EP3186429A1

EP3186429A1 - Laundry-treatment appliance having a feeding device

Info

Publication number: EP3186429A1
Application number: EP15750769.0A
Authority: EP
Inventors: Jörg SKRIPPEK; Rainer Jurmann; Dirk MISCHKE; Torsten Böttger; Raymond Römer
Original assignee: BSH Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 2014-08-28
Filing date: 2015-08-19
Publication date: 2017-07-05
Anticipated expiration: 2035-08-19
Also published as: DE102014217121A1; CN106605018A; CN106605018B; WO2016030235A1; RU2668836C1; EP3186429B1

Abstract

The present invention relates to a laundry-treatment appliance (100) for treating laundry (123), wherein the laundry-treatment appliance (100) comprises a tub (103) for accommodating washing detergent (121), a rotatably mounted washing drum (105) for accommodating laundry (123), a drive (107) for driving the washing drum (105), a detergent-solution pump (109) for pumping washing detergent (121) out of the tub (103), a feeding device (111) for feeding washing detergent (121) from the tub (103) into the washing drum (105), and a heat-generating device (113) for heating washing detergent (121) channelled through the feeding device (111). The detergent-solution pump (109) is designed so that, during a first period of time, a first quantity of washing detergent (121) can be pumped out of the tub (103). The drive (107) is designed so that, during a second period of time, which follows the first period of time, the washing drum (105) can be driven at a spinning frequency in order for a second quantity of washing detergent (121) to be spun off from the laundry (123) in the washing drum (105) and fed to the tub (103). The feeding device (111) is designed so that, during a third period of time, which follows the second period of time, the second quantity of washing detergent (121) can be fed from the tub (103) to the interior of the washing drum (105) in order to wet the laundry (123) in washing drum (105). The heat-generating device (113) is designed so that, during the third period of time, the second quantity of washing detergent (121) channelled through the feeding device (111) can be heated to a predetermined temperature, wherein the heat-generating device (113) is integrated in the feeding device (111). The drive (107) is designed so that, during the third period of time, the washing drum (105) can be driven at a rotational frequency in order for the second quantity of washing detergent (121) to be distributed in the laundry (123) located in the washing drum (105).

Description

Laundry care device with a feeder

The present invention relates to a laundry care device having a feeding device for feeding washing liquor from the tub into the washing drum. A laundry care process in a laundry care appliance, such as e.g. A washing machine normally comprises a washing phase and a spinning phase with several centrifuging operations following the washing phase. During the washing phase, soiled laundry, which is located in the rotatably mounted washing drum, is mixed with washing liquor in order to clean the laundry. During a spin operation of the spin phase, the wash drum is rotated at a high spin frequency. Characterized washing liquor from the laundry in the washing drum is pressed due to the centrifugal force through drainage holes in the washing drum in a space between the washing drum and tub. The liberated so washing liquor can be absorbed in the tub of the washing machine.

The spin phase may include several spin events that are performed to remove the largest possible amount of wash liquor from the wash. As a result, a drying of the laundry in the washing drum of the laundry care device is achieved and it is prevented that the laundry must be taken to dripping wet after completion of the washing process. Therefore, it is advantageous if the residual moisture still present in the laundry after the spin phase is as low as possible. This is accomplished by spinning the laundry in the washing drum in a final spin cycle with a high spin frequency to remove a large amount of wash liquor from the laundry. However, in conventional centrifuging processes, a relatively high residual moisture content remains in the laundry even after the final spinning process of the spinning phase. In addition, relatively large amounts of water and energy are consumed in conventional centrifuging. It is the object underlying the invention to provide a laundry care device in which the cleaned laundry has a low residual moisture after the spin phase. This object is achieved by articles having the features according to the independent claim. Advantageous embodiments of the invention are the subject of the figures, the description and the dependent claims. According to one aspect of the invention, the object is achieved by a laundry care device for maintaining laundry, wherein the laundry care device comprises a suds container for holding washing liquor, a rotatably mounted washing drum for receiving laundry, a drive for driving the washing drum, a suds pump for pumping off suds the suds container, a supply device for feeding suds from the suds container into the squeeze drum, and a heat generator for heating suds passed through the sorter, the sump pump being configured to pump a first amount of suds out of the sump in a first time period; wherein the drive is adapted to drive the washing drum at a spin frequency in a second period subsequent to the first time period to free spin a second amount of wash liquor from the laundry in the washing tub and to add it to the tub lead, wherein the feeding device is adapted to supply the second amount of wash liquor from the tub to the interior of the washing drum in a third period subsequent to the second period to wet the laundry in the washing drum, wherein the heat generating means is formed in the third Period to heat the second amount of wash liquor fed by the feeder to a predetermined temperature, wherein the heat generating means is integrated into the feeder and wherein the drive is adapted to drive the wash drum at a rotational frequency in the third period to the second amount of wash liquor distribute the laundry in the washing drum.

Thereby, the technical advantage is achieved that an effective heat transfer from the wash liquor to the laundry is achieved by the supply of heated wash liquor to the laundry in the washing drum by the feeder. As a result, an effective reduction of the residual moisture content of laundry after completion of the spin phase is achieved and the water and energy consumption during the spin phase can be reduced. During the feeding of wash liquor in the Washing drum in the third period, the washing drum is rotated at a low rotational frequency. As a result, the laundry is subjected to less mechanical stress than is the case with a conventional spinning process with a high spin frequency. In addition, the heating of the wash liquor by the heat generating device effectively kills germs in the wash liquor, thereby reducing the health burden on the wearer of the wash.

In a first period, the drain pump pumps the first amount of wash liquor from the tub to remove after the washing phase remaining in the tub washing solution from the laundry care device. This ensures that only the second amount of wash liquor, which is bonded to the laundry in the washing drum, the washing drum is supplied in a subsequent step. In a second period subsequent to the first period, the drive drives the washing drum to spin the second quantity of wash liquor bound to the laundry, which is received in the tub. During the subsequent third period, the second amount of wash liquor is supplied from the tub to the interior of the wash tub by the feeder to sufficiently wet the laundry in the wash tub. During the supply of wash liquor to the interior of the wash basket, the wash liquor in the feeder is heated by the heat generator to a predetermined temperature to ensure that heated wash liquor is supplied to the wash tub. The heat generating means is integrated with the feeder, and may comprise, for example, a heating element mounted outside a feeder line of the feeder. By integrating the heat generating device in the feeder can be ensured that the wash liquor is heated to the predetermined temperature immediately before feeding into the washing drum. When the heated wash liquor is fed to the wash tub, the laundry in the wash tub heats up. During the supply of the heated second quantity of washing liquor, the drive drives the washing drum at a rotational frequency in order to distribute the washing liquor in the laundry located in the washing drum. The heating of the laundry leads to a reduced water retention capacity of the laundry. Particularly advantageous is a heating of the laundry to the predetermined temperature between 40 ° C and 95 ° C prove, the exact selection of the predetermined temperature of the amount of laundry or the type of laundry in the washing drum depends. As a result, an effective transfer of heat from the wash liquor is achieved on the laundry in the washing drum and after completion of the spin phase laundry can be removed from the washing drum, which has a low residual moisture.

In an advantageous embodiment of the laundry care device, the rotational frequency is lower than the spin frequency.

Thereby, the technical advantage is achieved that an effective transfer of heat from the wash to the laundry is achieved by the low rotational frequency of the washing drum during the supply of heated wash liquor to the laundry located in the washing drum. As a result, the residual moisture of the laundry is reduced after the spin phase.

During the spin phase, the laundry in the washing drum is spun at a high spin frequency to spin off a large amount of wash liquor from the laundry within a short time, which is taken up in the tub. Due to the lower rotational frequency of the washing drum during the supply of washing liquor compared to the centrifugal frequency, it is prevented that the supplied washing liquor is immediately thrown free. Rather, it is achieved by the low rotational frequency of the washing drum that the supplied warm wash liquor can be effectively distributed in the washing drum and thus can wet all areas of the laundry. This results in an effective transfer of heat from the heated wash to the laundry.

An advantageous rotational frequency is in a range between 2 revolutions per minute and 100 revolutions per minute, preferably in a range between 5 revolutions per minute and 50 revolutions per minute. By supplying washing liquor during the rotation of the washing drum with a low rotational frequency is an effective heat transfer from the wash to the Laundry ensured during the spin phase. This leaves after completion of the spin phase only a small residual moisture in the laundry.

In a further advantageous embodiment of the laundry care appliance, the supply device comprises a supply line and a nozzle, wherein the drain pump is designed to supply the second quantity of wash liquor from the tub through the supply line to the nozzle, and wherein the nozzle is arranged in the wash drum.

Thereby, the technical advantage is achieved that an advantageous distribution of heated wash liquor in the laundry in the washing drum is achieved by the arrangement of the nozzle in the washing drum and the supply of wash liquor through the supply line into the washing drum. The nozzle comprises a Waschlaugenauslassöffnung which is directed to an inner drum wall of the washing drum, whereby the laundry can be sprayed specifically in the washing drum. The nozzle can be located in the cuff of the washing machine. The Waschlaugenauslassöffnung the nozzle can be designed multi-channel or it can be used a flow-optimized nozzle. The wash liquor sprayed on the laundry can be accelerated on a laundry ring applied to the drum inner wall and driven through the laundry by the centrifugal forces acting on the water. In this case, there is an effective heat transfer from the wash to the laundry, whereby the retention force for the water in the laundry can be efficiently reduced. As a result, the residual moisture of the laundry can be effectively reduced after completion of the spin phase. In a further advantageous embodiment of the laundry care device, the drain pump is connected by a first portion of the supply line to a drain opening of the tub.

As a result, the technical advantage is achieved that the second amount of wash liquor can be effectively pumped out of the tub by the drain pump and fed directly through the feed line of the wash drum. The drain pump can be designed such that it can detect by means of a reduction in the delivery rate or by the pumping of an air-wash liquor mixture when the Amount of washing liquor in the tub is too low to be supplied to the washing drum can. In this case, the drain pump can stop the pumping of wash liquor from the tub. Thus, by the arrangement of the drain pump in the feeder, an effective pumping out of the wash liquor from the tub and a direct supply of the wash liquor into the washing drum allows. This achieves effective heat transfer from the warm wash to the laundry in the wash drum.

In a further advantageous embodiment of the laundry care device, the supply line comprises a three-way valve which is connected to the drain pump through a second portion of the feed line which is connected to the nozzle by a third portion of the feed line, wherein the laundry care device a waste water discharge for discharging wash liquor from the Laundry care device comprises, and wherein the three-way valve is configured to supply the second amount of wash liquor through the third portion of the feed line of the nozzle in a first valve setting, and to divert the second amount of wash liquor through the waste water discharge from the laundry care device in a second valve setting.

Thereby, the technical advantage is achieved that the supply of heated wash liquor can be terminated in the washing drum by the three-way valve when a sufficient amount of heat has been transferred from the wash to the laundry in the washing drum. If a sufficient amount of heat has been transferred, the valve setting of the three-way valve can be changed. The three-way valve is controlled to such that the pumped out of the tub washing liquor is no longer guided through the third section of the supply line into the washing drum, but is derived by the waste water discharge from the laundry care device.

The three-way valve can be controlled electrically, for example by a control device of the laundry care device. In the first valve setting, the drain pump pumps the second amount of wash liquor from the tub through the first, second and third sections of the supply line to the nozzle to deliver the wash liquor to the wash tub. In the second valve setting, the three-way valve directs the second quantity of wash liquor pumped out of the tub by the drain pump through the waste water drainage from the laundry care appliance. Thus is through the use of the three-way valve, an effective control of the heat transfer from the wash to the laundry in the washing drum possible to reduce the residual moisture of the laundry after completion of the spin phase sufficiently.

In a further advantageous embodiment of the laundry care device, the three-way valve between the second portion and the third portion of the supply line is integrated into the supply line.

Thereby, the technical advantage is achieved that the three-way valve can effectively control the supply of wash liquor from the tub by the supply line into the washing drum. The three-way valve is positioned at the interface between the second section of the supply line, the third section of the supply line and the waste water discharge. The three-way valve can effectively control, by the first and second valve settings, whether the pumped amount of wash liquor is to be supplied to the wash drum through the third portion of the feed line, or whether the wash liquor is to be drained through the sewage line from the laundry care appliance. Thus, the position of the three-way valve in the feeder ensures effective control of the amount of heat supplied from the wash liquor to the laundry in the wash tub. In a further advantageous embodiment of the laundry care device, the third section of the supply line comprises a riser, wherein the riser is arranged outside of the tub in the laundry care device.

Thereby, the technical advantage is achieved that is achieved by the use of the riser in the feed line, that it comes in a stop the pumping of wash liquor through the drain pump to an immediate stop the supply of wash into the washing drum. Washing liquor, which is in the riser after switching off the drain pump, does not flow further into the washing drum due to gravity. As a result, by stopping the drain pump almost simultaneously, a stop of the supply of wash liquor into the wash drum can be achieved. In addition, the arrangement of the riser outside of the tub allows that in the laundry care device sufficient space is available to other components, such as a heat generating device or a Temperature sensor to attach to the riser. Thus, the use of the riser in the feeder enables efficient delivery of heated wash liquor into the wash drum.

In a further advantageous embodiment of the laundry care appliance, the washing drum comprises a device for moving laundry in the washing drum or a device for moving wash liquor in the washing drum.

This achieves the technical advantage that effective wetting of the laundry located in the washing drum with the supplied washing liquor is achieved by the device for moving laundry in the washing drum or the device for moving wash liquor in the washing drum. During a rotation of the washing drum laundry remains stuck in the apparatus for moving laundry in the washing drum and thereby carried the washing drum in the direction of rotation of the washing drum. Also, wash liquor will be moved through the device for moving wash liquor in the direction of rotation of the wash drum. Thus, by the apparatus for moving wash liquor in the washing drum or the apparatus for moving wash liquor in the washing drum, an effective mixture of washing liquor and laundry in the washing drum can be ensured. This allows an effective heat transfer from the wash to the laundry take place and the residual moisture after the spin phase is reduced.

In a further advantageous embodiment of the laundry care appliance, the laundry care appliance comprises a temperature detection device for detecting a temperature of wash liquor in the feed device.

This achieves the technical advantage that a precise control of the temperature of the second quantity of wash liquor in the feed device is achieved by the combination of the temperature detection device and the heat generating device. This is possible in particular when the temperature detection device and the heat generation device are in contact and are controlled, for example, by a control device. The temperature detecting means may detect when the temperature of the washing liquor in the feeder reaches a predetermined temperature. Once the sensed temperature is equal to the predetermined temperature, the heat generator may terminate heating of wash liquor in the feeder. The advantageous control ensures that the temperature of the wash liquor which is supplied to the laundry in the washing drum corresponds to the predetermined temperature. By the advantageous adjustment of the temperature of the wash liquor in the feeder, an effective heat transfer from the wash liquor to the laundry in the wash drum is achieved. Thereby, a reduction of the residual moisture of the laundry in the washing drum can be achieved after the spin phase.

In a further advantageous embodiment of the laundry care appliance, the laundry care appliance comprises a fill level sensor and a wash liquor feed device, wherein the fill level sensor is designed to detect a fill level of wash liquor in the wash tub, and wherein the wash liquor feed device is designed to supply a quantity of wash liquor to the wash tub when the detected Level falls below a predetermined level threshold.

Thereby, the technical advantage is achieved that it is ensured that during the supply of wash liquor from the tub in the washing drum always a sufficient amount of wash liquor is present in the tub. This prevents dry running of the tub. This is advantageous in order to prevent air from being pumped into the washing drum by the feeding device or to avoid overheating of the heat generating device in the feeding device. The level sensor may issue an internal warning signal to the wash liquor supply to signal that the detected fill level of wash liquor in the tub falls below a predetermined level threshold. The wash liquor supply device can then add a quantity of wash liquor into the tub until the detected level of wash liquor in the tub reaches the predetermined level threshold. As a result, a trouble-free sequence of the supply of heated wash liquor is ensured in the washing drum by the feeder. In a further advantageous embodiment of the laundry care appliance, the laundry care appliance comprises a load detection device, wherein the load detection device is designed to detect the amount of laundry or type of laundry in the washing drum, and wherein the wash liquor supply device is designed, the amount of supplied wash liquor depending on the detected amount of laundry or type of laundry to determine.

Thereby, the technical advantage is achieved that the determination of the really required amount of wash liquor depending on the amount of laundry or laundry in the washing drum ensures that a sufficiently large amount of wash liquor can be supplied by the feeder of the laundry, to effectively transfer heat from the To ensure washing liquor on the laundry. Determination and delivery of the required amount of wash liquor by the wash liquor supply ensures that there is a sufficient amount of wash liquor in the tub prior to supplying wash liquor to the wash tub to ensure complete wetting of the wash in the wash tub. If too little amount of wash liquor is present in the tub that is insufficient to completely wet the wash, then an additional amount of wash liquor may be added to the tub through the wash liquor feeder. In a full-load laundry drum, a larger amount of wash liquor may need to be added to the wash basket to achieve sufficient heat transfer from the wash liquor to the laundry than is the case with a low-load laundry drum. In addition, the type of laundry also affects the required amount of wash liquor. For a type of laundry that can hold a large amount of fluid, such as towels, a large amount of wash liquor is needed to ensure adequate heat transfer from the wash liquor to the laundry in the wash tub. In a type of laundry that can hold a small amount of liquid, such as polyester fibers, a small amount of wash liquor is needed. By the precise determination of the required amount of wash liquor depending on the amount of laundry or the type of laundry, an effective reduction of the residual moisture of the laundry after the spin phase can be achieved. In a further advantageous embodiment of the laundry care apparatus, the level sensor comprises a pressure sensor, wherein the pressure sensor is adapted to detect a pressure of wash liquor in the tub and wherein the wash liquor supply means is adapted to supply the amount of wash liquor to the tub when the sensed pressure is a predetermined one Pressure threshold falls below.

As a result, the technical advantage is achieved that the combination of the pressure sensor with the Waschlaugenzuführeinrichtung allows washing liquor can be automatically fed through the Waschlaugenzuführeinrichtung the tub. The pressure sensor may be located at the bottom of the tub and may sense the pressure of wash liquor in the tub. The pressure sensor detects the pressure exerted by the column of wash liquor in the tub on the bottom of the tub. Thus, the detected pressure correlates directly with the level of wash liquor in the tub. If the detected pressure falls below a predetermined pressure threshold value, then the pressure sensor of the wash liquor supply device indicates that wash liquor should be added to the tub so as to prevent the liquor tank from running dry. Thus, the addition of wash liquor by the wash liquor supply can be automatically regulated depending on the detected pressure. Thus, by the use of the pressure sensor in conjunction with the Waschlaugezuführeinrichtung a trouble-free flow of the supply of heated wash liquor can be ensured in the washing drum. In a further advantageous embodiment of the laundry care appliance, the drive is designed, after the end of the third period, to drive the washing drum with a further spin frequency in order to spin-free the second amount of washing liquor from the laundry in the washing drum and to feed it to the washing tub. As a result, the technical advantage is achieved that after sufficient heating of the laundry in the washing drum, the second amount of wash liquor can be removed from the laundry, whereby the residual moisture of the laundry is reduced after the spin phase. When the temperature of the wash liquor is a sufficiently high temperature has reached, then it can be assumed that a sufficient amount of heat has been transferred from the wash to the laundry in the washing drum. Direct measurement of the temperature of the laundry in the washing drum may not be practical. After the laundry has reached the sufficient temperature, no re-supply of warm wash liquor by the feeder to the laundry in the washing drum is more necessary and the second amount of wash liquor can be thrown out of the laundry in the washing drum. After the end of the third period, a further centrifuging operation is carried out, in which the washing drum with a further spin frequency, in particular with a spin frequency of 300 revolutions per minute to 2000 revolutions per minute, is thrown. During the further spin process, the second amount of wash liquor is completely flung out of the laundry and can be taken up in the tub. The absorbed wash liquor can be pumped out through the drain pump and thus removed from the laundry care appliance. Thus, an effective reduction of the residual moisture in the laundry after the spin phase can be achieved by the subsequent further spinning process with the additional spin frequency.

In a further advantageous embodiment of the laundry care device, the drain pump is designed to pump the second amount of wash liquor from the tub after the third period.

As a result, the technical advantage is achieved that, after transferring a sufficient amount of heat from the wash liquor to the laundry, the no longer required second amount of wash liquor can be pumped out of the tub and removed from the laundry care appliance. As a result, the laundry is obtained with an advantageously reduced residual moisture after completion of the spin phase.

In a further advantageous embodiment of the laundry care appliance, the laundry care appliance comprises a temperature detection device, wherein the temperature detection device is designed to detect a temperature of wash liquor in the tub after the third period has ended, wherein the feed device is designed to re-inject the second amount of wash liquor from the tub Feed the interior of the washing drum when the detected Temperature of the wash liquor in the tub is below a predetermined temperature threshold, and wherein the drive is adapted to drive the washing drum again at the rotational frequency when the detected temperature of the wash liquor in the tub below a predetermined temperature threshold.

As a result, the technical advantage is achieved that the supply of heated wash liquor to the laundry in the washing drum is repeated until the temperature of the wash liquor in the tub reaches a predetermined temperature threshold. Since the temperature of the laundry in the washing drum often can not be measured directly for practical reasons, the predetermined temperature threshold is set to ensure that a sufficient amount of heat has been transferred from the wash to the laundry in the washing drum. By choosing the predetermined temperature threshold can be ensured that after completion of the spin phase, the residual moisture in the laundry is sufficiently low.

The temperature detecting means detects the temperature of washing liquor in the tub after the completion of the third period. If the detected temperature falls below a predetermined temperature threshold, then it is assumed that the laundry in the washing drum has not yet reached the required temperature. In this case, a repetition of the supply of heated wash liquor by the feeder into the washing drum is necessary, as well as a heating of the supplied wash liquor by the heat generating means and a driving of the washing drum with the rotational frequency by the drive. The supply of heated wash liquor can be repeated until the wash liquor in the tub reaches the predetermined temperature threshold. This can ensure that the laundry has a low residual moisture after completion of the spin phase. Further embodiments of the invention are illustrated in the drawings and will be described in more detail below.

Show it: Fig. 1 is a schematic representation of a laundry care device; and Fig. 2 is a schematic representation of a laundry care device. Fig. 1 shows a schematic representation of a general laundry care device 100, such. B. a washing machine. The laundry care appliance 100 comprises a storage container 101 into which detergent or other liquid substances can be introduced. The washing liquor required for the laundry care process is formed when water is supplied to the storage container 101 and mixes there with the detergent or with the other liquid substances. The interior of the laundry care device 100 comprises a tub 103 in which the generated wash liquor is received. A quantity of laundry may be introduced into a rotatably mounted washing drum 105, which is at least partially inserted into the tub 103. The laundry care device 100 comprises a drive 107 which drives the washing drum 105 and thus enables a rotation of the washing drum 105.

The lye pump 109 is designed to pump off washing liquor from the tub 103 and to supply it to the laundry in the washing drum 105 by means of a feed device 11. The heat generating device 1 13 is integrated into the feeder 1 1 1 and is adapted to heat the wash liquor, which is supplied by the feeder 1 1 1 of the washing drum 105, to a predetermined temperature.

Fig. 2 shows a schematic representation of a laundry care device 100, such as a washing machine. The laundry care device 100 comprises a tub 103, in which a rotatably mounted wash drum 105 is mounted, which can be operated by a drive 107. A quantity of wash liquor can be pumped out of the tub 103 by a drain pump 109 and fed back to the wash tub 105 by a feeder 11. The feeder 1 1 1 comprises a heat generating device 1 13 is heated by the guided through the feeder 1 1 1 wash liquor. The heat generating device 1 13 is integrated into the feeder 1 1 1. The axis of rotation 1 15 of the washing drum 105 is directed from the horizontal by an angle of about 13 ° forwardly upwards, so that one has easier access and insight into the interior of the washing drum 105. By this arrangement, in conjunction with devices 1 17 for moving laundry 123 in the washing drum 105 and with devices 1 19 for moving wash liquor 121 or warm water on the inner surface of the drum shell also an intensification of the wetting of the laundry 123 with wash liquor 121 and warm water reached. The devices 1 19 for moving wash liquor 121 in the washing drum 105 are designed such that they can move an advantageous amount of wash liquor 121 in the case of the right-hand rotation 125 of the washing drum 105 indicated here by the arrow.

The laundry care appliance 100 also has a liquor feed system which comprises a water connection fitting for the domestic water network 127, an electrically controllable two-way valve 129 and a supply line 131 to the tub 103, which may optionally also be passed through a wash liquor supply 133 from which the feed water differs in a wash phase Can carry amount of wash liquor 121 in the tub 103. The drive 107, the two-way valve 129 as well as the heat generating device 1 13 may be controlled by a control device 135 in response to a washing program, the time program and / or to achieve certain measurements of parameters such as level of the wash liquor 121 in the tub 103 , Lye temperature, speed of the laundry drum 105 may be bound within the laundry care device 100. After suitable evaluation, the controller 135 may be suitable, e.g. the heat generating device 1 13, the drive 107 and / or the drain pump 109 to control.

In addition, the loading amount of the washing drum 105 with laundry 123 can be taken into consideration by resorting to a relationship stored in the control means 135 between the amount of laundry or type of laundry and the amount of water. The tub 103 is equipped with a nozzle 137, which is designed so that the heated by the heat generating device 1 13 wash liquor 121 targeted to the laundry 123, which is located on an inner drum shell 139 of the washing drum 105, can be sprayed. The warm wash liquor 121 occurs from a Waschlaugenauslassöffnung 141 off. The supply of the nozzle 137 can be done using an electrically controllable three-way valve 143, which can be switched so that wash liquor 121, which is located in the tub 103, either the nozzle 137 or to a waste water discharge 145 can be conveyed. The suds pump 109 is adapted to supply a quantity of suds 121 from the suds container 103 through a supply line 147 to the nozzle 137. The supply line 147 comprises a first section 149, a second section 151 and a third section 153. The drain pump 109 is connected to the drain opening of the tub 103 through the first section 149 of the supply line 147. The three-way valve 143 is connected to the drain pump 109 through the second section 151 of the supply line 147. The three-way valve 143 is connected to the nozzle 137 through the third section 153 of the supply line 147. The three-way valve 143 includes two valve settings. In the first valve setting, a quantity of wash liquor 121 is supplied from the tub 103 through the third portion 153 of the supply pipe 147 to the nozzle 137 through the three-way valve 143. In the second valve setting, a quantity of wash liquor 121 is led out of the tub 103 by the three-way valve 143 from the laundry care apparatus 100 through the drainage valve 145.

The tub 103 may include a pressure sensor 155 for measuring the hydrostatic pressure p in the tub 103. The hydrostatic pressure p results from the fill level of the wash liquor 121. The signals of the driver 107, the pressure sensor 155, and a temperature detector 157 are supplied to the controller 135. With the temperature detection device 157 can be determined in particular whether the heating of the wash liquor 121 is sufficient or a renewed supply of heated wash liquor 121 by the feeder 1 1 1 is required.

After the heated wash liquor 121 in the wash 123 using the nozzle 137 and performing a Reversierzyklus in which the washing drum 105 at a speed below 60 revolutions per minute, preferably below 50 revolutions per minute, and more preferably below 40 revolutions per Minute is rotated, was distributed, the wash liquor 121 is pumped out in a final further centrifuging step with activated drain pump 109. It is obtained laundry 123 with a reduced residual moisture. All of the features explained and shown in connection with individual embodiments of the invention may be provided in different combinations in the article according to the invention in order to simultaneously realize their advantageous effects.

The scope of the present invention is given by the claims and is not limited by the features illustrated in the specification or shown in the figures.

LIST OF REFERENCE NUMBERS

100 laundry care device

101 storage tank

103 tubs

105 washing drum

107 drive

109 drain pump

1 1 1 feeder

1 13 heat generating device

1 15 axis of rotation of the washing drum

1 17 Device for moving laundry in the washing drum

1 19 Device for moving wash liquor in the washing drum

121 wash liquor

123 laundry

125 clockwise rotation of the washing drum

127 domestic water network

129 two-way valve

131 supply line

133 wash solution supply

135 control device

137 nozzle

139 drum casing

141 Wash outlet port

143 three-way valve

145 wastewater discharge

147 supply line

149 First section of the supply line

151 Second section of the supply line

153 Third section of the supply line

155 pressure sensor

157 temperature detection device

Claims

1. laundry care device (100) for the care of laundry (123), wherein the laundry care device (100) a tub (103) for receiving wash liquor (121), a rotatably mounted wash drum (105) for receiving laundry (123), a drive (107) for driving the washing drum (105), a drain pump (109) for pumping out washing liquor (121) from the tub (103), a feeding device (11) for supplying washing liquor (121) from the tub (103) in the washing drum (105), and a heat generating means (1 13) for heating by the supply means (1 1 1) guided wash liquor (121), characterized in that the drain pump (109) is formed, in a first period of a first To pump off amount of wash liquor (121) from the tub (103),

in that the drive (107) is designed to drive the washing drum (105) at a spin frequency in a second period following the first time period in order to obtain a second quantity of wash liquor (121) from the wash (123) in the wash drum (105). free to spin and to the tub (103) that the feed device (1 1 1) is formed, in a subsequent to the second period third period, the second amount of wash liquor (121) from the tub (103) the interior of the washing drum (105 ) to wet the laundry (123) in the washing drum (105),

in that the heat generating device (1 13) is designed to heat the second quantity of wash liquor (121) guided by the feed device (1 1 1) to a predetermined temperature in the third time period, the heat generating device (1 13) being fed into the feed device (1 1 1) is integrated,

in that the drive (107) is designed to drive the washing drum (105) at a rotational frequency in the third period in order to distribute the second quantity of washing liquor (121) in the laundry (123) located in the washing drum (105).

2. laundry care device (100) according to claim 1, characterized in that the rotational frequency is less than the spin frequency.

3. laundry care device (100) according to claim 1 or 2, characterized in that the feed device (1 1 1) comprises a feed line (147) and a nozzle (137) that the drain pump (109) is formed, the second amount of wash liquor (121) from the tub (103) through the supply line (147) of the nozzle (137) and that the nozzle (137) in the washing drum (105) is arranged.

4. laundry care device (100) according to claim 3, characterized in that the

Lye pump (109) through a first portion (149) of the supply line (147) with a drain opening of the tub (103) is connected.

The laundry care device (100) according to claim 3 or 4, characterized in that the supply line (147) comprises a three-way valve (143) which is connected to the drain pump (109) through a second section (151) of the supply line (147), which is connected to the nozzle (137) by a third section (153) of the supply line (147), and in that the laundry care device (100) comprises a waste water discharge line (145) for draining off washing liquor (121) from the laundry care device (100) the three-way valve (143) is adapted to supply the second quantity of wash liquor (121) through the third section (153) to the supply line (147) to the nozzle (137) in a first valve setting, and the second quantity of wash liquor (14) in a second valve setting ( 121) through the waste water discharge (145) from the laundry care device (100).

6. laundry care device (100) according to claim 5, characterized in that the

Three-way valve (143) between the second portion (151) and the third portion (153) of the supply line (147) in the supply line (147) is integrated.

7. laundry care device (100) according to any one of the preceding claims 5 or 6, characterized in that the third portion (153) of the supply line (147) comprises a riser, and that the riser outside the tub (103) in the laundry care device (100) is arranged.

8. laundry-care device (100) according to any one of the preceding claims, characterized in that the washing drum (105) comprises a device (1 17) for moving laundry (123) in the washing drum (105) or a device (1 19) for moving Washing liquor (121) in the washing drum (105).

9. laundry care device (100) according to any one of the preceding claims, characterized in that the laundry care device (100) comprises a temperature detecting means (157) for detecting a temperature of wash liquor (121) in the feed device (1 1 1).

10. laundry care device (100) according to any one of the preceding claims, characterized in that the laundry care device (100) comprises a level sensor and a Waschlaugenzuführeinrichtung (133) that the level sensor is adapted to a level of wash liquor (121) in the tub (103) and that the wash liquor supply device (133) is designed to supply a quantity of wash liquor (121) to the tub (103) when the detected fill level falls below a predetermined fill level threshold value.

11. The laundry care device according to claim 10, wherein the laundry care device comprises a load detection device, wherein the load detection device is configured to detect the amount of laundry or the type of laundry in the wash drum, and in that the wash liquor supply device ) is adapted to determine the amount of supplied wash liquor (121) depending on the detected amount of laundry or type of laundry.

12, laundry care device (100) according to claim 10 or 1 1, characterized in that the level sensor comprises a pressure sensor (155), and that the pressure sensor (155) is adapted to a pressure of wash liquor (121) in the tub (103) detecting, and that the Waschlaugenzuführeinrichtung (133) is adapted to supply the amount of wash liquor (121) to the tub (103) when the detected pressure falls below a predetermined pressure threshold.

13. laundry-care device (100) according to any one of the preceding claims, characterized in that the drive (107) is formed after the third period of time to drive the washing drum (105) with a further spin frequency to the second amount of wash liquor (121) the laundry (123) in the washing drum (105) freewheeling and feed the tub (103).

14, laundry care device (100) according to any one of the preceding claims, characterized in that the drain pump (109) is adapted to pump the second amount of wash liquor (121) from the tub (103) after the third period.

15. laundry care device (100) according to one of the preceding claims, characterized in that the laundry care device (100) comprises a temperature detection device (157),

in that the temperature detection device (157) is designed to detect a temperature of wash liquor (121) in the tub (103) after the end of the third time period,

in that the feed device (1 1 1) is designed to re-supply the second quantity of wash liquor (121) from the tub (103) to the interior of the wash drum (105) when the detected temperature of the wash liquor (121) in the tub (103) falls below a predetermined temperature threshold, and

in that the drive (107) is designed to drive the washing drum (105) again at the rotational frequency when the detected temperature of the washing liquor (121) in the tub (103) falls below a predetermined temperature threshold value.