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Title:
DISPLACEMENT DETECTION DEVICE FOR VARIABLE DISPLACEMENT COMPRESSOR, AND VARIABLE CAPACITY COMPRESSOR EQUIPPED WITH SAME
Document Type and Number:
WIPO Patent Application WO/2011/089883
Kind Code:
A1
Abstract:
Provided is a displacement detection device for a variable displacement compressor which has a configuration such that the displacement detection device can estimate the displacement with little effect from external disturbances, and can be used with pistons that do not require a high degree of machining precision, thus allowing for a greater degree of freedom in the shape of the surface to be detected. Also provided is a variable displacement compressor equipped with said displacement detection device. The displacement detection device for a variable displacement compressor is equipped with: a position detection sensor, which is disposed laterally to the piston and outputs a surface displacement signal for the surface to be detected when the piston moves in a reciprocating manner; and an estimation means that measured and stores the waveform pattern (A) of the displacement signal for one stroke of the piston during operation at maximum displacement, detects the waveform pattern (B) of the displacement signal for one stroke of the piston in the current operating state, and estimates the displacement of one stroke of the piston in the current operating state from a comparison of waveform pattern (A) and waveform pattern (B).

Inventors:
IKEDA, Hiroshi (20 Kotobuki-cho, Isesaki-sh, Gunma 02, 〒3728502, JP)
Application Number:
JP2011/000231
Publication Date:
July 28, 2011
Filing Date:
January 18, 2011
Export Citation:
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Assignee:
SANDEN CORPORATION (20 Kotobuki-cho, Isesaki-shi Gunma, 02, 〒3728502, JP)
サンデン株式会社 (〒02 群馬県伊勢崎市寿町20番地 Gunma, 〒3728502, JP)
International Classes:
F04B27/10; F04B27/08; F04B27/14; F04B39/00; F04B49/00
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Claims: