An oil filter assembly is disclosed for a machine, such as an internal combustion engine, that has an oil output port and an oil input port. A mounting plate may be fixed with an outer enclosure and may be adapted for securing to the machine. The mounting plate may be further adapted to conduct oil from the machine into a peripheral portion of the outer enclosure, and then returning oil from a central portion of the outer enclosure back to the machine. Oil may pass from the peripheral portion to the central portion through a primary filter having a first porosity. A pressure-actuated valve may be fixed fluidly between the peripheral portion and central portion of the outer enclosure. Oil may pass through the pressure-actuated valve only when an oil pressure differential between the peripheral portion and the central portion of the outer enclosure exceeds a predetermined threshold pressure. A secondary filter may have a second porosity greater than the first porosity, and may be fixed fluidly between the pressure-actuated valve and the central portion of the outer enclosure.

An oil filter assembly is disclosed for a machine, such as an internal combustion engine, that has an oil output port and an oil input port. A mounting plate may be fixed with an outer enclosure and may be adapted for securing to the machine. The mounting plate may be further adapted to conduct oil from the machine into a peripheral portion of the outer enclosure, and then returning oil from a central portion of the outer enclosure back to the machine. Oil may pass from the peripheral portion to the central portion through a primary filter having a first porosity. A pressure-actuated valve may be fixed fluidly between the peripheral portion and central portion of the outer enclosure. Oil may pass through the pressure-actuated valve only when an oil pressure differential between the peripheral portion and the central portion of the outer enclosure exceeds a predetermined threshold pressure. A secondary filter may have a second porosity greater than the first porosity, and may be fixed fluidly between the pressure-actuated valve and the central portion of the outer enclosure.

A device configured for cleaning bag filters with compressed air comprises a frame having a hollow interior defining a wall of the frame and openings formed through a thickness of the wall so that the hollow interior is in open communication with an environment external to the frame. A mounting member is configured to be releaseably or permanently attached to one end of the frame and is further configured to be releaseably or permanently attached to a member configured to pass air flow therethrough.

A device configured for cleaning bag filters with compressed air comprises a frame having a hollow interior defining a wall of the frame and openings formed through a thickness of the wall so that the hollow interior is in open communication with an environment external to the frame. A mounting member is configured to be releaseably or permanently attached to one end of the frame and is further configured to be releaseably or permanently attached to a member configured to pass air flow therethrough.

An apparatus for cleaning air filters utilizes a pressurized fluid flow, preferably air, to rotate a set of air spraying jets inside a hollow interior of a filter in order to remove particles from the filter. To ensure proper positioning of the jets in relation to the filter the present invention uses a set of plates with slots and pins, wherein the pins secure the apparatus on one end of the filter. The set of plates also at least partially blocks the flow of air out of the ends to more efficiently direct the flow of air from the jets to the filter. The jets then may be moved reciprocated along the length of the filter for cleaning purposes.

An apparatus for cleaning air filters utilizes a pressurized fluid flow, preferably air, to rotate a set of air spraying jets inside a hollow interior of a filter in order to remove particles from the filter. To ensure proper positioning of the jets in relation to the filter the present invention uses a set of plates with slots and pins, wherein the pins secure the apparatus on one end of the filter. The set of plates also at least partially blocks the flow of air out of the ends to more efficiently direct the flow of air from the jets to the filter. The jets then may be moved reciprocated along the length of the filter for cleaning purposes.

An ultrasonic wave washing unit may include a housing including a media inlet, a media outlet, and a bottom surface; a plurality of ultrasonic transducers disposed about and extending from the bottom surface; a support structure including a chair and sleeve, wherein the support structure is coaxially disposed within the housing within the plurality of ultrasonic transducers; wherein the chair is operable to hold an air filter and receive residue from the air filter when washed within the ultrasonic wave washing unit; and the sleeve is operable to engage with the air filter and secure the air filter within the chair.

An ultrasonic wave washing unit may include a housing including a media inlet, a media outlet, and a bottom surface; a plurality of ultrasonic transducers disposed about and extending from the bottom surface; a support structure including a chair and sleeve, wherein the support structure is coaxially disposed within the housing within the plurality of ultrasonic transducers; wherein the chair is operable to hold an air filter and receive residue from the air filter when washed within the ultrasonic wave washing unit; and the sleeve is operable to engage with the air filter and secure the air filter within the chair.

The present invention concerns an air filter cleaning device having a rotating stage on which an air filter to be cleaned is seated and rotated about its central axis; and an inner outlet head configured to extend through a central opening of the rotating stage and be vertically moveable between a lower position and an upper position at least parallel to the central axis of the air filter, said outlet head having at least one gas outlet for discharging pressurized air outwardly through at least one wall of the air filter for dislodging contaminants; an outer vacuum head located externally to the air filter for suctioning the contaminants dislodged from the air filter by the inner outlet head wherein the inner outlet head is further configured such that the lower position is located less than about 1,500 mm above a support surface for the cleaning device.

The present invention concerns an air filter cleaning device having a rotating stage on which an air filter to be cleaned is seated and rotated about its central axis; and an inner outlet head configured to extend through a central opening of the rotating stage and be vertically moveable between a lower position and an upper position at least parallel to the central axis of the air filter, said outlet head having at least one gas outlet for discharging pressurized air outwardly through at least one wall of the air filter for dislodging contaminants; an outer vacuum head located externally to the air filter for suctioning the contaminants dislodged from the air filter by the inner outlet head wherein the inner outlet head is further configured such that the lower position is located less than about 1,500 mm above a support surface for the cleaning device.