Patent ID: 9555350
Date: 2017-01-31
CPC Classifications: B01D,F16K,Y10T

Claim:
1. A bypass valve of a device through which a fluid medium flows, the device having a varying flow resistance, comprising: a valve seat and a valve body that works together with the valve seat and to which there is applied a preloading force in the closing direction, the valve body being movable in the opening direction by a fluid medium pressure difference, exceeding a specifiable boundary value, between an inflow side and an outflow side of the bypass valve, a bypass flow path running through the valve seat that connects the inflow side and the outflow side of the bypass valve while bypassing the device, a sieve element situated in the bypass flow path, wherein the valve body has two different opening position regions that are a function of the medium pressure difference, such that in a first opening position region of the valve body, given a lower fluid medium pressure difference, an entire cross-section of the bypass flow path is covered by the sieve element, and in a second opening position region of the valve body, given a greater fluid medium pressure difference, in addition, a sieve-free bypass flow path cross-section is exposed, wherein the sieve element is formed as a part of a contour limiting the bypass flow path, and wherein the valve body, in its first opening position region, is axially movably seated in sealing fashion on the sieve element, and wherein the valve body, in its second opening position region, is situated at a distance from the sieve element.