KR20220059310A - Vacuum adiabatic body - Google Patents

Abstract

A vacuum adiabatic body of the present invention can include: a first plate; a second plate; and a sealing part sealing the first and second plates to provide a vacuum space part. Optionally, the vacuum adiabatic body can include a supporter for maintaining the vacuum space part. Optionally, the vacuum adiabatic body can include a thermal insulator for reducing a heat transfer quantity between the first plate and the second plate. Optionally, the vacuum adiabatic body can include a component coupling part connected with at least one of the first and second plates to be combined with a component. Optionally, the vacuum adiabatic body can include a side plate extended in a height direction of the vacuum space part. Accordingly, the vacuum adiabatic body for achieving an industrial purpose can be provided.

Description

Vacuum insulator {Vacuum adiabatic body}

The present invention relates to a vacuum insulator.

The insulation performance can be improved by constructing an insulation wall with vacuum. At least a part of the inner space is made of vacuum, and a device for forming a thermal insulation effect may be referred to as a vacuum insulator.

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 in Korean Application No. 10-2015-0109724. The vacuum insulator of the above cited document presents a peripheral insulation material placed on the periphery of the vacuum insulator.

The above document does not disclose any parts, such as a latch, which are necessary to be installed in a refrigerator.

Republic of Korea Application No. 10-2015-0109724, vacuum insulator

The present invention is to solve the above problems, and proposes a mounting structure of parts such as a latch necessary for the operation of a vacuum insulator.

The present invention proposes a vacuum insulator in which parts are reliably mounted without reducing the insulating performance of the vacuum space part.

The present invention proposes a vacuum insulator with high impact resistance.

The vacuum insulator of the present invention, the first plate; second plate; It may include a sealing part sealing the first plate and the second plate to provide a vacuum space part. Optionally, it may include a supporter for maintaining the vacuum space. Optionally, a heat transfer resistor for reducing the amount of heat transfer between the first plate and the second plate may be included. Optionally, it may include a part fastening part connected to at least one of the first and second plates to which the parts are coupled. Optionally, it may include at least one of side plates extending in the height direction of the vacuum space portion. Accordingly, it is possible to provide a vacuum insulator that can achieve the industrial purpose.

Optionally, it may be installed adjacent to any one side of the first and second plates. Optionally, a hinge that allows a rotation operation may be included. Optionally, in the vacuum space part, a first side on which the hinge is installed may extend further in a longitudinal direction of the vacuum space part than a second side facing the first side. According to this configuration, it is possible to reinforce the thermal insulation performance of the first side, which is inferior in thermal insulation performance.

Optionally, a gasket may be installed on the first plate. Optionally, when providing an imaginary line extending in the height direction of the vacuum space at the end of the gasket, the first side of the vacuum space may extend beyond the imaginary line. Accordingly, it is possible to reinforce the thermal insulation performance of the first side.

Optionally, the edge of the side plate may extend beyond the imaginary line at the first side. Optionally, an edge of the radiation resistance sheet may extend beyond the virtual line toward the first side. Optionally, in the outermost bar, the first side may lie beyond the two imaginary lines. According to the above configuration, it is possible to reinforce the thermal insulation performance of the first side.

Optionally, in the outermost bar, the two virtual lines L1 and L2 may not lie in an area. According to this configuration, the strength of the vacuum insulator can be reinforced.

Optionally, the edge of the side plate may be placed further from the center toward the periphery of the vacuum insulator on the first side than on the second side.

Optionally, the heat transfer resistor may include a radiation resistance sheet that resists heat radiation between the first and second plates. Optionally, the edge of the radiation resistance sheet may be placed further from the center toward the periphery of the vacuum insulator with the first side facing the second side than the second side.

Optionally, the outermost bar among the supporters may be placed further from the center toward the periphery of the vacuum insulator on the first side than on the second side.

The heat insulation performance of the first side side can be reinforced even by the above-described configuration. In addition, it is possible to reinforce the strength of the vacuum insulator from the first side.

According to the present invention, according to the present invention, it is possible to increase the force to withstand the impact inevitably generated due to the use of the vacuum insulator.

According to the present invention, a component such as a latch can be installed in an additional insulator, and deterioration of thermal insulation performance occurring in the component can be prevented.

According to the present invention, the amount of impact generated by the latch or the like can be smoothly absorbed.

According to the present invention, the productivity of the vacuum insulator is improved, and it is possible to provide a vacuum insulator that can be industrially applied.

According to the present invention, it is possible to balance the thermal insulation performance on two opposite sides of the vacuum insulator, and increase the strength of the vacuum insulator.

1 is a perspective view of a refrigerator according to an embodiment;
2 is a view schematically showing a vacuum insulator used for a main body and a door of a refrigerator;
3 is a view showing an embodiment of a support for holding a vacuum space portion.
4 is a view for explaining an embodiment of a vacuum insulator centering on a heat transfer resistor.
5 is a view for explaining the vacuum pressure inside the vacuum space.
6 is a graph for observing the process of evacuating the inside of the vacuum insulator with time and pressure when a support is used.
7 is a graph comparing vacuum pressure and gas conductivity.
8 is a view showing various embodiments of a vacuum space unit.
9 is a view for explaining a conductive resistance sheet placed on a heat transfer path.
10 is a view for explaining a heat transfer path between first and second plates having different temperatures;
11 is a view for explaining a branching portion on a heat transfer path between first and second plates having different temperatures;
12 is a perspective view and a partial cross-sectional view of a vacuum insulator, in which FIG. 12 (a) is a vacuum insulator with a lower left side and an upper right side, and FIG. 12 (b) is 1-1' of FIG. 12 (a). It is a cross-sectional perspective view, and FIG. 12(c) is a cross-sectional view of 1-1'.
13 is a perspective view and a cross-sectional view illustrating a cross section of 2-2' of FIG. 12(a), (a) is a cross-sectional perspective view, (b) is a cross-sectional view.
14 to 16 are views related to a cross-section taken along line 3-3' of FIG. 12(a), FIG. 14 is a cross-sectional view taken along line 3-3' of FIG. 12(a), and FIG. It is an enlarged cross-sectional view, and FIG. 16 is a cross-sectional perspective view.
17 and 18 are views showing an embodiment of the flange, and are views for explaining an embodiment in which the extension direction of the flange and the position of the flange are different.
19 is a view comparing the peripheral portions of both sides of the vacuum insulator.
Fig. 20 is a view for explaining a configuration related to a latch and a hinge;
21 is a view for explaining a hinge shaft cover and a hinge case on which the hinge shaft is placed.
22 is a view showing a state in which the hinge is installed in the hinge case.

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 may add other embodiments included within the scope of the same spirit to components or components, Changes, deletions, and additions may be easily suggested, but this will also be included within the scope of the present invention. The present invention may have many embodiments in which the idea is implemented, and in each embodiment, any part may be replaced with a corresponding part or a part having a related action in another embodiment. The present invention may be any one of the examples presented below or an example in which two or more are combined.

The present invention, the first plate; second plate; a vacuum space formed between the first and second plates; It may be a vacuum adiabatic body including a seal for providing the vacuum space (vacuum space). The vacuum space part may be a space in a vacuum state provided in the inner space between the first plate and the second plate. The sealing part may seal the first plate and the second plate to provide an 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 expression plate may mean at least one of the first and second plates and the side plate. At least a portion of the first and second plates and the side plate may be integrally formed, or at least a portion may be sealed with each other. Optionally, the vacuum insulator may include a support for maintaining the vacuum space portion. The vacuum insulator selectively reduces the amount of heat transfer between the first space provided in the vicinity of the first plate and the second space provided in the vicinity of the second plate, or between the first plate and the second plate. A thermal insulator may be included to reduce the amount of heat transfer. Optionally, the vacuum insulator may include a fastening part formed on at least a portion of the plate. Optionally, the vacuum insulator may include another adiabatic body. The additional insulator may be provided to be connected to the vacuum insulator. The additional heat insulator may be a heat insulator having the same or a different degree of vacuum as the vacuum insulator. The additional heat insulator may be a heat insulator that does not include a vacuum level or lower than that of the vacuum insulator or a part in a vacuum state therein. In this case, it may be advantageous to connect another object to the additional thermal insulator.

In the present invention, the direction along the wall defining the vacuum space may include a longitudinal direction of the vacuum space and a height direction of the vacuum space. A height direction of the vacuum space portion may be defined as any one direction among virtual lines connecting a first space and a second space to be described later while penetrating the vacuum space portion. The longitudinal direction of the vacuum space portion may be defined as a direction perpendicular to the set height direction of the vacuum space portion. In the present invention, that the object A is connected to the object B means that at least a part of the object A and at least a part of the object B are directly connected, or at least a part of the object A and at least a part of the object B are connected to the objects A and B It can be defined as being connected through an intermediate. The medium may be provided to at least one of object A and object B. The connection may include that the object A is connected to the medium, and the medium is connected to the object B. A part of the medium may include a part connected to either one of object A and object B. The other part of the medium may include a part connected to the other of the object A and the object B. As a variant, the connection of the object A to the object B may include that the object A and the object B are integrally prepared in a shape connected in the above-described manner. In the present invention, an embodiment of the connection may be a support, a combination, or a seal, which will be described later. In the present invention, that object A is supported by object B means that object A is supported by object B in one or more of +X, -X, +Y, -Y, +Z, and -Z axis directions. It can be defined that movement is restricted. In the present invention, an embodiment of the support may be a coupling or sealing, which will be described later. In the present invention, that the object A is coupled to the object B may define that the object A is restricted from moving by the object B in one or more of the X, Y, and Z-axis directions. In the present invention, an embodiment of the coupling may be a sealing to be described later. In the present invention, that the object A is sealed to the object B may define a state in which the movement of the fluid is not allowed in the portion where the object A and the object B are connected. In the present invention, one or more objects, i.e., object A and at least a portion of object B, include a portion of object A, all of object A, a portion of object B, all of object B, a portion of object A and a portion of object B; It can be defined as including part of object A and all of object B, all of object A and part of object B, and all of object A and all of object B. In the present invention, that the plate A may be a wall defining the space A may be defined as that at least a part of the plate A may be a wall defining at least a part of the space A. That is, at least a part of the plate A may be a wall forming the space A, or the plate A may be a wall forming at least a part of the space A. In the present invention, when the object is divided into three equal parts based on the longitudinal direction of the object, the central portion of the object may be defined as a central portion among the three divided portions. The peripheral portion of the object may be defined as a portion located to the left or right of the central portion among the three divided portions. The peripheral portion of the object may include a surface in contact with the central portion and a surface opposite thereto. The opposite side may be defined as a border or edge of the object. Examples of the object may be a vacuum insulator, a plate, a heat transfer resistor, a support, a vacuum space, and various parts to be introduced in the present invention. In the present invention, the degree of heat transfer resistance (Degree of heat transfer resistance) indicates the degree to which an object resists heat transfer, and can be defined as a value determined by the shape including the thickness of the object, the material of the object, and the processing method of the object. can The heat transfer resistance may be defined as the sum of a degree of conduction resistance, a degree of radiation resistance, and a degree of convection resistance. It may include a heat transfer path formed between spaces with different temperatures, or a heat transfer path formed between plates having different temperatures.For example, the vacuum insulator of the present invention provides It may include a heat transfer path through which cold is transferred toward the high plate In the present invention, the curved portion includes a first portion in which the object extends in a first direction and a second portion in which the object is different from the first direction. When a second portion extending in the direction is included, it may be defined as a portion connecting the first portion and the second portion (including 90 degrees).

In the present invention, the vacuum insulator may optionally include a fastening part. The part fastening part may be defined as a part provided on the plate to which parts are connected. The part connected to the plate may be defined as a penetrating part disposed to penetrate at least a part of the plate and a surface part disposed to be connected to the surface of at least a part of the plate. At least one of a penetrating part and a surface part may be connected to the part fastening part. The penetrating part may be a part that mainly forms a path through which a fluid (electricity, refrigerant, water, air, etc.) passes. In the present invention, a fluid is defined as any kind of flowing body. The fluid includes moving solids, liquids and 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 a Suction Line Heat Exchanger (SLHX) or a refrigerant pipe. The component may be a wire that supplies electricity to the device (Apparatus). As another example, the component may be a component that forms a path through which air can 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 parts include peripheral insulation, side panels, foam injected, pre-prepared resin, hinges, latches, baskets, drawers, shelves, lights, sensors, evaporators, front decorations, and hotlines, heaters, exterior covers, additional insulation may include at least one of

As an example to which the vacuum insulator is applied, the present invention may include an apparatus having the vacuum insulator. An example of the device is an appliance. As an example of the appliance, a home appliance including a refrigerator, a cooking appliance, a washing machine, a dishwasher, and an air conditioner, etc. can be heard As an example in which the vacuum insulator is applied to a device, the vacuum insulator may form at least a portion of a body and a door of the device. As an example of the door, the vacuum insulator may form at least a portion of a general door and a door-in-door (DID) in direct contact with the body. Here, the door-in-door may mean a small door placed inside the general door. As another example to which the vacuum insulator is applied, the present invention may include a wall having the vacuum insulator. An example of the wall may be a wall of a building including a window.

Hereinafter, the present invention will be described in detail with reference to the drawings. Each drawing accompanying the embodiment may be different from, exaggerated, or simply indicated from the actual article, and detailed parts may be briefly indicated with features. The embodiment should not be interpreted as being limited only to the size, structure, and shape presented in the drawings. In the embodiments accompanying each drawing, some configurations of the drawings of one embodiment may be applied to some configurations of the drawings of other embodiments, and some structures of certain embodiments may be applied to some structures of other embodiments, provided that the descriptions do not conflict with each other. can In the description of the drawings for the embodiment, the same reference numerals may be assigned to different drawings as reference numerals of specific components constituting the embodiment. Components having the same reference number may perform the same function. For example, the first plate constituting the vacuum insulator has a portion corresponding to the first space throughout all embodiments, and is indicated by reference numeral 10. The first plate may have the same number for all embodiments and may have a portion corresponding to the first space, but the shape of the first plate may be different in each embodiment. Not only the first plate, but also the side plate, the second plate, and an additional thermal insulator can be understood as well.

1 is a perspective view of a refrigerator according to an embodiment, and FIG. 2 is a diagram schematically illustrating a vacuum insulator used for a main body and a door of the refrigerator. Referring to FIG. 1 , a refrigerator 1 includes a main body 2 provided with a cavity 9 for storing stored items, and a door 3 provided to open and close the main body 2 . The door 3 is rotatably or slidably disposed to open and close the cavity 9 . The cavity 9 may provide at least one of a refrigerating compartment and a freezing compartment. A cold source for supplying cold air to the cavity may be provided. For example, the cooling source may be an evaporator 7 that evaporates a refrigerant to take heat. The evaporator 7 may be connected to a compressor 4 that compresses the refrigerant evaporated to the cooling source. The evaporator 7 may be connected to a condenser 5 condensing the compressed refrigerant to the cooling source. The evaporator 7 may be connected to an expander 6 that expands the refrigerant condensed in the cooling source. A fan corresponding to the evaporator and the condenser may be provided to promote heat exchange. As another example, the cooling source may be a heat absorbing surface of the thermoelectric element. A heat absorbing sink may be connected to the heat absorbing surface of the thermoelectric element. A heat sink may be connected to a heat radiation surface of the thermoelectric element. A fan corresponding to the heat absorbing surface and the heat generating surface may be provided to promote heat exchange.

Referring to FIG. 2 , the plates 10 , 15 , and 20 may be walls defining the vacuum space. The plate may be a wall dividing the vacuum space and an external space of the vacuum space. An example of the plate is as follows. The present invention may be any one of the following examples, or an example in which two or more are combined.

The plate may be provided as one part or may be provided to include at least two parts connected to each other. As a first example, the plate may include at least two parts connected to each other in a direction along a wall defining the vacuum space. Any one of the two parts may include a part (eg, the first part) forming the vacuum space part. The first part may be a single part or may include at least two parts that are sealed to each other. The other one of the two parts may include a part (eg, a second part) extending from the first part of the first plate in a direction away from the vacuum space part or extending in an inner direction of the vacuum space part. . As a second example, the plate may include at least two layers connected to each other in a thickness direction of the plate. Any one of the two layers may include a layer (eg, the first portion) forming the vacuum space portion. The other one of the two layers may include a portion (eg, a second portion) provided in an external space (eg, the first space and the second space) of the vacuum space unit. In this case, the second part may be defined as an outer cover of the plate. The other one of the two layers may include a portion (eg, a second portion) provided in the vacuum space portion. In this case, the second part may be defined as an inner cover of the plate.

The plate may include a first plate 10 and a second plate 20 . One surface of the first plate (“the inner surface of the first plate”) provides a wall defining the vacuum space portion, and the other surface of the first plate (“the outer surface of the first plate”) defines the first space wall can be provided. The first space may be a space provided in the vicinity of 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 the additional member form the inner space, the first plate and the additional member may be referred to as an inner case. The inner case may include two or more layers. In this case, one of the plurality of layers may be referred to as an inner panel. One surface of the second plate (“the inner surface of the second plate”) provides a wall defining the vacuum space, and the other surface of the second plate (“the outer surface of the second plate”) defines the second space. wall can be provided. 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 the additional member form the outer 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. 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 , the side plate may also perform the function of the conductive resistance sheet 60 to be described later, depending on the location of the side plate. The side plate may include a portion extending in the height direction of the space formed between the first plate and the second plate, or may include a portion extending in the height direction of the vacuum space portion. One surface of the side plate may provide a wall defining the vacuum space portion, and the other surface of the side plate may provide a wall defining an external space of the vacuum space portion. The outer space of the vacuum space part may be at least one of the first space and the second space, or a space in which an additional heat insulating material to be described later is disposed. The side plate may be integrally formed by extending at least one of the first plate and the second plate, or may be a separate component connected to at least one of the first plate and the second plate.

The plate may optionally include curved portions. In the present invention, a plate including a curved portion may be referred to as a bent plate. The curved portion may include 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. can be provided on The plate may include at least one of a first curved portion and a second curved portion, an example of which is as follows. 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 part of the first curved part may include a part connected to the second curved part. In this case, the radius of curvature of the first curved portion and the second curved portion may be large. Another portion of the first curved portion may be connected to an additional straight line portion or an additional curved portion provided between the first curved portion and the second curved portion. In this case, the curvature radius of the first curved portion and the second curved portion may be small. Second, the side plate may include the second curved part. 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 line portion or an additional curved portion provided between the first curved portion and the second curved portion. In this case, the curvature radius 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 greater radius of curvature than the curved portion. The straight part may be understood as a part having a greater radius of curvature than a perfect plane or curved part. 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. A portion connected to the side plate may be provided at a position away from the second plate in a portion in which the first plate extends in the longitudinal direction of the vacuum space portion. 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. A portion connected to the side plate may be provided at a position away from the first plate in a portion in which the second plate extends in the longitudinal direction of the vacuum space portion. 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.

In the present invention, the vacuum space 50 may be defined as a third space. The vacuum space may be a space in which vacuum pressure is maintained. In the present invention, the expression that A has a higher degree of vacuum than B means that the vacuum pressure of A is lower than that of B.

In the present invention, the sealing part 61 may be a portion provided between the first plate and the second plate. Examples of sealing are as follows. The present invention may be any one of the following examples, or a combination of two or more. The sealing may include fusion welding for joining the plurality of objects by melting at least a portion of the plurality of objects. For example, the first plate and the second plate are fused by laser welding or the like in a state where a medium is not interposed, or a medium such as a filler metal is interposed between a part of the first and second plates and a part of the part fastening part. It may be fused by high-frequency brazing or the like in the finished state, or fused by a medium (eg, a melting bond) in which the plurality of objects generate heat. The sealing may include pressure welding for joining the plurality of objects by mechanical pressure applied to at least a portion of the plurality of objects. For example, as a part connected to the part fastening part, an object made of a material having a lower degree of deformation resistance than the plate may be press-contacted by a method such as a pinch-off method.

A machine room 8 may be optionally provided on the outside of the vacuum insulator. The machine room may be defined as a space in which parts connected to the cooling source are accommodated. Optionally, the vacuum insulator may include a tube 40 . The tube may be provided on either side of the vacuum insulator to exhaust the air of the vacuum space unit 50 . Optionally, the vacuum insulator may include a conduit 64 penetrating the vacuum space 50 for installation of parts connected to the first space and the second space. Examples of the aforementioned tube may be ports such as exhaust ports or getter ports.

3 is a view showing an embodiment of a support for maintaining the vacuum space portion. An example of the support is as follows. The present invention may be any one of the following examples, or an example in which two or more are combined.

The supports 30 , 31 , 33 , and 35 are provided among the plate and a heat transfer resistor to be described later so as to reduce deformation of at least some of the vacuum space 50 , the plate, and a heat transfer resistor to be described later by an external force. It may be provided to support at least a portion. The external force includes at least one of a vacuum pressure and an external force excluding the vacuum pressure. When the deformation occurs in a direction in which the height of the vacuum space portion decreases, the support may reduce an increase in at least one of radiant heat conduction, gas heat conduction, surface heat conduction, and supporter heat conduction, which will be described later. The support may be an object provided to maintain a gap between the first plate and the second plate, or an object provided to support the heat transfer resistor. The support has a greater degree of strain resistance than the plate, or is provided in a portion having a weak degree of strain resistance among parts constituting the vacuum insulator, the device having the vacuum insulator, and the wall having the vacuum insulator. can In the present invention, the degree of deformation resistance indicates the degree to which an object resists deformation due to an external force applied to the object, and the shape including the thickness of the object, the material of the object, and the processing method of the object It can be defined as a value determined by Examples of the portion in which the strain resistance is weak may be a vicinity of a curved portion formed by the plate or at least a portion of the curved portion, a vicinity of an opening formed in a body of a device provided by the plate, or at least a portion of the opening. The support may be disposed to surround at least a portion of the curved portion or the opening or may be provided to correspond to the shape of the curved portion or the opening, but the support is not excluded from being provided on other portions. The opening may be understood as a part of a device including a body and a door capable of opening and closing the opening formed in the body.

An example in which the support is provided to support the plate is 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, and the support may be provided between the plurality of layers. Optionally, the support may be provided to connect with at least a portion of the plurality of layers or provided to support at least a portion of the plurality of layers. Second, at least a portion of the support may be provided to be connected to a surface formed on the outside of the plate. The support may be provided in the vacuum space part or in an external space of the vacuum space part. For example, the plate may include a plurality of layers, and the support may be provided in any one of the plurality of layers. Optionally, the support may be provided to support the other one of the plurality of layers. As another example, the plate may include a plurality of portions extending in the longitudinal direction, and the support may be provided by any one of the plurality of portions. Optionally, the support may be provided to support the other one of the plurality of parts. As another example, the support may be provided in the vacuum space part or an external space of the vacuum space part as a separate part from the plate. 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, and one surface of the first plate and one surface of the second plate may be provided to face each other. Third, the support may be provided integrally with the plate. An example in which the support is provided to support the heat transfer resistor may be understood instead of an example in which the support is provided to support the plate. A duplicate description will be omitted.

An example in which the support is designed to reduce heat transfer through the support is as follows. First, at least a portion of the parts disposed in the vicinity of the support may be provided so as not to come into contact with the support or may be provided to be disposed in an empty space provided by the support. Examples of the component include a heat transfer resistor, exhaust port, getter port, which will be described later, a tube or component connected to the plate, a tube or component passing through the vacuum space, a tube or component at least a part of which is disposed in the vacuum space, etc. can be Examples of the aforementioned tube may be ports such as exhaust ports or getter ports. Examples of the empty space may be an empty space provided inside the support, an empty space provided between a plurality of supports, and an empty space provided between a support and a separate component separated from the support. Optionally, at least a portion of the component may be disposed in a through hole formed in the support, disposed between a plurality of bars, disposed between a plurality of connecting plates, or disposed between a plurality of support plates. Optionally, at least a portion of the component may be disposed in a space spaced apart between the plurality of bars, in a space spaced apart between the plurality of connection plates, or in a space spaced apart between the plurality of support plates. Second, insulation may be provided on at least a portion of the support or in the vicinity of at least a portion of the support. The insulating material may be provided to be in contact with the support or provided not to be in contact with the support. The heat insulating material may be provided at a portion in which the support and the plate are in contact. The heat insulating material may be provided on at least a portion of one surface and the other surface of the support, or may be provided to cover at least a portion of one surface and the other surface of the support. The insulating material may be provided on at least a portion of the vicinity of one surface of the support and the vicinity of the other surface of the support, or may be provided to cover at least a portion of the vicinity of one surface of the support and the vicinity of the other surface of the support. The support may include a plurality of bars, and an insulating material may be disposed in a region from a point where any one of the plurality of bars is located to a midpoint between the one bar and surrounding bars. Third, when cold air is transmitted through the support, a heat source may be disposed at a location where the heat insulator described in the second example is disposed. When the temperature of the first space is lower than the temperature of the second space, the heat source may be disposed on the second plate or in the vicinity of the second plate. When heat is transmitted through the support, a cold source may be disposed at a location where the heat insulator described in the second example is disposed. When the temperature of the first space is higher than the temperature of the second space, the cooling source may be disposed on the second plate or in the vicinity of the second plate. As a fourth example, the support may include a portion having a higher heat transfer resistance than a metal or a higher heat transfer resistance than the plate. The support may include a portion having a lower heat transfer resistance than an additional adiabatic body. The support may include at least one of a non-metal material, PPS and glass fiber (GF), low outgassing PC, PPS, and LCP. The reason is that it is possible to obtain high compressive strength, low outgassing and water absorption rates, low thermal conductivity, high compressive strength at high temperatures, and excellent workability.

Examples of the support may be the bars 30 and 31 , the connection plate 35 , the support plate 35 , the porous material 33 , and the filler 33 . In the present invention, the support may include any one of the above examples, or an example in which at least two are combined. As a first example, the support may include bars 30 and 31 that extend in a direction connecting the first plate and the second plate in order to support a gap between the first plate and the second plate. It may contain parts. The bar may include a portion extending in the height direction of the vacuum space portion or may include a portion extending in a direction substantially perpendicular to the direction in which the plate extends. The bar may be provided to support only one of the first plate and the second plate, or the bar may be provided to support both the first plate and the second plate. For example, one surface of the bar may be provided to support a portion of the plate, and the other surface of the bar may be provided so as not to contact another portion of the plate. As another example, one surface of the bar may be provided to support at least a portion of the plate, and the other surface of the bar may be provided to support another portion of the plate. The support includes a bar provided with an empty space therein, the support includes a plurality of bars and an empty space is provided between the plurality of bars, or the support includes a bar and the bar is provided separately from the bars It may be arranged to provide an empty space between the separate parts. The support may optionally include a connecting plate 35 including a portion connected to the bar or a portion connecting a plurality of bars. The connecting plate may include a portion extending in the longitudinal direction of the vacuum space portion or may include a portion extending along the extending direction of the plate. An XZ-plane cross-sectional area of the connecting plate may be greater than an 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. At least one of one surface and the other surface of the bar may be a surface on which the bar supports the plate. The shape of the connecting plate is not limited. The support includes a connection plate provided with an empty space therein, the support includes a plurality of connection plates and an empty space is provided between the plurality of connection plates, or the support includes a connection plate and the connection The plate may be arranged to provide an empty space between the connection plate and a separate component provided separately. As a second example, the support may include a support plate 35 . The support plate may include a portion extending in a longitudinal direction of the vacuum space portion or may include a portion extending along a direction in which the plate extends. The support plate may be provided to support only one of the first plate and the second plate, or the support plate may be provided to support both the first plate and the second plate. For example, one surface of the support plate may be provided to support a portion of the plate, and the other surface of the support plate may be provided so as not to contact another portion of the plate. As another example, one surface of the support plate may be provided to support at least a portion of the plate, and 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. The support includes a support plate provided with an empty space therein, the support includes a plurality of support plates and an empty space is provided between the plurality of support plates, or the support includes a support plate and the support The plate may be arranged to provide an empty space between the support plate and a separate component provided separately. As a third example, the support may include a porous material 33 or a filler 33 . The inside of the vacuum space may be supported by a porous material or a filler. The inside of the vacuum space part 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, and the plurality of porous materials or a plurality of fillers may be disposed to contact each other. When an empty space is provided inside the porous material, an empty space is provided between a plurality of porous materials, or an empty space is provided between the porous material and a separate component distinct from the porous material, the porous material As described above, it may be understood as any one of a connection plate and a support plate. When an empty space is provided inside the filler, an empty space is provided between a plurality of fillers, or an empty space is provided between the filler and a separate component distinct from the filler, the filler is as described above, It may be understood as any one of a connection plate and a support plate. The support of the present invention may include any one of the above examples or an example in which two or more are combined.

Referring to FIG. 3A , as an embodiment, the support may include a bar 31 and a connecting plate and a supporting plate 35 . The connection plate and the support plate may be designed separately. Referring to FIG. 3B , as an embodiment, the support may include a bar 31 , a connecting plate/support plate 35 , and a porous material 33 filled in the vacuum space. The porous material 33 may have a higher emissivity than stainless steel, which is a material of the plate, but since the vacuum space is filled, the resistance efficiency of radiant heat transfer is high. The porous material may also function as a heat transfer resistor to be described later. More preferably, the porous material may perform the function of a radiation resistance sheet to be described later. Referring to FIG. 3C , as an embodiment, the support may include a porous material 33 or a filler 33 . The porous material 33 may be provided in a compressed state so that the filler can maintain the gap between the vacuum space portions. The film 34 may be provided in a state in which a hole is punched as an exemplary PE material. The porous material 33 or the filler may perform both a function of a heat transfer resistor and a function of the support, which will be described later. More preferably, the porous material may perform the function of the radiation resistance sheet to be described later and the function of the support.

4 is a view for explaining an embodiment of the vacuum insulator centering on the heat transfer resistors (32, 33, 60, 63, thermal insulator, heat transfer resistance body). The vacuum insulator 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 following examples, or an example in which two or more are combined.

The heat transfer resistors 32, 33, 60 and 63 may be an object that reduces the amount of heat transfer between the first space and the second space or an object that reduces the amount of heat transfer between the first plate and the second plate. can The heat transfer resistor is disposed on a heat transfer path formed between the first space and the second space or on a heat transfer path formed between the first plate and the second plate. can be placed. The heat transfer resistor may include a portion extending in a direction along a wall defining the vacuum space portion, or the heat transfer resistor may include a portion extending in a direction in which the plate extends. Optionally, the heat transfer resistor may include a portion extending from the plate in a direction away from the vacuum space portion. The heat transfer resistor may be provided on at least a portion of a peripheral portion of the first plate and a peripheral portion of the second plate, or may be provided on at least a portion of an edge of the first plate and the second plate. The heat transfer resistor may be provided in a portion in which the through hole is formed or as a pipe connected to the through hole. A separate tube or a separate part to be distinguished from the tube may be disposed inside the tube. Examples of the aforementioned tube 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 thermal insulation performance of the vacuum insulator can be further improved. A shield 62 may be provided on the outside of the heat transfer resistor to be insulated. The inside of the heat transfer resistor may be insulated by a vacuum space part. The shielding part may be provided with a porous material or a filler in contact with the outside of the inside of the heat transfer resistor. The shielding part may be provided as an insulating structure exemplified by a separate gasket placed outside the inside of the heat transfer resistor. The heat transfer resistor may be a wall defining the third space.

An example in which the heat transfer resistor is connected to the plate can be understood by replacing the support with the heat transfer resistor in the example in which the support is provided to support the plate. A duplicate description will be omitted. An example in which the heat transfer resistor is connected to the support can be understood by replacing the plate with the support in the example in which the heat transfer resistor is connected to the plate. A duplicate description will be omitted. The example of reducing heat transfer via the heat transfer body may be applied instead of the example of reducing heat transfer via the support, and the same description will be omitted.

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

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 connection frame 70 may be further provided outside the conductive resistance sheet. The connection frame may be a portion from which the first plate or the second plate is extended, or a portion from which the side plate is extended. Optionally, the connection frame 70 may include a part to which parts disposed outside the vacuum space part are connected, such as parts for sealing the door and the body, an exhaust port required for an exhaust process, and a getter port for maintaining vacuum. can 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 portion. The conduit 64 may be provided separately on the outside of the conductive resistance sheet. The conductive resistance sheet may be provided in a pleated shape. Through this, the heat transfer path can be lengthened, and deformation due to the 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 strain resistance smaller than that of at least one of the plate, the radiation resistance sheet, and the support. The radiation resistance sheet may include a portion having a strain resistance smaller than that of at least one of the plate and the support. The plate may include a portion having less strain resistance 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 greater radiation heat transfer resistance than at least one of the plate, the conductive resistance sheet, and the support. The support may include a portion having a greater heat transfer resistance than the plate. For example, at least one of the plate, the conductive resistance sheet, and the connection frame may include stainless steel, the radiation resistance sheet may include aluminum, and the support may include a resin material.

5 is a graph for observing the process of evacuating the inside of the vacuum insulator with time and pressure when a support is used. An example of the vacuum insulator vacuum evacuation step is as follows. The present invention may be any one of the following examples, or an example in which two or more are combined.

While the exhaust step is being performed, an outgassing step, which is a process in which the gas in the vacuum space is exhausted or the potential gas remaining in the parts of the vacuum insulator, is exhausted may be performed. As an example of the outgassing step, the exhausting step includes at least one of heating or drying the vacuum insulator, providing a vacuum pressure to the vacuum insulator, and providing a getter to the vacuum insulator. may include In this case, it is possible to promote the vaporization of the potential gas remaining in the parts provided in the vacuum space portion to be exhausted. The exhausting step may include cooling the vacuum insulator. The cooling step may be performed after the step of heating or drying the vacuum insulator is performed. Preferably, the step of heating or drying the vacuum insulator and the step of providing a vacuum pressure to the vacuum insulator may be performed together. Preferably, the step of heating or drying the vacuum insulator and the step of providing a getter to the vacuum insulator may be performed together. 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 a 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. For example, after the step of providing a vacuum pressure to the vacuum insulator is performed, the step of providing a getter to the vacuum insulator may be performed. When a vacuum pressure is provided to the vacuum insulator, the pressure of the vacuum space portion may drop to a certain level and then no longer drop. At this time, after stopping the step of providing a vacuum pressure to the vacuum insulator, a getter may be introduced. As an example of stopping the step of providing the vacuum pressure to the vacuum insulator, the operation of the vacuum pump connected to the vacuum space part may be stopped. When the getter is added, the step of heating or drying the vacuum insulator may be performed together. Through this, outgassing can be promoted. As another example, after the step of providing the getter to the vacuum insulator is performed, the step of providing a vacuum pressure to the vacuum insulator may be performed.

The time during which the vacuum insulator vacuum evacuation step is performed may be referred to as a vacuum evacuation time. The vacuum exhaust time includes a time period during which the step of heating or drying the vacuum insulator is performed (Δt1), a time period during which the step of maintaining the getter in the vacuum insulator is performed (Δt2), and the vacuum insulation It may include at least one time among the time (Δt3) during which the step of cooling the sieve is performed. Examples of Δt1, Δt2, and Δt3 are as follows. It may be any one of the following examples of the present invention or a combination of two or more. In the step of evacuating the vacuum insulator, Δt1 may be greater than or equal to t1a and less than or equal to t1b. As a first example, the t1a may be greater than or equal to 0.2 hr and less than or equal to 0.5 hr. The t1b may be greater than or equal to 1 hr and less than or equal to 24.0 hr. Preferably, the Δt1 may be 0.3 hr or more and 12.0 hr or less. Preferably, the Δt1 may be 0.4 hr or more and 8.0 hr or less. More preferably, the Δt1 may be 0.5 hr or more and 4.0 hr or less. In this case, even if Δt1 is kept as short as possible, outgassing can be applied to a sufficient vacuum insulator. In one example, the parts of the vacuum insulator that are exposed to the vacuum space are less than any one of the parts of the vacuum insulator that are exposed to the external space of the vacuum insulator. , %) may be included. Specifically, the part exposed to the vacuum space may include a part having a lower outgassing rate than that of a thermoplastic polymer. More specifically, a support or a radiation resistance sheet may be disposed in the vacuum space portion, and the outgassing rate of the support may be lower than that of the thermoplastic plastic. As another example, a part of the vacuum insulator that is exposed to the vacuum space has a higher operating temperature than any one of the parts of the vacuum insulator that is exposed to the external space of the vacuum space. It may be a case including a part having a ° C. In this case, the vacuum insulator can be heated to a higher temperature, thereby increasing the outgassing rate. For example, the parts exposed to the vacuum space It may include a portion having a higher operating temperature than that of a thermoplastic polymer.For more specific example, a support or a radiation-resisting sheet is disposed in the vacuum space portion, and the use temperature of the support may be higher than that of the thermoplastic plastic. As another example, among the parts of the vacuum insulator, the parts exposed to the vacuum space may include more metal parts than non-metal parts, that is, the mass of the metal part is greater than the mass of the non-metal part. The volume of the metal part may be larger than the volume of the non-metal part, or the area where the metal part is exposed to the vacuum space may be larger than the area where the non-metal part is exposed to the vacuum space. When there are a plurality of parts exposed to the space, the sum of the volume of the metallic material contained in the first part and the volume of the metallic material contained in the second part is equal to the volume of the non-metal material contained in the first part and the second It may be greater than the sum of the volumes of the non-metallic materials included in the part.If there are a plurality of parts exposed to the vacuum space, the mass of the metal material included in the first part and the metal material included in the second part It may be a case in which the sum of the mass of the first part is greater than the sum of the mass of the non-metal material included in the first part and the mass of the non-metal material included in the second part. The sum of the area where the metal material included in the first part is exposed to the vacuum space part and the area where the metal material included in the second part is exposed to the vacuum space part is the sum of the area where the metal material included in the first part is exposed to the vacuum space part. Including the area exposed to the space and the second part The non-metallic material may be larger than the sum of the areas exposed to the vacuum space. As a second example, t1a may be greater than or equal to 0.5 hr and less than or equal to 1 hr. The t1b may be greater than or equal to 24.0 hr and less than or equal to 65 hr. Preferably, the Δt1 may be greater than or equal to 1.0 hr and less than or equal to 48.0 hr. Preferably, the Δt1 may be 2 hr or more and 24.0 hr or less. More preferably, the Δt1 may be 3 hr or more and 12.0 hr or less. In this case, it may be a vacuum insulator that needs to maintain Δt1 as long as possible. In this case, it may be the case opposite to the examples described in the first example, or a case where the part exposed to the vacuum space is made of a thermoplastic material. A duplicate description will be omitted. In the step of evacuating the vacuum insulator, Δt2 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. Preferably, the Δt2 may be 0.2 hr or more and 3.0 hr or less. More preferably, the Δt2 may be 0.3 hr or more and 2.0 hr or less. More preferably, the Δt2 may be 0.5 hr or more and 1.5 hr or less. In this case, the vacuum insulator may be sufficient for outgassing through the getter even by keeping Δt2 as short as possible. In the step of evacuating the vacuum insulator, Δt3 may be greater than or equal to t3a and less than or equal to t3b. The t3a may be greater than or equal to 0.2 hr and less than or equal to 0.8 hr. The t3b may be greater than or equal to 1 hr and less than or equal to 65.0 hr. Preferably, the Δt3 may be 0.2 hr or more and 48.0 hr or less. Preferably, the Δt3 may be 0.3 hr or more and 24.0 hr or less. More preferably, the Δt3 may be 0.4 hr or more and 12.0 hr or less. More preferably, the Δt3 may be 0.5 hr or more and 5.0 hr or less. After the heating or drying step of the exhaust step is performed, the cooling step may be performed. For example, when the heating or drying step is performed for a long time, Δt3 may be long. The vacuum insulator of the present invention may be manufactured such that Δt1 is greater than Δt2, Δt1 is less than or equal to Δt3, or Δt3 is greater than Δt2. Preferably, Δt2<Δt1≤Δt3. The vacuum insulator of the present invention has Δt1+Δt2+Δt3 greater than or equal to 0.3 hr, less than or equal to 70 hr, greater than or equal to 1 hr, less than or equal to 65 hr, greater than or equal to 2 hr, or same, and may be manufactured to be less than or equal to 24hr. More preferably, Δt1+Δt2+Δt3 may be manufactured to be greater than or equal to 3 hr and less than or equal to 6 hr.

An example of the vacuum pressure condition during the exhaust step is as follows. The present invention may be any one of the following examples, or an example in which two or more are combined. The minimum value of the vacuum pressure in the vacuum space during the exhaust step may be greater than 1.8E-6 Torr. Preferably, the lowest value of the vacuum pressure is greater than 1.8E-6 Torr, less than or equal to 1.0E-4 Torr, greater than 0.5E-6 Torr, less than or equal to 1.0E-4 Torr, or 0.5E- greater than 6 Torr, and may be less than or equal to 0.5E-5 Torr. More preferably, the minimum value of the vacuum pressure may be greater than 0.5E-6 Torr and less than 1.0E-5 Torr. As described above, the reason for limiting the minimum value of the vacuum pressure provided during the exhausting step is that even when the pressure is reduced with a vacuum pump during the exhausting step, the degree of the vacuum pressure dropping below a certain level is slowed down. As an embodiment, after the evacuation 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 vacuum pressure maintained is greater than or equal to 1.0E-5 Torr, less than or equal to 1.0E-1 Torr, greater than or equal to 1.0E-5 Torr, less than or equal to 1.0E-2 Torr, or 1.0E greater than or equal to -4 Torr, less than or equal to 1.0E-2 Torr, greater than or equal to 1.0E-5 Torr, less than or equal to 1.0E-3 Torr, greater than or equal to 1.0E-4 Torr; The pressure may be less than or equal to 1.0E-3 Torr. As a result of predicting the change of the vacuum pressure in the vacuum insulator of the example, it was confirmed that the vacuum pressure was maintained below 1.0E-04Torr even after 16.3 years, and the other was 17.8 years. It was confirmed that the vacuum pressure was maintained at 1.0E-04Torr or less even in Yiru. As such, the vacuum pressure of the vacuum insulator must be maintained at a predetermined level or less, even if there is a change over time, to be used industrially.

5A is a graph of the elapsed time and pressure of an exhaust process according to an example, and FIG. 5B is an accelerated experiment of a vacuum insulator of a refrigerator having an internal volume of 128 liters to explain the results of a long-term vacuum maintenance experiment. Referring to FIG. 5B , it can be seen that the vacuum pressure is gradually increased according to the aging. For example, it was confirmed that 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 industrially applicable.

6 is a graph comparing vacuum pressure and gas conductivity. Referring to FIG. 6 , the actual heat transfer coefficient (eK) of gas conductivity according to vacuum pressure according to the size of the gap inside the vacuum space part 50 is shown as a graph. The gap of the vacuum space part was measured in three cases of 3mm, 4.5mm, and 9mm. The gap of the vacuum space is defined as follows. When the radiation resistance sheet 32 is located inside the vacuum space, it is a distance between the radiation resistance sheet and an adjacent plate, and when there is no radiation resistance sheet inside the vacuum space, the first plate and the second plate is the distance between the plates. It can be seen that the point corresponding to the conventional real heat transfer coefficient 0.0196 W/mk for providing an insulating material by foaming polyurethane is 5.0E-1 Torr even when the size of the gap is 3 mm because the size of the gap is small. On the other hand, even when the vacuum pressure is lowered, it was confirmed that the point at which the reduction effect of the insulation effect due to the gas conduction heat is saturated is approximately 4.5E-3Torr. The pressure of 4.5E-3Torr can be determined as the point at which the reduction effect of gas conduction heat is saturated. In addition, when the real heat transfer coefficient is 0.01W/mk, it is 1.2E-2Torr. An example of the range of vacuum pressure in the vacuum space according to the gap is as follows. The support includes at least one of a bar, a connecting plate, and a support plate, and when the gap of the vacuum space is greater than or equal to 3 mm, the vacuum pressure is greater than or equal to A and less than 5E-1 Torr, or 2.65E It may be greater than -1 Torr and less than 5E-1 Torr. As another example, the support includes at least one of a bar, a connecting plate, and a support plate, and when the gap of the vacuum space is greater than or equal to 4.5 mm, the vacuum pressure is greater than or equal to A and less than 3E-1 Torr or greater than 1.2E-2 Torr and less than 5E-1 Torr. As another example, when the support includes at least one of a bar, a connecting plate, and a support plate, and the gap of the vacuum space is greater than or equal to 9 mm, the vacuum pressure is greater than or equal to A and 1.0×10^-1 It may be less than Torr, greater than 4.5E-3 Torr, and less than 5E-1 Torr, where A may be greater than or equal to 1.0×10^-6 Torr and less than or equal to 1.0E-5 Torr. Preferably, A may be 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 may be understood that the size of the gap ranges from several micrometers to several hundreds of micrometers. When the support and the porous material are provided together in the vacuum space part, a vacuum pressure intermediate between the case of using only the support and the case of using only the porous material may be used.

7 is a view showing various embodiments of the vacuum space unit. The present invention may be any one of the following examples, or an example in which two or more are combined.

Referring to FIG. 7 , the vacuum insulator of the present invention may include a vacuum space part. The vacuum space part 50 may include a first vacuum space part extending in a first direction (eg, X-axis) and having a predetermined height. The vacuum space part 50 may selectively include a second vacuum space part (hereinafter, vacuum space expansion part) different from the first vacuum space part in at least one of a height and a direction. The vacuum space extension portion may be provided by extending at least one of the first and second plates and the side plate. In this case, the heat transfer resistance can be increased by lengthening the heat conduction path along the plate. The vacuum space extension in which the second plate extends may reinforce the insulating performance of the front portion of the vacuum insulator, and the vacuum space extension in which the first plate extends may be a rear portion of the vacuum insulator. It is possible to reinforce the thermal insulation performance of the side plate, the extended vacuum space extension portion can reinforce the thermal insulation performance of the side portion (side portion) of the vacuum insulator. Referring to FIG. 7A , the second plate may extend to provide the vacuum space extension part 51 . The second plate may include the vacuum space portion 50 and the second portion 202 extending from the first portion 201 forming the vacuum space extension portion 51 . The second portion 202 of the second plate may branch a heat conduction path along the second plate, thereby increasing heat transfer resistance. Referring to FIG. 7B , the side plate may extend to provide the vacuum space extension part. The side plate may include the vacuum space part 50 and the second part 152 extending from the first part 151 forming the vacuum space extension part 51 . The second portion of the side plate may branch a heat conduction path along the side plate, thereby improving thermal insulation performance. all. The first and second portions 151 and 152 of the side plate may branch a heat conduction path to increase heat transfer resistance. Referring to FIG. 7C , the first plate may extend to provide the vacuum space extension part. The first plate may include a second portion 102 extending from the first portion 101 forming the vacuum space portion 50 and the vacuum space extension portion 51 . The second part may branch the heat conduction path along the second plate, thereby increasing the heat transfer resistance. Referring to FIG. 7D , the vacuum space extension part 51 may include an X-direction extension part 51a and a Y-direction extension part 51b of the vacuum space part. The vacuum space extension part 51 may extend in a plurality of directions of the vacuum space part 50 . Through this, it is possible to reinforce the thermal insulation performance in a plurality of directions, and to increase the heat transfer resistance by lengthening the heat conduction path in a plurality of directions. The vacuum space extension unit extending in the plurality of directions may further improve thermal insulation performance by branching the heat conduction path. Referring to FIG. 7E , the side plate may provide the vacuum space extension unit extending in a plurality of directions. The vacuum space expansion part may reinforce the insulating performance of the side part of the vacuum insulator. Referring to FIG. 7F , the first plate may provide the vacuum space extension unit extending in a plurality of directions. The vacuum space expansion part may reinforce the insulating performance of the side part of the vacuum insulator.

8 is a view for explaining an additional insulator. The present invention may be any one of the following examples, or an example in which two or more are combined. Referring to FIG. 8 , the vacuum insulator of the present invention may optionally include an additional insulator 90 . The additional insulator may be an object having a lower degree of vacuum than the vacuum insulator or may be an object that does not include a part in a vacuum state therein. The vacuum insulator and the additional vacuum insulator may be directly connected or connected through a medium . In this case, the medium may be an object having a lower degree of vacuum than at least one of the vacuum insulator and the additional insulator, or an object that does not include a part in a vacuum state therein. When the vacuum insulator includes a portion in which the height of the vacuum insulator is high and a portion in which the height of the vacuum insulator is low, the additional insulator may be disposed in a portion in which the height of the vacuum insulator is low. The additional insulator may include a portion connected to at least a portion of the first and second plates and the side plate. The additional insulator may be supported on the plate, coupled or sealed. A degree of sealing between the additional insulator and the plate may be lower than a degree of sealing between the plates. The additional heat insulator may include a cured heat insulator (eg, PU foam) that is cured after being injected, a pre-molded resin, a peripheral heat insulator, and a side panel. At least a portion of the plate may be provided to be located inside the additional insulator. The additional insulator may include an empty space. The plate may be provided to be accommodated in the empty space. At least a portion of the plate may be provided to cover at least a portion of the additional heat insulator. The additional insulator may include a member covering the outer surface thereof. The member may be at least a part of the plate. The additional insulator may be a medium for connecting, supporting, bonding, or sealing the vacuum insulator and the component. The additional insulator may be a medium for connecting, supporting, bonding, or sealing the vacuum insulator to another vacuum insulator. The additional heat insulator may include a portion connected to a fastening part provided on at least a portion of the plate. The additional insulator may include a portion connected to a cover covering the additional insulator. The cover may be disposed between the first plate and the first space, between the second plate and the second space, or between the side plate and a space other than the vacuum space part 50 . can For example, the cover may include a part on which the component is mounted. As another example, the cover may include a portion forming an exterior of the additional heat insulator. Referring to FIGS. 8A to 8F , the additional thermal insulator may include a peripheral thermal insulator. The peripheral insulator may be disposed on at least a portion of a periphery of the vacuum insulator, a periphery of the first plate, a periphery of the second plate, and the side plate. The peripheral insulator disposed on the periphery of the first plate or the second plate may extend to the portion where the side plate is formed or to the outside of the side plate. The peripheral insulator disposed on the side plate may extend to a portion where the first plate or the second plate is formed, or may extend to an outer side of the first plate or the second plate. 8G to 8H , the additional insulator may include a central thermal insulator. The central thermal insulator includes at least a portion of a central portion of the vacuum insulator, a central portion of the first plate, and a central portion of the second plate. can be placed in

Referring to FIG. 8A , the perimeter insulation 92 may be placed on the periphery of the first plate. The perimeter insulation may contact the first plate. The peripheral insulator may be separated from the first plate or may extend further (indicated by a dotted line). The peripheral insulation may improve the thermal insulation performance of the peripheral portion of the first plate. Referring to FIG. 8B , the perimeter insulation may be disposed on the periphery of the second plate. The perimeter insulation may contact the second plate. The peripheral insulator may be separated from the second plate or may extend further (indicated by a dotted line). The peripheral insulation may improve the thermal insulation performance of the peripheral portion of the second plate. Referring to FIG. 8C , the perimeter insulation may be disposed on the periphery of the side plate. The peripheral insulation may contact the side plate. The peripheral insulation may be separated from the side plate or may extend further. The peripheral portion insulator may improve the thermal insulation performance of the peripheral portion of the side plate. Referring to FIG. 8D , the peripheral insulation 92 may be placed on the peripheral portion of the first plate. The peripheral insulator may be placed on the periphery of the first plate constituting the vacuum space expansion part 51 . The peripheral insulator may be in contact with the first plate formed by the vacuum space extension. The peripheral insulator may be separated from the first plate constituting the vacuum space extension or may further extend. The peripheral part insulator may improve the thermal insulation performance of the peripheral part of the first plate constituting the vacuum space expansion part. Referring to FIGS. 8E and 8F , in the peripheral insulator, the vacuum space expansion part may be disposed on a peripheral part of the second plate or the side plate. The same explanation as in FIG. 8D may be applied. Referring to FIG. 8G , the central insulator 91 may be placed in the central portion of the first plate. The central part insulator may improve the thermal insulation performance of the central part of the first plate. Referring to FIG. 8H , the central insulator may be disposed on the central portion of the second plate. The central part insulator may improve the thermal insulation performance of the central part of the second plate.

9 is a view for explaining a heat transfer path between first and second plates having different temperatures. An example of the heat transfer path is as follows. The present invention may be any one of the following examples, or an example in which two or more are combined.

The heat transfer path may pass through a portion extending from at least a portion of the first portion 101 of the first plate, the first portion 201 of the second plate, and the first portion 151 of the side plate. there is. The first part may include a part forming the vacuum space part. The extended portions 102 , 152 , and 202 may include portions extending in a direction away from the first portion. The extended portion may include a side portion of the vacuum insulator or a portion extending toward a side portion of a plate having a higher temperature among the first and second plates or a side portion of the vacuum space portion 50 . . The extended portion is a portion extending in a direction away from the front portion of the vacuum insulator or the front portion of the plate having a higher temperature among the first and second plates or the front portion of the vacuum space portion 50 . may include Through this, it is possible to reduce the generation of dew on the front part. The vacuum insulator or the vacuum space unit 50 may include first and second surfaces having different temperatures from each other. The temperature of the first surface may be lower than that of the second surface. For example, the first surface may be the first plate, and the second surface may be the second plate. The extended portion may include a portion extending in a direction away from the second surface or extending toward the first surface. The extended portion may include a portion in contact with the second surface or a portion extending in contact with the second surface. The extended portion may include a portion extending apart from the two surfaces. The extended portion may include a portion having greater heat transfer resistance than at least a portion of the plate or greater than that of the first surface. The extended portion may include a plurality of portions extending in different directions. For example, the extended portion may include a second portion 202 of the second plate and a third portion 203 of the second plate. A third portion may also be provided on the first plate or the side plate. Through this, it is possible to increase the heat transfer resistance by lengthening the heat transfer path. In the extended portion, the above-described heat transfer resistor may be disposed. An additional thermal insulator may be disposed outside the extended portion. Through this, the extended portion can reduce the occurrence of dew on the second surface. Referring to FIG. 9A , the second plate may include the extended portion extending to the periphery of the second plate. Here, the extended portion may further include extending rearward. Referring to FIG. 9B , the side plate may include the extended portion extending to a peripheral portion of the side plate. Here, the extended portion may be provided to be shorter or the same length than the extended portion of the second plate. Here, the extended portion may further include a rearwardly extending portion. Referring to FIG. 9C , the first plate may include the extended portion extending to the periphery of the first plate. Here, the extended portion may be shorter or extend the same length as the extended portion of the second plate. Here, the extended portion may further include a rearwardly extending portion.

10 is a view for explaining a branch on a heat transfer path between first and second plates having different temperatures. An example of the branching portion is as follows. The present invention may be any one of the following examples, or an example in which two or more are combined.

Optionally, the heat transfer path may pass through portions 205 , 153 , and 104 branching from at least some of the first plate, the second plate, and the side plate. Here, the branched heat transfer path means a heat transfer path that flows separately from the heat transfer path flowing along the plate and in a different direction. The branched portion may be formed in a direction away from the vacuum space portion 50 . The branched portion may be formed in a direction toward the inside of the vacuum space 50 . The branched part may perform the same function as the extended part described with reference to FIG. 9 , so a description of the same part will be omitted. Referring to FIG. 10A , the second plate may include the branched portion 205 . A plurality of the branched portions may be provided to be spaced apart from each other. The branched portion may include a third portion 203 of the second plate. Referring to FIG. 10B , the side plate may include the branched portion 153 . The branched portion 153 may branch from the second portion 152 of the side plate. At least two of the branched portions 153 may be provided. At least two branched portions 153 spaced apart from each other may be provided in the second portion 152 of the side plate. Referring to FIG. 10C , the first plate may include the branched portion 104 . The branched portion may further extend from the second portion 102 of the first plate. The branched portion may extend toward the periphery. The branched portion 104 may be bent to further extend. A direction in which the branched portion extends in FIGS. 10A, B, and C may be the same as at least one of the extending directions of the extended portion described in FIG. 10 .

11 is a view for explaining a manufacturing process of the vacuum insulator.

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 evacuating a vacuum insulator in which the gas in the space formed between the first plate and the second plate is discharged. Optionally, after the vacuum insulator component preparation step is performed, the vacuum insulator component assembly step may be performed or the vacuum insulator evacuation step may be performed. Optionally, after the vacuum insulator component assembly step is performed, the vacuum insulator vacuum evacuation step may be performed. Optionally, the vacuum insulator may be manufactured by the vacuum insulator component sealing step (S3) in which the 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 evacuation step (S4). The vacuum insulator may be manufactured as an object having a predetermined purpose by the device assembling step (S5) in which the vacuum insulator is combined with the components constituting the device. The device assembling step may be performed after the vacuum insulator evacuation step. Here, the components constituting the device mean the components constituting the device together with the vacuum insulator.

The vacuum insulator component preparation step (S1) is a step in which parts constituting the vacuum insulator are prepared or manufactured. Examples of the parts constituting the vacuum insulator may include various parts such as a plate, a support, a heat transfer resistor, and a tube. The vacuum insulator component assembly step (S2) is a step in which the prepared components are assembled. The vacuum insulator component assembling step may include disposing at least a portion of the support and the heat transfer resistor on at least a portion of the plate. For example, the step of assembling the vacuum insulator component may include disposing at least a portion of the support and the heat transfer resistor between the first plate and the second plate. Optionally, the step of assembling the vacuum insulator component may include disposing a penetrating component on at least a portion of the plate. For example, the step of assembling the vacuum insulator component may include disposing a penetrating component or a surface component between the first and second plates. After the penetrating part is disposed between the first plate and the second plate, the penetrating part may be connected or sealed to the penetrating part fastening portion.

An example of the vacuum insulator vacuum evacuation step is as follows. The present invention may be any one of the following examples or an example in which two or more are combined. The vacuum insulator evacuation step may include at least one of a step in which the vacuum insulator is put into the exhaust passage, a getter activation step, a vacuum leak check step, and an exhaust port closing step. The step of forming the fastening part may be performed in at least one of the vacuum insulator component preparation step, the vacuum insulator component assembly step, and the device assembly step. Before the vacuum insulator evacuation step is performed, a step of washing parts constituting the vacuum insulator may be performed. Optionally, the washing step may include applying ultrasonic waves to the parts constituting the vacuum insulator or providing ethanol or a material containing ethanol to the surface of the parts constituting the vacuum insulator. can The ultrasonic wave 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 content of ethanol in the material may be 50% to 90% or less. As another example, the content of ethanol in the material may be 60% to 80% or less. As another example, the content of ethanol in the material may be 65% to 75% or less. Optionally, after the washing step is performed, a step of drying the parts constituting the vacuum insulator may be performed. Optionally, after the washing step is performed, a step of heating the components constituting the vacuum insulator may be performed.

By way of example, an example of a process with respect to a support is as follows. The present invention may be any one of the following examples or a combination of two or more. The vacuum insulator component preparation step may include the step of manufacturing the support. Before the vacuum insulator evacuation step is performed, the step of manufacturing the support may be performed. For example, the support may be manufactured by injection. Optionally, before the vacuum insulator evacuation step is performed, a step of washing the support may be performed. Before the vacuum insulator evacuation step is performed or while the vacuum insulator evacuation step is performed, the step of storing the support under a predetermined condition may be performed. For example, before the vacuum insulator evacuation step is performed, the primary storage step may be performed, and the secondary storage step may be performed while the vacuum insulator evacuation step is performed. As another example, the storage step may be performed while the vacuum insulator evacuation step is performed. An example of the storage step is as follows. As a first example, the storage step may include drying or heating the support. Through this, outgassing can be performed on the support. The heating temperature may be higher than a predetermined reference temperature and lower than the melting point of the support. The predetermined reference temperature may be a temperature between 10 degrees and 40 degrees. The heating temperature may be higher than 80 degrees and lower than 280 degrees. The heating temperature may be higher than 100 degrees and lower than 260 degrees. The heating temperature may be higher than 120 degrees and lower than 240 degrees. The heating temperature may be higher than 140 degrees and lower than 220 degrees. The heating temperature may be higher than 160 degrees and lower than 200 degrees. The heating temperature may be higher than 170 degrees and lower than 190 degrees. The heating temperature in the primary storage step may be lower than the heating temperature in the secondary storage step. Optionally, the storage step may include cooling the support. After the step of drying or heating the support is performed, the step of cooling the support may be performed. As a second example, the storage step may include the step of storing the support in a state lower than atmospheric pressure. Through this, outgassing can be performed on the support. The stored pressure may be lower than the pressure in a vacuum state in which the internal space between the first plate and the second plate is maintained. The stored pressure may be higher than 10E-10 torr and lower than atmospheric pressure. The stored pressure may be higher than 10E-9 torr and lower than atmospheric pressure. The stored pressure may be higher than 10E-8 torr and lower than atmospheric pressure. The stored pressure may be higher than 10E-7 torr and lower than atmospheric pressure. The stored pressure may be higher than 10E-3 torr and lower than atmospheric pressure. The stored pressure may be higher than 10E-2 torr and lower than atmospheric pressure. The stored pressure may be higher than 0.5E-1 torr and lower than atmospheric pressure. The stored pressure may be higher than 0.5E-1 torr and lower than 3E-1 torr. The storage pressure in the primary storage step may be higher than the storage pressure in the secondary storage step. Optionally, the storage step may include the step of storage under the atmospheric pressure. After the step of storing the support in a state lower than atmospheric pressure is performed, the step of storing the support in a state of the atmospheric pressure may be performed.

Optionally, before the vacuum insulator evacuation step is performed, a step of coupling a plurality of parts of the support to each other may be performed. As an example, the coupling step may include coupling the support bar and the connecting plate. As another example, the coupling step may include coupling the support bar and the support plate.

In relation to the support, the process may optionally include a process related to the step in which the support is stored under a predetermined condition. An example of a process sequence related to the step in which the support is stored under a predetermined condition is as follows. The present invention may be any one of the following examples or a combination of two or more. After the step of drying or heating the support is performed, at least one of the step of storing the support at a state lower than atmospheric pressure, the step of cooling the support, and the step of storing the support at a state of atmospheric pressure can be performed there is. After the step of storing the support in a state lower than atmospheric pressure is performed, at least one of drying or heating the support, cooling the support, and storing the support at atmospheric pressure may be performed there is. The step of drying or heating the support and the step of storing the support under a condition lower than atmospheric pressure may be performed simultaneously. The step of drying or heating the support and the step of storing the support under atmospheric pressure may be performed simultaneously. The step of storing the support under a condition lower than atmospheric pressure and the step of cooling the support may be performed at the same time.

The process with respect to the support may optionally include a process related to the step of bonding the support. An example of a process sequence related to the step in which the support is coupled is as follows. The present invention may be any one of the following examples, or a combination of two or more. Before the coupling step is performed, a step of providing a separate part separated from the support in a space provided inside the support may be performed. For example, the component may include a heat transfer resistor. After the bonding step is performed, the support may be packaged or stored in a vacuum state. After the step of storing the support under a predetermined condition is performed, a step of coupling a plurality of parts of the support to each other may be performed.

In relation to the support, the process may optionally include a process related to the step of washing the support. An example of a process sequence related to the step of washing the support is as follows. The present invention may be any one of the following examples, or a combination of two or more. After the step of manufacturing the support is performed, at least one of a step of washing the support, a step of storing the support under a predetermined condition, and a step of coupling a plurality of parts of the support to each other may be performed. After the step of washing the support is performed, at least one of a step of storing the support under a predetermined condition and a step of coupling a plurality of parts of the support to each other may be performed. Before the step of washing the support is performed, at least one of a step of storing the support under a predetermined condition and a step of coupling a plurality of parts of the support to each other may be performed.

The process with respect to the support may optionally include a process related to the step of providing the support to the plate. An example of a process sequence related to the step of providing the support to the plate is as follows. The present invention may be any one of the following examples, or a combination of two or more. Before the vacuum insulator evacuation step is performed, the support may be provided in a space between the first plate and the second plate. Before the vacuum insulator evacuation step is performed, the support may be provided on the inside of the plate or on the surface of the plate. Before the vacuum insulator evacuation step is performed, the support may be coupled to the plate. After a part of the plate is provided with the fastening part, the support may be provided in a space between the first plate and the second plate.

The contents described in FIGS. 1 to 11 may be applied to all or selectively applied to the embodiments shown in the drawings below.

12 is a perspective view and a partial cross-sectional view of a vacuum insulator. FIG. 12 (a) is a vacuum insulator with the left side downward and the right side upward, and FIG. 12 (b) is a sectional perspective view of 1-1' of (a). and FIG. 12(c) is a cross-sectional view of 1-1'. In this figure, the foam member is shown in a removed state.

Referring to FIG. 12 , the vacuum insulator may be used for a door that opens and closes the accommodation space. The hinge may be installed on the first side of the vacuum insulator. The first side may be provided thinner than the second side in order to avoid interference when the door is opened and closed. The additional heat insulator 90 may be provided on the first side thinner than the second side. The first side and the second side may face each other. The first side may point to the A side in FIG. 12( a ), and the second side may point to the B side in FIG. 12( a ). The thickness of the sides of the C side and the D side connecting the A side and the B side may be gradually changed. Here, the C side may be the upper third side of the vacuum insulator, and the D side may be the lower fourth side of the vacuum insulator.

The description of the sides is similarly applicable to the first plate 10 , the second plate 20 , the side plate 15 , the additional insulator 90 , and the gasket 80 . For example, the first and second plates may be provided in a rectangular shape. For example, the side plate may have four sides in a quadrangle.

In one or more embodiments, the tube 40 may be provided where the vacuum space part 50 and the additional heat insulator 90 contact each other. The first end of the tube 40 may be placed on the vacuum space portion 50 , and the second end of the tube 40 may be placed on the additional heat insulator 90 . The tube 40 may protrude into the additional thermal insulator 90 . The other end of the tube 40 does not protrude into the accommodation space, so waste of the accommodation space can be prevented. The foam insulation is an insulation material that is solidified after the foaming liquid is injected into the periphery of the vacuum insulation and expands. The foaming liquid may be exemplified by polyurethane. The foam insulation may generate a high pressure during the expansion process. The foam insulation may allow the foam insulation to penetrate into a narrow space of the periphery. The tube 40 may not cross the outer boundary of the additional heat insulator 90 . The tube 40 may be embedded in the additional insulator 90 and the vacuum space 50 . Examples of the aforementioned tube may be ports such as exhaust ports or getter ports.

Optionally, the height of the tube 40 may be secured at least twice the diameter of the tube 40 . After exhaust through the pipe 40 is completed, it can be pinched off. Compression deformation may propagate during the pinch-off. It is possible to prevent the propagating deformation from deforming and breaking the coupling portion between the tube 40 and the plate. The tube 40, among the four corner portions 211 of the vacuum insulator, may be placed on a corner portion 211 opposite to the upper hinge. The tube 40 is placed on the top of the vacuum insulator to prevent damage to the tube 40 . Examples of the aforementioned tube may be ports such as exhaust ports or getter ports.

Optionally, the foaming liquid may be injected downward from the top of the vacuum insulator in order to use gravity. The vacuum insulator may first be filled with a foaming liquid in the lower portion. When the foaming liquid is filled, a phenomenon in which the foaming liquid is drawn downward in the direction of gravity may occur. The expansion force of the foaming liquid is greater in the lower part of the vacuum insulator than in the upper part. The foaming liquid placed on the lower part of the vacuum insulator has a large expansive force due to the restriction of the foaming space due to the first pressure of the foaming liquid in the upper part and the second solidified foaming liquid in the upper part. In order to reduce the influence of the expansion force of the foaming liquid on the tube 40, the tube 40 may be provided above the vacuum insulator. In order to minimize the influence of the expansion force of the foaming liquid on the tube 40, the tube 40 may be provided in the first portion 101 of the first plate on the upper side of the vacuum insulator. When flexible copper is used as the material of the tube 40 , the tube 40 may be directly deformed. Examples of the aforementioned tube may be ports such as exhaust ports or getter ports.

Optionally, in order to reduce the influence of the local difference in the expansion force of the foaming liquid on the tube 40, the tube 40 may be provided above the vacuum insulator. The tube 40 may be provided in the first portion 101 of the first plate on the upper side of the vacuum insulator. The tube 40 may be spaced apart from the side plate 15 of the vacuum insulator by a predetermined distance W1. Since the foaming liquid solidifies multiple times, the expansion force of the foaming liquid may be locally different. For example, the expansion force of the foam liquid on the right side of the tube 40 may be greater than the expansion force of the foam liquid on the left side of the tube 40 . In this case, the tube 40 may be damaged. The failure of the tube 40 may include deformation of the coupling portion between the tube 40 and the first plate 10 and expansion failure of the sealing portion of the tube 40 . Examples of the aforementioned tube may be ports such as exhaust ports or getter ports.

Optionally, the insulating thickness of the side on which the hinge is placed in the vacuum insulator may be thinner than the opposite side. Since the tube 40 is placed on the opposite side of the hinge of the vacuum insulator, it is possible to reduce insulation loss. In the vacuum insulator, the opposite side of the hinge may refer to a side opposite to the side on which the hinge is installed. Examples of the aforementioned tube may be ports such as exhaust ports or getter ports.

Optionally, the tube 40 may have an elongated portion protruding into the additional heat insulator 90 . The tube 40 may provide a heat conduction path of heat passing therethrough. The tube ( 40 ) provides a place in which it rests by excluding the foam that makes up the additional insulation ( 90 ). The tube 40 may cause thermal insulation loss of the vacuum insulator. In order to reduce the insulation loss due to the tube 40 , the tube 40 may be placed on the opposite side of the hinge of the vacuum insulator having a relatively thick additional insulation 90 . The tube 40 may be provided in the first portion 101 of the first plate opposite the hinge of the vacuum insulator. Examples of the aforementioned tube may be ports such as exhaust ports or getter ports.

13 is a cross-sectional perspective view and a cross-sectional view illustrating a cross section of 2-2' of FIG. 12(a), (a) is a cross-sectional perspective view, (b) is a cross-sectional view.

Referring to FIG. 13 , the foaming liquid is injected through the foaming liquid injection hole 470 . The foam injection hole 470 may not be vertically aligned with the tube 40 . The tube 40 can avoid the passage of the foaming liquid. The foaming liquid injected through the foaming liquid injection port may go down to the lower end of the vacuum insulator without being caught in the tube 40 . Examples of the aforementioned tube may be ports such as exhaust ports or getter ports.

Preferably, the distance W1 between the tube 40 and the side plate 15 is smaller than the distance W2 between the tube 40 and the upper cover 112 . The upper cover 112 may be placed on the edge of the third side. A lower cover 113 may be placed on a fourth side of the vacuum insulator facing the upper cover 112 . Examples of the aforementioned tube may be ports such as exhaust ports or getter ports.

14 to 16 are views related to a cross-section taken along line 3-3' of FIG. 12(a), FIG. 14 is a cross-sectional view taken along line 3-3' of FIG. 12(a), and FIG. It is an enlarged cross-sectional view, and FIG. 16 is a cross-sectional perspective view.

14 to 16 , the thickness of the vacuum insulator at the second side may be thicker than the thickness at the first side. The thickness of the additional insulator 90 at the second side may be thicker than the thickness at the first side. Here, the thickness of the vacuum insulator may mean a height between the first and second plates 10 and 20 . The height of the vacuum space part 50 at the first side and the second side side may be the same.

Optionally, the distance W3 from the third portion 203 of the second plate to the tube 40 from the second side side is the distance W2 between the tube 40 and the upper cover 112 . may be smaller than Accordingly, it is possible to further reduce the insulation loss leaking upward of the tube (40). An imaginary extension line (X direction) of the second portion 152 of the side plate from the second side may pass through the tube 40 . Accordingly, it is possible to reduce the insulation loss leaking from the tube 40 toward the second side of the vacuum insulator. A third portion 203 of the second plate may lie on edges of the first side and the second side. Examples of the aforementioned tube may be ports such as exhaust ports or getter ports.

Optionally, a flange 42 may be provided on the first plate 10 for fastening the tube 40 and the first plate 10 . The flange 42 may extend inward of the vacuum space portion 50 . In this case, it is easy to insert the tube 40 into the flange 42 . In this case, even when the first plate 10 and the second plate 20 are fastened, the pipe 40 can be easily fastened to the flange 42 . The flange 42 may extend outwardly of the vacuum space portion 50 . Interference between the flange 42 and components placed inside the vacuum space 50 can be prevented. The flange 42 may overlap the first space in the first portion 101 of the first plate. In this case, the heat insulation loss of the additional heat insulator 90 can be reduced. Here, the overlapping may mean being aligned in the height direction of the vacuum space part 50 . Examples of the aforementioned tube may be ports such as exhaust ports or getter ports.

An embodiment according to the location and properties of the flange 42 is presented.

17 and 18 are views showing an embodiment of the flange, and present an embodiment in which the extension direction of the flange and the position of the flange are different.

17A and 17B show a case in which the flange 42 extends outwardly of the vacuum space 50 . 18 (a) (b) is a case in which the flange 42 extends inside the vacuum space (50). 17A and 18A illustrate a case in which the flange 42 overlaps the additional heat insulator 90 in the first portion 101 of the first plate. 17(b) and 18(b) illustrate a case in which the flange 42 overlaps the first space in the first portion 101 of the first plate.

According to the first embodiment of FIG. 17( a ), it is possible to secure the accommodating space widely. It is possible to prevent the flange 42 from interfering with the support 30 and the heat transfer resistor. According to this embodiment, the support 30 and the heat transfer resistor may be installed in various ways. According to this embodiment, a plurality of the support 30 and the heat transfer resistor may be installed.

According to the second embodiment of FIG. 17( b ), it is possible to reduce the thermal insulation loss of the additional insulator 90 caused by the tube 40 . It is possible to prevent the flange 42 from interfering with the support 30 and the heat transfer resistor. According to this embodiment, the support 30 and the heat transfer resistor may be installed in various ways. According to this embodiment, a plurality of the support 30 and the heat transfer resistor may be installed. In this embodiment, a through hole 170 through which the tube passes may be provided in the inner panel 111 . The diameter of the through hole 170 of the inner panel 111 may be larger than the outer surface of the flange 42 . The flange 42 and the through hole may be spaced apart from each other. When the tube 40 is circular, the outer diameter of the tube 40 may be smaller than the inner diameter of the through hole 170 . The through hole of the inner panel 111 may be provided to be inclined or rounded to correspond to the shape of the flange 42 . Examples of the aforementioned tube may be ports such as exhaust ports or getter ports.

According to the third embodiment of FIG. 18( a ), it is possible to secure the accommodating space widely. The tube 40 can be conveniently inserted along the flange 42 .

According to the fourth embodiment of FIG. 18( b ), it is possible to reduce the thermal insulation loss of the additional insulator 90 caused by the tube 40 . The tube 40 can be conveniently inserted along the flange 42 . In this embodiment, the tube 40 may penetrate the first portion 101 of the first plate as a whole. In this embodiment, the tube 40 may pass through the inner panel 111 . A through hole 170 may be provided in the inner panel 111 . Examples of the aforementioned tube may be ports such as exhaust ports or getter ports.

According to the present invention, the vacuum insulator provides a first plate 10 having a first temperature, a second plate 20 having a second temperature different from the first temperature, and a vacuum space portion 50. It may include a sealing part sealing the first plate and the second plate. Optionally, the vacuum insulator includes a vacuum insulator component preparation step in which the first plate and the second plate are prepared in advance, a vacuum insulator component assembly step in which the prepared first plate and the second plate are assembled, and the component After the assembling step, it may be manufactured by a vacuum insulator vacuum evacuation step in which the gas in the space formed between the first plate and the second plate is discharged. Optionally, before the vacuum insulator evacuation step, it may be manufactured by a vacuum insulator component sealing step in which the space between the first plate and the second plate is sealed. Optionally, after the vacuum insulator evacuation step, a device assembly step in which the vacuum insulator and the components constituting the device are coupled may be performed.

Optionally, the vacuum insulator may include a component connected to the additional insulator 90 . Examples related to the above parts are as follows. The present invention may be any one of the following examples, or an example in which two or more are combined. The component may include a latch 81 . The component may include a first portion and a second portion provided connected to the first portion. The first portion may include a portion having a lower heat transfer resistance than the second portion. The first portion may be provided to be movable. The component may be provided in the central part of the additional thermal insulation. The component may be received in a groove formed in the additional insulation. A length of the groove in the Y-axis direction may be greater than 1/2 of a height in the Y-axis direction of the additional insulator.

Optionally, a second additional heat insulator provided separately from the additional heat insulator 90 may be included. Examples of the second additional thermal insulator are as follows. The present invention may be any one of the following examples, or an example in which two or more are combined. The second additional insulator may have a smaller height than the additional insulator in the Y-axis direction. The second additional thermal insulator may have a smaller volume than the additional thermal insulator. The second additional heat insulator 90 may include a portion to which a separate component distinct from the component 81 is connected. The separate component may include a hinge. The separate component may be provided so as not to overlap a portion of the side plate in the height direction of the vacuum space. The portion may include a portion extending in a height direction of the vacuum space portion. The portion may be provided to be located inside the additional heat insulator. The part may be provided to be spaced apart from the part by a predetermined distance in the longitudinal direction of the vacuum space part. The predetermined distance may be greater than a height of the vacuum space part. The part may be provided to overlap the part in the longitudinal direction of the vacuum space part. The component may be provided so as not to overlap a portion of the support 30 in the height direction of the vacuum space. The part may include a bar 31 . The part may include the bar and an additional bar adjacent to the bar and spaced apart from the bar by a predetermined distance. The part may be provided to be spaced apart from the part by a predetermined distance in the longitudinal direction of the vacuum space part. The predetermined distance may be greater than a height of the vacuum space part. The part may be provided to overlap the part in the longitudinal direction of the vacuum space part.

19 is a view comparing the peripheral portions of both sides of the vacuum insulator according to the embodiment, and is a view comparing a cross-sectional view of the second side of the vacuum insulator and the first side of the vacuum insulator.

Referring to FIG. 19 , the second side of the vacuum insulator and the first side of the vacuum insulator are different from each other. The first plate 10 , the second plate 20 , and the additional internal insulation 90 which can be defined as the interior of the side plate 15 differ from each other on the first and second sides. The additional insulator 90 may use various insulating materials such as foamed insulating material or pre-molded resin.

The heat insulating area (XY plane) of the additional insulator 90 may be larger at the second side than at the first side. In the height direction (Y direction) of the vacuum space portion 50 of the additional insulator 90 , the second side may have a thickness greater than that of the first side. Accordingly, more additional heat insulators 90 insulate the second side, and the heat insulation performance of the second side that is heightened by the parts such as the latch 81 can be further reinforced. In the longitudinal direction (X direction) of the vacuum space portion 50 of the additional insulator 90 , the thickness of the first side may be greater than that of the second side. Accordingly, it is possible to reduce heat loss that leaks to the edge of the second side, which has a smaller heat insulating area compared to the first side.

The rate of change of the insulation thickness in the height direction (Y direction) of the vacuum space portion 50 of the additional insulator 90 may be greater on the first side than on the second side. Accordingly, it is possible to minimize the interference of parts due to opening and closing of the door on the side on which the hinge is placed while reducing the insulation loss. Accordingly, the inclination angle A of the second portion of the second plate 20 may be greater toward the first side. The second part 202 of the second plate may cause interference with an external object, but the inclination angle A of the second part 202 of the second plate may be large to prevent interference.

The additional insulator 90 may use a foamed insulating material. The foam insulation material may be subjected to a process of solidifying after the foaming liquid is injected. The foaming liquid is a fluid and is affected by the hydraulic diameter of the injected space. The hydraulic diameter may be proportional to the insulating area and inversely proportional to the length of a curve surrounding the insulating area. As for the hydraulic diameter, the second side may be larger than the first side. The foaming liquid may flow more smoothly on the second side than on the first side. The second side may be filled with the foaming liquid more than the first side. When a lot of foaming liquid is injected, a larger foaming pressure can be applied.

Since the hydraulic diameter of the second side is larger than that of the first side, the foaming liquid on the first side does not flow smoothly. In order to improve the fluidity of the foaming liquid, the second part 152 of the side plate on the first side does not extend to the part. In order to improve the fluidity of the foaming liquid, the second part 152 of the side plate on the first side may maintain a predetermined distance from the component in the longitudinal direction (X direction) of the vacuum space part 50 . there is. In order to improve the fluidity of the foaming liquid, the second part 152 of the side plate on the first side may not overlap the part in the height direction (Y direction) of the vacuum space part 50 . . Here, the component may include a hinge.

On the second side, the fluidity of the foaming liquid is not bad, but the position of each member may be shifted or the member may be deformed due to a high foaming pressure. The second part 152 of the side plate on the second side may extend beyond the part in the longitudinal direction (X direction) of the vacuum space part 50 . Accordingly, the second part 152 of the side plate and the part interact to maintain a positional relationship between the members according to the design. The second part 152 of the side plate on the second side may overlap the part in the height direction (Y direction) of the vacuum space part 50 . Accordingly, the second part 152 of the side plate and the part interact to maintain a positional relationship between the members according to the design. Here, the component may include a latch 81 . In addition, several parts may be in contact with each other, support each other or be fixed to each other. The movable member such as the latch 81 exposed to external shocks can maintain the original design position by the interconnection structure.

The side of the first side and the side of the second side may have the same component mounted on the additional insulator. The component may include a gasket 80 . The gasket 80 may lie on the same plane. An imaginary line perpendicular to the imaginary plane formed by the gasket 80 may be provided. A first virtual line L1 and a second virtual line L2 may be provided on the first side. A third virtual line L3 and a fourth virtual line L4 may be provided on the second side. An interval between the first and second virtual lines L1 and L2 may mean an area in which the component is placed on the first side. An interval between the third and fourth virtual lines L3 and L4 may mean an area in which the component is placed on the second side.

The vacuum space portion 50 has the first side more extended toward the periphery of the vacuum insulator than the second side. In the vacuum space portion 50 , the vacuum space portion 50 on the first side extends beyond the virtual line, and extends more than the second side. Accordingly, the first side of the vacuum space portion 50 can reinforce the insulation wall of the narrow foam insulation in the height direction. By using the great thermal insulation effect of the vacuum space part 50, it is possible to reinforce the insufficient thermal insulation effect of the foam insulation material.

The edge of the second part 152 of the side plate moves more toward the periphery of the vacuum insulator on the first side than on the second side. The edge of the second portion 152 of the side plate extends beyond the imaginary line so that the vacuum space portion 50 on the first side extends more than the second side. Accordingly, the second portion 152 of the side plate on the first side moves to the extent that it almost touches the hinge shaft 21 . The first side of the vacuum space 50 may reinforce the insulation wall of the narrow foam insulation in the height direction. By using the great thermal insulation effect of the vacuum space part 50, it is possible to reinforce the insufficient thermal insulation effect of the foam insulation material. A load applied to an area adjacent to the hinge shaft 21 may be further supported.

The edge of the heat transfer resistor 32 moves more toward the periphery of the vacuum insulator at the first side than at the second side. The edge of the heat transfer resistor 32 extends beyond the imaginary line so that the vacuum space portion 50 on the first side extends more than the second side. The first side of the vacuum space 50 may reinforce the insulation wall of the narrow foam insulation in the height direction. By using the great thermal insulation effect of the vacuum space part 50, it is possible to reinforce the insufficient thermal insulation effect of the foam insulation material. Radiant heat transfer of the vacuum space unit 50 may be further reduced from the first side side. An example of the heat transfer resistor described with reference to FIG. 19 may be a radiation resistance sheet.

The outermost bar of the support 30 moves more toward the periphery of the vacuum insulator on the first side than on the second side. As for the outermost bar, the vacuum space portion 50 on the first side extends beyond the two virtual lines, and extends more than the second side. With this configuration, the vacuum space portion 50 can be supported over a long region from the first side.

The outermost bar of the support 30 may not be placed in an area formed by the two virtual lines L1 and L2. In other words, the region in which the gasket 80 extends in the height direction of the vacuum space part 50 and the outermost bar may not overlap. A heat conduction distance between the gasket 80 and the outermost bar may be increased. Accordingly, heat loss passing through the gasket 80 and the outermost bar can be reduced. Accordingly, it is possible to compensate for the insulation loss due to the narrow foam wall on the first side.

20 is a view comparing a cross-sectional view of the second side of the vacuum insulator with a cross-sectional view of the first side of the vacuum insulator, and the configuration related to the latch and the hinge will be described in detail using this drawing.

A hinge including a hinge shaft 21 may be placed on the first side. A latch 81 may be placed on the second side. At least a portion of the latch may be accommodated in the component accommodating space 830 . The part accommodating space 830 may accommodate various parts exemplifying the latch. An additional insulator 90 may not be placed in the component accommodating space 830 . The additional thermal insulation 90 may not interfere with the operation of the component.

The component accommodating space 830 may be protected by the component case 810 that is opened upward in the height direction (y-axis) of the vacuum space portion. The component case 810 may provide a lower wall of the component accommodating space 830 . The component case 810 may have a lower portion 811 adjacent to the second portion 152 of the side plate. The component case 810 may have an inner portion 812 adjacent to the central portion of the vacuum space portion. The component case 810 may have an outer portion 813 adjacent to the periphery of the vacuum space portion. The component case 810 may be provided as a single body. The second portion 102 of the first plate may have a gasket seating portion 103 on which the gasket 80 is placed. The second portion 102 of the first plate may have a plurality of bent cross-sections. The second portion 102 of the first plate may have fourth and fifth portions 107 and 105 of the first plate extending in the height direction of the vacuum space portion. The fourth portion 107 of the first plate may be aligned with the inner portion 812 . The fourth portion 107 of the first plate may be more adjacent to the component accommodating space 830 than the inner portion 812 . The second portion 102 of the first plate may have a stepped portion 108 . An upper end of the inner portion 812 may contact a lower end of the stepped portion 108 . The foaming liquid may not flow between the inner portion 812 and the fourth portion 107 of the first plate. The fifth portion 105 of the first plate may be aligned with the outer portion 813 . The fifth portion 105 of the first plate may be closer to the component accommodating space 830 than the outer portion 813 . The fifth portion 105 of the first plate may have a stepped portion 1051 . An upper end of the outer portion 813 may contact a lower end of the stepped portion 1051 . The foaming liquid may not flow between the outer part 813 and the fifth part 105 of the first plate. The first plate second portion 102 may have a sixth portion 106 of the first plate in contact with the second plate 20 . The second plate 20 and the sixth portion 106 of the first plate may be securely fastened to each other.

An upper wall of the component accommodating space 830 may be provided by a component cover 820 . The component cover 820 may have a step difference. The component cover 820 may have a plate corresponding surface 822 of the same height as the sixth portion 106 of the first plate. The component cover 820 may have a through hole 823 . The through hole 823 may be provided in the plate corresponding surface 822 . The component cover 820 may have a gasket seating portion 821 on which the gasket is mounted. The gasket seating portion 821 and the plate corresponding surface 822 may be placed at different heights in a height direction of the vacuum space portion. At least a portion of the latch, for example, Geolteok, may protrude out of the through hole 823 . The locking jaw may be caught on the body. The latch 81 may have a portion extending long in the depth direction (z-axis) of the vacuum space portion. The extended portion may extend vertically in the inside of the component accommodating space 830 . The lower end of the latch may reach the lower end of the vacuum insulator. An upper end of the latch may reach a central portion of the vacuum insulator. An operation knob may be provided at a lower end of the latch. The locking protrusion may be provided at an upper end of the latch.

After the component case 810 and the first plate 10 are fastened, the latch 81 may be placed. After the latch 81 is placed, the component cover 820 may be fastened. After the part cover 820 is fastened, the gasket 80 may be fastened.

21 is a view for explaining the hinge shaft cover and the hinge case on which the hinge shaft is placed. 22 is a view showing a state in which the hinge is installed in the hinge case.

21 to 22, in order to place the hinge, the hinge shaft cover 22 on which the hinge shaft 21 is placed is connected to the hinge shaft cover 22 to connect the hinge body with the main body 2 It may include a hinged case 23 on which the link 24 rests. The hinge shaft cover 22 and the hinge case 23 may be made of resin. The hinge shaft cover 22 may surround the hinge shaft 21 . The hinge shaft cover 22 and the hinge case 23 may be provided by being depressed in the depth direction (Z-axis) of the vacuum space part 50 .

In the first vacuum insulator 11 , the extension line extended by the member extending in the depth direction (Z axis) of the vacuum space portion 50 does not overlap the range L1 of the hinge axis 21 . may not be Here, overlap may mean penetration. In the first vacuum insulator 11 , the extension line extended by the member extending in the depth direction (Z axis) of the vacuum space portion 50 overlaps the range (L2 or L3) of the hinge shaft cover 22 . may not In the first vacuum insulator 11 , an extension line extended by a member extending in the depth direction (Z axis) of the vacuum space portion 50 may overlap the range L4 of the hinge case 23 . . As a member extending in the depth direction of the vacuum space part 50, the inner panel 111, the support 30, the radiation resistance sheet 32, the second plate 20, the first plate 10, and It may include an outer panel 211 .

An extension line extended by a member extending in the depth direction (Z axis) of the vacuum space portion 50 does not form an inclination angle with the extension axis of the hinge shaft 21 . An extension line extended by a member extending in the depth direction (Z axis) of the vacuum space portion 50 may be parallel to the extension axis of the hinge shaft 21 .

In the lower space of the hinge shaft cover 22, it is difficult for the foaming liquid to flow. In order not to obstruct the flow path of the foaming liquid, the member extending in the depth direction (Z-axis) of the vacuum space part 50 may not invade the lower part of the hinge shaft cover 22 . A supply line such as a water way or an electric way may pass through the hinge shaft 21 . The supply line may interfere with a member extending in the depth direction (Z-axis) of the vacuum space unit 50 . In order to avoid the interference, the member extending in the depth direction (Z-axis) of the vacuum space part 50 may be prevented from entering the lower side of the hinge shaft cover 22 .

An extension line extended by a member extending in the depth direction (Z-axis) of the vacuum space portion 50 from the first vacuum insulator 11 may overlap the hinge case 23 . Here, overlap may mean penetration. An extension line extended by a member extending in the depth direction (Z-axis) of the vacuum space 50 may overlap the link 24 . The first vacuum insulator 11 may support the hinge case 23 by such an overlapping relationship. The member extending in the depth direction of the vacuum space part 50 includes an inner panel 111 , a support 30 , a radiation resistance sheet 32 , a second plate 20 , a first plate 10 , and an outer side. A panel 211 may be included.

Since the first vacuum insulator 11 is made of a metal having a high specific gravity, a larger load is generated on the hinge. When an excessive load is applied to the hinge, deformation may occur. The load applied to the hinge shaft cover 22 and the hinge case 23 may be supported by the first vacuum insulator 11 being supported. Since the load of the hinge is a deformation that causes rotational deformation, both the hinge shaft cover 22 and the hinge case 23 can be supported.

Since the first vacuum insulator 11 supports and supports the hinge case 23 , deformation and damage of the hinge can be prevented. In order to smoothly support the hinge case 23 , the second part 152 of the side plate may contact the hinge case 23 and the vacuum space part 50 in the height direction (Z axis). The second part 152 of the side plate may support and support the hinge case 23 . The second part 152 of the side plate may contact the hinge shaft cover 22 in the longitudinal direction (X-axis) of the vacuum space part 50 . The second part 152 of the side plate may support the hinge shaft cover 22 .

According to the present invention, it is possible to provide a vacuum insulator that can be applied to real life.

Claims (16)

first plate;
second plate;
a sealing part sealing the first plate and the second plate to provide a vacuum space part;
a side plate having a portion extending in the height direction of the vacuum space;
a supporter for maintaining the vacuum space;
a heat transfer resistor for reducing an amount of heat transfer between the first plate and the second plate; and
A hinge is installed adjacent to any one side of the first and second plates, and a hinge that allows a rotation operation is included,
The vacuum insulator may include a vacuum insulator in which a first side on which the hinge is installed extends further in a longitudinal direction of the vacuum space than a second side facing the first side. The method of claim 1,
When a gasket is installed on the first plate, and an imaginary line extending in the height direction of the vacuum space portion from the end of the gasket is provided,
In the vacuum space portion, a vacuum insulator in which the first side extends beyond the virtual line. The method of claim 1,
The edge of the side plate is a vacuum insulator in which the first side is placed farther from the center toward the periphery of the vacuum insulator than the second side. The method of claim 1,
When a gasket is installed on the first plate, and an imaginary line extending in the height direction of the vacuum space portion from the end of the gasket is provided,
The edge of the side plate is a vacuum insulator in which the first side extends beyond the virtual line. The method of claim 1,
The heat transfer resistor includes a radiation resistance sheet that resists heat radiation between the first and second plates,
The edge of the radiation resistance sheet is a vacuum insulator in which the first side is placed farther from the center toward the periphery of the vacuum insulator than the second side. The method of claim 1,
When a gasket is installed on the first plate, and an imaginary line extending from the end of the gasket in the height direction of the vacuum space portion is provided,
The edge of the radiation resistance sheet extends beyond the imaginary line on the side of the vacuum insulator. first plate;
second plate;
a sealing part sealing the first plate and the second plate to provide a vacuum space part;
a side plate having a portion extending in the height direction of the vacuum space;
a supporter for maintaining the vacuum space; and
A hinge is installed adjacent to any one side of the first and second plates, and a hinge that allows a rotation operation is included,
A vacuum insulator in which the outermost bar among the supporters is placed further from the center toward the periphery of the vacuum insulator on the first side than on the second side. 8. The method of claim 7,
When a gasket is installed on the first plate, and an imaginary line extending in the height direction of the vacuum space portion from the end of the gasket is provided,
The outermost bar is a vacuum insulator in which the first side is placed beyond the two virtual lines. 8. The method of claim 7,
When a gasket is installed on the first plate, and an imaginary line extending in the height direction of the vacuum space portion from the end of the gasket is provided,
The outermost bar is a vacuum insulator in which the two imaginary lines (L1, L2) do not lie in an area. 8. The method of claim 7,
a gasket in contact with the first plate is included;
A vacuum insulator that does not overlap an area in which the gasket extends in the height direction of the vacuum space and an outermost bar among bars included in the support. a first plate having a first temperature;
a second plate having a second temperature different from the first temperature;
a sealing part sealing the first plate and the second plate to provide an internal space provided in a vacuum state;
a side plate having a component extending in a height direction of the inner space;
a support provided to maintain a spaced state between the first plate and the second plate;
a heat transfer resistor for reducing an amount of heat transfer between the first plate and the second plate; and
A hinge is installed adjacent to any one side of the first and second plates, and a hinge that allows a rotation operation is included,
After the vacuum insulator component preparation step in which the first plate and the second plate are prepared in advance, the vacuum insulator component assembly step in which the prepared first plate and the second plate are assembled, and the component assembly step, the first plate and A vacuum insulator manufactured by a vacuum insulator vacuum evacuation step in which the gas in the space formed between the second plates is discharged. 12. The method of claim 11,
In the inner space, a side of a first side on which the hinge is installed extends further in a longitudinal direction of the vacuum space portion than a side of a second side facing the first side. 13. The method of claim 12,
A vacuum insulator in which a gasket is installed on the first plate. 14. The method of claim 13,
When an imaginary line extending from the end of the gasket in a height direction of the vacuum space is provided, the vacuum insulator has a side of the first side extending beyond the imaginary line. 12. The method of claim 11,
When a gasket is installed on the first plate, and an imaginary line extending in the height direction of the vacuum space portion from the end of the gasket is provided,
The edge of the side plate is a vacuum insulator in which the first side extends beyond the virtual line. 12. The method of claim 11,
The heat transfer resistor includes a radiation resistance sheet that resists heat radiation between the first and second plates,
The edge of the radiation resistance sheet is a vacuum insulator in which the first side is placed farther from the center toward the periphery of the vacuum insulator than the second side.

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