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Apparatus for the conversion of pressure fluctuations prevailing in fluid systems into electrical energy
| Details |
Inventors: Kunkel, Horst;
Assignee: Hansa Metallwerke AG (Stuttgart, DE)
Primary Examiner: Stephan; Steven L.
Assistant Examiner: Ponomarenko; Nicholas
Attorney, Agent or Firm: Lowe, Price, LeBlanc & Becker
An apparatus for the conversion of pressure fluctuations prevailing in fluid systems into electrical energy includes in a casing (1) a first chamber (4) which may be connected to a fluid system and is limited on one side by a movable wall, for example a membrane (3). The movable wall is mechanically linked to an apparatus (6), e.g. a piezoelectric converter, which converts the mechanical energy made available by the motion of the movable wall (3) into electrical energy (FIG. 1). |
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DETAILED DESCRIPTION It is the task of the present invention to create an apparatus of the type specified at the start which produces an electrical voltage even in unfavourable conditions of illumination, without a reservoir of heat or any flow within the fluid system.
This task is resolved according to the invention in that the apparatus includes: a) a casing b) at least one chamber formed in the casing which may be linked to a fluid system and which is limited on the one side by a wall which may be moved back and forth under the influence of the pressure prevailing in the fluid system; c) at least one apparatus which is connected to the movable wall and which converts the mechanical energy transmitted by this into electrical energy.
The invention makes use of the knowledge that pressure fluctuations are present in all fluid systems and certainly always in domestic plumbing systems.
The more taps there are attached to the fluid system, the stronger are these pressure fluctuations.
With an apparatus according to the invention, the energy which is available in these pressure fluctuations is first of all converted into mechanical and then electrical energy.
Pressure fluctuations of this type are present by day and by night, with and without illumination and in cold and hot water systems.
The apparatus according to the invention thus operates uninterruptedly and can charge an accumulator, e.
g a sanitary appliance for 24 hours per day.
The apparatus c) can be a piezoelectric converter as is usually offered for sale in the trade.
The normal purpose for which a piezoelectric converter of this type, as is normally found in the trade, is used is, though, reversed: application of an external voltage should give rise to a mechanical motion.
With the present invention by contrast, the mechanical motion is provided in advance; a voltage accordingly arises at the electrical output terminals of the piezoelectric converter which can then be further processed.
Alternatively, the apparatus c) can include a coil which interacts with a permanent magnet that can move relative to it
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Electrical and Wave 
