Dish washer and home appliance

Abstract

A dishwasher including a tub for forming a washing chamber from which air is dischargeable; an inlet duct; a connection duct; an outlet duct; and a thermoelectric device under the tub and inside the connection duct, the thermoelectric device including a cooling portion configured to cool air, and a heating portion configured to heat air. The inlet duct, the connection duct, the outlet duct, and the thermoelectric device are configured so that air discharged from the washing chamber flows through the inlet duct to the connection duct where the air is cooled by the cooling portion so that moisture is removed from the air and then the air cooled by the cooling portion is heated by the heating portion, and then the air heated by the heating portion flows into the outlet duct to be discharged into the washing chamber.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application is a continuation of International Application No. PCT / KR2025 / 009833, filed Jul. 8, 2025, and claims foreign priority to Korean Application No. 10-2024-0118614, filed Sep. 2, 2024, and Korean Application No. 10-2024-0158561, filed Nov. 8, 2024. International Application No. PCT / KR2025 / 009833, Korean Application No. 10-2024-0118614, and Korean Application No. 10-2024-0158561, are incorporated herein by reference in their entireties.TECHNICAL FIELD

[0002] The present disclosure relates to a dishwasher and a home appliance having a drying function.BACKGROUND ART

[0003] Home appliances are a general term for electrical appliances and machines used in the home, and may include washing machines, dryers, refrigerators, dishwashers, televisions, and the like. The home appliance may have a variety of functions.

[0004] For example, the home appliance may have a drying function. For example, a dishwasher may include a configuration for drying dishes, and a dryer may include a configuration for drying clothes. A washing machine may also include a configuration for drying clothes that have been washed.

[0005] The home appliance having 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, and the like.

[0006] The thermoelectric device may be a device that uses Peltier effect, which absorbs or generates heat by an electric current. For example, when two types of metals are connected and when an electric current passes therethrough, one terminal may absorb heat and the other terminal may generate heat, depending on a direction of the electric current.DISCLOSURETechnical Problem

[0007] The present disclosure is directed to providing a dishwasher and a home appliance having improved energy efficiency.

[0008] Further, the present disclosure is directed to providing a dishwasher and a home appliance capable of utilizing a space efficiently.

[0009] Further, the present disclosure is directed to providing a dishwasher and a home appliance capable of reducing damages to a thermoelectric device.

[0010] Additional aspects of the disclosure will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the disclosure.Technical Solution

[0011] One aspect of the present disclosure provides a dishwasher including: a tub for forming a washing chamber from which air is dischargeable; an inlet duct; a connection duct; an outlet duct; and a thermoelectric device under the tub and inside the connection duct, the thermoelectric device including a cooling portion configured to cool air, and a heating portion configured to heat air; wherein the inlet duct, the connection duct, the outlet duct, and the thermoelectric device are configured so that air discharged from the washing chamber flows through the inlet duct to the connection duct where the air is cooled by the cooling portion so that moisture is removed from the air and then the air cooled by the cooling portion is heated by the heating portion, and then the air heated by the heating portion flows into the outlet duct to be discharged into the washing chamber.

[0012] Another aspect of the present disclosure provides an appliance including: a main body; a receiving space formed inside the main body from which air is dischargeable; an inlet duct; a connection duct, an outlet duct; a thermoelectric device under the receiving space and inside the connection duct, the thermoelectric device including a cooling portion configured to cool air, and a heating portion configured to heat air, wherein the thermoelectric device is operable to cause air to be cooled by the cooling portion and air to be heated by the heating portion, and the inlet duct, the connection duct, the outlet duct, and the thermoelectric device are configured so that air discharged from the receiving space flows through the inlet duct to the connection duct where the air is cooled by the cooling portion so that moisture is removed from the air and then the air cooled by the cooling portion is heated by the heating portion, and then the air heated by the heating portion flows into the outlet duct to be discharged into the receiving space; and a controller configured to operate the thermoelectric device while the receiving space is at a predetermined temperature or less, and stop operating the thermoelectric device if the receiving space is at a temperature exceeding the predetermined temperature.DESCRIPTION OF DRAWINGS

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

[0014] FIG. 2 illustrates a cross-section of the dishwasher according to one embodiment of the present disclosure.

[0015] FIG. 3 illustrates a tub and some components around the tub inside the dishwasher according to one embodiment of the present disclosure.

[0016] FIG. 4 illustrates the tub and some components around the tub inside the dishwasher according to one embodiment of the present disclosure when viewed from a direction different from that illustrated in FIG. 3.

[0017] FIG. 5 illustrates components for supplying dry air to the tub of the dishwasher according to one embodiment of the present disclosure.

[0018] FIG. 6 illustrates an exploded view of the components for supplying dry air to the tub of the dishwasher according to one embodiment of the present disclosure.

[0019] FIG. 7 is a cross-sectional view of some of the components for supplying dry air to the tub of the dishwasher according to one embodiment of the present disclosure.

[0020] FIG. 8 illustrates an inside of a water tank of the dishwasher according to one embodiment of the present disclosure, and its surrounding components.

[0021] FIG. 9 illustrates a portion of a cross-section taken along line A-A′ shown in FIG. 5.

[0022] FIG. 10 illustrates a portion of a cross-section taken along line B-B′ shown in FIG. 5.

[0023] FIG. 11 is a cross-sectional perspective view illustrating internal components of a connection duct of the dishwasher according to one embodiment of the present disclosure.

[0024] FIG. 12 is a cross-sectional side view illustrating the internal components of the connection duct of the dishwasher according to one embodiment of the present disclosure.

[0025] FIG. 13 is a cross-sectional perspective view illustrating internal components of a connection duct according to one embodiment of the present disclosure.

[0026] FIG. 14 is a cross-sectional side view illustrating the internal components of the connection duct according to one embodiment of the present disclosure.

[0027] FIG. 15 is a control block diagram of the dishwasher according to one embodiment of the present disclosure.

[0028] FIG. 16 is a flowchart illustrating a method for controlling the dishwasher according to one embodiment of the present disclosure.

[0029] FIG. 17 is a flowchart illustrating a method for controlling a drying process according to one embodiment of the present disclosure.

[0030] FIG. 18 is a cross-sectional side view of a clothes dryer according to one embodiment of the present disclosure.MODES OF THE INVENTION

[0031] Various embodiments and the terms used therein are not intended to limit the technology disclosed herein to specific forms, and the disclosure should be understood to include various modifications, equivalents, and / or alternatives to the corresponding embodiments.

[0032] In describing the drawings, similar reference numerals may be used to designate similar constituent elements.

[0033] A singular expression may include a plural expression unless otherwise indicated herein or clearly contradicted by context.

[0034] The expressions “A or B,”“at least one of A or / and B,” or “one or more of A or / and B,” A, B or C,”“at least one of A, B or / and C,” or “one or more of A, B or / and C,” and the like used herein may include any and all combinations of one or more of the associated listed items.

[0035] The term of “and / or” includes a plurality of combinations of relevant items or any one item among a plurality of relevant items.

[0036] Herein, the expressions “a first”, “a second”, “the first”, “the second”, etc., may simply be used to distinguish an element from other elements, but is not limited to another aspect (importance or order) of elements.

[0037] When an element (e.g., a first element) is referred to as being “(functionally or communicatively) coupled,” or “connected” to another element (e.g., a second element), the first element may be connected to the second element, directly (e.g., wired), wirelessly, or through a third element.

[0038] In this disclosure, the terms “including”, “having”, and the like are used to specify features, numbers, steps, operations, elements, components, or combinations thereof, but do not preclude the presence or addition of one or more of the features, numbers, steps, operations, elements, components, or combinations thereof.

[0039] When an element is said to be “connected”, “coupled”, “supported” or “contacted” with another element, this includes not only when elements are directly connected, coupled, supported or contacted, but also when elements are indirectly connected, coupled, supported or contacted through a third element.

[0040] Throughout the description, when an element is “on” another element, this includes not only when the element is in contact with the other element, but also when there is another element between the two elements.

[0041] The terms “unit”, “module”, and “member” may be implemented in hardware or software. Depending on embodiments, a plurality of “units”, “modules”, and “members” may be implemented as a single component, or a single “unit”, “module”, or “member” may include a plurality of components.

[0042] In the following description, terms such as “unit”, “part”, “block”, “member”, and “module” indicate a unit for processing at least one function or operation. For example, those terms may refer to at least one process processed by at least one hardware such as Field Programmable Gate Array (FPGA), Application Specific Integrated Circuit (ASIC), at least one software stored in a memory or a processor.

[0043] An identification code is used for the convenience of the description but is not intended to illustrate the order of each step. Each step may be implemented in the order different from the illustrated order unless the context clearly indicates otherwise.

[0044] The terms “front”, “rear”, “left”, “right”, “upper”, “lower”, etc. used in the following description are defined based on the drawings, but the shape and position of each component are not limited by the above terms. For example, the front side may be defined as the +X side, and the rear side may be defined as the −X side. For example, based on the drawing, the right side may be defined as the +Y side, and the left side may be defined as the −Y side. For example, based on the drawing, the upper side may be defined as the +Z side, and the lower side may be defined as the −Z side.

[0045] Reference will now be made in detail to embodiments of the disclosure, examples of which are illustrated in the accompanying drawings.

[0046] 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, etc. In FIGS. 1 to 17, an example 1a of a dishwasher may be described. In FIG. 18, an example 1b of a clothes dryer may be described. However, the present disclosure is not limited thereto. For example, when a home appliance includes a receiving space formed inside a main body and a configuration for supplying dry air to the receiving space, the home appliance may be included in the home appliance 1 according to the present disclosure.

[0047] 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.

[0048] Referring to FIGS. 1 and 2, the dishwasher 1a may include a main body 10. The main body 10 may form an exterior of the dishwasher 1a.

[0049] The dishwasher 1a may include a tub 12 arranged inside the main body 10. The tub 12 may be formed in a substantially box shape.

[0050] One side of the tub 12 may be opened. The tub 12 may include an opening 12a. The opening 12a may be formed at the front of the tub 12.

[0051] The dishwasher 1a may include a receiving space C formed by the 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.

[0052] The receiving space C of the dishwasher 1a may be referred to as a washing chamber C. The washing chamber C may mean a space where dishes placed in a storage container are washed and dried.

[0053] The dishwasher 1a may include a door 11 configured to open and close the opening 12a of the tub 12. The door 11 may be installed in the main body 10 to open and close the opening 12a of the tub 12. The door 11 may be removably mounted to the main body 10. The door 11 may be rotatably mounted to the main body 10. For example, the door 11 may be rotatably coupled to the main body 10 via a hinge 15.

[0054] For example, an upper portion of the door 11 may be provided to be rotatable relative to the tub 12 with respect to a lower portion of the door 11. The lower portion 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, the opening 12a may be opened from an upper side of the opening 12a. For example, during a drying process, as illustrated in FIG. 2, the door 11 may be configured to open the opening 12a of the tub 12 to a predetermined range.

[0055] The dishwasher 1a may include a storage container arranged in the tub 12 to store dishes.

[0056] The storage container may include a plurality of baskets 51, 52, and 53. The plurality of baskets 51, 52, and 53 may be provided to store various dishes. However, the present disclosure is not limited thereto, and the storage container may include a single basket.

[0057] The storage container may include an intermediate basket 52 positioned in a middle portion in a height direction (Z direction) of the dishwasher 1a. The intermediate basket 52 may be inserted into or withdrawn from the washing chamber 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 configured to be slidably moved along the intermediate guide rack 13b. For example, the intermediate guide rack 13b may be installed on an inner surface of the tub 12.

[0058] The storage container may include a lower basket 51 positioned in a lower portion in the height direction (Z direction) of the dishwasher 1a. The lower basket 51 may be inserted into or withdrawn from the washing chamber 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 configured to be slidably moved along the lower guide rack 13a. For example, the lower guide rack 13a may be installed on the inner surface of the tub 12.

[0059] Relatively large dishes may be stored in the plurality of baskets 51 and 52. However, the types of dishes stored in the plurality of baskets 51 and 52 are not limited to relatively large dishes. That is, the plurality of baskets 51 and 52 may store not only relatively large dishes but also relatively small dishes.

[0060] The storage container may include an upper basket 53 positioned in an upper portion in the height direction (Z direction) of the dishwasher 1a. The upper basket 53 may be formed in a rack assembly to store relatively small dishes. For example, the upper basket 53 may store a cooking utensil such as a ladle, a knife, or a turner, or cutlery. In addition, the upper basket 53 may store a small cup such as an espresso cup. However, the types of dishes stored in the upper basket 53 is not limited thereto

[0061] The upper basket 53 may be inserted into or withdrawn from the washing chamber C through the opening 12a of the tub 12. The upper basket 53 may be provided to be supported on an upper guide rack 13c. For example, the upper basket 53 may be configured to be slidably moved along the upper guide rack 13c. For example, the upper guide rack 13c may be installed on the inner surface of the tub 12.

[0062] The dishwasher 1a may include a spray device 40 configured to spray washing water. The spray device 40 may spray washing water into the washing chamber C. The spray device 40 may spray washing water toward dishes stored in the storage container. The spray device 40 may receive washing water from a sump assembly 70 to be described later.

[0063] The spray device 40 may include at least one spray unit. For example, the spray device 40 may include a plurality of spray units 41, 42, and 43.

[0064] For example, the spray device 40 may include a first spray unit 41 disposed under 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 under the intermediate basket 52 in the height direction (Z direction) of the dishwasher 1a. The spray device 40 may include a third spray unit 43 disposed above the upper basket 53 in the height direction (Z direction) of the dishwasher 1a. However, the present disclosure is not limited thereto, and the spray device may include two or less or four or more spray units.

[0065] Each of the plurality of spray units 41, 42, and 43 may be configured to spray 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 configured to spray washing water while rotating. The plurality of spray units 41, 42, and 43 may be referred to as a plurality of spray rotors 41, 42, and 43. The first spray unit 41, the second spray unit 42, and the third spray unit 43, respectively, may be referred to as a first spray rotor 41, a second spray rotor 42, and a third spray rotor 43.

[0066] However, the spray device 40 may spray the washing water in a manner different from the above-described example. For example, unlike the second spray unit 42 and the third spray unit 43, the first spray unit 41 may be fixed to one side of a lower surface 12d of the tub 12. The first spray unit 41 may be configured to spray washing water in a substantially horizontal direction by a fixed nozzle. A direction of the washing water, which is sprayed in a substantially horizontal direction from the nozzle of the first spray unit 41, may be changed by a conversion assembly (not shown) arranged in the washing chamber C and then the washing water may move upward. The conversion assembly may be installed on a rail (not shown) and may be configured to be movable in translation 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 configured to spray the washing water using a fixed nozzle, similar to the above-described example.

[0067] The dishwasher 1a may include an auxiliary spray device 30. The auxiliary spray device 30 may be arranged in a lower portion of the washing chamber C to spray washing water to a portion of the washing chamber C. The auxiliary spray device 30 may be designed to spray water at a relatively high pressure compared to the spray device 40, so as to intensively wash heavily contaminated dishes. The auxiliary spray device 30 may be configured to spray washing water while rotating. The auxiliary spray device 30 may be referred to as an auxiliary spray unit 30. In addition, the auxiliary spray device 30 may be referred to as an auxiliary spray rotor 30.

[0068] The auxiliary spray device 30 may be provided as a component of the spray device 40. Hereinafter the plurality of spray units may be a concept including at least two of the first spray unit 41, the second spray unit 42, the third spray unit 43, or the auxiliary spray unit 30. Hereinafter the plurality of spray rotors may be a concept including at least two of the first spray rotor 41, the second spray rotor 42, the third spray rotor 43, or the auxiliary spray rotor 30.

[0069] The dishwasher 1a may optionally be equipped with the auxiliary spray device 30. That is, the auxiliary spray device 30 may be omitted in the dishwasher 1a.

[0070] The dishwasher 1a may include the sump assembly 70. The sump assembly 70 may be referred to as a sump 70.

[0071] The sump assembly 70 may be provided to store washing water. The sump assembly 70 may collect washing water of the washing chamber C. For example, the lower surface 12d of the tub 12 may be inclined downward toward the sump assembly 70 to smoothly collect water to the sump assembly 70. The washing water of the washing chamber C may flow along a slope of the lower surface 12d of the tub 12 and smoothly flow into the sump assembly 70.

[0072] The dishwasher 1a may include a circulation pump 71 configured to pump washing 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 disposed in a machine room L.

[0073] The dishwasher 1a may include a drain pump 72 configured to drain washing 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 disposed in the machine room L.

[0074] The sump assembly 70 may be configured to supply washing water to at least one of the plurality of spray units 41, 42, 43, and 30. The sump assembly 70 may be configured to selectively supply washing water to the plurality of spray units 41, 42, 43, and 30.

[0075] The dishwasher 1a may include a pipe 14. The pipe 14 may be configured to guide washing water from the sump assembly 70 to the spray device 40. The pipe 14 may include a shape extending substantially in the height direction (Z direction).

[0076] The dishwasher 1a may include the machine room L which is a space provided below the tub 12. The machine room L may be a place where components for circulating washing water is arranged. The dishwasher 1a may include abase frame 20 forming the machine room L. The machine room L may be partitioned from the washing chamber C.

[0077] At least a portion of the sump assembly 70 may be arranged in the machine room L. Most of the sump assembly 70 may be arranged in the machine room L. That is, as for an area of the sump assembly 70, an area of the sump assembly 70 located in the washing chamber C may be less than an area of the sump assembly 70 located in the machine room L. By reducing the area of the sump assembly 70 occupying the washing chamber C, an area of the washing chamber C may be secured. Accordingly, a capacity of the washing chamber C may be increased, and thus a storage capacity of the dishes may be improved.

[0078] The dishwasher 1a may include a filter 60. The filter 60 may be configured to filter out foreign substances contained in the washing water flowing into the sump assembly 70. The washing 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.

[0079] FIG. 3 illustrates a tub and some components around the tub inside the dishwasher according to one embodiment of the present disclosure. FIG. 4 illustrates the tub and some components around the tub inside the dishwasher according to one embodiment of the present disclosure when viewed from a direction different from that illustrated in FIG. 3. FIG. 5 illustrates components for supplying dry air to the tub of the dishwasher according to one embodiment of the present disclosure. FIG. 6 illustrates an exploded view of the components for supplying dry air to the tub of the dishwasher according to one embodiment of the present disclosure. FIG. 7 is a cross-sectional view of some of the components for supplying dry air to the tub of the dishwasher according to one embodiment of the present disclosure.

[0080] 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 chamber C.

[0081] The water tank 100 may be disposed on one side of the tub 12. Particularly, the water tank 100 may be disposed between one side wall 12b of the tub 12 and one side wall 10a of the main body 10.

[0082] The water tank 100 may be formed by coupling a first tank case 101 and a second tank case 102. For example, the first tank case 101 and the second tank case 102 may be heat-fused. By coupling the first tank case 101 and the second tank case 102, a storage space 110, an inlet duct 150, and an outlet duct 160 may be formed.

[0083] The dishwasher 1a may include ducts 150, 160, and 400. The ducts 150, 160, and 400 may be in communication with the washing chamber C. The ducts 150, 160, and 400 may be configured to receive air in the washing chamber C or to discharge air to the washing chamber C.

[0084] The ducts 150, 160, and 400 may include the inlet duct 150 for air discharged from the washing chamber C to flow, the outlet duct 160 for discharging air into the wash chamber C, and a connection duct 400 connecting the inlet duct 150 and the outlet duct 160.

[0085] The inlet duct 150 and the outlet duct 160 may each be disposed inside the water tank 100. That is, the inlet duct 150 and the outlet duct 160 may each be arranged between the side wall 12b of the tub 12 and the side wall 10a of the main body 10. The inlet duct 150 and the outlet duct 160 may extend along one outer surface of the tub 12. For example, the inlet duct 150 and the outlet duct 160 may extend in the up and down direction.

[0086] The water tank 100 may include a first air inlet 151 formed at one end of the inlet duct 150. The first air inlet 151 may allow the washing chamber C to communicate with the inlet duct 150. Air within the washing chamber C may be introduced into the inlet duct150 through the first air inlet 151.

[0087] The dishwasher 1a may include a first fan device 300 configured to form an air flow. The first fan device 300 may be arranged at a position corresponding to the first air inlet 151. The first fan device 300 may introduce air within the washing chamber C into the ducts 150, 160, and 400 or may form an air flow to discharge air in the ducts 150, 160, and 400 to the washing chamber C.

[0088] The water tank 100 may include a first air outlet 161 formed at one end of the outlet duct 160. The first air outlet 161 may allow the washing chamber C to communicate with the outlet duct 160. Air in the outlet duct 160 may be discharged to the washing chamber C through the first air outlet 161.

[0089] The connection duct 400 may be provided at the lower side of the water tank 100. The connection duct 400 may be disposed in the machine room L. The connection duct 400 may be mounted on the base frame 20. In the base frame 20, the connection duct 400 may be mounted at a rearward position relative to a portion on which the sump assembly 70 is mounted. The connection duct 400 may be mounted on a rear end of the base frame 20 inside the machine room L.

[0090] The connection duct 400 may be coupled to the water tank 100. With this configuration, the connection duct 400 may connect the inlet duct 150 and the outlet duct 160. A flow path through which air flowing from the inlet duct 150 flows toward the outlet duct 160 may be formed inside the connection duct 400.

[0091] The connection 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 a lower side of the duct body 410, and the second cover 430 may be coupled to an upper side of the duct body 410.

[0092] The dishwasher 1a may include a thermoelectric device 500. The thermoelectric device 500 may be configured to cool or heat the air within the ducts 150, 160, and 400.

[0093] The thermoelectric device 500 may be disposed inside the connection 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 connection 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 inside the connection duct 400.

[0094] The thermoelectric device 500 may include a thermoelectric element 510, an element sealing member 520, a cooling portion 530, and a heating portion 540 to be described later, and thus a space in which the thermoelectric device 500 is disposed needs to be relatively wide. When the thermoelectric device 500 is disposed in a narrow space, the assembling efficiency of the dishwasher 1a may be hindered, and the efficiency of the thermoelectric device 500 may also be reduced.

[0095] According to the present disclosure, the machine room L in which the connection duct 400 is arranged may form a relatively wide receiving space. In addition, a relatively wide space may also be provided within the connection duct 400 in which the thermoelectric device 500 is arranged. In other words, a sufficient space in which the thermoelectric device 500 is arranged may be formed within the connection duct 400.

[0096] That is, as the connection duct 400, which is a part of the ducts 150, 160, and 400, is arranged in the machine room L and the thermoelectric device 500 is arranged in the connection duct 400, both the assembling efficiency of the dishwasher 1a and the efficiency of the thermoelectric device 500 may be improved.

[0097] The thermoelectric device 500 may include the 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, etc. The thermoelectric element 510 may have a thin hexahedral shape. A substrate and an electrode, etc. may be provided inside the thermoelectric element 510.

[0098] The thermoelectric element 510 may be mounted on the duct body 410. Particularly, the duct body 410 may be provided with a thermoelectric element insertion portion 411 that is formed openly, and the thermoelectric element 510 may be mounted on the duct body 410 by being inserted into the thermoelectric element insertion portion 411.

[0099] The thermoelectric element 510 may include a heat-absorbing surface 511 and a heat-generating surface 512. When an electric current is applied to the thermoelectric element 510, heat absorption may occur at the heat-absorbing surface 511, and heat generation may occur at 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 a lower surface of the thermoelectric element 510, and the heat-generating surface 512 may be provided on an upper surface of the thermoelectric element 510.

[0100] 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.

[0101] 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 surface of the thermoelectric element 510. One end of the second wire 5132 may be coupled to the other end of one surface of the thermoelectric element 510. For example, the thermoelectric element 510 may include 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.

[0102] The thermoelectric device 500 may include the element sealing member 520. The element sealing member 520 may seal an outer surface of the thermoelectric element 510. In other words, the element sealing member 520 may seal a space between the thermoelectric element 510 and the duct body 410. With 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.

[0103] The thermoelectric device 500 may include the cooling portion 530 that comes into contact with the heat-absorbing surface 511 of the thermoelectric element 510. The cooling portion 530 may be disposed inside the connection duct 400. The cooling portion 530 may be configured to cool air within the connection duct 400. Particularly, the cooling portion 530 may absorb heat from the air within the connection duct 400 and transfer the absorbed heat to the thermoelectric element 510. As the cooling portion 530 cools the air within the connection duct 400, condensate water may be generated in the cooling portion 530.

[0104] The condensate water generated in the cooling portion 530 may be collected in the connection duct 400. Particularly, the condensate water generated in the cooling portion 530 may be collected in a storage portion 440 of the connection duct 400.

[0105] The cooling portion 530 may be disposed on one side of the thermoelectric element 510. For example, the cooling portion 530 may be disposed under the thermoelectric element 510. That is, the cooling portion 530 may be disposed between the duct body 410 and the first cover 420.

[0106] The thermoelectric device 500 may include the heating portion 540 that comes into contact with the heat-generating surface 512 of the thermoelectric element 510. The heating portion 540 may be provided inside the connection duct 400. The heating portion 540 may be configured to heat air within the connection duct 400. Particularly, the heating portion 540 may receive heat from the thermoelectric element 510 and emit the received heat to the air within the connection duct 400.

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

[0108] The dishwasher 1a may include a condensate pump 600. The condensate pump 600 may be configured to discharge condensate water, which is generated inside the connection duct 400 by the cooling portion 530, to the outside of the connection duct 400.

[0109] The connection duct 400 is disposed in the machine room L provided at the lower portion of the dishwasher 1a and thus it may be structurally difficult to discharge the condensate water to the outside of the connection duct 400 using only the condensate's own weight.

[0110] According to the present disclosure, because the dishwasher 1a includes the condensate pump 600, condensate water within the connection duct 400 may be easily discharged to the outside of the connection duct 400.

[0111] The dishwasher 1a may include a first connecting hose 710 connecting the condensate pump 600 and the connection duct 400. As the condensate pump 600 operates, condensate water in the connection duct 400 may flow to the condensate pump 600 through the first connecting hose 710.

[0112] The dishwasher 1a may include a second connecting hose 720 connecting the condensate pump 600 and the water tank 100. The condensate water pumped by the condensate pump 600 may flow to the water tank 100 through the second connecting hose 720.

[0113] 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 flow within the washing chamber C. The blower 800 may generate forced convection within the washing chamber C.

[0114] The blower 800 may be disposed on the other side of the tub 12. That is, the blower 800 may be disposed on the opposite side of the water tank 100. For example, the blower 800 may be disposed on the left side (−Y direction) of the tub 12, and the water tank 100 may be disposed on the right side (+Y direction) of the tub 12. However, the positions where the blower 800 and the water tank 100 are disposed are not limited thereto.

[0115] Air in the washing chamber C may flow actively due to the air current formed by the blower 800 and the air current formed by the first fan device 300 and the ducts 150, 160, and 400. Accordingly, the drying efficiency of the dishwasher 1a may be increased.

[0116] The blower 800 may include a blower duct 810. The blower duct 810 may be in communication with the washing chamber C. The blower duct 810 may be configured to receive air in the washing chamber C or to discharge air into the washing chamber C.

[0117] 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. Because two air outlets 821 and 822 are provided, the air within the washing chamber C may flow more actively.

[0118] The blower 800 may include a second fan device (not shown). The second fan device (not shown) may generate an air flow to allow air within the washing chamber C to flow into the blower duct 810.

[0119] 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 in the washing chamber C from flowing into the ducts 150, 160, and 400.

[0120] The dishwasher 1a may include a second inlet cover 920. The second inlet cover 920 may cover the 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 chamber C from flowing into the blower duct 810.

[0121] FIG. 8 illustrates an inside of a water tank of the 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 A-A′ shown in FIG. 5. FIG. 10 illustrates a portion of a cross-section taken along line B-B′ shown in FIG. 5. FIG. 11 is a cross-sectional perspective view illustrating internal components of a connection duct of the dishwasher according to one embodiment of the present disclosure. FIG. 12 is a cross-sectional side view illustrating the internal components of the connection duct of the dishwasher according to one embodiment of the present disclosure.

[0122] Referring to FIG. 8, the water tank 100 may include the storage space 110 for storing water. The storage space 110 may be formed inside the water tank 100.

[0123] 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, a pressure applied to the water tank 100 by the water may be formed uniformly, thereby preventing the swelling of the water tank 100.

[0124] The water stored in the storage space 110 may be softened through a softening device (not shown) provided inside or outside the water tank 100. In addition, water softened through the softening device (not shown) may be introduced into and stored in the storage space 110. Water softened through the softening device (not shown) may be referred to as washing water.

[0125] As described above, the water tank 100 may be disposed on one side of the tub 12. With this configuration, water stored in the storage space 110 may receive heat from the washing chamber C.

[0126] The water supplied to the storage space 110 from an external water source (not shown) may be provided at a relatively low temperature. After the water is supplied to the storage space 110, the water may receive heat from the washing chamber C and thus the temperature of the water may be similar to the temperature of the washing chamber C. Accordingly, an amount of energy required to heat the water stored in the storage space 110 at a predetermined temperature for a washing process may be reduced.

[0127] 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 predetermined amount of water flows into the storage space 110, the excess amount of water may flow into the water level control channel 121 and be discharged into the washing chamber C through the water level control opening 122. Accordingly, an appropriate amount of water may always be stored inside the water tank 100.

[0128] 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 the sump assembly 70 (refer to FIG. 3). The water tank hole 130 may be provided at a lower end of the water tank 100.

[0129] The water tank 100 may include a water inlet channel 140 connected to the water tank hole 130. Water flowing into the water tank 100 through the water tank hole 130 may pass through the water inlet channel 140 and be discharged into the storage space 110.

[0130] The dishwasher 1a may include a valve 200. The valve 200 may be configured to open or close a drain hole 112 provided at a lower end of the storage space 110. For example, the valve 200 may be provided as a solenoid valve.

[0131] Particularly, when the valve 200 opens the drain hole 112, water stored in the storage space 110 may be discharged to the sump assembly 70 (refer to 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) may flow into the storage space 110 through the water tank hole 130 and the water inlet channel 140.

[0132] As described above, the inlet duct 150 and the outlet duct 160 may each be provided inside the water tank 100. Particularly, the inlet duct 150 and the outlet duct 160 may each be provided on one side of the storage space 110. However, the inlet duct 150 and the outlet duct 160 do not necessarily have to be provided inside the water tank 100. For example, on the outside of the water tank 100, the inlet duct 150 and the outlet duct 160 may be provided separately from the water tank 100.

[0133] As described above, at the lower side of the water tank 100, the connection duct 400 may be coupled to the water tank 100. In addition, the connection duct 400 may include the duct body 410, the first cover 420 coupled to one side of the duct body 410, and the second cover 430 coupled to the other side of the duct body 410.

[0134] The connection duct 400 may include a first connection duct coupling portion 419 for connection to the inlet duct 150. As the first connection duct coupling portion 419 of the duct body 410 is coupled to an inlet duct coupling portion 152 formed on the other end of the inlet duct 150, the connection duct 400 and the inlet duct 150 may be connected to each other. Accordingly, air introduced into the inlet duct 150 from the washing chamber C may flow into the connection duct 400.

[0135] Referring to FIG. 9, the dishwasher 1a according to one embodiment of the present disclosure may include an inlet sealing member 170 for sealing between the first connection duct coupling portion 419 of the duct body 410 and the inlet duct coupling portion 152 of the inlet duct 150. The inlet sealing member 170 may seal a portion in which the first connection duct coupling portion 419 and the inlet duct 150 are connected. The inlet sealing member 170 may be provided to prevent air, which flows from the inlet duct 150 to the connection duct 400, from leaking out to the outside of the inlet duct 150 and the connection duct 400. 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 connection duct 400 and / or the inlet duct 150.

[0136] The inlet sealing member 170 may be disposed between an outer side of the inlet duct coupling portion 152 of the inlet duct 150 and an inner side of the first connection duct coupling portion 419 of the duct body 410. For example, the inlet sealing member 170 may be coupled to an inlet sealing mounting portion 153 that is formed in a portion of an outer circumference of the inlet duct coupling portion 152. As the inlet duct coupling portion 152 is coupled to the first connection duct coupling portion 419 in a state in which the inlet sealing member 170 is coupled to the inlet sealing mounting portion 153, the inlet sealing member 170 may be in contact with the first connection duct coupling portion 419.

[0137] For example, the inlet sealing member 170 may include an inlet sealing protrusion 171 provided to be in close contact with the first connection duct coupling portion 419 when the inlet duct coupling portion 152 is coupled to the first connection duct coupling portion 419. The inlet sealing protrusion 171 may protrude toward the first connection duct coupling portion 419.

[0138] For example, the inlet duct coupling portion 152 may include an inlet mounting support portion 154 for supporting the inlet sealing member 170 while the inlet duct coupling portion 152 is being coupled to the first connection duct coupling portion 419 in the state in which the inlet sealing member 170 is mounted on the inlet sealing mounting portion 153. The inlet mounting support portion 154 may reduce a risk that the inlet sealing member 170 coupled to the inlet sealing mounting portion 153 is separated from the inlet sealing mounting portion 153 by a friction with the first connection duct coupling portion 419 while the inlet duct coupling portion 152 is being coupled to the first connection duct coupling portion 419. For example, the inlet mounting support portion 154 may extend in a direction perpendicular to a direction in which the inlet sealing member 170 is coupled to the inlet sealing mounting portion 153.

[0139] 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 in the state in which the inlet sealing member 170 is mounted on the inlet sealing mounting portion 153. The inlet separation support portion 155 may reduce a risk that the inlet sealing member 170 coupled to the inlet sealing mounting portion 153 is separated from the inlet sealing mounting portion 153 by a friction with the first connection duct coupling portion 419 while the inlet duct coupling portion 152 is being separated from the first connection duct coupling portion 419. For example, the inlet separation support portion 155 may extend in a direction perpendicular to a direction in which the inlet sealing member 170 is separated from the inlet sealing mounting portion 153.

[0140] For example, the inlet duct coupling portion 152 may include an inlet mounting guide 156 provided to be guided to a mounting direction by the first connection duct coupling portion 419 while the inlet duct coupling portion 152 is being mounted on the first connection duct coupling portion 419. For example, the inlet mounting guide 156 may be formed to be inclined in a direction in which the inlet duct coupling portion 152 is mounted on the first connection duct coupling portion 419.

[0141] The connection duct 400 may include a second connection duct coupling portion 439 for connection to the outlet duct 160. As the second connection duct coupling portion 439 of the second cover 430 is coupled to an outlet duct coupling portion 162 formed at the other end of the outlet duct 160, the connection duct 400 and the outlet duct 160 may be connected to each other. Accordingly, air in the connection duct 400 may be discharged to the washing chamber C through the outlet duct 160.

[0142] Referring to FIG. 10, the dishwasher 1a according to one embodiment of the present disclosure may include an outlet sealing member 180 for sealing between the second connection duct coupling portion 439 of the duct body 410 and the outlet duct coupling portion 162 of the outlet duct 160. The outlet sealing member 180 may seal a portion in which the second connection duct coupling portion 439 and the outlet duct 160 are connected. The outlet sealing member 180 may be provided to prevent air, which flows from the connection duct 400 to the outlet duct 160, from leaking out to the outside of the outlet duct 160 and the connection duct 400. For example, the outlet sealing member 180 may include a material that is more flexible than a portion of the water tank 100 forming the connection duct 400 and / or the outlet duct 160.

[0143] The outlet sealing member 180 may be disposed between an outer side of the outlet duct coupling portion 162 of the outlet duct 160 and an inner side of the second connection duct coupling portion 439 of the duct body 410. For example, the outlet sealing member 180 may be coupled to an outlet sealing mounting portion 163 that is formed in a portion of an outer circumference of the outlet duct coupling portion 162. As the outlet duct coupling portion 162 is coupled to the second connection duct coupling portion 439 in a state in which the outlet sealing member 180 is coupled to the outlet sealing mounting portion 163, the outlet sealing member 180 may be in contact with the second connection duct coupling portion 439.

[0144] For example, the outlet sealing member 180 may include an outlet sealing protrusion 181 provided to be in close contact with the second connection duct coupling portion 439 when the outlet duct coupling portion 162 is coupled to the second connection duct coupling portion 439. The outlet sealing protrusion 181 may protrude toward the second connection duct coupling portion 439.

[0145] For example, the outlet duct coupling portion 162 may include an outlet mounting support portion 164 for supporting the outlet sealing member 180 while the outlet duct coupling portion 162 is being coupled to the second connection duct coupling portion 439 in the state in which the outlet sealing member 180 is mounted on the outlet sealing mounting portion 163. The outlet mounting support portion 164 may reduce a risk that the outlet sealing member 180 coupled to the outlet sealing mounting portion 163 is separated from the outlet sealing mounting portion 163 by a friction with the second connection duct coupling portion 439 while the outlet duct coupling portion 162 is being coupled to the second connection duct coupling portion 439. For example, the outlet mounting support portion 164 may extend in a direction perpendicular to a direction in which the outlet sealing member 180 is coupled to the outlet sealing mounting portion 163.

[0146] For example, the outlet duct coupling portion 162 may include an outlet separation support portion 165 for supporting the outlet sealing member 180 while the outlet duct coupling portion 162 is being separated from the second connection duct coupling portion 439 in the state in which the outlet sealing member 180 is mounted on the outlet sealing mounting portion 163. The outlet separation support portion 165 may reduce a risk that the outlet sealing member 180 coupled to the outlet sealing mounting portion 163 is separated from the outlet sealing mounting portion 163 by a friction with the second connection duct coupling portion 439 while the outlet duct coupling portion 162 is being separated from the second connection duct coupling portion 439. For example, the outlet separation support portion 165 may extend in a direction perpendicular to a direction in which the outlet sealing member 180 is separated from the outlet sealing mounting portion 163.

[0147] For example, the outlet duct coupling portion 162 may include an outlet mounting guide 166 provided to be guided to a mounting direction by the second connection duct coupling portion 439 while the outlet duct coupling portion 162 is being mounted on the second connection duct coupling portion 439. For example, the outlet mounting guide 166 may be formed to be inclined in a direction in which the outlet duct coupling portion 162 is mounted on the second connection duct coupling portion 439.

[0148] Referring to FIGS. 3 and 8, as for the dishwasher 1a according to one embodiment of the present disclosure, the inlet duct coupling portion 152 and the outlet duct coupling portion 162 may be disposed on the rear side of the dishwasher 1a. As for the dishwasher 1a according to one embodiment of the present disclosure, the first connection duct coupling portion 419 and the second connection duct coupling portion 439 may be disposed on the rear side of the dishwasher 1a. The first connection duct coupling portion 419 and the second connection duct coupling portion 439 may be disposed rearward from the center of the tub 12 in the front and rear direction. The inlet duct coupling portion 152 and the outlet duct coupling portion 162 may be disposed behind the sump assembly 70. The first connection duct coupling portion 419 and the second connection duct coupling portion 439 may be disposed behind the sump assembly 70.

[0149] Referring to FIGS. 11 and 12, a first flow path P1 may be formed by coupling the duct body 410 and the first cover 420. A second flow path P2 may be formed by coupling the duct body 410 and the second cover 430. For example, the first flow path P1 and the second flow path P2 may each extend in the left and right direction (Y direction).

[0150] The first flow path P1 may be formed on the upstream side of the second flow path P1. That is, air flowing from the inlet duct 150 into the connection duct 400 may sequentially pass through a space between the duct body 410 and the first cover 420 and a space between the duct body 410 and the second cover 430, and flow into the outlet duct 160.

[0151] According to the present disclosure, air introduced into the inlet duct 150 from the washing chamber C may flow into the connection duct 400 and then be discharged back into the washing chamber C through the outlet duct 160. That is, the ducts 150, 160, and 400 may form a circulation flow path together with the washing chamber C.

[0152] As described above, the cooling portion 530 may be disposed between the duct body 410 and the first cover 420. That is, the cooling portion 530 may be disposed on the first flow path P1 formed between the duct body 410 and the first cover 420. With this configuration, the cooling portion 530 may cool the air introduced into the connection duct 400 through the inlet duct 150.

[0153] Air passing through the first flow path P1 may be cooled by the cooling portion 530. Accordingly, the first flow path P1 may be referred to as a cooling flow path P1.

[0154] As described above, the heating portion 540 may be disposed between the duct body 410 and the second cover 430. That is, the heating portion 540 may be disposed on the second flow path P2 formed between the duct body 410 and the second cover 430. Because the second flow path P2 is formed on the downstream side of the first flow path P1, the heating portion 540 may heat the air passing through the first flow path P1.

[0155] Air passing through the second flow path P2 may be heated by the heating portion 540. Accordingly, the second flow path P2 may be referred to as a heating flow path P2.

[0156] According to the present disclosure, the cooling portion 530 may be provided on the upstream side of the heating portion 540 based on a flow direction of air flowing into the connection duct 400. Accordingly, the air flowing into the connection duct 400 may be cooled by the cooling portion 530, and the air cooled by passing through the cooling portion 530 may be heated again by the heating portion 540.

[0157] Air flowing into the connection duct 400 may be air that is introduced from the washing chamber C through the inlet duct 150, and thus the air may be high temperature and high humidity air. The cooling portion 530 may cool the high temperature and high humidity air to generate condensate water and simultaneously to form low temperature and low humidity air. The heating portion 540 may heat the air, which is cooled by the cooling portion 530, to form high temperature and low humidity air. The high temperature and low humidity air that passes through the heating portion 540 may be discharged into the washing chamber C through the outlet duct 160. The air discharged into the washing chamber C may absorb moisture in the washing chamber C and become high temperature and high humidity air again. The high temperature and high humidity air may flow into the connection duct 400 again through the inlet duct 150.

[0158] That is, the high temperature and high humidity air in the washing chamber C may become high temperature and low humidity air by passing through the ducts 150, 160, and 400. The high temperature and low humidity air may again become high temperature and high humidity air by absorbing moisture in the washing chamber C. Accordingly, the air in the washing chamber C may repeatedly pass through the above-mentioned process while flowing along the circulation flow path formed by the washing chamber C and the ducts 150, 160, and 400. Accordingly, moisture in the washing chamber C may be gradually removed.

[0159] In addition, high temperature air may have a higher saturation water vapor content than low temperature air. That is, high temperature air may contain a larger amount of water vapor than low temperature air. Therefore, a larger amount of moisture may be removed when high temperature and low humidity air is discharged to the washing chamber C than when low temperature and low humidity air is discharged to the washing chamber C.

[0160] According to the present disclosure, the outlet duct 160 may discharge high temperature and low humidity air to the washing chamber C through the cooling portion 530 and the heating portion 540. With this configuration, the drying efficiency of the dishwasher 1a may be increased.

[0161] The cooling portion 530 may include a cooling plate 531. One surface of the cooling plate 531 may be in contact with the heat-absorbing surface 511 of the thermoelectric element 510. A cross-section of the cooling plate 531 may be wider than the heat-absorbing surface 511 of the thermoelectric element 510. With this configuration, the cooling efficiency of the thermoelectric device 500 may be increased.

[0162] The cooling portion 530 may include a plurality of cooling fins 532. Each of the plurality of cooling fins 532 may protrude from the other surface of the cooling plate 531.

[0163] The plurality of cooling fins 532 may extend along a direction in which the first flow path P1 extends. The plurality of cooling fins 532 may be arranged in a direction intersecting a direction in which the first flow path P1 extends. For example, the plurality of cooling fins 532 may extend in the left and right direction (Y direction) and may be arranged in the front and rear direction (X direction). With this configuration, an area cooled by the cooling portion 530 may be increased. That is, the cooling efficiency of the thermoelectric device 500 may be increased.

[0164] As the high temperature and high humidity air flowing along the first path P1 passes through the plurality of cooling fins 532, the air may be cooled and condensate water may be formed on the plurality of cooling fins 532. The condensate water formed on the plurality of cooling fins 532 may fall down due to its own weight.

[0165] A cross-section of each of the plurality of cooling fins 532 (particularly, a cross-section on the Y-Z 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 cross-section in the shape of a trapezoid with a slanted lower portion. In this case, the condensate water 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 a vertex of the trapezoid, and thus the condensate water may more easily fall off from the plurality of cooling fins 532.

[0166] The heating portion 540 may include a heating plate 541. One surface of the heating plate 541 may be in contact with the heat-generating surface 512 of the thermoelectric element 510. A cross-section of the heating plate 541 may be wider than the heat-generating surface 512 of the thermoelectric element 510. With this configuration, the heating efficiency of the thermoelectric device 500 may be increased.

[0167] The heating portion 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.

[0168] The 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. With this configuration, an area heated by the heating portion 540 may be increased. That is, the heating efficiency of the thermoelectric device 500 may be increased.

[0169] The connection duct 400 may include the storage portion 440. The storage portion 440 may be configured to collect condensate water generated in the cooling portion 530.

[0170] The storage portion 440 may be recessed into a bottom surface 400a of the connection duct 400 provided below the thermoelectric device 500. Particularly, the storage portion 440 may be provided below the cooling portion 530. With this configuration, condensate water generated in the cooling portion 530 may be collected more effectively.

[0171] The connection duct 400 may include an outlet hole 450. The outlet hole 450 may be provided to discharge condensate water collected in the storage portion 440.

[0172] The outlet hole 450 may be provided at a lower end of the storage portion 440. The bottom surface 440a of the storage portion 440 may be inclined to guide condensate water collected in the storage portion 440 to the outlet hole 450. With this configuration, the condensate water collected in the storage portion 440 may flow to the outlet hole 450 by its own weight.

[0173] The connection 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 portion 440. Each of the plurality of protruding ribs 460 may guide condensate water collected in the storage portion 440 to the outlet hole 450.

[0174] The first connecting hose 710 may be coupled to the outlet hole 450. That is, the first connecting hose 710 may connect the condensate pump 600 and the outlet hole 450. Accordingly, the condensate water collected in the storage portion 440 may flow to the condensate pump 600 through the first connecting hose 710.

[0175] The condensate pump 600 may be configured to discharge the condensate water, which is collected in the storage portion 440, from the storage portion 440. For example, the condensate pump 600 may be configured to discharge the condensate water collected in the storage portion 440 to the washing chamber C. That is, the condensate pump 600 may pump the condensate water collected in the storage portion 440, and discharge the pumped condensate water to the washing chamber C. For example, the condensate water pumped from the condensate pump 600 may be moved to the water tank 100 through the second connecting hose 720 and then discharged to the washing chamber C through the first air outlet 161.

[0176] That is, the condensate water collected in the storage portion 440 may be discharged to the washing chamber C by the condensate pump 600. The condensate water discharged to the washing chamber C may be collected in the sump assembly 70 (refer to FIG. 3) provided below the washing chamber C.

[0177] In the present disclosure, one embodiment in which condensate water is discharged to the washing chamber C is described, but the present disclosure is not limited thereto. For example, condensate water may also be discharged into the storage space 110 of the water tank 100 through the condensate pump 600. With this configuration, the total amount of water supplied to the storage space 110 from an external water source (not shown) may be reduced.

[0178] FIG. 13 is a cross-sectional perspective view illustrating internal components of a connection duct according to one embodiment of the present disclosure. FIG. 14 is a cross-sectional side view illustrating the internal components of the connection duct according to one embodiment of the present disclosure.

[0179] 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 given the same reference numerals, and a detailed description thereof may be omitted.

[0180] Referring to FIGS. 13 and 14, an inlet duct coupling portion 152 of an inlet duct 150 may be connected to a first connection duct coupling portion 419′ and an outlet duct coupling portion 162 of an outlet duct 160 may be connected to a second connection duct coupling portion 439′.

[0181] A flow path through which air introduced from the inlet duct 150 flows toward the outlet duct 160 may be formed inside the connection duct 400′. Particularly, a third flow path P3 provided on the relatively upstream side and a fourth flow path P4 provided on the relatively downstream side may be formed inside the connection duct 400′. That is, air introduced into the connection 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 discharged through the outlet duct 160. Each of the third flow path P3 and the fourth flow path P4 may extend substantially in the up and down direction (Z direction).

[0182] The thermoelectric device 500′ may be disposed inside the connection duct 400′. The thermoelectric device 500′ may include a thermoelectric element 510′, a cooling portion 530′, and a heating portion 540′. The cooling portion 530′ may be provided on one side of the thermoelectric element 510′, and the heating portion 540′ may be provided on the other side of the thermoelectric element 510′. For example, the cooling portion 530′ may be disposed on the right side (+Y direction) of the thermoelectric element 510′, and the heating portion 540′ may be disposed on the left side (−Y direction) of the thermoelectric element 510′.

[0183] The cooling portion 530′ may be disposed on the third flow path P3. With this configuration, the cooling portion 530′ may cool air that flows into the connection duct 400′ through the inlet duct 150.

[0184] Air may be cooled by the cooling portion 530′ while passing through the third flow path P3. Accordingly, the third flow path P3 may be referred to as a cooling flow path P3.

[0185] The heating portion 540′ may be disposed on a fourth flow path P4. Because the fourth flow path P4 is formed on the downstream side of the third flow path P3, the heating portion 540′ may heat the air passing through the third flow path P3.

[0186] Air may be heated by the heating portion 540′ while passing through the fourth flow path P4. Accordingly, the fourth flow path P4 may be referred to as a heating flow path P4.

[0187] The cooling portion 530′ may include a plurality of cooling fins 532′. Each of the plurality of cooling fins 532′ may extend along a 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 up and down direction (Z direction) and may be arranged in the front and rear direction (X direction). With this configuration, an area cooled by the cooling portion 530′ may be increased. That is, the cooling efficiency of the thermoelectric device 500′ may be increased.

[0188] As high temperature and high humidity air flowing along the third flow path P3 passes through the plurality of cooling fins 532′, the air may be cooled and condensation water may be generated on the plurality of cooling fins 532′. The condensation water generated on the plurality of cooling fins 532′ may fall down due to its own weight.

[0189] In addition, because the high temperature and high humidity air flowing along the third flow path P3 flows downward, the condensate water generated on the plurality of cooling fins 532′ may be relatively easily removed from the plurality of cooling fins 532′ by the air. Accordingly, the condensate water may be collected more effectively.

[0190] The connection duct 400′ may include a storage portion 440′ having a bottom surface 440a′. The storage portion 440′ may be recessed in a bottom surface 400a′ of the connection duct 400′ provided below the thermoelectric device 500′. The storage portion 440′ may be provided to collect condensate water falling from the plurality of cooling fins 532′.

[0191] The heating portion 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 up and down direction (Z direction) and may be arranged in the front and rear direction (X direction). With this configuration, an area heated by the heating portion 540′ may be increased. That is, the heating efficiency of the thermoelectric device 500′ may be increased.

[0192] FIG. 15 is a control block diagram of the dishwasher according to one embodiment of the present disclosure.

[0193] Referring to FIG. 15, the dishwasher 1a according to one embodiment of the present disclosure may include a controller 1100, a user interface 1200, a communication circuitry 1300, and a temperature sensor 1400.

[0194] The controller 1100 may be electrically connected to various components of the dishwasher 1a. The controller 1100 may control various components of the dishwasher 1a.

[0195] The controller 1100 may include at least one memory 1120 and at least one processor 1110 to perform the operations described above and operations described below.

[0196] The memory 1120 may be configured to store data in the form of an algorithm and / or a program for controlling the operation of components in the dishwasher 1a. The processor 1110 may be configured to perform the above-described operation and an operation to be described later by using the data stored in the 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.

[0197] The controller 1100 may process a user input received through the user interface 1200 and may control various components of the dishwasher 1a based on the processed user input.

[0198] The controller 1100 may control various components of the dishwasher 1a to perform a cycle including washing processes (2200 and 2300), a rinsing process (2400), a drying process (2500), a cooling process (2600), etc., which will be described later, according to the user input received through the user interface 1200.

[0199] The user interface 1200 may interact with a user.

[0200] The user interface 1200 may obtain a user input. The user interface 1200 may display information about the dishwasher 1a. For example, the user interface 1200 may also provide visual and / or auditory feedback.

[0201] The user interface 1200 may include an inputter 1210.

[0202] The inputter 1210 may receive an operation command from a user. The inputter 1210 may provide an electrical output signal corresponding to the user input to the controller 1100.

[0203] The inputter 1210 may include various buttons and / or dials. The inputter 1210 may obtain various user inputs, such as a user input for turning on or off the dishwasher 1a, a user input for selecting a washing course, a washing option, etc.

[0204] The user interface 1200 may include a display 1220.

[0205] The display 1220 may display information about the status and / or operation of the dishwasher 1a. The display 1220 may display information input by a user and / or information provided to a user. The display 1220 may display information related to the operation of the dishwasher 1a as at least one of an image or text. The display 1220 may receive a signal from the controller 1100 and display information corresponding to the received signal. In addition, the display 1220 may display a graphical user interface (GUI) that allows the control of the dishwasher 1a. That is, the display 1220 may display a User Interface (UI) element such as an icon.

[0206] The display 1220 may include various types of display panels. For example, the display may include a Liquid Crystal Display (LCD) Panel, a Light Emitting Diode (LED) Panel, an Organic Light Emitting Diode (OLED) Panel, or a Micro LED Panel. Additionally, the display may be implemented as a touch display.

[0207] The dishwasher 1a may provide various washing courses for washing dishes. For example, various washing courses such as an automatic course, a standard course, a strong course, a quick course, and / or a rinse-dry course may be provided. The number and / or types of processes included in each washing course may be different. In addition, each washing course may include various washing options (e.g., washing time, temperature, etc.) that may be changed. By using the user interface 1200, a user can select the washing course and change various washing options that constitute the washing course. The dishwasher 1a may operate according to the washing course and washing options set by the user input.

[0208] The communication circuitry 1300 may transmit data to an external device or receive data from an external device based on a control signal from the controller 1100. For example, the communication circuitry 1300 may communicate with a server, a user terminal device, and / or other home appliances to transmit and receive various types of data.

[0209] The communication circuitry 1300 may support establishment of a direct (e.g., wired) communication channel or a wireless communication channel between external devices (e.g., a server, a user terminal device, and / or a home appliance), and performance of communication through the established communication channel. According to one embodiment, the communication circuitry 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 (Wi-Fi) 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 a plurality of separate components (e.g., a plurality of chips).

[0210] The communication circuitry 1300 may establish communication with a user terminal device through a server.

[0211] The communication circuitry 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) within the home.

[0212] The sensor module 1400 may detect an environmental condition of the dishwasher 1a and generate an electric signal or data value corresponding to the detected condition.

[0213] For example, the sensor module 1400 may include a washing water temperature sensor 1410 configured to detect a temperature of washing water, and a condensate level sensor 1420 configured to detect a level of condensate water stored in the connection duct 400.

[0214] The controller 1100 may control the circulation pump 71. The controller 1100 may operate or stop the circulation pump 71. Particularly, the controller 1100 may control the circulation pump 71 based on a user input obtained through the user interface 1200 and / or an external device. The controller 1100 may control on / off, operating time, and rotation speed of the circulation pump 71.

[0215] The controller 1100 may control the drain pump 72. The controller 1100 may operate or stop the drain pump 72. Particularly, the controller 1100 may control the drain pump 72 based on a user input obtained through the user interface 1200 and / or an external device. The controller 1100 may control on / off, operating time, and rotation speed of the drain pump 72.

[0216] The controller 1100 may control the first fan device 300. The controller 1100 may operate or stop the first fan device 300. Particularly, the controller 1100 may control the first fan device 300 based on a user input obtained through the user interface 1200 and / or an external device. The controller 1100 may control on / off, operating time, and rotation speed of the first fan device 300.

[0217] The controller 1100 may control the thermoelectric device 500. The controller 1100 may operate or stop the thermoelectric device 500. Particularly, the controller 1100 may control the thermoelectric device 500 based on a user input obtained through the user interface 1200 and / or an external device. The controller 1100 may control on / off, and operating time of the thermoelectric device 500.

[0218] The controller 1100 may control the condensate pump 600. The controller 1100 may operate or stop the condensate pump 600. Particularly, the controller 1100 may control the condensate pump 600 based on a user input obtained through the user interface 1200 and / or an external device. The controller 1100 may control on / off, and operating time of the condensate pump 600.

[0219] The controller 1100 may control the blower 800. The controller 1100 may operate or stop the blower 800. Particularly, the controller 1100 may control the blower 800 based on a user input obtained through the user interface 1200 and / or an external device. The controller 1100 may control on / off and operating time of the blower 800, and rotation speed of the second fan device (not shown).

[0220] The controller 1100 may control a washing chamber heater 81, a washing water heater 82, and a tub opening and closing device 83 to be described later.

[0221] The dishwasher 1a may include the washing chamber heater 81. The washing chamber heater 81 may be configured to heat the washing compartment C to more efficiently wash dishes stored in the washing compartment C.

[0222] The dishwasher 1a may include the washing water heater 82. The washing water heater 82 may be configured to heat washing water to more efficiently wash dishes stored in the washing chamber C. For example, the washing water heater 82 may be provided in the circulation pump 71. That is, while the circulation pump 71 is operating, the washing water heater 82 may heat water pumped by the circulation pump 71. However, the location of the washing water heater 82 is not limited thereto.

[0223] The dishwasher 1a may include the tub opening and closing device 83. The tub opening and closing device 83 may be configured to open and close the opening 12a of the tub 12 by rotating the door 11. For example, when the controller 1100 performs the drying process (2500) described below, the controller 1100 may open the opening 12a of the tub 12 through the tub opening and closing device 83 in order to dry the washing chamber C more efficiently.

[0224] The controller 1100 may control the washing chamber heater 81. The controller 1100 may operate or stop the washing chamber heater 81. Particularly, the controller 1100 may control the washing chamber heater 81 based on a user input obtained through the user interface 1200 and / or an external device. The controller 1100 may control on / off, operating time, and heating temperature of the washing chamber heater 81.

[0225] The controller 1100 may control the washing water heater 82. The controller 1100 may operate or stop the washing water heater 82. Particularly, the controller 1100 may control the washing water heater 82 based on a user input obtained through the user interface 1200 and / or an external device. The controller 1100 may control on / off, operating time, and heating temperature of the washing water heater 82.

[0226] The controller 1100 may control the tub opening and closing device 83. The controller 1100 may operate or stop the tub opening and closing device 83. Particularly, the controller 1100 may control the tub opening and closing device 83 based on a user input obtained through the user interface 1200 and / or an external device. The controller 1100 may control on / off of the tub opening and closing device 83, and an opening time of the tub 12.

[0227] FIG. 16 is a flowchart illustrating a method for controlling the dishwasher according to one embodiment of the present disclosure. FIG. 17 is a flowchart illustrating a method for controlling a drying process according to one embodiment of the present disclosure.

[0228] A control method (2000) of the dishwasher 1a according to one embodiment of the present disclosure will be described with reference to FIGS. 16 and 17.

[0229] A user can select the washing course and / or washing option through the inputter 1210 of the user interface 1200, and the processor 1110 may retrieve a command or data corresponding to the user input (2100).

[0230] The washing course may include various courses such as the automatic course, the standard course, the strong course, a glass course, the quick course, the rinse dry course or an internal washing course.

[0231] Depending on the type of washing course, washing order, water consumption, washing temperature, and / or washing time may vary.

[0232] For example, based on the automatic course being selected, the controller 1100 may perform a process appropriate to a level of dish contamination determined through the sensor module 1400.

[0233] For example, based on the standard course being selected, the controller 1100 may perform only the main washing process (2300) and the rinsing process (2400) without the pre-washing process (2200) described later.

[0234] For example, based on the strong course being selected, the controller 1100 may perform all of the pre-washing process (2200), the main washing process (2300), and the rinsing process (2400).

[0235] According to the present disclosure, the operating time or the heating temperature of the washing chamber heater 81 configured to heat the washing chamber C or the washing water heater 82 configured to heat the washing water may be different depending on the type of washing course. That is, the washing chamber C may be heated at different temperatures depending on the type of washing course.

[0236] For example, based on the strong course being selected, the washing chamber C may be heated at a relatively high temperature. Accordingly, power consumption may increase, but the washing performance of the dishes may be improved.

[0237] For example, based on the automatic course or the standard course being selected, the washing chamber C may be heated at a relatively low temperature. Therefore, the washing performance of the dishes may be reduced, but the power consumption may be reduced.

[0238] The washing options may mean options for adding another process to the selected washing course or for changing some of the settings of the selected washing course.

[0239] For example, the washing options may include an option for adding the drying process to the selected washing course (hereinafter referred to as a ‘hot air-drying option’), and an option for improving drying performance by increasing the temperature of the rinsing water without adding the drying process to the selected washing course (hereinafter referred to as a ‘drying improvement option’).

[0240] For example, when it is assumed that the rinsing water temperature in the rinsing process is set to 55° C. in the standard course, and when the drying improvement option is added to the standard course, the rinsing water temperature may be changed to 80° C. In addition, when the hot air-drying option is added to the standard course, the cooling process (2600) may be added after the rinsing process (2400).

[0241] The controller 1100 may perform processes corresponding to the selected washing course and washing option.

[0242] For convenience of description, the processes performed by the controller 1100 are illustrated as a whole in FIGS. 16 and 17. However, some processes may be omitted and some processes may be added depending on the washing course and the washing options.

[0243] The controller 1100 may perform a condensate discharge operation (3000) through the condensate pump 600 (3000). Particularly, the controller 1100 may discharge the condensate water, which is collected in the storage portion 440, from the storage portion 440 by using the condensate pump 600 (3000). In other words, the controller 1100 may discharge the condensate water collected in the storage portion 440 to the outside of the connection duct 400 through the condensate pump 600 (3000).

[0244] That is, the controller 1100 may perform the condensate discharge operation (3000) before starting the pre-washing process (2200), the main washing process (2300), the rinsing process (2400), the drying process (2500), and the cooling process (2600) to be described later.

[0245] According to the present disclosure, after the washing course is performed once, condensate water generated in the cooling portion 530 of the thermoelectric device 500 may be collected in the storage portion 440. Based on the washing course being performed again without discharging the condensate water collected in the storage portion 440, some components of the thermoelectric device 500 may be submerged under the condensate water as a level of the condensate water increases. The thermoelectric device 500 includes the thermoelectric element 510 that is vulnerable to moisture, and thus when some components of the thermoelectric device 500 are submerged under the condensate water, a failure may occur in thermoelectric device 500.

[0246] According to the present disclosure, the controller 1100 may prevent the condensate water from exceeding a predetermined level because the controller 110 performs other processes after pumping the condensate water through the condensate pump 600. Accordingly, it is possible to prevent the failure of the thermoelectric device 500.

[0247] However, the sequence of the condensate discharge operation (3000) is not limited thereto. While the controller 1100 performs the drying process (2500), condensate water may be generated in the cooling portion 530 of the thermoelectric device 500. Accordingly, as long as the condensate discharge operation (3000) is performed before the controller 1100 performs the drying process (2500), it is possible to prevent the condensate water from exceeding the 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 in the drying process (2500). Hereinafter for convenience of description, only one embodiment, in which the condensate discharge operation (3000) is performed before the pre-washing process (2200) described below, will be described.

[0248] The controller 1100 may perform the pre-washing process (2200) after performing the condensate discharge operation (3000). The pre-washing process (2200) is a process for removing relatively large contaminants present on dishes by spraying washing water, in which detergent is not mixed, into the washing chamber C before the main washing process (2300).

[0249] The controller 1100 may perform the main washing process (2300) after performing the pre-washing process (2200). The main washing process (2300) is a process of heating the washing chamber C and spraying washing water into the washing chamber C to wash dishes stored in the washing chamber C using washing water.

[0250] The main washing process (2300) may include a washing water supply process that supplies washing water used for washing to the sump assembly 70, a washing water spray process that sprays washing water mixed with detergent into the washing chamber C through the 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.

[0251] As described above, depending on the type of washing course, the washing chamber C may be heated at different temperatures. Particularly, the controller 1100 may perform a plurality of main washing processes (2300) that heats the washing chamber C at different temperatures, and depending on the type of washing course, the main washing process (2300) performed by the controller 1100 may be different.

[0252] The controller 1100 may perform the rinsing process (2400) after performing the main washing process (2300).

[0253] The rinsing process (2400) may include a rinsing water supply process that supplies rinsing water used for rinsing to the sump assembly 70, a rinsing water spray process that sprays rising water stored in the sump assembly 70 through the spray device 40, and a rinsing water drain process that drains rinsing water stored in the sump assembly 70 and / or the spray device 40.

[0254] The controller 1100 may perform the drying process (2500) after performing the rinsing process (2400). The drying process (2500) is a process for drying dishes by circulating air inside the washing chamber C and supplying hot air into the washing chamber C using the first fan device 300, the thermoelectric device 500, and the blower 800.

[0255] Hereinafter the drying process (2500) will be described in details.

[0256] The controller 1100 may wait for moisture within the washing chamber C to evaporate. That is, the controller 1100 may wait for the air within the washing chamber C to become saturated vapor. At this time, the controller 1100 may operate the washing chamber heater 81 to allow moisture within the washing chamber C to evaporate more efficiently.

[0257] Based on the controller 1100 waiting for a predetermined waiting time (2510), the controller 1100 may operate the first fan device 300 and the blower 800 to form an airflow inside the washing chamber C (2521 and 2522). At this time, based on the controller 1100 performing the main washing process (2300) that heats the washing chamber C at a predetermined reference temperature or less (2520), the controller 1100 may additionally operate the thermoelectric device 500 (2521). In contrast, based on the controller 1100 performing the main washing process (2300) that heats the washing chamberC at a temperature exceeding the predetermined reference temperature (2520), the controller 1100 may not operate the thermoelectric device 500 (2522).

[0258] The thermoelectric element 510 of the thermoelectric device 500 may include the heat-absorbing surface 511 and the heat-generating surface 512, and the temperature of each of the heat-absorbing surface 511 and the heat-generating surface 512 may 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 may have a temperature lower than 40° C., and the heat-generating surface 512 may have a temperature higher than 40° C.

[0259] Due to the characteristics of the thermoelectric element 510 as described above, when the temperature around the thermoelectric element 510 becomes excessively high, the temperature of the heat-generating surface 512 may rise more than that. This may lead to overheating of the thermoelectric element 510 and damage to the thermoelectric element 510.

[0260] Accordingly, in a state in which the controller 1100 performing the main washing process (2300) that heats the washing chamber C at a temperature exceeding the predetermined reference temperature, when the controller 1100 operates the thermoelectric device 500, an ambient temperature of the thermoelectric element 510 may become excessively high, causing damages to the thermoelectric element 510.

[0261] According to the present disclosure, as the controller 1100 operates the thermoelectric device 500 (2521) based on the controller 1100 performing the main washing process (2300) that heats the washing chamber C at the predetermined reference temperature or less (2520), the controller 1100 may prevent damages to the thermoelectric element 510.

[0262] Hereinafter a case, in which the controller 1100 performs the main washing process (2300) that heats the washing chamber C at the predetermined reference temperature or less (2520), will be described.

[0263] Based on the controller 1100 performing the main washing process (2300) that heats the washing chamber C at the predetermined reference temperature or less (2520), the controller 1100 may operate the first fan device 300, the thermoelectric device 500, and the blower 800 (2521). Accordingly, as an air current is formed inside the washing chamber C, and the air inside the washing chamber C repeatedly passes through the cooling portion 530 and the heating portion 540 of the thermoelectric device 500, moisture inside the washing chamber C may be gradually removed.

[0264] Based on the elapse of a predetermined operating time (2531) after the controller 1100 operates the first fan device 300, the thermoelectric device 500, and the blower 800, the controller 1100 may stop the operation of the first fan device 300 and the thermoelectric device 500 (2541).

[0265] After the operation of the first fan device 300, the thermoelectric device 500, and the blower 800 is stopped, the controller 1100 may open the tub 12 by rotating the door 11 through the tub opening and closing device 83 (2551). The blower 800 may form an air current to allow air to flow between the inside and the outside of the washing chamber C. Accordingly, moisture within the washing chamber C may be removed more efficiently.

[0266] Based on the elapse of a predetermined opening time (2561) after the controller 1100 opens the tub 12 through the tub opening and closing device 83, the controller 1100 may close the tub 12 again by rotating the door 11 through the tub opening and closing device 83 (2571). Accordingly, the drying process (2500) may be terminated.

[0267] Hereinafter a case, in which the controller 1100 performs the main washing process (2300) that heats the washing chamber C at a temperature exceeding the predetermined reference temperature (2520), will be described.

[0268] Based on the controller 1100 performing the main washing process (2300) that heats the washing chamber C at a temperature exceeding the predetermined reference temperature (2520), the controller 1100 may operate the first fan device 300 and the blower 800 and open the tub 12 through the tub opening and closing device 83 to form an air current to allow air to flow between the inside and the outside of the washing chamber C (2522).

[0269] At this time, the controller 1100 may not operate the thermoelectric device 500. That is, based on the controller 1100 performing the main washing process (2300) that heats the washing chamber C at a temperature exceeding the predetermined reference temperature (2520), moisture in the washing chamber C may be removed only by the airflow formed by the first fan device 300 and the blower 800.

[0270] Based on the elapse of the predetermined operating time and the predetermined opening time (2532) after the controller 1100 operates the first fan device 300 and the blower 800 and opens the tub 12 through the tub opening and closing device 83, the controller 1100 may stop the operation of the first fan device 300 and the blower 800 and close the tub 12 again through the tub opening and closing device 83 (2542). Accordingly, the drying process (2500) may be terminated.

[0271] The dishwasher 1a may perform the cooling process (2600) after performing the drying process (2500). The cooling process (2600) is a process for lowering the temperature inside the washing chamber C to prevent safety accidents, and may be performed through the first fan device 300 and the blower 800. The cooling process (2600) may also be defined as a part of the drying process (2500).

[0272] Meanwhile, when the condensate discharge operation (3000) is included in the drying process (2500), the controller 1100 may operate the thermoelectric device 500 and perform the condensate discharge operation (3000) based on the controller 1100 performing the main washing process (2300) that heats the washing chamber C at the predetermined reference temperature or less (2520). On the other hand, based on the controller 1100 performing the main washing process (2300) that heats the washing chamber C at a temperature exceeding the predetermined reference temperature (2520), the controller 1100 may not operate the thermoelectric device 500 and may not perform the condensate discharge operation (3000).

[0273] FIG. 18 is a cross-sectional side view of a clothes dryer according to one embodiment of the present disclosure.

[0274] Hereinafter the 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 given the same reference numerals, and a detailed description thereof may be omitted.

[0275] 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.

[0276] The clothes dryer 1b may include a drum 4200 rotatably installed within the cabinet 4100. The drum 4200 may be configured to be rotatable by receiving power from a driving device 4400.

[0277] The clothes dryer 1b may include a receiving space C″ formed by the 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.

[0278] The receiving space C″ of the clothes dryer 1b may be referred to as a clothes treatment chamber C″. The clothes treatment chamber C″ may mean a space in which clothes are received and dried.

[0279] An inlet 4110 for putting clothes (not shown) corresponding to a drying object into or taking the clothes out of the clothes treatment chamber C″ may be provided on a front surface of the cabinet 4100. The clothes dryer 1b may include a door 4300 configured to open and close the inlet 4110.

[0280] The clothes dryer 1b may include ducts 150″, 160″, and 400″. The ducts 150″, 160″, and 400″ may be in communication with the clothes treatment chamber C″. The ducts 150″, 160″, and 400″ may be configured to receive air in the clothes treatment chamber C″ or to discharge air into the clothes treatment chamber C″.

[0281] The ducts 150″, 160″, and 400″ may include an inlet duct 150″ for allowing air discharged from the clothes treatment chamber C″ to flow, an outlet duct 160″ for discharging air into the clothes treatment chamber C″, and a connection duct 400″ connecting the inlet duct 150″ and the outlet duct 160″.

[0282] The clothes dryer 1b may include a fan device 300″ configured to form an air flow. The fan device 300″ may introduce air within the clothes treatment chamber C″ into the ducts 150″, 160″, and 400″ or discharge air in the ducts 150″, 160″, and 400″ to the clothes treatment chamber C″.

[0283] The clothes dryer 1b may include a thermoelectric device 500″. The thermoelectric device 500″ may be configured to cool or heat the air within the ducts 150″, 160″, and 400″.

[0284] According to the present disclosure, the clothes dryer 1b may include the thermoelectric device 500″ instead of a heat pump. Accordingly, components such as a compressor, a condenser, an expander, and an evaporator may be omitted.

[0285] The thermoelectric device 500″ may be disposed inside the ducts 150″, 160″, and 400″. Particularly, the thermoelectric device 500″ may be disposed inside the connection duct 400″.

[0286] The thermoelectric device 500″ may include a thermoelectric element 510″, a cooling portion 530″ configured to cool air introduced through the inlet duct 150″, and a heating portion 540″ configured to heat air passing through the cooling portion 530″.

[0287] Based on a direction of air flowing into the ducts 150″, 160″, and 400″, the cooling portion 530″ may be disposed on the upstream side of the heating portion 540″. With this configuration, air introduced into the ducts 150″, 160″, and 400″ from the clothes treatment chamber C″ may be cooled by the cooling portion 530″, and the air cooled by passing through the cooling portion 530″ may be reheated by the heating portion 540″ and then discharged into the clothes treatment chamber C″. In this process, high temperature and high humidity air in the clothes treatment chamber C″ may become high temperature and low humidity air, and condensate water may be generated in the cooling portion 530″.

[0288] The connection duct 400″ may include a storage portion 440″. The storage portion 440″ may be configured to collect condensate water generated in the cooling portion 530″.

[0289] The clothes dryer 1b may include a condensate pump 600″. The condensate pump 600″ may be configured to discharge condensate water generated inside the connection duct 400″ by the cooling portion 530″ to the outside of the connection duct 400″. Particularly, the condensate pump 600″ may be configured to discharge condensate water, which is collected in the storage portion 440″, from the storage portion 440″. For example, the condensate pump 600″ may discharge the condensate water to the outside of the clothes dryer 1b.

[0290] The clothes dryer 1b may include a first connecting hose 710″ connecting the condensate pump 600″ and the connection duct 400″, and a second connecting hose 720″ connecting the condensate pump 600″ and an external space of the clothes dryer 1b. With this configuration, the condensate water collected in the storage portion 440″ may flow to the condensate pump 600″ through the first connecting hose 710″ and then be discharged to the outside of the clothes dryer 1b through the second connecting hose 720″.

[0291] A dishwasher according to the present disclosure includes a tub for forming a washing chamber from which air is dischargeable, an inlet duct, a connection duct, an outlet duct, and a thermoelectric device under the tub and inside the connection duct, the thermoelectric device including a cooling portion configured to cool air, and a heating portion configured to heat air. The inlet duct, the connection duct, the outlet duct, and the thermoelectric device are configured so that air discharged from the washing chamber flows through the inlet duct to the connection duct where the air is cooled by the cooling portion so that moisture is removed from the air and then the air cooled by the cooling portion is heated by the heating portion, and then the air heated by the heating portion flows into the outlet duct to be discharged into the washing chamber

[0292] The connection duct may include a first connection duct coupling portion connecting the connection duct with the inlet duct, and a second connection duct coupling portion connecting the connection duct with the outlet duct.

[0293] The dishwasher may further include an inlet sealing member sealing a connection between the first connection duct coupling portion and the inlet duct.

[0294] The dishwasher may further include an outlet sealing member sealing a connection between the second connection duct coupling portion and the outlet duct.

[0295] The first connection duct coupling portion and the second connection duct coupling portion may be positioned rearward from a center of the tub.

[0296] The inlet duct and the outlet duct may extend along an outer surface of the tub.

[0297] The inlet duct and the outlet duct may extend in an up and down direction.

[0298] The dishwasher may further include a sump assembly configured to supply washing water to the washing chamber. The thermoelectric device may be positioned behind the sump assembly.

[0299] The dishwasher may further include a base frame forming a machine room partitioned from the washing chamber. The connection duct may be mounted in the machine room to a rear side of the base frame.

[0300] The thermoelectric device may include a thermoelectric element having one side in contact with the cooling portion, and another side in contact with the heating portion. The connection duct may include a duct body to which the thermoelectric element is mounted, a first cover coupled to one side of the duct body to form a cooling flow path for air to flow into the connection duct where air is cooled by the cooling portion, and a second cover coupled to another side of the duct body to form a heating flow path where the air cooled by the cooling portion is heated by the heating portion.

[0301] The cooling flow path and the heating flow path may extend in a left and right direction.

[0302] The thermoelectric device may be operable to cause air to be cooled by the cooling portion and air to be heated by the heating portion. The dishwasher may further include a controller configured to operate the thermoelectric device while the washing chamber is at a predetermined temperature or less, and stop operating the thermoelectric device while the washing chamber is at a temperature exceeding the predetermined temperature.

[0303] The dishwasher may further include a water tank in which washing water is storable, and from which washing water stored in the water tank is suppliable to the washing chamber. The inlet duct and the outlet duct may be in the water tank.

[0304] The dishwasher may further include a fan device mounted on the water tank, the fan device configured to cause air in the tub to be discharged from the tub into the inlet duct to flow through the inlet duct.

[0305] An appliance according to the present disclosure includes a main body, a receiving space formed inside the main body from which air is dischargeable, an inlet duct, a connection duct, an outlet duct, a thermoelectric device under the receiving space and inside the connection duct, the thermoelectric device including a cooling portion configured to cool air, and a heating portion configured to heat air, and a controller configured to: operate the thermoelectric device while the receiving space is at a predetermined temperature or less, and stop operating the thermoelectric device while the receiving space is at a temperature exceeding the predetermined temperature. The thermoelectric device is operable to cause air to be cooled by the cooling portion and air to be heated by the heating portion. The inlet duct, the connection duct, the outlet duct, and the thermoelectric device are configured so that air discharged from the receiving space flows through the inlet duct to the connection duct where the air is cooled by the cooling portion so that moisture is removed from the air and then the air cooled by the cooling portion is heated by the heating portion, and then the air heated by the heating portion flows into the outlet duct to be discharged into the receiving space.

[0306] The home appliance may further include an inlet sealing member for sealing a portion in which the inlet duct and the connection duct are connected, and an outlet sealing member for sealing a portion in which the outlet duct and the connection duct are connected.

[0307] The inlet sealing member and the outlet sealing member may be positioned rearward from a center of the main body in a front and rear direction.

[0308] The home appliance may further include a base frame provided to form a machine room partitioned from the receiving space. The connection duct may be mounted to the base frame inside the machine room.

[0309] The thermoelectric device may include a thermoelectric element provided with the cooling portion and the heating portion. The connection duct may include a duct body to which the thermoelectric element is mounted, a first cover coupled to one side of the duct body to form a cooling flow path for cooling air, which flows into the connection duct, through the cooling portion, and a second cover coupled to the other side of the duct body to form a heating flow path for heating air, which passes through the cooling flow path, through the heating portion.

[0310] The home 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.

[0311] According to the present disclosure, a dishwasher and a home appliance may include a thermoelectric device, thereby improving energy efficiency.

[0312] Further, a dishwasher and a home appliance may prevent leakage of air passing through a thermoelectric device, and thus energy efficiency may be improved.

[0313] Further, a dishwasher and a home appliance may utilize a space efficiently because a thermoelectric device is disposed below a receiving space.

[0314] Further, a dishwasher and a home appliance may control a thermoelectric device based on a temperature within a receiving space, thereby reducing damages to the thermoelectric device.

[0315] Additional aspects of the disclosure will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the disclosure.

[0316] While the present disclosure has been particularly described with reference to exemplary embodiments, it should be understood by those of skilled in the art that various changes in form and details may be made without departing from the spirit and scope of the present disclosure.

Claims

1. A dishwasher comprising:a tub for forming a washing chamber from which air is dischargeable;an inlet duct;a connection duct;an outlet duct; anda thermoelectric device under the tub and inside the connection duct, the thermoelectric device includinga cooling portion configured to cool air, anda heating portion configured to heat air;wherein the inlet duct, the connection duct, the outlet duct, and the thermoelectric device are configured so that air discharged from the washing chamber flows through the inlet duct to the connection duct where the air is cooled by the cooling portion so that moisture is removed from the air and then the air cooled by the cooling portion is heated by the heating portion, and then the air heated by the heating portion flows into the outlet duct to be discharged into the washing chamber.

2. The dishwasher of claim 1, whereinthe connection duct includes:a first connection duct coupling portion connecting the connection duct with the inlet duct; anda second connection duct coupling portion connecting the connection duct with the outlet duct.

3. The dishwasher of claim 2, further comprising:an inlet sealing member sealing a connection between the first connection duct coupling portion and the inlet duct.

4. The dishwasher of claim 2, further comprising:an outlet sealing member sealing a connection between the second connection duct coupling portion and the outlet duct.

5. The dishwasher of claim 2, whereinthe first connection duct coupling portion and the second connection duct coupling portion are positioned rearward from a center of the tub.

6. The dishwasher of claim 1, whereinthe inlet duct and the outlet duct extend along an outer surface of the tub.

7. The dishwasher of claim 1, whereinthe inlet duct and the outlet duct extend in an up and down direction.

8. The dishwasher of claim 1, further comprising:a sump assembly configured to supply washing water to the washing chamber,wherein the thermoelectric device is positioned behind the sump assembly.

9. The dishwasher of claim 1, further comprising:a base frame forming a machine room partitioned from the washing chamber,wherein the connection duct is mounted in the machine room to a rear side of the base frame.

10. The dishwasher of claim 1, whereinthe thermoelectric device includes:a thermoelectric element having one side of the thermoelectric element in contact with the cooling portion and another side of the thermoelectric element in contact with the heating portion, andthe connection duct includes:a duct body to which the thermoelectric element is mounted,a first cover coupled to one side of the duct body to form a cooling flow path for air to flow into the connection duct where air is cooled by the cooling portion, anda second cover coupled to another side of the duct body to form a heating flow path where the air cooled by the cooling portion is heated by the heating portion.

11. The dishwasher of claim 10, wherein the cooling flow path and the heating flow path extend in a left and right direction.

12. The dishwasher of claim 1,wherein the thermoelectric device is operable to cause air to be cooled by the cooling portion and air to be heated by the heating portion, andthe dishwasher further comprises:a controller configured to:operate the thermoelectric device while the washing chamber is at a predetermined temperature or less, andstop operating the thermoelectric device while the washing chamber is at a temperature exceeding the predetermined temperature.

13. The dishwasher of claim 1, further comprising:a water tank in which washing water is storable, and from which washing water stored in the water tank is suppliable to the washing chamber,wherein the inlet duct and the outlet duct are in the water tank.

14. The dishwasher of claim 13, further comprising:a fan device mounted on the water tank, the fan device configured to cause air in the tub to be discharged from the tub into the inlet duct to flow through the inlet duct.

15. An appliance comprising:a main body;a receiving space formed inside the main body from which air is dischargeable;an inlet duct;a connection duct;an outlet duct;a thermoelectric device under the receiving space and inside the connection duct, the thermoelectric device including:a cooling portion configured to cool air, anda heating portion configured to heat air,whereinthe thermoelectric device is operable to cause air to be cooled by the cooling portion and air to be heated by the heating portion, andthe inlet duct, the connection duct, the outlet duct, and the thermoelectric device are configured so that air discharged from the receiving space flows through the inlet duct to the connection duct where the air is cooled by the cooling portion so that moisture is removed from the air and then the air cooled by the cooling portion is heated by the heating portion, and then the air heated by the heating portion flows into the outlet duct to be discharged into the receiving space; anda controller configured to:operate the thermoelectric device while the receiving space is at a predetermined temperature or less, andstop operating the thermoelectric device while the receiving space is at a temperature exceeding the predetermined temperature.

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