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7632081 |
Oil retrieving structure for a compressor
A scroll compressor is provided. The scroll compressor includes a casing, an oil pump, an oil retrieving port, and an oil retrieving unit. The casing has a fluid storage area in a lower portion...
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7632082 |
Hermetically sealed compressor and method of manufacturing the same
In a hermetically sealed compressor 100 including a rotary compressing element ( 4 ) having at least one cylinder ( 43 A, 43 B), and a roller ( 45 ) provided to the cylinder so as to be freely...
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7628593 |
Horizontal type scroll compressor including a first space and a second space
A horizontal type scroll compressor is provided with a support plate separating an inside of the sealed container into a first space in which the compressor mechanism portion and the electric motor...
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7581936 |
Hermetically sealed compressor having oil supply mechanism based on refrigerant pressure
A hermetically sealed rotary compressor 100 including an electrically-driven element 2 , a rotary compressing element 4 equipped with a cylinder 41 having a compression chamber 43 and a...
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7513760 |
Oil pump of scroll compressor
An oil pump of a scroll compressor is provided. The oil pump includes a pump body to which a drive shaft is inserted; a gear unit inserted to a lower side of the pump body and rotating by the...
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7494329 |
Oil pump for a compressor
An oil pump for a compressor is provided. The oil pump includes a pump body coupled to a driving shaft, and a pumping member coupled to the pump body so as to define a pumping part and a pump cover...
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7488165 |
Compressor having back pressure vane controlled for improving oil distribution
Previous compressors have employed compressors to compress and circulate refrigerant through a circuit, and have been unable to combine the differing advantages of rotary compressors, scroll...
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7481632 |
Scroll compressor with an oil passage plug to limit oil flow
A scroll compressor is provided with an orifice plug inserted into an oil passage. The plug has an opening which is positioned to restrict the flow of oil through the passage, and in particular at...
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7473081 |
Hermetically sealed compressor and method of manufacturing the same
In a hermetically sealed compressor 100 including a rotary compressing element ( 4 ) having at least one cylinder ( 43 A, 43 B), and a roller ( 45 ) provided to the cylinder so as to be freely...
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7458790 |
Vacuum pump with improved oil lubrication
A vacuum pump includes a housing assembly having an oil-reservoir chamber in which a lubricating oil is stored; a pair of screw rotors disposed in the housing assembly and engaged with each other;...
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7442018 |
Compressor having an oil residue pool
A compressor comprises, in a container body, an electric element, and a compressive element driven by the electric element. An oil storage is provided in the bottom, and an oil pump is provided to...
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7413423 |
Compressor having a lubrication shield
A cup-shaped shield surrounds a counter weight on the lower end of a rotor of the refrigeration compressor. The shield advantageously restricts lubricant flow to the rotating lower end of the rotor...
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7390180 |
Oil pumping device of hermetic compressor
A hermetic compressor uses an oil pump that includes a trochoid gear. Therefore, regardless of the rotation speed of a driving motor of the compressor, a sufficient amount of oil can always be...
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7381040 |
Compressor having pressure controlled for improving oil distribution
A compressor having a driving element stored in a sealed container of the compressor, and a compression element driven by a rotary shaft of the driving element. The compression element has a...
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7371058 |
Oil feeding propeller of scroll compressor
An oil feeding propeller of a scroll compressor for preventing deterioration of oil feeding generated when a rotation shaft is rotated in reverse is disclosed. The propeller is tightly fitted into...
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7351045 |
Rotational inhibitor for compressor lubricant
A compressor comprises an oil storage provided in the bottom of a container body. An oil cup is fixed in communication with the oil storage. An oil pump is attached to the lower end of a shaft and...
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7056108 |
Cooled screw-type vacuum pump
A screw-type vacuum pump ( 1 ) includes a pump housing ( 2, 6 ) with rotors ( 3, 4 ). A liquid cooling system cools the rotors and a drive motor ( 9 ). In order to improve the cooling of said pump,...
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7040880 |
Horizontal rotary compressor
A horizontal rotary compressor is configured such that an electrically powered compressor body is accommodated in a horizontally long hermetic receptacle in which a lubricating oil is...
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7021425 |
Closed type electric compressor
A sealed electric compressor for use in, for example, an electric refrigerator, generates a little noise and can feed any moving part of its compressing element with refrigerator lubricant. An oil...
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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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6758660 |
Screw vacuum pump with a coolant circuit
A screw vacuum pump ( 1 ) has shafts ( 7, 8 ) and rotors ( 3, 4 ) secured to the shafts. Each rotor has a central hollow chamber ( 31 ) which receives the shaft or contains in built-in components...
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6752605 |
Horizontal two stage rotary compressor with a bearing-driven lubrication structure
A hermetic rotary compressor including a housing having an oil sump formed therein; a stationary shaft fixedly mounted in the housing, a longitudinal bore formed in the shaft; and a motor mounted...
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6688863 |
Oil leak prevention structure of vacuum pump
A vacuum pump draws gas by operating a gas conveying body in a pump chamber through rotation of a rotary shaft. The vacuum pump has an oil housing member, a stopper and a circumferential wall...
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6663367 |
Shaft seal structure of vacuum pumps
A Roots pump rotates a plurality of rotors by a pair of rotary shafts to draw gas. Each rotary shaft extends through a rear housing member of the Roots pump. An annular shaft seal is fitted around...
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6551082 |
Oil free type screw compressor
In an oil-free type screw compressor including a low-pressure-stage compressor main body and a high-pressure-stage compressor main body, when the power of an motor is transmitted to an oil pump via...
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6544020 |
Cooled screw vacuum pump
A cooled screw vacuum pump has a housing ( 4 ) two rotating systems ( 5, 6 ) consisting each of a screw rotor ( 5 ) and a shaft ( 6 ), a floating device supporting the rotors having, on each shaft,...
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6503070 |
Rotary piston engine having an oil system for lubrication and cooling
A trochoidal design rotary piston engine design has a rotary piston housing with a double curve inner contour and triangular type rotary pistons. Sliding bearings distribute lubricating oil from a...
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6497563 |
Dry-compressing screw pump having cooling medium through hollow rotor spindles
A dry-compressing screw pump in the form of a two-shaft positive displacement pump. A first and a second rotor spindle are disposed parallel to each other. The rotor spindles are hollow. A cooling...
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6474965 |
Rotary piston engine having a cogwheel pump and an oil metering pump
A trochoidal design rotary piston engine design has an external axis cogwheel oil pump which has a smaller diameter drive cogwheel which drives a larger diameter size cogwheel where the larger...
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6416296 |
Reciprocating hermetic compressor
A reciprocating hermetic compressor, of the type including a rotor with permanent magnets and having its tubular vertical shaft ( 5 ) provided radially externally to the internal surface thereof...
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6406281 |
Screw-type pumping unit for treatment of fluids in several phases
A screw-type pumping unit ( 51 ) for treatment of fluids in several phases comprises a case ( 54 ) which contains a pumping chamber ( 62 ), inside which there are accommodated at least two screws (...
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6361296 |
Scroll type compressor having a gap that collects and supplies oil to an oil supply path or the eccentric bearing
The present invention provides a scroll-type compressor that can supply sufficient lubricating oil without the occurrence of seizure of bearing for an orbiting scroll. In this scroll-type...
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6264446 |
Horizontal scroll compressor
A vertical compressor is converted to a horizontal compressor by laying the vertical compressor on its side and locating it within the standard shell of a larger vertical compressor. The end caps...
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6257837 |
Variable oil flow regulator and method therefor
A variable oil flow regulator for minimizing noise generated typically by an oil-injected rotary screw compressor when the compressor transitions from an on-load mode for compressing fluid to an...
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6227828 |
Gear pump for use in an electrically-operated sealed compressor
A gear pump is used in an electrically-operated sealed compressor. The compressor includes a compression mechanism, an electric motor for driving the compression mechanism, and a crankshaft for...
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6210137 |
Scroll fluid machine
A scroll fluid machine having a lubrication pump provided between sliding contact surfaces of an orbiting scroll member and a thrust bearing in a casing. The pump has an orbiting member...
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6210135 |
Internal combustion rotary engine
An internal combustion rotary engine includes a stationary, centrally located manifold having an intake and an exhaust port. Inner and outer rotor assemblies are provided which rotate in a common...
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6196814 |
Positive displacement pump rotatable in opposite directions
A compressor assembly including a compression mechanism, a rotating crankshaft operably coupled to the compression mechanism, the crankshaft provided with a longitudinally-extending oil conveyance...
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6190149 |
Vacuum pump oil distribution system with integral oil pump
An oil distribution system for machinery such as a vacuum pump is disclosed. The system features an auxiliary oil pump integrally mounted adjacent to one end of the vacuum pump's drive shaft. The...
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6149414 |
Oil-sealed vane-type rotary vacuum pump with an oil pump
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6135738 |
Scroll compressor having a discharge port in the moveable scroll
In a scroll compressor (A) configured such that an oil is supplied to a compression chamber (14) between fixed and movable scrolls (10), (11) and to bearings (28), (29) for a crank shaft (8), an...
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6129531 |
Open drive scroll machine
An open drive scroll compressor had a unique lubrication system which includes a vane type oil pump attached to an outer diameter of the drive shaft of the compressor. The oil pump draws oil from...
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6079967 |
Fluid compressor
A fluid compressor comprises a sealing case, an oil reservoir formed to an inner bottom portion of the sealing case, in an installed state, for storing an lubricating oil and a compression...
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6071100 |
Scroll compressor having lubrication of the rotation preventing member
A scroll compressor includes a fixed scroll and an orbiting scroll which define therebetween a plurality of compression chambers for compressing fluid introduced via a suction port. The orbiting...
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6050794 |
Compressor having a pump with two adjacent rocking rotors
A high-performance compressor is capable of preventing inadequate oil feed even if the compressor tilts or foams and it is also capable of reducing the amount of oil discharged. The compressor has...
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6012911 |
Scroll type compressor having an oil supply path for the eccentric bearing
The present invention provides a scroll-type compressor that can supply sufficient lubricating oil without the occurrence of seizure of bearing for an orbiting scroll. In this scroll-type...
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5947709 |
Scroll compressor with oiling mechanism
An oil groove is provided in a space surrounded with the outer peripheral portion of an end plate of a revolving scroll, a stationary scroll and a frame on the inner surface of the frame, and...
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5931649 |
Scroll-type machine having a bearing assembly for the drive shaft
A scroll type machine particularly suited for use as a refrigeration compressor is disclosed which includes a bearing assembly for non-adjustably rotatably supporting a drive shaft. The bearing...
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5899667 |
Fluid compressor with seal scavenge and method
A fluid compressor including a compression module driven by a prime over, a separator tank having a separation chamber, a scavenge flow connector having a T-shaped housing that is adapted to...
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5885066 |
Scroll compressor having oil bores formed through the crank shaft
In a scroll compressor, a gas purge bore is formed to extend from an oil bore penetrating a drive shaft of the compressor, causing coolant gas to be expelled out with rising of lubricating oil...
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