Patent ID: 11965377
Assignee: VKR HOLDING A/S
Field: Civil engineering (Other fields)
Classification: CPC E  H  Y | IPC E

Claim 0:
1. A vacuum insulated glazing unit comprising:
a first glass sheet and a second glass sheet arranged in parallel, wherein each glass sheet comprises an exterior surface and an interior surface, wherein the interior surfaces of the glass sheets are opposing each other and separated by a gap,
one or more support structures arranged in said gap,
a side seal arranged proximate a periphery of said glass sheets and enclosing said gap, and wherein one of said glass sheets comprises
an evacuation hole enclosed by an evacuation hole surface extending from the interior surface to the exterior surface of a respective said glass sheet,
an evacuation member being a tube comprising an outer member surface,
a sealing material providing a hermetic seal between the outer evacuation member surface and said respective glass sheet, and the sealing material having a sealing material surface extending between a first intersection defined between a surface of the respective glass sheet and the sealing material surface and a second intersection defined between the outer evacuation member surface and the sealing material surface,

wherein said sealing material surface at the first intersection has a first contact angle defined between said sealing material surface and the surface of the respective glass sheet, which first contact angle is below 40 degrees,
wherein the evacuation hole comprises at least a first hole part, a second hole part and a third hole part adjacently arranged in thickness direction of the respective glass sheet measured along a first axis extending substantially perpendicular to the exterior surface of the respective glass sheet,
wherein the first hole part is arranged between the exterior surface of the respective glass sheet and the second hole part,
wherein the second hole part is arranged between the first hole part and third hole part, and
wherein the third hole part is arranged between the second hole part and the interior surface of the respective glass sheet,
wherein the first hole part is of a first diameter, the second hole part is of a second diameter and the third hole part is of a third diameter, wherein the first diameter is larger than the second diameter and the third diameter, and the second diameter is larger than the third diameter,
wherein the evacuation member is positioned at least partially in said first hole part and said second hole part (4b), and
wherein the evacuation tube is closed such that an opening of the evacuation tube protruding away from the gap is sealed.