Title:
工業炉の点検用覗き窓
Document Type and Number:
Japanese Patent JP6776942
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an inspection hole for an industrial furnace capable of sufficiently suppressing adhesion and accumulation of dust on an entire surface including a peripheral portion of an outer edge constituting a window plate of a glass window and of facilitating work for replacing the glass window.SOLUTION: An inspection hole 1 includes: a window plate installation box 11 installed in an inspection opening of an outer wall; a window frame 12 formed in an outer opening of the window plate installation box 11; a window plate 13 placed on the window frame 12; and a gas supply section 14 installed on one side surface of the window plate installation box 11 and supplying purge gas to an inner space of the window plate installation box 11. A pair of window plate nipping plates 121 that can nip an end of the window plate 13 are formed on a bottom side and both lateral sides of the window frame 12. A window plate end surface gap width that is a mean value of a distance between each surface of the window plate 13 and each inner surface of the window plate nipping plate 121 is set to 0.5 mm or more, and a window plate lateral side gap width that is a mean value of a distance between each lateral side of the window plate 13 and each opposing lateral side of the window frame 12 is set to 0.5 mm or more.SELECTED DRAWING: Figure 2
Inventors:
Tomohiro Watanabe
Application Number:
JP2017034064A
Publication Date:
October 28, 2020
Filing Date:
February 24, 2017
Export Citation:
Assignee:
Sumitomo Metal Mining Co., Ltd.
International Classes:
F23M11/04; C22B1/02; C22B7/02; C22B19/02; F27D21/02
Domestic Patent References:
| JP2011112306A | ||||
| JP1123200U | ||||
| JP1141755U | ||||
| JP56149250U | ||||
| JP8049988A | ||||
| JP2003021326A | ||||
| JP6313540A | ||||
| JP9222217A | ||||
| JP2010007182A |
Foreign References:
| US5306209 |
Attorney, Agent or Firm:
Masayuki Masabayashi
Hayashi Ichiyoshi
Hayashi Ichiyoshi