초록 ▼

An espresso coffee machine has a vertically movable snout that supplies hot water under pressure of a pump (13), to coffee (8) held in a filter (7) on a stationary support (9). The snout (10) which penetrates inside the filter (7), is mounted on the first part (22) of a hydraulic jack (21) actuated

An espresso coffee machine has a vertically movable snout that supplies hot water under pressure of a pump (13), to coffee (8) held in a filter (7) on a stationary support (9). The snout (10) which penetrates inside the filter (7), is mounted on the first part (22) of a hydraulic jack (21) actuated by the pressurized water supplied by the pump (13). The second part (88) of the jack is adapted to be moved against the action of an antagonistic spring (98) in order to permit the optimum deployment of the jack (21) when the snout (10) is in contact with the ground coffee (8) in the filter (7). This construction is useful for limiting the mechanical stresses on the component parts of the jack, and the pressure exerted by the snout on the ground coffee.

대표청구항 ▼

An espresso coffee machine (1), comprising a boiler (11) for heating pressurized water supplied by a pump (13) and intended to be injected into ground coffee (8) contained in filter means (7) which are placed on a support (9), and a snout (10) adapted to penetrate, during each operating cycle of the

An espresso coffee machine (1), comprising a boiler (11) for heating pressurized water supplied by a pump (13) and intended to be injected into ground coffee (8) contained in filter means (7) which are placed on a support (9), and a snout (10) adapted to penetrate, during each operating cycle of the machine (1), inside the filter means (7) said snout (10) begin mounted in a sliding manner relative to the chassis (23) of the machine (1) by means of at least one hydraulic control jack (21) carried by the machine and actuated by water supplied by said pump (13), the machine (1) also comprising means forming a flap valve (17) preventing the passage of the water from the boiler (11) toward the filter means (7) while the pressure of the water downstream of the pump (13) is below a predetermined minimum value, the snout (10) being carried by a first part (20) of said jack (21) which is movable relative to a second part (22, 82) of said jack (21) which is connected to the chassis (23) of the machine (1), wherein the support (9) of the filter means (7) is stationary, wherein the second part (22, 82) of the jack (21) is mounted so as to be able, through the action of pressurized water supplied by the pump (13), to be moved relative to the chassis (23) of the machine (1) against the action of means forming an antagonistic spring (80, 98) when the first part (20) is immobilized because the snout (10) s in contact with the ground coffee (8), in order to permit, before the opening of the means forming a flap valve (17), the optimum deployment of the jack (21), this optimum deployment begin limited by halting means (21, 87) so as to limit the force of compression of the ground coffee (8) by the snout (10).