A heat exchanging assembly, comprising a heat exchanger core body. The heat exchanger core body comprises first-type plates and second-type plates; each first-type plate has a first orifice, a second orifice, and a third orifice; each second-type plate has a first orifice and a second orifice; along the length or width direction of the heat exchange core body, the third orifice is located between the first orifice and the second orifice; a first flow channel has a first partial fluid path, a second partial fluid path, a third partial fluid path, and an inter-plate path; the first partial fluid path is formed at the first orifice; the second partial fluid path is formed at the second orifice; and the inter-plate path is communicated with the first partial fluid path, the second partial fluid path, and the third partial fluid path.

The invention relates to a charge air cooler (5) for fuel engine comprising: a casing having an inlet (16) and an outlet (20), a heat exchanger (10) within the casing between the inlet (16) and the outlet (20), a thermally responsive draining mechanism (50, 60) for draining condensates, the draining mechanism (50, 60) being configured to drain condensates when temperature within the charge air cooler (5) is below a defined temperature, draining mechanism comprising a drain port (58, 68), a valve (51, 61, 52, 62, 53, 63) arranged on the drain port (58, 68), an actuation device (53, 63, 64) for moving the valve between an opened state and a closed state,
wherein the actuation device includes a phase change material.

Planar element adapted to form, when stacked with a plurality of other such elements, a heat exchanger, comprising an inlet region, a first zone adapted to direct flow from the inlet region towards a second zone, a second zone comprising at least one cutout in the plane of the planar element, adapted to accommodate a cooling core, a third zone, adapted to direct flow from the second zone towards an outlet region and an outlet region, the planar element comprising a first blockage protrusion disposed along a first group of said side edges, the first group comprising at least a side edge adjacent to said outlet region, and a second blockage protrusion disposed along a second group of said side edges, the second group comprising at least a side edge adjacent to said inlet region.

A condensate trap for providing improved gas seal to a heating, ventilation, air conditioning, and refrigeration (HVAC/R) system. The trap can include an interior reservoir containing a volume of fluid to create a gas seal between an inlet pathway and an output. The interior reservoir can be accessed through an access port, by removing a removable cover, for maintenance and inspection. The trap can include vents or vent precursors for aiding in drainage of excess fluid, as well as early detection of problem conditions. The trap can be made from modified parts put together in a specific manner, or through purpose-built parts. The trap can include liquid level sensors and inspection windows to aid in early detection of problem conditions.

A heat exchanger includes a plurality of fins extending along upper and lower directions, and a flat tube extending crosswise to the plurality of fins. Each of the plurality of fins has a first side edge portion and a second side edge portion, the first side edge portion and the second side edge portion extending along the upper and lower directions. The flat tube has end portions in the longitudinal axis direction of the flat tube, the end portions including a first end portion and a second end portion. The first end portion is positioned closer to the first side edge portion than the second end portion is to the first side edge portion. Each of the plurality of fins includes at least one water guide portion formed at at least one of a position between the first side edge portion and the first end portion, and a position between the second side edge portion and the second end portion, the water guide portion extending in the upper and lower directions, a lower edge portion positioned below the flat tube in the upper and lower directions, and a protruding edge portion positioned below the water guide portion and protruding downwardly relative to the lower edge portion.

Provided is a gas furnace including a primary heat exchanger and a secondary heat exchanger through which a combustion gas produced by the combustion of a fuel gas flows. The gas furnace includes: a coupling box serving as an intermediary to connect the primary heat exchanger and the secondary heat exchanger; a collect box connected to the secondary heat exchanger, for letting in the combustion gas passed through the secondary heat exchanger; an inducer connected to the collect box, for inducing a flow of the combustion gas; and a bypass pipe connected to one side of the coupling box and including a bypass pipe for guiding the combustion gas passed through the primary heat exchanger to a hot water supply tank for supplying hot water to an indoor space.

A transfer tube for a thermal transfer device can include at least one wall having an inner surface and an outer surface, where the inner surface forms a cavity, where the at least one wall further has a first end and a second end. The first end can be configured to couple to a terminus of a heat exchanger of the thermal transfer device. The second end can be configured to couple to a collector box of the thermal transfer device. At least a portion of the at least one wall can be disposed in a vestibule of the thermal transfer device. The cavity can be configured to simultaneously receive a first fluid that flows from the first end to the second end and a second fluid that flows from the second end to the first end.

A heat exchanger, a heat exchanger unit, and a refrigeration cycle apparatus in which frost melt water is inhibited from reaching an upper surface of a header include: heat transfer tubes arranged in parallel with each other; a fin connected to one of the heat transfer tubes; and a header connected to the heat transfer tubes and having a header end surface along a direction in which the heat transfer tubes are arranged in parallel. The fin has an edge facing the header and extends in a first direction perpendicular to the axes of the heat transfer tubes. An end portion of the fin projects in the first direction relative to the header end surface, and another end portion of the fin in the first direction is positioned closer in the first direction to the heat transfer tubes than the header end surface is.

A heat exchanger includes a plurality of flat tubes in which refrigerant flows and a plurality of fins provided between the plurality of flat tubes and configured to transfer heat of refrigerant flowing in the plurality of flat tubes. An upstream end portion of each of the plurality of flat tubes in an air flow direction is located at the same position as an upstream end portion of each of the plurality of fins or protrudes farther than the upstream end portion of each of the plurality of fins, and an opening port is formed at the upstream end portion of each of the plurality of flat tubes or at the upstream end portion of each of the plurality of fins.

A heating, ventilating, and air conditioning (HVAC) system includes a furnace having a primary heat exchanger and a secondary heat exchanger, where the primary heat exchanger and the secondary heat exchanger form a heat exchange relationship between an airflow and an exhaust gas, and where the primary heat exchanger is positioned upstream of the secondary heat exchanger, a burner configured to generate the exhaust gas, a sensor configured to monitor an ambient temperature, and a control system configured to receive feedback from the sensor, compare the feedback to a threshold, operate the furnace in a first mode when the ambient temperature exceeds the threshold, and operate the furnace in a second mode when the ambient temperature is at or below the threshold, where the furnace operates above a condensation temperature when in the second mode, such that the exhaust gas does not condense when operating in the second mode.