Device for exchanging thermal energy with ambient air and heat pump with a device of this type

A device for exchanging thermal energy with ambient air environment, the device comprising:

• a heat exchanger through which an air flow flows;
• at least one axial fan arranged downstream of the heat exchanger, the axial fan having an impeller rotatable about an axis of rotation with blades for conveying the air flow through the heat exchanger
• an outflow housing assigned to the axial fan, which receives the air flow conveyed by the axial fan on an outflow side of the axial fan, the outflow housing having a housing outlet opening through which the air flow can flow in a tangential direction with respect to a swirl movement imposed on the air flow under an effect of the rotating blades of the impeller of the axial fan;
• an air supply unit with at least one air inlet opening for supplying the air flow from the environment to the heat exchanger;
• and
• an air discharge unit with at least one air outlet opening for discharging the air flow out of the axial fan to the environment;
• wherein the at least one air inlet opening and the at least one air outlet opening are arranged on a same side of the device;
• wherein the air supply unit has at least one supply air channel feeding to the heat exchanger, which extends along an inlet surface of the heat exchanger and continuously tapers along the inlet surface;
• and
• wherein an outflow cross-section, defining an outlet speed of the air flow, of the at least one air outlet opening is smaller than an inflow cross-section, defining an inlet speed of the air flow, of the at least one air inlet opening.