Class / Patent application number | Description | Number of patent applications / Date published |
418550500 | With biasing means, e.g., axial or radial | 40 |
20080219872 | SCROLL MACHINE HAVING COUNTERWEIGHTS WITH CHANGEABLE CAVITY - A balancing system for different compressors utilizes a counterweight having a common exterior configuration. The mass of the counterweight is optimized for each compressor by changing the size of a recess located in the counterweight. In one embodiment, the recess is an arcuately shaped recess; and in another embodiment, the recess is a plurality of holes. | 09-11-2008 |
20080240957 | SCROLL FLUID MACHINE - The object is to provide a scroll fluid machine in which relative revolving motion is produced between two scrolls engaging with each other without using conventional Oldham coupling or pin crank type mechanism which has sliding parts. The scroll compressor | 10-02-2008 |
20090081062 | SCROLL COMPRESSOR WITH HIGH SIDE TO LOW SIDE OIL BLEED VALVE - A scroll compressor is provided with an oil bleed valve that selectively communicates a discharge pressure chamber to a suction pressure chamber. The oil bleed valve controls flow of hot oil through a passage and onto a safety shutoff switch for an electric motor. | 03-26-2009 |
20100196184 | SCROLL COMPRESSOR WITH BACK PRESSURE POCKET RECEIVING DISCHARGE PRESSURE FLUID - A face of a base of an orbiting scroll member is aligned with a thrust bearing. The thrust bearing includes a back pressure pocket and a seal for sealing the back pressure pocket to entrap a compressed fluid. There is a tap for tapping fluid at a discharge pressure into said back pressure pocket. | 08-05-2010 |
20100233002 | SCROLL COMPRESSOR - A scroll compressor | 09-16-2010 |
20110070116 | SCROLL FLUID MACHINE - To provide a higher sealing capability irrespective of the pressure difference between compression chambers, lips having leading ends extended toward the inner surface of a recessed groove are formed. At least some of the lips have a base end that is shaped to reduce rigidity against extension of the lips. | 03-24-2011 |
20110081269 | SCROLL COMPRESSOR - A scroll compressor includes an orbiting scroll member, a non-orbiting scroll member, a spacing block, and an annular pressure piece. The non-orbiting scroll member is disposed on the orbiting scroll member. The spacing block has a first annular recess and at least one first through hole. The spacing block is disposed on the non-orbiting scroll member. The first through hole is located within the first annular recess and penetrates the spacing block. The annular pressure piece has a second annular recess and at least one second through hole. The second through hole is located within the second annular recess and penetrates the annular pressure piece. The annular pressure piece is accommodated within the first annular recess. One side disposed with the second annular recess of the annular pressure piece faces the spacing block. The annular pressure piece is located between the spacing block and the non-orbiting scroll member. | 04-07-2011 |
20110293456 | SCROLL MACHINE - A compressor includes a shell, a compression mechanism, and an axial biasing system. The shell defines a first passage forming a first discharge passage. The compression mechanism includes first and second scroll members meshingly engaged with one another and forming a series of compression pockets. The first scroll member includes a second discharge passage. The axial biasing system includes a biasing member having first and second surfaces generally opposite one another. The first surface includes a first radial surface area exposed to an intermediate pressure from one of the compression pockets and a second radial surface area exposed to a discharge pressure. The second surface includes a third radial surface area exposed to the intermediate pressure. The biasing member is axially displaceable between first and second positions. The biasing member axially engages the first scroll member when in the first position. | 12-01-2011 |
20120177522 | SCROLL COMPRESSOR HAVING A BACK PRESSURE ADJUSTMENT DEVICE - A scroll compressor includes a back pressure chamber formed at the rear of a swivel scroll to support the swivel scroll, the swivel scroll swiveling while engaging with a stationary scroll to compress a refrigerant, and a back pressure adjustment device to automatically apply first middle pressure or second middle pressure lower than the first middle pressure to the back pressure chamber based on a compression ratio. | 07-12-2012 |
20120177523 | SCROLL COMPRESSOR WITH SPLIT TYPE ORBITTING SCROLL - A scroll compressor is provided. The scroll compressor may include a case; a fixed scroll installed in the case; a wrap portion configured to form a compression chamber by being engaged with the fixed scroll; a base portion coupled to the wrap portion so as to be movable with the fixed scroll but not rotate in a circumferential direction; a drive motor coupled to a rear surface of the base portion, and configured to eccentrically rotate the base portion and the wrap portion; and a main frame installed in the case, and configured to support the base portion. A back pressure chamber that communicates with the compression chamber may be formed between the wrap portion and the base portion where a pressure of the back pressure chamber corresponds to a discharge pressure or an intermediate pressure between the suction pressure and the discharge pressure. | 07-12-2012 |
20130121866 | SCROLL COMPRESSOR - A scroll compressor is provided. The scroll compressor may include guide holes formed at one of a wrap portion or a base portion, and guide pins inserted into the guide holes formed at the other of the wrap portion or the base portion to couple the wrap portion and the base portion to each other. Such guide pins and guide holes may be easily processed to reduce fabrication costs and reduce or eliminate unstable behavior of the orbiting scroll. As the guide pins and the guide holes have a circular cross section, abrasion of the guide pins or the guide holes may be prevented. | 05-16-2013 |
20130171017 | ROTARY COMPRESSOR WITH DUAL ECCENTRIC PORTION - A rotary compressor including two eccentric portions is provided. The rotary compressor includes: a casing; a cylinder provided within the casing and providing a compression space; a rotational shaft rotatably disposed with respect to the cylinder; a partition plate rotating together with the rotational shaft and dividing the compression space of the cylinder into first and second compression chambers disposed up and down; first and second eccentric portions provided in upper and lower portions of the partition plate and being eccentric in different directions with respect to a rotation center of the rotational shaft so as to rotate together with the rotational shaft; and a driving motor rotatably driving the rotational shaft. | 07-04-2013 |
20130251577 | Scroll Compressor With Slider Block - A scroll compressor that includes a housing and scroll compressor bodies disposed in the housing. The scroll bodies include a first scroll body and a second scroll body. The first and second scroll bodies have respective bases and respective scroll ribs that project from the respective bases. Further, the scroll ribs mutually engage such that the second scroll body is movable relative to the first scroll body to compress fluid. A drive shaft has an eccentric drive pin configured to engage a drive hub on the second scroll body. The scroll compress also includes a slider block that fits over the drive pin. The slider block has a first drive surface configured to engage a second drive surface of the drive pin. In particular embodiments, the slider block can tilt about one or more edges of the second drive surface when the drive shaft is deflected under load. | 09-26-2013 |
20140044582 | SCROLL COMPRESSOR HAVING ADJUSTABLE SPACERS - A scroll compressor | 02-13-2014 |
20140072467 | COMPRESSOR AND OIL-COOLING SYSTEM - A compressor may include a shell, a compression mechanism, a crankshaft, a bearing support, and a lubricant sump. The compression mechanism may be disposed in the shell and may compress a working fluid. The crankshaft may be disposed at least partially in the shell and may drivingly engage the compression mechanism. The bearing support may rotatably support the crankshaft. The lubricant sump may retain a volume of lubricant and may be disposed between the bearing support and the compression mechanism. | 03-13-2014 |
20140086777 | SYNTHETIC RESIN BEARING AND SCROLL COMPRESSOR HAVING THE SAME - A synthetic resin bearing and a scroll compressor using the same are provided. In the synthetic resin bearing as a journal bearing fixed to an orbiting scroll or a main frame and relatively rotated with respect to a rotational shaft in a scroll compressor, the journal bearing is made of a PEEK material, and a thickness t of the journal bearing is smaller than a thickness t1 with which a temperature in a contact surface thereof with the rotational shaft during an operation of the scroll compressor corresponds to a glass transition temperature. | 03-27-2014 |
20140119971 | Sealed Scroll Compressor for Helium - A suction chamber and the oil injection port are linked, under a certain range of revolution angle, via a suction working chamber formed in the radially outer side by a orbiting scroll outer curve and a fixed scroll inner curve under a certain range of revolution angle. An opening of the oil injection port is provided on a bottom surface between teeth of the fixed scroll so that the suction working chamber formed, in a radially inner side, by a orbiting scroll inner curve and a fixed scroll outer curve and the suction chamber are positioned not to be linked with the oil injection port. | 05-01-2014 |
20140154124 | SCROLL COMPRESSOR WITH VARIABLE VOLUME RATIO PORT IN ORBITING SCROLL - A compressor may include a first scroll member, a second scroll member and a drive shaft. The first scroll member may include a first end plate defining a first discharge port and a first spiral wrap extending from the first end plate. The second scroll member may include a second end plate defining a first variable volume ratio port and a second spiral wrap extending from the second end plate and meshingly engaged with the first spiral wrap and forming compression pockets. The variable volume ratio port may be located radially outward relative to the first discharge port and in communication with a first compression pocket. The drive shaft may be engaged with the second scroll member and driving orbital displacement of the second scroll member relative to the first scroll member. | 06-05-2014 |
20140219850 | COMPRESSOR BEARING ASSEMBLY - A compressor is provided that may include a drive shaft, a compression mechanism, a bearing and an unloader. The drive shaft may include a main body and a crank pin extending from the main body. The compression mechanism may include first and second members. The crank pin may drivingly engage the second member and cause motion of the second member relative to the first member. The bearing may rotatably supporting the main body of the drive shaft. The unloader may rotatably engage the bearing and slidably engage the main body. | 08-07-2014 |
20140271307 | SCROLL COMPRESSOR HAVING A SCROLL SUPPORTER AND/OR MOVEMENT LIMITER - A scroll compressor having a scroll supporter and/or movement limiter is provided. The scroll compressor may include a casing, a main frame fixedly installed within the casing, a first scroll rotatably supported by the main frame, a second scroll supported by the main frame, such that the second scroll is movable in a vertical direction with respect to the first scroll, a guide that guides movement of the second scroll in the vertical direction, while preventing the second scroll from being rotated in an axial direction; and a movement limiter disposed on an inner wall of the casing and separated from the second scroll, the movement limiter being configured to limit a movement distance of the second scroll in an upward direction. | 09-18-2014 |
20140294643 | Refrigerant Compressor - A refrigerant compressor includes a compressor mechanism part | 10-02-2014 |
20140348681 | SCROLL-TYPE COMPRESSOR AND CO2 VEHICLE AIR CONDITIONING SYSTEM HAVING A SCROLL-TYPE COMPRESSOR - A scroll-type compressor for a CO | 11-27-2014 |
20140348682 | SCROLL-TYPE COMPRESSOR AND CO2 VEHICLE AIR CONDITIONING SYSTEM HAVING A SCROLL-TYPE COMPRESSOR - A scroll-type compressor for a CO | 11-27-2014 |
20140356209 | VARIABLE SPEED SCROLL COMPRESSOR - A compressor is provided and may include a driveshaft and an orbiting scroll member driven by the driveshaft. The orbiting scroll member may include an end plate, a spiral wrap extending from the end plate, and a chamber formed by the orbiting scroll member and disposed on an opposite side of the end plate than the spiral wrap. A counterweight may be fixed for rotation with the driveshaft and may be received within the chamber of the orbiting scroll member. | 12-04-2014 |
20140356210 | SCROLL COMPRESSOR - A scroll compressor is provided in which a boss of an orbiting scroll is inserted into and coupled to a boss coupling recess of a crank shaft, so that friction loss of a bearing portion of the crank shaft may be reduced, compression efficiency and reliability of the compressor may be enhanced, and noise and material costs may be reduced. A bush bearing may be formed as a coating on the boss of the orbiting scroll, so that a thickness of the bearing portion of the crank shaft may be reduced. Since an outer circumferential surface of the bearing portion is in contact with an inner circumferential surface of the boss coupling recess, damage to the bearing portion may be prevented. | 12-04-2014 |
20140356211 | COMPRESSOR HAVING OUTPUT ADJUSTMENT ASSEMBLY - A compressor includes a housing, a first scroll member, a second scroll member and a valve assembly. The first scroll member is positioned within the housing and includes a first end plate portion and a second end plate portion coupled to the first end plate portion and having a first spiral wrap extending therefrom. The first end plate portion and the second end plate portion define a discharge passage. The second scroll member is positioned within the housing and includes a second spiral wrap meshingly engaged with the first spiral wrap. The valve assembly is supported by at least one of the first end plate portion and the second end plate portion at a location radially outward from the discharge passage. | 12-04-2014 |
20150010417 | SCROLL COMPRESSOR - Disclosed herein is a scroll compressor in which refrigerant is compressed in a compression chamber while the volume of the compression chamber is gradually decreased due to relative rotation of a fixed scroll and an orbiting scroll. In accordance with the disclosure, the scroll compressor is provided in which a pressure in a back-pressure chamber is managed in connection with a discharge refrigerant pressure so that the orbiting scroll is supported by the pressure in the back-pressure chamber without a power loss or an inner leak in an overall pressure section of a scroll. | 01-08-2015 |
20150037192 | SCROLL COMPRESSOR WITH PRESSURIZED OIL BALANCE PISTON - A scroll compressor includes an orbiting scroll member disposed within a compressor housing. The orbiting scroll member has a substantially circular baseplate and a generally spiral wrap extending from its base. A first seal is disposed proximal to the outer periphery of the orbiting scroll baseplate to provide an external seal between the baseplate and the housing. A second seal is disposed radially inward from the first seal to provide an internal seal between the baseplate and the housing. A space between the internal seal and the external seal defines a balance piston chamber. The balance piston chamber is pressurized via a high or intermediate pressure oil source to reduce thrust loading on the baseplate caused by an axial pressure differential across the baseplate. | 02-05-2015 |
20150056091 | SCROLL COMPRESSOR - A diameter of a main bearing member | 02-26-2015 |
20150093276 | Scroll Type Fluid Machine - A scroll type fluid machine, for improving a dimensional accuracy with easy working, includes a fixed scroll, an orbiting scroll arranged so as to oppose to the fixed scroll and executing an orbiting motion, a driving shaft driving the orbiting scroll, an eccentric shaft decentered from the driving shaft and connected to the orbiting scroll, and an eccentric bush connecting the driving shaft and the eccentric shaft to each other, in which the eccentric bush includes a main hole into which the driving shaft is fitted and an eccentric hole into which the eccentric shaft is fitted, and the eccentric hole is decentered with respect to the main hole. | 04-02-2015 |
20150104342 | SCROLL-TYPE COMPRESSOR - The orbiting base plate | 04-16-2015 |
20150118089 | COMPRESSOR WITH UNLOADER COUNTERWEIGHT ASSEMBLY - A compressor is provided and may include a shell, an orbiting scroll, a driveshaft and an unloader counterweight. The orbiting scroll may be disposed within the shell and include a boss portion. The driveshaft may include an eccentric pin and rotate about a longitudinal axis. The unloader counterweight assembly may include a first, a second end, and a longitudinal opening extending therebetween. The eccentric pin of the driveshaft may be disposed within the longitudinal opening at the first end of the unloader counterweight assembly. The boss portion of the orbiting scroll may be disposed within the longitudinal opening at the second end of the unloader counterweight assembly | 04-30-2015 |
20150118090 | COMPONENTS FOR COMPRESSORS HAVING ELECTROLESS COATINGS ON WEAR SURFACES - Carbon dioxide compressors having one or more coatings with wear surfaces having electroless surface coatings are provided. Alternatively, propane compressors are contemplated having wear surface coatings. The coating is electrolessly applied and may comprise nickel and wear resistant particles, such as boron nitride. The electroless surface coatings for use with compressor machines improve corrosion and wear resistance, as well as anti-friction properties for compressors processing CO | 04-30-2015 |
20150337839 | SCROLL COMPRESSOR WITH REDUCED UPSETTING MOMENT - A scroll compressor includes a pressing mechanism, a pushback mechanism and an adjustment mechanism. The pressing mechanism applies a pressing force toward a fixed scroll to the back side of an end plate portion of an orbiting scroll. The pushback mechanism applies a pushback force separating the orbiting scroll from a fixed scroll to the front of the orbiting scroll. The adjusting mechanism has a low-pressure portion filled with a fluid of a lower pressure than the discharge pressure of the compression mechanism, and a communicating groove formed in a sliding surface of an outer peripheral portion of the fixed scroll so as to communicate with the low-pressure portion in a first rotational angle range in order to reduce an upsetting moment of the orbiting scroll, and to be blocked from the low-pressure portion in a second rotational angle range other than the first rotational angle range. | 11-26-2015 |
20150345493 | VARIABLE VOLUME RATIO SCROLL COMPRESSOR - A compressor may include a scroll member, a hub, a discharge valve and a bypass valve. An end plate of the scroll member includes a recess, a discharge passage in communication with the recess, and a bypass passage in communication with the recess and disposed radially outward relative to the discharge passage. The hub may be received in the recess and may include a central opening in communication with the discharge passage and the bypass passage. The discharge valve may be disposed between the hub and the end plate and may control fluid flow through the discharge passage. The bypass valve may be disposed between the hub and the end plate and may be movable between a first position restricting fluid flow through the bypass passage and a second position allowing fluid to flow through the bypass passage, around the discharge valve and through the central opening. | 12-03-2015 |
20150361983 | COMPRESSOR BEARING AND UNLOADER ASSEMBLY - A compressor is provided that may include a drive shaft, a compression mechanism, a bearing and an unloader. The drive shaft may include a main body and a crank pin extending from the main body. The compression mechanism may include first and second members. The crank pin may drivingly engage the second member and cause motion of the second member relative to the first member. The bearing may rotatably supporting the main body of the drive shaft. The unloader may rotatably engage the bearing and slidably engage the main body. | 12-17-2015 |
20160032924 | CAPACITY MODULATED SCROLL COMPRESSOR - A compressor may include a first scroll member having a first spiral wrap, a first chamber, and a first aperture. A second scroll member may include a second spiral wrap engaged with the first spiral wrap to form a series of compression pockets and a second aperture. The first aperture may be in communication with a first of the compression pockets to provide communication between the first compression pocket and the first chamber. The second aperture may be in communication with a second of the compression pockets. A capacity modulation assembly may include a first piston preventing communication between the first aperture and a first passage when in a first position and providing communication when in a second position. A second piston may prevent communication between the second aperture and a third passage when in the first position, and provide communication when in a second position. | 02-04-2016 |
20160076543 | Compressor Having Capacity Modulation Assembly - A compressor may include a shell, first and second scrolls, a seal assembly, a modulation control chamber, and a modulation control valve. The first scroll may include a first end plate having a biasing passage extending therethrough. The seal assembly may isolate a discharge pressure region from a suction pressure region. The seal assembly and the first scroll may define an axial biasing chamber therebetween that communicates with the axial biasing chamber and a first pocket between the first and second scrolls. The modulation control chamber may be fluidly coupled with the biasing chamber by a first passage. The modulation control valve may be fluidly coupled with the modulation control chamber by a second passage and movable between a first position allowing communication between the second passage and the suction pressure region and a second position restricting communication between the second passage and the suction pressure region. | 03-17-2016 |
20160115954 | Compressor - A compressor may include first and second scrolls, a hub plate and a valve. The first scroll may include an end plate defining first and second sides, a primary discharge passage extending therethrough, and a secondary discharge passage extending therethrough and located radially outward from the primary discharge passage. The hub plate may be mounted to the first scroll and may include first and second opposite sides and a hub discharge passage in fluid communication with the primary discharge passage. The first side of the hub plate may face the second side of the end plate and may include a valve guide extending axially toward the end plate adjacent the hub discharge passage. The valve member may be secured on the valve guide for axial movement between open and closed positions to respectively allow and restrict fluid communication between the secondary discharge passage and the hub discharge passage. | 04-28-2016 |
20160195090 | SCROLL COMPRESSOR | 07-07-2016 |