An oil and air separator includes a lower housing defining in part a chamber within which oil may collect; an upper housing including a lower end threadingly engaged to an upper end of the lower housing; and a filter assembly threadingly engaged to the upper housing; wherein a lower portion of the filter assembly is disposed within the chamber when the filter assembly is threadingly engaged to the upper housing and the upper housing is threadingly engaged to the lower housing; wherein the filter assembly includes a filter block including a plurality of parallel lumens extending through the block; and wherein a continuous fluid pathway exists through the oil and air separator, the continuous fluid pathway extending from a fluid inlet port disposed in the upper housing, downward through a first passageway about the filter assembly, into the chamber, through a lower end of the filter assembly, upward through the plurality of parallel lumens extending through the filter block, through an upper end of the filter assembly, and through a second passageway leading to a fluid outlet port disposed in the upper housing.

A filter device for the separation of impurities from a gas, including a filter housing having a lid and a pot; a filter element installed in the pot; a top cap has an inlet duct for receiving gas to be purified, the inlet duct connects to the inlet of the lid; a positioning device configured to position the top cap in relation to the lid when mounting the pot on the lid, and on the other hand with pressure device configured to press the entrance of the inlet duct against the inlet of the lid after mounting the pot on the lid, whereby the positioning device and the pressure device are designed in such a way that the positioning device come into action earlier than the pressure device during the mounting of the pot on the lid.

The invention provides a membrane filter assembly for analytical sample systems, and a sample system block assembly having a built-in membrane filter assembly. The filter assembly has a housing having recessed inner face having non-uniform depth, and a cover member having a plurality of concentric grooves and a radially oriented shallow groove crossing the concentric grooves, wherein the grooves each have wider top than the bottom.

A switchable two-stage coalescence separation system, including a coalescer housing, a plurality of two-stage filter elements, and a particle detector. A lower portion and an upper portion of each of the two-stage filter elements are located in a lower chamber and an upper chamber of the coalescer housing, respectively. Two gas inlet branch pipes are communicated with the lower chamber and the upper chamber, respectively and are connected to a gas inlet main pipe through a first multi-way valve. The particle detector is disposed on the gas inlet main pipe. Two outlet branch pipes are communicated with the lower chamber and the upper chamber, respectively and are connected to a gas outlet main pipe through a second multi-way valve.

A gas-liquid separation device includes a housing assembly, a separation assembly, a bottom end plate, an exhaust pipe, and a seal. A separation chamber is defined in the housing assembly. A bottom of the housing assembly has a through-opening. The separation assembly performs gas-liquid separation on a gas-liquid mixture. The bottom end plate is located at a bottom of the separation assembly. A liquid reservoir is defined by the bottom end plate and receives a liquid separated by the separation assembly. The exhaust pipe has an exhaust channel and a liquid discharge channel. The exhaust pipe passes through the through-opening to allow a gas separated by the separation assembly to flow through the exhaust channel. A flow diversion cavity is defined between the exhaust pipe and the bottom end plate, and is in communication with an outlet of the liquid reservoir and an inlet of the liquid discharge channel.

A filter system for a machine system includes a filter holder assembly having a filter holder, an inner filter connector, and an outer filter connector. The filter holder includes peripheral surfaces each configured with at least one thread section and at least one slot section. The filter system also includes an inner filter attached to the inner filter connector and an outer filter attached to the outer filter connector. Each of the inner filter connector and the outer filter connector includes a peripheral surface configured with at least one thread section and at least one slot section arranged in a key-fit pattern relative to one of the peripheral surfaces of the filter holder. In an example application the concepts may be applied in an intake air system for an engine in an off-highway machine.

The present invention relates to a microfiltration container (2), comprising a base (1) for a microfiltration container (2), said container being adapted to contain at least one microfilter (3) and create fluid passages which force a fluid, passing from a fluid inlet (4) to a fluid outlet (5), to pass through said microfilter (3); wherein said base (1) is a monolithic body, i.e., made in a single piece; wherein a microfilter seat (6) is obtained in said base (1) for accommodating and securing said at least one microfilter (3); wherein at least a first valve half-chamber (7) is obtained in said base (1), adapted to accommodate a first movable valve element (8) adapted to move from a valve opening position to a valve closing position; wherein said at least a first valve half-chamber (7) comprises at least a first abutment surface (9) for sealing said movable valve element (8); wherein said microfiltration container (2) comprises a container bell (28); wherein said container bell (28) comprises a cylindrical bell body (42) in which a first lower end thereof is sealingly connectable to said base (1) and in which an upper opposite end thereof is closed by a bell cap (43).

Modular air filter assemblies having a configurable inlet, a configurable outlet, and a configurable mounting assembly are described herein. The modular filter assembly includes a tube extending along a central axis between a first end and a second end. The tube defines a curved surface. The modular filter assembly further includes an inlet extending radially outward of the curved surface relative to the central axis. The modular filter assembly includes two or more brackets. Each of the two or more brackets are configured to attach to a curved surface of the tube at a plurality of radial orientations relative to the central axis.

A filter system for a machine system includes a filter holder assembly having a filter holder, an inner filter connector, and an outer filter connector. The filter holder includes peripheral surfaces each configured with at least one thread section and at least one slot section. The filter system also includes an inner filter attached to the inner filter connector and an outer filter attached to the outer filter connector. Each of the inner filter connector and the outer filter connector includes a peripheral surface configured with at least one thread section and at least one slot section arranged in a key-fit pattern relative to one of the peripheral surfaces of the filter holder. In an example application the concepts may be applied in an intake air system for an engine in an off-highway machine.

Various environments exhibit undesirable air conditions, as may relate to particulates, odors, gas, vapors and/or airborne pathogens. For instance, public spaces such as hotel rooms, hospital rooms, apartments, assisted living homes and others may be subjected to such conditions. Existing air movement equipment, which may include heating, ventilating and air conditioning (HVAC) type equipment, may provide inadequate filtering capabilities. Certain applications involve filtering air provided by a room or area-specific heating, ventilating and/or air conditioning system. As a particular example, hotel and motel rooms are often heated, ventilated and cooled by a room-specific system. Such systems may utilize, for example, a ventilation mechanism that conveys air for heating or cooling the air in a fresh-air or recirculation mode, or simply for bringing fresh air in from outside the room. These room-specific systems often use filters in some manner. However, these filters are susceptible to damage and accumulation of dirt, bacteria and other undesirable contaminants. These and other matters have presented challenges to the use and implementation of filters for a variety of applications.