초록 ▼

A flue heat recovery device for furnaces or boilers comprises a rectangular housing with a corrosion-resistant or corrosion-proof wall in the housing dividing the space into an air chamber and a flue gas chamber. The flue gas chamber has a gas inlet opening which can be connected to the flue of a fu

A flue heat recovery device for furnaces or boilers comprises a rectangular housing with a corrosion-resistant or corrosion-proof wall in the housing dividing the space into an air chamber and a flue gas chamber. The flue gas chamber has a gas inlet opening which can be connected to the flue of a furnace, and a gas outlet opening for discharging the flue gas from the flue gas chamber to a chimney. The air chamber has an air inlet and an air outlet, with a fan connected to the outlet for drawing air through the air chamber in a direction opposite to the flow of flue gas in the flue gas chamber. A plurality of finned heat pipes extend through the corrosion-proof wall from the flue gas chamber into the air chamber. The chambers are mounted on a base tray with the air chamber supporting the heat pipes and separable from the flue gas chamber for cleaning.

대표청구항 ▼

In a flue heat recovery device for furnaces including a flue gas chamber, a clean air chamber, and heat pipes for transferring heat from said flue gas chamber to said clean air chamber, the improvement comprising, in combination, a rectangular base tray having upturned edges on the long sides and on

In a flue heat recovery device for furnaces including a flue gas chamber, a clean air chamber, and heat pipes for transferring heat from said flue gas chamber to said clean air chamber, the improvement comprising, in combination, a rectangular base tray having upturned edges on the long sides and one short end thereof, a three-sided member sealably secured at its bottom edges to said upturned edges at said one end of said base tray, a top plate secured to the top edges of said three-sided member, a corrosion-proof wall releasably and sealably engaged with the open side of said three-sided member and top plate and forming therewith a flue gas chamber, means defining a flue gas inlet opening in said base tray opening into said flue gas chamber for connection to a furnace, means defining a flue gas outlet opening in said top plate opening for connection to a chimney flue, a four walled, open-ended box member removably supported on the other end of said base tray between the upturned long side edges thereon with one of the walls thereof supporting said corrosion-proof wall, said four-walled box member defining a clean air chamber having a clean air inlet opening, means defining a clean air outlet opening in said base tray opening from said clean air chamber, a fan for flowing air through said clean air chamber, a plurality of parallel heat pipes supported by and extending through said corrosion-proof wall, said pipes being inclined at an angle of at least about 10°to the horizontal with the lower ends thereof in said flue gas chamber and the upper ends thereof in said clean air chamber, said clean air chamber and the heat pipes carried thereby being removable as a unit from said base tray.