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Scroll compressor differential pressure control during compressor startup transitions

A scroll compressor and compressor technology, applied in compressors, machines/engines, irreversible cycle compressors, etc., can solve the problems of reducing the ability of steam flow and cooling capacity

Active Publication Date: 2014-08-20
VERTIV CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This reduces the cascade group's ability to move steam, which reduces cooling capacity

Method used

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  • Scroll compressor differential pressure control during compressor startup transitions
  • Scroll compressor differential pressure control during compressor startup transitions
  • Scroll compressor differential pressure control during compressor startup transitions

Examples

Experimental program
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Embodiment Construction

[0047] Exemplary embodiments will be described more fully with reference to the accompanying drawings.

[0048] Embodiments described below prevent undirected unloading of scroll compressors. The embodiment includes a technique of ensuring that each pressure ratio or pressure difference of each scroll compressor is maintained equal to or greater than a predetermined level. Pressure ratio refers to the ratio between the input pressure and the output pressure of one or more compressors. Pressure differential refers to the difference between the input pressure and the output pressure of one or more compressors. The predetermined level may be greater than or equal to a level associated with undirected unloading of an associated scroll compressor. Although the following techniques are primarily described with respect to pressure differentials, pressure ratios can be determined and used.

[0049] Techniques commonly used during the operation of cascade scroll compressors are dire...

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PUM

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Abstract

A method including: determining a cooling value; and comparing the cooling value to an activation point of a lead compressor. The lead compressor is in a tandem set of scroll compressors of a cooling system. The tandem set of compressors comprises a lag compressor. The method further includes: activating the lead compressor when the cooling value is greater than the activation point; activating the lag compressor subsequent to activating the lead compressor; and determining whether conditions exist including: an alarm associated with the lag compressor being generated, and the lead compressor being deactivated. The method further includes deactivating the lag compressor when at least one of the conditions exists in the cooling system.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Application No. 61 / 765,884, filed February 18, 2013. The entire disclosure of the above application is incorporated herein by reference. technical field [0003] The present disclosure relates to high efficiency cooling systems, and more particularly to pressure control systems. Background technique [0004] The background description provided herein is for the purpose of generally presenting the context of the disclosure. The work of the presently named inventors encompasses the work described in this Background section as well as aspects that would not otherwise meet the description as prior art at the time of filing the patent application, and the foregoing work is neither expressly nor impliedly admitted is prior art with respect to the present disclosure. [0005] The cooling system has applicability in a variety of applications where a fluid is to be cooled. ...

Claims

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Application Information

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IPC IPC(8): F04C28/02F04D27/00F24F11/00
CPCY02B30/741Y02B30/743F25B1/04F25B2600/0253F25B2700/2106F25B49/022F25B2600/111F25B49/027F25B2400/075F04C18/02F04C23/001F04C28/06F04C28/08F04C28/28F04C2270/06F04C2270/70F04C2270/80Y02B30/70
Inventor 罗杰·诺尔卢·莫尼耶加里·A·海尔明克林之勇丹尼尔·J·舒特贝内迪克特·J·多尔奇赫
Owner VERTIV CORP