Multifunctional shutting device for lubrication filter
AssigneeTechspace Aero S.A.
InventorBernard Pierret
Life of this patent
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Abstract
A multifunctional shutting device for a lubrication filter includes a safety device with triple valve shutting. The safety device includes a first valve for closing the oil intake in the filter with a view to dismantle the filter, a second bypass valve that opens when the filter is blocked and a third valve that opens in the event of excess pressure in the hydraulic circuit. The multiple valve structure is particularly applicable to the lubrication system in an aircraft engine but can be used in other hydraulic circuits subject to similar issues.
Claims19
A multi-valve device (1), for connection to a filter body or removable filter body (2) in a hydraulic circuit, preferably a lubrication assembly, comprising an oilpan, said multi-valve device (1) comprising:
- a first valve (3) for closing the oil intake in the filter with a view to dismantle the filter;
- a second bypass valve (4) that opens when the filter is blocked;
- a third valve (5) that opens in the event of excess pressure in the hydraulic circuit;
- wherein the valves (3,4,5) can be moved along one single and common axis of alignment (20) in the multi-valve device (1), the latter being machined en bloc from an intermediate part that is distinct from the oilpan, said intermediate part being located in a single concentric housing machined in the oilpan so that a symmetry axis (20) of the filter body (2) is identical to the above-mentioned axis of alignment.
Dependencies are inferred from the claim text.