EP 4023774 A4 20231011 - SHAFTLESS AIR HEATER
Title (en)
SHAFTLESS AIR HEATER
Title (de)
WELLENLOSER LUFTERHITZER
Title (fr)
UNITÉ DE CHAUFFAGE D'AIR SANS COLONNE
Publication
Application
Priority
- RU 2020119925 A 20200616
- RU 2021050166 W 20210615
Abstract (en)
[origin: EP4023774A1] What is claimed is a shaftless air heater, which comprises a burner system located at the top of a pre-chamber (1) with a chamber for mixing gas and air. The prechamber (1) has a shell (2) with a lining, inside of which an annular channel is provided, the channel being bounded by an inside annular wall (3) and by an outside annular wall (4), thereby forming a gas collector (12). The lining of the pre-chamber (1) is supported on a metal annular beam (5), one wall of which represents a continuation of the shell (2), while the other wall forms a shell (7) of a dome-like combustion chamber (6), and the base thereof forms the support of the pre-chamber (1). The combustion chamber (6) with the shell (7) and a lining (8) is arranged under and coaxially with the pre-chamber (1). The metal annular beam (5) is permanently joined with the shells (2) and (7) and is provided with a base plate (9) from above, thus forming an air collector (10). The outside annular wall (4) has an opening with a branch pipe (18) for supplying gas. Outlet gas openings (13) are arranged in rows in the top portion of the inside annular wall (3), and air openings (14) are located in the bottom portion of the inside annular wall (3). The invention provides for increased operational safety and reliability due to an increased stability and durability of the shaftless air heater.
IPC 8 full level
CPC (source: EP KR RU)
C21B 9/00 (2013.01 - RU); C21B 9/02 (2013.01 - EP KR); C21B 9/14 (2013.01 - EP KR); F23C 3/002 (2013.01 - EP); F24H 3/00 (2013.01 - RU); F24H 3/06 (2013.01 - KR)
Citation (search report)
- [A] US 2010323314 A1 20101223 - KALUGIN YAKOV [RU]
- [A] CN 209495326 U 20191015 - ZHENGZHOU YUXING HOT BLAST STOVE TECH CO LTD
- [A] CN 207062313 U 20180302 - MCC CAPITAL ENG & RES INC LTD
- See references of WO 2021256966A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 4023774 A1 20220706; EP 4023774 A4 20231011; BR 112022010928 A2 20221227; CN 115917012 A 20230404; JP 2023502104 A 20230120; JP 7351010 B2 20230926; KR 20220059520 A 20220510; RU 2753208 C1 20210812; WO 2021256966 A1 20211223
DOCDB simple family (application)
EP 21826662 A 20210615; BR 112022010928 A 20210615; CN 202180042430 A 20210615; JP 2022528606 A 20210615; KR 20227011383 A 20210615; RU 2020119925 A 20200616; RU 2021050166 W 20210615