| 摘要 |
FIELD: heating.SUBSTANCE: boiler comprises a heat exchanger, with direct and return nozzles, a gas burning device, a smoke stack base. In the return nozzle there is an automatic valve with a normally open nozzle. The boiler also comprises a condensation heat exchanger, consisting of at least two cylindrically wound thin-walled corrugated pipes from anticorrosion materials, for instance, stainless steel, connected in parallel and having direct and return nozzles, connected with direct and return nozzles of the boiler, besides, the direct nozzle of the condensation heat exchanger is connected simultaneously and with the direct and return nozzles of the boiler by means of an automatic valve with the normally open nozzle.EFFECT: reduced dimensions of a boiler, cheapening of boilers production and increased usage of condensation effect.1 dwg |
