摘要:
From the prior art, a pressure retention valve is known, comprising a housing having an inlet channel and an outlet channel, wherein the inlet channel and the outlet channel can be connected to each other, a separating membrane dividing the housing in two sections, a first section conducting fluid during operation of the value, and a second section that is fluid-free during operation of the valve, a valve seat, which is disposed in the fluid-conducting section of the housing, having a sealing surface, wherein the valve seat defines an end of the inlet channel, a shut-off body, which is movably disposed in the fluid-conducting section of the housing, having a sealing surface, and a spring element having a spring force, which is disposed in the fluid-free section of the pressure retention valve. The spring element is disposed such that the spring force thereof preloads the sealing surface of the shut-off body in the direction of the sealing surface of the valve seat, such that the sealing surfaces are engaged with each other in a position of the shut-off body that closes the valve and the shut-off body separates the inlet channel from the outlet channel. The inlet channel is disposed such that a fluid flowing in through the inlet channel during operation of the valve is applied to the shut-off body such that the fluid exerts a force on the shut-off body, which acts counter to the spring force of the spring element. A guide disk, which displaceably guides the valve stem, is provided between the separating membrane and the valve seat, wherein the guide disk surrounds the valve stem forming a narrow annular gap acting as a throttle point. The narrow annular gap between the valve stem and guide disk in the prior art, through which no or only very small amounts of fluid flow, tends to soil, which can impair the functional capability of the valve. In contrast, it is the aim of the present invention to provide a pressure retention valve that prevents this problem. To this end, according to the invention a pressure retention valve of the type described above is further developed such that the shut-off body comprises a guide section, which extends into the inlet channel, and wherein the inlet channel is designed in some sections such that it forms a guide bushing in which the guide section of the shut-off body is received in a guided manner.
摘要:
Die Erfindung betrifft einen Verdichterbypass für mehrstufige Aufladung in Verbrennungskraftmaschinen mit Aufladeeinrichtung. Der Verdichterbypass umfasst ein in einem Ventilgehäuse (1) aufgenommenen Verdrängerkörper (2). Der Verdrängerkörper (2) ist in ein erstes Verdrängerteil 3 und ein zweites Verdrängerteil (4) geteilt, wobei das der Anströmseite zugewandte erste Verdrängerteil (3) den Verdichterbypass (6) verschließt oder freigibt.
摘要:
Valve (1) comprising a valve housing (2) with a pressure inlet (3) and a pressure outlet (11), and where in the pressure inlet a valve seat (4) is arranged and a matching valve body (5), which is acted upon by a spring element (8) in the direction towards the valve seat (4) and thereby the closing position of the valve, and where in the housing damping means (12,13,14,15) are further arranged for controlled acting on the movement of the valve body (5) in the valve housing (2). The damping means (12,13,14,15) are arranged in such a manner, that the movement of the valve body (5) towards the valve seat (4) is damped more than the movement of the valve body (5) away from the valve seat (4).
摘要:
A pulsator device connectable to a pressurized fluid supply line, particularly a water supply line, for converting the fluid pressure of the line to a pulsating pressure. The pulsator device comprises a valve (2) which is normally closed, automatically opens at a predetermined opening pressure to connect its inlet (107) to its outlet (106), and automatically closes at a predetermined closing pressure lower than its opening pressure. The pulsator device further includes a reservoir (102) for the fluid such that when the valve (2) is closed the reservoir (102) fills up and at the same time builds up pressure until the valve (2) opens to discharge the fluid within the reservoir (102).
摘要:
A valve is provided having a housing (130) with an inlet (110) and an outlet (120). Within the confines of the housing is a fluid flow path that allows for fluid communication between the inlet and the outlet. The valve includes a valve element (140) that is movable to and from a position where it blocks fluid communication along the fluid flow path, thereby closing the valve. The valve also includes a resilient member (150) provided in a chamber (160) of the valve that is fluidly sealed from the fluid flow path. The resilient member urges the valve element to move to the position for closing the valve. When the pressure of fluid entering the inlet exceeds a preselected amount, the pressure of the fluid overcomes the urging of the resilient member and the valve element moves towards a position that allows fluid communication along the fluid flow path, thereby opening the valve.
摘要:
A pulsator device connectable to a pressurized fluid supply line, particularly a water supply line, for converting the fluid pressure of the line to a pulsating pressure. The pulsator device comprises a valve (2) which is normally closed, automatically opens at a predetermined opening pressure to connect its inlet (107) to its outlet (106), and automatically closes at a predetermined closing pressure lower than its opening pressure. The pulsator device further includes a reservoir (102) for the fluid such that when the valve (2) is closed the reservoir (102) fills up and at the same time builds up pressure until the valve (2) opens to discharge the fluid within the reservoir (102).
摘要:
A quick-action on off valve comprises a housing (2) including a partition (10) having an interconnecting passageway (18,20) between two chambers (12,14) on opposite sides of the partition. One chamber includes a fixed piston (36,38) and a movable cylinder (40), the cylinder (40) including a resilient disc (44) between its closed end (42) and the port leading from the first chamber (12), and a spring (46) urging the cylinder (40) in the direction tending to close the latter port. Spacing means (48) are provided between the partition (10) and the open end of the cylinder (40) for continuously maintaining communication between the first chamber (12) and the interconnecting passageway (18,20). The difference in the cross-sectional areas of the first port and of the cylinder (40) result in a smaller area of the cylinder (40) being effective to open the valve when the valve is closed, but a larger area of the cylinder (40) being effective to close the valve when the valve is open, thereby providing a quick-action opening and closing of the valve.