| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 418083000 | HEAT EXCHANGE OR NON-WORKING FLUID LUBRICATING OR SEALING | 82 |
| 20080240962 | Gas Vane Pump, and Method of Operating the Pump - A gas vane pump wherein a lubricant is intermittently introduced into a housing | 10-02-2008 |
| 20090104062 | COMPRESSOR - There is provided a compressor capable of feeding lubricating oil to a blade of a rotary type compression mechanism even if the oil level in an oil reservoir lowers. The compressor | 04-23-2009 |
| 20090162231 | SCROLL COMPRESSOR - A scroll compressor including a block, a fixed scroll, an orbiting scroll, a crankshaft, an Oldham ring and an oil passage is provided, wherein the fixed scroll is fixed on the block, and the orbiting scroll, the crankshaft and the Oldham ring are disposed on the block. The fixed scroll and the orbiting scroll form a gas-in area, a compressing area and a gas-out area which are connected in a series. The orbiting scroll is eccentric connected with the crankshaft to orbit over the fixed scroll and drive the Oldham ring moving. A reciprocating motion area on the block is formed via the reciprocating motion between the block and the Oldham ring, wherein the block has an oil opening in the reciprocating motion area. Besides, one terminal of the oil passage is connected to the oil opening, and another terminal of the oil passage is connected to the gas-in area and the compressing area. | 06-25-2009 |
| 20090191082 | SCREW COMPRESSOR - A screw compressor is disclosed wherein a pair of rotor shafts are disposed horizontally and an oil sump is formed at the bottom of a bearing casing which accommodates bearings for supporting the rotor shafts, a bearing lower portion being soaked into oil present in the oil sump for lubrication. The screw compressor comprises a chamber provided separately from the bearing casing, an oil line for communication between the oil sump in the bearing casing and the chamber and oil level detecting means disposed in the chamber. According to this structure, the oil level in the bearing casing can be checked accurately and there is no fear of oil shortage in the bearings. | 07-30-2009 |
| 20090263265 | Compressor Unit - The invention relates to a compressor unit, in particular for underwater operations, comprising a compressor with a rotational axis and an electric motor. Said compressor unit has a housing with an automation unit for control and regulation tasks. The aim of the invention is to improve the co-operation of the automation unit and the compressor unit and in particular to reduce the complexity of the cooling of the automation unit and signal and energy transmission. To achieve this, an additional housing, which contains the automation unit, is attached to the housing. | 10-22-2009 |
| 20090297382 | EXPANDER AND EXPANDER-COMPRESSOR UNIT - The expander-compressor unit | 12-03-2009 |
| 20100008810 | LUBRICANT COMPOSITION FOR ROTARY GAS COMPRESSOR AND ROTARY GAS COMPRESSOR FILLED WITH THE SAME - A lubricating oil composition for a rotary gas compressor has a kinematic viscosity of 5 mm | 01-14-2010 |
| 20100028187 | SUPPLEMENT LUBRICANT FREE PNEUMATIC MOTOR - The present invention provides a pneumatic motor having a motor body having an air inlet and an air outlet, at least one rotor mounted in a chamber of the motor body and adapted to be driven by compressed air fed into the air inlet and an adhesive lubricant applied to the at least one rotor, the lubricant being sufficiently adhesive to remain substantially adhered to the at least one rotor under operational speeds in excess of 13500 rpm. | 02-04-2010 |
| 20100054980 | ROTOR AND COMPRESSOR ELEMENT PROVIDED WITH SUCH ROTOR - Rotor comprising a shaft ( | 03-04-2010 |
| 20100092323 | VANE TYPE VACUUM PUMP - A vane type vacuum pump | 04-15-2010 |
| 20100135837 | Pump Casing - The invention relates to a pump housing ( | 06-03-2010 |
| 20100233003 | FIXATION ARRANGEMENT FOR AN OIL PUMP IN A REFRIGERATION COMPRESSOR - The fixation arrangement of the present invention is applied to a compressor of the type which comprises a shell ( | 09-16-2010 |
| 20100247361 | COMPRESSOR - A compressor is provided with a substantially cylindrical housing. Inside the housing is a motor housing having a substantially cylindrical shape and a compressor housing having a substantially cylindrical shape. The motor housing and the compressor housing are connected or fit into the housing with a frictional connection to prevent axial movement of the motor housing and the compressor housing. | 09-30-2010 |
| 20110268598 | GEAR PUMP - A gear pump having double-helical gears with bearing assembly seals and gear end seals which provided double seal interfaces between the pump cavity and bearing cups having disposed therein bearing assemblies for supporting pump shafts for rotation. The double seal interfaces preclude pumped fluid, particularly contaminated fluid including entrained abrasives from making contact with the bearing assemblies. An adjustable packing seal mechanism, a gear gap adjustment mechanism, a fluid pressure relief system, and pump heat exchanger features are also disclosed. | 11-03-2011 |
| 20120201709 | COMPRESSOR - A compressor has a housing which includes a compression mechanism for compressing and then discharging sucked air, and an intercooler core for cooling the discharged air and mitigating a pressure fluctuation thereof. The housing has a cylinder block integrally formed so as to include a rotor chamber which accommodates the compression mechanism, a silencing and cooling chamber which accommodates the intercooler core, and a discharge hole which provides communication between the rotor chamber and the silencing and cooling chamber. | 08-09-2012 |
| 20120219444 | INPUT SHAFT LUBRICATION FOR GEAR PUMP - A shaft assembly includes a gear with a gear bore having a splined bore section adjacent to an oil dam. A shaft includes a first splined end section and a second splined end section, the first splined end section engageable with the splined inner diameter, the shaft having a bore with a bore diameter greater than a diameter of the oil dam, a first set of radial apertures axially inboard of the first splined end section in communication with the shaft inner bore and a second set of radial apertures axially inboard of the second splined end section in communication with the shaft inner bore that altogether provide lubrication of the splined end sections. | 08-30-2012 |
| 20130101454 | ROTARY COMPRESSOR - In a rotary compressor of a vane rotary type, an outer peripheral surface of an eccentric portion of a shaft on a side adjacent to a center of the shaft is located radially inwardly of an outer peripheral surface of a main shaft inserted in a main bearing and that of an auxiliary shaft inserted in an auxiliary bearing. Also, a back clearance means used in mounting a piston on the shaft is provided in each of an inner peripheral surface of the piston and the eccentric portion of the shaft. Such configurations can reduce a diameter of the eccentric portion. A reduction in diameter of the eccentric portion can reduce a viscous force of oil acting between the eccentric portion of the shaft and the inner peripheral surface of the piston to thereby reduce a rotational moment about a center of the eccentric portion of the shaft, which rotational moment acts on the piston in a direction of rotation of the shaft, thus making it possible to reduce a sliding loss that is generated by a reciprocating motion of a vane in a vane groove. | 04-25-2013 |
| 20130108497 | DEVICE FOR DAMPING SLOSHING OF OIL FOR A SCREW-TYPE COMPRESSOR | 05-02-2013 |
| 20130136643 | Oil Free Screw Compressor - Provided are a structure of arranging a compressor main body and a compressor driving motor at a bottom of a package; including a duct on a top side thereof; arranging an inter cooler on a left side surface of the duct; arranging an after cooler on a top surface thereof; arranging an oil cooler on a front surface thereof; arranging a cooling fan inside of the duct; providing an exhaust port on a bottom surface of the duct; and respectively providing exhaust ducts connected to a top surface of the package on downstream sides of the coolers, and a structure of cooling air suctioned by the cooling fan from the suction port to the inside of the duct, passing through the coolers, and discharged upwardly from the package via the exhaust duct, implementing a compact oil free screw compressor with low noise capable of reducing an installation area. | 05-30-2013 |
| 20140127067 | Screw Compressor - In order to improve a screw compressor comprising a screw compressor housing having a screw rotor housing, screw rotor bores arranged in the screw rotor housing, screw rotors arranged in the screw rotor bores and mounted in the screw rotor housing for rotation about rotational axes, a drive for the screw rotors, and a slider which is guided for displacement in a slider receptacle in the screw rotor housing and is, in areas, in adjacent relation to the screw rotors with end faces, for adjusting a volume ratio of the screw compressor and which, starting from an insertion space of the slider receptacle, extends in a direction towards the high-pressure outlet in a guide trough of the slider receptacle that is open towards the screw rotor bores and which is capable of being positioned in a first position and a second position, wherein the volume ratio of the screw compressor is greater in one of the positions than in the other of the positions, in such a manner that it requires as small an installation space as possible for actuation of the slider, it is proposed that the slider be connected to a first cylinder element which is at least partially arranged in the insertion space and cooperates with a second cylinder element which is at least partially arranged in the insertion space and that the cylinder elements be arranged following the slider in the displacement direction thereof on a side of the slider that is opposite the high-pressure outlet. | 05-08-2014 |
| 20140170010 | VANE ROTARY COMPRESSOR - The present invention relates to a vane rotary compressor in which, while a rotor is rotating, the volume of a compressing chamber is reduced and a fluid such as a refrigerant is compressed. The vane rotary compressor according to one embodiment of the present invention is provided with the compressing chamber, the inner circumferential surface of which is formed in the shape of an involute curve, wherein the rotor is hinge-coupled with a plurality of cantilever vanes such that compression efficiency is high and noise is prevented from occurring during the operation of the compressor. | 06-19-2014 |
| 20150292505 | AUTOMOTIVE VOLUMETRIC VACUUM PUMP - An oil-lubricated automotive volumetric vacuum pump includes a circumferential pump room wall surrounding a pump room. A rotor comprises a rotor body with an oil receiving cavity and a guiding slot. The rotor body is adjacent to the pump room wall. The rotor rotates inside the pump room. A vane with a vane body and a vane end portion shifts in the guiding slot. The rotor body, the vane, and the circumferential pump room wall define at least two pump chambers. An oil discharge channel with a flow opening in a plane is arranged at the vane end portion of the vane and/or at the guiding slot. The flow opening opens so that oil can flow from a pump chamber through the oil discharge channel to the oil receiving cavity only in a retracted position of the vane end portion during a final compression phase of the respective pump chamber. | 10-15-2015 |
| 20150361978 | OIL PUMP FOR AUTOMATIC TRANSMISSION - An oil pump for an automatic transmission includes a housing provided with at least one hydraulic line formed therein. A power source is coupled to the housing and supplies a torque through a drive shaft. Two pumps are disposed respectively at both end portions of the housing and disposed concentrically with the drive shaft in the housing. The two pumps are operably connected to each other through a torque delivery shaft, and pump an oil by receiving the torque from the drive shaft. The drive shaft is inserted into and is operably connected to a first inner rotor of one pump, and is operably connected to the torque delivery shaft connected to a second inner rotor of the other pump through an engaging portion. | 12-17-2015 |
| 20160131137 | ROTARY COMPRESSOR - A rotary compressor includes: a vertically-positioned airtight compressor housing, in an upper section of which a discharge unit of a refrigerant is provided and in a lower section of which an inlet unit of the refrigerant is provided and lubricant oil is stored; and a lubricating mechanism supplying lubricant oil stored in the lower section of the compressor housing to a sliding portion of a compressing unit through a vertical lubricating hole and a horizontal lubricating hole of a rotation shaft. The horizontal lubricating hole of the lubricating mechanism is formed between the same direction as an eccentric direction of an eccentric portion provided on the rotation shaft and causes an annular piston of the compressing unit making an orbital motion in a cylinder and a 80° phase shifted direction from the same direction as the eccentric direction in a direction opposite to a rotation direction of the rotation shaft. | 05-12-2016 |
| 20160186757 | COMPRESSOR WITH A CLOSED LOOP WATER COOLING SYSTEM - The present disclosure provides a compressor system having at least one fluid compressor for compressing a working fluid. A lubrication supply system is operable for supplying lubrication fluid to the compressor. A closed loop cooling system using R718 refrigerant is provided to cool the working fluid. The closed loop cooling system includes a refrigerant compressor for compressing the refrigerant, a condenser operable for receiving compressed refrigerant gas and removing heat to form liquid refrigerant, and an expansion device for expanding and cooling the liquid refrigerant into a cooled gaseous refrigerant. | 06-30-2016 |
| 20180023685 | Support Part Lubrication Structure For Gear Member, And Differential Device | 01-25-2018 |
| 418084000 | With condition responsive control of non-working fluid | 13 |
| 20080279708 | Screw Compressor with Oil Feed System - A rotary screw compressor with an oil feed system that has a plurality of oil orifice nozzles to feed oil to the compressor rotors and the compressor bearings. One of the oil orifice nozzles is generally always provided with a regulated flow of oil. At least one and preferably two on/off oil valves can be selectively opened and closed. Each of the on/off oil valves are of a different size and are selectively opened and closed to step regulate the amount of oil being fed to the compression chamber according to a predetermined compression chamber discharge temperature. | 11-13-2008 |
| 20090232688 | Compressor Installation With a Water-Injected Compressor Element - Compressor installation with a water-injected compressor element to which an inlet line ( | 09-17-2009 |
| 20090252632 | Device to Prevent the Formation of Condensate in Compressed Gas and Compressor Unit Equipped with Such a Device - Device to prevent the formation of condensate in compressed gas coming from an oil-injected compressor element ( | 10-08-2009 |
| 20100034684 | METHOD FOR LUBRICATING SCREW EXPANDERS AND SYSTEM FOR CONTROLLING LUBRICATION - A method for lubricating a screw expander includes condensing a mixture of working fluid and lubricant fed from the screw expander, through a condenser. At least a portion of the mixture of working fluid and lubricant fed from the condenser is pressurized from a first pressure to a second pressure through a pump. The method also includes separating the lubricant from the condensed working fluid of the at least portion of the mixture via a separator and feeding the lubricant to the screw expander; or separating the lubricant from the working fluid of the at least portion of the mixture via an evaporator and feeding the lubricant to the screw expander; or feeding the at least portion of the mixture of condensed working fluid and lubricant to the screw expander; or combinations thereof. | 02-11-2010 |
| 20100233004 | Air Compressor of Water Injection Type - In a water injection air compressor including a compressor main body for compressing air, a water-feed line for feeding water to an actuation chamber in the compressor main body, an air release valve for releasing the compressed air from the compressor main body, and a control panel for executing an on-load operation mode in which water is fed into the actuation chamber and an air release valve is closed and a no-load operation mode in which the water is fed into the actuation chamber and the air release valve is opened, wherein the control panel further executes a dry operation mode in which the water is prevented from being fed into the actuation chamber and with the air release valve is opened. | 09-16-2010 |
| 20110014077 | METHOD FOR COOLING A LIQUID-INJECTED COMPRESSOR ELEMENT AND LIQUID-INJECT COMPRESSOR ELEMENT FOR APPLYING SUCH A METHOD - Method for cooling a liquid-injected compressor element, whereby a liquid is injected in the compression chamber of this compressor element ( | 01-20-2011 |
| 20120301343 | COMPRESSOR - A compressor includes a main body having in a housing a vane back-pressure space configured to project a vane forming a compression room for compressing gas, and a centrifugal oil separator, wherein a discharge section to which the gas from the oil separator is ejected is formed in the housing, the oil separator includes a pressure-adjusting valve configured to adjust pressure of the vane back-pressure space according to pressure of the discharge section, and the pressure-adjusting valve is provided in the oil separator without being affected by the gas ejected from the oil separator. | 11-29-2012 |
| 20130058822 | Screw Compressor - In order to improve a screw compressor comprising a housing, at least one screw rotor arranged in a compressor housing of the housing, a lubricant sump which is arranged on the high pressure side and in which lubricant collects, and a lubricant supply device which supplies lubricant from the lubricant sump to the at least one screw rotor, in such a manner that the amount of circulating lubricant can be kept as small as possible for adequate lubrication, it is suggested that the lubricant supply device comprise a first lubricant supply system and a second lubricant supply system, that the first lubricant supply system supply lubricant to the at least one screw rotor during operation of the screw compressor and that the second lubricant supply system additionally supply lubricant to the at least one screw rotor and thereby be activatable and deactivatable. | 03-07-2013 |
| 20140308148 | Water Lubricated Screw Compressor - In a water-supply line for performing water-supply to the rotors and the mechanical seal of a compressor, or in a condensed-water collection line for collecting condensed water of a dryer into the inlet port of the compressor, a water reservoir is provided at a position higher than the water-supply unit of the compressor. Moreover, there are provided a start-time water-supply line and a solenoid valve set up therein. Here, the start-time water-supply line establishes the connection between the lower portion of the water reservoir, and the inlet port of the compressor and the water-supply unit of the mechanical seal. | 10-16-2014 |
| 20140341770 | WATER COOLED SCREW COMPRESSOR - A water cooled rotary screw compressor system. | 11-20-2014 |
| 20150064040 | COMPRESSOR ASSEMBLY WITH LIQUID SENSOR - A compressor may include a shell, a compression mechanism, first and second temperature sensors, and a control module. The shell may define a lubricant sump. The compression mechanism may be disposed within the shell and may be operable to compress a working fluid. The first temperature sensor may be at least partially disposed within the shell at a first position. The second temperature sensor may be at least partially disposed within the shell at a second position that is vertically higher than the first position. The control module may be in communication with the first and second temperature sensors and the pressure sensor and may determine whether a liquid level in the lubricant sump is below a predetermined level based on data received from the first and second temperature sensors. | 03-05-2015 |
| 20160186755 | COMPRESSOR SYSTEM WITH VARIABLE LUBRICANT INJECTION ORIFICE - A compressor system with a continuously variable oil injection orifice is structured to regulate a flow of oil from an oil reservoir into a compressor. The orifice includes a first valve member moveable in response to oil pressure toward a second valve member to define a continuously variable flow area. A biasing member urges the first valve member away from the second valve member. | 06-30-2016 |
| 20160201676 | VACUUM PUMP MECHANISM | 07-14-2016 |
| 418085000 | With heat exchange means for non-working fluid | 7 |
| 20080206085 | Oil-Injected Compressor with Means for Oil Temperature Regulation - The invention relates to an oil-injected compressor, in particular, an oil-injected mobile screw compressor with a motor-driven compressor unit, for the generation of compressed air cooperating with an oil circuit for lubrication, the oil tank of which is housed in a subsequent oil separator device for separating the oil from the compressed air. Means for oil temperature regulation are provided, comprising a cooler with a fan. The means for oil temperature regulation comprises a speed variable drive for the fan as adjuster, a regulator device for the speed of the fan matches the heat transferred to the ambient cooling air by the cooler. | 08-28-2008 |
| 20090004038 | Liquid-Cooled Rotor Assembly for a Supercharger - A rotor assembly for a supercharger assembly is provided. The rotor assembly includes at least one lobe defining at least one cavity. The at least one cavity is configured to contain a fluid operable to cool the at least one lobe. A supercharger incorporating the rotor assembly is also disclosed. | 01-01-2009 |
| 20090185938 | WATER-LUBRICATED COMPRESSOR - A water-lubricated compressor is disclosed, in which a discharge on-off valve is disposed in a discharge channel located between a discharge port of a compressor body and a water separating/recovering unit and a water circulation on-off valve is disposed in a water circulation channel located between a water cooler and a water supply portion in the compressor body, while a gas release channel is formed to provide communication between a gas phase portion of the water separating/recovering unit and the exterior of the water separating/recovering unit and a gas release on-off valve is disposed in the gas release channel. When the compressor body is not in operation, the discharge on-off valve and the water circulation on-off valve are closed and the gas release on-off valve is opened, allowing water present within the water cooler to be recovered to the water separating/recovering unit through the water circulation channel. With this structure, when there is little or no demand for compressed gas in a compressed gas supply destination, it is possible to remove water from the water cooler which is particularly apt to be damaged by freezing of water among the devices included in the water system of the water-lubricated compressor, and thus possible to prevent freezing of water. | 07-23-2009 |
| 20100119399 | VACUUM PUMP - A vacuum pump housing comprises first ( | 05-13-2010 |
| 20100158736 | Lubricant Circulation System - A lubricant circulation system ( | 06-24-2010 |
| 20120237382 | SCREW EXPANDER SYSTEM - A screw expander system includes a screw expander provided with an expansion space for expanding an operating medium, an operating medium inlet, an operating medium outlet, oil inlets, and oil outlets, a condenser which condenses a mixture, sent from the screw expander, of oil and the operating medium, a pump which pressure-feeds the mixture sent from the condenser, and an evaporator which evaporates the operating medium contained in the mixture. The screw expander system circulates and supplies the operating medium sent from the evaporator, to the operating medium inlet, and circulates and supplies the oil sent from the evaporator, to the oil inlets. An oil separating tank which separates the mixture into the operating medium and the oil is disposed between the evaporator and the screw expander, and an oil containing section of the oil separating tank and the oil inlets of the screw expander are connected. | 09-20-2012 |
| 20140140878 | COOLING SYSTEMS FOR ROTARY ENGINES - Cooling systems for rotary internal combustion engines. Air through-rotor cooling is provided by a closed-loop cooling system with an output shaft-driven fan. Liquid cooling is provided utilizing a cooling chamber within the output shaft. | 05-22-2014 |
| 418087000 | Valve regulated non-working fluid | 1 |
| 20130251578 | ROTARY VACUUM PUMP WITH A DISCHARGE COMPENSATING CHANNEL - A rotary vacuum pump includes a suction chamber ( | 09-26-2013 |
| 418088000 | With pump for non-working fluid | 10 |
| 20090004039 | Single Stage Root Type-Vacuum Pump and Vacuum Fluid Transport System Employing the Single Stage Root Type-Vacuum Pump - To provide a single stage root type-vacuum pump which can prevent an increase in an installation space while achieving a fine anti-corrosion property, and can shorten discharge time by preventing a drop in a pumping flow rate when pumping by reverse rotation, and to provide a vacuum fluid transport system employing this single stage root type-vacuum pump. | 01-01-2009 |
| 20090123317 | Vacuum pump with a lubricant pump - A vacuum pump includes a quick-rotatable component a bearing for supporting the quick-rotatable component and a lubricant pump for feeding lubricant to the bearing and having a rotor, with the bearing and the lubricant pump forming parts of a closed lubrication circuit having a hollow axle on which the rotor of the lubricant pump is rotatably supported. | 05-14-2009 |
| 20090280020 | COMPRESSOR - There is disclosed a compressor which stably supplies oil to a sliding portion. The compressor includes an ejector oil pump which sucks the oil from an oil reservoir in the bottom part of a sealed container to an oil passage formed in a rotary shaft, and the ejector oil pump includes an oil suction pipe having one end connected to the oil passage and the other end which opens in the oil reservoir, and an ejector pipe having one end which communicates with the discharge side of a compression mechanism portion and the other end inserted into the opening of the other end of the oil suction pipe to open. The inner diameter of the other end of the oil suction pipe is larger than the outer diameter of the other end of the ejector pipe so that a gap for oil suction is constituted between both the pipes, and the other end of the oil suction pipe is provided with first and second dowel portions as positioning portions which position the other end of the ejector pipe. | 11-12-2009 |
| 20100015000 | APPARATUS FOR SIMULTANEOUS SUPPORT OF PRESSURIZED AND UNPRESSURIZED MECHANICAL SHAFT SEALING BARRIER FLUID SYSTEMS - An improved, piston-based, pressure-transforming barrier fluid support apparatus is disclosed that can support both the pressurized and unpressurized barrier fluid requirements of a shaft-driven machine from a single unit. The disclosed apparatus includes both a pressurized section that stores, cools, cleans, and pressure regulates pressurized barrier fluid, and an unpressurized section that stores, cools, and cleans unpressurized barrier fluid. The disclosed apparatus causes debris in the pressurized barrier fluid to gravitationally migrate away from the piston, so as to prevent piston fouling. If the piston rod becomes detached, it is expelled downward for enhanced safety. Removable covers and/or a removable cylinder can provide enhanced access for cleaning and maintenance. Embodiments include a common cover that is shared by the pressurized and unpressurized sections and serves as a common manifold for cost-efficient fluid connections thereto. | 01-21-2010 |
| 20100111742 | ROTARY POSITIVE DISPLACEMENT PUMP WITH MAGNETIC COUPLING HAVING INTEGRATED COOLING SYSTEM - A rotary positive displacement pump for liquid medium having a main pumping mechanism driven by a magnetic coupling is disclosed. The positive displacement pump includes an integrated, positive displacement, circulating pump configured to provide a controlled medium flow through the magnetic coupling from a discharge side ( | 05-06-2010 |
| 20100183467 | PORTABLE, ROTARY VANE VACUUM PUMP WITH AUTOMATIC VACUUM BREAKING ARRANGEMENT - A portable, rotary vane vacuum pump with an automatic vacuum breaking arrangement that vents the pump to atmosphere whenever the drive motor ceases to rotate the pump. The arrangement prevents lubricating oil in any substantial amount from being undesirably drawn or sucked into the evacuated pump when the drive motor is shut off either intentionally or unintentionally. If the system being evacuated is also still connected to the pump, the arrangement will additionally vent it and greatly limit any amount of oil that may be undesirably sucked back into it. The pump also has a primary oil container that essentially holds all of the oil for the system. The primary container is preferably made of clear, rigid plastic so that the condition of the oil in the system can be visually monitored. It is also removable from the main body of the pump and can be quickly and easily replaced with another container of fresh oil even while the pump is still operating. | 07-22-2010 |
| 20100329916 | OIL-COOLED TYPE SCREW COMPRESSOR - Provided is an oil-cooled type screw compressor having a compressor body for compressing a suction gas and discharging the compressed gas. The compressor body comprises rotor shafts mounted individually on screw rotors in a rotor casing and extending to the two sides of the screw rotors, disc-shaped thrust plates for rotating integrally with the rotor shafts, sealing members for sealing the thrust plates rotatably while spacing them from the screw rotors and for defining a first space and a second space on the two sides of the thrust plates, thrust bearings arranged individually in the first space and the second space, an oil feed passage communicating with such one of the first space and the second space as is located on the side to apply a force against the thrust force to the thrust plates when boosted, for establishing the communication between the space inside and an oil feed source, an oil discharge passage communicating with such one of the first space and the second space as is located on the side to apply a force against the anti-thrust force to the thrust plates when boosted, for establishing the communication between the space inside and an oil discharge target, and an oil distribution passage for distributing the oil between the first space and the second space. | 12-30-2010 |
| 20110027117 | ROTARY COMPRESSOR - According to one embodiment, a rotary compressor includes a compressor housing, a compressing unit, a motor, and an oil supply mechanism. The compressor housing has an inlet and an outlet of refrigerant. The compressing unit compresses refrigerant sucked in from the inlet. The motor drives the compressing unit through a rotation shaft. The oil supply mechanism supplies lubricant oil to the compressing unit through an oil supply hole of the rotation shaft. The oil supply mechanism includes a housing hole, a pump case, and a pump vane. The housing hole is communicated with the oil supply hole. The pump case is fitted in the housing hole. The pump vane is housed in the pump case, and includes a large width portion which is locked by the upper inner surface of the pump case. | 02-03-2011 |
| 20120201710 | WATER INJECTION TYPE SCREW COMPRESSOR - A water injection type screw compressor wherein gas sucked from an intake flow is supplied to a rotor chamber, compressed and discharged into a discharge channel as compressed fluid together with water supplied to the rotor chamber, comprises a water separator disposed in the discharge channel to separate water and gas from compressed fluid, a water channel connecting the water separator to a compressor main body for supplying the rotor chamber with the water separated in the water separator, and an oil circulation channel including an oil pump, an oil filter, and a housing for storing oil for supplying the oil to where lubrication is needed. Further, a part of the water channel is arranged passing through an oil trap formed at the bottom inside the housing for storing oil. Thus, oil temperature increases can be minimized in simplified structure having no oil cooling means such as an oil cooler. | 08-09-2012 |
| 20160040670 | ROTARY SCREW COMPRESSORS UTILIZING VISCOUS DAMPING FOR VIBRATION REDUCTION - A screw compressor utilizing radial and axial or thrust bearings to maintain the position of the rotors radially and axially and utilizing a damping fluid to dampen rotor vibrations. The damping fluid may conveniently be provided in the form of lubricant that is already used in the compressor to seal the clearances between the rotors and between the rotors and the cylinder during compression. The damping fluid is included in a squeeze film damper, arranged in a parallel arrangement with the radial or thrust bearings, which provides viscous damping to the rotor. The introduction of additional viscous damping such as may be provided by squeeze film dampers may result in significant reduction of compressor vibration regardless of the source of vibration. | 02-11-2016 |
| 418089000 | With filter for non-working fluid | 3 |
| 20090246060 | Compressor - A compressor having a discharge chamber into which compressed refrigerant gas is discharged, a discharge passage connected to the discharge chamber, an oil separation device that centrifugally separate oil from the refrigerant gas, an oil reservoir chamber that communicates with a separation chamber through an oil passage and retains the oil separated from the refrigerant gas, and a filter provided between the separation chamber and the oil passage is disclosed. The oil reservoir chamber communicates with a low pressure zone in the compressor the pressure of which is lower than the pressure in the discharge chamber. The oil reservoir chamber thus supplies the separated oil to the low pressure zone. The oil separation device is arranged in the discharge passage in such a manner as to define the separation chamber. The oil separation device centrifugally separate the oil from the refrigerant gas by causing swirling of the refrigerant gas that has been sent to the separation chamber. The filter extends in a swirling direction of the refrigerant gas in the separation chamber. | 10-01-2009 |
| 20140017110 | SCREW COMPRESSOR SYSTEM - A screw compressor system which is designed to be compact and flexible with a modular design such that a screw compressor block, an oil separation container, an oil supply duct for a temperature regulator and an air intake duct are combined in a base housing having a lid. A further module component provided is a multifunction block in which a fine separator, an oil return, a minimum pressure-maintaining valve with a pure air outlet, an oil temperature regulator, an oil filter and connections for a sensor are combined. | 01-16-2014 |
| 20160097572 | Refrigerant Compressor - A refrigerant compressor particularly a rotary screw compressor comprising a compressor housing, a compressor element which is driven by a drive and is arranged in said compressor housing, at least one bearing unit for at least one element of the drive which comprises at least one bearing housing and at least one roller bearing that is arranged in the bearing housing. Lubricant is supplied by a lubricant distribution system to the bearing housing and a lubricant dispensing unit which comprises a filter holding chamber and a filter body that is arranged in the filter holding chamber is associated with the bearing housing. | 04-07-2016 |
| 418091000 | Non-working fluid passage in inner working or reacting member | 11 |
| 20080232992 | Fluid Machine - In a compression/expansion unit ( | 09-25-2008 |
| 20080286138 | Helical Screw Compressor Comprising a Cooling Jacket - The invention relates to the rotor housing ( | 11-20-2008 |
| 20110293457 | PNEUMATIC VANE MOTOR - A pneumatic vane motor comprising a housing ( | 12-01-2011 |
| 20120107165 | ENGINE COOLING SYSTEM - A piston cooling system for a pivoted piston ( | 05-03-2012 |
| 20120141313 | VACUUM PUMP - The invention relates to a vacuum pump comprising a cup-shaped housing, a rotor eccentrically mounted for rotation in the housing, and a housing cover closing the cup-shaped housing, wherein the rotor has a rotor shaft that passes through the cup-shaped housing and by which the rotor is driven, wherein the rotor shaft is provided with a bore for delivering a lubricant, and a connection nipple is seated in the free end section of the bore. | 06-07-2012 |
| 20130294957 | Pump - A pump comprises a rotor arrangement and a stator arrangement. The stator arrangement comprises a first part made from a corrosive resistant material which defines a volume which in use is swept by the rotor arrangement for pumping fluid from an inlet to an outlet of the stator arrangement. A second part of the stator arrangement is made from a thermally conductive material which envelopes the first part so that heat generated in the first part can be transferred to the second part at the interface surface between the two parts. The second part has formed therein at least one duct | 11-07-2013 |
| 20140199199 | Gas Pump With Pressure Relief for Reducing the Starting Torque - A gas pump including a delivery chamber with an inlet and an outlet for a gas; a first housing part with a first sealing surface which at least partially surrounds the delivery chamber; a second housing part with a second sealing surface which at least partially surrounds the delivery chamber, wherein the second housing part together with the first housing part at least partially encloses the delivery chamber; a delivery device which can be moved within the delivery chamber, for delivering the gas; and a pressing device which presses one of the housing parts against the other with a pressing force, such that the sealing surfaces abut each other and together form a sealing join which at least partially surrounds the delivery chamber, in order to seal off the delivery chamber, wherein the second housing part can be moved relative to the first housing part, against the pressing force, in order to be able to widen the sealing join to form a relieving gap through which liquid situated in the delivery chamber can escape. | 07-17-2014 |
| 20140334960 | Vacuum Pump - The present invention relates to an automotive vacuum pump | 11-13-2014 |
| 20150017045 | VACUUM PUMP OF VEHICLE FOR REDUCING OPERATION NOISE - A vacuum pump of a vehicle for reducing operation noise may include a rotor rotating in a space defined by a housing formed in a pump body at an eccentric position relative to a center of the space, a vane installed to the rotor to rotate eccentrically in the space, and an oil outlet passing through the pump body and formed at a predetermined height above a lower limit of the space such that, when lubricant in the space is discharged in a pressurized state by the vane, the lubricant is not reintroduced back into the space by gravity. | 01-15-2015 |
| 20150118093 | SPINDLE COMPRESSOR - A spindle rotor pair of a spindle compressor has a two-toothed spindle rotor and a three-toothed spindle rotor meshing the other without contact. The wrap angle related to the two-toothed spindle rotor is at least 800 angular degrees. A range of at least 30 m/sec is achieved as the mean circumferential speed of the rotor head. In the transverse section, both spindle rotors have arc sectors and cycloid profile contour flanks. In the case of the two-toothed spindle rotor, they are primarily above its gear-tooth pitch circle and of convex design, however, in the case of the three-toothed spindle rotor, they are below its ear-tooth pitch circle and of concave, i.e., hollow, design. Preferably, the transverse sections of each spindle rotor are symmetrical in a way that in each transverse section, the centre of gravity of the profile surfaces comes to lie on the respective rotor pivot point. | 04-30-2015 |
| 418094000 | With non-working fluid passage in drive shaft | 1 |
| 20150330382 | HERMETIC ROTARY COMPRESSOR - A rotor has at its two axis end portions an upper large-diameter inner circumferential portion and a lower large-diameter inner circumferential portion that have inner diameters larger than the inner diameter of the axially middle portion of the rotor and are offset in the radial direction. A crankshaft has a passageway, which is formed in the crankshaft and allows refrigerant to flow therethrough, and a gas venting hole, which provides communication between the passageway and at least one discharge opening formed in the outer circumferential surface of the crankshaft. The at least one discharge opening is formed at a position facing the inner circumferential surface of the lower large-diameter inner circumferential portion | 11-19-2015 |
| 418097000 | Non-working and working fluids intermix in working chamber | 8 |
| 20080226483 | Compressor - A compressor comprises an oil separator for separating oil from a refrigerant compressed by a compression mechanism unit, and a high-pressure oil storage chamber for storing the oil separated by the oil separator. At least a portion of the oil separator is provided outside a housing. The high-pressure oil storage chamber has an outer wall that is thicker than the outer wall of the housing accommodating the compression mechanism unit, and an end wall of the housing is formed by this thicker outer wall. | 09-18-2008 |
| 20080310986 | OIL-COOLED SCREW COMPRESSOR - In an oil-cooled screw compressor comprising, a compressor body including a pair of a male rotor and a female rotor, a motor including a stator and a motor rotor connected to one of the male and female rotors, and an oil separator container for gathering the oil from a mixture of the gaseous manner and oil to restrain the oil from proceeding with the compressed gaseous matter after the mixture of the gaseous manner and oil is discharged from the pair of male and female rotors, a rotational axis of the motor rotor and the rotational axis of the one of the male and female rotors are coaxial with respect to each other. | 12-18-2008 |
| 20090028737 | Reservoir for a Replacement Fluid for a Device and a Device, Together with an Oil separator fitted with such a reservoir - Reservoir for a replacement fluid for a device, where the reservoir ( | 01-29-2009 |
| 20090246061 | Gas compressor - In a gas compressor, a cyclone block is configured to include a substantially cylindrical space into which a compressed gas is introduced to separate refrigeration oil from the gas. A pressure bypass is formed in the substantially cylindrical space defined by an outer cylindrical unit and an inner cylindrical unit to communicate with a discharge chamber having lower pressure than that of the substantially cylindrical space. The pressure bypass includes a pressure valve to open and close the pressure bypass in accordance with the internal pressure of the substantially cylindrical space having the pressure bypass. During a high speed operation of a compressor unit, the coolant gas including unseparated refrigeration oil is discharged from the pressure bypass. | 10-01-2009 |
| 20130287618 | Refrigerant Compressor - Oil recirculation mechanism includes an oil separation portion (separation chamber | 10-31-2013 |
| 20160084252 | Negative Pressure Pump and Cylinder Head Cover - A negative pressure pump has: a housing; a rotating shaft having a shaft portion, and a supporting portion ; a vane that is supported at the supporting portion so as to freely move reciprocally in a direction orthogonal to the rotating shaft, and that rotates integrally with the rotating shaft, and whose end portions slide on an inner wall surface, and that sections an interior of the housing into plural spaces; an intake portion that is formed in the housing; a discharging portion that is formed further toward a vane rotating direction downstream side than the intake portion; and a concave portion that is formed in a bottom surface between the discharging portion and a curved surface in a vane rotating direction, and that communicates with a circular hole, and guides the lubricant, that is moved by the vane, to the circular hole. | 03-24-2016 |
| 418098000 | Non-working fluid initially directed to shaft bearing | 1 |
| 20140199200 | EXPANDER CIRCUIT - An expander circuit for a thermal expander, having a first pump arranged between a condenser and an evaporator, is proposed, the inlet of the expander being connected to the evaporator and the outlet to the condenser, and a separate lubricating circuit connecting the expander circuit to at least one bearing. | 07-17-2014 |
| 418099000 | Non-working fluid initially directed to working member | 1 |
| 20110076174 | SCREW COMPRESSION APPARATUS - A screw compression apparatus ( | 03-31-2011 |
| 418100000 | Intermixed incoming working and non-working fluids | 1 |
| 20110158840 | OIL RECOVERY MEMBER, AND MOTOR MECHANISM AND COMPRESSOR USING THE SAME - The present invention relates to an oil recovery member, and a motor mechanism and a compressor using the same. The oil recovery member is provided to prevent oil rising along a rotation shaft from being discharged with refrigerant, and relative sizes such as installation positions between the oil recovery member and components adjacent thereto are restricted. Therefore, since the oil flow is guided through a passage defined between the oil recovery member and the adjacent components, the oil can be efficiently recovered, so that an oil circulation rate of a freezing cycle can be reduced and compression efficiency can be improved. | 06-30-2011 |
| 418101000 | With coolant air impelling means or finned cylinder surface | 2 |
| 20090110583 | Rotary blower with super-charged injection cooling - This invention involves a rotary blower with super-charged injection cooling having multiple interconnected and synchronized parallel multi-lobe rotors with the same number of lobes for propelling flow from a suction port to a discharge port of an inner casing without using internal compression. The embodiments incorporate manifolds near the blower discharge port acting as super-charging inlet port injecting air at the elevated pressure over the blower discharge pressure to cool the impellers and internal casing. The cooling air supply could be piped from an external compressed air source or could be generated by one or more fans mounted on the rotors own shafts. | 04-30-2009 |
| 20150139845 | HOUSING FOR A ROTARY VANE PUMP - A housing for a rotary vane pump includes a suction flange and a discharge flange having a multi-angular cross-section with at least two sides extending parallel to each other, cooling ribs provided on an outer surface of the housing, with the number of cooling ribs in the region with a high internal pressure being greater than a number of cooling ribs in the region with a low internal pressure, inlet and outlet, with the inlet cross-section being greater than the outlet cross-section, and connection elements provided on the housing and each having two installation surfaces connected by a connection surface. | 05-21-2015 |
