Hot water tank attached to boiler

Abstract

Provided is a hot water tank attached to a boiler. Water flows along a buffer tank as well as a hot water coil by providing the buffer tank and the hot water coil in an outer tank. Heat source applies heat water between the outer tank and the buffer tank while flowing therebetween. A significant amount of hot water IS supplied, and the temperature variation of the hot water is reduced.

1 . A hot water tank attached to a boiler comprising:
 an outer tank ( 110 ) having a space therein;   a buffer tank ( 120 ) installed at a central axis inside the outer tank ( 110 ) to temporarily store and supply hot water;   a hot water coil ( 130 ) installed between the outer tank ( 110 ) and the buffer thank ( 120 ) and having a one-side water entrance end linked with an outside through the outer tank ( 110 ) and an opposite-side water exit end linked with the buffer tank ( 120 );   a first supply port ( 141 ) linked with the one-side water entrance end of the hot water coil ( 130 );   a first discharge port ( 142 ) linked with the buffer tank ( 120 );   a second supply port ( 151 ) linked with one side of the outer tank ( 110 ) to supply heat source to heat water discharged through the first discharge port ( 142 ) after the water has been supplied through the first supply port ( 141 ); and   a second discharge port ( 152 ) linked with an opposite side of the outer tank ( 110 ) to discharge the heat source supplied to the second supply port ( 151 ).   
     
     
         2 . The hot water tank of  claim 1 , wherein city water or pre-heated water is supplied to the first supply port ( 141 ), and the hot water heated by the heat source is discharged through the first discharge port ( 142 ). 
     
     
         3 . The hot water tank of  claim 2 , wherein the heat source is water heated by the boiler, the heated source is supplied to the second supply port ( 151 ), and heating circulation water discharged from the second discharge port ( 152 ) is collected to the boiler. 
     
     
         4 . The hot water tank of one of  claims 1  to  3 , wherein both upper and lower end portions of the buffer tank ( 120 ) or both left and right end portions of the buffer tank ( 120 ) are exposed out of the outer tank ( 110 ), and the first discharge port ( 142 ) is provided in a portion of the buffer tank ( 120 ) exposed to the outside.