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System and method for controlling a variable displacement compressor

A compressor, variable volume technology, used in liquid variable volume machinery, refrigerators, refrigeration and liquefaction, etc.

Active Publication Date: 2008-01-16
盾安美斯泰克公司(美国)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Large closing forces may require bulky actuators or additional power to keep the inlet valve closed

Method used

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  • System and method for controlling a variable displacement compressor
  • System and method for controlling a variable displacement compressor
  • System and method for controlling a variable displacement compressor

Examples

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Embodiment Construction

[0072] Referring again to the drawings, a system 410 according to a first embodiment of the present invention is illustrated in FIG. 7 . Fig. 7 is substantially similar to Fig. 2, except for the parts which will be described below, the same reference numerals are used for the same parts.

[0073] System 410 includes partition wall 412 . The partition wall 412 divides the reference chamber 90 into two independent chambers, an upper chamber 490a and a lower chamber 490b. The upper chamber 490a is defined by the diaphragm 36 and the partition wall 412 at opposite ends. The lower cavity 490b is defined by the dividing wall 412 and the end valve cover 20 at the opposite end.

[0074] The lower crankcase bore 414 is in fluid communication with the crankcase chamber 118 via a third crankcase pressure passage 416 . Accordingly, pressure sensor 84 may be operated to measure the actual pressure of crankcase chamber 118 . In this application, "pressure sensor" denotes any sensor that...

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PUM

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Abstract

A system and method for controlling the displacement of a variable displacement compressor by feeding back crankcase pressure as part of a control scheme is disclosed.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application Serial No. 60 / 644,097, filed January 14, 2005. [0003] Statement Regarding Federally Sponsored Research or Development [0004] This invention was made with United States Government support under Cooperative Agreement No. 70NANB2H3003 awarded by the National Institute of Standards and Technology (NIST). The US Government has certain rights in this invention. technical field [0005] The present invention generally relates to variable displacement compressors. Background of the invention [0006] US Patent No. 4,428,718 to Skinner (Skinner '718), titled "Variable Displacement Compressor Control Valve Arrangement" describes a variable displacement compressor, a conventional pneumatic control valve, the general function of a variable displacement compressor , and the interaction of the control valve with the compressor, the disclosure of which is in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B43/12F04B1/26F25B49/00
CPCF04B2027/1854F04B2027/1813F04B2027/1827F04B2027/1831F04B2027/1859F04B2027/185F04B27/1804F04B43/12F25B49/00F04B1/26
Inventor J·R·乌伊贝尔
Owner 盾安美斯泰克公司(美国)
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