摘要:
A slant-plate type compressor including a compressor housing having a cylinder block as disclosed. A plurality of peripherally located cylinders are formed around the cylinder block, and a central bore is formed through the cylinder block. A piston is slidably fitted in each of the cylinders and is reciprocated by a drive mechanism. The drive mechanism includes a drive shaft rotatably supported in the compressor housing, and having one axial end terminating in the central bore. A rearward portion of the central bore is threaded, and an adjusting screw is screwed into the rear portion to adjust the axial position of the drive shaft within the central bore. A spacer is disposed between the inner axial end surface of the drive shaft and the adjusting screw. The spacer includes a plurality of radial projections extending from a peripheral surface, and fitting into corresponding depressions formed in the interior surface of the central bore. The spacer prevents rotational motion of the drive shaft from being transferred to the adjusting screw. Therefore, the position of the adjusting screw and the drive shaft during rotational motion of the drive shaft is constantly maintained.
摘要:
A hermetic type scroll compressor includes a hermetically sealed compressor housing formed by first and second cup shaped casings. The first casing houses a compression mechanism, while the second casing houses a drive mechanism. The compression mechanism includes a fixed scroll affixed to the first cup shaped casing, an orbiting scroll interfitted at an angular and radial offset with the fixed scroll, and a rotation preventing device disposed between the orbiting scroll and the center block. The movement of both the compression and driving mechanisms may be inspected or tested and those mechanisms may be readily disassembled so that component parts thereof may be adjusted or replaced before hermetically securing the first casing to the second casing. Furthermore, each casing is provided with a center block forming, in part, an alignment mechanism for aligning the drive mechanism drive shaft with the orbiting scroll of the compression mechanism.
摘要:
A scroll-type fluid displacement apparatus with a lubricating mechanism to lubricate between an end plate and an opposed spiral wrap is disclosed. The apparatus has a pair of scrolls, each of which comprises a circular end plate and a spiral wrap extending from one side of the end plate. A groove, in which a seal element is loosely fitted, is formed on the axial end surface of each spiral wrap. One spiral wrap has a second groove at its axial end surface and extends close to the outer terminal end of spiral wrap. The sectional shape of the second groove is different from the sectional shape of the first groove to prevent the movement of the seal element in the first groove. Gas containing lubricating oil is supplied to the outer terminal portion of spiral wrap through the first groove and second grooves.
摘要:
A lubricating mechanism for a scroll-type fluid displacement apparatus is disclosed. A driving mechanism for an orbiting scroll comprises a drive shaft and a drive pin projecting at an eccentric location from an inner end surface of the drive shaft. An annular boss projecting from a circular end plate of the orbiting scroll receives the drive pin. Therefore, the orbiting scroll is rotatably supported on the drive pin. The lubricating mechanism includes an oil passageway formed in the circular end plate of the orbiting scroll to communicate between the interior of the boss and one of the fluid packets located at the outer peripheral portion of the spiral elements. Lubricating oil thus flows into the interior of the boss and lubricates the bearing and other contact surface disposed in the center portion of the apparatus.
摘要:
A lubrication system for use in a compressor unit includes a deflector projecting from the inner wall of the compressor housing which collects lubricating oil splashed onto the housing wall and channels the lubricating oil thus collected to the shaft seal cavity.
摘要:
A piston includes a piston body fitted into a cylinder bore and having a sliding peripheral surface disposed in sliding contact with the inner peripheral surface of the cylinder bore. The sliding peripheral surface of the piston body and the inner peripheral surface of the cylinder bore each have a noncircular cross-sectional form. The sliding peripheral surface of the piston body is formed by an elastically deformable sealing member.
摘要:
In a reciprocating compressor in which a suction chamber (7) extends around a discharge chamber (6) parallel to suction, a discharge gas conducting passage (6c) is connected to the discharge chamber and is adjacent to a suction gas inlet passage (7a) in a predetermined direction orthogonal to the plane. The suction gas inlet passage communicates with each of the first and second opposite ends of the suction chamber so that gas is supplied into the suction chamber through each of the first and second opposite ends thereof. A plurality of compression elements are arranged along the suction chamber and connected to the discharge chamber and the suction chamber. Each of the compression elements have a piston (16) which reciprocates to introduce the gas from the suction chamber, to compress the gas, and then to discharge the gas into the discharge chamber.
摘要:
Disclosed is a multicylinder compressor including a cylinder block having a plurality of cylinders, a valve plate provided on an end of the cylinder block and having a plurality of inlet ports and outlet ports, a cylinder head provided on the valve plate and having a partition wall defining a discharge chamber, a discharge valve member provided on the valve plate, and a valve guard member provided in the discharge chamber and restricting the separation distance of each of the plurality of discharge valves of the discharge valve member from the valve plate. The outline of the fringe of the valve guard member is formed along the inner side surface of the partition wall. The valve guard member, particularly the valve guard portions of the valve guard member, can have a high rigidity, even if the thickness of the member is small. Therefore, the compressor according to the present invention can be made to be light-weight and can be produced inexpensively.
摘要:
A sealing mechanism for sealing an aperture formed through a housing of a closed vessel is disclosed. The sealing mechanism includes a bolt having a threaded shaft portion and a flange portion. A seating portion is formed on the outer opening of the aperture and a rotation preventing portion is formed on the surface of the seating portion. A washer is disposed on the seating portion. The washer is made of a metal softer than the material of the housing. When the bolt is rotated the washer contacts the flange portion of the bolt. The axial force of the bolt causes the washer to engage the rotation preventing portion. The rotation preventing portion deforms the washer and prevents the washer from rotating. Therefore, the inner end surface of the washer does not rub against the surface of the seating portion. As a result, adequate sealing is maintained.
摘要:
A slant plate type compressor including a compressor housing having a cylinder block is disclosed. A plurality of peripherally located cylinders are formed through the cylinder block. A piston is slidably fitted in each of the cylinders and is reciprocated by a drive mechanism which includes a slant plate. The slant plate includes a boss for mounting a balance weight ring thereon. The balance weight ring includes an annular depression formed at an inner peripheral portion thereof. The balance weight ring is firmly attached to the boss by different types of retaining means.