Heat insulator

Abstract

Disclosed is a refrigerator. The refrigerator includes a main body. The main body includes multiple panels including a heat insulator. A joint may be disposed at a corner to which the multiple panels are connected. The joint may accordingly prevent heat leakage to the comer to which the multiple panels are connected. A third duct is disposed on one side of the joint. This may provide a cold air return flow path structure of a storage compartment appropriate for a vacuum insulation refrigerator to which multiple panels are coupled.

Description

[Technical Field]

[0001] The present disclosure relates to a heat insulator and, more particularly, to a refrigerator having a heat insulator.[Background Art]

[0002] In a vacuum insulated refrigerator, an insulation joint is essential at edges where a plurality of panels including the main body are connected, in order to prevent heat leakage.

[0003] Korean Registered Patent No. 10-2529094 (published on May 8, 2023) discloses a refrigerator. According to the patent document, a cold air return duct is coupled to a mullion. The cold air return duct serves to draw in air from a refrigerating compartment and discharge it into the inside of an evaporator compartment.

[0004] The patent document relates to an invention of an integrated vacuum insulated refrigerator.

[0005] However, the cold air return duct according to the patent document has a structure that is difficult to apply to an assembly-type refrigerator in which a plurality of vacuum insulated panels are assembled.[Disclosure] [Technical Problem]

[0006] The present disclosure is directed to providing a refrigerator having a structure capable of solving the aforementioned problems.

[0007] A first objective is to provide a refrigerator having a structure for applying a third duct (return duct) and a second duct (evaporator compartment) that are suitable for a vacuum insulated refrigerator including a joint that prevents heat leakage at edges where vacuum insulated panels are connected.

[0008] A second objective is to provide a refrigerator having a structure capable of dispersing the degree of frost formation on an evaporator and uniformly circulating cold air.

[0009] A third objective is to provide a refrigerator having a structure that improves thermal insulation performance while maintaining smooth airflow in a storage compartment.[Technical Solution]

[0010] A heat insulator of the present disclosure may be provided as at least one heat insulator. For example, the heat insulator may include: a first wall extending in one direction; and a second wall extending in a direction different from the one direction. In another example, the heat insulator of the present disclosure may include a first heat insulator and a second heat insulator. The second heat insulator may be provided as a separate component distinct from the first heat insulator. The second heat insulator may be connected to the first heat insulator by a connector. In the present disclosure, the connector may be defined as a joint. The second heat insulator may include a portion extending in the same direction as the first heat insulator. The second heat insulator may include a portion extending in a direction different from the first heat insulator. The heat insulator may be provided in the form of a panel.

[0011] A refrigerator according to one embodiment of the present disclosure includes a main body forming the exterior of the refrigerator. The main body includes a plurality of panels including a heat insulator. The refrigerator further includes a plurality of joints disposed at edges where the plurality of panels is connected. The refrigerator includes a first storage compartment formed on one side of the main body. The refrigerator further includes a second storage compartment formed on the other side of the main body and / or partitioned off from the first storage compartment by a partition wall. The refrigerator may include a first duct. The refrigerator includes a first duct disposed on one side of the first storage compartment to supply cold air to the first storage compartment. The refrigerator includes a second duct. The second duct accommodates an evaporator. The second duct is disposed on one side of the second storage compartment to supply the cold air generated by the evaporator to the second storage compartment or deliver the cold air to the first duct. The refrigerator includes a third duct. The third duct is communicatively connected to the first duct and the second duct. The third duct may return the cold air from the first storage compartment to the second duct. The refrigerator includes a circulation fan. The circulation fan is disposed inside the second duct. The circulation fan may circulate the cold air along the second duct, the first duct, and / or the third duct. The third duct may be disposed on one side of the joint.

[0012] The panel includes a plurality of first panels forming at least two first surfaces of the refrigerator. The plurality of panels further includes a second panel. The second panel forms a second surface of the refrigerator different from the first surface. The second panel may connect one side of each of the plurality of first panels. The plurality of panels further includes a third panel. The third panel forms a third surface of the refrigerator different from the first and / or second surfaces. The third panel may be connected to one side of each of the plurality of first panels and the second panel. The refrigerator further includes a block. The block forms at least one fourth surface of the refrigerator different from the first to third surfaces. The block may be connected to the other side of each of the plurality of first panels and the second panel.

[0013] The joint includes a first joint disposed at an corner where one of the plurality of first panels and the second panel are connected. The joint includes a second joint disposed at an corner where another of the plurality of first panels and the second panel are connected. The third duct may be disposed on one side of at least one of the first joint and the second joint.

[0014] The heat insulator includes a first plate. The first plate is disposed toward the first space. The first plate extends in one direction. The heat insulator includes a second plate disposed facing a second space formed outside the main body. The heat insulator includes a side plate extending in a direction different from the one direction from one side of the first plate and connected to one side of the second plate. The heat insulator further includes a support disposed in a vacuum space portion formed between the first plate and the second plate.

[0015] The block includes a block cover made of a plastic material. The block includes an insulating material molded from polyurethane foam inside the block cover.

[0016] The joint includes a joint cover made of a plastic material. The joint includes an insulating material molded from polyurethane foam inside the joint cover.

[0017] The joint includes: a first surface covering a portion of any one of the plurality of first panels; a second surface covering a portion of the second panel; and a third surface connected to edges of the first surface and the second surface and formed to be inclined with respect to the first surface and the second surface.

[0018] Optionally, the third duct may be disposed on the third surface.

[0019] The third duct may include at least one of first to fifth surfaces. The first surface surrounds the first surface of the joint. The second surface surrounds the second surface of the joint. The third surface surrounds the third surface of the joint. The fourth surface extends from the first surface and faces the second storage compartment. The fifth surface extends from the second surface and faces the evaporator.

[0020] The third duct includes an intake port and / or a discharge port. The intake port may communicate with the first storage compartment and be configured to draw in cold air from the first storage compartment. The discharge port may communicate with the second duct and be configured to discharge the returning cold air toward the evaporator. The discharge port may be formed at a peripheral portion of the third duct positioned lower than a central portion of the evaporator.

[0021] Optionally, the third duct includes: an intake port communicating with the first storage compartment and configured to draw in cold air from the first storage compartment. The third duct includes a discharge port communicating with the second duct and configured to discharge the returning cold air toward the evaporator. The third duct is disposed between the joint and the evaporator. The discharge port is formed to penetrate one surface of the third duct toward the evaporator.

[0022] Optionally, the third duct includes an intake port communicating with the first storage compartment and configured to draw in cold air from the first storage compartment. The third duct includes a discharge port communicating with the second duct and configured to discharge the returning cold air toward the evaporator. The intake port is formed inclinedly at an corner where the first duct and the partition wall are connected.

[0023] Optionally, the third duct includes a discharge port configured to discharge the cold air toward the evaporator. The discharge port may be formed to open toward the evaporator. A tapered portion may be formed inclinedly on a portion of the third duct opposite to the discharge port.

[0024] Optionally, the third duct may be provided in plurality. The third duct may be disposed on at least one of one side of the first joint and one side of the second joint.

[0025] Optionally, the refrigerator may further include a pass-through part disposed between any one of the plurality of third ducts and any one of the first and second joints.

[0026] Optionally, the refrigerator may further include a harness coupled to one surface of the third duct and / or configured to wrap electric wires or signal lines.

[0027] Optionally, a discharge port may be formed on one side of the third duct, and / or a defrost heater disposed at the evaporator may extend adjacent to the discharge port.

[0028] Optionally, an insulation reinforcement may be disposed between the second panel and the evaporator.

[0029] Optionally, the insulation reinforcement may include: a reinforcement cover made of a plastic material; and an insulating material molded from polyurethane foam inside the reinforcement cover.

[0030] Optionally, the insulation reinforcement may be disposed inside or outside a defrost water tray provided on one side of the evaporator.[Advantageous Effects]

[0031] According to embodiments of the present disclosure, the following effects can be achieved.

[0032] First, it is possible to provide a cold air return flow path structure of a storage compartment, appropriate for a vacuum insulated refrigerator in which multiple panels including a heat insulator are joined.

[0033] A first duct may be disposed in a first storage compartment (refrigerating compartment). A second duct may be disposed in a second storage compartment (freezing compartment). The second duct accommodates an evaporator. A third duct may be communicatively connected to the first duct and the second duct, so that the cold air generated by the evaporator can be returned.

[0034] In the vacuum insulated refrigerator in which multiple panels are joined, a joint may be disposed at edges where the multiple panels are connected. The third duct is disposed on one side of the joint. Accordingly, the joint can prevent heat leakage to the edges where the multiple panels are connected.

[0035] Second, one surface of the joint is formed in an inclined shape. This optimizes the effect of preventing heat leakage. The third duct includes a surface formed to be connectable to the inclined surface of the joint. Thus, the third duct can secure a sufficient amount of returning cold air without reducing the inner capacity of the refrigerator.

[0036] Third, the third duct may be disposed on both sides of the storage compartment with the evaporator interposed therebetween. The third duct separates the returning cold air into two streams to both sides of the storage compartment, thereby distributing the returning cold air evenly over the evaporator. Through this, frost formed on the evaporator can be dispersed, improving defrosting efficiency. It is possible to maintain smoother circulation of cold air inside the refrigerator.

[0037] Fourth, a harness formed in a structure that encloses a bundle of multiple wires or signal lines may be coupled to one surface of the third duct facing the joint. Accordingly, by disposing the harness between the joint and the third duct, the storage compartment space can be utilized efficiently.

[0038] Fifth, an inclined tapered portion may be formed on a surface opposite to a discharge port of the third duct. Through this, it is possible to maintain smooth flow of cold air discharged from the third duct toward the evaporator while minimizing resistance.

[0039] Sixth, a defrost heater disposed on the evaporator may be extended to the discharge port of the third duct. This enables removal of freezing at the discharge port of the third duct.[Description of Drawings]

[0040] FIG. 1 is a perspective view showing the exterior of a refrigerator according to an embodiment of the present disclosure. FIG.2 is a conceptual view for explaining a vacuum insulator provided in the refrigerator of FIG.1. FIG. 3 is a conceptual view for explaining a third plate provided in the plate of FIG. 2. FIG. 4 is a conceptual view for explaining a heat transfer resistor provided in the plate of FIG. 3. FIG. 5 is a conceptual view showing ducts coupled to the inside of a refrigerator according to the present disclosure. FIG. 6 is a cross-sectional view taken along line VI-VI of FIG. 5, showing the first duct coupled to the first storage compartment. FIG. 7 is a cross-sectional view taken along line VII-VII of FIG. 5, showing the second duct coupled to the second storage compartment. FIG.8 is a conceptual view showing the third duct coupled to one side of the second duct in FIG.5. FIG. 9 is a conceptual view showing the cold air flow path structure and / or movement pathway in the storage compartment in FIG. 5. FIG. 10 is a conceptual view showing the first duct in FIG. 5. FIG. 10a shows the first duct as viewed from the front. FIG. 10b shows the first duct as viewed from the bottom. FIG. 11 is a conceptual view showing the second duct 125 in FIG. 5. FIG. 11a shows the second duct as viewed from the front. FIG. 11b shows the second duct as viewed from the bottom. FIG. 12 is a conceptual view showing the third duct in FIG. 8. FIG. 12a shows the third duct as viewed from the front. FIG. 12b shows the third duct as viewed from the side. FIG. 12c shows the third duct as viewed from above. FIG. 13 is a conceptual view showing a harness coupled to an inner side of a joint according to another embodiment of the present disclosure. FIG. 14 is a conceptual view showing third ducts arranged on both sides of the storage compartment according to yet another embodiment of the present disclosure. FIG. 15a is a conceptual view showing the arrangement of a first duct, a second duct, and / or a third duct in FIG. 14. FIG. 15b is a conceptual view transparently showing the arrangement of the first duct, second duct, and / or third duct in FIG. 15a. FIG. 16 is a front view showing the second duct and the third duct as viewed from the front in FIG. 15. FIG. 17 is a conceptual view showing a defrost heater disposed on one side of the evaporator in FIG. 16 and extended to a discharge port of the third duct. FIG. 18 is a conceptual view showing the arrangement of an insulation reinforcement disposed between the second panel and the evaporator in FIG. 5. FIG.19 is conceptual view for explaining a construction of the insulation reinforcement in FIG.18. FIG. 20 is a conceptual view showing the insulation reinforcement disposed inside the defrost water tray in FIG. 18. FIG. 21 is a conceptual view showing the insulation reinforcement disposed outside the defrost water tray in FIG. 18. [Mode for Invention]

[0041] Hereinafter, a common description which describes portions commonly defined across all embodiments of the present disclosure will be described.

[0042] Optionally, a heat insulator of the present disclosure may be provided as a single heat insulator. For example, the heat insulator may include: a first wall extending in one direction; and a second wall extending in a direction different from the one direction. Optionally, the heat insulator of the present disclosure may include a first heat insulator and a second heat insulator. The second heat insulator may be provided as a separate component distinct from the first heat insulator. The second heat insulator may be connected to the first heat insulator by a connector. In the present disclosure, the connector may be defined as a joint. The second heat insulator may include a portion extending in the same direction as the first heat insulator. The second heat insulator may include a portion extending in a direction different from the first heat insulator. The second heat insulator may include a portion connected to the first heat insulator, or may include a portion disposed to overlap the first heat insulator in at least one direction. The heat insulator may be a vacuum insulator including a vacuum space portion, or a non-vacuum insulator which does not include a vacuum space portion. The heat insulator may be a combination of the vacuum insulator and the non-vacuum insulator. The vacuum space portion provided in the second heat insulator may include a portion extending in the same direction as the vacuum space portion provided in the first heat insulator. The vacuum space portion provided in the second heat insulator may include a portion extending in a direction different from the vacuum space portion provided in the first heat insulator. The vacuum space portion provided in the second heat insulator may include a portion disposed to overlap the vacuum space portion provided in the first heat insulator in at least one direction. The heat insulator may be provided in the form of a panel. In the present disclosure, the following description will be given with respect to a "panel", for example, and an embodiment in which the term "panel" is replaced with the term "heat insulator" may also be included within the present disclosure. For example, in the present disclosure, the following description assumes that at least two panels of the main body form the exterior of the refrigerator, it may be understood or interpreted that at least two heat insulators of the main body form the exterior of the refrigerator.

[0043] Optionally, the refrigerator of the present disclosure may include a main body. The main body may include at least one storage compartment. The main body may further include a partition wall that separates a first storage compartment and a second storage compartment. A first storage compartment joint may include a first sub compartment joint, a second sub compartment joint, and / or a third sub compartment joint. The second storage compartment joint may be provided on one side of the second storage compartment. The second storage compartment joint may include a first joint, a second joint, and / or a third joint.

[0044] The partition wall may include the vacuum insulator and / or the non-vacuum insulator. The refrigerator of the present disclosure may include a door. The refrigerator of the present disclosure may include a machine compartment disposed on one side of the main body. In the machine compartment, one or more of the following may be arranged: a compressor, heat-dissipating components (e.g., a condenser, a heat-dissipating portion of a thermoelectric module, or a heat sink that exchanges heat with the heat-dissipating portion of the thermoelectric module), and a cooling fan. The machine compartment may include at least one of the following: a first cover (e.g., side cover) forming at least a portion of a first surface (e.g., side surface) for the machine compartment, a second cover (e.g., back cover) forming at least a portion of a second surface (e.g., rear surface), a third cover (e.g., upper cover) forming at least a portion of a third surface (e.g., top surface), a fourth cover (e.g., bottom cover) forming at least a portion of a fourth surface (e.g., bottom surface), and a fifth cover (e.g., front cover) forming at least a portion of a fifth surface (e.g., front surface). One or more of the first, second, third, fourth, and fifth covers may be provided as a single component or as multiple components. The machine compartment of the refrigerator of the present disclosure may include the heat insulator.

[0045] The panel may include one or more of a first plate, a second plate, and a side plate. A vacuum space portion may be provided between the first plate and the second plate. The refrigerator of the present disclosure may include at least one panel. The present disclosure may include: a first panel forming at least a portion of a first surface (e.g., side surface) of the refrigerator; a second panel forming at least a portion of a second surface (e.g., rear surface) of the refrigerator; a third panel forming at least a portion of a third surface (e.g., top surface) of the refrigerator; a fourth panel forming at least a portion of a fourth surface (e.g., bottom surface) of the refrigerator; and a fifth panel forming at least a portion of a fifth surface (e.g., front surface) of the refrigerator. One or more of the first, second, third, fourth, and fifth surfaces of the refrigerator may provide at least a portion of a wall forming the main body or at least a portion of a wall forming the door. One or more of the first, second, third, fourth, and fifth panels may be provided as a single component or as multiple components. The joint may be provided to connect edges of the refrigerator or to connect a first wall and a second wall which form the refrigerator's wall. The joint may be provided to connect the panel to another component (e.g., another panel). The joint may be provided to connect at least two or more of the first, second, third, fourth, and fifth panels. One or more of the first, second, third, fourth, and fifth panels may be provided in multiple parts, and the joint may be provided to connect the plurality of panels to each other. The joint may include a first surface, a second surface, and / or a third surface. The first surface of the joint may cover at least a portion of at least one of the first, second, third, fourth, and fifth panels. The second surface of the joint may cover at least a portion of at least another one of the first, second, third, fourth, and fifth panels. The third surface of the joint may be connected to the first surface of the joint and / or the second surface of the joint. The third surface of the joint may be connected to an corner of the first surface of the joint and / or an corner of the second surface of the joint. The third surface of the joint may be formed to be inclined with respect to at least one of the first surface of the joint and the second surface of the joint. At least some of the first, second, third, fourth, and fifth panels may be provided as a panel having a first thermal insulation performance per unit thickness, and at least some others of the first, second, third, fourth, and fifth panels may be provided as a panel having a second thermal insulation performance per unit thickness. The first thermal insulation performance and the second thermal insulation performance may be different from each other.

[0046] The heat insulator or refrigerator of the present disclosure may include a duct. The duct may include a first duct, a second duct, and / or a third duct. The first duct may supply cold air to the first storage compartment or the second storage compartment. The second duct may receive an evaporator. The third duct may be connected in communication with the first duct and the second duct. The third duct may include a first surface, a second surface, a third surface, a fourth surface, and / or a fifth surface. The first surface of the third duct may surround the first surface of the joint. The second surface of the third duct may surround the second surface of the joint. The third surface of the third duct may surround the third surface of the joint. The third duct may further include a fourth surface. The fourth surface of the third duct may be disposed to extend from the first surface of the third duct or face the second storage compartment. The fifth surface of the third duct may be disposed to extend from the second surface of the third duct or to face the evaporator.

[0047] The heat insulator or refrigerator of the present disclosure may include a block. The block may include a portion extending in the same direction as one or more of the first, second, third, fourth, and fifth panels. The block may include a portion extending in a different direction from one or more of the first, second, third, fourth, and fifth panels. The block may include a first surface (e.g., left surface), a second surface (e.g., right surface), a third surface (e.g., rear surface), a fourth surface (e.g., bottom surface), a fifth surface (e.g., top surface), and a sixth surface (e.g., front surface). Some of the first, second, third, fourth, and fifth surfaces of the refrigerator may be provided in the form of a panel, and some others of the first, second, third, fourth, and fifth surfaces of the refrigerator may be provided in the form of a block. The block may be provided as the non-vacuum insulator. For example, the block may be a block cover and / or polyurethane (PU) foam filling the inside of the block cover. The block may include one or more of a first block portion (e.g., side block portion), a second block portion (e.g., rear block portion or front block portion), and a third block portion (e.g., bottom block portion or top block portion). Each of the first, second, and third block portions may be provided in multiple parts. At least two or more of the first, second, and third block portions may be connected and provided as the joint. The third block portion may form one surface of the first storage compartment and / or may form one surface of the machine compartment. The third block portion may be provided as a partition wall, or may form one surface of the first storage compartment.

[0048] The heat insulator or refrigerator of the present disclosure may include an insulation reinforcing portion. The insulation reinforcing portion may include a portion connected to one side of the block or a portion formed to protrude from the block.

[0049] The heat insulator or refrigerator of the present disclosure may include a hinge. The hinge may be disposed on one side of the heat insulator. The hinge may be disposed on the main body and / or door of the refrigerator.

[0050] The hinge may include one or more of: a hinge fixing part that is coupled to at least one of the heat insulator, the main body of the refrigerator, and the door of the refrigerator; a hinge shaft; and a hinge connecting portion that protrudes and extends from the hinge fixing part. The hinge may include one or more of: a first hinge (e.g., upper hinge) disposed on one side of a wall forming the first storage compartment; a second hinge (e.g., middle hinge) disposed on the partition wall; and a third hinge (e.g., lower hinge) on a wall forming the second storage compartment. The heat insulator or refrigerator of the present disclosure may include one or more of: a hinge reinforcing frame for reinforcing the strength of the hinge; a cover to which the hinge is coupled; and a hinge reinforcing plate that is configured to be connected to or received in the panel. The hinge reinforcing frame may include one or more of first, second, third, and fourth frame portions. At least two of the first, second, third, and fourth frame portions may extend in different directions.

[0051] The heat insulator or refrigerator of the present disclosure may include a support frame. The support frame may support one surface of the panel. The support frame may include a coupling portion. The block may be supported on the machine compartment by the support frame. The support frame may include a first support frame and / or a second support frame.

[0052] The heat insulator or refrigerator of the present disclosure may include an inner cover. The inner cover may be disposed between the cover of the machine compartment and the hinge reinforcing frame (e.g., the first frame portion).

[0053] The heat insulator or refrigerator of the present disclosure may include a decoration. The decoration may be disposed on a surface of the heat insulator. The decoration may be disposed on a surface of the main body and / or door of the refrigerator. For example, the decoration may be disposed on an outer surface of the heat insulator or on an outer surface of the refrigerator.

[0054] The heat insulator or refrigerator of the present disclosure may include a hot line. The hot line may be disposed on a surface of the heat insulator. The decoration may be disposed on a surface of the main body and / or door of the refrigerator. The hot line may be disposed between the decoration and the surface of the heat insulator. The hot line may be disposed between the decoration and the surface of the refrigerator and / or between the decoration and the surface of the door.

[0055] The heat insulator or refrigerator of the present disclosure may include a casing. The casing may be an exterior casing or an interior casing. The exterior casing may be connected to the second plate. The exterior casing may be provided to cover at least a portion of the second plate. The exterior casing may be provided in contact with the second plate or spaced apart from the second plate by a predetermined distance. The interior casing may be connected to the first plate. The interior casing may be provided to cover at least a portion of the first plate. The interior casing may be provided in contact with the first plate or spaced apart from the first plate by a predetermined distance.

[0056] The heat insulator or refrigerator of the present disclosure may include a drawer and / or a drawer guide. The drawer guide may be provided with a first storage compartment drawer guide provided in the first storage compartment. The first storage compartment drawer guide may include at least one of a first plate (e.g., side plate), a second plate (e.g., bottom plate), a third plate (e.g., top plate), and a fourth plate (e.g., middle plate).

[0057] The drawer guide may include a second storage compartment drawer guide provided in the second storage compartment.

[0058] The heat insulator or refrigerator of the present disclosure may include a shelf and / or a shelf support frame.

[0059] [Detailed Description for Implementing the Invention] is divided into the foregoing [Common Description] and the following [Description Based on Drawings]. In the [Detailed Description for Implementing the Invention], each specific matter described for implementing the invention may be understood as an embodiment of the present disclosure. In the [Detailed Description for Implementing the Invention], a combination of at least two or more of the specific matters described for implementing the invention may also be understood as an embodiment of the present disclosure. For example, in the [Detailed Description for Implementing the Invention], each paragraph of the [Common Description] section or the section described based on the drawings, as well as a combination of such paragraphs, may be understood as an embodiment of the present disclosure. In another example, in the [Detailed Description for Implementing the Invention], each sentence of the [Common Description] section or the section described based on the drawings, as well as a combination of such sentences, may be understood as an embodiment of the present disclosure.

[0060] Hereinafter, based on each drawing, the [Description Based on Drawings] section describing the present disclosure will be set forth.

[0061] Referring to FIGS. 1 to 4, the heat insulator 10 of the present disclosure may include plates 11, 12, and 14. In the present disclosure, the term "plate" may refer to at least one of the first plate 11, the second plate 12, and the side plate 14. Optionally, the heat insulator of the present disclosure may include a vacuum space portion 15. The vacuum space portion 15 may be formed by walls provided by the plates 11, 12, and 14. The vacuum space portion 15 may have a thickness in a first direction. The plates 11, 12, and 14 may include: the first plate 11; and the second plate 12. The first plate 11 may include a portion extending in a direction different from the first direction. The second plate 12 may include a portion extending in another direction different from the first direction. Optionally, the plates may include a side plate 14 including a portion extending in the first direction. For example, the heat insulator 10 of the present disclosure may be provided such that the first plate 11, the second plate 12, and the side plate 14 may be each provided as separate components, and the separate components may be provided to be connected to one another. In another example, the heat insulator 10 of the present disclosure may be provided such that at least two of the first plate 11, the second plate 12, and the side plate 14 are integrally provided, and such that the separate components are connected to one another. In yet another example, the heat insulator 10 of the present disclosure may be provided such that portions connecting the first plate 11, the second plate 12, and the side plate 14 are each integrally provided. In this case, the first plate 11 may be provided as a separate component, and the separate components may be provided to be connected to one another. Alternatively, the second plate 12 may be provided as a separate component, and the separate components may be provided to be connected to one another. Alternatively, the side plate 14 may be provided as a separate component, and the separate components may be provided to be connected to one another. Optionally, the heat insulator 10 of the present disclosure may include a third plate disposed on at least a portion of the heat insulator 10 or connected to at least a portion of the plates 11, 12, 14. The third plate may include a portion provided to be thinner than or equal in thickness to the plates 11, 12, and 14. The third plate may include a portion provided to be thicker than the plates 11, 12, and 14. The third plate may be disposed in the vacuum space portion 15 or disposed outside the vacuum space portion 15. Examples of the third plate may include a heat transfer resistor 23, 26a, 26b, and 34, a deformation resistor 13, and the like, as described in the present disclosure.

[0062] Optionally, the heat insulator 10 of the present disclosure may include a heat transfer resistor 23, 26a, 26b, and 34 (thermal insulator) for reducing the amount of heat transfer between a first space provided adjacent to the first plate 11 and a second space provided adjacent to the second plate 12, or for reducing the amount of heat transfer between the first plate 11 and the second plate 12. A heat transfer resistor that reduces the amount of heat transfer by conduction may be defined as a conduction resistance sheet 26a and 26b, and a heat transfer resistor that reduces the amount of heat transfer by radiation may be defined as a radiation resistance sheet 23. The heat transfer resistor 23, 26a, 26b, and 34 may be provided as a porous material 34 or as a filler 34. A filler whose inside is filled with a porous material may be defined as the porous material 34. The heat transfer resistor 23, 26a, 26b, and 34 may include at least one of the radiation resistance sheet 23, the porous material 34, the filler 34, and the conduction resistance sheet 26a and 26b, or a mixture of at least two thereof. The heat transfer resistor 23, 26a, 26b, and 34 may be provided so as not to be connected to at least a portion of the plates 11, 12, and 14 or make contact with the plates 11, 12, and 14. A shield 24 may be provided for insulation outside the heat transfer resistor 23, 26a, 26b, and 34. A connecting frame 17 may be provided outside the heat transfer resistor 23, 26a, 26b, and 34. The heat insulator 10 may include a conduit penetrating the vacuum space portion 15. The conduit may be formed by providing a pipe wall 32 as a separate component, or may be provided in such a manner that the pipe wall 32 is omitted and only a through-hole is formed in the plate. The side plate 14 may be provided adjacent to the conduit, or the heat transfer resistor 23, 26a, 26b, and 34 may be provided adjacent to the conduit.

[0063] Optionally, the heat insulator 10 of the present disclosure may include a deformation resistor 13 connected to at least a portion of the plates 11, 12, and 14 to increase the internal deformation resistance of the plates 11, 12, and 14. When the deformation resistor is provided in the form of a plate, the deformation resistor may be referred to as a deformation resistant plate.

[0064] Optionally, the heat insulator 10 of the present disclosure may include a support 19 that is connected to at least a portion of the plates 11, 12, and 13 and holds the vacuum space portion 15. The support 19 may include a bar 20 having a portion extending in the first direction, which is the thickness direction of the vacuum space portion 15. The support 19 may include a support plate 22 having a portion extending in a direction different from the first direction. The support 19 may include a plurality of bars 20 and a connecting plate 21 connecting the plurality of bars 20. The support 19 may include at least one of the bars 20, the connecting plate 21, and the support plate 22 or a combination of at least two thereof.

[0065] Optionally, the heat insulator 10 of the present disclosure may include a component coupling portion that provides a portion on which the components 24, 28, and 32 are disposed or supported. For example, when the component coupling portion is provided in the form of a plate, the component coupling portion may be referred to as a component coupling plate. A component connected to the component coupling portion may include a pass-through component configured to penetrate at least a portion of the heat insulator 10 or at least a portion of the plates 11, 12, and 14. A component connected to the component coupling portion may include a surface component configured to be connected to a surface of the heat insulator 10 or to be connected to a surface of the plates 11, 12, and 14. The pass-through component may be a component that forms a path through which a fluid (e.g., electricity, refrigerant, water, and air) passes. The pass-through component may be provided in the form of a tube. The tube may include a straight tube and / or a curved tube. The tube may be provided in multiple parts, or may extend in one direction. The pass-through component may include at least one of the tube, a first lead-out portion, and a second lead-out portion. In the present disclosure, the term "fluid" is defined as any kind of object that flows. The fluid may include a moving solid, liquid, gas, and electricity. The pass-through component may be a component that forms a path through which a refrigerant for heat exchange passes, such as a suction line heat exchanger (SLHX) or a refrigerant pipe. The SLHX may be understood as a suction line heat exchanger that performs heat exchange between a refrigerant that has passed through the evaporator and a refrigerant before being introduced into the evaporator. The pass-through component may be a wire that supplies electricity to the apparatus. The pass-through component may be a component that forms a path through which air can pass, such as a duct or port along whose surface fluid flows. The port may include an exhaust port that provides a path for air to escape from a space formed between the first plate 11 and the second plate 12, in order to form the vacuum space portion 15. The pass-through component may be a path through which a fluid such as cooling water, hot water, ice, and defrost water can pass. Examples of the surface component may include peripheral insulation, a side panel, injected foam, pre-prepared resin, a hinge, a latch, a basket, a drawer, a shelf, a light, a sensor, an evaporator 7, a front decoration, a hotline, a heater, an outer cover, and an inner cover.

[0066] Through FIGS. 1 to 4, the terms plate, first plate, second plate, side plate, third plate, vacuum space portion, heat transfer resistor, conduction resistance sheet, radiation resistance sheet, porous material, filler, component coupling portion, joint, support, bar, support plate, connecting plate, deformation resistor, deformation resistance plate, component coupling portion, component coupling plate, pass-through component, surface component, duct, and port have been defined. In the present disclosure, when the above terms are used for portions other than the portions with respect to which the explanations of FIGS. 1 to 4 are described, the terms used shall be interpreted as defined in FIGS. 1 to 4.

[0067] In the present disclosure, the expression "object A is connected to object B" may be defined as object A being directly connected to at least a portion of object B, or at least a portion of object A being connected to at least a portion of object B through an intermedium disposed between objects A and B. In a modification, the expression "object A is connected to object B" may include object A and object B being integrally prepared in such a manner as to be connected by the aforementioned method. In the present disclosure, examples of connection may include supporting, combining, and sealing, as described below. In the present disclosure, the expression "object A is supported by object B" may be defined as object A being restricted in movement in one or more of the +X, -X, +Y, -Y, +Z, and -Z axis directions by object B. In the present disclosure, examples of supporting may include combining and sealing, as described below. In the present disclosure, the expression "object A is combined with object B" may be defined as object A being restricted in movement in one or more of the X, Y, and Z axis directions by object B. In the present disclosure, an example of combining may include sealing, as described below. In the present disclosure, the expression "object A is sealed to object B" may be defined as a state in which movement of fluid is not permitted at a portion where object A and object B are connected. In the present disclosure, at least a portion of one or more objects, i.e., object A and object B, may be defined as including: a portion of object A, the entirety of object A, a portion of object B, the entirety of object B, a portion of object A and a portion of object B, a portion of object A and the entirety of object B, the entirety of object A and a portion of object B, and the entirety of object A and the entirety of object B. In the present disclosure, the expression "plate A may be a wall defining space A" may be defined as at least a portion of plate A being a wall forming at least a portion of space A. That is, at least a portion of plate A may be a wall forming space A, or plate A may be a wall forming at least a portion of space A. In the present disclosure, a central portion of an object may be defined as a portion located in the center when the object is divided into three equal parts along the lengthwise direction of the object. A peripheral portion of the object may be defined as a portion located on one side or the other side of the central portion among the three equal parts. The peripheral portion of the object may include a surface adjoining the central portion and a surface opposite thereto. The surface opposite thereto may be defined as a border or corner of the object. In the present disclosure, the degree of deformation resistance indicates the extent to which the object resists deformation, which may be defined as a value determined by a shape including the thickness of the object, the material of the object, and the processing method of the object. In the present disclosure, the degree of heat transfer resistance indicates the extent to which the object resists heat transfer, which may be defined as a value determined by a shape including the thickness of the object, the material of the object, and the processing method of the object. In the present disclosure, the degree of heat transfer resistance may be defined as at least one of the degree of conduction resistance, the degree of radiation resistance, and the degree of convection resistance or a combination of at least two thereof. In the following description, the terms "upper side," "lower side," "right side," "left side," "front side," and "rear side" shall be understood with reference to the coordinate system illustrated in FIGS. 1 and 5. An example of "+Z" may mean "upper side," an example of "-Z" may mean "lower side," an example of "+Y" may mean "right side," an example of "-Y" may mean "left side," an example of "+X" may mean "front side," and an example of "-X" may mean "rear side." In this specification, the front-rear direction as used herein may be an example of the X-axis direction, the left-right direction may be an example of the Y-axis direction, and the up-down direction may be an example of the Z-axis direction.

[0068] The heat insulator 10 of the present disclosure may be applied to a refrigerator 1. The refrigerator 1 may include a main body 2 provided with a cavity 9 for storing storage items, and a door 3 provided to open and close the main body 2. A cold source for supplying cold air to the cavity 9 may be provided. For example, the cold source may be an evaporator 7 that evaporates refrigerant to take heat. The refrigerator may include a compressor 4 that compresses the refrigerant. The refrigerator may include a condenser 5 that condenses the compressed refrigerant. The condenser 5 may be connected to an expander 6 that expands the condensed refrigerant.

[0069] FIG. 5 is a conceptual view showing ducts coupled to the inside of a refrigerator according to the present disclosure.

[0070] FIG. 6 is a cross-sectional view taken along line VI-VI of FIG. 5, showing the first duct 121 coupled to the first storage compartment 106.

[0071] FIG. 7 is a cross-sectional view taken along line VII-VII of FIG. 5, showing the second duct 125 coupled to the second storage compartment 107.

[0072] FIG. 8 is a conceptual view showing the third duct 130 coupled to one side of the second duct 125 in FIG. 5.

[0073] FIG. 9 is a conceptual view showing the cold air flow path structure and / or movement pathway in the storage compartment in FIG. 5.

[0074] FIG. 10 is a conceptual view showing the first duct 121 in FIG. 5. FIG. 10a shows the first duct 121 as viewed from the front. FIG. 10b shows the first duct 121 as viewed from the bottom.

[0075] FIG. 11 is a conceptual view showing the second duct 125 in FIG. 5. FIG. 11a shows the second duct 125 as viewed from the front. FIG. 11b shows the second duct 125 as viewed from the bottom.

[0076] FIG. 12 is a conceptual view showing the third duct 130 in FIG. 8. FIG. 12a shows the third duct 130 as viewed from the front. FIG. 12b shows the third duct 130 as viewed from the side. FIG. 12c shows the third duct 130 as viewed from above.

[0077] The refrigerator according to the present disclosure includes a main body 100 and / or a door. The main body 100 forms the exterior of the refrigerator. The main body 100 may include a plurality of panels.

[0078] For example, at least two panels including the main body 100 include one 101 of first panels 101 and 102, the other 101 of the first panels 101 and 102, a second panel 103, a third panel 104, and / or a block 105. The second panel 103 forms one surface of the refrigerator. As one example of the one surface, it may form a rear surface of the refrigerator. The third panel 104 forms another surface of the refrigerator. As one example of the another surface, it may form an upper surface of the refrigerator. One 101 of the first panels 101 and 102 and the other 102 of the first panels 101 and 102 each form yet another surface of the refrigerator. As one example of the yet another surface, they may respectively form left and right sides of the refrigerator. One 101 of the first panels 101 and 102 and the other 102 of the first panels 101 and 102 are disposed to face each other in the Y-axis direction. The block 105 may form a further surface of the refrigerator. As an example of the further surface, the block 105 may form a bottom surface or one surface.

[0079] A machine compartment 111 may be installed on one side of the block 105. In this embodiment, the machine compartment 111 is illustrated as installed under the block 105.

[0080] Optionally, the main body 100 may include a fourth panel instead of the above-described block 105.

[0081] A vacuum insulator may form at least one of, or a portion of at least one of, one 101 of the first panels 101 and 102, the other 102 of the first panels 101 and 102, the second panel 103, the third panel 104, and / or the fourth panel. One 101 of at least first panels 101, the other 102 of the first panels 101 and 102, the second panel 103, the third panel 104, and / or the fourth panel may be formed in a polygonal or rectangular shape.

[0082] In this embodiment, one 101 of the first panels 101 and 102, the other 102 of the first panels 101 and 102, the second panel 103, and / or the third panel 104 may include a vacuum insulator. However, the block 105, which will be described later, is illustrated as including a non-vacuum insulator.

[0083] A storage compartment is formed inside the main body 100. The storage compartment is formed to be open toward one side (e.g., the front) of the main body 100. The storage compartment includes one or more of a first storage compartment 106 and a second storage compartment 107.

[0084] The first storage compartment 106 and the second storage compartment 107 may be disposed to be spaced apart in the Z-axis direction or Y-axis direction of the main body 100.

[0085] The door may be disposed to open and close the storage compartment. The door includes one or more of a first storage compartment door 108 and a second storage compartment door 109. The first storage compartment 106 and the second storage compartment 107 may be partitioned off by a partition wall 110. The partition wall 110 may horizontally extend in the X-axis direction and the Y-axis direction from one surface of one 101 of the first panels 101 and 102 to one surface of the other 102 of the first panels 101 and 102.

[0086] The partition wall 110 may be positioned between one-third and two-thirds of the height upward from the block 105, when the height (vertical distance) between the third panel 104 and the block 105 is divided into three equal parts. In this embodiment, the partition wall 110 is illustrated as disposed approximately one-third of the height upward from the block 105.

[0087] The partition wall 110 may be formed in a polygonal or rectangular shape. The partition wall 110 may have a thickness in the Z-axis direction. The partition wall 110 may extend longer in the X-axis direction and the Y-axis direction relative to the thickness.

[0088] An opening is formed on one surface of the main body 100. Storage items to be kept in the storage compartment, for example food, can enter and exit the storage compartment through the opening.

[0089] The machine compartment 111 includes one of at least two first covers 1111a and 1111b, the other of the first covers 1111a and 1111b, a second cover 1112, a third cover 1113, and / or a fourth cover. The second cover 1112 forms one surface of the machine compartment 111. As one example of the one surface, it may form arear surface of the machine compartment 111. The third cover 1113 forms another surface of the machine compartment 111. As one example of the another surface, it may form a front surface of the machine compartment 111. One of the first covers 1111a and 1111b and the other of the first covers 1111a and 1111b each forms yet another surface of the machine compartment 111. As one example of the yet another surface, they may respectively form left and right sides of the machine compartment 111. One of the first covers 1111a and 1111b and the other of the first covers 111a and 111b may be disposed to face each other in the Y-axis direction. In this embodiment, one of the first covers 1111a and 111b forms the left side of the machine compartment 111, and the other of the first covers 1111a and 111b forms the right side of the machine compartment 111. The fourth cover forms a further surface of the machine compartment 111. As one example of the further surface, the fourth cover may form a bottom surface or one surface. The further surface of the machine compartment 111 may be formed to be open. As one example of the further surface, it may be an upper surface of the machine compartment 111. A further surface of the machine compartment 111 may be configured to be covered by the block 105. The block 105 is configured to separate the storage compartment and machine compartment 111 of the main body 100.

[0090] The block 105 may be supported on the machine compartment 111 by a support frame. The support frame may be provided in plurality. The block 105 may be supported on the machine compartment 111 by a plurality of support frames. The support frame may extend in one direction. As one example of the one direction, it may mean the Y-axis direction. One side of the support frame may be coupled to one of the plurality of first covers 1111a and 1111b, and the other side of the support frame may be coupled to the other of the plurality of first covers 1111a and 1111b.

[0091] One surface of the block 105 may be coupled to one side of a first cover. The first covers 1111a and 1111b may be provided in plurality. One surface of the block 105 may be coupled to one side of the plurality of first covers 1111a and 1111b. As one example of the one surface of the block 105, it may mean a lower surface of the block 105. As one example of the one side of the first covers 1111a and 1111b, it may mean an upper side of the first covers 1111a and 1111b.

[0092] The support frame may include a first support frame 112 and / or a second support frame. The first support frame 112 is disposed to be spaced apart from the third cover 1113. The second support frame is disposed to be spaced apart from the first support frame 112 in the X-axis direction. The second support frame is disposed to be spaced apart from the second cover 1112.

[0093] An evaporator 113, among cycle components, is disposed on one side of the second storage compartment 107. As one example of the one side of the second storage compartment 107, it may be a rear side of the second storage compartment 107.

[0094] The block 105 may include a non-vacuum insulator. As one example of the non-vacuum insulator, the block 105 may be molded from a PU foaming liquid filling the inside of a cover of the block 105. The block 105 includes one of at least two first block portions 1051 and 1052, the other of the first block portions 1051 and 1052, a second block portion 1053, and / or a third block portion 1057.

[0095] The first block portions 1051 and 1052 are formed to extend in the first direction. The plurality of first block portions 1051 and 1052 are disposed to be spaced apart and / or face each other in the second direction. The second block portion 1053 is formed to extend in the second direction so as to connect one side of each of the plurality of first block portions 1051 and 1052.

[0096] The second block portion 1053 may be disposed to be connected to one surface of the second panel 103. As one example of the one surface of the second panel 103, it may mean a rear surface of the second storage compartment 107. The evaporator 113 may be disposed on one side of the second block portion 1053. As one example of the one side of the second block portion 1053, it may mean an upper side of the second block portion 1053.

[0097] The third block portion 1057 is formed to extend in the first direction and the second direction. The third block portion 1057 is configured to connect the first block portions 1051 and 1052 and the second block portion 1053. The plurality of first block portions 1051 and 1052 are disposed in the second direction on opposite sides of one surface of the third block portion 1057. As one example of the one surface of the third block portion 1057, it may form an upper surface of the block 105.

[0098] The third block portion 1057 is configured to partition the second storage compartment 107 and the machine compartment 111. One surface of the third block portion 1057 may form one surface of the second storage compartment 107. As one example of the one surface of the second storage compartment 107, it may form a lower surface of the second storage compartment 107. Another surface of the third block portion 1057 may form one surface of the machine compartment 111. As one example of the one surface of the machine compartment 111, it may form an upper surface of the machine compartment 111.

[0099] Another surface of the third block portion 1057 may form one surface of the machine compartment 111, and as one example of the one surface, it may form an upper surface.

[0100] The first block portion may be disposed at an corner where the first panel and the third block portion 1057 are connected. One of the plurality of first block portions 1051 and 1052 is disposed at an corner where one 101 of the plurality of first panels 101 and 102 and the third block portion 1057 are connected. The other of the plurality of first block portions 1051 and 1052 is disposed at an corner where the other 102 of the plurality of first panels 101 and 102 and the third block portion 1057 are connected.

[0101] The second block portion 1053 is disposed at an corner where the second panel 103 and the third block portion 1057 are connected.

[0102] The first block portions 1051 and 1052 and the second block portion 1053 may be disposed at edges where the first panels 101 and 102 and the second panel 103 are connected, thereby serving as a joint. The plurality of first block portions 1051 and 1052 and / or the second block portion 1053 may improve thermal insulation performance by preventing heat leakage.

[0103] A recess portion 1054 may be formed on one surface of the second block portion 1053. As one example of the one surface of the second block portion 1053, it may be an upper surface. The recess portion 1054 is formed to be recessed from one side to the other side in the Z-axis direction. The recess portion 1054 may be formed to be inclined from both sides of the second block portion 1053 toward the center of the second block portion 1053. A first pass-through part 1055 may be formed at the center of the recess portion 1054. The first pass-through part 1055 is configured to accommodate a portion of a drain pipe through which defrost water flows. The defrost water is generated by melting frost attached to the evaporator 113 by means of the defrost heater 127.

[0104] The pass-through part 1055 may be formed to penetrate the center of the second block portion 1053 in the Z-axis direction. One side of the third block portion 1057 may be disposed to overlap the second block portion 1053 in the Z-axis direction. The first pass-through part 1055 may be formed to penetrate the center of the second block portion 1053 and the third block portion 1057, which are arranged to overlap in the Z-axis direction. One side of the first pass-through part 1055 is communicatively connected to a drain pipe connected to a lower side of a portion accommodating the evaporator 113. The other side of the first pass-through part 1055 is communicatively connected to a drain of the machine compartment 111.

[0105] The second pass-through part 1056 may be formed to penetrate a peripheral portion of the second block portion 1053 in the Z-axis direction so that a pass-through component such as an electric wire or a signal line passes through the block 105. The second pass-through part 1056 may be formed to penetrate a peripheral portion of the second block portion 1053 and / or the third block portion 1057. One side of the second pass-through part 1056 is communicatively connected to the second storage compartment 107 (first space). The other side of the second pass-through part 1056 is communicatively connected to the machine compartment 111.

[0106] The block 105 may further include an insulation reinforcing portion. The insulation reinforcing portion may enhance the thermal insulation performance of the block 105 by utilizing a portion of the machine compartment 111 that does not affect the inner capacity of the refrigerator.

[0107] For example, the insulation reinforcing portion may include a first insulation reinforcing portion 1058. The first insulation reinforcing portion 1058 is formed to protrude toward the machine compartment 111 from one surface of the third block portion 1057. The first pass-through part 1055 may be formed to penetrate the center of the second block portion 1053, the third block portion 1057, and / or the insulation reinforcing portion in the Z-axis direction. The second pass-through part 1056 may be formed to penetrate a portion or the center of the second block portion 1053, the third block portion 1057, and / or the insulation reinforcing portion in the Z-axis direction.

[0108] Through this, the first insulation reinforcing portion 1058 may extend the length of a heat transfer pathway of the pass-through part, thereby reinforcing the weak insulation of the pass-through part.

[0109] The insulation reinforcing portion may further include a second insulation reinforcing portion 1059, which is formed to protrude toward the first panels 101 and 102 from one surface of the third block portion 1057. As one example of the one surface of the third block portion 1057, it may be a left surface or right surface of the third block portion 1057.

[0110] Through this, the second insulation reinforcing portion 1059 may enclose one surface of the first panels 101 and 102 as heat insulators, for example, a lower surface of the first panels 101 and 102, to prevent heat leakage through side portions of the heat insulators, thereby reinforcing the thermal insulation performance.

[0111] The insulation reinforcing portion may include a second insulation reinforcing portion 1059 that protrudes toward the second panel 103 from another surface of the third block portion 1057. As one example of the another surface of the third block portion 1057, it may be a rear surface of the third block portion 1057.

[0112] Through this, the third insulation reinforcing portion may enclose one surface of the second panel 103 as a heat insulator, for example, a lower surface of the second panel 103, to prevent heat leakage through a side portion of the heat insulator, thereby reinforcing the thermal insulation performance.

[0113] The machine compartment 111 is configured to accommodate part of a refrigeration cycle apparatus, for example, a compressor, a condenser, an expander, etc.

[0114] A heat insulator including each of the plurality of panels includes a first plate 115a, 115b, and 115c, a second plate 116a, 116b, and 116c, a side plate 117a and 117b, and a support. The first plate 115a, 115b, and 115c is disposed toward the storage compartment formed inside the main body 100. The second plate 116a, 116b, and 116c is disposed toward an outer side of the main body 100. The side plate 117a and 117b extends from the first plate 115a, 115b, and 115c and is connected to the second plate 116a, 116b, and 116c. The first plate 115a, 115b, and 115c, the second plate 116a, 116b, and 116c, and the side plate 117a and 117b are formed in the shape of a thin metal sheet. The side plate 117a and 117b and the second plate 116a, 116b, and 116c may be welded or sealed.

[0115] Heat leakage may occur at the edges of the refrigerator. To insulate such heat leakage, a joint may be coupled to the edges. At edges where a plurality of panels is connected, thin metal sheets may be arranged to overlap each other and / or the overlapping sheets may be sealed or welded together, which can result in heat leakage. To insulate such heat leakage, a joint is coupled to the edges where the plurality of panels is connected.

[0116] The joint includes a joint cover made of plastic material. The joint also includes an insulating layer. The insulating layer may be molded from polyurethane foam inside the joint cover. Through this, the joint can prevent heat leakage at the edges where the panels are connected.

[0117] The joint may include a first joint. The first joint may be disposed in the first storage compartment 106. The first joint 118a and 118b may be provided in plurality. The first joint may be disposed at the corner where a first panel and the second panel 103 are connected. The joint includes at least two first joints 118a and 118b disposed in the first storage compartment 106. One 118a of the first joints 118a and 118b is disposed at the corner where one 101 of the plurality of first panels 101 and 102 and the second panel 103 are connected. The other 118b of the first joints 118a and 118b is disposed at the corner where the other 102 of the plurality of first panels 101 and 102 and the second panel 103 are connected.

[0118] One 118a of the first joints 118a and 118b includes a first surface 1181 which abuts one 101 of the first panels 101 and 102. One 118a of the first joints 118a and 118b includes a second surface 1182 which abuts the second panel 103. One side of the first surface 1181 of one 118a of the first joints 118a and 118b and one side of the second surface 1182 thereof may meet perpendicularly, forming a right angle. One 118a of the first joints 118a and 118b includes a third surface 1183 connecting the other side of the first surface 1181 and the other side of the second surface 1182. The third surface 1183 of one 118a of the first joints 118a and 118b may be formed to be inclined with respect to the first surface 1181 or the second surface 1182. One 118a of the first joints 118a and 118b extends in the Z-axis direction.

[0119] Another 118b of the first joints 118a and 118b may be configured in the same manner as the one 118a of the first joints 118a and 118b, except for its position.

[0120] Yet another (not shown) of the first joints 118a and 118b may be disposed at the corner where the third panel 104 and the second panel 103 are connected. The yet another of the first joints 118a and 118b may extend in the Y-axis direction.

[0121] A first joint may be disposed at an corner where a first panel and the third panel 104 are connected. A further one (not shown) of the first joints 118a and 118b is disposed at the corner where one 101 of the plurality of first panels 101 and 102 and the third panel 104 are connected. The further one of the first joints 118a and 118b may extend in the X-axis direction. The further one (not shown) of the first joints 118a and 118b is disposed at the corner where the other 102 of the plurality of first panels 101 and 102 and the third panel 104 are connected.

[0122] A first duct 121 is disposed on one side of the first storage compartment 106, for example, on a rear side of the first storage compartment 106. The first duct 121 may be coupled to the second panel 103 so as to cover one side of the second panel 103. One side of the first duct 121 may be configured to cover one 118a of the first joints 118a and 118b. The other side of the first duct 121 may be configured to cover another 118b of the first joint 118a and 118b.

[0123] The first duct 121 may extend in the Z-axis direction and the Y-axis direction.

[0124] The first duct 121 forms a cold air passage to supply cold air to the first storage compartment 106.

[0125] A first discharge hole 122 may be formed in the first duct 121. The first discharge hole 122 may be provided in plurality. A plurality of first discharge holes 122 may be formed in the first duct 121. The plurality of first discharge holes 122 may be disposed to be spaced apart in the Z-axis direction and the Y-axis direction. Through this, the first duct 121 can supply cold air uniformly across the first storage compartment 106 through the plurality of first discharge holes 122.

[0126] A communication port 123 may be formed at the center of one side of the first duct 121 to communicate with a second duct 125 to be described later. One side of the first duct 121 may refer to a lower side of the first duct 121, for example. A through-hole is formed at the center of the partition wall 110. One side of the through-hole is communicatively connected to the communication port 123. The other side of the through-hole may be communicatively connected to the second duct 125 to be described later.

[0127] An intake hole 124 may be formed at a peripheral portion of one side of the first duct 121. The intake hole 124 is formed to penetrate so as to draw in cold air from the first storage compartment 106. The intake hole 124 may be connected to a third duct 130 to be described later, and the cold air may return to the evaporator 113 through the third duct 130.

[0128] The intake hole 124 may be formed at an corner where the first duct 121 and the partition wall 110 meet. The intake hole 124 may be formed to be inclined at a predetermined angle with respect to one surface of the first duct 121 and one surface of the partition wall 110. The intake hole 124 may extend in the direction in which it is inclined. The intake hole 124 may be provided in plurality. A plurality of intake holes 124 may be arranged to be spaced apart in the Y-axis direction.

[0129] The joint may include a second joint. The joint may be disposed in the second storage compartment 107. The second joints 119a and 119b may be provided in plurality. The second joint may be disposed at the corner where the first panel and the second panel 103 are connected. The joint includes at least two second joints 119a and 119b disposed in the second storage compartment 107. One 119a of the second joints 119a and 119b is disposed at the corner where one 101 of the plurality of first panels 101 and 102 and the second panel 103 are connected. Another 119a of the second joints 119a and 119b is disposed at the corner where another 102 of the plurality of first panels 101 and 102 and the second panel 103 are connected.

[0130] One 119a of the second joints 119a and 119b includes a first surface 1191 which abuts one 101 of the first panels 101 and 102. One 119a of the second joints 119a includes a second surface 1192 which abuts the second panel 103. One side of the first surface 1191 of one 119a of the first joints 119a and 119b and one side of the second surface 1192 thereof may meet perpendicularly, forming a right angle. One 119a of the first joints 119a and 119b includes at least three third surfaces 1193a, 1193b, 1193c, and 1193d which connecting the other side of the first surface 1191 and the other side of the second surface 1192. One of the third surfaces 1193a, 1193b, 1193c, and 1193d of one 119a of the second joints 119a and 119b may extend in the Y-axis direction from the first surface 1191. Another 1193a of the third surfaces 1193a, 1193b, 1193c, and 1193d of the one 119a of the second joints 119a and 119b may extend in the X-axis direction toward the second surface 1192. Yet another 1193b of the third surfaces 1193a, 1193b, 1193c, and 1193d of the one 119a of the second joints 119a and 119b may be formed to be inclined toward one side of the corner of the second surface 1192. A further one 1193c of the third surfaces 1193a, 1193b, 1193c, and 1193d of the one 119a of the second joints 119a and 119b may extend in the Y-axis direction from the another 1193b of the third surfaces 1193a, 1193b, 1193c, and 1193d toward the evaporator 113. A further one 1193d of the third surfaces 1193a, 1193b, 1193c, and 1193d of the one 119a of the second joints 119a and 119b may extend in the X-axis direction from one side of the further one 1193c of the third surfaces 1193a, 1193b, 1193c, and 1193d of the one 119a and be connected to one side of the corner of the second surface 1192.

[0131] One 119a of the second joints 119a and 119b extends in the Z-axis direction.

[0132] Another 119a of the second joints 119b and 119b may be configured in the same manner as the one of the second joints 119a and 110b, except for its position.

[0133] Insulation blocks 120a and 120b may be connected to one surface of the second joints 119a and 119b. The insulation blocks 120a and 120b are configured to expand the insulation area of the second joints 119a and 119b in the second storage compartment 107. The insulation blocks 120a and 120b may extend along one surface of the first panels 101 and 102 in the X-axis direction and the Z-axis direction. The insulation blocks 120a and 120b is configured to cover the first panels 101 and 102. The insulation blocks 120a and 120b may be molded from PU foam. The second joints 119a and 119b and the insulation blocks 120a and 120b may be integrally formed. Through this, the insulation blocks 120a and 120b can improve thermal insulation performance.

[0134] A drawer guide plate 1201 may be disposed on the insulation blocks 120a and 120b. The drawer guide plate 1201 may be injection-molded using a plastic material. A drawer guide protruding from the drawer guide plate 1201 is configured to guide the pulling out and / or pushing in of the drawer of the first storage compartment 106.

[0135] The second duct 125 is disposed on one side of the second storage compartment 107, for example, on a rear side of the second storage compartment 107. The second duct 125 may be coupled to the second panel 103 so as to cover the other side of the second panel 103. One side of the second duct 125 may be configured to cover one surface of one 119a of the second joints 119a and 119b, and the other side of the second duct 125 may be configured to cover one surface of the other 119b of the second joints 119a and 119b.

[0136] The second duct 125 may extend in the Z-axis direction and the Y-axis direction.

[0137] The second duct 125 forms a cold air passage to supply cold air to the second storage compartment 107.

[0138] A second discharge hole 126 may be formed in the second duct 125. The second discharge hole 126 may be provided in plurality. A plurality of second discharge holes 126 may be formed in the second duct 125. The plurality of second discharge holes 126 may be arranged to be spaced apart in the Z-axis direction and the Y-axis direction. Through this, the second duct 125 can supply cold air uniformly across the second storage compartment 107 through the plurality of second discharge holes 126.

[0139] An evaporator 113 is installed inside the second duct 125 so as to be accommodated therein. A defrost heater 127 is disposed on the evaporator 113. The defrost heater 127 may heat the evaporator 113 to prevent frost from forming on the evaporator 113. A defrost water tray 128 is disposed inside the second duct 125. The defrost water tray 128 is disposed on one side of the evaporator 113. Here, one side of the evaporator 113 may refer to a lower side of the evaporator 113, for example.

[0140] The defrost water tray 128 may temporarily store defrost water generated from the evaporator 113.

[0141] A circulation fan 129 may be installed on another side of the evaporator 113. The circulation fan 129 is configured to deliver cold air generated by the evaporator 113 to the first duct 121 through the through-hole and the communication port 123.

[0142] An intake duct 1291 is installed on one side of the second duct 125. The intake duct 1291 is communicatively connected to one side of the second storage compartment 107. Here, one side of the second storage compartment 107 may refer to a lower side of the second storage compartment 107, for example.

[0143] The other side of the intake duct 1291 is communicatively connected to the evaporator 113. The circulation fan 129 forms a circulation flow of cold air between the second storage compartment 107 and the first storage compartment 106.

[0144] A cold air movement pathway will be discussed as follows. Air moves from the second storage compartment 107 to the evaporator 113 through the intake duct 1291. The evaporator 113 generates cold air through heat exchange between the refrigerant and the air. The generated cold air moves to the first duct 121 through the through-hole of the partition wall 110 and the communication port 123. The cold air in the first duct 121 is discharged into the first storage compartment 106 through the discharge holes of the first duct 121.

[0145] The cold air in the first storage compartment 106, after cooling the food stored in the first storage compartment 106, may be drawn in through the intake hole 124 formed on one side of the first duct 121 and / or may return to the second duct 125 through a third duct 130 to be described later.

[0146] The third duct 130 is disposed on one side of the second storage compartment 107. The third duct 130 may be disposed between one side of the second duct 125 and one of the first panels 101 and 102. The third duct 130 is communicatively connected to the intake hole 124 of the first duct 121 and the second duct 125. Through this, the third duct 130 can deliver the air in the first storage compartment 106 to the evaporator 113 accommodated in the second duct 125.

[0147] The third duct 130 may be disposed on one side of at least one of the second joints 119a and 119b. In this embodiment, the third duct 130 is illustrated as disposed on one surface of one 119a of the second joints 119a and 119b.

[0148] The third duct 130 may include third surfaces 1303a, 1303b, and 1303c which abut the third surfaces 1193a, 1193b, 1193c, and 1193d of the second joints 119a and 119b. At least three third surfaces may be provided. The third duct 130 includes at least three third surfaces 1303a, 1303b, and 1303c which abut the third surfaces 1193a, 1193b, 1193c, and 1193d of the second joints 119a and 119b. One 1303a of the third surfaces 1303a, 1303b, and 1303c of the third duct 130 is disposed to face and / or be connected to one 1193a of the third surfaces 1193a, 1193b, 1193c, and 1193d of the second joints 119a and 119b. Another 1303b of the third surfaces 1303a, 1303b, and 1303c of the third duct 130 is disposed to face and / or be connected to another 1193b of the third surfaces 1193a, 1193b, 1193c, and 1193d of the second joints 119a and 119b. Yet another 1303c of the third surfaces 1303a, 1303b, and 1303c of the third duct 130 is disposed to face and / or be connected to yet another 1193c of the third surfaces 1193c, 1193b, 1193c, and 1193d of the second joints 119a and 119b.

[0149] One 1303b of the third surfaces 1303a, 1303b, and 1303c of the third duct 130 may include an inclined surface corresponding to the inclined surface 1193b among the third surfaces 1193a, 1193b, 1193c, and 1193d of the second joints 119a and 119b.

[0150] The third duct 130 includes a first surface 1301 facing the second storage compartment 107 and a second surface 1302 facing one side of the evaporator 113. The first surface 1301 of the third duct 130 may form the same plane as one surface of the second duct 125 or may extend parallel to one surface of the second duct 125. In this embodiment, one surface of the third duct 130 may form the same plane as one surface of the second duct 125.

[0151] The third duct 130 extends in the Z-axis direction along the third surfaces 1193a, 1193b, 1193c, and 1193d of the second joints 119a and 119b.

[0152] An intake port 131 is formed on one side of the third duct 130. The intake port 131 is formed inclinedly to correspond to the inclined intake hole 124 of the first duct 121.

[0153] The intake port 131 is communicatively connected to the intake hole 124. The intake port 131 of the third duct 130 may be accommodated inside a peripheral portion of the partition wall 110. A receiving hole for the intake port 131, which accommodates the intake port 131 inside the peripheral portion of the partition wall 110, may be formed to penetrate in the Z-axis direction.

[0154] A discharge port 132 is formed on the other side of the third duct 130. The discharge port 132 may be disposed at a peripheral portion of one side surface of the evaporator 113 positioned lower than an imaginary line horizontally passing through a center portion of the evaporator 113 in the Y-axis direction. The discharge port 132 is formed to penetrate the second surface 1302 of the third duct 130 in the Y-axis direction. The discharge port 132 is formed to open toward the evaporator 113.

[0155] A tapered portion 133 may be formed inclinedly on one surface of the third duct 130 facing the opposite direction of the discharge port 132. Through this, the tapered portion 133 can redirect the airflow along the third duct 130 toward the evaporator 113, thereby minimizing flow resistance.

[0156] FIG. 13 is a conceptual view showing a harness 114 coupled to an inner side of a joint according to another embodiment of the present disclosure.

[0157] In this embodiment, a third duct 130 may be coupled to one side of the second joint. In this embodiment, a harness 114 may be coupled to the other side of the second joint. This embodiment differs from the embodiments described in FIGS. 5 to 12 in that the third duct 130 is coupled to one side of one 119a of the second joints 119a and 119b, and / or the harness 114 is coupled to an inner side of the other 119b of the second joints 119a and 119b.

[0158] The harness 114 is configured to enclose a plurality of electric wires or signal lines. The harness 114 may supply power or transmit control signals to electrical components such as a motor, lamp, etc. embedded in the refrigerator.

[0159] A second pass-through part 1056 may be formed in the second joint so as to penetrate in the Z-axis direction. The second pass-through part 1056 may be formed in the other 119b of the second joints 119a and 119b so as to penetrate in the Z-axis direction. The harness 114 may penetrate the partition wall 110 and be drawn out into the first storage compartment 106. A lead-out hole for drawing out the harness 114 may be formed at a peripheral portion of the partition wall 110 so as to penetrate in the Z-axis direction.

[0160] The harness 114 may penetrate the block 105 or be drawn out into the machine compartment 111.

[0161] However, the positions of the third duct 130 and the harness 114 are not limited to this. For example, the harness 114 may be coupled to an inner side of one 119a of the second joints 119a and 119b, and / or the third duct 130 may be coupled to one side of the other 119b of the second joints 119a and 119b.

[0162] Other components are identical or similar to those of the embodiments described above with reference to FIGS. 1 to 12, so redundant description will be omitted.

[0163] FIG. 14 is a conceptual view showing a third duct 230a and 230b arranged on one side or both sides of the storage compartment according to yet another embodiment of the present disclosure.

[0164] FIG. 15a is a conceptual view showing the arrangement of a first duct 221, a second duct 225, and / or a third duct 230a and 230b in FIG. 14. FIG. 15b is a conceptual view transparently showing the arrangement of the first duct 221, second duct 225, and / or third duct 230a and 230b in FIG. 15a.

[0165] FIG. 16 is a front view showing the second duct 225 and the third duct 230a and 230b as viewed from the front in FIG. 15.

[0166] In this embodiment, the third duct 230a and 230b may be coupled to one side of the second joint. The third duct may be provided in plurality. This embodiment differs from the embodiments described in FIGS. 5 to 13 in that a plurality of third ducts 230a and 230b are respectively coupled to one side of one 219a of the second joints 219a and 219b and one side of the other 219b of the second joints 219a and 219b.

[0167] The harness 134 may be coupled to one side surface of the third duct. The harness may be disposed between one surface of the second joint and one surface of the third duct. The harness 134 may be coupled to one side surface of any one of the plurality of third ducts 230a and 230b. The harness 134 may be disposed between one surface of any one of the second joints 219a and 219b and one surface of one 230a of the third ducts 230a and 230b.

[0168] A first intake hole 222a is formed on one side of the first duct 221 so as to communicate with the first storage compartment 106. A first intake port 231a may be formed on one side of the third duct. The first intake port 231a may communicate with the first intake hole 222a. A first discharge port 232a may be formed on the other side of the third duct. The first discharge port 232a may be communicatively connected to one side of the second duct 225 toward the evaporator 113. A first tapered portion 233a may be formed inclinedly on the other side of the third duct. Through this, the discharge flow through the third duct can be smoothly maintained. The first intake port 231a is formed on one side of one 230a of the plurality of third ducts 230a and 230b. The first intake port 231a communicates with the first intake hole 222a. The first discharge port 232a is communicatively connected to the other side of one 230a of the third ducts 230a and 230b so as to communicate with one side of the second duct 225 toward the evaporator 113. The first tapered portion 233a is formed inclinedly on the other side of one 230a of the third ducts 230a and 230b. Through this, the discharge flow of one 230a of the third ducts 230a and 230b can be smoothly maintained.

[0169] A second intake hole 222b is formed on the other side of the first duct 221 so as to communicate with the first storage compartment 106.

[0170] A second intake port 231b may be formed on one side of the third duct. The second intake port 231b may communicate with the second intake hole 222b. A second discharge port 232b may be connected to the other side of the third duct so as to communicate with the second duct 225 toward the evaporator 113. A second tapered portion 233b may be formed inclinedly on the other side of the third duct. Through this, the discharge flow of the third duct can be smoothly maintained. The second intake port 231b is formed on one side of another 230b of the plurality of third ducts 230a and 230b. The second intake port 231b communicates with the second intake hole 222b. The second discharge port 232b is communicatively connected to the other side of another 230b of the third ducts 230a and 230b so as to communicate with the other side of the second duct 225 toward the evaporator 113. A second tapered portion 233b is formed inclinedly on the other side of another 230b of the third ducts 230a and 230b. Through this, the discharge flow of another 230b of the third ducts 230a and 230b can be smoothly maintained.

[0171] Other components are identical or similar to those of the embodiments described above with reference to FIGS. 1 to 13, so redundant description will be omitted.

[0172] FIG. 18 is a conceptual view showing the arrangement of an insulation reinforcement 335 disposed between the second panel 103 and the evaporator 113 in FIG. 5.

[0173] FIG. 19 is a conceptual view for explaining a construction of the insulation reinforcement 335 in FIG. 18. FIG. 19a shows a reinforcement cover 3351 as viewed from the front. FIG. 19b shows an insulating layer 3352 to fill the inside of the reinforcement cover 3351 as viewed from the front. FIG. 19c is a cross-sectional view taken along XIX-XIX in FIG. 19, showing how the reinforcement cover 3351 of FIG. 19a and the insulating layer 3352 of FIG. 19b are combined.

[0174] FIG. 20 is a conceptual view showing the insulation reinforcement 335 disposed inside the defrost water tray 128 in FIG. 18.

[0175] FIG. 21 is a conceptual view showing the insulation reinforcement 335 disposed outside the defrost water tray 128 in FIG. 18.

[0176] This embodiment differs from the embodiments described in FIGS. 1 to 17 in that the insulation reinforcement 335 is arranged between the second panel 103 and the evaporator 113.

[0177] The thermal reinforcement 335 is configured to cover one surface of the second storage compartment 107, for example, a rear surface of the second storage compartment 107. The second duct 125 is configured to cover the insulation reinforcement 335. The insulation reinforcement 335 may extend in the Y-axis direction and the Z-axis direction. A cold air passage is formed between the insulation reinforcement 335 and the second duct 225.

[0178] The insulation reinforcement 335 may be formed in a plate shape. The insulation reinforcement 335 includes a reinforcement cover 3351 made of a plastic material. The insulation reinforcement 335 further includes an insulating layer 3352 provided inside the reinforcement cover 3351.

[0179] The reinforcement cover 3351 may be molded using ABS (Acrylonitrile Butadiene Styrene) material. The ABS material is easy to process, has high impact resistance, and excellent heat resistance. The insulating layer 3352 may be molded from polyurethane foam inside the reinforcement cover 3351.

[0180] Optionally, the insulation reinforcement 335 may be disposed inside the defrost water tray 128. The defrost water tray 128 is disposed on one side of the evaporator 113, for example, on a lower side of the evaporator 113.

[0181] Optionally, the insulation reinforcement 335 may be disposed outside the defrost water tray 128. One side of the insulation reinforcement 335 and one side of the defrost water tray 128 may be arranged adjacent to each other. One side of the insulation reinforcement 335 and one side of the defrost water tray 128 may be connected and / or sealed by a sealer 3353.

[0182] Other components are identical or similar to those of the embodiments described above with reference to FIGS. 1 to 17, so redundant description will be omitted. [DETAILED DESCRIPTION OF MAIN ELEMENTS] 1:refrigerator2:main body3:door4:compressor5:condenser6:expander7:evaporator8:machine compartment9:cavity10:vacuum insulator10a:first vacuum insulator10b:second vacuum insulator11:first plate11a:first portion11b:second portion11c:extended portion11d:branched portion12:second plate12a:first portion12b:second portion12c:third portion12d:extended portion12e:branched portion13:third plate14:side plate14a:first portion14b:second portion14c:extended portion14d:branched portion15:vacuum space portion16:vacuum space extension portion16a:X-direction extension portion16b:Y-direction extension portion17:connecting frame18:sealing bar19:support20:bar21:connecting plate22:support plate23:radiation resistance sheet25:shield26:conduction resistance sheet28:additional insulator29a:central insulator29b:peripheral insulator30:joint31:port32:conduit33:film34:porous material100:main body101, 102:first panel103:second panel104:third panel105:block1051, 1052:first block portion1053:second block portion1054:recess portion1055:first pass-through part1056:second pass-through part1057:third block portion1058:first insulation reinforcing portion1059:second insulation reinforcing portion106:first storage compartment107:second storage compartment108:first storage compartment door109:second storage compartment door110:partition wall111:machine compartment111a, 111b:first cover1112:second cover1113:third cover112:first support frame113:evaporator114:harness115a, 115b, 115c:first plate116a, 116b, 116c:second plate118a. 117b:side plate118a. 118b:first joint1181:first surface1182:second surface1183:third surface119a., 119b:second joint1191:first surface1192:second surface1193a, 1193b, 1193c, 1193d:third surface120a, 120b:insulation block1201:drawer guide plate121:first duct122:first discharge hole123:communication port124:intake hole125:second duct126:second discharge hole127:defrost heater128:defrost water tray129:circulation fan1291:intake duct130:third duct1301:first surface1302:second surface1303a, 1303b, 1303c:third surface131:intake port132:discharge port133:tapered portion134:harness219a, 219b:second joint221:first duct222a:first intake hole222:second intake hole225:second duct230a, 230b:third duct231a:first intake port231b:second intake port233a:first discharge port232b:second discharge port233a:first tapered portion233b:second tapered portion335:insulation reinforcement3351:reinforcement cover3352:insulating layer3353:sealer

Examples

Embodiment Construction

[0041]Hereinafter, a common description which describes portions commonly defined across all embodiments of the present disclosure will be described.

[0042]Optionally, a heat insulator of the present disclosure may be provided as a single heat insulator. For example, the heat insulator may include: a first wall extending in one direction; and a second wall extending in a direction different from the one direction. Optionally, the heat insulator of the present disclosure may include a first heat insulator and a second heat insulator. The second heat insulator may be provided as a separate component distinct from the first heat insulator. The second heat insulator may be connected to the first heat insulator by a connector. In the present disclosure, the connector may be defined as a joint. The second heat insulator may include a portion extending in the same direction as the first heat insulator. The second heat insulator may include a portion extending in a direction different from t...

[Technical Field]

[0001] The present disclosure relates to a heat insulator and, more particularly, to a refrigerator having a heat insulator.[Background Art]

[0002] In a vacuum insulated refrigerator, an insulation joint is essential at edges where a plurality of panels including the main body are connected, in order to prevent heat leakage.

[0003] Korean Registered Patent No. 10-2529094 (published on May 8, 2023) discloses a refrigerator. According to the patent document, a cold air return duct is coupled to a mullion. The cold air return duct serves to draw in air from a refrigerating compartment and discharge it into the inside of an evaporator compartment.

[0004] The patent document relates to an invention of an integrated vacuum insulated refrigerator.

[0005] However, the cold air return duct according to the patent document has a structure that is difficult to apply to an assembly-type refrigerator in which a plurality of vacuum insulated panels are assembled.[Disclosure] [Technical Problem]

[0006] The present disclosure is directed to providing a refrigerator having a structure capable of solving the aforementioned problems.

[0007] A first objective is to provide a refrigerator having a structure for applying a third duct (return duct) and a second duct (evaporator compartment) that are suitable for a vacuum insulated refrigerator including a joint that prevents heat leakage at edges where vacuum insulated panels are connected.

[0008] A second objective is to provide a refrigerator having a structure capable of dispersing the degree of frost formation on an evaporator and uniformly circulating cold air.

[0009] A third objective is to provide a refrigerator having a structure that improves thermal insulation performance while maintaining smooth airflow in a storage compartment.[Technical Solution]

[0010] A heat insulator of the present disclosure may be provided as at least one heat insulator. For example, the heat insulator may include: a first wall extending in one direction; and a second wall extending in a direction different from the one direction. In another example, the heat insulator of the present disclosure may include a first heat insulator and a second heat insulator. The second heat insulator may be provided as a separate component distinct from the first heat insulator. The second heat insulator may be connected to the first heat insulator by a connector. In the present disclosure, the connector may be defined as a joint. The second heat insulator may include a portion extending in the same direction as the first heat insulator. The second heat insulator may include a portion extending in a direction different from the first heat insulator. The heat insulator may be provided in the form of a panel.

[0011] A refrigerator according to one embodiment of the present disclosure includes a main body forming the exterior of the refrigerator. The main body includes a plurality of panels including a heat insulator. The refrigerator further includes a plurality of joints disposed at edges where the plurality of panels is connected. The refrigerator includes a first storage compartment formed on one side of the main body. The refrigerator further includes a second storage compartment formed on the other side of the main body and / or partitioned off from the first storage compartment by a partition wall. The refrigerator may include a first duct. The refrigerator includes a first duct disposed on one side of the first storage compartment to supply cold air to the first storage compartment. The refrigerator includes a second duct. The second duct accommodates an evaporator. The second duct is disposed on one side of the second storage compartment to supply the cold air generated by the evaporator to the second storage compartment or deliver the cold air to the first duct. The refrigerator includes a third duct. The third duct is communicatively connected to the first duct and the second duct. The third duct may return the cold air from the first storage compartment to the second duct. The refrigerator includes a circulation fan. The circulation fan is disposed inside the second duct. The circulation fan may circulate the cold air along the second duct, the first duct, and / or the third duct. The third duct may be disposed on one side of the joint.

[0012] The panel includes a plurality of first panels forming at least two first surfaces of the refrigerator. The plurality of panels further includes a second panel. The second panel forms a second surface of the refrigerator different from the first surface. The second panel may connect one side of each of the plurality of first panels. The plurality of panels further includes a third panel. The third panel forms a third surface of the refrigerator different from the first and / or second surfaces. The third panel may be connected to one side of each of the plurality of first panels and the second panel. The refrigerator further includes a block. The block forms at least one fourth surface of the refrigerator different from the first to third surfaces. The block may be connected to the other side of each of the plurality of first panels and the second panel.

[0013] The joint includes a first joint disposed at an corner where one of the plurality of first panels and the second panel are connected. The joint includes a second joint disposed at an corner where another of the plurality of first panels and the second panel are connected. The third duct may be disposed on one side of at least one of the first joint and the second joint.

[0014] The heat insulator includes a first plate. The first plate is disposed toward the first space. The first plate extends in one direction. The heat insulator includes a second plate disposed facing a second space formed outside the main body. The heat insulator includes a side plate extending in a direction different from the one direction from one side of the first plate and connected to one side of the second plate. The heat insulator further includes a support disposed in a vacuum space portion formed between the first plate and the second plate.

[0015] The block includes a block cover made of a plastic material. The block includes an insulating material molded from polyurethane foam inside the block cover.

[0016] The joint includes a joint cover made of a plastic material. The joint includes an insulating material molded from polyurethane foam inside the joint cover.

[0017] The joint includes: a first surface covering a portion of any one of the plurality of first panels; a second surface covering a portion of the second panel; and a third surface connected to edges of the first surface and the second surface and formed to be inclined with respect to the first surface and the second surface.

[0018] Optionally, the third duct may be disposed on the third surface.

[0019] The third duct may include at least one of first to fifth surfaces. The first surface surrounds the first surface of the joint. The second surface surrounds the second surface of the joint. The third surface surrounds the third surface of the joint. The fourth surface extends from the first surface and faces the second storage compartment. The fifth surface extends from the second surface and faces the evaporator.

[0020] The third duct includes an intake port and / or a discharge port. The intake port may communicate with the first storage compartment and be configured to draw in cold air from the first storage compartment. The discharge port may communicate with the second duct and be configured to discharge the returning cold air toward the evaporator. The discharge port may be formed at a peripheral portion of the third duct positioned lower than a central portion of the evaporator.

[0021] Optionally, the third duct includes: an intake port communicating with the first storage compartment and configured to draw in cold air from the first storage compartment. The third duct includes a discharge port communicating with the second duct and configured to discharge the returning cold air toward the evaporator. The third duct is disposed between the joint and the evaporator. The discharge port is formed to penetrate one surface of the third duct toward the evaporator.

[0022] Optionally, the third duct includes an intake port communicating with the first storage compartment and configured to draw in cold air from the first storage compartment. The third duct includes a discharge port communicating with the second duct and configured to discharge the returning cold air toward the evaporator. The intake port is formed inclinedly at an corner where the first duct and the partition wall are connected.

[0023] Optionally, the third duct includes a discharge port configured to discharge the cold air toward the evaporator. The discharge port may be formed to open toward the evaporator. A tapered portion may be formed inclinedly on a portion of the third duct opposite to the discharge port.

[0024] Optionally, the third duct may be provided in plurality. The third duct may be disposed on at least one of one side of the first joint and one side of the second joint.

[0025] Optionally, the refrigerator may further include a pass-through part disposed between any one of the plurality of third ducts and any one of the first and second joints.

[0026] Optionally, the refrigerator may further include a harness coupled to one surface of the third duct and / or configured to wrap electric wires or signal lines.

[0027] Optionally, a discharge port may be formed on one side of the third duct, and / or a defrost heater disposed at the evaporator may extend adjacent to the discharge port.

[0028] Optionally, an insulation reinforcement may be disposed between the second panel and the evaporator.

[0029] Optionally, the insulation reinforcement may include: a reinforcement cover made of a plastic material; and an insulating material molded from polyurethane foam inside the reinforcement cover.

[0030] Optionally, the insulation reinforcement may be disposed inside or outside a defrost water tray provided on one side of the evaporator.[Advantageous Effects]

[0031] According to embodiments of the present disclosure, the following effects can be achieved.

[0032] First, it is possible to provide a cold air return flow path structure of a storage compartment, appropriate for a vacuum insulated refrigerator in which multiple panels including a heat insulator are joined.

[0033] A first duct may be disposed in a first storage compartment (refrigerating compartment). A second duct may be disposed in a second storage compartment (freezing compartment). The second duct accommodates an evaporator. A third duct may be communicatively connected to the first duct and the second duct, so that the cold air generated by the evaporator can be returned.

[0034] In the vacuum insulated refrigerator in which multiple panels are joined, a joint may be disposed at edges where the multiple panels are connected. The third duct is disposed on one side of the joint. Accordingly, the joint can prevent heat leakage to the edges where the multiple panels are connected.

[0035] Second, one surface of the joint is formed in an inclined shape. This optimizes the effect of preventing heat leakage. The third duct includes a surface formed to be connectable to the inclined surface of the joint. Thus, the third duct can secure a sufficient amount of returning cold air without reducing the inner capacity of the refrigerator.

[0036] Third, the third duct may be disposed on both sides of the storage compartment with the evaporator interposed therebetween. The third duct separates the returning cold air into two streams to both sides of the storage compartment, thereby distributing the returning cold air evenly over the evaporator. Through this, frost formed on the evaporator can be dispersed, improving defrosting efficiency. It is possible to maintain smoother circulation of cold air inside the refrigerator.

[0037] Fourth, a harness formed in a structure that encloses a bundle of multiple wires or signal lines may be coupled to one surface of the third duct facing the joint. Accordingly, by disposing the harness between the joint and the third duct, the storage compartment space can be utilized efficiently.

[0038] Fifth, an inclined tapered portion may be formed on a surface opposite to a discharge port of the third duct. Through this, it is possible to maintain smooth flow of cold air discharged from the third duct toward the evaporator while minimizing resistance.

[0039] Sixth, a defrost heater disposed on the evaporator may be extended to the discharge port of the third duct. This enables removal of freezing at the discharge port of the third duct.[Description of Drawings]

[0040] FIG. 1 is a perspective view showing the exterior of a refrigerator according to an embodiment of the present disclosure. FIG.2 is a conceptual view for explaining a vacuum insulator provided in the refrigerator of FIG.1. FIG. 3 is a conceptual view for explaining a third plate provided in the plate of FIG. 2. FIG. 4 is a conceptual view for explaining a heat transfer resistor provided in the plate of FIG. 3. FIG. 5 is a conceptual view showing ducts coupled to the inside of a refrigerator according to the present disclosure. FIG. 6 is a cross-sectional view taken along line VI-VI of FIG. 5, showing the first duct coupled to the first storage compartment. FIG. 7 is a cross-sectional view taken along line VII-VII of FIG. 5, showing the second duct coupled to the second storage compartment. FIG.8 is a conceptual view showing the third duct coupled to one side of the second duct in FIG.5. FIG. 9 is a conceptual view showing the cold air flow path structure and / or movement pathway in the storage compartment in FIG. 5. FIG. 10 is a conceptual view showing the first duct in FIG. 5. FIG. 10a shows the first duct as viewed from the front. FIG. 10b shows the first duct as viewed from the bottom. FIG. 11 is a conceptual view showing the second duct 125 in FIG. 5. FIG. 11a shows the second duct as viewed from the front. FIG. 11b shows the second duct as viewed from the bottom. FIG. 12 is a conceptual view showing the third duct in FIG. 8. FIG. 12a shows the third duct as viewed from the front. FIG. 12b shows the third duct as viewed from the side. FIG. 12c shows the third duct as viewed from above. FIG. 13 is a conceptual view showing a harness coupled to an inner side of a joint according to another embodiment of the present disclosure. FIG. 14 is a conceptual view showing third ducts arranged on both sides of the storage compartment according to yet another embodiment of the present disclosure. FIG. 15a is a conceptual view showing the arrangement of a first duct, a second duct, and / or a third duct in FIG. 14. FIG. 15b is a conceptual view transparently showing the arrangement of the first duct, second duct, and / or third duct in FIG. 15a. FIG. 16 is a front view showing the second duct and the third duct as viewed from the front in FIG. 15. FIG. 17 is a conceptual view showing a defrost heater disposed on one side of the evaporator in FIG. 16 and extended to a discharge port of the third duct. FIG. 18 is a conceptual view showing the arrangement of an insulation reinforcement disposed between the second panel and the evaporator in FIG. 5. FIG.19 is conceptual view for explaining a construction of the insulation reinforcement in FIG.18. FIG. 20 is a conceptual view showing the insulation reinforcement disposed inside the defrost water tray in FIG. 18. FIG. 21 is a conceptual view showing the insulation reinforcement disposed outside the defrost water tray in FIG. 18. [Mode for Invention]

[0041] Hereinafter, a common description which describes portions commonly defined across all embodiments of the present disclosure will be described.

[0042] Optionally, a heat insulator of the present disclosure may be provided as a single heat insulator. For example, the heat insulator may include: a first wall extending in one direction; and a second wall extending in a direction different from the one direction. Optionally, the heat insulator of the present disclosure may include a first heat insulator and a second heat insulator. The second heat insulator may be provided as a separate component distinct from the first heat insulator. The second heat insulator may be connected to the first heat insulator by a connector. In the present disclosure, the connector may be defined as a joint. The second heat insulator may include a portion extending in the same direction as the first heat insulator. The second heat insulator may include a portion extending in a direction different from the first heat insulator. The second heat insulator may include a portion connected to the first heat insulator, or may include a portion disposed to overlap the first heat insulator in at least one direction. The heat insulator may be a vacuum insulator including a vacuum space portion, or a non-vacuum insulator which does not include a vacuum space portion. The heat insulator may be a combination of the vacuum insulator and the non-vacuum insulator. The vacuum space portion provided in the second heat insulator may include a portion extending in the same direction as the vacuum space portion provided in the first heat insulator. The vacuum space portion provided in the second heat insulator may include a portion extending in a direction different from the vacuum space portion provided in the first heat insulator. The vacuum space portion provided in the second heat insulator may include a portion disposed to overlap the vacuum space portion provided in the first heat insulator in at least one direction. The heat insulator may be provided in the form of a panel. In the present disclosure, the following description will be given with respect to a "panel", for example, and an embodiment in which the term "panel" is replaced with the term "heat insulator" may also be included within the present disclosure. For example, in the present disclosure, the following description assumes that at least two panels of the main body form the exterior of the refrigerator, it may be understood or interpreted that at least two heat insulators of the main body form the exterior of the refrigerator.

[0043] Optionally, the refrigerator of the present disclosure may include a main body. The main body may include at least one storage compartment. The main body may further include a partition wall that separates a first storage compartment and a second storage compartment. A first storage compartment joint may include a first sub compartment joint, a second sub compartment joint, and / or a third sub compartment joint. The second storage compartment joint may be provided on one side of the second storage compartment. The second storage compartment joint may include a first joint, a second joint, and / or a third joint.

[0044] The partition wall may include the vacuum insulator and / or the non-vacuum insulator. The refrigerator of the present disclosure may include a door. The refrigerator of the present disclosure may include a machine compartment disposed on one side of the main body. In the machine compartment, one or more of the following may be arranged: a compressor, heat-dissipating components (e.g., a condenser, a heat-dissipating portion of a thermoelectric module, or a heat sink that exchanges heat with the heat-dissipating portion of the thermoelectric module), and a cooling fan. The machine compartment may include at least one of the following: a first cover (e.g., side cover) forming at least a portion of a first surface (e.g., side surface) for the machine compartment, a second cover (e.g., back cover) forming at least a portion of a second surface (e.g., rear surface), a third cover (e.g., upper cover) forming at least a portion of a third surface (e.g., top surface), a fourth cover (e.g., bottom cover) forming at least a portion of a fourth surface (e.g., bottom surface), and a fifth cover (e.g., front cover) forming at least a portion of a fifth surface (e.g., front surface). One or more of the first, second, third, fourth, and fifth covers may be provided as a single component or as multiple components. The machine compartment of the refrigerator of the present disclosure may include the heat insulator.

[0045] The panel may include one or more of a first plate, a second plate, and a side plate. A vacuum space portion may be provided between the first plate and the second plate. The refrigerator of the present disclosure may include at least one panel. The present disclosure may include: a first panel forming at least a portion of a first surface (e.g., side surface) of the refrigerator; a second panel forming at least a portion of a second surface (e.g., rear surface) of the refrigerator; a third panel forming at least a portion of a third surface (e.g., top surface) of the refrigerator; a fourth panel forming at least a portion of a fourth surface (e.g., bottom surface) of the refrigerator; and a fifth panel forming at least a portion of a fifth surface (e.g., front surface) of the refrigerator. One or more of the first, second, third, fourth, and fifth surfaces of the refrigerator may provide at least a portion of a wall forming the main body or at least a portion of a wall forming the door. One or more of the first, second, third, fourth, and fifth panels may be provided as a single component or as multiple components. The joint may be provided to connect edges of the refrigerator or to connect a first wall and a second wall which form the refrigerator's wall. The joint may be provided to connect the panel to another component (e.g., another panel). The joint may be provided to connect at least two or more of the first, second, third, fourth, and fifth panels. One or more of the first, second, third, fourth, and fifth panels may be provided in multiple parts, and the joint may be provided to connect the plurality of panels to each other. The joint may include a first surface, a second surface, and / or a third surface. The first surface of the joint may cover at least a portion of at least one of the first, second, third, fourth, and fifth panels. The second surface of the joint may cover at least a portion of at least another one of the first, second, third, fourth, and fifth panels. The third surface of the joint may be connected to the first surface of the joint and / or the second surface of the joint. The third surface of the joint may be connected to an corner of the first surface of the joint and / or an corner of the second surface of the joint. The third surface of the joint may be formed to be inclined with respect to at least one of the first surface of the joint and the second surface of the joint. At least some of the first, second, third, fourth, and fifth panels may be provided as a panel having a first thermal insulation performance per unit thickness, and at least some others of the first, second, third, fourth, and fifth panels may be provided as a panel having a second thermal insulation performance per unit thickness. The first thermal insulation performance and the second thermal insulation performance may be different from each other.

[0046] The heat insulator or refrigerator of the present disclosure may include a duct. The duct may include a first duct, a second duct, and / or a third duct. The first duct may supply cold air to the first storage compartment or the second storage compartment. The second duct may receive an evaporator. The third duct may be connected in communication with the first duct and the second duct. The third duct may include a first surface, a second surface, a third surface, a fourth surface, and / or a fifth surface. The first surface of the third duct may surround the first surface of the joint. The second surface of the third duct may surround the second surface of the joint. The third surface of the third duct may surround the third surface of the joint. The third duct may further include a fourth surface. The fourth surface of the third duct may be disposed to extend from the first surface of the third duct or face the second storage compartment. The fifth surface of the third duct may be disposed to extend from the second surface of the third duct or to face the evaporator.

[0047] The heat insulator or refrigerator of the present disclosure may include a block. The block may include a portion extending in the same direction as one or more of the first, second, third, fourth, and fifth panels. The block may include a portion extending in a different direction from one or more of the first, second, third, fourth, and fifth panels. The block may include a first surface (e.g., left surface), a second surface (e.g., right surface), a third surface (e.g., rear surface), a fourth surface (e.g., bottom surface), a fifth surface (e.g., top surface), and a sixth surface (e.g., front surface). Some of the first, second, third, fourth, and fifth surfaces of the refrigerator may be provided in the form of a panel, and some others of the first, second, third, fourth, and fifth surfaces of the refrigerator may be provided in the form of a block. The block may be provided as the non-vacuum insulator. For example, the block may be a block cover and / or polyurethane (PU) foam filling the inside of the block cover. The block may include one or more of a first block portion (e.g., side block portion), a second block portion (e.g., rear block portion or front block portion), and a third block portion (e.g., bottom block portion or top block portion). Each of the first, second, and third block portions may be provided in multiple parts. At least two or more of the first, second, and third block portions may be connected and provided as the joint. The third block portion may form one surface of the first storage compartment and / or may form one surface of the machine compartment. The third block portion may be provided as a partition wall, or may form one surface of the first storage compartment.

[0048] The heat insulator or refrigerator of the present disclosure may include an insulation reinforcing portion. The insulation reinforcing portion may include a portion connected to one side of the block or a portion formed to protrude from the block.

[0049] The heat insulator or refrigerator of the present disclosure may include a hinge. The hinge may be disposed on one side of the heat insulator. The hinge may be disposed on the main body and / or door of the refrigerator.

[0050] The hinge may include one or more of: a hinge fixing part that is coupled to at least one of the heat insulator, the main body of the refrigerator, and the door of the refrigerator; a hinge shaft; and a hinge connecting portion that protrudes and extends from the hinge fixing part. The hinge may include one or more of: a first hinge (e.g., upper hinge) disposed on one side of a wall forming the first storage compartment; a second hinge (e.g., middle hinge) disposed on the partition wall; and a third hinge (e.g., lower hinge) on a wall forming the second storage compartment. The heat insulator or refrigerator of the present disclosure may include one or more of: a hinge reinforcing frame for reinforcing the strength of the hinge; a cover to which the hinge is coupled; and a hinge reinforcing plate that is configured to be connected to or received in the panel. The hinge reinforcing frame may include one or more of first, second, third, and fourth frame portions. At least two of the first, second, third, and fourth frame portions may extend in different directions.

[0051] The heat insulator or refrigerator of the present disclosure may include a support frame. The support frame may support one surface of the panel. The support frame may include a coupling portion. The block may be supported on the machine compartment by the support frame. The support frame may include a first support frame and / or a second support frame.

[0052] The heat insulator or refrigerator of the present disclosure may include an inner cover. The inner cover may be disposed between the cover of the machine compartment and the hinge reinforcing frame (e.g., the first frame portion).

[0053] The heat insulator or refrigerator of the present disclosure may include a decoration. The decoration may be disposed on a surface of the heat insulator. The decoration may be disposed on a surface of the main body and / or door of the refrigerator. For example, the decoration may be disposed on an outer surface of the heat insulator or on an outer surface of the refrigerator.

[0054] The heat insulator or refrigerator of the present disclosure may include a hot line. The hot line may be disposed on a surface of the heat insulator. The decoration may be disposed on a surface of the main body and / or door of the refrigerator. The hot line may be disposed between the decoration and the surface of the heat insulator. The hot line may be disposed between the decoration and the surface of the refrigerator and / or between the decoration and the surface of the door.

[0055] The heat insulator or refrigerator of the present disclosure may include a casing. The casing may be an exterior casing or an interior casing. The exterior casing may be connected to the second plate. The exterior casing may be provided to cover at least a portion of the second plate. The exterior casing may be provided in contact with the second plate or spaced apart from the second plate by a predetermined distance. The interior casing may be connected to the first plate. The interior casing may be provided to cover at least a portion of the first plate. The interior casing may be provided in contact with the first plate or spaced apart from the first plate by a predetermined distance.

[0056] The heat insulator or refrigerator of the present disclosure may include a drawer and / or a drawer guide. The drawer guide may be provided with a first storage compartment drawer guide provided in the first storage compartment. The first storage compartment drawer guide may include at least one of a first plate (e.g., side plate), a second plate (e.g., bottom plate), a third plate (e.g., top plate), and a fourth plate (e.g., middle plate).

[0057] The drawer guide may include a second storage compartment drawer guide provided in the second storage compartment.

[0058] The heat insulator or refrigerator of the present disclosure may include a shelf and / or a shelf support frame.

[0059] [Detailed Description for Implementing the Invention] is divided into the foregoing [Common Description] and the following [Description Based on Drawings]. In the [Detailed Description for Implementing the Invention], each specific matter described for implementing the invention may be understood as an embodiment of the present disclosure. In the [Detailed Description for Implementing the Invention], a combination of at least two or more of the specific matters described for implementing the invention may also be understood as an embodiment of the present disclosure. For example, in the [Detailed Description for Implementing the Invention], each paragraph of the [Common Description] section or the section described based on the drawings, as well as a combination of such paragraphs, may be understood as an embodiment of the present disclosure. In another example, in the [Detailed Description for Implementing the Invention], each sentence of the [Common Description] section or the section described based on the drawings, as well as a combination of such sentences, may be understood as an embodiment of the present disclosure.

[0060] Hereinafter, based on each drawing, the [Description Based on Drawings] section describing the present disclosure will be set forth.

[0061] Referring to FIGS. 1 to 4, the heat insulator 10 of the present disclosure may include plates 11, 12, and 14. In the present disclosure, the term "plate" may refer to at least one of the first plate 11, the second plate 12, and the side plate 14. Optionally, the heat insulator of the present disclosure may include a vacuum space portion 15. The vacuum space portion 15 may be formed by walls provided by the plates 11, 12, and 14. The vacuum space portion 15 may have a thickness in a first direction. The plates 11, 12, and 14 may include: the first plate 11; and the second plate 12. The first plate 11 may include a portion extending in a direction different from the first direction. The second plate 12 may include a portion extending in another direction different from the first direction. Optionally, the plates may include a side plate 14 including a portion extending in the first direction. For example, the heat insulator 10 of the present disclosure may be provided such that the first plate 11, the second plate 12, and the side plate 14 may be each provided as separate components, and the separate components may be provided to be connected to one another. In another example, the heat insulator 10 of the present disclosure may be provided such that at least two of the first plate 11, the second plate 12, and the side plate 14 are integrally provided, and such that the separate components are connected to one another. In yet another example, the heat insulator 10 of the present disclosure may be provided such that portions connecting the first plate 11, the second plate 12, and the side plate 14 are each integrally provided. In this case, the first plate 11 may be provided as a separate component, and the separate components may be provided to be connected to one another. Alternatively, the second plate 12 may be provided as a separate component, and the separate components may be provided to be connected to one another. Alternatively, the side plate 14 may be provided as a separate component, and the separate components may be provided to be connected to one another. Optionally, the heat insulator 10 of the present disclosure may include a third plate disposed on at least a portion of the heat insulator 10 or connected to at least a portion of the plates 11, 12, 14. The third plate may include a portion provided to be thinner than or equal in thickness to the plates 11, 12, and 14. The third plate may include a portion provided to be thicker than the plates 11, 12, and 14. The third plate may be disposed in the vacuum space portion 15 or disposed outside the vacuum space portion 15. Examples of the third plate may include a heat transfer resistor 23, 26a, 26b, and 34, a deformation resistor 13, and the like, as described in the present disclosure.

[0062] Optionally, the heat insulator 10 of the present disclosure may include a heat transfer resistor 23, 26a, 26b, and 34 (thermal insulator) for reducing the amount of heat transfer between a first space provided adjacent to the first plate 11 and a second space provided adjacent to the second plate 12, or for reducing the amount of heat transfer between the first plate 11 and the second plate 12. A heat transfer resistor that reduces the amount of heat transfer by conduction may be defined as a conduction resistance sheet 26a and 26b, and a heat transfer resistor that reduces the amount of heat transfer by radiation may be defined as a radiation resistance sheet 23. The heat transfer resistor 23, 26a, 26b, and 34 may be provided as a porous material 34 or as a filler 34. A filler whose inside is filled with a porous material may be defined as the porous material 34. The heat transfer resistor 23, 26a, 26b, and 34 may include at least one of the radiation resistance sheet 23, the porous material 34, the filler 34, and the conduction resistance sheet 26a and 26b, or a mixture of at least two thereof. The heat transfer resistor 23, 26a, 26b, and 34 may be provided so as not to be connected to at least a portion of the plates 11, 12, and 14 or make contact with the plates 11, 12, and 14. A shield 24 may be provided for insulation outside the heat transfer resistor 23, 26a, 26b, and 34. A connecting frame 17 may be provided outside the heat transfer resistor 23, 26a, 26b, and 34. The heat insulator 10 may include a conduit penetrating the vacuum space portion 15. The conduit may be formed by providing a pipe wall 32 as a separate component, or may be provided in such a manner that the pipe wall 32 is omitted and only a through-hole is formed in the plate. The side plate 14 may be provided adjacent to the conduit, or the heat transfer resistor 23, 26a, 26b, and 34 may be provided adjacent to the conduit.

[0063] Optionally, the heat insulator 10 of the present disclosure may include a deformation resistor 13 connected to at least a portion of the plates 11, 12, and 14 to increase the internal deformation resistance of the plates 11, 12, and 14. When the deformation resistor is provided in the form of a plate, the deformation resistor may be referred to as a deformation resistant plate.

[0064] Optionally, the heat insulator 10 of the present disclosure may include a support 19 that is connected to at least a portion of the plates 11, 12, and 13 and holds the vacuum space portion 15. The support 19 may include a bar 20 having a portion extending in the first direction, which is the thickness direction of the vacuum space portion 15. The support 19 may include a support plate 22 having a portion extending in a direction different from the first direction. The support 19 may include a plurality of bars 20 and a connecting plate 21 connecting the plurality of bars 20. The support 19 may include at least one of the bars 20, the connecting plate 21, and the support plate 22 or a combination of at least two thereof.

[0065] Optionally, the heat insulator 10 of the present disclosure may include a component coupling portion that provides a portion on which the components 24, 28, and 32 are disposed or supported. For example, when the component coupling portion is provided in the form of a plate, the component coupling portion may be referred to as a component coupling plate. A component connected to the component coupling portion may include a pass-through component configured to penetrate at least a portion of the heat insulator 10 or at least a portion of the plates 11, 12, and 14. A component connected to the component coupling portion may include a surface component configured to be connected to a surface of the heat insulator 10 or to be connected to a surface of the plates 11, 12, and 14. The pass-through component may be a component that forms a path through which a fluid (e.g., electricity, refrigerant, water, and air) passes. The pass-through component may be provided in the form of a tube. The tube may include a straight tube and / or a curved tube. The tube may be provided in multiple parts, or may extend in one direction. The pass-through component may include at least one of the tube, a first lead-out portion, and a second lead-out portion. In the present disclosure, the term "fluid" is defined as any kind of object that flows. The fluid may include a moving solid, liquid, gas, and electricity. The pass-through component may be a component that forms a path through which a refrigerant for heat exchange passes, such as a suction line heat exchanger (SLHX) or a refrigerant pipe. The SLHX may be understood as a suction line heat exchanger that performs heat exchange between a refrigerant that has passed through the evaporator and a refrigerant before being introduced into the evaporator. The pass-through component may be a wire that supplies electricity to the apparatus. The pass-through component may be a component that forms a path through which air can pass, such as a duct or port along whose surface fluid flows. The port may include an exhaust port that provides a path for air to escape from a space formed between the first plate 11 and the second plate 12, in order to form the vacuum space portion 15. The pass-through component may be a path through which a fluid such as cooling water, hot water, ice, and defrost water can pass. Examples of the surface component may include peripheral insulation, a side panel, injected foam, pre-prepared resin, a hinge, a latch, a basket, a drawer, a shelf, a light, a sensor, an evaporator 7, a front decoration, a hotline, a heater, an outer cover, and an inner cover.

[0066] Through FIGS. 1 to 4, the terms plate, first plate, second plate, side plate, third plate, vacuum space portion, heat transfer resistor, conduction resistance sheet, radiation resistance sheet, porous material, filler, component coupling portion, joint, support, bar, support plate, connecting plate, deformation resistor, deformation resistance plate, component coupling portion, component coupling plate, pass-through component, surface component, duct, and port have been defined. In the present disclosure, when the above terms are used for portions other than the portions with respect to which the explanations of FIGS. 1 to 4 are described, the terms used shall be interpreted as defined in FIGS. 1 to 4.

[0067] In the present disclosure, the expression "object A is connected to object B" may be defined as object A being directly connected to at least a portion of object B, or at least a portion of object A being connected to at least a portion of object B through an intermedium disposed between objects A and B. In a modification, the expression "object A is connected to object B" may include object A and object B being integrally prepared in such a manner as to be connected by the aforementioned method. In the present disclosure, examples of connection may include supporting, combining, and sealing, as described below. In the present disclosure, the expression "object A is supported by object B" may be defined as object A being restricted in movement in one or more of the +X, -X, +Y, -Y, +Z, and -Z axis directions by object B. In the present disclosure, examples of supporting may include combining and sealing, as described below. In the present disclosure, the expression "object A is combined with object B" may be defined as object A being restricted in movement in one or more of the X, Y, and Z axis directions by object B. In the present disclosure, an example of combining may include sealing, as described below. In the present disclosure, the expression "object A is sealed to object B" may be defined as a state in which movement of fluid is not permitted at a portion where object A and object B are connected. In the present disclosure, at least a portion of one or more objects, i.e., object A and object B, may be defined as including: a portion of object A, the entirety of object A, a portion of object B, the entirety of object B, a portion of object A and a portion of object B, a portion of object A and the entirety of object B, the entirety of object A and a portion of object B, and the entirety of object A and the entirety of object B. In the present disclosure, the expression "plate A may be a wall defining space A" may be defined as at least a portion of plate A being a wall forming at least a portion of space A. That is, at least a portion of plate A may be a wall forming space A, or plate A may be a wall forming at least a portion of space A. In the present disclosure, a central portion of an object may be defined as a portion located in the center when the object is divided into three equal parts along the lengthwise direction of the object. A peripheral portion of the object may be defined as a portion located on one side or the other side of the central portion among the three equal parts. The peripheral portion of the object may include a surface adjoining the central portion and a surface opposite thereto. The surface opposite thereto may be defined as a border or corner of the object. In the present disclosure, the degree of deformation resistance indicates the extent to which the object resists deformation, which may be defined as a value determined by a shape including the thickness of the object, the material of the object, and the processing method of the object. In the present disclosure, the degree of heat transfer resistance indicates the extent to which the object resists heat transfer, which may be defined as a value determined by a shape including the thickness of the object, the material of the object, and the processing method of the object. In the present disclosure, the degree of heat transfer resistance may be defined as at least one of the degree of conduction resistance, the degree of radiation resistance, and the degree of convection resistance or a combination of at least two thereof. In the following description, the terms "upper side," "lower side," "right side," "left side," "front side," and "rear side" shall be understood with reference to the coordinate system illustrated in FIGS. 1 and 5. An example of "+Z" may mean "upper side," an example of "-Z" may mean "lower side," an example of "+Y" may mean "right side," an example of "-Y" may mean "left side," an example of "+X" may mean "front side," and an example of "-X" may mean "rear side." In this specification, the front-rear direction as used herein may be an example of the X-axis direction, the left-right direction may be an example of the Y-axis direction, and the up-down direction may be an example of the Z-axis direction.

[0068] The heat insulator 10 of the present disclosure may be applied to a refrigerator 1. The refrigerator 1 may include a main body 2 provided with a cavity 9 for storing storage items, and a door 3 provided to open and close the main body 2. A cold source for supplying cold air to the cavity 9 may be provided. For example, the cold source may be an evaporator 7 that evaporates refrigerant to take heat. The refrigerator may include a compressor 4 that compresses the refrigerant. The refrigerator may include a condenser 5 that condenses the compressed refrigerant. The condenser 5 may be connected to an expander 6 that expands the condensed refrigerant.

[0069] FIG. 5 is a conceptual view showing ducts coupled to the inside of a refrigerator according to the present disclosure.

[0070] FIG. 6 is a cross-sectional view taken along line VI-VI of FIG. 5, showing the first duct 121 coupled to the first storage compartment 106.

[0071] FIG. 7 is a cross-sectional view taken along line VII-VII of FIG. 5, showing the second duct 125 coupled to the second storage compartment 107.

[0072] FIG. 8 is a conceptual view showing the third duct 130 coupled to one side of the second duct 125 in FIG. 5.

[0073] FIG. 9 is a conceptual view showing the cold air flow path structure and / or movement pathway in the storage compartment in FIG. 5.

[0074] FIG. 10 is a conceptual view showing the first duct 121 in FIG. 5. FIG. 10a shows the first duct 121 as viewed from the front. FIG. 10b shows the first duct 121 as viewed from the bottom.

[0075] FIG. 11 is a conceptual view showing the second duct 125 in FIG. 5. FIG. 11a shows the second duct 125 as viewed from the front. FIG. 11b shows the second duct 125 as viewed from the bottom.

[0076] FIG. 12 is a conceptual view showing the third duct 130 in FIG. 8. FIG. 12a shows the third duct 130 as viewed from the front. FIG. 12b shows the third duct 130 as viewed from the side. FIG. 12c shows the third duct 130 as viewed from above.

[0077] The refrigerator according to the present disclosure includes a main body 100 and / or a door. The main body 100 forms the exterior of the refrigerator. The main body 100 may include a plurality of panels.

[0078] For example, at least two panels including the main body 100 include one 101 of first panels 101 and 102, the other 101 of the first panels 101 and 102, a second panel 103, a third panel 104, and / or a block 105. The second panel 103 forms one surface of the refrigerator. As one example of the one surface, it may form a rear surface of the refrigerator. The third panel 104 forms another surface of the refrigerator. As one example of the another surface, it may form an upper surface of the refrigerator. One 101 of the first panels 101 and 102 and the other 102 of the first panels 101 and 102 each form yet another surface of the refrigerator. As one example of the yet another surface, they may respectively form left and right sides of the refrigerator. One 101 of the first panels 101 and 102 and the other 102 of the first panels 101 and 102 are disposed to face each other in the Y-axis direction. The block 105 may form a further surface of the refrigerator. As an example of the further surface, the block 105 may form a bottom surface or one surface.

[0079] A machine compartment 111 may be installed on one side of the block 105. In this embodiment, the machine compartment 111 is illustrated as installed under the block 105.

[0080] Optionally, the main body 100 may include a fourth panel instead of the above-described block 105.

[0081] A vacuum insulator may form at least one of, or a portion of at least one of, one 101 of the first panels 101 and 102, the other 102 of the first panels 101 and 102, the second panel 103, the third panel 104, and / or the fourth panel. One 101 of at least first panels 101, the other 102 of the first panels 101 and 102, the second panel 103, the third panel 104, and / or the fourth panel may be formed in a polygonal or rectangular shape.

[0082] In this embodiment, one 101 of the first panels 101 and 102, the other 102 of the first panels 101 and 102, the second panel 103, and / or the third panel 104 may include a vacuum insulator. However, the block 105, which will be described later, is illustrated as including a non-vacuum insulator.

[0083] A storage compartment is formed inside the main body 100. The storage compartment is formed to be open toward one side (e.g., the front) of the main body 100. The storage compartment includes one or more of a first storage compartment 106 and a second storage compartment 107.

[0084] The first storage compartment 106 and the second storage compartment 107 may be disposed to be spaced apart in the Z-axis direction or Y-axis direction of the main body 100.

[0085] The door may be disposed to open and close the storage compartment. The door includes one or more of a first storage compartment door 108 and a second storage compartment door 109. The first storage compartment 106 and the second storage compartment 107 may be partitioned off by a partition wall 110. The partition wall 110 may horizontally extend in the X-axis direction and the Y-axis direction from one surface of one 101 of the first panels 101 and 102 to one surface of the other 102 of the first panels 101 and 102.

[0086] The partition wall 110 may be positioned between one-third and two-thirds of the height upward from the block 105, when the height (vertical distance) between the third panel 104 and the block 105 is divided into three equal parts. In this embodiment, the partition wall 110 is illustrated as disposed approximately one-third of the height upward from the block 105.

[0087] The partition wall 110 may be formed in a polygonal or rectangular shape. The partition wall 110 may have a thickness in the Z-axis direction. The partition wall 110 may extend longer in the X-axis direction and the Y-axis direction relative to the thickness.

[0088] An opening is formed on one surface of the main body 100. Storage items to be kept in the storage compartment, for example food, can enter and exit the storage compartment through the opening.

[0089] The machine compartment 111 includes one of at least two first covers 1111a and 1111b, the other of the first covers 1111a and 1111b, a second cover 1112, a third cover 1113, and / or a fourth cover. The second cover 1112 forms one surface of the machine compartment 111. As one example of the one surface, it may form arear surface of the machine compartment 111. The third cover 1113 forms another surface of the machine compartment 111. As one example of the another surface, it may form a front surface of the machine compartment 111. One of the first covers 1111a and 1111b and the other of the first covers 1111a and 1111b each forms yet another surface of the machine compartment 111. As one example of the yet another surface, they may respectively form left and right sides of the machine compartment 111. One of the first covers 1111a and 1111b and the other of the first covers 111a and 111b may be disposed to face each other in the Y-axis direction. In this embodiment, one of the first covers 1111a and 111b forms the left side of the machine compartment 111, and the other of the first covers 1111a and 111b forms the right side of the machine compartment 111. The fourth cover forms a further surface of the machine compartment 111. As one example of the further surface, the fourth cover may form a bottom surface or one surface. The further surface of the machine compartment 111 may be formed to be open. As one example of the further surface, it may be an upper surface of the machine compartment 111. A further surface of the machine compartment 111 may be configured to be covered by the block 105. The block 105 is configured to separate the storage compartment and machine compartment 111 of the main body 100.

[0090] The block 105 may be supported on the machine compartment 111 by a support frame. The support frame may be provided in plurality. The block 105 may be supported on the machine compartment 111 by a plurality of support frames. The support frame may extend in one direction. As one example of the one direction, it may mean the Y-axis direction. One side of the support frame may be coupled to one of the plurality of first covers 1111a and 1111b, and the other side of the support frame may be coupled to the other of the plurality of first covers 1111a and 1111b.

[0091] One surface of the block 105 may be coupled to one side of a first cover. The first covers 1111a and 1111b may be provided in plurality. One surface of the block 105 may be coupled to one side of the plurality of first covers 1111a and 1111b. As one example of the one surface of the block 105, it may mean a lower surface of the block 105. As one example of the one side of the first covers 1111a and 1111b, it may mean an upper side of the first covers 1111a and 1111b.

[0092] The support frame may include a first support frame 112 and / or a second support frame. The first support frame 112 is disposed to be spaced apart from the third cover 1113. The second support frame is disposed to be spaced apart from the first support frame 112 in the X-axis direction. The second support frame is disposed to be spaced apart from the second cover 1112.

[0093] An evaporator 113, among cycle components, is disposed on one side of the second storage compartment 107. As one example of the one side of the second storage compartment 107, it may be a rear side of the second storage compartment 107.

[0094] The block 105 may include a non-vacuum insulator. As one example of the non-vacuum insulator, the block 105 may be molded from a PU foaming liquid filling the inside of a cover of the block 105. The block 105 includes one of at least two first block portions 1051 and 1052, the other of the first block portions 1051 and 1052, a second block portion 1053, and / or a third block portion 1057.

[0095] The first block portions 1051 and 1052 are formed to extend in the first direction. The plurality of first block portions 1051 and 1052 are disposed to be spaced apart and / or face each other in the second direction. The second block portion 1053 is formed to extend in the second direction so as to connect one side of each of the plurality of first block portions 1051 and 1052.

[0096] The second block portion 1053 may be disposed to be connected to one surface of the second panel 103. As one example of the one surface of the second panel 103, it may mean a rear surface of the second storage compartment 107. The evaporator 113 may be disposed on one side of the second block portion 1053. As one example of the one side of the second block portion 1053, it may mean an upper side of the second block portion 1053.

[0097] The third block portion 1057 is formed to extend in the first direction and the second direction. The third block portion 1057 is configured to connect the first block portions 1051 and 1052 and the second block portion 1053. The plurality of first block portions 1051 and 1052 are disposed in the second direction on opposite sides of one surface of the third block portion 1057. As one example of the one surface of the third block portion 1057, it may form an upper surface of the block 105.

[0098] The third block portion 1057 is configured to partition the second storage compartment 107 and the machine compartment 111. One surface of the third block portion 1057 may form one surface of the second storage compartment 107. As one example of the one surface of the second storage compartment 107, it may form a lower surface of the second storage compartment 107. Another surface of the third block portion 1057 may form one surface of the machine compartment 111. As one example of the one surface of the machine compartment 111, it may form an upper surface of the machine compartment 111.

[0099] Another surface of the third block portion 1057 may form one surface of the machine compartment 111, and as one example of the one surface, it may form an upper surface.

[0100] The first block portion may be disposed at an corner where the first panel and the third block portion 1057 are connected. One of the plurality of first block portions 1051 and 1052 is disposed at an corner where one 101 of the plurality of first panels 101 and 102 and the third block portion 1057 are connected. The other of the plurality of first block portions 1051 and 1052 is disposed at an corner where the other 102 of the plurality of first panels 101 and 102 and the third block portion 1057 are connected.

[0101] The second block portion 1053 is disposed at an corner where the second panel 103 and the third block portion 1057 are connected.

[0102] The first block portions 1051 and 1052 and the second block portion 1053 may be disposed at edges where the first panels 101 and 102 and the second panel 103 are connected, thereby serving as a joint. The plurality of first block portions 1051 and 1052 and / or the second block portion 1053 may improve thermal insulation performance by preventing heat leakage.

[0103] A recess portion 1054 may be formed on one surface of the second block portion 1053. As one example of the one surface of the second block portion 1053, it may be an upper surface. The recess portion 1054 is formed to be recessed from one side to the other side in the Z-axis direction. The recess portion 1054 may be formed to be inclined from both sides of the second block portion 1053 toward the center of the second block portion 1053. A first pass-through part 1055 may be formed at the center of the recess portion 1054. The first pass-through part 1055 is configured to accommodate a portion of a drain pipe through which defrost water flows. The defrost water is generated by melting frost attached to the evaporator 113 by means of the defrost heater 127.

[0104] The pass-through part 1055 may be formed to penetrate the center of the second block portion 1053 in the Z-axis direction. One side of the third block portion 1057 may be disposed to overlap the second block portion 1053 in the Z-axis direction. The first pass-through part 1055 may be formed to penetrate the center of the second block portion 1053 and the third block portion 1057, which are arranged to overlap in the Z-axis direction. One side of the first pass-through part 1055 is communicatively connected to a drain pipe connected to a lower side of a portion accommodating the evaporator 113. The other side of the first pass-through part 1055 is communicatively connected to a drain of the machine compartment 111.

[0105] The second pass-through part 1056 may be formed to penetrate a peripheral portion of the second block portion 1053 in the Z-axis direction so that a pass-through component such as an electric wire or a signal line passes through the block 105. The second pass-through part 1056 may be formed to penetrate a peripheral portion of the second block portion 1053 and / or the third block portion 1057. One side of the second pass-through part 1056 is communicatively connected to the second storage compartment 107 (first space). The other side of the second pass-through part 1056 is communicatively connected to the machine compartment 111.

[0106] The block 105 may further include an insulation reinforcing portion. The insulation reinforcing portion may enhance the thermal insulation performance of the block 105 by utilizing a portion of the machine compartment 111 that does not affect the inner capacity of the refrigerator.

[0107] For example, the insulation reinforcing portion may include a first insulation reinforcing portion 1058. The first insulation reinforcing portion 1058 is formed to protrude toward the machine compartment 111 from one surface of the third block portion 1057. The first pass-through part 1055 may be formed to penetrate the center of the second block portion 1053, the third block portion 1057, and / or the insulation reinforcing portion in the Z-axis direction. The second pass-through part 1056 may be formed to penetrate a portion or the center of the second block portion 1053, the third block portion 1057, and / or the insulation reinforcing portion in the Z-axis direction.

[0108] Through this, the first insulation reinforcing portion 1058 may extend the length of a heat transfer pathway of the pass-through part, thereby reinforcing the weak insulation of the pass-through part.

[0109] The insulation reinforcing portion may further include a second insulation reinforcing portion 1059, which is formed to protrude toward the first panels 101 and 102 from one surface of the third block portion 1057. As one example of the one surface of the third block portion 1057, it may be a left surface or right surface of the third block portion 1057.

[0110] Through this, the second insulation reinforcing portion 1059 may enclose one surface of the first panels 101 and 102 as heat insulators, for example, a lower surface of the first panels 101 and 102, to prevent heat leakage through side portions of the heat insulators, thereby reinforcing the thermal insulation performance.

[0111] The insulation reinforcing portion may include a second insulation reinforcing portion 1059 that protrudes toward the second panel 103 from another surface of the third block portion 1057. As one example of the another surface of the third block portion 1057, it may be a rear surface of the third block portion 1057.

[0112] Through this, the third insulation reinforcing portion may enclose one surface of the second panel 103 as a heat insulator, for example, a lower surface of the second panel 103, to prevent heat leakage through a side portion of the heat insulator, thereby reinforcing the thermal insulation performance.

[0113] The machine compartment 111 is configured to accommodate part of a refrigeration cycle apparatus, for example, a compressor, a condenser, an expander, etc.

[0114] A heat insulator including each of the plurality of panels includes a first plate 115a, 115b, and 115c, a second plate 116a, 116b, and 116c, a side plate 117a and 117b, and a support. The first plate 115a, 115b, and 115c is disposed toward the storage compartment formed inside the main body 100. The second plate 116a, 116b, and 116c is disposed toward an outer side of the main body 100. The side plate 117a and 117b extends from the first plate 115a, 115b, and 115c and is connected to the second plate 116a, 116b, and 116c. The first plate 115a, 115b, and 115c, the second plate 116a, 116b, and 116c, and the side plate 117a and 117b are formed in the shape of a thin metal sheet. The side plate 117a and 117b and the second plate 116a, 116b, and 116c may be welded or sealed.

[0115] Heat leakage may occur at the edges of the refrigerator. To insulate such heat leakage, a joint may be coupled to the edges. At edges where a plurality of panels is connected, thin metal sheets may be arranged to overlap each other and / or the overlapping sheets may be sealed or welded together, which can result in heat leakage. To insulate such heat leakage, a joint is coupled to the edges where the plurality of panels is connected.

[0116] The joint includes a joint cover made of plastic material. The joint also includes an insulating layer. The insulating layer may be molded from polyurethane foam inside the joint cover. Through this, the joint can prevent heat leakage at the edges where the panels are connected.

[0117] The joint may include a first joint. The first joint may be disposed in the first storage compartment 106. The first joint 118a and 118b may be provided in plurality. The first joint may be disposed at the corner where a first panel and the second panel 103 are connected. The joint includes at least two first joints 118a and 118b disposed in the first storage compartment 106. One 118a of the first joints 118a and 118b is disposed at the corner where one 101 of the plurality of first panels 101 and 102 and the second panel 103 are connected. The other 118b of the first joints 118a and 118b is disposed at the corner where the other 102 of the plurality of first panels 101 and 102 and the second panel 103 are connected.

[0118] One 118a of the first joints 118a and 118b includes a first surface 1181 which abuts one 101 of the first panels 101 and 102. One 118a of the first joints 118a and 118b includes a second surface 1182 which abuts the second panel 103. One side of the first surface 1181 of one 118a of the first joints 118a and 118b and one side of the second surface 1182 thereof may meet perpendicularly, forming a right angle. One 118a of the first joints 118a and 118b includes a third surface 1183 connecting the other side of the first surface 1181 and the other side of the second surface 1182. The third surface 1183 of one 118a of the first joints 118a and 118b may be formed to be inclined with respect to the first surface 1181 or the second surface 1182. One 118a of the first joints 118a and 118b extends in the Z-axis direction.

[0119] Another 118b of the first joints 118a and 118b may be configured in the same manner as the one 118a of the first joints 118a and 118b, except for its position.

[0120] Yet another (not shown) of the first joints 118a and 118b may be disposed at the corner where the third panel 104 and the second panel 103 are connected. The yet another of the first joints 118a and 118b may extend in the Y-axis direction.

[0121] A first joint may be disposed at an corner where a first panel and the third panel 104 are connected. A further one (not shown) of the first joints 118a and 118b is disposed at the corner where one 101 of the plurality of first panels 101 and 102 and the third panel 104 are connected. The further one of the first joints 118a and 118b may extend in the X-axis direction. The further one (not shown) of the first joints 118a and 118b is disposed at the corner where the other 102 of the plurality of first panels 101 and 102 and the third panel 104 are connected.

[0122] A first duct 121 is disposed on one side of the first storage compartment 106, for example, on a rear side of the first storage compartment 106. The first duct 121 may be coupled to the second panel 103 so as to cover one side of the second panel 103. One side of the first duct 121 may be configured to cover one 118a of the first joints 118a and 118b. The other side of the first duct 121 may be configured to cover another 118b of the first joint 118a and 118b.

[0123] The first duct 121 may extend in the Z-axis direction and the Y-axis direction.

[0124] The first duct 121 forms a cold air passage to supply cold air to the first storage compartment 106.

[0125] A first discharge hole 122 may be formed in the first duct 121. The first discharge hole 122 may be provided in plurality. A plurality of first discharge holes 122 may be formed in the first duct 121. The plurality of first discharge holes 122 may be disposed to be spaced apart in the Z-axis direction and the Y-axis direction. Through this, the first duct 121 can supply cold air uniformly across the first storage compartment 106 through the plurality of first discharge holes 122.

[0126] A communication port 123 may be formed at the center of one side of the first duct 121 to communicate with a second duct 125 to be described later. One side of the first duct 121 may refer to a lower side of the first duct 121, for example. A through-hole is formed at the center of the partition wall 110. One side of the through-hole is communicatively connected to the communication port 123. The other side of the through-hole may be communicatively connected to the second duct 125 to be described later.

[0127] An intake hole 124 may be formed at a peripheral portion of one side of the first duct 121. The intake hole 124 is formed to penetrate so as to draw in cold air from the first storage compartment 106. The intake hole 124 may be connected to a third duct 130 to be described later, and the cold air may return to the evaporator 113 through the third duct 130.

[0128] The intake hole 124 may be formed at an corner where the first duct 121 and the partition wall 110 meet. The intake hole 124 may be formed to be inclined at a predetermined angle with respect to one surface of the first duct 121 and one surface of the partition wall 110. The intake hole 124 may extend in the direction in which it is inclined. The intake hole 124 may be provided in plurality. A plurality of intake holes 124 may be arranged to be spaced apart in the Y-axis direction.

[0129] The joint may include a second joint. The joint may be disposed in the second storage compartment 107. The second joints 119a and 119b may be provided in plurality. The second joint may be disposed at the corner where the first panel and the second panel 103 are connected. The joint includes at least two second joints 119a and 119b disposed in the second storage compartment 107. One 119a of the second joints 119a and 119b is disposed at the corner where one 101 of the plurality of first panels 101 and 102 and the second panel 103 are connected. Another 119a of the second joints 119a and 119b is disposed at the corner where another 102 of the plurality of first panels 101 and 102 and the second panel 103 are connected.

[0130] One 119a of the second joints 119a and 119b includes a first surface 1191 which abuts one 101 of the first panels 101 and 102. One 119a of the second joints 119a includes a second surface 1192 which abuts the second panel 103. One side of the first surface 1191 of one 119a of the first joints 119a and 119b and one side of the second surface 1192 thereof may meet perpendicularly, forming a right angle. One 119a of the first joints 119a and 119b includes at least three third surfaces 1193a, 1193b, 1193c, and 1193d which connecting the other side of the first surface 1191 and the other side of the second surface 1192. One of the third surfaces 1193a, 1193b, 1193c, and 1193d of one 119a of the second joints 119a and 119b may extend in the Y-axis direction from the first surface 1191. Another 1193a of the third surfaces 1193a, 1193b, 1193c, and 1193d of the one 119a of the second joints 119a and 119b may extend in the X-axis direction toward the second surface 1192. Yet another 1193b of the third surfaces 1193a, 1193b, 1193c, and 1193d of the one 119a of the second joints 119a and 119b may be formed to be inclined toward one side of the corner of the second surface 1192. A further one 1193c of the third surfaces 1193a, 1193b, 1193c, and 1193d of the one 119a of the second joints 119a and 119b may extend in the Y-axis direction from the another 1193b of the third surfaces 1193a, 1193b, 1193c, and 1193d toward the evaporator 113. A further one 1193d of the third surfaces 1193a, 1193b, 1193c, and 1193d of the one 119a of the second joints 119a and 119b may extend in the X-axis direction from one side of the further one 1193c of the third surfaces 1193a, 1193b, 1193c, and 1193d of the one 119a and be connected to one side of the corner of the second surface 1192.

[0131] One 119a of the second joints 119a and 119b extends in the Z-axis direction.

[0132] Another 119a of the second joints 119b and 119b may be configured in the same manner as the one of the second joints 119a and 110b, except for its position.

[0133] Insulation blocks 120a and 120b may be connected to one surface of the second joints 119a and 119b. The insulation blocks 120a and 120b are configured to expand the insulation area of the second joints 119a and 119b in the second storage compartment 107. The insulation blocks 120a and 120b may extend along one surface of the first panels 101 and 102 in the X-axis direction and the Z-axis direction. The insulation blocks 120a and 120b is configured to cover the first panels 101 and 102. The insulation blocks 120a and 120b may be molded from PU foam. The second joints 119a and 119b and the insulation blocks 120a and 120b may be integrally formed. Through this, the insulation blocks 120a and 120b can improve thermal insulation performance.

[0134] A drawer guide plate 1201 may be disposed on the insulation blocks 120a and 120b. The drawer guide plate 1201 may be injection-molded using a plastic material. A drawer guide protruding from the drawer guide plate 1201 is configured to guide the pulling out and / or pushing in of the drawer of the first storage compartment 106.

[0135] The second duct 125 is disposed on one side of the second storage compartment 107, for example, on a rear side of the second storage compartment 107. The second duct 125 may be coupled to the second panel 103 so as to cover the other side of the second panel 103. One side of the second duct 125 may be configured to cover one surface of one 119a of the second joints 119a and 119b, and the other side of the second duct 125 may be configured to cover one surface of the other 119b of the second joints 119a and 119b.

[0136] The second duct 125 may extend in the Z-axis direction and the Y-axis direction.

[0137] The second duct 125 forms a cold air passage to supply cold air to the second storage compartment 107.

[0138] A second discharge hole 126 may be formed in the second duct 125. The second discharge hole 126 may be provided in plurality. A plurality of second discharge holes 126 may be formed in the second duct 125. The plurality of second discharge holes 126 may be arranged to be spaced apart in the Z-axis direction and the Y-axis direction. Through this, the second duct 125 can supply cold air uniformly across the second storage compartment 107 through the plurality of second discharge holes 126.

[0139] An evaporator 113 is installed inside the second duct 125 so as to be accommodated therein. A defrost heater 127 is disposed on the evaporator 113. The defrost heater 127 may heat the evaporator 113 to prevent frost from forming on the evaporator 113. A defrost water tray 128 is disposed inside the second duct 125. The defrost water tray 128 is disposed on one side of the evaporator 113. Here, one side of the evaporator 113 may refer to a lower side of the evaporator 113, for example.

[0140] The defrost water tray 128 may temporarily store defrost water generated from the evaporator 113.

[0141] A circulation fan 129 may be installed on another side of the evaporator 113. The circulation fan 129 is configured to deliver cold air generated by the evaporator 113 to the first duct 121 through the through-hole and the communication port 123.

[0142] An intake duct 1291 is installed on one side of the second duct 125. The intake duct 1291 is communicatively connected to one side of the second storage compartment 107. Here, one side of the second storage compartment 107 may refer to a lower side of the second storage compartment 107, for example.

[0143] The other side of the intake duct 1291 is communicatively connected to the evaporator 113. The circulation fan 129 forms a circulation flow of cold air between the second storage compartment 107 and the first storage compartment 106.

[0144] A cold air movement pathway will be discussed as follows. Air moves from the second storage compartment 107 to the evaporator 113 through the intake duct 1291. The evaporator 113 generates cold air through heat exchange between the refrigerant and the air. The generated cold air moves to the first duct 121 through the through-hole of the partition wall 110 and the communication port 123. The cold air in the first duct 121 is discharged into the first storage compartment 106 through the discharge holes of the first duct 121.

[0145] The cold air in the first storage compartment 106, after cooling the food stored in the first storage compartment 106, may be drawn in through the intake hole 124 formed on one side of the first duct 121 and / or may return to the second duct 125 through a third duct 130 to be described later.

[0146] The third duct 130 is disposed on one side of the second storage compartment 107. The third duct 130 may be disposed between one side of the second duct 125 and one of the first panels 101 and 102. The third duct 130 is communicatively connected to the intake hole 124 of the first duct 121 and the second duct 125. Through this, the third duct 130 can deliver the air in the first storage compartment 106 to the evaporator 113 accommodated in the second duct 125.

[0147] The third duct 130 may be disposed on one side of at least one of the second joints 119a and 119b. In this embodiment, the third duct 130 is illustrated as disposed on one surface of one 119a of the second joints 119a and 119b.

[0148] The third duct 130 may include third surfaces 1303a, 1303b, and 1303c which abut the third surfaces 1193a, 1193b, 1193c, and 1193d of the second joints 119a and 119b. At least three third surfaces may be provided. The third duct 130 includes at least three third surfaces 1303a, 1303b, and 1303c which abut the third surfaces 1193a, 1193b, 1193c, and 1193d of the second joints 119a and 119b. One 1303a of the third surfaces 1303a, 1303b, and 1303c of the third duct 130 is disposed to face and / or be connected to one 1193a of the third surfaces 1193a, 1193b, 1193c, and 1193d of the second joints 119a and 119b. Another 1303b of the third surfaces 1303a, 1303b, and 1303c of the third duct 130 is disposed to face and / or be connected to another 1193b of the third surfaces 1193a, 1193b, 1193c, and 1193d of the second joints 119a and 119b. Yet another 1303c of the third surfaces 1303a, 1303b, and 1303c of the third duct 130 is disposed to face and / or be connected to yet another 1193c of the third surfaces 1193c, 1193b, 1193c, and 1193d of the second joints 119a and 119b.

[0149] One 1303b of the third surfaces 1303a, 1303b, and 1303c of the third duct 130 may include an inclined surface corresponding to the inclined surface 1193b among the third surfaces 1193a, 1193b, 1193c, and 1193d of the second joints 119a and 119b.

[0150] The third duct 130 includes a first surface 1301 facing the second storage compartment 107 and a second surface 1302 facing one side of the evaporator 113. The first surface 1301 of the third duct 130 may form the same plane as one surface of the second duct 125 or may extend parallel to one surface of the second duct 125. In this embodiment, one surface of the third duct 130 may form the same plane as one surface of the second duct 125.

[0151] The third duct 130 extends in the Z-axis direction along the third surfaces 1193a, 1193b, 1193c, and 1193d of the second joints 119a and 119b.

[0152] An intake port 131 is formed on one side of the third duct 130. The intake port 131 is formed inclinedly to correspond to the inclined intake hole 124 of the first duct 121.

[0153] The intake port 131 is communicatively connected to the intake hole 124. The intake port 131 of the third duct 130 may be accommodated inside a peripheral portion of the partition wall 110. A receiving hole for the intake port 131, which accommodates the intake port 131 inside the peripheral portion of the partition wall 110, may be formed to penetrate in the Z-axis direction.

[0154] A discharge port 132 is formed on the other side of the third duct 130. The discharge port 132 may be disposed at a peripheral portion of one side surface of the evaporator 113 positioned lower than an imaginary line horizontally passing through a center portion of the evaporator 113 in the Y-axis direction. The discharge port 132 is formed to penetrate the second surface 1302 of the third duct 130 in the Y-axis direction. The discharge port 132 is formed to open toward the evaporator 113.

[0155] A tapered portion 133 may be formed inclinedly on one surface of the third duct 130 facing the opposite direction of the discharge port 132. Through this, the tapered portion 133 can redirect the airflow along the third duct 130 toward the evaporator 113, thereby minimizing flow resistance.

[0156] FIG. 13 is a conceptual view showing a harness 114 coupled to an inner side of a joint according to another embodiment of the present disclosure.

[0157] In this embodiment, a third duct 130 may be coupled to one side of the second joint. In this embodiment, a harness 114 may be coupled to the other side of the second joint. This embodiment differs from the embodiments described in FIGS. 5 to 12 in that the third duct 130 is coupled to one side of one 119a of the second joints 119a and 119b, and / or the harness 114 is coupled to an inner side of the other 119b of the second joints 119a and 119b.

[0158] The harness 114 is configured to enclose a plurality of electric wires or signal lines. The harness 114 may supply power or transmit control signals to electrical components such as a motor, lamp, etc. embedded in the refrigerator.

[0159] A second pass-through part 1056 may be formed in the second joint so as to penetrate in the Z-axis direction. The second pass-through part 1056 may be formed in the other 119b of the second joints 119a and 119b so as to penetrate in the Z-axis direction. The harness 114 may penetrate the partition wall 110 and be drawn out into the first storage compartment 106. A lead-out hole for drawing out the harness 114 may be formed at a peripheral portion of the partition wall 110 so as to penetrate in the Z-axis direction.

[0160] The harness 114 may penetrate the block 105 or be drawn out into the machine compartment 111.

[0161] However, the positions of the third duct 130 and the harness 114 are not limited to this. For example, the harness 114 may be coupled to an inner side of one 119a of the second joints 119a and 119b, and / or the third duct 130 may be coupled to one side of the other 119b of the second joints 119a and 119b.

[0162] Other components are identical or similar to those of the embodiments described above with reference to FIGS. 1 to 12, so redundant description will be omitted.

[0163] FIG. 14 is a conceptual view showing a third duct 230a and 230b arranged on one side or both sides of the storage compartment according to yet another embodiment of the present disclosure.

[0164] FIG. 15a is a conceptual view showing the arrangement of a first duct 221, a second duct 225, and / or a third duct 230a and 230b in FIG. 14. FIG. 15b is a conceptual view transparently showing the arrangement of the first duct 221, second duct 225, and / or third duct 230a and 230b in FIG. 15a.

[0165] FIG. 16 is a front view showing the second duct 225 and the third duct 230a and 230b as viewed from the front in FIG. 15.

[0166] In this embodiment, the third duct 230a and 230b may be coupled to one side of the second joint. The third duct may be provided in plurality. This embodiment differs from the embodiments described in FIGS. 5 to 13 in that a plurality of third ducts 230a and 230b are respectively coupled to one side of one 219a of the second joints 219a and 219b and one side of the other 219b of the second joints 219a and 219b.

[0167] The harness 134 may be coupled to one side surface of the third duct. The harness may be disposed between one surface of the second joint and one surface of the third duct. The harness 134 may be coupled to one side surface of any one of the plurality of third ducts 230a and 230b. The harness 134 may be disposed between one surface of any one of the second joints 219a and 219b and one surface of one 230a of the third ducts 230a and 230b.

[0168] A first intake hole 222a is formed on one side of the first duct 221 so as to communicate with the first storage compartment 106. A first intake port 231a may be formed on one side of the third duct. The first intake port 231a may communicate with the first intake hole 222a. A first discharge port 232a may be formed on the other side of the third duct. The first discharge port 232a may be communicatively connected to one side of the second duct 225 toward the evaporator 113. A first tapered portion 233a may be formed inclinedly on the other side of the third duct. Through this, the discharge flow through the third duct can be smoothly maintained. The first intake port 231a is formed on one side of one 230a of the plurality of third ducts 230a and 230b. The first intake port 231a communicates with the first intake hole 222a. The first discharge port 232a is communicatively connected to the other side of one 230a of the third ducts 230a and 230b so as to communicate with one side of the second duct 225 toward the evaporator 113. The first tapered portion 233a is formed inclinedly on the other side of one 230a of the third ducts 230a and 230b. Through this, the discharge flow of one 230a of the third ducts 230a and 230b can be smoothly maintained.

[0169] A second intake hole 222b is formed on the other side of the first duct 221 so as to communicate with the first storage compartment 106.

[0170] A second intake port 231b may be formed on one side of the third duct. The second intake port 231b may communicate with the second intake hole 222b. A second discharge port 232b may be connected to the other side of the third duct so as to communicate with the second duct 225 toward the evaporator 113. A second tapered portion 233b may be formed inclinedly on the other side of the third duct. Through this, the discharge flow of the third duct can be smoothly maintained. The second intake port 231b is formed on one side of another 230b of the plurality of third ducts 230a and 230b. The second intake port 231b communicates with the second intake hole 222b. The second discharge port 232b is communicatively connected to the other side of another 230b of the third ducts 230a and 230b so as to communicate with the other side of the second duct 225 toward the evaporator 113. A second tapered portion 233b is formed inclinedly on the other side of another 230b of the third ducts 230a and 230b. Through this, the discharge flow of another 230b of the third ducts 230a and 230b can be smoothly maintained.

[0171] Other components are identical or similar to those of the embodiments described above with reference to FIGS. 1 to 13, so redundant description will be omitted.

[0172] FIG. 18 is a conceptual view showing the arrangement of an insulation reinforcement 335 disposed between the second panel 103 and the evaporator 113 in FIG. 5.

[0173] FIG. 19 is a conceptual view for explaining a construction of the insulation reinforcement 335 in FIG. 18. FIG. 19a shows a reinforcement cover 3351 as viewed from the front. FIG. 19b shows an insulating layer 3352 to fill the inside of the reinforcement cover 3351 as viewed from the front. FIG. 19c is a cross-sectional view taken along XIX-XIX in FIG. 19, showing how the reinforcement cover 3351 of FIG. 19a and the insulating layer 3352 of FIG. 19b are combined.

[0174] FIG. 20 is a conceptual view showing the insulation reinforcement 335 disposed inside the defrost water tray 128 in FIG. 18.

[0175] FIG. 21 is a conceptual view showing the insulation reinforcement 335 disposed outside the defrost water tray 128 in FIG. 18.

[0176] This embodiment differs from the embodiments described in FIGS. 1 to 17 in that the insulation reinforcement 335 is arranged between the second panel 103 and the evaporator 113.

[0177] The thermal reinforcement 335 is configured to cover one surface of the second storage compartment 107, for example, a rear surface of the second storage compartment 107. The second duct 125 is configured to cover the insulation reinforcement 335. The insulation reinforcement 335 may extend in the Y-axis direction and the Z-axis direction. A cold air passage is formed between the insulation reinforcement 335 and the second duct 225.

[0178] The insulation reinforcement 335 may be formed in a plate shape. The insulation reinforcement 335 includes a reinforcement cover 3351 made of a plastic material. The insulation reinforcement 335 further includes an insulating layer 3352 provided inside the reinforcement cover 3351.

[0179] The reinforcement cover 3351 may be molded using ABS (Acrylonitrile Butadiene Styrene) material. The ABS material is easy to process, has high impact resistance, and excellent heat resistance. The insulating layer 3352 may be molded from polyurethane foam inside the reinforcement cover 3351.

[0180] Optionally, the insulation reinforcement 335 may be disposed inside the defrost water tray 128. The defrost water tray 128 is disposed on one side of the evaporator 113, for example, on a lower side of the evaporator 113.

[0181] Optionally, the insulation reinforcement 335 may be disposed outside the defrost water tray 128. One side of the insulation reinforcement 335 and one side of the defrost water tray 128 may be arranged adjacent to each other. One side of the insulation reinforcement 335 and one side of the defrost water tray 128 may be connected and / or sealed by a sealer 3353.

[0182] Other components are identical or similar to those of the embodiments described above with reference to FIGS. 1 to 17, so redundant description will be omitted. [DETAILED DESCRIPTION OF MAIN ELEMENTS] 1:refrigerator2:main body3:door4:compressor5:condenser6:expander7:evaporator8:machine compartment9:cavity10:vacuum insulator10a:first vacuum insulator10b:second vacuum insulator11:first plate11a:first portion11b:second portion11c:extended portion11d:branched portion12:second plate12a:first portion12b:second portion12c:third portion12d:extended portion12e:branched portion13:third plate14:side plate14a:first portion14b:second portion14c:extended portion14d:branched portion15:vacuum space portion16:vacuum space extension portion16a:X-direction extension portion16b:Y-direction extension portion17:connecting frame18:sealing bar19:support20:bar21:connecting plate22:support plate23:radiation resistance sheet25:shield26:conduction resistance sheet28:additional insulator29a:central insulator29b:peripheral insulator30:joint31:port32:conduit33:film34:porous material100:main body101, 102:first panel103:second panel104:third panel105:block1051, 1052:first block portion1053:second block portion1054:recess portion1055:first pass-through part1056:second pass-through part1057:third block portion1058:first insulation reinforcing portion1059:second insulation reinforcing portion106:first storage compartment107:second storage compartment108:first storage compartment door109:second storage compartment door110:partition wall111:machine compartment111a, 111b:first cover1112:second cover1113:third cover112:first support frame113:evaporator114:harness115a, 115b, 115c:first plate116a, 116b, 116c:second plate118a. 117b:side plate118a. 118b:first joint1181:first surface1182:second surface1183:third surface119a., 119b:second joint1191:first surface1192:second surface1193a, 1193b, 1193c, 1193d:third surface120a, 120b:insulation block1201:drawer guide plate121:first duct122:first discharge hole123:communication port124:intake hole125:second duct126:second discharge hole127:defrost heater128:defrost water tray129:circulation fan1291:intake duct130:third duct1301:first surface1302:second surface1303a, 1303b, 1303c:third surface131:intake port132:discharge port133:tapered portion134:harness219a, 219b:second joint221:first duct222a:first intake hole222:second intake hole225:second duct230a, 230b:third duct231a:first intake port231b:second intake port233a:first discharge port232b:second discharge port233a:first tapered portion233b:second tapered portion335:insulation reinforcement3351:reinforcement cover3352:insulating layer3353:sealer

Examples

Embodiment Construction

[0041]Hereinafter, a common description which describes portions commonly defined across all embodiments of the present disclosure will be described.

[0042]Optionally, a heat insulator of the present disclosure may be provided as a single heat insulator. For example, the heat insulator may include: a first wall extending in one direction; and a second wall extending in a direction different from the one direction. Optionally, the heat insulator of the present disclosure may include a first heat insulator and a second heat insulator. The second heat insulator may be provided as a separate component distinct from the first heat insulator. The second heat insulator may be connected to the first heat insulator by a connector. In the present disclosure, the connector may be defined as a joint. The second heat insulator may include a portion extending in the same direction as the first heat insulator. The second heat insulator may include a portion extending in a direction different from t...

Claims

1. A refrigerator comprising: a main body including a panel including a heat insulator; a joint disposed at an corner where the panel is connected; and a first storage compartment formed on one side of the main body.

2. The refrigerator of claim 20, wherein the panel includes: a plurality of first panels forming a first surface of the refrigerator; a second panel forming a second surface different from the first surface of the refrigerator and connecting one side of each of the plurality of first panels; a third panel forming a third surface different from the first and second surfaces of the refrigerator and connected to one side of each of the plurality of first panels and the second panel; and a block forming a fourth surface different from the first to third surfaces of the refrigerator and connected to the other side of each of the plurality of first panels and the second panel.

3. The refrigerator of claim 20, wherein the joint includes: a first joint disposed at an corner where one of the plurality of first panels and the second panel are connected; and a second joint disposed at an corner where another of the plurality of first panels and the second panel are connected, wherein the third duct is disposed on one side of at least one of the first joint and the second joint.

4. The refrigerator of claim 20, wherein the heat insulator includes: a first plate disposed toward a first space formed inside the main body and extending in one direction; a second plate disposed toward a second space formed outside the main body; a side plate extending in a direction different from the one direction from one side of the first plate and connected to one side of the second plate; and a support disposed in a vacuum space portion formed between the first plate and the second plate.

5. The refrigerator of claim 2, wherein the block includes: a block cover made of a plastic material; and an insulating material molded from polyurethane foam inside the block cover.

6. The refrigerator of claim 20, wherein the joint includes: a joint cover made of a plastic material; and an insulating material molded from polyurethane foam inside the joint cover.

7. The refrigerator of claim 2, wherein the joint includes: a first surface covering a portion of any one of the plurality of first panels; a second surface covering a portion of the second panel; and a third surface connected to edges of the first surface and the second surface and formed to be inclined with respect to the first surface and the second surface.

8. The refrigerator of claim 7, wherein the third duct is disposed on the third surface of the joint.

9. The refrigerator of claim 7, wherein the third duct includes: a first surface surrounding the first surface of the joint; a second surface surrounding the second surface of the joint; a third surface surrounding the third surface of the joint; a fourth surface extending from the first surface and facing the second storage compartment; and a fifth surface extending from the second surface and facing the evaporator.

10. The refrigerator of claim 20, wherein the third duct includes: an intake port communicating with the first storage compartment and configured to draw in cold air from the first storage compartment; and a discharge port communicating with the second duct and configured to discharge the returning cold air toward the evaporator, wherein the discharge port is formed at a peripheral portion of the third duct positioned lower than a central portion of the evaporator.

11. The refrigerator of claim 20, wherein the third duct includes: an intake port communicating with the first storage compartment and configured to draw in cold air from the first storage compartment; and a discharge port communicating with the second duct and configured to discharge the returning cold air toward the evaporator, wherein the third duct is disposed between the joint and the evaporator, and the discharge port is formed to penetrate one surface of the third duct toward the evaporator.

12. The refrigerator of claim 20, wherein the third duct includes: an intake port communicating with the first storage compartment and configured to draw in cold air from the first storage compartment; and a discharge port communicating with the second duct and configured to discharge the returning cold air toward the evaporator, wherein the intake port is formed inclinedly at an corner where the first duct and the partition wall are connected.

13. The refrigerator of claim 20, wherein the third duct includes a discharge port configured to discharge the cold air toward the evaporator, wherein the discharge port is formed to open toward the evaporator, and a tapered portion is formed inclinedly on a portion of the third duct opposite to the discharge port.

14. The refrigerator of claim 20, wherein the third duct is provided in plurality, the joint includes a first joint and a second joint, and the plurality of third ducts is respectively disposed at one side of the first joint and one side of the second joint.

15. The refrigerator of claim 20, wherein the third duct is provided in plurality, the joint includes a first joint and a second joint, and further comprising a pass-through part disposed between any one of the plurality of third ducts and any one of the first and second joints.

16. The refrigerator of claim 20, further comprising a harness mounted on one surface of the third duct and configured to enclose electric wires or signal lines.

17. The refrigerator of claim 20, wherein a discharge port is formed on one side of the third duct, and a defrost heater disposed at the evaporator extends adjacent to the discharge port.

18. The refrigerator of claim 20, wherein the panel further includes a second panel, and an insulation reinforcement is disposed between the second panel and the evaporator.

19. The refrigerator of claim 18, wherein the insulation reinforcement includes: a reinforcement cover made of a plastic material; and an insulating material molded from polyurethane foam inside the reinforcement cover.

20. The refrigerator of claim 1, wherein the panel includes a plurality of panels, the joint includes a plurality of joints, the plurality of first panels forms at least two first surfaces of the refrigerator, and further comprising: a second storage compartment formed on the other side of the main body and partitioned off from the first storage compartment by a partition wall; a first duct disposed on one side of the first storage compartment to supply cold air to the first storage compartment; a second duct disposed on one side of the second storage compartment to accommodate an evaporator and to supply the cold air generated by the evaporator to the second storage compartment or deliver the cold air to the first duct; a third duct communicatively connected to the first duct and the second duct and configured to return the cold air from the first storage compartment to the second duct; and a circulation fan disposed inside the second duct to circulate the cold air along the second duct, the first duct, and the third duct, wherein the third duct is disposed on one side of the joint.

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