Abstract: Disclosed are a method and a device for balancing crankshaft deformation e, a crankshaft with counterweights determined according to the method, and a scroll compressor using the crankshaft. The method includes: determining a component centrifugal force required by a counterweight to overcome the crankshaft deformation caused by both an orbiting scroll centrifugal force and a gas force; and determining the counterweight according to the component centrifugal force. The counterweight is arranged on the crankshaft.

Abstract: A scroll compressor of the present disclosure includes a housing; a motor provided in the housing; a rotating shaft rotated by the motor; an orbital scroll orbital moved by the rotating shaft; and a fixed scroll forming a compression chamber together with the orbital scroll, wherein the housing includes a center housing through which the rotating shaft passes; a front housing forming a motor accommodating space in which the motor is accommodated; and a rear housing having a discharge chamber accommodating a refrigerant discharged from the compression chamber, a discharge port guiding the refrigerant of the discharge chamber to an outside of the housing, an introduction port into which an intermediate pressure refrigerant is introduced from the outside of the housing, and an introduction chamber accommodating the refrigerant introduced through the introduction port, and wherein the fixed scroll comprises an injection hole guiding the refrigerant of the introduction chamber to the compression chamber.

Abstract: Disclosed herein is a high-pressure scroll compressor, in response to a discharged refrigerant flowing into a back pressure chamber, capable of directly discharging the refrigerant to a space inside a main body, and capable of maintaining an intermediate pressure of the back pressure chamber to be less than a discharge pressure of the refrigerant by separately providing a discharge flow path in the back pressure chamber.

Abstract: A hermetic scroll compressor has a symmetric wrap structure. The scroll compressor includes fixed and movable scrolls, a crank shaft, a motor, and a casing. The casing includes an oil reservoir, and a motor space serving as a low-pressure space. The fixed and movable scrolls define first and second compression chambers. The fixed scroll has a first passage to guide gas refrigerant in the low-pressure space to the first and second compression chambers. The movable scroll has a second passage to guide gas refrigerant in the low-pressure space to the first compression chamber. The gas refrigerant that has passed through the first and second passages flows into the first compression chamber. The gas refrigerant that has passed through the first passage also flows into the second compression chamber.

Abstract: An air injection enthalpy-increasing scroll compressor is provided. The compressor has a main frame, a movable scroll plate and a stationary scroll plate. The movable scroll plate has a movable plate end plate and a movable scroll wrap arranged on a side end face of the movable plate end plate. A back pressure chamber is defined between the movable plate end plate and the main frame. The stationary scroll plate has a fixed scroll end plate and a stationary scroll wrap arranged on a side end face of the fixed scroll end plate. The stationary scroll wrap and the movable scroll wrap are engaged with each other to form a crescent-shaped compression cavity. The movable scroll plate and the stationary scroll plate are provided with medium pressure passages that, during the rotation of the movable scroll plate, communicate the compression cavity with the back pressure chamber.

Abstract: A scroll device includes a fixed scroll with a first involute and a first cooling chamber; an orbiting scroll with a second involute and a second cooling chamber, the orbiting scroll mounted to the fixed scroll via a mechanical coupling, the orbiting scroll configured to orbit relative to the fixed scroll around an orbital axis; a flexible conduit in fluid communication with the first cooling chamber and the second cooling chamber, the flexible conduit extending around the orbital axis from a first side of the scroll device to a second side of the scroll device; and an integrated aftercooler.

Abstract: A scroll device has a fixed scroll, and orbiting scroll, and at least one cooling chamber configured to receive coolant to cool the fixed scroll or the orbiting scroll. A flexible conduit that curves around an orbital axis of the orbiting scroll may transfer coolant into or out of the at least one cooling chamber. The scroll device may have a motor with a motor jacket configured to receive coolant for cooling the motor. One or more involutes of the scroll device may comprise a wall coated or plated with a solid abrasion-resistant lubricant.

Abstract: Disclosed herein is a scroll compressor including a casing, a drive motor arranged in the casing, a shaft coupled to the drive motor, a main frame arranged under the drive motor, a fixed scroll arranged under the main frame, an orbiting scroll arranged between the main frame and the fixed scroll and engaged with the fixed scroll to form a compression chamber with the shaft eccentrically coupled to the orbiting scroll, a discharge cover coupled to the fixed scroll to form a closed space, a discharge port formed in the fixed scroll to connect the compression chamber and the closed space, and a discharge hole passing through the main frame and the fixed scroll, wherein an inlet and an inner portion of the discharge hole have different cross-sectional areas. The scroll compressor can reduce the noise caused by movement of the refrigerant by improving the structure of the discharge holes.

Abstract: In the present invention, a fixed scroll (210A) comprises a lubricating oil introduction passage (40) that serves as a first passage for supplying, to the inside of a scroll compressor part (30), a lubricating oil located inside an oil separator that serves as a lubricating oil separation part. An orbiting scroll (210B) comprises a lubricating oil discharge passage (50) that serves as a second passage for discharging, to the outside of the scroll compressor part (30), the lubricating oil which has been introduced to the inside of the scroll compressor part (30).

Abstract: To be as lightweight and compact, for example for automotive technology, a scroll compressor further includes an axial guide that supports the movable compressor body to prevent movements in the direction parallel to a centre axis of the stationary compressor body and, in the event of movements, guides it in the direction transverse to the centre axis. A coupling prevents the movable compressor body from rotating freely. The axial guide supports a compressor body base, which carries the scroll vane, of the second compressor body against an axial support face, in that the axial support face abuts a sliding body such that it is slidable transversely to the centre axis. The sliding body is slidable transversely to the centre axis, on a carrier element that is arranged in the compressor housing.

Abstract: Disclosed is a compressor including a compressing assembly having a decompressing structure to control an amount of oil. The decompressing structure is oriented in parallel with a length direction of the rotation shaft or in a direction toward a discharger from which the refrigerant is discharged.

Abstract: The scroll compressor includes a fixed scroll; an orbiting scroll (8); a drive shaft (16); a support arrangement (5) on which is slidably mounted the orbiting scroll (8); a rotation preventing device configured to prevent rotation of the orbiting scroll (8) with respect to the fixed scroll, the rotation preventing device including orbital discs (28) respectively arranged in circular receiving holes (29) provided on the support arrangement (5), each orbital disc (28) being provided with an outer circumferential bearing surface (31) configured to cooperate with an inner circumferential bearing surface (32) provided on the respective circular receiving hole (29); and a lubrication system configured to lubricate the inner and outer circumferential bearing surfaces (32, 31) with oil supplied from an oil sump, the lubrication system including an oil reservoir (38) in which part of the oil supplied to the lubrication system is collected during operation of the scroll compressor, and a plurality of lubrication passag

Abstract: The present disclosure relates to a motor driven compressor apparatus capable of reducing abrasion of an orbiting scroll by implementing decompression without a separate decompression mechanism when a compressor is driven and increasing efficiency of the compressor by adjusting the pressure of a refrigerant, wherein a flow path, which is configured to pass through a center of a cross section in a longitudinal direction, and a first pin insertion hole in one direction at which the eccentric bushing is disposed and configured to communicate with the flow path and into which a swing pin is inserted, are formed in the rotary shaft, a second pin insertion hole, into which the swing pin is inserted, is formed in the eccentric bushing in the other direction at which the rotary shaft is disposed, and the refrigerant leaks between the swing pin and the first pin insertion hole.

Abstract: A scroll compressor in which refrigerant gas is sucked into a hermetic container and is then compressed in a compression chamber. The scroll compressor includes an orbiting scroll including a second end plate having a second surface. The second end plate has an annular groove having an opening that opens into the second surface facing a frame and serving as a back-pressure chamber with the opening being closed by the frame, a gas communication path through which the groove communicates with the compression chamber in which the refrigerant gas is being compressed, and a first oil supply passage having a first opening that opens into at least one of a region inside the groove and a region outside the groove in the second surface and through which the refrigerating machine oil is supplied to a gap between the second surface and the frame.

Abstract: A compressor including fixed scroll and revolving scroll configuring compression mechanism, compression chamber formed between fixed scroll and revolving scroll, intake chamber provided on an outer circumferential side of fixed scroll, discharge port provided in a central part of fixed scroll, muffler provided to cover discharge port at an upper part of fixed scroll, and heat-insulating member provided between fixed scroll and muffler space formed by muffler. After a refrigerant gas taken into intake chamber is compressed by revolving scroll revolving and compression chamber moving while changing a volume of compression chamber, the refrigerant gas is discharged from discharge port. The refrigerant gas discharged from discharge port is discharged into muffler space.

Abstract: A scroll compressor includes a shaft being rotated by a drive source, an eccentric bush including a recess part into which the shaft is inserted and an eccentric part being eccentric to the shaft, an orbiting scroll configured to perform an orbiting motion in interlock with the eccentric part, a fixed scroll tooth-engaged with the orbiting scroll, and a buffer member configured to prevent an outer periphery of the shaft and an inner periphery of the recess part from coming in contact with each other, wherein the buffer member is formed to be able to perform a relative motion with respect to the shaft and the recess part. Accordingly, the scrolls are prevented from being damaged, an impact sound is prevented from being generated, and an increase of an inertial force and an unbalance force of a rotating body is suppressed.

Abstract: A scroll compressor according to the present invention includes a casing, an orbiting member provided within the casing and performing an orbiting motion, a non-orbiting member forming a compression chamber together with the orbiting member, the compression chamber having a suction chamber, an intermediate pressure chamber and a discharge chamber, a communication passage configured to bypass a refrigerant of the compression chamber into the casing, an opening/closing valve assembly configured to open and close the communication passage, and a switching valve assembly configured to operate the opening/closing valve assembly, the switching valve assembly being provided outside the casing and connected to the opening/closing valve assembly, whereby an installation of the bypass hole can result in prevention of over-compression and an installation of a control valve for varying a capacity outside the casing can result in reduction of costs for the control valve.

Abstract: A back pressure chamber forming portion forms a back pressure chamber configured to accumulate a high pressure refrigerant discharged from a working chamber and thereby generate a refrigerant pressure, which urges a movable scroll against a stationary scroll. A balancer is placed at an inside of the back pressure chamber and is configured to be rotated by a rotatable shaft. The back pressure chamber forming portion has a discharge hole that communicates between a radially outer side of the back pressure chamber, which is located radially outward in a radial direction of an axis of the rotatable shaft, and a suction chamber to discharge a liquid phase refrigerant from the back pressure chamber into the suction chamber when the liquid phase refrigerant flows from the working chamber into the back pressure chamber.

Abstract: A scroll compressor includes a housing, a rotary shaft, a movable scroll, an eccentric shaft, an opposed wall, a looped elastic plate, a looped support portion, an annular protrusion, a back pressure chamber, and a back pressure supplying groove. The distance in the radial direction of the rotary shaft from the rotation axis of the rotary shaft to then outer end of the back pressure supplying groove in the radial direction of the rotary shaft is shorter than or equal to the distance obtained by subtracting the distance in the radial direction of the rotary shaft between the rotation axis of the rotary shaft and the axis of the eccentric shaft from the distance in the radial direction of the rotary shaft from the axis of the eccentric shaft to the part of the protrusion that contacts the elastic plate.

Abstract: Disclosed is a scroll compressor including stationary and movable scroll members engaged with each other. The stationary scroll member defines first and second air inlets and first and second air outlets. A first compression path is formed between the first air inlet outlet, and a second compression path is formed between the second air inlet outlet. The scroll compressor further includes a bypass passage for selectively communicating at least one of the first and second compression paths with a suction pressure area of the compressor. First and second back pressure cavities are formed on a side of the stationary scroll member facing away from the movable scroll member. The first back pressure cavity is in communication with the first compression path by means of a first back pressure passage. The second back pressure cavity is in communication with the second compression path by means of a second back pressure passage.

Abstract: A scroll compressor includes a frame holding an orbiting scroll configured to slide, a fixed scroll configured to form a compression chamber together with the orbiting scroll, and a shell accommodating the frame and the fixed scroll. The shell includes a first inner wall surface and a first protrusion protruding from the first inner wall surface to position the fixed scroll, and the fixed scroll is fixed to the first inner wall surface.

Abstract: A scroll compressor that includes a rotating shaft, an eccentric bush having a recess, into which one end of the shaft is inserted, and an eccentric portion eccentric to the shaft, an orbiting scroll operatively connected to the eccentric portion for orbiting, a fixed scroll engaged with the orbiting scroll, and a buffer member interposed between the one end of the shaft and the recess. Therefore, it is possible to prevent damage to the scrolls due to liquid refrigerant compression during initial operation and to prevent an impact sound between the shaft and the eccentric bush due to the rotational clearance therebetween.

Abstract: A scroll compressor includes a drive bush disposed in one end portion in an axial direction of a main shaft, and configured to be eccentrically rotated in accordance with rotation of the main shaft, a pair of angular bearings arranged back-to-back, and respectively clearance-fitted to an outside of the drive bush, a compression unit that has a boss portion which protrudes from an end plate of a movable scroll and in which the angular bearings are interference-fitted to an inner peripheral surface of the boss portion, and a preload application unit configured to apply a preload to the angular bearings in a direction in which the angular bearings are configured to move toward each other.

Abstract: It is assumed that a distance between a center portion of fixed scroll end plate and an outer peripheral portion at a distal end of fixed spiral wrap of fixed scroll is Ds, and that a distance between a center portion of orbiting scroll end plate and a portion included in a bottom face of an orbiting spiral wrap of orbiting scroll and facing the outer peripheral portion at the distal end of the fixed spiral wrap of the fixed scroll is Do. Further, assuming that an orbiting radius of orbiting scroll is ?, the orbiting radius being a distance between a center of eccentric shaft and a center of driving shaft, a relationship Ds+??Do is satisfied.

Abstract: The embodiments of the present disclosure disclose a scroll type micro-compressor, and a method for machining a fixed scroll plate and an orbit scroll plate thereof. The scroll type micro-compressor comprises a fixed scroll plate and an orbit scroll plate each integrally made with a monocrystalline silicon substrate; the compressor device has an Oldham ring structure, and reduces a mass of the orbit scroll plate by optimizing a design of a substrate of the orbit scroll plate; a cross-sectional shape of a plurality of micropores provided on a lower surface of the fixed scroll plate is set as of a fan ring, in which an electrode material is accommodated to maintain an electric field uniformity and reduce an electric field loss; and hydrophilia of inner surfaces is changed to prevent a top leakage and facilitate capillary filling of a compression chamber.

Abstract: A first injection port is open to a suction chamber of a plurality of chambers at some rotation phases, and is located within an angular range defined by a line connecting a winding-end contact point of an orbiting scroll at a compression start phase with a base circle center of a fixed scroll and one of two lines tangent to a winding-end point locus of a tip seal at a tooth tip of a spiral body of the orbiting scroll and passing through a base circle center of the orbiting scroll, the one line of the two tangent lines being closer to the winding-end contact point. The first injection port does not interfere with the tip seal at the tooth tip of the spiral body of the orbiting scroll.

Abstract: The purpose of the present invention is to provide a scroll fluid machine configured so that, during maintenance, grease can be easily supplied to a bearing regardless of an installation environment, thereby improving work efficiency. The present invention provides a scroll fluid machine characterized by comprising: a stationary scroll obtained by forming a wrap section on an end plate; an orbiting scroll obtained by forming a wrap section on an end plate such that the wrap section faces the wrap section of the stationary scroll; a drive shaft for driving the orbiting scroll; an orbiting bearing for supporting the drive shaft relative to the orbiting scroll; and a plurality of pouring openings for pouring a lubricant into the orbiting bearing from the outside.

Abstract: A compressor includes a first throttle portion that receives a refrigerant at an intermediate pressure from an injection pipe of a refrigerant circuit, an enlarged flow path portion that receives the refrigerant from the first throttle portion, a second throttle portion that receives the refrigerant from the enlarged flow path portion, and a compression element. The compression element includes a compression chamber that receives the refrigerant from the second throttle portion. The first throttle portion has a flow path cross-sectional area that is narrower than both a flow path cross-sectional area of the injection pipe and a flow path cross-sectional area of the enlarged flow path portion. The second throttle portion has a flow path cross-sectional area that is narrower than the flow path cross-sectional area of the enlarged flow path portion.

Abstract: 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.

Abstract: A scroll vacuum pump includes an orbiting scroll having a wall extending axially from an orbiting scroll base towards a fixed scroll, the fixed scroll having a fixed scroll wall extending axially from a fixed scroll base towards the orbiting scroll; an axially extending drive shaft having an eccentric shaft portion so that rotation of the eccentric shaft portion imparts an orbiting motion to the orbiting scroll relative to the fixed scroll; and an axial thrust bearing arrangement including an array of ball bearings for bearing against the orbiting scroll base in an axial direction, each ball bearing describing a circular path over the orbiting scroll base during orbiting motion; at least one thrust surface for bearing against the array of ball bearings; and an adjustment mechanism for adjusting the axial position of said at least one thrust surface and thereby the axial position of the orbiting scroll base.

Abstract: A scroll compressor according to the present disclosure includes a partition wall that divides a sealed vessel into a high-pressure space and a low-pressure space, a non-orbiting scroll provided in the low-pressure space, an orbiting scroll that forms a compression chamber between the orbiting scroll and the non-orbiting scroll, and a rotational shaft. The scroll compressor further includes a main bearing that supports the orbiting scroll, an elastic body that biases one of the non-orbiting scroll and the orbiting scroll so as to separate the non-orbiting scroll and the orbiting scroll from each other, and a plurality of columnar members that are fixed at one ends of the columnar members and are movable at the other ends of the columnar members, and are disposed in a circumferential direction. The non-orbiting scroll or the orbiting scroll that is biased by the elastic body is movable between the partition wall and the main bearing in an axial direction of the rotational shaft.

Abstract: A mutual rotating scroll compressor includes: a first frame fixed to a casing; a second frame provided with an interval between the first frame and the second frame, a compression space being provided between the first frame and the second frame; a first scroll rotatably supported by the first frame and coupled to a driving motor to rotate in the compression space; a second scroll engaged with the first scroll to rotate about the second frame, the second scroll and the first scroll forming a compression chamber in the compression space; and a bearing housing including a housing part, including a boss accommodation part to which the second scroll is rotatably coupled, and a hinge lug which extends from the housing part and is movably coupled to the second frame.

Abstract: A scroll compressor, and more particularly, to a scroll compressor including a communication groove which may decrease discharge resistance is provided. The scroll compressor may include a fixed scroll having a fixed end plate and a fixed wrap, and an orbiting scroll configured to perform an orbiting movement about the fixed scroll and having an orbiting end plate and an orbiting wrap. A communication groove in the form of a recessed groove may be formed in an inner surface of the orbiting end plate, and a refrigerant may flow through the communication groove according to a state in which the fixed wrap overlaps the communication groove such that there is an effect in that an opening efficiency of a discharge hole is improved at an initial stage of discharge.

Abstract: A compressor is provided and may include a shell, a hub, an insert, and at least one collar. The hub may be disposed within the shell and define an axis of rotation. The hub may include an axially extending aperture. The insert may be disposed within the aperture. The at least one collar may be disposed about the hub.

Abstract: To be as lightweight and compact, for example for automotive technology, a scroll compressor further includes an axial guide that supports the movable compressor body to prevent movements in the direction parallel to a centre axis of the stationary compressor body and, in the event of movements, guides it in the direction transverse to the centre axis. A coupling prevents the movable compressor body from rotating freely. The axial guide supports a compressor body base, which carries the scroll vane, of the second compressor body against an axial support face, in that the axial support face abuts a sliding body such that it is slidable transversely to the centre axis. The sliding body is slidable transversely to the centre axis, on a carrier element that is arranged in the compressor housing.

Abstract: A compressor includes a housing, a partition, a first scroll, a second scroll, and a valve assembly disposed within the second scroll. The valve assembly includes a valve housing, a valve body, and a first biasing member configured to displace the valve body from a first position to a second position relative to the valve housing. When in the first position, the valve body inhibits fluid communication between a fluid source and one of a series of compression pockets formed by the first and second scroll. When in the second position, the valve body allows fluid communication between the conduit and one or more of the series of compression pockets. The valve body is displaceable between the first and second positions in response to a change in operating temperature of the compressor.

Abstract: A scroll compressor according to the present invention includes a partition plate that partitions a sealed container into a high-pressure space and a low-pressure space, a fixed scroll adjacent to the partition plate, a orbiting scroll, a rotation restrictor, and a main bearing. The sealed scroll compressor further includes a pillar member having a lower end portion secured in a bearing-side engagement portion provided in the main bearing, and an upper end portion inserted in a scroll-side engagement portion provided in the fixed scroll. The axial distance from the upper end portion of the pillar member to the partition plate is smaller than the length by which the pillar member and the bearing-side engagement portion are coupled together.

Abstract: A scroll-type compressor includes a compression-chamber-forming member, a housing, an injection passage part, and a relief mechanism. The compression-chamber-forming member forms a compression chamber and has a movable scroll and a fixed scroll. The housing forms a back pressure chamber. Refrigerant to apply back pressure to the compression-chamber-forming member is accumulated in the back pressure chamber. The injection passage part is linked to the compression chamber. The relief mechanism is configured to establish a communication between the compression chamber and the back pressure chamber communicating when injection pressure of the refrigerant flowing from the injection passage part into the compression chamber is higher than the pressure in the back pressure chamber.

Abstract: An eccentric bush assembly structure of a scroll compressor, in which an orbiting scroll is eccentrically coupled to a rotary shaft of a drive motor, including a bush body rotatably coupled to the orbiting scroll while being pinned to the rotary shaft of the drive motor by an eccentric shaft, the bush body having a friction prevention groove formed in a surface facing a tip surface of the rotary shaft so as not to come into frictional contact with the tip surface.

Abstract: An elastic body is provided which biases one of a fixed scroll and an orbiting scroll in a direction in which the fixed scroll and the orbiting scroll are spaced away from each other. With this, upon the start-up of a compressor, a gap is formed between the fixed scroll and the orbiting scroll, and thus the startability is improved.

Abstract: A closed compressor is provided with a flexible oil fence, of which a fixed portion as one end is fixed onto an upper surface of a cylinder between a shaft and a cylinder head and a free end as the other end extends toward an upper inner surface of a closed container. According to this configuration, a collision sound can be prevented from being generated even when the oil fence collides with the upper inner surface of the closed container and hot oil can be prevented from flowing along a surface of suction muffler.

Abstract: A compressor may include a non-orbiting scroll, an orbiting scroll, a drive shaft, a bearing housing and an annular seal. The non-orbiting scroll includes a first spiral wrap. The orbiting scroll includes an end plate having a second spiral wrap ending from a first side of the end plate and an annular hub extending from a second side of the end plate. The first and second spiral wraps cooperate to compress working fluid from a suction pressure to a discharge pressure. The drive shaft includes a crankpin received in the hub and drives the orbiting scroll. The bearing housing rotatably supports the drive shaft and may define a biasing chamber containing working fluid biasing the orbiting scroll toward the non-orbiting scroll in an axial direction. The annular seal may engage a diametrical surface of the hub and engage the bearing housing, thereby defining the biasing chamber.

Abstract: A scroll compressor includes a housing and scroll compressor bodies disposed in the housing. The scroll bodies include first and second scroll bodies. The first and second scroll bodies have respective bases and respective scroll ribs that project from the respective bases. The scroll ribs mutually engage, such that the second scroll body is movable relative to the first scroll body for compressing fluid. An oil return tube delivers oil from an upper region of the housing to an oil sump in a lower region of the housing. The relatively longer portion is positioned substantially vertically within the housing. The relatively longer tubular portion is non-circular and may have at least one stepped portion which corresponds to a step in the interior surface of the housing. In some embodiments, the oil return tube has a short tubular portion attached at one end to a relatively longer tubular portion.

Abstract: A scroll compressor includes a compression mechanism having fixed and movable scrolls defining a compression chamber, an introduction mechanism, and an auxiliary introduction mechanism. The introduction mechanism supplies fluid from the compression chamber to a back-pressure chamber supply throughout a first period. The auxiliary introduction mechanism has an auxiliary introduction passage and a check valve. The auxiliary introduction mechanism supplies fluid from the compression chamber to a back-pressure chamber supply throughout a second period. The second period includes a time point prior to the first period.

Abstract: 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.

Abstract: Disclosed herein is an a compressor including a main body, a fixed scroll fixed on the inside of the main body, an orbiting scroll arranged to orbit relative to the fixed scroll, a compressing chamber formed by the fixed scroll and the orbiting scroll, an oil supply hole arranged to supply oil to a contact portion formed by the fixed scroll and the orbiting scroll, and an oil groove formed on an inner side of the contact portion to be closed to an outer side of the contact portion. The oil groove is extended into the form of an arc by being rotated by about 270 degrees or more along the circumference of the fixed scroll to cover the compressing chamber from the outside of the compressing chamber to supply oil all across the area of the contact portion easier which leads to more reliable operation of the compressor.

Abstract: A scroll compressor includes one or more stage of compression disposed within a compressor housing. One or more of the stages includes a stationary scroll member including a base and a generally spiral wrap extending from the base of the stationary scroll member. One or more of the stages further includes an orbiting, scroll member including a substantially circular base and a substantially spiral wrap extending from the base of the orbiting scroll member. A coupling is disposed between the first scroll member base and the second scroll member base and in surrounding relationship to the first and second scroll member spiral wraps. At least one stabilizing pad is disposed between the first scroll member base and the second scroll member base and in axial thrust force relationship with the coupling to at least partially prevent tipping of the second scroll member.

Abstract: Provided is a scroll compressor capable of ensuring reliability of a release valve device. The scroll compressor is provided with: an orbiting scroll having an orbiting scroll wrap; a fixed roll having a fixed scroll wrap intermeshing with the orbiting scroll wrap; a release hole formed in the fixed scroll; a housing hole communicating with the release hole and having larger diameter than that of the release hole; a valve seat member which is housed in the housing hole and has a valve seat surface; a valve plate contacting with or separating from the valve seat surface by a pressure difference; a spring for pressing the valve plate against the valve seat surface; a stopper which is equipped with the spring and secures the valve seat member; and a retainer for securing the stopper.

Abstract: A scroll compressor includes a housing, and scroll compressor bodies disposed in the housing. The scroll bodies include a first and second scroll bodies. The first and second scroll bodies have respective bases and respective scroll ribs that project from the respective bases, wherein the scroll ribs mutually engage. The second scroll body is movable relative to the first scroll body for compressing fluid. A drive unit rotates a drive shaft to drive the second scroll body in an orbital path. The drive shaft has an eccentric drive configured to engage a corresponding drive hub on the second scroll body. The eccentric drive has a drive surface acting on the corresponding drive hub in a first plane. The drive shaft has a locating feature for a counterweight. The locating feature is aligned in either the first plane or a second plane parallel to the first plane.

Abstract: A bush bearing and a scroll compressor including a bush bearing are provided. A boss of an orbiting scroll may be inserted into and coupled to a boss coupling groove of a rotational shaft, and thus, an outer circumferential surface of a bush bearing may wholly contact an inner circumferential surface of the boss coupling groove, thereby decreasing wear of the bush bearing. Further, friction loss in the bush bearing may be reduced, and thus, compression efficiency and reliability may be enhanced, noise may be reduced, and material costs may be reduced. Furthermore, despite that the bush bearing is formed in a ring shape and press-fitted to the boss, as the bush bearing may be formed of a plastic material having an ether ketone bonding in consideration of a thermal expansion rate, an elongation, and a press-fit range, the bush bearing may be effectively prevented from being detached from the boss, thereby enhancing a reliability of a compressor.