| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 418083000 | HEAT EXCHANGE OR NON-WORKING FLUID LUBRICATING OR SEALING | 53 |
| 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 |
| 20100054980 | ROTOR AND COMPRESSOR ELEMENT PROVIDED WITH SUCH ROTOR - Rotor comprising a shaft ( | 03-04-2010 |
| 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 |
| 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 |
| 20100135837 | Pump Casing - The invention relates to a pump housing ( | 06-03-2010 |
| 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 |
| 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 |
| 20090297382 | EXPANDER AND EXPANDER-COMPRESSOR UNIT - The expander-compressor unit | 12-03-2009 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 20100092323 | VANE TYPE VACUUM PUMP - A vane type vacuum pump | 04-15-2010 |
| 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 |
| 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 |
| 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 |
| 418084000 | With condition responsive control of non-working fluid | 8 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 418085000 | With heat exchange means for non-working fluid | 6 |
| 20100158736 | Lubricant Circulation System - A lubricant circulation system ( | 06-24-2010 |
| 20100119399 | VACUUM PUMP - A vacuum pump housing comprises first ( | 05-13-2010 |
| 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 |
| 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 |
| 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 |
| 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 |
| 418088000 | With pump for non-working fluid | 9 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 418089000 | With filter for non-working fluid | 1 |
| 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 |
| 418091000 | Non-working fluid passage in inner working or reacting member | 5 |
| 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 |
| 20080232992 | Fluid Machine - In a compression/expansion unit ( | 09-25-2008 |
| 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 |
| 20080286138 | Helical Screw Compressor Comprising a Cooling Jacket - The invention relates to the rotor housing ( | 11-20-2008 |
| 418097000 | Non-working and working fluids intermix in working chamber | 5 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 | 1 |
| 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 |
