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Friction-Optimized Vacuum Orbiter Pump

A technology of aircraft and vacuum pump, which is applied to components of pumping devices for elastic fluid, rotary piston type/swing piston type pump components, pumps, etc., can solve serious problems and achieve the effect of improving frictional resistance

Inactive Publication Date: 2021-08-06
尼得科GPM有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These disadvantages are subject to fluctuating environmental conditions in mobile applications, especially in installations in the engine compartment of vehicles

Method used

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  • Friction-Optimized Vacuum Orbiter Pump
  • Friction-Optimized Vacuum Orbiter Pump
  • Friction-Optimized Vacuum Orbiter Pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0056] Such as figure 1 As shown, an orbiter vacuum pump according to an embodiment of the invention is formed by a pump housing 1 comprising a pump chamber 2 with cylindrical chamber walls. In the pump cavity 2, the orbiter eccentric piston 3 performs a circular movement, wherein the orbiter eccentric piston 3 is in circumferential sliding contact with the cavity wall. In the orbiter eccentric piston 3 there is provided a guide groove 4 in which a blocking slide 5 is slidably received. A blocking slide 5 extends through the pump cavity 2 into the orbiter eccentric piston 3 and is pivotally mounted at the free end. For this purpose, a pivot bearing 14 is provided in the cavity wall between the inlet opening 6 and the outlet opening 7 . The inlet of the pump has a nozzle for connecting a vacuum hose.

[0057] Depending on the position of the orbiter eccentric piston 3 in the circular movement in the pump chamber 2 , a part of the blocking slide 5 located opposite the pivotab...

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Abstract

The present invention relates to a dry-running, oil-free orbiter vacuum pump, on which a friction-optimized surface is provided on components. The dry-running orbiter vacuum pump comprises a pump housing (1) with a cylindrical pump chamber (2) and an orbiter eccentric piston (3) with a guide slot (4) and a cylindrical exterior surface, a cylindrical cross-section of the orbiter eccentric piston (3) being smaller than a cylindrical cross-section of the pump chamber (2). At at least one of a radial air gap (R) and an axial air gap (A) formed in the cylindrical pump chamber (2) between the orbiter eccentric piston (3) and the pump housing (1) at least one sliding surface (10, 20, 30) is arranged in a manner exposed to the air gap (R, A); wherein the at least one sliding surface (10, 20, 30) comprises a microstructure including cavities for decreasing an exposed surface of the at least one sliding surface (10, 20, 30).

Description

technical field [0001] The invention relates to a dry-running, oil-free orbiter vacuum pump, the components of which are provided with friction-optimized surfaces. Background technique [0002] Vacuum pumps are used to evacuate gaseous media, for example, for the purpose of creating a vacuum in brake boosters. In the automotive sector, further applications of dry-running vacuum pumps include, for example, exhaust gas recirculation valves, exhaust valves, pneumatic adjustment of guide vanes on turbochargers with variable turbine geometry, and by-pass charging pressure regulation via wastegates. The pneumatic adjustment of the road also includes the activation of the central locking system, or for opening and closing the headlight cover. In plant construction, dry-running vacuum pumps can often be used to generate negative pressure in electro-pneumatic valves or pneumatic actuators. [0003] Rotary displacement pumps, such as vane pumps or rotary vane pumps, are mainly used ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C18/46F04C18/344F04C29/02
CPCF04C18/46F04C18/3441F04C29/028F04C2240/10F04C2240/20F04C25/02F04C2230/92F04C2230/22F04C2220/12F04C18/332
Inventor 康拉德·尼克尔雅各布·施尼策尔弗朗茨·帕维勒克
Owner 尼得科GPM有限公司
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