Screw compressor

A screw compressor comprises a first meshing body and a second meshing body. The first meshing body has plural helical flutes disposed around a first rotating shaft. The second meshing body has plural projections or lobes disposed around a second rotating shaft. At least one of the projections or lobes is arranged non-uniformly with respect to the other projections or lobes in a circumferential direction of the second rotating shaft. The plural helical flutes are arranged to be meshable with the plural projections or lobes, in a circumferential direction of the first rotating shaft.

AIR COMPRESSION DEVICE

An air compression device is provided with a rotary compressor, a discharge flow channel connected to a discharge portion of the compressor, a release flow channel disposed to be connectable to the discharge flow channel, and an operation control unit configured to perform a release operation of releasing a part or all of compressed air remaining in the discharge flow channel through the release flow channel when the operation control unit controls to stop the compressor. 1. An air compression device , comprising:a rotary compressor;a discharge flow channel connected to a discharge portion of the compressor;a release flow channel disposed to be connectable to the discharge flow channel; andan operation control unit configured to perform a release operation of releasing a part or all of compressed air remaining in the discharge flow channel through the release flow channel when the operation control unit controls to stop the compressor.2. The air compression device according to claim 1 , whereinwhen the release operation is performed, the operation control unit controls to start releasing the compressed air while driving the compressor, and controls to stop the compressor after a predetermined time elapses.3. The air compression device according to claim 1 , whereinwhen the release operation is performed, the operation control unit controls to start releasing the compressed air while driving the compressor, and controls to stop the compressor when a condition for finishing the release operation is satisfied.4. The air compression device according to claim 1 , further comprising:an opening/closing mechanism which connects or disconnects the discharge flow channel to or from the release flow channel, whereinthe operation control unit is configured to bring the opening/closing mechanism to a disconnected state when an ordinary operation of generating compressed air is performed, and to bring the opening/closing mechanism to a connected state before the compressor is ...

SCROLL COMPRESSOR

Disclosed herein is a scroll compressor in which refrigerant is compressed in a compression chamber while the volume of the compression chamber is gradually decreased due to relative rotation of a fixed scroll and an orbiting scroll. In accordance with the disclosure, the scroll compressor is provided in which a pressure in a back-pressure chamber is managed in connection with a discharge refrigerant pressure so that the orbiting scroll is supported by the pressure in the back-pressure chamber without a power loss or an inner leak in an overall pressure section of a scroll. 1. A scroll compressor comprising:a housing including a suction port and a discharge port formed in an outer peripheral surface of the housing, the housing defining a suction chamber and a discharge chamber, the suction chamber communicating with the suction port and the discharge chamber communicating with the discharge port;a fixed scroll disposed in a first portion of the housing and having an outlet formed therein communicating with the discharge chamber;a drive motor mounted to a second portion of the housing including a rotary shaft coupled thereto;an orbiting scroll eccentrically coupled to an end of the rotary shaft and configured to revolve about the fixed scroll, the orbiting scroll cooperating with the fixed scroll to define a plurality of compression chambers;a back-pressure chamber defined by the housing between the orbiting scroll and the rotary shaft, the back-pressure chamber configured to urge the orbiting scroll towards the fixed scroll;a back-pressure regulation passage comprising a first passage through which the discharge chamber communicates with the back-pressure chamber and a second passage through which the back-pressure chamber communicates with the suction chamber; anda pressure regulation unit in communication with the back-pressure regulation passage configured to regulate a pressure in the back-pressure chamber in response to a pressure in the discharge chamber.2. ...

Scroll compressor

A scroll compressor is provided in which a center of a back pressure chamber is eccentrically disposed relative to a center of a fixed scroll. For example, the center of the back pressure chamber may be moved towards a center of an orbiting scroll at a time of discharge, thereby preventing displacement of the fixed scroll and ensuring stability in orbital movement of the orbiting scroll.

SYSTEMS AND METHODS FOR ENHANCED COMPRESSOR BEARING LIFE

The present disclosure relates to a bearing load control system that includes a force application device configured to apply a force to a bearing of a compressor and a sensor configured to provide feedback indicative of an operating parameter of the compressor. The bearing load control system also includes a controller that is communicatively coupled to the sensor and configured to determine an indication of a thrust force applied to the bearing based on the feedback indicative of the operating parameter. The controller is also configured to adjust the force application device to control the force applied to the bearing based at least in part on a control algorithm and the indication of the thrust force. 1. A bearing load control system , comprising:a force application device configured to apply a force to a bearing of a compressor;a sensor configured to provide feedback indicative of an operating parameter of the compressor; anda controller, wherein the controller is communicatively coupled to the sensor and configured to determine an indication of a thrust force applied to the bearing based on the feedback indicative of the operating parameter, wherein the controller is configured to adjust the force application device to control the force applied to the bearing based at least in part on a control algorithm and the indication of the thrust force.2. The bearing load control system of claim 1 , wherein the controller is configured to adjust the force application device to control the force claim 1 , such that a resultant force applied to the bearing is within a threshold range of a target bearing load.3. The bearing load control system of claim 1 , wherein the force and the thrust force are applied in a same direction with respect to a central axis of the compressor or applied in substantially opposite directions with respect to the central axis of the compressor.4. The bearing load control system of claim 1 , wherein the sensor is configured to provide additional ...

Screw compressor

A screw compressor includes a housing having an inlet for receiving gas to be compressed by the compressor and an outlet for discharging pressurized compressed gas. A pair of meshing threaded rotors, each rotor having an axis and being rotatably received in the housing, each rotor having a first end near the inlet and a second end near the outlet. A bearing rotatably carrying each rotor about its axis and positioned near the first end and the second end of each rotor. A conduit formed in the housing in selectable fluid communication with at least one bearing and a force generating source from a pressurized fluid source, the force generating source selectably providing a force in a radial direction relative to the axis of the at least one bearing.

SCREW COMPRESSOR

A screw compressor includes a housing having an inlet for receiving gas to be compressed by the compressor and an outlet for discharging pressurized compressed gas. A pair of meshing threaded rotors, each rotor having an axis and being rotatably received in the housing, each rotor having a first end near the inlet and a second end near the outlet. A bearing rotatably carrying each rotor about its axis and positioned near the first end and the second end of each rotor. A conduit formed in the housing in selectable fluid communication with at least one bearing and a force generating source from a pressurized fluid source, the force generating source selectably providing a force in a radial direction relative to the axis of the at least one bearing. 2. The system of claim 1 , wherein the force generator comprises an actuator driven by an electric motor.3. The system of claim 1 , wherein the force generator utilizes a pressurized fluid to exert the first force.4. The system of claim 1 , comprising:a second shaft rotatable with respect to the housing, disposed within the housing, and having a second rotor axis extending axially within the second shaft;a third bearing disposed circumferentially about the second shaft at a third axial position along the second rotor axis; anda fourth bearing disposed circumferentially about the second shaft at a fourth axial position along the second rotor axis, wherein the fourth axial position is adjacent to the third axial position, and wherein the force generator, or an additional force generator, is configured to selectively exert a second force in the radial direction on a third outer surface of the third bearing, a fourth outer surface of the fourth bearing, or both based on a desired share, between the third and fourth bearings, of the operating load of the system.5. The system of claim 1 , wherein the system comprises a compressor having the housing claim 1 , the shaft claim 1 , and the first and second bearings.6. The system of ...

ROTARY COMPRESSOR

A rotary compressor includes a sealed longitudinal compressor housing which is provided with a discharge portion of a refrigerant at an upper portion thereof, is provided with an inlet portion of a refrigerant at a lower portion thereof, and in which lubricant oil is stored; a compressing unit which is disposed in the compressor housing, compresses a refrigerant sucked from the inlet portion and discharges the refrigerant from the discharge portion; a motor which is disposed in the compressor housing and drives the compressing unit via a rotation shaft; and an accumulator which is attached to a side portion of the compressor housing and is connected to the inlet portion of the refrigerant. When an inner diameter of a cylinder constituting the compressing unit is referred to as Dc, a height of the cylinder is referred to as Hc, and an eccentric amount of an eccentric portion of the rotation shaft is referred to as e, Dc, Hc, and e are set so that a value obtained by an expression (e+Hc)·(Dc−e)/(e·Hc)is less than 4.1. 1. A rotary compressor , comprising:a sealed longitudinal compressor housing which is provided with a discharge portion of a refrigerant at an upper portion thereof, is provided with an inlet portion of a refrigerant at a lower portion thereof, and in which lubricant oil is stored;a compressing unit which is disposed in the compressor housing, compresses a refrigerant sucked from the inlet portion and discharges the refrigerant from the discharge portion;a motor which is disposed in the compressor housing and drives the compressing unit via a rotation shaft; andan accumulator which is attached to a side portion of the compressor housing and is connected to the inlet portion of the refrigerant,{'sup': 1/3', '2/3, 'wherein when an inner diameter of a cylinder constituting the compressing unit is referred to as Dc, a height of the cylinder is referred to as Hc, and an eccentric amount of an eccentric portion of the rotation shaft is referred to as e, Dc, Hc ...

Counterweight for compressor, motor for compressor and compressor

The present invention provides a counterweight for a compressor, an electric motor, with the counterweight, for a compressor, and a compressor with the electric motor or the counterweight. The counterweight comprises: a first component having an annular shape; a first groove formed in a surface of the first component and having a sidewall and a bottom wall; and a second component disposed in the first groove. With the technical solution according to the present invention, for example, counterbalance requirements are met, while fluid can be prevented from being stirred to cause power loss.

SCROLL COMPRESSOR AND AIR CONDITIONING APPARATUS INCLUDING THE SAME

A scroll compressor includes a fixed scroll and a movable scroll. The fixed scroll has a spiral fixed-side wrap positioned upright on a surface of a fixed-side plate. The movable scroll is orbitably disposed to face the fixed scroll. The movable scroll has a spiral movable-side wrap positioned upright on a surface of a movable-side plate, with the movable-side wrap being configured to mesh with the fixed-side wrap. A side clearance is formed between a side surface of the fixed-side wrap and a side surface of the movable-side wrap so as to increase from an outer peripheral side toward an inner peripheral side of each of the wraps. 1. A scroll compressor , comprising:a fixed scroll having a spiral fixed-side wrap positioned upright on a surface of a fixed-side plate; anda movable scroll orbitably disposed to face the fixed scroll, the movable scroll having a spiral movable-side wrap positioned upright on a surface of a movable-side plate, the movable-side wrap being configured to mesh with the fixed-side wrap,a side clearance being formed between a side surface of the fixed-side wrap and a side surface of the movable-side wrap so as to increase from an outer peripheral side toward an inner peripheral side of each of the wraps.2. The scroll compressor according to claim 1 , whereinthe increase in the side clearance is set such that the side clearance approaches a uniform state from the outer peripheral side to the inner peripheral side during an orbiting operation of the movable scroll.3. The scroll compressor according to claim 1 , whereinthe increase in the side clearance is set such that an increase rate of the side clearance becomes larger from the outer peripheral side toward the inner peripheral side.4. The scroll compressor according to claim 1 , whereinthe increase in the side clearance is obtained by decreasing a tooth thickness of at least one of the fixed-side wrap and the movable-side wrap from the outer peripheral side toward the inner peripheral side.5. ...

STRUCTURE FOR STABILIZING AN ORBITING SCROLL IN A SCROLL COMPRESSOR

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. 1. A scroll compressor , comprising:a compressor housing; a first, stationary, scroll member comprising a base and a generally spiral wrap extending from the base of the first, stationary, scroll member; and', 'a second, orbiting, scroll member comprising a substantially circular base and a generally spiral wrap extending from the base of the second, orbiting scroll member;, 'an output stage of compression disposed within the compressor housing, the output stage comprisinga coupling 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;the scroll compressor further comprising at least one of:one or more stabilizing pads disposed on the base of the first scroll member and configured to at least partially stabilize an axial thrust force between the coupling and the base of the first scroll member to at least partially prevent tipping of the second scroll member;one or more stabilizing pads disposed on the base of the second scroll member and configured to at least partially stabilize an axial thrust ...

Scroll Fluid Machine

A scroll fluid machine is provided that includes: a fixed scroll; an orbiting scroll opposed to the fixed scroll, the orbiting scroll orbiting with a plurality of compression chambers formed between the orbiting scroll and the fixed scroll; a drive shaft driving the orbiting scroll; and a backside plate provided between the drive shaft and the orbiting scroll, an alignment hole being provided in each of the orbiting scroll and the backside plate, and an alignment pin for alignment and a seal member for sealing the compression chambers being provided in the alignment holes. 1. A scroll fluid machine comprising:a fixed scroll;an orbiting scroll opposed to the fixed scroll, the orbiting scroll orbiting with a plurality of compression chambers formed between the orbiting scroll and the fixed scroll;a drive shaft driving the orbiting scroll; anda backside plate provided between the drive shaft and the orbiting scroll,wherein an alignment hole is provided in each of the orbiting scroll and the backside plate, and an alignment pin for alignment and a seal member for sealing the compression chambers are provided in the alignment holes.2. The scroll fluid machine according to claim 1 , whereinthe alignment holes are provided on an inner side than the drive shaft is.3. The scroll fluid machine according to claim 1 , whereinthe alignment pin has no screw groove or protrusion thereon.4. The scroll fluid machine according to claim 1 , whereinthe seal member includes a screw groove or a protrusion thereon.5. The scroll fluid machine according to claim 1 , whereinthe seal member has a larger diameter than the alignment pin.6. The scroll fluid machine according to claim 1 , whereina sealant is filled between the seal member and the alignment holes.7. The scroll fluid machine according to claim 1 , whereinthe seal member has a tapered end.8. The scroll fluid machine according to claim 1 , whereinthe alignment pin and the seal member are formed integrally.9. The scroll fluid machine ...

Rotary screw compressors utilizing viscous damping for vibration reduction

A screw compressor utilizing radial and axial or thrust bearings to maintain the position of the rotors radially and axially and utilizing a damping fluid to dampen rotor vibrations. The damping fluid may conveniently be provided in the form of lubricant that is already used in the compressor to seal the clearances between the rotors and between the rotors and the cylinder during compression. The damping fluid is included in a squeeze film damper, arranged in a parallel arrangement with the radial or thrust bearings, which provides viscous damping to the rotor. The introduction of additional viscous damping such as may be provided by squeeze film dampers may result in significant reduction of compressor vibration regardless of the source of vibration.

PUMPING METHOD IN A SYSTEM FOR PUMPING AND SYSTEM OF VACUUM PUMPS

The present invention relates to a pumping method in a pumping system (SP, SPP) comprising: a primary lubricated rotary vane vacuum pump () with a gas inlet port () connected to a vacuum chamber () and a gas outlet port () leading into a conduit () before coming out into the gas outlet () of the pumping system (SP, SPP), a non-return valve () positioned in the conduit () between the gas outlet port () and the gas outlet (), and an ejector () connected in parallel to the non-return valve (). According to this method, the primary lubricated rotary vane vacuum pump () is set into action in order to pump the gases contained in the vacuum chamber () through the gas outlet port (). Simultaneously the ejector () is fed with working fluid, and the ejector () continues to be fed with working fluid all the while that the primary lubricated rotary vane vacuum pump () pumps the gases contained in the vacuum chamber () and/or all the while that the primary lubricated rotary vane vacuum pump () maintains a defined pressure in the vacuum chamber (). The present invention also relates to a pumping system (SP, SPP) able to be used to implement this method. 1. Pumping method in a pumping system (SP , SPP) comprising:{'b': 3', '2', '1', '4', '5', '8, 'a primary lubricated rotary vane vacuum pump () with a gas inlet port () connected to a vacuum chamber () and a gas outlet port () leading into a conduit () before coming out into the gas outlet () of the pumping system (SP, SPP),'}{'b': 6', '5', '4', '8, 'a non-return valve () positioned in the conduit () between the gas outlet port () and the gas outlet (), and'}{'b': 7', '6, 'an ejector () connected in parallel to the non-return valve (),'}the method being characterized in that{'b': 3', '1', '4, 'the primary lubricated rotary vane vacuum pump () is set into action in order to pump the gases contained in the vacuum chamber () through the gas outlet port ();'}{'b': '7', 'simultaneously the ejector () is fed with working fluid; and'}{'b ...

SEALED COMPRESSOR AND VAPOR COMPRESSION REFRIGERATION CYCLE APPARATUS INCLUDING THE SEALED COMPRESSOR

A sealed compressor includes a centrifugal impeller above a rotor to synchronously rotate. A refrigerant rises through a rotor air hole, flows in an upper space, and flows out from a discharge pipe. The centrifugal impeller includes an oil separation plate on the rotor, and plural vanes standing on the oil separation plate, and forms inter-vane flow passages between adjacent vanes, and a vane inner flow passage that guides refrigerant from the rotor air hole to inner entrances of the inter-vane flow passages. Outer exits of the inter-vane flow passages are disposed along an entire circumference, and refrigerant increased in pressure while passing through the inter-vane flow passages flows out from the outer exits to the upper space. The oil separation plate closes a short-circuit passage through which the refrigerant directly flows from the vane inner flow passages to the discharge pipe without passing through the inter-vane flow passages. 1. A sealed compressor comprising:a sealed container that stores lubricant oil at a bottom thereof;a motor that is provided within the sealed container and has a stator and a rotor;a drive shaft attached to the rotor;a compression mechanism that is provided within the sealed container and configured to compress a refrigerant upon rotation of the drive shaft;a centrifugal impeller that is provided above the rotor and configured to rotate in synchronization with the rotor;a rotor air hole that penetrates the rotor in an up-down direction; anda discharge pipe configured to cause the refrigerant, upon flowing into a lower space of the motor, rising through the rotor air hole, and flowing into an upper space of the motor, to flow out from the upper space to an external circuit of the sealed container,wherein the centrifugal impeller includesan oil separation plate and a lower surface partition plate that are provided on an upper side of an upper end of the rotor so as to be spaced apart from each other,a plurality of vanes that stand ...

Vane pump

A vane pump including a housing having a peripheral wall portion, a bottom wall portion, and a pump chamber; a rotor disposed in the pump chamber to be rotatable; a vane disposed to be slidable in the radial direction with respect to the rotor and partitioning the pump chamber into working chambers; and a reed valve that opens and closes a discharge hole of the bottom wall portion. A pressure relief groove is disposed in a portion of the bottom wall portion corresponding to the discharge section with a clearance secured between the peripheral wall portion and the pressure relief groove. When the vane overlaps the pressure relief groove, a pair of the working chambers on both sides of the vane in the rotational direction communicates with each other via the pressure relief groove.

ELECTRIC COMPRESSOR

An electric compressor includes a housing, a drive shaft, a motor, a movable scroll, and a fixed block. The fixed block is fixed to the housing and disposed between the motor and the movable scroll. The motor includes a stator and a rotor. The rotor has an introduction passage that is formed through the rotor in an axial direction of the drive shaft. The drive shaft includes a balance weight that is disposed between the fixed block and the motor and extends to a position where the balance weight covers at least a part of the introduction passage in a radial direction of the drive shaft in a view in the axial direction. The introduction passage includes a first passage located outward of the balance weight in a circumferential direction of the rotor and the drive shaft, and a second passage facing the balance weight in the axial direction. 1. An electric compressor comprising:a housing;a drive shaft that is disposed in the housing and rotatable around an axis of the drive shaft;a motor disposed in the housing and configured to rotate the drive shaft;a fixed scroll fixed to and disposed in the housing;a movable scroll disposed in the housing and connected to the drive shaft, the movable scroll being revolved by rotation of the drive shaft, wherein a compression chamber that compresses refrigerant is formed between the movable scroll and the fixed scroll; anda fixed block fixed to the housing and disposed between the motor and the movable scroll, the fixed block supporting the drive shaft such that the drive shaft is rotatable, the fixed block defining a motor chamber in the housing to accommodate the motor, whereinthe housing has an inlet through which refrigerant is drawn into the motor chamber,the motor includes a stator fixed in the motor chamber and a rotor fixed to the drive shaft, disposed in the stator, and rotatable together with the drive shaft,the rotor has an introduction passage that is formed through the rotor in an axial direction of the drive shaft, ...

CENTRIFUGAL SUCTION-TYPE HYBRID VANE FLUID MACHINE

The present invention relates to a centrifugal suction-type hybrid vane fluid machine and, more particularly, to a centrifugal suction-type hybrid vane fluid machine wherein a cam ring, which rotates inside a compressor, has a plurality of final intake openings formed through the same from the inner peripheral edge to the outer peripheral edge thereof, thereby facilitating inflow of a fluid during rotation; an oil passage is formed therein so as to seal inner constituent elements and to apply a backpressure of vanes, thereby preventing leakage of the fluid and reducing friction; the same number of initial fluid discharge openings are formed as that of the vane or fluid chambers, thereby improving the efficiency of the compressor; and the cam ring is installed eccentrically so as to increase the rotational contact force, thereby improving the efficiency of the compressor while having all advantages of conventional compressors. 1. A centrifugal suction-type hybrid vane fluid machine comprising:{'b': '20', 'a rotational shaft () rotatably installed by a rotation means;'}{'b': 30', '20', '20, 'a cam ring () fixedly coupled to the rotational shaft () so as to rotate together with the rotational shaft ();'}{'b': 40', '30', '20', '41', '30', '30, 'a cylinder () which has the cam ring () coupled to the rotational shaft () and installed therein, which has a plurality of vane grooves () cut towards the installed camp ring (), and which has an inner peripheral edge one or more outer peripheral edges of the cam ring () contacts;'}{'b': 50', '41', '40', '30', '30', '40, 'vanes () which correspond to and are inserted into the plurality of vane grooves () of the cylinder (), and whose one end corresponds to and contact the outer peripheral edge of the cam ring () so as to partition a space between the cam ring () and the cylinder () and to form a plurality of fluid chambers;'}{'b': 60', '64', '40', '40', '30', '50, 'a main flange () and a secondary flange () which correspond to ...

Scroll compressor

A scroll compressor includes a slider including a cylindrical portion supported by a rocking bearing provided on an orbiting scroll so that it rotates freely, and a balance weight portion connected to the cylindrical portion. When a direction opposite to an eccentric direction of the orbiting scroll is a counter eccentric direction and a direction of a central axis of the rocking bearing is a Z-axis direction, the balance weight portion includes a main weight portion provided at a position distant from a center of rotation of the slider in the counter eccentric direction, and a counter-weight portion provided at a position spaced away from the orbiting scroll than a position of a center of the rocking bearing in the Z-axis direction and at a position distant from the center of rotation of the slider in the eccentric direction.

Displacement pump

To provide a displacement pump that can be assembled while properly maintaining side clearances. The displacement pump (100, 101, 102, 103, 104, 105) of the present invention for sucking and discharging a fluid such as gasoline vapor by changing pressure in a space constituted by an outer peripheral surface of a rotor (1) and an inner wall surface of a casing (2), comprising a side clearance adjusting member (4), rotating with respect to the pump main body (6), for moving a shaft (3) integrally formed with the rotor (1) in an axial direction of the shaft (3).

DISPLACEMENT MACHINE ACCORDING TO THE SPIRAL PRINCIPLE, METHOD FOR OPERATING A DISPLACEMENT MACHINE, VEHICLE AIR-CONDITIONING SYSTEM, AND VEHICLE

The invention relates to a displacement machine according to the spiral principle, in particular a scroll compressor or scroll expander, with a high-pressure chamber, a low-pressure chamber and an orbiting displacement spiral, which engages in a counter-spiral such that chambers are formed between the displacement spiral and the counter-spiral for receiving a working medium, wherein a counter-pressure chamber is formed between the low-pressure chamber and the displacement spiral. According to the invention a pressure regulating device which is fluidically connected to the counter-pressure chamber sets a pressure difference between the counter-pressure chamber and the low-pressure chamber by means of a set value specified by the computing unit. 1. A displacement machine according to the spiral principle , in particular a scroll compressor or scroll expander , with a high-pressure chamber , a low-pressure chamber and an orbiting displacement spiral , which engages in a counter-spiral such that chambers are formed between the displacement spiral and the counter-spiral for receiving a working medium ,wherein a counter-pressure chamber is formed between the low-pressure chamber and the displacement spiral,wherein a pressure regulating device which is fluidically connected to the counter-pressure chamber sets a pressure difference between the counter-pressure chamber and the low-pressure chamber by means of a set value specified by the computing unit, and{'sub': '2', 'wherein the working medium is COand/or R134a and/or R1234yf and/or butane and/or ethanol and/or cyclopentan.'}2. The displacement machine according to claim 1 , wherein radially inward migrating chambers are formed between the displacement spiral and the counter-spiral claim 1 , in order to suck in a working medium claim 1 , in particular a refrigerant claim 1 , from the low-pressure chamber claim 1 , to compress it and to eject it into the high-pressure chamber.3. The displacement machine according to claim ...

MOTOR DRIVEN COMPRESSOR APPARATUS INCLUDING SWING PIN

A motor driven compressor apparatus includes a rotary shaft rotatably supported in a housing, an eccentric bushing eccentrically coupled to the rotary shaft, and a swing pin configured to connect the eccentric bushing and the rotary shaft with each other, wherein the rotary shaft is provided with a flow path configured to pass through the center of a cross-section in the longitudinal direction and, in one direction at which the eccentric bushing is disposed, a first pin insertion hole which communicates with the flow path and into which the swing pin is inserted, the eccentric bushing is provided with a second pin insertion hole into which the swing pin is inserted in the other direction at which the rotary shaft is disposed, and refrigerant leaks between the swing pin and the first pin insertion hole. 1. A motor driven compressor apparatus comprising:a rotary shaft rotatably supported in a housing;an eccentric bushing eccentrically coupled to the rotary shaft; anda swing pin configured to connect the eccentric bushing and the rotary shaft with each other, wherein the rotary shaft is provided with a flow path configured to pass through a center of a cross-section in the longitudinal direction and, in one direction in which the eccentric bushing is disposed, a first pin insertion hole that communicates with the flow path and into which the swing pin is inserted,wherein the eccentric bushing is provided with a second pin insertion hole into which the swing pin is inserted in the other direction in which the rotary shaft is disposed, andwherein refrigerant is configured to leak between the swing pin and the first pin insertion hole.2. The motor driven compressor apparatus of claim 1 , further comprising:a center plate fixed to an inside of the housing;an orbiting scroll disposed in one direction of the eccentric bushing and s configured to orbit by the rotary shaft; anda back pressure chamber surrounded by the center plate between the center plate and the orbiting ...

MOTOR-OPERATED COMPRESSOR

A motor-operated compressor includes a casing having a motor chamber that accommodates a driving motor. The compressor also includes a frame. A first scroll having a first spiral wrap is connected to one side of the frame. A second scroll is provided between the frame and the first scroll. The second scroll has a second spiral wrap that engages with the first spiral warp to form compression chambers between the first and second spiral wraps. The compressor also includes a rotation shaft connected at one end to the driving motor and at an opposite end to the second scroll. The compressor includes a back pressure space defined by a balance weight axially separated from a rear surface of the second scroll. A back pressure passage fluidly connects the compression chambers with the back pressure space. 1. A motor-operated compressor , comprising:a casing having a motor chamber;a frame provided adjacent one end of the motor chamber;a driving motor positioned on one side of the frame and accommodated in the motor chamber;a first scroll supported on an opposite side of the frame and having a first spiral wrap;a second scroll provided between the frame and the first scroll, the second scroll having a second spiral wrap engaged with the first spiral wrap, and forming compression chambers between the first and second wraps while performing an orbiting motion relative to the first scroll by receiving a rotational force of the driving motor;a rotation shaft having one end connected to a rotor of the driving motor and another end eccentrically coupled to the second scroll to transfer the rotational force of the driving motor to the second scroll;a balance weight coupled to the rotation shaft, one surface of the balance weight facing a rear surface of the second scroll;a sealing member provided between the rear surface of the second scroll and the one surface of the balance weight to form a back pressure space between the rear surface of the second scroll and the one surface of ...

UNIAXIAL ECCENTRIC SCREW PUMP

A uniaxial eccentric screw pump includes: a stator 32 having a female threaded inner peripheral surface; a rotor 33 configured to be insertable into the stator 32, and formed of a male threaded shaft body; an exterior body 31 configured to be movable between a first position where the exterior body 31 is capable of compressing the stator 32 and a second position where the exterior body 31 at least alleviates a compression state of the stator 32; and guide members 55, 56 configured to restrict a movement of the exterior body 31 in a circumferential direction of the stator while allowing a movement of the exterior body 31 in a radial direction of the stator by guiding an end portion of the exterior body 31. 1. A uniaxial eccentric screw pump comprising:a stator having a female threaded inner peripheral surface;a rotor configured to be insertable into the stator, and formed of a male threaded shaft body;an exterior body configured to be movable between a first position where the exterior body is capable of compressing the stator and a second position where the exterior body at least alleviates a compression state of the stator; anda guide member configured to restrict a movement of the exterior body in a circumferential direction of the stator while allowing a movement of the exterior body in a radial direction of the stator by guiding an end portion of the exterior body.2. The uniaxial eccentric screw pump according to claim 1 , whereinthe end portion of the exterior body has an engaging portion on an end surface thereof, andthe guide member has a portion to be engaged which positions the engaging portion in the circumferential direction while allowing a movement of the engaging portion in the radial direction of the stator.3. The uniaxial eccentric screw pump according to further comprising a mounting portion on which the guide member is mounted claim 1 , whereinthe guide member is formed in an annular shape, and is mounted on the mounting portion.4. The uniaxial ...

SCROLL COMPRESSOR AND METHOD OF MANUFACTURING THE SAME

A scroll compressor includes a fixed scroll including a spiral unit, an orbiting scroll including a spiral unit and combined with the spiral unit of the fixed scroll to form a compression chamber for compressing refrigerant, a main shaft for transmitting drive power to the orbiting scroll, an electric motor unit configured to rotate the main shaft, and a first balancer for compensating unbalance of the orbiting scroll with respect to a rotation center of the main shaft. The first balancer has an outline in a cylinder shape, and includes a high-density part made of a high-density material, and a low-density part made of a low-density material having a density lower than a density of the high-density material. 1. A scroll compressor comprising:a fixed scroll including a spiral unit;an orbiting scroll including a spiral unit and combined with the spiral unit of the fixed scroll to form a compression chamber for compressing refrigerant;a main shaft for transmitting drive power to the orbiting scroll;an electric motor unit configured to rotate the main shaft; anda first balancer for compensating unbalance of the orbiting scroll with respect to a rotation center of the main shaft,the first balancer having an outline in a cylinder shape, and including a high-density part made of a high-density material, and a low-density part made of a low-density material having a density lower than a density of the high-density material,the low-density part covering an outer peripheral surface of the high-density part.2. The scroll compressor of claim 1 , whereinthe low-density part of the first balancer includes a shaft hole through which the main shaft is provided, a high-density part housing hole for housing the high-density part, and a low-density part fastening hole for fastening with the high-density part,the high-density part of the first balancer includes a high-density part fastening hole for fastening with the low-density part of the first balancer, andpositions of the high- ...

SCROLL COMPRESSOR

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. 1. A compressor , comprising:a casing;a drive motor provided in the inner space of the casing;a rotary shaft coupled to the driving motor;an orbiting scroll comprising an orbiting end plate including a rotary shaft coupler coupled to the rotary shaft, and an orbiting wrap that extends toward the casing along the circumference of orbiting end plate from the rotary shaft coupler;a fixed scroll comprising a fixed end plate includes a center provided to be inserted into the rotary shaft, a fixed wrap that extends along the circumference of fixed end plate to engage with the orbiting wrap to compress a refrigerant, a plurality of discharge hole provided to penetrate to the fixed end plate near the center to discharge the refrigerant;wherein orbiting scroll further comprises a communication groove provided to recess on a portion of the one surface facing the fixed wrap.2. The compressor according to claim 1 , wherein the discharge hole include a first discharge hole provided inside than the fixing wrap and penetrating the fixed end plate claim 1 , and a second discharge hole spaced apart from the first discharge hole and penetrating the fixed end plate claim 1 , wherein the length of the communication groove is ...

SCROLL TYPE COMPRESSOR

A scroll type compressor includes a motor including a rotor; a rotatable shaft coupled to the rotor; a frame disposed adjacent to the motor to support the rotatable shaft; a fixed scroll coupled to the frame; an orbiting scroll eccentrically coupled to the rotatable shaft, wherein the orbiting scroll is engaged with the fixed scroll to orbit relative to the fixed scroll; and a balance weight including: a coupling portion having an inner opening defined therein receiving the rotatable shaft, wherein the coupling portion is coupled to and between the rotor and the frame; and a weight portion extending from an outer periphery of the coupling portion. 1. A scroll type compressor comprising:a casing that defines an inner space therein;a motor disposed in the inner space of the casing and configured to generate a rotating force, the motor comprising a stator and a rotor;a rotatable shaft coupled to the rotor of the motor;a frame disposed at a side of the motor and configured to support the rotatable shaft;a fixed scroll coupled to the frame, the fixed scroll and the frame defining a compressing chamber therebetween;an orbiting scroll that is eccentrically coupled to the rotatable shaft, that is located in the compressing chamber, and that is engaged with the fixed scroll, the orbiting scroll being configured to orbit relative to the fixed scroll; and a coupling portion that defines an inner opening therein receiving the rotatable shaft, the coupling portion being coupled to the rotatable shaft at a position between the rotor and the frame, and', 'a weight portion that extends from an outer periphery of the coupling portion., 'a balance weight comprising2. The scroll type compressor of claim 1 , wherein the rotatable shaft comprises a stopping shoulder that protrudes from an outer circumferential surface of the rotatable shaft claim 1 , andwherein the balance weight is coupled to a position between the rotor and the stopping shoulder.3. The scroll type compressor of claim ...

METHOD AND APPARATUS FOR PRESSURE EQUALIZATION IN ROTARY COMPRESSORS

A high side compressor system includes a compressor housing, motor, and a compression chamber. The compression chamber is disposed within the compressor housing. An accumulator is fluidly coupled to the compressor housing via a pressure-equalization tube. A pressure-equalization valve is disposed in the pressure-equalization tube. The pressure-equalization valve closes access to the pressure-equalization tube responsive to an electrical current being applied to the pressure-equalization valve. The pressure-equalization valve is electrically coupled to a compression mechanism such that interruption of electrical current to the compression mechanism interrupts electrical current to the pressure-equalization valve thereby opening the pressure-equalization valve 1. A rotary compressor system comprising:a motor disposed within a compressor housing;an accumulator fluidly coupled to the compressor housing via a pressure-equalization tube;a pressure-equalization valve disposed in the pressure-equalization tube to limit refrigerant flow through the pressure-equalization tube;wherein the pressure-equalization valve is configured to control access to the pressure-equalization tube responsive to whether an electrical current is applied to the pressure-equalization valve;responsive to a determination that the electrical current is applied to the pressure-equalization valve, the pressure-equalization valve closes access to the pressure-equalization tube; andwherein the pressure-equalization valve is electrically coupled to the motor such that interruption of the electrical current to the motor interrupts the electrical current to the pressure-equalization valve thereby opening the pressure-equalization valve.2. The rotary compressor system of claim 1 , wherein the pressure-equalization valve is located outside the compressor housing.3. The rotary compressor system of claim 2 , wherein the pressure-equalization valve is electrically coupled to the compressor housing via a terminal ...

SCROLL COMPRESSOR

A scroll compressor may include an orbiting scroll; a non-orbiting scroll engaged with the orbiting scroll to form a pair of compression chambers between the orbiting scroll and the non-orbiting scroll; a back pressure chamber assembly coupled to the non-orbiting scroll to form a back pressure chamber to support the non-orbiting scroll toward the orbiting scroll; a first back pressure passage that connects a first intermediate pressure chamber in the compression chamber and the back pressure chamber; a second back pressure passage that connects a second intermediate pressure chamber having a higher pressure than the first intermediate pressure chamber and the back pressure chamber; and a back pressure control valve configured to selectively open and close the first back pressure passage and the second back pressure passage according to an operation mode. The back pressure control valve moves to a first position at which the first back pressure passage is open and the second back pressure passage is closed in a power operation, and moves to a second position at which the first back pressure passage is closed and the second back pressure passage is open in a saving operation. 1. A scroll compressor , comprising:a casing in which a sealed inner space is divided into a suction space and a discharge space;an orbiting scroll that performs an orbiting movement in the inner space of the casing;a non-orbiting scroll engaged with the orbiting scroll to form a pair of compression chambers between the orbiting scroll and the non-orbiting scroll;a back pressure chamber assembly coupled to the non-orbiting scroll to form a back pressure chamber so as to support the non-orbiting scroll toward the orbiting scroll;a first back pressure passage that connects a first intermediate pressure chamber in the pair of pressure chambers and the back pressure chamber;a second back pressure passage that connects a second intermediate pressure chamber and the back pressure chamber in the pair of ...

SUPERCHARGER HAVING ROTOR WITH PRESS-FIT STUB SHAFTS

A supercharger constructed in accordance to one example of the present disclosure includes a housing, a first rotor, a second rotor and a rotor shaft assembly. The first and second rotors are received in cylindrical overlapping chambers of the housing. The first rotor has a central longitudinal passage. The rotor shaft assembly rotatably supports the first rotor and includes a first rotor shaft and a separate and distinct second rotor shaft. The first and second rotor shafts are press-fit into the central passage defined in the first rotor. 1. A supercharger comprising:a housing;a first rotor and a second rotor received in cylindrical overlapping chambers of the housing, the first rotor having a central longitudinal passage; anda rotor shaft assembly rotatably supporting the first rotor and including a first rotor shaft and a separate and distinct second rotor shaft, wherein the first and second rotor shafts are press-fit into the central longitudinal passage defined in the first rotor.2. The supercharger of wherein the first and second rotor shafts are stub shafts.3. The supercharger of wherein the first and second rotor shafts are offset from each other in the central longitudinal passage.4. The supercharger of claim 1 , further comprising:a front bearing disposed in the housing that supports the first rotor shaft;a rear bearing disposed in the housing that supports the second rotor shaft.5. The supercharger of wherein the first rotor shaft includes a first insertion portion that is received by the central longitudinal passage claim 4 , an intermediate seal engaging portion configured to be engaged by a seal claim 4 , a front bearing engaging portion that is supported by the front bearing claim 4 , and an isolator engaging portion that is configured to engage a timing gear.6. The supercharger of wherein the second rotor shaft includes a second insertion portion that is received by the central longitudinal passage and a rear bearing engaging portion that is ...

COMPRESSOR WITH UNLOADER COUNTERWEIGHT ASSEMBLY

A compressor is provided and may include a shell, an orbiting scroll, a driveshaft and an unloader counterweight. The orbiting scroll may be disposed within the shell and include a boss portion. The driveshaft may include an eccentric pin and rotate about a longitudinal axis. The unloader counterweight assembly may include a first, a second end, and a longitudinal opening extending therebetween. The eccentric pin of the driveshaft may be disposed within the longitudinal opening at the first end of the unloader counterweight assembly. The boss portion of the orbiting scroll may be disposed within the longitudinal opening at the second end of the unloader counterweight assembly 1. A compressor comprising:a shell;an orbiting scroll disposed within said shell and including a boss portion;a driveshaft having an eccentric pin extending from a first end thereof, said driveshaft operable to rotate about a longitudinal axis; andan unloader counterweight assembly having a first end, a second end, and a longitudinal opening extending from said first end to said second end, wherein said eccentric pin is disposed within said longitudinal opening at said first end, and the boss portion of said orbiting scroll is disposed within said longitudinal opening at said second end.2. The compressor of claim 1 , wherein said unloader counterweight assembly includes a bearing assembly disposed within said longitudinal opening claim 1 , and wherein said boss portion of said orbiting scroll is further disposed within said bearing assembly.3. The compressor of claim 1 , wherein said eccentric pin includes a substantially D-shaped cross-section extending from a first end of said driveshaft claim 1 , and said longitudinal opening includes a substantially D-shaped portion claim 1 , and wherein the D-shaped cross-section of said eccentric pin is disposed within the D-shaped portion of said longitudinal opening.4. The compressor of claim 3 , wherein said unloader counterweight assembly includes a ...

COMPRESSOR

In order to adapt a balance piston unit of a compressor to a high speed, and to extend a service life of the compressor, a screw compressor according to the present invention includes a screw rotor including a rotor shaft, a radial bearing, a thrust plate, a balance mechanism, which is a slide bearing, a lubrication oil supply flow passage for supplying a lubrication oil, and a working fluid supply flow passage for supplying a working fluid for pressing the balance mechanism toward the thrust plate so that a reverse thrust load acts on the thrust plate. 2. The compressor according to claim 1 , comprising a control unit that adjusts the pressure of the working fluid depending on a magnitude of the thrust load claim 1 , thereby controlling a force to press the slide bearing by the balance piston unit.3. The compressor according to claim 2 , comprising:a lubricant supply flow passage that supplies a gap between the thrust plate and the slide bearing with the lubricant,wherein the control unit controls at least one of a flow rate and a pressure of the lubricant in the lubricant supply flow passage depending on the magnitude of the thrust load.4. The compressor according to claim 3 , wherein the control unit decreases the pressure of the working fluid claim 3 , and at least one of the flow rate and the pressure of the lubricant in the lubricant supply flow passage upon at least a startup.5. The compressor according to claim 1 , wherein:the slide bearing includes a pad opposing the thrust plate; andthe pad is configured so as to tilt following the thrust plate.6. The compressor according to claim 1 , wherein the radial bearing is a slide bearing.7. The compressor according to claim 2 , comprising:a discharge pressure sensor that measures a discharge pressure of the compressor; anda suction pressure sensor that measures a suction pressure of the compressor,wherein the control unit uses a difference between a measurement value by the discharge pressure sensor and a ...

Scroll fluid machine

Provided is a scroll fluid machine that makes it possible to attenuate the bending stress applied to the base of a wall body having an inclined section. The scroll fluid machine is provided with a wall body inclined section in which the distance between the facing surfaces of an end plate of a fixed scroll and an end plate of a rotating scroll that face each other continuously decreases from the outer circumferential side toward the inner circumferential side. A mesh clearance that is a gap between wall bodies formed when the wall bodies mesh with each other is larger on the outer circumferential side of the inclined section than on the inner circumferential side of the inclined section. The mesh clearance is made larger by drawing the wall surface of a wall body further back toward the central side of the wall body in the thickness direction than the original wall surface profile thereof.

ELECTRIC COMPRESSOR AND REFRIGERATION DEVICE HAVING SAME

An electric compressor and a refrigeration device having the same are provided. The electric compressor includes: an electric motor having a stator and a rotor; a compressing mechanism having an eccentric shaft rotatably and slidably connected to the rotor and defining a compressing chamber therein, the compressing chamber being configured to perform a compression by the eccentric shaft; and a torque damping device configured to connect the rotor with the eccentric shaft, in which during the compression of the compressing chamber, a difference between a rotation angle of the eccentric shaft and a rotation angle of the rotor is a phase angle which is increased and decreased. 1. An electric compressor , comprising:an electric motor having a stator and a rotor;a compressing mechanism having an eccentric shaft rotatably and slidably connected to the rotor and defining a compressing chamber therein, the compressing chamber being configured to perform a compression by the eccentric shaft; anda torque damping device configured to connect the rotor with the eccentric shaft,wherein during the compression of the compressing chamber, a difference between a rotation angle of the eccentric shaft and a rotation angle of the rotor is a phase angle which is increased and decreased.2. The electric compressor according to claim 1 , wherein the torque damping device comprises one of a torsion bar spring claim 1 , a helical torsion coil spring and a spiral spring which have actuation ends connected to the eccentric shaft and the rotor respectively.3. The electric compressor according to claim 2 , wherein one of the actuation ends of the torsion bar spring is mounted in the eccentric shaft.4. The electric compressor according to claim 2 , wherein a part of the actuation ends of the torsion bar spring is slidably fitted with an inner diameter of the rotor or a shaft end portion of the eccentric shaft.5. The electric compressor according to claim 2 , wherein one of the actuation ends of ...

ROTARY COMPRESSOR

A rotary compressor including an attachment leg which is fixed to a bottom portion of a compressor housing and includes three locking holes which are locking holes to which three corresponding elastic supporting members, which support the compressor housing, are locked and which are disposed to be separated from each other in a circumferential direction on an outside in a radial direction of the compressor housing, in which, of the three locking holes, a distance of a first locking hole which is disposed closest to an accumulator from a housing center, is greater than a distance of each of the other two locking holes from the housing center. 1. A rotary compressor comprising:a sealed vertically-placed cylindrical compressor housing which is provided with a discharging unit of a refrigerant on a top portion and which is provided with an inlet unit of the refrigerant on a bottom portion;a rotary-type compressing unit which is disposed on the bottom portion of the compressor housing, compresses the refrigerant which is sucked in from the inlet portion, and discharges the refrigerant from the discharging unit;a motor which is disposed on the top portion of the compressor housing and which drives the rotary-type compressing unit;a vertically-placed cylindrical accumulator which is fixed to a side portion of the compressor housing and which is connected to the inlet portion; andan attachment leg which is fixed to the bottom portion of the compressor housing and includes three locking holes which are locking holes to which three corresponding elastic supporting members, which support the compressor housing, are locked and which are disposed to be separated from each other in a circumferential direction on an outside in a radial direction of the compressor housing,wherein, of the three locking holes, a distance of a first locking hole which is disposed closest to the accumulator from a housing center, is greater than a distance of each of the other two locking holes from ...

PROGRESSIVE CAVITY PUMP

A progressive cavity pump comprising a casing, a helical stator including a helical cylinder and a helical rotor capable of rotating inside said helical cylinder. The helical stator also comprises at least one compensator arranged in said casing, between the casing and said helical cylinder; said helical cylinder and said compensator being deformable in a direction perpendicular to the longitudinal axis of the casing. 1. A progressive cavity pump comprising:a cylindrical casing having a longitudinal axis, said casing being provided with an inlet opening at one end and with an outlet opening at its opposite end,a helical stator contained within said casing, said helical stator comprising a helical cylinder having a central axis coinciding with the longitudinal axis of said casing;a helical rotor suitable for rotating inside said helical cylinder so as to move a fluid from the inlet opening toward the outlet opening,wherein said helical stator further comprises at least one compensator arranged within said casing, between the casing and said helical cylinder, said helical cylinder and said compensator being adapted to deform in a direction perpendicular to said longitudinal axis.3. The progressive cavity pump according to claim 1 , wherein said at least one compensator has a closed profile.4. The progressive cavity pump according to claim 1 , wherein said at least one compensator has an elliptical cross-section.5. The progressive cavity pump according to claim 1 , wherein said at least one compensator has an open profile.6. The progressive cavity pump according to claim 1 , wherein said at least one compensator is arranged on a concave portion of said helical cylinder.7. The progressive cavity pump according to claim 1 , wherein said at least one compensator is arranged on a convex portion of said helical cylinder.8. The progressive cavity pump according to claim 1 , wherein said helical stator comprises a plurality of compensators evenly distributed along the casing. ...

Compressor Having Capacity Modulation Assembly

A compressor may include a shell, first and second scrolls, a seal assembly, a modulation control chamber, and a modulation control valve. The first scroll may include a first end plate having a biasing passage extending therethrough. The seal assembly may isolate a discharge pressure region from a suction pressure region. The seal assembly and the first scroll may define an axial biasing chamber therebetween that communicates with the axial biasing chamber and a first pocket between the first and second scrolls. The modulation control chamber may be fluidly coupled with the biasing chamber by a first passage. The modulation control valve may be fluidly coupled with the modulation control chamber by a second passage and movable between a first position allowing communication between the second passage and the suction pressure region and a second position restricting communication between the second passage and the suction pressure region.

SCROLL COMPRESSOR

A scroll compressor includes a compression mechanism, a crankshaft, upper and lower bearings, and a drive motor. The compression mechanism includes fixed and movable scrolls engaged with each other to form a compression chamber. The crankshaft has a main shaft and an eccentric portion eccentrically disposed at one end of the main shaft and coupled to a back side of the movable scroll. The upper and lower bearings support upper and lower portions of the main shaft. The drive motor has a stator and a rotor coupled to the main shaft to rotate the movable scroll. At least one of the main shaft and the rotor is provided with a weight arranged to reduce distortion of the crankshaft caused by a fluid load generated in the compression chamber and applied to the eccentric portion during rotation. 1. A scroll compressor , comprising:a compression mechanism including a fixed scroll and a movable scroll engaged with each other to form a compression chamber configured to compress a fluid;a crankshaft having a main shaft and an eccentric portion eccentrically disposed at one end of the main shaft and coupled to a back side of the movable scroll;an upper bearing supporting an upper portion of the main shaft of the crankshaft;{'b': '40', 'a lower bearing supporting a lower portion of the main shaft of the crankshaft (); and'}a drive motor having a stator and a rotor coupled to the main shaft of the crankshaft to rotate the movable scroll,at least one of the main shaft of the crankshaft and the rotor of the drive motor being provided with a weight, the weight being arranged to reduce distortion of the crankshaft caused by a fluid load generated in the compression chamber and applied to the eccentric portion during rotation.2. The scroll compressor of claim 1 , whereinthe weight includes a fluid-induced distortion reducing weight arranged to reduce distortion of the crankshaft in a direction of the fluid load, and an upper fluid-induced distortion reducing weight disposed at an upper ...

SCROLL COMPRESSOR

The area of a back-pressure chamber is increased so that pressing force on a rotational scroll due to back pressure is enhanced to reduce leakage of refrigerant gas through a chip clearance, thereby achieving improved compression efficiency. 1. A scroll compressor comprising: a fixed scroll,', 'a rotational scroll facing the fixed scroll to form a compression pocket for compressing refrigerant gas,', 'a thrust plate configured to support a load of the rotational scroll in a thrust direction, and', 'a main shaft configured to drive the rotational scroll;, 'a scroll compression mechanism including'}a back-pressure supplying mechanism configured to supply part of the refrigerant gas compressed through the scroll compression mechanism to a back side of the thrust plate as back pressure; anda housing that houses the scroll compression mechanism and the back-pressure supplying mechanism, wherein: a back-pressure chamber formed on a thrust surface facing the back side of the thrust plate in the housing,', 'a back-pressure supplying path through which the part of the compressed refrigerant gas is extracted and supplied to the back-pressure chamber, and', 'an inner seal ring and an outer seal ring disposed radially inside and outside, respectively, of the back-pressure chamber to prevent leakage of the back pressure from the back-pressure chamber,, 'the back-pressure supplying mechanism includes'}the inner seal ring is provided to be pressed between the thrust plate and the thrust surface, andthe outer seal ring is provided to be pressed between an inner peripheral surface of the housing and an outer peripheral surface of the thrust plate.2. A scroll compressor comprising: a fixed scroll,', 'a rotational scroll facing the fixed scroll to form a compression pocket for compressing refrigerant gas,', 'a thrust plate configured to support a load of the rotational scroll in a thrust direction, and', 'a main shaft configured to drive the rotational scroll;, 'a scroll compression ...

COMPRESSOR AND REFRIGERATION SYSTEM

A compressor and a refrigeration system are provided. The compressor has a shell, an air cylinder assembly and a pressure relief device. The shell has a containing cavity. The air cylinder assembly is disposed in the containing cavity, and has an air suction cavity and a pressure relief channel. The pressure relief channel communicates with the air suction cavity and the containing cavity, and has a pressure relief opening. The pressure relief device is connected with the air cylinder assembly. The pressure relief device moves in the axis direction of the pressure relief channel, so as to open or close the pressure relief opening. 1. A compressor comprising:a shell, wherein the shell comprises a containing cavity;an air cylinder assembly disposed in the containing cavity, wherein the air cylinder assembly comprises an air suction cavity and a pressure relief channel, wherein the pressure relief channel communicates with the air suction cavity and the containing cavity, wherein the pressure relief channel comprises a pressure relief opening; anda pressure relief device connected with the air cylinder assembly, wherein the pressure relief device moves in an axis direction of the pressure relief channel to open or close the pressure relief opening;wherein the through-flow area of the pressure relief device satisfies: 0 Подробнее

Compressor Having Capacity Modulation Assembly

A compressor may include a shell, first and second scrolls, a seal assembly, a modulation control chamber, and a modulation control valve. The first scroll may include a first end plate having a biasing passage extending therethrough. The seal assembly may isolate a discharge pressure region from a suction pressure region. The seal assembly and the first scroll may define an axial biasing chamber therebetween that communicates with the axial biasing chamber and a first pocket between the first and second scrolls. The modulation control chamber may be fluidly coupled with the biasing chamber by a first passage. The modulation control valve may be fluidly coupled with the modulation control chamber by a second passage and movable between a first position allowing communication between the second passage and the suction pressure region and a second position restricting communication between the second passage and the suction pressure region. 1. A compressor comprising:a shell assembly defining a suction-pressure region and a discharge-pressure region, said shell assembly including a partition separating said suction-pressure region from said discharge-pressure region;a first scroll member disposed within said shell assembly and including a first end plate having a discharge passage, a modulation port, and a first spiral wrap extending from said first end plate;a second scroll member disposed within said shell assembly and including a second end plate having a second spiral wrap extending therefrom, said first and second spiral wraps meshingly engaged and forming a series of pockets during orbital displacement of said second scroll member relative to said first scroll member, said modulation port in communication with a first one of said pockets;a floating seal assembly engaged with said partition and isolating said discharge-pressure region from said suction-pressure region, said floating seal assembly defining an axial biasing chamber containing intermediate-pressure ...

SCROLL-TYPE COMPRESSOR

An orbiting scroll is provided with a second communication passage feeding refrigerant gas in a compression chamber toward a back pressure chamber One of or each of an outer circumferential surface of a bush and an inner circumferential surface of a bearing is provided with a first communication passage communicating an upstream side space and a downstream side space The first communication passage is formed so as to avoid an area at which the bush receives a largest load from the plain bearing A part of the refrigerant gas compressed in the compression chamber flows into the downstream side space via the second communication passage the upstream side space and the first communication passage 1. A scroll-type compressor comprising:a rotation shaft;an eccentric shaft fixed to the rotation shaft, the eccentric shaft being offset from a rotation center of the rotation shaft;a cylindrical bush fitted onto the eccentric shaft;a bearing disposed rotatably relative to the bush;an orbiting scroll supported by the bush via the bearing;a fixed scroll disposed to face the orbiting scroll; anda shaft supporting member supporting the rotation shaft and being disposed to face the orbiting scroll at an opposite side from the fixed scroll,whereina compression chamber is formed between the orbiting scroll and the fixed scroll,a back pressure chamber is formed between the orbiting scroll and the shaft supporting member, the orbiting scroll is pressed toward a fixed scroll by pressure of refrigerant gas in the back pressure chamber,refrigerant gas in the compression chamber is compressed in accordance with orbiting motion of the orbiting scroll caused by rotation of the rotation shaft through revolution of the eccentric shaft,the bearing is a plain bearing,the back pressure chamber is divided into an upstream side space and a downstream side space by the bearing,at least one of an outer circumferential surface of the bush and an inner circumferential surface of the bearing comprises a ...

ROTARY FLUID MACHINERY AND METHOD FOR ELIMINATING AXIAL ROTOR DISPLACEMENT

An externally-supported rotary fluid machinery and a method for eliminating axial rotor displacement. The fluid machinery includes a box body, an air cylinder and a rotor, wherein the rotor is eccentrically mounted in the air cylinder; the air cylinder is mounted in the box body; one end of a sliding plate is inserted in the rotor, and the other end is embedded in a wall of the air cylinder; a fluid inlet is provided on the box body, and a fluid outlet is provided on the air cylinder; a support end of the rotor protrudes out of the box body and is supported in a rotor bearing support structure; and a support end of the air cylinder also protrudes out of the box body and is supported in an air cylinder bearing support structure. 1. An externally-supported rotary fluid machinery , comprising a box body , an air cylinder and a rotor , wherein:the rotor is eccentrically mounted in the air cylinder;the air cylinder is mounted in the box body;one end of a sliding plate is inserted in the rotor, and the other end is embedded in a wall of the air cylinder;a fluid inlet is provided on the box body;a fluid inlet is provided on a working section of the air cylinder;and a fluid outlet is provided on a support section of the air cylinder; andwherein a support end of the rotor protrudes out of the box body and is supported in a rotor bearing support structure, and/or a support section of the air cylinder also protrudes out of the box body and is supported in an air cylinder bearing support structure.2. The externally-supported rotary fluid machinery according to claim 1 , wherein the rotor bearing support structure is mounted in an airtight space formed by a shaft sealing structure to improve a lubrication cooling effect claim 1 , and prevent a high pressure high temperature fluid from polluting a bearing and a lubricant in the rotor bearing support structure.3. The externally-supported rotary fluid machinery according to claim 1 , wherein the air cylinder bearing support ...

GEAR, BALANCER DEVICE, AND BALANCER DEVICE PROVIDED WITH OIL PUMP

A gear configured to rotate as a unit with a shaft, the gear includes: a plurality of annular grooves formed on both side surfaces of the gear in a direction of a rotation axis of the shaft, at least partially overlapped when viewed from the direction of the rotation axis, and at least partially overlapped in a radial direction with respect to the rotation axis. 1. A gear configured to rotate as a unit with a shaft , the gear comprising:a plurality of annular grooves formed on both side surfaces of the gear in a direction of a rotation axis of the shaft, at least partially overlapped when viewed from the direction of the rotation axis, and at least partially overlapped in a radial direction with respect to the rotation axis.2. The gear as claimed in claim 1 , wherein the plurality of the annular grooves includes a first annular groove provided on one side surface of the both side surfaces of the gear in the direction of the rotation axis claim 1 , and a second annular groove provided on a side opposite to the first annular groove; and depths of deepest bottom portions of the first annular groove and the second annular groove in the direction of the rotation axis are different from each other.3. The gear as claimed in claim 1 , wherein the plurality of the annular grooves includes a first annular groove provided on one side surface of the both side surfaces of the gear in the direction of the rotation axis claim 1 , and a second annular groove provided on a side opposite to the first annular groove; and shapes of the first annular groove and the second annular groove are different from each other when viewed in a section taken along the rotation axis.4. The gear as claimed in claim 3 , wherein the first annular groove includes a first inner circumference surface provided on the rotation axis side in the radial direction with respect to the rotation axis claim 3 , and a first outer circumference surface which confronts the first inner circumference surface claim 3 , ...

SCROLL COMPRESSOR

A scroll compressor includes a compression mechanism, a crankshaft, and a drive motor. The compression mechanism has a fixed scroll and a movable scroll and is configured to compress a fluid. The crankshaft has a main shaft and an eccentric portion eccentrically disposed at one end of the main shaft and coupled to a back side of the movable scroll. The drive motor has a stator and a rotor coupled to the main shaft of the crankshaft to rotate the movable scroll. At least one of the main shaft of the crankshaft and the rotor of the drive motor is provided with a weight. The weight being is arranged to balance a centrifugal force of the movable scroll during rotation, and to reduce warpage of the crankshaft caused by balancing the centrifugal force of the movable scroll. 1. A scroll compressor , comprising:a compression mechanism having a fixed scroll and a movable scroll and being configured to compress a fluid;a crankshaft having a main shaft and an eccentric portion eccentrically disposed at one end of the main shaft and coupled to a back side of the movable scroll; anda drive motor having a stator and a rotor coupled to the main shaft of the crankshaft to rotate the movable scroll, to balance a centrifugal force of the movable scroll during rotation, and', 'to reduce warpage of the crankshaft caused by balancing the centrifugal force of the movable scroll., 'at least one of the main shaft of the crankshaft and the rotor of the drive motor being provided with a weight, the weight being arranged'}2. The scroll compressor of claim 1 , whereinthe weight includes a balancing weight arranged to balance the centrifugal three of the movable scroll during rotation, and a warpage reducing weight arranged to reduce warpage of the crankshaft caused by balancing the centrifugal force of the movable scroll and a centrifugal force of the balancing weight, a first balancing weight having a center of gravity located opposite to the eccentric portion relative to an axial center of ...

CO-ROTATING SCROLL COMPRESSOR AND METHOD FOR DESIGNING THE SAME

A co-rotating scroll compressor includes a driving-side scroll member (), a driven-side scroll member (), a pin ring mechanism (), a driving-side bearing () that rotatably supports the driving-side scroll member (), and a driven-side bearing () that rotatably supports the driven-side scroll member (). A center of gravity of at least one of the driving shaft (), the driving-side scroll member (), and the driven-side scroll member () is shifted from rotation centers (CL CL) by a predetermined distance. The predetermined distance is set so that a total bearing load obtained by centrifugal force and fluid compression that is 5% of a dynamic load rating of the driving-side bearing () and the driven-side bearing () or more is generated. 1. A co-rotating scroll compressor , comprising:a driving shaft driven by a drive unit so as to rotate;a driving-side scroll member connected to the driving shaft, and comprising a plurality of spiral driving-side walls provided about a center of a driving-side end plate at predetermined angular intervals;a driven-side scroll member comprising spiral driven-side walls, the driven-side walls being provided about a center of a driven-side end plate at predetermined angular intervals and in a number corresponding to the driving-side walls, the driven-side walls being engaged with the corresponding driving-side walls so as to form a compression space;a synchronous driving mechanism that transmits driving force from the driving-side scroll member to the driven-side scroll member so that the driving-side scroll member and the driven-side scroll member rotationally move in a same direction at a same angular velocity;a driving-side bearing that rotatably supports the driving-side scroll member; anda driven-side bearing that rotatably supports the driven-side scroll member, wherein:a center of gravity of at least one of the driving shaft, the driving-side scroll member, or the driven-side scroll member is shifted from a rotation center by a ...

COMPRESSOR

A compressor includes a casing, an electric motor housed in an internal space of the casing, a drive shaft rotated by the electric motor, and a compression mechanism driven by the drive shaft discharge compressed refrigerant to the internal space. The internal space includes a first and second spaces formed near axial ends of the electric motor. The electric motor includes a stator and a rotating member. The stator is fixed to the casing. The rotating member includes a rotor rotatably inserted into the stator. The electric motor has a refrigerant flow path through which the first and second spaces communicate with each other. The refrigerant flow path includes a first flow path into which the refrigerant in the first space or the second space flows, and a rotor flow path extending axially across the rotor and connected to an outflow end of the first flow path. 1. A compressor , comprising:a casing;an electric motor housed in an internal space of the casing;a drive shaft rotated by the electric motor; anda compression mechanism driven by the drive shaft to compress a refrigerant and discharge the compressed refrigerant to the internal space, a first space formed near one axial end of the electric motor, and', 'a second space formed near an other axial end of the electric motor,, 'the internal space including'}the electric motor including a stator and a rotating member, the stator being fixed to the casing, the rotating member including a rotor rotatably inserted into the stator, a first flow path into which the refrigerant in the first space or the second space flows, and', 'a rotor flow path extending axially across the rotor and connected to an outflow end of the first flow path,', 'the first flow path including a second flow path extending from the rotor flow path toward an outer periphery of the rotor., 'the electric motor having a refrigerant flow path through which the first and second spaces communicate with each other, the refrigerant flow path including'}2. ...

GEAR PUMP WITH END PLATES OR BEARINGS HAVING SPIRAL GROOVES

A gear pump includes a housing, at least one gear set and a plurality of end plates. The gear set may be positioned between the end plates so that side surfaces of the gears face corresponding side surfaces of the end plates. The side surfaces of the end plates may have a plurality of spiral grooves positioned directly adjacent the side surface of the gears. The plurality of spiral grooves may have a logarithmic shape. Thus arranged, when the gears rotate, fluid in the pump is forced along the lengths of the spiral grooves, creating a local high pressure region that forces fluid between the side surfaces of the gears and the end plates, minimizing or eliminating contact therebetween. In some embodiments the plurality of spiral grooves may be positioned on bearing surfaces of the pump instead of end plates. 1. A gear pump , comprising:a housing;a drive gear and a driven gear, the drive gear and the drive gear each having gear side surfaces; andfirst and second end plates having plate side surfaces, the plate side surfaces each including a plurality of spiral grooves disposed opposite the gear side surfaces.2. The gear pump of claim 1 , wherein the first and second end plates each has a central opening for receiving a drive shaft and a first opening for receiving an arbor claim 1 , the drive gear coupled to the drive shaft and the driven gear engaged with the drive gear to rotate the driven gear about the arbor claim 1 , wherein the plurality of spiral grooves includes a first groove region positioned adjacent the central opening and a second groove region positioned adjacent the first opening.3. The gear pump of claim 2 , wherein the plurality of spiral grooves of the first groove region have first ends positioned a first distance from the central opening claim 2 , thereby forming a circumferential dam around the central opening.4. The gear pump of claim 2 , wherein the plurality of spiral grooves of the second groove region have first ends positioned a first ...

METHOD AND APPARATUS FOR PRESSURE EQUALIZATION IN ROTARY COMPRESSORS

A high side compressor system includes a compressor housing, motor, and a compression chamber. The compression chamber is disposed within the compressor housing. An accumulator is fluidly coupled to the compressor housing via a pressure-equalization tube. A pressure-equalization valve is disposed in the pressure-equalization tube. The pressure-equalization valve closes access to the pressure-equalization tube responsive to an electrical current being applied to the pressure-equalization valve. The pressure-equalization valve is electrically coupled to a compression mechanism such that interruption of electrical current to the compression mechanism interrupts electrical current to the pressure-equalization valve thereby opening the pressure-equalization valve 1. A rotary compressor system comprising:a compressor housing;a compression mechanism disposed within the compressor housing;an accumulator fluidly coupled to the compressor housing via a pressure-equalization tube;a pressure-equalization valve disposed in the pressure-equalization tube, the pressure-equalization valve closing access to the pressure-equalization tube responsive to an electrical current being applied to the pressure-equalization valve; andwherein the pressure-equalization valve is electrically coupled to the compression mechanism such that interruption of electrical current to the compression mechanism interrupts electrical current to the pressure-equalization valve thereby opening the pressure-equalization valve.2. The rotary compressor system of claim 1 , wherein the pressure-equalization valve is located outside the compressor housing.3. The rotary compressor system of claim 2 , wherein the pressure-equalization valve is electrically coupled to the compressor housing via a terminal.4. The rotary compressor system of claim 1 , wherein the pressure-equalization valve is located within the compressor housing claim 1 ,5. The rotary compressor system of claim 4 , wherein the pressure-equalization ...

SCROLL TYPE COMPRESSOR

A scroll type compressor includes a housing, a rotary shaft rotatably supported in the housing and having an eccentric pin projecting from an end of the rotary shaft, a fixed scroll member and a movable scroll member facing the fixed scroll and forming a pair of compression chambers therewith. The scroll type compressor further includes a balancer-integrated bush having an eccentric hole to receive the eccentric pin and disposed between the eccentric pin and the movable scroll. The balancer-integrated bush is configured to receive rotational force from the rotary shaft to cause the movable scroll member to make an orbital movement. An elastic member provided between the rotary shaft and the balancer-integrated bush in an elastically deformed state to always apply a preload to the movable scroll member via the balancer-integrated bush in a direction that increases an orbital radius of the movable scroll member. 1. A scroll type compressor comprising:a housing;a rotary shaft rotatably supported in the housing;an eccentric pin projecting axially from an end surface of the rotary shaft;a fixed scroll member fixed to the housing;a movable scroll member facing the fixed scroll and forming a compression chamber therewith;a balancer-integrated bush having an eccentric hole to receive the eccentric pin and disposed between the eccentric pin and the movable scroll, the balancer-integrated bush being configured to receive rotational force from the rotary shaft to cause the movable scroll member to make an orbital movement; andan elastic member provided between the rotary shaft and the balancer-integrated bush in an elastically deformed state to always apply a preload to the movable scroll member via the balancer-integrated bush in a direction that increases an orbital radius of the movable scroll member.2. The scroll type compressor according to claim 1 , wherein the balancer-integrated bush has a first surface facing the end surface of the rotary shaft claim 1 , wherein the ...

POSITIVE DISPLACEMENT COMPRESSOR AND DAMPER BEARING SYSTEM

A positive displacement compressor includes a positive displacement compressor rotor; a shaft operative to support the positive displacement compressor rotor; a bearing operative to support the shaft; a first structure having a first squeeze film compression surface; and a second structure having a second squeeze film compression surface spaced apart radially from the first squeeze film compression surface. The first and second structures are constructed to jointly form a squeeze film damper using the first and second squeeze film compression surfaces. The squeeze film damper is operative to provide squeeze film damping of vibrations. An annular oil discharge groove is disposed adjacent to a first end of the squeeze film damper. A first o-ring gland houses a circumferential-sealing o-ring disposed proximate to the first end of the squeeze film damper. A second o-ring gland houses a second circumferential-sealing o-ring disposed proximate to a second end of the squeeze film damper. 1. A damper bearing system , comprising:a rolling element bearing;a first structure having a first squeeze film compression surface;a second structure having a second squeeze film compression surface spaced apart radially from the first squeeze film compression surface, the first structure and the second structure being constructed to jointly form a squeeze film damper using the first squeeze film compression surface and the second squeeze film compression surface, the squeeze film damper being operative to provide squeeze film damping of vibrations passing through the rolling element bearing upon an orbital motion of the second structure relative to the first structure;an annular oil discharge groove disposed at a first end of the squeeze film damper, wherein the oil discharge groove is operative to collect oil for discharge from the squeeze film damper;a first o-ring gland housing a first circumferential-sealing o-ring disposed proximate to the first end of the squeeze film damper; anda ...

HIGH SUCTION PRESSURE SINGLE SCREW COMPRESSOR WITH THRUST BALANCING LOAD USING SHAFT SEAL PRESSURE AND RELATED METHODS

A high suction pressure thrust load balance assembly configured for use with a single screw compressor includes comprises a sealing baffle that is keyed to, so as to be rotatable along with, a main rotor drive shaft of the single screw compressor. The sealing baffle is configured to create a force or load to counteract the axial force of the main rotor drive shaft created during rotation of the main rotor drive shaft using the pressurized oil used to lubricate the mechanical shaft seal of the compressor. 1. A high suction pressure thrust load balance assembly configured for use with a single screw compressor comprising a sealing baffle that is keyed to , so as to be rotatable along with , a main rotor drive shaft of the single screw compressor , wherein the sealing baffle is configured to create a force or load to counteract an axial force of the main rotor drive shaft created during rotation of the main rotor drive shaft.2. The high suction pressure thrust load balance assembly of claim 1 , wherein the assembly is positioned in an area between one or more roller bearings and one or more seals.3. The high suction pressure thrust load balance assembly of claim 2 , wherein the single screw compressor comprises one or more shaft bearings and the high suction pressure load balance assembly is structured to aid in preventing excessive load on the one or more shaft bearings during operation of the compressor under a high input or suction pressure condition.4. The high suction pressure load balance assembly of claim 3 , wherein the high input or suction pressure condition is about greater than or equal to 300 psi.5. The high suction pressure load balance assembly of claim 4 , wherein the high input or suction pressure condition is from about greater than or equal to 300 psi to about 800 psi.6. The high suction pressure load balance assembly of claim 4 , wherein the high input or suction pressure condition is about greater than or equal to 500 psi.7. The high suction ...

Compressor

A compressor includes a deformable groove spaced apart from a key groove and deformable to reduce an impact force or stress generated at an Oldham's ring.

SCROLL COMPRESSOR

A scroll compressor includes a stationary scroll; an orbiting scroll having a pair of first Oldham keyways on one surface thereof, the orbiting scroll defining a compression chamber in combination with the stationary scroll; a frame having a pair of second Oldham keyways and supporting the orbiting scroll; and an Oldham ring for inhibiting rotation of the orbiting scroll, the Oldham ring having a pair of first Oldham keys on one surface thereof and a pair of second Oldham keys on the other surface thereof, the first Oldham keys slidably engaging with the respective first Oldham keyways, the second Oldham keys slidably engaging with the respective second Oldham keyways. The Oldham ring includes at least a pair of projections on the other surface thereof, and the projections have a height such that when the Oldham ring is inclined during simple harmonic motion, one of the projections makes contact with the one surface of the orbiting scroll before each of the first Oldham keys is brought into contact with the corresponding first Oldham keyway at two locations. 1. A scroll compressor comprising:a stationary scroll;an orbiting scroll having a pair of first Oldham keyways on one surface thereof, the orbiting scroll defining a compression chamber in combination with the stationary scroll;a frame having a pair of second Oldham keyways and supporting the orbiting scroll; andan Oldham ring for inhibiting rotation of the orbiting scroll, the Oldham ring having a pair of first Oldham keys on one surface thereof and a pair of second Oldham keys on an other surface thereof, the first Oldham keys slidably engaging with the respective first Oldham keyways, the second Oldham keys slidably engaging with the respective second Oldham keyways,wherein the Oldham ring includes at least a pair of projections on the one surface thereof, andwherein the projections have a height such that when the Oldham ring is inclined during simple harmonic motion, one of the projections makes contact ...

COMPRESSOR

A compressor includes a motor, a balance weight and a partition. The motor includes a rotor having a first end surface and a second end surface. The balance weight is disposed on the first end surface or the second end surface. The partition is disposed on the first end surface or the second end surface. The rotor has a through hole extending from the first end surface to the second end surface. The partition divides, from the through hole, at least one of a front region and a rear region. The front region is located in front of a front edge of the balance weight in a rotational direction of the rotor. The rear region is located behind a rear edge of the balance weight in the rotational direction of the rotor. 1. A compressor comprising:a motor including a rotor having a first end surface and a second end surface;a balance weight disposed on the first end surface or the second end surface; anda partition disposed on the first end surface or the second end surface,the rotor having a through hole extending from the first end surface to the second end surface, and a front region located in front of a front edge of the balance weight in a rotational direction of the rotor and', 'a rear region located behind a rear edge of the balance weight in the rotational direction of the rotor., 'the partition dividing, from the through hole, at least one of'}2. The compressor according to claim 1 , whereinthe partition divides both the front region and the rear region from the through hole,the rotor includes a first cylindrical portion and a second cylindrical portion, the second cylindrical portion being located on an outer side with respect to the first cylindrical portion,the through hole is disposed at the first cylindrical portion,the partition covers the first cylindrical portion at either the first end surface or the second end surface,the balance weight is disposed on the second cylindrical portion, andthe partition is as thick as the balance weight.3. The compressor ...

Scroll Compressor Having Axial Guide Support

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. 1. A compressor , including a compressor housing , a scroll compressor unit that is arranged in the compressor housing and has a first , stationary compressor body and a second compressor body that is movable in relation to the stationary compressor body , whereof first and second scroll vanes , in the shape of a circle involute , engage in one another to form compressor chambers when the second compressor body is moved in relation to the first compressor body on an orbital path , an axial guide that supports the movable compressor body to prevent movements in a direction parallel to a centre axis of the stationary compressor body and , in an event of movements , guides it in a direction transverse to the centre axis , a drive motor that drives an eccentric drive for the scroll compressor unit , wherein the eccentric drive has an entrainer that is driven by the drive motor , that revolves on a path about a central axis of a drive shaft and that cooperates with an entrainer receptacle in the second compressor body , and a coupling that prevents the second compressor body from rotating freely , the coupling that prevents free rotation has at least two coupling element sets that ...

TWO-CYLINDER HERMETIC COMPRESSOR

In the two-cylinder hermetic compressor, a main bearing is disposed on one surface of a first cylinder, an intermediate plate is disposed on another surface of the first cylinder, the intermediate plate is disposed on one surface of a second cylinder, and an auxiliary bearing is disposed on another surface of the second cylinder. A shaft is constituted by a main shaft portion which has a rotor attached thereto and is supported by the main bearing, a first eccentric portion having a first piston attached thereto, a second eccentric portion having a second piston attached thereto, and an auxiliary shaft portion supported by the auxiliary bearing. A thrust receiving portion is provided on a side of the second eccentric portion facing the auxiliary shaft portion, and the auxiliary bearing is provided with a thrust surface on which the end face of the thrust receiving portion slides while contacting therewith. The thrust surface is provided with a ring groove. 1. A two-cylinder hermetic compressor comprising:an electric motor unit and a compression mechanism unit in a sealed container, wherein the electric motor unit and the compression mechanism unit are connected to each other by a shaft,the electric motor unit includes a stator fixed on an inner surface of the sealed container and a rotor that rotates in the stator,a first compression mechanism unit and a second compression mechanism unit are provided as the compression mechanism unit,the first compression mechanism unit includes a first cylinder and a first piston provided in the first cylinder,the second compression mechanism unit includes a second cylinder and a second piston provided in the second cylinder,a main bearing is disposed on one surface of the first cylinder and an intermediate plate is disposed on another surface of the first cylinder,the intermediate plate is disposed on one surface of the second cylinder and an auxiliary bearing is disposed on another surface of the second cylinder,the shaft includes ...

COMPRESSOR OIL SEPARATION AND ASSEMBLY METHOD

A compressor may include a shell, a compression mechanism, a bearing housing, a shroud, a stator, and a rotor. The compression mechanism includes a scroll member that is attached to the shell. The shroud is rotatably fixed relative to the shell and attached to the bearing housing. The stator is fixed relative to the shell. The shroud may have an annular body including an inner surface defining a center shroud passage. The stator may have an outer surface defining a stator passage. An outer surface of the rotor and an inner surface of the stator may be spaced apart and define a discharge gap in fluid communication with the center shroud passage and the stator passage. A continuous passage may extend between a top surface of the scroll member and a bottom surface of the shroud and may be in fluid communication with the shroud passage.

Expansion Compressor Apparatus and Air Conditioner Having the Same

The invention discloses an expansion compressor apparatus and an air conditioner having the same, wherein the expansion compressor apparatus includes: an expansion cylinder, a compression cylinder, and a connecting shaft, an expansion cylinder air suction passage communicated with an air suction cavity of the expansion cylinder being provided on the expansion cylinder, the expansion compressor apparatus further includes: a control cylinder, the control cylinder being provided with a control cylinder air suction passage and a control cylinder air exhaust passage, both the control cylinder air suction passage and the control cylinder air exhaust passage being provided in a radial direction of the control cylinder, and a communication passage being provided between the control cylinder air exhaust passage and the expansion cylinder air suction passage. The apparatus effectively solves the problem in the prior art that a high-pressure fluid exerts an impact force in an axial direction on a fan-shaped cam. 11020301020. An expansion compressor apparatus , comprising: an expansion cylinder () , a compression cylinder () , and a connecting shaft () connecting the expansion cylinder () and the compression cylinder () ,{'b': 11', '10', '10', '11', '10, 'an expansion cylinder air suction passage () communicated with an air suction cavity of the expansion cylinder () being provided on the expansion cylinder (), and the expansion cylinder air suction passage () being provided in a radial direction of the expansion cylinder ();'}the expansion compressor apparatus further comprising:{'b': 40', '30', '40', '40', '40', '41', '42', '41', '42', '40', '42', '11, 'a control cylinder (), the connecting shaft () passes through the control cylinder (), and is provided in the control cylinder (), the control cylinder () being provided with a control cylinder air suction passage () and a control cylinder air exhaust passage (), both the control cylinder air suction passage () and the control ...

Vacuum pump for vehicle

A vacuum pump for a vehicle includes: a pump housing having an internal cylindrical space, an inlet for receiving oil to be supplied to the space, and an outlet for discharging the oil from the space; a rotor eccentrically rotating in the internal cylindrical space of the pump housing; a vane rotating along the inner side of the internal cylindrical space of the pump housing; and a valve maintaining a pressure in the internal cylindrical space of the pump housing at less than a predetermined level.

High Suction Pressure Single Screw Compressor with Thrust Balancing Load Using Shaft Seal Pressure and Related Methods

A high suction pressure thrust load balance assembly configured for use with a single screw compressor includes comprises a sealing baffle that is keyed to, so as to be rotatable along with, a main rotor drive shaft of the single screw compressor. The sealing baffle is configured to create a force or load to counteract the axial force of the main rotor drive shaft created during rotation of the main rotor drive shaft using the pressurized oil used to lubricate the mechanical shaft seal of the compressor. 1. A high suction pressure thrust load balance assembly configured for use with a single screw compressor , the high suction pressure thrust load balance assembly comprising a sealing baffle that is keyed to , so as to be rotatable along with , a main rotor drive shaft of the single screw compressor , wherein the sealing baffle is configured to create a force or load to counteract an axial force of the main rotor drive shaft created during rotation of the main rotor drive shaft.2. The high suction pressure thrust load balance assembly of claim 1 , wherein the assembly is positioned in an area between one or more roller bearings and one or more seals.3. The high suction pressure thrust load balance assembly of claim 2 , wherein the single screw compressor comprises one or more shaft bearings and the high suction pressure load balance assembly is structured to aid in preventing an excessive load on the one or more shaft bearings during an operation of the compressor under a high input or suction pressure condition.4. The high suction pressure load balance assembly of claim 3 , wherein the high input or suction pressure condition is greater than or equal to about 300 psi.5. The high suction pressure load balance assembly of claim 4 , wherein the high input or suction pressure condition is from greater than or equal to about 300 psi to about 800 psi.6. The high suction pressure load balance assembly of claim 4 , wherein the high input or suction pressure condition is ...

Compressor Having Sound Isolation Feature

Scroll compressor designs are provided to minimize vibration, sound, and noise transmission. The scroll compressor has a bearing housing, and orbiting and non-orbiting scroll members. The non-orbiting scroll member has a radially extending flanged portion with at least one aperture substantially aligned with the axially extending bore. At least one fastener is disposed within the aperture and the bore. A sound isolation member contacts at least one of the non-orbiting scroll member, the fastener, or the bearing housing, to reduce or eliminate noise transmission. The sound isolation member may be formed of a polymeric composite having an acoustic impedance value greater than the surrounding materials. The sound isolation member may be an annular washer, an O-ring, or a biasing member, by way of non-limiting example. In other variations, fluid passages are provided within the fastener and/or bearing housing to facilitate entry of lubricant oil to further dampen sound and noise. 1. A scroll compressor comprising:a bearing housing including at least one radially extending arm having an axially extending bore;an orbiting scroll member including a first end plate and a first scroll wrap extending from the first end plate;a non-orbiting scroll member including a second end plate, a second scroll wrap extending from the second end plate and meshingly engaged with the first scroll wrap, and a radially extending flanged portion, the radially extending flanged portion including at least one axially extending aperture substantially aligned with the axially extending bore;at least one fastener disposed within the at least one axially extending aperture and the axially extending bore; anda sound isolation member comprising a biasing member operable to bias the non-orbiting scroll member in an axial direction, so as to reduce vibration and sound generated by movement of the non-orbiting scroll member during scroll compressor operation.2. The scroll compressor of claim 1 , wherein ...

Compressor Having Sound Isolation Feature

Scroll compressor designs are provided to minimize vibration, sound, and noise transmission. The scroll compressor has a bearing housing, and orbiting and non-orbiting scroll members. The non-orbiting scroll member has a radially extending flanged portion with at least one aperture substantially aligned with the axially extending bore. At least one fastener is disposed within the aperture and the bore. A sound isolation member contacts at least one of the non-orbiting scroll member, the fastener, or the bearing housing, to reduce or eliminate noise transmission. The sound isolation member may be formed of a polymeric composite having an acoustic impedance value greater than the surrounding materials. The sound isolation member may be an annular washer, an O-ring, or a biasing member, by way of non-limiting example. In other variations, fluid passages are provided within the fastener and/or bearing housing to facilitate entry of lubricant oil to further dampen sound and noise. 1. A scroll compressor comprising:a bearing housing including at least one radially extending arm having an axially extending fastener bore;an orbiting scroll member including a first end plate and a first scroll wrap extending from the first end plate, the orbiting scroll operable to orbit about a first axis;a non-orbiting scroll member including a second end plate, a second scroll wrap extending from the second end plate and meshingly engaged with the first scroll wrap, and a radially extending flanged portion, the radially extending flanged portion having a first surface and a second surface, and including at least one aperture extending axially between the first surface and the second surface, the at least one aperture substantially aligned with the axially extending fastener bore; andat least one fastener disposed within the at least one aperture and the axially extending fastener bore, the at least one fastener having a first passage extending in a direction substantially parallel to the ...

COMPRESSOR

A compressor includes a rotating shaft including an eccentric portion, a motor including a rotor connected to the rotating shaft, a compression mechanism portion driven by the motor via the rotating shaft, a first balance weight provided at one end along an axial direction of the rotor on a side facing the compression mechanism portion, and a second balance weight provided at an other end along the axial direction of the rotor. The first and second balance weights are disposed such that at least either of a center of gravity of the first balance weight or a center of gravity of the second balance weight is positioned at a preset lead angle in a rotation direction of the rotor with respect to a reference plane passing through a rotation center along an eccentric direction of the eccentric portion of the rotating shaft. 1. A compressor comprising:a rotating shaft including an eccentric portion;a motor including a rotor connected to the rotating shaft;a compression mechanism portion driven by the motor via the rotating shaft;a first balance weight provided at one end along an axial direction of the rotor on a side facing the compression mechanism portion; anda second balance weight provided at an other end along the axial direction of the rotor,the first balance weight and the second balance weight being disposed such that at least either of a center of gravity of the first balance weight or a center of gravity of the second balance weight is positioned at a preset lead angle in a rotation direction of the rotor with respect to a reference plane passing through a rotation center along an eccentric direction of the eccentric portion of the rotating shaft.2. The compressor according to claim 1 , whereinthe first balance weight and the second balance weight are disposed such that the center of gravity of the first balance weight and the center of gravity of the second balance weight are positioned at the preset lead angle in the rotation direction of the rotor with ...

COMPRESSOR ELEMENT FOR A SCREW COMPRESSOR AND SCREW COMPRESSOR IN WHICH SUCH A COMPRESSOR ELEMENT IS APPLIED

A compressor element of a screw compressor inlet side and an outlet side and two helical rotors, respectively a male rotor with a drive for the male rotor and a female rotor that is driven by the male rotor by means of synchronisation gearwheels with at least one synchronisation gearwheel on the male rotor, wherein the drive and synchronisation gearwheels of the male rotor are chosen such that, upon being driven with acceleration of the rotors without gas forces, the resulting mechanical drive force that is exerted by this drive and by this synchronisation gearwheel on the male rotor has an axial component that is directed from the outlet side to the inlet side and that the movement of the male rotor in the axial direction from the outlet side to the inlet side is fixed by means of a single axial single-acting or double-acting bearing. 119-. (canceled)20. A compressor element of a screw compressor for compressing gas , with the compressor element comprising a housing with an inlet for the gas on the inlet side , and an outlet for the gas on the outlet side and two rotor chambers in which two helical rotors are mounted on bearings that upon being driven mesh together in order to compress the gas , respectively a male rotor with a drive for the male rotor and a female rotor that is driven by the male rotor by means of synchronisation gearwheels with at least one synchronisation gearwheel on the male rotor and one synchronisation gearwheel on the female rotor , wherein the drive and synchronisation gearwheels of the male rotor are chosen such that , upon being driven with acceleration of the rotors of the compressor element without gas forces , the resulting mechanical drive force that is exerted by this drive and by this synchronisation gearwheel on the male rotor has an axial component that is directed from the outlet side to the inlet side and that the movement of the male rotor in the axial direction from the outlet side to the inlet side is fixed by means of a ...

COMPRESSOR HAVING COUNTERWEIGHT ASSEMBLY

A compressor may include a shell. A compression mechanism may be disposed within the shell. A drive shaft may be disposed within the shell and drivingly engaged with the compression mechanism. A motor assembly may be drivingly engaged with the drive shaft and may include a rotor and a stator. A plurality of magnets may be disposed within the rotor and may cooperate with the stator to create an electromagnetic field between the rotor and the stator. A counterweight assembly may be secured to the drive shaft and configured to dynamically balance the compression mechanism and secure the plurality of magnets within the rotor. 1. A compressor comprising:a shell;a compression mechanism disposed within the shell;a drive shaft disposed within the shell and drivingly engaged with the compression mechanism;a motor assembly drivingly engaged with the drive shaft and including a rotor and a stator;a plurality of magnets being disposed within the rotor and cooperating with the stator to create an electromagnetic field between the rotor and the stator; anda counterweight assembly secured to the drive shaft and configured to dynamically balance the compression mechanism and secure the plurality of magnets within the rotor.2. The compressor of claim 1 , wherein the counterweight assembly further includes at least one counterweight press-fit onto the drive shaft and provides a physical constraint to retain the plurality of magnets within the rotor.3. The compressor of claim 2 , wherein a spacer on the at least one counterweight positions a counterweight mass at a predetermined distance from the plurality of magnets to reduce flux leakage of the motor assembly due to the counterweight.4. The compressor of claim 3 , wherein the spacer includes a plurality of lobes positioned to cover a plurality of bores housing the plurality of magnets in the rotor and retains the plurality of magnets within the plurality of bores.5. The compressor of claim 1 , wherein the counterweight assembly ...

Pressure Balancing System For A Fluid Pump

Several examples of a pressure balancing system for a pump. In one example, the pressure balancing system comprises: a housing; a first rotor within the housing having a first axis of rotation, a first shaft, a first face surface; a second rotor having an axis of rotation, a second face surface adjacent the first face surface of the first rotor; the face of the first rotor, the face of the second rotor, and an inner surface of the housing forming at least one working fluid chamber; an annular ring fitted around a shaft, adjacent a first pressure chamber having a fluid connection through the housing; the annular ring configured to bias the first rotor toward the second rotor when fluid is supplied under pressure to the first pressure chamber; a fluid conduit is configured to convey fluid to a pressure chamber between the housing and the annular ring to bias the annular ring against a radial extension of the first shaft thus biasing the first rotor toward the second rotor.

COMPRESSOR

Disclosed is a compressor having a torque load reducing unit for moving a center of weight to which a gas force is applied. As the torque load reducing unit is formed at an oval-shaped roller, a distance between a rotation center of the roller and an operation point to which a gas force is applied becomes short. This can reduce a torque load to the roller, and can enhance compression efficiency. 1. A compressor , comprising:a driving motor;a rotational shaft configured to transmit a rotational force of the driving motor,a cylinder installed at one side of the driving motor;a roller having an outer circumferential surface contacting an inner circumferential surface of the cylinder on at least two points, rotated by being provided at the rotational shaft, and concentric with the cylinder; andat least two vanes movably provided at the cylinder, contacting an outer circumferential surface of the roller, and configured to divide at least two compression spaces formed by the cylinder and the roller into a suction chamber and a compression chamber,wherein the roller is provided with a torque load reducing unit configured to move a center of weight to which a gas force is applied by the roller, andwherein the torque load reducing unit is formed at two sides of a short-axis direction central line of the roller, the short-axis direction central line perpendicular to a long-axis direction central line of the roller at a rotation center, the long-axis direction center line which connects a plurality of contact points between the outer circumferential surface of the roller and the inner circumferential surface of the cylinder with each other.2. The compressor of claim 1 , wherein the torque load reducing units are formed to be positioned on a long-axis direction central line of the roller at least partially claim 1 , the long-axis direction central line which connects a plurality of contact points between the outer circumferential surface of the roller and the inner ...

SCROLL COMPRESSOR

A scroll compressor includes a housing and a compression mechanism accommodated in the housing. The housing includes a first housing member having an annular partition wall and a second housing member. The partition wall includes a fastened portion that is thicker than other portions in a circumferential direction of the partition wall. The compression mechanism includes a fixed scroll member and an orbiting scroll member. The fixed scroll member includes a fixed spiral wall extending spirally and an outer circumferential wall that surrounds the fixed spiral wall. The outer circumferential wall includes a recess forming portion having a recess recessed inward in the radial direction. The recess is located at a part of the outer circumferential wall opposed to the fastened portion in the radial direction. 1. A scroll compressor comprising:a housing having a suction port and a discharge port; anda compression mechanism accommodated in the housing, wherein the compression mechanism is configured to compress fluid drawn in from the suction port and discharge the fluid out of the discharge port, wherein a first housing member having an annular partition wall, and', 'a second housing member fastened to the first housing member by a fastener, wherein the first housing member and the second housing member internally define a space,, 'the housing includes'}the partition wall includes a fastened portion through which the fastener is inserted, wherein the fastened portion is thicker than other portions in a circumferential direction of the partition wall,the fastened portion protrudes inward in a radial direction in the space, a fixed scroll member accommodated in the space, and', 'an orbiting scroll member accommodated in the space, wherein the orbiting scroll member is engaged with the fixed scroll member to define a compression chamber,, 'the compression mechanism includes'} a fixed spiral wall extending spirally, and', 'an outer circumferential wall that surrounds the ...

SCROLL COMPRESSOR

A scroll compressor includes a balancer that rotates integrally with a rotary shaft. A bushing includes a cylindrical portion and an auxiliary weight portion. The auxiliary weight portion is arranged on the outer side of the cylindrical portion. The fitting hole is provided at a position where a moment about the eccentric shaft generated by a centrifugal force acting on the movable scroll due to rotation of the rotary shaft and a moment about the eccentric shaft generated by a centrifugal force acting on the auxiliary weight portion due to rotation of the rotary shaft are in the opposite directions. As viewed in the axial direction of the rotary shaft, the center of gravity of the bushing is located on the same side of a straight line including the center of the cylindrical portion and the center of the rotary shaft as the center of the eccentric shaft. 1. A scroll compressor comprising:a rotary shaft;an eccentric shaft that is provided at a distal end of the rotary shaft;a stationary scroll that has a stationary-side base plate and a stationary-side volute wall extending from the stationary-side base plate; a disk-shaped movable-side base plate that faces the stationary-side base plate,', 'a movable-side volute wall that extends from the movable-side base plate toward the stationary-side base plate and meshes with the stationary-side volute wall, and', 'a cylindrical boss portion that extends from the movable-side base plate toward the rotary shaft and is arranged about a central axis of the movable-side base plate;, 'a moveable scroll that is configured to compress fluid by rotation of the rotary shaft, the movable scroll including'}a shaft supporting member that has an insertion hole in which the rotary shaft is inserted, a rotary shaft bearing for supporting the rotary shaft being arranged in the insertion hole;a bushing that has a fitting hole in which the eccentric shaft is fitted;a scroll bearing that is fitted to an inner circumferential surface of the boss ...

System and Method for Improved Performance of Gerotor Compressors and Expanders

A system and method are presented for improved performance of gerotor compressors and expanders. Certain aspects of the disclosure reduce porting losses in a gerotor system. Other aspects of the disclosure provide for reduced deflection in lobes of an outer rotor of a gerotor system. Still other aspects of the disclosure provide for reduced leakage through tight gaps between components of a gerotor system. 1. A gerotor system comprising an inner rotor , an outer rotor having a plurality of ports , and a housing , the plurality of ports comprising an inlet subset of ports and an outlet subset of ports , wherein fluid flows into the gerotor system through the inlet subset of ports and out of the gerotor system through the outlet subset of ports ,the housing further comprising an inlet duct fluidly coupled with the inlet subset of ports and an outlet duct fluidly coupled with the outlet subset of ports, the inlet duct comprising an input pipe and the outlet duct comprising an outlet pipe, andwherein the inlet pipe is located on the inlet duct based upon a location of an inlet port in the inlet subset of ports having a highest inlet fluid velocity through the inlet port and the outlet pipe is located on the outlet duct based upon a location of an outlet port in the outlet subset of ports having a highest outlet fluid velocity through the outlet port.2. The gerotor system of claim 1 , wherein one of (a) an axis of the inlet pipe is aligned with a dominant fluid velocity vector through one or more of the inlet ports claim 1 , and (b) an axis of the outlet pipe is aligned with a dominant fluid velocity vector through one or more of the outlet ports.3. The gerotor system of claim 1 , wherein one of (a) a profile of one or more regions of the inlet duct is varied based upon the fluid velocity through one or more corresponding inlet ports claim 1 , and (b) a profile of one or more regions of the outlet duct is varied based upon the fluid velocity through one or more ...

Scroll type compressor

A scroll type compressor includes a housing, a fixed scroll cooperating with the housing to define a discharge chamber, a movable scroll cooperating with the fixed scroll to define a compression chamber, and a shaft support member cooperating with the movable scroll to define a back pressure chamber. Fluid in the compression chamber is supplied to the back pressure chamber. The back pressure chamber and the discharge chamber communicate with each chamber through a relief passage. A check valve is disposed in the relief passage, and the check valve allows the fluid to flow from the back pressure chamber to the discharge chamber, when back pressure of the back pressure chamber is higher than discharge pressure of the discharge chamber.

FUEL PUMP

A fuel pump includes an inner rotor, an outer rotor, a casing, and a housing. The inner rotor includes outward teeth. The outer rotor includes inward teeth geared with the outward teeth. The casing houses the inner rotor and the outer rotor, and forms a variable capacity pump chamber between the inward teeth and the outward teeth. The housing is formed in a cylindrical shape and includes a cylindrical inner portion, the casing being press fit into the cylindrical inner portion. A recessed portion is formed at a predetermined position in a circumferential direction of an outer circumferential surface of the casing, the recessed portion being recessed toward a radial direction center of the outer circumferential surface. 1. A fuel pump , comprising:an inner rotor including outward teeth;an outer rotor including inward teeth, the inward teeth being geared with the outer teeth;a casing that houses the outer rotor and the inner rotor, the casing forming a variable capacity pump chamber between the inward teeth and the outward teeth; anda housing formed in a cylindrical shape including a cylindrical inner portion, the casing being press fit into the cylindrical inner portion, whereina recessed portion is formed at a predetermined position in a circumferential direction of an outer circumferential surface of the casing, the recessed portion being recessed toward a radial direction center of the outer circumferential surface.2. The fuel pump of claim 1 , whereinthe recessed portion is partially formed in a predetermined region in an axial direction of the casing.3. The fuel pump of claim 2 , wherein a press fitting portion which is press fit in the housing, and', 'a guide portion disposed adjacent to the press fitting portion in the axial direction, the guide portion guiding the housing to the press fitting portion during a press fitting operation, and, 'the casing includes'}the predetermined region includes an entire region of the press fitting portion.4. The fuel pump of ...

SCROLL COMPRESSOR WITH REDUCED UPSETTING MOMENT

A scroll compressor includes a pressing mechanism, a pushback mechanism and an adjustment mechanism. The pressing mechanism applies a pressing force toward a fixed scroll to the back side of an end plate portion of an orbiting scroll. The pushback mechanism applies a pushback force separating the orbiting scroll from a fixed scroll to the front of the orbiting scroll. The adjusting mechanism has a low-pressure portion filled with a fluid of a lower pressure than the discharge pressure of the compression mechanism, and a communicating groove formed in a sliding surface of an outer peripheral portion of the fixed scroll so as to communicate with the low-pressure portion in a first rotational angle range in order to reduce an upsetting moment of the orbiting scroll, and to be blocked from the low-pressure portion in a second rotational angle range other than the first rotational angle range. 1. A scroll compressor comprising:a casing; a fixed scroll having an end plate portion, an outer peripheral portion formed on an outer periphery of the end plate portion, and a wrap placed upright inside the outer peripheral portion, and', 'an orbiting scroll having an end plate portion slidably contacting with the outer peripheral portion of the fixed scroll and a front end portion of the wrap of the fixed scroll, and a wrap placed upright on the end plate portion;', 'a pressing mechanism arranged to apply a pressing force toward the fixed scroll to a back side of the end plate portion of the orbiting scroll;', 'a pushback mechanism arranged to apply a pushback force separating the orbiting scroll from the fixed scroll to a front of the end plate portion of the orbiting scroll; and', a low-pressure portion filled with a fluid of lower pressure than a discharge pressure of the compression mechanism, and', to communicate with the low-pressure portion in a first rotational angle range in order to reduce an upsetting moment of the orbiting scroll, and', 'to be blocked from the low- ...

HORIZONTAL COMPRESSOR AND REFRIGERATION CYCLE SYSTEM

According to one embodiment, a horizontal compressor comprises a container accommodating a compression mechanism unit and an electric motor unit, a first leg fixed to the container near the motor unit, a second leg fixed to an end of the container on the compression mechanism unit side, an accumulator between the legs, and a joint port in the container. The second leg includes a first support portion supporting the container in a horizontal attitude, and a second support portion supporting the container standing in a vertical attitude. The first support portion extends in a direction away from the joint port relative to the second support portion. 1. A horizontal compressor comprising:a cylindrical hermetic container;a compression mechanism unit that is housed in the hermetic container to compress a refrigerant;an electric motor unit that is housed in the hermetic container so as to be aligned with the compression mechanism unit in an axial direction of the hermetic container, and drives the compression mechanism unit;a first leg that is fixed to the hermetic container at a position near the electric motor unit to support the hermetic container in a horizontal attitude on an installation surface;a second leg that is fixed to an end of the hermetic container located on the side of the compression mechanism unit to support the hermetic container in a horizontal attitude on the installation surface;an accumulator that is attached to the hermetic container, between the first leg and the second leg; anda joint port that is provided in the hermetic container to join a refrigerant return pipe, the refrigerant return pipe guiding a refrigerant in the accumulator to the compression mechanism unit, whereinthe second leg includes a first support portion of plate shape that faces the installation surface to support the hermetic container in a horizontal attitude, and a second support portion of plate shape that supports the hermetic container standing in a vertical attitude, ...

Scroll fluid machine

An object is to ensure reliable engagement of a pin and an engagement hole (ring) serving as a rotation prevention mechanism in a scroll fluid machine in which a turn radius of an orbiting scroll is constant. A scroll-type compressor (10) according to the present invention is provided with: a fixed scroll (24); an orbiting scroll (22) that revolves with respect to the fixed scroll (24); a main shaft (14) that includes an input shaft (14a) to which a driving force is transmitted, and an eccentric shaft (14c) that is offset by a predetermined amount with respect to the input shaft (14a) and that transmits the driving force to the orbiting scroll (22); and a pin-and-ring mechanism (27) that is provided between the orbiting scroll (22) and a housing (11) and that prevents rotation of the orbiting scroll (22). When a turn radius of the eccentric shaft (14c) of the main shaft (14) is ρs and a turn radius of a pin (27a), which is determined by the pin (27a) and ring (27b), is ρpin, the pin-and-ring mechanism (27) satisfies ρs<ρpin.

DYNAMIC RADIAL COMPLIANCE IN SCROLL COMPRESSORS

In some examples, a scroll compressor may include an orbiting scroll and a fixed scroll having spiral involutes intermeshed together. A slider block may be disposed on the eccentric portion of a main shaft and the slider block may be attached to a compliant counterweight. The counterweight may be supported by a counterweight guide plate that is supported by the main shaft. The counterweight guide plate may also have an arm securing a top portion of the counterweight thereby securing the slider block. In some implementations, a spring assembly may be provided between an outer edge of the counterweight and the counterweight guide plate. These components may, in part, allow for a constant involute contact between the fixed scroll and orbiting scroll involutes at high speeds thereby achieving high compression efficiency. 1. A scroll compressor , comprising:a drive shaft extending along a main axis including a shaft eccentric having a smaller diameter than a diameter of the drive shaft;a slider block disposed on the shaft eccentric;an orbiting scroll disposed on the slider block having a base plate and a spiral wrap extending axially from the orbiting scroll base plate;a fixed scroll having a base plate, a spiral wrap extending axially from the fixed scroll base plate and nested with the spiral wrap of the orbiting scroll;a counterweight having a bore that engages with the slider block;a counterweight guide plate supporting the counterweight and having a bore that engages with the drive shaft,wherein the counterweight includes a first surface perpendicular to the main axis that faces upward, andwherein the counterweight guide plate includes a second surface perpendicular to the main axis and parallel to the first surface and that faces the first surface.2. The scroll compressor of claim 1 ,wherein the counterweight guide plate includes an arm extending upward in an axial direction that includes a radially inward extending portion that extends over a portion of the ...

LOW POWER CONSUMING MODULE FOR A VACUUM PUMP

The present invention provides an improved vacuum pump assembly for a motor vehicle comprising of a housing, a rotor, modified vane, a sealing ring, a cover, wherein, the modified vane containing a vane slider is having at least one oil vent or relief hole or slot, for the reduction of the exit port oil peak pressure, by channelizing oil supplies to the vane top and bottom face, thereby improving the seal-ability between the moving and stationary part of the pump; and the modified vane further having an oil vent control at the exit port, for maintaining oil pressure and reducing the exit port hydraulic pressure, leading to reduction in the opposite end vane slider tip load causing low friction between the pump housing, the vane and vane slider, and further channelizing the excess amount of oil to the vane top face which creates additional sealing between the vane and the housing, reducing the air leakage between the low pressure chamber and high pressure chamber inside the pump. 1. An improved vacuum pump assembly for a motor vehicle comprising of:a. a housing partially or fully enclosing the vacuum pump assembly;b. a rotor;c. a modified vane comprising a top face and a bottom face, a vane slider with at least one oil vent, the modified vane being slidably supported by the rotor in its recess;d. a sealing ring adapted to provide a seal against engine cylinder head; ande. a cover to act as a lid on top of the rotor;wherein,the modified vane containing said vane slider is having at least one oil vent reduces the exit port oil peak pressure;the modified vane further channelizes oil supply to the vane top and bottom face, thereby improving the seal-ability between the moving and stationary parts of the pump; andthe modified vane having an oil vent at the exit port maintains the oil pressure and reduces the exit port hydraulic pressure resulting in low friction.2. The vacuum pump assembly as claimed in the claim 1 , wherein the oil vent is present on the top face of the ...

Compressor Having A Sleeve Guide Assembly

A compressor may include a shell, a bearing housing, an orbiting scroll, and a non-orbiting scroll. The bearing housing is supported within the shell and includes a central body and a plurality of arms. Each arm extends radially outwardly from the central body and has a first aperture. The orbiting scroll is supported on the bearing housing. The non-orbiting scroll is meshingly engaged with the orbiting scroll and includes a plurality of second apertures. Each second aperture receives a plurality of bushings and a fastener. The fastener extends through the bushings and into a corresponding one of the first apertures in the bearing housing to rotatably secure the non-orbiting scroll relative to the bearing housing while allowing relative axial movement between the non-orbiting scroll and the bearing housing. 1. A compressor comprising:a shell;a bearing housing supported within the shell, the bearing housing including a central body and a plurality of arms extending radially outward from the central body, each of the arms having a first aperture;an orbiting scroll supported on the bearing housing; anda non-orbiting scroll meshingly engaged with the orbiting scroll and including a plurality of second apertures, each second aperture receiving a plurality of bushings and a fastener, the fastener extending through the bushings and into a corresponding one of the first apertures in the bearing housing to rotatably secure the non-orbiting scroll relative to the bearing housing while allowing relative axial movement between the non-orbiting scroll and the bearing housing.2. The compressor of claim 1 , wherein one of the plurality of bushings inside each second aperture extends axially out of the second aperture and abuts a corresponding arm of the bearing housing.3. The compressor of claim 2 , wherein another one of the plurality of bushings inside each second aperture extends axially out of the second aperture and axially separates a head of the fastener from a flange of ...

Screw Compressor with Oil Shutoff and Method

In a screw compressor ( 20 ), a male rotor suction end bearing ( 96 ) and discharge end bearing ( 90 1, 90 2, 90 3 ) mount the male rotor suction end shaft portion ( 39 ) and discharge end shaft portion ( 40 ). A female rotor suction end bearing ( 98 ) and discharge end bearing ( 92 1, 92 2 ) mount the female rotor suction end shaft portion ( 41 ) and discharge end shaft portion ( 42 ). At least one valve ( 182; 282; 382 1,382 2,382 3; 82; 582 - 1,582 - 2; 682 - 1,682 - 2; 782 - 1,782 - 2 ) is along a lubricant flowpath and has an energized condition and a de-energized condition. At least one restriction ( 184; 84 - 1,84 - 2; 84 - 1, 84 - 2,84 - 3; 484 1,484 - 2,84 - 3; 84 1,84 2,584; 84 - 1,84 - 2,684; 84 - 1,84 - 2,784 ) is along the lubricant flowpath. The at least one valve and the at least one restriction are positioned to create a lubricant pressure difference biasing the rotors away from a discharge end of the case.

Compressor

In order to optimise a compressor, including a compressor housing, a scroll compressor unit that is arranged in the compressor housing and has a first compressor body and a second compressor body that is movable in relation to the first compressor body, an axial guide that supports the movable compressor body to prevent movements in the direction parallel to the centre axis of the stationary compressor body and, in the event of movements, guides it in the direction transverse to the centre axis, parallel to a plane perpendicular to the centre axis, an eccentric drive for the scroll compressor unit, wherein the eccentric drive has an entrainer that is driven by the drive motor, that revolves on a path about the centre axis and that, for its part, cooperates rotatably with an entrainer receptacle in the second compressor body, and a coupling that prevents the second compressor body from rotating freely, it is proposed that the axial guide should have a carrier element, which serves as a base for supporting a compressor body base, which carries the scroll vane, of the second compressor body against an axial support face, that the axial support face should be arranged radially outward of the entrainer, and that the coupling that prevents free rotation should have at least two coupling element sets that, for their part, include at least two coupling elements, and that the coupling element sets should be arranged radially outward of the axial support face. 1. A compressor , includinga compressor housing,a scroll compressor unit that is arranged in the compressor housing and has a first, stationary compressor body and a second compressor body that is movable in relation to the stationary compressor body, whereof first and second scroll vanes, in the shape of a circle involute, engage in one another to form compressor chambers when the second compressor body is moved in relation to the first compressor body on an orbital path running around a centre axis of the stationary ...

SCROLL COMPRESSOR

A scroll compressor includes a bush having a shaft part and a balance weight part. The shaft part is disposed between an orbiting bearing that supports an orbiting scroll, and an eccentric pin of a crankshaft. The balance weight part is secured to the outer periphery of the shaft part by shrink-fitting. The shaft part includes: a cylindrical body part which is fitted into the orbiting bearing, and into which the eccentric pin of the crankshaft is inserted; and a cylindrical coupling part which extends outward from an axial end portion of the body part, and to which the balance weight part is joined. The bush satisfies the following requirements: 1. A scroll compressor comprising:a compression unit including a stationary scroll and an orbiting scroll that are combined to define a compression chamber, the orbiting scroll being driven to compress a fluid in the compression chamber;a crankshaft configured to drive the orbiting scroll, the crankshaft having an eccentric pin configured to impart a rotational force to the orbiting scroll;an orbiting bearing configured to support the orbiting scroll; anda bush having a shaft part disposed between the orbiting bearing and the eccentric pin of the crankshaft, and a balance weight part secured to an outer periphery of the shaft part,wherein the shaft part includes a cylindrical body part fitted into the orbiting bearing and into which the eccentric pin of the crankshaft is inserted, and a cylindrical coupling part extending outward from an end portion in an axial direction of the body part and to which the balance weight part is joined, [{'br': None, 'i': D', 'D, '1.2≤2/1≤1.6, and\u2003\u2003(a)'}, {'br': None, 'i': D', 'D', 'D', 'D', 'E', 'E, '1.0≤(2−3)/(4−2)×1/2≤3.5,\u2003\u2003(b)'}, 'where', {'b': '1', 'D is an outer diameter of the body part,'}, {'b': '2', 'D is an outer diameter of the coupling part,'}, {'b': '3', 'D is an inner diameter of the body part,'}, {'b': '4', 'D is an outer diameter of the balance weight part ...

Screw Compressor and Air Conditioning Unit

The present disclosure discloses a screw compressor and an air-conditioning unit, and relates to the field of compressors. The screw compressor has a first pressure level rotor assembly, a second pressure level rotor assembly and a body. The first pressure level rotor assembly has a first pressure level male rotor and a first pressure level female rotor; the second pressure level rotor assembly has a second pressure level male rotor and a second pressure level female rotor. Wherein, the first pressure level rotor assembly and the second pressure level rotor assembly are configured to enable an axial force received by the first pressure level rotor assembly and exerted by a compressed gas opposite to an axial force received by the second pressure level rotor assembly and exerted by a compressed gas. The force received during the operational process of the screw compressor is more balanced. 1. A screw compressor , comprising:a first pressure level rotor assembly comprising a first pressure level male rotor and a first pressure level female rotor that mesh with each other;a second pressure level rotor assembly comprising a second pressure level male rotor and a second pressure level female rotor that mesh with each other; anda body in which the first pressure level rotor assembly and the second pressure level rotor assembly are arranged;wherein the first pressure level rotor assembly and the second pressure level rotor assembly are configured to enable an axial force received by the first pressure level rotor assembly and exerted by a compressed gas in the first pressure level rotor assembly opposite to an axial force received by the second pressure level rotor assembly and exerted by a compressed gas therein.2. The screw compressor according to claim 1 , wherein the first pressure level male rotor and the second pressure level male rotor are coaxially arranged.3. The screw compressor according to claim 1 , further comprising:a motor disposed between the first pressure ...

SCROLL COMPRESSOR WITH ECONOMIZER INJECTION

A scroll compressor includes a compressor housing, an orbiting scroll member, a non-orbiting scroll member, an economizer injection inlet, and a discharge outlet. The orbiting scroll member and the non-orbiting scroll member are disposed within the compressor housing. The orbiting scroll member and the non-orbiting scroll member are intermeshed thereby forming a compression chamber within the compressor housing. The non-orbiting scroll includes a plurality of compression inlet ports. An economizer injection inlet is formed through the compressor housing and in fluid communication with the compression chamber via the compression inlet ports. The economizer injection inlet is disposed between the non-orbiting scroll member and the compressor housing. The discharge outlet is in fluid communication with the compression chamber. 1. A scroll compressor , comprising:a compressor housing;an orbiting scroll member disposed within the compressor housing;a non-orbiting scroll member disposed within the compressor housing, wherein the orbiting scroll member and the non-orbiting scroll member are intermeshed thereby forming a compression chamber within the compressor housing, the non-orbiting scroll including a plurality of compression inlet ports;an economizer injection inlet formed through the compressor housing and in fluid communication with the compression chamber via the compression inlet ports; anda discharge outlet in fluid communication with the compression chamber.2. The compressor of claim 1 , further comprising an intermediate pressure chamber formed in the compressor housing between the non-orbiting scroll member and the compressor housing.3. The compressor of claim 2 , wherein the intermediate pressure chamber is fluidly connected to the economizer injection inlet and the compression inlet ports.4. The compressor of claim 1 , wherein the compression inlet ports are in fluid communication with the compression chamber at a location wherein the working fluid being ...

Thrust Plate For Reducing Contact Stress In A Scroll Compressor

A thrust plate for use in a scroll compressor is described. The thrust plate comprises a disk-shaped body defining a plane and having a first side and a second side, wherein the second side opposes the first side, at least one protrusion extending from the first side, and at least one recess located at the second side, wherein the at least one protrusion and the at least one recess overlap at least partially in a direction perpendicular to the plane. Further, a system is described, wherein the system comprises a thrust plate with at least one protrusion and an orbiting scroll plate with at least one recess, wherein the at least one protrusion and the at least one recess overlap. Also, a scroll compressor having either a corresponding thrust plate or a corresponding system is described. 1. A thrust plate for use in a scroll compressor , the thrust plate comprising:a disk-shaped body defining a plane and having a first side and a second side, wherein the second side opposes the first side;at least one protrusion extending from the first side; andat least one recess located at the second side;wherein the at least one protrusion and the at least one recess overlap at least partially in a direction perpendicular to the plane.2. The thrust plate according to claim 1 , wherein the disk-shaped body comprises a plurality of holes claim 1 , which extend from a surface of the first side to a surface of the second side and which are configured to receive pins of an Oldham coupling.3. The thrust plate according to claim 1 , wherein the disk-shaped body comprises an aperture claim 1 , which extends from a surface of the first side to a surface of the second side and which is configured to receive a portion of a crankshaft and/or a portion of an orbiting scroll plate.4. The thrust plate according to claim 1 , wherein the at least one recess is located at a surface of the second side.5. The thrust plate according to claim 1 , wherein the at least one recess is located beneath a ...

Rotary screw compressor

FIELD: compression of natural gas in gas and oil fields; gas supply systems, gas charging and gas lift stations for production of gas and oil; gas and oil transportation; oil refining and chemical plants; power plants. SUBSTANCE: rotary screw compressor includes housing, drive and driven rotors located in working space. Housing is provided with exhaust hole at high-pressure side and suction hole at low-pressure side. At least one rotor is secured for rotation at low-pressure side by means of bearing device which includes load-bearing bracket fixed in end plate. Load-bearing bracket has cylindrical outer circular surface and extends into cavity located in rotor forming first chamber between bracket and rotor. Bracket is provided with passage for supply of oil to first chamber. Circular surface of load-bearing bracket is provided with groove connected with oil supply passage and recess connected with oil drain passage in load-bearing bracket. Sealing devices are provided between first chamber and working space. EFFECT: enhanced efficiency. 13 cl, 8 dwg сб О0тс ПЧ ГЭ РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК ВИ” 2107 192‘ 13) Сл Е 04 С 18/16 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 96102602/06, 13.07.1993 (46) Дата публикации: 20.03.1998 (56) Ссылки: УР, патент, А-59-168290, кл. Е 04 С 18/16, 1984. (86) Заявка РСТ: МЕ 93/00150 (13.07.93) (71) Заявитель: Томассен Интернэшнл Б.В. (МЕ) (72) Изобретатель: Мирзоев Тимур Бердиевич[К У], Галеев Ахмет Мухетдинович[КУ], Максимов Валерий Архипович[КУ], Сосков Сергей Николаевич[КУ], Ишмуратов Рустам Ризаевич[КУ], Абайдуллин Альферед Ибрагимович[КО] (73) Патентообладатель: Томассен Интернэшнл Б.В. (М) (54) РОТАЦИОННЫЙ ВИНТОВОЙ КОМПРЕССОР (57) Реферат: Использование: для сжатия природного газа на газовых и нефтяных месторождениях, В системах газоснабжения, на газозаправочных и газолифтных станциях для производства газа и нефти, при газонефтяных перевозках, на ...

A compressor

본 발명은 일측에 냉매가 토출되는 배출부를 구비하고, 오일이 저유되는 공간을 제공하는 케이스, 상기 케이스의 내주면에 결합되고 코일이 권선되어 회전자기장을 발생시키는 고정자와, 상기 고정자에 수용되어 상기 회전자기장에 의해 회전하는 회전자를 포함하는 구동부, 상기 회전자에 결합되어 연장되는 회전축, 상기 회전축에 결합되어 상기 오일로 윤활되고 상기 냉매를 압축하여 배출하는 압축부, 상기 구동부와 상기 압축부 사이에 구비되어 상기 압축부에서 토출된 상기 냉매 또는 오일이 상기 고정자 또는 상기 압축부의 외곽으로 유출되는 것을 방지하는 실링부를 포함하는 압축기에 관한 것이다. The present invention is provided with a discharge portion on which a refrigerant is discharged on one side, a case that provides a space where oil is stored, a stator coupled to an inner circumferential surface of the case and wound with a coil to generate a magnetic field, and accommodated in the stator to rotate A driving unit including a rotor rotating by a magnetic field, a rotating shaft coupled to and extending from the rotor, a compression unit coupled to the rotating shaft, lubricated with the oil and compressing and discharging the refrigerant, between the driving unit and the compression unit The present invention relates to a compressor including a sealing unit provided to prevent the refrigerant or oil discharged from the compression unit from flowing out of the stator or the compression unit.

Sealing device of oil-injection Screw Compressor

According to the present invention, a screw compressor comprises: a housing having a compression chamber formed therein; a male and female rotor installed in the compression chamber; a drive shaft rotating the male and female rotor; and a seal cover installed across the drive shaft. The screw compressor more comprises: an oil chamber provided in the seal cover to enable oil leaking to the drive shaft to return to the compression chamber; and a breather injecting outdoor air into the oil chamber. Accordingly, the breather is provided in an upper portion of the oil chamber, and an oil collection line is placed in a lower portion to provide difference of pressure of the upper and lower portions. Therefore, a flow of the oil leaking to the drive shaft can smoothly return to the oil collection line.

流体压缩机

流体压缩机有与筒体偏置的圆柱形回转体上有渐变螺距的螺旋状槽，活动地嵌在该槽中的螺旋状叶片将筒体与回转体间的空间分成多个工作室，使筒体与回转体相对回转、将从筒体吸入侧到工作室的被压缩流体一面向筒体输出侧的工作室逐渐输送一面进行压缩，在支持筒体和回转体两端部的两个轴承构件中由回转体端面分别隔出二轴承封闭空间，在吸入侧轴承内封闭空间中引入输出压的被压缩流体，在输出侧轴承内封闭空间中引入吸入压的被压缩流体。

Rotary compressor

본 발명은 로터리 압축기에 관한 것이다. 본 발명에 의한 로터리 압축기는, 베인챔버에 연결되는 연결구멍의 규격을 명확하게 하여 그 연결구멍에 연결튜브를 압입할 때 실린더가 변형되는 것을 방지함으로써, 상기 실린더와 베어링 사이에 틈새가 발생되는 것을 막고 이를 통해 상기 베인챔버 또는 압축공간에서 냉매가 누설되지 않도록 하여 압축기 성능을 향상시킬 수 있다. The present invention relates to a rotary compressor. The rotary compressor according to the present invention is characterized in that a clearance between the cylinder and the bearing is generated by preventing the cylinder from being deformed when the connecting tube is inserted into the connecting hole by clarifying the size of the connecting hole connected to the vane chamber Thereby preventing the refrigerant from leaking through the vane chamber or the compression space, thereby improving the performance of the compressor. 롤링피스톤, 베인챔버, 연결구멍, 연결튜브, 변형 Rolling piston, vane chamber, connecting hole, connecting tube, deformation

Scroll compressor

본 발명은 선회 스크롤 및 고정 스크롤의 경판 미끄럼 이동면에서의 누설에 수반하는 손실을 저감하는 것을 과제로 하는 것이다. This invention makes it a subject to reduce the loss accompanying a leak in the hard plate sliding surface of a turning scroll and a fixed scroll. 고정 스크롤 또는 선회 스크롤의 경판면에 배압 도입 공간을 마련하고, 경판면 상의 누설이 큰 영역에서의 압박력을 증대하여 누설 손실을 저감한다. A back pressure introduction space is provided on the hard plate surface of the fixed scroll or the revolving scroll, and the pressure loss in the large leakage area on the hard plate surface is increased to reduce the leakage loss. 고정 스크롤, 선회 스크롤, 흡입실, 압축실, 흡입 포트 Fixed Scroll, Swivel Scroll, Suction Chamber, Compression Chamber, Suction Port

Compressor element for screw compressor (embodiments) and screw compressor

FIELD: machine building. SUBSTANCE: group of inventions relates to compressor element of screw compressor. Compressor element (2) comprises housing (4) with inlet and outlet holes at inlet and outlet sides (9, 11) respectively and two rotor chambers (5), in which driving rotor (6) with drive and driven rotor (7) are installed, driven by rotor (6) by means of synchronizing gears (24 and 25). At least one wheel (24) is located on rotor (6) and one wheel (25) is located on rotor (7). Drive and wheels (24) are selected so that at actuation with acceleration of rotors (6 and 7) without forces acting on gas side, resultant mechanical drive force, which is applied by means of drive and wheel (24) to rotor (6), comprises axial component directed from side (11) to side (9). Rotor (6) is fixed against movement in axial direction (X-X') from side (11) to side (9) by means of axial bearing (16). Rotor (6) drive is located on side (9). Wheels (24 and 25) are located on side (11), and bearing (16) is located on side (11). Rotor (6) is installed by means of two radial bearings (14, 15). Bearings (14, 15) are located on sides (9, 11) respectively. EFFECT: group of inventions is aimed at synchronization of rotors. 16 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 697 017 C2 (51) МПК F04C 18/16 (2006.01) F04C 29/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F04C 18/16 (2018.08); F04C 29/005 (2018.08) (21)(22) Заявка: 2017139839, 12.04.2016 (24) Дата начала отсчета срока действия патента: Дата регистрации: (73) Патентообладатель(и): АТЛАС КОПКО ЭРПАУЭР, НАМЛОЗЕ ВЕННОТСХАП (BE) 08.08.2019 17.04.2015 BE 2015/05250 (43) Дата публикации заявки: 17.05.2019 Бюл. № 14 (56) Список документов, цитированных в отчете о поиске: DE 3810505 A1, 19.10.1989. US 2002/ 037229 A1, 28.03.2002. EP 0666422 A1, 09.08.1995. RU 2529759 C1, 27.09.2014. (45) Опубликовано: 08.08.2019 Бюл. № 22 (85) Дата начала рассмотрения заявки PCT на ...

Double-stage enclosed compressor

본 발명은 2단 압축용 밀폐형 압축기에 관한 것으로, 본 발명은 두 쌍의 흡입구 및 토출구가 모두 연통되도록 내부공간을 갖는 실린더와, 상기 실린더에 관통되어 케이싱내 회전자와 함께 회전하는 회전축과, 상기 회전축에 일체로 구비되어 실린더의 내부공간을 한 쌍씩의 흡입구와 토출구를 갖는 제1 공간과 제2 공간으로 구분하되 양쪽에 캠면을 갖는 구획판과, 상기 구획판의 양쪽 캠면에 각각 접촉되어 그 각각의 캠면을 따라 서로 반대쪽으로 왕복운동을 하면서 두 공간을 각각 흡입영역과 압축영역으로 전환 가능하게 구분하는 제1 베인 및 제2 베인으로 구성하되, 상기 제1 공간의 흡입구는 케이싱의 흡입관에 연통시키는 반면 토출구는 그 제1 공간에서 1차 압축된 유체를 제2 공간으로 유도하도록 제2 공간의 흡입구와 연통시키며, 상기 제2 공간의 토출구는 케이싱의 내부공간으로 연통시킴으로써, 상기 실린더의 내부공간으로 유입되는 유체를 2단 압축시키게 되어 고압축비를 요구하는 공조용 냉동사이클에 적합하게 되는 것은 물론 하나의 압축기구부에서 유체를 2차 압축시킬 수 있어 전동기구부의 부하 및 부품수 그리고 압축기 체적을 최소한으로 유지할 수 있고, 상기 압축기를 입형으로 하는 경우 하측공간이 상대적으로 고압이 되면서 회전축을 지지하게 되어 축하중이 감소됨에 따라 압축기의 입력이 저감되면서 압축기 효율이 향상된다. The present invention relates to a two-stage compression hermetic compressor, the present invention is a cylinder having an inner space so that both the pair of the inlet and discharge port, and a rotating shaft that passes through the cylinder and rotates with the rotor in the casing, It is provided integrally with the rotating shaft to divide the inner space of the cylinder into a first space and a second space having a pair of inlets and outlets, the partition plate having a cam surface on both sides and the cam surface of both sides of the partition plate, respectively, A first vane and a second vane are configured to reciprocate to the opposite side along the cam surface of the two spaces so as to be switchable into the suction zone and the compression zone, respectively, and the suction port of the first space communicates with the suction pipe of the casing. On the other hand, the discharge port communicates with the suction port of the second space to guide the first compressed fluid in the first space to the second space. The discharge port communicates with the inner space of the casing, thereby compressing the fluid flowing into the inner space of the cylinder in two stages, making it suitable for an air conditioning refrigeration cycle requiring a high compression ratio, as well as the ...

compressor

본 발명은 압축기에 관한 것이다. 본 발명은 케이스와, 상기 케이스 내에 제공되면서 회전축을 동작시키는 전동부 및 압축부를 포함한다. 이때, 상기 전동부와 상기 압축부 사이에는 유로가이드(60)가 설치되어 냉매 유로와 오일 유로를 분리하는데, 상기 유로가이드(60)는 서로 이격된 제1구획벽(63) 및 제2구획벽(64)을 가진다. 그리고 상기 유로가이드(60)에는 상기 유로가이드(60)의 원주방향을 따라 적어도 일부구간에서 제1구획벽(63) 및 제2구획벽(64) 사이의 가이드공간(S)을 상기 케이스(10)의 내면 방향으로 개방시키는 오일배출부(66)가 형성된다. The present invention relates to a compressor. The present invention includes a case, a transmission unit and a compression unit for operating the rotating shaft while being provided in the case. At this time, a flow path guide 60 is installed between the transmission unit and the compression unit to separate the refrigerant flow path and the oil flow path, and the flow path guide 60 includes a first partition wall 63 and a second partition wall spaced apart from each other. (64). And the guide space (S) between the first partition wall (63) and the second partition wall (64) in at least a partial section along the circumferential direction of the flow guide (60) in the case (10) ) is formed with an oil discharge part 66 that is opened toward the inner surface.

Compressor element for screw compressor and screw compressor in which such compressor element is utilized

燃料ポンプ

Discharge structure of scroll compressor

본 발명은 스크롤 압축기의 토출 구조에 관한 것으로, 본 발명은 나선형의 랩이 형성되고 흡입구와 토출구를 가지는 고정스크롤과, 상기 고정스크롤의 랩에 치합하여 상호 협조적으로 압축포켓을 형성할 수 있도록 랩이 형성되어 있으며 상기 압축포켓에서 토출되는 냉매가스의 유동저항을 저감시킬 수 있도록 중앙에 딤플이 형성된 선회 스크롤을 포함하는 스크롤 압축기에 있어서, 상기 선회스크롤의 딤플부 주연부와 고정스크롤의 토출구 주연부에 각각 챔퍼 또는 라운드진 토출 안내면을 구성함으로써, 스크롤 압축기의 내부에서 구동시 발생하는 유체의 유동 저항을 감소시키게 되어 고온의 가스를 외부로 토출시킬 때 흐르는 가스의 유속을 빠르게 향상시켜 토출가스의 압력 저하를 효과적으로 막아 압축기의 성능을 높일 수 있다. The present invention relates to a discharge structure of a scroll compressor, and the present invention relates to a fixed scroll having a spiral wrap and having a suction port and a discharge port, and a wrap so as to cooperate with the wrap of the fixed scroll to form a compression pocket. The scroll compressor includes a swing scroll having a dimple formed in the center to reduce the flow resistance of the refrigerant gas discharged from the compression pocket, each of which is chamfered at the periphery of the dimple portion of the swing scroll and the discharge port peripheral portion of the fixed scroll. Or by forming a rounded discharge guide surface to reduce the flow resistance of the fluid generated when the drive inside the scroll compressor to quickly improve the flow rate of the gas flowing when discharging the hot gas to the outside to effectively reduce the pressure of the discharge gas It can prevent the compressor performance.

Screw compressor with balanced thrust

一种螺旋式压缩机的轴部承受轴向负荷以抵消螺旋转子的推力负荷,该负荷系由于流体被压缩以及趋向于使螺旋转子从排出口向吸入口运动而在螺旋转子上施加的作用力。这样就可允许取消推力轴承。较理想,转子的轮叶的排出端被削斜或倒角以便在工作过程中产生一个流体动力油膜。

Scroll compressor

Screw compressor for high capacities of drive

FIELD: engines and pumps. ^ SUBSTANCE: compressor includes two rotors, drive rotor 2 mainly with convex profile and with four, five or six teeth, and driven rotor 3 with six or seven teeth. Rotor 2 has end of drive shaft 5. Rotors 2 and 3 are enclosed in sections of the housing, suction section, section of rotors and delivery section. Ratio of profile parts length of rotors 2 and 3 to distance between axes of rotors 2 and 3, which determines the load on bearings 10, is decreased by shortening the profile parts of both rotors 2 and 3. At the suction with joint to working chamber in section of rotors 2 and 3 there rigidly located is intermediate plate 7 having parts of suction channel 4 and non-contact sealing the end surface of pair of rotors 2 and 3 and filling the space formed due to shortening of profile parts of rotors 2 and 3. ^ EFFECT: sufficient service life required for industrial application. ^ 5 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 435 985 (13) C2 (51) МПК F04C 18/16 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ Приоритет(ы): (30) Конвенционный приоритет: 10.05.2006 DE 102006021704.7 (73) Патентообладатель(и): Грассо ГмбХ Рефригератион Технолоджи (DE) (43) Дата публикации заявки: 10.11.2008 Бюл. № 31 2 4 3 5 9 8 5 (45) Опубликовано: 10.12.2011 Бюл. № 34 Адрес для переписки: 111250, Москва, ул. Авиамоторная, 53, ЗАО "Патентный Поверенный", пат.пов. Г.Н.Андрущак R U 2 4 3 5 9 8 5 (54) ВИНТОВОЙ КОМПРЕССОР ДЛЯ БОЛЬШИХ МОЩНОСТЕЙ ПРИВОДА на подшипники 10, уменьшено путем укорачивания профильных частей обоих роторов 2 и 3. На всасывании с примыканием к рабочей камере в секции роторов 2 и 3 неподвижно расположена промежуточная плита 7, имеющая части канала всасывания 4 и бесконтактно уплотняющая торцовую поверхность пары роторов 2 и 3 и заполняющая пространство, образованное в связи с укорачиванием профильных частей роторов 2 и 3. Изобретение направлено на достижение достаточного срока службы, ...