摘要:
A refrigerant compressor of the type in which a cylinder block and front and rear housings made of an aluminum alloy are fastened together by means of a plurality of bolts made of a ferrous metal and extending through part of the refrigerant gas passage in the compressor and respective bores formed in the front housing, is disclosed. Each of the bolts has a head supported on a bearing surface formed on said housing means, the bearing surface being formed by an annular projection concentric with the bore in the housing. The annular projection is plastically deformed by the bolt when the compressor is assembled, and the bolt head is carried by such deformed annular projection so that an increase in the tightening force is taken up by the elasticity of the projection.
摘要:
A method of adjusting a rotary machine includes the steps of press fitting an adjustable member to one of a housing and a rotary body where the adjustable member is arranged to a reference position at which movable amount or a rotary body is zero, and adjusting the movable amount of the rotary body in a direction of a rotary axis to the predetermined amount by varying a position of the adjustable member that is press-fitted to the one of the housing and the rotary body from the reference position by the predetermined amount in a direction in which the movement restricting part and the contacting part contacting with each other are separated from each other.
摘要:
A compressor is described having a pair of casings fastened together by a plurality of bolts. A piston is located for reciprocation within a cylinder bore formed in the casings. A cam plate is mounted on a rotary shaft supported by the casings to reciprocate the piston. The cam plate is held by the casings between a pair of thrust bearings. The casings include adjoining surfaces fitted to each other and a member sandwiched between the adjoining surfaces of the casings for absorbing dimensional tolerances of the casings, cam plate and thrust bearings according to the deformation of the member.
摘要:
A reciprocating piston type compressor having a cylinder block unit closed, at at least one of the axial ends thereof, by a housing having a central suction chamber and a discharge chamber arranged around the suction chamber hermetically isolated by a separation wall integral with the housing, a valve plate interposed between the end of the cylinder block unit and the housing and having suction and discharge ports, suction passageways formed in the cylinder block unit to have fluid communication with the suction chamber via openings thereof, a plurality of pressing ribs axially integrally extending from an inner face of the housing toward the valve plate so as to apply a higher pressure to the valve plate at positions of the valve plate between respective two neighboring openings of the suction passageways in cooperation with the separating wall to prevent deformation of the valve plate due to the high pressure of the refrigerant in the respective cylinder bores whereby the hermetic seal between the valve plate and the end of the cylinder block is ensured.
摘要:
A compressor includes a housing body and a drive shaft rotatably supported in the housing body. A swash plate is mounted on the swash shaft. Cylinder bores are defined in the housing body. Pistons are operably coupled to the swash plate and are disposed in the cylinder bores. The swash plate converts a rotation of the swash shaft to a reciprocating movement of the pistons along an inner surface of the cylinder bores. Each piston compresses gas supplied from a suction chamber to the associated cylinder bore and discharges the compressed gas to a discharge chamber. Deformation of the inner surface of each cylinder bore is reduced by utilizing pressure of the gas compressed in the cylinder bore.
摘要:
A compressor comprises a suction passage; an oil reservoir for storing a lubricating oil which is separated from a refrigerant gas having a discharge pressure; and a throttle valve provided in the suction passage and having a valve body for adjusting an opening degree of the suction passage based on a differential pressure applied to the valve body. The suction passage has an upstream suction passage which is located upstream of the throttle valve. The compressor comprises a lubricating oil passage connecting the oil reservoir to the upstream suction passage for the lubricating oil in the oil reservoir to flow to the upstream suction passage therethrough.
摘要:
A refrigerant gas compressor includes a cylinder block formed with plural cylinder bores, a first housing disposed at the one end of the cylinder block, a second housing disposed at the other end of the cylinder block, a drive shaft supported by the cylinder block and one of the housings, a crank chamber formed in one of the housings, a suction chamber and a discharge chamber formed in one of the housings, a valve plate assembly disposed between the cylinder block and at least one of the housings, a stepped portion formed adjacent to the valve plate assembly to receive a part of the valve plate assembly. A storage chamber is provided for reserving therein oil separated from refrigerant gas. An oil groove is formed by the stepped portion and the valve plate assembly and connecting the storage chamber with one of the crank chamber and the suction chamber.
摘要:
The compressor is provided with an oil separator for separating oil from refrigerant gas introduced into a separation chamber, an annular space for reserving oil separated from the refrigerant gas, and a reservoir chamber for reserving the thus separated oil. The oil separator is provided in a cylindrical hole formed in a discharge chamber from which the refrigerant gas is discharged and a lid for partitioning the cylindrical hole from the discharge chamber is provided in the cylindrical hole. The oil separator introduces the refrigerant gas from the discharge chamber to the separation chamber via the introduction passage. The annular space is provided around the lid and connected to the reservoir chamber via an oil passage. The reservoir chamber is connected to a crank chamber of a pressure lower than that in the discharge chamber.
摘要:
In a structure for oil recovery in a compressor for separating oil from refrigerant and supplying the separated oil into the compressor through an oil supply passage, the compressor includes a rotary shaft, a cylinder block having a plural cylinder bores, a cam member rotated integrally with the rotary shaft, a piston received in each cylinder bore being operable in conjunction with the rotation of the rotary shaft through the cam member, a suction port for allowing the refrigerant to be drawn from a suction-pressure region of the compressor to the corresponding cylinder bore, a discharge port for allowing the refrigerant to be discharged from the corresponding cylinder bore to a discharge-pressure region of the compressor, and a flexible reed valve for opening and closing one of the suction port and the discharge port. The oil supply passage is opened and closed in accordance with motion of the reed valve.
摘要:
A refrigerant compressor, for compressing a refrigerant gas and delivering the compressed refrigerant gas toward an external refrigerating system, which has at least a rear housing provided with a rear discharge chamber defined by a partition wall and a rear discharge valve assembly including a rear discharge valve element and a rear retainer element coated with a rubber material, the partition wall having an endmost first end surface holding a base portion of the rear discharge valve element and a base end portion of the rear retainer element, a tapered surface portion extending toward a rear direction from the endmost first end surface, and a second end surface extending from the rear end of the tapered side surface to be parallel with the first end surface, the tapered surface portion and the second end surface defining a cavity and a support portion to prevent an uncontrolled deformation of controlling portions of the retainer element which control an amount of opening of the valve portions of the rear discharge valve element.