Compressed gas supply unit, compressed gas supply apparatus and control method of said unit and said apparatus

a technology of compressed gas and compressor, which is applied in the direction of mechanical equipment, machines/engines, liquid fuel engines, etc., can solve the problems of system security problems, system requirements for network line construction costs, and inability to accurately calculate the surplus of compressors, etc., to accurately grasp the abnormality of compressors, accurately determine the presence or absence of compressor abnormalities, and accurately determine the effect of compressor abnormalities
US20130272840A1Inactive Publication Date: 2013-10-17ANEST IWATA CORP
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
ANEST IWATA CORP
Publication Date
2013-10-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

A compressed gas supply unit includes compressors. Gas discharged from the compressors is stored in a storage tank and then supplied to a gas recipient. The pressure of the storage tank, the operation temperature and the power consumption of each compressor, and the temperature around the compressors are sent to a controller and a monitoring device. A determination unit of the controller determines the presence or absence of the abnormality of the compressor from a difference between the operation temperature of the compressor and the temperature around the compressors. An effective load calculation unit calculates the effective load of each compressor from the power consumption of the compressor and the pressure of the storage tank. The controller controls the compressors based on the calculated effective load such that the loads of the compressors are equalized. An estimation unit estimates maintenance timing from the effective load.
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Description

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to a compressed gas supply unit which includes a plurality of compressors and allows the energy-saving operation of the compressors and saving of a maintenance cost, a compressed gas supply apparatus, and a control method of the unit and the apparatus.

[0003] 2. Description of the Related Art

[0004] There is known a compressed gas supply unit which includes a plurality of compressors and supplies compressed gas to a gas recipient while controlling the number of compressors under operating condition according to a demand. In such a compressed gas supply unit, energy saving is achieved by minimizing the number of compressors under operating condition. Japanese Patent Application Laid-open No. 2010-190197 discloses a compressed gas supply unit which includes a shared storage tank which stores gas discharged from a plurality of compressor and a pressure sensor which detects the internal pressure of...

Claims

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