HEAT EXCHANGER
First Claim
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1. A heat exchanger for use in a condensing gas boiler comprising:
- a plurality of heat exchanger sections arranged parallel to one another, each heat exchanger section comprising at least one internal flow passage having an inlet and an outlet for passage of a heat exchange medium and a plurality of elongate fins formed or provided on at least one side face of each heat exchanger section to define flue gas flow channels between adjacent heat exchanger sections;
a burner to produce a hot flue gas;
means to guide the flue gas from the burner through the flow channels from a primary part to a secondary part of the heat exchanger; and
means to promote unidirectional flue gas flow before entering the primary part.
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Accused Products
Abstract
The invention relates to heat exchangers used in high efficiency condensing boilers, in particular condensing gas boilers, and a method of manufacturing such heat exchangers. The heat exchanger comprises means to promote unidirectional flue gas flow before entering the primary part. This provides advantages in efficiency.
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Citations
30 Claims
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1. A heat exchanger for use in a condensing gas boiler comprising:
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a plurality of heat exchanger sections arranged parallel to one another, each heat exchanger section comprising at least one internal flow passage having an inlet and an outlet for passage of a heat exchange medium and a plurality of elongate fins formed or provided on at least one side face of each heat exchanger section to define flue gas flow channels between adjacent heat exchanger sections; a burner to produce a hot flue gas; means to guide the flue gas from the burner through the flow channels from a primary part to a secondary part of the heat exchanger; and means to promote unidirectional flue gas flow before entering the primary part. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification