Patent ID: 9109709
Filing Date: 2015-08-18
Classification: F16K,Y10T

Abstract:
1. A residual pressure valve ( 10 ; 10 a ; 10 b ) for a flow medium, comprising: a flow passage ( 30 ) which is arranged in a valve housing ( 15 ) and is adapted to allow flow in a first or a second direction wherein the second direction is opposite to the first direction, wherein flow is interrupted by means of an at least partially movable sealing element ( 41 ; 41 a ) activated depending on a pressure of a flow medium, wherein an energy store means ( 45 ) is designed as a pressure spring and the sealing element ( 41 ; 41 a ) is seated against a counter element ( 21 ; 21 a ) in a sealing manner when the flow medium drops below a minimum pressure in order to interrupt the flow passage ( 30 ), wherein the flow passage ( 30 ) has two separate bores ( 32 , 58 ) which are arranged coaxially in relation to one another and are connected to one another by at least one connecting channel ( 33 ), wherein the at least one connecting channel ( 33 ) is constructed in a first part ( 17 ; 17 b ) of the valve housing ( 15 ), which has a mount ( 40 ) for the at least indirect sliding guidance of the sealing element ( 41 ; 41 a ) and is adapted to receive the energy store means ( 45 ), and wherein the connection between a first bore of the two separate bores ( 58 ) and the at least one connecting channel ( 33 ) takes place via an annular space ( 28 ) which is arranged symmetrically to a longitudinal axis ( 20 ) of the valve housing ( 15 ) between the first part of the valve housing ( 17 ; 17 b ) and a second valve housing part ( 16 ; 16 a ; 16 b ) radially surrounding the valve housing first part ( 17 ; 17 b ) in a region of the flow path ( 30 ), wherein the sealing element ( 41 ; 41 a ) is arranged directly in the mount ( 40 ), and the energy store means ( 45 ) is arranged in a space formed by the mount ( 40 ) and the sealing element ( 41 ; 41 a ), which space is connected with the environment by means of at least one vent bore ( 49 ), wherein the counter element ( 21 ; 21 a ) is formed by a wall section ( 21 a ) of the second valve housing part ( 16 ) circumferential radially to the longitudinal axis ( 20 ) of the valve housing ( 15 ).