Clothes treating apparatus and method for controlling same

Abstract

This clothes treating apparatus comprises: a tub; a drum rotatably provided in the tub; a drying device including a heat pump and a fan for supplying heated air to the inside of the tub; and a control unit that rotates the drum at a preset maximum speed for a preset time on the basis of a start of a dehydration operation and operates the fan to blow air into the tub while the drum rotates at the preset maximum speed.

Description

Garment treatment device and method for controlling the garment treatment device

[0001] The present disclosure relates to a garment treatment device including a drying device and a method for controlling the garment treatment device.

[0002] A garment treatment device is a device for treating and / or managing garments. The garment treatment device may include a washing machine and a dryer. The washing machine may include a combined washing machine and dryer.

[0003] A washing machine with a dryer is a device that uses the driving force of a motor to mix laundry, water, and detergent inside a tub together, thereby washing through friction between them.

[0004] The cycles performed by a washing machine with a dryer may include a washing cycle in which detergent and water are supplied to a tub containing laundry and the drum is rotated to wash the laundry, a rinsing cycle in which water is supplied to the tub and the drum is rotated to rinse the laundry, and a dehydration cycle in which water is discharged from the tub and the drum is rotated to remove moisture from the laundry.

[0005] The cycle performed by a washing machine with a dryer may include a drying cycle in which heat generated by a drying device is blown into a space containing laundry to dry laundry. The washing machine with a dryer may include a drying device to perform the drying cycle.

[0006] The present disclosure provides a garment treatment device with improved dehydration performance and a method for controlling the garment treatment device.

[0007] The present disclosure provides a garment treatment device that suppresses foam generation and a method for controlling the garment treatment device.

[0008] The present disclosure provides a garment treatment device for removing foam generated in a rinsing cycle and a method for controlling the garment treatment device.

[0009] The technical problems to be achieved in this document are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0010] A garment treatment device according to one embodiment of the present disclosure comprises: a tub; a drum rotatably provided within the tub; a drying device including a heat pump and a fan for supplying heated air into the interior of the tub; and a control unit for rotating the drum at a preset maximum speed for a preset time based on the start of a dehydration cycle and operating the fan to blow air into the interior of the tub while the drum rotates at the preset maximum speed.

[0011] A method for controlling a garment treatment device according to one embodiment of the present disclosure includes: rotating the drum at a preset maximum speed for a preset time based on the start of a dehydration cycle; and operating the fan to blow air into the interior of the tub while the drum rotates at the preset maximum speed.

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

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

[0014] FIG. 3 illustrates a part of a configuration arranged inside a garment treatment device according to one embodiment of the present disclosure.

[0015] FIG. 4 illustrates a configuration arranged inside a garment treatment device according to one embodiment of the present disclosure from a different direction than that illustrated in FIG. 3.

[0016] FIG. 5 is an exploded view showing a part of a drying device according to one embodiment of the present disclosure.

[0017] FIG. 6 illustrates a part of a configuration related to water supply of a garment treatment device according to one embodiment of the present disclosure.

[0018] FIG. 7 is a block diagram illustrating an example of configurations of a garment treatment device according to one embodiment of the present disclosure.

[0019] FIG. 8 is a flowchart illustrating an example of operations performed by a garment treatment device according to one embodiment of the present disclosure.

[0020] FIG. 9 is a flowchart illustrating an example of a method for controlling a garment treatment device according to one embodiment of the present disclosure.

[0021] FIG. 10 illustrates an example of a dehydration operation profile of a garment treatment device according to one embodiment of the present disclosure.

[0022] FIG. 11 is a flowchart illustrating a specific example of a control method for a garment treatment device according to one embodiment of the present disclosure.

[0023] FIG. 12 illustrates an example of a fan turning on in a dehydration cycle of a garment treatment device according to one embodiment of the present disclosure.

[0024] FIG. 13 illustrates another example of the on point of the fan in the dehydration cycle of the garment treatment device according to one embodiment of the present disclosure.

[0025] FIG. 14 illustrates another example of the on point of the fan in the dehydration cycle of the garment treatment device according to one embodiment of the present disclosure.

[0026] FIG. 15 illustrates another example of the on point of a fan in a dehydration cycle of a garment treatment device according to one embodiment of the present disclosure.

[0027] Figure 16 schematically illustrates the flow of air in the dehydration process of a garment treatment device according to one embodiment of the present disclosure.

[0028] Before beginning the detailed explanation below, definitions of certain words and phrases used throughout this patent document are provided. The terms "comprise" and "includes" and their derivatives mean including without limitation. The term "or" is inclusive and can mean "and / or." The phrases "associated" and "associated with" and their derivatives can mean include, be included, interconnect, include, be included, connect or together, combine or together, communicate with, cooperate, intervene, juxtapose, proximate, combine or together, have, have properties, or the like. The term "control unit" means any device, system, or portion thereof that controls at least one operation, and such device may be implemented in hardware, firmware, or software, or a combination of both. The functions associated with a particular control unit may be centralized or distributed, either locally or remotely.

[0029] Additionally, the various functions described below may be implemented or supported by one or more computer programs, each of which may be formed of computer-readable program code and implemented on a computer-readable medium. The terms "application" and "program" refer to one or more computer programs, software components, instruction sets, procedures, functions, objects, classes, instances, related data, or portions thereof adapted to be implemented in suitable computer-readable program code. The phrase "computer-readable program code" may include any type of computer code, including source code, object code, and executable code. The phrase "computer-readable medium" may include any type of computer-accessible media, such as read-only memory (ROM), random access memory (RAM), hard disk drives, compact discs (CDs), digital video discs (DVDs), or any other type of memory. "Non-transitory" computer-readable media excludes wired, wireless, optical, or other communications links that transmit transitory electrical or other signals. Non-transitory computer-readable media can include media that can permanently store data and media that can store data and then be overwritten (e.g., a rewritable optical disc or an erasable memory device).

[0030] Definitions of certain words and phrases are provided throughout this patent document, and those skilled in the art should understand that, in most cases, these definitions apply to prior and future uses of such defined words and phrases.

[0031] The various embodiments used to illustrate the principles of this disclosure, as discussed below in Figures 1 through 16 and in this patent document, are merely illustrative and should not be construed as limiting the scope of this disclosure. Those skilled in the art will appreciate that the principles of this disclosure can be implemented in any appropriately arranged system or device.

[0032] It should be understood that the various embodiments and terms used in this document are not intended to limit the technical features described in this document to specific embodiments, but rather to include various modifications, equivalents, or substitutes of the embodiments.

[0033] In connection with the description of the drawings, similar reference numerals may be used for similar or related components.

[0034] The singular form of a noun corresponding to an item may include one or more of said items, unless the relevant context clearly indicates otherwise.

[0035] In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" may include any one of the items listed together in that phrase, or all possible combinations thereof.

[0036] The term “and / or” includes any combination of a plurality of related described elements or any one of a plurality of related described elements.

[0037] Terms such as "first," "second," or "first" or "second" may be used simply to distinguish one component from another and do not qualify the components in any other respect (e.g., importance or order).

[0038] When a component (e.g., a first component) is referred to as being "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0039] The terms “include” or “have” are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in this document, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0040] When a component is said to be “connected,” “coupled,” “supported,” or “in contact with” another component, this includes not only cases where the components are directly connected, coupled, supported, or in contact, but also cases where the components are indirectly connected, coupled, supported, or in contact through a third component.

[0041] When we say that a component is "on" another component, this includes not only cases where the component is in contact with the other component, but also cases where there is another component between the two components.

[0042] Washing machines according to various embodiments can perform washing, rinsing, spin-drying, and drying processes. A washing machine is an example of a clothing treatment device, and the term "clothing treatment device" encompasses devices that wash clothing (laundry items, drying items), devices that dry clothing, and devices that can perform both washing and drying of clothing.

[0043] Washing machines according to various embodiments may include top-loading washing machines in which the laundry inlet for loading or removing laundry is provided facing upward, or front-loading washing machines in which the laundry inlet is provided facing forward. Washing machines according to various embodiments may include washing machines of other loading methods other than top-loading washing machines and front-loading washing machines.

[0044] In the case of a top-loading washing machine, laundry can be washed using a water current generated by a rotating body such as a pulsator. In the case of a front-loading washing machine, laundry can be washed by rotating the drum to repeatedly raise and lower the laundry. The front-loading washing machine may include a washing machine with a dryer that can dry the laundry contained inside the drum. The washing machine with a dryer may include a hot air supply device for supplying high-temperature air into the drum and a condensing device for removing moisture from the air discharged from the drum. For example, the washing machine with a dryer may include a heat pump device. The washing machine according to various embodiments may include a washing machine with a washing method other than the washing method described above.

[0045] Washing machines according to various embodiments may include a housing that accommodates various components therein. The housing may be provided in the form of a box with a laundry inlet formed on one side.

[0046] A washing machine may include a door for opening and closing the laundry compartment. The door may be rotatably mounted to the housing by a hinge. At least a portion of the door may be transparent or translucent to allow the interior of the housing to be viewed.

[0047] A washing machine may include a tub provided within a housing to store water. The tub may be provided in a generally cylindrical shape with a tub opening formed on one side, and may be positioned within the housing such that the tub opening corresponds to a laundry inlet.

[0048] The tub may be connected to the housing by a damper. The damper can absorb vibrations generated when the drum rotates, thereby reducing the vibrations transmitted to the housing.

[0049] A washing machine may include a drum configured to accommodate laundry.

[0050] The drum may be positioned within the tub such that the drum opening provided on one side corresponds to the laundry inlet and the tub opening. Laundry may be sequentially passed through the laundry inlet, the tub opening, and the drum opening to be accommodated within the drum or taken out from the drum.

[0051] The drum rotates within the tub and can perform washing, rinsing, and / or spin-drying operations. The cylindrical wall of the drum is formed with a number of perforations, allowing water stored in the tub to flow into or out of the drum.

[0052] A washing machine may include a drive device configured to rotate a drum. The drive device may include a drive motor and a rotating shaft for transmitting driving force generated by the drive motor to the drum. The rotating shaft may be connected to the drum by penetrating the tub.

[0053] The driving device can rotate the drum forward or backward to perform each operation according to the washing, rinsing, and / or dehydration, or drying cycle.

[0054] A washing machine may include a water supply device configured to supply water to a tub. The water supply device may include a water supply pipe and a water supply valve provided on the water supply pipe. The water supply pipe may be connected to an external water source. The water supply pipe may extend from the external water source to a detergent supply device and / or the tub. Water may be supplied to the tub via the detergent supply device. Water may be supplied to the tub without passing through the detergent supply device.

[0055] The water supply valve can open or close the water supply pipe in response to an electrical signal from the control unit. The water supply valve can allow or block the supply of water to the tub from an external water source. The water supply valve may include, for example, a solenoid valve that opens and closes in response to an electrical signal.

[0056] A washing machine may include a detergent supply device configured to supply detergent to a tub. The detergent supply device may include a manual detergent supply device that requires a user to add detergent for each wash cycle, and an automatic detergent supply device that stores a large amount of detergent and automatically supplies a predetermined amount of detergent during a wash cycle. The detergent supply device may include a detergent compartment for storing detergent. The detergent supply device may be configured to supply detergent into the tub during a water supply process. Water supplied through a water supply pipe may be mixed with detergent via the detergent supply device. The water mixed with detergent may be supplied into the tub. Detergent is used as a comprehensive term for pre-wash detergent, main wash detergent, fabric softener, bleach, etc., and the detergent compartment may be divided into a pre-wash detergent storage area, a main wash detergent storage area, a fabric softener storage area, and a bleach storage area.

[0057] A washing machine may include a drainage device configured to discharge water contained in a tub to the outside. The drainage device may include a drain pipe extending from the bottom of the tub to the outside of the housing, a drain valve provided in the drain pipe to open and close the drain pipe, and a pump provided on the drain pipe. The pump may pump water in the drain pipe to the outside of the housing.

[0058] The washing machine may include a control panel positioned on one side of the housing. The control panel may provide a user interface for a user to interact with the washing machine. The user interface may include at least one input interface and at least one output interface.

[0059] At least one input interface can convert sensory information received from a user into an electrical signal. The at least one input interface can include a power button, an operation button, a course selection dial (or a course selection button), and a wash / rinse / spin setting button. The at least one input interface can include, for example, a tact switch, a push switch, a slide switch, a toggle switch, a micro switch, a touch switch, a touch pad, a touch screen, a jog dial, and / or a microphone.

[0060] At least one output interface can visually or audibly convey information related to the operation of the washing machine to the user. For example, at least one output interface can convey information related to the washing cycle, the operating time of the washing machine, and the washing / rinsing / spin settings to the user. Information related to the operation of the washing machine can be output via a screen, an indicator, voice, etc. At least one output interface can include, for example, a liquid crystal display (LCD) panel, a light emitting diode (LED) panel, a speaker, etc.

[0061] The washing machine may include a communication module for communicating with external devices via wires and / or wirelessly.

[0062] The communication module may include at least one of a short-range communication module or a long-range communication module.

[0063] The communication module can transmit data to or receive data from external devices (e.g., a server, a user device, and / or a home appliance). For example, the communication module can establish communication with a server, a user device, and / or a home appliance, and transmit and receive various data.

[0064] To this end, the communication module may support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between external devices, and the performance of communication through the established communication channel. According to one embodiment, the communication module 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). Any of these communication modules may communicate with the external device via a first network (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network (e.g., a long-range communication network such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)). These various types of communication modules may be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips).

[0065] The short-range wireless communication module may include, but is not limited to, a Bluetooth communication module, a BLE (Bluetooth Low Energy) communication module, a near field communication module, a WLAN (Wi-Fi) communication module, a Zigbee communication module, an infrared (IrDA, infrared Data Association) communication module, a WFD (Wi-Fi Direct) communication module, an UWB (ultrawideband) communication module, an Ant+ communication module, a microwave (uWave) communication module, etc.

[0066] The long-distance communication module may include a communication module that performs various types of long-distance communication and may include a mobile communication unit. The mobile communication unit transmits and receives wireless signals with at least one of a base station, an external terminal, and a server on a mobile communication network.

[0067] In one embodiment, the communication module can communicate with external devices such as a server, a user device, and other home appliances through a peripheral access point (AP). The access point (AP) can connect a local area network (LAN) to which the washing machine or the user device is connected to a wide area network (WAN) to which the server is connected. The washing machine or the user device can be connected to the server through the wide area network (WAN). The control unit can control various components of the washing machine, such as a drive motor and a water inlet valve. The control unit can control various components of the washing machine to perform at least one cycle, including water supply, washing, rinsing, and / or spin-drying, according to a user input. For example, the control unit can control the drive motor to adjust the rotation speed of the drum, or control the water inlet valve of the water supply device to supply water to the tub.

[0068] The control unit may include hardware such as a CPU or memory, and software such as a control program. For example, the control unit may include an algorithm for controlling the operation of components within the washing machine, at least one memory storing program-type data, and at least one processor performing the aforementioned operation using data stored in the at least one memory. The memory and the processor may each be implemented as separate chips. The processor may include one or more processor chips or one or more processing cores. The memory may include one or more memory chips or one or more memory blocks. Additionally, the memory and the processor may be implemented as a single chip.

[0069] Hereinafter, various embodiments of a garment treatment device will be specifically described with reference to the attached drawings. While a washing machine / dryer is described as an example of a garment treatment device, the concepts of the present disclosure are not limited to washing machines / dryers, and can be applied to various devices for treating and / or managing garments.

[0070] The terms “front,” “rear,” “left,” and “right” used in the description below are defined based on the drawings, and the shape and position of each component are not limited by these terms.

[0071] For example, the X-axis direction can be defined as the front-back direction, the Y-axis direction can be defined as the left-right direction, and the Z-axis direction can be defined as the up-down direction.

[0072] FIG. 1 illustrates a garment treatment device according to one embodiment of the present disclosure. FIG. 2 illustrates a cross-section of a garment treatment device according to one embodiment of the present disclosure. FIG. 3 illustrates a portion of a component arranged inside a garment treatment device according to one embodiment of the present disclosure. FIG. 4 illustrates a component arranged inside a garment treatment device according to one embodiment of the present disclosure from a different direction than that illustrated in FIG. 3. FIG. 5 illustrates an exploded view of a portion of a drying device according to one embodiment of the present disclosure.

[0073] Referring to FIGS. 1 to 5, a garment treatment device (1) according to various embodiments may include a housing (10) that accommodates various components therein. The housing (10) may be provided in the form of a box with a laundry inlet (11) formed on one side. The laundry inlet (11) may be provided to face approximately forward.

[0074] The garment treatment device (1) may include a laundry door (17) for opening and closing the laundry inlet (11). The laundry door (17) may be rotatably mounted to the housing (10) by a hinge. At least a portion of the laundry door (17) may be transparent or translucent so as to allow the interior of the housing (10) to be visible. For example, the laundry door (17) may include tempered glass.

[0075] The garment treatment device (1) may include a lower door (18) configured to allow access to a lower detergent supply device (60). The garment treatment device (1) may include an upper door (19) configured to allow access to an upper detergent supply device (50) and a filter (95).

[0076] The clothing treatment device (1) may include a tub (20) provided inside the housing (10) to store water. The tub (20) is provided in a roughly cylindrical shape with a tub opening (21) formed on one side, and may be arranged inside the housing (10) so that the tub opening (21) corresponds to the laundry inlet (11). The tub opening (21) may be provided to face approximately forward. The laundry door (17) may open or close the tub opening (21).

[0077] The tub (20) can be connected to the housing (10) by a damper (25). The damper (25) can absorb vibrations generated when the drum (30) rotates and attenuate vibrations transmitted to the housing (10).

[0078] A clothing treatment device (1) may include a drum (30) configured to accommodate laundry. At least one lifter (33) may be provided inside the drum (30) to perform washing by raising and lowering laundry.

[0079] The drum (30) may be placed inside the tub (20) such that the drum opening (31) provided on one side corresponds to the laundry inlet (11) and the tub opening (21). Laundry may pass through the laundry inlet (11), the tub opening (21) and the drum opening (31) in sequence to be accommodated inside the drum (30) or taken out from the drum (30). The drum opening (31) may be provided to face approximately forward.

[0080] The drum (30) can perform each operation according to the washing, rinsing, and / or dehydration cycle while rotating inside the tub (20). A plurality of holes (32) are formed in the cylindrical wall of the drum (30), so that water stored in the tub (20) can flow into the inside of the drum (30) or flow out from the outside of the drum (30).

[0081] The garment treatment device (1) may include a driving device (36) configured to rotate a drum (30). The driving device (36) may include a driving motor (36a) and a rotating shaft for transmitting driving force generated by the driving motor (36a) to the drum (30). The rotating shaft may pass through the tub (20) and be connected to the drum (30).

[0082] The driving device (36) can rotate the drum (30) forward or backward to perform each operation according to the washing, rinsing, and / or dehydration, or drying cycle.

[0083] The clothing treatment device (1) may include a water supply device (40). The water supply device (40) may include water supply valves (41, 42) that can be connected to an external water source. For example, the water supply valves (41, 42) may include a first water supply valve (41) for supplying hot water and a second water supply valve (42) for supplying cold water. The first water supply valve (41) may be referred to as a hot water valve. The second water supply valve (42) may be referred to as a cold water valve.

[0084] The water supply device (40) may include a water supply valve (41, 42) and a water supply pipe (43, 44). The water supply pipe (43, 44) may be provided as a flexible material hose, a plastic pipe, or a metal pipe. The water supply pipe (43, 44) may be connected to the water supply valve (41, 42). For example, the water supply pipe (43, 44) may include a first water supply pipe (43) connected to a first water supply valve (41), and a second water supply pipe (44) connected to a second water supply valve (42). The first water supply pipe (43) may be referred to as a hot water pipe. The second water supply pipe (44) may be referred to as a cold water pipe.

[0085] At least one of the water supply pipes (43, 44) can guide water from the water supply valve (41, 42) to the tub (20). At least one of the water supply pipes (43, 44) can extend from the water supply valve (42) to the tub (20). Water can be supplied to the lower detergent supply device (60) via the tub (20). Water can also be supplied to the lower detergent supply device (60) without passing through the tub (20).

[0086] The water supply valves (41, 42) can open or close the water supply pipes (43, 44). The water supply valves (41, 42) can allow or block the supply of water from an external water source to the tub (20). For example, the water supply valves (41, 42) may include solenoid valves that open and close in response to an electrical signal.

[0087] The garment treatment device (1) may include a detergent supply device (50, 60) configured to supply detergent to the tub (20). The detergent supply device (50, 60) may include an upper detergent supply device (50) and a lower detergent supply device (60). The term "detergent" may be used as a comprehensive term for pre-wash detergent, main wash detergent, fabric softener, bleach, etc.

[0088] The upper detergent supply device (50) may be located at the upper part of the tub (20). The upper detergent supply device (50) may be located above the tub (20) in the vertical direction. The upper detergent supply device (50) may include a manual detergent supply device that requires the user to add detergent for each wash, or an automatic detergent supply device that stores a large amount of detergent and automatically adds a predetermined amount of detergent during the wash. The upper detergent supply device (50) may be connected to the tub (20) via a detergent connection pipe (51). For example, the upper detergent supply device (50) may be configured to supply solid detergent and / or fabric softener to the tub (20). However, the type of detergent is not limited to the above-described examples.

[0089] The detergent connecting pipe (51) may be provided in a U shape. The detergent connecting pipe (51) may be provided as a flexible hose, plastic pipe, or metal pipe. One end of the detergent connecting pipe (51) may be connected to the upper detergent supply device (50), and the other end of the detergent connecting pipe (51) may be connected to the tub (20). In the vertical direction with respect to the ground, one end and the other end of the detergent connecting pipe (51) may be located higher than the bent portion of the detergent connecting pipe (51). Therefore, water may accumulate at the bent portion of the detergent connecting pipe (51). The water accumulated at the bent portion of the detergent connecting pipe (51) may prevent moisture inside the tub (20) from being discharged to the outside through the upper detergent supply device (50).

[0090] The lower detergent supply device (60) may be located at the bottom of the tub (20). The lower detergent supply device (60) may be located vertically lower than the tub (20). The lower detergent supply device (60) may include a manual detergent supply device that requires the user to add detergent for each wash, or an automatic detergent supply device that stores a large amount of detergent and automatically adds a predetermined amount of detergent during the wash. For example, the lower detergent supply device (60) may be provided to supply liquid detergent and / or fabric softener to the tub (20). The type of detergent is not limited to the above-described examples.

[0091] The clothing treatment device (1) may include a drainage device (70) configured to discharge water contained in the tub (20) to the outside. The drainage device (70) may include a drainage pump (71) for discharging water in the tub (20) to the outside of the housing (10).

[0092] The clothing treatment device (1) may include a circulation pump (76) for circulating water in the tub (20) back into the tub (20).

[0093] In one embodiment, the circulation pump (76) can circulate water from the tub (20) through the lower detergent supply device (60) and back into the tub (20).

[0094] The circulation pump (76) may be directly connected to the tub (20) via the tub connection pipe (72), or may be connected to the tub (20) via the tub connection pipe (72) and the lower detergent supply device (60).

[0095] The circulation pump (76) may include a circulation path for discharging water supplied from the tub (20) through the tub connection pipe (72) back to the tub (20). The circulation path may be formed by a circulation pipe (77).

[0096] The circulation pipe (77) can guide water pumped by the circulation pump (76) to the upper side of the tub (20).

[0097] The upper side of the tub (20) may mean a position having a predetermined height from the bottom surface of the tub (20).

[0098] The circulation pipe (77) can guide water pumped by the circulation pump (76) into the interior of the drum (30). That is, the circulation path can guide water stored in the tub (20) into the interior of the drum (30).

[0099] A circulation valve (77v) may be placed in the circulation path formed by the circulation pipe (77). The circulation valve (77v) may open and close the circulation path formed by the circulation pipe (77).

[0100] When the circulation pump (76) operates with the circulation valve (77v) open, water stored on the bottom of the tub (20) moves to the circulation path through the tub connection pipe (72), and as a result, can fall into the interior of the drum (30).

[0101] The circulation pump (76) can operate during the washing cycle and / or the rinsing cycle, etc., and when the circulation pump (76) operates during the washing cycle and / or the rinsing cycle, etc., water falls on the laundry contained in the drum (30), thereby increasing the washing efficiency and / or the rinsing efficiency.

[0102] In the present disclosure, the term 'tube' may be referred to as a 'guide' in terms of guiding a fluid, or may be replaced with a term such as a 'hose'.

[0103] The drainage device (70) can be connected to the tub (20) through a tub connection pipe (72). The drainage device (70) can discharge water from the tub (20) to the outside of the housing (10) through a drain pipe (73).

[0104] The garment treatment device (1) may include a water level sensor (200) that detects the water level within the tub (20). The water level sensor (200) may be located outside the tub (20). For example, the water level sensor (200) may be installed at the bottom of the upper detergent supply device (50). The location of the water level sensor (200) is not limited to the example.

[0105] The water level sensor (200) can be connected to a connecting hose (201) extending from a branch pipe (72a) of a tub connecting pipe (72). The water level sensor (200) can be installed at the end of the connecting hose (201) connected to the tub connecting pipe (72). The water level of the connecting hose (201) can be the same as the water level of the tub (20).

[0106] When the water level in the tub (20) rises, the water level in the connecting hose (201) rises. When the water level in the connecting hose (201) rises, the pressure inside the connecting hose (201) may increase. The water level sensor (200) can detect a change in pressure inside the connecting hose (201) and can detect a water level inside the tub (20) corresponding to the pressure inside the connecting hose (201). The water level sensor (200) can generate an electrical signal corresponding to the pressure inside the connecting hose (201). The frequency of the electrical signal generated by the water level sensor (200) may vary depending on the change in pressure inside the connecting hose (201).

[0107] As another example, the water level sensor (200) may be installed inside the tub (20). As the water level inside the tub (20) rises, the pressure applied to the water level sensor (200) increases. The water level sensor (200) can detect the water level inside the tub (20) corresponding to the pressure.

[0108] The garment treatment device (1) may include a control panel (100) arranged on one side of the housing (10). The control panel (100) may provide a user interface for interaction between a user and the garment treatment device (1). The user interface may include at least one input interface (101) and at least one output interface (102).

[0109] For example, at least one input interface (101) can convert sensory information received from a user into an electrical signal. At least one input interface (101) can include a power button, an operation button, a course selection dial (or a course selection button), and a wash / rinse / spin setting button. At least one input interface (101) can include a tact switch, a push switch, a slide switch, a toggle switch, a micro switch, a touch switch, a touch pad, a touch screen, a jog dial, and / or a microphone.

[0110] At least one output interface (102) can visually or audibly convey information related to the operation of the garment treatment device (1) to the user. For example, at least one output interface (102) can convey information related to the washing course, the operating time of the garment treatment device (1), and the washing / rinsing / spin-drying settings to the user. Information related to the operation of the garment treatment device (1) can be output through a screen, an indicator, a voice, etc. At least one output interface (102) can include a liquid crystal display (LCD) panel, a light emitting diode (LED) panel, a speaker, etc.

[0111] The clothing treatment device (1) may include a drying device (80) for drying laundry accommodated inside the drum (30). The drying device (80) may be configured to heat air and supply it to the inside of the tub (20). The drying device (80) may be configured to dry and heat air discharged from the tub (20) and circulate the dried and heated air into the inside of the tub (20) to dry clothing inside the drum (30). The drying device (80) according to various embodiments may be arranged on top of the tub (20).

[0112] The drying device (80) may include a drying case (81). The drying case (81) may include a drying base (81a) and a drying cover (81b) that is coupled to the drying base (81a) to form a path through which air can move. The drying cover (81b) may cover the open upper surface of the drying base (81a).

[0113] Referring to FIG. 5, as an example, the drying device (80) may include a rear cover (81c) that can be coupled to the rear side of the drying base (81a). The rear cover (81c) may form at least a portion of the rear of the drying device (80). A water supply valve (41, 42) may be mounted on the rear cover (81c).

[0114] The drying device (80) may be provided in a heat pump manner. The drying device (80) may include a fan (87a), a compressor (91), a condenser (92), an evaporator (93), an expansion valve, and a refrigerant pipe (94) through which refrigerant circulates. The compressor (91), the condenser (92), the evaporator (93), and the expansion valve, which constitute the heat pump, may be arranged in a drying case (81). In addition, the drying device (80) may further include a cooling fan (91a) for cooling the compressor (91). For example, the drying device (80) may be formed as a single module.

[0115] The compressor (91), condenser (92), evaporator (93), expansion valve, and refrigerant pipe (94) through which refrigerant circulates of the drying device (80) may be referred to as a heat pump.

[0116] The heat pump can dry and / or heat the air supplied to the interior of the tub (20).

[0117] The fan (87a) can blow air into the interior of the tub (20).

[0118] That is, the heat pump can heat the air supplied to the interior of the tub (20) by the fan (87a).

[0119] The compressor (91) compresses the refrigerant, and the compressed high-temperature, high-pressure refrigerant can move to the condenser (92). The condenser (92) can cool the refrigerant and heat the surrounding air. The heated air can be introduced into the drum (30) to dry clothes.

[0120] The refrigerant expanded through the expansion valve can absorb heat in the evaporator (93) and cool the surrounding air. That is, the evaporator (93) can cool the high-temperature, humid air that has passed through the inside of the drum (30) to remove moisture. The air from which moisture has been removed passes through the condenser (92) and can be heated again while exchanging heat with the refrigerant passing through the condenser (92). That is, the condenser (92) can heat the air that has passed through the evaporator (93). The condenser (92) and the evaporator (93) correspond to heat exchangers. The condenser (92) may be referred to as a 'first heat exchanger'. The evaporator (93) may be referred to as a 'second heat exchanger'.

[0121] For example, the drying device (80) may further include a drying heater (99). The drying heater (99) may increase the drying efficiency of the drying device (80). The heat pump components of the drying device (80) may also be replaced with the drying heater (99).

[0122] The drying heater (99) can heat the air flowing into the drying device (80). The drying heater (99) can be placed in the heating path (86). The drying heater (99) can be placed downstream from the condenser (92) along the air flow passing through the drying device (80). In addition, the drying heater (99) can be provided in a relatively small size so as to minimize the resistance of the path. For example, the drying heater (99) can be a sheath heater.

[0123] In the present disclosure, not operating the heat pump during the dehydration process (1030) may include not operating the drying heater (99) during the dehydration process (1030).

[0124] According to one embodiment of the present disclosure, the heat pump can be operated during the drying cycle (1040).

[0125] A drying device (80) according to various embodiments may be placed on the upper side of the tub (20). An inlet passage (85) through which air discharged from the tub (20) flows may be formed in the drying device (80). A heating passage (86) may be formed in the drying device (80) for heat exchange with air flowing into the drying device (80) through the inlet passage (85). A supply passage (87) may be formed in the drying device (80) for supplying air that has passed through the heating passage (86) and has undergone heat exchange to the tub (20).

[0126] An inlet passage (85) may be provided so that air passing through the interior of the tub (20) may be introduced into the drying device (80). The inlet passage (85) may be located on the upper side of the tub (20). The inlet passage (85) may be connected to an exhaust passage (P) formed at the rear of the tub (20).

[0127] The drying device (80) may include an inlet guide (84) connected to the tub (20). The inlet guide (84) may guide air discharged from the tub (20) to an inlet passage (85). The inlet passage (85) may be communicated with an exhaust passage (P) formed in the tub (20) through the inlet guide (84). Air passing through the exhaust passage (P) may be introduced into the inlet passage (85) of the drying device (80) through the inlet guide (84).

[0128] A filter (95) may be provided in the inlet passage (85) to filter out foreign substances such as lint contained in the air flowing in through the exhaust passage (P) from the tub (20). The air flowing in through the inlet passage (85) may pass through the filter (95) and then move to the heating passage (86). The filter (95) may be located on the passage through which the air flowing into the drying device (80) moves to the evaporator (93) and the condenser (92).

[0129] A heat exchanger (92, 93) may be arranged in the heating passage (86). The heat exchanger (92, 93) may include a condenser (92) and an evaporator (93). The air flowing into the heating passage (86) may be humid because it has passed through the interior of the tub (20). The humid air may be cooled in the evaporator (93) arranged in the heating passage (86) to remove moisture. The air from which moisture has been removed in the evaporator (93) may be reheated by passing through the condenser (92).

[0130] The drying device (80) may include a nozzle device (96) for cleaning the heat exchanger (92, 93). The nozzle device (96) may be provided in the heating passage (86). The nozzle device (96) may receive water from the water supply device (40) and spray water toward the heat exchanger (92, 93). The water sprayed from the nozzle device (96) may clean one side of the heat exchanger (92, 93).

[0131] Meanwhile, the clothing treatment device (1) may include a drain line (97) for guiding water discharged from the drying device (80) to the tub (20). The drain line (97) may be provided with a flexible hose, plastic pipe, or metal pipe. The drain line (97) may guide condensate generated in the heat exchanger (92, 93) of the drying device (80) to the outside of the drying device (80). The drain line (97) may guide water sprayed by the nozzle device (96) for cleaning the heat exchanger (92, 93) to the outside of the drying device (80).

[0132] The nozzle device (96) may be configured to clean the heat exchanger (92, 93). The nozzle device (96) may be configured to clean the air-inlet portion of the heat exchanger (92, 93). The nozzle device (96) may be configured to clean at least a portion of the evaporator (93). The nozzle device (96) may be configured to clean a portion of the evaporator (93) into which air passing through the filter (95) is introduced. The nozzle device (96) may be configured to clean a portion of the evaporator (93) that is contaminated by air passing through the evaporator (93) and exchanging heat with the evaporator (93). The nozzle device (96) may be positioned adjacent to the air-inlet portion of the evaporator (93).

[0133] The drain line (97) can be connected to the drain device (70). The drain line (97) can be connected to the drain pump (71). Water discharged from the drying device (80) can flow to the drain device (70) along the drain line (97). Water flowing into the drain device (70) through the drain line (97) can be guided to the tub (20). Condensed water flowing into the tub (20) can be discharged to the outside of the clothing treatment device (1) by the operation of the drain pump (71).

[0134] The supply path (87) may be arranged to supply heated air back into the interior of the tub (20) by passing through the condenser (92). The supply path (87) may be connected to the heating path (86) and may extend downward to discharge heated air toward the opening of the tub (20).

[0135] A fan (87a) may be provided in the supply path (87) to cause air to flow into the interior of the tub (20). That is, the fan (87a) may be provided to supply air to the laundry inside the drum (30). For example, the fan (87a) may include a sirocco fan.

[0136] The inlet path (85), the heating path (86), and the supply path (87) can circulate air into the interior of the tub (20) and the drying device (80).

[0137] The clothing treatment device (1) may be arranged so that air discharged from the tub (20) sequentially passes through the inlet path (85), heating path (86), and supply path (87) of the drying device (80) located on the upper side of the tub (20), and then is supplied to the interior of the tub (20).

[0138] Heated air from the drying device (80) can be supplied into the interior of the drum (30). In order to secure an area where the heated air supplied into the interior of the drum (30) comes into contact with the laundry, the tub exhaust port (27) may be provided at a position opposite to the air inlet (26) through which the heated air from the drying device (80) is supplied to the tub (20). In order to increase the distance and / or time that the heated air flows inside the drum (30) so that it can come into more contact with the laundry, the tub exhaust port (27) may be provided at a position opposite to the air inlet (26) through which the heated air from the drying device (80) is supplied to the tub (20). The supply path (87) for supplying the heated air into the interior of the drum (30) and the tub exhaust port (27) may be arranged to be spaced apart from each other. By increasing the area where the heated air comes into contact with the laundry, the drying efficiency can be improved.

[0139] The air inlet (26) and the tub exhaust port (27) can be positioned to maximize the use of heated air provided from the drying device (80). For example, the air inlet (26) can be positioned adjacent to the front of the tub (20), and the tub exhaust port (27) can be positioned adjacent to the rear of the tub (20).

[0140] Referring to FIG. 3, a washing machine according to one embodiment may include a diaphragm (22) connecting a tub opening (21) of a tub (20) and a laundry inlet (11) of a housing (10). The diaphragm (22) may connect the laundry inlet (11) and the tub opening (21). The diaphragm (22) may prevent laundry inserted into the laundry inlet (11) from falling between the housing (10) and the tub (20), and may function to connect the front end of the tub (20) and the housing (10) regardless of vibrations generated during the washing process. For this purpose, the diaphragm (22) may be formed of an elastic material. For example, the diaphragm (22) may include a plastic material such as rubber or TPE (Thermo Plastic Elastomer).

[0141] In a washing machine according to one embodiment, the diaphragm (22) may include a duct portion (22a) that is provided to be connected to a supply duct (87b) forming a supply path (87). The duct portion (22a) may extend upward from a side surface of the diaphragm (22) having a cylindrical shape with both sides open. A path may be formed inside the duct portion (22a) to allow air to flow. The duct portion (22a) may be formed adjacent to the upper end of the diaphragm (22). The duct portion (22a) may be formed integrally with the diaphragm (22) and may have the same material. Alternatively, the duct portion (22a) may be provided separately from the diaphragm (22) and coupled to the diaphragm (22). Additionally, the duct portion (22a) may be provided separately from the diaphragm (22) and the tub (20) and may be coupled to the tub (20). The duct portion (22a) may also be formed integrally with the tub (20). An air inlet (26) may be formed at one end of the duct portion (22a).

[0142] The clothing treatment device (1) according to various embodiments may further include an exhaust path (P) for moving air discharged from the inside of the tub (20) to the drying device (80). The exhaust path (P) may be provided so that air discharged from the tub exhaust port (27) flows to the inlet path (85) of the drying device (80). The exhaust path (P) may be provided so as to discharge moist air that has passed through the tub (20). For example, the exhaust path (P) may be provided at the rear of the tub (20).

[0143] The air inside the tub (20) can be discharged to the tub duct (28) through the tub exhaust port (27) formed at the rear of the tub (20). The air discharged to the tub duct (28) can flow along the exhaust path (P) and be supplied to the drying device (80).

[0144] The garment treatment device (1) according to various embodiments may include a tub duct (28) for forming at least a portion of an exhaust path (P). For example, the tub duct (28) may be formed integrally with the tub (20). For example, the tub (20) may include the tub duct (28). The tub duct (28) may be provided to surround the tub exhaust port (27).

[0145] The garment treatment device (1) according to various embodiments may include a duct cover (29) for forming at least a portion of an exhaust path (P). The duct cover (29) may be provided to cover an open rear surface of a tub duct (28). For example, the tub (20) may include the duct cover (29). The duct cover (29) may form at least a portion of an exhaust path (P) through which air discharged through the tub exhaust port (27) flows to the drying device (80).

[0146] According to various embodiments, a clothing treatment device (1) can form an exhaust path (P) by combining a duct cover (29) with a tub duct (28).

[0147] According to one embodiment, a tub duct (28) may include a recessed portion (28a) that forms a portion of an exhaust path (P) through which air discharged from the inside of the tub (20) flows. A reinforcing rib (23) for reinforcing the rigidity of the tub (20) may be provided on the back surface of the tub (20), and the recessed portion (28a) may be provided as a portion that is recessed from an end of the reinforcing rib (23) protruding from the back surface of the tub (20). The recessed portion (28a) may be provided as a portion of the back surface of the tub (20) where the reinforcing rib (23) is not formed. A tub exhaust port (27) for discharging air from the inside of the tub (20) may be formed in the recessed portion (28a). The tub duct (28) may include a partition rib (28d) provided along the periphery of the recessed portion (28a). The partition rib (28d) can separate the area where the reinforcing rib (23) is formed and the area where the recessed portion (28a) is formed on the back surface of the tub (20).

[0148] According to one embodiment, the tub (20) may include a duct connection portion (28b) that forms another portion of the exhaust path (P) through which air passing through the recess portion (28a) flows. The duct connection portion (28b) may protrude radially outward from the outer surface of the tub (20). The duct connection portion (28b) may protrude approximately upward from the outer surface of the tub (20). For example, the duct connection portion (28b) may protrude upward from the rear end of the tub (20). However, the present invention is not limited thereto, and the duct connection portion (28b) may be positioned in various ways depending on the position of the drying device (80).

[0149] The duct connection portion (28b) can connect the inlet guide (84) of the drying device (80) and the tub duct (28). The duct connection portion (28b) can extend the exhaust passage (P) upward. The duct connection portion (28b) can form a portion of the exhaust passage (P) together with the recess portion (28a), the partition rib (28d), and the duct cover (29).

[0150] The duct connection portion (28b) may be formed into a rectangular parallelepiped shape with open upper and rear surfaces. The duct cover (29) may cover the open rear surface of the duct connection portion (28b). The duct cover (29) may be formed to only form one side of the exhaust passage, thereby facilitating the connection and sealing structure.

[0151] The duct cover (29) can cover the tub duct (28) and the duct connection portion (28b). The duct cover (29) can cover an open side of the tub duct (28) and an open rear side of the duct connection portion (28b). An exhaust path (P) can be formed by the duct cover (29) covering the recessed portion (28a) and the duct connection portion (28b). Since the exhaust path (P) is connected to the inlet path (85), air introduced into the exhaust path (P) through the tub exhaust port (27) can move along the exhaust path (P) and be introduced into the drying device (80) through the inlet path (85).

[0152] Although not shown in the drawing, the duct connection portion (28b) may be provided in the shape of a rectangular parallelepiped with only the upper surface through which air is discharged open and the rear surface not open. In this case, the duct cover (29) may only cover the tub duct (28).

[0153] Meanwhile, the duct connection portion (28b) according to one embodiment of the present disclosure may be provided in a configuration included in the tub duct (28). The duct connection portion (28b) of the tub duct (28) according to one embodiment may extend from the recess portion (28a) to the inflow guide (84). The tub duct (28) may be connected to the inflow guide (84) by the duct connection portion (28b). Hereinafter, the duct connection portion (28b) according to one embodiment of the present disclosure may be described in a configuration included in the tub duct (28).

[0154] The tub duct (28) may include a step portion (28c) for expanding the cross-sectional area of ​​the exhaust passage (P). The exhaust passage (P) may be provided so that the width of the portion formed by the duct connection portion (28b) is larger than the width of the portion formed in the recess portion (28a) by the step portion (28c).

[0155] The water supply valves (41, 42) of the clothing treatment device (1) can be positioned by utilizing the space left by this mounting structure. In one embodiment, the water supply valves (41, 42) can be mounted between the inlet guide (84) and the cooling fan (91a). The water supply valves (41, 42) can be located at the center of the rear of the drying device (80). The water supply valves (41, 42) can be located at the rear of the condenser (92). The water supply valves (41, 42) can be located in an area separated from the flow path through which drying air flows. The positions of the water supply valves (41, 42) are not limited to those exemplified.

[0156] The clothing treatment device (1) may include a washing water heater (24). The washing water heater (24) is provided at the lower side of the tub (20) and can heat the washing water during washing. In addition, the water supply device (40) can supply a certain amount of water to the lower side of the tub (20) through the exhaust passage (P) during the drying cycle, and the washing water heater (24) can heat the water supplied into the interior of the tub (20) through the water supply device (40), the exhaust passage (P), and the tub exhaust port (27) to generate steam. That is, the steam generated by the water supply device (40) and the washing water heater (24) can come into contact with the clothing during the drying cycle, thereby preventing wrinkles from forming on the clothing as much as possible.

[0157] That is, the clothing treatment device (1) is a washing / drying combined washing machine, and unlike a conventional dryer, can include a washing water heater (24) for heating washing water, and can generate steam by utilizing the washing water heater (24) and a water supply device (40) for cleaning the exhaust duct (P) to prevent wrinkles from forming on the clothing during the drying cycle.

[0158] FIG. 6 illustrates a part of a configuration related to water supply of a garment treatment device according to one embodiment of the present disclosure.

[0159] Hereinafter, the garment treatment device (1) according to one embodiment of the present disclosure is described as having a second water supply valve (42) connected to an upper detergent supply device (50), a nozzle device (96), and a tub (20), but is not limited thereto. The second water supply valve (42) may be configured to be connected to at least one of the upper detergent supply device (50), the nozzle device (96), and the tub (20). In addition, the first water supply valve (41) may be configured to be connected to at least one of the upper detergent supply device (50), the nozzle device (96), and the tub (20).

[0160] For convenience of explanation, the second water supply valve (42) may be referred to as a 'water supply valve'. The second water supply pipe (44) may be referred to as a 'water supply pipe', and the upper detergent supply device (50) may be referred to as a 'detergent supply device'.

[0161] Referring to FIG. 6, a water supply pipe (44) according to one embodiment of the present disclosure may include a first pipe (441), a second pipe (442), and a third pipe (443). The first pipe (441), the second pipe (442), and the third pipe (443) may be provided as a flexible material hose, a plastic pipe, or a metal pipe. The first pipe (441) may be referred to as a first connecting pipe. The second pipe (442) may be referred to as a second connecting pipe. The third pipe (443) may be referred to as a third connecting pipe.

[0162] The first pipe (441) can connect the water supply valve (42) and the upper detergent supply device (50). The water supply valve (42) can be controlled to supply at least a portion of water provided from an external water source to the upper detergent supply device (50) through the first pipe (441). The first pipe (441) can guide water supplied from the external water source to the water supply valve to the upper detergent supply device (50). The first pipe (441) can form a path for water to flow from the water supply valve (42) to the upper detergent supply device (50).

[0163] The second pipe (442) can connect the water supply valve (42) and the nozzle device (96). The water supply valve (42) can be controlled to supply at least a portion of the water provided from an external water source to the nozzle device (96) through the second pipe (442). The second pipe (442) can guide the water supplied from the external water source to the water supply valve to the nozzle device (96). The second pipe (442) can form a path for water to flow from the water supply valve (42) to the nozzle device (96).

[0164] The third pipe (443) can connect the water supply valve (42) and the tub (20). The water supply valve (42) can be controlled to supply at least a portion of the water provided from an external water source to the tub (20) through the third pipe (443).

[0165] The third pipe (443) can guide water supplied from an external water source toward the drum (30). Guiding water supplied from the external water source toward the drum (30) may include guiding water supplied from the external water source toward laundry contained in the drum (30) and / or guiding water supplied from the external water source toward the laundry door (17).

[0166] For example, the third pipe (443) can guide water supplied from an external water source to the upper front end of the tub (20). The third pipe (443) can form a path for water to flow from the water supply valve (42) to the tub (20). The third pipe (443) can be connected to a portion of the diaphragm (22) to guide water supplied from the external water source toward the laundry door (17). The third pipe (443) can be connected to a portion of the diaphragm (22) adjacent to the air inlet (26).

[0167] In one embodiment, the water supply valve (42) may include a plurality of valves. For example, the water supply valve (42) may include a first valve (42a), a second valve (42b), and a third valve (43c). The first valve (42a) may be connected to a first pipe (441). The second valve (42b) may be connected to a second pipe (442). The third valve (43c) may be connected to a third pipe (443). When the first valve (42a) is opened, water may be supplied to the detergent supply device (50) through the first pipe (441). When the second valve (42b) is opened, water may be supplied to the nozzle device (96) through the second pipe (442). When the third valve (43c) is opened, water may be supplied to the tub (20) through the third pipe (443). The first valve (42a), the second valve (42b), and the third valve (43c) can be controlled by the control unit (300).

[0168] The water supply device (40) can spray water toward the drum (30) by guiding water to the third pipe (443). That is, the water supply device (40) can be configured to spray water toward the drum (30). As described above, spraying water toward the drum (30) can include spraying water toward laundry stored in the drum (30), spraying water toward the laundry door (17), and / or spraying water toward the diaphragm (22).

[0169] In one embodiment, the water supply valve (42) may correspond to a four-way valve. A movable piston assembly may be provided inside the water supply valve (42) to guide water from an external water source to at least one of the first pipe (441), the second pipe (442), and the third pipe (443). That is, a flow diversion structure may be provided inside the water supply valve (42). The water supply valve (42) may be controlled to guide water to at least one of the first pipe (441), the second pipe (442), and the third pipe (443).

[0170] The upper detergent supply device (50) can be connected to the tub (20) through a detergent connection pipe (51). The detergent connection pipe (51) can be provided in a U shape. One end of the detergent connection pipe (51) can be connected to the upper detergent supply device (50), and the other end of the detergent connection pipe (51) can be connected to the tub (20). In the vertical direction with respect to the ground, one end and the other end of the detergent connection pipe (51) can be located higher than the bent portion of the detergent connection pipe (51). Therefore, water can accumulate at the bent portion of the detergent connection pipe (51). The water accumulated at the bent portion of the detergent connection pipe (51) can prevent moisture inside the tub (20) from being discharged to the outside through the upper detergent supply device (50).

[0171] FIG. 7 is a block diagram illustrating an example of configurations of a garment treatment device according to one embodiment of the present disclosure.

[0172] Referring to FIG. 7, the garment treatment device (1) may include a control unit (300). The control unit (300) may be electrically connected to various components and / or devices of the garment treatment device (1) and may control various components and / or devices. For example, the control unit (300) may control the driving device (36), the first water supply valve (41), the second water supply valve (42), the drain pump (71), the circulation pump (76), the drying device (80), and the fan (87a). In addition, the control unit (300) may be electrically connected to a control panel (100), a communication interface (150), and a water level sensor (200). The control unit (300) may control the control panel (100), the communication interface (150), and the water level sensor (200).

[0173] The control unit (300) may include a processor (310) and a memory (320). The memory (320) may include volatile memory (e.g., S-RAM, D-RAM) and non-volatile memory (e.g., ROM, EPROM). The processor (310) and the memory (320) may be implemented as separate chips or as a single chip. In addition, multiple processors and multiple memories may be provided. The processor (310) may process various data and various signals using instructions, data, programs, and / or software stored in the memory (320). The processor (310) may include one core or multiple cores. The processor (310) may generate control signals for controlling components of the garment treatment device (1).

[0174] The control panel (100) can obtain various user inputs and output various information regarding the operation of the garment treatment device (1). The control panel (100) can include an input interface (101) and an output interface (102).

[0175] The control unit (300) can control the operation of the garment treatment device (1) based on user input obtained through the control panel (100). For example, the control unit (300) can turn the garment treatment device (1) on or off based on user input for turning the garment treatment device (1) on or off. The control unit (300) can determine the operation course of the garment treatment device (1) based on user input for setting the operation course of the garment treatment device (1).

[0176] The control unit (300) of the garment treatment device (1) can determine the operation course of the garment treatment device (1) based on user input obtained through the control panel (100) or a user device. The operation course of the garment treatment device (1) can be provided in various ways. For example, the operation course of the garment treatment device (1) can be broadly classified into a washing course, a drying course, and a heat exchanger cleaning course.

[0177] Washing cycles may vary depending on the type of laundry (e.g., clothing, blankets, underwear, etc.) and material (e.g., cotton, wool, nylon, etc.). For example, a washing cycle may include at least one of a standard washing cycle, a heavy-duty washing cycle, a delicates cycle, a blanket cycle, a baby clothes cycle, a towel cycle, a boiling cycle, and an outdoor clothing cycle. Each of the multiple washing cycles may include different washing settings (e.g., washing temperature, number of rinse cycles, spin strength, etc.).

[0178] When one of multiple washing courses is selected via the control panel (100) or an external user device, the control unit (300) can control the garment treatment device (1) to perform a washing process, a rinsing process, and a dehydration process corresponding to the selected washing course. Furthermore, the washing course may include a rinse-dehydration course, a rinsing course, and a dehydration course. The washing courses are not limited to those exemplified.

[0179] Drying cycles may also vary depending on the type of object being dried (e.g., clothing, blankets, underwear, etc.) and material (e.g., cotton, wool, nylon, etc.). For example, a drying cycle may include at least one of standard drying, strong drying, delicate drying, blanket drying, baby clothes drying, towel drying, and outdoor clothing drying. Each of the multiple drying cycles may include different drying settings (e.g., drying temperature, drying time, etc.).

[0180] When one of a plurality of drying courses is selected through the control panel (100) or an external user device, the control unit (300) can control the clothing treatment device (1) to perform a drying process corresponding to the selected drying course. The drying course is not limited to the examples. To perform the drying process corresponding to the drying course, the control unit (300) can operate the drying device (80). That is, the control unit (300) can operate the fan (87a) and the compressor (91) to dry the drying object within the drum (30). In addition, the control unit (300) can further operate the drying heater (99) to perform the drying process.

[0181] When a washing course corresponding to the type and material of laundry is selected, the control unit (300) can automatically select or recommend a drying course corresponding to the selected washing course. Conversely, when a drying course corresponding to the type and material of the object to be dried is selected, the control unit (300) can automatically select or recommend a washing course corresponding to the selected drying course. The control unit (300) can memorize the washing and drying courses selected by the user, and can provide a washing and drying course that integrates the memorized washing and drying courses through the control panel (100) upon the next operation.

[0182] The control unit (300) can control the control panel (100) to output various information regarding the operation of the garment treatment device (1). For example, the control panel (100) can visually and / or audibly output information regarding the operation course, operation time, washing settings, rinsing settings, spin-drying settings, and / or drying settings of the garment treatment device (1). In addition, the control panel (100) can output information regarding abnormal conditions of the garment treatment device (1).

[0183] The communication interface (150) may include various communication circuits for performing wired and / or wireless communication with external devices (e.g., servers, user devices, and / or other home appliances). The user devices may include various electronic devices such as smartphones, laptops, notebooks, smartwatches, stationary tablets, and speakers. User input may be obtained through the user devices as well as the control panel (100).

[0184] The communication interface (150) may include at least one of a short-range communication circuit and a long-range communication circuit. The communication interface (150) may transmit data to an external device or receive data from an external device. For example, the communication interface (150) may support cellular communication, wireless local area network (WLAN), home radio frequency (RF), infrared communication, ultra-wide band (UWB) communication, Wi-Fi, Wi-Fi direct, Bluetooth, AD-HOC, and / or Zigbee. The communication technologies supported by the communication interface (150) are not limited to those exemplified.

[0185] The communication interface (150) can also communicate with external devices via an access point (AP). The access point can connect the local area network (LAN) to which the garment treatment device (1) is connected to a wide area network (WAN) to which the server is connected. The garment treatment device (1) can be connected to the server via the wide area network (WAN).

[0186] The garment treatment device (1) can be connected to other home appliances and / or electronic devices via a communication interface (150). The garment treatment device (1) can transmit information related to the operation of the garment treatment device (1) (e.g., information related to a washing process and / or a drying process) to the other home appliances and / or electronic devices. Selection of a washing process and / or a drying process can be performed not only on the control panel (100) but also on other home appliances and / or electronic devices. In addition, information regarding the garment treatment device (1) can also be displayed not only on the control panel (100) but also on other home appliances and / or electronic devices.

[0187] The water level sensor (200) can detect the water level within the tub (20). The water level sensor (200) can transmit an electrical signal corresponding to the water level within the tub (20) to the control unit (300). The control unit (300) can determine the water level within the tub (20) based on the signal transmitted from the water level sensor (200). The control unit (300) can determine the water level within the tub (20) based on the frequency value of the signal transmitted from the water level sensor (200).

[0188] The driving device (36) can rotate the drum (30) under the control of the control unit (300). The driving device (36) can include a driving motor (36a). The control unit (300) can control the driving motor (36a) to adjust the rotation speed of the drum (30).

[0189] In the present disclosure, the control unit (300) controlling the drum (30) may include the control unit (300) controlling the drive motor (36a).

[0190] The water supply device (40) of the clothing treatment device (1) may include a first water supply valve (41) and a second water supply valve (42). The water supply device (40) may be connected to an external water source. The first water supply valve (41) and the second water supply valve (42) may be connected to the external water source. As described above, the first water supply valve (41) may correspond to a hot water valve. The second water supply valve (42) may correspond to a cold water valve.

[0191] The control unit (300) can control the water supply device (40). The control unit (300) can control the opening and closing of each of the first water supply valve (41) and the second water supply valve (42). The control unit (300) can adjust the opening degree of each of the first water supply valve (41) and the second water supply valve (42). The first water supply valve (41) can open or close the first water supply pipe (43) based on an electrical signal transmitted from the control unit (300).

[0192] The second water supply valve (42) can selectively supply water to the upper detergent supply device (50), the nozzle device (96), and the tub (20). As described above, the second water supply pipe (44) can include a first pipe (441), a second pipe (442), and a third pipe (443). The second water supply valve (42) can be connected to the first pipe (441), the second pipe (442), and the third pipe (443). The first pipe (441), the second pipe (442), and the third pipe (443) can be referred to as a first water supply path, a second water supply path, and a third water supply path, respectively. For convenience of explanation, the second water supply valve (42) can be referred to as a 'water supply valve'.

[0193] The control unit (300) can control the water supply device (40) to supply water to at least one of the upper detergent supply device (50), the nozzle device (96), and the tub (20) to perform at least one of the washing cycle, the rinsing cycle, the dehydration cycle, and the drying cycle. The water supply device (40) can open or close at least one of the first water supply path, the second water supply path, and the third water supply path based on an electrical signal transmitted from the control unit (300). That is, the control unit (300) can control the water supply device (40) to supply water to the upper detergent supply device (50) through the first pipe (441). The control unit (300) can control the water supply device (40) to supply water to the nozzle device (96) through the second pipe (442). The control unit (300) can control the water supply device (40) to supply water to the tub (20) through the third pipe (443).

[0194] The second water supply valve (42) may include a first valve (42a), a second valve (42b), and a third valve (43c). The control unit (300) may control the opening and closing of each of the first valve (42a), the second valve (42b), and the third valve (43c). The control unit (300) may adjust the opening of each of the first valve (42a), the second valve (42b), and the third valve (43c). When the first valve (42a) is opened, water may be supplied to the upper detergent supply device (50) through the first pipe (441). When the second valve (42b) is opened, water may be supplied to the nozzle device (96) through the second pipe (442). When the third valve (42c) is opened, water may be supplied to the tub (20) through the third pipe (443).

[0195] The water supply valve (42) may be provided as a four-way valve. When the water supply valve (42) is provided as a four-way valve, a piston assembly provided within the water supply valve (42) may move under the control of the control unit (300). As the piston assembly of the water supply valve (42) moves, water may flow through each of the first pipe (441), the second pipe (442), and the third pipe (443), or the flow of water through each of the first pipe (441), the second pipe (442), and the third pipe (443) may be blocked.

[0196] The drain pump (71) can discharge water inside the tub (20) to the outside of the housing (10). The control unit (300) can control the drain pump (71) so that the water inside the tub (20) is discharged to the outside through the drain pipe (73).

[0197] The circulation pump (76) can send water inside the tub (20) to the lower detergent supply device (60). Water that has passed through the circulation pump (76) and the lower detergent supply device (60) can return to the tub (20). The control unit (300) can control the circulation pump (76) so that the water inside the tub (20) circulates through the lower detergent supply device (60).

[0198] The drying device (80) can remove moisture contained in the air, heat the air, and supply the heated air to the tub (20). The control unit (300) can operate the drying device (80) to dry laundry located inside the drum (30). To generate dried and heated air, the drying device (80) can include a fan (87a), a compressor (91), a heat exchanger (92, 93), and an expansion valve.

[0199] The control unit (300) can control the fan (87a), compressor (91), and expansion valve included in the drying device (80). The control unit (300) can operate the fan (87a) so that dried and heated air is supplied into the drum (30). The control unit (300) can adjust the rotation speed of the fan (87a). The flow rate of the air supplied into the drum (30) can vary depending on the rotation speed of the fan (87a).

[0200] The compressor (91) compresses low-temperature and low-pressure gaseous refrigerant and discharges it as high-temperature and high-pressure gaseous refrigerant. For example, the compressor (91) can compress the refrigerant through the reciprocating motion of a piston or the rotary motion of a rotor. The discharged gaseous refrigerant can be delivered to the condenser (92). The control unit (300) can adjust the operating frequency and / or rotational speed (RPM) of the compressor (91). As the operating frequency and / or rotational speed (RPM) of the compressor (91) increases, the heat released around the condenser (92) can increase. The control unit (400) can adjust the opening of the expansion valve. The expansion valve can be provided as a capillary tube for controlling the pressure of the liquid refrigerant and an electronic expansion valve whose opening can be controlled by an electric signal. The low-temperature and low-pressure two-phase refrigerant that has passed through the expansion valve is introduced into the evaporator (93).

[0201] The control unit (300) can control the water supply device (40) to clean the heat exchanger (92, 93) of the drying device (80). The control unit (300) can control the second water supply valve (42) to spray water from the nozzle device (96) to the heat exchanger (92, 93). For example, when the second valve (42b) constituting the second water supply valve (42) is opened, water can be sprayed from the nozzle device (96) to the heat exchanger (92, 93).

[0202] The control unit (300) can control the water supply device (40) to remove foam generated in the rinsing cycle of the drying device (80). The control unit (300) can control the second water supply valve (42) to spray water into the interior of the drum (30). For example, when the third valve (43c) constituting the second water supply valve (42) is opened, water can be guided into the interior of the drum (30) through the third pipe (443). The water guided into the interior of the drum (30) through the third pipe (443) can remove foam remaining on the inside of the laundry door (17) and / or the diaphragm (22).

[0203] The control unit (300) can operate only the fan (87a) without operating the heat pump during the dehydration process. Not operating the heat pump may include not operating the compressor (91).

[0204] That is, the control unit (300) can operate only the fan (87a) without operating the compressor (91) during the dehydration process. By operating the fan (87a) during the dehydration process, it is possible to suppress foam that may be generated due to the high-speed rotation of the drum (30).

[0205] When the drum (30) rotates at high speed while the circulation valve (77v) opens the circulation path formed by the circulation pipe (77), bubbles generated in the drum (30) can flow into the circulation path due to the Venturi effect.

[0206] In one embodiment, the control unit (300) can control the circulation valve (77v) to close the circulation path formed by the circulation pipe (77) during the dehydration process. That is, the control unit (300) can close the circulation valve (77v) during the dehydration process.

[0207] In this disclosure, the ‘dehydration process’ may mean the final dehydration process (1031) of the dehydration process (1030) to be described later.

[0208] FIG. 8 is a flowchart illustrating an example of operations performed by a garment treatment device according to one embodiment of the present disclosure.

[0209] Referring to FIG. 8, the clothing treatment device (1) can perform at least one of a washing cycle, a rinsing cycle, a dehydration cycle, and a drying cycle based on an operation course selected by a user. For example, the operation course of the clothing treatment device (1) can be determined as a standard washing cycle and a standard drying cycle. The standard washing cycle can include a washing cycle, a rinsing cycle, and a dehydration cycle. The standard drying cycle can include a drying cycle. The clothing treatment device (1) can sequentially perform a washing cycle (1010), a rinsing cycle (1020), a dehydration cycle (1030), and a drying cycle (1040).

[0210] The clothing treatment device (1) may selectively perform at least one of a washing cycle (1010), a rinsing cycle (1020), a dehydration cycle (1030), and a drying cycle (1040) depending on the operation course. For example, the clothing treatment device (1) may perform the rinsing cycle (1020) and the dehydration cycle (1030) in response to selection of a rinse-dehydration course. The clothing treatment device (1) may perform the dehydration cycle (1030) in response to selection of a dehydration course. The clothing treatment device (1) may also perform only the drying cycle (1040) in response to selection of a standard drying course.

[0211] By means of the washing process (1010), laundry can be washed. Specifically, foreign substances attached to the laundry can be separated by the chemical action of the detergent and / or mechanical action such as dropping.

[0212] The washing process (1010) may include laundry measurement (1011) for measuring the amount of laundry, water supply (1012) for supplying water to the tub (20), washing (1013) for washing laundry by rotating the drum (30) at low speed, drainage (1014) for discharging water contained in the tub (20), and intermediate dehydration (1015) for separating water from laundry by rotating the drum (30) at high speed.

[0213] For washing (1013), the control unit (300) can control the driving device (36) to rotate the driving motor (36a) in a forward direction (e.g., clockwise) or reverse direction (e.g., counterclockwise). By the rotation of the drum (30), laundry falls from the upper side to the lower side of the drum (30), and the laundry can be washed by the falling.

[0214] For intermediate dehydration (1015), the control unit (300) can control the driving device (36) to rotate the driving motor (36a) at high speed. By the high-speed rotation of the drum (30), water can be separated from the laundry contained in the drum (30) and discharged to the outside of the clothing treatment device (1).

[0215] Through the rinsing cycle (1020), laundry can be rinsed. Specifically, detergent or foreign substances left on the laundry can be washed away by water.

[0216] The rinsing process (1020) may include a water supply (1021) that supplies water to the tub (20), a rinse (1022) that drives the drum (30) to rinse laundry, a drain (1023) that discharges water contained in the tub (20), and an intermediate spin-drying (1024) that drives the drum (30) to separate water from laundry.

[0217] The water supply (1021), drainage (1023), and intermediate spin-drying (1024) of the rinsing cycle (1020) may be the same as the water supply (1012), drainage (1014), and intermediate spin-drying (1015) of the washing cycle (1010), respectively. During the rinsing cycle (1020), the water supply (1021), rinsing (1022), drainage (1023), and intermediate spin-drying (1024) may be performed once or multiple times.

[0218] By the dehydration process (1030), laundry can be dehydrated. Specifically, water is separated from the laundry by the high-speed rotation of the drum (30), and the separated water can be discharged to the outside of the clothing treatment device (1).

[0219] The dehydration cycle (1030) may include a final dehydration cycle (1031) that separates water from the laundry by rotating the drum (30) at high speed. Due to the final dehydration cycle (1031), the last intermediate dehydration cycle (1024) of the rinsing cycle (1020) may be omitted.

[0220] For the final dehydration process (1031), the control unit (300) can control the driving device (36) to rotate the driving motor (36a) at high speed. By the high-speed rotation of the drum (30), water can be separated from the laundry contained in the drum (30) and discharged to the outside of the clothing treatment device (1). In addition, the rotation speed of the driving motor (36a) can be increased stepwise.

[0221] The control unit (300) can stop the drum (30) after rotating it at a preset maximum speed for a preset time based on the start of the final dehydration cycle (1031).

[0222] In one embodiment, the final dehydration cycle (1031) may include a low-speed dehydration section in which the drum (30) rotates at a preset intermediate speed (e.g., 500 RPM) lower than a preset maximum speed (e.g., 1100 RPM), and a high-speed dehydration section in which the drum (30) rotates at a preset maximum speed.

[0223] In the low-speed dehydration section, the drum (30) can be accelerated to a preset intermediate speed, maintained at the preset intermediate speed for a predetermined first time, and then decelerated.

[0224] In the high-speed dehydration section, the drum (30) may be accelerated to a preset maximum speed, maintained at the preset maximum speed for a predetermined second time, and then decelerated. In this case, the predetermined second time may be longer than the predetermined first time.

[0225] The control unit (300) can accelerate the drum (30) to a preset intermediate speed based on the start of the final dehydration cycle (1031), maintain the rotation of the drum (30) at the preset intermediate speed for a predetermined first time, then decelerate the drum (30), accelerate the drum (30) to a preset maximum speed, maintain the rotation of the drum (30) at the preset maximum speed for a predetermined second time, and then stop the drum (30) after rotating for a predetermined time.

[0226] The preset medium speed, preset maximum speed, predetermined first time, and predetermined second time may be changed depending on the weight of the laundry measured in the laundry measurement (1011) step, the quality of the laundry, the type of course selected by the user, and / or the spin-drying setting selected by the user.

[0227] The low-speed spin cycle may be omitted depending on the weight of the laundry measured in the laundry measurement (1011) step and / or the type of course selected by the user.

[0228] The final dehydration cycle (1031) may be terminated in response to the drum (30) being stopped after the high-speed dehydration section.

[0229] When the dehydration process (1030) is completed, the drying process (1040) can be performed. To perform the drying process (1040), the control unit (300) can operate the drying device (80) so that hot air is supplied into the tub (20) and the drum (30). In addition, the control unit (300) can rotate the drum (30) at a relatively low speed. The control unit (300) can supply hot air into the tub (20) and the drum (30) by operating the heat pump and rotating the fan (87a).

[0230] In the present disclosure, operating the heat pump may include operating the compressor (91), and may be defined in a separate sense from operating the fan (87a).

[0231] In the present disclosure, operating the fan (87a) may include rotating the fan (87a).

[0232] Immediately after entering the drying process (1040) or before the drying process (1040) begins, water may be supplied to the upper detergent supply device (50) for a predetermined period of time (e.g., 1 second) to prevent moisture leakage within the tub (20). As described above, the detergent connection pipe (51) connecting the tub (20) and the upper detergent supply device (50) is provided in a U shape, and when water is supplied to the upper detergent supply device (50), the bent portion of the detergent connection pipe (51) can be filled with water. If the detergent connection pipe (51) is blocked by water, moisture within the tub (20) can be prevented from being discharged to the outside through the upper detergent supply device (50).

[0233] When the drying process (1040) is completed, the operation of the clothing treatment device (1) may be stopped and the power may be turned off.

[0234] FIG. 9 is a flowchart illustrating an example of a method for controlling a garment treatment device according to one embodiment of the present disclosure.

[0235] Referring to FIG. 9, the garment treatment device (1) may initiate a dehydration cycle (1030) in response to the completion of the rinsing cycle (1030) (1100). As previously described, the dehydration cycle (1030) in the present disclosure may include a final dehydration cycle (1031).

[0236] The control unit (300) may close the circulation valve (77v) based on the start of the dehydration process (1030) (1200). Closing the circulation valve (77v) may mean controlling the circulation valve (77v) to close the circulation path.

[0237] Closing the circulation valve (77v) based on the start of the dehydration cycle (1030) may include closing the circulation valve (77v) based on the end of the rinsing cycle (1020), closing the circulation valve (77v) at a predetermined point in time before the start of the dehydration cycle (1030), and closing the circulation valve (77v) after a predetermined time has elapsed after the start of the dehydration cycle (1030).

[0238] In particular, the control unit (300) can control the circulation valve (77v) so that the circulation valve (77v) remains closed in the high-speed dehydration section during the dehydration process (1030).

[0239] In one embodiment, the control unit (300) may open the circulation valve (77v) based on the completion of the dehydration cycle (1030). In one embodiment, the control unit (300) may open the circulation valve (77v) in the remaining cycles (1010, 1020, 1040) other than the dehydration cycle (1030). Opening the circulation valve (77v) may mean controlling the circulation valve (77v) to open the circulation path.

[0240] When foam flows into the circulation pipe (77) as the drum (30) rotates at high speed during the dehydration process (1030), the foam flowing into the circulation pipe (77) flows back into the inside of the drum (30) as the drum (30) stops, and foam may remain inside the drum (30).

[0241] According to the present disclosure, it is possible to prevent bubbles from flowing into the circulation pipe (77) by the venturi effect as the drum (30) rotates at high speed during the dehydration process (1030).

[0242] In this disclosure, it will be clearly understood by those skilled in the art that the circulation valve (77v) is distinct from the drain valve that opens and closes the drain line (97).

[0243] The control unit (300) can control the drain valve to open the drain line (97) so that water is discharged to the outside of the clothing treatment device (1) during the dehydration cycle (1030).

[0244] The control unit (300) can perform low-speed dehydration (1300) based on the start of the dehydration process (1030).

[0245] Low-speed dehydration corresponds to the low-speed dehydration section described above. That is, the control unit (300) can accelerate the drum (30) to a preset intermediate speed.

[0246] The control unit (300) can control the drum (30) so that the drum (30) maintains the preset intermediate speed for a predetermined first time when the drum (30) reaches a preset intermediate speed, and can control the drum (30) so that the drum (30) decelerates to a preset speed when the preset first time has elapsed.

[0247] In the present disclosure, the low-speed dehydration section may include a section in which the drum (30) accelerates to a preset intermediate speed, maintains the preset intermediate speed for a preset first time period, and then decelerates to a preset speed.

[0248] The control unit (300) may not rotate the fan (87a) in the low-speed dehydration section. That is, the control unit (300) may keep the fan (87a) stopped in the low-speed dehydration section. According to various embodiments, the control unit (300) may rotate the fan (87a) in the low-speed dehydration section, but the rotation speed of the fan (87a) in the low-speed dehydration section may be slower than the rotation speed of the fan (87a) in the high-speed dehydration section.

[0249] The control unit (300) may perform a water injection operation (1450) in response to the drum (30) reaching a target speed while accelerating at a preset intermediate speed (example of 1400). At this time, the target speed may be a speed lower than the preset maximum speed and lower than the preset intermediate speed.

[0250] The control unit (300) performing the water spraying operation may include controlling the water supply device (40) to spray water toward the drum (30).

[0251] Controlling the water supply device (40) to spray water toward the drum (30) by the control unit (300) may include opening the third valve (42c) to supply water to the tub (20) through the third pipe (443).

[0252] In one embodiment, the control unit (300) can perform a water injection process by repeating the operation of opening the third valve (42c) for a preset opening time (e.g., 4 seconds) and closing it for a preset closing time (e.g., 4 seconds) a predetermined number of times (e.g., 3 or more times).

[0253] The spin-drying cycle (1030) is a cycle for dehydrating laundry, and it is not desirable for water to flow into the drum (30) during the spin-drying cycle (1030). However, foam generated in the rinsing cycle (1020) may remain in the diaphragm (22), and according to the present disclosure, the foam generated in the rinsing cycle (1020) can be removed by spraying a small amount of water through the third pipe (443) toward the diaphragm (22).

[0254] The clothing treatment device (1) can perform high-speed dehydration after low-speed dehydration (1500).

[0255] High-speed dehydration corresponds to the high-speed dehydration section described above. That is, the control unit (300) can accelerate the drum (30) to a preset maximum speed in the high-speed dehydration section.

[0256] The control unit (300) can control the drum (30) so that the drum (30) maintains the preset maximum speed for a predetermined second time when the drum (30) reaches the preset maximum speed, and can control the drum (30) so that the drum (30) stops when the predetermined second time (preset time) elapses.

[0257] That is, the control unit (300) can stop the drum (30) after rotating it at a preset maximum speed for a preset time based on the start of the final dehydration process (1030).

[0258] According to various embodiments, the control unit (300) may perform high-speed dehydration after performing low-speed dehydration in response to the start of the final dehydration operation (1030), or may perform high-speed dehydration immediately.

[0259] Even if the final dehydration process (1030) does not include low-speed dehydration, the control unit (300) can perform a water injection process (1450) in response to the drum (30) reaching the target speed while accelerating to a preset maximum speed (example of 1400).

[0260] The control unit (300) can rotate the fan (87a) while performing high-speed dehydration. In one embodiment, the control unit (300) can control the fan (87a) so that the fan (87a) rotates while the drum (30) rotates at a preset maximum speed.

[0261] To this end, the control unit (300) can turn on the fan (87a) before the drum (30) rotates at the preset maximum speed, or while the drum (30) rotates at the preset maximum speed (1600).

[0262] The control unit (300) can control the fan (87a) so that the fan (87a) remains stopped in the low-speed dehydration section.

[0263] Controlling the fan (87a) so that the fan (87a) remains stationary may include not turning on the fan (87a), not rotating the fan (87a), and / or keeping the fan (87a) in an off state.

[0264] The fan (87a) is configured as a component of the drying device (80) to blow hot air into the inside of the tub (20) during the drying cycle (1040). That is, according to the prior art, the fan operates only during the drying cycle.

[0265] According to the present disclosure, the fan (87a) can rotate even during the dehydration process (1030). In particular, according to the present disclosure, the fan (87a) can rotate during the high-speed dehydration section during the dehydration process (1030).

[0266] The control unit (300) may not operate the heat pump during the dehydration cycle (1030). That is, the control unit (300) may rotate the fan (87a) during the dehydration cycle (1030), but may prevent the compressor (91) from operating.

[0267] According to the present disclosure, by rotating the fan (87a) in the dehydration process (1030), the generation of bubbles due to the rotation of the drum (30) can be suppressed.

[0268] In particular, according to the present disclosure, by rotating the fan (87a) in the high-speed dehydration section during the dehydration process (1030), the generation of bubbles due to the high-speed rotation of the drum (30) can be suppressed.

[0269] The principle of suppressing the generation of bubbles due to the rotation of the drum (30) by rotating the fan (87a) will be described later with reference to FIG. 16.

[0270] In addition, according to the present disclosure, since only the fan (87a) operates without the operation of the compressor (91) in the dehydration process (1030), noise generation and energy consumption due to the operation of the compressor (91) can be prevented.

[0271] The control unit (300) can rotate the fan (87a) until the dehydration process (1030) is completed (1700). In this case, the control unit (300) can turn off the fan (87a) in response to the drum (30) being stopped.

[0272] The control unit (300) can stop the fan (87a) at a predetermined point in time before the dehydration process (1030) ends (1700). In this case, the control unit (300) can stop the fan (87a) while the drum (30) is decelerating to stop (1700).

[0273] According to the present disclosure, by operating the fan (87a) during the dehydration process (1030) to blow air into the interior of the drum (30), it is possible to prevent bubbles from being generated due to the rotation of the drum (30).

[0274] FIG. 10 illustrates an example of a dehydration operation profile of a garment treatment device according to one embodiment of the present disclosure.

[0275] Referring to FIG. 10, the dehydration process (1030) may include a low-speed dehydration section (L1) and a high-speed dehydration section (H1).

[0276] The low-speed dehydration section (L1) may include a section in which the drum (30) accelerates to a preset intermediate speed (r1), maintains the preset intermediate speed (r1) for a predetermined first time (pd1), and then decelerates.

[0277] The control unit (300) can control the fan (87a) so that the fan (87a) remains stopped in the low-speed dehydration section (L1).

[0278] The high-speed dehydration section (H1) may include a section in which the drum (30) accelerates to a preset maximum speed (r2), maintains the preset maximum speed (r2) for a predetermined second time (pd2), and then decelerates.

[0279] The control unit (300) can control the fan (87a) to rotate in the high-speed dehydration section (H1). In particular, the control unit (300) can control the fan (87a) to rotate while the drum (30) rotates at a preset maximum speed (r2).

[0280] The target speed (rt) is the time that serves as the reference for the water injection process, and can be preset to a speed lower than the preset intermediate speed (r1).

[0281] The control unit (300) can perform a water spraying stroke in response to the rotation speed of the drum (30) reaching the target speed (rt).

[0282] According to the present disclosure, a water spraying operation is performed in response to the rotation speed of the drum (30) reaching the target speed (rt), thereby removing foam generated in the previous rinsing operation (1020).

[0283] According to the present disclosure, by rotating the fan (87a) while the drum (30) rotates at a preset maximum speed, the generation of bubbles due to high-speed rotation of the drum (30) can be prevented.

[0284] In addition, according to the present disclosure, the circulation valve (77v) is closed based on the start of the dehydration process (1030), thereby preventing bubbles from flowing into the circulation pipe (77).

[0285] According to the present disclosure, the dehydration efficiency can be improved by suppressing the generation of bubbles within the drum (30).

[0286] FIG. 11 is a flowchart illustrating a specific example of a control method for a garment treatment device according to one embodiment of the present disclosure.

[0287] In one embodiment, the garment treatment device (1) can rotate the fan (87a) during the dehydration cycle (1030), and can rotate the fan (87a) while the drum (30) rotates at a preset maximum speed (r2).

[0288] Meanwhile, in order to rotate the fan (87a) while the drum (30) rotates at the preset maximum speed (r2), the clothing treatment device (1) can turn on the fan (87a) before the drum (30) rotates at the preset maximum speed (r2), when the drum (30) reaches the preset maximum speed (r2), and / or after the drum (30) rotates at the preset maximum speed (r2).

[0289] Turning on the fan (87a) may include initiating rotation of the fan (87a).

[0290] In one embodiment, the garment treatment device (1) can change the timing of turning on the fan (87a) according to the profile of the dehydration cycle (1030).

[0291] The profile of the spin cycle (1030) may be changed depending on the type of course, spin cycle setting, weight of laundry, and / or quality of laundry.

[0292] The profile of the dehydration process (1030) may include the presence or absence of a low-speed dehydration section (L1).

[0293] The profile of the dehydration process (1030) may include a preset intermediate speed (r1) which is the maximum speed in the low-speed dehydration section (L1), a preset maximum speed (r2) which is the maximum speed in the high-speed dehydration section (H1), a predetermined first time (pd1) for maintaining the preset intermediate speed (r1) in the low-speed dehydration section (L1), and / or a predetermined second time (pd2) for maintaining the preset maximum speed (r2) in the high-speed dehydration section (H1).

[0294] Referring to FIG. 11, the control unit (300) can determine the profile of the dehydration process (1030) based on the weight of the laundry measured in the laundry measurement step (1011), the quality of the laundry, the type of course selected by the user, and / or the dehydration setting selected by the user.

[0295] More specifically, the control unit (300) can determine a preset intermediate speed (r1), a preset maximum speed (r2), a predetermined first time (pd1), and a predetermined second time (pd2) based on the weight of the laundry measured in the laundry measurement (1011) step, the quality of the laundry, the type of course selected by the user, and / or the dehydration setting selected by the user.

[0296] The control unit (300) can determine the operating point of the fan (87a) (the on point of the fan (87a)) based on the preset maximum speed (r2).

[0297] The control unit (300) can determine the operating time of the fan (87a) (the on time of the fan (87a)) based on the preset maximum speed (r2) and the predetermined second time (pd2) (hereinafter referred to as 'preset time (pd2)').

[0298] FIG. 12 illustrates an example of a fan turning on in a dehydration cycle of a garment treatment device according to one embodiment of the present disclosure.

[0299] Referring to FIGS. 11 and 12, in one embodiment, the control unit (300) can turn on the fan (87a) at a point in time (t1) after a predetermined time (k1) has elapsed after the drum (30) reaches the preset maximum speed (r2) based on the preset maximum speed (r2) being greater than the first reference speed (example of 1610) and the preset time (pd2) being greater than the reference time (example of 1620) (1623).

[0300] Turning on the fan (87a) at a point in time (t1) after a predetermined time (k1) has elapsed after the drum (30) reaches the preset maximum speed (r2) may include turning on the fan (87a) when the remaining time for which the drum (30) must maintain the preset maximum speed (r2) after reaching the preset maximum speed (r2) is a predetermined time (k2).

[0301] For example, assuming that the preset time (pd2) is 10 minutes and the predetermined time (k2) is 4 minutes, the control unit (300) can turn on the fan (87a) 6 minutes after the drum (30) reaches the preset maximum speed (r2).

[0302] According to the present disclosure, by turning on the fan (87a) at a time when the drum (30) rotates at high speed and there is a high possibility of foam generation, noise and power consumption due to the operation of the fan (87a) can be minimized and foam generation can be efficiently suppressed.

[0303] FIG. 13 illustrates another example of the on point of the fan in the dehydration cycle of the garment treatment device according to one embodiment of the present disclosure.

[0304] Referring to FIGS. 11 and 13, in one embodiment, the control unit (300) can turn on the fan (87a) at a time point (t2) when the drum (30) reaches a third reference speed (r3) that is less than the preset maximum speed (r2) based on the preset maximum speed (r2) being greater than the first reference speed (example of 1610) and the preset time (pd2) being greater than the reference time (example of 1620) (1626).

[0305] Here, the third reference speed (r3) can be preset to a speed greater than the preset intermediate speed (r1) and less than the preset maximum speed (r2).

[0306] According to the present disclosure, when the period during which the drum (30) rotates at high speed is short, the generation of bubbles can be efficiently suppressed by operating the fan (87a) in advance before the drum (30) rotates at high speed.

[0307] FIG. 14 illustrates another example of the on point of the fan in the dehydration cycle of the garment treatment device according to one embodiment of the present disclosure.

[0308] Referring to FIGS. 11 and 14, in one embodiment, the control unit (300) can turn on the fan (87a) at a time point (t3) when the drum (30) reaches the second reference speed (rm) based on the fact that the preset maximum speed (r2) is less than the first reference speed but greater than the second reference speed (rm) (example of 1630) (1633).

[0309] Here, the second reference speed (rm) can be preset to a speed greater than the preset intermediate speed (r1).

[0310] In one embodiment, the control unit (300) can turn on the fan (87a) at the time (t3) when the drum (30) reaches the second reference speed (rm) based on the preset maximum speed (r2) corresponding to the second reference speed (rm) (example of 1630) (1633).

[0311] According to the present disclosure, when the maximum speed of the drum (30) is relatively low, the noise and power consumption due to the operation of the fan (87a) can be minimized and foam generation can be efficiently suppressed by turning on the fan (87a) just before the drum (30) rotates at the maximum speed or at the time when the drum (30) starts to rotate at the maximum speed.

[0312] FIG. 15 illustrates another example of the on point of a fan in a dehydration cycle of a garment treatment device according to one embodiment of the present disclosure.

[0313] Referring to FIGS. 11 and 15, in one embodiment, the control unit (300) can turn on the fan (87a) at a point in time (t4) after a preset time (pd2) has elapsed after the drum (30) reaches the preset maximum speed (r2) based on the preset maximum speed (r2) being smaller than the second reference speed (rm) (No of 1630) (1636).

[0314] The point in time (t4) at which a preset time (pd2) has elapsed after the drum (30) reaches the preset maximum speed (r2) may mean the point in time (t4) at which the drum (30) begins to decelerate to stop.

[0315] According to the present disclosure, when the maximum speed of the drum (30) is low, the generation of bubbles due to the deceleration of the drum (30) can be suppressed by turning on the fan (87a) at the point when the drum (30) begins to decelerate.

[0316] As previously described, the control unit (300) can turn off the fan (87a) based on the drum (30) being stopped.

[0317] Additionally, the target speed (rt) that serves as a reference for the water injection process can be set to be smaller than the second reference speed (rm).

[0318] That is, the control unit (300) can control the water supply device to spray water toward the drum (30) before the fan (87a) turns on.

[0319] As a result, the clothing treatment device (1) according to the present disclosure prevents foam from flowing into the circulation pipe (77) in advance by closing the circulation valve (77v) when the dehydration cycle (1030) starts, removes foam generated in the rinsing cycle (1020) by controlling the water supply device to spray water toward the drum (30) before the drum (30) rotates at high speed during the dehydration cycle (1030), and suppresses the generation of foam due to high-speed rotation of the drum (30) by rotating the fan (87a) when the drum (30) rotates at high speed during the dehydration cycle (1030).

[0320] According to the present disclosure, a clothing treatment device (1) with improved dehydration efficiency by suppressing the generation of bubbles can be provided.

[0321] Figure 16 schematically illustrates the flow of air in the dehydration process of a garment treatment device according to one embodiment of the present disclosure.

[0322] Referring to Fig. 16, a duct section (22a) according to one embodiment may be provided on the upper left side of the drum (30). Accordingly, when the fan (87a) rotates, air may be introduced from the upper left side of the drum (30) toward the lower side. According to various embodiments, the garment treatment device (1) may rotate the drum (30) clockwise during the dehydration cycle (1030).

[0323] Air flowing in from the upper left side of the drum (30) toward the lower side can cause a counterclockwise air flow (FF), and rotation of the drum (30) in the clockwise direction can cause a clockwise air flow (DF).

[0324] The air flow (FF) generated by the operation of the fan (87a) and the air flow (DF) generated by the rotation of the drum (30) have opposite directions and can thus cancel each other out.

[0325] If only the air flow (DF) due to the rotation of the drum (30) exists inside the drum (30), foam may be generated from the laundry, but if the air flow (FF) generated due to the operation of the fan (87a) offsets the air flow (DF) due to the rotation of the drum (30), foam generation from the laundry may be suppressed.

[0326] That is, according to the present disclosure, the generation of bubbles inside the drum (30) can be suppressed by the air flow (FF) generated by the operation of the fan (87a) offsetting the air flow (DF) generated by the rotation of the drum (30).

[0327] Meanwhile, according to various embodiments, when air is introduced from the upper right side to the lower side of the drum (30) according to the operation of the fan (87a), the clothing treatment device (1) can rotate the drum (30) counterclockwise during the dehydration cycle (1030).

[0328] That is, the rotation direction of the drum (30) during the dehydration cycle (1030) can be set differently depending on the position of the duct section (22a) that guides the air blown by the operation of the fan (87a) into the interior of the drum (30).

[0329] A clothing treatment device (1) according to one embodiment of the present disclosure may include: a tub (20); a drum (30) rotatably provided within the tub (20); a drying device (80) including a heat pump and a fan (87a) for supplying heated air into the interior of the tub (20); and a control unit (300) for rotating the drum (30) at a preset maximum speed (r2) for a preset time (pd2) based on the start of a dehydration cycle (1030), and operating the fan (87a) to blow air into the interior of the tub (20) while the drum (30) is rotating at the preset maximum speed (r2).

[0330] The dehydration process (1030) may include a low-speed dehydration section (L1) that rotates the drum (30) at a preset intermediate speed (r1) lower than a preset maximum speed (r2), and a high-speed dehydration section (H1) that rotates the drum (30) at a preset maximum speed (r2).

[0331] The control unit (300) can control the fan (87a) to maintain the fan (87a) in a stationary state in the low-speed dehydration section (L1) and rotate the fan (87a) in the high-speed dehydration section (H1).

[0332] The control unit (300) can turn on the fan (87a) based on the rotation speed of the drum (30) reaching a preset maximum speed (r2).

[0333] The control unit (300) can turn on the fan (87a) in response to a predetermined time elapsed after the rotation speed of the drum (30) reaches a preset maximum speed (r2).

[0334] The control unit (300) can turn off the fan (87a) when the drum (30) stops.

[0335] The control unit (300) may be configured to not operate the heat pump (91) in the dehydration process (1030).

[0336] The clothing treatment device (1) may further include a water supply device (40) configured to spray water toward the drum (30).

[0337] The control unit (300) can control the water supply device (40) to spray water toward the drum (30) in response to the rotation speed of the drum (30) reaching a target speed (rt) lower than a preset maximum speed (r2).

[0338] The control unit (300) can control the water supply device (40) to spray water toward the drum (30) before the fan (87a) is turned on.

[0339] The clothing treatment device (1) may further include a circulation path (77) that guides water stored in the tub (20) into the interior of the tub (20); and a circulation valve (77v) that opens and closes the circulation path (77).

[0340] The control unit (300) can control the circulation valve (77v) to close the circulation path (77) based on the start of the dehydration process (1030).

[0341] A method for controlling a clothing treatment device (1) according to one embodiment of the present disclosure includes: a tub (20); a drum (30) rotatably provided within the tub (20); and a heat pump and a fan (87a) for supplying heated air into the interior of the tub (20); wherein the method may include: rotating the drum (30) at a preset maximum speed (r2) for a preset time (pd2) based on the start of a dehydration cycle (1030); and operating the fan (87a) to blow air into the interior of the tub (20) while the drum (30) rotates at the preset maximum speed (r2).

[0342] The method for controlling the clothing treatment device (1) further includes controlling the fan (87a) so that the fan (87a) remains stationary in the low-speed spin-drying section (L1); and operating the fan (87a) while the drum (30) rotates at a preset maximum speed (r2) may include operating the fan (87a) in the high-speed spin-drying section (H1).

[0343] Operating the fan (87a) while the drum (30) rotates at a preset maximum speed (r2) may include turning on the fan (87a) in response to the rotation speed of the drum (30) reaching a reference speed that is higher than a preset intermediate speed (r1) and lower than a preset maximum speed (r2).

[0344] Operating the fan (87a) while the drum (30) rotates at a preset maximum speed (r2) may include turning on the fan (87a) based on the rotation speed of the drum (30) reaching the preset maximum speed (r2).

[0345] Operating the fan (87a) while the drum (30) rotates at a preset maximum speed (r2) may include turning on the fan (87a) in response to a predetermined time elapsed after the rotation speed of the drum (30) reaches the preset maximum speed (r2).

[0346] The control method of the clothing treatment device (1) may further include turning off the fan (87a) when the drum (30) stops.

[0347] The control method of the clothing treatment device (1) may further include not operating the heat pump (91) that heats the air supplied to the inside of the tub (20) by the fan (87a) in the dehydration cycle (1030).

[0348] The control method of the clothing treatment device (1) may further include operating a water supply device (40) that sprays water toward the drum (30) in response to the rotation speed of the drum (30) reaching a target speed (rt) lower than a preset maximum speed (r2).

[0349] Operating the water supply device (40) can be performed before the fan (87a) is turned on.

[0350] The control method of the clothing treatment device (1) may further include closing the circulation path (77) that guides water stored in the tub (20) into the interior of the tub (20) based on the start of the dehydration cycle (1030).

[0351] Meanwhile, the disclosed embodiments may be implemented in the form of a recording medium storing computer-executable instructions. The instructions may be stored in the form of program code, and when executed by a processor, may generate program modules to perform the operations of the disclosed embodiments. The recording medium may be implemented as a computer-readable recording medium.

[0352] Computer-readable storage media include all types of storage media that store instructions that can be deciphered by a computer. Examples include read-only memory (ROM), random access memory (RAM), magnetic tape, magnetic disks, flash memory, and optical data storage devices.

[0353] Additionally, a computer-readable recording medium may be provided in the form of a non-transitory storage medium. Here, the term "non-transitory storage medium" simply means a tangible device that does not contain signals (e.g., electromagnetic waves). This term does not distinguish between cases where data is permanently stored in the storage medium and cases where data is temporarily stored. For example, a "non-transitory storage medium" may include a buffer in which data is temporarily stored.

[0354] According to one embodiment, the method according to various embodiments disclosed in the present document may be provided as included in a computer program product. The computer program product may be traded as a product between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable recording medium (e.g., compact disc read only memory (CD-ROM)), or may be distributed online (e.g., downloaded or uploaded) via an application store (e.g., Play Store™) or directly between two user devices (e.g., smartphones). In the case of online distribution, at least a portion of the computer program product (e.g., a downloadable app) may be temporarily stored or temporarily generated on a machine-readable recording medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

[0355] The disclosed embodiments have been described with reference to the attached drawings as described above. Those skilled in the art will understand that the present invention can be implemented in forms other than the disclosed embodiments without altering the technical spirit or essential features of the present invention. The disclosed embodiments are illustrative and should not be construed as limiting.

Claims

1. Tub; A drum rotatably provided within the above tub; A drying device including a heat pump and a fan for supplying heated air into the interior of the tub; and A garment treatment device comprising a control unit that rotates the drum at a preset maximum speed for a preset time based on the start of a dehydration process and operates the fan to blow air into the interior of the tub while the drum rotates at the preset maximum speed.

2. In paragraph 1, The above dehydration process is, It includes a low-speed dehydration section that rotates the drum at a preset intermediate speed lower than the preset maximum speed, and a high-speed dehydration section that rotates the drum at the preset maximum speed. The above control unit, A clothing treatment device that controls the fan so that the fan remains stationary in the low-speed spin-drying section and rotates the fan in the high-speed spin-drying section.

3. In paragraph 2, The above control unit, A clothing treatment device that turns on the fan in response to the rotation speed of the drum reaching a reference speed that is higher than the preset intermediate speed and lower than the preset maximum speed.

4. In paragraph 1, The above control unit, A clothing treatment device that turns on the fan based on the rotation speed of the drum reaching the preset maximum speed.

5. In paragraph 4, The above control unit, A clothing treatment device that turns on the fan in response to a predetermined time elapsed after the rotation speed of the drum reaches the preset maximum speed.

6. In paragraph 1, The above control unit, A clothes treatment device that turns off the fan when the drum stops.

7. In paragraph 1, The above control unit, A clothing treatment device configured so as not to operate the heat pump during the dehydration process.

8. In paragraph 1, Further comprising a water supply device configured to spray water toward the drum; The above control unit, A garment treatment device that controls the water supply device to spray water toward the drum in response to the rotation speed of the drum reaching a target speed lower than the preset maximum speed.

9. In paragraph 8, The above control unit, A garment treatment device that controls the water supply device to spray water toward the drum before the fan is turned on.

10. In paragraph 1, A circulation path that guides water discharged from the tub into the interior of the tub; and Further comprising a circulation valve for opening and closing the above circulation path; The above control unit, A garment treatment device that controls the circulation valve to close the circulation path based on the start of the dehydration process.

11. Tub; A drum rotatably provided within the above tub; and A method for controlling a clothing treatment device, comprising: a drying device including a heat pump and a fan for supplying heated air into the interior of the tub; The drum is rotated at a preset maximum speed for a preset time based on the start of the dehydration process; A method for controlling a garment treatment device, comprising: operating the fan to blow air into the interior of the tub while the drum rotates at the preset maximum speed.

12. In paragraph 11, The above dehydration process is, It includes a low-speed dehydration section that rotates the drum at a preset intermediate speed lower than the preset maximum speed, and a high-speed dehydration section that rotates the drum at the preset maximum speed. The control method of the above clothing treatment device is: Further comprising: controlling the fan so that the fan remains stationary in the low-speed dehydration section; Operating the fan while the drum rotates at the preset maximum speed, A method for controlling a clothing treatment device, comprising: operating the fan in the high-speed dehydration section.

13. In paragraph 12, Operating the fan while the drum rotates at the preset maximum speed, A method for controlling a garment treatment device, comprising: turning on the fan in response to the rotation speed of the drum reaching a reference speed higher than the preset intermediate speed and lower than the preset maximum speed.

14. In paragraph 11, Operating the fan while the drum rotates at the preset maximum speed, A method for controlling a garment treatment device, comprising: turning on the fan based on the rotation speed of the drum reaching the preset maximum speed.

15. In paragraph 11, Operating the fan while the drum rotates at the preset maximum speed, A method for controlling a garment treatment device, comprising: turning on the fan in response to a predetermined time elapsed after the rotation speed of the drum reaches the preset maximum speed.

Images