Patent ID: 8689586

Claim:
A glass-melting device for producing glass fibers, comprising: a first glass-melting tank; a conduit extending downwardly from the first glass-melting tank; a first sucking device for exposing the first glass-melting tank to a reduced-pressure atmosphere; a second glass-melting tank provided on a lower portion of the conduit and exposed to an atmospheric-pressure atmosphere; and a bushing provided on a bottom portion of the second glass-melting tank and having a number of nozzles, a heat insulating material accommodated in a decompression housing, wherein the first glass-melting tank and the conduit are covered with the decompression housing in which a pressure is reduced by the first sucking device, a partition member for partitioning the heat insulating material in the decompression housing, and a heat insulating material insertion opening for inserting an elastic heat insulating material into the decompression housing, wherein the heat insulating material insertion opening is formed immediately under the partition member.