EP 0313669 A4 19900905 - EJECTOR APPARATUS OF FLUIDIZED BED HEAT-TREATING FURNACE
Title (en)
EJECTOR APPARATUS OF FLUIDIZED BED HEAT-TREATING FURNACE
Publication
Application
Priority
JP 11353387 A 19870512
Abstract (en)
[origin: WO8808884A1] This invention relates to an ejector apparatus of a fluidized bed heat-treating furnace for performing heat-treatment of a work A put into a fluidized bed (2) by circulating an exhaust gas at the upper layer portion of a retort (1) driven by a compressed gas and enclosing therein the fluidized bed (2) from the bottom of the retort (1) to its inside so as to cause fluidization of the fluidized bed (2). The main body (5a) of an ejector (5) consists of at least three members (7, 8, 9), and at least two systems of compressed gases are supplied to contracting portions (8d, 9d) from compressed gas inlets (12, 15) defined between the ejector members (7, 8, 9) through gaps formed between the ejector members (7, 8, 9). The gap of each ejector member (7, 8, 9) can be adjusted suitably by adjusting means (F, G). Therefore, the absorption efficiency of the ejector (5) can be freely adjusted over a wide range. Since a center rod of a prior art apparatus does not exist, the ejector (5) has a simple structure as a whole and is moreover compact.
IPC 1-7
IPC 8 full level
C21D 1/53 (2006.01); F04F 5/22 (2006.01); F04F 5/46 (2006.01); F27B 15/10 (2006.01); F27B 15/18 (2006.01)
CPC (source: EP)
C21D 1/53 (2013.01); F04F 5/22 (2013.01); F04F 5/467 (2013.01); F27B 15/10 (2013.01); F27B 15/18 (2013.01)
Citation (search report)
- [A] GB 2030689 A 19800410 - ENERGY EQUIP
- [A] GB 2023268 A 19791228 - WORSLEY & CO LTD G P
- See references of WO 8808884A1
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
WO 8808884 A1 19881117; DE 3885057 D1 19931125; DE 3885057 T2 19940505; EP 0313669 A1 19890503; EP 0313669 A4 19900905; EP 0313669 B1 19931020
DOCDB simple family (application)
JP 8800454 W 19880512; DE 3885057 T 19880512; EP 88904262 A 19880512