A vacuum cleaner including a suction inlet, a conduit in fluid communication with the suction inlet, a filter having a valve releasably connected to a filter inlet, the filter configured to collect debris drawn through the suction inlet. The vacuum cleaner further comprising a release mechanism moveable from a first position to a second position. In the first position, the filter is in fluid communication with the conduit to collect debris with the valve being open, and in the second position, the filter is disconnected from the conduit with the valve being closed. Movement of the release mechanism between the first and second positions closes the valve.

An oil separator for a compressor comprising a tank and a lid for the tank, which comprises, in an integral manner, a valve body defining an outlet duct of the separator, a head of a coalescence filter, a body of an anti-condensate valve, a body of a minimum pressure valve and the relative connection ducts.

A handheld vacuum cleaner including a suction inlet, a main body, a handle defined by a portion of the main body, a motor disposed within the main body operating a suction source, and a filter coupled to the main body. The filter is configured to separate debris from a flow of fluid drawn through the suction inlet. The filter includes a housing forming a first volume and a filter media forming a second inner volume. The filter media is coupled to the housing such that the first and second inner volumes together at least partially define a collection container configured to store debris separated by the filter media from the flow of fluid. The filter further includes an inlet opening that extends through the housing to provide fluid communication into the collection container such that the flow of fluid with the debris can flow into the collection container such that the flow of fluid with the debris can flow into the collection container and a relatively clean flow of fluid exits through the filter media.

A vacuum cleaner including a suction inlet, a conduit in fluid communication with the suction inlet, a filter having a valve releasably connected to a filter inlet, the filter configured to collect debris drawn through the suction inlet. The vacuum cleaner further comprising a release mechanism moveable from a first position to a second position. In the first position, the filter is in fluid communication with the conduit to collect debris with the valve being open, and in the second position, the filter is disconnected from the conduit with the valve being closed. Movement of the release mechanism between the first and second positions closes the valve.

An apparatus and method for removal of contaminants from vented vapors having a pressure indicator/stop assembly.

Implementations disclosed herein provide a compact downdraft table including a spark arrestor oriented below a work surface, a vertically oriented cylindrical filter cartridge located below the work surface, a fan assembly that draws air through the work surface, the spark arrestor, and the filter cartridge and exhausts filtered air out of the downdraft table, a purge assembly that discharges purged air to an interior of the filter cartridge to purge particulates collected on an exterior of the filter cartridge, wherein the spark arrestor, filter cartridge, fan assembly, and purge assembly are all contained within a main housing for the downdraft table.

Implementations disclosed herein provide a compact downdraft table system including a vertically oriented cylindrical filter cartridge located below a work surface in a main housing of the downdraft table, a purge assembly in the main housing vertically aligned with the filter cartridge that discharges purged air to an interior of the filter cartridge to purge particulates collected on an exterior of the filter cartridge, and a self-closing louvre in the main housing that permits air flow from the work surface, through the louvre, and through the filter assembly in a first direction, and prevents purged air flow from flowing through the louvre to the work surface in a second direction opposite the first direction.

An apparatus and methods for air filtration are disclosed. The apparatus includes a body and first and second replaceable filters. The body of the apparatus further contains an air-exchange assembly and a filter receiver attached to the air exchange assembly. The air-exchange assembly contains an exhaust tube with an open end and a closed end, two wings on opposite sides of the exhaust tube, and an intake check valve and an exhaust check valve inside the exhaust tube. The first replaceable filter surrounds the filter receiver; and the second replaceable filter is inside the filter receiver. Several apertures and the check valves are strategically disposed in the exhaust tube to achieve optimal air filtration and avoid contamination of a user's exhaust.

The oil mist separator separates oil from blow-by gas which flows through a gas flow passage. A chamber, which is partitioned from the gas flow passage including a gas introduction port, is provided between a cylinder head cover and a baffle plate. A first guide wall, which extends with a downward inclination toward the chamber so as to cover the gas introduction port and the chamber, is provided above the gas introduction port and the chamber. A drain hole for discharging the oil within the chamber is formed in the baffle plate.

An apparatus (1) for additive manufacturing of three-dimensional objects (2) by successive, selective layer-by-layer exposure and thus successive, selective layer-by-layer solidification of construction material layers of construction material (3) that can be solidified by means of an energy beam, comprising a filter device (7) provided for filtering process gas (9) arising in the course of performing additive construction processes in a process chamber (8) of the apparatus (1), especially containing impurities arising in relation to the process, wherein the filter device (7) comprises several filter modules (14) with a filter module housing (15) each, wherein every filter module housing (15) comprises a filter body receiving room (16) configured with a defined geometry provided for receiving a defined number of filter bodies (18) configured with a defined geometry, wherein every filter module (14) comprises connection interfaces (19, 20) on the filter module via which it is or can be connected, if required, to defined connection areas (21, 22) of a pipe structure (12) of the apparatus that is or can be flown through by the process gas (9).