Abstract: The invention relates to a piston compressor, particularly a hermetically enclosed refrigerant compressor, with a crank drive, having a crank shaft with an eccentric crank pin and an oil channel arrangement, and a connecting rod with a first piston-side connecting rod eye and a second pin-side connecting rod eye, said eyes having between them a connecting rod shank with a longitudinal channel, which opens into the connecting rod eyes. In this compressor, it is endeavoured to improve the lubricating conditions. For this purpose a bearing element is arranged between the crank pin and the second connecting rod eye, which is unrotatably connected with the second connecting rod eye under formation of an oil channel, the longitudinal channel communicating with the oil channel and a control arrangement being provided, which ensures a communication between the oil channel and the oil channel arrangement at least once per rotation of the crank pin.

Abstract: The invention concerns a cylinder head arrangement for a piston compressor, particularly a hermetically enclosed refrigerant compressor, with a suction muffler and a valve package having a valve plate, at least one suction valve and at least one discharge valve. It is endeavoured to simplify the assembly. For this purpose, the suction muffler has a housing, in which the valve package is adopted, the housing having positioning means, which determine the position of the valve package in the housing.

Abstract: The invention relates to a piston compressor, particularly a hermetically enclosed refrigerant compressor, with a crankshaft, which is axially supported in an axial bearing in relation to a bearing housing, and with an oil pump arrangement. In a piston compressor of this kind, it is endeavored to improve the lubricating properties. For this purpose, an oil distribution channel extending in the circumferential direction is arranged in the axial bearing between the crankshaft and the bearing housing, a control arrangement being arranged between the oil pump arrangement and the oil distribution channel, which control arrangement connects the oil pump arrangement with the oil distribution channel for a predetermined, short period, at least once during each rotation of the crankshaft.

Abstract: The invention concerns a piston compressor, particularly a hermetically enclosed piston compressor, with a housing, in which a motor is arranged, the motor having a crankshaft with a vertically standing crank pin that has in its upper front side an opening, which is connected with an oil supply arrangement. It is endeavored to reduce an external oil circulation. For this purpose, the opening is provided with a limiting arrangement, which limits an axially directed movement of lubricating oil from the opening to a predetermined area.

Abstract: The invention concerns a piston compressor, particularly a hermetically enclosed refrigerant compressor, with at least one cylinder a piston reciprocating in said cylinder, the piston being connected with a driving rod via a piston pin and having in its outer jacket surface a circumferential lubrication groove, the piston pin having a longitudinal bore, which is connected with a lubricant source. It is endeavoured to improve the lubrication. For this purpose, the longitudinal bore is open downward in the gravity direction and has a ventilation opening upward.

Abstract: The invention relates to a refrigerant compressor comprising at least one piston-cylinder unit and one valve plate that has at least one outlet opening. The piston has a projection which projects into the outlet opening when the piston is located near the upper dead center thereof. The aim of the invention is to increase the efficiency and to reduce the noise level. To these ends, the invention provides that the outlet opening, piston projection, valve plate and piston delimit a flow channel, and provides that the free cross-sectional area of the flow channel is determined by the smallest cross-sectional area of the outlet opening until the piston, during its pressure stroke at least the height (H) of the outlet opening, is located underneath the upper dead center.

Abstract: The invention concerns a piston compressor, particularly a hermetically enclosed piston compressor, with a housing, in which a motor is arranged, the motor having a crankshaft with a vertically standing crank pin that has in its upper front side an opening, which is connected with an oil supply arrangement.

Abstract: The invention concerns a refrigerant compressor with a cylinder block (1), a valve plate (4), a pipe connectable or connected with a suction muffler, a cover (2) covering the valve plate (4), a first sealing (3) between cover and valve plate and a second sealing (5) between valve plate and cylinder block. On assembling the refrigerant compressor it should be provided that the flow resistance of the suction gas is reduced as much as possible. For this purpose, each of the following pairs of members, cover. (2) and pipe (29), pipe (29) and valve plate (4) and valve plate (4) and cylinder block (1), has an alignment device for its members with at least two guiding elements, and that the members (2, 29, 4, 1) are assembled in a direction, which is substantially parallel to the guiding elements.

Abstract: The invention relates to a piston compressor, particularly a hermetically enclosed refrigerant compressor, with a crankshaft, which is axially supported in an axial bearing in relation to a bearing housing, and with an oil pump arrangement.

Abstract: The invention relates to a piston compressor, particularly a hermetically enclosed refrigerant compressor, with a crank drive, having a crank shaft with an eccentric crank pin and an oil channel arrangement, and a connecting rod with a first piston-side connecting rod eye and a second pin-side connecting rod eye, said eyes having between them a connecting rod shank with a longitudinal channel, which opens into the connecting rod eyes.

Abstract: The invention concerns a refrigerant compressor with a cylinder block (1), a valve plate (4), a pipe connectable or connected with a suction muffler, a cover (2) covering the valve plate (4), a first sealing (3) between cover and valve plate and a second sealing (5) between valve plate and cylinder block.

Abstract: A suction sound damper for a hermetically encapsulated compressor has a housing that is formed of at least an upper part (3), a lower part (1) and an insert (2), and having at least two chambers (7, 8) and a channel (9), connected thereto, leading from a lower inlet opening (10) to an upper outlet opening (11). The insert (2) has a side wall (18) which, together with a section (19) of the housing wall, forms a capillary gap (20) in which lubricating oil collects and is retained. This produces additional sound damping.

Abstract: The invention concerns a refrigerant compressor with a cylinder block (1), a valve plate (4), a pipe connectable or connected with a suction muffler, a cover (2) covering the valve plate (4), a first sealing (3) between cover and valve plate and a second sealing (5) between valve plate and cylinder block. On assembling the refrigerant compressor it should be provided that the flow resistance of the suction gas is reduced as much as possible. For this purpose, each of the following pairs of members, cover (2) and pipe (29), pipe (29) and valve plate (4) and valve plate (4) and cylinder block (1), has an alignment device for its members with at least two guiding elements, and that the members (2, 29, 4, 1) are assembled in a direction, which is substantially parallel to the guiding elements.

Abstract: A suction gas conduit (1) for a refrigeration compressor has a curved section (4) of the gas path (2), which connects an inlet section (3) of the gas path to an outlet section (5). A widening (11) in the form of a step (12) is located on the inner side of the curve of the gas path. The curved section (4) especially abuts, at the outlet end, a valve plate (7) of the compressor, which valve plate (7) has a suction gas opening (6). The outer side of the curve of the gas path (2) is unimpeded. The step height (H) is from 0.3 to 1.0 times, and the step length (L) from 0.2 to 1.0 times, the hydraulic diameter (d) of the outlet section (5). As a result thereof, the unavoidable recirculation flow is located in a position where its undesirable effect is limited.

Abstract: A suction sound damper for a refrigerant compressor is disclosed, having an inlet, which is arranged to be connected to a suction port, and an outlet, which is arranged to be connected to the refrigerant compressor, and also having at least one damping volume. It is desirable for a suction sound damper of that kind to be of simple and inexpensive construction, and to contribute to increasing the efficiency of a refrigerant compressor. For that purpose, it is formed from a first and second half which define an internal space in which the damping volume is arranged, the first half having projecting into the internal space a gas deflection wall which, at least over sections thereof, forms a lateral limitation of a flow path free from throttle points between inlet and outlet.

Abstract: A suction valve for an axial piston compressor has a leaf spring fixed at one end, which spring at one end is fixed with a fixed portion between valve plate and cylinder block, at its other end covers over the suction valve opening with a closure portion and has an intermediate portion connecting these portions. The intermediate portion is located substantially outside the cylinder cross-section. A stop for the suction valve leaf spring is arranged in the region of the cylinder wall facing the fixed portion. This produces an optimum filling of the cylinder and thus an improvement in the efficiency of the compressor, as is especially desirable for refrigeration compressors.

Abstract: A refrigerant compressor has a reciprocating piston with a projection extending therefrom is disposed in a cylinder. The cylinder has an end wall with a discharge opening operably closeable by a discharge valve. The projection is disposed on an end face of the piston and extends into the opening of the discharge valve when the piston is in the region of its end position. Extending the projection into the discharge valve enables gas remaining in the region above the piston and in the region of the discharge opening to be displaced out of the discharge valve. The projection has an asymmetrical construction with a circumferential wall has a gradient changing along the circumference of the wall. The discharge valve seat and the flow channel in the region of the discharge valve are operably contoured to prevent turbulent flow from occurring when gas is discharged from the discharge valve.

Abstract: A refrigerant compressor arrangement is disclosed, having a compressor which is arranged in a housing and which has a suction connection, the housing being provided with a suction connector which is joined to the suction connection by way of a suction channel. In such an arrangement, it is desirable to increase the opportunity of the compressor to move, that is, to reduce noise, without at the same time having to accept a deterioration in efficiency. To that end, at its housing end the suction channel is in the form of a telescope tube which is capable of being telescoped into the suction connector.