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.

A shaft extending along a longitudinal axis has fluid channels that increase and decrease pressure in chambers formed between the interior ends of curved pistons and adjacent closed ends of curved chambers within which the pistons reciprocate as the chamber pressure increases and decreases. The chambers and pistons are in separate cylinder block segments extending outward from opposing sides of the shaft. Each segment may have two sides extending along radial planes and joined by a curved outer surface. Pistons may be provided in pairs and have an interior piston end of each piston in a different cavity in different segments. Exterior ends of each piston in a pair of pistons are connected to a piston connector that extends inwardly from a housing so the housing rotates with the pistons.

A co-rotating scroll is disclosed having a motor having a shaft, a drive scroll connected to the shaft for moving the drive scroll, a driven scroll connected to the drive scroll to be moved by the drive scroll, and an idler shaft for aligning the drive scroll and the driven scroll and for allowing the driven scroll to be moved by the drive scroll.

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.

A scroll-type fluid machine and maintenance method for same are provided in order to improve reliability and workability by supplying sufficient grease to necessary parts of an orbiting bearing or auxiliary crank bearing without entailing a complicated operation during maintenance. The scroll-type fluid machine includes a fixed scroll, an orbiting scroll, a casing provided on the outer side of the orbiting scroll in the radial direction, a drive shaft, an orbiting bearing supporting the drive shaft with respect to the orbiting scroll, and a piping supplying a lubricant to the orbiting bearing. The orbiting scroll is provided with a boss plate that is attached to the drive shaft, the piping is provided in the boss plate, and the tip of the piping faces toward an opening provided between the casing and the fixed scroll or toward an opening provided in the fixed scroll or the casing.

Reduction of a rotational moment that occurs in an orbiting scroll is suppressed. A scroll compressor 10 includes: a fixed scroll 51; an orbiting scroll 52; an anti-rotation mechanism 300; and a back pressure chamber H5. A spiral orbiting wrap 522 of the orbiting scroll 52 is meshed with a spiral fixed wrap 512 of the fixed scroll 51. A first compression chamber C1 is formed by an inner wall surface 522a of the orbiting wrap 522 and an outer wall surface 512b of the fixed wrap 512. A second compression chamber C2 is formed by an inner wall surface 512a of the fixed wrap 512 and an outer wall surface 522b of the orbiting wrap 522. The orbiting base plate 521 of the orbiting scroll 52 includes a first through hole 701 capable of communicating the first compression chamber C1 with the back pressure chamber H5 and a second through hole 702 capable of communicating the second compression chamber C2 with the back pressure chamber H5. The first compression chamber C1 communicates with the back pressure chamber H5 via the first through hole 701 prior to the communication of the second compression chamber C2 with the back pressure chamber H5 via the second through hole 702.

A scroll compressor comprises a fixed bearing seat, a scroll fixed disk, a scroll orbiting disk, and an orbiting disk bearing seat. On the orbiting disk bearing seat, there are circumferentially three first bearing bores, and on the fixed bearing seat, there are circumferentially three second bearing bores. The front end of the locating crankshaft is rotatably connected inside the first bearing bore through the first bearing, and the rear end of the locating crankshaft is rotatably connected inside the second bearing bore through the second bearing. There is a through hole on the bottom face of the second bearing bore. The rear end of the locating crankshaft passes through the second bearing and is inserted inside the through hole. In addition, the end on which the locating crankshaft passes through the second bearing is screw connected with a locking nut.

A low cost scroll device and methods of manufacturing the same are described. The scroll device includes, for example, a drive pin hole and bearing bores machined into a scroll of the scroll device from the same side as the involute of the scroll; idler shaft assemblies with no more than one bearing in the orbiting scroll for mechanically coupling the orbiting scroll to the fixed scroll; and an epoxy coating applied using a process that requires assembly of the scroll device only once.

A low cost scroll device and methods of manufacturing the same are described. The scroll device includes, for example, a drive pin hole and bearing bores machined into a scroll of the scroll device from the same side as the involute of the scroll; idler shaft assemblies with no more than one bearing in the orbiting scroll for mechanically coupling the orbiting scroll to the fixed scroll; and an epoxy coating applied using a process that requires assembly of the scroll device only once.

A co-rotating scroll compressor includes a driving-side scroll member that is rotationally driven by a driving unit and includes a spiral driving-side wall disposed on a driving-side end plate, and a driven-side scroll member (90) that includes a driven-side wall corresponding to the driving-side wall. The driven-side wall is disposed on a driven-side end plate (90a) and engages with the driving-side wall to form a compression chamber. A first support member (33) is provided to a front end of a first driven-side wall (91b) in an axis direction. The first support member (33) is connected to the front end by a positioning pin (40) positioning a phase around a rotation axis, and rotates together with the first driven-side wall (91b). The positioning pin (40) is pressed into the first support member (33) and is fitted into the first driven-side wall (91b) in a non-pressed-in state.