Dishwasher and home appliance

Abstract

A dishwasher comprises: a tub for forming a washing chamber through which air can be discharged; an inlet duct; a connection duct; a discharge duct; and a thermoelectric device located below the tub and inside the connection duct, the thermoelectric device comprising a cooling unit configured to cool air and a heating unit configured to heat air. The inlet duct, the connection duct, the discharge duct, and the thermoelectric device are configured such that air discharged from the washing chamber flows to the connection duct through the inlet duct, the air is cooled by the cooling unit so that moisture is removed from the air in the connection duct, the air cooled by the cooling unit is heated by the heating unit, and the air heated by the heating unit flows to the discharge duct in order to be discharged into the washing chamber.

Description

Dishwashers and appliances

[0001] The present disclosure relates to a dishwasher and a home appliance having a drying function.

[0002] Appliances are a general term for electrical appliances and machines used in the home, including washing machines, dryers, refrigerators, dishwashers, and televisions. Appliances can have a variety of functions.

[0003] For example, home appliances may have a drying function. For example, a dishwasher may include a component for drying dishes, and a dryer may include a component for drying clothes. A washing machine may also include a component for drying washed clothes.

[0004] An appliance with a drying function may include a receiving space for receiving an object to be dried, and a device for providing dry air to the receiving space. For example, the device for providing dry air may include a heat pump device, a heater, a thermoelectric device, or the like.

[0005] A thermoelectric device is a device that uses the Peltier effect, which absorbs or generates heat when an electric current passes through it. For example, if two types of metals are connected and an electric current is passed through them, one terminal can absorb heat and the other terminal can generate heat depending on the direction of the current.

[0006] One aspect of the present disclosure provides a dishwasher and appliance with improved energy efficiency.

[0007] One aspect of the present disclosure provides a dishwasher and home appliance that can utilize space efficiently.

[0008] One aspect of the present disclosure provides a dishwasher and home appliance capable of reducing damage to a thermoelectric device.

[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 disclosure belongs from the description below.

[0010] A dishwasher according to the invention comprises a tub for forming a washing room from which air can be discharged, an inlet duct, a connecting duct, an outlet duct, and a thermoelectric device located at a lower portion of the tub and inside the connecting duct, the thermoelectric device including a cooling unit configured to cool air and a heating unit configured to heat air, wherein the inlet duct, the connecting duct, the outlet duct, and the thermoelectric device are configured such that air discharged from the washing room flows through the inlet duct to the connecting duct, the air is cooled by the cooling unit so that moisture is removed from the air in the connecting duct, the air cooled by the cooling unit is heated by the heating unit, and the air heated by the heating unit flows into the outlet duct to be discharged into the washing room.

[0011] A device according to the invention comprises a main body, a receiving space formed inside the main body through which air can be discharged, an inlet duct, a connection duct, an exhaust duct, a thermoelectric device located in the lower portion of the receiving space and inside the connecting duct, the thermoelectric device including a cooling unit configured to cool air and a heating unit configured to heat air, and a control unit configured to operate the thermoelectric device while the receiving space has a temperature below a predetermined temperature and to stop the thermoelectric device while the receiving space has a temperature exceeding the predetermined temperature. The thermoelectric device is operable to cool air by the cooling unit and to heat air by the heating unit. The inlet duct, the connecting duct, the exhaust duct, and the thermoelectric device are configured such that air discharged from the receiving space flows through the inlet duct to the connecting duct, the air is cooled by the cooling unit so that moisture is removed from the air in the connecting duct, the air cooled by the cooling unit is heated by the heating unit, and the air heated by the heating unit flows to the exhaust duct so as to be discharged into the receiving space.

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

[0013] FIG. 2 illustrates a cross-section of a dishwasher according to one embodiment of the present disclosure.

[0014] FIG. 3 illustrates a tub inside a dishwasher according to one embodiment of the present disclosure and some components around the tub.

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

[0016] FIG. 5 illustrates configurations for supplying dry air to a tub of a dishwasher according to one embodiment of the present disclosure.

[0017] FIG. 6 is an exploded view illustrating the components for supplying dry air to a tub of a dishwasher according to one embodiment of the present disclosure.

[0018] FIG. 7 is a cross-sectional view illustrating a portion of the components for supplying dry air to a tub of a dishwasher according to one embodiment of the present disclosure.

[0019] FIG. 8 illustrates the interior of a water tank of a dishwasher and its surrounding components according to one embodiment of the present disclosure.

[0020] Figure 9 illustrates a portion of a cross-section along line AA' shown in Figure 5.

[0021] Fig. 10 illustrates a portion of a cross-section along line BB' shown in Fig. 5.

[0022] FIG. 11 is a cross-sectional perspective view illustrating the internal configuration of a connection duct of a dishwasher according to one embodiment of the present disclosure.

[0023] FIG. 12 is a side cross-sectional view illustrating the internal configuration of a connection duct of a dishwasher according to one embodiment of the present disclosure.

[0024] FIG. 13 is a cross-sectional perspective view illustrating the internal configuration of a connecting duct according to one embodiment of the present disclosure.

[0025] FIG. 14 is a cross-sectional side view illustrating the internal configuration of a connecting duct according to one embodiment of the present disclosure.

[0026] FIG. 15 is a control block diagram of a dishwasher according to one embodiment of the present disclosure.

[0027] FIG. 16 is a flowchart illustrating a control method of a dishwasher according to one embodiment of the present disclosure.

[0028] Fig. 17 is a flowchart illustrating a method for controlling a drying process according to one embodiment of the present disclosure.

[0029] FIG. 18 is a side cross-sectional view of a clothes dryer according to one embodiment of the present disclosure.

[0030] It should be understood that the various embodiments and terms used in this document are not intended to limit the technical features described in this document to specific embodiments, but rather to encompass various modifications, equivalents, or alternatives of the embodiments.

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

[0032] The singular form of a noun corresponding to an item may include one or more of said items, unless the relevant context clearly indicates otherwise.

[0033] In this document, 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.

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

[0035] 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).

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] The terms "front", "back", "left", "right", "upper", "lower", etc. used in the following description are defined based on the drawing, but the shape and position of each component are not limited by the above terms. For example, the front side can be defined as the +X side, and the rear side can be defined as the -X side. For example, based on the drawing, the right side can be defined as the +Y side, and the left side can be defined as the -Y side. For example, based on the drawing, the upper side can be defined as the +Z side, and the lower side can be defined as the -Z side.

[0044] Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings.

[0045] The present disclosure relates to a home appliance (1). The home appliance (1) according to the present disclosure may include a dishwasher, a clothes dryer, and the like. An example (1a) of a dishwasher may be described with reference to FIGS. 1 to 17 . An example (1b) of a clothes dryer may be described with reference to FIG. 18 . However, the present disclosure is not limited thereto. For example, any home appliance having a receiving space formed inside a main body and configured to supply dry air to the receiving space may be included in the home appliance (1) according to the present disclosure.

[0046] FIG. 1 illustrates a dishwasher according to one embodiment of the present disclosure. FIG. 2 illustrates a cross-section of the dishwasher according to one embodiment of the present disclosure.

[0047] Referring to FIGS. 1 and 2, the dishwasher (1a) may include a main body (10). The main body (10) may form the exterior of the dishwasher (1a).

[0048] The dishwasher (1a) may include a tub (12) provided inside the main body (10). The tub (12) may be provided in a roughly box shape.

[0049] 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).

[0050] The dishwasher (1a) 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 on the inner side of the main body (10).

[0051] The receiving space (C) of the dishwasher (1a) may be referred to as a washing room (C). The washing room (C) may refer to a space where dishes placed in a storage container are washed and dried.

[0052] The dishwasher (1a) 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) via a hinge (15).

[0053] For example, the upper part of the door (11) may be provided to be rotatable relative to the tub (12) with the lower part of the door (11) as the center. 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 be opened from the upper side of the opening (12a). For example, during the drying process, as illustrated in FIG. 2, the door (11) may be provided to open the opening (12a) of the tub (12) to a predetermined range.

[0054] The dishwasher (1a) may include a storage container provided inside the tub (12) to store dishes.

[0055] The storage container may include a plurality of baskets (51, 52, 53). The plurality of baskets (51, 52, 53) may be configured to store various dishes. However, the present invention is not limited thereto, and the storage container may include a single basket.

[0056] The storage container may include an intermediate basket (52) positioned in the middle in the height direction (Z direction) of the dishwasher (1a). The intermediate basket (52) may be introduced into or withdrawn from the washing room (C) through the opening (12a) of the tub (12). The intermediate basket (52) may be provided to be supported by an intermediate guide rack (13b). For example, the intermediate basket (52) may be provided to be slidably moved by the intermediate guide rack (13b). For example, the intermediate guide rack (13b) may be installed on the inner surface of the tub (12).

[0057] The storage container may include a lower basket (51) positioned at the bottom in the height direction (Z direction) of the dishwasher (1a). The lower basket (51) may be introduced into or withdrawn from the washing room (C) through the opening (12a) of the tub (12). The lower basket (51) may be provided to be supported by a lower guide rack (13a). For example, the lower basket (51) may be provided to be slidably moved by the lower guide rack (13a). For example, the lower guide rack (13a) may be installed on the inner surface of the tub (12).

[0058] A plurality of baskets (51, 52) can store relatively large dishes. However, the types of dishes stored in the plurality of baskets (51, 52) are not limited to relatively large dishes. That is, the plurality of baskets (51, 52) can store not only relatively large dishes but also relatively small dishes.

[0059] The storage container may include an upper basket (53) positioned at the upper portion in the height direction (Z direction) of the dishwasher (1a). The upper basket (53) is formed in the form of a rack assembly and can store relatively small-volume dishes. For example, cooking tools or cutlery such as ladles, knives, and spatulas 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 dishes stored in the upper basket (53) are not limited to the above examples.

[0060] The upper basket (53) can be introduced into or withdrawn from the washing room (C) through the opening (12a) of the tub (12). The upper basket (53) can be provided to be supported by an upper guide rack (13c). For example, the upper basket (53) can be provided to be slidably moved by the upper guide rack (13c). For example, the upper guide rack (13c) can be installed on the inner surface of the tub (12).

[0061] The dishwasher (1a) may include a spray device (40) configured to spray washing water. The spray device (40) may spray washing water into a washing chamber (C). The spray device (40) may spray washing water toward dishes stored in a storage container. The spray device (40) may receive washing water from a sump assembly (70) to be described later.

[0062] 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).

[0063] 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 (1a). 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 (1a). 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 (1a). However, the present invention is not limited thereto, and the spray device may include two or fewer or four or more spray units.

[0064] Each of the plurality of spray units (41, 42, 43) may be arranged to spray the washing 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 the washing water while rotating. The plurality of spray units (41, 42, 43) may be referred to as a plurality of spray rotors (41, 42, 43). The first spray unit (41), the second spray unit (42), and the third spray unit (43) may be referred to as a first spray rotor (41), a second spray rotor (42), and a third spray rotor (43), respectively.

[0065] 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), unlike the second spray unit (42) and the third spray unit (43), may be fixed to one side of the lower surface (12d) of the tub (12). At this time, the first spray unit (41) is arranged 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 arranged to be translationally movable 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 arranged to spray the washing water by means of a fixed nozzle, similar to the above-described example.

[0066] The dishwasher (1a) may include an auxiliary spray device (30). The auxiliary spray device (30) may be disposed on a lower side of the washing chamber (C) and 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 arranged to spray washing water while rotating. The auxiliary spray device (30) may be referred to as an auxiliary spray unit (30). In addition, the auxiliary spray device (30) may be referred to as an auxiliary spray rotor (30).

[0067] 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). Hereinafter, the plurality of injection rotors may be a concept including at least two of the first injection rotor (41), the second injection rotor (42), the third injection rotor (43), or the auxiliary injection rotor (30).

[0068] The dishwasher (1a) may optionally be equipped with an auxiliary spray device (30). That is, the auxiliary spray device (30) may be omitted from the dishwasher (1a).

[0069] The dishwasher (1a) may include a sump assembly (70). The sump assembly (70) may be referred to as a sump (70).

[0070] The sump assembly (70) may be provided to accommodate washing water. The sump assembly (70) may collect washing water from the washing room (C). For example, to ensure smooth collection of water in the sump assembly (70), the lower surface (12d) of the tub (12) may be provided to slope downward toward the sump assembly (70). Washing water from the washing room (C) may flow along the slope of the lower surface (12d) of the tub (12) and smoothly flow into the sump assembly (70).

[0071] The dishwasher (1a) may include a circulation pump (71) that pumps wash water stored in the sump assembly (70) to the spray device (40). The circulation pump (71) may be provided as a component of the sump assembly (70). The circulation pump (71) may be placed in the machine room (L).

[0072] The dishwasher (1a) 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). The drain pump (72) may be placed in the machine room (L).

[0073] 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).

[0074] The dishwasher (1a) may include a pipe (14). The pipe (14) may be arranged to guide wash water from a sump assembly (70) to a spray device (40). The pipe (14) may include a shape extending approximately in the height direction (Z direction).

[0075] The dishwasher (1a) may include a machine room (L), which is a space provided below the tub (12). The machine room (L) may be a place where a configuration for circulating wash water is arranged. The dishwasher (1a) may include a base frame (20) forming the machine room (L). The machine room (L) may be partitioned from the washing room (C).

[0076] At least a portion of the sump assembly (70) may be placed in the machine room (L). For example, most of the sump assembly (70) may be placed in the machine room (L). That is, the area of ​​the sump assembly (70) located in the washing room (C) may be smaller than the area of ​​the sump assembly (70) located in the machine room (L). By reducing the area of ​​the sump assembly (70) occupying the washing room (C), the area of ​​the washing room (C) can be secured. Thereby, the capacity of the washing room (C) can be increased, and the dish storage capacity can be improved.

[0077] The dishwasher (1a) may include a filter (60). The filter (60) may be provided to filter foreign substances contained in wash water flowing into the sump assembly (70). Wash water filtered by the filter (60) may be delivered to the spray device (40) by the sump assembly (70). The filter (60) may be detachably mounted to the sump assembly (70). For example, the filter (60) may include at least one of a fine filter, a coarse filter, or a micro filter.

[0078] FIG. 3 illustrates a tub inside a dishwasher according to one embodiment of the present disclosure and some components around the tub. FIG. 4 illustrates a tub inside a dishwasher according to one embodiment of the present disclosure and some components around the tub in a direction different from the direction illustrated in FIG. 3. FIG. 5 illustrates components for supplying dry air to a tub of a dishwasher according to one embodiment of the present disclosure. FIG. 6 is an exploded view illustrating components for supplying dry air to a tub of a dishwasher according to one embodiment of the present disclosure. FIG. 7 is a cross-sectional view illustrating some components for supplying dry air to a tub of a dishwasher according to one embodiment of the present disclosure.

[0079] Referring to FIGS. 3 to 7, the dishwasher (1a) may include a water tank (100). The water tank (100) may be provided to store water to be supplied to the washing room (C).

[0080] The water tank (100) may be placed on one side of the tub (12). Specifically, the water tank (100) may be placed between one side wall (12b) of the tub (12) and one side wall (10a) of the main body (10).

[0081] The 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-sealed. By combining the first tank case (101) and the second tank case (102), a storage space (110), an inlet duct (150), and an outlet duct (160) can be formed.

[0082] The dishwasher (1a) may include a duct (150, 160, 400). The duct (150, 160, 400) may be connected to a washing room (C). The duct (150, 160, 400) may be configured to allow air within the washing room (C) to be introduced or to discharge air to the washing room (C).

[0083] The ducts (150, 160, 400) may include an inlet duct (150) for air discharged from the washing room (C) to flow, an exhaust duct (160) for discharging air to the washing room (C), and a connecting duct (400) connecting the inlet duct (150) and the exhaust duct (160).

[0084] The inlet duct (150) and the discharge duct (160) may each be provided inside the water tank (100). That is, the inlet duct (150) and the discharge duct (160) may each be arranged 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 discharge duct (160) may extend along one outer surface of the tub (12). For example, the inlet duct (150) and the discharge duct (160) may extend in the vertical direction.

[0085] The water tank (100) may include a first air inlet (151) formed at one end of an inlet duct (150). The first air inlet (151) may connect the washing room (C) and the inlet duct (150). Air within the washing room (C) may be introduced into the inlet duct (150) through the first air inlet (151).

[0086] The dishwasher (1a) may include a first fan device (300) configured to form an air flow. The first fan device (300) may be positioned corresponding to the first air inlet (151). The first fan device (300) may form an air flow to introduce air within the washing room (C) into the duct (150, 160, 400) or to discharge air within the duct (150, 160, 400) into the washing room (C).

[0087] The water tank (100) may include a first air outlet (161) formed at one end of the discharge duct (160). The first air outlet (161) may connect the washing room (C) and the discharge duct (160). Air within the discharge duct (160) may be discharged to the washing room (C) through the first air outlet (161).

[0088] A connecting duct (400) may be provided at 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 mounted on the base frame (20) at a rearward position relative to the portion where the sump assembly (70) is mounted. The connecting duct (400) may be mounted on the rear end of the base frame (20) inside the machine room (L).

[0089] The connecting duct (400) can be connected to the water tank (100). Through this configuration, the connecting duct (400) can connect the inlet duct (150) and the discharge duct (160). A flow path can be formed inside the connecting duct (400) through which air drawn in from the inlet duct (150) flows toward the discharge duct (160).

[0090] 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).

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

[0092] The thermoelectric device (500) may be placed inside the connecting duct (400). That is, the thermoelectric device (500) may be provided in the machine room (L). The thermoelectric device (500) may be accommodated in the connecting duct (400). The thermoelectric device (500) may be located at the lower portion of the tub (12). The thermoelectric device (500) may be located below the lower surface (12d) of the tub (12). The thermoelectric device (500) may be located behind the sump assembly (70). The thermoelectric device (500) may cool or heat the air within the connecting duct (400).

[0093] Since the thermoelectric device (500) may include a thermoelectric element (510), an element sealing member (520), a cooling unit (530), and a heating unit (540) to be described later, the space in which the thermoelectric device (500) is placed needs to be relatively wide. If the thermoelectric device (500) is placed in a narrow space, the assembly of the dishwasher (1a) may be hindered, and the efficiency of the thermoelectric device (500) may also be reduced.

[0094] According to the concept of the present disclosure, the machine room (L) in which the connecting duct (400) is arranged can form a relatively wide receiving space. Furthermore, a relatively wide space can also be provided within the connecting duct (400) in which the thermoelectric device (500) is arranged. In other words, sufficient space can be formed within the connecting duct (400) in which the thermoelectric device (500) can be arranged.

[0095] That is, by placing the connecting duct (400), which is a part of the duct (150, 160, 400), in the machine room (L) and placing the thermoelectric device (500) inside the connecting duct (400), both the assembly of the dishwasher (1a) and the efficiency of the thermoelectric device (500) can be improved.

[0096] The thermoelectric device (500) may include a thermoelectric element (510). The thermoelectric element (510) may be a semiconductor element that converts electrical energy into thermal energy using the thermoelectric effect. The thermoelectric element (510) may also be referred to as a thermoelectric semiconductor element, a Peltier element, or the like. The thermoelectric element (510) may have a thin hexahedral shape. A substrate, electrodes, and the like may be provided inside the thermoelectric element (510).

[0097] The thermoelectric element (510) can be mounted on the duct body (410). Specifically, the duct body (410) can be provided with an open thermoelectric element insertion portion (411), and the thermoelectric element (510) can be mounted on the duct body (410) by being inserted into the thermoelectric element insertion portion (411).

[0098] The thermoelectric element (510) may include a heat-absorbing surface (511) and a heat-generating surface (512). When current is applied to the thermoelectric element (510), heat absorption may occur on the heat-absorbing surface (511), and heat generation may occur on the heat-generating surface (512). The heat-absorbing surface (511) may be provided on one surface of the thermoelectric element (510), and the heat-generating surface (512) may be provided on the other surface of the thermoelectric element (510). For example, the heat-absorbing surface (511) may be provided on the lower surface of the thermoelectric element (510), and the heat-generating surface (512) may be provided on the upper surface of the thermoelectric element (510).

[0099] The thermoelectric 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 coupled to one surface of the thermoelectric element (510).

[0100] The wire (513) may include a first wire (5131) and a second wire (5132). One end of the first wire (5131) may be coupled to one end of one side of the thermoelectric element (510). One end of the second wire (5132) may be coupled 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.

[0101] The thermoelectric device (500) may include an element sealing member (520). The element sealing member (520) may seal the outer surface of the thermoelectric element (510). In other words, the element sealing member (520) may seal the space between the thermoelectric element (510) and the duct body (410). Through this configuration, the element sealing member (520) may block moisture or the like that may flow in from the outside of the thermoelectric element (510).

[0102] The thermoelectric device (500) may include a cooling unit (530) that is in contact with the heat-absorbing surface (511) of the thermoelectric element (510). The cooling unit (530) may be provided inside the connecting duct (400). The cooling unit (530) may be provided to cool the air within the connecting duct (400). Specifically, the cooling unit (530) may absorb heat from the air within the connecting duct (400) and transfer the absorbed heat to the thermoelectric element (510). As the cooling unit (530) cools the air within the connecting duct (400), condensation may occur in the cooling unit (530).

[0103] Condensate generated in the cooling unit (530) can be collected within the connecting duct (400). Specifically, the condensate generated in the cooling unit (530) can be collected in the storage unit (440) of the connecting duct (400).

[0104] The cooling unit (530) may be provided on one side of the thermoelectric element (510). For example, the cooling unit (530) may be provided on the lower side of the thermoelectric element (510). That is, the cooling unit (530) may be placed between the duct body (410) and the first cover (420).

[0105] The thermoelectric device (500) may include a heating unit (540) that is in contact with the heating surface (512) of the thermoelectric element (510). The heating unit (540) may be provided inside the connecting duct (400). The heating unit (540) may be provided to heat the air within the connecting duct (400). Specifically, the heating unit (540) may receive heat from the thermoelectric element (510) and release the received heat to the air within the connecting duct (400).

[0106] 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).

[0107] The dishwasher (1a) may include a condensate pump (600). The condensate pump (600) may be provided to discharge condensate generated inside the connection duct (400) by the cooling unit (530) to the outside of the connection duct (400).

[0108] Since the connecting duct (400) is placed in the machine room (L) provided at the bottom of the dishwasher (1a), it may be structurally difficult to discharge the condensate to the outside of the connecting duct (400) using only the condensate's own weight.

[0109] According to the idea of ​​the present disclosure, the dishwasher (1a) includes a condensate pump (600), so that condensate in the connection duct (400) can be easily discharged to the outside of the connection duct (400).

[0110] The dishwasher (1a) may include a first connecting hose (710) connecting a condensate pump (600) and a connecting duct (400). As the condensate pump (600) operates, condensate in the connecting duct (400) may flow to the condensate pump (600) through the first connecting hose (710).

[0111] The dishwasher (1a) may include a second connecting hose (720) connecting the condensate pump (600) and the water tank (100). Condensate pumped by the condensate pump (600) may flow to the water tank (100) through the second connecting hose (720).

[0112] The dishwasher (1a) may include a blower (800). The blower (800) may be configured to force air flow within the washing chamber (C). The blower (800) may form an air current within the washing chamber (C). The blower (800) may cause forced convection within the washing chamber (C).

[0113] The blower (800) may be placed on the other side of the tub (12). That is, the blower (800) may be placed on the opposite side of the water tank (100). For example, the blower (800) may be placed on the left side (-Y direction) of the tub (12), and the water tank (100) may be placed on the right side (+Y direction) of the tub (12). However, the positions where the blower (800) and the water tank (100) are placed are not limited thereto.

[0114] The air inside the washing room (C) can actively flow due to the air current formed by the blower device (800) and the air current formed by the first fan device (300) and the ducts (150, 160, 400). Accordingly, the drying efficiency of the dishwasher (1a) can be increased.

[0115] The blower device (800) may include a blower duct (810). The blower duct (810) may be in communication with the washing room (C). The blower duct (810) may be provided to allow air within the washing room (C) to be introduced or to discharge air to the washing room (C).

[0116] The blower (800) may include a second air inlet (not shown), a second air outlet (821), and a third air outlet (822). Air drawn into the blower duct (810) through the second air inlet (not shown) may pass through the blower duct (810) and be discharged through the second air outlet (821) and the third air outlet (822). By providing two air outlets (821, 822), the air within the washing room (C) may flow more actively.

[0117] The blower device (800) may include a second fan device (not shown). The second fan device (not shown) may create an air flow to draw air within the washing room (C) into the blower duct (810).

[0118] The dishwasher (1a) may include a first inlet cover (910). The first inlet cover (910) may cover the first air inlet (151) on the inside of the tub (12). The first inlet cover (910) may be coupled to the first air inlet (151). The first inlet cover (910) may primarily prevent foreign substances within the washing room (C) from entering the duct (150, 160, 400).

[0119] The dishwasher (1a) may include a second inlet cover (920). The second inlet cover (920) may cover a second air inlet (not shown) on the inside of the tub (12). The second inlet cover (920) may be coupled to the second air inlet (not shown). The second inlet cover (920) may primarily prevent foreign substances within the washing room (C) from entering the air duct (810).

[0120] FIG. 8 illustrates the interior of a water tank of a dishwasher according to one embodiment of the present disclosure and its surrounding components. FIG. 9 illustrates a portion of a cross-section taken along line AA' shown in FIG. 5. FIG. 10 illustrates a portion of a cross-section taken along line BB' shown in FIG. 5. FIG. 11 is a cross-sectional perspective view illustrating the interior configuration of a connection duct of a dishwasher according to one embodiment of the present disclosure. FIG. 12 is a side cross-sectional view illustrating the interior configuration of a connection duct of a dishwasher according to one embodiment of the present disclosure.

[0121] Referring to FIG. 8, 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).

[0122] A plurality of guide ribs (111) may be formed in the storage space (110). The plurality of guide ribs (111) may guide water flowing into the storage space (110) to flow uniformly in various directions. Accordingly, the pressure applied to the water tank (100) by the water may be formed at a constant level, thereby preventing the water tank (100) from becoming full.

[0123] The water stored in the storage space (110) may be softened through a softening device (not shown) installed inside or outside the water tank (100). In addition, water softened through the softening device (not shown) may be introduced into the storage space (110) and stored therein. Water softened through the softening device (not shown) may be referred to as wash water.

[0124] As described above, the water tank (100) can be placed on one side of the tub (12). Through this configuration, water stored in the storage space (110) can receive heat transfer from the washing room (C).

[0125] The water supplied to the storage space (110) from an external water source (not shown) can be provided at a relatively low temperature. After being supplied to the storage space (110), the water receives heat from the washing room (C), thereby achieving 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.

[0126] 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 a certain amount of water exceeding a certain level flows into the storage space (110), the excess water may flow into the water level control channel (121) and be discharged into the washing room (C) through the water level control opening (122). Accordingly, an appropriate amount of water may always be stored inside the water tank (100).

[0127] 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 to a sump assembly (70, see FIG. 3). The water tank hole (130) may be provided at the lower end of the water tank (100).

[0128] 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 the storage space (110).

[0129] The dishwasher (1a) may include a valve (200). The valve (200) may be configured to open or close a drain hole (112) provided at the lower end of the storage space (110). For example, the valve (200) may be provided as a solenoid valve.

[0130] Specifically, when the valve (200) opens the drain hole (112), water stored in the storage space (110) can be discharged to the sump assembly (70, see FIG. 3) through the water tank hole (130). In addition, when the valve (200) closes the drain hole (112), water supplied from an external water source (not shown) can flow into the storage space (110) through the water tank hole (130) and the water intake channel (140).

[0131] As described above, the inlet duct (150) and the discharge duct (160) may each be provided inside the water tank (100). Specifically, the inlet duct (150) and the discharge duct (160) may each be provided on one side of the storage space (110). However, the inlet duct (150) and the discharge duct (160) do not necessarily have to be provided inside the water tank (100). For example, the inlet duct (150) and the discharge duct (160) may be provided separately from the water tank (100) outside the water tank (100).

[0132] As described above, the connecting duct (400) can be coupled to the water tank (100) at the lower side of the water tank (100). In addition, the connecting duct (400) can 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).

[0133] The connecting duct (400) may include a first connecting duct joint (419) for connection with the inlet duct (150). By connecting the first connecting duct joint (419) of the duct body (410) with the inlet duct joint (152) formed at the other end of the inlet duct (150), the connecting duct (400) and the inlet duct (150) may be connected. Accordingly, air introduced into the inlet duct (150) from the washing room (C) may flow into the connecting duct (400).

[0134] Referring to FIG. 9, a dishwasher (1a) according to one embodiment of the present disclosure may include an inlet sealing member (170) for sealing between a first connecting duct joint (419) of a duct body (410) and an inlet duct joint (152) of an inlet duct (150). The inlet sealing member (170) may seal a portion where the first connecting duct joint (419) and the inlet duct (150) are connected. The inlet sealing member (170) may be provided to reduce air flowing from the inlet duct (150) to the connecting duct (410) from leaking out to the outside of the inlet duct (150) and the connecting duct (410). For example, the inlet sealing member (170) may include a material that is more flexible than a portion of the water tank (100) forming the connecting duct (410) and / or the inlet duct (150).

[0135] The inflow sealing member (170) may be provided between the outer side of the inflow duct joint (152) of the inflow duct (150) and the inner side of the first connection duct joint (419) of the duct body (410). For example, the inflow sealing member (170) may be coupled to an inflow sealing mounting member (153) formed at a portion of the outer circumference of the inflow duct joint (152), and may be provided so that the inflow duct joint (152) is coupled to the first connection duct joint (419) while the inflow sealing member (170) is coupled to the inflow sealing mounting member (153), thereby making contact with the first connection duct joint (419).

[0136] For example, the inlet sealing member (170) may include an inlet sealing protrusion (171) that is provided to be in close contact with the first connection duct joint (419) when the inlet duct joint (152) is joined to the first connection duct joint (419). The inlet sealing protrusion (171) may protrude toward the first connection duct joint (419).

[0137] For example, the inlet duct joint (152) may include an inlet mounting support (154) for supporting the inlet sealing member (170) while the inlet duct joint (152) is coupled to the first connection duct joint (419) while the inlet sealing member (170) is mounted on the inlet sealing mounting portion (153). The inlet mounting support (154) may reduce the inlet sealing member (170) coupled to the inlet sealing mounting portion (153) from being detached from the inlet sealing mounting portion (153) due to frictional force with the first connection duct joint (419) while the inlet duct joint (152) is coupled to the first connection duct joint (419). For example, the inlet mounting support (154) may extend in a direction perpendicular to the direction in which the inlet sealing member (170) is coupled to the inlet sealing mounting portion (153).

[0138] For example, the inlet duct coupling portion (152) may include an inlet separation support portion (155) for supporting the inlet sealing member (170) while the inlet duct coupling portion (152) is separated from the first connection duct coupling portion (419) while the inlet sealing member (170) is mounted on the inlet sealing mounting portion (153). The inlet separation support portion (155) may reduce the inlet sealing member (170) coupled to the inlet sealing mounting portion (153) from being separated from the inlet sealing mounting portion (153) due to frictional force with the first connection duct coupling portion (419) while the inlet duct coupling portion (152) is separated from the first connection duct coupling portion (419). For example, the inlet separation support portion (155) may extend in a direction perpendicular to the direction in which the inlet sealing member (170) is separated from the inlet sealing mounting portion (153).

[0139] For example, the inlet duct joint (152) may include an inlet mounting guide (156) that is provided to be guided in the mounting direction by the first connecting duct joint (419) while the inlet duct joint (152) is mounted to the first connecting duct joint (419). For example, the inlet mounting guide (156) may be formed to be inclined with respect to the direction in which the inlet duct joint (152) is mounted to the first connecting duct joint (419).

[0140] The connecting duct (400) may include a second connecting duct joint (439) for connection with the exhaust duct (160). By connecting the second connecting duct joint (439) of the second cover (430) with the exhaust duct joint (162) formed at the other end of the exhaust duct (160), the connecting duct (400) and the exhaust duct (160) may be connected. Accordingly, air within the connecting duct (400) may be discharged to the washing room (C) via the exhaust duct (160).

[0141] Referring to FIG. 10, a dishwasher (1a) according to one embodiment of the present disclosure may include a discharge sealing member (180) for sealing between a second connecting duct joint (439) of a duct body (410) and a discharge duct joint (162) of a discharge duct (160). The discharge sealing member (180) may seal a portion where the second connecting duct joint (439) and the discharge duct (160) are connected. The discharge sealing member (180) may be provided to reduce air flowing from the connecting duct (410) to the discharge duct (160) from leaking out to the outside of the discharge duct (160) and the connecting duct (410). For example, the discharge sealing member (180) may include a material that is more flexible than a portion of the water tank (100) forming the connecting duct (410) and / or the discharge duct (160).

[0142] The exhaust sealing member (170) may be provided between the outer side of the exhaust duct joint (162) of the exhaust duct (160) and the inner side of the second connection duct joint (439) of the duct body (410). For example, the exhaust sealing member (180) may be coupled to the exhaust sealing mounting member (163) formed on a portion of the outer circumference of the exhaust duct joint (162), and may be provided so that the exhaust duct joint (162) is coupled to the second connection duct joint (439) when the exhaust sealing member (180) is coupled to the exhaust sealing mounting member (163), thereby making contact with the second connection duct joint (439).

[0143] For example, the exhaust sealing member (180) may include an exhaust sealing protrusion (181) that is provided to be in close contact with the second connecting duct connecting portion (439) when the exhaust duct connecting portion (162) is connected to the second connecting duct connecting portion (439). The exhaust sealing protrusion (181) may protrude toward the second connecting duct connecting portion (439).

[0144] For example, the exhaust duct coupling portion (162) may include an exhaust mounting support portion (164) for supporting the exhaust sealing member (180) while the exhaust duct coupling portion (162) is coupled to the second connection duct coupling portion (439) while the exhaust sealing member (180) is mounted on the exhaust sealing mounting portion (163). The exhaust mounting support portion (164) may reduce the exhaust sealing member (180) coupled to the exhaust sealing mounting portion (163) from being detached from the exhaust sealing mounting portion (163) due to frictional force with the second connection duct coupling portion (439) while the exhaust duct coupling portion (162) is coupled to the second connection duct coupling portion (439). For example, the exhaust mounting support portion (164) may extend in a direction perpendicular to the direction in which the exhaust sealing member (180) is coupled to the exhaust sealing mounting portion (163).

[0145] For example, the exhaust duct coupling portion (162) may include a discharge separation support portion (165) for supporting the discharge sealing member (180) while the discharge duct coupling portion (162) is separated from the second connection duct coupling portion (439) while the discharge sealing member (180) is mounted on the discharge sealing mounting portion (163). The discharge separation support portion (165) may reduce the discharge sealing member (180) coupled to the discharge sealing mounting portion (163) from being separated from the discharge sealing mounting portion (163) due to frictional force with the second connection duct coupling portion (439) while the discharge duct coupling portion (162) is separated from the second connection duct coupling portion (439). For example, the discharge separation support portion (165) may extend in a direction perpendicular to the direction in which the discharge sealing member (180) is separated from the discharge sealing mounting portion (163).

[0146] For example, the exhaust duct coupling portion (162) may include an exhaust mounting guide (166) that is provided to be guided in the mounting direction by the second connecting duct coupling portion (439) while the exhaust duct coupling portion (162) is mounted to the second connecting duct coupling portion (439). For example, the exhaust mounting guide (166) may be formed to be inclined with respect to the direction in which the exhaust duct coupling portion (162) is mounted to the second connecting duct coupling portion (439).

[0147] Referring to FIGS. 3 and 8, in a dishwasher (1a) according to one embodiment of the present disclosure, an inlet duct coupling portion (152) and an outlet duct coupling portion (162) may be positioned at the rear of the dishwasher (1a). In a dishwasher (1a) according to one embodiment of the present disclosure, a first connection duct coupling portion (419) and a second connection duct coupling portion (439) may be positioned at the rear of the dishwasher (1a). The first connection duct coupling portion (419) and the second connection duct coupling portion (439) may be positioned at the rear from the center of the tub (12) in the front-rear direction. The inlet duct coupling portion (152) and the outlet duct coupling portion (162) may be positioned at the rear of the sump assembly (70). The first connecting duct joint (419) and the second connecting duct joint (439) may be positioned rearward of the sump assembly (70).

[0148] Referring to FIGS. 11 and 12, a first flow path (P1) may be formed by combining a duct body (410) and a first cover (420). A second flow path (P2) may be formed by combining a duct body (410) and a 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).

[0149] The first flow path (P1) may be formed on the upstream side of the second flow path (P1). That is, air flowing into the connection duct (400) from the inlet duct (150) may sequentially pass 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) and flow into the exhaust duct (160).

[0150] According to the concept of the present disclosure, air introduced into the inlet duct (150) from the washing room (C) can flow into the connecting duct (400) and then be discharged back into the washing room (C) via the discharge duct (160). That is, the ducts (150, 160, 400) can form a circulation path together with the washing room (C).

[0151] As described above, the cooling unit (530) may be placed between the duct body (410) and the first cover (420). That is, the cooling unit (530) may be placed on the first flow path (P1) formed between the duct body (410) and the first cover (420). Through this configuration, the cooling unit (530) may cool the air introduced into the connection duct (400) through the inlet duct (150).

[0152] Air passing through the first flow path (P1) can be cooled by the cooling unit (530). Accordingly, the first flow path (P1) can be referred to as a cooling flow path (P1).

[0153] As described above, the heating unit (540) can be placed between the duct body (410) and the second cover (430). That is, the heating unit (540) can be placed on the second flow path (P2) formed between the duct body (410) and the second cover (430). Since the second flow path (P2) is formed on the downstream side of the first flow path (P1), the heating unit (540) can heat the air that has passed through the first flow path (P1).

[0154] Air passing through the second passage (P2) can be heated by the heating unit (540). Accordingly, the second passage (P2) can be referred to as a heating passage (P2).

[0155] According to the concept of the present disclosure, the cooling unit (530) may be provided upstream of the heating unit (540) based on the flow direction of air flowing into the connecting duct (400). Accordingly, the air flowing into the connecting duct (400) may be cooled by the cooling unit (530), and the air cooled by passing through the cooling unit (530) may be heated again by the heating unit (540).

[0156] The air flowing into the connecting duct (400) may be high-temperature, high-humidity air because it is air flowing in from the washing room (C) through the inlet duct (150). The cooling unit (530) can cool the high-temperature, high-humidity air to generate condensate and simultaneously form low-temperature, low-humidity air. The heating unit (540) can heat the air cooled by the cooling unit (530) to form high-temperature, low-humidity air. The high-temperature, low-humidity air that passes through the heating unit (540) can be discharged into the washing room (C) through the discharge duct (160). The air discharged into the washing room (C) can absorb moisture in the washing room (C) and become high-temperature, high-humidity air again. The high-temperature, high-humidity air can be again introduced into the connecting duct (400) through the inlet duct (150).

[0157] That is, the high temperature and high humidity air in the washing room (C) can become high temperature and low humidity air by passing through the duct (150, 160, 400), and the high temperature and low humidity air can again become high temperature and high humidity air by absorbing moisture in the washing room (C). In addition, the air in the washing room (C) can repeatedly go through the process described above while flowing along the circulation path formed by the washing room (C) and the duct (150, 160, 400). Accordingly, moisture in the washing room (C) can be gradually removed.

[0158] Additionally, hot air can have a higher saturation water vapor content than cold air. That is, hot air can contain a greater amount of water vapor than cold air. Therefore, a greater amount of moisture can be removed when hot, low-humidity air is discharged into the cleaning chamber (C) than when cold, low-humidity air is discharged into the cleaning chamber (C).

[0159] According to the concept of the present disclosure, the exhaust duct (160) can discharge high temperature and low humidity air into the washing room (C) through the cooling unit (530) and the heating unit (540). This configuration can increase the drying efficiency of the dishwasher (1a).

[0160] The cooling unit (530) may include a cooling plate (531). One surface of the cooling plate (531) may be in contact with the heat absorption surface (511) of the thermoelectric element (510). The cross-section of the cooling plate (531) may be wider than the heat absorption surface (511) of the thermoelectric element (510). Through this configuration, the cooling efficiency of the thermoelectric device (500) may be increased.

[0161] The cooling unit (530) may include a plurality of cooling fins (532). Each of the plurality of cooling fins (532) may protrude from the other surface of the cooling plate (531).

[0162] A plurality of cooling fins (532) may extend along the direction in which the first flow path (P1) extends. The plurality of cooling fins (532) may be arranged in a direction intersecting the direction in which the first flow path (P1) extends. For example, the plurality of cooling fins (532) may extend in the left-right direction (Y direction) and may be arranged in the front-back direction (X direction). Through this configuration, the area cooled by the cooling unit (530) may be expanded. In other words, the cooling efficiency of the thermoelectric device (500) may be increased.

[0163] As the high temperature and high humidity air flowing along the first passage (P1) passes through the plurality of cooling fins (532), the air can be cooled, and condensate can be formed on the plurality of cooling fins (532). The condensate formed on the plurality of cooling fins (532) can fall down due to its own weight.

[0164] The cross-section of each of the plurality of cooling fins (532) (specifically, the cross-section on the YZ plane) may be rectangular. However, the cross-section of each of the plurality of cooling fins (532) is not limited thereto. For example, each of the plurality of cooling fins (532) may have a trapezoidal cross-section with an inclined lower portion. In this case, the condensate formed on each of the plurality of cooling fins (532) may flow along the lower portion of each of the plurality of cooling fins (532) and may be collected at the lower portion of each of the plurality of cooling fins (532) corresponding to the vertex of the trapezoid, and thus the condensate may more easily fall off from the plurality of cooling fins (532).

[0165] The heating unit (540) may include a heating plate (541). One surface 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 thermoelectric device (500) may be increased.

[0166] The heating unit (540) may include a plurality of heating fins (542). Each of the plurality of heating fins (542) may protrude from the other surface of the heating plate (541).

[0167] A plurality of heating fins (542) may extend along the direction in which the second flow path (P2) extends. The plurality of heating fins (542) may be arranged in a direction intersecting the direction in which the second flow path (P2) extends. Through this configuration, the area heated by the heating unit (540) may be expanded. In other words, the heating efficiency of the thermoelectric device (500) may be increased.

[0168] The connecting duct (400) may include a storage unit (440). The storage unit (440) may be provided to collect condensate generated in the cooling unit (530).

[0169] The storage unit (440) may be sunken into the bottom surface (400a) of the connection duct (400) provided below the thermoelectric device (500). Specifically, the storage unit (440) may be provided below the cooling unit (530). Through this configuration, condensate generated in the cooling unit (530) can be collected more effectively.

[0170] The connecting duct (400) may include a discharge hole (450). The discharge hole (450) may be provided to discharge condensate collected in the storage unit (440).

[0171] A discharge hole (450) may be provided at the lower end of the storage unit (440). The bottom surface (440a) of the storage unit (440) may be inclined to guide the condensate collected in the storage unit (440) to the discharge hole (450). Through this configuration, the condensate collected in the storage unit (440) may flow to the discharge hole (450) by its own weight.

[0172] The connecting duct (400) may include a plurality of protruding ribs (460). Each of the plurality of protruding ribs (460) may protrude from the bottom surface (440a) of the storage unit (440). Each of the plurality of protruding ribs (460) may be provided to guide condensate collected in the storage unit (440) to a discharge hole (450).

[0173] A first connection hose (710) may be connected to the discharge hole (450). That is, the first connection hose (710) may connect the condensate pump (600) and the discharge hole (450). Accordingly, the condensate collected in the storage unit (440) may flow to the condensate pump (600) through the first connection hose (710).

[0174] The condensate pump (600) may be provided to discharge the condensate collected in the storage unit (440) from the storage unit (440). For example, the condensate pump (600) may discharge the condensate collected in the storage unit (440) to the washing room (C). That is, the condensate pump (600) may pump the condensate collected in the storage unit (440) and discharge the pumped condensate to the washing room (C). For example, the condensate pumped by the condensate pump (600) may move to the water tank (100) through the second connecting hose (720) and then be discharged to the washing room (C) through the first air discharge port (161).

[0175] That is, the condensate collected in the storage unit (440) can be discharged to the washing room (C) by the condensate pump (600). The condensate discharged to the washing room (C) can be collected in the sump assembly (70, see FIG. 3) provided at the bottom of the washing room (C).

[0176] Although this document only describes an embodiment in which condensate is discharged to a washing room (C), the present disclosure is not limited thereto. For example, condensate may be discharged into a storage space (110) of a water tank (100) via a condensate pump (600). Through this configuration, the total amount of water supplied to the storage space (110) from an external water source (not shown) can be reduced.

[0177] Fig. 13 is a cross-sectional perspective view illustrating the internal configuration of a connecting duct according to one embodiment of the present disclosure. Fig. 14 is a side cross-sectional view illustrating the internal configuration of a connecting duct according to one embodiment of the present disclosure.

[0178] Hereinafter, a connection duct (400') and a thermoelectric device (500') according to one embodiment of the present disclosure will be described with reference to FIGS. 13 and 14. In describing the connection duct (400') and the thermoelectric device (500') illustrated in FIGS. 13 and 14, components that are substantially the same as those illustrated in FIGS. 1 to 12 are assigned the same reference numerals, and a detailed description thereof may be omitted.

[0179] Referring to FIGS. 13 and 14, the inlet duct joint (152) of the inlet duct (150) can be connected to the first connecting duct joint (419'), and the discharge duct joint (162) of the discharge duct (160) can be connected to the second connecting duct joint (439').

[0180] A flow path may be formed inside the connecting duct (400') through which air introduced from the inlet duct (150) flows toward the exhaust duct (160). Specifically, a third flow path (P3) provided relatively upstream and a fourth flow path (P4) provided relatively downstream may be formed inside the connecting duct (400'). That is, air introduced into the connecting duct (400') through the inlet duct (150) may sequentially pass through the third flow path (P3) and the fourth flow path (P4) and then be exhausted through the exhaust duct (160). Each of the third flow path (P3) and the fourth flow path (P4) may extend approximately in the vertical direction (Z direction).

[0181] A thermoelectric device (500') may be placed inside the connecting duct (400'). The thermoelectric device (500') may include a thermoelectric element (510'), a cooling unit (530'), and a heating unit (540'). The cooling unit (530') may be provided on one side of the thermoelectric element (510'), and the heating unit (540') may be provided on the other side of the thermoelectric element (510'). For example, the cooling unit (530') may be placed on the right side (+Y direction) of the thermoelectric element (510'), and the heating unit (540') may be placed on the left side (-Y direction) of the thermoelectric element (510').

[0182] The cooling unit (530') can be placed on the third flow path (P3). Through this configuration, the cooling unit (530') can cool the air flowing into the connection duct (400') through the inlet duct (150).

[0183] The air passes through the third passage (P3) and can be cooled by the cooling unit (530'). Accordingly, the third passage (P3) can be referred to as a cooling passage (P3).

[0184] The heating unit (540') can be placed on the fourth passage (P4). Since the fourth passage (P4) is formed on the downstream side of the third passage (P3), the heating unit (540') can heat the air that has passed through the third passage (P3).

[0185] Air passes through the fourth passage (P4) and can be heated by the heating element (540'). Accordingly, the fourth passage (P4) can be referred to as a heating passage (P4).

[0186] The cooling unit (530') may include a plurality of cooling fins (532'). Each of the plurality of cooling fins (532') may extend along the direction in which the third flow path (P3) extends. The plurality of cooling fins (532') may be arranged in a direction intersecting the direction in which the third flow path (P3) extends. For example, the plurality of cooling fins (532') may extend in the vertical direction (Z direction) and may be arranged in the front-back direction (X direction). Through this configuration, the area cooled by the cooling unit (530') may be expanded. In other words, the cooling efficiency of the thermoelectric device (500') may be increased.

[0187] As the high temperature and high humidity air flowing along the third passage (P3) passes through the plurality of cooling fins (532'), the air can be cooled, and condensation can occur on the plurality of cooling fins (532'). The condensation occurring on the plurality of cooling fins (532') can fall down due to its own weight.

[0188] In addition, since the high temperature and high humidity air flowing along the third flow path (P3) flows downward, the condensate generated on the plurality of cooling fins (532') can be relatively easily removed from the plurality of cooling fins (532') by the air. Accordingly, the condensate can be collected more effectively.

[0189] The connecting duct (400') may include a storage portion (440') having a bottom surface (440a'). The storage portion (440') may be recessed into the bottom surface (400a') of the connecting duct (400') provided below the thermoelectric device (500'). The storage portion (440') may be provided to collect condensate falling from a plurality of cooling fins (532').

[0190] The heating unit (540') may include a plurality of heating fins (542'). The plurality of heating fins (542') may extend along the direction in which the fourth flow path (P4) extends. The plurality of heating fins (542') may be arranged in a direction intersecting the direction in which the fourth flow path (P4) extends. For example, the plurality of heating fins (542') may extend in the vertical direction (Z direction) and may be arranged in the front-back direction (X direction). Through this configuration, the area heated by the heating unit (540') may be expanded. In other words, the heating efficiency of the thermoelectric device (500') may be increased.

[0191] FIG. 15 is a control block diagram of a dishwasher according to one embodiment of the present disclosure.

[0192] Referring to FIG. 15, a dishwasher (1a) according to one embodiment of the present disclosure may include a control unit (1100), a user interface (1200), a communication unit (1300), and a temperature sensor (1400).

[0193] The control unit (1100) can be electrically connected to various components of the dishwasher (1a). The control unit (1100) can control various components of the dishwasher (1a).

[0194] The control unit (1100) may include at least one memory (1120) and at least one processor (1110) to perform the operations described above and the operations described below.

[0195] The memory (1120) may be provided to store data in the form of an algorithm and / or program for controlling the operation of components within the dishwasher (1a). The processor (1110) may be provided to perform the operations described above and the operations described below using the data stored in at least one memory (1120). The memory (1120) and the processor (1110) may each be implemented as separate chips. The processor (1110) may include one or more processor chips or one or more processing cores. The memory (1120) may include one or more memory chips or one or more memory blocks. In addition, the memory (1120) and the processor (1110) may also be implemented as a single chip.

[0196] The control unit (1100) processes user input received through the user interface (1200) and can control various components of the dishwasher (1a) based on the processed user input.

[0197] The control unit (1100) can control various components of the dishwasher (1a) to perform a cycle including a washing process (2200, 2300), a rinsing process (2400), a drying process (2500), a cooling process (2600), etc., which will be described later, according to user input entered through the user interface (1200).

[0198] The user interface (1200) can interact with the user.

[0199] The user interface (1200) can obtain user input. The user interface (1200) can display information about the dishwasher (1a). For example, the user interface (1200) can also provide visual and / or auditory feedback.

[0200] The user interface (1200) may include an input unit (1210).

[0201] The input unit (1210) can receive an operation command from a user. The input unit (1210) can provide an electrical output signal corresponding to the user input to the control unit (1100). The input unit (1210) can include various buttons and / or dials. The input unit (1210) can obtain various user inputs, such as a user input for turning the dishwasher (1a) on or off, a user input for selecting a washing course, a washing option, etc.

[0202] The user interface (1200) may include a display unit (1220).

[0203] The display unit (1220) can display information regarding the status and / or operation of the dishwasher (1a). The display unit (1220) can display information input by the user and / or information provided to the user. The display unit (1220) can display information related to the operation of the dishwasher (1a) in the form of at least one of an image or text. The display unit (1220) can receive a signal from the control unit (1100) and display information corresponding to the received signal. In addition, the display unit (1220) can display a graphical user interface (GUI) that enables control of the dishwasher (1a). That is, the display unit (1220) can display a user interface element (UI element) such as an icon.

[0204] The display unit (1220) may include various types of display panels. For example, the display may include a liquid crystal display panel (LCD panel), a light emitting diode panel (LED panel), an organic light emitting diode panel (OLED panel), or a micro LED panel. Additionally, the display may be implemented as a touch display.

[0205] A dishwasher (1a) may provide various washing cycles for washing dishes. For example, various washing cycles may be provided, such as an automatic cycle, a standard cycle, an intensive cycle, a rapid cycle, and / or a rinse-dry cycle. The number and / or types of operations included in each washing cycle may vary. Additionally, each washing cycle may include various changeable washing options (e.g., washing time, temperature, etc.). A user may select a washing cycle and change various washing options constituting the washing cycle using a user interface (1200). The dishwasher (1a) may operate according to the washing cycle and washing options set by the user input.

[0206] The communication unit (1300) can transmit data to an external device or receive data from an external device based on a control signal from the control unit (1100). For example, the communication unit (1300) can communicate with a server, a user terminal device, and / or other home appliances to transmit and receive various types of data.

[0207] The communication unit (1300) may support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between external devices (e.g., servers, user terminal devices, and / or home appliances), and the performance of communication through the established communication channel. According to one embodiment, the communication unit (1300) may include a wireless communication module (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module (e.g., a local area network (LAN) communication module, or a power line communication module). Among these communication modules, a corresponding communication module may communicate with an external electronic device through a first network (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network (e.g., a long-range communication network such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)). These different types of communication modules may be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips).

[0208] The communication unit (1300) can establish communication with a user terminal device through a server.

[0209] The communication unit (1300) may include a Wi-Fi module and may perform communication with an external server and / or user terminal device based on establishing communication with an access point (AP) in the home.

[0210] The sensor module (1400) can detect the environmental status of the dishwasher (1a) and generate an electric signal or data value corresponding to the detected status.

[0211] For example, the sensor module (1400) may include a wash water temperature sensor (1410) configured to detect the temperature of wash water, and a condensate level sensor (1420) configured to detect the level of condensate stored in the connection duct (400).

[0212] The control unit (1100) can control the circulation pump (71). The control unit (1100) can start or stop the circulation pump (71). Specifically, the control unit (1100) can control the circulation pump (71) based on user input obtained through the user interface (1200) and / or an external device. The control unit (1100) can control the on / off, operating time, rotation speed, etc. of the circulation pump (71).

[0213] The control unit (1100) can control the drain pump (72). The control unit (1100) can start or stop the drain pump (72). Specifically, the control unit (1100) can control the drain pump (72) based on user input obtained through the user interface (1200) and / or an external device. The control unit (1100) can control the on / off, operating time, rotation speed, etc. of the drain pump (72).

[0214] The control unit (1100) can control the first fan device (300). The control unit (1100) can operate or stop the first fan device (300). Specifically, the control unit (1100) can control the first fan device (300) based on user input obtained through the user interface (1200) and / or an external device. The control unit (1100) can control the on / off, operating time, rotation speed, etc. of the first fan device (300).

[0215] The control unit (1100) can control the thermoelectric device (500). The control unit (1100) can turn on or turn off the thermoelectric device (500). Specifically, the control unit (1100) can control the thermoelectric device (500) based on user input obtained through the user interface (1200) and / or an external device. The control unit (1100) can control the on / off, operating time, etc. of the thermoelectric device (500).

[0216] The control unit (1100) can control the condensate pump (600). The control unit (1100) can start or stop the condensate pump (600). Specifically, the control unit (1100) can control the condensate pump (600) based on user input obtained through the user interface (1200) and / or an external device. The control unit (1100) can control the on / off, operating time, etc. of the condensate pump (600).

[0217] The control unit (1100) can control the blower device (800). The control unit (1100) can start or stop the blower device (800). Specifically, the control unit (1100) can control the blower device (800) based on user input obtained through the user interface (1200) and / or an external device. The control unit (1100) can control the on / off of the blower device (800), the operating time, the rotation speed of the second fan device (not shown), etc.

[0218] The control unit (1100) can control the washing room heater (81), washing water heater (82), and tub opening / closing device (83) to be described later.

[0219] The dishwasher (1a) may include a washing chamber heater (81). The washing chamber heater (81) may be provided to heat the washing chamber (C) to more efficiently wash dishes stored in the washing chamber (C).

[0220] The dishwasher (1a) may include a wash water heater (82). The wash water heater (82) may be provided to heat wash water to more efficiently wash dishes stored in the wash room (C). For example, the wash water heater (82) may be provided in the circulation pump (71). That is, while the circulation pump (71) is operating, the wash water heater (82) may heat water pumped by the circulation pump (71). However, the location of the wash water heater (82) is not limited thereto.

[0221] The dishwasher (1a) may include a tub opening / closing device (83). The tub opening / closing device (83) may be configured to open / close the opening (12a) of the tub (12) by rotating the door (11). For example, when the control unit (1100) performs the drying process (2500) described below, the control unit (1100) may open the opening (12a) of the tub (12) through the tub opening / closing device (83) in order to more efficiently dry the washing room (C).

[0222] The control unit (1100) can control the washing room heater (81). The control unit (1100) can turn on or off the washing room heater (81). Specifically, the control unit (1100) can control the washing room heater (81) based on user input obtained through the user interface (1200) and / or an external device. The control unit (1100) can control the on / off, operating time, heating temperature, etc. of the washing room heater (81).

[0223] The control unit (1100) can control the washing water heater (82). The control unit (1100) can start or stop the washing water heater (82). Specifically, the control unit (1100) can control the washing water heater (82) based on user input obtained through the user interface (1200) and / or an external device. The control unit (1100) can control the on / off, operating time, heating temperature, etc. of the washing water heater (82).

[0224] The control unit (1100) can control the tub opening / closing device (83). The control unit (1100) can operate or stop the tub opening / closing device (83). Specifically, the control unit (1100) can control the tub opening / closing device (83) based on user input obtained through the user interface (1200) and / or an external device. The control unit (1100) can control the on / off of the tub opening / closing device (83), the opening time of the tub (12), etc.

[0225] Fig. 16 is a flowchart illustrating a control method for a dishwasher according to one embodiment of the present disclosure. Fig. 17 is a flowchart illustrating a control method for a drying process according to one embodiment of the present disclosure.

[0226] Referring to FIGS. 16 and 17, a control method (2000) of a dishwasher (1a) according to one embodiment of the present disclosure will be described.

[0227] A user can select a washing course and / or washing option through an input unit (1210) of a user interface (1200), and a processor (1110) can retrieve a command or data corresponding to the user input (2100).

[0228] Washing courses may include various courses such as automatic course, standard course, strong course, glass course, rapid course, rinse-dry course or internal wash course.

[0229] Depending on the type of washing course, the washing sequence, water consumption, washing temperature, and / or washing time may vary.

[0230] For example, when an automatic course is selected, the control unit (1100) can perform an operation appropriate to the degree of dish contamination determined through the sensor module (1400).

[0231] For example, when the standard course is selected, the control unit (1100) can perform only the main washing process (2300) and the rinsing process (2400) without the preliminary washing process (2200) described later.

[0232] For example, when a strong course is selected, the control unit (1100) can perform all of the pre-washing cycle (2200), the main washing cycle (2300), and the rinsing cycle (2400).

[0233] According to the concept of the present disclosure, the operating time or heating temperature of the washing room heater (81) that heats the washing room (C) or the washing water heater (82) that heats the washing water may be different depending on the type of washing course. In other words, the washing room (C) may be heated to different temperatures depending on the type of washing course.

[0234] For example, if the Power course is selected, the washing chamber (C) can be heated to a relatively high temperature. Therefore, power consumption may increase, but dishwashing performance may be improved.

[0235] For example, when the automatic or standard course is selected, the washing chamber (C) may be heated to a relatively low temperature. Therefore, while dishwashing performance may be somewhat reduced, power consumption may be reduced.

[0236] Wash options may mean options to add another cycle to the selected wash course or to change some of the settings of the selected wash course.

[0237] For example, the washing options may include an option for adding a drying process to a selected washing course (hereinafter referred to as a “hot air drying option”), an option for improving drying performance by increasing the temperature of the rinse water without adding a drying process to a selected washing course (hereinafter referred to as a “drying improvement option”), etc.

[0238] For example, in the standard course, assuming that the rinse water temperature in the rinse cycle is set to 55°C, if the drying enhancement option is added in addition to the standard course, the rinse water temperature may be changed to 80°C. In addition, if the hot air drying option is added in addition to the standard course, a cooling cycle (2600) may be added after the rinse cycle (2400).

[0239] The control unit (1100) can perform operations corresponding to the selected washing course and washing option.

[0240] In FIGS. 16 and 17, for convenience of explanation, the operations that the control unit (1100) can perform are illustrated in their entirety, but it is to be understood that some operations may be omitted or some operations may be added depending on the washing course and washing options.

[0241] First, the control unit (1100) can perform a condensate discharge operation (3000) via the condensate pump (600) (3000). Specifically, the control unit (1100) can discharge the condensate collected in the storage unit (440) from the storage unit (440) via the condensate pump (600) (3000). In other words, the control unit (1100) can discharge the condensate collected in the storage unit (440) to the outside of the connecting duct (400) via the condensate pump (600) (3000).

[0242] That is, the control unit (1100) can perform a condensate discharge operation (3000) before starting the pre-washing operation (2200), main washing operation (2300), rinsing operation (2400), drying operation (2500), and cooling operation (2600) described later.

[0243] According to the concept of the present disclosure, after a cleaning cycle is performed once, condensate generated in the cooling section (530) of the thermoelectric device (500) can be collected in the storage section (440). If the cleaning cycle is performed again without discharging the condensate collected in the storage section (440), some components of the thermoelectric device (500) may be submerged under the condensate as the condensate level rises. Since the thermoelectric device (500) includes a thermoelectric element (510) that is vulnerable to moisture, if some components of the thermoelectric device (500) are submerged under the condensate, the thermoelectric device (500) may malfunction.

[0244] According to the concept of the present disclosure, the control unit (1100) can prevent the condensate from exceeding a predetermined level because it pumps the condensate through the condensate pump (600) and then performs other operations. Accordingly, the failure of the thermoelectric device (500) can be prevented.

[0245] However, the order of the condensate discharge operation (3000) is not limited thereto. When the control unit (1100) performs the drying process (2500), since condensate is generated in the cooling unit (530) of the thermoelectric device (500), if the condensate discharge operation (3000) is performed before the control unit (1100) performs the drying process (2500), the condensate can be prevented from exceeding a predetermined level. For example, the condensate discharge operation (3000) may be performed between the pre-washing process (2200) and the main washing process (2300). For example, the condensate discharge operation (3000) may be performed between the main washing process (2300) and the rinsing process (2400). For example, the condensate discharge operation (3000) may be performed between the rinsing process (2400) and the drying process (2500). For example, the condensate discharge operation (3000) may be included within the drying process (2500). For convenience of explanation, only an embodiment in which the condensate discharge operation (3000) is performed before the pre-washing process (2200) described below will be described below.

[0246] The control unit (1100) may perform a pre-washing operation (2200) after performing a condensate discharge operation (3000). The pre-washing operation (2200) is a operation to remove relatively large contaminants present on dishes by spraying washing water without detergent mixed into the washing chamber (C) before the main washing operation (2300).

[0247] The control unit (1100) can perform a preliminary washing process (2200) and then perform a main washing process (2300). The main washing process (2300) is a process of heating the washing room (C) and spraying washing water into the washing room (C) to wash dishes stored in the washing room (C) using washing water.

[0248] The main washing process (2300) may include a washing water supply process that supplies washing water used for washing to a sump assembly (70), a washing water spray process that sprays washing water mixed with detergent into a washing room (C) through a spray device (40), and a washing water drain process that drains washing water stored in the sump assembly (70) and / or the spray device (40).

[0249] As described above, the washing room (C) can be heated to different temperatures depending on the type of washing course. Specifically, the control unit (1100) can perform a plurality of main washing operations (2300) that heat the washing room (C) to different temperatures, and the main washing operations (2300) performed by the control unit (1100) can vary depending on the type of washing course.

[0250] The control unit (1100) can perform a rinsing process (2400) after performing the main washing process (2300).

[0251] The rinsing cycle (2400) may include a rinsing water supply cycle that supplies rinsing water used for rinsing to the sump assembly (70), a rinsing water injection cycle that sprays rinsing water stored in the sump assembly (70) through the injection device (40), and a rinsing water drain cycle that drains rinsing water stored in the sump assembly (70) and / or the injection device (40).

[0252] The control unit (1100) can perform a drying process (2500) after performing a rinsing process (2400). The drying process (2500) is a process for drying dishes by circulating air inside the washing room (C) and supplying hot air into the washing room (C) using the first fan device (300), the thermoelectric device (500), and the blower device (800).

[0253] Below, we will look at the drying process (2500) in more detail.

[0254] First, the control unit (1100) can wait for moisture within the washing room (C) to evaporate. That is, the control unit (1100) can wait for the air within the washing room (C) to become saturated vapor. At this time, the control unit (1100) can operate the washing room heater (81) so that moisture within the washing room (C) evaporates more efficiently.

[0255] Based on the control unit (1100) having waited for a predetermined waiting time (2510), the control unit (1100) may operate the first fan device (300) and the blower device (800) to form an airflow inside the washing room (C) (2521, 2522). At this time, based on the control unit (1100) having performed the main washing process (2300) for heating the washing room (C) below a predetermined reference temperature (2520), the control unit (1100) may additionally operate the thermoelectric device (500) (2521). Conversely, if the control unit (1100) has performed the main washing process (2300) for heating the washing room (C) above a predetermined reference temperature (2520), the control unit (1100) may not operate the thermoelectric device (500) (2522).

[0256] The thermoelectric element (510) of the thermoelectric device (500) has a heat-absorbing surface (511) and a heat-generating surface (512), and the temperature of each of the heat-absorbing surface (511) and the heat-generating surface (512) can be changed according to the temperature around the thermoelectric element (510). For example, when the temperature around the thermoelectric element (510) is 40°C, the heat-absorbing surface (511) can have a temperature lower than 40°C, and the heat-generating surface (512) can have a temperature higher than 40°C.

[0257] Due to the characteristics of the thermoelectric element (510) as described above, if the temperature around the thermoelectric element (510) becomes excessively high, the temperature of the heating surface (512) may rise even higher. This may lead to overheating of the thermoelectric element (510) and damage to the thermoelectric element (510).

[0258] Accordingly, when the control unit (1100) performs the main washing process (2300) that heats the washing room (C) to a temperature exceeding a set reference temperature, if the control unit (1100) operates the thermoelectric device (500), the ambient temperature of the thermoelectric element (510) may become excessively high, causing damage to the thermoelectric element (510).

[0259] According to the idea of ​​the present disclosure, based on the control unit (1100) performing the main washing process (2300) of heating the washing room (C) to a temperature below a set reference temperature (2520), the control unit (1100) can prevent damage to the thermoelectric element (510) by operating the thermoelectric device (500) (2521).

[0260] Below, we first examine the case (2520) in which the control unit (1100) performs the main washing process (2300) of heating the washing room (C) below a set reference temperature.

[0261] When the control unit (1100) performs the main washing process (2300) of heating the washing room (C) to a temperature below a predetermined reference temperature (2520), the control unit (1100) can operate the first fan device (300), the thermoelectric device (500), and the blower device (800) (2521). Accordingly, an air current is formed inside the washing room (C), and as the air inside the washing room (C) repeatedly passes through the cooling unit (530) and the heating unit (540) of the thermoelectric device (500), moisture inside the washing room (C) can be gradually removed.

[0262] After the control unit (1100) operates the first fan device (300), the thermoelectric device (500), and the blower device (800), when a predetermined operating time has elapsed (2531), the control unit (1100) can stop the operation of the first fan device (300) and the thermoelectric device (500) (2541).

[0263] After the operation of the first fan device (300), the thermoelectric device (500), and the blower device (800) is stopped, the control unit (1100) can open the tub (12) by rotating the door (11) via the tub opening / closing device (83) (2551). The blower device (800) can form an air current so that air can flow between the inside and outside of the washing room (C). Accordingly, moisture within the washing room (C) can be removed more efficiently.

[0264] After the control unit (1100) opens the tub (12) through the tub opening / closing device (83), and based on the elapse of a predetermined opening time (2561), the control unit (1100) can rotate the door (11) through the tub opening / closing device (83) to close the tub (12) again (2571). Accordingly, the drying process (2500) can be terminated.

[0265] Below, we will look at a case (2520) where the control unit (1100) performs the main washing process (2300) that heats the washing room (C) to exceed a set reference temperature.

[0266] When the control unit (1100) performs the main washing process (2300) that heats the washing room (C) to exceed a set reference temperature (2520), the control unit (1100) operates the first fan device (300) and the blower device (800) and opens the tub (12) through the tub opening / closing device (83), thereby forming an air current so that air can flow between the inside and outside of the washing room (C) (2522).

[0267] At this time, the control unit (1100) may not operate the thermoelectric device (500). That is, when the control unit (1100) performs the main washing process (2300) that heats the washing room (C) to exceed a set reference temperature (2520), moisture in the washing room (C) can be removed only by the air current formed by the first fan device (300) and the blower device (800).

[0268] The control unit (1100) operates the first fan device (300) and the blower device (800) and opens the tub (12) through the tub opening / closing device (83). Then, based on the elapse of a predetermined operating and opening time (2532), the control unit (1100) stops the operation of the first fan device (300) and the blower device (800) and closes the tub (12) again through the tub opening / closing device (83) (2542). Accordingly, the drying process (2500) can be terminated.

[0269] The dishwasher (1a) can perform a cooling process (2600) after performing a drying process (2500). The cooling process (2600) is a process for preventing safety accidents by lowering the temperature inside the washing room (C), and can be performed by a first fan device (300) and a blower device (800). The cooling process (2600) can also be defined as a part of the drying process (2500).

[0270] Meanwhile, if the condensate discharge operation (3000) is included in the drying process (2500), the control unit (1100) may operate the thermoelectric device (500) and perform the condensate discharge operation (3000) based on the fact that the control unit (1100) has performed the main washing process (2300) for heating the washing room (C) below a set reference temperature (2520). On the other hand, if the control unit (1100) has performed the main washing process (2300) for heating the washing room (C) above a set reference temperature (2520), the control unit (1100) may not operate the thermoelectric device (500) and may not perform the condensate discharge operation (3000).

[0271] FIG. 18 is a side cross-sectional view of a clothes dryer according to one embodiment of the present disclosure.

[0272] Hereinafter, a clothes dryer (1b) according to one embodiment of the present disclosure will be described with reference to FIG. 18. In describing the clothes dryer (1b), components that are substantially the same as those illustrated in FIGS. 1 to 17 are assigned the same reference numerals, and a detailed description thereof may be omitted.

[0273] Referring to FIG. 18, the clothes dryer (1b) may include a cabinet (4100) forming an exterior. The cabinet (4100) may also be referred to as a main body (4100).

[0274] The clothes dryer (1b) may include a drum (4200) that is rotatably installed within a cabinet (4100). The drum (4200) may be provided to be rotatably provided by receiving power from a driving device (4400).

[0275] The clothes dryer (1b) may include a receiving space (C'') formed by a drum (4200). The receiving space (C'') may be defined as an inner space of the drum (4200). That is, the receiving space (C'') may be formed on the inner side of the cabinet (4100).

[0276] The receiving space (C'') of the clothes dryer (1b) may be referred to as a clothes processing room (C''). The clothes processing room (C'') may mean a space where clothes are received and dried.

[0277] An inlet (4110) may be provided on the front of the cabinet (4100) for loading or unloading clothes (not shown) as a drying object into or from the clothes processing room (C''). The clothes dryer (1b) may include a door (4300) provided to open and close the inlet (4110).

[0278] The clothes dryer (1b) may include a duct (150'', 160'', 400''). The duct (150'', 160'', 400'') may be connected to a clothes treatment room (C''). The duct (150'', 160'', 400'') may be arranged to allow air within the clothes treatment room (C'') to be introduced or to discharge air to the clothes treatment room (C'').

[0279] The ducts (150'', 160'', 400'') may include an inlet duct (150'') for air to flow from the clothing treatment room (C''), an exhaust duct (160'') for exhausting air to the clothing treatment room (C''), and a connecting duct (400'') for connecting the inlet duct (150'') and the exhaust duct (160'').

[0280] The clothes dryer (1b) may include a fan device (300'') configured to form an air flow. The fan device (300'') may form an air flow to introduce air within the clothes treatment room (C'') into the duct (150'', 160'', 400'') or to discharge air within the duct (150'', 160'', 400'') into the clothes treatment room (C'').

[0281] The clothes dryer (1b) may include a thermoelectric device (500''). The thermoelectric device (500'') may be arranged to cool or heat the air within the duct (150'', 160'', 400'').

[0282] According to the concept of the present disclosure, the clothes dryer (1b) may include a thermoelectric device (500'') instead of a heat pump. Accordingly, components such as a compressor, condenser, expander, and evaporator may be omitted.

[0283] The thermoelectric device (500'') can be placed inside the duct (150'', 160'', 400''). Specifically, the thermoelectric device (500'') can be placed inside the connecting duct (400'').

[0284] A thermoelectric device (500'') may include a thermoelectric element (510''), a cooling unit (530'') configured to cool air introduced through an inlet duct (150''), and a heating unit (540'') configured to heat air that has passed through the cooling unit (530'').

[0285] Based on the direction of air flow into the duct (150'', 160'', 400''), the cooling unit (530'') may be provided upstream of the heating unit (540''). Through this configuration, air flowing into the duct (150'', 160'', 400'') from the clothing treatment room (C'') can be cooled by the cooling unit (530''), and the air cooled by passing through the cooling unit (530'') can be reheated by the heating unit (540'') and then discharged into the clothing treatment room (C''). In this process, the high temperature and high humidity air in the clothing treatment room (C'') can become high temperature and low humidity air, and condensation may occur in the cooling unit (530'').

[0286] The connecting duct (400'') may include a storage unit (440''). The storage unit (440'') may be provided to collect condensate generated in the cooling unit (530'').

[0287] The clothes dryer (1b) may include a condensate pump (600''). The condensate pump (600'') may be provided to discharge condensate generated inside the connection duct (400'') by the cooling unit (530'') to the outside of the connection duct (400''). Specifically, the condensate pump (600'') may be provided to discharge condensate collected in the storage unit (440'') from the storage unit (440''). For example, the condensate pump (600'') may discharge condensate to the outside of the clothes dryer (1b).

[0288] The clothes dryer (1b) may include a first connection hose (710'') connecting the condensate pump (600'') and the connection duct (400''), and a second connection hose (720'') connecting the condensate pump (600'') and the external space of the clothes dryer (1b). Through this configuration, the condensate collected in the storage unit (440'') may flow to the condensate pump (600'') through the first connection hose (710''), and then be discharged to the outside of the clothes dryer (1b) through the second connection hose (720'').

[0289] A dishwasher according to the invention comprises a tub for forming a washing room from which air can be discharged, an inlet duct, a connecting duct, an outlet duct, and a thermoelectric device located at a lower portion of the tub and inside the connecting duct, the thermoelectric device including a cooling unit configured to cool air and a heating unit configured to heat air. The inlet duct, the connecting duct, the outlet duct, and the thermoelectric device are configured such that air discharged from the washing room flows through the inlet duct to the connecting duct, the air is cooled by the cooling unit so that moisture is removed from the air in the connecting duct, the air cooled by the cooling unit is heated by the heating unit, and the air heated by the heating unit flows into the outlet duct to be discharged into the washing room.

[0290] The above connecting duct may include a first connecting duct joint connecting the connecting duct with the inlet duct, and a second connecting duct joint connecting the connecting duct with the outlet duct.

[0291] The dishwasher may further include an inlet sealing member that seals the connection between the first connecting duct joint and the inlet duct.

[0292] The dishwasher may further include a discharge sealing member that seals the connection between the second connecting duct joint and the discharge duct.

[0293] The first connecting duct joint and the second connecting duct joint may be positioned rearward from the center of the tub.

[0294] The above inlet duct and the above outlet duct may extend along the outer surface of the tub.

[0295] The above inlet duct and the above outlet duct can extend in the vertical direction.

[0296] The dishwasher may further include a sump assembly configured to supply wash water to the wash chamber. The thermoelectric device may be positioned behind the sump assembly.

[0297] The dishwasher may further include a base frame forming a machine room partitioned from the washing room. The connecting duct may be mounted on the rear side of the base frame within the machine room.

[0298] The thermoelectric device may include a thermoelectric element having one side in contact with the cooling unit and the other side in contact with the heating unit. The connecting duct may include a duct body in which the thermoelectric element is mounted, a first cover coupled to one side of the duct body to form a cooling path for air to flow into the connecting duct where the air is cooled by the cooling unit, and a second cover coupled to the other side of the duct body to form a heating path for air cooled by the cooling unit to be heated by the heating unit.

[0299] The above cooling path and the above heating path can be extended in the left and right directions.

[0300] The thermoelectric device may be operable to cool air by the cooling unit and heat air by the heating unit. The dishwasher may further include a control unit configured to operate the thermoelectric device while the washing chamber is at a temperature below a predetermined temperature and to stop the thermoelectric device while the washing chamber is at a temperature above the predetermined temperature.

[0301] The dishwasher may further include a water tank capable of storing wash water, and a water tank capable of supplying the wash water stored in the water tank to the washing room. The inlet duct and the outlet duct may be located in the water tank.

[0302] The dishwasher may further include a fan device mounted on the water tank, the fan device configured to discharge air within the tub from the tub to the inlet duct and flow through the inlet duct.

[0303] A device according to the invention comprises a main body, a receiving space formed inside the main body through which air can be discharged, an inlet duct, a connection duct, an exhaust duct, a thermoelectric device located in the lower portion of the receiving space and inside the connecting duct, the thermoelectric device including a cooling unit configured to cool air and a heating unit configured to heat air, and a control unit configured to operate the thermoelectric device while the receiving space has a temperature below a predetermined temperature and to stop the thermoelectric device while the receiving space has a temperature exceeding the predetermined temperature. The thermoelectric device is operable to cool air by the cooling unit and to heat air by the heating unit. The inlet duct, the connecting duct, the exhaust duct, and the thermoelectric device are configured such that air discharged from the receiving space flows through the inlet duct to the connecting duct, the air is cooled by the cooling unit so that moisture is removed from the air in the connecting duct, the air cooled by the cooling unit is heated by the heating unit, and the air heated by the heating unit flows to the exhaust duct so as to be discharged into the receiving space.

[0304] The above home appliance may further include an inlet sealing member for sealing a portion where the inlet duct and the connection duct are connected, and an exhaust sealing member for sealing a portion where the exhaust duct and the connection duct are connected.

[0305] The above inlet sealing member and the above outlet sealing member may be positioned rearward from the center in the front-rear direction of the main body.

[0306] The above home appliance may further include a base frame configured to form a machine room partitioned from the receiving space. The connecting duct may be mounted on the base frame within the machine room.

[0307] The thermoelectric device may include a thermoelectric element provided with the cooling unit and the heating unit. The connecting duct may include a duct body in which the thermoelectric element is mounted, a first cover coupled to one side of the duct body to form a cooling passage for cooling air flowing into the connecting duct through the cooling unit, and a second cover coupled to the other side of the duct body to form a heating passage for heating air passing through the cooling passage through the heating unit.

[0308] The above appliance may further include a sump assembly for supplying washing water to the receiving space. The thermoelectric device may be positioned behind the sump assembly.

[0309] According to the invention, dishwashers and home appliances can have improved energy efficiency by including thermoelectric devices.

[0310] According to the invention, dishwashers and home appliances can prevent air leakage through thermoelectric devices, thereby improving energy efficiency.

[0311] According to the invention of the present disclosure, dishwashers and home appliances can utilize space efficiently because the thermoelectric device is placed at the bottom of the receiving space.

[0312] According to the invention, dishwashers and home appliances can control thermoelectric devices based on the temperature within the receiving space, thereby reducing damage to the thermoelectric devices.

[0313] 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 from the description below.

[0314] 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 for forming a washing room from which air can be discharged; inlet duct; connecting duct; exhaust duct; and A thermoelectric device comprising a cooling unit configured to cool air and a heating unit configured to heat air, which is located at the bottom of the tub and inside the connecting duct; A dishwasher in which the inlet duct, the connection duct, the discharge duct, and the thermoelectric device are configured such that air discharged from the washing room flows through the inlet duct to the connection duct, the air is cooled by the cooling unit so that moisture is removed from the air in the connection duct, the air cooled by the cooling unit is heated by the heating unit, and the air heated by the heating unit flows to the discharge duct to be discharged into the washing room.

2. In paragraph 1, The above connecting duct, A first connecting duct joint connecting the above connecting duct with the above inlet duct; and A dishwasher comprising a second connecting duct joint connecting the connecting duct to the exhaust duct.

3. In paragraph 2, A dishwasher further comprising an inlet sealing member sealing the connection between the first connecting duct joint and the inlet duct.

4. In paragraph 2, A dishwasher further comprising a discharge sealing member sealing the connection between the second connecting duct joint and the discharge duct.

5. In paragraph 2, A dishwasher in which the first connecting duct joint and the second connecting duct joint are positioned rearward from the center of the tub.

6. In paragraph 1, A dishwasher wherein the inlet duct and the outlet duct extend along the outer surface of the tub.

7. In paragraph 1, The above inlet duct and the above outlet duct are dishwashers that extend in the vertical direction.

8. In paragraph 1, It further includes a sump assembly configured to supply washing water to the washing room; A dishwasher wherein the thermoelectric device is positioned rearward of the sump assembly.

9. In paragraph 1, Further comprising a base frame forming a machine room partitioned from the washing room; A dishwasher in which the above connecting duct is mounted on the rear side of the base frame within the above machine room.

10. In paragraph 1, The above thermoelectric device, It includes a thermoelectric element having one side in contact with the cooling unit and the other side in contact with the heating unit, The above connecting duct, A duct body in which the above thermoelectric element is mounted; A first cover coupled to one side of the duct body to form a cooling path for air to flow into the connecting duct through which air is cooled by the cooling unit; and A dishwasher comprising a second cover coupled to the other side of the duct body to form a heating path for air cooled by the cooling unit to be heated by the heating unit.

11. In paragraph 10, A dishwasher in which the cooling path and the heating path extend in the left and right directions.

12. In paragraph 1, The thermoelectric device is operable to cool air by the cooling unit and heat air by the heating unit, The dishwasher further comprises a control unit configured to operate the thermoelectric device while the washing room is below a predetermined temperature and to stop the thermoelectric device while the washing room is above the predetermined temperature.

13. In paragraph 1, A water tank capable of storing washing water, further comprising a water tank capable of supplying washing water stored in the water tank to the washing room; The above inlet duct and the above outlet duct are dishwashers in the water tank.

14. In paragraph 13, A dishwasher further comprising a fan device mounted on the water tank, the fan device configured to discharge air within the tub from the tub to the inlet duct and flow through the inlet duct.

15. Body; A receiving space formed inside the main body from which air can be discharged; inlet duct; connecting duct; exhaust duct; A thermoelectric device located at the lower part of the above-mentioned receiving space and inside the above-mentioned connecting duct, the thermoelectric device including a cooling unit configured to cool air and a heating unit configured to heat air; and A control unit configured to operate the thermoelectric device while the receiving space has a temperature below a predetermined temperature and to stop the thermoelectric device while the receiving space has a temperature exceeding the predetermined temperature; The thermoelectric device is operable to cool air by the cooling unit and heat air by the heating unit, The above inlet duct, the connection duct, the discharge duct, and the thermoelectric device are configured such that air discharged from the receiving space flows through the inlet duct to the connection duct, the air is cooled by the cooling unit so that moisture is removed from the air in the connecting duct, the air cooled by the cooling unit is heated by the heating unit, and the air heated by the heating unit flows to the discharge duct to be discharged into the receiving space.

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