RU2675461C2 - Linen care device with pump for washing solution - Google Patents

Abstract

FIELD: personal and household goods.SUBSTANCE: present invention relates to a laundry care device with a pumping system, the pumping system comprising a tank for cleaning solution with an inlet and a drain, a pipeline connecting the inlet and the drain, and a pump for the washing solution for pumping the washing solution through the pumping system, with a suction nozzle, with a pressure chamber that has a nozzle for pumping and a drain fitting, and with an impeller. Pump for the cleaning solution is made with the possibility of the pump supplying the cleaning solution in the current preferred direction of rotation of the impeller through the nozzle for pumping to the tank for the cleaning solution, and for pumping out the washing solution in the direction of rotation of the impeller when draining through the drain fitting, the drain fitting and the transfer fitting being adjacent to the pressure chamber in the tangential direction.EFFECT: device for clothes care is offered.14 cl, 4 dwg

Description

FIELD OF THE INVENTION

The present invention relates to a laundry care appliance with a washing solution pump.

State of the art

To be able to carry out an effective laundry care process, today large-capacity laundry care appliances have a pumping system that allows the washing solution to be pumped out of the washing solution tank and then again bringing it to the washing solution tank. In order to remove the washing solution from the laundry care appliance after the laundry care process, the laundry care appliances have today, moreover, a pumping system. A pumping system and a pumping system require pumps to ensure efficient pumping or pumping of the cleaning solution.

DE 3209542 C1 describes a radial centrifugal pump driven in a clockwise and counterclockwise direction as a circulation pump in a dishwasher.

Utility Model CN 201722529 U shows a washing machine including a pumping system.

Disclosure of the invention

The task underlying the invention is to indicate a device for the care of linen, which is designed to implement an effective process for the care of linen.

This problem is solved by the objects of the invention with features according to the independent claim. Preferred embodiments of the invention are the subject of figures, descriptions and dependent items.

According to a first aspect of the invention, the problem is solved by a laundry care device with a pumping system, the pumping system including a washing solution tank with an inlet and a drain hole, a pipe connecting the inlet and the drain hole, and a washing solution pump for pumping the washing solution through a pumping system, with a suction nozzle, with a pressure chamber having a nozzle for pumping and a drain fitting, and with an impeller, moreover, the pump for the washing solution is made n with the possibility of pumping the washing solution in the currently preferred direction of rotation of the impeller to the tank for the washing solution through the nozzle for pumping and for pumping the washing solution in the direction of rotation of the impeller when draining through the drain nozzle, the drain nozzle and the nozzle for pumping adjacent to the pressure head chamber in a tangential direction.

Due to this, a technical advantage is achieved, consisting in the fact that as a result of rotation of the impeller of the pump for the washing solution in the currently preferred direction, the washing solution from the pumping system through the nozzle for pumping and through the pipeline is again pumped to the tank for the washing solution, or as a result of rotation the impeller in the direction of the drain, the washing solution is pumped out through the drain fitting from the laundry care appliance. Thus, the pump for washing solution combines in one structural element the functions of pumping and pumping, depending on the chosen direction of rotation of the impeller.

Conventional laundry care products with a pumping system usually use washing solution pumps that are single-phase, with the same frequency of the network, and do not have a preferred direction of rotation, so they do not have a pump-out function that depends on the direction of rotation.

During the pumping process in the laundry care apparatus according to the present invention, the impeller of the washing solution pump moves in a certain preferred direction of rotation, the current preferred direction of rotation, in order to suck the washing solution from the pumping system through the suction port. The absorbed cleaning solution, after increasing its pressure, is transferred to the pressure chamber of the washing solution pump. In the pressure chamber, the washing solution is moved in a circular motion with the possibility of pumping it out of the pressure chamber through the pumping nozzle, which adjoins tangentially to the pressure chamber. In this case, it is crucial for the circular movement of the washing solution in the pressure chamber, continuing in the tangential direction in the pumping nozzle in order to ensure the washing solution is pumped out of the pressure chamber, is that the pumping nozzle is connected to the pressure chamber in the tangential direction. Due to the exact tangential location of the nozzle for pumping relative to the direction of flow of the washing solution in the pressure chamber, caused by the current preferred direction of rotation of the impeller, effective pumping of the washing solution through the nozzle for pumping is achieved without pumping the washing solution through the drain nozzle.

During the pump down process, the impeller of the washing solution pump moves in the direction of rotation when draining, which is opposite to the current preferred direction of rotation.

As a result, the suction washing solution moves in the pressure chamber in a circular motion, which is in the opposite direction to the movement of the washing solution in the pressure chamber with the current preferred direction of rotation of the impeller. This allows you to pump the cleaning solution from the pressure chamber in the direction of rotation when draining through the drain fitting, which is also connected to the pressure chamber in the tangential direction. Due to the exact tangential location of the nozzle for pumping relative to the direction of rotation during pumping, effective pumping of the washing solution through the drain nozzle is achieved, without pumping the washing solution through the nozzle for pumping. Thus, the pumping function or the pumping function of the washing solution pump is implemented, depending on the direction of rotation.

For this reason, the use of a pump for washing solution with the functions of pumping and pumping makes it possible to simplify the design and reduce costs when it is used in linen care devices, since only one engine with one hydraulic design is used. In addition, it is possible to replace existing pumps for washing solution with such a pump for washing solution without the need to change the places of mechanical coupling, as well as other elements of the pumping system, such as, for example, an inlet or outlet hose.

Under the device for care of linen refers to a device that is used to care for linen, for example, a washing machine or washer-dryer. In particular, such a laundry care appliance is understood to mean a household laundry care appliance. That is, such a device for the care of linen, which is used in the framework of housekeeping and which processes linen in quantities usual for domestic conditions.

In a preferred embodiment of the laundry care appliance, the pressure chamber has a pumping area with a pumping nozzle and a pumping area with a drain nozzle, and a partition is preferably located between the pumping region and the pumping region.

Due to this, a technical advantage is achieved, consisting in the fact that due to the separation of the pumping area from the pumping area, efficient separation of the pumping paths is provided for different directions of rotation of the impeller. The use of a partition between the pumping area and the pumping area can advantageously improve the separation of the pumping area and the pumping area. The septum creates a physical separation between the pumping area and the pumping area, so that with opposite directions of circular movement of the washing solution in the pressure chamber, blocking the movement of the washing solution in the pressure chamber to the pumping area or to the pumping area is achieved. As a result of this, the likelihood that during the pumping process the washing solution will be pumped out not from the pumping area but through the drain nozzle, or that during the pumping process the washing solution will pass not from the pumping area, but through the pumping nozzle.

In a further preferred embodiment of the laundry care appliance, the partition has a jumper for separating the pumping area and the pumping area.

Due to this, a technical advantage is achieved, namely, that with the use of a bulkhead jumper, a particularly effective separation of the pumping area and the pumping area is achieved.

In a further preferred embodiment of the laundry care appliance, the drain or pump nozzle is inclined relative to the vertical axis of the washing solution pump at a first angle, in particular at an angle of less than 30 °, or the suction nozzle is inclined relative to the vertical axis of the washing solution pump at a second angle, in particular at an angle of less than 90 °.

Due to this, a technical advantage is achieved, consisting in the fact that due to different angles of inclination of the drain nozzle, the nozzle for pumping or the suction nozzle relative to the vertical axis of the pump for the washing solution, it is possible to effectively remove air from the air mixture with the washing solution, which occurs when the washing solution is sucked through the suction branch pipe, through the drain union or the union for pumping. The vertical axis of the washing solution pump is perpendicular to the horizontal axis of the washing solution pump and runs in the middle between the drain fitting and the fitting for pumping the washing solution pump. The horizontal axis of the washing solution pump runs approximately parallel to the suction pipe. Due to the preferred location of the drain nozzle, the nozzle for pumping or the suction nozzle relative to the vertical axis of the pump for the washing solution, it is possible to efficiently pump out the potentially occurring two-phase mixture consisting of the washing solution and air, either through the drain nozzle or through the nozzle for pumping, which allows to ensure achieving an efficient pumping or pumping process.

In a further preferred embodiment of the laundry care appliance, the drain nozzle has a first diameter and the pump nozzle has a second diameter, the first diameter being larger than the second diameter.

This achieves the technical advantage that, due to the larger diameter of the drain nozzle compared to the nozzle for pumping through the drain nozzle, it is possible to pump out more washing solution over a certain period of time than through the nozzle for pumping at the same pump capacity for the washing pump solution. As a result of this, the pumping process preferably takes less time, so that it becomes possible to quickly drain the washing solution from the pumping system.

In a further preferred embodiment of the laundry care appliance, the impeller has a number of impeller blades, the impeller blades being curved.

This achieves the technical advantage that the curvature of the impeller blades allows you to precisely align the geometric characteristics of the impeller blades to provide a particularly preferred movement of the washing solution flow in the pressure chamber, in particular, to pump different amounts of washing solution or through a nozzle for pumping or through a drain fitting, depending on the direction of rotation of the impeller. It is possible, for example, to make curved impeller blades in such a way that, with the current preferred direction of rotation of the impeller, they preferably transport the washing solution to the nozzle for pumping the pressure chamber to make it possible to efficiently pump the washing solution in the pumping system. It is possible, for example, to make curved impeller vanes in such a way that when the impeller rotates in the discharge direction, they preferably transport the washing solution to the discharge fitting of the pressure chamber in order to ensure efficient pumping of the washing solution from the pumping system.

In a further preferred embodiment of the laundry care appliance, the laundry care appliance includes a power metering element for recording electric values of the pump for the washing solution, for example the electric current generating torque, and the laundry care appliance includes a system control, and the control system is designed to determine the flow rate of the washing solution in the pipeline, depending on the recorded value of the electric power of the pump for the washing solution solution, and the control system is designed to control the speed of the impeller, depending on the set flow rate of the washing solution.

Due to this, a technical advantage is achieved, consisting in the fact that as a result of determining the flow rate depending on the pump capacity, it becomes possible to easily and reliably control the pump capacity for the washing solution depending on the flow rate, without the need to incorporate an additional laundry care device into the pumping system structural element to account for flow rate. The power metering element allows, based on the recorded decrease in the electric power of the pump for the washing solution, to determine the decrease in flow rate, as a result of which the control system can accordingly control the speed of the impeller of the pump for washing solution.

In a further preferred embodiment of the laundry care appliance, the power metering element includes an electric current sensor for detecting a pump supply current value for the washing solution.

Due to this, a technical advantage is achieved, consisting in the fact that with the use of an electric current sensor, it is possible to efficiently control the pump for the washing solution without the need to install other sensor elements in the laundry care device. The electric current sensor includes an on-resistance, which detects the electric current supplying the pump for the washing solution for a certain period of time. The supply current of the washing solution pump depends on the amount of cleaning solution transported by the washing solution pump. If the amount of fluid transported by the pump decreases, this reduces the electric current supply to the pump.

In a further preferred embodiment of the laundry care appliance, the laundry care appliance includes a flow sensor for detecting a flow rate of the washing solution in the pumping system and a control system, the control system being configured to compare the flow rate detected by the flow sensor with the flow rate determined on the basis of the recorded value of the electric power of the pump for the washing solution, in order to obtain a control value, moreover, the control system It is possible to control the impeller speed depending on the control value obtained.

Due to this, a technical advantage is achieved, consisting in the fact that by comparing the flow rate recorded by the flow sensor with the flow rate determined based on the electric power of the pump for the washing solution, it is possible to accurately determine the flow rate of the washing solution in the pumping system. As a result of this, it is possible to effectively control the speed of the impeller of the pump for the washing solution depending on the flow rate.

In a further preferred embodiment of the laundry care appliance, the laundry care appliance has a receiver for storing a washing solution, the drain fitting being connected to the receiver via a drain line.

Due to this, a technical advantage is achieved, consisting in the fact that as a result of using the receiver, through the drain pipe connected to the drain fitting, that washing solution that is pumped out through the drain fitting during the pumping process is not removed from the laundry care device and is not discarded, but accumulated in the receiver. The detergent accumulated in the receiver can be reused during the next washing operation and again brought back from the receiver to the pumping system. Disposal of the accumulated detergent solution can effectively reduce water consumption and the consumption of detergent by the laundry care appliance.

In a further preferred embodiment of the laundry care appliance, the washing solution pump has a first diaphragm or a first nozzle in a drain fitting, or a second diaphragm or a second nozzle in a pump nozzle.

Due to this, a technical advantage is achieved, consisting in the fact that the use of a diaphragm or nozzle in the drain nozzle or in the nozzle for pumping achieves a reduction in the pressure of the washing solution pumped through the corresponding nozzles. Since additional pressure loss is created on the diaphragm, pressure reduction in the drain nozzle or in the nozzle for pumping allows you to preferentially calculate the pump for the washing solution to pump the washing solution out of the pressure chamber of the pump for the washing solution either through the drain nozzle or through the nozzle for pumping, depending from the direction of rotation of the impeller.

In a further preferred embodiment of the laundry care appliance, the first diaphragm or first nozzle in the drain fitting has a third diameter, and the second diaphragm or second nozzle in the pump nozzle has a fourth diameter, the third diameter being larger than the fourth diameter.

This achieves the technical advantage that the first diaphragm or first nozzle in the drain nozzle has a larger diameter than the second diaphragm or second nozzle in the pump nozzle. As a result of this, more washing solution can pass through the drain nozzle for a certain period of time than through the nozzle for pumping, at the same pump capacity for the washing solution. This makes it possible to efficiently and quickly drain the cleaning solution from the pumping system through the drain fitting.

In a further preferred embodiment of the laundry care appliance, the drain fitting is connected via a drain pipe to the drain hole of the laundry care appliance, the drain hole being located on the outside of the laundry care appliance at a first height, the first height being greater than the second height of the tub for a washing solution in a laundry care appliance.

Due to this, a technical advantage is achieved, consisting in the fact that as a result of the location of the drain hole on the outside of the laundry care appliance at a first height that is greater than the second height of the washing solution tank, that is, the location of the drain hole above the upper point of the pumping system, the pressure which must be created by the washing solution pump in order to pump the washing solution out of the laundry care device through the drain fitting and the drain hole, more than the pressure that must be created pump with a detergent solution to pump the detergent solution through the pump nozzle. Due to the pressure difference between the pumping and pumping processes, it is possible to achieve an effective choice, depending on the direction of rotation, the drain nozzle and the pumping nozzle relative to the pumping process or pumping process being carried out.

In a further preferred embodiment of the laundry care appliance, the washing solution pump must overcome the hydrostatic pressure at the drain during the pumping process, and the hydrostatic pressure in the pumping line during the pumping process, and in case of overcoming the hydrostatic pressure in the pumping line, the washing solution pump made with the possibility of pumping the washing solution through the nozzle for pumping in the current preferred direction of rotation of the impeller And in the case of overcoming a hydrostatic pressure on the pump for draining the washing solution is capable of pumping washing solution through the discharge nozzle in the impeller rotation direction when draining.

Due to this, a technical advantage is achieved, consisting in the fact that as a result of the hydraulic design of the pump for the washing solution, the washing solution is pumped out during the pumping process, or the washing solution is pumped out during the pumping process. Since the hydrostatic pressure overcome by the pump for the washing solution is different for the pumping and pumping processes, the pump for the washing solution is made in a specific way, designed to move the impeller either in the direction of rotation during draining to carry out the pumping process, or in the current preferred direction of rotation to conduct pumping process, depending on different hydrostatic pressure during pumping or hydrostatic pressure during pumping.

In a further preferred embodiment of the laundry care appliance, the laundry care appliance includes a washing drum for receiving laundry and a load meter for recording the weight of the laundry in the washing drum, the washing solution pump being configured to control the impeller speed depending on the recorded weight of the laundry in the washing drum.

Due to this, a technical advantage is achieved, consisting in the fact that using the load metering device, for example, a device for determining the weight of the laundry in the washing drum, it is possible to determine the weight of the laundry. Depending on the specific weight of the laundry, it is possible for the pump for the washing solution to increase the speed of the impeller with a large amount of linen in order to achieve efficient pumping of the washing solution and effective wetting of the laundry, which as a result allows for efficient heating of the washing solution in the pumping system.

In a further preferred embodiment of the laundry care appliance, the washing solution pump has a heating element that is configured to heat the washing solution in the washing solution pump.

Due to this, a technical advantage is achieved that, as a result of heating the washing solution in the washing solution pump by means of the heating element, a particularly efficient transfer of heat from the heating element to the washing solution is achieved due to the high flow rate of the washing solution in the washing solution pump.

Brief Description of the Drawings

Embodiments of the invention are presented in the drawings and are described in more detail below.

Showing:

FIG. 1 is a schematic view of a laundry care appliance;

FIG. 2 is a schematic view of a pumping system with a washing solution tank and with a guide element;

FIG. 3 side view of a pump for a washing solution;

and FIG. 4 is a side view of a washing solution pump.

The implementation of the invention

In FIG. 1 is a schematic view of a general type laundry treating apparatus 100, such as a washing machine. The laundry care appliance 100 includes a receiver 101, which is also referred to as a “flush tray”, and which makes it possible to fill it with detergents or other liquid substances. The laundry care apparatus 100 includes a door 103 for loading laundry into the laundry care appliance 100.

In FIG. 2 shows a pumping system 105 in a laundry care appliance 100 with a washing drum 107 for receiving laundry, with a washing solution tank 109 for containing a washing solution including an inlet 111 and a drain 113. The inlet 111 is connected to the drain hole 113 through the pipe 115. The pipe 115 includes a pump 117 for the washing solution, which allows the supply of the washing solution either during the pumping process, removing it through the drain hole 113 from the tank 109 for detergent ora and again entering the tank 109 to the cleaning solution through the inlet 111, either during the pumping process, evacuating the wash solution from the pumping system 105 through the drain pipe 119.

During the pumping process, most of the washing solution is pumped in the pumping system 105 through the conduit 115, so that only a part of the washing solution in the pumping system 105 is in the washing solution tank 109. During the pumping process, the washing solution in the washing solution tank 109 has a filling level 121 for pumping.

Before the pumping process, the washing solution is no longer supplied by the pump through the conduit 115, but is collected in the washing solution tank 109 so that it is available for pumping, the washing solution in the washing solution tank 109 having a filling level of 123 for pumping. Since the entire washing solution is in the washing solution tank 109 before the pumping process, the level 123 for pumping is greater than the level 121 for pumping.

In FIG. 3 is a side view of a washing solution pump. The washing solution pump 117 includes a suction chamber 125 into which it is possible to suck the washing solution from conduit 115, and a pressure chamber 127, from which the suction washing solution, after increasing its pressure, can be returned to the pumping system 105. In the washing solution pump 117 an impeller 129 is located, which can be made, for example, in the form of a propeller, which can have one or more impeller blades and which allows the washing solution to be transported after increasing its pressure from the suction chamber 125 to the pressure chamber 127. In FIG. 3, the impeller 129 cannot be shown, as it is located inside the washing solution pump 117.

In addition, the washing solution pump 117 includes a suction nozzle 131 located in the suction chamber 125 and connected to a pipe 115 of the pumping system 105 for suctioning the washing solution. The pressure chamber 127 includes a nozzle 133 for pumping, through which the pump 117 for washing solution can transfer the washing solution after increasing its pressure further into the pipeline 115 of the pumping system 105 and into the tank 109 for the washing solution. In addition, the pressure chamber 127 includes a drain fitting 135 adapted to be connected to the drain pipe 119 of the laundry care device 100 to pump the washing solution out of the pumping system 105 and from the laundry care device 100.

In FIG. 4 is a side view of a washing solution pump. The direction of view in FIG. 4 corresponds to the direction of the pressure chamber 127, the lid of the pressure chamber 127 being removed to show the interior of the pressure chamber 127. In the washing solution pump 117, an impeller 129 is located that is not visible in the selected image and which is capable of transporting the washing solution with increasing its pressure from the suction chamber 125, located in the drawing plane behind the pressure chamber 127 and not shown in FIG. 4 into the pressure chamber 127. The washing solution pump 117 is configured to move the impeller 129 in the current preferred direction of rotation 145 or in the direction of rotation 147 when draining. The current preferred direction of rotation 145 may extend, for example, counterclockwise. The direction of rotation 147 during the discharge can be, for example, clockwise.

The suction nozzle 131 is located in the suction chamber 125 to suck the cleaning solution from the pumping system 105. The suction pipe is inclined about 5 ° with respect to the horizontal axis 151 of the washing solution pump 117. The pressure chamber 127 includes a nozzle 133 for pumping, through which the pump 117 for the washing solution can transfer the washing solution after increasing its pressure further, into the pipeline 115 of the pumping system 105 and into the tank 109 for the washing solution. In addition, the pressure chamber 127 includes a drain fitting 135 adapted to be connected to the drain pipe 119 of the laundry care device 100 to pump the washing solution out of the pumping system 105 and from the laundry care device 100. The drain nozzle 135 and the nozzle 133 for pumping are inclined by approximately 30 ° relative to the vertical axis 149 of the pump 117 for the washing solution.

In addition, the pressure chamber 127 has a baffle 137 with a jumper 139, which is located in the pressure chamber 127 so that it separates the pumping region 141 of the pressure chamber 127 and the pumping region 143 of the pressure chamber 127. The pumping region 141 of the pressure chamber 127 is in contact with the nozzle 133 for pumping so that while the impeller 129 moves in the current preferred direction of rotation 145, transport the cleaning solution from the suction chamber 125 to the pressure chamber 127. The suction washing solution is brought to ugovoe movement in actual preferred direction of rotation 145 in the pressure chamber 127, and then transported to pump 141 and there is the possibility of pumping out of the pressure chamber 127 via the connection 133 to pumping, which is adjacent to the pressure chamber 127 in the tangential direction. In this case, the partition 137 with the jumper 139 creates an effective separation between the pumping area 141 and the pumping area 143, so that with the current preferred direction of rotation of the impeller 129 to prevent the possibility of pumping the suction washing solution partially also through the pumping area 143 and the drain fitting 135.

Since during operation of the laundry care appliance 100, the washing solution pump 117 pumps the washing solution predominantly in the pumping system 105 and only after the laundry care program has been completed pumps the washing solution out of the pumping system 105, the washing solution pump 117 is designed so that the actual a preferred direction of rotation 145 is preferable to a direction of rotation 147 during discharge.

When the impeller 129 moves in the direction of rotation 147 when draining, the washing solution from the suction chamber 125 is also transported to the pressure chamber 127. However, due to the other direction 147 of rotation of the impeller 129, the suction washing solution moves in the pressure chamber 127 in a circular motion in the direction of rotation 147 when discharge, and the direction of rotation 147 during discharge is opposite to the current preferred direction of rotation 145. As a result, the washing solution is transported to the pumping area 143, and it is possible to pump it out of the round pressure chamber 127 through a drain fitting 135, which is adjacent to the pressure chamber 127 in the tangential direction. In this case, the baffle 137 with a jumper 139 creates an effective separation between the pumping area 141 and the pumping area 143 in order to prevent the suction washing solution from being pumped out partially also through the pumping area 141 and the pump nozzle 133.

The operation of the washing solution pump 117 is based on different levels of filling with the washing solution of the pumping system 105 with respect to the pumping process or the pumping process. Since the washing solution before the pumping process is no longer associated with the laundry in the washing drum 107, but is in the washing solution tank 109, or in the pumping system 105, the filling level in the pumping system 105 before the pumping process is higher than during the pumping process, for example, equal to 80 cm, during which most of the washing solution exists bound in linen. Based on the different fill levels of the washing solution in the pumping system 105, a higher pressure occurs during the pumping process in the pump 117 for the washing solution than during the pumping process. It is possible to compensate for the pressure difference between the processes of pumping and pumping during the structural planning of the hydraulic flows of the pump 117 for the washing solution and the pipe 115 due to the optimized design of the cross sections and nozzle elements of the pump 117 for the washing solution, without a functional violation of the time and hydraulic separation of the two pump supply processes.

The implementation of precise planning for different feed streams during pumping or pumping processes is possible by optimizing the use of curved impeller blades 129 with preferred geometric characteristics, or by using pressure reducing elements, for example, orifice plates and nozzles, in the pump nozzle 133 or in the drain nozzle 135 , or by purposefully varying the number of revolutions of the impeller 129 depending on the flow conditions or on quantitative the flow of the washing solution in the pumping system 105. For example, it is also possible to use the positioning height of the drain hole of the laundry care apparatus 100 to realize a pressure difference between the pumping and pumping processes.

A prerequisite for such an implementation is the use of a reversed pump motor in order to move the impeller 129 of the washing solution pump 117 in the currently preferred rotation direction 145 or in the drain direction 147.

Thus, by using the pump 117 according to the invention for the washing solution, an effective separation of the pumping process and the pumping process is achieved depending on the different directions of rotation 145, 147 of the pump impeller 129. For the pumping and pumping systems 105 of the laundry care appliance 100, it is sufficient to use only one common motor, thereby eliminating costs, for example, due to the rejection of an additional set of cables. In addition, on the basis of the pumping process, it is possible to refuse the shutter of the sump of the tank 109 for the washing solution, so this function allows dispensing with the removal of detergents.

Back wetting, or erroneous separation of flow paths due to clogging, can be detected, and thereby prevented, by monitoring the motor current based on electric power on the washing solution pump 117.

Thus, the use of the pump 117 for the cleaning solution allows you to simplify the entire pumping system 105, resulting in a compact solution for pumping. It is possible to use the washing solution pump 117 also in the laundry care devices 100 with conventional pumping systems 105 without having to change the mechanical interface, i.e. it is possible to use the same inlet hose for the pumping system 105 or the outlet hose for the pumping system, which is usually used. The use of the nozzle 133 for pumping and the drain nozzle 135 allows for pumping or pumping out without a special control system for the pump 117 for the washing solution.

All the features explained and shown in combination with individual embodiments of the invention can be provided in the subject according to the invention in various combinations in order to simultaneously realize their preferred effects.

The scope of protection of this invention is defined by the claims and is not limited to the features explained in the description or shown in the figures.

Designations

100 laundry care appliance

101 receiver

103 door

105 pumping system

107 washing drum

109 tank for cleaning solution

111 inlet

113 drain hole

115 pipeline

117 pump for cleaning solution

119 drain pipe

121 filling level when pumping

123 pumping level

125 suction chamber

127 pressure chamber

129 impeller

131 suction pipe

133 pump fitting

135 drain fitting

137 partition

139 jumper

141 pumping area

143 pumping area

145 current preferred direction of rotation

147 secondary direction of rotation

149 vertical axis

151 horizontal axis.

Claims (17)

1. A laundry care device (100) with a pumping system (105), the pumping system (105) including a washing solution tank (109) with an inlet (111) and with a drain (113), a pipeline (115) ) connecting the inlet (111) and the drain hole (113), and the pump (117) for the washing solution for pumping the washing solution through the pumping system (105) with the suction pipe (131), with a pressure chamber (127), which has a nozzle (133) for pumping and a drain fitting (135), and with an impeller (129), characterized in that the pump (117) for the washing solution is configured to supply the washing solution in the currently preferred direction (145) of the rotation of the impeller (129) through the nozzle (133) for pumping to the tank (109) for the washing solution, and with the possibility of pumping the washing solution in the direction (147) the rotation of the impeller (129) when draining through the drain fitting (135), moreover, the drain fitting (135) and the nozzle (133) for pumping are adjacent to the pressure chamber (127) in the tangential direction, moreover, the discharge nozzle (135) or the nozzle (133) for pumping is inclined relative to the vertical axis (149) of the washing solution pump (117) at a first angle, in particular at an angle of less than 30 °, or the suction nozzle (131) is inclined relative to the vertical axis ( 149) of the pump (117) for the washing solution at a second angle, in particular at an angle of less than 90 °. 2. A laundry care device (100) according to claim 1, characterized in that the pressure chamber (127) has a pumping area (141) with a nozzle (133) for pumping and a pumping area (143) with a drain fitting (135), moreover, between the pumping region (141) and the pumping region (143), a partition (137) is preferably located. 3. A laundry care device (100) according to claim 2, characterized in that the partition (137) comprises a jumper (139) for separating the pumping area (143) and the pumping area (141). 4. A laundry care device (100) according to one of the preceding claims, characterized in that the drain fitting (135) has a first diameter, and the pump nozzle (133) has a second diameter, the first diameter being larger than the second diameter. 5. A laundry care device (100) according to one of the preceding claims, characterized in that the impeller (129) has several impeller blades, the impeller blades being curved. 6. The device (100) for the care of linen according to one of the preceding paragraphs, characterized in that the device (100) for the care of linen contains a power metering element for recording the electric power of the pump (117) for the washing solution, while the device (100 ) for linen care contains a control system, and the control system is configured to determine the flow rate of the washing solution in the pipeline (115) depending on the recorded value of the electric power of the pump (117) for the washing solution, while the system is controlled It is made with the possibility of controlling the speed of the impeller (129) depending on the set flow rate of the washing solution. 7. A laundry care device (100) according to claim 6, characterized in that the power metering element comprises an electric current sensor for detecting a pump supply current (117) for the washing solution. 8. Laundry care device (100) according to one of the preceding claims, characterized in that the laundry care device (100) has a receiver for storing the washing solution, the drain fitting (135) being connected to the receiver via a drain pipe (119) . 9. The device (100) for washing the laundry according to one of the preceding paragraphs, characterized in that the drain nozzle (135) of the pump (117) for the washing solution has a first diaphragm or a first nozzle, or in the nozzle (133) for pumping diaphragm or second nozzle. 10. Laundry care appliance (100) according to claim 9, characterized in that the first diaphragm or first nozzle in the drain fitting (135) has a third diameter, while the second diaphragm or second nozzle in the nozzle (133) for pumping has a fourth diameter, the third diameter being larger than the fourth diameter. 11. Laundry care device (100) according to one of the preceding claims, characterized in that the drain fitting (135) is connected via a drain pipe (119) to the drain hole of the laundry care device (100), the drain hole being located on the outside to the side of the laundry care appliance (100) at a first height, the first height being greater than the second height of the washing tub (109) in the washing appliance (100). 12. A laundry care device (100) according to one of the preceding claims, characterized in that the washing solution pump (117) is configured to overcome, during the pumping process, the hydrostatic pressure on the drain, and during the pumping process, the hydrostatic pressure when pumping, moreover, the pump (117) for the washing solution is configured to pump the washing solution in the currently preferred direction (145) of rotation of the impeller (129) through the nozzle (133) for pumping with overcoming the hydrostatic yes Lenia when pumping, and wherein the pump (117) for the detergent solution is capable of pumping the washing solution in the rotational direction (147) of the impeller (129) when discharging through the discharge port (135) to overcome the hydrostatic pressure at the sink. 13. A laundry care device (100) according to one of the preceding claims, characterized in that the laundry care device (100) comprises a washing drum (107) for receiving laundry and a load metering device for recording the weight of the laundry in the washing drum (107) ), while the pump (117) for the washing solution is configured to control the speed of the impeller (129) depending on the recorded weight of the laundry in the washing drum (107). 14. A laundry care device (100) according to one of the preceding claims, characterized in that the washing solution pump (117) has a heating element adapted to heat the washing solution in the washing solution pump (117).

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