Dishwasher

Abstract

This dishwasher comprises: a tub; a water storage chamber housing forming a water storage chamber provided under the tub to store water; a filter disposed inside the water storage chamber and provided to filter water introduced into the water storage chamber; a circulation pump provided to pump water accommodated in the water storage chamber; a guide pipe provided to guide the water pumped by the circulation pump to the water storage chamber; and a cleaning nozzle provided to spray the water guided through the guide pipe toward the filter. The water storage chamber housing includes a discharge hole provided to allow water to be discharged to the circulation pump. The cleaning nozzle is provided to spray water toward an area disposed to be lower than or equal to the height of the discharge hole on the basis of the vertical direction in the filter.

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 capable of cleaning a filter without rotating the filter.

[0007] One aspect of the present disclosure provides a dishwasher capable of cleaning a filter by intensively spraying water on major contaminant areas 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 housing forming 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 water storage chamber housing includes a discharge hole configured to discharge water to the circulation pump. The cleaning nozzle is configured to spray water toward an area disposed at a height lower than or equal to the discharge hole in the vertical direction of the filter.

[0010] A dishwasher according to the invention comprises a tub, a water storage chamber housing forming 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 flow path 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 flow path toward the filter. The cleaning nozzle comprises a nozzle body disposed on a side wall of the water storage chamber housing and a slit formed in the nozzle body and extending along a circumferential direction of the water storage chamber housing and configured to spray water toward a lower portion of 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 a state in which some components of the sump assembly of the dishwasher illustrated in Figure 4 are disassembled.

[0016] FIG. 6 illustrates a partial configuration of a dishwasher according to one embodiment.

[0017] Figure 7 illustrates some components of the dishwasher illustrated in Figure 6 from another direction.

[0018] Fig. 8 shows a part of the dishwasher shown in Fig. 6 from a different direction than Fig. 7.

[0019] Fig. 9 is a bottom view of a part of the dishwasher illustrated in Fig. 6.

[0020] Fig. 10 shows a state in which the circulation pump, drain pump, and guiding structure are disassembled in some configurations of the dishwasher shown in Fig. 6.

[0021] Fig. 11 shows a state in which the circulation pump, drain pump, and guiding structure are disassembled in some configurations of the dishwasher shown in Fig. 6.

[0022] Fig. 12 shows a state in which the circulation pump, drain pump, and guiding structure are disassembled in some configurations of the dishwasher shown in Fig. 6.

[0023] Fig. 13 schematically illustrates a filter cleaning structure of a dishwasher according to one embodiment.

[0024] Fig. 14 illustrates the filter cleaning structure of the dishwasher illustrated in Fig. 13 from another direction.

[0025] FIG. 15 illustrates a first area and a second area of ​​a dishwasher according to one embodiment.

[0026] Figure 16 illustrates the first and second areas of the dishwasher illustrated in Figure 15 from different directions.

[0027] Figure 17 illustrates the direction in which a cleaning nozzle of a dishwasher sprays water according to one embodiment.

[0028] Figure 18 illustrates the direction in which a cleaning nozzle of a dishwasher sprays water according to one embodiment.

[0029] FIG. 19 is an enlarged view of a third area of ​​a dishwasher according to one embodiment.

[0030] Fig. 20 is a side cross-sectional view taken along line A-A' shown in Fig. 3.

[0031] Figure 21 is an enlarged view of area B of Figure 20.

[0032] Figure 22 illustrates a flow guide according to one embodiment.

[0033] 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.

[0034] In connection with the description of the drawings, similar reference numerals may be used for similar or related components.

[0035] 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.

[0036] 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.

[0037] The term "and / or" includes any combination of a plurality of related described elements or any one of a plurality of related described elements.

[0038] 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).

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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).

[0047] Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings.

[0048] 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.

[0049] 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).

[0050] 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.

[0051] 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.

[0052] 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).

[0053] 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).

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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).

[0058] 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).

[0059] 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).

[0060] 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.

[0061] 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).

[0062] The dishwasher (1) may include a spray device (40) configured to spray water. The spray device (40) may spray water into the inside of the tub (12). The spray device (40) may spray water into the washing chamber (10a). The spray device (40) may spray water toward objects to be washed placed inside the tub (12). The spray device (40) may spray water toward dishes stored in a storage container (50). The spray device (40) may receive water from a sump (70) to be described later and / or a duct (20) to be described later.

[0063] Meanwhile, in this document, water may mean both water mixed with detergent (and / or rinse) and water not mixed with detergent (and / or rinse).

[0064] 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).

[0065] 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).

[0066] 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.

[0067] 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).

[0068] 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.

[0069] 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).

[0070] 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.

[0071] 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).

[0072] 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, see FIG. 5).

[0073] 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).

[0074] Fig. 3 schematically illustrates the 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 an exploded view of some components of the sump assembly of the dishwasher illustrated in Fig. 4.

[0075] Referring to FIGS. 3 to 5, the dishwasher (1) may include a sump (70) and components coupled to the sump (70) to move water stored in the sump (70) or to fix / support the sump (70). The sump (70) may be detachably coupled to the bottom (12b) of the tub (12). Most of the sump (70) may be placed in the machine room (10b). The sump (70) and the components coupled to the sump (70) may be referred to as a sump assembly.

[0076] The sump (70) may include a reservoir chamber housing (71) forming a reservoir chamber (711). The reservoir chamber housing (71) may be positioned below the tub (12). The reservoir chamber housing (71) may have a shape for containing water. The reservoir chamber housing (71) may have an open top shape. The reservoir chamber housing (71) may have a concave shape downward.

[0077] A water storage chamber (711) may be provided to store water. The water storage chamber (711) may be arranged below the tub (12). The water storage chamber (711) may be provided 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 provided to store water introduced from an external water source through a water supply unit (715, see FIG. 15).

[0078] The water storage chamber housing (71) may include a circulation pump connection pipe (712) connected to a circulation pump (61). The circulation pump (61) may be coupled to the circulation pump connection pipe (712). A circulation pump inlet (611) of a circulation pump (61), which will be described later, may be coupled to the circulation pump connection pipe (712). The circulation pump connection pipe (712) may be communicated with the water storage chamber (711). Water within the water storage chamber (711) may flow toward the circulation pump (61) through the circulation pump connection pipe (712).

[0079] The water storage chamber housing (71) may include a discharge hole (712a). The discharge hole (712a) may be provided to discharge water to the circulation pump (61). The discharge hole (712a) may be provided at one end of the circulation pump connection pipe (712). The discharge hole (712a) may be arranged on a side wall of the water storage chamber housing (71). For example, the discharge hole (712a) may be provided between the first nozzle body (951) and the second nozzle body (981), which will be described later, based on the circumferential direction of the water storage chamber housing (71). For example, the discharge hole (712a) may be arranged at the lower portion of the water storage chamber housing (71). For example, the discharge hole (712a) may be provided in an approximately circular shape.

[0080] The water storage chamber housing (71) may include a flow guide (713, see FIG. 21). The flow guide (713, see FIG. 21) may be provided to guide water flowing from the water storage chamber (711) to the circulation pump (61). A detailed description thereof will be provided later.

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

[0082] The sump (70) may include a distribution chamber housing (72) forming a distribution chamber (721). The distribution chamber housing (72) may include a shape for containing water. The distribution chamber housing (72) may include a shape with an open top. The distribution chamber housing (72) may include a shape that is concave downward.

[0083] The distribution chamber (721) may be provided to receive water. The distribution chamber (721) may be partitioned from the water storage chamber (711). The distribution chamber (721) may receive water pumped by the circulation pump (61). The distribution chamber (721) may receive water supplied to the spray device (40). The water received in the distribution chamber (721) may be provided to the spray device (40) through a distribution cover (75) to be described later. The distribution chamber (721) may include a flow path (721f) provided to guide the water pumped by the circulation pump (61) to the spray device (40). Hereinafter, the flow path (721f) may also be referred to as a third flow path (721f) to distinguish it from the first flow path (991) and the second flow path (992) to be described later. Additionally, the first euro (991), second euro (992) and third euro (721f) do not have ordinal numbers of “first”, “second” and “third” as described above limiting their composition.

[0084] The distribution chamber housing (71) may include a chamber inlet (722). The chamber inlet (722) may be in communication with the distribution chamber (721). The chamber inlet (722) may extend downward from the distribution chamber (721). Water pumped by the circulation pump (61) may flow into the distribution chamber (721) through the chamber inlet (722). The chamber inlet (722) may guide the water pumped by the circulation pump (61) to the distribution chamber (721). For example, the water pumped by the circulation pump (61) may be supplied to the distribution chamber (721) through a connector (91) and the chamber inlet (722), which will be described later. The flow path (or space) formed inside the chamber inlet (722) may be defined as a configuration included in the distribution chamber (721). For example, the euro (712f) may include a euro extending from the chamber inlet (722) to the chamber outlet (751, 752 and / or 753) described below.

[0085] In the drawing, the storage chamber (711) and the distribution chamber (721) are shown as being formed integrally as components of the sump (70). However, the present disclosure is not limited to what is shown. The storage chamber (711) and the distribution chamber (721) may also be provided as separate components.

[0086] The sump (70) may include a sump body (73). The sump body (73) may refer to the exterior of the sump (70) excluding the storage chamber housing (71) and the distribution chamber housing (72). For example, the sump body (73) may be provided in a roughly circular plate shape.

[0087] The sump (70) may include a distribution valve (74). The distribution valve (74) may be configured to open or close the flow path (721f) of the distribution chamber (721). While the distribution valve (74) opens the flow path (721f) of the distribution chamber (721), water pumped by the circulation pump (61) may flow into the distribution chamber (721). While the distribution valve (74) closes the flow path (721f) of the distribution chamber (721), water pumped by the circulation pump (61) may not flow into the distribution chamber (721).

[0088] Meanwhile, opening the flow path (721f) may mean not only completely opening the flow path (721f), but also opening at least a portion of the flow path (721f) to allow water to flow through the flow path (721f). Closing the flow path (721f) may mean not only completely closing the flow path (721f), but also covering at least a portion of the flow path (721f), thereby preventing water from flowing through the flow path (721f) or reducing the flow rate of water flowing through the flow path (721f).

[0089] For example, the distribution valve (74) may include a distribution motor (741), a distribution shaft (742), and a distribution disc (743). The distribution motor (741) may generate a rotational force. The distribution shaft (742) may connect the distribution motor (741) and the distribution disc (743). A first end of the distribution shaft (742) may be coupled to a shaft of the distribution motor (741). A second end of the distribution shaft (742) may be coupled to the distribution disc (743). The distribution shaft (742) may transmit a rotational force generated in the distribution motor (741) to the distribution disc (743). However, the distribution motor (741) and the distribution disc (743) may be directly connected without the distribution shaft (742). The distribution disc (743) may be arranged to rotate by a rotational force generated in the distribution motor (741). The distribution disc (743) can be placed inside the distribution chamber (721). The distribution disc (743) can open or close the flow path (721f) while rotating inside the distribution chamber (721).

[0090] For example, the distribution disc (743) may include a communication hole (7431). If the communication hole (7431) of the distribution disc (743) is arranged to correspond to the flow path (721f), the flow path (721f) may be opened. At this time, water pumped by the circulation pump (61) may flow toward the distribution chamber (721). If the communication hole (7431) of the distribution disc (743) is arranged not to correspond to the flow path (721f), the flow path (721f) may be closed. At this time, water pumped by the circulation pump (61) may not flow toward the distribution chamber (721).

[0091] However, the present disclosure is not limited to the above-described examples, and the distribution valve (74) may include various known types of valves. The type and shape of the distribution valve (74) are not limited as long as it can open or close the flow path (721f) of the distribution chamber (721).

[0092] The sump (70) may include a distribution cover (75). The distribution cover (75) may be provided to cover the distribution chamber (721). The distribution cover (75) may be provided to cover the distribution chamber housing (72). The distribution cover (75) may be detachably coupled to the distribution chamber housing (72). For example, the distribution cover (75) may be rotatably coupled to the distribution chamber housing (72).

[0093] The distribution cover (75) can include at least one chamber outlet (751, 752 and / or 753). Water within the distribution chamber (721) can be discharged through the at least one chamber outlet (751, 752 and / or 753). While the distribution cover (75) is coupled to the distribution chamber housing (72), the at least one chamber outlet (751, 752 and / or 753) can be in communication with the distribution chamber (721). While the distribution cover (75) is coupled to the distribution chamber housing (72), the at least one chamber outlet (751, 752 and / or 753) can be connected to the spray device (40) to supply water within the distribution chamber (721) to the spray device (40). The chamber outlet (751, 752 and / or 753) may be referred to as an outlet (751, 752 and / or 753).

[0094] For example, the distribution cover (75) may include a plurality of chamber outlets (751, 752, 753) corresponding to a plurality of spray units (41, 42, 43), respectively. For example, the distribution cover (75) may include a first chamber outlet (751) connected to a first spray unit (41), a second chamber outlet (752) connected to a second spray unit (42), and a third chamber outlet (753) connected to a third spray unit (43). The first chamber outlet (751) may be directly connected to the first spray unit (41). The second chamber outlet (752) may be connected to the second spray unit (42) via a duct (20, see FIG. 2). The third chamber outlet (753) may be connected to the third spray unit (43) via a duct (20, see FIG. 2). The water in the distribution chamber (721) can flow out through the first chamber outlet (751) and into the first spray unit (41). The water in the distribution chamber (721) can flow out through the second chamber outlet (752) 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 (721) can flow out through the third chamber outlet (753) 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 (751, 752, 753) can be formed integrally, and the water flowing out through the integrally formed configuration can be branched during the flow.

[0095] In the drawing, the distribution cover (75) is depicted as a separate component from the distribution chamber housing (72). However, the present disclosure is not limited to the drawing. Unlike the drawing, the distribution cover (75) and the distribution chamber housing (72) may be formed integrally. The distribution cover (75) may be provided as a component of the distribution chamber housing (72).

[0096] 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 water storage chamber housing (71).

[0097] 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).

[0098] 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).

[0099] For example, the first filter (310) may be provided in 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 provided to surround the second filter (320). For example, the first filter (310) may be provided to cover at least a portion of the outer surface of the second filter (320).

[0100] 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 water storage chamber housing (72).

[0101] 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).

[0102] 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).

[0103] 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).

[0104] For example, the third filter (330) may include a filter body (331). The filter body (331) may have a roughly plate shape. At least a portion of the filter body (331) may be disposed above an inclined surface (73a) of the sump body (73), 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 a support plate (80) to be described later. One side (331a) of the filter body (331) may be mounted on the mounting portion (83) of the support plate (80).

[0105] 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 (73a) of the sump body (73) and flow into the water storage chamber (711). For example, water passing through the filter body (331) may flow along the inclined surface (73a) of the sump body (73) 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.

[0106] 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.

[0107] 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).

[0108] 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.

[0109] 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).

[0110] 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 body (73).

[0111] 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.

[0112] 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 (721).

[0113] 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).

[0114] The dishwasher (1) may include a circulation pump (61). The circulation pump (61) may be configured to pump water stored in a sump (70). The circulation pump (61) may be configured to pump water contained in a water storage chamber (711). The water pumped by the circulation pump (61) may flow to a distribution chamber (721) or may be circulated and flow to 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).

[0115] 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).

[0116] 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).

[0117] FIG. 6 illustrates a part of a dishwasher according to one embodiment. FIG. 7 illustrates a part of the dishwasher illustrated in FIG. 6 from a different direction. FIG. 8 illustrates a part of the dishwasher illustrated in FIG. 6 from a different direction than FIG. 7. FIG. 9 is a bottom view of a part of the dishwasher illustrated in FIG. 6. FIG. 10 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. 6. FIG. 11 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. 6. FIG. 12 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. 6.

[0118] Referring to FIGS. 6 to 12, 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 (721) 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 (721) or to a connecting pipe (92) to be described later.

[0119] 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).

[0120] 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 (722). The first connector outlet (912) may be connected to the chamber inlet (722). The first connector outlet (912) may be in communication with the distribution chamber (721) so that water pumped by the circulation pump (61) may be discharged into the distribution chamber (721). Water introduced into the connector inlet (911) may flow into the distribution chamber (721) 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).

[0121] 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).

[0122] 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.

[0123] 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).

[0124] 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).

[0125] 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).

[0126] 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).

[0127] 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).

[0128] 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).

[0129] 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).

[0130] 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).

[0131] 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).

[0132] 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).

[0133] 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).

[0134] 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).

[0135] 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).

[0136] 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).

[0137] 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 be provided to guide water pumped by 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).

[0138] 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.

[0139] 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).

[0140] 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.

[0141] For example, the first cleaning nozzle (95) may include a first nozzle body (951) in which a first injection port (951a) is formed. This will be described in detail later.

[0142] 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 (71). For example, the first cleaning nozzle (95) can be mounted on a first nozzle mounting portion (716) formed on the water storage chamber housing (71). 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 (71). For example, the first nozzle mounting portion (716) can include a first sump opening (7161) open toward the water storage chamber (711) and a first coupling portion (7162) provided around the first sump opening (7161). For example, the first cleaning nozzle (95) can include a 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.

[0143] While the first cleaning nozzle (95) is coupled to the water storage chamber housing (71), 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 water storage chamber 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 water storage chamber housing (71) within a predetermined error range.

[0144] 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).

[0145] 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).

[0146] The second flow path 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 be provided to guide water pumped by 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 portion (921) and the fourth connection portion (924), a flow path formed between the fourth connection portion (924) and the fifth connection portion (925), or a flow path formed by the second guide pipe (96).

[0147] 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.

[0148] 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).

[0149] 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 lower 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.

[0150] For example, the second cleaning nozzle (98) may include a second nozzle body (981) in which a second injection port (981a) is formed. This will be described in detail later.

[0151] 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 (71). For example, the second cleaning nozzle (98) can be mounted to a second nozzle mounting portion (717) formed in the water storage chamber housing (71). For example, the second nozzle mounting portion (717) can include a second sump opening (7171) open toward the water storage chamber (711) and a third coupling portion (7172) provided around the second sump opening (7171). For example, the second cleaning nozzle (98) can include a 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.

[0152] While the second cleaning nozzle (98) is coupled to the water storage chamber housing (71), 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 water storage chamber 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 water storage chamber housing (71) within a predetermined error range.

[0153] 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 path connecting the circulation pump (61) to the reservoir chamber (711) can be formed.

[0154] Fig. 13 schematically illustrates a filter cleaning structure of a dishwasher according to one embodiment. Fig. 14 illustrates the filter cleaning structure of the dishwasher illustrated in Fig. 13 from another direction.

[0155] Referring to FIGS. 13 and 14, 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.

[0156] The first cleaning nozzle (95) may include a first nozzle body (951). For example, the first nozzle body (951) may be disposed on a side wall of the water storage chamber housing (71). For example, the first nozzle body (951) may include a shape corresponding to the first sump opening (7161, see FIG. 10).

[0157] The first cleaning nozzle (95) may include a first injection port (951a) configured to spray water. The first injection port (951a) may be formed in the first nozzle body (951). For example, the first injection port (951a) may be provided at a lower end of the first nozzle body (951). For example, the first nozzle body (951) may be disposed on a side wall of the water storage chamber housing (71), and the first injection port (951a) may be disposed at a lower end of the side wall of the water storage chamber housing (71).

[0158] The first injection port (951a) may include a slit shape. For example, the first injection port (951a) may include a slit shape extending approximately horizontally. For example, the first injection port (951a) may include a slit shape extending along the circumference of the water storage chamber housing (71). For example, the first injection port (951a) may include a slit shape extending approximately along the circumference of the first filter (310). For example, the first injection port (951a) may be referred to as a first slit (951a).

[0159] 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).

[0160] The first cleaning nozzle (95) may include a first extension pipe (952). The first extension pipe (952) may extend from the first nozzle body (951). One end of the first extension pipe (952) may be in communication with the first injection port (951a). The other end of the first extension pipe (952) may be in communication with the first guide pipe (93).

[0161] 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.

[0162] The second cleaning nozzle (98) may include a second nozzle body (981). For example, the second nozzle body (981) may be disposed on a side wall of the water storage chamber housing (71). For example, the second nozzle body (981) may include a shape corresponding to the second sump opening (7171, see FIG. 11).

[0163] The second cleaning nozzle (98) may include a second injection port (981a) configured to spray water. The second injection port (981a) may be formed in the second nozzle body (981). For example, the second injection port (981a) may be provided at a lower end of the second nozzle body (981). For example, the second nozzle body (951) may be disposed on a side wall of the water storage chamber housing (71), and the second injection port (981a) may be disposed at a lower end of the side wall of the water storage chamber housing (71).

[0164] The second injection port (981a) may include a slit shape. For example, the second injection port (981a) may include a slit shape extending approximately horizontally. For example, the second injection port (981a) may include a slit shape extending along the circumference of the water storage chamber housing (71). For example, the second injection port (981a) may include a slit shape extending approximately along the circumference of the first filter (310). For example, the second injection port (981a) may be referred to as a second slit (981a).

[0165] 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).

[0166] The second cleaning nozzle (98) may include a first extension pipe (982). The second extension pipe (982) may extend from the second nozzle body (981). One end of the second extension pipe (982) may be in communication with the second injection port (981a). The other end of the second extension pipe (982) may be in communication with the second guide pipe (96).

[0167] 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 (71). The first cleaning nozzle (95) and the second cleaning nozzle (98) may be arranged so as not to interfere with each other.

[0168] For example, the first injection port (951a) of the first cleaning nozzle (95) may include a slit extending approximately horizontally. For example, the second injection port (981a) of the second cleaning nozzle (98) may include a slit extending approximately horizontally. 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 approximately horizontally. 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 vertically. For example, the second injection port (981a) may include a shape extending approximately vertically. For example, the extension length of the first injection port (951a) and the extension length of the second injection port (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.

[0169] 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).

[0170] 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).

[0171] 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.

[0172] 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.

[0173] 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 be branched from at least one of the first flow path (991) or the second flow path (992). The additional cleaning nozzle may be arranged so as not to interfere with the first cleaning nozzle (95) and the second cleaning nozzle (98).

[0174] Referring to FIGS. 6 to 14, an example in which water stored in a storage chamber (711) of a sump (70) flows to a distribution chamber (721) will be described.

[0175] 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 (74) can open the third flow path (721f). As a result, water pumped by the circulation pump (61) can flow into the opened third flow path (721f). The water pumped by the circulation pump (61) can pass through the connector (91) and flow into the distribution chamber (721). 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 (721) through the chamber inlet (722). The water in the distribution chamber (721) can pass through the distribution cover (75) 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.

[0176] Referring to FIGS. 6 to 14, 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.

[0177] 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 (74) can close the third flow path (721f). 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).

[0178] Referring to FIGS. 6 to 14, 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.

[0179] 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 (74) can close the third flow path (721f). 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).

[0180] 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 (74) can close the third flow path (721f). 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).

[0181] 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).

[0182] 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).

[0183] FIG. 15 illustrates a first area and a second area of ​​a dishwasher according to one embodiment. FIG. 16 illustrates the first area and the second area of ​​the dishwasher illustrated in FIG. 15 from a different direction. FIG. 17 illustrates a direction in which a cleaning nozzle of a dishwasher according to one embodiment sprays water. FIG. 18 illustrates a direction in which a cleaning nozzle of a dishwasher according to one embodiment sprays water. FIG. 19 is an enlarged view of a third area of ​​a dishwasher according to one embodiment.

[0184] Referring to FIGS. 15 and 16, the first filter (310) may be divided into a first region (311) and a second region. Each of the first region (311) and the second region (312) may include both the outer surface and the inner surface of the first filter (310). The first region (311) and the second region (312) may be divided based on the discharge hole (712a). For example, the first region (311) may be defined as a region located lower than the upper end of the discharge hole (712a) in the vertical direction. For example, the first region (311) may be defined as a region located lower than or equal to the height of the discharge hole (712a) in the vertical direction. For example, the second region (312) may be defined as a region located higher than the upper end of the discharge hole (712a) in the vertical direction. For example, the first region (311) can be defined as a region positioned higher than the height of the discharge hole (712a) in the vertical direction.

[0185] The first region (311) may be provided below the second region (312). Since foreign substances contained in the water storage chamber (711) settle due to their own weight, more foreign substances may be contained inside the first region (311) than inside the second region (312). In addition, the first region (311) may be arranged closer to the discharge hole (712a) compared to the second region (312). Accordingly, when water contained in the water storage chamber (711) is pumped by the circulation pump (61), most of the water contained in the inner space (711a) of the water storage chamber (711) may pass through the first region (311) and flow toward the discharge hole (712a). That is, more foreign substances are accommodated on the inner side of the first region (311) than on the inner side of the second region (312), and most of the water accommodated in the inner space (711a) of the water storage chamber (711) can pass through the first region (311). Through this configuration, more foreign substances can be filtered in the first region (311) than in the second region (312), and more foreign substances can be captured on the inner side of the first region (311) than on the inner side of the second region (312).

[0186] Referring to FIGS. 15 to 18, the first cleaning nozzle (95) may be provided to spray water toward the first region (311). For example, the first cleaning nozzle (95) may be provided to spray water toward the lower portion of the first region (311). For example, the first injection port (951a) of the first cleaning nozzle (95) may be provided to be positioned at a position corresponding to the first region (311) in the up-down direction, and to spray water toward the first region (311).

[0187] The second cleaning nozzle (98) may be provided to spray water toward the first region (311). For example, the second cleaning nozzle (98) may be provided to spray water toward the lower portion of the first region (311). For example, the second spray port (981a) of the second cleaning nozzle (98) may be provided to be positioned at a position corresponding to the first region (311) in the vertical direction, and to spray water toward the first region (311). For example, the second cleaning nozzle (98) may be provided to spray water toward a different region that is distinct from the region where the first cleaning nozzle (95) sprays water.

[0188] Referring to FIGS. 17 to 19, the first filter (310) may include a third region (313). The third region (313) may be a part of the first region (311). The third region (313) may be defined as a region of the first filter (310) facing the discharge hole (712a).

[0189] Referring to Fig. 17, the third region (313) may include a fourth region (313a) facing the discharge hole (712a) based on the direction vertically penetrating the discharge hole (712a). When water contained in the water storage chamber (711) is pumped by the circulation pump (61), the water contained in the inner space (310a) of the water storage chamber (711) flows toward the discharge hole (712a), so that a relatively large amount of foreign substances can be captured in the fourth region (313a). For example, the first cleaning nozzle (95) may spray water toward the fourth region (313a). That is, the first cleaning nozzle (95) may spray water toward an area in the first filter (310) where a relatively large amount of foreign substances are captured, thereby efficiently removing foreign substances captured in the first filter (310).

[0190] Referring to Fig. 18, the third region (313) may include a fifth region (313b) facing the discharge hole (712a) based on the direction in which the circulation pump connection pipe (712) extends. When water contained in the water storage chamber (711) is pumped by the circulation pump (61), the direction of the force with which the circulation pump (61) pumps the water is the same as the direction in which the circulation pump connection pipe (712) extends, so that a relatively large amount of foreign substances can be captured in the fifth region (313b). For example, the first cleaning nozzle (95) may spray water toward the fifth region (313b). That is, the first cleaning nozzle (95) may spray water toward an area in the first filter (310) in which a relatively large amount of foreign substances are captured, thereby efficiently removing foreign substances captured in the first filter (310).

[0191] In the drawing, the fourth region (313a) and the fifth region (313b) are depicted as referring to the same region, but the present disclosure is not limited thereto. For example, the direction in which the discharge hole (712a) vertically penetrates and the direction in which the circulation pump connection pipe (712) extends may be different. In this case, the fourth region (313a) and the fifth region (313b) may refer to different regions.

[0192] For example, the direction in which the circulation pump connection pipe (712) extends may be a direction extending tangentially from one inner surface of the water storage chamber housing (71) adjacent to the discharge hole (712a). For example, the circulation pump connection pipe (712) may extend along a direction extending tangentially from one inner surface where the first cleaning nozzle (95) is located. Accordingly, the direction of the force with which the circulation pump (61) pumps water may be eccentric with the central axis of the water storage chamber housing (71), and a centrifugal force may be applied to the water contained in the water storage chamber (711). In addition, by applying a centrifugal force to the water contained in the water storage chamber (711), the flow direction of the water flowing to the circulation pump (61) within the water storage chamber (711) may be restricted. For example, if the circulation pump connecting pipe (712) extends in a direction extending tangentially from one inner surface where the first cleaning nozzle (95) is located, the direction of water flow can be restricted to the counterclockwise direction. At this time, most of the water flowing from the water storage chamber (711) to the circulation pump (61) can pass through the fifth region (313b), and relatively many foreign substances can be trapped in the fifth region (313b). Therefore, if the first cleaning nozzle (95) sprays water toward the fifth region (313b), foreign substances captured in the first filter (310) can be efficiently removed.

[0193] Referring to FIGS. 17 and 18, the first cleaning nozzle (95) may be configured to spray water in a direction toward the center of the first filter (310). This allows the water pressure applied to the first filter (310) to be maximized, and foreign substances captured in the first filter (310) to be efficiently removed.

[0194] One end of the first extension pipe (952) communicating with the first injection port (951a) of the first cleaning nozzle (95) may be provided in a fan shape. Water passing through one end of the first extension pipe (952) may be sprayed while widely spreading to both sides based on the direction in which the first extension pipe (952) extends. Accordingly, the first cleaning nozzle (95) can spray water toward a wider area of ​​the first filter (310) based on the circumferential direction of the first filter (310) compared to a case in which one end of the first extension pipe (952) is provided in a straight pipe shape.

[0195] The first cleaning nozzle (95) may be positioned on one side of the discharge hole (712a). The first cleaning nozzle (95) may be positioned adjacent to one side of the discharge hole (712a) and configured to spray water in a direction away from the discharge hole (712a). This makes it easier to spray water into the third area (313) through the first cleaning nozzle (95), and allows for efficient removal of foreign substances captured in the first filter (310).

[0196] The second cleaning nozzle (98) may be configured to spray water in a direction toward the center of the first filter (310). This allows the water pressure applied to the first filter (310) to be maximized, and foreign substances captured in the first filter (310) to be efficiently removed.

[0197] One end of the second extension pipe (982) communicating with the second injection port (981a) of the second cleaning nozzle (98) may be provided in a fan shape. Water passing through one end of the second extension pipe (982) may be sprayed while widely spreading to both sides based on the direction in which the second extension pipe (982) extends. Accordingly, the second cleaning nozzle (98) can spray water toward a wider area of ​​the first filter (310) based on the circumferential direction of the first filter (310) compared to a case in which one end of the first extension pipe (982) is provided in a straight pipe shape.

[0198] For example, the second cleaning nozzle (98) may be arranged on the other side of the discharge hole (712a). For example, the second cleaning nozzle (98) may be arranged on the other side of the discharge hole (712a) so as to spray water in a different area from the area where the first cleaning nozzle (95) sprays water in the first filter (310). For example, at least a part of the area where the second cleaning nozzle (98) sprays water in the first filter (310) may not overlap with the area where the first cleaning nozzle (95) sprays water. For example, the second cleaning nozzle (98) may be arranged to spray water in a different area than the third area (313). For example, the second cleaning nozzle (98) may be arranged to spray water toward an area disposed on one side of the third area (313). Accordingly, the second cleaning nozzle (98) can remove foreign substances captured in the first filter (310) that cannot be removed through the first cleaning nozzle (95).

[0199] In the drawing, an example is shown in which the second cleaning nozzle (98) sprays water to an area other than the third area (313), but the present disclosure is not limited thereto. For example, the second cleaning nozzle (98) may be configured to spray water toward the third area (313).

[0200] Fig. 20 is a cross-sectional view taken along line A-A' shown in Fig. 3. Fig. 21 is an enlarged view of area B of Fig. 20. Fig. 22 illustrates a flow guide according to one embodiment.

[0201] Referring to FIGS. 20 to 22, a flow guide (713) may be arranged on the bottom surface of the water storage chamber (711). The flow guide (713) may be provided around the discharge hole (712a). The flow guide (713) may cover at least a portion of the discharge hole (712a).

[0202] The flow guide (713) may include a guide body (7131). For example, the guide body (7131) may cover the upper and central portions of the discharge hole (712a). For example, the guide body (7131) may cover at least a portion of the first nozzle body (951). For example, the guide body (7131) may be configured to bend along the circumference of the water storage chamber housing (71). Accordingly, the flow guide (713) may guide water flowing from the water storage chamber (711) to the circulation pump (61) to circulate uniformly without generating turbulence.

[0203] The fluid guide (713) may include a guide body support (7132). The guide body support (7132) may protrude downward from the guide body (7131). The guide body support (7132) may be positioned on both sides of the guide body (7131) with respect to the circumferential direction of the water storage chamber housing (71). Thus, the guide body support (7132) may support the guide body (7131).

[0204] The flow guide (713) may include a guide groove (7133). The guide groove (7133) may be provided on the lower side of the guide body (7131). The guide groove (7133) may extend along the circumferential direction of the water storage chamber housing (71). The guide groove (7133) may be formed by the guide body (7131) and the guide body support (7132). The guide groove (7133) may be provided to allow water contained in the water storage chamber (711) to flow. For example, the water contained in the water storage chamber (711) may pass through the guide groove (7133) and flow to the circulation pump (61). The guide groove (7133) may be provided to allow water sprayed by the first cleaning nozzle (95) to pass through. For example, water sprayed by the first cleaning nozzle (95) can flow toward the first filter (310) without being blocked by the guide body (7131) or the guide body support (7132).

[0205] For example, the first injection port (951a) may be provided on the lower side of the guide body (7131). For example, the first injection port (951a) may be positioned at a height corresponding to the height of the guide groove (7133) in the vertical direction. For example, the first injection port (951a) may be provided in the form of a slit extending along the circumferential direction of the water storage chamber housing (71). For example, the length of the first injection port (951a) extending along the circumferential direction of the water storage chamber housing (71) may be shorter than the length of the guide groove (7133) extending along the circumferential direction of the water storage chamber housing (71). Accordingly, the water sprayed by the first cleaning nozzle (95) may not be blocked by the guide body (7131) or the guide body support (7132), but may pass through the guide groove (7133) and flow toward the first filter (310).

[0206] A dishwasher (1) according to one embodiment includes a tub (12), a water storage chamber housing (71) forming a water storage chamber (711) provided to store water under the tub (12), a filter (310) 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). The water storage chamber housing (71) includes a discharge hole (712a) provided to discharge water to the circulation pump (61). The above cleaning nozzle (95, 98) is arranged to spray water toward an area (311) that is positioned lower than or equal to the height of the discharge hole (712a) in the vertical direction of the filter (310).

[0207] The above cleaning nozzle (95) may be arranged to spray water toward an area (313a) facing the discharge hole (712a) based on a direction vertically penetrating the discharge hole (712a) in the filter (310).

[0208] The above-described water storage chamber housing (71) may include a circulation pump connection pipe (712) connected to the circulation pump (61), and having a discharge hole (712a) provided at one end thereof. The cleaning nozzle (95) may be arranged to spray water toward an area (313b) facing the discharge hole (712a) based on the direction in which the circulation pump connection pipe (712) extends from the filter (310).

[0209] The direction in which the above circulation pump connection pipe (712) extends may be a direction extending tangentially from one side of the inner surface of the water storage chamber housing (71) adjacent to the discharge hole (712a).

[0210] The above filter (310) may be provided in a cylindrical shape, and the cleaning nozzle (95, 98) may be provided to spray water in a direction toward the center of the filter (310).

[0211] The above cleaning nozzle (95) may be arranged adjacent to one side of the discharge hole (712a) to spray water in a direction away from the discharge hole (712a).

[0212] The above cleaning nozzle (95, 98) may include a slit (951a, 981a) provided to spray water.

[0213] The above slits (951a, 981a) can be arranged at the lower end of the side wall of the water storage chamber housing (71).

[0214] The above slits (951a, 981a) can extend along the circumferential direction of the water storage chamber housing (71).

[0215] The above guide pipe (93, 96) may be a first guide pipe (93). The above cleaning nozzle (95, 98) may be a first cleaning nozzle (95). 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 provided to spray water guided through the second guide pipe (96) toward the filter (310). The second cleaning nozzle (98) may be provided to spray water toward an area (311) that is arranged lower than or equal to the height of the discharge hole (712a) in the vertical direction of the filter (310).

[0216] The first cleaning nozzle (95) may include a first nozzle body (951) in which a first injection port (951a) is formed. The second cleaning nozzle (98) may include a second nozzle body (981) in which a second injection port (981a) is formed. The first nozzle body (951) and the second nozzle body (981) may each be disposed on a side wall of the water storage chamber housing (71). The discharge hole (712a) may be disposed on a side wall of the water storage chamber housing (71) and may be provided between the first nozzle body (951) and the second nozzle body (981) with respect to the circumferential direction of the water storage chamber housing (71).

[0217] The dishwasher (1) may further include a flow guide (713) that covers at least a portion of the discharge hole (712a) and is provided to guide water flowing from the water storage chamber (711) to the circulation pump (61).

[0218] The above-mentioned flow guide (713) may include a guide body (7131), a guide body support portion (7132) protruding downward from the guide body (7131) to support the guide body (7131), and a guide groove (7133) formed by the guide body (7131) and the guide body support portion (7132), and provided so that water contained in the water storage chamber (711) flows and provided so that water sprayed by the cleaning nozzle (95) passes through.

[0219] The above cleaning nozzle (95) includes a slit (951a) provided to spray water, and the slit (951a) can be provided on the lower side of the guide body (7131).

[0220] The above filter (310) may be a first filter (310). 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 (331a) to prevent the slits (951a, 981a) from being clogged by foreign substances passing through the second filter (330).

[0221] A dishwasher (1) according to one embodiment includes a tub (12), a water storage chamber housing (71) forming a water storage chamber (711) provided to store water under the tub (12), a filter (310) 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 received in the water storage chamber (711), a flow path (991, 992) 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 flow path (991, 992) toward the filter (310). The above cleaning nozzle (95, 98) includes a nozzle body (951, 981) disposed on the side wall of the water storage chamber housing (71) and a slit (951a, 981a) formed on the nozzle body (951, 981), extending along the circumferential direction of the water storage chamber housing (71), and provided to spray water toward the lower portion of the filter (310).

[0222] The above slit (951a, 981a) may be provided at the lower end of the nozzle body (951, 981).

[0223] The above dishwasher (1) may further include a valve (94, 97) configured to open or close the above-described euro (991, 992).

[0224] The above water storage chamber housing (71) includes a discharge hole (712a) provided to discharge water to the circulation pump (61), and the cleaning nozzle (95) may be provided to spray water toward an area (313a) facing the discharge hole (712a) based on a direction vertically penetrating the discharge hole (712a) in the filter (310).

[0225] The above water storage chamber housing (71) may include a discharge hole (712a) through which water is discharged to the circulation pump (61) and a circulation pump connection pipe (712) connected to the circulation pump (61) and having the discharge hole (712a) provided at one end thereof. The cleaning nozzle (95) may be provided to spray water toward an area (313b) facing the discharge hole (712a) based on the direction in which the circulation pump connection pipe (712) extends from the filter (310).

[0226] According to the invention, the usability of a dishwasher can be improved.

[0227] According to the present disclosure, a dishwasher can clean a filter without rotating the filter. Accordingly, additional components such as a motor for rotating the filter may be unnecessary.

[0228] According to the present invention, a dishwasher can clean a filter by spraying water intensively toward the lower part of the filter, which is the main contaminant area of ​​the filter. Accordingly, the filter cleaning efficiency can be improved.

[0229] 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.

[0230] 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 housing forming a water storage chamber arranged 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, The above water storage chamber housing includes a discharge hole provided to discharge water to the circulation pump, The above cleaning nozzle, A dishwasher configured to spray water toward an area positioned lower than or equal to the height of the discharge hole in the vertical direction of the filter.

2. In paragraph 1, The above cleaning nozzle, A dishwasher configured to spray water toward an area facing the discharge hole based on a direction vertically penetrating the discharge hole in the filter.

3. In paragraph 1, The above water storage chamber housing includes a circulation pump connecting pipe connected to the circulation pump, and the circulation pump connecting pipe has the discharge hole provided at one end thereof. The above cleaning nozzle, A dishwasher configured to spray water toward an area facing the discharge hole based on the direction in which the circulation pump connecting pipe extends from the filter.

4. In paragraph 3, A dishwasher in which the direction in which the above circulation pump connecting pipe extends is a direction in which the direction extends tangentially from one inner side of the water storage chamber housing adjacent to the discharge hole.

5. In paragraph 1, The above filter is provided in a cylindrical shape, A dishwasher wherein the cleaning nozzle is arranged to spray water in a direction toward the center of the filter.

6. In paragraph 1, A dishwasher in which the cleaning nozzle is arranged adjacent to one side of the discharge hole and is configured to spray water in a direction away from the discharge hole.

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

8. In paragraph 7, A dishwasher wherein the above slit is located at the lower end of the side wall of the water storage chamber housing.

9. In paragraph 8, A dishwasher wherein the above slit extends along the circumference of the water storage chamber housing.

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 Further comprising a second cleaning nozzle configured to spray water guided through the second guide pipe toward the filter, The above second cleaning nozzle, A dishwasher configured to spray water toward an area positioned lower than or equal to the height of the discharge hole in the vertical direction of the filter.

11. In paragraph 10, The first cleaning nozzle includes a first nozzle body in which a first nozzle opening is formed, The second cleaning nozzle includes a second nozzle body in which a second nozzle port is formed, The first nozzle body and the second nozzle body are each disposed on a side wall of the water storage chamber housing, The above discharge hole is, A dishwasher arranged on a side wall of the water storage chamber housing, and provided between the first nozzle body and the second nozzle body based on the circumferential direction of the water storage chamber housing.

12. In paragraph 1, A dishwasher further comprising a flow guide that covers at least a portion of the discharge hole, the flow guide being provided to guide water flowing into the circulation pump from the water storage chamber.

13. In paragraph 12, The above fluid guide is, Guide body; A guide body support portion protruding downward from the guide body to support the guide body; and A dishwasher comprising a guide groove formed by the guide body and the guide body support, wherein water contained in the water storage chamber flows and water sprayed by the cleaning nozzle passes through the guide groove.

14. In paragraph 13, The above cleaning nozzle includes a slit provided to spray water, A dishwasher in which the above slit is provided on the lower side of the above guide body.

15. 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.

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