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Patent Searching and Data


Matches 1 - 50 out of 27,715

Document Document Title
WO/2019/206456A1
To provide the high accuracy calibration of a pump control table when the capacity variable control of a hydraulic pump is configured to be conducted based on a pump control table representing the relationship between the pump capacity a...  
WO/2019/206757A1
A piston hydraulic device is disclosed. The device comprises a cylinder block having a plurality of cylinder assemblies. The cylinder block being rotatable about a first rotation axis wherein each cylinder assembly comprises a cylinder a...  
WO/2019/208606A1
[Problem] To accurately control the ejection of chemicals and increase the safety of the ejection of the chemicals in an agricultural machine for spraying the chemicals. [Solution] This system, which is for controlling the ejection of ch...  
WO/2019/210257A1
A well service pump system supplies high pressure working fluid to a well. The pump system has a linear design which incorporates an electric motor (212), a variable frequency drive (VFD) (216), a pump drive (220), closed loop variable f...  
WO/2019/205757A1
A linear compressor sine wave control method, comprising a dynamic control mode, and comprising: during a mover of a linear compressor reciprocating between endpoint positions BDC and TDC, in a sine wave driving cycle, when the mover is ...  
WO/2019/210260A1
A well service pump system (10) supplies high pressure working fluid to a well. The pump system (10) includes: three or more working fluid pump assemblies (34), each comprising a working fluid end cylinder (46) having a plunger rod (50) ...  
WO/2019/201665A1
A piston hydraulic device comprises a cylinder block having a plurality of cylinder assemblies and is rotatable about a first rotation axis. Each cylinder assembly comprises a cylinder and a piston. A port plate having a first port and a...  
WO/2019/201574A1
The invention relates to a swash plate-type axial piston pump, in particular for hydraulic systems, comprising a cylinder drum (3) which is rotated about a rotational axis (7) in a pump housing (1) and in which pistons (9) are arranged i...  
WO/2019/198305A1
This fluid control device (10) is provided with a piezoelectric pump (21), a piezoelectric pump (22), a valve (30), and a container (40). The piezoelectric pump (21) and the piezoelectric pump (22) repeatedly operate and stop according t...  
WO/2019/193920A1
[Problem] To improve safety after a vehicle collision. [Solution] The present invention comprises: a compressor 11 that is mounted in a vehicle and that is driven by a built-in electric motor; a control circuit 55 that is provided to the...  
WO/2019/194942A1
Systems and method for operating a gas compressor (100) are disclosed herein. A compressor can have one or more dry gas seals (220, 222, 230, 232) surrounding the central axle of the compressor. The dry gas seals can each be pressurized ...  
WO/2019/187526A1
Provided is a control device that performs protection control of a compressor without malfunction. The control device activates protection control on a compressor that has a refrigerant circuit on the basis of a pressure value detected b...  
WO/2019/188762A1
Provided is a piston compressor configured so that loss in discharge pressure can be suppressed, a structure can be simplified, and the piston compressor can realize an air conditioning device capable of exhibiting excellent control perf...  
WO/2019/186861A1
The present invention achieves a power reduction effect while keeping a following property with respect to a pressure variation. Provided is a gas compressor having: a compressor main body for inhaling gas and exhaling compressed gas; a ...  
WO/2019/190376A1
A fluid system comprises a pump (7) for feeding fuel to at least one injector (3), a conduit (8) connecting the pump to the injector and an electronic pressure regulator (9) controlling the pump. A control unit (10) controls the pump to ...  
WO/2019/186288A1
The invention describes a valve unit (125) for pumps (100) comprising: a first chamber (130) communicating with an inlet conduit (135) and with a discharge conduit (215), a second chamber (140) communicating with the first chamber (130) ...  
WO/2019/180003A1
The present invention provides a method for analyzing, monitoring, optimizing and/or comparing energy used for producing a unit of mass or volume of compressed gas (Specific Energy Consumption) in relation to a common output flow in a mu...  
WO/2019/179997A1
The present invention describes a method for gauging energy used for producing a unit of mass or volume of compressed gas (Specific Energy Consumption) in relation to a common output flow in a multiple compressor system, said method comp...  
WO/2019/183383A1
Non-limiting exemplary embodiments of a pumping system and methods for operating the pumping system in a region of high pressure or a region of high flow are disclosed. The pumping system includes a piston disposed within a piston cylind...  
WO/2019/183407A1
Embodiments are disclosed for the control of downhole pumping systems that can perform a controlled draining operation of the downhole pumping system in the event of an interruption of a drive. Such embodiments include a zero power facto...  
WO/2019/176513A1
Provided is a cooling device capable of surely stopping the operation of a compressor when stopping the operation of the compressor is required. A cooling device (1) comprises: a motor (17) for driving a compressor (15) that constitutes ...  
WO/2019/170553A1
The invention relates to a drive device for a diaphragm fluid pump, comprising: a service pump, the service pump being connected to the diaphragm fluid pump by means of a pressure line in order to drive the diaphragm fluid pump, and the ...  
WO/2019/170770A1
The invention relates to an assembly (3), comprising a high-pressure pump (5) and a control device (7) arranged upstream of the high-pressure pump, the assembly (3) having a fuel channel (29), which is formed between an inflow side of th...  
WO/2019/172008A1
An air conditioner (100) serving as a refrigeration cycle device includes a protection device (200). If the current value of an input current of an electric motor of a compressor (103) exceeds a first prescribed value set to at least thr...  
WO/2019/170255A1
The invention relates to a control method for a high-pressure cleaning appliance (10) having a pump (16), an electric motor (14) and a control device (18). In order to easily adjust the speed of the electric motor (14) when a nozzle (30)...  
WO/2019/169366A1
A suction cover assembly for a frac pump includes a suction cover having an annular base flange defining a sealing interface proximate to the base flange. The suction cover is dimensioned to be accommodated within a bore well of a fluid ...  
WO/2019/166955A1
Vibration pump comprising: a core (2) at least partially made of ferromagnetic material; a solenoid (4) for actuating the core (2); a cylinder (6) comprising a work chamber (7) in which the core (2) can slide; an inlet duct (8) and an ou...  
WO/2019/169176A1
Fluid charging system (1) can provide a higher inlet pressure than the ambient pressure for pumps intended to operated and comprises one or more subsea fluid reservoirs (10); charge pump (30) configured to provide an output pressure high...  
WO/2019/166326A1
The invention relates to a system, comprising a refrigerant compressor and an electronic control device (13) for the refrigerant compressor (1). The refrigerant compressor (1) at least comprises a drive unit (16) and a compression mechan...  
WO/2019/162795A1
Device for monitoring the quality of the compressed air in a supply line and calibrating a measuring device for measuring a specific type (A, B, C) of impurity in the compressed air, whereby the device is provided with: - a measuring lin...  
WO/2019/162872A1
Method for actuating a compressor system (1) in order to set a measured operating pressure (pw), which serves as a measure for the operating pressure (p) that the compressor system (1) supplies to a user network (14) at a flow rate (Q) d...  
WO/2019/158320A1
The present disclosure relates to a pump system (1) with a first (3) of at least one pump unit (3, 5) for pumping a fluid (11), wherein the first pump unit (3) comprises a pump, an electrical drive motor and a motor control, with a pump ...  
WO/2019/154494A1
The invention relates to a method for controlling a high-pressure cleaning appliance (10) comprising an electric motor (16), a high-pressure pump (20) driven by the electric motor (16), and a control device (30). The aim of the invention...  
WO/2019/154092A1
A stroke estimation method for a linear compressor. The linear compressor comprises a linear motor. The linear motor comprises a coil used for driving a rotor (3) to move linearly. The method comprises the following steps: obtaining coun...  
WO/2019/155272A1
Unloader for a compressor, said unloader (1) comprising a housing (2) with an inlet (3) and an outlet (4), and whereby the unloader (1) is further provided with a piston rod (5) which is arranged moveably in a reciprocating manner in the...  
WO/2019/155737A1
A control device comprising: a prediction unit for predicting a startup-possible time, which is the time until a compressor is capable of operating, on the basis of an outside temperature and a degree of dilution of refrigerant oil in th...  
WO/2019/151062A1
Provided is a liquid chromatograph in which a solvent can be quickly replaced in a liquid delivery pump. The liquid chromatograph is provided with a liquid delivery pump 1 that takes in and discharges a solvent, and the liquid delivery p...  
WO/2019/152140A1
A negative pressure wound therapy device includes a piezoelectric pump, a state detector configured to detect a state of the pump, and a control circuit configured to transmit a first control signal for a first period having a first RMS ...  
WO/2019/152359A1
An integrated, portable, battery-powered, variable-pressure electric liquid pump and power emergency station comprising a chassis; one or more wheels supporting the chassis; an electrically powered, variable-pressure liquid pump carried ...  
WO/2019/146965A1
The present invention relates to a control device for controlling the operation of a compressor, an electronic control valve used for the same, and a compressor comprising the same. Provided is a control device of a compressor, comprisin...  
WO/2019/147603A1
Changing a cumulative pumping rate of multiple pump units by adjusting individual pumping rates of the pump units, wherein each temporary dip or spike of an individual pumping rate of one of the pump units is automatically offset by a pr...  
WO/2019/142840A1
Provided is an air pressure system that controls an air compressor in real time for a plurality of terminals in accordance with the actual manner in which compressed air is used. Furthermore, when there is a sudden change in pressure los...  
WO/2019/141020A1
A vacuum pump automatic power-off device and a vacuum mixer; the vacuum pump automatic power-off device comprises: a vacuumizing device (1) and a metal probe (23); the vacuumizing device (1) comprises a shell (2), a vacuum valve seat (3)...  
WO/2019/141489A1
There is disclosed a peristaltic rotor unit (100) comprising a housing (102); a track (104) within the housing defining a pathway for a tube (2); a rotor (106) within the housing configured to compress a tube received along the pathway a...  
WO/2019/138502A1
This scroll compressor (S) is provided with: a compression mechanism portion (3) comprising a plurality of compression chambers (51) formed by an orbiting scroll (11) and a fixed scroll (12); a bypass port (41) providing communication be...  
WO/2019/136554A1
A monitoring and control apparatus communicates with an electrical drive of a subsurface artificial lift system to identify, predict and mitigate against failure of the artificial lift system. A monitoring and control apparatus: reads to...  
WO/2019/139132A1
A variable capacity compressor in which: when the pressure of a passage that is upstream of a switching valve 400 that is provided downstream of a control valve that adjusts the aperture of a supply passage that supplies refrigerant that...  
WO/2019/135900A1
A negative pressure wound therapy device includes at least one piezoelectric pump and a control circuit. The control circuit is configured to generate a first control signal to control operation of the at least one piezoelectric pump, th...  
WO/2019/127983A1
A water storage system control device and apparatus. The control device comprises a single-chip microcomputer (1), a ZigBee coordinator (2), a first ZigBee wireless transceiver (131), a first frequency converter (3), a water pump motor (...  
WO/2019/132953A1
A pump monitoring system for use in wellbore operations includes a strain gauge that can be positioned on a fluid end of a pump and at least one pressure transducer to measure relative pressure. A computing device can be connected to the...  

Matches 1 - 50 out of 27,715