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Application filed by Ігор Вікторович Кутафін, Игорь Викторович Кутафин, Володимир Олександрович Вершина, Владимир Александрович Вершина, Микола Іванович Дерев'янко, Николай Иванович Деревянко, Валерій Іванович Дерев'янко, Валерий Иванович Деревянко, Віктор Олексійович Кутафін, Виктор Алексеевич КутфинfiledCriticalІгор Вікторович Кутафін
Priority to UA99042341ApriorityCriticalpatent/UA33892A/en
Publication of UA33892ApublicationCriticalpatent/UA33892A/en
Water heating boiler has furnace, radiation and convective heating surfaces. In pipes being heated it has inserts with lugs that form screw-like motion of water, turbulization of flow.