Dispensing device having a piezoelectric element

摘要

A release device for releasing a flowable preparation includes an electrical energy source, a control unit connected to the energy source, a sensor unit, a release element and an acoustic transducer. The sensor unit is a piezoelectric element suitable for picking up sound waves and/or structure-borne noise from the surrounding environment and converting them into a sensor signal which is converted in the control unit into a control signal for the release element. The release element is the same piezoelectric element and is supplied with electrical signals from the control unit and sprays at least one first preparation from at least one first container. The acoustic transducer is the same piezoelectric element and is supplied with electrical signals from the control unit, which electrical signals are converted by the piezoelectric element into audible acoustic signals in a frequency range of 20 Hz to 20 kHz.

主权项

1. A release device for releasing a flowable preparation, comprising
an electrical energy source; a control unit connected to the energy source and configured to receive a sensor signal from a sensor unit and, responsive thereto, to convert the sensor signal into a control signal; a piezoelectric element configured to act as the sensor unit, a release element, and an acoustic transducer,
wherein when acting as the sensor unit, the piezoelectric element receives one or more of sound waves in a frequency range of 1 kHz-300 kHz and/or structure-borne noise from the surrounding environment of the release device, and converts the sound waves into the sensor signal; andwherein, when acting as a release element, the piezoelectric element that is supplied with the control signal from the control unit sprays at least one first preparation from at least one first container which is connected in communicating manner with the release element; andwherein, when acting as an acoustic transducer, the piezoelectric element is supplied with the control signal and converts the control signal into audible acoustic signals in a frequency range of 20 Hz to 20 kHz.