A heat exchanger comprising a plurality of heat exchange plaques and plates stacked one by one to define coolant passage channels and hot passage channels to be cooled and configured to be crossed by a coolant fluid and by a hot fluid to be cooled. Each plaque is modular and comprises a first lateral plate configured to be positioned at the point where the hot fluid inlet opening and the coolant fluid outlet opening are located, and a second lateral plate configured to be positioned at the point where the coolant fluid inlet opening and the hot fluid inlet opening. Moreover, the lateral plates are connected to each other by respective connecting bars.

There is provided a heat exchanger comprising: a housing comprising: an inlet at a proximal end for receiving a first fluid; and an outlet, downstream of the inlet at the distal end of the housing, through which the fluid is configured to exit the housing; and a plurality of heat exchanger cores within the housing, wherein the plurality of heat exchanger cores meet at a junction and diverge from each other towards one of the inlet or the outlet of the housing; wherein the plurality of heat exchanger cores comprises a plate fin arrangement; and, wherein the plurality of heat exchanger cores comprise one or more first flow paths through which the first fluid can pass through the heat exchanger cores, in use.

A heat exchange spacer is for assembly with a heat exchange core. The heat exchange spacer has a unitary body including a first elongate portion and a second elongate portion. The first elongate portion and the second elongate portion define an angle therebetween.

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.

Cold plates through which refrigerant flows define a slot between them that can receive a cassette through which sterile working fluid with a relatively low flow rate flows from an intravascular heat exchange catheter. The working fluid from the catheter is heated or cooled by heat exchange with the cold plates through the walls of the cassette to maintain the sterility of the working fluid. On the other hand, high flow rate working fluid chambers surround the cold plates and non-sterile working fluid from an external heat exchange pad flows through the high flow rate working fluid chambers to exchange heat through direct contact with the cold plates.

A cooling circuit includes a first coolant passage in which a coolant flows, a second coolant passage in which the coolant flows, a thermostat, and an oil cooler configured to heat or cool oil. The thermostat interrupts a flow of the coolant flowing through the first coolant passage when a temperature of the coolant flowing into the thermostat is lower than a predetermined temperature, and allows the coolant to flow through the first coolant passage when the temperature of the coolant is at or above a predetermined temperature. The oil cooler includes a first coolant inflow port, a first coolant outflow port, a second coolant inflow port, and a second coolant outflow port. The oil cooler heats or cools the oil by heat exchange between the coolant flowing from the first coolant inflow port or/and the second coolant inflow port and the oil.

A reactor includes: a heat exchange body including a heat medium channel through which the heat medium flows and a reaction channel through which the reaction fluid flows; at least one structured catalyst supporting a catalyst for promoting the reaction of the reaction fluid and removably installed in the reaction channel; and a holding member including an extending part extending in a direction conforming to an extending direction of the reaction channel and capable of engaging with the at least one structured catalyst, and regulating parts provided in the extending part to regulate a movement of the at least one structured catalyst in the extending direction of the extending part, wherein the holding member is inserted and removed with respect to the reaction channel while holding the structured catalyst.

Various embodiments include heat exchangers and methods of making heat exchangers from a series of stacked plates each made of two foil sheets bonded together in bonding locations forming fluid flow passages between the foil sheets in regions where the foil sheets are not bonded. An inlet port and an outlet port located at opposite ends of the planar extent of the two foil sheets extend through the foil sheets perpendicular to the planar extent of the foil sheets. The inlet and outlet ports provide access for a first fluid to flow into or out of the internal plate passages formed between the two foil sheets. Interstitial channels are formed between the series of plates and configured to allow the flow of a second fluid between the series of plates, allowing heat to be transferred between the two fluids while isolating the two fluids from one another.

A heat exchanger is constructed from a plurality of plate pairs stacked to form air flow passages between adjacent ones of the plurality of plate pairs and cooling fluid flow paths within each of the plurality of plate pairs. The cooling fluid flow paths have a first portion along one longitudinal edge of each plate pair, a second portion along an opposing longitudinal edge each plate pair, a third portion extending through the heat exchange section between the first and second portions, and a fourth portion extending between the first and second portions along one lateral edge of each plate pair and bypassing the third portion. Flow barriers are arranged within each plate pair to at least partially define the third and fourth portions.

Method for brazing or refilling comprising the following steps: providing at least one part (51) containing a metal or metal alloy, for example stainless steel, the part (51) having at least one face (59) defining a plurality of interstices (61) comprising at least two opposite edges separated on the face (59) by a maximum distance of not more than 250 micrometres; obtaining a coating (R) in contact with said face and comprising at least a first layer (85), located at least partially in the interstices, and a second layer (87) adjacent to the first layer, the first layer (85) comprising a first powder (A) containing a metal or metal alloy, the second layer comprising a mixture of a second powder (B) and a third powder (C), the second powder and the third powder being, respectively, different alloys suitable for brazing or refilling the part, and the solidus temperature TSC of the third powder being lower than the solidus temperature TSB of the second powder; heating the part and the coating at a heating temperature strictly lower than the solidus temperature TSA of the first powder, lower than the solidus temperature TSB, and strictly higher than the solidus temperature TSC, and at least partially melting the coating; and cooling the part and the coating to obtain a solidified residue attached to the part.