Patent ID: 6333586
Filing Date: 2001-12-25
Classification: F02M,F16K,H01L

Abstract:
A valve for controlling fluids, comprising a piezoelectric actuator (53), a valve member (40) which is actuatable at least indirectly, counter to a restoring force, by said piezoelectric actuator (53) which has a piezoelectric element (56) that is supported by one face end (58) in a housing (2) and that upon a change in a voltage applied to the piezoelectric element undergoes a change of length that can be transmitted by means of another face end (57) of the piezoelectric actuator to the valve member (40) in order to adjust the latter, in a heat flow from the piezoelectric actuator (53) to a heat-dissipating part of the housing, a Peltier element (62) is incorporated, which is triggered by an electric control unit (36) in such a way that temperature-dictated changes in length of the piezoelectric actuator (53) are at least partly compensated for compared with those changes in the housing (2) that receives the piezoelectric actuator.