Abstract: An air purifier intended for use, e.g., as a grease filter in air venting systems. The purifier comprises a plurality of modules operating according to centrifugal separation, each module comprising at least one vortex chamber. Gas flow entering the vortex chamber is set into helical motion therewithin, such that the gas flows through the vortex chamber in a single direction, substantially perpendicular to a direction in which the incoming gas flow is introduced into the module.

Abstract: A constant air flow rate valve with changing cross-section, and having a throttling member disposed within a passage of changing cross-section, the throttling member changing shape depending upon differential pressure across the passage section. The throttling member is also disposed to be displaceable in a direction of a central axis of the passage section, for imposing a set-point value of flow rate. A procedure for controlling the constant air flow rate valve is also provided.

Abstract: The present invention concerns an air exhausting device, intended primarily for catering industry kitchens or equivalent. The air exhausting device comprises an outer housing, an exhaust chamber with at least one air aperture or grease filter unit, a collecting chamber for gaseous impurities and a blow chamber. The blow apertures of the blow chamber of the air exhausting device are disposed to produce a blow jet which induces a secondary air jet, which has on all sides of the blow apertures been arranged to act on its entirety in the proximity effect area. Above the blow apertures of the blow chamber has been disposed a guide baffle, arranged to direct the blow jet towards the grease filters to that the maximally efficient starting impulse of the blow jet is achieved, this impulse being arranged to substantially die out before arriving at the grease filter.

Abstract: The present invention concerns a way and a means for rendering equal the effect of gravity independent of the mode of installation in flow regulators for gaseous substances, particularly for air in air-conditioning and ventilation installations, and for maintaining the volumetric flow of the gaseous substance at desired magnitude with sufficient accuracy when the differential pressure acting across the flow regulator varies within given limits. The flow regulator comprises an envelope and a regulating member turnably disposed in the flow passage confined by the envelope. The torque produced by the flow of gaseous substance on the regulating member and on the other hand a countertorque dependent on the position of the regulating member cause the regulating member turning in the flow passage to assume a position of equilibrium such that the requisite pressure drop is obtained for maintaining the volumetric flow rate at predetermined magnitude. The regulating member is first balanced, e.g.

Abstract: The invention concerns a flow regulator, intended for gaseous substances, in particular for air in air-conditioning and ventilation installations, for maintaining the volumetric flow of the gaseous substance at desired magnitude with sufficient accuracy when the differential pressure acting across the flow regulator varies within desired limits. The flow regulator comprises an envelope and a regulating member disposed in the flow passage confined by the envelope. The flow regulator is provided with limiter members for limiting the differential pressure range of the flow regulator, said limiter members being disposed to restrict the movement of the regulating member. The limiters are adjustable and/or self-adjusting. The flow regulator has a scale for setting the limiter members.

Abstract: The present invention concerns a flow regulator for gaseous substances, particularly a flow regulator intended for air in air-conditioning and ventilation installations, for maintaining the volumetric flow of the gaseous substance at desired magnitude with sufficient accuracy when the differential pressure acting across the flow regulator varies within given limits. The flow regulator comprises an envelope and a regulating member turnably disposed in the flow passage confined by the envelope. The torque produced by the flow of gaseous substance on the regulating member and on the other hand a countertorque dependent on the position of the regulating member cause the regulating member turning in the flow passage to assume a position of equilibrium such that the requisite pressure drop is obtained for maintaining the volumetric flow rate at predetermined magnitude. The regulating member is substantially slightly curved at least in the flow surface facing the incoming flow of the gaseous substance.

Abstract: The present invention concerns a flow regulator for gaseous substances, particularly a flow regulator intended for air in air-conditioning and ventilation installations, for maintaining the volumetric flow of the gaseous substance at desired magnitude with sufficient accuracy when the differential pressure acting across the flow regulator varies within given limits. The flow regulator comprises an envelope and a regulating member turnably disposed in the flow passage confined by the envelope (11). The torque produced by the flow of gaseous substance on the regulating member and on the other hand a counter-torque dependent on the position of the regulating member cause the regulating member turning in the flow passage to assume a position of equilibrium such that the requisite pressure drop is obtained for maintaining the volumetric flow rate at predetermined magnitude.

Abstract: Apparatus for identifying and recording bottles and/or bottle hampers utilizes a light source for illuminating a target being examined, such as, for example, a bottle hamper and/or the bottles therein. A camera momentarily examines the target. A conveyor transports the target past the camera and the light source. The image produced by the camera is transmitted to a data processing unit, after it has been transformed into digital signals, for identifying the target. A recording device records the target. The camera is a semiconductor matrix camera and the light source emits a lineal light bar and the camera and the light source are so disposed in relation to the conveyor that the light emitted by the light source is reflected from the target under examination on the conveyor to the camera.

Abstract: A fuse for safety appliances such as fire limiters in ventilation systems, the fuse comprising a first part, a second part, fusible material disposed between said first and second parts for normally maintaining said parts in fixed position with respect to one another when the fusible material is in solid form, a narrow path being defined for flow of fusible material in molten form, and the first and second parts being urged towards one another. The parts move towards one another when the fusible material melts and flows through the narrow path. The parts stop moving when the fusible material stops flowing with the parts again maintained in fixed position with respect to one another when the fusible material resolidifies.

Abstract: The control/fire damper (10) comprises a tubular shell (11) constituting a flow duct (12), a shaft (13) disposed within the flow duct (12) and carried by the shell (11), and a closing plate (14) mounted on the shaft (13), and which in the case of fire damper use continuously tends to close under the action of a spring (17). The control/fire damper (10) is provided with a clamping counterpart (15) attached to the closing plate (14) and with a clamping device (16) passing through the shell (11), which fixes the counterpart (15) steplessly in the position which is desired in each instance. The clamping device (16) consists of a clamping screw and, in fire damper use, of a member attached by fuse material to the end of the clamping screw.

Abstract: For controlling and measuring the flow of a gas in a duct, apparatus including a collar member adapted to be sealingly connected to the duct and a plurality of overlapping throttling blades pivotally carried by mounting means situated within the collar member. These blades define the side surface of a truncated cone and have upstream end regions defining the base of the cone and downstream end regions defining the of the truncated cone as well as a throttling aperture through which the gas is adapted to flow. The blades are appropriately shaped and positioned so that one side edge region of each throttling blade overlaps and resiliently engages an adjacent side edge region of an adjacent throttling blade with a positive bearing force which results in a fluidly sealed engagement between each pair of adjacent blades so that the truncated cone defined thereby is rendered gas sealed.