Title:
HYDRAULIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/065161
Kind Code:
A1
Abstract:
A first check valve (15) is provided in a first line (10) connected to a first pump (11) to ensure forward flow from the first pump (11) to the main engine hydraulic circuit (5). A differential pressure regulating valve (6) is provided connected to an upstream portion (10a) upstream from the first check valve (15) of the first line (10) and to a downstream portion (10b) downstream from the first check valve (15) of the first line (10). The differential pressure regulating valve (6) discharges hydraulic oil of the downstream portion (10b) when the value obtained by subtracting the upstream pressure (Pa) of the upstream portion (10a) from the downstream pressure (Pb) of the downstream portion (10b) is greater than a constant (Ps).
Inventors:
MIYAGI, Junichi (1-1, Nishihitotsuya, Settsu-sh, Osaka 85, 〒5668585, JP)
Application Number:
JP2010/068713
Publication Date:
June 03, 2011
Filing Date:
October 22, 2010
Export Citation:
Assignee:
DAIKIN INDUSTRIES, LTD. (Umeda Center Building, 4-12 Nakazaki-Nishi 2-Chome, Kita-ku, Osaka-sh, Osaka 23, 〒5308323, JP)
ダイキン工業株式会社 (〒23 大阪府大阪市北区中崎西２丁目４番１２号梅田センタービル Osaka, 〒5308323, JP)
ダイキン工業株式会社 (〒23 大阪府大阪市北区中崎西２丁目４番１２号梅田センタービル Osaka, 〒5308323, JP)
International Classes:
F15B11/00; B30B1/32; F15B11/02; F15B11/028
Attorney, Agent or Firm:
TANAKA, Mitsuo et al. (AOYAMA & PARTNERS, IMP Building 3-7, Shiromi 1-chome, Chuo-ku, Osaka-sh, Osaka 01, 〒5400001, JP)
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