초록 ▼

There is disclosed a refrigerator including an inner case that defines an exterior appearance of a storage space, an outer case spaced apart a predetermined distance from the inner case, a vacuum space provided between the inner case and the outer case, with being maintained vacuum, to insulate the

There is disclosed a refrigerator including an inner case that defines an exterior appearance of a storage space, an outer case spaced apart a predetermined distance from the inner case, a vacuum space provided between the inner case and the outer case, with being maintained vacuum, to insulate the inner case from the outer case, and a porous filter filled in the vacuum space to restrain conductivity generated by gas existent in the vacuum space.

대표청구항 ▼

1. A refrigerator comprising: an inner case that defines a storage space;an outer case facing the inner case and spaced apart a distance from the inner case, the outer case and the inner case defining, between the outer case and the inner case, a vacuum space that is maintained at a vacuum pressure

1. A refrigerator comprising: an inner case that defines a storage space;an outer case facing the inner case and spaced apart a distance from the inner case, the outer case and the inner case defining, between the outer case and the inner case, a vacuum space that is maintained at a vacuum pressure and that is configured to insulate the inner case from the outer case;a porous filter that is located in the vacuum space defined between the outer case and the inner case and that is configured to restrain conductivity generated by gas present in the vacuum space;a first support plate located at a surface of one of the inner case or the outer case;a plurality of spacers fixed to the first support plate and configured to maintain the vacuum space between the inner case and the outer case; anda second support plate located at a surface of the other one of the inner case or the outer case,wherein the second support plate comprises a plurality of grooves that are defined on a surface of the second support plate and that are configured to receive ends of the spacers therein. 2. The refrigerator according to claim 1, wherein the porous filter comprises glass wool. 3. The refrigerator according to claim 1, wherein the porous filter has a density of 65 kg/m3 or less. 4. The refrigerator according to claim 1, wherein an atmospheric pressure of the vacuum space is 10−3 torr or less. 5. The refrigerator according to claim 1, wherein the distance between the inner case and the outer case is approximately 10 mm. 6. The refrigerator according to claim 1, wherein the plurality of the grooves are concavely curved. 7. The refrigerator according to claim 1, wherein the plurality of the grooves are defined at positions corresponding to the spacers. 8. The refrigerator according to claim 1, wherein the plurality of the spacers are uniformly arranged and spaced apart a predetermined distance from each other. 9. The refrigerator according to claim 1, wherein the inner case defines at least one of a refrigerating compartment and a freezing compartment. 10. A refrigerator comprising: an inner case defining a storage space;an outer case facing the inner case and being spaced apart a distance from the inner case, the outer case and the inner case defining, between the outer case and the inner case, a vacuum space maintained at a vacuum pressure and being configured to insulate the inner case from the outer case;a first support plate disposed on a surface of one of the inner case and the outer case, and in the vacuum space between the inner case and the outer case;spacers disposed between the first support plate and the other one of the inner case and the outer case, each of the spacers having a cylindrical shape to maintain spacing between the inner case and the outer case, the spacers and the first support plate being integrated as a single part made from reinforced plastic; anda second support plate located at a surface of the other one of the inner case or the outer case,wherein the inner case and the outer case are made from metal and the second support plate comprises a plurality of grooves that are defined on a surface of the second support plate and that are configured to receive ends of the spacers therein. 11. The refrigerator of claim 10, wherein the spacers and the first support plate are integrated as a single part made from reinforced plastic. 12. The refrigerator of claim 10, wherein the spacers each have a cylindrical shape. 13. The refrigerator of claim 10, wherein an atmospheric pressure of the vacuum space is 10−3 torr or less. 14. The refrigerator of claim 10, wherein the spacers have concavely curved ends and the concavely curved ends of the spacers are configured to be received in the plurality of grooves. 15. The refrigerator of claim 10, wherein the first support plate is disposed directly on an outer surface of the inner case or an inner surface of the outer case. 16. The refrigerator of claim 15, wherein the second support plate is disposed directly on a surface of the other one of an outer surface of the inner case and an inner surface of the outer case. 17. The refrigerator of claim 10, wherein a size of the first support plate is smaller than a size of the inner case and smaller than a size of the outer case.