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System and method for controlling a variable speed compressor during stopping

A compressor system, compressor technology, used in pump control, liquid variable capacity machinery, pump combinations for elastic fluid rotary piston type/oscillating piston type, etc.

Active Publication Date: 2013-05-22
INGERSOLL RAND IND U S INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the inlet valve is not utilized, backflow as described above occurs through the inlet of the compressor when the compressor is stopped

Method used

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  • System and method for controlling a variable speed compressor during stopping
  • System and method for controlling a variable speed compressor during stopping

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Embodiment Construction

[0014] Before describing in detail any embodiments of the invention, it is to be understood that the invention is not limited in its application to the details of construction and the arrangements of parts set forth in the following description or depicted in the following drawings. The invention is capable of other embodiments and of being practiced or carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein are for the purpose of description and should not be regarded as limiting. The use of "comprising", "comprising" or "having" and variations thereof herein is meant to encompass the items listed thereafter and their equivalents as well as additional items. Unless specified or limited otherwise, the terms "mount", "connect", "support" and "coupling" and variations thereof are used broadly and include direct and indirect mounting, connecting, supporting and coupling. Furthermore, "connected" and "coupled" are not limited to ...

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Abstract

A compressor system operable to shutdown in response to a shutdown signal. The compressor system includes a compression device operable between a first speed and a second speed to produce a flow of compressed fluid at a pressure. A blowdown valve is movable between a closed position and an open position in which at least a portion of the flow of compressed fluid passes through the blowdown valve to reduce the pressure of the flow of compressed fluid. A sensor is positioned to measure the pressure and a controller is operable to move the blowdown valve to the open position and set the speed of the compression device to a low set point speed in response to the shutdown signal.

Description

[0001] Cross References to Related Applications [0002] Priority is hereby claimed to US Provisional Patent Application No. 60 / 656,753, filed February 26, 2005, which is hereby incorporated by reference in its entirety. technical field [0003] This invention relates to air compressors. More particularly, the present invention relates to a method of controlling a variable speed compressor during a stop. Background technique [0004] Conventional rotary air compressors have an inlet valve that controls airflow to the inlet or suction side of the compressor. The inlet valve throttles flow when the load on the compressor decreases and closes fully when the load on the compressor is removed. Inlet valves are often referred to as unloading valves. Load the compressor when opening the inlet valve to allow air to flow through the compressor inlet. Unloads the compressor when the valve is closed to block flow through the compressor inlet. [0005] Unloader valves are usually d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C28/06F04C28/08F04B49/02
CPCF04C28/06F04C2270/05F04C18/16F04C23/001F04C28/08F04C2270/18F04B49/03
Inventor 詹姆士·R·林德赛詹姆士·E·梅哈菲理查德·马乌奈伊
Owner INGERSOLL RAND IND U S INC