Abstract: A heat exchange unit for heat pumps or air conditioners includes a box-like casing, a lower surface, an upper surface which is opposite the lower surface and which is spaced apart therefrom with respect to an axis of the casing, and a front surface which extends between the lower surface and the upper surface, the surfaces being defined on the casing. The heat exchange unit also includes a first opening and a second opening which are made on the casing, a channel which extends inside the casing between the first and second openings, a fan which is housed inside the casing, along the channel, and which is provided to move an air flow away from and towards the external environment with respect to the casing through the openings, and a heat exchanger which is placed in the channel, at least a portion of the fan and the heat exchanger being one below the other with respect to the axis.

Abstract: A heat exchange unit for heat pumps or air conditioners, comprising a box-like casing (1), a lower surface (2), an upper surface (3) which is opposite the lower surface (2) and which is spaced apart therefrom with respect to an axis (X) of the casing (1), and a front surface (4) which extends between the lower surface (2) and the upper surface (3), the surfaces (2, 3, 4) being defined on the casing (1).

Abstract: The kitchen extractor hood (110) is provided with means (38) for generating a first flow (A, B) of a gaseous mixture taken from the internal environment (51) in which the hood (110) is located and releasing it into the external environment (52). The hood (110) is also provided with means (28) for generating a second flow (C, D) of a gaseous mixture taken from the external environment (52) and/or from the internal environment (51) and releasing it into the internal environment (51), as well as with means (10) for recovering part of the thermal energy contained in the first flow (A, B) and transferring it to the second flow (C, D). The means (10) used to recover thermal energy comprise a recovery device (14) comprising in turn a heat exchanger of the heat pipe type (16), featuring an evaporation section (14E) dealing with the first flow (A, B) and a condensation section (14C) dealing with the second flow (C, D).