Vacuum adiabatic body

Abstract

The vacuum adiabatic body according to the present invention comprises: a first plate having a first temperature; a second plate having a second temperature different from the first temperature; and a sealing part sealing the first plate and the second plate to provide a vacuum space.

Description

vacuum insulator

[0001] The present invention relates to a vacuum insulator.

[0002] Insulating performance can be improved by constructing a vacuum-insulated wall. A device that forms at least a portion of its internal space into a vacuum and achieves an insulating effect can be called a vacuum insulator.

[0003] The applicant has developed a technology to obtain a vacuum insulator that can be used in various devices and home appliances, and has disclosed a vacuum insulator and refrigerator in Korean Patent Publication No. 1020200001396A. The vacuum insulator of the above-mentioned reference discloses that a heat exchanger is installed within a vacuum space.

[0004] The above-mentioned reference presents the self-configuration and support structure of a heat exchanger placed in a vacuum space. The above-mentioned reference does not disclose the specific installation structure of the heat exchanger or its relationship to other components. For example, it does not disclose the relationship between the heat exchanger and other components within the vacuum space, or the method of mounting the heat exchanger.

[0005] The present invention proposes an installation structure of a heat exchanger without loss of insulation effect.

[0006] In addition to the examples presented above, the present invention proposes specific solutions and solutions for solving them in [Means for solving the problem] and [Specific contents for carrying out the invention].

[0007] The vacuum insulator of the present invention may include a first plate having a first temperature; a second plate having a second temperature different from the first temperature; and a vacuum space provided between the first and second plates. The vacuum insulator may include a sealing portion that seals the first plate and the second plate so as to provide the vacuum space. A support that supports the vacuum space may be included.

[0008] Optionally, the support may be provided by vertically connecting a single type of unit. The unit may be provided with a support member at a predetermined interval. The upper unit may be connected to the lower unit in a symmetrical alignment without relative movement. The upper unit may be connected to the lower unit by moving in at least one direction among the x-axis in the extension direction of the vacuum space and the y-axis of the vacuum space by one time the interval, or 2n (n is a natural number), or (2n+1) (n is a natural number). The upper unit may be connected to the lower unit by moving in both the x-axis in the extension direction of the vacuum space and the y-axis of the vacuum space by one time the interval, or (2n+1) (n is a natural number). The upper unit may be connected to the lower unit by moving in either the x-axis in the extension direction of the vacuum space and the y-axis of the vacuum space by one time the interval, or (2n+1) (n is a natural number). The upper unit may be fastened to the lower unit by moving in one direction by one time the interval or (2n+1) (n is a natural number) along the x-axis in the extension direction of the vacuum space and the y-axis of the vacuum space. The upper unit may be fastened to the lower unit by moving in the x-axis in the extension direction of the vacuum space by (2n+1) (n is a natural number) times the interval and by moving in the y-axis of the vacuum space by 2n (n is a natural number) times the interval. The units may be fastened by crossing each other by 2n times the interval. Either one of the upper unit and the lower unit may have an empty area in which the other corresponding grid facing it is empty. The empty area may be one grid or two grids. The upper unit on the upper side and the lower unit on the lower side may be aligned symmetrically with each other. The upper unit on the upper side and the lower unit on the lower side may be fastened by crossing each other.At least one of the at least two upper units and the at least two lower units may be configured to be directly connected to each other. The upper unit on the upper side and the lower unit on the lower side may be fastened to intersect in at least one direction among the x-axis of the extension direction of the vacuum space and the y-axis of the vacuum space.

[0009] Optionally, at least a portion of the support may be provided by repeatedly fastening the same unit. The unit may be provided alternately with a first support and a fourth support fastened to the first support. The unit may have two axes in the extending direction of the vacuum space. The first Y-axis edge of the unit may be provided with a first support and a fourth support at each end. The second Y-axis edge of the unit may be provided with a fourth support and a first support at each end. The first X-axis edge of the unit may be provided with a first support and a fourth support at each end. The second X-axis edge of the unit may be provided with a fourth support and a first support at each end. The first Y-axis edge of the unit may be provided with a fourth support and a fourth support at each end. The second Y-axis edge of the unit body may be provided with a first support, and the first support may be provided at each end. The first X-axis edge of the unit body may be provided with a fourth support, and the first support may be provided at each end. The second X-axis edge of the unit body may be provided with a first support, and the fourth support may be provided at each end. The first Y-axis edge of the unit body may be provided with a fourth support, and the fourth support may be provided at each end. The second Y-axis edge of the unit body may be provided with a first support, and the first support may be provided at each end. The first X-axis edge of the unit body may be provided with a fourth support, and the fourth support may be provided at each end. The second X-axis edge of the unit body may be provided with a first support, and the first support may be provided at each end. The unit may be provided with a first support and a fourth support fastened to the first support. The unit may be provided with a first region where the first supports are gathered.The above unit may be provided with a first support and a fourth support fastened to the first support, and the unit may be provided with a second region where the fourth support gathers. A boundary region may be provided between the first region and the second region. The first support may be a bar. The fourth support may be a groove. The first support and the fourth support may extend in the thickness direction of the vacuum space. In the support, the unit may be aligned symmetrically vertically. In the support, the unit may be misaligned vertically. A second support and a third support fastened to the second support may be alternately provided on an edge of the unit. The second support and the third support may be provided on facing edges.

[0010] Optionally, the support may be connected to an upper unit and a lower unit, and a plurality of injection gates may be formed in the upper unit and the lower unit. At least one of the upper unit and the lower unit may include a region where the injection gates have a short spacing and a region where the injection gates have a long spacing. The upper unit and the lower unit may overlap. The upper unit and the lower unit may not overlap.

[0011] Optionally, the vacuum space portion may be supported and a support may be included to which a single type of unit is vertically connected. The unit may be provided with a first support and a fourth support having a structure into which the first support can be inserted at a predetermined interval. The first support and the fourth support may alternate along a first axis of the unit. The first support and the fourth support may be continuous along a second axis of the unit. The unit may be vertically connected to face each other. The same support may be placed at both ends of the first axis. Different supports may be placed at both ends of the first axis. A second support and a third support may be provided at the edge of the unit. Either one of the upper unit on the upper side and the lower unit on the lower side may have an empty area in which the other corresponding facing grid is empty. The empty area may be one grid or two grids. The upper unit on the upper side and the lower unit on the lower side may be non-aligned with each other. The upper unit on the upper side and the lower unit on the lower side may be aligned symmetrically with each other. At least two upper units and at least one of the at least two units may be configured to be directly connected to each other. The upper unit on the upper side and the lower unit on the lower side may be fastened to intersect in at least one direction of the x-axis of the extension direction of the vacuum space and the y-axis of the vacuum space.

[0012] Optionally, at least a portion of the support may be provided by repeatedly fastening the same unit. The same support may be continuous along one axis of the unit. The unit may be provided with a first support and a fourth support fastened to the first support alternately. It may have two axes in the extending direction of the vacuum space. The first Y-axis edge of the unit may be provided with the fourth support and an end of the first support, and the first support and the fourth support may be alternately provided. The second Y-axis edge of the unit may be provided with the first support and an end of the fourth support, and the first support and the fourth support may be alternately provided. The fourth support may be continuously provided at the first X-axis edge of the unit. The first support may be continuously provided at the second X-axis edge of the unit. The first Y-axis edge of the unit body may be provided as a fourth support body and an end of the fourth support body, and the first support body and the fourth support body may be provided alternately. The second Y-axis edge of the unit body may be provided as a fourth support body and an end of the fourth support body, and the first support body and the fourth support body may be provided alternately. The first support body may be continuously provided at the first X-axis edge of the unit body. The first support body may be continuously provided at the second X-axis edge of the unit body. Either the upper unit body on the upper side or the lower unit body on the lower side may be fastened by moving the first and second supports alternately with respect to the other by a pitch of (1+2n) (n is 0 or a natural number) along the first axis. One of the upper unit on the upper side and the lower unit on the lower side can be fastened to the other by moving n (where n is a natural number) pitches along the second axis without alternating the first and second supports. The support can provide a large empty area in which two or more grids are empty.

[0013] Optionally, the unit body may be provided with at least two supports, and may have a first region having a high density of a first support of the at least two units, and a second region having a high density of a second support of the at least two units. The densities of the injection gate of the first region and the injection gate of the second region may be different. A single boundary region may be included between the first region and the second region.

[0014] According to the present invention, a vacuum insulation body with high insulation efficiency can be proposed.

[0015] According to the present invention, a vacuum insulation body can be conveniently manufactured.

[0016] The effects of the present invention are disclosed in more detail in [Specific details for carrying out the invention].

[0017] Fig. 1 is a perspective view of a refrigerator according to an embodiment.

[0018] Figure 2 is a schematic drawing showing a vacuum insulation material used in the body and door of a refrigerator.

[0019] Figure 3 is a drawing showing an embodiment of a support that maintains a vacuum space.

[0020] Figure 4 is a drawing explaining an embodiment of a vacuum insulation body centered on a heat transfer resistor.

[0021] Figure 5 is a graph that observes the process of exhausting the inside of a vacuum insulator with respect to time and pressure when a support is used.

[0022] Figure 6 is a graph comparing vacuum pressure and gas conductivity.

[0023] Figure 7 is a drawing explaining a method for manufacturing a vacuum insulation body.

[0024] Figure 8 is an example of how a support and heat exchanger are installed.

[0025] Fig. 9 is a drawing showing an example of a unit of support and a fastening of the unit.

[0026] Fig. 10 is a drawing showing an example of a unit of support and a fastening of the unit.

[0027] Figures 11 to 21 are drawings showing the support of the embodiment.

[0028] Fig. 22 is a drawing showing a unit of support of an embodiment.

[0029] Figure 23 shows the support of the embodiment.

[0030] Figure 24 is an enlarged view of A in Figure 23.

[0031] Figure 25 is a drawing explaining the superposition of one-axis male-female alternating one-axis symmetrical units.

[0032] Fig. 26 is a fastening structure of an exemplary unit body.

[0033] Fig. 27(a) is another support of the example unit body.

[0034] Figure 27(b) is a cross-sectional view of 1-1' of Figure 27(a).

[0035] Figure 28 is a drawing of a unit and support of the embodiment.

[0036] Figure 29 is a plan view of a single-axis male-female group alternating unit.

[0037] Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, the spirit of the present invention is not limited to the embodiments presented below, and those skilled in the art who understand the spirit of the present invention will be able to easily propose other embodiments included within the scope of the same spirit by adding, modifying, deleting, or adding components or limitations regarding components, but this will also be considered to be included within the scope of the present invention.

[0038] The present invention may have numerous embodiments embodying its principles, and each embodiment may have any portion replaced with a corresponding portion or related portion of another embodiment. The present invention may be any one of the examples presented below, or a combination of two or more.

[0039] The present invention may be a vacuum insulator comprising a first plate; a second plate; and a vacuum space provided between the first and second plates. The vacuum insulator may include a sealing member for providing the vacuum space (vacuum space). The vacuum space may be a vacuum space provided in an internal space between the first plate and the second plate. The sealing member may seal the first plate and the second plate to provide the internal space provided in a vacuum state. The vacuum insulator may optionally include a side plate connecting the first plate and the second plate. In the present invention, the term “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 formed integrally or at least a portion may be sealed to each other. Optionally, the vacuum insulator may include a support for maintaining the vacuum space. The vacuum insulation material may optionally include a heat transfer resistor for reducing the amount of heat transfer between a first space provided near the first plate and a second space provided near the second plate, or for reducing the amount of heat transfer between the first plate and the second plate.

[0040] Optionally, the vacuum insulator may include a component fastening portion formed on at least a portion of the plate. Optionally, the vacuum insulator may include an additional insulator. The additional insulator may be provided to be connected to the vacuum insulator. The additional insulator may be an insulator having the same or different vacuum degree as the vacuum insulator. The additional insulator may be an insulator having a vacuum degree lower than or equal to the vacuum insulator or not including a vacuum portion therein. In this case, it may be advantageous to connect another object to the additional insulator.

[0041] 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 any one of the directions 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 set vacuum space.

[0042] In the present invention, the connection of object A to object B can be defined as that at least a portion of object A and at least a portion of object B are directly connected, or at least a portion of object A and at least a portion of object B are connected via a medium interposed between objects A and B. The medium can be provided to at least one of objects A and B. The connection can include that object A is connected to the medium, and the medium is connected to object B.

[0043] A portion of the above medium may include a portion connected to one of objects A and B. Another portion of the above medium may include a portion connected to the other of objects A and B. In a variation, the connection of object A to object B may include objects A and B being prepared as a single body in a shape connected in the manner described above. In the present invention, examples of the connection may be supporting, bonding, or sealing, which will be described later.

[0044] In the present invention, it can be defined that object A is supported by object B, meaning that object A is 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 bonding or sealing as described below. In the present invention, it can be defined that object A is coupled to object B, meaning that object A is restricted from moving in one or more of the X, Y, and Z axis directions by object B.

[0045] In the present invention, an embodiment of the above-described combination may be a sealing, which will be described later. In the present invention, the sealing of object A to object B may be defined as a state in which movement of fluid is not permitted at a portion where object A and object B are connected. In the present invention, at least one object, that is, at least a part of object A and object B, may be defined as including a part of object A, the entire object A, a part of object B, the entire object B, a part of object A and a part of object B, a part of object A and the entire object B, the entire object A and a part of object B, and the entire object A and the entire object B. In the present invention, the fact that plate A may be a wall defining space A may be defined as at least a part of plate A may be a wall forming at least a part of space A.

[0046] That is, at least a part of plate A may be a wall forming space A, or plate A may be a wall forming at least a part of space A. In the present invention, the central part of the object may be defined as a part located in the center of the third part when the object is divided into thirds based on the longitudinal direction of the object. The peripheral part of the object may be defined as a part located to the left or right of the central part among the third parts. The peripheral part of the object may include a surface in contact with the central part and a surface opposite thereto.

[0047] The opposite side can be defined as the border or edge of the object. Examples of the object may include vacuum insulators, plates, heat transfer resistors, supports, vacuum spaces, and various components introduced in the present invention. In the present invention, heat transfer resistance refers to 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 heat transfer resistance can be defined as the sum of conduction resistance, radiation resistance, and convection resistance.

[0048] The vacuum insulator of the present invention may include a heat transfer path formed between spaces having different temperatures, or a heat transfer path formed between plates having different temperatures. For example, the vacuum insulator of the present invention may include a heat transfer path through which cold is transferred from a plate having a low temperature to a plate having a high temperature. In the present invention, when an object includes a first portion extending in a first direction and a second portion extending in a second direction different from the first direction, the curved portion may be defined as a portion connecting the first portion and the second portion (including 90 degrees).

[0049] In the present invention, the vacuum insulation body may optionally include a component fastening portion. The component fastening portion may be defined as a portion provided on a plate to which components are connected. The components connected to the plate may be defined as a penetrating component arranged to penetrate at least a portion of the plate and a surface component arranged to connect to at least a portion of the surface of the plate.

[0050] At least one of a through-hole component and a surface component may be connected to the above-mentioned component connection part. The through-hole component may be a component that primarily forms a path through which a fluid (such as electricity, refrigerant, water, or air) passes. In the present invention, a fluid is defined as any type of flowing object. The fluid includes moving solids, liquids, gases, and electricity. For example, the component may be a component that forms a path through which a refrigerant for heat exchange passes, such as an SLHX or a refrigerant pipe.

[0051] The above component may be a wire that supplies electricity to the device. As another example, the component may be a component that forms a path through which air may pass, such as a cold air duct, a hot air duct, and an exhaust port. As another example, the component may be a path through which a fluid, such as coolant, hot water, ice, and defrost water may pass. The surface component may include at least one of perimeter insulation, side panels, injected foam, pre-prepared resin, hinges, latches, baskets, drawers, shelves, lights, sensors, evaporators, front decorations, and hot lines, heaters, exterior covers, and additional insulation.

[0052] As an example of the application of the above vacuum insulator, the present invention may include a device having the above vacuum insulator. An example of the device may be an appliance. Examples of the appliance may include home appliances such as refrigerators, cooking appliances, washing machines, dishwashers, and air conditioners. As an example of the application of the above vacuum insulator to the appliance, the vacuum insulator may form at least a portion of the body and door of the appliance.

[0053] As an example of the above door, the vacuum insulation may form at least a portion of a general door and a door-in-door that are in direct contact with the main body. Here, the door-in-door may refer to a small door placed within the general door. As another example of the application of the vacuum insulation, the present invention may include a wall having the vacuum insulation. An example of the wall may be a building wall including a window.

[0054] Hereinafter, the present invention will be described in detail with reference to the drawings. Each drawing accompanying the embodiments may differ from the actual product, be exaggerated, or be simplified, and detailed components may have their features simplified. The embodiments should not be interpreted as limited to the size, structure, and shape presented in the drawings. In the embodiments accompanying each drawing, if the descriptions do not conflict with each other, some components of the drawings of one embodiment may be applied to some components of the drawings of another embodiment, and some structures of one embodiment may be applied to some structures of another embodiment.

[0055] In the drawing description for the embodiment, the reference numerals of specific components forming the embodiment may be assigned the same reference numerals even across different drawings. Components having the same drawing number may perform the same function. For example, the first plate forming the vacuum insulation body is indicated by the drawing number 10, which has a portion corresponding to the first space throughout all embodiments. The first plate may have the same reference numeral for all embodiments and may have a portion corresponding to the first space, but the shape of the first plate may vary across each embodiment. Not only the first plate, but also the side plate, the second plate, and additional insulation, etc. may be understood in the same manner.

[0056] Fig. 1 is a perspective view of a refrigerator according to an embodiment, and Fig. 2 is a schematic drawing showing a vacuum insulation material used in the body and door of the refrigerator. Referring to Fig. 1, the refrigerator (1) may include a body (2) provided with a cavity (9) capable of storing items, and a door (3) provided to open and close the body (2).

[0057] The above door (3) is arranged to be rotatable or slidable to open and close the cavity (9). The cavity (9) can provide at least one of a refrigerator compartment and a freezer compartment.

[0058] A cold source for supplying cold air to the cavity may be provided. For example, the cold source may be an evaporator (7) that evaporates a refrigerant to remove heat. The evaporator (7) may be connected to a compressor (4) that compresses the evaporated refrigerant in the cold source. The evaporator (7) may be connected to a condenser (5) that condenses the compressed refrigerant in the cold source. The evaporator (7) may be connected to an expander (6) that expands the condensed refrigerant in the cold source.

[0059] A fan corresponding to the above evaporator and the condenser may be provided to promote heat exchange. As another example, the cold source may be a heat-absorbing surface of a thermoelectric element. A heat sink may be connected to the heat-absorbing surface of the thermoelectric element. A heat sink may be connected to the heat-radiating surface of the thermoelectric element. Fans corresponding to the heat-absorbing surface and the heat-generating surface may be provided to promote heat exchange.

[0060] Referring to FIG. 2, the plates (10, 15, 20) may be walls defining the vacuum space. The plates may be walls dividing 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 examples below or a combination of two or more examples.

[0061] The above plate may be provided as one piece or may be provided to include at least two pieces connected to each other.

[0062] In a first example, the plate may include at least two portions that are connected to each other in a direction along a wall defining the vacuum space. One of the two portions may include a portion forming the vacuum space (e.g., a first portion). The first portion may be one portion or may include at least two portions that are sealed to each other. The other of the two portions may include a portion that extends away from the first portion of the first plate in a direction away from the vacuum space or extends inwardly in the vacuum space (e.g., a second portion).

[0063] As a second example, the plate may include at least two layers that are connected to each other in the thickness direction of the plate. One of the two layers may include a layer forming the vacuum space (e.g., a first portion). The other of the two layers may include a portion (e.g., a second portion) that is provided to an external space (e.g., a first space, a second space) of the vacuum space.

[0064] In this case, the second portion may be defined as the outer cover of the plate. The other of the two layers may include a portion (e.g., the second portion) provided in the vacuum space. In this case, the second portion may be defined as the inner cover of the plate.

[0065] The above plate may include a first plate (10) and a second plate (20). One side of the first plate (which may refer to an inner surface of the first plate) may provide a wall defining the vacuum space, and the other side of the first plate (which may refer to an outer surface of the first plate) may provide a wall defining a 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. When 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.

[0066] The inner case may include two or more layers. In this case, one of the plurality of layers may be referred to as an inner panel. One surface of the second plate (which may refer to an inner surface of the second plate) may provide a wall defining the vacuum space, and the other surface of the second plate (which may refer to an outer surface of the second plate) may provide a wall defining a 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. When 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 plurality of layers may be referred to as an outer panel.

[0067] The second space may be a space having a higher temperature than the first space or a space having a lower temperature than the first space. Optionally, the plate may include a side plate (15). In Fig. 2, depending on the position where the side plate is arranged, the side plate may also perform the function of a conductive resistance sheet (60) to be described later. The side plate may include a portion extending in the height direction of the space formed between the first plate and the second plate.

[0068] The above side plate may include a portion extending in the height direction of the vacuum space portion.

[0069] One side of the side plate may provide a wall defining the vacuum space. The other side of the side plate may provide a wall defining an 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. The external space of the vacuum space may be a space in which an additional insulating material to be described later is arranged. The side plate may be formed integrally by extending at least one of the first plate and the second plate. The side plate may be a separate component connected to at least one of the first plate and the second plate.

[0070] 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 folded plate. The curved portion may be provided in at least one of the first plate, the second plate, the side plate, between the first plate and the second plate, between the first plate and the side plate, and between the second plate and the side plate. The plate may include at least one of the first curved portion and the second curved portion, examples of which are as follows.

[0071] First, the side plate may include the first curved portion. A portion of the first curved portion may include a portion connected to the first plate. Another portion of the first curved portion may include a portion connected to a second curved portion. In this case, the first curved portion and the second curved portion may have large radii of curvature. Another portion 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 first curved portion and the second curved portion may have small radii of curvature.

[0072] Second, the side plate may include the second curved portion. A portion of the second curved portion may include a portion connected to the second plate. Another portion of the second curved portion may include a portion connected to the first curved portion. In this case, the radius of curvature of the first curved portion and the second curved portion may be large. Another portion of the second 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 portion and the second curved portion may be small. Here, the straight portion may be defined as a portion having a radius of curvature larger than that of the curved portion. The straight portion may be understood as a completely flat surface or a portion having a radius of curvature larger than that of the curved portion. 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 where the first plate extends in the longitudinal direction of the vacuum space and is away from the second plate.

[0073] 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 a portion of the second plate extending in the longitudinal direction of the vacuum space. The present invention may include a combination of any one of the first and second examples described above and any one of the third and fourth examples described above.

[0074] 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 vacuum level than B means that the vacuum pressure of A is lower than the vacuum pressure of B.

[0075] 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 a combination of two or more of the following examples. The sealing may include fusion welding that 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 or the like without a medium intervening. As another example, a portion of the first and second plates and a portion of the component joint may be fused by high-frequency brazing or the like with a medium intervening such as a filler metal. As yet another example, the plurality of objects may be fused by a heat-generating medium. The sealing may include pressure welding that joins the plurality of objects by pressure applied to at least a portion of the plurality of objects.

[0076] For example, as a component connected to the above-mentioned component joint, an object made of a material having a smaller deformation resistance than the above-mentioned plate can be press-fitted by a method such as pinch-off.

[0077] A machine room (8) may optionally be provided on the outside of the vacuum insulation body. The machine room may be defined as a space in which components connected to the cooling source are stored. Optionally, the vacuum insulation body may include a pipe (40). The pipe may be provided on either side of the vacuum insulation body. The pipe may be provided to exhaust air from the vacuum space (50).

[0078] Optionally, the vacuum insulation body may include a conduit (64) penetrating the vacuum space portion (50) for installation of components connected to the first space and the second space. Examples of the aforementioned conduit may be ports such as exhaust ports or getter ports.

[0079] Figure 3 is a drawing showing an embodiment of a support that maintains the above-mentioned vacuum space. Examples of the support are as follows. The present invention may be any one of the examples below or a combination of two or more examples.

[0080] The above support (30, 31, 33, 35) can reduce deformation of at least a portion of the vacuum space (50), the plate, and the heat transfer resistor to be described later due to external force.

[0081] For this purpose, at least a portion of the plate and the heat transfer resistor to be described later may be provided to support the plate. The external force may include at least one of vacuum pressure and an external force other than the vacuum pressure. The deformation may occur in a direction in which the height of the vacuum space portion decreases. In this case, the support may reduce an increase in at least one of radiation heat conduction, gas heat conduction, surface heat conduction, and supporter heat conduction to be described later.

[0082] The support may be an object provided to maintain a gap between the first plate and the second plate. The support may be an object provided to support the heat transfer resistor. The support may have a greater degree of deformation than the plate. The support may be provided in a part of the vacuum insulator, a device having the vacuum insulator, a wall having the vacuum insulator, or the like, in which the degree of deformation is weak.

[0083] In the present invention, the degree of deformation resistance can indicate the degree to which an object resists deformation due to an external force applied to the object. The degree of deformation resistance can be defined as a value determined by the shape including the thickness of the object, the material of the object, the processing method of the object, etc. Examples of parts where the degree of deformation resistance is vulnerable may include the vicinity of the curved portion formed by the plate, at least a portion of the curved portion, the vicinity of an opening formed in the body of the device provided by the plate, and at least a portion of the opening.

[0084] The support may be arranged to surround at least a portion of the curved portion or the opening. The support may be provided to correspond to the shape of the curved portion or the opening. However,

[0085] The above support is not excluded from being provided in other parts. The above opening can be understood as a part of a device including a main body and a door that can open and close the opening formed in the main body.

[0086] 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 include a portion having a plurality of layers. 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. The support may be

[0087] At least a portion of the plurality of layers may be provided to support the support. Secondly, at least a portion of the support may be provided to be connected to a surface formed on the exterior of the plate. The support may be provided in the vacuum space or an external space of the vacuum space. For example, the plate may include a plurality of layers. The support may be provided in any one of the plurality of layers. Optionally, the support may be provided to support another one of the plurality of layers. As another example, the plate may include a plurality of portions extending in the longitudinal direction.

[0088] The support may be provided as one of the plurality of parts. Optionally, the support may be provided to support another one of the plurality of parts. As another example, the support may be provided as a component distinct from the plate in the vacuum space or an external space of the vacuum space. Optionally, the support may be provided to support at least a portion of a 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.

[0089] One side of the first plate and one side of the second plate may be provided to face each other.

[0090] Third, the support may be provided integrally with the plate. The 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. Duplicate explanations are omitted.

[0091] Examples of a design that reduces heat transfer through the support are as follows. First, at least a portion of a component positioned near the support may be provided so as not to come into contact with the support. At least a portion of a component positioned near the support may be provided so as to be positioned in an empty space provided by the support. Examples of the component may include at least one of a heat transfer resistor described below, an exhaust port, a getter port, a pipe or component connected to the plate, a pipe or component penetrating the vacuum space, and a pipe or component at least a portion of which is positioned in the vacuum space.

[0092] Examples of the aforementioned pipes may be ports such as exhaust ports or getter ports. Examples of the above-mentioned empty space may include at least one of an empty space provided within the support, an empty space provided between multiple supports, and an empty space provided between a support and a separate component distinct from the support.

[0093] Optionally, at least a portion of the component may be disposed in a through hole formed in the support, or disposed in at least one of a space between a plurality of bars, a space between a plurality of connecting plates, and a space between a plurality of supporting plates. Optionally, at least a portion of the component may be disposed in at least one of a space spaced between a plurality of bars, a space spaced between a plurality of connecting plates, and a space spaced between a plurality of supporting plates. Secondly, an insulating material may be provided on or near at least a portion of the support.

[0094] The insulation may be provided so as to be in contact with the support or not in contact. The insulation may be provided at a portion where the support and the plate come into contact. The insulation may be provided over at least a portion of one side and / or the other side of the support. The insulation may be provided so as to cover at least a portion of one side and / or the other side of the support. The insulation may be provided over at least a portion of one side of the support and one side of the other side of the support.

[0095] The above insulation may be 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 may include a plurality of bars. The insulation may be arranged in an area from a point where any one of the plurality of bars is located to a midpoint between any one bar and the surrounding bars. Third, in the case where cold air is transmitted through the support, a heat source may be arranged at the location where the insulation described in the second example is arranged. In the case where the temperature of the first space is lower than the temperature of the second space, the heat source may be arranged at or near the second plate. In the case where heat is transmitted through the support, a cold source may be arranged at the location where the insulation described in the second example is arranged.

[0096] If the temperature of the first space is higher than the temperature of the second space, the cold source may be placed on or near the second plate. As a fourth example, the support may have a higher heat transfer resistance than the metal. The support may include a portion having a higher heat transfer resistance than the plate. The support may include a portion having a lower heat transfer resistance than the additional insulation.

[0097] The above support may include at least one of non-metallic materials, PPS and GF, and LCP. This is because it can achieve high compressive strength, low outgassing and water absorption, low thermal conductivity, high compressive strength at high temperatures, and excellent processability.

[0098] Examples of the above support 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 include any one of the above examples or an example in which at least two of them are combined.

[0099] As a first example, the support may include a bar (30, 31). The bar may support a gap between the first plate and the second plate. To this end, the bar may include a portion extending in a direction connecting the first plate and the second plate. The bar may include at least one of a portion extending in the height direction of the vacuum space and a portion extending in a direction substantially perpendicular to the direction in which the plates extend. The bar may be provided to support only one of the first plate and the second plate. The bar may be provided to support both the first plate and the second plate.

[0100] For example, one surface of the bar may be provided to support a portion of the plate. The other surface of the bar may be provided so as not to contact another portion of the plate. In another example, one surface of the bar may be provided to support at least a portion of the plate. The other surface of the bar may be provided to support another portion of the plate.

[0101] The support may include a bar having an empty space therein. The support may include a plurality of bars, with an empty space provided between the bars. The support may include bars, and the bars may be arranged so that an empty space is provided between the bars and a separate component provided separately. The support may include a portion connected to the bars.

[0102] The above support may optionally include a connecting plate (35) including a portion connecting the plurality of bars. The connecting plate may include at least one of a portion extending in the longitudinal direction of the vacuum space and a portion extending along the direction in which the plate extends. The XZ-plane cross-sectional area of ​​the connecting plate may be larger than the XZ-plane cross-sectional area of ​​the bar. The connecting plate may be provided on at least one of one surface and the other surface of the bar, or may be provided between the one surface and the other surface of the bar.

[0103] At least one of the one side and the other side of the bar may be a side on which the bar supports the plate. The shape of the connecting plate is not limited. The support may include a connecting plate having an empty space provided therein. The support may include a plurality of connecting plates, and an empty space may be provided between the plurality of connecting plates. The support may include a connecting plate.

[0104] The above connecting plate may be arranged so that a void space is provided between the connecting plate and the separate parts provided separately. As a second example, the support may include a support plate (35). The support plate may include at least one of a portion extending in the longitudinal direction of the vacuum space portion and a portion extending along the direction in which the plate extends. The support plate may be provided so as to support only one of the first plate and the second plate.

[0105] The support plate may be provided to support both the first plate and the second plate. For example, one surface of the support plate may be provided to support a portion of the plate. The other surface of the support plate may be provided so as not to contact another portion of the plate. In another example, one surface of the support plate may be provided to support at least a portion of the plate. The other surface 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.

[0106] The support may include a support plate having an empty space provided therein. The support may include a plurality of support plates, and an empty space may be provided between the plurality of support plates. The support may include a support plate, and the support plates may be arranged so that an empty space is provided between the support plates and a separate component provided separately.

[0107] 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 the filler. The interior of the vacuum space may be completely filled by the porous material or the filler. The support may include a plurality of porous materials or a plurality of fillers. The plurality of porous materials or the plurality of fillers may be arranged individually or in contact with each other.

[0108] A void space may be provided within the porous material. A void space may be provided between multiple porous materials. A void space may be provided between the porous material and a separate component distinct from the porous material. In this case, the porous material may be understood to include any one of the aforementioned bars, connecting plates, and support plates.

[0109] A void space may be provided within the filler, between multiple fillers, or between the filler and a separate component distinct from the filler. In this case, the filler may be understood to include any one of the aforementioned bars, connecting plates, and support plates. The support of the present invention may include any one of the aforementioned examples, or examples in which two or more are combined.

[0110] Referring to Fig. 3a, as an example, the support may include a bar (31) and a connecting plate and supporting plate (35). The connecting plate and the supporting plate may be designed separately. Referring to Fig. 3b, as an example, the support may include a bar (31), a connecting plate and supporting plate (35), and a porous material (33) filled within the vacuum space.

[0111] The porous material (33) may have a higher emissivity than the stainless steel material of the plate. However, since it fills the vacuum space, the resistance efficiency of radiant heat transfer is high. 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 radiation resistance sheet, which will be described later. Referring to Fig. 3c, as an example, the support may include at least one of the porous material (33) and the filler (33). The porous material (33) and the filler may be provided in a compressed state so as to maintain a gap in the vacuum space.

[0112] The film (34) may be provided, for example, as a PE material with holes. The porous material (33) or filler may 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 may perform both the function of a radiation resistance sheet, which will be described later, and the function of the support.

[0113] Figure 4 is a drawing illustrating an embodiment of a vacuum insulation body centered on a heat transfer resistor. The vacuum insulation body of the present invention may optionally include a heat transfer resistor. Examples of the heat transfer resistor are as follows. The present invention may be any one of the examples below or a combination of two or more examples.

[0114] 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. The heat transfer resistor (32, 33, 60, 63) may be an object that reduces the amount of heat transfer between the first plate and the second plate. The heat transfer resistor may be arranged on a heat transfer path formed between the first space and the second space. The heat transfer resistor (32, 33, 60, 63) may be arranged on a heat transfer path formed between the first plate and the second plate. The heat transfer resistor may include a portion that extends in a direction along a wall defining the vacuum space.

[0115] 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 away from the plate in a direction away from the vacuum space. The heat transfer resistor may be provided on at least a portion of at least one of the periphery of the first plate and the periphery of the second plate.

[0116] The heat transfer resistor may be provided on at least a portion of at least one of the edges of the first plate and the edges of the second plate. The heat transfer resistor may be provided in a portion where a through hole is formed. The heat transfer resistor may be provided as a pipe connected to the through hole. A separate pipe or separate component distinct from the pipe may be arranged inside the pipe.

[0117] Examples of the aforementioned pipe may be ports such as exhaust ports or getter ports. The heat transfer resistor may include a portion having a higher heat transfer resistance than the plate. In this case, the insulation performance of the vacuum insulation body 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 comes into contact with the outside of the inside of the heat transfer resistor.

[0118] The above shielding member may be provided as an insulating structure. The shielding member may be exemplified by a separate gasket placed on the exterior of the heat transfer resistor. The heat transfer resistor may be a wall defining the third space.

[0119] The example in which the heat transfer resistor is connected to the plate can be understood as replacing the support with the heat transfer resistor in an example in which the support is provided to support the plate. Duplicate descriptions will be omitted. The example in which the heat transfer resistor is connected to the support can be understood as replacing the plate with the support in an example in which the heat transfer resistor is connected to the plate. Duplicate descriptions will be omitted. The example in which heat transfer via the heat transfer resistor is reduced can be applied as a replacement for the example in which heat transfer via the support is reduced. The same descriptions will be omitted.

[0120] In the present invention, the heat transfer resistor may be at least 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 the radiation resistance sheet (32), the porous material (33), the filler (33), and the conduction resistance sheet. As a first example, the heat transfer resistor may include a radiation resistance sheet (32).

[0121] The above-described radiation resistance sheet may include a portion having a greater heat transfer resistance than the above-described plate. In this case, the heat transfer resistance may be a degree of resistance to heat transfer by radiation. The support may also perform the function of the radiation resistance sheet. The conductive resistance sheet, which will be described later, may also perform the function of the radiation resistance sheet. As a second example, the heat transfer resistor may include a conductive resistance sheet (60, 63).

[0122] The conductive resistance sheet may include a portion having a greater heat transfer resistance than the plate. In this case, the heat transfer resistance may be a degree of resistance to heat transfer by conduction. For example, the conductive resistance sheet may have a thickness smaller than at least a portion of the plate. As another example, the conductive resistance sheet may include one end and the other end. The length of the conductive resistance sheet may be longer than the straight-line distance connecting one end of the conductive resistance sheet and the other end of the conductive resistance sheet.

[0123] As another example, the conductive resistance sheet may include a material having a higher heat transfer resistance due to conduction than the plate. As another example, the heat transfer resistance body may include a portion having a smaller radius of curvature than the plate.

[0124] 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. The connecting frame may be an extended portion of the side plate.

[0125] Optionally, the connecting frame (70) may include a part where a first part for sealing the door and the main body, and a second part disposed outside the vacuum space, such as an exhaust port required for the exhaust process and a getter port for maintaining vacuum, are connected to each other.

[0126] 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 outside of the conductive resistance sheet. The conductive resistance sheet may be provided in a corrugated shape. Through this, the heat transfer path can be lengthened and deformation due to pressure difference can be prevented. 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 degree of deformation smaller than at least one of the plate, the radiation resistance sheet, and the support. The radiation resistance sheet may include a portion having a degree of deformation smaller than at least one of the plate and the support. The plate may include a portion having a degree of deformation smaller than the support. The conductive resistance sheet may include a portion having a conductive heat transfer resistance greater than at least one of the plate, the radiation resistance sheet, and the support. The radiation resistance sheet may include a portion having a radiation heat transfer resistance greater than 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.

[0127] For example, at least one of the plate, the conductive resistance sheet, and the connecting frame may include a stainless steel material. The radiation resistance sheet may include an aluminum material. The support may include a resin material.

[0128] Figure 5 is a graph that observes the process of exhausting the interior of a vacuum insulator with respect to time and pressure when a support is used. Examples of the vacuum insulator vacuum exhaust step are as follows. The present invention may be any one of the examples below, or a combination of two or more examples.

[0129] During the above exhaust step, an outgassing step may be performed, which is a process in which gas in the vacuum space and potential gas remaining in the components of the vacuum insulation are exhausted. As an example of the outgassing step, the exhaust step may include at least one of a step of heating or drying the vacuum insulation, a step of providing vacuum pressure to the vacuum insulation, and a step of providing a getter to the vacuum insulation. In this case, it is possible to promote vaporization and exhaust of potential gas remaining in the components provided in the vacuum space. 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 providing vacuum pressure to the vacuum insulation may be performed together.

[0130] Preferably, the step of heating or drying the vacuum insulator and the step of providing a getter to the vacuum insulator may be performed simultaneously. Preferably, after the step of heating or drying the vacuum insulator is performed, the step of cooling the vacuum insulator may be performed. Preferably, the step of providing vacuum pressure to the vacuum insulator and the step of providing a getter to the vacuum insulator may be performed so as not to overlap each other.

[0131] For example, after the step of providing vacuum pressure to the vacuum insulator is performed, the step of providing a getter to the vacuum insulator may be performed. When the vacuum pressure is provided to the vacuum insulator, the pressure in the vacuum space may drop to a certain level and then not drop any further. At this time, the step of providing vacuum pressure to the vacuum insulator may be stopped, and then the getter may be introduced. An example of stopping the step of providing vacuum pressure to the vacuum insulator may be that the operation of a vacuum pump connected to the vacuum space is stopped. When introducing the getter, the step of heating and / or drying the vacuum insulator may be performed simultaneously. Through this, outgassing can be promoted. As another example, the step of providing vacuum pressure to the vacuum insulator may be performed after the step of providing a getter to the vacuum insulator is performed.

[0132] The time during which the vacuum insulation body vacuum exhaust step is performed may be referred to as a vacuum exhaust time. The vacuum exhaust time may include at least one of a time (△t1) during which the vacuum insulation body is heated and / or dried, a time (△t2) during which the vacuum insulation body is maintained in a state in which a getter is introduced, and a time (△t3) during which the vacuum insulation body is cooled. Examples of △t1, △t2, and △t3 are as follows. Any one of the following examples of the present invention or a combination of two or more examples may be used. In the vacuum insulation body vacuum exhaust step, △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 0.2 hr and less than or equal to 0.5 hr. t1b may be greater than or equal to 1 hr and less than or equal to 24.0 hr.

[0133] Preferably, the above △t1 may be 0.3 hr or more and 12.0 hr or less. Preferably, the above △t1 may be 0.4 hr or more and 8.0 hr or less. More preferably, the above △t1 may be 0.5 hr or more and 4.0 hr or less. In this case, it may be applied to a vacuum insulation body having sufficient outgassing even when △t1 is kept as short as possible. For example, among the components of the vacuum insulation body, a component exposed to the vacuum space may include a portion having a lower outgassing rate than any one of the components of the vacuum insulation body that are exposed to the external space of the vacuum space. Specifically, the component exposed to the vacuum space may include a portion having a lower outgassing rate than a thermoplastic plastic.

[0134] More specifically, a support or a radiation resistance sheet may be placed in the vacuum space, and the outgassing rate of the support may be lower than that of the thermoplastic plastic. As another example, among the components of the vacuum insulation body, a component exposed to the vacuum space may include a portion having a higher operating temperature than any one of the components of the vacuum insulation body exposed to the external space of the vacuum space.

[0135] In this case, the vacuum insulation material 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 having a higher operating temperature than the thermoplastic plastic. In a more specific example, a support or radiation resistance sheet may be placed in the vacuum space, and the operating temperature of the support may be higher than that of the thermoplastic plastic.

[0136] As another example, among the components of the vacuum insulation body, the component exposed to the vacuum space may include a larger portion of the metallic material than the portion of the non-metallic material. That is, the mass of the metallic material may be greater than the mass of the non-metallic material. The volume of the metallic material may be greater than the volume of the non-metallic material. The area of ​​the metallic material exposed to the vacuum space may be greater than the area of ​​the non-metallic material exposed to the vacuum space. In the case where there are multiple components exposed to the vacuum space, the sum of the volume of the metallic material included in the first component and the volume of the metallic material included in the second component may be greater than the sum of the volume of the non-metallic material included in the first component and the volume of the non-metallic material included in the second component. In the case where there are multiple parts exposed to the vacuum space, the sum of the mass of the metallic material included in the first part and the mass of the metallic material included in the second part may be greater than the sum of the mass of the non-metallic material included in the first part and the mass of the non-metallic material included in the second part. In the case where there are multiple parts exposed to the vacuum space, the sum of the area of ​​the metallic material included in the first part exposed to the vacuum space and the area of ​​the metallic material included in the second part exposed to the vacuum space may be greater than the sum of the area of ​​the non-metallic material included in the first part exposed to the vacuum space and the area of ​​the non-metallic material included in the second part exposed to the vacuum space.

[0137] As a second example, the t1a may be a value greater than or equal to 0.5 hours and less than or equal to 1 hour. The t1b may be greater than or equal to 24.0 hours and less than or equal to 65 hours. Preferably, the △t1 may be greater than or equal to 1.0 hours and less than or equal to 48.0 hours. Preferably, the △t1 may be greater than or equal to 2 hours and less than or equal to 24.0 hours. More preferably, the △t1 may be greater than or equal to 3 hours and less than or equal to 12.0 hours.

[0138] In this case, it may be a vacuum insulator that needs to maintain △t1 as long as possible. This case may be, for example, the opposite case of the examples described in the first example above, or a case where the component exposed to the vacuum space is a thermoplastic material. Duplicate explanations are omitted. In the vacuum exhaust step of the vacuum insulator, △t2 may be greater than or equal to t2a and less than or equal to t2b. The t2a may be greater than or equal to 0.1 hr and less than or equal to 0.3 hr. The t2b may be greater than or equal to 1 hr and less than or equal to 5.0 hr.

[0139] Preferably, the above △t2 may be 0.2 hr or more and 3.0 hr or less. More preferably, the above △t2 may be 0.3 hr or more and 2.0 hr or less. Even more preferably, the above △t2 may be 0.5 hr or more and 1.5 hr or less. In this case, the vacuum insulator may be sufficiently outgassing through the getter even when △t2 is kept as short as possible.

[0140] In the vacuum exhaust step of the above vacuum insulator, the above △t3 may be greater than or equal to t3a and less than or equal to t3b.

[0141] The above t3a may be greater than or equal to 0.2 hr and less than or equal to 0.8 hr. The above t3b may be greater than or equal to 1 hr and less than or equal to 65.0 hr. Preferably, the above △t3 may be greater than or equal to 0.2 hr and less than or equal to 48.0 hr. Preferably, the above △t3 may be greater than or equal to 0.3 hr and less than or equal to 24.0 hr. More preferably, the above △t3 may be greater than or equal to 0.4 hr and less than or equal to 12.0 hr. More preferably, the above △t3 may be greater than or equal to 0.5 hr and less than or equal to 5.0 hr. After the heating and / or drying steps are performed in the above exhaust step, the above cooling step may be performed.

[0142] For example, if the heating and / or drying step is performed for a long time, △t3 may become long. The vacuum insulation body of the present invention may be manufactured so that △t1 is greater than △t2, or so that △t1 is less than or equal to △t3, or so that △t3 is greater than △t2.

[0143] Preferably, △t2<△t1≤△t3. The vacuum insulation body of the present invention can be manufactured so that △t1+△t2+△t3 is greater than or equal to 0.3 hr and less than or equal to 70 hr. The vacuum insulation body of the present invention can be manufactured so that △t1+△t2+△t3 is greater than or equal to 1 hr and less than or equal to 65 hr.

[0144] The vacuum insulation material of the present invention can be manufactured so 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 manufactured so that △t1+△t2+△t3 is greater than or equal to 3 hr and less than or equal to 6 hr.

[0145] Examples of vacuum pressure conditions during the above exhaust step are as follows. The present invention may be one of the examples below or a combination of two or more examples. During the exhaust step, the lowest value of the vacuum pressure in the vacuum space may be greater than 1.8E-6 Torr. Preferably, the lowest value of the vacuum pressure may be greater than 1.8E-6 Torr and less than or equal to 1.0E-4 Torr. The lowest value of the vacuum pressure may be greater than 0.5E-6 Torr and less than or equal to 1.0E-4 Torr. The lowest value of the vacuum pressure may be greater than 0.5E-6 Torr and less than or equal to 0.5E-5 Torr. More preferably, the lowest value of the vacuum pressure may be greater than 0.5E-6 Torr and less than 1.0E-5 Torr.

[0146] In this way, the minimum vacuum pressure provided during the exhaust step can be limited. This is because, even if depressurization is performed using a vacuum pump during the exhaust step, the rate at which the vacuum pressure decreases slows down below a certain level.

[0147] 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 and less than or equal to 1.0E-1 Torr. The maintained vacuum pressure may be greater than or equal to 1.0E-5 Torr and less than or equal to 1.0E-2 Torr. The maintained vacuum pressure may be greater than or equal to 1.0E-4 Torr and less than or equal to 1.0E-2 Torr. The maintained vacuum pressure may be greater than or equal to 1.0E-5 Torr and less than or equal to 1.0E-3 Torr. The maintained vacuum pressure may be a pressure greater than or equal to 1.0E-4 Torr and less than or equal to 1.0E-3 Torr. The vacuum insulator of the present invention presents the results of predicting the change in vacuum pressure through acceleration experiments on two exemplary products. One product was confirmed to maintain a vacuum pressure of less than 1.0E-04 Torr even after 16.3 years, and the other product was confirmed to maintain a vacuum pressure of less than 1.0E-04 Torr even after 17.8 years.

[0148] The vacuum pressure of a vacuum insulator must be maintained below a certain level even with aging to be used industrially.

[0149] Figure 5a is a graph of the elapsed time and pressure of an exhaust process according to an example, and Figure 5b explains the results of a long-term vacuum maintenance experiment conducted as an acceleration experiment on a vacuum insulation body of a refrigerator having an internal volume of 128 liters.

[0150] Referring to Fig. 5b, it can be seen that the vacuum pressure gradually increases with the passage of time. 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. According to these experimental results, it can be confirmed that the vacuum insulator according to the embodiment is sufficiently applicable to industrial applications.

[0151] Fig. 6 is a graph comparing vacuum pressure and gas conductivity. Referring to Fig. 6, the gas conductivity heat according to vacuum pressure is represented 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 of 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 present inside the vacuum space, it may be the distance between the radiation resistance sheet and the adjacent plate. When the radiation resistance sheet is not present inside the vacuum space, it may be the distance between the first plate and the second plate. It was seen that the point corresponding to the conventional actual heat transfer coefficient of 0.0196 W / mk, which provides insulation by foaming polyurethane, is 5.0E-1 Torr even when the gap size is small, 3 mm.

[0152] Meanwhile, it was confirmed that the point at which the reduction effect of the insulation effect due to gas conduction heat becomes saturated even when the vacuum pressure is lowered is approximately 4.5E-3 Torr. The pressure of 4.5E-3 Torr can be confirmed as the point at which the reduction effect of gas conduction heat becomes saturated.

[0153] Also, when the actual heat transfer coefficient is 0.01 W / mk, it is 1.2E-2 Torr. An example showing the range of vacuum pressure in a vacuum space according to a gap is presented. The support may include at least one of a bar, a connecting plate, and a support plate. In this case, when the gap of the vacuum space is greater than or equal to 3 mm, the vacuum pressure may be greater than or equal to A (A will be described later) and less than 5E-1 Torr. The vacuum pressure may be greater than 2.65E-1 Torr and less than 5E-1 Torr.

[0154] In another example, the support may include at least one of a bar, a connecting plate, and a supporting plate. In this case, the gap of the vacuum space may be greater than or equal to 4.5 mm. In this case, the vacuum pressure may be greater than or equal to A and less than 3E-1 Torr. The vacuum pressure may be greater than 1.2E-2 Torr and less than 5E-1 Torr. In another example, the support may include at least one of a bar, a connecting plate, and a supporting plate, and the gap of the vacuum space may be greater than or equal to 9 mm. In this case, the vacuum pressure may be greater than or equal to A and less than 1.0×10^-1 Torr. The vacuum pressure may be greater than 4.5E-3 Torr and less than 5E-1 Torr.

[0155] Here, A may be a value greater than or equal to 1.0×10^-6 Torr and less than or equal to 1.0E-5 Torr. Preferably, A may be a value greater than or equal to 1.0×10^-5 Torr and less than or equal to 1.0E-4 Torr. When the support includes a porous material or a filler, the vacuum pressure may be greater than or equal to 4.7E-2 Torr and less than or equal to 5E-1 Torr. In this case, it can be understood that the size of the gap is several micrometers to several hundred micrometers. When the support and the porous material are provided together in the vacuum space, an intermediate vacuum pressure between the case where only the support is used and the case where only the porous material is used can be created and used.

[0156] Figure 7 is a drawing explaining the manufacturing process of a vacuum insulation body.

[0157] Optionally, the vacuum insulator may be manufactured by a vacuum insulator component preparation step in which the first plate and the second plate are prepared in advance. Optionally, the vacuum insulator may be manufactured by a vacuum insulator component assembly step in which the first plate and the second plate are assembled. Optionally, the vacuum insulator may be manufactured by a vacuum insulator vacuum exhaust step in which gas in a space formed between the first plate and the second plate is exhausted. Optionally, after the vacuum insulator component preparation step is performed, the vacuum insulator component assembly step and / or the vacuum insulator vacuum exhaust step may be performed.

[0158] Optionally, after the vacuum insulator component assembly step is performed, the vacuum insulator vacuum exhaust step may be performed. Optionally, the vacuum insulator may be manufactured by a vacuum insulator component sealing step (S3) in which a space between the first plate and the second plate is sealed. The vacuum insulator component sealing step may be performed before the vacuum insulator vacuum exhaust step (S4). The vacuum insulator may be manufactured by a device assembly step (S5) in which the vacuum insulator is combined with components constituting the device. The vacuum insulator may be manufactured into an object having a predetermined purpose by the device assembly step (S5). The device assembly step may be performed after the vacuum insulator vacuum exhaust step.

[0159] Here, the components constituting the device may mean components constituting the device together with the vacuum insulator.

[0160] The above vacuum insulation body component preparation step (S1) may be a step in which components constituting the vacuum insulation body are prepared or manufactured. Examples of components constituting the vacuum insulation body may include various components such as plates, supports, heat transfer resistors, and pipes. The vacuum insulation body component assembly step (S2) may be a step in which the prepared components are assembled. The vacuum insulation body component assembly step may include a step in which at least a portion of the support and the heat transfer resistor are arranged on at least a portion of the plate.

[0161] For example, the vacuum insulation component assembly step may include a step of arranging at least a portion of the support and the heat transfer resistor between the first plate and the second plate. Optionally, the vacuum insulation component assembly step may include a step of arranging a through-hole component on at least a portion of the plate. For example, the vacuum insulation component assembly step may include a step of arranging a through-hole component or a surface component between the first and second plates. After the through-hole component is arranged between the first plate and the second plate, the through-hole component may be connected or sealed to the through-hole component fastening portion.

[0162] Examples of the vacuum insulation vacuum exhaust step are as follows. The present invention may be any one of the examples below or a combination of two or more thereof. The vacuum insulation vacuum exhaust step may include at least one of a step of inserting the vacuum insulation into an exhaust path, a getter activation step, a vacuum leak checking step, and an exhaust port closing step. The step of forming the component fastening portion may include at least one of the vacuum insulation component preparation step, the vacuum insulation component assembling step, and the device assembling step. Before the vacuum insulation vacuum exhaust step is performed, a step of cleaning the components constituting the vacuum insulation may be performed. Optionally, the cleaning step may include a step of applying ultrasonic waves to the components constituting the vacuum insulation, and / or a step of providing ethanol or a material containing ethanol on the surface of the components constituting the vacuum insulation. The ultrasonic waves may have an intensity between 10 kHz and 50 kHz. The content of ethanol in the material may be 50% or more. For example, the ethanol content of the above material may be from 50% to 90% or less. As another example, the ethanol content of the above material may be from 60% to 80% or less.

[0163] As 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 insulator may be performed. Optionally, after the washing step, a step of heating the components constituting the vacuum insulator may be performed.

[0164] A heat exchanger may be installed in the vacuum insulator. The following may be optional. The heat exchanger may connect the first space and the second space. The heat exchanger may exchange heat between the refrigerant discharged from the evaporator and the refrigerant sucked into the evaporator. At least a portion of the heat exchanger may be located in the third space.

[0165] Matters and descriptions disclosed in any drawing of this document may provide different embodiments. The content disclosed in any drawing of this document may be applied to the content of other drawings.

[0166] Figure 8 shows an example of how a support and a heat exchanger are installed.

[0167] The following may be optional. Referring to Fig. 8, the heat exchanger (57) may be installed on the rear side of the vacuum insulation body. A first end of a refrigerant pipe forming the heat exchanger may be extended to a machine room (8). The machine room may be located in a second space. A second end of a refrigerant pipe forming the heat exchanger may be extended to a low-temperature space. The low-temperature space may be located in the first space. The heat exchanger may be provided with a predetermined length to enable sufficient heat exchange. The heat exchanger may have a bent portion. The heat exchanger may have a straight portion extending in a straight line. At least two of the straight portions may be provided. A bend portion may be provided between the straight portions. At least one of the bend portions may be bent in the extension direction of the third space. At least one of the bend portions may be bent in the thickness direction of the third space.

[0168] The following may be optional. The support (30) placed on the rear side of the vacuum insulation body may be provided as a single structure. The single structure may be provided as a structure in which at least two individual units are connected to each other. The units (33) may be respectively fastened vertically. The units (33) may be fastened such that the units below and above are alternately fastened. Accordingly, the single structure may be provided. There may be a left-right gap on the left and right sides of the units. The bending portion may not be placed in the left-right gap of each unit. Accordingly, the positioning of the bending portion may be convenient. Accordingly, the heat exchanger may be stably supported. When there are two bending portions, the two bending portions may be placed on the same unit. The heat exchanger may pass through at least two units.

[0169] The following may be optional. The support may be provided in a grid structure. The heat exchanger may pass between the grids. The heat exchanger may be moved while placed on the single structure. The heat exchanger may be placed on the plate while placed on the single structure. The support may be made of PPS. The support may be made of PPS containing glass fiber.

[0170] The following describes the unit. Parts of the description that are the same between the embodiments are described only in one embodiment.

[0171] Figure 9 is a drawing showing an example of a unit of support and a fastening of the unit. Figure 9(a) is a drawing showing the alignment of the unit in a state of preparation for fastening. Figure 9(b) shows the support to which the unit is fastened. See Figure 9.

[0172] The following may be applied selectively. The unit (33) may be provided as one type. The unit may also be cut and used. The unit may be coupled while facing each other vertically. Any unit may be coupled by moving relative to the unit to be coupled in at least one axial direction among two axial directions. The unit may be provided with a plurality of grids. The unit may be provided with a first support (31). The first support may be a bar (31). The bar may extend in a direction intersecting the support plate (35). The unit may be provided with a second support (36). The second support may be a fastener. The fastener may be provided on a portion of the edge of the unit. The fastener may have an insertion groove. The unit may be provided with a third support (38). The third support may be provided on a portion of the edge of the unit. The third support may be fastened to the second support. The third support may be a protrusion. The protrusion may be fitted into and fixed to the fastening hole. The unit may be provided with a fourth support (39). The fourth support may be a groove. The fourth support may be fastened to the first support. The fourth support may have a portion that opens in a direction intersecting the support plate (35). The unit may be provided as an injection molded product. An injection gate into which an injection fluid is injected may be provided to the unit. The first and fourth supports may be alternately provided along a grid. Accordingly, the units may be fastened to each other in a vertical direction. Accordingly, the units may be fastened to each other while the first and fourth supports face each other. Accordingly, the units may be fastened to each other in a vertical direction even if they are spaced apart in at least one of the X-axis and Y-axis directions along the extension direction of the vacuum space portion.Here, the spacing unit can be given as a 2n (where n is a natural number) grid (which can be referred to as a grid or pitch). The second and third supports can be provided on the facing edges of the unit body. Thus, the unit body can be fastened in the left-right direction. The left-right direction can be at least one of the X-axis and Y-axis directions along the extension direction of the vacuum space.

[0173] The following may be optionally applied. At least two of the injection gates in the support may overlap each other vertically. The overlapping injection gates may be located in the center of the unit body. At least two of the injection gates in the support may not overlap each other vertically. The non-overlapping injection gates may be located in the periphery of the unit body.

[0174] The following may be applied selectively. An area where the injection gates have a short spacing and an area where the injection gates have a long spacing may be distinguished. The area where the injection gates have a short spacing may be in the center of the unit body. The area where the injection gates have a short spacing may include an area where the injection gates overlap vertically. The area where the injection gates have a long spacing may be in the periphery of the unit body. The area where the injection gates have a short spacing may include an area where the injection gates do not overlap vertically.

[0175] The following may be optionally applied. Certain edges of the above unit may not be provided with any support. Consequently, the unit may not be fastened in any direction.

[0176] Fig. 10 is a drawing showing an example of a unit of support and a fastening of the unit. See Fig. 10.

[0177] The above 2nd and 3rd supports can be fastened to each other. The above 1st and 4th supports can be fastened to each other. The following items can be applied selectively. The lower side can have a unit fastened in the extension direction (biaxial direction) of the vacuum space. The upper side can also have a unit fastened in the extension direction (biaxial direction) of the vacuum space. The lower side unit and the upper side unit can be fastened to each other. The above units can be infinitely expanded in the extension direction of the vacuum insulation body.

[0178] The above unit may have various examples. Various examples of embodiments of the above unit and supports implemented with the unit will be described. Before the explanation, terminology will be defined. When the above unit bodies are fastened in the same vertical direction with only the rotation angle being different, it is called symmetrical alignment of the unit bodies. The above symmetrical alignment may be referred to as non-overlapping. Here, non-overlapping may mean that the edges of the unit bodies are not aligned vertically with each other. The state of the above symmetrical alignment may mean that the edge of the unit body on one side of the upper and lower side is aligned with the edge of the unit body on the other side. When the edge of the unit body on one side of the upper and lower side is not aligned with the edge of the unit body on the other side, it may be referred to as non-alignment of the unit bodies. The above non-alignment may be referred to as overlapping. Here, overlapping may mean that the edges of the unit bodies are aligned vertically with each other.

[0179] Fig. 11 is a support of an embodiment. Fig. 11(a) shows a support in which the units are symmetrically aligned. Fig. 11(b) is a cross-sectional view taken along line 1-1' of Fig. 11(a). See Fig. 11.

[0180] The upper unit (33a) and the lower unit (33b) may be the same. The unit may be provided with the first and fourth supports alternately. The first Y-axis edge of the unit may be provided as an end of the first support (31)...the fourth support (39). Here, the meaning of '...' may refer to the alternation of the first and fourth supports. The second Y-axis edge of the unit may be provided as an end of the fourth support...the first support. The first Y-axis edge and the second Y-axis edge may refer to a pair of Y-axis edges facing each other in the unit. The first X-axis edge of the unit may be provided as an end of the first support (31)...the fourth support (39). The second X-axis edge of the above unit may be provided as an end of the fourth support...the first support. The first X-axis edge and the second X-axis edge may refer to a pair of X-axis edges facing each other in the unit. A unit in which the first and second supports are arranged in the above-mentioned intersection relationship may be referred to as a two-axis male-female asymmetric unit.

[0181] The above support may be provided with second and third supports (36)(38). The second and third supports may be directly connected to form a larger support.

[0182] Fig. 12 is a support of an embodiment. Fig. 11(a) shows a support in which the units are misaligned. Fig. 12(b) is a cross-sectional view taken along line 1-1' of Fig. 12(a). See Fig. 12.

[0183] The above two-axis male and female asymmetrical units can be connected vertically without being aligned. They can be connected by moving one pitch in two axes in the extension direction of the vacuum space. The above support may not have the second and third supports (36)(38). The upper and lower units can be connected by crossing each other. The above support can be infinitely large. An empty area (S) in which one grid of one unit is empty can be provided. The empty area (S) can be an area without a support plate or support on either side. Components necessary for the operation of the vacuum insulator, such as a tube and a getter, can be placed in the empty area (S). Among the above empty areas (S), an area at the edge of the support can be supported by a single bar or a single support plate. An area at the edge of the support in the above empty areas (S) can be removed later.

[0184] Fig. 13 is a support of an embodiment. Fig. 13(a) shows a support in which the units are misaligned. Fig. 13(b) is a cross-sectional view taken along line 1-1' of Fig. 13(a). See Fig. 13.

[0185] The above two-axis male and female asymmetrical units can be connected vertically without being aligned. They can be connected by moving two pitches in one axis in the extension direction of the vacuum space. The support can be provided only on a pair of edges where the second and third supports (36)(38) face each other. The upper and lower units can be connected by crossing each other. The support can be infinitely large. A large empty area (S1) with two grids can be provided on one of the units. A large component required for the operation of a vacuum insulator such as a heat exchanger can be placed in the large empty area (S1). Compared to the large empty area (S1), a one-grid empty area can be referred to as a small empty area (S2). Small components required for the operation of a vacuum insulator such as a pipe or a getter can be placed in the small empty area (S2).

[0186] Fig. 14 is a support of an embodiment. Fig. 14(a) shows a support in which the units are symmetrically aligned. Fig. 14(b) is a cross-sectional view taken along line 1-1' of Fig. 14(a). See Fig. 14.

[0187] The upper unit (33a) and the lower unit (33b) may be the same. The unit may be provided with the first and fourth supports alternately. The first Y-axis edge of the unit may be provided as an end of the fourth support (39)...the fourth support (39). Here, the meaning of '...' may refer to the alternation of the first and fourth supports. The second Y-axis edge of the unit may be provided as an end of the first support...the first support. The first Y-axis edge and the second Y-axis edge may refer to a pair of Y-axis edges facing each other in the unit. The first X-axis edge of the unit may be provided as an end of the fourth support (39)...the first support (31). The second X-axis edge of the above unit may be provided as an end of the first support...the fourth support. The first X-axis edge and the second X-axis edge may refer to a pair of X-axis edges that face each other in the above unit. A unit in which the first and second supports are arranged in the above-mentioned intersection relationship may be referred to as a single-axis male-female symmetric unit.

[0188] The above 1-axis hermaphroditic unit body can be manufactured in various cases by changing the grid number of the X-axis and the grid number of the Y-axis. The above 1-axis hermaphroditic unit body can provide various mutually isomeric units by rotating in 90-degree units.

[0189] The above support may be provided with second and third supports (36)(38). The second and third supports may be connected to form a larger support.

[0190] Figure 15 is a support of an embodiment. Figure 15 shows a support in which the units are not aligned. See Figure 15.

[0191] The above 1-axis male-female symmetrical units can be connected vertically without being aligned. They can be connected by moving 1 pitch along one axis in the extension direction of the vacuum space. The upper unit (33a) can be rotated at a right angle. The above support can be provided with second and third supports (36) (38). The upper and lower units can be connected by crossing each other. The above support can be infinitely large.

[0192] Fig. 16 is a support of an embodiment. Fig. 16(a) is a support that is fastened by moving one pitch in two axes in the extension direction of the vacuum space. Fig. 16(b) is a cross-sectional view taken along line 1-1' of Fig. 16(a). See Fig. 16.

[0193] The above-described single-axis male-female symmetrical unit can provide various combinations of supports. The above-described single-axis male-female asymmetrical unit can be connected vertically without being aligned. It can be connected by moving one pitch in two directions in the extension direction of the vacuum space. The above-described support may not have the second and third supports (36)(38). The upper and lower units can be connected by crossing each other. The above-described support can be infinitely large. One grid of the unit on either side can be provided with a small empty area (S1).

[0194] Figure 17 shows a support of an embodiment. Figures 17(a) and 17(b) show supports that are fastened by moving two pitches along one axis in the extension direction of the vacuum space. Figures 17(c) and 17(d) show supports that are fastened by moving two pitches along one axis in the extension direction of the vacuum space. See Figure 17.

[0195] The above-described 1-axis male-female symmetrical unit can provide various combinations of support. The above-described 1-axis male-female asymmetrical unit can be connected vertically without being aligned. It can be connected by moving 1 pitch along 1 axis in the extension direction of the vacuum space. The above-described support can be provided on a pair of opposing edges of the second and third supports (36) (38). The upper and lower units can be connected by crossing each other. The above-described support can be infinitely large. One grid of the unit on either side can be provided with a small empty area (S1). The above-described 1-pitch movement and the above-described 2-pitch movement can have different rotational states of the upper and lower units.

[0196] Fig. 18 is a support of an embodiment. Fig. 18(a) shows a support in which the upper and lower units are misaligned in the X-axis direction of the vacuum space. Fig. 18(b) shows a support in which the upper and lower units are misaligned in the Y-axis direction of the vacuum space. See Fig. 18.

[0197] The upper unit (33a) and the lower unit (33b) may be the same. The unit may be provided with the first and fourth supports alternately. The first Y-axis edge of the unit may be provided as an end of the fourth support (39)...the fourth support (39). Here, the meaning of '...' may refer to the alternation of the first and fourth supports. The second Y-axis edge of the unit may be provided as an end of the first support...the first support. The first Y-axis edge and the second Y-axis edge may refer to a pair of Y-axis edges facing each other in the unit. The first X-axis edge of the unit may be provided as an end of the fourth support (31)...the fourth support (39). The second X-axis edge of the above unit may be provided with a first support...an end of the first support. The first X-axis edge and the second X-axis edge may refer to a pair of X-axis edges facing each other in the unit. A unit in which the first and second supports are arranged in the above-described crossing relationship may be referred to as a two-axis male-female symmetric unit.

[0198] The above support may be provided with second and third supports (36)(38). The second and third supports may be connected to form a larger support.

[0199] The above two-axis male-female symmetrical units can be connected vertically without being aligned. The two-axis male-female symmetrical units cannot be symmetrically aligned. They can be connected by moving one pitch in any one axis in the extension direction of the vacuum space. The upper and lower units can be connected by crossing each other. The support can be infinitely large. An empty area (S) in which one grid of the units on either side is vacant can be provided. Components necessary for the operation of the vacuum insulator, such as a tube and a getter, can be placed in the empty area (S1).

[0200] Fig. 19 is a support of an embodiment. Fig. 19(a) shows a support in which the upper and lower units are not aligned in the X-axis direction of the vacuum space. Fig. 19(b) is a cross-sectional view taken along line 1-1' of Fig. 19(a). Fig. 19(c) is a plan view of Fig. 19(a). See Fig. 19.

[0201] Either one of the upper and lower units (33a)(33b) can be fastened by moving three pitches relative to the other in the first axis (e.g., X-axis) in the extension direction of the vacuum space. Either one of the upper and lower units (33a)(33b) can be fastened by moving three pitches relative to the other in the second axis (e.g., Y-axis) in the extension direction of the vacuum space. Adjacent upper units can be spaced two pitches apart from each other. Adjacent upper units can be spaced two pitches apart from each other. The upper and lower units can be fastened by crossing each other. The support can be infinitely large. It can provide both a large empty area (S1) in which two grids of one unit are empty and a small empty area (S2) in which two grids of one unit are empty.

[0202] Embodiments of the unit body can provide support by moving by 2n (n is a natural number) of grid numbers along at least one axis of the extension direction of the vacuum space portion. This is because the first and fourth supports are alternated.

[0203] Fig. 20 is a drawing showing the fastening relationship along the extension direction of the vacuum space of the unit body. Fig. 20(a) is a partial cross-sectional view of the unit body of the embodiment. Fig. 20(b) is a partial cross-sectional view of the support of the embodiment. See Fig. 20.

[0204] The following may be provided optionally. The first and second supports (31) (39) may be provided alternately. The upper unit (33a) and the lower unit (33b) may be fastened to each other in the thickness direction of the vacuum space. The upper unit (33a) and the lower unit (33b) may be fastened to each other alternately. Accordingly, the support may provide a single structure. At least two lower units may be fastened to each other by the second and third supports (36) (38). The same may be true for at least two upper units.

[0205] Figure 21 is a support of an embodiment. Figure 21(a) shows a unit body of the embodiment. Figure 21(b) shows the symmetrical alignment of the unit body of the embodiment. See Figure 21.

[0206] In the unit, first supports (31) may be gathered in a first region (311). The following may be optionally applied. In the unit, fourth supports (39) may be gathered in a second region. Each support may be evenly arranged in at least one of the first and second regions. In the unit, at least one of the first and second supports may be unevenly arranged. A first density of injection gates may be high in a region where there are many first supports. A density of injection gates may be lower than the first density in a region where there are many fourth supports. The injection gates may be evenly arranged in each region. A boundary region (312) may be provided between each region. The boundary region may extend in one direction. There may be at least two boundary regions. The boundary regions may intersect each other. A pair of facing edges of the above unit may be provided with second and third supports (36)(38). The above unit may be referred to as a two-axis male-female group alternating unit.

[0207] The above two-axis male-female group alternating unit can be fastened as an upper unit (33a) and a lower unit (33b). The upper unit (33a) and the lower unit (33b) can be the same type of unit. Each unit can be fastened at an appropriate rotation angle. The supporter can be symmetrically aligned in any one axial direction in the extension direction of the vacuum space. The support can be infinitely expanded by the unit.

[0208] Fig. 22 is a unit of support of an embodiment. Fig. 23 is a support of an embodiment. Fig. 24 is an enlarged view of A of Fig. 23. See Figs. 22 to 24.

[0209] The upper unit (33a) and the lower unit (33b) may be identical to each other. The unit may be provided with the first and fourth supports alternately along one axis. The unit may be provided with the first and fourth supports continuously along one axis. The following may be optional. The first Y-axis edge of the unit may be provided as an end of the fourth support (39)...the first support (31). Here, the meaning of '...' may refer to alternating the first and fourth supports. The second Y-axis edge of the unit may be provided as an end of the first support...the fourth support. The first Y-axis edge and the second Y-axis edge may refer to a pair of Y-axis edges facing each other in the unit. The fourth support (39) may be provided at both ends of the first X-axis edge of the unit. The first X-axis edge may be provided with a fourth support (39). The second X-axis edge of the unit may be provided with a first support at both ends. The first support (31) may be provided with a first X-axis edge. The first X-axis edge and the second X-axis edge may refer to a pair of X-axis edges facing each other in the unit. A unit in which the first and second supports are arranged in the above-described crossing relationship may be referred to as a 1-axis male-female alternating 1-axis symmetric unit.

[0210] The above support may be provided with second and third supports (36)(38). The second and third supports may be directly connected to form a larger support.

[0211] The above 1-axis male-female alternating 1-axis symmetrical unit bodies can be connected vertically without being aligned. They can be connected by moving 1 pitch along one axis in the extension direction of the vacuum space. The upper and lower units can be connected by crossing each other. The above support can be infinitely large.

[0212] The above 1-axis male-female alternating 1-axis symmetrical unit body can change the axis along which the male and female bodies alternate. This can be equivalent to rotating the unit body by 90 degrees or 270 degrees.

[0213] Figure 25 is a drawing illustrating the superposition of the above-mentioned 1-axis male-female alternating 1-axis symmetrical units. Figure 25(a) shows symmetric alignment. Figure 25(b) shows misalignment. See Figure 25.

[0214] The above-described 1-axis male-female alternating 1-axis symmetrical unit body can be symmetrically aligned. In this case, the second and third supports (36)(38) can be provided. The above-described support can be infinitely extended. The above-described 1-axis male-female alternating 1-axis symmetrical unit body can be non-aligned. In this case, either the upper unit body (33a) or the lower unit body (33b) can be fastened by moving 2n (n is a natural number) pitches relative to the other one along a certain axis. Here, the certain axis can be the axis along which the first and second supports alternate, that is, the axis along which the male and female alternate. In this case, either the upper unit body (33a) or the lower unit body (33b) can be fastened by moving n (n is a natural number) pitches relative to the other one along another axis. Here, the certain axis can be the axis along which the first and second supports are continuous. It can provide both large empty areas where two or more grids of either unit are empty and small empty areas where less than two grids of either unit are empty.

[0215] Fig. 26 is a fastening structure of an exemplary unit body. Fig. 27(a) is another support of an exemplary unit body. Fig. 27(b) is a cross-sectional view taken along line 1-1' of Fig. 27(a). See Figs. 26 and 27.

[0216] The upper unit (33a) and the lower unit (33b) may be the same. The unit may be provided with the first and fourth supports alternately along one axis. The unit may be provided with the first and fourth supports continuously along one axis. The following may be optional. The first Y-axis edge of the unit may be provided as an end of the fourth support (39)...the fourth support (39). Here, the meaning of '...' may refer to the alternation of the first and fourth supports. The second Y-axis edge of the unit may be provided as an end of the fourth support...the fourth support. The first Y-axis edge and the second Y-axis edge may refer to a pair of Y-axis edges facing each other in the unit. The first X-axis edge of the unit may be provided with a first support (31) at both ends. A first support (31) may be continuous at the first X-axis edge. A first support may be provided at both ends of a second X-axis edge of the unit. A first support (31) may be continuous at the first X-axis edge. The first X-axis edge and the second X-axis edge may refer to a pair of X-axis edges facing each other in the unit. A unit in which the first and second supports are arranged in the above-mentioned intersection relationship may be referred to as a single-axis male-female alternating two-axis symmetric unit. Unlike the single-axis male-female alternating one-axis symmetric unit, the single-axis male-female alternating two-axis symmetric unit may be symmetrical with respect to both the X-axis and the Y-axis.

[0217] The above support may be provided with second and third supports (36)(38). The second and third supports may be directly connected to form a larger support.

[0218] The above-mentioned one-axis male-female alternating two-axis symmetrical unit body may be difficult to symmetrically align. The above-mentioned one-axis male-female alternating two-axis symmetrical unit body may be non-aligned. In this case, either the upper unit body (33a) or the lower unit body (33b) may be fastened by moving (1+2n) (n is 0 or a natural number) pitches along a certain axis with respect to the other. Here, the certain axis may be the axis along which the first and second supports alternate, that is, the axis along which the male and female alternate. In this case, either the upper unit body (33a) or the lower unit body (33b) may be fastened by moving n (n is a natural number) pitches along another axis with respect to the other. Here, the certain axis may be the axis along which the first and second supports are continuous. The upper and lower units may be fastened by crossing each other. The above-mentioned support may be infinitely large. It can provide both a large empty area where two or more grids of either unit are empty and a small empty area where less than two grids of either unit are empty.

[0219] The above one-axis male-female alternating two-axis symmetric unit body can change the axis along which the male and female bodies alternate. This can be equivalent to rotating the unit body by 90 degrees or 270 degrees.

[0220] Figure 28 shows the unit and support of the embodiment. Figure 28(a) shows a single-axis male-female group alternating unit. Figure 28(b) shows a support for the single-axis male-female group alternating unit. See Figure 28.

[0221] In the unit, the first support (31) may be gathered in the first region (311). The following may be optionally applied. In the unit, the fourth support (39) may be gathered in the second region (361). Each support may be evenly arranged in at least one of the first and second regions. The injection gate may be evenly arranged in each region. A boundary region (362) may be provided between each region. The boundary region may extend in one direction. There may be one boundary region. Second and third support (36) (38) may be provided on at least one pair of facing edges of the unit. The unit may be referred to as a uniaxial male-female group alternating unit.

[0222] The above 1-axis male-female group alternating unit can be fastened as an upper unit (33a) and a lower unit (33b). The upper unit (33a) and the lower unit (33b) can be the same type of unit. The unit can be symmetrically aligned. The unit can be non-aligned. The support can be infinitely expanded by the unit.

[0223] Figure 29 is a plan view of a single-axis male-female group alternating unit. See Figure 29.

[0224] The above-mentioned 1-axis male-female group alternating unit may have injection gates (34) that are not uniform in the X-axis direction. The first density of the injection gates may be high in an area where the first support bodies are numerous. The density of the injection gates may be lower than the first density in an area where the fourth support bodies are numerous. The above-mentioned 1-axis male-female group alternating unit may have injection gates that are not uniform in the Y-axis direction. The above-mentioned 2nd and 3rd supports (36)(38) may be provided on a pair of facing edges.

[0225] According to the present invention, a vacuum insulation material can be provided at low cost.

Claims

1. A first plate having a first temperature; A second plate having a second temperature different from the first temperature; A vacuum space provided between the first plate and the second plate; and Supporting the above vacuum space, and including a support provided in the vacuum space or near the vacuum space, The above vacuum space portion is provided to extend in the X-axis or Y-axis direction, which is the longitudinal direction of the vacuum space portion, and to have a height in the Z-axis direction, which is the height direction of the vacuum space portion. The above support is a first unit; and Including a second unit placed near the first unit in the longitudinal direction of the vacuum study, The above support includes a second support provided on the periphery of the first unit and a third support provided on the periphery of the second unit and connected to or supported by the second support, The above support includes a first support and a second support including a portion provided spaced apart from the first support in the height direction of the vacuum space portion, In the first unit of the above first support, A first support body that is fastened or supported by at least one of the first unit and the second unit of the second support; and a fourth support body having a shape that can be fastened or supported by the first support body are formed, A vacuum insulator in which the first unit of the first support is provided as a single type of unit or a unit of the same shape as at least one of the first and second units of the second support.

2. In paragraph 1, The first and fourth supports of the above support are provided spaced apart by a first interval (pitch) in the longitudinal direction of the vacuum space portion, A vacuum insulator in which the first unit of the first support is moved in the longitudinal direction of the vacuum space by n pitches (n is a natural number greater than 0) relative to the first unit of the second support and is connected or supported.

3. In paragraph 2, A vacuum insulator in which a component is placed in a blank area (S) formed by moving the first unit of the first support in the longitudinal direction of the vacuum space by n pitches (n is a natural number greater than 0) relative to the first unit of the second support and being fastened or supported.

4. In paragraph 1, The above support includes a first support provided in multiples. A vacuum insulator comprising a first region in which a plurality of first supports are provided at a plurality of points spaced apart by a first interval, and a second region which is an empty region (S) in which the first supports are not provided at at least some of the plurality of points.

5. In paragraph 4, A vacuum insulator in which components are placed in the second region.

6. In paragraph 1, A vacuum insulator having a first unit of the first support provided with at least two supports, a first region having a high density of the first support among the at least two units, and a second region having a high density of the second support among the at least two units.

7. In paragraph 6, A vacuum insulator comprising a boundary region formed between the first region and the second region, and in which a component is placed in the boundary region.

8. In paragraph 1, A vacuum insulator including a first unit of the support, wherein the first support and the fourth support are arranged alternately in one of the X-axis and the Y-axis, and each of the first and fourth supports is arranged continuously without alternating in the other direction of the X-axis and the Y-axis.

9. In paragraph 8, A vacuum insulator in which the first unit of the first support is connected or supported by moving 1+2n pitches (n is 0 or a natural number) or 2n pitches (n is a natural number greater than 0) along the first axis, with respect to the first unit of the second support, with respect to the first support and the fourth support.

10. In paragraph 8, A vacuum insulator in which the first unit of the first support is connected or supported by moving n pitches (n is a natural number greater than 0) along the second axis in which the first and fourth supports are arranged continuously without alternation, relative to the first unit of the second support.

11. In paragraph 1, The first unit of the above support is a vacuum insulator in which the first support and the fourth support are arranged alternately in the X-axis and Y-axis directions.

12. In paragraph 11, A vacuum insulator in which the first unit of the first support is connected or supported by moving 1+2n pitches (n is 0 or a natural number) or 2n pitches (n is a natural number greater than 0) along the first axis, with respect to the first unit of the second support, with respect to the first support and the fourth support.

13. In paragraph 11, A vacuum insulator in which the first unit of the first support is connected or supported by moving n pitches (n is a natural number greater than 0) along the second axis in which the first and fourth supports are arranged continuously without alternation, relative to the first unit of the second support.

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