RU2807525C2 - Vacuum adiabatic enclosure and refrigerator - Google Patents

Abstract

FIELD: refrigerators.

SUBSTANCE: refrigerator includes a main body and a door containing an outer casing made of a metallic material, an inner casing on which a gasket is located and made of a non-metallic material, and a three-dimensional vacuum adiabatic module located in the gap between the outer casing and the inner casing. Moreover, the three-dimensional vacuum adiabatic module contains a first plate and a second plate, which are provided to define a vacuum area inside it, and at least one of the first plate or the second plate has a thickness less than the thickness of the outer casing. In this case, the three-dimensional vacuum adiabatic module contains at least two extension modules extending in directions different from each other. In another embodiment, the refrigerator includes a first adiabatic module and a second adiabatic module, which are located in the gap between the outer casing and the inner casing.

EFFECT: increased internal volume of the refrigerator and productivity of the ice maker.

20 cl, 42 dwg, 1 tbl

Description

TECHNICAL FIELD

[1] The present disclosure relates to a vacuum adiabatic vessel and a refrigerator.

BACKGROUND OF THE ART

[2] Vacuum adiabatic casing is a product for suppressing heat transfer by vacuuming the inside of its main body. Vacuum adiabatic casing can reduce heat transfer through convection and conduction, and therefore is applicable to heating devices and cooling devices. In a typical adiabatic method applicable to a refrigerator, although it is applied differently in cooling and freezing, a urethane foam adiabatic wall having a thickness of about 30 cm or more is generally provided. However, the internal volume of the refrigerator decreases as a result.

[3] To increase the internal volume of the refrigerator, attempts are being made to apply a vacuum adiabatic body to the refrigerator.

[4] First, Korean Patent No. 10-0343719 (Reference Document 1) of the present applicant was disclosed. According to Reference Document 1, a method is disclosed in which a vacuum adiabatic panel is prepared and then built into the walls of a refrigerator, and the outer side of the vacuum adiabatic panel is trimmed with a separate molding material such as polystyrene foam. According to this method, additional foaming is not required and the adiabatic performance of the refrigerator is improved. However, the manufacturing cost increases and the manufacturing method becomes more complicated.

[5] As another example, a technology for providing walls using a vacuum adiabatic material and, further, providing adiabatic walls using a foam core has been disclosed in Korean Patent Publication No. 10-2015-0012712 (Reference Document 2). In this case also, the manufacturing cost increases and the manufacturing method becomes more complicated.

[6] As another example, attempts are being made to manufacture all the walls of a refrigerator using a vacuum adiabatic body, which is a separate product. For example, a technology for ensuring that an adiabatic refrigerator structure is in a vacuum state has been disclosed in US Patent Laid-Open No. US2040226956A1 (Reference Document 3). However, it is difficult to obtain a practical level of adiabatic effect by supplying a sufficient vacuum to the refrigerator wall. Specifically, there are limitations in that it is difficult to prevent a heat transfer phenomenon in the contact portion between the outer casing and the inner casing having different temperatures, difficult to maintain a stable vacuum state, and difficult to prevent deformation of the casing due to the negative pressure of the vacuum state. Due to these limitations, the technology disclosed in Reference Document 3 is limited to a cryogenic machine and does not provide a level of technology applicable to conventional household appliances.

[7] Alternatively, the present applicant has filed Korean Patent Publication No. 10-2017-0016187 (Reference Document 4), which discloses a vacuum adiabatic housing and a refrigerator. This reference document proposes a separate cooling space, which is made using a separate vacuum adiabatic housing. However, a real refrigerator must be equipped with many storage spaces having different temperatures, but there is a limitation that the generally accepted documents do not take this into account.

[8] In recent years, ice makers have been installed in refrigerators to provide consumers with convenient access to ice. As a conventional technology relating to an ice maker and supplying cold air to the ice maker, the cold air duct structure of a refrigerator, which is disclosed in Korean Patent No. 10-2006-0041437 (Reference Document 5), and a refrigerator in which the ice maker is installed in the main body of the refrigerator, which is disclosed in Korean Patent No. 10-2006-00764610 (Reference Document 6) have been proposed as a form in which an ice maker is installed in a refrigerator cooling compartment door.

[9] In the prior art, a piping is embedded in a foam portion providing a wall of a refrigerator, and cold air is supplied to an ice maker installed in the refrigeration section or an ice maker installed in the freezing section through this embedded piping.

[10] According to the above-mentioned technology, there is a limitation that the internal space of the pipeline is generally reduced because it is difficult to thermally insulate the pipelines to increase the outward flow of cold air, and the thickness of the foam part must be increased to thermally insulate the pipeline. Additionally, in the case of a vacuum adiabatic body, since the interior space of the vacuum region, which is the adiabatic space, is narrow and thin, it is generally impossible to embed piping.

[11] In the case of the door-mounted ice maker disclosed in Reference Document 5, it is difficult to thermally insulate the ice maker, and in particular, it is more difficult to thermally insulate the outer side facing the exterior of the refrigerator than the inner side facing the interior of the refrigerator. The thick part can be inserted to thermally insulate the gap between the ice maker and the outside space, but in this case there is a limitation that the loss of internal space is increased.

DISCLOSURE OF INVENTION

TECHNICAL PROBLEM

[12] Embodiments provide a refrigerator in which loss of cold air from the ice maker is reduced at a door in which the ice maker is installed.

[13] Embodiments also provide an adiabatic housing, which reduces space loss due to the thick wall required for the door to provide ice making space, and a refrigerator.

[14] Embodiments also provide an adiabatic housing in which a complex manufacturing process of a door structure applicable to a refrigerator and a refrigerator are simplified.

THE SOLUTION OF THE PROBLEM

[15] In one embodiment, the vacuum adiabatic body includes: first and second plates configured to provide a vacuum region therein; and an outer casing configured to contact the second plate and made of a metallic material, the outer casing being thicker than at least a portion of at least one of the first plate or the second plate, wherein at least two extension modules extending in directions different from each other, secured in the vacuum region. Accordingly, adiabatic efficiency can be increased in a narrow space using a vacuum region.

[16] At least two extension modules can share a vacuum region to easily and conveniently manufacture a vacuum adiabatic body.

[17] The outer casing may have a thickness greater than that of each of the first plate and the second plate to provide structural strength through the outer casing as well as to increase thermal conduction resistance through the plate.

[18] The vacuum adiabatic body may further include an inner casing connected to the outer casing, the inner casing being made of a non-metallic material which is provided on the side of the first plate such that the component is mounted on the vacuum adiabatic body itself, for improved manufacture and use products.

[19] Foamed adiabatic material can be filled in the space between the inner casing and the outer casing to improve the adiabatic performance.

[20] At least two extension modules may be curved to extend so that they provide a polygonal housing space in the vacuum adiabatic housing, thereby realizing a thermal insulation effect relative to the outside of the housing space. Here, in the placement space, two boundary surfaces having different elongation directions can be thermally isolated by a vacuum adiabatic housing.

[21] Support may be provided separately for each of the extension modules to ensure sufficient structural strength of the vacuum region.

[22] In another embodiment, the refrigerator includes a three-dimensional vacuum adiabatic module located in a gap between an outer casing and an inner casing, the three-dimensional vacuum adiabatic module including a first plate and a second plate that are provided to define a vacuum region therein, and wherein the three-dimensional vacuum adiabatic module includes at least two extension modules extending in directions different from each other. Accordingly, a three-dimensional interior space that is configured to realize a vacuum adiabatic effect can be provided to improve the adiabatic effect.

[23] At least one of the first plate or the second plate may have a thickness less than the thickness of the outer casing to provide an effect of reducing the thermal conductivity of the plate.

[24] The amount of thermal conductivity can increase significantly in the region in which the first and second plates are connected to each other. This area can be aligned adjacent to the gasket to prevent heat transfer outward through the gasket.

[25] The refrigerator may further include a cold air duct located in the interior of the three-dimensional vacuum adiabatic module. In this case, the adiabatic effect of the relatively cold air used for the ice maker provided in the door can be increased to improve the performance of the ice maker, thereby providing a large amount of ice.

[26] The three-dimensional vacuum adiabatic module may include: a first extension module, at least a portion of which extends along a front surface of the door; and a second extension module, at least a portion of which extends along a side surface of the door, to more accurately provide adiabatic space in the interior space than in the exterior space. In other words, since transverse thermal conduction is blocked, large adiabatic performance can be realized in the internal space of the three-dimensional vacuum adiabatic module.

[27] At least one side surface of the second extension module may be filled with adiabatic foam material to improve the adiabatic effect relative to the door.

[28] Both side surfaces of the second extension module may be filled with adiabatic foam material to increase the structural strength of the mechanical structure, thereby realizing a greater adiabatic effect.

[29] The first extension module and the second extension module can be curved as a single body for passage to more accurately and conveniently provide an adiabatic space within them.

[30] The first extension module and the second extension module may share a vacuum region to simplify the fabrication space.

[31] The refrigerator may further include a third extension module bent from an end of the second extension module to provide adiabatic space in more varied shapes using a three-dimensional vacuum adiabatic module.

[32] The second plate may be in contact with the outer casing, and the adiabatic foam material may be filled on the outside of the second plate to provide sufficient strength and adiabatic performance.

[33] The inner casing may extend into the housing space to define a wall portion of the housing space, whereby components are shared when the refrigerator is manufactured, and these components are simplified.

[34] In yet another embodiment, the refrigerator includes: a main body having a housing space and an opening configured to provide access to the housing space; and a door configured to open and close the housing space, the door including a vacuum adiabatic module located in a gap between the outer casing and the inner casing and including a first adiabatic module and a second adiabatic module for defining a vacuum region therein. A separate outer casing, which is separate from the plate, can be provided in the vacuum adiabatic casing to obtain an adiabatic effect through the plate and provide sufficient structural strength through the outer casing.

[35] The vacuum adiabatic module includes at least two extension modules having extension directions different from each other to more accurately provide a space that is thermally isolated by using the vacuum adiabatic module.

PREFERABLE EFFECTS OF THE INVENTION

[36] According to this embodiment, sufficient adiabatic effect on the door-mounted ice maker can be provided to improve the performance of the ice maker and increase customer satisfaction.

[37] Since the space required for thermal insulation of a refrigerator door is reduced, the space in the door in which the product is placed can be increased.

[38] According to this embodiment, the structural strength of the outer shell and the reduction in thermal conductivity due to the plate can be achieved together to simplify the manufacture of the door structure of the refrigerator.

BRIEF DESCRIPTION OF THE DRAWINGS

[39] FIG. 1 is a perspective view of a refrigerator according to one embodiment.

[40] FIG. 2 is a view schematically showing a vacuum adiabatic body used in the main body and door of a refrigerator.

[41] FIG. 3 is a view showing the internal configuration of a vacuum region according to various embodiments.

[42] FIG. 4 is a view showing a thermal conductivity resistance sheet and peripheral parts thereof according to various embodiments.

[43] FIG. 5 is a graph showing the change of the adiabatic characteristic and the change of the thermal conductivity of the gas according to the vacuum pressure when applying the simulation.

[44] FIG. 6 is a graph showing results obtained by observing the time and pressure during the vacuum process of the interior of the vacuum adiabatic body when using a support.

[45] FIG. 7 is a graph showing results obtained by comparing vacuum pressure with thermal conductivity of gas.

[46] FIG. 8 is a schematic perspective view of a cold air duct for making ice in a refrigerator according to one embodiment.

[47] FIG. 9 is a schematic cross-section of a cold air passage for making ice on the freezer side of a refrigerator according to one embodiment.

[48] FIG. 10 is a schematic cross-section of a cold air passage for making ice on the cooling compartment side of a refrigerator according to one embodiment.

[49] FIG. 11 is a front perspective view showing the connecting end between the first and second cold air passages for making ice in the refrigerator.

[50] FIG. 12 is a rear perspective view showing the connecting end between the first and second door-side ice-making cold air passages in the refrigerator.

[51] FIG. 13 is a view for explaining the relationship between the cold air channel for making ice and the baffle.

[52] FIG. 14 is a view for explaining the structure on which the partition is located.

[53] FIG. 15 is a side perspective view for explaining the installation of a cold air channel for making ice and an adiabatic structure in a refrigerator.

[54] FIG. 16 is a schematic perspective view of a cold air passage for making ice in a refrigerator according to another embodiment.

[55] FIG. 17 is a view showing the relationship between the partition and the door according to another embodiment.

[56] Fig. 18 and 19 are views for explaining the switching structure of the cold air passage for making ice, wherein Fig. 18 is a view showing the partition side and Fig. 19 is a view showing the door side.

[57] FIG. 20 is a perspective view of a refrigerator in which each vacuum adiabatic body provides each storage space.

[58] FIG. 21 is a perspective view of a refrigerator in a state in which a gap maintaining portion is provided in a connecting portion between the vacuum adiabatic bodies.

[59] FIG. 22 is an enlarged view of the ice making connecting channel.

[60] FIG. 23 is a cross-section of the ice making connecting channel taken along line AA'.

[61] FIGS. 24 to 27 are views of a refrigerator in which a cooling section and a freezing section are respectively provided with two vacuum adiabatic bodies shown in FIGS. 20 to 23, and a cold air passage for making ice is provided at the bottom surface of the door, according to one embodiment.

[62] FIG. 28 is an exploded perspective view showing a cold air channel door for making ice embedded in a foam material.

[63] FIG. 29 is a horizontal cross-section of the space in which the ice maker in FIG. 28 is installed.

[64] FIG. 30 is an exploded perspective view of a door according to one embodiment.

[65] FIG. 31 is a horizontal cross-section of a space in which an ice maker is installed, according to one embodiment.

[66] FIG. 32 is a perspective view of a first vacuum adiabatic module according to one embodiment.

[67] FIG. 33 is an exploded perspective view of a door according to another embodiment.

[68] FIG. 34 is a perspective view of a first vacuum adiabatic module according to another embodiment.

[69] FIGS. 35 to 37 are views showing the thermal efficiency of a cold air duct for making ice embedded in a foam material and a cold air duct for making ice according to one embodiment, where FIG. 35 shows a case in which a cold air duct is installed ice making air built into the foam material, and the adiabatic panel, FIG. 36 shows a case in which the side panel ice making cold air channel and the first vacuum adiabatic module are installed, and FIG. 37 shows a case in which the cold air channel is installed for making ice partitions and a second vacuum adiabatic module.

[70] FIG. 38 is a cross-section of a door in which the ice maker and the door side basket are installed.

[71] FIG. 39 is an enlarged view of the corner of FIG. 38.

[72] FIG. 40 is a cross-section of a door in which a three-dimensional multi-bend vacuum adiabatic module is applied according to another embodiment.

[73] FIG. 41 is a cross-section of a door in which a three-dimensional multi-bend vacuum adiabatic module is applied according to another embodiment.

[74] FIG. 42 is a cross-section of a door using a three-dimensional vacuum adiabatic module, according to another embodiment.

OPTION FOR IMPLEMENTATION OF THE INVENTION

[75] Next, illustrative embodiments will be described with reference to the accompanying drawings. However, the present invention can be implemented in many other forms and should not be construed as limited to the embodiments set forth herein, and one skilled in the art who understands the essence of the present invention can easily implement other embodiments contained within the scope of the same inventive concept , by adding, changing, deleting, and adding components; in other words, it should be understood that they are also contained within the scope of the present invention.

[76] Further, for the purpose of describing embodiments, the drawings shown below may be shown with differences from the actual product or exaggerated, or simple or detailed parts may be deleted, but this is for the purpose of facilitating understanding of the technical idea of the present invention. This should not be construed as a limitation. However, as far as possible, the actual shape will be shown.

[77] The following embodiments may be applied to the description of another embodiment as long as the other embodiment is not inconsistent with them, and some configurations of any of the embodiments may be modified to a state in which only a specific part is modified to a different configuration.

[78] In the following description, vacuum pressure means any state of pressure less than atmospheric pressure. Additionally, the expression “the degree of vacuum in A is greater than the degree of vacuum in B” means that the vacuum pressure in A is less than the vacuum pressure in B.

[79] FIG. 1 is a perspective view of a refrigerator according to one embodiment.

[80] Referring to FIG. 1, the refrigerator 1 includes a main body 2 provided with a cavity 9 capable of storing stored goods, and a door 3 provided for opening and closing the main body 2. The door 3 can be movably rotatable. or sliding to open/close the cavity 9. The cavity 9 may provide at least one of a cooling compartment and a freezing compartment.

[81] Components forming a refrigeration cycle in which cold air is supplied to the cavity 9. Specifically, these components include a compressor 4 for compressing refrigerant, a condenser 5 for condensing the compressed refrigerant, an expander 6 for expanding the condensed refrigerant, and an evaporator 7 to evaporate the expanded refrigerant to extract heat. As a typical design, the fan may be mounted in a position adjacent to the evaporator 7, and fluid blown from the fan may pass through the evaporator 7 and then blown into the cavity 9. The thermal load during freezing is controlled by adjusting the blow intensity and blow direction of the fan, by setting the amount of refrigerant circulating, or by setting the compression ratio of the compressor so that the refrigeration space or the freezing space can be controlled.

[82] FIG. 2 is a view schematically showing a vacuum adiabatic body used in the main body and door of a refrigerator. In Fig. 2, the main body side vacuum adiabatic body is shown in a state in which the walls of the top and side surfaces are removed, and the door side vacuum adiabatic body is shown in a state in which part of the front surface wall is removed. Additionally, for ease of understanding, cross-sections of portions of the provided thermal conductivity resistance sheets are shown schematically.

[83] Referring to FIG. 2, the vacuum adiabatic body includes a first plate 10 for providing a wall of a low temperature region, a second plate 20 for providing a wall of a high temperature region, a vacuum region 50 defined as a gap between the first and second plates 10 and 20. Also, the vacuum adiabatic body includes thermal conduction resistance sheets 60 and 63 for preventing thermal conduction between the first and second plates 10 and 20. A seal 61 for sealing the first and second plates 10 and 20 is provided such that the vacuum region 50 is in a sealed state. When a vacuum adiabatic housing is used in a refrigerator or heating device, the first plate 10 may be called an inner shell, which is installed inside the control space that controls the temperature, and the second plate 20 may be called an outer shell, which is installed outside the control space. The machine room 8 housing the components providing the refrigeration cycle is located on the lower rear side of the main body side vacuum adiabatic housing, and a vacuum port 40 for generating a vacuum state by vacuuming the air in the vacuum region 50 is provided on each side of the vacuum adiabatic housing. Additionally, a conduit 64 passing through the vacuum region 50 may be further installed to install a melt water line and electrical lines.

[84] The first plate 10 may define at least a portion of the wall for the first region provided. The second plate 20 may define at least a portion of the wall for the second region provided. The first region and the second region can be defined as regions having different temperatures. Here, the wall for each region may serve not only as a wall directly in contact with that region, but also as a wall not in contact with that region. For example, the vacuum adiabatic body of this embodiment can also be applied to an article further having a separate wall contacting each area.

[85] The heat transfer factors that cause the loss of adiabatic effect of the vacuum adiabatic body are: thermal conductivity between the first and second plates 10 and 20, heat radiation between the first and second plates 10 and 20, and thermal conductivity of the vacuum region gas 50.

[86] Next, a thermal resistance block will be provided to reduce adiabatic losses associated with heat transfer factors. Meanwhile, the vacuum adiabatic body and the refrigerator of this embodiment do not exclude that another adiabatic means can be further provided on at least one side of the vacuum adiabatic body. Thus, an adiabatic means using foaming or the like can be further provided for the other side of the vacuum adiabatic body.

[87] FIG. 3 is a view showing the internal configuration of a vacuum region according to various embodiments.

[88] Firstly, with reference to FIG. 3A, the vacuum region 50 may be provided in a third region having a pressure different from the pressure in each of the first and second regions, preferably a vacuum state, whereby adiabatic losses are reduced. The third region may be provided with a temperature between the temperature of the first region and the temperature of the second region. Since the third region is provided as a region in a vacuum state, the first and second plates 10 and 20 are subject to a compressive force in the direction in which they approach each other due to a force corresponding to the pressure difference between the first and second regions. Thus, the vacuum region 50 can be deformed in a direction in which the vacuum region 50 decreases in volume. In this case, the adiabatic loss may be caused by an increase in the amount of heat radiation caused by the compression of the vacuum region 50, and an increase in the amount of thermal conductivity caused by the contact between the plates 10 and 20.

[89] A support 30 may be provided to reduce deformation of the vacuum region 50. The support 30 includes a rod 31. The rod 31 may extend in a substantially vertical direction relative to the plates to maintain a distance between the first plate and the second plate. A support plate 35 may be further provided at at least either end of the rod 31. The support plate 35 may connect at least two or more rods 31 to each other to extend in a horizontal direction relative to the first and second plates 10 and 20. The support plate 35 may be provided in the form of a plate or may be provided in the form of a lattice so that the area of the support plate in contact with the first and second plates 10 and 20 is reduced, whereby heat transfer is reduced. The rods 31 and the support plate 35 are attached to each other in at least one part for insertion together between the first and second plates 10 and 20. The support plate 35 contacts at least one of the first and second plates 10 and 20, thereby preventing deformation of the first and second plates 10 and 20. Additionally, based on the running direction of the rods 31, the total cross-sectional area of the support plate 35 is ensured that it is larger than the cross-sectional area of the rods 31, so that heat transmitted through the rods 31 can be dissipated through the support plate 35.

[90] The support 30 can be made of a polymer selected from PC, fiberglass PC, low degassing PC, PPS, and LCP to obtain high compressive strength, low degassing rate and water absorption rate, low thermal conductivity, high strength at high temperature compression, and excellent workability.

[91] A radiation resistance sheet 32 will be described for reducing the radiation of heat between the first and second plates 10 and 20 through the vacuum region 50. The first and second plates 10 and 20 may be made of a stainless material capable of preventing corrosion and providing sufficient strength. Because stainless material has a relatively high emissivity of 0.16, a large amount of radiated heat can be transferred. Additionally, the support 30, made of polymer, has a lower emissivity than the plates and is not fully supported on the inner surfaces of the first and second plates 10 and 20. Thus, the support 30 does not have much effect on the radiated heat. Thus, the radiation resistance sheet 32 can be provided in the form of a plate over most of the area of the vacuum region 50 to reduce radiant heat transferred between the first and second plates 10 and 20. An article having a low emissivity can be used as a material sheet 32 radiation resistance. In one embodiment, aluminum foil having an emissivity of 0.02 can be used as the radiation resistance sheet 32. Also, since the transfer of radiated heat may not be sufficiently blocked by using one radiation resistance sheet, at least two radiation resistance sheets 32 can be provided at some distance so that they do not contact each other. Also, at least one radiation resistance sheet may be provided in a state of contact with the inner surface of the first or second plates 10 and 20.

[92] Referring again to FIG. 3b, the distance between the plates is maintained by the support 30, and the porous material 33 can fill the vacuum region 50. The porous material 33 can have a higher emissivity than the emissivity of the stainless material of the first and second plates 10 and 20 However, since the porous material 33 fills the vacuum region 50, the porous material 33 has high efficiency for resisting radiation heat transfer.

[93] In this embodiment, the vacuum adiabatic body can be manufactured without the radiation resistance sheet 32.

[94] Referring to FIG. 3c, a support 30 for maintaining the vacuum region 50 may not be provided. The porous material 33 may be provided so that it is surrounded by the film 34 instead of the support 30. Here, the porous material 33 may be provided in a state in which it is compressed such that a vacuum region gap is maintained. The film 34, made of PE material for example, can be provided in a state in which a hole is punched in the film 34.

[95] In this embodiment, the vacuum adiabatic body can be manufactured without the support 30. In other words, the porous material 33 can perform the function of the radiation resistance sheet 32 and the function of the support 30.

[96] FIG. 4 is a view showing a thermal conductivity resistance sheet and peripheral parts thereof according to various embodiments. The structure of each of the thermal conductivity resistance sheets is briefly shown in FIG. 2, but will be explained in detail with reference to the drawings.

[97] First of all, the thermal conductivity resistance sheet proposed in Fig. 4a can be used in the main body side vacuum adiabatic housing. Specifically, the first and second plates 10 and 20 must be sealed so that the interior of the vacuum adiabatic body is evacuated. In this case, since the two plates have different temperatures from each other, heat transfer may occur between the two plates. The thermal conductivity resistance sheet 60 is provided to prevent thermal conduction between two different kinds of plates.

[98] The thermal conductivity resistance sheet 60 may be provided with a seal 61 with which both ends of the thermal conductivity resistance sheet 60 are sealed to define at least a portion of the wall for the third region and maintain a vacuum state. The thermal conductivity resistance sheet 60 may be provided as a micron-thick thin foil to reduce the amount of heat conducted along the wall for the third region. The seals 61 may be provided as a weld. Namely, the thermal conductivity resistance sheet 60 and the plates 10 and 20 can be fused to each other. To cause a fusion effect between the thermal conductivity resistance sheet 60 and the plates 10 and 20, the thermal conductivity resistance sheet 60 and the plates 10 and 20 can be made of the same material, and a stainless material can be used as this material. The seal 61 is not limited to a weld and may be provided through a process such as a skew joint. The thermal conductivity resistance sheet 60 may be provided in a curved shape. Thus, the thermal conductivity distance of the thermal conductivity resistance sheet 60 is made greater than the linear distance of each of the plates, so that the thermal conductivity amount is further reduced.

[99] A temperature change occurs along the thermal conductivity resistance sheet 60. Thus, to block heat transfer to the outside of the thermal conductivity resistance sheet 60, a screen 62 may be provided at the outer side of the thermal conductivity resistance sheet 60 so that an adiabatic effect occurs. In other words, in the case of a refrigerator, the second plate 20 has a high temperature and the first plate 10 has a low temperature. Additionally, thermal conductivity from high temperature to low temperature occurs in the thermal conductivity resistance sheet 60, and therefore, the temperature of the thermal conductivity resistance sheet 60 changes rapidly. Thus, when the thermal conductivity resistance sheet 60 is open with respect to its outer side, heat transfer through the open space can actually occur. To reduce heat loss, a screen 62 is provided on the outside of the thermal conductivity resistance sheet 60. For example, when the thermal conductivity resistance sheet 60 is exposed to any of the low temperature region and the high temperature region, the thermal conductivity resistance sheet 60 does not serve as a conductive resistor nor as an exposed portion thereof, which is not preferable.

[100] The screen 62 may be provided as a porous material in contact with the outer surface of the thermal conductivity resistance sheet 60. The screen 62 may be provided as an adiabatic structure, such as a separate spacer, which is positioned against the outside of the thermal conductivity resistance sheet 60. The screen 62 may be provided as a vacuum adiabatic body portion that is provided at a position facing the corresponding thermal conductivity resistance sheet 60 when the main body side vacuum adiabatic body is closed relative to the door side vacuum adiabatic body. To reduce heat loss even when the main body and door are open, the screen 62 may be provided as a porous material or a separate adiabatic structure.

[101] The thermal conductivity resistance sheet proposed in Fig. 4b can be applied to the door side vacuum adiabatic casing. FIG. 4b shows in detail parts different from those of FIG. 4a, and the same description applies to parts identical to those of FIG. 4a. The side frame 70 is further provided on the outside of the thermal conductivity resistance sheet 60. A component for sealing between the door and the main body, a vacuum port required for the vacuum process, an absorber port for maintaining vacuum, etc. can be placed on the side frame 70. This is because the installation of the components is convenient in the vacuum adiabatic body side of the main body, and the installation positions of components in the vacuum adiabatic body of the door side are limited.

[102] In the door side vacuum adiabatic casing, it is difficult to place the thermal conductivity resistance sheet 60 at the front end of the vacuum region, i.e. on the edge side surface of the vacuum region. This is due to the fact that, unlike the main body, the corner edge of the door is exposed outward. More specifically, if the thermal conductivity resistance sheet 60 is placed at the front end of the vacuum region, the corner edge of the door will be exposed, and therefore the disadvantage arises that a separate adiabatic portion must be configured to thermally insulate the thermal conductivity resistance sheet 60.

[103] The thermal conductivity resistance sheet proposed in FIG. 4c can be installed in a pipeline passing through a vacuum region. In FIG. 4c, parts other than those of FIGS. 4a and 4b are described in detail, and the same description applies to parts identical to parts of FIGS. 4a and 4b. A thermal conductivity resistance sheet having the same shape as the thermal conductivity resistance sheet of Fig. 4a, preferably a folded thermal conductivity resistance sheet 63, can be provided in the peripheral portion of the conduit 64. Accordingly, the heat transfer path can be lengthened and deformation can be prevented. caused by pressure difference. Additionally, a separate shield may be provided to improve the adiabatic thermal conductivity resistance performance of the sheet.

[104] The heat transfer path between the first and second plates 10 and 20 will be described with reference again to FIG. 4a. The heat passing through a vacuum adiabatic casing can be divided into heat surface thermal conductivity conducted along the surface of the vacuum adiabatic body, more specifically, thermal conductivity resistance sheet 60, heat thermal conductivity of the support, conducted along the support 30 provided inside the vacuum adiabatic housing, heat thermal conductivity of the gas conducted through the internal gas in the vacuum region, and heat radiative transmission, transmitted through the vacuum region.

[105] Heat transfer may vary depending on different design dimensions. For example, the support can be changed so that the first and second plates 10 and 20 can withstand vacuum pressure without deformation, the vacuum pressure can be changed, the distance between the plates can be changed, and the length of the thermal conductivity resistance sheet can be changed. The heat transfer may vary depending on the temperature difference between the regions (first and second regions) respectively provided by the plates. In this embodiment, the preferred configuration of the vacuum adiabatic body was found in recognition that its overall heat transfer value is less than the overall heat transfer value of a typical polyurethane foamed adiabatic structure. It can be assumed that in a typical refrigerator incorporating an adiabatic structure formed by polyurethane foam, the effective heat transfer coefficient is 19.6 mW/(m*K).

[106] When performing a comparative analysis of the heat transfer amounts of the vacuum adiabatic body of this embodiment, the heat transfer amount by heat The thermal conductivity of the gas may become minimal. For example, the amount of heat transfer through heat The thermal conductivity of the gas can be controlled so that it is less than or equal to 4% of the total heat transfer value. The amount of heat transferred by conduction heat of a solid, defined as the sum of the heat surface thermal conductivity and heat thermal conductivity of the support is the greatest. For example, the amount of heat transfer through solid conduction heat can reach 75% of the total heat transfer amount. Amount of heat transfer through heat radiative transfer is less than the amount of heat transfer through thermal conductivity of a solid, but greater than the amount of heat transfer through thermal conductivity of a gas. For example, the amount of heat transfer through heat Radiative transfer can account for about 20% of the total heat transfer.

[107] According to the heat transfer distribution, the effective heat transfer coefficients (eK: effective K) (W/(m*K)) of heat surface thermal conductivity, heat thermal conductivity of support, heat thermal conductivity of gas, and heat radiative transfer can be of the order given in the mathematical Inequality 1 for comparing the heat transferred , , , .

[108] [Inequality 1]

[109] eK _{heat of thermal conduction of a solid} >eK _{heat of radiation transfer} >eK _{heat of thermal conduction of a gas}

[110] Here, the effective heat transfer coefficient (eK) is a value that can be measured using differences in the shape and temperature of the target article. The effective heat transfer coefficient (eK) is a value that can be obtained by measuring the total heat transfer amount and the temperature of at least one part through which heat is transferred. For example, the caloric value (W) is measured using a heating source that can be quantitatively measured in the refrigerator, the temperature distribution (K) of the door is measured using the heat respectively transferred through the main body and edge of the refrigerator door, and the path along which the heat is transferred , is calculated as a conversion value (m), resulting in an effective heat transfer coefficient.

[111] The effective heat transfer coefficient (eK) of the entire vacuum adiabatic body is a value given by k=QL/AΔT. Here, Q denotes the caloric value (W) and can be obtained using the caloric value of the heater. A denotes the cross-sectional area (m ² ) of the vacuum adiabatic body, L denotes the thickness (m) of the vacuum adiabatic body, and ΔT denotes the temperature difference.

[112] For surface thermal conductivity heat, the caloric thermal conductivity value can be obtained by the temperature difference (ΔT) between the inlet and outlet of the thermal conductivity resistance sheet 60 or 63, the cross-sectional area (A) of the thermal conductivity resistance sheet, the length (L) of the thermal conductivity resistance sheet, and thermal conductivity (k) of thermal conductivity resistance sheet (thermal conductivity of thermal conductivity resistance sheet is a property of the material and can be obtained in advance). For the thermal conductivity heat of the support, the caloric thermal conductivity value can be obtained by the temperature difference (ΔT) between the inlet and outlet of the support 30, the cross-sectional area (A) of the support, the length (L) of the support, and the thermal conductivity (k) of the support. Here, the thermal conductivity of the support is a property of the material and can be obtained in advance. Amount of heat thermal conductivity of gas and heat The radiative transfer can be obtained by subtracting the surface conduction heat and the support conduction heat from the heat transfer value of the entire vacuum adiabatic body. Heat ratio thermal conductivity of gas and heat The radiative transfer heat can be obtained by calculating the radiative transfer heat when no gas conduction heat exists by greatly reducing the vacuum degree of the vacuum region 50.

[113] When the porous material is provided inside the vacuum region 50, heat The thermal conductivity of a porous material can be the sum of the heat thermal conductivity of support and heat radiative transmission. The thermal conductivity of the porous material may vary depending on various variables including type, quantity, and the like. porous material.

[114] According to one embodiment, the temperature difference, ΔT ₁ , between the geometric center formed by adjacent rods 31 and the point at which each of the rods 31 is located can be ensured to be less than 0.5°C. Also, the temperature difference, ΔT ₂ , between the geometric center formed by adjacent rods 31 and the edge of the vacuum adiabatic body can be ensured to be less than 0.5°C. In the second plate 20, the temperature difference between the average temperature of the second plate and the temperature at the point at which the heat transfer path passing through the thermal conductivity resistance sheet 60 or 63 intersects with the second plate may be greatest. For example, when the second region is a region hotter than the first region, the temperature at the point at which the heat transfer path passing through the thermal conductivity resistance sheet intersects with the second plate becomes the smallest. Likewise, when the second region is a region colder than the first region, the temperature at the point at which the heat transfer path passing through the thermal conductivity resistance sheet intersects with the second plate becomes greatest.

[115] This means that the amount of heat transferred through points other than the surface conduction heat passing through the thermal conductivity resistance sheet must be controlled, and the full amount of heat transfer acceptable for a vacuum adiabatic enclosure can only be achieved when the surface conduction heat occupies the greatest value in heat transfer. For this purpose, the temperature change of the thermal conductivity resistance sheet can be controlled so that it is greater than the temperature change of the plate.

[116] The physical characteristics of the components forming the vacuum adiabatic body will now be described. In a vacuum adiabatic enclosure, the force due to vacuum pressure is applied to all components. Thus, a material having a strength (N/m ² ) of a certain level can be used.

[117] Under such circumstances, the plates 10 and 20 and the side frame 70 can be made of a material having sufficient strength that the plates 10 and 20 will not be damaged even by vacuum pressure. For example, when the number of rods 31 is reduced to limit the conduction heat of the support, deformation of each of the plates occurs due to vacuum pressure, which may adversely affect the appearance of the refrigerator. The radiation resistance sheet 32 can be made of a material that has a low emissivity and can be easily subjected to thin film processing. Also, the radiation resistance sheet 32 must provide strength sufficient to prevent it from being deformed by external impact. The support 30 provides strength sufficient to withstand the force due to vacuum pressure and withstand external impact, and should also provide workability. The thermal conductivity resistance sheet 60 may be made of a material that is shaped like a thin plate and can withstand vacuum pressure.

[118] In one embodiment, the plate, side frame, and thermal conductivity sheet may be made of stainless materials having the same strength. The radiation resistance sheet can be made of aluminum, which has less strength than the strength of each of the stainless materials. The support can be made of a polymer that has less strength than aluminum.

[119] In addition to strength in terms of materials, analysis in terms of stiffness is required. Stiffness (N/m) can be a property that does not allow easy deformation. Thus, although the same material may be used, its stiffness may vary depending on its shape. The thermal conductivity resistance sheet 60 or 63 may be made of a material having some strength, but the stiffness of the material may be low to increase thermal resistance and minimize radiated heat when the thermal conductivity resistance sheet is uniformly distributed without any unevenness when vacuum pressure is applied. The radiation resistance sheet 32 requires some level of rigidity so that it does not contact another component due to deformation. In particular, the edge of the radiation resistance sheet may generate conduction heat due to sagging caused by the self-weight of the radiation resistance sheet. Thus, some level of rigidity is required. The support 30 requires sufficient rigidity to withstand the compressive stress from the plate and the external impact.

[120] In one embodiment, the plate and side frame may be highly rigid to prevent deformation caused by vacuum pressure. The support, in particular the rod, may have the second highest stiffness. The radiation resistance sheet may have a stiffness that is less than the rigidity of the support, but greater than the stiffness of the thermal conductivity resistance sheet. Finally, the thermal conductivity resistance sheet can be made of a material that is easily deformed by vacuum pressure and has the least rigidity.

[121] Even when the porous material 33 fills the vacuum region 50, the thermal conductivity resistance sheet may preferably have the least rigidity, and each of the plate and the side frame may have the greatest rigidity.

[122] Further, the vacuum pressure can be determined depending on the internal states of the vacuum adiabatic body. As already described above, vacuum pressure must be maintained inside the vacuum adiabatic housing to reduce heat transfer. It is easy to understand here that the vacuum pressure should be kept as low as possible to reduce heat transfer.

[123] The vacuum region can resist heat transfer by only the support 30. Here, the porous material 33 can fill the vacuum region 50 with the support inside to resist heat transfer. Heat transfer into the porous material can be resisted without the use of support.

[124] A case in which only a support is used will be described.

[125] FIG. 5 is a graph showing the change of the adiabatic characteristic and the change of the thermal conductivity of the gas according to the vacuum pressure when applying the simulation.

[126] With reference to FIG. 5, it can be seen that when the vacuum pressure decreases, i.e. the degree of vacuum increases, the thermal load in the case of only the main body (Graph 1) or in the case in which the main body and the door are connected together (Graph 2) is reduced compared to the thermal load in the case of a typical polyurethane foam product, resulting in adiabatic performance improves. However, it can be seen that the improvement degree of the adiabatic performance gradually decreases. You can also see that when the vacuum pressure decreases, the thermal conductivity of the gas (graph 3) decreases. However, it can be seen that although the vacuum pressure decreases, the rate at which the adiabatic performance and thermal conductivity of the gas are improved gradually decreases. Thus, it is preferable to reduce the vacuum pressure as much as possible. However, obtaining excess vacuum pressure is time-consuming and expensive due to the excessive use of getter. In this embodiment, the optimal vacuum pressure is proposed based on the above-described point of view.

[127] FIG. 6 is a graph showing results obtained by observing the time and pressure during the vacuum process of the interior of the vacuum adiabatic body when using a support.

[128] Referring to FIG. 6, to create the vacuum region 50 so that it is in a vacuum state, the gas in the vacuum region 50 is rarefied by a vacuum pump while evaporating the latent gas remaining in the components of the vacuum region 50 through heat treatment. However, when the vacuum pressure reaches a certain level or greater, there is a point at which the vacuum pressure level no longer increases (Δt ₁ ). The getter is then activated by disconnecting the vacuum region 50 from the vacuum pump and applying heat to the vacuum region 50 (Δt ₂ ). When the getter is activated, the pressure in the vacuum region 50 decreases for a period of time, but then normalizes and a certain level of vacuum pressure is maintained. The vacuum pressure, which remains at a certain level after activation of the getter, is approximately 1.8 * 10 ^-6 torr.

[129] In this embodiment, the point at which the vacuum pressure is no longer substantially reduced even when the gas is rarefied by operation of the vacuum pump is set equal to the lowest vacuum pressure limit used in the vacuum adiabatic body, resulting in the minimum internal pressure of the vacuum region 50 is set equal to 1.8*10 ^-6 torr.

[130] FIG. 7 is a graph showing results obtained by comparing vacuum pressure with thermal conductivity of gas.

[131] Referring to FIG. 7, the thermal conductivity of the gas relative to the vacuum pressure as a function of the gap dimensions in the vacuum region 50 is plotted as the effective heat transfer coefficient (eK). The effective heat transfer coefficient (eK) was measured when the gap in the vacuum region 50 had three sizes of 2.76 mm, 6.5 mm, and 12.5 mm. The gap in the vacuum region 50 is determined as follows. When the radiation resistance sheet 32 is present inside the vacuum region 50, this gap is the distance between the radiation resistance sheet 32 and the plate adjacent thereto. When the radiation resistance sheet 32 is missing inside the vacuum region 50, this gap is the distance between the first and second plates.

[132] It was found that since the gap size is small at the point corresponding to the typical effective heat transfer coefficient of 0.0196 W/(m*K) provided for an adiabatic polyurethane foam material, the vacuum pressure is 2.65*10 ^-1 Torr even when the gap size is 2.76 mm. Meanwhile, it has been found that the point at which the reduction of the adiabatic effect caused by the thermal conduction heat of the gas is saturated even when the vacuum pressure is reduced is the point at which the vacuum pressure is approximately 4.5*10 ^-3 torr. The vacuum pressure of 4.5*10 ^-3 torr can be defined as the point at which the reduction in adiabatic effect caused by the conduction heat of the gas is saturated. Also, when the effective heat transfer coefficient is 0.1 W/(m*K), the vacuum pressure is 1.2*10 ^-2 torr.

[133] When the vacuum region 50 is not supported but provided with porous material, the gap size varies from a few microns to several hundred microns. In this case, the amount of radiative heat transfer is small due to the porous material even when the vacuum pressure is relatively high, that is, when the vacuum degree is low. Therefore, a suitable vacuum pump is used to adjust the vacuum pressure. The vacuum pressure suitable for a suitable vacuum pump is approximately 2.0*10 ^-4 Torr. Also, the vacuum pressure at the point at which the reduction in the adiabatic effect caused by the heat of thermal conduction of the gas is saturated is approximately 4.7 * 10 ^-2 torr. Also, the pressure at which the reduction in adiabatic effect caused by gas conduction heat reaches the typical effective heat transfer coefficient of 0.0196 W/(m*K) is 730 torr.

[134] When the support and porous material are provided together in a vacuum region, a vacuum pressure that is an average between the vacuum pressure when only the support is used and the vacuum pressure when only the porous material is used can be generated and used. When only porous material is used, the lowest vacuum pressure can be used.

[135] The vacuum adiabatic body includes a first plate defining at least a portion of a wall for a first region and a second plate defining at least a portion of a wall for a second region and having a temperature different from the temperature of the first region. The first plate may include multiple layers. The second plate may include multiple layers.

[136] The vacuum adiabatic body may further include a seal configured to seal the first plate and the second plate to provide a third region that is in a vacuum state and has a temperature between the temperature of the first region and the temperature of the second region.

[137] When one of the first plate and the second plate is located in the interior space of the third region, the plate may be represented as an inner plate. When the other of the first plate and the second plate is located in the outer space of the third region, this plate can be represented as an outer plate. For example, the interior of the third area may be a refrigerator storage compartment. The outer space of the third region may be an outer space of the refrigerator.

[138] The vacuum adiabatic body may further include a support that supports the third region.

[139] The vacuum adiabatic body may further include a thermal conductivity resistance sheet connecting the first plate to the second plate to reduce the amount of heat transferred between the first plate and the second plate.

[140] At least a portion of the thermal conductivity resistance sheet may be positioned to face the third region. The thermal conductivity resistance sheet may be positioned between an edge of the first plate and an edge of the second plate. The thermal conductivity resistance sheet may be positioned between a surface with which the first plate faces the first region and a surface with which the second plate faces the second region. The thermal conductivity resistance sheet may be positioned between a side surface of the first plate and a side surface of the second plate.

[141] At least a portion of the thermal conductivity resistance sheet may extend in a direction that is substantially the same as the direction in which the first plate extends.

[142] The thickness of the thermal conductivity resistance sheet may be less than the thickness of at least one of the first plate or the second plate. The more the thermal conductivity resistance sheet is reduced in thickness, the more the heat transfer between the first plate and the second plate can be reduced.

[143] The more the thermal conductivity resistance sheet decreases in thickness, the more difficult it may be to attach the thermal conductivity resistance sheet between the first plate and the second plate.

[144] One end of the thermal conductivity resistance sheet may be configured to overlap at least a portion of the first plate. This aims to provide space for connecting one end of the thermal conductivity resistance sheet to the first plate. Here, the joining method may include welding.

[145] The other end of the thermal conductivity resistance sheet may be configured to overlap at least a portion of the second plate. This is intended to provide space for connecting the other end of the thermal conductivity resistance sheet to the second plate. Here, the joining method may include welding.

[146] As another embodiment of replacing the thermal conductivity resistance sheet, the thermal conductivity resistance sheet may be omitted, and one of the first plate and the second plate may be thinner than the other. In this case, any thickness can be greater than the thickness of the thermal conductivity resistance sheet. In this case, any length can be greater than the length of the thermal conductivity resistance sheet. In the case of this configuration, it is possible to reduce the increase in heat transfer due to the elimination of the thermal conductivity resistance sheet. Also, this configuration can facilitate connection of the first plate to the second plate.

[147] At least a portion of the first plate and at least a portion of the second plate may be configured to overlap each other. This aims to provide space for connecting the first plate to the second plate. The additional casing may be located on any of the first plate and the second plate that is thin in thickness. This aims to protect the thin plate.

[148] The vacuum adiabatic body may further include a vacuum port for rarefying gas in a vacuum region.

[149] Next, as one embodiment, a detailed configuration of a refrigerator in which a vacuum adiabatic body is applied to at least the main body will be described. This embodiment illustrates a case in which the ice maker is installed in the door of the cooling compartment.

[150] The ice maker may include a narrow-size ice maker that receives cold air having a temperature below freezing and water to make ice, and a full-size ice maker including a distribution structure for distributing ice, a crusher that crushes the ice, an ice hopper, containing ice, and a tray releasing ice.

[151] This embodiment shows that the ice maker is installed in the door of the cooling compartment of a refrigerator, in which the cooling compartment is located on the upper side and the freezing compartment is located on the lower side. An ice maker may be provided at the top of the cooling compartment door to operate such that ice falls down through a distributor located below the ice maker.

[152] This embodiment is not limited to the above system and can have various deformable applications.

[153] FIG. 8 is a schematic perspective view of a cold air duct for making ice in a refrigerator according to one embodiment.

[154] Referring to FIG. 8, a main body 2 and a door 3 are provided, and the main body 2 and door 3 may be provided as vacuum adiabatic bodies. The main body 2 may be vertically divided by a partition 300. The lower housing space may be provided as a freezing compartment F, and the upper housing space may be provided as a cooling compartment R. The evaporator 7 may be placed along one side, preferably the rear surface, inside the freezing compartment F.

[155] An ice maker 81 and a dispenser 82 supplying ice from the ice maker 81 to the user are provided in the door.

[156] To connect the evaporator 7 to the ice maker 81 so that the cold air of the evaporator is supplied to the ice maker 81, a first cold air passage 100 for making ice and a second cold air passage 200 for making ice are provided. The first cold air passage 100 for making ice may flow cold air flowing from the evaporator to the ice maker. Cold air discharged from the ice maker to return to the evaporator may flow in the second cold air passage 200 for making ice.

[157] A door side cold air passage (see reference numerals 105 and 205 in FIG. 15) to which the ice maker is connected may be provided in the door 3 and may function together with the first and second cold air passages 100 and 200 for making ice. to ensure the inflow and outflow of cold air.

[158] The first cold air passage 100 for making ice and the second cold air passage 200 for making ice pass through the partition. In other words, the cold air passages 100 and 200 for making ice may not be inserted into the interior of the vacuum adiabatic body, namely, into the interior of the vacuum region serving as the adiabatic space. Accordingly, it is possible to prevent the occurrence of adiabatic losses of the vacuum adiabatic body itself.

[159] The ice-making cold air passage passing through the partition may extend through the interior of the side panel 800. The side panel 800 may function as a shelf guide in the refrigerator or a component fixing, and may be provided on a side surface of the refrigerator. The side panel 800 may be provided as a plate casing, or the interior of the casing may be provided as an adiabatic space. Also, the interior of the adiabatic space can be thermally insulated with foam material. A side panel may refer to any one of the casing, casing and adiabatic space as a whole, and the casing, adiabatic space as a whole and the foam portion as a whole. The side panel 800 may be referred to as a casing.

[160] The interior space of the side panel is closed from the space in the refrigerator so that the temperature atmospheres in the refrigerator and in the first and second ice-making cold air passages 100 and 200 do not influence each other.

[161] This will be described in detail.

[162] It is possible to prevent heat exchange between the cold air of the first cold air passage 100 for making ice and the inside of the cooling compartment so as not to lose the cold air and impair the ability of the ice maker to make ice. The cold air of the ice making cold air channel 100 can be continuously supplied to the cooling compartment to prevent the items stored in the cooling compartment from becoming overcooled. Of course, irreversible losses due to unnecessary heat exchange can be reduced.

[163] Subcooling of items stored in the cooling compartment by the cold air of the second ice-making cold air passage 200 can be prevented to reduce irreversible losses due to unnecessary heat exchange.

[164] The first cold air passage 100 for making ice and the second cold air passage 200 for making ice may be positioned at a predetermined distance from each other to prevent heat exchange between the cold air passages 100 and 200 for making ice.

[165] The first and second ice making cold air passages 100 and 200 may be provided as passages connecting the evaporator to the ice maker over the shortest distance, whereby adiabatic losses are reduced. For this purpose, the first and second cold air passages 100 and 200 for making ice have an inclined section having an angle that is different from the vertical and horizontal states.

[166] FIG. 9 is a schematic cross-section of a cold air duct for making ice of a freezing compartment side of a refrigerator according to one embodiment, and FIG. 10 is a schematic cross-section of a cold air duct for making ice of a cooling compartment side of a refrigerator according to one embodiment.

[167] Referring to FIG. 9, an evaporator 7, a blower fan 150, and a first cold air passage 100 for making ice are shown. An evaporator 7 is located along the rear side inside the freezing compartment to generate cold air. A blower fan 150 is placed on one side adjacent to the evaporator 7 for blowing cold air generated in the evaporator into the inlet side of the first cold air passage 100 for making ice.

[168] The second cold air passage 200 for making ice may be located in front of the first cold air passage 100 for making ice. In other words, with respect to the evaporator 7, the outlet end of the second ice-making cold air passage 200 may be located further than the input end of the first ice-making cold air passage 100. As a result, backflow of blown cold air or loss of blast pressure can be prevented.

[169] The first and second cold air passages 100 and 200 for making ice may not be located in or pass through the vacuum region of the vacuum adiabatic body, which is the adiabatic space on the freezing compartment side. The first and second cold air passages 100 and 200 for making ice may be located in the interior space of the freezing compartment F in which a freezing atmosphere is formed.

[170] The first and second ice-making cold air passages 100 and 200 may have a narrow and a wide passage cross-section, and the wide surface of the passage may face a side surface of the freezing compartment of the refrigerator. Accordingly, more space inside the freezing compartment can be obtained.

[171] The blower fan 150 may directly draw in cool air from the evaporator 7, and for this purpose, the blower fan 150 may be positioned adjacent to the evaporator 7. The blower fan 150 may be controlled in consideration of other blowing purposes in the refrigerator, such as circulation air inside the refrigerator. However, in view of the narrow ice-making cold air passage, the blower fan 150 can be provided separately only for the purpose of blowing air into the inlet side of the first ice-making cold air passage 100. The outlet end of the blower fan 150 may be sealed with the inlet end of the first cold air passage 100 for making ice to inject high pressure air in consideration of pipeline losses.

[172] The first and second cold air passages 100 and 200 for making ice may not be thermally insulated by a separate adiabatic structure in the freezing section. Of course, if the difference in temperature atmosphere between the cold air inside the ice making cold air passages 100 and 200 and the freezing compartment is large according to the design of the cold air passage, then a separate adiabatic design for the ice making cold air passage cannot be ruled out.

[173] Referring to FIG. 10, the first and second ice-making cold air passages 100 and 200 may extend along a side surface of the cooling compartment R, and a wide surface of the passage may be located on the side surface of the cooling compartment. Thus, the description of the freezing department F can also be applied. Differences from the description of the freezing department will be described.

[174] The first and second cold air passages 100 and 200 for making ice may be located in the interior of the side panel 800. The side panel is a part for selecting a fixed position of a shelf, etc., located in the refrigerator, and allowing the operation of the shelf, etc. .P. The rail 810 can be installed on the side panel to provide a sliding function for a shelf or the like.

[175] It can be seen that the first cold air channel 100 for making ice extends some distance towards the door. The first cold air duct 100 for making ice may be provided with an inclination such that it faces toward the door, and the second cold air duct 200 for making ice may be provided with a relatively slight inclination compared to the first cold air duct 100 for making ice. .

[176] The first and second cold air passages 100 and 200 for making ice may contact the inner surface of the vacuum adiabatic housing. Accordingly, an adiabatic effect can be obtained by using a vacuum adiabatic body having a strong adiabatic effect, and a wider space inside the refrigerator can be obtained by ensuring that the side panel has as little thickness as possible.

[177] The first and second cold air passages 100 and 200 for making ice may not be located in or pass through the vacuum region of the vacuum adiabatic body, which is the adiabatic space on the cooling compartment side. The first and second cold air passages 100 and 200 for making ice may be located in the inner space of the cooling compartment R in which a cooling atmosphere is formed.

[178] Next, the part in which the first and second ice making cold air passages 100 and 200 are connected to the door side cold air passages 105 and 205 will be described.

[179] The connecting ends of the first and second cold air channels 100 and 200 for making ice and the connecting ends of the first and second cold air channels 105 and 205 of the door side can contact each other to introduce and discharge cold air for making ice when the door is closed, and can be spaced apart and not blow cold air to make ice when the door is open.

[180] FIG. 11 is a front perspective view showing the connecting end between the first and second cold air passages for making ice in the refrigerator, and FIG. 12 is a rear perspective view showing the connecting end between the first and second cold air passages for making ice. ice on the side of the door in the refrigerator.

[181] Referring to FIG. 11, the first docking portion 104 and the second docking portion 204 may be disposed vertically on the inner side surface of the front portion of the side panel 800.

[182] The first docking portion 104 may be an output end of the first ice-making cold air passage 100, and the second docking portion 204 may be an input end of the second ice-making cold air passage 200. The first docking portion 104 may be positioned at a distance from the second docking portion 204 above the second docking portion 204.

[183] A narrow channel and a wide channel of each of the first and second ice-making cold air passages 100 and 200 may be arranged vertically, and two passages of the first and second ice-making cold air passages 100 and 200 may be positioned adjacent to each other.

[184] The vertical positional relationship of the connecting parts 104 and 204 has a structure in which the inlet end of the first ice-making cold air passage 100 is located behind the inlet end of the second ice-making cold air passage 200, and the ice-making cold air passage is gradually inclined forward.

[185] To reverse the vertical relationship between the docking portions 104 and 204, the channel must be twisted or bent along the two cold air channels for making ice, which may result in wasted space in the refrigerator. The connecting portions 104 and 204 may be configured as shown to allow natural circulation of cold air released after heavy cold air is supplied to the top of the ice maker and then discharged to the bottom of the ice maker.

[186] The first and second joining portions 104 and 204 may be located on the inner surface of the front end of the side panel 800. The inner surface of the front end may be provided with an inclination so that it is wider towards the outside of the main body. Thus, during the operation of opening and closing the door, the connecting ends of the first and second cold air passages 100 and 200 for making ice and the connecting ends of the first and second cold air passages 105 and 205 of the door side can not interfere with each other and thus can smoothly open and seal.

[187] Referring to FIG. 12, holes 811 and 812 may be defined in the side surface of the door 3 corresponding to the docking portions 104 and 204. Like the docking portions 104 and 204, the positional relationship of these holes may be provided with an angle, and they may be placed side by side vertically.

[188] The joint portion and the hole may be in contact with each other to provide a passage for cold air, and a soft sealing material may be placed on both contact surfaces to prevent leakage of cold air.

[189] FIG. 13 is a view for explaining the relationship between the ice-making cold air passage and the baffle.

[190] Referring to FIG. 13, the partition 300 may be provided as a combined part in which the foam part is foamed in the body to divide the space inside the refrigerator. The first and second ice making cold air passages 100 and 200 may pass through the baffle 300 and be supported by the baffle 300.

[191] In the first cold air passage 100 for making ice, a portion 101 is located inside the first freezing compartment, with an inlet end located in the space of the freezing compartment, a first baffle portion 102 extends through the baffle and at least a portion thereof is located in the baffle, and a portion 103 is located inside the first side panel, which is located on the side panel 800. The outlet end of the first cold air channel 100 for making ice may be located on the inner side and surface of the side panel, or may extend to the outside of the side panel.

[192] Similarly, in the second cold air passage 200 for making ice, a portion 201 is located inside the second freezing compartment in which the outlet end is located, a second baffle portion 202 extends through the baffle and at least a portion thereof is located in the baffle, and a portion 203 is located inside the second side panel, which is located on the side panel 800. The inlet end of the second cold air channel 200 for making ice may be located on the inner side and surface of the side panel, or may extend outside the side panel.

[193] When the first cold air channel 100 for making ice is installed in the refrigerator, a narrow and a wide channel are installed near the inner surface of the vacuum adiabatic body. The same is the case in the case of the second cold air channel 200 for making ice. Thus, to ensure smooth flow in the channel, the first and second cold air channels 100 and 200 for making ice are curved towards the door at the connecting part with the door. An end of the ice-making cold air duct curved toward the door may provide docking portions 104 and 204. The first and second ice-making cold air ducts 100 and 200 may be curved not only in the back-and-forth and up-and-down directions, but also may be bent in the transverse direction of the connecting portions 104 and 204 relative to the front of the refrigerator to direct an even flow of air.

[194] FIG. 14 is a view for explaining the structure on which the partition is located.

[195] Referring to FIG. 14, the baffle 300 may be attached to the interior of the vacuum adiabatic housing. As an example of attaching the baffle 300 to the interior of the vacuum adiabatic body, a baffle mounting frame 130 may be provided. The partition 300 can be configured such that the adiabatic partition material 320 is provided inside the partition panel 321, and generally, through the partition 300, a smooth adiabatic effect of the cooling and freezing spaces can be ensured.

[196] The baffle mounting frame 130 may have a vacuum adiabatic body extension extending along an inner surface of the vacuum adiabatic body and a baffle extension extending toward the baffle 300. The vacuum adiabatic body extension may be a portion extending vertically in the drawing, and the baffle extension may be the part that runs horizontally in the drawing.

[197] As a preferred example, a frame having a cross-sectional structure that is curved once may be at least partially connected to the baffle mounting frame 130 along both sides and a rear surface of the inner surface of the vacuum adiabatic housing.

[198] The baffle 300 may be located on the baffle mounting frame 130, and the first and second cold air passages 100 and 200 for ice making, which pass through the partition of the baffle, may be located inside the side panel 800. The adiabatic material is located inside the side panel 800, which allows the first and second ice-making cold air passages 100 and 200 to be thermally isolated from the relatively high temperature atmosphere in the cooling compartment.

[199] The structure and connection method by which the ice making cold air passages 100 and 200 are connected to the baffle 300 and the side panel 800 will be described. As described above, the adiabatic side panel material 820 may be provided within the side panel 800, allowing thermally insulate the inside of the side panel from the inside of the refrigerator. The partition 300 may be provided with an adiabatic partition material 320 within the partition panel 321 for thermal insulation and space separation. An example of the adiabatic baffle material 320 and the adiabatic side panel material 820 may preferably be an adiabatic foam material.

[200] A method for connecting the ice-making cold air passages 100 and 200, the baffle 300, the side panel 800, the adiabatic baffle material 320, and the adiabatic side panel material 820 will be described in detail. These parts can help increase adiabatic efficiency by allowing the distance between these parts to be reduced as much as possible.

[201] First, the ice making cold air passages 100 and 200 may be arranged in the refrigerator in a state of connection with the side panel adiabatic material 820 and then connected to the inner surface of the vacuum adiabatic body. Here, location in the refrigerator may mean that they are arranged in a fixed position in the refrigerator according to the design to prepare for or await the next joining process.

[202] As a more specific example, the cold air passages 100 and 200 for making ice may be connected to the baffle panel 321 and the side panel 800. Thereafter, the adiabatic side panel material 820 may be foamed within the side panel 800 such that all the parts are connected to each other using foam material. After this, they can be attached to the inner surface of the vacuum adiabatic housing.

[203] As another example, after installing the cold air passages 100 and 200 for making ice on the inner surface of the vacuum adiabatic body, the baffle panel 321 and the side panel 800 can be connected to each other. Thereafter, the adiabatic side panel material 820 may be foamed such that the baffle panel 321 and the side panel 800 are bonded to each other to form a single body.

[204] As another example, the adiabatic side panel material 820 may be foamed and integrated using a separate mold on the outside of the cold air channels 100 and 200 for making ice. Thereafter, the assembly of the cold air channels 100 and 200 for making ice and the side panel adiabatic material 820 can be connected to the baffle panel 321 and the side panel 800. Thereafter, it can be attached to the inner surface of the vacuum adiabatic body.

[205] In all of the above examples, the foaming process of the adiabatic baffle material 320 can be carried out together with the foaming process of the adiabatic side panel material 820, and the joining operation through the foam portion can also be carried out.

[206] On the other hand, as another method, the cold air passages 100 and 200 for making ice may be positioned while the adiabatic baffle material 320 is foamed, and an assembly may be formed of the side panel 800 and the baffle panel 321 connected together. Thereafter, the adiabatic side panel material 820 may be foamed to bond both portions to each other. Once all connections are completed, they can be connected to the inner surface of the vacuum adiabatic housing.

[207] When the ice-making cold air passages 100 and 200 are attached to the baffle panel 321 and the side panel 800, the ice-making cold air passages 100 and 200 may be positioned to extend through the bulkhead panel 321 and the side panel 800. In this case, each panel may become a foam casing as the foam portion fills the foam casing in a foaming operation. All parts can be connected by a foam part. In the connected state, they can be located on the inner surface of the vacuum adiabatic housing.

[208] The portions for fixing the ice making cold air passages 100 and 200 may correspond to all of the portions of the baffle panel 321, the side panel 800, the adiabatic baffle material 320, and the adiabatic side panel material 820. In some cases, they may be one or two or more parts selected from these four parts.

[209] The partition panel 321 and the side panel 800 can be provided as a single body, and thus, a single structure that is provided as a single body can be provided as foam casings that are convenient to use in the foaming process.

[210] To prevent the ice-making cold air passages 100 and 200 from being obstructed by the partition mounting frame 130, a portion of the ice-making cold air passages 100 and 200 may be bent at an angle α. The purpose of the angle α is to allow the cold air channel for making ice to pass along the baffle extension of the baffle mounting frame. Alternatively, a cut-out portion may be provided in the baffle mounting frame 130 to cut out a portion through which each of the ice-making cold air passages 100 and 200 passes.

[211] Next, a cold air passage for making ice according to another embodiment will be described.

[212] This embodiment differs from the cold air duct for making ice according to the above embodiment in that many parts of the cold air duct for making ice are housed in the partition.

[213] In other words, in the above embodiment, although the cold air path for making ice passes through the partition, many parts are located inside the side panel. On the other hand, in this embodiment, the cold air channel for making ice is characterized in that it is directed towards the door, namely towards the front side, through the partition.

[214] Accordingly, the cold air duct for making ice according to the above embodiment may be called the cold air duct for making ice of the side panel side, and the cold air duct for making ice according to this embodiment may be called the cold air duct for making ice of the partition side. However, to avoid complexity due to redundant terms, the parts that can be understood in each part of the text will be called cold air channel for making ice and then explained. However, in the part where special classification is required, other names will be given and explained.

[215] In the description of the following embodiment, the parts to which the contents of the above embodiment can be applied as is will be applied as in the description of the above embodiment. If the same operation is performed, the same reference position will be given.

[216] FIG. 16 is a schematic perspective view of a cold air passage for making ice in a refrigerator according to another embodiment. FIG. 17 is a view showing the relationship between the partition and the door according to another embodiment.

[217] Referring to FIGS. 16 and 17, the blower fan 150 moves the cold air generated in the evaporator to the inlet side of the first cold air passage 100 for making ice. The first ice making cold air channel 100 extends along the baffle within the baffle. In this embodiment, the second cold air passage 200 for making ice may not extend along the partition, but may be directed directly into the freezing compartment from the lower end of the door. In this way, unnecessary losses of the internal adiabatic space of the partition can be prevented.

[218] The second cold air passage 200 for making ice may be located on one side of the first cold air passage 100 for making ice. Specifically, the outlet end of the second ice-making cold air passage 200 and the input end of the first ice-making cold air passage 100 may be located on the left and right sides of the front end of the partition.

[219] The first and second cold air passages 100 and 200 for making ice may not be located in or pass through the vacuum region of the vacuum adiabatic body, which is the adiabatic space on the freezing compartment side. The first and second cold air passages 100 and 200 for making ice may be located in the interior space of the freezing compartment F in which a freezing atmosphere is formed.

[220] The first cold air channel 100 for making ice may have a narrow and wide flat channel cross-section, and the wide surface of the channel may be located along a plane of the freezing compartment partition. Accordingly, the thickness of the partition may be less or greater than the thickness of this space in the refrigerator.

[221] The first cold air passage 100 for making ice extends forward from inside the partition. The first cold air passage 100 for making ice may have an extension 133 located within the baffle 300 and extending back and forth from the baffle in a flat state, a downward inclined portion 132 that is inclined downward toward the evaporator 7 from the rear of the extension 133 portion 131 inside the freezing compartment which extends inside the freezing compartment, and an upwardly inclined portion which is inclined upwardly towards the door from the front portion of the extension 133.

[222] The inclined portions 132 and 134 are configured to reduce flow losses due to the narrow internal space of the channel by providing a shallow channel support. The drawing indicates that each of the inclined parts is inclined at an angle α.

[223] A portion 131 inside the freezing compartment may be provided to improve the ice making performance of the ice maker by drawing in the low temperature evaporator exhaust air as much as possible.

[224] The outlet of the upwardly inclined portion 134 may be provided at a portion that is aligned with the bottom surface of the door at the top surface of the front end of the partition. The cold air duct coming from the ice maker can be connected to the bottom surface of the door.

[225] The second ice-making cold air passage 200 may be positioned in a state in which it is aligned in the left and right directions with the outlet of the first ice-making cold air passage 100 . All of the cold air passages 100 and 200 for making ice may be provided with narrow passages that are elongated in the left and right directions. This is done to allow the ice making cold air passages 100 and 200 to be as isolated as possible given the narrow front and rear door width. The second cold air passage 200 for making ice may be provided in a structure that is similar to the upwardly inclined portion 134.

[226] The door side cold air passages 105 and 205 are the same as in the above embodiment, except that the end of the passage connected to the ice maker is brought out from the lower end surface of the door, and this end is aligned in the left and right directions, and not in the vertical direction.

[227] Within the partition 300, the ice making cold air passages 100 and 200 may be placed as close as possible to the freezing compartment F to prevent cold air loss from occurring.

[228] The inlet and outlet ends of the cold air duct for making ice can be exposed to the outside when the door is open. Also, since an open structure connected to the freezing compartment is provided, a switching structure can be provided.

[229] Fig. 18 and 19 are views for explaining the switching structure of the cold air passage for making ice, wherein Fig. 18 is a view showing the partition side and Fig. 19 is a view showing the door side.

[230] Referring to FIG. 18, a switching door structure may be provided at the end of the cold air passage for making ice. In the switching door structure, there is a channel door 135 configured to open and close the opening of the upwardly inclined portion 134, a spring 136 that directs the rotation operation of the channel door, and a stopper 137 that stops the rotation of the door, which is rotated by the force of the spring 136.

[231] Since the end of the upwardly inclined portion 134 is provided with an inclination, a portion of the upwardly inclined portion 134 contacts the door when the door is closed to automatically open the channel door 135. The portion that is held on the door when the door is opened can be released to allow the channel door doors 135 will automatically close. When the channel door 135 is closed, a limit to which the door is held on the stopper 137 can be set.

[232] Referring to FIG. 19, a pusher 1351 may be provided at a portion that is adjacent to the outlet ends of the openings of the door side cold air passages 105 and 205 on the lower surface of the door. The pusher may push the channel door 135 to open the channel door.

[233] The positional relationship between the pusher 1351 and the channel door 135 can be provided so that when the door 3 is closed relative to the main body 2, the pusher 1351 and the channel door 135 are located in positions in which the pusher 1351 and the channel door 135 are aligned with each other with a friend. In addition to the non-sharp shape, each of the pusher 1351 and the channel door 135 can be varied in shape.

[234] According to the switching door structure, the opening/closing of the door 3 relative to the main body 2 and the opening/closing of the cold air passage for making ice can be reversed. Namely, when the door is closed, the cold air passage for making ice is opened, and when the door is opened, the cold air passage for making ice can be closed. Accordingly, it is possible to improve the heating performance by blocking the strong flow of cold air used for making ice. This can block the introduction of foreign substances in advance.

[235] The switching door structure may be further provided with structures that are opposed to each other. In other words, a channel door, a stopper, and a spring may be provided at the cold air channel end of the door side, and a pusher may be provided at the ice making cold air channel end. Accordingly, the loss of cold air in the door side cold air duct can be reduced.

[236] In the switching door structure, a pair of switching structures may be provided at both the ice making cold air passage end and the door side cold air passage end, respectively. Accordingly, a door may be provided at both the end of the cold air duct for making ice and the end of the cold air duct of the door side to prevent leakage of cold air and to prevent the introduction of foreign substances.

[237] Next, a structure of a cold air passage for making ice in the case of a refrigerator according to an embodiment in which the vacuum adiabatic bodies are separated from each other will be described. For parts without specific description, it is assumed that the contents of the above embodiment apply as is. On the other hand, in the following content, the door is not shown for convenience, but it will naturally be understood that the door is provided.

[238] FIG. 20 is a perspective view of a refrigerator in which each vacuum adiabatic body provides each storage space. FIG. 21 is a perspective view of a refrigerator in a state in which a gap maintaining portion is provided in a connecting portion between the vacuum adiabatic bodies.

[239] In the refrigerator according to this embodiment, for example, the bottom side may provide a cooling compartment as a storage space above the freezing compartment.

[240] Referring to FIG. 20, the first housing 2a and the second housing 2b may be provided with independent vacuum adiabatic housings. The housings 2a and 2b may be spaced apart from each other. Components that are necessary for the operation of the refrigerator can be placed in the gap between the housings 2a and 2b, which are spaced apart from each other.

[241] The gap maintaining portion 590 is provided in the gap between the vacuum adiabatic bodies such that the upper and lower vacuum adiabatic bodies are firmly connected to each other to form one body, which increases impact resistance. Components required for the operation of the refrigerator may be placed between two vacuum adiabatic bodies provided by the gap maintaining portion 590.

[242] In the evaporator provided in the second body 2b, contents required for making ice can be supplied to the first body 2a. For this purpose, the first body 2a may be provided with a first ice making connection channel 511 and a second ice making connection channel 512. Although not shown, an ice making connecting channel having the same structure may extend from the second body 2b. The cold air channel for making ice can be inserted into the connecting channel for making ice.

[243] To supply cold air from the evaporator to the ice maker using the cold air passage for making ice, the cold air passages 100 and 200 for making ice must pass through the gap formed by the gap retaining portion 590 and the wall of the vacuum adiabatic housing.

[244] As described above, heat loss occurs along the cold air supply path and, in particular, the outer side of the vacuum adiabatic body, for example, the gap between two vacuum adiabatic bodies provided by the gap retaining portion 590 can act as an outer space having a room temperature . The room temperature space may act as a major loss path for the cold air required to make ice, and the thermal insulation of this path may create a limitation in the supply of cold air to the ice maker. Therefore, this limitation should be removed.

[245] FIG. 22 is an enlarged view of the ice making connecting channel, and FIG. 23 is a cross section of the ice making connecting channel taken along line AA'.

[246] With reference to FIGS. 22 and 23, it can be seen that this embodiment corresponds to the case in which cold air for making ice is directed along the side surface of the refrigerator (see FIG. 8).

[247] The ice making connecting channels 511 and 512, which connect the interior spaces of the housings 2a and 2b, are spaced apart from each other. The thermal conductivity resistance sheet 60 may be provided on the wall surface of each vacuum adiabatic body through which the ice making connecting channel passes to reduce thermal conductivity.

[248] An adiabatic ice making channel material 513 may be provided on the outer surface of each of the connecting ice making channels 511 and 512. The porous material may be provided as the adiabatic ice-making channel material 513 for thermal insulation. The adiabatic ice making channel material 513 may also play a role in supporting the shock absorption function of the vacuum adiabatic body, play a role in supporting the load of the first body 2a, and play a role in preventing damage to the gap maintaining portion 590.

[249] FIGS. 24 to 27 are views of a refrigerator in which a cooling compartment and a freezing compartment are respectively provided with two vacuum adiabatic bodies, and a cold air passage for making ice is provided in the bottom surface of the door, according to one embodiment. The description relating to FIGS. 20-23 can be applied as is without any specific explanation.

[250] Referring to FIGS. 24 and 25, two main bodies 2a and 2b are connected to each other by a gap holding portion 590, and paired left and right ice making connecting channels 521 and 522 are provided on the front portions of the main bodies 2a and 2b.

[251] Referring to FIGS. 26 and 27, the ice making connection channels 521 and 522 may be passed through the ice making cold air passages 100 and 200, and a thermal conductivity resistance sheet may be provided on the exposed wall surface of each vacuum adiabatic body provided with connecting channel for making ice, to reduce losses due to thermal conductivity. The adiabatic ice making channel material 513 can perform the function of absorbing shock of the vacuum adiabatic body, bearing the load of the first body, and preventing damage to the body.

[252] In the refrigerator according to this embodiment, the part corresponding to the partition in which the cold air channel for making ice is housed is not provided. In other words, the interior of the portion in which the gap maintaining portion 590 is located may be at room temperature and may not be suitable for passing very cold air of the ice maker. For this reason, it is more preferable not to provide the cold air passage for making ice in the gap between the gap maintaining portions 590.

[253] However, the aspect of law of the present patent does not preclude the location of the cold air channel for making ice at the position in which the gap maintaining portion 590 is located. It is also possible for the cold air channel for making ice to be located in the gap holding portion when sufficient adiabatic effect is ensured. However, deterioration in energy efficiency may occur due to adiabatic losses. On the other hand, in this case, in each of the main bodies 2a and 2b, the portions cut to allow passage of the cold air passage for making ice may be different from each other.

[254] Next, the effect of the cold air duct for making ice according to one embodiment will be described by considering a structure of a door that carries out ice making using cold air supplied using the cold air duct for making ice having various structures.

[255] The channel in which the ice-making cold air channel is built into the foam part, which is the adiabatic space, is called the foam-built ice-making cold air channel, the channel built into the side panel, which is the interior space in the refrigerator that is shown in FIG. 8 is called the panel side ice making cold air duct, and the duct built into the partition which is the interior space in the refrigerator which is shown in FIG. 8 is called the partition side ice making cold air duct.

[256] First, the case of a cold air channel embedded in foam for making ice will be described.

[257] FIG. 28 is an exploded perspective view of the door, and FIG. 29 is a horizontal cross-section of the space in which the ice maker is installed. With reference to FIGS. 28 and 29, it can be seen that a foam-embedded cold air passage for making ice is provided, an ice maker is provided in a cooling compartment door, and a rectangular adiabatic panel is installed outside the ice maker.

[258] In the adiabatic door structure, the adiabatic foam material 606 is disposed in the gap between the outer casing 603 and the inner casing 602 as a unit to improve the adiabatic performance of the door. The ice maker 81 and basket 604 may be provided in the inner casing 602.

[259] The cold air duct for making ice may be introduced and discharged along the side surface of the door to extend vertically from the side surface of the door.

[260] An adiabatic panel 601 may be inserted into the gap between the adiabatic foam 606 and the outer casing 603 to help improve the adiabatic performance of the door.

[261] The outer casing 603 may be shaped with both ends curved inward, and an opening for the distributor 82 may be provided at the bottom of the outer casing 603.

[262] Secondly, the case of a cold air channel for making side panel ice will be described.

[263] FIG. 30 is an exploded perspective view of the door, FIG. 31 is a horizontal cross-section of the space in which the ice maker is installed, and FIG. 32 is a perspective view of the first vacuum adiabatic module.

[264] With reference to FIGS. 30 and 32, it can be seen that a side panel ice making cold air passage is provided, an ice maker is provided in the cooling compartment door, and the first vacuum adiabatic module is installed as a three-dimensional vacuum adiabatic module outside the ice maker. Partial technology of the various vacuum adiabatic housings shown in FIGS. 1-4 can be applied to the first vacuum adiabatic module. However, the first vacuum adiabatic module may be provided in a three-dimensional curved form.

[265] The three-dimensional vacuum adiabatic module can not only prevent heat transfer in one direction, but also prevent heat transfer in multiple directions. The first vacuum adiabatic module 610 can prevent heat transfer in the left and right directions, as well as in the forward direction relative to the refrigerator door.

[266] The first vacuum adiabatic module 610 may be provided with a top opening 616 at its top. The top hole can be opened to allow water to flow to the door and for wiring to pass through it. A lower opening 615 may be provided at the bottom of the first vacuum adiabatic module 610. The lower opening 615 may be open to provide a water or ice distribution function and a door wiring input/output function.

[267] In an adiabatic door structure, the first vacuum adiabatic module 610 may be thermally insulated by covering it using a front surface of the door and a side surface of the door, and a foamed adiabatic material 606 may be provided on the outside of the side surface of the first vacuum adiabatic module. The inner casing 602, ice maker 81, basket 604, and door side cold air passage 105, 205 may be located within the first vacuum adiabatic module 610. This is to make this embodiment different from the first case in which lateral thermal conduction is not blocked. .

[268] The door side cold air passages 105 and 205 are shielded once again from the outside by the first vacuum adiabatic module 610. In other words, the door side cold air passages 105 and 205 are located substantially within the space that is defined by the first vacuum adiabatic module 610 and the space inside the refrigerator as walls, and the door side cold air passages 105 and 205 can be substantially free of cold air loss.

[269] The cold air duct for making ice may be introduced and output along the side surface of the door to extend vertically from the side surface of the door. The outer housing 603 may be shaped with both ends curved inward, and an opening for the distributor 82 may be provided at the bottom of the outer housing 603.

[270] Thirdly, the case of a cold air channel for making ice on the partition side will be described.

[271] FIG. 33 is an exploded perspective view of the door, and FIG. 34 is a perspective view of the first vacuum adiabatic module. The cross section of the door is the same as the cross section in FIG. 31.

[272] In the case of the baffle side cold air duct for making ice shown in FIG. 16, the cold air duct for making ice is provided inside the baffle. Also, compared with the second case, the characteristic difference in the door is that the three-dimensional vacuum adiabatic module is replaced by a second vacuum adiabatic module 620.

[273] Specifically, in the outer case 603, the part in which the dispenser 82 is located is called the lower part L, and its upper part is called the upper part U. Here, in the case of the cold air channel for making ice of the side panel side, only the upper part can be is thermally insulated, and the cold air channel for making ice on the side of the baffle can thermally insulate both the upper part and the lower part.

[274] The second vacuum adiabatic module 620 further includes a window distributor 621, the front surface of which is open in the form of a window in addition to the upper and lower openings 615 and 616. The window distributor may allow a user to approach the ice distributor structure. The thermal conductivity resistance sheet may be further provided on the edge of the window spreader 621 so that little thermal conductivity occurs between the inner and outer plates.

[275] In the case of the second vacuum adiabatic module 620, the door side cold air passages 105 and 205 may also be thermally insulated by the vacuum adiabatic module.

[276] The results of the experiment will be described for the three cases described above.

[277] FIGS. 35 to 37 are views showing the thermal efficiency of the cold air passage for making ice in the above three cases. 35 to 37 are views showing a case in which a foam-integrated ice-making cold air duct and an adiabatic panel are installed, FIG. 36 is a view showing a case in which a side panel ice-making cold air duct and a first vacuum are installed adiabatic module, and FIG. 37 is a view showing a case in which a cold air duct for making ice of a baffle and a second vacuum adiabatic module are installed.

[278] Each experiment was performed with the inlet air having a temperature of about 20 degrees Celsius below zero, a flow rate of about 0.2 SMM, with the outside air having a temperature of about 20 degrees Celsius, with a cooling compartment temperature of about 3.6 degrees Celsius, and freezing compartment temperature is about 18 degrees Celsius.

[279] With reference to FIGS. 35-37, it can be seen that the increase in cold air temperature at each point appears as a numerical value. Since the temperature increase in the third case is the smallest, it can be considered that it has the best adiabatic effect.

[280] Table 1 is a table of experimental results regarding cold air loss. Here, the amount of heat gain is expressed in Watts (W), and the pressure loss is expressed in MPa units.

[281] [Table 1]

Amount (1) of heat gain Pressure loss (1) Amount (2) of heat gain Pressure loss (2) Amount (3) of heat gain Pressure loss (3) Ice making channel inlet 4.55 21.9 3.42 18.6 1.46 14.5 Door inlet pipe 1.74 17.9 1.75 21.3 2.42 27.9 Ice making chamber 5.78 4.0 5.33 5.7 5.05 3.3 Door exhaust pipe 0.61 14.3 0.94 14.2 0.92 11.7 Ice making channel outlet 2.12 14.5 1.86 15.0 0.14 3.7 Total 14.81 72.6 13.30 74.8 9.99 61.2

[282] Referring to Table 1, compared with the first case, in the second case, the ice production amount increases by approximately 10%, and in the third case, the ice production amount increases by approximately 20%.

[283] Next, an example of a three-dimensional vacuum adiabatic module, and a door in which the three-dimensional vacuum adiabatic module is applied, will be described in more detail.

[284] The door described in the following description can be defined as another vacuum adiabatic body in which a three-dimensional vacuum adiabatic module is applied. The vacuum adiabatic housing described in the following description can be applied to a door that opens or closes a refrigerator opening to form a refrigerator part.

[285] FIG. 38 is a cross-section of a door in which the ice maker and door side basket are installed, and FIG. 39 is an enlarged view of a corner of FIG. 38. FIG. 38 is a particularly significant view and may be changed in a particular configuration.

[286] Referring to FIGS. 38 and 39, the three-dimensional vacuum adiabatic module 610 thermally insulates the front surface and both side surfaces of the door. The door side cold air passages 105 and 205 and the ice maker are located in the inner region, which is thermally isolated by the three-dimensional vacuum adiabatic module 610. According to such a configuration, the adiabatic efficiency can be high, and the strength of the door can also be increased.

[287] The door configuration will be described in more detail.

[288] The door includes an outer casing 603, which is made of a metallic material and defines the appearance of the product, and an inner casing 602, on which a gasket 690 is located and which is made of a non-metallic material to reduce heat transfer from the outer casing 603. The outer casing 603 and the inner the body 602 may be provided as a single body to define the appearance of the door. A three-dimensional vacuum adiabatic module is provided to provide an adiabatic structure along the exterior of the door. According to the three-dimensional vacuum adiabatic module 610, the front and side surfaces of the door can be thermally insulated. The ends of the outer casing 603 and the inner casing 602 may be connected to each other.

[289] An ice maker connected to the inner casing 602 and a basket connected to the inner casing may be other optional products of the door, and the practicality of the door can be further improved. The inner casing may extend into the refrigerator to provide an interior space within the refrigerator.

[290] The inner casing 602 may use an ABS resin having high strength to protect the thermal conductivity resistance thin sheet together with the inner foam portion.

[291] At least a portion of the space between the inner casing 602 and the outer casing 603 may be filled with adiabatic foam material made from polyurethane. Adiabatic foam material may be provided on the edge of the door to increase the door's resistance to deformation when an external force is applied.

[292] The first plate 10 and the second plate 20 may be provided to define a vacuum region of the three-dimensional vacuum adiabatic module 610. The second plate 20 may be in contact with the outer casing 603, and the outer surface of the second plate 20 may be filled with a foam portion.

[293] At least one of the first and second plates 10 and 20 may be configured to have a thickness less than the thickness of the outer housing 603.

[294] For example, one of the first and second plates, including regions D, E, and F of the first and second plates, may have a thickness less than the thickness of the outer housing. The first and second plates 10 and 20 may be in contact with each other to provide a seal 61.

[295] The reason why at least one of the first and second plates is provided thinner than the outer casing will be described.

[296] If the thermal conductivity resistance sheet is used as a separate part in the connecting portion between the first and second plates, dew may be generated heavily on the thermal conductivity resistance sheet. To cope with the formation of dew, the thickness of the door may be increased due to the increase in the thickness of the adiabatic material in the peripheral part.

[297] When the length of the thermal conduction path provided by the thermal conductivity resistance sheet increases, the thickness of the thermal conductivity resistance sheet can increase. The shorter the thermal conduction path length provided by the thermal conductivity resistance sheet, the greater the thickness of the thermal conductivity resistance sheet. On the other hand, the thinner the thickness of the thermal conductivity resistance sheet, the more difficult it is to weld the thermal conductivity resistance sheet to the first and second plates.

[298] In one embodiment, to overcome this limitation, at least a portion of the first and second plates 10 and 20 may be provided to be thinner than the outer casing to function as a thermal conductivity resistance sheet. As a result, a thermal conductivity resistance sheet having a long thermal conduction path can be provided to minimize the occurrence of dew by minimizing the amount of heat transfer in the vicinity of the thermal conductivity resistance sheet.

[299] In this case, the thickness of the adiabatic material near the door can be reduced in the Y-axis direction (in the forward and backward directions of the door), and the thickness of the door in the Y-axis direction can be reduced.

[300] In the three-dimensional vacuum adiabatic module 610, the first extension module 6101 extending in the X-axis direction and the second extension module 6102 extending along the door transverse direction in the Y-axis direction may be provided as one body. Extension modules 6101 and 6102 may share a vacuum region and may be bent to extend at a substantially 90 degree angle. The three-dimensional vacuum adiabatic module 610 may have a single vacuum region in which different pass-through modules 6101 and 6102 communicate with each other. The various passing modules 6101 and 6102 may have a support 30 and a radiation resistance means 32 provided therein. A separate part of the support and radiation resistance means can be used for each extension module.

[301] Accordingly, heat loss in the transverse direction (X-axis direction) of the door can be reduced by ensuring that the vacuum region, which is defined only in the X-axis direction, extends in another axial direction (eg, the Y-axis direction). Thus, compared with the case of using a foamed adiabatic material, the thickness of the adiabatic material of the door peripheral portion can be reduced in the X-axis direction, and the thickness of the door in the X-axis direction can be reduced.

[302] As a result, according to the three-dimensional vacuum adiabatic module, since the thickness of the door is reduced, a smaller size of the refrigerator door can be provided, and a larger interior space of the door can be provided.

[303] The characteristics of a three-dimensional vacuum adiabatic module can be understood by comparison with a vacuum adiabatic panel (vacuum insulating panel) having a low degree of vacuum, an adiabatic material made of a porous material, and having a metallic or non-metallic outer shell.

[304] First of all, in the case of a vacuum insulation panel having a metal outer shell, it is difficult to manufacture the panel in a curved shape while maintaining a porous material therein, and the inner part and the outer part of the curved outer shell may communicate with each other, causing cold air to leak and form dew.

[305] In the case of a vacuum adiabatic panel in which the outer shell is made of a non-metal, outgassing is too large, and thus it is difficult to maintain a vacuum. Thus, there is a limitation in that a separate coating is required to prevent outgassing.

[306] The three-dimensional vacuum adiabatic module has the advantage of eliminating these limitations. In particular, when applied to a refrigerator door, the wall thickness of the refrigerator door can be reduced, and the size of the refrigerator door can be increased.

[307] A sheet thinner than the outer casing 603 may be used in region E. In some cases, a thermal conductivity resistance sheet thinner than each of the first and second plates 10 and 20 may be used. This is because the region E covers the area occupied by the gasket 690, and each of the outer part and the inner part of the door has a high temperature relative to the gasket. To reduce the heat transfer of the interior space as much as possible, as can be seen, an energy projection 608 is provided within the spacer 690.

[308] Region E is the region to which the plate is connected, and can be defined as the region in which the amount of thermal conductivity increases in the longitudinal direction of the plate.

[309] Foamed adiabatic material 606 is provided on the outside of region D, as described above, to increase the strength of the door.

[310] To provide each of the extension modules 6101 and 6102 of the vacuum adiabatic module 610, the second plate 20 may have a surface defining all three-dimensional surfaces. For example, based on the drawings, a surface extending in a direction parallel to the outer surface of a door may be a vertical surface with respect to the Y-axis, and four surfaces that are curved inwardly relative to this surface may be vertical surfaces with respect to the X-axis and Z-axis. As a result, the second plate may have a first surface parallel to the outer surface of the door and a second surface perpendicular to the first surface.

[311] The disclosed contents of the second vacuum adiabatic module 620 having a window can be applied to a door according to this embodiment.

[312] A door in which a three-dimensional vacuum adiabatic module is applied according to another embodiment will be described. In the absence of specific mention and where applicable, the above description may also be applied to the following description.

[313] FIG. 40 is a cross-section of a door in which a three-dimensional multi-bend vacuum adiabatic module is applied according to another embodiment.

[314] Referring to FIG. 40, in this embodiment, the three-dimensional multi-bend vacuum adiabatic module includes a plurality of extension modules having different extension directions. Thus, the three-dimensional multi-bend vacuum adiabatic module according to this embodiment may be referred to as the first multi-bend vacuum adiabatic module 630.

[315] The first multi-bend vacuum adiabatic module 630 includes a first extension module 6301 extending along the extension direction of the front surface of the door, a second extension module 6302 extending along the side surface of the door from the outer end of the first extension module 6301 into the interior of the refrigerator, and a third extension module 6303 extending from the second extension module 6302 into the door.

[316] The first extension module 6301 may extend all the way to at least one end of the front door. The adiabatic effect can be continuously realized from the front surface of the door to the entrance end of the side surface.

[317] First and second extension modules 6301 and 6302 may cover and thermally insulate the front portion of the door. In this way, the front of the door can have higher strength. Also, the adiabatic efficiency of the door can be increased.

[318] The third extension module 6303 is curved inward (in the X-axis direction) of the door for passage. Specifically, the second extension module 6302 located at the right end of the first multi-bend vacuum adiabatic module 630 is bent to the left side to extend into the door. Likewise, the second extension module 6302, located at the left end of the first multi-bend vacuum adiabatic module 630, is bent to the right side to extend into the door.

[319] The third extension module 6303 can increase the adiabatic effect in the X-axis direction to reduce the door wall thickness, which increases the interior space of the door.

[320] The first multi-bend vacuum adiabatic module 630 may be provided in a structure that is bent in three places to provide its own structural strength. When the door is of the same standard, by using the first multi-bend vacuum adiabatic module 630, the door size can be further reduced.

[321] A thermal conductivity resistance sheet may be provided at the end of the third extension module 6303 and thermally insulated with adiabatic foam material 606 to reduce the adiabatic loss of the vacuum adiabatic module 630.

[322] FIG. 41 is a cross-section of a door in which a three-dimensional multi-bend vacuum adiabatic module is applied according to another embodiment. In this embodiment, the specific extension aspects of the second and third extension modules 6302 and 6303 are different from the extension aspects of the first multi-bend vacuum adiabatic module 630, and other parts are the same. Thus, the description of another embodiment, which is not specifically disclosed, can be applied as is.

[323] Referring to FIG. 41, in this embodiment, the three-dimensional multi-bend vacuum adiabatic module includes a plurality of extension modules having different extension directions. The three-dimensional multi-bend vacuum adiabatic module in this embodiment may be referred to as the second multi-bend vacuum adiabatic module 640, which is different from the first multi-bend vacuum adiabatic module 630.

[324] The second multi-bend vacuum adiabatic module 640 includes a first extension module 6401 extending along the extension direction of the front surface of the door, a second extension module 6402 extending from the first extension module 6401 into the refrigerator, i.e. in the Y-axis direction, and a third extension module 6403 extending from the second extension module 6402 into the door, i.e. in the X-axis direction.

[325] In this embodiment, the outer end of the first extension module 6401 may be aligned with the side surface of the door housing space. Accordingly, the second extension module 6402 may provide a boundary surface of the door housing space.

[326] The third extension module 6403 may extend outwardly by bending from the inner end of the second extension module 6402. The third extension module 6403 may have high strength due to the increased moment of inertia of the second multi-bend vacuum adiabatic module 640.

[327] Of course, various advantages described in other embodiments may also be included as is in this embodiment.

[328] FIG. 42 is a cross-section of a door using a three-dimensional vacuum adiabatic module, according to another embodiment. This embodiment is similar to the above-mentioned embodiment of the three-dimensional vacuum adiabatic module 610 shown in FIG. 38, but differs from the above-mentioned embodiment in how the second extension module 6102 is routed. Thus, the description regarding parts without specific description will apply as is. .

[329] Referring to FIG. 42, the three-dimensional vacuum adiabatic module 610 according to this embodiment includes a first extension module 6101 and a second extension module 6102. The second extension module 6102 may extend along the interior door housing space to provide a boundary wall of the housing space. similar to the second extension module 6402 of the second multi-bending vacuum adiabatic module 640.

[330] The second extension module 6402 may extend substantially to the inner end of the door. For example, the second extension module 6402 may extend to the inner end of the inner casing 603. Accordingly, the advantage of maximizing the adiabatic effect by using a vacuum adiabatic housing can be maximized.

[331] This embodiment will be described in more detail with reference to FIG. 42.

[332] Referring to FIG. 42, in more detail regarding this embodiment, the refrigerator may include a main body having a housing space and an opening that allows access to the housing space, and a door that opens and closes the housing space. The door may include an outer casing 603 corresponding to the outside of the door. The outer casing can be made of metal. The door may include an inner casing 602 corresponding to the inside of the door. A gasket may be located on the inner casing 602. The inner casing may be made of a non-metallic material to reduce heat transfer from the outer casing 603.

[333] The refrigerator may include a first adiabatic module 650 and a second adiabatic module 660 located in a gap between the outer casing and the inner casing. The first adiabatic module may be provided as a three-dimensional vacuum adiabatic module, for example, the first vacuum adiabatic module 610 may be used.

[334] The first vacuum adiabatic module includes a first plate 10 defining a wall portion for a first region and a second plate 20 defining at least a wall portion for a second region and having a temperature different from the temperature of the first region.

[335] The first plate 10 may include multiple layers. The second plate 20 may include multiple layers. For example, the inner casing 602 can be understood as a second first plate. The outer casing 603 can be understood as a second second plate.

[336] The refrigerator may further include a seal configured to seal the first plate and the second plate to provide a third space that is in a vacuum state and has a temperature between the temperature of the first region and the temperature of the second region.

[337] The refrigerator may further include a support that maintains a third space.

[338] The first vacuum adiabatic module 650 may further include a thermal conductivity resistance sheet connecting the first plate to the second plate to reduce the amount of heat transferred between the first plate and the second plate.

[339] At least a portion of the thermal conductivity resistance sheet may be positioned to face the third space. The thermal conductivity resistance sheet may be positioned between an edge of the first plate and an edge of the second plate. The thermal conductivity resistance sheet may be positioned between a surface with which the first plate faces the first space and a surface with which the second plate faces the second space. The thermal conductivity resistance sheet may be positioned between a side surface of the first plate and a side surface of the second plate. At least a portion of the thermal conductivity resistance sheet may extend in a direction that is substantially the same as the direction in which the first plate extends.

[340] The thickness of the thermal conductivity resistance sheet may be less than the thickness of at least one of the first plate or the second plate. The more the thermal conductivity resistance sheet decreases in thickness, the more the heat transfer between the first plate and the second plate can be reduced. One end of the thermal conductivity resistance sheet may be configured to overlap at least a portion of the first plate. This aims to provide space for connecting one end of the thermal conductivity resistance sheet to the first plate. The joining method may include welding. The other end of the thermal conductivity resistance sheet may be configured to overlap at least a portion of the second plate. This is intended to provide space for connecting the other end of the thermal conductivity resistance sheet to the second plate. The joining method may include welding.

[341] The more the thermal conductivity resistance sheet decreases in thickness, the more difficult it may be to attach the thermal conductivity resistance sheet between the first plate and the second plate. As another embodiment of replacing the thermal conductivity resistance sheet, the thermal conductivity resistance sheet may be omitted, and one of the first plate and the second plate may be thinner than the other. In this case, any thickness can be greater than the thickness of the thermal conductivity resistance sheet. In this case, any length can be greater than the length of the thermal conductivity resistance sheet. Thus, heat transfer can be reduced by eliminating the thermal conductivity resistance sheet. Also, the connection of the first plate to the second plate can be facilitated.

[342] At least a portion of the first plate and at least a portion of the second plate may be configured to overlap each other. This aims to provide space for connecting the first plate to the second plate. The additional casing may be located on any of the first plate and the second plate that is thin in thickness. This is intended to protect the thinned casing.

[343] In this embodiment, the second adiabatic module 660 may have an adiabatic coefficient that is less than the adiabatic coefficient of the first adiabatic module. The second adiabatic module 660 may be provided in the form of an adiabatic foam material 606.

[344] The second adiabatic module 660 may have a vacuum level that is less than the vacuum level of the first adiabatic module. The second adiabatic module 660 may be a non-vacuum adiabatic module or may be made of a non-metal. The second adiabatic module can be made of polymer or PU foam. The second adiabatic module 660 may be convenient for installing or connecting components compared to the first adiabatic module 610. Since the first adiabatic module has a vacuum region defined therein, it may be difficult to install or connect components.

[345] The second adiabatic module may be located between a plurality of first adiabatic modules or may be located on the first adiabatic module. A second adiabatic module 660 may be provided to define at least a portion of a wall connecting the plurality of first adiabatic modules to each other. The second adiabatic module may be configured to contact the side surfaces of a plurality of first adiabatic modules.

[346] To reduce the amount of heat transfer between the first plate and the second plate, the first plate may be configured to have a thickness less than that of the second plate. Such a configuration can reduce the thickness of the first adiabatic module 610 in the Y-axis direction described above.

[347] The second adiabatic module 660 may be configured to contact the inner casing 602 to define at least a portion of the wall on which the component is located.

[348] The first adiabatic module 650 may include a first extension module 6101, at least a portion of which extends in the X-axis direction, and a second extension module 6102, at least a portion of which extends in the Y-axis direction. Such a configuration may reduce the thickness of the first adiabatic module 610 in the X-axis direction described above.

[349] At least one of the first plate 10 or the second plate 20 may be configured to have a thickness less than the thickness of the outer housing 603.

[350] At least a portion of the first extension module 6101 may extend along the front surface of the door. At least a portion of the second extension module 6102 may extend along the side surface of the door. The first extension module and the second extension module may extend by bending the single body.

[351] The door side cold air passages 105 and 205 may be located in the interior space defined by the first and second extension modules.

[352] The ice maker 81 may be located in the interior space defined by the first and second extension modules.

INDUSTRIAL APPLICABILITY

[353] According to this embodiment, the vacuum adiabatic module used in a refrigerator door can be optimized for thermal insulation of the door using a thinner and smaller adiabatic space. As a result, the accommodation space provided in the door may increase in volume.

[354] According to this embodiment, the performance of the door-mounted ice maker can be improved. Also, the adiabatic space of the door can be more effectively provided by a three-dimensional vacuum adiabatic module.

[355] According to this embodiment, it is also possible to proceed to actual production of a refrigerator using high vacuum and obtain an advantage that can be used in industry.

Claims (21)

1. A vacuum adiabatic housing, comprising: a first plate configured to define at least a portion of a wall for a first region; a second plate configured to define at least a portion of a wall for a second region having a temperature different from the temperature of the first region; a seal configured to seal the first plate and the second plate to provide a vacuum region that has a temperature between the temperature of the first region and the temperature of the second region and is in a vacuum state; a support configured to maintain a vacuum region interval; an outer casing configured to contact the second plate and made of a metallic material, wherein the outer casing is thicker than at least a portion of at least one of the first plate or the second plate, wherein at least two extension modules are provided in the vacuum region extending into directions different from each other. 2. Vacuum adiabatic housing according to claim 1, in which said at least two extension modules share a vacuum region. 3. The vacuum adiabatic housing according to claim 1, in which the outer casing has a thickness greater than the thickness of each of the first plate and the second plate. 4. The vacuum adiabatic housing according to claim 1, further comprising an inner casing connected to the outer casing, the inner casing being made of a non-metallic material, which is provided on the side of the first plate. 5. The vacuum adiabatic housing according to claim 1, wherein the foamed adiabatic material fills the area between the inner casing and the outer casing. 6. Vacuum adiabatic housing according to claim 1, wherein said at least two extension modules are bent for passage. 7. Vacuum adiabatic housing according to claim 6, in which the support is provided separately for each of the extension modules. 8. A refrigerator, comprising: a main body having a housing space and an opening configured to provide access to the housing space; and a door configured to open and close the housing space, the door comprising: an outer casing made of a metal material, the outer casing corresponding to the outside of the door; an inner casing on which the gasket is located and which is made of a non-metallic material to reduce heat transfer from the outer casing, the inner casing corresponding to the inside of the door; and a three-dimensional vacuum adiabatic module located in a gap between the outer casing and the inner casing, the three-dimensional vacuum adiabatic module comprising a first plate and a second plate that are provided to define a vacuum region within it, and at least one of the first plate or the second plate has a thickness , less than the thickness of the outer casing, and the three-dimensional vacuum adiabatic module contains at least two extension modules extending in directions different from each other. 9. The refrigerator according to claim 8, further comprising a door-side cold air channel located in the internal space of a three-dimensional vacuum adiabatic module. 10. The refrigerator according to claim 8, wherein the three-dimensional vacuum adiabatic module comprises: a first extension module, at least a portion of which extends along the front surface of the door; and a second extension module, at least a portion of which extends along a side surface of the door. 11. The refrigerator according to claim 10, wherein the adiabatic foam material fills at least one side surface of the second extension module. 12. The refrigerator according to claim 10, wherein the first extension module and the second extension module are bent into a single body for passage. 13. The refrigerator according to claim 10, further comprising a third extension module bent from the end of the second extension module. 14. The refrigerator according to claim 8, wherein the second plate is in contact with the outer casing, and foamed adiabatic material is filled on the outside of the second plate. 15. The refrigerator according to claim 8, wherein the inner casing extends into the housing space to define a portion of the wall of the housing space. 16. A refrigerator, comprising: a main body having a housing space and an opening configured to provide access to the housing space; and a door configured to open and close the housing space, the door comprising: an outer casing made of a metal material, the outer casing corresponding to the outside of the door; an inner casing on which the gasket is located and which is made of a non-metallic material to reduce heat transfer from the outer casing, the inner casing corresponding to the inside of the door; and a first adiabatic module and a second adiabatic module, which are located in the gap between the outer casing and the inner casing, the first adiabatic module comprising: a first plate configured to define at least a portion of the wall of the first region; a second plate configured to detect at least a portion of the wall of the second region having a temperature different from the temperature of the first region; a seal configured to seal the first plate and the second plate to provide a vacuum region that has a temperature between the temperature of the first region and the temperature of the second region and is in a vacuum state; and a support configured to maintain a vacuum region interval, wherein the second adiabatic module is configured to have an adiabatic coefficient less than the adiabatic coefficient of the first adiabatic module, and contacts the inner casing to define at least a portion of the wall on which the component, the first plate, is located has a thickness less than that of the second plate to reduce the amount of heat transfer between the first plate and the second plate, and at least a portion of the first adiabatic module comprises a first extension module, at least a portion of which extends in the X-axis direction, and a second extension module, at least at least part of which extends in the direction of the Y axis. 17. The refrigerator according to claim 16, wherein at least one of the first plate or the second plate has a thickness less than the thickness of the outer casing. 18. The refrigerator of claim 16, wherein at least a portion of the first extension module extends along the front surface of the door, at least a portion of the second extension module extends along the side surface of the door, and the first extension module and the second extension module are curved as a single body to passing. 19. The refrigerator according to claim 16, wherein an ice maker is located in the internal space defined by the first extension module and the second extension module. 20. The refrigerator according to claim 16, wherein a door-side cold air duct is located in the interior space defined by the first extension module and the second extension module.

Images