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Orbital pump

A technology of rails and components, applied in the direction of pumps, pump components, pump control, etc.

Active Publication Date: 2021-09-21
EDWARDS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While such anti-rotation devices exist, they all have their own drawbacks

Method used

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  • Orbital pump
  • Orbital pump

Examples

Experimental program
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Embodiment Construction

[0041] Before discussing the embodiments in more detail, an overview will first be provided. Embodiments provide a mechanism that mechanically prevents moving parts of an orbital pump or compressor from moving beyond their intended path, which would otherwise cause the parts to touch, resulting in damage to the pump or compressor. The mechanism has two parts, one part is attached to one of the parts and the other part is attached to the other part. One portion extends into an opening in the other portion. When excessive movement occurs, the parts contact each other and further movement of the parts is mechanically prevented. Additionally, contact between the parts can complete an electrical circuit that cuts power to the pump motor causing it to stop, preventing further damage.

[0042] Embodiments can be applied to both common orbital pumps or compressors, such as scroll pump or compressor configurations: Type 1, where one scroll is stationary and the other orbits; and Type...

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PUM

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Abstract

Orbital pumps or compressors are disclosed. A safety device for an orbital pump has first and second interleaved parts which are operable to follow an orbital path with respect to each other, the safety device comprising: a first member fixable with respect to the first interleaved part; and a second member fixable with respect to the second interleaved part, the second member defining an aperture into which the first member is receivable, the aperture being dimensioned to prevent movement of the first interleaved part with respect to the second interleaved part beyond the orbital path. In this way, the members of the safety device help to prevent the moving components of the pump contacting, thereby preventing damage.

Description

technical field [0001] The technical field of the invention relates to orbital pumps or compressors. Background technique [0002] An orbital pump or compressor is a pump or compressor formed by two interleaved scrolls, one of which has an orbital motion relative to the other, trapping and pumping or compressing between the scrolls Fluid pockets. In some cases, one of the scrolls is fixed while the other is mounted on an eccentric drive shaft so that it orbits eccentrically without rotating. Another way of producing relative orbiting motion is by having the scrolls co-rotate in synchronous motion but with offset axes of rotation. Thus, in this case, the two scrolls are mounted on parallel shafts and move relative to each other as if one were orbiting while the other was stationary. [0003] In the case of fixed scrolls and orbiting scrolls, anti-rotation devices may be used which are connected to the scrolls to resist relative rotation between them and thus allow accurate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C29/00
CPCF04C18/0215F04C29/0057F04C14/28F04C28/28F04C2240/81F04C2/025F04C2240/10F04C2240/20F04C2270/70
Inventor P·A·麦克布赖恩
Owner EDWARDS LTD