Assembly of screws for a screw compressor for a utility vehicle

A compressor and screw-type technology, which is applied in the field of screw components, can solve the problems of increasing the total amount of oil and increasing the inertia of the system, and achieve the effect of improving the sealing effect

Inactive Publication Date: 2019-05-21
KNORR-BREMSE SYST FUER NUTZFAHRZEUGE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Furthermore, the outer volume must be filled with oil, so that the total amount of oil also increases
As a result, the inertia of the system increases
In addition, the oil cooler must be mounted and fastened mechanically either by means of a surrounding holding device or by means of a separate holding device, which requires additional fastening means but also requires installation space

Method used

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  • Assembly of screws for a screw compressor for a utility vehicle
  • Assembly of screws for a screw compressor for a utility vehicle

Examples

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Embodiment Construction

[0022] figure 1 The screw compressor 10 is shown as an embodiment of the invention in a schematic cross-sectional view.

[0023] The screw compressor 10 has a fixing flange 12 for mechanically fixing the screw compressor 10 to an electric motor not shown further here.

[0024] However, the input shaft 14 is shown, through which the torque is transmitted from the electric motor to one of the two screws 16 and 18, namely to the screw 16.

[0025] The screw 18 meshes with the screw 16 and is driven by the screw 16.

[0026] The screw compressor 10 has a housing 20 in which main components of the screw compressor 10 are accommodated.

[0027] The housing 20 is filled with oil 22.

[0028] On the air input side, an inlet nozzle 24 is provided on the housing 20 of the screw compressor 10. The inlet port 24 is here configured such that the air filter 26 is arranged on the inlet port. In addition, an air inlet 28 is provided on the air inlet connector 24 in the radial direction.

[0029] In the...

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Abstract

The present invention relates to an assembly of screws (16, 18) for a screw compressor for a utility vehicle. The assembly includes at least one female screw (16) and at least one male screw (18), wherein the female screw (16) and the male screw (18) each have teeth (100, 102) that engage with one another, and the teeth (100) of the female screw (16) have a roll-off tooth flank (106) which is provided for rolling-off a tooth flank (108) of the male screw (18), the roll-off tooth flank (106) has a convexly rounded roll-off tip region (112) in the tip region (110), which has a first radius (R1),a tooth base (114) is provided between two neighbouring teeth (100) of the female screw (16), which is connected to the roll-off tip region (112) via a flat transition region (116), and the tooth base (114) between two teeth (100) of the female screw (16) is substantially concavely rounded and has a second radius (R2), and the second radius (R2) is about 2.5 to 3.5 times greater than the first radius (R1).

Description

Technical field [0001] The invention relates to a screw assembly of a screw compressor for a commercial vehicle, which comprises at least one female screw and at least one male screw. Background technique [0002] Screw compressors for commercial vehicles are known from the prior art. Such a screw compressor is used in order to provide compressed air required for, for example, a commercial vehicle brake system. [0003] In this connection, especially oil-filled compressors, especially screw compressors, are known, in which the task is to adjust the oil temperature. This is usually achieved by providing an external oil cooler, which is connected to the oil-filled compressor and the oil circuit through a thermostatic valve. Here, the oil cooler is a heat exchanger with two separate circuits, wherein the first circuit is provided for hot liquid, that is, compressor oil, and the second circuit is provided for cooling liquid . As the cooling liquid, for example, air, a water mixture...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01C21/08F04C18/16
CPCF01C21/08F04C18/16F04C18/084F05B2210/16F05B2210/12F05B2240/20F04C2210/1005F04C2210/221F04C2240/20B60T17/02F04C18/20F04C29/04F04C2250/20
Inventor G·埃布拉尔J-B·马雷斯科J·梅拉尔T·魏因霍尔德
Owner KNORR-BREMSE SYST FUER NUTZFAHRZEUGE GMBH
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