|6681723||Hot water heater|
The present invention is directed to an apparatus for heating hot water. The present apparatus utilizes at least two individual hollow conduits that pass through the interior of a hot water tank. Independent inshot gas burners mounted in the conduits pass...
|4026246||Boiler for central heating installations and heat exchange elements for said boiler|
A wet base boiler of the multi-sectioned type, that is, a boiler in which the fire box is surrounded by water. Each heat exchanger section of the boiler being arranged and constructed to provide an improved heat transfer surface when contacted by the heat...
|4022162||Boiler having a separable furnace and heat exchanger|
A boiler which is primarily designed for the central heating of apartments has two separable elements constituted by the boiler furnace and a heat exchanger. The heat exchanger of single-unit construction surmounts a completely open section of the boiler ...