Combustion Apparatus For Recovering Heat

Abstract

A combustion apparatus for recovering heat according to the present invention comprising a combustion tank for burning fuel contained in the interior by combustion air supplied from the exterior, characterized in that: a combustion chamber surrounded by an inner wall for burning fuel is defined in said combustion tank; a swirl flow supply chamber for supplying a combustion air into said combustion chamber is defined around the outer circumference of the inner wall of said combustion tank; a combustion air supply passage for supplying combustion air from said swirl flow supply chamber into said combustion chamber is defined on the inner wall of said combustion tank; said combustion air supply passage is slanted at a predetermined angle to the vertical direction of the inner face of the inner wall in said combustion tank; and the combustion air generates a swirl flow in the combustion chamber. Furthermore, the combustion apparatus for recovering heat according to the invention characterized in that; an air cooling chamber for supplying combustion air supplied from the exterior into said swirl flow supply chamber is defined around the outer circumference of said swirl flow supply chamber in said combustion tank, and the combustion air supplied from the exterior is supplied through said cooling chamber into the swirl flow supply chamber to decrease a heat loss and to improve a thermal efficiency.

1 . A combustion apparatus for recovering heat comprising a combustion tank for burning fuel contained in an interior of the combustion tank by combustion air supplied from exterior the combustion tank, said apparatus comprising:
 a combustion chamber surrounded by an inner wall for burning fuel is defined in said combustion tank;   a swirl flow supply chamber for supplying a combustion air into said combustion chamber is defined around an outer circumference of the inner wall of said combustion tank;   a combustion air supply passage for supplying combustion air from said swirl flow supply chamber into said combustion chamber is defined on the inner wall of said combustion tank;   said combustion air supply passage is slanted at a predetermined angle to a vertical direction of the inner face of the inner wall in said combustion tank; and   the combustion air generates a swirl flow in the combustion chamber.   
   
   
       2 . The combustion apparatus for recovering heat as claimed in  claim 1 , in which the angle of said combustion air supply passage slanted to the vertical direction of the inner face of the inner wall is from 45 to 80 degrees. 
   
   
       3 . The combustion apparatus for recovering heat as claimed in  claim 1 , in which an air cooling chamber for supplying combustion air supplied from the exterior into said swirl flow supply chamber is defined around the outer circumference of said swirl flow supply chamber in said combustion tank, and
 the combustion air supplied from the exterior is supplied through said cooling chamber into the swirl flow supply chamber to decrease a heat loss and to improve thermal efficiency.   
   
   
       4 . The combustion apparatus for recovering heat as claimed in  claim 3 , further comprising:
 a combustion air supply fan for supplying exterior air, and   a combustion air supply chamber for the air supplied from said combustion air supply fan into said air cooling chamber.   
   
   
       5 . The combustion apparatus for recovering heat as claimed in  claim 1 , in which a combustion gas exhausting tube for exhausting the combustion gas heated in said combustion chamber of said combustion tank is provided in an upper portion of said combustion tank,
 said combustion gas exhausting tube comprises;   a combustion gas inlet having an inside diameter reduced according to a moving direction of the combustion gas,   a narrowed part, and   a combustion gas outlet having an inside diameter enlarged according to the moving direction of the combustion gas.   
   
   
       6 . The combustion apparatus for recovering heat as claimed in  claim 5 , which further comprises;
 a combustion gas exhausting adjustment part installed in the combustion gas outlet of said combustion gas exhausting tube and having an outside diameter enlarged according to the moving direction of a combustion gas, and   the adjustment of exhausting the combustion gas is accomplished by rising or descending of said combustion gas exhausting adjustment part.   
   
   
       7 . The combustion apparatus for recovering heat as claimed in  claim 5 , in which a high pressure air supply part for supplying high pressure air is provided in the narrowed part of said combustion gas exhausting tube to accelerate a rotational speed of the combustion gas in said narrowed part. 
   
   
       8 . The combustion apparatus for recovering heat as claimed in  claim 7 , in which a high pressure air supply passage for supplying high pressure air into said narrowed part from said high pressure air supply part is defined in said narrowed part, and
 said high pressure air supply passage is slanted at a predetermine angle to the vertical direction of the inner face of said narrowed part.   
   
   
       9 . The combustion apparatus for recovering heat as claimed in  claim 1 , which further comprises:
 a fuel supply part for supplying fuel to be burned in said combustion tank,   said fuel supply part comprises;   a fuel hopper for storing and supplying fuel,   a horizontal screw conveyer for conveying fuel supplied from said fuel hopper, and   a vertical screw conveyer for supplying fuel conveyed from said horizontal screw conveyer into said combustion chamber, a lower part of said vertical screw conveyer is combined with said horizontal screw conveyer, and an upper part of said vertical screw conveyer is combined with the combustion chamber of said combustion tank.   
   
   
       10 . The combustion apparatus for recovering heat as claimed in  claim 9 , in which said fuel supply part further comprises a fuel driving high pressure air supply part for driving fuel conveyed from said vertical screw conveyer by means of high pressure air. 
   
   
       11 . The combustion apparatus for recovering heat as claimed in  claim 10 , in which a rotation type grate capable of rotation is installed in the lower part of said combustion chamber, and an ash outlet for discharging burned ash to the exterior is defined in the lower edge of said combustion chamber, and
 by rotating said rotation type grate the ash generated in the upper of said rotation type grate is discharged to the ash outlet.   
   
   
       12 . The combustion apparatus for recovering heat as claimed in any one of  claim 11 , which further comprises:
 an ash discharge part for discharging the ash generated in said combustion chamber to the exterior,   said ash discharge part comprises;   an ash discharge collection tank installed in the lower of said combustion tank for collecting the ash discharged from said ash outlet, the upper of said discharge collection tank is communicated with said ash outlet,   an ash discharge valve for adjusting the discharge of the ash collected in said discharge collection tank, and   an ash discharge screw conveyer for conveying the ash discharged from said ash discharge collection tank through said ash discharge valve to the exterior.   
   
   
       13 . A combustion apparatus for recovering heat comprising a combustion tank for burning fuel contained in an interior of the combustion tank by combustion air supplied from exterior the combustion tank, said apparatus comprising:
 a combustion chamber surrounded by an inner wall for burning fuel is defined in said combustion tank;   a swirl flow supply chamber for supplying a combustion air into said combustion chamber is defined around an outer circumference of the inner wall of said combustion tank;   a combustion air supply passage is defined on the inner wall of said combustion tank for supplying combustion air from said swirl flow supply chamber into said combustion chamber;   a combustion air supply nozzle is defined on the inner wall of said combustion tank, the combustion air supply nozzle is in communication with the combustion air supply passage and is slanted at a predetermined angle to a vertical direction of the inner face of the inner wall in said combustion tank; and   the combustion air generates a swirl flow in the combustion tank.   
   
   
       14 . The combustion apparatus for recovering heat as claimed in  claim 13 , in which the angle of said combustion air supply nozzle slanted to the vertical direction of the inner face of the inner wall is from 45 to 80 degrees. 
   
   
       15 . The combustion apparatus for recovering heat as claimed in  claim 13 , in which an air cooling chamber for supplying combustion air supplied from the exterior into said swirl flow supply chamber is defined around the outer circumference of said swirl flow supply chamber in said combustion tank, and
 the combustion air supplied from the exterior is supplied through said cooling chamber into the swirl flow supply chamber to decrease a heat loss and to improve thermal efficiency.   
   
   
       16 . The combustion apparatus for recovering heat as claimed in  claim 15 , further comprising:
 a combustion air supply fan for supplying exterior air, and   a combustion air supply chamber for the air supplied from said combustion air supply fan into said air cooling chamber.   
   
   
       17 . The combustion apparatus for recovering heat as claimed in  claim 13 , in which a combustion gas exhausting tube for exhausting the combustion gas heated in said combustion chamber of said combustion tank is provided in an upper portion of said combustion tank,
 said combustion gas exhausting tube comprises;   a combustion gas inlet having an inside diameter reduced according to a moving direction of the combustion gas,   a narrowed part, and   a combustion gas outlet having an inside diameter enlarged according to the moving direction of the combustion gas.   
   
   
       18 . The combustion apparatus for recovering heat as claimed in  claim 17 , which further comprises:
 a combustion gas exhausting adjustment part installed in the combustion gas outlet of said combustion gas exhausting tube and having an outside diameter enlarged according to the moving direction of a combustion gas, and   the adjustment of exhausting the combustion gas is accomplished by rising or descending of said combustion gas exhausting adjustment part.   
   
   
       19 . The combustion apparatus for recovering heat as claimed in  claim 17 , in which a high pressure air supply part for supplying high pressure air is provided in the narrowed part of said combustion gas exhausting tube to accelerate a rotational speed of the combustion gas in said narrowed part. 
   
   
       20 . The combustion apparatus for recovering heat as claimed in  claim 19 , in which a high pressure air supply passage for supplying high pressure air into said narrowed part from said high pressure air supply part is defined in said narrowed part, and
 said high pressure air supply passage is slanted at a predetermine angle to the vertical direction of the inner face of said narrowed part.   
   
   
       21 . The combustion apparatus for recovering heat as claimed in  claim 13 , which further comprises:
 a fuel supply part for supplying fuel to be burned in said combustion tank,   said fuel supply part comprises;   a fuel hopper for storing and supplying fuel,   a horizontal screw conveyer for conveying fuel supplied from said fuel hopper, and   a vertical screw conveyer for supplying fuel conveyed from said horizontal screw conveyer into said combustion chamber, a lower part of said vertical screw conveyer is combined with said horizontal screw conveyer, and an upper part of said vertical screw conveyer is combined with the combustion chamber of said combustion tank.   
   
   
       22 . The combustion apparatus for recovering heat as claimed in  claim 21 , in which said fuel supply part further comprises a fuel driving high pressure air supply part for driving fuel conveyed from said vertical screw conveyer by means of high pressure air. 
   
   
       23 . The combustion apparatus for recovering heat as claimed in  claim 13 , in which a rotation type grate capable of rotation is installed in a lower part of said combustion chamber, and an ash outlet for discharging burned ash to the exterior is defined in a lower edge of said combustion chamber, and
 by rotating said rotation type grate the ash generated in an upper portion of said rotation type grate is discharged to the ash outlet.   
   
   
       24 . The combustion apparatus for recovering heat as claimed in any one of  claim 23 , which further comprises:
 an ash discharge part for discharging the ash generated in said combustion chamber to the exterior,   said ash discharge part comprises;   an ash discharge collection tank installed in the lower of said combustion tank for collecting the ash discharged from said ash outlet, the upper of said discharge collection tank is communicated with said ash outlet,   an ash discharge valve for adjusting the discharge of the ash collected in said discharge collection tank, and   an ash discharge screw conveyer for conveying the ash discharged from said ash discharge collection tank through said ash discharge valve to the exterior.   
   
   
       25 . A combustion apparatus for recovering heat comprising a combustion tank for burning fuel contained in an interior of the combustion tank by combustion air supplied from exterior the combustion tank, said apparatus comprising:
 a combustion chamber surrounded by an inner wall for burning fuel is defined in said combustion tank;   an ash outlet is defined on the inner wall of said combustion tank;   an ash discharge chamber is defined around an outer circumference of the inner wall of said combustion tank, ash discharged through the ash outlet is entered into the ash discharge chamber;   a swirl flow supply chamber for supplying combustion air into said combustion chamber is defined around the outer circumference of said ash discharge chamber;   a combustion air supply nozzle is defined between said swirl flow supply chamber and said combustion chamber for supplying combustion air from said swirl flow supply chamber into said combustion chamber, the combustion air supply nozzle is slanted at a predetermined angle to a vertical direction of the inner face of the inner wall in said combustion tank; and   the combustion air generates a swirl flow in the combustion tank.   
   
   
       26 . The combustion apparatus for recovering heat as claimed in  claim 25 , in which the angle of said combustion air supply nozzle slanted to the vertical direction of the inner face of the inner wall is from 45 to 80 degrees. 
   
   
       27 . The combustion apparatus for recovering heat as claimed in  claim 25 , in which an air cooling chamber for supplying combustion air supplied from the exterior of the combustion tank into said swirl flow supply chamber is defined around an outer circumference of said swirl flow supply chamber in said combustion tank, and
 the combustion air supplied from the exterior is supplied through said cooling chamber into the swirl flow supply chamber to decrease a heat loss and to improve thermal efficiency.   
   
   
       28 . The combustion apparatus for recovering heat as claimed in  claim 27 , further comprising:
 a combustion air supply fan for supplying exterior air, and   a combustion air supply chamber for the air supplied from said combustion air supply fan into said air cooling chamber.   
   
   
       29 . The combustion apparatus for recovering heat as claimed in  claim 25 , in which
 a combustion gas exhausting tube for exhausting the combustion gas heated in said combustion chamber of said combustion tank is provided in an upper portion of said combustion tank,   said combustion gas exhausting tube comprises;   a combustion gas inlet having an inside diameter reduced according to a moving direction of the combustion gas,   a narrowed part, and   a combustion gas outlet having an inside diameter enlarged according to the moving direction of the combustion gas.   
   
   
       30 . The combustion apparatus for recovering heat as claimed in  claim 29 , which further comprises:
 a combustion gas exhausting adjustment part installed in the combustion gas outlet of said combustion gas exhausting tube and having an outside diameter enlarged according to the moving direction of a combustion gas, and   the adjustment of exhausting the combustion gas is accomplished by rising or descending of said combustion gas exhausting adjustment part.   
   
   
       31 . The combustion apparatus for recovering heat as claimed in  claim 29 , in which
 a high pressure air supply part for supplying high pressure air is provided in the narrowed part of said combustion gas exhausting tube to accelerate a rotational speed of the combustion gas in said narrowed part.   
   
   
       32 . The combustion apparatus for recovering heat as claimed in  claim 31 , in which a high pressure air supply passage for supplying high pressure air into said narrowed part from said high pressure air supply part is defined in said narrowed part, and
 said high pressure air supply passage is slanted at a predetermine angle to the vertical direction of the inner face of said narrowed part.   
   
   
       33 . The combustion apparatus for recovering heat as claimed in  claim 25 , which further comprises:
 a fuel supply part for supplying fuel to be burned in said combustion tank,   said fuel supply part comprises;   a fuel hopper for storing and supplying fuel,   a horizontal screw conveyer for conveying fuel supplied from said fuel hopper, and   a vertical screw conveyer for supplying fuel conveyed from said horizontal screw conveyer into said combustion chamber, a lower part of said vertical screw conveyer is combined with said horizontal screw conveyer, and an upper part of said vertical screw conveyer is combined with the combustion chamber of said combustion tank.   
   
   
       34 . The combustion apparatus for recovering heat as claimed in  claim 33 , in which said fuel supply part further comprises a fuel driving high pressure air supply part for driving fuel conveyed from said vertical screw conveyer by means of high pressure air. 
   
   
       35 . The combustion apparatus for recovering heat as claimed in  claim 25 , in which a rotation type grate capable of rotation is installed in a lower part of said combustion chamber, and an ash outlet for discharging burned ash to the exterior is defined in a lower edge of said combustion chamber, and
 by rotating said rotation type grate the ash generated in an upper portion of said rotation type grate is discharged to the ash outlet.   
   
   
       36 . The combustion apparatus for recovering heat as claimed in  claim 35 , which further comprises;
 an ash discharge part for discharging the ash generated in said combustion chamber to the exterior,   said ash discharge part comprises;   an ash discharge collection tank installed in a lower portion of said combustion tank for collecting the ash discharged from said ash outlet and said ash discharge chamber, an upper portion of said discharge collection tank is communicated with said ash outlet and a lower portion of said ash discharge chamber,   an ash discharge valve for adjusting the discharge of the ash collected in said discharge collection tank, and   an ash discharge screw conveyer for conveying the ash discharged from said ash discharge collection tank through said ash discharge valve to the exterior.