refrigerator

Abstract

The present invention relates to a refrigerator. The refrigerator, according to an embodiment of the present invention, comprises: a tray having a tray wall including a plurality of cells; and a tray supporter that supports the tray wall. The tray includes a first extension wall extending from an upper end of the tray wall, wherein the first extension wall may be supported by the tray supporter.

Description

Technical Field

[0001] The present specification relates to an ice maker and / or a refrigerator equipped with an ice maker.Background Art

[0002] Generally, a refrigerator is a home appliance capable of storing food at low temperatures in an internal storage space shielded by a door. The refrigerator may cool the interior of the storage space by using cold, thereby storing the stored food in a refrigerated or frozen state. Typically, a refrigerator is provided with an ice maker for making ice.

[0003] The ice maker generates ice by receiving water supplied from a water source or a water tank into a tray and then cooling the water. In addition, the ice maker may release the ice from the ice tray using a heating method or a twisting method. An ice maker that automatically supplies water and releases ice in this manner is formed to open upward to scoop out the molded ice.

[0004] Ice produced in an ice maker of such a structure has at least one flat surface, such as a crescent shape or a cubic shape. Recently, attempts have also been made to manufacture transparent ice.Summary of the Invention Technical Problem

[0005] An object of an embodiment of the present invention is to provide an ice maker capable of manufacturing transparent ice using a single tray and / or a refrigerator equipped with the ice maker.

[0006] An object of an embodiment of the present invention is to provide an ice maker capable of manufacturing polyhedral-shaped ice and / or a refrigerator equipped with the ice maker.

[0007] An object of an embodiment of the present invention is to provide an ice maker capable of manufacturing separated ice pieces by providing a plurality of cells and / or a refrigerator equipped with the ice maker.

[0008] An object of an embodiment of the present invention is to provide an ice maker and / or a refrigerator equipped with the ice maker, in which water supply is performed by moving a tray during water supply, and the tray may return in a first direction (for example, a horizontal direction) after a water-spreading standby time has elapsed.

[0009] An object of an embodiment of the present invention is to provide an ice maker and / or a refrigerator equipped with the ice maker, in which a heater is provided at a lower portion of a tray for transparent ice making, and the heater is disposed at the lower outer periphery of the tray wall to form a downward freezing direction.

[0010] An object of an embodiment of the present invention is to provide a refrigerator in which the tray is moved to an ice-releasing position and ice releasing may be performed through tray deformation caused by interference with a fixed pusher.Technical Solution

[0011] A refrigerator according to an embodiment of the present invention includes a tray having a tray wall including a plurality of cells, and may include a tray supporter supporting the tray wall.

[0012] The tray may include a first extension wall extending from one end (for example, an upper end) of the tray wall, and the first extension wall may be supported by the tray supporter.

[0013] The tray may include a peripheral wall protruding from the first extension wall and extending along an edge of the cell.

[0014] The peripheral wall may include a second extension wall that guides the flow of water during water supply.

[0015] The second extension wall may include a portion of the peripheral wall that protrudes the most from the first extension wall.

[0016] The peripheral wall may include a third extension wall extending inclined from the second extension wall toward the first extension wall.

[0017] The peripheral wall may include a fourth extension wall extending horizontally from the third extension wall and extending along the edge of each cell.

[0018] The tray may include a partition wall partitioning a plurality of cells.

[0019] With respect to an end (for example, a lower end) of the tray wall, a height of the partition wall may be formed differently in a longitudinal direction of the cell.

[0020] The longitudinal direction may be understood as a direction from the fourth extension wall toward the second extension wall.

[0021] The partition wall may form one surface of each cell.

[0022] A heater driven to form transparent ice may be disposed outside the lower end of the tray wall.

[0023] A heater case supporting an end (for example, a lower end) of the tray and in which the heater is disposed may be included.

[0024] A tray supporter supporting at least a portion of the tray and forming a through-hole in which the tray is located may be included.

[0025] A partitioning part partitioning the through-hole into a plurality of spaces may be included, and each cell wall of the tray may be located in the plurality of spaces.

[0026] A temperature sensor for sensing the temperature of water or ice in the cell may be disposed in the partitioning part.

[0027] The temperature sensor may be located in a space between each cell.

[0028] The temperature sensor may be supported in a space between the heater case and the tray supporter.

[0029] A tray cover supported by at least a portion of the tray may be included.

[0030] The tray cover may be placed on the first extension wall of the tray and extend along the edges of a plurality of cells.

[0031] The refrigerator according to the present embodiment may include a single tray forming cells, and the single tray may include an open end through which the liquid substance or cold is supplied.

[0032] The single tray may include a tray wall forming the cells and an extension wall protruding from the tray wall to prevent the liquid substance from overflowing to the outside of the single tray when the liquid substance is supplied.

[0033] In the water-supply position of the tray, the single tray may rotate by a predetermined angle or move by a predetermined distance so that the extension wall may move in one direction (for example, downward).

[0034] The single tray may include a tray wall forming the cells, a first extension wall extending from an end of the tray wall toward the outside of the tray wall, and a peripheral wall protruding from the first extension wall and arranged to surround the cells.

[0035] The peripheral wall may include a second extension wall forming a guide surface that guides the flow of water and including a portion of the peripheral wall that protrudes the most from the first extension wall.

[0036] The peripheral wall may include a second extension wall extending inclined from the first extension wall and a third extension wall connected to the second extension wall and extending along at least a portion of the edge of the cell.

[0037] The single tray may include a plurality of cells and a partition wall separating the plurality of cells.

[0038] The partition wall may include a first wall part including a portion forming the highest position of the partition wall and a second wall part provided at a lower position than the first wall part and forming a position higher than the water level when water supply is completed.

[0039] The second wall part may form at least a portion of a channel through which water flows from one cell to another cell at the water-supply position.

[0040] The single tray may include a first cell surface forming a first surface (for example, a bottom surface) of the cell, a second cell surface forming a second surface (for example, a side surface) of the cell, and a third cell surface forming a third surface (for example, a front or rear surface) of the cell, so as to form polyhedral cells.

[0041] A tray supporter supporting the single tray may be included, and the tray supporter may form a through-hole formed by penetrating at least a portion of the tray supporter so that the single tray is positioned in the through hole.

[0042] The tray supporter may include a first wall forming an appearance and a second wall provided inside the first wall and supporting a cell wall defining the cell.

[0043] The cell may include a plurality of cells and may include a partitioning part dividing the through-hole into a plurality of mounting spaces so that the plurality of cells are positioned separately.

[0044] The tray supporter may include a protruding part protruding from the first wall, and the protruding part may include a coupling part connecting to a driving part for moving the single tray.

[0045] A tray cover forming an opening in which at least a portion of the single tray is positioned and on which the single tray is supported may be included, and the single tray may include an extension wall protruding from the opening.

[0046] A heater arranged adjacent to the single tray and a heater case to which the heater is coupled may be included.

[0047] The heater case may include an opening into which a cell is inserted and a heater groove formed around the opening, and the heater may be arranged in the heater groove to provide heat toward one side of the tray.

[0048] The single tray may include a first cell surface forming a bottom surface of the cell, a second cell surface forming a side surface of the cell, and a third cell surface forming a front or rear of the cell, so as to form polyhedral cells.

[0049] The tray may be arranged to be contactable with the first cell surface.

[0050] The cell may include a plurality of cells and a temperature sensor arranged in a space between the plurality of cells to sense the temperature of a liquid or solid substance present in the cell.

[0051] In another aspect of the present invention, a refrigerator may include a tray forming cells, a tray supporter supporting the tray, and a heater case coupled to the tray supporter and in which a heater for providing heat to the tray is arranged.

[0052] The cell may include a first cell surface, a second cell surface, and a third cell surface connected to each other to have a polyhedral shape, and the heater may be arranged on the first cell surface.

[0053] A tray cover supported by the tray may be included, and the tray, the tray supporter, and the tray cover may be fastened by a fastening member.Advantageous Effects of the Invention

[0054] According to an embodiment of the present invention, transparent ice may be easily manufactured using a single tray.

[0055] According to an embodiment of the present invention, polygonal-shaped ice may be easily manufactured.

[0056] According to an embodiment of the present invention, separated ice pieces may be easily manufactured by providing a plurality of cells.

[0057] According to an embodiment of the present invention, water supply may be performed by moving the tray during water supply, and the tray may easily return in a first direction (for example, a horizontal direction) after a water-spreading standby time has elapsed.

[0058] According to an embodiment of the present invention, a heater may be arranged at the outer periphery of a part (for example, the bottom) of the tray wall to form a freezing direction of ice in one direction (for example, downward).

[0059] According to an embodiment of the present invention, the tray may be moved at an ice-releasing position, and ice releasing may be easily performed through tray deformation due to interference with a fixed pusher.Brief Description of the Drawings

[0060] FIG. 1 is a view showing a refrigerator according to an embodiment of the present invention. FIG. 2 is an upper perspective view showing an ice maker according to an embodiment of the present invention. FIG. 3 is a front view of the ice maker of FIG. 2. FIG. 4 is a view showing some components of an ice maker according to an embodiment of the present invention. FIG. 5 is an exploded perspective view of an ice maker according to an embodiment of the present invention. FIG. 6 is a rear perspective view of a bracket according to an embodiment of the present invention. FIG. 7 is a front perspective view of a tray according to an embodiment of the present invention. FIG. 8 is a rear perspective view of a tray according to an embodiment of the present invention. FIG. 9 is a plan view of a tray according to an embodiment of the present invention. FIG. 10 is a cross-sectional view taken along line 10-10 of FIG. 8. FIG. 11 is a cross-sectional view showing a configuration of a cell wall of a tray according to an embodiment of the present invention. FIG. 12 is an upper perspective view of a tray supporter according to an embodiment of the present invention. FIG. 13 is a lower perspective view of a tray supporter according to an embodiment of the present invention. FIG. 14 is a view showing a state in which a temperature sensor is arranged on a tray according to an embodiment of the present invention. FIG. 15 is a perspective view showing a state in which a tray is supported by a tray supporter according to an embodiment of the present invention. FIG. 16 is a side view showing a state in which a tray is supported by a tray supporter according to an embodiment of the present invention. FIG. 17 is a partial perspective view showing a state in which a tray is supported by a tray supporter according to an embodiment of the present invention. FIG. 18 is a cross-sectional view taken along line 18-18 of FIG. 16. FIG. 19 is an upper perspective view showing a configuration of a tray cover according to an embodiment of the present invention. FIG. 20 is a bottom perspective view showing a configuration of a tray cover according to an embodiment of the present invention. FIG. 21 is a view showing configurations of a tray, a tray supporter, and a tray cover according to an embodiment of the present invention. FIG. 22 is a view showing some configurations of a tray, a tray supporter, and a tray cover according to an embodiment of the present invention. FIG. 23 is a cross-sectional view taken along line 23-23 of FIG. 21. FIG. 24 is a perspective view showing configurations of a heater case and a heater according to an embodiment of the present invention. FIG. 25 is a plan view showing configurations of a heater case and a heater according to an embodiment of the present invention. FIG. 26 is a cross-sectional view taken along line 26-26 of FIG. 24. FIG. 27 is a cross-sectional view taken along line 27-27 of FIG. 24. FIG. 28 is a view showing a state in which a heater is arranged at a lower end of a tray according to an embodiment of the present invention. FIG. 29 is a bottom perspective view showing some configurations of an ice maker according to an embodiment of the present invention. FIG. 30 is a bottom perspective view showing some configurations of the ice maker in a state in which a heater case is removed according to an embodiment of the present invention. FIG. 31 is a cross-sectional view taken along line 31-31 of FIG. 29. FIGS. 32a to 32e are views showing operating states of an ice maker according to an embodiment of the present invention. Detailed Description of the Invention

[0061] Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same numerals as much as possible even if they are displayed on different drawings. In addition, in describing an embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function interferes with an understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

[0062] In describing the components of the embodiment of the present invention, terms such as first, second, A, B, a, and b may be used. These terms are only for distinguishing the component from other components, and the essence, order, or sequence of the corresponding component is not limited by the term. When it is described that a component is "connected," "coupled," "supported," or "joined" to another component, the component may be directly "connected," "coupled," "supported," or "joined" to the other component, but it should be understood that another component may also be "connected," "coupled," "supported," or "joined" between each component.

[0063] Meanwhile, in describing the components of the embodiment of the present invention, the meaning of the description "at least one of components A and B" may be understood as including three embodiments meaning (1) A alone, (2) B alone, and (3) both A and B.

[0064] Also, in describing the components of the embodiment of the present invention, the meaning of the description "at least one of components A or B" may be understood as including three embodiments meaning (1) A alone, (2) B alone, and (3) both A and B. That is, the meaning of the description "at least one of components A or B" may be the same as the meaning of the description "at least one of components A and B."

[0065] The refrigerator according to an embodiment of the present invention may include a storage space where items (for example, food, medicine, etc.) are stored. The refrigerator may include a door for opening and closing the storage space. In the refrigerator, the items may be stored in a refrigerated or frozen state. The refrigerator may include an ice-making space in which at least a part of an ice maker to be described later is disposed. The ice-making space may be provided in the storage space and / or the door.

[0066] An ice maker according to an embodiment of the present invention may include a cell which is a space where the item (for example, water) undergoes a phase change into ice. The ice maker may include a tray assembly. The tray assembly may include a tray, a tray case, or both the tray and the tray case. The tray may include a wall forming at least a part of the cell. The tray case may include a wall connected to the tray, coupled to the tray, supported by the tray, or surrounding at least a part of the tray. The tray case may include at least one of a tray cover or a tray supporter. The tray assembly may include a first tray assembly and a second tray assembly. The first tray assembly may include a first tray, a first tray case, or both the first tray and the first tray case. The first tray may include a wall forming a first part of the cell. The first tray case may include a wall connected to the first tray, coupled to the first tray, supported by the first tray, or surrounding at least a part of the first tray. The first tray case may include at least one of a first tray cover or a first tray supporter. The second tray assembly may include a second tray, a second tray case, or both the second tray and the second tray case. The second tray may include a wall forming a second part of the cell. The second tray case may include a wall connected to the second tray, coupled to the second tray, supported by the second tray, or surrounding at least a part of the second tray. The second tray case may include at least one of a second tray cover or a second tray supporter. The ice maker may include a bracket. The bracket may cover at least a part of the tray assembly or accommodate at least a part of the tray assembly.

[0067] The ice maker and / or the refrigerator may include a pusher. The pusher may be provided to press the ice and / or the tray assembly so that the ice is separated from the tray assembly. The pusher may include a first edge on which a surface for pressing the ice and / or the tray assembly is formed. The pusher may include a bar extending from the first edge. The pusher may include a second edge located at an end of the bar.

[0068] A pressing part that the pusher presses may be formed on the tray assembly, and the pusher may be configured to apply pressure to one surface of the tray assembly. The pusher may be defined as a non-penetrating pusher.

[0069] The first edge of the pusher may move along a surface of a tray defining at least a part of the cell from a first point outside the cell. The pusher may be defined as a movable pusher. The pusher may be connected to a driving part, a rotation shaft of the driving part, or a tray assembly movable by being connected to the drive part.

[0070] The pusher may additionally press the pressing part after contacting the pressing part at the first point outside the cell. The pusher may be coupled to a fixed end. The pusher may be defined as a fixed pusher.

[0071] The ice maker and / or the refrigerator may include a heater. The heater (for example, a wire heater, a cord heater, a radiant heater, etc.) may supply heat to the cell and / or the storage space. The heater may contact the tray assembly and / or the cell to directly supply heat. The heater may supply heat indirectly (for example, hot or warm air) in a state where the heater is not connected to the tray assembly and / or the cell.

[0072] The ice maker and / or the refrigerator may include a cooler (for example, an evaporator, a refrigerant pipe, a refrigerant valve, a fan, a damper, a thermoelectric module, etc.). The cooler may contact the tray assembly and / or the cell to directly supply cold. The cooler may supply heat (for example, cold or cold air) indirectly in a state where the cooler is not connected to the tray assembly and / or the cell.

[0073] The ice maker and / or the refrigerator may include a temperature sensor. The temperature sensor may be provided to detect a temperature of an item (for example, water) or ice in the cell.

[0074] The ice maker and / or the refrigerator may include a driving device. The driving device may be connected to the tray assembly and / or the pusher.

[0075] The refrigerator of the present invention may include a tray assembly forming a part of a cell which is a space where water undergoes a phase change into ice, a cooler for supplying cold to the cell, a water supply part for supplying water to the cell, and a controller. The refrigerator may further include a driving part capable of moving the tray assembly. The refrigerator may further include a storage space in which food is stored in addition to the cell. The refrigerator may further include a cooler for supplying cold to the storage space. The refrigerator may further include a temperature sensor for sensing a temperature in the storage space. The controller may control at least one of the water supply part or the cooler. The controller may control at least one of the heater or the driving part.

[0076] After moving the tray assembly to an ice-making position, the controller may control the cooler to supply cold to the cell. After the generation of ice in the cell is completed, the controller may control the tray assembly to move in a forward direction to an ice-releasing position to take out the ice from the cell. After ice-releasing is completed, the controller may control the tray assembly to move in a reverse direction to a water supply position and then start water supply, and after the water supply is completed, the controller may control the tray assembly to move to the ice-making position.

[0077] In the present invention, the cell is located inside the storage space and may be defined as a space where water undergoes a phase change into ice. A circumference of the cell is independent of a shape of the cell and means an outer surface of the cell. In another aspect, an outer peripheral surface of the cell may mean an inner surface of a wall forming the cell. The center of the cell means the center of gravity or the volumetric center of the cell. The center may pass through the symmetry line of the cell.

[0078] In the present invention, a tray may be defined as a wall that partitions the cell and an interior of the storage space. The tray may be defined as a wall forming at least a part of the cell. The tray may be configured to surround all of the cells or only a portion of the cells.

[0079] In the present invention, a refrigerator may include at least one tray assembly configured to move by being connected to a driving part. The driving part is configured to move the tray assembly in at least one axial direction among X, Y, or Z axis or to rotate the tray assembly about at least one axis among X, Y, or Z axis. The present invention may include a refrigerator having the remaining components excluding the driving part and a power transmission member connecting the driving part and the tray assembly in the content described in the detailed description. In the present invention, the tray assembly may be moved in a first direction.

[0080] In the present invention, the refrigerator may include at least one tray assembly in which the heater is disposed. The heater may be disposed near the tray assembly to heat a cell formed by the tray assembly. The heater may include a heater (hereinafter referred to as a "transparent ice heater") controlled to be turned on during at least a part of a period while the cooler supplies cold so that bubbles dissolved in water inside the cell move from a portion where ice is generated toward water in a liquid state to generate transparent ice.

[0081] In the present invention, the cell may be cooled by the cooler that cools the storage space. For example, the storage space where the cell is located is a freezing space that may be controlled at a temperature lower than 0 degrees, and the cell may be cooled by a cooler that cools the freezing space.

[0082] In the present invention, the cell may be cooled by a cooler other than the cooler that cools the storage space. For example, the storage space where the cell is located is a refrigerating space that may be controlled at a temperature higher than 0 degrees, and the cell may be cooled by a cooler other than the cooler that cools the refrigerating space. That is, the refrigerator may include a refrigerating space and a freezing space, where the cell is located inside the refrigerating space and the cell may be cooled by a cooler that cools the freezing space. The cell may be located on a door that opens and closes the storage space.

[0083] In the present invention, the degree of deformation resistance represents the degree to which an object resists deformation caused by an external force applied to the object, and is defined as a value determined by the shape including the thickness of the object, the material of the object, and the like.

[0084] Meanwhile, from the viewpoint of the material of the object, a high degree of deformation resistance of the object may mean that the rigidity of the object is high. The thermal conductivity may be an inherent material characteristic of the object. Even when the material of the object is the same, the degree of deformation resistance may vary depending on the shape of the object or the like. The degree of deformation resistance may be affected by a deformation resistance reinforcement part extending in a direction in which the external force is applied. As the rigidity of the deformation resistance reinforcement part increases, the degree of deformation resistance may increase. As the height of the extended deformation resistance reinforcement part increases, the degree of deformation resistance may increase.

[0085] In the present invention, the degree of restoration represents the degree to which an object deformed by an external force is restored to the shape of the object before the external force was applied after the external force is removed, and is defined as a value determined by the shape including the thickness of the object, the material of the object, and the like.

[0086] Meanwhile, from the viewpoint of the material of the object, a high degree of restoration of the object may mean that the elastic modulus of the object is high. The elastic modulus may be an inherent material characteristic of the object. Even when the material of the object is the same, the degree of restoration may vary depending on the shape of the object or the like.

[0087] Hereinafter, specific embodiments of the refrigerator of the present invention will be described with reference to the drawings.

[0088] FIG. 1 is a view showing a refrigerator according to an embodiment of the present invention.

[0089] Referring to FIG. 1, a refrigerator according to an embodiment of the present invention may include a cabinet 14 including a storage space and a door for opening and closing the storage space.

[0090] The storage space may include a refrigerating space 18 and a freezing space 32. The refrigerating space 18 is disposed at an upper side, and the freezing space 32 is disposed at a lower side, so that each storage space may be individually opened and closed by each door. As another example, it is also possible that the freezing space is disposed at the upper side and the refrigerating space is disposed at the lower side. Alternatively, it is also possible that the freezing space is disposed on one of the left and right sides and the refrigerating space is disposed on the other side.

[0091] The freezing space 32 may be divided into first and second spaces (for example, a lower space and an upper space), and a drawer 40 that may be moved in and out of the first space may be provided in the first space.

[0092] The door may include a plurality of doors 10, 20 and 30 for opening and closing the refrigerating space 18 and the freezing space 32. The plurality of doors 10, 20 and 30 may include some or all of doors 10 and 20 that open and close the storage space and a door 30 that opens and closes the storage space in a sliding manner. The freezing space 32 may be provided to be separated into two spaces even if the freezing space 32 may be opened and closed by one door 30.

[0093] In this embodiment, the freezing space 32 may be referred to as a first storage space, and the refrigerating space 18 may be referred to as a second storage space. An ice maker 200 capable of manufacturing ice may be provided in the freezing space 32. The ice maker 200 may be located, for example, in a partial space (for example, an upper space) of the freezing space 32.

[0094] An ice bin 600 in which ice produced in the ice maker 200 drops and is stored may be disposed on one side (for example, a lower side) of the ice maker 200. A user may take the ice bin 600 out of the freezing space 32 and use the ice stored in the ice bin 600. The ice bin 600 may be coupled to one side (for example, an upper side) of a wall partitioning the first space (for example, an upper space) and the second space (for example, a lower space) of the freezing space 32.

[0095] Although not shown, the cabinet 14 is provided with a duct for supplying cold to the ice maker 200 (not shown). The duct guides cold heat-exchanged with refrigerant flowing through an evaporator toward the ice maker 200. For example, the duct is disposed at one side (for example, a rear side) of the cabinet 14 and may discharge cold toward the other side (for example, a front side) of the cabinet 14. The ice maker 200 may be located at one side (for example, a front side) of the duct. Without being limited, an outlet of the duct may be provided on one or more of a first side wall (for example, a rear side wall) and a second side wall (for example, an upper side wall) of the freezing space 32.

[0096] Although it has been described above that the ice maker 200 is provided in the freezing space 32, a space where the ice maker 200 may be located is not limited to the freezing space 32, and the ice maker 200 may be located in various spaces as long as cold may be supplied. Therefore, hereinafter, it will be described that the ice maker 200 is located in the storage space.

[0097] FIG. 2 is an upper perspective view showing an ice maker according to an embodiment of the present invention, FIG. 3 is a front view of the ice maker of FIG. 2, FIG. 4 is a view showing some components of the ice maker according to an embodiment of the present invention, FIG. 5 is an exploded perspective view of the ice maker according to an embodiment of the present invention, and FIG. 6 is a rear perspective view of a bracket according to an embodiment of the present invention.

[0098] Referring to FIGS. 2 to 6, an ice maker 200 according to an embodiment of the present invention may include a bracket 220 supporting a tray assembly. Each component of the ice maker 200 is provided inside or outside the bracket 220, so that the ice maker 200 may constitute a single assembly.

[0099] The bracket 220 may be coupled to at least one surface of the storage space.

[0100] The bracket 220 may include a first wall 221 in which a through-hole 220a is formed. At least a portion of the first wall 221 extends in a first direction (for example, a horizontal direction) and may be coupled to one surface of the storage space.

[0101] In the through-hole 220a, a tray 400 and tray cases 450 and 480 may be positioned.

[0102] A fastening hole 228 through which a fastening member passes may be formed on a corner side of the first wall 221. The bracket 220 may be coupled to the storage space through the fastening member coupled to the fastening hole 228.

[0103] The first wall 221 may include a guide protrusion 228a for guiding an electric wire connected to the ice maker. A plurality of guide protrusions 228a are provided and may be provided in various shapes according to an extension direction of the electric wire.

[0104] The bracket 220 may include two second walls 222 extending in one direction (for example, downward) from both sides of the first wall 221. A space between the two second walls 222 may form a space where the tray assembly is arranged.

[0105] A driving part 510 may be arranged inside one wall 222b of the two second walls 222. The driving part 510 may include a driving motor.

[0106] A cold hole 226a, through which cold that has passed through the ice maker is discharged, may be formed in the one wall 222b.

[0107] A switch hole 226b, in which a switch for inputting a command regarding turning on / off the ice maker is arranged, may be formed in the one wall 222b.

[0108] The other one 222a of the two second walls 222 may function as a prevention plate that prevents ice falling into the ice bin 600 or ice stored in the ice bin 600 from falling out.

[0109] The bracket 220 may include a third wall 223 protruding from the first wall 221. The third wall 223 may protrude from the first wall 221 in a direction toward the storage space. The third wall 223 may include a first part 223a extending in a direction corresponding to one direction (for example, a front-rear direction) of the storage space and a second part 223b extending in another direction (for example, a left-right direction) from one end (for example, a front end) of the first part 223a. The third wall 223 may include a hook 223c coupled to one surface (for example, an upper surface) of the storage space. For example, the hook 223c may be provided on the second part 223b.

[0110] A water supply part 248 may be provided in the second part 223b. The water supply part 248 may guide water supplied from the upper side to one side (for example, the lower side) of the water supply part 248. A water supply pipe (not shown) through which water is supplied may be arranged at the other side (for example, the upper side) of the water supply part 248.

[0111] Since the water supply part 248 is arranged below the water supply pipe, water is guided in one direction (for example, downward) without splashing to the water supply part 248, and even if the water moves in one direction (for example, downward) due to the lowered height, the amount of splashing water may be reduced.

[0112] The water supply part 248 may include a first water supply part 248a connected to the second part 223b of the third wall 223, and a second water supply part 248b having an inclined surface extending inclined in one direction (for example, downward) from the first water supply part 248a.

[0113] The water supply part 248 may include a third water supply part 248c extending to both sides of the second water supply part 248b to prevent the supplied water from splashing outward.

[0114] The two third water supply parts 248c extend in one direction (for example, backward) from the first water supply part 248a, and may be formed inclined so that the spaced distance between the two third water supply parts 248c decreases toward one direction (for example, backward).

[0115] In the bracket 220, a suction hole 224a, through which cold from the storage space flows toward the tray assembly, may be formed. The suction hole 224a may be formed in a side wall of the bracket 220.

[0116] For example, the suction hole 224a may be formed in a space between the second wall 222 and the third wall 223.

[0117] From another perspective, the suction hole 224a may be formed by penetrating at least a portion of the second wall 222.

[0118] The cold is sucked from the side of the bracket 220 toward the tray assembly through the suction hole 224a and may act as cold for ice-making.

[0119] The bracket 220 may include a blocking plate 227a that prevents the cold sucked through the suction hole 224a from being discharged from the bracket 220 instead of heading toward the tray assembly.

[0120] For example, the blocking plate 227a may extend in one direction (for example, upward) from the first wall 221. The blocking plate 227a is laterally spaced apart from the suction hole 224a, and a plurality of cells 411a may be arranged between the suction hole 224a and the blocking plate 227a.

[0121] The plurality of cells 411a may be arranged in one direction (for example, the X-axis direction).

[0122] An end (for example, an upper end) of the cell 411a may be open. That is, the cell 411a has an open end, and water supply may be performed through the open end.

[0123] The blocking plate 227a is arranged further from the suction hole 224a than the cell 411a farthest from the suction hole 224a, so it may prevent the cold from bypassing the plurality of cells 411a and being discharged from the bracket 220.

[0124] The bracket 220 may include a fourth wall 225 to which a pusher 540 is coupled. The fourth wall 225 extends in one direction (for example, downward) from one end (for example, a rear end) of the first wall 221 and may form a wall of one surface (for example, a rear surface) of the bracket 220.

[0125] The fourth wall 225 may include a guide protrusion 225a for guiding a wire connected to the ice maker. A plurality of guide protrusions 225a may be provided.

[0126] The ice maker 200 may include a tray assembly.

[0127] The tray assembly may include a tray 400, tray cases 450 and 480, or both the tray 400 and the tray cases 450 and 480.

[0128] The bracket 220 may define at least a portion of a space for accommodating the tray assembly.

[0129] The ice maker 200 may include a cell 411a, which is a space where water undergoes a phase change into ice by the cold. A plurality of cells 411a may be formed.

[0130] The tray 400 may form the cells 411a.

[0131] The tray 400 may be movably arranged. The tray 400 may perform linear motion or rotational motion.

[0132] When water is cooled by the cold in a state where water is supplied to the cell 411a, ice having the same or similar shape as the cell 411a may be generated. For example, the cell 411a may have a polyhedral or cube shape with an open top.

[0133] The tray 400 may be referred to as an "open-loop shape tray."

[0134] The tray case may include, for example, a tray cover 480 and a tray supporter 450. The tray cover 480 and the tray supporter 450 may be integrally formed or may be coupled after being manufactured as separate configurations.

[0135] In this embodiment, the tray cover 480 and the tray supporter 450 may be coupled after being manufactured as separate configurations. For example, the tray 400, the tray supporter 450, and the tray cover 480 may be coupled by a fastening member.

[0136] At least a portion of the tray cover 480 may be located at one side (for example, the upper side) of the tray 400.

[0137] The ice maker 200 may include a pusher 540. The pusher 540 may be coupled to the bracket 220, for example. The pusher 540 may be referred to as a "fixed pusher."

[0138] The pusher 540 may push out ice located in the cell 360 (referring here to cell 411a). For example, the pusher 540 may penetrate the tray supporter 450 to contact the tray 400 forming the cell 411a and may press the contacted tray 400.

[0139] The pusher 540 may include a coupling plate 542 coupled to the bracket 220 and at least one pushing bar 544 provided on the coupling plate 542. A plurality of pushing bars 544 may be connected to the coupling plate 542 while being spaced apart in a first direction (for example, a horizontal direction).

[0140] The number of pushing bars 544 may be the same as the number of cells 411a, but is not limited thereto.

[0141] The ice maker 200 may include a heater 490.

[0142] The heater 490 is arranged in the heater case 460 and may apply heat to the tray 400.

[0143] The heater 490 may be arranged adjacent to or in contact with an end (for example, a lower end) of the tray 400 to supply heat to a portion (for example, the lower part) of the tray 400.

[0144] The heater 490 may operate to help generate transparent ice during the ice-making process. The heater 490 may be referred to as a "transparent ice heater."

[0145] For example, the heater 490 may be a wire-type heater.

[0146] The heater case 460 is arranged at an end (for example, a lower end) of the tray supporter 450, and the heater 490 placed on one surface (for example, an upper surface) of the heater case 460 may be arranged at one end (for example, a lower end) side of the tray 400.

[0147] The ice maker 200 may include a driving part 510 providing driving force. The tray 400 may move by receiving the driving force from the driving part 510.

[0148] The driving part 510 may include a motor and a plurality of gears.

[0149] A full-ice sensing lever 470 may be connected to the driving part 510. The full-ice sensing lever 470 is moved by the power provided from the driving part 510 and may detect ice stored in the ice bin 600 during the moving process.

[0150] A lever connection part 515, to which the full-ice sensing lever 470 is connected, may be provided on a side of the driving part 510.

[0151] The driving part 510 may include a cam that is moved or rotated by receiving power from the motor. The ice maker 200 may include a sensor for detecting the movement or rotation of the cam.

[0152] For example, the cam is provided with a magnet, and the sensor may be a Hall sensor for detecting the magnetism of the magnet during the movement of the cam. Depending on whether the sensor detects the magnet, the sensor may output a first signal and a second signal, which are different outputs. One of the first signal and the second signal may be a High signal, and the other may be a Low signal.

[0153] A controller of the refrigerator may determine the position of the tray 400 (or the second tray assembly) based on the type and pattern of the signal output from the sensor. That is, since the tray 400 and the cam are moved by the motor, the position of the tray 400 may be indirectly determined based on the detection signal of the magnet provided on the cam.

[0154] For example, a water-supply position, an ice-making position, and an ice-releasing position may be distinguished and determined based on the signal output from the sensor.

[0155] The tray supporter 450 may include a protruding part 459 connected to the driving part 510. The protruding part 459 may be provided to protrude from one surface (for example, a side surface) of the tray supporter 450 toward the driving part 510.

[0156] FIG. 7 is a front perspective view of a tray according to an embodiment of the present invention, FIG. 8 is a rear perspective view of a tray according to an embodiment of the present invention, FIG. 9 is a plan view of a tray according to an embodiment of the present invention, FIG. 10 is a cross-sectional view taken along line 10-10 of FIG. 8, and FIG. 11 is a cross-sectional view showing a configuration of a cell wall of a tray according to an embodiment of the present invention.

[0157] Referring to FIGS. 7 to 11, a tray 400 according to an embodiment of the present invention may include a tray wall 410 forming the cell 411a.

[0158] The tray wall 410 may include a cell wall 411 defining an outer circumferential surface of each cell 411a. A plurality of cell walls 411 may be provided to correspond to the plurality of cells 411a.

[0159] In order to form separated ice, the cell walls 411 may be formed to be separated or spaced apart from each other in one direction (for example, the X-axis direction).

[0160] With respect to FIG. 7, the X-axis direction may be understood as a left-right direction, the Y-axis direction as a front-rear direction, and the Z-axis direction as an up-down direction.

[0161] The tray 400 may include a partition wall 413 for separating or partitioning the plurality of cells 411a. The partition wall 413 may be provided between two adjacent cells 411a.

[0162] The plurality of cell walls 411 may be separated by the partition wall 413.

[0163] The partition wall 413 may form one surface of each cell 411a.

[0164] A plurality of partition walls 413 may be provided spaced apart in one direction (for example, the X-axis direction).

[0165] With respect to an end (for example, a lower end) of the tray wall 410 or the cell wall 411, a height of the partition wall 413 may be formed differently in a longitudinal direction of the cell. The longitudinal direction may be understood as one direction (for example, the Y-axis direction).

[0166] The partition wall 413 may include a first wall part 413a including the highest portion of the partition wall 413.

[0167] The first wall part 413a may form a first height (H1) from the end (for example, a lower end) of the tray wall 410.

[0168] The first wall part 413a may be connected to a fourth extension wall 433.

[0169] The partition wall 413 may include a second wall part 413b formed at a lower height than the first wall part 413a. The second wall part 413b may extend from the first wall part 413a in a direction toward a second extension wall 431.

[0170] The second wall part 413b may form a passage through which water flows when water is spread from one cell 411a to another adjacent cell 411a during water supply.

[0171] The height of the second wall part 413b may form a second height (H2) lower than the first height (H1). Since the second wall part 413b has a relatively low height, the flow of water (water spreading) between the cells 411a may be smoothly performed.

[0172] The partition wall 413 may include a third wall part 413c connecting the first wall part 413a and the second wall part 413b.

[0173] The third wall part 413c may extend inclined from the first wall part 413a toward the second wall part 413b.

[0174] The partition wall 413 may include a fourth wall part 413d extending from the second wall part 413b and connected to the tray wall 410.

[0175] A thickness of the fourth wall part 413d in one direction (for example, the X-axis direction) may be greater than a thickness of the first wall part 413a or the second wall part 413b in one direction (for example, the X-axis direction). The strength of the partition wall 413 may be reinforced by the configuration of the fourth wall part 413d.

[0176] Since the fourth wall part 413d includes a portion where the thickness increases, a desired polyhedral shape may be easily configured.

[0177] The tray 400 may include a first extension wall 420 extending in a first direction (for example, a horizontal direction) from an upper end of the tray wall 410. The first extension wall 420 may extend in the first direction (for example, a horizontal direction) around a circumference of one (for example, upper) end of the tray wall 410.

[0178] The first extension wall 420 may include a wall body 421. The wall body 421 is provided at the edges of the plurality of cells 411a and may protrude in the first direction (for example, a horizontal direction) from the edges of the plurality of cells 411a.

[0179] The tray 400 may include coupling holes 423 and 424 for coupling with the tray supporter 450 or the tray cover 480.

[0180] The coupling holes 423 and 424 may include a first coupling hole 423 coupled with the tray supporter 450. A protrusion 457 of the tray supporter 450 may be inserted into the first coupling hole 423.

[0181] The first coupling hole 423 may be aligned in one direction (for example, an up-down direction) with a cover hole 483 of the tray cover 480.

[0182] A plurality of first coupling holes 423 may be formed.

[0183] The coupling holes 423 and 424 may include a second coupling hole 424 coupled with the tray cover 480. A protrusion 484 of the tray cover 480 may be inserted into the second coupling hole 424.

[0184] The tray 400 may include a peripheral wall 430 surrounding the plurality of cells 411a. The peripheral wall 430 may protrude in one direction (for example, upward) from the first extension wall 420.

[0185] The peripheral wall 430 may extend along a circumference of the end (for example, an upper end) of the tray wall 410. For example, the peripheral wall 430 may be integrally formed with the tray wall 410 and extend upward from the end (for example, an upper end) of the tray wall 410.

[0186] An inner space of the peripheral wall 430 may form a flow space for fluid when water supply is performed from the water supply part 248.

[0187] The peripheral wall 430 may include a second extension wall 431 protruding in one direction (for example, upward) from the first extension wall 420. The second extension wall 431 may include a portion of the peripheral wall 430 that protrudes the most from the first extension wall 420.

[0188] At the water-supply position, the tray 400 is in a state moved in a forward direction by a predetermined angle, and in order to prevent water from overflowing to the outside of the tray 400 when water supply is performed at this position, the second extension wall 431 may extend from the first extension wall 420 to a relatively high position.

[0189] The second extension wall 431 may be arranged at a position adjacent to one end of the tray 400 that moves in one direction (for example, downward) when the tray 400 is moved at the water-supply position.

[0190] Due to the height of the second extension wall 431, even if the one end of the tray 400 moves in one direction (for example, downward), an end (for example, an upper end) of the second extension wall 431 may be at a position higher than the level of the water surface.

[0191] The second extension wall 431 may guide the movement of water when water is spread from one cell 411a to another adjacent cell 411a. That is, an inner surface of the second extension wall 431 may form a guide surface for water.

[0192] The second extension wall 431 may form at least a portion of a flow path (channel) for the fluid supplied to the cells 411a.

[0193] The second extension wall 431 may be provided on a side of the cell wall 411 to which the third wall part 413c of the partition wall 413 is connected.

[0194] The peripheral wall 430 may include a third extension wall 432 extending in one direction (for example, the Y-axis direction) by being curved or bent at both sides of the second extension wall 431.

[0195] The third extension wall 432 may protrude in one direction (for example, upward) from the first extension wall 420.

[0196] The third extension wall 432 may extend inclined in a direction in which the height of the wall decreases.

[0197] The third extension wall 432 may form at least a portion of a flow path (channel) for the fluid supplied to the cell 411a.

[0198] The second extension wall 431 and the third extension wall 432 may have a bent or curved wall shape (U-shape).

[0199] The peripheral wall 430 may include a fourth extension wall 433 connected to the third extension wall 432 and forming at least a portion of the edge of the cell 411a.

[0200] A portion of the fourth extension wall 433 and the second extension wall 431 may be arranged opposite each other with respect to the cell 411a.

[0201] The fourth extension wall 433 may protrude in one direction (for example, upward) from the first extension wall 420.

[0202] The height to which the second extension wall 431 protrudes in one direction (for example, upward) from the first extension wall 420 may be greater than the height to which the third extension wall 432 protrudes in one direction (for example, upward) from the first extension wall 420.

[0203] The height to which the third extension wall 432 protrudes in one direction (for example, upward) from the first extension wall 420 may be greater than the height to which the fourth extension wall 433 protrudes in one direction (for example, upward) from the first extension wall 420.

[0204] The fourth extension wall 433 may include a first part 433a defining at least a portion of a rim of one cell 411a among a plurality of cells 411a, and a second part 433b defining at least a portion of a rim of another cell 411a.

[0205] The fourth extension wall 433 may include a third part 433c connecting the first part 433a and the second part 433b and having a shape recessed in a direction toward the cell 411a.

[0206] The third part 433c may be connected to the first wall part 413a of the partition wall 413.

[0207] In a space between the plurality of cell walls 411, a temperature sensor 428 for sensing the temperature of water or ice in the cell 411a may be arranged.

[0208] The temperature sensor 428 may contact an outer surface of the cell wall 411 or be arranged adjacent to the outer surface of the cell wall 411. For example, the temperature sensor 428 may be arranged to be contactable with an outer surface of one cell wall 411 and an outer surface of another cell wall 411 among the plurality of cell walls 411.

[0209] A sensor installation groove 411c (see FIG. 28) in which the temperature sensor 428 is arranged may be formed in at least one of the one cell wall 411 or the other cell wall 411. A locking step 414 may be defined by the sensor installation groove 411c.

[0210] The temperature sensor 428 is configured to have a length in one direction (for example, the Y-axis direction) of the tray 400 and may be arranged to pass through a center line in one direction (for example, the front-rear direction) of the cell 411a.

[0211] The cell 411a may be defined by the cell wall 411.

[0212] The inner surface of the cell wall 411 may form a cell surface 412 of the cell 411a.

[0213] The cell surface 412 may include a first cell surface 412a defining a bottom surface of the cell 411a.

[0214] The cell surface 412 may include a second cell surface 412b extending upward from one end of the first cell surface 412a, that is, toward an open end (for example, an upper end) of the cell 411a.

[0215] The second cell surface 412b may form a portion (for example, a front part) of the cell wall 411.

[0216] The second cell surface 412b may extend inclined from one end of the first cell surface 412a toward one direction (for example, upward) so that a width of the cell 411a in a first direction (for example, front-rear direction) increases toward the upper side.

[0217] The cell surface 412 may include a third cell surface 412c extending from the other end of the first cell surface 412a toward the open end (for example, an upper end) of the cell 411a.

[0218] The third cell surface 412c may form a portion (for example, a rear part) of the cell wall 411.

[0219] The third cell surface 412c may extend inclined from the other end of the first cell surface 412a toward one direction (for example, upward) so that the width of the cell 411a in the first direction (for example, front-rear direction) increases toward one direction (for example, upward).

[0220] The third cell surface 412c may include a surface facing the second cell surface 412b.

[0221] The cell surface 412 may include a fourth cell surface 412d forming one surface (for example, a side surface) of the cell 411a. The fourth cell surface 412d may extend in one direction (for example, upward) from both sides of the first cell surface 412a.

[0222] The fourth cell surface 412d may extend inclined from both sides of the first cell surface 412a toward one direction (for example, upward) so that a width of the cell 411a in a second direction (for example, left-right side) increases toward the upper side.

[0223] The fourth cell surface 412d may form one surface of the partition wall 413.

[0224] The tray 400 may be formed of a non-metallic material. For example, the tray 400 may be formed of a flexible or soft material whose shape can be deformed when pressed by the pusher 540. Without being limited, the tray 400 may be formed of, for example, a silicone material.

[0225] Accordingly, while the tray 400 is being pressed by the pusher 540, the tray 400 is deformed, and thus the pressing force of the pusher 540 may be transmitted to the ice. The ice and the tray 400 may be separated by the pressing force of the pusher 540.

[0226] If the tray 400 is formed of a non-metallic material and a flexible or soft material, the bonding force or adhesive force between the ice and the tray 400 may be reduced, so the ice may be easily separated from the tray 400.

[0227] If the tray 400 is formed of a non-metallic material and a flexible or soft material, after the shape of the tray 400 is deformed by the pusher 540, the tray 400 may be easily restored to its original shape when the pressing force of the pusher 540 is removed.

[0228] FIG. 12 is an upper perspective view of a tray supporter according to an embodiment of the present invention, FIG. 13 is a lower perspective view of a tray supporter according to an embodiment of the present invention, FIG. 14 is a view showing a state in which a temperature sensor is arranged on a tray according to an embodiment of the present invention, FIG. 15 is a perspective view showing a state in which a tray is supported by a tray supporter according to an embodiment of the present invention, FIG. 16 is a side view showing a state in which a tray is supported by a tray supporter according to an embodiment of the present invention, FIG. 17 is a partial perspective view showing a state in which a tray is supported by a tray supporter according to an embodiment of the present invention, and FIG. 18 is a cross-sectional view taken along line 18-18 of FIG. 16.

[0229] Referring to FIGS. 12 to 18, an ice maker 200 according to an embodiment of the present invention may include a tray supporter 450 supporting the tray 400.

[0230] At least a portion of the tray supporter 450 may be located at one side (for example, the lower side) of the tray 400.

[0231] The tray supporter 450 may support the tray 400 from one side (for example, the lower side) of the tray 400. For example, at least a portion of the tray wall 410 forming the cell 411a of the tray 400 may be supported by the tray supporter 450.

[0232] The tray supporter 450 may include a first wall 451 forming an outer surface. The first wall 451 may include at least one of a front wall 451a, a rear wall 451b, a first side wall 451c, a second side wall 451d, an upper wall 451e, or a bottom wall 451f of the tray supporter 450. The front wall, rear wall, first side wall, second side wall, upper wall, and bottom wall may be sequentially referred to as "first to sixth surface walls."

[0233] By the configuration of the first wall 451, the tray supporter 450 may have a hexahedral shape with an open first end (for example, an upper end) and a second end (for example, a lower end).

[0234] Inside the tray supporter 450, a through-hole 450a in which the tray 400 is located may be formed. When the tray 400 is arranged in the through-hole 450a, a part (for example, the upper part) and another part (for example, the lower part) of the tray 400 may be exposed to the outside of the tray supporter 450.

[0235] The tray supporter 450 may include a partitioning part 452 for separating the plurality of cell walls 411 of the tray 400.

[0236] The partitioning part 452 may extend from one end (for example, a front end) of the through-hole 450a toward the other end (for example, a rear end). One end of the partitioning part 452 is connected to one side of an inner circumferential surface of the tray supporter 450 defining the through-hole 450a, and the other end of the partitioning part 452 may be connected to the other side of the inner circumferential surface of the tray supporter 450.

[0237] For example, the partitioning part 452 may have a bar shape.

[0238] The partitioning part 452 may include a plurality of partitioning parts 452 to separate the plurality of cell walls 411.

[0239] A bottom surface of the partitioning part 452 may form a mounting surface 452a to which the temperature sensor 428 is coupled. The temperature sensor 428 is arranged on the mounting surface 452a and may be arranged to face the heater case 460.

[0240] The temperature sensor 428 may be interposed between a first side surface of any one cell wall 411 and a second side surface of another adjacent cell wall 411. The temperature sensor 428 may contact the first side surface and the second side surface.

[0241] On the upper wall 451e, the first extension wall 420 of the tray 400 may be supported. As the first extension wall 420 is seated on the upper wall 451e, the tray 400 may be stably supported by the tray supporter 450.

[0242] On the upper wall 451e, a protrusion 457 to be coupled to the tray 400 may be provided. The protrusion 457 may be inserted into the first coupling hole 423 of the tray 400.

[0243] The protrusion 457 may protrude from the upper wall 451e.

[0244] A plurality of protrusions 457 may be arranged along the circumference of the upper wall 451e. For example, five protrusions 457 may be provided on a part (for example, a front part) of the upper wall 451e, i.e., at the front side of the cell 411a, and five protrusions 457 may be provided on another part (for example, a rear part) of the upper wall 451e, i.e., at the rear side of the cell 411a. However, the number of protrusions 457 is not limited thereto.

[0245] The tray supporter 450 may include a protruding part 459 provided on the first side wall 451c. The protruding part 459 may protrude in one direction (for example, laterally) from the first side wall 451c.

[0246] The protruding part 459 may include a coupling part 459a connected to the driving part 510. The coupling part 459a may have a groove shape recessed from the outer surface of the protruding part 459 so that a shaft of the driving part 510 is inserted therein.

[0247] The protruding part 459 may include a recessed part 459b. The recessed part 459b is arranged at one side (for example, laterally) of the coupling part 459a and may have a groove shape recessed from the outer surface of the protruding part 459.

[0248] The recessed part 459b forms a weight-reduction groove, thereby preventing a phenomenon in which stress is concentrated at a specific point of the protruding part 459 due to the power transmitted from the driving part 510. By the recessed part 459b, the weight of the tray supporter 450 may be reduced.

[0249] The tray supporter 450 may include a wire guide 455 provided on the second side wall 451d. The wire guide 455 may protrude in one direction (for example, laterally) from the second side wall 451d.

[0250] The wire guide 455 includes a guide hole 455a, and a wire may be guided to the inside of the through-hole 450a through the guide hole 455a. The wire may include, for example, a wire connected to the temperature sensor 428 or the heater 490.

[0251] The tray supporter 450 may include a second wall 453 provided inside the first wall 451. The second wall 453 may be understood as a support wall supporting the tray 400.

[0252] The second wall 453 may support the cell wall 411 of the tray 400.

[0253] The second wall 453 may contact an outer surface of the cell wall 411.

[0254] The second wall 453 may have a shape bent along a circumference of the cell wall 411 so as to stably support the outer surface of the cell wall 411.

[0255] Based on a shape in which a size or width of the cell 411a increases toward one direction (e.g., upward), the second wall 453 may extend inclined toward the one direction (e.g., upward).

[0256] The second wall 453 may be arranged to support the fourth cell surface 412d.

[0257] The second wall 453 and the partitioning part 452 may form a mounting space 450b in which one cell wall 411 is positioned. The mounting space 450b may form a portion of the through-hole 450a.

[0258] A plurality of mounting spaces 450b may be formed to correspond to a plurality of cells 411a.

[0259] The tray supporter 450 may include third walls 454a and 454b provided inside the first wall 451. The third walls 454a and 454b may be understood as reinforcement walls for reinforcing the strength of the tray supporter 450.

[0260] The third walls 454a and 454b may be provided in a region where the coupling part 459a of the protruding part 459 is positioned. In detail, the third walls 454a and 454b may be provided on an inner side surface of a portion of the first wall 451 where the coupling part 459a is positioned.

[0261] The third walls 454a and 454b may include a first part 454a extending in one direction, for example, the X-axis direction, of the tray supporter 450. The first part 454a is connected to the first side wall 451c, extends toward the second side wall 451d, and may be connected to the second side wall 451d.

[0262] The point where the first part 454a connects to the first side wall 451c may form a portion of the inner surface of the first side wall 451c where the coupling part 459a is located.

[0263] The third walls 454a and 454b may include a second part 454b extending in another direction, for example, the Y-axis direction, of the tray supporter 450.

[0264] The second part 454b is connected to the first part 454a and may extend in one direction (for example, rearward), to connect to the rear wall 451b. A plurality of second parts 454b may be provided, and the plurality of second parts 454b may be spaced apart from each other in another direction (for example, the X-axis direction).

[0265] The third walls 454a and 454b may reinforce the strength of the tray supporter 450 when torsion may occur in the tray supporter 450 during the movement of the tray supporter 450.

[0266] The tray supporter 450 may include a boss 458 coupled to the heater case 460. The boss 458 may protrude in one direction (for example, downward), from one surface (for example, the bottom surface), of the upper wall 451e.

[0267] The boss 458 is aligned with the boss 463 of the heater case 460, and a prescribed fastening member may fasten the boss 458 of the tray supporter 450 to the boss 463 of the heater case 460.

[0268] Referring to FIGS. 15 and 16, in a state where the tray 400 is disposed in the tray supporter 450, the first extension wall 420 and the peripheral wall 430 of the tray 400 may protrude upward beyond the upper wall 451e of the tray supporter 450.

[0269] The first extension wall 420 is supported by the upper wall 451e, and the peripheral wall 430 may further protrude in one direction (for example, upward), from the first extension wall 420.

[0270] Among the peripheral wall 430, the fourth extension wall 433 may protrude from the first extension wall 420 by a first protrusion height H3.

[0271] Among the peripheral wall 430, the third extension wall 432 may protrude from the first extension wall 420 by a second protrusion height H4.

[0272] Among the peripheral wall 430, the second extension wall 431 may protrude from the first extension wall 420 by a third protrusion height H5.

[0273] The third protrusion height H5 may be greater than the second protrusion height H4, and the second protrusion height H4 may be greater than the first protrusion height H3.

[0274] The third extension wall 432 may extend inclined at a predetermined angle Θ1 from the fourth extension wall 433 toward the second extension wall 431.

[0275] FIG. 19 is an upper perspective view showing a configuration of a tray cover according to an embodiment of the present invention, FIG. 20 is a bottom perspective view showing a configuration of the tray cover according to an embodiment of the present invention, FIG. 21 is a view showing configurations of a tray, a tray supporter, and a tray cover according to an embodiment of the present invention, FIG. 22 is a view showing a partial configuration of the tray, the tray supporter, and the tray cover according to an embodiment of the present invention, and FIG. 23 is a cross-sectional view taken along line 23-23 of FIG. 21.

[0276] Referring to FIGS. 19 to 23, an ice maker 200 according to an embodiment of the present invention may include a tray cover 480.

[0277] At least a portion of the tray cover 480 may be positioned on one side (e.g., an upper side) of the tray 400.

[0278] The tray cover 480 may include a cover wall 481 forming an opening 482.

[0279] The opening 482 may be formed by penetrating at least a portion of the tray cover 480 so that at least a portion of the tray 400 passes through the opening482.

[0280] The opening 482 may be configured to have an area equal to or greater than a cross-sectional area of the plurality of cells 411a so that the plurality of cells 411a of the tray 400 may pass through.

[0281] The cover wall 481 may be placed on one side (e.g., an upper side) of the first extension wall 420 of the tray 400. The cover wall 481 may extend along a circumference of the first extension wall 420. The cover wall 481 may have a rectangular frame shape (e.g., a "□" shape) to form the opening 482 therein.

[0282] A hole 483 coupled to the tray 400 may be formed in the cover wall 481. The hole 483 may be aligned with the first coupling hole 423 of the tray 400.

[0283] A prescribed fastening member may be fastened to the hole 483 and may pass through the first coupling hole 423 to be fastened to a protrusion 457 of the tray supporter 450. An insertion groove 457a into which the fastening member is inserted may be formed in the protrusion 457.

[0284] A plurality of holes 483 may be formed along the circumference of the cover wall 481.

[0285] A protrusion 484 may be provided on the cover wall 481. The protrusion 484 may protrude toward the tray 400 from one surface (e.g., a bottom surface) of the cover wall 481. The protrusion 484 may be inserted into the second coupling hole 424 of the tray 400.

[0286] A plurality of protrusions 484 may be formed along the circumference of the cover wall 481.

[0287] The tray cover 480 may include a protruding part 485 protruding from an inner peripheral surface of the cover wall 481.

[0288] The protruding part 485 may be placed on one side (e.g., an upper side) of the partition wall 413 of the tray 400. For example, the protruding part 485 may be placed on one side (e.g., an upper side) of the fourth wall part 413d to be positioned in a region that separates the plurality of cells 411a.

[0289] A plurality of protruding parts 485 may be provided along the inner peripheral surface of the cover wall 481.

[0290] Referring to FIGS. 21 and 22, the first extension wall 420 of the tray 400 may be interposed between the tray supporter 450 and the tray cover 480 to be fixed in position.

[0291] The peripheral wall 430 of the tray 400 is positioned inside the opening 482 of the tray cover 480 and may protrude to a position higher than the tray cover 480.

[0292] The first extension wall 420 of the tray 400 may be stably supported between the tray supporter 450 and the tray cover 480 through a protrusion and groove structure, or a coupling structure by a fastening member.

[0293] Referring to FIG. 23, the protrusion 457 of the tray supporter 450 may protrude toward the tray 400 from the upper wall 451e.

[0294] One surface (e.g., a bottom surface) of the upper wall 451e may include a protruding part 457b into which a fastening member is inserted. The insertion groove 457a may be formed inside the protruding part 457b. That is, the insertion groove 457a may be formed inside the protrusion 457 and the protruding part 457b.

[0295] The fastening member may pass through the hole 483 of the tray cover 480 and be inserted into the protrusion 457 and the protruding part 457b.

[0296] FIG. 24 is a perspective view showing the configuration of a heater case and a heater according to an embodiment of the present invention, FIG. 25 is a plan view showing the configuration of the heater case and the heater according to an embodiment of the present invention,

[0297] FIG. 26 is a cross-sectional view taken along line 26-26 of FIG. 24, FIG. 27 is a cross-sectional view taken along line 27-27 of FIG. 24, FIG. 28 is a view showing a state in which a heater is disposed at a lower end of a tray according to an embodiment of the present invention, FIG. 29 is a bottom perspective view showing a partial configuration of an ice maker according to an embodiment of the present invention, FIG. 30 is a bottom perspective view showing a partial configuration of the ice maker in a state where the heater case is removed according to an embodiment of the present invention, and FIG. 31 is a cross-sectional view taken along line 31-31 of FIG. 29.

[0298] Referring to FIGS. 24 to 28, an ice maker 200 according to an embodiment of the present invention may include a heater case 460. A heater 490 may be disposed in the heater case 460. The heater case 460 may be coupled to the tray supporter 450.

[0299] The heater case 460 may include a case body 461 in which the heater 490 for transferring heat from one side (e.g., a lower side) of the tray 400 is disposed. The case body 461 may include a heater groove 461a accommodating at least a portion of the heater 490.

[0300] The case body 461 may form an opening 462. A portion of one end (e.g., a lower end) of the tray 400 may be inserted into the opening 462. A plurality of openings 462 may be provided in a number corresponding to the plurality of cells 411a, and the plurality of openings 462 may be arranged in one direction (e.g., the X-axis direction). For example, the opening 462 may be formed in a circular shape. However, it will not be limited to this shape.

[0301] At least a portion of the heater groove 461a may be formed along an outer circumference of the opening 462.

[0302] The heater case 460 may include a boss 463 protruding from the case body 461. A plurality of bosses 463 may be provided along the circumference of the case body 461.

[0303] The boss 463 is aligned with the boss 458 of the tray supporter 450, and a prescribed fastening member may be fastened to the bosses 463 and 458.

[0304] The heater case 460 may include a support protrusion 465 for supporting the temperature sensor 428. The support protrusion 465 protrudes from the case body 461 and may include a support surface that contacts the support protrusion 465 or is located adjacent to the support protrusion 465. The support protrusion 465 may prevent the temperature sensor 428 from being detached from the tray 400. The support protrusion 465 may be positioned between the plurality of openings 462.

[0305] The heater 490 may be disposed along the circumference of the opening 462 at a position in contact with or adjacent to the tray 400.

[0306] The heater 490 may include a first part 491 extending along the circumference of the opening 462. For example, the first part 491 may extend in a bent or rounded shape corresponding to the shape of the opening 462.

[0307] A plurality of first parts 491 may be provided to correspond to the plurality of openings 462.

[0308] The heater 490 may include a second part 492 connecting the plurality of first parts 491. The second part 492 may include a portion connected to both ends of the first part 491. The second part 492 may include a linearly extending portion. The second part 492 may extend from both sides of the support protrusion 465 to connect two adjacent first parts 491.

[0309] The first part 491 and the second part 492 may be integrally formed.

[0310] Referring to FIG. 28, the heater 490 may be disposed adjacent to or capable of contacting the tray 400.

[0311] The heater 490 may be disposed at an end (e.g., a lower end) of the tray 400.

[0312] For example, the heater 490 may be disposed at an end (e.g., a lower end) of the cell wall 411 forming the first cell surface 412a.

[0313] The first part 491 of the heater 490 may be disposed at the end (e.g., the lower end) of the cell wall 411. Since a plurality of cell walls 411 are provided, a plurality of first parts 491 may be provided and disposed at the end (e.g., the lower end) of each cell wall 411.

[0314] The second part 492 of the heater 490 is disposed to pass through a spaced space between a first cell wall 411 and a second cell wall 411 among the plurality of cell walls, and may connect the plurality of first parts 491.

[0315] A controller of the refrigerator may control the heater 490 to supply heat to the cell 411a during at least a portion of the period in which cold is supplied to the cell 411a so that transparent ice may be generated.

[0316] By the heat of the heater 490, transparent ice may be generated in the ice maker 200 by delaying the ice generation rate so that air bubbles dissolved in water inside the cell 411a may move from the portion where ice is being generated toward the liquid water. That is, the air bubbles dissolved in the water may be induced to escape to the outside of the cell 411a or be collected at a certain position within the cell 411a.

[0317] Meanwhile, when supplying cold air to the cell 411a, if the ice generation rate is fast, air bubbles dissolved in the water inside the cell 411a may freeze without moving toward the liquid water at the portion where ice is generated, resulting in low transparency of the generated ice.

[0318] Conversely, if the ice generation rate is slow when supplying cold to the cell 411a, this problem is resolved and the transparency of the generated ice increases, however a problem of a long ice-making time may occur.

[0319] Accordingly, the heater 490 may be disposed on one side (e.g., the lower side) of the cell 411a to locally supply heat to the cell 411a so as to increase the transparency of the generated ice while reducing the delay in ice-making time.

[0320] Referring to FIGS. 29 and 30, the heater case 460 is disposed below the tray 400, and a portion of one end (e.g., the lower end) of the tray 400 may be exposed to the outside through the opening 462.

[0321] When the heater case 460 is separated, the end (e.g., the lower end) of the tray 400 is exposed to the outside, and the tray 400 is positioned inside the through-hole 450a of the tray supporter 450.

[0322] Referring to FIG. 31, the tray 400 may be placed on one side (e.g., the upper side) of the heater case 460.

[0323] For example, the heater 490 is disposed in the heater case 460 and may be disposed to be contactable with the end (e.g., the lower end) of the tray 400.

[0324] To maintain the contact state between the tray 400 and the heater 490, a heater groove capable of receiving at least a portion of the heater 490 may be formed at the end (e.g., the lower end) of the tray 400.

[0325] To distinguish it from the heater groove 461a of the heater case 460, the heater groove 461a may be referred to as a "first heater groove," and the heater groove of the tray 400 may be referred to as a "second heater groove."

[0326] A space in which the temperature sensor 428 is positioned may be formed between the plurality of cell walls 411. A step 414 for supporting the temperature sensor 428 may be provided on a side surface of the cell wall 411 forming the second cell surface 412b or the third cell surface 412c.

[0327] The temperature sensor 428 is placed between the step 414 of a first cell wall 411 and the step 414 of an adjacent second cell wall 411, and may be supported by the partitioning part 452 of the tray supporter 450. The temperature sensor 428 may be prevented from being detached to the outside of the heater case 460 by the support protrusion 465 of the heater case 460.

[0328] The temperature sensor 428 may be positioned in a space between the partitioning part 452 and the support protrusion 465. In this way, since the heater 490 is disposed adjacent to the end (e.g., the lower end) of the tray 400 and may supply heat to the cell 411a, manufacturing transparent ice is easy.

[0329] Since the temperature sensor 428 is placed in a space defined by the tray 400, the tray supporter 450, and the heater case 460, and is disposed adjacent to the tray 400, the temperature of water or ice present in the cell 411a may be easily detected.

[0330] FIGS. 32a to 32e are views showing the operation of the ice maker according to an embodiment of the present invention.

[0331] Referring to FIG. 32a, when the tray assembly 400, 450 and 480 is at a water supply position, the tray 400 may be at a position moved in a forward direction by a predetermined angle Θ2 by a driving part 510. For example, the predetermined angle may be a value within a range of 20 to 25° to prevent water overflow.

[0332] Since water is supplied while the tray 400 is moved in the forward direction by the predetermined angle, water may be easily spread into the plurality of cells 411a.

[0333] During water supply, water from a water supply part 248 may flow into the cell 411a through one open surface (e.g., the top surface) of the tray 400.

[0334] At this time, water is supplied to the second extension wall 431 of the tray 400 and may spread in one direction (e.g., the X-axis direction) along the second extension wall 431. The spreading water may be distributed to the plurality of cells 411a. For example, water is supplied to a cell 411a close to the center among the plurality of cells 411a, and water spreading to other adjacent cells 411a may occur.

[0335] The inner surface of the second extension wall 431 may include a guide surface for guiding the flow of water.

[0336] The second wall part 413b of the partition wall 413 may form a portion of a water channel through which water passes when flowing to an adjacent cell 411a.

[0337] When a predetermined amount of water supply is completed, it may be possible to wait for a predetermined time so that water spreads and is supplied from the center cell 411a to the cells 411a on both sides.

[0338] When the water supply is completed, the water level may form a position lower than the second wall part 413b of the partition wall 413.

[0339] FIG. 32b shows the ice maker in an ice-making position. Referring to FIG. 32b, when the tray assembly is in the ice-making position, the tray 400 may move in a reverse direction from the water supply position by the driving part 510 to maintain a horizontal state.

[0340] In the ice-making position, cold is supplied to the cell 411a through the open top surface of the tray 400 by a cold supply means, and ice (I) may be generated in the cell 411a.

[0341] During the ice-making process, the heater 490 may be driven to generate transparent ice.

[0342] FIG. 32c shows the ice maker performing ice harvesting, and FIG. 32d shows the ice maker reaching a maximum ice harvesting position.

[0343] Referring to FIGS. 32c and 32d, when ice making is completed, the driving part 510 may move in a forward direction.

[0344] When the driving part 510 moves in the forward direction and the tray 400 is at the maximum ice releasing position, an end (e.g., a lower end) of the tray 400 may contact a pusher 540 and be deformed. Ice present in the tray 400 may be separated from the tray 400 by the pressing of the pusher 540.

[0345] The tray 400 may be formed of a flexible or soft material that may be deformed in shape when pressed by the pusher 540.

[0346] During the ice releasing, the heater 490 may be driven to help the ice be released well from the cell 411a.

[0347] Ice separated from the tray 400 may fall and be stored in an ice bin 600. When the ice releasing operation is completed, the driving part 510 is operated so that the tray assembly moves in a reverse direction and returns to the ice-making position (FIG. 32b).

[0348] When a water supply operation starts, the tray assembly may move in a forward direction toward the water supply position (FIG. 32a). At the water supply position, fluid is supplied through the water supply part 248 and may be supplied to the plurality of cells 411a.

[0349] An additional embodiment for controlling the water supply amount will be described.

[0350] To control the water supply amount, a sensor for detecting a water level may be disposed on a bracket 220 or the cell wall 411. For example, the sensor may be a temperature sensor or a capacitance sensor.

[0351] After water supply is completed at the water supply position of FIG. 32a, the water level may be detected through the sensor when moving to the ice-making position of FIG. 32b.

[0352] If it is determined that the water level is low through the sensor, a predetermined minimum water supply amount is added after moving back to the water supply position. Thereafter, these operations are repeated, and if a desired water level is detected, the ice-making operation of FIG. 32b and subsequent steps may be performed.

[0353] Meanwhile, when the sensor is configured as a temperature sensor, the temperature sensor may detect the water level based on a result of detecting an above-zero temperature when contacting water during water supply.

[0354] After ice releasing is completed, water supply may proceed after waiting until the temperature value detected by the temperature sensor before water supply becomes below zero. This is to prevent potential false detection because if the temperature detected by the temperature sensor after ice releasing is above zero, the difference between the temperature after ice releasing and the temperature after water supply is negligible when contacting above-zero water after water supply.Industrial Applicability

[0355] The present invention relates to an ice maker and / or a refrigerator equipped with an ice maker, and since transparent ice may be easily manufactured using a single tray, industrial applicability is significant.

Claims

1. A refrigerator comprising: a storage space in which food is stored; a door for opening and closing the storage space; an ice-making space provided in the door or the storage space; a cooler for supplying cold to the storage space; a cell provided in the ice-making space, the cell being a space where a substance undergoes a phase change from a liquid phase to a solid phase; and a single tray forming the cell, wherein the single tray includes an open end configured to receive the liquid substance or the cold.

2. The refrigerator according to claim 1, wherein the single tray comprises: a tray wall forming the cell; and an extension wall protruding from the tray wall to prevent the liquid substance from overflowing to the outside of the single tray when the liquid substance is supplied.

3. The refrigerator according to claim 2, wherein at a water supply position of the single tray, the single tray moves by a predetermined distance to allow the extension wall to move.

4. The refrigerator according to claim 1, wherein the single tray comprises: a tray wall forming the cell; a first extension wall extending from an end of the tray wall toward an outward direction of the tray wall; and a peripheral wall protruding from the first extension wall and arranged to surround the cell.

5. The refrigerator according to claim 4, wherein the peripheral wall comprises a second extension wall including a portion that protrudes most from the first extension wall among the peripheral wall and forming a guide surface for guiding a flow of water.

6. The refrigerator according to claim 1, wherein the peripheral wall comprises: a second extension wall extending downwardly inclined from the first extension wall; and a third extension wall connected to the second extension wall and extending along at least a portion of an edge of the cell.

7. The refrigerator according to claim 1, wherein the single tray comprises a plurality of cells and a partition wall separating the plurality of cells.

8. The refrigerator according to claim 7, wherein the partition wall comprises: a first wall part including a portion forming the highest position of the partition wall; and a second wall part provided at a position lower than the first wall part and forming a position higher than a water level upon completion of water supply.

9. The refrigerator according to claim 8, wherein the second wall part forms at least a portion of a water channel through which water flows from one cell to another cell at a water supply position.

10. The refrigerator according to claim 1, wherein the single tray comprises a first cell surface forming a first surface of the cell, a second cell surface forming a second surface of the cell, and a third cell surface forming a third surface of the cell, so as to form a polyhedral cell.

11. The refrigerator according to claim 1, further comprising a tray supporter supporting the single tray, wherein the tray supporter forms a through-hole through which the single tray passes to be positioned.

12. The refrigerator according to claim 11, wherein the tray supporter comprises: a first wall forming an outer appearance; and a second wall provided inside the first wall and supporting a cell wall defining the cell.

13. The refrigerator according to claim 11, wherein the cell comprises a plurality of cells, and wherein the refrigerator comprises a partitioning part for dividing the through-hole into a plurality of mounting spaces so that the plurality of cells are positioned separately.

14. The refrigerator according to claim 11, wherein the tray supporter comprises a protruding part protruding from the first wall, and the protruding part comprises a coupling part connecting to a driving part for moving the single tray.

15. The refrigerator according to claim 1, further comprising a tray cover in which the single tray is supported and having an opening in which at least a portion of the single tray is positioned, wherein the single tray includes an extension wall protruding from the opening.

16. The refrigerator according to claim 1, further comprising a heater disposed adjacent to the single tray and a heater case to which the heater is coupled.

17. The refrigerator according to claim 16, wherein the heater case comprises an opening into which the cell is inserted and a heater groove formed around the opening, and wherein the heater is disposed in the heater groove to provide heat toward one side surface of the tray.

18. The refrigerator according to claim 1, wherein the single tray comprises a first cell surface, a second cell surface, and a third cell surface so as to form a polyhedral cell, and wherein the tray is disposed to be contactable with the first cell surface.

19. The refrigerator according to claim 1, wherein the cell comprises a plurality of cells, and wherein the refrigerator comprises a temperature sensor disposed in a space between the plurality of cells to detect a temperature of the liquid or solid substance present in the plurality of cells.

20. A refrigerator comprising: a storage space in which food is stored; a door for opening and closing the storage space; an ice-making space provided in the door or the storage space; a cooler for supplying cold to the storage space; a cell provided in the ice-making space, the cell being a space where a substance undergoes a phase change from a liquid phase to a solid phase; a tray forming the cell; a tray supporter supporting the tray; and a heater case coupled to the tray supporter and in which a heater for providing heat to the tray is disposed, wherein the cell comprises a first cell surface, a second cell surface, and a third cell surface connected to each other to have a polyhedral shape, and wherein the heater is disposed at the first cell surface.

21. The refrigerator according to claim 20, further comprising a tray cover supported by the tray, wherein the tray, the tray supporter, and the tray cover are fastened by a fastening member.

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