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Blade machine having elastically and hydraulically pressed blades

A blade and machine technology, applied in the field of blade machines, can solve the problems of not being able to let in there and having no space for the rear wing, and achieve the effect of simplifying the supply

Active Publication Date: 2017-01-18
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the rear wing space is not closed in a fluid-tight manner, so that an increased fluid pressure cannot act there on the blade in order to press the blade against the bending ring with increased force.
Therefore, the last mentioned blade machines can only be operated with small operating pressures

Method used

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  • Blade machine having elastically and hydraulically pressed blades
  • Blade machine having elastically and hydraulically pressed blades
  • Blade machine having elastically and hydraulically pressed blades

Examples

Experimental program
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Embodiment Construction

[0026] figure 1 A longitudinal section through a vane machine 10 according to the invention is shown. The vane machine 10 has a housing 11 with a fluid inlet line 14 and a fluid outlet line 13 . The vane machine 10 is currently configured as a vane pump, so that pressurized fluid is fed from a fluid input line 14 into a fluid output line 13 , wherein the pressurized fluid is put under pressure. The fluid outlet line 13 thus forms the pressure medium source 12 . The pressure fluid is preferably a liquid, very preferably hydraulic oil.

[0027] A rotor 20 is accommodated rotatably about an axis of rotation 21 in the housing 11 . The rotor 20 is connected in a rotationally fixed manner about an axis of rotation 21 to a separate drive shaft 15 , which protrudes from the housing so that, for example, it can be brought into a rotational drive connection with an electric motor. The rotational mounting of the rotor 20 takes place, for example, via plain bearings on the drive shaft...

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PUM

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Abstract

The invention relates to a blade machine (10). The blade machine (10) has a rotor (20) which can rotate about a rotation axis (21) and a bending ring (50) which encloses the rotor (20). The rotor (20) can movably accommodate a plurality of plate-shaped blades (40) in a radial direction (22). Each blade (40) and the rotor (20) correspondingly limit one rear wing space (23) assigned. The rear wing spaces (23) can be connected to a pressure medium source (12), such that the rear wing spaces can hydraulically extrude the blades (40) towards the internal circumferential surface (55) of the bending ring (50). According to the invention, the rotor accommodates a spring ring (60) which extends around the rotation axis (21) in a loop. The spring ring attaches closely to all the blades (40) inside under a prestress, such that the blades are extruded towards the bending ring (50).

Description

technical field [0001] The invention relates to a vane machine according to the preamble of claim 1 . Background technique [0002] EP 1 141 551 B1 discloses a vane machine in which the vanes are pressed hydraulically against a bending ring in that the corresponding rear wing space can be connected to a pressure medium source. When the vane machine is configured as a vane pump, the fluid outlet line can be used as a pressure medium source during continuous operation. When starting the vane pump, however, a separate source of pressure medium, such as a gear pump, is required in order to provide the required fluid pressure. [0003] A vane machine is known from DE 19 34 41 A1, in which the vanes are pressed against a bending ring by means of pretensioned spring coils. However, the rear wing space is not closed in a fluid-tight manner, so that an increased fluid pressure cannot act there on the blade in order to press the blade against the bending ring with increased force. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C2/344
CPCF04C2/344F01C21/0845F01C21/0863F01C21/0872F04C2/3442
Inventor M.昂格J.弗里德里希S.朗
Owner ROBERT BOSCH GMBH