Abstract: A plate heat exchanger includes a stack of plate pairs with gaps between adjacent pairs, arranged to provide flow paths for a first fluid to pass through inner volumes of the plate pairs while simultaneously allowing a second fluid to flow over the outer surfaces of the plate pairs. At least one cylindrical fluid manifold for the first fluid extends through the plate pairs. A non-planar cap is arranged at one end of the plate heat exchanger to close off the cylindrical fluid manifold. A reinforcement plate is arranged at that end between the non-planar cap and an end plate of the plate heat exchanger. The position of the non-planar cap relative to a central axis of the cylindrical fluid manifold is maintained in order to prevent failure of the plate heat exchanger due to internal pressurization.

Abstract: A plate heat exchanger includes a stack of plate pairs with gaps between adjacent pairs, arranged to provide flow paths for a first fluid to pass through inner volumes of the plate pairs while simultaneously allowing a second fluid to flow over the outer surfaces of the plate pairs. At least one cylindrical fluid manifold for the first fluid extends through the plate pairs. A non-planar cap is arranged at one end of the plate heat exchanger to close off the cylindrical fluid manifold. A reinforcement plate is arranged at that end between the non-planar cap and an end plate of the plate heat exchanger. The position of the non-planar cap relative to a central axis of the cylindrical fluid manifold is maintained in order to prevent failure of the plate heat exchanger due to internal pressurization.

Abstract: A brazed heat exchanger includes plates that are stacked or nested to define flow channels for multiple media. Inserts are arranged within at least some of the flow channels. Two different braze alloys having compositions based on different metals are used to form braze joints between the plates and the inserts. In some cases, a copper-based braze alloy is used for joints corresponding to flow channels for one of the media in order to provide high pressure-resisting strength to those flow channels, while an iron-based braze alloy is used for joints corresponding to flow channels for another of the media where dissolved copper is undesirable.

Abstract: A heat exchanger including a stack of tubes, a cover plate, and a housing in which the stack of tubes is arranged. The housing includes first, second, and third adjacent housing sides having a respective first, second, and third housing openings each having a edge around the respective housing opening. The second housing opening is closed by the edge of the cover plate on the edge of the second housing opening. The housing further includes first and second exposed struts. The first exposed strut is positioned between the first and the second housing openings and the second exposed strut is positioned between the second and the third housing openings, and a first side of an edge of the cover plate is fastened to the first exposed strut and a second side of the edge of the cover plate is fasted to the second exposed strut.

Abstract: A brazed heat exchanger includes plates that are stacked or nested to define flow channels for multiple media. Inserts are arranged within at least some of the flow channels. Two different braze alloys having compositions based on different metals are used to form braze joints between the plates and the inserts. In some cases, a copper-based braze alloy is used for joints corresponding to flow channels for one of the media in order to provide high pressure-resisting strength to those flow channels, while an iron-based braze alloy is used for joints corresponding to flow channels for another of the media where dissolved copper is undesirable.

Abstract: The invention relates to a heat exchanger which is brazed in a brazing furnace, comprising stacked heat exchanger parts which provide first channels and second channels, and with at least two brazing materials, the one brazing material in the first channels being different than the other brazing material in the second channels. According to one alternative, said heat exchanger is improved by virtue of the fact that there is the other or the one brazing material in one or in a few of the first channels or the second channels or in one or in a few of the first and the second channels, or the other and the one brazing material are present arranged in part regions.

Abstract: A heat exchanger having a cooler block including a stack of plates arranged in plate pairs. The cooler block defines flow paths and flow ducts and has an outer circumference. At least some of the plate pairs include a bent edge having an elongation, the elongation on one plate pair in the stack extending to the next plate pair in the stack such that a substantially smooth contour of the cooler block is formed in at least one circumferential region.

Abstract: A heat exchanger including a stack of tubes, a cover plate, and a housing in which the stack of tubes is arranged. The housing includes first, second, and third adjacent housing sides having a respective first, second, and third housing openings each having a edge around the respective housing opening. The second housing opening is closed by the edge of the cover plate on the edge of the second housing opening. The housing further includes first and second exposed struts. The first exposed strut is positioned between the first and the second housing openings and the second exposed strut is positioned between the second and the third housing openings, and a first side of an edge of the cover plate is fastened to the first exposed strut and a second side of the edge of the cover plate is fasted to the second exposed strut.

Abstract: A heat exchanger and a method of manufacturing a heat exchanger are described and shown. In some embodiments, the heat exchanger has a brazed core with flat metal tubes and flat metal tube ends received in corresponding openings defined in a collecting tank, and has a plurality of adhesive connections each with an annular space around a flat tube end and defined at least in part by the collecting tank, an addition-crosslinking silicone adhesive located within the annular space, and a mounting plate at least partially closing each annular space.