Abstract: A radial fan (1) with a housing (2) and a fan impeller (3) disposed therein, an air inlet (4) and an air outlet (5) is provided, a pressure space (6) being formed between the latter, and in front of the air inlet (4) a laminar element (7) being disposed which, in a bypass (8) formed therein, has a sensor (9) for recording at least one parameter of the medium flowing through the air inlet (4).

Abstract: A radial fan (1) with a housing (2) and a fan impeller (3) disposed therein, an air inlet (4) and an air outlet (5) is provided, a pressure space (6) being formed between the latter, and in front of the air inlet (4) a laminar element (7) being disposed which, in a bypass (8) formed therein, has a sensor (9) for recording at least one parameter of the medium flowing through the air inlet (4).

Abstract: The invention relates to a radial fan with a casing and in it an axially placed wheel, wherein the casing has an axially placed air inlet, an exhaust (5), a bottom section (6) with a bottom reference surface (7) arranged orthogonally to the axis and a spirally shaped compression space located radially around the wheel that extends to the exhaust port; and wherein the wheel has a cover disk that faces the air inlet port and a supporting disk; wherein the radial fan is characterized in that the spiral-shaped compression space (8) expands both in a radial direction from the axis towards the exhaust port (6) as well as in an axial direction; wherein the axial expansion extends over at least 180° of the spiral circumference; and in which a hollow cylindrical cup-shaped section (9) is recessed in the bottom section (6) in an axial direction beyond the bottom reference surface (7) into which the wheel is placed in such a way that an inside of the supporting disk of the wheel runs flush with the bottom reference surf

Abstract: The invention relates to a radial fan with a casing and in it an axially placed wheel, wherein the casing has an axially placed air inlet, an exhaust (5), a bottom section (6) with a bottom reference surface (7) arranged orthogonally to the axis and a spirally shaped compression space located radially around the wheel that extends to the exhaust port; and wherein the wheel has a cover disk that faces the air inlet port and a supporting disk; wherein the radial fan is characterized in that the spiral-shaped compression space (8) expands both in a radial direction from the axis towards the exhaust port (6) as well as in an axial direction; wherein the axial expansion extends over at least 180° of the spiral circumference; and in which a hollow cylindrical cup-shaped section (9) is recessed in the bottom section (6) in an axial direction beyond the bottom reference surface (7) into which the wheel is placed in such a way that an inside of the supporting disk of the wheel runs flush with the bottom reference

Abstract: An improved centrifugal fan whose air capacity is to be increased, without changing the dimensions of the casing and without using a higher-powered motor improves the fan by a) reducing the volume of the pressure space by enlarging the impeller diameter, b) shifting a location of a least distance between the impeller and the casing in the direction of rotation of the impeller, c) forming a wedge-shaped space ahead of the location of the least distance, and d) providing the impeller with very flat blades. The centrifugal fan has a higher air capacity at a lower rpm.

Abstract: A peristaltic pump, which includes a flexible tube arranged along a circular path and in which a compression member is driven by an electric motor via a gearing, is to be compact and easy to manufacture, so that it can be produced at such a low cost as to be also suitable for applications where it has previously been too expensive. To accomplish this, parts of the pump are combined with parts of the gearing.

Abstract: An impeller formed from sheet-metal by stamping and bending, at a low production cost, capable of delivering an increased quantity of air at a reduced noise level and with reduced power consumption and enhanced efficiency. The method of manufacturing the impeller from sheet metal incorporates sufficient versitility to allow the blades of the impeller to be formed to any desired configuration in order to provide an optimum shape for the intended impeller use. The blades can be curved or twisted and can extend perpendicular from the sheet-metal surface or at any desired angle for optimum utilization.

Abstract: A circulation fan for circulating air in the baking muffle of an oven in which a conductive connection is made between the drive shaft and the back wall of the baking muffle whereby the RF energy passing outward over the surface of the drive shaft is short-circuited via the back wall of the baking muffle. The conductive connection is in the form of a spring element, e.g. a clamping member or a disk spring, whereby manufacturing and operational variations are compensated for. If the portion of the drive shaft located outside the baking muffle is roughened and/or covered with an electrically poorly conducting coating, further damping of the escaping RF energy is obtained.

Abstract: A frame-supported fan in which the mounting portions between the motor and the frame are formed in the shape of an arrowhead and/or are provided with sculptured edges extending to the frame or are provided with interfering bodies mounted to the outer ends of the edges of the frame, so as to reduce unwanted noise by producing non-uniform flow separation in the air stream through the fan.

Abstract: In a tangential blower, the vortex former is provided on the suction (intake) side with a sharp-edged interfering body at least extending over one-half of its length. The interfering body reduces siren like noise which would otherwise be produced.

Abstract: A tangential blower, especially one having small external dimensions, which is essentially improved in its noise behavior. The baffle plate of the blower has a particular curved or shell shaped construction, and the vortex former consists of three leg portions connected to one another.

Abstract: In a tangential blower having side walls near the air outlet provided with lugs projecting into the high pressure chamber.

Abstract: Owing to a new design of the partition wall (vortex former) of the novel type tangential blower, there is achieved an improvement of the pressure-volume characteristic and a reduction of the noise development.