Rapid tire inflation plant

1. A rapid tyre inflation plant comprising

a low pressure high flow inflating gas source,

an inflation device,

a motor,

a compressor driven by said motor and arranged to provide a flow of inflating gas at a relatively high flow and pressure to said inflation device,

a control circuit arranged to control feed of low pressure inflating gas from said inflating gas source to said compressor, and

a turbine suitable for the exploitation of energy deriving from the inflation gas supplied thereto from said control circuit at a relatively large flow and low pressure coming from the said inflating gas source.

2. A plant according to claim 1 , comprising a heat exchanger designed to intercept the feed of inflating gas to said turbine and the feed of compressed inflating gas coming from said compressor.

3. A plant according to claim 1 , wherein said control circuit comprises a comparator device designed to compare a preset threshold pressure with the actual inflating pressure and shut off the supply of inflating gas when the inflating pressure reaches a preset threshold pressure value.

4. A plant according to claim 3 , wherein said comparator device comprises a three-input pressure comparing value and an output arranged to communicate through a first input with said inflation gas source, a switching valve controlled by said comparing valve and communicating with the output of said pressure comparing valve, a threshold-pressure presetting manometer in fluid communication with a second input to said pressure comparing valve, and a manometer detecting the pressure in a tyre that is being inflated in controlled fluid communication with a third input to said pressure comparing valve.

5. A plant according to claim 4 , wherein said manometer measuring the pressure in a tyre being inflated communicates with said third input of said pressure comparing valve by way of a pressure reducer, a constrictor connected in series, a compensation tank connected between said reducer said constrictor and said switching valve, and an adjustable pressure reducer between said inflation gas source and said pressure threshold manometer.

6. A plant according to claim 1 , wherein said control circuit comprises a control unit including a microprocessor, a microprocessor access keyboard, a control manometer arranged to measure the pressure of the inflation gas at the compressor output, and a power actuator that can be controlled by said control unit and also having an electro-valve connected at its output with the input of said turbine and said compressor, whereas at its first input it communicates with said inflation gas source.

7. A plant according to claim 6 , comprising a silencer for the turbine output.

8. A plant according to claim 1 , comprising a deflation valve connected to the said compressor output.

9. A plant according to claim 1 , comprising a shut-off valve between said inflation gas source and said control circuit.

10. A rapid tyre inflation plant comprising

a low pressure high flow inflating gas source,

an inflation device,

a motor,

a compressor driven by said motor and arranged to provide a flow of inflating gas at a relatively high flow and pressure to said inflation device, and

a control circuit arranged to control feed of low pressure inflating gas from said inflating gas source to said compressor, wherein said control circuit comprises a control unit including a microprocessor, a microprocessor access keyboard, a control manometer arranged to measure the pressured of the inflation gas at the compressor output, and a power actuator that can be controlled by said control unit and also having an electro-valve connected at its output with the input of said turbine and said compressor, whereas at its first input it communicates with said inflation gas source.

11. A plant according to claim 10 , comprising a silencer for the turbine output.

12. A plant according to claim 10 , comprising a deflation valve connected to the said compressor output.

13. A plant according to claim 10 , comprising a shut-off valve between said inflation gas source and said control circuit.