Patent ID: 9746178
Date: 2017-08-29
CPC Classifications: F23C,F23G,F23K,F23L,F23N,Y02E

Claim:
1. A self-regenerative combustion system comprising: a single burner configured to introduce fuel in a combustion chamber and having a hollow body including at least two first chambers separated from each other and configured to respectively introduce oxydizing agent into said combustion chamber and receive, at the same time, combustion waste gases aspired from said combustion chamber, or vice versa; a regeneration body connected to the burner and located outside the hollow body of the burner, the regeneration body including two second chambers separated from each other and configured respectively to preheat the oxydizing agent in its passage towards the burner and to recover heat from the combustion fumes coming from the burner, or vice versa; a first chamber of said two second chambers being in communication with a first chamber of the burner, and a second chamber of said second chambers being in communication with a second chamber of the burner; a four-way switching valve located outside the burner and regeneration bodies connected to the regeneration body and including two reciprocally separate third chambers that are movable inside the switching valve to define a first position, a second position and a third position of the switching valve and wherein the regeneration body fluidically connects the switching valve and the burner; the system being configured so that one of the two third chambers, the first chamber of said second chambers and the first chamber of the burner define a first path, while the other of the two third chambers, the second chamber of said second chambers and the second chamber of the burner define a second path different from the first path, and configured so that in the first position of the switching valve the oxydizing agent follows the first path and the combustion waste gases follow the second path in the opposite direction; in the second position of said switching valve the oxydizing agent follows the second path and the combustion waste gases follow the first path in the opposite direction; and in the third position of the switching valve, said valve closes the first path and the second path determining the shutdown of the combustion system.