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Inverted axial, radial or semi-radial turbine

IP.com Disclosure Number: IPCOM000212463D
Original Publication Date: 2011-Nov-14
Included in the Prior Art Database: 2011-Nov-14
Document File: 2 page(s) / 231K

Publishing Venue

Siemens

Related People

Juergen Carstens: CONTACT

Abstract

Turbines in any application area consist of an outer case and an inner rotating shaft. The inner rotating shaft carries the turbine blades and is used to extract work from the fluid, which flows trough the turbine. The outer case is built to obtain a certain duct for the fluid. Furthermore, it carries the vanes, which align the stream of the fluid and prevent it from taking over the rotation of the blades.

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Inverted axial, radial or semi-radial turbine

Idea: Fredrik Karlsson, SE-Finspong

Turbines in any application area consist of an outer case and an inner rotating shaft. The inner rotating shaft carries the turbine blades and is used to extract work from the fluid, which flows trough the turbine. The outer case is built to obtain a certain duct for the fluid. Furthermore, it carries the vanes, which align the stream of the fluid and prevent it from taking over the rotation of the blades.

In the following, a novel configuration of a turbine is introduced, which is converted in comparison to the standard configuration. The proposed turbine configuration combines a static inner structure, which carries the vanes, with a rotating outer shell, which carries the blades. Thus, in the novel configuration, the work is extracted from the outer rotational shell of the turbine. Figure 1 shows a sectional view of the novel turbine configuration. Several parts of the novel turbine, like blades, vanes and heat shields could be produced from ceramic materials or ceramic matrix composites with a low thermal conductivity.

The novel turbine concept could be applied to axial, radial or semi-radial turbines. It could for example be used in hybrid systems for vehicles. In this case of application, the mass inertia of the outer rotating shell could be used to replace a large capacitor. Another possible application area for the novel turbine concept is the use in turbofan jet engines. T...