Vacuum adiabatic body, refrigerating or warming apparatus, and method for manufacturing vacuum adiabatic body

Patent metadata

Field	Value
Publication number	US-11725768-B2
Application number	US-201816635776-A
Country	US
Kind code	B2
Filing date	Jul 31, 2018
Priority date	Aug 1, 2017
Publication date	Aug 15, 2023
Grant date	Aug 15, 2023

Abstract

A vacuum adiabatic body, a refrigerating or warming apparatus, and a method for manufacturing a vacuum adiabatic body are provided. The vacuum adiabatic body includes a first plate defining at least a portion of a wall for a first space, a second plate defining at least a portion of a wall for a second space having a second temperature different from a first temperature of the first space, and at least one conductive resistance sheet connecting the first and second plates to each other. At least one of a flange of the first plate coupled to the at least one conductive resistance sheet or a flange of the second plate coupled to the at least one conductive resistance sheet is bent.

First claim

The invention claimed is:

1. A vacuum adiabatic body, comprising:
a first plate defining at least a portion of a wall for a first space;
a second plate defining at least a portion of a wall for a second space having a second temperature different from a first temperature of the first space;
first and second sealings that seal the first plate and the second plate to provide a third space having a third temperature between the first temperature and the second temperature, wherein the third space is a vacuum space; and
a heat resistance unit that reduces heat transfer between the first plate and the second plate and comprises at least one conductive resistance sheet made of the same material as the first and second plates, wherein the first sealing includes a first welding portion of a first flange of the first plate and the at least one conductive resistance sheet, and the second sealing includes a second welding portion of a second flange of the second plate and the at least one conductive resistance sheet, wherein the first plate comprises a first plate body, and the first flange including a first bent portion that is bent toward an outside of the vacuum adiabatic body from the first plate body and a second bent portion that is bent from the first bent portion, wherein the second plate comprises the second flange including a bent portion that is bent toward the outside of the vacuum adiabatic body, wherein at least one of the first welding portion or the second welding portion includes a rewelding portion formed by performing a rewelding of a welded portion to allow a vacuum state in the third space to be maintained.

2. The vacuum adiabatic body according to claim 1 , wherein the first bent portion of the first flange extends in a direction substantially perpendicular to the second bent portion of the first flange.

3. The vacuum adiabatic body according to claim 2 , wherein a coupling surface, on which the first welding portion is provided, of the first flange of the first plate and a coupling surface, on which the second welding portion is provided, of the second flange of the second plate extend in directions substantially perpendicular to each other.

4. The vacuum adiabatic body according to claim 1 , wherein at least one of the first flange of the first plate or the second flange of the second plate is pressurized by a roller electrode and welded outside of the third space.

5. The vacuum adiabatic body according to claim 1 , further comprising a cover disposed at an outside of the at least one conductive resistance sheet, wherein the cover is configured to shield the second bent portion of the first flange and to be coplanar with respect to the first plate body.

6. The vacuum adiabatic body according to claim 5 , wherein the first and second bent portions of the first flange form a wall in an inner space of a refrigerator.

7. The vacuum adiabatic body according to claim 5 , wherein a shield is provided between the cover and the at least one conductive resistance sheet.

8. The vacuum adiabatic body according to claim 1 , wherein the at least one conductive resistance sheet includes a first surface coupled to the first plate by the first welding portion and a second surface coupled to the second plate by the second welding portion, wherein the first and second surfaces of the at least one conductive resistance sheet are exposed to the third space, and wherein the first and second surfaces extend in directions substantially perpendicular to each other.

9. The vacuum adiabatic body according to claim 2 , wherein the first bent portion extends in a direction substantially perpendicular to the first plate body.

10. The vacuum adiabatic body according to claim 1 , wherein the second bent portion of the first flange of the first plate and the bent portion of the second flange of the second plate extend in a same direction.

11. The vacuum adiabatic body according to claim 1 , wherein the first welding portion is provided on the second bent portion of the first flange and the second welding portion is provided on the bent portion of the second flange.

12. The vacuum adiabatic body according to claim 11 , wherein the first surface includes a first portion coupled to the second bent portion of the first flange by the first welding portion and a second portion, and wherein the third space is formed between the first plate body and the second portion of the first surface.

13. The vacuum adiabatic body according to claim 1 , wherein the first and second bent portions are continuously provided on the first flange of the first plate.

14. The vacuum adiabatic body according to claim 1 , wherein the first flange of the first plate further extends along an extension direction of the first and second plates when compared with the second flange of the second plate, and wherein coupling surfaces of the first and second flanges, to which the at least one conductive resistance sheet is coupled to be sealed, extend in directions substantially perpendicular to each other.

15. A method for manufacturing a vacuum adiabatic body, the method comprising:
welding at least one of a first plate or a second plate to at least one conductive resistance sheet to provide the vacuum adiabatic body;
exhausting air to vacuumize an inner space of the vacuum adiabatic body; and
determining whether the inner space of the adiabatic body is vacuumized to perform a re-welding of a welded portion when a vacuum state is not maintained, wherein the welded portion is provided at a flange of at least one of the first plate or the second plate, and the flange is bent.

16. The method according to claim 15 , wherein the welding is performed using a seam welding machine provided with a roller electrode.

Assignees

• Lg Electronics Inc

Inventors

• Nam Hyeunsik
• Kang Myoungju
• Kim Bongjin

Classifications

• F25D2201/14

  using subatmospheric pressure · CPC title

• F25D23/066

  Liners · CPC title

• F16L59/02

  Shape or form of insulating materials, with or without coverings integral with the insulating materials · CPC title

• B60N3/104

  with refrigerating or warming systems · CPC title

• F16L59/065 Primary

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