Dishwasher

Abstract

This dishwasher comprises: a tub; a water storage chamber provided below the tub to store water; a filter that is disposed inside the water storage chamber and provided to filter water flowing into the water storage chamber; a circulation pump provided to pump the water stored in the water storage chamber; a guide pipe provided to guide, to the water storage chamber, the water pumped by the circulating pump; and a cleaning nozzle provided to spray, toward the filter, the water guided via the guide pipe. The cleaning nozzle includes an ejector that generates bubbles by using the water guided via the guide pipe.

Description

dishwasher

[0001] The present disclosure relates to a dishwasher having an improved structure.

[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] One aspect of the present disclosure provides a dishwasher with improved ease of use.

[0006] One aspect of the present disclosure provides a dishwasher having increased filter cleaning efficiency including an ejector.

[0007] One aspect of the present disclosure provides a dishwasher capable of automatically cleaning a filter by spraying water on the outer surface of the filter.

[0008] The technical problems to be achieved in this document are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0009] A dishwasher according to the invention comprises a tub, a water storage chamber configured to store water under the tub, a filter disposed inside the water storage chamber and configured to filter water flowing into the water storage chamber, a circulation pump configured to pump water contained in the water storage chamber, a guide pipe configured to guide water pumped by the circulation pump to the water storage chamber, and a cleaning nozzle configured to spray water guided through the guide pipe toward the filter. The cleaning nozzle includes an ejector configured to generate bubbles in water guided through the guide pipe.

[0010] A dishwasher according to the invention comprises a tub, a water storage chamber provided under the tub to store water in the tub and having a filter disposed therein, a circulation pump provided to pump water contained in the water storage chamber, a guide pipe provided to guide water pumped by the circulation pump to the water storage chamber, and a cleaning nozzle coupled to the guide pipe. The cleaning nozzle comprises an ejector connecting pipe provided to allow water guided through the guide pipe to flow in, an ejector including an air intake port provided to intake air from the outside of the cleaning nozzle, and an injection port communicated with the ejector and provided to inject water mixed with air intaked through the air intake port toward the filter.

[0011] FIG. 1 is a perspective view of a dishwasher according to one embodiment.

[0012] Figure 2 is a side cross-sectional view of a dishwasher according to one embodiment.

[0013] Figure 3 schematically illustrates the lower portion of a dishwasher according to one embodiment.

[0014] FIG. 4 illustrates a sump assembly of a dishwasher according to one embodiment.

[0015] Figure 5 shows the state in which the distribution cover and distribution disc are disassembled from the sump assembly of the dishwasher illustrated in Figure 4.

[0016] Figure 6 shows the filter assembly in the sump assembly of the dishwasher shown in Figure 4 in a disassembled state.

[0017] Figure 7 is a cross-sectional view taken along line A-A' shown in Figure 3.

[0018] Figure 8 is a cross-sectional view taken along line B-B' shown in Figure 3.

[0019] FIG. 9 illustrates a partial configuration of a dishwasher according to one embodiment.

[0020] Figure 10 illustrates some components of the dishwasher illustrated in Figure 9 from another direction.

[0021] Fig. 11 shows a part of the dishwasher shown in Fig. 9 from a different direction than Fig. 10.

[0022] Fig. 12 is a bottom view of a part of the dishwasher illustrated in Fig. 9.

[0023] Fig. 13 shows a state in which the circulation pump, drain pump, and guiding structure are disassembled in some configurations of the dishwasher shown in Fig. 9.

[0024] Fig. 14 shows a state in which the circulation pump, drain pump, and guiding structure are disassembled in some configurations of the dishwasher shown in Fig. 9.

[0025] Fig. 15 shows a state in which the circulation pump, drain pump, and guiding structure are disassembled in some configurations of the dishwasher shown in Fig. 9.

[0026] Fig. 16 schematically illustrates a filter cleaning structure of a dishwasher according to one embodiment.

[0027] Fig. 17 illustrates the filter cleaning structure of the dishwasher illustrated in Fig. 16 from another direction.

[0028] Fig. 18 illustrates a partial configuration of a dishwasher according to one embodiment.

[0029] Figure 19 shows a disassembled state of some components of the dishwasher illustrated in Figure 18.

[0030] FIG. 20 illustrates a cross-section of a first cleaning nozzle according to one embodiment.

[0031] FIG. 21 illustrates a cross-section of a second cleaning nozzle according to one embodiment.

[0032] It should be understood that the various embodiments and terms used in this document are not intended to limit the technical features described in this document to specific embodiments, but rather to include various modifications, equivalents, or substitutes of the embodiments.

[0033] In connection with the description of the drawings, similar reference numerals may be used for similar or related components.

[0034] 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.

[0035] In this document, 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 that phrase, or all possible combinations thereof.

[0036] The term "and / or" includes any combination of a plurality of related described elements or any one of a plurality of related described elements.

[0037] 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).

[0038] 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 means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0039] The terms "include" or "have" are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in this document, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0040] When a component is said to be “connected,” “coupled,” “supported,” or “in contact with” another component, this includes not only cases where the components are directly connected, coupled, supported, or in contact, but also cases where the components are indirectly connected, coupled, supported, or in contact through a third component.

[0041] When we say that a component is "on" another component, this includes not only cases where the component is in contact with the other component, but also cases where there is another component between the two components.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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).

[0046] Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings.

[0047] Fig. 1 is a perspective view of a dishwasher according to one embodiment. Fig. 2 is a side cross-sectional view of the dishwasher according to one embodiment.

[0048] 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).

[0049] A dishwasher (1) may include a tub (12) provided inside a main body (10). The tub (12) may form a washing room (10a). The tub (12) may be provided in a roughly 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.

[0050] 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.

[0051] The dishwasher (1) may include a machine room (10b) provided below the tub (12). At least a portion of a sump (70) to be described later may be arranged in the machine room (10b). The dishwasher (1) may include a base frame (16) forming the machine room (10b).

[0052] 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).

[0053] 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 load dishes. The storage container (50) may hold 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 items that can be washed within the washing room (10a). That is, the storage container (50) may accommodate various objects to be washed.

[0054] 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.

[0055] 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.

[0056] 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).

[0057] 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).

[0058] 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).

[0059] 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.

[0060] 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).

[0061] The dishwasher (1) may include a spray device (40) configured to spray water. The spray device (40) may be configured to spray water into the inside of the tub (12). The spray device (40) may be configured to spray water into the washing chamber (10a). The spray device (40) may be configured to spray water toward objects to be washed placed inside the tub (12). The spray device (40) may be configured to spray water toward dishes stored in a storage container (50). The spray device (40) may receive water from a sump (70) described below and / or a duct (20) described below.

[0062] Meanwhile, in this document, water may mean both water mixed with detergent (and / or rinse) and water not mixed with detergent (and / or rinse).

[0063] 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).

[0064] 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).

[0065] 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.

[0066] 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).

[0067] 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 bottom (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.

[0068] 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 bottom (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 bottom (12b) of the tub (12) and smoothly flow into the sump (70).

[0069] 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.

[0070] 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).

[0071] 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).

[0072] 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).

[0073] FIG. 3 schematically illustrates a lower portion of a dishwasher according to one embodiment. FIG. 4 illustrates a sump assembly of a dishwasher according to one embodiment. FIG. 5 illustrates a state in which a distribution cover and a distribution disc are disassembled from the sump assembly of the dishwasher illustrated in FIG. 4. FIG. 6 illustrates a state in which a filter assembly is disassembled from the sump assembly of the dishwasher illustrated in FIG. 4. FIG. 7 is a side cross-sectional view taken along line A-A' of FIG. 3. FIG. 8 is a side cross-sectional view taken along line B-B' of FIG. 3.

[0074] Referring to FIGS. 3 to 8, 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 the components coupled to the sump (70) may be referred to as a sump assembly.

[0075] The sump (70) may include a sump housing (71). The sump housing (71) may be detachably coupled to the bottom (12b) of the tub (12). Most of the sump housing (71) may be placed in the machine room (10b).

[0076] The sump housing (71) may include a water storage chamber (711) and a water storage chamber housing (7110) forming the 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 bottom (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 portion (715). The water storage chamber (711) may have a shape for containing water. The water storage chamber (711) may have a shape with an open top. The water storage chamber (711) may have a shape that is concave downward.

[0077] The sump housing (71) may include a distribution chamber (712) and a distribution chamber housing (7120) forming the distribution chamber. The distribution chamber (712) may be partitioned from the water storage chamber (711). The distribution chamber (712) may be provided to receive water. The distribution chamber (712) may receive water pumped by the circulation pump (61). The distribution chamber (712) may receive water supplied 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) to be described later. The distribution chamber (712) may include a flow path (712f) provided to guide water pumped by the circulation pump (61) to the spray device (40). Hereinafter, the euro (712f) may also be referred to as the third euro (712f) to distinguish it from the first euro (991) and the second euro (992) described later. In addition, the first euro (991), the second euro (992), and the third euro (712f) are not limited by the ordinal numbers "first," "second," and "third" as described above.

[0078] The sump housing (71) may include a chamber inlet (7121). The chamber inlet (7121) may be formed on the lower surface of the distribution chamber housing (7120). The chamber inlet (7121) may be in communication with the distribution chamber (712). The chamber inlet (7121) may extend downward from the distribution chamber (712). 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 a connector (91) and the chamber inlet (7121) described below. The flow path (or space) formed within 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 the chamber outlet (731, 732, and / or 733) described below.

[0079] 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.

[0080] The sump housing (71) may include a circulation pump coupling portion (713) to which a circulation pump (61) is coupled. The circulation pump coupling portion (713) may be formed on a side wall of the water storage chamber housing (7110). The circulation pump coupling portion (713) may be in communication with the water storage chamber (711). Water in the water storage chamber (711) may flow toward the circulation pump (61) through the circulation pump coupling portion (713). For example, the sump (70) may include a flow guide (713a) provided to guide water in the water storage chamber (711) to flow toward the circulation pump (61). For example, the flow guide (713a) may be disposed on the bottom surface of the water storage chamber (711). For example, the flow guide (713a) may be provided around the circulation pump coupling portion (713). For example, the flow guide (713a) is provided in the shape of a curved tube so that water flowing through the circulation pump (61) can be circulated evenly without causing turbulence.

[0081] The sump housing (71) may include a drain pump coupling portion (714) to which a drain pump (62) is connected. The drain pump coupling portion (714) may be formed on a side wall of the reservoir chamber housing (7110). The drain pump coupling portion (714) may be in communication with the reservoir chamber (711). Water and foreign substances within the reservoir chamber (711) may flow toward the drain pump (62) through the drain pump coupling portion (714).

[0082] 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).

[0083] Meanwhile, 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).

[0084] 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 with the motor shaft (351) of the distribution motor (721). A second end of the distribution shaft (722) may be coupled with the distribution disc (723). 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).

[0085] 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).

[0086] 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).

[0087] 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 provided to cover the distribution chamber housing (7120). The distribution cover (73) may be detachably coupled to the distribution chamber housing (7120). For example, the distribution cover (73) may be rotatably coupled to the distribution chamber housing (7120).

[0088] 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).

[0089] 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.

[0090] In the drawing, the distribution cover (73) is depicted as a separate component from the distribution chamber housing (7120). However, the present disclosure is not limited to the drawing. Unlike the drawing, the distribution cover (73) and the distribution chamber housing (7120) may be formed integrally. The distribution cover (73) may be provided as a component of the distribution chamber housing (7120).

[0091] 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).

[0092] 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 that has passed through the second filter (320) and / or the third filter (330), which will be described later. 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 micro filter. 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).

[0093] 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).

[0094] For example, the first filter (310) may include a roughly hollow cylindrical shape. For example, the first filter (310) may partition the water storage chamber (711) into an inner space (711a) of the water storage chamber (711) and an outer space (711b) of the water storage chamber (711). 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).

[0095] The first filter (310) may be provided to be rotatable within the water storage chamber (710). The first filter (310) may be rotated by a filter motor (350) to be described later. As the first filter (310) rotates by the filter motor (350) during cleaning of the first filter (310), the cleaning efficiency of the first filter (310) may be increased. A detailed description thereof will be described later.

[0096] The filter assembly (30) may include a second filter (320). At least a portion of the second filter (320) may be disposed within the water storage chamber (711). At least a portion of the second filter (32) may be disposed within the inner space (711a) of the water storage 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 water storage chamber (711), another portion of the second filter (320) may be disposed within the tub (12). The second filter (320) is detachably mountable to the sump housing (71).

[0097] 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).

[0098] 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 bottom (12b) of the tub (12).

[0099] 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).

[0100] For example, the third filter (330) may include a filter body (331). The filter body (331) may have a substantially plate shape. At least a portion of the filter body (331) may be disposed above an inclined surface (71a) of the sump housing (71), which is provided to be inclined downward toward the water storage chamber (711). One side (331a) of the filter body (331) may be placed on a mounting portion (83) of the support plate (80). One side (331a) of the filter body (331) may be mounted on the mounting portion (83) of the support plate (80).

[0101] For example, the filter body (331) may include a material and / or shape for filtering foreign substances contained in water. The filter body (331) may be designed to filter out foreign substances and allow water to pass through. Water passing through the filter body (331) may flow along the inclined surface (71a) of the sump housing (71) and flow into the water storage chamber (711). For example, water passing through the filter body (331) may flow along the inclined surface (71a) of the sump housing (71) and flow into the outer space (711b) of the water storage chamber (711). For example, water flowing into the outer space (711b) of the water storage chamber (711) may be pumped by the pump (60) without undergoing an additional filtration process.

[0102] For example, the third filter (330) may include a filter hole (331a) provided on the filter body (331). A plurality of filter holes (331a) may be provided. For example, the filter hole (331a) may be provided in a circular shape. The filter hole (331a) may be provided in a size that allows foreign substances to be filtered out and water to pass through.

[0103] For example, the third filter (330) may include a filter hole (332). The filter hole (332) may be formed by penetrating the filter body (331). A second filter (320) may be inserted into the filter hole (332). Water passing through the filter hole (332) may flow into the water storage chamber (711). For example, water passing through the filter hole (332) may flow into the inner space (711a) of the water storage chamber (711). For example, water flowing into the inner space (711a) of the water storage chamber (711) may be additionally filtered by the second filter (320) and the first filter (310) and then pumped by the pump (60).

[0104] 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.

[0105] 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 relatively large-sized foreign matter lumps from entering 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).

[0106] 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).

[0107] The filter assembly (30) may include a motor cover (360). The motor cover (360) may be provided to cover the filter motor (350) to prevent 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).

[0108] 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) to be described later. 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).

[0109] 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).

[0110] 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 the connecting shaft (370) inserted into the hollow portion (320a) of the second filter (320) from being separated from the hollow portion (320a) of the second filter (320).

[0111] 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).

[0112] The dishwasher (1) may include a sealing member (300). The sealing member (300) may prevent 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.

[0113] 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 (331a) of the third filter (330). The support plate (80) may be provided to support a portion of the edge 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).

[0114] 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.

[0115] 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).

[0116] The support plate (80) may include a mounting portion (83). The mounting portion (83) may be provided to support one side (331a) 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).

[0117] 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 into a distribution chamber (712) or may be circulated and flow into the water storage chamber (711). A detailed description thereof will be provided later. The circulation pump (61) may be arranged in a machine room (10b, see FIG. 2).

[0118] The circulation pump (61) may include a circulation pump inlet (611) and a circulation pump outlet (612). Water contained in the water storage chamber (711) may be introduced into the circulation pump (61) through the circulation pump inlet (611). Water inside the circulation pump (61) may be discharged through the circulation pump outlet (612, see FIG. 10).

[0119] 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).

[0120] FIG. 9 illustrates a part of a dishwasher according to one embodiment. FIG. 10 illustrates a part of the dishwasher illustrated in FIG. 9 from a different direction. FIG. 11 illustrates a part of the dishwasher illustrated in FIG. 9 from a different direction than FIG. 10. FIG. 12 is a bottom view of a part of the dishwasher illustrated in FIG. 9. FIG. 13 illustrates a state in which a circulation pump, a drain pump, and a flow path structure are disassembled in a part of the dishwasher illustrated in FIG. 9. FIG. 14 illustrates a state in which a circulation pump, a drain pump, and a flow path structure are disassembled in a part of the dishwasher illustrated in FIG. 9. FIG. 15 illustrates a state in which a circulation pump, a drain pump, and a flow path structure are disassembled in a part of the dishwasher illustrated in FIG. 9.

[0121] Referring to FIGS. 9 to 15, 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 provided to guide water pumped by the circulation pump (61) to a distribution chamber (712) or to a connecting pipe (92) to be described later. The connector (91) may be provided to guide water flowing out of the circulation pump (61) to a distribution chamber (712) or to a connecting pipe (92) to be described later.

[0122] The connector (91) may include a connector inlet (911). The inlet (911) of the connector (91) may be detachably coupled to a circulation pump outlet (612). The connector inlet (911) of the connector (91) may be connected to the circulation pump outlet (612). The connector inlet (911) of the connector (91) may be provided so that water pumped by the circulation pump (61) may be introduced. Water flowing out from the circulation pump outlet (612) may flow into the connector inlet (911) of the connector (91). The connector inlet (911) may be referred to as an inlet (911).

[0123] 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). The first connector outlet (912) may be in communication with the distribution chamber (712) so that water pumped by the circulation pump (61) may be discharged into the distribution chamber (712). 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).

[0124] 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) to be described later. The second connector outlet (913) of the connector (91) may be connected to the connecting pipe (92). The second connector outlet (913) may be in communication with the connecting pipe (92) so that water pumped by the circulation pump (61) may be discharged into the connecting pipe (92). Water flowing into the connector inlet (911) may flow into the connecting pipe (92) through the second connector outlet (913). As will be described later, a flow path formed between the connector inlet (911) and the second connector outlet (913) may be a part of a first flow path (991). As will be described later, the flow path formed between the connector inlet (911) and the second connector outlet (913) may be part of the second flow path (992). The second connector outlet (913) may be referred to as an outlet (913).

[0125] 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 positioned closer to the connector inlet (911) than to the first connector outlet (912). Through this configuration, it is possible to minimize the loss of water pressure that may occur when water pumped by the circulation pump (61) moves along the connector (91). In addition, it is possible to minimize the loss of water pressure of water sprayed through the cleaning nozzle (95 and / or 96) described below.

[0126] 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) to be described later. 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) to be described later. The connecting pipe (92) may guide water flowing out from the connector (91) to the second guide pipe (96).

[0127] 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).

[0128] The first connecting portion (921) can be connected to the connector (91). The first connecting portion (921) can be detachably coupled to the second connector outlet (913) of the connector (91). The first connecting portion (921) can be connected to the second connector outlet (913) of the connector (91). The first connecting portion (921) can receive water from the connector (91).

[0129] A first flow valve (94), which will be described later, can be detachably connected to the second connection portion (922). The second connection portion (922) can be connected to the first connection portion (921). The second connection portion (922) can be connected to the third connection portion (923).

[0130] 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).

[0131] Water flowing into the first connection part (921) can flow through the second connection part (922) and the third connection part (923) to the first guide pipe (93). As will be described later, the flow path formed between the second connection part (922) and the third connection part (923), or the flow path formed by the first guide pipe (93), may be part of the first flow path (991).

[0132] A second flow valve (97), which will be described later, can be detachably connected to the fourth connection portion (924). The fourth connection portion (924) can be connected to the first connection portion (921). The fourth connection portion (924) can be connected to the fifth connection portion (925).

[0133] 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).

[0134] Water flowing into the first connection (921) can flow into the second guide pipe (96) through the fourth connection (924) and the fifth connection (925). As will be described later, the flow path formed between the fourth connection (924) and the fifth connection (925) or the flow path formed by the second guide pipe (96) may be part of the second flow path (992).

[0135] Water flowing into the first connection (921) can flow into the first guide pipe (93) through the second connection (922) and the third connection (923), or can flow into the second guide pipe (96) through the fourth connection (924) and the fifth connection (925). That is, water flowing into the first connection (921) can be guided through the first flow path (991) or the second flow path (992). In other words, the connection pipe (92) can branch into the first flow path (991) and the second flow path (992).

[0136] The first connecting portion (921), the second connecting portion (922), the third connecting portion (923), the fourth connecting portion (924), and the fifth connecting portion (925) are not limited by the ordinal numbers “first,” “second,” “third,” “fourth,” and “fifth” as described above. For example, the first connecting portion (921), the second connecting portion (922), the third connecting portion (923), the fourth connecting portion (924), and the fifth connecting portion (925) may each be referred to as connecting portion (921), connecting portion (922), connecting portion (923), connecting portion (924), and connecting portion (925). For example, the first connection portion (921) may be referred to as the second connection portion (921), and the second connection portion (922) may be referred to as the first connection portion (922).

[0137] 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).

[0138] The dishwasher (1) may include a first guide pipe (93). The first guide pipe (93) may be provided to guide water pumped by the circulation pump (61) to a water storage chamber (711). The first guide pipe (93) may supply the water pumped by the circulation pump (61) to a first cleaning nozzle (95) to be described later. The first guide pipe (93) may be provided 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).

[0139] The dishwasher (1) may include a first flow valve (94). The first flow valve (94) may be configured to open and close a connecting pipe (92). For example, the first flow valve (94) may be configured to block water from flowing from a second connection (922) to a third connection (923).

[0140] The first flow valve (94) may be provided to open or close the first flow path (991) for guiding water pumped by the circulation pump (61) to the storage chamber (711). The first flow path valve (94) may be provided to open or close the first flow path (991) through which water pumped by the circulation pump (61) passes through the first guide pipe (93) and moves to the storage chamber (711). The first flow path (991) may include a flow path extending from the circulation pump (61) to the storage chamber (711). The first flow path (991) may include a flow path extending from the pump outlet (612) of the circulation pump (61) to the 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).

[0141] 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.

[0142] Meanwhile, 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 water from flowing through the first flow path (991) or reducing the flow rate of water flowing through the first flow path (991).

[0143] 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 on a first flow path (991). The first cleaning nozzle (95) may be provided to spray water guided through the first flow path (991) toward the first filter (310). The first cleaning nozzle (95) may be provided to spray water guided through the first guide pipe (93) toward the first filter (310). For example, the first cleaning nozzle (95) may spray water 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.

[0144] For example, the first cleaning nozzle (95) may include a first nozzle body (951) in which a first injection port (951a) is formed. For example, the first cleaning nozzle (95) may include a first ejector (952). This will be described in detail later.

[0145] The first cleaning nozzle (95) can be detachably coupled to the sump (70). For example, the first cleaning nozzle (95) can be coupled to the water storage chamber housing (7110). For example, the first cleaning nozzle (95) can be mounted on a first nozzle mounting portion (716) formed on the water storage chamber housing (7110). For example, the first nozzle body (951) of the first cleaning nozzle (95) can be disposed on a side wall of the water storage chamber housing (7110). 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 second coupling portion (953) coupleable to the first coupling portion (7162). For example, the first coupling portion (7162) and the second coupling portion (953) each include coupling holes, 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 (953). 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.

[0146] 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.

[0147] 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 be provided to guide water pumped by the circulation pump (61) to a storage chamber (711). The second guide pipe (96) may supply the water pumped by the circulation pump (61) to a second cleaning nozzle (98) to be described later. 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).

[0148] The dishwasher (1) may include a second flow valve (97). The second flow valve (97) may be configured to open and close the connecting pipe (92). For example, the second flow valve (97) may be configured to block water from flowing from the fourth connection (924) to the fifth connection (925).

[0149] The second flow valve (97) may be provided to open or close a second flow path (992) for guiding water pumped by the circulation pump (61) to the storage chamber (711). The second flow path valve (97) may be provided to open or close a second flow path (992) through which water pumped by the circulation pump (61) passes through the second guide pipe (96) and moves to the 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 storage chamber (711). The second flow path (992) may include a flow path extending from the pump outlet (612) of the circulation pump (61) to the 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).

[0150] 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.

[0151] Meanwhile, 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 water from flowing through the second flow path (992) or reducing the flow rate of water flowing through the second flow path (992).

[0152] 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 on a second passage (992). The second cleaning nozzle (98) may be provided to spray water guided through the second passage (992) toward the first filter (310). The second cleaning nozzle (98) may be provided to spray water guided through the second guide pipe (96) toward the first filter (310). For example, the second cleaning nozzle (98) may spray water 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.

[0153] For example, the second cleaning nozzle (98) may include a second nozzle body (981) in which a second injection port (981a) is formed. For example, the second cleaning nozzle (98) may include a second ejector (982). This will be described in detail later.

[0154] The second cleaning nozzle (98) can be detachably coupled to the sump (70). For example, the second cleaning nozzle (98) can be coupled to the water storage chamber housing (7110). For example, the second cleaning nozzle (98) can be mounted to a second nozzle mounting portion (717) formed in the water storage chamber housing (7110). 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 fourth coupling portion (983) coupleable to the third coupling portion (7172). For example, the third coupling portion (7172) and the fourth coupling portion (983) each include coupling holes, and a screw can be fastened to the coupling hole of the third coupling portion (7172) and the coupling hole of the fourth coupling portion (983). However, the present disclosure is not limited to the above-described example, and the second cleaning nozzle (98) can be coupled to the sump (70) using various known coupling methods.

[0155] 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.

[0156] 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 to be understood 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.

[0157] Fig. 16 schematically illustrates a filter cleaning structure of a dishwasher according to one embodiment. Fig. 17 illustrates the filter cleaning structure of the dishwasher illustrated in Fig. 16 from another direction. Fig. 18 illustrates a partial configuration of a dishwasher according to one embodiment. Fig. 19 illustrates an exploded view of a partial configuration of the dishwasher illustrated in Fig. 18. Fig. 20 illustrates a cross-section of a first cleaning nozzle according to one embodiment. Fig. 21 illustrates a cross-section of a second cleaning nozzle according to one embodiment.

[0158] Referring to FIGS. 16 to 21, 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). That is, 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). In this way, the cleaning efficiency of the first filter (310) can be increased.

[0159] The first cleaning nozzle (95) may include a first nozzle body (951). For example, the first nozzle body (951) may include a shape corresponding to the first sump opening (7161, see FIG. 14).

[0160] The first cleaning nozzle (95) may include a first spray port (951a) configured to spray water. For example, the first spray port (951a) may include a slit shape. For example, the first spray port (951a) may include a slit shape extending in a vertical direction. For example, the first spray port (951a) may include a slit shape extending approximately along a vertical direction (Z direction). For example, the first spray port (951a) may be referred to as a first slit (951a).

[0161] The first injection port (951a) may be formed on the first nozzle body (951). For example, the first injection port (951a) may be provided at the center of the first nozzle body (951). For example, the first injection port (951a) may extend from the upper end of the first nozzle body (951) toward the lower end of the first nozzle body (951).

[0162] For example, the first injection port (951a) may have a width greater than the diameter of the filter hole (331a). For example, the width of the first injection port (951a) may be 1.2 mm, and the diameter of the filter hole (331a) may be 1 mm. Accordingly, the first injection port (951a) may not be blocked by foreign substances that have passed through the filter hole (331a) and may allow the foreign substances to pass through. Accordingly, even if the foreign substances that pass through the third filter (330) and enter the water storage chamber (711) are pumped together with water by the circulation pump (61) and guided to the first injection port (951a), the foreign substances may pass through the first injection port (951a) and enter the water storage chamber (711) again. That is, since the first injection port (951a) has a width greater than the diameter of the filter hole (331a), the first injection port (951a) can be prevented from being blocked by foreign substances that have passed through the third filter (330).

[0163] The first cleaning nozzle (95) may include a first ejector (952). The first ejector (952) may be connected to the first nozzle body (951). The first ejector (952) may be in communication with the first injection port (951a). The first ejector (952) may be connected to the first guide pipe (93).

[0164] The first ejector (952) can generate bubbles with water. For example, the first ejector (952) can generate bubbles with water guided through the first flow path (991). For example, the first ejector (952) can generate bubbles with water guided through the first guide pipe (93). For example, the first ejector (952) can generate microbubbles.

[0165] The first ejector (952) may include a first ejector connecting pipe (9521). The first ejector connecting pipe (9521) may be configured to allow water guided through the first flow path (991) to flow in. The first ejector connecting pipe (9521) may be configured to allow water guided through the first guide pipe (93) to flow in. The first ejector connecting pipe (9521) may be connected to the first guide pipe (93) so that water flows in from the first guide pipe (93). For example, one end of the first ejector connecting pipe (9521) may be communicated with the first guide pipe (93). For example, the other end of the first ejector connecting pipe (9521) may be communicated with a first ejector extension pipe (9523) to be described later. For example, the other end of the first ejector connecting tube (9521) may be provided on the inside of the first ejector extension tube (9523).

[0166] The first ejector (952) may include a first air intake port (9522). The first air intake port (9522) may be configured to intake air from the outside of the first cleaning nozzle (95). The first air intake port (9522) may be configured to intake air from the outside of the first ejector (952). For example, the first air intake port (9522) may extend in a direction substantially intersecting the direction in which the first ejector connecting tube (9521) extends. For example, the first air intake port (9522) may be configured closer to the other end of the first ejector connecting tube (9521) than to one end of the first ejector connecting tube (9521). For example, one end of the first air intake port (9522) may be in communication with the outside of the first cleaning nozzle (95). For example, the other end of the first air intake (9522) may be connected to the first ejector extension pipe (9523) described later.

[0167] For example, water guided through the first flow path (991) may flow into the first ejector connection pipe (9521). For example, water guided through the first guide pipe (93) may flow into the first ejector connection pipe (9521). For example, water introduced through one end of the first ejector connection pipe (9521) may flow out the other end of the first ejector connection pipe (9521). At this time, due to the high flow rate of water flowing out of the other end of the first ejector connection pipe (9521), the pressure near the other end of the first ejector connection pipe (9521) may drop. At this time, the pressure near the other end of the first ejector connection pipe (9521) may be lower than the external pressure of the first ejector (952). Since the fluid moves from a place of high pressure to a place of low pressure, the external air of the first ejector (952) can be sucked into the first ejector (952) through the first air intake (9522).

[0168] The first ejector (952) may include a first ejector extension pipe (9523). The first ejector extension pipe (9523) may extend from the first nozzle body (951) toward the first guide pipe (93). For example, one end of the first ejector extension pipe (9523) may be in communication with the first injection port (951a). For example, one end of the first ejector extension pipe (9523) may be provided in an approximately fan shape. For example, the other end of the first ejector extension pipe (9523) may be in communication with the first ejector connection pipe (9521). For example, the other end of the first ejector extension pipe (9523) may be in communication with the first air intake port (9522).

[0169] In the first ejector extension pipe (9523), water introduced from the first guide pipe (93) and air introduced from the first air intake port (9522) can be mixed. For example, water introduced from the first guide pipe (93) and air introduced from the first air intake port (9522) can be mixed to generate bubbles. Accordingly, the first injection port (951a) can spray water mixed with air introduced through the first air intake port (9522) toward the first filter (310). Accordingly, the first injection port (951a) can spray bubbles toward the first filter (310). For example, bubbles produced by mixing air and water can increase the spraying area of ​​the first injection port (951a). For example, bubbles produced by mixing air and water can have a relatively high pressure. Accordingly, the cleaning efficiency of the first filter (310) can be increased.

[0170] The second cleaning nozzle (98) 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 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.

[0171] The second cleaning nozzle (98) may include a second nozzle body (981). For example, the second nozzle body (981) may include a shape corresponding to the second sump opening (7171, see FIG. 13).

[0172] The second cleaning nozzle (98) may include a second injection port (981a) configured to spray water. For example, the second injection port (981a) may include a slit shape. For example, the second injection port (981a) may include a slit shape extending in a vertical direction. For example, the second injection port (981a) may include a slit shape extending approximately along a vertical direction (Z direction). For example, the second injection port (981a) may be referred to as a second slit (981a).

[0173] The second injection port (981a) may be formed on the second nozzle body (981). For example, the second injection port (981a) may be provided at the center of the second nozzle body (981). For example, the second injection port (981a) may extend from the upper end of the second nozzle body (981) toward the center of the second nozzle body (981). For example, the second injection port (981a) may be provided above the flow guide (713a). This can prevent water sprayed from the second injection port (981a) from being blocked by the flow guide (713a).

[0174] For example, the second injection port (981a) may have a width greater than the diameter of the filter hole (331a). For example, the width of the second injection port (981a) may be 1.2 mm, and the diameter of the filter hole (331a) may be 1 mm. Accordingly, the second injection port (981a) may allow foreign substances to pass through the filter hole (331a) without being blocked by the foreign substances. Accordingly, even if the foreign substances that pass through the third filter (330) and enter the storage chamber (711) are pumped together with water by the circulation pump (61) and guided to the second injection port (981a), the foreign substances may pass through the second injection port (981a) and enter the storage chamber (711) again. That is, since the second nozzle (981a) has a width greater than the diameter of the filter hole (331a), the second nozzle (981a) can be prevented from being blocked by foreign substances that have passed through the third filter (330).

[0175] The second cleaning nozzle (98) may include a second ejector (982). The second ejector (982) may be connected to the second nozzle body (981). The second ejector (982) may be in communication with the second injection port (981a). The second ejector (982) may be connected to the second guide pipe (96).

[0176] The second ejector (982) can generate bubbles with water. For example, the second ejector (982) can generate bubbles with water guided through the second flow path (992). For example, the second ejector (982) can generate bubbles with water guided through the second guide pipe (96). For example, the second ejector (982) can generate microbubbles.

[0177] The second ejector (982) may include a second ejector connecting pipe (9821). The second ejector connecting pipe (9821) may be configured to allow water guided through the second flow path (992) to flow in. The second ejector connecting pipe (9821) may be configured to allow water guided through the second guide pipe (96) to flow in. The second ejector connecting pipe (9821) may be connected to the second guide pipe (96) so that water flows in from the second guide pipe (96). For example, one end of the second ejector connecting pipe (9821) may be communicated with the second guide pipe (96). For example, the other end of the second ejector connecting pipe (9821) may be communicated with a second ejector extension pipe (9823) to be described later. For example, the other end of the second ejector connecting tube (9821) may be provided on the inside of the second ejector extension tube (9823).

[0178] The second ejector (982) may include a second air intake port (9822). The second air intake port (9822) may be configured to intake air from the outside of the second cleaning nozzle (98). The second air intake port (9822) may be configured to intake air from the outside of the second ejector (982). For example, the second air intake port (9822) may extend in a direction substantially intersecting with the direction in which the second ejector connecting tube (9821) extends. For example, the second air intake port (9822) may be configured closer to the other end of the second ejector connecting tube (9821) than to one end of the second ejector connecting tube (9821). For example, one end of the second air intake port (9822) may be in communication with the outside of the second cleaning nozzle (98). For example, the other end of the second air intake (9822) may be connected to a second ejector extension pipe (9823) to be described later.

[0179] For example, water guided through the second flow path (992) may flow into the second ejector connection pipe (9821). For example, water guided through the second guide pipe (96) may flow into the second ejector connection pipe (9821). For example, water introduced through one end of the second ejector connection pipe (9821) may flow out the other end of the second ejector connection pipe (9821). At this time, due to the high flow rate of water flowing out of the other end of the second ejector connection pipe (9821), the pressure near the other end of the second ejector connection pipe (9821) may drop. At this time, the pressure near the other end of the second ejector connection pipe (9821) may be lower than the external pressure of the second ejector (982). Since the fluid moves from a place of high pressure to a place of low pressure, the external air of the second ejector (982) can be sucked into the second ejector (982) through the second air intake (9822).

[0180] The second ejector (982) may include a second ejector extension pipe (9823). The second ejector extension pipe (9823) may extend from the second nozzle body (981) toward the second guide pipe (96). For example, one end of the second ejector extension pipe (9823) may be in communication with the second injection port (981a). For example, one end of the second ejector extension pipe (9823) may be provided in an approximately fan shape. For example, the other end of the second ejector extension pipe (9823) may be in communication with the second ejector connection pipe (9821). For example, the other end of the second ejector extension pipe (9823) may be in communication with the second air intake port (9822).

[0181] In the second ejector extension pipe (9823), water introduced from the second guide pipe (96) and air sucked in from the second air intake port (9822) can be mixed. For example, water introduced from the second guide pipe (96) and air sucked in from the second air intake port (9822) can be mixed to generate bubbles. Accordingly, the second injection port (981a) can spray water mixed with air sucked in through the second air intake port (9822) toward the first filter (310). Accordingly, the second injection port (981a) can spray bubbles toward the first filter (310). For example, bubbles created by mixing air and water can increase the spraying area of ​​the second injection port (981a). For example, bubbles created by mixing air and water can have a relatively high pressure. Accordingly, the cleaning efficiency of the first filter (310) can be increased.

[0182] 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). 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 water storage chamber housing (7110). The first cleaning nozzle (95) and the second cleaning nozzle (98) may be arranged so as not to interfere with each other.

[0183] 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).

[0184] 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 (981a) of the second cleaning nozzle (98) may be arranged above at least a portion of the first injection port (951a) of the first cleaning nozzle (95). For example, the lower portion of the second injection port (981a) may be arranged above the lower portion of the first injection port (951a). For example, the upper portion of the second injection port (981a) may be arranged above the upper portion of the first injection port (951a). For example, the lower end of the second nozzle (981a) may be positioned lower than the upper end of the first nozzle (951a), higher than the upper end of the first nozzle (951a), or at approximately the same height as the upper end of the first nozzle (951a). However, this is merely exemplary, and it is to be understood that each of the first cleaning nozzle (95) and the second cleaning nozzle (98) may spray water in various directions to clean the first filter (310).

[0185] For example, the first injection port (951a) of the first cleaning nozzle (95) and the second injection port (981a) 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 (951a) of the first cleaning nozzle (95) and the second injection port (981a) of the second cleaning nozzle (98) may be arranged to face the rotational axis of the first filter (310).

[0186] For example, the first injection port (951a) of the first cleaning nozzle (95) may include a slit extending in the vertical direction. For example, the second injection port (981a) of the second cleaning nozzle (98) may include a slit extending in the vertical direction. For example, at least one of the first injection port (951a) of the first cleaning nozzle (95) and the second injection port (981a) of the second cleaning nozzle (98) may include a slit extending in the vertical direction. However, the present disclosure is not limited to the examples described above. For example, the first injection port (951a) may include a shape extending approximately along the circumferential direction of the first filter (310). For example, the second injection port (981a) may include a shape extending approximately along the circumferential direction of the first filter (310). For example, the extension length of the first nozzle (951a) and the extension length of the second nozzle (981a) may be the same or different. For example, at least one of the first nozzle (951a) or the second nozzle (981a) may include various shapes such as a straight line, a curve, a circle, or a polygon.

[0187] For example, the first cleaning nozzle (95) may include one first injection port (951a) or may include a plurality of first injection ports (951a). For example, the plurality of first injection ports (951a) may be configured with a plurality of holes. When the first cleaning nozzle (955) includes a plurality of first injection ports (951a), the shapes of each of the plurality of first injection ports (951a) may be configured to be the same or different. When the first cleaning nozzle (955) includes a plurality of first injection ports (951a), the shapes of some of the plurality of first injection ports (951a) may be configured to be different from the shapes of other some of the first injection ports (951a).

[0188] For example, the second cleaning nozzle (98) may include one second injection port (981a) or may include a plurality of second injection ports (981a). For example, the plurality of second injection ports (981a) may be configured with a plurality of holes. When the second cleaning nozzle (98) includes a plurality of second injection ports (981a), the shapes of each of the plurality of second injection ports (981a) may be configured to be the same or different. When the second cleaning nozzle (988) includes a plurality of second injection ports (981a), the shapes of some of the plurality of second injection ports (981a) may be configured to be different from the shapes of other some of the second injection ports (981a).

[0189] 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.

[0190] 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.

[0191] 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). The additional cleaning nozzle may be positioned so as not to interfere with the first cleaning nozzle (95) and the second cleaning nozzle (98). 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).

[0192] Referring to FIGS. 9 to 21, an example in which water stored in a storage chamber (711) of a sump (70) flows into a distribution chamber (712) will be described.

[0193] The first flow valve (94) can close the first flow path (991). The second flow valve (97) can close the second flow path (992). The distribution valve (72) can open the third flow path (712f). As a result, 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 pass through the connector (91) and flow into the distribution chamber (712). The water pumped by the circulation pump (61) can pass through the connector inlet (911) and the second connector outlet (912) and flow into the distribution chamber (712) through the chamber inlet (7121). The water in the distribution chamber (712) can pass through the distribution cover (73) and be supplied to the spray device (40). The spray device (40) can spray water supplied from the sump (70) into the tub (12). Through the above-described process, the washing cycle or the rinsing cycle of the dishwasher (1) can be performed. The washing cycle may include an operation of spraying water into the tub (12) to wash an object to be washed (e.g., dishes). For example, the water used in the washing cycle may be water mixed with detergent and / or rinse. The rinsing cycle may include an operation of spraying water to rinse an object to be washed (e.g., dishes) that has been washed. For example, the water used in the rinsing cycle may be water not mixed with detergent and / or rinse.

[0194] Referring to FIGS. 9 to 21, an example in which water stored in a storage chamber (711) of a sump (70) is supplied back to the storage chamber (711) through a first cleaning nozzle (95) is described. That is, an example in which water contained in a storage chamber (711) of a sump (70) is circulated is described.

[0195] The first flow valve (94) can open the first flow path (991). The second flow valve (97) can close the second flow path (992). The distribution valve (72) can close the third flow path (712f). As a result, water pumped by the circulation pump (61) can flow into the opened 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). The first cleaning nozzle (95) can spray bubbles toward the lower portion of the first filter (310). Through the above-described process, the lower part of the first filter (310) can be cleaned. For example, the lower part of the first filter (310) can be cleaned before the water in the water storage chamber (711) is drained. Meanwhile, the first cleaning nozzle (95) may be arranged to clean an area other than the lower part of the first filter (310). Depending on the position and / or shape of the first injection port (951a), the area that the first cleaning nozzle (95) can clean may vary.

[0196] Referring to FIGS. 9 to 21, an example in which water stored in a storage chamber (711) of a sump (70) is supplied back to the storage chamber (711) through a second cleaning nozzle (98) is described. That is, an example in which water contained in a storage chamber (711) of a sump (70) is circulated is described.

[0197] The first flow valve (94) can close the first flow path (991). The second flow valve (97) can open the second flow path (992). The distribution valve (72) can close the third flow path (712f). As a result, water pumped by the circulation pump (61) can flow into the opened 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). The second cleaning nozzle (98) can spray bubbles toward the upper portion of the first filter (310). Through the above-described process, cleaning of the upper portion of the first filter (310) can be performed. For example, cleaning of the upper portion of the first filter (310) can be performed before the water in the water storage chamber (711) is drained. Meanwhile, the second cleaning nozzle (98) may be provided to clean an area other than the upper portion of the first filter (310). Depending on the position and / or shape of the second injection port (981a), the area that the second cleaning nozzle (98) can clean may vary.

[0198] In addition, the present disclosure is not limited to the examples described above, and the first flow valve (94) can open the first flow path (991), the second flow valve (97) can open the second flow path (992), and the distribution valve (72) can close the third flow path (712f). Accordingly, water pumped by the circulation pump (61) can flow into the first flow path (991) and the second flow path (992). The first cleaning nozzle (95) and the second cleaning nozzle (98) can spray water toward the first filter (310). The first cleaning nozzle (95) and the second cleaning nozzle (98) can spray bubbles toward the first filter (310).

[0199] In this document, the filter cleaning operation of the dishwasher (1) may include spraying water toward the first filter (310) disposed inside the water storage chamber (711). The first cleaning nozzle (95) and / or the 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).

[0200] In this document, the filter cleaning operation of the dishwasher (1) may include spraying bubbles toward the first filter (310) disposed inside the water storage chamber (711). The first cleaning nozzle (95) and / or the second cleaning nozzle (98) may spray bubbles toward the first filter (310). Foreign substances attached to the first filter (310) may be separated from the first filter (310) by the bubbles sprayed from the first cleaning nozzle (95) and / or the second cleaning nozzle (98).

[0201] For example, the filter cleaning operation of the dishwasher (1) may include cleaning the lower part of the first filter (310), cleaning the upper part of the first filter (310), or cleaning the upper / lower parts of the first filter (310). For example, the filter cleaning operation may include sequentially cleaning the upper part of the first filter (310) after cleaning the lower part of the first filter (310). For example, the filter cleaning operation may include sequentially cleaning the lower part of the first filter (310) after cleaning the upper part of the first filter (310). For example, the filter cleaning operation may include simultaneously cleaning the lower part of the first filter (310) and cleaning the upper part of the first filter (310).

[0202] Meanwhile, 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 not be discharged to the outside but may be provided to the water storage chamber (711). 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).

[0203] A dishwasher (1) according to one embodiment includes a tub (12), a water storage chamber (711) provided to store water under the tub (12), a filter (310, 320) disposed inside the water storage chamber (711) and provided to filter water flowing into the water storage chamber (711), a circulation pump (61) provided to pump water contained in the water storage chamber (711), a guide pipe (93, 96) provided to guide water pumped by the circulation pump (61) to the water storage chamber (711), and a cleaning nozzle (95, 98) provided to spray water guided through the guide pipe (93, 96) toward the filter (310, 320). The cleaning nozzle (95, 98) includes an ejector (952, 982) that generates bubbles with water guided through the guide pipe (93, 96).

[0204] The above ejector (952, 982) may further include an ejector connection pipe (9521, 9821) connected to the guide pipe (93, 96) to allow water to flow in from the guide pipe (93, 96) and an air intake port (9522, 9822) provided to intake air from the outside of the ejector (952, 982).

[0205] The above ejector (952, 982) may further include an ejector connecting pipe (9523, 9823) in which water flowing in from the guide pipe (93, 96) and air sucked in from the air intake port (9522, 9822) are mixed to create bubbles.

[0206] The dishwasher (1) may further include a spray device (40) configured to spray water into the tub (12), a distribution chamber (712) configured to receive water supplied to the spray device (40), a connector (91) configured to guide water pumped by the circulation pump (61) to the distribution chamber (712), and a connecting pipe (92) connecting the guide pipe (93, 96) and the connector (91).

[0207] The connector (91) may include a connector inlet (911) provided to allow water pumped by the circulation pump (61) to flow in, a first connector outlet (912) communicated with the distribution chamber (712) so that the water pumped by the circulation pump (61) flows out to the distribution chamber (712), and a second connector outlet (913) communicated with the connection pipe (92) so that the water pumped by the circulation pump (61) flows out to the connection pipe (92). The second connector outlet (913) may be arranged closer to the connector inlet (911) than the first connector outlet (912).

[0208] The above dishwasher (1) may further include a valve (94, 97) provided to open and close the connecting pipe (92).

[0209] The above cleaning nozzle (95, 98) may include a slit (951a, 981a) provided to spray water.

[0210] The above slits (951a, 981a) can extend in the vertical direction.

[0211] The above filter (310, 320) is a first filter (310), and the dishwasher (1) may further include a second filter (330) disposed at the bottom of the tub (12), which includes a plurality of filter holes (331a). The slits (951a, 981a) may have a width greater than the diameter of the filter holes (330) to prevent the slits (951a, 981a) from being clogged by foreign substances passing through the second filter (330).

[0212] The above guide pipe (93, 96) is a first guide pipe (93), the above cleaning nozzle (95, 98) is a first cleaning nozzle (95), and the dishwasher (1) may further include a second guide pipe (96) that is separated from the first guide pipe (93) and is provided to guide water pumped by the circulation pump (61) to the water storage chamber (711), and a second cleaning nozzle (98) that is provided to spray water guided through the second guide pipe (96) toward the filter (310, 320).

[0213] The above ejector (952, 982) is a first ejector (952), and the second cleaning nozzle (98) may include a second ejector (982) that generates bubbles with water guided through the second guide pipe (96).

[0214] The first cleaning nozzle (95) may include a first injection port (951a) configured to spray water toward the lower portion of the filter (310, 320). The second cleaning nozzle (98) may include a second injection port (981a) configured to spray water toward the upper portion of the filter (310, 320).

[0215] At least one of the first injection port (951a) and the second injection port (981a) may include a slit (951a, 981a) extending in the vertical direction.

[0216] The dishwasher (1) may further include a spray device (40) configured to spray water into the tub (12), a distribution chamber (712) configured to receive water supplied to the spray device (40), a connector (91) configured to guide water pumped by the circulation pump (61) to the distribution chamber (712), and a connecting pipe (92) configured to receive water from the connector (91). The connecting pipe (92) may further include a first connecting portion (921) connected to the connector (91), a second connecting portion (923) connected to the first guide pipe (93), and a third connecting portion (925) connected to the second guide pipe (96).

[0217] The above filter (310) may be arranged to be rotatable within the water storage chamber (711).

[0218] A dishwasher (1) according to one embodiment includes a tub (12), a water storage chamber (711) provided to store water in the tub (12) under the tub (12) and having a filter (310, 320) disposed therein, a circulation pump (61) provided to pump water contained in the water storage chamber (711), a guide pipe (93, 96) provided to guide water pumped by the circulation pump (61) to the water storage chamber (711), and a cleaning nozzle (95, 98) coupled to the guide pipe (93, 96). The above cleaning nozzle (95, 98) includes an ejector (952, 982) including an ejector connecting pipe (9521, 9821) through which water guided through the guide pipe (93, 96) is introduced, an air intake port (9522, 9822) through which air is sucked in from the outside of the cleaning nozzle (95, 98), and an injection port (951a, 981a) which is connected to the ejector (952, 982) and is provided to spray water mixed with air sucked in through the air intake port (9522, 9822) toward the filter (310, 320).

[0219] The above ejector (952, 982) may further include an ejector connection pipe (9523, 9823) having one end communicating with the injection port and the other end communicating with the ejector connection pipe (9521, 9821) and the air intake port (9522, 9822).

[0220] The above guide pipe (93, 96) is a first guide pipe (93), the above cleaning nozzle (95, 98) is a first cleaning nozzle (95), and the dishwasher (1) may further include a second guide pipe (96) that is distinct from the first guide pipe (93) and is provided to guide water pumped by the circulation pump (61) to the water storage chamber (711), and a second cleaning nozzle (98) that is coupled to the second guide pipe (96) and is provided to spray water guided through the second guide pipe (96) toward the filter (310, 320).

[0221] The dishwasher (1) may further include a water storage chamber housing (7110) forming the water storage chamber (711). The first cleaning nozzle (95) may be coupled to the water storage chamber housing (7110) and configured to spray water toward the lower portion of the filter (310, 320). The second cleaning nozzle (98) may be coupled to the water storage chamber housing (7110) and configured to spray water toward the upper portion of the filter (310, 320).

[0222] The above filter (310) may be arranged to be rotatable within the water storage chamber (711).

[0223] According to the invention, the usability of a dishwasher can be improved.

[0224] According to the present disclosure, a dishwasher may include a cleaning nozzle equipped with an ejector that forms high-pressure bubbles. Accordingly, the cleaning efficiency of the filter may be increased.

[0225] According to the invention, a dishwasher can guide water contained in a water storage chamber to a cleaning nozzle via a circulation pump. The cleaning nozzle can automatically clean the filter by spraying water onto the outer surface of the filter.

[0226] The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects that are not mentioned can be clearly understood by a person having ordinary skill in the art to which the present disclosure belongs from the description below.

[0227] The above illustrates and describes specific embodiments. However, the invention is not limited to the above-described embodiments, and those skilled in the art will readily appreciate that various modifications and implementations can be made without departing from the spirit and scope of the invention as set forth in the claims below.

Claims

1. Tub; A water storage chamber provided to store water under the above tub; A filter disposed inside the water storage chamber and provided to filter water flowing into the water storage chamber; A circulation pump provided to pump water contained in the above water storage chamber; A guide pipe provided to guide water pumped by the circulation pump to the water storage chamber; and A cleaning nozzle is provided to spray water guided through the guide pipe toward the filter, A dishwasher wherein the cleaning nozzle includes an ejector that generates bubbles in water guided through the guide pipe.

2. In paragraph 1, The above ejector, An ejector connecting pipe connected to the guide pipe so that water flows in from the guide pipe; and A dishwasher further comprising an air intake port configured to suck air from the outside of the ejector.

3. In paragraph 2, The above ejector, A dishwasher further comprising an ejector extension pipe in which water flowing in from the guide pipe and air sucked in from the air intake port are mixed to create bubbles.

4. In paragraph 1, A spray device provided to spray water into the above tub; A distribution chamber provided to receive water supplied to the above injection device; A connector that guides water pumped by the circulation pump to the distribution chamber; and A dishwasher further comprising a connecting pipe connecting the guide pipe and the connector.

5. In paragraph 4, The above connector, A connector inlet provided to allow water pumped by the above circulation pump to flow in; A first connector outlet communicating with the distribution chamber so that water pumped by the circulation pump flows out to the distribution chamber; and A second connector outlet portion is included that communicates with the connecting pipe so that water pumped by the circulation pump flows out to the connecting pipe, A dishwasher wherein the second connector outlet is positioned closer to the connector inlet than the first connector outlet.

6. In paragraph 4, A dishwasher further comprising a valve configured to open and close the above-described connecting pipe.

7. In paragraph 1, A dishwasher wherein the cleaning nozzle includes a slit provided to spray water.

8. In paragraph 7, The dishwasher has the above slit extending in the vertical direction.

9. In paragraph 7, The above filter is a first filter, The dishwasher further comprises a second filter disposed at the bottom of the tub, the second filter including a plurality of filter holes, The above slit is, A dishwasher having a width greater than the diameter of the filter hole to prevent the slit from being clogged by foreign substances passing through the second filter.

10. In paragraph 1, The above guide pipe is a first guide pipe, The above cleaning nozzle is a first cleaning nozzle, The above dishwasher, A second guide pipe, which is separated from the first guide pipe and is provided to guide water pumped by the circulation pump to the water storage chamber; and A dishwasher further comprising a second cleaning nozzle configured to spray water guided through the second guide pipe toward the filter.

11. In paragraph 10, The above ejector is a first ejector, A dishwasher wherein the second cleaning nozzle includes a second ejector that generates bubbles with water guided through the second guide pipe.

12. In paragraph 10, The first cleaning nozzle includes a first nozzle configured to spray water toward the lower portion of the filter, A dishwasher wherein the second cleaning nozzle comprises a second nozzle configured to spray water toward the upper portion of the filter.

13. In paragraph 12, A dishwasher, wherein at least one of the first nozzle and the second nozzle includes a slit extending in a vertical direction.

14. In paragraph 10, A spray device provided to spray water into the above tub; A distribution chamber provided to receive water supplied to the above injection device; A connector that guides water pumped by the circulation pump to the distribution chamber; and Further comprising a connecting pipe arranged to supply water from the above connector, The above connecting pipe is, A first connector connected to the above connector; a second connecting portion connected to the first guide pipe; and A dishwasher further comprising a third connection portion connected to the second guide pipe.

15. In paragraph 1, A dishwasher wherein the filter is arranged to be rotatable within the water storage chamber.

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