Vacuum adiabatic body and refrigerator

Patent metadata

Field	Value
Publication number	US-12372297-B2
Application number	US-202318222002-A
Country	US
Kind code	B2
Filing date	Jul 14, 2023
Priority date	Aug 1, 2017
Publication date	Jul 29, 2025
Grant date	Jul 29, 2025

Abstract

A vacuum adiabatic body and a refrigerator are provided. The vacuum adiabatic body may include a sheet base provided in a direction crossing a vacuum space between a first plate and a second plate, and at least one sheet protrusion that protrudes from the sheet base in at direction toward one of the first plate or the second plate to maintain an interval between the sheet base and the one of the first plate or the second plate.

First claim

The invention claimed is:

1. A vacuum adiabatic body, comprising:
a first plate;
a second plate;
a vacuum space provided between the first plate and the second plate;
a radiation resistance sheet to reduce heat radiation between the first plate and second plate, the radiation resistance sheet being disposed in the vacuum space, wherein the radiation resistance sheet comprises a sheet base including a first through hole and a second through hole, a first sheet protrusion that protrudes from the sheet base in a direction toward the first plate and a second sheet protrusion that protrudes from the sheet base in a direction toward the second plate;
a first bar that passes through the first through hole of the sheet base; and
a second bar that passes through the second through hole of the sheet base, wherein the first sheet protrusion is positioned between the first bar and the second bar.

2. The vacuum adiabatic body of claim 1 , wherein the sheet base is provided in a direction crossing the vacuum space.

3. The vacuum adiabatic body of claim 1 , wherein at least one of the first bar or the second bar extends in a first direction of the vacuum space, and wherein the sheet base extends in a second direction of the vacuum space to allow the sheet base to cross the at least one of the first bar or the second bar.

4. The vacuum adiabatic body of claim 3 , wherein the second direction is substantially perpendicular to the first direction.

5. The vacuum adiabatic body of claim 1 , wherein the sheet base comprises a third through hole provided adjacent to an edge of the sheet base and a fourth through hole provided adjacent to a center of the sheet base, and wherein a size of the fourth through hole is greater than a size of the third through hole.

6. The vacuum adiabatic body of claim 3 , wherein at least one of the first sheet protrusion or the second sheet protrusion protrudes from the sheet base in the first direction.

7. The vacuum adiabatic body of claim 1 , further comprising a support configured to maintain a distance between the first plate and second plate and comprising a support plate having a lower heat transfer coefficient than the first plate or the second plate, wherein at least one of the first sheet protrusion or the second sheet protrusion contacts the support plate and does not contact the first plate or the second plate.

8. The vacuum adiabatic body of claim 7 , wherein at least one of the first sheet protrusion or the second sheet protrusion comprises a distal end to contact the support plate, and wherein an area of a portion of the distal end which the support plate contacts is less than an area of a portion of the at least one of the first sheet protrusion or the second sheet protrusion to which the sheet base is connected.

9. The vacuum adiabatic body of claim 1 , wherein the first and second sheet protrusions are spaced apart from each other in a direction in which the first plate or the second plate extends.

10. The vacuum adiabatic body of claim 1 , wherein the first sheet protrusion is disposed to support the first plate, and the second sheet protrusion is disposed to support the second plate.

11. The vacuum adiabatic body of claim 1 , wherein at least one of the first bar or the second bar extends in a first direction of the vacuum space and is configured to maintain an interval between the first plate and the second plate in the vacuum space, and wherein the first direction is substantially perpendicular to a direction in which the first plate or the second plate extends.

12. The vacuum adiabatic body of claim 1 , wherein the second bar is positioned between the first sheet protrusion and the second sheet protrusion.

13. The vacuum adiabatic body of claim 1 , wherein the radiation resistance sheet comprises a third sheet protrusion that protrudes from the sheet base in the direction toward the second plate, and wherein the first bar is positioned between the first sheet protrusion and the third sheet protrusion.

14. A vacuum adiabatic body, comprising:
a first plate;
a second plate;
a vacuum space provided between the first plate and the second plate;
a radiation resistance sheet to reduce heat radiation between the first plate and second plate, the radiation resistance sheet being disposed in the vacuum space; and
a bar that extends in a first direction of the vacuum space and passes through a through hole of the radiation resistance sheet, the first direction being substantially perpendicular to a direction in which the first plate or the second plate extends, wherein the radiation resistance sheet comprises a sheet protrusion supported by the first and second plates, and wherein the through hole of the radiation sheet is formed at the sheet protrusion.

15. The vacuum adiabatic body of claim 14 , wherein the radiation resistance sheet further comprises a sheet base that extends in a direction in which the first or second plate extends, and wherein the sheet protrusion comprises:
a first sheet protrusion that protrudes from the sheet base to be supported by the first plate; and
a second sheet protrusion that protrudes from the sheet base to be supported by the second plate.

16. The vacuum adiabatic body of claim 15 , wherein the second sheet protrusion comprises a plurality of second sheet protrusions, and wherein a first point where the first sheet protrusion is supported by the first plate and a second point where the plurality of second sheet protrusions are supported by the second plate are arranged alternately in a direction in which the first or second plate extends.

17. A vacuum adiabatic body, comprising:
a first plate;
a second plate;
a vacuum space provided between the first plate and the second plate; and
a radiation resistance sheet to reduce heat radiation between the first plate and second plate, the radiation resistance sheet being disposed next to or adjacent to the first plate, wherein the radiation resistance sheet comprises a plurality of radiation resistance sheets that are stacked in a direction from the first plate towards the second plate, the plurality of radiation resistance sheets having different shapes, and wherein the plurality of radiation resistance sheets comprises:
a first radiation resistance sheet comprising a first sheet protrusion supported by the first plate and a second sheet protrusion that protrudes in a different direction from the first sheet protrusion; and
a second radiation resistance sheet comprising a sheet base to support the second sheet protrusion and a sheet protrusion that protrudes from the sheet base and is supported by the second plate.

Assignees

• Lg Electronics Inc

Inventors

• Han Sol
• Ryu Minsu
• Bae Jaehyun

Classifications

• F25D23/06 Primary

  Walls (F25D23/08 takes precedence; containers with thermal insulation B65D81/38) · CPC title

• F25D2201/14

  using subatmospheric pressure · CPC title

• F25D2317/043

  by creating a vacuum in a storage compartment · CPC title

• F16L59/065

  using vacuum (F16L59/075 takes precedence) · CPC title

• Y02B80/10

  Insulation, e.g. vacuum or aerogel insulation · CPC title