| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 418550200 | Having specific wrap or end plate, e.g., shape, material, coating | 87 |
| 20080247895 | INJECTION MOLDED SCROLL FORM - Scrolls made from injection molding processes are disclosed. The scroll components have a tip seal groove defined within an involute portion of the scroll. Bearing and tip seal engaging plates are integrally molded within base members of the scroll. | 10-09-2008 |
| 20080273998 | Fluid machine - In a spiral wrap of at least a movable scroll, grooves are formed at given intervals to extend from a halfway point of a top face of the spiral wrap through the lateral face of the spiral wrap, substantially perpendicular to the lateral face of the spiral wrap in a direction of formation of the spiral wrap. | 11-06-2008 |
| 20080317619 | TANDEM COMPRESSOR SYSTEM AND METHOD - A compressor system including a first compressor and a second compressor. The first and second compressors each include a shell, a compression mechanism disposed within the shell, and a drive member adapted to drive the compression mechanism. A discharge tube assembly interconnects the first compressor and the second compressor, and the discharge tube assembly includes an inlet portion adjacent the first compressor that is inclined relative to another inlet portion adjacent the second compressor. The inlet portion that is inclined is adapted to prevent a backflow of oil through the discharge tube assembly. | 12-25-2008 |
| 20090022613 | Asynchronous non-constant-pitch spiral scroll-type fluid displacement machine - A scroll-type spiral fluid displacement machine having at least one pair of interfitting scroll elements. The scroll vanes of the scroll elements are constructed upon a base line spiral defined by the equation: | 01-22-2009 |
| 20090028736 | ORBIT CONTROL DEVICE FOR A SCROLL COMPRESSOR - An orbit control device for a scroll compressor is disclosed including at least one pin disposed in an orbit scroll, a support plate having at least one support hole formed therein, and a guide plate having at least one guide hole formed therein. Contact of an outer surface of the pin with an inner surface of the guide hole militates against a deviation by the orbit scroll from a desired trajectory. | 01-29-2009 |
| 20090035167 | STEPPED SCROLL COMPRESSOR WITH STAGED CAPACITY MODULATION - A scroll compressor has a stepped wrap such that there is a greater height outer portion and a lesser height more central portion. Bypass ports are associated with the transition zone between the higher and lesser height portions. By providing the bypass port in a stepped scroll compressor, greater reductions in capacity can be achieved than have been provided in the prior art. | 02-05-2009 |
| 20090068047 | Closed Type Fluid Machine - An electric scroll compressor ( | 03-12-2009 |
| 20090074600 | ROTARY COMPRESSOR - A bolt hole receiving a fixing bolt is formed in a portion of an end plate overlapping an annular piston or a fixed wrap as viewed in a thickness direction of the end plate to open at the back face of the end plate. In fixing a discharge valve o the end plate, the fixing bolt is screwed into the bolt hole. | 03-19-2009 |
| 20090087332 | Compressor Having Improved Sealing Assembly - A compressor may include a shell, a bearing housing assembly located within and secured to the shell, a compression mechanism supported on the bearing housing assembly, a partition extending over the compression mechanism, and an annular seal assembly. The partition may be fixed to the shell and may abut an axial end surface of the bearing housing assembly to control a maximum axial distance between the partition and the compression mechanism. The annular seal may be sealingly engaged with the compression mechanism and the bearing housing assembly and may have a generally L-shaped cross-section including a first leg extending generally laterally between the compression mechanism and the partition. The first leg may have an axial thickness that is greater than the maximum axial distance. | 04-02-2009 |
| 20090110580 | Scroll type fluid machine - The present invention provides a scroll type fluid machine realizing reduced attachment space in a casing and improvement in workability at the time of assembly and the like by using a plurality of ball coupling mechanisms. A plurality of ball coupling mechanisms are disposed between a casing and a rear side of an orbiting scroll. Each of the ball coupling mechanisms includes first and second thrust receivers (reception plates), a sphere, and a cylindrical ring. A thrust load to be applied to an end plate of the orbiting scroll is received between the first and second thrust receivers (reception plates) and the sphere. The cylindrical ring disposed between the first and second thrust receivers displays a so-called rotation preventing effect in such a manner that its outer peripheral surface makes a rolling contact with inner peripheral surfaces of cylindrical portions in association with an orbiting motion of the orbiting scroll. | 04-30-2009 |
| 20090116988 | Scroll-Type Fluid Machine - A scroll-type fluid machine has a fixed scroll ( | 05-07-2009 |
| 20090185932 | Scroll Compressor Build Assembly - A scroll compressor build assembly is provided. An outer housing includes multiple shell sections that interfit to provide internal steps that provide seating surfaces. One or both bearing members can use the internal seats. The outer housing may comprise three shells that telescopically interfit and that can be welded with circumferential welds. | 07-23-2009 |
| 20090257900 | Shaft coupling for scroll compressor - A coupling mechanism for a scroll compressor comprises an orbiting scroll disk, a retention bolt, a bearing shaft and a retention nut. The orbiting scroll disk includes a first face configured to engage a stationary scroll disk to compress a working fluid, and a second face having a hub. The retention bolt is inserted into the hub. The bearing shaft is fit onto the retention bolt and includes a bearing surface for engaging a drive bushing of a drive shaft. The retention nut is threaded onto the retention bolt to retain connection of the bearing shaft with the orbiting scroll disk. | 10-15-2009 |
| 20090297380 | Compressor having capacity modulation system - A compressor includes orbiting and non-orbiting scroll members meshingly engaged to form a series of compression pockets, including first pockets when the orbiting scroll member is in a first position. A first porting in the non-orbiting scroll member communicates with the first pockets during a portion of a compression cycle. The first pockets include a set of radially outermost pockets located radially inward relative to the first porting and isolated from communication with the first porting during the compression cycle. The first porting is aligned with a spiral wrap of the orbiting scroll member at a location radially outward from and directly adjacent the first pockets when the orbiting scroll member is in the first position. Additional porting communicates with each of the compression pockets located radially outward relative to the first pockets when the orbiting scroll member is in the first position. | 12-03-2009 |
| 20090317275 | SCROLL COMPRESSOR - Provided is a scroll compressor that is capable of three-dimensional compression, ensuring a required wrap strength while increasing a shoulder section height of a spiral wrap, and facilitating wrap processing. The scroll compressor includes shoulder sections at an end surface and a bottom surface of spiral wraps of a paired fixed scroll member and revolving scroll member and configured to be capable of three-dimensional compression in a circumferential direction and a height direction of the spiral wraps by setting a spiral wrap height of the spiral wraps further toward the outside of the shoulder sections greater than the spiral wrap height of the inward side, and wherein the shoulder sections provided on the end surface and the bottom surface at the spiral wrap are constructed of a plurality of shoulder sections, and the heights of the shoulder sections are set to heights in which base stresses at the shoulder sections are substantially equal. | 12-24-2009 |
| 20100021329 | SCROLL COMPRESSOR - A scroll compressor that suffers no decrease in compression performance due to leakage resulting from a twisting assembly error is provided. This scroll compressor includes a fixed scroll and an orbiting scroll, each including a spiral wrap protruding from an end plate and having the same tooth thickness (Tr) and the same base-circle radius (b) defining an involute surface. The fixed scroll and the orbiting scroll are offset from each other by an orbiting radius (ρ) and mesh such that the respective wraps face each other with a phase shift of 180°. The orbiting scroll revolves/orbits along a circular orbit with the orbiting radius (ρ) to compress a gas while a rotation-preventing mechanism prevents rotation of the orbiting scroll. The relationship between the involute surfaces of the spiral wraps of the two scrolls and the dimensions, dimensional tolerance, and assembly standards of the rotation-preventing mechanism are determined so that the median value of an allowable angle of rotation (φ) agrees with an upright position of the orbiting scroll. | 01-28-2010 |
| 20100092318 | Scroll compressor - Intended is to provide a scroll compressor capable of performing three-dimensional compressions, which can optimize a tip clearance in operation while considering a thermal expansion and a pressure deformation and which can reduce a compression leakage to improve a compression efficiency thereby to realize a high performance. The leading end faces ( | 04-15-2010 |
| 20100111740 | SCROLL-TYPE FLUID DISPLACEMENT APPARATUS WITH IMPROVED COOLING SYSTEM - An axial air cooling system for scroll-type positive fluid displacement apparatus provides needed cooling. The system includes an axial fan and centrifugal pump and internal cooling air channels inside parts integrating main housing, base housing and motor housing with their corresponding shell parts by cooling fins. The cooling air channel also includes passages inside the orbiting scroll, shaft central hole and gaps inside stator slots and winding. Heat pipes are installed inside the fixed and orbiting scrolls to conduct heat from inside of the apparatus to the peripheral condenser portion of the heat pipes to be cooled by the cooling air. | 05-06-2010 |
| 20100111741 | SCROLL COMPRESSOR - A scroll compressor comprises a fixed scroll, an orbiting scroll engaged with the fixed scroll to form a compression chamber therebetween, a back pressure chamber arranged at a back side of an end plate of the orbiting scroll, a back pressure hole formed in the end plate of the orbiting scroll to form a fluidal communication between the compression chamber and the back pressure chamber, and a release valve mechanism for discharging the fluid from the compression chamber to the discharge space when a pressure in the compression chamber is higher than the pressure in the discharge space, wherein the back pressure hole and the release flow path are arranged to prevent both of the fluidal communication and the another fluidal communication from being formed simultaneously. | 05-06-2010 |
| 20100135836 | Scroll Compressor Having Capacity Modulation System - A compressor may include a housing, orbiting and non-orbiting scroll members, a first porting, and a second porting. The first and second porting may each extend through the end plate of the non-orbiting scroll member and may each have an angular extent of at least twenty degrees. An ending point of the first porting may be rotationally spaced from a starting point of the first porting by the angular extent in a rotational direction of a drive shaft of the compressor. An ending point of the second porting may be rotationally spaced from a starting point of the second porting by the angular extent in a rotational direction opposite the rotational direction of the drive shaft. The ending point of the second porting may be rotationally spaced from the starting point of the first porting by less than one hundred and eighty degrees in the rotational direction of the drive shaft. | 06-03-2010 |
| 20100158731 | Compressor having capacity modulation system - A compressor includes a first porting extending through an end plate of an orbiting scroll member at an angular extent of at least twenty degrees and first and second spiral wraps defining modulated capacity pockets when the orbiting scroll is in a first position. The first modulated capacity pockets may include a set of radially outermost compression pockets located radially inward relative to the first porting and isolated from communication with the first porting during an entirety of the compression cycle. The first porting may align with the second spiral wrap at a location radially outward from and directly adjacent the first modulated capacity pockets when the orbiting scroll member is in the first position. | 06-24-2010 |
| 20100172780 | Scroll Compressor - An object of the present invention is to provide a scroll compressor capable of three-dimensional compression, which can prevent performance deterioration and performance variation due to gas leakage occurring on an outer peripheral side of a step portion of a spiral wrap and can achieve performance stabilization and performance improvement. In a scroll compressor configured to be capable of three-dimensional compression in a circumferential direction and a height direction of spiral wraps, in which top surfaces and bottom surfaces of spiral wraps ( | 07-08-2010 |
| 20100178187 | VACUUM PUMP - A dry vacuum pump comprises a stator component and at least one rotor component. To improve the tolerance of the pump to corrosive gases passing through the pump, the stator component and/or said at least one rotor component are formed from silicon-molybdenum (SiMo) ductile iron. | 07-15-2010 |
| 20100202910 | COMPRESSION MECHANISM AND SCROLL COMPRESSOR INCLUDING THE SAME - A compression mechanism is configured to be used in a scroll compressor. The compression mechanism includes a fixed scroll and a movable scroll. One of the fixed scroll and the movable scroll is a cast iron molding fabricated through semi-molten die casting, and the other of the fixed scroll and the movable scroll is a grey iron casting. | 08-12-2010 |
| 20100202911 | SCROLL-TYPE POSITIVE DISPLACEMENT APPARATUS WITH PLASTIC SCROLLS - At least one of the scroll members is composed of a metallic insert having substantial the same configuration of the scroll member, i.e. an end plate and spiral wraps fixed to and extended from the end plate. The metallic insert has anchor holes and connecting holes for bonding the plastic coating layer on to the metallic insert. The anchor holes also serve as gas escaping passages during injection molding process. The mold has multiple poring gates to minimize the pressure gradients across the spiral wraps during the injection molding process. The metallic insert has also tubers sticking out from the tip of its spiral wraps. The tubers are firmly held by the mold in the injection molding process to prevent movement of the spiral wraps under the pressure from the injected plastic flow. The metallic inserts can be fully or partially coated by the plastic compound such that there is no metallic to metallic contact between the scroll members during operations. | 08-12-2010 |
| 20100209277 | SCROLL COMPRESSOR - The present invention relates to a scroll compressor. The scroll compressor is configured to have a discharge outlet ( | 08-19-2010 |
| 20100284845 | Scroll Fluid Machine with a Coating Layer - A scroll fluid machine that is capable of preventing a power loss and enhancing the degree of hermeticity of compression chambers. A plurality of outer peripheral projections are formed on an outer peripheral surface of a wrap portion of each scroll. An outer peripheral coating layer is formed on an outer peripheral surface of a wrap portion of a fixed scroll, and an inner peripheral coating layer is formed on an inner peripheral surface of the wrap portion. Each of the coating layers comprises: contact portions that make contact with the mating wrap portion; and non-contact portions that do not make contact with the mating wrap portion. In this way, the degree of hermeticity of the compression chambers can be enhanced by the contact portions, and power loss can be prevented by the non-contact portions. | 11-11-2010 |
| 20110027116 | POSITIVE DISPLACEMENT MACHINE ACCORDING TO THE SPIRAL PRINCIPLE - In a positive displacement machine for compressible media, having a spiral-shaped feed chamber ( | 02-03-2011 |
| 20110064596 | SCROLL COMPRESSOR - A scroll compressor is provided in which the amount of lubricant oil supply is appropriately controlled over a low to high rotational frequency range of the scroll compressor. The scroll compressor has an oil supply unit and an oil supply passage. The oil supply unit includes a small hole with a diameter not exceeding a seal ring width of the sealing part and a groove which are formed on the end plate of the boss portion on the back side of the orbiting scroll. As the orbiting scroll orbitally moves, oil in the high pressure hydraulic chamber pools in the small hole to be discharged, across the seal ring, into the back pressure chamber. The oil supply passage communicates between the high pressure hydraulic chamber and the back pressure chamber. | 03-17-2011 |
| 20110091342 | THERMALLY COMPENSATED SCROLL MACHINE - A compressor may include first and second scroll members and a compensation member. The first scroll member may include a first end plate and a first spiral wrap extending therefrom. The second scroll member may include a second end plate and a second spiral wrap. The second end plate may be positioned proximate to a distal end of the first spiral wrap. The first end plate may be positioned proximate to a distal end of the second spiral wrap. The compensation member may engage the first scroll member and having a first reaction to a temperature change causing the first scroll member to maintain a sealed relationship between the first end plate and the distal end of the second spiral wrap. | 04-21-2011 |
| 20110103990 | SCROLL COMPRESSOR - A scroll compressor is constructed by combining a stationary scroll and an orbiting scroll formed by erecting a scroll-shape wrap upright on a base plate meshing with each other. A scroll member constructing the stationary scroll or the orbiting scroll is constructed of an inner layer member | 05-05-2011 |
| 20110103991 | Scroll fluid machine - A fixed scroll board | 05-05-2011 |
| 20110194966 | SCROLL COMPRESSOR - A scroll compressor includes a housing; a fixed scroll fixed in the housing; an orbiting scroll that has an orbiting end plate on which a spiral orbiting wall is provided upright and that is supported in the housing so as to be able to orbit while being prevented from rotating, in a state where the orbiting wall is engaged with the fixed wall; a suction section that makes refrigerant containing lubricant flow into a suction chamber provided in the housing; and a plurality of supply flow paths that are provided on a sliding surface between the housing and the orbiting end plate and that are connected to the suction chamber. | 08-11-2011 |
| 20110206548 | COMPRESSOR INCLUDING VALVE ASSEMBLY - A compressor hub assembly may include a hub member, a valve retainer and a valve member. The hub member may include first and second portions. The first portion may define an annular hub wall for a compressor and may have a first inner diameter. The second portion may have a second inner diameter greater than the first inner diameter and may define a stepped region between the first and second portions. The valve retainer may be fixed to the hub member at an end of the second portion opposite the stepped region and may define a third inner diameter. The valve member may be located between the valve retainer in the stepped region and may have an outer diameter less than the second inner diameter and greater than the first and third inner diameters. | 08-25-2011 |
| 20110229360 | POWDER METAL SCROLL HUB JOINT - A scroll component including a spiral scroll wrap, a baseplate having a first major surface coupled to the scroll wrap and a second opposing major surface comprising a protruding pilot extending a distance from the baseplate, and a hub fastened to the baseplate adjacent to the protruding pilot. A method of forming a scroll compressor element is also provided. | 09-22-2011 |
| 20110243777 | SCROLL COMPRESSOR - [Object] To provide a scroll compressor capable of improving compression efficiency.
| 10-06-2011 |
| 20110318212 | SCROLL-TYPE REFRIGERATOR COMPRESSOR - This compressor comprises first and second volutes describing an orbital relative movement and each comprising a plate from which a spiral extends, the two spirals being engaged one inside the other and defining pairs of compression chambers of variable volume. The compressor has a housing formed in that surface of the plate of the first volute which is turned towards the spirals, which opens into one of the compression chambers, refrigerant delivery means leading into the housing, and a nonreturn device being mounted in the housing, the nonreturn device preventing communication between the delivery means and the compression chamber into which the housing opens in a first or closed position, and allowing communication between the delivery means and said compression chamber in a second or open position. | 12-29-2011 |
| 20120045357 | HIGH EFFIEIENCY SCROLL COMPRESSOR WITH SPIRAL COMPRESSOR BLADES OF UNEQUAL THICKNESS - The present invention provides a high efficiency scroll compressor with spiral compressor blades of unequal thickness, using unfolding logarithmic spirals configured to satisfy a gear engaging condition, that is, spirals of unequal thickness serve as compressor blades, thereby providing high gas compression ratio, and high compression efficiency, to achieve the objectives of energy conservation and carbon reduction. | 02-23-2012 |
| 20120107164 | VARIABLE DISPLACEMENT SCROLL COMPRESSOR - A stationary base plate includes a sub-bypass hole, which communicates between a suction chamber and a first compression chamber, and a main bypass hole, which communicates between the suction chamber and a second compression chamber. A rotational center of the orbiting scroll and the sub-bypass hole are located along a first imaginary line. The rotational center of the orbiting scroll is also located along a second imaginary line, which is perpendicular to the first imaginary line. The main bypass hole opens at a location of the stationary base plate, which is on a side of the second imaginary line where the sub-bypass hole is located, so that timing of communicating between the suction chamber and the first compression chamber with each other is deviated from timing of communicating between the suction chamber and the second compression chamber with each other. | 05-03-2012 |
| 20120148434 | Scroll Fluid Machine - Disclosed is a scroll fluid machine wherein a scroll unit achieves higher performance while maintaining reliability. The disclosed scroll fluid machine is provided with: a first actuation chamber ( | 06-14-2012 |
| 20120189480 | Scroll Fluid Machine - A scroll fluid machine includes: a casing; a fixed scroll having an end plate, a spiral wrap part provided on the end plate, and a flange provided outside the wrap part and fitted to the casing; and an orbiting scroll having an end plate and a spiral wrap part provided on the end plate with a plurality of compression chambers formed in a space up to the wrap part of the fixed scroll, which is provided to perform an orbiting motion, wherein the flange is provided with a deformation absorbing part which absorbs deformation due to thermal expansion of the end plate. The scroll fluid machine is improved in reliability while the compression efficiency is maintained by preventing the fixed scroll and the orbiting scroll from coming into contact with each other without increasing a clearance between the wrap parts of both scrolls. | 07-26-2012 |
| 20120195781 | COMPRESSOR HAVING CAPACITY MODULATION SYSTEM - A compressor includes first and second scroll members, a piston and a control valve. The first scroll member includes an end plate defining a capacity modulation passage. The first and second scroll members form a suction pocket, an intermediate compression pocket and a discharge pocket. The capacity modulation passage is in communication with the first intermediate compression pocket. The piston is supported on the first scroll member and partially defines a modulation control chamber. The control valve is in communication with the control chamber and selectively provides communication between the control chamber and one of the first and second pressure sources to displace the piston between a closed position and an open position. The piston isolates the capacity modulation passage from communication with the suction pressure region when in the closed position and provides communication between the capacity modulation passage and the suction pressure region when in the open position. | 08-02-2012 |
| 20120224990 | HELIUM ENCLOSED COMPRESSOR - Helium enclosed compressor. A compressor and a motor section with stator having coil ends and a rotor, are housed within an enclosed vessel partitioned into discharge and motor chambers by a frame. The compressor section has a stationary scroll having a spiral wrap standing upright at a disk-like panel and an orbiting scroll having a spiral wrap standing upright at a disk-like panel, made to mesh with each other while their wraps face the inside. The orbiting scroll sucks helium gas from a suction port of an outer peripheral portion of the stationary scroll, and discharges helium gas into the discharge chamber from a discharge port of a central portion of the stationary scroll. An inverter controls a number of rotations of the motor section, wherein a plurality of varnish-treated layers which becomes insulating films is formed on the surface of a coil which constitutes the coil ends. | 09-06-2012 |
| 20120230854 | Scroll Compressor - A scroll compressor with high efficiency is provided according to the present invention. The scroll compressor compresses a refrigerant by meshing of an orbiting scroll and a fixed scroll, wherein the orbiting scroll includes a back pressure hole which intermittently connects a compression chamber and a back pressure chamber per one orbit of the orbiting scroll, and the back pressure hole communicates with the compression chamber and also with the back pressure chamber and shuts off the communication with the back pressure chamber after the communication with the compression chamber is shut off. | 09-13-2012 |
| 20120230855 | SCROLL COMPRESSOR - A scroll compressor includes a fixed scroll having a fixed wrap, and an orbiting scroll having an orbiting wrap engaged with the fixed wrap to define a first compression chamber between an inner surface of the fixed wrap and an outer surface of the orbiting wrap, and to define a second compression chamber between an inner surface of the orbiting wrap and an outer surface of the fixed wrap. A rotation shaft is provided with an eccentric portion at one end thereof to drive the orbiting scroll. A protruding portion protrudes inwardly from an inner end of the fixed wrap, and contacts the orbiting wrap. A distance between a center of the eccentric portion and a tangent line at a contact point between the protruding portion and the orbiting wrap at an end of the first compression chamber is smaller than a radius of the eccentric portion. | 09-13-2012 |
| 20120258003 | SCROLL COMPRESSOR WITH SPRING TO ASSIST IN HOLDING SCROLL WRAPS IN CONTACT - An electric motor drives a shaft to cause one scroll member to orbit relative to another scroll member. The shaft has an eccentric pin extending upwardly into a slider block. The eccentric pin is further provided with a generally flat drive surface, with clearance provided between the bore of the slider block and an outer periphery of the eccentric pin such that the slider block can move relative to the eccentric pin. The slider block extends upwardly into a boss extending away from the base of one scroll member wrap. A spring is positioned to bias the one scroll wrap toward the other scroll member wrap. The spring is positioned between the eccentric pin and the bore of the slider block. | 10-11-2012 |
| 20120258004 | SCROLL COMPRESSOR - A compressor may include a shell assembly, a first scroll member located within the shell assembly and including a first end plate and a first spiral wrap extending from the first end plate, and a second scroll member located within the shell assembly, supported for orbital movement relative to the first scroll member and including a second end plate and a second spiral wrap extending from the second end plate and meshingly engaged with the first spiral wrap to form compression pockets. The first scroll member may define a fluid injection port and the second scroll member may define a passage in communication with the fluid injection port and at least one of the compression pockets to provide pressurized vapor from the fluid injection port to the at least one of the compression pockets. | 10-11-2012 |
| 20120315173 | SCROLL COMPRESSOR - A scroll compressor includes a fixed scroll, an orbiting scroll and an injection passage. Each scroll has an end plate and a spiral lap. The scrolls mesh with each other to form a compression chamber. The injection passage supplies intermediate pressure refrigerant and refrigeration oil separated from discharged refrigerant to the compression chamber. At least one of the scrolls has a bottom land facing the lap of the other of the scrolls. The bottom land has an intermediate bottom region facing a part of the compression chamber communicating with the injection passage, and a suction side bottom region located closer to an outer end of the lap than the intermediate bottom region. A clearance between the suction side bottom region and the end face of the lap is larger than a clearance between the intermediate bottom region and the end face of the lap. | 12-13-2012 |
| 20130004354 | SCROLL COMPRESSOR - A scroll compressor including a fixed scroll having a fixed wrap; and an orbiting scroll having an orbiting wrap engaged with the fixed wrap to form compression chambers, and performing an orbital motion with respect to the fixed scroll, wherein at least one of the fixed wrap and the orbiting wrap has a first constant section, a variable section, and a second constant section consecutively formed in a direction from a wrap final end to a wrap initial end. | 01-03-2013 |
| 20130071277 | SCROLL COMPRESSOR - The present disclosure relates to a scroll compressor. According to the present disclosure, in a shaft penetration scroll compressor in which an eccentric portion of the rotation shaft is overlapped with a orbiting wrap of the orbiting scroll in a radial direction, when a bearing area between the orbiting scroll and the rotation shaft is A and an end plate area of the orbiting scroll is B, A/B may be formed in a range of 0.035-0.085, and thus it may be possible to obtain a sufficient volume ratio and Sommerfeld number as well as reducing the overall size of the compressor, thereby reducing a frictional loss and abrasion in the compressor. | 03-21-2013 |
| 20130071278 | SCROLL COMPRESSOR - The present disclosure relates to a scroll compressor. According to the present disclosure, in a shaft penetration scroll compressor in which an eccentric portion of the rotation shaft is overlapped with a orbiting wrap of the orbiting scroll in a radial direction, an oil hole for supplying oil inhaled through the oil passage of the rotation shaft to a thrust bearing surface between the scroll compressor and orbiting scroll may be formed at the fixed scroll, and thus the orbiting scroll may be supported with the pressure of oil supplied to the thrust bearing surface through the oil hole to prevent tilting of the orbiting scroll due to the eccentricity of a gas force in advance, thereby enhancing the reliability and performance of the compressor. | 03-21-2013 |
| 20130071279 | Scroll-Type Fluid Machine - A scroll-type fluid machine ( | 03-21-2013 |
| 20130078128 | COMPRESSOR INCLUDING BIASING PASSAGE LOCATED RELATIVE TO BYPASS PORTING - A compressor may include a first scroll member, a second scroll member and a seal engaged with the second scroll member. The first scroll member may include a first end plate having a first spiral wrap extending therefrom. The second scroll member may be supported relative to the first scroll member and may include a second end plate having a second spiral wrap extending therefrom and meshingly engaged with said first spiral wrap. The second end plate may define a discharge port, bypass porting and a biasing passage. The biasing passage may be in communication with the bypass porting during a portion of a compression cycle of the compressor. The seal and the second scroll member may define an axial biasing chamber in communication with the biasing passage. | 03-28-2013 |
| 20130078129 | SCROLL COMPRESSOR - The present disclosure relates to a scroll compressor. According to the present disclosure, in a shaft penetration scroll compressor in which an eccentric portion of the rotation shaft is overlapped with a orbiting wrap of the orbiting scroll in a radial direction, a back pressure chamber formed at a rear surface of the orbiting scroll may be eccentrically formed from the circular center around a discharge port to correspond to the eccentric discharge port, thereby effectively preventing tilting of the orbiting scroll due to the eccentricity of a gas force generated while the discharge port is eccentrically formed. | 03-28-2013 |
| 20130089449 | SCROLL COMPRESSOR WITH BYPASS HOLE - A scroll compressor is provided. The scroll compressor may include a fixed scroll having a fixed wrap with a thickness that varies along a compression path and a disk having a discharge and at least one bypass hole formed therein, and an orbiting scroll having an orbiting wrap with a thickness that varies along the compression path and that orbits with respect to the fixed scroll to define a compression space between the respective wraps. The compressor may also include a rotation shaft coupled to the orbiting scroll, and a driver that rotates the rotation shaft. A diameter of each bypass hole may be greater than one third of an effective diameter of the discharge hole. | 04-11-2013 |
| 20130115123 | SCROLL COMPRESSOR - A scroll compressor may include a blocking portion provided in a fixed component thereof, and positioned adjacent to a discharge hole formed in an orbiting scroll of the compressor. The blocking portion may temporarily obscure the discharge hole upon initiation of a discharging operation, thereby preventing refrigerant discharged into a discharging space from flowing back into a compression chamber, without the use of a separate check valve. Such a blocking portion may prevent an increase in overall compressor noise due to noise typically generated by a check valve. Such a blocking portion may also prevent degradation in compressor reliability levels due to valve damage and increases in fabricating costs due to the addition of the valve. | 05-09-2013 |
| 20130280116 | COMPRESSOR - A compressor includes sliding members arranged to slide relative to each other when compressing a refrigerant. At least one of the sliding members has a resin layer that is formed on the whole area or a portion of at least one sliding surface. The resin layer has an arithmetic mean surface roughness (Ra) of 0.3 or more, or the whole area or a portion of an area opposed to the resin layer is entirely or partially harder than the resin layer and has an arithmetic mean surface roughness (Ra) of 0.3 or more. | 10-24-2013 |
| 20130280117 | COMPRESSOR - A compressor includes a compression mechanism and a resin layer including a stack of three or more layers formed on a whole area or a portion of at least one surface of at least one part of the compression mechanism. A hardness of a layer most distant from a base in the resin layer is smaller than a hardness of a layer closest to the base in the resin layer. A difference in hardness between two adjacent layers in the resin layer is smaller than a difference in hardness between the layer most distant from the base and the layer closest to the base. | 10-24-2013 |
| 20130294956 | SCROLL FLUID MACHINE - A scroll fluid machine includes a revolving scroll in which a revolving wrap stands upright on an end plate supported revolvably on a drive shaft, and a fixed scroll which is provided opposite the revolving scroll and in which a fixed wrap stands upright on an end plate. The revolving and fixed wraps overlap to form a compression chamber for compressing a fluid by causing the revolving scroll to revolve. The scroll fluid machine further includes a rod-shaped member attached to the end plate of the revolving scroll and extending to a rear surface side of the fixed scroll, which is a side not opposing the revolving scroll. A revolving plate is attached to the rod-shaped member, provided with a pin crank mechanism, and supported revolvably on the drive shaft. The revolving plate is provided with a sealing unit that seals the compression chamber in an axial direction. | 11-07-2013 |
| 20130302199 | SCROLL EXPANDER - In a double rotation type scroll expander having double expansion chambers, a single integrated drive shaft is disposed to penetrate the interior of a housing, the double expansion chambers are formed by a drive scroll body and a driven scroll body, and a working medium introduction hole is provided in an axial direction of the drive shaft such that the working medium is supplied evenly to the double expansion chambers through the working medium introduction hole via a radial direction hole. The drive shaft and the drive scroll body formed integrally with the drive shaft rotate while the driven scroll body rotates synchronously with the drive scroll shaft via an interlocking mechanism. | 11-14-2013 |
| 20130302200 | SCROLL TYPE FLUID MACHINE, METHOD AND DEVICE FOR FORMING ELASTIC COATING THEREON - A coating solution that contains 10 to 20% by weight of epoxy resin serving as a thermosetting resin, 20 to 30% by weight of MoS | 11-14-2013 |
| 20140010694 | SCREW COMPRESSOR - A scroll compressor includes a compression mechanism having a fixed scroll and an orbiting scroll. The fixed scroll includes a first end plate, an outer peripheral wall extending from an edge of first end plate, a first oil groove, and a first wrap inside of the outer peripheral wall. The orbiting scroll includes a second end plate in sliding contact with an end of the first wrap and an end of the outer peripheral wall, a second oil groove, and a second wrap. The first oil groove is disposed on a surface of the outer peripheral wall, extends along an inner periphery of the outer peripheral wall, and is configured to receive lubricating oil at a high pressure corresponding to a discharge pressure of the compression mechanism. The second oil groove is disposed on a surface of the second end plate, and is communicatable with the first oil groove. | 01-09-2014 |
| 20140023540 | ANTI-WEAR COATINGS FOR SCROLL COMPRESSOR WEAR SURFACES - Anti-wear surface coatings and methods for making them are provided. Such anti-wear surface coatings are particularly suitable for use in a compressor, such as a scroll compressor. A precursor powder material can be applied via spraying to a wear surface of a metal component of the scroll compressor. The precursor powder material comprises a powderized thermoplastic polymer (e.g., PEEK), a first lubricant particle (e.g., molybdenum disulfide (MoS | 01-23-2014 |
| 20140140877 | SCROLL-TYPE VOLUME DISPLACEMENT APPARATUS WITH AN ORBITING THRUST BEARING - A scroll-type volume displacement apparatus with an orbiting thrust bearing. A scroll element of the first end plate in a fixed scroll engages with a scroll element of the second end plate in an orbiting scroll, the fixed scroll and the orbiting scroll are set in the main housing respectively. The purpose of the apparatus is to set the thrust ball bearing between the orbiting scroll and the base shell, which can orbit along the orbiting scroll, so as to balance the potential shake generated in the orbiting movement along the orbiting scroll through the multi-group thrust ball bearings. And, by the sealed contact between the orbiting scroll and the thrust ball bearing, the axial deviating force of the orbiting scroll can seal the pressure chamber to keep the slight contact of the front and behind face of the two scrolls which engages with each other. | 05-22-2014 |
| 20140234148 | Scroll Compressor - A scroll compressor configures suction and compression rooms between fixed and orbiting scrolls, includes a back pressure room at the orbiting scroll base plate back face, and is configured in an asymmetric tooth shape. A fluid outflow path for an orbiting scroll lap external line side compression room and a fluid outflow path for an internal line side compression room are configured on an orbiting scroll base plate, and outlet side openings of the respective fluid outflow paths are opened to an orbiting lap tooth bottom. Inlet side openings of the respective fluid outflow paths are opened to the orbiting scroll base plate face sliding with the fixed scroll, and a fixed scroll base plate face is configured with a communicating section control groove for intermittently communicating the inlet side openings of the respective fluid outflow paths and the back pressure room in accordance with an orbiting movement. The communicating section control groove is configured such that pressures of the respective compression rooms in starting to communicate and finishing communicating the both compression rooms on the external line side and on the internal line side and the back pressure become the same. | 08-21-2014 |
| 20140255232 | PLANETARY ROTOR MACHINE MANIFOLD - Various apparatuses are provided for planetary rotor machines including a plurality of helical rotors and a corresponding manifold. In one example, the manifold includes a head plate to which each of the rotors is rotatably mounted. The head plate includes a fluid flow opening having a center coaxial with a central axis of the machine. The fluid flow opening comprises a plurality of ports that each correspond to one of the rotors. Each of the ports comprises an inwardly curving inner side extending between a starting point and an ending point, a first lateral arcuate side that forms with the inner side a first pointed notch in the head plate, and a second lateral arcuate side that forms with the inner side a second pointed notch in the head plate. The second lateral arcuate side is a mirror image of the first lateral arcuate side. The manifold substantially prevents fluid from bypassing a cavity created by the rotors of the machine. | 09-11-2014 |
| 20140255233 | COMPACTED/VERMICULAR GRAPHITE CAST IRON FOR ORBITAL OR FIXED SCROLL AND MANUFACTURING METHOD OF ORBITAL OR FIXED SCROLL USING THE SAME - Compacted/vermicular (CV) graphite cast iron for an orbital or fixed scroll and a method for manufacturing an orbiting or fixed scroll using the same are provided. The CV graphite cast iron may includes C: 3.4˜3.9%, Si: 1.7˜2.6%, Mn: 0.2˜0.8%, P: 0.02˜0.07%, S: 0.01˜0.03%, Ti: 0.02˜0.1% by weight ratio, with the remainder including iron (Fe) and other impurities. A CV ratio may be 50% or more. | 09-11-2014 |
| 20140271304 | SCROLL COMPRESSOR WITH BACK PRESSURE CHAMBER - An upper back pressure type scroll compressor is provided having a back pressure chamber. The scroll compressor may include a casing, a discharge cover, a main frame, a first scroll supported by the main frame, and a second scroll forming a suction chamber, an intermediate pressure chamber, and a discharge chamber together with the first scroll. The scroll compressor may also include a back pressure plate coupled to the second scroll. The back pressure plate may include a cavity with which the intermediate pressure chamber of the second scroll communicates. The scroll compressor may further include a floating plate movably coupled to the back pressure plate so as to seal an upper portion of the cavity. | 09-18-2014 |
| 20140308146 | SCROLL COMPRESSOR - In a stepped scroll compressor, inclined surfaces ( | 10-16-2014 |
| 20140348680 | SCROLL COMPRESSOR - A scroll compressor is provided, in which a fixed side discharge opening is formed eccentric from a geometrical center of an orbiting scroll toward an orbiting side discharge opening, so as to overlap the orbiting side discharge opening across a relatively wide area. This may reduce flow resistance between the orbiting side discharge opening and the fixed side discharge opening. Accordingly, a refrigerant compressed in a final compression chamber may be rapidly discharged without being blocked by an upper frame, while maintaining a proper discharge pressure. Since uniform pressure may be maintained in compression chambers positioned at both sides of the scroll compressor, input losses due to over-compression may be reduced. | 11-27-2014 |
| 20150037189 | SCROLL COMPRESSOR - A scroll compressor includes a fixed scroll and an orbiting scroll. Each of the fixed and orbiting scrolls includes an end plate and a spiral wrap standing on a front surface of the end plate. The scrolls are arranged such that the front surfaces of the end plates face each other and the wraps are engaged with each other. The orbiting scroll eccentrically rotates, without turning on an axis thereof, with respect to the fixed scroll to compress fluid in compression chambers respectively formed inside and outside the wrap of the orbiting scroll. Each wrap is formed in a shape such that at least one of the compression chambers serves as a rate-reduced compression chamber where a volume change rate thereof is reduced in a middle of a compression phase. | 02-05-2015 |
| 20150044082 | HORIZONTAL TYPE SCROLL COMPRESSOR - A horizontal type scroll compressor includes a main scroll through which a crankshaft is rotatably inserted, the main scroll having a fixed wrap formed on a front surface thereof, and an orbiting scroll coupled to the crankshaft inserted through the main scroll and having an orbiting wrap. A discharge port is formed toward one side surface in an axial direction of the main scroll facing a driving motor. A guide member is coupled to the one side surface of the main scroll, and has a discharge guide portion accommodating the discharge port therein for guiding a refrigerant into the inner space of the casing. This may allow the discharge port to be formed the closest to an axial center, thereby reducing a dead volume and a size of the compressor. Also, with the crankshaft inserted through the fixed wrap and the orbiting wrap, an inclination of the orbiting scroll can be prevented. | 02-12-2015 |
| 20150093274 | POWDER METAL SCROLLS WITH MODIFIED TIP DESIGNS - Scroll members for scroll compressors made from one or more near-net shaped powder metal processes, either wholly or partially fabricated together from sections. In certain variations, the involute scroll portion of the scroll member has a modified terminal end region. The terminal end region may include an as-sintered coupling feature comprising a tip component that forms a contact surface for contacting an opposing scroll member during compressor operation. The tip component can be a tip seal or a tip cap received by the as-sintered coupling feature. The tip cap may be sinter-bonded or otherwise coupled to the terminal end region. In other variations, a terminal end region may comprise a second material including a tribological material that forms a contact surface. Methods of making such scroll members for scroll compressors are also provided. | 04-02-2015 |
| 20150139844 | SCROLL COMPRESSOR WITH OIL MANAGEMENT SYSTEM - A compressor ( | 05-21-2015 |
| 20150147214 | SCROLL COMPRESSOR - A scroll compressor includes a compression mechanism including fixed and movable scrolls. The fixed and movable scrolls have end plates and spiral laps. The laps are engaged to form a compression chamber. The end plates are in pressure contact around the compression chamber to form a thrust sliding surface. The thrust sliding surface has an oil groove extending around the compression chamber. High-pressure refrigerating machine oil is supplied to the oil groove. During orbiting of the orbiting scroll, at least in a region serving as a suction space of fluid in an outer peripheral portion of the compression chamber, an outer seal length from an outer peripheral edge of the oil groove in the thrust sliding surface to an outer edge of the movable end plate is smaller than an inner seal length from an inner peripheral edge of the oil groove to a peripheral edge of the compression chamber. | 05-28-2015 |
| 20150316054 | SCROLL COMPRESSOR - The scroll compressor is provided that may include a casing including a rotational shaft; a discharge cover fixed inside of the casing to partition the inside of the casing into a suction space and a discharge space; a back pressure plate that defines a back pressure chamber that accommodates a refrigerant, a floating plate to define the back pressure chamber together with the back pressure plate, the floating plate including a contact or rib capable of contacting the discharge cover, and a coating layer that defines an outer surface of the contact. The discharge cover may have a first hardness value, the floating plate may have a second hardness value, and the coating layer may have a third hardness value. The third hardness value may be less than the first hardness value and greater than the second hardness value. | 11-05-2015 |
| 20150316055 | SCROLL COMPRESSOR - A scroll compressor is provided that may include a casing including a rotational shaft, a discharge cover fixed inside of the casing to partition the inside of the casing into a suction space and a discharge space, a first scroll that is revolved by rotation of the rotational shaft, a second scroll that defines a plurality of compression chambers together with the first scroll, the second scroll having an intermediate pressure discharge hole that communicates with a compression chamber having an intermediate pressure of the plurality of compression chambers, a back pressure plate that defines a back pressure chamber that accommodates a refrigerant discharged from the intermediate pressure discharge hole, a floating plate movably disposed on or at a side of the back pressure plate to define the back pressure chamber together with the back pressure plate, and an elastic member disposed between the floating plate and the discharge cover to provide an elastic force to the floating plate. | 11-05-2015 |
| 20150322947 | Scroll-Type Fluid Machine - To provide a scroll-type fluid machine in which the influence on power recovery efficiency of a clearance in an expansion section is reduced. A scroll-type fluid machine ( | 11-12-2015 |
| 20150330386 | CAPACITY-MODULATED SCROLL COMPRESSOR - A compressor is provided and may include a first scroll member having an end plate and a spiral wrap extending from the end plate. The end plate may include a first modulation port and a second modulation port each in fluid communication with a compression pocket formed by the spiral wrap. A first modulation valve ring may be movable relative to the end plate between a first position blocking the first modulation port and a second position spaced apart from the first modulation port. A second modulation valve ring may movable relative to the end plate between a first position blocking the second modulation port and a second position spaced apart from the second modulation port. The second modulation ring may be located radially inward from the first modulation valve ring. | 11-19-2015 |
| 20150337834 | Scroll-Type Fluid Machine - The objective of the present invention is to provide a scroll-type fluid machine for which the service life can be improved by reducing the load applied to a rotation prevention mechanism. To solve this problem, this scroll-type fluid machine is characterized by being equipped with a stationary scroll, an orbiting scroll that is provided opposing the stationary scroll and undergoes turning movement, a casing provided on the outside of the orbiting scroll, a drive shaft that drives and turns the orbiting scroll, a boss plate part that is provided separated from the orbiting scroll and is connected to the drive shaft, and multiple rotation prevention mechanisms provided between the boss plate part and the casing, and is characterized in that the boss plate part has multiple rotation-prevention-mechanism-side boss plate parts connected to the rotation prevention mechanisms, and a drive-shaft-side boss plate part connected to the drive shaft, and spaces are provided between the rotation-prevention-mechanism-side boss plate parts and the drive-shaft-side boss plate part. | 11-26-2015 |
| 20150369244 | SCROLL COMPRESSOR - Scroll compressor with a stationary, stator scroll and a movable rotor scroll and a drive to move the rotor, whereby in each position places are formed with an instantaneous minimum opening between the rotor scroll and the stator scroll whereby at each height in a minimum opening there is a local transverse internal clearance (S), whereby at least one of the stator flanks or rotor flanks comprises an adapted flank section with an initial local stator flank deviation (ΔT | 12-24-2015 |
| 20160053759 | SCROLL COMPRESSOR - A compressor is provided. The compressor may include a fixed wrap, and an orbiting scroll having an orbiting wrap engaged with the fixed wrap to form compression chambers. The fixed wrap and the orbiting wrap may have irregular wrap curves. At least one interference avoiding portion at which a spacing between the wraps is greater than an orbiting radius or at least one gap compensating portion at which the spacing between the wraps is smaller than the orbiting radius, in a state in which a center of the fixed scroll and a center of the orbiting scroll are aligned with each other, may be provided on a sidewall surface of the fixed wrap or the orbiting wrap, whereby frictional loss or abrasion due to interference between the wraps or a refrigerant leakage due to a gap between the wraps may be prevented. | 02-25-2016 |
| 20160102665 | SCROLL COMPRESSOR - A scroll compressor of the present invention includes a partition plate | 04-14-2016 |
| 20160108915 | SCROLL COMPRESSOR - In a scroll compressor, breakage of a spiral end portion of a spiral wall ( | 04-21-2016 |
| 20160201678 | SCROLL COMPRESSOR | 07-14-2016 |
| 20180023569 | SCALLOP STEP FOR A SCROLL COMPRESSOR | 01-25-2018 |
| 20220136501 | SCROLL COMPRESSOR - A scroll compressor is provided that may include a casing, a drive motor, an orbiting scroll, a non-orbiting scroll, and a floating plate provided with a cover portion to cover an area between an outer wall portion and an inner wall portion of the non-orbiting scroll so as to form a back pressure chamber with the non-orbiting scroll, and a valve accommodating portion that extends from the cover portion so as to accommodate a discharge valve configured to open and close a discharge port. Accordingly, structure for forming a back pressure chamber is simplified to thereby reduce the number of components and man-hours required for assembly. | 05-05-2022 |
