Refrigerator including water tank

Abstract

A refrigerator may be disclosed, the refrigerator comprising: a main body; a door rotatably or slidably installed on the front surface of the main body; at least one storage chamber in which articles are stored; a water tank provided in the at least one storage chamber and storing water to be supplied to at least one water supply system; a water detection sensor which detects the water stored in the water tank; and at least one processor which controls a first pump to, when the water stored in the water tank is detected for a predetermined time or more through the water detection sensor, discharge the water stored in the water tank to an evaporation tray below a condenser in a machine room by using a discharge passage of defrost water.

Description

Refrigerator with water tank

[0001] The present disclosure relates to a refrigerator including a water tank.

[0002] A refrigerator is a device used to store food or medicine at low temperatures to prevent spoilage or to maintain an appropriate operating temperature. Typically, refrigerators utilize a refrigeration cycle consisting of a compressor, condenser, expansion valve, and evaporator to cool and store food.

[0003] Recently, refrigerators are increasingly being equipped with ice-making devices that automatically create ice inside the refrigerator. While users previously had to manually supply water to the ice-making device, recently developed refrigerators can automatically supply water to the device. Refrigerators with water-injection functions can be broadly categorized into plumbing and non-trough types. Plumbing types receive water from an external water pipe, while bucket-type refrigerators incorporate an internal water tank, requiring the user to manually supply water to the tank.

[0004] In structures where it's difficult to connect external water pipes to the refrigerator, a bucket-type is more suitable than a direct-flow type. Furthermore, compared to a direct-flow type, a bucket-type offers the advantage of a simpler structure and greater mobility (e.g., when moving, relocating the refrigerator).

[0005] According to one embodiment of the present disclosure, a refrigerator may include: a main body; a door installed on the front of the main body so as to be rotatable or slidable; at least one storage compartment in which items are stored; a water tank provided in the at least one storage compartment and storing water for supplying at least one water supply system; a water detection sensor that detects water stored in the water tank; and at least one processor that controls a first pump to discharge water stored in the water tank to an evaporation tray located below a condenser in a machine room using a defrost water discharge passage when water stored in the water tank for a predetermined period of time or longer is detected by the water detection sensor.

[0006] According to one embodiment of the present disclosure, a refrigerator may include: a main body; a door installed on the front of the main body so as to be rotatable or slidable; at least one storage compartment in which items are stored; a water tank provided in the at least one storage compartment and storing water for supplying at least one water supply system; a water detection sensor for detecting water stored in the water tank; and at least one processor for outputting a notification to empty the water tank through at least one of a user device connected to a server device, a display of the refrigerator, or a speaker when water stored in the water tank for a predetermined period of time or longer is detected through the water detection sensor and a user's motion using the refrigerator is detected.

[0007] FIG. 1 is a drawing for explaining a water supply system of a refrigerator according to one embodiment of the present disclosure.

[0008] FIG. 2 is a drawing for explaining a water tank and a water detection sensor according to one embodiment of the present disclosure.

[0009] FIG. 3 is a drawing for explaining the shape of the lower part of a water tank according to one embodiment of the present disclosure.

[0010] FIG. 4 is a drawing for explaining the location of a water detection sensor according to one embodiment of the present disclosure.

[0011] FIG. 5 is a drawing for explaining a water detection sensor according to one embodiment of the present disclosure.

[0012] FIG. 6 is a drawing for explaining a system for discharging water from a water tank according to one embodiment of the present disclosure.

[0013] FIG. 7 is a drawing for explaining a system for discharging water from a water tank to an evaporation tray according to one embodiment of the present disclosure.

[0014] FIG. 8 is a flowchart illustrating a method for determining a discharge timing or discharge amount of water stored in a water tank according to one embodiment of the present disclosure.

[0015] FIG. 9 is a drawing for explaining the amount of defrosting and the defrosting operation cycle according to one embodiment of the present disclosure.

[0016] FIG. 10 is a flowchart illustrating a method for discharging water from a water tank according to one embodiment of the present disclosure.

[0017] FIG. 11 is a drawing for explaining an operation of supplying water from a water tank to an ice making device according to one embodiment of the present disclosure.

[0018] FIG. 12 is a drawing for explaining an operation of supplying water to a water tank using an auto fill device according to one embodiment of the present disclosure.

[0019] FIG. 13 is a flowchart illustrating a method of outputting a notification to empty a water tank or a notification to start discharging residual water according to one embodiment of the present disclosure.

[0020] FIG. 14 is a drawing for explaining an operation of outputting a notification to empty a water tank through a display of a refrigerator according to one embodiment of the present disclosure.

[0021] FIG. 15 is a diagram for explaining an operation of outputting a notification to empty a water tank through a user terminal connected to a server device according to one embodiment of the present disclosure.

[0022] FIG. 16 is a drawing for explaining an operation of outputting a notification indicating that discharge of residual water has begun according to one embodiment of the present disclosure.

[0023] FIG. 17 is a flowchart illustrating a method for disabling the operation of a pump for supplying water to a water supply system according to one embodiment of the present disclosure.

[0024] FIG. 18 is a drawing for explaining an operation of outputting a notification to replenish water in a water tank according to one embodiment of the present disclosure.

[0025] FIG. 19 is a flowchart for explaining a method for outputting a notification when the temperature inside a refrigerator is higher than a reference temperature according to one embodiment of the present disclosure.

[0026] FIG. 20 is a drawing for explaining an operation of outputting a notification to check the temperature inside a refrigerator or a notification to check the status of a water tank according to one embodiment of the present disclosure.

[0027] The terms used in this disclosure will be briefly explained, and one embodiment of the present disclosure will be specifically described.

[0028] The terms used in this disclosure are selected from widely used, current terms, taking into account the functions of one embodiment of the disclosure. However, these terms may vary depending on the intentions of those skilled in the art, precedents, the emergence of new technologies, etc. Furthermore, in certain cases, terms may be arbitrarily selected by the applicant, and in such cases, their meanings will be described in detail in the description of the relevant embodiments of the disclosure. Therefore, the terms used in this disclosure should not be defined simply as names of terms, but rather based on the meanings of the terms and the overall content of the disclosure.

[0029] In this disclosure, the expression “at least one of a, b or c” may refer to “a”, “b”, “c”, “a and b”, “a and c”, “b and c”, “all of a, b and c”, or variations thereof.

[0030] Throughout this disclosure, when a part is said to "include" a certain component, this does not mean that other components are excluded, but rather that other components may be included, unless otherwise specifically stated. Furthermore, terms such as "part" and "module" described in this disclosure mean a unit that processes at least one function or operation, and the "part" and "module" may be implemented as hardware or software, or as a combination of hardware and software.

[0031] Below, with reference to the attached drawings, embodiments of the present disclosure are described in detail so that those skilled in the art can easily implement the present disclosure. However, one embodiment of the present disclosure may be implemented in various different forms and is not limited to the embodiments described herein. In addition, in the drawings, parts irrelevant to the description are omitted to clearly describe one embodiment of the present disclosure, and similar parts are designated with similar drawing reference numerals throughout the present disclosure.

[0032] A refrigerator according to one embodiment may include a body.

[0033] The "body" may include an inner case, an outer case disposed on the outside of the inner case, and an insulating material provided between the inner case and the outer case.

[0034] The "inner case" may include at least one of a case, a plate, a panel, or a liner forming a storage compartment. The inner case may be formed as a single body, or may be formed by assembling a plurality of plates. The "outer case" may form the outer appearance of the main body, and may be joined to the outer side of the inner case so that insulation is placed between the inner case and the outer case.

[0035] "Insulation" can insulate the interior and exterior of a storage room so that the temperature inside the storage room can be maintained at a set temperature without being affected by the external environment. In one embodiment, the insulation can include foam insulation. The foam insulation can be formed by injecting and foaming urethane foam, a mixture of polyurethane and a foaming agent, between the inner and outer layers.

[0036] In one embodiment, the insulation may include a vacuum insulation material in addition to the foam insulation, or the insulation may consist solely of the vacuum insulation material instead of the foam insulation. The vacuum insulation material may include a core material and an outer shell material that accommodates the core material and seals the interior under a vacuum or near-vacuum pressure. However, the insulation material is not limited to the foam insulation or vacuum insulation material described above, and may include various materials that can be used for insulation.

[0037] A "storage room" may include a space defined by an interior wall. The storage room may further include an interior wall defining a corresponding space. The storage room may store various items, such as food, medicine, and cosmetics, and the storage room may be configured to be open on at least one side for the entry and exit of items.

[0038] A refrigerator may include one or more storage compartments. When a refrigerator includes two or more storage compartments, each compartment may have a different purpose and be maintained at different temperatures. To achieve this, each storage compartment may be separated from the others by a partition wall containing insulation.

[0039] The storage room may be designed to maintain an appropriate temperature range depending on its intended use, and may include a "refrigerator," a "freezer," or a "variable temperature room," which are distinguished by their intended use and / or temperature range. A refrigerator may be maintained at a temperature appropriate for refrigerating items, and a freezer may be maintained at a temperature appropriate for freezing items. "Refrigeration" may mean cooling items to a temperature that does not freeze them, and for example, a refrigerator may be maintained at a temperature ranging from 0 degrees Celsius to +7 degrees Celsius. "Freezing" may mean cooling items to freeze them or keep them frozen, and for example, a freezer may be maintained at a temperature ranging from -20 degrees Celsius to -1 degree Celsius. A variable temperature room may be used as either a refrigerator or a freezer, at the user's option or not.

[0040] In addition to names such as "refrigerator," "freezer," and "variable temperature room," a storage room may also be called by various other names such as "vegetable room," "fresh room," "cooling room," and "ice room." The terms "refrigerator," "freezer," and "variable temperature room" used hereinafter should be understood to encompass storage rooms having corresponding uses and temperature ranges.

[0041] In one embodiment, the refrigerator may include at least one door configured to open and close an open side of a storage compartment. The door may be configured to open and close one or more storage compartments, or a single door may be configured to open and close multiple storage compartments. The door may be installed on the front of the main body in a pivotal or sliding manner.

[0042] The "door" may be configured to seal the storage compartment when the door is closed. The door may include insulation, similar to the body, to insulate the storage compartment when the door is closed.

[0043] According to one embodiment, the door may include a door outer panel forming the front of the door, a door inner panel forming the back of the door and facing the storage compartment, an upper cap, a lower cap, and door insulation provided on the interior of these.

[0044] The door inner panel may be provided with a gasket that seals the storage compartment by contacting the front of the body when the door is closed. The door inner panel may include a dyke that protrudes rearward to accommodate a door basket for storing items.

[0045] In one embodiment, the door may include a door body and a front panel detachably coupled to the front side of the door body and forming the front of the door. The door body may include a door outer panel forming the front of the door body, a door inner panel forming the rear of the door body and facing the storage compartment, an upper cap, a lower cap, and door insulation provided inside these.

[0046] Depending on the arrangement of the door and storage compartment, refrigerators can be classified into French door type, side-by-side type, bottom mounted freezer (BMF), top mounted freezer (TMF), or single-door refrigerator.

[0047] According to one embodiment, the refrigerator may include a cold air supply device configured to supply cold air to the storage compartment.

[0048] A "cold air supply device" may include a system of machines, devices, electronic devices and / or combinations thereof that can generate cold air and guide the cold air to cool a storage room.

[0049] In one embodiment, the cold air supply device can generate cold air through a refrigeration cycle that includes the processes of compression, condensation, expansion, and evaporation of a refrigerant. To this end, the cold air supply device can include a refrigeration cycle device having a compressor, a condenser, an expansion device, and an evaporator capable of driving the refrigeration cycle. In one embodiment, the cold air supply device can include a semiconductor, such as a thermoelectric element. The thermoelectric element can cool a storage compartment through heat generation and cooling through the Peltier effect.

[0050] According to one embodiment, the refrigerator may include a machine room in which at least some components belonging to the cold air supply device are arranged.

[0051] The "machine room" may be designed to be partitioned and insulated from the storage room to prevent heat generated by components placed within the machine room from being transferred to the storage room. The interior of the machine room may be configured to be in communication with the exterior of the main body to dissipate heat from components placed within the machine room.

[0052] In one embodiment, the refrigerator may include a dispenser provided on the door to provide water and / or ice. The dispenser may be provided on the door so that it is accessible to a user without having to open the door.

[0053] According to one embodiment, a refrigerator may include an ice-making device configured to produce ice. The ice-making device may include an ice-making tray configured to store water, an ice-separating device configured to separate ice from the ice-making tray, and an ice bucket configured to store ice produced in the ice-making tray.

[0054] According to one embodiment, the refrigerator may include a control unit for controlling the refrigerator.

[0055] The "control unit" may include a memory that stores or memorizes a program and / or data for controlling the refrigerator, and a processor that outputs a control signal for controlling a cold air supply device, etc. according to the program and / or data memorized in the memory.

[0056] Memory stores or records various information, data, commands, programs, etc. necessary for the operation of the refrigerator. Memory can store temporary data generated during the generation of control signals for controlling components within the refrigerator. Memory may include at least one of volatile memory and non-volatile memory, or a combination thereof.

[0057] The processor controls the overall operation of the refrigerator. The processor can control the components of the refrigerator by executing programs stored in memory. The processor may include a separate NPU that performs the operations of an artificial intelligence model. The processor may also include a central processing unit (CPU), a graphics processing unit (GPU), or the like. The processor may generate control signals to control the operation of the cooling system. For example, the processor may receive temperature information about the storage compartment from a temperature sensor and generate a cooling control signal to control the operation of the cooling system based on the temperature information.

[0058] Additionally, the processor may process user input of the user interface and control the operation of the user interface based on programs and / or data stored / stored in the memory. The user interface may be provided using an input interface and an output interface. The processor may receive user input from the user interface. Additionally, the processor may transmit display control signals and image data to the user interface for displaying an image on the user interface in response to the user input.

[0059] The processor and memory may be provided as a single unit or separately. The processor may include one or more processors. For example, the processor may include a main processor and at least one subprocessor. The memory may include one or more memories.

[0060] In one embodiment, a refrigerator may include a processor and memory that control all components within the refrigerator, and may include multiple processors and multiple memories that individually control the components within the refrigerator. For example, the refrigerator may include a processor and memory that control the operation of a cooling device based on the output of a temperature sensor. Additionally, the refrigerator may separately include a processor and memory that control the operation of a user interface based on user input.

[0061] The communication module (communication interface) can communicate with external devices such as servers, mobile devices, and other home appliances via a nearby access point (AP). The access point (AP) can connect the local area network (LAN) where the refrigerator or user device is connected to the wide area network (WAN) where the server is connected. The refrigerator or user device can then connect to the server via the wide area network (WAN).

[0062] The input interface may include keys, a touchscreen, a microphone, etc. The input interface may receive user input and transmit it to the processor.

[0063] The output interface may include a display, a speaker, etc. The output interface may output various notifications, messages, information, etc. generated by the processor.

[0064] Hereinafter, refrigerators according to various embodiments will be specifically described with reference to the attached drawings.

[0065] FIG. 1 is a drawing for explaining a water supply system of a refrigerator (1000) according to one embodiment of the present disclosure.

[0066] Referring to FIG. 1, a refrigerator (1000) according to one embodiment of the present disclosure may include a water tank (1100) for storing water for supplying at least one water supply system. The water tank (1100) may be located in a portion of a space within a refrigerator compartment. The water tank (1100) may be located between storage compartments (e.g., multi-pantries) or may be located on the side.

[0067] The maximum amount of water that can be stored in the water tank (1100) may be approximately 4.5 liters, but is not limited thereto. The amount of water stored in the water tank (1100) may be reduced by supplying water to at least one water supply system.

[0068] The water supply system is a device that operates by receiving water from a water tank (1100), and may include, for example, at least one of an ice maker (1200), an auto-fill device (1300), or a dispenser (1400), but is not limited thereto. Depending on the product model, the refrigerator (1000) may include only an ice maker (1200), or may include all of an ice maker (1200), an auto-fill device (1300), and a dispenser (1400).

[0069] The ice making device (1200) may include, but is not limited to, an ice making tray in which water for ice making is stored and ice is made, an ice separator for separating ice made in the ice making tray, an ice separating motor for rotating the ice separator, an ice making cover for guiding ice separated from the ice making tray to an ice separator (hereinafter, also referred to as an ice storage container), and a slider for preventing ice separated from the ice making tray from returning to the ice making tray. The ice making tray may include a plurality of ice making cells, and when water stored in a water tank (1100) is supplied to the ice making tray, water for ice making may be stored in each of the ice making cells. The ice separator is provided on the upper portion of the ice making tray and can separate ice in the ice making tray after ice is made. The ice separating motor generates a rotational force and rotates the ice separator clockwise or counterclockwise.

[0070] The autofill device (1300) may include a small water tank that stores automatically supplied water. The small water tank may also be referred to as an autofill water tank. The user can take the small water tank out of the refrigerator (1000) and drink cool water. The small water tank included in the autofill device (1300) may also include an infuser into which a tea bag can be inserted.

[0071] The autofill device (1300) may include a water tank sensor that detects whether a small water tank (autofill water tank) is installed and a water level sensor that detects the water level of the small water tank. If the water tank sensor detects that the small water tank is installed, water may be automatically supplied from the water tank (1100) to the autofill device (1300) so that the small water tank is filled with a predetermined amount of water. If the water tank sensor detects that the small water tank (autofill water tank) is not installed, the water supply from the water tank (1100) to the autofill device (1300) may be blocked.

[0072] Meanwhile, when the water level sensor detects that a predetermined amount of water is stored in the small water tank (autofill water tank), the water supply from the water tank (1100) to the autofill device (1300) may be blocked. On the other hand, when the water level sensor detects that the predetermined amount of water is not stored in the small water tank (autofill water tank), water may be supplied from the water tank (1100) to the autofill device (1300). That is, at least one processor of the refrigerator (1000) may control the water supply pump so that a predetermined amount of water is maintained in the small water tank (autofill water tank) when the autofill function is activated.

[0073] The dispenser (1400) may be a device that provides purified water and / or ice. The dispenser (1400) may include a water intake space and an operating lever. The dispenser (1400) may supply water to the water intake space by manual operation of the operating lever. For example, when a user presses the operating lever, at least one processor of the refrigerator (1000) supplies water from the water tank (1100) to the dispenser (1400), thereby allowing water to flow into the water intake space through the nozzle of the dispenser (1400).

[0074] Since the water supply system (e.g., ice maker (1200), autofill device (1300), dispenser (1400)) is a device that operates by receiving water from a water tank (1100), the water tank (1100) must be filled with water in order for the user to use the water supply system. Accordingly, the user can fill the water tank (1100) with water if there is no water in the water tank (1100). For example, referring to 110 of FIG. 1, the user can open the water inlet cover located at the top of the water tank (1100) and pour water into the water tank (1100) through the water inlet.

[0075] Meanwhile, if a user does not use the water supply system for a long period of time after storing water in the water tank (1100), the water stored in the water tank (1100) may become contaminated. For example, referring to 120 of FIG. 1, if water in the water tank (1100) is not discharged for a long period of time, mold may grow in the remaining water, or water stains may form on the water tank (1100) or hose, which may be unsanitary.

[0076] Accordingly, according to one embodiment of the present disclosure, when the refrigerator (1000) detects that the water in the water tank (1100) has not been discharged for a predetermined period of time using a water detection sensor that detects water in the water tank (1100), the refrigerator (1000) controls the pump to discharge the water in the water tank (1100) to an evaporation tray in the machine room, thereby allowing the water to naturally evaporate in the evaporation tray. At this time, the refrigerator (1000) discharges the water in the water tank (1100) to the evaporation tray using a discharge path of the defrost water, so that the equipment can be substantially changed.

[0077] According to one embodiment of the present disclosure, the refrigerator (1000) may first determine whether the water supply system can accommodate water before discharging water from the water tank (1100) to the evaporation tray. If the water supply system has the capacity to accommodate water, the refrigerator (1000) may first supply water to the water supply system and then discharge the remaining water to the evaporation tray within the machine room.

[0078] That is, according to one embodiment of the present disclosure, the refrigerator (1000) can forcibly discharge water stored in the water tank (1100) to a water supply system or evaporation tray after a certain period of time to prevent contamination from occurring or spreading due to residual or stagnant water in the water tank (1100). The operation of the refrigerator (1000) forcibly discharging water stored in the water tank (1100) will be described in detail later with reference to FIG. 7.

[0079] Meanwhile, if the pump operates to supply water to the water supply system when the water stored in the water tank (1100) is discharged and there is no water in the water tank (1100), the pump motor is likely to rapidly heat up, shortening its lifespan or causing damage. For example, if the user presses the operating lever of the dispenser (1400) or operates the ice-making function and / or the auto-fill function when there is no water in the water tank (1100), the refrigerator (1000) automatically attempts to supply water to the dispenser (1400), the ice-making device (1200), or the auto-fill device (1300), which may cause the pump motor to malfunction or be damaged, and the operating noise of the pump motor may increase. Therefore, according to one embodiment of the present disclosure, the refrigerator (1000) detects that there is no water in the water tank (1100) and notifies the user, thereby allowing the user to fill the water tank (1100) with water. The operation of the refrigerator (1000) to provide a notification to refill water in the water tank (1100) will be discussed in detail later with reference to FIG. 18.

[0080] Below, with reference to FIGS. 2 to 5, we will look in more detail at the water tank (1100) and the water detection sensor that detects water stored in the water tank (1100).

[0081] FIG. 2 is a drawing for explaining a water tank (1100) and a water detection sensor (1500) according to one embodiment of the present disclosure. FIG. 3 is a drawing for explaining the shape of the lower portion of a water tank (1100) according to one embodiment of the present disclosure. FIG. 4 is a drawing for explaining the position of a water detection sensor (1500) according to one embodiment of the present disclosure.

[0082] Referring to FIG. 2, a refrigerator (1000) according to one embodiment of the present disclosure may include, but is not limited to, a water tank (1100), a water detection sensor (1500), and at least one processor (1600). The refrigerator (1000) may be implemented with more components than those illustrated in FIG. 2.

[0083] Below, we will examine each configuration.

[0084] The water tank (1100) may include, but is not limited to, a main body (1101), a top cover (1102), a water inlet cover (1103), a gasket (1104), a hose (1105), a filter (1006), etc. The main body (1101) may include a storage space in which water is stored. The storage space may accommodate up to 4.5 liters of water, but is not limited thereto.

[0085] A water inlet cover (1103) may be provided on a portion of the top cover (1102). A user can fill the storage space with water by opening the water inlet cover (1103) and pouring water into the water inlet. The gasket (1104) may be a sealing gasket for joining the water tank body (1101) and the top cover (1102).

[0086] The hose (1105) may be a pipe for supplying water to the water supply system. There may be a plurality of hoses (1105) depending on the type of the water supply system. For example, the hose (1105) may include, but is not limited to, a first hose for supplying water to the ice maker (1200), a second hose for supplying water to the autofill device (1300) or the dispenser (1400). According to one embodiment of the present disclosure, the hose (1105) may also include a third hose (hereinafter also referred to as a water tank hose) for discharging water to a drain plate of the evaporator. Hereinafter, the hose (1105) may also be expressed as a nozzle.

[0087] The filter (1006) is for filtering out foreign substances in the water stored in the water tank (1100). If there are multiple hoses (1105), there may also be multiple filters (1106).

[0088] The water detection sensor (1500) may be a sensor for detecting water stored in a water tank (1100). The water detection sensor (1500) may also be expressed as a water level sensor. The water detection sensor (1500) may be a non-contact sensor or a contact sensor. The non-contact sensor may include, but is not limited to, a capacitive sensor or a weight detection sensor. The case where the water detection sensor (1500) is a weight detection sensor (e.g., a load cell) will be described later with reference to FIG. 5, and the case where the water detection sensor (1500) is a capacitive sensor will be described in FIGS. 2 to 4.

[0089] The water detection sensor (1500) may be placed at a position corresponding to the lower end of the water tank (1100). According to one embodiment of the present disclosure, if there is a step on the bottom surface of the water tank (1100), the water detection sensor (1500) may be placed at a position corresponding to the lowest end among the lower ends of the water tank (1100).

[0090] Referring to FIG. 3, the bottom surface of the water tank (1100) may have various shapes to minimize residual water in the water tank (1100) and to detect the remaining water even if the amount of water remaining in the water tank (1100) is very small, thereby reducing false detection of water in the water tank (1100). For example, the bottom surface of the water tank (1100) may have a slope (e.g., 310, 320, 330, etc.), may be spherical (e.g., 340), may have a center convex downward (e.g., 340, 350, 360), may be funnel-shaped (e.g., 330, 360), but is not limited thereto as long as the area inside the bottom portion is smaller than the area inside other portions of the water tank (1100) on a plane where the direction of gravity and the normal direction are parallel. The water detection sensor (1500) is positioned at a position corresponding to the lowest end of the bottom surface of the water tank (1100), thereby minimizing false detection of residual water in the water tank (1100).

[0091] Referring to FIG. 4, the water detection sensor (1500) may be disposed at the lower end (310) of the first surface that is in contact with the rear surface of the water tank (1100) when the water tank (1100) is installed in the refrigerator (1000). The water detection sensor (1500) disposed at the lower end (310) of the first surface can identify whether water exists in the water tank (1100) accommodated in the refrigerator (1000) by detecting a change in electrostatic capacity. The water detection sensor (1500) may transmit a signal that water is detected in the water tank (1100) or a signal that water is not detected in the water tank (1100) to at least one processor (1600). Since the water detection sensor (1500) is disposed at a position corresponding to the lowest end of the bottom surface of the water tank (1100), when water is not detected by the water detection sensor (1500), there may be no remaining water in the water tank (1100). On the other hand, if water is detected by the water detection sensor (1500), there may be residual water in the water tank (1100).

[0092] Referring back to FIG. 2, the refrigerator (1000) may include at least one processor (1600). The refrigerator (1000) may include one processor or may include multiple processors. For example, the refrigerator (1000) may include a main processor and a sub-processor. The at least one processor (1600) may control the overall operation of the refrigerator (1000). For example, when water stored in the water tank (1100) is detected for a predetermined period of time or longer through the water detection sensor (1500), the at least one processor (1600) may control a pump to discharge the water stored in the water tank (1100) to the evaporation tray located below the condenser in the machine room using the defrost water discharge passage. The operation of the at least one processor (1600) to discharge the water stored in the water tank (1100) to the evaporation tray using the defrost water discharge passage will be described in detail later with reference to FIG. 7.

[0093] At least one processor (1600) according to the present disclosure may include at least one of a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), an Accelerated Processing Unit (APU), a Many Integrated Core (MIC), a Digital Signal Processor (DSP), and a Neural Processing Unit (NPU). The at least one processor (1600) may be implemented in the form of an integrated system on a chip (SoC) including one or more electronic components. Each of the at least one processor (1600) may be implemented as a separate hardware (H / W). The at least one processor (1600) may also be expressed as a Micro-Computer, Microprocessor Computer, Microprocessor controller (MICOM), a Micro Processor unit (MPU), or a Micro Controller Unit (MCU).

[0094] At least one processor (1600) according to the present disclosure may be implemented as a single core processor or as a multicore processor.

[0095] Hereinafter, with reference to FIG. 5, a weight detection type water detection sensor (1500) will be examined.

[0096] FIG. 5 is a drawing for explaining a water detection sensor (1500) according to one embodiment of the present disclosure.

[0097] Referring to FIG. 5, the water detection sensor (1500) may include a weight detection sensor (1501). Hereinafter, the weight detection sensor (1501) may be expressed as a load cell.

[0098] The weight detection sensor (1501) may be positioned at a position where the bottom surface of the water tank (1100) is placed when the water tank (1100) is accommodated in the refrigerator (1000). Accordingly, the bottom surface of the water tank (1100) may be designed to have a structure that can be in close contact with the weight detection sensor (1501) (e.g., load cell). The weight detection sensor (1510) may detect whether there is water in the water tank (1100) by detecting the weight of the water tank (1100) containing water.

[0099] The weight detection sensor (1501) can transmit a signal that water is detected in the water tank (1100) or a signal that water is not detected in the water tank (1100) to at least one processor (1600).

[0100] Meanwhile, although not illustrated in FIGS. 2 to 5, a distance detection sensor may be provided on the consultation cover (1102). In this case, the distance detection sensor can identify a change in the water level of the water tank (1100) by measuring the distance from the consultation cover (1102) to the water stored in the water tank (1100). The distance detection sensor may include, but is not limited to, at least one of an optical sensor (e.g., a Time of Flight (ToF) sensor, a Position Sensitive Device (PSD), etc.), a lidar sensor, or an ultrasonic sensor.

[0101] FIG. 6 is a drawing for explaining a system for discharging water from a water tank (1100) according to one embodiment of the present disclosure.

[0102] The water tank (1100) can be connected to an autofill device (1300), a dispenser (1400), an ice maker (1200), or an evaporator (1700) through internal piping.

[0103] At least one processor (1600) of the refrigerator (1000) can control the water pump (610) so that a predetermined amount of water can be maintained in the autofill device (1300) when the autofill function is activated. For example, when water is not filled up to the reference line of a small water tank included in the autofill device (1300), at least one processor (1600) of the refrigerator (1000) can operate the water pump (610). At this time, water stored in the water tank (1100) can be supplied to the autofill device (1300) through the autofill valve (611). Hereinafter, a state in which water is filled up to the reference line of the small water tank can be expressed as a full water state.

[0104] At least one processor (1600) of the refrigerator (1000) can control the water pump (610) to supply water to the dispenser (1400) according to the user's lever operation. For example, when the user presses the lever, at least one processor (1600) of the refrigerator (1000) can operate the water pump (610). At this time, water stored in the water tank (1100) can be supplied to the dispenser (1400) through the dispenser valve (612).

[0105] At least one processor (1600) of the refrigerator (1000) may control the ice pump (620) to maintain a predetermined amount of ice in the ice storage container when the automatic ice-making function is activated. For example, when the ice storage container is filled with less than the predetermined amount of ice, at least one processor (1600) of the refrigerator (1000) may operate the ice pump (620). At this time, water stored in the water tank (1100) may be supplied to the ice-making tray. Hereinafter, a state in which the ice storage container is filled with ice to the maximum capacity may be expressed as a full ice state.

[0106] At least one processor (1600) of the refrigerator (1000) can control the evaporator pump (630) to discharge the water in the water tank (1100) to the evaporation tray (1801) in the machine room (1800) through the discharge path of the defrost water when the water in the water tank (1100) is not discharged for a predetermined period of time or longer. For example, when the water in the water tank (1100) is not supplied to the ice maker (1200), the autofill device (1300), or the dispenser (1400) for a predetermined period of time or longer (e.g., 30 hours) and water remains in the water tank, at least one processor (1600) of the refrigerator (1000) can operate the evaporator pump (630) to discharge the water in the water tank (1100) to the evaporation tray (1801) under the condenser (1802) in the machine room (1800) through the drain surface of the evaporator (1700). Water discharged to the evaporation tray (1801) can be naturally evaporated by the heat generated in the condenser (1802) and the wind generated by the blower fan (1803).

[0107] Hereinafter, the evaporator pump (630) may be expressed as the first pump, the ice pump (620) as the second pump, and the water pump (610) as the third pump.

[0108] Referring to FIG. 7, let us examine in more detail the operation of the refrigerator (1000) to discharge residual water in the water tank (1100) through the discharge path of the water to the evaporation tray (1801) in the machine room (1800).

[0109] FIG. 7 is a drawing for explaining a system for discharging water from a water tank (1100) to an evaporation tray (1801) according to one embodiment of the present disclosure.

[0110] When the refrigerator (1000) detects water stored in the water tank (1100) for a predetermined period of time or longer through the water detection sensor (1500), the refrigerator (1000) can control the first pump to discharge the water stored in the water tank (1100) to the evaporation tray (1801) at the bottom of the condenser (1802) in the machine room (1800) using the discharge passage of the defrost water.

[0111] The discharge passage of the evaporator (1700) may include a drain pipe (1720) that is connected from a drain plate (1710) at the bottom of the evaporator (1700) to an evaporation tray (1801) in the machine room (1800). The drain pipe (1720) may be expressed as a drain hose. The drain pipe (1720) may be formed as a corrugated hose having circular corrugations or may be formed as a corrugated hose having spiral corrugations.

[0112] The drain pipe (1720) may be composed of a single section or multiple sections. The drain pipe (1720) may guide the defrost water generated in the evaporator (1700) to move to the machine room (1800). The defrost water may move to the floor of the machine room (1800) through the drain pipe (1720). An evaporation tray (1801) into which the defrost water flows may be positioned on the floor of the machine room (1800).

[0113] The machine room (1800) may include, but is not limited to, a compressor (1804), a condenser (1802), and a blower fan (1803). The compressor (1804) compresses the refrigerant to a high temperature and high pressure state. The compressor (1804) may receive electric energy from the outside and use the rotational force of an electric motor or the like to compress the gaseous refrigerant to a high temperature and high pressure state. The compressor (1804) may be connected to the condenser (1802) and move the compressed refrigerant to the condenser (1802). The compressor (1804) compresses the refrigerant and pushes it to the condenser (1802), thereby operating the refrigeration cycle of compression, condensation, expansion, and evaporation. Therefore, when the compressor (1804) is in operation, the cold air generated in the evaporator (1700) is supplied to the storage room.

[0114] The condenser (1802) condenses the high-temperature, high-pressure refrigerant compressed from the compressor (1804). The condenser (1802) dissipates heat generated while condensing the refrigerant. The condensed refrigerant passing through the condenser (1802) moves to the expansion valve. The refrigerant condensed in the condenser (1802) becomes a low-temperature, low-pressure liquid while passing through the expansion valve. The liquid refrigerant passes through the expansion valve and moves to the evaporator (1700).

[0115] The evaporator (1700) evaporates the low-temperature, low-pressure liquid refrigerant that has passed through the expansion valve. As the liquid refrigerant evaporates, heat exchange occurs with the surrounding gas in the evaporator (1700). As the liquid refrigerant evaporates, it absorbs latent heat from the surroundings, thereby cooling the gas surrounding the evaporator (1700) and generating cold air. The completely evaporated refrigerant is supplied back to the compressor (1804) to circulate the cooling cycle. A heater may be provided around the evaporator (1700) to remove frost formed on the evaporator (1700).

[0116] Referring to FIG. 7, a water tank hose (1110) for discharging water from a water tank (1100) may be connected to a drain surface (1710) at the bottom of an evaporator (1700). The drain surface (1710) at the bottom of the evaporator (1700) may be a surface where defrost water generated as a heater around the evaporator (1700) is operated is collected. The drain surface (1710) may include a drain hole (1711).

[0117] At least one processor (1600) of the refrigerator (1000) can operate the first pump (evaporator pump) (630) so that water in the water tank (1100) moves to the drain surface (1710) below the evaporator (1700) through the water tank hose (1110). The water tank (1100) can be located lower than the evaporator (1700). Water discharged from the water tank (1100) to the drain surface (1710) through the water tank hose (1110) can flow into the drain pipe (1720) through the drain port (1711) of the drain surface (1710) and reach the evaporation tray (1801). That is, the remaining water in the water tank (1100) can be discharged to the evaporation tray (1801) in the machine room (1800) using the discharge path of the defrost water. Accordingly, according to one embodiment of the present disclosure, at least one processor (1600) of the refrigerator (1000) can prevent the water tank (1100) from being contaminated by mold or the like by discharging the remaining water in the water tank (1100) to the evaporation tray (1801) when the water in the water tank (1100) is not used for a long period of time.

[0118] Meanwhile, water discharged to the evaporation tray (1801) can be naturally evaporated by the heat generated from the condenser (1802) and the wind generated by the blower fan (1803). Therefore, since the user does not have to separately empty the water collected in the evaporation tray (1801), user convenience can be increased.

[0119] According to one embodiment of the present disclosure, at least one processor (1600) of the refrigerator (1000) can adjust the rotations per minute (RPM) of the blower fan (1803) in the machine room (1800) to the maximum level as water stored in the water tank (1100) is discharged to the evaporation tray (1801). When the RPM of the blower fan (1803) is adjusted to the maximum level, water discharged to the evaporation tray (1801) can be evaporated more quickly.

[0120] Referring to FIG. 8, a method for determining the timing or amount of discharge of water stored in a water tank (1100) by at least one processor (1600) of a refrigerator (1000) will be described in detail with reference to FIG. 8.

[0121] FIG. 8 is a flowchart for explaining a method for determining the discharge timing or discharge amount of water stored in a water tank (1100) according to one embodiment of the present disclosure.

[0122] In step S810, the refrigerator (1000) according to one embodiment of the present disclosure can detect water stored in the water tank (1100) for a predetermined period of time or longer through the water detection sensor (1500).

[0123] For example, if a water detection sensor (1500) positioned at a position corresponding to the lowest end of the lower part of a water tank (1100) continuously detects water for a predetermined period of time (e.g., 24 hours) or more, at least one processor (1600) of the refrigerator (1000) may determine that water has not been completely discharged from the water tank (1100) and has been stored for a long period of time (e.g., 24 hours or more). At this time, at least one processor (1600) of the refrigerator (1000) may determine that water in the water tank (1100) should be discharged to the evaporation tray (1801) in order to prevent the water tank (1100) or the water inside the water tank (1100) from being contaminated.

[0124] In step S820, the refrigerator (1000) according to one embodiment of the present disclosure can determine the discharge timing of water stored in the water tank (1100) by considering the discharge operation cycle of the water.

[0125] According to one embodiment of the present disclosure, since the water in the water tank (1100) is discharged to the evaporation tray (1801) through the discharge path of the defrost water, the discharge timing of the water stored in the water tank (1100) can be determined by considering the discharge operation cycle of the defrost water. That is, at least one processor (1600) of the refrigerator (1000) can control the operation timing of the defrost heater and the operation timing of the first pump (630) for discharging the residual water in the water tank (1100) so as not to overlap. For example, at least one processor (1600) of the refrigerator (1000) may operate the defrost heater and the first pump (630) alternately, but is not limited thereto.

[0126] Referring to the graph (910) of Fig. 9, the refrigerator (1000) can discharge defrost water at an average interval of three days. That is, at least one processor (1600) of the refrigerator (1000) can discharge defrost water by operating the defrost heater at an interval of three days. Referring to the table (920) of Fig. 9, the initial defrost amount is about 500 g, but the defrost amount gradually decreases thereafter, and the defrost amount after the third defrost may be only about 110 g. Initially, since the water in the water tank (1100) is not stored for more than a predetermined period of time, the timing of discharge of residual water is not a problem, and from the second defrost onwards, the defrost amount is not large, so the defrost water can be evaporated in the evaporation tray (1801) within 24 hours. Accordingly, at least one processor (1600) of the refrigerator (1000) can operate the first pump (630) for discharging residual water in the water tank (1100) after 24 hours have passed since the defrosting heater was operated, taking into account the defrosting water discharge operation cycle.

[0127] Meanwhile, since the amount of water to be discharged to the evaporation tray (1801) at a time is determined to be small after the third defrost, the refrigerator (1000) may determine the timing of discharge of residual water without greatly considering the defrosting cycle. In this case, step S820 may be omitted.

[0128] In step S830, the refrigerator (1000) according to one embodiment of the present disclosure can determine the amount of water that can be discharged at one time based on the capacity of the evaporation tray (1801).

[0129] According to one embodiment of the present disclosure, the capacity of the water tank (1100) may be greater than the capacity of the evaporation tray (1801). In this case, if the water stored in the water tank (1100) is discharged to the evaporation tray (1801) at once, the water may overflow into the machine room (1800), so at least one processor (1600) of the refrigerator (1000) may determine the amount of water that can be discharged at once based on the capacity of the evaporation tray (1801).

[0130] For example, if the capacity of the evaporation tray (1801) is 1.5 liters, at least one processor (1600) of the refrigerator (1000) may determine the amount of water that can be discharged at one time to be less than 1.5 liters. For example, at least one processor (1600) of the refrigerator (1000) may determine the amount of water that can be discharged at one time to be 1 liter.

[0131] According to one embodiment of the present disclosure, the refrigerator (1000) may determine the amount of water that can be discharged at one time by further considering the amount of defrost. For example, if the capacity of the evaporation tray (1801) is 1.5 liters and the amount of defrost is 100 g, at least one processor (1600) may determine the amount of water that can be discharged at one time to be less than 1.4 liters.

[0132] In step S840, the refrigerator (1000) according to one embodiment of the present disclosure may operate the first pump (630) for a period of time corresponding to the determined amount of water. The first pump (630) may be a pump for discharging water in the water tank (1100) to the evaporation tray (1801). When the first pump (630) operates, the water in the water tank (1100) may move to the drain surface (1710) at the bottom of the evaporator (1700), and the water moved to the drain surface (1710) may flow into the drain pipe (1720) through the drain port (1711) of the drain surface (1710) and be moved to the evaporation tray (1801).

[0133] According to one embodiment of the present disclosure, at least one processor (1600) of the refrigerator (1000) can operate the first pump (630) for a time corresponding to the amount of water that can be discharged at one time. For example, when the amount of water that can be discharged at one time is 1 liter, at least one processor (1600) of the refrigerator (1000) can operate the first pump (630) for 2 minutes, and when the amount of water that can be discharged at one time is 1.2 liter, at least one processor (1600) of the refrigerator (1000) can operate the first pump (630) for 2 minutes and 20 seconds. The numbers here are merely examples and are not limited thereto.

[0134] In step S850, the refrigerator (1000) according to one embodiment of the present disclosure can determine whether there is residual water in the water tank (1100).

[0135] According to one embodiment of the present disclosure, at least one processor (1600) of the refrigerator (1000) can determine whether there is residual water in the water tank (1100) after operating the first pump (630) for a period of time corresponding to the amount of water that can be discharged at one time. For example, at least one processor (1600) of the refrigerator (1000) can determine whether water is continuously detected by a water detection sensor (1500) positioned at a position corresponding to the lower end of the water tank (1100). If water is detected by the water detection sensor (1500), at least one processor (1600) can determine that there is residual water in the water tank (1100). On the other hand, if water is not detected by the water detection sensor (1500), at least one processor (1600) can determine that there is no residual water in the water tank (1100).

[0136] At least one processor (1600) may stop operating the first pump (630) if there is no residual water in the water tank (1100) (No in S850). Meanwhile, at least one processor (1600) may deactivate the operation of a pump (e.g., water pump, ice pump) that supplies water to the water supply system if there is no residual water in the water tank (1100). In addition, at least one processor (1600) may output a notification to replenish water in the water tank (1100). The operation of the refrigerator (1000) in the case where there is no residual water in the water tank (1100) will be described in detail later with reference to FIG. 17.

[0137] In step S860, the refrigerator (1000) according to one embodiment of the present disclosure can determine whether a predetermined time has elapsed from the time the first pump (630) was operated if there is residual water in the water tank (1100) (Yes in S850). Here, the predetermined time may be the time required for all water discharged to the evaporation tray (1801) to evaporate.

[0138] For example, the amount discharged from the water tank (1100) to the evaporation tray (1801) at a time is determined to be 1 liter, and 12 hours may be required for 1 liter to be completely evaporated. At this time, at least one processor (1600) of the refrigerator (1000) can determine whether 12 hours have passed since the 1 liter was first discharged to the evaporation tray (1801).

[0139] At least one processor (1600) of the refrigerator (1000) can continuously monitor whether there is residual water in the water tank (1100) without operating the first pump (630) again if a predetermined time has not elapsed since the first pump (630) was operated (No of S860).

[0140] At least one processor (1600) of the refrigerator (1000) determines that all water discharged to the evaporation tray (1801) has evaporated when a predetermined time has elapsed from the time of operating the first pump (630) (S860), and may discharge the remaining water in the water tank (1100) again. For example, at least one processor (1600) of the refrigerator (1000) may operate the first pump (630) again for a time corresponding to the amount of water that can be discharged at one time.

[0141] That is, according to one embodiment of the present disclosure, at least one processor (1600) of the refrigerator (1000) can operate the first pump (630) multiple times at predetermined time intervals when the amount of water stored in the water tank (1100) exceeds the amount of water that can be discharged at one time. For example, when the amount of water stored in the water tank (1100) is 4 liters and the amount of water that can be discharged at one time is 1 liter, at least one processor (1600) can operate the first pump (630) four times at predetermined time intervals.

[0142] Meanwhile, according to one embodiment of the present disclosure, the evaporation tray (1801) may include an overflow sensor. When at least one processor (1600) detects that a predetermined amount of water has collected in the evaporation tray (1801) through the overflow sensor, the processor may control the first pump (630) to block discharge to the evaporation tray (1801). When the evaporation tray (1801) includes an overflow sensor, the processor may operate the first pump (630) according to a signal from the overflow sensor without having to determine the amount of water that can be discharged at one time, and thus steps S830 and S840 of FIG. 8 may be omitted.

[0143] Hereinafter, with reference to FIGS. 10 to 12, the operation of the refrigerator (1000) first supplying water to a water supply system (e.g., ice maker (1200), autofill device (1300)) before discharging water from a water tank (1100) to an evaporation tray (1801) will be described.

[0144] FIG. 10 is a flowchart illustrating a method for discharging water from a water tank (1100) according to one embodiment of the present disclosure. FIG. 11 is a diagram illustrating an operation for supplying water from a water tank (1100) to an ice making device (1200) according to one embodiment of the present disclosure. FIG. 12 is a diagram illustrating an operation for supplying water from a water tank (1100) to an autofill device (1300) according to one embodiment of the present disclosure.

[0145] In step S1010, a refrigerator (1000) according to one embodiment of the present disclosure can detect water stored in a water tank (1100) for a predetermined period of time or longer through a water detection sensor (1500).

[0146] According to one embodiment of the present disclosure, when a water detection sensor (1500) positioned at a position corresponding to the lowest end among the lower ends of a water tank (1100) continuously detects water for a predetermined period of time (e.g., 30 hours) or longer, at least one processor (1600) of the refrigerator (1000) can determine that water has not been completely discharged from the water tank (1100) and has been stored for a long period of time (e.g., 30 hours or longer).

[0147] According to one embodiment of the present disclosure, at least one processor (1600) of the refrigerator (1000) can determine whether at least one water supply system is capable of receiving water when water stored in the water tank (1100) is detected for a predetermined period of time or longer through the water detection sensor (1500). When at least one water supply system is capable of receiving water, the at least one processor (1600) can supply at least a portion of the water stored in the water tank (1100) to at least one water supply system before discharging the water in the water tank (1100) to the evaporation tray (1801).

[0148] In step S1020, the refrigerator (1000) according to one embodiment of the present disclosure can determine whether forced ice making is possible if water stored in the water tank (1100) is detected for a predetermined period of time or longer through the water detection sensor (1500). A state in which forced ice making is possible may include a state in which the ice storage container is not full of ice.

[0149] According to one embodiment of the present disclosure, the ice making device (1200) may include a full ice detection sensor for detecting the fullness of ice stored in an ice storage container. Detecting the fullness of ice may mean detecting whether the ice storage container is full of ice to its maximum capacity.

[0150] According to one embodiment of the present disclosure, the ice fullness detection sensor may be implemented in the form of a detection lever that detects physical contact with ice at the top of the ice storage container. For example, during an ice-storage operation, a bar equipped with an ice fullness detection sensor may be lowered into the ice storage container to detect whether the ice stored in the ice storage container is full. In this case, the ice fullness detection sensor may include a Hall sensor.

[0151] According to one embodiment of the present disclosure, a full ice detection sensor may include a light emitting unit that irradiates light toward an ice storage container and a light receiving unit that receives light reflected from ice contained in the ice storage container. The full ice detection sensor may detect whether the ice is full based on the intensity of the light received by the light receiving unit. However, examples of full ice detection sensors are not limited thereto.

[0152] According to one embodiment of the present disclosure, at least one processor (1600) of a refrigerator (1000) may determine that forcible ice making is possible when the ice height in an ice storage container included in an ice making device (1200) is below a threshold height. For example, at least one processor (1600) of the refrigerator (1000) may determine that the ice storage container is not full through an ice full detection sensor. At least one processor (1600) may determine that additional ice making is possible because the ice storage container is not full.

[0153] In step S1030, the refrigerator (1000) can supply water to the ice making device (1200) if forced ice making is possible.

[0154] Referring to FIG. 11, at least one processor (1600) of the refrigerator (1000) can control the second pump (ice pump) (620) to supply at least a portion of the water stored in the water tank (1100) to the ice maker (1200) when forced ice making is possible. According to one embodiment of the present disclosure, even when the automatic ice making function of the refrigerator (1000) is deactivated, at least one processor (1600) can operate the second pump (620) to supply water in the water tank (1100) to the ice maker (1200) when the ice storage container (1201) is not full.

[0155] In step S1040, the refrigerator (1000) can determine whether there is residual water in the water tank (1100). For example, at least one processor (1600) of the refrigerator (1000) can determine whether there is residual water in the water tank (1100) after supplying at least a portion of the water stored in the water tank (1100) to the ice maker (1200). If only a portion of the water stored in the water tank (1100) is supplied to the ice maker (1200), residual water may exist in the water tank (1100). If all of the water stored in the water tank (1100) is supplied to the ice maker (1200), there may be no residual water in the water tank (1100).

[0156] According to one embodiment of the present disclosure, at least one processor (1600) of the refrigerator (1000) can determine whether there is residual water in the water tank (1100) using the water detection sensor (1500). For example, at least one processor (1600) of the refrigerator (1000) can determine whether water is continuously detected by the water detection sensor (1500) positioned at a position corresponding to the lower end of the water tank (1100). If water is detected by the water detection sensor (1500), at least one processor (1600) can determine that there is residual water in the water tank (1100). On the other hand, if water is not detected by the water detection sensor (1500), at least one processor (1600) can determine that there is no residual water in the water tank (1100).

[0157] In step S1050, the refrigerator (1000) according to one embodiment of the present disclosure may determine whether the auto-fill function can be performed forcibly. A state in which the auto-fill function can be performed forcibly may include a state in which a small water tank (hereinafter referred to as an "auto-fill water tank") included in the auto-fill device (1300) is not full.

[0158] Referring to Fig. 12, the autofill water tank (1310) may be composed of a lid (1311), an infuser (1312), and a body (1313), but is not limited thereto. When the autofill function is activated, a certain amount of water (e.g., 1.4 liters) can be maintained in the autofill water tank (1310).

[0159] According to one embodiment of the present disclosure, at least one processor (1600) of the refrigerator (1000) may determine that the autofill device (1300) is in a state where water can be supplied when the height of water stored in the autofill water tank (1310) is lower than a reference height (1314). Here, the reference height (1314) is a height that serves as a reference for determining the full water level of the autofill water tank (1310), and may be a height at which a water level sensor is located. That is, when water is detected by a water level sensor provided at a position corresponding to a full water reference line (i.e., the reference height (1314)), at least one processor (1600) may determine that the autofill water tank (1310) is in a full water state. On the other hand, if no water is detected by the water level sensor, at least one processor (1600) can determine that the autofill water tank (1310) is not full and thus the autofill device (1300) can be supplied with more water.

[0160] In step S1060, the refrigerator (1000) according to one embodiment of the present disclosure may supply at least a portion of the water stored in the water tank (1100) to the auto-fill device (1300) if the forced auto-fill function can be performed. For example, at least one processor (1600) of the refrigerator (1000) may supply at least a portion of the water stored in the water tank (1100) to the auto-fill device (1300) if the height of the water stored in the small water tank included in the auto-fill device (1300) is lower than a reference height.

[0161] Referring to FIG. 12, at least one processor (1600) of the refrigerator (1000) can control the third pump (water pump) (610) to supply at least a portion of the water stored in the water tank (1100) to the autofill device (1300) when the forced autofill function can be performed. At this time, when the water level sensor of the autofill device (1300) detects water, since the autofill water tank (1310) is full, at least one processor (1600) can stop the operation of the third pump (610).

[0162] According to one embodiment of the present disclosure, even if the autofill function of the refrigerator (1000) is disabled, at least one processor (1600) can operate the third pump (610) to supply water stored in the water tank (1100) to the autofill device (1300) for a predetermined period of time or longer.

[0163] In step S1070, the refrigerator (1000) according to one embodiment of the present disclosure may determine whether there is residual water in the water tank (1100). For example, at least one processor (1600) of the refrigerator (1000) may determine whether there is residual water in the water tank (1100) after supplying at least a portion of the water stored in the water tank (1100) to the autofill device (1300). If only a portion of the water stored in the water tank (1100) is supplied to the autofill device (1300), residual water may exist in the water tank (1100). If all of the water stored in the water tank (1100) is supplied to the autofill device (1300), there may be no residual water in the water tank (1100).

[0164] According to one embodiment of the present disclosure, at least one processor (1600) of the refrigerator (1000) can determine whether there is residual water in the water tank (1100) using the water detection sensor (1500). For example, at least one processor (1600) of the refrigerator (1000) can determine whether water is continuously detected by the water detection sensor (1500) positioned at a position corresponding to the lower end of the water tank (1100). If water is detected by the water detection sensor (1500), at least one processor (1600) can determine that there is residual water in the water tank (1100). On the other hand, if water is not detected by the water detection sensor (1500), at least one processor (1600) can determine that there is no residual water in the water tank (1100).

[0165] In step S1080, the refrigerator (1000) according to one embodiment of the present disclosure can discharge residual water in the water tank (1100) to the evaporation tray (1801) if there is residual water in the water tank (1100).

[0166] According to one embodiment of the present disclosure, when at least one processor (1600) of a refrigerator (1000) detects water stored in a water tank (1100) for a predetermined period of time or longer through a water detection sensor (1500), it can supply at least a portion of the water stored in the water tank (1100) to an ice maker (1200) or an autofill device (1300) and discharge the remaining water to an evaporation tray (1801) using a discharge path of defrost water.

[0167] Meanwhile, according to one embodiment of the present disclosure, at least one processor (1600) of the refrigerator (1000) may discharge all water stored in the water tank (1100) for a predetermined period of time or longer through the defrost water discharge path to the evaporation tray (1801) when forced ice making is impossible (No in S1020) and forced auto-fill function cannot be performed (No in S1050). For example, when the ice storage container (1201) of the ice maker (1200) is full and the auto-fill water tank (1310) of the auto-fill device (1300) is full, at least one processor (1600) may discharge all water stored in the water tank (1100) for a predetermined period of time or longer through the defrost water discharge path to the evaporation tray (1801).

[0168] In step S1090, the refrigerator (1000) according to one embodiment of the present disclosure may control the RPM of the blower fan (1803) to the maximum level. For example, at least one processor (1600) of the refrigerator (1000) may control the RPM of the blower fan (1803) to the maximum level to increase the evaporation rate of water discharged to the evaporation tray (1801).

[0169] According to one embodiment of the present disclosure, at least one processor (1600) of the refrigerator (1000) can prevent water in the water tank (1100) from being wasted by first supplying at least a portion of the water stored in the water tank (1100) to an ice maker (1200) or an autofill device (1300) if possible, when water stored in the water tank (1100) for a predetermined period of time or longer is detected.

[0170] Meanwhile, the refrigerator (1000) according to one embodiment of the present disclosure may provide a user with a notification to empty the water tank (1100) when the refrigerator detects water stored in the water tank (1100) for a predetermined period of time or longer through the water detection sensor (1500). In addition, according to one embodiment of the present disclosure, the refrigerator (1000) may provide a user with a notification that it has started discharging residual water when discharging water in the water tank (1100) to the evaporation tray (1801). The operation of the refrigerator (1000) providing a notification to empty the water tank or a notification that it has started discharging residual water will be described in detail with reference to FIGS. 13 to 16.

[0171] FIG. 13 is a flowchart illustrating a method of outputting a notification to empty a water tank (1100) or a notification to start discharging residual water according to one embodiment of the present disclosure.

[0172] In step S1310, the refrigerator (1000) according to one embodiment of the present disclosure can detect water stored in a water tank (1100) for a predetermined period of time or longer through a water detection sensor (1500).

[0173] According to one embodiment of the present disclosure, when a water detection sensor (1500) positioned at a position corresponding to the lower end of a water tank (1100) continuously detects water for a predetermined period of time (e.g., 30 hours) or longer, at least one processor (1600) of the refrigerator (1000) can determine that water has not been completely discharged from the water tank (1100) and has been stored for a long period of time (e.g., 30 hours or longer).

[0174] In step S1320, the refrigerator (1000) according to one embodiment of the present disclosure can determine whether a user's motion is detected for the refrigerator (1000) within a certain period of time (e.g., 6 hours) after detecting water stored in the water tank (1100) for a certain period of time or longer.

[0175] The user's actions may include, but are not limited to, actions such as opening the refrigerator door or freezer door, actions manipulating the user interface (e.g., touching the screen, setting the temperature, launching an application, entering a memo, etc.). The user's actions may also include an action of approaching the refrigerator (1000). For example, the refrigerator (1000) may use a human presence sensor to detect when a user approaches within a predetermined range of the refrigerator (1000).

[0176] In step S1330, the refrigerator (1000) according to one embodiment of the present disclosure may output a notification to empty the water tank (1100) when a user's motion toward the refrigerator (1000) is detected. For example, at least one processor (1600) of the refrigerator (1000) may display a notification to empty the water tank (1100) on a display or may output it audibly through a speaker.

[0177] Referring to FIG. 14, at least one processor (1600) of the refrigerator (1000) can detect water stored in a water tank for a predetermined period of time (e.g., 30 hours). In addition, at least one processor (1600) of the refrigerator (1000) can detect a user's action of opening the door of the refrigerator (1000) within a predetermined period of time (e.g., 2 hours) from the time when the processor detects water stored in the water tank (1100) for a predetermined period of time. At this time, at least one processor (1600) of the refrigerator (1000) can output a notification to empty the water tank (1100) because the water in the water tank (1100) is old through the output interface (1900) of the refrigerator (1000). For example, at least one processor (1600) of the refrigerator (1000) can output a notification message (1401) on the display that says, "Water has been stored for a long time. Please wash the water tank thoroughly before use."

[0178] According to one embodiment of the present disclosure, the refrigerator (1000) may output a notification to empty the water tank (1100) through a user terminal connected to the refrigerator (1000). In this case, the refrigerator (1000) may be indirectly connected to the user terminal through a server device, or may be directly connected to the user terminal through short-range communication.

[0179] According to one embodiment of the present disclosure, the server device may include a communication interface for communicating with an external device. The server device may communicate with a refrigerator (1000) or a user terminal through the communication interface. According to one embodiment of the present disclosure, the refrigerator (1000) may access the server device by transmitting identification information of the refrigerator (1000) or identification information of a user (e.g., login information, account information) to the server device and authenticating the identification information of the refrigerator (1000) or identification information of a user (e.g., login information, account information) from the server device.

[0180] According to one embodiment of the present disclosure, a server device may include an AI processor. The AI ​​processor can train an artificial neural network to create an artificial intelligence model. "Training" an artificial neural network can mean creating a mathematical model that allows the connections between neurons in the artificial neural network to make optimal decisions by appropriately adjusting weights based on data.

[0181] A user terminal according to one embodiment of the present disclosure may be a device connected to a server device and displaying information provided by the server device. According to one embodiment of the present disclosure, the user terminal may transmit and receive information with the server device through a specific application (e.g., a home appliance management application) installed on the user terminal.

[0182] According to one embodiment of the present disclosure, the user terminal may be a device connected to a server device with the same account information as the refrigerator (1000). The user terminal may be directly connected to the refrigerator (1000) through a short-range wireless communication channel, or may be indirectly connected to the refrigerator (1000) through the server device.

[0183] A user terminal according to an embodiment of the present disclosure may be implemented in various forms. For example, the user terminal described in the present disclosure may be, but is not limited to, a mobile terminal, a refrigerator including a display, a TV, a computer, an oven including a display, etc. In addition, the mobile terminal may be, but is not limited to, a smart phone, a laptop computer, a tablet PC, a digital camera, an e-book terminal, a digital broadcast terminal, a Personal Digital Assistant (PDA), a Portable Multimedia Player (PMP), a navigation device, an MP3 player, etc. For example, the mobile terminal may include a wearable device that can be worn by the user. For convenience of explanation, the following description will be given as an example where the user terminal is a smart phone.

[0184] According to one embodiment of the present disclosure, a user terminal (3000) can execute a specific application (e.g., a home appliance management application) provided by a server device (2000) based on user input. In this case, the user can check the operating status of the refrigerator (1000) (e.g., refrigerator temperature, freezer temperature), images inside the refrigerator, etc., through the application's execution window.

[0185] Referring to FIG. 15, at least one processor (1600) of a refrigerator (1000) can transmit information to a server device (2000) via a communication interface that water stored in a water tank (1100) has been detected for a predetermined period of time or longer, information that water has not been discharged from the water tank (1100) for a predetermined period of time or longer, information on the time period during which water is continuously detected in the water tank (1100), or information that the water tank (1100) must be emptied.

[0186] The server device (2000) may transmit a notification to the user terminal (3000) to empty the water tank (1100) based on information received from the refrigerator (1000). At this time, the user terminal (3000) may output a notification message (1501) through the application's execution window, saying, "Water has been stored for a long time. Please wash the water tank thoroughly before use." The user may check the notification message (1501) displayed in the application's execution window and recognize that the water in the water tank (1100) has been stored for a long time.

[0187] Returning to FIG. 13 again, in step S1340, the refrigerator (1000) according to one embodiment of the present disclosure can determine whether water stored in the water tank (1100) is detected for a predetermined period of time or longer from the time at which a notification to empty the water tank (1100) is output.

[0188] For example, if a notification to empty the water tank (1100) is output, but the user does not empty the water tank (1100), the water detection sensor (1500) can continue to detect water stored in the water tank (1100). On the other hand, the user can confirm the notification to empty the water tank (1100) and empty the water tank (1100). If the user empties the water tank (1100), the water detection sensor (1500) cannot detect water stored in the water tank (1100). If the user then fills the water tank (1100) with new water, the water detection sensor (1500) can detect water again.

[0189] According to one embodiment of the present disclosure, if the user does not empty the water tank (1100) and water is continuously detected by the water detection sensor (1500) even after outputting a notification to empty the water tank (1100), the at least one processor (1600) may perform step S1350. That is, the at least one processor (1600) may control the first pump (630) to discharge water stored in the water tank (1100) to the evaporation tray (1801). On the other hand, according to one embodiment of the present disclosure, if a signal indicating that water cannot be detected is received from the water detection sensor (1500) after outputting a notification to empty the water tank (1100), the at least one processor (1600) may determine that the user has emptied the water tank (1100).

[0190] In step S1350, the refrigerator (1000) according to one embodiment of the present disclosure may control the first pump (630) to discharge the water stored in the water tank (1100) to the evaporation tray (1801) if no user action is detected for the refrigerator (1000) within a predetermined time after detecting water stored in the water tank (1100) for a predetermined time or longer (No in S1320).

[0191] If the user's motion is not detected for a long period of time, even if the refrigerator (1000) outputs a notification to empty the water tank (1100), it may be difficult for the user to confirm the notification, and it may be difficult for the user to empty the water tank (1100). For example, the user may go on a trip for a week while filling the water tank (1100) with water. In this case, since the refrigerator (1000) cannot detect the user's motion within a given period of time, the notification to empty the water tank (1100) may not be output on the display of the refrigerator (1000), and the water stored in the water tank (1100) may be discharged to the evaporation tray (1801).

[0192] In step S1360, the refrigerator (1000) according to one embodiment of the present disclosure may output a notification indicating that discharge of residual water has begun when controlling the first pump (630) to discharge water stored in the water tank (1100) to the evaporation tray (1801).

[0193] According to one embodiment of the present disclosure, when at least one processor (1600) of a refrigerator (1000) controls a first pump (630) to discharge water stored in a water tank (1100) to an evaporation tray (1801), a notification message indicating that discharge of residual water has begun may be transmitted to a user terminal (3000) via a server device (2000). At this time, a notification message indicating that discharge of residual water has begun may be output from the user terminal (3000).

[0194] Referring to FIG. 16, the refrigerator (1000) can transmit information to the server device (2000) via a communication interface indicating that the discharge of residual water from the water tank (1100) has begun. The server device (2000) can transmit a notification indicating that the discharge of residual water has begun to the user terminal (3000) based on the information received from the refrigerator (1000). At this time, the user terminal (3000) can output a notification message (1601) stating "Residual water discharge is starting" through the execution window of the application. The user can confirm the notification message (1601) displayed in the execution window of the application and recognize that the residual water from the water tank (1100) is being discharged.

[0195] In steps S1370 and S1380, if the refrigerator (1000) according to one embodiment of the present disclosure detects a user's action while discharging water stored in the water tank (1100) to the evaporation tray (1801) (Yes in S1370), the operation of the first pump (630) can be stopped. Then, step S1330 can be performed.

[0196] For example, when at least one processor (1600) of the refrigerator (1000) detects a user's action on the refrigerator (1000) while discharging water stored in the water tank (1100) to the evaporation tray (1801), the processor may stop the operation of the first pump (630) and output a notification to empty the water tank (1100) through the output interface (1900) or the user terminal (3000).

[0197] Below, the operation of the refrigerator (1000) when the water tank (1100) is empty will be examined in detail with reference to FIG. 17.

[0198] FIG. 17 is a flowchart illustrating a method for disabling the operation of a pump for supplying water to a water supply system according to one embodiment of the present disclosure.

[0199] In step S1710, the refrigerator (1000) according to one embodiment of the present disclosure may receive a signal from the water detection sensor (1500) that no water is detected in the water tank (1100).

[0200] According to one embodiment of the present disclosure, the water detection sensor (1500) is positioned at a position corresponding to the lower end of the water tank (1100), so that when the water detection sensor (1500) does not detect water, the water tank (1100) may be free of water.

[0201] In step S1720, the refrigerator (1000) according to one embodiment of the present disclosure may operate the first pump (630) to discharge residual water in the water tank (1100) to the evaporation tray (1801) when receiving a signal from the water detection sensor (1500) that no water is detected in the water tank (1100).

[0202] According to one embodiment of the present disclosure, even if the water detection sensor (1500) does not detect water, a small amount of residual water may remain in the water tank (1100), and therefore, at least one processor (1600) may operate the first pump (630) for a predetermined period of time to completely empty the water tank (1100). When the first pump (630) is operated for a predetermined period of time to completely empty the water tank (1100), mold growth due to residual water or water stains on the water tank (1100) can be prevented.

[0203] In step S1730, the refrigerator (1000) according to one embodiment of the present disclosure may deactivate the operation of at least one pump (e.g., water pump (610), ice pump (620)) for supplying water to at least one water supply system (e.g., ice maker (1200), autofill device (1300), dispenser (1400)) when receiving a signal from a water detection sensor (1500) that water is not detected in the water tank (1100).

[0204] When the pump for supplying water to the water supply system operates when there is no water in the water tank (1100), the motor may rapidly heat up, shortening the life of the pump or causing damage, and increasing the operating noise of the pump. Therefore, according to one embodiment of the present disclosure, at least one processor (1600) may not operate the pump when there is no water in the water tank (1100), even if the user operates the lever of the dispenser (1400) or the automatic ice making function or autofill function is activated. In this case, the pump can be protected and the operating noise of the pump can be prevented from increasing.

[0205] In step S1740, the refrigerator (1000) according to one embodiment of the present disclosure may output a notification to replenish water in the water tank (1100) when a signal is received from the water detection sensor (1500) that water is not detected in the water tank (1100).

[0206] For example, at least one processor (1600) of the refrigerator (1000) may output a notification to replenish water in the water tank (1100) through at least one of a display, a speaker, or a user terminal (3000) connected to the server device (2000) when a signal is received from a water detection sensor (1500) that water is not detected in the water tank (1100).

[0207] Let us take a closer look at the operation of the refrigerator (1000) outputting a notification to refill water in the water tank (1100) with reference to FIG. 18.

[0208] FIG. 18 is a drawing for explaining an operation of outputting a notification to replenish water in a water tank (1100) according to one embodiment of the present disclosure.

[0209] Referring to FIG. 18, when at least one processor (1600) of the refrigerator (1000) receives a signal from the water detection sensor (1500) that no water is detected in the water tank (1100), a notification to replenish water in the water tank (1100) can be output through the output interface (1900) (e.g., display, speaker, etc.) of the refrigerator (1000).

[0210] According to one embodiment of the present disclosure, when a user attempts to use water in a water tank (1100), at least one processor (1600) of the refrigerator (1000) may output a notification to replenish water in the water tank (1100) through an output interface (1900). For example, when the at least one processor (1600) receives an input from the user to activate an automatic ice making function or an autofill function, or receives an input to press a lever of a dispenser (1400), the at least one processor (1600) may output a notification message (1810) saying "Check the water supply status" on a display or output an alarm sound through a speaker. The user may check the notification message (1810) and replenish water in the water tank (1100).

[0211] Meanwhile, at least one processor (1600) may monitor whether water is being replenished in the water tank (1100) if it does not receive an input from the user to use water in the water tank (1100) for a predetermined period of time (e.g., 12 hours) while the water tank (1100) is empty, and may output a notification message (1810) through the output interface (1900) after a predetermined period of time (e.g., 12 hours).

[0212] According to one embodiment of the present disclosure, a notification to replenish water in a water tank (1100) may be output from a user terminal (3000) connected to a refrigerator (1000) and a server device (2000). For example, when at least one processor (1600) of the refrigerator (1000) receives a signal from a water detection sensor (1500) indicating that no water is detected in the water tank (1100), the processor may transmit information to the server device (2000) indicating that the water tank (1100) is empty or that water needs to be refilled. At this time, the server device (2000) may output a notification to replenish water in the water tank (1100) through an application execution window installed in the user terminal (3000). For example, a notification message (1820) stating "Check the water supply status. When using the auto-fill water purifier function, periodic cleaning management of the water tank is required" may be displayed in the application execution window of the user terminal (3000). The user can confirm that the water tank (1100) is empty through the notification message (1820) and refill the water tank (1100). Accordingly, damage to the pump can be prevented by the pump operating while the water tank (1100) is empty.

[0213] FIG. 19 is a flowchart for explaining a method for outputting a notification when the temperature inside a refrigerator (1000) is higher than a reference temperature according to one embodiment of the present disclosure.

[0214] In step S1910, the refrigerator (1000) according to one embodiment of the present disclosure can determine whether water is detected in the water tank (1100) using the water detection sensor (1500). For example, at least one processor (1600) of the refrigerator (1000) can receive a signal indicating that water is detected or a signal indicating that water is not detected from the water detection sensor (1500) positioned at a position corresponding to the lowest end of the water tank (1100).

[0215] In step S1920, the refrigerator (1000) according to one embodiment of the present disclosure may perform step S1720 of FIG. 17 if water is not detected in the water tank (1100) (No in step S1910).

[0216] For example, at least one processor (1600) of the refrigerator (1000) may prevent noise from being generated by a pump (e.g., water pump, ice pump) that supplies water to a water supply system by deactivating the operation of the pump when a signal indicating that no water is detected is received from the water detection sensor (1500). In addition, at least one processor (1600) of the refrigerator (1000) may output a notification to replenish water in the water tank (1100) through a display, a speaker, or a user terminal (3000).

[0217] In step S1930, the refrigerator (1000) according to one embodiment of the present disclosure may determine whether the temperature of the refrigerator (1000) is equal to or higher than a reference temperature if water is detected in the water tank (1100) (Yes in S1910). For example, at least one processor (1600) of the refrigerator (1000) may determine, using at least one temperature sensor disposed in the refrigerator (1000), whether the temperature of the refrigerator compartment where the water tank (1100) is located is equal to or higher than a reference temperature. The reference temperature may be a temperature at which harmful substances such as mold may be generated. For example, the reference temperature may be 10°C, but is not limited thereto.

[0218] According to one embodiment of the present disclosure, the temperature of the refrigerator (1000) may rise above a reference temperature in abnormal situations such as a slightly opened door, a refrigerant leak, or a power outage. In this case, harmful substances such as mold may spread within the refrigerator (1000). Therefore, at least one processor (1600) may monitor whether the temperature of the refrigerator compartment rises above the reference temperature.

[0219] In step S1940, the refrigerator (1000) according to one embodiment of the present disclosure may output a notification to check the temperature inside the refrigerator (1000) or a notification to check the status of the water tank (1100) if the temperature of the refrigerator (1000) is higher than the reference temperature (Yes in S1930).

[0220] For example, at least one processor (1600) of a refrigerator (1000) can output a notification to check the temperature inside the refrigerator (1000) or a notification to check the status of a water tank (1100) through at least one of a display, a speaker, or a user terminal (3000) connected to a server device (2000) when the temperature inside the refrigerator (1000) is higher than a reference temperature.

[0221] According to one embodiment of the present disclosure, the refrigerator (1000) can continuously monitor whether the temperature of the refrigerator (1000) drops below a reference temperature after outputting a notification to check the temperature inside the refrigerator (1000) or a notification to check the status of the water tank (1100).

[0222] Since bacteria, which are common sources of contamination, do not grow (proliferate) at low temperatures below about 10 degrees and high temperatures above about 60 degrees, if the water tank (1100) and water supply system are controlled so that the temperature does not rise above about 10 degrees, the occurrence and spread of contamination can be minimized.

[0223] Meanwhile, according to one embodiment of the present disclosure, at least one processor (1600) may forcibly operate the compressor (1804) when the temperature inside the refrigerator (1000) is higher than a reference temperature to prevent contamination from spreading.

[0224] In step S1950, the refrigerator (1000) according to one embodiment of the present disclosure can determine whether water is detected in the water tank (1100) for a predetermined period of time or longer when the temperature of the refrigerator (1000) is lower than the reference temperature (No in S1930).

[0225] According to one embodiment of the present disclosure, at least one processor (1600) of the refrigerator (1000) can determine the time for which water is continuously detected by the water detection sensor (1500). For example, if water is continuously detected by the water detection sensor (1500) for 30 hours or more, at least one processor (1600) of the refrigerator (1000) can determine that water in the water tank (1100) has not been discharged for 30 hours or more.

[0226] In step S1960, the refrigerator (1000) according to one embodiment of the present disclosure can discharge water in the water tank (1100) to the evaporation tray (1801) if water is detected in the water tank (1100) for a predetermined period of time or longer (Yes in S1950).

[0227] According to one embodiment of the present disclosure, when water stored in a water tank (1100) is detected for a predetermined period of time or longer through a water detection sensor (1500), at least one processor (1600) of a refrigerator (1000) may control a first pump (630) to discharge the water stored in the water tank (1100) to an evaporation tray (1801) at the bottom of a condenser (1802) in a machine room (1800) using a discharge passage for defrost water. For example, at least one processor (1600) of the refrigerator (1000) may operate the first pump (630) to move water in the water tank (1100) to a drain surface (1710) at the bottom of an evaporator (1700) through a water tank hose (1110). Water discharged from the water tank (1100) to the drain surface (1710) through the water tank hose (1110) can flow into the drain pipe (1720) through the drain port (1711) of the drain surface (1710) and reach the evaporation tray (1801).

[0228] According to one embodiment of the present disclosure, when water in the water tank (1100) is not discharged for a long time, at least one processor (1600) may discharge the water in the water tank (1100) to an evaporation tray (1801) to allow natural evaporation to prevent contamination.

[0229] Below, the operation of the refrigerator (1000) outputting a notification to check the temperature inside the refrigerator (1000) or a notification to check the status of the water tank (1100) will be examined in more detail with reference to FIG. 20.

[0230] FIG. 20 is a drawing for explaining an operation of outputting a notification to check the temperature inside a refrigerator (1000) or a notification to check the status of a water tank (1100) according to one embodiment of the present disclosure.

[0231] Referring to FIG. 20, at least one processor (1600) can identify that the temperature of the refrigerator is 12°C using a temperature sensor. At this time, since the temperature of the refrigerator is higher than a reference temperature (e.g., 10°C), at least one processor (1600) can output a notification to check the temperature inside the refrigerator (1000) or a notification to check the status of the water tank (1100) through an output interface (1900) (e.g., a display, a speaker, etc.).

[0232] For example, at least one processor (1600) may output a notification message (2001) on the display, such as "Check the temperature of the refrigerator. Make sure the door is not opened. If the temperature of the refrigerator is high, bacteria may grow in the water tank. Please check the condition of the water tank.", or output an alarm sound through a speaker. The user may check the notification message (2001) and check the condition of the refrigerator (1000) or the water tank (1100), thereby preventing bacteria from growing inside the refrigerator (1000).

[0233] According to one embodiment of the present disclosure, a user terminal (3000) connected to a refrigerator (100) through a server device (2000) may output a notification to check the temperature inside the refrigerator (1000) or a notification to check the status of the water tank (1100). For example, if at least one processor (1600) of the refrigerator (1000) identifies that the temperature of the refrigerator compartment is higher than a reference temperature, it may transmit information to the server device (2000) that the temperature of the refrigerator compartment is higher than the reference temperature or information that the temperature of the refrigerator compartment needs to be checked. At this time, the server device (2000) may output a notification to check the temperature inside the refrigerator (1000) or a notification to check the status of the water tank (1100) through an application execution window installed on the user terminal (3000). For example, an application execution window of a user terminal (3000) may display a notification message (2002) that reads, "Please check the temperature of the refrigerator. If the temperature of the refrigerator is high, bacteria may grow in the water tank. Please check the condition of the water tank."

[0234] According to one embodiment of the present disclosure, a refrigerator (1000) can be provided that prevents (minimizes) contamination of a water supply system by discharging water in a water tank (1100) to an evaporation tray (1801) in a machine room (1800) using a discharge passage of a water tank (1100) when water in the water tank (1100) is left for a long period of time.

[0235] A refrigerator (1000) according to one embodiment of the present disclosure may include: a main body; a door installed to be rotatable or slidable on the front of the main body; at least one storage room in which items are stored; a water tank (1100) provided in the at least one storage room and storing water for supplying at least one water supply system; a water detection sensor (1500) for detecting water stored in the water tank (1100); and at least one processor (1600) for controlling a first pump (630) to discharge water stored in the water tank (1100) to an evaporation tray (1801) located below a condenser (1802) in a machine room (1800) using a defrost water discharge passage when water stored in the water tank (1100) is detected for a predetermined period of time or longer through the water detection sensor (1500). According to one embodiment of the present disclosure, by discharging stored water in a water tank (1100) to an evaporation tray (1801) for a predetermined period of time (e.g., 24 hours), the water tank (1100) can be prevented from being contaminated by residual water. In addition, since the water discharged to the evaporation tray (1801) is naturally evaporated, user convenience can be increased. Meanwhile, since the water stored in the water tank (1100) is discharged to the evaporation tray (1801) using the discharge path of the defrost water, the equipment can be substantially modified.

[0236] A water detection sensor (1500) according to one embodiment of the present disclosure may include at least one of a capacitive sensor, a weight detection sensor (1501), or a contact sensor.

[0237] According to one embodiment of the present disclosure, the lower portion of the water tank (1100) may be formed to have a spherical surface or an inclined surface. When the lower portion of the water tank (1100) has a spherical surface or an inclined surface, the remaining water in the water tank (1100) can be minimized, and even if the amount of remaining water is small, the amount of water remaining in the water tank (1100) can be detected. The water detection sensor (1500) according to one embodiment of the present disclosure may be positioned at a position corresponding to the lowest end among the lower portions of the water tank (1100). When the water detection sensor (1500) is positioned at a position corresponding to the lowest end of the water tank (1100), the water detection sensor (1500) can efficiently detect the remaining water in the water tank (1100).

[0238] According to one embodiment of the present disclosure, at least one processor (1600) can adjust the rotations per minute (RPM) of the blower fan (1803) within the machine room (1800) to the maximum level as water stored in the water tank (1100) is discharged to the evaporation tray (1801). In this case, the water discharged to the evaporation tray (1801) can be rapidly and naturally evaporated.

[0239] According to one embodiment of the present disclosure, a discharge passage of the water may include a drain pipe (1720) connected from a drain plate (1710) at the bottom of the evaporator (1700) to an evaporation tray (1801) in a machine room (1800).

[0240] According to one embodiment of the present disclosure, a water tank hose (1110) for discharging water from a water tank (1100) can be connected from the water tank (1100) to a drain surface (1710) at the bottom of an evaporator (1700). Water discharged from the water tank (1100) to the drain surface (1710) through the water tank hose (1110) can flow into a drain pipe (1720) through a drain port (1711) of the drain surface (1710) and reach an evaporation tray (1801).

[0241] At least one processor (1600) according to one embodiment of the present disclosure can determine the timing of discharging water stored in a water tank (1100) by considering the discharge operation cycle of the defrost water. At least one processor (1600) can prevent water from overflowing from an evaporation tray (1801) by determining the timing of discharging water stored in a water tank (1100) by considering the discharge operation cycle of the defrost water.

[0242] At least one processor (1600) according to one embodiment of the present disclosure can determine the amount of water that can be discharged from the water tank (1100) at one time based on the capacity of the evaporation tray (1801). The at least one processor (1600) can operate the first pump (630) for a time corresponding to the determined amount of water. By determining the amount of water that can be discharged at one time, the at least one processor (1600) can prevent water from overflowing from the evaporation tray (1801) when the water stored in the water tank (1100) is greater than the capacity of the evaporation tray (1801).

[0243] At least one processor (1600) according to one embodiment of the present disclosure can operate the first pump (630) multiple times at predetermined time intervals when the amount of water stored in the water tank (1100) exceeds a determined amount of water.

[0244] A water supply system according to one embodiment of the present disclosure may include at least one of an ice making device (1200), an autofill device (1300), or a dispenser (1400).

[0245] According to one embodiment of the present disclosure, at least one processor (1600) can determine whether at least one water supply system is capable of receiving water when water stored in the water tank (1100) is detected for a predetermined period of time or longer through the water detection sensor (1500). When at least one water supply system is capable of receiving water, the at least one processor (1600) can supply at least a portion of the water stored in the water tank (1100) to the at least one water supply system. After supplying at least a portion of the water stored in the water tank (1100) to the at least one water supply system, the at least one processor (1600) can control the first pump (630) to discharge the remaining water in the water tank (1100) to the evaporation tray (1801) in the machine room (1800) using the discharge passage of the defrost water. At least one processor (1600) can prevent water from being wasted by first supplying the residual water in the water tank (1100) to at least one water supply system before discharging it to the evaporation tray (1801) to allow natural evaporation.

[0246] At least one water supply system according to one embodiment of the present disclosure may include an ice maker (1200). At least one processor (1600) may determine that the ice maker (1200) is capable of receiving water when the ice height in the ice storage container (1201) included in the ice maker (1200) is below a threshold height, and may control the second pump (620) to supply at least a portion of the water stored in the water tank (1100) to the ice maker (1200). Freezing and storing water in the ice maker (1200) rather than storing water in the water tank (1100) for a long period of time may be advantageous in preventing contamination of the water.

[0247] A water supply system according to one embodiment of the present disclosure may include an autofill device (1300). At least one processor (1600) may determine that the autofill device (1300) is capable of receiving water when the height of water stored in the autofill water tank (1310) included in the autofill device (1300) is lower than a reference height, and may control the third pump (610) to supply at least a portion of the water stored in the water tank (1100) to the autofill device (1300). The autofill water tank (1310) of the autofill device (1300) is applied in a separate space and is an environment in which bacteria are less likely to proliferate than in the water tank (1100) due to the absence of external inflow contamination, so that water in the water tank (1100) can be transferred to the autofill device (1300).

[0248] According to one embodiment of the present disclosure, the reference height may correspond to the height of a water level sensor for detecting water stored in an autofill water tank (1310). At least one processor (1600) according to one embodiment of the present disclosure may control the third pump (610) to supply water to the autofill device (1300) until the water level sensor detects water.

[0249] At least one processor (1600) according to one embodiment of the present disclosure, when controlling the first pump (630) to discharge water stored in the water tank (1100) to the evaporation tray (1801), may transmit a notification message indicating that discharge of residual water has begun to the user terminal (3000) through the server device (2000). The user may recognize that water stored in the water tank (1100) for a long time is discharged through the notification message.

[0250] According to one embodiment of the present disclosure, at least one processor (1600) may, when a user's motion using the refrigerator (1000) is detected, stop the operation of the first pump (630) for discharging water stored in the water tank (1100) to the evaporation tray (1801). A notification to empty the water tank (1100) may be output through the display or speaker of the refrigerator (1000). Since the user can check the notification or directly empty the water tank (1100) when a user's motion is detected, at least one processor (1600) may output a notification to empty the water tank (1100) through the output interface (1900) of the refrigerator (1000).

[0251] According to one embodiment of the present disclosure, at least one processor (1600) may deactivate the operation of at least one pump for supplying water from the water tank (1100) to at least one water supply system when a signal is received from a water detection sensor (1500) disposed at a position corresponding to the lower end of the water tank (1100) that no water is detected in the water tank (1100). The at least one processor (1600) may deactivate the operation of the pump connected to the water supply system when there is no water in the water tank (1100), thereby preventing the pump from being damaged or generating noise.

[0252] According to one embodiment of the present disclosure, at least one processor (1600) may output a notification to replenish water in the water tank (1100) through at least one of a display, a speaker, or a user terminal (3000) connected to a server device (2000) when a signal indicating that no water is detected in the water tank (1100) is received from a water detection sensor (1500). The user may confirm the notification to replenish water and recognize that there is no water in the water tank (1100). If there is no water in the water tank (1100), the user may not operate the water supply system, and since the user may immediately replenish water in the water tank (1100), damage or noise may be prevented due to excessive operation of the pump when there is no water in the water tank (1100).

[0253] According to one embodiment of the present disclosure, at least one processor (1600) may operate the first pump (630) for a predetermined period of time to discharge residual water from the water tank (1100) when a signal is received from the water detection sensor (1500) that no water is detected in the water tank (1100). Even if no water is detected by the water detection sensor (1500), if a small amount of residual water remains in the water tank (1100), the water tank (1100) may become contaminated, and therefore, at least one processor (1600) may operate the first pump (630) for a predetermined period of time to discharge residual water.

[0254] According to one embodiment of the present disclosure, at least one processor (1600) may output a notification to check the temperature of the refrigerator (1000) or a notification to check the status of the water tank (1100) through at least one of a display, a speaker, or a user terminal (3000) connected to a server device (2000) when the temperature of the refrigerator (1000) is equal to or higher than a reference temperature. By providing a notification to the user when the temperature of the refrigerator (1000) is equal to or higher than a reference temperature, it is possible to prevent food inside the refrigerator (1000) from spoiling or water in the water tank (1100) from being contaminated.

[0255] A refrigerator (1000) according to one embodiment of the present disclosure may include: a main body; a door installed to be rotatable or slidable on the front of the main body; at least one storage room in which items are stored; a water tank (1100) provided in the at least one storage room and storing water for supplying at least one water supply system; a water detection sensor (1500) for detecting water stored in the water tank (1100); and at least one processor (1600) for outputting a notification to empty the water tank (1100) through at least one of a user device (3000) connected to a server device (2000), a display of the refrigerator (1000), or a speaker, when water stored in the water tank for a predetermined period of time or longer is detected by the water detection sensor (1500) and a user's motion using the refrigerator (1000) is detected.

[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] According to one embodiment, the method according to various embodiments disclosed in the present document may be provided as included in a computer program product. The computer program product may be traded as a commodity between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., a compact disc read-only memory (CD-ROM) or a Universal Serial Bus (USB) flash drive), or may be distributed online (e.g., downloaded or uploaded) through an application 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.

Claims

1. Main body; A door installed on the front of the main body so as to be rotatable or slidable; At least one storage room in which goods are stored; A water tank (1100) provided within at least one of the above storage rooms and storing water for supplying at least one water supply system; A water detection sensor (1500) that detects water stored in the water tank (1100); and A refrigerator (1000) including at least one processor (1600) that controls a first pump (630) to discharge water stored in the water tank (1100) to an evaporation tray (1801) at the bottom of a condenser (1802) in a machine room (1800) using a discharge passage for defrost water when water stored in the water tank (1100) is detected for a predetermined period of time through the water detection sensor (1500).

2. In the first paragraph, the lower part of the water tank (1100) is formed to be spherical or inclined so that the internal area of ​​the lower part of the water tank (1100) is smaller than the internal area of ​​other parts of the water tank (1100). The above water detection sensor (1500) is placed at a position corresponding to the lowest end among the lower parts of the water tank (1100), A refrigerator in which the water detection sensor (1500) includes at least one of a capacitance sensor, a weight detection sensor (1501), or a contact sensor.

3. In any one of the first and second paragraphs, the at least one processor (1600) A refrigerator in which the rotations per minute (RPM) of the blower fan (1803) in the machine room (1800) are adjusted to the maximum level as the water stored in the water tank (1100) is discharged to the evaporation tray (1801).

4. In any one of paragraphs 1 to 3, The discharge passage of the above-mentioned water includes a drain pipe (1720) connected from a drain plate (1710) at the bottom of the evaporator (1700) to an evaporation tray (1801) in the machine room (1800). A water tank hose (1110) for discharging water from the water tank (1100) is connected from the water tank (1100) to the drain surface (1710) at the bottom of the evaporator (1700). A refrigerator in which water discharged from the water tank (1100) to the drain surface (1710) through the water tank hose (1110) flows into the drain pipe (1720) through the drain port (1711) of the drain surface (1710) and reaches the evaporation tray (1801).

5. In any one of clauses 1 to 4, the at least one processor (1600) A refrigerator that determines the timing of discharging water stored in the water tank (1100) by considering the discharge operation cycle of the above-mentioned water.

6. In any one of clauses 1 to 5, at least one processor (1600) Based on the capacity of the above evaporation tray (1801), the amount of water that can be discharged at one time from the water tank (1100) is determined, Operate the first pump (630) for a time corresponding to the amount of water determined above, A refrigerator that operates the first pump (630) multiple times at predetermined time intervals when the amount of water stored in the water tank (1100) exceeds the determined amount of water.

7. In any one of paragraphs 1 to 6, the water supply system, A refrigerator comprising at least one of an ice maker (1200), an autofill device (1300), or a dispenser (1400).

8. In any one of clauses 1 to 7, the at least one processor (1600) When water stored in the water tank (1100) is detected for a predetermined period of time or longer through the water detection sensor (1500), it is determined whether at least one water supply system is capable of supplying water. If at least one of the above water supply systems is capable of receiving water, at least a portion of the water stored in the water tank (1100) is supplied to the at least one water supply system, A refrigerator in which, after supplying at least a portion of the water stored in the water tank (1100) to the at least one water supply system, if there is residual water in the water tank (1100), the first pump (630) is controlled to discharge the residual water in the water tank (1100) to the evaporation tray (1801) in the machine room (1800) using the discharge passage of the defrost water.

9. In paragraph 8, At least one of the above water supply systems comprises an ice making device (1200), At least one processor (1600) above, A refrigerator in which, when the ice height in the ice storage container (1201) included in the ice maker (1200) is below a critical height, the ice maker (1200) is determined to be in a state where water can be supplied, and the second pump (620) is controlled to supply at least a portion of the water stored in the water tank (1100) to the ice maker (1200).

10. In the 8th paragraph, the water supply system includes an autofill device (1300), At least one processor (1600) above, A refrigerator in which, when the water level stored in the autofill water tank (1310) included in the autofill device (1300) is lower than a reference level, the autofill device (1300) is determined to be in a state where water can be supplied, and the third pump (610) is controlled to supply at least a portion of the water stored in the water tank (1100) to the autofill device (1300).

11. In paragraph 10, The above reference height corresponds to the height of the water level sensor for detecting water stored in the autofill water tank (1310). A refrigerator wherein said at least one processor (1600) controls said third pump (610) to supply water to said autofill device (1300) until said water level sensor detects water.

12. In any one of clauses 1 to 11, the at least one processor (1600) A refrigerator that transmits a notification message to a user terminal (3000) via a server device (2000) to start discharging residual water when the first pump (630) is controlled to discharge water stored in the water tank (1100) to the evaporation tray (1801).

13. In any one of clauses 1 to 12, the at least one processor (1600) When the user's motion using the refrigerator (1000) is detected, the operation of the first pump (630) for discharging water stored in the water tank (1100) to the evaporation tray (1801) is stopped. A refrigerator that outputs a notification to empty the water tank (1100) through the display or speaker of the refrigerator (1000).

14. In any one of clauses 1 to 13, the at least one processor (1600) A refrigerator in which, when a signal is received from the water detection sensor (1500) disposed at a position corresponding to the lower end of the water tank (1100) that water is not detected in the water tank (1100), the operation of at least one pump for supplying water in the water tank (1100) to the at least one water supply system is deactivated, a notification to replenish water in the water tank (1100) is output through at least one of a display, a speaker, or a user terminal (3000) connected to a server device (2000), and the first pump (630) is operated for a predetermined period of time to discharge residual water in the water tank (1100).

15. In any one of claims 1 to 14, the at least one processor (1600) A refrigerator that outputs a notification to check the internal temperature of the refrigerator (1000) or a notification to check the status of the water tank (1100) through at least one of a display, a speaker, or a user terminal (3000) connected to a server device (2000) when the internal temperature of the refrigerator (1000) is higher than a reference temperature.

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