The present invention provides a depth filter which contains fine particles and coarse particles, and which exhibits excellent filtration precision with respect to a high concentration fluid and/or a high viscosity fluid. This depth filter enables filtration for a long period of time, while maintaining a low filtration pressure.

The present invention is a depth filter which is obtained by winding a fiber sheet into a cylinder, and which comprises a pre-filtration layer and a microfiltration layer; the pre-filtration layer and the microfiltration layer are formed of a fiber sheet; the fiber sheet is composed of a nonwoven fabric or a web; the average fiber diameter of the fiber sheet continuously decreases from the pre-filtration layer toward the microfiltration layer; and the average weight per square meter of the fiber sheet continuously decreases from the pre-filtration layer toward the microfiltration layer.

A liquid filter and a liquid filtration apparatus are provided using the liquid filter, which enable uniform filtration over the entire range, without localizing a part where filtration occurs to the upper side above the middle. The liquid filter has a plurality of spacers fixed to a filter body. The filter body has a liquid inflow space, a plurality of diagonal fold parts individually formed outwards from corner parts of the liquid inflow space and having a length in the radial direction around the center of the liquid inflow space, and pocket parts having any one of the diagonal fold parts as one side, and individually having a triangular planar shape, and the spacers are fixed on the inner face of the filter paper, near the diagonal fold parts, and inside of the individual pocket parts.

A liquid filter and a liquid filtration apparatus are provided using the liquid filter, which enable uniform filtration over the entire range, without localizing a part where filtration occurs to the upper side above the middle. The liquid filter has a plurality of spacers fixed to a filter body. The filter body has a liquid inflow space, a plurality of diagonal fold parts individually formed outwards from corner parts of the liquid inflow space and having a length in the radial direction around the center of the liquid inflow space, and pocket parts having any one of the diagonal fold parts as one side, and individually having a triangular planar shape, and the spacers are fixed on the inner face of the filter paper, near the diagonal fold parts, and inside of the individual pocket parts.

A filter element sensor module having a housing, a sidewall of the housing including a recessed portion. The sensor module including a sensor assembly being provided within the housing about a sensor port interface being provided at one end of the housing. The sensor module also including processing circuitry being configured to receive signals from the sensor assembly and communication module, the communication module being configured to transmit one or more sensed parameters from the sensor assembly.

A filter device for filtering a fluid may include a flat filter element. The flat filer element may extend flat in a longitudinal direction and a transverse direction. The filter element may include at least one pleated filter medium through which a flow path of the fluid leads in a height direction. The at least one filter medium may include a top side and a bottom side facing away from the top side. At least one strainer may be arranged on the top side. The at least one strainer may extend flat parallel to the filter medium and may include a strainer material having multiple passages such that the flow path leads through the strainer in the height direction.

A filter device for filtering a fluid may include a flat filter element. The flat filer element may extend flat in a longitudinal direction and a transverse direction. The filter element may include at least one pleated filter medium through which a flow path of the fluid leads in a height direction. The at least one filter medium may include a top side and a bottom side facing away from the top side. At least one strainer may be arranged on the top side. The at least one strainer may extend flat parallel to the filter medium and may include a strainer material having multiple passages such that the flow path leads through the strainer in the height direction.

The present invention relates to a filtering panel (100) for a disk filter and a disk filter for water purification, comprising a metal filter cloth (16, 116) such as a stainless steel filter cloth, pre-tensioned in both warp and weft directions and fastened to a frame (10, 110) comprising a peripheral portion (11, 111), which is integral with an inner grillwork (12) and which divides the inner area of the peripheral portion (11, 111) into fields (15, 115). The frame (10, 110) comprises a plastic material reinforced with glass fibers or carbon fibres such as polypropylene loaded with fibreglass in an amount of at least 20 weight percent. Each field of the grillwork (12, 112) has an area not exceeding 10% of the inner area of the peripheral portion (11, 111). The pre-tensioning of the filter cloth (16, 116) in both directions is from at least 20% of the yield stress of the cloth (16, 116). Further the present invention relates to a disk filter comprising said filtering panels (100) and method of making said filtering panel (100).

The present invention relates to a filtering panel (100) for a disk filter and a disk filter for water purification, comprising a metal filter cloth (16, 116) such as a stainless steel filter cloth, pre-tensioned in both warp and weft directions and fastened to a frame (10, 110) comprising a peripheral portion (11, 111), which is integral with an inner grillwork (12) and which divides the inner area of the peripheral portion (11, 111) into fields (15, 115). The frame (10, 110) comprises a plastic material reinforced with glass fibers or carbon fibres such as polypropylene loaded with fibreglass in an amount of at least 20 weight percent. Each field of the grillwork (12, 112) has an area not exceeding 10% of the inner area of the peripheral portion (11, 111). The pre-tensioning of the filter cloth (16, 116) in both directions is from at least 20% of the yield stress of the cloth (16, 116). Further the present invention relates to a disk filter comprising said filtering panels (100) and method of making said filtering panel (100).

Flow control elements (FCEs) and fluid apparatus including the same are described. In embodiments the flow control elements (FCE) include a body that includes a front side, a back side, a left side, and a right side. The body further includes a base region, an upper region, and an intermediate region between the base region and the upper region. The FCE is configured to move in response to a fluid flow (or, more specifically, a pressure differential across the FCE) to regulate a flow of fluid past the FCE. In embodiments the FCE is included in a fluid apparatus for a vehicle, such as but not limited to a suction filter for a vehicle transmission.

Flow control elements (FCEs) and fluid apparatus including the same are described. In embodiments the flow control elements (FCE) include a body that includes a front side, a back side, a left side, and a right side. The body further includes a base region, an upper region, and an intermediate region between the base region and the upper region. The FCE is configured to move in response to a fluid flow (or, more specifically, a pressure differential across the FCE) to regulate a flow of fluid past the FCE. In embodiments the FCE is included in a fluid apparatus for a vehicle, such as but not limited to a suction filter for a vehicle transmission.