Patent ID: 8220491
Filing Date: 2012-07-17
Classification: F16K,Y10T

Abstract:
1. A piezoelectric valve comprising: a housing provided with an inner chamber through which a medium can flow, in which chamber there ends at least one nozzle communicating with an associated port for the medium and provided with a sealing seat having a seat face, and a piezoelectric bending element that is deformed by electrical energization being received in the inner chamber of the housing in such a way that the at least one nozzle can be closed by a portion of the bending element that is movable relative to the at least one nozzle in response to deformation of the bending element, the piezoelectric bending element being provided with padding of an elastically resilient material at least in a region opposite the at least one nozzle, wherein the sealing seat is disposed at an end face of a nozzle insert that is disposed to be displaceable substantially perpendicular to the seat face in a receptacle fixed to the housing, wherein a thermally expandable compensating member acts between the receptacle and the nozzle insert, and wherein the nozzle insert is urged by a spring element against the compensating member.