Abstract:
In an axial piston pump, a plurality of reciprocating pistons are at least partially positioned within a barrel. The barrel includes a ring shaped high pressure collection cavity that is positioned between the piston chambers and the outlet of the pump. In order to minimize potential loses due to leakage from the ring shaped collection cavity, the barrel is made from a casting that utilizes a ring shaped core supported in a mold. This facilitates the formation of the ring shaped cavity while insuring location and dimensional tolerances, and assisting in the latter machining of the casting to its final form.
Abstract:
A single-headed piston (22) is accommodated within each of a plurality of cylinder bores (13) formed on a cylinder block (13). Shoes (23) are disposed between a swash plate (11) and each single-headed piston (22). The rotation force of the swash plate (11) is transmitted to the single-headed piston (22) via the shoes (23). Each single-headed piston (22) makes a reciprocating motion within the cylinder bore (131) accompanied by the rotation of the swash plate (11). A rotary shaft (16) fixed to the swash plate (11) is driven by a motor (21).
Abstract:
A variable delivery fixed displacement pump is provided which has a rotating drive plate with a fixed angle. The drive plate has a fill passage extending between its radial outer surface and its drive surface, which allows fluid to be supplied to a fluid journal bearing. The drive plate also has a series of bearing supply passages which fluidly connect the drive surface of the drive plate with a base surface, allowing fluid to be supplied to a fluid thrust bearing. A method of pumping fluid is also provided which is comprised of the steps of reciprocating a plurality of pistons at least in part by rotating the drive plate, and by fluidly connecting a pumping chamber of the pistons to an annular groove that is part of the drive plate fill passage.
Abstract:
A compressor for the air conditioning system of an automobile, having a housing and a compressor unit arranged in the housing for taking in and compressing a refrigerant. The refrigerant flows from an intake area through the compressor unit into a discharge area likewise formed in the housing cover, and the housing cover sealingly connects to the housing via connecting members. For reducing a load on the connecting members, the connecting area, through which the connecting members extend, is at least substantially separated from the pressure generated within the compressor.
Abstract:
In order for a high-pressure cleaner having a reciprocating pump, on which there is positioned a pump head into which at least one piston, which can be moved back and forth in the longitudinal direction of the reciprocating pump, projects, the pump head comprising a suction connection, for feeding a cleaning liquid, and a pressure connection, for discharging the cleaning liquid, accommodating a plurality of regulating valves, being produced from plastics and being braced with the reciprocating pump by means of a clamping element, to be developed such that it can be produced more cost-effectively and assembled more straightforwardly, it is proposed that the clamping element has at least one U-shaped clamping bracket with a base part butting against the pump head and with two legs which are aligned substantially in the longitudinal direction of the reciprocating pump and the free ends of which butt against an abutment surface, produced from metal, of a piston guide of the reciprocating pump and can be connected releasably to the reciprocating pump.
Abstract:
A compressor for an air conditioning system in an automobile, having a housing (1) and a compressor unit (2) accommodated in the housing (1) for taking in and compressing a refrigerant. The refrigerant flows from an intake area (4) preferably in a front-end housing cover (3) through the compressor unit (2) into a discharge area (5), preferably likewise designed and constructed in the housing cover (3). The compressor is designed and constructed for promoting efficiency such that components coming into contact with the refrigerant, particularly the walls forming a flow path (6) between the intake area (4) and the discharge area (5) are thermally insulated against the refrigerant at least partially and in areas of contact. For an effective protection of the drive belt when the drive shaft or the compressor unit locks, the compressor is further designed and constructed such that a coupling device automatically disengages, when a defined thermal and/or mechanical load limit is exceeded.
Abstract:
A variable displacement swash plate type compressor which incorporates a swash plate slidably mounted on a drive shaft, the swash plate having side walls that taper toward one another for constant point contact with a ball bearing of an associated piston which results in a smaller required diameter for the swash plate and smoother operation of the compressor over prior art structures.
Abstract:
The piston type compressor of the present invention prevents high pressure refrigerant from leaking out of the compressor through the end face of the cylinder block and also prevents the degradation of the performance of the compressor due to the leakage of the refrigerant gas. The cylindrical wall (3a), which is placed radially outside the front coupling surface (F) formed by the front end face of the cylinder block (1) and the rear end face of the front housing (2), and the rear coupling surface (R) formed by the rear end face of the cylinder block (1) and the front end face of the rear housing (3), is formed integrally with the rear housing (3) and encloses the front coupling surface (F) and the rear coupling surface (R). The front end face of the cylindrical wall (3a) and the rear end face (20a) of the motor housing (20) are coupled together and a hermetic space is formed internally. The sealing ability at the front coupling surface (F) and the rear coupling surface (R) is improved and the high pressure refrigerant can be prevented from leaking out of the compressor through the front coupling surface (F) and the rear coupling surface (R).
Abstract:
A piston-type compressor includes a cylinder block having cylinder bores and a rear housing having a separating wall to divide the interior of the rear housing into a suction chamber and a discharge chamber. Pistons are arranged in the cylinder bores to reciprocate therein. Bolts are inserted in the cylinder block and extend into the separating wall of the rear housing to connect the cylinder block and the housing together. Since the separating wall is forced to the cylinder block by the bolts, no leakage occurs between the suction chamber and the discharge chamber.
Abstract:
A piston having anti-rotation for a swashplate compressor includes a body portion extending axially and a connecting portion spaced radially from a longitudinal axis of the body portion and extending axially. The piston also includes a pair of opposed anti-rotation wings extending radially from one end of the body portion between the connecting portion and the longitudinal axis of the body portion.