| Patents for F04D 27 - Control, e.g. regulation, of pumps, pumping nstallations or pumping systems specially adapted for elastic fluids (9,590) |
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| 02/14/2008 | WO2008018380A1 Control device for internal combustion engine with supercharger |
| 02/14/2008 | WO2008018202A1 Pump and pump system |
| 02/14/2008 | US20080038118 Pumping System |
| 02/14/2008 | US20080036403 Fan control system |
| 02/13/2008 | EP1887449A2 Process and device for flow control of an electrical motor fan |
| 02/13/2008 | CN101122297A Energy-saving type constant pressure fluid conveying machine parallel arrangement |
| 02/13/2008 | CN101122296A Mining energy-saving ventilating fan |
| 02/13/2008 | CN100368690C Method for deciding margin of single line blade of axial flow compressor |
| 02/13/2008 | CN100368689C Differential thrust balance device for rotary fluid machinery |
| 02/12/2008 | US7330770 Fan selection method and fan selection device |
| 02/12/2008 | US7329103 Cooling fan with built-in adjustable speed |
| 02/12/2008 | US7328587 Integrated adaptive capacity control for a steam turbine powered chiller unit |
| 02/06/2008 | CN101117961A Cold-hot dual purpose fan |
| 01/31/2008 | WO2008012150A1 Method for determining a statement of a state of a turbomolecular pump and a turbomolecular pump |
| 01/31/2008 | DE102007034654A1 Electrical blower device e.g. cooling fan, for vehicle, has control unit that controls switching on/switching off process of control switch that is adapted to control motor current that is supplied to blower motor, by pulse width modulation |
| 01/31/2008 | DE102006034478A1 Verfahren zur Ermittlung einer Aussage über einen Zustand einer Turbomolekularpumpe sowie eine Turbomolekularpumpe A method for determining an indication of a state of a turbo molecular pump and a turbo-molecular pump |
| 01/31/2008 | DE102006034179A1 Operating unit, particularly compressor unit, has two operating arrangements, which has electromotor and operating machine, and operating unit has frequency converter which is alternatively connected to electromotor or another electromotor |
| 01/30/2008 | CN201013639Y Circuit for controlling rotary speed of fan |
| 01/30/2008 | CN201013633Y Blower fan with electric activator |
| 01/30/2008 | CN100365248C Running controlling apparatus and running controlling method for single-shaft combine equipment with clutch |
| 01/29/2008 | US7322799 Scalable, modular, high availability fan system |
| 01/23/2008 | EP1881233A2 Toroidal type continuously variable transmission |
| 01/23/2008 | EP1881161A2 Aeroengine bleed valve |
| 01/23/2008 | CN201011346Y Programmable information displaying fan |
| 01/23/2008 | CN101109392A Unloading protection equipment of angle changing fan head swinging mechanism |
| 01/23/2008 | CN100363595C Compressor casing |
| 01/22/2008 | CA2358593C Compressor bleeding using an uninterrupted annular slot |
| 01/16/2008 | CN201007285Y Induction electric fan |
| 01/16/2008 | CN100362449C Fan monitoring device and its monitoring method |
| 01/16/2008 | CN100362448C Method for monitoring run of fan |
| 01/10/2008 | US20080008574 Leakage flow control and seal wear minimization system for a turbine engine |
| 01/09/2008 | EP1875080A1 Electronic module for a fan of an internal combustion engine in a motor vehicle |
| 01/09/2008 | EP1875079A1 System and method of determining centrifugal turbomachinery remaining life |
| 01/09/2008 | CN101101008A Centrifugal fan and aeration device with indoor air purifying function |
| 01/09/2008 | CN101101003A Mine single lane tunneling aeration machine integrated control system |
| 01/09/2008 | CN101101002A PLC based three lane tunneling aeration machine integrated control system |
| 01/09/2008 | CN101101001A Fan system and its switch control device |
| 01/03/2008 | WO2008000459A1 Device and method for performing a functional test on a control element of a turbo engine |
| 01/03/2008 | US20080003093 Power system |
| 01/03/2008 | DE102006030108A1 Vorrichtung und Verfahren zum Durchführen eines Ventiltests an einer Turbomaschine Apparatus and method for performing tests on a valve of a turbomachine |
| 01/03/2008 | DE102006029723A1 Lüftersteuerung und Verfahren zur Einstellung der Drehzahl eines Lüfters Fan control and method for adjusting the speed of the fan |
| 01/02/2008 | EP1872061A1 Method for controlling pressure delivered by the variable speed fan of a ventilation device |
| 01/02/2008 | CN200999743Y Blower fan speed governing system in air conditioner |
| 01/02/2008 | CN200999737Y Fan |
| 01/02/2008 | CN101096957A Fan operating control system |
| 01/02/2008 | CN101096956A Fan control device with thermoelectric effect control circuit |
| 12/27/2007 | WO2005111412A3 Self-calibrating fan |
| 12/26/2007 | CN101092967A Control method for fan |
| 12/25/2007 | US7311491 Molecular drag, turbomolecular, or hybrid pump with an integrated valve |
| 12/25/2007 | US7310959 Method for actuating a fan using a plurality of characteristic curves and a control program for controlling the power of the fan |
| 12/21/2007 | WO2007146754A1 Apparatus and method to provide reduced fan noise at startup |
| 12/21/2007 | WO2007144430A1 Gas turbine compressor |
| 12/20/2007 | US20070292258 Actuation pressure control for adjustable seals in turbomachinery |
| 12/20/2007 | US20070292257 Apparatus and method to provide reduced fan noise at startup |
| 12/20/2007 | US20070289286 Gas Turbine With a Compressor Housing Which is Protected Against Cooling Down and Method for Operating a Gas Turbine |
| 12/20/2007 | DE10147111B4 Luftzuführvorrichtung für ein Radialgebläse Air supply for a radial fan |
| 12/19/2007 | EP1866545A1 Flow stabilization system for centrifugal compressor |
| 12/19/2007 | CN200994171Y Radiating fan for DLP projection television receiver |
| 12/19/2007 | CN100356682C Method and system for intelligent fan speed control |
| 12/13/2007 | WO2007141160A1 Annular flow duct for a turbomachine through which a main flow can flow in the axial direction |
| 12/13/2007 | DE102006026834A1 Vorrichtung zur Messung des Verstellhubes einer hydraulischen Verstelleinrichtung Device for measuring the displacement stroke of a hydraulic adjusting device |
| 12/12/2007 | EP1865205A2 Support device for pressure sensors arranged inside the pressure chambers of centrifugal fans, particularly for ventilation hoods or fume extractors |
| 12/12/2007 | EP1865204A2 Device for measuring the displacement stroke of a hydraulic displacement device |
| 12/12/2007 | EP0891522B1 Methods and apparatuses for detecting surge in centrifugal compressors |
| 12/12/2007 | CN200989319Y Fan voltage-stabilizing controller |
| 12/12/2007 | CN101086261A Device for measuring the displacement travel of a hydraulic displacement mechanism |
| 12/12/2007 | CN100354579C Blower |
| 12/12/2007 | CN100354530C Serial fan group, and method for generating match curve of rotate speed |
| 12/11/2007 | US7306426 Protection mechanism for flow inducing device |
| 12/06/2007 | WO2007140156A1 Inclined rib ported shroud compressor housing |
| 12/05/2007 | EP1862641A1 Annular flow channel for axial flow turbomachine |
| 12/05/2007 | EP1353091B1 Toroidal continuously variable transmission |
| 12/05/2007 | CN200985892Y Inflated and deflated device |
| 12/05/2007 | CN101082344A System and method for detecting rotating stall in a centrifugal compressor |
| 12/04/2007 | CA2422443C High-pressure multi-stage centrifugal compressor |
| 11/29/2007 | WO2007135991A1 Stall sign detector and detection method, and engine control system |
| 11/29/2007 | US20070274822 Vacuum Pump |
| 11/28/2007 | EP1860282A1 Compressor airfoil with integrated sensing elements and associated compressor |
| 11/28/2007 | CN200982323Y Combined type fan mounted on window frame |
| 11/28/2007 | CN101078404A Luminous air blower |
| 11/28/2007 | CN100351527C Turbocompressor and its operation method |
| 11/21/2007 | EP1856416A1 Apparatus for inhibiting the propagation of a flame front |
| 11/21/2007 | CN200980055Y A controlling circuit for the positive and negative turning of a ceiling fan |
| 11/21/2007 | CN200979664Y An intelligent electricity-saving control system for blast and pump |
| 11/21/2007 | CN101076671A Method for operation of a compressor supplied by a power converter |
| 11/21/2007 | CN101074676A Constant-speed compressor |
| 11/21/2007 | CN100350158C System and method for detecting rotating stall in a centrifugal compressor |
| 11/21/2007 | CN100350157C Method for stopping rotation by touching fan and product |
| 11/15/2007 | US20070261420 Method and Device for Controlling a Coolant Circuit of an Air Conditioning System for a Vehicle |
| 11/14/2007 | EP1854989A2 Cover of a bleed air relief system in a turbomachine |
| 11/14/2007 | EP1853825A1 Turbocharger compressor having ported second-stage shroud, and associated method |
| 11/14/2007 | EP1694967B1 Fan comprising a laminar flow element in front of the intake opening |
| 11/14/2007 | CN200975355Y Inducing blower fan controller |
| 11/14/2007 | CN200975354Y Blast volume controller of electric fan |
| 11/13/2007 | US7295897 Mapping a plurality of sensors to respective zones in a fan control system |
| 11/13/2007 | US7294980 Fan control system |
| 11/13/2007 | US7293954 Centrifugal compressor for turbo chiller, turbo chiller, and control method therefor |
| 11/08/2007 | WO2006082366A8 Method of operating a pumping system |
| 11/07/2007 | EP1492957B1 Vacuum pump |
| 11/07/2007 | CN200971876Y Vane dynamic rotation mechanism of crank-slide disc typ fan |