Self-cleaning metering device
AssigneeSnecma Moteurs
InventorsMarion Michau, José Rodrigues, Alain Tiepel
Life of this patent
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Abstract
In a fluid metering device for metering a fluid from a supply source to means of use of this fluid comprising a metering valve able to slide in a sleeve over a travel C, this valve comprising an intake orifice (16) for admitting the fluid from the said supply source and an orifice (18) for ejecting this fluid to the means of use, there are provided means (20) for channelling the fluid intended to allow, during the movement of the metering valve in its sleeve, a sweeping of the fluid over all the contacting surfaces of the valve and of the sleeve. The means of channelling the fluid advantageously comprise a helical groove of width L and of pitch P.
Claims6
Fluid metering device for metering a fluid from a supply source to a user device, the fluid metering device comprising:
- a sleeve;
- a metering valve configured to slide in the sleeve over a length of travel, the valve comprising an intake orifice configured to admit the fluid from the supply source, and an ejection orifice configured to meter the fluid and eject the metered fluid to the user device, the ejection orifice including an ejection slot positionable outside of the sleeve;
- and
- a channelling device configured to permit a sweeping of the fluid over all surfaces of the sleeve that contact the valve during the sliding of the valve in the sleeve.
Dependencies are inferred from the claim text.