Oil filter with spiral spoiler

By introducing a spiral baffle and bypass valve structure into the oil filter, the problem of filter element clogging caused by uneven oil flow is solved, achieving more efficient filtration and extending service life.

CN121452048APending Publication Date: 2026-02-03ZHONGBEI UNIV
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Patent Information

Application Number
CN202511771488.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-28
Publication Date
2026-02-03

AI Technical Summary

Technical Problem

In existing oil filters, the radial flow of oil from the outer wall to the inner wall of the filter element lacks effective guidance and disturbance, causing impurity particles to accumulate at a certain location, quickly clogging the filter element, failing to fully utilize the filter element's dust-holding capacity, and shortening its service life.

Method used

A spiral baffle is added inside the filter to improve oil flow through the flow guiding structure, prevent impurities from accumulating in a certain position, and activate the bypass valve under high oil pressure to allow the oil to pass through quickly, reduce the oil pressure, and rotate the baffle to agitate the oil to flush the dirt on the filter element.

Benefits of technology

It improves the filtration capacity and service life of the filter element, avoids filter element clogging, balances the use of the filter element, and extends the durability of the entire device.

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Abstract

The invention discloses an engine oil filter with a spiral spoiler. The engine oil filter comprises a bottom shell, an outer cover is fixedly connected to the bottom shell, a liquid inlet and a liquid outlet are formed in the bottom shell, a check valve is arranged on the liquid inlet, a connecting cylinder is fixedly connected into the liquid outlet, a filter element structure is fixedly connected to the connecting cylinder, and a bypass valve is arranged on the filter element structure; the flow guide assembly comprises a first spiral spoiler, the first spiral spoiler is located between the filter element structure and the outer cover, the first spiral spoiler is rotationally connected to the annular base, the bypass valve is fixedly connected with the annular base through a connecting mechanism, a supporting mechanism is fixedly connected into the outer cover, and a stop mechanism is arranged between the supporting mechanism and the annular base. Impurities of engine oil can be prevented from being gathered at a certain position, the use of a filtering part is more balanced, the durability of the device is improved, meanwhile, oil liquid can flow along the spoiler during operation, and large particles generate centrifugal force, so that the oil liquid is thrown to the wall surface and flows to the bottom along the spoiler, and the blockage degree of the filter element is reduced.
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