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Matches 1 - 50 out of 27,528

Document Document Title
WO/2019/094922A1
Power systems and methods of controlling an engine driven air compressor include an air compressor driven by an engine via a clutch. A first pressure sensor configured to sense a pressure level at an outlet of the air compressor. An inle...  
WO/2019/092122A1
This invention discloses a method for determining a current wear (w) of a hydrostatic pump (11), particularly of a radial piston pump, with a variable-speed drive (12), where the pump (11) is connected to a fluid passage (31, 32), in whi...  
WO/2019/093007A1
The present invention provides an air compressor in which a load torque upon starting is decreased. The compressor (1) is provided with: a compressor body (2); an electric motor (6) which drives the body (2); and a current supply circuit...  
WO/2019/090388A1
A system (3) for pumping fluid, including a sequence of two or more positive- displacement sub-systems (15A, 17A; 15B, 17B; 15C, 17C; 15D, 17D) each having a respective one-way inlet (21A, 21B, 21C, 21D). A respective one-way flow path (...  
WO/2019/085002A1
An intelligent water pump controller based on the Internet of things is provided with a microprocessor (1), and a water pump control circuit (2), a relay control circuit (3) and a keying control circuit (4) that are connected to the micr...  
WO/2019/086671A1
The invention relates to a system for pumping a compressible liquid, comprising at least two pumps, a first pump (10) and a second pump (20), of which the respective pump outlet lines (12, 22) are led together into a connecting piece (36...  
WO/2019/084620A1
A pump including one or more pumping chambers, one or more drive mechanisms for driving the one or more pumping chambers and a logic arrangement. The first pumping chamber of the one or more pumping chambers has a first inlet check valve...  
WO/2019/085155A1
A high-precision peristaltic pump flow rate control system, comprising a motor, a peristaltic pump, a rotational speed feedback assembly, a flow rate feedback assembly, and a controller. The motor is correspondingly connected to the peri...  
WO/2019/081113A1
The invention refers to a governor device (1) for controlling a compressor in a pressurized air system, said governor device (1) comprising: - a supply port (21) for receiving a supply pressure (p21), - a control port (20) for delivering...  
WO/2019/074251A1
The present specification relates to an apparatus for controlling a linear compressor and a method for controlling same, more specifically to an apparatus and a method for controlling a linear compressor in which the linear compressor is...  
WO/2019/070544A1
A universal monitoring system applicable to a variety of hydraulic fracturing equipment includes an accelerometer mounted on a housing of a positive displacement pump and configured to sense a vibration associated with the positive displ...  
WO/2019/071086A1
Embodiments include a method for monitoring a fracturing operation that includes positioning a pump (50) at a well site (12) where fracturing operations are being conducted. The method also includes arranging one or more sensors (34, 36)...  
WO/2019/068762A1
The present invention relates to a hydraulic system (1), wherein the system comprises a hydraulic device (10), a hydraulic pump (20) in fluid connection with the pressure chamber of the hydraulic device, an electric motor (30) arranged t...  
WO/2019/067816A1
Embodiments of apparatus for controlling the movement of matter, including but not limited to one-way fluid valves, are disclosed. The apparatus may include a transition nozzle, a funnel nozzle, and a reverse flow blocker arranged in ser...  
WO/2019/066127A1
The present invention relates to a method of controlling an air dehumidifier using a phase change material, and more particularly, to a method of controlling an air dehumidifier using a phase change material, wherein the phase change mat...  
WO/2019/066286A1
The present invention relates to a device for supplying lubricating oil having a structure in which a valve receives centrifugal force and thus receives force in the opening direction of a bypass hole, and a spring presses the valve in t...  
WO/2019/060227A1
A method includes receiving field measurement data of a plurality of well-pumps disposed respectively in a plurality of wells. The field measurement data are representative of speed data and run-time data, of the plurality of well-pumps....  
WO/2019/057276A1
The invention relates to a high-pressure cleaning device (10; 50) comprising an electric motor (12; 52) and a pump (14; 54) driven by the electric motor (12; 52), said pump having a pump inlet (16) for supplying cleaning liquid to be pre...  
WO/2019/060871A1
A high pressure threshold detection circuit (100) is provided. The high pressure threshold detection circuit includes a pressure transducer (110) for measuring a pressure of a medium at an outlet (104) of a compressor (102). The high pre...  
WO/2019/058221A1
A reciprocating compressor (1 ) comprises a cylinder (2), a piston (3), an intake duct (4), defining an intake space (4A), a discharge duct (6) defining a discharge space (6A), an intake valve (8) disposed in the intake duct (4), a disch...  
WO/2019/053513A1
A pumpjack monitor includes a processor and memory, a communicator for communicating with other monitors and a server, a sensor module having at least a strain gauge and accelerometers for determining vibration and position of the monito...  
WO/2019/051547A1
The present invention relates to the modulation of the flow rate of a body of water pumped through a conduit by a fixed speed pump. Pump control devices may comprise a drive converter to alter the operation of a pump drive driving the fi...  
WO/2019/049987A1
The present invention relates to a compressed gas supply device capable of supplying a compressed gas discharged from a plurality of compressors. The device is provided with a plurality of compressors disposed in parallel, a load factor ...  
WO/2019/049415A1
Provided is an oil feed type air compressor with which it is possible to reduce the power consumption of a compressor main body during no-load operation. This oil feed type air compressor is provided with: a compressor main body (1) whic...  
WO/2019/049620A1
A control device for a compressor is provided with an operation stop control unit that, upon detecting a forced stop request signal from a device including the compressor, said signal being different from a normal stop request signal tha...  
WO/2019/049603A1
This hydraulic working machine independently drives left-right travel hydraulic motors by two hydraulic pumps, and is capable of detecting abnormalities in left-right travel devices with high accuracy. The present invention comprises: a ...  
WO/2019/049622A1
A current value determination device provided with: a capacitor current computation unit for computing the capacitor current of a capacitor included in a high-voltage circuit that drives a motor, on the basis of the input voltage of an i...  
WO/2019/049909A1
The braking device for vehicles comprises a reduction amount setting part 62 for setting the amount by which to reduce the revolution of a pump motor M during maintenance or reduction of controllable differential pressure so that said re...  
WO/2019/044756A1
This control device performs, when performing, in a state in which the rotational speed (N) of an electric motor driving an electric oil pump is a first rotational speed (N1), a specific control that causes a state change in a hydraulic ...  
WO/2019/044553A1
The purpose of the present invention is to make a contract of operation data transaction conveniently and concretely. This fluid machine includes: a driving source; a fluid machine body which generates a fluid by means of driving power o...  
WO/2019/038457A1
The present invention relates to a liquid metering device (1) for metering pumps, formed by a main longitudinal conduit (2) with first and second opposite ends (2.1, 2.2) comprising: a fluid inlet (3) at the first end (2.1), disposed per...  
WO/2019/034317A1
A control device (100) for a motor (210) for a hydraulic system (200) is provided. The control device comprises at least one first sensor (120, 130) for measuring a pump pressure of the hydraulic system and a load pressure of 5 the hydra...  
WO/2019/035891A1
Control systems and feedback assemblies for hydraulic axial displacement machines, such as pumps and motors. The control systems and feedback assemblies can reduce friction on the charging spools and provide for a more reliable return of...  
WO/2019/024428A1
A reversing valve for a hydraulic piston pump, which is composed of a pilot valve (10) and a main valve (20); the pilot valve (10) comprises a pilot valve seat (13), a hollow valve core (12), and a slide shaft (17); the main valve (20) c...  
WO/2019/024540A1
An energy-saving flow regulation device, comprising a tube body (1), at least one blade (2) provided in the tube body (1), and an energy conversion mechanism (4) in transmission connection with the blade (2); the angle and/or length of t...  
WO/2019/025478A1
The invention relates to a method (100) for regulating the output pressure (POUT) of a hydraulic drive system (10) with the use of a rotational speed (ω) as an actuating variable, wherein the hydraulic drive system (10) has a hydraulic ...  
WO/2019/026892A1
This hydraulic drive device is provided with: an electric motor; a variable capacity pump which is driven by the electric motor and which has a pair of pump ports of which a discharge side and a suction side switch in accordance with the...  
WO/2019/028267A1
A control unit includes a first connector configured to connect a proportional pressure regulator to a positive pressure supply and a second connector configured to connect the proportional pressure regulator to a negative pressure suppl...  
WO/2019/022252A1
A fault diagnosis device, which diagnoses faults in a swash plate pump, comprises: a history acquisition unit that, on the basis of an intake flow rate detected by a flow rate calculation unit, acquires actual history data indicating the...  
WO/2019/021450A1
This air conditioner (500) is provided with: a converter (102) which generates a bus voltage to be applied to a coil (3); a connection switching unit (60) which switches the connection state of the coil (3); a signal reception unit (56) ...  
WO/2019/021475A1
This liquid feeding device is provided with an ejection flow passage, a pump part, a liquid feeding pressure sensor, a non-ejection time pressure sensor, a precompression unit, and a precompression-speed determination unit. The pump part...  
WO/2019/019154A1
Disclosed is a diaphragm pump, comprising an electric motor (11), a diaphragm pump housing (12), and a transmission member (13), a metal diaphragm (14), a water inlet one-way valve (15) and a water outlet one-way valve (16) arranged in t...  
WO/2019/011384A1
A high-pressure compressor (2) comprises a hydraulic system and a gas chamber (14). The hydraulic system comprises a reservoir (11) connected to a hydraulic fluid chamber (23) by a hydraulic flow path (41) and a pump assembly (30) positi...  
WO/2019/013686A1
In a method for providing an estimated value of a possible leakage on a suction side of a piston displacement pump (1) pumping a liquid the maximum attainable outlet pressure of the pump is measured while driving the pump. The ratio of a...  
WO/2019/011385A1
Method of controlling the injection of hydraulic fluid into a high pressure diaphragm compressor comprising a hydraulic system, the method comprising: measuring a representation of pressure in a high- pressure part of the hydraulic syste...  
WO/2019/011496A1
The invention relates to a method for the weight-dependent control of the internal pressure of a support body loaded by a weight load or support load, wherein the internal pressure is produced by means of an electric motor-driven compres...  
WO/2019/011386A1
The invention relates to a pressure sensor comprising a housing connected to a compressor head, the housing comprising a piston movably mounted in a cylinder, the cylinder is fluidly connected to a high-pressure part of a hydraulic syste...  
WO/2019/009266A1
[Problem] The purpose of the present invention is to provide a capacity control valve, for controlling the flow rate or pressure of a variable capacity compressor in accordance with the degree of opening of a valve unit, that improves th...  
WO/2019/007992A1
The invention relates to a pumping system for producing a volume flow of dialysis solution in a dialysis machine, the pumping system comprising at least one piston pump, the piston of which co-operates with a working fluid which in turn ...  
WO/2019/008451A1
The present invention is directed to a minimum pressure valve comprising a housing (13) with a. valve inlet (11) and a valve outlet (12) which are connected by means of a chamber (16), said minimum pressure valve (105 further comprising ...  

Matches 1 - 50 out of 27,528