Vacuum adiabatic body and refrigerator

Patent metadata

Field	Value
Publication number	US-12085330-B2
Application number	US-202017620054-A
Country	US
Kind code	B2
Filing date	Jul 9, 2020
Priority date	Jul 9, 2019
Publication date	Sep 10, 2024
Grant date	Sep 10, 2024

Abstract

Provided is a vacuum adiabatic body. The vacuum adiabatic body includes a conductive resistance sheet configured to connect the first plate to the second plate so as to reduce a heat transfer amount between the first plate and the second plate and a cover assembly configured to cover the conductive resistance sheet. The cover assembly includes an inner cover configured to protect an inside, an outer cover configured to protect an outside, and a front cover configured to protect a front side. The front cover is thicker than the plate. The protection of the conductive resistance sheet and the improvement of the adiabatic effect may be obtained.

First claim

The invention claimed is:

1. A vacuum adiabatic body comprising:
a first plate;
a second plate;
a sheet configured to seal the first plate and the second plate so as to provide a vacuum space between the first plate and the second plate; and
a cover assembly configured to cover the sheet,
wherein the cover assembly includes:
an inner cover provided at an inner side of the vacuum adiabatic body,
an outer cover provided at an outer side of the vacuum adiabatic body, and
a front cover provided at a front side of the vacuum adiabatic body,

wherein the front cover is disposed outside the sheet and includes a cover adiabatic material made of a resin material and having a thickness greater than that of each of the first plate and the second plate so that generation of dew on a periphery of the sheet is reduced, and
wherein the front cover further includes a pair of arms made of a metal material and spaced apart from each other by the cover adiabatic material so that a heat transfer amount between the inner cover and the outer cover is greater than that between an inside and an outside of the front cover.

2. The vacuum adiabatic body according to claim 1 , wherein the sheet has a thickness equal to or less than that of each of the outer cover and the inner cover, and
the inner cover has a thickness equal to or less than that of the first plate.

3. The vacuum adiabatic body according to claim 1 , wherein three times a thickness of the inner cover or the outer cover is equal to or less than a thickness of the front cover.

4. The vacuum adiabatic body according to claim 1 , wherein the inner cover and the outer cover are sealed on to the first plate and the second plate.

5. The vacuum adiabatic body according to claim 1 , wherein
at least a portion of a magnetic body is provided inside the front cover,
at least a portion of the magnetic body is provided on at least one of a front surface or a rear surface of the front cover,
at least a portion of the magnetic body is provided behind the front cover, or
at least a portion of the sheet is made of a magnetic material and is provided behind the front cover.

6. The vacuum adiabatic body according to claim 1 , wherein the front cover has an elastic modulus (N/m) greater than that of the inner cover or the outer cover.

7. The vacuum adiabatic body according to claim 1 , wherein the front cover has yield strength (N/m 2 ) less than that of the inner cover or the outer cover.

8. The vacuum adiabatic body according to claim 1 , wherein the pair of arms extend from the front cover to provide at least a portion of at least one of the inner cover or the outer cover.

9. The vacuum adiabatic body according to claim 8 , wherein the pair of arms are spaced a predetermined distance from each other.

10. A refrigerator comprising:
a main body having an opening with respect to an accommodation space;
a door configured to open and close the opening of the main body;
a gasket installed on the door and configured to seal between the door and the main body around the opening;
a magnet provided on the gasket; and
a cover assembly provided on the main body around the opening,
wherein the cover assembly includes:
a front cover including a nonmetal material, the front cover being configured to cover a front of the main body at the opening; and
at least one of an inner cover including a metal material and that extends from the front cover and along an inner surface of the main body, or an outer cover including a metal material and that extends from the front cover and along an outer surface of the main body,

wherein the front cover includes a cover adiabatic material made of a resin material, and a pair of arms made of a metal material and coupled to the cover adiabatic material, and
wherein at least one of the pair of arms includes a coupling portion coupled to the cover adiabatic material, and a shoulder bent from the coupling portion and extending along an outer surface of the cover adiabatic material.

11. The refrigerator according to claim 10 , wherein the front cover includes a magnetic body.

12. The refrigerator according to claim 10 , wherein the front cover has a thickness greater than that of each of the inner cover and the outer cover.

13. The refrigerator according to claim 10 , wherein
the main body includes a vacuum adiabatic body,
the vacuum adiabatic body includes:
a first plate configured to define at least a portion of the accommodation space;
a second plate separated from the first plate, and
a sheet configured to seal the first plate and the second plate so as to provide a vacuum space between the first plate and the second plate, and
the front cover is configured to cover the sheet.

14. The refrigerator according to claim 13 , wherein at least one of the inner cover or the outer cover is sealed to the main body.

15. The refrigerator according to claim 13 , wherein at least a portion of one or more of the first or second plates is positioned behind the front cover.

16. A vacuum adiabatic body comprising:
a first plate;
a second plate;
a sheet configured to seal the first plate and the second plate so as to provide a vacuum space; and
a cover assembly configured to cover the sheet,
wherein the cover assembly includes:
a cover adiabatic material that includes resin material and is configured to thermally insulate the sheet;
at least one of a first arm that includes a metal material and extends from the cover adiabatic material and along the first plate, or a second arm that includes a metal material and extends from the cover adiabatic material and along the second plate; and
a shoulder extending from the at least one of a first arm or the second arm, and

wherein the shoulder is provided on an inner surface of the cover adiabatic material and between the sheet and the cover adiabatic material.

17. The refrigerator vacuum adiabatic body according to claim 16 , wherein the cover adiabatic material includes:
a first cover adiabatic material provided at an inner side facing the vacuum space;
a second cover adiabatic material provided at an outer side facing an outside of the refrigerator; and
a cover coupling configured to couple the first cover adiabatic material to the second cover adiabatic material.

18. The vacuum adiabatic body according to claim 17 , wherein the cover coupling holds at least one of the first arm or the second arm.

Assignees

• Lg Electronics Inc

Inventors

• Jung Wonyeong
• Kim Daewoong
• Chun Chanho
• Lee Sungsub
• Lee Jangseok

Classifications

• F25D2201/14

  using subatmospheric pressure · CPC title

• F25D23/087

  Sealing strips · CPC title

• F25D23/065 Primary

  Details · CPC title

• F25D23/028

  Details · CPC title

• F25D11/02

  with cooling compartments at different temperatures · CPC title