KR20180056629A - A refrigerator comprising a vacuum space - Google Patents

Abstract

The present invention relates to a refrigerator including a vacuum space part and, more specifically, relates to a refrigerator forming a vacuum space part between inner and outer cases forming a main body to enhance insulation function of the refrigerator. According to the present invention, the refrigerator comprises a main body including a storage space to store a certain stored material. The main body includes: an inner case having the storage space formed inside and a communication hole formed on one side; an outer case to receive the inner case, wherein an inner surface thereof is spaced apart from an outer surface of the inner case at a predetermined interval and has the communication hole at a position corresponding to a communication hole of the inner case; a vacuum space part disposed between the inner and outer cases, wherein the inside thereof is closed to be maintained in a vacuum state, so as to perform insulation reaction between the inner and outer cases; and a connection pipe connecting the connection hole of the inner case with the connection hole of the outer case in the vacuum space part to form a passage through which a drain or a pipe is passed.

Description

[0001] The present invention relates to a refrigerator having a vacuum space,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a refrigerator having a vacuum space, and more particularly, to a refrigerator capable of improving a heat insulation function of a refrigerator by forming a vacuum space between an outer case and an inner case.

A refrigerator is an electrical appliance that can store refrigerated or frozen storage by keeping the temperature of the storage room at the image or sub-zero temperature using a refrigerant cycle.

A general structure of a refrigerator includes a main body in which a storage space for storing a stored product is formed, and a door that is rotatably disposed or slidably disposed in the main body and opens and closes the storage space.

In the case of the main body, an inner case in which a storage space is formed and an outer case in which the inner case is accommodated are disposed, and a heat insulating material is disposed between the inner case and the outer case.

Such an insulation prevents the temperature inside the storage space from being affected by the external temperature.

As the heat insulating material, a urethane foam material is often used, and a liquid urethane is injected into a space between the inner case and the outer case to perform foam molding.

However, in order to realize the thermal insulation effect by using the heat insulating material, the thickness of the heat insulating material must be secured to some extent, which means that the thickness of the heat insulating material is correspondingly increased. Naturally, the wall thickness between the inner case and the outer case becomes thick, .

However, in recent years, there has been a tendency for the refrigerator to become compact, and a need has arisen for a structure capable of decreasing the size of the internal storage space, while reducing the size of the internal storage space.

Therefore, the present invention proposes a new structure of a refrigerator which does not inject heat insulating material between the inner case and the outer case of the refrigerator but forms a vacuum space part to insulate the refrigerator.

On the other hand, in a refrigerator, a defrosting device is provided which evaporates water vapor in a refrigerating cycle to form a frost.

The water melted by the defrosting device is connected to the outside of the refrigerator through a drain pipe. The drain pipe penetrates the inner case and the outer case and the heat insulating material therebetween and is connected to the outside.

In addition to such a drain pipe, a pipe may be connected to the outside from the inside of the refrigerator.

In the case of a refrigerator in which a foam material is provided in a space between a conventional inner case and an outer case, the pipe simply connects the pipe so as to penetrate the inner case, the heat insulating material and the outer case.

Thus, the pipe is simply made of plastic and is piped so as to pass through the inner case and the outer case, followed by foam molding of the heat insulating material.

However, in the case of the vacuum refrigerator of the present invention, since the piping is connected so as to pass through the vacuum space part, it is necessary to maintain the closed state of the vacuum space part. Therefore, when the plastic pipe is used, There is an unbearable problem.

In addition, in the case of forming the pipe by using a metal pipe which can be welded to the inner case and the outer case which are generally formed of steel plates, there is a problem that the heat insulating performance of the refrigerator is impaired due to heat transfer through the pipe.

SUMMARY OF THE INVENTION The present invention is conceived to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a refrigerator capable of increasing a heat insulation effect by forming a vacuum space between an inner case and an outer case, have.

Another object of the present invention is to provide a refrigerator having a support structure in which a vacuum space is formed between an inner case and an outer case so that the inner case and the outer case are not deformed by an external impact but can maintain the gap.

The present invention also provides a refrigerator including a connection pipe having a structure capable of withstanding vacuum pressure through drainage, piping or a refrigerant pipe passing through a vacuum space.

Also, it is intended to provide a connection tube structure capable of minimizing heat transfer through a connection pipe connected to pass through the vacuum space part.

According to an aspect of the present invention, there is provided a refrigerator including a vacuum space unit including a main body having a storage space for storing a predetermined storage therein, wherein the main body has a storage space formed therein, An inner case formed with a communication hole; An outer case in which the inner case is accommodated and the inner surface of the outer case is spaced apart from the outer surface of the inner case by a predetermined distance and a communication hole is formed at a position corresponding to the communication hole of the inner case; A vacuum space part provided between the inner case and the outer case, the vacuum space part being sealed and kept in a vacuum state to perform a thermal insulation action between the inner case and the outer case; And a connection pipe connecting the communication hole of the inner case and the communication hole of the outer case in the vacuum space part to form a passage through which drainage or piping passes.

The connection pipe is preferably formed in a corrugated shape in order to maintain the strength of the vacuum space to maintain airtightness and to minimize heat transfer by conduction.

The connection pipe is preferably a bellows type pipe.

Preferably, the connection pipe is formed by molding a thin metal plate and welded to the inner case and the outer case, respectively.

The sidewall corrugations of the connection pipe are preferably formed of a thin metal plate having a thickness of 0.05 to 0.2 mm.

The main body includes a first support plate provided on at least one surface of the inner case and the outer case facing each other, and a second support plate fixedly disposed on the first support plate and supporting the gap between the inner case and the outer case It is preferable to further include a plurality of spacers.

The main body may further include a second support plate disposed on at least one of opposite surfaces of the inner case and the outer case facing each other and facing the first support plate.

Preferably, the inner surface of the second support plate includes a plurality of grooves formed to insert the ends of the plurality of spaces.

The connection pipe is preferably spaced apart from the spacer so as not to interfere with the plurality of spacers.

And the connection pipe is welded to the inner case and the outer case through the first support plate and the second support plate, respectively.

Preferably, the connection tube is coated with plastic to prevent corrosion on its inner surface.

According to the refrigerator of the present invention described above, a vacuum space portion, which is not a usual heat insulating material, is formed between the inner case and the outer case, and the heat transfer between the inner case and the outer case is suppressed by the vacuum space portion. Action.

Since the heat insulating effect in a vacuum state is remarkably superior to the heat insulating effect by a usual heat insulating material, the refrigerator according to the present invention has an advantage that it has better heat insulation than a conventional refrigerator.

On the other hand, in the case of the vacuum space part, heat is maintained if it is maintained in a vacuum state regardless of its thickness (the distance between the inner case and the outer case). However, in the case of ordinary heat insulation material, the thickness of the heat insulation material must be increased to increase the heat insulation effect. The increase in thickness will lead to an increase in the size of the refrigerator.

Therefore, the refrigerator according to the present invention can reduce the size of the outer case portion while maintaining the same storage space as that of the conventional refrigerator, thereby contributing to the compactness of the refrigerator.

Also, there is provided a refrigerator including a connection pipe having a structure capable of withstanding vacuum pressure while passing through drainage or piping passing through a vacuum space portion.

In addition, heat transfer through the connection pipe connected to penetrate the vacuum space portion between the inner case and the outer case can be minimized.

Further, since at least a part of the side wall of the connection pipe is formed into a bellows type pipe, elastic deformation is possible, so that durability against external impact is excellent.

1 is a perspective view showing an example of a refrigerator according to the present invention.
2 is a partially cutaway perspective view showing a connection pipe connected through a vacuum space between an inner case and an outer case in a refrigerator according to the present invention.
3 is a partial cross-sectional view showing the connection pipe of FIG. 2 and an inner case and an outer case around the connection pipe.
4 is a perspective view showing the connection pipe of FIG. 3 separately.
5 is a partially cutaway perspective view showing an inner case, an outer case, a spacer therebetween, and an assembly structure thereof.
6 is a partial cross-sectional perspective view showing a state in which the connection pipe of FIG. 4 is welded and assembled to the case structure of FIG.
7 is a cross-sectional view showing that a plastic coating layer is formed on the inner surface of the connector of FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 shows an example of a refrigerator according to the present invention. FIG. 2 is a partially cutaway perspective view showing a connection pipe connected through a vacuum space between an inner case and an outer case in a refrigerator according to the present invention. Fig. 3 is a partial cross-sectional view showing the connection tube of Fig. 2 and an inner case and an outer case around the connection tube. 4 is a perspective view showing the connection pipe separately.

1, a refrigerator according to the present invention includes a main body 1 having a storage chamber, a first door 4 rotatably disposed on the left side of the main body 1, And a second door 5 rotatably provided on the right side of the second door 5.

Here, the first door 4 functions to open and close the freezing room in the storage room, and the second door 5 functions to open and close the refrigerator room in the storage room. However, the present invention is not limited to the refrigerator having such a structure.

That is, the refrigerator of FIG. 1 is a so-called side-by-side type refrigerator in which a freezing chamber is disposed on the left side and a refrigerating chamber is disposed on the right side. In the refrigerator of the present invention, It can be applied to refrigerator. It goes without saying that the present invention may be applied to a refrigerator including a refrigerator or a freezer only, and a refrigerator including a separate refrigerator in addition to a refrigerator and a freezer.

In the structure of the main body 1, an inner case 110 in which the storage space is formed inside; An outer case 120 accommodating the inner case and spaced apart from the inner case by a predetermined distance; A vacuum space part (130) provided between the inner case and the outer case, the vacuum space part (130) being hermetically sealed and kept in a vacuum state to perform a thermal insulation action between the inner case and the outer case; And a connection pipe 200 connecting the communication hole 112 of the inner case and the communication hole 122 of the outer case in the vacuum space part to form a passage through which drainage or piping passes.

The outer case 120 and the inner case 110 are spaced apart from each other. In this space, no separate heat insulating material is disposed, but only a vacuum state is maintained to perform a heat insulating action.

That is, a vacuum space part 130 is formed between the outer case 120 and the inner case 110 so that the medium that mediates the heat transfer between the inner case 110 and the outer case 120 is removed .

Thus, the heat of the hot air outside the outer case 120 can be prevented from being transmitted to the inner case 110 and the inside thereof.

In FIG. 1, the inner case 110, the outer case 120, and the spacers 150 are illustrated with the connection tube 200 omitted.

The connection pipe 200 and the spacer 150 will be described later in detail.

The connection pipe 200 is used as a passage for discharging dehydrated water such as an evaporator or a passage through which a pipe connected from the inside of the inner case 110 to the outside of the outer case 120 can pass .

Since the connection tube 200 must maintain a vacuum state while passing through the vacuum space part 130, it is preferable that the connection parts with the inner case 110 and the outer case 120 are respectively welded to withstand the vacuum pressure.

For this, the inner case 110 and the outer case 120 are all made of steel, so that the connecting pipe 200 is preferably made of a metal material that can be welded to the steel plate.

The connection pipe 200 may be formed in a corrugated shape so as to maintain the airtightness of the vacuum space 130 and to minimize heat transfer by conduction.

The sidewall portion of the connection pipe 200, which has a corrugated shape, is referred to as a sidewall corrugated portion 240.

The sidewall corrugations 240 must withstand the vacuum pressure difference between the inside and outside of the vacuum space part 130, so that the strength should be excellent.

In order to secure a large strength, when a pipe-type connection pipe is simply made of a thick steel plate and welded, the strength may be sufficient, but the heat conduction performance through the connection pipe may be considerably deteriorated.

As shown in FIG. 3, the sidewall corrugations 240 are formed by laminating a plurality of thin metal plates having holes in the sidewall corrugations 240, and sequentially joining inner and outer diameters of the thin metal plates to form a zigzag shape .

The shape of the side wall corrugations 240 may be a bellows type pipe, and the connection pipe 200 of the present invention preferably has at least a part of the side wall thereof in the form of a bellows pipe.

As described above, the sidewall corrugated portion 240 of the connection pipe 200 is manufactured by sequentially laminating the inner diameter portion and the outer diameter portion while laminating the metal thin plates, and the sidewall corrugated portion 240 is again formed in the upper tube portion 220 and the lower tube portion 230 and upper and lower portions thereof.

The upper tube portion 220 and the lower tube portion 230 of the connection tube 200 are each formed in the shape of a circular pipe having a predetermined height, diameter, and thickness and are welded to the side wall corrugated portion 240, .

The height of the upper tube portion 220 and the lower tube portion 230 of the connection tube 200 may be appropriately determined in consideration of the height of the sidewall corrugated portion 240 and the vacuum space portion 130.

For example, when the upper tube portion 220 and the lower tube portion 230 of the connection tube 200 are welded to the outer case 120 and the inner case 110, as shown in FIG. 3, The upper surface of the case 120 and the lower surface of the inner case 110, respectively.

6, when the upper tube portion 220 and the lower tube portion 230 of the connection tube 200 are welded to the outer case 120 and the inner case 110, But may be formed such that the upper surface of the outer case 120 and the lower surface of the inner case 110 are aligned with each other so as not to protrude.

The height of the sidewall corrugations 240 of the connection pipe 200 may be equal to or smaller than the height of the vacuum space 130.

3, the height of the sidewall corrugations 240 is shown to coincide with the height of the vacuum space 130, while in FIG. 6 the height of the sidewall corrugations 240 is greater than the height of the vacuum space 130 As shown in Fig.

The shape of the sidewall corrugated portion 240 of the connection pipe 200 is formed of a thin metal plate. The shape of the sidewall corrugated portion 240 allows the strength of the thin metal plate to withstand the vacuum pressure in the radial direction It is possible to minimize the heat transfer due to conduction by forming the path through which the heat is conducted through the coupling tube 200 to be very long.

The communication holes 112 and 122 (see FIG. 6) are formed in advance in the inner case 110 and the outer case 120, respectively.

The connection pipe 200 is welded to the communication hole 112 of the inner case 110 and the upper pipe member 220 is welded to the communication hole 112 of the outer case 120, And assembled.

The upper tube portion 220, the sidewall corrugated portion 240, and the lower tube portion 230 may be formed by welding the upper tube portion 220, the sidewall corrugated portion 240, and the lower tube portion 230, Or may be integrally manufactured by a pressure molding method.

The connector tube 200 thus manufactured is shown in Fig.

The sidewall corrugations 240 of the connection pipe 200 are preferably formed of a thin metal plate having a thickness of 0.05 to 0.2 mm.

Since the sidewall corrugated portion 240 must withstand the vacuum pressure in the vacuum space portion, the sidewall corrugated portion 240 should have a strength of at least 0.05 mm.

In addition, the sidewall corrugated portion 240 is a passage through which heat is conducted from the outer case 120 to the inner case 110 by conduction, and thus it is preferable that the sidewall corrugation 240 has a thickness of 0.2 mm or less.

The upper tube portion 220 and the lower tube portion 230 may be formed to be thicker than the sidewall wrinkles 240. However, if the upper tube portion 220 and the lower tube portion 230 can hold only the proper strength, it is preferable not to form too thick to reduce heat transfer by conduction will be.

The main body 1 includes a first support plate 160 disposed on at least one surface of the inner case 110 and the outer case 210 facing each other, And a plurality of spacers (150) for supporting the spacing between the case and the outer case.

2, in order to maintain the shape of the vacuum space part 130 between the inner case 110 and the outer case 120, the inner case 110 and the outer case 120, It is preferable that a plurality of spacers 150 for maintaining an interval between the inner case 110 and the outer case 120 are disposed. A plurality of spacers 150 are disposed and supported to maintain a distance between the inner case 110 and the outer case 120.

A plurality of spacers 150 may be fixed between the inner case 110 and the outer case 120. The plurality of spacers 150 may be fixed to the first support plate 160, As shown in Fig.

The first support plate 160 may be disposed on one of surfaces of the inner case 110 and the outer case 120 facing each other.

2, the first support plate 160 is disposed to be in contact with the outer surface of the inner case 110, but the first support plate 160 may be disposed to contact the inner surface of the outer case 120.

5 and 6, the first support plate 160 is disposed so as to be in contact with the outer surface of the inner case 110 and in contact with the inner surface of the outer case 120, 2 support plate 170 so that the spacers 150 of the first support plate 160 may be arranged to contact the second support plate 170.

3, the sidewall corrugations 240 may be formed to have a larger outer diameter than the spacing between adjacent two spacers 150. In other words,

However, as shown in FIG. 2, the coupling tube 200 may be disposed so as not to interfere with the adjacent four spacers 150.

That is, the coupling tube 200 is preferably spaced apart from the spacers 150 so as not to interfere with the plurality of spacers 150.

The connection pipe 200 can be disposed between the first support plate 160 and the second support plate 170 in which the plurality of spacers 150 are disposed, The heat transfer to the spacer 150 can be minimized.

As shown in FIGS. 5 and 6, the main body 1 is disposed on one of opposite surfaces of the inner case 110 and the outer case 120 so as to face the first support plate And a second support plate (170).

5 and 6, the second support plate 170 is disposed to be in contact with the inner surface of the outer case 120, and the plurality of spacers 150 are fixed to the first support plate 160 So as to maintain a gap between the first support plate 160 and the second support plate 170.

Since the first support plate 160 is in contact with the outer surface of the inner case 110 and the second support plate 170 is in contact with the inner surface of the outer case 120, So that the gap between the inner case 110 and the outer case 120 is maintained.

5 and FIG. 6, the second support plate 170 is spaced apart from the first support plate 160 by a predetermined distance. However, as shown in FIG. 2, the plurality of spacers 150 may be integrally formed Only the first support plate 160 fixedly disposed between the inner case 110 and the outer case 120 may be provided.

In the absence of the second support plate 170, the ends of the plurality of spacers 150 may be arranged to directly contact the inner surface of the outer case 120.

It will be understood that the connection pipe 200 is omitted in FIG. 5 for the sake of convenience.

5, the second support plate 170 preferably includes a plurality of grooves 175 formed on the inner surface thereof so as to insert the ends of the plurality of spaces 150 .

The plurality of grooves 175 formed in the second support plate 170 are spaced apart from the spacers 150 when the second support plate 170 is placed in a plurality of spaces 150 formed integrally with the first support plate 160 So that the relative position is fixed.

Further, it is preferable that the ends of the plurality of spacers 150 have a convex curved surface shape.

5, when the ends of the spacers 150 are formed in a convex curved shape, the ends of the spacers 150 are assembled to the groove portions 175 formed in the second support plate 170 The assembly operation can be much easier since it is easily seated.

It is further preferable that the plurality of grooves 175 of the second support plate 170 have a concave curved shape corresponding to the shape of the plurality of spacers 150.

Since the plurality of grooves 175 of the second support plate 170 are formed in a shape corresponding to the shape of the plurality of spacers 150, the positioning of the second support plate 170 can be facilitated during assembly, It can be fixed so as not to move in a direction parallel to the surface.

The connection pipe 200 is welded to the inner case 110 and the outer case 120 through the first support plate 160 and the second support plate 170, respectively.

Referring to FIG. 6, communication holes 112 and 122 are formed in the inner case 110 and the outer case 120, respectively, so that the lower portion and the upper portion of the connection pipe 200 can be welded.

That is, each outer surface of the upper tube portion 220 and the lower tube portion 230 of the connection tube 200 is connected to the communication hole 112 of the inner case 110 and the communication hole 122 of the outer case 120, Respectively.

The first support plate 160 and the second support plate 170 are also formed with communication ports 162 and 172 concentric with the connection pipe 200.

It is preferable that the communication holes 162 and 172 between the first support plate 160 and the second support plate 170 are larger in diameter than the communication holes 112 and 122 of the inner case 110 and the outer case 120 Do.

The inner case 110 and the outer case 120 may be made of steel and the first and second support plates 160 and 170 may be made of metal, ceramics or reinforced plastic.

The first support plate 160 and the second support plate 170, which are structures for supporting the plurality of spacers 150 when the connection pipe 200 is welded to the inner case 110 and the outer case 120, It is preferable that the communication ports 162 and 172 of the case are formed to be larger than the communication ports 112 and 122 of the supporting plate.

Finally, it is preferable that the connection pipe 200 is coated with plastic for preventing corrosion on its inner surface.

The connecting tube 200 made of a thin metal plate may be corroded because the liquid such as water or a refrigerant may flow into the inner surface of the connecting tube 200 or outside air may flow into the connecting tube 200.

Therefore, as shown in FIG. 7, the coating layer 260 is formed on the inner surface of the connection pipe 200 with plastic or the like, thereby preventing corrosion and improving durability.

According to the refrigerator having the vacuum space part of the present invention, there is provided a refrigerator having a connection tube structure capable of withstanding vacuum pressure while passing through drainage or piping passing through the vacuum space part.

In addition, the sidewall of the connection pipe may be formed in a corrugated bellows shape, thereby minimizing the heat transfer through the connection pipe.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, Changes will be possible.

1: Body
4, 5: Door
110: inner case
112:
120: outer case
122:
130: Vacuum space part
150: Spacer
160: first support plate
162:
170: second support plate
172:
175: Groove
200: connector
220: upper tube
230: Lower tube portion
240: sidewall corrugation
260: Coating layer

Claims (21)

A body having a storage space in which a predetermined storage can be accommodated,
The main body includes:
An inner case in which the storage space is formed inside and a communication hole is formed;
An outer case in which the inner case is accommodated and the inner surface of the outer case is spaced apart from the outer surface of the inner case by a predetermined distance and a communication hole is formed at a position corresponding to the communication hole of the inner case;
A vacuum space part provided between the inner case and the outer case, the vacuum space part being sealed and kept in a vacuum state to perform a thermal insulation action between the inner case and the outer case;
A first support plate provided on at least one surface of the inner case and the outer case facing each other;
A plurality of spacers formed integrally with the first support plate so as to be fixedly disposed on the first support plate and supporting the space between the inner case and the outer case to be maintained;
A connection pipe connecting the communication hole of the inner case and the communication hole of the outer case in the vacuum space part and forming a passage through which the drainage pipe or the refrigerant pipe passing through the vacuum space part passes, In addition,
Wherein the connection tube is formed such that a length of a heat conduction path between the inner case and the outer case through the coupling tube is larger than a thickness of the vacuum space part (a distance between the inner case and the outer case) . The method according to claim 1,
Wherein the outer diameter of the connection tube is larger than the diameter of the communication hole of the inner case and the diameter of the communication hole of the outer case. The method according to claim 1,
Wherein the connection pipe is formed of a thin metal plate, and the thickness of the connection pipe is smaller than the thickness of the inner case and the outer case. The method of claim 3,
Wherein the thickness of the connecting pipe is 0.05 to 0.2 mm. The method according to claim 1,
Wherein the connection pipe is connected to a communication port of the inner case or a communication port of the outer case so as to withstand a vacuum pressure through a communication port formed in the first support plate. 6. The method of claim 5,
Wherein the diameter of the communication hole formed in the first support plate is larger than the diameter of the communication hole of the inner case or the communication hole of the outer case. The method according to claim 1,
Wherein the connection tube is configured to be non-interfering with the plurality of spacers. 8. The method according to any one of claims 1 to 7,
Further comprising: a second support plate disposed on at least one of opposite surfaces of the inner case and the outer case, the second support plate being disposed to face the first support plate. 9. The method of claim 8,
Wherein a groove on which the end of the spacer is seated is formed on one side of the second support plate for positioning and fixing after assembling the first support plate and the second support plate. A body having a storage space in which a predetermined storage can be accommodated,
The main body includes:
An inner case in which the storage space is formed inside and a communication hole is formed;
An outer case in which the inner case is accommodated and the inner surface of the outer case is spaced apart from the outer surface of the inner case by a predetermined distance and a communication hole is formed at a position corresponding to the communication hole of the inner case;
A vacuum space part provided between the inner case and the outer case, the vacuum space part being sealed and kept in a vacuum state to perform a thermal insulation action between the inner case and the outer case;
A support structure positioned inside the vacuum space formed between the inner case and the outer case and configured to maintain a gap between the inner case and the outer case; And
A connection pipe connecting the communication hole of the inner case and the communication hole of the outer case in the vacuum space part and forming a passage through which the drainage pipe or the refrigerant pipe passing through the vacuum space part passes, In addition,
The support structure includes:
A first support plate provided on at least one surface of the inner case and the outer case facing each other; And
And a plurality of spacers formed integrally with the first support plate so as to be fixedly disposed on the first support plate and supporting the inner case and the outer case so as to maintain an interval therebetween,
In order to reduce the thickness of the heat conduction path between the inner case and the outer case through the coupling tube, the thickness of the coupling tube is formed to be smaller than the thickness of the inner case and the outer case, Wherein the plurality of spacers are not interfered with the plurality of spacers. 11. The method of claim 10,
Wherein the connecting tube is formed of a thin metal plate. 12. The method of claim 11,
Wherein the thickness of the connecting pipe is 0.05 to 0.2 mm. 11. The method of claim 10,
Wherein the connection pipe is connected to a communication port of the inner case or a communication port of the outer case so as to withstand a vacuum pressure through a communication port formed in the first support plate. 14. The method of claim 13,
Wherein the diameter of the communication hole formed in the first support plate is larger than the diameter of the communication hole of the inner case or the communication hole of the outer case. 11. The method of claim 10,
Wherein the connection tube is configured to be non-interfering with the plurality of spacers. 16. The method according to any one of claims 10 to 15,
Further comprising: a second support plate disposed on at least one of opposite surfaces of the inner case and the outer case, the second support plate being disposed to face the first support plate. 17. The method of claim 16,
Wherein a groove on which the end of the spacer is seated is formed on one side of the second support plate for positioning and fixing after assembling the first support plate and the second support plate. 16. The method according to any one of claims 10 to 15,
Wherein the connection pipe is formed such that the length of the heat conduction path between the inner case and the outer case through the coupling tube is larger than the thickness of the vacuum space part (the distance between the inner case and the outer case) Refrigerator. A body having a storage space in which a predetermined storage can be accommodated,
The main body includes:
An inner case in which the storage space is formed inside and a communication hole is formed;
An outer case in which the inner case is accommodated and the inner surface of the outer case is spaced apart from the outer surface of the inner case by a predetermined distance and a communication hole is formed at a position corresponding to the communication hole of the inner case;
A vacuum space part provided between the inner case and the outer case, the vacuum space part being sealed and kept in a vacuum state to perform a thermal insulation action between the inner case and the outer case;
A support structure positioned inside the vacuum space formed between the inner case and the outer case and configured to maintain a gap between the inner case and the outer case; And
A connection pipe connecting the communication hole of the inner case and the communication hole of the outer case in the vacuum space part and forming a passage through which the drainage pipe or the refrigerant pipe passing through the vacuum space part passes, In addition,
The support structure includes:
A first support surface contacting one of surfaces of the inner case and the outer case facing each other;
A second supporting surface contacting the other surface of the inner case and the outer case facing each other; And
And a spacer provided between the first support surface and the second support surface to support the gap between the inner case and the outer case,
In order to reduce the thickness of the heat conduction path between the inner case and the outer case through the connection pipe, the thickness of the connection pipe may be smaller than the thickness of the inner case and the outer case, Wherein a length of the heat conduction path between the inner case and the outer case is formed to be greater than a thickness of the vacuum space part (a distance between the inner case and the outer case). 20. The method of claim 19,
Wherein the support structure is positioned within the vacuum space portion in a fixed state. 20. The method of claim 19,
Wherein the connection pipe is connected to a communication port of the inner case and a communication port of the outer case so as to withstand a vacuum pressure.

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