Hot water boiler
AssigneeTricentrol Benelux B.V.
InventorsJohannes Bouman, Peter J. M. van der Linden
Life of this patent
Estimating the term…
Abstract
A hot water boiler, e.g. for central heating, has two castings which contain water passages and are connected together to enclose a combustion chamber and above it a flue. From the flue, the burned gases pass downwardly through passages outside the castings into which ribs on the castings project. In order to improve thermal efficiency by achieving considerable condensation of water vapor on the burned gases, the castings are located on a sump into which the downward passages for burned gas open and which has means for removing condensate collecting in it. A blower is provided to extract the burned gas from the sump.
Claims8
A hot water boiler having
- (a) an assembly comprising at least two juxtaposed hollow castings which contain water passages for the water being heated and are joined together to form said assembly, which encloses a combustion chamber and a flue for burned gases extending upwardly from said combustion chamber,
- (b) passages extending downwardly outside said castings on opposite sides of said assembly and connected at their upper ends to the said burned gas flue, whereby the burned gases flow downwardly through the said downwardly extending passages,
- (c) a plurality of ribs cast integrally with the castings on the outsides thereof so as to project into the said downwardly extending passages,
- (d) a sump which is located below the castings and into which the said downwardly extending passages open so that the burned gases flow into the sump,
- (e) a discharge conduit for the burned gases,
- (f) a blower connected to the sump and to the discharge conduit for forced discharge of the burned gases from the sump to the discharge conduit,
- (g) means for the extraction from the sump of condensate from the burned gases which in use collects therein, wherein said water passages in the castings run mainly upwardly substantially straight and vertically with a widening upwardly where the combustion chamber meets the burned gas flue and wherein said ribs on the outside of the assembly of castings project farther at the upper end of the castings than at the lower end.
A hot water boiler of the type having at least two juxtaposed hollow castings containing passages for water and joined together to form an assembly enclosing a combustion chamber and a burned gas flue above the chamber, the boiler including passages for the burned gases which passages are connected to said flue and also extend downwardly outside said castings on opposite sides of said assembly, said castings including ribs which project into said downwardly extending passages, the boiler including:
- a sump disposed below said castings into which sump said downwardly extending passages open;
- a burned gas blower connected to said sump to force the gases from the sump into a gas discharge outlet;
- means in the sump for removal of any condensate collecting in the sump, wherein further the water passages in the castings run mainly upwardly substantially straight and vertically with a widening upwardly where the combustion chamber meets the burned gas flue, and wherein the ribs on the outside of the assembly of castings are projecting farther at the upper end of the castings than at the lower end.
Dependencies are inferred from the claim text.