Fluid filter for treating the fluid, a container comprising the same and air release device

A fluid filter for treating fluid in a fluid container, comprising:

• a filter media for filtering the fluid, and
• a filter housing having a fluid impermeable plate to carry the filter media, wherein one or more fluid outlets are formed through the fluid impermeable plate to allow the fluid to flow out of the filter media, said one or more fluid outlets are arranged at a position deviated from one or more fluid inlets in a height direction of the filter media, through the fluid inlets the fluid enters into an interior of the filter media, so that a flow path along which the fluid flows in the filter media is extended to provide an extended fluid residence time,
• wherein the filter housing is configured to comprise:
• an open bottom,
• an upper rim,
• a top cover placed over the upper rim and having a plurality of fluid inlets formed therethrough, and
• the fluid impermeable plate disposed within the filter housing to define a gap between a side wall of the filter housing and the fluid impermeable plate, wherein the fluid flows into the plurality of fluid inlets and through the gap,
• wherein the filter housing further comprises a deflector plate provided between the top cover and the fluid impermeable plate and having a central aperture,
• wherein the filter media comprises a first filter material layer disposed between the top cover and the deflector plate, and a second filter material layer disposed between the deflector plate and the fluid impermeable plate, and
• wherein the fluid flowing from the fluid inlets of the top cover is guided to flow into the first filter material layer and down through the central aperture of the deflector plate into a center of the second filter material layer, such that the fluid is deflected towards the side wall of the filter housing to reach the gap defined by the fluid impermeable plate and the side wall of the filter housing.

A fluid filter for treating fluid in a fluid container, comprising:

• a filter media for filtering the fluid, and
• a filter housing having a fluid impermeable plate to carry the filter media, wherein one or more fluid outlets are formed through the fluid impermeable plate to allow the fluid to flow out of the filter media, said one or more fluid outlets are arranged at a position deviated from one or more fluid inlets in a height direction of the filter media, through the fluid inlets the fluid enters into an interior of the filter media, so that a flow path along which the fluid flows in the filter media is extended to provide an extended fluid residence time,
• wherein the filter media comprises one or more layers of filter materials of same type or different types,
• wherein the filter media is configured to have a multi-layered structure comprising a first filter material layer, a second filter material layer and a third filter material layer in a direction of fluid flow, wherein the first filter material layer comprises nylon or a filterable non-woven fabric, the second filter material layer comprises activated carbon, or ion exchange resin or a combination thereof, and the third filter material layer comprises a nanofiber layer.