Back to results
US 4,732,712 AGranted
Steam injection water heater
AssigneeLeslie Controls, Inc.
InventorsGregory Burnham, Jack Kahrs, Anthony T. Posluszny
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeLeslie Controls, Inc.
InventorsGregory Burnham, Jack Kahrs, Anthony T. Posluszny
Estimating the term…
An apparatus for controlling the temperature of a supply of water by selective injection of steam is disclosed. The apparatus comprises a water supply conduit which includes a water inlet end and a water outlet end. Steam is supplied to the apparatus by a steam supply conduit which supplies steam to the water supply conduit at a predetermined location between the water inlet end and the water outlet end of the water supply conduit. The steam entering the water supply conduit is controlled by a steam supply control valve located on the steam supply conduit. A pressure differential sensing means senses the difference in pressure along the water supply conduit between a first point in said water supply conduit, upstream of said predetermined location and a second point in the water supply conduit downstream of the predetermined location. A means for controlling the control valve means in response to this sensed pressure differential is also required.
Apparatus for controlling the temperature of a supply of water comprising a water supply conduit including a water inlet end and a water outlet end, a steam supply conduit for supplying steam to said water supply conduit at a predetermined location between said water inlet end and said water outlet end, steam supply control valve means for controlling the supply of said steam to said water supply conduit at said predetermined location thereon, pressure differential sensing means for sensing the differential pressure in said water supply conduit between a first point in said water supply conduit upstream of said predetermined location and a second point in said water supply conduit downstream of said predetermined location, and valve control means for controlling said steam supply control valve means in response to said sensed differential pressure.
A method for controlling the temperature of a supply of water comprising conducting a supply of water in a conduit from a water inlet to a water outlet, supplying steam to said supply of water at a predetermined location intermediate of said water inlet and said water outlet, sensing the differential pressure in said conduit between a first point downstream of said predetermined location and a second point upstream of said predetermined location, and controlling supply of said steam to said supply of water in response to said sensed differential pressure.
Dependencies are inferred from the claim text.