Combustion apparatus

Abstract

In a combustion apparatus that includes a combustion plate having a burner frame with a shape of a picture frame, which covers an open surface of a burner body, and a frame flange part outwardly extending from a side plate part, which is sandwiched between a body flange part of the burner body and a box flange part of a combustion box, which is fastened to the body flange part, a projecting part(s) positioning the burner frame with respect to the combustion box, which comes into contact with, or comes close to and is disposed opposite to an inner surface of the combustion box is provided with the side plate part of the burner frame. Preferably, the projecting part(s) is provided at a portion away from an end of a side of an opening peripheral edge part of the side plate part to a side of the frame flange part.

What is claimed is: 
     
         1 . A combustion apparatus comprising,
 a burner constituted by a burner body an inside of which an air-fuel mixture is supplied to and a combustion plate covering an open surface of the burner body; and   a combustion box having, at an end, a box flange part that is fastened to a body flange part enclosing the open surface of the burner body,   wherein the combustion plate has a burner frame with a shape of a picture frame and an air-fuel mixture permeable body covering an opening enclosed by the burner frame from a burner-body side, through which the air-fuel mixture permeates, and   wherein the burner frame has an opening peripheral edge part around the opening, a side plate part bending from the opening peripheral edge part to the burner-body side, and a frame flange part outwardly extending from an end of the burner-body side of the side plate part and being sandwiched between the body flange part and the box flange part,   wherein:   a projecting part(s) positioning the burner frame with respect to the combustion box, which comes into contact with, or comes close to and is disposed opposite to an inner surface of the combustion box is provided with the side plate part of the burner frame.   
     
     
         2 . The combustion apparatus as claimed in  claim 1 , wherein the projecting part(s) is provided at a portion that is away from an end of a side of the opening peripheral edge part of the side plate part to a side of the frame flange part. 
     
     
         3 . The combustion apparatus as claimed in  claim 1 , wherein the projecting part(s) is provided with only a plurality of portions of the side plate part, which are separated in a circumferential direction. 
     
     
         4 . The combustion apparatus as claimed in  claim 2 , wherein the projecting part(s) is provided with only a plurality of portions of the side plate part, which are separated in a circumferential direction.