A switching valve having a valve seat with a longitudinal axis (L) and having a valve plate with a valve plate surface which can be placed into a pass-through position, in which the switching valve is open, and into a closed position, in which the switching valve is closed and the valve plate bears
A switching valve having a valve seat with a longitudinal axis (L) and having a valve plate with a valve plate surface which can be placed into a pass-through position, in which the switching valve is open, and into a closed position, in which the switching valve is closed and the valve plate bears with the valve plate surface, in a contact region, against the valve seat, wherein the valve plate has a modulus of elasticity of at least 1000 N/mm2, which switching valve is characterized in that the valve plate, in the closed position, is deformed by a closing force acting thereon, in such a way that the contact region of the valve plate surface in the closed position forms an angle α, which differs from 0°, with the contact region of the valve plate surface in the pass-through position.
대표청구항▼
1. A relief valve comprising: a valve seat with a longitudinal axis (L);a valve plate with a valve plate face, which is configured to be brought into a pass-through position at a response pressure, in which the relief valve is open, and the valve plate is configured to be brought into a closed posit
1. A relief valve comprising: a valve seat with a longitudinal axis (L);a valve plate with a valve plate face, which is configured to be brought into a pass-through position at a response pressure, in which the relief valve is open, and the valve plate is configured to be brought into a closed position at a pressure below the response pressure, in which the relief valve is closed and the valve plate bears against the valve seat in a singular continuous annular contact region by means of the valve plate face; anda guide configured to guide the valve plate along the longitudinal axis (L) between the closed position and the pass-through position;wherein the valve plate has a modulus of elasticity of at least 1000 N/mm2,wherein the valve plate deforms in the closed position as a result of a closing force acting thereon, in such a way that the valve plate face in the closed position forms an angle α, which is different from 0°, between the valve plate face in the closed position and the valve plate face in the pass-through position,wherein the valve plate is moveable along the longitudinal axis (L) to bring the valve plate from the closed position into the pass-through position and vice versa,wherein the valve plate and the guide move together along the longitudinal axis (L) to bring the valve plate from the closed position into the pass-through position at the response pressure,wherein the valve plate and the valve seat make contact only in the singular continuous annular contact region when in the closed position,wherein a thickness of the valve plate increases toward its center, andwherein the valve plate is arranged above the valve seat, and wherein, below the response pressure, weight of the valve plate and the guide resulting from gravitational force is sufficient to provide the closing force under which the valve plate deforms in the closed position. 2. The relief valve as claimed in claim 1, wherein the angle α is between 0.05° and 10°. 3. The relief valve as claimed in claim 1, wherein, as a result of the closing force, the valve plate deforms in a central region in the closed position by up to 2% of a diameter of the valve seat in the axial direction with respect to the longitudinal axis (L). 4. The relief valve as claimed in claim 1, wherein the valve plate comprises at least one disk having a thickness of 0.5 mm. 5. The relief valve as claimed in claim 1, wherein the valve seat comprises a sealing element against which the valve plate bears via the valve plate face. 6. The relief valve as claimed in claim 1, wherein the valve plate consists of a steel. 7. The relief valve as claimed in claim 1, wherein the valve plate consists of a plastic. 8. The relief valve as claimed in claim 1, wherein the response pressure at which the valve plate is brought from the closed position into the pass-through position is at least 1.5 mbar. 9. The relief valve as claimed in claim 1, wherein the angle α is between 0.1° and 5°. 10. The relief valve as claimed in claim 1, wherein the response pressure at which the valve plate is brought from the closed position into the pass-through position is at least 2.5 mbar. 11. The relief valve as claimed in claim 1, wherein the response pressure at which the valve plate is brought from the closed position into the pass-through position is at least 5 mbar and at most 1000 mbar. 12. The relief valve as claimed in claim 1, wherein the response pressure at which the valve plate is brought from the closed position into the pass-through position is at most 500 mbar. 13. The relief valve as claimed in claim 1, wherein the response pressure at which the valve plate is brought from the closed position into the pass-through position is at most 15 mbar. 14. The relief valve as claimed in claim 1, wherein the guide is the centermost element of the relief valve.
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