Clothes treating apparatus and controlling method therefor

Abstract

A clothes treating apparatus, according to an embodiment, comprises: a drum; a heat exchanger arranged above the drum; a compressor which supplies a refrigerant to the heat exchanger: a nozzle device provided to spray water to the heat exchanger; a water supply device which supplies water to the nozzle device; a compressor temperature sensor which detects a first temperature of the compressor; a control circuit temperature sensor which detects a second temperature of a control circuit; an air temperature sensor which detects a third temperature of the air discharged from the drum; and a control unit which controls the water supply device to spray water to the heat exchanger through the nozzle device on the basis of the first temperature of the compressor, the second temperature of the control circuit, or the third temperature of the air discharged from the drum during a drying operation.

Description

Garment treatment device and its control method

[0001] The disclosed invention relates to a garment treatment device including a drying device and a method for controlling the same.

[0002] A garment treatment device is a device for treating and / or managing clothing. A garment treatment device may include various devices, such as a washing machine, a dryer, or a garment care device. A washing machine may include a combined washing machine and dryer. A dryer can dry objects such as clothing. A dryer can dry objects by circulating air through an internal circulation path.

[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 the dryer-type washing machine 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] Prior technology implemented protective controls that halted the device mid-drying cycle to prevent damage caused by internal temperature rise. If the device stops mid-drying, the overall cycle time can be extended and energy efficiency can be reduced. This can result in user discomfort.

[0007] The disclosed invention provides a clothing treatment device and a control method thereof that circulates air through a circulation path inside the device, absorbs moisture from an object, and then dries the object through a dehumidification and heating process with a heat pump heat exchanger.

[0008] The disclosed invention provides a garment treatment device and a control method thereof that can prevent the operation of the garment treatment device from being stopped due to an increase in temperature inside the garment treatment device during a drying process.

[0009] According to one embodiment, a garment treatment device includes: a drum; a heat exchanger disposed on an upper portion of the drum; a compressor for supplying refrigerant to the heat exchanger; a nozzle device configured to spray water onto the heat exchanger; a water supply device for supplying water to the nozzle device; a compressor temperature sensor for detecting a first temperature of the compressor; a control circuit temperature sensor for detecting a second temperature of a control circuit; an air temperature sensor for detecting a third temperature of air discharged from the drum; and a control unit for controlling the water supply device to spray water onto the heat exchanger through the nozzle device during a drying cycle based on the first temperature of the compressor, the second temperature of the control circuit, or the third temperature of the air discharged from the drum.

[0010] In a method for controlling a garment treatment device including a heat exchanger disposed on the upper part of a drum, a compressor for supplying refrigerant to the heat exchanger, a nozzle device provided to spray water to the heat exchanger, and a water supply device for supplying water to the nozzle device, the method for controlling a garment treatment device according to one embodiment may include: starting a drying process based on selection of a drying course through a control panel or an external user device; controlling a compressor temperature sensor to detect a first temperature of the compressor; controlling a control circuit temperature sensor to detect a second temperature of the control circuit; controlling an air temperature sensor to detect a third temperature of air discharged from the drum; and controlling the water supply device based on the first temperature of the compressor, the second temperature of the control circuit board, or the third temperature of the air, thereby spraying water to the heat exchanger through the nozzle device.

[0011] The disclosed garment treatment device and its control method can improve user convenience by preventing the garment treatment device from shutting down due to an increase in temperature within the device during the drying process, thereby increasing overall energy efficiency throughout the process and shortening drying time. Furthermore, the reliability of the garment treatment device itself can be improved.

[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 state in which a nozzle device according to one embodiment of the present disclosure cleans a heat exchanger.

[0018] Figure 7 is a control block diagram of a garment treatment device according to one embodiment.

[0019] Fig. 8 is a flowchart illustrating a control method of a garment treatment device according to one embodiment.

[0020] Fig. 9 is a flowchart that explains in more detail the control according to the temperature of the compressor among the control methods of the clothing treatment device described in Fig. 8.

[0021] Fig. 10 is a flowchart illustrating an embodiment linked to the control method of the clothing treatment device described in Fig. 8.

[0022] Figure 11 is a table briefly showing the control method of the clothing treatment device described in Figures 8 to 10.

[0023] 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.

[0024] In connection with the description of the drawings, similar reference numerals may be used for similar or related components.

[0025] 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.

[0026] 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.

[0027] The term "and / or" includes any combination of a plurality of related described elements or any one of a plurality of related described elements.

[0028] 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).

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] A washing machine may include a drum configured to accommodate laundry.

[0041] 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.

[0042] The drum rotates within the tub and can perform each of the washing, rinsing, and / or dehydration 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] The washing machine may include a communication module for communicating with external devices via wires and / or wirelessly.

[0053] The communication module may include at least one of a short-range communication module or a long-range communication module.

[0054] 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.

[0055] 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).

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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).

[0067] 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).

[0068] 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).

[0069] 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.

[0070] 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.

[0071] The drum (30) can perform each operation according to the washing, rinsing, and / or dehydration process 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).

[0072] 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).

[0073] 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.

[0074] 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.

[0075] In addition, the water supply device (40) may include water supply pipes (43, 44). The water supply pipes (43, 44) may be provided as flexible hoses, plastic pipes, or metal pipes. The water supply pipes (43, 44) may be connected to water supply valves (41, 42). For example, the water supply pipes (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.

[0076] 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).

[0077] 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.

[0078] 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.

[0079] 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.

[0080] 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).

[0081] 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.

[0082] 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).

[0083] The clothing treatment device (1) may include a circulation pump (76) to circulate water in the tub (20) back to the tub (20) through the lower detergent supply device (60).

[0084] 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).

[0085] 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).

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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).

[0090] 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).

[0091] 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.

[0092] 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).

[0093] 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).

[0094] 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).

[0095] 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.

[0096] 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.

[0097] 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'.

[0098] 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).

[0099] 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.

[0100] 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).

[0101] 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).

[0102] 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).

[0103] 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).

[0104] 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).

[0105] 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).

[0106] 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).

[0107] 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).

[0108] 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).

[0109] 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).

[0110] 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.

[0111] 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).

[0112] 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).

[0113] 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.

[0114] 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).

[0115] 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).

[0116] 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).

[0117] 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).

[0118] 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).

[0119] 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).

[0120] 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).

[0121] According to one embodiment, the tub duct (28) 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 outwardly from the outer surface of the tub (20). The duct connection portion (28b) may protrude approximately upwardly from the outer surface of the tub (20).

[0122] The duct connection portion (28b) can connect the drying device (80) and the recessed portion (28a). The duct connection portion (28b) can be connected to the inlet guide (84) of the drying device (80). The duct connection portion (28b) can form a single passage that forms an exhaust path (P) together with the recessed portion (28a) and the duct cover (29).

[0123] The duct connection portion (28b) may be covered by a duct cover (29). The duct connection portion (28b) may have one side open. The duct cover (29) may cover the open side of the duct connection portion (28b).

[0124] The duct cover (29) can cover both the recessed portion (28a) and the duct connection portion (28b). For example, the duct cover (29) can cover both the open side of the recessed portion (28a) and the open 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). For example, the duct cover (29) can cover only the recessed portion (28a).

[0125] The duct cover (29) may be provided to cover the open rear surface of the recessed portion (28a) and / or the open rear surface of the duct connection portion (28b). The exhaust passage (P) may be a single passage formed by the tub duct (28) and the duct cover (29).

[0126] 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).

[0127] 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.

[0128] 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. 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.

[0129] 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.

[0130] The garment treatment device (1) may include various temperature sensors (400). For example, the garment treatment device (1) may include at least one of a compressor temperature sensor (410) that detects the temperature of a compressor (91), a control circuit temperature sensor (420) that detects the temperature of a control circuit, and an air temperature sensor (430) that detects the temperature of air discharged from a drum.

[0131] The compressor temperature sensor (410) may include a discharge temperature sensor (411) that detects the discharge temperature of the compressor (91) and a case temperature sensor (412) that detects the case temperature of the compressor (91). The discharge temperature sensor (411) may be provided in a discharge refrigerant pipe through which refrigerant is discharged from the compressor. The case temperature sensor (412) may be provided on the surface of the case of the compressor (91). The case temperature sensor (412) may be provided on the upper side of the case of the compressor (91).

[0132] The control circuit may be provided at various locations within the housing (10) of the garment treatment device (1). The control circuit may include a printed circuit board and may also be referred to as a control circuit board. For example, the control circuit board may be located at the rear of the control panel (100) within the housing (10). The control circuit board may be coupled to the control panel (100). The control circuit temperature sensor (420) may be provided at a location adjacent to the control circuit board within the housing (10). That is, the control circuit temperature sensor (420) may be provided at a location adjacent to the control panel (100).

[0133] The air temperature sensor (430) can be coupled to the drying case (81). The air temperature sensor (430) can protrude downward from the lower surface of the drying case (81). The air temperature sensor (430) can be positioned on the inlet passage (85) through which air discharged from the drum (30) flows. The air temperature sensor (430) can detect the temperature of the air discharged from the drum (30). That is, the air temperature sensor (430) can measure the temperature of the internal air flowing inside the housing (10).

[0134] Additionally, the temperature sensor (400) may include an outside temperature sensor that detects the outside temperature.

[0135] FIG. 6 illustrates a state in which a nozzle device according to one embodiment of the present disclosure cleans a heat exchanger.

[0136] Referring to FIG. 6, a nozzle device (96) according to one embodiment may be configured to clean a heat exchanger (92, 93). The nozzle device (96) may be configured to clean a portion of the heat exchanger (92, 93) into which air is introduced. 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 a portion of the evaporator (93) into which air is introduced.

[0137] The nozzle device (96) can be connected to the water supply device (40), and water can be supplied from the water supply device (40) to the nozzle device (96). The nozzle device (96) can be connected to a water supply pipe (43, 44). The water supply pipe (43, 44) can form a water supply path for supplying water to the nozzle device (96). The water supply valve (41, 42) can open or close the water supply path.

[0138] For example, the water supply device (40) may include a hot water valve (41), a cold water valve (42), a hot water pipe (43), and a cold water pipe (44). The hot water valve (41) may be referred to as a first water supply valve. The cold water valve (42) may be referred to as a second water supply valve. The hot water pipe (43) may be referred to as a first water supply path. The cold water pipe (44) may be referred to as a second water supply path.

[0139] The nozzle device (96) may be connected to a cold water pipe (44). When the cold water valve (42) is opened, cold water may be supplied from an external water source to the nozzle device (96) through the cold water pipe (44). Alternatively, the nozzle device (96) may be connected to a hot water pipe (43). When the hot water valve (41) is opened, hot water may be supplied to the nozzle device (96) through the hot water pipe (43).

[0140] Figure 7 is a control block diagram of a garment treatment device according to one embodiment.

[0141] 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 a driving device (36), a water supply device (40), a drainage pump (71), a circulation pump (76), and a drying device (80). The control unit (300) may be electrically connected to a control panel (100), a communication interface (150), a water level sensor (200), and a temperature sensor (400). The control unit (300) may control the control panel (100), the communication interface (150), the water level sensor (200), and the temperature sensor (400).

[0142] Additionally, the clothing treatment device (1) may include a refrigerant pressure sensor (500) that detects the pressure of the refrigerant discharged from the compressor (91). The control unit (300) may be electrically connected to the refrigerant pressure sensor (500) and may control the refrigerant pressure sensor (500).

[0143] 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).

[0144] 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).

[0145] 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).

[0146] 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.

[0147] 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.).

[0148] 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.

[0149] 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.).

[0150] 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.

[0151] 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.

[0152] Meanwhile, the control unit (300) can automatically perform cleaning of the heat exchanger (92, 93) included in the drying device (80) before completing the drying process. For cleaning the heat exchanger, the control unit (300) can control the water supply valve (42) so that water is sprayed from the nozzle device (96) to the heat exchanger (92, 93) for a predetermined heat exchanger cleaning time.

[0153] The disclosed clothing treatment device (1) can remove contamination (e.g., dust, lint) from the heat exchanger (92, 93) and keep the heat exchanger (92, 93) clean by cleaning the heat exchanger (92, 93) every time a drying process is performed. The heat exchanger cleaning can be performed for a set heat exchanger cleaning time. The drying process can be terminated after the heat exchanger cleaning is completed.

[0154] A heat exchanger cleaning course may be provided to separately perform cleaning of the heat exchanger (92, 93) regardless of whether a drying process is performed. When the heat exchanger cleaning course is selected through the control panel (100) or an external user device, the control unit (300) can perform cleaning of the heat exchanger (92, 93).

[0155] Additionally, heat exchanger cleaning may be performed to prevent overheating of the garment treatment device (1). In other words, heat exchanger cleaning may be performed to reduce the internal temperature of the garment treatment device (1).

[0156] For cleaning the heat exchanger, water may be sprayed through the nozzle device (96) for a predetermined spray time (e.g., 1 second). After the spray time has elapsed, the spraying of water through the nozzle device (96) may be paused for a predetermined time interval (e.g., 3 seconds). One heat exchanger cleaning may include spraying water on the heat exchanger (92, 93) for the spray time (e.g., 1 second) and stopping the spraying of water for a predetermined time interval (e.g., 3 seconds). When the heat exchanger cleaning is performed multiple times, water may be sprayed through the nozzle device (96) for the spray time at predetermined time intervals (e.g., 3 seconds).

[0157] 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).

[0158] 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).

[0159] 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.

[0160] 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).

[0161] 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).

[0162] 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).

[0163] The water supply device (40) 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.

[0164] 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). The second water supply valve (42) can open or close the second water supply pipe (44) based on an electrical signal transmitted from the control unit (300).

[0165] The water supply pipes (43, 44) can form a water supply path for supplying water to the nozzle device (96). For example, the nozzle device (96) can be connected to the first water supply pipe (43) and / or the second water supply pipe (44). When the nozzle device (96) is connected to the first water supply pipe (43), water can flow into the nozzle device (96) when the first water supply valve (41) is opened. When the nozzle device (96) is connected to the second water supply pipe (44), water can flow into the nozzle device (96) when the second water supply valve (41) is opened.

[0166] 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).

[0167] 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).

[0168] 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.

[0169] 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).

[0170] 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 (300) 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).

[0171] The control unit (300) can control the water supply device (40) to clean the heat exchanger (92, 93) of the drying device (80). For example, 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). As the second water supply valve (42) opens, water can be sprayed from the nozzle device (96) to the heat exchanger (92, 93).

[0172] The garment treatment device (1) may include various temperature sensors (400). For example, the garment treatment device (1) may include at least one of a compressor temperature sensor (410) that detects the temperature of a compressor (91), a control circuit temperature sensor (420) that detects the temperature of a control circuit, and an air temperature sensor (430) that detects the temperature of air discharged from a drum. The temperature sensor may transmit an electrical signal corresponding to the detected temperature to the control unit (300).

[0173] The compressor temperature sensor (410) may include a discharge temperature sensor (411) that detects the discharge temperature of the compressor (91) and a case temperature sensor (412) that detects the case temperature of the compressor (91). The discharge temperature sensor (411) may be provided in a discharge refrigerant pipe through which refrigerant is discharged from the compressor. The case temperature sensor (412) may be provided on the surface of the case of the compressor. The case temperature sensor (412) may be provided on the upper side of the case of the compressor (91).

[0174] The control circuit may be provided at various locations within the housing (10) of the garment treatment device (1). The control circuit may include a printed circuit board and may also be referred to as a control circuit board. For example, the control circuit board may be located at the rear of the control panel (100) within the housing (10). The control circuit board may be coupled to the control panel (100). The control circuit temperature sensor (420) may be provided at a location adjacent to the control circuit board within the housing (10). That is, the control circuit temperature sensor (420) may be provided at a location adjacent to the control panel (100).

[0175] An air temperature sensor (430) can be coupled to the drying case (81). The air temperature sensor (430) can be positioned on the inlet path (85) through which air discharged from the drum (30) flows. The air temperature sensor (430) can detect the temperature of the air discharged from the drum (30). That is, the air temperature sensor (430) can measure the temperature of the internal air flowing inside the housing (10).

[0176] The compressor temperature sensor (410) may be referred to as a first temperature sensor. The control circuit temperature sensor (420) may be referred to as a second temperature sensor. The air temperature sensor (430) may be referred to as a third temperature sensor. Alternatively, the discharge temperature sensor (411) may be referred to as a first temperature sensor, the case temperature sensor (412) may be referred to as a second temperature sensor, the control circuit temperature sensor (420) may be referred to as a third temperature sensor, and the air temperature sensor (430) may be referred to as a fourth temperature sensor.

[0177] The type of temperature sensor (400) is not limited to the examples. The temperature sensor (400) may further include an outside temperature sensor that detects the outside temperature.

[0178] Additionally, the garment treatment device (1) may include a refrigerant pressure sensor (500) that detects the pressure of the refrigerant discharged from the compressor (91). The temperature of the refrigerant may correspond to the pressure of the refrigerant. The control unit (300) may also determine the discharge temperature of the compressor (91) based on the pressure of the refrigerant detected by the refrigerant pressure sensor (500).

[0179] The internal temperature of the garment treatment device (1) may increase when the drying process is performed. Furthermore, the external temperature may also affect the internal temperature of the garment treatment device (1). If the garment treatment device (1) overheats, various components within the garment treatment device (1) may be damaged. For example, the compressor (91) and the control circuit may be damaged. To prevent this, the garment treatment device (1) may stop the drying process if the internal temperature reaches a temperature limit during the drying process. If the drying process is stopped before completion, problems such as reduced drying efficiency and reduced user convenience may occur.

[0180] In order to prevent the operation of the clothing treatment device (1) from stopping due to an increase in the temperature inside the clothing treatment device (1) during the drying process, the clothing treatment device (1) may spray water into the heat exchanger (92, 93). The temperature of the water supplied to the heat exchanger (92, 93) may correspond to the temperature of average tap water. The temperature of the water supplied to the heat exchanger (92, 93) may be lower than the temperature of the heat exchanger (92, 93). As water is sprayed into the heat exchanger (92, 93), the internal temperature of the clothing treatment device (1) may decrease.

[0181] When cold water is sprayed on the heat exchanger (92, 93), the evaporation of the refrigerant in the evaporator (93) may decrease, and the flow rate of the refrigerant may decrease. As the flow rate of the refrigerant decreases, the temperature of the compressor (91) may decrease. In addition, the temperature of the heat exchanger (92, 93) may also decrease, and the temperature of the air passing through the heat exchanger (92, 93) (i.e., the air discharged from the drum (30) and introduced into the heat exchanger (92, 93)) may also decrease. Since the components that generate heat within the housing (10) of the clothing treatment device (1) can be cooled, the protective control due to overheating may not be executed.

[0182] In other words, if the internal temperature of the garment treatment device (1) decreases, the protective control to prevent damage to the garment treatment device (1) due to overheating may not be performed. By preventing the protective control from being executed due to an increase in the internal temperature of the housing (10), the garment treatment device (1) can improve user convenience, increase energy efficiency of the entire drying process, and shorten the drying time. In addition, the reliability of the garment treatment device (1) itself can also be improved.

[0183] In order to prevent the operation of the clothing treatment device (1) from stopping due to overheating during the drying process, the control unit (300) can control the water supply device (40) so that water is sprayed to the heat exchanger (92, 93) through the nozzle device (96) according to predetermined conditions during the drying process.

[0184] For example, the control unit (300) may control the water supply device (40) to spray water to the heat exchanger (92, 93) through the nozzle device (96) based on the first temperature of the compressor (91) detected by the compressor temperature sensor (410) during the drying process, the second temperature of the control circuit detected by the control circuit temperature sensor (420), or the third temperature of the air discharged from the drum (30) detected by the air temperature sensor (430). As described above, the first temperature of the compressor (91) may also be determined based on the pressure of the refrigerant detected by the refrigerant pressure sensor (500).

[0185] When the first temperature of the compressor (91) is higher than the first critical temperature, when the second temperature of the control circuit is higher than the second critical temperature, or when the third temperature of the air discharged from the drum (30) is higher than the third critical temperature, the control unit (300) can control the water supply device (40) to supply water to the heat exchanger (92, 93) for a predetermined injection time. The predetermined injection time can be varied depending on the design.

[0186] During the drying process, the temperature change of the compressor (91), the temperature change of the control circuit, and the temperature change of the air discharged from the drum (30) may be different from each other. Therefore, the first critical temperature, the second critical temperature, and the third critical temperature may be set differently from each other.

[0187] As described above, the compressor temperature sensor (410) may include a discharge temperature sensor (411) for detecting the discharge temperature of the compressor (91) and / or a case temperature sensor (412) for detecting the case temperature of the compressor (91). The first temperature of the compressor (91) may correspond to the discharge temperature of the compressor (91) or the case temperature of the compressor (91). Accordingly, when the discharge temperature of the compressor (91) or the case temperature of the compressor (91) is equal to or higher than the first threshold temperature, the control unit (300) may control the water supply device (40) to supply water to the heat exchanger (92, 93) for a predetermined injection time.

[0188] As another example, the critical temperature for the discharge temperature of the compressor (91) and the critical temperature for the case temperature of the compressor (91) may be set differently. That is, when the discharge temperature of the compressor (91) is equal to or higher than the first critical temperature or when the case temperature of the compressor (91) is equal to or higher than the fourth critical temperature, the control unit (300) may control the water supply device (40) to supply water to the heat exchanger (92, 93) for a predetermined injection time.

[0189] In order to lower the temperature inside the clothing treatment device (1), the control unit (300) can control the water supply device (40) so that water is sprayed onto the heat exchanger (92, 93) at least once. For example, the control unit (300) can control the water supply device (40) so that water is sprayed onto the heat exchanger (92, 93) once at a predetermined time interval for a predetermined number of times. Spraying water onto the heat exchanger (92, 93) once can include spraying water onto the heat exchanger (92, 93) for a spraying time (e.g., 1 second) and stopping the spraying of water for a predetermined time interval (e.g., 3 seconds).

[0190] The control unit (300) can control the compressor temperature sensor (410), the control circuit temperature sensor (420), and the air temperature sensor (430) to re-detect the first temperature of the compressor (91), the second temperature of the control circuit, and the third temperature of the air discharged from the drum (30) based on the elapse of a predetermined waiting time after water injection into the heat exchanger (92, 93) is performed at least once.

[0191] According to the experiment, the first temperature of the compressor (91) cannot reach the first critical temperature within the waiting time after water is sprayed into the heat exchanger (92, 93). The second temperature of the control circuit cannot reach the second critical temperature within the waiting time after water is sprayed into the heat exchanger (92, 93). The third temperature of the air discharged from the drum (30) cannot reach the third critical temperature within the waiting time after water is sprayed into the heat exchanger (92, 93).

[0192] Meanwhile, depending on the user's usage, there may be situations where the drying process is performed continuously. For example, there may be cases where the drying process is performed again within a relatively short period of time from the time the previous drying process was completed. When multiple drying processes are performed at relatively short time intervals, the next drying process may be performed while the garment treatment device (1) has not been sufficiently cooled after the completion of the previous drying process. In this case, the internal temperature of the garment treatment device (1) may be relatively high from the start of the drying process. Therefore, when the drying process is performed continuously, it is desirable to first reduce the internal temperature of the garment treatment device (1) at the beginning of the drying process.

[0193] The control unit (300) can determine an average temperature for the first temperature of the compressor (91) based on the fact that the elapsed time from the end time of the previous drying process to the start time of the drying process is shorter than a predetermined threshold time. The control unit (300) can determine an average temperature for the first temperature of the compressor (91) for a predetermined reference time from the start time of the drying process. The average temperature for the first temperature of the compressor (91) can include an average value of the discharge temperature of the compressor (91) or an average value of the case temperature of the compressor (91).

[0194] The control unit (300) can control the water supply device (40) to spray water into the heat exchanger (92, 93) based on the average temperature of the first temperature of the compressor (91) being higher than the reference temperature. The reference temperature of the average temperature of the compressor (91) may be lower than the first critical temperature of the first temperature of the compressor (91). By setting the reference temperature of the average temperature relatively low, water can be sprayed into the heat exchanger (92, 93) even at the beginning of the drying process, and the internal temperature of the clothing treatment device (1) can be reduced. The beginning of the drying process may correspond to a predetermined time interval from the start of the drying process.

[0195] In addition, multiple reference temperatures may be set for the average temperature of the compressor (91). For example, the reference temperature for the average temperature of the compressor (91) may include a first reference temperature and a second reference temperature. The first reference temperature may be determined to be higher than the second reference temperature. The internal temperature of the clothing treatment device (1) may vary depending on the surrounding environment of the clothing treatment device (1) and the operation of the clothing treatment device (1). Therefore, by setting multiple reference temperatures for the average temperature of the compressor (91), the internal temperature of the clothing treatment device (1) can be appropriately controlled at the beginning of the drying process.

[0196] Although it has been exemplified that water is sprayed into the heat exchanger (92, 93) at the beginning of the drying process when the drying process is performed continuously, this is not a limitation. Regardless of whether the drying process is performed continuously, if the average temperature of the compressor (91) is higher than the reference temperature at the beginning of the drying process, the water supply device (40) can be controlled to spray water into the heat exchanger (92, 93).

[0197] While water is being sprayed into the heat exchanger (92, 93), the control unit (300) may operate the fan (87a). The control unit (300) may also adjust the rotation speed of the fan (87a) in response to the time of spraying water into the heat exchanger (92, 93). For example, the control unit (300) may reduce the rotation speed of the fan (87a) while water is being sprayed into the heat exchanger (92, 93). If the rotation speed of the fan (87a) is relatively high, air flows quickly, which may make it difficult for water sprayed into the heat exchanger (92, 93) to enter the drain line (97).

[0198] Although the operation of the garment treatment device (1) has been described as being controlled by the control unit (300), it is not limited thereto. The operation of the garment treatment device (1) may also be described as being controlled by the processor (310). In order for the garment treatment device (1) to perform various operations, the processor (310) may execute various instructions stored in the memory (320).

[0199] Fig. 8 is a flowchart illustrating a control method of a garment treatment device according to one embodiment. Fig. 9 is a flowchart illustrating in more detail the control according to the temperature of the compressor among the control methods of the garment treatment device described in Fig. 8.

[0200] Referring to Fig. 8, after the drying process begins, the control unit (300) of the clothing treatment device (1) can determine whether the first temperature of the compressor (91) detected by the compressor temperature sensor (410) is higher than or equal to the first threshold temperature (801). If the first temperature of the compressor (91) is higher than or equal to the first threshold temperature, the control unit (300) can control the water supply device (40) to spray water to the heat exchanger (92, 93) (802).

[0201] When the first temperature of the compressor (91) is lower than the first critical temperature, the control unit (300) can determine whether the second temperature of the control circuit detected by the control circuit temperature sensor (420) is higher than or equal to the second critical temperature (803). When the second temperature of the control circuit is higher than or equal to the second critical temperature, the control unit (300) can control the water supply device (40) to spray water to the heat exchanger (92, 93) (804).

[0202] If the second temperature of the control circuit is lower than the second critical temperature, the control unit (300) can determine whether the third temperature of the air detected by the air temperature sensor (430) is higher than or equal to the third critical temperature (805). If the third temperature of the air is lower than the third critical temperature, the control unit (300) can control the water supply device (40) to spray water to the heat exchanger (92, 93) (806).

[0203] During the drying process, the temperature change of the compressor (91), the temperature change of the control circuit, and the temperature change of the air discharged from the drum (30) may be different from each other. Therefore, the first critical temperature, the second critical temperature, and the third critical temperature may be set differently from each other.

[0204] The control unit (300) can determine whether the drying process is complete (807). Completion of the drying process can be determined in various ways. For example, the drying process can be determined to be complete when the drying time set according to the drying course has elapsed. The drying process can also be determined to be complete when the dryness of the object to be dried reaches a predetermined standard dryness level.

[0205] The control unit (300) can periodically monitor the first temperature of the compressor (91), the second temperature of the control circuit, and the third temperature of the air discharged from the drum (30) until the drying process is completed.

[0206] The control unit (300) can control the compressor temperature sensor (410), the control circuit temperature sensor (420), and the air temperature sensor (430) to re-detect the first temperature of the compressor (91), the second temperature of the control circuit, and the third temperature of the air discharged from the drum (30) based on the elapse of a predetermined waiting time after water injection into the heat exchanger (92, 93) is performed at least once.

[0207] Since excessive water spraying into the heat exchanger (92, 93) may reduce the dryness of the object to be dried, a waiting time may be set to prevent this. By preventing water from being sprayed into the heat exchanger (92, 93) during the waiting time after water has been sprayed into the heat exchanger (92, 93) at least once, excessive water spraying into the heat exchanger (92, 93) can be prevented.

[0208] As described above, the first temperature of the compressor (91) may correspond to the discharge temperature of the compressor (91) or the case temperature of the compressor (91).

[0209] Referring to FIG. 9, after the drying process begins, the control unit (300) can determine whether the discharge temperature of the compressor (91) is higher than or equal to the first threshold temperature (901). If the discharge temperature of the compressor (91) is higher than or equal to the first threshold temperature, the control unit (300) can control the water supply device (40) to spray water into the heat exchanger (92, 93) (902).

[0210] When the discharge temperature of the compressor (91) is lower than the first critical temperature, the control unit (300) can determine whether the case temperature of the compressor (91) is higher than or equal to the fourth critical temperature (903). When the case temperature of the compressor (91) is higher than or equal to the fourth critical temperature, the control unit (300) can control the water supply device (40) to spray water to the heat exchanger (92, 93) (904). The first critical temperature for the discharge temperature of the compressor (91) and the fourth critical temperature for the case temperature of the compressor (91) may be set to be the same or different from each other.

[0211] When the case temperature of the compressor (91) is lower than the fourth critical temperature, the control unit (300) can enter operation 803.

[0212] Although it is illustrated in FIGS. 8 and 9 that the first temperature of the compressor (91), the second temperature of the control circuit, and the third temperature of the air discharged from the drum (30) are detected in sequence, this is not limited thereto. The first temperature of the compressor (91), the second temperature of the control circuit, and the third temperature of the air discharged from the drum (30) may be detected independently. The first temperature of the compressor (91), the second temperature of the control circuit, and the third temperature of the air discharged from the drum (30) may be detected simultaneously or at different times.

[0213] Likewise, the discharge temperature of the compressor (91) and the case temperature of the compressor (91) can also be detected independently. The discharge temperature of the compressor (91) and the case temperature of the compressor (91) can be detected simultaneously or at different times.

[0214] Fig. 10 is a flowchart illustrating an embodiment linked to the control method of the clothing treatment device described in Fig. 8.

[0215] Referring to FIG. 10, the control unit (300) of the garment treatment device (1) can calculate the elapsed time from the end point of the previous drying process. In other words, the control unit (300) can determine the elapsed time from the end point of the previous drying process to the start point of the drying process (1001).

[0216] The control unit (300) can compare the elapsed time from the end of the previous drying cycle to the start of the drying cycle with a predetermined threshold time (1002). By reflecting the elapsed time since the end of the previous drying cycle, the clothing treatment device (1) can more accurately determine the internal temperature of the clothing treatment device (1).

[0217] The control unit (300) can determine an average temperature for the first temperature of the compressor (91) based on the fact that the elapsed time from the end point of the previous drying process to the start point of the drying process is shorter than a predetermined threshold time. The control unit (300) can determine an average temperature for the first temperature of the compressor (91) for a predetermined reference time (e.g., 2 minutes) from the start point of the drying process (1003).

[0218] The control unit (300) can determine whether the average temperature of the first temperature of the compressor (91) is higher than or equal to the reference temperature (1004). If the average temperature of the first temperature of the compressor (91) is higher than or equal to the reference temperature, the control unit (300) can control the water supply device (40) to inject water into the heat exchanger (92, 93) at least once (1005). The step of injecting water into the heat exchanger (92, 93) at the beginning of the drying process may also be referred to as a 'pre-cooling step'.

[0219] Thereafter, the control unit (300) may enter operation 801 to determine whether the first temperature of the compressor (91) is higher than or equal to the first critical temperature as the drying process progresses. The step of spraying water to the heat exchanger (92, 93) based on the first temperature of the compressor (91), the second temperature of the control circuit, or the third temperature of the air discharged from the drum (30) may be referred to as a 'main-cooling step'.

[0220] If the average temperature of the first temperature of the compressor (91) is lower than the reference temperature, the control unit (300) can immediately enter operation 801.

[0221] The reference temperature for the average temperature of the first temperature of the compressor (91) may be lower than the first critical temperature for the first temperature of the compressor (91) described in FIGS. 8 and 9. By setting the reference temperature for the average temperature relatively low, water can be sprayed to the heat exchanger (92, 93) even at the beginning of the drying process, and the internal temperature of the clothing treatment device (1) can be reduced. The beginning of the drying process may correspond to a certain time (i.e., the reference time) from the start of the drying process.

[0222] Meanwhile, the average temperature of the first temperature of the compressor (91) during the reference time from the start of the drying process may be determined regardless of the elapsed time from the end of the previous drying process to the start of the drying process. The elapsed time from the end of the previous drying process to the start of the drying process may be counted to determine whether the drying process is performed continuously. Regardless of whether the drying process is performed continuously, if the average temperature of the compressor (91) is higher than the reference temperature at the beginning of the drying process, the water supply device (40) may be controlled to spray water to the heat exchanger (92, 93).

[0223] Figure 11 is a table briefly showing the control method of the clothing treatment device described in Figures 8 to 10.

[0224] Referring to table (1100) of Fig. 11, the clothing treatment device (1) can control the water supply device (40) to spray water to the heat exchanger (92, 93) based on the discharge temperature of the compressor (91) being T1°C or higher while the drying process is in progress (n1 operation).

[0225] While the drying process is in progress, the clothing treatment device (1) can control the water supply device (40) to spray water to the heat exchanger (92, 93) based on the temperature of the case of the compressor (91) being T2°C or higher (n2 operation).

[0226] While the drying process is in progress, the clothing treatment device (1) can control the water supply device (40) to spray water to the heat exchanger (92, 93) based on the temperature of the control circuit being T3℃ or higher (n3 operation).

[0227] While the drying process is in progress, the clothing treatment device (1) can control the water supply device (40) to spray water to the heat exchanger (92, 93) based on the temperature of the air discharged from the drum (30) being T4°C or higher (n4 operation).

[0228] T1℃ may correspond to the first critical temperature described above. T2℃ may correspond to the fourth critical temperature described above. T3℃ may correspond to the second critical temperature described above. T4℃ may correspond to the third critical temperature described above. The first critical temperature, the second critical temperature, the third critical temperature, and the fourth critical temperature may be set to various values ​​depending on the design.

[0229] In the n1 operation, the n2 operation, the n3 operation, and the n4 operation, the clothing treatment device (1) can control the water supply device (40) to spray water to the heat exchanger (92, 93) for a predetermined spray time. In addition, the clothing treatment device (1) can control the water supply device (40) to spray water to the heat exchanger (92, 93) one or more times at predetermined time intervals. The spray time and the time interval can be adjusted. For example, the spray time can be set to 1 second, and the time interval can be set to 3 seconds.

[0230] After the n1 operation, the n2 operation, the n3 operation, and the n4 operation, the clothing treatment device (1) can detect again at least one of the discharge temperature of the compressor (91), the compressor (91) case temperature, the temperature of the control circuit, and the temperature of the air discharged from the drum (30) based on the elapse of a predetermined waiting time. By setting the waiting time, it is possible to prevent excessive water from being sprayed onto the heat exchanger (92, 93). Since the dryness of the object to be dried may decrease if excessive water is sprayed onto the heat exchanger (92, 93), the waiting time can be set to prevent this.

[0231] The clothing treatment device (1) can spray water into the heat exchanger (92, 93) even at the beginning of the drying process. The beginning of the drying process may correspond to a predetermined time period from the start of the drying process.

[0232] The clothing treatment device (1) can control the water supply device (40) to spray water to the heat exchanger (92, 93) based on the average temperature of the compressor (91) being equal to or higher than a first reference temperature (T5°C) set in advance at the beginning of the drying process (n5 operation). The clothing treatment device (1) can determine the average temperature of the compressor (91) for a predetermined reference time from the start of the drying process. The average temperature of the compressor (91) can include an average value of the discharge temperature of the compressor (91) or an average value of the case temperature of the compressor (91).

[0233] The clothing treatment device (1) can control the water supply device (40) to spray water to the heat exchanger (92, 93) based on the average temperature of the compressor (91) being higher than a predetermined second reference temperature (T6°C) at the beginning of the drying process (n6 operation). The first reference temperature (T5°C) can be set higher than the second reference temperature (T6°C).

[0234] In the n5 and n6 operations, the clothing treatment device (1) can control the water supply device (40) to spray water to the heat exchanger (92, 93) for a predetermined spray time. In addition, the clothing treatment device (1) can control the water supply device (40) to spray water to the heat exchanger (92, 93) for a predetermined spray time at least once at predetermined time intervals.

[0235] The first reference temperature (T5℃) and the second reference temperature (T6℃) can be set lower than the first critical temperature (T1℃), the second critical temperature (T3℃), the third critical temperature (T4℃), and the fourth critical temperature (T2℃).

[0236] In one embodiment, a garment treatment device may include: a drum; a heat exchanger disposed on an upper portion of the drum; a compressor for supplying refrigerant to the heat exchanger; a nozzle device configured to spray water onto the heat exchanger; a water supply device for supplying water to the nozzle device; a compressor temperature sensor for detecting a first temperature of the compressor; a control circuit temperature sensor for detecting a second temperature of a control circuit; an air temperature sensor for detecting a third temperature of air discharged from the drum; and a control unit for controlling the water supply device to spray water onto the heat exchanger through the nozzle device during a drying cycle based on the first temperature of the compressor, the second temperature of the control circuit, or the third temperature of the air discharged from the drum.

[0237] The control unit can control the water supply device to supply the water for a predetermined injection time based on whether the first temperature of the compressor is equal to or higher than a first threshold temperature, whether the second temperature of the control circuit is equal to or higher than a second threshold temperature, or whether the third temperature of the air discharged from the drum is equal to or higher than a third threshold temperature.

[0238] The control unit may determine an average temperature of the compressor with respect to the first temperature for a predetermined reference time from the start of the drying process. The control unit may control the water supply device to spray water into the heat exchanger based on the average temperature of the first temperature being equal to or greater than the reference temperature. The reference temperature of the average temperature may be lower than the first threshold temperature of the compressor with respect to the first temperature.

[0239] The control unit can determine the average temperature with respect to the first temperature based on the elapsed time from the end point of the previous drying process to the start point of the drying process being shorter than a predetermined threshold time.

[0240] The compressor temperature sensor may include a discharge temperature sensor for detecting a discharge temperature of the compressor or a case temperature sensor for detecting a case temperature of the compressor. The first temperature of the compressor may correspond to the discharge temperature of the compressor or the case temperature of the compressor.

[0241] The above control unit can control the water supply device so that the water injection into the heat exchanger is performed a predetermined number of times once at a predetermined time interval.

[0242] The control unit can control the compressor temperature sensor, the control circuit temperature sensor, and the air temperature sensor to re-detect the first temperature of the compressor, the second temperature of the control circuit, and the third temperature of the air discharged from the drum based on the elapse of a predetermined waiting time after water is sprayed into the heat exchanger at least once.

[0243] The above garment treatment device may include a fan for causing air to flow into the interior of the drum. The control unit may adjust the rotation speed of the fan while water is sprayed into the heat exchanger.

[0244] The above clothing treatment device may include a refrigerant pressure sensor that detects the pressure of the refrigerant discharged from the compressor. The control unit may determine the first temperature of the compressor based on the pressure of the refrigerant.

[0245] In a method for controlling a garment treatment device including a heat exchanger disposed on the upper part of a drum, a compressor for supplying refrigerant to the heat exchanger, a nozzle device provided to spray water onto the heat exchanger, and a water supply device for supplying water to the nozzle device, the method for controlling a garment treatment device according to one embodiment may include: starting a drying process based on selection of a drying course through a control panel or an external user device; controlling a compressor temperature sensor to detect a first temperature of the compressor; controlling a control circuit temperature sensor to detect a second temperature of the control circuit; controlling an air temperature sensor to detect a third temperature of air discharged from the drum; and controlling the water supply device based on the first temperature of the compressor, the second temperature of the control circuit, or the third temperature of the air, thereby spraying water onto the heat exchanger through the nozzle device.

[0246] Injecting water into the heat exchanger may be performed for a predetermined injection time based on whether the first temperature of the compressor is equal to or higher than a first threshold temperature, whether the second temperature of the control circuit is equal to or higher than a second threshold temperature, or whether the third temperature of the air discharged from the drum is equal to or higher than a third threshold temperature.

[0247] The control method may further include determining an average temperature of the compressor with respect to the first temperature for a predetermined reference time from the start time of the drying process; and controlling the water supply device based on the average temperature of the first temperature being equal to or greater than a reference temperature, thereby injecting water into the heat exchanger. The reference temperature of the average temperature may be lower than the first threshold temperature of the compressor with respect to the first temperature.

[0248] Determining the average temperature with respect to the first temperature may be performed based on the elapsed time from the end time of the previous drying process to the start time of the drying process being shorter than a predetermined threshold time.

[0249] The compressor temperature sensor may include a discharge temperature sensor for detecting a discharge temperature of the compressor or a case temperature sensor for detecting a case temperature of the compressor. The first temperature of the compressor may correspond to the discharge temperature of the compressor or the case temperature of the compressor.

[0250] Spraying water into the above heat exchanger can be performed a predetermined number of times, once at predetermined time intervals.

[0251] The first temperature of the compressor, the second temperature of the control circuit and the third temperature of the air discharged from the drum can be detected again based on the elapse of a predetermined waiting time after water injection into the heat exchanger is performed at least once.

[0252] The above control method may further include controlling the rotation speed of a fan that flows air into the interior of the drum while water is sprayed into the heat exchanger.

[0253] The above control method may further include controlling a refrigerant pressure sensor to determine the pressure of the refrigerant discharged from the compressor. The first temperature of the compressor may be determined based on the pressure of the refrigerant.

[0254] The disclosed garment treatment device and its control method can improve user convenience by preventing the garment treatment device from shutting down due to an increase in temperature within the device during the drying process, thereby increasing overall energy efficiency throughout the process and shortening drying time. Furthermore, the reliability of the garment treatment device itself can be improved.

[0255] Meanwhile, the disclosed embodiments may be implemented in the form of a storage 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.

[0256] A device-readable storage 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.

[0257] The methods according to various embodiments disclosed in this 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 storage 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 in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

[0258] 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. Drum; A heat exchanger placed on the upper part of the drum; A compressor for supplying refrigerant to the above heat exchanger; A nozzle device provided to spray water into the above heat exchanger; A water supply device that supplies water to the above nozzle device; A compressor temperature sensor for detecting a first temperature of the compressor; A control circuit temperature sensor that detects a second temperature of the control circuit; An air temperature sensor detecting a third temperature of air discharged from the drum; and A garment treatment device including a control unit that controls the water supply device to spray water to the heat exchanger through the nozzle device based on the first temperature of the compressor, the second temperature of the control circuit, or the third temperature of the air discharged from the drum during the drying process.

2. In paragraph 1, The above control unit A garment treatment device that controls the water supply device to supply water for a predetermined injection time based on whether the first temperature of the compressor is equal to or higher than a first threshold temperature, whether the second temperature of the control circuit is equal to or higher than a second threshold temperature, or whether the third temperature of the air discharged from the drum is equal to or higher than a third threshold temperature.

3. In paragraph 2, The above control unit Determine the average temperature of the first temperature of the compressor for a predetermined reference time from the start of the drying process, The water supply device is controlled to spray water into the heat exchanger based on the average temperature of the first temperature being higher than the reference temperature. A clothing treatment device, wherein the reference temperature with respect to the average temperature is lower than the first critical temperature with respect to the first temperature of the compressor.

4. In paragraph 3, The above control unit A clothing treatment device that determines the average temperature with respect to the first temperature based on the elapsed time from the end point of the previous drying process to the start point of the drying process being shorter than a predetermined threshold time.

5. In paragraph 1, The above compressor temperature sensor Including a discharge temperature sensor for detecting the discharge temperature of the compressor or a case temperature sensor for detecting the case temperature of the compressor, The first temperature of the above compressor is A clothes treatment device corresponding to the discharge temperature of the compressor or the case temperature of the compressor.

6. In paragraph 1, The above control unit A clothes treatment device that controls the water supply device so that water is sprayed into the heat exchanger a predetermined number of times once at predetermined time intervals.

7. In paragraph 1, The above control unit A clothes treatment device that controls the compressor temperature sensor, the control circuit temperature sensor and the air temperature sensor to re-detect the first temperature of the compressor, the second temperature of the control circuit and the third temperature of the air discharged from the drum based on the elapse of a predetermined waiting time after water injection into the heat exchanger is performed at least once.

8. In paragraph 1, including a fan for flowing air into the interior of the drum; The above control unit A clothes treatment device that controls the rotation speed of the fan while water is sprayed into the heat exchanger.

9. In paragraph 1, A refrigerant pressure sensor for detecting the pressure of refrigerant discharged from the compressor; The above control unit A clothes treatment device that determines the first temperature of the compressor based on the pressure of the refrigerant.

10. A method for controlling a clothes treatment device including a heat exchanger arranged on the upper part of a drum, a compressor supplying refrigerant to the heat exchanger, a nozzle device provided to spray water to the heat exchanger, and a water supply device supplying water to the nozzle device. Starting the drying process based on selection of the drying course via the control panel or an external user device; Controlling the compressor temperature sensor to detect the first temperature of the compressor; Controlling the control circuit temperature sensor to detect the second temperature of the control circuit; Controlling the air temperature sensor to detect the third temperature of the air discharged from the drum; and A method for controlling a clothes treatment device, comprising: controlling the water supply device based on the first temperature of the compressor, the second temperature of the control circuit, or the third temperature of the air, thereby spraying water through the nozzle device into the heat exchanger.

11. In paragraph 10, Spraying water into the above heat exchanger is done by: A method for controlling a garment treatment device, wherein the method is performed for a predetermined injection time based on the first temperature of the compressor being equal to or higher than a first threshold temperature, the second temperature of the control circuit being equal to or higher than a second threshold temperature, or the third temperature of the air discharged from the drum being equal to or higher than a third threshold temperature.

12. In paragraph 11, Determining an average temperature of the first temperature of the compressor for a predetermined reference time from the start of the drying process; and Further comprising: controlling the water supply device based on the average temperature of the first temperature being equal to or higher than the reference temperature, thereby spraying water into the heat exchanger; A method for controlling a clothing treatment device, wherein the reference temperature with respect to the average temperature is lower than the first critical temperature with respect to the first temperature of the compressor.

13. In paragraph 12, Determining the average temperature with respect to the first temperature A method for controlling a clothing treatment device, wherein the method is performed based on the elapsed time from the end point of a previous drying process to the start point of the drying process being shorter than a predetermined threshold time.

14. In paragraph 10, The above compressor temperature sensor Including a discharge temperature sensor for detecting the discharge temperature of the compressor or a case temperature sensor for detecting the case temperature of the compressor, The first temperature of the above compressor is A method for controlling a clothes treatment device corresponding to the discharge temperature of the compressor or the case temperature of the compressor.

15. In paragraph 10, Spraying water into the above heat exchanger A method of controlling a clothing treatment device, wherein the process is performed a predetermined number of times once at predetermined time intervals.

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