Vacuum adiabatic body

Abstract

The vacuum adiabatic body according to the present invention may comprise: 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.

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 space may include a sealing portion that seals the first plate and the second plate so as to provide the vacuum space. A radiation resistance sheet that reduces radiation heat transfer through the vacuum space may be included. A heat exchanger mounted in the vacuum space may be included.

[0008] Optionally, the radiation resistance sheet may be provided as a single sheet. A removal portion through which the heat exchanger passes may be formed on the single sheet. The radiation resistance sheet may be provided as a plurality of sheets. At least two of the plurality of sheets may not be in contact with each other. At least two of the plurality of sheets may be placed on the same plane. The heat exchanger may be placed in a gap between at least two of the plurality of sheets. The heat exchanger may not be placed in a gap between at least two of the plurality of sheets. At least two of the radiation resistance sheets may be provided spaced apart in the height direction of the vacuum space. The at least two radiation resistance sheets may have the same or different boundary areas and removal portions in the height direction of the vacuum space.

[0009] Optionally, an anti-condensation device may be provided on a second plate adjacent to a portion through which the heat exchanger passes. The anti-condensation device may be an insulating material provided on an outer surface or an inner surface of the second plate. The anti-condensation device may be a heater, a heat pipe, or a surface heating device provided on an outer surface or an inner surface of the second plate. The anti-condensation device may be a heat diffusion plate provided on an outer surface or an inner surface of the second plate. The anti-condensation device may be provided on a first stage of the heat exchanger adjacent to the evaporator. A radiation shield surrounding at least a portion of the heat exchanger may be included. The cross-section of the radiation shield may be provided as a closed curve. The radiation shield may be provided with a resin layer and two reflective layers. The radiation shield may have a greater shielding effect on a contact portion of two refrigerant pipes forming the heat exchanger than on other portions. At least a portion of the radiation shield may be provided in a circular shape. At least a portion of the radiation shield may be provided in a shape corresponding to the shape of the heat exchanger. The radiation shield may be provided in the form of a tube.

[0010] Optionally, a spacing member supported on the radiation resistance sheet may be included so that the radiation resistance sheet maintains a predetermined spacing in the thickness direction of the vacuum space. At least a portion of the spacing member may be fitted to the radiation resistance sheet. A removal area in which the radiation resistance sheet is not provided may be included. At least one of an insulating material and a radiation shielding film placed in the removal area may be included. A distance between at least one of the insulating material and the radiation shielding film and one of the first and second plates adjacent to the insulating material and the radiation shielding film may be shorter than a distance between at least one of the insulating material and the radiation shielding film and the heat exchanger. A spacing member supported on the radiation resistance sheet to maintain the spacing of the radiation resistance sheet may be further included, and an end of the spacing member may be in contact with at least one of the insulating material and the radiation shielding film.

[0011] Optionally, the radiation resistance sheet may include a deformation portion formed to accommodate the heat exchanger. A radiation shielding film may be interposed between the deformation portion and the heat exchanger. The radiation shielding film may be a tube. The radiation resistance sheet may support the heat exchanger. A supporter for maintaining a gap between the vacuum space may be included. The supporter for maintaining a gap between the vacuum space may be included, and the deformation portion may be in contact with the supporter. The support may include a support plate and a bar extending from the support plate toward the vacuum space. The distance between the deformation portion and the support plate may be shorter than the distance between the deformation portion and the heat exchanger. The radiation resistance sheet may include at least two radiation resistance sheets spaced apart from each other above and below the heat exchanger. Of the at least two radiation resistance sheets, at least one may not have the deformation portion. Of the at least two radiation resistance sheets, at least one may be open. The deformation portions of the at least two copy resistance sheets may be provided in a mirror shape. At least some of the deformation portions may be circular. At least some of the deformation portions may be provided flat. At least some of the deformation portions may not be in contact with the heat exchanger. The support may include a support plate and a bar extending from the support plate toward the vacuum space. The size of the deformation portion may be larger than the gap between adjacent bars.

[0012] Optionally, a gap block may be provided between the radiation resistance sheet and the heat exchanger to space at least a portion of the heat exchanger and the radiation resistance sheet apart. A radiation shielding film may be interposed between the heat exchanger and the gap block. At least one of a contact surface between the radiation resistance sheet and the gap block, a contact surface between the gap block and the heat exchanger, and a contact surface between the gap block and the radiation shielding film may be in line contact. At least one of a contact surface between the radiation resistance sheet and the gap block, a contact surface between the gap block and the heat exchanger, and a contact surface between the gap block and the radiation shielding film may be in point contact. A cross-sectional shape of the gap block may be a closed curve. A cross-sectional shape of the gap block may be an open curve. At least a portion of an outer shape of the gap block and an inner shape of the radiation resistance sheet may coincide.

[0013] Optionally, insulation may be provided adjacent to the heat exchanger. The insulation may be adjacent to at least one of the first and second plates rather than the heat exchanger. A deformation portion may be provided for deforming the radiation resistance sheet so that the radiation resistance sheet approaches the plate.

[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] Figure 9 is a drawing showing the relationship between the support, the heat exchanger, and the radiation resistance sheet.

[0026] Figure 10 is a drawing showing the relationship between a radiation resistance sheet and a heat exchanger.

[0027] Figures 11 and 12 are drawings showing that the copy resistance sheet is provided in multiple sheets.

[0028] Fig. 13 is a drawing in which at least two radiation resistance sheets are arranged in the height direction of the vacuum space.

[0029] Fig. 14 is a drawing showing a case where a dew formation prevention mechanism is provided on the outer surface of the second plate.

[0030] Figure 15 is a cross-sectional view of a heat exchanger in which a radiation shield is provided and a cross-sectional view of the radiation shield.

[0031] Fig. 16 is a cross-sectional view of a radiation shielding film according to an embodiment.

[0032] Figure 17 is a perspective view and an end view of a radiation shield.

[0033] Fig. 18 is a drawing illustrating a method for blocking heat transfer in a heat exchanger.

[0034] Figure 19 is a drawing of various embodiments for blocking radiant heat of a heat exchanger.

[0035] Fig. 20 is an example in which a gap block is placed between a copy resistance sheet and a heat exchanger.

[0036] Fig. 21 is a drawing of an embodiment in which insulation is provided.

[0037] Fig. 22 is a drawing showing various embodiments of a copy resistance sheet.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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).

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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).

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] The above plate may be provided as one piece or may be provided to include at least two pieces connected to each other.

[0063] 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).

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] The above side plate may include a portion extending in the height direction of the vacuum space portion.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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).

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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,

[0086] 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.

[0087] 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

[0088] 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.

[0089] 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.

[0090] One side of the first plate and one side of the second plate may be provided to face each other.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] 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.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] 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.

[0109] 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.

[0110] 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.

[0111] 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.

[0112] 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.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] 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.

[0117] 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.

[0118] 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.

[0119] 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.

[0120] 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.

[0121] 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).

[0122] 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).

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] 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.

[0128] 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.

[0129] 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.

[0130] 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.

[0131] 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.

[0132] 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.

[0133] 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.

[0134] 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.

[0135] 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.

[0136] 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.

[0137] 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.

[0138] 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.

[0139] 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.

[0140] 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.

[0141] 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.

[0142] 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.

[0143] 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.

[0144] 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.

[0145] 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.

[0146] 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.

[0147] 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.

[0148] 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.

[0149] The vacuum pressure of a vacuum insulator must be maintained below a certain level even with aging to be used industrially.

[0150] 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.

[0151] 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.

[0152] 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.

[0153] 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.

[0154] 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.

[0155] 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.

[0156] 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.

[0157] Figure 7 is a drawing explaining the manufacturing process of a vacuum insulation body.

[0158] 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.

[0159] 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.

[0160] Here, the components constituting the device may mean components constituting the device together with the vacuum insulator.

[0161] 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.

[0162] 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.

[0163] 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.

[0164] 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.

[0165] 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.

[0166] 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.

[0167] Figure 8 shows an example of how a support and a heat exchanger are installed.

[0168] 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.

[0169] The following may be optional. The support (30) placed on the rear side of the vacuum insulation body may be provided as a single-body structure. The single-body structure may be provided as a structure in which at least two individual units are connected to each other. The units (301) may be respectively connected vertically. The units (301) may be connected such that the units below and above are staggered. Accordingly, the single-body structure may be provided. There may be a left-right gap between the left and right sides of the units. The bending portion may not be placed in the left-right gap between 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.

[0170] 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.

[0171] Figure 9 is a drawing showing the relationship between the support, the heat exchanger, and the radiation resistance sheet. Figure 10 is a drawing showing the relationship between the radiation resistance sheet and the heat exchanger. See Figures 9 and 10.

[0172] The following may be optional. The support (30) may be provided as a first support (34a) on the upper side and a second support (34b) on the lower side. The first and second supports may be fastened. A radiation resistance sheet may be provided between the first and second supports. A hole through which a bar (31) passes may be provided in the radiation resistance sheet. The support may be provided by fastening a unit body (341). At least a portion of the radiation resistance sheet may be removed where the heat exchanger passes. At least a portion of the radiation resistance sheet may not be removed where the heat exchanger passes. The heat exchanger (57) and the radiation resistance sheet (32) may not be in contact. This can reduce thermal conductivity and increase the insulation effect. The radiation resistance sheet (32) may be provided as a single sheet. If the above-mentioned grid-type support is not present, the heat exchanger can be placed after inserting the radiation resistance sheet. This is because the installation location of the heat exchanger is unknown. An example of a case without the above-mentioned grid-type support is a case in which a porous material is present. If the above-mentioned grid-type support is present, the order in which the radiation resistance sheet and the heat exchanger are placed may be irrelevant. This is because the installation location of the heat exchanger can be known through the support.

[0173] Figures 11 and 12 are drawings showing that the copy resistance sheet is provided in multiple sheets. See Figures 11 and 12.

[0174] The above-described radiation resistance sheet (32) may be provided as a plurality of sheets (32a to 32j). The following may be optional. The plurality of sheets may not be in direct contact with each other. The relative positions of the plurality of sheets may be fixed by a bar (31), etc. The plurality of sheets may be arranged on the same plane. A boundary area (349) may be provided between the plurality of sheets. The heat exchanger may be arranged in at least a part of the boundary area. The heat exchanger may not be arranged in at least a part of the boundary area. The boundary areas may be spaced apart by a predetermined interval (w). Thermal conduction between the sheets may be shielded by the boundary areas. At least one boundary area (349) may be provided in at least one of the horizontal direction and the vertical direction. At least two boundary areas (349) may be provided in both the horizontal direction and the vertical direction. The above boundary region (349) may have a width (w1) in the horizontal direction smaller than a width (w2) in the vertical direction. This can further shield heat transfer in the horizontal direction. The area where the heat exchanger is placed in the boundary region may have a large width. This can suppress heat transfer between the heat exchanger and the radiation resistance sheet. A removal portion (341) may be provided on any one of the plurality of sheets. The removal portion (341) may be provided by cutting out any part of the sheet. At least a part of the heat exchanger may be placed on the removal portion. At least some of the plurality of sheets may be provided in a rectangular shape.

[0175] Fig. 13 is a drawing showing at least two radiation resistance sheets arranged in the height direction of a vacuum space. See Fig. 13.

[0176] As shown in Fig. 13(a), the radiation resistance sheets may be arranged in the same manner in the height direction of the vacuum space. In other words, the plurality of sheets may be arranged so as to have the same boundary area (349) and / or removal area (341) even though they are in different layers. Accordingly, an area where thermal radiation occurs directly through the first and second plates may be generated. The first and second supports may be provided to intersect each other.

[0177] As shown in Fig. 13(b), the radiation resistance sheets may be arranged in different ways in the height direction of the vacuum space. In other words, if the plurality of sheets have different layers, they may be arranged so that the boundary region (349) and / or the removal portion (341) run. Accordingly, at least one radiation resistance sheet may be interposed between the first and second plates. This may reduce the amount of thermal radiation transfer between the first and second plates. Fig. 13(a) and Fig. 13(b) may be implemented together.

[0178] The discharge pipe (651) of the heat exchanger has a low temperature. The suction pipe (652) of the heat exchanger has a high temperature. The temperature difference of the heat exchanger may increase heat transfer with the outside. Condensation may occur on the plate adjacent to the discharge pipe. The condensation has a large effect in an area where the radiation resistance sheet is not provided. The condensation may be significantly observed in the boundary area and the removal section. An anti-condensation mechanism may be provided on the second plate (20) adjacent to the path along which the heat exchanger (57) proceeds. The following contents may be selectively applied. As the anti-condensation mechanism, at least one of an insulating material provided on the outer surface or inner surface of the second plate, a heater or heat pipe or surface heating device provided on the outer surface or inner surface of the second plate, and a heat diffusion plate provided on the outer surface or inner surface of the second plate may be applied. The above heat diffusion plate can quickly diffuse the cold air from the discharge pipe along the extension direction of the second plate. Accordingly, the temperature of the second plate can be prevented from dropping below the dew point. The intensity of the above dew-prevention mechanism can be adjusted according to the temperature of the discharge pipe. For example, the intensity of the heater can be increased as it gets closer to the first stage (65a) adjacent to the evaporator. The intensity of the heater can be decreased as it goes from the first stage to the second stage. The above dew-prevention mechanism can be made to operate only when the external humidity is high. Fig. 14 shows a case where the dew-prevention mechanism (348) is provided on the outer surface of the second plate.

[0179] The discharge pipe (651) of the heat exchanger has a low temperature. The suction pipe (652) of the heat exchanger has a high temperature. The temperature difference of the heat exchanger may increase heat transfer with the outside. This heat transfer is undesirable because it increases irreversibility. In the heat exchanger (57), it is desirable to ensure that heat transfer occurs only in the heat exchanger as much as possible. To this end, a radiation shield (571) may be installed on the outer periphery of the heat exchanger.

[0180] Fig. 15 is a cross-sectional view of a heat exchanger provided with a radiation shield and a cross-sectional view of the radiation shield. Fig. 16 is a cross-sectional view of a radiation shield according to another embodiment. Fig. 17 is a perspective view and an end view of the radiation shield. See Figs. 15 to 17.

[0181] The following contents may be applied selectively. The radiation shielding film (571) may surround the heat exchanger (57) in a closed curve. At least a portion of the radiation shielding film may be provided in a circular shape. At least a portion of the radiation shielding film may be spaced apart from the heat exchanger. At least a portion of the radiation shielding film may have an inner circumference shape corresponding to the outer circumference of the heat exchanger. The multiple shielding films may be provided as a tube. The radiation shielding film (571) may be provided in a configuration in which a resin layer (571b) and a reflective layer (571a) are laminated. The resin layer may be made of LLDPE (Linear low-density polyethylene). The resin layer may be provided in a structure in which aluminum is deposited on both sides. The reflective layer may be exemplified by a low-emissivity aluminum sheet, a nickel-plated sheet, and an aluminum-deposited sheet. The cold air of the heat exchanger and the warm air of the heat exchanger may not be radiated to the outside. The heat exchange efficiency of the above heat exchanger can be increased. The formation of condensation on the outer surface of the second plate can be prevented by the radiation shielding film. The radiation shielding film (571) can shield the contact portion of the two pipes. The radiation shielding film (571) can be closer to the contact portion of the two pipes. The radiation shielding film (571) can provide a greater radiation shielding effect at the contact portion of the two pipes. The radiation shielding film (571) can be provided at the contact portion of the two pipes. This is because heat radiation is large at the contact portion of the two pipes. The contact portion of the two pipes can be joined by brazing. The radiation resistance sheet may or may not be provided together with the multiple shielding films (571).

[0182] Figure 18 specifically illustrates a method for blocking heat transfer in the heat exchanger. Figure 18(a) illustrates an embodiment in which a radiation shielding plate is added. Figure 18(b) illustrates an embodiment in which insulation is added. See Figure 18.

[0183] A radiation shield (347) may be provided adjacent to the heat exchanger. The following may be selectively applied. The radiation shield may correspond to the boundary area (349) and / or the removal portion (341). The radiation shield (347) may be fixed at a position adjacent to the support plate (35). The radiation shield (347) may be provided on at least one of the first and second support plates. The left-right movement of the radiation shield may be stopped by the bar (31). The radiation shield may be stopped from moving up and down by a spacer (346). At least a portion of the spacer (346) may be fitted into the radiation resistance sheet (32). The spacer (346) may be supported by the radiation resistance sheet. The above spacing member (346) may not be supported by the bar (31). The spacing member (346) may be in contact with the radiation shielding film (347). The spacing member (346) may be extended in the vertical direction of the vacuum space. The spacing member (346) may prevent the radiation shielding film (347) and the radiation resistance sheet (32) from moving.

[0184] An insulation material (348) may be provided adjacent to the heat exchanger. The following may be selectively applied. The insulation material may correspond to the boundary area (349) and / or the removal portion (341). The boundary area (349) and the removal portion (341) may be collectively referred to as a removal area. The insulation material (348) may be fixed at a position adjacent to the support plate (35). The insulation material (348) may be provided on at least one of the first and second support plates. The insulation material may be provided in a location where there is no support plate. The insulation material may be provided in a gap between units forming the supporter. The insulation material may be in contact with the inner surface of either the first or second plate. The insulation material (348) and the radiation shielding film (347) may be applied together. The left-right movement of the insulation material may be stopped by the supporter (31). The distance between the insulating material and any one of the first and second plates (10) (20) adjacent to the insulating material may be shorter than the distance between the insulating material and the heat exchanger. Accordingly, the influence of radiant heat on the first and second plates may be reduced. At least one of the spacing member (346) and the bar (31) may be applied to secure the insulating material. The insulating material may be made of a material including PPS with low outgassing.

[0185] Figure 19 illustrates various embodiments of blocking radiation heat from a heat exchanger. Figure 19(a) illustrates a heat exchanger with a radiation shield and a radiation resistance sheet. Figures 19(b) and 19(c) illustrate a heat exchanger with a radiation resistance sheet. See Figure 19.

[0186] A radiation shielding film (571) may be provided on the outside of the heat exchanger (57). The following may be optionally applied. The radiation shielding film (571) may surround the heat exchanger (57) in a closed curve. At least a portion of the radiation shielding film may be provided in a circular shape. At least a portion of the radiation shielding film may be spaced apart from the heat exchanger. The multiple shielding films may be provided in the form of a tube. The radiation shielding film (571) may be provided in a configuration in which a resin layer and a reflective layer are laminated. The resin layer may be made of LLDPE (Linear low-density polyethylene). The resin layer may be provided in a structure in which aluminum is deposited on both sides. The reflective layer may be, for example, a low-emissivity aluminum sheet, a nickel-plated sheet, or an aluminum-deposited sheet. The cold air of the heat exchanger and the warm air of the heat exchanger may not be radiated to the outside except for heat exchange. The heat exchange efficiency of the heat exchanger may be increased. The formation of dew on the outer surface of the second plate can be prevented by the above-mentioned radiation shielding film.

[0187] A radiation resistance sheet (32) may be provided on the outside of the heat exchanger (57). The following may be selectively applied. The radiation resistance sheet (32) may be provided on at least one of the upper and lower sides of the heat exchanger. The radiation resistance sheet (32) may be provided in a form that accommodates the heat exchanger (57) therein. The radiation resistance sheet (32) may be provided with a deformation portion (32a) (32b). The deformation portion may accommodate the heat exchanger. At least a portion of the deformation portion may not contact the heat exchanger. At least a portion of the deformation portion may not contact the radiation shield. The distance between the deformation portion (32a) and the support plate (35) may be closer than the distance between the deformation portion and the heat exchanger. This can reduce radiant heat transfer. For this purpose, when the above-mentioned radiation resistance sheet is provided vertically, the deformation portion (32a) (32b) may be provided in a mirror shape. The distance (w) between the above-mentioned radiation resistance sheet (32b) and the support plate may be longer than the distance between the above-mentioned radiation resistance sheet and the heat exchanger. As a result, the radiation resistance sheet can smoothly support the heat exchanger. The above-mentioned radiation resistance sheet can support the heat exchanger. For this purpose, the above-mentioned radiation resistance sheet may be in direct or indirect contact with the heat exchanger. The above-mentioned deformation portion may be provided flat.

[0188] At least one of the gap support between the at least two of the radiation resistance sheets (32-1)(32-2), the gap support between the radiation resistance sheets and the support plate, and the support function of the radiation resistance sheet for the heat exchanger can be smoothly performed. To this end, the radiation resistance sheet can be supported on a bar. A gap block (311) can be provided on the bar. The gap block can be fitted to the bar as a separate member. At least one end of the gap block can be in contact with the radiation resistance sheet. A protrusion (312) can be provided on the bar (31). At least one end of the protrusion can be in contact with the radiation resistance sheet. The gap block and the protrusion can prevent the radiation resistance sheet from moving in the thickness direction of the vacuum space. The deformation portion (32a)(32b) can be in contact with the support plate (35). The deformation portion can be provided flat. Through this, the above-mentioned radiation resistance sheet can be supported over a wide area. The above-mentioned radiation resistance sheet can be supported more stably.

[0189] Figure 20 illustrates a case where a gap block is placed between a radiation resistance sheet and a heat exchanger. Figure 20(a) illustrates a case where the gap block is generally circular. Figure 20(b) illustrates a case where the gap block is generally rectangular. See Figure 20.

[0190] At least a portion between the radiation resistance sheet and the heat exchanger may be spaced apart from each other. The following may be optionally applied. The entire space between the radiation resistance sheet and the heat exchanger may be spaced apart. The gap between the radiation resistance sheet and the heat exchanger may be supported by a gap block. The gap block (313)(314) may use a material with low outgassing. The gap block may use ceramic or resin. The resin may use PPS. The gap block may prevent direct contact between the heat exchanger and the radiation resistance sheet. The gap block may use a material with high insulation performance. A radiation shielding film (571) may be interposed between the heat exchanger and the gap block. It is preferable that the areas of the contact surface between the radiation resistance sheet and the gap block, the contact surface between the gap block and the heat exchanger, and the contact surface between the gap block and the radiation shield be small. At least one of the contact surface between the radiation resistance sheet and the gap block, the contact surface between the gap block and the heat exchanger, and the contact surface between the gap block and the radiation shielding film may have a rib or the like interposed therebetween to form line contact. At least one of the contact surface between the radiation resistance sheet and the gap block, the contact surface between the gap block and the heat exchanger, and the contact surface between the gap block and the radiation shielding film may have a protrusion or the like interposed therebetween to form point contact. The gap block may be provided in a closed-curve cross-section. This can enhance the insulation performance. The gap block may be provided in an open-curve cross-section. The gap block (341) may be provided with a mouth (315). This can enable the heat exchanger to be easily inserted into the gap block. At least a portion of the outer shape of the gap block and the inner shape of the deformable portion can coincide with each other. This can enable the gap block to be easily positioned.

[0191] Figure 21 is a drawing illustrating a case where insulation is provided. Figure 21(a) shows a case where only insulation is provided. Figure 21(b) shows a case where insulation and a deformation portion are provided. See Figure 21.

[0192] An insulation material (347) may be provided adjacent to the heat exchanger. The following may be optionally applied. The insulation material (347) may be fixed at a position adjacent to the support plate (35). The insulation material (347) may contact at least one of the first and second support plates. The insulation material (347) may be closer to the plate (10) (20) than to the heat exchanger. The insulation material may be provided in a location where there is no support plate. The insulation material may be provided in a gap between units forming the supporter. The insulation material may be in contact with the inner surface of any one of the first and second plates. The distance between the insulation material and any one of the first and second plates (10) (20) adjacent to the insulation material may be shorter than the distance between the insulation material and the heat exchanger. Accordingly, the influence of radiant heat on the first and second plates can be reduced. The above insulation material may use a material including PPS with low outgassing. The lengths of the removal portions from which the radiation resistance sheets are removed in at least two of the radiation resistance sheets (32-1)(32-2) may be different from each other. The cut length of the first radiation resistance sheet (32-1) may be shorter than the cut length of the second radiation resistance sheet (32-2). The heat exchanger may be closer to the second radiation resistance sheet (32-2). This is because the degree of interference with the heat exchanger may vary for each radiation resistance sheet. The above deformation portion (32a)(32b) may be further provided. The deformation portion may be closer to the plate than to the heat exchanger. Radiation heat may be more strictly blocked by the deformation portion.

[0193] Figure 22 is a diagram showing various embodiments of a radiation resistance sheet. Figure 22(a) shows a case where a relatively large deformation portion is provided. Figure 22(b) shows a case where a deformation portion is formed only on one side. Figure 22(c) shows a case where only one side of the radiation resistance sheet is opened. See Figure 22.

[0194] The following items can be applied selectively. The width of the deformation portion (32a) (32b) can be provided to be greater than one time the spacing between the bars (31). The width of the deformation portion (32a) (32b) can be provided to be greater than twice the spacing between the bars (31). As the deformation portion increases, the shape of the deformation portion can be easily processed. A press can be applied as a processing method. As the deformation portion increases, the deformation strength of the radiation resistance sheet can be increased. As the deformation portion increases, the strong deformation portion can be formed more easily. The deformation portion can be provided on at least one of the at least two radiation resistance sheets (32-1) (32-2). Accordingly, the concern about heat conduction that may occur when the deformation portion comes into contact with the support plate or the first and second plates can be reduced. The deformation portion (32b) can be provided only when necessary for supporting a heat exchanger, etc. An opening (341) (349) may be provided in at least one of the at least two radiation resistance sheets (32-1) (32-2). The opening may be provided at a location where the heat exchanger and the radiation resistance sheet interfere. Accordingly, an increase in the amount of radiation heat transfer between the heat exchanger and the first and second plates may be prevented. The opening may include a gap (341) of the sheet itself, or a portion (349) where the sheet is cut.

[0195] According to the present invention, the heat exchanger can be conveniently installed inside the vacuum space.

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; A heat transfer resistor provided in at least one of the spaces inside the vacuum space and adjacent to the first and second plates to reduce heat transfer between the first plate and the second plate; and A vacuum insulator including a tube having a portion disposed in the above vacuum space.

2. In paragraph 1, The above heat transfer resistance body is a vacuum insulation body including a radiation shielding film formed to surround at least a portion of the tube.

3. In paragraph 2, The cross-section of the above radiation shield is a vacuum insulator provided as a closed curve.

4. In paragraph 2, The above radiation shielding film is a vacuum insulation material provided with a resin layer and two reflective layers.

5. In paragraph 2, The above-mentioned radiation shielding film is a vacuum insulator including a portion in contact with the tube.

6. In paragraph 1, The above heat transfer resistance body is a vacuum insulation body including a radiation resistance sheet having a void space or a removal portion for providing a space in which at least a portion of the tube is placed.

7. In paragraph 1, The above heat transfer resistor includes a first heat transfer resistor and a second heat transfer resistor provided spaced apart from the first heat transfer resistor, The above tube is a vacuum insulator including a first heat transfer resistor and a portion disposed in a void space formed apart from the first heat transfer resistor.

8. In paragraph 1, The above heat transfer resistance body is a vacuum insulation body including a radiation resistance sheet having a portion provided so as not to come into contact with the tube.

9. In paragraph 1, A vacuum insulator in which the heat transfer resistor includes a radiation resistance sheet that reduces radiation heat transfer between the first plate and the second plate, and at least one of an insulating material and a radiation shielding film is arranged in a removal area where the radiation resistance sheet is not provided.

10. In paragraph 9, A vacuum insulator, wherein the distance between at least one of the insulating material and the radiation shielding film and one of the first and second plates adjacent to the insulating material and the radiation shielding film is shorter than the distance between at least one of the insulating material and the radiation shielding film and the tube.

11. In paragraph 9, A vacuum insulator further comprising a spacing member that is supported by the above-mentioned radiation resistance sheet and maintains the spacing of the above-mentioned radiation resistance sheet, and at least one of the above-mentioned insulating material and the above-mentioned radiation shielding film is in contact with an end of the spacing member.

12. In paragraph 1, A vacuum insulator comprising: a radiation resistance sheet for reducing radiation heat transfer between the first plate and the second plate; and a spacer member supported on the radiation resistance sheet to maintain a predetermined space in the thickness direction or height direction of the vacuum space; and at least a portion of the spacer member being fitted into the radiation resistance sheet.

13. In paragraph 1, A vacuum insulator comprising a radiation resistance sheet that reduces radiation heat transfer between the first plate and the second plate, and a deformation portion formed in the radiation resistance sheet so as to accommodate the tube.

14. In paragraph 13, A vacuum insulator including a supporter that maintains the gap of the above vacuum space, and the deformation part being in contact with the supporter.

15. In paragraph 13, A supporter is included to maintain the gap of the above vacuum space, and the support includes a support plate and a bar extending from the support plate toward the vacuum space. A vacuum insulator in which the distance between the above-mentioned deformation part and the above-mentioned support plate is shorter than the distance between the above-mentioned deformation part and the above-mentioned pipe.

16. In paragraph 13, The above-mentioned radiation resistance sheet includes at least two radiation resistance sheets spaced apart from each other above and below the tube, A vacuum insulator in which at least one of the at least two radiation resistance sheets has no deformation portion, or in which at least one of the at least two radiation resistance sheets is open.

17. In paragraph 1, A vacuum insulator comprising a heat transfer resistance sheet that reduces heat transfer between the first plate and the second plate, and a gap block that is provided between the heat transfer resistance sheet and the tube to separate at least a portion of the tube and the heat transfer resistance sheet.

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