KR20220059367A - Vacuum adiabatic body - Google Patents

Abstract

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

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 the vacuum insulator of Republic of Korea Application Nos. 10-2015-0109724 and 10-2015-0109722.

The vacuum insulator of the cited document provides a wall power of the vacuum space portion with a first plate, a conductive resistance sheet, a side plate, and a second plate. The above cited literature does not suggest a structure and a method for providing a vacuum space unit in consideration of sealing reliability, manufacturing cost reduction, productivity, strength maintenance, thermal insulation performance, and structural strength.

Republic of Korea Application No. 10-2015-0109724, vacuum insulator Republic of Korea Application No. 10-2015-0109722, vacuum insulator

The present invention proposes a vacuum insulator for resolving a sealing defect between members providing a vacuum space portion.

The present invention proposes a vacuum insulator that reduces the manufacturing cost required for manufacturing the vacuum insulator and improves productivity.

The present invention proposes a vacuum insulator capable of maintaining strength even through aging.

The present invention proposes a vacuum insulator capable of reducing heat conduction along the outer wall of the vacuum insulator.

The present invention proposes a vacuum insulator with improved structural strength.

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

Optionally, a side plate extending in the height direction of the vacuum space may be included. According to this, the side surface of the vacuum space part can be defined.

Optionally, the first plate may be provided thinner than the second plate. Through this, the first plate may provide the heat transfer resistor as a thin plate.

Optionally, the first plate may have a conductive resistance sheet. According to this, the function of the conductive resistance sheet may not require a separate member. Accordingly, there is no need for fastening by other methods such as sealing. As a result, it is possible to obtain an advantage that the vacuum space portion is prevented from leaking.

Optionally, the first plate may include a conductive resistance sheet as one body. Accordingly, separate processing may not be required. Accordingly, it is possible to give the function of a conductive resistance sheet by processing a single plate.

Optionally, the side plate may guide the seating of the supporter. For this, a predetermined curved surface may be included. Through this, the operator can conveniently seat the support.

Optionally, it may include a monolith providing the second plate. Optionally, the monolith may include the side plate. Optionally, the side plate may have a first portion of the side plate extending in the height direction of the vacuum space portion. Optionally, the side plate may include a second portion of the side plate bent from the first portion of the side plate. According to this configuration, it is possible to prevent damage by firmly configuring the vacuum space portion. Accordingly, it is possible to prevent deterioration of the vacuum insulator due to aging.

Optionally, the first plate may engage the monolith at a second portion of the side plate. According to this, the sealing part is conveniently processed, and the sealing reliability between the plates is improved.

Optionally, the periphery of the first plate may provide a conductive resistance sheet. Optionally, it is possible to reduce a heat transfer path passing through the conductive resistance sheet to the second plate.

Optionally, the first plate may have a conductive resistance sheet adjacent to the side plate. According to this, since the rectilinear portion of the side plate can be applied as the conduction resistance sheet, the amount of heat conduction can be reduced.

Optionally, in the height direction (Y-axis) of the vacuum space part, it may have a first straight part and a second straight part below the first straight part. Optionally, it may have a third straight part between the first and second straight parts. Optionally, it may have a first curved portion connecting the first and second straight lines. Optionally, it may include a second curved portion connecting the second and third straight lines. Optionally, the third straight part may be provided to be thinner than the first straight part. Accordingly, heat conduction between the first and second plates may be further reduced. It is possible to improve the thermal insulation performance of the vacuum insulator.

Optionally, the third straight part may be provided thinner than the second straight part. Accordingly, heat conduction between the first and second plates may be further reduced. Accordingly, it is possible to improve the thermal insulation performance of the vacuum insulator.

Optionally, the third straight part may be provided as the thinnest among all the straight parts provided on the second plate and the side plate. Accordingly, heat conduction between the first and second plates may be further reduced. Accordingly, it is possible to improve the thermal insulation performance of the vacuum insulator.

Optionally, the first straight part and the second straight part may have the same thickness. According to this, it is possible to maintain the structural strength of the vacuum insulator equally with respect to the internal space and the external space.

In the vacuum insulator of the present invention according to another aspect, the first plate is thinner than the second plate, so that it is possible to provide a conductive resistance sheet included in the heat transfer resistor. According to the present invention, there is an advantage that a separate conductive resistance sheet is not required. Optionally, sealing of the conductive resist sheet may not be required. Accordingly, the fear of vacuum break can be reduced.

Optionally, the conductive resistance sheet may be provided flat. According to this, the number of processing steps is reduced, so that the manufacture of the vacuum insulator can be convenient.

Optionally, the conductive resistance sheet may not have a processed curved portion. In other words, although there may be a slight amount of deformation by the vacuum pressure, it may not be necessary to provide a curved portion that is pre-processed.

Optionally, a side plate extending in the height direction of the vacuum space may be included. Accordingly, the length in the height direction of the vacuum space portion can be defined.

Optionally, the side plate and the second plate may be provided as one body. Accordingly, the vacuum insulator can be conveniently manufactured.

Optionally, the extending direction A of the second plate and the side plate may form an obtuse angle. According to this, the structural strength of the single body can be increased. Optionally, it may comprise a second plate defining at least a portion of the wall for the vacuum space. Optionally, it may include a sealing part sealing the first plate and the second plate so as to provide a third space that is a space between the temperature of the first space and the temperature of the second space and is a space in a vacuum state. there is. Optionally, it may include a supporter for maintaining the third space. Optionally, it may include a heat transfer resistor reducing the amount of heat transfer between the first plate and the second plate. Optionally, it may include a part fastening part connected to at least one of the first and second plates to which the parts are coupled. Optionally, in the height direction (Y-axis) of the vacuum space part, it may have a first straight part and a second straight part below the first straight part. Optionally, it may have a third straight part between the first and second straight parts. Optionally, it may have a first curved portion connecting the first and second straight lines. Optionally, it may include a second curved portion connecting the second and third straight lines. Optionally, the third straight part may be provided thinner than the first straight part or the second straight part.

According to the present invention, it is possible to reduce the conductive heat conducted along the side wall of the vacuum space without having a separate conductive resistance sheet.

Optionally, the first plate may be thinner than the second plate. Optionally, the side plate may be provided as one body with the second plate. According to this configuration, the effect of reducing heat conduction can be further increased.

According to the present invention, there is no need to provide a separate conductive resistance sheet, and the first plate performs the same function. According to this, there is no need to seal the conductive resistance sheet, and product reliability is improved.

According to the present invention, two members are used as a single member, and since the single member can be used as it is, it is possible to achieve reduction in manufacturing cost and improvement in productivity.

According to the present invention, by using a configuration that provides a single sealing portion with a predetermined angle, the structural emphasis of the vacuum insulator can be maintained even through aging.

In the present invention, it is possible to reduce the heat conduction along the wall surface of the vacuum space part without providing a separate conductive resistance sheet by the heat conduction reduction action of the second straight part and the heat conduction reduction action of the first plate.

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.
Fig. 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 manufacturing process of the vacuum insulator.
12 is a view for explaining a conductive resistance sheet placed on a heat transfer path;
13 is a perspective view of a second plate;
14 is a front view and a cross-sectional view of a second plate;
Fig. 15 is an enlarged view of a corner portion of a second plate;
16 is a view showing an embodiment of manufacturing a second plate.
17 and 18 are views showing another embodiment of manufacturing the single body.
19 is a partial sectional perspective view of a vacuum insulator;
Fig. 20 is a partial front view of the cross-sectional view of Fig. 19;
Fig. 21 is a partial cross-sectional view of a single body;
Fig. 22 is a reference view for explaining the curvature of each member of the vacuum insulator of the embodiment;

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, the spirit of the present invention is not limited to the embodiments presented below, and those skilled in the art who understand the spirit of the present invention may add other embodiments included within the scope of the same spirit to components or components, Changes, deletions, and additions may be easily suggested, but this will also be included within the scope of the present invention. The present invention may have many embodiments in which the idea is implemented, and in each embodiment, any part may be replaced with a corresponding part or a part having a related action in another embodiment. The present invention may be any one of the examples presented below or an example in which two or more are combined.

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

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

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

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

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

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

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

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

The plate may include a first plate 10 and a second plate 20 . One surface of the first plate (“the inner surface of the first plate”) provides a wall defining the vacuum space portion, and the other surface of the first plate (“the outer surface of the first plate”) defines the first space wall can be provided. The first space may be a space provided in the vicinity of the first plate, a space formed by the device, or an internal space of the device. In this case, the first plate may be referred to as an inner case. When the first plate and the additional member form the inner space, the first plate and the additional member may be referred to as an inner case. The inner case may include two or more layers. In this case, one of the plurality of layers may be referred to as an inner panel. One surface of the second plate (“the inner surface of the second plate”) provides a wall defining the vacuum space, and the other surface of the second plate (“the outer surface of the second plate”) defines the second space. wall can be provided. The second space may be a space provided near the second plate, another space formed by the device, or an external space of the device. In this case, the second plate may be referred to as an outer case. When the second plate and the additional member form the outer space, the second plate and the additional member may be referred to as an outer case. The outer case may include two or more layers. In this case, one of the plurality of layers may be referred to as an outer panel. The second space may be a space having a higher temperature than the first space or a space having a lower temperature than the first space. Optionally, the plate may include a side plate 15 . In FIG. 2 , the side plate may also perform 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 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. 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 that of at least one of the plate, the radiation resistance sheet, and the support. The radiation resistance sheet may include a portion having a strain resistance smaller than that of at least one of the plate and the support. The plate may include a portion having less strain resistance than the support. The conductive resistance sheet may include a portion having a conductive heat transfer resistance greater than at least one of the plate, the radiation resistance sheet, and the support. The radiation resistance sheet may include a portion having a greater radiation heat transfer resistance than at least one of the plate, the conductive resistance sheet, and the support. The support may include a portion having a greater heat transfer resistance than the plate. For example, at least one of the plate, the conductive resistance sheet, and the connection frame may include stainless steel, the radiation resistance sheet may include aluminum, and the support may include a resin material.

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

While the exhaust step is being performed, an outgassing step, which is a process in which the gas in the vacuum space is exhausted or the potential gas remaining in the parts of the vacuum insulator, is exhausted may be performed. As an example of the outgassing step, the exhausting step includes at least one of heating or drying the vacuum insulator, providing a vacuum pressure to the vacuum insulator, and providing a getter to the vacuum insulator. may include In this case, it is possible to promote the vaporization of the potential gas remaining in the parts provided in the vacuum space portion to be exhausted. The exhausting step may include cooling the vacuum insulator. The cooling step may be performed after the step of heating or drying the vacuum insulator is performed. Preferably, the step of heating or drying the vacuum insulator and the step of providing a vacuum pressure to the vacuum insulator may be performed together. Preferably, the step of heating or drying the vacuum insulator and the step of providing a getter to the vacuum insulator may be performed together. Preferably, after the step of heating or drying the vacuum insulator is performed, the step of cooling the vacuum insulator may be performed. Preferably, the step of providing a vacuum pressure to the vacuum insulator and the step of providing a getter to the vacuum insulator may be performed so as not to overlap. For example, after the step of providing a vacuum pressure to the vacuum insulator is performed, the step of providing a getter to the vacuum insulator may be performed. When 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. 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 heat 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 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 that forms an external appearance 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 a portion where the side plate is formed or to an outside of the side plate. The peripheral insulator disposed on the side plate may extend to a portion where the first plate or the second plate is formed, or may extend to an outer side of the first plate or the second plate. 8G to 8H , the additional insulator may include a central thermal insulator. The central thermal insulator includes at least a portion of a central portion of the vacuum insulator, a central portion of the first plate, and a central portion of the second plate. can be placed in

Referring to FIG. 8A , the perimeter insulation 92 may be placed on the periphery of the first plate. The perimeter insulation may contact the first plate. The peripheral insulator may be separated from the first plate or may extend further (indicated by a dotted line). The peripheral insulation may improve the thermal insulation performance of the peripheral portion of the first plate. Referring to FIG. 8B , the perimeter insulation may be disposed on the periphery of the second plate. The perimeter insulation may contact the second plate. The peripheral insulator may be separated from the second plate or may extend further (indicated by a dotted line). The peripheral insulation may improve the thermal insulation performance of the peripheral portion of the second plate. Referring to FIG. 8C , the perimeter insulation may be disposed on the periphery of the side plate. The peripheral insulation may contact the side plate. The peripheral insulation may be separated from the side plate or may extend further. The peripheral portion insulator may improve the thermal insulation performance of the peripheral portion of the side plate. Referring to FIG. 8D , the peripheral insulation 92 may be placed on the peripheral portion of the first plate. The peripheral insulator may be placed on the periphery of the first plate constituting the vacuum space expansion part 51 . The peripheral insulator may be in contact with the first plate formed by the vacuum space extension. The peripheral insulator may be separated from the first plate constituting the vacuum space extension or may further extend. The peripheral part insulator may improve the thermal insulation performance of the peripheral part of the first plate constituting the vacuum space expansion part. Referring to FIGS. 8E and 8F , in the peripheral insulator, the vacuum space 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 than the extended portion of the second plate. Here, the extended portion may further include a rearwardly extending portion. Referring to FIG. 9C , the first plate may include the extended portion extending to the periphery of the first plate. Here, the extended portion may be shorter or extend the same length as the extended portion of the second plate. Here, the extended portion may further include a rearwardly extending portion.

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

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

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

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

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

An example of the vacuum insulator vacuum evacuation step is as follows. The present invention may be any one of the following examples or an example in which two or more are combined. The vacuum insulator evacuation step may include at least one of a step in which the vacuum insulator is put into the exhaust passage, a getter activation step, a vacuum leak check step, and an exhaust port closing step. The step of forming the fastening part may be performed in at least one of the vacuum insulator component preparation step, the vacuum insulator component assembly step, and the device assembly step. Before the vacuum insulator evacuation step is performed, a step of washing parts constituting the vacuum insulator may be performed. Optionally, the washing step may include applying ultrasonic waves to the parts constituting the vacuum insulator or providing ethanol or a material containing ethanol to the surface of the parts constituting the vacuum insulator. can The ultrasonic wave may have an intensity between 10 kHz and 50 kHz. The content of ethanol in the material may be 50% or more. For example, the content of ethanol in the material may be 50% to 90% or less. As another example, the content of ethanol in the material may be 60% to 80% or less. As another example, the content of ethanol in the material may be 65% to 75% or less. Optionally, after the washing step is performed, a step of drying the parts constituting the vacuum insulator may be performed. Optionally, after the washing step is performed, a step of heating the components constituting the vacuum insulator may be performed.

By way of example, an example of a process with respect to a 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.

As an embodiment, an example of the process in relation to the heat transfer resistor is as follows. The present invention may be any one of the following examples, or a combination of two or more. The vacuum insulator component preparation step may include manufacturing the heat transfer resistor. Before the vacuum insulator evacuation step is performed, a step of manufacturing the heat transfer resistor may be performed. The heat transfer resistor may be made of sheet metal. Optionally, before the vacuum evacuation step of the vacuum insulator is performed, a step of washing the heat transfer resistor may be performed. Optionally, before the vacuum insulator evacuation step is performed, a step of providing the part fastening portion to a portion of the heat transfer resistor may be performed. Optionally, the step of providing the fastening parts may include the step of manufacturing the pipe provided to the parts fastening parts. The tube may be connected to a part of the heat transfer resistor. The tube may be disposed in an empty space provided in the heat transfer resistor or in an empty space provided between the heat transfer resistors. Optionally, the step of providing the fastening part may include providing a through hole in a portion of the heat transfer resistor. Optionally, the step of providing the fastening part may include providing a curved part on at least one of the heat transfer resistor and the tube.

Optionally, a step of deforming the heat transfer resistor may be performed while the vacuum insulator evacuation step is performed. The example of the step of deforming the heat transfer resistor may be applied to the step of deforming the plate. The example of the heat transfer resistor deforming step may be applied when at least a part of the plate and the heat transfer resistor are integrally formed. An example of the heat transfer resistor deforming step is as follows. The present invention may be any one of the following examples, or a combination of two or more. First, the step may include a step in which the heat transfer resistor is depressed in a direction toward the inner space or in a direction toward the outside of the inner space. Through this, the heat transfer path is extended, and heat conduction through the heat transfer resistor can be reduced. Second, the step may include changing the radius of curvature of the heat transfer resistor. For example, the step of changing the radius of curvature may include changing the radius of curvature in at least a portion of a central portion and a peripheral portion of the heat transfer resistor. As another example, the changing the radius of curvature includes changing the radius of curvature in the vicinity of the empty space provided inside the support, or the changing the radius of curvature is in the vicinity of the empty space provided outside the edge of the support. It may include a step in which the radius of curvature is changed. As another example, the step of deforming the radius of curvature may include providing the heat transfer resistor to a portion that does not contact the support. As another example, the step of changing the radius of curvature may include changing the radius of curvature in at least some of the first portion and the second portion of the heat transfer resistor. Here, the first portion of the heat transfer resistor may be a portion forming the vacuum space portion. The second portion of the heat transfer resistor may be a portion extending from the first portion in a direction away from the vacuum space portion. Third, the step may include changing the thickness of the heat transfer resistor. For example, the step of changing the thickness may include the step of changing the thickness in a portion supported by the support. As another example, the step of changing the thickness may include the step of changing the thickness in the vicinity of an empty space provided inside the support. As another example, the step of changing the thickness may include the step of changing the thickness in the vicinity of an empty space provided outside the edge of the support. As another example, the step of deforming the thickness may include providing the heat transfer resistor to a portion that does not contact the support. After the step of changing the radius of curvature or the thickness in the central portion of the heat transfer resistor is performed, the step of changing the radius of curvature or the thickness in the periphery of the heat transfer resistor may be performed. After the step of changing the radius of curvature or thickness is performed in the vicinity of the empty space provided inside the support, the step of changing the radius of curvature in the vicinity of the empty space provided outside the edge of the support can be performed there is. After the step of changing the radius of curvature or the thickness of the first portion of the heat transfer resistor is performed, the step of changing the radius of curvature or the thickness of the second portion of the heat transfer resistor may be performed. During the vacuum evacuation step of the vacuum insulator, the step of deforming the heat transfer resistor may also be applied to the plate, and the same description will be omitted.

The process with respect to the heat transfer resistor may optionally include a process related to the step of washing the heat transfer resistor. An example of a process sequence related to the step of washing the heat transfer resistor is as follows. The present invention may be any one of the following examples, or a combination of two or more. After the manufacturing of the heat transfer resistor is performed, at least one of the manufacturing of the heat transfer resistor and the washing of the heat transfer resistor may be performed. After the step of manufacturing the heat transfer resistor is performed, the step of washing the heat transfer resistor may be performed. Before the manufacturing of the heat transfer resistor is performed, a step of washing the heat transfer resistor may be performed. After the manufacturing of the heat transfer resistor is performed, at least one of a step of providing the part fastening part to a part of the heat transfer resistor and a step of washing the heat transfer resistor may be performed. After the step of providing the part fastening portion to a portion of the heat transfer resistor is performed, the step of cleaning the heat transfer resistor may be performed.

In relation to the heat transfer resistor, the process may optionally include a process related to the step of providing a fastening part to the heat transfer resistor. An example of a process sequence related to the step of providing a fastening part to the heat transfer resistor 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 heat transfer resistor is performed, a step of providing a curved portion to the heat transfer resistor, providing a curved portion to the tube, and providing a sealing portion between the heat transfer resistor and the tube At least one may be performed. After the step of providing a curved portion to at least one of the heat transfer resistor and the tube is performed, sealing between the heat transfer resistor and the tube may be performed. The step of providing a through hole in a portion of the heat transfer resistor and the step of providing a curved part in at least one of the heat transfer resistor and the tube may be simultaneously performed. The step of providing a through hole in a portion of the heat transfer resistor and the step of providing a sealing part between the heat transfer resistor and the tube may be simultaneously performed. After the step of providing a curved part to the pipe connected to the heat transfer resistor is performed, a step of providing a through hole in a part of the heat transfer resistor may be performed. Before the vacuum insulator evacuation step is performed, a part of the tube may be provided or sealed to the heat transfer resistor, and after the vacuum insulator evacuation step is performed, another part of the tube may be sealed.

The process with respect to the heat transfer resistor may optionally include a process associated with the step of providing the heat transfer resistor on at least a portion of the plate. An example of a process sequence related to the step of providing the heat transfer resistor to at least a portion of the plate is as follows. The present invention may be any one of the following examples, or a combination of two or more. Before the vacuum insulator evacuation step is performed, the heat transfer resistor may be connected to at least one of the first plate and the second plate. Before the vacuum insulator evacuation step is performed, the heat transfer resistor may be disposed on a heat conduction path flowing along the inner space. Before the vacuum insulator evacuation step is performed, the heat transfer resistor may be provided in a space between the first plate and the second plate. Before the vacuum insulator evacuation step is performed, the heat transfer resistor may be provided inside the plate or on the surface of the plate. Before the vacuum insulator evacuation step is performed, the heat transfer resistor may be disposed to be supported by at least a portion of the plate. Before the vacuum insulator evacuation step is performed, the heat transfer resistor may be disposed to be supported by a support.

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

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

12, the vacuum insulator of the present invention includes a heat transfer path formed between plates having different temperatures, and optionally, the heat transfer path may include a portion passing through the heat transfer resistor. Examples of the heat transfer resistor as the heat transfer path are as follows. The present invention may be any one of the following examples, or an example in which two or more are combined. 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.

Referring to FIG. 12A , the heat transfer resistor 60 may be provided on the first plate 10 . The heat transfer resistor may be at least one of a radiation resistance sheet 32 , a porous material 33 , a filler, and a conductive resistance sheet. More preferably, the heat transfer resistor may be the conduction resistance sheet. A shielding part for heat insulation or a member for reinforcing strength may be provided on the outer surface of the heat transfer resistor. The heat transfer resistor may be installed in two opposing peripheral portions of the vacuum space 50 . The heat transfer resistor may be installed to be connected to two opposite edges of the vacuum space part. Referring to FIG. 12B , the heat transfer resistor may be provided on the side plate. Referring to FIG. 12C , the heat transfer resistor may be provided on the second plate. 12B and 12C, the relationship between the plate and the heat transfer resistor is the same as in FIG. 12A. 12D , the heat transfer resistor may be provided integrally with the first plate. In this case, the heat transfer resistor may be provided as the first plate or as a part of the first plate. Referring to FIG. 12E , the heat transfer resistor may be provided integrally with the side plate. In this case, the heat transfer resistor may be provided as the side plate or as a part of the first plate. Referring to FIG. 12F , the heat transfer resistor may be provided integrally with the second plate. In this case, the heat transfer resistor may be provided as the second plate or as a part of the second plate.

The vacuum insulator of the present invention may include a heat transfer path formed between plates having different temperatures, and optionally, the heat transfer path may include a portion passing through the side plate 15 . An example of the side plate as the heat transfer mirror 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 side plate 15 may be provided integrally with at least one of the first and second plates 10 and 20 . 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. 12c and 12f may be an example in which the first plate and the side plate are integrally provided. 12A and 12D may be an example in which the second plate and the side plate are integrally provided. 12B and 12E may be an example in which the side plate is provided as a separate component separated from the first plate and the second plate.

One or more embodiments may provide the second plate 20 and the side plate 15 as one body. The second plate 20 and the side plate 15 may be provided by forming a single plate material. The second plate 20 and the side plate 15 may be provided by sheet metal-working. A sealing portion capable of causing vacuum breakage may not be provided at the boundary between the second plate 20 and the side plate 15 . The sealing portion may refer to a portion for fastening the two different plates. For example, the sealing part may be a welding part. There may be no sealing portion at the contact portion between the second plate 20 and the side plate 15 . By removing the sealing part, the vacuum reliability of the vacuum insulator may be improved. Since fastening and sealing between the two members is unnecessary, the speed of mass production can be increased.

13 is a perspective view of the second plate and the side plate, FIG. 14 is a front view (a) and a cross-sectional view (b) of the second plate and the side plate, and FIG. 15 is an enlarged view of part A of FIG. 13 . As an enlarged view, a corner portion of the second plate and the side plate and a non-corner portion adjacent to the corner portion are enlarged. The corner section 211 and the non-corner section 212 are each of a single body 210 (hereinafter referred to as a single body) of the second plate and the side plate provided in a square shape. The corner portion 211 may be the same.

In one or more embodiments, in the height direction (Y-axis) of the vacuum space part 50 , the first straight part 221 , the first curved part 231 , and the third straight part 223 from top to bottom ), the second curved part 232 , and the second straight part 222 may be sequentially provided. The straight part and the curved part may be based on the shape of the single body 210 in the cross-section (XY plane or YZ plane) in the height direction (Y-axis) of the vacuum space part 50. At least the straight part Any part may have a straight shape. At least any part of the curved portion may have a curved shape.

At least a portion of the first straight portion 221 may correspond to the second portion 152 of the side plate. At least a portion of the third straight part 223 may correspond to the first part 151 of the side plate. At least a portion of the second straight portion 222 may correspond to the first portion 201 of the second plate. At least a portion of the first curved part 231 may correspond to an interval between the first straight part 221 and the third straight part 223 . At least a portion of the second curved part 232 may correspond to an interval between the second straight part 222 and the third straight part 223 .

Optionally, in the longitudinal direction (X-axis) of the vacuum space part 50 , the non-corner part 212 and the corner part 211 may be provided in series. For example, the first curved portion 231 formed in the corner portion 211 is the first curved portion 231 formed in the corner portion 211 after the non-corner first curved portion 231 that is the first curved portion 231 formed in the non-corner portion 212 . A corner first curved portion 2311 may be placed. A corner portion 211 and a non-corner portion 212 may be provided in series in the depth direction (Z axis) of the vacuum space portion 50 . The alignment of the corner portion 211 and the non-corner portion 212 may be the same for other corner portions. For example, the ratio of the first curved portion 2311 that is the first curved portion 231 formed in the corner portion 211 to the first curved portion 231 formed in the non-corner portion 212 , for example. A corner first curved portion 2312 may be placed. The same may be said for other curved or straight portions.

Optionally, the thickness of at least a portion of the plurality of curved portions may have a maximum value among the thicknesses of the single body 210 . The thickness of any one of the plurality of curved portions may have a maximum thickness value among each portion of the single body 210 . The curved portion may be placed on a portion connecting the two straight portions. Each of the two straight parts is a member that transmits a force in one direction. The curved portion, the bending stress that transmits the force transmitted from any one of the two straight portions in the other direction may be concentrated. The concentrated bending stress may cause breakage of the curved portion. In order to cope with the concentrated bending stress, the curved portion may be formed thicker than other portions of the single body 210 . For example, points j to o may be provided to be thicker than at least one of points b, f, t to y, and d.

Preferably, the thickness of at least a portion of the first curved portion 231 may have a maximum thickness value among each portion of the single body 210 . The first curved part 231 may connect the second part 152 of the side plate and the first part 151 of the side plate.

Preferably, the second part 152 of the side plate may be fixed by a jig when the single body 210 and the first plate 10 are sealed to each other. Upon sealing, the jig may hold the second portion 152 of the side plate. The second portion 152 of the side plate may support the entire load of the vacuum insulator. Since the first curved part 231 is adjacent to the fixed end of the jig, it may be the thickest among the single bodies 210 . Preferably, the first straight part 221 may be a part to be gripped when assembling and transporting the vacuum insulator. Since the first curved portion 231 is a portion adjacent to the first straight portion 221 , it may be provided to be the thickest among the single body 210 .

Preferably, when sealing the first plate 10 and the single body 210, the two members can be strongly clamped with a jig. At this time, the curved shape of the first plate 10 may be deformed by the applied pressure. In this case, in order to absorb the deformation of the first plate 10 , the first curved portion 231 may be provided to be the thickest among the single body 210 . During sealing, a vacuum pressure may be applied to the contact surfaces of the two plates for close contact between the first plate 10 and the single body 210 . In this case, in order to absorb the deformation of the first plate 10 , the first curved portion 231 may be provided to be the thickest among the single body 210 .

In one or more embodiments, the first straight portion 221 may be a portion extending into the additional insulator 90 . The first curved portion 231 may be provided to be the thickest in the single body 210 . When the additional insulator 90 is mounted, the first straight part 221 may sufficiently resist the force received from the additional insulator 90 . For example, when foaming urethane, the expansion pressure of the foamed urethane may apply a force to the first straight portion 221 . In this case, the first curved portion 231 may sufficiently support the force received by the first straight portion 221 . To this end, the first curved portion 231 may be provided to be the thickest among the plates of the vacuum insulator.

Optionally, the first curved portion 231 may be provided to be the thickest among the single body 210 . When the vacuum space part 50 is evacuated, a strong force due to a pressure difference acts at a point where the first plate 10 and the single body 210 are branched. The branching point of the first plate 10 and the single body 210 may mean a point at which the contact between the first plate 10 and the single body 210 falls. The first curved part 231 may resist a force according to the pressure difference. A branching point between the first plate 10 and the single body 210 may be provided in the first curved part 231 . The branching point between the first plate 10 and the single body 210 may mean a permanent connection, such as sealing.

As described, since the first curved part 231 is provided to be the thickest among the single body 210 , the deformation of the first curved part 231 itself, the deformation of the first straight part 221 , and the relative relationship between each member It is possible to prevent at least one of position movement and distortion of the vacuum insulator.

In one or more embodiments, the first curved portion 231 may include a 1-1 curved portion 2321 adjacent to the first straight portion 221 and adjacent to the third straight portion 223 . It may include a first and second curved portion 2322. The 1-1 curved part 2321 may have a smaller radius of curvature than the 1-2 curved part 2322 . The 1-1 curved portion 2321 is a portion adjacent to the first straight portion 221 and may directly receive a large rotational moment. The 1-1 curved part 2321 may have a smaller radius of curvature than the 1-2 curved part 2322 in order to respond to the large rotational moment. The 1-1 curved part 2321 may be provided to be thicker than the 1-2 curved part 2322 . The 1-1 curved portion 2321 is a portion adjacent to the first straight portion 221 and may receive a large stress. For this reason, it can be provided thicker than the 1-2 curved part 2322 . For example, the point h may be provided with a smaller radius of curvature than the point i and a thicker thickness. Other curved portions may likewise be provided.

In one or more embodiments, the thickness of the central portion of the first curved portion 231 may be greater than the thickness of the peripheral portion of the first curved portion 231 . Through this, the central portion of the first curved portion 231 subjected to a large stress may be more firmly reinforced. Here, the center may mean the center of the first curved portion in the height direction of the vacuum space portion of the single body, that is, the XY plane or the YZ plane of the single body.

In one or more embodiments, in at least one of the plurality of curved portions, the amount of change in thickness per unit length in the corner portion 211 may be greater than the amount of change in thickness per unit length in the non-corner portion 212 . Here, the unit length may be a unit length in the height direction of the vacuum space unit 50 . The corner portion 211 may be subjected to more frequent external impact than the non-corner portion 212 . The corner portion 211 may have a greater external impact than the non-corner portion 212 . The corner portion 211 is a point at which the extension direction is changed, and stress may be concentrated. In order to respond to at least one of the external impact and concentrated stress, the thickness change per unit length of the corner portion 211 may be greater than the thickness change per unit length of the non-corner portion 212 .

Preferably, in the first curved portion 231 , an amount of change in thickness per unit length in the corner portion 211 is greater than an amount of change in thickness per unit length in the non-corner portion 212 . For example, the thickness change amount from the k point to the n point may be larger than the thickness change amount from the p point to the q point. Accordingly, it is possible to withstand external impact and concentrated stress on the first straight portion 221 of the corner portion 211 . The second straight part 222 of the corner part 211 may have a smaller external impact than the first straight part 221 of the corner part 211 .

In one or more embodiments, in at least one of the plurality of curved portions, a thickness of the curved portion placed on the corner portion 211 may be greater than a thickness of the curved portion placed on the non-corner portion 212 . For example, the k point may be provided thicker than the p point. Accordingly, it is possible to more smoothly respond to the external shock and concentrated stress concentrated on the corner portion 211 . The thickness of the corner first curved part 2311 that is the corner part 211 of the first curved part 231 is the non-corner first curved part that is the non-corner part 212 of the first curved part 231 . (2312) can be provided thicker than that.

Preferably, the first curved portion 231 may include the thickest point among the single body 210 . The corner first curved portion 2311 may include the thickest point among the single body 210 . Through this, it is possible to respond to external shock and concentrated stress. The second curved portion 232 may include the thinnest point among the single body 210 . Through this, the number of external shocks is small, the point where the stress is dispersed is thinned, and other parts can be reinforced. For example, point k may be the thickest point, and point n may be the thinnest point. The thickness of the first curved part 231 may be thicker than that of the second curved part 232 . Through this, it is possible to reinforce the part where the stress is concentrated. Here, the thickness of the first curved part 231 and the thickness of the second curved part 232 may be an average thickness of each curved part.

In one or more embodiments, the thickness of the first straight part 221 may be greater than the thickness of the second straight part 222 . The thickness of the second straight part 222 may be greater than the thickness of the third straight part 223 . The thickness of the first straight part 221 may be greatest in order to prevent damage due to the clamping action of the jig. The third straight part 223 is a region to which a small load extending in the height direction of the vacuum space part 50 is applied, and may be provided as the thinnest among the straight parts. For example, point b may be thicker than point d, and point d may be thicker than point f. Here, the thickness of the first, second, and third straight lines may be an average thickness of each of the straight lines.

In one or more embodiments, the first straight part 221 may have the thickest point among the plurality of straight parts in the corner part 211 . The first straight part 221 of the corner part 211 may include the thickest point among the straight parts. Through this, it is possible to respond to external shock and concentrated stress. The second straight part 222 of the corner part 211 may include a thinnest point among the plurality of straight parts. Through this, the number of external shocks is small, the point where the stress is dispersed is thinned, and other parts can be reinforced. For example, point b may be the thickest point among the plurality of linear portions, and point f may be the thinnest point. In the corner part 211 , the first straight part 221 may be thicker than the second straight part 222 . The thickness of the first straight part 221 may be an average thickness of the second straight part 222 .

The present invention may be any one of the following examples or a combination of two or more examples.

According to the present invention, the vacuum insulator provides a first plate 10 having a first temperature, a second plate 20 having a second temperature different from the first temperature, and a vacuum space portion 50. It may include a sealing part sealing the first plate and the second plate. Optionally, the vacuum insulator includes a vacuum insulator component preparation step in which the first plate and the second plate are prepared in advance, a vacuum insulator component assembly step in which the prepared first plate and the second plate are assembled, and the component After the assembling step, it may be manufactured by a vacuum insulator vacuum evacuation step in which the gas in the space formed between the first plate and the second plate is discharged. Optionally, the vacuum insulator may include a side plate connecting the first plate and the second plate. Optionally, the side plate may be provided integrally with any one of the first and second plates. 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 side plate 15 may be provided integrally with any one of the first and second plates 10 and 20 . An example provided in one piece 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 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, 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 have a greater degree of strain resistance than at least a portion of the other one of the first and second plates. For example, the side plate may include a portion having a greater thickness than the other one of the first and second plates. As another example, the side plate may include a portion having a smaller radius of curvature than the other one of the first and second plates. As another example, the side plate may have a radius of curvature smaller than that of at least a portion of the other one of the first and second plates.

Optionally, the side plate 15 may include a portion extending in the height direction of the vacuum space portion 50 . (“Straight part 3 (223)”). Examples related to the portion extending in the height direction 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 extended portion may be provided to be connected to curved portions 231 and 232 provided on the side plate. For example, the extended portion may form a portion of a curved portion provided on the side plate. As another example, the extending portion may include a portion (“straight line portion 3”) that further extends from the curved portion provided on the side plate to the outside of the center of curvature of the curved portion. The extended portion may be provided integrally with any one of the first and second plates. The extending portion may include a portion in which the thickness decreases along the height direction. For example, the extending portion may have a portion having a minimum thickness in the side plate. In this case, the thickness of the extended portion may be reduced, so that heat transfer between the preparations 1 and 2 plates provided via the portion may be reduced. The extended portion may include a portion having a thickness increased in the height direction, or the extended portion may include a portion having a greater thickness than at least a portion of the heat transfer resistor. In this case, the deformation resistance of the extended portion may be reinforced. The extended portion may extend to be inclined with respect to the height direction. In this case, the length of the extended portion may be provided to be greater than the height of the vacuum space portion, so that the heat transfer path passing through the extended portion may be lengthened. Through this, heat transfer between the first and second plates provided via the extended portion may be reduced. In addition, in the process of providing the curved portion of the side plate, it is possible to reduce damage to the curved portion.

Optionally, the side plate 15 may include a portion extending in the longitudinal direction of the vacuum space portion 50 (“straight part 1, 2 (221, 222)”) extending in the longitudinal direction. Examples related to the 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 extended portion may be provided to be connected to a curved portion provided on the side plate. For example, the extended portion may form a portion of a curved portion provided on the side plate. As another example, the extending portion may include a portion further extending outwardly from the curved portion provided on the side plate in the outward direction of the center of curvature of the curved portion. The extended portion may be provided integrally with any one of the first and second plates. (Straight line 2). The extended portion may include a portion having a greater radius of curvature than any one of the first and second plates. In this case, a heat transfer path passing through the extended portion may be lengthened. Accordingly, heat transfer between the first and second plates provided via the extended portion may be reduced. (Linear portion 1) The extending portion may include a portion having a greater thickness than a portion extending in a height direction of the vacuum space portion from the side plate. (Straight line portions 1, 2 > 3) In this case, it may be advantageous because the component is provided in the portion extending in the longitudinal direction. In addition, heat transfer between the first and second plates provided via the portion extending in the height direction may be reduced. The extended portion may include first and second portions (straight line portions 1 and 2) Examples related to the first and second portions are as follows. The first and second portions may be provided to be spaced apart from each other in a height direction of the vacuum space portion. The first portion may include a portion having a greater thickness than at least a portion of the second portion (straight line 1>2). In this case, the first portion may be provided with a sealing portion. In the process of sealing the first part or the vicinity of the first part, damage to the first part can be reduced. In addition, in the case of sealing the heat transfer resistor in the first portion, there is an advantage in that flatness for sealing can be maintained. It may also be advantageous to provide a component in the first part or in the vicinity of the first part. For example, the component may include additional thermal insulation. The first portion may be sealed with any one of the first and second plates, and the second portion may be provided integrally with the other one of the first and second plates. The first portion may include a portion having a greater thickness than at least a portion of any one of the first and second plates, and the second portion may include a portion having a smaller thickness than at least a portion of the first portion. can In this case, optionally, the second portion may include a portion having a greater thickness than at least a portion of any one of the first and second plates. The first portion includes a portion having a larger radius of curvature than at least a portion of at least one of the first and second plates, and the second portion includes a portion having a smaller radius of curvature than at least a portion of the first portion. may include In this case, optionally, the second portion may include a portion having a smaller radius of curvature than at least a portion of any one of the first and second plates.

Optionally, the side plate may be provided on the periphery of the vacuum insulator. For example, the side plate may be provided on at least a portion of a periphery of the first plate and a periphery of the second plate. In this way, consumer sentiment can be improved.

16 is a view showing an embodiment of manufacturing the single body.

Referring to FIG. 16 , the base material, which is a flat plate processed into the single body 210 , is seated on the first restraint frame 310 . The base material may be provided in a square shape. Pressing the periphery of the base material with the second constraint frame 320 can be fixed so that vertical movement is impossible. Between the first constraint frame 310 and the second constraint frame 320, the base material can be fixed without moving up and down. Even when the first and second constraint frames 310 and 320 are constrained, the base material may be partially moved from side to side.

In the inner region of the second constraint frame 320 , the moving frame 330 may move downward to press the base material. The base material may be deformed in contact with at least one of the moving frame 330 and the first constraint frame 310 . At this time, the peripheral portions of the base material constrained by the first and second restraint frames 310 and 320 may move. By deforming the base material, it is possible to process into the shape of the single body 210 . When the displacement of the moving frame 330 is finished, the base material may become the single body 210 . When the displacement of the moving frame 330 is finished, the moving frame 330 and the first constraint frame 310 may have a predetermined distance. According to the spacing, the base material may have the shape of the single body 210 .

In one or more embodiments, the first portion 151 of the side plate may be inclined at an angle from the first portion 201 of the second plate. The first portion 151 of the side plate may extend in a direction away from the second space. The side closer to the first space of the first part 151 of the side plate may be farther from the central part of the vacuum insulator than the side closer to the second space of the first part 151 of the side plate. there is. The first portion 151 of the side plate is wider toward the side closer to the first space. The first portion 151 of the side plate may be provided to be narrower toward the bottom. The support 30 and the heat transfer resistor 32 may be guided by the first portion 151 of the side plate. The support 30 and the heat transfer resistor 32 may be inserted through a side closer to the first space. The support 30 and the heat transfer resistor 32 may be positioned according to the width of the vacuum space in the longitudinal direction. The heat transfer resistor may be a radiation resistance sheet.

17 and 18 are views showing another embodiment of manufacturing the single body.

Referring to FIG. 17 , a base material is fixed between the first restraint frame 310 and the second restraint frame 320 . A periphery of the base material may be exposed to the outside of the first and second restraint frames 310 and 320 . The first moving frame 3301 may move upward to deform the periphery of the base material. The first portion 151 of the side plate may be formed by the upward movement of the first moving frame 330 . A portion to which the first and second restraint frames are fixed may be the first portion 201 of the second plate. When the first processing shown in FIG. 17 is finished, processing for forming the second part 152 of the side plate may be additionally performed.

Referring to FIG. 18 , a third restraint frame 3201 is additionally installed outside the first part 151 of the side plate. Thereafter, the base material may be expanded by pushing the second moving frame 3302 outward. The second portion 152 of the side plate may be formed by the action of the second moving frame 3302 . During the deformation of the base material using the second moving frame 3302, there is a possibility that wrinkles may occur on the surface of the base material.

According to the manufacturing method of this embodiment, three constraint frames 310, 320, 3201 and two moving frames 3301 and 3302 are required, the operation is cumbersome, and the movement and action of the constraint frame and the moving frame are difficult. There are complex problems. According to the manufacturing method of this embodiment, when the thickness of the single body is thick, it is possible to obtain the effect of providing a shape according to the design.

According to the manufacturing method of the two embodiments described above, the base material, in response to the displacement of the moving frame, the action of extension and contraction may occur. The thickness of the base material may be changed after the base material is formed into the unitary body. The thickness of the single body may be different before and after performing the vacuum insulator component forming step of providing a single body that becomes a part of the vacuum insulator. After the vacuum insulator component forming step is performed, the thickness of at least a portion of the plurality of curved portions may be the thickest among the entire area of the single body.

When the vacuum insulator part forming step is performed, at least some of the plurality of curved portions may have a greater thickness than the base material. By increasing the thickness compared to the base material, it can withstand external impact and concentrated stress. For example, compared to the base material, the thickness of the monolith as a whole is reduced, but the thickness may be increased at a specific point. For example, any point of at least a portion of the curved portion may have a maximum thickness among the single body. For example, the corner first curved portion 2311 may be the thickest among the monoliths.

19 is a partial cross-sectional perspective view of the vacuum insulator, FIG. 20 is a partial front view of the cross-sectional view of FIG. 19, and FIG. 21 is a partial cross-sectional view of the single body.

According to an embodiment, the single body 210 may provide the second plate 20 and the side plate 15 as one body. Here, the meaning of one body may mean that the two members form one body without a fastening part such as a sealing part. The single body 210 may provide the first part 201 of the second plate, the first part 151 of the side plate, and the second part 152 of the side plate as one body. At the boundary between the second plate 20 and the side plate 15 , there is no sealing portion capable of causing vacuum breakage. The single body 210 does not require a portion in which the second plate 20 and the side plate 15 are sealed. Here, at least a part of the single body 210 may be a member that provides a wall between the second space and the vacuum space part 50 . The single body 210 may be processed to form an accommodation space. At least a portion of the unitary body 210 may be a member that provides a wall between the additional heat insulator and the vacuum space unit 50 .

The first plate 10 may be provided as a thin plate thinner than that of the second plate 20 . The first plate 10 may be provided as a thinner plate than the side plate 15 . The first plate 10 is a thin plate and may be a heat transfer resistor. The heat transfer resistor may be a conductive resistance sheet. The heat transfer resistor has a small cross-sectional area in a heat flow direction, so it may refer to a sheet that resists heat conduction. The heat transfer resistor may be a thin metal plate. The first plate 10 may include a heat transfer resistor. The first plate 10 may be one body with the heat transfer resistor. The first plate 10 may be provided as a thin metal plate-like member.

The first plate 10 and the single body 210 may use stainless steel as a material. The first plate 10 may be coupled to the single body 210 at the second portion 152 of the side plate. At a contact portion between the first portion 101 of the first plate and the second portion 152 of the side plate, the first plate 10 may serve as a heat transfer resistor. In the first portion 101 of the first plate adjacent to the second portion 152 of the side plate, the first plate 10 may serve as a heat transfer resistor. The first plate 10 may be provided with a flat and long surface without a curved portion. The heat transfer resistor may be provided flat. The heat transfer resistor may not have an artificially processed curved portion except for a curved portion that is naturally contracted and deformed by vacuum pressure.

The heat transfer resistor may not have a curved portion. The heat transfer resistor may be provided as thin as about 0.1 mm. Since the heat transfer resistor is quite thin, if the curved part is artificially provided, it becomes too thin and is vulnerable to breakage. The curved portion may be damaged during the vacuum evacuation process. Since an additional process such as pressing is not required to additionally process the curved portion, it is more convenient. The heat transfer resistor, ie, the first plate 10, preferably has a flat shape without artificially processing a curved portion as in the embodiment. It is preferable that the first plate 10 side of the first plate 10 provides a heat transfer resistor.

The heat transfer resistor may be provided on the first plate 10 side instead of the side plate 15 side. When the heat transfer resistor is provided on the side surface of the vacuum insulator extending in the height direction of the vacuum space part 50, the lateral load received by the heat transfer resistor may be excessively large. Here, the side surface of the vacuum insulator may mean a surface on which the side plate 15 is placed. In this case, the heat transfer resistor may be in contact with the support 30 , thereby increasing the risk of damage to the support 30 . It is preferable that the side plate 15 of the vacuum insulator is provided as one body with the single body 210 rather than the first plate 10 . For example, the first plate 10 may have a thickness of 0.1 mm, and the single body 210 may have a thickness of 0.5 mm.

The extension direction A of the second plate 20 and the side plate 15 may form an obtuse angle. The inner space of the single body 210 may form a convex accommodation space downward. The single body 210 may provide an accommodation space in the form of a basin. The accommodation space may provide the vacuum space part 50 . In the inner space provided by the wall of the second plate 20 and the side plate 15, the support 30 can be conveniently seated from top to bottom. The side plate 15 may guide the seating of the support 30 .

The support 30 may be disposed adjacent to the side plate 15 . The side plate 15 may have a predetermined thickness as one body with the single body 210 and may not be deformed by the vacuum pressure of the vacuum space portion 50 . The distance between the support 30 and the side plate 15 may be shorter than the length of the first straight part 221 . Since the support 30 can maintain the distance between the first plate 10 and the second plate 20 up to the edge of the vacuum space part 50, the outer wall structure of the vacuum space part 50 is made more robust. can be formed Deformation of the vacuum insulator and damage to the first, second, or side plate 15 that may occur in the periphery of the conventional heat transfer resistor can be reduced.

22 is a reference diagram for explaining the curvature of each member of the vacuum insulator of the embodiment.

Referring to FIG. 22 , the first, second, and side plates 10 , 20 , and 15 may have a predetermined curvature to provide a vacuum insulator. Each position of the first, second, and side plates 10, 20, and 15 is described with uppercase letters.

A indicates the first curved portion 231 . The radius of curvature of the first curved part 231 may be provided as 1R on the inside and 1.5R on the outside. Here, R is a dimensionless unit that is compared with the curvature of other regions. The first curved portion 231 preferably has a small radius of curvature for contact with the first plate 10 and formation of the vacuum space portion 50 . However, it is preferable to have a radius of curvature suggested for the breakage of the single body 210 and securing sufficient strength.

B indicates the second curved portion 232 . The radius of curvature of the second curved part 232 may be provided as 1.5R on the inside and 2.0R on the outside.

C is the boundary between the second part 202 and the third part of the second plate, and the radius of curvature may be 4.5R on the inside and 5R on the outside. The boundary portion is a portion capable of forming an exterior, and may be directly touched by the body, so it is preferable to have a smooth curved surface for safety. Since the boundary portion is bent in the XYZ triaxial direction, the radius of curvature is preferably increased.

D is the curvature of the edge of the third part 203 of the second plate. The D is a portion bent along the vacuum space (50). The radius of curvature of the edge may be provided as 1R on the inside and 1.5R on the outside. The edge is a portion in contact with the first plate 10 without direct contact with the consumer.

E indicates the curvature caused by the first portion 101 of the first plate of the first plate 10 being partially supported by the support 30 .

F indicates the curvature caused by the partial support of the first portion 201 of the second plate of the monolith 210 on the support 30 . A radius of curvature of the first portion 101 of the first plate may be smaller than a radius of curvature of the first portion 201 of the second plate.

G is the curvature of the first plate 10 at the interval between the edge of the support 30 and the first straight portion 221 . This curvature may be generated by the vacuum pressure of the vacuum space part 50 . The curvature of the portion G may propagate along the second portion 152 of the side plate.

A curvature of the H portion spaced apart from the G portion toward the edge of the second portion 152 of the side plate may occur. The H portion may be a curvature generated by propagating the thickness difference of the single body 210 and the curvature of the G portion. A radius of curvature of the part G may be smaller than a radius of curvature of the part H. The radius of curvature of the part G and the part H may be smaller than the radius of curvature of the part E.

Referring back to FIG. 15 , in the height direction (Y axis) of the vacuum space part 50 , a first straight part 221 , a first curved part 231 , and a third straight part 223 from top to bottom , the second curved part 232 , and the second straight part 222 may be sequentially provided. The straight part and the curved part may be based on the shape of the single body 210 in a cross-section in the height direction (Y-axis) of the vacuum space part 50 . The straight part and the curved part are the straight parts. At least some portion may be a straight line, and at least some portion of the curved portion may be curved.

At least a portion of the first straight portion 221 may correspond to the second portion 152 of the side plate. At least a portion of the third straight part 223 may correspond to the first part 151 of the side plate. At least a portion of the second straight portion 222 may correspond to the first portion 201 of the second plate. At least a portion of the first curved part 231 may correspond to an interval between the first straight part 221 and the third straight part 223 . At least a portion of the second curved part 232 may correspond to an interval between the second straight part 222 and the third straight part 223 .

The third straight part 223 may be thinner than the first straight part 221 . The third straight part 223 may be thinner than the second straight part 222 . The third straight part 223 may be the thinnest among all the straight parts provided in the single body. The first and second straight portions may be provided to have the same thickness. Since the third straight part 223 serves as a heat transfer path, it is preferable to provide it as thin as possible to improve thermal insulation performance. Since the third straight part 223 is protected by the additional heat insulator from the side of the vacuum space, it is not necessary to be thick.

In any one longitudinal direction (X-axis) or depth direction (Z-axis) of the vacuum space part 50 , a non-corner part 212 and a corner part 211 may be sequentially provided. For example, the first curved portion 231 formed in the corner portion 211 is the first curved portion 231 formed in the corner portion 211 after the non-corner first curved portion 231 that is the first curved portion 231 formed in the non-corner portion 212 . A corner first curved portion 2311 may be placed. In another longitudinal direction (Z-axis) of the vacuum space part 50 , a corner part 211 and a non-corner part 212 may be sequentially provided. The alignment of the corner portion 211 and the non-corner portion 212 may be the same on other corner portions 211 . For example, the ratio of the first curved portion 2311 that is the first curved portion 231 formed in the corner portion 211 to the first curved portion 231 formed in the non-corner portion 212 , for example. A corner first curved portion 2312 may be placed.

The first straight part 221 is a part that provides a sealing surface by the sealing part. The seal may be created by laser welding. The laser welding may be performed by heating each plate using a high-power laser. In order for the fusion of each member to be smoothly performed by the laser welding, it is preferable that the surface to be fused is flat.

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

Claims (23)

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;
a side plate connecting the first plate and the second plate; and
The side plate includes a portion extending in the longitudinal direction of the vacuum space,
The extended portion is provided integrally with any one of the first and second plates,
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 includes a portion further extending outwardly from the curved portion provided on the side plate in an outward direction of the center of curvature of the curved portion. The method of claim 1,
The extended portion is a vacuum insulator including first and second portions. 4. The method of claim 3,
The first and second portions are provided to be spaced apart from each other in a height direction of the vacuum space portion. 4. The method of claim 3,
The first portion is a vacuum insulator including a portion having a greater thickness than at least a portion of the second portion. 4. The method of claim 3,
The first portion is sealed with any one of the first and second plates, and the second portion is provided integrally with the other one of the first and second plates. 4. The method of claim 3,
The first portion includes a portion having a greater thickness than at least a portion of at least one of the first and second plates, and the second portion includes a portion having a smaller thickness than at least a portion of the first portion vacuum insulator. 4. The method of claim 3,
The first portion includes a portion having a larger radius of curvature than at least a portion of at least one of the first and second plates, and the second portion includes a portion having a smaller radius of curvature than at least a portion of the first portion. Including vacuum insulator. 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;
a side plate connecting the first plate and the second plate; and
The side plate is provided integrally with any one of the first and second plates,
The side plate has a greater degree of deformation resistance than the other one of the first and second plates,
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. 10. The method of claim 9,
The side plate is a vacuum insulator including a portion having a greater thickness than the other one of the first and second plates. 10. The method of claim 9,
The side plate is a vacuum insulator including a portion extending in the height direction of the vacuum space portion. 12. The method of claim 11,
The extended portion includes a portion further extending outwardly from the curved portion provided on the side plate in an outward direction of the center of curvature of the curved portion. 12. The method of claim 11,
The extended portion is a vacuum insulator provided integrally with any one of the first and second plates. 12. The method of claim 11,
The extended portion is a vacuum insulator having a portion having a minimum thickness in the side plate. 12. The method of claim 11,
The extended portion is a vacuum insulator having a greater thickness than the heat transfer resistor. 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; and
a side plate connecting the first plate and the second plate;
The side plate is provided integrally with any one of the first and second plates,
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 It is manufactured by the vacuum insulator vacuum evacuation step in which the gas in the space formed between the second plates is discharged,
The vacuum insulator part preparation step includes forming the side plate, and the thickness of a portion of the side plate is changed while the forming step is performed. 17. The method of claim 16,
The forming step is a vacuum insulator comprising the step of partially seating the side plate on the support. 17. The method of claim 16,
The forming step is a vacuum insulator comprising the step of partially applying a force to the side plate. 17. The method of claim 16,
In the forming step, a part of the side plate is seated on a support, and a force is applied to the other part of the side plate. 20. The method of claim 19,
The part is a vacuum insulator including a part extending in the height direction of the vacuum space part. 17. The method of claim 16,
During the forming step is performed, the thickness of a portion of the side plate is thickened vacuum insulator. 22. The method of claim 21,
The part is a vacuum insulator including a part extending in the longitudinal direction of the vacuum space part. 22. The method of claim 21,
The part is a part in which the side plate is partially seated on the support, or a vacuum insulator provided in the vicinity of the part.

Images