Vacuum adiabatic body

Abstract

The vacuum insulation body of the present invention may include a first plate; a second plate; and a sealing portion that seals the first plate and the second plate to provide a vacuum space. Optionally, it may include a supporter that maintains the vacuum space. Optionally, it may include a heat transfer resistor to reduce the amount of heat transfer between the first plate and the second plate. Optionally, it may include a component fastening portion connected to at least one of the first and second plates to join components. Optionally, the second plate may include a first outer case adjacent to the vacuum space. Optionally, it may include a second outer case further from the vacuum space than the first outer case. Optionally, the outer surface of the vacuum insulation body may be provided flat.

Description

Technology Field

[0001] The present invention relates to a vacuum insulation body. Background Technology

[0002] Insulation performance can be improved by constructing an insulating wall with a vacuum. A device in which at least a portion of the internal space is made of a vacuum to obtain an insulating effect can be called a vacuum insulator.

[0003] The applicant has developed technology to obtain a vacuum insulation material that can be used in various devices and home appliances, and has disclosed a vacuum insulation material according to Korean application numbers 10-2015-0109724 and 10-2015-0109722.

[0004] In the cited literature, a plurality of members are fastened together to provide a vacuum space. Specifically, a first plate, a conductive resistance sheet, a side plate, and a second plate are sealed together. A sealing process is performed to seal the fastening portions of each of the members. A small process error occurring during the sealing process leads to vacuum breakdown.

[0005] The aforementioned cited literature does not disclose a specific method for insulating the periphery of a vacuum insulation body. In particular, it does not describe a method for manufacturing a vacuum insulation body. Prior art literature

[0006] Republic of Korea Application No. 10-2015-0109724, Vacuum Insulator Republic of Korea Application No. 10-2015-0109722, Vacuum Insulator The problem to be solved

[0007] The present invention aims to resolve the aforementioned problems by proposing a vacuum insulation material that can resolve the problem of poor sealing by reducing the number of sealing points in the wall providing the vacuum space.

[0008] The present invention proposes a high-productivity vacuum insulation body. means of solving the problem

[0009] The vacuum insulation of the present invention may include a first plate; a second plate; and a sealing portion that seals the first plate and the second plate to provide a vacuum space. Optionally, it may include a supporter that maintains the vacuum space. Optionally, it may include a heat transfer resistor to reduce the amount of heat transferred between the first plate and the second plate. Optionally, it may include a component fastening portion connected to at least one of the first and second plates to join components. Accordingly, a vacuum insulation capable of achieving industrial purposes can be provided.

[0010] Optionally, the second plate may include a first outer case adjacent to the vacuum space. Optionally, it may include a second outer case further from the vacuum space than the first outer case. Optionally, the outer surface of the vacuum insulation may be provided flat.

[0011] Optionally, a cushioning pad may be placed at the branching portion of the first outer case and the second outer case to guide the relative seating position. The flowability of the foaming liquid can be improved through the effect of the above configuration.

[0012] Optionally, the cushioning pad may include an elastic material to absorb the pressure difference of the foaming liquid.

[0013] Optionally, a position marker may be included on the surface of the first outer case facing the second outer case. Accordingly, assembly work may be convenient.

[0014] Optionally, the above location marker may be paint.

[0015] Optionally, the side plate may include a first portion of the side plate that provides the vacuum space. Optionally, the side plate may include a second portion that is bent at the first portion of the side plate. Accordingly, assembly work can be performed conveniently.

[0016] Optionally, the second part of the side plate and the second plate can support each other.

[0017] The second part of the side plate and the second plate may not come into contact. Accordingly, thermal insulation loss can be reduced.

[0018] Optionally, the first outer case may be placed on the second portion of the side plate. Optionally, the first plate may have a first inner case adjacent to the vacuum space. Optionally, a second inner case further from the vacuum space than the first inner case may be included. Optionally, the first inner case may be placed on the second portion of the side plate. According to this configuration, the area where the vacuum space is formed and other areas are separated, thereby reducing thermal insulation loss due to the seal.

[0019] Optionally, the second plate may include a first outer case adjacent to the vacuum space. Optionally, the second plate may include a second outer case further from the vacuum space than the first outer case. Optionally, it may include a support block that guides the height at which the first outer case is placed in the height direction of the vacuum space. Accordingly, assembly by the worker may be made convenient by the support block. Effects of the invention

[0020] According to the present invention, an outer case can be provided by processing the second plate and the side plate into a single plate. Accordingly, the number of sealing points for fastening the plates is reduced, and the risk of vacuum failure can be largely eliminated.

[0021] According to the present invention, parts waste, re-welding, and product yield reduction can be prevented.

[0022] According to the present invention, the number of sealing points is reduced, parts can be standardized, parts can be integrated, and multiple vacuum insulation bodies can be exhausted, thereby improving the productivity of the vacuum insulation body.

[0023] According to the present invention, the assembly of the vacuum insulation is simplified and productivity is increased. Brief explanation of the drawing

[0024] FIG. 1 is a perspective view of a refrigerator according to an embodiment. FIG. 2 is a schematic drawing showing a vacuum insulation used in the main body and door of a refrigerator. FIG. 3 is a drawing showing an example of a support that maintains a vacuum space. FIG. 4 is a drawing illustrating an embodiment of a vacuum insulation body centered on a heat transfer resistor. Figure 5 is a graph observing the process of exhausting the interior of a vacuum insulation body with respect to time and pressure when a support is used. Figure 6 is a graph comparing vacuum pressure and gas conductivity. FIG. 7 is a drawing showing various embodiments of the vacuum space section. Fig. 8 is a drawing illustrating an additional insulating element. FIG. 9 is a drawing illustrating a conductive resistance sheet placed on a heat transfer path. FIG. 10 is a diagram illustrating the heat transfer path between first and second plates at different temperatures. FIG. 11 is a diagram illustrating a branch on a heat transfer path between first and second plates with different temperatures. FIG. 12 is a drawing illustrating a method for manufacturing a vacuum insulation body. FIG. 13 is a drawing illustrating the preliminary assembly of the first outer case and the second outer case. FIG. 14 is a drawing illustrating a position marker. FIG. 15 is a drawing showing a contact cross-section between outer cases. FIG. 16 is a drawing illustrating the biaxial assembly of the first outer case and the first vacuum insulation body. FIG. 17 is a drawing illustrating another embodiment in which the second outer case is adjacent to the first outer case. FIGS. 18 and 19 are drawings illustrating a support block that supports the gap between a second outer case and a first vacuum insulation body, wherein FIG. 18 is a drawing showing a cross-section of the vacuum insulation body and FIG. 19 is a drawing showing a plan view of the vacuum insulation body. FIG. 20 is a cross-sectional view of the bottom part of a vacuum insulation body. FIG. 21 is a cross-sectional view of the upper part of a vacuum insulation body. Specific details for implementing the invention

[0025] Specific embodiments of the present invention will be described in detail below with reference to the drawings. However, the concept of the present invention is not limited to the embodiments presented below. Those skilled in the art who understand the concept of the present invention may easily propose other embodiments included within the scope of the same concept by adding, changing, deleting, or adding components or limitations regarding components, and such are also to be considered to be included within the scope of the concept of the present invention. The present invention may have many embodiments in which the concept is embodied, and in each embodiment, any part may be substituted with a corresponding part or a part that performs an associated function with another embodiment. The present invention may be any one of the examples presented below or an example in which two or more are combined.

[0026] The present invention may be a vacuum adiabatic body comprising: a first plate; a second plate; a vacuum space formed between the first and second plates; and a seal for providing the vacuum space (vacuum space). The vacuum space may be a vacuum space provided in the internal space between the first plate and the second plate. The seal may seal the first plate and the second plate to provide the internal space provided in a vacuum state. The vacuum adiabatic body may optionally include a side plate connecting the first plate and the second plate. In the present invention, the expression "plate" may mean at least one of the first and second plates and the side plate. At least a portion of the first and second plates and the side plate may be integrally formed or at least a portion may be sealed together. Optionally, the vacuum adiabatic body may include a support for maintaining the vacuum space. The vacuum insulator may optionally include a thermal insulator to reduce the amount of heat transfer between a first space provided near the first plate and a second space provided near the second plate, or to reduce the amount of heat transfer between the first plate and the second plate. Optionally, the vacuum insulator may include a component fastening portion formed on at least a part of the plate. Optionally, the vacuum insulator may include an additional adiabatic body. The additional adiabatic body may be provided to be connected to the vacuum insulator. The additional adiabatic body may be an adiabatic body having the same or different vacuum level as the vacuum insulator. The additional adiabatic body may be an adiabatic body having a lower vacuum level than the vacuum insulator or an adiabatic body that does not contain a vacuum-state portion inside.In this case, it may be advantageous to connect other objects to the additional insulation.

[0027] In the present invention, the direction along the wall defining the vacuum space may include the longitudinal direction of the vacuum space and the height direction of the vacuum space. The height direction of the vacuum space may be defined as the direction of any one of the virtual lines connecting the first space and the second space, which will be described later, while penetrating the vacuum space. The longitudinal direction of the vacuum space may be defined as a direction perpendicular to the height direction of the vacuum space set. In the present invention, being connected to object A may be defined as at least a part of object A and at least a part of object B being directly connected, or at least a part of object A and at least a part of object B being connected through an intermedium interposed between objects A and B. The intermedium may be provided to at least one of object A and object B. The connection may include object A being connected to the intermedium, and the intermedium being connected to object B. A part of the intermedium may include a portion connected to either object A or object B. Another part of the above medium may include a portion connected to the other of object A and object B. As a variation, object A being connected to object B may include object A and object B being prepared integrally in a shape connected by the aforementioned method. In the present invention, an embodiment of the connection may be a support, combine, or seal described later. In the present invention, object A being supported by object B may be defined as object A being restricted from moving in one or more of the +X, -X, +Y, -Y, +Z, and -Z axis directions by object B. In the present invention, an embodiment of the support may be a combine or seal described later.In the present invention, the statement that object A is combined with object B can be defined as the movement of object A being restricted by object B in one or more of the X, Y, and Z axis directions. In the present invention, an embodiment of the combination may be a seal, which will be described later. In the present invention, the statement that object A is sealed with object B can be defined as a state in which fluid movement is not permitted at the part where object A and object B are connected. In the present invention, one or more objects, namely, at least a part of object A and object B, can be defined as including a part of object A, the whole of object A, a part of object B, the whole of object B, a part of object A and a part of object B, a part of object A and the whole of object B, the whole of object A and a part of object B, and the whole of object A and the whole of object B. In the present invention, the statement that plate A may be a wall defining space A can be defined as at least a part of plate A being a wall forming at least a part 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 invention, the central portion of the object may be defined as the central portion among the three portions when the object is divided into three equal parts based on the longitudinal direction of the object. The peripheral portion of the object may be defined as the portion located to the left or right of the central portion among the three portions. The peripheral portion of the object may include a surface in contact with the central portion and a surface opposite thereto. The surface opposite thereto may be defined as the border or edge of the object. Examples of the object may include a vacuum insulator, a plate, a heat transfer resistor, a support, a vacuum space, and various components to be introduced in the present invention.In the present invention, the degree of heat transfer resistance indicates the degree to which an object resists heat transfer, and can be defined as a value determined by the shape including the thickness of the object, the material of the object, and the processing method of the object. The above heat transfer resistance may be defined as the sum of the degree of conduction resistance, the degree of radiation resistance, and the degree of convection resistance. The vacuum insulation of the present invention may include a heat transfer path formed between spaces with different temperatures, or a heat transfer path formed between plates with different temperatures. For example, the vacuum insulation of the present invention may include a heat transfer path through which cold is transferred from a plate with a low temperature toward a plate with a high temperature. In the present invention, a curved portion may be defined as a portion connecting the first portion and the second portion, provided that the object includes a first portion extending in a first direction and a second portion extending in a second direction different from the first direction (including 90 degrees). In the present invention, a component fastening portion may be defined as a portion provided on a plate to which a component is connected. The component connected to the plate includes a penetrating component positioned to penetrate at least a portion of the plate and a surface on at least a portion of the plate It can be defined as a surface component positioned to be connected.

[0028] As an example of application of the above vacuum insulation, the present invention may include an apparatus having said vacuum insulation. An example of said apparatus may be an appliance. Examples of said appliance may include home appliances such as refrigerators, cooking appliances, washing machines, dishwashers, and air conditioners. As an example of application of said vacuum insulation to an appliance, said vacuum insulation may form at least a part of the main body and door of the appliance. As an example of said door, said vacuum insulation may form at least a part of a general door and a door-in-door (DID) that are in direct contact with said main body. Here, said door-in-door may refer to a small door placed inside said general door. As another example of application of said vacuum insulation, the present invention may include a wall having said vacuum insulation. An example of said wall may be a wall of a building including a window.

[0029] The present invention will be described in detail below with reference to the drawings. Each drawing accompanying the embodiment may differ from, be exaggerated from, or be simplified compared to the actual article, and detailed parts may be briefly indicated. The embodiment should not be interpreted as being limited only to the size, structure, and shape presented in the drawings. In the embodiment accompanying each drawing, if the descriptions do not conflict, a part of the configuration in the drawing of one embodiment may be applied to a part of the configuration in the drawing of another embodiment, and a part of the structure of one embodiment may be applied to a part of the structure of another embodiment. In the description of the drawings for the embodiment, the same reference numeral may be assigned to specific components forming the embodiment in different drawings. Components having the same reference numeral may perform the same function. For example, the first plate forming the vacuum insulation body has a part corresponding to the first space throughout all embodiments and is indicated by reference numeral 10. Although the first plate has the same number for all embodiments and may have a part corresponding to the first space, the shape of the first plate may differ in each embodiment. In addition to the first plate mentioned above, the side plate, the second plate, and additional insulation materials can be understood in the same way.

[0030] FIG. 1 is a perspective view of a refrigerator according to an embodiment, and FIG. 2 is a schematic drawing showing a vacuum insulation used in the main body and door of the refrigerator. Referring to FIG. 1, the refrigerator (1) includes a main body (2) provided with a cavity (9) capable of storing items, and a door (3) provided to open and close the main body (2). The door (3) is arranged to be rotatable or sliding so as to open and close the cavity (9). The cavity (9) may provide at least one of a refrigerator compartment and a freezer compartment. A cold source may be provided to supply cold air to the cavity. For example, the cold source may be an evaporator (7) that removes heat by evaporating a refrigerant. The evaporator (7) may be connected to a compressor (4) that compresses the evaporated refrigerant to the cold source. The evaporator (7) may be connected to a condenser (5) that condenses the compressed refrigerant to the cold source. The above evaporator (7) may be connected to an expander (6) that expands the condensed refrigerant in the above cold source. A fan corresponding to the above evaporator and the above condenser may be provided to facilitate heat exchange. As another example, the above cold source may be the heat absorption surface of a thermoelectric element. A heat absorption sink may be connected to the heat absorption surface of the above thermoelectric element. A heat dissipation sink may be connected to the heat dissipation surface of the above thermoelectric element. A fan corresponding to the above heat absorption surface and the above heat dissipation surface may be provided to facilitate heat exchange.

[0031] Referring to FIG. 2, the plates (10, 15, 20) may be walls defining the vacuum space. The plates may be walls partitioning the vacuum space and the external space of the vacuum space. Examples of the plates are as follows. The present invention may be any one of the following examples or an example in which two or more are combined.

[0032] The plate may be provided as a single part or may be provided to include at least two parts connected to each other. As a first example, the plate may include at least two parts connected to each other in a direction along the wall defining the vacuum space. Either of the two parts may include a part forming the vacuum space (e.g., a first part). The first part may be a single part or may include at least two parts sealed to each other. The other of the two parts may include a part extending away from the first part of the first plate in a direction away from the vacuum space or extending inwardly into the vacuum space (e.g., a second part). As a second example, the plate may include at least two layers connected to each other in the thickness direction of the plate. Either of the two layers may include a layer forming the vacuum space (e.g., a first part). The other of the two layers may include a part (e.g., a second part) provided in the external space (e.g., a first space, a second space) of the vacuum space. In this case, the second part may be defined as the outer cover of the plate. The other of the two layers may include a portion (e.g., the second part) provided in the vacuum space. In this case, the second part may be defined as the inner cover of the plate.

[0033] The above plate may include a first plate (10) and a second plate (20). One side of the first plate (“inner surface of the first plate”) may provide a wall defining the vacuum space, and the other side of the first plate (“outer surface of the first plate”) may provide a wall defining the first space. The first space may be a space provided near the first plate, a space formed by the device, or an internal space of the device. In this case, the first plate may be referred to as an inner case. If the first plate and an additional member form the internal space, the first plate and the additional member may be referred to as an inner case. The inner case may include two or more layers. In this case, one of the multiple layers may be referred to as an inner panel. One side of the second plate (“inner surface of the second plate”) may provide a wall defining the vacuum space, and the other side of the second plate (“outer surface of the second plate”) may provide a wall defining the second space. The second space may be a space provided near the second plate, another space formed by the device, or an external space of the device. In this case, the second plate may be referred to as an outer case. If the second plate and an additional member form the external space, the second plate and the additional member may be referred to as an outer case. The outer case may include two or more layers. In this case, one of the multiple layers may be referred to as an outer panel. The second space may be a space with a higher temperature than the first space or a space with a lower temperature than the first space. Optionally, the plate may include a side plate (15). In FIG. 2, the side plate may also perform the function of a conductive resistance sheet (60) described later, depending on the position in which it is placed.The above side plate may include a portion extending in the height direction of the space formed between the first plate and the second plate, or a portion extending in the height direction of the vacuum space. One side of the side plate may provide a wall defining the vacuum space, and the other side of the side plate may provide a wall defining the external space of the vacuum space. The external space of the vacuum space may be at least one of the first space and the second space, or a space in which an additional insulating material to be described later is disposed. The side plate may be integrally formed by extending at least one of the first plate and the second plate, or may be a separate part connected to at least one of the first plate and the second plate.

[0034] The above plate may optionally include a curved portion. In the present invention, a plate including a curved portion may be referred to as a bent plate. The curved portion may be provided in at least one of the first plate, the second plate, the side plate, the space between the first plate and the second plate, the space between the first plate and the side plate, and the space between the second plate and the side plate. The plate may include at least one of a first curved portion and a second curved portion, and examples thereof are as follows. First, the side plate may include the first curved portion. A part of the first curved portion may include a portion connected to the first plate. Another part of the first curved portion may include a portion connected to the second curved portion. In this case, the radius of curvature of the first curved portion and the second curved portion may be large. Another part of the first curved portion may be connected to an additional straight portion or an additional curved portion provided between the first curved portion and the second curved portion. In this case, the radius of curvature of the first curved section and the second curved section may be small. Second, the side plate may include the second curved section. A part of the second curved section may include a portion connected to the second plate. Another part of the second curved section may include a portion connected to the first curved section. In this case, the radius of curvature of the first curved section and the second curved section may be large. Another part of the second curved section may be connected to an additional straight section or an additional curved section provided between the first curved section and the second curved section. In this case, the radius of curvature of the first curved section and the second curved section may be small. Here, the straight section may be defined as a part having a larger radius of curvature than the curved section. The straight section may be understood as a perfect plane or a part having a larger radius of curvature than the curved section.Third, the first plate may include the first curved portion. A portion of the first curved portion may include a portion connected to the side plate. The portion connected to the side plate may be provided at a position away from the second plate in the portion where the first plate extends in the longitudinal direction of the vacuum space. Fourth, the second plate may include the second curved portion. A portion of the second curved portion may include a portion connected to the side plate. The portion connected to the side plate may be provided at a position away from the first plate in the portion where the second plate extends in the longitudinal direction of the vacuum space. The present invention may include a combination of either one of the first and second examples described above and either one of the third and fourth examples described above.

[0035] In the present invention, the vacuum space (50) may be defined as a third space. The vacuum space may be a space where vacuum pressure is maintained. In the present invention, the expression that A has a higher degree of vacuum than B means that the vacuum pressure of A is lower than the vacuum pressure of B.

[0036] In the present invention, the sealing portion (61) may be a portion provided between the first plate and the second plate. Examples related to sealing are as follows. The present invention may be any one of the following examples or an example in which two or more are combined. The sealing may include fusion welding, which joins the plurality of objects by melting at least a portion of the plurality of objects. For example, the first plate and the second plate may be fused by laser welding, etc., without the interposition of a medium, or a portion of the first and second plates and a portion of the component fastening portion may be fused by high-frequency brazing, etc., with the interposition of a medium such as a filler agent, or the plurality of objects may be fused by a heat-generating medium (e.g., melting bond). The sealing may include pressure welding, which joins the plurality of objects by mechanical pressure applied to at least a portion of the plurality of objects. For example, as a part connected to the above-mentioned part fastening portion, an object made of a material with a lower deformation resistance than the plate may be press-welded by a method such as pinch-off.

[0037] A machine room (8) may be optionally provided on the outer side of the vacuum insulation body. The machine room may be defined as a space in which components connected to the cold source are stored. Optionally, the vacuum insulation body may include a pipe (40). The pipe may be provided on one side of the vacuum insulation body to exhaust air from the vacuum space (50). Optionally, the vacuum insulation body may include a conduit (64) penetrating the vacuum space (50) for installing components connected to the first space and the second space. Examples of the aforementioned pipe may be ports such as exhaust ports or getter ports.

[0038] FIG. 3 is a drawing showing an embodiment of a support that maintains the vacuum space. Examples of the support are as follows. The present invention may be any one of the following examples or an example in which two or more are combined.

[0039] The above supports (30, 31, 33, 35) may be provided to support at least a portion of the plate and the heat transfer resistor described later, so as to reduce deformation of at least a portion of the vacuum space (50), the plate, and the heat transfer resistor described later due to an external force. The external force includes at least one of vacuum pressure and an external force excluding vacuum pressure. If the deformation occurs in a direction in which the height of the vacuum space decreases, the supports may reduce the increase of at least one of the radiative heat conduction, gas heat conduction, surface heat conduction, and supporter heat conduction described later. The supports may be objects provided to maintain a gap between the first plate and the second plate, or objects provided to support the heat transfer resistor. The supports may have a greater degree of deformation resistance than the plate, or may be provided to a portion of the vacuum insulation, the device having the vacuum insulation, the wall having the vacuum insulation, etc., where the degree of deformation resistance is weak. In the present invention, the degree of deformation resistance indicates the degree to which an object resists deformation caused by an external force applied to the object, and can be defined as a value determined by the shape including the thickness of the object, the material of the object, and the processing method of the object. Examples of parts with weak deformation resistance may include the vicinity of or at least a part of the curved portion formed by the plate, or the vicinity of or at least a part of the opening formed in the main body of the device provided by the plate. The support may be arranged to surround at least a part of the curved portion or the opening, or provided to correspond to the shape of the curved portion or the opening, but the support is not excluded from being provided in other parts. The opening may be understood as a part of the device having a main body and a door capable of opening and closing the opening formed in the main body.

[0040] Examples of how the support is provided to support the plate are as follows. First, at least a portion of the support may be provided in a space formed inside the plate. The plate may comprise a portion having a plurality of layers, and the support may be provided between the plurality of layers. Optionally, the support may be provided to be connected to at least a portion of the plurality of layers or to be provided to support at least a portion of the plurality of layers. Second, at least a portion of the support may be provided to be connected to a surface formed outside the plate. The support may be provided in the vacuum space portion or in the space outside the vacuum space portion. For example, the plate may comprise a plurality of layers, and the support may be provided to any one of the plurality of layers. Optionally, the support may be provided to support another of the plurality of layers. For another example, the plate may comprise a plurality of portions extending in the longitudinal direction, and the support may be provided to any one of the plurality of portions. Optionally, the support may be provided to support another of the plurality of portions. As another example, the support may be provided in the vacuum space or the external space of the vacuum space as a component distinct from the plate. Optionally, the support may be provided to support at least a portion of the surface formed on the outside of the plate. Optionally, the support may be provided to support one surface of the first plate and one surface of the second plate, and the one surface of the first plate and the one surface of the second plate may be provided to face each other. Thirdly, the support may be provided integrally with the plate. An example in which the support is provided to support the heat transfer resistor can be understood as an example in which the support is provided to support the plate. Redundant explanations are omitted.

[0041] Examples of how the above support is designed to reduce heat transfer through the support are as follows. First, at least a portion of a component disposed near the support may be provided so as not to come into contact with the support or disposed in an empty space provided by the support. Examples of the component may include a heat transfer resistor, an exhaust port, a getter port, a pipe or component connected to the plate, a pipe or component penetrating the vacuum space, or a pipe or component in which at least a portion is disposed in the vacuum space, etc. Examples of the empty space may include an empty space provided inside the support, an empty space provided between a plurality of supports, or an empty space provided between the support and a separate component distinguished from the support. Optionally, at least a portion of the component may be disposed in a through hole formed in the support, disposed between a plurality of bars, disposed between a plurality of connecting plates, or disposed between a plurality of support plates. Optionally, at least a portion of the component may be disposed in a space spaced apart between a plurality of bars, disposed in a space spaced apart between a plurality of connecting plates, or disposed in a space spaced apart between a plurality of support plates. Second, an insulating material may be provided on at least a portion of the support or in the vicinity of at least a portion of the support. The insulating material may be provided to be in contact with the support or not in contact with it. The insulating material may be provided at the portion where the support and the plate are in contact. The insulating material may be provided on at least a portion of one side and the other side of the support, or provided to cover at least a portion of one side and the other side of the support. The insulating material may be provided on at least a portion of the vicinity of one side of the support and the vicinity of the other side of the support, or provided to cover at least a portion of the vicinity of one side of the support and the vicinity of the other side of the support.The support comprises a plurality of bars, and an insulating material may be placed in the area from a point where any one of the plurality of bars is located to an intermediate point between any one bar and surrounding bars. Third, if cold air is transmitted through the support, a heat source may be placed at the location where the insulating material described in the second example is placed. If the temperature of the first space is lower than the temperature of the second space, the heat source may be placed on the second plate or near the second plate. If heat is transmitted through the support, a cold source may be placed at the location where the insulating material described in the second example is placed. If the temperature of the first space is higher than the temperature of the second space, the cold source may be placed on the second plate or near the second plate. As a fourth example, the support may include a portion having a heat transfer resistance higher than that of metal or a heat transfer resistance higher than that of the plate. The above support may include a portion having a lower thermal transfer resistance than an additional adiabatic body. The support may include at least one of a non-metallic material, PPS and GF (Glass Fiber), low outgassing PC, PPS, and LCP. This is because high compressive strength, low outgassing and water absorption, low thermal conductivity, high compressive strength at high temperatures, and excellent processability can be obtained.

[0042] Examples of supports may include a bar (30, 31), a connecting plate (35), a support plate (35), a porous material (33), and a filler (33). In the present invention, the support may be any one of the above examples or include an example in which at least two are combined. As a first example, the support may include a bar (30, 31). The bar may include a portion extending in a direction connecting the first plate and the second plate to support the gap between the first plate and the second plate. The bar may include a portion extending in the height direction of the vacuum space or a portion extending in a direction substantially perpendicular to the direction in which the plate extends. The bar may be provided to support only one of the first plate and the second plate, or the bar may be provided to support both the first plate and the second plate. For example, one side of the bar may be provided to support a part of the plate, and the other side of the bar may be provided so as not to come into contact with another part of the plate. As another example, one side of the bar may be provided to support at least a portion of the plate, and the other side of the bar may be provided to support another portion of the plate. The support may include a bar with a hollow space provided therein, or the support may include a plurality of bars with a hollow space provided between the plurality of bars, or the support may include a bar with a hollow space provided between separate parts provided apart from the bar. The support may optionally include a connecting plate (35) that includes a portion connected to the bar or a portion connecting the plurality of bars. The connecting plate may include a portion extending in the longitudinal direction of the vacuum space or a portion extending along the direction in which the plate extends. The cross-sectional area of ​​the XZ plane of the connecting plate may be larger than the cross-sectional area of ​​the XZ plane of the bar.The connecting plate may be provided on at least one of the first and second surfaces of the bar, or between the first and second surfaces of the bar. At least one of the first and second surfaces of the bar may be a surface on which the bar supports the plate. The shape of the connecting plate is not limited. The support may include a connecting plate provided with a void space inside, or the support may include a plurality of connecting plates with a void space provided between the plurality of connecting plates, or the support may include a connecting plate and be arranged so that a void space is provided between a separate part provided separately from the connecting plate. As a second example, the support may include a support plate (35). The support plate may include a portion extending in the longitudinal direction of the vacuum space or a portion extending along the direction in which the plate extends. The support plate may be provided to support only one of the first plate and the second plate, or the support plate may be provided to support both the first plate and the second plate. For example, one side of the support plate may be provided to support a portion of the plate, and the other side of the support plate may be provided so as not to come into contact with another portion of the plate. As another example, one side of the support plate may be provided to support at least a portion of the plate, and the other side of the support plate may be provided to support another portion of the plate. The cross-sectional shape of the support plate is not limited. The support may include a support plate provided with a void space inside, the support may include a plurality of support plates with a void space provided between the plurality of support plates, or the support may include a support plate and be arranged so that a void space is provided between a separate part provided separately from the support plate.As a third example, the support may include a porous material (33) or a filler (33). The interior of the vacuum space may be supported by the porous material or filler. The interior of the vacuum space may be wholly filled by the porous material or filler. The support may include a plurality of porous materials or a plurality of fillers, and the plurality of porous materials or a plurality of fillers may be arranged to be in contact. Where a void is provided within the porous material, where a void is provided between a plurality of porous materials, or where a void is provided between the porous material and a separate part distinguished from the porous material, the porous material may be understood as either a connecting plate or a support plate as described above. In cases where a void space is provided inside the filler, a void space is provided between a plurality of fillers, or a void space is provided between the filler and a separate part distinct from the filler, the filler may be understood as either a connecting plate or a support plate as described above. The support of the present invention may include any one of the aforementioned examples or an example in which two or more are combined.

[0043] Referring to FIG. 3a, as an embodiment, the support may include a bar (31) and a connecting plate and support plate (35). The connecting plate and the support plate may be designed separately. Referring to FIG. 3b, as an embodiment, the support may include a bar (31), a connecting plate and support plate (35), and a porous material (33) filled inside the vacuum space. The porous material (33) may have a higher emissivity than stainless steel, which is the material of the plate, but since it fills the vacuum space, it has a high resistance efficiency for radiant heat transfer. The porous material may also perform the function of a heat transfer resistor, which will be described later. More preferably, the porous material may perform the function of a radiant resistance sheet, which will be described later. Referring to FIG. 3c, as an embodiment, the support may include a porous material (33) or a filler (33). The porous material (33) can be provided in a compressed state to maintain the spacing of the vacuum space. The film (34) can be provided, for example, as a PE material with holes. The porous material (33) or the filler can perform both the function of a heat transfer resistor, which will be described later, and the function of the support. More preferably, the porous material can perform both the function of a radiation resistance sheet, which will be described later, and the function of the support.

[0044] FIG. 4 is a diagram illustrating an embodiment of a vacuum insulator centered on a thermal insulator (32, 33, 60, 63, thermal insulator, heat transfer resistance body). The vacuum insulator of the present invention may optionally include a thermal insulator. Examples of the thermal insulator are as follows. The present invention may be any one of the examples below or an example in which two or more are combined.

[0045] The heat transfer resistor (32, 33, 60, 63) may be an object that reduces the amount of heat transfer between the first space and the second space, or an object that reduces the amount of heat transfer between the first plate and the second plate. The heat transfer resistor may be placed on a heat transfer path formed between the first space and the second space, or on a heat transfer path formed between the first plate and the second plate. The heat transfer resistor may include a portion extending in a direction along the wall defining the vacuum space, or the heat transfer resistor may include a portion extending along the direction in which the plate extends. Optionally, the heat transfer resistor may include a portion extending from the plate away from the vacuum space. The heat transfer resistor may be provided in at least a portion of the periphery of the first plate and the periphery of the second plate, or in at least a portion of the edge of the first plate and the edge of the second plate. The heat transfer resistor may be provided in a portion where a through hole is formed, or as a tube connected to the through hole. A separate tube or a separate component distinct from the tube may be disposed inside the tube. The heat transfer resistor may include a portion having a greater heat transfer resistance than the plate. In this case, the thermal insulation performance of the vacuum insulation may be further improved. A shield (62) may be provided on the outside of the heat transfer resistor to provide insulation. The inside of the heat transfer resistor may be insulated by a vacuum space. The shield may be provided as a porous material or filler that contacts the outside of the inside of the heat transfer resistor. The shielding portion may be provided as an insulating structure, exemplified by a separate gasket placed on the outside of the heat transfer resistor. The heat transfer resistor may be a wall defining the third space.

[0046] An example in which a heat transfer resistor is connected to and provided on the plate can be understood by replacing the support with the heat transfer resistor in an example in which the support is provided to support the plate. Redundant descriptions are omitted. An example in which a heat transfer resistor is connected to and provided on the support can be understood by replacing the plate with the support in an example in which the heat transfer resistor is connected to and provided on the plate. Redundant descriptions are omitted. An example of reducing heat transfer via the heat transfer resistor can be applied as a substitute for an example of reducing heat transfer via the support, and the same description is omitted.

[0047] In the present invention, the heat transfer resistor may be any one of a radiation resistance sheet (32), a porous material (33), a filler (33), and a conduction resistance sheet. In the present invention, the heat transfer resistor may include a mixture of at least two of a radiation resistance sheet (32), a porous material (33), a filler (33), and a conduction resistance sheet. As a first example, the heat transfer resistor may include a radiation resistance sheet (32). The radiation resistance sheet may include a portion having a heat transfer resistance greater than that of the plate, and the heat transfer resistance may be a degree of resistance to heat transfer by radiation. The support may perform the function of the radiation resistance sheet. The conduction resistance sheet described later may perform the function of the radiation resistance sheet. As a second example, the heat transfer resistor may include a conduction resistance sheet (60, 63). The above-mentioned conductive resistance sheet may include a portion having a greater thermal transfer resistance than the plate, and the thermal transfer resistance may be the degree of resistance to heat transfer by conduction. For example, the above-mentioned conductive resistance sheet may have a thickness smaller than at least a portion of the plate. As another example, the above-mentioned conductive resistance sheet may include one end and the other end, and the length of the above-mentioned conductive resistance sheet may be longer than the straight distance connecting one end of the above-mentioned conductive resistance sheet and the other end of the above-mentioned conductive resistance sheet. As yet another example, the above-mentioned conductive resistance sheet may include a material having a greater thermal transfer resistance by conduction than the plate. As yet another example, the above-mentioned thermal transfer resistor may include a portion having a smaller radius of curvature than the plate.

[0048] Referring to FIG. 4a, for example, a conductive resistance sheet may be provided on a side plate connecting the first plate and the second plate. Referring to FIG. 4b, for example, a conductive resistance sheet (60) may be provided on at least a portion of the first plate and the second plate. A connecting frame (70) may be further provided on the outside of the conductive resistance sheet. The connecting frame may be an extended portion of the first plate or the second plate, or an extended portion of the side plate. Optionally, the connecting frame (70) may include a portion to which components disposed on the outside of the vacuum space are connected, such as a component for sealing between the door and the main body, an exhaust port required for the exhaust process, and a getter port for maintaining a vacuum. Referring to FIG. 4c, for example, a conductive resistance sheet may be provided on a side plate connecting the first plate and the second plate. The conductive resistance sheet may be installed in a through hole penetrating the vacuum space. The conduit (64) may be separately provided on the outer side of the conductive resistance sheet. The conductive resistance sheet may be provided in a corrugated form. This allows the heat transfer path to be extended and prevents deformation caused by pressure difference. A separate shielding member for insulating the conductive resistance sheet (63) may also be provided. The conductive resistance sheet may include a portion having a deformation resistance smaller than that of at least one of the plate, the radiation resistance sheet, and the support. The radiation resistance sheet may include a portion having a deformation resistance smaller than that of at least one of the plate and the support. The plate may include a portion having a deformation resistance smaller than that of the support. The conductive resistance sheet may include a portion having a conductive heat transfer resistance greater than that of at least one of the plate, the radiation resistance sheet, and the support. The radiation resistance sheet may include a portion having a radiative heat transfer resistance greater than that of at least one of the plate, the conductive resistance sheet, and the support.The support may include a portion having a heat transfer resistance greater than that of the plate. For example, at least one of the plate, the conductive resistance sheet, and the connecting frame may be made of stainless steel, the radiation resistance sheet may be made of aluminum, and the support may be made of a resin material.

[0049] FIG. 5 is a graph observing the process of evacuating the interior of a vacuum insulation body with respect to time and pressure when a support is used. An example of the vacuum evacuation step of the vacuum insulation body is as follows. The present invention may be any one of the following examples or an example in which two or more are combined.

[0050] While the above exhaust step is being performed, an outgassing step may be performed, which is a process in which gas in the vacuum space is exhausted or potential gas remaining in the components of the vacuum insulation is exhausted. As an example of the outgassing step, the exhaust step may include at least one of the steps of heating or drying the vacuum insulation, applying vacuum pressure to the vacuum insulation, and providing a getter to the vacuum insulation. In this case, the potential gas remaining in the components provided in the vacuum space may be vaporized and exhausted. The exhaust step may include a step of cooling the vacuum insulation. The cooling step may be performed after the step of heating or drying the vacuum insulation is performed. Preferably, the step of heating or drying the vacuum insulation and the step of applying vacuum pressure to the vacuum insulation may be performed together. Preferably, the step of heating or drying the vacuum insulation and the step of providing a getter to the vacuum insulation may be performed together. Preferably, after the step of heating or drying the vacuum insulation is performed, the step of cooling the vacuum insulation may be performed. Preferably, the step of providing vacuum pressure to the vacuum insulation and the step of providing a getter to the vacuum insulation may be performed so as not to overlap. For example, the step of providing a getter to the vacuum insulation may be performed after the step of providing vacuum pressure to the vacuum insulation is performed. When vacuum pressure is provided to the vacuum insulation, the pressure in the vacuum space may drop to a certain level and then stop dropping further. At this time, the step of providing vacuum pressure to the vacuum insulation may be stopped, and the getter may be introduced. An example of stopping the step of providing vacuum pressure to the vacuum insulation may be the cessation of the operation of the vacuum pump connected to the vacuum space. When introducing the getter, the step of heating or drying the vacuum insulation may be performed simultaneously. Through this, outgassing can be promoted.As another example, after the step of providing a getter to the vacuum insulation is performed, the step of providing vacuum pressure to the vacuum insulation may be performed.

[0051] The time during which the vacuum evacuation step of the vacuum insulation body is performed may be referred to as the vacuum evacuation time. The vacuum evacuation time may include at least one of △t1, △t2, and △t3. The time during which the step of heating or drying the vacuum insulation body is performed may be defined as △t1. The time during which the step of maintaining the vacuum insulation body with a getter inserted may be performed may be defined as △t2. The time during which the step of cooling the vacuum insulation body is performed may be defined as △t3. It is desirable to control the vacuum evacuation time so that it is performed within a predetermined time, taking into account the size of the unit body for manufacturing the vacuum insulation body, the physical properties of the components constituting the vacuum insulation body, and the vacuum pressure of the vacuum space. Through this, mass production may be possible.

[0052] In the vacuum evacuation step of the vacuum insulation above, △t1 may be greater than or equal to t1a and less than or equal to t1b. As a first example, t1a may be greater than or equal to 0.2hr and less than or equal to 0.5hr. t1b may be greater than or equal to 1hr and less than or equal to 24.0hr. Preferably, △t1 may be greater than or equal to 0.3hr and less than or equal to 12.0hr. Preferably, △t1 may be greater than or equal to 0.4hr and less than or equal to 8.0hr. More preferably, △t1 may be greater than or equal to 0.5hr and less than or equal to 4.0hr. In this case, the vacuum insulation may be sufficient for outgassing even if △t1 is maintained as short as possible. For example, among the components of the vacuum insulation, a component exposed to the vacuum space may include a part having a lower outgassing rate (%) than any of the components of the vacuum insulation exposed to the external space of the vacuum space. For example, the component exposed to the vacuum space may include a part having a lower outgassing rate than a thermoplastic polymer. Examples of the thermoplastic polymer may include polyethylene or high-density polyethylene. As a more specific example, a support or a radiation-resistant sheet may be placed in the vacuum space, and the outgassing rate of the support may be lower than that of the thermoplastic polymer. As another example, among the components of the vacuum insulation, a component exposed to the vacuum space may include a part having a higher maximum operating temperature (°C) than any of the components of the vacuum insulation exposed to the external space of the vacuum space. In this case, the vacuum insulation can be heated to a higher temperature, thereby increasing the outgassing rate.For example, the component exposed to the vacuum space may include a portion with a higher operating temperature than the thermoplastic polymer. Examples of the thermoplastic polymer may include polyethylene or high-density polyethylene. As a more specific example, a support or a radiation-resistant sheet may be placed in the vacuum space, and the operating temperature of the support may be higher than that of the thermoplastic polymer. As another example, among the components of the vacuum insulator, the component exposed to the vacuum space may include a greater amount of metal material than non-metal material. That is, the mass of the metal material may be greater than the mass of the non-metal material, the volume of the metal material may be greater than the volume of the non-metal material, or the area of ​​the metal material exposed to the vacuum space may be greater than the area of ​​the non-metal material exposed to the vacuum space. In the case where there are multiple parts exposed to the vacuum space, the sum of the volume of the metal material contained in the first part and the volume of the metal material contained in the second part may be greater than the sum of the volume of the non-metal material contained in the first part and the volume of the non-metal material contained in the second part. In the case where there are multiple parts exposed to the vacuum space, the sum of the mass of the metal material contained in the first part and the mass of the metal material contained in the second part may be greater than the sum of the mass of the non-metal material contained in the first part and the mass of the non-metal material contained in the second part. In the case where there are multiple parts exposed to the vacuum space, the sum of the area of ​​the metal material included in the first part exposed to the vacuum space and the area of ​​the metal material included in the second part exposed to the vacuum space may be greater than the sum of the area of ​​the non-metal material included in the first part exposed to the vacuum space and the area of ​​the non-metal material included in the second part exposed to the vacuum space. As a second example, the above t1a may be a value greater than or equal to 0.5hr and less than or equal to 1hr. The above t1b is 24.It may be greater than or equal to 0 hr and less than or equal to 65 hr. Preferably, △t1 may be 1.0 hr or more and 48.0 hr or less. Preferably, △t1 may be 2 hr or more and 24.0 hr or less. More preferably, △t1 may be 3 hr or more and 12.0 hr or less. In this case, it may be a vacuum insulator that needs to maintain △t1 as long as possible. Examples of this case may include the opposite of the examples described in the first example above, or the case where the part exposed to the vacuum space is a thermoplastic material. Redundant descriptions are omitted.

[0053] In the vacuum evacuation step of the vacuum insulation body above, △t2 may be greater than or equal to t2a and less than or equal to t2b. t2a may be greater than or equal to 0.1hr and less than or equal to 0.3hr. t2b may be greater than or equal to 1hr and less than or equal to 5.0hr. Preferably, △t2 may be greater than or equal to 0.2hr and less than or equal to 3.0hr. More preferably, △t2 may be greater than or equal to 0.3hr and less than or equal to 2.0hr. More preferably, △t2 may be greater than or equal to 0.5hr and less than or equal to 1.5hr. In this case, the vacuum insulation body may be sufficient for outgassing through a getter even if △t2 is maintained as short as possible.

[0054] In the vacuum exhaust step of the vacuum insulation body, the above △t3 may be greater than or equal to t3a and less than or equal to t3b. The above t2a may be greater than or equal to 0.2hr and less than or equal to 0.8hr. The above t2b may be greater than or equal to 1hr and less than or equal to 65.0hr. Preferably, the above △t3 may be greater than or equal to 0.2hr and less than or equal to 48.0hr. Preferably, the above △t3 may be greater than or equal to 0.3hr and less than or equal to 24.0hr. More preferably, the above △t3 may be greater than or equal to 0.4hr and less than or equal to 12.0hr. More preferably, the above △t3 may be greater than or equal to 0.5hr and less than or equal to 5.0hr. The above cooling step may be performed after the heating or drying step is performed during the above exhaust step. For example, if the time taken for the heating or drying step is long, the above △t3 may be extended.

[0055] As an example, the vacuum insulation of the present invention may be designed such that △t1 is greater than △t2. The vacuum insulation of the present invention may be designed such that △t1 is less than or equal to △t3. The vacuum insulation of the present invention may be designed such that △t3 is greater than △t2. More preferably, it may be designed such that △t2 < △t1 ≤ △t3. As an example, the vacuum insulation of the present invention may be designed such that △t1 + △t2 + △t3 is greater than or equal to 0.3 hr and less than or equal to 70 hr. Preferably, it may be designed such that △t1 + △t2 + △t3 is greater than or equal to 1 hr and less than or equal to 65 hr. Preferably, it may be designed such that △t1 + △t2 + △t3 is greater than or equal to 2 hr and less than or equal to 24 hr. More preferably, △t1+△t2+△t3 can be designed to be greater than or equal to 3hr and less than or equal to 6hr.

[0056] Examples of vacuum pressure conditions during the above exhaust step are as follows. The present invention may be any one of the following examples or an example in which two or more are combined. During the above exhaust step, the minimum vacuum pressure of the vacuum space may be greater than 1.8E-6 Torr. Preferably, the minimum vacuum pressure may be greater than 1.8E-6 Torr and less than or equal to 1.0E-4 Torr, greater than 0.5E-6 Torr and less than or equal to 1.0E-4 Torr, greater than 0.5E-6 Torr and less than or equal to 0.5E-5 Torr. More preferably, the minimum vacuum pressure may be greater than 0.5E-6 Torr and less than 1.0E-5 Torr. Limiting the minimum vacuum pressure provided during the above exhaust step in this way is because, even if pressure reduction is performed by a vacuum pump during the above exhaust step, the rate at which the vacuum pressure decreases slows down below a certain level. As an example, after the exhaust step is performed, the vacuum pressure of the vacuum space may be maintained at a pressure greater than or equal to 1.0E-5 Torr and less than or equal to 5.0E-1 Torr. The maintained vacuum pressure may be greater than or equal to 1.0E-5 Torr, less than or equal to 1.0E-1 Torr, greater than or equal to 1.0E-5 Torr, less than or equal to 1.0E-2 Torr, greater than or equal to 1.0E-4 Torr, less than or equal to 1.0E-2 Torr, greater than or equal to 1.0E-5 Torr, less than or equal to 1.0E-3 Torr, greater than or equal to 1.0E-4 Torr, and less than or equal to 1.0E-3 Torr. As a result of predicting the change in vacuum pressure through accelerated testing of two example products, it was confirmed that one vacuum pressure was maintained at 1.0E-04 Torr or lower even after 16.3 years, and the other vacuum pressure was maintained at 1.0E-04 Torr or lower even after 17.8 years.As such, the vacuum pressure of the vacuum insulation must be maintained below a predetermined level, even with aging changes, in order to be utilized in a desirable industrial manner.

[0057] Figure 5a is a graph of the elapsed time and pressure of an exhaust process according to one example, and Figure 5b explains the results of a long-term vacuum maintenance experiment conducted as an accelerated test on a vacuum insulation of a refrigerator with an internal volume of 128 liters. Referring to Figure 5b, it can be seen that the vacuum pressure gradually increases with age. For example, it was confirmed that it reached 6.7E-04 Torr after 4.7 years, 1.7E-03 Torr after 10 years, and 1.0E-02 Torr after 59 years. Based on these experimental results, it can be confirmed that the vacuum insulation according to the example is sufficiently suitable for industrial application.

[0058] FIG. 6 is a graph comparing vacuum pressure and gas conductivity. Referring to FIG. 6, the gas conductivity according to vacuum pressure is shown as a graph of the actual heat transfer coefficient (eK) according to the size of the gap inside the vacuum space (50). The gap of the vacuum space was measured in three cases: 3 mm, 4.5 mm, and 9 mm. The gap of the vacuum space is defined as follows: when the radiation resistance sheet (32) is inside the vacuum space, it is the distance between the radiation resistance sheet and the adjacent plate, and when the radiation resistance sheet is not inside the vacuum space, it is the distance between the first plate and the second plate. It was observed that the point corresponding to the actual heat transfer coefficient of 0.0196 W / mk, which is provided by foaming polyurethane as an insulating material, is 5.0E-1 Torr even when the gap size is small at 3 mm. Meanwhile, it was confirmed that even if the vacuum pressure decreases, the point at which the reduction effect of the insulation effect due to gas conduction heat becomes saturated is approximately 4.5E-3 Torr. The pressure of 4.5E-3 Torr can be determined as the point at which the reduction effect of gas conduction heat becomes saturated. In addition, when the actual heat transfer coefficient is 0.01 W / mk, it is 1.2E-2 Torr. An example presenting the range of vacuum pressure in the vacuum space according to the gap is as follows. When the support includes at least one of a bar, a connecting plate, and a support plate, and the gap in the vacuum space is greater than or equal to 3 mm, the vacuum pressure may be greater than or equal to A and less than 5E-1 Torr, or greater than 2.65E-1 Torr and less than 5E-1 Torr. As another example, the support comprises at least one of a bar, a connecting plate, and a support plate, and when the gap of the vacuum space is greater than or equal to 4.5 mm, the vacuum pressure may be greater than or equal to A and less than 3E-1 Torr, greater than 1.2E-2 Torr, and less than 5E-1 Torr.As another example, the support comprises at least one of a bar, a connecting plate, and a support plate, and when the gap of the vacuum space is greater than or equal to 9 mm, the vacuum pressure may be greater than or equal to A and less than 1.0 × 10⁻¹ Torr, greater than 4.5 E⁻³ Torr, and less than 5 E⁻¹ Torr, where A may be greater than or equal to 1.0 × 10⁻⁶ Torr and less than or equal to 1.0 E⁻⁵ Torr. Preferably, A may be greater than or equal to 1.0 × 10⁻⁵ Torr and less than or equal to 1.0 E⁻⁴ Torr. When the support comprises a porous material or a filler, the vacuum pressure may be greater than or equal to 4.7 E⁻² Torr and less than or equal to 5 E⁻¹ Torr. In this case, the size of the gap can be understood to be from several micrometers to several hundred micrometers. When the support and the porous material are provided together in the vacuum space, a vacuum pressure intermediate between the case where only the support is used and the case where only the porous material is used can be created and used.

[0059] FIG. 7 is a drawing showing various embodiments of the vacuum space portion. The present invention may be any one of the following examples or an example in which two or more are combined.

[0060] Referring to FIG. 7, the vacuum insulation of the present invention may include a vacuum space. The vacuum space (50) may include a first vacuum space that extends in a first direction (e.g., X-axis) and has a predetermined height. The vacuum space (50) may optionally include a second vacuum space (hereinafter referred to as a vacuum space extension) that differs from the first vacuum space in at least one of height and direction. The vacuum space extension may be provided by extending at least one of the first and second plates and the side plate. In this case, the heat conduction path along the plate may be lengthened to increase the heat transfer resistance. The vacuum space expansion portion extended by the second plate can reinforce the thermal insulation performance of the front portion of the vacuum insulation body, the vacuum space expansion portion extended by the first plate can reinforce the thermal insulation performance of the rear portion of the vacuum insulation body, and the vacuum space expansion portion extended by the side plate can reinforce the thermal insulation performance of the side portion of the vacuum insulation body. Referring to FIG. 7a, the second plate can be extended to provide the vacuum space expansion portion (51). The second plate may include a second portion (202) extending from a first portion (201) that forms the vacuum space portion (50) and the vacuum space expansion portion (51). The second portion (202) of the second plate may branch the heat conduction path along the second plate to increase the heat transfer resistance. Referring to FIG. 7b, the side plate can be extended to provide the vacuum space expansion portion. The above side plate may include a second portion (152) extending from a first portion (151) forming the vacuum space portion (50) and the vacuum space expansion portion (51). The second portion of the side plate may branch a heat conduction path along the side plate, thereby improving thermal insulation performance.The first and second parts (151)(152) of the above side plate may branch the heat conduction path to increase the heat transfer resistance. Referring to FIG. 7c, the first plate may extend to provide the vacuum space expansion section. The first plate may include a second part (102) extending from the first part (101) forming the vacuum space section (50) and the vacuum space expansion section (51). The second part of the first plate may branch the heat conduction path along the second plate to increase the heat transfer resistance. Referring to FIG. 7d, the vacuum space expansion section (51) may include an X-direction extension section (51a) and a Y-direction extension section (51b) of the vacuum space section. The vacuum space expansion section (51) may extend in multiple directions of the vacuum space section (50). Through this, thermal insulation performance in multiple directions can be reinforced, and heat transfer resistance can be increased by extending the heat conduction path in multiple directions. The vacuum space expansion section extending in multiple directions can further improve thermal insulation performance by branching the heat conduction path. Referring to FIG. 7e, the side plate can provide the vacuum space expansion section extending in multiple directions. The vacuum space expansion section can reinforce the thermal insulation performance of the side portion of the vacuum insulation body. Referring to FIG. 7f, the first plate can provide the vacuum space expansion section extending in multiple directions. The vacuum space expansion section can reinforce the thermal insulation performance of the side portion of the vacuum insulation body.

[0061] FIG. 8 is a drawing illustrating an additional insulating body. The present invention may be any one of the following examples or an example in which two or more are combined. Referring to FIG. 8, the vacuum insulating body of the present invention may optionally include an additional insulating body (90). The additional insulating body may be an object having a lower vacuum level than the vacuum insulating body or not containing a vacuum-state portion inside it. The vacuum insulating body and the additional vacuum insulating body may be directly connected or connected through a medium. In this case, the medium may be an object having a lower vacuum level than at least one of the vacuum insulating body and the additional insulating body or not containing a vacuum-state portion inside it. When the vacuum insulating body includes a high portion of the vacuum insulating body and a low portion of the vacuum insulating body, the additional insulating body may be placed in the low portion of the vacuum insulating body. The additional insulating body may include a portion connected to at least some of the first and second plates and the side plate. The additional insulation may be supported, coupled, or sealed to the plate. The degree of sealing between the additional insulation and the plate may be lower than the degree of sealing between the plates. The additional insulation may include a cured insulation that hardens after injection (e.g., PU foam), a pre-molded resin, a peripheral insulation, and a side panel, etc. At least a portion of the plate may be provided to be located inside the additional insulation. The additional insulation may include a void space. The plate may be provided to be accommodated in the void space. At least a portion of the plate may be provided to cover at least a portion of the additional insulation. The additional insulation may include a member covering its outer surface. The member may be at least a portion of the plate. The additional insulation may be a medium for connecting, supporting, coupling, or sealing the vacuum insulation and a component. The additional insulation may be a medium for connecting, supporting, coupling, or sealing the vacuum insulation and another vacuum insulation. The additional insulation may include a portion connected to a component fastening portion provided on at least a portion of the plate. The additional insulation may include a portion connected to a cover that covers the additional insulation. The cover may be positioned between the first plate and the first space, between the second plate and the second space, or between the side plate and a space other than the vacuum space (50). For example, the cover may include a portion on which a component is mounted. For another example, the cover may include a portion forming the exterior of the additional insulation. Referring to FIGS. 8a–f, the additional insulation may include a peripheral insulation.The peripheral insulation may be disposed in at least a portion of the periphery of the vacuum insulation, the periphery of the first plate, the periphery of the second plate, and the side plate. The peripheral insulation disposed in the periphery of the first plate or the second plate may extend to the portion where the side plate is formed or extend to the outside of the side plate. The peripheral insulation disposed in the side plate may extend to the portion where the first plate or the second plate is formed, or extend to the outside of the first plate or the second plate. Referring to FIGS. 8g to 8h, the additional insulation may include a central insulation. The central insulation may be disposed in at least a portion of the central part of the vacuum insulation, the central part of the first plate, and the central part of the second plate.

[0062] Referring to FIG. 8a, the peripheral insulation (92) may be placed around the periphery of the first plate. The peripheral insulation may come into contact with the first plate. The peripheral insulation may be separated from the first plate or extended further (indicated by a dotted line). The peripheral insulation may improve the thermal insulation performance around the periphery of the first plate. Referring to FIG. 8b, the peripheral insulation may be placed around the periphery of the second plate. The peripheral insulation may come into contact with the second plate. The peripheral insulation may be separated from the second plate or extended further (indicated by a dotted line). The peripheral insulation may improve the thermal insulation performance around the periphery of the second plate. Referring to FIG. 8c, the peripheral insulation may be placed around the periphery of the side plate. The peripheral insulation may come into contact with the side plate. The peripheral insulation may be separated from the side plate or extended further. The above peripheral insulation can improve the thermal insulation performance of the periphery of the side plate. Referring to FIG. 8d, the peripheral insulation (92) can be placed around the periphery of the first plate. The peripheral insulation can be placed around the periphery of the first plate forming the vacuum space expansion (51). The peripheral insulation can be in contact with the first plate forming the vacuum space expansion. The peripheral insulation can be separated from or further extended from the first plate forming the vacuum space expansion. The peripheral insulation can improve the thermal insulation performance of the periphery of the first plate forming the vacuum space expansion. Referring to FIG. 8e and FIG. 8f, the peripheral insulation can be placed around the periphery of the second plate or the side plate where the vacuum space expansion is located. The same description as FIG. 8d can be applied. Referring to FIG. 8g, the central insulation (91) can be placed around the central part of the first plate.The central insulating member can improve the thermal insulation performance of the central portion of the first plate. Referring to FIG. 8h, the central insulating member can be placed in the central portion of the second plate. The central insulating member can improve the thermal insulation performance of the central portion of the second plate.

[0063] Referring to FIG. 9, the vacuum insulation of the present invention includes a heat transfer path formed between plates with different temperatures, and optionally, the heat transfer path may include a portion passing through a heat transfer resistor. Examples of heat transfer resistors as the heat transfer path are as follows. The present invention may be any one of the following examples or an example in which two or more are combined.

[0064] Referring to FIG. 9a, the heat transfer resistor (60) may be provided on the first plate (10). The heat transfer resistor may be at least one of a radiation resistance sheet, a porous material, a filler, and a conductive resistance sheet. More preferably, the heat transfer resistor may be the conductive resistance sheet. A shield for thermal insulation or a member for reinforcing strength may be provided on the outer surface of the heat transfer resistor. The heat transfer resistor may be installed on two opposing peripheries of the vacuum space (50). The heat transfer resistor may be installed to be connected to two opposing edges of the vacuum space. Referring to FIG. 9b, the heat transfer resistor may be provided on the side plate. Referring to FIG. 9c, the heat transfer resistor may be provided on the second plate. In FIG. 9b and 9c, the relationship between the plate and the heat transfer resistor is the same as in FIG. 9a. Referring to FIG. 9d, the heat transfer resistor may be provided integrally with the first plate. In this case, the heat transfer resistor may be provided as the first plate or as a part of the first plate. Referring to FIG. 9e, the heat transfer resistor may be provided integrally with the side plate. In this case, the heat transfer resistor may be provided as the side plate or as a part of the first plate. Referring to FIG. 9f, the heat transfer resistor may be provided integrally with the second plate. In this case, the heat transfer resistor may be provided as the second plate or as a part of the second plate.

[0065] FIG. 10 is a diagram illustrating a heat transfer path between first and second plates with different temperatures. Examples of the heat transfer path are as follows. The present invention may be any one of the examples below or an example in which two or more are combined.

[0066] The heat transfer path may pass through an extended portion in at least a part of the first portion (101) of the first plate, the first portion (201) of the second plate, and the first portion (151) of the side plate. The first portion may include a portion forming the vacuum space. The extended portion (102, 152, 202) may include a portion extending away from the first portion. The extended portion may include a portion extending toward the side portion of the vacuum insulation body, the side portion of the plate with the higher temperature among the first and second plates, or the side portion of the vacuum space (50). The extended portion may include a portion extending away from the front portion of the vacuum insulation body, the front portion of the plate with the higher temperature among the first and second plates, or the front portion of the vacuum space (50). By doing so, the formation of dew on the front portion can be reduced. The vacuum insulation body or the vacuum space (50) may include first and second surfaces with different temperatures. The first surface may have a lower temperature than the second surface. For example, the first surface may be the first plate and the second surface may be the second plate. The extended portion may include a portion that extends away from the second surface or extends toward the first surface. The extended portion may include a portion that contacts the second surface or a portion that extends while in contact. The extended portion may include a portion that extends while spaced apart from the second surface. The extended portion may include a portion that has a heat transfer resistance greater than at least a part of the plate or a heat transfer resistance greater than the first surface. The extended portion may include a plurality of portions that extend in different directions.For example, the extended portion may include a second portion (202) of the second plate and a third portion (203) of the second plate. A third portion may also be provided on the first plate or the side plate. By doing so, the heat transfer path can be lengthened to increase the heat transfer resistance. The aforementioned heat transfer resistance body may be disposed in the extended portion. An additional insulating body may be disposed on the outer side of the extended portion. By doing so, the extended portion may reduce the formation of dew on the second surface. Referring to FIG. 10a, the second plate may include the extended portion extending to the periphery of the second plate. Here, the extended portion may further include extending to the rear. Referring to FIG. 10b, the side plate may include the extended portion extending to the periphery of the side plate. Here, the extended portion may be provided with a length shorter than or equal to that of the extended portion of the second plate. Here, the extended portion may further include a portion extending rearward. Referring to FIG. 10c, the first plate may include the extended portion extending to the periphery of the first plate. Here, the extended portion may be extended to a length shorter than or equal to the extended portion of the second plate. Here, the extended portion may further include a portion extending rearward.

[0067] FIG. 11 is a diagram illustrating a branch on a heat transfer path between first and second plates with different temperatures. Examples of said branch are as follows. The present invention may be any one of the following examples or an example in which two or more are combined.

[0068] Optionally, the heat transfer path may pass through a branched portion (205, 153, 104) in at least some of the first plate, the second plate, and the side plate. Here, the branched heat transfer path refers to a heat transfer path that flows separately in a different direction from the heat transfer path flowing along the plate. The branched portion may be formed in a direction away from the vacuum space (50). The branched portion may be formed in a direction toward the interior of the vacuum space (50). Since the branched portion can perform the same function as the extended portion described in FIG. 10, a description of the same portion is omitted. Referring to FIG. 11a, the second plate may include the branched portion (205). A plurality of the branched portions may be provided spaced apart from each other. The branched portion may include a third portion (203) of the second plate. Referring to FIG. 11b, the side plate may include the branched portion (153). The branched portion (153) may branch off from the second portion (152) of the side plate. At least two branched portions (153) may be provided. The second portion (152) of the side plate may be provided with at least two branched portions (153) spaced apart from each other. Referring to FIG. 11c, the first plate may include the branched portion (104). The branched portion may extend further from the second portion (102) of the first plate. The branched portion may extend toward the periphery. The branched portion (104) may be bent to extend further. In FIG. 11a, b, and c, the direction in which the branched portion extends may be the same as at least one of the extension directions of the extended portion described in FIG. 10.

[0069] Figure 12 is a diagram illustrating the manufacturing process of a vacuum insulation body.

[0070] Optionally, the vacuum insulation may be manufactured by a vacuum insulation component preparation step in which the first plate and the second plate are prepared in advance. Optionally, the vacuum insulation may be manufactured by a vacuum insulation component assembly step in which the first plate and the second plate are assembled. Optionally, the vacuum insulation may be manufactured by a vacuum insulation vacuum exhaust step in which gas in the space formed between the first plate and the second plate is discharged. Optionally, after the vacuum insulation component preparation step is performed, the vacuum insulation component assembly step or the vacuum insulation vacuum exhaust step may be performed. Optionally, after the vacuum insulation component assembly step is performed, the vacuum insulation vacuum exhaust step may be performed. Optionally, the vacuum insulation may be manufactured by a vacuum insulation component sealing step (S3) in which the space between the first plate and the second plate is sealed. The above vacuum insulation component sealing step may be performed prior to the vacuum insulation vacuum evacuation step (S4). The vacuum insulation may be manufactured into an object with a specific purpose by a device assembly step (S5) in which the vacuum insulation is combined with a component constituting a device. The above device assembly step may be performed after the vacuum insulation vacuum evacuation step. Here, the component constituting the device refers to a component constituting the device together with the vacuum insulation.

[0071] The vacuum insulation component preparation step (S1) is a step in which components constituting the vacuum insulation are prepared or manufactured. Examples of components constituting the vacuum insulation may include various parts such as plates, supports, heat transfer resistors, and tubes. The vacuum insulation component assembly step (S2) is a step in which the prepared components are assembled. The vacuum insulation component assembly step may include a step in which at least some of the supports and heat transfer resistors are placed on at least a portion of the plates. For example, the vacuum insulation component assembly step may include a step in which at least some of the supports and heat transfer resistors are placed between the first plate and the second plate. Optionally, the vacuum insulation component assembly step may include a step in which a penetration component is placed on at least a portion of the plates. For example, the vacuum insulation component assembly step may include a step in which a penetration component or a surface component is placed between the first and second plates. After the through-part is placed between the first plate and the second plate, the through-part may be connected to or sealed at the through-part fastening part.

[0072] Examples of the vacuum evacuation step of the vacuum insulation body are as follows. The present invention may be any one of the examples below or an example in which two or more are combined. The vacuum evacuation step of the vacuum insulation body may include at least one of the steps of introducing the vacuum insulation body into the exhaust passage, activating the getter, checking for vacuum leakage, and closing the exhaust port. The step of forming the component fastening part may be performed in at least one of the steps of preparing the vacuum insulation body component, assembling the vacuum insulation body component, and assembling the device. Before the vacuum evacuation step of the vacuum insulation body is performed, a step of cleaning the component constituting the vacuum insulation body may be performed. Optionally, the cleaning step may include a step of applying ultrasound to the component constituting the vacuum insulation body, or a step of providing ethanol or a substance containing ethanol to the surface of the component constituting the vacuum insulation body. The ultrasound may have an intensity between 10 kHz and 50 kHz. The ethanol content of the substance may be 50% or more. For example, the ethanol content of the above material may be 50% to 90% or less. As another example, the ethanol content of the above material may be 60% to 80% or less. As yet another example, the ethanol content of the above material may be 65% to 75% or less. Optionally, after the washing step is performed, a step of drying the components constituting the vacuum insulation may be performed. Optionally, after the washing step is performed, a step of heating the components constituting the vacuum insulation may be performed.

[0073] As an example, examples of the process with respect to the plate are as follows. It may be any one of the following examples of the present invention or an example combining two or more of them. The vacuum insulation component preparation step may include a step of manufacturing the plate. The step of manufacturing the plate may be performed before the vacuum insulation vacuum evacuation step is performed. Optionally, the plate may be manufactured by sheet metal. For example, a thin and wide plate may be manufactured using plastic deformation. Optionally, the manufacturing step may include a step of forming the plate. The forming step may be applied to forming the side plate, or the forming step may be applied in the process of integrally manufacturing the side plate with at least a portion of the first plate and the second plate. For example, the forming may include drawing. The forming step may include a step of partially seating the plate on a support. The forming step may include a step of partially applying force to the plate. The above forming step may include a step in which a part of the plate is placed on a support and a force is applied to another part of the plate. The above forming step may include a step in which the plate is deformed. The above deformation step may include a step in which at least one curved portion is formed on the plate. The above deformation step may include a step in which the radius of curvature of the plate is changed, or the above deformation step may include a step in which the thickness of the plate is changed. As a first example, the thickness change step may include a step in which the thickness of a part of the plate is increased, and the part may include a portion extending in the longitudinal direction of the internal space (a first straight portion). The part may be provided near the portion where the plate is placed on the support during the step in which the plate is formed.As a second example, the thickness change step includes a step in which the thickness of a portion of the plate is reduced, and the portion may include a portion extending in the longitudinal direction of the internal space (second straight portion). The portion may be provided near the portion where force is applied to the plate during the step of forming the plate. As a third example, the thickness change step includes a step in which the thickness of a portion of the plate is reduced, and the portion may include a portion extending in the height direction of the internal space (second straight portion). The portion may be connected to the portion extending in the longitudinal direction of the internal space from the plate. As a fourth example, the thickness change step includes a step in which the thickness of a portion of the plate is increased, and the portion may include a curved portion provided between the portion of the side plate extending in the longitudinal direction of the internal space and the portion extending in the height direction of the internal space (first curved portion). The curved portion may be provided near the portion where the plate is seated on a support during the step of forming the plate. As a fifth example, the thickness change step includes a step in which the thickness of a portion of the plate is reduced, and the portion may include a curved portion provided between the portion of the side plate extending in the longitudinal direction of the internal space and the portion extending in the height direction of the internal space (a second curved portion). The curved portion may be provided near the portion where force is applied to the plate during the step of forming the plate. The deformation step may be any one of the aforementioned examples or an example in which at least two of the aforementioned examples are combined.

[0074] With respect to the above plate, the process may optionally include a step in which the plate is washed. An example of a process sequence related to the step in which the plate is washed is as follows. The present invention may be any one of the following examples or an example in which two or more are combined. Before the vacuum evacuation step of the vacuum insulation body is performed, the step of washing the plate may be performed. After the step of manufacturing the plate is performed, at least one of the step of forming the plate and the step of washing the plate may be performed. After the step of forming the plate is performed, the step of washing the plate may be performed. Before the step of forming the plate is performed, the step of washing the plate may be performed. After the step of manufacturing the plate is performed, at least one of the step of providing the component fastening part to a part of the plate and the step of washing the plate may be performed. After the step of providing the component fastening part to a part of the plate is performed, the step of washing the plate may be performed.

[0075] With respect to the above plate, the process may optionally include a step of providing a component fastening portion to the plate. An example of a process sequence related to the step of providing a component fastening portion to the plate is as follows. The present invention may be any one of the following examples or an example in which two or more are combined. Before the vacuum evacuation step of the vacuum insulation body is performed, the step of providing the component fastening portion to a part of the plate may be performed. For example, the step of providing the component fastening portion may include a step of manufacturing a tube provided to the component fastening portion. The tube may be connected to a part of the plate. The tube may be placed in an empty space provided in the plate or in an empty space provided between the plates. As another example, the step of providing the component fastening portion may include a step of providing a through hole in a part of the plate. As yet another example, the step of providing the component fastening portion may include a step of providing a curved portion to at least one of the plate and the tube.

[0076] With respect to the above plate, the process may optionally include a process for a vacuum insulation component sealing step related to the above plate. An example of a process sequence regarding the vacuum insulation component sealing step related to the above plate is as follows. The present invention may be any one of the following examples or an example in which two or more are combined. After the step of providing a through hole in a part of the above plate is performed, at least one of the step of providing a curved portion in at least a part of the above plate and the above tube, and the step of providing a seal between the above plate and the above tube may be performed. After the step of providing a curved portion in at least one of the above plate and the above tube is performed, the step of sealing between the above plate and the above tube may be performed. The step of providing a through hole in a part of the above plate and the step of providing a curved portion in at least a part of the above plate and the above tube may be performed simultaneously. The step of providing a through hole in a part of the above plate and the step of providing a seal between the above plate and the above tube may be performed simultaneously. After the step of providing a curved portion in the above tube is performed, the step of providing a through hole in a part of the above plate may be performed. Before the vacuum insulation vacuum evacuation step is performed, a part of the tube may be provided to or sealed on the plate, and after the vacuum insulation vacuum evacuation step is performed, another part of the tube may be sealed.

[0077] The contents described in FIGS. 1 to 12 may be applied to all or optionally to the embodiments presented in the following drawings.

[0078] FIG. 13 is a reference diagram illustrating the provisional assembly of the first outer case and the second outer case.

[0079] Referring to FIG. 13, the outer case may include the first and second outer cases. The first outer case (261) may be pre-assembled to the second outer case (262). After the pre-assembly of the first outer case (261) and the second outer case (262), the pre-assembled state may be maintained during additional processes. After the pre-assembly, the first outer case (261) and the second outer case (262) may be firmly fastened together. The first outer case (261) and the second outer case (262) may be fastened together by a foam member. It is preferable that the first outer case (261) and the second outer case (262) be placed at a relative and accurate position in the design.

[0080] A cushioning pad (263) may be placed at the branching portion of the first outer case (261) and the second outer case (262). A cushioning pad (263) may be placed at the edge of the overlapping area where the first outer case (261) and the second outer case (262) overlap. The cushioning pad (263) can prevent the penetration of foaming liquid through the contact edge of the first outer case (261) and the second outer case (262). The cushioning pad (263) may include an elastically returning sponge material. The cushioning pad (263) may be placed on the second portion (202) of the second plate. The cushioning pad (263) may be placed on the second outer case (262). The cushioning pad (263) can guide the placement position of the first outer case (261) on the second outer case (262). The cushioning pad (263) can be placed at the seating position of the first outer case (261). The operator can identify the position of the first outer case (261) using the cushioning pad (263).

[0081] An adhesive object may be placed on the contact surface between the first outer case (261) and the second outer case (262). The adhesive object may pre-assemble the first outer case (261) and the second outer case (262). The adhesive object may fix the first outer case (261) and the second outer case (262) in a triaxial direction. An adhesive tape may be used as the adhesive object. The adhesive object may be placed on the entire surface where the first outer case (261) and the second outer case (262) come into contact. The adhesive object may not be placed on the entire surface of the first outer case (261) and the second outer case (262). The foam member may completely fasten the first outer case (261) and the second outer case (262). The adhesive member may be a temporary auxiliary fastening member for pre-assembly. The adhesive member may include a single linear member passing through the center of the contact surface between the first outer case (261) and the second outer case (262). The adhesive member may include at least two linear members extending in a first direction passing through the periphery of the contact surface between the first outer case (261) and the second outer case (262). The adhesive member may include at least two linear members extending in a second direction passing through the periphery of the contact surface between the first outer case (261) and the second outer case (262).

[0082] Figure 14 is a diagram illustrating a position marker.

[0083] Referring to FIG. 14, the cushioning pad (263) may be a position marker. The position marker may guide the relative placement positions of the outer cases (261) (262) during operation. The position marker may guide the seating of the first outer case (261). The position marker may be placed on the inner surface of the second outer case (262) before the first outer case (261) is placed. The position marker may be placed on the surface where the first outer case (261) faces the second outer case (262). The position marker may be an object of a different color, shade, or texture from the second outer case (262). The position marker may be paint. The position marker may be a protruding object protruding from the second outer case (262). The above position marker may be placed at the branching portion of the first outer case (261) and the second outer case (262). At least a portion of the above position marker may be placed on the outside of the second bend portion.

[0084] Referring again to FIG. 13, the pad (263) may be provided between the plate and the additional insulation. The plate may comprise a plurality of layers, and the pad may be provided between the plurality of layers. The pad may comprise at least one of an elastic material, a cushioning material, and a porous material (2632). For example, the pad may comprise a sponge. The thickness of the pad may reach 2 millimeters. At least one of an adhesive (2631) and a smooth resin material (2633) may be provided between the pad and the plate. The adhesive (2631) and the smooth resin material (2633) may be provided between the pad and the additional insulation. Preferably, an adhesive may be provided between the pad and the plate, or a smooth resin material may be provided between the pad and the additional insulation.

[0085] The first layer improves the flowability of the foaming liquid, allowing the foaming liquid to spread widely. The elastic material can absorb differences in thickness between parts of the foaming liquid. The elastic member can prevent the foaming member from pushing the second outer case (262) differently in parts. The cushioning pad (263) can prevent irregularities in the second outer case (262). The roughness of the second outer case (262) can be reduced by the cushioning pad (263).

[0086] The above buffer pad (263) may have its own area as a location marker. The location marker may be provided separately from the above buffer pad (263). In this case, the location marker may be paint.

[0087] FIG. 15 is a drawing showing the contact cross-section between the outer cases.

[0088] Referring to FIG. 15, the adhesive material (2634) may be placed on the contact surface between the first outer case (261) and the second outer case (262). As previously seen, the adhesive material may be placed partially. Since the foaming liquid does not flow into the contact surface between the first outer case (261) and the second outer case (262), the first layer may not be provided. Since the foaming liquid does not flow into the contact surface between the first outer case (261) and the second outer case (262), the second layer may not be provided. The cushioning pad (263) may have an adhesive material that is the same as or different from the third layer.

[0089] Another embodiment of pre-assembling the first outer case (261) and the first vacuum insulation body (11) is described.

[0090] FIG. 16 is a drawing illustrating the biaxial assembly of the first outer case and the first vacuum insulation body.

[0091] Referring to FIG. 16, the second part (152) of the side plate may extend to be adjacent to the third part (203) of the second plate. The first outer case (261) and the first inner case (161) may be placed together on the second part (152) of the side plate. The second part (152) of the side plate and the second plate (20) may support each other. The second part (152) of the side plate and the second plate (20) may not be in direct contact with each other. The second part (152) of the side plate and the second plate (20) may be in indirect contact with each other. The second part (152) of the side plate and the second plate (20) may be insulated from each other. The second part (152) of the side plate and the second plate (20) can be mechanically connected to each other. The second part (152) of the side plate and the second plate (20) may not be constrained to each other in the height direction (Y-axis) of the vacuum space (50). The second part (152) of the side plate and the second plate (20) may be constrained to each other in the length direction (X-axis) of the vacuum space (50). The second part (152) of the side plate and the second plate (20) may be constrained to each other in the depth direction (Z-axis) of the vacuum space (50).

[0092] The first straight section (221) of the first outer case (261) may be placed on the second part (152) of the side plate. The first inner case (161) may be placed on the second part (152) of the side plate.

[0093] After the second part (152) of the side plate and the second plate (20) are constrained in two axial directions, they can be further constrained. The second inner case (162) (see FIG. 20) can constrain the second part (152) of the side plate and the second plate (20) to each other in the height direction (Y-axis) of the vacuum space (50). The second inner case (162) can be combined with the second outer case (262). Foaming liquid can be injected into the space formed by the second inner case (162) and the second outer case (262).

[0094] FIG. 17 is another embodiment, which is otherwise identical to FIG. 16, and shows that the second outer case (262) is adjacent to the first outer case (261). The second portion (152) of the side plate may include a first portion where the first outer case (261) and the first inner case (161) are placed together, and a second portion where only the first outer case (261) is placed. The second portion may be placed around the second portion (152) of the side plate. According to the present embodiment, heat leakage through the second portion (152) of the side plate can be reduced. According to the present embodiment, sufficient bonding strength can be obtained between the first vacuum insulator (11) and the second outer case (262).

[0095] Another embodiment of pre-assembling the second outer case (262) and the first vacuum insulation body (11) is described.

[0096] FIGS. 18 and 19 are drawings illustrating a support block that supports the gap between the second outer case and the first vacuum insulation body, where FIG. 18 is a drawing showing a cross-section of the vacuum insulation body and FIG. 19 is a drawing showing a plan view of the vacuum insulation body.

[0097] Referring to FIGS. 18 and 19, the support block (264) can guide the height at which the first outer case (261) is placed in the height direction of the vacuum space (50). At least two support blocks (264) can guide the position of the first outer case (261) together. Among the support blocks (264), the support blocks (264) placed on the upper and lower sides of the second outer case (262) can guide the depth at which the second outer case (262) is placed in the depth direction of the vacuum space (50). Among the support blocks (264), the support blocks (264) placed on the left and right sides of the second outer case (262) can guide the position at which the second outer case (262) is placed in the length direction of the vacuum space (50).

[0098] A plurality of the support blocks (264) may be placed around the periphery of the support blocks (264). At least one support block (264) may be placed on each side of the second outer case (262). At least two support blocks (264) may be placed on each side of the second outer case (262). The at least two support blocks (264) placed on one side may be placed spaced apart from each other. An adhesive material may be placed on the contact surface between the support blocks (264) and the second outer case (262). The adhesive material may be double-sided tape.

[0099] The above double-sided tape can pre-assemble the support block (264) and the second outer case (262). The support block (264) can guide the seating position of the first vacuum insulation body (11). The second inner case (162) can be fastened to the second outer case (262). The second inner case (162) can fix the position of the first vacuum insulation body (11) in the height direction of the vacuum state. The support block (264) can guide the height of the first vacuum insulation body (11) in the height direction of the vacuum state. The support block (264), the second outer case (262), and the first vacuum insulation body (11) can be completely fastened by the foam member.

[0100] FIG. 20 is a cross-sectional view of the lower portion of the vacuum insulation body, and FIG. 21 is a cross-sectional view of the upper portion of the vacuum insulation body. The vacuum insulation body may refer to a vacuum insulation body in which all members, such as the additional insulation body, are fastened.

[0101] Referring to FIGS. 20 and 21, the support block (264) may come into contact with the second outer case (262). The support block (264) may guide the height of the first vacuum insulation body (11). The second inner case (162) may press the first vacuum insulation body (11) to fix its height. The lower cover (113) may block the foaming space at the bottom of the vacuum insulation body. The upper cover (112) may block the foaming space at the top of the vacuum insulation body. The foaming member may fill the empty area after foaming to become an additional insulation body (90).

[0102] This embodiment describes another method for implementing the foamed insulation material.

[0103] The above support block (264) can be foamed after being triaxially fixed to the second outer case (262). This can contribute to door commonality.

[0104] After the first vacuum insulation body (11) is fixed to the support block (264), the assembly module can be mounted on the second outer case (262). Subsequently, the second inner case (162) and the second outer case (262) can be connected. Afterward, additional insulation can be performed by injecting foaming liquid into the surrounding area.

[0105] The support block (264) can be placed on the second outer case (262) to fix one axis of the first vacuum insulation body (11). Afterwards, the second inner case (162) and the second outer case (262) can be connected. Afterwards, additional insulation can be performed by injecting foaming liquid into the surrounding area. Industrial applicability

[0106] According to the present invention, a vacuum insulation material applicable to real life can be provided.

Claims

Claim 1 A vacuum insulator comprising: a first plate; a second plate; a vacuum space provided between the first plate and the second plate; and a supporter maintaining the vacuum space, wherein the second plate includes a first outer case adjacent to the vacuum space and a second outer case farther from the vacuum space than the first outer case, and a cushioning pad placed at the branching portion between the first outer case and the second outer case so as to protrude from the second outer case. Claim 2 In claim 1, the cushioning pad is a vacuum insulating body comprising an elastic material. Claim 3 A vacuum insulating body according to claim 1, comprising an adhesive object intervening on the contact surface between the first outer case and the second outer case. Claim 4 In claim 3, the adhesive body is a vacuum insulator that fixes the first outer case and the second outer case in a triaxial direction. Claim 5 A vacuum insulation body according to claim 1, comprising a position marker placed on the surface of the first outer case facing the second outer case. Claim 6 In claim 5, the position marker is a vacuum insulator that is an object of a different color, shade, or texture from the second outer case. Claim 7 In claim 5, the above-mentioned position marker is a vacuum insulator that is a paint. Claim 8 In claim 5, the position marker is a vacuum insulating body that is a protruding object protruding from the second outer case. Claim 9 A vacuum insulator comprising: a first plate; a second plate; a vacuum space provided between the first plate and the second plate; a side plate having a portion extending in one direction of the vacuum space; and a supporter maintaining the vacuum space, wherein the side plate includes a first portion of the side plate providing the vacuum space; and a second portion of the side plate bent from the first portion of the side plate, and the second plate includes a first outer case adjacent to the vacuum space and a second outer case farther from the vacuum space than the first outer case, and a marker, which is a protruding object protruding from the second outer case, is disposed thereon. Claim 10 In claim 9, the second part of the side plate and the second plate are vacuum insulators that support each other. Claim 11 In claim 9, the second portion of the side plate extends in a direction different from one direction of the vacuum space portion and is adjacent to the second plate, forming a vacuum insulation body. Claim 12 In claim 9, a vacuum insulator in which the second part of the side plate and the second plate do not come into contact. Claim 13 In claim 9, a vacuum insulation body on which the first outer case is placed in the second part of the side plate. Claim 14 In claim 9, the first plate comprises a first inner case adjacent to the vacuum space and a second inner case further from the vacuum space than the first inner case, and the first inner case is placed on a second part of the side plate, forming a vacuum insulating body. Claim 15 A vacuum insulation body comprising: a first plate; a second plate; a vacuum space provided between the first plate and the second plate; and a supporter that maintains the vacuum space, wherein the second plate includes a first outer case adjacent to the vacuum space and a second outer case farther from the vacuum space than the first outer case, and a support block protruding from the second outer case and guiding the height at which the first outer case is placed in the height direction of the vacuum space. Claim 16 In claim 15, the support blocks are vacuum insulation bodies in which at least two blocks together guide the position of the first outer case corresponding to any one side of the first outer case. Claim 17 In claim 15, among the support blocks, the support blocks placed on the upper and lower sides of the second outer case are vacuum insulation bodies that guide the depth at which the second outer case is placed in the depth direction of the vacuum space. Claim 18 In claim 15, among the support blocks, the support blocks placed on the left and right sides of the second outer case are vacuum insulation bodies that guide the position where the second outer case is placed in the longitudinal direction of the vacuum space. Claim 19 In claim 15, the vacuum insulation body comprises a foamed insulation material provided in the periphery of the vacuum insulation body, and an upper cover and a lower cover that block the upper and lower foaming spaces of the foamed insulation material. Claim 20 In claim 15, the support block is a vacuum insulator placed on the second outer case. Claim 21 An apparatus comprising a vacuum insulation body according to any one of claims 1 to 20.

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