A method of making a heat exchanger that includes providing a plurality of tubes. Each of the plurality of tubes has exterior cladding on an exterior surface, interior cladding on an interior surface, and a weld seam extending along the length of the plurality of tubes. The method further includes arranging the plurality of tubes such that each of the plurality of tubes is inserted into a corresponding header slot with the weld seams of each of the plurality of tubes oriented downward with respect to gravity, and brazing each of the plurality of tubes and the header after each tube has been inserted into a corresponding header slot. The brazing causes the interior cladding to melt and pool inside the plurality of tubes and along an interior side of the weld seams to form a clad cover portion encases debris generated while forming the weld seams.

A heat exchanger for an ice-making machine comprises a generally cylindrical, tubular body defining a generally cylindrical, internal heat exchange surface, and at least one refrigerant circuit comprising at least one refrigerant passage disposed about the outer surface of the tubular body, at least a portion of the refrigerant circuit being brazed to the outer surface of the tubular body.

Disclosed is an evaporator for an ice maker including: a refrigerant pipe having a circular cross-section, with refrigerant flowing therethrough; and a pair of ice making plates disposed on opposite sides of the refrigerant pipe. The refrigerant pipe is disposed between inner side surfaces of the ice making plates facing each other, and rounded parts are provided by being formed outwards at a place where the refrigerant pipe is located such that the rounded parts cover both sides of the refrigerant pipe by being in close contact therewith.

A heat exchanger for use in high pressure environments, such as in a gas turbine engine, includes an outer casing, a tubular element within the outer casing and an inner sleeve within the tubular element. The tubular element has an outer surface and an inner surface. The outer casing and outer surface of the tubular element define a first annular passage through which a first fluid flow path extends. The inner sleeve and inner surface of the tubular element define a second annular passage through which a second fluid flow path extends. The first annular passage is sealed against the outer surface of the tubular element and the second annular passage is sealed within the inner surface of the tubular element.

The present disclosure relates to a process for the production of a thermally conductive article that includes (1) pleating a thermally anisotropic sheet having a thermal conductivity in a first plane that is higher than the thermal conductivity in a second plane perpendicular to the first plane and (2) compacting the pleated structure. An article obtained by the process, the use of the thermally conductive article for production of a device, and the device are also disclosed.

A smart air conditioner for reduction in fine dust and harmful gas includes: an eternal chamber including a first side coupled to communicate with an interior and a second side communicating with an exterior; an internal chamber disposed to pass through an inside of the external chamber and including a first side coupled to communicate with an interior and a second side communicating with an exterior; an external chamber damper installed in the external chamber and controlling air flow; and an internal chamber damper installed in the internal chamber and controlling air flow.

The present invention relates to a heat exchanger (20) comprising a protective device (1), mutually parallel tubes (22) through which a first fluid circulates, and perpendicular fins (26) connecting two successive flat tubes (22), a second fluid circulating between said flat tubes (22) by passing through said fins (26), said protective device (1) being apertured so as to allow the circulation of the second fluid through the fins (26), said protective device (1) comprising fixing spikes (7) which are inserted forcibly between the fins (26).

A heat exchanger including a plurality of parallel fins, and at least one tube passing through the parallel fins, wherein the tube carries a fluid that exchanges heat with air passing through the heat exchanger. The parallel fins each include a plurality of air deflecting members formed therein. Each air deflecting member is bent substantially orthogonally relative to a planar surface of each fin, and each air deflecting member is configured to direct the air passing through the heat exchanger to increase turbulence of the air, and to impinge the air against adjacent parallel fins, and to balance air flow across the heat exchanger and decrease maldistribution of the air flow through the heat exchanger.

Described herein is a heat exchanger comprising a plurality of plate fins. At least one plate fin comprises a plurality of holes arranged in one or more rows, and a contoured region formed adjacent to one of the plurality of holes and having a sinusoidal corrugation. The contoured region comprises a plurality of elongate adjustable lance elements, wherein the sinusoidal corrugation in each of the rows comprises three half-waves of a first wave size in the middle portion of the corresponding row, and two half-waves of a second wave size on lateral ends of the corresponding row, wherein the second wave size is smaller than the first wave size.

A heat exchanger includes heat transfer tubes and a fin disposed between the heat transfer tubes. The fin includes a fin portion defining a flat surface and one or more heat transfer promoter groups including heat transfer promoters. The heat transfer promoters extend from one adjacent heat transfer tube to the other adjacent heat transfer tube and slope relative to the fin portion. The heat transfer promoters include a first heat transfer promoter disposed most upstream in the air flow direction. A first drain space is provided between the first heat transfer promoter and an air upstream part of the fin portion that is located closest to and upstream of the first heat transfer promoter in the air flow direction. A second drain space is provided between the heat transfer promoters that are adjacent. The first drain space has a larger area than the second drain space.