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Patent Searching and Data


Title:
LIQUID DISCHARGE DEVICE WITH ABNORMALITY DETECTING FUNCTION AND CONTROL DEVICE THEREFOR
Document Type and Number:
Japanese Patent JP2010014094
Kind Code:
A
Abstract:

To provide a technology easily detecting an abnormality of a liquid discharge device.

This invention relates to a control device for controlling the liquid discharge device having a positive displacement pump for supplying approximately constant amount of liquid with respect to each predetermined cycle. The control device detects abnormality of at least one of a nozzle and the positive displacement pump by comparing a threshold value in a predetermined range determined in accordance with orifice characteristics of the nozzle and supply flow rate characteristics of the positive displacement pump driven by compressed air with a pressure command value of the compressed air to be supplied to a pneumatic motor for driving the positive displacement pump.


Inventors:
Suzuki, Yoshitaka
Nishio, Tatsuya
Application Number:
JP2008000177174
Publication Date:
January 21, 2010
Filing Date:
July 07, 2008
Export Citation:
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Assignee:
ASAHI SUNAC CORP
International Classes:
F04B49/08; F04B13/00; F04B49/06; F04B49/10
Domestic Patent References:
JPH02219702A
JP2001050169A
JP2003028076A
JP2004338016A
JPH0663219U
JP2004036421A
JP2004225620A
JP2004245181A
JPH02219702A
JP2001050169A
JP2003028076A
Attorney, Agent or Firm:
後呂 和男
村上 二郎
水澤 圭子