Elbi International S.p.a.

Luigi Aita

Paolo Da Pont

Luca Magnone

Franco Daudo

Three-way valve drivable by a pump, switchable between at least two switch positions wherein a first port is selectively in fluid communication with a second port or with a third port. The three-way valve comprises a movable support and a pair of obstructing members carried by the movable support, at least one of which is responsive to the pressure applied by the pump at the first port, at least one of the movable support and obstructing members being movable due to transitions between an off-state and an on-state of the circulation pump. The obstructing members are adapted to engage reciprocatingly the respective seats of the three-way valve. The obstructing members are capable of changing shape synchronously when the pump switches from the off-state to the on-state.

Three-way valve drivable by a pump

The heat exchanger () comprises a helical flow conduit () for a liquid, made with a pipe () of extruded thermally conductive material, provided with a pair of facing and mutually parallel fins (), which extend from a portion of the outer surface thereof. This pipe () is helically wound about a longitudinal axis (A-A) such as to form a sequence of adjacent turns () separated by interspaces () through which, during use, hot gases, in particular combustion fumes, flow. The fins () extend helically, towards the outside relative to the axis (A-A) of the helical conduit (), and have respective pluralities of through-openings () which interconnect the region () comprised between them and the interspaces () defined with respect to the adjacent turns (). Flow paths are thus defined through these fins (), outside the helical conduit (), for the hot gases which during use pass through the interspaces () between the turns of the helical conduit ().

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Gassino Torinese, Italy

Luigi Aita