Device for producing heat by circulating a fluid under pressure through a plurality of tubes, and a thermodynamic system implementing such a device

1. A closed circuit thermodynamic system associating main heat production means operating by compressing a fluid and a heat exchanger that are interconnected by a flow channel for fluid under pressure, the system comprising at least one secondary heat production device placed in the flow channel, interposed in the fluid flow direction between the main heat production means and the heat exchanger; wherein at least part of said flow channel is formed by a plurality of individual channels, said plurality of individual channels interposed between an inlet chamber and an outlet chamber, each of the chambers having a respective inlet or outlet pipe of identical respective main sections corresponding to the total section of said plurality of individual channels, said plurality of individual channels comprising peripheral individual channels that are radially offset around a common axis shared by the inlet and outlet pipes, which lie on a common axis.

2. The system according to claim 1 , wherein the individual channels further comprise a middle individual channel lying on the same axis as the inlet and outlet pipes.

3. The system according to claim 1 , wherein the inlet chamber forms a flare at the outlet of the inlet pipe leading generally to the individual channels.

4. The system according to claim 3 , wherein the inlet chamber forms an angle of inclination made up of the inlets to the peripheral individual channels facing the inlet pipe with a slope of orientation that is opposite to the slope of the flare at the outlet from the inlet pipe.

5. The system according to claim 1 , wherein the outlet chamber is generally organized as a Venturi effect device.

6. The system according to claim 5 , wherein the outlet chamber forms a flare constituting the inlet to the outlet pipe facing the individual channels.

7. The system according to claim 6 , wherein the outlet chamber forms an angle of inclination made up of the outlets from the peripheral individual channels facing the outlet pipe with a slope of orientation analogous to the orientation of the slope of the flare at the inlet of the outlet pipe.

8. The system according to claim 1 , wherein the secondary heat production device is a one-piece integral construction.

9. The system according to claim 1 , wherein the secondary heat production device comprises two bodies, respectively an inlet body and an outlet body, having arranged respectively therein, for the inlet body the inlet pipe extended by the chamber, and for the outlet body the outlet pipe extended by the outlet chamber, these bodies being interconnected by the individual channels and being provided with assembly means for assembling with respective junctions of said flow channel for a fluid under pressure.

10. The system according to claim 9 , wherein the assembly means is releasable, comprising thermally insulating junction members for interposing between the bodies and the corresponding junctions of the flow channel.

11. The system according to claim 9 , wherein the assembly means is permanent, comprising thermally insulating junction members for interposing between the bodies and the corresponding junctions of the flow channel.

12. The system according to claim 1 , wherein the secondary heat production device is formed by a plurality of elements assembled to one another.

13. A closed circuit thermodynamic system, comprising:

a main heat production unit that compresses a fluid;

a heat exchanger in fluid communication via a flow channel with the main heat production unit;

a secondary heat production device placed in the flow channel, interposed between the main heat production unit and the heat exchanger, the secondary heat production device comprising an inlet chamber and an outlet chamber and a plurality of individual channels interposed between the inlet chamber and the outlet chamber; the inlet chamber having an inlet pipe and the outlet chamber having an outlet pipe, the inlet pipe and the outlet pipe having respective main flow sections substantially corresponding to a total flow section of the plurality of individual channels, the plurality of individual channels comprising individual channels that are radially offset around an axis passing through centers of the inlet pipe and the outlet pipe.

14. The system according to claim 13 , wherein the plurality of individual channels further comprise a middle individual channel lying on the axis passing through the centers of the inlet pipe and the outlet pipe.

15. The system according to claim 13 , wherein the inlet chamber forms a flare at an outlet of the inlet pipe leading generally to the plurality of individual channels.

16. The system according to claim 15 , wherein the inlet chamber forms an angle of inclination made up of inlets to the plurality of individual channels facing the inlet pipe with a slope of orientation that is opposite to the slope of the flare at an outlet from the inlet pipe.

17. The system according to claim 13 , wherein the outlet chamber is configured as a Venturi effect device.

18. The system according to claim 17 , wherein the outlet chamber forms a flare constituting an inlet to the outlet pipe facing the plurality of individual channels.

19. The system according to claim 18 , wherein the outlet chamber forms an angle of inclination made up of outlets from the plurality of individual channels facing the outlet pipe with a slope of orientation analogous to an orientation of a slope of a flare at the inlet of the outlet pipe.

20. The system according to claim 13 , wherein the secondary heat production device comprises two bodies, respectively an inlet body and an outlet body, having arranged respectively therein, for the inlet body the inlet pipe extended by the inlet chamber, and for the outlet body the outlet pipe extended by the outlet chamber, the two bodies interconnected by the plurality of individual channels and coupled to respective junctions of the flow channel.