Control valve assembly
OwnerWarren M. Wilsoninventor
Life of this patent
Estimating the term…
Abstract
An assembly for use in a system for heating water comprises a heat exchanger for heating cold water to produce overheated hot water and a blending chamber in which the overheated hot water is mixed with cold water to produce blended hot water. An inlet valve controls the flow of cold water to the heat exchanger. A bypass valve controls the flow of cold water into the blending chamber. A flow restrictor restricts the flow of cold water from the bypass valve into the blending chamber when the demand for blended hot water increases above a predetermined amount.
Claims10
An assembly comprising:
- a heat exchanger for heating cold water to produce overheated hot water,
- a blending chamber in which the overheated hot water from said heat exchanger is blended with cold water to produce blended hot water suitable for use at a hot water tap,
- a first valve means for controlling flow of cold water into said heat exchanger according to the demand for hot water at the hot water tap,
- a second valve means for controlling flow of cold water into said blending chamber, and
- a flow restrictor means for restricting flow of cold water from said second valve into said blending chamber when the demand for blended hot water is increased above a predetermined amount.
An assembly comprising a housing, said housing having a first inlet for receiving an incoming flow of cold water from a cold water source, a first outlet for supplying cold water to a heat exchanger, a second inlet for receiving overheated hot water from said heat exchanger, a blending chamber in which overheated hot water is blended with cold water to produce hot water, and a second outlet for supplying blended hot water to a point of use, first valve means for controlling the flow of cold water from said first inlet to said first outlet, second valve means for controlling the flow of cold water into said blending chamber, control means responsive to changes in the demand for blended hot water for varying the flow of cold water through said first and second valve means and for restricting flow of cold water into said blending chamber when the demand for hot water increases above a predetermined amount.
Dependencies are inferred from the claim text.