Heat exchanger

A heat exchanger, comprising:

• at least one fluid inlet;
• at least two fluid outlets;
• and
• an arrangement of fluid connections between inlet, collecting, deflecting and/or outlet chambers, the fluid connections being subdivided into various regions, a first region of fluid connections being arranged between at least one inlet and one first outlet, and a second region of fluid connections being arranged between the first outlet and a second outlet;
• wherein individual regions of fluid connections are connected to other regions of fluid connections and/or to an inlet and/or an outlet by inlet, collecting, deflecting and/or outlet chambers arranged in side boxes which are arranged laterally with respect to the fluid connections, and
• wherein the side boxes are subdivided into various chambers by l-shaped, z-shaped, c-shaped and/or t-shaped walls.