Device for recovery of the fume heat and discharge of combustion fumes for a boiler

摘要

The present invention relates to a device for recovery of fume heat and discharge of the combustion fumes for a domestic boiler. The device according to the invention can be connected to a boiler and comprises at least one first tubular element, which may be traversed by fumes produced in a boiler. Said first tubular element comprises a fume-inlet section and a fume-discharge section opposite to the fume-inlet section. The device likewise comprises heat-exchanger means housed within the first tubular element for transferring at least part of the thermal energy of the fumes to water at a lower temperature circulating within said heat-exchanger means. The latter means comprise a plurality of heat-exchange elements connected together so as to configure a hydraulic circuit within the first tubular element such that transfer of the thermal energy is obtained partially in conditions of equicurrent and partially in conditions of countercurrent.