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US 6,647,932 B1Granted
Compact boiler with tankless heater for providing heat and domestic hot water
AssigneeUnited Dominion Industries, Inc.
InventorsShuqing Cui, Neil Rolph, Ayman Abdel-Rehim
Life of this patent
Estimating the term…
Abstract
A small and compact boiler for providing hot water for indoor heating and domestic hot water and method of operation are provided. The boiler includes a three way valve configured to circulate boiler water through a heating circuit when indoor heat is required, and bypass the heating circuit and circulate the boiler water through the heat exchanger to enable production of domestic hot water.
Claims14
A boiler for providing a hot fluid comprising:
- a first heat exchanger configured to exchange heat between at least one first fluid and a heat source and having a first cold fluid intake configured to inlet the first fluid into the first heat exchanger and a first hot fluid outlet configured to outlet the first fluid from the first heat exchanger;
- a second heat exchanger configured as at least part of the first heat exchanger and configured to exchange heat between the first and a second fluid and having a second cold fluid intake configured to inlet the second fluid into the second heat exchanger and a second hot fluid outlet configured to outlet the second fluid from the second heat exchanger;
- and
- a three way valve configured to selectively divert fluid from at least one of the first hot fluid outlet and a circuit to the first cold fluid intake, and
- wherein the three way valve also provides fluid to the first cold fluid intake from at least one of a fluid source, directly from the first hot fluid outlet, and fluid that has circulated through the circuit.
2 more elements
A boiler for providing a hot fluid comprising:
- a first heat exchanger configured to exchange heat between at least one first fluid and a heat source having a first cold fluid intake configured to inlet the first fluid into the first heat exchanger and a first hot fluid outlet configured to outlet the first fluid from the first heat exchanger;
- a second heat exchanger configured as at least part of the first heat exchanger and configured to exchange heat between the first and a second fluid, the second heat exchanger having a second cold fluid intake configured to inlet the second fluid into the second heat exchanger and a second hot fluid outlet configured to outlet the second fluid from the second heat exchanger;
- and
- means for selectively diverting fluid from the first hot fluid outlet to at least one of the first cold fluid intake and a circuit, and
- wherein the means for diverting fluid provides fluid to the first cold fluid intake from at least one of a fluid source, directly from the first hot fluid outlet, and fluid that has circulated through the circuit.
2 more elements
Dependencies are inferred from the claim text.