Abstract: A fan volume flow rate detection device has a motor (M) with a speed controller (D) and at least one microcontroller (10). The speed (n) of the motor (M) is input at an input of the microcontroller as an input variable, in the form of a digital signal. This is used to determine the pressure difference ?p generated by the impeller wheel at this speed and the volume flow rate ?V/?t at a location (x) in a flow channel of the fan in a specific installation situation of a system (A), by a simulation model (SM) stored in memory of the microcontroller (10). Accordingly, the speed (n) of the motor is adjusted by the speed controller in the event of a deviation from a setpoint volume flow rate ?Vsetpoint/?t.

Abstract: The present disclosure relates to a cooling apparatus (1) comprising a metal and/or electrically conductive EMC enclosure (2) and a converter (E1) and also a plurality of electrically operated units (E2, . . . , En) within the EMC enclosure (2) which are designed to influence a local temperature in at least one region (30, 31) inside or outside the EMC enclosure (2), wherein the converter (E1) directly supplies at least one or more of the units (E2, . . . , En) with a respective supply voltage, and wherein the converter (E1) and the units (E2, . . . , En) are each designed such that the line-bound and/or field-bound interference (Sxy) which is specifically generated by this unit during operation of the cooling apparatus (1) is compensated for by a line-bound and/or field-bound interference (Sxy) of at least one of the respectively other units (E1, . . . , En) partially or completely in terms of its respective interference level (Pn).

Abstract: The present disclosure relates to a cooling apparatus (1) comprising a metal and/or electrically conductive EMC enclosure (2) and a converter (E1) and also a plurality of electrically operated units (E2, . . . , En) within the EMC enclosure (2) which are designed to influence a local temperature in at least one region (30, 31) inside or outside the EMC enclosure (2), wherein the converter (E1) directly supplies at least one or more of the units (E2, . . . , En) with a respective supply voltage, and wherein the converter (E1) and the units (E2, . . . , En) are each designed such that the line-bound and/or field-bound interference (Sxy) which is specifically generated by this unit during operation of the cooling apparatus (1) is compensated for by a line-bound and/or field-bound interference (Sxy) of at least one of the respectively other units (E1, . . . , En) partially or completely in terms of its respective interference level (Pn).

Abstract: The disclosure relates to an apparatus for reducing the quantity of solid particles in ambient air. A predefined treatment area is delimited at least in part by an enclosure. The enclosure is at least partially non-physical and formed by at least one air curtain that can be produced by an air flow generating device. At least one air filter device, which is connected in terms of flow to the ambient air of the treatment area is designed to filter solid particles directly out of the ambient air of the treatment area.

Abstract: A fan includes a sealed electronics housing, in which a printed circuit board having electronic components is arranged. The electronics housing is divided into an upper region and a lower region. A cooling wheel which is arranged in the lower region is axially adjacent to the printed circuit board. The printed circuit board has at least one central opening and a plurality of peripheral-edge openings or gaps in order to bring the upper region into fluid communication with the lower region. Air is drawn out of the upper region into the lower region by the cooling wheel via the at least one central opening and, via the plurality of peripheral-edge openings or gaps. The air is fed back into the upper region. An air circuit having at least one air flow develops along a surface of the printed circuit board on which the electronic components are arranged.

Abstract: A fan includes a sealed electronics housing, in which a printed circuit board having electronic components is arranged. The electronics housing is divided into an upper region and a lower region. A cooling wheel which is arranged in the lower region is axially adjacent to the printed circuit board. The printed circuit board has at least one central opening and a plurality of peripheral-edge openings or gaps in order to bring the upper region into fluid communication with the lower region. Air is drawn out of the upper region into the lower region by the cooling wheel via the at least one central opening and, via the plurality of peripheral-edge openings or gaps. The air is fed back into the upper region. An air circuit having at least one air flow develops along a surface of the printed circuit board on which the electronic components are arranged.

Abstract: The invention relates to a method and device for producing container-like composite packagings. A web-type material made of a composite that contains at least one layer of cardboard and at least one layer of plastic is folded, provided with a sealing seam and separated into sections, each forming a container. The sealing seam is produced prior to the separation of the web-type material into individual sections.

Abstract: A device and a method for filling liquid or pasty products having lumpy fractions and free flowing, pourable lumpy products comprising a storage container, means for opening or closing the outlet of the storage container and a gravity tube arranged underneath the storage container. The gravity tube has at least one flexible side wall. A device for mechanically pressing-in the at least one side wall of the gravity tube is also provided. In order to reliably exclude an accumulation of product in the gravity tube during filling and to increase the filling accuracy, the device for mechanically pressing-in the side wall of the gravity tube has rotatable elements for deforming the cross-section of the gravity tube. In this case, the side wall of the gravity tube is temporarily inwardly deformed by the device for mechanically pressing-in according to a specified scheme.

Abstract: First and second items of data information are detected during a method for automatically monitoring a packaging or filling process of a packaging machine. The first items specify the packaging and/or a packaging material used for forming the packaging, and the second items serve to describe machine parts, or machine functions of the packaging machine and/or specify products that are used for producing the packaging in the packaging machine. Before a process step, a quality control is carried out by detecting first and second items of data information required for carrying out the quality control and by determining actual data based on these items of information. These actual data are compared with predetermined set data and when the set data and actual data correspond with one another within a range of tolerance, this process set is enabled.