The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 14, 2016
Filed:
Sep. 24, 2012
Applicant:
Daikin Industries, Ltd., Osaka-shi, Osaka, JP;
Inventor:
Tetsuo Nakata, Kusatsu, JP;
Assignee:
DAIKIN INDUSTRIES, LTD., Osaka-Shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D 31/02 (2006.01); F04D 29/58 (2006.01); F04B 49/06 (2006.01); F15B 1/26 (2006.01); F15B 19/00 (2006.01);
U.S. Cl.
CPC ...
F04D 29/5806 (2013.01); F04B 49/065 (2013.01); F15B 1/26 (2013.01); F15B 19/005 (2013.01);
Abstract
An oil-hydraulic unit includes a power module generating heat when energized. The power module is provided on the bottom surface of a recess facing hydraulic oil in a tank. Thus, the power module is cooled by the hydraulic oil in the tank. This reduces the difference in temperature between the power module and the hydraulic oil in the tank. In the oil-hydraulic unit, the temperature sensor detects the temperature of the power module. The oil temperature in the tank is estimated based on the temperature detected by the temperature sensor.