System for automatic feeding of furnaces with liquid fuel

Abstract

A device for automatic feeding liquid fuel ( 2 ) to a furnace with comprising a power system for igniting, extinguishing, and monitoring the level of liquid fuel ( 2 ) in the furnace ( 1 ), said power system comprising a main power switch ( 9 ), a control circuit ( 3 ), a sensor of liquid fuel level ( 25 ), a fuel quality sensor ( 12 ), a first degree safety sensor ( 16 ), an additional safety sensor ( 15 ), a protective circuit ( 17 ), a supply circuit ( 18 ) and a spark generator ( 26 ); and said power system being remote-controlled; a fuel system for feeding liquid fuel ( 2 ) from a removable fuel tank ( 24 ) to the furnace ( 1 ) via a fuel pipe ( 13 ) and a solenoid valve ( 14 ); and an air system for generating of pressure to supply liquid fuel ( 2 ) to the furnace ( 1 ) comprising a power air pump ( 28 ).

1 . A device for automatic feeding of liquid fuel ( 2 ) to a furnace with comprising
 a power system for igniting, extinguishing, and monitoring the level of liquid fuel ( 2 ) in the furnace ( 1 ), said power system comprising a main power switch ( 9 ), a control circuit ( 3 ), a sensor of liquid fuel level ( 25 ), a fuel quality sensor ( 12 ), a first degree safety sensor ( 16 ), an additional safety sensor ( 15 ), a protective circuit ( 17 ), a supply circuit ( 18 ) and a spark generator ( 26 );   a fuel system for feeding liquid fuel ( 2 ) from a removable fuel tank ( 24 ) to the furnace ( 1 ) via a fuel pipe ( 13 ) and a solenoid valve ( 14 ); and   an air system for generating of pressure to supply liquid fuel ( 2 ) to the furnace ( 1 ) comprising a power air pump ( 28 );   wherein   said fuel quality sensor ( 12 ) is installed in said fuel pipe ( 13 ) of said fuel system upstream of said solenoid valve ( 14 );   said additional safety sensor ( 15 ) is installed in the furnace ( 1 ) above said first degree safety sensor ( 16 ) and is connected to said protective circuit ( 17 ); and   said protective circuit ( 17 ) is connected to said main power switch ( 9 ).   
   
   
       2 . The device of  claim 1 , wherein the furnace ( 1 ) is a fireplace ( 8 ). 
   
   
       3 . The device of  claim 1 , wherein said power system is remote-controlled. 
   
   
       4 . The device of  claim 1 , wherein
 said furnace comprises a combustion chamber ( 33 ) connected to a separated sensor chamber ( 34 );   said fuel level sensor ( 25 ), said first degree safety sensor ( 16 ), said additional safety sensor ( 15 ), and a fuel inlet ( 35 ) are disposed in said separated sensor chamber ( 34 );   said separated sensor chamber ( 34 ) is closed from its top with a cover ( 36 ) having a plurality of ventilating holes ( 37 ) and a formed screen ( 38 ); and   a sliding screen ( 20 ) for closing said combustion chamber ( 33 ) is engaged with a servo-mechanism ( 19 ).   
   
   
       5 . The device of  claim 4 , wherein
 said control circuit ( 3 ) comprises a motion sensor ( 21 ), a micro-loudspeaker ( 22 ), a reset button ( 23 ), and a power-on button ( 5 ), which are installed in a control panel ( 6 ), and   said control circuit ( 3 ) is connected with said servo-mechanism ( 19 ).   
   
   
       6 . The device of  claim 1 , wherein said supply circuit ( 18 ) comprises a system of buffer feeding connected with the main power switch ( 9 ), a low-voltage feeder ( 30 ), a battery ( 31 ), and a blocking diode ( 32 ). 
   
   
       7 . A method for operating the device of  claim 1 , the method comprising
 generating a signal to switch on said control circuit ( 3 ), which in turn turns on said power air pump ( 28 ) for generating positive gauge pressure in the fuel tank ( 24 ) and opens said solenoid valve ( 14 ) feeding the furnace ( 1 ) with liquid fuel ( 2 ); and simultaneously turning on said fuel quality sensor ( 12 ) which monitors the flowing liquid fuel ( 2 ), and the fuel level sensors ( 25 ), and the safety sensors ( 15 ,  16 ); and   upon filling of the furnace ( 1 ) with liquid fuel, ( 2 ), generating a spark in said spark generator ( 26 ).   
   
   
       8 . The method of  claim 7  further comprising turning on indicating diodes ( 10 ,  11 ) to indicate to a user that the system in a working mode. 
   
   
       9 . The method of  claim 7  further comprising the control circuit ( 3 ) automatically turning on during operation and processing information about conditions of the feeding system. 
   
   
       10 . The method of  claim 7  further comprising in case of a failure of the first degree protection sensor ( 16 ), turning on said additional safety sensor ( 15 ). 
   
   
       11 . The method of  claim 10  wherein turning on said additional safety sensor ( 15 ) results in an automatic isolation of the feeding circuit ( 18 ) and due to this turning off of the system operation mode.