Dishwasher

Abstract

This dishwasher comprises: a tub forming a washing chamber; an inflow duct provided such that air discharged from the washing chamber flows therethrough; a heat transfer device for drying the air flowing through the inflow duct; a discharge duct provided such that the air flowing in the heat transfer device flows therethrough; a connecting duct which connects the inflow duct and the discharge duct and accommodates the heat transfer device, and of which the bottom collects condensate water; and a self-priming pump which is disposed to be higher than the bottom of the connecting duct, and which pumps the condensate water in the connecting duct.

Description

dishwasher

[0001] The present disclosure relates to a dishwasher.

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

[0003] A dishwasher may include a main body, a tub disposed inside the main body, a sump provided to receive water, a basket disposed inside the tub to store dishes, a spray device provided to spray washing water toward dishes, and a drying device for drying dishes.

[0004] For example, a dishwasher may include a thermoelectric element, a heat pump, a heater, a desiccant, etc. to provide dry air into the tub.

[0005] Embodiments of the present disclosure provide a dishwasher with improved drying performance.

[0006] Embodiments of the present disclosure provide a dishwasher capable of effectively draining condensate.

[0007] Embodiments of the present disclosure provide a dishwasher that can utilize space efficiently.

[0008] The technical problems to be solved in this document are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art to which this invention belongs from the description below.

[0009] A dishwasher according to an exemplary embodiment of the present disclosure comprises: a tub for forming a washing chamber; an inlet duct for air discharged from the washing chamber to flow through; a heat transfer device provided to dry the air entering through the inlet duct; an exhaust duct for air passing through the heat transfer device to flow through; a connecting duct connecting the inlet duct and the exhaust duct and accommodating the heat transfer device, wherein the bottom of the connecting duct is provided to collect condensate; and a self-priming pump configured to pump the condensate within the connecting duct. The self-priming pump is positioned above the bottom of the connecting duct.

[0010] A dishwasher according to an exemplary embodiment of the present disclosure comprises: a tub for forming a washing chamber; an inlet duct for air discharged from the washing chamber to flow through; a heat transfer device including a cooling unit provided to cool air entering through the inlet duct and a heating unit provided to heat air passing through the cooling unit; an exhaust duct for air passing through the heating unit to flow through; a connecting duct connecting the inlet duct and the exhaust duct and accommodating the heat transfer device; a self-priming pump for pumping condensate generated in the cooling unit; and a guide duct. The guide duct connects the self-priming pump and the tub and is provided to guide the condensate pumped by the self-priming pump into the washing chamber.

[0011] A dishwasher according to an exemplary embodiment of the present disclosure comprises: a tub forming a washing chamber; an inlet duct arranged to allow air discharged from the washing chamber to flow; a heat transfer device arranged to dry the air flowing through the inlet duct; an exhaust duct arranged to allow air flowing through the heat transfer device to flow; a connecting duct connecting the inlet duct and the exhaust duct and arranged to accommodate the heat transfer device, wherein the bottom of the connecting duct is arranged to collect condensate; and a self-priming pump positioned above the bottom of the connecting duct and configured to pump condensate within the connecting duct.

[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 illustrates a tub of a dishwasher and some components surrounding the tub according to one embodiment of the present disclosure.

[0015] FIG. 4 illustrates a tub of a dishwasher according to one embodiment of the present disclosure and some configurations around the tub in a direction different from the direction shown in FIG. 3.

[0016] FIG. 5 illustrates a drying apparatus according to one embodiment of the present disclosure.

[0017] FIG. 6 illustrates a drying apparatus according to one embodiment of the present disclosure in a direction different from the direction shown in FIG. 5.

[0018] FIG. 7 is an exploded view of a drying apparatus according to one embodiment of the present disclosure.

[0019] FIG. 8 illustrates the airflow in a dishwasher according to one embodiment of the present disclosure.

[0020] FIG. 9 illustrates the flow of air and the flow of condensate in a dishwasher according to one embodiment of the present disclosure.

[0021] Figure 10 illustrates an enlarged portion of Figure 9.

[0022] FIG. 11 is a cutaway perspective view of a connecting duct of a dishwasher according to one embodiment of the present disclosure.

[0023] FIG. 12 is a perspective view of a connecting duct and a self-priming pump of a dishwasher according to one embodiment of the present disclosure.

[0024] FIG. 13 illustrates a connecting duct and a self-priming pump of a dishwasher according to one embodiment of the present disclosure in a direction different from that shown in FIG. 12.

[0025] FIG. 14 is a side view of a connecting duct and a self-priming pump of a dishwasher according to one embodiment of the present disclosure.

[0026] The various embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various modifications, equivalents, or substitutions of said embodiments.

[0027] In relation to the description of the drawings, similar reference numerals may be used for similar or related components.

[0028] The singular form of the noun corresponding to the item may include one or multiple items, unless the relevant context clearly indicates otherwise.

[0029] In this document, each of the phrases such as "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C", and "at least one of A, B, or C" may include any one of the items listed together in the corresponding phrase, or all possible combinations thereof.

[0030] The term "and / or" includes a combination of multiple related described components or any of the multiple related described components.

[0031] The terms "part," "module," and "component" may be implemented in hardware or software. Depending on the embodiments, a plurality of "parts," "modules," and "components" may be implemented as a single component, or a single "part," "module," or "component" may include a plurality of components.

[0032] Terms such as "first," "second," or "first" or "second" may be used simply to distinguish a component from another component and do not limit the components in other aspects (e.g., importance or order).

[0033] Where any (e.g., 1st) component is referred to as "coupled" or "connected" to another (e.g., 2nd) component, with or without the terms "functionally" or "communicationly," it means that said any component may be connected to said other component directly (e.g., via a wire), wirelessly, or through a third component.

[0034] Terms such as "include" or "have" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in this document, and do not preclude the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0035] When it is said that a component is "connected," "combined," "supported," or "in contact" with another component, this includes not only cases where the components are directly connected, combined, supported, or in contact, but also cases where they are indirectly connected, combined, supported, or in contact through a third component.

[0036] When it is said that a component is located "on" another component, this includes not only cases where one component is in contact with the other, but also cases where another component exists between the two components.

[0037] The meaning of "identical" includes items that are similar in attributes or similar within a certain range. Furthermore, "identical" implies "substantially identical." In the sense of being substantially identical, numerical values ​​that fall within the margin of error in manufacturing or differences that do not hold significance relative to a reference value should be understood as being included within the scope of being "identical."

[0038] Meanwhile, terms such as "front," "rear," "left," "right," "up," and "down" 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 "rear" may each be defined based on the X-axis shown in the drawings. For example, "left" and "right" may each be defined based on the Y-axis shown in the drawings. For example, "up" and "down" may each be defined based on the Z-axis shown in the drawings.

[0039] For example, referring to FIGS. 1 and FIGS. 2, the direction in which the door (11) of the dishwasher (1) faces can be defined as the front (+X direction), and the opposite direction can be defined as the rear (-X direction).

[0040] Hereinafter, embodiments according to the present disclosure will be described with reference to the attached drawings.

[0041] 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.

[0042] The dishwasher (1) may include a main body (10). The main body (10) may form the exterior of the dishwasher (1).

[0043] The dishwasher (1) may include a tub (12) provided inside the main body (10). The tub (12) may be provided in a roughly box shape.

[0044] One side of the tub (12) may be open. For example, the tub (12) may have an opening (12a). The opening (12a) may be formed at the front of the tub (12).

[0045] The dishwasher (1) may include a receiving space (C) formed by a tub (12). The receiving space (C) may be defined as an inner space of the tub (12). The receiving space (C) may be formed inside the main body (10).

[0046] The receiving space (C) of the dishwasher (1) may be referred to as the washing room (C). The washing room (C) may refer to a space where dishes placed in a storage container are washed and dried.

[0047] The dishwasher (1) may include a door (11) provided to open and close the opening (12a) of the tub (12). The door (11) may be installed on the main body (10) to open and close the opening (12a) of the tub (12). The door (11) may be detachably mounted on the main body (10). The door (11) may be rotatably mounted on the main body (10). For example, the door (11) may be rotatably coupled to the main body (10) through a hinge.

[0048] For example, the upper part of the door (11) may be rotatably provided with respect to the tub (12) with respect to the lower part of the door (11). The lower part of the door (11) may be rotatably fixed to the main body (10). When the door (11) opens the opening (12a) of the tub (12), it may open from the upper side of the opening (12a).

[0049] The dishwasher (1) may include a storage container (50) provided for storing dishes. The storage container (50) may be placed inside the tub (12).

[0050] The storage container (50) may include a plurality of baskets (51, 52, 53). The plurality of baskets (51, 52, 53) may be arranged to store various tableware. However, it is not limited thereto, and the storage container (50) may include a single basket.

[0051] The storage container (50) may include an intermediate basket (52) positioned in the middle of the height direction (Z direction) of the dishwasher (1). The intermediate basket (52) may be introduced into or withdrawn from the washing chamber (C) through the opening (12a) of the tub (12). The intermediate basket (52) may be arranged to slide along an intermediate guide rail (13b). For example, the intermediate basket (52) may be arranged to be supported by the intermediate guide rail (13b). For example, the intermediate guide rail (13b) may be arranged to be movable along the approximately front-back direction (X direction) relative to the tub (12).

[0052] The storage container may include a lower basket (51) located at the bottom in the height direction (Z direction) of the dishwasher (1). The lower basket (51) may be introduced into or withdrawn from the washing chamber (C) through the opening (12a) of the tub (12). For example, the lower basket (51) may include a basket roller (51a), and the basket roller (51a) may be arranged to move along a support (12d) formed on the lower side wall (12b) of the tub (12). For example, the support (12d) may extend along the approximately front-rear direction (X direction). For example, the support (12d) may be formed with a step difference from the lower surface (12c) 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 arranged to be slidable by a separate guide rail.

[0053] Relatively bulky tableware can be stored in the multiple baskets (51, 52). However, the types of tableware stored in the multiple baskets (51, 52) are not limited to relatively bulky tableware. That is, not only relatively bulky tableware but also relatively small tableware can be stored in the multiple baskets (51, 52).

[0054] The storage container (50) may include an upper basket (53) located 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 tableware can be stored. For example, cooking tools or cutlery such as ladles, knives, spatulas, etc., can be stored in the upper basket (53). Small cups such as espresso cups can be stored in the upper basket (53). However, the types of tableware stored in the upper basket (53) are not limited to the above examples.

[0055] The upper basket (53) can slide along the upper guide rail (13c). For example, the upper basket (53) can be provided to be supported by the upper guide rail (13c). For example, the upper guide rail (13c) can be provided to move along the approximately front-rear direction (X direction) relative to the tub (12). For example, the upper guide rail (13c) can be provided to slide along the approximately front-rear direction (X direction) by means of a fixed roller fixed to the side of the tub (12).

[0056] The lower basket (51), middle basket (52), and upper basket (53) are named based on their relative positions for convenience of explanation, and the expressions “lower,” “middle,” and “upper” do not limit the position of the baskets.

[0057] The dishwasher (1) may include a spray device (40) provided to spray water. Here, water refers to water for washing dishes and may refer to both water mixed with detergent and / or rinse and water not mixed with detergent and / or rinse. The spray device (40) may spray water into the tub (12). The spray device (40) may spray water into the washing chamber (C). The spray device (40) may spray water toward dishes stored in a storage container (50).

[0058] The injection device (40) may include at least one injection unit. For example, the injection device (40) may include a plurality of injection units (41, 42, 43).

[0059] For example, the spray device (40) may include a first spray unit (41) positioned below 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) positioned above the lower basket (51) in the height direction (Z direction) of the dishwasher (1). The spray device (40) may include a third spray unit (43) positioned above the upper basket (53) in the height direction (Z direction) of the dishwasher (1). However, it is not limited thereto, and the spray device may include two or fewer or four or more spray units.

[0060] Each of the plurality of spray units (41, 42, 43) may be arranged to spray water while rotating. That is, each of the first spray unit (41), the second spray unit (42), and the third spray unit (43) may be arranged to spray cleaning water while rotating. The plurality of spray units (41, 42, 43) may be referred to as a plurality of spray rotors (41, 42, 43). Each of the first spray unit (41), the second spray unit (42), and the third spray unit (43) may be referred to as the first spray rotor (41), the second spray rotor (42), and the third spray rotor (43).

[0061] However, the spraying device (40) may spray water in a manner different from the example described above. For example, the first spraying unit (41) may be fixed to one side of the lower surface (12c) of the tub (12). At this time, the first spraying unit (41) is configured to spray cleaning water in a roughly horizontal direction by means of a fixed nozzle, and the cleaning water sprayed in a roughly horizontal direction from the nozzle of the first spraying unit (41) may be directed upward by means of a switching assembly (not shown) disposed inside the cleaning chamber (C). The switching assembly may be installed on a rail (not shown) and configured to be movable translationally along the rail. Meanwhile, although the first spraying unit (41) was described as an example, the second spraying unit (42) and the third spraying unit (43) may also be configured to spray cleaning water using a fixed nozzle in the same manner as the example described above.

[0062] 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 chamber (C). For example, to facilitate water collection in the sump (70), the lower surface (12c) of the tub (12) may be provided to slope downward toward the sump (70). Water from the washing chamber (C) may flow along the slope of the lower surface (12c) of the tub (12) and flow smoothly into the sump (70). The sump (70) may be provided to supply washing water to at least one of a plurality of spray units (41, 42, 43).

[0063] The dishwasher (1) may include a circulation pump (71) provided to pump water stored in a sump (70). The water pumped by the circulation pump (71) may flow to a spray device (40). The circulation pump (71) may be placed in a machine room (L). The circulation pump (71) may be provided as part of the sump (70).

[0064] The dishwasher (1) may include a drain pump (72) for draining water and / or foreign matter (e.g., food residue, etc.) remaining in the sump (70). Water pumped by the drain pump (72) may be discharged outside the main body (10). The drain pump (72) may be placed in the machine room (L). The drain pump (72) may be provided as part of the sump (70).

[0065] The dishwasher (1) may include a wash water pipe (30). The wash water pipe (30) may be provided to guide water in the sump (70) to a spray device (40). The wash water pipe (30) may connect the sump (70) and the spray device (40). The wash water pipe (30) may include a shape that extends approximately in the height direction (Z direction).

[0066] The dishwasher (1) may include a machine room (L). The machine room (L) may be a space provided below the tub (12). The machine room (L) may be placed below the washing room (C). The machine room (L) may be partitioned from the washing room (C). The dishwasher (1) may include a base frame (20) forming the machine room (L).

[0067] At least a portion of the sump (70) may be placed in the machine room (L). For example, most of the sump (70) may be placed in the machine room (L). That is, the area of ​​the sump (70) located in the washing room (C) may be smaller than the area of ​​the sump (70) located in the machine room (L). By reducing the area of ​​the sump (70) that occupies the washing room (C), the area of ​​the washing room (C) can be secured. As a result, the capacity of the washing room (C) is increased, and dish storage capacity can be improved.

[0068] The dishwasher (1) may include a filter (60). The filter (60) may be provided to filter foreign substances contained in the wash water flowing into the sump (70). The wash water filtered by the filter (60) may be delivered to the spray device (40) via the sump (70). The filter (60) may be detachably mounted on the sump (70). At least a portion of the filter (60) may be placed inside the sump (70). For example, the filter (60) may include at least one of a fine filter, a coarse filter, or a micro filter.

[0069] FIG. 3 illustrates a tub of a dishwasher and some components surrounding the tub according to one embodiment of the present disclosure. FIG. 4 illustrates a tub of a dishwasher and some components surrounding the tub according to one embodiment of the present disclosure in a direction different from that illustrated in FIG. 3. FIG. 5 illustrates a drying device according to one embodiment of the present disclosure. FIG. 6 illustrates a drying device according to one embodiment of the present disclosure in a direction different from that illustrated in FIG. 5. FIG. 7 is an exploded view of a drying device according to one embodiment of the present disclosure.

[0070] The dishwasher (1) may include a drying device (80). The drying device (80) may dry dishes placed in the tub (12). The drying device (80) may provide drying air to the washing chamber (C). The drying device (80) may heat the air in the washing chamber (C) and supply it back to the washing chamber (C). The drying device (80) may be configured to lower the humidity in the washing chamber (C).

[0071] At least a portion of the drying device (80) may be placed between the tub (12) and the main body (10). At least a portion of the drying device (80) may be placed between one side wall (12b) of the tub (12) and one side wall (10b, see FIG. 8) of the main body (10). At least a portion of the drying device (80) may be placed in the machine room (L).

[0072] The dishwasher (1) may include a water tank (100). The water tank (100) may be provided to store water to be supplied to the washing chamber (C). As illustrated in the drawing, the water tank (100) may be provided as part of the drying device (80). However, unlike as illustrated in the drawing, the water tank (100) may be provided as a separate component from the drying device (80).

[0073] The water tank (100) may be placed on one side of the tub (12). The water tank (100) may be mounted on the outside of the tub (12). The water tank (100) may be placed between one side wall (12b) of the tub (12) and one side wall (10b, see FIG. 8) of the main body (10).

[0074] A water tank (100) can be formed by combining a first tank case (101) and a second tank case (102). For example, the first tank case (101) and the second tank case (102) can be heat-fused. By combining the first tank case (101) and the second tank case (102), a storage space (110), an inlet duct (150), an outlet duct (160), a guide duct (190), etc., can be formed. For example, the water tank (100) may include an inlet duct (150), an outlet duct (160), and a guide duct (190).

[0075] The dishwasher (1) may include air ducts (150, 160, 400). The drying device (80) may include air ducts (150, 160, 400). The air ducts (150, 160, 400) may be connected to the washing room (C). The air ducts (150, 160, 400) may be configured to allow air to flow. The air ducts (150, 160, 400) may be provided to allow air to be drawn into the washing room (C) or to discharge air into the washing room (C).

[0076] The dishwasher (1) may include an inlet duct (150) for air discharged from the washing chamber (C) to flow through. The inlet duct (150) may be provided to guide the air discharged from the washing chamber (C) to a heat transfer device (500). The inlet duct (150) may guide humid air within the washing chamber (C) to the heat transfer device (500).

[0077] The dishwasher (1) may include an exhaust duct (160) for exhausting air into the washing chamber (C). The exhaust duct (160) may be configured to allow air passing through the heat transfer device (500) to flow. The exhaust duct (160) may guide dry air generated by the heat transfer device (500) into the tub (12).

[0078] For example, an inlet duct (150) and an outlet duct (160) may each be provided inside the water tank (100). That is, the inlet duct (150) and the outlet duct (160) may each be positioned between one side wall (12b) of the tub (12) and one side wall (10a) of the main body (10). The inlet duct (150) and the outlet duct (160) may be partitioned inside the water tank (100). The inlet duct (150) and the outlet duct (160) may extend along one outer surface of the tub (12). For example, the inlet duct (150) and the outlet duct (160) may have a shape that extends in the vertical direction (Z direction). However, the present disclosure is not limited to the examples described above, and the inlet duct (150) and the outlet duct (160) may be formed as separate components from the water tank (100) and disposed outside the water tank (100).

[0079] The dishwasher (1) may include a connecting duct (400) connecting an inlet duct (150) and an outlet duct (160). The connecting duct (400) may accommodate a heat transfer device (500). A detailed description of the connecting duct (400) will be provided later.

[0080] The dishwasher (1) may include a guide duct (190). The guide duct (190) may be provided to guide condensate into the washing chamber (C). Condensate may refer to condensate generated in the air ducts (150, 160, 400). Condensate may be generated as humid air discharged from the washing chamber (C) is dried by a heat transfer device (500) or condensed due to a temperature difference between the tub (12) and the main body (10). The guide duct (190) may be referred to as a condensate duct (190).

[0081] For example, the guide duct (190) may be provided inside the water tank (100). That is, the guide duct (190) may be positioned between one side wall (12b) of the tub (12) and one side wall (10a) of the main body (10). The guide duct (190) may be partitioned from the inlet duct (150) and the outlet duct (160) inside the water tank (100). The guide duct (190) may extend along one outer surface of the tub (12). For example, the guide duct (190) may have a shape that extends in the vertical direction (Z direction). However, the present disclosure is not limited to the examples described above, and the guide duct (190) may be formed as a separate configuration from the water tank (100) and positioned outside the water tank (100).

[0082] The dishwasher (1) may include a first inlet (170). The drying device (80) may include a first inlet (170). The first inlet (170) may connect the washing room (C) and the inlet duct (150). Air inside the washing room (C) may be introduced into the inlet duct (150) through the first inlet (170).

[0083] The dishwasher (1) may include a first fan (300). The drying device (80) may include a first fan (300). The first fan (300) may be positioned at a location corresponding to the first inlet (170). The first fan (300) may form an air flow to introduce air from the washing chamber (C) into the air duct (150, 160, 400) or to discharge air from the air duct (150, 160, 400) into the washing chamber (C).

[0084] The dishwasher (1) may include a first outlet (180). The drying device (80) may include a first outlet (180). The first outlet (180) may connect the washing room (C) with the exhaust duct (160). The first outlet (180) may discharge air flowing through the exhaust duct (160) into the washing room (C). The first outlet (180) may connect the washing room (C) with the guide duct (190). Condensate flowing through the guide duct (190) may be discharged into the washing room (C).

[0085] The dishwasher (1) may include a connecting duct (400) that connects an inlet duct (150) and an outlet duct (160). The connecting duct (400) may be provided on the lower side of the water tank (100). The connecting duct (400) may be placed in the machine room (L). The connecting duct (400) may be mounted on the base frame (20). The connecting duct (400) may be placed behind the sump (70). The connecting duct (400) may be mounted on the rear end of the base frame (20) inside the machine room (L).

[0086] The connecting duct (400) can be combined with the water tank (100). By connecting the connecting duct (400) to the water tank (100), the connecting duct (400) can connect the inlet duct (150) and the outlet duct (160). Inside the connecting duct (400), a flow path can be formed through which air introduced from the inlet duct (150) flows toward the outlet duct (160).

[0087] The connecting duct (400) may include a duct body (410), a first cover (420) coupled to one side of the duct body (410), and a second cover (430) coupled to the other side of the duct body (410). For example, the first cover (420) may be coupled to the lower side of the duct body (410), and the second cover (430) may be coupled to the upper side of the duct body (410). The first cover (420) may be placed below the second cover (430). As an example, the first cover (420) may include a bottom (400a) of the connecting duct (400) and a drain hole (450, see FIG. 11).

[0088] The connecting duct (400) may include a first connecting duct coupling part (419) for connecting to the inlet duct (150). For example, the first connecting duct coupling part (419) may be formed in the duct body (410). By connecting the first connecting duct coupling part (419) of the connecting duct (400) to the inlet duct coupling part (159) of the inlet duct (150), the connecting duct (400) and the inlet duct (150) can be connected. Accordingly, air introduced from the washing room (C) into the inlet duct (150) can flow into the connecting duct (400).

[0089] The connecting duct (400) may include a second connecting duct coupling part (439) for connecting to the exhaust duct (160). For example, the second connecting duct coupling part (439) may be formed in the second cover (430). By connecting the second connecting duct coupling part (439) of the connecting duct (400) to the exhaust duct coupling part (169) of the exhaust duct (160), the connecting duct (400) and the exhaust duct (160) can be connected. Accordingly, air within the connecting duct (400) can be discharged to the washing room (C) through the exhaust duct (160).

[0090] A connecting duct (400) may be provided to collect condensate. The bottom (400a) of the connecting duct (400) may be provided to collect condensate. The connecting duct (400) may include a storage section (440), in which condensate separated from air may be stored. The storage section (440) may include a predetermined space defined by the bottom (400a) of the connecting duct (400) and the side wall of the connecting duct (400) extending upward from the bottom (400a) of the connecting duct (400).

[0091] The dishwasher (1) may include a heat transfer device (500). The drying device (80) may include a heat transfer device (500). The heat transfer device (500) may be provided to cool or heat the air within the air duct (150, 160, 400).

[0092] The heat transfer device (500) may be placed inside the connecting duct (400). The heat transfer device (500) may be accommodated in the connecting duct (400). The heat transfer device (500) may be provided within the machine room (L). The heat transfer device (500) may be located at the bottom of the tub (12). The heat transfer device (500) may be located below the bottom surface (12c) of the tub (12). The heat transfer device (500) may be located behind the sump (70).

[0093] The heat transfer device (500) can cool or heat the air within the connecting duct (400). The heat transfer device (500) can dry the air entering through the inlet duct (150). The heat transfer device (500) can generate dry air. Humid air discharged from the washing room (C) can be dried as it passes through the heat transfer device (500). The air that has passed through the heat transfer device (500) can be supplied to the washing room (C) through the exhaust duct (160).

[0094] For example, the heat transfer device (500) may include at least one of a thermoelectric element (510), a heat pump, a heater, and a desiccant (e.g., zeolite). Hereinafter, for convenience of explanation, an example in which the heat transfer device (500) includes a thermoelectric element (510) will be described.

[0095] The heat transfer device (500) may include a thermoelectric element (510). The thermoelectric element (510) may be a semiconductor device that converts electrical energy into thermal energy using the thermoelectric effect. The thermoelectric element (510) may also be referred to as a thermoelectric semiconductor device, a Peltier device, etc. The thermoelectric element (510) may have a thin cuboid shape. A substrate and electrodes, etc., may be provided inside the thermoelectric element (510).

[0096] The thermoelectric element (510) may include an absorption surface (511) and a heat generation surface (512). When current is applied to the thermoelectric element (510), an absorption action may occur at the absorption surface (511) and a heat generation action may occur at the heat generation surface (512). The absorption surface (511) may be provided on one side of the thermoelectric element (510), and the heat generation surface (512) may be provided on the other side of the thermoelectric element (510). For example, the absorption surface (511) may be provided on the lower surface of the thermoelectric element (510), and the heat generation surface (512) may be provided on the upper surface of the thermoelectric element (510).

[0097] The heat transfer device (500) may include a wire (513) connected to the thermoelectric element (510) to supply power to the thermoelectric element (510). One end of the wire (513) may be connected to one side of the thermoelectric element (510).

[0098] The wire (513) may include a first wire (5131) and a second wire (5132). One end of the first wire (5131) may be connected to one end of one side of the thermoelectric element (510). One end of the second wire (5132) may be connected to the other end of one side of the thermoelectric element (510). For example, the thermoelectric element (510) may have a positive electrode and a negative electrode, and one end of the first wire (5131) may be electrically connected to the positive electrode, and one end of the second wire (5132) may be electrically connected to the negative electrode.

[0099] The heat transfer device (500) may include a sealing member (520). The sealing member (520) may seal the outer surface of the thermoelectric element (510). In other words, the sealing member (520) may seal the space between the thermoelectric element (510) and the duct body (410). Through this configuration, the sealing member (520) can block moisture, etc., that may enter from the outside of the thermoelectric element (510).

[0100] The heat transfer device (500) may include a cooling unit (530). The cooling unit (530) may be provided inside the connecting duct (400). The cooling unit (530) may be provided to cool the air flowing in through the inlet duct (150). The cooling unit (530) may be provided to cool the air inside the connecting duct (400). The cooling unit (530) may be configured to be in contact with the heat-absorbing surface (511) of the thermoelectric element (510). The cooling unit (530) may absorb heat from the air inside the connecting duct (400) and transfer the absorbed heat to the thermoelectric element (510).

[0101] As the cooling unit (530) cools the air within the connecting duct (400), condensate may be generated in the cooling unit (530). The condensate generated in the cooling unit (530) may be collected within the connecting duct (400). The condensate generated in the cooling unit (530) may be collected in the storage unit (440) of the connecting duct (400).

[0102] The cooling section (530) may be provided on one side of the thermoelectric element (510). For example, the cooling section (530) may be provided on the lower side of the thermoelectric element (510). That is, the cooling section (530) may be placed between the duct body (410) and the first cover (420).

[0103] The cooling section (530) may include a cooling plate (531). One side of the cooling plate (531) may be in contact with the heat-absorbing surface (511) of the thermoelectric element (510). The cross-section of the cooling plate (531) may be wider than the heat-absorbing surface (511) of the thermoelectric element (510). Through this configuration, the cooling efficiency of the heat transfer device (500) may be increased.

[0104] The cooling portion (530) may include a plurality of cooling fins (532). Each of the plurality of cooling fins (532) may protrude from the other side of the cooling plate (531).

[0105] Each of the plurality of cooling fins (532) may extend along the direction of air flow. The plurality of cooling fins (532) may be arranged in a direction intersecting the direction of air flow. For example, each of the plurality of cooling fins (532) may extend in the left-right direction (Y direction), and the plurality of cooling fins (532) may be arranged in the front-back direction (X direction). Through this configuration, the area cooled by the cooling unit (530) can be expanded. That is, the cooling efficiency of the heat transfer device (500) can be increased.

[0106] The heat transfer device (500) may include a heating unit (540). The heating unit (540) may be provided inside the connecting duct (400). The heating unit (540) may be provided to heat the air inside the connecting duct (400). The heating unit (540) may be configured to be in contact with the heating surface (512) of the thermoelectric element (510). The heating unit (540) may receive heat from the thermoelectric element (510) and release the received heat into the air inside the connecting duct (400).

[0107] The heating unit (540) may be provided on the other side of the thermoelectric element (510). For example, the heating unit (540) may be provided on the upper side of the thermoelectric element (510). That is, the heating unit (540) may be placed between the duct body (410) and the second cover (430).

[0108] The heating portion (540) may include a heating plate (541). One side of the heating plate (541) may be in contact with the heating surface (512) of the thermoelectric element (510). The cross-section of the heating plate (541) may be wider than the heating surface (512) of the thermoelectric element (510). Through this configuration, the heating efficiency of the heat transfer device (500) may be increased.

[0109] The heating unit (540) may include a plurality of heating pins (542). Each of the plurality of heating pins (542) may protrude from the other side of the heating plate (541).

[0110] Each of the plurality of heating fins (542) may extend along the direction of air flow. The plurality of heating fins (542) may be arranged in a direction intersecting the direction of air flow. For example, each of the plurality of heating fins (542) may extend in the left-right direction (Y direction), and the plurality of heating fins (542) may be arranged in the front-back direction (X direction). Through this configuration, the area heated by the heating unit (540) can be expanded. That is, the heating efficiency of the heat transfer device (500) can be increased.

[0111] The dishwasher (1) may include a self-priming pump (600). The drying device (80) may include a self-priming pump (600). The self-priming pump (600) may be provided to pump condensate. The self-priming pump (600) may be provided to pump condensate within the connecting duct (400). The self-priming pump (600) may discharge condensate generated inside the connecting duct (400) to the outside of the connecting duct (400). The self-priming pump (600) may be referred to as a condensate pump (600).

[0112] The dishwasher (1) may include a first connecting pipe (710). The drying device (80) may include a first connecting pipe (710). The first connecting pipe (710) may connect the connecting duct (400) and the self-priming pump (600). The first connecting pipe (710) may guide condensate within the connecting duct (400) to the self-priming pump (600). The first connecting pipe (710) may transfer condensate within the connecting duct (400) to the self-priming pump (600). As the self-priming pump (600) operates, condensate within the connecting duct (400) may flow to the self-priming pump (600) through the first connecting pipe (710).

[0113] The first connecting pipe (710) may be referred to as the first connecting hose (710), the first connecting tube (710), the first connecting channel (710), etc.

[0114] The dishwasher (1) may include a second connecting pipe (720). The drying device (80) may include a second connecting pipe (720). The second connecting pipe (720) may connect the self-priming pump (600) and the guide duct (190). The second connecting pipe (720) may guide the condensate within the self-priming pump (600) to the guide duct (190). The second connecting pipe (720) may transfer the condensate within the self-priming pump (600) to the guide duct (190). As the self-priming pump (600) operates, the condensate within the self-priming pump (600) may flow to the guide duct (190) through the second connecting pipe (720).

[0115] The second connecting pipe (720) may be referred to as the second connecting hose (720), second connecting tube (720), second connecting channel (720), etc.

[0116] Although the first connecting pipe (710) and the second connecting pipe (720) are depicted as separate components in the drawings, the present disclosure is not limited to what is shown in the drawings. The first connecting pipe (710) and the second connecting pipe (720) may be formed integrally. For example, the self-priming pump (600) may be a hose pump, and the first connecting pipe (710) and the second connecting pipe (720) may be provided as a single component and configured to penetrate the casing of the self-priming pump (600).

[0117] The dishwasher (1) may include a blower (800). The blower (800) may be provided to force air flow within the washing chamber (C). The blower (800) may form an airflow within the washing chamber (C). The blower (800) may cause forced convection within the washing chamber (C).

[0118] The blower (800) may be positioned on the other side of the tub (12). That is, the blower (800) may be positioned on the opposite side of the water tank (100). For example, the blower (800) may be positioned on the left side (-Y side) of the tub (12), and the water tank (100) may be positioned on the right side (+Y side) of the tub (12). However, the respective positions of the blower (800) and the water tank (100) are not limited to the examples described above.

[0119] The air in the washing chamber (C) can be actively flowed by the airflow formed by the blower (800) and the airflow formed by the first fan (300) and the air duct (150, 160, 400). Accordingly, the drying efficiency of the dishwasher (1) can be increased.

[0120] The blower device (800) may include a blower duct (810). The blower duct (810) may be connected to a washing room (C). The blower duct (810) may be configured to allow air to flow into the washing room (C) or to discharge air into the washing room (C).

[0121] The blower device (800) may include a second inlet (not shown), a second outlet (821), and a third outlet (822). Air introduced into the blower duct (810) through the second inlet (not shown) may pass through the blower duct (810) and be discharged through the second outlet (821) and the third outlet (822). Although the blower device (800) is depicted in the drawing as having two outlets (821, 822), there is no limit to the number of outlets of the blower device (800).

[0122] The blower device (800) may include a second fan (not shown). The second fan (not shown) may form an airflow to draw air from the washing room (C) into the blower duct (810). The second fan (not shown) may be placed inside the blower duct (810).

[0123] The dishwasher (1) may include a first inlet cover (910). The first inlet cover (910) may cover the first inlet (170) on the inside of the tub (12). The first inlet cover (910) may be coupled to the first inlet (170). The first inlet cover (910) may primarily prevent foreign matter in the washing chamber (C) from entering the air duct (150, 160, 400).

[0124] The dishwasher (1) may include a second inlet cover (920). The second inlet cover (920) may cover a second inlet (not shown) on the inside of the tub (12). The second inlet cover (920) may be attached to the second inlet (not shown). The second inlet cover (920) can primarily prevent foreign matter in the washing chamber (C) from entering the blower duct (810).

[0125] FIG. 8 illustrates the airflow in a dishwasher according to one embodiment of the present disclosure. FIG. 9 illustrates the airflow and condensate flow in a dishwasher according to one embodiment of the present disclosure. FIG. 10 illustrates an enlarged view of a portion of FIG. 9. FIG. 11 is a cutaway perspective view of a connecting duct of a dishwasher according to one embodiment of the present disclosure.

[0126] The water tank (100) may include a storage space (110) for storing water. The storage space (110) may be formed inside the water tank (100).

[0127] A plurality of guide ribs (111) may be formed in the storage space (110). The plurality of guide ribs (111) can guide water flowing into the storage space (110) to flow uniformly in multiple directions. Accordingly, the pressure applied to the water tank (100) by the water can be formed uniformly, thereby preventing the water tank (100) from swelling.

[0128] The water stored in the storage space (110) can be softened through a water softening device (not shown) provided inside or outside the water tank (100). Additionally, water softened through the water softening device (not shown) may be introduced into the storage space (110) and stored.

[0129] As described above, the water tank (100) can be positioned on one side of the tub (12). Through this configuration, the water stored in the storage space (110) can receive heat transfer from the washing chamber (C).

[0130] Water supplied to the storage space (110) from an external water source (not shown) can be prepared at a relatively low temperature. After the water is supplied to the storage space (110), heat is transferred from the washing room (C), so that the temperature of the water can have a temperature similar to that of the washing room (C). Accordingly, the amount of energy required to heat the water stored in the storage space (110) to a predetermined temperature for the washing process can be reduced.

[0131] The water tank (100) may include a water level control channel (121) and a water level control opening (122). The water level control channel (121) and the water level control opening (122) may be formed inside the storage space (110). When an amount of water exceeding a certain level flows into the storage space (110), the excess water flows into the water level control channel (121) and can be discharged into the washing room (C) through the water level control opening (122). Accordingly, an appropriate amount of water can always be stored inside the water tank (100).

[0132] The water tank (100) may include a water tank hole (130) provided to allow water to flow in from an external water source (not shown) or to discharge water into a sump (70, see FIG. 2). The water tank hole (130) may be provided at the bottom of the water tank (100).

[0133] The water tank (100) may include an inlet channel (140) connected to a water tank hole (130). Water flowing into the water tank (100) through the water tank hole (130) may pass through the inlet channel (140) and be discharged into a storage space (110).

[0134] The dishwasher (1) may include a valve (200). The valve (200) may be configured to open or close a connecting hole (112) provided at the bottom of the storage space (110). For example, the valve (200) may be configured as a solenoid valve.

[0135] Specifically, when the valve (200) opens the communication hole (112), the water stored in the storage space (110) can be discharged to the sump (70, see FIG. 2) through the water tank hole (130). Additionally, when the valve (200) closes the communication hole (112), water supplied from an external water source (not shown) can flow into the storage space (110) by passing through the water tank hole (130) and the inlet channel (140).

[0136] Referring to FIGS. 8 to 11, the airflow is described exemplarily. For convenience of explanation, the airflow in the drawings is indicated by dashed arrows.

[0137] Air inside the washing room (C) can flow into the inlet duct (150) through the first inlet (170). Air discharged from the washing room (C) can flow into the inlet duct (150). The inlet duct (150) can guide the air discharged from the washing room (C) into the connecting duct (400).

[0138] The connecting duct (400) can receive air discharged from the inlet duct (150). A heat transfer device (500) may be placed inside the connecting duct (400). The heat transfer device (500) may cool or heat the air inside the connecting duct (400) to generate dry air. For example, the heat transfer device (500) may include a cooling section (530) and a heating section (540), and the air flowing inside the connecting duct (400) may be dried as it passes through the cooling section (530) and the heating section (540).

[0139] Air passing through the heat transfer device (500) can flow into the exhaust duct (160). Air discharged from the connecting duct (400) can flow into the exhaust duct (160). The exhaust duct (160) can guide the air discharged from the connecting duct (400) into the washing room (C). Air within the exhaust duct (160) can flow into the washing room (C) through the first exhaust port (180).

[0140] In summary, air introduced from the washing room (C) into the inlet duct (150) flows into the connecting duct (400) and then passes through the discharge duct (160) to be discharged back into the washing room (C). That is, the air ducts (150, 160, 400) can form a circulation path together with the washing room (C).

[0141] Referring to FIG. 11, the connecting duct (400) may include a first flow path (P1) and a second flow path (P2). The first flow path (P1) may be formed by combining the duct body (410) and the first cover (420). The second flow path (P2) may be formed by combining the duct body (410) and the second cover (430). For example, the first flow path (P1) and the second flow path (P2) may each extend in the left-right direction (Y direction).

[0142] The first flow path (P1) may be formed upstream of the second flow path (P2). Air introduced from the inlet duct (150) into the connecting duct (400) may flow through the space between the duct body (410) and the first cover (420) and the space between the duct body (410) and the second cover (430) sequentially, and then flow into the discharge duct (160). Air introduced into the connecting duct (400) through the inlet duct (150) may flow through the first flow path (P1) and the second flow path (P2) sequentially, be discharged from the connecting duct (400), and then flow into the discharge duct (160).

[0143] The cooling unit (530) may be positioned between the duct body (410) and the first cover (420). The cooling unit (530) may be positioned on the first flow path (P1) formed between the duct body (410) and the first cover (420). The cooling unit (530) may cool the air flowing into the connecting duct (400) through the inlet duct (150). The first flow path (P1) may be configured to cool the air flowing into the connecting duct (400) through the cooling unit (530).

[0144] The air flowing through the first flow path (P1) can be cooled by the cooling section (530). Accordingly, the first flow path (P1) can be referred to as the cooling flow path (P1).

[0145] The heating unit (540) may be positioned between the duct body (410) and the second cover (430). That is, the heating unit (540) may be positioned on the second flow path (P2) formed between the duct body (410) and the second cover (430). The heating unit (540) may heat the air that has passed through the cooling unit (530). The heating unit (540) may heat the air that has passed through the first flow path (P1). The second flow path (P2) may be configured to heat the air that has passed through the first flow path (P1) through the heating unit (540).

[0146] The air flowing through the second flow path (P2) can be heated by the heating unit (540). Accordingly, the second flow path (P2) can be referred to as the heating flow path (P2).

[0147] The heating section (540) may be positioned downstream of the cooling section (530) based on the direction of air flow. Air introduced into the connecting duct (400) may be cooled by the cooling section (530), and air cooled after passing through the cooling section (530) may be reheated by the heating section (540).

[0148] The air flowing into the connecting duct (400) may be high-temperature and high-humidity air because it is air that has flowed in from the washing room (C) through the inlet duct (150). The cooling unit (530) can cool the high-temperature and high-humidity air to generate condensate and simultaneously form low-temperature and low-humidity air. The heating unit (540) can heat the air cooled by the cooling unit (530) to form high-temperature and low-humidity air. The air that has become high-temperature and low-humidity after passing through the heating unit (540) can be discharged to the washing room (C) through the discharge duct (160). The air discharged to the washing room (C) can absorb moisture from the washing room (C) and become high-temperature and high-humidity air again. The high-temperature and high-humidity air can be introduced back into the connecting duct (400) through the inlet duct (150).

[0149] That is, the high-temperature, high-humidity air in the washing room (C) can become high-temperature, low-humidity air by passing through the air ducts (150, 160, 400), and the high-temperature, low-humidity air can again become high-temperature, high-humidity air by absorbing moisture from the washing room (C). Then, the air in the washing room (C) can flow along the circulation path formed by the washing room (C) and the air ducts (150, 160, 400) together, and can repeatedly undergo the process described above. Accordingly, moisture inside the washing room (C) can be gradually removed.

[0150] Meanwhile, high-temperature air can have a higher saturated water vapor content than low-temperature air. That is, high-temperature air can contain a greater amount of water vapor than low-temperature air. Therefore, when high-temperature, low-humidity air is discharged into the washing room (C), a greater amount of moisture can be removed than when low-temperature, low-humidity air is discharged into the washing room (C). The discharge duct (160) can discharge the high-temperature, low-humidity air generated through the cooling unit (530) and the heating unit (540) into the washing room (C). Due to this configuration, the drying efficiency of the dishwasher (1) can be increased.

[0151] Referring to FIGS. 9 to 11, the flow of condensate is described exemplarily. For convenience of explanation, the flow of condensate in the drawings is indicated by solid arrows.

[0152] As air flows through the air duct (150, 160, 400), condensation may occur. Condensation may occur as the air discharged from the washing chamber (C) dries or as it condenses due to the temperature difference between the tub (12) and the main body (10).

[0153] Condensate can be collected in the connecting duct (400). Condensate can be stored in the storage section (440) of the connecting duct (400). Condensate may be generated as high-temperature, high-humidity air passes through the cooling section (530), and the condensate generated in the cooling section (530) may fall to the bottom (400a) of the connecting duct (400) due to its own weight. The bottom (400a) of the duct (400) may be positioned below the cooling section (530).

[0154] The connecting duct (400) may include a drain hole (450) provided to discharge condensate within the connecting duct (400). Condensate collected in the storage unit (440) may be discharged outside the connecting duct (400) through the drain hole (450). The drain hole (450) may be provided at the bottom of the storage unit (440). The bottom (400a) of the connecting duct (400) may guide the condensate collected in the storage unit (440) to the drain hole (450). The bottom (400a) of the connecting duct (400) may be configured to slope downward toward the drain hole (450). Condensate collected in the storage unit (440) may flow into the drain hole (450) by its own weight. A first connecting pipe (710) may be connected to the drain hole (450). The drain hole (450) can be connected to the first connecting pipe (710).

[0155] Condensate discharged from the drain hole (450) can flow to the self-priming pump (600) through the first connecting pipe (710). Condensate discharged from the self-priming pump (600) can flow to the guide duct (190) through the second connecting pipe (720). The guide duct (190) connects the self-priming pump (600) and the tub (12) and can guide the condensate pumped by the self-priming pump (600) to the washing room (C). The first end (191) of the guide duct (190) is in communication with the second connecting pipe (720), and the second end (192) of the guide duct (190) can be in communication with the first outlet (180). The condensate flowing through the guide duct (190) can be discharged to the washing room (C) through the first outlet (180).

[0156] Condensate collected in the connecting duct (400) can flow to the washing room (C) via the first connecting pipe (710), the self-priming pump (600), the second connecting pipe (720), the guide duct (190), and the first discharge port (180).

[0157] The first outlet (180) may be positioned higher than the highest water level (H, see FIG. 10) of the tub (12). This prevents backflow of condensate discharged through the first outlet (180). Additionally, it prevents water inside the tub (12) from passing through the first outlet (180) and flowing into the guide duct (190).

[0158] For example, the first discharge port (180) may discharge drying air flowing through the discharge duct (160) into the washing chamber (C) during the drying process, and discharge condensate flowing through the guide duct (190) into the washing chamber (C) before and / or after the drying process. However, the present disclosure is not limited to the examples described above, and if necessary, the first discharge port (180) may discharge drying air and condensate simultaneously into the washing chamber (C).

[0159] The guide duct (190) can discharge condensate to the washing room (C) rather than the sump (70). Since the guide duct (190) is not placed in the machine room (L), space in the machine room (L) can be secured more easily. The condensate flowing through the guide duct (190) may not mix with contaminants filtered by the filter (60) in the sump (70).

[0160] The guide duct (190) can discharge condensate into the washing chamber (C) rather than outside the main body (10). The condensate discharged into the washing chamber (C) can pass through the filter (60) and be stored in the sump (70). By reducing the amount of water required to fill the sump (70), the water usage of the dishwasher (1) can be reduced.

[0161] FIG. 12 is a perspective view of a connecting duct and a self-priming pump of a dishwasher according to one embodiment of the present disclosure. FIG. 13 illustrates the connecting duct and a self-priming pump of a dishwasher according to one embodiment of the present disclosure in a direction different from that shown in FIG. 12. FIG. 14 is a side view of the connecting duct and a self-priming pump of a dishwasher according to one embodiment of the present disclosure.

[0162] The connecting duct (400) may include a pump holder (460) for mounting a self-priming pump (600). The self-priming pump (600) may be detachably mounted to the pump holder (460). For example, the pump holder (460) may be formed in the duct body (410).

[0163] The dishwasher (1) may include a bracket (90). The bracket (90) may be configured to be connectable to a pump holder (460) so as to maintain the state in which the self-priming pump (600) is mounted on the pump holder (460). When the self-priming pump (600) is mounted on the pump holder (460), the bracket (90) may be connected to the pump holder (460). For example, the bracket (90) may be screw-connected to the pump holder (460).

[0164] The connecting duct (400) may include a first pipe holder (470) for securing a first connecting pipe (710). The first connecting pipe (710) may be detachably mounted to the first pipe holder (470). For example, the first pipe holder (470) may be formed in the first cover (420).

[0165] The connecting duct (400) may include a second pipe holder (480) for securing a second connecting pipe (720). The second connecting pipe (720) may be detachably mounted to the second pipe holder (480). The second pipe holder (480) may be positioned on top of the first pipe holder (470). For example, the second pipe holder (480) may be formed in the duct body (410).

[0166] The connecting duct (400) may include a fixed rib (490). The fixed rib (490) may protrude downward from the bottom (400a) of the connecting duct (400). The fixed rib (490) may be coupled to a fixed frame (22) that protrudes upward from the bottom (21) of the machine room (L). The fixed rib (490) may be supported by the fixed frame (22). By supporting the fixed rib (490) by the fixed frame (22), the connecting duct (400) can be stably positioned in the machine room (L).

[0167] Referring to FIGS. 12 through 14, the self-priming pump (600) may be positioned above the bottom end of the connecting duct (400). The self-priming pump (600) may be positioned above the bottom (400a) of the connecting duct (400). The self-priming pump (600) may be positioned above the drain hole (450) of the connecting duct (400). The self-priming pump (600) may not be positioned below the connecting duct (400). Unlike what is shown in the drawings, the self-priming pump (600) may not be positioned in the machine room (L). For example, the self-priming pump (600) may be positioned above the machine room (L). Unlike a standard centrifugal pump, the self-priming pump (600) can pump condensate within the connecting duct (400) even if it is not positioned below the connecting duct (400). Thus, the connecting duct (400) can be installed at the lowest possible position, allowing the space of the machine room (L) to be utilized more efficiently and the area of ​​the washing room (C) to be increased relatively.

[0168] According to one embodiment of the present disclosure, at least a portion of the connecting duct (400) and the self-priming pump (600) may be accommodated in the machine room (L). The distance (d2) between the self-priming pump (600) and the floor (21) of the machine room (L) may be greater than the distance (d1) between the floor (400a) of the connecting duct (400) and the floor (21) of the machine room (L). Since the self-priming pump (600) is not placed under the connecting duct (400), the distance (d1) between the floor (400a) of the connecting duct (400) and the floor (21) of the machine room (L) can be reduced. The connecting duct (400) may be placed as close as possible to the floor (21) of the machine room (L).

[0169] Meanwhile, the self-priming pump (600) is a pump equipped with self-suction capabilities and can effectively pump water by utilizing the pressure difference with atmospheric pressure. Unlike a standard centrifugal pump, which must be positioned lower than the drain hole to suck water, the self-priming pump (600) can be flexibly placed in various environments without being constrained by the installation location. In particular, compared to a standard centrifugal pump, the self-priming pump (600) can completely discharge condensate within the connecting duct (400) without any residual water, thereby effectively preventing or reducing the formation of mold or rust that may occur within the connecting duct (400). Additionally, thanks to these characteristics, restrictions on the type of heat transfer device (500) accommodated in the connecting duct (400) can be reduced. For example, the heat transfer device (500) may include an open heater that is vulnerable to water. In addition, the noise generated when operating the self-priming pump (600) is lower than the noise generated when operating a general centrifugal pump, and the self-priming pump (600) does not require a separate priming process, making initial operation easy.

[0170] A dishwasher (1) according to one embodiment of the present disclosure comprises: a tub (12) forming a washing chamber (C); an inlet duct (150) provided for air discharged from the washing chamber (C) to flow through; a heat transfer device (500) provided for drying the air flowing through the inlet duct (150); an exhaust duct (160) provided for air flowing through the heat transfer device (500); a connecting duct (400) connecting the inlet duct and the exhaust duct and provided for accommodating the heat transfer device, wherein the bottom (400a) of the connecting duct is provided for collecting condensate; and a self-priming pump (600) configured to pump the condensate within the connecting duct (400). The self-priming pump (600) is positioned above the bottom (400a) of the connecting duct.

[0171] A dishwasher (1) according to one embodiment of the present disclosure may further include a machine room (L) provided below the washing room (C). The distance (d2) between the self-priming pump (600) and the floor (21) of the machine room (L) may be greater than the distance (d1) between the floor (400a) of the connecting duct (400) and the floor (21) of the machine room (L).

[0172] A dishwasher (1) according to one embodiment of the present disclosure may further include a guide duct (190) connecting the self-priming pump (600) and the tub (12). The guide duct (190) may be provided to guide condensate pumped by the self-priming pump to the washing chamber (C).

[0173] A dishwasher (1) according to one embodiment of the present disclosure may further include an outlet (180). The outlet (180) may be configured to connect the washing chamber (C) and the guide duct (190) and to discharge condensate flowing through the guide duct into the washing chamber (C).

[0174] According to one embodiment of the present disclosure, the outlet (180) may be located higher than the highest water level (H) of the tub (12).

[0175] According to one embodiment of the present disclosure, the discharge port (180) may be configured to connect the washing chamber (C) and the discharge duct (160) and to discharge air flowing through the discharge duct into the washing chamber (C).

[0176] A dishwasher (1) according to one embodiment of the present disclosure may further include a first connecting pipe (710) that connects the connecting duct (400) and the self-priming pump (600) and is provided to guide condensate within the connecting duct (400) to the self-priming pump (600). A dishwasher (1) according to one embodiment of the present disclosure may further include a second connecting pipe (720) that connects the self-priming pump (600) and the guide duct (190) and is provided to guide condensate within the self-priming pump (600) to the guide duct (190).

[0177] According to one embodiment of the present disclosure, the connecting duct (400) may include a drain hole (450) that is connected to the first connecting pipe (710) and is provided to discharge condensate within the connecting duct (400). The bottom (400a) of the connecting duct (400) may be sloped downward toward the drain hole (450).

[0178] According to one embodiment of the present disclosure, the heat transfer device (500) may include: a cooling section (530) provided to cool the air flowing through the inlet duct; a heating section (540) provided to heat the air flowing through the cooling section; and a thermoelectric element (510) provided to include at least two sides, with one side in contact with the cooling section and the other side in contact with the heating section. The connecting duct (400) may include: a duct body (410) on which the thermoelectric element is mounted, which includes at least two sides; a first cover (420) coupled to one side of the duct body to form a cooling channel (P1) for cooling the air flowing through the connecting duct; and a second cover (430) coupled to the other side of the duct body to form a heating channel (P2) for heating the air flowing through the cooling channel.

[0179] According to one embodiment of the present disclosure, the first cover (420) may be provided under the second cover (430).

[0180] A dishwasher (1) according to one embodiment of the present disclosure may further include a water tank (100) for storing water to be supplied to the washing chamber. The water tank (100) may include the inlet duct (150), the outlet duct (160), and the guide duct (190).

[0181] According to one embodiment of the present disclosure, the water tank (100) may be mounted on the outside of the tub (12).

[0182] According to one embodiment of the present disclosure, the connecting duct (400) may include a pump holder (460) provided to mount the self-priming pump (600).

[0183] According to one embodiment of the present disclosure, the connecting duct (400) may include: a first pipe holder (470) provided to fix the first connecting pipe (710); and a second pipe holder (480) provided on the first pipe holder and provided to fix the second connecting pipe (720).

[0184] A dishwasher (1) according to one embodiment of the present disclosure may further include a machine room (L) provided below the washing room (C) and provided to accommodate at least a portion of the connecting duct and the self-priming pump. The machine room (L) may include a fixed frame (22) protruding upward from the bottom (21) of the machine room. The connecting duct (400) may include a fixed rib (490) protruding downward from the bottom of the connecting duct so as to be coupled to the fixed frame (22) of the machine room.

[0185] A dishwasher (1) according to one embodiment of the present disclosure may include: a tub (12) for forming a washing chamber (C); an inlet duct (150) for air discharged from the washing chamber to flow through; a heat transfer device (500) comprising a cooling unit (530) provided to cool the air entering through the inlet duct and a heating unit (540) provided to heat the air passing through the cooling unit; an exhaust duct (160) for air passing through the heating unit to flow through; a connecting duct (400) connecting the inlet duct and the exhaust duct and accommodating the heat transfer device; a self-priming pump (600) for pumping condensate generated in the cooling unit (530); and a guide duct (190). The guide duct (190) may connect the self-priming pump (600) and the tub (12). The guide duct (190) may be provided to guide the condensate pumped by the self-priming pump (600) into the washing chamber (C).

[0186] A dishwasher (1) according to one embodiment of the present disclosure may further include a discharge port (180) provided to discharge condensate guided by the guide duct (190) into the washing chamber (C). The discharge port (180) may be positioned above the highest water level (H) of the tub (12).

[0187] According to one embodiment of the present disclosure, the self-priming pump (600) may be positioned above the bottom (400a) of the connecting duct.

[0188] A dishwasher (1) according to one embodiment of the present disclosure may further include: a first connecting pipe (710) configured to connect the connecting duct and the self-priming pump and to transfer condensate within the connecting duct to the self-priming pump; and a second connecting pipe (720) configured to connect the self-priming pump and the guide duct and to transfer condensate within the self-priming pump to the guide duct.

[0189] According to one embodiment of the present disclosure, the connecting duct (400) may include a pump holder (460) for mounting the self-priming pump. The dishwasher (1) may further include a bracket (90) that can be coupled to the pump holder to maintain the state in which the self-priming pump is mounted on the pump holder.

[0190] According to various exemplary embodiments of the present disclosure, the dishwasher (1) may include a self-priming pump (600). The self-priming pump (600) can effectively discharge condensate. The self-priming pump (600) can discharge condensate so that no residual water remains in the connecting duct (400). The self-priming pump (600) may be positioned above the lowest part of the connecting duct (400), and the connecting duct (400) may be positioned at the lowest possible position. This allows for the space of the washing room (C) to be relatively larger while efficiently utilizing the space of the machine room (L).

[0191] According to various exemplary embodiments of the present disclosure, the dishwasher (1) can guide condensate to the washing chamber (C). Since the condensate is discharged to the washing chamber (C) rather than the sump (70), contaminants filtered by the filter (60) within the sump (70) may not flow to the self-priming pump (600). Since the condensate is discharged to the washing chamber (C) rather than outside the main body (10), the water usage of the dishwasher (1) can be reduced.

[0192] The effects obtainable from the present disclosure are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the present disclosure belongs from the description below.

[0193] Specific embodiments have been illustrated and described above. However, the invention is not limited to the embodiments described above, and those skilled in the art may make various modifications without departing from the essence of the technical concept of the invention as described in the following claims.

Claims

1. A tub forming a washing chamber; An inlet duct provided to allow air discharged from the above washing chamber to flow; A heat transfer device provided to dry the air flowing through the above-mentioned inlet duct; An exhaust duct provided for air flowing through the above heat transfer device; A connecting duct that connects the inlet duct and the outlet duct and is provided to accommodate the heat transfer device, wherein the bottom of the connecting duct is provided to collect condensate; and A dishwasher comprising: a self-priming pump positioned above the bottom of the connecting duct and configured to pump condensate within the connecting duct.

2. In Paragraph 1, It further includes a machine room provided below the washing room above, and A dishwasher in which the distance between the above-mentioned self-priming pump and the floor of the above-mentioned machine room is greater than the distance between the floor of the above-mentioned connecting duct and the floor of the above-mentioned machine room.

3. In Paragraph 1, A dishwasher further comprising: a guide duct connecting the self-priming pump and the tub, and arranged to guide the condensate pumped by the self-priming pump into the washing chamber.

4. In Paragraph 3, A dishwasher further comprising: a discharge port connected to the washing chamber and the guide duct, and configured to discharge condensate flowing through the guide duct into the washing chamber.

5. In Paragraph 4, The above-mentioned outlet is a dishwasher located higher than the highest water level of the above-mentioned tub.

6. In Paragraph 4, The above-mentioned outlet is, A dishwasher configured to connect the washing room and the exhaust duct, and to discharge air flowing through the exhaust duct into the washing room.

7. In Paragraph 3, A first connecting pipe configured to connect the above connecting duct and the above self-priming pump, and to guide condensate within the above connecting duct to the above self-priming pump; and A dishwasher further comprising: a second connecting pipe that connects the self-priming pump and the guide duct and is provided to guide condensate within the self-priming pump to the guide duct.

8. In Paragraph 7, The above connecting duct is connected to a first connecting pipe and includes a drain hole provided to discharge condensate within the connecting duct. The bottom of the above-mentioned connecting duct is a dishwasher that slopes downward toward the above-mentioned drain hole.

9. In Paragraph 7, The above heat transfer device is, A cooling unit provided to cool the air flowing through the above-mentioned inlet duct; A heating unit provided to heat the air flowing through the cooling unit; and A thermoelectric element comprising at least two sides, wherein one side is in contact with the cooling portion and the other side is in contact with the heating portion; The above connecting duct is, A duct body comprising at least two sides, on which the thermoelectric element is mounted; A first cover coupled to one side of the duct body forming a cooling channel for cooling the air flowing through the connecting duct; and A dishwasher comprising: a second cover coupled to the other side of the duct body to form a heating channel for heating the air flowing through the cooling channel.

10. In Paragraph 9, The first cover above is a dishwasher provided under the second cover above.

11. In Paragraph 1, A dishwasher further comprising a water tank for storing water to be supplied to the washing chamber, the water tank including the inlet duct, the outlet duct, and the guide duct.

12. In Paragraph 11, The above water tank is a dishwasher mounted on the outside of the above tub.

13. In Paragraph 1, The above connecting duct is a dishwasher comprising a pump holder provided to mount the above self-priming pump.

14. In Paragraph 7, The above connecting duct is, A first pipe holder provided to fix the first connecting pipe; and A dishwasher comprising: a second pipe holder provided on the first pipe holder and provided to secure the second connecting pipe.

15. In Paragraph 1, A machine room provided below the washing room and provided to accommodate at least a portion of the connecting duct and the self-priming pump, comprising a fixed frame protruding upward from the floor of the machine room; further comprising The above connecting duct is, A dishwasher comprising a fixed rib protruding downward from the bottom of the connecting duct so as to be coupled to the fixed frame of the machine room.

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