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Title:
LIQUID PRESSURE UNIT
Document Type and Number:
WIPO Patent Application WO/2013/046630
Kind Code:
A1
Abstract:
A hydraulic pressure unit (10) is provided with a power module (53) for generating heat when electrified. This power module (53) is positioned on the bottom surface of a recess (35) in contact with hydraulic fluid in a tank (30). Therefore, the power module (53) is cooled by the hydraulic fluid in the tank (30), and as a result, the temperature difference between the power module (53) and the hydraulic fluid in the tank (30) decreases. A temperature sensor (59) detects the temperature of the power module (53) in the hydraulic unit (10). The temperature of the fluid in the tank (30) is estimated on the basis of the temperature detected by the temperature sensor (59).

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Inventors:
NAKATA TETSUO
Application Number:
PCT/JP2012/006062
Publication Date:
April 04, 2013
Filing Date:
September 24, 2012
Export Citation:
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Assignee:
DAIKIN IND LTD (JP)
International Classes:
F15B20/00; F15B1/00
Foreign References:
JPH11313466A1999-11-09
JP2006258271A2006-09-28
JPH08109872A1996-04-30
JPS63282063A1988-11-18
JPH0457685U1992-05-18
JP2005016596A2005-01-20
Attorney, Agent or Firm:
MAEDA & PARTNERS (JP)
Patent business corporation MAEDA PATENT OFFICE (JP)
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Claims:



 
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