Refrigerator

Abstract

The refrigerator of the present invention is configured to provide cold air to the refrigerator compartment, the freezer compartment, and the ice-making compartment using a single evaporator. In this case, the cold air passage for the ice-making compartment, which supplies cold air to the ice-making compartment, is configured to supply cold air to the upper space within the cold air passage for the freezer compartment, which supplies cold air to the refrigerator compartment and the freezer compartment, through an upper supply passage. As a result, since additional cold air is supplied to the cold air passage for the freezer compartment using the upper supply passage, sufficient cold air can be supplied to the freezer compartment and the refrigerator compartment using only a single evaporator.

Description

Technology Field

[0001] The present invention relates to a refrigerator having a refrigerator compartment and a freezer compartment that provide respective storage spaces, and an ice-making compartment provided in the refrigerator door. Background Technology

[0002] Generally, a refrigerator is a home appliance designed to store various foods for extended periods using cold air generated by the circulation of refrigerant through a freezing cycle.

[0003] Such a refrigerator is provided with one or more storage compartments partitioned from one another for freezing and storing objects. In this case, the storage compartment may be a storage compartment that opens and closes with a rotary door, or a storage compartment that allows for retrieval or storage using a drawer.

[0004] In particular, the above-mentioned storage room may include a freezer room for frozen storage of objects to be stored and a refrigerator room for refrigerated storage of objects to be stored, and may include two or more freezer rooms or two or more refrigerator rooms.

[0005] Meanwhile, recently, an ice-making compartment has been installed in the refrigerator door, allowing users to retrieve ice without opening the freezer.

[0006] That is, cold air passing through the evaporator in the cabinet is delivered to the refrigerator door via a cold air duct for the ice-making room, and when the refrigerator door is closed, the cold air duct for the ice-making room is supplied to the ice-making room through a connecting passage provided in the refrigerator door.

[0007] In this regard, various applications are available, such as Registered Patent No. 10-1639443, Published Patent No. 10-2009-0101525, and Registered Patent No. 10-1659622.

[0008] However, in the case of the aforementioned conventional technologies, there was an inconvenience in assembly because the grill fan assembly, which is located in the freezer and supplies cold air to the freezer, and the ice-making fan module, which supplies cold air to the ice-making room, are provided separately and then combined with each other.

[0009] In other words, as the above-mentioned ice-making fan module is provided with an additional fan duct for guiding cold air to the cold air duct for the ice-making room, there are cases where the fan duct does not align precisely with the cold air duct for the ice-making room during the process of installing the ice-making fan module on the grill fan assembly, and thus there was an inconvenience requiring the worker to exercise caution to align the fan duct with the cold air duct for the ice-making room.

[0010] In addition, the refrigerator having an ice-making compartment in the aforementioned refrigerator door is configured to selectively supply cold air to the refrigerator compartment, the freezer compartment, and the ice-making compartment using a single evaporator.

[0011] However, the refrigerator according to the aforementioned conventional technology has the disadvantage that the supply of cold air to the freezer is insufficient because it is configured to supply cold air to three spaces using a single evaporator.

[0012] In particular, since the freezer is provided with a larger space compared to the ice-making room, there is a disadvantage in that sufficient cold air is not supplied, even though sufficient cold air should be supplied compared to the ice-making room.

[0013] In addition, in the refrigerator according to the aforementioned conventional technology, a large amount of condensation is generated due to humid air flowing back from the refrigerator compartment through the cold air duct for the ice-making compartment during freezing operation, and there was a risk of malfunction of the ice-making fan due to the freezing of the generated condensation.

[0014] Of course, various efforts have already been made in the past to remove condensate or prevent freezing in the area where the above-mentioned ice-making fan module is located.

[0015] However, despite the aforementioned efforts, there was a problem in that related issues still existed because a structure to prevent cold air backflow from the cold air duct for the ice-making room or a structure to quickly remove condensate flowing into the ice-making fan module was not provided. Prior art literature

[0016] Registered Patent No. 10-1639443, Published Patent No. 10-2009-0101525, Registered Patent No. 10-1659622 The problem to be solved

[0017] The present invention has been devised to solve various problems according to the aforementioned prior art. The objective of the present invention is to provide a new type of refrigerator that enables smooth freezing operation of the freezer compartment with only one evaporator by allowing a portion of the cold air supplied through the cold air passage for the ice-making compartment to be supplied to the freezer compartment through the cold air passage for the freezer compartment when the ice-making fan and the freezer fan operate simultaneously.

[0018] In addition, another objective of the present invention is to provide a new type of refrigerator in which a cold air passage for the refrigerator room that guides cold air flow to the freezer room and a cold air passage for the ice-making room that guides cold air flow to the ice-making room can be partially shared, thereby preventing the phenomenon of cold air from the freezer room flowing back into the cold air passage for the ice-making room even when only the ice-making fan is operated independently.

[0019] In addition, another objective of the present invention is to provide a new type of refrigerator that minimizes the interference phenomenon between a portion of the cold air supplied to the cold air passage for the freezer by the ice-making fan and the cold air flow flowing through the cold air passage for the freezer by the freezing fan.

[0020] In addition, another objective of the present invention is to provide a new type of refrigerator that provides a condensate discharge structure at the location where the ice-making fan module is located, so that even if condensate is generated around the ice-making fan module, freezing of the ice-making fan module can be prevented. means of solving the problem

[0021] The refrigerator of the present invention for achieving the above-mentioned purpose is configured to provide cold air to the refrigerator compartment, the freezer compartment, and the ice-making compartment using a single evaporator. In this case, the cold air passage for the ice-making compartment, which supplies cold air to the ice-making compartment, is configured to supply cold air to the upper space within the cold air passage for the freezer compartment, which supplies cold air to the refrigerator compartment and the freezer compartment, through an upper supply passage. As a result, since additional cold air is supplied to the cold air passage for the freezer compartment using the upper supply passage, sufficient cold air can be supplied to the freezer compartment and the refrigerator compartment using a single evaporator.

[0022] In addition, the refrigerator of the present invention has a cold air passage for the freezer and a cold air passage for the ice-making room formed on at least one of the opposing surfaces between the grill pan and the shroud. As a result, compared to the conventional technology in which a duct for the ice-making fan is separately provided and connected to the shroud, the structure becomes simpler, and the inconvenience or defects during assembly are fundamentally eliminated.

[0023] In addition, the refrigerator of the present invention is configured such that the grill fan assembly on the refrigerator compartment side receives cold air from the grill fan assembly on the freezer compartment side through a connecting flow path. This enables cooling of the refrigerator compartment, freezer compartment, and ice-making compartment using a single evaporator.

[0024] In addition, the refrigerator of the present invention is formed such that the cold air outlet is located directly above the freezer fan on the upper surface of the freezer-side grill fan assembly. This allows sufficient cold air to be supplied to the refrigerator-side grill fan assembly.

[0025] In addition, the refrigerator of the present invention is equipped with a flow path opening / closing module that selectively blocks the cold air of the cold air flow path for the freezer, which is supplied to the grill fan assembly on the refrigerator compartment side through the connecting flow path. As a result, refrigeration and freezing operations can be performed separately using a single evaporator.

[0026] In addition, the refrigerator of the present invention is provided with a type of fan in which the freezer fan provides a greater airflow than the ice-making fan. As a result, sufficient cold air can be supplied to the refrigerator compartment through the operation of the freezer fan.

[0027] In addition, in the refrigerator of the present invention, the freezer fan is positioned at the central portion of the freezer-side grill fan assembly, and the ice-making fan is positioned on one side of the freezer fan. This enables even supply of cold air to each part of the freezer through each cold air outlet of the freezer-side grill fan assembly, while also allowing sufficient cold air to be supplied to the ice-making chamber.

[0028] In addition, the refrigerator of the present invention is formed such that the cold air passage for the ice-making chamber penetrates the wall adjacent to the side where the ice-making fan is located, relative to the freezer fan, among the two side walls of the freezer-side grill fan assembly. This allows the cold air duct for the ice-making chamber to be formed short.

[0029] In addition, the refrigerator of the present invention is configured to include a duct rib. Thus, the cold air duct for the freezer and the cold air duct for the ice-making room can be separated from each other by the duct rib.

[0030] In addition, the refrigerator of the present invention includes a first circumferential flow path rib surrounding the upper circumference of the ice-making fan module and a second circumferential flow path rib surrounding the lower circumference of the ice-making fan module. Thus, the cold air flow path for the ice-making chamber can be formed by the two circumferential flow path ribs.

[0031] In addition, the refrigerator of the present invention is formed such that the first circumferential flow channel rib and the second circumferential flow channel rib are spaced apart. As a result, an upper supply flow channel that is open vertically is formed in the spaced portion between the two circumferential flow channel ribs.

[0032] In addition, in the refrigerator of the present invention, the upper end of the second circumferential channel rib is positioned further above the center height of the freezer fan. This prevents the phenomenon in which cold air radiated in the radial direction of the freezer fan by the operation of the freezer fan flows back into the upper supply channel through the cold air discharge side of the upper supply channel, thereby obstructing the discharge of cold air.

[0033] In addition, the refrigerator of the present invention is formed such that the upper opening of the upper supply channel faces the cold air discharge port on the freezer side. As a result, the cold air supplied to the cold air channel for the freezer through the upper supply channel does not interfere with the flow of cold air swirling in the cold air channel for the freezer.

[0034] In addition, the refrigerator of the present invention is formed such that the upper end portion of the second circumferential duct rib is inclined or rounded so as to gradually become adjacent to the freezer fan. As a result, the cold air radiated while rotating along the upper circumference of the freezer fan can be sufficiently supplied to the cold air outlets located on both upper sides of the freezer fan.

[0035] In addition, the refrigerator of the present invention further has a lower supply channel formed in the freezer-side grill fan assembly. As a result, a portion of the cold air flowing along the cold air channel for the ice-making room can be supplied toward another freezer-side cold air discharge port positioned to communicate with the lower space within the cold air channel for the freezer room.

[0036] In addition, in the refrigerator of the present invention, the cold air passage for the freezer and the cold air passage for the ice-making room are formed by recessing the rear surface of the grill pan, and the lower supply passage is formed to discharge cold air toward one side wall of the recessed portion of the rear surface of the grill pan. As a result, the flow of cold air flowing within the cold air passage for the freezer is not interfered with by the cold air within the cold air passage for the ice-making room that is discharged into the cold air passage for the freezer through the lower supply passage.

[0037] In addition, a drain is formed in the shroud of the refrigerator of the present invention. As a result, condensate flowing through the lower supply channel can be smoothly discharged to the outside of the freezer-side grill fan assembly.

[0038] In addition, the cabinet is equipped with a return duct for the refrigerator compartment that recovers cold air from the refrigerator compartment to the evaporator. This allows the load on the evaporator to be reduced. Effects of the invention

[0039] As described above, the refrigerator of the present invention can partially supply cold air from the cold air path for the ice-making room to the cold air path for the freezer room by providing each supply path. This allows sufficient cold air to be supplied to the freezer room even when the freezer fan and the ice-making fan operate simultaneously, despite having only one evaporator, and also has the effect of preventing the phenomenon of cold air backflow from the freezer room when the ice-making fan operates independently.

[0040] In addition, the refrigerator of the present invention is configured such that each supply channel discharges cold air toward each auxiliary discharge port, thereby having the effect that the cold air provided from the cold air channel for the ice-making room through each supply channel does not interfere with the flow of cold air flowing through the cold air channel for the freezer room.

[0041] In addition, the refrigerator of the present invention has the effect of preventing the freezing of the ice-making fan because a lower supply channel is formed on the bottom surface (second circumferential channel rib) of the installation area of ​​the ice-making fan module, allowing sufficient cold air to be supplied to the lower compartment of the freezer, and condensate can be drained through the said lower supply channel.

[0042] In addition, the refrigerator of the present invention is configured to supply cold air to the cold air passage for the refrigerator of the refrigerator-side grill fan assembly through a cold air outlet formed on the upper wall of the cold air passage for the freezer and a connecting passage connected thereto, so it has the effect of enabling selective cold air supply to the refrigerator, freezer, and ice-making chambers with a single evaporator. Brief explanation of the drawing

[0043] FIG. 1 is a perspective view illustrating the external structure of a refrigerator according to an embodiment of the present invention. FIG. 2 is a perspective view illustrating the open state of the refrigerator door on the ice-making compartment side of a refrigerator according to an embodiment of the present invention. FIG. 3 is a schematic front view illustrating the internal structure of a refrigerator according to an embodiment of the present invention. FIG. 4 is a front view illustrating the state in which two refrigerator doors and two freezer doors are open to explain the internal structure of a refrigerator according to an embodiment of the present invention. FIG. 5 is a front view showing the two refrigerator doors and two freezer doors omitted to explain the internal structure of a refrigerator according to an embodiment of the present invention. FIG. 6 is a side cross-sectional view illustrating the internal structure of a refrigerator according to an embodiment of the present invention. Figure 7 is an enlarged view of section “A” in Figure 6. FIG. 8 is a perspective view illustrating an example of a flow path opening / closing module of a refrigerator according to an embodiment of the present invention. FIG. 9 is a perspective view of a key part illustrating the state in which a recovery duct for an ice-making chamber is connected to the freezer of a refrigerator according to an embodiment of the present invention. FIG. 10 is a rear perspective view with the outer case removed to explain the installation structure of a cold air duct for an ice-making room, a return duct for an ice-making room, a connecting flow path, and a return duct for a refrigerator according to an embodiment of the present invention. FIG. 11 is a rear view with the outer case removed to explain the installation structure of the connecting passage section and the return duct for the refrigerator chamber of a refrigerator according to an embodiment of the present invention. FIG. 12 is a side view with the outer case removed to explain the installation structure of the cold air duct for the ice-making room, the return duct for the ice-making room, the connecting flow path, and the return duct for the refrigerator room according to an embodiment of the present invention. FIG. 13 is a schematic diagram illustrating the flow path structure for supplying and recovering cold air to the ice-making chamber of a refrigerator according to an embodiment of the present invention. FIG. 14 is a detailed diagram illustrating the state in which a freezer-side grill fan assembly of a refrigerator according to an embodiment of the present invention is installed inside the freezer. FIG. 15 is a front perspective view to illustrate a freezer-side grill pan assembly of a refrigerator according to an embodiment of the present invention. FIG. 16 is an exploded perspective view seen from the front to explain a freezer-side grill pan assembly of a refrigerator according to an embodiment of the present invention. FIG. 17 is a perspective view seen from the rear side to explain a freezer-side grill pan assembly of a refrigerator according to an embodiment of the present invention. FIG. 18 is an exploded perspective view seen from the rear side to explain a freezer-side grill pan assembly of a refrigerator according to an embodiment of the present invention. FIG. 19 is a front view illustrating a freezer-measuring grill pan assembly of a refrigerator according to an embodiment of the present invention. FIG. 20 is a front view illustrating a shroud among the freezer-measuring grill pan assembly of a refrigerator according to an embodiment of the present invention. FIG. 21 is a rear view illustrating a shroud among the freezer-measuring grill pan assembly of a refrigerator according to an embodiment of the present invention. FIG. 22 is a front view illustrating a grill pan among a freezer-measuring grill pan assembly of a refrigerator according to an embodiment of the present invention. FIG. 23 is a rear view illustrating a grill pan among a freezer-measuring grill pan assembly of a refrigerator according to an embodiment of the present invention. FIG. 24 is a front view of a shroud shown to explain the cold air flow when controlling the refrigerator compartment temperature of a refrigerator according to an embodiment of the present invention. FIG. 25 is a side cross-sectional view of a refrigerator shown to explain the cold air flow when controlling the refrigerator compartment temperature according to an embodiment of the present invention. FIG. 26 is a state diagram illustrating the flow of cold air in the connecting passage and the return duct for the refrigerator compartment during temperature control of the refrigerator compartment according to an embodiment of the present invention. FIG. 27 is a front view of a shroud shown to explain the cold air flow when controlling the freezer temperature of a refrigerator according to an embodiment of the present invention. FIG. 28 is a side cross-sectional view of a refrigerator shown to explain the cold air flow when controlling the freezer temperature of a refrigerator according to an embodiment of the present invention. FIG. 29 is a front view of a shroud shown to explain the cold air flow when the freezer and ice-making chambers of a refrigerator according to an embodiment of the present invention are operated simultaneously. FIG. 30 is a front view of a shroud shown to explain the cold air flow when controlling the ice-making chamber temperature of a refrigerator according to an embodiment of the present invention. FIG. 31 is a side view of a refrigerator shown to explain the cold air flow when controlling the ice-making chamber temperature of a refrigerator according to an embodiment of the present invention. FIG. 32 is a schematic diagram illustrating the flow of cold air in the ice-making chamber during ice-making chamber temperature control of a refrigerator according to an embodiment of the present invention. FIGS. 33 to 35 are respective state diagrams shown to explain different application examples for each fan module of a refrigerator according to an embodiment of the present invention. Specific details for implementing the invention

[0044] Hereinafter, a refrigerator according to a preferred embodiment of the present invention will be described with reference to the attached FIGS. 1 to 35.

[0045] Figure 1 attached is a perspective view illustrating the external structure of a refrigerator according to an embodiment of the present invention, Figure 2 is a schematic perspective view illustrating the internal structure of a refrigerator according to an embodiment of the present invention, and Figure 3 is a schematic cross-sectional view illustrating the internal structure of a refrigerator according to an embodiment of the present invention.

[0046] Additionally, the attached FIG. 4 is a front view showing the state in which two refrigerator doors and two freezer doors are open to explain the internal structure of a refrigerator according to an embodiment of the present invention, and FIG. 5 is a front view showing the state in which two refrigerator doors and two freezer doors are omitted to explain the internal structure of a refrigerator according to an embodiment of the present invention.

[0047] As illustrated in these drawings, a refrigerator according to an embodiment of the present invention comprises a cabinet (10) having a refrigerator room (11) and a freezer room (12), and a refrigerator door (20a) having an ice-making room (21). The refrigerator room (11) is configured to receive cold air from a refrigerator room-side grill fan assembly (1), and the ice-making room (21) is located in one of the refrigerator doors (20a) and is configured to receive cold air from a freezer room-side grill fan assembly (2) together with the freezer room (12).

[0048] In addition, the above cold air is generated in one evaporator (40) and supplied to the refrigerator room (11), the freezer room (12), and the ice room (21) through the refrigerator room side grill fan assembly (1) and the freezer room side grill fan assembly (2). The freezer room side grill fan assembly (2) is configured such that the cold air flow path (224) for the freezer room and the cold air flow path (223) for the ice room are formed integrally, and the cold air from the cold air flow path (223) for the ice room is shared with the cold air flow path (224) for the freezer room through the supply paths (215a, 215b).

[0049] That is, by sharing cold air between the cold air passage (224) for the freezer and the cold air passage (223) for the ice-making room, selective cold air supply to the refrigerator room (11), the freezer room (12), and the ice-making room (21) is possible with a single evaporator (40), and by allowing a portion of the cold air supplied to the ice-making room (21) to be supplied to the freezer room (12), sufficient cold air can be supplied to the freezer room (12).

[0050] The refrigerator according to the embodiment of the present invention will be described in more detail as follows.

[0051] First, the refrigerator room (11) is a storage room provided for refrigerating the stored items, and the freezer room (12) is a storage room provided for freezing the stored items.

[0052] The above refrigerator room (11) is provided in the upper space within the cabinet (10), and the above freezer room (12) is provided in the lower space within the cabinet (10).

[0053] The cabinet (10) may be composed of an outer case (10a) forming an outer surface and two inner cases (10b, 10c) forming an inner surface.

[0054] At this time, among the two inner cases (10b, 10c), the upper inner case (hereinafter referred to as the “inner case for the refrigerator”) (10b) is the part that forms the refrigerator room (11), and the lower inner case (hereinafter referred to as the “inner case for the freezer”) (10c) is the part that forms the freezer room (12).

[0055] That is, the internal space of the inner case (10b) for the refrigerator is used as a refrigerator (11), and the internal space of the inner case (10c) for the freezer is used as a freezer (12).

[0056] The inner case (10b) for the refrigerator and the inner case (10c) for the freezer are configured as box-shaped structures with an open front and are formed spaced apart from each other.

[0057] A partition wall (10d) (see attached FIGS. 4 to 6) may be provided in the spaced portion between the two inner cases (10b, 10c). In this case, the partition wall (10d) may be a separate frame placed between the two inner cases (10b, 10c), a filling material filled between the two inner cases (10b, 10c), or provided as an empty space.

[0058] Additionally, the refrigerator room (11) is configured to be opened and closed by a refrigerator door (20a, 20b), and the freezer room (12) is configured to be opened and closed by a freezer door (30).

[0059] The above refrigerator doors (20a, 20b) are provided as two and consist of double-door rotary doors (doors installed to rotate horizontally) capable of opening and closing each side of the refrigerator (11).

[0060] The above freezer door (30) is composed of a drawer that is pulled out or pulled in from the freezer (12) in a sliding manner.

[0061] In particular, an ice-making room (21) is provided on the inner side (the side located inside the refrigerator when the refrigerator door is closed) of one of the two refrigerator doors (20a, 20b) (hereinafter referred to as the “first refrigerator door”) (20a). This ice-making room (21) is a storage room in which an ice tray (not shown) for making ice is provided in the refrigerator door (20a), and is formed to provide a space partitioned from the refrigerator (11). At this time, the first refrigerator door (20a) is a refrigerator door located on the left side when viewed from the front of the refrigerator.

[0062] Of course, although not shown, an ice-making room (21) may also be additionally provided in the other refrigerator door (the refrigerator door located on the right side when viewing the refrigerator from the front) (hereinafter referred to as the “second refrigerator door”) (20b) among the two refrigerator doors (20a, 20b) mentioned above, or the refrigerator may be configured so that an ice-making room (21) is provided only in the second refrigerator door (20b).

[0063] In addition, an evaporator (40) is provided in the cabinet (10).

[0064] The above evaporator (40) may be located on the rear side (rear side of the freezer) inside the inner case (10c) for the freezer. More specifically, the above evaporator (40) may be located on the upper side of the machine room (15).

[0065] The machine room (15) is provided on the rear side of the bottom of the inner case (10c) for the freezer and provides a space for installing a compressor and a condenser.

[0066] At this time, the lower rear space within the freezer (12) has a freezing space that is narrower than the upper rear space within the freezer (12) by the size of the machine room (15). That is, the upper part of the freezer (12) is formed to protrude further rearward than the lower part of the freezer (12), and the evaporator (40) is located in the upper rear space of the freezer (12).

[0067] In addition, the cabinet (10) is equipped with a recovery duct (53) for a refrigerator.

[0068] The above-mentioned recovery duct (53) for the refrigerator room is a duct provided to recover cold air flowing inside the refrigerator room (12) to the cold air inlet side of the evaporator (40).

[0069] One end of the recovery duct (53) for the refrigerator is connected to the lower end of the rear of the inner case (10b) for the refrigerator that forms the cabinet (10), and the other end of the recovery duct (53) for the refrigerator is connected to the cold air inlet side (bottom of the evaporator) of the evaporator (40) on the rear of the inner case (10c) for the freezer that forms the cabinet (10).

[0070] One end of the above-mentioned recovery duct (53) for the refrigerator is configured to be connected to the side of the connecting passage (54).

[0071] The above connecting channel (54) is a structure in which a channel is formed inside to provide cold air generated in the freezer-side grill fan assembly (2) to the refrigerator-side grill fan assembly (1).

[0072] Although not shown, the above connecting channel (54) may be formed as a hollow tube (duct) or as a flexible material such as a hose.

[0073] Of course, the above connecting channel (54) may be formed in the refrigerator-side grill pan assembly (1) or in the freezer-side grill pan assembly (2).

[0074] In an embodiment of the present invention, the connecting passage (54) is formed separately from the cabinet (10) and the two grill pan assemblies (1, 2) and is configured to be connected to the two grill pan assemblies (1, 2).

[0075] In addition, a freezer-side grill fan assembly (2) is provided in front of the evaporator (40).

[0076] The above freezer-measuring grill fan assembly (2) is configured to selectively supply cold air to the freezer (12) and the ice-making room (21) by installing two fan modules (230, 240) together.

[0077] That is, two fan modules (230, 240) are provided collectively to a single freezer-side grill fan assembly (2), and a structure for guiding the flow of cold air blown by these two fan modules (230, 240) is formed integrally in the freezer-side grill fan assembly (2).

[0078] In addition, a cold air duct (51) for an ice-making room is provided between one side wall of the outer case (10a) and the two inner cases (10b, 10c) forming the cabinet (10).

[0079] The above cold air duct (51) for the ice making room is a duct that guides the supply of cold air received from the freezer-side grill fan assembly (2) to the ice making room (21).

[0080] One end (51a) of the cold air duct (51) for the ice room is installed to pass through and connect to one side of the freezer-side grill fan assembly (2) (the side where the refrigerator door with the ice room is located, the right side in the drawing when viewed from the rear). That is, one side between the grill fan (220) and the shroud (210) forming the freezer-side grill fan assembly (2) is formed to be open, forming an outlet through which cold air from the cold air passage (223) for the ice room flows out, thereby allowing the cold air blown by the ice fan (241) to flow smoothly without a sudden change in direction. This is as illustrated in the attached FIGS. 10 and 12.

[0081] In addition, the other end (51b) of the cold air duct (51) for the ice making room is installed to penetrate the side wall of the inner case (10b) for the refrigerator room and be exposed inside the refrigerator room (11).

[0082] At this time, the other end (51b) of the cold air duct (51) for the ice room is configured to align with the supply guide duct (21a) provided in the first refrigerator door (20a) when the first refrigerator door (20a) in which the ice room (21) is provided is closed, and to supply cold air to the supply guide duct (21a). The supply guide duct (21a) is formed to extend to the ice room (21) and to supply cold air to the ice room (21).

[0083] In addition, the first refrigerator door (20a) is further provided with a recovery guide duct (21b), and one end of the recovery guide duct (21b) is connected to the ice-making room (21), while the other end is extended to the bottom side of the side wall of the first refrigerator door (20a) to guide the recovery flow of cold air passing through the ice-making room (21). This is illustrated in the attached FIG. 13.

[0084] Additionally, a recovery duct (52) for an ice-making room is provided between the outer case (10a) of the cabinet (10) and one of the side walls of the two inner cases (10b, 10c).

[0085] The above ice-making room recovery duct (52) is a duct that guides cold air passing through the ice-making room (21) to be recovered into the freezer room (12).

[0086] One end (52a) of the above ice-making room recovery duct (52) is installed to penetrate the side wall of the inner case (10b) for the refrigerator room and be exposed inside the refrigerator room (11). At this time, the other end of the recovery guide duct (21b) is configured so that it aligns with the one end (52a) of the above ice-making room recovery duct (52) when the refrigerator door (20a) in which the ice-making room (21) is provided is closed.

[0087] In addition, the other end (52b) of the recovery duct (52) for the ice making room is installed to be exposed inside the freezer room (12) by penetrating the recovery discharge hole (12a) (see attached FIG. 6 and FIG. 9) formed in the side wall of the inner case (10c) for the freezer room.

[0088] Meanwhile, the refrigerator-side grill fan assembly (1) of the refrigerator according to an embodiment of the present invention is configured to supply cold air received from the freezer-side grill fan assembly (2) to each part within the refrigerator room (11) through the connecting passage (54), and the freezer-side grill fan assembly (2) is configured to selectively supply cold air that has undergone heat exchange via the evaporator (40) to the refrigerator room (11), the freezer room (12), or the ice-making room (21).

[0089] At this time, the connecting channel (54) is configured to connect the lower central portion of the refrigerator-side grill fan assembly (1) and the upper central portion of the freezer-side grill fan assembly (2).

[0090] The above-mentioned refrigerator-side grill fan assembly (1) is configured to supply cold air supplied from the above-mentioned connecting passage (54) to each part within the refrigerator room (11) through the cold air passage (121) for the refrigerator room. At this time, a cold air discharge port (111) may be formed in the above-mentioned refrigerator-side grill fan assembly (1) so that cold air flowing along the cold air passage (121) for the refrigerator room is discharged into the refrigerator room (11).

[0091] In addition, a flow path opening / closing module (60) is provided in at least one part of the above-mentioned refrigerator-measuring grill fan assembly (1) or the above-mentioned connecting flow path section (54). The above-mentioned flow path opening / closing module (60) is configured to selectively block the cold air of the cold air flow path (224) for the freezer room that flows in through the above-mentioned connecting flow path section (54).

[0092] That is, selective cold air supply can be provided to the cold air passage (121) for the refrigerator room of the refrigerator room-measuring grill fan assembly (1) by the above-mentioned opening / closing module (60).

[0093] The above-mentioned Euro opening / closing module (60) may be provided on the cold air inlet side of the above-mentioned cold air flow path (121) for the refrigerator room.

[0094] That is, the refrigerator-side grill fan assembly (1) and the freezer-side grill fan assembly (2) are each manufactured separately and configured to communicate with each other through the connecting passage (54). In particular, since the cold air passage (121) for the refrigerator room of the refrigerator-side grill fan assembly (1) is not equipped with any specific operating elements, it is preferable to install a passage opening / closing module (60) in the refrigerator-side grill fan assembly (1) compared to the connecting passage (54) or the freezer-side grill fan assembly (2).

[0095] At this time, a mounting section (101) that is expanded compared to the connecting section (54) is formed on the cold air inlet side of the cold air passage (121) for the refrigerator, and the passage opening / closing module (60) is provided within the mounting section (101) and configured to selectively block the flow of cold air passing through the mounting section (101).

[0096] The above Euro opening / closing module (60) may be configured to include a damper case (61), an opening / closing damper (62), and a damper operating part (63), as shown in the attached FIG. 8.

[0097] Here, the damper case (61) is installed to block the inside of the mounting section (101) and is formed as a square frame structure with a through hole (61a) formed on the inside, the opening / closing damper (62) is installed inside the damper case (61) and is configured to open / close the through hole (61a), and the damper operating part (63) is configured to operate the opening / closing damper (62).

[0098] At this time, the damper operating part (63) may be a motor, and the opening / closing damper (62) may be formed as a plate that is axially coupled to the motor and rotates to block or open the through hole (61a).

[0099] Of course, although not shown, the above-mentioned Euro opening / closing module (60) may be configured to forcibly block or open the passage through which cold air passes by means of a solenoid or cylinder, and may also be configured with various other structures.

[0100] The freezer-measuring grill fan assembly (2) according to an embodiment of the present invention has two cold air passages (223, 224) that guide the flow of cold air by the operation of each of the two fan modules (230, 240).

[0101] That is, the above-mentioned freezer-side grill fan assembly (2) has a cold air flow path (224) for the freezer room that guides the flow of cold air blown by the freezer fan (231) of the freezer fan module (230), and a cold air flow path (223) for the ice-making room that guides the flow of cold air blown by the ice-making fan (241) of the ice-making fan module (240), each formed therein.

[0102] In particular, the cold air passage (223) for the ice making room is configured to supply cold air to the cold air discharge port (221, 221a, 221b, 222, 222a, 222b) located within the cold air passage (224) for the freezer room through the supply passage (215a, 215b).

[0103] Thus, the freezer-side grill fan assembly (2) of the refrigerator according to the embodiment of the present invention can supply a larger amount of cold air to the freezer (12) through the sharing of cold air between the two cold air passages (223, 224) via the supply passages (215a, 215b), and can also prevent the phenomenon of cold air flowing back into the freezer (12) when the ice-making fan (241) is operated alone.

[0104] Below, an example of the specific structure of the above-mentioned freezer-measuring grill pan assembly (2) will be described in more detail with reference to the attached FIGS. 14 to 23.

[0105] First, the above-mentioned freezer-side grill pan assembly (2) is configured to include a shroud (210) and a grill pan (220).

[0106] The above shroud (210) is a part that forms the rear wall of the freezer-side grill pan assembly (2), and the above grill pan (220) is a part that forms the front wall of the freezer-side grill pan assembly (2).

[0107] The evaporator (40) is located at the rear of the freezer (12) among the rear side walls (rear side walls within the inner case) of the cabinet (10), and the shroud (210) is located in front of the evaporator (40), and the grill pan (220) is located in front of the shroud (220).

[0108] The attached FIGS. 15 to 19 are perspective views, exploded perspective views, and front views seen from each direction to explain a freezer-measuring grill pan assembly of a refrigerator according to an embodiment of the present invention.

[0109] Additionally, the attached FIG. 20 is a front view illustrating the shroud of the freezer-side grill pan assembly of a refrigerator according to an embodiment of the present invention, FIG. 21 is a rear view illustrating the shroud of the freezer-side grill pan assembly of a refrigerator according to an embodiment of the present invention, FIG. 22 is a front view illustrating the grill pan of the freezer-side grill pan assembly of a refrigerator according to an embodiment of the present invention, and FIG. 23 is a rear view illustrating the grill pan of the freezer-side grill pan assembly of a refrigerator according to an embodiment of the present invention.

[0110] As shown in these drawings, a first inlet hole (211a) and a second inlet hole (211b) are formed through the shroud (210).

[0111] The two inlet holes (211a, 211b) are holes formed to allow cold air, which has been heat-exchanged while passing through an evaporator (40) located at the rear of the freezer (12), to flow into the space between the freezer grill fan (220) and the shroud (210).

[0112] A refrigeration fan module (230) is installed in the area where the first inlet hole (211a) is formed on the front surface of the above shroud (210), and an ice-making fan module (240) is installed in the area where the second inlet hole (211b) is formed.

[0113] The above refrigeration fan module (230) is located in the first inlet port (211a), and the above ice-making fan module (240) is located in the second inlet port (211b).

[0114] In particular, the first inlet hole (211a) is located at the upper central portion of the freezer-side grill fan assembly (2), and the second inlet hole (211b) is formed on one side of the first inlet hole (211a). That is, the freezer fan (231) is located at the central portion of the freezer-side grill fan assembly (2), and the ice-making fan (241) is located on one side of the freezer fan (231). Thus, the cold air radiated while rotating along the circumference of the freezer fan (231) by the operation of the freezer fan (231) can be evenly supplied to the entire area within the freezer (12), and the cold air radiated while rotating along the circumference of the ice-making fan (241) can be compressed with directionality toward the side of the freezer-side grill fan assembly (2).

[0115] Additionally, a cold air passage (223) for an ice-making room and a cold air passage (224) for a freezer room are formed, respectively, between the front of the shroud (210) and the back of the grill pan (220).

[0116] The above cold air passage (223) for the ice-making room is a passage that guides cold air flowing between the shroud (210) and the grill fan (220) through the second inlet hole (211b) to flow to the connection part with the cold air duct (51) for the ice-making room, and the above cold air passage (224) for the freezer room is a passage that guides cold air blown by the freezer fan (231) to be discharged to each part of the freezer room (12).

[0117] The above cold air passage (224) for the freezer is formed to surround the circumference of the freezer fan (231) and is configured to guide the flow of cold air radiated while rotating along the circumference of the freezer fan (231), and the above cold air passage (223) for the ice-making room is formed to surround the circumference of the ice-making fan (241) and is configured to guide the flow of cold air radiated while rotating along the circumference of the ice-making fan (241). At this time, the above cold air passage (223) for the ice-making room is formed to be open by penetrating the wall surface on the side adjacent to the ice-making fan (241) among the two side walls of the freezer-side grill fan assembly (2).

[0118] In particular, the cold air passage (223) for the ice-making room and the cold air passage (224) for the freezer room are formed by recessing the back surface of the grill pan (220), and the shroud (210) is formed so as to cover the recessed portion of the grill pan (220) (the portion where the cold air passage for the freezer room and the cold air passage for the ice-making room are formed) by pressing its front surface against the back surface of the grill pan (220).

[0119] Although not illustrated, the above-mentioned cold air passage (224) for the freezer and cold air passage (223) for the ice making room may be formed by recessing the front surface of the shroud (210), or by recessing a portion of the opposing surface between the shroud (210) and the grill pan (220).

[0120] That is, the cold air passage (224) for the freezer and the cold air passage (223) for the ice making room according to an embodiment of the present invention may be formed on at least one of the opposing surfaces between the grill pan (220) and the shroud (210).

[0121] Additionally, the grill pan (220) is provided with an upper wall surface (224a), a lower wall surface (224b), a first side wall surface (224c), and a second side wall surface (224d) by forming a depression in each of the cold air passages (223, 224) (see attached FIG. 18 and FIG. 23).

[0122] The upper wall surface (224a) is the upper wall surface within the cold air passage (224) for the freezer located above the freezer fan (231), the lower wall surface (224b) is the bottom surface within the cold air passage (224) for the freezer located below the freezer fan (231), the first side wall surface (224c) is the side wall surface of the cold air passage (224) for the freezer located on one side of the freezer fan (231), and the second side wall surface (224d) is the other side wall surface of the cold air passage (224) for the freezer located on the other side of the freezer fan (231) and below the ice-making fan (241).

[0123] In particular, a cold air outlet (224e) is formed on the upper wall surface (224a) of the above-mentioned grill pan (220), and the lower end of the connecting channel (54) is connected to the cold air outlet (224e).

[0124] That is, due to the above cold air outlet (224e) and connecting passage section (54), the cold air passage (224) for the freezer room can be connected to the cold air passage (121) for the refrigerator room, and the cold air flowing toward the upper space of the cold air passage (224) for the freezer room can be supplied to the cold air passage (121) for the refrigerator room.

[0125] In addition, the lower wall surface (224b) of the cold air passage (224) for the freezer is formed to gradually slope downward toward the center, and a drain (213) is formed in the portion of the shroud (210) that faces the central portion of the lower wall surface of the cold air passage (224) for the freezer. That is, condensate flowing down along both sides of the side walls (224c, 224d) and the lower wall surface (224b), and condensate generated within the cold air passage (224) for the freezer, flows down to the central portion of the lower wall surface (224b), collects therein, and is discharged to the outside of the freezer-side grill fan assembly (2) through the drain (213). At this time, the discharged condensate falls into a condensate catcher (41) provided at the bottom of the evaporator (40).

[0126] Additionally, the grill pan (220) is formed with a plurality of cold air discharge ports (221, 221a, 221b, 222, 222a, 222b) on the side of the freezer that discharge cold air from the cold air passage (224) for the freezer into the freezer (12).

[0127] The above-mentioned cold air discharge ports (221, 221a, 221b, 222, 222a, 222b) for the freezer room side include a cold air discharge port (221) for the upper space located above the freezer fan (231) and a cold air discharge port (222) for the central space located below the freezer fan (231). That is, cold air flowing above the freezer fan (231) is discharged into the upper space of the freezer room (12) through the cold air discharge port (221) for the upper space, and cold air flowing below the freezer fan (231) is discharged into the central space of the freezer room (12) through the cold air discharge port (222) for the central space.

[0128] At this time, first auxiliary discharge ports (221a, 221b) are formed on each side of the upper space cold air discharge port (221), and second auxiliary discharge ports (222a, 222b) are formed on each side of the central space cold air discharge port (222). This enables sufficient cold air supply to both sides of the upper space and the central space within the freezer (12).

[0129] Additionally, the cold air passage (224) for the freezer and the cold air passage (223) for the ice-making room are separated from each other by the passage ribs (214a, 214b) (shown in FIG. 16). That is, by forming the passage ribs (214a, 214b) protruding from the front of the shroud (210), the cold air passage (224) for the freezer and the cold air passage (223) for the ice-making room can have separate passages. Although not shown, the passage ribs (214a, 214b) may also be formed protruding from the back of the grill pan (220).

[0130] Here, the above-mentioned duct ribs (214a, 214b) protrude from the front of the shroud (210) and form the perimeter wall of the cold air passage (223) for the ice-making room. That is, the cold air introduced through the second inlet hole (211b) is guided along the cold air passage (223) for the ice-making room formed by the above-mentioned duct ribs (214a, 214b) to the connection point with the cold air duct (51) for the ice-making room.

[0131] The above-mentioned uro-ribs (214a, 214b) are configured to include a first circumferential uro-rib (214a) and a second circumferential uro-rib (214b) formed along the circumference of the second inlet hole (211b).

[0132] The area where the second inlet hole (211b) is formed by the two circumferential air passages (214a, 214b) described above can be partitioned from the cold air passage (224) for the freezer, and the cold air passing through the second inlet hole (211b) can be blown to the cold air duct (51) for the ice-making room along the cold air passage (223) for the ice-making room formed by the two air passages (214a, 214b).

[0133] The first circumferential side duct rib (214a) extends downward from the upper surface (210a) of the shroud (210) and is formed to cross between the freezing fan (231) and the ice-making fan (241). At this time, the upper surface (210a) of the shroud (210) forms the upper surface of the freezer-side grill fan assembly (2) together with the upper wall surface (224a) of the grill fan (220), and a portion of the upper surface (210a) of the shroud (210) is configured to guide the flow of cold air while forming the upper wall surface of the cold air duct (223) for the ice-making room.

[0134] In addition, the lower end of the first circumferential duct rib (214a) is formed to be located further lower than the center height of the refrigeration fan (231). That is, as the first circumferential duct rib (214a) is formed to block the space between the ice-making fan module (240) and the refrigeration fan module (230), the cold air radiated along the circumference of the refrigeration fan (231) by the operation of the refrigeration fan (231) is prevented from directly colliding with and interfering with the cold air radiated along the circumference of the ice-making fan (241) by the operation of the ice-making fan (241).

[0135] In particular, the first circumferential duct rib (214a) is formed in a rounded shape to surround a portion of the circumference of one side (the side where the refrigeration fan is located) of the ice-making fan (241). As a result, the cold air radiated in the radial direction of the ice-making fan (241) by the operation of the ice-making fan (241) is guided by the first circumferential duct rib (214a) and flows in the circumferential direction of the ice-making fan (241), allowing it to be smoothly supplied to the communication portion (open portion of the cold air passage for the ice-making room) with the cold air duct (51) for the ice-making room.

[0136] Furthermore, the second circumferential urorib (214b) is positioned between the first circumferential urorib (214a) and the refrigeration fan (231) on the front of the shroud (210), and is formed in a rounded shape to wrap around the lower circumference of the first circumferential urorib (214a). That is, the lower portion from the central portion between the ice-making fan (241) and the refrigeration fan (231) is separated from one another by the second circumferential urorib (214b).

[0137] In addition, the second circumferential channel rib (214b) is formed spaced apart from the first circumferential channel rib (214a), and the spaced portion between the first circumferential channel rib (214a) and the second circumferential channel rib (214b) is provided as an upper supply channel (215a).

[0138] That is, a portion of the cold air flowing along the cold air channel (223) for the ice making room can be supplied to the upper space within the cold air channel (224) for the freezer room through the upper supply channel (215a).

[0139] Thus, when the freezing fan (231) and the ice-making fan (241) operate simultaneously, some of the cold air blown by the ice-making fan (241) is additionally supplied to the freezer room (12) through the upper supply channel (215a), thereby increasing the amount of cold air supplied to the freezer room (12), and thereby enabling rapid temperature control of the freezer room (12).

[0140] Furthermore, if the freezing fan (231) is not operated and only the ice-making fan (241) is operated independently, the pressure on the side of the second inlet port (211b) where the ice-making fan (241) is located becomes relatively lower than the pressure on the side of the first inlet port (211a), and there is a risk that cold air inside the freezer (12) will pass through the cold air passage (224) for the freezer and flow to the area where the evaporator (40) is located through the first inlet port (211a), and then be sucked into the cold air passage (223) for the ice-making room through the second inlet port (211b).

[0141] However, even if the ice-making fan (241) is operated alone by the provision of the upper supply channel (215a) described above, the pressure difference between the two channels (223, 224) is reduced by the sharing of cold air between the cold air channel (224) for the freezer and the cold air channel (223) for the ice-making room, thereby preventing the cold air of the freezer (12) from flowing back into the cold air channel (223) for the ice-making room.

[0142] Additionally, the upper end of the second circumferential duct rib (214b) is formed to be positioned further above the center height of the refrigeration fan (231). This prevents the phenomenon in which cold air radiated in the radial direction of the refrigeration fan (231) by the operation of the refrigeration fan (231) flows back into the upper supply duct (215a) through the cold air discharge side of the upper supply duct (215a), thereby obstructing the discharge of cold air from the upper supply duct (215a).

[0143] In addition, the upper open portion of the upper supply channel (215a) (the upper open portion between the first circumferential channel rib and the second circumferential channel rib) is formed to face the first auxiliary discharge port (221a) on the side adjacent to the ice-making fan (241). That is, the cold air supplied to the cold air channel (224) for the freezer through the upper supply channel (215a) can be discharged directly into the upper space within the freezer (12) through the first auxiliary discharge port (221a) without interfering with the flow of cold air swirling in the cold air channel (224) for the freezer.

[0144] In addition, the wall surface of the upper end portion of the second circumferential duct rib (214b) facing the refrigeration fan (231) is formed to be inclined or rounded so that it gradually becomes adjacent to the refrigeration fan (231) as it extends toward the upper end. That is, the cold air radiated while rotating along the upper circumference of the refrigeration fan (231) by the operation of the refrigeration fan (231) is guided by the second circumferential duct rib (214b) and can be sufficiently supplied to the cold air discharge port (221) for the upper space and the two first auxiliary discharge ports (221a, 221b) located on both sides thereof.

[0145] Meanwhile, the lower end of the second circumferential urorib (214b) is formed to extend beyond the lower circumferential of the first circumferential urorib (214a) and wrap around a portion of the lower circumferential of the ice-making fan (241).

[0146] In addition, the lower end of the second circumferential channel rib (214b) is formed spaced apart from the second side wall surface (224d) formed in the grill pan (220), thereby providing a lower supply channel (215b) between the second circumferential channel rib (214b) and the second side wall surface (224d).

[0147] That is, the amount of cold air supplied to the freezer (12) can be increased by allowing the cold air radiated into the lower space within the cold air passage (223) for the ice room, which is radiated while rotating in the circumferential direction of the ice-making fan (241) by the operation of the ice-making fan (241), to be additionally supplied into the lower space within the cold air passage (224) for the freezer room through the lower supply passage (215b).

[0148] In particular, through the lower supply channel (215b) mentioned above, condensate present in the cold air channel (223) for the ice-making room is discharged, thereby preventing the freezing of the ice-making fan (241) due to the condensate.

[0149] At this time, the condensate discharged into the cold air passage (224) for the freezer through the lower supply passage (215b) is collected at the center of the lower wall surface (224b) inside the cold air passage (224) for the freezer, and then discharged to the outside of the freezer-side grill fan assembly (2) through the drain (213) of the shroud (210).

[0150] Additionally, the cold air passage (223) for the ice-making room is divided into multiple areas based on the positions of the ice-making fan (241) and the perimeter passage ribs (214a, 214b) of the shroud (210).

[0151] That is, the cold air passage (223) for the ice-making room is provided with a first area (223a) provided between the ice-making fan (241) and the first circumferential passage rib (214a), a second area (223b) provided between the ice-making fan (241) and the second circumferential passage rib (214b), and a third area (223c) provided between the ice-making fan (241) and the upper wall surface (224a) of the grill pan (220). In the drawing, each area (223a, 223b, 223c) of the cold air passage (223) for the ice-making room, the cold air passage (223) for the ice-making room, and the cold air passage (224) for the freezer room are illustrated based on the second inlet hole (211b) and the first inlet hole (211a) formed in the shroud (210), as shown in the attached FIG. 20.

[0152] Meanwhile, an insulating member (250) may be further provided in the area on the back of the above-mentioned grill pan (220) where the cold air passage (223) for the ice-making room is located.

[0153] The above-mentioned insulating member (250) is configured to prevent freezing of the ice-making fan (241) and is formed to cover the grill pan side wall of the cold air passage (223) for the ice-making room.

[0154] That is, considering that the cold air recovered into the freezer (12) through the recovery duct (52) for the ice-making room is in a high temperature and high humidity state compared to the cold air present in the freezer (12), there is a high risk of freezing of the ice-making fan (241) located adjacent to the area where the cold air is recovered. Thus, the freezing of the ice-making fan (241) can be prevented by providing the insulation member (250).

[0155] Additionally, a guide (217a) may be formed on the front surface (or the back surface of the grill pan) of the shroud (210).

[0156] These guides (217a) serve to guide the cold air that has entered the cold air passage (224) for the freezer room through the first inlet hole (211a) of the shroud (210) to flow smoothly to the two auxiliary discharge ports (221b, 222b) (auxiliary discharge ports on the opposite side from where the ice-making fan is located when viewed from the perspective of the freezer fan).

[0157] Additionally, the grill pan (220) is provided with suction guides (226a, 226b) that guide the flow of recovered cold air that has flowed through the freezer (12). At this time, the suction guides (226a, 226b) are formed at the lower end of the grill pan (220) so that the cold air recovered after circulating inside the freezer (12) flows into the lower end of the evaporator (40).

[0158] At this time, the suction guides (226a, 226b) are formed to be inclined at an angle (or round) that is the same (or similar) to the wall surface forming the rear bottom of the freezer (12) as they extend toward the lower end. That is, the cold air flowing along the bottom surface inside the freezer (12) is guided by the suction guides (226a, 226b) and flows smoothly to the lower end of the evaporator (40).

[0159] Next, the above-mentioned freezer-measuring grill fan assembly (2) is configured to include a freezer fan module (230) and an ice-making fan module (240).

[0160] The above-mentioned refrigeration fan module (230) is configured to blow cold air that has passed through the evaporator (40) into the cold air passage (224) for the freezer room, and is located at the first inlet hole (211a) of the shroud (210).

[0161] In addition, the above-mentioned refrigeration fan module (230) is configured to include a refrigeration fan (231) and a fan motor (232).

[0162] The above-mentioned refrigeration fan (231) may be formed as a centrifugal fan, and the above-mentioned fan motor (232) is configured to be axially coupled to the refrigeration fan (231) while being fixedly installed on the above-mentioned shroud (210).

[0163] In particular, the above-mentioned refrigeration fan (231) can be used as a type of fan that provides a larger airflow than the ice-making fan (241) to be described later. That is, the above-mentioned refrigeration fan (231) can be a type of fan that is larger in size than the ice-making fan (241), and thus the part of the shroud (210) where the refrigeration fan (231) is installed can be formed in a recess so that a part of the refrigeration fan (231) is positioned to be recessed compared to other parts.

[0164] Additionally, the above ice-making fan module (240) is configured to blow cold air that has passed through the evaporator (40) into the cold air passage (223) for the ice-making room and is located at the second inlet port (211b) of the shroud (210).

[0165] In addition, the above ice-making fan module (240) is configured to include an ice-making fan (241) and a fan motor (242).

[0166] The above ice-making fan (241) may be formed as a centrifugal fan, and the fan motor (242) is configured to be axially coupled to the ice-making fan (241) while fixedly installed on the shroud (210).

[0167] In particular, the ice-making fan (241) can be used as a type of fan capable of pumping cold air over a longer distance than the aforementioned refrigeration fan (231). That is, the ice-making fan (241) can be used as a type of fan with a faster rotational speed than the refrigeration fan (231).

[0168] Meanwhile, the above ice-making fan module (240) is configured to be positioned at a certain distance from the cold air outlet side of the cold air passage (223) for the ice-making room (see attached FIG. 19).

[0169] That is, by positioning the ice-making fan (241) of the ice-making fan module (240) so as to be spaced apart from the cold air outlet side (open part) of the cold air passage (223) for the ice-making room, the cold air passing through the cold air outlet side of the cold air passage (223) for the ice-making room is prevented from passing through the cold air outlet side smoothly and becoming turbulent due to resistance caused by the cold air flow rotating along the rotation direction of the ice-making fan (241).

[0170] In addition, the ice-making fan (241) forming the ice-making fan module (240) is configured to rotate at a higher rotational speed than the refrigeration fan (231) forming the refrigeration fan module (230).

[0171] That is, the above-mentioned freezing fan (231) is rotated at a rotational speed sufficient to provide a high airflow because it supplies cold air to the freezer room (12) in front of it, but the ice making room (21) is located relatively far from the freezer room (12), so the ice making fan (241) is operated at a higher rotational speed than the freezing fan (231) to pump air up to the ice making room (21).

[0172] In addition, the center of the ice-making fan (241) is located lower than the center of the cold air discharge side opening of the cold air passage (223) for the ice-making room.

[0173] That is, considering that the cold air discharged upwards relative to the central portion of the ice-making fan (241) is guided to be supplied to the ice-making room (21) through the cold air passage (223) for the ice-making room, the central portion of the ice-making fan (241) is positioned as low as possible relative to the center of the cold air discharge side (preferably the bottom surface of the cold air discharge side) of the cold air passage (223) for the ice-making room, so that the cold air blown from the ice-making fan (241) can flow smoothly along the cold air passage (223) for the ice-making room.

[0174] In the following, the temperature control process for the freezer compartment (12) and the ice-making compartment (21) of the refrigerator according to the embodiment of the present invention described above will be explained in more detail.

[0175] First, the process for controlling the temperature of the refrigerator room (11) will be explained with reference to the attached FIGS. 24 to 26.

[0176] The temperature control of the above refrigerator room (11) is performed by the operation of the refrigeration fan module (230), the compressor (not shown), and the flow path opening / closing module (60).

[0177] That is, when the Euro opening / closing module (60) operates so that the connecting flow path (54) and the cold air flow path (121) for the refrigerator room are opened to each other, operation for temperature control of the refrigerator room (11) is performed by the rotation of the refrigeration fan (231) by power supply to the refrigeration fan module (230) and the heat exchange operation of the evaporator (40) by the operation of the compressor.

[0178] And, when the refrigeration fan (231) of the refrigeration fan module (230) is operated, the air inside the freezer (12) flows through the evaporator (40) by the air blowing force of the refrigeration fan (231), and heat exchange occurs as it passes through the evaporator (40).

[0179] Additionally, the heat-exchanged air (cold air) passes through the first inlet port (211a) of the shroud (210) and flows into the cold air passage (224) for the freezer.

[0180] The cold air flowing into the cold air passage (224) for the freezer in this way and radiating into the upper space within the cold air passage (224) for the freezer is discharged through the cold air outlet (224e), and the cold air is continuously supplied to the cold air passage (121) for the refrigerator under the guidance of the connecting passage section (54).

[0181] Of course, the remaining cold air that is not discharged through the cold air outlet (224e) among the cold air radiated while rotating along the upper circumference of the freezing fan (231) by the operation of the freezing fan (231) is supplied to the freezing room (12) through the area where the cold air discharge port (221) for the upper space is located within the cold air passage (224) for the freezing room and the two first auxiliary discharge ports (221a, 221b) located on both sides thereof.

[0182] And, the cold air supplied to the cold air passage (121) for the refrigerator room by the above process flows along the cold air passage (121) for the refrigerator room and is supplied into the refrigerator room (11) through the cold air discharge port (111), thereby refrigerating the stored items in the refrigerator room (11).

[0183] Subsequently, the cold air that has refrigerated the contents in the refrigerator room (11) flows to the bottom of the refrigerator room (11) and is recovered to the cold air inlet side of the evaporator (40) through the refrigerator room recovery duct (53) connected to that area, and the recovered cold air passes through the evaporator (40) and then flows into the freezer room side grill fan assembly and is supplied to the refrigerator room, repeating the circulation.

[0184] Meanwhile, when the inside of the refrigerator room (11) reaches a set temperature due to the aforementioned operation, the flow path opening / closing module (60) is operated to block the connecting flow path (54) and the cold air flow path (121) for the refrigerator room from each other, thereby preventing additional cold air supply to the refrigerator room (11).

[0185] That is, when the connecting passage (54) and the cold air passage (121) for the refrigerator are blocked by the above-mentioned passage opening / closing module (60), the cold air blown by the freezing fan (231) is supplied entirely to the freezer (12). Of course, the operation of the freezing fan (231) and the compressor may be controlled to stop when the above-mentioned refrigerator (11) reaches a set temperature.

[0186] Next, the process for controlling the temperature of the freezer (12) will be explained with reference to the attached FIG. 27 and FIG. 28.

[0187] The temperature control of the above-mentioned freezer room (12) is performed by the operation of the freezer fan module (230) and the compressor (not shown). That is, the operation for temperature control of the freezer room (12) is performed by the rotation of the freezer fan (231) by power supply to the freezer fan module (230) and the heat exchange operation of the evaporator (40) by the operation of the compressor. At this time, the flow path opening / closing module (60) is operated to block the connection flow path section (54) and the cold air flow path (121) for the refrigerator room.

[0188] And, when the refrigeration fan (231) of the refrigeration fan module (230) is operated, the air inside the freezer (12) flows through the evaporator (40) by the air blowing force of the refrigeration fan (231), and heat exchange occurs as it passes through the evaporator (40).

[0189] Additionally, the heat-exchanged air (cold air) passes through the first inlet port (211a) of the shroud (210) and flows into the cold air passage (224) for the freezer.

[0190] Among the cold air flowing into the cold air passage (224) for the freezer, the cold air that is rotated and radiated along the upper circumference of the freezer fan (231) by the operation of the freezer fan (231) flows to the area where the cold air discharge port (221) for the upper space of the grill fan (220) and the two first auxiliary discharge ports (221a, 221b) are located, and then is discharged into the upper space inside the freezer (12) through each of the discharge ports (221, 221a, 221b).

[0191] In particular, the cold air radiated while rotating along the upper circumference of the above-mentioned freezing fan (231) is sufficiently supplied toward the first auxiliary discharge port (221a, 221b) on the side where the ice-making fan (241) is located due to the first circumference-side duct rib (214a), thereby allowing sufficient cold air to be supplied to both sides as well as the center of the upper space within the freezer room (12).

[0192] At the same time, among the cold air flowing into the cold air passage (224) for the freezer, the cold air that is rotated and radiated along the lower circumference of the freezer fan (231) by the operation of the freezer fan (231) flows along the lower wall surface (bottom surface) (224b) within the cold air passage (224) for the freezer and is discharged into the central space of the freezer (12) through the cold air discharge port (222) for the central space of the grill fan (220) and the two second auxiliary discharge ports (222a, 222b).

[0193] Then, the cold air supplied to the upper and central spaces within the two freezer rooms (12) by passing through each cold air discharge port (221, 221a, 221b, 222, 222a, 222b) flows through the two freezer rooms (12) and is then guided by the two suction guides (226a, 226b) formed in the grill fan (220) and is recovered to the air inlet side of the evaporator (40). The cold air recovered in this way passes through the evaporator (40) and then flows into the freezer room side grill fan assembly (2) and is supplied to the freezer room (12), repeating the circulation.

[0194] Meanwhile, while temperature control for the aforementioned freezer (12) is being performed, the ice-making fan (241) may also be operated.

[0195] That is, considering that the ice-making fan (241) is set to operate at all times except under special conditions (e.g., when the ice-making room is full of ice), continuous ice-making operation can be performed even while refrigeration operation is being performed.

[0196] If an ice-making operation is also performed while a refrigeration operation is being performed, a flow of cold air is generated by the operation of the ice-making fan (241) that sequentially passes through the second inlet port (211b) and the cold air passage (223) for the ice-making room.

[0197] In particular, the cold air generated by the operation of the above-mentioned ice-making fan (241) is partially supplied to the cold air passage (224) for the freezer room through the upper supply passage (215a), and the remainder is supplied to the ice-making room (21) through the cold air duct (51) for the ice-making room connected to the cold air passage (223) for the ice-making room.

[0198] That is, cold air blown through the second inlet port (211b) to the first area (223a) of the cold air passage (223) for the ice room passes through the upper supply passage (215a) and is supplied to the upper space within the cold air passage (224) for the freezer room, cold air blown through the second inlet port (211b) to the second area (223b) of the cold air passage (223) for the ice room passes through the lower supply passage (215b) and is supplied to the lower space within the cold air passage (224) for the freezer room, and cold air blown through the second inlet port (211b) to the third area (223c) of the cold air passage (223) for the ice room passes through the second inlet port (211b) is supplied to the ice room (21) through the cold air duct (51) for the ice room connected to the cold air discharge side of the cold air passage (223) for the ice room.

[0199] Thus, since not only the cold air blown by the operation of the freezing fan (231) but also a portion of the cold air blown by the operation of the ice-making fan (241) is supplied into the freezer (12), sufficient cold air supply can be achieved. This is as illustrated in the attached FIG. 29.

[0200] In particular, the cold air supplied to the cold air passage (223) for the freezer through the upper supply passage (215a) is directly discharged toward the first auxiliary discharge port (221a) on one side of the upper space within the cold air passage (224) for the freezer, so it is supplied into the freezer (12) together with the cold air through the first auxiliary discharge port (221a) without interfering with the flow of cold air flowing within the cold air passage (223) for the freezer, and the cold air supplied to the cold air passage (223) for the freezer through the lower supply passage (215b) is directly discharged toward the second auxiliary discharge port (222a) on one side of the lower space within the cold air passage (223) for the freezer, so it is supplied into the freezer (12) together with the cold air through the second auxiliary discharge port (222a) without interfering with the flow of cold air flowing within the cold air passage (223) for the freezer It is supplied into the freezer (12).

[0201] Thus, sufficient cold air can be supplied to the above-mentioned freezer (12).

[0202] Meanwhile, during the operation of refrigeration in the refrigerator room (11), ice making in the ice room (21), or freezing in the freezer room (12), condensation is generated in the ice making room cold air duct (51) due to the temperature difference between each space (refrigeration room and ice making room cold air passage), and the generated condensation accumulates on the bottom surface of the ice making room cold air passage (223) along the ice making room cold air duct (51).

[0203] However, since a lower supply channel (215b) is formed on the bottom surface of the cold air channel (223) for the ice-making room, the condensate flows down through the lower supply channel (215b) to the lower wall surface (bottom surface) (224b) within the cold air channel (223) for the freezer room, and then is discharged to the outside of the freezer-side grill fan assembly (2) through the drain (213) formed in the shroud (210). At this time, the discharged condensate falls into a condensate catcher (41) provided at the bottom of the evaporator (40).

[0204] Therefore, freezing and malfunction of the ice-making fan (241) due to the above-mentioned condensate are prevented.

[0205] In particular, the above ice-making fan (241) is directly affected by high temperature (higher temperature than the freezer temperature) and humid cold air that is recovered into the freezer (12) through the recovery duct (52) for the ice-making room due to its installation location, but the phenomenon of condensation is prevented by the insulation member (250), and even if condensation is generated, it is discharged into the cold air passage (224) for the freezer room through the lower supply passage (215b), so freezing is prevented.

[0206] Next, the operation (ice-making operation) for temperature control of the ice-making room (21) will be explained with reference to the attached FIGS. 30 to 32.

[0207] The temperature control of the above ice-making room (21) is performed by the operation of the ice-making fan (241) by supplying power to the ice-making fan module (240). At this time, the compressor may be operated or stopped depending on the operating conditions of the freezer room (12).

[0208] When the above ice-making fan (241) is operated, the air present in the freezer (12) passes through the evaporator (40) by the air blowing force of the above ice-making fan (241), then passes through the second inlet hole (211b) of the shroud (210) and flows into the first area (223a), the second area (223b), and the third area (223c) of the cold air passage (223) for the ice-making room, respectively, and is subsequently discharged from the cold air passage (223) for the ice-making room through the connecting parts with each of the areas (223a, 223b, 223c). This is as illustrated in the attached FIG. 30.

[0209] Cold air introduced into the first area (223a) by the operation of the above ice-making fan (241) passes through the upper supply channel (215a) and is supplied to the upper wall surface (224a) within the cold air channel (224) for the freezer, cold air blown into the second area (223b) is supplied to the lower wall surface (224b) within the cold air channel (224) for the freezer through the lower supply channel (215b), and cold air blown into the third area (223c) is supplied to the ice-making room (21) through the cold air duct (51) for the ice-making room.

[0210] At the same time, cold air supplied to the cold air passage (224) for the freezer room by passing through the upper supply passage (215a) is blown toward the first auxiliary discharge port (221a) within the cold air passage (224) for the freezer room and is supplied to the upper space within the freezer room (12) through the first auxiliary discharge port (221a), and cold air supplied to the cold air passage (224) for the freezer room by passing through the lower supply passage (215b) is supplied to the central space within the freezer room (12) through the second auxiliary discharge port (222a).

[0211] In particular, the cold air supplied into the cold air passage (223) for the ice-making room by the blowing force of the ice-making fan (241) after passing through the second inlet port (211b) is discharged to the third area (223c), which is the upper part of the ice-making fan (241), and then flows along the cold air passage (223) for the ice-making room toward the cold air discharge side. At this time, since the cold air flows along a sufficient distance from the third area (223c) toward the cold air discharge side, the flow resistance caused by the third area (223c) and the cold air discharge side being adjacent to each other can be reduced.

[0212] Accordingly, the interior of the freezer (12) maintains a pressure state similar to that of the cold air passage (223) for the ice-making room by the cold air supplied through the upper supply passage (215a) and the lower supply passage (215b). That is, since the pressure of the freezer (12) and the ice-making room (21) is roughly balanced, even if only the ice-making fan (241) is operated for ice-making operation, the cold air of the freezer (12) is prevented (or minimized) from passing through the cold air passage (224) for the freezer room and the first inlet port (211a) in reverse and flowing into the second inlet port (211b) and the cold air passage (223) for the ice-making room.

[0213] And, the cold air supplied to the ice-making room (21) flows through the ice-making room (21) and freezes the water (or other beverage) present in the ice tray (city omitted).

[0214] Then, the cold air flowing through the ice-making room (21) flows into the ice-making room recovery duct (52) and is continuously recovered into the freezer room (12) under the guidance of the ice-making room recovery duct (52).

[0215] Afterwards, the cold air recovered into the above-mentioned freezer (12) is immediately sucked into the first suction guide (226a) positioned opposite it and recovered to the air inlet side of the evaporator (40).

[0216] Accordingly, the temperature inside the ice-making room (21) is controlled by the repetitive circulation of the aforementioned air (cold air).

[0217] Ultimately, the refrigerator of the present invention can partially supply cold air from the cold air passage (223) for the ice-making room to the cold air passage (224) for the freezer room by providing each supply passage (215a, 215b), and thus, even though there is only one evaporator (40), sufficient cold air can be supplied to the freezer room (12) even if the freezer fan (231) and the ice-making fan (241) operate simultaneously, and the phenomenon of cold air flowing back from the freezer room (12) when the ice-making fan (241) operates alone can be prevented.

[0218] In addition, the refrigerator of the present invention is configured such that each supply channel (215a, 215b) is directed directly toward each auxiliary discharge port (221a, 222a), thereby ensuring that the cold air provided from the cold air channel (223) for the ice-making room through each supply channel (215a, 215b) does not interfere with the flow of cold air flowing through the cold air channel (224) for the freezer room.

[0219] In addition, since the refrigerator of the present invention has a lower supply channel (215b) formed on the bottom surface (second circumferential channel rib) of the installation area of ​​the ice-making fan module (240), sufficient cold air can be supplied to the lower compartment within the freezer (12), and since condensate can be drained through the lower supply channel (215b), the freezing phenomenon of the ice-making fan (241) can be prevented.

[0220] In addition, the refrigerator of the present invention is configured to supply cold air to the cold air passage (121) for the refrigerator room of the grill fan assembly (1) for the refrigerator room through a cold air outlet (224e) formed on the upper wall surface (224a) of the cold air passage (224) for the freezer room and a connecting passage part (54) connected thereto, so selective supply of cold air to the refrigerator room (11), the freezer room (12), and the ice room (21) is possible with a single evaporator (40).

[0221] Meanwhile, the refrigerator of the present invention is not limited only to the structure of the aforementioned embodiment.

[0222] For example, the refrigeration fan module (230) and the ice-making fan module (240) of the freezer-side grill fan assembly (2) may be formed as slim centrifugal fans with a motor provided inside the hub of the refrigeration fan (231) and the ice-making fan (241), as shown in the attached FIGS. 33 to 35.

[0223] That is, it can be configured so that the thickness of the product (refrigerator) is reduced by the distance protruding to the rear side of the freezer-side grill fan assembly (2) due to the fan motor (232, 242), or additional capacity of the freezer (12) can be secured.

[0224] Thus, each fan module (230, 240) constituting the refrigerator of the present invention can be changed to other types and used. Explanation of the symbols

[0225] 1. Refrigerator compartment grill pan assembly 2. Freezer compartment grill pan assembly 10. Cabinet 10a. Outcase 10b. Inner case for refrigerator 10c. Inner case for freezer 10d. Partition wall 11. Refrigerator compartment 12. Freezer 15. Machine room 20a. First refrigerator door 20b. Second refrigerator door 21. Ice-making room 21a. Supply guide duct 21b. Recovery guide duct 30. Freezer door 40. Evaporator 51. Cold air duct for ice room 52. Return duct for ice maker 53. Return duct for refrigerator maker 54. Connecting Euro section 60. Euro opening / closing module 61. Damper case 61a. Through hole 62. Opening / closing damper 63. Damper operating part 101. Mounting section 111, cold air outlet 121. Cold air passage for refrigerator 210. Shroud 210a. Upper surface 211a. First inlet hole 211b. Second Inlet 213. Drain 214a. First circumferential groove rib 214b. Second circumferential groove rib 215a. Upper supply channel 215b. Lower supply channel 223a. Area 1 223b. Area 2 223c. Area 3 217a. Guide 220. Grill pan 221. Cold air outlet for upper space 221a, 221b. First auxiliary discharge port 222. Cold air discharge port for central space 222a, 222b. First auxiliary discharge port 223. Cold air flow path for ice making room 224. Cold air passage for freezer 224a. Upper wall surface 224b. Lower wall surface 224c. First side wall surface 224d. Second side wall 224e. Cold air outlet 226a. First inhalation guide 226b. Second inhalation guide 230. Freezing fan module 231. Freezing fan 232. Fan motor 240. Ice-making fan module 241. Ice-making fan 242. Fan motor 250. Insulating material

Claims

Claim 1 A cabinet having an upper refrigerator compartment and a lower freezer compartment; a refrigerator door that opens and closes the refrigerator compartment of the cabinet and has an ice-making compartment; an evaporator provided within the freezer compartment of the cabinet and generating cold air; a freezer-side grill fan assembly located in front of the evaporator, wherein a cold air passage for the freezer compartment is formed to guide the flow of cold air blown by the freezer fan and a cold air passage for the ice-making compartment is formed to guide the flow of cold air blown by the ice-making fan and a cold air passage for the ice-making compartment is formed to guide the flow of cold air blown by the ice-making fan and a plurality of freezer-side cold air discharge ports are formed in the portion of the cold air passage for the freezer compartment that is above the freezer fan to discharge cold air flowing along the cold air passage for the freezer compartment into the freezer compartment; and a refrigerator-side grill fan assembly provided in the refrigerator compartment of the cabinet and selectively receiving a portion of the cold air flowing along the cold air passage for the freezer compartment and guiding it to be supplied to the refrigerator compartment; wherein the freezer-side A refrigerator characterized in that the grill fan assembly is provided with an upper supply channel formed such that a portion of the cold air flowing along the cold air channel for the ice-making room is supplied toward a cold air discharge port on the freezer side, which is positioned to communicate with an upper space within the cold air channel for the freezer room. Claim 2 A refrigerator according to claim 1, wherein the freezer-side grill fan assembly has a grill fan forming a front wall surface and a shroud forming a rear wall surface on which a freezer fan and an ice-making fan are installed, and wherein the cold air passage for the freezer and the cold air passage for the ice-making room are formed on at least one of the opposing surfaces between the grill fan and the shroud. Claim 3 A refrigerator according to claim 1, characterized in that the freezer-side grill fan assembly has a cold air outlet formed therein that is open to communicate with a part of the cold air passage for the freezer, and the cold air outlet and the refrigerator-side grill fan assembly are connected by a connecting passage capable of transferring cold air. Claim 4 A refrigerator according to claim 3, characterized in that the cold air outlet is formed to be located directly above the freezer fan on the upper surface of the freezer-side grill fan assembly. Claim 5 A refrigerator according to claim 3, wherein the refrigerator-side grill fan assembly is configured to receive cold air from the freezer-side grill fan assembly through a connecting passage, and at least one part of the refrigerator-side grill fan assembly or the connecting passage is provided with a passage opening / closing module that selectively blocks the cold air of the cold air passage for the freezer room flowing in through the connecting passage. Claim 6 A refrigerator according to claim 5, characterized in that the above-mentioned grill fan assembly for the refrigerator compartment is provided with a cold air passage for the refrigerator compartment that guides the flow of cold air while being connected to the above-mentioned connecting passage, and the above-mentioned passage opening / closing module is provided on the cold air inlet side of the above-mentioned cold air passage for the refrigerator compartment. Claim 7 A refrigerator according to claim 1, characterized in that the freezing fan is used as a type of fan that provides a greater volume of air than the ice-making fan. Claim 8 A refrigerator according to claim 1, wherein the freezing fan is positioned at the central portion of the freezer-side grill fan assembly, and the cold air passage for the freezer is formed to guide the flow of cold air radiated while rotating along the circumference of the freezing fan, and the ice-making fan is positioned at one side of the freezing fan, and the cold air passage for the ice-making fan is formed to guide the flow of cold air radiated while rotating along the circumference of the ice-making fan. Claim 9 A refrigerator according to claim 8, characterized in that the cold air passage for the ice-making chamber is formed to penetrate the wall adjacent to the side where the ice-making fan is located, based on the freezer fan, among the two side walls of the freezer-side grill fan assembly. Claim 10 A refrigerator according to claim 8, characterized in that the cold air passage for the freezer and the cold air passage for the ice-making room are formed to be separated from each other by a passage rib. Claim 11 A refrigerator according to claim 10, characterized in that the above-mentioned fluororibs are configured to include a first perimeter fluororib that extends downward from the upper surface of the freezer-side grill fan assembly and is positioned between the freezer fan and the ice-making fan, and is formed roundly to surround the upper perimeter of the ice-making fan, and a second perimeter fluororib that is positioned between the first perimeter fluororib and the freezer fan and is formed roundly to surround the lower perimeter of the first perimeter fluororib. Claim 12 A refrigerator according to claim 11, characterized in that the upper end of the second circumferential Eurorib is formed to be located further above the center height of the freezer fan. Claim 13 A refrigerator according to claim 11, characterized in that the second circumferential flow path is formed spaced apart from the first circumferential flow path, and the upper supply flow path is formed as a spaced portion between the two circumferential flow paths and is open vertically. Claim 14 A refrigerator according to claim 13, characterized in that the upper open portion of the upper supply channel is formed to face toward one of the cold air discharge ports on the freezer side. Claim 15 A refrigerator according to claim 13, characterized in that the wall surface facing the freezer fan among the upper end portions of the second circumferential side Eurorib is formed to be inclined or rounded so as to gradually become adjacent to the freezer fan as it extends toward the upper end. Claim 16 A refrigerator according to claim 1, characterized in that the freezer-side grill fan assembly further has a lower supply channel formed therein for supplying a portion of the cold air flowing along the cold air channel for the ice-making room toward another freezer-side cold air discharge port positioned to communicate with the lower space within the cold air channel for the freezer room. Claim 17 A refrigerator according to claim 16, wherein the freezer-side grill fan assembly comprises a grill fan forming a front wall and a shroud forming a rear wall on which a freezer fan and an ice-making fan are installed, wherein the cold air passage for the freezer and the cold air passage for the ice-making room are formed by recessing the rear surface of the grill fan, and the lower supply passage is formed to discharge cold air toward one side wall of the recessed portion of the rear surface of the grill fan. Claim 18 A refrigerator according to claim 17, characterized in that the bottom surface within the recessed portion of the back surface of the grill pan is formed to slope downward toward the center, and the shroud has a drain formed therein that communicates with the central portion of the bottom surface within the recessed portion. Claim 19 A refrigerator according to claim 1, characterized in that the cabinet further comprises a recovery duct for a refrigerator room that recovers cold air within the refrigerator room to the cold air inlet side of the evaporator. Claim 20 A refrigerator according to claim 19, characterized in that one end of the return duct for the refrigerator room is connected to the lower end of the refrigerator room among the rear surfaces of the cabinet, and the other end of the return duct for the refrigerator room is connected to the cold air inlet side of the evaporator located within the freezer room among the rear surfaces of the cabinet.

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