Driven Vane Compressor

a compressor and driven technology, applied in the direction of machines/engines, rotary/oscillating piston pump components, liquid fuel engines, etc., can solve the problems of increased fluid flow pressure loss in the inlet and outlet region, affecting the operation affecting the efficiency of such machines, so as to reduce the side load acting, less power consumption, and longer life

Inactive Publication Date: 2008-11-13
PARKER HANNIFIN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006]In contrast to the above-mentioned single vane and other rotary vane devices, the present invention provides a rotary vane device wherein the vane is rotatably driven rather than the rotor. This has been found to beneficially reduce the side load acting on the vane, essentially to whatever is the bearing drag acting on the rotor that is rotatably driven by the vane. Benefits arising from the invention include less power consumption, longer life, fewer stack-up tolerances between the vane and housing, the ability to use plastic for the rotor and vane due to the reduced loads, and / or fewer components.
[0010]The rotor slot may increase in width going from a radially outer end of the slot to a radially inner end of the slot, for accommodating relative pivotal movement of the vane relative to the side wall of the slot when the vane is rotatably driven about the pumping chamber axis.

Problems solved by technology

The operating efficiency of such machines, however, is negatively impacted by machine friction.
Friction in non-guided rotary vane machines can arise from the rubbing of the tip of the sliding vane against the inner contour of the stator wall.
This can result in increased fluid flow pressure losses in the inlet and outlet port regions.

Method used

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  • Driven Vane Compressor
  • Driven Vane Compressor
  • Driven Vane Compressor

Examples

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Embodiment Construction

[0027]Referring now to the drawings in detail, and initially to FIGS. 1-5, an exemplary rotary vane device according to the invention is designated generally by reference numeral 20. As shown, the device 20 generally comprises a housing 21, a rotor 22 (FIGS. 3 and 4) and a vane and drive assembly 23 (FIGS. 4 and 6). In the illustrated embodiment, the vane and drive assembly 23, as best seen in FIG. 6, comprises a single vane 26 mounted, or formed integrally with, a vane drive member 27. Although these components will be described below in greater detail, it will be appreciated that such components can vary in various respects without deviating from the basic principles of the present invention. In addition, the illustrated rotary vane device is particularly suited for use as a gas compressor and will be chiefly described in this context. A rotary vane device according to the invention, however, may be adapted for use with other fluids, in particular as a pump for liquids. Additional...

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PUM

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Abstract

A rotary vane device comprising a rotor and a vane positioned in a pumping chamber in a housing for rotation about respective eccentric axes, wherein the rotor has a rotor slot in which the vane is positioned, characterized by the vane being driven and the rotor following the vane.

Description

RELATED APPLICATIONS[0001]This application claims the benefit of U.S. Provisional Application No. 60 / 736,959 filed Nov. 15, 2005, which is hereby incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention relates to rotary vane machines and, more particularly, to a rotary vane machine wherein the vane is driven rather than the rotor.BACKGROUND OF THE INVENTION[0003]Rotary vane machines are distinguished from virtually all other fluid displacement machines in their remarkable simplicity. The operating efficiency of such machines, however, is negatively impacted by machine friction. Friction in non-guided rotary vane machines can arise from the rubbing of the tip of the sliding vane against the inner contour of the stator wall. Governing the motion of the vane by the stator wall contour also can inhibit the area through which fluid can enter or exit the machine. This can result in increased fluid flow pressure losses in the inlet and outlet port regions.[0004]O...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F04C18/344
CPCF04C2/344
Inventor KNIGHT, STEVEN R.
Owner PARKER HANNIFIN CORP
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