An example welding system includes: a downdraft table having: a work surface; and a suction source configured to create a negative pressure through at least one of the work surface or a second surface adjacent to the work surface; and a positive pressure source configured to direct a positive pressure airflow around at least a portion of a periphery of the downdraft table.

An example welding system includes: a downdraft table having: a work surface; and a suction source configured to create a negative pressure through at least one of the work surface or a second surface adjacent to the work surface; and a positive pressure source configured to direct a positive pressure airflow around at least a portion of a periphery of the downdraft table.

A three-dimensional laser cutter can be disposed in a machining room. The machining room includes a ceiling and a plate member. The ceiling is provided with a suction port connected to a suction device. The plate member is disposed below the ceiling with a gap therebetween. The plate member forms a space with the ceiling.

A drill dust receptacle (1) for collecting drill dust (2) formed of a blank (4) of foldable sheet material and configured to be detachably attached to a surface, wherein the drill dust receptacle (1) comprises a receptacle portion (1.1) for holding drill dust having an upper edge (50) and a pointed bottom (40) and further comprises a front panel (20), a back panel (21) and a first and a second side section (22, 23), coupled to each other by a joint (60) such that the front panel (20) may be folded out from the back panel (21) and that; the joints (60) are formed by folds (31, 32, 33) in the foldable sheet material wherein that the receptacle portion (1.1) is formed of a rectangular receptacle section (10) of the blank (4) of foldable sheet material.

A drill dust receptacle (1) for collecting drill dust (2) formed of a blank (4) of foldable sheet material and configured to be detachably attached to a surface, wherein the drill dust receptacle (1) comprises a receptacle portion (1.1) for holding drill dust having an upper edge (50) and a pointed bottom (40) and further comprises a front panel (20), a back panel (21) and a first and a second side section (22, 23), coupled to each other by a joint (60) such that the front panel (20) may be folded out from the back panel (21) and that; the joints (60) are formed by folds (31, 32, 33) in the foldable sheet material wherein that the receptacle portion (1.1) is formed of a rectangular receptacle section (10) of the blank (4) of foldable sheet material.

This invention concerns an additive manufacturing apparatus for building objects by layerwise consolidation of material. The apparatus includes a build chamber containing a working area, a high energy beam for consolidating material deposited in the working area in layers and a flow device for generating a gas flow across at least a part of the working area from a gas inlet to a gas outlet. The gas inlet and gas outlet are arranged to be movable within the build chamber.

The invention relates to ventilation and machine building and can be used for cleaning air in local zone of nail service master. Technical result of the invention is to provide the possibility of reducing the impact of harmful factors and improving working conditions at the workplace of the nail service master and is achieved due to the fact that the device for cleaning the air in the working area of the nail service master contains: a housing, a fan, an air filter, a backlight line, light diffuser, multi-link hinge holder, clamp; the body is made collapsible from the lower and upper parts; holes are made below and above the body, covered with protective nets; a fan is mounted in the lower part of the case behind a protective mesh; an air filter is mounted above the fan, which is located in the upper part of the case; in the lower part of the housing, in a recess along the perimeter of the hole, a backlight line is mounted, which is covered with a light diffuser; the body is pivotally connected to a multi-link hinge holder, the links of which are movably interconnected; the holder is movably mounted on a clamp.

The invention relates to ventilation and machine building and can be used for cleaning air in local zone of nail service master. Technical result of the invention is to provide the possibility of reducing the impact of harmful factors and improving working conditions at the workplace of the nail service master and is achieved due to the fact that the device for cleaning the air in the working area of the nail service master contains: a housing, a fan, an air filter, a backlight line, light diffuser, multi-link hinge holder, clamp; the body is made collapsible from the lower and upper parts; holes are made below and above the body, covered with protective nets; a fan is mounted in the lower part of the case behind a protective mesh; an air filter is mounted above the fan, which is located in the upper part of the case; in the lower part of the housing, in a recess along the perimeter of the hole, a backlight line is mounted, which is covered with a light diffuser; the body is pivotally connected to a multi-link hinge holder, the links of which are movably interconnected; the holder is movably mounted on a clamp.

In a cleaning method for removing adhesive residues from surfaces, in particular after separating an adhesive connection between adhesively joined partners, liquid carbon dioxide from a reservoir enters a jet, apparatus and is guided there through a first dosing unit into an expansion chamber wherein a cold-resistant liquid is then supplied to a mixture created in the expansion chamber from gaseous carbon dioxide and carbon dioxide particles and wherein the mixture, to which the cold-resistant liquid has been added, exits the jet apparatus via an outlet opening thereof. Furthermore, a jet apparatus removes adhesive residues from surfaces.

A filter arrangement (200, 300, 400, 450) for a heavy duty dust extractor (100), the filter arrangement comprising a filter holder (180), an essential filter (150), a filter inlet (250), a filter outlet (260), a first air pressure sensor (310) and a second air pressure sensor (320), wherein the first air pressure sensor (310) is arranged to indicate an inlet air pressure (P3) associated with the filter inlet (250) and the second air pressure sensor (320) is arranged to indicate an outlet air pressure (P4) associated with the filter outlet (260), the filter arrangement further comprising a control unit (170) arranged to detect a state of the essential filter (150) based on a pressure difference between the inlet air pressure (P3) and the outlet air pressure (P4).