Solenoid bleed valve for a device for the disposal of vapours

A solenoid purge valve for a vapor removal device, for a device for recovering gasoline vapor present in a fuel tank for a controlled-ignition engine, said valve comprising:

• a case provided with a vapor inlet orifice and with a vapor outlet orifice;
• an electromagnet coil mounted in said case;
• a metal armature of magnetic material situated facing one end of a magnetic core of said electromagnet coil and movable axially between a first position under drive from a return spring in the absence of electromagnet excitation and a second position under the action of the excited electromagnet, against the return spring;
• a valve seat which is mounted in leaktight relationship with said outlet orifice of the case and which is secured to a tubular extension engaged coaxially in the outlet orifice provided in the case and having a diameter smaller than that of the outlet orifice, an O-ring being interposed radially between said tubular extension and side outlet orifice;
• and
• a closing valve member secured to said moving metal armature, the valve member resting against its seat or being moved away therefrom when the moving metal armature is respectively in its first position or in its second position;
• characterized in that the electromagnet coil comprises:
• a hub having two endplates;
• an electrical winding mounted coaxially around the hub;
• a magnetic core fixed coaxially inside the hub;
• and
• a magnetic circuit which surrounds said hub and winding and which is supported by a first endplate of the hub situated beside said seat;
• in that said first endplate of the hub has a peripheral support collar in the case said peripheral collar being connected to the hub by a plurality of spokes extending generally radially, and each spoke being, at least in part, thin relative to the collar and to the hub, whereby the thin spokes provide the coil with resilient suspension relative to the case and filter vibration between the electromagnet coil and the case;
• and in that the valve seat is supported by said first endplate of the hub, whereby the closing valve member and its seat are at least highly decoupled from the case, from the point of view of vibration.