Dishwashwer

Abstract

A dishwasher according to one embodiment comprises: a tub in which dishes are accommodated; a spray rotor that can rotate by spraying washing water onto the dishes; and a duct including a duct bearing for rotatably supporting the spray rotor and supplying the washing water from a duct body to the spray rotor, and a duct holder rotatably supporting the spray rotor together with the duct bearing, wherein the spray rotor includes: a nozzle body which is coupled to the duct bearing so as to receive the washing water from the duct bearing and which includes a protruding rib extending in the same direction as the direction in which the washing water is supplied; and a base body which is coupled to the nozzle body so as to accommodate the washing water introduced into the nozzle body, and which has a rib groove accommodating the protruding rib, so as to rotate together with the nozzle body.

Description

dishwasher

[0001] The present disclosure relates to a dishwasher including a spray rotor.

[0002] A dishwasher is a device that automatically washes food and other items 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 washing water onto the basket, and a duct for guiding the washing water to the spray unit.

[0004] The spray unit may include a bearing and a spray arm that rotates around the bearing. The spray arm may be provided with a propulsion nozzle that generates propulsion force while spraying the cleaning water. The propulsion nozzle must be located at a sufficient distance from the bearing to generate a moment. In other words, the spray arm may be formed to have a sufficient length.

[0005] Dishwashers can effectively wash small dishes by miniaturizing the spray unit. Friction with the bearings can be reduced to generate enough momentum to rotate the miniaturized spray unit.

[0006] One aspect of the present disclosure provides a dishwasher having an improved structure so as to improve washing performance.

[0007] One aspect of the present disclosure provides a dishwasher comprising a miniaturized spray unit.

[0008] One aspect of the present disclosure provides a dishwasher including a structure that prevents misassembly of a spray unit.

[0009] 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.

[0010] According to one embodiment, a dishwasher includes a tub for accommodating dishes, a spray rotor rotatable by spraying washing water onto the dishes, a duct including a duct bearing for supporting the spray rotor so as to be rotatable and supplying washing water from the duct body to the spray rotor, and a duct holder for supporting the spray rotor so as to be rotatable together with the duct bearing, wherein the spray rotor includes a nozzle body coupled to the duct bearing so as to receive washing water from the duct bearing, the nozzle body including a protruding rib extending in the same direction as the direction in which the washing water is supplied, and a base body coupled to the nozzle body so as to receive washing water introduced into the nozzle body, the base body having a rib groove formed therein for receiving the protruding rib so as to rotate together with the nozzle body.

[0011] According to one embodiment, a dishwasher includes a duct including a basket configured to receive dishes, a spray rotor configured to spray washing water onto the dishes, a duct body configured to allow the washing water to flow, a duct that includes a duct bearing configured to rotatably support the spray rotor and supply washing water from the duct body to the spray rotor, and a duct holder configured to rotatably support the spray rotor together with the duct bearing, wherein the spray rotor includes a nozzle body including a first protruding rib extending in the same direction as a direction in which the washing water is supplied and a second protruding rib extending in the same direction as the first protruding rib and formed in a different shape from the first protruding rib to prevent misassembly, a base body coupled to the nozzle body and having a first rib groove configured to accommodate the first protruding rib and a second rib groove configured to accommodate the second protruding rib, and a sealing body configured to cover a joint portion of the nozzle body and the base body.

[0012] FIG. 1 is a perspective view of a dishwasher according to one embodiment of the present disclosure.

[0013] FIG. 2 is a cross-sectional view of a dishwasher according to one embodiment of the present disclosure.

[0014] FIG. 3 is an exploded view illustrating a part of a dishwasher according to one embodiment of the present disclosure.

[0015] FIG. 4 is a perspective view illustrating a part of a dishwasher in which an upper basket is pulled out from a tub according to one embodiment of the present disclosure.

[0016] FIG. 5 is an enlarged view of a portion of a dishwasher according to an embodiment of the present disclosure.

[0017] FIG. 6 is a drawing illustrating a basket in which dishes are stored in a dishwasher according to one embodiment of the present disclosure.

[0018] FIG. 7 is a side cross-sectional view of a duct and injection rotor according to one embodiment of the present disclosure.

[0019] FIG. 8 is a perspective view of an injection rotor according to one embodiment of the present disclosure.

[0020] FIG. 9 is a perspective view of an injection rotor according to one embodiment of the present disclosure.

[0021] FIG. 10 is an exploded view of an injection rotor according to one embodiment of the present disclosure.

[0022] FIG. 11 is a cross-sectional view of an injection rotor according to one embodiment of the present disclosure.

[0023] FIG. 12 is a cross-sectional view of a duct and injection rotor according to one embodiment of the present disclosure.

[0024] Figure 13 is a drawing showing the action of washing water sprayed from the spray rotor by showing the spray rotor from the top.

[0025] FIG. 14 is a drawing illustrating a part of a configuration of an injection rotor according to one embodiment of the present disclosure.

[0026] FIG. 15 is a drawing illustrating a part of a configuration of an injection rotor according to one embodiment of the present disclosure.

[0027] FIG. 16 is a drawing illustrating the action of washing water sprayed from a spray rotor according to one embodiment of the present disclosure.

[0028] 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.

[0029] In connection with the description of the drawings, similar reference numerals may be used for similar or related components.

[0030] 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.

[0031] 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.

[0032] The term "and / or" includes any combination of a plurality of related described elements or any one of a plurality of related described elements.

[0033] 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).

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] Meanwhile, the terms "front-back direction", "front", "rear", "upper", "lower", etc. used in the following description are defined based on the drawing, and the shape and position of each component are not limited by these terms. For example, "upper-lower direction" means the Z direction based on the drawing, and "upper" and "lower" may mean upward (+Z direction) and downward (-Z direction) in the Z direction based on the drawing, respectively. "Forward-back direction" means the X direction based on the drawing, and "front" and "rear" may mean forward (+X direction) and backward (-X direction) in the X direction based on the drawing, respectively.

[0042] Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the attached drawings.

[0043] FIG. 1 is a perspective view of a dishwasher according to one embodiment of the present disclosure. FIG. 2 is a cross-sectional view of a dishwasher according to one embodiment of the present disclosure.

[0044] Referring to FIGS. 1 and 2, a dishwasher (1) according to one embodiment of the present disclosure may include a main body (10).

[0045] 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 have an opening (12a). As an example, the front of the tub (12) may be open.

[0046] 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).

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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 by an intermediate guide rack (not shown). For example, the intermediate guide rack (not shown) may be installed on a side (12c, see FIG. 3) of the tub so as to be slidable toward an opening (12a) of the tub.

[0051] 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 a lower guide rack (13a, see FIG. 4). For example, the lower guide rack (13a) may be installed on a side surface (12c) of the tub so as to be slidable toward an opening (12a) of the tub.

[0052] The lower basket (51) and the middle basket (52) can store relatively large dishes. However, the types of dishes stored in the lower basket (51) and the middle basket (52) are not limited to relatively large dishes. That is, the lower basket (51) and the middle basket (52) can store not only relatively large dishes but also relatively small dishes.

[0053] The storage container (50) may include an upper basket (53) positioned at the top in the height direction (Z direction) of the dishwasher (1). The upper basket (53) is formed in the form of a rack assembly so that relatively small-volume 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-sized dishes such as cups can be stored in the upper basket (53). However, this is merely an example, and the types of dishes stored in the upper basket (53) are not limited to the above examples.

[0054] 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 an upper guide rack (13c, see FIG. 4). 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.

[0055] The dishwasher (1) may include a washing room (10a), which is a space 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 in which dishes placed in a storage container (50) can be washed and dried using washing water.

[0056] The dishwasher (1) may include a sump assembly (70). The sump assembly (70) may be referred to as a sump (70). The sump assembly (70) may be provided to receive wash water. The sump assembly (70) may collect wash water from a wash room (10a). For smooth water collection in the sump assembly (70), the lower surface (12b) of the tub may be provided to be inclined downward toward the sump assembly (70). Wash water from the wash room (10a) may flow along the incline of the lower surface (12b) of the tub and smoothly flow into the sump assembly (70). In addition, the sump assembly (70) may be provided to provide the collected wash water to a spray device (40, see FIG. 3).

[0057] The dishwasher (1) may include a circulation pump (71) configured to pump washing water stored in a sump assembly (70). The circulation pump (71) may be provided as a component of the sump assembly (70). For example, the circulation pump (71) may be placed in the machine room (10b). Washing water pumped by the circulation pump (71) may flow to the spray device (40).

[0058] The dishwasher (1) may include a drain pump (72) for draining wash water and / or foreign substances (e.g., food waste, etc.) remaining in the sump assembly (70). The drain pump (72) may be provided as a component of the sump assembly (70). For example, the drain pump (72) may be placed in the machine room (10b).

[0059] The dishwasher (1) may include a machine room (10b), which is a space provided below the tub (12). The machine room (10b) may be a place where a structure for circulating wash water is arranged. The dishwasher (1) may include a base frame (16) forming the machine room (10b).

[0060] For example, at least a portion of the sump assembly (70) may be placed in the machine room (10b). Most of the sump assembly (70) may be placed in the machine room (10b). That is, the area of ​​the sump assembly (70) located in the washing room (10a) may be smaller than the area of ​​the sump assembly (70) located in the machine room (10b). By reducing the area of ​​the sump assembly (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.

[0061] The dishwasher (1) may include a filter assembly (60). The filter assembly (60) may be provided to filter foreign substances contained in wash water flowing into the sump assembly (70). Wash water filtered through the filter assembly (60) may be pumped by a circulation pump (71) and provided to the spray device (40). The filter assembly (60) may be detachably mounted to the sump assembly (70). For example, the filter assembly (60) may include at least one of a fine filter, a coarse filter, or a micro filter.

[0062] FIG. 3 is an exploded view illustrating a part of a dishwasher according to one embodiment of the present disclosure.

[0063] Referring to FIG. 3, a dishwasher (1) according to one embodiment of the present disclosure may include a spray device (40).

[0064] The dishwasher (1) may include a spray device (40) configured to spray washing water. The spray device (40) may spray washing water into a washing chamber (10a). The spray device (40) may spray washing water toward dishes stored in a storage container (50). The spray device (40) may receive washing water from a sump assembly (70) to be described later.

[0065] The injection device (40) may include at least one injection unit. The injection device (40) may include a plurality of injection units (41, 42, 43).

[0066] 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 (Z direction) of the dishwasher (1). The spray device (40) may include a second spray unit (42) disposed at the bottom of the middle basket (52) in the height direction (Z direction) of the dishwasher (1). The spray device (40) may include a third spray unit (43) disposed at the top of the upper basket (53) in the height direction (Z direction) of the dishwasher (1). However, the number of spray units is not limited to the above example. The spray device (40) may include two or fewer spray units. The spray device (40) may include four or more spray units.

[0067] The spray unit (41, 42, 43) may include a spray arm (421). The operation of the spray arm (421) will be briefly described using the second spray unit (42) as an example. The description of the second spray unit (42) may be applied to the first spray unit (41) and / or the third spray unit (43).

[0068] The second spray unit (42) may include a spray arm (421). The spray arm (421) may be provided to be rotatable relative to the tub (12). The spray arm (421) may spray the washing water while rotating relative to the tub (12).

[0069] The spray arm (421) may have a shape extending in one direction. The spray arm (421) may extend in a direction perpendicular to the rotation axis. Alternatively, the spray arm (421) may extend along the diameter direction of a circle drawn according to the rotation of the spray arm (421).

[0070] The spray arm (421) may form a path through which the washing water flows. The second spray unit (42) may include a spray hole (422) for spraying the washing water. The spray hole (422) may be formed in the spray arm (421). For example, the spray holes (422) may be provided in multiple numbers. For example, the multiple spray holes (422) may be arranged to be spaced apart from each other along the extension direction of the spray arm (421).

[0071] However, the spray device (40) may spray the washing water in a different manner from the above-described example. For example, the first spray unit (41) may be fixed to one side of the lower surface (12b) of the tub. At this time, the first spray unit (41) is provided to spray the washing water in a substantially horizontal direction by means of a fixed nozzle, and the washing 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) disposed inside the washing chamber (C) 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, the second spray unit (42) and the third spray unit (43) may also be provided to spray the washing water by means of a fixed nozzle, similar to the above-described example.

[0072] The dishwasher (1) may include an auxiliary spray device (30). The auxiliary spray device (30) may be positioned at a lower side of the washing chamber (C) and may spray washing water onto a portion of the washing chamber (C). The auxiliary spray device (30) is designed to spray water at a relatively high pressure compared to the spray device (40), thereby enabling intensive washing of heavily soiled dishes. The auxiliary spray device (30) may be configured to spray washing water while rotating. The auxiliary spray device (30) may be referred to as an auxiliary spray unit (30).

[0073] The auxiliary injection device (30) may be provided as a component of the injection device (40). Hereinafter, the plurality of injection units may be a concept including at least two of the first injection unit (41), the second injection unit (42), the third injection unit (43), or the auxiliary injection unit (30).

[0074] The dishwasher (1) may optionally be equipped with an auxiliary spray device (30). That is, the auxiliary spray device (30) may be omitted from the dishwasher (1).

[0075] The sump assembly (70) may be arranged to supply wash water to at least one of the plurality of spray units (41, 42, 43, 30). The sump assembly (70) may be arranged to selectively supply wash water to the plurality of spray units (41, 42, 43, 30).

[0076] A spray device (40) according to one embodiment of the present disclosure may include a spray rotor (200). The spray rotor (200) may rotate while spraying washing water. That is, the spray rotor (200) may be rotated by spraying washing water. The spray rotor (200) may be rotatably coupled to a duct (100) to be described later.

[0077] The dishwasher (1) may include an inlet duct (14) provided to allow washing water to flow in from the sump assembly (70). In addition, the dishwasher (1) may include a duct (100) for guiding the washing water flowing in through the inlet duct (14) to the spray rotor (200).

[0078] The inlet duct (14) and the duct (100) may be arranged inside the tub (12). The inlet duct (14) may be provided between the sump assembly (70) and the duct (100). For example, the duct (100) may be provided between the inlet duct (14) and the spray device (40). For example, the inlet duct (14) and the duct (100) may be provided as a duct assembly. The duct assembly may be arranged in the washing room (10a).

[0079] The inlet duct (14) may be provided in multiple numbers. For example, one of the multiple inlet ducts (14) may be provided to guide the washing water to the multiple spray units (41, 42, 43), and another of the multiple inlet ducts (14) may be provided to guide the washing water to the spray rotor (200).

[0080] However, the present invention is not limited to the above-described example, and the inlet duct (14) and the duct (100) may be provided as an integral structure. In this case, the integral duct may directly guide the washing water flowing in from the sump assembly (70) to the spray device (40).

[0081] FIG. 4 is a perspective view illustrating a portion of a dishwasher according to one embodiment of the present disclosure, wherein the upper basket is extended from the tub. FIG. 5 is an enlarged view of a portion of a dishwasher according to one embodiment of the present disclosure. FIG. 6 is a drawing illustrating a basket containing dishes in a dishwasher according to one embodiment of the present disclosure.

[0082] Referring to FIGS. 4 to 6, a dishwasher (1) according to one embodiment may include a duct (100) provided to supply washing water to a spray rotor (200).

[0083] The duct (100) can extend along one direction. The duct (100) can be arranged to extend along the front-back direction (X direction).

[0084] The duct (100) may be placed in the storage container (50). The duct (100) may be mounted on the upper side of the storage container (50). The duct (100) may be provided to supply washing water for washing dishes stored in the storage container (50).

[0085] The storage container (50) in which the duct (100) is mounted may be an upper basket (53). Hereinafter, the storage container (50) in which the duct (100) is mounted will be described using the upper basket (53) as an example. The description of the upper basket (53) may be applied to the middle basket (52) and / or the lower basket (51).

[0086] The upper basket (53) may include a bottom portion (531) designed to support dishes. The bottom portion (531) may form the base of the upper basket (53). For example, the bottom portion (531) may be formed by wires (53a, 53b) described below. The bottom portion (531) may be referred to as a bottom frame.

[0087] The first wire (53a) and the second wire (53b) may be arranged orthogonally to each other. For example, as illustrated, the first wire (53a) may extend along the left-right direction (Y direction), and the second wire (53b) may extend along the front-back direction (X direction). The first wire (53a) and the second wire (53b) may be spaced apart from each other and may intersect.

[0088] The wires (53a, 53b) may be provided in multiple numbers, and the multiple wires (53a, 53b) may be formed into an integral upper basket (53) through welding, deep drawing, or other operations. That is, multiple openings (not shown) may be formed between the first wire (53a) and the second wire (53b).

[0089] The upper basket (53) may include a side portion (532). The side portion (532) may be configured to surround the bottom portion (531). The side portion (532) may have a shape extending upward from the edge of the bottom portion (531). For example, the side portion (532) may be formed in a frame shape by wires (53a, 53b) to be described later. The side portion (532) may be referred to as a side frame.

[0090] The bottom portion (531) may include a horizontal support portion (5311) extending horizontally. The horizontal support portion (5311) may form at least a portion of the bottom portion (531). The horizontal support portion (5311) may support the dish horizontally.

[0091] The bottom portion (531) may include inclined support portions (5312a, 5312b) that are provided to support tableware at an angle. The inclined support portions (5312a, 5312b) may extend from the horizontal support portion (5311). The inclined support portions (5312a, 5312b) may be formed to be inclined downward. That is, the tableware supported on the inclined support portions (5312a, 5312b) may be placed with one open side facing downward.

[0092] The inclined support (5312a, 5312b) may include a first inclined support (5312a) and a second inclined support (5312b) that are provided to have different inclinations and / or lengths.

[0093] The first inclined support (5312a) and the second inclined support (5312b) may be provided to have different inclinations. As illustrated, the first inclined support (5312a) may have a smaller inclination than the second inclined support (5312b). That is, the first inclined support (5312a) may have a longer length than the second inclined support (5312b). Accordingly, dishes with a taller height can be placed on the first inclined support (5312a), and dishes with a shorter height can be placed on the second inclined support (5312b).

[0094] The first inclined support (5312a) and the second inclined support (5312b) can support tableware having a certain height. For example, the first inclined support (5312a) and the second inclined support (5312b) can support cups, etc. However, the tableware that can be placed on the first inclined support (5312a) and the second inclined support (5312b) is not limited thereto, and any other type of tableware may be placed thereon.

[0095] The bottom portion (531) may include a duct support portion (5313) connected to the inclined support portion (5312a, 5312b). The duct support portion (5313) may be provided so that the duct body (110) is secured thereto.

[0096] The duct support (5313) can be arranged along one direction to support the duct body (110) extending in one direction. For example, the duct support (5313) can be arranged along the front-back direction (X direction).

[0097] The duct supports (5313) may be arranged at a predetermined interval. The bottom portion (531) may include a rotor opening (533a) provided between the duct supports (5313) to allow the spray rotor (200) to pass therethrough. That is, the duct (100) may be positioned above the duct supports (5313), and the spray rotor (200) may be positioned below the duct supports (5313).

[0098] A space may be formed between the first inclined support (5312a) and the second inclined support (5312b) on the lower side of the duct support (5313). The injection rotor (200) may be positioned between the first inclined support (5312a) and the second inclined support (5312b).

[0099] The open side of the dishes supported on the inclined support member (5312a, 5312b) can be supported toward the spray rotor (200). The spray rotor (200) can spray washing water into the inside of the dishes through the open side of the dishes.

[0100] The duct (100) may be positioned above the bottom portion (531). That is, the duct (100) may be positioned above the horizontal support portion (5311), the inclined support portions (5312a, 5312b), and the duct support portion (5313) that constitute the bottom portion (531). In other words, the duct support portion (5313) on which the duct (100) is secured may be positioned above the horizontal bottom portion (5311). The duct support portion (5313) may be positioned at at least the same height as the horizontal bottom portion (5311).

[0101] Since the duct (100) is positioned above the bottom portion (531), the spray rotor (200) can be positioned between the inclined support portions (5312a, 5312b). That is, since the spray rotor (200) can be positioned to face the open side of the dish, the inside of the dish can be washed evenly.

[0102] In addition, the spray rotor (200) can drain the residual water inside the duct (100). Since the duct (100) is extended relatively long in one direction, the washing water inside the duct (100) may not flow and may remain. In particular, after the operation of the dishwasher (1) is finished, if the washing water is not supplied, the washing water does not flow, so residual water may be generated inside the duct (100). Since the spray rotor (200) is arranged below the duct (100), the residual water inside the duct (100) can be drained to the spray rotor (200).

[0103] In addition, since the duct (100) is positioned above the bottom portion (531), the size of the injection rotor (200) positioned below the duct (100) can be increased. As the size of the injection rotor (200) increases, the rotational force generated from the propulsion injection port (200a) described later increases, allowing the rotation of the injection rotor (200) to occur more smoothly. In addition, the rotation of the injection rotor (200) can be prevented from stopping.

[0104] In addition, since the duct (100) is positioned higher than the bottom portion (531), dishes supported by the inclined support portions (5312a, 5312b) can also be supported by the duct (100). Specifically, the dishes can be supported by the inclined support portions (5312a, 5312b) and the duct body (110).

[0105] In addition, since the duct (100) is positioned above the bottom portion (531), the vertical length of the spray rotor (200) can be secured. Specifically, the length of the nozzle portion (211, see FIG. 11) of the spray rotor (200) to be described later can be secured. By securing the length of the nozzle portion (211), the interior of the nozzle portion (211) can be provided with a venturi tube structure in which the diameter gradually increases. In other words, the flow rate of the washing water flowing into the nozzle portion (211) can be secured.

[0106] The duct (100) may be provided to supply washing water to the spray rotor (200). The spray rotor (200) may be positioned at the lower side of the duct (100). Washing water flowing inside the duct (100) may flow to the spray rotor (200) by gravity.

[0107] The spray rotor (200) may be positioned at the lower side of the duct (100). The spray rotor (200) may be rotatably coupled to the duct (100). The spray rotor (200) may obtain rotational force from the force of spraying the washing water. The spray rotor (200) may rotate at the lower side of the duct (100) and spray the washing water.

[0108] The spray rotor (200) can spray washing water in various directions while rotating. The spray rotor (200) can spray washing water toward dishes placed around it.

[0109] FIG. 7 is a cross-sectional side view of a duct and a spray rotor according to one embodiment of the present disclosure. FIG. 8 is a perspective view of a spray rotor according to one embodiment of the present disclosure. FIG. 9 is a perspective view of a spray rotor according to one embodiment of the present disclosure.

[0110] Referring to FIGS. 7 to 9, a dishwasher (1) according to one embodiment of the present disclosure includes a spray rotor (200).

[0111] The duct (100) may include a duct body (110) forming a duct path (110f) through which washing water flows. The duct body (110) may be arranged to extend along one direction in which the duct (100) extends. For example, the duct body (110) may be arranged to extend along the front-rear direction (X direction).

[0112] A plurality of injection rotors (200) may be provided. A plurality of injection rotors (200) may be arranged at a predetermined interval along the direction in which the duct (100) extends.

[0113] The duct (100) may include a plurality of duct holders (130) arranged to rotatably support a plurality of spray rotors (200). That is, the plurality of duct holders (130) and the plurality of spray rotors (200) may be coupled so that each spray rotor (200) can rotate.

[0114] In this example, one injection rotor (200) and one duct holder (130) are described, but this description can be applied to multiple injection rotors (200) and multiple duct holders (130).

[0115] The duct body (110) may include a connection portion (111) configured to receive washing water from an inlet duct (14). The connection portion (111) may be connected to an inlet duct (14) that receives washing water from a sump assembly (70, see FIG. 2). However, the present invention is not limited thereto, and for example, the connection portion (111) may be directly connected to the sump assembly (70).

[0116] The duct body (110) may include a support guide (112) that is provided to be supported by a duct support member (5313). The support guide (112) may guide the duct (100) so that the duct (100) is seated on the duct support member (5313).

[0117] The support guide (112) may be supported by a duct support member (5313). The support guide (112) may be located at the front of the duct body (110) and may be supported by the duct support member (5313) located at the frontmost position among the duct supports (5313).

[0118] The injection rotor (200) can be coupled to the lower side of the duct (100). With the injection rotor (200) coupled to the lower side of the duct (100), the duct (100) can be seated on the duct support (5313). That is, the injection rotor (200) can pass through the rotor opening (533a, see FIG. 5) and be positioned lower than the duct support (5313).

[0119] The injection rotor (200) can be rotatably coupled to the duct (100).

[0120] The duct (100) may include a duct bearing (120) for supplying washing water from the duct body (110) to the spray rotor (200). The duct bearing (120) may be rotatably coupled to the spray rotor (200).

[0121] The duct bearing (120) may protrude downward from the duct body (110). The duct bearing (120) may be provided so that the washing water flowing through the duct flow path (110f) inside the duct body (110) is supplied to the spray rotor (200).

[0122] The duct (100) may include a duct holder (130) arranged to rotatably support the injection rotor (200) together with a duct bearing (120).

[0123] The duct holder (130) may include a support bearing (133) positioned to face the duct bearing (120). The support bearing (133) may be positioned at a predetermined distance from the duct bearing (120). The injection rotor (200) may be coupled between the duct bearing (120) and the support bearing (133).

[0124] The duct holder (130) may include an extension (131) extending along the direction in which the duct bearing (120) protrudes from the duct body (110). The extension (131) may form a gap for the injection rotor (200) to be coupled between the duct bearing (120) and the support bearing (133).

[0125] The duct (100) may be formed integrally. Specifically, the duct body (110), the duct bearing (120), and the duct holder (130) may be formed integrally. Since the duct body (110) and the duct holder (130) are formed integrally, the gap between the duct bearing (120) and the duct holder (130) can be manufactured to be constant. Accordingly, the tolerance of the injection rotor (200) coupled between the duct bearing (120) and the duct holder (130) can be minimized.

[0126] In addition, the duct holder (130) may include an elastically deformable material. The spray rotor (200) may have a height corresponding to the gap between the duct bearing (120) and the duct holder (130). That is, when the spray rotor (200) is coupled between the duct bearing (120) and the duct holder (130), the duct holder (130) may need to be elastically deformed. In order for the spray rotor (200) to be coupled, a part of the duct holder (130) may need to be elastically deformed, thereby increasing the gap between the duct bearing (120) and the duct holder (130). Therefore, the duct holder (130) may be designed to be elastically deformable.

[0127] The duct holder (130) may include a holder portion (132) that is bent from an extension portion (131). The holder portion (132) may extend in approximately the same direction as the extension direction of the duct body (110). That is, the extension portion (131) and the holder portion (132) may be formed to be approximately orthogonal. However, the shape of the duct holder (130) is not limited thereto, and may be provided in any shape as long as the support bearing (133) is arranged to face the duct bearing (120).

[0128] The support bearing (133) may be located at the end of the holder portion (132). In other words, the support bearing (133) may be formed at a position opposite to the position at which the holder portion (132) is bent from the extension portion (131).

[0129] The support bearing (133) may include a support end (133a) whose cross-sectional area decreases toward the spray rotor (200) in order to reduce frictional force generated while supporting the spray rotor (200).

[0130] The support end (133a) may have a roughly pointed shape. However, it may be formed to have surface contact so that the injection rotor (200) has a certain level of stability for rotation.

[0131] The spray rotor (200) may be rotatable. The spray rotor (200) may be rotatable while being coupled between the duct bearing (120) and the support bearing (133). The spray rotor (200) may be rotated by spraying the washing water.

[0132] The spray rotor (200) may include a nozzle body (210) provided to receive washing water. The nozzle body (210) may be rotatably coupled to a duct bearing (120).

[0133] The spray rotor (200) may include a base body (220) that is provided to be coupled with the nozzle body (210) so that the washing water introduced into the nozzle body (210) is received. The base body (220) may form a space therein together with the nozzle body (210) in which the washing water is received.

[0134] The base body (220) can be rotatably supported by a duct holder (130).

[0135] The spray rotor (200) may include a propulsion nozzle (200a) formed on the outer surface of the spray rotor (200). The propulsion nozzle (200a) may generate rotational force of the spray rotor (200) by spraying cleaning water. The propulsion nozzle (200a) may be inclined to form a predetermined angle with respect to a tangent line of the spray rotor (200). That is, the direction of the force component by the cleaning water sprayed from the propulsion nozzle (200a) may form a predetermined angle with respect to the radial direction of the spray rotor (200).

[0136] Since the propulsion nozzle (200a) is formed on the outer surface of the injection rotor (200), it can be spaced apart from the center of the injection rotor (200) by approximately the radius of the injection rotor (200). That is, the magnitude of the moment generated by the tangential force of the injection rotor (200) among the force components caused by the cleaning water sprayed from the propulsion nozzle (200a) can be maximized.

[0137] The spray rotor (200) may include an upper spray port (210a) that is arranged to spray the washing water in a direction different from the direction in which the propellant spray port (200a) sprays.

[0138] The upper injection port (210a) may be formed in the nozzle body (210). The upper injection port (210a) may be formed by an upper injection port forming part (212). The upper injection port (210a) may spray the washing water upwards in the radial direction of the injection rotor (200).

[0139] The upper injection port (210a) may be formed along the radial direction of the injection rotor (200). However, the present invention is not limited thereto, and the upper injection port (210a) may be formed to form a predetermined angle with the radial direction of the injection rotor (200), similar to the propulsion injection port (200a). That is, the upper injection port (210a) may also spray cleaning water to generate rotational force of the injection rotor (200).

[0140] In this way, by providing different spray directions for the upper nozzle (210a) and the propulsion nozzle (200a), the efficiency of washing dishes can be improved.

[0141] In this city, the number of propellant nozzles (200a) and upper nozzles (210a) is illustrated as one each, but this is not limited thereto. The position, size, and / or number of the propellant nozzles (200a) and upper nozzles (210a) are not limited thereto, and may have various shapes and / or structures.

[0142] Fig. 10 is an exploded view of a spray rotor according to one embodiment of the present disclosure. Fig. 11 is a cross-sectional view of a spray rotor according to one embodiment of the present disclosure. Fig. 12 is a cross-sectional view of a duct and a spray rotor according to one embodiment of the present disclosure. Fig. 13 is a drawing illustrating the action of washing water sprayed from the spray rotor, showing the spray rotor from above.

[0143] Referring to FIGS. 10 to 12, an injection rotor (200) according to one embodiment of the present disclosure may include a nozzle body (210), a base body (220), and a sealing body (230). The injection rotor (200) may be formed by combining the nozzle body (210), the base body (220), and the sealing body (230).

[0144] The nozzle body (210) may include a nozzle body coupling portion (2101). The nozzle body coupling portion (2101) may be formed along the circumferential direction of the nozzle body (210). The nozzle body coupling portion (2101) may be formed on a portion of the outer surface of the nozzle body (210). The nozzle body coupling portion (2101) may have a shape that protrudes from the outer surface of the nozzle body (210).

[0145] The base body (220) may include a base body connecting portion (2201). The base body connecting portion (2201) may be formed along the circumference of the base body (220). The base body connecting portion (2201) may be formed on a portion of the outer surface of the base body (220). The base body connecting portion (2201) may have a shape that protrudes from the outer surface of the base body (220).

[0146] The nozzle body coupling portion (2101) and the base body coupling portion (2202) can be positioned to correspond to each other. The nozzle body coupling portion (2101) and the base body coupling portion (2202) can be inserted into the coupling groove (231) of the sealing body (230) while being coupled.

[0147] The coupling groove (231) can accommodate the nozzle body coupling portion (2101) and the base body coupling portion (2202). That is, the sealing body (230) can cover the gap between the nozzle body coupling portion (2101) and the base body coupling portion (2202). Accordingly, it is possible to prevent the washing water from leaking between the nozzle body coupling portion (2101) and the base body coupling portion (2202).

[0148] The nozzle body (210) and the base body (220) can together form a propulsion nozzle (200a). The nozzle body (210) can include a first nozzle forming portion (213). The base body (220) can include a second nozzle forming portion (223). That is, the first nozzle forming portion (213) and the second nozzle forming portion (223) can form a propulsion nozzle (200a).

[0149] The propulsion nozzle (200a) may not be covered by the sealing body (230). The sealing body (230) may be cut in a portion corresponding to the first nozzle forming portion (213) and the second nozzle forming portion (223).

[0150] A base body (220) according to one embodiment of the present disclosure may include a drainage portion (224) formed to prevent residual water.

[0151] Washing water may remain inside the spray rotor (200). Alternatively, food particles stuck on dishes may enter the interior of the spray rotor (200) through the propellant nozzle (200a) or the upper nozzle (210a). This may contaminate the interior of the spray rotor (200) or result in dishes being washed with contaminated washing water. Therefore, it is necessary to discharge the washing water or food particles inside the spray rotor (200).

[0152] The drainage part (224) may be formed by being sunken into the inside of the base body (220). The drainage part (224) may be formed to be inclined downward toward the propulsion nozzle (200a). Washing water or food waste remaining in the drainage part (224) may be drained through the propulsion nozzle (200a).

[0153] In addition, residual water inside the duct (100) can be drained. Since the duct (100) is extended relatively long in one direction, the washing water inside the duct (100) may not flow and may remain. In particular, after the operation of the dishwasher (1) is finished, if washing water is not supplied, the washing water does not flow, and thus residual water may form inside the duct (100).

[0154] Since the injection rotor (200) is located at the lower side of the duct (100), residual water inside the duct (100) can flow into the injection rotor (200) through the duct bearing (120). The residual water that has flowed into the injection rotor (200) can be discharged to the propulsion injection port (200a) through the drain (224).

[0155] A base body (220) according to one embodiment of the present disclosure may include a guide portion (214). The guide portion (214) may guide the washing water to flow to the upper nozzle (210a). Since the upper nozzle (210a) is positioned above the propulsion nozzle (200a), the washing water may have a greater tendency to flow to the propulsion nozzle (200a) than to the upper nozzle (210a). The guide portion (214) may also allow the washing water to flow to the upper nozzle (210a), thereby allowing the washing water to flow evenly to the upper nozzle (210a) and the propulsion nozzle (200a).

[0156] Although the injection rotor (200) according to one embodiment of the present disclosure has been described as having a nozzle body (210) and a base body (220) that are separate, this is not limited thereto. The nozzle body (210) and the base body (220) may be formed integrally. In addition, the nozzle body (210), the base body (220), and / or the sealing body (230) may be formed integrally. In addition, when the nozzle body (210) and the base body (220) are formed integrally, a separate sealing body (230) may be unnecessary.

[0157] The injection rotor (200) may include cutting surfaces (240a, 240b) formed by cutting a portion of the outer surface of the nozzle body (210) and the base body (220). The nozzle body (210) may include a nozzle cutting surface (240a) formed on the outer surface of the nozzle body (210). The base body (220) may include a base cutting surface (240b) formed on the outer surface of the base body (220).

[0158] The sealing body (230) may be formed by a double molding method. That is, after the nozzle body (210) and the base body (220) are combined and placed in an injection molding machine, the sealing body (230) may be provided to cover the outer peripheral surfaces of the nozzle body (210) and the base body (220). At this time, molding defects may occur in the sealing body (230).

[0159] By forming the cutting surface (240), molding defects can be prevented when the sealing body (230) is injected by double molding.

[0160] The cutting surface (240) can be provided in multiple numbers.

[0161] The injection rotor (200) may include a hook (250). In this illustration, the hook (250) is shown as being formed on the base body (220), but is not limited thereto, and the hook (250) may be formed on the nozzle body (210). Below, the hook (250) is described as being formed on the base body (220) as an example.

[0162] A hook (250) may be formed on a part of the outer surface of the base body (220). A catch portion (251) may be formed on the nozzle body (210) for the hook (250) to catch. The catch portion (251) may be formed on a part of the outer surface of the nozzle body (210). The hook (250) formed on the base body (220) can stably connect the base body (220) and the nozzle body (210) by catching on the catch portion (251) formed on the nozzle body (210).

[0163] The hook (250) can connect the base body (220) and the nozzle body (210) to prevent the base body (220) and the nozzle body (210) from separating before molding the sealing body (230).

[0164] The hook (250) may be formed on the cutting surface (240). Because the hook (250) is formed on the cutting surface, the thickness of the sealing body (230) may not be reduced. In addition, the durability of the sealing body (230) may be prevented from weakening.

[0165] The hook (250) may be provided in multiples. There may be two hooks (250). The two hooks may be arranged to face each other.

[0166] The injection rotor (200) may include a protruding rib (260). The injection rotor (200) may include a rib groove (270) that accommodates the protruding rib (260). A description thereof will be provided later.

[0167] The spray rotor (200) can rotate by spraying the washing water flowing through the duct path (110f) formed inside the duct (100). The duct (100) can be arranged so that the washing water moves through a duct bearing (120) protruding from the duct body (110).

[0168] The nozzle portion (211) of the nozzle body (210) can be rotatably coupled with the duct bearing (120). The nozzle portion (211) can be coupled to the outside of the duct bearing (120). Specifically, the nozzle portion (211) can be coupled to surround the duct bearing (120). The nozzle portion (211) can be coupled to the duct bearing (120) at a slight distance therefrom so that the spray rotor (200) can rotate smoothly.

[0169] The nozzle unit (211) may have a flow path cross-sectional area corresponding to the flow path cross-sectional area of ​​the duct bearing (120) so as to form a distribution flow path (P) together with the duct bearing (120).

[0170] The duct bearing (120) can form a flow path (120f) for supplying washing water to the spray rotor (200). The nozzle unit (211) can form a flow path (211f) that is in communication with the flow path (120f) of the duct bearing (120). That is, the flow path (120f) of the duct bearing (120) and the flow path (211f) of the nozzle unit (211) may have diameters of corresponding sizes at the connecting portions. Accordingly, the washing water passing through the boundary between the flow path (120f) of the duct bearing (120) and the flow path (211f) of the nozzle unit (211) may have little change in flow velocity.

[0171] The duct body (110) may include a curved portion (114) provided to prevent a decrease in flow rate when the washing water flowing in the duct path (110f) formed inside the duct body (110) flows to the duct bearing (120).

[0172] The curved portion (114) has a curved shape so as not to obstruct the flow of washing water, thereby preventing a decrease in the flow rate of washing water. When washing water flowing through the duct path (110f) inside the duct body (110) flows to the duct bearing (120), a flow rate above a certain level can be secured.

[0173] The bearing flow path (120f) of the duct bearing (120) may have a constant cross-sectional area. That is, the washing water flowing inside the duct bearing (120) may not have a large change in flow rate. On the other hand, the cross-sectional area of ​​the nozzle flow path (211f) of the nozzle part (211) may gradually increase as the washing water flows. That is, the cross-sectional area of ​​the nozzle flow path (211f) of the nozzle part (211) may increase as it moves toward the base body (220).

[0174] Accordingly, the washing water flowing through the distribution path (P) may have a slower flow rate as it passes through the bearing path (120f) of the duct bearing (120) and the nozzle path (211f) inside the nozzle unit (211). As the cross-sectional area of ​​the path increases, the flow rate decreases, and thus, the flow rate may become slower as it approaches the base body (220). For example, the flow rate (v1) of the bearing path (120f) of the duct bearing (120) may be greater than the flow rate (v2) on the downstream side of the nozzle unit (211f).

[0175] In this way, the flow velocity at the joint portion of the duct bearing (120) and the nozzle portion (211) can be sufficiently large. Accordingly, leakage through the gap between the joint portion of the duct bearing (120) and the nozzle portion (2111) can be minimized.

[0176] However, some of the washing water may seep between the joint portion (2111) of the duct bearing (120) and the nozzle portion (211). Even if some of the washing water seeps between the joint portion (2111) of the duct bearing (120) and the nozzle portion (211), the frictional force between the duct bearing (120) and the nozzle portion (211) can be reduced. Therefore, it can be helpful for the rotation of the spray rotor (200).

[0177] The nozzle part (211) may include a sealing part (2111a, 2111b) that is provided to surround the duct bearing (120) to prevent the washing water from flowing out between the nozzle part and the duct bearing (120).

[0178] The sealing portions (2111a, 2111b) may have a size corresponding to the outer diameter of the duct bearing (120) so as to accommodate the duct bearing (120). When the duct bearing (120) is accommodated in the sealing portions (2111a, 2111b), the washing water passing through the distribution path (P) may have to pass through the first sealing portion (2111a) and the second sealing portion (2111b) in sequence. In other words, a labyrinth seal structure that prevents the washing water from flowing out may be formed.

[0179] The sealing portions (2111a, 2111b) of the present disclosure are merely examples, and the sealing portions (2111a, 2111b) may be provided so that the washing water goes through more sealing steps.

[0180] The base body (220) may include a recessed portion (221) that is sunken so that the support bearing (133) comes into contact with it. The recessed portion (221) of the base body (220) may be rotatably supported by the support bearing (133) of the duct holder (130). Specifically, the base body (220) may come into contact with the support end (133a) of the support bearing (133).

[0181] The nozzle body (210) may include an upper injection port forming portion (212) provided to form an upper injection port (210a). The upper injection port (210a) may spray the washing water upward along the radial direction of the injection rotor (200). However, the present invention is not limited thereto, and the upper injection port (210a) may be provided to have various shapes, sizes, and / or positions.

[0182] By providing different spray directions for the upper nozzle (210a) and the propulsion nozzle (200a), the efficiency of dishwashing can be improved. Furthermore, in addition to the upper nozzle (210a), an additional nozzle formed on the lower side of the base body (210) can be provided. In this case, the spray rotor (200) can spray washing water in a wider variety of directions.

[0183] In addition, the upper nozzle (210a) is illustrated as spraying the washing water in the same direction as the radial direction of the spray rotor (200), but is not limited thereto. The upper nozzle (210a) may also be positioned to form a predetermined angle with the radial direction of the spray rotor (200), thereby generating a rotational force.

[0184] The spray rotor (200) can spray cleaning water through a propulsion nozzle (200a) and / or an upper nozzle (210a). The spray rotor (200) can include a guide protrusion (222) to guide the cleaning water introduced through the distribution path (P) toward the propulsion nozzle (200a) and / or the upper nozzle (210a).

[0185] The guide protrusion (222) may be formed at a position corresponding to the rotation axis of the spray rotor (200). Therefore, the washing water introduced through the distribution path (P) can be uniformly distributed in a radial direction in the spray rotor (200) by the guide protrusion (222). That is, since the washing water flows uniformly inside the spray rotor (200), the spray rotor (200) can rotate stably. In other words, since the washing water inside the spray rotor (200) does not move unbalanced, the spray rotor (200) can be prevented from rotating unstably.

[0186] The spray rotor (200) can rotate in a direction opposite to the spraying direction of the washing water. Specifically, the washing water sprayed from the propulsion spray port (200a) can be sprayed along the direction in which the propulsion spray port (200a) is formed. That is, the washing water sprayed from the propulsion spray port (200a) can form a predetermined angle with respect to the radius (r1) direction of the spray rotor (200).

[0187] The washing water sprayed from the propulsion nozzle (200a) can generate a propulsive force in the opposite direction of Fr, which is a normal direction component in the direction of the radius (r1) of the spray rotor (200). At this time, since the distance from the rotational axis of the spray rotor (200) to Fr is equal to the radius (r1) of the spray rotor (200), the moment caused by the washing water sprayed from the propulsion nozzle (200a) can be equal to the size of Fr multiplied by the radius (r1) of the spray rotor (200).

[0188] The spray rotor (200) according to one embodiment of the present disclosure may have a smaller radius than the spray arm (421). Accordingly, the rotational force generated in the spray rotor (200) may be smaller.

[0189] However, by means of the coupling structure between the duct (100) and the injection rotor (200) according to one embodiment of the present disclosure, the injection rotor (200) can rotate smoothly by reducing the frictional force and the moment resulting therefrom acting on the injection rotor (200).

[0190] The injection rotor (200) can be rotatably supported by a duct bearing (120) and a support bearing (133).

[0191] The injection rotor (200) can rotate while in contact with the support bearing (133). The support bearing (133) can support the base body (220). Specifically, the support bearing (133) can support the recessed portion (221) of the base body (220).

[0192] The support bearing (133) may include a support end portion (133a) having a shape in which the cross-sectional area decreases as it moves toward the recessed portion (221) of the base body (220). In the rotation of the injection rotor (200), the support bearing (133) may be advantageous when the contact area with the recessed portion (221) is small. Accordingly, the cross-sectional area of ​​the support end portion (133a) may decrease as it moves toward the recessed portion (221).

[0193] However, the support bearing (133) may be in contact with a predetermined area so that the spray rotor (200) can rotate stably. That is, it may be provided so that it is closer to surface contact than point contact so that the spray rotor (200) can rotate stably. In this drawing, the support end (133a) is depicted as having a predetermined radius (r2).

[0194] That is, the moment due to the frictional force generated between the support end (133a) and the recessed portion (221) may be a value obtained by multiplying the frictional force by the radius (r2) of the support end (133a). Since the radius (r2) of the support end (133a) is small, both the frictional force and the moment generated thereby may be small. Accordingly, the rotation of the injection rotor (200) may be smooth.

[0195] Additionally, a frictional force may be applied between the duct bearing (120) and the nozzle portion (211). The frictional force between the duct bearing (120) and the nozzle portion (211) may occur between the duct bearing (120) and the sealing portion (2111a, 2111b). Therefore, the moment due to the frictional force generated in the injection rotor (200) rotating about the duct bearing (120) may be a value obtained by multiplying the frictional force generated between the duct bearing (120) and the sealing portion (2111a, 2111b) by the distance (r3) to the sealing portion (2111a, 2111b).

[0196] While the injection rotor (200) rotates around the duct bearing (120), friction may occur between the duct bearing (120) and the sealing portions (2111a, 2111b). However, due to the labyrinth seal structure including the first sealing portion (2111a) and the second sealing portion (2111b), contact between the duct bearing (120) and the sealing portions (2111a, 2111b) may be minimized. That is, the frictional force generated between the duct bearing (120) and the sealing portions (2111a, 2111b) may be negligible. Accordingly, the moment due to the frictional force generated between the duct bearing (120) and the sealing portions (2111a, 2111b) may also be negligible.

[0197] In this way, even though the spray rotor (200) has a smaller size than the spray arm (421), the rotation of the spray rotor (200) can be smoothly achieved by minimizing the force that impedes the rotation of the spray rotor (200).

[0198] FIG. 14 is a drawing illustrating a partial configuration of an injection rotor according to one embodiment of the present disclosure. FIG. 14 is a drawing illustrating a partial configuration of an injection rotor according to one embodiment of the present disclosure.

[0199] Referring to FIGS. 14 and 15, the injection rotor (200) according to one embodiment of the present disclosure may include a protruding rib (260).

[0200] The protruding rib (260) may include a first protruding rib (261) and a second protruding rib (262). The first protruding rib (261) may have a different shape from the second protruding rib (262). In the present invention, the protruding rib (260) is illustrated as being formed on the nozzle body (210), but is not limited thereto, and the protruding rib (260) may be formed on the base body (220).

[0201] Hereinafter, the protruding rib (260) is described as an example formed in the nozzle body (210). The protruding rib (260) may extend in the same direction as the direction in which the washing water is supplied. A rib groove (270) for accommodating the protruding rib (260) may be formed in the base body (220). When the protruding rib (260) is accommodated in the rib groove (270), the nozzle body (210) and the base body (220) can be prevented from rotating separately when the spray rotor (200) rotates. That is, the nozzle body (210) and the base body (220) can rotate together.

[0202] The rib groove (270) may include a first rib groove (271) and a second rib groove (272). The first rib groove (271) may be configured to accommodate a first protruding rib (261). The first rib groove (271) may have a shape corresponding to the first protruding rib (261).

[0203] The second rib home (272) may be provided to accommodate the second protruding rib (262). The second rib home (272) may have a shape corresponding to the second protruding rib (261).

[0204] The first protruding rib (260) may have a shape that cannot be accommodated in the second rib groove (272). The second protruding rib (261) may have a shape that cannot be accommodated in the first rib groove (271). Therefore, when combining the nozzle body (210) and the base body (220), the first protruding rib (261) may need to be arranged at a position that can be accommodated in the first rib groove (271), and the second protruding rib (262) may need to be arranged at a position that can be accommodated in the first rib groove (272).

[0205] Therefore, misassembly can be prevented. The injection rotor (200) includes a plurality of protruding ribs (260) having different shapes, so that the productivity of the injection rotor (200) can be increased. In the present disclosure, the protruding ribs (260) are illustrated as including a first protruding rib (261) and a second protruding rib (262) having a different shape from the first protruding rib (261), but are not limited thereto, and the protruding ribs (260) may include a third protruding rib having a different shape from the first protruding rib (261) and the second protruding rib (262).

[0206] The first protruding rib (261) may be provided in multiple numbers. The first rib grooves (271) may be provided in a number corresponding to the number of first protruding ribs (261). That is, the first rib grooves (271) may be provided in multiple numbers.

[0207] The second protruding rib (262) may be provided in multiple numbers. The second rib grooves (272) may be provided in a number corresponding to the number of second protruding ribs (262). That is, the second rib grooves (272) may be provided in multiple numbers.

[0208] The protruding rib (260) is accommodated in the rib groove (270) so that the lower end of the protruding rib (260) can touch the bottom surface of the rib groove (270). Therefore, even when the nozzle body (210) and the base body (220) are pressed in the vertical direction, the nozzle body (210) and the base body (220) can be maintained at a height that allows them to be coupled between the duct bearing (120) and the duct holder (130). That is, the tolerance of the spray rotor (200) coupled between the duct bearing (120) and the duct holder (130) can be minimized. In addition, the spray rotor (200) can be prevented from being separated from the duct bearing (120) and the duct holder (130).

[0209] FIG. 16 is a drawing illustrating the action of washing water sprayed from a spray rotor according to one embodiment of the present disclosure.

[0210] Referring to FIG. 16, the upper injection port (210a) of the injection rotor (200) according to one embodiment of the present disclosure can spray the washing water in a different direction from the propulsion injection port (200a).

[0211] The spray direction (W1) of the washing water through the upper spray port (210a) may be inclined upwards relative to the radius (r1) of the spray rotor (200). Accordingly, the washing water may be arranged to be sprayed upwards inside the dishes stored in the upper basket (53). That is, the washing water through the upper spray port (210a) may be sprayed upwards of the dishes stored in the first inclined support member (5312a) and / or the second inclined support member (5312b).

[0212] The spray direction (W2) of the washing water through the propulsion nozzle (200a) may not be inclined in the radius (r1) direction and the height direction of the spray rotor (200). Accordingly, the washing water may be arranged to be sprayed to the lower part of the inside of the dishes stored in the upper basket (53). That is, the washing water through the propulsion nozzle (200a) may be sprayed to the lower part of the dishes stored in the first inclined support member (5312a) and / or the second inclined support member (5312b).

[0213] A dishwasher (1) according to one embodiment includes a tub (12) for accommodating dishes, a spray rotor (200) rotatable by spraying washing water onto the dishes, and a duct (100) including a duct bearing (120) for supporting the spray rotor (200) to be rotatable and supplying washing water from the duct body (110) to the spray rotor (200), and a duct holder (130) for supporting the spray rotor (200) to be rotatable together with the duct bearing (120), and the spray rotor (200) includes a nozzle body (210) coupled to the duct bearing (120) to receive washing water from the duct bearing (120) and including a protruding rib (260) extending in the same direction as the direction in which the washing water is supplied, and a nozzle body (210) coupled to the nozzle body (210) to receive washing water introduced into the nozzle body (210) and to rotate together with the nozzle body (210). It includes a base body (220) in which a rib groove (270) for accommodating a protruding rib (260) is formed.

[0214] The above protruding rib (260) may include a first protruding rib (261) and a second protruding rib (262) formed in a different shape from the first protruding rib (261) to prevent misassembly, and the rib groove (270) may include a first rib groove (271) that accommodates the first protruding rib (260) and has a shape corresponding to the shape of the first protruding rib (260) and a second rib groove (272) that accommodates the second protruding rib (262) and has a shape corresponding to the shape of the second protruding rib (262).

[0215] The number of the first protruding ribs (261) may be plural, the number of the second protruding ribs (262) may be plural, the number of the first rib grooves (271) may be provided to correspond to the first protruding ribs (261), and the number of the second rib grooves (272) may be provided to correspond to the second protruding ribs (262).

[0216] The above-mentioned spray rotor (200) may further include a spray port provided to spray washing water toward the dishes.

[0217] The above nozzle may include a propulsion nozzle (200a) formed on the outer surface of the injection rotor (200).

[0218] The inner surface of the above-mentioned propulsion nozzle (200a) may be formed to be inclined with respect to the tangent line of the outer surface of the injection rotor (200) on which the above-mentioned propulsion nozzle (200a) is formed so as to generate rotational force of the above-mentioned injection rotor (200).

[0219] The above nozzle is configured to spray the washing water in a direction different from the direction in which the above propulsion nozzle sprays, and may include an upper nozzle (210a) formed in the nozzle body (210).

[0220] The above injection rotor (200) may further include a sealing body (230) provided to cover the joint portion of the nozzle body (210) and the base body (220).

[0221] The above sealing body (230) can be formed by double molding.

[0222] The above injection rotor (200) may include a cutting surface (240) in which a portion of the outer circumference of the nozzle body (210) and the base body (220) is cut to prevent molding defects of the sealing body (230).

[0223] The above injection rotor (200) may further include a hook (250) that connects the nozzle body (210) and the base body (220).

[0224] The cross-sectional area of ​​the nozzle portion (211) may be arranged to gradually increase as the flow path extends in the direction in which the washing water is supplied.

[0225] The above base body (220) may be formed with a sunken recess (221) so as to be supported by the duct (100) holder (130).

[0226] A dishwasher (1) according to one embodiment includes a duct (100) including a basket (50) provided to store dishes, a spray rotor (200) for spraying washing water onto the dishes, a duct body (110) provided to allow the washing water to flow, a duct bearing (120) for supporting the spray rotor (200) to be rotatable and supplying washing water from the duct body (110) to the spray rotor (200), and a duct holder (130) for supporting the spray rotor (200) to be rotatable together with the duct bearing (120), and the spray rotor (200) includes a nozzle body (210) including a first protruding rib (261) extending in the same direction as the direction in which the washing water is supplied and a second protruding rib (262) extending in the same direction as the first protruding rib (261) and formed in a different shape from the first protruding rib (261) to prevent misassembly, and the nozzle body (210). It includes a base body (220) formed with a first rib groove (271) that accommodates the first protruding rib (261) and a second rib groove (272) that accommodates the second protruding rib (262), and a sealing body (230) that is provided to cover the joint portion of the nozzle body (210) and the base body (220).

[0227] The first rib groove (271) may be formed on the inner bottom surface of the base body (220), and the second rib groove (272) may be formed on the inner bottom surface of the base body (220).

[0228] The above-mentioned injection rotor (200) may further include a cutting surface (240) in which a portion of the outer circumferential surface of the nozzle body (210) and the base body (220) is cut off.

[0229] The injection rotor (200) may further include a hook (250) that connects the nozzle body (210) and the base body (220).

[0230] The above hook (250) can be formed on the cutting surface (240).

[0231] According to the invention, the cleaning performance of a dishwasher can be improved.

[0232] According to the invention, a dishwasher may include a miniaturized spray unit.

[0233] According to the invention, misassembly can be prevented during the manufacture of a dishwasher.

[0234] According to the invention, misassembly can be prevented during the manufacture of the injection unit.

[0235] According to the invention, a dishwasher may include a bearing having reduced friction.

[0236] 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 will be clearly understood by a person having ordinary skill in the art to which the present disclosure pertains.

[0237] 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. A tub to accommodate dishes; A rotatable spray rotor that sprays washing water onto the above dishes; and A duct including a duct bearing for supporting the spray rotor so that it can rotate and supplying washing water to the spray rotor, and a duct holder for supporting the spray rotor so that it can rotate together with the duct bearing; The above injection rotor, A nozzle body coupled to the duct bearing to receive washing water from the duct bearing and including a protruding rib extending in the same direction as the direction in which the washing water is supplied; and A dishwasher comprising a base body coupled with the nozzle body to receive washing water flowing into the nozzle body, and having a rib groove formed to receive the protruding rib so as to rotate together with the nozzle body.

2. In paragraph 1, The above protruding rib includes a first protruding rib and a second protruding rib formed in a different shape from the first protruding rib to prevent misassembly. A dishwasher, wherein the rib home includes a first rib home that accommodates the first protruding rib and has a shape corresponding to the shape of the first protruding rib, and a second rib home that accommodates the second protruding rib and has a shape corresponding to the shape of the second protruding rib.

3. In paragraph 2, The number of the above first protruding ribs is plural, The number of the above second protruding ribs is plural, The number of the first rib home is provided to correspond to the number of the first protruding rib, A dishwasher in which the number of the second rib home is provided to correspond to the number of the second protruding rib.

4. In paragraph 1, A dishwasher wherein the spray rotor further includes a spray port configured to spray washing water toward the dishes.

5. In paragraph 4, A dishwasher wherein the above nozzle includes a propulsion nozzle formed on the outer surface of the nozzle rotor.

6. In paragraph 5, A dishwasher in which the inner surface of the above-mentioned propulsion nozzle is formed to be inclined with respect to the tangent line of the outer surface of the above-mentioned spray rotor in which the above-mentioned propulsion nozzle is formed to generate rotational force of the above-mentioned spray rotor.

7. In paragraph 5, A dishwasher comprising an upper nozzle formed in the nozzle body, wherein the nozzle is configured to spray washing water in a direction different from the direction in which the propelling nozzle sprays.

8. In paragraph 1, A dishwasher wherein the spray rotor further includes a sealing body provided to cover a joint portion of the nozzle body and the base body.

9. In paragraph 8, The above sealing body is a dishwasher formed by double molding.

10. In paragraph 9, A dishwasher in which the above-mentioned spray rotor includes a cutting surface in which a portion of the outer circumference of the nozzle body and the base body is cut to prevent molding defects of the sealing body.

11. In paragraph 10, A dishwasher wherein the spray rotor further includes a hook that connects the nozzle body and the base body.

12. In Article 11 The above hook is a dishwasher formed on the above cutting surface.

13. In paragraph 1, A dishwasher including a nozzle part formed on the inner surface of the nozzle body to form a flow path for washing water supplied from the duct bearing.

14. In paragraph 14, A dishwasher in which the cross-sectional area of ​​the nozzle part is designed to gradually increase as the flow path extends in the direction in which the washing water is supplied.

15. In paragraph 1, A dishwasher in which the base body is formed with a sunken recess to be supported by the duct holder.

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