Vacuum insulation panel manufacturing method, and vacuum insulation panel

• US 10,639,743 B2
• Filed: 05/31/2017
• Issued: 05/05/2020
• Est. Priority Date: 06/13/2016
• Status: Active Grant

• Current Assignee: Nippon Steel Nisshin Co., Ltd. (Nippon Steel Corporation)
• Original Assignee: Nippon Steel Nisshin Co., Ltd. (Nippon Steel Corporation)
• Inventors: Azuma, Tsutomu, Mishima, Hirohisa, Nakako, Takefumi
• Primary Examiner(s): Thomas, Alexander S
• Application Number:
  US16/308,948
• Publication Number:
  US 20190143450A1
• Time in Patent Office: 1,070 Days
• CPC Class Codes: B23K 11/061 for welding rectilinear seams
• CPC Class Codes: B23K 11/16 taking account of the properties of the material to be welded
• CPC Class Codes: B23K 11/34 Preliminary treatment
• CPC Class Codes: B23K 11/36 Auxiliary equipment B23K11/31 takes precedence
• CPC Class Codes: B23K 2103/172 wherein at least one of the layers is non-metallic
• CPC Class Codes: B23K 26/103 the laser beam rotating around the fixed workpiece B23K26/28 takes precedence
• CPC Class Codes: B23K 26/206 Laser sealing
• CPC Class Codes: B23K 26/21 by welding
• CPC Class Codes: B23K 26/28 of curved planar seams
• CPC Class Codes: B23K 26/32 taking account of the properties of the material involved
• CPC Class Codes: B23K 26/60 Preliminary treatment
• CPC Class Codes: B23K 37/0229 the guide member being situated alongside the workpiece
• CPC Class Codes: B23K 37/0408 for planar work
• CPC Class Codes: B23K 37/0443 Jigs
• CPC Class Codes: B32B 2307/304 Insulating
• CPC Class Codes: B32B 3/00 Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
• CPC Class Codes: E04B 1/803 with vacuum spaces included in the slab
• CPC Class Codes: F16L 59/029 layered
• CPC Class Codes: F16L 59/065 using vacuum F16L59/075 takes precedence
• CPC Class Codes: F25D 2201/14 using subatmospheric pressure
• CPC Class Codes: F25D 23/066 : Liners
• CPC Class Codes: Y10T 428/231 : Filled with gas other than air; or under vacuum

Abstract

A vacuum insulation panel manufacturing method that makes it possible to manufacture low-cost, high-performance vacuum insulation panels, and a vacuum insulation panel are provided. This method of manufacturing a vacuum insulation panel involves: a stacking step in which a first metal plate is stacked on one side of an insulating core material, and in which a backing member having an opening and a second metal plate having an evacuation port are stacked, with the opening and the evacuation port stacking, on the other surface of the core member in the order of backing member and second metal plate from the core member side; a first welding step for welding outwards of where the core member is arranged in the first metal plate and the second metal plate; an evacuating step from the evacuation port to create a vacuum in an inner area which is held between the first metal plate and the second metal plate and in which the core member is arranged; and a laser welding step in which, in a state in which the inner area is made into a vacuum by the evacuating step, the evacuation port is sealed by means of a sealing material and the sealing material, the second metal plate and the backing member are laser welded.

Claims

1. A vacuum insulation panel comprising:

an insulating core member;

a first metal plate arranged on one side of the core member;

a backing member having an opening and arranged on the other surface of the core member;

a second metal plate arranged across the backing member on the other surface of the core member and having an evacuation port at a position stacking with the opening; and

a sealing member sealing the opening,

wherein outer sides of regions of the first metal plate and the second metal plate between which the core member is sandwiched are welded,

wherein the sealing member, the second metal plate, and the backing member are welded, and

wherein a vacuum state is created between the first metal plate and the second metal plate.

2. The vacuum insulation panel according to claim 1, wherein the sealing member is a magnetic body.

3. The vacuum insulation panel according to claim 1, wherein the backing member has an annular shape.

4. The vacuum insulation panel according to claim 1, wherein the backing member has the same diameter as the sealing member.