A flame hole unit structure of a combustion apparatus provided with a plurality of flame holes for forming a flame comprises: a lean flame hole unit including, as a flame hole for jetting lean gas, at least one lean flame hole extending along the longitudinal direction which is a direction perpendicular to the jetting direction of the lean gas; and a rich flame hole unit including, as a flame hole for jetting rich gas, a pair of rich flame hole provided on both sides of the lean flame hole unit with respect to a width direction which is a direction perpendicular to the jetting direction and the longitudinal direction and extending along a direction parallel to the longitudinal direction. When a region, which is defined at the top end of the rich flame hole by means of first and second lines that are arbitrary imaginary lines across the rich flame hole, and by means of a pair of rich flame hole walls spaced apart along the width direction and forming a part of the rich flame hole between the first and second lines, is referred to as a reference region, then the rich flame hole includes a region which is designed such that, at the time of generating the flame by the rich gas, between arbitrary reference regions of the same size, the sum of the amounts of heat transferred to the pair of rich flame hole walls forming each reference region is substantially the same.

A baffle assembly and burner including the baffle assembly. The baffle assembly includes a collar having a central axis and an inner circumferential surface. A plurality of vanes are secured to the inner circumferential surface of the collar. Each vane includes a leg extending from the collar at a first angle with respect to the central axis. The first angle of the leg is configured to impart rotation to a flow of fluid through the baffle assembly. An impingement plate extends from the leg at a second angle with respect to the central axis. The second angle is greater than the first angle.

A flame port unit structure of a combustion apparatus provided with a plurality of flame ports for forming a flame comprises: a lean flame port unit, as a flame port for jetting lean gas, including a plurality of lean flame ports arranged along a width direction which is perpendicular to the jetting direction of the lean gas; and a rich flame port unit, as a flame port for jetting rich gas, including a pair of rich flame ports provided on both sides of the lean flame port unit with respect to a width direction, wherein the lean flame port unit comprises a first region in which a gap along the width direction of the lean flame port is formed along a longitudinal direction which is perpendicular to the jetting direction and the width direction, and a second region, provided on both sides along the longitudinal direction of the first region.

A combustor is provided, including a pipe and a burner tray. The pipe is transverse U-shaped, including a first pipe section and a second pipe section. The first pipe section has an inlet, and the second pipe section has an outlet extending along an axial direction thereof. The second pipe section has at least one reduced section, wherein a smallest sectional area in the reduced section is smaller than sectional areas on both sides of the reduced section. The burner tray is connected to the second pipe section, provided over the outlet, and has a plurality of flame holes which communicate with the outlet. Whereby, with the reduced section, the flow including gas could be evenly delivered to the burner tray. As a result, after the gas exhausted through the flame holes is ignited, the combustion range would be evener, which enhances the combustion efficiency.

A flame port structure for burning a gas includes a first continuous spiral strip, a second continuous spiral strip and a first outflow passage. The first continuous spiral strip has a first side edge, a second side edge and a first plurality of annular segments, and the second continuous spiral strip has a third side edge, a fourth side edge and a second plurality of annular segments, wherein each of the first plurality of annular segments and each of the second plurality of annular segments respectively have two first longitudinal opposite surfaces and two second longitudinal opposite surfaces. The first outflow passage has a first defining wall formed on each of the first respective longitudinal surfaces from the first side edge to the second side edge. The first outflow passage is structured so that the gas produces a specific combustion.

The present invention is a burner flame detector to detect a flame at a farthest end of a burner using a flame rectification rod. It comprises of a rod-element comprising of an inner electric-wire, an electrically insulating material surrounding the inner electric-wire, a metallic tubular outer rod protecting the insulating material and the inner electric-wire. The metallic tubular outer rod is electrically insulated from the inner electric-wire, and a flame rectification sensor is attached to the rod-element at the farthest end of the burner, which goes through the flame. The flame rectification sensor becomes exposed to a flame and sends a flame rectified signal to a controller, through the inner electric-wire.

A combustion system includes a fuel and oxidant source and a flame holder. The flame holder includes a plurality of discrete slats arranged in parallel defining combustion channels between adjacent slats. The fuel and oxidant source outputs fuel and oxidant into the combustion channels. The flame holder holds a combustion reaction of the fuel and oxidant in the combustion channels.

A gas burner system comprising a longitudinal burner body defining a longitudinal central cavity, and a ribbon pack configured to be removably installed into the central cavity, the ribbon pack comprising: (i) at least one ribbon positioned between a first vertical wall and a second vertical wall; (ii) a first transverse arm extending horizontally outward from a first longitudinal side of the ribbon pack; (iii) a second transverse arm extending horizontally outward from a second longitudinal side of the ribbon pack, wherein the first and second transverse arms are configured to attach to the longitudinal burner body.

A baffle assembly and burner including the baffle assembly. The baffle assembly includes a collar having a central axis and an inner circumferential surface. A plurality of vanes are secured to the inner circumferential surface of the collar. Each vane includes a leg extending from the collar at a first angle with respect to the central axis. The first angle of the leg is configured to impart rotation to a flow of fluid through the baffle assembly. An impingement plate extends from the leg at a second angle with respect to the central axis. The second angle is greater than the first angle.

The present invention is a burner flame detector to detect a flame at a farthest end of a burner using a flame rectification rod. It comprises of a rod-element comprising of an inner electric-wire, an electrically insulating material surrounding the inner electric-wire, a metallic tubular outer rod protecting the insulating material and the inner electric-wire. The metallic tubular outer rod is electrically insulated from the inner electric-wire, and a flame rectification sensor is attached to the rod-element at the farthest end of the burner, which goes through the flame. The flame rectification sensor becomes exposed to a flame and sends a flame rectified signal to a controller, through the inner electric-wire.