Refrigerator and method for controlling same

Abstract

A refrigerator according to an embodiment comprises: a cabinet provided with a storage chamber; a door opening / closing the storage chamber; and an ice-making assembly provided in the cabinet or the door, wherein the ice-making assembly comprises: a frame; a water container which is detachably installed to the frame; and an ice maker which makes ice by receiving water supplied from the water container, and comprises a first tray forming part of an ice-making cell in which the ice is formed, a second tray forming another part of the ice-making cell, and a driver which operates so that the second tray can move relative to the first tray.

Description

Refrigerator and its control method

[0001] This specification relates to a refrigerator and a method for controlling the same.

[0002] Typically, a refrigerator may include a cabinet having a storage compartment and a door for opening and closing the storage compartment.

[0003] The above storage room is surrounded by an insulating wall, and the interior of the storage room can be maintained at a temperature lower than the outside temperature. Depending on the temperature range of the storage room, the storage room may be referred to as a refrigerator or a freezer.

[0004] Typically, a refrigerator's freezer is equipped with an ice maker to produce ice. The ice maker collects water supplied from a water source or water tank in a tray, cools the water, and produces ice. The ice produced by the ice maker can be stored in an ice bin.

[0005] The ice stored in the ice bin can be discharged through a dispenser provided on the door, or the user can open the freezer door and access the ice bin to take out the ice from the ice bin.

[0006] A refrigerator is disclosed in Korean Patent Publication No. 10-2016-0136659, a prior art document.

[0007] A refrigerator of a prior art document comprises: a cabinet having a refrigerator compartment and a freezer compartment formed below the refrigerator compartment; a refrigerator compartment door, a pair of which are arranged on the left and right sides to open and close the refrigerator compartment, and an ice maker and a dispenser are provided on one side; a main water tank provided in the refrigerator compartment and cooling supplied water; a water purification device provided in the cabinet and purifying supplied water; a sub-water tank provided in the refrigerator compartment door and further cooling the supplied water; a water supply path connecting the water purification device, the main water tank, the sub-water tank, the dispenser, and the ice maker; and a branch valve provided on the water supply path of the refrigerator compartment door and allowing purified water to be selectively supplied to the dispenser or the ice maker.

[0008] However, in the case of the prior literature, since water is supplied from an external water source to the ice maker, there is a disadvantage in that a valve is required to control the flow of water.

[0009] Additionally, in situations where water is not supplied to the ice maker, such as when the ice bin where ice is stored is full or the valve is broken, there is a risk that the water may remain contaminated as it stagnates in the water supply line.

[0010] In the case of prior literature, the amount of water supplied can be controlled by using a valve to control the flow of water, but a technology for determining the completion of water supply in a state where the valve is omitted is not disclosed.

[0011] One embodiment provides a refrigerator capable of manually supplying water to an ice maker.

[0012] Alternatively or additionally, one embodiment provides a refrigerator and a control method thereof that determines whether normal water supply conditions are satisfied so that ice is formed in a desired shape or size.

[0013] Alternatively or additionally, one embodiment provides a refrigerator and a control method thereof capable of evenly distributing water to a plurality of ice-making cells.

[0014] A refrigerator according to one embodiment may include a cabinet forming a storage compartment. The refrigerator may further include a door for opening and closing the storage compartment.

[0015] The above refrigerator may further include an ice making assembly provided in the cabinet or door.

[0016] The above ice-making assembly may include a frame. The above ice-making assembly may further include a water tank for supplying water.

[0017] The above water tank can be detachably mounted on the frame.

[0018] The ice-making assembly may further include an ice maker for producing ice by receiving water supplied from the water tank. The ice maker may include a first tray forming a portion of an ice-making cell, which is a space where ice is formed. The ice maker may further include a second tray forming another portion of the ice-making cell.

[0019] The ice maker may further include a driving unit that operates to allow the second tray to move relative to the first tray.

[0020] The above ice-making assembly may further include a sensor provided in the ice maker and having an output value that varies depending on the amount of water supplied within the ice-making cell.

[0021] The refrigerator may further include a door open / close detection unit for detecting the opening / closing of the door. The refrigerator may further include a control unit.

[0022] The control unit can control ice making in the ice maker based on information detected by the door opening / closing detection unit and the sensor.

[0023] The above second tray is movable from the water supply position to the ice making position.

[0024] When the door opening / closing detection unit detects the door being closed at the water supply position of the second tray, the control unit can control the driving unit to move the second tray from the water supply position to the ice-making position after a first time has elapsed.

[0025] After the second tray is moved to the ice-making position, the control unit can determine whether normal water supply conditions are satisfied based on information detected by the sensor.

[0026] When the above normal water supply conditions are satisfied, the control unit can control the ice maker to perform an ice making process.

[0027] The above ice-making assembly may further include a heater for supplying heat to the ice-making cell.

[0028] The control unit can control the heater to operate during at least a portion of the ice-making process after the normal water supply condition is satisfied.

[0029] The above sensor may be a temperature sensor for detecting the temperature of water or ice in the ice-making cell. The control unit may determine that the normal water supply condition is satisfied if the change in temperature detected by the temperature sensor during the second time period is greater than a reference value.

[0030] The above sensor may be a capacitive sensor whose dielectric constant varies depending on the amount of water in the ice-making cell. The control unit may determine that the normal water supply condition is satisfied when the change in dielectric constant detected by the capacitive sensor during the second time period is greater than a reference value.

[0031] If the above normal water supply condition is not satisfied, the control unit can control the driving unit to move the second tray to the water supply position.

[0032] When the door opening / closing detection unit detects the opening of the door at the water supply position of the second tray, the control unit can control the driving unit to move the second tray from the water supply position to the ice-making position after a first time has elapsed.

[0033] When the door opening / closing detection unit detects that the door is closed at the ice-making position of the second tray, the control unit may control the driving unit to move the second tray to the water supply position. After the first time has elapsed, the control unit may control the driving unit to move the second tray from the water supply position back to the ice-making position.

[0034] A refrigerator according to another embodiment may include a cabinet having a storage compartment; a door for opening and closing the storage compartment; and an ice-making assembly provided in the cabinet or the door.

[0035] The above ice-making assembly may include a frame; a water tank detachably mounted on the frame; a detection unit for detecting mounting of the water tank; and an ice maker for receiving water supplied from the water tank and generating ice.

[0036] The ice maker may include a first tray forming a part of an ice cell, which is a space where ice is formed, and a second tray forming another part of the ice cell.

[0037] The ice maker may further include a driving unit that operates to allow the second tray to move relative to the first tray.

[0038] The above refrigerator may further include a door open / close detection unit for detecting the opening / closing of the door; and a control unit.

[0039] The control unit can control ice making in the ice maker based on the door opening / closing detection unit and information detected by the detection unit.

[0040] The control unit can control the ice maker to perform an ice-making process when a first time has elapsed since the installation of the water tank is detected by the detection unit.

[0041] The above second tray is movable from the water supply position to the ice making position.

[0042] In the water supply position of the second tray, when the door opening / closing detection unit detects the opening of the door and the detection unit detects the installation of the water tank, the control unit can control the driving unit to move the second tray from the water supply position to the ice-making position when a first time has elapsed since the detection unit detects the installation of the water tank.

[0043] When the door opening / closing detection unit detects that the door is closed at the ice-making position of the second tray, the control unit may control the driving unit to move the second tray to the water supply position. After the first time has elapsed, the control unit may control the driving unit to move the second tray from the water supply position back to the ice-making position.

[0044] After the second tray is moved to the ice-making position, the control unit can control the ice maker to perform an ice-making process.

[0045] When the installation of the water tank is detected by the detection unit at the water supply position of the second tray and the closing of the door is detected by the door open / close detection unit, the control unit can control the driving unit so that the second tray moves from the water supply position to the ice-making position after a first time has elapsed.

[0046] After the second tray is moved to the ice-making position, the control unit can control the ice maker to perform an ice-making process.

[0047] The above ice-making assembly may further include a heater for supplying heat to the ice-making cell. The control unit may control the heater to operate during at least a portion of the ice-making process.

[0048] According to another embodiment, a refrigerator may include a cabinet having a storage compartment; a door for opening and closing the storage compartment; and an ice-making assembly provided in the cabinet or the door.

[0049] The ice-making assembly may include a frame; a water tank detachably mounted on the frame; a detection unit for detecting mounting of the water tank; and an ice maker for generating ice by receiving water supplied from the water tank. The ice maker may include a first tray forming a part of an ice-making cell, which is a space where ice is formed, a second tray forming another part of the ice-making cell, and a driving unit for allowing the second tray to move relative to the first tray.

[0050] The above ice-making assembly may include a sensor provided in the ice maker and having an output value that varies depending on the amount of water supplied within the ice-making cell.

[0051] The above refrigerator may further include a control unit.

[0052] The control unit can control ice making in the ice maker based on information detected by the detection unit and the sensor.

[0053] The above second tray is movable from the water supply position to the ice making position.

[0054] In the water supply position of the second tray, when the door opening / closing detection unit detects the opening of the door and the detection unit detects the installation of the water tank, the control unit can control the driving unit to move the second tray from the water supply position to the ice-making position when a first time has elapsed since the detection unit detects the installation of the water tank.

[0055] After the second tray is moved to the ice-making position, the control unit can determine whether the normal water supply condition is satisfied based on the information detected by the sensor. If the normal water supply condition is satisfied, the control unit can control the ice maker to perform the ice-making process.

[0056] A method for controlling a refrigerator according to another embodiment relates to a method for controlling a refrigerator including an ice maker, the refrigerator comprising a first tray that receives water supplied from a water tank to produce ice and forms a part of an ice-making cell, which is a space where ice is formed, a second tray that forms another part of the ice-making cell, and a driving unit that operates to allow the second tray to move relative to the first tray.

[0057] The control method of the refrigerator may include a step of detecting the opening of a door; a step of determining whether a first time has elapsed after the opening of the door is detected; and a step of moving the second tray from a water supply position to an ice-making position after the first time has elapsed.

[0058] A method for controlling a refrigerator according to another embodiment may include: a step of detecting a door being closed; a step of determining whether a first time has elapsed after the door being closed is detected; and a step of moving the second tray from a water supply position to an ice-making position after the first time has elapsed.

[0059] The control method of the refrigerator may further include a step of determining whether a normal water supply condition is satisfied after the second tray is moved to the ice-making position.

[0060] The control method of the refrigerator may further include a step of causing the ice maker to perform an ice-making process when the above normal water supply condition is satisfied.

[0061] A method for controlling a refrigerator according to another embodiment may include a step of detecting the opening of a door; a step of determining whether the installation of the water tank has been detected; a step of determining whether a first time has elapsed after the installation of the water tank has been detected; and a step of performing an ice-making process by the ice maker after the first time has elapsed.

[0062] A method for controlling a refrigerator according to another embodiment may include a step of detecting the opening of a door; a step of determining whether the installation of the water tank has been detected; a step of determining whether a first time has elapsed after the installation of the water tank has been detected; and a step of performing an ice-making process by the ice maker after the first time has elapsed.

[0063] A method for controlling a refrigerator according to another embodiment may include a step of detecting the opening of a door; a step of determining whether the installation of the water tank has been detected; a step of determining whether the closing of the door has been detected after the installation of the water tank has been detected; a step of determining whether a first time period has elapsed after the closing of the door has been detected; and a step of performing an ice-making process in the ice maker after the first time period has elapsed.

[0064] A method for controlling a refrigerator according to another embodiment may include a step of detecting the opening of a door; a step of determining whether the installation of the water tank has been detected; a step of determining whether a first time has elapsed after the installation of the water tank has been detected; a step of determining whether a normal water supply condition has been satisfied after the first time has elapsed; and a step of performing an ice-making process in the ice maker when the normal water supply condition has been satisfied.

[0065] According to one embodiment, water can be manually supplied to the ice maker by removing the water tank, so there is no need for a valve or the like, and there is an advantage in that the water tank can be removed and washed.

[0066] In one embodiment, when it is determined whether normal water supply conditions are satisfied and ice making is started when normal water supply is present, there is an advantage in that ice can be formed in a required shape or size.

[0067] In one embodiment, when a water spreading process is performed in the ice maker after detecting the door closing, there is an advantage in that water can be evenly distributed to multiple ice cells.

[0068] Fig. 1 (a) is a perspective view of a refrigerator according to the first embodiment, and Fig. 1 (b) is a perspective view of another type of refrigerator.

[0069] Fig. 2 (a) is a perspective view of a freezer door according to the first embodiment, and Fig. 2 (b) is a side view of the freezer door according to the first embodiment.

[0070] Figure 3 (a) is a perspective view of the ice making assembly according to the first embodiment as viewed from one side, and Figure 3 (b) is a perspective view of the ice making assembly according to the first embodiment as viewed from the other side.

[0071] Figure 4 is an exploded perspective view of an ice making assembly according to the first embodiment.

[0072] Figure 5 is an exploded perspective view of an ice maker according to the first embodiment.

[0073] Figure 6 (a) is a perspective view of a water tank according to the first embodiment viewed from one side.

[0074] Fig. 6 (b) is a perspective view of the water tank according to the first embodiment as viewed from the other side.

[0075] Figure 7 is a cross-sectional view taken along line 7-7 of Figure 3 (a).

[0076] FIG. 8 is a drawing showing the first tray and the second tray at the ice-making position of the second tray according to the first embodiment.

[0077] Figure 9 is a control block diagram of a refrigerator according to the first embodiment.

[0078] Figure 10 is a flowchart for explaining a method for controlling a refrigerator according to the first embodiment.

[0079] Figure 11 is a drawing showing the ice maker at the ice making position of the second tray assembly.

[0080] Figure 12 is a drawing showing the ice maker at the water supply location of the second tray assembly.

[0081] Figure 13 is a flowchart for explaining a method for controlling a refrigerator according to the second embodiment.

[0082] FIG. 14 is a drawing showing a first frame equipped with a detection unit according to the third embodiment.

[0083] Fig. 15 is a drawing showing a state in which a water tank is mounted on a first frame according to the third embodiment.

[0084] Figure 16 is a flowchart for explaining a method for controlling a refrigerator according to the third embodiment.

[0085] Figure 17 is a flowchart for explaining a method for controlling a refrigerator according to the fourth embodiment.

[0086] Figure 18 is a flowchart for explaining a method for controlling a refrigerator according to the fifth embodiment.

[0087] FIG. 19 is a drawing showing a first frame equipped with a detection unit according to the sixth embodiment.

[0088] Figure 20 is a flowchart for explaining a method for controlling a refrigerator according to the seventh embodiment.

[0089] Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. When designating components in each drawing, it should be noted that, where possible, identical components will be given the same reference numerals, even if they appear in different drawings. Furthermore, when describing embodiments of the present invention, detailed descriptions of related known structures or functions will be omitted if they are deemed to hinder understanding of the embodiments of the present invention.

[0090] Additionally, in describing components of embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only intended to distinguish the components from other components, and the nature, order, or sequence of the components are not limited by the terms. When it is described that a component is "connected," "coupled," or "connected" to another component, it should be understood that the component may be directly connected, coupled, or connected to the other component, but another component may also be "connected," "coupled," or "connected" between each component.

[0091] Fig. 1(a) is a perspective view of a refrigerator according to the first embodiment, and Fig. 1(b) is a perspective view of another type of refrigerator. Fig. 2(a) is a perspective view of a freezer door according to the first embodiment, and Fig. 2(b) is a side view of the freezer door according to the first embodiment.

[0092] Referring to FIGS. 1 and 2, a refrigerator (1) according to one embodiment may include a cabinet (10) forming a storage compartment and a refrigerator door for opening and closing the storage compartment.

[0093] The storage compartment may include, for example, a refrigerator compartment (11) and a freezer compartment (12). Although not limited, the refrigerator compartment (11) may be located above the freezer compartment (12). Depending on the type of refrigerator, the freezer compartment (12) and the refrigerator compartment (11) may be arranged left and right, and the freezer compartment (12) may be located above the refrigerator compartment (11). Alternatively, the storage compartment may include only the freezer compartment (12).

[0094] The above refrigerator door may include a refrigerator door (20) for opening and closing the refrigerator compartment (11) and a freezer door (25) for opening and closing the freezer compartment (12).

[0095] The above refrigerator door (20) may be a single door or may include a pair of doors arranged left and right. Alternatively, at least one of the pair of doors may include a first door for opening and closing the refrigerator (11) and a second door rotatable relative to the first door.

[0096] The above freezer door (25) may be a single door or may include a pair of doors arranged left and right. The above freezer door (25) may open and close the freezer (12) in a sliding manner or in a rotating manner.

[0097] The above refrigerator (1) may further include an ice-making assembly (200) for generating ice. The ice-making assembly (200) may be provided in the storage compartment or on the refrigerator door.

[0098] As an example, FIG. 2 illustrates that the ice-making assembly (200) is installed on the freezer door (25). Alternatively, the ice-making assembly (200) may be installed on the refrigerator door (20) as shown in FIG. 1 (b). Alternatively, the ice-making assembly (200) may be installed on the refrigerator door (20) in addition to the freezer door (25).

[0099] The above freezer door (25) may include an outer case (101) and a door liner (102) connected to the outer case (101).

[0100] The space formed by the outer case (101) and the door liner (102) may be provided with an insulating material. Alternatively, the space formed by the outer case (101) and the door liner (102) may be a vacuum insulating space.

[0101] The above ice-making assembly (200) can be installed in the door liner (102). The door liner (102) forms a space (110) of a sunken shape, and at least a portion of the ice-making assembly (200) can be accommodated in the space (110).

[0102] One or more baskets (120) may be installed on the above freezer door (25). The baskets (120) may be installed on the door liner (102). The baskets (120) may be spaced apart from or arranged in the vertical direction with respect to the ice making assembly (200).

[0103] To allow a user to easily access the ice making assembly (200), the ice making assembly (200) may be installed on the upper side of the freezer door (25). The basket (120) may be positioned, for example, on the lower side of the ice making assembly (200).

[0104] Fig. 3(a) is a perspective view of the ice making assembly according to the first embodiment as viewed from one side, and Fig. 3(b) is a perspective view of the ice making assembly according to the first embodiment as viewed from the other side. Fig. 4 is an exploded perspective view of the ice making assembly according to the first embodiment. Fig. 5 is an exploded perspective view of the ice maker according to the first embodiment.

[0105] Referring to FIGS. 3 to 5, the ice making assembly (200) of the present embodiment may include an ice maker (230) that forms an ice making cell for generating ice.

[0106] The above ice making assembly (200) may further include a frame (400) that accommodates the ice maker (230). The frame (400) may be mounted on the door liner (102).

[0107] The ice making assembly (200) may further include a water tank (210) for supplying water to the ice maker (230). The water tank (210) may be detachably mounted on the frame (400). For example, when the frame (400) is mounted on the door liner (102), the water tank (210) may be detached from the frame (400).

[0108] When the water tank (210) is mounted on the frame (400), water discharged from the water tank (210) can be supplied to the ice maker (230). That is, in the present embodiment, a user can manually supply water to the ice maker (230).

[0109] The ice making assembly (200) may further include an ice bin (480) for storing ice produced by the ice maker (230). The ice bin (480) may be mounted on the door liner (102) or on the frame (400).

[0110] For example, while the frame (400) is mounted on the door liner (102), the ice bin (480) can be separated from the frame (400).

[0111] The above frame (400) may include a first frame (410) and a second frame (450) coupled to the first frame (410). Alternatively, the frame (400) may be formed as a single member.

[0112] The second frame (450) may be positioned on the lower side of the first frame (410) or may be coupled to the lower side.

[0113] The above water tank (210) can be mounted on the first frame (410), for example.

[0114] The ice maker (230) may be supported by the first frame (410) or by the second frame (450). The ice maker (230) may be directly supported by the frame (400) or may be supported by a bracket (240) that is a separate component from the ice maker (230). Alternatively, the bracket (240) may be a component of the ice maker (230).

[0115] Hereinafter, an example of the bracket (240) being supported on the second frame (450) will be described.

[0116] The above ice bin (480) can be mounted on the second frame (450), for example.

[0117] When the water tank (210) is mounted on the first frame (410), at least a portion of the water tank (210) can be exposed to the outside. Therefore, the user can easily check and access the water tank (210).

[0118] The water tank (210) can be mounted on the first frame (410) in a first direction. The ice bin (480) can be mounted on the second frame (450) in a second direction intersecting the first direction.

[0119] The ice making assembly (200) may further include a water supply guide (220) that guides water discharged from the water tank (210) to the ice maker (230). The water tank (210) may be positioned above the ice maker (230), and at least a portion of the water supply guide (220) may be positioned between the water tank (210) and the ice maker (230).

[0120] The above water supply guide (220) may include a cover (228) that covers at least a portion of the inner flow path.

[0121] The above ice maker (230) can form an ice-making cell (see 230a in FIG. 8), which is a space where ice is formed. The ice-making cell (230a) may be, for example, spherical or spherically shaped.

[0122] The ice maker (230) may include a first tray (250) forming a part of the ice making cell (230a). The ice maker (230) may include a second tray (260) forming another part of the ice making cell (230a).

[0123] The first tray (250) may include a first wall (252) forming a part of the ice-making cell (230a). The second tray (260) may include a second wall (262) forming another part of the ice-making cell (230a).

[0124] The second tray (260) is movable relative to the first tray (250). For example, the second tray (260) can rotate or move linearly.

[0125] Depending on the position or movement form of the second tray (260), the water supply position and ice making position of the second tray (250) may be different or the same.

[0126] The above first tray (250) may be connected to or supported by the bracket (240), for example.

[0127] The above first tray (250) may further include a guide (258). The guide (258) may guide the movement of the first pusher (380).

[0128] The ice maker (230) may further include a tray case that supports or contacts the second tray (260). The tray case may include a tray cover (270). The tray cover (270) may surround a portion of the second tray (260).

[0129] The above tray case may further include a tray supporter (280). The tray supporter (280) may support the second tray (260). The tray supporter (280) may be coupled with the tray cover (270). Accordingly, the tray cover (270) and the tray supporter (280) may move together with the second tray (260).

[0130] The second tray (260) can penetrate the tray cover (270). The tray supporter (280) can form a space that accommodates at least a portion of the second tray (260). For example, the second wall (262) can be accommodated in the space.

[0131] The above ice maker (230) may further include a driving unit (290) that operates to move the second tray (260).

[0132] The above driving unit (290) may be installed, for example, on the bracket (240). A shaft (310) may be connected to the driving unit (290). The shaft (310) may transmit the power of the driving unit (290) to the second tray (260). Alternatively, the power of the driving unit (290) may be transmitted to the shaft (310).

[0133] The ice maker (230) may further include an operating arm (330) connected to the shaft (310) or connected to the second tray (260). The operating arm (330) may move together with the second tray (260).

[0134] A spring (325) may be connected to the above-described operating arm (330). The spring (325) may provide elastic force to the second tray (260) in a direction in which the second tray (260) is brought into close contact with the first tray (250) at the ice-making position of the second tray (260).

[0135] The ice maker (230) may include a plurality of operating arms (330). One operating arm (330) may be connected to the driving unit (290) and the second tray (260). The other operating arm (330) may be connected to the second tray (260) on the opposite side of the first operating arm (330).

[0136] One side of the spring (325) can be connected to the operating arm (330) and the other side can be connected to the tray supporter (280).

[0137] The ice maker (230) may further include a first pusher (380) to separate ice from the ice-making cell (230a) during the ice-making process. The first pusher (380) may pressurize the first tray (250) or pass through the first tray (250) to pressurize the ice from the ice-making cell (230a).

[0138] The first pusher (380) may include a first bar (382). For example, a plurality of first bars (382) may extend from a body (384). The body (384) may be guided in movement by the guide (258).

[0139] The ice maker (230) may further include a second pusher (390) to separate ice from the ice making cell (230a) during the freezing process. The second pusher (390) may pressurize the second tray (260).

[0140] The second pusher (390) may include a second bar (392). The second pusher (390) may further include an installation portion (394). For example, a plurality of second bars (392) may extend from the installation portion (394).

[0141] The above installation part (394) can be installed on the bracket (240) or on the first frame (410) or the second frame (450).

[0142] The ice maker (230) may further include a transmission unit (320) for transmitting the moving force of the second tray (260) or the driving force of the driving unit (290) to the first pusher (380). One side of the transmission unit (320) may be connected to the body (384) of the first pusher (380). The other side of the transmission unit (320) may be connected to the tray supporter (280). The transmission unit (320) may be, for example, a link.

[0143] In this embodiment, the first pusher (380) may be a movable pusher, and the second pusher (390) may be a fixed pusher.

[0144] The above ice making assembly (200) may further include a restriction member (360) to restrict the water tank (210) from being separated from the frame (400).

[0145] The above restriction (360) can limit separation of the water tank (210) at least during the ice making process.

[0146] The above ice making assembly (200) may further include an actuator for transmitting the driving force of the driving unit (290) or the moving force of the second tray (260) to the limiting unit (360).

[0147] The above actuator may include an operating arm (330), a first operating part (340), and a second operating part (350).

[0148] The ice maker (230) may further include a full ice detection lever (300). The full ice detection lever (300) may detect the full ice in the ice bin (480). One side of the full ice detection lever (300) may be connected to the driving unit (290). The other side of the full ice detection lever (300) may be supported by the bracket (240). The full ice detection lever (300) may be rotated by the driving unit (290).

[0149] Fig. 6 (a) is a perspective view of a water tank according to the first embodiment as viewed from one side, and Fig. 6 (b) is a perspective view of a water tank according to the first embodiment as viewed from the other side. Fig. 7 is a cross-sectional view taken along line 7-7 of Fig. 3 (a).

[0150] Referring to FIGS. 6 and 7, the water tank (210) of the present embodiment can be mounted on the first frame (410).

[0151] The above first frame (410) may include a sunken receiving portion (411) in which the water tank (210) is received.

[0152] A through hole (413) may be formed at the bottom of the receiving portion (411). When the water tank (210) is received in the receiving portion (411), a portion of the water tank (210) may pass through the through hole (413). Alternatively, water discharged from the water tank (210) may pass through the through hole (413).

[0153] The water tank (210) may include a first body (211) that forms a space (211a) in which water is received. The water tank (210) may include a second body (216) that is coupled to the first body (211).

[0154] With reference to Fig. 7, the first body (211) may include a lower opening. The second body (216) may cover the lower opening.

[0155] The above second body (216) may include a plane or may be rounded to be convex downward.

[0156] The second body (216) may include a discharge hole (217) through which water is discharged. The discharge hole (217) may be located, for example, at the center of the second body (216). By turning over the first body (211) while separating the second body (216) from the first body (211), water may be accommodated in the space (211a). Alternatively, it is also possible to supply water to the space (211a) through the discharge hole (217) without separating the second body (216) from the first body (211).

[0157] The above space (211a) can accommodate water sufficient to make ice once in the ice maker (230). For example, the volume of the above space (211a) can be equal to or similar to the sum of the volumes of a plurality of ice-making cells (230a).

[0158] Accordingly, when ice making is performed once in the ice maker (230), since there is no water in the water tank (210), a phenomenon such as contamination of the water in the water tank (210) can be prevented.

[0159] The second body (216) may further include an air hole (218). Air may be introduced into the space (211a) through the air hole (218). Water in the space (211a) may be easily discharged through the discharge hole (217) due to the air present in the space (211a).

[0160] The second body (216) may be combined in a form that surrounds a portion of the lower side of the first body (211). A sealer (219) that prevents water leakage may be provided at the contact surface between the first body (211) and the second body (216). For example, a groove may be formed on the outer surface of the first body (211) in which the sealer (219) is seated. For example, a ring-shaped sealer (219) may be seated in the groove to surround the outer surface of the first body (211).

[0161] The water tank (210) may further include a handle (213). The handle (213) may extend horizontally from the first body (211).

[0162] At least a portion of the handle (213) may be rounded. For example, a portion of the handle (213) may be bent so as to be rounded downward.

[0163] The handle (213) may be provided with a coupling portion (214). When the restriction portion (360) is coupled to the coupling portion (214), separation of the water tank (210) may be restricted.

[0164] The above-mentioned connecting portion (214) may be provided at a position spaced apart from the end portion (213a) of the handle (213). The connecting portion (214) may extend downward from the lower surface of the handle (213).

[0165] The above-mentioned limiting member (360) may be movably installed on the first frame (410). For example, the limiting member (360) may be arranged to be rotatable or move up and down on the first frame (410).

[0166] The above-mentioned restriction (360) may further include a catch (363).

[0167] The above-described restriction (360) can move between a first position and a second position. When the water tank (210) is separated, the restriction (360) can be positioned at the first position (or release position). When the water tank (210) is mounted, the restriction (360) can move to the second position (restriction position). Fig. 7 illustrates the restriction (360) moving to the second position. In the second position of the restriction (360), the catch (363) can be engaged with the engaging portion (214) of the handle (213).

[0168] When the water tank (210) is mounted on the first frame (410), the user can hold the handle (213) and detach the water tank (210).

[0169] At the second position of the restriction (360), the restriction (360) may come into contact with the end (213a) of the handle (213). In this case, no space is formed between the handle (213) and the restriction (360) for the user's finger to be inserted, making it difficult for the user to grasp the handle (213). Accordingly, the separation of the water tank (210) may be restricted.

[0170] In addition, even when attempting to separate the water tank (210) using a tool or the like, the catch (363) is connected to the connecting portion (214) of the handle (213), so separation of the water tank (210) can be prevented.

[0171] The above-mentioned limiting member (360) may be positioned at the second position at the ice-making position of the second tray (360), for example. The above-mentioned limiting member (360) may be moved to the first position during the process in which the second tray (360) moves from the ice-making position to the ice-removing position.

[0172] FIG. 8 is a drawing showing the first tray and the second tray at the ice-making position of the second tray according to the first embodiment.

[0173] Referring to FIGS. 5 and 8, the first tray (250) can form a first cell (251) which is a part of the ice-making cell (230a). The second tray (260) can form a second cell (261) which is another part of the ice-making cell (230a).

[0174] The first wall (252) can form the first cell (251). The second wall (262) can form the second cell (261).

[0175] At the ice-making position of the second tray (260), the second wall (262) can come into contact with the first wall (261). In this state, a complete ice-making cell (230a) can be formed by the first cell (251) and the second cell (261).

[0176] The above ice maker (230) may further include a temperature sensor (540).

[0177] The temperature sensor (540) can detect the temperature of the first tray (250), for example. The temperature sensor (540) can be accommodated in a receiving portion formed in the first tray (250), for example. The temperature sensor (540) can detect the temperature of the water or ice in the ice-making cell (230a) by detecting the temperature of the first tray (250). Alternatively, the temperature sensor (540) can be exposed to the ice-making cell (230a) so that the temperature sensor (540) can directly detect the temperature of the water or ice in the ice-making cell (230a).

[0178] Figure 9 is a control block diagram of a refrigerator according to the first embodiment.

[0179] Referring to FIG. 9, the refrigerator of the present embodiment may include a cooler (550).

[0180] The above cooler (550) may include, for example, a compressor for compressing refrigerant. The temperature of the cold air supplied to the ice-making cell (230a) may vary depending on the output (or frequency) of the compressor.

[0181] Alternatively, the cooler (550) may include a fan for blowing air to the evaporator. The amount of cold air supplied to the ice-making cell (230a) may vary depending on the output (or rotation speed) of the fan.

[0182] Alternatively, the cooler (550) may include a refrigerant valve that controls the amount of refrigerant flowing through the refrigerant cycle.

[0183] The amount of refrigerant flowing in the refrigerant cycle can be varied by adjusting the opening of the refrigerant valve, and accordingly, the temperature of the cold air supplied to the ice-making cell (230a) can be varied.

[0184] In the present embodiment, the cooler (550) may include one or more of the compressor, fan, and refrigerant valve. Alternatively, the cooler (550) may include a thermoelectric element.

[0185] The refrigerator of the present embodiment may further include a control unit (500).

[0186] The above control unit (500) may be installed on or separated from the target for control. The control unit (500) may be located inside or outside the target for control.

[0187] For example, the control unit (500) may be provided in the cabinet (10), in the freezer door (25), or in the refrigerator door (20).

[0188] The refrigerator may include a door open / close detection unit (510) for detecting the opening / closing of the freezer door (25). The door open / close detection unit (510) may be provided on the freezer door (25) or on the cabinet (10).

[0189] As another example, when the ice making assembly (200) is provided in the refrigerator door (20), the door opening / closing detection unit (510) can detect the opening / closing of the refrigerator door (20), and can be provided in the refrigerator door (20) or the cabinet (10).

[0190] The above refrigerator may further include a temperature sensor (540) for detecting the temperature of water or ice in the ice-making cell (230a) as described above.

[0191] The above control unit (500) can determine whether the normal water supply condition is satisfied based on the temperature detected by the temperature sensor (540). The method for determining whether the normal water supply condition is satisfied will be described later.

[0192] The above control unit (500) can determine whether ice making is complete based on the temperature detected by the temperature sensor (540).

[0193] The above driving unit (290) may further include a position detection sensor (512) for detecting the position of the second tray (260). Alternatively, as a separate component from the driving unit (290), the position detection sensor (512) for detecting the position of the second tray (260) may be provided.

[0194] The above control unit (500) can control the driving unit (290) based on the position of the second tray (260) detected by the position detection sensor (512).

[0195] The refrigerator may further include a first heater (520). The first heater (520) may supply heat to the ice-making cell (230a) during the ice-making process. The first heater (520) may be in contact with the first tray (250) or in contact with the second tray (260). Alternatively, the first heater (520) may be adjacent to the first tray (250) or adjacent to the second tray (260).

[0196] The transparency of ice produced in the ice-making cell (230a) can be increased by the heat supplied by the first heater (520). In some cases, the first heater (520) may be omitted. In this case, it is possible to produce spherical ice with low transparency.

[0197] The above first heater (520) can also operate during the ice-making process after ice-making is completed.

[0198] The refrigerator may further include a second heater (530). The second heater (530) may supply heat to the ice-making cell (230a) during the ice-making process. Ice may be separated from at least one of the first tray (250) and the second tray (260) by the heat supplied by the second heater (530).

[0199] Fig. 10 is a flowchart illustrating a control method of a refrigerator according to the first embodiment. Fig. 11 is a drawing showing an ice maker at an ice-making position of a second tray assembly, and Fig. 12 is a drawing showing an ice maker at a water supply position of a second tray assembly.

[0200] Referring to FIGS. 4 to 12, the ice maker (230) may include a first tray assembly (231a) and a second tray assembly (231b).

[0201] The first tray assembly (231a) may include a first tray (250). The second tray assembly (231b) may include a second tray (260), a tray cover (270), and a tray supporter (280). In some cases, one or more of the tray cover (270) and the tray supporter (280) may be omitted.

[0202] The above control unit (500) can control the driving unit (290) so that the second tray assembly (231b) (or the second tray (260)) moves to the water supply position, ice-making position, and ice-breaking position.

[0203] After the ice is removed from the ice maker (230), the second tray (260) can be moved to the water supply position. The water supply process can be performed at the water supply position.

[0204] In general, in order to mount the water tank (210) on the ice making assembly (200), the freezer door (25) can be opened, and the water tank (210) can be mounted on the ice making assembly (200) while water is contained in the water tank (210).

[0205] After mounting the water tank (210) to the ice making assembly (200), the user can close the freezer door (25).

[0206] Accordingly, the opening and closing of the freezer door (25) can be detected at the water supply position of the second tray (260) (S1).

[0207] The position of the second tray (260) can be detected by the position detection sensor (512), and the opening and closing of the freezer door (25) can be detected by the door opening and closing detection unit (510).

[0208] The water tank (210) may be mounted on the ice-making assembly (200) with the discharge hole (217) positioned at the bottom. During the process of mounting the water tank (210), water in the water tank (210) may be discharged through the discharge hole (217). The water discharged through the discharge hole (217) may be supplied to the ice-making cell (230a) through the water supply guide (220).

[0209] The above ice maker (230) may include, for example, a plurality of ice-making cells (230a). The water supply guide (220) may, for example, guide water to one of the plurality of ice-making cells (230a).

[0210] When water is supplied to the above ice-making cell, the water may fall into one of the second cells (261) of the second tray (260) and then be distributed to the adjacent second cells (261). The water must be evenly distributed to each of the plurality of ice-making cells (230a) so that the size and shape of the ice produced when ice-making is completed can be uniform.

[0211] In this embodiment, the control unit (500) can determine whether a first time (or reference time) has elapsed after detecting the closing of the freezer door (25) (S2).

[0212] In the present embodiment, the first time may be the time required for water to be evenly distributed to each of the plurality of second cells (261).

[0213] If the control unit (500) determines that the first time has elapsed after detecting the closing of the freezer door (25), it can operate the driving unit (290) to move the second tray (260) to the ice-making position (S3).

[0214] When the second tray (260) is moved to the ice-making position, the first tray (250) and the second tray (260) can come into contact. In this state, a complete ice-making cell (230a) can be formed by the first cell (251) and the second cell (261). A portion of the water contained in the second tray (260) can be distributed to the first cell (251) of the first tray (250).

[0215] When the second tray (260) moves to the ice-making position, the operating arm (330) can move. As the operating arm (330) moves in the forward direction, the operating arm (330) can press the first operating part (340). Then, the first operating part (340) can rotate, and the second operating part (350) can rise by the rotation of the first operating part (340). When the second operating part (350) rises, the second operating part (350) can rotate the limiting part (360). That is, the limiting part (360) can move from the first position to the second position. Therefore, the engaging part (363) of the limiting part (360) can be coupled to the coupling part (214) of the handle (213). In this state, separation of the water tank (210) may be limited.

[0216] After the second tray (260) is moved to the ice-making position, the control unit (500) can determine whether normal water supply conditions are satisfied (S4).

[0217] If the above normal water supply condition is satisfied, it may be the case that the change in temperature detected by the temperature sensor (540) during the second time period is greater than the reference value. The change may be, for example, a temperature increase. The second time period may be different from the first time period. The second time period may be longer than the first time period.

[0218] The output value of the above temperature sensor (540) can vary depending on whether or not water is supplied to the ice making cell (230a) or the amount of water supplied.

[0219] In this embodiment, the water supplied to the water tank (210) may be at room temperature or may be lower or higher than room temperature.

[0220] When the water tank (210) is mounted on the ice-making assembly (200) with a water amount exceeding the standard amount contained in the water tank (210) and water is supplied to the ice-making cell (230a), the ice-making cell (230a) comes into contact with the water, so the temperature sensor (540) can detect the temperature of the water.

[0221] On the other hand, if the water tank (210) is not mounted on the ice-making assembly (200), the ice-making cell (230a) may come into contact with cold air or indoor air. In this case, the change in temperature detected by the temperature sensor (540) during the second time period is less than the reference value.

[0222] In addition, when the ice making assembly (200) is mounted in a state where the water tank (210) contains less water than the reference amount, a portion of the ice making cell (230a) may come into contact with water and another portion may come into contact with cold air or indoor air. In this case, too, the change in temperature detected by the temperature sensor (540) during the second period of time is less than the reference value.

[0223] If it is determined in step S4 that the above normal water supply condition is satisfied, the control unit (500) can start the ice making process (S5).

[0224] On the other hand, if it is determined that the above normal water supply condition is not satisfied, the control unit (500) can return to step S1 after operating the driving unit (290) to move the second tray (260) to the water supply position (S6).

[0225] After the above ice-making process starts, if the on condition of the first heater (520) is satisfied, the first heater (520) may be turned on. The on condition may be satisfied when the temperature detected by the temperature sensor (540) reaches the on reference temperature. The on reference temperature may be, for example, a temperature below zero. Alternatively, the first heater (520) may be turned on immediately when the above ice-making process starts.

[0226] While the ice making process is being performed, it can be determined whether ice making is complete based on at least one of the temperature value detected by the temperature sensor (540) and the ice making time.

[0227] Once ice making is complete, an ice-making process can be performed. The ice-making process can include a heating process in which the second heater (530) operates. When the second heater (530) is turned on, the heat of the second heater (530) can be transferred to the ice-making cell (230a).

[0228] The first heater (520) may be turned on during at least some of the sections in which the second heater (530) operates. Alternatively, the first heater (520) and the second heater (530) may operate alternately.

[0229] The ice may be separated from the first tray (250) by the heat of the second heater (530). The turning off of the second heater (530) may be determined based on at least one of the operating time of the second heater (530) and the temperature detected by the temperature sensor (540).

[0230] The above-described moving process may further include a moving process in which the second tray (260) moves. The moving process may be performed after the second heater (530) is turned off, or the moving process may be performed while the second heater (530) is operating, and the second heater (530) may be turned off during the moving process.

[0231] The second tray (260) can move forward from the ice-making position to the ice-making position. The second tray (260) can move backward from the ice-making position to the ice-making position.

[0232] In the above-mentioned ice-making process, the second tray (260) can move from the ice-making position toward the ice-making position.

[0233] During the above-mentioned moving process, the second tray (260) may be moved in the reverse direction by receiving power from the driving unit (290) to move the full ice detection lever (330).

[0234] The full ice detection lever (330) may remain stationary until the second tray (260) is rotated in the reverse direction by a certain angle from the ice-making position. The full ice detection lever (330) may be rotated when the second tray assembly (260) is rotated by more than the certain angle. At this time, the full ice detection lever (330) may be rotated in the reverse direction, which is the same direction as the rotation direction of the second tray (260).

[0235] When the second tray (260) is moved to the full ice detection position, the full ice detection lever (330) can also be moved to the full ice detection position.

[0236] If full ice is not detected while the second tray (260) is moved to the full ice detection position, the second tray (260) can be further moved in the reverse direction toward the ice detection position.

[0237] When the second tray (260) is additionally moved while the full ice detection lever (330) is moved to the full ice detection position, the full ice detection lever (330) can be moved in the forward direction and returned to the initial position.

[0238] Meanwhile, when the second tray (260) moves from the ice-making position to the ice-removing position, the operating arm (330) moves together, and the pressure applied to the first operating part (340) may decrease. Then, the second operating part (350) is lowered. Then, the force applied to the limiting part (360) is removed, and the limiting part (360) can return from the second position to the first position. When the limiting part (360) returns to the first position, the water tank (210) can be separated.

[0239] In the process of the second tray (260) moving from the ice-making position to the ice-removing position, the first bar (382) of the first pusher (380) can pressurize the ice in the ice-making cell (230a).

[0240] While the second tray (260) is being moved to the moving position, the second bar (392) of the second pusher (390) can press the second tray (260).

[0241] Ice separated from the second tray (260) can fall downward and be stored in the ice bin (480).

[0242] After the second tray (260) is moved to the ice position, it can be moved in the forward direction toward the water supply position.

[0243] As another example, the temperature sensor (540) may be replaced with a capacitance sensor. Alternatively, the ice maker (230) may further include a capacitance sensor.

[0244] The output value of the above electrostatic capacity sensor can vary depending on whether or not water is supplied to the ice-making cell (230a) or the amount of water supplied.

[0245] In this case, it is possible to determine whether the normal water supply conditions are satisfied based on the value detected by the electrostatic capacity sensor. The electrostatic capacity sensor may be installed, for example, in the first tray (250). The electrostatic capacity sensor may be exposed to the ice-making cell (230a).

[0246] For example, if the change in permittivity detected by the electrostatic capacitance sensor during the second time period is greater than the reference value, it may be determined that the normal water supply condition is satisfied. The change value may be, for example, an increase in permittivity.

[0247] Figure 13 is a flowchart for explaining a method for controlling a refrigerator according to the second embodiment.

[0248] Referring to FIG. 13, after ice removal is completed in the ice maker (230), the second tray (260) can be moved to the water supply position.

[0249] The opening of the freezer door (25) can be detected at the water supply position of the second tray (260) (S11).

[0250] The position of the second tray (260) can be detected by the position detection sensor (512), and the opening of the freezer door (25) can be detected by the door opening / closing detection unit (510).

[0251] The control unit (500) can determine whether the first time (or reference time) has elapsed after detecting the opening of the freezer door (25) (S12). In the present embodiment, the first time may be the time required for water to be evenly distributed to each of the plurality of second cells (261).

[0252] If the control unit (500) determines that the first time has elapsed after detecting the opening of the freezer door (25), it can operate the driving unit (290) to move the second tray (260) to the ice-making position (S13).

[0253] When the second tray (260) is moved to the ice-making position, the first tray (250) and the second tray (260) can come into contact. In this state, a complete ice-making cell (230a) can be formed by the first cell (251) and the second cell (261). When water is supplied to the second tray (260), a portion of the water supplied to the second tray (260) can be distributed to the first cell (251) of the first tray (250).

[0254] The control unit (500) can determine whether the closing of the freezer door (25) has been detected (S14). If the closing of the freezer door (25) has been detected, the control unit (500) can operate the driving unit (290) so that the second tray (260) moves to the water supply position (S15).

[0255] The control unit (500) can determine whether the first time has elapsed after the second tray (260) has moved to the water supply position (S16). As another example, the first time can be changed to a third time.

[0256] When it is determined that the first time has elapsed, the control unit (500) can operate the driving unit (290) to move the second tray (260) to the ice-making position (S17).

[0257] In general, the refrigerator may be placed on the floor so that the front of the refrigerator is higher than the back, so as to prevent the refrigerator from falling forward during the process of opening the refrigerator door or while the refrigerator door is open. In this state, when the freezer door (25) is opened, the height of each of the plurality of ice-making cells (230a) with respect to the floor may be different. When the water in the water tank (210) is supplied to the ice maker (230) while the freezer door (25) is open, the amount of water in the plurality of ice-making cells (230a) may not be uniform.

[0258] Accordingly, in this embodiment, when the closing of the freezer door (25) is detected, a water spreading process can be performed in the ice maker (230) so as to reduce the deviation in the amount of water in the plurality of ice-making cells (230a). When the freezer door (25) is closed, the height of each of the plurality of ice-making cells (230a) with respect to the floor surface can be substantially the same.

[0259] Therefore, when the water spreading process is performed with the freezer door (25) closed, the amount of water in the plurality of ice-making cells (230a) can be made uniform.

[0260] After the second tray (260) is moved to the ice-making position, the control unit (500) can determine whether normal water supply conditions are satisfied (S18).

[0261] The method for determining whether the normal water supply condition is satisfied is the same as that described in Fig. 10, so a detailed description will be omitted.

[0262] If it is determined in step S18 that the above normal water supply condition is satisfied, the control unit (500) can start the ice making process (S5).

[0263] On the other hand, if it is determined that the above normal water supply condition is not satisfied, the control unit (500) may operate the driving unit (290) to move the second tray (260) to the water supply position (S19), and then return to step S11.

[0264] Meanwhile, in step S12, the closing of the freezer door (25) may be detected before the first time is determined to have elapsed. In this case, after the first time has elapsed, steps S13, S15 to S18 may be performed sequentially.

[0265] As another example, in step S12, the closing of the freezer door (25) may be detected before the first time is determined to have elapsed. In this case, the process may proceed to step S16. That is, step S12 may be terminated, and step S16 may be performed.

[0266] Before the door closes, in step S12, if the door is detected to be closed before the first time period is determined to have elapsed, the count result in the counter for the elapsed time period may be reset. Thereafter, the control unit (500) may determine whether the first time period has elapsed since the door closed. Thereafter, steps S17 and S18 may be performed.

[0267] In the first or second embodiment, the control unit (500) may control ice making in the ice maker (230) based on information detected by the door opening / closing detection unit (510) and the sensor. In the present embodiment, the ice making process may refer to a process performed after the water supply process. After the ice making process is completed, an ice removal process may be performed.

[0268] For example, the control unit (500) can determine whether ice making has started (or whether normal water supply conditions are satisfied) based on whether the door is opened or closed and the temperature of the ice making cell (or tray) rises.

[0269] As another example, the control unit (500) may be understood to determine whether ice making begins (or whether normal water supply conditions are satisfied) based on whether the door is opened or closed and the dielectric constant of the electrostatic capacitance sensor.

[0270] In the case of the first embodiment or the second embodiment, it can be understood that it is determined whether ice making has started (or whether normal water supply conditions are satisfied) regardless of whether a water tank is actually installed.

[0271] FIG. 14 is a drawing showing a first frame equipped with a detection unit according to the third embodiment, and FIG. 15 is a drawing showing a state in which a water tank is mounted on the first frame according to the third embodiment.

[0272] This embodiment is otherwise identical to the first embodiment, except that it additionally includes a sensing unit for detecting the installation of a water tank. Therefore, only the distinctive features of this embodiment will be described below.

[0273] Referring to FIGS. 14 and 15, the ice-making assembly of the present embodiment may further include a detection unit (440) for detecting the installation of the water tank (210). The detection unit (440) may be, for example, a micro switch. Alternatively, the detection unit (440) may be a magnetic detection sensor that detects magnetic force.

[0274] When the water tank (210) is accommodated in the receiving portion (411), the water tank (210) may come into direct contact with the detection portion (440). Alternatively, the ice making assembly (200) may further include a movable portion (430) that is operated by the water tank (210) during the process of mounting the water tank (210). During the process of mounting the water tank (210), the movable portion (430) presses the detection portion (440) so that the mounting of the water tank (210) can be detected.

[0275] The sensing unit (440) may be installed in the first frame (410). The sensing unit (440) may be installed at a location spaced apart from the wall (411c) forming the receiving portion (411). The first frame (410) may include a fastening boss (429) to which the sensing unit (440) is fastened. For example, a fastening member may pass through the sensing unit (440) and be fastened to the fastening boss (429).

[0276] The above movable part (430) can be mounted on the first frame (410). At least a part of the movable part (430) can be positioned between the wall (411c) and the detection part (440).

[0277] The above movable part (430) can be movably installed on the first frame (410). For example, the above movable part (430) can be rotatably mounted on the first frame (410).

[0278] In a state where the water tank (210) is separated from the receiving portion (411), a part of the movable portion (430) may be positioned in the receiving portion (411). An opening (412a) may be formed in the wall (411c) for a part of the movable portion (430) to pass through.

[0279] When the water tank (210) is separated from the receiving portion (411), the movable portion (430) may include an inclined surface (431a). The inclined surface (431a) may be positioned on the receiving portion (411). During the process of mounting the water tank (210), the movable portion (430) may move from the initial position to the detection position.

[0280] When the water tank (210) is received in the receiving portion (411), if the water tank (210) presses the inclined surface (431a), the movable portion (430) rotates in one direction and moves to a detection position, and the detection portion (440) can be turned on. When the detection portion (440) is turned on, the mounting of the water tank (210) can be detected.

[0281] When the water tank (210) is separated, the movable part (430) can be rotated in the other direction and returned to the initial position. Then, the detection part (440) can be turned off.

[0282] Figure 16 is a flowchart for explaining a method for controlling a refrigerator according to the third embodiment.

[0283] Referring to FIG. 16, after ice removal is completed in the ice maker (230), the second tray (260) can be moved to the water supply position.

[0284] In general, in order to mount the water tank (210) on the ice making assembly (200), the freezer door (25) can be opened, and the water tank (210) can be mounted on the ice making assembly (200) while water is contained in the water tank (210).

[0285] After mounting the water tank (210) to the ice making assembly (200), the user can close the freezer door (25).

[0286] At the water supply position of the second tray (260), the opening of the freezer door (25) is detected, and the mounting of the water tank (210) can be detected by the detection unit (440) (S21).

[0287] The position of the second tray (260) can be detected by the position detection sensor (512), and the opening and closing of the freezer door (25) can be detected by the door opening and closing detection unit (510).

[0288] The above control unit can determine whether the first time (or reference time) has elapsed after detecting the installation of the water tank (210) (S22).

[0289] In the present embodiment, the first time may be equal to or greater than the time required for water to be completely discharged from the water tank (210).

[0290] The above first time may be the time required for water to be evenly distributed to each of the plurality of second cells (261).

[0291] If the control unit (500) determines that the first time has elapsed after detecting the installation of the water tank (210), it can operate the driving unit (290) to move the second tray (260) to the ice-making position (S23).

[0292] When the second tray (260) is moved to the ice-making position, the first tray (250) and the second tray (260) can come into contact. In this state, a complete ice-making cell (230a) can be formed by the first cell (251) and the second cell (261). A portion of the water contained in the second tray (260) can be distributed to the first cell (251) of the first tray (250).

[0293] After the second tray (260) is moved to the ice-making position, the control unit (500) can start the ice-making process (S5).

[0294] As another example, the ice-making position and the water supply position of the second tray (260) may be the same. In this case, a flow path may be formed in at least one of the first tray (250) and the second tray (260) to distribute the water supplied to one ice-making cell (230a) to the adjacent ice-making cell (230a). For example, the flow path may be formed by being sunken in at least one of the first tray (250) and the second tray (260).

[0295] In this case, step S23 in Fig. 16 may be omitted. In addition, the water supply position in step S21 may be an ice-making position.

[0296] Figure 17 is a flowchart for explaining a method for controlling a refrigerator according to the fourth embodiment.

[0297] Referring to FIG. 17, after ice removal is completed in the ice maker (230), the second tray (260) can be moved to the water supply position.

[0298] In general, in order to mount the water tank (210) on the ice making assembly (200), the freezer door (25) can be opened, and the water tank (210) can be mounted on the ice making assembly (200) while water is contained in the water tank (210).

[0299] After mounting the water tank (210) to the ice making assembly (200), the user can close the freezer door (25).

[0300] At the water supply position of the second tray (260), the opening of the freezer door (25) is detected, and the mounting of the water tank (210) can be detected by the detection unit (440) (S21).

[0301] The above control unit (500) can determine whether the closing of the freezer door (25) is detected after detecting the installation of the water tank (210) (S21A).

[0302] When the closing of the above freezer door (25) is detected, the control unit (500) can determine whether the first time (or reference time) has elapsed after detecting the installation of the water tank (210) (S22).

[0303] If the control unit (500) determines that the first time has elapsed after detecting the installation of the water tank (210), it can operate the driving unit (290) to move the second tray (260) to the ice-making position (S23).

[0304] After the second tray (260) is moved to the ice-making position, the control unit (500) can start the ice-making process (S5).

[0305] As another example, the ice-making position and water supply position of the second tray (260) may be the same. In this case, step S23 in FIG. 17 may be omitted. Additionally, the water supply position in step S21 may be the ice-making position.

[0306] Figure 18 is a flowchart for explaining a method for controlling a refrigerator according to the fifth embodiment.

[0307] Referring to FIG. 18, after ice removal is completed in the ice maker (230), the second tray (260) can be moved to the water supply position.

[0308] The opening of the freezer door (25) can be detected at the water supply position of the second tray (260) (S31).

[0309] After the opening of the above freezer door (25) is detected, the control unit (500) can determine whether the installation of the water tank (210) has been detected (S32).

[0310] After the installation of the water tank (210) is detected, the control unit (500) can determine whether the first time (or reference time) has elapsed (S33). In the present embodiment, the first time may be the time required for water to be evenly distributed to each of the plurality of second cells (261).

[0311] If the control unit (500) determines that the first time has elapsed after detecting the opening of the freezer door (25), it can operate the driving unit (290) to move the second tray (260) to the ice-making position (S34).

[0312] When the second tray (260) is moved to the ice-making position, the first tray (250) and the second tray (260) can come into contact. In this state, a complete ice-making cell (230a) can be formed by the first cell (251) and the second cell (261). When water is supplied to the second tray (260), a portion of the water supplied to the second tray (260) can be distributed to the first cell (251) of the first tray (250).

[0313] The control unit (500) can determine whether the closing of the freezer door (25) has been detected (S35). If the closing of the freezer door (25) has been detected, the control unit (500) can operate the driving unit (290) so that the second tray (260) moves to the water supply position (S36).

[0314] After the second tray (260) is moved to the water supply position, it can be determined whether the first time has elapsed (S37). As another example, the first time can be changed to a third time.

[0315] If it is determined that the first time has elapsed, the control unit (500) can operate the driving unit (290) to move the second tray (260) to the ice-making position (S37).

[0316] In the present embodiment, when the closing of the freezer door (25) is detected, a water spreading process may be performed in the ice maker (230) so as to reduce the deviation in the amount of water in the plurality of ice-making cells (230a). The reason for performing the water spreading process has been explained in the previous embodiment, so a detailed description will be omitted.

[0317] After the second tray (260) is moved to the ice-making position, the control unit (500) can start the ice-making process (S5).

[0318] In the fourth embodiment or the fifth embodiment, the control unit (500) can control ice making in the ice maker (230) based on information detected by the door opening / closing detection unit (510) and detection unit (440).

[0319] The above control unit (500) can determine whether to start ice making based on, for example, whether the water tank is installed and the time elapsed after the water tank is installed.

[0320] FIG. 19 is a drawing showing a first frame equipped with a detection unit according to the sixth embodiment.

[0321] This embodiment is otherwise identical to the third embodiment, with the difference being the type of sensing unit. Therefore, the distinctive features of this embodiment will be described below.

[0322] Referring to Fig. 19, the detection unit (441) of the present embodiment may be provided in the first frame (410). In the present embodiment, the detection unit (411) may be a non-contact sensor.

[0323] The above detection unit (441) may include a light emitting unit (442) and a light receiving unit (444).

[0324] The light irradiated from the light emitting portion (442) can pass through the receiving portion (411). When the water tank (210) is not received in the receiving portion (411), the light irradiated from the light emitting portion (442) can pass through the receiving portion (411) and reach the light receiving portion (444).

[0325] When the water tank (210) is accommodated in the receiving portion (411), the water tank (210) blocks the light irradiated from the light emitting portion (442), so that the light does not reach the light receiving portion (444).

[0326] A plurality of openings for light to pass through may be formed in the wall forming the above-mentioned receiving portion (411). The plurality of openings may include a first opening adjacent to the light-emitting portion (442) and a second opening adjacent to the light-receiving portion (444).

[0327] Figure 20 is a flowchart for explaining a method for controlling a refrigerator according to the seventh embodiment.

[0328] Referring to FIG. 20, after ice removal is completed in the ice maker (230), the second tray (260) can be moved to the water supply position.

[0329] In general, in order to mount the water tank (210) on the ice making assembly (200), the freezer door (20) can be opened, and the water tank (210) can be mounted on the ice making assembly (200) while water is contained in the water tank (210).

[0330] After mounting the water tank (210) to the genital ice making assembly (200), the user can close the freezer door (25).

[0331] At the water supply position of the second tray (260), the opening of the freezer door (25) is detected, and the mounting of the water tank (210) can be detected by the detection unit (440, 441) (S41).

[0332] The position of the second tray (260) can be detected by the position detection sensor (512), and the opening and closing of the freezer door (25) can be detected by the door opening and closing detection unit (510).

[0333] The above control unit can determine whether the first time (or reference time) has elapsed after detecting the installation of the water tank (210) (S42).

[0334] In the present embodiment, the first time may be the time required for water to be evenly distributed to each of the plurality of second cells (261).

[0335] If the control unit (500) determines that the first time has elapsed after detecting the installation of the water tank (210), it can operate the driving unit (290) to move the second tray (260) to the ice-making position (S43).

[0336] When the second tray (260) is moved to the ice-making position, the first tray (250) and the second tray (260) can come into contact. In this state, a complete ice-making cell (230a) can be formed by the first cell (251) and the second cell (261). A portion of the water contained in the second tray (260) can be distributed to the first cell (251) of the first tray (250).

[0337] After the second tray (260) is moved to the ice-making position, the control unit (500) can determine whether normal water supply conditions are satisfied (S44).

[0338] The method for determining whether the normal water supply condition is satisfied is the same as that described in Fig. 10, so a detailed description will be omitted.

[0339] If it is determined in step S44 that the above normal water supply condition is satisfied, the control unit (500) can start the ice making process (S5).

[0340] On the other hand, if it is determined that the above normal water supply condition is not satisfied, the control unit (500) can return to step S41 after operating the driving unit (290) to move the second tray (260) to the water supply position (S45).

[0341] In the present embodiment, it can be understood that whether ice making starts (or whether normal water supply conditions are satisfied) is determined based on whether the installation of a water tank is detected and the temperature rise of the ice making cell (or tray).

[0342] Meanwhile, in the above embodiments, the ice-making assembly is described as being installed in a door, but it should be noted that the control method performed by the limiting unit, detection unit, and control unit for limiting separation of the water tank can be applied equally even when the ice-making assembly is installed in a storage room.

Claims

1. Cabinet with storage space; A door for opening and closing the above storage room; and Including an ice making assembly provided in the above cabinet or door, The above ice making assembly, frame; a water tank detachably mounted on the above frame; and A refrigerator comprising an ice maker having a first tray that receives water supplied from the water tank, forms a part of an ice-making cell, which is a space where ice is formed, a second tray that forms another part of the ice-making cell, and a driving unit that operates to allow the second tray to move relative to the first tray.

2. In paragraph 1, A sensor provided in the above ice maker, the output value of which varies depending on the amount of water supplied within the ice cell; A door opening / closing detection unit for detecting the opening / closing of the above door; and Including more control units, A refrigerator in which the control unit controls ice making in the ice maker based on information detected by the door opening / closing detection unit and the sensor.

3. In paragraph 2, The above second tray can be moved from the water supply position to the ice making position, A refrigerator in which, when the door opening / closing detection unit detects the door being closed at the water supply position of the second tray, the control unit controls the driving unit so that the second tray moves from the water supply position to the ice-making position after a first time has elapsed.

4. In paragraph 3, After the second tray is moved to the ice making position, The control unit determines whether normal water supply conditions are satisfied based on information detected by the sensor, A refrigerator in which the control unit controls the ice maker to perform an ice-making process when the above normal water supply conditions are satisfied.

5. In paragraph 4, Further comprising a heater for supplying heat to the above ice making cell, A refrigerator in which the control unit controls the heater so that the heater operates during at least a portion of the ice-making process after the normal water supply condition is satisfied.

6. In paragraph 4, The above sensor is a temperature sensor for detecting the temperature of water or ice in the ice making cell, The above control unit is a refrigerator that determines that the normal water supply condition is satisfied when the change in temperature detected by the temperature sensor during the second time is greater than the reference value.

7. In paragraph 4, The above sensor is a capacitive sensor whose dielectric constant varies depending on the amount of water in the ice-making cell. A refrigerator in which the control unit determines that the normal water supply condition is satisfied when the change in dielectric constant detected by the electrostatic capacity sensor for the second time is greater than the reference value.

8. In paragraph 4, A refrigerator in which, if the above normal water supply condition is not satisfied, the control unit controls the driving unit to move the second tray to the water supply position.

9. In paragraph 2, The above second tray can be moved from the water supply position to the ice making position, A refrigerator in which, when the door opening / closing detection unit detects the opening of the door at the water supply position of the second tray, the control unit controls the driving unit so that the second tray moves from the water supply position to the ice-making position after a first time has elapsed.

10. In paragraph 9, At the ice making position of the second tray, When the door opening / closing detection unit detects the closing of the door, the control unit controls the driving unit so that the second tray moves to the water supply position. A refrigerator in which the control unit controls the driving unit so that the second tray moves from the water supply position back to the ice-making position after the first time has elapsed.

11. Cabinet with storage room; A door for opening and closing the above storage room; and Including an ice making assembly provided in the above cabinet or door, The above ice making assembly, frame; A water tank detachably mounted on the above frame; A sensing unit for detecting the installation of the water tank; and A refrigerator comprising an ice maker having a first tray that receives water supplied from the water tank, forms a part of an ice-making cell, which is a space where ice is formed, a second tray that forms another part of the ice-making cell, and a driving unit that operates to allow the second tray to move relative to the first tray.

12. In paragraph 11, A door opening / closing detection unit for detecting the opening / closing of the above door; and Including more control units, A refrigerator in which the control unit controls ice making in the ice maker based on the door opening / closing detection unit and information detected by the detection unit.

13. In paragraph 12, After the first time has elapsed since the installation of the water tank is detected by the above detection unit, A refrigerator in which the above control unit controls the ice maker to perform an ice-making process.

14. In paragraph 12, The above second tray can be moved from the water supply position to the ice making position, When the opening of the door is detected by the door opening / closing detection unit at the water supply position of the second tray, and the installation of the water tank is detected by the detection unit, A refrigerator in which the control unit controls the driving unit so that the second tray moves from the water supply position to the ice-making position when a first time has elapsed since the installation of the water tank is detected by the detection unit.

15. In paragraph 14, At the ice making position of the second tray, When the door opening / closing detection unit detects the closing of the door, the control unit controls the driving unit so that the second tray moves to the water supply position. A refrigerator in which the control unit controls the driving unit so that the second tray moves from the water supply position back to the ice-making position after the first time has elapsed.

16. In paragraph 15, A refrigerator in which the control unit controls the ice maker to perform an ice-making process after the second tray is moved to the ice-making position.

17. In paragraph 12, The above second tray can be moved from the water supply position to the ice making position, When the installation of the water tank is detected by the detection unit at the water supply position of the second tray and the closing of the door is detected by the door opening / closing detection unit, A refrigerator in which the control unit controls the driving unit so that the second tray moves from the water supply position to the ice-making position after the first time has elapsed.

18. In paragraph 17, A refrigerator in which the control unit controls the ice maker to perform an ice-making process after the second tray is moved to the ice-making position.

19. In paragraph 11, A sensor provided in the above ice maker, the output value of which varies depending on the amount of water supplied within the ice cell; Including a control unit, A refrigerator in which the control unit controls ice making in the ice maker based on information detected by the detection unit and the sensor.

20. In paragraph 19, The above second tray can be moved from the water supply position to the ice making position, When the opening of the door is detected by the door opening / closing detection unit at the water supply position of the second tray, and the installation of the water tank is detected by the detection unit, A refrigerator in which the control unit controls the driving unit so that the second tray moves from the water supply position to the ice-making position when a first time has elapsed since the installation of the water tank is detected by the detection unit.

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