Method for controlling the temperature of a jetting device

摘要

The invention relates to a method for operating a jetting device, configured to expel droplets of an electrically conductive fluid wherein at least a part of the conductive fluid is positioned in a magnetic field, the method comprising the steps of providing a direct electrical current in the part of the conductive fluid positioned in the magnetic field, and providing an alternating electrical current in the part of the conductive fluid positioned in the magnetic field, the alternating electrical current, wherein the direct electrical current and the alternating electrical current are controlled such that the sum of heat generated by the direct electrical current and the alternating electrical current is substantially constant.;The invention further relates to a jetting device for employing the described method.

主权项

1. A method for operating a jetting device, the jetting device being configured to expel droplets of an electrically conducting fluid wherein at least a part of the conductive fluid is positioned in a magnetic field, the method comprising the steps of:
a) providing a direct electrical current in the part of the conductive fluid positioned in the magnetic field, thereby generating a Lorentz force in the conductive fluid and generating an amount of heat; b) providing an alternating electrical current in the part of the conductive fluid positioned in the magnetic field, the alternating electrical current generating an amount of heat; and c) controlling the direct electrical current and the alternating electrical current such that the sum of heat generated by the direct electrical current and the alternating electrical current is substantially constant.