Sealing and air/fuel mixture flow metering plate for gas furnace

Heating systems – Automatic control – Combined radiator and boiler

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Details

239396, 431354, F24H 308

Patent

active

042431760

ABSTRACT:
An orifice plate for metering a mixture of fuel and air to a blower for supply of the mixture to a burner positioned in a central plenum of a heat exchange system, the present plate further provides the sole sealing structure necessary for sealing conduit members which communicate the blower with a fuel regulator. The present orifice plate can be configured with apertures of differing size and number to facilitate field alternation of the heat capacity of the system and to allow rapid conversion of the system to alternate fuels without the need for removing and installing additional sealing structure. The ratio of fuel to air present in the mixture which is burned in the system is controlled by the size and/or number of apertures formed in the orifice plate.

REFERENCES:
patent: 2585290 (1952-02-01), Walker
patent: 3371699 (1968-03-01), Riot
patent: 3787169 (1974-01-01), Gjerde
patent: 3967590 (1976-07-01), Hays et al.
patent: 3997109 (1976-12-01), Hays
patent: 4045159 (1977-08-01), Vishi et al.
patent: 4151745 (1979-05-01), Cordy et al.

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