Dishwasher

Abstract

This dishwasher comprises: a tub; a basket for accommodating dishes inside the tub; and a duct. The duct includes: an inlet which is provided in a duct frame, and is provided such that water can flow into a flow path through the inlet; an outlet which is provided in the duct frame, and is provided such that the water having flowed into the flow path through the inlet can be discharged from the flow path through the outlet so as to be sprayed toward the dishes accommodated in the basket within the tub; and ribs. The ribs surround at least a portion of the outlet inside the duct frame, reduces the speed of the water flowing in the flow path, and switches, to the outlet, the direction of at least a portion of the water flowing on the flow path.

Description

dishwasher

[0001] The present disclosure relates to a dishwasher.

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

[0003] A dishwasher may include a main body, a tub disposed inside the main body, a basket disposed inside the tub to store dishes, a spray unit configured to spray water onto the basket, and at least one duct for guiding water to the spray unit.

[0004] For example, at least one duct may be arranged to lead into or out of the tub together with the basket.

[0005] One aspect of the present disclosure provides a dishwasher capable of reducing water usage.

[0006] One aspect of the present disclosure provides a dishwasher having improved washing efficiency.

[0007] One aspect of the present disclosure provides a dishwasher comprising a duct having an improved structure.

[0008] One aspect of the present disclosure provides a dishwasher including a duct capable of reducing / preventing water pressure loss and vortex generation.

[0009] One aspect of the present disclosure provides a dishwasher including a duct capable of maintaining a uniform flow rate of water flowing through a plurality of outlets.

[0010] 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.

[0011] According to various embodiments of the present disclosure, a dishwasher includes a tub; a basket provided to receive dishes within the tub; and a duct. The duct includes an inlet provided within the duct frame, the inlet being provided such that water can flow into the channel through the inlet; an outlet provided within the duct frame, the outlet being provided such that water flowing into the channel through the inlet can flow out from the channel through the outlet to be sprayed toward the dishes received in the basket within the tub; and a rib. The rib surrounds at least a portion of the outlet within the duct frame, and is provided to reduce a speed of water flowing within the channel and to divert a direction of at least a portion of the water flowing within the channel toward the outlet.

[0012] According to various embodiments of the present disclosure, a dishwasher includes: a tub; a sump configured to receive water within the tub; a first duct configured to guide water supplied from the sump and having a shape extending in a first direction; a second duct configured to guide water supplied from the first duct and having a shape extending in a second direction intersecting the first direction; and a plurality of spray rotors rotatably coupled to the second duct and configured to spray water supplied from the second duct into the tub. The second duct includes: a duct body configured to have an open upper portion; a duct cover coupled to the duct body and covering an open upper portion of the duct body so as to form a flow path together with the duct body; an inlet configured to allow water to flow into the flow path from the first duct; and a plurality of outlets spaced apart from each other along the second direction, each outlet corresponding to a respective spray rotor and configured to allow water to flow out from the flow path. The cross-sectional area of ​​the flow path of the second duct is set to vary along the second direction.

[0013] FIG. 1 is a perspective view of a dishwasher according to one embodiment of the present disclosure.

[0014] FIG. 2 is a side cross-sectional view of a dishwasher according to one embodiment of the present disclosure.

[0015] FIG. 3 schematically illustrates a state in which a basket is inserted into a tub in a dishwasher according to one embodiment of the present disclosure.

[0016] FIG. 4 schematically illustrates a state in which a basket is withdrawn from a tub in a dishwasher according to one embodiment of the present disclosure.

[0017] FIG. 5 is a perspective view of a first duct, a second duct, and an injection rotor according to one embodiment of the present disclosure.

[0018] FIG. 6 is a perspective view of a first duct, a second duct, and an injection rotor according to one embodiment of the present disclosure.

[0019] FIG. 7 is an exploded perspective view of a first duct, a second duct, and an injection rotor according to one embodiment of the present disclosure.

[0020] FIG. 8 is an exploded perspective view of a first duct, a second duct, and an injection rotor according to one embodiment of the present disclosure.

[0021] FIG. 9 is an exploded perspective view of a first duct according to one embodiment of the present disclosure.

[0022] FIG. 10 is an enlarged view of a portion of a first duct according to one embodiment of the present disclosure.

[0023] Figure 11a is a cross-sectional view taken along line Ⅰ-Ⅰ' shown in Figure 5.

[0024] Figure 11b is a cross-sectional view taken along line Ⅱ-Ⅱ' shown in Figure 5.

[0025] Figure 11c is a cross-sectional view taken along line Ⅲ-Ⅲ' shown in Figure 5.

[0026] FIG. 12 is a side cross-sectional view of a first duct, a second duct, and an injection rotor according to one embodiment of the present disclosure.

[0027] Figure 13 is an enlarged view of part A shown in Figure 12.

[0028] FIG. 14 is a cutaway perspective view of a portion of a dishwasher according to one embodiment of the present disclosure.

[0029] Figure 15 is an enlarged view of part B shown in Figure 12.

[0030] 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 encompass various modifications, equivalents, or alternatives of the embodiments.

[0031] In connection with the description of the drawings, similar reference numerals may be used for similar or related components.

[0032] 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.

[0033] In this document, phrases such as "A or B", "at least one of A and / or B", "one or more of A and / or B", "A, B, or C", "at least one of A and B", "at least one of A and B", "at least one of A and B", "at least one of A and B", "at least one of A and B", "at least one of A, B, and / or C", and "one or more of A, B, and / or C" can each include any one of the items listed together in that phrase, or all possible combinations thereof. For example, "at least one of A, B, and C" can include A, B, C, A and B, A and C, B and C, A and B and C.

[0034] The term "and / or" includes any combination of a plurality of related described elements or any one of a plurality of related described elements.

[0035] 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.

[0036] 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).

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] The terms "front", "back", "left", "right", "upper", "lower", etc. used in the following description are defined based on the drawings, and the shape and position of each component are not limited by these terms. For example, "front" and "back" may each be defined based on the X-axis illustrated in the drawings. For example, "left" and "right" may each be defined based on the Y-axis illustrated in the drawings. For example, "upper" and "lower" may each be defined based on the Z-axis illustrated in the drawings.

[0042] For example, referring to FIGS. 1 and 2, the direction in which the door (11) of the dishwasher (1) faces can be defined as forward (+X direction), and the opposite direction can be defined as rearward (-X direction).

[0043] Hereinafter, an embodiment according to the present invention will be described with reference to the attached drawings.

[0044] FIG. 1 is a perspective view of a dishwasher according to one embodiment of the present disclosure. FIG. 2 is a side cross-sectional view of a dishwasher according to one embodiment of the present disclosure.

[0045] 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).

[0046] The dishwasher (1) may include a tub (12) provided inside the main body (10). The tub (12) may form a washing room (10a). The tub (12) may be provided in an approximately box shape. One side of the tub (12) may be open. That is, the tub (12) may include an opening (12a). For example, the front side of the tub (12) may be open.

[0047] 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).

[0048] 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 store 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 store not only dishes but also various items that can be washed within the washing room (10a).

[0049] The storage container (50) may include at least one basket for storing tableware. The storage container (50) may include at least one rack assembly for storing tableware. 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.

[0050] 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 dishes. 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.

[0051] 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 provided to be withdrawn from the tub (12) or introduced into the tub (12). The intermediate basket (52) may be provided to slide by a guide rail (13b). For example, the intermediate basket (52) may be provided to be supported by the intermediate guide rail (13b). For example, the intermediate guide rail (13b) may be provided to be movable approximately along the front-back direction (X direction) with respect to the tub (12).

[0052] 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 by the tub (12). For example, the lower basket (51) may include a basket roller (51a), and the basket roller (51a) may be provided to move along a support portion (12d) formed at the lower portion of a side wall of the tub (12). For example, the support portion (12d) may extend approximately along the front-rear direction (X direction). For example, the support portion (12d) may be formed to be stepped from the lower surface (12b) of the tub (12). However, the present disclosure is not limited to the examples described above, and as an example, the lower basket (51) may be provided to be slidable by a separate guide rail.

[0053] A plurality of baskets (51, 52) can store relatively large dishes. However, the types of dishes stored in the plurality of baskets (51, 52) are not limited to relatively large dishes. That is, the plurality of baskets (51, 52) can store not only relatively large dishes but also relatively small dishes.

[0054] 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.

[0055] The upper basket (53) may be provided to be withdrawn from the tub (12) or introduced into the tub (12). The upper basket (53) may be slidably moved by an upper guide rail (13c). For example, the upper basket (53) may be provided to be supported by the upper guide rail (13c). For example, the upper guide rail (13c) may be provided to be movable approximately along the front-back direction (X direction) with respect to the tub (12). For example, the upper guide rail (13c) may be provided to be slidably moved approximately along the front-back direction (X direction) by a fixed roller (12e, see FIGS. 3 and 4) fixed to a side surface (12c) of the tub (12).

[0056] The lower basket (51), middle basket (52), and upper basket (53) are named based on their relative positions for the convenience of explanation, and the expressions "lower," "middle," and "upper" do not limit the positions of the baskets. Hereinafter, for the convenience of explanation, the upper basket (53) may be referred to as a basket (53), and it goes without saying that the description of the basket (53) can be applied to all configurations for storing dishes.

[0057] A dishwasher (1) may include a washing room (10a). The washing room (10a) may be formed inside 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 dishes placed in a storage container (50) can be washed and dried.

[0058] The dishwasher (1) may include a spray device (40) configured to spray water. Here, water refers to water for washing dishes, and may refer to both water mixed with detergent and / or rinse agent and water not mixed with detergent and / or rinse agent. The spray device (40) may spray water into the tub (12). The spray device (40) may spray water into the washing chamber (10a). 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) and / or at least one duct (100, 200, 300 and / or 400) described below.

[0059] The injection device (40) may include at least one injection unit. The injection device (40) may include one injection unit or a plurality of injection units (41, 42, 43, 500).

[0060] For example, the spray device (40) may include a first spray unit (41) positioned below 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 supplied directly to the first spray unit (41).

[0061] For example, the spray device (40) may include a second spray unit (42) positioned below the middle basket (52) in the height direction of the dishwasher (1). For example, the second spray unit (42) is connected to at least one duct (e.g., duct (300)), and water inside the sump (70) may be supplied to the second spray unit (42) through at least one duct (e.g., duct (300) and duct (400)).

[0062] For example, the spray device (40) may include a third spray unit (43) positioned above the upper basket (53) in the height direction of the dishwasher (1). For example, the third spray unit (43) is connected to at least one duct (e.g., duct (400)), and water inside the sump (70) may be supplied to the third spray unit (43) through at least one duct (e.g., duct (400)).

[0063] For example, the injection device (40) may include a fourth injection unit (500). For example, the fourth injection unit (500) is connected to at least one duct (e.g., duct (100)), and water inside the sump (70) may be supplied to the fourth injection unit (500) through at least one duct (e.g., duct (100) and duct (200)). A detailed description of the fourth injection unit (500) will be provided below.

[0064] 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 five or more injection units.

[0065] Each of the plurality of spray units (41, 42, 43, 500) may be configured to spray water while rotating. Each of the plurality of spray units (41, 42, 43, 500) may be referred to as a spray rotor. Hereinafter, for convenience of explanation, the fourth spray unit (500) will be referred to as a spray rotor (500).

[0066] However, the spray device (40) may spray water in a manner different from that described above. For example, the first spray unit (41) may be fixed to the lower surface (12b) of the tub (12). At this time, the first spray unit (41) is provided 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 provided to be able to move translationally along the rail. Meanwhile, although the first spray unit (41) has been described as an example, other spray units may also be provided to spray water using a fixed nozzle, similar to the above-described example.

[0067] 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 from the washing room (10a). For example, to ensure smooth water collection in the sump (70), the lower surface (12b) of the tub (12) may be provided to slope downward toward the sump (70). Water from the washing room (10a) may flow along the slope of the lower surface (12b) of the tub (12) and smoothly flow into the sump (70).

[0068] The dishwasher (1) may include a circulation pump (71) configured to pump water stored in a sump (70). The water pumped by the circulation pump (71) may flow into at least one duct (e.g., duct (200), duct (400)). For example, the circulation pump (71) may be placed in the machine room (10b).

[0069] The dishwasher (1) may include a drain pump (72) that drains water and / or foreign substances (e.g., food waste, etc.) remaining in the sump (70). The water pumped by the drain pump (72) may be discharged outside the main body (10). For example, the drain pump (72) may be placed in the machine room (10b).

[0070] The dishwasher (1) may include a machine room (10b) provided below the tub (12). The machine room (10b) may be located below the washing room (10a). A structure for circulating and / or draining water may be located in the machine room (10b). A structure (e.g., piping) for guiding water may be located in the machine room (10b). The dishwasher (1) may include a base frame (16) forming the machine room (10b).

[0071] For example, at least a portion of the sump (70) may be placed in the machine room (10b). Most of the sump (70) may be placed in the machine room (10b). That is, the area of ​​the sump (70) located in the washing room (10a) may be smaller than the area of ​​the sump (70) located in the machine room (10b). By reducing the area of ​​the sump (70) occupying the washing room (10a), the area of ​​the washing room (10a) can be secured. Thereby, the capacity of the washing room (10a) can be increased, and the dish storage capacity can be improved.

[0072] The dishwasher (1) may include a filter assembly (60). The filter assembly (60) may be provided to filter foreign substances contained in water flowing into the sump (70). Water filtered through the filter assembly (60) may be pumped by a circulation pump (71) and provided to a spray device (40) and / or at least one duct (100, 200, 300 and / or 400). The filter assembly (60) may be detachably mounted to the sump (70). For example, the filter assembly (60) may include at least one of a fine filter, a coarse filter, or a micro filter.

[0073] The dishwasher (1) may include at least one duct (100, 200, 300 and / or 400). The at least one duct (100, 200, 300 and / or 400) may be arranged inside the tub (12). The at least one duct (100, 200, 300 and / or 400) may be arranged in the washing chamber (10a). The at least one duct (100, 200, 300 and / or 400) may guide water. The at least one duct (100, 200, 300 and / or 400) may guide water supplied from a sump (70). The at least one duct (100, 200, 300 and / or 400) may deliver water supplied from the sump (70) to a spray device (40). A detailed description of the duct will be provided later.

[0074] FIG. 3 schematically illustrates a state in which a basket is inserted into a tub in a dishwasher according to one embodiment of the present disclosure. FIG. 4 schematically illustrates a state in which a basket is withdrawn from a tub in a dishwasher according to one embodiment of the present disclosure.

[0075] Referring to FIGS. 3 and 4, the dishwasher (1) may include at least one duct (100, 200, 300, and / or 400). At least one duct (100, 200, 300, and / or 400) may guide water. At least one duct (100, 200, 300, and / or 400) may provide water to a spray device (40).

[0076] The dishwasher (1) may include a first duct (100). The first duct (100) may be provided to guide water within the tub (12). The first duct (100) may be connected to a second duct (200). The first duct (100) may receive water from the second duct (200). The first duct (100) may guide the water supplied from the second duct (200). The first duct (100) may guide the water supplied from the second duct (200) to the spray rotor (500). The first duct (100) may supply water to the spray rotor (500). Water flowing out from the first duct (100) may flow to the spray rotor (500).

[0077] For example, the first duct (100) may include a shape extending along a first direction (D1). For example, the first duct (100) may include a shape extending along a direction in which the basket (53) moves. For example, the first duct (100) may include a shape extending approximately along a front-back direction (X direction). For example, the first direction (D1) may correspond to the direction in which the basket (53) moves.

[0078] The dishwasher (1) may include a second duct (200). The second duct (200) may be provided to guide water within the tub (12). The second duct (200) may be connected to a sump (70). The second duct (200) may receive water from the sump (70). The second duct (200) may guide water supplied from the sump (70). The second duct (200) may guide water supplied from the sump (70) to the first duct (100). The second duct (200) may supply water to the first duct (100). Water flowing out from the second duct (200) may flow into the first duct (100).

[0079] For example, the second duct (200) may include a shape extending along a second direction (D2). For example, the second direction (D2) may be a direction intersecting the first direction (D1). For example, the second duct (200) may include a shape extending along a substantially vertical direction (Z direction). For example, the second duct (200) may include a duct frame (210) that forms a flow path for guiding water. The duct frame (210) may include a first frame portion (211) that is connected to the sump (70) and extends approximately along the first direction (D1) and a second frame portion (212) that extends from the first frame portion (211) approximately along the second direction (D2). However, the present disclosure is not limited to the examples described above, and the second duct (200) may of course include various shapes to deliver water to the first duct (100).

[0080] The dishwasher (1) may include a third duct (300). The third duct (300) may be provided to guide water within the tub (12). The third duct (300) may be connected to a fourth duct (400). The third duct (300) may receive water from the fourth duct (400). The third duct (300) may guide water supplied from the fourth duct (400). The third duct (300) may guide water supplied from the fourth duct (400) to a second spray unit (42). The third duct (300) may supply water to the second spray unit (42). Water flowing out from the third duct (300) may flow to the second spray unit (42).

[0081] For example, the third duct (300) may include a shape extending along the first direction (D1). For example, the third duct (300) may include a shape extending approximately along the front-back direction (X direction).

[0082] The dishwasher (1) may include a fourth duct (400). The fourth duct (400) may be provided to guide water within the tub (12). The fourth duct (400) may be connected to a sump (70). The fourth duct (400) may receive water from the sump (70). The fourth duct (400) may guide water received from the sump (70) to a third duct (300) and / or a third spray unit (43). The fourth duct (400) may guide water received from the sump (70) to the third duct (300) and / or the third spray unit (43). The fourth duct (400) may provide water to the third duct (300) and / or the third spray unit (43). Water flowing out of the fourth duct (400) can flow to the third duct (300) and / or the third injection unit (43).

[0083] For example, the fourth duct (400) may include a shape extending approximately along the first direction (D1) and a shape extending approximately along the second direction (D2). However, the present disclosure is not limited to the above-described example, and the fourth duct (400) may of course include various shapes to deliver water to at least one of the third duct (300) and the third injection unit (43).

[0084] The first duct (100), the second duct (200), the third duct (300), and the fourth duct (400) are not limited in their configuration by the ordinal numbers "first," "second," "third," and "fourth." For example, the first duct (100) may be referred to as the second duct (100), and the second duct (200) may be referred to as the first duct (200).

[0085] In the drawing, the dishwasher (1) is depicted as including four ducts (100, 200, 300, 400), but there is no limitation on the number of ducts. The dishwasher (1) may include additional ducts in addition to the four ducts (100, 200, 300, 400). At least some of the four ducts (100, 200, 300, 400) may be provided as one piece.

[0086] The dishwasher (1) may include a spray rotor (500). The spray rotor (500) may be configured to spray water inside the tub (12). The spray rotor (500) may spray water supplied from the first duct (100) into the inside of the tub (12). The spray rotor (500) may spray water supplied from the first duct (100) toward dishes. The spray rotor (500) may be rotatably coupled to the first duct (100). The spray rotor (500) may spray water while rotating. The rotation speed of the spray rotor (500) may vary depending on the flow rate of water supplied from the first duct (100) to the spray rotor (500). In the drawing, six spray rotors (500) are illustrated, but there is no limitation on the number of spray rotors (500).

[0087] Referring to FIGS. 3 and 4, the basket (53) may be provided to be insertable into the tub (12) or withdrawable from the tub (12). The first duct (100) may be provided to be insertable into the tub (12) or withdrawable from the tub (12). The spray rotor (500) may be provided to be insertable into the tub (12) or withdrawable from the tub (12).

[0088] The first duct (100) can be detachably coupled to the basket (53). The first duct (100) can fix the basket (53). The first duct (100) can be configured to be movable while coupled to the basket (53). For example, the first duct (100) can move approximately along the first direction (D1) (e.g., the forward-backward direction (X direction)) while coupled to the basket (53).

[0089] The first duct (100) can be introduced into the tub (12) together with the basket (53). The first duct (100) can be coupled to the second duct (200) by being introduced into the tub (12) together with the basket (53). As the basket (53) is introduced into the tub (12), the first duct (100) can be arranged to be docked to the second duct (200). The first duct (100) can be arranged to be docked to the second duct (200) by moving approximately along the first direction (D1). For example, the first duct (100) can be docked to the second duct (200) by moving approximately rearward (-X direction). While the first duct (100) and the second duct (200) are docked, water inside the second duct (200) can flow into the first duct (100).

[0090] The first duct (100) can be withdrawn from the tub (12) together with the basket (53). The first duct (100) can be separated from the second duct (200) by being withdrawn from the tub (12) together with the basket (53). As the basket (53) is withdrawn from the tub (12), the first duct (100) can be arranged to be undocked from the second duct (200). The first duct (100) can be arranged to be undocked from the second duct (200) by moving approximately along the first direction (D1). For example, the first duct (100) can be undocked from the second duct (200) by moving approximately forward (in the +X direction).

[0091] The spray rotor (500) can be detachably coupled to the first duct (100). The spray rotor (500) can be fixed to the first duct (100). The spray rotor (500) can be configured to be movable while coupled to the first duct (100). When the first duct (100) is coupled to the basket (53) and the spray rotor (500) is coupled to the first duct (100), when the basket (53) is introduced into and / or withdrawn from the tub (12), the spray rotor (500) can move together with the first duct (100) and the basket (53).

[0092] The dishwasher (1) may include a sealing member (80). The sealing member (80) may be provided to seal between the first duct (100) and the second duct (200). The sealing member (80) may be provided to prevent water from leaking between the first duct (100) and the second duct (200). The sealing member (80) may be mounted on the second duct (200). For example, the sealing member (80) may include a ring shape.

[0093] FIG. 5 is a perspective view of a first duct, a second duct, and a spray rotor according to an embodiment of the present disclosure. FIG. 6 is a perspective view of a first duct, a second duct, and a spray rotor according to an embodiment of the present disclosure. FIG. 7 is an exploded perspective view of a first duct, a second duct, and a spray rotor according to an embodiment of the present disclosure. FIG. 8 is an exploded perspective view of a first duct, a second duct, and a spray rotor according to an embodiment of the present disclosure.

[0094] Referring to FIGS. 5 to 8, a dishwasher (1) according to one embodiment of the present disclosure may include a first duct (100), a second duct (200), and a spray rotor (500).

[0095] The first duct (100) and the second duct (200) can be detachably coupled. The first duct (100) and the injection rotor (500) can be detachably coupled. The injection rotor (500) can be rotatably coupled to the first duct (100).

[0096] The first duct (100) may include a duct frame (110). The duct frame (110) may form a flow path (110f, see FIG. 9). Water may flow along the flow path (110f). The duct frame (110) may form the overall appearance of the first duct (100). The duct frame (110) may extend approximately along the first direction (D1).

[0097] The first duct (100) may include an inlet (120). The inlet (120) may be configured to receive water. The inlet (120) may be formed in the duct frame (110) to allow water to flow into the flow path (110f). Water flowing out from the second duct (200) may flow into the flow path (110f) through the inlet (120). While the first duct (100) and the second duct (200) are coupled to each other, the inlet (120) may be communicated with an outlet (230) of the second duct (200), which will be described later. For example, the inlet (120) may be opened rearward (in the -X direction).

[0098] The first duct (100) may include an outlet (130). The outlet (130) may be configured to discharge water. The outlet (130) may be formed in the duct frame (110) so that water may flow out from the flow path (110f). Water in the flow path (110f) may flow to the spray rotor (500) through the outlet (130). While the first duct (100) and the spray rotor (500) are coupled to each other, the outlet (130) may be in communication with the interior of the spray rotor (500). For example, the outlet (130) may be opened downward (in the -Z direction).

[0099] For example, a plurality of outlets (130) may be provided. The plurality of outlets (130) may be spaced apart along the flow direction (F) of water flowing in the flow path (110f). The plurality of outlets (130) may be spaced apart along the first direction (D1). The plurality of outlets (130) may be arranged along the first direction (D1). Each of the plurality of outlets (130) may correspond to each of the plurality of injection rotors (500). However, the present disclosure is not limited to the above-described examples, and there is no limitation on the number of outlets (130).

[0100] The first duct (100) may include a first holder (150). The first holder (150) may include an outlet (130). The first holder (150) may form the outlet (130). The first holder (150) may be arranged to surround the outlet (130). The first holder (150) may be formed at the lower portion of the duct frame (110). The first holder (150) may extend downward from the duct frame (110). The first holder (150) may rotatably support the upper portion of the spray rotor (500). The upper portion of the spray rotor (500) may be rotatably coupled to the first holder (150).

[0101] The first duct (100) may include a second holder (160). The second holder (160) may be spaced apart from the first holder (150). The second holder (160) may be formed at the lower portion of the duct frame (110). The second holder (160) may extend downward from the duct frame (110). The second holder (160) may rotatably support the lower portion of the spray rotor (500). The lower portion of the spray rotor (500) may be rotatably coupled to the second holder (150).

[0102] The second duct (200) may include a duct frame (210). The duct frame (110) may form a flow path for guiding water. The duct frame (210) may form the overall appearance of the second duct (200). The duct frame (110) may be referred to as a first duct frame (110), and the duct frame (210) may be referred to as a second duct frame (210). However, the ordinal numbers "first" and "second" are merely for distinguishing between configurations and do not limit the configurations.

[0103] For example, the duct frame (210) may include a first frame portion (211) connected to the sump (70) and a second frame portion (212) extending from the first frame portion (211).

[0104] For example, the duct frame (210) may include a flange (213). The flange (213) may be formed on the second frame portion (212). The flange (213) may protrude from the second frame portion (212). The flange (213) may include an outlet (230) to be described later. The flange (213) may form the outlet (230). The flange (213) may include a portion connected to the first duct (100). For example, the flange (213) may include a hollow shape. The sealing member (80) may be detachably coupled to the flange (213). The sealing member (80) may be coupled to the flange (213) so as to surround an outer circumferential surface of the flange (213).

[0105] The second duct (200) may include an inlet (not shown). The inlet of the second duct (200) may be provided to receive water from the sump (70). The water in the sump (70) may flow into the duct frame (210) through the inlet of the second duct (200). For example, the inlet of the second duct (200) may be formed at the lower portion of the first frame portion (211). For example, the inlet of the second duct (200) may be opened downward. For the purpose of distinguishing between the configurations, the inlet (120) of the first duct (100) may be referred to as a first inlet (120), and the inlet of the second duct (200) may be referred to as a second inlet.

[0106] The second duct (200) may include an outlet (230). The outlet (230) may be formed in the duct frame (210) and configured to discharge water. Water within the flow path of the second duct (200) may flow into the first duct (100) through the outlet (230). While the first duct (100) and the second duct (200) are coupled to each other, the outlet (230) may be in communication with the inlet (120). For example, the outlet (230) may be opened forward. To distinguish between the configurations, the outlet (130) of the first duct (100) may be referred to as a first outlet (130), and the outlet (230) of the second duct (200) may be referred to as a second outlet (230).

[0107] The spray rotor (500) may include a communication port (510). The communication port (510) may be open toward the outlet (130). The communication port (510) may receive water flowing out from the outlet (130). The water flowing out from the outlet (130) may flow into the spray rotor (500) through the communication port (510). For example, the communication port (510) may be open upward.

[0108] The spray rotor (500) may include a spray port (520). The spray port (520) may discharge water inside the spray rotor (500). While the spray rotor (500) rotates with respect to the first duct (100), the spray port (520) of the spray rotor (500) may spray water toward the dishes.

[0109] Fig. 9 is an exploded perspective view of a first duct according to one embodiment of the present disclosure. Fig. 10 is an enlarged view of a portion of the first duct according to one embodiment of the present disclosure.

[0110] The duct frame (110) may include a duct body (111). The duct body (111) may be provided such that the upper portion of the duct body (111) is open. The duct body (111) may include a bottom (111a) and a side wall (111b) extending upward from the bottom (111a). The duct body (111) may form a space surrounded by the bottom (111a) and the side wall (111b), and the space of the duct body (111) may form a part of a flow path (110f).

[0111] The duct frame (110) may include a duct cover (112). The duct cover (112) may be provided to cover the upper portion of the open duct body (111). The duct cover (112) may be coupled to the duct body (111). The duct cover (112) may form a flow path (110f) together with the duct body (111).

[0112] The duct cover (112) may include a downwardly inclined shape to cause water formed on the surface of the duct cover (112) to fall. For example, the duct cover (112) may include at least one inclined surface (112a and / or 112b). For example, the duct cover (112) may include a first inclined surface (112a) and a second inclined surface (112b), and the first inclined surface (112a) and the second inclined surface (112b) may be symmetrical to each other. Tableware such as cups stored in the basket (53) may be supported by at least one inclined surface (112a and / or 112b) of the duct cover (112).

[0113] The duct body (111) and the duct cover (112) can be joined using heat. For example, the duct body (111) and the duct cover (112) can be heat-welded. The duct body (111) and the duct cover (112) can be formed as a single body by heat-welding. For example, the upper edge of the duct body (111) can be joined to the lower edge of the duct cover (112).

[0114] Typically, ducts can have a shape extending in one direction to guide water. Ducts can be manufactured using injection molding. However, in this case, the cross-sectional shape of the duct is limited, and the outlet for discharging water may have sharp edges. Furthermore, forming ribs or other features within the duct is extremely difficult.

[0115] However, according to the present disclosure, the duct body (111) and the duct cover (112) may be manufactured separately and then heat-welded. Accordingly, the cross-sectional shape of the first duct (100) may be relatively diverse. In addition, when manufacturing the duct body (111), a curved shape may be added around the outlet (130), thereby minimizing water pressure loss and vortex generation. It is relatively easy to form a rib (140), which will be described later, inside the first duct (100).

[0116] The duct frame (110) may include a flange (113). The flange (113) may include an inlet (120, see FIGS. 7, 8, and 10). The flange (113) may form the inlet (120). The flange (113) may be configured to be coupleable to the second duct (200). Specifically, the flange (113) of the first duct (100) may be arranged to be docked and undocked with the flange (213) of the second duct (200). For example, the flange (113) may extend rearward from a portion of the duct body (111). For example, the flange (113) may include a hollow shape. For purposes of distinction between the configurations, the flange (113) of the first duct (100) may be referred to as the first flange (113), and the flange (213) of the second duct (200) may be referred to as the second flange (213).

[0117] The duct frame (110) may include an inclined portion (114). The inclined portion (114) may connect the flange (113) and the duct body (111). The inclined portion (114) may connect a portion of the flange (113) and a portion of the duct body (111). The inclined portion (114) may connect the lower portion of the flange (113) and the lower portion of the duct body (111). The inclined portion (114) may extend from the lower portion of the flange (113) to the bottom (111a) of the duct body (111). The inclined portion (114) may include a shape that slopes upward from the flange (113) toward the duct body (111).

[0118] Referring to FIG. 10, the first duct (100) may include a rib (140). The rib (140) may be positioned inside the duct frame (110). The rib (140) may be positioned in the flow path (110f). The rib (140) may be formed in the duct body (111). The rib (140) may extend upward from the bottom (111a) of the duct body (111).

[0119] The rib (140) may be arranged to surround at least a portion of the outlet (130). The rib (140) may be arranged to surround at least a portion of an outlet (130a) adjacent to the inlet (120) among the plurality of outlets (130). The rib (140) may be arranged adjacent to the outlet (130a). At least a portion of the rib (140) may be arranged downstream of the outlet (130a) based on the flow direction (F) of water flowing in the flow path (110f).

[0120] The rib (140) may be configured to reduce the speed of water flowing through the flow path (110f). It may also be configured to change the direction of water flowing through the flow path (110f). Thus, the rib (140) may control the flow rate of water discharged through an outlet (130a) adjacent to the inlet (120) among the plurality of outlets (130). For example, the rib (140) may include an arc shape, thereby preventing / suppressing / reducing the generation of eddies within the flow path (110f).

[0121] A detailed description of the rib (140) will be provided later.

[0122] Fig. 11a is a cross-sectional view taken along line Ⅰ-Ⅰ' shown in Fig. 5. Fig. 11b is a cross-sectional view taken along line Ⅱ-Ⅱ' shown in Fig. 5. Fig. 11c is a cross-sectional view taken along line Ⅲ-Ⅲ' shown in Fig. 5.

[0123] Referring to FIGS. 11a, 11b, and 11c, the cross-sectional area of ​​the flow path (110f) of the first duct (100) may be configured to vary. The cross-sectional area of ​​the flow path (110f) of the first duct (100) may be configured to vary along the first direction (D1). The first duct (100) may include a shape in which the cross-sectional area of ​​the flow path (110f) decreases along the flow direction (F) of water flowing through the flow path (110f). For example, the cross-sectional area of ​​the flow path (110f) of the first duct (100) may decrease along the forward (+X direction). For example, when comparing the cross-sectional areas of the flow path (110f) based on the lines shown in FIG. 5, the first cross-sectional area (A1) of the flow path (110f) may be larger than the second cross-sectional area (A2) of the flow path (110f), and the second cross-sectional area (A2) of the flow path (110f) may be larger than the third cross-sectional area (A3) of the flow path (110f). Accordingly, the flow rate of water flowing out through the plurality of outlets (130) may be uniform. In addition, the volume of the first duct (100) may be reduced, thereby reducing the water usage of the dishwasher (1).

[0124] In general, when the cross-sectional area of ​​the duct flow path is the same, the water flow rate is high and the water velocity is fast in the part where the water flows in, so the dynamic pressure may be high. On the other hand, the water flow rate is low and the water velocity is slow in the part far from the part where the water flows in, so the dynamic pressure may be low. For reference, according to Bernoulli's law, the dynamic pressure may increase in proportion to the square of the velocity of the fluid. If the cross-sectional area of ​​the duct is assumed to be the same, the dynamic pressure is high in the part close to the inlet, so the water may flow along the duct rather than flow out through the outlet, and the dynamic pressure is low in the part far from the inlet, so a large amount of water may flow out through the outlet. In other words, the flow rate of water flowing out through multiple outlets may not be uniform. Consequently, the flow rate of water sprayed from the spray device may also not be uniform. In this case, water may not be sprayed on some of the dishes stored in the basket.

[0125] However, according to the present disclosure, the cross-sectional area of ​​the flow path (110f) may be arranged to decrease along the water flow direction (F). That is, the cross-sectional area may be relatively large where the water flow rate is large, and may be relatively small where the water flow rate is small. Accordingly, the speed of the water flowing along the flow path (110f) may be maintained uniformly, and the flow rate of the water discharged through the plurality of outlets (130) may also be maintained uniformly. The plurality of spray rotors (500) may evenly spray water onto dishes stored in the basket (53). Consequently, the washing efficiency of the dishwasher (1) may be improved.

[0126] FIG. 12 is a cross-sectional side view of a first duct, a second duct, and a spray rotor according to an embodiment of the present disclosure. FIG. 13 is an enlarged view of portion A shown in FIG. 12. FIG. 14 is a cutaway perspective view of a portion of a dishwasher according to an embodiment of the present disclosure. FIG. 15 is an enlarged view of portion B shown in FIG. 12.

[0127] The flow of water will be exemplarily described with reference to FIGS. 12 to 15. Water guided by the second duct (200) can flow to the first duct (100). The first duct (100) can guide water supplied from the second duct (200). The water guided by the first duct (100) can flow to the plurality of spray rotors (500) through the plurality of outlets (130). Each of the spray rotors (500) receives water flowing out through each of the outlets (130) and can spray the supplied water toward the dishes.

[0128] According to one embodiment of the present disclosure, the inner diameter (I) of the flange (113) may be greater than or equal to the distance (H) (hereinafter, referred to as the height (H) of the flow path (110f)) in the vertical direction (Z direction) between the inner surface of the duct body (111) and the inner surface of the duct cover (112). For example, the inner diameter (I) may be based on the smallest value, and the distance (H) may be based on the largest value. The flange (113) of the first duct (100) is a portion connected to the second flange (213) of the second duct (200). When the inner diameter (I) of the flange (113) is greater than a predetermined range, the bonding force between the first duct (100) and the second duct (200) may be increased. In addition, when the inner diameter (I) of the flange (113) is larger than a predetermined range, the size of the inlet (120) may also be larger than a predetermined range, and the water pressure loss may be reduced.

[0129] According to one embodiment of the present disclosure, one side (113a) of the flange (113) adjacent to the duct body (111) may be positioned lower than the duct cover (112). A portion including one side (113a) of the flange (113) may be positioned lower than the duct cover (112). The upper portion of the flange (113) may not be positioned higher than the upper portion of the duct cover (112). Accordingly, when the duct cover (112) is coupled to the duct body (111), the flange (113) may not interfere with the duct cover (112).

[0130] According to one embodiment of the present disclosure, a portion including one side (113a) of the flange (113) is positioned lower than the duct cover (112), and the inner diameter (I) of the flange (113) may be greater than or equal to the height (H) of the flow path (110f). With this shape, an inclined portion (114) for connecting the flange (113) and the duct body (111) may be formed.

[0131] The inclined portion (114) may be inclined upward from the lower portion of the flange (113) toward the bottom (111a) of the duct body (111). The inclined portion (114) may be arranged around an outlet (130a) adjacent to an inlet (120) among the plurality of outlets (130). For example, the inclined portion (114) may be arranged upstream of an outlet (130a) adjacent to an inlet (120) among the plurality of outlets (130). For example, the inclined portion (114) may be arranged on the rear side of an outlet (130a) adjacent to an inlet (120) among the plurality of outlets (130).

[0132] Referring to FIGS. 12 to 14, the first duct (100) may include a rib (140). The rib (140) may be arranged adjacent to the outlet (130) to reduce the speed of water flowing through the flow path (110f) and to change the direction of water flowing through the flow path (110f).

[0133] According to one embodiment of the present disclosure, the rib (140) can help maintain a uniform flow rate of water flowing out through the plurality of outlets (130). In the area adjacent to the inlet (120), the flow rate of water is large and the velocity of the water is high, which may result in high dynamic pressure. In addition, the velocity of the water flowing along the slope (114) may be relatively high. The water may flow at a high velocity due to the inclination of the slope (114), and the dynamic pressure may also be high. When the dynamic pressure is high, the water may flow along the flow path (110f) rather than flowing out to the outlet (130a). The rib (140) is arranged downstream of the outlet (130a) to reduce the velocity of the water flowing in the flow path (110f) and to change the direction of the water flowing in the flow path (110f). The water, whose velocity is reduced by the rib (140), may flow smoothly to the outlet (130a). Water diverted by the rib (140) can be directed toward the outlet (130a). That is, the rib (140) can guide water toward the first outlet (130a). Since the first duct (100) has the rib (140), the flow rate of water flowing out to the outlet (130a) can be secured.

[0134] Referring to FIG. 15, the outlet (130) may be formed to penetrate the bottom (111a) of the duct body (111). The bottom (111a) of the duct body (111) may include a shape that slopes downward toward the outlet (130). Accordingly, water within the flow path (110f) may flow smoothly toward the outlet (130). Residual water within the flow path (110f) may flow along the bottom (111a) of the duct body (111) and be discharged through the outlet (130).

[0135] According to one embodiment of the present disclosure, a curved portion (R) may be formed around the outlet (130). The curved portion (R) may be formed between the bottom (111a) of the duct body (111) and the holder (150). As a result, the pressure loss of water discharged through each of the plurality of outlets (130) may be reduced, and the generation of vortexes may be prevented / suppressed.

[0136] A dishwasher (1) according to one embodiment of the present disclosure includes a tub (12); a basket (53) provided to receive dishes inside the tub (12); and a duct (100). The duct (100) includes a duct frame (110) forming a flow path (110f); an inlet (120) provided within the duct frame (110) such that water can flow into the flow path (110f) through the inlet (120); an outlet (130) provided within the duct frame (110) such that water flowing into the flow path (110f) through the inlet (120) can flow out from the flow path (110f) through the outlet (130) so as to be sprayed toward the dishes received in the basket (53) within the tub (12); and a rib (140); The rib (140) surrounds at least a portion of the outlet (130) inside the duct frame (110). The rib (140) is provided to reduce the speed of water flowing within the flow path (110f) and to divert the direction of at least a portion of the water flowing within the flow path (110f) toward the outlet (130).

[0137] The above outlet (130) may be each outlet (130) among a plurality of outlets (130) provided within the duct frame (110). Each outlet (130) among the plurality of outlets (130) may be provided so that water introduced into the flow path (110f) through the inlet (120) may flow out from the flow path (110f) through the outlet (130) to be sprayed toward the dishes accommodated in the basket (53) within the tub (12). The outlets (130) of the plurality of outlets (130) may be spaced apart from each other along the direction (F) in which water flows through the flow path (110f). Among the plurality of outlets (130), the outlet (130) that is surrounded at least in part by the rib (140) is adjacent to the inlet (120), so that the rib (140) can change the direction of a portion of the water flowing within the flow path (110f) to the outlet (130) adjacent to the inlet (120).

[0138] At least a portion of the above rib (140) may be provided downstream of the outlet (130) based on the direction (F) in which water flows through the above flow path (110f).

[0139] The above rib (140) may have an arc shape.

[0140] The above duct frame (110) may include a duct body (111) having an open upper portion; and a duct cover (112) coupled to the duct body and covering the open upper portion of the duct body. The rib (140) may extend upward from the bottom (111a) of the duct body (111).

[0141] The above outlet (130) can penetrate the bottom (111a) of the duct body (111). The bottom (111a) of the duct body (111) can be inclined downward toward the outlet (130).

[0142] The above duct (100) may have a shape in which the cross-sectional area of ​​the passage (110f) decreases along the direction (F) in which water flows through the passage (110f) so that the flow rate of water flowing out from the passage (110f) through the plurality of outlets (130) is uniform.

[0143] The above duct frame (110) may include a duct body (111) having an open upper portion; and a duct cover (112) that covers the open upper portion of the duct body and is formed integrally with the duct body (111).

[0144] The above duct may be a first duct (100). The dishwasher (1) may further include a sump (70) provided to receive water within the tub. The dishwasher (1) may further include a second duct (200) provided to receive water from the sump (70) and guide the supplied water to the first duct (100).

[0145] The above duct frame (110) may include a duct body (111) having an open upper portion; a duct cover (112) covering the open upper portion of the duct body; a hollow flange (113) including the inlet (120) and coupled to the second duct (200); and an inclined portion (114) extending from the flange (113) to the duct body (111) and including an upwardly inclined shape.

[0146] The inner diameter (I) of the above flange (113) may be greater than or equal to the distance (H) in the vertical direction (Z direction) between the inner surface of the duct body (111) and the inner surface of the duct cover (112).

[0147] One side (113a) of the flange (113) adjacent to the duct body may be positioned lower than the duct cover (112) so as not to interfere with the duct cover.

[0148] The first duct (100) can be detachably connected to the basket (53). The first duct (100) can be connected to the second duct (200) by being introduced into the tub (12) together with the basket (53). The first duct (100) can be detached from the second duct (200) by being withdrawn from the tub (12) together with the basket (53).

[0149] The above duct cover (112) can be inclined downward so as to cause water formed on the duct cover to fall from the duct cover.

[0150] The dishwasher (1) may further include a spray rotor (500) that receives water flowing out from the duct (110f) through the outlet and sprays the supplied water toward the dishes accommodated in the basket (53). The duct (100) may further include a first holder (150) that includes the outlet (130) and is provided to rotatably support the upper portion of the spray rotor; and a second holder (160) that is provided to rotatably support the lower portion of the spray rotor.

[0151] A dishwasher (1) according to one embodiment of the present disclosure may include: a tub (12); a sump (70) provided to receive water inside the tub; a first duct (200) provided to guide water supplied from the sump and having a shape extending along a first direction (D2); a second duct (100) provided to guide water supplied from the first duct (200) and having a shape extending along a second direction (D1) intersecting the first direction (D2); and a plurality of spray rotors (500) rotatably coupled to the second duct (100) and provided to spray water supplied from the second duct (100) into the inside of the tub (12). The second duct (100) may include: a duct body (111) provided to have an open upper portion; It may include a duct cover (112) that covers the open upper portion of the duct body and is coupled to the duct body to form a flow path (110f) together with the duct body; an inlet (120) configured to allow water to flow into the flow path from the first duct (200); and a plurality of outlets (130) spaced apart along the second direction (D1), each outlet corresponding to a respective injection rotor and configured to allow water to flow out from the flow path. The cross-sectional area of ​​the flow path (110f) of the second duct (100) may be provided to vary along the second direction (D1).

[0152] The first direction (D2) may be a vertical direction, and the second direction (D1) may be a forward-backward direction. The cross-sectional area of ​​the flow path (110f) of the second duct (100) may be arranged to decrease along the front.

[0153] The second duct (100) may include a rib (140). The rib (140) may be arranged in the flow path (110f) to surround at least a portion of an outlet (130a) adjacent to the inlet among the plurality of outlets (130). The rib (140) may reduce the speed of water flowing in the flow path (110f). The rib (140) may be arranged to change the direction of water flowing in the flow path (110f).

[0154] The above outlet (130) may be formed to penetrate the bottom (111a) of the duct body (111). The bottom (111a) of the duct body (111) may have a shape that slopes downward toward the outlet (130).

[0155] The dishwasher (1) may further include a basket (53) configured to store dishes and to which the second duct (100) is fixed. The second duct (100) may be configured to move in the second direction (D1) while being fixed to the basket, thereby docking to or undocking from the first duct (200).

[0156] According to various embodiments of the present disclosure, the first duct (100) may include a shape capable of reducing / preventing pressure loss and vortex generation of water. The cross-sectional area of ​​the flow path (110f) of the first duct (100) may decrease along the water flow direction (F). The first duct (100) may include a rib (140) for controlling the speed of the water. Accordingly, the flow rate of water flowing out through the plurality of outlets (130) may be maintained uniformly. In other words, the flow rate of water flowing into the plurality of spray rotors (500) may be maintained uniformly. The rotation of some of the plurality of spray rotors (500) may be prevented from stopping, and the flow rate of water sprayed from each of the plurality of spray rotors (500) may be uniform. As a result, the washing efficiency of the dishwasher (1) may be increased.

[0157] 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.

[0158] 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 basket provided to accommodate dishes inside the tub; and including ducts; The above duct, Duct frame forming the euro; An inlet provided within the above duct frame, wherein the inlet is provided so that water can flow into the duct through the inlet; An outlet provided within the duct frame, wherein water flowing into the duct through the inlet can flow out from the duct through the outlet to be sprayed toward the dishes accommodated in the basket within the tub; and A dishwasher comprising a rib surrounding at least a portion of the outlet within the duct frame, the rib being arranged to reduce the speed of water flowing within the channel and to divert at least a portion of the water flowing within the channel toward the outlet.

2. In paragraph 1, The above outlet is each outlet among a plurality of outlets provided within the duct frame, and each outlet among the plurality of outlets is provided so that water flowing into the path through the inlet can flow out from the path through the outlet to be sprayed toward the dishes accommodated in the basket within the tub. The outlets of the above plurality of outlets are spaced apart from each other along the direction in which water flows through the above-mentioned path, A dishwasher wherein the outlet of the plurality of outlets, wherein the rib surrounds at least a portion of the outlet, is adjacent to the inlet, such that the rib diverts a portion of the water flowing within the flow path to the outlet adjacent to the inlet.

3. In paragraph 1, A dishwasher wherein at least a portion of the ribs are provided downstream of the outlet based on the direction in which water flows through the euro.

4. In paragraph 1 The above rib is a dishwasher having an arc shape.

5. In paragraph 1, The above duct frame, a duct body having an open top; and A duct cover coupled to the duct body and covering the open upper portion of the duct body; The above rib is a dishwasher extending upward from the bottom of the duct body.

6. In paragraph 5, The above outlet penetrates the bottom of the duct body, The bottom of the above duct body is a dishwasher that slopes downward toward the outlet.

7. In paragraph 2, A dishwasher in which the duct has a shape in which the cross-sectional area of ​​the channel decreases along the direction in which water flows through the channel so that the flow rate of water flowing out of the channel through the plurality of outlets is uniform.

8. In paragraph 1, The above duct frame, a duct body having an open top; and A dishwasher comprising a duct cover that covers the open upper portion of the duct body and is formed integrally with the duct body.

9. In paragraph 1, The above duct is a first duct, A sump provided to receive water inside the above tub; and A dishwasher further comprising a second duct configured to receive water from the sump and guide the supplied water to the first duct.

10. In paragraph 9, The above duct frame, Duct body having an open top; A duct cover covering the open upper portion of the above duct body; A hollow flange including the above inlet and coupled to the second duct; and A dishwasher including an inclined portion extending from the flange to the duct body and having an upwardly sloping shape.

11. In paragraph 10, A dishwasher in which the inner diameter of the above flange is greater than or equal to the vertical distance between the inner surface of the above duct body and the inner surface of the above duct cover.

12. In paragraph 10, A dishwasher in which one side of the flange adjacent to the duct body is positioned lower than the duct cover so as not to interfere with the duct cover.

13. In paragraph 9, The above first duct, It is detachably connected to the above basket, It is connected to the second duct by being introduced into the tub together with the basket, A dishwasher separated from the second duct by being withdrawn from the tub together with the basket.

14. In paragraph 5, A dishwasher wherein the duct cover is inclined downward so as to cause water formed on the duct cover to fall from the duct cover.

15. In paragraph 1, Further comprising a spray rotor which receives water flowing out from the euro through the outlet and sprays the supplied water toward the dishes contained in the basket; The above duct, A first holder including the above outlet and arranged to rotatably support the upper portion of the injection rotor; and A dishwasher comprising a second holder configured to rotatably support the lower portion of the spray rotor.

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