Abstract: An apparatus for sound damping for a ventilator, and a ventilator comprising the apparatus. In addition to the apparatus, the ventilator comprises a respiratory gas inlet, a respiratory gas outlet and a respiratory gas path formed between the respiratory gas inlet and the respiratory gas outlet and comprising a blower configured to deliver a respiratory gas from the respiratory gas inlet to the respiratory gas outlet, such that the respiratory gas path has a suction side and a pressure side. The apparatus comprises: a chamber, which is configured to be arranged between the blower and the respiratory gas outlet, on the pressure side, in the respiratory gas path, and a tubular duct, which is designed to connect the chamber fluidically to the respiratory gas outlet.

Abstract: A respiratory therapy device comprises a gas inlet, a gas outlet, a fan for conveying respiratory gas from the gas inlet to the gas outlet and a chamber for sound damping. The chamber comprises a first opening, a second opening and a tubular channel, which comprises an inner channel section protruding from the first opening into the interior of the chamber and/or an outer channel section protruding from the first opening into the exterior surroundings of the chamber. The device is configured so that the respiratory gas, when it is conveyed from the gas inlet to the gas outlet, flows between the first opening and the second opening through the chamber and passes the channel in this case.

Abstract: The invention relates to a method for manufacturing a three-dimensional component. It is proposed to manufacture, during the build operation in the build space of the layer manufacturing system, not only the component but also at least one characterizing element associated with the component. The characterizing element allows simple, fast, and reliable sorting of the three-dimensional components.

Abstract: A method for manufacturing a first part and a further part in a manufacturing machine including a construction space for manufacturing parts, the method including the steps of providing position and contours of the first part positioned in the construction space as digital first part data, providing digital construction space data representing the construction space, providing the digital first part data and the digital construction space data to a potential ordering party for displaying the first part in the construction space, receiving digital second part data representing the further part and its position in the construction space, virtual positioning of at least one other part which was not yet commissioned in the displayed construction space, and manufacturing the at least one first part and the at least one further part in the manufacturing machine.