Rotary kinetic fluid motors or pumps – With control means responsive to non-cyclic condition... – Responsive to moving member developed fluid force – current...
Patent
1990-05-17
1991-08-20
Look, Edward K.
Rotary kinetic fluid motors or pumps
With control means responsive to non-cyclic condition...
Responsive to moving member developed fluid force, current...
415 47, 415119, 4151821, 415206, 417 32, 417 43, 4174238, 431 20, F01D 2112
Patent
active
050409433
ABSTRACT:
An exhaust fan blower is provided for use in induced draft furnaces. An integrally molded fan housing and exhaust conduit is provided of a material impervious to the corrosive effects of exhaust gas condensates. The conduit is of a round cross section to mate with an associated flue pipe. The fan blower includes a conduit in communication with a pilot light for constantly venting the pilot light irrespective of operation of the blower. A first bore in the fan blower housing provides means for monitoring the vacuum developed therein, while another bore provides a means for thermally sensing a blocked or restricted flue condition. A flange and mounting lugs about the periphery of the fan blower housing provide a means for mounting the system to the side of a furnace panel, while sealing such mounting engagement. A motor mounting bracket for the fan blower serves as a cooling fan guard and heat sink, having a bearing contact mounting seat cast integrally to the bracket.
REFERENCES:
patent: 3650262 (1972-03-01), Root et al.
patent: 4009705 (1977-03-01), Smith
patent: 4477019 (1984-10-01), Breitbach
patent: 4752210 (1988-06-01), Trent
patent: 4951651 (1990-08-01), Shellenberger
Conner Michael P.
Dwyer Mark K.
Ametek-Lamb Electric
Look Edward K.
Verdier Christopher M.
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