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    Economizer
    11.
    发明授权
    Economizer 失效
    经济学家

    公开(公告)号：US3580225A

    公开(公告)日：1971-05-25

    申请号：US3580225D

    申请日：1969-11-24

    申请人： COY OIL CO INC

    发明人： COY JOHN W

    IPC分类号： F22D1/24 ,  F22B33/00 ,  F28F9/02

    CPC分类号： F22D1/24

    摘要： A heating system having a furnace with a flue and a chimney in communication with the flue for venting combustion gases to the atmosphere is provided with an economizer heat exchanger intermediate the flue and the chimney for extracting an additional quantity of heat from the combustion gases to improve the efficiency of the heating system. The economizer comprises a horizontally disposed cylindrical shell mounting a bank of tubes adjacent its bottom and having an inlet chamber at one end connected to the flue and an outlet chamber at its other end connected to the chimney, the chambers being in communication with one another through the tubes. The tubes are supported at their ends and they are spaced apart by means of walls extending across the shell, the walls forming therebetween a cavity through which fluid is flowed upwardly across the tubes for extracting heat therefrom as the combustion gases flow through the tubes. A fan is mounted in the outlet chamber for inducing the gases to flow through the tubes and out the chimney, the fan having a greater capacity for removing the gases than the furnace has for producing them. In addition, means is provided to regulate the pressure in the combustion chamber of the furnace, the pressure being reduced below atmospheric due to the operation of the fan.