| 摘要 |
A fluid filter having a filter canister, a fluid inlet, a fluid outlet, filter media, and a relief valve assembly is described. The relief valve assembly comprises a bypass housing, a bypass spring, a valve plug, and a locator spring. The locator spring is joined to the bypass housing and is compressed between the bypass housing and a bypass end of the filter canister such that a trailing portion of the bypass housing forcibly engages the bypass end of the filter media and a seated end of the filter media forcibly engages an outlet end of the filter canister. |
| 主权项 |
1. A fluid filter comprising a filter canister, a fluid inlet, a fluid outlet, filter media, and a relief valve assembly, wherein:
the fluid inlet comprises a plurality of inlet orifices distributed peripherally about the fluid outlet; the filter media defines a seated end, a bypass end, an outer filtering zone, and an inner fluid passage extending from the seated end to the bypass end of the filter media; the filter media is disposed in a fluid path within the filter canister between the peripherally distributed inlet orifices and the fluid outlet of the fluid filter such that the fluid outlet is aligned with the inner fluid passage of the filter media; the relief valve assembly comprises a bypass housing, a bypass spring, a valve plug, and a locator spring; the bypass spring and the valve plug are mechanically coupled to the bypass housing of the relief valve assembly and are configured such that the valve plug moves to an open position when a bypass fluid pressure on the valve plug exceeds a bypass threshold of the bypass spring; the bypass housing of the relief valve assembly comprises a leading portion and a trailing portion; the leading portion of the bypass housing extends into the inner fluid passage of the filter media from the bypass end of the filter media; the trailing portion of the bypass housing is oversized relative to a cross sectional profile of the inner fluid passage of the filter media and does not extend into the inner fluid passage of the filter media; the filter canister comprises a bypass end and an outlet end; and the locator spring is joined to the bypass housing and is compressed between the bypass housing and the bypass end of the filter canister such that the trailing portion of the bypass housing forcibly engages the bypass end of the filter media and the seated end of the filter media forcibly engages the outlet end of the filter canister. |
