Class / Patent application number | Description | Number of patent applications / Date published |
417228000 | WITH CONDITION RESPONSIVE CONTROL OF COOLANT OR LUBRICANT | 28 |
20090074592 | Compressor and method for operating the same - A compressor comprises a suction passage; an oil reservoir for storing a lubricating oil which is separated from a refrigerant gas having a discharge pressure; and a throttle valve provided in the suction passage and having a valve body for adjusting an opening degree of the suction passage based on a differential pressure applied to the valve body. The suction passage has an upstream suction passage which is located upstream of the throttle valve. The compressor comprises a lubricating oil passage connecting the oil reservoir to the upstream suction passage for the lubricating oil in the oil reservoir to flow to the upstream suction passage therethrough. | 03-19-2009 |
20090087320 | OIL-COOLED AIR COMPRESSOR - In an oil-cooled air compressor for controlling a temperature of a lubricant by changing a flow rate of a cooling medium supplied to a heat exchanger for the lubricant, for obtaining an energy saving effect by variable control of the flow rate of the cooling medium and preventing securely a condensed water from occurring in a compressor unit even when an exhaust duct is arranged inappropriately, a lubricant flow rate adjustor is arranged to measure a temperature of the lubricant and decreasing a flow rate of the lubricant supplied to the heat exchanger so that the lubricant temperature becomes T | 04-02-2009 |
20090148310 | WORKING FLUID COOLING CONTROL SYSTEM FOR CONSTRUCTION MACHINE - A working fluid cooling control system has a controller | 06-11-2009 |
20100196170 | SYSTEM AND METHOD FOR MONITORING AND CONTROLLING OIL RETURN TO COMPRESSOR - A system and method for monitoring and controlling oil return to a compressor, characterized by monitoring and controlling oil level, oil temperature, and compressor outlet pressure, so as to determine whether the oil level is lower than a predetermined level threshold, whether the temperature in the lubricating oil box is lower than a predetermined temperature threshold, and whether the compressor outlet pressure exceeds a predetermined pressure threshold, so as to control the flow of lubricating oil returned to the oil box by controlling the valve opening of the oil return valve according to a non-segmentation principle or a segmentation principle, ensure sufficient lubricating oil in the oil box, and enhance efficiency of the system. | 08-05-2010 |
20100247336 | TURBOMOLECULAR PUMP - The provision of the components requiring cooling on top of the cooling mechanism enables the cooling efficiency to be increased. Furthermore, a case of a control device is attached to the cooling mechanism whereon the components requiring cooling are disposed. The cooling mechanism fulfills the role of the contact surface of the case of the control device with the turbomolecular pump main unit, where the case does not have a case panel on the contact surface with the turbomolecular pump main unit. The cooling mechanism fulfills the role of one surface of the case for the control device, where the cooling mechanism is structured integrally with the control device. Additionally, the turbomolecular pump main unit, the cooling mechanism, and the control device are structured integrally by the turbomolecular pump main unit and the cooling mechanism being in contact. | 09-30-2010 |
20100303644 | VACUUM PUMP - A condensation sensor is provided within a power supply device that is provided integratedly with a vacuum pump main unit. When the condensation sensor detects condensation within the power supply device, a CPU closes a cooling water valve. This stops the flow of cooling water that flows through the interior of the power supply device, through a cooling water duct. | 12-02-2010 |
20110008184 | COMPRESSOR UNIT - A compressor unit is provided. The compressor unit includes a compressor and a motor enclosed by a common casing in a sealless manner. A stator of the motor is cooled by a cooling system. A partition separates a process fluid from a cooling fluid in an area of the stator. Further, a relation between a process fluid pressure and a cooling fluid pressure is established by using a pressure compensator. | 01-13-2011 |
20110129362 | WATER-INJECTION TYPE SCROLL AIR COMPRESSOR - Disclosed is a water-injection type scroll air compressor whose pre-stopping operation time for drying can be reduced while enhancing compressor efficiency. The compressor body | 06-02-2011 |
20110268589 | PUMP ASSEMBLY - A pump assembly includes a pump housing ( | 11-03-2011 |
20120315158 | Method for intelligent control of a compressor system with heat recovery - The invention relates to a control for heat recovery (WRG) in a compressor system with liquid injection comprising a fluid circuit of the fluid which is to be injected with control valve, this fluid passing through at least one heat exchanger with control valve to the WRG and upstream of the compressor ( | 12-13-2012 |
20120321486 | COMPRESSOR SYSTEM INCLUDING A FLOW AND TEMPERATURE CONTROL DEVICE - A compressor system including a gas and a lubricant inlet. The compressor compresses a gas and discharges a mixed flow of compressed gas and lubricant. A valve housing includes a hot and a cooled lubricant inlet, and a lubricant outlet connected to the hot and cooled lubricant inlets. A sleeve is disposed within the valve housing and is movable between a first and a second position. The sleeve defines a mixing chamber and includes a first aperture with the hot lubricant inlet and a second aperture with the cooled lubricant inlet. The hot and cooled lubricant mix in the mixing chamber are directed to the lubricant inlet of the compressor. A thermal element is positioned to sense a temperature and moves the sleeve in response. The movement of the sleeve varys the amount of hot lubricant admitted through the first aperture and varys the amount of cooled lubricant admitted through the second aperture to control a lubricant temperature. | 12-20-2012 |
20130101443 | Variable Capacity Compressor - Lubricating performance and durability of a variable capacity compressor are secured. A first communication hole | 04-25-2013 |
20130230415 | RECIPROCATING COMPRESSOR WITH HIGH FREEZING EFFECT - A reciprocating compressor ( | 09-05-2013 |
20130251548 | COMPRESSOR - A compressor includes a housing, compression unit, discharge chamber, outlet, and oil separation structure. The oil separation structure, which is arranged between the discharge chamber and the outlet, includes an oil reservoir, oil separation compartment, intake passage, exhaust passage, and supply passage. The oil separation compartment is located upward from the oil reservoir. The intake passage, which extends upward from the oil separation compartment, draws refrigerant gas into the oil separation compartment from the discharge chamber to separate lubrication oil from the refrigerant gas. The exhaust passage extends upward from the oil separation compartment and discharges the refrigerant gas in the oil separation compartment out of the housing through the outlet. The supply passage extends upward from the oil separation compartment and has a larger cross-sectional area than the intake passage. The supply passage supplies the oil reservoir with lubrication oil from the oil separation compartment. | 09-26-2013 |
20140056726 | Cooling Stator Windings of an Electric Machine - In an electric machine, there may be lubrication and cooling needs, such as lubricating bearings and cooling coils of the electric machine. When lubricant is used for both, it is desirable to prioritize the lubrication to the bearings. By providing check valves between a pressurized oil manifold and the cooling coils, lubricant is diverted to the coils only when pressure in the system is sufficient to satisfy both lubrication and cooling. In some embodiments, an oil gallery is provided on an outside surface of a back iron of the stator of the electric machine and orifices are provided in the back iron so that oil drips onto the coils of the electric motor. In some embodiments, the current commanded to the electric motor is based on whether or not lubricant (or other coolant) is being provided to the coils. | 02-27-2014 |
20140056727 | Refrigerant Compressor and Refrigeration Cycle Apparatus Using the Same - A refrigerant compressor includes a sealed case | 02-27-2014 |
20140147299 | COMPENSATED BARRIER AND LUBRICATION FLUIDS PRESSURE REGULATION SYSTEM FOR A SUBSEA MOTOR AND PUMP MODULE - A compensated barrier and lubrication fluids pressure regulation system for a subsea motor and pump module is disclosed. The system comprises a hydraulic fluid supply, a barrier fluid circuit, and a lubrication fluid circuit. Hydraulic fluid in the barrier fluid circuit is pre-tensioned towards a motor by a first separating pressure compensator which is responsive to the pressure in the lubrication fluid circuit and which applies the sum of the pressure in the lubrication fluid circuit and an inherent pre-tensioning pressure to the barrier fluid circuit. Hydraulic fluid in the lubrication fluid circuit is pre-tensioned towards a pump by a second separating pressure compensator which is responsive to a pumped medium pressure at a suction side or at a discharge side of the pump and which applies the sum of the pumped medium pressure and an inherent pre-tensioning pressure to the lubrication fluid circuit. | 05-29-2014 |
20140154105 | OIL BALANCING APPARATUS AND REFRIGERATION DEVICE - Embodiments of the present invention provides an oil balancing apparatus, applied to at least three compressors connected in parallel. The oil balancing apparatus includes a first oil balancing pipe and a second oil balancing pipe. The first oil balancing pipe connects oil sumps of all the compressors, and the second oil balancing pipe only connects oil sumps of oil-rich compressors but not an oil sump of an oil-starved compressor. | 06-05-2014 |
20140334949 | LABYRINTHINE RADIAL PISTON-HYDRAULIC VARIABLE WATERPUMP ACTUATION SYSTEM - A regulatable coolant pump of an internal combustion engine having a pump housing in which a pump shaft with an associated impeller is rotatably mounted. The impeller conveys a coolant from an inlet connection into an outlet of the coolant pump, a volume flow of the coolant pump being adjustable by a cover that externally surrounds the impeller at least in some regions and is displaceable by a pressure medium. The cover is moved by an actuator including a solenoid in contact with a piston that is moveable into a piston pressure chamber in order to generate high pressure pulses of a pressure medium that are transmitted to a plunger chamber where they act on a plunger connected to the cover. Upon actuation of the solenoid, the cover is moved by the pressure medium acting on the plunger to an actuated end position. | 11-13-2014 |
20150010410 | Control Valve For A Variable Displacement Compressor - In a control valve, the spring load of a spring, which biases a main valve element in a valve opening direction, is regulated, for instance. This allows a range of suction pressures Ps, where a main valve and a sub-valve are simultaneously closed until a sub-valve element is lifted from a sub-valve seat after a main valve element has been seated on a main valve seat, to be set as a deadband. The control valve is configured such that the value of a suction pressure Ps with which to open the sub-valve after the closing of the main valve and the pressure values at which the deadband takes place are set variably by the setting of a value of current supplied to the solenoid. | 01-08-2015 |
20150044070 | Oil Balancing Apparatus and Refrigeration System With Oil Balancing Apparatus - An oil balancing apparatus is for use with a first compressor and at least two second compressors. Suction pipes of the first compressor and the second compressors are connected in parallel to a suction main pipe and discharge pipes of the first compressor and the second compressors are connected in parallel to a discharge main pipe. The first compressor is in an operating state, and the second compressors are operated intermittently. The oil balancing apparatus includes a first oil balancing pipe connecting oil sumps of the second compressors in series, and a second oil balancing pipe connecting an oil sump of the first compressor to a bottom of the first oil balancing pipe. A refrigeration system is also disclosed. | 02-12-2015 |
20150078924 | Fracturing Pump - The invention discloses a fracturing pump, comprising a cooling device and a control device, wherein a motor is connected on an shaft of the fracturing pump, the cooling device comprises an air-cooled device for cooling a rotor of the motor and a water-cooled device for cooling a stator of the motor, and the control device is connected with the motor and the cooling device, respectively. The fracturing pump in the invention adopts a structure directly driven by the motor, thus breaking the form of a transmission structure of a diesel engine of the conventional fracturing pump added with a transmission tank, simplifying the structure of the entire fracturing pump, reducing the apparatus mounted on a fracturing car, decreasing failure rate of the apparatus, and becoming more safe and reliable. | 03-19-2015 |
20150078925 | RECIPROCATING COMPRESSOR - A reciprocating compressor is provided. The reciprocating compressor may include a cylinder having a compression space, a piston inserted into the cylinder to define the compression space while being reciprocated, the piston having a suction passage to communicate with the compression space, a gas bearing having at least one bearing hole that passes through the cylinder, so that a refrigerant gas may be injected between the cylinder and the piston to support the piston with respect to the cylinder, and a flow resister disposed at an outer circumferential surface of the cylinder or at one side of the cylinder to restrict a flow of the refrigerant gas flowing through or toward the at least one bearing hole. | 03-19-2015 |
20150086392 | DRY RUNNING COMPRESSOR FOR CREATING COMPRESSED AIR - A dry running gas compressor has at least a first compression unit with a housing and a first working chamber in which gas is compressed. A hollow of said first working chamber is in said housing. A closed cooling liquid circuit is adapted for cooling the first working chamber of the first compression unit. The compression unit has at least one lubricant channel through which lubricant is guided to a bearing or gearbox or other component of the first compression unit. The lubricant channel is part of a lubricant circuit. The lubricant circuit is effectively fluidly separated from the cooling circuit. | 03-26-2015 |
20150110647 | COMPRESSORS - Disclosed compressor embodiments can prevent or substantially reduce the inefficient upwardly spiraling heat buildup found in typical compressors by significantly increasing the surface area of mating piston and chamber walls, using the meshing and undulating geometry of the piston/chamber walls to create increased air turbulence in the chamber and generate more air flow against the cooling walls, promoting turbulence even more by varying the axial path of the piston head so that it is not simply linear, using fluid to cool the non-working side of the piston, and/or providing additional cooling features (such as fins) on the non-working side of the piston to provide still further cooling means for the piston head. Analogous principles can also be included in wobble-plate compressors, scroll compressors, blowers, and other compressor types. | 04-23-2015 |
20150147197 | APPARATUS FOR CIRCULATING COOLANT IN TURBOCHARGER - An apparatus circulates a coolant in a turbocharger, which includes a first coolant line for supplying the coolant to the turbocharger from a water pump and configured to form a first flow resistance member to increase flow resistance to the coolant flowing through the first coolant line. | 05-28-2015 |
20150377098 | CONTROL DEVICE FOR OIL PUMP - A control device for a variable-capacity oil pump provided in an engine using alcohol-containing fuel includes an electronic control unit. The electronic control unit is configured to: (i) estimate an alcohol concentration in oil of the engine, and (ii) correct a capacity of the oil pump to be increased in a correction condition as compared with a case where the correction condition is not established when the correction condition is established. The correction condition is that an estimated alcohol concentration is a predetermined concentration or more and a temperature of the oil is a predetermined temperature or more. | 12-31-2015 |
20160186737 | HERMETIC ELECTRICAL FEEDTHROUGH ASSEMBLY FOR A COMPRESSOR - An electrical feedthrough assembly for providing connection to components of a compressor includes a housing having an inner surface defining a channel. A sealed wire assembly is provided in the channel. The sealed wire assembly includes a body having an outer surface and a plurality of wires sealingly passing through the body. | 06-30-2016 |