A heat exchanger includes a core defining a first passageway and a second passageway. The core includes a plurality of unit cells coupled together. Each unit cell of the plurality of unit cells includes a first wall and a second wall. The second wall is spaced from the first wall. The first wall at least partially defines a first passageway portion and a second passageway portion. The second wall at least partially defines the second passageway portion. The second wall extends about the first wall such that the first passageway portion is nested within the second passageway portion.

A heat exchanger assembly comprises a heat exchanger for heat exchange between at least a first heat exchange fluid and a second heat exchange fluid. The heat exchanger comprises at least one heat transfer element delimiting a first fluid path from a second fluid path, and a through connection for the first heat exchange fluid arranged at a first side portion of an outer structure of the heat exchanger. The assembly comprises a pressure pulse damping apparatus comprising an elastic element, and a first conduit leading to the elastic element. The first conduit comprises a first opening connected to the through connection of the heat exchanger such that the first conduit is fluidly connected with the first fluid path. The elastic element fluidly communicates with the first fluid path only via the first opening. There is further disclosed use of a pressure pulse damping apparatus comprising an elastic element.

A heat exchanger assembly comprises a heat exchanger for heat exchange between at least a first heat exchange fluid and a second heat exchange fluid. The heat exchanger comprises at least one heat transfer element delimiting a first fluid path from a second fluid path, and a through connection for the first heat exchange fluid arranged at a first side portion of an outer structure of the heat exchanger. The assembly comprises a pressure pulse damping apparatus comprising an elastic element, and a first conduit leading to the elastic element. The first conduit comprises a first opening connected to the through connection of the heat exchanger such that the first conduit is fluidly connected with the first fluid path. The elastic element fluidly communicates with the first fluid path only via the first opening. There is further disclosed use of a pressure pulse damping apparatus comprising an elastic element.

Disclosed is a cleaning system (1) for cleaning the plate channels (2) in a plate heat exchanger (3) during normal use of the heat exchanger (3), wherein the heat exchanger (3) comprises an inflow channel (4) through which a fluid enters the heat exchanger (3) and an outflow channel (5) through which the fluid exits the heat exchanger (3). A stack (6) of heat exchanger plates (7) is arranged between the inflow channel (4) and the outflow channel (5) so that the heat exchanger plates (7) form plate channels (2) between the inflow channel (4) and the outflow channel (5) through which the fluid may pass. The cleaning system (1) comprises # a bypass conduit (8) arranged to establish a bypass flow of the fluid between the inflow channel (4) and the outflow channel (5) bypassing the stack (6) of heat exchanger plates (7), # a cleaning head (9) comprising a cleaning aperture (10) connected to the bypass conduit (8), wherein the cleaning aperture (10) is arranged to face the stack (6) of heat exchanger plates (7) during normal use of the cleaning head (9) in the heat exchanger (3),displacement means (11) arranged to displace the cleaning head (9) linearly in a displacement direction in the inflow channel (4) or the outflow channel (5), and pressure altering means (12) arranged to alter the pressure in the bypass conduit (8), wherein the projected area (13) of the cleaning head (9) in the displacement direction is smaller than the cross-sectional area in the displacement direction of the inflow channel (4) or the outflow channel (5) in which the cleaning head (9) is placed to allow the fluid to pass the cleaning head (9) in the inflow channel (4) or the outflow channel (5). Furthermore, a plate heat exchanger (3) and a method for cleaning the plate channels (2) in a plate heat exchanger (3) is disclosed.

A plate-type heat exchanger, in particular for motor vehicles, is described which includes plate pairs. In one example, a plate pair includes a first plate and a second plate that form a first flow path and a second flow path between the plates. In this configuration, the first and the second plate are associated with a first attachment plate and a second attachment plate, respectively. A third flow path is formed between the first plate and the second attachment plate and the first flow path is formed between the second plate and the first attachment plate. Alternatively, the third flow path is formed between the first plate and the first attachment plate and the first flow path is formed between the second plate and the second attachment plate. A spatial region for a fourth flow path may also be formed between adjacent plate pairs.

A plate (3) having a pair of first communication holes (34) and a pair of second communication holes (35) and a plate (4) having a pair of first communication holes (44) and a pair of second communication holes (45) are alternately laminated to alternately form, between the plates (3) and (4) adjacent to each other, a first coolant flow path (81) and a second coolant flow path (82); a first spacer (5) is interposed around each of the first communication holes (34) and (44) within the first coolant flow path (81); and a second spacer (6) is interposed within the second coolant flow path (82) and at a position corresponding to a periphery of each of the first communication holes (34) and (44).

A vehicle power module assembly including an array of frames each defining a passthrough and step is provided. The frames may be stacked such that the passthroughs are in at least partial registration with one another and the steps align to define an inlet manifold having first and second chambers extending a length of the array. The chambers may be partially open to one another such that the steps influence a momentum of coolant traveling from the first to the second chamber. A pair of endplates may be disposed on either end of the array and configured to retain the frames therebetween. Each of the frames may further define a pair of channels and may be arranged with one another to define a power stage cavity therebetween. A power stage may be disposed within the power stage cavity.

A cooling system, comprising: a heat exchange module, wherein the heat exchange module at least comprises a first channel and a second channel that are independent from each other; a first cooling circuit, wherein the first cooling circuit is connected to the first channel of the heat exchange module; and a second cooling circuit, wherein the second cooling circuit is connected to the first channel of the heat exchange module, and a first coolant in the first cooling circuit and/or a second coolant in the second cooling circuit can flow through the first channel of the heat exchange module so as to be used for performing heat exchange with a third coolant that flows through the second channel of the heat exchange module. According to the cooling system, the reliability of the cooling system can be improved by means of the design of dual cooling circuits.

A heat exchanger has a plurality of plates having opposed surfaces and side walls extending beyond the opposed surfaces to a height (h); and a fin pack extending from one opposed surface toward an opposed surface of an adjacent plate, and having a fin height (f), wherein the fin height (f) is equal to or less than the height (h). The plates can be stacked to form a heat exchanger assembly with a gap between adjacent fin packs.

The present invention relates to a plate-and-shell heat exchanger (100) having a stack of plate pairs (50, 60) positioned in a shell (20), where the stack of plate pairs (50, 60) includes a plurality of plate pairs of a first type (50) and a plurality of plate pairs of a second type (60). Each plate pair (50, 60) has two heat transfer plates (10) being connected to each other and forming a cavity (11) there between, and forming an inlet opening (13a, 13b) and an outlet opening (13′a, 13′b). First inner flow paths (12a) are formed through the first inlet openings (13a), the cavities (11) of the plate pairs of the first type (50) and the first outlets (13′a). Second inner flow paths (12b) are formed through the second inlet openings (13b), the cavities (11) of the plate pairs of the second type (60) and the second outlets (13′b). A third outer flow path (22) is defined within the shell and between plate pairs of the first type (50) and plate pairs of the second type (60).