Ebm-papst Mulfingen Gmbh & Co Kg

Emb-papst Mulfingen Gmbh & Co Kg

Daniel Gebert

Oliver Haaf

Thomas Heli

Peter Riegler

Wolfgang Laufer

Thorsten Pissarczyk

Tobias Sieger

Eugen Usselmann

Werner Haas

Erhard Gruber

Jens Müller

Michael Strehle

Josef Rathgeb

Manuel Vogel

Valerius Schaaf

Alexander Konzal

Marc Schneider

Katrin Bohl

Sebastian Hoss

Jürgen Schöne

Daniel Conrad

Markus Engert

Björn Sudler

Jens Mueller

Valerius Schaff

Angelika Klostermann

Joerg Guenther

Eugen Kleinhanss

Ann-Kathrin Löber

Johannes Dörr

Niels Blaha

Eugen Kleinhanß

The disclosure relates to a retaining device for an anemometer, designed for use on a fan housing of a fan, wherein the retaining device is designed as a flow conditioner having a plurality of axial flow channels divided into a honeycomb structure by an arrangement of bars, and wherein the retaining device has retaining means, by means of which the anemometer can be fastened to the retaining device such that the former axially adjoins the flow channels.

Retaining device for an anemometer, and centrifugal fan

A diagonal fan has an electric motor, housing, and diagonal impeller, which is accommodated within the housing, can be driven via the electric motor, and generates a diagonal flow during operation that is deflected in an axial flow direction by an inner wall of the housing. Outlet guide vane device with a plurality of guide vanes distributed in the circumferential direction is arranged adjacently to the diagonal impeller when viewed in the axial flow direction, and homogenizes airflow generated by the diagonal impeller. Guide vanes have a radial extension from a hub region of the outlet guide vane device to the housing. An imaginary extension in the outflow angle of the diagonal impeller strikes the inner wall of the housing at an axial distance K from the diagonal impeller. Outlet guide vane device is arranged at axial distance H to diagonal impeller where 0.75≤K/H≤1.25.

Diagonal fan with outlet guide vane device

A diagonal fan has an electric motor, a housing, and a diagonal impeller received in the housing. The diagonal fan is driven via the electric motor. The fan generates a diagonal flow during operation that is deflected in an axial flow direction by an inner wall of the housing. An outlet guide vane device is arranged adjacent to the diagonal impeller when viewed in the axial flow direction. The outlet guide vane device has a plurality of guide vanes that are distributed in a circumferential direction. The outlet guide vane device homogenizes an airflow generated by the diagonal impeller. The device has an air outlet with a specified outlet diameter B. The diagonal fan extends over a total axial length E. The ratio of the total axial length E to the outlet diameter B is configured such that 0.3&#x2264;E/B&#x2264;0.6.

Compact diagonal fan with outlet guide vane device

A diagonal fan wheel () has a cover disk () and a bottom disk (). A plurality of three-dimensionally curved blades (S) are arranged between the cover disk () and bottom disk (). The blades (S) are connected to the cover disk () and bottom disk () in a materially bonded manner.

Diagonal fan wheel with increased strength

A diagonal fan includes an electric motor, a housing, and a diagonal impeller received inside the housing and drivable via the motor. The diagonal flow during operation is deflected in an axial flow direction. The diagonal impeller includes impeller blades distributed in the circumferential direction and a slinger ring encloses said blades. The diagonal fan includes an inlet nozzle on the suction side accommodating a main flow for the diagonal fan. The inlet nozzle extends overlapping at least in sections relative to the radial section of the slinger ring forming a nozzle gap therewith. A bypass channel on the housing forms a flow connection from a pressure-side surrounding region (U) of the diagonal fan to an inflow side of the nozzle gap. During operation of the diagonal fan, a swirl-free secondary flow (NS) is guided at the inflow side of the nozzle gap via the bypass channel.

Diagonal fan having swirl reduction at the diagonal impeller

An impeller with impeller blades arranged around a rotational axis of the impeller. Integral, seamless, and notch-free transitions are formed into a disc body on at least one of their two axial sides. The disc body connects the impeller blades in the circumferential direction around the rotational axis. Covering portions, between the impeller blades, determine the flow channels of the impeller.

Impeller with a seamless connection of the impeller blades to a disc body

A centrifugal or diagonal impeller has impeller blades () that are curved in the circumferential direction about an axis of rotation and are formed from a single-layer sheet metal. Each blade () has a suction side () and a pressure side () as well as a blade leading edge () and a blade trailing edge (). At least the blade leading edge () of the impeller blades () adjacent to their suction side () have a geometric edge modification in the form of a rounding () over a predetermined partial length of a blade thickness (SD) of the impeller blades ().

Centrifugal or diagonal impeller with modified blade edge

A diagonal fan having an electric motor and a diagonal impeller which can be driven about an axis of rotation (RA) by means of the electric motor. The diagonal impeller determines an air inlet and an air outlet and has a hub and impeller vanes which are distributed in the circumferential direction, extend radially outwards from the hub and are surrounded radially externally by a slinger ring. A flow angle &#x3b1;D formed by the slinger ring relative to the axis of rotation (RA) increases from the air inlet to the air outlet, and a flow angle &#x3b1;N formed by the hub relative to the axis of rotation (RA) decreases from the air inlet to the air outlet.

Diagonal fan having an optimized diagonal impeller

The invention relates to a housing, wherein the housing has a cover disk having a cylindrical wall and a central receptacle with a hub for supporting a fan having a diagonal fan wheel, wherein a plurality of three-dimensionally curved air guide vanes (S) are arranged about the hub, characterized in that the air guide vanes (S) are materially connected to the cylindrical wall and as a result, the housing is produced in one working step.

Housing produced in one working step

A fan wheel () has a bottom disc (), a cover disc () and impeller blades () arranged around a rotation axis (RA) of the fan wheel (). The blades, in each case, extend over a blade length from a blade leading edge () to a blade trailing edge (). The impeller blades () are divided into a front section (), rear section () and transition section (). The front section (), extends proceeding from the blade leading edge () in the direction of the blade trailing edge (). The rear section () extends proceeding from the blade trailing edge (), in the direction of the blade leading edge (). The transition section () forms a transition between the front section () and the rear section (). The impeller blades () are formed with opposite curvature in the course from the bottom disc () to the cover disc () in the front section () and the rear section ().

Fan wheel with three dimensionally curved impeller blades

A diagonal fan having an electric motor, a housing and a diagonal impeller generating a diagonal flow which is deflected into an axial flow direction. The diagonal impeller has impeller blades, an air inlet and an air outlet, wherein the housing forms a flow channel for an airflow generated by the diagonal impeller, which has a non-rotationally symmetric axial section and a cylindrical axial section axially directly adjacent, as seen in the flow direction, wherein an air outlet-side radial outer end of the diagonal impeller is arranged in the cylindrical axial section of the flow channel of the housing and an air gap is provided between the radial outer end and the housing, and wherein the non-rotationally symmetric axial section of the flow channel is arranged in a region of the flow channel which is adjacent to the air-inlet side of the air gap in an axial plane with the diagonal impeller.

Diagonal fan having an optimized housing

An axial fan for use with a wall ring plate includes a housing having an inlet region and a rotor. The rotor has an increased rotor diameter compared to a standardised rotor diameter. On the inlet side, the inlet region has a tapered section that narrows in an arched manner in a cross-sectional view from an inlet diameter to a wall ring diameter. The axial width and radial length of the tapered section are formed in a predetermined ratio.

Axial fan with increased rotor diameter

The present disclosure relates to a radial fan wheel having a plurality of fan wheel blades arranged in a blade ring and at least one plate that, at least in sections, covers the fan wheel blades axially on the front side, wherein two adjacent fan wheel blades form a blade channel therebetween, the flow cross section of which is axially limited by the plate; an axial width of the blade channel increases to a maximum (M) at least along an outer periphery of the radial fan wheel starting from a suction side (S) of a fan wheel blade limiting the blade channel in the direction of a pressure side (D) of the adjacent fan wheel blade limiting the blade channel; wherein the maximum lies on a radial section of the fan wheel, which radial section lies between 55 and 95% of the distance between the suction side (S) of the fan wheel blade limiting the blade channel and the pressure side (D) of the adjacent fan wheel blade limiting the blade channel such that the plate, when viewed in the circumferential direction, has an asymmetrical shape between two adjacent fan wheel blades.

Covered radial fan wheel with a periodically and asymmetrically shaped plate

The present disclosure relates to a current rectifier for being arranged on the suction area of a ventilator, with an axial initial flow side and an axial exit flow side, wherein the current rectifier comprises several crossing struts formed by at least one circumferential strut and by at least one radial strut, and a pressure measuring conduit is constructed at least in one of the struts and which comprises at least one opening facing the exit flow side, and wherein the pressure measuring conduit comprises a measuring opening for being connected to a measuring line for the connection to a pressure sensor or a pressure sensor is integrated in the pressure measuring conduit.

Flow rectifier of a fan

A radial fan has a housing with a motor-drivable fan wheel. The fan wheel generates an air volume flow during operation. The housing has a blow-out portion () with an impeller (). The impeller () has a plurality of impeller blades () spaced apart in the circumferential direction. The impeller () is driven by the air volume flow generated by the fan wheel.

Growing community of inventors

Öhringen, Germany

Daniel Gebert