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Compact dry-running piston compressor

A piston type, compressor technology, applied in the direction of liquid variable capacity machinery, mechanical equipment, variable capacity pump components, etc., can solve the problem of increasing the position requirement of the structural unit, achieve the required quantity optimization, improve the cooling effect, Efficient cooling effect

Inactive Publication Date: 2012-02-01
KNORR-BREMSE SYST FUER NUTZFAHRZEUGE GMBH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To prevent this, additional packaging of the piston compressor together with the electric motor has hitherto been carried out, but this significantly increases the space requirements of the structural unit

Method used

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  • Compact dry-running piston compressor
  • Compact dry-running piston compressor
  • Compact dry-running piston compressor

Examples

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Embodiment Construction

[0020] in accordance with figure 1 , the compressor has a single cylinder 1 in which a piston 2 is arranged for compressing compressed air drawn from the environment through the cylinder head 3 . The linear working movement of the piston 2 is produced by a crank drive, which essentially consists of a crankshaft 4 together with a connecting rod 5 . The crankshaft 4 is mounted rotatably relative to the compressor housing 7 via two rolling bearings 6 a and 6 b.

[0021] The compressor housing 7 consists of a first housing half 8 forming the crankcase and a second housing half 9 accommodating the electric motor 10 .

[0022] The electric motor 10 is designed as a brushless motor in this exemplary embodiment and comprises a stator 11 composed of coil windings with an iron core, which interacts with a rotor 12 equipped with permanent magnets. The rotor 12 of the electric motor 10 is screwed onto the conical end of the crankshaft 4 , which protrudes into the second housing half 9 ....

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Abstract

The invention relates to a compact dry-running piston compressor with at least one cylinder for compressing air by means of an associated piston which can be moved via an electric motor via a crank drive consisting of a crankshaft and a connecting rod, the crank The transmission is mounted rotatably by means of continuously lubricated roller bearings in an oil-sink-free compressor housing and generates a cooling air flow inside the housing due to the movement cycle, which consists of two housings separated by a partition In order to house the crank drive inside the first housing half and the electric motor inside the second housing half, a rolling bearing common to both the crank drive and the motor is installed in the bulkhead, which is located through the first housing half. In the cooling air flow of the casing half, in addition to the rolling bearings arranged in the partition, the crankshaft is rotatably supported by an additional rolling bearing towards the other side, and the rotor of the electric motor is supported by the two rolling bearings of the crankshaft.

Description

technical field [0001] The invention relates to a compact dry-running piston compressor, in particular for commercial vehicles. Background technique [0002] The field of application of the invention extends in particular to rail vehicles as well as commercial vehicles. A small electric motor-driven unit is used here as an auxiliary compressor, which generates compressed air for consumers inside the vehicle. In the past mainly oil-lubricated piston compressors were used for this purpose. The new compressor concept based on piston compressors also allows oil-free operation. Instead of oiling the crankcase, the bearing points of the crank gear are here rolling-mounted and the rolling bearings are provided with local continuous lubrication. Oil-free reciprocating compressors have been developed especially for reasons of maintenance and environmental protection. [0003] DE 10 2004 042 944 A1 discloses a dry-running piston compressor of the same type. The piston compressor ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B39/06F04B39/12
CPCF04B39/06F04B39/128F04B39/121
Inventor J·梅拉尔M·哈特尔
Owner KNORR-BREMSE SYST FUER NUTZFAHRZEUGE GMBH
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