Apparatus for providing instant hot water

Fluid handling – With heating or cooling of the system – With burner

Patent

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Details

126361, 137341, 219309, 200 819R, F24H 110, F24H 114

Patent

active

042365481

ABSTRACT:
A control system for providing instant hot water at a hot water tap comprising a control unit adapted to be interposed in the fluid line between the source of water supply and the hot water tap. A heating unit is also interposed in the fluid line between the control unit and the hot water tap. The heating unit includes a closed heating chamber, a pipe arranged within the chamber and comprising a portion of the fluid line between the control unit and the hot water tap. A heating means is provided within the heating chamber for heating the pipe. The control unit comprises a fluid passageway therethrough constituting a portion of the fluid line between the source of supply and the heating unit. A flapper chamber is formed in the passageway and an inlet pipe from the source of supply has an inlet end disposed within the flapper chamber. A flapper is pivotally mounted within the flapper chamber and disposed over the inlet end of the pipe when there is no water passing through the control unit. The flapper chamber is provided with a flat surface which is disposed within the swinging path of movement of the flapper, which swinging path of movement is determined by the movement of the flapper when caused to move by the passage of water through the control unit. A diaphragm is received within an opening in the flat surface and is adapted to be contacted by a nose on the flapper when water is passing through the unit. Externally of the flapper chamber, the diaphragm is provided with an outwardly projecting finger which is adapted to engage an electrical means mounted within the control unit adjacent a diaphragm and externally of the flapper chamber. When the finger contacts the electrical means, the electrical means is energized to activate the heating means.

REFERENCES:
patent: 1351779 (1920-09-01), Mather
patent: 1888737 (1932-11-01), Richmond
patent: 3963889 (1976-06-01), Stonich

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