Seat-style pressure-relief valve
AssigneeRobert Bosch GmbH
InventorMartin Mueller
Life of this patent
Estimating the term…
Abstract
The pressure-relief valve (10) has a valve member (18), which interacts with a valve seat (17). The valve member (18) is forced with a certain pretensioning against the valve seat, which pretensioning is applied by way of a diaphragm (21), either directly by this or by virtue of an additional spring means. Whenever a predefined maximum pressure is exceeded, the diaphragm (21) comes to bear against a stop face (26). Due to the free guidance of the valve member (18) tight, contamination-sensitive gaps are avoided. Although the pressure-relief valve is compact, secure bearing contact of the valve member against the seat is nevertheless ensured (FIG. 1).
Claims5
A pressure-relief seat valve, comprising means forming an inflow and an outflow;
- a spring-loaded valve member preventing a pressure medium current from said outflow to said inflow and releasing the pressure medium current from said inflow to said outflow when a predetermined pressure is exceeded;
- a diaphragm cooperating with said valve member and having a rim which is clamped, said diaphragm forming spring means;
- an adjustable stop face against which said diaphragm bears when the predetermined maximum pressure is exceeded;
- a sealing ring against which said diaphragm bears in a region of a clamping point;
- and adjusting means for altering a pretensioning of said diaphragm.
A pressure-relief seat valve, comprising means forming an inflow and an outflow;
- a valve seat;
- a spring-loaded valve member preventing a pressure medium current from said outflow to said inflow and releasing the pressure medium current from said inflow to said outflow when a predetermined pressure is exceeded, said valve member being formed as a diaphragm, which is clamped at its rims;
- a stop face against which said diaphragm bears when the predetermined maximum pressure is exceeded;
- a sealing ring against which said diaphragm bears in a region of a clamping point;
- and spring means loading said diaphragm in direction toward said valve seat;
- and further comprising further spring means arranged between said diaphragm and said valve member.
Dependencies are inferred from the claim text.