Dishwasher and method of controlling dishwasher

Abstract

This dishwasher may comprise: a tub; a water storage chamber, below the tub, for storing water from inside the tub; a filter which is disposed inside the water storage chamber, and which filters the water flowing into the water storage chamber; a drain pump for discharging, to the outside, the water accommodated in the water storage chamber; and a control unit including at least one processor having a processing circuit. On the basis of the elapse of a designated soaking time after a water supply operation or a spray operation is terminated, the control unit can control the drain pump such that the water accommodated in the water storage chamber is discharged to the outside.

Description

Dishwashers and methods of controlling dishwashers

[0001] The present disclosure relates to a dishwasher and a method for controlling the dishwasher.

[0002] A dishwasher is a device that automatically washes food residue and other debris from dishes using detergent and water.

[0003] A dishwasher may include a tub, a storage container disposed inside the tub to store dishes, a sump for storing water under the tub, and a filter for filtering foreign substances contained in water flowing toward the sump.

[0004] If the filter becomes heavily contaminated, the dishwasher's cleaning efficiency will be reduced and an unpleasant odor may occur. Therefore, the filter needs to be cleaned periodically.

[0005] Embodiments of the present disclosure provide a dishwasher and a control method of the dishwasher with improved usability.

[0006] Embodiments of the present disclosure provide a dishwasher and a control method of the dishwasher capable of automatically cleaning a filter.

[0007] Embodiments of the present disclosure provide a dishwasher and a control method of the dishwasher that can easily remove foreign substances attached to a filter by calling the filter.

[0008] According to an exemplary embodiment of the present disclosure, a dishwasher may include: a tub; a water storage chamber configured to store water within the tub under the tub; a filter disposed within the water storage chamber and configured to filter water flowing into the water storage chamber; a drain pump configured to discharge water contained in the water storage chamber to the outside; and a control unit including at least one processor having a processing circuit. The control unit is configured to control the drain pump based on the elapse of a specified soaking time after a water supply operation for supplying water to the water storage chamber or a spray operation for spraying water into the inside of the tub is terminated, and may perform a drain operation for discharging water contained in the water storage chamber to the outside.

[0009] According to an exemplary embodiment of the present disclosure, in a control method of a dishwasher, the dishwasher may include a tub, a water storage chamber configured to store water in the tub, a filter disposed inside the water storage chamber, a water supply valve, a drain pump, and a circulation pump. The control method of the dishwasher may include: performing a water supply operation for supplying water to the water storage chamber by controlling the water supply valve, or performing a spray operation for spraying water stored in the water storage chamber into the tub by controlling the circulation pump. The control method of the dishwasher may include: performing a drain operation for discharging water stored in the water storage chamber to the outside by controlling the drain pump based on a specified soaking time elapsed after the water supply operation or the spraying operation is completed.

[0010] The above and other aspects, features and advantages of specific embodiments of the present disclosure will become more apparent from the following description taken in conjunction with the accompanying drawings, in which:

[0011] FIG. 1 is a perspective view of a dishwasher according to various embodiments;

[0012] FIG. 2 is a side cross-sectional view of a dishwasher according to various embodiments;

[0013] FIG. 3 is a perspective view illustrating the lower portion of a dishwasher according to various embodiments;

[0014] FIG. 4 is a perspective view illustrating a sump assembly of a dishwasher according to various embodiments;

[0015] FIG. 5 is an exploded perspective view showing the distribution cover and distribution disc in the sump assembly of the dishwasher illustrated in FIG. 4 in an exploded state according to various embodiments;

[0016] FIG. 6 is an exploded perspective view showing a state in which a filter assembly is disassembled from a sump assembly of a dishwasher illustrated in FIG. 4 according to various embodiments;

[0017] FIG. 7 is a side cross-sectional view of the sump assembly of the dishwasher illustrated in FIG. 4 according to various embodiments;

[0018] FIG. 8 is a perspective view illustrating some components of a dishwasher according to various embodiments;

[0019] FIG. 9 is a perspective view illustrating some components of the dishwasher illustrated in FIG. 8 from another direction according to various embodiments;

[0020] FIG. 10 is a perspective view showing some components of the dishwasher illustrated in FIG. 8 from a different direction than FIG. 9 according to various embodiments;

[0021] FIG. 11 is a bottom view of some components of the dishwasher illustrated in FIG. 8 according to various embodiments;

[0022] FIG. 12 is an exploded perspective view showing a state in which a circulation pump, a drain pump, and a flow path structure are disassembled in some configurations of the dishwasher illustrated in FIG. 8 according to various embodiments;

[0023] FIG. 13 is an exploded perspective view showing a state in which a circulation pump, a drain pump, and a flow path structure are disassembled in some configurations of the dishwasher illustrated in FIG. 8 according to various embodiments;

[0024] FIG. 14 is an exploded perspective view showing a state in which a circulation pump, a drain pump, and a flow path structure are disassembled in some configurations of the dishwasher illustrated in FIG. 8 according to various embodiments;

[0025] FIG. 15 is a perspective view schematically illustrating a filter cleaning structure of a dishwasher according to various embodiments;

[0026] FIG. 16 is a perspective view illustrating the filter cleaning structure of the dishwasher illustrated in FIG. 15 from another direction according to various embodiments;

[0027] FIG. 17 is a drawing illustrating how water flows into a circulation pump according to various embodiments;

[0028] FIG. 18 is a drawing showing the flow of water pumped by a circulation pump during a water supply operation or a spraying operation according to various embodiments;

[0029] FIG. 19 is a drawing showing the flow of water pumped by a circulation pump during a water supply operation or a spraying operation according to various embodiments;

[0030] FIG. 20 is a drawing showing the flow of water pumped by a circulation pump during bottom cleaning of a filter according to various embodiments;

[0031] FIG. 21 is a cross-sectional perspective view illustrating water being sprayed by a first cleaning nozzle during bottom cleaning of a filter according to various embodiments;

[0032] FIG. 22 is a drawing showing the flow of water pumped by a circulation pump during filter top cleaning according to various embodiments;

[0033] FIG. 23 is a cross-sectional perspective view illustrating water being sprayed by a second cleaning nozzle during upper filter cleaning according to various embodiments;

[0034] FIG. 24 is a control block diagram illustrating an exemplary configuration of a dishwasher according to various embodiments;

[0035] FIG. 25 is a flowchart illustrating an example of the overall operation of a dishwasher according to various embodiments;

[0036] FIG. 26 is a flowchart illustrating an example of a control method of a dishwasher according to various embodiments;

[0037] FIG. 27 is a flowchart illustrating an example of a control method of a dishwasher according to various embodiments;

[0038] FIG. 28 is a flowchart illustrating an example of a control method of a dishwasher according to various embodiments;

[0039] FIG. 29 is a flowchart illustrating an example of a control method of a dishwasher according to various embodiments;

[0040] FIG. 30 is a table illustrating an example of the operation of dishwasher configurations according to various embodiments;

[0041] FIG. 31 is a timing diagram illustrating an example of the operation of dishwasher configurations according to various embodiments;

[0042] FIG. 32 is a timing diagram illustrating an example of the operation of dishwasher configurations according to various embodiments;

[0043] FIG. 33 is a timing diagram illustrating an example of the operation of dishwasher configurations according to various embodiments.

[0044] It should be understood that the various exemplary embodiments and terminology used in this document are not intended to limit the technical features described in this document to specific embodiments, but rather to encompass various modifications, equivalents, or alternatives of the embodiments.

[0045] In connection with the description of the drawings, similar reference numerals may be used for similar or related components.

[0046] The singular form of a noun corresponding to an item may include one or more of said items, unless the relevant context clearly indicates otherwise.

[0047] In this disclosure, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" may include any one of the items listed together in the corresponding phrase, or all possible combinations thereof.

[0048] The term "and / or" is understood to include any combination of a plurality of related described elements or any one of a plurality of related described elements.

[0049] Terms such as "first," "second," or "first" or "second" may be used simply to distinguish one component from another and do not qualify the components in any other respect (e.g., importance or order).

[0050] When a component (e.g., a first component) is referred to as being "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it can mean, for example, that the component is connected to the other component directly (e.g., wired), wirelessly, or via a third component.

[0051] Terms such as "include" or "have" are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in the present disclosure, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0052] When a component is described as being "connected," "coupled," "supported," or "in contact with" another component, this includes instances where the components are directly connected, coupled, supported, or in contact, as well as instances where the components are indirectly connected, coupled, supported, or in contact through a third component.

[0053] When a component is said to be "on" another component in this disclosure, this includes not only cases where the component is in contact with the other component, but also cases where another component exists between the two components.

[0054] The terms "part," "module," and "member" may be implemented in hardware or software. Depending on the embodiments, multiple "parts," "modules," or "members" may be implemented as a single component, or a single "part," "module," or "member" may include multiple components.

[0055] Terms such as "~bu", "~gi", "~block", "~absence", and "~module" may refer to a unit that processes at least one function or operation. For example, the terms may refer to at least one piece of hardware such as an FPGA (field-programmable gate array) / ASIC (application specific integrated circuit), at least one piece of software stored in memory, or at least one process processed by a processor.

[0056] The symbols attached to each step are used to identify each step and do not indicate the order of the steps, and the steps may be performed in a different order than stated unless the context clearly indicates a specific order.

[0057] The terms "front", "back", "left", "right", "upper", "lower", etc. used in the following description are defined based on the drawings, but the shape and position of each component are not limited by the above terms. For example, the front side can be defined as the +X side, and the rear side can be defined as the -X side. For example, based on the drawings, the right side can be defined as the +Y side, and the left side can be defined as the -Y side. For example, based on the drawings, the upper side can be defined as the +Z side, and the lower side can be defined as the -Z side. For example, referring to FIGS. 1 and 2, the direction in which the door (11) of the dishwasher (1) faces can be defined as the front (+X direction), and the opposite direction can be defined as the rear (-X direction).

[0058] Below, various exemplary embodiments of the present disclosure are described in more detail.

[0059] FIG. 1 is a perspective view of a dishwasher according to various embodiments. FIG. 2 is a side cross-sectional view of a dishwasher according to various embodiments.

[0060] Referring to FIGS. 1 and 2, the dishwasher (1) may include a main body (10). The main body (10) may form the exterior of the dishwasher (1).

[0061] The dishwasher (1) may include a tub (12) provided inside the main body (10). The tub (12) may form a washing room (10a). The tub (12) may be provided in an approximately box shape. One side of the tub (12) may be open. That is, the tub (12) may include an opening (12a). As an example, the front side of the tub (12) may be open.

[0062] A dishwasher (1) may include a washing room (10a) formed by a tub (12). The washing room (10a) may be defined as an inner space of the tub (12). The washing room (10a) may refer to a space where objects to be washed placed inside the tub (12) can be washed and dried.

[0063] The dishwasher (1) may include a machine room (10b) provided below the tub (12). At least a portion of a sump (70), which will be described in more detail below, may be placed in the machine room (10b). The dishwasher (1) may include a base frame (16) forming the machine room (10b).

[0064] A dishwasher (1) may include a door (11). The door (11) may be provided to open and close a tub (12). The door (11) may be provided to open and close an opening (12a) of the tub (12). The door (11) may be provided to open and close a washing chamber (10a). The door (11) may be installed on the main body (10) to open and close the tub (12). The door (11) may be rotatably mounted on the main body (10). The door (11) may be detachably mounted on the main body (10).

[0065] The dishwasher (1) may include a storage container (50). The storage container (50) may be provided inside the tub (12). The storage container (50) may accommodate dishes. The storage container (50) may accommodate dishes. The storage container (50) may be capable of loading dishes. The storage container (50) may be capable of holding dishes. However, the present disclosure is not limited thereto, and the storage container (50) may be provided to accommodate not only dishes but also various washable items within the washing room (10a). For example, the storage container (50) may accommodate various washable items.

[0066] The storage container (50) may include at least one basket for storing dishes. The storage container (50) may include at least one rack assembly for storing dishes. As described above, the basket and / or rack assembly may store not only dishes but also various washable items within the washing room (10a). The basket and the rack assembly are interchangeable. It should be noted that the basket described below may also be referred to as a rack assembly.

[0067] For example, the storage container (50) may include a plurality of baskets (51, 52, 53). The plurality of baskets (51, 52, 53) may be provided to store various tableware. However, the present invention is not limited thereto. For example, the storage container (50) may include only some of the plurality of baskets (51, 52, 53). For example, the storage container (50) may further include additional baskets other than the plurality of baskets (51, 52, 53). For example, the storage container (50) may include a single basket.

[0068] The storage container (50) may include an intermediate basket (52) positioned in the middle in the height direction of the dishwasher (1). The intermediate basket (52) may be designed to be withdrawn from the tub (12) or introduced into the tub (12). For example, the intermediate basket (52) may be designed to be supported on an intermediate guide rack (13b). For example, the intermediate guide rack (13b) may be installed on a side (12c) of the tub (12) so as to be slidable toward an opening (12a) of the tub (12).

[0069] The storage container (50) may include a lower basket (51) positioned at the bottom in the height direction of the dishwasher (1). The lower basket (51) may be provided to be withdrawn from the tub (12) or introduced into the tub (12). For example, the lower basket (51) may be provided to be supported on a lower guide rack (13a). For example, the lower guide rack (13a) may be installed on a side surface (12c) of the tub (12) so as to be slidable toward an opening (12a) of the tub (12).

[0070] Relatively large dishes can be stored in the plurality of baskets (51, 52). However, the types of dishes stored in the plurality of baskets (51, 52) are not limited to relatively large dishes. That is, not only relatively large dishes but also relatively small dishes can be stored in the plurality of baskets (51, 52).

[0071] The storage container (50) may include an upper basket (53) positioned at the top in the height direction of the dishwasher (1). The upper basket (53) is formed in the form of a rack assembly so that relatively small dishes can be stored therein. For example, cooking tools or cutlery such as ladles, knives, and spatulas can be stored in the upper basket (53). For example, small cups such as espresso cups can be stored in the upper basket (53). However, the types of dishes stored in the upper basket (53) are not limited to the above examples.

[0072] The upper basket (53) may be designed to be pulled out from the tub (12) or introduced into the tub (12). For example, the upper basket (53) may be slidably moved by the upper guide rack (13c). For example, the upper basket (53) may be designed to be supported by the upper guide rack (13c). For example, the upper guide rack (13c) may be installed on the side (12c) of the tub (12).

[0073] The dishwasher (1) may include a spray device (40) configured to spray water. The spray device (40) may spray water into the inside of the tub (12). The spray device (40) may spray water into the washing chamber (10a). The spray device (40) may spray water toward objects to be washed placed inside the tub (12). The spray device (40) may spray water toward dishes stored in a storage container (50). The spray device (40) may receive water from a sump (70) described in more detail below and / or a duct (20) described in more detail below.

[0074] In the present disclosure, water may mean both water mixed with detergent (and / or rinse) and water not mixed with detergent (and / or rinse).

[0075] The injection device (40) may include at least one injection unit. The injection device (40) may include one injection unit or may include a plurality of injection units (41, 42, 43).

[0076] For example, the spray device (40) may include a first spray unit (41) disposed at the bottom of the lower basket (51) in the height direction of the dishwasher (1). For example, the first spray unit (41) is connected to a sump (70), and water inside the sump (70) may be directly supplied to the first spray unit (41). For example, the spray device (40) may include a second spray unit (42) disposed at the bottom of the middle basket (52) in the height direction of the dishwasher (1). For example, the second spray unit (42) is connected to a duct (20), and water inside the sump (70) may be supplied to the second spray unit (42) through the duct (20). For example, the spray device (40) may include a third spray unit (43) disposed at the top of the upper basket (53) in the height direction of the dishwasher (1). For example, the third injection unit (43) is connected to the duct (20), and water inside the sump (70) can be supplied to the third injection unit (43) through the duct (20).

[0077] However, the number of injection units is not limited to the above-described examples. The injection device (40) may include two or fewer injection units. The injection device (40) may include four or more injection units.

[0078] Each of the plurality of spray units (41, 42, 43) may be arranged to spray water while rotating. Each of the first spray unit (41), the second spray unit (42), and the third spray unit (43) may be arranged to spray water while rotating. The plurality of spray units (41, 42, 43) may be referred to as a plurality of spray rotors (41, 42, 43). Each of the first spray unit (41), the second spray unit (42), and the third spray unit (43) may be referred to as a first spray rotor (41), a second spray rotor (42), and a third spray rotor (43).

[0079] However, the spray device (40) may spray water in a manner different from the above-described example. For example, the first spray unit (41), unlike the second spray unit (42) and the third spray unit (43), may be fixed to the lower surface (12b) of the tub (12). At this time, the first spray unit (41) is arranged to spray water in a substantially horizontal direction by a fixed nozzle, and the water sprayed in a substantially horizontal direction from the nozzle of the first spray unit (41) may have its direction changed by a switching assembly (not shown) arranged inside the washing chamber (10a) and may move upward. The switching assembly may be installed on a rail (not shown) and may be arranged to be translationally movable along the rail. Although the first spray unit (41) has been described above as an example, the second spray unit (42) and the third spray unit (43) may also be arranged to spray water using a fixed nozzle, similar to the above-described example.

[0080] The dishwasher (1) may include a sump (70). The sump (70) may be provided to receive water. The sump (70) may be provided to store water inside the tub (12). The sump (70) may collect water in the washing room (10a). For example, in order to smoothly collect water in the sump (70), the lower surface (12b) of the tub (12) may be provided to slope downward toward the sump (70). The water inside the tub (12) may flow along the slope of the lower surface (12b) of the tub (12) and smoothly flow into the sump (70).

[0081] The sump (70) may be arranged to distribute water stored in the sump (70) to the spray device (40). The sump (70) may selectively provide water within the sump (70) to the spray device (40). The sump (70) may supply the stored water to at least one of a plurality of spray units (41, 42, 43). However, the present disclosure is not limited to the above, and the sump (70) may not distribute water to the spray device (40). For example, the dishwasher (1) may further include a distribution device separate from the sump (70). However, for the convenience of explanation, an example in which the sump (70) stores water and distributes the stored water to the spray device (40) will be described below.

[0082] The dishwasher (1) may include a duct (20). The duct (20) may be arranged inside the tub (12). The duct (20) may be arranged in the washing room (10a). The duct (20) may guide water inside the tub (12). The duct (20) may transfer water supplied from the sump (70) to the spray device (40). For example, the duct (20) may transfer water flowing out of the sump (70) to the second spray unit (42) and the third spray unit (43).

[0083] The dishwasher (1) may include a filter assembly (30). The filter assembly (30) may be configured to filter water flowing into a sump (70). Water filtered through the filter assembly (30) may be pumped by a circulation pump (61) and provided to a duct (20) and / or a spray device (40). The filter assembly (30) may be detachably mounted to the sump (70). For example, the filter assembly (30) may include at least one filter (310, 320, and / or 330). The filter assembly (30) will be described in more detail below.

[0084] The dishwasher (1) may include at least one pump (60). The at least one pump (60) may move water stored in a sump (70). The at least one pump (60) may circulate or drain the water stored in the sump (70). For example, the dishwasher (1) may include at least one of a circulation pump (61) or a drain pump (62).

[0085] FIG. 3 is a perspective view illustrating a lower portion of a dishwasher according to various embodiments. FIG. 4 is a perspective view illustrating a sump assembly of a dishwasher according to various embodiments. FIG. 5 is an exploded perspective view illustrating a state in which a distribution cover and a distribution disk are disassembled in the sump assembly of the dishwasher illustrated in FIG. 4 according to various embodiments. FIG. 6 is an exploded perspective view illustrating a state in which a filter assembly is disassembled in the sump assembly of the dishwasher illustrated in FIG. 4 according to various embodiments. FIG. 7 is a side cross-sectional view of the sump assembly of the dishwasher illustrated in FIG. 4 according to various embodiments.

[0086] The dishwasher (1) may include a sump (70) and components coupled to the sump (70) that can move water stored in the sump (70) or that can fix / support the sump (70). The sump (70) and components coupled to the sump (70) may be referred to as a sump assembly.

[0087] The sump (70) may include a sump housing (71). The sump housing (71) may be detachably coupled to the lower surface (12b) of the tub (12). Most of the sump housing (71) may be placed in the machine room (10b).

[0088] The sump housing (71) may include a water storage chamber (711). The water storage chamber (711) may be configured to store water. The water storage chamber (711) may be disposed below the tub (12). The water storage chamber (711) may be configured to store water within the tub (12). Water flowing along the lower surface (12b) of the tub (12) may flow into the water storage chamber (711). Alternatively, the water storage chamber (711) may be configured to store water introduced from an external water source through a water supply unit (715). The water storage chamber (711) may include a shape for containing water. The water storage chamber (711) may include a shape with an open upper portion. The water storage chamber (711) may include a shape that is concave downward.

[0089] The sump housing (71) may include a distribution chamber (712). The distribution chamber (712) may be partitioned from a reservoir chamber (711). The distribution chamber (712) may be configured to receive water. The distribution chamber (712) may receive water pumped by a circulation pump (61). The distribution chamber (712) may receive water to be provided to the spray device (40). The water received in the distribution chamber (712) may be provided to the spray device (40) through a distribution cover (73), which will be described in more detail below. The distribution chamber (712) may include a flow path (712f) configured to guide water pumped by the circulation pump (61) to the spray device (40). Hereinafter, the flow path (712f) may also be referred to as a third flow path (712f) to distinguish it from the first flow path (991) and the second flow path (992), which will be described in more detail below. Additionally, the first euro (991), second euro (992) and third euro (712f) do not have ordinal numbers of “first”, “second” and “third” as described above limiting their composition.

[0090] The sump housing (71) may include a chamber inlet (7121). The chamber inlet (7121) may be in communication with the distribution chamber (712). The chamber inlet (7121) may extend from the distribution chamber (712), and water pumped by the circulation pump (61) may flow into the distribution chamber (712) through the chamber inlet (7121). The chamber inlet (7121) may guide the water pumped by the circulation pump (61) to the distribution chamber (712). For example, the water pumped by the circulation pump (61) may be supplied to the distribution chamber (712) through the connector (91) and the chamber inlet (7121), which will be described in more detail below. The flow path (or space) formed inside the chamber inlet (7121) may be defined as a configuration included in the distribution chamber (712). For example, the flow path (712f) may include a flow path extending from the chamber inlet (7121) to a chamber outlet (731, 732 and / or 733), which will be described in more detail below.

[0091] In the drawing, the reservoir chamber (711) and the distribution chamber (712) are shown as being formed integrally as components of the sump housing (71). However, the present disclosure is not limited to what is shown. The reservoir chamber (711) and the distribution chamber (712) may also be provided as separate components.

[0092] The sump housing (71) may include a circulation pump coupling (713) to which a circulation pump (61) is coupled. The circulation pump coupling (713) may be in communication with a water storage chamber (711). Water within the water storage chamber (711) may flow toward the circulation pump (61) through the circulation pump coupling (713).

[0093] The sump housing (71) may include a drain pump coupling (714) to which a drain pump (62) is connected. The drain pump coupling (714) may be in communication with a water storage chamber (711). Water and foreign substances within the water storage chamber (711) may flow toward the drain pump (62) through the drain pump coupling (714).

[0094] The sump housing (71) may include a water supply unit (715). The water supply unit (715) may supply water supplied from an external water source (not shown) to the water storage chamber (711). The water supply unit (715) may be in communication with the water storage chamber (711). A water supply valve (715a, see FIG. 24) may be provided in at least one passage connecting the external water source and the water storage chamber (711).

[0095] The sump (70) may include a distribution valve (72). The distribution valve (72) may be configured to open or close the flow path (712f) of the distribution chamber (712). While the distribution valve (72) opens the flow path (712f) of the distribution chamber (712), water pumped by the circulation pump (61) may flow into the distribution chamber (712). While the distribution valve (72) closes the flow path (712f) of the distribution chamber (712), water pumped by the circulation pump (61) may not flow into the distribution chamber (712).

[0096] Opening the flow path (712f) may mean not only completely opening the flow path (712f), but also opening at least a portion of the flow path (712f) to allow water to flow through the flow path (712f). Closing the flow path (712f) may mean not only completely closing the flow path (712f), but also covering at least a portion of the flow path (712f), thereby preventing water from flowing through the flow path (712f) or reducing the flow rate of water flowing through the flow path (712f).

[0097] For example, the distribution valve (72) may include a distribution motor (721), a distribution shaft (722), and a distribution disc (723). The distribution motor (721) may generate a rotational force. The distribution shaft (722) may connect the distribution motor (721) and the distribution disc (723). A first end of the distribution shaft (722) may be coupled to the motor shaft of the distribution motor (721). A second end of the distribution shaft (722) may be coupled to the distribution disc (722). The distribution shaft (722) may transmit the rotational force generated in the distribution motor (721) to the distribution disc (723). However, the distribution motor (721) and the distribution disc (723) may be directly connected without the distribution shaft (722). The distribution disc (723) may be arranged to rotate by the rotational force generated in the distribution motor (721). The distribution disc (723) can be placed inside the distribution chamber (712). The distribution disc (723) can open or close the flow path (712f) while rotating inside the distribution chamber (712).

[0098] For example, the distribution disc (723) may include a communication hole (7231). If the communication hole (7231) of the distribution disc (723) is arranged to correspond to the flow path (712f), the flow path (712f) may be opened. At this time, water pumped by the circulation pump (61) may flow toward the distribution chamber (712). If the communication hole (7231) of the distribution disc (723) is arranged not to correspond to the flow path (712f), the flow path (712f) may be closed. At this time, water pumped by the circulation pump (61) may not flow toward the distribution chamber (712).

[0099] However, the present disclosure is not limited to the above-described examples, and the distribution valve (72) may include various known types of valves. The type and shape of the distribution valve (72) are not limited as long as it can open or close the flow path (712f) of the distribution chamber (712).

[0100] The sump (70) may include a distribution cover (73). The distribution cover (73) may be provided to cover at least a portion of the sump housing (71). The distribution cover (73) may be provided to cover the distribution chamber (712). The distribution cover (73) may be detachably coupled to the sump housing (71). For example, the distribution cover (73) may be rotatably coupled to the sump housing (71).

[0101] The distribution cover (73) may include at least one chamber outlet (731, 732 and / or 733). Water within the distribution chamber (712) may be discharged through the at least one chamber outlet (731, 732 and / or 733). While the distribution cover (73) is coupled to the sump housing (71), the at least one chamber outlet (731, 732 and / or 733) may be in communication with the distribution chamber (712). While the distribution cover (73) is coupled to the sump housing (71), the at least one chamber outlet (731, 732 and / or 733) may be connected to the spray device (40) to supply water within the distribution chamber (712) to the spray device (40). The chamber outlet (731, 732 and / or 733) may be referred to as an outlet (731, 732 and / or 733).

[0102] For example, the distribution cover (73) may include a plurality of chamber outlets (731, 732, 733) corresponding to a plurality of spray units (41, 42, 43), respectively. For example, the distribution cover (73) may include a first chamber outlet (731) connected to a first spray unit (41), a second chamber outlet (732) connected to a second spray unit (42), and a third chamber outlet (733) connected to a third spray unit (43). The first chamber outlet (731) may be directly connected to the first spray unit (41). The second chamber outlet (732) may be connected to the second spray unit (42) via a duct (20, see FIG. 2). The third chamber outlet (733) may be connected to the third spray unit (43) via a duct (20, see FIG. 2). The water in the distribution chamber (712) can flow out through the first chamber outlet (731) and into the first spray unit (41). The water in the distribution chamber (712) can flow out through the second chamber outlet (732) and into the duct (20), and the water flowing into the duct (20) can flow into the second spray unit (42). The water in the distribution chamber (712) can flow out through the third chamber outlet (733) and into the duct (20), and the water flowing into the duct (20) can flow into the third spray unit (43). However, the present disclosure is not limited to the above-described example. For example, at least some of the plurality of chamber outlets (731, 732, 733) can be formed integrally, and the water flowing out through the integrally formed configuration can be branched during the flow.

[0103] In the drawing, the distribution cover (73) is depicted as being a separate component from the sump housing (71). However, the present disclosure is not limited to the drawing. Unlike the drawing, the distribution cover (73) and the sump housing (71) may be formed as a single unit. The distribution cover (73) may be provided as a single component of the sump housing (71).

[0104] The dishwasher (1) may include a filter assembly (30). The filter assembly (30) may include at least one filter (310, 320 and / or 330) for filtering water.

[0105] The filter assembly (30) may include a first filter (310). The first filter (310) may be disposed within the water storage chamber (711). The first filter (310) may be detachable from the water storage chamber (711). The first filter (310) is detachably mountable to the sump housing (71).

[0106] The first filter (310) may be provided to filter water flowing into the water storage chamber (711). The first filter (310) may be provided to filter water flowing within the water storage chamber (711). The first filter (310) may be provided to filter water passing through the second filter (320) and / or the third filter (330), which will be described in more detail below. For example, the first filter (310) may be provided to filter out foreign substances having a relatively smaller size than the second filter (320) and the third filter (330). For example, the first filter (310) may be provided to filter out foreign substances having a smaller size than foreign substances filtered out by the second filter (320) and the third filter (330). For example, the first filter (310) may include a microfilter. However, the present disclosure is not limited to the above-described example, and it is sufficient for the first filter (310) to be able to filter out foreign substances contained in water, and there is no limitation on the size of foreign substances filtered by the first filter (310).

[0107] Water flowing into the water storage chamber (711) can flow from the inside of the first filter (310) to the outside of the first filter (310). As the water passes through the first filter (310), foreign substances contained in the water can be captured by the first filter (310). The foreign substances contained in the water can be captured on the inner surface of the first filter (310). The foreign substances contained in the water can attach to the inner surface of the first filter (310). The foreign substances filtered by the first filter (310) can accumulate on the inner surface of the first filter (310). The water passing through the first filter (310) can be water from which foreign substances have been removed. The water passing through the first filter (310) can be sprayed to the tub (12) or circulated to the water storage chamber (711).

[0108] For example, the first filter (310) may include a roughly hollow cylindrical shape. For example, the first filter (310) may be arranged to surround the second filter (320). For example, the first filter (310) may be arranged to cover at least a portion of the outer surface of the second filter (320).

[0109] The first filter (310) may be arranged to be rotatable within the water storage chamber (711). The first filter (310) may be rotatable during a filter cleaning operation (filter cleaning mode). This will be described in more detail below.

[0110] The filter assembly (30) may include a second filter (320). At least a portion of the second filter (320) may be disposed within the reservoir chamber (711). At least a portion of the second filter (320) may be surrounded by the first filter (310). While at least a portion of the second filter (320) is disposed within the reservoir chamber (711), another portion of the second filter (320) may be disposed within the tub (12). The second filter (320) is removably mountable to the sump housing (71).

[0111] The second filter (320) may be provided to filter foreign substances contained in water flowing from the tub (12) to the sump (70). The second filter (320) may be provided to filter foreign substances having a relatively larger size than the first filter (310). For example, the second filter (320) may be provided to filter foreign substances having a larger size than the foreign substances filtered by the first filter (310). For example, the second filter (320) may include a coarse filter. However, the present disclosure is not limited to the above-described example, and the second filter (320) is sufficient as long as it can filter foreign substances contained in water, and there is no limitation on the size of the foreign substances filtered by the second filter (320).

[0112] The filter assembly (30) may include a third filter (330). The third filter (330) is detachably mountable to the tub (12). For example, the third filter (330) may be placed on the lower surface (12b) of the tub (12). For example, the third filter (330) may have a generally plate shape.

[0113] The third filter (330) may be provided to filter foreign substances contained in water flowing from the tub (12) to the sump (70). The third filter (330) may be provided to filter foreign substances having a relatively larger size than the first filter (310). The third filter (330) may be provided to filter foreign substances having a relatively smaller size than the second filter (320). For example, the third filter (330) may be provided to filter foreign substances having a larger size than the foreign substances filtered by the first filter (310). For example, the third filter (330) may be provided to filter foreign substances having a smaller size than the foreign substances filtered by the second filter (320). For example, the third filter (330) may include a fine filter. However, the present disclosure is not limited to the above-described example, and it is sufficient for the third filter (330) to be able to filter out foreign substances contained in water, and there is no limitation on the size of foreign substances filtered by the third filter (330).

[0114] As described above, the first filter (310), the second filter (320), and the third filter (330) are not limited by the ordinal numbers "first," "second," and "third." For example, the first filter (310), the second filter (320), and the third filter (330) may be referred to as filter (310), filter (320), and filter (330), respectively.

[0115] The filter assembly (30) may include a filter cover (340). The filter cover (340) may be provided to cover a portion of at least one filter (310, 320, and / or 330). This may prevent or block relatively large-sized foreign matter lumps from flowing into the storage chamber (711). The filter cover (340) may be detachably mounted on the inside of the second filter (320). The filter cover (340) may be provided to cover a portion of the inside of the second filter (320).

[0116] The filter assembly (30) may include a filter motor (350). The filter motor (350) may be configured to rotate the first filter (310). The filter motor (350) may generate a rotational force for rotating the first filter (310). The filter motor (350) may include a motor shaft (351). The motor shaft (351) may be substantially identical to the rotational axis of the first filter (310).

[0117] The filter assembly (30) may include a motor cover (360). The motor cover (360) may be configured to cover the filter motor (350) to prevent and / or reduce water from penetrating into the filter motor (350). For example, the motor cover (360) may have a slope, and water may flow along the slope of the motor cover (360) and not enter the filter motor (350).

[0118] The filter assembly (30) may include a connecting shaft (370). The connecting shaft (370) may transmit the rotational force generated from the filter motor (350) to the first filter (310). The connecting shaft (370) may be arranged to rotate together with the filter motor (350). One end of the connecting shaft (370) may be coupled to a motor shaft (351) of the filter motor (350). The connecting shaft (370) may be arranged on the same line as the motor shaft (351). The connecting shaft (370) may form a rotational axis of the first filter (310). The connecting shaft (370) may be coupled to a rotating frame (380) which will be described in more detail below. The connecting shaft (370) may be inserted into a hollow portion (320a) of the second filter (320). At least a portion of the connecting shaft (370) may pass through a shaft hole (718) formed in the sump housing (71) and be coupled to the rotating frame (380) and the second filter (320). The connecting shaft (370) may have a shape extending approximately along the vertical direction (Z direction).

[0119] The filter assembly (30) may include a rotating frame (380). The rotating frame (380) may be provided to connect the first filter (310) to the connecting shaft (370). The rotating frame (380) may transmit the rotational force of the connecting shaft (370) to the first filter (310). The rotating frame (380) may be provided to be coupled to the connecting shaft (370) and rotate together with the connecting shaft (370). The first filter (310) may be coupled to the rotating frame (380) and rotate together with the rotating frame (380). The rotating frame (380) may be coupled to the lower end of the first filter (310).

[0120] The filter assembly (30) may include a shaft fixer (390). The shaft fixer (390) may be coupled to the other end of the connecting shaft (370). The shaft fixer (390) may prevent or suppress the connecting shaft (380) inserted into the hollow portion (320a) of the second filter (320) from being separated from the hollow portion (320a) of the second filter (320).

[0121] The filter assembly (30) may include an elastic member (3100). The elastic member (3100) may reduce friction between the first filter (310) and another component adjacent to the first filter (310). The elastic member (3100) may be coupled to the upper portion of the first filter (310).

[0122] The dishwasher (1) may include a sealing member (300). The sealing member (300) may prevent and / or reduce water leakage between the filter assembly (30) and the sump (70). For example, the sealing member (300) may be disposed between the connecting shaft (370) and the sump housing (71). For example, the sealing member (300) may have an approximately ring shape.

[0123] The dishwasher (1) may include a support plate (80). The support plate (80) may be provided to support at least a portion of the filter assembly (30). The support plate (80) may be provided to support one side of the third filter (330). The support plate (80) may be detachably mounted to the tub (12). The support plate (80) may be provided to cover at least a portion of the sump housing (71).

[0124] The support plate (80) may include a plate body (81). For example, the plate body (81) may include an approximately semicircular shape. For example, the plate body (81) may include a plurality of holes and may function as a type of filter.

[0125] The support plate (80) may include a plate opening (82). The plate opening (82) may be formed through the plate body (81). The plate opening (82) may be provided to correspond to the distribution chamber (712).

[0126] The support plate (80) may include a mounting portion (83). The mounting portion (83) may be provided to support one side of the third filter (330). The mounting portion (83) may be formed on the edge of the plate body (81). The mounting portion (83) may be formed to be stepped from the plate body (81). The mounting portion (83) may include a shape that is recessed from the upper surface of the plate body (81).

[0127] The dishwasher (1) may include a circulation pump (61). The circulation pump (61) may be configured to pump water stored in a sump (70). The circulation pump (61) may be configured to pump water contained in a water storage chamber (711). The water pumped by the circulation pump (61) may flow to a distribution chamber (712) or may be circulated and flow to the water storage chamber (711). This will be described in more detail below. The circulation pump (61) may be arranged in a machine room (10b, see FIG. 2).

[0128] The circulation pump (61) may include a pump inlet (611) and a pump outlet (612). Water contained in the water storage chamber (711) may be introduced into the circulation pump (61) through the pump inlet (611). Water inside the circulation pump (61) may be introduced through the pump outlet (612). The pump inlet (611) may be referred to as the inlet (611). The pump outlet (612) may be referred to as the outlet (612).

[0129] The dishwasher (1) may include a drain pump (62). The drain pump (62) may drain water stored in a sump (70). The drain pump (62) may discharge water contained in a water storage chamber (711) to the outside. Water pumped by the drain pump (62) and foreign substances contained in the water (e.g., food waste, etc.) may be discharged to the outside. The drain pump (62) may be placed in a machine room (10b, see FIG. 2).

[0130] FIG. 8 is a perspective view illustrating some components of a dishwasher according to various embodiments. FIG. 9 is a perspective view illustrating some components of the dishwasher illustrated in FIG. 8 from a different direction according to various embodiments. FIG. 10 is a perspective view illustrating some components of the dishwasher illustrated in FIG. 8 from a different direction from FIG. 9 according to various embodiments. FIG. 11 is a bottom view illustrating some components of the dishwasher illustrated in FIG. 8 according to various embodiments. FIG. 12 is an exploded perspective view illustrating a state in which a circulation pump, a drain pump, and a flow path structure of some components of the dishwasher illustrated in FIG. 8 are disassembled according to various embodiments. FIG. 13 is an exploded perspective view illustrating a state in which a circulation pump, a drain pump, and a flow path structure of some components of the dishwasher illustrated in FIG. 8 are disassembled according to various embodiments. FIG. 14 is an exploded perspective view illustrating a state in which a circulation pump, a drain pump, and a flow path structure of some components of the dishwasher illustrated in FIG. 8 are disassembled according to various embodiments.

[0131] The dishwasher (1) may include a connector (91). The connector (91) may receive water pumped by the circulation pump (61). The connector (91) may receive water flowing out from the circulation pump (61). The connector (91) may be configured to guide water flowing out from the circulation pump (61) to a distribution chamber (712) or to a connecting pipe (92) described in more detail below.

[0132] The connector (91) may include a connector inlet (911). The inlet (911) of the connector (91) may be detachably coupled to a pump outlet (612) of a circulation pump (61). The connector inlet (911) of the connector (91) may be connected to a pump outlet (612) of the circulation pump (61). Water flowing out of the pump outlet (612) of the circulation pump (61) may flow to the connector inlet (911) of the connector (91). The connector inlet (911) may be referred to as an inlet (911).

[0133] The connector (91) may include a first connector outlet (912). The first connector outlet (912) of the connector (91) may be detachably coupled to the chamber inlet (7121) of the sump (70). The first connector outlet (912) may be connected to the chamber inlet (7121) of the sump (70). Water introduced into the connector inlet (911) may flow into the distribution chamber (712) through the first connector outlet (912). For example, the first connector outlet (912) may extend in a direction substantially intersecting the connector inlet (911). The first connector outlet (912) may be referred to as an outlet (912).

[0134] The connector (91) may include a second connector outlet (913). The second connector outlet (913) of the connector (91) may be detachably coupled to a connecting pipe (92), which will be described in more detail below. The second connector outlet (913) of the connector (91) may be connected to the connecting pipe (92). Water flowing into the connector inlet (911) may flow into the connecting pipe (92) through the second connector outlet (913). For example, the second connector outlet (913) may be branched between the connector inlet (911) and the first connector outlet (912). The second connector outlet (913) may be referred to as an outlet (913).

[0135] The dishwasher (1) may include a connecting pipe (92). The connecting pipe (92) may receive water flowing out from the connector (91). Water pumped by the circulation pump (61) through the connector (91) may pass through the connector (91) and flow into the connecting pipe (92). The connecting pipe (92) may connect the connector (91) to a first guide pipe (93), which will be described in more detail below. The connecting pipe (92) may guide water flowing out from the connector (91) to the first guide pipe (93). The connecting pipe (92) may connect the connector (91) to a second guide pipe (96), which will be described in more detail below. The connecting pipe (92) may guide water flowing out from the connector (91) to the second guide pipe (96).

[0136] For example, the connecting pipe (92) may include a first connecting portion (921), a second connecting portion (922), a third connecting portion (923), a fourth connecting portion (924), and a fifth connecting portion (925).

[0137] The first connector (921) can be detachably connected to the second connector outlet (913) of the connector (91). The first connector (921) can be connected to the second connector outlet (913) of the connector (91). The first connector (921) can receive water from the connector (91).

[0138] A first flow valve (94), which will be described in more detail below, can be detachably connected to the second connection portion (922). The second connection portion (922) can be in communication with the first connection portion (921). The second connection portion (922) can be in communication with the third connection portion (923).

[0139] The third connecting portion (923) may extend from the second connecting portion (922). The third connecting portion (923) may extend downward from the second connecting portion (922). The third connecting portion (923) may be connected to the first guide pipe (93).

[0140] Water flowing into the first connection (921) can flow through the second connection (922) and the third connection (923) into the first guide pipe (93).

[0141] A second flow valve (97), which will be described in more detail below, can be detachably connected to the fourth connection portion (924). The fourth connection portion (924) can be in communication with the first connection portion (921). The fourth connection portion (924) can be in communication with the fifth connection portion (925).

[0142] The fifth connecting portion (925) may extend from the fourth connecting portion (924). The fifth connecting portion (925) may extend downward from the fourth connecting portion (924). The fifth connecting portion (925) may be connected to the second guide pipe (96).

[0143] Water flowing into the first connection (921) can flow through the fourth connection (924) and the fifth connection (925) into the second guide pipe (96).

[0144] For example, the connecting pipe (92) may include a fixing member (926). The fixing member (926) may be fixed to the sump (70). The fixing member (926) may be fixed to the sump housing (71).

[0145] The dishwasher (1) may include a first guide pipe (93). The first guide pipe (93) may guide water pumped by the circulation pump (61) to a storage chamber (711). The first guide pipe (93) may supply the water pumped by the circulation pump (61) to a first cleaning nozzle (95), which will be described in more detail below. The first guide pipe (93) may be arranged to connect a connection pipe (92) and the first cleaning nozzle (95). For example, a first end (931) of the first guide pipe (93) may be detachably connected to a third connection portion (923) of the connection pipe (92). For example, a second end (932) of the first guide pipe (93) may be detachably connected to the first cleaning nozzle (95).

[0146] The dishwasher (1) may include a first flow valve (94). The first flow valve (94) may be configured to open or close a first flow path (991) for guiding water pumped by the circulation pump (61) to a water storage chamber (711). The first flow path (991) may include a flow path extending from the circulation pump (61) to the water storage chamber (711). The first flow path (991) may include a flow path extending from a pump outlet (612) of the circulation pump (61) to a first cleaning nozzle (95). For example, the first flow path (991) may include at least one of a flow path formed between a connector inlet (911) and a second connector outlet (913), a flow path formed between a first connection portion (921) and a second connection portion (922), a flow path formed between a second connection portion (922) and a third connection portion (923), or a flow path formed by a first guide pipe (93).

[0147] At least a portion of the first flow valve (94) may be disposed in the first flow path (991). In the drawing, the first flow valve (94) is depicted as being mounted on the second connection portion (922) of the connecting pipe (92), but the present disclosure is not limited thereto. It is sufficient for the first flow valve (94) to be disposed to open and close the first flow path (991) described above.

[0148] Opening the first flow path (991) may mean not only completely opening the first flow path (991), but also opening at least a portion of the first flow path (991) to allow water to flow through the first flow path (991). Closing the first flow path (991) may mean not only completely closing the first flow path (991), but also covering at least a portion of the first flow path (991), thereby preventing or blocking water from flowing through the first flow path (991) or reducing the flow rate of water flowing through the first flow path (991).

[0149] The dishwasher (1) may include a first cleaning nozzle (95). The first cleaning nozzle (95) may be provided to communicate with a water storage chamber (711). The first cleaning nozzle (95) may be provided to spray water guided through the first flow path (991) toward the first filter (310). For example, the first cleaning nozzle (95) may spray water relatively toward the lower portion of the first filter (310). For example, the water sprayed through the first cleaning nozzle (95) may have a water pressure above a certain level.

[0150] The first cleaning nozzle (95) may be configured to spray water toward the outer surface of the first filter (310). The outer surface of the first filter (310) is the surface opposite to the inner surface of the first filter (310) where foreign substances are collected. The water sprayed from the first cleaning nozzle (95) may flow from the outside of the first filter (310) to the inside of the first filter (310). As the water sprayed from the first cleaning nozzle (95) passes through the first filter (310), foreign substances attached to the first filter (310) may be separated from the first filter (310). For example, as the first cleaning nozzle (95) sprays water toward the side of the first filter (310) opposite to the side where foreign substances are collected, the foreign substances may be easily removed from the first filter (310). As a result, the cleaning efficiency of the first filter (310) may be increased.

[0151] The first cleaning nozzle (95) may include a first injection port (951). For example, the first injection port (951) may include a slit shape. For example, the injection port (951) may include a slit shape extending approximately along a vertical direction (Z direction). For example, the first injection port (951) may be referred to as a first slit (951).

[0152] The first cleaning nozzle (95) can be detachably coupled to the sump (70). The first cleaning nozzle (95) can be mounted on a first nozzle mounting portion (716) formed on the sump housing (71). For example, the first nozzle mounting portion (716) can include a first sump opening (7161) open toward the water storage chamber (711) and a first coupling portion (7162) provided around the first sump opening (7161). For example, the first cleaning nozzle (95) can include a shape corresponding to the first sump opening (7161). For example, the first cleaning nozzle (95) can include a second coupling portion (952) that can be coupled to the first coupling portion (7162). For example, the first coupling portion (7162) and the second coupling portion (952) each include a coupling hole, and a screw can be fastened to the coupling hole of the first coupling portion (7162) and the coupling hole of the second coupling portion (952). However, the present disclosure is not limited to the above-described example, and the first cleaning nozzle (95) can be coupled to the sump (70) using various known coupling methods.

[0153] While the first cleaning nozzle (95) is coupled to the sump (70), the surface of the first cleaning nozzle (95) facing the water storage chamber (711) may be arranged to be connected to the inner surface of the sump housing (71). The surface of the first cleaning nozzle (95) facing the water storage chamber (711) may not protrude or be sunken from the inner surface of the sump housing (71) within a predetermined error range.

[0154] The dishwasher (1) may include a second guide pipe (96). The second guide pipe (96) may be separated from the first guide pipe (93). The second guide pipe (96) may guide water pumped by the circulation pump (61) to a storage chamber (711). The second guide pipe (96) may supply water pumped by the circulation pump (61) to a second cleaning nozzle (98), which will be described in more detail below. The second guide pipe (96) may be provided to connect a connection pipe (92) and a second cleaning nozzle (98). For example, a first end (961) of the second guide pipe (96) may be detachably connected to a fifth connection portion (925) of the connection pipe (92). For example, a second end (962) of the second guide pipe (96) may be detachably connected to a second cleaning nozzle (98).

[0155] The dishwasher (1) may include a second flow valve (97). The second flow valve (97) may be configured to open or close a second flow path (992) for guiding water pumped by the circulation pump (61) to a water storage chamber (711). The second flow path (992) may be distinct from the first flow path (991). The second flow path (992) may include a flow path extending from the circulation pump (61) to the water storage chamber (711). The second flow path (992) may include a flow path extending from a pump outlet (612) of the circulation pump (61) to a second cleaning nozzle (98). For example, the second flow path (992) may include at least one of a flow path formed between the connector inlet (911) and the second connector outlet (913), a flow path formed between the first connection part (921) and the fourth connection part (924), a flow path formed between the fourth connection part (924) and the fifth connection part (925), or a flow path formed by the second guide pipe (96).

[0156] At least a portion of the second flow valve (97) may be disposed in the second flow path (992). In the drawing, the second flow valve (97) is depicted as being mounted in the fourth connection portion (924) of the connecting pipe (92), but the present disclosure is not limited thereto. It is sufficient for the second flow valve (97) to be disposed to open and close the second flow path (992) described above.

[0157] Opening the second flow path (992) may mean not only completely opening the second flow path (992), but also opening at least a portion of the second flow path (992) to allow water to flow through the second flow path (992). Closing the second flow path (992) may mean not only completely closing the second flow path (992), but also covering at least a portion of the second flow path (992), thereby preventing or blocking water from flowing through the second flow path (992) or reducing the flow rate of water flowing through the second flow path (992).

[0158] The dishwasher (1) may include a second cleaning nozzle (98). The second cleaning nozzle (98) may be provided to communicate with the water storage chamber (711). The second cleaning nozzle (98) may be provided to spray water guided through the second flow path (992) toward the first filter (310). For example, the second cleaning nozzle (98) may spray water relatively toward the upper portion of the first filter (310). For example, the water sprayed through the second cleaning nozzle (98) may have a water pressure above a certain level.

[0159] The second cleaning nozzle (98) may be configured to spray water toward the outer surface of the first filter (310). The water sprayed from the second cleaning nozzle (98) may flow from the outside of the first filter (310) to the inside of the first filter (310). As the water sprayed from the second cleaning nozzle (98) passes through the first filter (310), foreign substances attached to the first filter (310) may be separated from the first filter (310). That is, as the second cleaning nozzle (98) sprays water toward the side of the first filter (310) opposite to the side where foreign substances are collected, the foreign substances may be easily removed from the first filter (310). As a result, the cleaning efficiency of the first filter (310) may be increased.

[0160] The second cleaning nozzle (98) may include a second injection port (981). For example, the second injection port (981) may include a slit shape. For example, the injection port (951) may include a slit shape extending approximately along a vertical direction (Z direction). For example, the second injection port (981) may be referred to as a second slit (981).

[0161] The second cleaning nozzle (98) can be detachably coupled to the sump (70). The second cleaning nozzle (98) can be mounted on a second nozzle mounting portion (717) formed on the sump housing (71). For example, the second nozzle mounting portion (717) can include a second sump opening (7171) open toward the water storage chamber (711) and a third coupling portion (7172) provided around the second sump opening (7171). For example, the second cleaning nozzle (98) can include a shape corresponding to the second sump opening (7171). For example, the second cleaning nozzle (98) can include a fourth coupling portion (982) that can be coupled to the third coupling portion (7172). For example, the third coupling portion (7172) and the fourth coupling portion (982) each include a coupling hole, and a screw may be fastened to the coupling hole of the third coupling portion (7172) and the coupling hole of the fourth coupling portion (982). However, the present disclosure is not limited to the above-described example, and the second cleaning nozzle (98) may be coupled to the sump (70) using various known coupling methods.

[0162] While the second cleaning nozzle (98) is coupled to the sump (70), the surface of the second cleaning nozzle (98) facing the water storage chamber (711) may be arranged to be connected to the inner surface of the sump housing (71). The surface of the second cleaning nozzle (98) facing the water storage chamber (711) may not protrude or be sunken from the inner surface of the sump housing (71) within a predetermined error range.

[0163] In the drawing, the connector (91), the connecting pipe (92), the first guide pipe (93), and the second guide pipe (96) are illustrated as separate components, but the present disclosure is not limited thereto. For example, at least some of the connector (91), the connecting pipe (92), the first guide pipe (93), and the second guide pipe (96) may be formed integrally. For example, a portion of the connecting pipe (92) and the first guide pipe (93) may be formed integrally. For example, a portion of the connecting pipe (92) and the second guide pipe (96) may be formed integrally. For example, the connecting pipe (92), the first guide pipe (93), and the second guide pipe (96) may be formed integrally. For example, the connector (91), the connecting pipe (92), the first guide pipe (93), and the second guide pipe (96) may be formed integrally and provided as a single component. It is clear that the present disclosure may include various combinations of connectors, hoses, pipes, etc., provided that at least one conduit connecting the circulation pump (61) to the reservoir chamber (711) can be formed.

[0164] Fig. 15 is a perspective view illustrating a filter cleaning structure of a dishwasher according to various embodiments. Fig. 16 is a perspective view illustrating the filter cleaning structure of the dishwasher illustrated in Fig. 15 from another direction according to various embodiments.

[0165] Referring to FIGS. 15 and 16, the first cleaning nozzle (95) and the second cleaning nozzle (98) may be spaced apart from each other. For example, the first cleaning nozzle (95) and the second cleaning nozzle (98) may be arranged to be spaced apart along the circumferential direction of the first filter (310). The first cleaning nozzle (95) and the second cleaning nozzle (98) may be arranged so as not to interfere with each other.

[0166] The first cleaning nozzle (95) may be provided to spray water toward a first area of ​​the first filter (310). The second cleaning nozzle (98) may be provided to spray water toward a second area of ​​the first filter (310) that is different from the first area of ​​the first filter (310).

[0167] For example, the first cleaning nozzle (95) may be arranged to clean the lower portion of the first filter (310), and the second cleaning nozzle (98) may be arranged to clean the upper portion of the first filter (310). For example, the second injection port (981) of the second cleaning nozzle (98) may be arranged above at least a portion of the first injection port (951) of the first cleaning nozzle (95). For example, the lower portion of the second injection port (981) may be arranged above the lower portion of the first injection port (951). For example, the upper portion of the second injection port (981) may be arranged above the upper portion of the first injection port (951). For example, the lower end of the second nozzle (981) may be positioned lower than the upper end of the first nozzle (951), higher than the upper end of the first nozzle (951), or at approximately the same height as the upper end of the first nozzle (951). However, this is merely exemplary, and it is clear that each of the first cleaning nozzle (95) and the second cleaning nozzle (98) can spray water in various directions to clean the first filter (310).

[0168] For example, the first injection port (951) of the first cleaning nozzle (95) and the second injection port (981) of the second cleaning nozzle (98) may be arranged to face approximately the center of the first filter (310), respectively. For example, the first injection port (951) of the first cleaning nozzle (95) and the second injection port (981) of the second cleaning nozzle (98) may be arranged to face the rotational axis of the first filter (310).

[0169] For example, the first injection port (951) of the first cleaning nozzle (95) may include a shape extending approximately in a vertical direction (Z direction). For example, the second injection port (981) of the second cleaning nozzle (98) may include a shape extending approximately in a vertical direction (Z direction). However, the present disclosure is not limited to the examples described above. For example, the first injection port (951) may include a shape extending approximately along the circumferential direction of the first filter (310). For example, the second injection port (981) may include a shape extending approximately along the circumferential direction of the first filter (310). For example, the extension length of the first injection port (951) and the extension length of the second injection port (981) may be the same or different. For example, at least one of the first injection port (951) or the second injection port (981) may include various shapes such as a straight line, a curved line, a circle, or a polygon.

[0170] For example, the first cleaning nozzle (95) may include one first injection port (951) or may include a plurality of first injection ports (951). For example, the plurality of first injection ports (951) may be configured with a plurality of holes. When the first cleaning nozzle (95) includes a plurality of first injection ports (951), the shapes of each of the plurality of first injection ports (951) may be configured to be the same or different. When the first cleaning nozzle (955) includes a plurality of first injection ports (951), the shapes of some of the plurality of first injection ports (951) may be configured to be different from the shapes of other some of the first injection ports (951).

[0171] For example, the second cleaning nozzle (98) may include one second injection port (981) or may include a plurality of second injection ports (981). For example, the plurality of second injection ports (981) may be configured with a plurality of holes. When the second cleaning nozzle (98) includes a plurality of second injection ports (981), the shapes of each of the plurality of second injection ports (981) may be configured to be the same or different. When the second cleaning nozzle (98) includes a plurality of second injection ports (981), the shapes of some of the plurality of second injection ports (981) may be configured to be different from the shapes of other some.

[0172] In the drawing, an example is shown in which the dishwasher (1) includes a first cleaning nozzle (95) and a second cleaning nozzle (98), but the present disclosure is not limited thereto. The dishwasher (1) may include one cleaning nozzle or may include three or more cleaning nozzles.

[0173] For example, the dishwasher (1) may include only one of the first cleaning nozzle (95) and the second cleaning nozzle (98). If the dishwasher (1) includes only the first cleaning nozzle (95), the second cleaning nozzle (98) and its related components (e.g., the second guide pipe (96), the second flow valve (97), the second flow path (992)) may be omitted. If the dishwasher (1) includes only the second cleaning nozzle (98), the first cleaning nozzle (95) and its related components (e.g., the first guide pipe (93), the first flow valve (94), the first flow path (991)) may be omitted.

[0174] For example, the dishwasher (1) may further include at least one additional cleaning nozzle (not shown) in addition to the first cleaning nozzle (95) and the second cleaning nozzle (98). For example, the dishwasher (1) may further include an additional flow path for guiding water pumped by the circulation pump (61) to the additional cleaning nozzle and an additional flow path valve for opening or covering the additional flow path. The additional flow path may be partitioned from the first flow path (991) and the second flow path (992), or may branch from at least one of the first flow path (991) or the second flow path (992). For example, the additional cleaning nozzle may be positioned so as not to interfere with the first cleaning nozzle (95) and the second cleaning nozzle (98). For example, the additional cleaning nozzle may spray water toward the upper, lower, or middle region of the first filter (310), as needed. For example, the first cleaning nozzle (95) and the additional cleaning nozzle may spray water toward the lower portion of the first filter (310), and the second cleaning nozzle (98) may spray water toward the upper portion of the first filter (310). For example, the first cleaning nozzle (95) may spray water toward the lower portion of the first filter (310), and the second cleaning nozzle (98) and the additional cleaning nozzle may spray water toward the upper portion of the first filter (310).

[0175] FIG. 17 is a drawing illustrating how water flows into a circulation pump according to various embodiments.

[0176] Referring to FIG. 17, water in the tub (12) can flow into the storage chamber (711) of the sump (70). The water can pass through at least one filter (310, 320 and / or 330) while flowing into the storage chamber (711). The water can be filtered while flowing into the storage chamber (711). The water stored in the storage chamber (711) can be pumped by the circulation pump (61). The water stored in the storage chamber (711) can flow into the pump inlet (611) of the circulation pump (61) by the pumping force of the circulation pump (61).

[0177] FIG. 18 is a drawing illustrating the flow of water pumped by a circulation pump during a water supply operation or a spray operation according to various embodiments. FIG. 19 is a drawing illustrating the flow of water pumped by a circulation pump during a water supply operation or a spray operation according to various embodiments.

[0178] Referring to FIGS. 18 and 19, during a water supply operation or a spray operation, water pumped by the circulation pump (61) may flow into the distribution chamber (712). As will be described in more detail below, the water supply operation may include an operation of supplying water to the water storage chamber (711), and the spray operation may include an operation of spraying water into the inside of the tub (12). For example, the spray operation may include an operation of washing or rinsing a washing object (e.g., dishes) disposed inside the tub (12) by spraying water toward the washing object. For the water supply operation or the spray operation of the dishwasher (1), the first flow valve (94) may close the first flow path (991). The second flow path valve (97) may close the second flow path (992). The distribution valve (72) may open the third flow path (712f). For example, since the communication hole (7231) of the distribution disc (723) is provided on the third flow path (712f), the third flow path (712f) can be opened. Since the first flow path (991) and the second flow path (992) are closed and the third flow path (712f) is opened, water pumped by the circulation pump (61) can flow into the opened third flow path (712f). The water pumped by the circulation pump (61) can flow into the distribution chamber (712) through the connector (91). The water in the distribution chamber (712) can be supplied to the spray device (40) through the distribution cover (73). The spray device (40) can spray water supplied from the sump (70) into the tub (12). Accordingly, the water supply operation or spray operation of the dishwasher (1) can be performed.

[0179] FIG. 20 is a drawing illustrating the flow of water pumped by a circulation pump during filter bottom cleaning according to various embodiments. FIG. 21 is a cross-sectional perspective view illustrating water sprayed by a first cleaning nozzle during filter bottom cleaning according to various embodiments.

[0180] Referring to FIGS. 20 and 21, when cleaning the lower part of the first filter (310), water pumped by the circulation pump (61) can flow into the first flow path (991). For cleaning the lower part of the first filter (310), the first flow path valve (94) can open the first flow path (991). The second flow path valve (97) can close the second flow path (992). The distribution valve (72) can close the third flow path (712f). For example, since a portion of the distribution disk (723) where the communication hole (7231) is not formed is provided on the third flow path (712f), the third flow path (712f) can be closed. With the first flow path (991) open and the second flow path (992) and the third flow path (712f) closed, water pumped by the circulation pump (61) can flow into the open first flow path (991). The water pumped by the circulation pump (61) can flow into the first guide pipe (93) through the connector (91) and the connecting pipe (92). The water guided by the first guide pipe (93) can be sprayed toward the first filter (310) through the first cleaning nozzle (95). The first cleaning nozzle (95) can spray water toward the lower portion of the first filter (310).

[0181] Fig. 22 is a drawing illustrating the flow of water pumped by a circulation pump during filter top cleaning according to various embodiments. Fig. 23 is a cross-sectional perspective view illustrating water sprayed by a second cleaning nozzle during filter top cleaning according to various embodiments.

[0182] Referring to FIGS. 22 and 23, when cleaning the upper portion of the first filter (310), water pumped by the circulation pump (61) can flow to the second flow path (992). For cleaning the upper portion of the first filter (310), the first flow path valve (94) can close the first flow path (991). The second flow path valve (97) can open the second flow path (992). The distribution valve (72) can close the third flow path (712f). For example, since a portion of the distribution disk (723) where the communication hole (7231) is not formed is provided on the third flow path (712f), the third flow path (712f) can be closed. With the second flow path (992) open and the first flow path (991) and the third flow path (712f) closed, water pumped by the circulation pump (61) can flow into the open second flow path (992). The water pumped by the circulation pump (61) can flow into the second guide pipe (96) through the connector (91) and the connecting pipe (92). The water guided by the second guide pipe (96) can be sprayed toward the first filter (310) through the second cleaning nozzle (98). The second cleaning nozzle (98) can spray water toward the upper portion of the first filter (310).

[0183] Meanwhile, although not shown in the drawing, the upper cleaning of the first filter (310) and the lower cleaning of the first filter (310) may be performed simultaneously. For the upper cleaning of the first filter (310) and the lower cleaning of the first filter (310), the first flow valve (94) may open the first flow path (991), and the second flow path valve (97) may open the second flow path (992). The distribution valve (72) may close the third flow path (712f). With the first flow path (991) and the second flow path (992) open and the third flow path (712f) closed, the water pumped by the circulation pump (61) may flow into the opened first flow path (991) and the opened second flow path (992). The water pumped by the circulation pump (61) may be branched into the first guide pipe (93) and the second guide pipe (96). Water guided by the first guide pipe (93) can be sprayed toward the first filter (310) through the first cleaning nozzle (95). Water guided by the second guide pipe (96) can be sprayed toward the first filter (310) through the second cleaning nozzle (98). The first cleaning nozzle (95) can spray water toward the lower portion of the first filter (310), and the second cleaning nozzle (98) can spray water toward the upper portion of the first filter (310). However, the present disclosure is not limited thereto. For example, both the first cleaning nozzle (95) and the second cleaning nozzle (98) can spray water toward the lower portion of the first filter (310). For example, both the first cleaning nozzle (95) and the second cleaning nozzle (98) can spray water toward the upper portion of the first filter (310). For example, at least one of the first cleaning nozzle (95) and the second cleaning nozzle (98) can spray water toward approximately the middle portion of the first filter (310).

[0184] In addition, although the example in which water pumped by the circulation pump (61) is circulated to the water storage chamber (711) has been described above, the present disclosure is not limited thereto. For example, water pumped by the drain pump (62) may be provided to the water storage chamber (711) instead of being discharged to the outside. In this case, the first flow path (991) may be provided to guide the water pumped by the drain pump (62) to the water storage chamber (711), and the second flow path (992) may be provided to guide the water pumped by the drain pump (62) to the water storage chamber (711). The connecting pipe (92) may be provided to be disposed adjacent to the drain pump (62) to receive the water pumped by the drain pump (62). For example, the connecting pipe (92) may be communicated with the drain pump coupling portion (714) of the sump housing (71). Each of the first cleaning nozzle (95) and the second cleaning nozzle (98) may be arranged to spray water pumped by the drain pump (62) into the water storage chamber (711).

[0185] FIG. 24 is a control block diagram illustrating an exemplary configuration of a dishwasher according to various embodiments.

[0186] Referring to FIG. 24, the dishwasher (1) may include various components. The dishwasher (1) may include a control unit (110). The dishwasher (1) may include a user interface (e.g., including various circuits) (120). The dishwasher (1) may include a communication unit (e.g., including communication circuits) (130). The dishwasher (1) may include a temperature sensor (140). The dishwasher (1) may include a heater (63). The dishwasher (1) may include a circulation pump (61). The dishwasher (1) may include a drain pump (62). The dishwasher (1) may include a first flow valve (94). The dishwasher (1) may include a second flow valve (97). The dishwasher (1) may include a distribution valve (72). The dishwasher (1) may include a filter motor (350). The dishwasher (1) may include a first filter (310). The dishwasher may include a water supply valve (715a). The dishwasher (1) may further include components not illustrated in FIG. 24, depending on the embodiment. The dishwasher (1) may not include some of the components illustrated in FIG. 24, depending on the embodiment.

[0187] The control unit (110) can be electrically connected to various components of the dishwasher (1). The control unit (110) can control various components of the dishwasher (1).

[0188] The control unit (110) may include at least one memory (112) and at least one processor (e.g., including a processing circuit) (111) to perform the operations described above and operations described in more detail below.

[0189] The control unit (110) may include at least one memory (112) that stores data in the form of an algorithm and / or a program for controlling the operation of components within the dishwasher (1). The control unit (110) may include at least one processor (111) that performs the operations described above and operations described in more detail below using the data stored in the at least one memory (112). The memory (112) and the processor (111) may each be implemented as separate chips. The processor (111) may include one or more processor chips or one or more processing cores. The memory (112) may include one or more memory chips or one or more memory blocks. The memory (112) and the processor (111) may also be implemented as a single chip. The processor (111) may include various processing circuits and / or multiple processors. For example, the term "processor" as used herein, including in the claims, may encompass various processing circuits comprising at least one processor, one or more of which may be configured to individually and / or collectively perform various functions described herein in a distributed manner. As used herein, where "processor," "at least one processor," and "one or more processors" are described as being configured to perform various functions, these terms encompass, for example and without limitation, instances where one processor performs some functions and another processor performs other functions, and instances where one processor performs all of the functions. Additionally, the at least one processor may comprise a combination of processors that perform various of the enumerated / disclosed functions, for example, in a distributed manner. The at least one processor may execute program instructions to achieve or perform the various functions.

[0190] The control unit (110) processes user input received through the user interface (120) and can control various components of the dishwasher (1) based on the processed user input.

[0191] The control unit (110) can control various components of the dishwasher (1) to perform a cycle including a washing process, a rinsing process, a drying process, a cooling process, etc., according to user input entered through the user interface (120).

[0192] The user interface (120) can interact with a user. The user interface (120) can include various circuits.

[0193] The user interface (120) can obtain user input. The user interface (120) can display information about the dishwasher (1). For example, the user interface (120) can also provide visual and / or auditory feedback.

[0194] The user interface (120) may include an input unit (e.g., including an input circuit) (121).

[0195] The input unit (121) can receive an operation command from a user. The input unit (121) can provide an electrical output signal corresponding to the user input to the control unit (110). The input unit (121) can include various buttons and / or dials. The input unit (121) can obtain various user inputs, such as a user input for turning the dishwasher (1) on or off, a user input for selecting a washing course, a washing option, etc.

[0196] The user interface (120) may include a display unit (122).

[0197] The display unit (122) can display information regarding the status and / or operation of the dishwasher (1). The display unit (122) can display information input by the user and / or information provided to the user. The display unit (122) can display information related to the operation of the dishwasher (1) in the form of at least one of an image or text. The display unit (122) can receive a signal from the control unit (110) and display information corresponding to the received signal. In addition, the display unit (122) can display a graphical user interface (GUI) that enables control of the dishwasher (1). That is, the display unit (122) can display a user interface element (UI element) such as an icon.

[0198] The display unit (122) may include various types of display panels. For example, the display may include a liquid crystal display panel (LCD panel), a light emitting diode panel (LED panel), an organic light emitting diode panel (OLED panel), or a micro LED panel. Additionally, the display may be implemented as a touch display.

[0199] A dishwasher (1) may provide various washing cycles for washing dishes. For example, various washing cycles may be provided, such as an automatic cycle, a standard cycle, an intensive cycle, a rapid cycle, and / or a rinse-dry cycle. The number and / or types of operations included in each washing cycle may vary. Additionally, each washing cycle may include various changeable washing options (e.g., washing time, temperature, etc.). A user may select a washing cycle and change various washing options constituting the washing cycle using a user interface (120). The dishwasher (1) may operate according to the washing cycle and washing options set by the user input.

[0200] The communication unit (130) can transmit data to an external device or receive data from an external device based on a control signal from the control unit (110). For example, the communication unit (130) can communicate with a server, a user terminal device, and / or other home appliances to transmit and receive various types of data. The communication unit (130) can include various communication circuits.

[0201] The communication unit (130) may support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between external devices (e.g., a server, a user terminal device, and / or a home appliance), and the performance of communication through the established communication channel. According to one embodiment, the communication unit (130) may include a wireless communication module (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module (e.g., a local area network (LAN) communication module, or a power line communication module). Among these communication modules, a corresponding communication module may communicate with an external electronic device through a first network (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network (e.g., a long-range communication network such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)). These different types of communication modules may be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips).

[0202] The communication unit (130) can establish communication with a user terminal device through a server.

[0203] The communication unit (130) may include a Wi-Fi module and may perform communication with an external server and / or user terminal device based on establishing communication with an access point (AP) in the home.

[0204] The temperature sensor (140) can detect the temperature of the water contained in the water storage chamber (711). The temperature sensor (140) can transmit a detection signal and / or data to the control unit (110). The control unit (110) can control the heater (63) based on the detection signal and / or data transmitted from the temperature sensor (140). The control unit (110) can control the heater (63) based on a change in the water temperature detected by the temperature sensor (140).

[0205] The heater (63) may be provided to heat water. For example, the heater (63) may be provided to heat water contained in the water storage chamber (711). For example, the heater (63) may be provided in the circulation pump (61). For example, while the circulation pump (61) is operating, the heater (63) may heat water pumped by the circulation pump (61). For example, water contained in the water storage chamber (711) may be heated by the heater (63) while being pumped by the circulation pump (61). However, the present disclosure is not limited to the above-described example, and the heater (63) may be provided in a separate configuration from the circulation pump (61). The heater (63) may also operate independently of the circulation pump (61). The location of the heater (63) is not limited. For example, the heater (63) can heat water stored in a space (e.g., a water tank) separate from the water storage chamber (711), and the circulation pump (61) can supply water heated by the heater (63) to the water storage chamber (711).

[0206] The circulation pump (61) may be provided to pump water contained in the water storage chamber (711). The water pumped by the circulation pump (61) may be provided to the spray device (40), the first cleaning nozzle (95), or the second cleaning nozzle (98). The control unit (110) may control the circulation pump (61). The control unit (110) may control the operation of the circulation pump (61). The control unit (110) may operate or stop the circulation pump (61). The control unit (110) may control the circulation pump (61) based on the operation (mode) of the dishwasher (1). The control unit (110) may control the circulation pump (61) based on user input obtained through the user interface (120) and / or an external device. The control unit (110) may control the on / off, operation time, rotation speed, etc. of the circulation pump (61).

[0207] The drain pump (62) may be provided to drain water and foreign substances inside the water storage chamber (711). The water and foreign substances pumped by the drain pump (62) may be discharged to the outside of the dishwasher (1). The control unit (110) may control the drain pump (62). The control unit (110) may control the operation of the drain pump (62). The control unit (110) may operate or stop the drain pump (62). The control unit (110) may control the drain pump (62) based on the operation (mode) of the dishwasher (1). The control unit (110) may control the drain pump (62) based on user input obtained through the user interface (120) and / or an external device. The control unit (110) may control the on / off, operation time, rotation speed, etc. of the drain pump (62).

[0208] The first flow valve (94) can open or close the first flow path (991) provided to guide water pumped by the circulation pump (61) to the water storage chamber (711). The control unit (110) can control the first flow path valve (94). The control unit (110) can open or close the first flow path valve (94). Opening the first flow path valve (94) by the control unit (110) can include controlling the first flow path valve (94) to open the first flow path (991). Closing the first flow path valve (94) by the control unit (110) can include controlling the first flow path valve (94) to close the first flow path (991). The control unit (110) can control the first flow path valve (94) based on the operation (mode) of the dishwasher (1). The control unit (110) can control the first euro valve (94) based on user input obtained through the user interface (120) and / or an external device.

[0209] The second flow valve (97) can open or close the second flow valve (992) which is provided to guide water pumped by the circulation pump (61) to the water storage chamber (711). The control unit (110) can control the second flow valve (97). The control unit (110) can open or close the second flow valve (97). Opening the second flow valve (97) by the control unit (110) can include controlling the second flow valve (97) so that the second flow valve (992) is opened. Closing the second flow valve (97) by the control unit (110) can include controlling the second flow valve (97) so that the second flow valve (992) is closed. The control unit (110) can control the second flow valve (97) based on the operation (mode) of the dishwasher (1). The control unit (110) can control the second euro valve (97) based on user input obtained through the user interface (120) and / or an external device.

[0210] The distribution valve (72) can open or close the third flow path (712f) provided to guide water pumped by the circulation pump (61) to the spray device (40). The control unit (110) can control the distribution valve (72). The control unit (110) can open or close the distribution valve (72). Opening the distribution valve (72) by the control unit (110) can include controlling the distribution valve (72) so that the third flow path (712f) is opened. Closing the distribution valve (72) by the control unit (110) can include controlling the distribution valve (72) so that the third flow path (712f) is closed. The control unit (110) can control the distribution valve (72) based on the operation (mode) of the dishwasher (1). The control unit (110) can control the distribution valve (72) based on user input obtained through the user interface (120) and / or an external device.

[0211] The filter motor (350) may be arranged to rotate the first filter (310). As the first filter (310) is rotated by the filter motor (350) during cleaning of the first filter (310), the cleaning efficiency of the first filter (310) may be increased. The control unit (110) may control the filter motor (350). The control unit (110) may control the operation of the filter motor (350). The control unit (110) may operate or stop the filter motor (350). The control unit (110) may control the filter motor (350) based on the operation (mode) of the dishwasher (1). The control unit (110) may control the filter motor (350) based on user input obtained through the user interface (120) and / or an external device. The control unit (110) may control on / off, operation time, rotation speed, etc. of the filter motor (350).

[0212] The water supply valve (715a) may be provided on a water supply path (not shown) connecting an external water source and a sump (70). The water supply valve (715a) may open or close the water supply path. When the water supply valve (715a) opens the water supply path, water may be supplied to the water storage chamber (711). When the water supply valve (715a) closes the water supply path, water may not be supplied to the water storage chamber (711). The control unit (110) may control the water supply valve (715a). The control unit (110) may open or close the water supply valve (715a). Opening the water supply valve (715a) by the control unit (110) may include controlling the water supply valve (715a) to open the water supply path. Closing of the water supply valve (715a) by the control unit (110) may include controlling the water supply valve (715a) to close the water supply path. The control unit (110) may control the water supply valve (715a) to regulate the water supply to the water storage chamber (711). The control unit (110) may control the water supply valve (715a) based on the operation (mode) of the dishwasher (1). The control unit (110) may control the water supply valve (715a) based on user input obtained through the user interface (120) and / or an external device.

[0213] FIG. 25 is a flowchart illustrating an example of the overall operation of a dishwasher according to various embodiments.

[0214] Referring to FIG. 25, the control unit (110) of the dishwasher (1) can identify the selection of a washing course and washing option (1010). The user can select the washing course and washing option using the user interface (120) or an external device. The control unit (110) can retrieve a command or data corresponding to the user input. Generally, the washing course may include a washing cycle, a rinsing cycle, a drying cycle, and a cooling cycle. The washing option may include detailed settings for each of the washing cycle, the rinsing cycle, the drying cycle, and the cooling cycle. The control unit (110) can control the operation of the dishwasher (1) according to the selected washing course and washing option. For example, the washing cycle, the rinsing cycle, the drying cycle, and the cooling cycle may be performed sequentially.

[0215] A dishwasher (1) can perform a washing cycle (1020). The washing cycle can include a water supply operation (1021), a spray operation (washing) (1022), and a drain operation (1023).

[0216] The water supply operation (1021) of the washing process may include supplying water to the water storage chamber (711) of the sump (70) and / or the tub (12). For the water supply operation (1021) of the washing process, the control unit (110) may open the water supply valve (715a). For example, the water supplied to the water storage chamber (711) of the sump (70) and / or the tub (12) may be mixed with detergent.

[0217] The spraying operation (washing) (1022) of the washing process may include spraying water into the tub (12). Water stored in the sump (70) may be sprayed into the tub (12) via the spraying device (40). For example, the spraying device (40) may receive water contained in the distribution chamber (712) from the distribution cover (73) and / or the duct (20). The water sprayed from the spraying device (40) may wash an object to be washed (e.g., dishes). For example, the spraying device (40) may spray water mixed with detergent into the tub (12). For the spraying operation (washing) (1022) of the washing process, the control unit (110) may operate the circulation pump (61).

[0218] The drain operation (1023) of the washing process may include discharging water remaining in the sump (70) to the outside. For the drain operation (1023) of the washing process, the control unit (110) may operate the drain pump (62).

[0219] The washing process (1020) may include a pre-wash process and a main washing process. Each of the pre-wash process and the main washing process may include a water supply operation, a spray operation, and a drain operation.

[0220] The dishwasher (1) can perform a rinsing cycle (1030). The rinsing cycle can include a water supply operation (1031), a spraying operation (rinsing) (1032), and a draining operation (1033).

[0221] The water supply operation (1031) of the rinsing cycle may include supplying water to the water storage chamber (711) of the sump (70) and / or the tub (12). For the water supply operation (1031) of the rinsing cycle, the control unit (110) may open the water supply valve (715a). For example, the water supplied to the water storage chamber (711) of the sump (70) and / or the tub (12) may not be mixed with detergent.

[0222] The spraying operation (rinsing) (1032) of the rinsing cycle may include spraying water into the tub (12). Water stored in the sump (70) may be sprayed into the tub (12) via the spraying device (40). For example, the spraying device (40) may receive water contained in the distribution chamber (712) from the distribution cover (73) and / or the duct (20). The water sprayed from the spraying device (40) may rinse a washing object (e.g., dishes). For example, the spraying device (40) may spray water without detergent mixed into the tub (12). For the spraying operation (rinsing) (1032) of the rinsing cycle, the control unit (110) may operate the circulation pump (61). During the spraying operation (rinsing) (1032) of the rinsing cycle, the control unit (110) may operate the heater (63) to rinse the washing object (e.g., dishes) with water having a relatively high temperature. The washing object can be heated as it is rinsed with water having a high temperature during the rinsing cycle (1030), and can be efficiently dried by latent heat after the rinsing cycle (1030) is completed.

[0223] The drain operation (1033) of the rinsing cycle may include discharging water remaining in the sump (70) to the outside. For the drain operation (1033) of the rinsing cycle, the control unit (110) may operate the drain pump (62).

[0224] The rinsing process (1030) may be performed multiple times.

[0225] The dishwasher (1) can perform a drying cycle (1040). During the drying cycle, hot air may be supplied to the tub (12) or air may be circulated within the tub (12). This allows moisture remaining on the object to be washed to evaporate.

[0226] The dishwasher (1) can perform a cooling cycle (1050). During the cooling cycle, air having a relatively low temperature can be supplied into the tub (12). This can lower the temperature of the object to be washed. In various embodiments, the cooling cycle (1050) can also be defined as part of the drying cycle (1040).

[0227] FIG. 26 is a flowchart illustrating an example of a control method for a dishwasher according to various embodiments.

[0228] Referring to Fig. 26, the water supply operation or spray operation of the dishwasher (1) can be performed (2010). For example, the water supply operation and the spray operation can be included in a washing course. For example, each of the water supply operation and the spray operation can be selected as a washing option. For example, each of the water supply operation and the spray operation can be performed as a separate operation (mode) that is not included in the washing course.

[0229] A filter soaking operation (mode) may be performed (2020). The filter soaking operation may include soaking the first filter (310) with water contained in the water storage chamber (711) for a predetermined soaking time (also referred to as a designated soaking time). For example, after the water supply operation or the spraying operation is completed, the water contained in the water storage chamber (711) may not be drained immediately. After the water supply operation or the spraying operation is completed, the water contained in the water storage chamber (711) may wait for a predetermined soaking time. After the water supply operation or the spraying operation is completed, the water contained in the water storage chamber (711) may be held for a predetermined soaking time. The first filter (310) disposed inside the water storage chamber (711) may be immersed in water stored in the water storage chamber (711). In this way, foreign substances attached to the first filter (310) can be separated from the first filter (310) or made easily separable from the first filter (310) by being immersed in water for a predetermined soaking time.

[0230] A draining operation may be performed (2030). The draining operation may include discharging water contained in the water storage chamber (711) to the outside. The control unit (110) may operate the draining pump (62).

[0231] FIG. 27 is a flowchart illustrating an example of a control method for a dishwasher according to various embodiments.

[0232] Referring to Fig. 27, a water supply operation or a spray operation of the dishwasher (1) can be performed (3010). After the water supply operation or the spray operation of the dishwasher (1) is completed, based on the elapse of a predetermined soaking time (example of 3020), the control unit (110) can operate the drain pump (62) (3030).

[0233] For example, the control unit (110) may perform a water supply operation or a spray operation based on obtaining a selection input of a filter-soaking operation (mode) from a user through the user interface (120). For example, the control unit (110) may perform a water supply operation or a spray operation based on obtaining a selection input of a filter-soaking operation (mode) from an external device (e.g., a server, a user terminal device, and / or a home appliance). The control unit (110) may perform a drain operation based on the elapse of a predetermined soaking time after the water supply operation or the spraying operation is completed. That is, the control unit (110) may perform a filter-soaking operation (mode) based on obtaining a user input regardless of the cycle of the dishwasher (1).

[0234] For example, the control unit (110) can count the unused time from the last use of the dishwasher (1) and perform a water supply operation or a spray operation based on the unused time elapsed by a predetermined reference time (also referred to as a designated reference time). The control unit (110) can perform a drain operation based on the elapsed time of a predetermined soaking time after the end of the water supply operation or the spraying operation. The control unit (110) can determine whether the dishwasher (1) has been unused for a long period of time. For example, the control unit (110) can determine whether the dishwasher (1) has been unused for a long period of time based on a signal and / or data received from at least one sensor (e.g., a water level sensor) provided in the dishwasher (1). The control unit (110) can perform a filter soaking operation (mode) based on determining that the dishwasher (1) has been unused for a long period of time. This can prevent or reduce foreign substances from sticking to the first filter (310). The first filter (310) can be prevented / reduced from being clogged by foreign substances.

[0235] For example, the control unit (110) may perform a draining operation based on the passage of a predetermined soaking time after the water supply operation or spraying operation is completed in the last rinse operation among a plurality of rinse operations. The water used in the last rinse operation may be maintained in a state stored inside the water storage chamber (711). The first filter (310) may be soaked for a predetermined soaking time with the water used in the last rinse operation. The filter soaking operation (mode) may be included in the washing course. For example, the water used in the last rinse operation may be water heated by a heater (63) during the rinse operation.

[0236] If the predetermined soaking time has not elapsed (No of 3020), the drain pump (62) may not operate. The control unit (110) may not operate the drain pump (62) until the predetermined soaking time has elapsed after the water supply operation or the spraying operation has ended. If the predetermined soaking time has not elapsed after the water supply operation or the spraying operation has ended, the control unit (110) may determine that the filter soaking operation has not been sufficiently performed.

[0237] FIG. 28 is a flowchart illustrating an example of a control method for a dishwasher according to various embodiments.

[0238] Referring to Fig. 28, a water supply operation or a spraying operation of the dishwasher (1) can be performed (4010).

[0239] A filter calling operation (mode) can be performed (4020). As the filter calling operation is performed before the filter cleaning operation, the cleaning efficiency of the first filter (310) can be increased.

[0240] A filter cleaning operation (mode) may be performed (4030). The filter cleaning operation may include spraying water toward a first filter (310) disposed inside a water storage chamber (711). A first cleaning nozzle (95) and / or a second cleaning nozzle (98) may spray water toward the first filter (310). Foreign substances attached to the first filter (310) may be separated from the first filter (310) by the water sprayed from the first cleaning nozzle (95) and / or the second cleaning nozzle (98). For example, the filter cleaning operation may include cleaning the lower portion of the first filter (310), cleaning the upper portion of the first filter (310), or cleaning the upper / lower portions of the first filter (310). For example, the filter cleaning operation may include sequentially cleaning the upper portion of the first filter (310) after cleaning the lower portion of the first filter (310). For example, the filter cleaning operation may include sequentially cleaning the upper portion of the first filter (310) followed by cleaning the lower portion of the first filter (310). For example, the filter cleaning operation may include simultaneously cleaning the lower portion of the first filter (310) and cleaning the upper portion of the first filter (310).

[0241] A drainage operation can be performed (4040).

[0242] FIG. 29 is a flowchart illustrating an example of a control method for a dishwasher according to various embodiments.

[0243] Referring to Fig. 29, a water supply operation or a water spraying operation of the dishwasher (1) can be performed (5010). Based on the elapse of a predetermined soaking time (example of 5020), the control unit (110) can operate the circulation pump (61) and open at least one flow valve (94 and / or 97) (5030). Water pumped by the circulation pump (61) can flow into the first flow path (991) and / or the second flow path (992) as the at least one flow valve (94 and / or 97) is opened. Water flowing through the first flow path (991) can be sprayed onto the first filter (310) through the first cleaning nozzle (95). Water flowing through the second flow path (991) can be sprayed onto the first filter (310) through the second cleaning nozzle (98). Accordingly, water sprayed through the first cleaning nozzle (95) and / or the second cleaning nozzle (98) can separate the first filter (310) and foreign substances captured in the first filter (310). Accordingly, the first filter (310) can be cleaned.

[0244] Upon elapse of a predetermined cleaning time (also referred to as a designated cleaning time) (e.g., 5040), the control unit (110) may stop the operation of the circulation pump (61), close at least one flow valve (94 and / or 97), and operate the drain pump (62) (5050). As the operation of the circulation pump (61) is stopped and at least one flow valve (94 and / or 97) is closed, water inside the water storage chamber (711) may not flow into the first flow path (991) and / or the second flow path (992). As the drain pump (62) operates, water and foreign substances remaining in the water storage chamber (711) may be discharged to the outside.

[0245] FIG. 30 is a table illustrating an example of the operation of dishwasher configurations according to various embodiments.

[0246] Referring to FIG. 30, the configurations of the dishwasher (1) can be controlled by the control unit (110) based on various operations (modes) of the dishwasher (1).

[0247] For the water supply operation or spray operation of the dishwasher (1), the control unit (110) can open the distribution valve (72) and close the first flow valve (94) and the second flow valve (97). The control unit (110) can operate the circulation pump (61). The control unit (110) can control the drain pump (62) not to operate. The control unit (110) can control the filter motor (350) not to rotate the first filter (310). The circulation pump (61) can pump water stored in the water storage chamber (711). The water pumped by the circulation pump (61) can flow into the distribution chamber (712). The water flowing into the distribution chamber (712) can be sprayed into the tub (12) by the spray device (40). Water sprayed into the tub (12) can flow into the water storage chamber (711). The water stored in the water storage chamber (711) can be circulated.

[0248] For the filter soaking operation of the dishwasher (1), the control unit (110) can close the distribution valve (72), the first flow valve (94), and the second flow valve (72). The control unit (110) can stop the operation of the circulation pump (61). The control unit (110) can control the drain pump (62) not to operate. The water in the water storage chamber (711) can wait for a predetermined soaking time to soak the first filter (311). The water in the water storage chamber (711) can be held without being drained for the predetermined soaking time. The first filter (310) can be immersed in the water contained in the water storage chamber (711) for the predetermined soaking time. Foreign substances attached to the first filter (310) can also be immersed in the water contained in the water storage chamber (711) for the predetermined soaking time. Thereby, the foreign substance can be separated from the first filter (310) or can be easily separated from the first filter (310). In order to separate the foreign substance attached to the first filter (310) from the first filter (310) during the filter calling operation, the control unit (110) may control the filter motor (350) so that the first filter (310) rotates. However, the present disclosure is not limited thereto, and the control unit (110) may also control the filter motor (350) so that the first filter (310) does not rotate.

[0249] When hot water supply is required during the filter soaking operation of the dishwasher (1), the control unit (110) can open at least one flow valve (94 and / or 97) for a predetermined heating time. The control unit (110) can operate the circulation pump (61) for a predetermined heating time (also referred to as a designated heating time) during the predetermined soaking time. The control unit (110) can operate the heater (63) for a predetermined heating time during the predetermined soaking time. The circulation pump (61) can pump water heated by the heater (63). The water pumped by the circulation pump (61) can flow into the first flow path (991) and / or the second flow path (992). The water flowing through the first flow path (991) can be sprayed onto the first filter (310) through the first cleaning nozzle (95). Water flowing through the second euro (991) can be sprayed to the first filter (310) through the second cleaning nozzle (98). As a result, water (hot water) heated by the heater (63) can be supplied to the water storage chamber (711).

[0250] For example, the control unit (110) may determine that hot water supply is necessary based on the elapse of a predetermined waiting time (also called a designated waiting time) after the filter calling operation has started.

[0251] For example, the control unit (110) may determine that hot water supply is necessary based on obtaining a selection input for hot water supply from a user through a user interface (120) and / or an external device.

[0252] For example, the temperature sensor (140) can detect the temperature of water contained in the water storage chamber (711) at regular time intervals or in real time and transmit the temperature to the control unit (110), and the control unit (110) can determine that hot water supply is necessary based on the temperature detected by the temperature sensor (140) being lower than the set temperature.

[0253] For the filter cleaning operation of the dishwasher (1), the control unit (110) can close the distribution valve (72), open at least one flow valve (94 and / or 97), and operate the circulation pump (61). The control unit (110) can control the drain pump (62) not to operate. The control unit (110) can operate the filter motor (350) to rotate the first filter (310). The circulation pump (61) can pump water stored in the water storage chamber (711). The water pumped by the circulation pump (61) can pass through the first flow path (991) and / or the second flow path (992), and then be sprayed toward the first filter (310) disposed inside the water storage chamber (711).

[0254] For example, to intensively clean the lower portion of the first filter (310), the control unit (110) can open the first flow valve (94) and close the second flow valve (97). Water pumped by the circulation pump (61) can flow through the first flow path (991) to the first cleaning nozzle (95). The first cleaning nozzle (95) can spray water toward the lower portion of the first filter (310).

[0255] For example, to intensively clean the upper portion of the first filter (310), the control unit (110) can close the first flow valve (94) and open the second flow valve (97). Water pumped by the circulation pump (61) can flow through the second flow path (992) to the second cleaning nozzle (98). The second cleaning nozzle (98) can spray water toward the upper portion of the first filter (310).

[0256] For example, although not clearly shown in FIG. 30, in order to simultaneously clean the upper and lower portions of the first filter (310), the control unit (110) can open both the first flow valve (94) and the second flow valve (97). Water pumped by the circulation pump (61) can flow separately into the first flow path (991) and the second flow path (992). The first cleaning nozzle (95) can spray water toward the lower portion of the first filter (310), and the second cleaning nozzle (98) can spray water toward the upper portion of the first filter (310).

[0257] For the drain operation of the dishwasher (1), the control unit (110) can operate the drain pump (62). The control unit (110) can close the distribution valve (72). The control unit (110) can close the first flow valve (94). The control unit (110) can close the second flow valve (97). The control unit (110) can stop the operation of the filter motor (350) so that the first filter (310) does not rotate. The control unit (110) can stop the operation of the circulation pump (61). The drain pump (62) can pump water contained in the water storage chamber (711). The water pumped by the drain pump (62) can be discharged to the outside.

[0258] FIG. 30 is merely intended to illustrate an example of the operation of dishwasher components, and the present disclosure is not limited to what is illustrated in FIG. 30.

[0259] FIG. 31 is a timing diagram illustrating an example of the operation of dishwasher configurations according to various embodiments.

[0260] Referring to Fig. 31, the water supply operation or spraying operation of the dishwasher (1) may be terminated at a first time point (t1). Based on the termination of the water supply operation or spraying operation, the filter soaking operation of the dishwasher (1) may be started. Based on the termination of the water supply operation or spraying operation, the control unit (110) may keep the drain pump (62) in an OFF state for a predetermined soaking time (a). Based on the termination of the water supply operation or spraying operation, the control unit (110) may turn the circulation pump (61) OFF for a predetermined soaking time (a). Accordingly, the control unit (110) may cause the water stored in the water storage chamber (711) to standby for a predetermined soaking time (a) based on the termination of the water supply operation or spraying operation. The first filter (310) and foreign substances captured in the first filter (310) can be called by water waiting in the water storage chamber (711).

[0261] At a second time point (t2), the filter cleaning operation of the dishwasher (1) may be started. The filter cleaning operation of the dishwasher (1) may be started based on the elapse of a predetermined soaking time (a) after the water supply operation or the spraying operation is finished (e.g., after t1). The control unit (110) may keep the drain pump (62) in an OFF state for a predetermined cleaning time (b) based on the elapse of the predetermined soaking time (a) after the water supply operation or the spraying operation is finished (e.g., after t1). The control unit (110) may turn on the circulation pump (61) for a predetermined cleaning time (b) based on the elapse of the predetermined soaking time (a) after the water supply operation or the spraying operation is finished (e.g., after t1). In addition, although not clearly shown in the drawing, the control unit (110) may open at least one flow valve (94 and / or 97) for a predetermined cleaning time (b) based on the elapsed time (a) of a predetermined soaking time after the water supply operation or spraying operation is terminated (e.g., after t1). The control unit (110) may operate the filter motor (350) to rotate the first filter (310) for a predetermined cleaning time (b) based on the elapsed time (a) of a predetermined soaking time after the water supply operation or spraying operation is terminated (e.g., after t1). As a result, water pumped by the circulation pump (61) may be sprayed onto the first filter (310) through at least one cleaning nozzle (95 and / or 98). The first filter (310) can be cleaned by water sprayed from at least one cleaning nozzle (95 and / or 98) while being rotated by a filter motor (350).

[0262] At a third time point (t3), the drain operation of the dishwasher (1) may start. The drain operation of the dishwasher (1) may start based on the elapse of a predetermined cleaning time (b) after the start of filter cleaning (e.g., after t2). The control unit (110) may turn on the drain pump (62) for a predetermined drain time (also referred to as a designated drain time) (c) based on the elapse of the predetermined cleaning time (b) after the start of filter cleaning (e.g., after t2). The control unit (110) may turn off the circulation pump (61) based on the elapse of the predetermined cleaning time (b) after the start of filter cleaning (e.g., after t2). In addition, although not explicitly shown in the drawing, the control unit (110) may close all the flow valves (94 and 97) based on the elapse of the predetermined cleaning time (b) after the start of filter cleaning (e.g., after t2). In this way, the water contained in the sump (70) can be discharged to the outside.

[0263] The drain operation of the dishwasher (1) may be terminated at a fourth time point (t4). The drain operation of the dishwasher (1) may be terminated based on the elapse of a predetermined drain time (c) after the drain operation has started (e.g., after t3).

[0264] FIG. 32 is a timing diagram illustrating an example of the operation of dishwasher configurations according to various embodiments.

[0265] Referring to Fig. 32, the water supply operation or spraying operation of the dishwasher (1) may be terminated at a first time point (t1). Based on the termination of the water supply operation or spraying operation, the filter soaking operation of the dishwasher (1) may be performed for a predetermined soaking time (a1). Hot water may be supplied to the sump (70) during the filter soaking operation of the dishwasher (1).

[0266] Below, an example of hot water being supplied to the sump (70) during the filter calling operation of the dishwasher (1) is described.

[0267] Based on the completion of the water supply operation or spraying operation, water in the water storage chamber (711) may wait for a predetermined first waiting time (also referred to as a designated first waiting time) (a11). The control unit (110) may keep the circulation pump (61) and the drainage pump (62) in an OFF state for the predetermined first waiting time (a11).

[0268] Based on the elapse of a predetermined first standby time (a11), hot water may be supplied to the water storage chamber (711) for a predetermined heating time (d). For example, the hot water supply may start at a fifth time point (t5) and end at a sixth time point (t6). In the present disclosure, the hot water supply may include heating water contained in the water storage chamber (711) while circulating it and supplying it back to the water storage chamber (711). In addition, the hot water supply may include supplying additional hot water to the water contained in the water storage chamber (711). The control unit (110) may turn on the heater (63) for a predetermined heating time (d). The control unit (110) may turn on the circulation pump (61) for a predetermined heating time (d). The water heated by the heater (63) may be supplied to the water storage chamber (711) by the circulation pump (61). By this, cooling of water in the water storage chamber (711) during the filter calling operation can be prevented and / or reduced. The cleaning efficiency of the first filter (310) can be increased.

[0269] Based on the elapse of the predetermined heating time (d), water in the water storage chamber (711) can wait for a predetermined second waiting time (also referred to as a designated second waiting time) (a12). The control unit (110) can keep the circulation pump (61) and the drain pump (62) in an OFF state for the predetermined second waiting time (a12).

[0270] Meanwhile, the above has been described as an example of supplying hot water to the sump (70) based on the elapse of a predetermined time (e.g., the first waiting time (a11)) during the filter-calling operation, but the present disclosure is not limited thereto. For example, hot water may be supplied to the sump (70) based on the temperature of the water contained in the water storage chamber (711) becoming lower than the set temperature during the filter-calling operation. For example, the control unit (110) may operate the heater (63) and the circulation pump (61) based on the temperature detected by the temperature sensor (140) being lower than the reference temperature.

[0271] At a seventh time point (t7), the filter cleaning operation of the dishwasher (1) may be started. The filter cleaning operation of the dishwasher (1) may be started based on the elapse of a predetermined soaking time (a1) after the water supply operation or the spraying operation is finished (e.g., after t1). The control unit (110) may keep the drain pump (62) in an OFF state for a predetermined cleaning time (b1) based on the elapse of a predetermined soaking time (a1) after the water supply operation or the spraying operation is finished (e.g., after t1). The control unit (110) may turn on the circulation pump (61) for a predetermined cleaning time (b1) based on the elapse of a predetermined soaking time (a1) after the water supply operation or the spraying operation is finished (e.g., after t1). In addition, although not explicitly shown in the drawing, the control unit (110) may open at least one flow valve (94 and / or 97) for a predetermined cleaning time (b1) based on the elapse of a predetermined calling time (a1) after the end of the water supply operation or the spraying operation (e.g., after t1). During the filter cleaning operation of the dishwasher (1), the heater (63) may be in an ON or OFF state. The control unit (110) may control the on / off of the heater (63).

[0272] At the eighth time point (t8), the drain operation of the dishwasher (1) may start. The drain operation of the dishwasher (1) may start based on the elapse of a predetermined cleaning time (b1) after the start of filter cleaning (e.g., after t7). The control unit (110) may turn on the drain pump (62) for a predetermined drain time (c1) based on the elapse of a predetermined cleaning time (b1) after the start of filter cleaning (e.g., after t7). The control unit (110) may turn off the circulation pump (61) based on the elapse of a predetermined cleaning time (b1) after the start of filter cleaning (e.g., after t7). In addition, although not clearly shown in the drawing, the control unit (110) may close all the flow valves (94 and 97) based on the elapse of a predetermined cleaning time (b1) after the start of filter cleaning (e.g., after t7). In this way, the water contained in the sump (70) can be discharged to the outside.

[0273] The drain operation of the dishwasher (1) may be terminated at a ninth time point (t9). The drain operation of the dishwasher (1) may be terminated based on the elapse of a predetermined drain time (c1) after the drain operation has started (e.g., after t8).

[0274] FIG. 33 is a timing diagram illustrating an example of the operation of dishwasher configurations according to various embodiments.

[0275] Referring to FIG. 33, filter cleaning of the dishwasher (1) can be performed based on the completion of the filter soaking operation of the dishwasher (1). Draining operation of the dishwasher (1) can be performed based on the completion of the filter cleaning operation of the dishwasher (1). The control unit (110) can perform the filter cleaning operation before operating the drain pump (62) after the water supply operation or the spraying operation is completed and a predetermined soaking time has elapsed.

[0276] During the filter-boiling operation of the dishwasher (1), the control unit (110) can keep the first flow valve (94), the second flow valve (97), and the circulation pump (61) in the OFF state. Although not shown in Fig. 33, during the filter-boiling operation of the dishwasher (1), the control unit (110) can keep the drain pump (62) in the OFF state.

[0277] During the filter cleaning operation of the dishwasher (1), the control unit (110) can turn on the circulation pump (61). The control unit (110) can operate the circulation pump (61) for a predetermined cleaning time (b2) based on the elapse of a predetermined soaking time (a, a1) after the water supply operation or spraying operation is completed.

[0278] During the filter cleaning operation of the dishwasher (1), the control unit (110) can turn on the filter motor (350). The first filter (310) can be rotated within the water storage chamber (711) by the filter motor (350). The control unit (110) can operate the filter motor (350) for a predetermined cleaning time (b2) based on the elapse of a predetermined soaking time (a, a1) after the water supply operation or spraying operation is completed.

[0279] During the filter cleaning operation of the dishwasher (1), the control unit (110) can open (OPEN) at least one flow valve (94 and / or 97). The control unit (110) can open (OPEN) at least one flow valve (94 and / or 97) for a predetermined cleaning time (b2) based on the elapse of a predetermined soaking time (a, a1) after the end of the water supply operation or the spraying operation.

[0280] For example, the control unit (110) may open one of the first flow valve (94) and the second flow valve (97) and close the other of the first flow valve (94) and the second flow valve (97) for a predetermined first cleaning time (also referred to as a designated first cleaning time) (b21) after the filter cleaning operation starts (e.g., after t2 or t7). The control unit (110) may close one of the first flow valve (94) and the second flow valve (97) and open the other of the first flow valve (94) and the second flow valve (97) for a predetermined second cleaning time (also referred to as a designated second cleaning time) (b22) based on the elapse of the predetermined first cleaning time (b21).

[0281] For example, referring to FIG. 33, the control unit (110) can open the first flow valve (94) and close the second flow valve (97) for a predetermined first cleaning time (b21), and close the first flow valve (94) and open the second flow valve (97) for a predetermined second cleaning time (b22). As a result, the lower cleaning of the first filter (310) and the upper cleaning of the first filter (310) can be performed sequentially. For example, the control unit (110) can switch the flow at a tenth time point (t10) after the predetermined first cleaning time (b21) has elapsed after the filter cleaning operation starts. The control unit (110) can close the first flow valve (94) and open the second flow valve (97) at the tenth time point (t10). However, the present disclosure is not limited to the example illustrated in FIG. 33. For example, the control unit (110) may close the first flow valve (94) at a tenth time point (t10) and open the second flow valve (97) based on the passage of a predetermined time (not shown) from the tenth time point (t10). At this time, the filter motor (350) may be in an ON or OFF state during a predetermined time (not shown) from the tenth time point (t10).

[0282] However, the present disclosure is not limited to that illustrated in FIG. 33, and the control unit (110) may close the first flow valve (94) and open the second flow valve (97) for a predetermined first cleaning time (b21), and may open the first flow valve (94) and close the second flow valve (97) for a predetermined second cleaning time (b22). As a result, the upper cleaning of the first filter (310) and the lower cleaning of the first filter (310) may be sequentially performed. In addition, although not illustrated in the drawing, the control unit (110) may control the first flow valve (94) and the second flow valve (97) so that at least a portion of the opening time of the first flow valve (94) and at least a portion of the opening time of the second flow valve (97) overlap. As a result, the lower cleaning of the first filter (310) and the upper cleaning of the first filter (310) may be performed simultaneously.

[0283] Meanwhile, FIGS. 31, 32, and 33 (also referred to as FIGS. 31 to 33) illustrate examples in which the dishwasher (1) performs a filter cleaning operation after the filter soaking operation and before the draining operation. However, the present disclosure is not limited to the examples illustrated in FIGS. 31 to 33. For example, the filter cleaning operation may be omitted in FIGS. 31 to 33. At this time, the dishwasher (1) may perform a draining operation after the filter soaking operation. The control unit (110) may operate the drain pump (62) based on the elapse of a predetermined soaking time (a, a1) after the water supply operation or the spraying operation is terminated (e.g., after t1). At this time, the control unit (110) may control the user interface (120) to provide a filter cleaning notification after operating the drain pump (62). As a result, the dishwasher (1) may provide a notification for filter cleaning to the user. The dishwasher (1) can prompt the user to clean the filter by providing a notification for filter cleaning at an appropriate time. For example, the dishwasher (1) can provide the user with a visual and / or audible notification for filter cleaning via the user interface (120). This increases the usability of the dishwasher (1) and facilitates filter maintenance.

[0284] According to an exemplary embodiment of the present disclosure, a dishwasher may include: a tub; a water storage chamber configured to store water within the tub under the tub; a filter disposed within the water storage chamber and configured to filter water flowing into the water storage chamber; a drain pump configured to discharge water contained in the water storage chamber to the outside; and a control unit including at least one processor having a processing circuit. The control unit may be configured to control the drain pump based on the elapse of a specified soaking time after a water supply operation for supplying water to the water storage chamber or a spray operation for spraying water into the inside of the tub is terminated, and may perform a drain operation for discharging water contained in the water storage chamber to the outside.

[0285] The control unit may be configured to cause the dishwasher to perform the draining operation based on the elapse of the specified soaking time after the water supply operation or the spraying operation is completed in the last rinsing operation among the plurality of rinsing operations.

[0286] The dishwasher may further include a user interface configured to receive user input. The control unit may be configured to cause the dishwasher to perform the water supply operation or the spray operation based on obtaining a selection input of a filter soaking mode from a user through the user interface. The control unit may be configured to cause the dishwasher to perform the draining operation based on the elapse of the specified soaking time after the water supply operation or the spraying operation is completed.

[0287] The control unit may be configured to count the unused time from the last use of the dishwasher. The control unit may be configured to cause the dishwasher to perform the water supply operation or the spray operation based on the unused time elapsed by a predetermined reference time. The control unit may be configured to cause the dishwasher to perform the drain operation based on the elapsed time of the designated soaking time after the water supply operation or the spray operation is completed.

[0288] The dishwasher may further include a heater configured to heat water contained in the water storage chamber. The dishwasher may further include a circulation pump configured to pump water contained in the water storage chamber. The control unit may be configured to operate the heater and the circulation pump for a specified heating time during the specified soaking time.

[0289] The dishwasher may further include a circulation pump configured to pump water contained in the water storage chamber; a flow path configured to guide water pumped by the circulation pump to the water storage chamber; a valve configured to open or close the flow path; and a cleaning nozzle configured to communicate with the water storage chamber and spray water guided through the flow path toward the filter.

[0290] The control unit may be configured to operate the circulation pump and open the valve so that water is sprayed from the cleaning nozzle toward the filter for a specified cleaning time before operating the drain pump after the specified calling time has elapsed.

[0291] The dishwasher may further include a filter motor configured to rotate the filter. The control unit may be configured to operate the filter motor to rotate the filter before operating the drain pump after the specified soaking time has elapsed.

[0292] The control unit may be configured to stop the operation of the circulation pump, close the valve, and operate the drain pump based on the elapse of the specified cleaning time.

[0293] The above cleaning nozzle may be configured to spray water toward the outer surface of the filter, which is opposite to the inner surface of the filter where foreign substances are captured.

[0294] The above-mentioned flow path may be a first flow path, the valve may be a first valve, and the cleaning nozzle may be a first cleaning nozzle. The dishwasher may further include a second flow path that is distinct from the first flow path and configured to guide water pumped by the circulation pump to the water storage chamber; a second valve configured to open or close the second flow path; and a second cleaning nozzle that is in communication with the water storage chamber and configured to spray water guided through the second flow path toward the filter.

[0295] The first cleaning nozzle may include a first slit. The second cleaning nozzle may include a second slit positioned above at least a portion of the first slit.

[0296] The control unit may be configured to open one of the first valve and the second valve and close the other of the first valve and the second valve for a specified first cleaning time before operating the drain pump after the specified calling time has elapsed. The control unit may be configured to close one of the first valve and the second valve and open the other of the first valve and the second valve for a specified second cleaning time based on the elapsed first cleaning time.

[0297] The above-mentioned flow path may be a first flow path, and the above-mentioned valve may be a first valve. The dishwasher may further include a spray device configured to spray water toward a washing object disposed inside the tub; a distribution chamber partitioned from the water storage chamber, the distribution chamber including a second flow path configured to guide water pumped by the circulation pump to the spray device; and a second valve configured to open or close the second flow path. The control unit may be configured to open the first valve and close the second valve so as to perform the water supply operation or the spraying operation.

[0298] The dishwasher may further include a user interface including a circuit configured to display information about the dishwasher. The control unit may be configured to control the user interface to operate the drain pump and provide a filter cleaning notification based on the elapse of the specified soaking time.

[0299] According to one embodiment of the present disclosure, a dishwasher may include a tub, a water storage chamber configured to store water in the tub, a filter disposed inside the water storage chamber, a water supply valve, a drain pump, and a circulation pump. A control method of the dishwasher may include performing a water supply operation to supply water to the water storage chamber by controlling the water supply valve, or performing a spray operation to spray water stored in the water storage chamber into the tub by controlling the circulation pump. The control method of the dishwasher may include performing a drain operation to discharge water stored in the water storage chamber to the outside by controlling the drain pump based on a specified soaking time elapsed after the water supply operation or the spraying operation is completed.

[0300] The dishwasher may further include a channel configured to guide water pumped by the circulation pump to the water storage chamber; a valve configured to open or close the channel; and a cleaning nozzle configured to communicate with the water storage chamber and configured to spray water guided through the channel toward the filter. The control method of the dishwasher may further include cleaning the filter by controlling the circulation pump and opening the channel so that water is sprayed from the cleaning nozzle toward the filter for a specified cleaning time after the soaking time has elapsed.

[0301] The dishwasher may further include a filter motor configured to rotate the filter. Cleaning the filter may include operating the filter motor to rotate the filter for the designated cleaning time.

[0302] The dishwasher may further include a heater configured to heat water contained in the water storage chamber. The control method of the dishwasher may further include operating the heater and the circulation pump for a specified heating time during the specified soaking time.

[0303] The control method of the dishwasher may further include operating the drain pump to discharge water contained in the water storage chamber to the outside based on the elapse of the specified cleaning time.

[0304] Various exemplary embodiments may be implemented in the form of a storage medium storing computer-executable instructions. The instructions may be stored in the form of program code, and when executed by a processor, generate program modules to perform the operations of various embodiments.

[0305] A device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, the term "non-transitory storage medium" simply means a tangible device that does not contain signals (e.g., electromagnetic waves). This term does not distinguish between cases where data is permanently stored in the storage medium and cases where data is temporarily stored. For example, a "non-transitory storage medium" may include a buffer in which data is temporarily stored.

[0306] The methods according to various embodiments disclosed in this document may be provided as included in a computer program product. The computer program product may be traded as a product between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read-only memory (CD-ROM)), or may be distributed online (e.g., downloaded or uploaded) via an application store (e.g., Play Store™) or directly between two user devices (e.g., smartphones). In the case of online distribution, at least a portion of the computer program product (e.g., a downloadable app) may be temporarily stored or temporarily generated in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

[0307] According to the present disclosure, the usability of a dishwasher can be improved.

[0308] According to the present disclosure, the dishwasher can easily remove foreign substances attached to the filter by calling the filter.

[0309] According to the present disclosure, a dishwasher can automatically clean its filter. This can increase the lifespan and replacement cycle of the filter.

[0310] While the above has described various embodiments, they are not limited to the embodiments described above, and those skilled in the art will understand and recognize that various modifications are possible without departing from the scope of the appended claims and their equivalents. It will also be understood that any embodiment(s) described herein can be used in conjunction with any other embodiment(s) described herein.

Claims

1. Tub; A water storage chamber configured to store water within the tub under the tub; A filter disposed inside the water storage chamber and configured to filter water flowing into the water storage chamber; A drain pump configured to discharge water contained in the above water storage chamber to the outside; and A dishwasher comprising a control unit including at least one processor having a processing circuit, the control unit configured to control the drain pump based on the elapse of a specified soaking time after the water supply operation for supplying water to the water storage chamber or the spraying operation for spraying water into the inside of the tub is finished, and to perform a draining operation for discharging water contained in the water storage chamber to the outside.

2. In paragraph 1, The above control unit, After the water supply operation or the spray operation is completed in the last rinse operation among the plurality of rinse operations, the dishwasher performs the drain operation based on the elapse of the specified soaking time. Dishwasher that is configured.

3. In paragraph 1, further comprising a user interface for receiving user input; The above control unit, The dishwasher Performing the water supply operation or the spraying operation based on obtaining a selection input of a filter calling mode from a user through the user interface; After the above water supply operation or the above spraying operation is completed, based on the elapse of the specified calling time, the draining operation is performed. Dishwasher that is configured.

4. In paragraph 1, The above control unit, Counts the unused time from the last use of the dishwasher; The dishwasher Based on the non-use time elapsed after a predetermined reference time, the water supply operation or the spraying operation is performed; After the above water supply operation or the above spraying operation is completed, based on the elapse of the specified calling time, the draining operation is performed. Dishwasher that is configured.

5. In paragraph 1, a heater configured to heat water contained in the above water storage chamber; and Further comprising a circulation pump configured to pump water contained in the above water storage chamber; The above control unit, A dishwasher that operates the heater and the circulation pump for a specified heating time during the specified calling time.

6. In paragraph 1, A circulation pump configured to pump water contained in the above water storage chamber; A path configured to guide water pumped by the circulation pump to the water storage chamber; a valve configured to open or close the above-mentioned flow path; and A dishwasher further comprising a cleaning nozzle configured to communicate with the water storage chamber and spray water guided through the passage toward the filter.

7. In paragraph 6, The above control unit, A dishwasher that operates the circulation pump and opens the valve so that water is sprayed from the cleaning nozzle toward the filter for a specified cleaning time before operating the drain pump after the specified calling time has elapsed.

8. In paragraph 7, Further comprising a filter motor configured to rotate the filter; The above control unit, A dishwasher that operates the filter motor to rotate the filter before operating the drain pump after the specified calling time has elapsed.

9. In paragraph 7, The above control unit, A dishwasher that stops the operation of the circulation pump, closes the valve, and operates the drain pump based on the elapse of the above-mentioned specified cleaning time.

10. In paragraph 6, The above cleaning nozzle, A dishwasher configured to spray water toward the outer surface of the filter opposite to the inner surface of the filter where foreign substances are captured.

11. In paragraph 6, The above euro is the first euro, The above valve is the first valve, The above cleaning nozzle is a first cleaning nozzle, A second passage, which is distinct from the first passage and configured to guide water pumped by the circulation pump to the water storage chamber; a second valve configured to open or close the second flow path; and A dishwasher further comprising a second cleaning nozzle configured to communicate with the water storage chamber and to spray water guided through the second passage toward the filter.

12. In paragraph 11, The first cleaning nozzle includes a first slit, A dishwasher wherein the second cleaning nozzle comprises a second slit positioned above at least a portion of the first slit.

13. In paragraph 11, The above control unit, Before operating the drain pump after the above-mentioned calling time has elapsed, During the designated first cleaning time, open one of the first valve and the second valve, and close the other one of the first valve and the second valve, A dishwasher that closes one of the first valve and the second valve and opens the other of the first valve and the second valve for a specified second cleaning time based on the elapse of the specified first cleaning time.

14. In paragraph 6, The above euro is the first euro, The above valve is the first valve, A spray device configured to spray water toward objects to wash placed inside the tub; A distribution chamber partitioned from the above water storage chamber, the distribution chamber including a second passage configured to guide water pumped by the circulation pump to the injection device; and Further comprising a second valve configured to open or close the second euro; The above control unit, A dishwasher that opens the first valve and closes the second valve to perform the above-described water supply operation or the above-described spraying operation.

15. In paragraph 1, Further comprising a user interface comprising a circuit configured to display information about the dishwasher; The above control unit, A dishwasher that operates the drain pump and controls the user interface to provide a filter cleaning notification based on the elapse of the specified calling time.

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