Patents
Sitemap › F04 - Positive-displacement machines for liquids; Pumps for liquids or elastic fluids › F04C - Rotary-piston, or oscillating-piston, positive-displacement machines for liquids; Rotary-piston, or oscillating-piston, positive-displacement pumps › F04C 28 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
Patents for F04C 28 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids (4,928)
12/2008
12/24/2008CN201170183Y Rotary speed controlling mechanism of powder grain material transport vehicle air compressor
12/24/2008CN101328889A Scroll machine with continuous capacity modulation
12/24/2008CN100445561C Helical-lobe compressor for refrigerating plant
12/18/2008WO2008153060A1 Compressor
12/17/2008EP2003339A2 Rotary piston machine
12/17/2008EP1345663B1 Method for regulating a compressor installation with a dryer and compressor installation used therewith
12/17/2008CN201165979Y Press switch protection type vortex compressor
12/17/2008CN101326369A Roots pump and fuel cell system
12/17/2008CN100443830C Air-conditioner, outdoor unit and refrigeration unit
12/10/2008CN201162676Y Gasoline mobile double-screw type air compressor
12/10/2008CN100441875C Rotary compressor
12/10/2008CN100441873C Scroll compressor with hot oil temperature responsive relief of back pressure chamber
12/10/2008CN100441872C Variable volume type rotary compressor and its control method
12/03/2008EP1209361B1 Internal intermediate pressure 2-stage compression type rotary compressor
12/03/2008CN201159174Y Vehicle steering pump
12/03/2008CN101315077A Operation method of oil-cooled type screw compressor
12/03/2008CN101315072A Control valve for variable capacity compressors and method for manufacturing the same
12/02/2008US7458223 Compressor configuration system and method
11/2008
11/26/2008CN100436824C Screw compressor witrh axially sliding capacity control
11/26/2008CN100436822C Sealed type electric compressor
11/19/2008EP1992820A1 Freezing device
11/19/2008CN101307962A Refrigerant system possessing multi- speed cyclone compressor and economizer loop
11/19/2008CN101307758A Temperature control device for variable displacement compressor
11/19/2008CN100434711C Screw compressor
11/19/2008CN100434709C Temperature sensor arranging structure for vortex compressor
11/19/2008CN100434708C Compression device of roller compressor
11/19/2008CN100434707C Capacity-changing unit of orbiting vane compressor
11/13/2008WO2008137244A2 Portable air compressor/generator control method and system
11/13/2008WO2008136497A1 Compressor and refrigeration device using the same
11/12/2008CN201148973Y Rear end air charging and discharging rotary vane compressor
11/12/2008CN100432585C An adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor
11/12/2008CN100432584C An adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor
11/12/2008CN100432441C Variable capacity rotation compressor
11/12/2008CN100432440C Linked regulatable load reducing valve
11/12/2008CN100432438C Rotary compressor
11/05/2008CN201144845Y Blast aerator for sewage disposal
11/05/2008CN201144815Y Screw type variable-frequency air compressor
11/05/2008CN201144813Y Digital type compressor special-purpose protector
11/05/2008CN201144812Y Screw compressor volume adjustment structure
11/05/2008CN201144811Y Digital capacity changing rotary compressor
11/05/2008CN100430674C Digital volute condensation unit controller
11/05/2008CN100430602C Scroll fluid machinery
10/2008
10/29/2008CN101294572A Multi-stage gas compressing apparatus
10/28/2008USRE40554 Capacity modulated scroll machine having one or more pin members movably disposed for restricting the radius of the orbiting scroll member
10/28/2008US7442012 Speed control for compressors
10/23/2008DE102005040921B4 Trockenlaufender Schraubenverdichter mit pneumatisch gesteuertem Entlüftungsventil Non-lubricated screw compressors with pneumatically controlled vent valve
10/22/2008CN201137559Y Compressor built-in protector
10/21/2008US7437882 Apparatus for driving a compressor and a refrigerating air conditioner
10/16/2008WO2008123171A1 Mechanism for controlling and operating compressor capacity and air conditioner having the same
10/15/2008EP1979620A1 Improved compressor device
10/15/2008EP1979619A1 Vacuum pump unit
10/15/2008EP1979615A1 Airflow compressor control system and method
10/15/2008EP1523624B1 Discharge porting design for screw compressor
10/15/2008EP1442222B1 Vacuum pump
10/15/2008CN101285469A Sliding component and swirl motor compressor using the same
10/15/2008CN100425840C Smart control valve for compressors
10/15/2008CN100425835C Method for controlling a compressed air installation comprising several compressors, control box applied thereby and compressed air installation applying this method
10/09/2008DE112006003112T5 Pumpe eines Roots-Typs und Brennstoffzellensystem Pump of a Roots-type and fuel cell system
10/09/2008CA2681595A1 Compressor having a high pressure slide valve assembly
10/08/2008CN100424980C Apparatus for compensating for speed error of motor
10/08/2008CN100424352C By-pass valve assembly of rotary displacement compressor
10/08/2008CN100424351C Variable capacity rotary compressor
10/07/2008WO2008081899A1 Multistage compressor
10/02/2008US20080240953 Rotary compressor unit and method of controlling operation thereof
10/02/2008US20080240939 Compressor Having a High Pressure Slide Valve Assembly
10/02/2008DE102007014554A1 Rotary piston blower for use as root blower, has rotary piston unit with rotary pistons, and housing wall formed with gas discharge opening, and edge limiting gas discharge opening with partial section movably arranged
10/01/2008EP1975415A2 Rotary compressor unit and method of controlling operation thereof
10/01/2008EP1975370A1 Rotary compressor with accumulator and heat pump system
10/01/2008CN101275799A Digital controller for scroll compressor condensing unit
10/01/2008CN101275565A Method for ensuring stepless adjustment screw rod air-conditioning unit to normally start up
10/01/2008CN101275564A Rotary compressor unit and method of controlling operation thereof
09/2008
09/25/2008WO2008115101A1 Method for operating a variable displacement compressor and system with a variable displacement compressor
09/25/2008WO2008113140A1 A control system for a compressor actuated by an electric motor
09/25/2008WO2008091977A3 System and method of operation of multiple screw compressors with continuously variable speed to provide noise cancellation
09/24/2008CN101270749A Oil-free helical lobe compressor rotor anti-seizing protection method and device
09/18/2008US20080226482 Compressor With Controlled Capacity
09/17/2008CN100419352C Vortex machine with continuous power regulation
09/12/2008WO2008106990A1 Compressor device
09/11/2008US20080219874 Variable displacement vane pump
09/10/2008EP1967735A1 Single stage roots vacuum pump and vacuum fluid transport system employing that single stage roots vacuum pump
09/04/2008WO2008105090A1 Rotary compressor
09/03/2008EP1963678A1 A screw compressor
09/03/2008CN101255865A Scroll-type compressor as well as floating mode for moving eddy disk and oil path control mode
09/02/2008US7419370 Scroll compressor having a position adjustment device urging the movable scroll towards the stationary scroll by moving a seal formed between a support and the movable scroll
09/02/2008US7419365 Compressor with capacity control
08/2008
08/28/2008WO2008101387A1 A controlling method of a rotary compressor
08/28/2008CA2677951A1 Compressor having a dual slide valve assembly
08/27/2008EP1960668A1 Apparatus for detecting a flammable atmosphere within a compressor, in particular avacum pump
08/27/2008CN201106559Y Electric control loading device of screw type compressor
08/27/2008CN201106556Y Minitype screw type air compressor
08/27/2008CN201106555Y Minitype frequency conversion screw type air compressor
08/27/2008CN101251110A Automatic control device and control method for multiple overlapping type compressor unit
08/27/2008CN100414108C Fully closed compressor with dented thermal protector assembling structure
08/20/2008EP1957753A1 Rotary motor with intermittent movements of the rotors
08/20/2008CN101248278A Closed compressor and refrigerating cycle apparatus
08/20/2008CN101245781A Micro-whirlpool type tire inflation compressor
08/20/2008CN100412375C By-pass valve assembly of rotary and capacity-variable compressor
08/20/2008CN100412374C Device for preventing vacuum in vortex type compressor
08/19/2008US7412842 Compressor diagnostic and protection system
08/14/2008WO2008096578A1 Rotary compressor
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