Electropneumatic field device
First Claim
1. An electropneumatic field device system for supply with pneumatic energy, comprising:
- a valve;
a pneumatic actuator for receiving said pneumatic energy and connected to actuate the valve;
an electropneumatic field controller controlling said pneumatic actuator by controlling said pneumatic energy to said pneumatic actuator;
an energy converter for converting the pneumatic energy also supplied to the pneumatic actuator into electrical energy;
said energy converter comprisingan oscillating permanent magnet that receives a compressed air pulse to perform a forward motion,a return transmitting a return force to the oscillating permanent magnet resulting in a return motion opposite to the forward motion, an electrical voltage being induced in a coil of the energy converter by the forward and return motions of the oscillating permanent magnet,the return being designed to generate a magnetic field that is polarized with respect to the oscillating permanent magnet such that a magnetic repulsion return force induces the return motion; and
a pressure controller for supplying said pneumatic energy to the energy converter.
1 Assignment
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Accused Products
Abstract
In an electropneumatic field device for controlling a pneumatic actuator, an energy converter converts pneumatic energy of a pneumatic power supply of the actuator into electrical energy. An oscillating permanent magnet receives a compressed air pulse to perform a forward motion. A return device transmits a return force to the oscillating permanent magnet for performing a return motion opposite to the forward motion. An electrical voltage is induced into a coil of the energy converter by the forward and return motions of the oscillating permanent magnet. The return device is designed to generate a magnetic field that is polarized with respect to the oscillating permanent magnet such that a magnetic repulsion return force induces the return motion.
19 Citations
12 Claims
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1. An electropneumatic field device system for supply with pneumatic energy, comprising:
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a valve; a pneumatic actuator for receiving said pneumatic energy and connected to actuate the valve; an electropneumatic field controller controlling said pneumatic actuator by controlling said pneumatic energy to said pneumatic actuator; an energy converter for converting the pneumatic energy also supplied to the pneumatic actuator into electrical energy; said energy converter comprising an oscillating permanent magnet that receives a compressed air pulse to perform a forward motion, a return transmitting a return force to the oscillating permanent magnet resulting in a return motion opposite to the forward motion, an electrical voltage being induced in a coil of the energy converter by the forward and return motions of the oscillating permanent magnet, the return being designed to generate a magnetic field that is polarized with respect to the oscillating permanent magnet such that a magnetic repulsion return force induces the return motion; and a pressure controller for supplying said pneumatic energy to the energy converter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for providing an electrical power supply for a pneumatic field device system for supply with pneumatic energy, said field device system comprising a valve, a pneumatic actuator connected to actuate the valve, the pneumatic energy being supplied to the pneumatic actuator, and an electropneumatic field controller controlling said pneumatic actuator by controlling said pneumatic energy to said pneumatic actuator, comprising the steps of:
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providing an energy converter for converting the pneumatic energy also supplied to the pneumatic actuator into electrical energy, said energy converter having an oscillating permanent magnet that receives a compressed air pulse to perform a forward motion, a return transmitting a return force to the oscillating permanent magnet resulting in a return motion opposite to the forward motion, and an electrical voltage being induced in a coil of the energy converter by the forward and return motions of the oscillating permanent magnet; providing a pressure controller for supplying said pneumatic energy to the energy converter; and generating a magnetic field with said return that is polarized with respect to the oscillating permanent magnet such that a magnetic repulsion return force induces the return motion. - View Dependent Claims (12)
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Specification