US-12618554-B2 - Burner component and burner

US12618554B2US 12618554 B2US12618554 B2US 12618554B2US-12618554-B2

Abstract

A burner contains a burner component. The burner component includes a main frame and at least one stable burning isolation strip. An interior of the main frame is divided into at least two ventilation areas by the stable burning isolation strip in a gas channel direction. Several separation mechanisms are arranged in each ventilation area and divide the ventilation area into several through holes distributed in the gas channel direction. The through holes are used for a mixed gas of fuel gas and air to pass through and enhancing a mixing effect of the fuel gas and the air. The flame of a burning surface of the main frame can be divided into independent flames by the stable burning isolation strip so that the burning is more stable and fewer pollutants are emitted.

Inventors

Weizhen Li
Jingcai ZHANG
Tao Zhang

Assignees

DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES

Dates

Publication Date: 20260505
Application Date: 20211129
Priority Date: 20201103

Claims (10)

1 . A burner component comprising: a main frame comprising a plurality of through holes enclosed by a main frame wall, wherein the plurality of through holes are evenly distributed across the main frame, each of the plurality of through holes is perpendicular to and has an opening at a planar surface of the main frame; and at least one stable burning isolation strip that is attached to the planar surface of the main frame, wherein the at least one stable burning isolation strip covers openings of through holes at the planar surface that are disposed underneath the at least one stable burning isolation strip, thereby dividing the planar area into at least two ventilation areas, and a width D1 of the at least one stable burning isolation strip on the planar surface of the main frame is equal to a total length of a distance across 3 to 10 through holes on the planar surface so that, during operation, each ventilation area has a flame that is separated and independent from a flame in an adjacent ventilation area.
2 . The burner component according to claim 1 , wherein the at least one stable burning isolation strip is attached to the planar surface of the main frame.
3 . The burner component according to claim 1 , wherein the at least one stable burning isolation strip extends into the main frame perpendicular to the planar direction of the main frame so as to form a wall to a portion of the plurality of through holes adjacent to the at least one stable burning isolation strip.
4 . The burner component according to claim 1 , wherein each of the plurality of through holes has a cross-sectional area S hole satisfying 0.1 mm 2 ≤S hole ≤9 mm 2 .
5 . The burner component according to claim 1 , wherein the stable burning isolation strip is continuous or discontinuous on the planar surface of the burner component, and a discontinuous section has a width D 2 equal to a total length a distance across one or two through holes.
6 . The burner component according to claim 1 , wherein the stable burning isolation strip has a width D 1 satisfying 2 mm≤D 1 ≤50 mm.
7 . The burner component according to claim 1 , wherein each ventilation area has a cross-sectional area S n satisfying 30 mm 2 ≤S n ≤22500 mm 2 .
8 . The burner component according to claim 1 , wherein one of the plurality of through holes has a wall thickness, d hole that satisfies 0.03 mm≤d hole ≤3 mm, and the main frame has a wall thickness d outer satisfying 0.03 mm≤d outer ≤50 mm.
9 . The burner component according to claim 1 , wherein the ventilation area has a thickness h in the direction perpendicular to the planar surface of the main frame of 4 mm≤h≤1000 mm.
10 . A burner comprising the burner component according to claim 1 .

Description

TECHNICAL FIELD The present disclosure relates to the technical field of combustion apparatuses, in particular to a burner component and a burner. BACKGROUND Burner is a general name for devices injecting fuel and air in a certain manner for mixed burning. Burners are divided into industrial burners, burning machines, civil burners and special burners according to types and application fields. The burners commonly used at home include gas boilers, gas stoves, high-fire gas stoves, infrared gas stoves, and burning heads of gas water heaters. The gas boiler has the power of 200 kW or more, fuel gas is sprayed out of a small hole and mixed with air blown into a large barrel by a fan, and then is ignited to form an integral cylindrical conical flame. As for a traditional burning head, fuel gas is mixed with air in a burning disc and ignited, which belongs to diffusion flame burning. The traditional burning head has simple structure, mature technology, low cost, but the high CO and NOx emission concentration. A main body of a full-premixed metal fiber surface burning head is a temperature-resistant metal fiber net and needs to cooperate with a full-premixed fan and a valve group for use, which shortens a flame length to avoid a local high temperature and shorten burning time, so as to reduce nitrogen. As for this surface burning head, although the CO and NOx emission concentration is low, but the cost is high and has defects such as burner blocking and tempering risks. A staged burning head (bias burning head) introduces air or fuel into a furnace in multiple stages to burn, which generates a reducing atmosphere to reduce generated NOx into N2, so as to reduce nitrogen. The staged burning head has relatively complex structure, mature technology, high cost, limited nitrogen reduction effect (ultralow emission is difficult to achieve), and high CO emission concentration. The gas stove has the power of 3-5 kW. After pipeline fuel gas ejects air, the air is ejected from small holes arranged at an inner disc and an outer ring, and flame is divided into two layers after ignition: a rich-burning premixed burning flame is formed inside by the fuel gas and the ejected air, and a diffusion burning flame is formed outside by residual fuel and ambient air. As for a traditional cooking range, fuel gas ejects primary air into a cooking range structure for mixing, premixed gas is ignited followed by contacting with secondary air through diffusion to complete a burning process. The traditional cooking range has simple structure, mature technology, low cost, but low heat efficiency and high CO and NOx emission concentration. A burning disc of the infrared gas stove is a porous ceramic plate, fuel gas ejects air into a cooking range for mixing, the ceramic disc is heated through flame burning to be converted into infrared burning. However, ceramic is prone to damage, insufficient combustion gas easily causes insufficient burning, the cost is high, the heat efficiency is high, and the NOx and CO emission concentration is high. The cooking range structure of the high-fire gas stove is not special and requires high fuel gas pressure, combustion air is generally supplied by ejection or a fan. The high-fire gas stove has simple structure, the mature technology, low cost, but low heat efficiency and high CO and NOx emission concentration. The high-fire gas stove has the power of 5-30 kW. After being mixed in a pipeline, pipeline fuel gas and air blown out by a fan are sprayed out from holes arranged in an inner disc and an outer ring and are ignited to form an oxygen-enriched flame with high fire power and temperature, but the mixed gas burn insufficiently and CO and NOx emission concentration is high. The infrared gas stove has the power of 3-5 kW. After pipeline fuel gas ejects air and is ignited from an upper surface of a honeycomb disc, the flame retracts into the honeycomb channels for short-flame burning, and the honeycomb body is heated to form a high-temperature heat accumulator to emit infrared rays for heating. Infrared burner is basically the same as the infrared gas stove in structure and features and mainly carries out burning in a channel, its power is limited and the structure is prone to damage. The water heater and the wall-hanging stove have the power of 20-70 kW. Fuel gas and part of air blown by a fan enter a fire grate and then are sprayed out from small holes, a rich-burning premixed cluster flame is formed after ignition, and fuel which is not completely burned and the remaining part of air sprayed out through gaps of the fire grate continue to be diffused and burned. As for a traditional tobacco pipe type fire grate, fuel gas ejects primary air into a tobacco pipe structure for mixing, premixed gas is ignited followed by contacting with secondary air by means of diffusion so as to complete a burning process. It has simple structure, mature technology, low cost, but high CO and NOx emission concentration. The str