GB190516343A - Improvements in connection with Apparatus for Heating by Steam Circulation. - Google Patents

Abstract

16,343. Westwood, J. W., Barter, C., and Taylor, T. Aug. 11. Air, heating. - Relates partly to apparatus for utilizing exhaust steam, particularly from condensing or non- densing engines, for heating air in ventilating and similar processes. Fig. 10 shows a general arrangement in which steam from the exhaust steam-pipe b is led through a casing I to an accelerator controlled by the temperature of a range of pipes c or the like. The accelerator, which is shown detached in Fig. 2, consists of a live-steam jet B which with the nozzle D<2> serves as an injector to force the exhaust steam entering through a valve J into the conical chambers D<3>. The nozzle D<2> is attached to one of two perforated disks D, D<1> which rotate upon each other. The disks D may be rotated through a spindle G and worm thread or teeth H, Fig. 3, so as to close more or less the opening F. An indicator G' shows the extent to which the ports F are opened. The.plunger B<1> controlling the supply of live steam may be actuated thermostatically through levers B<3> connected to the apparatus heated. The disk D' may be actuated similarly. If the supply of exhaust steam is limited, or if the ports F are closed, the nozzle B may serve as a reducing-valve. Water may be introduced into the casing to obtain a more perfect vacuum. The acclerator is connected by a flange to apparatus for heating air or liquids, such as radiators or coils. Where a vacuum exists in the exhaust pipe a a back-pressure valve, which may be balanced by levers and counterweights and may work automatically, closes the exhaust-steam inlet to the accelerator. One form of valve consists of a plunger or flap J which works in a vertical seating and is fixed to an arm J<5> having pivoted bearings at J<1> so that the valve on operating swings away from its seat. The plunger may be held to its seat by springs, and the ends of the arms J<5> may be fitted into sleeve rollers J<2> running on a flat surface formed' on each side of the interior of the valve casing. A similar valve P, Fig. 10, may be fitted in the exhaust pipe b on the outlet side of the branch a leading to the accelerator. The valves I, P may be connected by levers so that as one opens the other closes. The exhaust steam may be passed through a superheater, shown in Fig. 6, which may be located in a by-pass to a main flue such as a boiler or steamgenerator flue. The dampers L, L' controlling the admission of the heated gases to the superheater may be controlled by hand or thermostatically by an expansion rod M. An additional accelerator may be attached to the steam outlet of the superheater.