Boiler, and a silencer for a flue gas duct in a boiler,申请号US201214122518-传众专利搜索

Boiler, and a silencer for a flue gas duct in a boiler

申请公布号：US9389001(B2)

申请号：US201214122518

申请日期：2012.05.24

申请公布日期：2016.07.12

申请人：

VALMET TECHNOLOGIES OY

发明人：Kainu Vesa;Ojanpera Juha

分类号：F01N1/02;F24H9/00;F23L15/04;F22B37/06;F23M20/00

主分类号：F01N1/02

代理机构：

Oliff PLC

代理人：Oliff PLC

地址：Espoo FI

摘要：A boiler includes a flue gas duct and heat exchanger pipes in the flue gas duct. The boiler includes a planar silencer plate, which silencer plate includes sound absorbing material, and said first silencer plate being placed downstream of one of said heat exchanger pipes in the flow direction of flue gases in said flue gas duct. Furthermore, a silencer for a flue gas duct with a rectangular cross-section in a boiler, the silencer including at least a first and a second planar silencer plate substantially parallel to the flow direction of flue gases, the silencer plates including sound absorbing material. The first silencer plate is placed at an angle to the second silencer plate, wherein the width of the resonating area of the flue gas duct becomes narrower in two directions transverse to the flow direction of the flue gases.

主权项：1. A boiler comprising: a flue gas duct with a width W and a depth L; heat exchanger pipes in the flue gas duct, for heating or preheating liquid, steam or air; a first planar silencer plate substantially parallel to the flow direction of the flue gases, the first silencer plate comprising noise absorbing material, said first silencer plate being placed downstream of any of said heat exchanger pipes in the flow direction of the flue gases in said flue gas duct, and the distance d between said first silencer plate and said heat exchanger pipe being smaller than the width W of the flue gas duct or smaller than the depth L of the flue gas duct; at least one noise absorbing wall, the wall comprising said first silencer plate, and the wall truncating the resonating area transverse to the flow direction of the flue gases in the flue gas duct; a subfloor level for maintaining the silencer plate or the flue gas duct; and a subfloor space left between the subfloor level and the silencer plate, wherein the silencer plate suppresses noise caused by turbulence of the flow of the flue gases.