Title:
FLOW CONTROL VALVE AND HYDRAULIC MACHINE INCLUDING THE SAME
Document Type and Number:
WIPO Patent Application WO/2019/066111
Kind Code:
A1
Abstract:
A flow control valve is disclosed. A valve body has an inner circumferential surface defining a longitudinal bore to which at least a portion of first and second fluid passages is connected. A spool is slidably inserted into the bore to allow a flow of fluid from the first to second fluid passage. A valve regulates a flow rate of fluid flowing through the first fluid passage. A first seat surface is defined between an area in which the first fluid passage is connected to the bore and an area in which the second fluid passage is connected to the bore. When the flow of fluid from the first to second fluid passage is initiated, an area of a gap between the first seat surface and the spool on a plane taken in a transverse direction is 5%~50%, preferably 10%~20% of an area of an opening defined by the first seat surface.
Inventors:
KIM JINWOOK (KR)
Application Number:
PCT/KR2017/011033
Publication Date:
April 04, 2019
Filing Date:
September 29, 2017
Export Citation:
Assignee:
VOLVO CONSTR EQUIP AB (SE)
KIM JINWOOK (KR)
KIM JINWOOK (KR)
International Classes:
F15B13/04; F16K11/07
Foreign References:
| US5890362A | 1999-04-06 | |||
| US20130153068A1 | 2013-06-20 | |||
| US20140034133A1 | 2014-02-06 | |||
| JP2009529636A | 2009-08-20 | |||
| JP2008008386A | 2008-01-17 |
Other References:
See also references of EP 3688316A4
Attorney, Agent or Firm:
KIM, Seon-Min (KR)
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