Piston compressor and method in which such a piston compressor is used
AssigneesAtlas Copco Airpower, Naamloze Vennootschap, Vrije Universiteit Brussel
InventorsBjörn Verrelst, Jarl Beckers
Life of this patent
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Abstract
A piston compressor, including at least one piston compressor element (3) that is provided with a housing (8) with a compression chamber (13) in which a piston (10) is arranged movably back and forth in an axial direction (X-X′) between an upper dead point and a lower dead point by means of a drive shaft (5) driven by a rotary motor (6), and in which between this drive shaft (5) and the piston (10), a kinematic transmission (20) is provided for the primary drive of the piston (10), wherein the piston (10) is provided with a complementary drive (25) in the form of an electromagnetic linear drive.
Claims19
A piston compressor, comprising at least one piston compressor element (3) that is provided with a housing (8) with a compression chamber (13) in which a piston (10) is arranged to move back and forth in an axial direction (X-X′) between an upper dead point and a lower dead point, the piston being driven by a drive shaft (5) driven by a rotary motor (6),
- wherein between the drive shaft (5) and the piston (10), a kinematic transmission (20) is provided as a primary drive of the piston (10),
- wherein the piston (10) is provided with a complementary drive (25) in the form of an electromagnetic linear drive,
- wherein the kinematic transmission (20) comprises a crank and rod mechanism (21-22), and
- wherein the piston compressor (1) is provided with a control (27) for determining a momentary position of a crank (21) of the crank and rod mechanism (21-22) and for activating the electromagnetic linear drive (25) at least during a part of a compression stroke of the piston (10) from the lower dead point to the upper dead point of the piston (10) based on the momentary position of the crank (21).
A method for compressing a gas by means of at least one piston compressor element (3) that is provided with a housing (8) with a compression chamber (13) in which a piston (10) is periodically moved back and forth in an axial direction (X-X′) between an upper dead point and a lower dead point by a drive shaft (5) driven by a rotary motor (6),
- wherein between the drive shaft (5) and the piston (10), a kinematic transmission (20) is provided as a primary drive of the piston (10),
- wherein the piston (10) is driven by means of a complementary drive (25) in the form of an electromagnetic linear drive during at least a part of the periodic back and forth movement of the piston,
- wherein the kinematic transmission (20) comprises a crank and rod mechanism (21-22), and
- wherein the piston compressor (1) is provided with a control (27) for determining a momentary position of a crank (21) of the crank and rod mechanism (21-22) and for activating the electromagnetic linear drive (25) at least during a part of a compression stroke of the piston (10) from the lower dead point to the upper dead point of the piston (10) based on the momentary position of the crank (21).
Dependencies are inferred from the claim text.