Burner for gas boiler

Abstract

The present invention relates to a burner for gas boiler that produces stable combustion without lifting of flame by stably guiding gas and primary and secondary air to the inside of an upper plate and having a first slope having main fire holes to improve efficiency of ignition and combustion in a burner main body, in which a gas mixture channel is formed by a guide plate disposed at the center of the burner main bodyburner bodyor stable mixing of gas and the primary air.

1 . A burner for gas boiler comprising:
 a casing that has a space inside;   a fan that is connected to the lower side of the casing and supplies the external air into the casing;   a nozzle unit that is connected to a side of the casing and injects gas at high speed through the front end disposed inside the casing;   a burner main body that is disposed from a predetermined distance from the bottom of the casing and has a burner upper plate having main fire holes formed at regular distances at both sides in the longitudinal direction of a burner body and a burner lower plate connected to the lower side of the burner upper plate and having a polygonal cross section;   a venturi plate that is disposed on an open side of the burner main body, at the front of the nozzle unit, and has a venturi hole allowing primary air mixed with the gas injected from the nozzle unit to flow into the burner main body;   an end plate that is disposed on the other side of the burner main body, facing the venturi plate; and   a guide plate that is horizontally disposed at the center inside the burner main body and guides the gas mixture of the gas and the primary air generated by the nozzle unit to the upper portion of the burner main body.   
     
     
         2 . The burner according to  claim 1 , wherein the burner upper plate and the burner lower plate are made of different materials. 
     
     
         3 . The burner according to  claim 1 , wherein the burner upper plate has:
 a first horizontal surface having ignition holes spaced part from each other to allow ignition to transfer to the main fire holes formed through the burner upper plate; and   first slopes that are each integrally formed with the first horizontal surface in the longitudinal direction, and extend downward from the first horizontal surface at a predetermined angle, while the end is bent downward, and   the burner lower plate has:   second slopes that extend inside and downward from the lower first slopes; and   a second horizontal surface that is horizontally and integrally formed with the second slopes.   
     
     
         4 . The burner according to  claim 3 , wherein the main fire holes are formed through the first slopes of the burner upper plate. 
     
     
         5 . The burner according to  claim 3 , wherein the first slopes are inclined at an angle between 40° to 50° to minimize lifting of flame through the main fire holes. 
     
     
         6 . The burner according to  claim 1 , wherein the guide plate is positioned such that one end is in contact with the venturi plate and the other end is spaced apart from the end plate to allow the primary air supplied from the nozzle unit and the fan to smoothly flow to the burner upper plate. 
     
     
         7 . The burner according to  claim 1 , wherein at least one or more burner bodies are provided in the casing. 
     
     
         8  The burner according to  claim 1 , wherein a secondary air diffusion plate, of which one end is connected to the casing and the burner main body, horizontally extending toward the nozzle unit and the other end has a bending wall bending upward and having fixing holes where the venturi hole of the venturi plate in inserted and fixed, is disposed under the burner main body, and
 a plurality of secondary air-through holes are formed through the secondary air diffusion plate.