Abstract: A machining method for forming an opening through a workpiece, serving as a green compact, by moving a milling tool in a radial direction relative to the workpiece is provided. The milling tool includes a first milling tool and a second milling tool. The method includes a pre-machining step of using the first milling tool, and forming the first sidewall surface by rotating the first milling tool so as to cause cutting edges of the first milling tool to cut the workpiece from the acute angle corner to the obtuse angle corner, while leaving a cutting allowance on the second sidewall surface; and a post-machining step of using the second milling tool whose cutting edges are reversed from the cutting edges of the first milling tool, and forming the second sidewall surface by rotating the second milling tool so as to cause the cutting edges of the second milling tool to cut the cutting allowance from the acute angle corner to the obtuse angle corner.

Abstract: A compressor comprises a housing including a first opening to form a receiving space and a retaining wall, wherein the receiving space is divided, by the retaining wall, a low-pressure chamber and a controller chamber. A compressing mechanism further comprises a fixed scroll plate including a low-pressure side of scroll wraps and a high-pressure side, opposite to the scroll wraps; an orbiting scroll plate, located in the receiving space, including a side, facing the scroll wraps of the fixed scroll plate, of scroll wraps and a compression chamber is formed by the scroll wraps of the fixed scroll plate and the scroll wraps of the orbiting scroll plate; an electrical machinery mechanism, located in the low-pressure chamber, including a rotor and a stator, wherein the electrical machinery mechanism drives the compressing mechanism to rotates to compress refrigerant in the compression chamber.

Abstract: A scroll compressor is disclosed. The compressor includes an enclosure including a compression mechanism that compresses a working fluid. A discharge port discharges a compressed working fluid. A discharge plenum receives the compressed working fluid from the discharge port. A pulsation absorber is disposed within the discharge plenum, the pulsation absorber dividing the discharge plenum into a plurality of volumes.

Abstract: A method for manufacturing a compressor scroll that appropriately impinges cavitation bubbles on target regions of a scroll. The method includes the step of water jet peening by jetting cavitation bubbles generated underwater by a water jet at a first side of an end plate (13A) of the scroll (13), with a center (P1, P2, P3) of the cavitation bubbles being offset from a center (O) of the spiral shape of a wall portion (13B) on the end plate (13A) and the step portion (13Aa) and the stepped portion (13Ba) positioned at an outer peripheral portion of the cavitation bubbles (C).

Abstract: A scroll compressor is provided that may include a casing having a sealed inner space; a drive motor provided in the inner space of the casing to generate a rotational force; a rotational shaft rotatably coupled to the drive motor; an orbiting scroll formed of an aluminum material, and coupled to the rotational shaft to perform an orbiting movement; a fixed scroll coupled to the orbiting scroll to form a compression space; and an Oldham ring coupled to the orbiting scroll, and formed of a sintered metal. With this structure, it may be possible to prevent the Oldham ring from being worn out due to contact with the orbiting scroll. Further, a weight loss portion or wear-resistant coating layer may be formed on a portion of the Oldham ring, thereby suppressing or preventing vibration noise of the scroll compressor from being increased due to a weight increase of the Oldham ring.

Abstract: A scroll compressor of the present invention includes a first discharge port 35 which is in communication with a compression chamber 50, a discharge space 30H which is in communication with the first discharge port 35, a second discharge port 21 which brings the discharge space 30H into communication with a high pressure space 11, a discharge check valve 131 capable of closing the second discharge port 21, a bypass port 36 which brings the compression chamber 50 into communication with the discharge space 30H, and a bypass check valve 121 capable of closing the bypass port 36, the fixed scroll 30 can move in an axial direction of the fixed scroll between the partition plate 20 and the main bearing 60, a high pressure is applied to the discharge space 30H and according to this, the fixed scroll 30 can be pressed against the orbiting scroll 40.

Abstract: A fixed scroll compressor body includes a scroll compressor body casting. The casting has a central body portion having a plate-like base with a spiral scroll rib projecting from the base at a right angle thereto. The spiral scroll rib includes a volume between the spiraled ribs for the compressing of refrigerant. The spiral scroll rib spirals from a central region of the plate-like base to an outer wall of the central body portion. The casting further includes a first inward-protruding portion that protrudes from the outer wall into the volume. A distance that the first inward-protruding portion protrudes into the volume is greater than a thickness of the first inward-protruding portion such that removal of the first inward-protruding portion results in a first intake opening in the outer wall. The first intake opening provides a path for a flow of refrigerant into the volume.

Abstract: A pump assembly for supplying negative pressure to a pneumatic brake booster, wherein the pump assembly has at least two elastic displacement elements which are moved by connecting rods, the connecting rods each being rotatably mounted on an eccentric element. The eccentric element has a bearing seat element and a force element. At least two eccentric elements are secured next to each other on a drive shaft that rotates about an axis of rotation and an interlocking anti-rotation device is provided that determines a defined angular position of the eccentric elements relative to each other about the axis of rotation. In order to improve the ease of assembly and simplify the manufacturability, the anti-rotation device is designed as shaped elements of the bearing seat element in such a way that they engage in each other in an interlocking manner when the eccentric elements are in a defined angular position relative to each other.

Abstract: A tubing pump apparatus is provided. In the tubing pump apparatus, bearing members are integrally formed through engagement, whereby a first shaft of a support plate is rotatably supported by a first bearing portion of one bearing member, and a second shaft of the support plate is rotatably supported by a second bearing portion of another bearing member arranged side by side with the bearing member. By further adding a bearing member, the first shaft of the support plate provided adjacent thereto is rotatably supported by the first bearing portion of the bearing member, and the second shaft is rotatably supported by a second bearing portion of the other bearing member. In this construction, it is possible to arrange side by side a plurality of tubing pumps in the axial direction of the support plates so that it is possible to achieve a reduction in the size of the whole.

Abstract: In a stepped scroll compressor, inclined surfaces (28, 29) of which heights are gradually reduced toward stepped portions are formed in a range W of at least 2? to 3? (here, ? denotes a turning radius of a turning scroll) at (1) any one or both of inner peripheral end portions of high top lands (14H, 15H) of both scrolls and inner peripheral end portions of low bottom lands (14J, 15J) of the opposite scrolls corresponding to the inner peripheral end portions and (2) any one or both of outer peripheral end portions of high bottom lands (14K, 15K) of both the scrolls and outer peripheral end portions of low top lands (14I, 15I) of the opposite scrolls corresponding to the outer peripheral end portions, on the stepped portions (14F, 15F and 14G, 15G) of the top and bottom lands.

Abstract: A mold for forging a scroll rotor capable of controlling material flow speed by adjusting a land section, a molding device applying same, and a method for manufacturing the mold. In the mold, a die includes an extrusion unit having a molding space therein and a spiral-shaped extrusion passage provided in the lower portion thereof so as to correspond to a wrap portion disposed in the scroll rotor. A punch is connected to the die to be in close contact with the inner circumference of the molding space and to be able to slide up and down. The lower portion has a shape corresponding to the upper surface of the flange portion of the scroll rotor and a boss portion. The extrusion passage has a land section in direct contact with the extrusion material. The height of a land of the land section varies along the spiral direction.

Abstract: A noise tone occurring at a blade passing frequency in a blower for an automotive HVAC system is suppressed. The blower includes a centrifugal fan and a scroll body disposed around the fan. An outlet extends from the scroll body to conduct an air flow from a cutoff point of the scroll body. An inlet is coupled to the scroll body defining an inlet throat comprising an arcuate ring extending between a base and an annular end coaxially disposed over the fan. A partial-perimeter wall extends upstream from the arcuate ring having a height between about 4% and about 6.5% of an inner diameter of the annular end. The wall spans a perimeter portion of the circumference of the throat between about 120° and about 180°. As a result, noise at the blade passing frequency is suppressed without any significant reduction in air flow.

Abstract: A pump apparatus includes: a stationary shaft; a rotation-regulating member having a coil main body wound around the stationary shaft, the rotation-regulating member being permitted to rotate in a direction of loosening the coil main body and the rotation-regulating member being restrained from rotating in a direction of tightening the coil main body; a driven rotatable member that may rotate around the stationary shaft when a driving force of a driving source is transmitted; and a suction pump that has a rotary member driven together with rotation of the driven rotatable member and that performs a suction operation when the rotary member rotates. The suction pump is configured such that the rotation-regulating member rotates in the tightening direction of the coil main body when the driven rotatable member rotates in a direction opposite to a direction in which the driven rotatable member performs the suction operation.

Abstract: A mobile sample collection system including housing enclosing a main influent peristaltic pump operatively connected to a main tubing line; a continuous flow centrifuge (CFC) operatively connected to the main tubing line, the CFC comprising a centrifuge bowl; and an elutriate collection tank receiving elutriate from the CFC. The main influent peristaltic pump is configured to continuously pump fluids from a liquid source through the main tubing line and into the CFC. The fluids, containing suspended solids and dissolved solids, are processed through the CFC so that the suspended solids are retained on the centrifuge bowl and the dissolved solids are pumped out of the CFC through the main tubing line and into the elutriate collection tank for sample collection and analysis. The elutriate collection tank includes a tank liner configured to prevent direct contact of pumped fluids with the tank. Excess fluids are returned to the liquid source.

Abstract: A mold for forging a scroll rotor capable of controlling material flow speed by adjusting a land section, a molding device applying same, and a method for manufacturing the mold. In the mold, a die includes an extrusion unit having a molding space therein and a spiral-shaped extrusion passage provided in the lower portion thereof so as to correspond to a wrap portion disposed in the scroll rotor. A punch is connected to the die to be in close contact with the inner circumference of the molding space and to be able to slide up and down. The lower portion has a shape corresponding to the upper surface of the flange portion of the scroll rotor and a boss portion. The extrusion passage has a land section in direct contact with the extrusion material. The length of the land section varies along the spiral direction.

Abstract: Devices, systems, and methods including a lubricating solution bath for a pump integrated into an ophthalmic surgical hand piece are provided. In some embodiments, an ophthalmic pump system includes a housing defining a cavity. The system includes a rotating element positioned within the cavity of the housing. The system includes a flexible tubular structure positioned within the housing adjacent to the rotating element such that rotation of the rotation element urges a fluid through the flexible tubular structure. The system includes a lubricating solution positioned within the cavity around the rotating element and at least a portion of the flexible tubular structure.

Abstract: A method of fabricating a load compressor scroll housing includes the steps of forging near net shape parts that are machined and subsequently welded together. The forged portions are machined to define specific features of the scroll housing along with the mating surfaces. An interface between top and bottom portions is defined within the volute chamber. The weld joint at the interface provides a finished surface within the volute chamber such that airflow is not adversely affected and additional machine process are not required within the volute chamber after formation of the weld joint.

Abstract: Methods of forming scroll compressor components are provided. The methods include forming at least one component of a scroll member from a powder metallurgy technique and joining the component with another distinct component via a sinter-brazing process. For example, a baseplate having a spiral scroll involute is joined to a hub via a joint interface having brazing material to form a braze joint with superior quality. At least one component is formed from a powder metal material including carbon and at least one species that reacts with or binds carbon to prevent migration during brazing of the sinter-brazing heat process. Optionally, during the powder metallurgy process, an alloy with a lower concentration of carbon is selected, which may be incorporated into a crystal structure with the species that prevents carbon migration.

Abstract: A scroll compressor having a rotational shaft insertion hole and a fabrication method thereof are provided. The scroll compressor includes a casing; a fixed scroll fixed to an inner wall surface of the casing; an orbiting scroll combined with the fixed scroll to form a compression chamber while performing an orbiting movement with respect to the fixed scroll; a rotational shaft having a shaft portion inserted into the fixed scroll, an eccentric portion that penetrates the fixed scroll to be combined with the orbiting scroll, and a neck portion having a diameter less than a diameter of the eccentric portion to connect the eccentric portion to the shaft portion, wherein the shaft portion, the eccentric portion, and the neck portion are integrally formed; a fixed bush interposed between the fixed scroll and the shaft portion; and a driving unit configured to drive the rotational shaft.

Abstract: Parts of a pump head of a scroll pump facilitate an assembly process in which the stationary and orbiting scroll blades of the pump are angularly aligned or synchronized with one another. A metallic bellows of the pump head provides a primary means of synchronizing the stationary and orbiting scroll blades. The assembly process may be carried out using a fixture configured to be mountable to an assemblage including the bellows and the orbiting plate scroll. The fixture has a reference feature, and the orbiting plate scroll or the frame has another reference feature that can be aligned with the reference feature of the fixture, in the circumferential direction of the bellows, during the course of the assembly process.

Abstract: A peristaltic pumphead comprising a pumphead housing accommodating a pumping tube, an end of the tube being provided with an end fitting having a through passage and an abutment shoulder and a threaded shank extending from the abutment shoulder into the tube the tube end abutting the abutment shoulder and being accommodated in an opening, in the pumphead housing, the abutment shoulder abutting the housing at the opening, and the end fitting being engaged by a retaining element to retain the abutment shoulder against the housing.

Abstract: A purpose of the invention is to reduce size and weight and to make assembly easier while maintaining high response performance or the like required for a turbocharger for an automobile. A rotor blade upstream flow channel space s2 of a cylindrical portion 22 is gradually reduced from an upstream side toward a downstream side in a swirling direction of exhaust gas e in accordance with a reduction in volume of a scroll chamber s1. That is, a back plate 24 is formed so as to swell out to a rotor blade side gradually from the upstream side toward the downstream side in the swirling direction of the exhaust gas e in accordance with the reduction in volume of the scroll chamber s1. The swelling portion of the back plate 24 approaches a rotor blade 16 beyond a communication portion d, and reaches a position adjacent to a leading edge 16a of the rotor blade 16 at a termination end thereof. Therefore, the flow channel space s2 disappears substantially at this termination end.

Abstract: There are provided a scroll compression device in which magnetization of a rotor and centering of a fixed scroll can be easily performed, and a method of assembling the scroll compression device.

Abstract: A scroll machine according to the present disclosure can include a shell, a first scroll member, a second scroll member and a valve assembly. The valve assembly can permit intermediate pressure in the shell to flow to an area of suction pressure in the shell. The valve assembly can include a first valve manifold that selectively couples to the shell. A second valve manifold can slidably and non-threadably locate against the first valve manifold. A retainer can couple to the first valve manifold to capture the second valve manifold against the first valve manifold. A valve can selectively connect an intermediate flow exiting the shell through the first and second valve manifolds to a suction flow entering the shell.

Abstract: In a method and system for forming tubing to achieve at least one predetermined performance characteristic relating to the flow of a flowable material therethrough, a relationship is determined between at least one material characteristic of the tubing material, at least one operating parameter of the tube forming machine, and the at least one predetermined performance characteristic of the tubing. Based on this relationship, at least one operating parameter for operation of the tube forming machine to achieve the at least one predetermined performance characteristic is determined. The at least one operating parameter is input into the tube forming machine and the machine is operated to achieve the at least one predetermined performance characteristic.

Abstract: A turbocharger includes a compressor housing, a bearing housing and a back plate. A discharge scroll chamber has such a shape that a cross-sectional area thereof gradually increases toward a discharge port in a circumferential direction. The compressor housing includes a scroll piece assembled to a shroud piece. The scroll piece includes a suction port-forming portion, a suction-side concave surface and a scroll outer periphery. The shroud piece includes a shroud fit-in portion, an inner peripheral concave surface, a shroud surface and a diffuser surface. The back plate includes a facing surface, an outer peripheral annular fit-in portion and an outer peripheral concave surface. The outer peripheral concave surface has such a shape that a cross sectional shape thereof formed by a plane including a rotation axis of an impeller gradually changes in the circumferential direction.

Abstract: A counterweight mounted to a drive shaft in a scroll compressor is provided. The drive shaft has a central annular segment generally concentric about the central axis and an eccentric annular segment offset from the central axis that can be used for driving the movable scroll compressor body. A counterweight engages the eccentric and also engages the annular segment for location and mounting of the counterweight to the shaft.

Abstract: The present invention relates to a novel type of tubular insert for connecting an extra-corporeal circuit to a peristaltic pump. This tubular insert comprises a loop formed by a tube portion; the loop comprises a curve which extends around an axis X. The tube which forms the curve has an oval cross-section with a major axis M and a minor axis m perpendicular to each other, where the major axis M is longer than the minor axis m. Finally, in the tubular insert according to the invention, the minor axis m of each cross-section of the tube along the curve is parallel to the axis X The invention further relates to a method for producing the tubular insert and to a peristaltic pump suitable for operating with tubular inserts according both to the invention and to the prior art.

Abstract: A compressor includes a shell, a bearing housing, a compression mechanism and a suction baffle. The shell defines a suction pressure region and a suction gas inlet. The bearing housing is fixed relative to the shell within the suction pressure region. The compression mechanism is located within the shell, supported on the bearing housing and in communication with the suction pressure region. The suction baffle is located within the suction pressure region and includes a main body located radially between the bearing housing and the suction gas inlet, a first tab extending from a first lateral end of the main body, and a second tab extending from the first lateral end of the main body and spaced axially from the first tab to define a first recess between the first and second tabs. The bearing housing defines a first leg extending within the recess.

Abstract: A compressor includes a shaft assembly including a thrust disk disposed on a main shaft and a housing having a first portion and a second portion, the first and second portions adapted to receive the shaft assembly and enclose the shaft assembly therebetween, wherein the shaft assembly is rotatably disposed within the housing, and wherein at least one of the first portion and the second portion includes a shaft assembly retention feature for receiving the thrust disk to regulate a motion of the shaft assembly.

Abstract: A compressor having a lower frame and a method of manufacturing the same are disclosed. The compressor may include a cylindrical shell, a rotational shaft rotatably mounted in the cylindrical shell, a rotor and a stator that rotates the rotational shaft, a compression device driven by the rotational shaft, a lower bearing configured to rotatably support one side of the rotational shaft, a lower frame configured to support the lower bearing, the lower frame being configured to be press-fitted into a lower end portion of the cylindrical shell, and a base configured to seal the lower end portion of the cylindrical shell. The lower frame may include a main body configured to be press-fitted onto an inner circumferential surface of the cylindrical shell and a flange that extends from the main body, the flange being configured to limit a press-fit depth by contacting the lower end portion of the cylindrical shell.

Abstract: A compressing device, a drive shaft and a bearing device are assembled into a tubular member. All-around welding of a cover member to the tubular member is performed to form a casing in such a manner that welding is overlapped over a welding start point, at which the all-around welding is started, to form an overlapped portion in a welding bead generated by the all-around welding. In the all-around welding, heat input is externally applied to a diametrically opposite portion of the casing, which is diametrically opposite to the overlapped portion, so that the diametrically opposite portion is deformed symmetrically with respect to a welding distortion at the overlapped portion.

Abstract: A compressor may include a shell, a bearing housing supported within the shell, an orbiting scroll, a non-orbiting scroll meshingly engaged with the orbiting scroll, fasteners and a drive shaft. The bearing housing may include a central body defining a bore and arms extending radially outward from a central body and defining circumferentially extending grooves. The circumferentially extending grooves may include inner side walls, outer side walls and base regions extending regionally between the inner and outer side walls and defining fastener receiving apertures. The orbiting scroll may be supported on the bearing housing and a non-orbiting scroll may be meshingly engaged with the orbiting scroll and may include flanges defining flange apertures. The fasteners may extend through the flange apertures and the fasteners receiving apertures and secure the non-orbiting scroll to the bearing housing. The drive shaft may extend through the bore and be engaged with the orbiting scroll.

Abstract: Scrolls made from one or more near-net shaped powder metal processes either wholly or fabricated together from sections. Both “conventional” press and sinter methods and metal injection molding methods will be described.

Abstract: A method of assembling a compressor, including assembling, first as a subassembly external of the compressor housing, portions of the motor-compressor unit, including a crankcase, mount brackets, stator, outboard bearing assembly, and drive shaft. Thereafter, the motor-compressor unit subassembly is inserted into a first end of the housing, and the housing is shrink-fit around the subassembly. The mount brackets may then be welded to the interior surface of the housing. Once the mount brackets are welded to the housing, the remainder of the components of the motor-compressor unit, including the orbiting scroll member, the Oldham coupling, and the fixed scroll member, are then assembled to the motor-compressor unit subassembly and the housing through a second end of the housing opposite the first end, followed by welding the top and bottom caps to the housing.

Abstract: A load transmittal apparatus transfers an axial load to a thrust surface during operation of a scroll compressor.

Abstract: A scroll compressor that includes a housing and scroll compressor bodies disposed in the housing. The scroll bodies include a first scroll body and a second scroll body. The first and second scroll bodies have respective bases and respective scroll ribs that project from the respective bases. Further, the scroll ribs mutually engage such that the second scroll body is movable relative to the first scroll body to compress fluid. A drive shaft has an eccentric drive pin configured to engage a drive hub on the second scroll body. The scroll compress also includes a slider block that fits over the drive pin. The slider block has a first drive surface configured to engage a second drive surface of the drive pin. In particular embodiments, the slider block can tilt about one or more edges of the second drive surface when the drive shaft is deflected under load.

Abstract: A scroll compressor that includes a housing and scroll compressor bodies disposed in the housing. A motor is disposed within the housing and operably connected to a drive shaft for driving one of the scroll compressor bodies. The drive shaft is rotationally supported at one end by a crankcase which includes a bearing housing and a bearing. The crankcase includes a plurality of openings or gas passages passing through the crankcase, as well as a plurality of generally cylindrical sections positioned respectively between adjacent openings. The cylindrical sections define contact regions which can engage an inner periphery of the housing when the crankcase is mounted therein.

Abstract: In a scroll compressor of the present invention, tip seals and are fitted in tip seal grooves provided in higher and lower tip surfaces of spiral wraps. One end of the tip seals then repeats contact and non-contact with a bottom land of the other scroll by a revolution in an orbiting manner of an orbiting scroll. In addition, a projection extending in a vertical direction from a back surface of the tip seals is provided at one end of the tip seals that become in a cantilever state. Furthermore, a hole in which the projection is fitted and engaged is formed in one end bottom surface of the tip seal grooves in which the tip seals are fitted.

Abstract: A scroll compressor is provided having a rotational shaft insertion hole and a fabrication method thereof. The scroll compressor may include a casing; a fixed scroll fixed to the casing; a circulating scroll that forms a compression chamber while performing a circulating movement with respect to the fixed scroll; a rotational shaft having a shaft portion inserted into the fixed scroll, an eccentric portion that penetrates the fixed scroll to be combined with the circulating scroll, and a neck portion having a diameter less than that of the eccentric portion; a fixed bush interposed between the fixed scroll and the shaft portion; and a drive configured to drive the rotational shaft.

Abstract: A compressor comprising a sealed chamber delimited laterally by a shell, a drive shaft housed in the shell and guided relative to the other parts of the compressor via at least one bearing provided in a bearing support fixed to the internal wall of the shell. The method comprises steps consisting in supplying a shell have, in the fixing plane of the bearing support, an oval section comprising a small axis to which the bearing support is intended to be mounted, exerting a pressure on the shell in order to elastically deform it so as to increase the length of its small axis, inserting and positioning the bearing support in the fixing plane of the latter, and ceasing to exert a pressure on the shell so that the latter tends to elastically return to its original form and grip the bearing support.

Abstract: A method is provided for extending useful life of tubing of a peristaltic pump. The method can comprise switching inlet and discharge hoses between respective inlet and outlet ends of the tubing of the peristaltic pump, and reversing a direction of rotation of a rotor of the peristaltic pump. In implementations of methods disclosed herein, the useful life of the tubing of a peristaltic pump can be approximately doubled.

Abstract: A method of manufacturing a scroll member includes a casting step and a cutting step. In the casting step an iron casting having a spiraling part is formed. In the cutting step, the iron casting obtained in the casting step is cut to obtain a final shape of the scroll member. Preferably the iron casting obtained in the casting step has a fixing part with the spiraling part extending from one side and a protruding part extending from an opposite side. A specified portion of the spiraling part, a central portion of the fixing part and/or the protruding part has a larger dimension before the cutting step is performed than after the cutting step is performed.

Abstract: A valveless, pulsatile, non-contact, positive displacement, finger-pump for pumping one or more fluids is disclosed. The pump can include one or more channels for holding one or more lengths of flexible tubing. The channels can include an adjustment mechanism and/or a resilient backing plate to reduce over compression of the tubing. The pump can utilize a plurality of profiled, pivoting fingers to sequentially occlude a length of tubing causing a pumping action. The fingers can be moved from the first position to the second position by a motor driven camshaft. Cam lobes disposed on the camshaft can be a modified eccentric design to improve tube occlusion and pump efficiency. At least one cam lobe can completely occlude the tubing at all times during operation to prevent backflow. The fingers can alternatively be moved from the first position to the second position by a variety of linear actuators.

Abstract: A compressor comprising a shell, a compression mechanism disposed within the shell, a drive shaft for operating the compression mechanism, and a motor for driving the drive shaft. A terminal is secured to the shell for delivering electric current to at least one of the compression mechanism and the motor. A terminal block is engaged with the terminal, and a wire carries the electric current from the terminal and the terminal block. A wire retainer located relative to the compression mechanism supports the wire in a predetermined orientation within the shell.

Abstract: A compressor assembly method may include locating a first scroll member on a bearing housing of a compressor having a second scroll member located axially between the first scroll member and the bearing housing. A first outer radial surface on the bearing housing and a second outer radial surface on the first scroll member with an alignment assembly may be engaged to concentrically align the bearing housing and the first scroll member. The first scroll member may be coupled relative to the bearing housing.

Abstract: A method of assembling a compressor, including assembling, first as a subassembly external of the compressor housing, portions of the motor-compressor unit, including a crankcase, mount brackets, stator, outboard bearing assembly, and drive shaft. Thereafter, the motor-compressor unit subassembly is inserted into a first end of the housing, and the housing is shrink-fit around the subassembly. The mount brackets may then be welded to the interior surface of the housing. Once the mount brackets are welded to the housing, the remainder of the components of the motor-compressor unit, including the orbiting scroll member, the Oldham coupling, and the fixed scroll member, are then assembled to the motor-compressor unit subassembly and the housing through a second end of the housing opposite the first end, followed by welding the top and bottom caps to the housing.

Abstract: A positioning system used in assembling a scroll-type fluid machine exerts a horizontal thrust on a stationary scroll in a direction opposite to a direction in which an eccentric shaft end portion formed at one end of a rotary shaft is oriented while turning the rotary shaft, and determines an orbital path of the stationary scroll by measuring horizontal displacements thereof. While exerting the horizontal thrust, the positioning system incrementally presses the stationary scroll against a guide frame until a stable orbital path of the stationary scroll is obtained. When the orbital path is judged to be stable, the positioning system determines a fixing point on which the stationary scroll should be fixedly centered with respect to the guide frame, so that a scroll wrap of the stationary scroll and a scroll wrap of an orbiting scroll are correctly intermeshed, forming a series of pockets therebetween.

Abstract: A positioning system used in assembling a scroll-type fluid machine exerts a horizontal thrust on a stationary scroll in a direction opposite to a direction in which an eccentric shaft end portion formed at one end of a rotary shaft is oriented while turning the rotary shaft, and determines an orbital path of the stationary scroll by measuring horizontal displacements thereof. While exerting the horizontal thrust, the positioning system incrementally presses the stationary scroll against a guide frame until a stable orbital path of the stationary scroll is obtained. When the orbital path is judged to be stable, the positioning system determines a fixing point on which the stationary scroll should be fixedly centered with respect to the guide frame, so that a scroll wrap of the stationary scroll and a scroll wrap of an orbiting scroll are correctly intermeshed, forming a series of pockets therebetween.

Abstract: A bearing material composition that lines a support includes a combination of a thermoplastic conforming material and abrasive particles which provide a combined effect for remedying the effects due to edge loading that may be caused by misalignment between the bearing and a shaft to which a portion is rotatably mounted. The conforming material may be PTFE such that it does not have a memory and is subject to cold flow and creep. As a result, misalignment problems and edge loading are remedied by the combination of abrasive removal of metal material from the drive shaft at the location of edge loading and creep of the conforming material at the location of edge loading which may provide an overall greater bearing interface surface.