A vacuum cleaner, includes a dirty air inlet, a clean air outlet and an air channel arranged between the dirty air inlet and the clean air outlet. A vacuum generator is arranged inside the air channel. A first filter is arranged in the upper reach of the vacuum generator. A second filter is arranged in the upper reach of the first filter. The vacuum cleaner further comprises a state sensor. When in a second state, the first filter and the second filter are not combined, and the state sensor is not triggered. Missing mounting prevention detection of a main filter and a pre-filter can be realised at the same time by means of a micro-control switch, thereby saving on cost.

A filter for compressed air systems is provided. The filter includes a filter housing with a filter therein between an air inlet and an air outlet. Compressed air flowing between the air inlet and the air outlet passes through the filter housing and the filter element. A base is removably fastened to the filter housing which may be separated from the filter housing to allow the filter element to be removed and replaced.

A switchable two-stage coalescence separation system, including a coalescer housing (1), a plurality of two-stage filter elements (2), and a particle detector (5). A lower portion and an upper portion of each of the two-stage filter elements (2) are located in a lower chamber (101) and an upper chamber (102) of the coalescer housing (1), respectively. Two gas inlet branch pipes are communicated with the lower chamber (101) and the upper chamber (102), respectively and are connected to a gas inlet main pipe (8) through a first multi-way valve (6). The particle detector (5) is disposed on the gas inlet main pipe (8). Two outlet branch pipes are communicated with the lower chamber (101) and the upper chamber (102), respectively and are connected to a gas outlet main pipe 13 through a second multi-way valve (7).

A filter frame provided in the present invention comprises a frame body including a plurality of frame strips which are combined together to form filter net disposing area, a filter net fixing member, an upper circumferential surface connecting member, a lower circumferential surface connecting member, and an adjacent member. The upper circumferential surface connecting member and the lower circumferential surface connecting member are respectively disposed along the upper circumferential surfaces and the lower circumferential surfaces of the frame strips in such a manner that the filter frame is connected to a second filter frame and/or a third filter frame along the normal direction of the filter net disposing area. The adjacent member is disposed along the outer circumferential surface of the frame strip to form an adjacent channel extending along the frame strip in such a manner that the filter frame is adjacently connected to a fourth filter frame.

The present disclosure is directed to a new quick-connect, bayonet-type coupling arrangement for use with connecting a filter cartridge or element to a fluid-consuming machine. Advantageously, the features of the coupling arrangement can be provided while simultaneously maintaining backward compatibility with screw-thread based systems by modifying the screw thread on the end cap so as to include judicially arranged non-interfering segments. Accordingly, the disclosed fluid filter elements can not only be installed on systems according to the present disclosure but also on prior-art systems presenting a thread-based connector.

The technology disclosed herein relates to a tank vent having a housing and a pleated, vapor-permeable microporous membrane. The housing defines a first vapor passageway configured for direct communication with a tank interior and a second vapor passageway configured for direct communication with the atmosphere. The housing also defines a tank mounting surface is mountable to a tank housing and a media mounting surface. The microporous membrane is sealed to the media mounting surface and defines a tubular structure such that the first vapor passageway and the second vapor passageway are in communication through the microporous membrane. Other embodiments including methods are also disclosed.

A motor-vehicle component, in particular a particulate-filter unit for diesel engines, includes a main body provided with attachments for connection to the structure of the motor vehicle and an additional body connected to said main body and in turn connected to the structure of the motor vehicle by a connection device that is able to compensate for dimensional variations due to manufacturing tolerances.

A medical breathing gas filter housing includes a first housing body including a first port, and a second housing body including a second port. The gas filter housing is configurable between a closed state and an open state. In the closed state, the first housing body is snap fit to the second housing body such that first and second interior sides of the first and second housing bodies, respectively, define a cavity, the cavity sized to receive a replaceable gas filter media. In the open state, the first housing body is separated from the second housing body to provide access to the cavity.

The present invention provides a filtering system including an impermeable extension for a filtering element.

A fluid filter for a motor vehicle includes a filter housing and a filter cartridge which is disposable in the filter housing. The filter housing has a housing pot and a covering element where the filter cartridge is connectable to the housing pot by rotating around a longitudinal axis of the filter cartridge. A holding element having a web is disposed on an end plate of the filter cartridge where the web protrudes from a wall of the holding element and where the wall is formed to be spiral shaped radially to the longitudinal axis. The web of the holding element is engageable behind a holding web in a mounting position of the filter cartridge where the holding web projects at a constant distance from a wall, formed to be spiral shaped radially to the longitudinal axis, of a counter bearing disposed on the housing pot.