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1. (WO2017183047) COOLING SYSTEM
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CLAIMS

1. Improved cooling system comprising:

- a containing case (3) ;

at least one filter and fan assembly (1) , preferably inserted in a wall of said containing case (3) ;

- at least one filter (2) inserted in a wall of said containing case (3) and equipped with a protecting grid placed inside said containing case (3);

- at least one sensitive thermal-resistive element (11) applied onto the grid of every filter (2) ; and

- a control unit (10) connected to said sensitive thermal-resistive element (11) ;

wherein said sensitive thermal-resistive element (11) has a thermal capability such that, with a power, and therefore a current, lower than 100 mW, a self-heating effect is obtained in unmoving air.

2. Cooling system according to claim 1, characterized in that, by supplying said sensitive thermal-resistive element (11) with said current, and by exploiting a variation of an ohmic resistance when the temperature changes, it is possible to estimate the amount of air necessary for removing the developed thermal power, in order to afterwards acquire the data through said control unit (10) .

3. Cooling system according to claim 1 or 2, characterized in that it also operates as meter of an internal temperature of said case (3) .

4. Cooling system according to any one of the previous claims, characterized in that said sensitive thermal-resistive element (11) is exposed to an air flow which penetrates inside said case (3) and said control unit (10) placed inside said case (3) is adapted to manage the signal received from said sensitive element (11) through the use of a microcontroller, and also to integrate a thermostatic function.

5. Cooling system according to claim 4, characterized in that a measure of the air flow is then used by the control unit (10) for a visual or remotely-transmitted signal.

6. Cooling system according to any one of the previous claims, characterized in that said sensitive thermal-resistive element (11) is appled onto the internal grid of the filter (2) by means of a fastening element which is suited to different types of filter (2) size.

7. Cooling system according to any one of the previous claims, characterized in that it operates as thermostat capable of generating the alarms and/or of checking the speed of the fan of said filter and fan assembly (1) , threby replacing a further component inside said case (3) .

8. Cooling system according to any one of the previous claims, characterized in that it operates for performing the measure of the air flow-rate, on which an alarm signal can be placed, which can be remotely transmitted outside and which, in a limit case, physically intervenes on users inside said case (3) .