A sealing arrangement for a sliding vane machine for compressing or expanding a fluid, for sealing between a rotating plane surface on a rotor and a machine housing to prevent flow of process fluid between an internal volume to an external volume of said vane machine a seal pocket located at a housing end and said seal pocket opens towards the direction of the external volume and the internal volume, an assembly arranged for mounting in said seal pocket, said assembly comprising: a piston arrangement, a sealing bearing ring between said piston arrangement and said plane surface, a fluid supply line for a pressurized lubrication fluid through said housing to a piston cavity, said piston arrangement further having piston fluid channels and said bearing sealing ring having lubrication conduits through said bearing seal ring, corresponding with said piston fluid channels, said pressurized lubrication fluid arranged for moving said piston against said sealing bearing ring and thus moving said sealing bearing ring against said sealing surface thus forming a sealing arrangement.

The present disclosure provides a compressor and an air conditioner having the same. The compressor includes: a main shaft with a convex portion and a slip sheet; a cylinder; and an air inlet and outlet device including a disk body and an air suction port including an outer side, an inner side and a connecting side located between the outer side and the inner side, wherein the outer side is overlapped with an inner wall of the cylinder or is located on the inner side of the inner wall of the cylinder, the inner side is overlapped with an outer wall of the convex portion or is located on the outer side of the convex portion, and the connecting side is overlapped with a side wall of the slip sheet or is located on the inner side of the side wall of the slip sheet.

A supercharger having twisted meshing rotors sealingly contained within a housing having an inlet port to admit air into the meshing rotors and an outlet port to expel air from the meshing rotors, the rotors having mesh points where the rotors contact one another and spaces between their mesh points to accept air from the inlet port and propel it to the outlet port as the rotors are rotated and the mesh points travel axially, the housing, inlet and rotors defining an angle known as the seal transfer angle which is greater than or equal to zero degrees when the inlet port is closed and the volume of air between rotors is sealed and has no leakage path. In the described supercharger the housing, rotors and inlet port are configured to have a negative seal transfer angle of, e.g., 10 to 40 degrees or more, up to the maximum available, and to provide a leakage path for an angular portion of the rotors' rotation, improving high end performance without degrading low end performance

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.

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.

A co-rotating scroll compressor includes a driving-side scroll member (70) that is rotationally driven by a driving unit and includes a spiral driving-side wall (71b) disposed on a driving-side end plate (71a), and a driven-side scroll member that includes a driven-side wall corresponding to the driving-side wall (71b), the driven-side wall being disposed on a driven-side end plate and engaging with the driving-side wall (71b) to form a compression chamber. Positioning pins (40) that position a phase of the driving-side scroll member (70) around a driving-side rotation axis (CL1) are provided at two positions around the driving-side rotation axis (CL1) at a front end of the driving-side wall (71b) in an axis direction, and dummy pins (41) that are provided at equal angular intervals around the driving-side rotation axis (CL1) with the positioning pins (40) are provided.

A scroll compressor includes a first chamfered portion formed at a distal end portion of a spiral blade of a fixed scroll, a second chamfered portion formed at a distal end portion of a spiral blade of an orbiting scroll, a third chamfered portion formed at a bottom portion of the spiral blade of the fixed scroll, and a fourth chamfered portion formed at a bottom portion of the spiral blade of the orbiting scroll. An expression of 0<{(Av1+Av2)/2}/Ac<110.sup.4 is satisfied where a sectional area of a space between the first chamfered portion and the fourth chamfered portion is defined as Av1, a sectional area of a space between the second chamfered portion and the third chamfered portion is defined as Av2, and a sectional area of a compression chamber is defined as Ac.

A scroll compressor includes a movable scroll and a fixed portion. The fixed portion has a first bearing surface. The movable scroll has a second bearing surface. The scroll compressor includes a back pressure chamber located between the movable scroll and the fixed portion. At least one of the movable scroll and the fixed portion is provided with a groove disposed on a periphery of the back pressure chamber. The scroll compressor further includes a sealing assembly at least partially installed in the groove. One end of the sealing assembly is in contact with a groove bottom surface in the groove, and another end of the sealing assembly is in contact with the first bearing surface or the second bearing surface. The sealing assembly includes a wear-resistant ring and an elastic ring. The elastic ring has at least one recess on a surface thereof.

A scroll compressor includes a first chamfered portion formed at a distal end potion of a spiral blade of a fixed scroll, a second chamfered portion formed at a distal end portion of a spiral blade of an orbiting scroll, a third chamfered portion formed at a bottom portion of the spiral blade of the fixed scroll, and a fourth chamfered portion formed at a bottom portion of the spiral blade of the orbiting scroll. An expression of 0<{(Av1+Av2)/2}/Ac<110.sup.4 is satisfied where a sectional area of a space between the first chamfered portion and the fourth chamfered portion is defined as Av1, a sectional area of a space between the second chamfered portion and the third chamfered portion is defined as Av2, and a sectional area of a compression chamber is defined as Ac.

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.