Refrigerator

Abstract

A refrigerator includes an inner case forming a storage compartment, an outer case coupled to an outer side of the inner case to form an exterior, and an insulation arranged between the inner case and the outer case and having an insulation thickness corresponding to a distance between the inner case and the outer case. The inner case includes a first inner case portion spaced apart from the outer case to allow the insulation to have a first insulation thickness, a second inner case portion spaced apart from the outer case to allow the insulation to have a second insulation thickness different from the first insulation thickness, a boundary portion formed between the second inner case portion and the first inner case portion. The inner case includes a plurality of first beads formed to be arranged along the boundary portion on a corner portion of the second inner case portion connected to the boundary portion and / or on a portion adjacent to the corner portion of the second inner case portion, and a second bead formed along a direction of arrangement of the plurality of first beads on a portion of the first inner case portion adjacent to the plurality of first beads.

Description

[Technical Field]

[0001] The disclosure relates to a refrigerator capable of compensating for the strength of a portion where the insulation thickness of a side wall abruptly changes.[Background Art]

[0002] In general, a refrigerator, an appliance for keeping food fresh, includes a main body having a storage compartment and a cold air supply system for supplying cold air to the storage compartment. The storage compartment includes a refrigerating compartment in which the food is kept refrigerated at a temperature of about 0°C to 5°C, and a freezing compartment in which the food is kept frozen at a temperature of about 0°C to -30°C.

[0003] The storage compartment may be provided with a plurality of shelves for ease of storage, and may be provided with a storage box to allow the food products stored therein may be stored in a state containing moisture.

[0004] Guide rails that guide the insertion and / or withdrawal of the storage box may be formed on both side walls of the storage compartment. To form the guide rails, a portion of each of both side walls of the storage compartment may be formed with a portion protruding inwardly of the storage compartment. The portion protruding inwardly of the storage compartment and changing rapidly in insulation thickness to have a different insulation thickness from other portions may be deformed and / or cracked by stresses generated when the insulation material shrinks and / or expands.[Disclosure][Technical Problem]

[0005] An aspect of the present disclosure provides an improved refrigerator capable of compensating for the strength of a portion where the insulation thickness of a side wall changes abruptly.

[0006] An aspect of the present disclosure provides a refrigerator in which a bead is formed on a corner portion of a portion where the insulation thickness of a side wall changes abruptly to compensate for the strength.

[0007] An aspect of the present disclosure provides a refrigerator in which a bead is formed on a boundary portion of a portion where the insulation thickness of a side wall changes abruptly to compensate for the strength.

[0008] Technical tasks to be achieved in this document are not limited to the technical tasks mentioned above, and other technical tasks not mentioned will be clearly understood by those skilled in the art from the description below.[Technical Solution]

[0009] According to an embodiment of the present disclosure, a refrigerator includes an inner case forming a storage compartment, an outer case coupled to an outer side of the inner case to form an exterior, and an insulation arranged between the inner case and the outer case and having an insulation thickness corresponding to a distance between the inner case and the outer case. The inner case includes a first inner case portion spaced apart from the outer case to allow the insulation to have a first insulation thickness, a second inner case portion spaced apart from the outer case to allow the insulation to have a second insulation thickness different from the first insulation thickness, a boundary portion formed between the second inner case portion and the first inner case portion. The inner case includes a plurality of first beads formed to be arranged along the boundary portion on a corner portion of the second inner case portion connected to the boundary portion and / or on a portion adjacent to the corner portion of the second inner case portion. The inner case includes a second bead formed along a direction of arrangement of the plurality of first beads on a portion of the first inner case portion adjacent to the plurality of first beads.

[0010] Each of the plurality of first beads may be formed on a portion of the corner portion of the second inner case portion adjacent to the boundary portion.

[0011] Each of the plurality of first beads may be formed to extend to a portion of the first inner case portion adjacent to the boundary portion.

[0012] Each of the plurality of first beads may be formed to extend from a portion of the corner portion of the second inner case portion adjacent to the boundary portion to a portion adjacent to the boundary portion of the first inner case portion.

[0013] The plurality of first beads may be arranged in a direction perpendicular to a direction of stress generated during shrinkage and / or expansion of the insulation, thereby dispersing the stress.

[0014] Each of the plurality of first beads may be formed to protrude outwardly from the inner case.

[0015] Each of the plurality of first beads may be formed to protrude inwardly from the inner case.

[0016] The second bead may be formed in an arc shape.

[0017] The second bead may be formed to be spaced apart from an end of the plurality of first beads to correspond to a portion of the plurality of first beads.

[0018] The second bead may be formed to protrude outwardly from the inner case.

[0019] The second bead may be formed to protrude inwardly from the inner case.

[0020] The second inner case portion may be formed to protrude inwardly from the inner case to allow the second insulation thickness to be greater than the first insulation thickness.

[0021] The first inner case portion and the second inner case portion may be formed on a side wall of the inner case, and the second inner case portion may be formed to protrude further inwardly from the inner case than the first inner case portion.[Advantageous effects]

[0022] According to various embodiments of the present disclosure, the bead may be formed on the corner portion of the portion where the insulation thickness of the refrigerator side wall changes abruptly, thereby compensating for the strength by increasing an reaction force against stresses generated when the insulation shrinks and / or expands.

[0023] According to various embodiments of the present disclosure, the bead may be formed on the corner portion of the portion where the insulation thickness of the refrigerator side wall changes abruptly, thereby compensating for the strength by dispersing the stresses generated when the insulation shrinks and / or expands.

[0024] According to various embodiments of the present disclosure, the bead may be formed on the boundary portion of the portion where the insulation thickness of the refrigerator side wall changes abruptly, thereby enhancing structural strength by increasing an reaction force against stresses generated when the insulation shrinks and / or expands.

[0025] According to various embodiments of the present disclosure, a bead may be formed on a boundary portion of a portion where the insulation thickness of the refrigerator side wall changes abruptly, thereby enhancing structural strength by dispersing the stress generated when the insulation shrinks and / or expands.

[0026] The effects to be obtained from the present disclosure are not limited to those mentioned above, and other effects not mentioned will be apparent to those of skilled in the art from the following description.[Description of Drawings]

[0027] FIG. 1 is a perspective view illustrating a refrigerator according to an embodiment. FIG. 2 is a side cross-sectional view illustrating the refrigerator according to an embodiment. FIG. 3 is a perspective view illustrating an inner case, according to an embodiment. FIG. 4 is an enlarged cross-sectional view of portion A shown in FIG. 3. FIG. 5 is an enlarged view of portion A shown in FIG. 3. FIG. 6 is a view illustrating a plurality of first beads and a second bead formed to protrude inwardly from the inner case, according to an embodiment. FIG. 7 is a view illustrating the inner case, according to an embodiment, wherein only the plurality of first beads are formed to protrude outwardly from the inner case. FIG. 8 is a view illustrating an inner case, according to an embodiment, wherein only the plurality of first beads are formed to protrude inwardly from the inner case. [Modes of the Invention]

[0028] Various embodiments of the present document and terms used therein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various modifications, equivalents, or substitutes of the corresponding embodiments.

[0029] In addition, the same reference numerals or signs shown in the drawings of the disclosure indicate elements or components performing substantially the same function.

[0030] Also, the terms used herein are used to describe the embodiments and are not intended to limit and / or restrict the disclosure. The singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. In this disclosure, the terms "including", "having", and the like are used to specify features, figures, steps, operations, elements, components, or combinations thereof, but do not preclude the presence or addition of one or more of the features, figures, steps, operations, elements, components, or combinations thereof.

[0031] It will be understood that, although the terms "first", "second", "primary", "secondary", etc., may be used herein to describe various elements, but elements are not limited by these terms. These terms are only used to distinguish one element from another element. For example, without departing from the scope of the disclosure, a first element may be termed as a second element, and a second element may be termed as a first element. The term of "and / or" includes a plurality of combinations of relevant items or any one item among a plurality of relevant items.

[0032] Further, as used in the disclosure, the terms "front", "rear", "top", "bottom", "side", "left", "right", "upper", "lower", and the like are defined with reference to the drawings, and are not intended to limit the shape and position of any element.

[0033] Hereinafter, various embodiments according to the disclosure will be described in detail with reference to the accompanying drawings.

[0034] FIG. 1 is a perspective view illustrating a refrigerator according to an embodiment. FIG. 2 is a side cross-sectional view illustrating the refrigerator according to an embodiment.

[0035] As shown in FIGS. 1 and 2, a refrigerator may include a main body 10, a storage compartment 20 formed on interior of the main body 10, a door 30 configured to open or close the storage compartment 20, and a cold air supply device configured to supply cold air to the storage compartment 20.

[0036] The main body 10 may include an inner case 100 in which the storage compartment 20 is formed, an outer case 13 coupled to an outer side of the inner case 100 to form an exterior thereof, and an insulation 15 foamed between the inner case 100 and the outer case 13 to thermally insulate the storage compartment 20 and prevent cold air from escaping.

[0037] The storage compartment 20 may be formed inside the main body 10. In other words, the storage compartment 20 may be formed by the inner case 100. The storage compartment 20 may be configured as a refrigerating compartment or a freezing compartment. Although the drawings show the storage compartment 20 as being formed as a single compartment, which may be either a refrigerating or freezing compartment, it is not limited thereto. For example, the storage compartment 20 may be divided by a partition wall into a refrigerating compartment, which is an upper storage compartment arranged in an upper portion of the main body 10, and a freezing compartment, which is a lower storage compartment arranged in a lower portion of the main body 10. In other words, a refrigerating compartment may be arranged at the upper portion inside the main body 10, and a freezing compartment may be arranged at the lower portion of the refrigerating compartment. Alternatively, a freezing compartment may be arranged at the upper portion inside the main body 10 and a refrigerating compartment may be arranged at the lower portion of the refrigerating compartment.

[0038] For convenience of storage, the interior of the storage compartment 20 may be provided with a plurality of shelves 27 on which food and the like may be placed thereon. In addition, a storage box 29 may be provided inside the storage compartment 20 in which food and the like may be stored in a moisture-containing state.

[0039] The storage box 29 may be configured to be insertable into and / or withdrawable from the storage compartment 20. To allow the storage box 29 to be inserted and / or withdrawn inside the storage compartment 20, the storage compartment 20 may be provided with a guide rail (not shown). The guide rail may be formed on an upper surface of a second inner case portion 120, which will be described below (see FIGS. 3 and 4).

[0040] The storage compartment 20 may be opened and closed by the door 30 rotatably coupled to the main body 10. A plurality of door guards 35 may be installed on a rear surface of the door 30 to store food or the like. Although the storage compartment 20 is shown in the drawings as being formed as a refrigerating compartment or a freezing compartment, that is, as a single storage compartment, and the door 30 is shown as being arranged as a single door, it is not limited thereto. In other words, in cases where the storage compartment 20 is divided by a partition into an upper refrigerating compartment arranged in an upper portion of the main body 10 and a lower freezing compartment arranged in a lower portion of the main body 10, the refrigerating compartment and the freezing compartment may each be opened and closed by a separate refrigerating compartment door and a separate freezing compartment door, respectively, which are rotatably coupled to the main body 10.

[0041] The refrigerator may include a cold air supply device configured to supply cold air to the storage compartment 20. The cold air supply device may include a compressor 41 installed in a machine compartment 25 to compress a refrigerant, a condenser (not shown) installed in the machine compartment25 to condense the compressed refrigerant, an expansion valve (not shown) to expand the refrigerant condensed by the condenser, an evaporator 42 installed at a rear of the storage compartment 20 to generate cold air, and a fan 44 to direct the cold air generated by the evaporator 42 to be supplied to the storage compartment 20. Although the drawings show the storage compartment 20 as being formed as a refrigerating compartment or a freezing compartment, i.e., a single compartment, and one evaporator 42 and one fan 44 are shown as being arranged at the rear of the storage compartment 20, such a configuration is not limited thereto. In other words, in cases where the storage compartment 20 is divided by a partition into a refrigerating compartment, which is an upper storage compartment arranged in an upper portion of the main body 10, and a freezing compartment, which is a lower storage compartment arranged in a lower portion of the main body 10, a first evaporator and a second evaporator may be arranged at the rear of the refrigerating compartment and the rear of the freezing compartment, respectively. In addition, a first fan and a second fan may be arranged at the rear of the refrigerating compartment and the freezing compartment, respectively.

[0042] In addition, the cold air supply device may include a cold air duct 46 that guides the cold air induced by the fan 44 into the storage compartment 20 and discharges the guided air into the storage compartment 20. The cold air duct 46 may be provided with a plurality of cold air discharge holes 47 that discharge cold air into the storage compartment 20. Although the storage compartment 20 is shown in the drawings as being formed as a refrigerating compartment or a freezing compartment, i.e., a single storage compartment, with one cold air duct 46 disposed at the rear of the storage compartment 20, it is not limited thereto. In other words, when the storage compartment 20 is divided by a partition into a refrigerating compartment, which is an upper storage compartment arranged in an upper portion of the main body 10, and a freezing compartment, which is a lower storage compartment arranged in a lower portion of the main body 10, a refrigerating compartment cold air duct and a freezing compartment cold air duct may be arranged at the rear of the refrigerating compartment and the rear of the freezing compartment, respectively.

[0043] FIG. 3 is a view illustrating the inner case according to an embodiment. FIG. 4 is an enlarged cross-sectional view of portion A shown in FIG. 3. FIG. 5 is an enlarged view of portion A shown in FIG. 3.

[0044] As shown in FIGS. 3 to 5, the insulation 15 arranged between the inner case 100 and the outer case 13 may have an insulation thickness T. The insulation thickness T may be a distance between the inner case 100 and the outer case 13.

[0045] The inner case 100 may include a first inner case portion 110 spaced apart from the outer case 13 such that the insulation thickness T of the insulation 15 has a first insulation thickness T1. The first inner case portion 110 may form both side walls of the storage compartment 20.

[0046] The inner case 100 may include a second inner case portion 120 spaced apart from the outer case 13 such that the insulation thickness T of the insulation 15 has a second insulation thickness T2. The second insulation thickness T2 of the second inner case portion 120 may be different from the first insulation thickness T1 of the first inner case portion 110. The second inner case portion 120 may be formed to protrude further inwardly from the inner case 100 than the first inner case portion 110. In other words, the second insulation thickness T2 may be thicker than the first insulation thickness T1. In other words, the second inner case portion 120 may be formed to protrude further toward the storage compartment 20 than the first inner case portion 110, which forms the side wall of the inner case 100. The second inner case portion 120 may support the storage box 29 (see FIGS. 1 and 2). The guide rail may be provided on an upper portion of the second inner case portion 120 to allow the storage box 29 to be inserted and / or withdrawn.

[0047] Although the drawings show the second inner case portion 120 as being formed to protrude further inwardly from the inner case 100 than the first inner case portion 110, it is not limited thereto. In other words, when the insulation thickness T of the insulation 15 is a rapidly changing portion, the second inner case portion 120 may be formed to protrude outwardly from the inner case 100 than the first inner case portion 110. Accordingly, the second insulation thickness T2, which is the insulation thickness T of the second inner case portion 120, may be formed thinner than the first insulation thickness T1, which is the insulation thickness T of the first inner case portion 110.

[0048] A boundary portion 130 may be formed between the first inner case portion 110 and the second inner case portion 120. A portion protruding from the first inner case portion 110, such as the second inner case portion 120, where the insulation thickness T changes abruptly from the first insulation thickness T1 to the second insulation thickness T2, may be deformed and / or cracked by stresses generated when the insulation 15 shrinks and / or expands. In other words, because the portion where the insulation thickness T changes abruptly has weak strength, it may be deformed and / or cracked by stresses generated when the insulation 15 shrinks and / or expands.

[0049] Among the portions where the insulation thickness T changes abruptly, the boundary portion 130 formed between the first inner case portion 110 and the second inner case portion 120 and a corner portion of the second inner case portion 120 connected to the boundary portion 130 may have a weaker strength, and therefore, deformation and / or cracking may occur more easily due to stresses generated during shrinkage and / or expansion of the insulation material 15. Accordingly, the boundary portion 130 and the corner portion of the second inner case portion 120 connected to the boundary portion 130 may be formed to have a greater curvature compared to the other portions to prevent deformation and / or cracking caused by stresses.

[0050] Although the strength of the boundary portion 130 and the corner portion of the second inner case portion 120 connecting with the boundary portion 130 may be compensated for to some extent by being formed to have a greater curvature compared to the other portions, it may be difficult to compensate for the weak strength by being formed to have a greater curvature alone.

[0051] Accordingly, the boundary portion 130 formed between the first inner case portion 110 and the second inner case portion 120 and the corner portion of the second inner case portion 120 connecting with the boundary portion 130 may further be formed with a plurality of first beads 141.

[0052] The plurality of first beads 141 may be formed on a corner portion of the second inner case portion 120 connected to the boundary portion 130. The plurality of first beads 141 may be formed on the boundary portion 130 adjacent to the corner portion of the second inner case portion 120 connecting with the boundary portion 130. The plurality of first beads 141 may be formed on a part of the first inner case portion 110 adjacent to the corner portion of the second inner case portion 120 connected to the boundary portion 130. In other words, each of the plurality of first beads 141 may be formed on a portion of the corner portions of the second inner case portion 120 adjacent to the boundary portion 130. In addition, each of the plurality of first beads 141 may be formed to extend to a portion of the first inner case portion 110 adjacent to the boundary portion 130. Each of the plurality of first beads 141 may be formed on a portion of the portions of the first inner case 110 adjacent to the boundary portion 130 that is adjacent to the corner portion of the second inner case portion 120 connected to the boundary portion 130. In other words, each of the plurality of first beads 141 may be formed to extend from a portion adjacent to the boundary portion 130 among the corner portions of the second inner case portion 120 connected to the boundary portion 130 to a portion adjacent to the boundary portion 130 of the first inner case portion 110. Stated differently, each of the plurality of first beads 141 may be formed to extend from the boundary portion 130 adjacent to the corner portion of the second inner case portion 120 connected to the boundary 130 at one end into the first inner case portion 110 and at the other end into the second inner case portion 120.

[0053] The plurality of first beads 141 may be formed to be arranged along the boundary portion 130. The plurality of first beads 141 arranged along the boundary portion 130 may be positioned perpendicular to a direction of stress generated by the shrinkage and / or expansion of the insulation 15.

[0054] As described above, because the plurality of first beads 141 are arranged in a direction perpendicular to the direction of stress generated during the shrinkage and / or expansion of the insulation 15, the plurality of first beads 141 may compensate for strength by increasing the increase an reaction force against stress. In addition, because the plurality of first beads 141 are arranged in a direction perpendicular to the direction of stress generated by the shrinkage and / or expansion of the insulation, the plurality of first beads 141 may compensate for strength by distributing stresses.

[0055] Each of the plurality of first beads 141 may be formed to protrude outwardly from the inner case 100. In other words, when viewed from the interior of the inner case 100, each of the plurality of first beads 141 may be formed as a recessed groove.

[0056] Together with the plurality of first beads 141, a second bead 151 may be formed in a direction along which the plurality of first beads 141 are arranged, in a portion of the first inner case portion 110 adjacent to the plurality of first beads 141. The second bead 151 may be formed to have an arc shape. In other words, the second bead 151 may be formed to have an arc shape along the boundary portion 130.

[0057] The second bead 151 may be formed to be spaced apart from an end of the plurality of first beads 141, which is an end portion of the plurality of first beads 141, to correspond to a portion of the plurality of first beads 141. In other words, the second bead 151 may be formed on the first inner case portion 110 such that the second bead 151 is adjacent to one end of the plurality of first beads 141.

[0058] The second bead 151 may be formed to protrude outwardly from the inner case 100. In other words, the second bead 151 may be formed in a grooved shape when viewed relative to the interior of the inner case 100.

[0059] FIG. 6 is a view illustrating the plurality of first beads and the second bead formed to protrude inwardly from the inner case according to an embodiment.

[0060] As shown in FIG. 6, each of the plurality of first beads 143 may be formed to protrude toward an inner side of the inner case 100. In other words, when viewed from the interior of the inner case 100, each of the plurality of first beads 143 may be formed as a protruding rib.

[0061] The second bead 153 may be formed to protrude inwardly from the inner case 100. In other words, the second bead 153 may be formed as a protruding rib when viewed from the interior of the inner case 100.

[0062] However, both the plurality of first beads 141 and the second bead 151 may be formed to protrude outwardly from the inner case 100, as shown in FIG. 5, and both the plurality of first beads 143 and the second bead 153 may be formed to protrude inwardly from the inner case 100, as shown in FIG. 6, but are not limited thereto. In other words, although not shown in the drawings, the plurality of first beads 141 may be formed to protrude outwardly from the inner case 100, and the second bead 153 may be formed to protrude inwardly from the inner case 100. In addition, the plurality of first beads 143 may be formed to protrude inwardly from the inner case 100, and the second bead 151 may be formed to protrude outwardly from the inner case 100.

[0063] FIG. 7 is a view illustrating the inner case, according to an embodiment, wherein only the plurality of first beads are formed to protrude outwardly from the inner case. FIG. 8 is a view illustrating the inner case, according to an embodiment, wherein only the plurality of first beads are formed to protrude inwardly from the inner case.

[0064] As shown in FIG. 7, the plurality of first beads 141 may be formed on the corner portion of the second inner case portion 120 connected to the boundary portion 130 and on a portion adjacent to the second inner case portion 120 connected to the boundary portion 130. The plurality of first beads 141 may be formed on the boundary portion 130 adjacent to the corner portion of the second inner case portion 120. In addition, the plurality of first beads 141 may be formed on a portion of the first inner case portion 110 adjacent to the corner portion of the second inner case portion 120 connected to the boundary portion 130. The plurality of first beads 141 may be formed to protrude toward an outer side of the inner case 100. In this case, the second bead 151 shown in FIG. 5 may not be formed. In other words, the second bead 151 may not be formed, and only the plurality of first beads 141 may be formed on the inner case 100 to compensate for the strength of the corner portion of the second inner case portion 120 connected to the boundary portion 130 and the portion adjacent to the corner portion of the second inner case portion 120 connected to the boundary portion 130.

[0065] As shown in FIG. 8, the plurality of first beads 143 may be formed on the corner portion of the second inner case portion 120 connected to the boundary portion 130 and the portion adjacent to the corner portion of the second inner case portion 120 connected to the boundary portion 130. The plurality of first beads 143 may be formed on the boundary portion 130 adjacent to the corner portion of the second inner case portion 120 connected to the boundary portion 130. In addition, the plurality of first beads 143 may be formed on a portion of the first inner case portion 110 adjacent to the corner portion of the second inner case portion 120 connected to the boundary portion 130. The plurality of first beads 143 may be formed to protrude toward an inner side of the inner case 100. In this case, the second bead 153 shown in FIG. 6 may not be formed. In other words, the second bead 153 may not be formed, and only the plurality of first beads 143 may be formed on the inner case 100 to compensate for strength of the corner portion of the second inner case portion 120 connected to the boundary portion 130 and a portion adjacent to the corner portion of the second inner case portion 120 connected to the boundary portion 130.

[0066] While the present disclosure has been particularly described with reference to exemplary embodiments, it should be understood by those of skilled in the art that various changes in form and details may be made without departing from the spirit and scope of the present disclosure.

Claims

1. A refrigerator, comprising: an inner case forming a storage compartment; an outer case coupled to an outer side of the inner case to form an exterior; and an insulation arranged between the inner case and the outer case and having an insulation thickness corresponding to a distance between the inner case and the outer case, wherein the inner case comprises: a first inner case portion spaced apart from the outer case to allow the insulation to have a first insulation thickness, a second inner case portion spaced apart from the outer case to allow the insulation to have a second insulation thickness different from the first insulation thickness, a boundary portion formed between the second inner case portion and the first inner case portion, a plurality of first beads formed to be arranged along the boundary portion on a corner portion of the second inner case portion connected to the boundary portion and / or on a portion adjacent to the corner portion of the second inner case portion, and a second bead formed along a direction of arrangement of the plurality of first beads on a portion of the first inner case portion adjacent to the plurality of first beads.

2. The refrigerator of claim 1, wherein each of the plurality of first beads is formed on a portion of the corner portion of the second inner case portion adjacent to the boundary portion.

3. The refrigerator of claim 2, wherein each of the plurality of first beads is formed to extend to a portion of the first inner case portion adjacent to the boundary portion.

4. The refrigerator of claim 3, wherein each of the plurality of first beads is formed to extend from a portion of the corner portion of the second inner case portion adjacent to the boundary portion to a portion adjacent to the boundary portion of the first inner case portion.

5. The refrigerator of claim 1, wherein the plurality of first beads are arranged in a direction perpendicular to a direction of stress generated during shrinkage and / or expansion of the insulation, thereby dispersing the stress.

6. The refrigerator of claim 1, wherein each of the plurality of first beads is formed to protrude outwardly from the inner case.

7. The refrigerator of claim 1, wherein each of the plurality of first beads is formed to protrude inwardly from the inner case.

8. The refrigerator of claim 1, wherein the second bead is formed in an arc shape.

9. The refrigerator of claim 1, wherein the second bead is formed to be spaced apart from an end of the plurality of first beads to correspond to a portion of the plurality of first beads.

10. The refrigerator of claim 1, wherein the second bead is formed to protrude outwardly from the inner case.

11. The refrigerator of claim 1, wherein the second bead is formed to protrude inwardly from the inner case.

12. The refrigerator of claim 1, wherein the second inner case portion is formed to protrude inwardly from the inner case to allow the second insulation thickness to be greater than the first insulation thickness.

13. The refrigerator of claim 1, wherein the first inner case portion and the second inner case portion are formed on a side wall of the inner case, and the second inner case portion is formed to protrude further inwardly from the inner case than the first inner case portion.

Images