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7547203 |
Screw compressor
In order to improve a screw compressor for compressing refrigerant in a refrigerant circuit, comprising a compressor housing, in which a screw rotor receiving means and an inlet channel as well as...
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7481634 |
Volumetric screw compressor provided with delivery adjustment device
A volumetric compressor comprising: a casing provided with a suction chamber and a delivery chamber, between which a pair of screw rotors is included; a pan containing oil, and a delivery...
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RE40344 |
Scroll machine with ported orbiting scroll member
A scroll compressor includes a fluid injection system. The fluid injection system includes a fluid passage which extends from a position outside of the shell of the compressor to the fluid pockets...
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7232295 |
Tempering method for a screw-type vacuum pump
A screw-type vacuum pump ( 1 ) is tempered such that characteristics of the pump are not substantially altered when the pump is subjected to thermal stress. In order to achieve said aim, cooling is...
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7201569 |
Screw compressor
Disclosed is a screw compactor comprising two screw rotors which are disposed in screw rotor bores inside a compressor housing and compress a coolant that enters at a coolant inlet and discharge...
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7052249 |
Air/oil separating tank—thermostatic valve—minimum pressure valve—oil cooling radiator—compressed air cooling radiator group
A group is provided for a compressed air distribution unit of the type including an intake regulator, an oil bath-screw type compressor, an air/oil separating tank, a minimum pressure valve, an air...
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6866490 |
Water-injected screw compressor
The invention relates to a water-injected screw compressor which comprises a compressor element ( 1 ) with an interior space ( 3 ), a suction conduit ( 7 ) which connects to an inlet part ( 6 ),...
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6739853 |
Compact control mechanism for axial motion control valves in helical screw compressors
An axial slide valve is provided with an axially extending fluid chamber at each end with one chamber receiving a spring and being acted on by suction pressure and the other chamber coacting with a...
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6719546 |
Arrangement for controlling the flow of a coolant fluid in a compressor
The invention comprises an arrangement for controlling the flow of a coolant fluid in a compressor, in particular in a rotary compressor, in which a coolant-fluid inlet for coolant fluid discharged...
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6701220 |
Industrial robot device
An industrial robot including a manipulator having a control system. The manipulator includes a common gear housing having first and second inner compartments connected with a passage channel....
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6616431 |
Scroll-type compressors
A scroll-type compressor has a piston valve mechanism for controlling the feeding of lubricating oil to slidable parts of the compressor. The piston valve mechanism includes a cylinder bore that...
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6612820 |
Screw compressor having sealed low and high pressure bearing chambers
A method and apparatus for compressing process fluids in a working chamber having a male and a female rotor, each supported by shafts in a first and a second bearing chamber maintained at low and...
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6575720 |
Bearing and shaft cooling device
The bearing cooling device causes cooling media to flow into the interior of a journal bearing 8 for supporting a shaft part 7 by lubrication of high viscous fluid and the interior of the shaft...
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6494696 |
Scroll compressor
A scroll compressor comprising: a vessel; a compressing mechanism provided within said vessel, the compressing mechanism comprising an orbiting scroll and a non-orbiting scroll each having a spiral...
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6409489 |
Compressor installation with water-injected compressor element
The invention concerns a compressor installation with a water-injected compressor element ( 1 ) having a water cycle ( 6 ) and a water supply device ( 15 ) for supplying water to the water cycle (...
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6375443 |
Screw rotor type wet vacuum pump
A feed pipe 26 for a sealing water is connected to a housing of the pump to communicate with an enclosed chamber which is defined between a position in which a helical seal line of screw rotors ...
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6315535 |
Screw vacuum pump having valve controlled cooling chambers
A discharge side housing 3 has a third cooling water chamber 19 communicating with a first cooling water chamber 7 of a main housing 1 through a cooling water passage 26. The third cooling water...
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6174148 |
Water jet type air compressor system, its starting method, and water quality control method thereof
Upon starting instruction of a compressor before the compressor is started, a pressurized water jet line 20 is opened and pressurized water is jetted to the inside of the compressor. By this...
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6129532 |
CO.sub.2 compressor
A CO 2 compressor is disclosed for forcing and moving a lubricant under discharge pressure. If the oil path is reduced in size or a pressure reducing part is inserted to handle the large...
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6102683 |
Compressor installation having water injection and a water treatment device
The invention relates to a compressor installation (10) with an injection-cooled compressor (12) and a method for compressing a gas in a compressor installation. In order to allow for an...
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5954482 |
Compressor having pressure eliminating means
A gas compressor has a first chamber for receiving a low pressure refrigerant gas. A main body has a second chamber for drawing in the low pressure refrigerant gas from the first chamber and...
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5871338 |
Vacuum pump with a gas ballast device
The invention pertains to a vacuum pump (1) with a closable line (63, 102) through which gas ballast can be fed into the pump chamber (8, 9); to eliminate the danger that a recipient hooked up to...
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5769617 |
Vane-type compressor exhibiting efficiency improvements and low fabrication cost
A rotary sliding-vane compressor is described which contains a single rotor with compressor and expander sections, together with a reduced number of parts and efficiency improvements compared to...
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5697771 |
Vacuum pump with oil separator
The invention relates to a vacuum pump (1) with an oil separator (42) connected downstream of its outlet (33) and with a duct (45, 46) through which the oil separated in the oil separator (42) is...
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5678986 |
Fluid displacement apparatus with lubricating mechanism
A fluid displacement apparatus includes a housing having a fluid inlet and a fluid outlet. A suction chamber is formed between one end of the displacement mechanism and the housing and communicates...
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5573387 |
Vacuum pumps
A rotary vacuum pump having a low vacuum stage and a high vacuum stage. Each stage includes a stator body having a bore and a rotor mounted eccentrically in the bore to form a cavity between the...
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5341658 |
Fail safe mechanical oil shutoff arrangement for screw compressor
Apparatus as disposed internal of a refrigeration screw compressor which, upon compressor shutdown, shuts off the flow of oil injected into the compressor's working chamber and the oil which is...
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5263832 |
Air-cooled oil-free screw compressor
An air-cooled oil-free screw compressor is provided with a first lubricating oil circulating flowpassage 1 which extends from an oil tank 20 via an oil pump 21 and an air heat exchanger 22 to...
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5253988 |
Gear pump
Method and apparatus for on-site cleaning of a gear pump by coupling the gear pump outlet to the gear pump inlet and to the inlet end of the passage and which bypasses the bearing and is preferably...
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5221199 |
Lubrication oil volume control device in a scroll type compressor
A scroll compressor includes a stationary scroll and a rotary scroll rotated by a motor-driven crankshaft. The crankshaft has parallel passages therein which communicate at their lower ends with a...
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5201648 |
Screw compressor mechanical oil shutoff arrangement
An integral member is disposed internal of a refrigeration screw compressor which, upon compressor shutdown, shuts off the flow of oil injected into the compressor's working chamber as well as the...
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5181414 |
Pumping apparatus for pumping a gas by means of an oil-sealed vane pump and application to helium leak detectors
A pumping apparatus for pumping a gas having application to helium leak detectors has a vane and oil-seal type vacuum pump immersed in a closed tank (9) partially filled with oil (10). The...
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5174741 |
Liquid injecting type oil-free screw compressor
A liquid injecting type oil-free screw compressor is capable of preventing the generation of polymer in any part inside the compressor main body. A temperature controller detects the gas...
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5174740 |
Hermetic type scroll compressor with regulation of lubricant to the inlet
A scroll compressor includes a stationary scroll and an orbit scroll for circulating refrigerant. Lubricant is introduced into the refrigerant at an inlet side of the compressor to maintain a seal...
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5066202 |
Method and apparatus for delivering oil to a multi-stage pump
A method and apparatus for delivering oil into a pump chamber of a high-vacuum stage of a multi-stage pump. The method includes the steps of sensing a first pressure at an intake region of the...
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5064452 |
Gas removable pump for liquid
A gas removable pump for liquid comprising a housing having an inlet for introducing the liquid thereinto and an outlet for feeding the liquid therefrom, a drive shaft extending into the housing...
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5033944 |
Lubricant circuit for a compressor unit and process of circulating lubricant
A lubricant circuit and a process for circulating a lubricant through such lubricant circuit of a compressor unit incorporating a planetary rotating compressor having a piston in an opening of a...
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4995797 |
Rotary screw vacuum pump with pressure controlled valve for lubrication/sealing fluid
A screw vacuum pump which includes a pair of screw rotors meshing each other with a small gap defined therebetween. A closing valve is provided in an oil circulation line leading from an oil...
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4984974 |
Screw type vacuum pump with introduced inert gas
The screw type vacuum pump comprises a pump casing having a suction inlet and a discharge outlet, and a pair of rotors incorporated within the pump casing and meshing with each other to rotate in...
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4983106 |
Rotary screw machine with multiple chambers in casing for lubrication-coding fluid
The machine comprises first and second screw rotors (1, 2) supported by bearings (47) in a stator casing (3) which is provided with a suction inlet and a delivery outlet, the first rotor is driven...
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4940400 |
Lubrication system for a rotary-piston internal combustion engine
A lubrication system for a rotary-piston internal combustion engine of the trochoid type with a multi-arc-shaped trochoidal surface and a multi-cornered piston supported on a roller bearing. A...
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4936761 |
Vane backpressure providing apparatus for sliding vane type compressor
In a sliding vane type compressor including a cylinder having a cylindrical inner wall, a rotor disposed within the cylinder and having a vane slot, and an oil supply means for feeding oil during...
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4795325 |
Compressor of rotary vane type
A compressor of the rotary vane type including an annular space dormed inside a rotor for communicating vane slots formed in the rotor in communication with one another and for storing lubricant...
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4776778 |
Refrigerant compressor with shaft bearing having improved wear resistance
In a refrigerant compressor, a driving shaft is rotatably supported within a compressor housing by a bearing on a suction side. A trigger valve is provided in a passageway communicating a discharge...
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4743183 |
Rotary vane compressor with discharge fluid to front and rear shaft bearings and vane slats
A first refrigerant gas passage is provided for conveying refrigerant gas under pressure to rearward ends of rotor vane slots through a rear bearing in order to supply back pressure to the rotor...
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4743184 |
Rotary compressor with heating passage between discharge chamber and shaft seal
A rotary compressor features a passage structure and valve arrangement which, under given modes of operation, permits relatively hot gaseous compressed working fluid to be introduced into a chamber...
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4720250 |
Regulator for cooling or heat pump systems
A rotary compressor in a cooling or a heat pump system which is provided with an oil injector and includes an oil separator on the high pressure side of the system. Oil is returned to the...
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4671748 |
Compressor unit for the production of compressed air
A compressor unit of the type in which a rotary vane compressor draws air from an intake opening and directs it to a pressure tank through a minimum-pressure valve and is self-lubricated by oil...
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4648815 |
Rotary air compressor with thermally responsive oil injection
A rotary air compressor of oil sealed type includes a stator containing a rotor, oil injectors arranged to inject oil into the interior of the stator, an oil sump connected by a first oil pathway...
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4544338 |
Oil feeder means for use in a horizontal type rotary compressor
A horizontal type rotary compressor including a compression element having a cylinder, a shaft having a crank thereon, a pair of side plates concurrently serving both as bearings of the shaft and...
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