Washing machine and control method thereof

Abstract

A washing machine according to one aspect of the disclosed invention comprises: a drum in which laundry is accommodated; a motor for rotating the drum; a memory; and at least one processor for determining a first weight of the laundry in a dry clothes state, determining a second weight of the laundry in a wet clothes state, and determining the final weight of the laundry on the basis of the first weight and the second weight, wherein the at least one processor can determine, on the basis of the first weight, a target moisture content of the laundry for determining the second weight.

Description

Washing machine and its control method

[0001] The disclosed invention relates to a washing machine capable of detecting the weight of laundry and a method for controlling the same.

[0002] Typically, a washing machine includes a tub and a drum that is installed rotatably within the tub, and can wash laundry by rotating the drum containing laundry within the tub.

[0003] These washing machines perform laundry through a series of operations, including a washing cycle that separates dirt from laundry using water containing detergent (specifically, wash water), a rinsing cycle that rinses away foam or residual detergent from laundry using water that does not contain detergent (specifically, rinse water), and a spin-drying cycle that removes moisture contained in the laundry through high-speed rotation. When washing through this series of operations, the washing cycle, rinsing cycle, and spin-drying cycle each drive the motor at a set target RPM and operating rate.

[0004] The motor RPM and operating speed for each cycle are set based on the weight (load) of the laundry, and the motor rotates at the speed specified by the set RPM and operating speed. Therefore, prior to this cycle, research is currently underway on methods for detecting the weight of the laundry to optimize the washing process.

[0005] One aspect of the disclosed invention provides a washing machine and a control method thereof that can provide optimal washing performance to a user by more accurately determining the weight of laundry loaded into a drum and performing washing in an appropriate manner by determining the final weight of laundry using the weight of laundry in a dry state and the weight of laundry in a wet state.

[0006] The technical problems to be achieved in this document are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0007] According to one aspect of the disclosed invention, a washing machine includes a drum for accommodating laundry; a motor for rotating the drum; a memory; and at least one processor for determining a first weight of the laundry in a dry state, a second weight of the laundry in a wet state, and a final weight of the laundry based on the first weight and the second weight; wherein the at least one processor can determine a target moisture content of the laundry for determining the second weight based on the first weight.

[0008] A control method of a washing machine according to one aspect of the disclosed invention comprises: a drum for accommodating laundry; a motor for rotating the drum; and a control method of a washing machine, the method comprising: determining a first weight of the laundry in a dry state; determining a second weight of the laundry in a wet state; and determining a final weight of the laundry based on the first weight and the second weight; wherein determining the second weight may include determining a target moisture content of the laundry for determining the second weight based on the first weight.

[0009] FIG. 1 is a drawing showing an example of the appearance of a washing machine according to one embodiment of the present disclosure.

[0010] Figure 2 illustrates a cross-section of the washing machine illustrated in Figure 1.

[0011] FIG. 3 is a drawing showing an example of the appearance of a washing machine according to one embodiment of the present disclosure.

[0012] Figure 4 shows a cross-section of the washing machine shown in Figure 3.

[0013] FIG. 5 is a drawing showing a control block diagram of a washing machine according to one embodiment of the present disclosure.

[0014] FIG. 6 is a flowchart illustrating a method for controlling a washing machine according to one embodiment of the present disclosure.

[0015] FIG. 7 is a flowchart illustrating determining weight in a wet state at a target function rate according to one embodiment of the present disclosure.

[0016] FIG. 8 is a diagram showing a target moisture content according to the weight of laundry in a dry state according to one embodiment of the present disclosure.

[0017] FIG. 9 is a flowchart illustrating determining weight in a wet state at a target rotation speed of a drum according to one embodiment of the present disclosure.

[0018] FIG. 10 is a diagram showing a target rotation speed according to the weight of laundry in a dry state according to one embodiment of the present disclosure.

[0019] FIG. 11 is a flowchart showing a process for calculating the moisture content of laundry according to one embodiment of the present disclosure.

[0020] FIG. 12 is a flowchart showing operations after determining the weight of laundry according to one embodiment of the present disclosure.

[0021] FIG. 13 is a diagram showing an interface displaying a change in washing settings based on determination of laundry weight according to one embodiment of the present disclosure.

[0022] 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.

[0023] In connection with the description of the drawings, similar reference numerals may be used for similar or related components.

[0024] 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.

[0025] 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.

[0026] The term “and / or” includes any combination of a plurality of related described elements or any one of a plurality of related described elements.

[0027] 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).

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] A washing machine may include a drum configured to accommodate laundry.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] At least one input interface can convert sensory information received from a user into an electrical signal.

[0050] At least one input interface may 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 may 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.

[0052] For example, at least one output interface may transmit information related to the washing cycle and operating time of the washing machine, as well as washing / rinsing / spin settings to the user. Information related to the operation of the washing machine may be output via a screen, indicator, voice, etc. At least one output interface may include, for example, a liquid crystal display (LCD) panel, a light emitting diode (LED) panel, a speaker, etc.

[0053] The washing machine may include a communication module for communicating with external devices via wires and / or wirelessly.

[0054] The communication module may include at least one of a short-range communication module or a long-range communication module.

[0055] 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.

[0056] 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).

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] Below, washing machines according to various embodiments are specifically described with reference to the attached drawings.

[0062] A washing machine (1) according to one embodiment may be a top loading washing machine (1a; see FIGS. 1 and 2) or a front loading washing machine (1b; see FIGS. 3 and 4).

[0063] Fig. 1 illustrates an example of the exterior appearance of a washing machine according to one embodiment. Fig. 2 illustrates a cross-section of the washing machine illustrated in Fig. 1.

[0064] Referring to FIGS. 1 and 2, a washing machine (1a) may include a housing (11a) that accommodates various components therein. The housing (11a) may form the exterior of the washing machine (1a). The housing (11a) may have a box shape with one portion open.

[0065] The housing (11a) may include a housing opening (12a) formed to allow access to the interior of the drum (30a). The housing opening (12a) may be opened approximately upwards.

[0066] The washing machine (1a) may include a door (13a) for opening and closing a housing opening (12a) provided in the housing (11a). The door (13a) may be rotatably mounted to the housing (11a) by a hinge. At least a portion of the door (13a) may be provided to be transparent or translucent so as to allow the interior of the housing (11a) to be visible.

[0067] The washing machine (1a) may include a tub (20a) provided inside the housing (11a) to store water. The tub (20a) may be arranged inside the housing (11a). The tub (20a) may include a tub opening (22a) provided to correspond to the housing opening (12a). The tub opening (22a) may be opened approximately upward. The tub (20a) may be supported inside the housing (11a). The tub (20a) may have an approximately cylindrical shape with one side open.

[0068] The tub (20a) can be elastically supported from the housing (11a) by a damper (80a). The damper (80a) can connect the housing (11a) and the tub (20a). The damper (80a) can be provided to absorb vibration energy between the tub (20a) and the housing (11a) to attenuate the vibration when the vibration generated when the drum (30a) rotates is transmitted to the tub (20a) and / or the housing (11a).

[0069] A washing machine (1a) may include a drum (30a) configured to accommodate laundry. The drum (30a) may be rotatably provided within a tub (20a). The drum (30a) may perform washing, rinsing, and / or dehydration while rotating within the tub (20a). The drum (30a) may include a hole (34a) connecting the internal space of the drum (30a) and the internal space of the tub (20a). The drum (30a) may have a generally cylindrical shape with one side open.

[0070] A balancing unit (36a) may be installed on the upper portion of the drum (30a) to resolve the load imbalance caused by laundry. The balancing unit (36a) includes a balancer housing having an annular channel, and a ball or a fluid mass provided movably within the channel, and the ball or fluid moves in accordance with the rotation of the drum (30a) to resolve the load imbalance of the drum (30a). The ball provided within the balancer housing may be defined as a ball balancer, and the fluid provided within the balancer housing may be defined as a fluid balancer.

[0071] The balancer housing can be mounted on a drum (30a), and at least one ball balancer or fluid balancer can be provided inside it.

[0072] A pulsator (37a) is rotatably installed at the bottom of the drum (30a) to generate a washing water stream. Laundry can be washed by the washing water stream generated by the pulsator (37a).

[0073] The drum (30a) may include a drum opening (32a) provided to correspond to the housing opening (12a) and the tub opening (22a). Laundry may be fed into the drum (30a) or taken out from the drum (30a) through the housing opening (12a), the tub opening (22a), and the drum opening (32a).

[0074] A washing machine (1a) may include a washing machine drive device (40a) configured to rotate a drum (30a) and a pulsator (37a). The washing machine drive device (40a) may include a motor (41a) and a shaft system for transmitting driving force generated by the motor (41a) to the drum (30a) and the pulsator (37a).

[0075] The motor (41a) may include a fixed stator (48a) and a rotor (49a) that rotates by electromagnetic interaction with the stator (48a).

[0076] The shaft system may include a dehydration shaft (47a) provided to transmit the driving force of the motor (41a) to the drum (30a), a washing shaft (46a) provided to transmit the driving force of the motor (41a) to the pulsator (37a), and a clutch device (45a) for connecting or disconnecting the motor (41a) and the dehydration shaft (47a).

[0077] The dehydration shaft (47a) is formed to have a hollow space, and the washing shaft (46a) can be provided in the hollow space of the dehydration shaft (47a). The washing shaft (46a) is maintained in a state connected to the rotor (49a) of the motor (41a), and the dehydration shaft (47a) can be connected to or disconnected from the rotor (49a) of the motor (41a) by a clutch device (45a).

[0078] When the clutch device (45a) disconnects the dehydration shaft (47a) and the motor (41a), power is transmitted only to the washing shaft (46a), so that only the pulsator (37a) rotates. When the clutch device (45a) connects the dehydration shaft (47a) and the motor (41a), power is transmitted to both the dehydration shaft (47a) and the washing shaft (46a), so that the drum (30a) and the pulsator (37a) can rotate simultaneously.

[0079] When only the pulsator (37a) rotates, a washing water flow is generated by the rotation of the pulsator (37a), and the laundry rotates by the generated washing water flow, causing friction with the drum (30a), so that the laundry can be washed. When the pulsator (37a) and the drum (30a) rotate simultaneously, the laundry inside the drum (30a) rotates, causing the moisture in the laundry to be removed by centrifugal force, so that the laundry can be dehydrated.

[0080] The washing machine (1a) may include a water supply device (50a). The water supply device (50a) may supply water to the tub (20a). The water supply device (50a) may be located above the tub (20a). The water supply device (50a) may include a water supply pipe and a water supply valve provided in 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 (60a) and / or the tub (20a). Water may be supplied to the tub (20a) via the detergent supply device (60a). Water may be supplied to the tub (20a) without passing through the detergent supply device (60a).

[0081] The water supply valve can open or close the water supply pipe in response to an electrical signal. The water supply valve can allow or block the supply of water from an external water source to the tub (20a). The water supply valve may include, for example, a solenoid valve that opens and closes in response to an electrical signal.

[0082] The washing machine (1a) may include a detergent supply device (60a) configured to supply detergent to the tub (20a). The detergent supply device (60a) may be configured to supply detergent into the tub (20a) during the water supply process. Water supplied through the water supply pipe may be mixed with detergent via the detergent supply device (60a). The water mixed with detergent may be supplied into the tub (20a). The detergent may include not only laundry detergent but also a rinse agent for a dryer, a deodorant, a sterilizer, or an air freshener.

[0083] The washing machine (1a) may include a drainage device (70a). The drainage device (70a) may be configured to discharge water stored in the tub (20a) to the outside. A drainage port (21a) may be formed at the bottom of the tub (20a) to drain water stored in the tub (20a) to the outside of the tub (20a). A drainage hose (74a) may be connected to the drainage port (21a), and a drainage valve (72a) for opening and closing the drainage hose (74a) may be provided on the drainage hose (74a).

[0084] The washing machine (1a) can provide a user interface (15a) for interaction between the user and the washing machine (1a).

[0085] The washing machine (1a) may include at least one user interface (15a). The user interface (15a) may include at least one input interface (16a) and at least one output interface (17a).

[0086] At least one input interface (16a) can convert sensory information received from a user into an electrical signal.

[0087] At least one input interface (16a) may 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 (16a) may 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.

[0088] At least one output interface (17a) can transmit various information related to the operation of the washing machine (1a) to the user by generating sensory information.

[0089] For example, at least one output interface (17a) can transmit information related to the washing course and the operating time of the washing machine (1a), washing settings / rinsing settings / spin settings to the user. Information related to the operation of the washing machine (1a) can be output through a screen, an indicator, voice, etc. At least one output interface (17a) can include, for example, a liquid crystal display (LCD) panel, a light emitting diode (LED) panel, a speaker, etc.

[0090] Fig. 3 illustrates an example of the exterior appearance of a washing machine according to one embodiment. Fig. 4 illustrates a cross-section of the washing machine illustrated in Fig. 3.

[0091] Referring to FIGS. 3 and 4, the washing machine (1b) may include a washing machine housing (11b) that accommodates various components therein. The washing machine housing (11b) may form the exterior of the washing machine (1b). The washing machine housing (11b) may have a box shape with one portion open.

[0092] The washing machine housing (11b) may include a housing opening (12b) formed to allow access to the interior of the drum (30b). The housing opening (12b) may open approximately forward.

[0093] The washing machine (1b) may include a door (13b) for opening and closing a housing opening (12b) provided in the washing machine housing (11b). The door (13b) may be rotatably mounted to the washing machine housing (11b) by a hinge (14b). At least a portion of the door (13b) may be provided to be transparent or translucent so as to allow the interior of the washing machine housing (11b) to be visible.

[0094] The washing machine (1b) may include a tub (20b) provided inside the washing machine housing (11b) to store water. The tub (20b) may be arranged inside the washing machine housing (11b). The tub (20b) may include a tub opening (22b) provided to correspond to the housing opening (12b). The tub opening (22b) may be opened approximately forward. The tub (20b) may be supported inside the washing machine housing (11b). The tub (20b) may have an approximately cylindrical shape with one side open.

[0095] The tub (20b) can be elastically supported from the washing machine housing (11b) by a damper (80b). The damper (80b) can connect the washing machine housing (11b) and the tub (20b). The damper (80b) can be provided to absorb vibration energy between the tub (20b) and the washing machine housing (11b) to attenuate the vibration when the vibration generated when the drum (30b) rotates is transmitted to the tub (20b) and / or the washing machine housing (11b).

[0096] A washing machine (1b) may include a drum (30b) configured to accommodate laundry. The drum (30b) may be rotatably provided within a tub (20b). The drum (30b) may perform washing, rinsing, and / or dehydration while rotating within the tub (20b). The drum (30b) may include a hole (34b) connecting the internal space of the drum (30b) and the internal space of the tub (20b). The drum (30b) may have a generally cylindrical shape with one side open. At least one lifter (35b) may be installed on the inner circumference of the drum (30b) so that laundry may be lifted and lowered when the drum (30b) rotates.

[0097] A balancing unit (36b) may be installed on one side (e.g., the front side) of the drum (30b) to resolve the load imbalance caused by laundry. The balancing unit (36b) includes a balancer housing having an annular channel, and a ball or a fluid mass provided movably inside the channel, and the ball or fluid moves according to the rotation of the drum (30b) to resolve the load imbalance of the drum (30b). The ball provided inside the balancer housing may be defined as a ball balancer, and the fluid provided inside the balancer housing may be defined as a fluid balancer.

[0098] The balancer housing can be mounted on a drum (30b), and at least one ball balancer or a fluid balancer can be provided inside it.

[0099] The drum (30b) may include a drum opening (32b) provided to correspond to the housing opening (12b) and the tub opening (22b). Laundry may be fed into the drum (30b) or taken out from the drum (30b) through the housing opening (12b), the tub opening (22b), and the drum opening (32b).

[0100] The washing machine (1b) may include a washing machine drive device (40b) configured to rotate a drum (30b). The washing machine drive device (40b) may include a motor (41b) and a rotation shaft (42b) for transmitting the driving force generated by the motor (41b) to the drum (30b). The rotation shaft (42b) may pass through the tub (20b) and be connected to the drum (30b).

[0101] The washing machine (1b) can be divided into a direct drive type in which a rotating shaft (42b) is directly connected to a motor (41b) to rotate a drum (30b), and an indirect drive type in which a pulley (43b) is connected between the motor (41b) and the rotating shaft (42b) to drive a drum (30b).

[0102] The washing machine (1b) according to one embodiment may be provided as an indirect drive type, but is not limited thereto and may also be provided as a direct drive type.

[0103] The rotary shaft (42b) may have one end connected to the drum (30b) and the other end connected to a pulley (43b) to transmit power from the motor (41b). A motor pulley (41ab) may be formed on the rotary shaft of the motor (41b). A drive belt (44b) may be provided between the motor pulley (41ab) and the pulley (43b), so that the rotary shaft (42b) may be driven by the drive belt (44b).

[0104] A bearing housing (45b) may be installed on a portion of the rear side of the tub (20b) to rotatably support a rotating shaft (42b). The bearing housing (45b) may be made of an aluminum alloy and may be inserted into a portion of the rear side of the tub (20b) when the tub (20b) is injection molded.

[0105] The washing machine driving device (40b) may be provided to rotate the drum (30b) forward or backward to perform washing, rinsing, and / or dehydration, or drying operations.

[0106] The washing machine (1b) may include a water supply device (50b). The water supply device (50b) may supply water to the tub (20b). The water supply device (50b) may be located above the tub (20b). The water supply device (50b) may include a water supply pipe (51b) and a water supply valve (56b) provided in the water supply pipe (51b). The water supply pipe (51b) may be connected to an external water source. The water supply pipe (51b) may extend from the external water source to a detergent supply device (60b) and / or the tub (20b). Water may be supplied to the tub (20b) via the detergent supply device (60b). Water may be supplied to the tub (20b) without passing through the detergent supply device (60b).

[0107] The water supply valve (56b) can open or close the water supply pipe (51b) in response to an electrical signal. The water supply valve (56b) can allow or block the supply of water from an external water source to the tub (20b). The water supply valve (56b) may include, for example, a solenoid valve that opens and closes in response to an electrical signal.

[0108] The washing machine (1b) may include a detergent supply device (60b) configured to supply detergent to the tub (20b). The detergent supply device (60b) may be configured to supply detergent into the tub (20b) during the water supply process. Water supplied through the water supply pipe (51b) may be mixed with detergent via the detergent supply device (60b). The water mixed with the detergent may be supplied into the tub (20b). The detergent may include not only laundry detergent but also a dryer rinse, a deodorant, a sterilizer, or an air freshener. The detergent supply device (60b) may be connected to the tub (20b) through a connection pipe (61b).

[0109] The washing machine (1b) may include a drainage device (70b). The drainage device (70b) may be configured to discharge water contained in the tub (20b) to the outside. The drainage device (70b) may include a drainage pump (73b) for discharging water in the tub (20b) to the outside of the washing machine housing (11b), a connection hose (71b) for connecting the tub (20b) and the drainage pump (73b) so that water inside the tub (20b) can flow into the drainage pump (73b), and a drainage hose (74b) for guiding water pumped by the drainage pump (73b) to the outside of the washing machine housing (11b). The drainage device (70b) may include a drainage valve (72b) provided in the connection hose (71b) for opening and closing the connection hose (71b).

[0110] The washing machine (1b) can provide a user interface (15b) for interaction between the user and the washing machine (1b).

[0111] The washing machine (1b) may include at least one user interface (15b). The user interface (15b) may include at least one input interface (16b) and at least one output interface (17b).

[0112] At least one input interface (16b) can convert sensory information received from a user into an electrical signal.

[0113] At least one input interface (16b) may 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 (16b) may 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.

[0114] At least one output interface (17b) can transmit various information related to the operation of the washing machine (1b) to the user by generating sensory information.

[0115] For example, at least one output interface (17b) can transmit information related to a washing course and the operating time of the washing machine (1b), washing settings / rinsing settings / spin settings to the user. Information related to the operation of the washing machine (1b) can be output through a screen, an indicator, voice, etc. At least one output interface (17b) can include, for example, a liquid crystal display (LCD) panel, a light emitting diode (LED) panel, a light emitting diode (LED) module, a speaker, etc.

[0116] FIG. 5 is a drawing showing a control block diagram of a washing machine according to one embodiment of the present disclosure.

[0117] In one embodiment, the washing machine (1) may include a user interface (15; 15a, 15b), a driving device (40; 40a, 40b), a water supply device (50; 50a, 50b), a rotation speed sensor (93), a flow sensor (94), a water level sensor (95) and / or a control unit (90). The control unit may include at least one processor (91) and a memory (92).

[0118] The user interface (15) can provide a user interface for interaction between a user and a washing machine (1).

[0119] The user interface (15) may include at least one input interface (16; 16a, 16b) and at least one output interface (17; 17a, 17b).

[0120] At least one input interface (16) can convert sensory information received from a user into an electrical signal.

[0121] At least one input interface (16) may 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 (16) may 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.

[0122] At least one output interface (17) can transmit various information related to the operation of the washing machine (1) to the user by generating sensory information.

[0123] For example, at least one output interface (17) can transmit information related to the washing course and the operating time of the washing machine (1), washing settings / rinsing settings / spin settings to the user. Information related to the operation of the washing machine (1) can be output through a screen, an indicator, voice, etc. At least one output interface (17) can include, for example, a liquid crystal display (LCD) panel, a light emitting diode (LED) panel, a speaker, etc.

[0124] The driving device (40; 40a, 40b) may include a motor (41; 41a, 41b) that provides driving force to rotate the drum (30; 30a, 30b), and a driving circuit (200) that drives the motor (41). The motor (41) may operate based on a driving current supplied from the driving circuit (200). The driving device (40) may operate based on a control signal of the control unit (90).

[0125] The water supply device (50; 50a, 50b) may include a water supply valve (56a, 56b) that opens and closes a water supply pipe (51a, 51b) extending from an external water source to the detergent supply device (60a, 60b) and / or the tub (20; 20a, 20b). The water supply valve (56a, 56b) may be opened and closed based on a control signal from the control unit (90).

[0126] The washing machine (1) may include at least one sensor that obtains information related to the operating status of the washing machine (1).

[0127] As described above, the washing machine may include a rotation speed sensor (93) that detects the rotation speed of the motor (41), a flow rate sensor (94) that measures the amount of water supplied to the drum (30), and a water level sensor (95) that detects the water level contained inside the drum.

[0128] These rotation speed sensors (93), flow sensors (94) and water level sensors (95) can transmit sensor data to the control unit (90).

[0129] The control unit (90) may include a memory (92) that stores a control program and control data for controlling a user interface (15), a driving device (40), and a water supply device (50), and at least one processor (91) that generates a control signal according to the control program and control data stored in the memory (92). The memory (92) and the processor (91) may be provided integrally or separately.

[0130] The memory (92) can store the flow rate / level correlation and the water level / water quantity correlation to be described later, and can store programs and data for controlling the user interface (15), driving device (40), and water supply device (50).

[0131] The memory (92) may include volatile memory such as Static Random Access Memory (S-RAM) and Dynamic Random Access Memory (D-RAP) for temporarily storing data. In addition, the memory (92) may include nonvolatile memory such as Read Only Memory (ROM), Erasable Programmable Read Only Memory (EPROM), and Electrically Erasable Programmable Read Only Memory (EEPROM) for long-term storage of data.

[0132] In one embodiment, the memory (92) may store an artificial intelligence model. As will be described later, the artificial intelligence model may be learned to determine the final weight of laundry by using at least one factor obtained by processing sensor data collected from various sensors of the washing machine (1) (e.g., rotation speed sensor (93), flow rate sensor (94), and / or water level sensor (95)) as input data.

[0133] Depending on the various embodiments, the artificial intelligence model may be stored on the server or only on the server.

[0134] The processor (91) may include various logic circuits and operation circuits, process data according to a program provided from memory (92), and generate a control signal according to the processing result.

[0135] When a method according to at least one embodiment of the present disclosure includes multiple operations, the multiple operations may be performed by one processor or by multiple processors. For example, when a first operation, a second operation, and a third operation are performed by a method according to at least one embodiment, the first operation, the second operation, and the third operation may all be performed by the first processor, or the first operation and the second operation may be performed by the first processor (e.g., a general-purpose processor) and the third operation may be performed by the second processor (e.g., an artificial intelligence-dedicated processor).

[0136] The control unit (90) may be mounted on a printed circuit board provided on the rear of the user interface (15), for example.

[0137] The control unit (90) can be electrically connected to the user interface (15), the driving device (40), the water supply device (50), the rotation speed sensor (93), the flow rate sensor (94) and / or the water level sensor (95).

[0138] FIG. 6 is a flowchart illustrating a method for controlling a washing machine according to one embodiment of the present disclosure.

[0139] According to one embodiment, the washing machine (1) can start a washing cycle based on receiving a washing cycle start command through the user interface (15).

[0140] The processor (91) can perform a weight detection process based on the start of the washing process (601).

[0141] The processor (91) can determine the weight (first weight) of the laundry in a dry state (603).

[0142] The processor (91) can then determine the weight (second weight) of the laundry in a wet state (605).

[0143] Thereafter, the processor (91) can determine the final weight of the laundry by inputting the determined first weight and second weight into the artificial intelligence model (607).

[0144] Here, the artificial intelligence model may be trained to use the first weight and the second weight of the laundry as input data to output data on the final weight of the laundry.

[0145] In one embodiment, the artificial intelligence model may be stored in memory (92) and / or an external device (e.g., a server).

[0146] When the artificial intelligence model is stored in the memory (92), the processor (91) can determine the final weight of the laundry by inputting the first weight and the second weight of the laundry into the artificial intelligence model stored in the memory (92).

[0147] When the artificial intelligence model is stored only in the external device, the processor (91) transmits information about the first weight and the second weight of the laundry to the external device through a communication interface, and the external device obtains information about the final weight of the laundry by inputting the first weight and the second weight of the laundry received from the washing machine (1) into the artificial intelligence model, and the external device transmits information about the final weight of the laundry to the washing machine (1), and as a result, the processor (91) can determine the final weight of the laundry.

[0148] That is, the operation (607) of determining the final weight of the laundry by inputting the first weight and the second weight of the laundry into the artificial intelligence model by the processor (91) may include the operation of determining the final weight of the laundry by inputting the first weight and the second weight of the laundry into the artificial intelligence model stored in the memory (92) by the processor (91) and / or the operation of determining the final weight of the laundry by transmitting information on the first weight and the second weight of the laundry to an external device in which the artificial intelligence model is stored through a communication interface and receiving information on the final weight of the laundry from the external device.

[0149] This artificial intelligence model can be trained based on first data related to a first weight and a second weight determined by the processor (91), second data related to a final weight of laundry determined by the artificial intelligence model based on the first weight and the second weight, and third data related to a target moisture content of laundry for determining the second weight to be described later.

[0150] FIG. 7 is a flowchart illustrating determining a weight in a wet state at a target moisture content according to one embodiment of the present disclosure, and FIG. 8 is a diagram showing a target moisture content according to a weight in a dry state of laundry according to one embodiment of the present disclosure.

[0151] The processor (91) can perform a weight detection process based on the start of the washing process (701).

[0152] The processor (91) can determine the weight (first weight) of the laundry in a dry state (703).

[0153] Once the first weight is determined, the processor (91) can determine the target moisture content of the laundry to determine the weight of the laundry in a wet state (second weight) based on the first weight.

[0154] Moisture content is a factor representing the amount of water contained per weight of laundry, and can be expressed as "Moisture content of laundry = Moisture content of laundry / Weight of laundry." The target moisture content includes the optimal moisture content for accurately determining the weight of laundry in a wet state, and can be set to an appropriate value for determining the second weight. The detailed process for calculating the moisture content of laundry is described with reference to Fig. 11.

[0155] The target function ratio for determining the second weight may vary depending on the first weight as shown in Fig. 8.

[0156] For example, if the weight of the laundry in a dry state (first weight) is 1 to 4 [kg], the optimal moisture content for determining the weight of the laundry in a wet state (second weight) may be 25%. Accordingly, the processor (91) may determine the target moisture content as 25% in this case.

[0157] In addition, when the weight of the laundry in a dry state (first weight) is 9 to 12 [kg], the optimal moisture content for determining the weight of the laundry in a wet state (second weight) may be 50%. Accordingly, the processor (91) may determine the target moisture content as 50% in this case.

[0158] The functional ratio values ​​shown in Fig. 8 are merely examples and can be set to appropriate values ​​for determining the second weight. The AI ​​model then learns data related to the target functional ratio for determining the second weight and data related to the final weight of the laundry, and based on the learning results, sets a new target functional ratio for determining the second weight.

[0159] By determining the optimal moisture content based on the dry weight of the laundry and updating it, a more accurate laundry weight can be determined.

[0160] Once the target moisture content is determined, the processor (91) can control the water supply device (50) to supply water to the drum until the moisture content of the laundry reaches the target moisture content (707). In this case, the water supply valve (56b) can be controlled to open so that water is supplied to the drum.

[0161] When the moisture content of the laundry reaches the target moisture content (example of 709), the processor (91) can stop supplying water and determine the weight of the laundry in a wet state (second weight) (711).

[0162] Below, the operation of determining the weight of laundry in a dry state (first weight) and the weight of laundry in a wet state (second weight) is described.

[0163] FIG. 9 is a flowchart illustrating determining a weight in a wet state at a target rotation speed of a drum according to one embodiment of the present disclosure, and FIG. 10 is a diagram showing a target rotation speed according to a weight of laundry in a dry state according to one embodiment of the present disclosure.

[0164] The processor (91) can perform a weight detection process based on the start of the washing process (901).

[0165] The processor (91) can determine the weight (first weight) of the laundry in a dry state (903).

[0166] The processor (91) can determine the moment of inertia value of the laundry in a dry state based on the rotation speed of the motor (41) detected by the rotation speed sensor in the dry state and the torque of the drum (30).

[0167] The torque of this drum (30) may be the torque generated in the drum (30) by the rotation of the motor (41).

[0168] The processor (91) can determine the weight (first weight) of the laundry in a dry state based on this moment of inertia value.

[0169] As described above, the processor (91) can determine a target function ratio for determining the weight (second weight) of the laundry in a wet state based on the determined first weight (905).

[0170] Additionally, the processor (91) can determine the target rotation speed of the motor (41) for determining the second weight based on the determined first weight or the determined target function rate.

[0171] The target rotation speed includes the optimal motor (41) rotation speed for accurately determining the weight of the laundry in a wet state, and can be set to an appropriate value for determining the second weight.

[0172] The target rotation speed for determining the second weight may vary depending on the first weight (or target function ratio) as illustrated in FIG. 10.

[0173] For example, if the weight of the laundry in a dry state (first weight) is 1 to 4 [kg], the optimal motor rotation speed for determining the weight of the laundry in a wet state (second weight) may be 110 [RPM]. Accordingly, the processor (91) may determine the target rotation speed as 110 [RPM] in this case.

[0174] In addition, when the weight of the laundry in a dry state (first weight) is 9 to 12 [kg], the optimal motor rotation speed for determining the weight of the laundry in a wet state (second weight) may be 130 [RPM]. Accordingly, the processor (91) may determine the target rotation speed as 130 [RPM] in this case.

[0175] The rotation speed shown in Fig. 10 is only an example and can be set to an appropriate value for determining the second weight.

[0176] Thereafter, the processor (91) controls the motor (41) to rotate the drum (30) based on the determined target rotation speed, determines the moment of inertia value in the wet state of the laundry based on the rotation speed of the motor (target rotation speed) and the torque of the drum (30), and determines the weight (second weight) in the wet state of the laundry based on the moment of inertia value.

[0177] In determining the weight of the laundry in a wet state, the target rotation speed of the motor (41) is determined based on the weight of the laundry in a dry state, and by rotating the motor based on this, the weight of the laundry can be determined more accurately.

[0178] Below, the process of calculating the moisture content of laundry to determine the final weight of such laundry is described.

[0179] FIG. 11 is a flowchart showing a process for calculating the moisture content of laundry according to one embodiment of the present disclosure.

[0180] As described above, the washing machine (1) may include a flow sensor (94) that measures the amount of water supplied to the drum (30) and a water level sensor (95) that detects the water level contained inside the drum (30).

[0181] The processor (91) can calculate the moisture content of the laundry based on the detection results of the flow sensor (94) and the water level sensor (95).

[0182] Specifically, the processor (91) can determine the amount of water (first amount of water) contained in the drum (30) based on the detection result of the flow sensor (94) (1101).

[0183] That is, the amount of water contained in the drum (30) can be predicted based on the flow rate detected by the flow rate sensor (94).

[0184] The processor (91) can use a flow rate / water level correlation and / or a water level / water quantity correlation to calculate the amount of water from the detected flow rate.

[0185] These flow rate / level correlations and / or water level / water quantity correlations may be stored in the memory (92). The processor (91) can obtain a water level value corresponding to the flow rate using these correlations, and obtain an amount of water (first water quantity) corresponding to the obtained water level value.

[0186] That is, the amount of first water may be a predicted value of the total amount of water supplied to the drum (30).

[0187] The processor (91) can determine the amount of water (second amount of water) inside the drum (30) based on the detection result of the water level sensor (95) (1103).

[0188] That is, based on the correlation equation described above, the amount of water (second amount of water) corresponding to the water level value detected by the water level sensor (95) can be obtained.

[0189] This amount of second water may be the amount of current water contained in the drum (30).

[0190] The processor (91) can calculate the difference between the amount of the first water and the amount of the second water (1105).

[0191] That is, by calculating the difference between the total amount of water predicted to have been supplied to the drum (30) (first amount of water) and the amount of water currently contained in the drum (30) (second amount of water), the amount of water contained in the laundry can be determined.

[0192] That is, 'the moisture content of the laundry = the amount of the first water - the amount of the second water'.

[0193] The processor (91) can calculate the moisture content of the laundry based on this difference value (1107).

[0194] As mentioned above, the moisture content can be expressed as moisture content / weight, and the moisture content of the laundry can be calculated by dividing the weight of the laundry by the determined moisture content.

[0195] In this way, the washing machine (1) of the present invention can calculate the moisture content of laundry using only the water level sensor (95) and the flow rate sensor (94) without a separate sensor.

[0196] When the function rate calculated in this way reaches the target function rate, the processor can perform the operation (711) described above.

[0197] FIG. 12 is a flowchart showing an operation after determining the weight of laundry according to one embodiment of the present disclosure, and FIG. 13 is a diagram showing displaying a change in washing settings according to determining the weight of laundry according to one embodiment of the present disclosure on an interface.

[0198] When the final weight of the laundry is determined according to the final weight determination operation described above (1201), the processor (91) can change the washing settings of the washing machine (1) based on the determined final weight of the laundry (1103).

[0199] Washing settings may include the rotation speed of the drum (30), the operation time of the washing cycle, etc. The processor (91) may control the driving device (40) to vary the rotation speed and / or operation time of the drum (30) depending on the determined final weight of the laundry.

[0200] The processor (91) can control the user interface (15) to provide an interface for changing these washing settings (1105).

[0201] As described above, information provided through the user interface (15) may include auditory information such as voice and / or visual information such as display.

[0202] For example, as shown in FIG. 13, a phrase such as "Change washing time according to final weight of laundry" can be displayed to inform the user that the laundry information changes according to the determined final weight.

[0203] A washing machine according to one embodiment may include a drum for accommodating laundry; a motor for rotating the drum; a memory; and at least one processor for determining a first weight of the laundry in a dry state, determining a second weight of the laundry in a wet state, and inputting the first weight and the second weight into an artificial intelligence model to determine a final weight of the laundry.

[0204] According to the present disclosure, the final weight of the laundry is determined by using the weight of the laundry in a dry state and the weight of the laundry in a wet state, thereby more accurately determining the weight of the laundry loaded into the drum and performing washing in an appropriate manner, thereby providing the user with optimal washing performance.

[0205] The at least one processor may determine a target moisture content of the laundry for determining the second weight based on the first weight.

[0206] Further comprising a water supply device for supplying water to the drum; wherein the at least one processor can control the water supply device to supply water to the drum until the target moisture content of the laundry is reached.

[0207] A flow sensor for detecting the amount of water flowing into the drum; a water level sensor for detecting the level of water inside the drum; and the at least one processor can calculate the moisture content of the laundry based on the detection results of the flow sensor and the water level sensor.

[0208] The at least one processor can determine a first amount of water inside the drum based on a detection result of the flow rate sensor, determine a second amount of water inside the drum based on a detection result of the water level sensor, and calculate a moisture content of the laundry based on a difference value between the first amount of water and the second amount of water.

[0209] The at least one processor can determine the amount of first water inside the drum based on the detection result of the flow sensor according to the flow rate / water level correlation stored in the memory.

[0210] The at least one processor may determine the second weight when the target moisture content of the laundry is reached.

[0211] The at least one processor may change the washing settings of the washing machine based on the determined final weight of the laundry.

[0212] A user interface; further comprising at least one processor capable of controlling the user interface to provide an interface for changing washing settings of the washing machine.

[0213] The artificial intelligence model may be trained based on first data related to the first weight and the second weight determined by the at least one processor, second data related to the final weight of the laundry determined by the artificial intelligence model based on the first weight and the second weight, and third data related to the target moisture content of the laundry for determining the second weight.

[0214] A rotation speed sensor for detecting the rotation speed of the motor is further included, and the at least one processor can determine an inertia moment value of the laundry based on the rotation speed detected by the rotation speed sensor and the torque of the drum, and determine the first weight and the second weight based on the detected rotation speed, the torque, and the inertia moment.

[0215] The at least one processor may determine a target rotational speed of the motor for determining the second weight based on the determined target moisture content of the laundry.

[0216] A method for controlling a washing machine according to one embodiment includes a drum for accommodating laundry; a motor for rotating the drum; and the method may include determining a first weight of the laundry in a dry state; determining a second weight of the laundry in a wet state; and inputting the first weight and the second weight into an artificial intelligence model to determine a final weight of the laundry.

[0217] Determining the second weight may include determining a target moisture content of the laundry for determining the second weight based on the first weight.

[0218] Further comprising a water supply device for supplying water to the drum; and determining the second weight may include controlling the water supply device to supply water to the drum until a target moisture content of the laundry is reached.

[0219] The drum may further include a flow sensor for detecting the amount of water flowing into the drum; a water level sensor for detecting the level of water inside the drum; and determining the second weight may include calculating the moisture content of the laundry based on detection results of the flow sensor and the water level sensor.

[0220] Calculating the moisture content of the laundry may include determining a first amount of water inside the drum based on a detection result of the flow sensor, determining a second amount of water inside the drum based on a detection result of the water level sensor, and calculating the moisture content of the laundry based on a difference value between the first amount of water and the second amount of water.

[0221] Determining the amount of the first water may include determining the amount of the first water inside the drum based on a detection result of the flow rate sensor according to a flow rate / water level correlation equation stored in the memory.

[0222] Determining the second weight may include determining the second weight when the target moisture content of the laundry is reached.

[0223] It may further include changing the washing settings of the washing machine based on the final weight of the laundry determined above.

[0224] The washing machine may further include a user interface; and controlling the user interface to provide an interface for changing washing settings of the washing machine.

[0225] The artificial intelligence model may be trained based on first data related to the first weight and the second weight determined by the at least one processor, second data related to the final weight of the laundry determined by the artificial intelligence model based on the first weight and the second weight, and third data related to the target moisture content of the laundry for determining the second weight.

[0226] The method may further include a rotation speed sensor that detects the rotation speed of the motor, and determining the first weight and the second weight may include determining an inertia moment value of the laundry based on the rotation speed detected by the rotation speed sensor and the torque of the drum, and determining the first weight and the second weight based on the detected rotation speed, the torque, and the moment of inertia.

[0227] Determining the second weight may include determining a target rotational speed of the motor for determining the second weight based on the determined target moisture content of the laundry.

[0228] According to one aspect of the disclosed invention, by determining the final weight of the laundry using the weight of the laundry in a dry state and the weight of the laundry in a wet state, the weight of the laundry loaded into the drum is more accurately determined, and washing is performed in an appropriate manner, thereby providing the user with optimal washing performance.

[0229] Meanwhile, the disclosed embodiments may be implemented in the form of a recording medium storing computer-executable instructions. The instructions may be stored in the form of program code, and when executed by a processor, may generate program modules to perform the operations of the disclosed embodiments. The recording medium may be implemented as a computer-readable recording medium.

[0230] Computer-readable storage media include all types of storage media that store instructions that can be deciphered by a computer. Examples include read-only memory (ROM), random access memory (RAM), magnetic tape, magnetic disks, flash memory, and optical data storage devices.

[0231] 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. A drum that holds laundry; A motor that rotates the drum; memory; and At least one processor for determining a first weight of the laundry in a dry state, determining a second weight of the laundry in a wet state, and determining a final weight of the laundry based on the first weight and the second weight; At least one processor, A washing machine that determines the target moisture content of the laundry based on the first weight to determine the second weight.

2. In paragraph 1, At least one processor, A washing machine that determines the final weight of the laundry by inputting the first weight and the second weight into an artificial intelligence model.

3. In paragraph 1, Further comprising a water supply device for supplying water to the drum; At least one processor, A washing machine that controls the water supply device to supply water to the drum until the target moisture content of the laundry is reached.

4. In paragraph 3, A flow sensor that detects the amount of water flowing into the drum; Further comprising a water level sensor for detecting the water level inside the drum; At least one processor, A washing machine that calculates the moisture content of the laundry based on the detection results of the flow rate sensor and the water level sensor.

5. In paragraph 4, At least one processor, A washing machine that determines a first amount of water inside the drum based on a detection result of the flow sensor, determines a second amount of water inside the drum based on a detection result of the water level sensor, and calculates the moisture content of the laundry based on a difference value between the first amount of water and the second amount of water.

6. In paragraph 5, At least one processor, A washing machine that determines the first amount of water inside the drum based on the detection result of the flow rate sensor according to the flow rate / water level correlation stored in the memory.

7. In paragraph 1, At least one processor, A washing machine that determines the second weight when the target moisture content of the laundry is reached.

8. In paragraph 1, At least one processor, A washing machine that changes the washing settings of the washing machine based on the final weight of the laundry determined above.

9. In paragraph 8, including a user interface; At least one processor, A washing machine controlling the user interface to provide an interface for changing the washing settings of the washing machine.

10. In paragraph 2, The above artificial intelligence model is, A washing machine that learns based on first data related to the first weight and the second weight determined by the at least one processor, second data related to the final weight of the laundry determined by the artificial intelligence model based on the first weight and the second weight, and third data related to the target moisture content of the laundry for determining the second weight.

11. In paragraph 1, Further comprising a rotation speed sensor for detecting the rotation speed of the above motor; At least one processor, Determine the inertia moment value of the laundry based on the rotation speed detected by the rotation speed sensor and the torque of the drum, A washing machine that determines the first weight and the second weight based on the detected rotation speed, the torque, and the moment of inertia.

12. In paragraph 11, At least one processor, A washing machine that determines the target rotation speed of the motor for determining the second weight based on the target moisture content of the laundry determined above.

13. A method for controlling a washing machine, comprising: a drum for receiving laundry; a motor for rotating the drum; Determine the first weight of the above laundry in a dry state; Determine the second weight of the above laundry in a wet state; determining the final weight of the laundry based on the first weight and the second weight; Determining the above second weight is: A control method for a washing machine, comprising determining a target moisture content of the laundry based on the first weight to determine the second weight.

14. In paragraph 13, Determining the final weight above is: A method for controlling a washing machine, comprising: determining the final weight of the laundry by inputting the first weight and the second weight into an artificial intelligence model.

15. In paragraph 13, Further comprising a water supply device for supplying water to the drum; Determining the above second weight is: A control method for a washing machine, comprising controlling the water supply device to supply water to the drum until the target moisture content of the laundry is reached.

Images