Abstract: A heating device (1) which includes: an assembly (2-4) made of a heat-conducting material and has a heating resistor (5) and has a defined passage (7a, 7b) close to the resistor (5), for a flow of water to be heated. The assembly (2-4) includes a central body (2) having two main opposite surfaces (2a, 2b) to which respective closing shells (3, 4) are connected in a liquid-tight manner. Between each main surface (2a, 2b) and the associated shell (3, 4) there is defined a passage following a serpentine path (7a, 7b). The serpentine passages (7a, 7b) communicate with each other by a through-hole (10) provided between the main surfaces (2a, 2b) of the central body (2). The heating resistor (5) is provided in the central body (2), between the main surfaces or faces (2a, 2b) such that it is in a heat-exchanging relationship with both the serpentine passages (7a, 7b).

Abstract: A machine for preparing liquid products via cartridges comprises a delivery assembly that includes at least: one injector device, to introduce into a cartridge water and/or steam under pressure; an infusion chamber, facing the injector device and designed to receive the cartridge; an actuation system, designed to cause relative displacements between the injector device and the infusion chamber, between a spaced position and a closed position; a loading arrangement that includes an inlet duct and retention means, which can be switched between a retention condition, where the cartridge is kept in a position substantially coaxial to the infusion chamber and to the injector device, and a release condition, where the cartridge is free to fall towards an outlet passage of the delivery assembly.

Abstract: A heating device (1) which includes: an assembly (2-4) made of a heat-conducting material and has a heating resistor (5) and has a defined passage (7a, 7b) close to the resistor (5), for a flow of water to be heated. The assembly (2-4) includes a central body (2) having two main opposite surfaces (2a, 2b) to which respective closing shells (3, 4) are connected in a liquid-tight manner. Between each main surface (2a, 2b) and the associated shell (3, 4) there is defined a passage following a serpentine path (7a, 7b). The serpentine passages (7a, 7b) communicate with each other by a through-hole (10) provided between the main surfaces (2a, 2b) of the central body (2). The heating resistor (5) is provided in the central body (2), between the main surfaces or faces (2a, 2b) such that it is in a heat-exchanging relationship with both the serpentine passages (7a, 7b).

Abstract: A machine for preparing liquid products via cartridges (10) comprises a delivery assembly (30) that includes at least: —one injector device (34), to introduce into a cartridge (10) water and/or steam under pressure; —an infusion chamber (31), facing the injector device (34) and designed to receive the cartridge (10); —an actuation system (35), designed to cause relative displacements between the injector device (34) and the infusion chamber (31), between a spaced position and a close position; —a loading arrangement that includes an inlet duct (40) and retention means (42, 47), which can be switched between a retention condition, where the cartridge (10) is kept in a position substantially coaxial to the infusion chamber (31) and to the injector device (34), and a release condition, where the cartridge (10) is free to fall towards an outlet passage (41) of the delivery assembly (30).