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US 5,325,821 AGranted
Method and device in closed heating plants
OwnerStig Gloerseninventor
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OwnerStig Gloerseninventor
Estimating the term…
A method of utilizing the high energy values of fossile fuels in central heating boiler systems. The boiler system comprises a processor which includes an air heat pump (5) which functions to cool the system flue gases by condensation. A first fan (10) generates a first circulation (C.sub.1) of boiler room air, via the air heat pump (5), this circulation of air also passing through a heat exchanger (4) where heat exchange takes place with the flue gases. A second air circulation (C.sub.2) is generated with the aid of a flue-gas fan (7) which removes flue gases from the boiler by suction, thereby generating a subpressure in the boiler room so that fresh air will be drawn in from the ambient surroundings, this air passing through the heat exchanger (4). A lower pressure is maintained on that side of the heat exchanger (4) on which the air/flue gas mixture (C.sub.2) flows into the heat exchanger, whereas a higher pressure is maintained on the other side of the heat exchanger (4) on which the air/flue gas mixture (C.sub. 2) flows into the heat exchanger (4) on which the cooling boiler-room air circulates (C.sub.1). This will ensure that flue gases will always flow out to the free atmosphere, via the heat exchanger (4). The exhaust air/flue gas mixture is caused to pass a cooling device (21) and thereby pre-cooled prior to passing through the heat exchanger in said second circulation.
A method of utilizing the high energy values of fossile fuels in closed boiler systems with the aid of a processor which includes a heat pump and a heat-exchanger, in which heat exchange is effected between two air flows circulating through the heat exchanger by generating a first circulation of boiler-room air, via the heat pump and the heat exchanger, and by generating a second circulation through the heat exchanger by extracting exhaust air or flue gases, or a mixture thereof, by suction, said second circulation generating a subpressure in the boiler room such as to cause external fresh air to flow in through the heat exchanger, characterized in that the exhaust air or the flue gases, or said mixture thereof, is or are caused to pass a cooling device and thereby pre-cooled prior to passing through the heat exchanger in said second circulation.
An arrangement claim 7, for utilizing the high energy values of fossile fuels in a closed boiler system, said arrangement comprising a processor which includes a heat pump (5) and a heat exchanger (4), and fan means (10) provided for forcing boiler room air through one side of the heat exchanger (4) and a suction chamber (6) which functions to draw exhaust air or flue gases, or a mixture thereof, through the other side of the heat exchanger (4) by suction, characterized of a cooling device (21) mounted between the boiler (2) of said boiler system and the heat exchanger (4), said cooling device being intended to pre-cool the exhaust air or the flue gases, or said mixture thereof, prior to its/their entry into the heat exchanger (4).
Dependencies are inferred from the claim text.