Secondary circulation unit
OwnerNikolaus L. Laing, Ludwig Ludininventors
Life of this patent
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Abstract
A device for effecting secondary circulation of water into a hot water tank not having a return opening. The arms of a T-fitting are place in series with the distribution line near the outlet port of the water tank. A return line, continuous at one end with the distal portion of the distribution line, is continuous at the other end with a relatively small internal line which lies within the leg of the T-fitting, one arm of the T-fitting, and extending through the outlet port into the water tank. A relatively low power pump and a sinking-ball valve are placed in series with the return line to cause the flow of water in the secondary circulation system to flow in one direction only.
Claims6
A water circulation system for a commercial or domestic building having a hot water distribution line and a hot water tank having a heat source, a cold water inlet port and a hot water outlet port in the water section of the tank, said system comprising:
- a T-connector having two arms and a leg;
- the two arms being placed in series with the distribution line near the outlet port;
- an internal line extending through the leg, past one arm of the T-connector, through the outlet port, and into the upper region of the water tank;
- a return line continuous at one end with the distal end of the distribution line, and at its other end with the internal line;
- and
- a pump placed in series with the return line.
Dependencies are inferred from the claim text.