US 12,111,108 B2
Transport roller for heating furnaces
Kiyoshi Matsumoto, Nagoya (JP); Takanori Uehara, Nagoya (JP); Hidetaka Kato, Nagoya (JP); and Masaharu Ohashi, Nagoya (JP)
Assigned to Noritake Co., Limited, Nagoya (JP)
Filed by Noritake Co., Limited, Nagoya (JP)
Filed on Apr. 14, 2022, as Appl. No. 17/659,261.
Claims priority of application No. 2021-070435 (JP), filed on Apr. 19, 2021.
Prior Publication US 2022/0333864 A1, Oct. 20, 2022
Int. Cl. F27D 3/02 (2006.01); B65G 39/02 (2006.01); F27B 9/24 (2006.01)
CPC F27D 3/026 (2013.01) [B65G 39/02 (2013.01); F27B 9/2407 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A heating system for heating a heating target, the heating system comprising:
a heating furnace including a first side wall portion and a second side wall portion opposing the first side wall portion, the heating furnace having therein a transport space between the first side wall portion and the second side wall portion, the heating furnace configured to heat the heating target within the transport space such that an internal temperature within the transport space reaches between about 500° C. and about 1000° C. when the heating furnace heats the heating target therein; and
a first transport roller disposed at least partly within the heating furnace and arranged to support and transport the heating target within the heating furnace, the first transport roller including
a first metal outer tubular member spanning across the transport space from the first side wall portion of the heating furnace to the second side wall portion of the heating furnace,
a first ceramic inner tubular member disposed at least partly within the first metal outer tubular member and free-spanning within the first metal outer tubular member across the transport space from the first side wall portion of the heating furnace to the second side wall portion of the heating furnace,
a first air layer formed between the first ceramic inner tubular member and the first metal outer tubular member and spanning across the transport space from the first side wall portion of the heating furnace to the second side wall portion of the heating furnace, and
a first plurality of ring-shaped metal projections, each ring-shaped metal projection of the first plurality of ring-shaped metal projections arranged to support the heating target and having a ring shape along an outer peripheral surface of the first metal outer tubular member.