Willi Nieratschker

Title: Willi Nieratschker: Innovator in Cryogenic Technology

Introduction

Willi Nieratschker is a notable inventor based in Stuttgart, Germany. He has made significant contributions to the field of cryogenic technology, holding three patents that showcase his innovative spirit and technical expertise.

Latest Patents

One of Nieratschker's latest patents is a reciprocating pump designed for cryogenic fluids. This pump features a cylinder in which a piston is oscillatingly displaceable in a sealed state. It includes an inlet valve, an outlet valve, and an annular channel surrounding the pump cylinder to facilitate the delivery of cryogenic fluid. The design aims to achieve optimal sealing at operating temperatures while ensuring that piston motion is not impeded at higher temperatures. The cylinder is made from a material with excellent sliding and self-lubricating properties, which has a thermal expansion coefficient larger than that of the piston. The dimensions of the cylinder and piston are carefully selected to ensure a sealing contact at operating temperatures, with the outlet valve positioned at the downstream end of the annular channel.

Another significant patent involves a method and apparatus for the automatic refilling of a liquid hydrogen tank in a motor vehicle. This innovative system connects the liquid hydrogen supply line to a hydrogen gas return line before refilling begins. Liquid hydrogen is passed through these lines to cool them, ensuring efficient refueling. A bypass line connects the supply line to the return line, and electrically operable closing valves are strategically placed to control the flow.

Career Highlights

Willi Nieratschker is associated with the Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., a prominent research institution in Germany. His work there has allowed him to focus on advancements in aerospace technology and cryogenic systems.

Collaborations

Throughout his career, Nieratschker has collaborated with esteemed colleagues such as Walter Peschka and Gottfried Schneider. These partnerships have contributed to the development of innovative solutions in the field of cryogenics.

Conclusion

Willi Nieratschker's contributions to cryogenic technology through his patents and collaborations highlight his role as a leading inventor in this specialized field. His work continues to influence advancements in the efficient handling of cryogenic fluids and hydrogen refueling systems.