Abstract: A scroll compressor includes scroll compressor bodies with axial tip seals projecting from the respective scroll ribs of fixed and movable scroll compressor bodies. An extended thrust region is provided in surrounding relation to an inner axial tip sealing region to provide for carrying thrust loads in the event that the scroll compressor bodies are forced axially together. Part of the thrust region may carry a tip seal, while another part may be free of a tip seal. This provides for at least a nominal reverse operation capability.

Abstract: The present invention relates to the field of combustion engines and more specifically to a rotary positive displacement combustor engine. The device employs a scroll compressor and a scroll expander with an orbital shaft displaced between the compressor and expander supplying a means and link for compressing fluids within the scroll compressor and disposing the fluid within the scroll expander within which an ignition source is placed at strategic points within a pair of first isolated zones of the orbiting scroll expander generating a highly efficient process for capturing mechanical and thermal energy from combustion.

Abstract: A scroll compressor performing three-dimensional compressions, which can optimize a tip clearance in operation while considering a thermal expansion and a pressure deformation and which can reduce a compression leakage to improve a compression efficiency thereby to realize a high performance. The leading end faces (13c and 13d) and the bottom face of a spiral wrap (13b) have a step portion (13e), and the wrap height on the outer circumference side of the spiral wrap (13b) is made larger than that on the inner circumference side wrap height. The spiral wrap (13b) on the inner circumference side with respect to the step portion (13e) is stepwise or continuously made gradually lower toward the center side of the spiral wrap (13b), and the tip clearance (?i) of the spiral wrap on the inner circumference side with respect to the step portion (13) is made gradually larger toward the center side of the spiral wrap (13b).

Abstract: Modifications of a scroll compressor provide a bellows suitable for liquid cooling and a plunger actuated seal for the scroll tips of various equipment. A bellows spans the fixed and the orbiting scrolls and hermetically seals the scroll device. Using two bellows, the present invention allows for liquid cooling of a compressor with an inlet and an outlet to exhaust heated coolant to a heat exchanger. Then the scrolls have a spiral upon a plate that ends in a tip. A seal upon the tip that abuts the fixed scroll upon a biased plunger modifies existing scroll designs to maintain the seal in contact with the fixed scroll. The modifications also provide an improved coating that seals the fixed and orbiting scrolls to each other without the use of epoxy, disassembly, and cleaning.

Abstract: A self-modulating scroll compressor includes a built-in volume ratio that is defined as the ratio of a volume of a compression pocket just after completion of suction, i.e. at a beginning of a compression cycle, to the volume of the compression pocket just prior to discharge, i.e. at the end of the compression cycle. The built-in volume ratio can be controlled by the geometry of the scrolls and can be modified by, for example, extending the wrap or adding more turns to the wrap. Because the built-in volume ratio decreases to an effective volume ratio at lower capacity operation, the built-in volume ratio is at least 2.4 in order to optimize overall compressor efficiency.

Abstract: A fixed scroll board 2 is attached to a casing 1. Three fixed wraps 2a are provided on the fixed scroll board 2. An eccentric bush 8 is rotatably supported by the casing 1. A pivot shaft 12 is eccentrically supported in an eccentric hole of the eccentric bush 8. A scroll board 3 with three orbiting wraps 3a is provided integrally with the pivot shaft 12. A plurality of pumping chambers 13 are formed between the fixed wraps 2a and the orbiting wraps 3a. An inlet port 4, which is communicated with an intake chamber formed inside a seal wall 2b of the periphery of the fixed scroll board 2, is provided. An outlet port 5 is provided on the fixed scroll board 2. The pumping chambers 13 takes in and discharges working fluid three times during one rotation of the eccentric bush 8.

Abstract: A scroll compressor is constructed by combining a stationary scroll and an orbiting scroll formed by erecting a scroll-shape wrap upright on a base plate meshing with each other. A scroll member constructing the stationary scroll or the orbiting scroll is constructed of an inner layer member 601 forming a core metal and an outer layer member 600 arranged so as to surround the inner layer member and forming an outer layer part, the inner layer member is constructed of a material with higher modulus of elasticity than that of the outer layer member, and separation prevention parts (uneven parts 603, depressions 604, or holes 605) preventing the inner layer member and the outer layer member from separating with each other due to difference in coefficient of thermal expansion thereof are arranged in the inner layer member.

Abstract: A compressor may include first and second scroll members and a compensation member. The first scroll member may include a first end plate and a first spiral wrap extending therefrom. The second scroll member may include a second end plate and a second spiral wrap. The second end plate may be positioned proximate to a distal end of the first spiral wrap. The first end plate may be positioned proximate to a distal end of the second spiral wrap. The compensation member may engage the first scroll member and having a first reaction to a temperature change causing the first scroll member to maintain a sealed relationship between the first end plate and the distal end of the second spiral wrap.

Abstract: A scroll compressor is provided which has favorable assembling property, does not require a thrust bearing, has a bearing structure for bearing a compression section at both sides thereof and has a simple structure of a scroll.

Abstract: A scroll compressor is provided in which the amount of lubricant oil supply is appropriately controlled over a low to high rotational frequency range of the scroll compressor. The scroll compressor has an oil supply unit and an oil supply passage. The oil supply unit includes a small hole with a diameter not exceeding a seal ring width of the sealing part and a groove which are formed on the end plate of the boss portion on the back side of the orbiting scroll. As the orbiting scroll orbitally moves, oil in the high pressure hydraulic chamber pools in the small hole to be discharged, across the seal ring, into the back pressure chamber. The oil supply passage communicates between the high pressure hydraulic chamber and the back pressure chamber.

Abstract: a First gap (15) in a thrust direction between teeth bottoms of a fixed mirror plate (2b) and teeth tips of an orbiting lap (4a), and a second gap (16) in the thrust direction between teeth bottoms of an orbiting mirror plate 4b and teeth tips of a fixed lap (2a) are formed such as to gradually increase from an outer peripheral side to an inner peripheral side of a scroll compressor, the first gap (15) is made greater than the second gap (16). Contact surface pressures of the laps (2a) and (4a) are kept low with respect to pressure formation, contact pressure of the teeth tips of the fixed scroll part (2) and the teeth bottoms of the orbiting scroll part (4)are equally maintained. With this loads applied to the scroll parts (2) and (4)are equally received by a thrust surface.

Abstract: A scroll compressor includes an orbiting scroll engaged with a front case by pins and rings or ring holes to prevent rotation of the orbiting scroll. The rings or the ring holes have such an inside diameter that an orbiting radius defined by the pins and the rings or the ring holes is larger than a theoretical orbiting radius defined by engagement between gear surfaces of a fixed scroll and the orbiting scroll. The pins, the rings, or the ring holes are shifted in such a direction as to relieve twisting of the orbiting scroll relative to the fixed scroll.

Abstract: At least one bypass opening is formed in a base of a scroll member, and communicates with at least one compression chamber. The bypass opening communicates with a passage leading to a suction pressure chamber within a compressor shell. A valve includes an element electrically powered to move between a first position at which it blocks flow of refrigerant from the bypass port to the passage leading to the suction pressure chamber, and a second position at which it allows flow of refrigerant between the bypass port and the passage leading to the suction pressure chamber. A portion of the valve, which is electrically powered, is mounted outside of the compressor shell.

Abstract: A scroll compressor is provided with injection tubes which extend through an upper shell and into a fixed scroll member. The injection tubes are fixed relative to the fixed scroll member, and may be press-fit or otherwise secured. This arrangement simplifies the provision of injection ports into a scroll compressor.

Abstract: A scroll compressor includes an orbiting scroll member having an orbiting end plate defining a discharge port and an orbiting spiral wrap extending from the orbiting end plate. The compressor also includes a non-orbiting scroll member having a non-orbiting end plate and a non-orbiting spiral wrap extending from the non-orbiting end plate. The non-orbiting spiral wrap is intermeshed with the orbiting spiral wrap. Furthermore, a bearing housing extends from the non-orbiting end plate opposite from the non-orbiting spiral wrap, and a drive member causes the orbiting scroll member to orbit relative to the non-orbiting scroll member whereby said spiral wraps create pockets of progressively changing volume between a suction pressure zone and a discharge pressure zone. The drive member extends through the bearing housing, the non-orbiting scroll member and the orbiting scroll member. Also, the scroll compressor includes a discharge valve for controlling fluid flow through the discharge port.

Abstract: A bolt hole receiving a fixing bolt is formed in a portion of an end plate overlapping an annular piston or a fixed wrap as viewed in a thickness direction of the end plate to open at the back face of the end plate. In fixing a discharge valve to the end plate, the fixing bolt is screwed into the bolt hole.

Abstract: In a positive displacement machine for compressible media, having a spiral-shaped feed chamber (11) arranged in a housing (7b) between cylinder walls (14, 15), a spiral-shaped displacement body is composed of a disc (2) with spiral-shaped strips (3). The strips (3) are held eccentrically with respect to the housing, in such a way that, during operation, each point of the strip performs a movement which is limited by the peripheral walls of the feed chamber. The contour (20) of the disc is formed, in the overlapped region of the spiral at the point provided for the mutual sealing of the traversed chambers (11, 16), in the shape of the movement path. The housing edge (19) is formed, as a transition between the raised first part (17) and lowered second part (18) of the outer cylinder wall (14) of the housing, as a bulbous thickened portion. The radial extent “D” of the thickened portion is at least as great as the degree of eccentricity (“e”).

Abstract: The scroll machine has a first and a second scroll member each having intermeshed scroll wraps. A compensation member is attached to one of the scrolls. As the scroll machine warms to operating temperature, the compensation member exerts a force on the one scroll member causing it to deflect. The deflection of the scroll member compensates for the unequal growth of the scroll wrap which is caused by a temperature difference between the radially inner section and the radially outer section of the scroll wrap.

Abstract: A scroll compressor including a hermetic housing with a motor-compressor unit disposed therein, including fixed and orbiting scrolls. The fixed scroll defines perpendicular axial and radial directions, and includes an outer wall having a suction inlet facing substantially in the radial direction. A baffle member is associated with the suction inlet of the fixed scroll, and in one embodiment, is attached to the fixed scroll with fasteners. The baffle member includes a first open end facing in the axial direction toward a suction port of the compressor housing, and a second open end facing in the radial direction in fluid flow alignment with the suction inlet of the fixed scroll. The baffle member directs a portion of the working fluid which enters the compressor housing substantially directly into the suction inlet of the fixed scroll to reduce turbulent flow of the working fluid within the compressor housing, improving the operating efficiency of the compressor.

Abstract: To provide a scroll type fluid machine which can ensure that even when the pressure ratio of the pressure P1 of its high pressure chamber (back pressure chamber) to the pressure P2 of its low pressure chamber (P1/P2) is low, its orbiting scroll be pressed against its fixed scroll without having its orbiting scroll increased in diameter to prevent any leakage of a fluid through between the front end face of the wall of its orbiting scroll and the bottom face of the end plate of its fixed scroll. The scroll type fluid machine has an Oldham's keyway (17) formed along the edge of the back side of the orbiting scroll end plate (13a) for holding one end portion of an Oldham's ring (10) slidably, and a sealing member (18) has a tongue part (18a) formed to cut off the flow of any fluid from the back pressure chamber to the Oldham's keyway (17).

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 scroll compressor an orbiting scroll member including a second end plate, a second wrap extending from the second end plate and meshingly engaged with the first wrap to form a suction pocket in fluid communication with a suction pressure region of the compressor, intermediate compression pockets, and a discharge pocket in fluid communication with the discharge passage. An auxiliary passage is in fluid communication with one of the intermediate compression pockets to provide pressurized fluid to the chamber to deflect the first end plate and the first wrap axially toward the orbiting scroll member.

Abstract: A scroll fluid machine that is capable of preventing a power loss and enhancing the degree of hermeticity of compression chambers. A plurality of outer peripheral projections are formed on an outer peripheral surface of a wrap portion of each scroll. An outer peripheral coating layer is formed on an outer peripheral surface of a wrap portion of a fixed scroll, and an inner peripheral coating layer is formed on an inner peripheral surface of the wrap portion. Each of the coating layers comprises: contact portions that make contact with the mating wrap portion; and non-contact portions that do not make contact with the mating wrap portion. In this way, the degree of hermeticity of the compression chambers can be enhanced by the contact portions, and power loss can be prevented by the non-contact portions.

Abstract: A scroll fluid machine that is capable of preventing a power loss and enhancing the degree of hermeticity of compression chambers. A plurality of outer peripheral projections are formed on an outer peripheral surface of a wrap portion of each scroll. An outer peripheral coating layer is formed on an outer peripheral surface of a wrap portion of a fixed scroll, and an inner peripheral coating layer is formed on an inner peripheral surface of the wrap portion. Each of the coating layers comprises: contact portions that make contact with the mating wrap portion; and non-contact portions that do not make contact with the mating wrap portion. In this way, the degree of hermeticity of the compression chambers can be enhanced by the contact portions, and power loss can be prevented by the non-contact portions.

Abstract: A scroll compressor and a refrigerating apparatus having the same are provided. In the scroll compressor, an angle formed between an injection passage that guides refrigerant from a condenser back into an intermediate compression chamber and a back pressure passage that guides refrigerant from the intermediate compression chamber into a back pressure chamber may be designed so as to prevent leakage of refrigerant from the intermediate compression chamber into the back pressure chamber. This allows an appropriate pressure to be maintained the back pressure chamber, and increases an amount of refrigerant supplied into the compression chambers, thereby improving performance of the scroll compressor and a refrigerating apparatus in which such a scroll compressor is installed.

Abstract: The present invention relates to a scroll compressor. The scroll compressor is configured to have a discharge outlet (113) of a fixed scroll (110) and a discharge guide groove of an orbiting scroll (120) for med in non-circular shapes such as a heart shape. Accordingly, it is capable of preventing a refrigerant from being incompletely or excessively compressed without additional bypass valves, thereby being capable of reducing a fabrication cost of the compressor. And, since it is not required to consider interference by other components at the time of installation of a bypass valve, it is capable of simplifying a fabrication process.

Abstract: A compression mechanism is configured to be used in a scroll compressor. The compression mechanism includes a fixed scroll and a movable scroll. One of the fixed scroll and the movable scroll is a cast iron molding fabricated through semi-molten die casting, and the other of the fixed scroll and the movable scroll is a grey iron casting.

Abstract: At least one of the scroll members is composed of a metallic insert having substantial the same configuration of the scroll member, i.e. an end plate and spiral wraps fixed to and extended from the end plate. The metallic insert has anchor holes and connecting holes for bonding the plastic coating layer on to the metallic insert. The anchor holes also serve as gas escaping passages during injection molding process. The mold has multiple poring gates to minimize the pressure gradients across the spiral wraps during the injection molding process. The metallic insert has also tubers sticking out from the tip of its spiral wraps. The tubers are firmly held by the mold in the injection molding process to prevent movement of the spiral wraps under the pressure from the injected plastic flow. The metallic inserts can be fully or partially coated by the plastic compound such that there is no metallic to metallic contact between the scroll members during operations.

Abstract: A dry vacuum pump comprises a stator component and at least one rotor component. To improve the tolerance of the pump to corrosive gases passing through the pump, the stator component and/or said at least one rotor component are formed from silicon-molybdenum (SiMo) ductile iron.

Abstract: An object of the present invention is to provide a scroll compressor capable of three-dimensional compression, which can prevent performance deterioration and performance variation due to gas leakage occurring on an outer peripheral side of a step portion of a spiral wrap and can achieve performance stabilization and performance improvement.

Abstract: A compressor includes a first porting extending through an end plate of an orbiting scroll member at an angular extent of at least twenty degrees and first and second spiral wraps defining modulated capacity pockets when the orbiting scroll is in a first position. The first modulated capacity pockets may include a set of radially outermost compression pockets located radially inward relative to the first porting and isolated from communication with the first porting during an entirety of the compression cycle. The first porting may align with the second spiral wrap at a location radially outward from and directly adjacent the first modulated capacity pockets when the orbiting scroll member is in the first position.

Abstract: A scroll compressor, wherein a guide passage facing the supply passage of a fixed side substrate part is formed at the outer peripheral portion of a fixed scroll engaged with a movable scroll along the axial direction of the fixed scroll. A lubricating oil is stored in an oil storage tank surrounded by a set of weir walls formed along the guide passage and the movable side substrate part of the movable scroll facing a fixed side spiral wall. The movable side substrate part is radially displaced by the turning action of the movable scroll to supply the lubricating oil stored in the oil storage tank to the movable scroll side.

Abstract: A compressor may include a housing, orbiting and non-orbiting scroll members, a first porting, and a second porting. The first and second porting may each extend through the end plate of the non-orbiting scroll member and may each have an angular extent of at least twenty degrees. An ending point of the first porting may be rotationally spaced from a starting point of the first porting by the angular extent in a rotational direction of a drive shaft of the compressor. An ending point of the second porting may be rotationally spaced from a starting point of the second porting by the angular extent in a rotational direction opposite the rotational direction of the drive shaft. The ending point of the second porting may be rotationally spaced from the starting point of the first porting by less than one hundred and eighty degrees in the rotational direction of the drive shaft.

Abstract: In the hermetically sealed scroll compressor, an injection pipe for injecting a fluid to a compression chamber is connected to an injecting port of a fixed scroll. The injecting port includes a first injecting port which is provided in the vicinity of a fixed scroll inner curve and injects the fluid to an orbiting outer compression chamber, and a second injecting port 22b which is provided in the vicinity of a fixed scroll outer curve and injects the fluid to a orbiting inner compression chamber 8b. The second injecting port is placed in parallel in a radius direction with respect to the first injecting port and is placed so that an orbiting scroll wrap does not practically communicate with the orbiting outer compression chamber in the state in which the orbiting scroll wrap is in contact with the outer side of a fixed scroll wrap.

Abstract: A scroll compressor is provided. The scroll compressor includes a fixed scroll and an orbiting scroll, each with a wrap extending from a plate. The wrap or the plate may have different heights so as to prevent a gap from forming between the end of one of the wraps and the opposite plate. Accordingly, performance of the compressor may be enhanced even if manufacturing tolerances are not precisely controlled or the compressor operates for an extended period of time. Furthermore, frictional loss due to increased frictional area of an edge of the plate may be prevented, and refrigerant leakage due to separation between the wrap and the plate may be prevented.

Abstract: A scroll fluid machine comprises a driving shaft in a housing. An orbiting scroll is eccentrically revolved around an eccentric axial portion of the driving shaft via a bearing. Air is introduced from outside through an intake port of a circumferential wall of the housing and directed toward the bearing by a guide to cool the bearing.

Abstract: A scroll compressor comprises a fixed scroll, an orbiting scroll engaged with the fixed scroll to form a compression chamber therebetween, a back pressure chamber arranged at a back side of an end plate of the orbiting scroll, a back pressure hole formed in the end plate of the orbiting scroll to form a fluidal communication between the compression chamber and the back pressure chamber, and a release valve mechanism for discharging the fluid from the compression chamber to the discharge space when a pressure in the compression chamber is higher than the pressure in the discharge space, wherein the back pressure hole and the release flow path are arranged to prevent both of the fluidal communication and the another fluidal communication from being formed simultaneously.

Abstract: An axial air cooling system for scroll-type positive fluid displacement apparatus provides needed cooling. The system includes an axial fan and centrifugal pump and internal cooling air channels inside parts integrating main housing, base housing and motor housing with their corresponding shell parts by cooling fins. The cooling air channel also includes passages inside the orbiting scroll, shaft central hole and gaps inside stator slots and winding. Heat pipes are installed inside the fixed and orbiting scrolls to conduct heat from inside of the apparatus to the peripheral condenser portion of the heat pipes to be cooled by the cooling air.

Abstract: A scroll compressor in which a scroll fixed lap rising from a fixed plate of a fixed scroll and a scroll orbiting lap rising from an orbiting plate of an orbiting scroll are combined with each other to form compression chambers therebetween, the fixed scroll is made of iron-based material, the orbiting scroll is made of aluminum-based material, at least the plate back surface of the orbiting scroll is subjected to surface processing.

Abstract: Intended is to provide a scroll compressor capable of performing three-dimensional compressions, which can optimize a tip clearance in operation while considering a thermal expansion and a pressure deformation and which can reduce a compression leakage to improve a compression efficiency thereby to realize a high performance. The leading end faces (13c and 13d) and the bottom face of a spiral wrap (13b) have a step portion (13e), and the wrap height on the outer circumference side of the spiral wrap (13b) is made larger than that on the inner circumference side wrap height, so that the scroll compressor can perform three-dimensional compressions capable of compressing in the circumferential direction of the spiral wrap (13b) and in the wrap height direction.

Abstract: A scroll compressor and an air conditioner in which improvement of performance is achieved by a gas injection cycle and increase in manufacturing cost is prevented are provided.

Abstract: A scroll compressor includes a fixed scroll, an orbiting scroll structuring an operation chamber for a fluid with the fixed scroll and compressing the fluid in the operation chamber by orbiting relative to the fixed scroll, a shaft having an eccentric portion connected to the orbiting scroll and receiving a driving force to rotate, a housing accommodating the orbiting scroll, the housing integrally provided with the fixed scroll, a tooth integrally formed at the orbiting scroll and extending in a radial direction of the orbiting scroll and an engaging portion integrally formed in the housing, the engaging portion facing the tooth in the radial direction of the orbiting scroll and engaging with the tooth in a circumferential direction of the orbiting scroll.

Abstract: A scroll compressor that suffers no decrease in compression performance due to leakage resulting from a twisting assembly error is provided. This scroll compressor includes a fixed scroll and an orbiting scroll, each including a spiral wrap protruding from an end plate and having the same tooth thickness (Tr) and the same base-circle radius (b) defining an involute surface. The fixed scroll and the orbiting scroll are offset from each other by an orbiting radius (?) and mesh such that the respective wraps face each other with a phase shift of 180°. The orbiting scroll revolves/orbits along a circular orbit with the orbiting radius (?) to compress a gas while a rotation-preventing mechanism prevents rotation of the orbiting scroll.

Abstract: Provided is a scroll compressor that is capable of three-dimensional compression, ensuring a required wrap strength while increasing a shoulder section height of a spiral wrap, and facilitating wrap processing. The scroll compressor includes shoulder sections at an end surface and a bottom surface of spiral wraps of a paired fixed scroll member and revolving scroll member and configured to be capable of three-dimensional compression in a circumferential direction and a height direction of the spiral wraps by setting a spiral wrap height of the spiral wraps further toward the outside of the shoulder sections greater than the spiral wrap height of the inward side, and wherein the shoulder sections provided on the end surface and the bottom surface at the spiral wrap are constructed of a plurality of shoulder sections, and the heights of the shoulder sections are set to heights in which base stresses at the shoulder sections are substantially equal.

Abstract: A compressor includes orbiting and non-orbiting scroll members meshingly engaged to form a series of compression pockets, including first pockets when the orbiting scroll member is in a first position. A first porting in the non-orbiting scroll member communicates with the first pockets during a portion of a compression cycle. The first pockets include a set of radially outermost pockets located radially inward relative to the first porting and isolated from communication with the first porting during the compression cycle. The first porting is aligned with a spiral wrap of the orbiting scroll member at a location radially outward from and directly adjacent the first pockets when the orbiting scroll member is in the first position. Additional porting communicates with each of the compression pockets located radially outward relative to the first pockets when the orbiting scroll member is in the first position.

Abstract: A scroll compressor is provided which has favorable assembling property, does not require a thrust bearing, has a bearing structure for bearing a compression section at both sides thereof and has a simple structure of a scroll.

Abstract: There is provided a fluid machine able to secure a sectional area of a passage sufficient for gaseous fluid flow from a suction port to a compression mechanism, while able at the same time to achieve a reduction in size of the outline shape. In a scroll compressor where a scroll compression mechanism is housed within a housing having a funnel shaped, a compression mechanism main body of the scroll compression mechanism is arranged in a wide opening section of a front housing, and a compression mechanism driving section is arranged in a narrow section, a concave section is formed on the outside of a thrust receiving surface which is positioned on a bottom surface of the wide opening section and which supports the compression mechanism.

Abstract: A coupling mechanism for a scroll compressor comprises an orbiting scroll disk, a retention bolt, a bearing shaft and a retention nut. The orbiting scroll disk includes a first face configured to engage a stationary scroll disk to compress a working fluid, and a second face having a hub. The retention bolt is inserted into the hub. The bearing shaft is fit onto the retention bolt and includes a bearing surface for engaging a drive bushing of a drive shaft. The retention nut is threaded onto the retention bolt to retain connection of the bearing shaft with the orbiting scroll disk.

Abstract: An orbit control device for a scroll compressor is disclosed including at least one pin disposed in an orbit scroll, a support plate having at least one support hole formed therein, and a guide plate having at least one guide hole formed therein. Contact of an outer surface of the pin with an inner surface of the guide hole militates against a deviation by the orbit scroll from a desired trajectory.

Abstract: A scroll compressor build assembly is provided. An outer housing includes multiple shell sections that interfit to provide internal steps that provide seating surfaces. One or both bearing members can use the internal seats. The outer housing may comprise three shells that telescopically interfit and that can be welded with circumferential welds.