Refrigerator

Abstract

A refrigerator according to one embodiment comprises: an ice-making chamber that provides a space in which ice is generated; and an ice maker having an ice-making cell, which is a space in which water is phase-changed into ice by cold air supplied to the ice-making chamber, wherein the ice maker includes: a first tray assembly having a first tray forming a part of the ice-making cell and a first tray cover coupled to the first tray; a second tray assembly having a second tray forming another part of the ice-making cell; and a cold air guide forming a cold air path for guiding cold air supplied to the ice-making chamber toward the ice-making cell, wherein a first cooling path, through which a portion of the cold air path flows, may be formed between one surface of the first tray cover and the first tray.

Description

refrigerator

[0001] This specification relates to a refrigerator.

[0002] A refrigerator is a household appliance that allows food to be stored at low temperatures within an internal storage space enclosed by a door. The refrigerator uses cold air to cool the interior of the storage space, thereby keeping the stored food in a refrigerated or frozen state.

[0003] Typically, a refrigerator's freezer is equipped with an ice maker. The ice maker collects water supplied from a water source or water tank in a tray, cools the water, and produces ice. The ice produced by the ice maker can be stored in an ice bin. The user can open the freezer door, access the ice bin, and remove the ice from the bin.

[0004] Prior art document, Korean Patent Publication No. 2021-0005783 (hereinafter referred to as “prior art document 1”) discloses a refrigerator.

[0005] The refrigerator of prior art document 1 includes a storage room where food is stored; a first tray assembly provided in the storage room and forming a part of an ice-making cell, which is a space where water changes into ice due to cold; and a second tray assembly forming another part of the ice-making cell.

[0006] Prior art Chinese Patent Publication No. 114174740A (hereinafter referred to as “prior art 2”) discloses an ice maker and ice bank installed in a refrigerator door.

[0007] Ice stored in the ice bank can be taken out through a dispenser assembly. The ice maker includes an elastic mold formed of an elastic material and forming a cavity, a heat exchanger connected to the elastic mold and configured to freeze water within the cavity, an elevating mechanism for easily discharging the ice from the cavity, and a driving mechanism for driving the elevating mechanism. The driving mechanism includes a motor and a rotating cam.

[0008] One embodiment provides a refrigerator in which an ice-making speed can be increased by allowing cold air to flow smoothly within an ice-making chamber.

[0009] Alternatively or additionally, one embodiment provides a refrigerator in which cold air can flow smoothly to each of the first tray and second tray sides within the ice making chamber, thereby increasing the ice making speed.

[0010] Optionally or additionally, one embodiment provides a refrigerator in which freezing of the water supply unit is reduced by the cold air of the cold air guide.

[0011] A refrigerator according to one aspect may include an ice maker having an ice-making chamber that provides a space where ice is created; and an ice-making cell that is a space where water changes into ice by cold air supplied to the ice-making chamber.

[0012] The ice maker may include a first tray assembly having a first tray forming a part of the ice making cell, a first tray cover coupled to the first tray, and a second tray assembly having a second tray forming another part of the ice making cell.

[0013] The above ice maker may further include a cold air guide forming a cold air path that guides cold air supplied to the ice making room toward the ice making cell.

[0014] A first cooling channel through which a portion of the cold air of the cold air channel flows can be formed between one surface of the first tray cover and the first tray.

[0015] The other surface of the first tray cover may form a second cooling channel.

[0016] The above cold air guide may include a first opening through which cold air is introduced and a second opening through which the introduced cold air is discharged.

[0017] Some of the cold air discharged through the second opening may flow through the first cooling passage, and some may flow through the second cooling passage.

[0018] The first tray and the second tray may be arranged in the Z-axis direction. At least a portion of the second cooling channel may be arranged in the Z-axis direction with the first cooling channel.

[0019] The cold air flowing through the second cooling channel can flow toward the second tray assembly.

[0020] The first tray cover may include a communication hole that connects the second cooling channel and the ice making cell.

[0021] The above cold air guide may further include a first guide wall forming a first surface of the cold air passage, and a second guide wall forming a second surface of the cold air passage.

[0022] The first tray may include an extension forming a third side of the cold air passage.

[0023] The first tray cover may include a first portion forming the first cooling channel and a second portion extending in a direction intersecting the first portion.

[0024] The first tray and the second tray may be arranged in the Z-axis direction. A portion of the second opening may be positioned further from the ice-making cell than the first portion in the Z-axis direction.

[0025] Another part of the second opening may be positioned closer to the ice-making cell than the first part in the Z-axis direction.

[0026] The second opening may include a portion positioned to face the second portion.

[0027] At least a portion of the second portion may be positioned further from the ice-making cell than the second opening in the Z-axis direction.

[0028] The second portion may include a cold air opening that is recessed toward the first cooling channel side at one end, or the second portion may include a cold air opening that penetrates the second portion at a location spaced from the first end.

[0029] At least a portion of the cold air on the second cooling path can pass through the cold air opening.

[0030] The cold air guide may further include a third guide wall that guides a portion of the cold air passing through the second opening to flow in a direction away from the ice making cell.

[0031] The third guide wall may include a portion positioned further from the ice-making cell than the second portion in the Z-axis direction.

[0032] The second portion may include a portion positioned closer to the ice-making cell than the second opening in the Z-axis direction.

[0033] The second opening may include a first region located furthest from the first opening, a second region communicating with the first region and having a height lower than the height of the first region, and a third region located closest to the first opening and having a height different from the height of the second region.

[0034] Some of the cold air discharged from the first region may flow through the first cooling passage, and some may flow through the second cooling passage.

[0035] The above ice maker may further include a water supply unit for supplying water to the ice making cell. The cold air guide may include a recessed portion in which the water supply unit is accommodated.

[0036] The above-mentioned recessed portion may include an inclined wall. The inclined wall may form a portion of the second opening. At least a portion of the water supply portion may be spaced apart from the inclined wall.

[0037] An insulating material may be provided between the wall forming the above-mentioned recessed portion and the above-mentioned water supply portion.

[0038] A protrusion is formed on one of the wall forming the recessed portion and the water supply portion, and the protrusion can contact the other of the wall forming the recessed portion and the water supply portion.

[0039] A protrusion groove for accommodating the protrusion may be formed in the wall forming the above-mentioned recess and in the other of the above-mentioned water supply portions.

[0040] The ice maker may further include a bracket supporting at least one of the cold air guide and the first tray assembly.

[0041] The above water supply unit may include a hook, and the bracket may include a hook fastening unit to which the hook is fastened.

[0042] The first tray may include an extension forming the cold air path together with the cold air guide.

[0043] The extension may include an opening through which another portion of the cold air of the cold air path passes. The outer surface of the second tray assembly may form a second cooling path through which the cold air passing through the opening flows.

[0044] According to another aspect, a refrigerator includes an ice maker having an ice-making chamber providing a space where ice is generated; and an ice-making cell which is a space where water is phase-changed into ice by cold air supplied to the ice-making chamber, wherein the ice maker may include a first tray assembly having a first tray forming a part of the ice-making cell and a first tray cover coupled to the first tray; a second tray assembly having a second tray forming another part of the ice-making cell; and a cold air guide forming a cold air path for guiding cold air supplied to the ice-making chamber toward the ice-making cell. The first tray may include an extension forming the cold air path together with the cold air guide.

[0045] A first tray cooling channel through which a portion of the cold air of the cold air channel flows can be formed between one surface of the first tray cover and the first tray.

[0046] The extension may include an opening through which another portion of the cold air of the cold air path passes. The outer surface of the second tray assembly may form a second tray cooling path through which the cold air passing through the opening flows.

[0047] The ice maker may further include a bracket supporting at least one of the cold air guide and the first tray assembly.

[0048] The above bracket may include a bracket extension portion that guides cold air passing through the opening.

[0049] The above bracket extension can overlap the opening in the arrangement direction of the first tray and the second tray.

[0050] The bracket may include a first member supporting at least one of the cold air guide and the first tray assembly.

[0051] The above bracket extension extends obliquely from the first member, and side guides may be formed on both sides of the bracket extension.

[0052] In one embodiment, a portion of the cold air supplied to the cold air guide flows toward the ice-making cell, and another portion flows entirely within the ice-making cell, so that the speed at which ice is produced in the ice maker can be increased.

[0053] In one embodiment, a portion of the cold air supplied to the cold air guide may flow toward the first tray side, and another portion may flow toward the second tray side, so that the speed at which ice is produced in the ice maker may be increased.

[0054] In one embodiment, the contact area between the water supply unit and the cold air guide may be reduced, or the freezing of the water supply unit by cold air flowing through the cold air guide may be reduced by the insulating member.

[0055] Fig. 1 (A) is a front view of a refrigerator according to the first embodiment, and Fig. 1 (B) is a drawing showing a state in which one door of the refrigerator is separated.

[0056] FIG. 2 (A) is a perspective view of the front of the first refrigerator door according to the first embodiment, and FIG. 2 (B) is a perspective view of the rear of the first refrigerator door according to the first embodiment.

[0057] Fig. 3 (A) is a drawing showing a state in which the basket and filter are separated from the first refrigerator door, and Fig. 3 (B) is a drawing showing a state in which the ice making room door and cover member are separated from the first refrigerator door.

[0058] Figure 4 is a cross-sectional view taken along line 4-4 of (A) of Figure 2.

[0059] Fig. 5 (A) is a drawing showing a state in which a cold air duct is connected to the door liner of the first embodiment, and Fig. 5 (B) is a drawing showing an ice-making room wall of the door liner of the first embodiment.

[0060] Figure 6 is a perspective view of an ice maker according to the first embodiment as viewed from the upper side.

[0061] Figure 7 is a plan view of an ice maker according to the first embodiment.

[0062] Figure 8 is a front view of an ice maker according to the first embodiment.

[0063] Fig. 9 (A) is a perspective view of the first tray of the first embodiment as viewed from above, and Fig. 9 (B) is a perspective view of the first tray of the first embodiment as viewed from below.

[0064] Fig. 10 (A) is a plan view of a first tray according to the first embodiment, and Fig. 10 (B) is a bottom view of the first tray according to the first embodiment.

[0065] Fig. 11 (A) is a perspective view of the first tray cover of the first embodiment as viewed from above, and Fig. 11 (B) is a perspective view of the first tray cover according to the first embodiment as viewed from below.

[0066] Fig. 12(A) is a plan view of the first tray cover of the first embodiment, and Fig. 12(B) is a cross-sectional view taken along line 12B-12B of Fig. 12(A).

[0067] Fig. 13(A) is a perspective view of the second tray assembly according to the first embodiment as viewed from above. Fig. 13(B) is a bottom view of the second tray assembly according to the first embodiment.

[0068] Fig. 14(A) is a perspective view of the second tray according to the first embodiment as viewed from above, and Fig. 14(B) is a perspective view of the second tray according to the first embodiment as viewed from below.

[0069] Fig. 15 (A) is a perspective view of a cold air guide according to the first embodiment as viewed from above, and Fig. 15 (B) is a perspective view of a cold air guide according to the first embodiment as viewed from below.

[0070] Fig. 16 (A) is a plan view of a cold air guide according to the first embodiment, and Fig. 16 (B) is a front view of a cold air guide according to the first embodiment.

[0071] Fig. 17 (A) is a perspective view showing a water supply unit installed in a cold air guide according to the first embodiment, and Fig. 17 (B) is a front view showing a water supply unit installed in a cold air guide according to the first embodiment.

[0072] Figure 18 is a cross-sectional view taken along line 18-18 of Figure 17 (B).

[0073] FIG. 19 is a perspective view showing a first tray assembly and a cold air guide and a water supply unit according to the first embodiment.

[0074] (A) of Fig. 20 is a cross-sectional view taken along 20A-20A of Fig. 19, and (B) of Fig. 20 is a cross-sectional view taken along 20B-20B of Fig. 19.

[0075] FIG. 21 is a perspective view showing a first tray assembly according to a second embodiment, a water supply unit, and a cold air guide.

[0076] Figure 22 (A) is a perspective view of a cold air guide according to the second embodiment viewed from above, and Figure 22 (B) is a perspective view of a cold air guide according to the second embodiment viewed from below.

[0077] Fig. 23(A) is a perspective view of a bracket according to the second embodiment, Fig. 23(B) is a front view of a bracket according to the second embodiment, and Fig. 23(C) is a cross-sectional view taken along line 23C-23C of Fig. 23(A).

[0078] Figure 24a is a cross-sectional view taken along line 24-24 of Figure 21.

[0079] Figure 24b is a drawing showing an ice maker according to the second embodiment installed in an ice room.

[0080] Figures 25 (A) and (B) are drawings showing a water supply unit and a cold air guide according to the third embodiment.

[0081] Fig. 26 (A) is a drawing showing a water supply unit according to the third embodiment, and Fig. 26 (B) is a drawing showing a modified example of the water supply unit of the third embodiment.

[0082] Fig. 27 is a drawing showing a water supply unit attached to a bracket according to the fourth embodiment.

[0083] Fig. 28 (A) is a drawing showing a first tray cover according to the fifth embodiment, and Fig. 28 (B) is a drawing showing a first modified example of the first tray cover according to the fifth embodiment.

[0084] Figure 29a is a drawing showing a second modified example of the first tray cover of the fifth embodiment.

[0085] Figure 29b is a drawing showing an ice maker including the first tray cover of Figure 29a installed in an ice room.

[0086] Figure 30b is a drawing showing a cold air guide of the sixth embodiment.

[0087] Figure 30b is a drawing showing an ice maker including the cold air guide of Figure 30a installed in an ice room.

[0088] Fig. 1 (A) is a front view of a refrigerator according to the first embodiment, and Fig. 1 (B) is a drawing showing a state in which one door of the refrigerator is separated.

[0089] FIG. 2(A) is a perspective view of the front of the first refrigerator door according to the first embodiment, and FIG. 2(B) is a perspective view of the rear of the first refrigerator door according to the first embodiment. FIG. 3(A) is a drawing showing a state in which a basket and a filter are separated from the first refrigerator door, and FIG. 3(B) is a drawing showing a state in which an ice-making door and a cover member are separated from the first refrigerator door.

[0090] Referring to FIGS. 1 to 3, the refrigerator (1) of the present embodiment may include a cabinet (2). The cabinet (2) may have a storage compartment. The refrigerator (1) may further include a door for opening and closing the storage compartment. The door may be movably connected to the cabinet (2).

[0091] The storage compartment may include a refrigerator compartment (18). The storage compartment may optionally or additionally include a freezer compartment (19). As an example, FIG. 1 (B) illustrates that the storage compartment includes a refrigerator compartment (18) and a freezer compartment (19).

[0092] The above door may include a refrigerator door (5) for opening and closing the refrigerator compartment (18). The refrigerator compartment (18) may be opened and closed by one or more refrigerator compartment doors (5). The door may further include a freezer compartment door (30) for opening and closing the freezer compartment (19). The freezer compartment (19) may be opened and closed by one or more freezer compartment doors (30).

[0093] Hereinafter, an example will be described in which the refrigerator (18) is opened and closed by the first refrigerator door (10) and the second refrigerator door (20).

[0094] At least one of the first refrigerator door (10) and the second refrigerator door (20) may include a dispenser (11) for discharging water and / or ice. Of course, depending on the type of refrigerator, the freezer door (30) may also be equipped with the dispenser (11).

[0095] At least one of the first refrigerator door (10) and the second refrigerator door (20) may include at least one ice maker (200).

[0096] If a refrigerator includes multiple ice makers, the types of ice produced by the ice makers may be the same or different. The size (or volume) of the ice produced by the ice makers may be the same or different. The transparency of the ice produced by the ice makers may be the same or different. In the multiple ice makers, the structure for producing ice and the method by which the produced ice is separated may be the same or different.

[0097] Hereinafter, an example in which an ice maker (200) is provided in the first refrigerator door (10) will be described. Of course, if necessary, an ice maker may also be provided in the second refrigerator door (20) or the freezer door (30). In this case, the dispenser (11) and the ice maker may be provided in the same door. Although not shown, it is also possible to provide an additional ice maker in at least one of the refrigerator compartment (18) and the freezer compartment (19).

[0098] Although (B) of Fig. 1 illustrates that the refrigerator (1) is a bottom-freezer type refrigerator, it should be noted that the spirit of the present invention can be equally applied to a side-by-side type refrigerator or a top-mount type refrigerator. In the case of a side-by-side type or top-mount type refrigerator, the freezer door may include an ice maker and dispenser, or the refrigerator door may include an ice maker and dispenser.

[0099] The above dispenser (11) may be positioned at the front of the first refrigerator door (10). A portion of the dispenser (11) may be recessed toward the rear to provide a space in which a container can be positioned.

[0100] The above dispenser (11) can discharge ice produced in the ice maker (200). At least a portion of the ice maker (200) can be positioned higher than the dispenser (11).

[0101] The first refrigerator door (10) may include an outer case (101). The outer case (101) may form the front exterior of the first refrigerator door (10). The first refrigerator door (10) may further include a door liner (102). The door liner (102) may be directly or indirectly connected to the outer case (101). The door liner (102) may open and close the refrigerator compartment (18).

[0102] When the outer case (101) and the door liner (102) are connected, an insulating space may be formed between the outer case (101) and the door liner (102). An insulating material may be provided in the insulating space. The insulating material may be formed by curing a foaming liquid injected from the outside. Alternatively, a vacuum insulator may be provided in the insulating space. It is also possible for the insulating material and the vacuum insulator to be provided together in the insulating space.

[0103] The refrigerator (1) may further include an ice-making chamber (122) that provides a space for ice production. The ice-making chamber (122) may be provided, for example, in the first refrigerator door (10). The ice maker (200) may be positioned in the ice-making chamber (122). For example, the door liner (102) may form the ice-making chamber (122). The ice-making chamber (122) may be formed by one surface of the door liner (102) being recessed toward the outer case (101).

[0104] The first refrigerator door (10) may further include an ice bin (600) in which ice produced by the ice maker (200) is stored. Ice stored in the ice bin (600) may be discharged to the dispenser (11). The ice bin (600) may be accommodated in the ice room (122) together with the ice maker (200). The ice bin (600) may be located at the bottom of the ice maker (200).

[0105] The above ice making room (122) may be supplied with cold air generated from a cooler. That is, the cooler may be configured to supply cold air to the ice making room (122). Alternatively, the cooler may be configured to operate to supply cold air to the ice making room (122).

[0106] The above-mentioned cold air may be supplied to lower the temperature of the surrounding air or medium by absorbing heat from the surrounding air or medium. Here, the cold air may be cold air or a cooling medium, and may lower the temperature of the ice making chamber (122) to cause the water in the ice maker (200) to change into ice. The cooling medium may be any substance that causes a cooling effect, and may be a fluid. The cold air may also be referred to as "cold."

[0107] The above cooler may be configured to cool the ice making room (122) by including at least one of a refrigerant cycle and a thermoelectric element. For example, cold air for cooling the freezer room (19) may be supplied to the ice making room (122).

[0108] The refrigerator (1) may further include a supply passage (2a) that guides cold air from a space where an evaporator, which generates cold air for cooling the freezer (19) or the freezer (19), is located to the first refrigerator door (10). The refrigerator (1) may include a discharge passage (2b) that guides cold air discharged from the first refrigerator door (10) to the freezer (19) or the space where the evaporator is located. The supply passage (2a) and the discharge passage (2b) may be provided in the cabinet (2).

[0109] The first refrigerator door (10) may include a cold air inlet (123a). When the first refrigerator door (10) is closed, the cold air inlet (123a) may be in communication with the supply passage (2a). The first refrigerator door (10) may further include a cold air outlet (123b). When the first refrigerator door (10) is closed, the cold air outlet (123b) may be in communication with the discharge passage (2b). The cold air inlet (123a) may be formed on one side of the door liner (102). Although not limited, the one side of the door liner (102) is a surface that faces a wall in the refrigerator (18) where the supply passage (2a) is located when the first refrigerator door (10) is closed. The above cold air outlet (123b) may be formed on one side of the door liner (102). Although not limited, the one side of the door liner (102) is a side that faces the wall where the discharge path (2b) is located in the cold room (18) when the first cold room door (10) is closed.

[0110] The above ice maker (200) can produce spherical ice. The term "spherical" as used herein means not only a geometrically spherical shape but also a shape similar to a spherical shape.

[0111] The one side of the door liner (102) may include a first side portion (102a) and a second side portion (102b) having different widths in the front-back direction. The width of the second side portion (102b) may be formed to be greater than the width of the first side portion (102a). At least one of the cold air inlet (123a) and the cold air outlet (123b) may be formed in the second side portion (102b) of the door liner (102). The second side portion (102b) may protrude further toward the refrigerator compartment (18) than the first side portion (102a).

[0112] The first refrigerator door (10) may further include an ice-making chamber door (130) that opens and closes the ice-making chamber (122). The ice-making chamber door (130) may be an insulated door having an insulator provided therein. The ice-making chamber door (130) may be rotatably connected to the first refrigerator door (10) by a hinge.

[0113] Meanwhile, a basket (136) (first basket) capable of storing food may be connected to the ice making room door (130). Of course, a basket (137) (second basket) may also be provided on the first refrigerator door (10). For example, the second basket (137) may be positioned below the first basket (136).

[0114] The first refrigerator door (10) may be formed with a component space (123) for accommodating components. The component space (123) may accommodate one or more of a valve (750) for controlling the flow of water, a filter (not shown) for purifying water, and a water tank (700) for storing water. The component space (123) may be formed by the door liner (102). Alternatively, the component space (123) may be formed by a separate wall connected to the door liner (102). The first refrigerator door (10) may further include a cover member (132) for covering the component space (123). The component space (123) may be provided with a holder (125) to which the filter is coupled.

[0115] The cover member (132) may include an opening (133). The filter may be coupled to the holder (125) through the opening (133). The second basket (137) may cover the opening (133). When the second basket (137) is separated, the opening (133) may be exposed. The holder (125) may be exposed through the opening (133).

[0116] Figure 4 is a cross-sectional view taken along line 4-4 of (A) of Figure 2.

[0117] Referring to FIGS. 3 and 4, the dispenser (11) may include a dispenser housing (11a). The dispenser housing (11a) may form a space (11b). A container such as a cup may be positioned in the space (11b). Water or ice may be discharged into the space (11b). At least a portion of the dispenser housing (11a) may be arranged to overlap the component space (123) in the front-rear direction.

[0118] The ice maker (200) may be vertically overlapped with the dispenser housing (11a). The ice bin (600) may be vertically overlapped with the dispenser housing (11a). As will be described later, the ice maker (200) may include a second pusher (530). The second pusher (530) may be vertically overlapped with the ice bin (600). The second pusher (530) may be vertically overlapped with the dispenser housing (11a).

[0119] The ice maker (200) may be installed on a support member (150) installed in the ice room (122) or may be installed directly on the door liner (102). FIG. 4 illustrates the ice maker (200) being installed on a support member (150).

[0120] The ice bin (600) may include an ice discharge unit (630) that operates to discharge stored ice. The ice discharge unit (630) may include, for example, a rotating member that rotates.

[0121] An ice chute (800) may be positioned at the lower side of the ice making room (122). The ice chute (800) may be opened and closed by a cap duct (820). An ice guide (840) may be positioned at the lower side of the ice chute (800). The ice chute (800) may provide a passage through which ice moves.

[0122] The ice in the ice bin (600) can move directly to the ice chute (800) or can move to the ice chute (800) by passing through the ice hole (153) formed in the support member (150).

[0123] The ice chute (800) can guide ice discharged from the ice bin (600) to the ice guide (840). The ice guide (840) can provide a passage through which ice moves. The ice guide (840) can guide ice to the space (11b). The ice chute (800) can overlap with at least a portion of the ice making chamber (122) in the vertical direction. At least a portion of the ice chute (800) can overlap with the ice maker (200) in the vertical direction.

[0124] As will be described later, the ice maker (200) may further include a first pusher (510). The second pusher (530) may be positioned closer to the outer case (101) than the first pusher (510). A horizontal distance between the second pusher (530) and the front surface of the outer case (101) may be shorter than a horizontal distance between a passage formed by the ice chute (800) and the front surface of the outer case (101). The first pusher (510) may overlap the ice discharge unit (630) in a vertical direction.

[0125] The above ice maker (200) can be overlapped vertically with the above water tank (700).

[0126] Fig. 5 (A) is a drawing showing a state in which a cold air duct is connected to the door liner of the first embodiment, and Fig. 5 (B) is a drawing showing the ice room wall of the door liner of the first embodiment.

[0127] Referring to FIG. 5, the door liner (102) may include an ice-making chamber wall (140) forming the ice-making chamber (122). The door liner (102) may further include a peripheral wall (102c). The peripheral wall (102c) may be spaced apart from the ice-making chamber wall (140) on the outside of the ice-making chamber wall (140).

[0128] The first refrigerator door (10) may further include a cold air duct (900). The cold air duct (900) may guide cold air introduced through the cold air inlet (123a) to the ice making room (122). The cold air duct (900) may guide cold air from the ice making room (122) to the cold air outlet (123b).

[0129] The cold air duct (900) may include a first duct (910) forming a first flow path. The first flow path may connect the cold air inlet (123a) and the ice making chamber (122). The cold air duct (900) may further include a second duct (920). The second duct (920) may form the first flow path together with the first duct (910).

[0130] A portion of the first duct (910) may be aligned with the cold air inlet (123a). A portion of the second duct (920) may be in contact with the ice-making chamber wall (140). Although not shown, a first opening may be formed in the ice-making chamber wall (140). The first opening is a supply opening through which cold air is supplied to the ice-making chamber (122). A portion of the second duct (920) may be aligned with the first opening. One surface of the second duct (920) may form the first flow path.

[0131] The cold air duct (900) may further include a third duct (930). The third duct (930) may form a second flow path. The second flow path may connect the cold air outlet (123a) and the ice making chamber (122). The third duct (930) may form the second flow path together with the second duct (920). For example, the other surface of the second duct (920) may form the second flow path. Although not shown, a second hole may be formed in the ice making chamber wall (140). The second hole is an exhaust hole through which cold air is discharged from the ice making chamber (122). The second hole may be located below the first hole. Another portion of the second duct (920) may be aligned with the cold air outlet (123b). A portion of the third duct (930) may be aligned with the second opening.

[0132] When the above ice maker (200) is installed in the freezer door (30), the cold air duct (900) may be omitted.

[0133] The ice-making chamber wall (140) may include a front wall (141). The front wall (141) may be a wall facing the outer case (101). The ice-making chamber wall (140) may further include a first side wall (143). The ice-making chamber wall (140) may further include a second side wall (144) positioned opposite the first side wall (143). The cold air duct (900) may be positioned between the second side wall (144) and the peripheral wall (102c). The first through hole (140a) and the second through hole may be formed in the second side wall (144). The ice-making chamber wall (140) may further include an upper side wall (142). The above ice making room wall (140) may further include a lower wall (148).

[0134] FIG. 6 is a perspective view of an ice maker according to the first embodiment as viewed from the upper side, FIG. 7 is a plan view of an ice maker according to the first embodiment, and FIG. 8 is a front view of an ice maker according to the first embodiment.

[0135] Referring to FIGS. 4 to 8, the ice maker (200) may include a bracket (220) supported by the support member (150) or supported by the ice room wall (140).

[0136] The above ice maker (200) can be directly or indirectly supported on the ice room wall (140) by the bracket (220).

[0137] When the ice maker (200) is directly supported on the ice room wall (140), the ice maker (200) may be supported on the front wall (141).

[0138] The ice maker (200) may include a first tray assembly (201). The first tray assembly (201) may form a part of an ice-making cell (203). The ice maker (200) may further include a second tray assembly (202). The second tray assembly (202) may form another part of the ice-making cell (203). The ice-making cell (203) is a space where water undergoes a phase change due to cold air.

[0139] A driving unit (480) may be mounted on one side of the bracket (220). The driving unit (480) may provide driving force to the second tray assembly (202). The first tray assembly (201) may be installed on the bracket (220). The second tray assembly (202) may move relative to the first tray assembly (201). For example, the second tray assembly (202) may move linearly, curvedly, or rotationally. The driving unit (480) may include a motor and a power transmission unit.

[0140] In the present embodiment, a portion of the water may be phase-changed into ice while being accommodated in a portion of the ice-making cell (203) formed by the first tray assembly (201). Another portion of the water may be phase-changed into ice while being accommodated in another portion of the ice-making cell (203) formed by the second tray assembly (202). In a state where ice-making is complete, a portion of the ice may be in contact with the first tray assembly (201). In a state where ice-making is complete, a portion of the ice may be in contact with the second tray assembly (202).

[0141] The above first tray assembly (201) may include a first tray (320).

[0142] The first tray (320) may form a part of the ice-making cell (203). For example, the first tray (320) may form a part of each of a plurality of ice-making cells (203).

[0143] At least a portion of the first tray (320) may be formed of a material having high thermal conductivity to facilitate the transfer of cold air. For example, at least a portion of the first tray (320) may be formed of a metal material. The first tray assembly (201) may include a first tray case. The first tray case may include a portion that contacts the first tray (320) or is supported by the first tray (320).

[0144] The first tray case may further include a first tray cover (300). The first tray cover (300) may be coupled with the first tray (320). The first tray cover (300) may be positioned on one side of the first tray (320).

[0145] The first tray (320) may be coupled to the bracket (220). For example, the first tray (320) may be coupled to the bracket (220) while the first tray cover (300) is coupled to one side of the first tray (320). Alternatively, when the bracket (220) is omitted, the first tray (320) may be coupled to the support member (150) or the ice room wall (140).

[0146] The second tray assembly (202) may include a second tray (360). The second tray (360) may form another portion of the ice-making cell (203). For example, the second tray (360) may form another portion of each of the plurality of ice-making cells (203).

[0147] At least a portion of the second tray (360) may be formed of a deformable material so that the ice can be easily separated.

[0148] The second tray assembly (202) may further include a second tray case. The second tray case may be in contact with the second tray (360).

[0149] The second tray case may include a second tray cover (350). A portion of the second tray cover (350) may be positioned closer to the first tray (320) than a portion of the second tray (360).

[0150] The second tray case may further include a second tray supporter (380). A portion of the second tray supporter (380) may be positioned further from the first tray (320) than a portion of the second tray (360).

[0151] The ice maker (200) may further include a water supply unit (240) for supplying water to the ice making cells (203). The water supply unit (240) may supply water to some of the plurality of ice making cells.

[0152] The ice maker (200) may further include a cold air guide (270). The cold air guide (270) may provide at least a portion of a passage for supplying cold air to the ice making cell (203).

[0153] In this specification, a passage for supplying cold air to the ice making cell (203) may be formed by the cold air guide (270), the first tray (320), and the first tray cover (300).

[0154] The cold air guide (270) may be adjacent to or in contact with the second side wall (144). The cold air guide (270) may be a separate component from the first tray cover (300) or may be a part of the first tray cover (300).

[0155] The driving unit (480) may be positioned on the opposite side of the second side wall (144) or the cold air guide (270) with respect to the ice maker (200). A slot (146, 147) may be formed in the ice room wall (140) through which at least one of a water pipe through which water flows and a connector (or wire) for connection to the ice maker (200) passes. The slot (146, 147) may be formed in the front wall (141).

[0156] The cold air guide (270) may be installed, for example, in the bracket (220), the first tray (320), or the first tray cover (300). The cold air guide (270) may be in contact with the first tray assembly (201). The cold air guide (270) may be in contact with at least one of the first tray (320) and the first tray cover (300).

[0157] The cold air guided by the cold air guide (270) can flow in a direction close to the driving unit (480). The arrangement of the driving unit (480) can prevent the driving unit (480) from acting as a flow resistance to the cold air.

[0158] The ice maker (200) may further include a temperature sensor (710) for detecting the temperature of water or ice in the ice-making cell. The temperature sensor (710) may, for example, detect the temperature of the first tray (320). The temperature sensor (710) may be mounted on the first tray (320). The temperature sensor (710) may be covered by an insulating member. The insulating member may prevent cold air from directly contacting the temperature sensor (710).

[0159] The ice maker (200) may further include a transmission unit (420) for transmitting the power of the driving unit (480). For example, the power of the driving unit (480) may be transmitted to the second tray assembly (202) by a plurality of transmission units (420). One transmission unit (420) among the plurality of transmission units may be connected to the driving unit (480). One transmission unit (420) may be coupled to one side of the second tray supporter (380). Another transmission unit (420) among the plurality of transmission units (420) may be coupled to the other side of the second tray supporter (380).

[0160] The above ice maker (200) may further include a shaft (not shown) coupled to each of the plurality of transmission units (420).

[0161] The ice maker (200) may further include a first pusher (510) that pressurizes the ice or the first tray assembly (201) during the freezing process. The first pusher (510) may, for example, push ice to separate the ice from the first tray (320). The first pusher (510) may, for example, penetrate the first tray cover (300) to push the ice. The first pusher (510) may push the ice by penetrating the first tray (320).

[0162] The first pusher (510) can receive power from the driving unit (480). For example, the first pusher (510) can receive power from the driving unit (480) transmitted to the second tray assembly (202).

[0163] The ice maker (200) may further include a pusher link (440). For example, a plurality of pusher links (440) may be connected to the first pusher (510). One side of the pusher link (440) may be connected to the first pusher (510), and the other side may be connected to the second tray assembly (202). For example, the other side of the pusher link (440) may be connected to the second tray supporter (380).

[0164] The ice maker (200) may further include an elastic member (460). One end of the elastic member (460) may be connected to the transmission unit (420), and the other end may be connected to the second tray assembly (202). When the elastic member (460) is tensioned, the position of the transmission unit (420) may be moved to an initial position by a restoring force. The elastic member (460) may increase the adhesion between the first tray assembly (201) and the second tray assembly (202) at the ice-making position. The other end of the elastic member (460) may be coupled to the second tray supporter (380).

[0165] The ice maker (200) may further include a second pusher (530) that pressurizes ice or the second tray assembly (202) during the freezing process. The second pusher (530) may be installed, for example, on the bracket (220). If the bracket (220) is omitted, the second pusher (530) may be installed on the support member (150) or the ice room wall (140).

[0166] The ice maker (200) may further include a full ice detection lever (550) for detecting the full ice level of the ice bin (600). One end of the full ice detection lever (550) may be connected to the driving unit (480). The other end of the full ice detection lever (550) may be connected to the bracket (220).

[0167] Meanwhile, the ice making room wall (140) may be provided with a recessed portion formed at a position corresponding to the driving unit (480). The recessed portion may include a first recessed portion (145a) formed in the first side wall (143). The recessed portion may further include a second recessed portion (145b) formed in the front wall (141).

[0168] The ice making chamber wall (140) may further include a third recessed portion (145c) in which a portion of the support member (150) is positioned. The third recessed portion (145c) may be formed in the front wall (141). The third recessed portion (145c) may be connected to the second recessed portion (145b).

[0169] Fig. 9(A) is a perspective view of the first tray of the first embodiment as viewed from above, and Fig. 9(B) is a perspective view of the first tray of the first embodiment as viewed from below. Fig. 10(A) is a plan view of the first tray according to the first embodiment, and Fig. 10(B) is a bottom view of the first tray according to the first embodiment.

[0170] Referring to FIGS. 9 and 10, the first tray (320) of the present embodiment can define a first cell (321) which is a part of the ice-making cell (203).

[0171] The first tray (320) may include a first cell wall (322) forming the first cell (321). The first cell (321) may be formed in a hemispherical shape or a shape similar to a hemisphere, for example.

[0172] The first tray (320) may form, for example, a plurality of first cells (321). The plurality of first cells (321) may be arranged in a plurality of rows so as to increase the number of ice cubes while reducing the size of the ice cubes produced. The plurality of first cells (321) may include a first cell portion (321a) arranged in a first row and a second cell portion (321b) arranged in a second row. The first row and the second row may be arranged in the Y-axis direction in the drawing. The Y-axis direction may be, for example, the front-back direction of the refrigerator or the front-back direction of the door. The first row may include a plurality of first cell portions (321a). The second row may include a plurality of second cell portions (321b).

[0173] The first tray (320) may further include holes (323a, 323b) that provide passages for water or cold air. The first tray (320) may further include an auxiliary storage chamber (323d). Water or cold air may pass through the auxiliary storage chamber (323d). The auxiliary storage chamber (323d) may be positioned above the holes (323a, 323b). An extension wall (323c) may extend upward around the holes (323a, 323b) to form the auxiliary storage chamber (323d).

[0174] The first tray (320) may further include an extension portion (324). The extension portion (324) may include a portion extending from the first cell wall (322).

[0175] The above extension (324) can provide a portion of a passage through which cold air flows.

[0176] The above extension portion (324) may include an opening (324a2). The opening (324a2) may be formed by cutting a portion of the extension portion (324). The opening (324a2) may be covered by a cover that is a separate component from the first tray (320).

[0177] The above cover may be a part of the first tray cover (300), a part of the cold air guide (270), or a part of the bracket (220). In this case, part or all of the opening (324a2) may be covered by the cover.

[0178] The first tray (320) may further include one or more fastening parts for fastening to the bracket (220). For example, the first tray (320) may include a first fastening part (324b1). The first tray (320) may further include a second fastening part (324b2).

[0179] The first and second fastening parts (324a, 324b) may extend in a direction intersecting the extension part (324). The first and second fastening parts (324b1, 324b2) may include fastening holes (324c, 324d).

[0180] The first tray (1320) may further include a supporter (325) that supports the configuration for movement of the second tray assembly (202).

[0181] The first tray (320) may further include a cover coupling portion for coupling with the first tray cover (300). The cover coupling portion may include a first coupling portion (325a). The cover coupling portion may further include a second coupling portion (325b) spaced apart from the first coupling portion (325a). Each of the first coupling portion (325a) and the second coupling portion (325b) may include a protrusion (325c).

[0182] The above cover joint may further include a third joint (327). The third joint (327) may be spaced apart from the first joint (325a) and the second joint (325b).

[0183] The first to third connecting portions (325a, 325b, 327) may be arranged, for example, in the Y-axis direction. Of course, depending on the case, one or more of the first to third connecting portions may be omitted or their shape may be modified.

[0184] The first tray (320) may further include a receiving groove (325d) for receiving a portion of the first tray cover (300). The receiving groove (325d) may be formed, for example, at positions corresponding to the first coupling portion (325a) and the second coupling portion (325b).

[0185] The first tray (1320) may further include a sensor mounting portion (326) on which the temperature sensor (710) is mounted. The sensor mounting portion (326) may be formed in a shape that is sunken downward. The temperature sensor (710) may be accommodated in the sensor mounting portion (326).

[0186] A portion of the sensor mounting portion (326) may be positioned between two adjacent first cell portions (321a). Another portion of the sensor mounting portion (326) may be positioned between two adjacent second cell portions (321b).

[0187] The sensor mounting portion (326) may include a guide groove (326b) through which a wire connected to the temperature sensor (710) is drawn out. The first tray (320) may further include a receiving portion (326a) that receives an insulating member that is mounted on the upper side of the temperature sensor (710).

[0188] The first tray (320) may further include a heater mounting portion (329) on which a heater (330) is mounted. The heater (330) may provide heat to the ice-making cell (203).

[0189] The heater (330) may operate at least after the completion of ice making to provide heat to the first tray (320) during the ice-breaking process. The heater (330) may function as a heater for ice-breaking. The heater (330) may be in contact with the first tray (320).

[0190] The first tray (320) may further include a guide portion (329a) that guides a portion of the heater (330) positioned outside the heater mounting portion (1329). The guide portion (329a) may include a sunken portion. A protrusion (329b) may be formed on one side of the guide portion (329a) to be fastened to the first tray cover (300).

[0191] The first tray (320) may further include one or more fastening bosses (328a) for fastening to the first tray cover (300). The fastening bosses (328a) may protrude from the extension portion (324).

[0192] Fig. 11(A) is a perspective view of the first tray cover of the first embodiment as viewed from above, and Fig. 11(B) is a perspective view of the first tray cover according to the first embodiment as viewed from below. Fig. 12(A) is a plan view of the first tray cover of the first embodiment, and Fig. 12(B) is a cross-sectional view taken along line 12B-12B of Fig. 12(A).

[0193] Referring to FIGS. 11 and 12, the first tray cover (300) of the present embodiment may include a first portion (301). The first tray cover (300) may further include a second portion (302) extending from one side of the first portion (301).

[0194] At least a portion of the first portion (301) may be spaced apart from the first tray (320). For example, at least a portion of the first portion (301) may be positioned on the upper side of the first tray (320).

[0195] The second portion (302) may extend from the first portion (301) in a direction intersecting the first portion (301). For example, the second portion (302) may extend from the first portion (301) in a direction away from the first tray (320).

[0196] The first tray cover (300) may include a communication hole (301b) aligned with the auxiliary storage compartment (323d) (or the through hole (323a, 323b)) of the first tray (320). For example, a plurality of communication holes (301b) may be formed in the first portion (301). The plurality of communication holes (301b) may be arranged in a first row and a second row.

[0197] The first part (301) may further include a sensor opening (1301). The sensor opening (1301) may be formed at a position corresponding to the sensor mounting portion (326). The first part (301) may further include a guide hole (1301a) through which a wire connected to the temperature sensor (710) is drawn out.

[0198] The first tray cover (300) may further include a first fastening hole (301d). The first fastening hole (301d) may be formed, for example, in the first part (301). A heater cover (see 340 in FIG. 18) that contacts the heater (330) or is supported by the heater (330) may be fastened to the first fastening hole (301d). A portion of the first part (301) may be sunken toward the ice-making cell (203). The first fastening hole (301d) may be formed in the sunken portion.

[0199] The first tray cover (300) may further include a second fastening hole (301g). The second fastening hole (301g) may be formed, for example, in the first portion (301). A fastening member for fastening to the first tray (320) may pass through the second fastening hole (301g). The second fastening hole (301g) may be aligned with a fastening boss (328a) of the first tray (320).

[0200] The second part (302) may be positioned between the second fastening hole (301g) and the communication hole (301b). The second part (302) may further include a recessed portion (1302) whose one side is recessed in a direction away from the second fastening hole (301g). The space in which the recessed portion (1302) is formed can prevent a fastening member fastened to the second fastening hole (301g) from interfering with the second part (302).

[0201] The first tray cover (300) may further include a water supply hole (301a). The water supply hole (301a) may be aligned with a through-hole (described later) of the water supply unit (240). The water supply hole (301a) may be formed, for example, in the first portion (301).

[0202] The second part (302) may be positioned between the first pusher (510) and the ice maker door (130). By the second part (302), even when the user directly opens the ice maker door (130), the user's fingers can be prevented from being caught in the first tray assembly (201) or the first pusher (510). Accordingly, parts of the user's body can be protected from injury, and malfunctions in the operation of the ice maker can be reduced.

[0203] The second portion (302) may include a passage (302a). The passage (302a) may provide a passage through which cold air or water flows.

[0204] The above-mentioned opening (302a) may be formed, for example, in a portion of the second portion (302) adjacent to the first portion (301).

[0205] The second portion (302) may further include a first hole (302c). The first hole (1302a) may also provide a passage through which cold air flows.

[0206] The second portion (302) may further include a second hole (302d). For example, a fastening member for fastening to the first tray (320) may pass through the second hole (302d).

[0207] The first tray cover (300) may further include a guide (303). The guide (303) may include a guide slot (303a).

[0208] The above first tray cover (300) may further include a guide cover (304) that comes into contact with a portion of the cold air guide (270).

[0209] The first tray cover (300) may include a first contact portion (304a) that contacts the cold air guide (270). The first tray cover (300) may further include a second contact portion (304c) that contacts the cold air guide (270). The second contact portion (304c) may be spaced apart from the first contact portion (304a). A fastening opening (304d) may be formed in the second contact portion (304c). The water supply hole (301a) may be positioned between the first contact portion (304a) and the second contact portion (304c).

[0210] The first tray cover (300) may further include a tray mounting portion (305) that is mounted on the first tray (320). The first tray cover (300) may further include a tray coupling portion (306) for coupling with the first tray (320). The third coupling portion (327) may be coupled to the tray coupling portion (306).

[0211] The first tray cover (300) may include a first coupling extension (305a). The first coupling extension (305a) may be coupled with the first coupling portion (325a). The first tray cover (300) may further include a second coupling extension (305a). The second coupling extension (305c) may be coupled with the second coupling portion (325b). Each of the first and second coupling extensions (305a, 305c) may include a protrusion hole (305b) for coupling a protrusion (325c).

[0212] The first tray cover (300) may further include a cover pressurizing portion (307) that contacts or presses the heater cover (see 340 in FIG. 18). The cover pressurizing portion (307) may protrude from the first portion (301).

[0213] Fig. 13(A) is a perspective view of the second tray assembly according to the first embodiment as viewed from above. Fig. 13(B) is a bottom view of the second tray assembly according to the first embodiment.

[0214] Referring to FIG. 13, the second tray assembly (202) of the present embodiment may include the second tray (360). The second tray assembly (202) may further include a second tray case positioned on one side of the second tray (360).

[0215] The second tray case may include a second tray cover (350). The second tray case may further include a second tray supporter (380).

[0216] The second tray case may further include a base portion (390). The base portion (390) may be in contact with the second tray (360). The base portion (390) may be in contact with the second tray supporter (380).

[0217] A portion of the second tray supporter (380) may be positioned between a portion of the second tray (360) and the base portion (390). A portion of the second tray (360) may be positioned between the second tray cover (350) and the base portion (390).

[0218] Fig. 14 (A) is a perspective view of the second tray according to the first embodiment as viewed from above, and Fig. 14 (B) is a perspective view of the second tray according to the first embodiment as viewed from below.

[0219] Referring to FIGS. 13 and 14, the second tray (360) may define a second cell (361), which is another part of the ice-making cell (203). The second tray (360) may include a second cell wall (362) forming the second cell (361).

[0220] The second tray (360) may form, for example, a plurality of second cells (361). The plurality of second cells (361) may be arranged in a plurality of rows. The plurality of second cells (361) may include a first cell portion (361a) arranged in a first row and a second cell portion (361b) arranged in a second row. The first cell portion (361a) may form another part of the first ice-making cell of the first row, and the second cell portion (361b) may form another part of the second ice-making cell of the second row.

[0221] The second tray (360) may further include a peripheral wall (365). The peripheral wall (365) may extend from the second cell wall (362) toward the first tray (320). The peripheral wall (365) may include a curved wall and a straight wall.

[0222] The second tray (360) may further include an extension portion (367). The extension portion (367) may extend from the second cell wall (362) or the peripheral wall (365).

[0223] The second tray cover (350) can be mounted on one surface of the extension portion (367). The other surface of the extension portion (367) can be mounted on the second tray supporter (380).

[0224] The second tray (360) may further include an extension bar (366). The extension bar (366) may extend from, for example, the second cell wall (362) or the extension portion (367).

[0225] The above extension bar (366) can be in contact with the base portion (390). For example, a portion of the base portion (390) can be inserted into the extension bar (366). The base portion (390) can limit the second tray (360) from being separated from the second tray supporter (380) when the second pusher (530) presses the second tray (360) during the moving process.

[0226] Fig. 15(A) is a perspective view of a cold air guide according to the first embodiment as viewed from above, and Fig. 15(B) is a perspective view of a cold air guide according to the first embodiment as viewed from below. Fig. 16(A) is a plan view of a cold air guide according to the first embodiment, and Fig. 16(B) is a front view of a cold air guide according to the first embodiment.

[0227] Referring to FIGS. 15 and 16, the cold air guide (270) may include a first opening (272) (or cold air inlet). The first opening (272) may provide a passage through which cold air flows into the interior of the space formed by the cold air guide (270).

[0228] The above cold air guide (270) may further include a second opening (278) (or cold air outlet). The second opening (278) may provide a passage through which cold air is discharged from the inside of the space formed by the cold air guide (270) to the outside.

[0229] The cold air guide (270) may include a first guide (271) forming the first opening (272). The cold air guide (270) may further include a second guide (275) forming the second opening (278). The second guide (275) may extend from the first guide (271). The first guide (271) and the second guide (275) may define a cold air passage (270a) which is a passage through which cold air flows.

[0230] The above cold air guide (270) may include a guide wall that provides one side of the space or cold air path (270a) formed by the cold air guide (270).

[0231] The above guide wall may include a first guide wall (275a). The first guide wall (275a) may provide a first surface of the cold air passage (270a). For example, the first surface may be a portion of the upper surface of the cold air guide (270).

[0232] The above guide wall may further include a second guide wall (276). The second guide wall (276) may extend from the first guide wall (275a). The second guide wall (276) may provide a second surface of the cold air passage (270a). The second surface may form a first side surface of the cold air passage (270a).

[0233] The second guide wall (276) may include a transition wall (276a) that flows to change the direction in which cold air flows within the cold air passage (270a). At least a portion of the transition wall (276a) may be rounded.

[0234] The second opening (278) may be provided in a guide wall that provides the upper surface, lower surface, side surface, or rear surface of the space formed by the cold air guide (270). Cold air introduced through the first opening (272) may be discharged through the second opening (278).

[0235] The above cold guide (270) may further include a bracket fastening portion (273a) fastened to the bracket (220). The bracket fastening portion (273a) may be formed on the first guide (271) or the second guide (275).

[0236] The above cold guide (270) may further include a fastening protrusion (273b) for fastening to the first tray cover (300).

[0237] The above cold guide (270) may further include a recessed portion (275b) for positioning a portion of the water supply portion (240). The recessed portion (275b) may be formed, for example, in the second guide (275).

[0238] The wall forming the above-mentioned recessed portion (275b) may include a vertical wall (275b3) extending in a vertical direction. The wall forming the above-mentioned recessed portion (275b) may include an inclined wall.

[0239] The above-mentioned inclined wall may include a first inclined wall (275b1). The first inclined wall (275b1) may slope downward as it moves away from the first opening (272).

[0240] The above-mentioned inclined wall may further include a second inclined wall (275b2). The inclination of the second inclined wall (275b2) with respect to a vertical line or a horizontal line may be different from that of the first inclined wall (275b1). The second inclined wall (275b2) is connected to the first inclined wall (275b1) and may be inclined with respect to the first inclined wall (275b1).

[0241] The second opening (278) may include a first region (278a). The first region (278a) may be a region located furthest from the first opening (272).

[0242] The second opening (278) may further include a second region (278b). The height or cross-sectional area of ​​the second region (278b) may be smaller than the height or cross-sectional area of ​​the first region (278a).

[0243] The second region (278b) may be a region located below the recessed portion (275b). For example, the second region (278b) may be located below the second inclined wall (275b2).

[0244] The second opening (278) may further include a third region (278c). The third region (278c) may be positioned closest to the first opening (272).

[0245] The height or cross-sectional area of ​​the third region (278c) is greater than the height or cross-sectional area of ​​the second region (278b). The height or cross-sectional area of ​​the third region (278c) is less than the height or cross-sectional area of ​​the first region (278a).

[0246] The third region (278c) may be a region located below the recessed portion (275b). For example, the third region (278c) may be located below the first inclined wall (275b1).

[0247] That is, the inclined wall may form a part of the second opening (278).

[0248] The second region (278b) may be located between the first region (278a) and the third region (278c).

[0249] The upper end of the first region (278a) may be positioned higher than the upper end of the second region (278b) and the upper end of the third region (278c). The upper end of the third region (278c) may be positioned higher than the upper end of the second region (278b).

[0250] The cold air flow rate in the first region (278a) may be greater than the cold air flow rates in the second region (278b) and the third region (278c).

[0251] According to this embodiment, the flow rate in an area located far from the first opening (272) may be greater than the flow rate in an area located close to it.

[0252] The second guide wall (276) may further include a side opening (279). The side opening (279) is located opposite the second opening (278) and increases the volume of the cold air passage (270a).

[0253] Fig. 17(A) is a perspective view showing a water supply unit installed in a cold air guide according to the first embodiment, and Fig. 17(B) is a front view showing a water supply unit installed in a cold air guide according to the first embodiment. Fig. 18 is a cross-sectional view taken along line 18-18 of Fig. 17(B).

[0254] Referring to FIGS. 17 and 18, the water supply unit (140) may include a slot (242) through which a water pipe passes.

[0255] The above water supply unit (240) may include a through hole (241) through which water is discharged. Water discharged through the through hole (241) may be supplied to the ice-making cell (203).

[0256] The above water supply unit (240) can be accommodated in the recessed portion (275b) of the cold air guide (270).

[0257] In a state where the water supply unit (240) is accommodated in the recessed portion (275b), the slot (242) can be positioned higher than the first guide wall (275a) of the cold air guide (270). Accordingly, the water pipe can pass through the slot (242) without interference with the first guide wall (275a).

[0258] The above water supply unit (240) may include a first body (243a). The first body (243a) may provide a passage through which water flows.

[0259] The above water supply unit (240) may include a second body that is inclined with respect to the first body (243a).

[0260] The second body may include a first inclined body (243b1). The first inclined body (243b1) may be positioned corresponding to the first inclined wall (275b1).

[0261] The second body may further include a second inclined body (243b2). The second inclined body (243b2) may be positioned corresponding to the second inclined wall (275b2).

[0262] In this embodiment, the cold air passing through the first opening (272) may first come into contact with the first inclined wall (275b1) among the walls forming the recessed portion (275b).

[0263] Accordingly, the temperature of the first inclined wall (275b1) may be the lowest. To prevent the water supply unit (240) from freezing, the first inclined body (243b1) may be spaced apart from the first inclined wall (275b1).

[0264] At least a portion of the second inclined body (243b2) may be spaced apart from the second inclined wall (275b2).

[0265] The above-mentioned water supply unit (240) may be coupled to the above-mentioned recessed portion (275b) in an insertion manner, for example. A portion of the first body (243a) of the above-mentioned water supply unit (240) may be in contact with the vertical wall (275b3) of the above-mentioned recessed portion (275b).

[0266] Some of the cold air passing through the first opening (272) can flow between the second guide wall (276) and the wall (275b4) facing the second guide wall (276).

[0267] In order to reduce freezing of the water supply unit (240) due to cold air coming into contact with the wall (275b4), the first body (243a) can be spaced apart from the wall (275b4) facing the second guide wall (276).

[0268] Fig. 19 is a perspective view showing a first tray assembly and a cold air guide and a water supply unit according to the first embodiment. Fig. 20 (A) is a cross-sectional view taken along line 20A-20A of Fig. 19, and Fig. 20 (B) is a cross-sectional view taken along line 20B-20B of Fig. 19.

[0269] Referring to FIGS. 19 and 20, the bracket (220) may include a first member (221). At least one of the cold air guide (270) and the first tray assembly (201) may be coupled to the first member (221). The first member (221) may be coupled to the support member (150) or the ice room wall (140).

[0270] The above bracket (220) may further include a second member (230) extending from the first member (221). The driving unit (480) may be coupled to the second member (230).

[0271] At least a portion of the first member (221) may intersect with at least a portion of the second member (230).

[0272] The first member (221) may further include a bracket extension (224). The bracket extension (224) may protrude from the first member (221). The bracket extension (224) may cover the opening (324a2) of the first tray (320). That is, the bracket extension (224) may serve as a cover covering the opening (324a2).

[0273] For example, the bracket extension (224) can be inserted into the opening (324a2).

[0274] The bracket extension (224) can form the cold air passage (270a) together with the extension (324) of the first tray (320). The bracket extension (224) and the extension (324) can form a third surface of the cold air passage (270a).

[0275] As another example, it is also possible that an opening is not formed in the extension portion (324) of the first tray (320) and the bracket extension portion (224) is omitted so that the extension portion (324) of the first tray (320) comes into contact with the first member (221).

[0276] The bracket (220) may further include a support protrusion (224a) that supports a portion of the second guide wall (276). The support protrusion (224a) may be positioned on the upper side of the bracket extension (224). When a portion of the second guide wall (276) is secured to the support protrusion (224a), the first member (221) of the bracket (220) may cover the side opening (279) of the cold air guide (270).

[0277] The above cold guide (270) can be mounted on at least one of the bracket extension (224d) and the extension (324) of the first tray (320).

[0278] As described above, the first part (301) of the first tray cover (300) may be spaced apart from the first tray (320). A cooling passage (310) (or first cooling passage) may be formed between the first part (301) and the first tray (320). That is, one side (or lower side) of the first tray cover (300) may form the cooling passage (310) between it and the first tray (320).

[0279] The cold air passing through the second opening (278) can flow through the cooling passage (310). The water in the ice-making cell (203) can be phase-changed into ice by the cold air flowing through the cooling passage (310).

[0280] A portion of the second opening (278) may be positioned further from the ice-making cell (203) than the first portion (301). For example, an upper portion of the second opening (278) may be positioned higher than the first portion (301). A portion of the cold air passing through the second opening (278) may flow above the first portion (301).

[0281] The other side (or upper side) of the first part (310) can form a circulation path (311) (or second cooling path).

[0282] The cold air flowing through the circulation path (311) can flow downward and toward the second tray (360). The cold air flowing through the circulation path (311) can flow through the upper side of the second part (301) and then descend and flow toward the second tray (360).

[0283] The cold air of the above cooling path (310) can intensively cool the first tray (320).

[0284] At least a portion of the above circulation path (311) and the above cooling path (310) can be arranged in the arrangement direction (for example, the Z-axis direction) of the first tray (320) and the second tray (360).

[0285] The above circulation path (311) can be communicated with the communication hole (301b) of the first tray cover (300). The above circulation path (311) can be communicated with the ice-making cell (203) through the communication hole (301b).

[0286] A portion of the cold air of the circulation path (311) may come into contact with the water or ice of the ice making cell (203) through the communication hole (301b). Another portion of the cold air of the circulation path (311) may flow toward the second tray (360) to cool the second tray (360). That is, the cold air of the circulation path (311) may flow from the ice making room to the lower side of the ice maker to cool the second tray (360).

[0287] According to this embodiment, there is an advantage in that the ice-making speed in the ice maker (200) can be increased by smooth flow of cold air within the ice-making chamber (122) through the cooling channel (310) and the circulation channel (311).

[0288] In addition, since the cold air of the circulation path (311) can cool the water or ice of the ice-making cell (203), the ice-making speed can be increased.

[0289] However, since the heat transfer of the first tray (320) is greater than the heat transfer of the second tray (360), the cold air guide (270) can be designed so that the amount of cold air flowing through the cooling channel (310) is greater than the amount of cold air flowing through the circulation channel (311) to improve cooling efficiency.

[0290] One end of the first region (278a) may be positioned further from the ice-making cell (203) than the first part (301). For example, the upper end of the first region (278a) may be positioned higher than the first part (301).

[0291] One end of the second region (278b) may be positioned closer to the ice-making cell (203) than the first part (301). For example, the upper end of the second region (278b) may be positioned higher than the first part (301).

[0292] One end of the third region (278c) may be positioned further from the ice-making cell (203) than the first part (301). For example, the upper end of the third region (278c) may be positioned higher than the first part (301).

[0293] Accordingly, a portion of the air that has passed through the first region (278a) and the third region (278c) can flow through the circulation path (311).

[0294] The second opening (278) can face the second portion (302). At least a portion of the second portion (302) can be positioned further from the ice-making cell (203) than the second opening (278). For example, at least a portion of the second portion (302) can be positioned higher than the second opening (278). The second portion (302) can reduce the exposure of the first pusher (510) to the outside.

[0295] Therefore, the cold air flowing in the above circulation path (311) can flow downwards over the second part (302).

[0296] Below, the ice making process and ice removal process in the above ice maker will be briefly described.

[0297] In the present embodiment, the driving unit (480) may be controlled by a control unit (not shown). The control unit may control the driving unit (480) so that the second tray assembly (202) moves to a water supply position, an ice-making position, and an ice-separating position.

[0298] The second tray assembly (202) can move in a first direction from the water supply position to the ice-making position. The second tray assembly (202) can move in a second direction opposite to the first direction from the ice-making position to the water supply position.

[0299] The second tray assembly (202) can move in the second direction from the ice-making position to the ice-separating position. The second tray assembly (202) can move in the first direction from the ice-separating position to the water-supplying position.

[0300] A water supply process can be performed at the water supply location of the second tray assembly (202). Water can be supplied to the ice making cell (203) through the water supply unit (240).

[0301] At the water supply location of the second tray assembly (202), at least a portion of the second tray (360) may be spaced apart from the first tray (320). For example, the first cell (321) and the second cell (361) may be spaced apart.

[0302] When the water supply is completed, the second tray assembly (202) can be moved to the ice-making position. When the second tray assembly (202) is moved to the ice-making position, the first tray (320) and the second tray (360) can come into contact. In this state, a complete ice-making cell (203) can be formed by the first cell (321) and the second cell (322). A portion of the water contained in the second tray (360) can be distributed to the first cell (321) of the first tray (320).

[0303] At the above ice-making position, an ice-making process can be performed. Cold air introduced into the ice-making chamber (122) through the first opening of the ice-making cell wall (140) can pass through the first opening (272) of the cold air guide (270). The cold air can pass through the second opening (278) after flowing through the cold air path (270a).

[0304] A portion of the cold air passing through the second opening (278) can flow through the cooling passage (310). Another portion of the cold air passing through the second opening (278) can flow through the circulation passage (311).

[0305] In this embodiment, cold air may be supplied to the ice making room (122) even during the water supply process. Alternatively, cold air may be supplied to the ice making room (122) only during the ice making process. Cold air may also be supplied to the ice making room (122) during the ice removal process.

[0306] While the ice making process is being performed, it can be determined whether ice making is complete based on at least one of the temperature detected by the temperature sensor (710) and the time for which cold air was supplied.

[0307] Once the ice-making process is completed, an ice-separating process may be performed. The ice-separating process may include a heating process in which the heater (330) operates. When the heater (330) is turned on, the heat of the heater (330) may be transferred to the ice-making cell (203). The heat of the heater (330) may enable the ice to be separated from the first tray (320). The turning off of the heater (330) may be determined based on at least one of the operating time of the heater (330) and the temperature detected by the temperature sensor (710).

[0308] The above-described moving process may further include a moving process in which the second tray assembly (202) moves. The moving process may be performed after the heater (330) is turned off, or the moving process may be performed while the heater (330) is operating, and the heater (330) may be turned off during the moving process.

[0309] In the above-described ice-making process, the second tray assembly (202) can move in the second direction from the ice-making position toward the ice-making position.

[0310] During the above-mentioned moving process, the second tray assembly (202) may be moved in the second direction by receiving power from the driving unit (480) to move the full ice detection lever (550).

[0311] While the second tray assembly (202) moves from the ice-making position to the ice-removing position, the first pusher (510) can be inserted into the first cell (321) through the holes (323a, 323b) of the first tray (320) to pressurize the ice.

[0312] While the second tray assembly (202) is moved to the ice removal position, the second pusher (530) presses the second tray (360) so that ice can be separated from the second tray (360).

[0313] Ice separated from the second tray assembly (202) can fall downward and be stored in the ice bin (600).

[0314] After the second tray assembly (202) is moved to the evacuating position, it can be moved in the first direction toward the water supply position.

[0315] Fig. 21 is a perspective view showing a first tray assembly, a water supply unit, and a cold air guide according to a second embodiment. Fig. 22 (A) is a perspective view of the cold air guide according to the second embodiment as viewed from above, and Fig. 22 (B) is a perspective view of the cold air guide according to the second embodiment as viewed from below.

[0316] This embodiment is otherwise identical to the first embodiment, except for the differences in the shape of the cold air guide and bracket. Therefore, only the characteristic parts of this embodiment will be described below.

[0317] Referring to FIGS. 21 and 22, the ice maker (200A) of the present embodiment may include a cold air guide (1270) and a water supply unit (240).

[0318] The above cold air guide (1270) may include a first opening (1272). The first opening (1272) may provide a passage through which cold air flows into the interior of the space formed by the cold air guide (1270).

[0319] The above cold air guide (1270) may further include a second opening (1278) (or cold air outlet). The second opening (1278) may provide a passage through which the cold air is discharged from the inside of the space formed by the cold air guide (1270) to the outside.

[0320] The cold air guide (1270) may include a first guide (1271) forming the first opening (1272). The cold air guide (1270) may further include a second guide (1275) forming the second opening (1278). The first guide (1271) and the second guide (1275) may define a cold air passage (1270a) which is a passage through which cold air flows.

[0321] The above cold air guide (1270) may include a guide wall providing one side of the cold air path (1270a). The guide wall may include a first guide wall (1275a).

[0322] The above guide wall may further include a second guide wall (1276). The second guide wall (1276) may extend from the first guide wall (1275a).

[0323] The above guide wall may further include a third guide wall (1277). The third guide wall (1277) may extend from the first guide wall (1275a).

[0324] For example, the second guide (1275) may include the first guide wall to the third guide wall (1275a, 1276, 1277).

[0325] The first guide wall (1275a) may include a first inclined surface (1275b). The first inclined surface (1275b) may be inclined in a direction closer to the second opening (1278). For example, the first inclined surface (1275b) may be inclined downward as it moves away from the first guide (1271).

[0326] The first guide wall (1275a) may further include a second inclined surface (1275c). The inclined direction of the second inclined surface (1275c) may be different from the inclined direction of the first inclined surface (1275b). The second inclined surface (1275c) may be inclined in a direction approaching the second opening (1278). The second opening (1278) may be formed in the first guide wall (1275a) or the third guide wall (1277).

[0327] The above cold guide (1270) may further include a recessed portion (1276c) for positioning a portion of the water supply portion (240). The recessed portion (1276c) may be formed, for example, in the second guide (1275).

[0328] The above cold guide (1270) may further include a protrusion (1273b) coupled to the bracket (200). The protrusion (1273b) may be formed, for example, on the second guide (1275).

[0329] The top of the second opening (1278) may be positioned at the same height as or lower than the first part (301) of the first tray cover (300).

[0330] Fig. 23(A) is a perspective view of a bracket according to the second embodiment, Fig. 23(B) is a front view of a bracket according to the second embodiment, and Fig. 23(C) is a cross-sectional view taken along line 23C-23C of Fig. 23(A). Fig. 24(A) is a cross-sectional view taken along line 24-24 of Fig. 21, and Fig. 24(B) is a drawing showing an ice maker according to the second embodiment installed in an ice room.

[0331] The bracket of this embodiment has the same basic shape as the bracket of the first embodiment, but differs in the bracket extension. Therefore, the characteristic parts of this embodiment will be described below.

[0332] Referring to FIGS. 23 and 24, the bracket (1220) may include a first member (1221) and a second member (1230).

[0333] The first member (1221) and the second member (1230) above have the same or similar shape as the first member (221) and the second member (230) of the first embodiment. Since the first member (1221) and the second member (1230) above have the same function as the first member (221) and the second member (230) of the first embodiment, a detailed description thereof will be omitted.

[0334] The first member (1221) may further include a bracket extension (1224). The bracket extension (1224) may protrude from the first member (1221). The bracket extension (1224) may guide cold air passing through the opening (324a2) of the first tray (320).

[0335] The above bracket extension (1224) can be positioned lower than the opening (324a2) of the first tray (320).

[0336] The above bracket extension (1224) can overlap the opening (324a2) of the first tray (320) in the Z-axis direction, which is the arrangement direction of the first tray (320) and the second tray (360).

[0337] At least a portion of the bracket extension (1224) may be inclined downward as it moves away from the first member (1221). Side guides (1225) may be formed on both sides of the bracket extension (1224).

[0338] Accordingly, the cold air passing through the first opening (1272) flows along the cold air passage (1270a), and a part of the cold air flows into the cooling passage (310) (or the first tray cooling passage), and another part of the cold air passes through the opening (324a2) of the first tray (320) and flows into the second tray cooling passage (312).

[0339] For example, the outer surface of the second tray assembly (202) may form the second tray cooling passage (312).

[0340] The lower end of the bracket extension (1224) may be positioned higher than the second cell (361) so that the cold air passing through the opening (324a2) of the first tray (320) flows directly toward the second tray assembly (202).

[0341] However, since the heat transfer of the first tray (320) is greater than the heat transfer of the second tray (360), the cold air guide (270) and the opening (324a2) can be designed so that the amount of cold air flowing through the first tray cooling channel (310) is greater than the amount of cold air flowing through the second tray cooling channel (312) to improve cooling efficiency.

[0342] According to the present embodiment, a portion of the cold air of the cold air passage (1270a) flows through the first tray cooling passage, and the other portion flows directly through the second tray cooling passage without passing through another structure, so that there is an advantage in that the ice-making speed in the ice maker can be increased. That is, since the cold air circulates smoothly within the ice-making chamber, the ice-making speed in the ice maker can be increased.

[0343] Figures 25 (A) and (B) are drawings showing a water supply unit and a cold air guide according to the third embodiment.

[0344] This embodiment is otherwise identical to the first embodiment, except that an insulating member is provided between the water supply unit and the cold air guide. Therefore, the characteristic parts of this embodiment will be described below, and the same drawing reference numerals will be used for the same components as the first embodiment.

[0345] Referring to Fig. 25, the water supply unit (240) may be accommodated in the recessed portion (275b) of the cold air guide (270). An insulating member (1241) may be provided between the wall forming the recessed portion (275b) and the water supply unit (240). The insulating member (1241) may further reduce freezing of the water supply unit (240).

[0346] At least a portion of the above insulating member (1241) may be positioned between the first inclined body (243b1) of the water supply unit (240) and the first inclined wall (275b1) of the recessed portion (275b).

[0347] A portion of the above insulation member (1241) may be placed between the vertical wall (275b3) and the water supply unit (240).

[0348] The above insulating member (1241) may be formed of a flexible material or a deformable material. The above insulating member (1241) may serve to fix the position of the water supply unit (240).

[0349] Fig. 26 (A) is a drawing showing a water supply unit according to the third embodiment, and Fig. 26 (B) is a drawing showing a modified example of the water supply unit of the third embodiment.

[0350] First, referring to (B) of FIG. 26, the water supply unit (240) may include one or more protrusions (1242) so that the contact area between the water supply unit (240) and the wall of the recessed portion (275b) is reduced when the water supply unit (240) is accommodated in the recessed portion (275b).

[0351] For example, the protrusion (1242) may protrude from the first body (243a) of the water supply unit (240). The protrusion (1242) may come into contact with the vertical wall (275b3) of the recessed portion (275b).

[0352] The movement of the water supply unit (240) can be restricted when the above protrusion (1242) is in contact with the above recessed portion (275b). To effectively restrict the movement of the water supply unit (240), a plurality of protrusions (1242) can be arranged horizontally spaced apart from the water supply unit (240).

[0353] Alternatively, conversely, it is also possible for a protrusion to be formed on the wall of the recessed portion (275b) and for the protrusion to come into contact with the water supply portion (240).

[0354] Next, referring to (B) of FIG. 26, the water supply unit (240) may include one or more protrusions (1243), and the recessed portion (257b) may include a protrusion groove (275b4) in which the protrusions (1243) are received.

[0355] Alternatively, conversely, it is also possible for a protrusion to be formed on the wall of the recessed portion (275b) and for the protrusion groove to be formed in the water supply portion (240).

[0356] Fig. 27 is a drawing showing a water supply unit according to the fourth embodiment attached to a bracket.

[0357] This embodiment is otherwise identical to the first embodiment, except that it differs in the way it is attached to the water supply bracket. Below, only the distinctive features of this embodiment will be described.

[0358] Referring to Fig. 27, the water supply unit (240) may include a hook (1244). The bracket (220) may include a hook fastening unit (1221a) to which the hook (1244) is fastened.

[0359] The above hook fastening portion (1221a) may be provided on the first member (221) of the bracket (220).

[0360] One side (221a) of the first member (221) is a side facing the cold air guide (270), and the other side (221b) is the opposite side of the one side.

[0361] The above hook fastening portion (1221a) may be provided on the other surface (221b). In this case, a part of the hook (1244) may be positioned higher than the upper surface of the first member (221), and another part may extend downward.

[0362] As another example, it is also possible for the hook fastening portion (1221a) to be provided on one side (221a) of the first member (221).

[0363] Fig. 28 (A) is a drawing showing a first tray cover according to the fifth embodiment, and Fig. 28 (B) is a drawing showing a first modified example of the first tray cover according to the fifth embodiment.

[0364] This embodiment is identical to the previous embodiments in other respects, except that there are differences in some aspects of the first tray cover. Therefore, only the characteristic parts of this embodiment will be described below, and the same drawing reference numerals will be used for the same components as the previous embodiments.

[0365] First, referring to (A) of FIG. 28, the upper end of the second portion (302) of the first tray cover (300) may be positioned higher than the first guide wall (275a) of the cold guide (270).

[0366] As described above, some of the cold air passing through the second opening (278) flows through the circulation path (311). In order for the cold air to flow smoothly from the circulation path (311) toward the second tray (360), the second portion (302) may be provided with cold air openings (302e, 302f).

[0367] The cold air opening (302e) may be formed by recessing downward from the upper end of the second portion (302), as shown in (A) of FIG. 28, for example. At this time, the lower end of the cold air opening (302e) may be positioned lower than the first guide wall (275). For example, a plurality of cold air openings (302e) may be spaced apart from each other.

[0368] Alternatively, the cold air opening (302f) may be formed to penetrate the second part (302) at a position spaced downward from the top of the second part (302), as in (B) of FIG. 28, for example. For example, a plurality of cold air openings (302f) may be spaced apart from each other.

[0369] At this time, the cold air openings (302e, 302f) may be arranged to face the first region (278a) from the second opening (278). At least a portion of the cold air openings (302e, 302f) may overlap with the first region (278a) in the Y-axis direction.

[0370] FIG. 29a is a drawing showing a second modified example of the first tray cover of the fifth embodiment, and FIG. 29b is a drawing showing an ice maker including the first tray cover of FIG. 29a installed in an ice room.

[0371] Referring to FIGS. 29a and 29b, in the present embodiment, the upper end of the second portion (302) of the first tray cover (300) may be positioned lower than the first guide wall (275) of the cold air guide (270).

[0372] Accordingly, some of the cold air passing through the second opening (278) can flow downward after flowing upward through the second part (302) without resistance of the second part (302) in the circulation path (311). The cold air flowing upward through the second part (302) can descend to the lower side of the ice maker and cool the second tray assembly (202) within the ice making chamber.

[0373] FIG. 30a is a drawing showing a cold air guide of the sixth embodiment, and FIG. 30b is a drawing showing an ice maker including the cold air guide of FIG. 30a installed in an ice room.

[0374] This embodiment is otherwise identical to the previous embodiments, except for the shape of the cooling guide. Therefore, only the characteristic parts of this embodiment will be described below, and the same drawing reference numerals will be used for the same components as the previous embodiments.

[0375] Referring to FIGS. 30a and 30b, the cold guide (270) of the present embodiment may further include a third guide wall (275d) extending from the first guide wall (275).

[0376] The third guide wall (275d) may be positioned above the first region (278a) and may guide some of the air passing through the first region (278a) to flow in a direction away from the ice-making cell (203).

[0377] For example, the third guide wall (275d) may be inclined upward toward the second portion (302) of the first tray cover (300). Accordingly, some of the air passing through the first region (278a) may move upward.

[0378] The third guide wall (275d) may include a portion positioned higher than the upper end of the second portion (302).

[0379] Accordingly, according to the present embodiment, some of the cold air passing through the second opening (278) can flow downward after flowing upwardly through the second portion (302) without any flow resistance of the second portion (302) due to the third guide wall (275d). The cold air flowing upwardly through the second portion (302) can descend to the lower portion of the ice maker to cool the second tray assembly (202).

Claims

1. An ice making room that provides a space for ice production; and An ice maker having an ice cell, which is a space where water changes into ice by cold air supplied to the ice making room, is included. The above ice maker, A first tray assembly comprising a first tray forming a part of the ice-making cell and a first tray cover coupled to the first tray; A second tray assembly having a second tray forming another part of the ice-making cell; and It includes a cold air guide that forms a cold air path that guides cold air supplied to the ice making room toward the ice making cell, A refrigerator in which a first cooling channel is formed between one surface of the first tray cover and the first tray, through which a portion of the cold air channel flows.

2. In paragraph 1, The other surface of the first tray cover forms a second cooling passage, The above cold guide is, The first opening through which cold air flows in, Includes a second opening through which the introduced cold air is discharged, A refrigerator in which some of the cold air discharged through the second opening flows through the first cooling passage, and some of the cold air flows through the second cooling passage.

3. In paragraph 2, The first tray and the second tray are arranged in the Z-axis direction, A refrigerator wherein at least a portion of the second cooling channel is arranged in the Z-axis direction with the first cooling channel.

4. In paragraph 2, A refrigerator in which cold air flowing through the second cooling channel flows toward the second tray assembly.

5. In paragraph 2, A refrigerator in which the first tray cover includes a communication hole that connects the second cooling channel and the ice-making cell.

6. In paragraph 2, The above cold air guide comprises a first guide wall forming a first surface of the cold air path, Further comprising a second guide wall forming a second surface of the above cold air passage, A refrigerator wherein the first tray includes an extension forming a third side of the cold air passage.

7. In paragraph 2, The first tray cover has a first part forming the first cooling passage, comprising a second portion extending in a direction intersecting the first portion; The first tray and the second tray are arranged in the Z-axis direction, A refrigerator wherein the second opening includes a portion located further from the ice-making cell than the first portion in the Z-axis direction, or a portion located closer to the ice-making cell than the first portion in the Z-axis direction.

8. In paragraph 7, A refrigerator wherein the second opening includes a portion positioned to face the second portion.

9. In paragraph 7, A refrigerator wherein at least a portion of the second portion is positioned further from the ice making cell than the second opening in the Z-axis direction.

10. In paragraph 9, The second part includes a cold air opening that is sunken toward the first cooling path side at one end, or The second portion includes a cold air opening penetrating the second portion at a position spaced apart from the first portion, A refrigerator wherein at least a portion of the cold air on the second cooling passage passes through the cold air opening.

11. In paragraph 9, A refrigerator wherein the cold air guide further includes a third guide wall that guides cold air passing through the second opening to flow in a direction away from the ice making cell.

12. In paragraph 11, A refrigerator in which the third guide wall includes a portion positioned further from the ice making cell than the second portion in the Z-axis direction.

13. In paragraph 7, A refrigerator wherein the second portion includes a portion positioned closer to the ice-making cell than the second opening in the Z-axis direction.

14. In paragraph 2, The second opening is a first region located furthest from the first opening, A second region that is connected to the first region and has a height lower than that of the first region, a third region located closest to the first opening and having a height different from that of the second region; A refrigerator in which some of the cold air discharged from the first region flows through the first cooling passage and some of the cold air flows through the second cooling passage.

15. In paragraph 1, The above ice maker, Further comprising a water supply unit for supplying water to the above ice making cell, The above cold guide is a refrigerator including a recessed portion in which the water supply portion is accommodated.

16. In paragraph 15, The above cold guide is, The first opening through which cold air flows in, Includes a second opening through which the introduced cold air is discharged, The above-mentioned depression includes an inclined wall, wherein the above-mentioned inclined wall forms a part of the second opening, A refrigerator wherein at least a portion of the water supply section is spaced apart from the inclined wall.

17. In paragraph 15, A refrigerator in which an insulating material is provided between the wall forming the above-mentioned depression and the above-mentioned water supply portion.

18. In paragraph 15, A refrigerator in which a protrusion is formed on one of the wall forming the recessed portion and the water supply portion, and the protrusion contacts the other of the wall forming the recessed portion and the water supply portion.

19. In paragraph 18, A refrigerator in which a protrusion groove for accommodating the protrusion is formed in the other of the wall forming the recessed portion and the water supply portion.

20. In paragraph 1, The first tray includes an extension forming the cold air path together with the cold air guide, The above extension portion includes an opening through which another portion of the cold air of the cold air passage passes, A refrigerator in which the outer surface of the second tray assembly forms a second cooling passage through which cold air passing through the opening flows.

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