Abstract: A system includes a refrigerant compressor and an electronic control device therefor. The compressor includes a drive unit and a compression mechanism drivable thereby having a crankshaft-drivable piston. The control device captures and controls, in an open- and/or closed-loop manner, the crankshaft rotational speed and at least approximately captures the piston position.

Abstract: Refrigerant compressor includes an electrical drive unit, a piston/cylinder unit which can be driven by the drive unit for the cyclical compression of refrigerant, and at least one sound-damping unit made of a thermoplastic, through which sound-damping unit refrigerant can flow and which sound-damping unit includes at least one damping chamber. The at least one sound-damping unit is connected to the piston/cylinder unit in order to enable an exchange of refrigerant between the sound-damping unit and piston/cylinder unit. The at least one sound-damping unit includes at least in sections a functional surface. The functional surface is embodied such that an emissivity of a section of the sound-damping unit includes the functional surface is less than 0.7. The at least one sound-damping unit or at least one of the sound-damping units is embodied as a discharge muffler arranged downstream of the piston/cylinder unit in the direction of flow.

Abstract: Electronic control device for a refrigerant compressor, comprising at least one drive unit and a compression mechanism which is in operative connection with the drive unit and has at least one piston which, in an operating state of the refrigerant compressor, moves back and forth in a cylinder of a cylinder block of the refrigerant compressor for the operational compression of refrigerant and is driven by a crankshaft of the drive unit, wherein the electronic control device of the refrigerant compressor is at least designed to detect at least one physical process parameter, preferably the rotational speed (n) of the crankshaft or the power consumption of the refrigerant compressor, and to detect a switch-off signal directed at the refrigerant compressor, said switch-off signal terminating a refrigerant compressor operating phase in which the refrigerant compressor is operated as intended with a positive operating torque; and is also designed to regulate a torque applied by the drive unit to the crankshaft so

Abstract: The invention relates to a discharge silencer (6) for a hermetically encapsulated refrigerant compressor (1), which comprises a piston/cylinder unit (4) that compresses a refrigerant and has a compression chamber (3) and which is enclosed by a hermetically sealed compressor housing (2), wherein the compression chamber (3) is supplied with refrigerant coming from an evaporator through a suction silencer (5) and discharges refrigerant compressed by the piston/cylinder unit (4) into a pressure line (7a, b) through the discharge silencer (6). According to the invention, the discharge silencer (6) comprises a main body (8), on which an inlet flange (9) for the refrigerant coming from the piston/cylinder unit (4) is arranged, and an outlet channel (10), through which the refrigerant can be led into a pressure line (7a, b) that supplies a condenser with compressed refrigerant.

Abstract: A coolant compressor (1), comprising a piston-cylinder unit (2) that compresses a coolant, said piston-cylinder unit comprising a cylinder housing (4) and a piston (3) held in a piston bore (5) of the cylinder housing (4), wherein the cylinder housing (4) is sealed in an axial direction by a valve plate (6) and a cylinder cover (7). In order to facilitate the simple and flexible mounting of the valve plate (6) at the cylinder housing (4), it is provided according to the invention that the valve plate (6) is countersunk in its operating position in the piston bore (5) of the cylinder housing (4) and is fastened in the piston bore (5) of the cylinder housing (4) by way of a material bond connection, so that an end stop provided especially for the valve plate (6) in the cylinder housing (4) can be omitted.

Abstract: Refrigerant compressor for a hermetically encapsulated small refrigerator, which has a piston (20) guided in a piston bore (3) of a cylinder housing (1), the cylinder housing being frontally terminated using a valve plate (7) having a pressure opening (17) and a suction opening (16) and also being frontally provided with holes (5), which each have a thread.

Abstract: A coolant compressor (1), comprising a piston-cylinder unit (2) that compresses a coolant, said piston-cylinder unit comprising a cylinder housing (4) and a piston (3) held in a piston bore (5) of the cylinder housing (4), wherein the cylinder housing (4) is sealed in an axial direction by a valve plate (6) and a cylinder cover (7). In order to facilitate the simple and flexible mounting of the valve plate (6) at the cylinder housing (4), it is provided according to the invention that the valve plate (6) is countersunk in its operating position in the piston bore (5) of the cylinder housing (4) and is fastened at the cylinder housing (4) or in the piston bore (5) by way of a material bond connection.

Abstract: Refrigerant compressor for a hermetically encapsulated small refrigerator, which has a piston (20) guided in a piston bore (3) of a cylinder housing (1), the cylinder housing being frontally terminated using a valve plate (7) having a pressure opening (17) and a suction opening (16) and also being frontally provided with holes (5), which each have a thread.

Abstract: A refrigerant compressor has a hermetically tight compressor housing inside of which a piston-cylinder unit operates. A suction muffler through which refrigerant flows to the intake valve of the piston-cylinder unit is provided on the cylinder head. The inlet of the suction muffler has a cross section via which refrigerant flows into the suction muffler. A compensating volume is provided inside of which refrigerant oscillates and which is connected to the suction muffler and the interior of the compressor housing. The cross section of the inlet also acts as the connecting port between the compensating volume and the filling volume. The compensating volume is formed by an outer tube directed into the compressor housing, which tightly surrounds the intake port of the inlet while surrounding the section of the refrigerant suction pipe that is connected to the evaporator of the compressor and extends into the interior of the compressor housing.

Abstract: A hermetically encapsulated refrigerant compressor having a hermetically sealed compressor housing, in whose interior a piston-cylinder unit operates, whose cylinder housing (1) is closed using a valve plate (2) having a pressure hole (10) and a suction hole (16), and a suction channel and a pressure channel are provided. Preferably V-shaped sealing beads (23) or sealing projections (22) are provided in the valve plate (2) and the front face of the component (9) forming the suction channel is equipped along its suction contact edge (17) with sealing projections (22) or sealing beads (23) essentially corresponding to the V-shaped sealing beads (23) or sealing projections (22), the sealing projections (22) being implemented differently from the sealing beads (23) in their geometrical design and/or having a different volume.

Abstract: The invention relates to a hermetically encapsulated refrigeration compressor comprising a hermetically sealed compressor housing containing a piston-cylinder unit compressing a refrigerating agent. The cylinder is closed by means of a valve plate comprising a pressure borehole and a suction borehole, and a suction channel and a pressure channel are used to suck the refrigerating agent into the suction borehole by means of a suction valve, and to compress the refrigerating agent passing from the pressure borehole into the pressure channel by means of a pressure valve. Preferably, a suction sound absorber is arranged in the suction channel. The aim of the invention is to create one such refrigeration compressor that enables a significant decrease in the suction temperature and the exhaust temperature.

Abstract: A housing, preferably a hermetically sealing housing (1), a small-type refrigerating machine for receiving an electromotor and a piston-cylinder unit driven by the same for compressing a refrigerant guided via feed lines and discharge lines into the housing (1) and into the piston of the piston-cylinder unit, with the housing (1) being provided with at least one connecting element (6, 7, 8, 9, 15) for fastening to a support plate (5, 10, 14). It is provided in accordance with the invention that in a direction of view perpendicular to the support plate (5, 10, 14) the outermost dimensions of the housing (1) protrude beyond the outermost dimensions of the at least one connecting element (6, 7, 8, 9, 15), and the at least one connecting element (6, 7, 8, 9, 15) or its imaginary shortest connecting line along the surface of the housing (1) encloses a surface area of the housing (1) facing the support plate (5, 10, 14).

Abstract: Disclosed is a compressor for hermetically sealed small refrigeration machines. Said compressor comprises a cylinder with a cylinder housing (4) and a piston that is guided in the piston bore of the cylinder and is used for compressing a working medium, the cylinder being closed in an axial direction by means of a cylinder head (1). According to the invention, a fastening element (2, 24, 25) is provided which fixes the cylinder head (1) to the cylinder housing (4) using contact pressure that is applied in the area of the axis of the piston bore. Said fastening element can be embodied as a clamp (2), a locking clip (24), or an elastically bendable fastening means (25) such as a rope (25). The clamp (2) can be provided with a base part (5) and lateral parts (6), for example, the base part (5) being disposed in front of the cylinder head (1) in an axial direction.

Abstract: Disclosed is a hermetically enclosed refrigerant compressor comprising a hermetically tight compressor housing (1) inside which a piston-cylinder unit compressing refrigerant operates with an intake valve that is provided with an intake port (24) located in a valve plate (11) of the piston-cylinder unit. A suction muffler (16) which encompasses a certain filling volume (20) and via which refrigerant flows to the intake valve of the piston-cylinder unit is provided on the cylinder head (15) of the piston-cylinder unit. The inlet of said suction muffler (16) has a cross section (18) via which refrigerant flows into the suction muffler (16) while a compensating volume (21) is provided inside which refrigerant oscillates and which is connected to the suction muffler (16) and the interior of the compressor housing (1). The cross section (18) of the inlet also acts as the connecting port (26) between the compensating volume (21) and the filling volume (20).