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OwnerArno Hofmanninventor
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A membrane pump (1, 1′, 1″), in particular for use in the exhaust gas tract of a combustion engine (70), comprising a pressure housing (2), the internal volume (4) of which is subdivided by a number of resiliently deformable membranes (6) into a plurality of sub-volumes (8, 10) separated from one another on the gas side, wherein a biasing force is applied to the or each membrane (6) in such a way that in the pressure-free state the sub-volume (8) forming the primary side has a minimum value in relation to the deformability of the or each membrane (6), is to act so as particularly to increase effectiveness during use in the exhaust system of a combustion engine (70). For this purpose, according to the invention, a leaf spring (36) is provided as a restoring spring for applying the biasing force to the membrane (6).
A membrane pump for use in an exhaust gas tract of a combustion engine, comprising a pressure housing, the internal volume of which is subdivided by a one or more resiliently deformable membranes into an exhaust-side sub-volume into which exhaust is permitted to pass and a fresh gas-side sub-volume through which a gas flows, wherein a biasing force is applied to the one or more membranes in such a way that in a pressure-free state the exhaust-side sub-volume has a minimum volume in relation to a deformability of the one or more membranes, and wherein a leaf spring is provided as a restoring spring for applying the biasing force to the one or more membranes.
Dependencies are inferred from the claim text.