufficiently by the heat generating means.

In a further advantageous embodiment of the laundry treatment appliance, the liquid generating device is designed to add a third washing liquid to the outer tub after a predetermined time interval has elapsed after reaching the first temperature of the washing liquid in the outer tub.

Thus, the following technical advantage is achieved: when the washing liquid reaches the first temperature in the first time period and a predetermined time interval has elapsed after the temperature detection, the washing liquid can be automatically added to the outer tub by the liquid generating device middle. The first temperature of the wash liquid during the first time period is higher than the second temperature of the wash liquid during the second time period.

Thus, by detecting the first temperature, the time for transitioning from the first time period to the second time period can be defined. For example, this may be when the first temperature has reached a certain maximum temperature. By following a predetermined time interval, a sufficient time span is provided during which it can be ensured that the clothes are sufficiently wetted by the washing liquid in the outer tub, or during which the heating device is sufficiently wetted. Increase the temperature of the wash solution. Alternatively, the transition between the first time period and the second time period can also be realized by the third washing liquid, after detecting a predetermined pressure of the washing liquid and after a predetermined time interval has elapsed after the pressure detection time, The third washing liquid is automatically added into the outer tub through the liquid generating device.

In a further advantageous embodiment of the laundry treatment appliance, the laundry treatment appliance comprises a washing drum which is rotatably mounted in the tub, wherein the washing drum is designed to be able to rotate at a rotation frequency which is less than a maximum rotation frequency during a first period of time, in particular Rotate at a rotational frequency of less than 100 revolutions per minute.

Thereby, the technical advantage is achieved that the washing liquid added during the first time period is also able to wet the inner area of the laundry due to the reduced rotational frequency of the washing drum. In the case of a high rotational frequency of the washing drum, the washing liquid is conveyed into the outer area of the washing drum due to centrifugal force, and thus cannot adequately wet the inner area of the laundry. This effect is prevented by reducing the rotational frequency. By reducing the rotational frequency of the washing drum, washing liquid can also penetrate into the inner area of the laundry via the outer area of the laundry in the washing drum. Thus, effective cleaning of laundry is achieved.

According to a second aspect of the present invention, the object is achieved by a method for the treatment of laundry in a laundry treatment appliance comprising a heat generating device for generating heat, and a heating device for generating washing liquid A liquid generating device and an outer tub for receiving washing liquid, wherein the method includes: generating a first washing liquid by the liquid generating device in a first section of a first time period, and the first washing liquid has a first concentration of cleaning agent; in the second section of the first time period, a second washing liquid is generated by the liquid generating device, the second washing liquid has a second concentration of the cleaning agent, wherein the first concentration is higher than the first Two concentrations, and the washing liquid produced in the first time period is heated to the first temperature; in the first section of the second time period, the third washing liquid is produced by the liquid generating device, and the third washing liquid has a third concentration of cleaning agent, the third concentration is lower than the second concentration, the washing solution generated in the second time period is heated to the second temperature, and the first temperature is higher than the second temperature.

As a result, the following technical advantage is achieved: During the first time period of the washing process, compared with the second time period of the washing process, the higher temperature of the washing liquid and the higher detergent concentration of the washing liquid ensure that The outer and inner areas of the laundry to be treated are completely wetted with the washing liquid. In a laundry treating appliance full of laundry, it is ensured that the washing liquid not only wets the outer area of the laundry, but also penetrates the inner area of the laundry. As a result, all areas of the laundry are completely moistened and thoroughly cleaned.

In a further advantageous embodiment of the method, the method comprises generating, in a third section of the first time period, a fourth washing liquid having a fourth concentration of cleaning agent, wherein the first The fourth concentration is lower than the second concentration.

Thereby, the technical advantage is achieved that an additional third section is introduced in the first time period of the washing process, during which an additional amount of washing liquid is supplied to the laundry. During a third segment of the first time period, a further fourth wash liquid is generated, an additional amount of wash liquid is supplied to the laundry in the laundry treating appliance. By adding this additional amount of wash liquor, all areas of the laundry in the laundry treatment appliance are wetted in an efficient manner.

Further exemplary embodiments of the invention are shown in the drawings and described in more detail below.

Description of drawings

In the attached picture:

Figure 1 shows a schematic diagram of a laundry treatment appliance;

FIG. 2 shows the sequence of a method for laundry treatment in a laundry treatment appliance; and

Figure 3 shows a flow diagram of an exemplary washing method.

detailed description

FIG. 1 shows a schematic diagram of a washing machine constituting a general laundry treating appliance 100 . The laundry treatment appliance 100 includes a heat generating device 101 that generates heat. The generated heat is released to the washing liquid generated by the liquid generating device 103 . The resulting washing liquid is received in the outer tub 105 . A certain amount of laundry may be introduced into the washing drum 107 at least partially included in the tub 105 .

In different sections of the first and second time periods of the washing process, the liquid generating device 103 is designed to be able to generate different washing liquids that can be received in the outer tub 105 . In the first section of the first time period, the liquid generating device 103 generates a first washing liquid having a first concentration of the cleaning agent higher than that of the second cleaning agent after the first section of the first time period. A second concentration of detergent for the second wash liquor produced in the section. In the first section of the second time period of the washing process, a third washing liquid is generated by the liquid generating device 103, the third washing liquid has a third concentration of cleaning agent, wherein the third concentration is lower than the second concentration .

During the washing process, the heat generating device 101 generates heat which can be released to the washing liquid in order thereby to change the temperature of the washing liquid. The wash liquid generated during the first time period has a first temperature that is higher than the second temperature of the wash liquid generated during the second time period.

Thus, in the first time period of the washing process, the washing liquid having a higher detergent concentration and a higher temperature is generated by the liquid generating device 103 and the heating device 101 than the washing liquid generated in the second time period. . Therefore, by means of the laundry treating appliance 100, the laundry in the washing drum can be completely wetted during the washing process, which in turn ensures more efficient laundry treatment.

FIG. 2 shows the sequence of a method 200 for laundry treatment in the laundry treatment appliance described with reference to FIG. 1 . The method includes generating 201 a first wash liquor having a first concentration of cleaning agent during a first segment of a first time period. The method includes generating 203 a second wash liquor having a second concentration of cleaning agent during a second segment of the first time period. The method optionally further includes generating 205 a fourth wash solution having a fourth concentration of cleaning agent during the third segment of the first time period. The method includes generating 207 a third wash solution having a third concentration of cleaning agent during the first segment of the second time period.

After generation 201, a first concentration of detergent of the first wash liquor is higher than a second concentration of detergent of the second wash liquor. The resulting fourth wash liquid has a fourth concentration of detergent lower than the second concentration of cleanser of the second wash liquid. Generating 205 a fourth wash solution is an optional method step and not necessarily part of method 200 . The third concentration of detergent is also lower than the second concentration of detergent of the second wash liquor, and may also be lower than the fourth concentration of detergent. Thus, in the method 200, the first, second, fourth and third wash liquors are produced in four successive steps, wherein the concentration of cleaning agent decreases from the first wash liquor to the third wash liquor.

The washing liquid generated in the first time period is heated to a first temperature by the heating device 101 . The washing liquid generated in the second time period is heated to the second temperature by the heating device 101 . The first temperature is higher than the second temperature. Effective wetting of the laundry is ensured by the higher temperature and higher concentration of detergent in the wash liquor added during the first time period compared to the wash liquor added during the second time period.

The method steps described in FIG. 2 are based on the laundry treatment appliance shown in FIG. 1 .

FIG. 3 shows a flow chart of a method for treating laundry in the laundry treating appliance 100 shown in FIG. 1 . The figure shows a graphical representation of temperature 301 , pressure 303 and supply 305 of washing liquid over time 307 . During the washing method, washing liquid is generated by the liquid generating device 103 and added to the outer tub 105 . The laundry to be treated is located in the washing drum 107 and is wetted by the washing liquid located in the tub 105 . The washing method includes a first time period 309 and a second time period 311 . The first time period 309 is divided into a first segment 313 , a second segment 315 and a third segment 317 . The second time period 311 includes the first segment 319 .

During a first section 313 of the first time period 309 , an amount 321 of a first washing liquid generated by the liquid generating device 103 is added to the outer tub 105 . After the first washing liquid 321 is added, the washing liquid in the outer tub 105 has a specific volume and a first pressure 323 . The laundry in the washing drum 107 receives a part of the washing liquid in the tub 105 . Therefore, the volume of the laundry in the tub 105 decreases, and thus, the pressure of the washing liquid detected by the pressure sensor decreases to the second pressure 325 . After second pressure 325 is reached, first time interval 327 must elapse before second segment 315 of first time period 309 begins.

During a second section 315 of the first time period 309 , an amount 329 of second washing liquid generated by the liquid generating device 103 is added to the outer tub 105 . Therefore, the pressure in the washing liquid located in the outer tub 105 is increased. As the washing liquid is absorbed by the laundry, the pressure of the washing liquid decreases and reaches the third pressure 331 . After reaching the third pressure 331 , a second time interval 333 must elapse before the start of the third segment 317 of the first time period 309 , a quantity 335 of fourth washing liquid is generated by the liquid generating means and added to the outer tub 105 .

During the second section 315 and the third section 317 of the first time period 309, the washing liquid is continuously heated by the heating device 101 until the washing liquid reaches a first temperature 337, which corresponds to the washing liquid at The maximum temperature during the first time period 309 . After the first temperature 337 has been reached, a third time interval 339 must elapse before the second time period 311 of the method begins. During the first section 319 of the second time period 311 , an amount 341 of a third washing liquid is generated by means of the liquid generating device 103 and added to the outer tub 105 .

During the second time period 311, the heating device 101 is switched off, so that the temperature of the washing liquid is continuously reduced during the further washing process. During the second time period 311 the laundry is washed with the wash liquor until the wash liquor reaches a final concentration 343 after the main wash cycle. The duration of the second time period 311 includes a time period 345 of a maximum of 40% of the total duration of the entire washing process. By means of a washing cycle corresponding to the method described, a maximum moistening of the outer and inner regions of the laundry located in the washing drum 107 can be achieved.

In a conventional washing process in a laundry treating appliance 100, the washing and cleaning action of the clothes is related to three important variables: the volume V of washing liquid supplied to the clothes, the concentration y of the cleaning agent in the washing liquid, and the temperature T of the washing liquid. .

The laundry treating appliance 100 shown in FIG. 1 , which is filled with laundry, is described according to one embodiment. The liquid generating device 103 of the laundry treating appliance 100 generates washing liquid supplied to the laundry. During the main washing phase, the laundry is treated with the supplied washing liquid. The quantity M _mw of washing liquid supplied during the main wash phase is chosen such that cleaning of the laundry is ensured during the main wash phase in a very efficient manner. During the main washing phase, washing liquid is typically supplied in a defined time interval 345 starting at the beginning of the entire washing program and ending when 40% of the total duration of the entire washing process has elapsed.

Furthermore, the quantity M _mw of washing liquid supplied during the main washing phase includes the quantity M _d of cleaning agent. The amount M _d of detergent can be predetermined according to a particular washing program. The amount _Md of detergent may alternatively have been determined by a previous wash cycle carried out with a certain amount of detergent and a certain amount of laundry. The final concentration y _mw of detergent after the main wash phase 343 is calculated according to the following formula.

y _mw =M _d /M _mw

The main wash phase consists of a first time period 309 and a second time period 311 .

The first period of time 309 includes a soaking phase during which the laundry located in the laundry treating appliance 100 is saturated with washing liquid. In this case, the washing liquid wets the fibers of the laundry and penetrates into the inner area of the laundry in the laundry treating appliance 100 . During the soaking phase, the wetting of the inner area of the laundry is achieved by the high concentration y of the detergent in the wash liquor and the high temperature T of the wash liquor.

The second time period 311 includes an over-soaking phase after the soaking phase, during which the laundry located in the laundry treating appliance 100 is over-saturated with washing liquid. In order to achieve complete wetting of the inner area of the laundry during the oversoaking phase, a large volume V of wash liquor is supplied to the laundry.

During the first time period 309 including the soaking phase, the washing liquid supplied to the laundry may be heated by the heating device 101 .

The amount M _satu of washing liquid supplied during the first time period 309 is calculated according to the following formula.

M _satu ＝M _load ×a+M _deadvolume +M _safelevel

The laundry amount M _load located in the laundry treating appliance 100 corresponds to the total weight of the laundry. The coefficient a is a predetermined value according to a specific type of laundry or a specific washing program. When the washing program is used for laundry made of cotton, the value of the factor a can be, for example, 1.7. The amount M _deadvolume of washing liquid corresponds to the amount of washing liquid required to fill the dead volume of the outer tub 105 . The quantity M _safelevel corresponds to the quantity of washing liquid required to fill the additional volume of the tub 105 . The additionally supplied amounts of washing liquid M _deadvolume and M _safelevel ensure that there is a sufficient minimum amount of washing liquid in the outer tub 105 to adequately wet the laundry located in the washing drum 107 during the washing process.

During a second time period 311 comprising an oversoak phase and following the first time period 309, a quantity M _os 341 of wash liquid is supplied. During the second time period 311 , the addition of the amount M _os 341 of the washing liquid takes place after the washing liquid is heated by the heat generating means in the outer tub 105 . The amount M _os of washing liquid supplied during the second time period may include the amount of washing liquid supplied during the time interval 345 starting from the beginning of the entire washing program and ending after the total washing process Ends at 40% of duration. For example, if the total duration of the washing process requires 5 hours, then the second time period ends after 2 hours at the latest.

The sum of the amount of washing liquid M _satu supplied during the first time period 309 and the amount of washing liquid M _os 341 supplied during the second time period 311 is equal to the total amount of the amount of washing liquid M _mw supplied during the main washing phase.

During a first section 313 of the first time period 309, a first amount M _{satu_1} 321 of washing liquid is generated at a first concentration _y1 , _which is added to the laundry treatment appliance 100. In the outer barrel 105. The concentration y of the _first washing liquid is calculated according to the following formula:

y ₁ =M _d /M _{satu_1}

M _{satu — 1} corresponds to the quantity 321 of the supplied first washing liquid, which may include, for example, 8 kg of water, taking into account the dead volume of the outer tub 105 . M _d corresponds to the amount of detergent in the supplied first washing liquid amount 321 .

After supplying the first washing liquid 321 , the washing liquid at the concentration y ₁ and the first pressure P ₁ 323 is located in the outer tub 105 . After the laundry has absorbed a portion of the washing liquid, the pressure of the washing liquid drops and reaches a second pressure P ₂ 325 . Then, the heating device 101 is turned on, thereby heating the first washing liquid in the amount 321 in the outer tub 105 . The provided detergent concentration in the wash liquor and the provided heat allow the laundry in the wash drum 107 of the laundry treating appliance 100 to be effectively wetted.

When the pressure of the first washing liquid 313 in the outer tub 105 corresponds to the predetermined second pressure P ₂ 325 and after the predetermined second pressure P ₂ 325 has been detected, the predetermined first time interval t ₂ 327 elapses , the second segment 315 of the first time segment 309 begins. By delaying the addition of additional wash liquid, it is ensured that the quantity 321 of the first wash liquid in the outer tub 105 sufficiently wets the laundry. During a second segment 315 of the first time period 309, an amount of a second wash liquid 329 is generated having a _second concentration y2 of cleaning agent in the second wash liquid, the first Second washing liquid is added to the outer tub 105 of the laundry treating appliance 100 . The second concentration y of the _second washing liquid is calculated according to the following formula:

y ₂ =M _d /M _{satu_2}

M _{satu_2} corresponds to the quantity 329 of the second washing liquid supplied. M _d corresponds to the amount of detergent in the amount 329 of second washing liquid supplied. The _second concentration y2 of the detergent in the supplied second washing liquid 329 is lower than the concentration of the detergent in the supplied first washing liquid. The second concentration y2 of the detergent in the supplied _second washing liquid may be 50% to 99% of the first concentration of the detergent in the first washing liquid.

The third segment 317 of the first time period 309 is an optional segment and is not necessarily an integral part of the method. When the pressure of the washing liquid in the tub 105 corresponds to the predetermined third pressure P ₃ 331, and after the predetermined third pressure P ₃ 331 is detected, when the predetermined second time interval t ₃ 333 has elapsed, the first wash cycle starts. A third segment 317 of a time segment 309 .

By delaying the addition of additional washing liquid, it is ensured that the washing liquid in the outer tub 105 can fully wet the clothes. Then, by means of the liquid generating device 103, a certain amount of fourth washing liquid 335 is generated, said fourth washing liquid has a _fourth concentration y4 of cleaning agent in the washing liquid, said fourth washing liquid is added to the laundry treatment appliance 100 In the outer bucket 105 of. The fourth concentration y of the _fourth washing solution is calculated according to the following formula:

y ₄ =M _d /M _{satu_4}

M _{satu_4} corresponds to the quantity 335 of the fourth washing liquid supplied. M _d corresponds to the amount of detergent in the fourth wash liquid amount 335 . The _fourth concentration y4 of the detergent in the fourth washing liquid is lower than the concentration of the detergent in the first washing liquid supplied in the preceding section. The fourth concentration y4 of the detergent in the supplied _fourth washing liquid may be 50% to 99% of the first concentration of the detergent in the first washing liquid.

If the fourth washing liquid is added, the second concentration y2 of the supplied _second washing liquid may be 60% to 99% of the first concentration of detergent in the first washing liquid supplied in the previous section.

The first time corresponding to the soaking phase is terminated when a predetermined time for generating heat by the heating means has elapsed, or when the washing liquid has reached a first temperature 337 corresponding to the maximum temperature of the washing liquid during the washing process by means of the heating means Paragraph 309. After reaching the maximum temperature, it is necessary to wait until a predetermined third time interval t _os 339 has elapsed.

Alternatively, the first period of time 309 can also be terminated when the pressure of the washing liquid corresponds to a predetermined pressure _Pos and a predetermined time interval has elapsed after reaching said predetermined pressure.

During the first section 313, the second section 315, and the third section 317 of the first time period 309, the washing drum does not rotate or rotates in one direction at a rotation frequency of less than 100 revolutions per minute, thereby ensuring the laundry Wet well.

During the first time period 309 of the washing process a high temperature of the washing liquid and a high concentration of cleaning agent in the washing liquid are ensured compared to the washing liquid used in the second time period 311 . This enables the outer and inner areas of the laundry in the washing drum 107 of the laundry treating appliance 100 to be completely wetted.

The second period of time 311 of the washing process, which corresponds to the oversoaking phase, is carried out after the heating phase of the washing liquid by the heat generating device 101 has terminated and consists of treating the laundry in the washing drum 107 of the laundry treatment appliance 100 with a volume of washing liquid , the volume of washing liquid has a low concentration of detergent compared to the concentration of detergent in the washing liquid in the first time period 309 .

After reaching the maximum temperature 337 or after reaching a predetermined fourth pressure P _os of the washing liquid in the tub 105 and a predetermined time interval t _os 339 has elapsed, the second time period 311 of the washing process may start.

By delaying the addition of additional washing liquid, it is ensured that the washing liquid in the outer tub 105 can fully wet the clothes. During the first section 319 of the second time period 311, a third washing liquid 341 is generated by the liquid generating device 103, the third washing liquid 341 has a cleaning agent of a third concentration y _os , the third washing liquid is Add to the outer tub 105 of the laundry treatment appliance 100. The third concentration y _os of the third washing liquid is calculated according to the following formula:

y _os =M _d /M _os

M _os corresponds to the amount of the supplied third washing liquid 341 . M _d corresponds to the amount of detergent in the supplied third washing liquid. The third concentration y _os of the supplied third washing liquid is lower than the concentration of the cleaning agent in the first, second and fourth washing liquids. Complete wetting of the outer and inner regions of all the laundry in the washing drum 107 is achieved by the lower concentration of detergent in the fourth wash liquor and the residual residual heat of the wash liquor.

The quantity M _os 341 of washing liquid supplied during the second time period may comprise the quantity of washing liquid supplied during the time interval 345 starting from the beginning of the entire washing program and after the total duration of the entire washing process Ends at 40% of the time. Thus, all laundry is completely wetted.

During the second time period 311, there is no limit to the rotation frequency of the washing drum in the washing machine.

All the features described and shown in connection with the various embodiments of the invention can be provided in different combinations under the subject matter according to the invention in order to simultaneously achieve their advantageous effects.

The scope of protection of the present invention is indicated by the claims and is not limited by the features described in the description or shown in the drawings.

List of reference signs

100 clothes disposal equipment

101 heating device

103 liquid generating device

105 outer barrel

107 washing drum

200 methods

201 Method step: generating a first washing solution in a first segment of a first time period

203 Method step: generating a second washing solution in a second segment of the first time period

205 Method step: generating a fourth washing solution in a third segment of the first time segment

207 Method step: generating a third washing solution in the first section of the second time period

300 methods

301 Temperature curve of washing liquid

303 pressure curve of washing liquid

305 Amount of washing liquid supplied

307 time curve

309 first time period

311 second time period

313 First segment of first time segment

315 Second segment of first time segment

317 The third segment of the first time segment

319 First segment of second time segment

321 The amount of the first washing liquid

323 First Pressure

325 second pressure

327 first time interval

329 Amount of second washing solution

331 Third Pressure

333 Second time interval

335 The amount of the fourth washing liquid

337 First temperature

339 Third time interval

341 Amount of third washing solution

343 Amount of wash liquor after main wash cycle

345 40% time segment of the entire wash cycle

Claims (15)

1. A laundry treatment appliance (100) for laundry treatment, comprising a heating device (101) for generating heat, a liquid generating device (103) for generating washing liquid and a device for receiving washing liquid The outer tub (105), characterized in that the liquid generating device (103) is designed to A first wash solution (321) having a first concentration of cleaning agent can be produced in a first segment (313) of a first time period (309), A second wash solution (329) can be produced in a second segment (315) of the first time period (309), the second wash solution (329) having a second concentration of cleaning agent, wherein the first concentration is high At the second concentration, A third wash solution (341) can be produced in the first section (319) of the second time period (311), the third wash solution (341) having a third concentration of cleaning agent, wherein the third concentration is low at the second concentration, and The heating device (101) is designed to be able to form a first temperature (337) of the washing liquid during the first time period (309), and form a second temperature of the washing liquid during the second time period (311), wherein the first The temperature (337) is higher than the second temperature. 2. The laundry treatment appliance (100) according to claim 1, characterized in that, the liquid generating device (103) is designed to be able to produce the fourth wash in the third segment (317) of the first time segment (309) liquid (335), the fourth washing liquid (335) has a fourth concentration of cleaning agent, wherein the fourth concentration is lower than the second concentration. 3. The laundry treatment appliance (100) according to claim 1 or 2, characterized in that the liquid generating device (103) is designed to change the outer tub by supplying a certain amount of washing liquid into the outer tub (105). The concentration of detergent in the wash liquor in (105). 4. The laundry treatment appliance (100) according to any one of the preceding claims, characterized in that the laundry treatment appliance (100) comprises a washing drum (107) located in the outer tub (105), wherein the liquid generating device (103) designed to be able to transfer a certain amount of laundry to the washing drum (107) of the laundry treatment appliance (100) based on the amount of laundry or the type of laundry in the laundry tub (107) of the laundry treatment appliance (100). The liquid is supplied into the outer barrel (105). 5. The laundry treatment appliance (100) according to any one of the preceding claims, wherein the liquid generating device (103) is designed to be able to supply the minimum volume of washing liquid into the outer tub (105), Wherein, the minimum volume is greater than the dead volume of the outer barrel (105). 6. The laundry treatment appliance (100) according to claim 5, characterized in that, the minimum volume of the amount of washing liquid supplied to the outer tub (105) is greater than the dead volume of the outer tub (105) and the outer tub The sum of the additional volumes of (105). 7. The laundry treating appliance (100) according to any one of the preceding claims, wherein the second concentration of the cleaning agent in the second washing liquid (329) is the cleaning agent in the first washing liquid (321). 50% to 99% of the first concentration of the agent. 8. The laundry treatment appliance (100) according to any one of claims 2-7, wherein the fourth concentration of the cleaning agent in the fourth washing liquid (335) is lower than that of the first washing liquid (321). ), wherein the fourth concentration is especially 50% to 99% of the first concentration. 9. The laundry treating appliance (100) according to any one of the preceding claims, characterized in that the laundry treating appliance (100) comprises a pressure sensor, Wherein, the pressure sensor is designed to be able to detect the pressure of the washing liquid in the outer tub (105), Wherein, the liquid generating device (103) is designed to add washing liquid into the outer tub (105) when the detected pressure corresponds to a predetermined first pressure. 10. The laundry treatment appliance (100) according to claim 9, characterized in that, the liquid generating device (103) is designed to be able to detect the predetermined first cleaning liquid (321) in the outer tub (105) After the second pressure (325) and after a predetermined time interval (327), a second washing liquid (329) is added to the outer tub (105). 11. The laundry treatment appliance (100) as claimed in claim 9 or 10, characterized in that the liquid generating device (103) is designed to detect a predetermined third pressure ( After 331) and after a predetermined time interval (333), the fourth washing solution (335) is added to the outer tub (105). 12. The laundry treatment appliance (100) according to any one of the preceding claims, characterized in that the liquid generating device (103) is designed to detect the first temperature of the washing liquid in the outer tub (105) ( 337) and after a predetermined time interval (339), the third washing liquid is added to the outer tub (105). 13. The laundry treatment appliance (100) according to any one of the preceding claims, characterized in that the laundry treatment appliance (100) comprises a washing drum (107) rotatably mounted in the outer tub (105), wherein, The washing drum (107) is designed to be able to rotate during the first time period (309) at a rotational frequency less than the maximum rotational frequency, in particular less than 100 revolutions per minute. 14. A method (200) for treating laundry in a laundry treating appliance (100), the laundry treating appliance (100) comprising a heating device (101) for generating heat, and further comprising a heating device (101) for generating washing liquid A liquid generating device (103) and an outer tub (105) for receiving washing liquid, characterized in that the method (200) includes: In a first segment (313) of the first time period (309), a first wash liquid (321) is generated (201) by the liquid generating device (103), the first wash liquid (321) having a first concentration of cleaning agent , During a second segment (315) of the first time period (309), a second wash liquid (329) is generated (203) by the liquid generating device (103), the second wash liquid having a second concentration of cleaning agent , wherein the first concentration is higher than the second concentration, the second washing solution produced in the first time period is heated to a first temperature (337), In the first segment (319) of the second time period (311), a third wash liquid (341) is generated (207) by the liquid generating device (103), the third wash liquid (341) having a third concentration of cleaning agent , wherein the third concentration is lower than the second concentration, the wash solution produced during the second time period is heated to a second temperature, and Wherein, the first temperature (337) is higher than the second temperature. 15. The method according to claim 14, characterized in that the method comprises generating (205) a fourth washing liquid (335) in a third section (317) of the first time period (309), said The fourth washing solution (335) has a fourth concentration of cleaning agent, wherein the fourth concentration is lower than the second concentration.