Pneumatic tool with integrated electricity generator
A rotor for a pneumatic tool having electricity-generating capabilities includes a shaft and an integral rotor body. The rotor body includes recesses dimensioned to receive an insulated subassembly having a magnet received within a nonmagnetic insulator to allow flux to be concentrated against stator windings. The rotor can be used in a conventional pneumatic tool, but can also be fitted with the insulated subassemblies in order to cooperate with a stator in the tool to generate electricity upon rotation of the rotor when pressurized fluid is applied to the vanes. A ring stator is connected to a supporting circuit by a connector and is supportable by a nonmagnetic end plate of the pneumatic tool and is disposed between the rotor and the rotor bearing.
1. An end plate for supporting a ring stator for cooperating with a rotor in an integrated electricity generator for a pneumatic tool, wherein said stator comprises:
an annular ring dimensioned to receive a shaft of said rotor;
at least one induction pole, each of said at least one induction pole depending from said annular ring and having mounted thereon a respective coil;
an output connector connected to said coils for transferring generated electricity to a load; and
wherein said end plate is formed of a nonmagnetic material and comprises
an end wall having an opening dimensioned to receive said shaft of said rotor;
an annular side wall depending from said end wall and having formed on its inward side a terminal slot for accommodating said connector and cavities for accommodating respective ones of said coils of said stator; wherein said stator may supported by said annular side wall against said annular end wall.
2. A stator for cooperating with a rotor in an integrated electricity generator for a pneumatic tool, comprising:
an annular substrate having an opening therethrough for accommodating a shaft of said rotor;
at least one induction pole, each of said at least one induction pole depending from said annular substrate and having mounted thereon a respective coil;
an output connector connected to each said respective coil;
wherein said output connector transfers generated electricity from each said respective coil when said rotor rotates relative to said stator.
3. The stator of claim 2 , wherein said output connector transfers generated electricity to a supporting circuit comprising a capacitor.
4. The stator of claim 3 , wherein said capacitor is an Aerogel capacitor.
5. The stator of claim 3 , wherein said supporting circuit and said stator are connected only by said output connector.
6. The stator of claim 3 , wherein said supporting circuit is encapsulated to prevent contact with condensation formed in said pneumatic tool.
7. The stator of claim 2 , wherein the annular substrate and induction poles are formed of Silicon Core Iron “B”.
8. The stator of claim 2 , wherein each said respective coil is formed directly on a respective induction pole without a bobbin.
9. The stator of claim 8 , wherein each said respective coil is formed of magnet wire.
10. The stator of claim 9 , wherein said magnet wire is bondabie and held to coil form by application of denatured alcohol.
11. The stator of claim 8 , wherein each said respective coil is held to coil form by application of epoxy.
12. The stator of claim 2 , disposed within an end plate between said rotor and a rotor bearing.
13. In an integrated electricity generator for a pneumatic tool, an end plate for supporting a stator, said stator having a ring shape, at least one coil and an output connector for transferring generated electricity from said coil, said end plate formed of nonmagnetic material and comprising:
an end wall having an opening therethrough for receiving a shaft of a rotor;
an annular sidewall depending from said end wall and having formed therein a terminal slot for accommodating said connector and at least one cavity for accommodating a respective one of said at least one coil.
14. The end plate of claim 13 , wherein said nonmagnetic material is aluminum.