JPS5916659Y2 - gas burner - Google Patents

Description

[Detailed Description of the Invention] The present invention provides an all-secondary air type gas burner with good combustion conditions.

As shown in Fig. 2, a conventional all-secondary air type gas burner has a premixing zone Y where secondary air and raw gas are mixed, and a combustion zone M where a mixed gas of secondary air and gas is combusted. The boundary is confused, and depending on the type of gas, the flame transfers from the combustion zone M to the premixing zone Y, and a flame transfer noise is generated at the boundary B from beginning to end, and combustion is incomplete due to this, resulting in CO/CO2. There were drawbacks such as non-standard or red-hot unevenness.

The present invention eliminates the above-mentioned conventional drawbacks, and an embodiment thereof will be described in detail below.

1 is an all-secondary air type gas burner that does not require temporary air and burns only with secondary air; 2 is a combustion inner cylinder made of punching metal, etc., and an inner cylinder cap 3 is fitted to the upper end. .

Numeral 4 is a plurality of air holes formed in the inner cylinder cap 3, and 5 is a porous air rectifying plate fixed to the lower inner wall of the combustion inner cylinder 2, which has the function of rectifying combustion air from below.

Reference numeral 6 denotes a combustion outer cylinder made of a porous heat-resistant plate such as punched metal, into which secondary air flows through multiple holes 7.

Reference numeral 8 denotes a combustion glowing cylinder made of a porous heat-resistant plate such as punched metal or lath mesh and connected to the combustion outer cylinder 6, and 9 is a ring-shaped flame transfer prevention plate made of a perforated plate such as wire mesh punched metal. The mixture of combustion air and gas flows through the space formed by the combustion inner cylinder 2, the combustion outer cylinder 6, and the combustion glow cylinder 8 almost horizontally from the connecting part of the combustion cylinder 6 and the combustion glowing cylinder 8. It is divided into a combustion zone where it burns.

Reference numeral 10 denotes a gas ejection ring through which raw gas is ejected upward from the ejection port.

Reference numeral 11 denotes a heat shielding cylinder, 12 a cylinder made of heat-resistant glass, and 13 a top cap fixed to the upper end of the cylinder 12.

When the ignition operation is started now, the pilot flame H of the pilot burner 14 hits the outer surface of the combustion cylinder 6 and ignites the mixture of the gas ejected from the gas ejection ring 10 and the secondary air.

The lower part of the fire transfer prevention plate 9 becomes a premixing area Y where secondary air and gas are premixed, and the upper part becomes a combustion area M.
In particular, ignition flames are formed in the flame holes 15 and 16 of the combustion inner tube 2 and the combustion glowing tube 8, respectively, and the inner tube 2 and the glowing tube 8 become red hot and emit infrared rays to provide heating.

As described above, the present invention is capable of preventing backfire to the lower part of the flame transfer prevention plate for any type of gas, and also enables stable and quiet combustion with less uneven red heat.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an all-secondary air type gas burner according to an embodiment of the present invention, and FIG. 2 is a sectional view of a conventional all-secondary air type gas burner. 2... Combustion inner cylinder, 8... Combustion red-hot cylinder,
9... Fire transfer prevention board.

Claims (1)

[Scope of utility model registration request] a porous combustion inner cylinder having an inner cylinder cap on the upper surface and an air baffle plate on the lower part; a porous combustion outer cylinder provided approximately concentrically with the combustion inner cylinder and around its outer periphery; a porous combustion incandescent body connected to the upper part of the cylinder; a heat shielding cylinder provided around the outer periphery of the combustion outer cylinder; and a heat-resistant glass cylinder provided around the outer periphery of the combustion incandescent body. , a gas ejection ring provided at a lower part between the combustion inner cylinder and the combustion outer cylinder, and a porous gas injection ring that partitions a premixing area and a combustion area between the combustion inner cylinder and the combustion glowing cylinder. A gas burner equipped with a flame transfer prevention plate.