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AssigneeBITZER Kuehlmaschinenbau GmbH
InventorsVolker Pollrich, Guenter Dittrich, Helmut Barowsky, Wolfgang Sandkoetter
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In order to improve a refrigerant compressor apparatus comprising a drive motor, a compressor driven by the drive motor and having several cylinders arranged in a V shape and a compressor shaft bearing eccentrics for driving pistons operating in the respective cylinders in such a manner that as smooth a running as possible can be achieved at any desired V angle it is suggested that the cylinders be arranged at a V angle of less than 90°, that the compressor shaft be mounted with only two bearing sections thereof in corresponding compressor shaft bearings, that the eccentrics be arranged between the bearing sections and that a separate eccentric be provided for each piston and be arranged at a distance from the other, individual eccentrics for the respectively other pistons.
Refrigerant compressor apparatus comprising a drive motor, a compressor driven by the drive motor and having several cylinders arranged in a V shape and a compressor shaft bearing eccentrics for driving pistons operating in the respective cylinders,
Refrigerant compressor apparatus as defined in any one of the preceding claims, characterized in that the compressor shaft (34) has a lubricant channel (70) coaxial to the axis of rotation (30).
Refrigerant compressor apparatus as defined in any one of the preceding claims, characterized in that the cylinders (112, 114, 122, 124) arranged in a V shape form with one another a V angle of less than 70°.
Refrigerant compressor apparatus as defined in any one of the preceding claims, characterized in that each of the eccentrics (60) is arranged in relation to the other eccentrics (60) so as to be turned through an angle with respect to an axis of rotation (30) of the compressor shaft (34).
Refrigerant compressor apparatus as defined in any one of the preceding claims, characterized in that the eccentrics (60) form pairs (601, 602;
Refrigerant compressor apparatus as defined in any one of the preceding claims, characterized in that the compressor (40) comprises at least four cylinders (112, 114, 122, 124) and that the compressor shaft (34) comprises at least four separate eccentrics (60) arranged at a distance from one another.
Refrigerant compressor apparatus as defined in any one of the preceding claims, characterized in that the drive motor (24) of the compressor (40) has the refrigerant flowing from the low pressure stage (120) to the high pressure stage (110) flowing through it.
Refrigerant compressor apparatus as defined in claim 26, characterized in that the control (200) regulates the temperature of the medium (206) to be cooled in a range above a minimum cooling capacity due to speed-controlled operation of the drive motor (24) free from running interruptions.
Refrigerant compressor apparatus as defined in any one of the preceding claims, characterized in that the control (200) controls the speed of the drive motor (24) in accordance with ambient temperature.
Dependencies are inferred from the claim text.