KR20220059329A - Vacuum adiabatic body - Google Patents

Abstract

The present invention relates to a vacuum adiabatic body. According to the present invention, the vacuum adiabatic body includes: a first plate; a second plate; and a sealing unit sealing the first plate and the second plate to provide a vacuum space unit. Selectively, an additional insulator placed in a periphery of the vacuum adiabatic body includes a component of which at least a part is accommodated. Selectively, a side plate has a first part extended in the heightwise direction of the vacuum space unit. Selectively, the side plate has a second part extended in a different direction from that of the first part, and the second part of the side plate and the component can be separated. Therefore, the vacuum adiabatic body can improve insulation performance of the vacuum adiabatic body.

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. 10-2015-0109722.

The applicant has proposed 10-2015-0109722 in order to provide a vacuum insulator. In the above technique, the first and second plates 10 and 20, the side plate, and the conductive resistance sheet are fastened to each other with a plurality of sealing parts.

It has a peripheral insulation material that insulates the peripheral portion of the vacuum insulator of the cited document. In the cited literature, there is no suggestion about the structure and method of providing a vacuum insulator in consideration of insulation loss, prevention of deterioration of the sealing part, flowability of the foaming liquid, and impact resistance.

Republic of Korea Application No. 10-2015-0109722, vacuum insulator

The present invention proposes a vacuum insulator for reducing the insulation loss between the vacuum space part and the parts outside the vacuum space part.

The present invention proposes a vacuum insulator capable of improving the self-insulating performance of the vacuum space part.

The present invention proposes a vacuum insulator for preventing deterioration of the sealing portion of the vacuum insulator provided for sealing the vacuum insulator.

The present invention proposes a vacuum insulator for improving the foaming liquid flowability of an additional insulator provided in the periphery of the vacuum insulator.

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

In addition to the examples presented above, the present invention proposes specific solutions and means for solving them in [Means for Solving the Problems] and [Specific Contents for Implementing the Invention].

The vacuum insulator of the present invention, the first plate; second plate; and 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 side plate extending in the height direction of the vacuum space may be included. 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 at least one of the parts fastening parts connected to at least one of the first and second plates to which the parts are coupled. Accordingly, it is possible to provide a vacuum insulator that can achieve the industrial purpose.

Optionally, an additional insulator at least partially placed on the periphery of the first and second plates may be further included. Accordingly, it is possible to improve the thermal insulation performance of the peripheral portion of the vacuum insulator to which the thermal insulation effect by the vacuum space portion does not reach.

Optionally, a component may be included which rests at least in part on said additional thermal insulation. Optionally, a member necessary for the operation of a home appliance, a door, a main body, and other devices to which the vacuum insulator is applied may be installed.

Optionally, the side plate may have a first portion extending in a height direction of the vacuum space portion. Optionally, the side plate may have a second portion extending in a direction different from that of the first portion. According to this, in addition to securing the height of the vacuum space in which the side plate is performed, other functions such as providing a sealing part can be performed.

Optionally, the part and the second part of the side plate may be spaced apart by a first interval w1 in the height direction (Y direction) of the vacuum space part. According to this, it is possible to prevent the parts exposed to the outside air from being directly closed in the vacuum space, thereby improving the thermal insulation performance.

Optionally, the second portion of the side plate may extend in a longitudinal direction with the vacuum space portion. According to this, it is possible to provide a sealing portion for sealing the plate while reducing the deterioration in thermal insulation performance.

Optionally, the installation region of the component may overlap at least a portion of the second portion of the side plate in a height direction of the vacuum space portion. According to this, it is possible to provide a part in which an external shock transmitted by riding on the part is damped. Accordingly, it is possible to improve the impact resistance of the vacuum insulator.

Optionally, the installation region of the component may overlap all of the second portion of the side plate in the height direction of the vacuum space portion. According to this, it is possible to reduce a large amount of impact, and to provide the vacuum space expansion part in which the vacuum space part is expanded, thereby improving the thermal insulation performance of the vacuum insulator.

Optionally, the installation region of the component may overlap the edge of the second portion of the side plate in the height direction of the vacuum space portion. With such a configuration, a small amount of impact can be reduced.

Optionally, the installation region of the component may overlap a sealing portion for fastening the side plate and the first plate in a height direction of the vacuum space portion. The sealing part may prevent exposure to the outside. Accordingly, it is possible to prevent a change in the properties of the sealing portion.

Optionally, when the assembly of the vacuum insulator is completed, the component and the side plate may be spaced apart from each other. According to this, the insulating effect can be achieved through the spaced apart intervals.

Optionally, the component may include a latch. Optionally, the latch is a device for generating an impact, and the second part of the side plate may reduce an impact generated by the latch.

Optionally, when the assembly of the vacuum insulator is completed, the latch, the sealing part coupling the side plate and the first plate may be spaced apart from each other in a height direction (y-direction) of the vacuum space part. Accordingly, the sealing part and the latch may be spaced apart. Accordingly, it is possible to protect the sealing part by blocking it from the external space.

Optionally, before the assembly of the vacuum insulator is completed, the component and the side plate may be spaced apart from each other. According to this, the foaming liquid can sufficiently flow at the interval between the spaces. Accordingly, it is possible to prevent stagnation of the foaming liquid due to the local difference in foaming pressure.

Optionally, the additional insulator may include a foam member. Optionally, the injection direction (z direction) of the foaming liquid providing the foaming member may be provided to be the same as the extending direction of the first interval. According to this, the foaming liquid can be smoothly introduced through the gap between the side plate and the component. Accordingly, it is possible to remove the area to which the foam member does not reach.

Optionally, an extension line of the first plate or an extension line of the second plate may be provided in a non-overlapping manner with the component. According to this, the impact of the plate may not be applied to the latch. Accordingly, it is possible to prevent breakage of the latch.

Optionally, at least one of the first plate and the second plate may be provided in a rectangular shape. Optionally, it may include a first side and a second side facing the first side. Optionally, the heat insulating area (xy plane) of the additional insulator may be provided with a second side larger than the first side. According to this, it is possible to improve the fluidity of the foaming liquid due to the interference of the parts provided in the additional heat insulator.

Optionally, the thickness of the vacuum space portion of the additional insulator in the height direction (y-direction) may be provided on the second side to be greater than the side of the first side. Accordingly, it is possible to allow the foaming liquid to flow through the wider thickness of the second side.

Optionally, the thickness of the insulation in the longitudinal direction (x-direction) of the vacuum space portion of the additional insulator may be greater at the first side than at the second side. According to this, the insufficient insulation performance of the peripheral part due to parts such as the hinge can be supplemented by lengthening the component in the longitudinal direction of the vacuum space. Through this, it is possible to supplement the thermal insulation performance of the periphery of the vacuum insulator on the first side.

Optionally, the rate of change of the insulation thickness in the height direction (y-direction) of the vacuum space portion of the additional insulator may be greater at the first side than at the second side. Optionally, the inclination angle (A) of the second portion of the second plate may be larger toward the first side. Accordingly, it is possible to minimize the interference of parts according to the opening and closing of the door.

Optionally, a hinge may be placed on the side of the first side. Optionally, a latch may be placed on the side of the second side. Accordingly, it may be suitable for use in the door of the vacuum insulator.

Optionally, the hydraulic diameter may be larger at the second side than at the first side. According to this, even if there is resistance of the part on the second side where the part is placed, it is possible to allow the foaming liquid to flow smoothly.

Optionally, the side plate may have a first portion extending in a height direction of the vacuum space portion. Optionally, the side plate may have a second portion extending in a direction different from that of the first portion. According to this, it is possible to provide a sealing part, perform a damping function, or perform a supporting action of a latch.

Optionally, the second portion of the side plate on the side of the first side may not extend to the component. Through this, it is possible to improve the flowability of the foaming liquid.

Optionally, the second portion of the side plate on the side of the first side may maintain a predetermined distance from the component in the longitudinal direction (x-direction) of the vacuum space portion. Through this, it is possible to improve the flowability of the foaming liquid.

Optionally, the second part of the side plate on the side of the first side may not overlap the part in the height direction (y-direction) of the vacuum space part. According to this, the foaming flow can be improved. Accordingly, it is possible to respond to the height of the narrow first side.

Optionally, the second portion of the side plate on the second side may extend beyond the component in the longitudinal direction (x-direction) of the vacuum space portion. According to this, it is possible to respond to an external shock through the latch. Accordingly, it is possible to improve the thermal insulation performance by expanding the vacuum space.

Optionally, the second part of the side plate on the second side may overlap the part in the height direction (y-direction) of the vacuum space part. According to this, the influence of an external shock through the parts can be reduced.

According to another aspect of the present invention, a component at least partially accommodated in the additional heat insulator may be included. Optionally, the side plate may have a first portion extending in a height direction of the vacuum space portion. Optionally, it may have a second portion extending in a different direction than the first portion. Optionally, the component and the second portion of the side plate may be spaced apart. According to this, it is possible to provide a vacuum insulator capable of industrial application by reducing external impact and achieving compact structure.

According to the present invention, it is possible to improve the thermal insulation performance by blocking the heat path that forgets the parts in contact with the external space and the vacuum space part.

According to the present invention, by further expanding the vacuum space to the periphery of the vacuum insulator, it is possible to further improve the thermal insulation performance of the vacuum insulator using the vacuum space.

According to the present invention, it is possible to prevent the sealing portion in which the plate is sealed from being exposed to the external environment, so that the influence of external temperature and humidity does not affect the sealing portion. According to this, the sealing part can maintain sealing performance even with the aging of the vacuum insulator.

According to the present invention, it is possible to reduce the unfilled space of the foam insulation by increasing the fluidity of the foaming liquid to insulate the peripheral portion of the vacuum insulator. Accordingly, it is possible not only to improve the thermal insulation performance, but also to improve the strength of the periphery of the vacuum insulator.

According to the present invention, the impact resistance of the vacuum insulator can be improved by using a member such as a side plate to play a role of damping against external impact.

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 graph for observing the process of evacuating the inside of the vacuum insulator with time and pressure when a support is used.
6 is a graph comparing vacuum pressure and gas conductivity.
7 is a view showing various embodiments of a vacuum space unit.
8 is a view for explaining an additional thermal insulator;
9 is a view for explaining a heat transfer path between first and second plates having different temperatures.
10 is a view for explaining a branch on a heat transfer path between first and second plates having different temperatures;
11 is a view for explaining a method of manufacturing a vacuum insulator.
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 cross-sectional view of the second side of the vacuum insulator.
20 is a view comparing a cross-sectional view of a second side of the vacuum insulator with a cross-sectional view of the first side of the vacuum insulator;
21 is an exploded perspective view of a vacuum insulator;

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 portion may be a space in a vacuum state provided in the inner space between the first plate and the second plate. The sealing unit 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 vacuum degree as the vacuum insulator or a different heat 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 insulator.

In the present invention, the direction along the wall defining the vacuum space portion may include a longitudinal direction of the vacuum space portion and a height direction of the vacuum space portion. The height direction of the vacuum space part may be defined as any one direction of a virtual line connecting the first space and the second space to be described later while passing through the vacuum space part. 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., at least a portion of object A and 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 a 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 conductive 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 a part for sealing the door and the body, an exhaust port necessary for an exhaust process, and a getter port for maintaining a 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 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 the 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 a 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 have elapsed. 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 3 mm, 4.5 mm, and 9 mm. The gap of the vacuum space is defined as follows. When the radiation resistance sheet 32 is 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 if 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 thermal insulation performance of a 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 perimeter 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 extension may be disposed on a peripheral portion 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 to be spaced 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 as 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 than 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 separates and flows in different directions from the heat transfer path flowing along the plate. 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 plate is as follows. It may be any one of the following examples of the present invention or a combination of two or more. The vacuum insulator component preparation step may include manufacturing the plate. Before the vacuum insulator evacuation step is performed, the step of manufacturing the plate may be performed. Optionally, the plate may be made of sheet metal. For example, thin and wide plates can be fabricated using plastic deformation. Optionally, the manufacturing step may include forming the plate. The forming step may be applied to the forming of the side plate, or the forming step may be applied in the process of integrally manufacturing the side plate with at least a portion of the first plate and the second plate. For example, the forming may include drawing. The forming step may include a step in which the plate is partially seated on the support. The forming step may include a step of partially applying a force to the plate. The forming step may include a step in which a part of the plate is seated on a support and a force is applied to the other part of the plate. The forming step may include deforming the plate. The deforming step may include forming at least one curved part on the plate. The deforming step may include changing the radius of curvature of the plate, or the deforming step may include changing the thickness of the plate. As a first example, the step of changing the thickness may include increasing the thickness of a portion of the plate, and the portion may include a portion extending in the longitudinal direction of the inner space (first straight portion). The part may be provided in the vicinity of the part where the plate is seated on the support in the step of forming the plate. As a second example, the step of changing the thickness may include a step of reducing the thickness of a portion of the plate, and the portion may include a portion extending in the longitudinal direction of the inner space (second straight portion). The portion may be provided in the vicinity of a portion to which a force is applied to the plate in the step of forming the plate. As a third example, the step of changing the thickness may include a step of reducing the thickness of a portion of the plate, and the portion may include a portion extending in the height direction of the inner space (second straight portion). The portion may be connected to a portion extending in the longitudinal direction of the inner space of the plate. As a fourth example, the step of changing the thickness includes increasing the thickness of a portion of the plate, wherein the portion is a portion in which the side plate extends in the longitudinal direction of the inner space and in the height direction of the inner space It may include a curved portion provided between the portions (first curved portion). The curved portion may be provided in the vicinity of a portion or a portion on which the plate is seated on the support in the step of forming the plate. As a fifth example, the step of changing the thickness includes reducing the thickness of a portion of the plate, and the portion extends in the height direction of the portion and the portion in which the side plate extends in the longitudinal direction of the inner space and the inner space It may include a curved portion provided between the portions to be formed (second curved portion). The curved portion may be provided in the vicinity of a portion to which a force is applied to the plate in the step of forming the plate. The transforming step may be any one of the above-described examples or an example in which at least two of the above-described examples are combined.

With respect to the plate, the process may optionally include washing the plate. An example of a process sequence related to the step of washing 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, a step of washing the plate may be performed. After the step of manufacturing the plate is performed, at least one of the step of forming the plate and the step of washing the plate may be performed. After the step of forming the plate is performed, the step of washing the plate may be performed. Before the step of forming the plate is performed, a step of washing the plate may be performed. After the step of manufacturing the plate is performed, at least one of a step of providing the fastening part of the part to a part of the plate and a step of washing the plate may be performed. After the step of providing the part fastening part to a part of the plate is performed, the step of washing the plate may be performed.

With respect to the plate, the process may optionally include providing the plate with fasteners. An example of the process sequence related to the step of providing the fastening part 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, a step of providing the part fastening part to a part of the plate may be performed. For example, the step of providing the fastening part may include the step of manufacturing the pipe provided to the part fastening part. The tube may be connected to a portion of the plate. The tube may be disposed in an empty space provided on the plates or an empty space provided between the plates. As another example, the step of providing the fastening part may include providing a through hole in a portion of the plate. As another example, the step of providing the fastening part may include providing a curved part on at least one of the plate and the tube.

The process with respect to the plate may optionally include a process for sealing the vacuum insulator component associated with the plate. An example of the process sequence related to the step of sealing the vacuum insulator component related to the plate 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 providing a through hole in a portion of the plate is performed, at least one of providing a curved portion to at least a portion of the plate and the tube and providing a sealing portion between the plate and the tube may be performed there is. After the step of providing the curved portion to at least one of the plate and the tube is performed, sealing between the plate and the tube may be performed. The step of providing a through hole in a part of the plate and the step of providing a curved part in at least a part of the plate and the tube may be performed simultaneously. The step of providing a through hole in a part of the plate and the step of providing a seal between the plate and the tube may be performed simultaneously. After the step of providing a curved portion to the tube is performed, a step of providing a through hole in a portion of the plate may be performed. Before the vacuum insulator evacuation step is performed, a part of the tube may be provided or sealed to the plate, and after the vacuum insulator evacuation step is performed, another part of the tube may be sealed.

When at least a part of the plate is used integrally with the heat transfer resistor, the example of the process related to the plate may also be applied to the example of the process of the heat transfer resistor.

Optionally, the vacuum insulator may include a side plate connecting the first plate and the second plate. Examples of the side plate 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 side plate may be provided integrally with at least one of the first and second plates. The side plate may be provided integrally with any one of the first and second plates. The side plate may be provided as any one of the first and second plates. The side plate may be provided as a part of any one of the first and second plates. The side plate may be provided as a separate part from the other one of the first and second plates. In this case, optionally, the side plate may be provided to be coupled or sealed with the other one of the first and second plates. The side plate may include a portion having a greater degree of strain resistance than at least a portion of the other one of the first and second plates. The side plate may include a portion having a greater thickness than at least a portion of the other one of the first and second plates. The side plate may include a portion having a smaller radius of curvature than at least a portion of the other one of the first and second plates.

In a similar example to this, optionally, the vacuum insulator is provided to reduce 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. may include 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 resistor may be provided integrally with at least one of the first and second plates. The heat transfer resistor may be provided integrally with any one of the first and second plates. The heat transfer resistor may be provided as any one of the first and second plates. The heat transfer resistor may be provided as a part of any one of the first and second plates. The heat transfer resistor may be provided as a separate component from the other one of the first and second plates. In this case, optionally, the heat transfer resistor may be provided to be coupled to or sealed with the other one of the first and second plates. The heat transfer resistor may include a portion having a higher heat transfer resistance than at least a portion of the other one of the first and second plates. The heat transfer resistor may include a portion having a smaller thickness than at least a portion of the other one of the first and second plates. The heat transfer resistor may include a portion having a smaller radius of curvature than at least a portion of the other one of the first and second plates. The heat transfer resistor may include a portion having a smaller radius of curvature than at least a portion of the other one of the first and second plates.

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, (a) is a vacuum insulator with the left side down and the right side on the top, (b) is a sectional perspective view of 1-1' of (a), (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. The tube 40 is placed on the opposite side of the hinge of the vacuum insulator, it is possible to reduce the 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 on the second 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 part 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 . 19 (a) (b) is a case in which the flange 42 extends inward of the vacuum space portion 50 . 18 (a) and 19 (a) are cases in which the flange 42 overlaps the additional insulator 90 in the first portion 101 of the first plate. 18 (b) and 19 (b) show 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.

The present invention may be any one of the examples presented below or an example in which two or more are combined.

According to the present invention, the vacuum insulator provides the first plate 10 having a first temperature, the second plate 20 having a second temperature different from the first temperature, and the 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 an additional insulator 90 connected to at least a portion of the first plate 10 and the second plate 20 . Examples related to the additional 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 additional insulator may include a portion having a higher height than the vacuum space portion in the Y-axis direction. The additional insulator may include a portion having a height that is at least two times greater than that of the vacuum space portion in the Y-axis direction. The additional insulator may include a portion having a height three times or more greater than that of the vacuum space portion in the Y-axis direction. In these examples, when the additional heat insulating material is manufactured by the foaming liquid, there is an advantage in that the flowability of the foaming liquid is improved.

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, at least a portion of the first plate 10 and the second plate 20 may include a portion extending in the longitudinal direction of the vacuum space portion. Examples related to the above part 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 part may be provided to overlap the part in the height direction of the vacuum space part. In this example, when at least a part of the component is disposed in the central part of the additional heat insulator 90, the thermal insulation performance in the central part can be improved. From another point of view, this example can reduce the damage or deformation of the component 81 due to an external impact. If the component includes a non-metal material and any one of the first and second plates is made of a metal material, the effect may be greater. In the case where the part overlaps the component, it may be advantageous to have a higher height of the additional insulation. The reason is that, when the additional heat insulator is manufactured by the foaming liquid, the flowability of the foaming liquid can be improved. The part may include a part extending in a direction away from the vacuum space part. The portion may extend from a first portion providing a wall defining the vacuum space. The portion may be provided to be spaced apart from the front portion of the vacuum insulator. 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 height direction of the vacuum space part. The predetermined distance may be smaller than at least one height of the vacuum space part. These examples may reduce heat transfer to another part via the part. These examples, from another point of view, by an external impact, it is possible to reduce the damage or deformation of the part or the plate. The part may be provided so as not to overlap the part in the longitudinal direction of the vacuum space part. In this example, it is possible to reduce the damage or deformation of the component due to an external impact. The part may be provided so as not to overlap the part in the depth direction of the vacuum space part. In this example, when the additional heat insulator is manufactured by foaming liquid, it may be advantageous for the foaming liquid to flow under the part. This example may, from another point of view, be advantageous in providing space for another component to be placed on top of the component or below the component. The component may be provided in a central portion of the vacuum insulator in a depth direction of the vacuum space portion. In this example, when the additional heat insulator is made of a foaming liquid, it may be advantageous for the foaming liquid to flow. The reason is that in many cases, the foaming liquid flows from the upper side to the lower side. A passage through which a separate object distinguished from the component passes may be provided at an upper portion or a lower portion of the component in the depth direction of the vacuum space portion. For example, the separate object may provide a passage through which the fluid flows. As another example, the separate object may include at least one of a sensor, lighting, and an image acquisition device (eg, a camera). Another portion of any one of the first and second plates may be provided to cover at least a portion of the additional heat insulator.

Optionally, the vacuum insulator may include a side plate 15 . The side plate may include a portion extending in the longitudinal direction of the vacuum space portion. Since the example relating to the component 81 and the longitudinally extending portion of the side plate overlaps the example relating to the component and the longitudinally extending portion of at least one of the first plate and the second plate, A description is omitted.

Optionally, the vacuum insulator may include a portion in which at least one of the first and second plates 10 and 20 and the side plate 15 are connected. Examples related to the connected part 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 connected portion may be provided to overlap the component in a height direction of the vacuum space portion. In this example, it is possible to reduce the damage or deformation of the component due to an external impact. The connected portion may be provided so as not to overlap the component in the longitudinal direction of the vacuum space portion. The connected portion may be provided so as not to overlap the component in the depth direction of the vacuum space portion. The component may be provided in the central portion of the vacuum insulator in the depth direction of the vacuum space portion. A passage through which a separate object distinguished from the component passes may be provided at an upper portion or a lower portion of the component in the depth direction of the vacuum space portion. For example, the separate object may provide a passage through which the fluid flows. As another example, the separate object may include at least one of a sensor, lighting, and an image acquisition device (eg, a camera). The connected portion may include a portion having a greater degree of strain resistance than at least a portion of the component. For example, the connecting portion may include a metal material, and the component may include a non-metal material. As another example, the connected portion may have a greater thickness than at least one of the first and second plates. As another example, the connected portion may have a greater thickness than at least a portion of the side plate. The connected portion may be provided to be spaced apart from the component by a predetermined distance in a height direction of the vacuum space portion. For example, the predetermined distance may be smaller than the height of the vacuum space part. On the other hand, an example related to the connected portion and the component 81, a portion in which at least one of the first plate and the second plate extend in the longitudinal direction, and a portion overlapping with the example related to the component will be omitted. do.

Optionally, the vacuum insulator may include an additional component provided separately from the component 81 . Examples related to the additional 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 additional component may include a gasket 80 . The additional component may be provided on a portion of the perimeter of the additional thermal insulation 90 . The peripheral portion may be located on the left or right side of the central portion of the additional insulator, and a portion of the peripheral portion may be provided at a portion further spaced apart from a side portion of the vacuum insulator among the left and the right. The additional component may be accommodated in a groove formed in the additional thermal insulation body. A length of the groove in the Y-axis direction may be less than or equal to 1/2 of a height in the Y-axis direction of the additional insulator. The additional component may be provided to overlap a portion of at least one of the first and second plates in a height direction of the vacuum space portion. The part may include a part providing a wall forming the vacuum space part. The portion may be provided to be spaced apart from the front portion of the vacuum insulator. 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 height direction of the vacuum space part. The predetermined distance may be greater than the height of the vacuum space part. The part may be provided so as not to overlap the part in the longitudinal direction of the vacuum space part. The part may be provided so as not to overlap the part in the depth direction of the vacuum space part.

Optionally, the vacuum insulator may include a second additional insulator provided separately from the additional insulator 90 . Examples related to the second additional component 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 may include a portion to which a separate component distinct from the component is connected. Examples of the separate parts are as follows. The separate component may include a hinge. The separate component may be provided so as not to overlap a portion of at least one of the first and second plates in the height direction of the vacuum space. The part may include a part extending in a direction away from the vacuum space part. The extending portion may extend from the first portion providing a wall forming the vacuum space portion. 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 smaller than at least a part of the height of the vacuum space. The part may be provided to overlap the part in the longitudinal direction of the vacuum space part.

Optionally, the vacuum insulator is provided to reduce the heat transfer amount between the first space provided in the vicinity of the first plate 10 and the second space provided in the vicinity of the second plate 20 . Resistors 30 , 31 , 32 , 60 and 63 may be included. 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 resistor may be provided integrally with at least one of the first and second plates. The heat transfer resistor may be provided integrally with any one of the first and second plates. The heat transfer resistor may be provided as any one of the first and second plates. The heat transfer resistor may be provided as a part of any one of the first and second plates. The heat transfer resistor may be provided as a separate component from the other one of the first and second plates. In this case, optionally, the heat transfer resistor may be provided to be coupled to or sealed with the other one of the first and second plates. The heat transfer resistor may include a portion having a higher heat transfer resistance than at least a portion of the other one of the first and second plates. The heat transfer resistor may include a portion having a smaller thickness than at least a portion of the other one of the first and second plates. The heat transfer resistor may include a portion 60 having a smaller radius of curvature than at least a portion of the other one of the first and second plates. The heat transfer resistor may include a portion having a smaller radius of curvature than at least a portion of the other one of the first and second plates.

Optionally, the vacuum insulator may include a side plate 15 connecting the first plate 10 and the second plate 20 . Examples of the side plate 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 side plate may be provided integrally with at least one of the first and second plates. The side plate may be provided integrally with any one of the first and second plates. The side plate may be provided as any one of the first and second plates. The side plate may be provided as a part of any one of the first and second plates. The side plate may be provided as a separate part from the other one of the first and second plates. In this case, optionally, the side plate may be provided to be coupled or sealed with the other one of the first and second plates. The side plate may include a portion having a greater degree of strain resistance than at least a portion of the other one of the first and second plates. The side plate may include a portion having a greater thickness than at least a portion of the other one of the first and second plates. The side plate may include a portion having a smaller radius of curvature than at least a portion of the other one of the first and second plates.

19 is a cross-sectional view of the second side of the vacuum insulator.

Referring to FIG. 19 , the vacuum insulator of the embodiment may include the first and second plates 10 and 20 , the side plate 15 , and the additional insulator 90 . The vacuum insulator may include a latch 81 that expands the action of the vacuum insulator. The latch 81 may fix or separate the device to which the vacuum insulator is applied from another device. The device may be a door, and the other device may be another door or the body 2 of the refrigerator. The vacuum insulator may further include other parts in addition to the latch 81 . Components, including the latch 81 , may be installed in the additional thermal insulation body 90 . Hereinafter, the latch 81 will be described, but the same may be applied to the other components.

An installation area of the latch 81 may be set to a width in the longitudinal direction (X direction) of the vacuum space unit 50 . The 'installation area of the latch 81' may be set to an interval between the virtual line L1 and the virtual line L2.

An installation area of the latch 81 may overlap at least a portion of the second portion 152 of the side plate in a height direction of the vacuum space portion 50 . Accordingly, it is possible to improve the thermal insulation performance of the vacuum insulator by expanding the vacuum space portion 50 to the additional insulator 90 as much as possible. The installation area of the latch 81 may overlap all of the second part 152 of the side plate in the height direction of the vacuum space 50 . Accordingly, the vacuum space portion 50 may further extend to the additional heat insulator 90 to improve the thermal insulation performance of the vacuum insulator. The installation area of the latch 81 may overlap the edge of the second part 152 of the side plate in the height direction of the vacuum space part 50 . Accordingly, the impact applied to the latch 81 may be supported by the second portion 152 of the side plate. The installation area of the latch 81 may overlap a sealing part for fastening the side plate 15 and the first plate 10 in the height direction of the vacuum space part 50 . Accordingly, the vacuum space 50 can be further expanded.

The relationship between the installation area of the latch 81 and the second part 152 of the side plate, and the relationship between the installation area of the latch 81 and the sealing part may be determined upon completion of assembling the vacuum insulator. . The relationship between the installation area of the latch 81 and the second part 152 of the side plate, and the relationship between the installation area of the latch 81 and the sealing part, are not applicable to parts other than the latch 81. It is possible.

When the assembly of the vacuum insulator is completed, the latch 81 and the second part 152 of the side plate are separated by a first interval W1 in the height direction (Y direction) of the vacuum space part 50 . can be separated An additional insulator 90 may be provided at the first gap. The latch 81 and the side plate 15 can be insulated from each other by the additional insulator 90 . When the assembly of the vacuum insulator is completed, the latch 81 and the side plate 15 may be spaced apart from each other to be insulated. When the assembly of the vacuum insulator is completed, the heat conduction path between the latch 81 and the side plate 15 may be blocked. Accordingly, heat transfer through the latch 81 may be reduced.

The latch 81, the sealing part for fastening the side plate 15 and the first plate 10 are spaced apart by a first interval W1 in the height direction (Y direction) of the vacuum space part 50 . can do. An additional insulator 90 may be provided at the first gap. The temperature change of the sealing part may be reduced by the additional insulator 90 . The temperature change of the sealing part is reduced, so that deterioration of the sealing part can be prevented. The deterioration of the sealing part may be deterioration or damage of the sealing part due to a difference between the thermal expansion coefficient of the filler metal and the thermal expansion coefficient of stainless steel.

The first gap W1 may provide insulation between the members. In the insulating action, the insulating relation between the latch 81 and the second part of the side play, the insulating relation between the latch 81 and the side plate 15, and the insulating relation between the latch 81 and the sealing part may include The thermal insulation relationship may be the same even before the assembly of the vacuum insulator is completed. In this case, the thermal insulation relationship can be achieved by the foam insulation. In the interval between the members constituting the thermal insulation relationship, it is possible to smoothly inject the foaming liquid providing the foam insulation material. When the foaming liquid is smoothly injected, it is possible to obtain a foamed insulating material having a uniform density after the foaming liquid is solidified. The thermal insulation performance can be improved by the foamed insulating material of the uniform density.

The foaming liquid may be injected from the top of the vacuum insulator. The foaming liquid may be put downward through the fourth side of the vacuum insulator. Since the injection direction (Z direction) of the foaming liquid is the same as the extending direction of the first interval, the foaming liquid may be more smoothly injected into the first interval.

The extension line L3 of the first plate 10 and the extension line L4 of the second plate 20 do not overlap the latch 81 . The extension line L3 of the first plate 10 and the extension line L4 of the second plate 20 may extend in the longitudinal direction (X direction) of the vacuum space part 50 . Through this, the impact generated by the first plate 10 and the second plate 20 may not be applied to the latch 81 . For example, the impact along the extension line L3 of the first plate 10 and the extension line L4 of the second plate 20 does not directly contact the latch 81 . Since the impact applied to the latch 81 is reduced, damage to the latch 81 can be prevented.

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.

Referring to FIG. 20 , the second side (B) of the vacuum insulator and the first side (A) of the vacuum insulator are different from each other. The additional insulators are different from each other on the first and second sides of the vacuum insulator. A space in which the additional insulator is placed may be defined as the inside of the first plate 10 , the second plate 20 , and the side plate 15 . 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 thickness of the second side may be greater than that of the first side. Accordingly, more additional insulators 90 may insulate the second side, and the heat insulation performance of the second side that the parts such as the latch 81 heighten may be reinforced. The thickness of the insulation in the longitudinal direction (X direction) of the vacuum space portion 50 of the additional insulator 90 is greater on the first side than on the second side. Accordingly, it is possible to reduce the insulation loss leaking to the edge of 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 is greater at the first side than at the second side. Accordingly, it is possible to minimize the interference of parts due to opening and closing of the door on the side where the hinge 21 is placed while reducing the insulation loss. Accordingly, the inclination angle of the second portion 202 of the second plate 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 of the second part 202 of the second plate may be large to prevent the interference.

The additional insulator 90 may use a foamed insulating material. The foamed insulating 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 is 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 may 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 . there is. 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. 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 an external shock can maintain its original design position by such a mutually interconnected structure.

The positional relationship between the second part 152 of the side plate and the component may be similarly applied to the support 30 , the heat transfer resistor 32 , and the vacuum insulation extension part. An example of the heat transfer resistor may be a radiation resistance sheet.

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 part 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, a locking jaw, may protrude out of the through hole 823 . The locking jaw may be caught on the main body.

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.

Referring to FIG. 21 , an inner panel 111 , an outer panel 112 , an upper cover 112 , a lower cover 113 , and a latch 81 may be additionally installed. The inner panel 111 , the outer panel 112 , the upper cover 112 , the lower cover 113 , and the vacuum insulator 11 may form a space into which the foaming liquid is injected. The foaming liquid may be injected to form an additional heat insulator 90 .

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 interior 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. The operation knob may be operated by a user. A user may operate the manipulation knob to release the locking jaw. The door may be opened by operating the operation knob.

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

Claims (19)

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 a vacuum space part;
an additional thermal insulator connected to at least a portion of the first plate and the second plate; and
a latch connected to the additional insulator;
At least a portion of the first plate and the second plate includes a portion extending in the longitudinal direction of the vacuum space portion,
The extended portion is provided to overlap the component in the height direction of the vacuum space portion,
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. The method of claim 1,
The extended portion of the vacuum insulator is provided to be spaced apart from the latch by a predetermined distance in the height direction of the vacuum space. 3. The method of claim 2,
The predetermined distance is a vacuum insulator smaller than the height of the vacuum space. The method of claim 1,
The extended portion of the vacuum insulator is provided so as not to overlap the latch in the longitudinal direction of the vacuum space portion. The method of claim 1,
The extended portion of the vacuum insulator is provided so as not to overlap the latch in the depth direction of the vacuum space portion. 6. The method of claim 5,
The latch is a vacuum insulator provided in a central portion of the vacuum insulator in a depth direction of the vacuum space portion. 6. The method of claim 5,
A vacuum insulator providing a passage through which a separate object distinguished from the latch passes at an upper portion or a lower portion of the latch in the depth direction of the vacuum space portion. 8. The method of claim 7,
The separate object is a vacuum insulator providing a passage through which a fluid flows therein. 8. The method of claim 7,
The separate object is a vacuum insulator comprising at least one of a sensor, lighting, and an image acquisition device. The method of claim 1,
A vacuum insulator comprising an additional part provided separately from the latch. 11. The method of claim 10,
The additional part is a vacuum insulator including a gasket. 11. The method of claim 10,
wherein the additional component is provided in a portion of the periphery of the additional thermal insulation body. 11. The method of claim 10,
The additional component is a vacuum insulator provided to overlap a portion of any one of the first and second plates in a height direction of the vacuum space portion. 14. The method of claim 13,
The part is a vacuum insulator including a part extending in the longitudinal direction of the vacuum space part. 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 a vacuum space part;
an additional thermal insulator connected to at least a portion of the first plate and the second plate;
a latch connected to the additional thermal insulator; and
a side plate connecting the first plate and the second plate;
The side plate includes a portion extending in the longitudinal direction of the vacuum space,
The extended portion is provided to overlap the component in the height direction of the vacuum space portion,
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. 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 a vacuum space part;
an additional thermal insulator connected to at least a portion of the first plate and the second plate;
a latch connected to the additional thermal insulator; and
a side plate connecting the first plate and the second plate;
The side plate includes a portion connected to at least one of the first plate and the second plate,
The connecting portion is provided to overlap the latch in a height direction of the vacuum space portion,
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 17. The method of claim 16,
The connected portion includes a portion having a greater degree of strain resistance than at least a portion of the latch. 17. The method of claim 16,
The connected portion is a vacuum insulator having a greater thickness than at least a portion of any one of the first and second plates. 17. The method of claim 16,
The connected portion is a vacuum insulator having a greater thickness than at least a portion of the side plate.

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