Enterance refrigerator

Abstract

A refrigerator for an entrance according to an embodiment of the present invention includes a fire-prevention means placed on the floor of a machine room, and the fire-prevention means may include a shield plate placed on the floor of the machine room, an interconnect and a screw connecting the shield plate and the front of the machine room, and a spring placed between the shield plate and the front of the machine room to apply pressure to the shield plate.

Description

Technology Field

[0001] The present invention relates to a refrigerator for an entrance hall. Background Technology

[0002] Recently, delivery services that deliver goods to designated locations have become increasingly popular. In particular, when the goods are fresh food items, delivery vehicles are equipped with refrigerators or warming cabinets to store and deliver the food, ensuring it does not spoil or cool down.

[0003] Food is typically delivered in packaging that maintains a cooled or warm state. However, these packaging materials are composed of environmentally polluting substances such as styrofoam, and recently, there has been a growing social trend to reduce their usage.

[0004] On the other hand, if the user is at home at the time of delivery, the delivery person and the user can meet in person to receive the food; however, if the user is not at home or if the delivery time is too early or too late, it is difficult for the delivery person and the user to meet in person to receive the food.

[0005] Therefore, there is a need for food to be delivered without direct face-to-face interaction between the delivery person and the user, and for the food to remain warm and unspoiled until it is finally delivered to the user.

[0006] To address this, a product has recently been introduced in which a refrigerator is installed at the entrance (front door) of a designated location, allowing delivery personnel to store food in the refrigerator to maintain its freshness and enabling users to access the refrigerator at a convenient time to receive the food.

[0007] The following prior art discloses a refrigerator for an entrance that is mounted on an entrance door.

[0008] Entrance refrigerators mounted on the front door have the disadvantage of being vulnerable to fires occurring outdoors because they are installed by penetrating the door.

[0009] Therefore, in the event of a fire occurring outdoors, fire-resistant means or fireproof means are required to effectively block flames from entering the indoor space through the entrance refrigerator. Prior art literature

[0010] Prior Art: Korean Published Patent No. 2011-0033394 (March 31, 2011) The problem to be solved

[0011] The present invention aims to provide a refrigerator for an entrance equipped with a fire-prevention means that can minimize the phenomenon of flames and smoke generated outdoors entering the indoor space through the refrigerator when a fire occurs outdoors.

[0012] In particular, the purpose is to provide a refrigerator for an entrance equipped with a fire prevention means that prevents flames from being visible through the indoor air intake / exhaust port provided in the refrigerator for the entrance in the event of a fire occurring from the outside. means of solving the problem

[0013] A refrigerator for an entrance hall according to an embodiment of the present invention for achieving the above-mentioned purpose is a refrigerator for an entrance hall installed through an entrance door comprising an inner cover exposed to the interior, an outer cover exposed to the exterior, and a fireproof layer formed between the inner cover and the outer cover, and the refrigerator for an entrance hall comprises: a cabinet in which the front is exposed to the exterior and the rear is exposed to the interior, and a space is formed inside; a mullion in which a hole of a predetermined size is formed, dividing the space into an upper storage room and a lower machine room; and a cold air supply module mounted in the hole. and includes a fire prevention means installed on the floor of the machine room, wherein an intake grille and an exhaust grille are formed on the floor of the machine room, and the fire prevention means includes a shield plate placed on the floor of the machine room and having an intake grille and an exhaust grille formed thereon, a connecting member that directly or indirectly connects the shield plate to the front of the machine room, and a spring interposed in a compressed state between the front of the shield plate and the front of the machine room, wherein when the spring is in a compressed state, the intake grille and exhaust grille of the floor of the machine room communicate with the intake grille and exhaust grille of the shield plate, respectively, and the intake grille and exhaust grille of the floor of the machine room and the intake grille and exhaust grille of the shield plate each include a plurality of slits, wherein the plurality of slits are spaced apart in the front-rear direction of the cabinet, and the connecting member includes an interconnector whose front end contacts the front of the machine room and whose rear end contacts the front of the shield plate, an outer screw that penetrates the inner cover and is inserted into the interconnector, and the front of the shield plate It includes an inner screw that penetrates and is inserted into the interconnect.

[0014] delete

[0015] delete

[0016] delete Effects of the invention

[0017] According to the refrigerator for the entrance hall according to the embodiment of the present invention having the above-described configuration, the following effects are achieved.

[0018] First, if a fire occurs outdoors and the front door heats up to a high temperature, the indoor air intake and exhaust vents equipped in the front door refrigerator are automatically sealed, effectively blocking flames and smoke from entering the interior. As a result, it is possible to prevent occupants from suffocating due to smoke or the fire from spreading indoors.

[0019] Second, since the indoor air intake and exhaust port equipped in the aforementioned entrance refrigerator is automatically sealed, air containing oxygen present indoors cannot enter the interior of the entrance refrigerator, thereby having the advantage of minimizing the phenomenon of flames entering from the outside and spreading indoors. Brief explanation of the drawing

[0020] FIG. 1 is a perspective view of an entrance refrigerator according to an embodiment of the present invention mounted on an entrance door, viewed from the outside. FIG. 2 is a perspective view of the above-mentioned refrigerator for the entrance hall as seen from inside. FIG. 3 is an exploded perspective view of the above-mentioned refrigerator for the entrance. FIG. 4 is a side cross-sectional view of the above-mentioned refrigerator for the entrance, cut along 4-4 ​​of FIG. 2. FIG. 5 is a front cross-sectional view of the above-mentioned refrigerator for the entrance, cut along 5-5 of FIG. 2. FIG. 6 is a perspective view of a cold air supply assembly provided in a refrigerator for an entrance hall according to an embodiment of the present invention. FIG. 7 is an exploded perspective view of the above cold air supply assembly. FIG. 8 is a cross-sectional cutaway perspective view of a refrigerator for an entrance according to an embodiment of the present invention, cut along 8-8 of FIG. 2. FIG. 9 is an exploded view of a refrigerator for an entrance equipped with a fire-prevention means according to an embodiment of the present invention. FIG. 10 is a cross-sectional view of a refrigerator for an entrance cut along 10-10 of FIG. 8. FIG. 11 is a rear perspective view of a shield plate constituting a fire-prevention means according to an embodiment of the present invention. FIG. 12 is a cut-out perspective view of a shield plate cut along 12-12 of FIG. 11. FIG. 13 is a planar perspective view of a suction guide constituting a fire-prevention means according to an embodiment of the present invention. FIG. 14 is a bottom perspective view of the suction guide. FIG. 15 is a longitudinal cross-sectional perspective view of a refrigerator for an entrance, cut along 15-15 of FIG. 8. FIG. 16 is a side cross-sectional view of a refrigerator for an entrance, cut along 16-16 of FIG. 8 in a state where no fire occurs. FIG. 17 is a side cross-sectional view of a refrigerator for an entrance, cut along 16-16 of FIG. 8 in a fire condition. Specific details for implementing the invention

[0021] Hereinafter, a refrigerator for an entrance hall according to an embodiment of the present invention will be described in detail with reference to the drawings.

[0022] FIG. 1 is a perspective view of an entrance refrigerator according to an embodiment of the present invention mounted on an entrance door, viewed from the outside; FIG. 2 is a perspective view of the entrance refrigerator, viewed from the inside; FIG. 3 is an exploded perspective view of the entrance refrigerator; FIG. 4 is a side cross-sectional view of the entrance refrigerator cut along 4-4 ​​of FIG. 2; and FIG. 5 is a front cross-sectional view of the entrance refrigerator cut along 5-5 of FIG. 2.

[0023] Referring to FIGS. 1 to 5, the entrance door (40) on which the entrance refrigerator (10) according to an embodiment of the present invention is mounted may include an inner cover (41) exposed to the interior, an outer cover (42) exposed to the exterior, and a fireproof layer (43) interposed between the inner cover (41) and the outer cover (42).

[0024] In detail, a refrigerator (10) for an entrance according to an embodiment of the present invention may include a cabinet (11) in which a storage room (101) and a machine room (102) are partitioned and formed inside, an outer door (12) coupled to one side of the cabinet (11), an inner door (13) coupled to the other side of the cabinet (11), and a cold air supply assembly (A) coupled to the lower side of the cabinet (11).

[0025] In detail, the above-described entrance refrigerator (10) may include a cushioning member (or sealing member) that surrounds the outer surface of the cabinet (11).

[0026] The above buffer member may include an external buffer member (14) and an internal buffer member (15).

[0027] The above external cushioning member (14) is wrapped around the outer surface of the cabinet (11) that is exposed to the outside and is in close contact with the front surface of the outer cover (42).

[0028] The above internal cushioning member (15) is wrapped around the outer surface of the cabinet (11) exposed to the interior and is in close contact with the back surface of the inner case (42).

[0029] Here, the horizontal end of the cabinet (11) to which the outer door (12) is attached is defined as the front end of the entrance refrigerator (10), and the horizontal end of the cabinet (11) to which the inner door (13) is attached can be defined as the rear end of the entrance refrigerator (10).

[0030] A through hole is formed in the above-mentioned entrance door (40) through which the above-mentioned cabinet (11) passes, and a door bracket may be mounted on the edge of the through hole. The door bracket connects the outer cover (42) and the inner cover (41) to prevent the members provided in the fireproof layer (43) from falling to the outside through the through hole.

[0031] The cushioning members (14, 15) are formed in the shape of a ring that surrounds the outer surface of the cabinet (11) and can be fitted into the edge of the opening of the entrance door. The impact generated when closing the entrance door is absorbed as much as possible by the cushioning members (14, 15), thereby minimizing damage to the cabinet (11). Furthermore, the gap between the cabinet (11) and the through hole is blocked by the cushioning members (14, 15), so that smoke can be prevented from entering the room in the event of a fire.

[0032] The front end of the cabinet (11) may be installed to protrude a predetermined distance (L1) from the front of the entrance door, but the front end of the cabinet (11) and the front of the entrance door may also be installed to form the same vertical plane.

[0033] The rear end of the cabinet (11) can be installed to protrude a predetermined distance (L2) from the rear of the entrance door.

[0034] The front surface of the outer door (12) may be flush with the front surface of the cabinet (11), or may be spaced forward from the front surface of the cabinet (11) by the thickness of the outer door (12).

[0035] The front of the inner door (13), like the outer door (12), may be in the same plane as the rear of the cabinet (11) and may be spaced rearward from the rear of the cabinet (11) by the thickness of the inner door (12).

[0036] Meanwhile, the cabinet (11) may include an outer case (111), an inner case (112) placed inside the outer case (111), and an insulating material (113) filled between the outer case (111) and the inner case (112).

[0037] A storage room (101) can be defined inside the cabinet (11) by the inner case (112) above.

[0038] Additionally, the cabinet (11) may include an upper surface, left and right side sections extending downward from the left and right ends of the upper surface, and a bottom section or mullion connecting the left and right side sections. The bottom section may extend horizontally at a point spaced upward from the bottom of the left and right side sections.

[0039] Additionally, a bottom cover (18) is installed at the bottom of the left side and right side, and a predetermined space may be formed by the bottom, the bottom cover (18), and the left side and right side. The predetermined space may be defined as a machine room (102).

[0040] The cabinet (11) can be understood as having a configuration that includes the machine room (102). Also, the storage room (101) and the machine room (102) can be understood as being partitioned by the floor portion.

[0041] A bottom hole (111) is formed in the bottom portion of the cabinet (11), and a cold air supply module, which will be described later, is inserted into the bottom hole (111).

[0042] One or more control boxes (19) are installed inside the machine room, and a PCB (20) may be installed inside the control box (19). This embodiment shows that one control box (19) is installed on the left side and one on the right side of the machine room (102).

[0043] The above-mentioned outer door (12) may include a door body (121) and a door liner (122). The back surface of the door body (121) is in close contact with the front surface of the cabinet (11), and the door liner (122) may protrude from the back surface of the door body (121).

[0044] In detail, the edge of the door liner (122) is spaced apart from the back edge of the door body (121), and when the outer door (12) is closed, the door liner (122) is received inside the storage room (101).

[0045] The lower portion of the door liner (122) may be spaced upward by a predetermined length from the lower portion of the door body (121). The horizontal plane passing through the lower portion of the door liner (122) may be designed to be higher by a set length (h) than the horizontal plane passing through the top of the tray (17) when the tray (17) is placed in the storage room (101). Then, not only can the flow of cold air rising along the side of the tray (17) be facilitated, but the phenomenon of interference between the front portion of the tray (17) and the lower portion of the door liner (122) when the outer door (12) is closed can also be prevented.

[0046] The inner door (13) may also include a door body (131) and a door liner (132), just like the outer door (12), and the bottom of the door liner (132) may be designed to be higher than the top of the tray (17) by a set length (h).

[0047] Meanwhile, a pantry duct (16) and a tray (17) may be accommodated inside the storage room (101). The pantry duct (16) may be placed on the bottom surface of the storage room (101), and the tray (17) may be placed on the top surface of the pantry duct (16).

[0048] A loading space may be formed on the inside of the tray (17) so that delivery items can be placed in the tray (17). That is, the tray (17) may include a bottom portion and a side wall extending upward from the edge of the bottom portion, and legs may extend from each of the bottom corners of the bottom portion. By means of the legs, the bottom portion of the tray (17) and the upper surface of the pantry duct (16) may be separated.

[0049] Additionally, at least one of the bottom and side walls of the tray (17) may have a plurality of openings for cold air passage, but is not limited thereto.

[0050] The bottom cover (18) may consist of a bottom portion (181) defining the bottom surface of the machine room (102) and a vertical portion (182) defining the rear surface of the machine room (102). An intake grille (183: see FIG. 9) is formed in the center of the bottom portion (181) of the bottom cover (18) to allow indoor air to flow into the machine room (102). Discharge grilles (184: see FIG. 9) are formed on the left and right sides of the intake grille (181) to allow air that has been heated by heat exchange with the cold air supply assembly (A) to be discharged into the room.

[0051] The front of the machine room (102) may be defined by a front bracket (44). Specifically, the front bracket (44) may be formed in the shape of a rectangular plate, and a cabinet through-hole through which the cabinet (11) passes may be formed on the inside.

[0052] And, the length from the top of the front bracket (44) to the top of the cabinet through-hole can be formed to be shorter than the length from the bottom of the front bracket (44) to the bottom of the cabinet through-hole.

[0053] In addition, the length from the left edge of the front bracket (44) to the left edge of the cabinet through-hole and the length from the right edge of the front cabinet (21) to the right edge of the cabinet through-hole can be designed to be the same. Also, the edge of the front bracket (44) can be surrounded by the external cushioning member (15).

[0054] The lower part of the front bracket (44), that is, the plate portion extending from the lower part of the cabinet through-hole to the lower part of the front bracket (44), is in close contact with the back surface of the entrance door (40) to define the front of the machine room (102).

[0055] However, the bottom cover (18) may be formed in a U-shape to define the front, bottom, and rear of the machine room (102).

[0056] Alternatively, it is also possible to design the front, rear, left, right, and bottom surfaces of the machine room (102), excluding the top surface, by means of the bottom cover (18). In other words, it is possible for the bottom cover (18) to form a cuboid shape with an open top surface and be attached to the bottom of the cabinet (11). In this case, the side portion of the cabinet (11) should only extend to the bottom of the bottom portion of the cabinet (11).

[0057] Meanwhile, on the upper surface of the bottom cover (18), a fire-prevention means or fire-prevention member is provided to block flames or smoke from entering the room in the event of a fire. Specifically, the fire-prevention means or fire-prevention member may include a metal shield plate (51) placed on the upper surface of the bottom cover (18) and a suction guide (52) fixed to the upper surface of the shield plate (51). The configuration and operation of the fire-prevention means or fire-prevention member will be described in detail below with reference to the drawings.

[0058] FIG. 6 is a perspective view of a cold air supply assembly provided in a refrigerator for an entrance hall according to an embodiment of the present invention, and FIG. 7 is an exploded perspective view of the cold air supply assembly.

[0059] Referring to FIGS. 6 and 7, a cold air supply assembly (A) according to an embodiment of the present invention may include a module case (21), a module cover (22) placed on the module case (21), a partition plate (20) coupled to the bottom surface of the module case (21), and a cold air supply module (30) mounted through the partition plate (20) and the bottom of the module case (21).

[0060] In detail, a cooling fan receiving portion (221) protrudes upward from the center of the module cover (22), and an intake grille (222) is formed on the upper surface of the cooling fan receiving portion (221).

[0061] Additionally, discharge grilles (223) are formed on the left and right sides of the cooling fan receiving portion (221), respectively. A cooling fan (33) constituting the cold air supply module (30) is received in the cooling fan receiving portion (221).

[0062] A plurality of fixing grooves (224) (or fixing holes) may be formed on the edge of the module cover (22).

[0063] Additionally, a through hole (203) is formed in the center of the above-mentioned partition plate (20), and a pair of side support ribs (206) may be arranged parallel to each of the left and right edges of the through hole (203).

[0064] In addition, a front support rib (204) and a rear support rib (205) may be extended respectively at the front and rear edges of the through hole (203).

[0065] Additionally, a plurality of fastening bosses (202) may be formed protrudingly on the upper surface of the partition plate (20). The plurality of fastening bosses (202) may include a front fastening boss extending upward from a point adjacent to the front support rib (204) and a rear fastening boss extending upward from a point adjacent to the rear support rib (205).

[0066] The above module case (21) may include a bottom portion (211) in which a cold sink insertion hole (212) is formed in the center, a first side portion (213) extending upward from the edge of the bottom portion (211), a seating ledge (214) that is horizontally bent outward from the top of the first side portion (213), a second side portion (215) that is extended upward from the end of the seating ledge (214), and a flange (216) that is horizontally bent outward from the top of the second side portion (215).

[0067] Here, the outer direction can be understood to mean a direction away from the center of the module case (21).

[0068] In detail, the module case (21) is inserted into the bottom hole (111: see FIG. 3) formed in the bottom of the cabinet (11). The flange (216) is seated on the bottom surface of the storage room (101).

[0069] The module cover (22) is seated on the seated ledge (214). A plurality of fixing protrusions (218) may protrude from the seated ledge (214). When the module cover (22) is placed on the seated ledge (214), the fixing protrusions (218) are inserted into the fixing grooves (224) of the module cover (22), thereby preventing the module cover (22) from swaying in the horizontal direction.

[0070] Additionally, a fastening boss (217) may be extended from the bottom surface of the flange (216), and the fastening boss (217) may be extended from the bottom surfaces of the front end flange and the rear end flange of the module case (21), respectively.

[0071] The above fastening boss (217) is seated on the fastening boss (202) extending from the upper surface of the partition plate (20), and the partition plate (20) can be coupled to the module case (21) by a fastening member penetrating the fastening bosses (202, 217).

[0072] A plurality of fastening bosses (217a) protrude from the flange (216), and a fastening member inserted into the fastening boss (217a) is inserted into the bottom portion of the cabinet (11), so that the module case (21) can be stably fixed to the bottom of the cabinet (11). The plurality of fastening bosses (217a) may be formed at the four corner portions of the flange (216).

[0073] Meanwhile, a pair of insertion ribs (218) may be extended on the bottom surface of the module case (21). The pair of insertion ribs (218) may be formed at points spaced apart from the left edge and the right edge, respectively, of the cold sink insertion hole (212). The pair of insertion ribs (218) may be extended to a length from the front end to the rear end of the bottom portion (211) of the module case (21).

[0074] In addition, the front support rib (204) and the rear support rib (205) formed on the upper surface of the partition plate (20) support the front and rear of the module case (21), respectively, thereby enabling alignment of the module case (21) and the partition plate (20) in the front-rear direction.

[0075] Specifically, the front support rib (204) and the rear support rib (205) support the side portions extending upward from the front and rear edges of the bottom portion (211) among the first side portions (213) of the module case (21).

[0076] Referring together with FIG. 4, the cold supply module (30) may include a thermoelectric element (31) formed on opposite sides of the heat absorption surface and the heat generation surface, a cold sink (32) attached to the heat absorption surface of the thermoelectric element (31), a cooling fan (33) positioned above the cold sink (32), a heat sink (34) attached to the heat generation surface of the thermoelectric element (31), a heat dissipation fan (35) positioned below the heat sink (34), and an insulation block (36) positioned between the cold sink (32) and the heat sink (34).

[0077] Each of the above cold sink (32) and heat sink (34) may include a sink body (321, 341) having one side attached to the thermoelectric element (31), and a plurality of heat exchange fins (322, 342) extending from the other side of the sink body. The heat exchange fins of the cold sink (32) may be defined as cooling fins, and the heat exchange fins of the heat sink (34) may be defined as heat dissipation fins.

[0078] Additionally, the cooling fins and heat dissipation fins may be arranged spaced apart in the left-right direction of the sink body. Alternatively, the fins on one side of the cooling fins and heat dissipation fins may be arranged in the left-right direction of the sink body, and the fins on the other side may be arranged in the front-back direction of the sink body.

[0079] In this embodiment, the cooling fins are shown as having a structure that extends in the left-right direction of the entrance refrigerator and is arranged in the front-back direction, and the heat dissipation fins are shown as having a structure that extends in the front-back direction of the entrance refrigerator and is arranged in the left-right direction, but are not limited thereto.

[0080] According to the present invention, cold air inside the storage room flows along the back of the outer door (12) and the back of the inner door (13) and flows into the cold air inlet (162: see FIG. 3) formed on the front and rear of the pantry duct (16).

[0081] Cold air flowing into the cold air inlet (162) is sucked into the cooling fan (33) through the intake grille (222) of the module cover (22).

[0082] The cold air sucked in by the cooling fan (33) flows along the space between the cooling fins of the cold sink (32) and is divided into left and right directions of the module case (21).

[0083] The cold air flowing in the left and right directions of the module case (21) passes through the discharge grille (223) of the module cover (22), is discharged through the cold air discharge port (163) formed on the side of the pantry duct (16), and then rises along both sides of the storage room.

[0084] On the bottom surface of the pantry duct (16), although not shown in the drawing, a partition rib may be formed to prevent the cold air sucked in through the intake port (162) and the cold air discharged through the discharge port (163) from mixing.

[0085] FIG. 8 is a cross-sectional cutaway perspective view of a refrigerator for an entrance according to an embodiment of the present invention cut along 8-8 of FIG. 2, FIG. 9 is an exploded perspective view of a refrigerator for an entrance equipped with a fire-prevention means according to an embodiment of the present invention, and FIG. 10 is a cross-sectional view of a refrigerator for an entrance cut along 10-10 of FIG. 8.

[0086] Referring to FIGS. 8 to 10, the fire-prevention means according to an embodiment of the present invention may be placed inside the machine room of a refrigerator (10) for an entrance.

[0087] In detail, the fire prevention means according to an embodiment of the present invention may include a shield plate (51) placed on the upper surface of the bottom cover (18), a spring (54) placed between the front of the shield plate (51) and the inner cover (41) of the entrance door (40), and an interconnect (53) connecting the front bracket (44) and the shield plate (51) to maintain the spring (54) in a compressed state.

[0088] Strictly speaking, the spring (54) can be understood as being placed in the space between the front of the shield plate (51) and the back of the front bracket (44).

[0089] A suction guide (52) can be fixed to the upper surface of the shield plate (51), and the interconnect (53) can be connected to the suction guide (52).

[0090] In other words, if the suction guide (52) is not provided, the interconnector (53) can connect the shield plate (51) and the front bracket (44), and if the suction guide (52) is provided, the interconnector (53) can connect the suction guide (52) and the front bracket (44).

[0091] In detail, the interconnect (53) may be made of a plastic material and designed to melt at a set temperature in the event of a fire. That is, it may be designed to melt when the interconnect (53) is heated above its melting point by heat transmitted to the entrance door (40).

[0092] The above fire prevention means may further include a spring screw (B1) inserted into the interior of the spring (54) by penetrating the inner cover (42) of the entrance door (40) and the front of the machine room (102) that is in close contact with the inner cover (42), an outer screw (B2) inserted into one end of the interconnector (53) by penetrating the inner cover (41) and the front of the machine room (102), and an inner screw (B3) inserted into the other end of the interconnector (53) by penetrating the shield plate (51) or the suction guide (52).

[0093] The screws (B1 to B3) may be made of a metal material having a melting point temperature higher than that of the interconnect (53).

[0094] The above fire-resistant means may further include guide brackets (55) that are respectively positioned at the left and right edges of the shield plate (51) and fixed to the bottom cover (18) or front bracket (44).

[0095] The guide bracket (55) prevents the shield plate (51) from swaying in the left and right directions when it slides toward the rear, i.e., toward the inner door (13), due to the restoring force of the spring (54).

[0096] Meanwhile, the front of the machine room (102) can be defined by the front bracket (44), both sides of the machine room (102) can be defined by the side brackets (45), and the rear and bottom surfaces of the machine room (102) can be defined by the bottom cover (18).

[0097] Additionally, an intake grille (183) is formed on the floor of the machine room (102), that is, in the central part of the bottom cover (18), to allow indoor air to flow into the machine room (102). Furthermore, a discharge grille (184) is formed on the parts of the floor of the machine room (102) corresponding to the left and right sides of the intake grille (183), that is, in the left and right sides of the bottom cover (18). Air that flows into the machine room (102) and exchanges heat with the heat sink (34) is discharged back into the room through the discharge grille (184).

[0098] Each of the suction grille (183) and the discharge grille (184) may include a plurality of slits spaced apart at a predetermined interval in the front-rear direction of the machine room (102). The front-rear direction of the machine room (102) may be defined as the direction connecting the entrance door (40) and the interior door (13).

[0099] Additionally, the discharge grille (184) may be spaced apart from the suction grille (183) at a predetermined distance to the side of the machine room (102).

[0100] FIG. 11 is a rear perspective view of a shield plate constituting a fire-prevention means according to an embodiment of the present invention, and FIG. 12 is a cut-away perspective view of a shield plate cut along 12-12 of FIG. 11.

[0101] Referring to FIGS. 11 and 12, a shield plate (51) constituting a fire-prevention means according to an embodiment of the present invention may include a plate body (511) placed on the floor of the machine room (102), that is, on the upper surface of the bottom plate (18), a front flange (512) extending upward from the front end of the plate body (511), and a rear flange (513) bent at the rear end of the plate body (511).

[0102] In the above plate body (511), a suction grille (514) and a discharge grille (515) are each formed by arranging a plurality of slits in the front-rear direction, similar to the bottom plate (18).

[0103] A plurality of slits formed in the plate body (511) and a plurality of slits formed in the bottom plate (18) can be arranged with the same size and spacing. Accordingly, depending on the position of the shield plate (51), the slits formed in the bottom plate (18) can be completely open or completely closed.

[0104] Additionally, a spring support boss (512a) may protrude from the front of the front flange (512). The spring support boss (512a) may be a burr that protrudes from the front of the front flange (512) when punched from the back of the front flange (512) toward the front. The rear end of the spring (54) is fitted into and supported by the spring support boss (512a).

[0105] Additionally, the rear end of the interconnect (53) is in close contact with the front surface of the front flange (512), and the inner screw (B3) can be inserted into the interconnect (53) by penetrating the front flange (512). With the front flange (512) connected to the inner connector (53), the spring (54) is compressed and has accumulated restoring force.

[0106] Additionally, a coupling burr (516) may protrude upward from the plate body (511), and a fastening hole (516a) may be formed on the inner side of the coupling burr (516). A plurality of fastening holes (516a) may be formed, and the plurality of fastening holes (516a) may be formed in the plate body (511) corresponding to the space between the suction grille (514) and the discharge grille (515).

[0107] The coupling burr (516) may protrude at an angle in the shape of the head of the fastening screw (B4) inserted into the fastening hole (516a). That is, when the fastening screw (B4) is inserted from the bottom surface of the plate body (511) toward the top surface, the head of the fastening screw (B4) is inserted into the coupling burr (516). As a result, the head of the fastening screw (B4) does not protrude from the bottom surface of the plate body (511).

[0108] FIG. 13 is a planar perspective view of a suction guide constituting a fire-prevention means according to an embodiment of the present invention, FIG. 14 is a bottom perspective view of the suction guide, and FIG. 15 is a longitudinal cross-sectional perspective view of a refrigerator for an entrance hall cut along 15-15 of FIG. 8.

[0109] Referring to FIGS. 13 to 15, an intake guide (52) according to an embodiment of the present invention is provided to prevent indoor air flowing into the machine room (102) through the intake grille (183, 514) and air discharged from the machine room (102) into the room through the discharge grille (184, 515) from mixing inside the machine room.

[0110] In detail, if there is no partition member between the intake grille (183,514) and the discharge grille (184,515), the high-temperature air guided toward the discharge grille (184,515) flows back toward the heat dissipation fan (35), and the cooling performance of the heat sink (34) may be reduced.

[0111] To prevent this phenomenon, the suction guide (52) may be provided in the shape of a square frame. The suction guide (52) is designed to be sized to surround the front, rear, left, and right edges of the suction grille (183, 514). The upper surface of the suction guide (52) may be positioned adjacent to the bottom of the heat dissipation fan (35), as shown in the cross-sectional view of FIGS. 4 and FIGS. 5. Accordingly, indoor air entering through the suction grille (183, 514) is guided directly to the heat dissipation fan (35), and air descending toward the discharge grille (184, 515) is hardly drawn into the suction guide (52).

[0112] The suction guide (52) may include a front wall (521), a pair of side walls (522) extending rearward from both ends of the front wall (521), and a rear wall (523) connecting the pair of side walls (522).

[0113] A vertical fastening boss (524) may be formed protrudingly at each of the four corners of the suction guide (52). A fastening hole (524a) is formed in the vertical fastening boss (524), and the fastening screw (B4) that penetrates the shield plate (51) is inserted into the fastening hole (524a). Accordingly, the suction guide (52) forms one body with the shield plate (51) by means of the fastening screw (B4).

[0114] In addition, horizontal fastening bosses (525) are formed at the corners of the suction guide (52) corresponding to the two side edges of the front wall (521).

[0115] As shown in FIG. 15, a fastening hole (525a) is formed in the horizontal fastening boss (525), and an inner screw (B3) is inserted into the fastening hole (525a). The inner screw (B3) passes through the fastening hole (525a) and is inserted into the rear surface of the interconnect (53).

[0116] Additionally, the outer screw (B2) that penetrates the inner cover (41) of the entrance door (40) is inserted into the front of the interconnect (53).

[0117] The embodiment shown in FIG. 15 shows a structure in which an interconnect (53) is connected to the suction guide (52). That is, the rear end of the interconnect (53) may be connected to the front of the shield plate (51) or to the front of the suction guide (52).

[0118] FIG. 16 is a side cross-sectional view of a refrigerator for an entrance, cut along 16-16 of FIG. 8 in a state where no fire occurs.

[0119] Referring to FIG. 16, in a normal or normal state where no fire occurs, the spring (54) is maintained in a compressed state between the front flange (512) of the shield plate (51) and the front bracket (44).

[0120] In this state, the rear end of the shield plate (51), i.e., the rear flange (513), is maintained separated from the rear of the machine room (102), i.e., the vertical part (182) of the bottom cover (18).

[0121] In addition, in this state, the intake grille (514) and discharge grille (515) of the shield plate (51) are in communication with the intake grille (183) and discharge grille (184) of the bottom cover (18).

[0122] FIG. 17 is a side cross-sectional view of a refrigerator for an entrance, cut along 16-16 of FIG. 8 in a fire condition.

[0123] Referring to FIG. 17, when a fire occurs outdoors and the front door (40) is heated to a high temperature, the temperature of the inner cover (41) of the front door (40) also rises.

[0124] The heat transferred to the inner cover (41) is transferred to the interconnect (53), and when the temperature of the interconnect (53) rises above the melting point, the interconnect (53) melts.

[0125] When the interconnect (53) melts, the connection between the inner cover (41) and the shield plate (51) or between the inner cover (41) and the suction guide (52) is destroyed. As a result, the compression state of the spring (54) is released, and the spring (54) pushes the shield plate (51).

[0126] In detail, due to the restoring force of the spring (54), the rear end of the shield plate (51), i.e., the rear flange (513), comes into contact with the vertical portion (184) of the bottom cover (18). In this state, the alignment (or communication) between the intake grille (514) and the discharge grille (515) of the shield plate (51) and the intake grille (183) and the discharge grille (184) of the bottom cover (18) is broken. That is, the intake grille (183) and the discharge grille (184) of the bottom cover (18) are shielded by the shield plate (51).

[0127] When the intake grille (183) and the discharge grille (184) are shielded, indoor air cannot flow into the machine room (102), and flames inside the machine room (102) cannot be discharged into the room, thus preventing the flames from spreading into the room.

[0128] Meanwhile, the above interconnect (53) is described as being connected to the front left edge and the right edge of the suction guide (52), respectively, but it should be noted that it is not limited thereto.

[0129] For example, a structure in which a single interconnect (53) is connected to the front center of the suction guide (52) may also be possible. Compared to cases where there are two or more interconnects (53), the time required for melting in the event of a fire can be reduced when there is only one interconnect (53). As a result, there is an advantage that the suction grille and the discharge grille are shielded more quickly compared to cases where there are two or more interconnects (53).

Claims

Claim 1 A refrigerator for an entrance door installed through a passageway, comprising an inner cover exposed to the interior, an outer cover exposed to the exterior, and a fireproof layer formed between the inner cover and the outer cover, wherein the refrigerator for the entrance door comprises: a cabinet in which the front is exposed to the exterior and the rear is exposed to the interior, and a space is formed inside; a mullion in which a hole of a predetermined size is formed, dividing the space into an upper storage room and a lower machine room; and a cold air supply module mounted in the hole. and includes a fire prevention means installed on the floor of the machine room, wherein an intake grille and a discharge grille are formed on the floor of the machine room, and the fire prevention means includes a shield plate placed on the floor of the machine room and having an intake grille and a discharge grille formed thereon, a connecting member that directly or indirectly connects the shield plate to the front of the machine room, and a spring interposed in a compressed state between the front of the shield plate and the front of the machine room, wherein when the spring is in a compressed state, the intake grille and the discharge grille of the floor of the machine room communicate with the intake grille and the discharge grille of the shield plate, respectively, and the intake grille and the discharge grille of the floor of the machine room and the intake grille and the discharge grille of the shield plate each include a plurality of slits, wherein the plurality of slits are spaced apart in the front-rear direction of the cabinet, and the connecting member includes an interconnector whose front end contacts the front of the machine room and whose rear end contacts the front of the shield plate, an outer screw that penetrates the inner cover and is inserted into the interconnector, and the front of the shield plate A refrigerator for an entrance hall comprising an inner screw that penetrates and is inserted into the interconnect. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 A refrigerator for an entrance hall according to claim 1, further comprising a suction guide coupled to the upper surface of the shield plate, wherein the connecting member comprises one or more interconnects having a front end contacting the front surface of the machine room and a rear end contacting the suction guide, an outer screw inserted into the interconnect through the inner cover, and an inner screw inserted into the interconnect through the suction guide. Claim 6 A refrigerator for an entrance hall according to claim 5, wherein the suction guide is formed in a frame shape having a predetermined height and is wrapped along the edge of the suction grille formed on the shield plate to minimize mixing of air flowing into the machine room through the suction grille and air guided to the discharge grille inside the machine room. Claim 7 A refrigerator for an entrance hall according to claim 6, characterized in that the suction guide is fixed to the upper surface of the shield plate by means of a fastening screw. Claim 8 A refrigerator for an entrance hall according to claim 7, characterized in that the plurality of interconnectors are respectively connected to the front left edge and the front right edge of the suction guide. Claim 9 A refrigerator for an entrance hall according to claim 7, characterized in that the one interconnect is connected to the front center of the suction guide. Claim 10 A refrigerator for an entrance hall according to claim 5, characterized in that the interconnector is made of a plastic material that melts at a temperature above a set temperature. Claim 11 A refrigerator for an entrance hall according to claim 10, characterized in that when the interconnector melts and the fastening relationship between the suction guide or the shield plate and the outer screw is released, the shield plate slides to the rear of the machine room by the restoring force of the spring. Claim 12 A refrigerator for an entrance hall according to claim 11, characterized in that the shield plate slides to the rear of the machine room so that the intake grille and the discharge grille of the machine room floor are shielded by the shield plate. Claim 13 A refrigerator for an entrance hall according to claim 11, further comprising a pair of guide brackets provided on the floor of the machine room corresponding to the left and right edges of the shield plate to guide the sliding movement of the shield plate. Claim 14 A refrigerator for an entrance hall according to claim 1, further comprising an outer door that shields an opening formed on the front of the cabinet and an inner door that shields an opening formed on the rear of the cabinet. Claim 15 A refrigerator for an entrance hall according to claim 1, wherein the cold air supply module comprises a thermoelectric element that forms a heat-absorbing surface and a heat-generating surface on each of its two sides when current is supplied, a cold sink attached to the heat-absorbing surface, a cooling fan disposed above the cold sink, a heat sink attached to the heat-generating surface, and a heat dissipation fan disposed below the heat sink, wherein the cold sink and the cooling fan are exposed to the storage room, and the heat sink and the heat dissipation fan are exposed to the machine room.

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