Dry-running piston compressor

A piston type and compressor technology, which is applied to the arrangement of pumps/compressors, liquid displacement machinery, mechanical equipment, etc., can solve the problems of damaged compressors, large size, and inability to provide running time of piston compressors, etc.

Inactive Publication Date: 2008-01-23
KNORR BREMSE SYST FUR SCHIENENFAHRZEUGE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the described bearing type not only fails to provide the operating times required for piston compressors in commercial vehicles due to the severe grease aging due to the increased reciprocating operation; the described bearing type is also very fast under satisfactory operating conditions. Cause bearing failure or damage to compressor
However, other bearing types with a lower lubricant load are dimensioned according to the above-mentioned criteria according to the prior art so large that the size of the crank linkage and especially the width of the crank linkage make it difficult for commercial vehicles. Use not possible in technically meaningful installation positions

Method used

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  • Dry-running piston compressor

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Embodiment Construction

[0030] According to FIG. 1 , a piston compressor 1 is arranged in a commercial vehicle or rail vehicle (not shown further here) between an engine 2 for driving the vehicle and a support frame 3 . The engine 2 used to drive the vehicle is also used to drive the piston compressor 1 .

[0031] The piston compressor 1 has a crankcase 4 on which a pot-shaped cylinder 5 is mounted via a screw connection (not shown further here). The pot-shaped cylinder 5 is provided with a cylinder head 6 through which, in a known manner, air is sucked in from the environment and the compressed air generated in the cylinder 5 is discharged via the integrated valve arrangement here.

[0032] A reciprocating piston 7 is provided in the cylinder 5 for generating compressed air. The piston 7 is mounted rotatably on a connecting rod 8 and is connected at the opposite end to the crankshaft 10 via a connecting rod bearing 9 .

[0033] In this exemplary embodiment, which corresponds to the prior art, the ...

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Abstract

The invention relates to a dry-running piston compressor comprising a crankcase (4), on which at least one pot-like cylinder (5) is mounted. This cylinder has an associated piston (7), which is located therein and which, by means of a connecting rod (8), is joined to a crankshaft (10) rotationally mounted inside the crankcase (4). The crankshaft-side end of the connecting rod (8) is mounted on the crankshaft (10) via a connecting rod bearing (9) provided in the form of an antifriction bearing. The connecting rod bearing (9) has a load index Bconnecting rod ranging from 2 to 6 that is obtained from the following formula: Bconnecting rod = Cdyn.[N] / (Apiston[mm2].pcompressor[N / mm2]), in which Cdyn represents the dynamic bearing rated load, Apiston represents the piston area, and pcompressor represents the nominal working pressure.

Description

technical field [0001] The invention relates to a dry-running piston compressor comprising a crankcase on which at least one pot-shaped cylinder is arranged with an associated internal piston, which is rotatable by means of a connecting rod The crankshaft is connected to a crankshaft ground-mounted in the crankcase, wherein the crankshaft-side end of the connecting rod is supported on the crankshaft via a connecting rod bearing designed as a roller bearing. Background technique [0002] The field of application of the invention extends in particular to the range of commercial vehicles and rail vehicles. A piston compressor is used here to generate the compressed air which is required in particular for the operation of the compressed air brake system. Oil-lubricated piston compressors have been mainly used until now in the field of commercial vehicles; however, the present invention relates to dry-running, ie oil-free piston compressors, which are particularly suitable for u...

Claims

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Application Information

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IPC IPC(8): F04B39/00B60T17/02
CPCF04B39/0022F04B39/0005
Inventor M·哈特尔
Owner KNORR BREMSE SYST FUR SCHIENENFAHRZEUGE GMBH
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