Patent ID: 7955072

Claim:
A forced air supply combustion apparatus, comprising: a combustion housing, a burner unit including a plurality of burners provided side by side in a horizontal direction is arranged in the combustion housing, and an air supply chamber in a lower part partitioned by a partition plate from an arrangement section of the burner unit and a primary air chamber in a front part that stands from a front end of the air supply chamber, wherein air from a combustion fan connected to an air supply port opened on a bottom surface of the air supply chamber flows to the primary air chamber through the air supply chamber; and primary air is supplied from the primary air chamber to the respective burners of the burner unit, and wherein a plurality of projected rims projected downward are provided on a lower surface of the partition plate to connect a plurality of upstream side section points set around a portion of the partition plate, which is opposed to the air supply port, with a space formed between the section points in a peripheral direction of the portion of the partition plate and a plurality of downstream side section points set at a front edge of the partition plate with a space formed between the section points in the horizontal direction of the partition plate.