A heat exchanger comprises a stack of sets of fins and tubes attached to or encompassed by embossed plates comprising a void. In some embodiments, the fins overlap the void having a peripheral margin of the fin attached to the peripheral margin around the void. In some embodiments, the fins comprise through fluid apertures allowing lateral fluid flow. In some embodiments, the plates comprise lateral peripheral protrusions enabling selective sealing of gaps between adjacent stacked plates by unselective application of heat or adhesive to a face of the heat exchanger. In some embodiments, the plates comprise uniformizing protrusions in a fluid inlet and/or outlet zone that reduce the amount of non-uniform fluid mass flow between different channel protrusions of heat exchanging zones of the set. Also disclosed are methods for assembly and selective sealing of the heat exchanger and an apparatus comprising the same.

A heat exchanger comprises a stack of sets of fins and tubes attached to or encompassed by embossed plates comprising a void. In some embodiments, the fins overlap the void having a peripheral margin of the fin attached to the peripheral margin around the void. In some embodiments, the fins comprise through fluid apertures allowing lateral fluid flow. In some embodiments, the plates comprise lateral peripheral protrusions enabling selective sealing of gaps between adjacent stacked plates by unselective application of heat or adhesive to a face of the heat exchanger. In some embodiments, the plates comprise uniformizing protrusions in a fluid inlet and/or outlet zone that reduce the amount of non-uniform fluid mass flow between different channel protrusions of heat exchanging zones of the set. Also disclosed are methods for assembly and selective sealing of the heat exchanger and an apparatus comprising the same.

A heat dissipation device includes a base plate and a plurality of fins arranged on the base plate. Each fin includes a fin body including a first metal sheet and a second metal sheet coupled to each other, wherein the fin body is curved and includes a first portion and a second portion transverse to the first portion, an evaporation channel defined in the first portion, one or more connecting channels disposed in the first portion and in fluid communication with the evaporation channel, a condensation channel defined in the second portion, and one or more auxiliary channels disposed in the second portion and in fluid communication with the one or more connecting channels and the condensation channel.

A heat dissipation device includes a base plate and a plurality of fins arranged on the base plate. Each fin includes a fin body including a first metal sheet and a second metal sheet coupled to each other, wherein the fin body is curved and includes a first portion and a second portion transverse to the first portion, an evaporation channel defined in the first portion, one or more connecting channels disposed in the first portion and in fluid communication with the evaporation channel, a condensation channel defined in the second portion, and one or more auxiliary channels disposed in the second portion and in fluid communication with the one or more connecting channels and the condensation channel.

An apparatus and method are disclosed for the automated manufacture of a duct flange profile to make small duct fittings, including a TDF duct flange profile. The duct flange profile is directed to small part duct fittings with section widths up to about 16 inches in 20 to 26 gauge metal. The apparatus includes a bending head assembly having a drive roller, a pressure roller, an anvil and a bending leaf and a roll form assembly.

An apparatus and method are disclosed for the automated manufacture of a duct flange profile to make small duct fittings, including a TDF duct flange profile. The duct flange profile is directed to small part duct fittings with section widths up to about 16 inches in 20 to 26 gauge metal. The apparatus includes a bending head assembly having a drive roller, a pressure roller, an anvil and a bending leaf and a roll form assembly.

A heat dissipation device includes a base plate and a plurality of fins arranged on the base plate. Each fin includes a fin body including a first metal sheet and a second metal sheet coupled to each other, wherein the fin body is curved and includes a first portion and a second portion transverse to the first portion, an evaporation channel defined in the first portion, one or more connecting channels disposed in the first portion and in fluid communication with the evaporation channel, a condensation channel defined in the second portion, and one or more auxiliary channels disposed in the second portion and in fluid communication with the one or more connecting channels and the condensation channel.

A heat dissipation device includes a base plate and a plurality of fins arranged on the base plate. Each fin includes a fin body including a first metal sheet and a second metal sheet coupled to each other, wherein the fin body is curved and includes a first portion and a second portion transverse to the first portion, an evaporation channel defined in the first portion, one or more connecting channels disposed in the first portion and in fluid communication with the evaporation channel, a condensation channel defined in the second portion, and one or more auxiliary channels disposed in the second portion and in fluid communication with the one or more connecting channels and the condensation channel.

A fin manufacturing method and apparatus includes: a first inter-row slit device that forms, by forming in a thin metal plate having a plurality of openings a plurality of slits extending in a longitudinal direction of the thin metal plate while leaving an uncut portion between the plurality of slits, metal strips partially coupled to each other in a transverse direction; a feed roller and a feeding device that convey, in the longitudinal direction, the metal strips in which the plurality of slits is formed by the first inter-row slit device; and a stacking device that (i) forms fins by cutting the uncut portion via which the metal strips are coupled to each other, to separate the metal strips and by cutting the metal strips at regular length intervals and (ii) stacks the formed fins.

A fin manufacturing method and apparatus includes: a first inter-row slit device that forms, by forming in a thin metal plate having a plurality of openings a plurality of slits extending in a longitudinal direction of the thin metal plate while leaving an uncut portion between the plurality of slits, metal strips partially coupled to each other in a transverse direction; a feed roller and a feeding device that convey, in the longitudinal direction, the metal strips in which the plurality of slits is formed by the first inter-row slit device; and a stacking device that (i) forms fins by cutting the uncut portion via which the metal strips are coupled to each other, to separate the metal strips and by cutting the metal strips at regular length intervals and (ii) stacks the formed fins.