CN101059256A

CN101059256A - Honeycomb heating body for gas combustor

Info

Publication number: CN101059256A
Application number: CN 200710028268
Authority: CN
Inventors: 罗添翼
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-05-23
Filing date: 2007-05-23
Publication date: 2007-10-24

Abstract

The present invention provides a honeycomb heater which can improve the combustion stability in burner effectively and can prevent flame-separating and is used in gas burning device and burner. The heater is superimposed or superimpose-weld by at least two separated metal honeycomb bodies up-and-down, and the superimposed site or the superimpose-weld site is formed resistance layer. It uses the combined resistance layer between two honeycomb bodies point contact, reduces the shortcomings of high heat conductance of single honeycomb body and reduces the heat conductance; at the same time, the hole site of honeycomb bodies is cross after independent honeycomb body is superimposed, so the gas flow is more even; in addition, due to the mutual supporting force of superimposed and weld honeycomb bodies, the coefficient of thermal expansion and the distortion of honeycomb bodies are minimum.

Description

Be used in the honeycomb heating body on the combustion gas tool burner

Technical field:

The present invention relates to the gas appliance technical field, be meant a kind of honeycomb heating body that infra red radiation function is arranged on the combustion gas tool burner that is used in especially.

Background technology:

As everyone knows, existing by the auxiliary air aftercombustion, the atmospheric gas kitchen range of Convective Heating exist that the thermal efficiency is low, incomplete combustion, NXO compound and the higher many defectives of CO content discharging, people are in order to improve the thermal efficiency of kitchen range in recent years, reduce discharge of harmful gases and to the pollution of environment, and innovation and creation the gas kitchen ranges of fully premixed infrared radiation heating.The gas kitchen ranges that facts have proved fully premixed flameless combustion infrared radiation heating can overcome the above problems fully; it is the complex manufacturing technology of infrared ceramic sheet that but there is common problem for a long time in the infrared ceramic radiation heating board on the infrared gas stove tool burner; ignition temperature is difficult to control; the host material poor stability of potsherd; the process standardization difficulty is very big; potsherd in manufacturing process once the faint deviation of technology occurs; carbon monoxide content will severe overweight and is influenced normal combustion; poor sealing performance when potsherd combines with metal shell; the infrared ceramic sheet is after making kitchen range simultaneously; kitchen range bursting and weathering of infrared ceramic sheet usually can occur in the process of using; and in a single day the infrared ceramic sheet occurs bursting with this table cooker tool of weathering and tempering phenomenon will occur; and in a single day a table cooker tool occurs that tempering will cause will whole table cooker tool burning out may, in a single day kitchen range burn out and will cause bigger danger.Therefore, though every technical indicators such as the infrared gas stove tool is energy-conservation, efficient, environmental protection, smoked pot all are eager to excel than air suspended type kitchen range, it is all good that authoritative department detect to be generally acknowledged, but above problem can not be solved for a long time at all, restricting the development of infrared gas stove tool product and apply.Though existing metallic honeycomb bodies can solve potsherd and burst problem, single-layer metal honeycomb ceramics coefficient of heat conduction height makes combustion instability, is easy to generate from phenomenons such as flames.

Summary of the invention:

The objective of the invention is to overcome the deficiencies in the prior art part, a kind of stability that can effectively improve burner combustion is provided and prevents to be used in honeycomb heating body on the combustion gas tool burner from what flame took place.The stability of burning and the generation of anti-non-return have effectively been improved, make the discharging of nitrogen oxide (NXO) and carbon monoxide (CO) be lower than state-set standard, the thermal efficiency is brought up to about 70%, and heater synthesis energy saving rate reaches about 30%, and the life-span of combustion heating body is improved prolongation greatly.

For solving the problems of the technologies described above, the present invention adopts technical scheme to be: this heater by at least two independently metallic honeycomb bodies be superimposed with each other up and down or superimposed being welded, wherein superimposed place or superimposed weld form resistive layer.It utilizes having reduced single honeycomb body heat in conjunction with resistive layer and conduct high shortcoming between two honeycomb ceramics points contacts up and down, has reduced heat conductivity; Simultaneously independently honeycomb ceramics that the position, hole of honeycomb ceramics is formed is staggered, allow fuel gas flow more evenly flow; In addition, the mutual support force of, welding superimposed by honeycomb ceramics makes the thermal coefficient of expansion and the minimizing deformation of honeycomb ceramics.

The heat endurance and the generation that prevents from the flame phenomenon of burning have effectively been improved by above technical scheme, make the discharging of nitrogen oxide (NXO) and carbon monoxide (CO) be lower than state-set standard, the thermal efficiency is brought up to about 70%, heater synthesis energy saving rate reaches about 30%, and the life-span of combustion heating body is improved prolongation greatly.

Description of drawings:

Fig. 1 is a structural representation of the present invention.

The specific embodiment:

See shown in Figure 1ly, this enforcement is carried out the two-layer composite metal honeycomb heater that is used on the gas appliance that layering mode superimposed or superimposed welding is made infra red radiation function by two-layer high temperature resistant, erosion-resisting metallic honeycomb bodies.The honeycomb ceramics of this composite metal honeycomb heater upper strata 1 for making by high temperature resistant 1200 ℃～1800 ℃, anticorrosive, oxidation resistant alloy material, the honeycomb heating body of lower floor 2 for making by high temperature resistant 1200 ℃～1450 ℃, anticorrosive, oxidation resistant alloy material.Wherein superimposed place or superimposed weld form resistive layer 3, utilize layer and point-contact junction between the layer to close resistive layer and reduce the heat conduction and make burning stablize and prolong the service life of its honeycomb heating body more.In addition, because honeycomb heating body flame combustion layer mainly at last honeycomb ceramics superficial layer, does not have influence to the burning overall performance, so the lower metal honeycomb ceramics can adopt the relatively low alloy metal material of cost to make.

Claims

1, be used in honeycomb heating body on the combustion gas tool burner, it is characterized in that: this heater is by at least two metallic honeycomb bodies superimposed or superimposed being welded up and down mutually independently, and wherein superimposed place or superimposed weld form resistive layer.

2, the honeycomb heating body that is used on the combustion gas tool burner according to claim 1 is characterized in that: position, the hole mutual dislocation of two adjacent metal honeycomb ceramics up and down.