摘要:
A multi-cylinder compressor of the type suitable for use in a vehicle air-conditioning system includes a pair of axially spaced cylinder blocks for receiving a refrigerant fluid therein for compression. First and second sets of pistons are respectively reciprocated within the front and the rear cylinders, respectively by means of first and second sets of rods of different axial lengths. Also disclosed is an improved lubricating system for a compressor which includes a flapper element located near the oil hole to direct oil to the shaft seal for both clockwise and counterclockwise rotation of the compressor. The compressor may also include a slanted surface on the cam rotor for splashing oil onto the compressor housing wall.
摘要:
A method and tool for manufacturing a scroll for use in a scroll type fluid displacement apparatus is disclosed. The method, which uses the tool of the present invention, comprises the steps of: (a) providing a tool formed by a mold including a first molding member having a first involute element and an end plate having a plurality of arc shaped holes; a second involute element rotatably coupled to the first molding member through a plurality of pins axially projecting from an axial end surface thereof, the first and second involute elements forming a radial gap; a rotatable member disposed along the end surface of the end plate of the first involute element and coupled to the pins of the second involute element to transmit the rotation thereof to the second involute element; and a second molding member to cover the open end of the radial gap, the second molding member having an indentation facing and in communication with the open end of the radial gap; (b) filling the radial gap between the first and second involute elements and the indentation with molten metal to form the molten metal into the shape of the spiral element and end plate of the scroll, (c) rotating the rotatable member to enlarge the radial gap after the molten metal solidifies; and (d) removing the scroll formed in the radial gap and the identation from the first molding member.
摘要:
A scroll type fluid displacement apparatus is disclosed which includes a housing having a front end plate and a cup shaped casing. A fixed wrap extends into an operative interior area of the casing from an inner end surface of an end plate of the cup shaped casing. An orbiting scroll has an end plate from which an orbiting wrap extends, and an opening at the center of the end plate. A drive shaft is rotatably supported by the front end plate and a crank pin extends from its inner end surface. The crank pin is rotatably carried within the opening of the end plate of the orbiting scroll through a bearing to thereby rotatably support the orbiting scroll. The crank pin has a radial flange at its inner end surface and a spring washer is disposed between the radial flange and the bearing to urge the orbiting scroll against the front end plate.
摘要:
A manufacturing tool for finishing a preformed scroll for use in a scroll type fluid displacement apparatus is disclosed. The tool includes a working member having an end plate and a first involute element extending from one end surface of said end plate. The end plate has a plurality of arc shaped holes along the outer side wall of the first involute element. A second involute element is rotatably coupled to the working member and interfits with the first involute element in a disposition to define a radial gap between the first and second involute elements. A plurality of pins project axially from an axial end of the second involute element and penetrate through the arc shaped holes. A rotatable member has a plurality of holes extending in the axial direction. The pins have axial end portions which extend into the holes in the rotatable member to couple the rotatable member to the second involute member and to transmit the rotation of the rotatable member to the second involute element so that the relative rotation between the first and second involute elements adjusts the gap between them.
摘要:
A device with an electromagnetic clutch includes a tubular member of steel which is secured to, and cantilevered by, a flange member secured to a housing of the device. A pulley having magnetic pole faces is rotatably mounted on the tubular member by one or more bearings. A drive shaft of the device extends out of the housing and through the tubular member, and supports a magnetic armature on the extended end. An electromagnet associating with the pulley is fixedly supported on the flange member to supply magnetic attraction force for attracting the armature plate to the pulley. In the arrangement, since the wall thickness of the tubular member is made thin, the outer diameter of the clutch can be reduced without degrading the transmission of rotational force. And a shaft seal assembly can be mounted on the drive shaft within the tubular member. Furthermore, the inner ring of the bearing is held between the flange member and a retaining ring fitted onto the tubular member, to be prevented from axial movement. In order to prevent the inner ring from rotating, the inner ring is locked to the flange member by connection of projections and mating depressions formed thereto. Thus, the assembling operation of the electromagnetic clutch is simplified.
摘要:
A shaft seal arrangement in a bore of a compressor housing through which a drive shaft extends, which comprises a first seal sheet fitted into the bore and a second seal sheet mounted on the drive shaft which are secured in position on the shaft by a retainer ring means, the indention comprising: a means for mechanically connecting the first seal sheet with the internal wall of the bore to prevent the first seal sheet from rotating. The means for mechanically connecting the first seal sheet with the internal wall comprises a key loosely fitted into a hole which is defined by an axial groove in the internal surface of the bore and an axial groove in the peripheral surface of the seal sheet. Alternatively, the mechanically connecting means may comprise a projection formed to the retainer ring, which projection is engaged with a depression formed in the first seal sheet thereby to prevent the first seal sheet from rotating.
摘要:
A fluid suction and discharge apparatus suitable for a compressor for an air-conditioning system for automobiles, having means for extending the life time of the suction reed valve and for suppressing noise due to the vibration of the suction reed valve. A pin having a head of an increased radius is secured to the inner surface of the valve plate with the pin extending through a slit provided in the suction reed valve at a portion between the secured end thereof and the region thereof facing the inlet port in the valve plate, whereby the suction reed valve may be suppressed from overbending. Another means for restricting the bending of the suction reed valve within a predetermined extent may be provided which comprises an axial recess formed in the inner surface of the cylinder from an end thereof facing the valve plate by a predetermined distance, with an extended free end of the suction reed valve being received in the recess.
摘要:
A scroll type fluid compressor including a housing, a pair of scroll elements each comprising an end plate and a spiral wrap means projecting from one surface of the end plate. Both wrap means are interfitted to make a plurality of line contacts and are formed with a groove on the end surface of each wrap means which receives a seal element. Each groove is formed with its center line inward of the center line of its respective spiral wrap. This construction prevents the walls of the groove from prematurely deteriorating and causing attendant destruction of the scroll elements.
摘要:
A reciprocating piston type refrigerant compressor includes a compressor housing having a cylinder block provided with a plurality of cylinders and a crank chamber adjacent the cylinder block. A piston slides within each cylinder and is reciprocated by a wobble plate driven by a cam rotor mounted on a drive shaft. The cam rotor includes an adjustable slant plate with a sloping surface at an adjustable slant angle in close proximity to the wobble plate. Accordingly, the stroke of the pistons within the cylinders can be changed by adjusting the slant angle of the sloping surface. The slant angle of the sloping surface is adjusted in response to the change of pressure in the crank chamber. The crank chamber communicates with the suction chamber through a passageway and a valve control mechanism controls the opening and closing of the passageway. Thus, the capacity of the compressor of the present invention can be adjusted by changing the slant angle of the sloping surface of the slant plate in response to operation of the valve control mechanism.
摘要:
A scroll-type fluid displacement apparatus is disclosed having a pair of scroll members each comprising an end plate and a spiral wrap extending from one side of the end plate. The spiral wraps interfit at an angular and radial offset to make a plurality of line contacts to define at least one pair of sealed-off fluid pockets. At least one of the scroll members has a discharge port or fluid hole near the center of the spiral element and is provided with an anti-wear plate on its end surface facing the other scroll member. The anti-wear plate is an involute plate that covers substantially the area of the end surface of the end plate on which the spiral wrap of the other scroll member makes contact during the orbital motion of the orbiting scroll member. The radially inner end of the anti-wear plate is spaced from the discharge port to avoid blocking the discharge flow or covering the discharge port. Therefore, the undesirable vibration of the anti-wear plate by fluid flowing through the port is avoided.