CN109154123B - Laundry care appliance with pump control device - Google Patents
Laundry care appliance with pump control device Download PDFInfo
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- CN109154123B CN109154123B CN201780026566.3A CN201780026566A CN109154123B CN 109154123 B CN109154123 B CN 109154123B CN 201780026566 A CN201780026566 A CN 201780026566A CN 109154123 B CN109154123 B CN 109154123B
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- pump
- suction
- pumping
- connection
- pressure chamber
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/083—Liquid discharge or recirculation arrangements
- D06F39/085—Arrangements or adaptations of pumps
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/42—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to filters or pumps
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/10—Filtering arrangements
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention relates to a laundry care appliance (100) having a pump (105) for pumping washing liquid, the pump (105) comprising a suction chamber (107) and a circulating pumping pressure chamber (115), the circulating pumping pressure chamber (115) being fluidically connected to the suction chamber (107) via a circulating pumping suction connection (129), the pump (105) comprising a pumping-out pressure chamber (111) having a pumping-out pressure connection (113) for fluidically connecting to a pumping-out pressure tube, the pumping-out pressure chamber (111) being connected to the suction chamber (107) via a pumping-out suction connection (119), the pump (105) having a first pump motor (135) for pumping washing liquid out of the pumping-out pressure chamber (111) and a second pump motor (139) for pumping washing liquid out of the circulating pumping pressure chamber (115), the laundry care appliance having a pump control device (133) for controlling the first and second pump motors (135,139). The recirculating pump suction connection (129) and the pump-out suction connection (119) are coupled in terms of flow technology in the suction chamber (107). The pump (105) comprises a filter element for filtering dirt from the washing liquid, the filter element being arranged in the suction chamber (107). The pump control device (133) is configured to: activating one of the two pump motors (135,139) for an activation period for pumping washing liquid from the suction chamber (107) through the filter element and through one of the suction connections (119,129) into one of the pressure chambers (111,115), the activated pump motor (135,139) being configured for: during the activation period, washing liquid is sucked in from the other suction connection (119,129) in order to pump dirt accumulated on the other suction connection (119,129) through the filter element and through the one suction connection (119,129) into the one pressure chamber (111, 115).
Description
Technical Field
The invention relates to a laundry care appliance with a pump control device.
Background
For large loads, conventional laundry care appliances mostly have a circulating pumping system, by means of which the washing liquid is pumped out of the lye container and subsequently returned to the supply lye container. Conventional laundry care appliances also have a pump-out system in order to remove the washing liquor from the laundry care appliance after the laundry care process. For both circulation pumping systems and pumping-out systems, pumps are required to ensure effective circulation pumping of the washing liquid in or out of the laundry care appliance. The centrifugal pumps conventionally used have filter elements in the suction chamber, which are configured for: dirt entrained in the washing liquid is filtered out of the washing liquid, whereby the function of the pump can be ensured.
DE 10046349 a1 discloses a washing machine having a circulation pump and an outflow pump, wherein the circulation pump is provided on its suction side with a fine screen for filtering fluff and small dirt particles out of the washing liquid.
DE 10339130 a1 discloses a household machine with a circulation pump and a lye pump, which can be controlled by a central control and regulation unit.
WO 2011/147009 a2 shows a washing machine with a lye pump having a flexible filter insert for the circulating pumping branch (ummpzweig). During the pump-out operation of the lye pump, this filter insert can be flushed back by the remaining water which is driven off in the circulation pump line (gun ckgesp gun).
Disclosure of Invention
The invention is based on the task of: a laundry care appliance is proposed which has a pump which makes it possible to pump washing liquor efficiently in the laundry care appliance.
According to a first aspect of the invention, this object is achieved by a laundry care appliance having a pump for pumping washing liquid, wherein the pump comprises a suction chamber having a suction connection for fluidic connection to a suction line, wherein the pump comprises a circulation pumping pressure chamber having a circulation pumping pressure connection for fluidic connection to a circulation pumping pressure line, wherein the circulation pumping pressure chamber is fluidically connected to the suction chamber via a circulation pumping suction connection, wherein the pump comprises a pump-out pressure chamber having a pump-out pressure connection for fluidic connection to a pump-out pressure line, wherein the pump-out pressure chamber is connected to the suction chamber via a pump-out suction connection, wherein the pump has a first pump motor for pumping washing liquid out of the pump-out pressure chamber and a second pump motor for pumping washing liquid out of the circulation pumping pressure chamber, furthermore, the laundry care appliance has a pump control device for controlling the first motor and the second pump motor, wherein the recirculating pumping suction connection and the pumping suction connection are coupled in terms of flow technology in the suction chamber, wherein the pump comprises a filter element for filtering dirt from the washing liquid, wherein the filter element is arranged in the suction chamber, wherein the pump control device is configured to: activating one of the two pump motors for an activation period for pumping washing liquid from the suction chamber through the filter element and through one of the suction connections into one of the pressure chambers, and wherein the activated pump motor is configured for: during the activation period, washing liquid is sucked in from the other suction connection in order to pump dirt which has accumulated on the other suction connection through the filter element and through the one suction connection into the one pressure chamber.
This achieves the technical advantage that: dirt which has accumulated on one of the two suction connections can be effectively pumped out and removed via the other of the two suction connections by means of the recirculating pumping suction connection and the pumping-out suction connection which are coupled to one another in terms of flow technology. In this way, dirt (for example lint balls and/or foreign bodies) carried along in the washing liquid can be pumped out by means of the respective pump motor via the respective suction connection and via the respective pressure chamber.
In conventional laundry care appliances having a circulation pumping system and a pump-out system, the pump-out pressure chamber and the circulation pumping pressure chamber are each connected fluidically independently of the suction chamber, so that these flow paths do not influence one another and the cleaning function of these flow paths in the filter element of the suction chamber is not implemented. In most cases, screen filter elements are used, which, although filtering out dirt such as foreign bodies or pile accumulations and thus achieving pump protection, often result in frequent maintenance intervals for cleaning the filter elements.
The pump according to the invention comprises a filter element with a flow guide, wherein the flow paths influence one another in time one after the other, thereby achieving a mutual cleaning of the flow paths. This makes it possible to avoid: in particular the accumulation of fluff; associated therewith, a complete blockage of the flow path; the resulting laborious cleaning of the filter element. It must further be ensured that large foreign bodies are filtered out, in order to protect the pump impeller, or in order to prevent the pump motor from clogging. The filter element should be designed in particular such that the particularly narrow flow cross sections of the recirculating pump suction connection and of the recirculating pump pressure chamber are cleaned during the pump-out operation of the pump. For this purpose, the flow cross section in the filter element is designed in such a way that the suction openings of the recirculating pumping suction connection and the pump-out suction connection are arranged close to one another, and the blockage of the suction side of the recirculating pumping suction connection can be eliminated by the pumping-out through the pump-out suction connection which follows in time.
Another possibility of the design of such a cleaning function, in particular for a recirculating pumping system of a pump, consists in that the suction opening of the recirculating pumping connection is positioned in the region of the suction chamber (in particular the filter element), on which a high flow velocity occurs when pumping out through the pumping-out suction connection. If, for example, during the circulation pumping process, suction is taken in at right angles from the pump-out pressure connection via the circulation pumping suction connection, the circulation pumping suction connection is cleaned of dirt during the subsequent pumping-out process via the pump-out pressure connection.
Depending on the pump situation or the controlled function of the pump (in particular the pumping operation or the recirculation pumping operation), the washing liquid can thus be conveyed either via the pumping-out pressure chamber into the pumping-out pressure line or via the recirculation pumping-out pressure chamber into the recirculation pumping pressure line. However, in the case of a pump-out pressure chamber and also a circulating pump-out pressure chamber, which are fluidically connected to a suction chamber, there is the risk that: dirt can accumulate on the fluidic connection between the suction chamber and the circulating pumping pressure chamber, in particular in the filter element, and can block this fluidic connection. Since the flow guidance on the suction side is somewhat parallel in the pump, dirt which has accumulated on this connection can be removed during the pumping process via the pump-out pressure chamber into the pump-out pressure line. This new cleaning design of the circulation pumping system can be implemented for the circulation pumping circuit in such a way that: the flow cross sections of the pump-out suction connection and the pump-out pressure chamber are generally larger than the flow cross sections of the recirculating pumping suction connection and the recirculating pumping pressure chamber. This cleaning action avoids customer service investment and enables: so that the washing appliance with the circulating pumping system is similar in quality-technical terms to a washing appliance equipped with only the pumping-out system.
In the pump according to the invention, upon activation of the first or second pump motor, the washing liquid is actively pumped through the suction connection into the suction chamber, subsequently into the filter element in which the flow paths are divided, and subsequently either actively through the pump-out suction connection into the pump-out pressure chamber or through the circulating pump-out suction connection into the circulating pump-out pressure chamber. The cleaning fluid is sucked in from the suction chamber and the associated inactive suction connection by the flow-technical coupling of the pump-out suction connection to the circulating pump-out suction connection. In this case, lint and hair which have accumulated on the associated inactive suction connection are sucked in together with the washing liquid, whereby dirt (for example lint and hair) which has accumulated on the associated inactive suction connection can be removed.
The pump according to the invention thus makes it possible to: the accumulated dirt is effectively removed from the pump, particularly from the suction side of the circulating pumping circuit, whereby it is possible to prevent the flow path from being blocked on the suction side or to prevent the impeller of the first or second pump motor from being clogged with dirt (or foreign matter). Here, a pump with a self-cleaning function can be realized which requires almost no maintenance. Thus, in the event that the pump is completely blocked due to a severe accumulation of foreign matter or fluff, there is less likelihood of a service investment for the customer, mainly because the user is able to remove the blockage on the filter element himself.
By laundry care appliance is understood an appliance for laundry care, for example a washing machine or a laundry dryer. Such a laundry care appliance is understood to mean, in particular, a household laundry care appliance. Namely one such laundry care appliance: the laundry care appliance is used in the household area and is used to treat household laundry in the amount customary for household use.
In an advantageous embodiment of the laundry care appliance, the circulation pumping suction connection comprises a circulation pumping suction tube, wherein the circulation pumping suction tube has a circulation pumping suction tube input on a side facing the suction chamber, and the pump suction connection comprises a pump suction tube, wherein the pump suction tube has a pump suction tube input on a side facing the suction chamber, wherein the pump suction tube input is fluidically coupled to the circulation pumping suction tube input, wherein the pump control device is configured to: activating one of the two pump motors during an activation period for pumping washing liquid from the suction chamber through the filter element and through one of the suction tube inputs and through one of the suction tubes into one of the pressure chambers, and wherein the activated pump motor is configured for: during the activation period, washing liquid is sucked in from the further suction line inlet in order to pump dirt which has accumulated on the further suction line inlet through the filter element and through the one suction line inlet and through the one suction line into the one pressure chamber.
This achieves the technical advantage that: a particularly fluid-effective connection between the suction chamber and the circulating pumping pressure chamber is ensured by the circulating pumping suction tube, and a particularly fluid-effective connection between the suction chamber and the pumping pressure chamber is ensured by the pumping-out suction tube. The pump control device can ensure that: dirt that accumulates on the input of the pump-out suction pipe or the input of the circulation pump suction pipe can be effectively pumped out (or circulated). On the one hand, the intake end of the circulating suction tube can be embodied as a transverse bore or as a flanged angle piece (winkelsstu), or the circulating suction tube and the suction tube can be arranged, for example, parallel to one another, the intake end of the suction tube and the intake end of the suction tube being oriented relative to one another. These flow paths on the suction side are thus coupled in terms of flow technology in the filter element in such a way that a self-cleaning function of the inactive suction track (Ansaugtrack) is possible. The loosened dirt is conveyed out of the device either during the pump-out operation or, during the circulating pump-out operation, at least again into the washing drum via the circulating pump-out pressure chamber.
In an advantageous embodiment of the laundry care appliance, the circulation pump suction tube and the pump-out suction tube are arranged parallel at least in sections, and/or wherein the circulation pump suction tube input and the pump-out suction tube input face one another, and/or wherein the circulation pump suction tube input is arranged in the suction chamber laterally to the pump-out suction tube input, and wherein the circulation pump suction tube and the pump-out suction tube in particular enclose an angle.
This achieves the technical advantage that: the arrangement of the circulating pump suction pipe and the pump suction pipe in parallel at least in sections, whereby the circulating pump suction pipe input and the pump suction pipe input face each other, the arrangement of the circulating pump suction pipe input next to the pump suction pipe input, and/or the arrangement of the two suction pipes at an angle to each other, whereby the two suction pipe inputs are arranged in a particularly advantageous flow-technical manner in spatial proximity to each other inside the pump. This can ensure that: dirt which has accumulated on the respectively inactive intake end of the suction tube during the pumping-out process or during the circulating pumping process can be removed particularly effectively.
In an advantageous embodiment of the laundry care appliance, the input of the circulation pump suction line is fluidically coupled to the input of the pump suction line in order to ensure a cleaning function of the input of the circulation pump suction line or of the pump suction line.
This achieves the technical advantage that: the connection of the flow paths on the suction side enables a particularly flow-effective coupling between the circulating pump suction line input and the pump suction line input in order to remove dirt that has accumulated on one of the two suction line inputs particularly effectively.
In an advantageous embodiment of the laundry care appliance, the pump-out suction line has a pump-out suction line outlet on the side facing the pump-out pressure chamber, and the pump-out suction line between the pump-out suction line inlet and the pump-out pressure outlet has a pump-out suction line opening, wherein the pump-out suction line opening is fluidically connected to the circulation pump suction line inlet of the circulation pump suction line.
This achieves the technical advantage that: a particularly effective flow-technical coupling between the circulating suction line and the pump-out suction line can be established via the pump-out suction line opening of the pump-out suction line which is connected to the circulating pump-out suction line input of the circulating pump-out suction line. The circulation pump suction line is therefore fluidically connected to the pump suction line, so that during the circulation pump process the washing liquid is pumped in sections through the pump suction line, and the pumped washing liquid is subsequently pumped into the circulation pump suction line through the pump suction line opening through the circulation pump suction line inlet. The connection of the circulating pump suction line and the pump suction line between the pump suction line inlet and the pump pressure outlet makes it possible to remove dirt that has accumulated on the circulating pump suction line inlet in a particularly effective manner by means of the pump suction line during the pumping out of the liquid.
In an advantageous embodiment of the laundry care appliance, the circulation pumping suction connection comprises a circulation pumping pressure chamber opening which fluidically connects the suction chamber to the circulation pumping pressure chamber, wherein the pump-out suction connection comprises a pump-out suction tube having a pump-out suction tube inlet and a pump-out suction tube outlet, wherein a number of pump-out suction tube openings are arranged between the pump-out suction tube inlet and the pump-out suction tube outlet, wherein the pump-out suction tube openings are fluidically coupled to the circulation pumping pressure chamber opening.
This achieves the technical advantage that: dirt (for example lint or hair) which accumulates on these pump-out suction pipe openings (in particular the two pump-out suction pipe openings) can be pumped out particularly effectively through the pump-out suction pipe during the pump-out process. During the circulation pumping process, the washing liquid is supplied from the suction chamber into the common filter element via the pump-out suction pipe inlet, via the pump-out suction pipe opening and via the circulation pumping pressure chamber opening to the circulation pumping pressure chamber. Dirt entrained in the washing liquid can accumulate on the pump-out suction pipe openings and block them. In the case of pumping out the cleaning fluid from the suction chamber into the pump-out pressure chamber via the pump-out suction line, dirt which has accumulated on the opening of the pump-out suction line is sucked in and, together with the pumped-out cleaning fluid, is conveyed into the pump-out pressure chamber and out of the pump.
In an advantageous embodiment of the laundry care appliance, the pump-out suction tube opening has a pump-out suction opening diameter and the circulation pumping pressure chamber opening has a circulation pumping pressure chamber opening diameter, wherein the pump-out suction opening diameter is smaller than the circulation pumping pressure chamber opening diameter.
This achieves the technical advantage that: dirt which accumulates on the pump-out suction pipe opening through a smaller pump-out suction opening diameter compared to the circulating pump pressure chamber opening diameter can be pumped out particularly effectively during the subsequent pump-out process.
In an advantageous embodiment of the laundry care appliance, the pump control device is configured to: activating a first pump motor during an activation time period for pumping washing liquid from the suction chamber into the pump-out pressure chamber through the pump-out suction connection, wherein the first pump motor is configured for: during the activation time period, washing liquid is sucked in from the circulation pumping connection in order to pump dirt accumulated on the circulation pumping suction connection through the pump-out suction connection into the pump-out pressure chamber and out of the laundry care appliance through the pump-out pressure line.
This achieves the technical advantage that: by activating the first pump motor by the pump control device, dirt which has accumulated on the recirculating pump suction connection can be effectively removed during the pumping-out process of the washing liquid through the pump suction connection into the pump-out pressure chamber and fed into the pump-out pressure chamber for conveying the dirt out of the laundry care appliance through the pump-out pressure tube.
In an advantageous embodiment of the laundry care appliance, the pump control device is configured to: activating a second pump motor for an activation period for pumping washing liquid from the suction chamber into the circulating pumping pressure chamber via the circulating pumping connection, wherein the second pump motor is configured for: during the activation period, washing liquid is sucked in from the pump-out suction connection in order to pump dirt which has accumulated on the pump-out suction connection through the circulating pump-out suction connection into the circulating pump pressure chamber.
This achieves the technical advantage that: by activating the second pump motor by the pump control device, dirt accumulated on the pump-out suction connection can be effectively removed and supplied to the circulating pumping pressure chamber during the circulating pumping process of circulating the washing liquid through the circulating pumping suction connection into the circulating pumping pressure chamber.
In an advantageous embodiment of the laundry care appliance, the filter element has a pump-out flow path and a circulation pump flow path, wherein the pump-out flow path is fluidically connected to the suction connection and to the pump-out suction connection, wherein the circulation pump flow path is fluidically connected to the suction connection and to the circulation pump suction connection, wherein the respective pump motor is designed to: dirt received in the respective flow path is loosened during the activation time period and pumped into the respective pressure chamber through the respective suction connection.
This achieves the technical advantage that: a particularly effective filtering (or blocking) of the dirt from the washing liquid is achieved by the different flow paths in the filter element received in the suction chamber. This makes it possible to reduce the amount of dirt which is transported from the suction chamber into the pump-out pressure chamber or into the circulating pump-out pressure chamber. Foreign bodies or fluff balls which cannot be pumped out or cannot be pumped out are caught on the filter element, small accumulations are filtered out and flushed away and pumped out of the pump by the self-cleaning action when the function is switched between circulating pumping and pumping out.
In an advantageous embodiment of the laundry care appliance, the filter element comprises a foreign-matter collector for removing dirt from the washing liquid, wherein the foreign-matter collector comprises a plate which extends in the flow direction and which has, in particular, an edge which is forward in the flow direction, wherein dirt can accumulate on the forward edge, or wherein the foreign-matter collector comprises, in particular, a receiving region for receiving dirt.
This achieves the technical advantage that: the foreign-matter trap, unlike other filter elements (e.g. screens), is not clogged by accumulated dirt, so that it does not have to be cleaned periodically during the service life of the appliance of the laundry care appliance, since it is designed in such a way that it blocks foreign matter during the service life of the appliance, but is not clogged by lint balls, as may occur in the case of screen filters. These contaminants removed from the washing liquid by the foreign-matter trap can be pumped out of the pump during the pumping-out process by means of the pump-out pressure chamber and through the pump-out pressure line. An effective accumulation of dirt can be achieved, for example, by a plate element which extends in the pumping direction and has an edge which is forward in the pumping direction. At the same time, this leading edge has a low flow resistance, so that the washing liquid flow of the washing liquid pumped by the pump is not significantly damaged by the plate elements, but foreign bodies can nevertheless be successfully precipitated. This filter function can also be achieved by a suction tube which sucks in from a collection area for foreign bodies or other dirt. Here, an arrangement with parallel suction duct guides and suction ducts arranged at right angles to one another can be distinguished. Furthermore, the foreign-matter collector can comprise a collecting region in which dirt can be deposited and can thus be received, in particular due to the gentle flow of the washing liquid. Depending on the design, foreign bodies or accumulations of fluff hair can accumulate in this collecting region for longer service periods or over the entire service life of the appliance.
In an advantageous embodiment of the laundry care appliance, the first pump motor or the second pump motor comprises an electric motor, in particular a brushless direct current motor (BLDC motor) or a permanently energized brushless synchronous motor, which can be operated, in particular, with a variable rotational speed.
This achieves the technical advantage that: an effective circulating pumping of the washing liquid from the circulating pumping pressure chamber into the circulating pumping pressure line or an effective pumping of the washing liquid from the pump-out pressure chamber into the pump-out pressure line can be achieved by the first pump motor and by the second pump motor. Furthermore, with this drive design, the pump power for the pump motor can be increased by increasing the rotational speed, so that, in the event of a blockage on the filter element on the suction side, cleaning or flushing is achieved by an increased flow speed.
According to a second aspect of the invention, the object is achieved by a method for pumping washing liquor in a laundry care appliance having a pump for pumping washing liquor, wherein the pump comprises a suction chamber having a suction connection for a fluidic connection to a suction line, wherein the pump comprises a circulation pumping pressure chamber having a circulation pumping pressure connection for a fluidic connection to a circulation pumping pressure line, wherein the circulation pumping pressure chamber is fluidically connected to the suction chamber via a circulation pumping suction connection, wherein the pump comprises a pump-out pressure chamber having a pump-out pressure connection for a fluidic connection to a pump-out pressure line, wherein the pump-out pressure chamber is connected to the suction chamber via a pump-out suction connection, wherein the pump has a first pump motor for pumping washing liquid from the pump-out pressure chamber and a second pump motor for pumping washing liquid from the circulating pumping pressure chamber, and the laundry care appliance has a pump control device for controlling the first motor and the second pump motor, wherein the pump-out suction connection and the circulating pump-out suction connection are coupled in terms of flow technology in the suction chamber, wherein the pump comprises a filter element for filtering dirt from the washing lye, wherein the filter element is arranged in the suction chamber, wherein the method comprises activating one of the two pump motors during an activation period, for pumping washing liquid from the suction chamber through the filter element and through one of the suction connections into one of the pressure chambers, wherein the activated pump motor is configured for: during the activation period, washing liquid is sucked in from the other suction connection in order to pump dirt which has accumulated on the other suction connection through the filter element and through the one suction connection into the one pressure chamber.
This achieves the technical advantage that: by the coupling of the circulating pumping suction connection with the pumping-out suction connection in terms of flow technology, dirt which has accumulated on one of the suction connections can be pumped out into the associated pressure chamber via the other of the suction connections during the activation time period and then pumped out of the laundry care appliance or circulated in the laundry care appliance, so that the accumulated dirt does not accumulate on one of the two pump motors, for example on one of the blades of the pump motors.
In an advantageous embodiment of the method, the method comprises activating a first pump motor during an activation period for pumping washing liquid from the suction chamber, through the filter element and through the pump-out suction connection into the pump-out pressure chamber, wherein the first pump motor is configured for: during the activation period, the washing liquid is sucked in from the circulation pumping suction connection in order to pump dirt accumulated on the circulation pumping suction connection through the filter element and through the pump-out suction connection into the pump-out pressure chamber.
This achieves the technical advantage that: dirt which has accumulated on the recirculating pump suction connection can be pumped efficiently into the pump-out pressure chamber via the pump suction connection.
In an advantageous embodiment of the method, the method comprises activating a second pump motor during an activation period for pumping washing liquid from the suction chamber through the filter element through the circulating pumping suction connection into the circulating pumping pressure chamber, wherein the second pump motor is configured for: during the activation period, washing liquid is sucked in from the pump-out suction connection in order to pump dirt which accumulates on the pump-out suction connection through the filter element and through the circulating pumping suction connection into the circulating pumping pressure chamber.
This achieves the technical advantage that: dirt which has accumulated on the pump-out suction connection can be effectively pumped through the circulating pumping suction connection into the circulating pumping pressure chamber.
Drawings
Further embodiments are explained with reference to the drawings. The figures show:
fig. 1 shows a schematic view of a laundry care appliance;
fig. 2 shows a schematic view of a pump of a laundry care appliance according to an embodiment in a sectional view;
fig. 3 shows a schematic view of a pump of a laundry care appliance according to a further embodiment in a sectional view;
fig. 4 shows a flow chart of a method for pumping washing liquid in a laundry care appliance.
Detailed Description
Fig. 1 shows a schematic view of a generic laundry care appliance 100, for example a washing machine. The laundry care appliance 100 comprises a rinsing housing 101, into which rinsing housing 101 a detergent or other liquid substance can be injected. The laundry care appliance 100 comprises a door 103 for loading the laundry care appliance 100 with laundry.
Fig. 2 shows a schematic view of a pump of a laundry care appliance according to an embodiment in a sectional view. The laundry care appliance 100 comprises a pump 105 for pumping washing liquid. The pump 105 is fluidically connected to a suction line for sucking in a washing liquid through the suction line. The pump 105 is connected to a pump-out pressure line of the laundry care appliance 100 for pumping out washing liquid from the laundry care appliance 100 via the pump-out pressure line. The pump 105 is connected to the circulation pump pressure line of the laundry care appliance 100 for circulating the washing liquid in the laundry care appliance 100, i.e. for pumping the washing liquid out of the lye container of the laundry care appliance 100 via the circulation pump pressure line and for resupplying the pumped-out washing liquid to the lye container. The suction line, the pump-out pressure line and the circulation pump pressure line are not shown in fig. 2.
The pump 105 comprises a suction chamber 107, the suction chamber 107 having a suction connection 109, the suction connection 109 in turn being fluidically connectable to a suction line. Furthermore, the pump 105 comprises a pump-out pressure chamber 111, the pump-out pressure chamber 111 having a pump-out pressure connection 113, the pump-out pressure connection 113 in turn being fluidically connectable to a pump-out pressure line. Furthermore, the pump 105 comprises a circulating pumping pressure chamber 115, the circulating pumping pressure chamber 115 having a circulating pumping pressure connection 117, which circulating pumping pressure connection 117 can in turn be fluidically connected to a circulating pumping pressure line of the circulating pumping system. A filter element for filtering the washing liquid is arranged in the suction chamber 107, wherein the filter element is not shown in fig. 2.
The suction chamber 107 is connected to the pump-out pressure chamber 111 via a pump-out suction connection 119, which pump-out suction connection 119 is in particular configured as a pump-out suction tube 121. The pump-out suction pipe 121 has a pump-out suction pipe outlet 123 on the side facing the pump-out pressure chamber 111 and a pump-out suction pipe inlet 125 on the side facing the suction chamber 107. A pump-out suction tube opening 127 is disposed between the pump-out suction tube input 125 and the pump-out suction tube output 123. The pump-out suction pipe opening 127 may in particular comprise a number of pump-out suction pipe openings 127 (in particular two or more pump-out suction pipe openings 127).
The suction chamber 107 is fluidically connected to the recirculating pumping pressure chamber 115 via a recirculating pumping suction connection 129, the recirculating pumping suction connection 129 comprising in particular a recirculating pumping pressure chamber opening 131.
When the pump control device 133 of the laundry care appliance 100 activates the first pump motor 135 connected to the pump-out pressure chamber 111, the washing liquid is sucked into the suction chamber 107 via the suction connection 109 and the sucked-in washing liquid is pumped via a filter element, not shown in fig. 2, via the pump-out suction line inlet 125, via the pump-out suction line 121 and via the pump-out suction line outlet 123 into the pump-out pressure chamber 111 in the pump-out flow direction 137. During the pumping-out process, dirt (for example lint or hair) arranged on the circulation pumping suction connection 129 (in particular the circulation pumping pressure chamber opening 131) is sucked in from the circulation pumping suction connection 129 for pumping the dirt through the pumping-out suction connection 119 into the pumping-out pressure chamber 111.
When the pump control device 133 of the laundry care appliance 100 activates the second pump motor 139 connected to the circulation pumping pressure chamber 115, washing liquid is sucked into the suction chamber 107 via the suction connection 109 and the sucked-in washing liquid is pumped into the circulation pumping pressure chamber 115 via the circulation pumping suction connection 129 in the circulation pumping flow direction 141 via a filter element, not shown in fig. 2. Dirt (e.g., lint or hair) disposed in the pump-out suction connection 119 (in particular the pump-out suction tube 121) is sucked in from the pump-out suction connection 119 for pumping the dirt through the circulating pump-out suction connection 129 into the circulating pump pressure chamber 115.
In general, when the washing liquid is pumped out through the pump-out suction connection 119, a greater transport flow occurs than when the washing liquid is pumped in circulation through the circulation pump-out suction connection 129. The pump-out suction connection 119 (in particular the pump-out suction tube 121) thus has a larger inner diameter than the circulation pump-out suction connection 129 (in particular the circulation pump-out suction tube 143). Thus, a substantially similar flow velocity of the washing liquid can be achieved for pumping out through the pump-out suction connection 119 and for circulating pumping through the circulating pumping suction connection 129. A similar cleaning effect is thus achieved when the washing liquid is guided in a targeted, defined flow.
As a result of the smaller conveying flow during the circulating pumping of the washing liquid, a smaller flow cross section can be produced for the circulating pumping suction connection 129 than for the pumping-out suction connection 119. Cleaning of the circulation pumping suction connection 129 is therefore of greater importance than cleaning of the pumping suction connection 119, since there is a higher risk of blockage in the case of smaller flow cross sections and comparable flow speeds.
In the embodiment shown in fig. 2, the pump-out suction line opening 127 is smaller in design than the circulating pump pressure chamber opening 131 in order to prevent foreign bodies and to prevent fluff from agglomerating. The product of the number and size of these pump-out suction-pipe openings 127 (overall flow cross section) is in particular of the same size as the circulating pumping-chamber opening 131 or of a smaller size than the circulating pumping-chamber opening 131, and the pump-out suction-pipe inlet 125 of the pump-out suction pipe 121 should also be smaller than or equal to the diameter of the pump-out suction-pipe outlet 123 in order to filter out blockages or dirt in front of the pump-out pressure chamber 111 and thus in front of the rotating pump impeller. In addition, these flow cross sections should be kept as large as possible, so that no additional, large pressure losses occur in the filter element. The geometry of the pump-out suction tube 121, the number and the inner diameter of the pump-out suction tube openings 127 are particularly advantageously determined experimentally and can be adapted to the conditions of the pump 105. Depending on the design of the laundry care appliance 100 (in particular with regard to the geometry of the drum openings and the collar gap), different requirements arise for the pump with regard to the risk of soiling, in particular the hair load and the fluff load.
The pump 105 according to the invention thus achieves effective protection against jamming of the working wheels of the first or second pump motor 135, 139. The flow path within the pump 105 can be designed such that the filter element is cleaned by flushing the filter dirt, by operating the pump 105 with respect to the pumping-out function and by operating the pump 105 with respect to the circulating pumping-out function, so that the pump 105 has a self-cleaning effect.
For the user of the laundry care appliance 100, the following advantages result from this. A pump 105 with a self-cleaning function on the filter element is provided which is almost maintenance-free, so that pump repair periods for the case of a filter element clogging in the case of a severe fluff attack or foreign body attack do not occur as frequently. There is less likelihood of customer service involvement in the event of a complete pump blockage due to foreign object or significant fluff insult.
Fig. 3 shows a schematic representation of a pump of a laundry care appliance according to a further embodiment in a sectional illustration, in which the suction pipes of the pump 105 are arranged parallel to one another and the openings of the suction pipes are opposite (or face one another). The laundry care appliance 100 comprises a pump 105 for pumping washing liquid. The pump 105 comprises a suction chamber 107, the suction chamber 107 having a suction connection 109, the suction connection 109 in turn being fluidically connectable to a suction line. Furthermore, the pump 105 comprises a pump-out pressure chamber 111, the pump-out pressure chamber 111 having a pump-out pressure connection 113, the pump-out pressure connection 113 in turn being fluidically connectable to a pump-out pressure line for pumping out washing liquid from the laundry care appliance 100 via the pump-out pressure line. Furthermore, the pump 105 comprises a circulation pumping pressure chamber 115, the circulation pumping pressure chamber 115 having a circulation pumping pressure connection 117, the circulation pumping pressure connection 117 in turn being fluidically connectable to a circulation pumping pressure line of a circulation pumping system for circulating the washing liquor in the laundry care appliance 100. A filter element for filtering the washing liquid is arranged in the suction chamber 107, wherein the filter element is not shown in fig. 3.
The suction chamber 107 is connected to the pump-out pressure chamber 111 via a pump-out suction connection 119, which pump-out suction connection 119 is in particular configured as a pump-out suction tube 121. The pump-out suction pipe 121 has a pump-out suction pipe outlet 123 on the side facing the pump-out pressure chamber 111 and a pump-out suction pipe inlet 125 on the side facing the suction chamber 107.
The suction chamber 107 is connected to the circulating pumping pressure chamber 115 via a circulating pumping suction connection 129, said circulating pumping suction connection 129 comprising in particular a circulating pumping suction tube 143. The circulating pumping suction tube 143 has a circulating pumping suction tube output 145 on a side facing the circulating pumping pressure chamber 115 and a circulating pumping suction tube input 147 on a side facing the suction chamber 107.
The pump-out suction line input 125 of the pump-out suction line 123 is coupled to the circulation pump-out suction line input 147 of the circulation pump-out suction line 143 in terms of flow technology. The flow-technical coupling between the pump suction line input 125 and the recirculating pump suction line input 147 is thus achieved: the circulating suction pipe 143 and the pump-out suction pipe 121 are arranged parallel at least in sections, and the pump-out suction pipe input 125 and the circulating pump-out suction pipe input 147 are arranged laterally side by side in the suction chamber 107, or the pump-out suction pipe input 125 and the circulating pump-out suction pipe input 147 face each other.
When the pump control device 133 of the laundry care appliance 100 activates the first pump motor 135 connected to the pump-out pressure chamber 111, the washing liquid is sucked into the suction chamber 107 via the suction connection 109 and the sucked-in washing liquid is pumped via a filter element, not shown in fig. 3, via the pump-out suction line inlet 125, via the pump-out suction line 121 and via the pump-out suction line outlet 123 in the pump-out flow direction 137 into the pump-out pressure chamber 111 and is then pumped out of the laundry care appliance 100. Through the flow-technical coupling between the circulating pumping suction line input 147 and the pump-out suction line input 125, dirt (for example lint or hair) which has accumulated on the circulating pumping suction connection 129 (in particular the circulating pumping suction line input 147 of the circulating pumping suction line 143) is sucked in from the circulating pumping suction connection 129 in order to pump the dirt through the pump-out suction connection 119 into the pump-out pressure chamber 111.
When the pump control device 133 of the laundry care appliance 100 activates the second pump motor 139 connected to the circulation pumping pressure chamber 115, the washing liquid is sucked into the suction chamber 107 via the suction connection 109 and the sucked-in washing liquid is pumped into the circulation pumping pressure chamber 115 via the circulation pumping suction connection 129, in particular via the circulation pumping suction tube input 147, via the circulation pumping suction tube 143 and via the circulation pumping suction tube output 145, in the circulation pumping flow direction 141. Dirt (for example lint or hair) which has accumulated in the pump-out suction connection 119 (in particular the pump-out suction tube input 125 of the pump-out suction tube 121) is sucked in from the pump-out suction connection 119 for pumping the dirt through the circulating pump-out suction connection 129 into the circulating pump pressure chamber 115 for resupplying the washing liquid to the washing drum.
Fig. 4 shows a flowchart of a method 200 for pumping washing liquid in a laundry care appliance 100 with a pump 105, the pump 105 being described with reference to fig. 2 and 3.
As separate method steps, the method 200 includes: during the activation time period, one of the two pump motors 135,139 described above is activated 201 for pumping washing liquid from the suction chamber 107 through one of the suction connections 119,129 into one of the pressure chambers. Here, the activated pump motors 135,139 are configured for: during the activation time period, washing liquid is sucked in from the other suction connection 119,129 for pumping dirt accumulated on the other suction connection 119,129 through the one suction connection 119,129 into the one pressure chamber 111, 115. This enables dirt that accumulates on the suction connections 119,129 to be removed effectively.
All features explained and illustrated in conjunction with the individual embodiments of the invention can be provided in different combinations in the subject matter according to the invention to achieve their advantageous effects at the same time.
The scope of protection of the invention is derived from the claims and is not limited by the features explained in the description or shown in the drawings.
List of reference numerals
100 washing nursing device
101 punch-in shell
103 door
105 pump
107 suction lumen
109 suction connection
111 pump-out pressure chamber
113 pump-out pressure connection pipe
115 circulating pumping pressure chamber
117 circulating pumping pressure connecting pipe
119 pump out suction connection
121 pump suction pipe
123 pump out of the output end of the suction pipe
125 pump suction pipe input end
127 pump suction tube opening
129 cycle pumping suction connection
131 circulation pumping pressure cavity opening
133 pump control device
135 first pump motor
137 pump-out flow direction
139 second pump motor
141 circulation pumping flow direction
143 circulation pumping suction pipe
145 output end of suction pipe for circular pumping
Input end of suction pipe for 147 circulation pumping
200 method for pumping washing liquid in a laundry care appliance
201 activating one of two pump motors
Claims (14)
1. A laundry care appliance (100) having a pump (105) for pumping washing liquid,
wherein the pump (105) comprises a suction chamber (107) having a suction connection (109) for the fluidic connection to a suction line,
wherein the pump (105) comprises a circulating pumping pressure chamber (115) having a circulating pumping pressure connection (117) for the fluidic connection to a circulating pumping pressure line,
wherein the circulating pumping pressure chamber (115) is fluidically connected to the suction chamber (107) by a circulating pumping suction connection (129),
wherein the pump (105) comprises a pump-out pressure chamber (111) having a pump-out pressure connection (113) for the fluidic connection to a pump-out pressure line,
wherein the pump-out pressure chamber (111) is connected to the suction chamber (107) via a pump-out suction connection (119),
wherein the pump (105) has a first pump motor (135) for pumping washing liquid from the pump-out pressure chamber (111) and a second pump motor (139) for pumping washing liquid from the circulating pumping pressure chamber (115), and
the laundry care appliance has a pump control device (133) for controlling a first pump motor and a second pump motor (135,139),
wherein the circulating pumping suction connection (129) and the pumping-out suction connection (119) are coupled in terms of flow technology in the suction chamber (107), and
the pump (105) comprises a filter element for filtering contaminants from the washing liquid,
wherein the filter element is arranged in the suction chamber (107),
wherein the pump control device (133) is configured to: activating one of the two pump motors (135,139) for an activation period in order to pump washing liquid from the suction chamber (107) through the filter element and through one of the suction connections (119,129) into one of the pressure chambers (111,115), and
wherein the activated pump motor (135,139) is configured for: drawing in washing liquid from the other suction connection (119,129) during the activation period in order to pump dirt accumulated on the other suction connection (119,129) through the filter element and through the one suction connection (119,129) into the one pressure chamber (111,115),
it is characterized in that the preparation method is characterized in that,
the circulating pumping suction connection (129) comprises a circulating pumping pressure chamber opening (131) which fluidically connects the suction chamber (107) to the circulating pumping pressure chamber (115),
wherein the pump-out suction connection (119) comprises a pump-out suction tube (121) having a pump-out suction tube input (125) and a pump-out suction tube output (123),
wherein at least one pump-out suction pipe opening (127) is arranged between the pump-out suction pipe input (125) and the pump-out suction pipe output (123),
wherein the at least one pump-out suction tube opening (127) is flow-technically coupled to the circulating pumping pressure chamber opening (131).
2. Laundry care appliance (100) according to claim 1,
it is characterized in that the preparation method is characterized in that,
two or more pump-out suction tube openings (127) are arranged between the pump-out suction tube input (125) and the pump-out suction tube output (123),
wherein the pump-out suction tube opening (127) is fluidically coupled to the circulating pumping pressure chamber opening (131).
3. The laundry care appliance (100) according to any of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the pump-out suction tube opening (127) has a pump-out suction opening diameter, and
the circulation pumping pressure chamber opening (131) has a circulation pumping pressure chamber opening diameter,
wherein the pump-out suction opening diameter is smaller than the circulation pumping pressure opening diameter.
4. A laundry care appliance (100) having a pump (105) for pumping washing liquid,
wherein the pump (105) comprises a suction chamber (107) having a suction connection (109) for the fluidic connection to a suction line,
wherein the pump (105) comprises a circulating pumping pressure chamber (115) having a circulating pumping pressure connection (117) for the fluidic connection to a circulating pumping pressure line,
wherein the circulating pumping pressure chamber (115) is fluidically connected to the suction chamber (107) by a circulating pumping suction connection (129),
wherein the pump (105) comprises a pump-out pressure chamber (111) having a pump-out pressure connection (113) for the fluidic connection to a pump-out pressure line,
wherein the pump-out pressure chamber (111) is connected to the suction chamber (107) via a pump-out suction connection (119),
wherein the pump (105) has a first pump motor (135) for pumping washing liquid from the pump-out pressure chamber (111) and a second pump motor (139) for pumping washing liquid from the circulating pumping pressure chamber (115), and
the laundry care appliance has a pump control device (133) for controlling a first pump motor and a second pump motor (135,139),
wherein the circulating pumping suction connection (129) and the pumping-out suction connection (119) are coupled in terms of flow technology in the suction chamber (107), and
the pump (105) comprises a filter element for filtering contaminants from the washing liquid,
wherein the filter element is arranged in the suction chamber (107),
wherein the pump control device (133) is configured to: activating one of the two pump motors (135,139) for an activation period in order to pump washing liquid from the suction chamber (107) through the filter element and through one of the suction connections (119,129) into one of the pressure chambers (111,115), and
wherein the activated pump motor (135,139) is configured for: drawing in washing liquid from the other suction connection (119,129) during the activation period in order to pump dirt accumulated on the other suction connection (119,129) through the filter element and through the one suction connection (119,129) into the one pressure chamber (111,115),
the circulation pumping suction connection (129) comprises a circulation pumping suction pipe (143),
wherein the circulating pumping suction tube (143) has a circulating pumping suction tube input (147) on a side facing the suction chamber (107), and
the pump-out suction connection (119) comprises a pump-out suction tube (121),
wherein the pump-out suction tube (121) has a pump-out suction tube input (125) on a side facing the suction chamber (107),
wherein the pump-out suction pipe input (125) is flow-technically coupled to the circulating pump-out suction pipe input (147),
wherein the pump control device (133) is configured to: activating one of the two pump motors (135,139) for the activation period in order to pump washing liquid from the suction chamber (107) through the filter element and through one of the suction line inputs (125, 147) and through one of the suction lines (121, 143) into one of the pressure chambers (111,115), and
wherein the activated pump motor (135,139) is configured for: drawing in washing liquid from the further suction tube inlet (125, 147) during the activation time period in order to pump dirt accumulated on the further suction tube inlet (125, 147) through the filter element and through the one suction tube inlet (125, 147) and through the one suction tube (121, 143) into the one pressure chamber (111,115),
it is characterized in that the preparation method is characterized in that,
the pump-out suction pipe (121) has a pump-out suction pipe outlet (123) on a side facing the pump-out pressure chamber (111),
the pump-out suction pipe (121) has a pump-out suction pipe opening (127) between the pump-out suction pipe input (125) and the pump-out suction pipe output (123), and
the pump-out suction tube opening (127) is fluidically connected to a circulating pump suction tube input (147) of the circulating pump suction tube (143).
5. The laundry care appliance (100) of claim 4,
it is characterized in that the preparation method is characterized in that,
the circulating pump suction pipe (143) and the pump suction pipe (121) are arranged parallel at least in sections,
wherein the circulatory pumping suction pipe input (147) and the pump suction pipe input (125) face each other, or
Wherein the circulating pumping suction tube input (147) is arranged in the suction chamber (107) laterally of the pumping suction tube input (125), and
wherein the circulating pumping suction tube (143) and the pump-out suction tube (121) enclose an angle.
6. The laundry care appliance (100) of claim 4 or 5,
it is characterized in that the preparation method is characterized in that,
the circulating pump suction line input (147) is fluidically coupled to the pump suction line input (125) in order to ensure a cleaning function of the circulating pump suction line input (147) or of the pump suction line input (125).
7. The laundry care appliance (100) of claim 4 or 5,
it is characterized in that the preparation method is characterized in that,
the pump control device (133) is configured to: activating a first pump motor (135) during the activation time period for pumping washing liquid from the suction chamber (107) through the pump-out suction connection (119) into the pump-out pressure chamber (111),
wherein the first pump motor (135) is configured for: during the activation time period, washing liquid is sucked in from the circulation pumping connection (129) in order to pump dirt accumulated on the circulation pumping connection (129) through the pump-out suction connection (119) into the pump-out pressure chamber (111) and out of the laundry care appliance (100) through the pump-out pressure line.
8. The laundry care appliance (100) of claim 4 or 5,
it is characterized in that the preparation method is characterized in that,
the pump control device (133) is configured to: activating a second pump motor (139) during the activation period for pumping washing liquid from the suction chamber (107) through the circulating pumping suction connection (129) into the circulating pumping pressure chamber (115),
wherein the second pump motor (139) is configured for: -sucking in washing liquid from the pump-out suction connection (119) during the activation period for pumping up dirt accumulated on the pump-out suction connection (119) through the circulation pump suction connection (129) into the circulation pump pressure chamber (115).
9. The laundry care appliance (100) of claim 4 or 5,
it is characterized in that the preparation method is characterized in that,
the filter element has a pump-out flow path and a cyclical pump-in flow path,
wherein the pump-out flow path is connected in terms of flow technology to the suction connection (109) and to the pump-out suction connection (119),
wherein the recirculating pumping flow path is connected in terms of flow technology to the suction connection (109) and to the recirculating pumping connection (129), and
wherein the respective pump motor (135,139) is configured for: dirt received in the respective flow path is loosened during the activation period and pumped into the respective pressure chamber (111,115) through the respective suction connection (119, 129).
10. The laundry care appliance (100) of claim 4 or 5,
it is characterized in that the preparation method is characterized in that,
the filter element comprises a foreign-matter collector for removing dirt from the washing liquid,
wherein the foreign-matter collector comprises a plate extending in the flow direction, the plate having an edge which is forward in the flow direction,
in which dirt can accumulate on the front edge, or
Wherein the foreign-matter collector comprises a receiving area for receiving dirt.
11. The laundry care appliance (100) of claim 4 or 5,
it is characterized in that the preparation method is characterized in that,
the first pump motor (135) or the second pump motor (139) comprises an electric motor, which can be operated with a variable rotational speed.
12. Laundry care appliance (100) according to claim 11,
it is characterized in that the preparation method is characterized in that,
the first pump motor (135) or the second pump motor (139) comprises a brushless direct current motor (BLDC motor) or a permanently excited brushless synchronous motor.
13. A method (200) for pumping washing liquid in a laundry care appliance (100) having a pump (105) for pumping washing liquid,
wherein the pump (105) comprises a suction chamber (107) having a suction connection (109) for the fluidic connection to a suction line,
wherein the pump (105) comprises a circulating pumping pressure chamber (115) having a circulating pumping pressure connection (117) for the fluidic connection to a circulating pumping pressure line,
wherein the circulating pumping pressure chamber (115) is fluidically connected to the suction chamber (107) by a circulating pumping suction connection (129),
wherein the pump (105) comprises a pump-out pressure chamber (111) having a pump-out pressure connection (113) for the fluidic connection to a pump-out pressure line,
wherein the pump-out pressure chamber (111) is connected to the suction chamber (107) via a pump-out suction connection (119),
wherein at least one pump-out suction pipe opening (127) is arranged between the pump-out suction pipe input (125) and the pump-out suction pipe output (123),
wherein the pump (105) has a first pump motor (135) for pumping washing liquid from the pump-out pressure chamber (111) and a second pump motor (139) for pumping washing liquid from the circulating pumping pressure chamber (115), and
the laundry care appliance has a pump control device (133) for controlling a first pump motor and a second pump motor (135,139),
wherein the pump-out suction connection (119) and the circulating pump-out suction connection (129) are coupled in terms of flow technology in the suction chamber (107), and
wherein the pump (105) comprises a filter element for filtering contaminants from the washing liquid,
wherein the filter element is arranged in the suction chamber (107),
the method (200) comprises:
-activating (201) one of the two pump motors (135,139) during an activation period for pumping washing liquid from the suction chamber (107) through the filter element and through one of the suction connections (119,129) into one of the pressure chambers (111,115),
wherein the activated pump motor (135,139) is configured for: drawing in washing liquid from the other suction connection (119,129) during the activation period in order to pump dirt accumulated on the other suction connection (119,129) through the filter element and through the one suction connection (119,129) into the one pressure chamber (111,115),
it is characterized in that the preparation method is characterized in that,
activating a first pump motor (135) connected to the pump-out pressure chamber (111) for sucking washing liquid through the suction connection (109) into the suction chamber (107) and for pumping the sucked-in washing liquid through a filter element through a pump-out suction tube input (125), through a pump-out suction tube (121) and through a pump-out suction tube output (123) into the pump-out pressure chamber (111) in a pump-out flow direction (137),
wherein dirt located on the circulation pumping suction connection (129) is sucked in from the circulation pumping suction connection (129) during a pumping-out process for pumping dirt into the pump-out pressure chamber (111) through the pump-out suction connection (119).
14. A method (200) for pumping washing liquid in a laundry care appliance (100) having a pump (105) for pumping washing liquid,
wherein the pump (105) comprises a suction chamber (107) having a suction connection (109) for the fluidic connection to a suction line,
wherein the pump (105) comprises a circulating pumping pressure chamber (115) having a circulating pumping pressure connection (117) for the fluidic connection to a circulating pumping pressure line,
wherein the circulating pumping pressure chamber (115) is fluidically connected to the suction chamber (107) by a circulating pumping suction connection (129),
wherein the pump (105) comprises a pump-out pressure chamber (111) having a pump-out pressure connection (113) for the fluidic connection to a pump-out pressure line,
wherein the pump-out pressure chamber (111) is connected to the suction chamber (107) via a pump-out suction connection (119),
wherein the pump (105) has a first pump motor (135) for pumping washing liquid from the pump-out pressure chamber (111) and a second pump motor (139) for pumping washing liquid from the circulating pumping pressure chamber (115), and
the laundry care appliance has a pump control device (133) for controlling a first pump motor and a second pump motor (135,139),
wherein the pump-out suction connection (119) and the circulating pump-out suction connection (129) are coupled in terms of flow technology in the suction chamber (107), and
wherein the pump (105) comprises a filter element for filtering contaminants from the washing liquid,
wherein the filter element is disposed in the suction chamber,
the method (200) comprises:
-activating (201) one of the two pump motors (135,139) during an activation period for pumping washing liquid from the suction chamber (107) through the filter element and through one of the suction connections (119,129) into one of the pressure chambers (111,115), wherein,
the activated pump motor (135,139) is designed to: drawing in washing liquid from the other suction connection (119,129) during the activation period in order to pump dirt accumulated on the other suction connection (119,129) through the filter element and through the one suction connection (119,129) into the one pressure chamber (111,115),
it is characterized in that the preparation method is characterized in that,
activating a first pump motor (135) connected to the pump-out pressure chamber (111) for sucking washing liquid through the suction connection piece (109) into the suction chamber (107) and for pumping the sucked-in washing liquid through a filter element through a pump-out suction tube input (125), through a pump-out suction tube (121) and through a pump-out suction tube output (123) in a pump-out flow direction (137) into the pump-out pressure chamber (111) and then out of the laundry care appliance (100),
wherein dirt accumulated on the circulation pumping suction connection (129) is sucked in at a circulation pumping suction tube input (147) of a circulation pumping suction tube (143) from the circulation pumping suction connection (129) by means of a flow-technical coupling between the circulation pumping suction tube input (147) and the pump-out suction tube input (125) for pumping dirt through the pump-out suction connection (119) into the pump-out pressure chamber (111).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016207391.5A DE102016207391A1 (en) | 2016-04-29 | 2016-04-29 | Laundry care device with a pump control |
| DE102016207391.5 | 2016-04-29 | ||
| PCT/EP2017/058819 WO2017186500A1 (en) | 2016-04-29 | 2017-04-12 | Laundry-care appliance comprising a pump controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109154123A CN109154123A (en) | 2019-01-04 |
| CN109154123B true CN109154123B (en) | 2020-11-10 |
Family
ID=58537016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780026566.3A Active CN109154123B (en) | 2016-04-29 | 2017-04-12 | Laundry care appliance with pump control device |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3449053B1 (en) |
| CN (1) | CN109154123B (en) |
| DE (1) | DE102016207391A1 (en) |
| PL (1) | PL3449053T3 (en) |
| WO (1) | WO2017186500A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019201845A1 (en) * | 2019-02-13 | 2020-08-13 | BSH Hausgeräte GmbH | Household appliance for treating laundry |
| DE102019207346A1 (en) * | 2019-05-20 | 2020-11-26 | BSH Hausgeräte GmbH | Laundry care device with a pump |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10046349A1 (en) * | 2000-09-19 | 2002-03-28 | Bsh Bosch Siemens Hausgeraete | Domestic electrical appliance e.g. washing machine or dishwasher has recycled water passed through filter at entry of circulation pump in reverse direction for removal of trapped particles |
| WO2011147009A2 (en) * | 2010-05-26 | 2011-12-01 | Electrolux Do Brasil S.A. | Improvement of self-cleaning filter for washing machines |
| CN102421957A (en) * | 2009-05-11 | 2012-04-18 | 伊莱克斯家用产品股份有限公司 | Laundry washing appliance |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE50309889D1 (en) | 2002-08-23 | 2008-07-03 | Aweco Appliance Sys Gmbh & Co | HOUSEHOLD MACHINE |
-
2016
- 2016-04-29 DE DE102016207391.5A patent/DE102016207391A1/en not_active Ceased
-
2017
- 2017-04-12 PL PL17716914T patent/PL3449053T3/en unknown
- 2017-04-12 CN CN201780026566.3A patent/CN109154123B/en active Active
- 2017-04-12 WO PCT/EP2017/058819 patent/WO2017186500A1/en active Application Filing
- 2017-04-12 EP EP17716914.1A patent/EP3449053B1/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10046349A1 (en) * | 2000-09-19 | 2002-03-28 | Bsh Bosch Siemens Hausgeraete | Domestic electrical appliance e.g. washing machine or dishwasher has recycled water passed through filter at entry of circulation pump in reverse direction for removal of trapped particles |
| CN102421957A (en) * | 2009-05-11 | 2012-04-18 | 伊莱克斯家用产品股份有限公司 | Laundry washing appliance |
| WO2011147009A2 (en) * | 2010-05-26 | 2011-12-01 | Electrolux Do Brasil S.A. | Improvement of self-cleaning filter for washing machines |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109154123A (en) | 2019-01-04 |
| PL3449053T3 (en) | 2020-11-30 |
| EP3449053B1 (en) | 2020-06-10 |
| WO2017186500A1 (en) | 2017-11-02 |
| EP3449053A1 (en) | 2019-03-06 |
| DE102016207391A1 (en) | 2017-11-02 |
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