One aspect of this disclosure provides a heat exchanger that comprises a first panel half coupled to a corresponding second panel half that form a passageway having at least a first chamber adjacent an inlet end of the passageway and a second chamber and overlapping interference patterns formed in each of the first and second panel halves that extend along at least a portion of the length of the passageway and located between at least the first and second chambers.

A gas burner assembly may include a gas burner and a burner cap. The burner may include a distribution cavity fluidly coupled with a gas inlet and a plurality of gas discharge ports. The burner cap may have a glass body characterized by a peripheral edge, and a metal element encapsulating the peripheral edge. The glass body may overlie at least a portion of the distribution cavity, and the metal element may shield the peripheral edge.

Adjustable gas grill burners are disclosed. Methods of making and using adjustable gas grill burners are also disclosed.

Adjustable gas grill burners are disclosed. Methods of making and using adjustable gas grill burners are also disclosed.

One aspect of the disclosure provides a termination for use with a furnace. The termination, in one embodiment, includes a face plate including an exhaust region and an air supply region, the face plate having a front surface and an opposing back surface. The termination, in this embodiment, further includes an exhaust termination portion extending from the back surface in the exhaust region, the exhaust termination portion capable of engaging a terminal end of a variety of different size exhaust conduits associated with a furnace. The termination, in this embodiment, further includes an opening extending through the face plate in the exhaust region, the opening aligned with the exhaust termination portion.

One aspect of this disclosure provides a heat exchanger that comprises a first panel half coupled to a corresponding second panel half that form a passageway having at least a first chamber adjacent an inlet end of the passageway and a second chamber and overlapping interference patterns formed in each of the first and second panel halves that extend along at least a portion of the length of the passageway and located between at least the first and second chambers.

An alternative-fuel gas orifice, a gas furnace configured to employ the same and a method of designing a gas orifice. In one embodiment, the gas orifice includes: (1) a body having an aperture extending therethrough and including: (1a) a metering neck having a cross-sectional area such that a given flow rate of a gas is established when the gas is delivered to the gas orifice at a given alternative-fuel delivery pressure and (1b) a diffuser having a cross-sectional area larger than the cross-sectional area of the metering neck and a length such that the gas achieves a substantially laminar flow before exiting the diffuser.

A furnace system includes an air intake that includes a pipe portion and a seal component configured to couple with the pipe portion. The furnace system also includes an internal drain disposed internal to the air intake. The internal drain includes a trough configured to collect liquid flowing along an inner surface of the pipe portion. The internal drain also includes an opening in the trough configured to guide the liquid collected in the trough to a passage through the air intake to a location outside the air intake.

The present invention relates to a burner module for a cooker and a cooker and a method for such a burner module. The burner module according to the invention comprises: a carrier with which the burner module can be placed as a unit on a worktop; an outlet for gas provided on the carrier; an inlet provided on the carrier for supplying gas; and control means provided between an inlet and the outlet for realizing a gas flame.

A condensation trap comprising an inlet chamber, a vent chamber and an outlet chamber. The inlet chamber is configured to receive condensate fluid through an external opening therein. The vent chamber is in fluid communication with the inlet chamber via a first passageway that includes an internal opening of the inlet chamber. The internal opening is located substantially at an opposite end of the vent chamber as the external opening. The outlet chamber is in fluid communication with the vent chamber via a second passageway that includes an internal opening in a sidewall of the vent chamber and an interior opening in an end of the outlet chamber. The outlet chamber is configured to transmit the condensate fluid through an exterior opening located at an opposite end of the outlet chamber. A vent volume portion is greater than a total volume of an internal space of the inlet chamber.