127results about "Fire-box steam boilers" patented technology

The invention relates to a continuous steam generator provided with an evaporator through flow heating surface which is disposed in a heating gas channel which can be cross flown in an approximately vertical manner in a heating gas device, said evaporator through flow heating surface comprising a plurality of parallel connected steam generating pipes enabling a flow medium to flow through, and an overheating heating surface which is arranged downstream from the evaporator through flow heating surface comprising a plurality of parallel connected overheating pipes enabling the evaporated flow medium to flow through, also enabling production and operational costs to be reduced and enabling the temperature of the steam on the outlet of the overheating heating surface to be controlled in a comparatively simple and flexible manner. The steam end-point of the flow medium is displaced to the overheating pipe, if required. The continuous heating surfaces and the overheating heating surfaces are combined to form one functional unit such that the overheating heating surface can be used as a steam heating surface in a continuous steam generator which is particularly suitable for carrying out said method.

A boiler for making super heated steam by indirect heat exchange of water against a hot gas, said boiler being a vertically oriented vessel comprising a spirally formed conduit around the vertical axis of the vessel, which vessel is provided with an inlet for hot gas fluidly connected to the lower end of the conduit for upwardly passage of hot gas through the spirally formed conduit, an outlet for cooled gas fluidly connected to the upper end of the conduit, an inlet for fresh water and a vessel outlet for super heated steam,said vessel further provided with a water bath space in the lower end of the vessel and a saturated steam collection space above said water bath space,said spirally formed conduit comprising of a spirally formed evaporating section located in the water bath space and a spirally formed super heater section at the upper end of the vessel, wherein the conduit of the super heater section is surrounded by a second conduit forming an annular space between said super heater conduit and said second conduit, said annular space being provided with an inlet for saturated steam fluidly connected to the saturated steam collection space and an outlet for super heated steam located at the opposite end of said annular space and fluidly connected to the vessel outlet for super heated steam, wherein outlet or inlet are positioned in water bath space.

A boiler apparatus includes a housing defining an interior boiler chamber and a burner element arranged to be in thermal communication with the boiler chamber. An ignition device is provided for instigating combustion of an inlet gas stream, and is arranged adjacent one edge of the burner element. A gas restricting device is utilized for restricting contact between the burner element and the inlet gas stream such that the inlet gas stream is initially incident upon the one edge of the burner element, thereby forcing the inlet gas stream to propagate across the burner element from the one edge.

With an installation construction method for boiler facilities, the boiler facilities comprise a boiler building configured of a steel structure, and a boiler main unit suspended within the boiler building from the upper portion of the boiler building. A portion of the boiler building is constructed, a portion of the boiler main unit is suspended from the upper portion of the partially-constructed boiler building, and while the remaining steel structure portions are being added to the partially-constructed boiler building so as to construct the boiler building, the remaining portions of the boiler main unit are added to complete the boiler main unit.

A compact gas fired steam generator comprises a water tank with designated steam separation zone, boiling zone and a solids separation zone, a burner for burning gaseous fuel with air for producing combustion products and a flat tubular type heat exchanger immersed in water in the water tank. The combustion products are passing through the heat exchanger in an indirect heat transfer relationship with water in boiling zone thereby boiling, circulating and evaporating the water in boiling zone and in an indirect heat transfer relationship with cold make up water passing upwardly through solids separation zone thereby preheating cold make up water and cooling combustion products and recovering latent heat and condensing moisture present in combustion products. The cooled combustion products are discharged to outdoors and the collected condensed moisture is discharged to drain.The produced steam is separated from the boiling water in steam separation zone, the solids present in the boiling water are separated from the circulating boiling water and accumulated in solids separation zone and the accumulated solids are cooled by the incoming cold make up water and intermittently discharged from solids separation zone by a water pump together with the incoming cold make up water to drain.The high rate internal circulation of boiling water, the extended self cleaning heat transfer surfaces of the flat tubular type heat exchanger immersed in the boiling water, the recovery of latent heat from flue gases and the discharge of cooled solids with cold make up water provide an exceptionally compact steam generator with overall thermal efficiency of up to 95% and with maintenance free unattended operation.The compact steam generator can be used in humidifying of space air in buildings, in heating of air in domestic central air heating systems and in industrial processes requiring clean steam.