Abstract: A connection between tubes (26) in cyclone separators for separating liquid and vapour phases of a working fluid. It includes a pre-cut disc (21) in which are fitted the hexagonal ends (27) of stamped or cast metal adaptors, said adaptors being connected by their ends of the side opposite to the cross-sections of the tubes, thereby providing the inlet of the mixture in the tubes with a cross-section which is not very different from that of the supply tube.

Abstract: A vertical separator for separating the liquid and vapor phases of a fluid. The separator includes an outer casing having an inlet chamber for the vapor-mixture and vertical tubes provided at their inlets with fixed vanes which cause the mixture to flow helically. Coaxial tubes at their outputs, of smaller diameter enable dry vapor to be removed. A mixture with an increased liquid content is caused to be removed through the annular spaces, between the coaxial tubes. The annular spaces communicating with a free space in which said mixture with increased liquid content is separated into dry vapor and a liquid which still contains some vapor, and said inner tubes communicating with a dry vapor collecting chamber. An annular edge allows the vapor which is still contained in the liquid to escape upwardly through an annular peripheral passage between said annular edge and the outer casing.

Abstract: A separator is disclosed for removing from a gas stream suspended particulates such as liquid droplets and finely divided solids. A housing chamber encloses a tube that contains a gas swirl device for imparting a swirling motion to the gas stream entering the inlet of the tube. A separator conduit is axially aligned with the tube and has its upstream end coaxially located in the downstream end of the tube, defining an annular ejection port. Suspended particulates and scavenging gas are discharged into the chamber through the annular ejection port. The downstream end of the separation conduit is in communication with the outlet of the housing. A passage is provided for returning the scavenging gas to the main gas stream at the outlet of the housing. A separation device is located in the passage to cleanse the scavenging gas of suspended particulates prior to recombination with the main gas stream.

Abstract: A vortex air cleaner and acoustic attenuator assembly is provided having an array of vortex air cleaners which remove contaminant particles from influent air, and an array of spaced acoustic sheets defining passages therebetween for reception of clean effluent air from selected groups of adjacent vortex air cleaners in the array, the sheets being shaped and spaced to deflect such effluent air and sound pressure waves at least once from the acoustic surface of the sheets, thereby absorbing the maximum sound in the preferred frequency range of 8000 Hertz and reducing the imposed sound pressure level in which the vortex air cleaner assembly operates.

Abstract: A hood assembly for use with cooking equipment having a plurality of units for separating foreign matter from air moving through the hood assembly. Each unit has a cylindrical tubular member having a passage for carrying the air and entrained foreign matter. A plurality of helical elements are located in the passage. The adjacent helical elements are located in 90.degree. relationship relative to each other so that the air moving through the passage is divided into separate helical paths which direct the air in spiral patterns whereby the foreign matter is separated from the air by the mechanisms of centrifugal force, adhesion and impaction. The foreign matter is collected and carried to a container. The cleaned air is recycled into the environment surrounding the hood assembly.

Abstract: This dust collector provides a means of removing dust from air ventilation ducts without utilizing water and includes a cylindrical body aligned with the duct and having a bank of venturi tubes mounted between spaced walls within the body. An exhaust blower creates an airflow in the body and dust-laden air passing through the tubes is subjected to centrifugal action so that the dust is concentrated into a relatively small portion of the air, which is diverted transversely through the venturi throats and into a throat chamber defined by the spaced walls. An external conduit system communicating with the throat chamber returns the diverted air into the cylindrical body upstream of the exhaust blower through a return opening, the blower providing negative pressure in the conduit system which results in a portion of the air passing through the cylindrical body being continuously recycled.