Patent ID: 7549464
Filing Date: 2009-06-23
Classification: F28D,F28F

Abstract:
1. A heat exchanger block, comprising: two horizontal plates having mutually adjoining surfaces and mutually abutting ribs defining grooves in said mutually adjoining surfaces of said two horizontal plates, said grooves complementing one another and forming flow passages, defined by said mutually abutting ribs of said two horizontal plates, for a gaseous medium; hoods each being placed onto a respective one of said two horizontal plates and having edges; said two horizontal plates having outwardly directed surfaces acting as heat transfer areas and defining, along with said hoods, spaces adjoining said outwardly directed surfaces, for a cooling medium flow; encircling seals for sealing gaps between said outwardly directed surfaces of said two horizontal plates and said edges of said hoods; a seal for a gap between said two horizontal plates; a device for holding the block together; flue-gas connections; and screws and a retaining ring fastening each of said flue-gas connections to said hoods.