CO2 compressor
AssigneeLuk Fahrzeug-Hydraulik GmbH & Co. KG
InventorsJan Hinrichs, Peter Kuhn, Frank Obrist
Life of this patent
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Abstract
A CO2 compressor for an air conditioner of a motor vehicle is suggested having a sealing device, assigned to the driveshaft of the CO2 compressor, which is implemented as a sliding ring. The CO2 compressor features a lubrication device, in which the sealing device is supplied a lubricant flow effected by centrifugal forces.
Claims27
A CO2 compressor for an air conditioner of a motor vehicle having a sealing device, assigned to a driveshaft of the CO2 compressor, which is implemented as a sliding ring, comprising:
- a lubrication device structured to supply the sealing device with a lubricant flow effected by centrifugal forces, the sealing device including a sleeve enclosing a bearing seal ring having the sliding ring which rotates with the driveshaft and a driver device engaged with the sliding ring as part of a coupling device to couple the sliding ring with the driveshaft for rotation with the drvieshaft, the driver device comprising at least one axially-extending driver arm which engages in a depression formed in the sliding ring and at least one axially-extending tongue and a spring device which applies a prestressing force to the at least one tongue of the driver device, the lubrication device comprising a ring gap formed about said sleeve and being in fluid communication with the bearing ring seal and sliding ring via a sleeve inlet.
A CO2 compressor for an air conditioner of a motor vehicle comprising:
- a driveshaft;
- a sealing device disposed about the driveshaft so as to form a sliding ring, the sealing device comprising;
- a sleeve disposed about said sliding ring;
- a lubrication device providing a ring gap disposed about said sleeve and being in fluid communication with said sliding ring to provide a lubricant flow to said sliding ring effected by centrifugal forces, said ring gap further providing a cooling effect to said sleeve;
- a bearing seal ring having the sliding ring which rotates with the driveshaft;
- and
- a driver device engaged with the sliding ring as part of a coupling device to couple the sliding ring to the driveshaft for rotation with the driveshaft, the driver device comprising at least one axially-extending driver arm which engages a depression in the sliding ring and at least one axially-extending tongue subject to a prestressing force.
A method for forming a CO2 compressor having a driveshaft, and a sealing device, the method comprising:
- selecting the sealing device having a rotatable sliding ring and a driver device with at least one axially-extending tongue subject to a prestressing force provided by disposing a spring in the sealing device between the sliding ring and driver device to apply the prestressing force to the at least one tongue, said driver device having at least one drive arm axially-extending in a direction away from said at least one axially-extending tongue and engaged with a depression formed in said rotatable sliding ring to impart rotation to said rotatable sliding ring;
- providing a housing for said sealing device;
- and
- providing a lubrication device having a ring gap positioned about a sleeve that is disposed about said rotatable sliding ring, the ring gap supplying lubricant to the rotatable sliding ring and forming a lubricant flow by centrifugal force.
Dependencies are inferred from the claim text.