Patent ID: 7931468

Claim:
An all primary combustion burner, comprising: a rectangular combustion plate in which a plurality of burner ports are formed; and a burner main body of a box shape having an opening in which the combustion plate is inserted, with a longitudinal direction, a latitudinal direction, and a normal direction of the combustion plate set as an X axis direction, a Y axis direction, and a Z axis direction, respectively, a partition plate that demarcates a mixing chamber between the partition plate and a bottom wall section of a burner main body opposed to the combustion plate in the Z axis direction and a distributing plate that sections a space between the partition plate and the combustion plate into two chambers in the Z axis direction, which is a first distributing chamber on the partition plate side and a second distributing chamber on the combustion plate side, being provided in the burner main body, the all primary combustion burner mixing a fuel gas flowing into the mixing chamber from an upstream side in the X axis direction and a primary air in the mixing chamber to generate an air fuel mixture, guiding the air fuel mixture from an outlet formed in the partition plate to the combustion plate through the first distributing chamber, a plurality of distributing holes formed in the distributing plate, and the second distributing chamber, and jetting the air fuel mixture from burner ports of the combustion plate to subject the air fuel mixture to all primary combustion, wherein the outlet is formed widely in the Y axis direction in a portion on a downstream side in the X axis direction of the partition plate, and a guide plate section is provided by the partition plate, said guide plate section extending from an upstream edge of the outlet, toward a downstream edge of the outlet, where said upstream edge is disposed on an upstream side in the X axis direction of the outlet and said downstream edge is disposed on a downstream side in the X axis direction of the outlet, where the guide plate section is angled in the Z axis direction relative to the partition plate and the outlet, such that the guide plate section extends from the upstream edge of the outlet toward the bottom wall section of the burner main body, wherein a first baffle plate that prevents the air fuel mixture having passed the opening portion closer to the edge on the downstream side in the X axis direction of the outlet from flowing straight in the Z axis direction toward the distributing plate is provided, wherein the first baffle plate includes a base end that is secured to the burner main body.