CN101576257B - Burner, burning heating method and burning heating equipment - Google Patents
Burner, burning heating method and burning heating equipment Download PDFInfo
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- CN101576257B CN101576257B CN2008101059134A CN200810105913A CN101576257B CN 101576257 B CN101576257 B CN 101576257B CN 2008101059134 A CN2008101059134 A CN 2008101059134A CN 200810105913 A CN200810105913 A CN 200810105913A CN 101576257 B CN101576257 B CN 101576257B
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Abstract
The invention relates to a burner, a burning heating method and burning heating equipment. The burner comprises a distributor chamber and gas mixing pipes, wherein the distributor chamber is provided with a cavity, and a fuel gas inlet is arranged on the distributor chamber; the inlet ends of the gas mixing pipes are communicated with the cavity of the distributor chamber so as to obtain fuel gas;the side wall of each gas mixing pipe is provided with at least one gas inlet hole used for absorbing combustion improver to be mixed with the fuel gas; and the outlet ends of the gas mixing pipes ar e used for providing mixing gas of the fuel gas and the combustion improver for burning. The burning heating method comprises the steps of distributing and leading the fuel gas into more than one gas mixing pipe; leading the combustion improver into the gas mixing pipes and mixing the combustion improver and the fuel gas in the gas mixing pipes through a set process to form the mixing gas; and enabling the mixing gas to flow out of the gas mixing pipes for burning. The burning heating equipment adopts the burner of the invention. The technical scheme provided by the invention improves the mixing effect of the fuel gas and air in the mode of burning after mixing, thereby improving the thermal efficiency and reducing the energy consumption and the environmental pollution.
Description
Technical field
The present invention relates to a kind of burner, burning heating method and burning heating equipment; Relate in particular to a kind of burner that is applied to burning heating equipment as combustion head; And relate to the performed burning heating method of this burner, and the multiple burning heating equipment such as gas stove, boiler and water heater that adopt this burner.
Background technology
Existing various burning heating equipment, in the market Chinese meal cooking gas-cooker, stew gas-cooker, civil gas stove, middle-size and small-size gas fired-boiler and domestic gas water heater etc. for example, it all need use burner to be communicated with fuel gas source with the heating of burning.These burners be otherwise known as usually kitchen range or combustion head.Burners in prior mainly contains two types, and one type is the combustion-supporting burner of gravity-flow ventilation, and another kind of is the combustion-supporting burner of blower fan forced ventilation.
In the prior art, the structure of common gravity-flow ventilation booster burners is shown in Figure 1A and 1B, and wherein Figure 1A is the side sectional view of this burner, and Figure 1B is the vertical view of this burner.This burner mainly comprises burner cavity 101 and tray for combustion 102.Tray for combustion 102 is as the loam cake of burner cavity 101, is positioned at the burning through hole 103 at center or little burning through hole 103 that a plurality of dispersion is laid is communicated with burner cavity 101 through one.On burner cavity 101, also be communicated with the fuel gas pipeline 4 of supplying with combustion gas.When burning, the combustion gas that fuel gas source 5 provides is directly sent into burner cavity 101 through fuel gas pipeline 4, burning through hole 102 ejections on tray for combustion 102.At this moment, between burner cavity 101 with tray for combustion 102 gaps the outside air that feeds, and the outside air of circulation all can carry out nature with combustion gas and mixes above tray for combustion 102.Ignite combustion gas and Air mixing gas, then combustion gas with the Air mixing process in burn.Therefore, the mixed combustion system of the gas of such burner is called combustion system in the mixing again.Because such burner adopts open burning to replenish air; So its ubiquitous defective is:,, when mixing is inhomogeneous, take fire so the mixed effect of air and combustion gas is bad because of burning while mixing; Cause flame front place air-fuel ratio excessive; Combustion heat value is not high, and the air-fuel ratio after the flame front is too small, the incomplete combustion that makes combustion gas; Open burning and atmosphere form free convection heat transfer, burning liberated heat major part along with the cold air of circulation naturally to external diffusion, so wasted great amount of heat energy, the ineffective power consumption efficiency is many.
In the prior art, the structure of common blower fan forced ventilation booster burners is as shown in Figure 2, and its primary structure is made up of blower fan 201, burner combustion dish 202 and banking fire cap 204 etc.When burning, combustion gas is introduced banking fire cap 204 through fuel gas pipeline 4, then sprays into burner combustion dish 202.The forced ventilation mouth 205 that blower fan 201 forces the circulation of air of introducing to cross burner combustion dish 202 both sides is admitted to burner combustion dish 202.Combustion gas and air carry out mixing and burning in burner combustion dish 202.The gas of such burner mixes combustion system and also belongs to combustion system in the mixing.Because adopting the blower fan forced ventilation mixes; So such burner ubiquity disadvantage: 1) the force ventilated air-flow of blower fan is very fast, gas-flow is taken advantage of a situation mobile in the burner combustion dish with high-speed air flow, the burning while mixing; So undercompounding causes fuel gas buring insufficient; 2) blower fan can produce forced convection heat transfer, has accelerated thermal diffusion, has wasted a lot of heat energy, and the lost work power consumption is more; Little fire was prone to blown out by blower fan when 3) large and small fire was changed, and influenced operating efficiency; 4) running of blower fan has expended electric energy, and the noise pollution of blower fan work is very serious.
According to the data that gas-fired equipment inspection center in Beijing's provides, the conversion of the thermal efficiency of national standard Chinese meal cooking stove is merely 20%, and thermal waste is very serious, and this is a problem demanding prompt solution.Some energy-saving burners that occur have in the market all just been done some improvement in structure aspects, make ratio of combustion increase, but do not change the mode of mixed combustion, still adopt combustion system in the mixing.Therefore, do not solve the Burner Technology scheme of the low problem of the thermal efficiency in the prior art.
Summary of the invention
The purpose of this invention is to provide a kind of burner, burning heating method and burning heating equipment, improve the combustion thermal efficiency of burner and burning heating equipment with realization, and can energy savings.
For realizing above-mentioned purpose, the invention provides a kind of burner, comprising:
Distributor chamber is provided with a cavity in it, and is provided with the fuel gas inlet that is communicated with said cavity, and combustion gas gets into cavity through this fuel gas inlet; A plurality of gas mixing pipes, the arrival end of said gas mixing pipe is communicated with said cavity through gas nozzle; The position of the contiguous gas nozzle of said gas mixing pipe sidewall is provided with the air admission hole that at least one is used to suck combustion adjuvant gas; The port of export of gas mixing pipe is arranged at the top of burner; The aperture of said gas nozzle reduces to gas mixing pipe arrival end direction from cavity gradually, combustion gas from cavity in gas nozzle enters into gas mixing pipe; The port of export of said gas mixing pipe has a preseting length to the mixer between the gas nozzle, and the ratio in this preseting length and gas nozzle aperture is greater than 50.
For realizing above-mentioned purpose; The present invention provides a kind of burning heating equipment again; Comprise: burner of the present invention; And being used to the chamber that is heated supporting the bracing frame of material to be heated and/or be used for ccontaining fluid to be heated, this burner is fixed on the below that is positioned at material to be heated in the bracing frame and/or is fixed on the below in the chamber that is heated.
For realizing above-mentioned purpose, the present invention also provides a kind of burning heating method, comprises the steps:
Combustion gas is transported in the cavity of burner distributor chamber, makes combustion gas enter into the gas mixing pipe of a plurality of correspondences through a plurality of gas nozzles from cavity; Air is entered in the gas mixing pipe by the air admission hole that is provided with on the said gas mixing pipe sidewall, and form gaseous mixture at a preseting length and combustion gas mixing; Said air admission hole is arranged on the position of the contiguous gas nozzle of gas mixing pipe sidewall, and the ratio in said preseting length and gas nozzle aperture is greater than 50;
Can know by above technical scheme; The present invention adopts with combustion gas shunting, natural suction air, in the preseting length gas mixing pipe; Utilize the vortex phenomenon of near mouthful of section of gas nozzle; Combustion gas and air are mixed the mixing after-combustion mode that then sprays mixture combustion again, have avoided the problem that occurs in the combustion system in the existing mixing, have following advantage:
1, combustion gas shunting can improve flow velocity, forms eddy current and is beneficial to mix;
2, the negative pressure of high-speed fuel gas stream can form combustion gas and the mixing of air in the eddy current environment naturally automatically from the air admission hole suction air, mixes, and is respond well;
3, just spray after combustion gas and air fully mix and burn; The gaseous mixture that mixes on the one hand can burn fully; On the other hand, no longer mix during burning, avoided the diffusion of cross-ventilation motion heat energy; Therefore improve the thermal efficiency of burner, reduced energy resource consumption;
4, natural suction air needn't adopt blower fan to quicken air to flow, when realizing abundant air inlet, avoided the required electric energy that expends of blower fan running, the influence of also having avoided the fan noise environmental pollution to cause.
Below through specific embodiment and combine accompanying drawing that the present invention is done further detailed description.
Description of drawings
Figure 1A is the side sectional view of gravity-flow ventilation booster burners in the prior art;
Figure 1B is the vertical view of gravity-flow ventilation booster burners in the prior art;
Fig. 2 is the structural representation of blower fan forced ventilation booster burners in the prior art;
Fig. 3 is the structural representation of the concrete embodiment one of burner of the present invention;
Fig. 4 is gas mixing pipe port of export rounding state sketch map among the concrete embodiment of burner of the present invention;
Fig. 5 is the structural representation of the concrete embodiment two of burner of the present invention;
Fig. 6 is the structural representation of the concrete embodiment three of burner of the present invention;
Fig. 7 is for helping the structural representation one that mixes sheet among the concrete embodiment four of burner of the present invention;
Fig. 8 is for helping the structural representation two that mixes sheet among the concrete embodiment four of burner of the present invention;
Fig. 9 is the flow chart of burning heating method specific embodiment of the present invention;
Figure 10 is the structural representation of burning heating equipment specific embodiment one of the present invention;
Figure 11 is the structural representation of burning heating equipment specific embodiment two of the present invention.
Among the figure:
The 101-burner cavity 102-tray for combustion 103-through hole that burns
4-fuel gas pipeline 5-fuel gas source 201-blower fan
202-burner combustion dish 204-banking fire cap 205-forced ventilation mouth
301-distributor chamber 302-gas mixing pipe 303-Connection Block
304-kitchen range base 305-fuel gas inlet 306-gas outlet
307-gas nozzle 308-gaseous mixture nozzle 309-cavity
310-air admission hole 311-tray for combustion 312-helps mixed sheet
313-burning through hole 300-burner 401-bracing frame
The 402-exhaust 501-chamber 502-boiler jacket that is heated
503-exhaust 504-hot water goes out the 505-cooling water inlet
The specific embodiment
The basic structure of each embodiment of burner of the present invention comprises distributor chamber and a plurality of gas mixing pipe.Be provided with a cavity in this distributor chamber, the distributor chamber wall is provided with the fuel gas inlet that is communicated with cavity and fuel gas pipeline, and the combustion gas in the fuel gas pipeline gets into cavity through this fuel gas inlet; The arrival end of each gas mixing pipe is communicated with to obtain the combustion gas of shunting with the interior cavity of distributor chamber; And also be provided with at least one on the sidewall of each gas mixing pipe and be used to suck the air admission hole that combustion adjuvant mixes with combustion gas, the port of export of each gas mixing pipe is used to provide the gaseous mixture of combustion gas and combustion adjuvant to burn.
Among each embodiment of burner of the present invention; Through distributor chamber combustion gas is shunted; Then introduce in each gas mixing pipe, in gas mixing pipe, be pumped into air as combustion adjuvant, air and combustion gas mix through accomplishing behind certain stroke in gas mixing pipe; When gaseous mixture during, flammable gaseous mixture can be provided from the ejection of the port of export of gas mixing pipe.Can know that by above-mentioned basic structure each embodiment of burner of the present invention provides a kind of burner that mixes the after-combustion mode that adopts, and can improve combustion gas and Air mixing effect, thereby improve combustibility.Introduce in detail through specific embodiment below.
Burner embodiment one
Be illustrated in figure 3 as the structural representation of the concrete embodiment one of burner of the present invention.The burner of present embodiment comprises distributor chamber 301 and a plurality of gas mixing pipes 302.Wherein, this distributor chamber 301 can be formed by the Connection Block 303 of a plate-like and kitchen range base 304 relative fastenings of a plate-like, to form cavitys 309 in distributor chamber 301 inside.Offer fuel gas inlet 305 on the wall of distributor chamber 301; As shown in Figure 3; Fuel gas inlet 305 specifically can be opened on the kitchen range base 304 as distributor chamber 301 lower surfaces, and the cavity 309 in the distributor chamber 301 is communicated with the fuel gas pipeline 4 of fuel gas source 5 through fuel gas inlet 305.On Connection Block 303, be provided with a plurality of gas outlets 306 as distributor chamber 301 upper surfaces; And each gas outlet 306 place is provided with a gas nozzle 307 respectively, and the arrival end of each gas mixing pipe 302 is communicated with through gas outlet 306 with distributor chamber 301 interior cavitys 309.On the sidewall of each gas mixing pipe 302, be respectively equipped with a plurality of air admission holes 310 that air mixes with combustion gas that are used to suck, air admission hole 310 can come suction air with combustion adjuvant environmental communication such as ambient atmosphere or source of oxygen.Combustion gas and air mix in gas mixing pipe 302, and then each gas mixing pipe 302 is at its port of export ejection combustion gas and Air mixing gas, so that flammable gaseous mixture to be provided.For increasing the ejection flow velocity of gaseous mixture, gaseous mixture nozzle 308 can be set at the port of export of gas mixing pipe 302, so more help concentrating of flame heat.
The concrete course of work of present embodiment burner is: the combustion gas that at first certain pressure is provided by fuel gas source 5 is in the cavity 309 of distributor chamber 301; After in the cavity 309 of combustion gas entering distributor chamber 301, under the pressure effect of fuel gas source 5, introduced in a plurality of gas mixing pipes 302 by shunting; Combustion gas is flowed gas mixing pipe 302 high speeds, and the negative pressure that forms in the gas mixing pipe 302 makes it possible to be pumped in the gas mixing pipe 302 through the air of air admission hole 310 with the external world; In gas mixing pipe 302, combustion gas and air continue the stroke through preseting length, in this process, accomplish and mix; Combustion gas and Air mixing gas are from the port of export ejection of gas mixing pipe 302, so that burn.
For realization mixes the after-combustion mode, and for improving mixed effect, improve combustibility, the present embodiment burner reaches above-mentioned effect through a plurality of its specific structure designs:
The structure that distributor chamber 301 and a plurality of gas mixing pipes 302 match.This structural design significant feature is can be with the combustion gas shunting to improve flow velocity.Because the pressure of fuel gas source is certain, thus multiply be divided into when combustion gas, and the cross-sectional area of per share gas-flow through gas nozzle 307 is hour, the corresponding raising of fuel gas flow speed in each gas mixing pipe 302.The raising of fuel gas flow speed, and in gas mixing pipe 302, the circulate contact area of interface and air interface of per share combustion gas is corresponding bigger, all is key factors of improving follow-up combustion gas and air mixed effect.In addition; Shunt with gas mixing pipe 302; Can also come to adapt to neatly the different needs of burning heating equipment through the number of adjustment gas mixing pipe 302, gas mixing pipe 302 numbers of burner can be 3～500, and what general Chinese meal cooking stove adopted is that 30-60 is individual, home-use kitchen range is a 3-30 gas mixing pipe 302; Enough burning heating-up temperatures can be provided, can combustion gas appropriately be shunted again.Large-sized boiler can be confirmed the number of gas mixing pipe according to the thermic load of boiler, the settings of also available many group burner combination.
The structural design of air admission hole 310 on the gas mixing pipe 302.Air admission hole 310 is arranged on gas mixing pipe 302 sidewalls, particularly follows the position behind the gas nozzle 307 closely, for air provides inlet.Air admission hole 310 can be by the combustion gas negative pressure that flow at high speed produced in gas mixing pipe 302, and nature is pumped into air in the gas mixing pipe 302, need not forced ventilation.The setting of air admission hole 310 preferably along the circumferentially evenly laying of gas mixing pipe 302, for example is provided with four air admission holes 310, each interval 90 degree.Generally speaking, as long as the aperture area of air admission hole 310 satisfies the requirement of suction air amount on each gas mixing pipe 302.So-called suction air amount is the interior volume that sucks air from each gas mixing pipe 302 of unit interval.Because the pressure of fuel gas source is certain, when the quantity and cross-sectional area one timing of gas mixing pipe 302, the gas quantity that each gas mixing pipe flow through in 302 unit interval also can calculate definite; Again because be roughly 1: 5 as the oxygen of combustion adjuvant and the volume ratio of air in the air; And Main Ingredients and Appearance is the combustion gas of methane (CH4), and the burn volume ratio of required oxygen of itself and self is about 1: 2.So; Amid all these factors can calculate the area of confirming to offer on each gas mixing pipe 302 air admission hole 310; Therefore, the quantity of air admission hole 310 and area setting preferably make the suction air amount of each gas mixing pipe 302 require to suck enough air according to ideal air-fuel ratio.
Junction at distributor chamber 301 and gas mixing pipe 302 arrival ends is provided with gas nozzle 307.The gas nozzle 307 that combustion gas reduces through the aperture after shunting gradually can further play the effect that improves fuel gas flow speed, and according to principle of hydrodynamics, can make combustion gas forming the eddy current section through gas nozzle 307 backs, is beneficial to mixing.
302 mixed gas outlet end remains with the gas mixing pipe 302 of preseting length from gas nozzle 307 to gas mixing pipe; This is a key point of present embodiment burner; This section gas mixing pipe 302 can provide time enough and space for combustion gas and Air mixing, is beneficial to it and fully mixes.According to principle of hydrodynamics, when fluid after the ejection of the nozzle of smaller aperture due, in follow-up certain distance, promptly 1 of nozzle bore: the 50-100 place will form the eddy current section, and after this flow regime of a segment distance is a steady flow segment.The technical scheme of present embodiment has been utilized this principle, according to the aperture of gas nozzle 307, the length of mixed gas outlet end to the gas mixing pipe between the gas nozzle 307 is set, and this segment distance also can be described as mixer.Preferred implementation is: the aperture that gas nozzle 307 is set is 0.2～0.3 millimeter, and the ratio that length of mixing and gas nozzle aperture 307 length are set approximates 50: 1.In the practical application, the length of mixer preferably is set to 13 centimetres, and the many factors that had mixed effect, product cost and volume concurrently are considered.According to the experimental study result, the size of gas nozzle 307 and mixer can obtain combustion gas and the The Best Mixed effect of air under the eddy current state during according to above-mentioned design.Certainly, needs as the case may be, the aperture equidimension of gas nozzle 307 and the design of number all can be adjusted.For example, the aperture of gas nozzle 307 can change in 0.1～1 millimeter scope, the ratio of length of mixing and gas nozzle 307 aperture lengths can less than or greater than 50.In general, when this ratio surpasses 100,,, then little to the improvement contribution of mixed effect so the growth of gas mixing pipe 302 length only can cause the increase of cost and small product size because the eddy current admixture that gas nozzle 307 backs are produced disappears basically.
Can know to the structural analysis of present embodiment burner that comprehensively in this burner, combustion gas just sprays after fully mixing with air and burns; Belong to the after-combustion mode of mixing; It efficiently solves in the existing burner, the existing undercompounding of combustion system in the mixing, the problem that efficiency of combustion is low.Therefore; The advantage of present embodiment technical scheme is: 1) when burning, do not have the convection current of outside air; Avoided the thermal diffusion phenomenon that burning causes while mixing, the phenomenon of thermal waste has also obtained avoiding, so reduced specific energy loss; Can energy savings, more can improve the thermal efficiency and reach more than 50%; 2) adopt a plurality of gas mixing pipes that combustion gas is split into many parts, because combustion gas shunted, and the cross section of each gas mixing pipe is less; So gas flow rate improves relatively, can quicken combustion gas and Air mixing, in the less space of circulation area, also be more conducive to combustion gas and air mixes; Simultaneously, combustion gas and Air mixing will be passed through the certain stroke in the gas mixing pipe, have enough room and times to mix; The gaseous mixture that mixes is burnt, and its air-fuel ratio is even, can not have the too much or very few combustion case of oxygen; Can significantly improve combustion efficiency, make burning more abundant, the thermal efficiency is higher; 3) the flow velocity raising also makes the gas mixing pipe internal pressure lower, can need not to adopt blower fan through air admission hole nature suction air, then can economize on electricity, and reduce noise pollution; 4) gas mixing pipe is exposed among the air; Outside air can be implemented air-cooled cooling to gas mixing pipe, then can reduce the resistant to elevated temperatures requirement of gas mixing pipe material on the one hand, thereby reduce cost; Can increase the temperature difference of the gas mixing pipe arrival end and the port of export on the other hand, further quicken to flow.In sum, the burner of present embodiment had that the thermal efficiency is high, cost is low concurrently, the advantage of many aspects such as energy-saving and cost-reducing and environmental protection.
The burner of present embodiment can have various ways in concrete the application; For example: when the number of gas mixing pipe is one, because its enough room and time that provide combustion gas and air to mix, so also have the after-combustion of mixing mode institute inherent advantages; Like good mixing effect, burning fully; Avoid thermal diffusion, reduce invalid energy consumption.
And on the basis of present embodiment, the axis shape of gas mixing pipe 302 and the distribution mode of gas mixing pipe 302 can have multiple design form.For example can design its axis is linear, and each gas mixing pipe 302 is spaced apart at a certain distance, parallel laying; Can be broken line shape perhaps, the port of export of each gas mixing pipe 302 is provided with towards the center at its axis of the port of export place of parallel gas mixing pipe 302 design, as shown in Figure 4; Perhaps can also guide gas mixing pipe into a plurality of directions as required, form many bunches of flames.The design of a plurality of gas mixing pipes not only can improve combustion efficiency, can also make the design of burner more flexible, increases the quantity of hot spot, adjusts the position of hot spot flexibly.
Burner embodiment two
Be illustrated in figure 5 as the structural representation of the concrete embodiment two of burner of the present invention.Present embodiment is on the basis of embodiment one; One tray for combustion 311 is set in burner; On tray for combustion 311, offer a plurality of burning through holes 313; The port of export of each gas mixing pipe 302 is embedded in the through hole 313 that respectively burns on the tray for combustion 311, passes burning through hole 313 and exposes tray for combustion 311, is used to provide gaseous mixture on tray for combustion 311, to burn.
Tray for combustion 311 the port of export that can fix each gas mixing pipe 302 is set, concentrated combustion flame is applicable to the requirement of common burning heating equipment.And the setting of tray for combustion 311 can be isolated flame and gas mixing pipe 302 relatively, and gas mixing pipe 302 is had protective effect, has reduced gas mixing pipe 302 materials to stable on heating requirement, thereby can reduce product cost.
In concrete the application, also so that a ccontaining shell further to be set between tray for combustion and distributor chamber, an end of ccontaining shell is fixed on the tray for combustion, and the other end is unsettled and be higher than the gas mixing pipe passage, plays the protective effect to gas mixing pipe.Usually, burner is embedded among the burning heating equipment such as cooking stove, water heater, also can need not the protection of ccontaining shell.
Burner embodiment three
Be illustrated in figure 6 as the structural representation of the concrete embodiment three of burner of the present invention.This burner has increased to help on the basis of embodiment one and has loaded in mixture the structure of putting.The burner of present embodiment also is provided with one and helps mixed sheet 312 to put as helping to load in mixture in gas mixing pipe 302, be used to guide gaseous mixture to form turbulent flow.Help the shape of mixing sheet 312 and the position being set multiple mode can be arranged in gas mixing pipe 302; The transverse cross-section parallel of mixing sheet 312 and gas mixing pipe 302 that helps of sheet preferably is set; Helping of adapting to of profile phase in outer margin contour and gas mixing pipe 302 cross sections mixed sheet 312 blocks and is located in the gas mixing pipe 302; And help on the edge that mixes sheet 312 and offer recess, as shown in Figure 7.A kind of preferable set-up mode is: one section major part for the completion mixing that gas mixing pipe 302 middle parts are long; Help and mix sheet 312 and can be arranged on respect in the cumulative port of export of gas mixing pipe 302 middle part calibers; So; Help the aperture area that mixes on the sheet 312 and the ratio range of gas mixing pipe 302 middle part cross-sectional areas to be 1: 0.5～2, preferably 1: 1.2.When combustion gas and air are flowed through shown in Figure 7 helping when mixing sheet 312, the gaseous mixture fluid is received aid and is mixed stopping of sheet 312 and be drawn towards the indent ejection.Therefore, the gaseous mixture fluid can reach bigger Reynolds (Reynold's) criterion through helping the flow regime of mixing sheet 312, thereby makes combustion gas and air form turbulent flow when helping mixed sheet 312 flowing through, and further helps the abundant mixing of combustion gas and air.
In the present embodiment, will help mixed sheet closing on the setting of gas mixing pipe port of export place.Help combustion gas and air to mix on the one hand, play to help and mix up usefulness, can also isolate combustion flame on the other hand, promptly avoid in gas mixing pipe, occurring tempering phenomenon.
Certainly; Help to load in mixture the shape of putting and be not limited to sheet, help the shape of mixing sheet also to be not limited to a kind of form as shown in Figure 7, can also be other forms; For example offer several through holes helping to mix circumferentially to be uniformly distributed with on the sheet 312; As shown in Figure 8, can be three～seven, the ratio of its aperture area and gas mixing pipe middle part cross-sectional area can change in 1: 0.5～2 scope.Perhaps can make up and offer recess or through hole.Helping other set-up modes that mix sheet, also can be that the form setting with the helical form fin helps mixed sheet on the sidewall of gas mixing pipe, as long as can help gaseous mixture to form turbulent flow, mixing is more fully got final product.In concrete the application, help the number of mixing sheet to be not limited to only be provided with one in each gas mixing pipe, also can be provided with a plurality of.And be not limited to be arranged on the port of export of gas mixing pipe, can also be arranged on positions such as arrival end or middle part.
The technical scheme of present embodiment can further be improved combustion gas and Air mixing effect, makes burning more abundant, thereby improves the thermal efficiency.Can also avoid tempering, be the protection to non-combustion zone parts such as gas mixing pipes, reduced the high temperature resistant requirement to this place's material, can reduce product cost.
Burning heating method embodiment
Be illustrated in figure 9 as the flow chart of burning heating method specific embodiment of the present invention.This method can adopt the device of burner embodiment one of the present invention to carry out, and it specifically comprises the steps:
Step 1, fuel gas source charge into combustion gas in the cavity of burner distributor chamber, and cavity is introduced the combustion gas shunting in a plurality of gas mixing pipes;
Step 2, in gas mixing pipe under the suction function of high-velocity fluid; Through the suction air from ambient atmosphere of the air admission hole on the gas mixing pipe; Thereby bubbling air is as combustion adjuvant in gas mixing pipe, and air and combustion gas through setting stroke, mix and form gaseous mixture in gas mixing pipe;
Step 3, gaseous mixture is flowed out, from gas mixing pipe to burn.
The burning heating method of present embodiment has realized that after combustion gas and air fully mix, just spraying gaseous mixture burns, and belongs to the after-combustion mode of mixing.It efficiently solves in the burning heating method of existing burner, the existing undercompounding of combustion system in the mixing, the problem that efficiency of combustion is low.This burning heating method has many-sided advantage: combustion gas and air be burning again after mixing, and has avoided the thermal diffusion phenomenon of burning and causing while mixing, has reduced specific energy loss, can energy savings, and more can improve the thermal efficiency and reach more than 50%; Combustion gas is split into many parts, and mixes through enough eddy current section strokes, good mixing effect, combustion efficiency improves, and makes burning more abundant, and the thermal efficiency is higher; Gas flow rate improves also makes the gas mixing pipe internal pressure lower, can need not to adopt blower fan through air admission hole nature suction air, then can economize on electricity, and reduce noise pollution.In sum, the burning heating method of present embodiment had that the thermal efficiency is high, cost is low concurrently, the advantage of many aspects such as energy-saving and cost-reducing and environmental protection.
On the basis of present embodiment, can will ignite with before burning from the gaseous mixture of gas mixing pipe ejection in step 3, mixed airflow is crossed blocked helping when mixing sheet of establishing in the gas mixing pipe, form turbulent flow through helping the recess guiding that mixes on the sheet.This burning heating method can adopt the technical scheme of burner embodiment three of the present invention, can further improve mixed effect, promotes burning.
In concrete the application, burning heating method of the present invention can be the performed method of burner any embodiment of the present invention, all can realize mixing the combustion method of after-combustion, improves combustion efficiency, improves the thermal efficiency.
Burning heating equipment embodiment one
Shown in figure 10 for the structural representation of burning heating equipment specific embodiment one of the present invention.The burning heating equipment of present embodiment specifically can be a kind of cooking stove, for example Chinese meal cooking stove, Chinese meal stew kitchen range etc.This burning heating equipment adopts any embodiment of burner of the present invention as kitchen range, and its structure mainly comprises: burner 300, be used to support the bracing frame 401 of material to be heated, and this burner 300 is fixed in the bracing frame 401 to be positioned at the below of material to be heated.
As a kind of cooking stove, material to be heated generally is exactly the pot that cooking is used, and pot is placed on the bracing frame 401 that is a recess shape, between the bottom of a pan and bracing frame 401, forms the combustion chamber.Burner 300 is fixed on the bottom of bracing frame 401, and makes air admission hole 310 on burner 300 gas mixing pipes 302 be positioned at the bottom of bracing frame 401, avoids getting in the scope of combustion chamber.Like this, when burning, burner 300 provides flammable gaseous mixture with under the state that outside air mixes not burning fully.
During specific to Chinese meal cooking stove and stew kitchen range, the upper surface of burner is preferable distance when being 10-15 centimetre apart from the distance of pot bottom, and promptly the bottom of a pan should place the centre position of burning polot flame length to be advisable.And the mixed gas outlet end that gas mixing pipe can be set in cooking stove neatly draws in to the center, and the flame of more assembling is provided.In the stew kitchen range, the mixed gas outlet end that gas mixing pipe can be set is parallel to each other, and comparatively average heating surface (area) (HS is provided.Further; The parameters such as length of the size of diameter that can be through control centre and edge's gas mixing pipe, the area of air admission hole and quantity, gas nozzle and position, mixer; Thereby control combustion gas and Air mixing ratio, the control mixed gas flow is to obtain required flame distribution.
The cooking stove that adopts burner of the present invention not only is the advantage of aforesaid burner itself also to have other advantages than the difference of existing cooking stove.The existing open cooking stove that mixes naturally need be provided with burnt gas exhaust outlet and airport usually in the edge and the bottom of bracing frame, in exhaust, also constantly introduces fresh air, could accomplish the ventilation of combustion chamber like this, guarantees to provide enough oxygen.But, the burning heating equipment of present embodiment, shown in figure 10; Because need not in the combustion chamber, to introduce air in the combustion process; So less burnt gas exhaust outlet 402 can be set, this structural design has basically formed a non-environment of exchange naturally of air in the combustion chamber, it is advantageous that further to reduce cross-ventilation; Avoid the cooling effect to the combustion chamber of thermal diffusion and cold air, the burning liberated heat almost completely is retained in and is used for heating in the combustion chamber.
Adopt the burning heating equipment of burner of the present invention, the thermal efficiency is high, and can energy savings, also can exempt the force ventilated dependence of blower fan, has avoided the noise pollution to environment.
Burning heating equipment embodiment
Shown in figure 11 for the structural representation of burning heating equipment specific embodiment two of the present invention.The burning heating equipment of present embodiment specifically can be a kind of boiler; Any embodiment that adopts burner of the present invention is as heater; The structure of this boiler mainly comprises: burner 300; Be used for the chamber 501 that is heated of ccontaining fluid to be heated, this burner 300 is fixed on the below in the chamber 501 that is heated, and is used for heating the chamber 501 that is heated.
Concrete; This boiler can be shown in figure 11, and the chamber 501 that is heated is placed within the boiler jacket 502, and the top in the chamber 501 that is heated is connected with hot water outlet 504; The be heated bottom in chamber 501 is connected with cold water inlet 505; Burner 300 of the present invention is fixed on the below in the chamber 501 that is heated, and forms the combustion chamber between the outer wall in the chamber 501 that is heated and the inwall of boiler jacket 502, and a burnt gas exhaust outlet 503 is set above boiler jacket 502.This burner 300 can be embedded in the boiler jacket 502; And make the scope of the air admission hole 310 disengaging combustion chambers on the gas mixing pipe 302; Be arranged on outside the boiler jacket 502; Can either provide one mix after-combustion fully condition, also help protecting gas mixing pipe 302 and air admission hole 310 parts such as grade not to receive the infringement of high temperature.
Adopt the burning heating equipment of burner of the present invention, possessed the advantage of this burner itself, thermal efficiency height can energy savings, also can exempt the force ventilated dependence of blower fan, has avoided the noise pollution to environment.
The boiler formula burning heating equipment of present embodiment can also replace with family expenses or industrial water heater.When as pot-type boiler, adopt burner of the present invention equally, the be heated volume and the position in chamber of appropriate change gets final product.In addition, burner of the present invention can also for example can combine the structure in the bracing frame and the chamber that is heated adaptable across various burning heating equipment in burning heating equipment, this burner is fixed on material to be heated and the below in the chamber that is heated, and heats simultaneously.The present invention reaches thermal efficiency raising, effect in energy saving and environmental protection with the combustion system that mixes after-combustion.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (10)
1. burner is characterized in that comprising:
Distributor chamber is provided with a cavity in it, and is provided with the fuel gas inlet that is communicated with said cavity, and combustion gas gets into cavity through this fuel gas inlet;
A plurality of gas mixing pipes, the arrival end of said gas mixing pipe is communicated with said cavity through gas nozzle; The position of the contiguous gas nozzle of said gas mixing pipe sidewall is provided with the air admission hole that at least one is used to suck combustion adjuvant gas; The port of export of gas mixing pipe is arranged at the top of burner;
The aperture of said gas nozzle reduces to gas mixing pipe arrival end direction from cavity gradually, combustion gas from cavity in gas nozzle enters into gas mixing pipe;
The port of export of said gas mixing pipe has a preseting length to the mixer between the gas nozzle, and the ratio in this preseting length and gas nozzle aperture is greater than 50.
2. burner according to claim 1 is characterized in that: the port of export of said gas mixing pipe is embedded in each through hole on the tray for combustion, is used to provide gaseous mixture on said tray for combustion, to burn.
3. burner according to claim 1 is characterized in that: in said gas mixing pipe, also be provided with to help to load in mixture more than one and put, be used to guide gaseous mixture to form turbulent flow.
4. burner according to claim 3 is characterized in that: said helping loads in mixture the sheet that is shaped as of putting, and offers recess and/or through hole on the edge, said help to load in mixture to put to block be located in the said gas mixing pipe.
5. according to claim 3 or 4 described burners, it is characterized in that: said help to load in mixture put the port of export setting that closes on said gas mixing pipe.
6. burner according to claim 2 is characterized in that: the outside of said gas mixing pipe is arranged with ccontaining shell, and an end of said ccontaining shell is fixed on the said tray for combustion, and the other end is unsettled and be not less than the gas mixing pipe air admission hole.
7. burner according to claim 1 is characterized in that: said air admission hole is circumferentially evenly laid along the sidewall of said gas mixing pipe.
8. burning heating method is characterized in that comprising:
Combustion gas is transported in the cavity of burner distributor chamber, makes combustion gas enter into the gas mixing pipe of a plurality of correspondences through a plurality of gas nozzles from cavity;
Air is entered in the gas mixing pipe by the air admission hole that is provided with on the said gas mixing pipe sidewall, and form gaseous mixture at a preseting length and combustion gas mixing;
Said air admission hole is arranged on the position of the contiguous gas nozzle of gas mixing pipe sidewall, and the port of export of said gas mixing pipe has a preseting length to the mixer between the gas nozzle, and the ratio in said preseting length and gas nozzle aperture is greater than 50;
Gaseous mixture is flowed out and burning from the port of export of gas mixing pipe.
9. burning heating method according to claim 8 is characterized in that, making before said gaseous mixture flows out burning from gas mixing pipe, also comprises: use to help to load in mixture and puts the said gaseous mixture of interception and in gas mixing pipe, form turbulent flow.
10. burning heating equipment that adopts the described arbitrary burner of claim 1～7; It is characterized in that comprising: described burner and be used to the chamber that is heated supporting the bracing frame of material to be heated and/or be used for ccontaining fluid to be heated, said burner is fixed on the below that is positioned at said material to be heated in the bracing frame and/or is fixed on the below in the said chamber that is heated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101059134A CN101576257B (en) | 2008-05-05 | 2008-05-05 | Burner, burning heating method and burning heating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101059134A CN101576257B (en) | 2008-05-05 | 2008-05-05 | Burner, burning heating method and burning heating equipment |
Publications (2)
| Publication Number | Publication Date |
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| CN101576257A CN101576257A (en) | 2009-11-11 |
| CN101576257B true CN101576257B (en) | 2012-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008101059134A Expired - Fee Related CN101576257B (en) | 2008-05-05 | 2008-05-05 | Burner, burning heating method and burning heating equipment |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749707B (en) * | 2009-12-29 | 2013-03-27 | 北京时代桃源环境科技有限公司 | Biogas burner |
| CN103017170A (en) * | 2012-12-19 | 2013-04-03 | 普鲁卡姆电器（上海）有限公司 | Multi-gas source gas control system with gas-air mixing device |
| CN103277800B (en) * | 2013-05-21 | 2015-03-11 | 四川大学 | Gas thermal power device suitable for two-taste hotpot |
| CN103614529B (en) * | 2013-10-23 | 2017-07-07 | 广东工业大学 | The premixed many spray gun aluminium homogeneous furnaces of fuel |
| CN105890157A (en) * | 2014-09-15 | 2016-08-24 | 朱永彪 | Gas boiler |
| CN105890158A (en) * | 2014-09-15 | 2016-08-24 | 朱永彪 | A gas boiler |
| WO2018058928A1 (en) * | 2016-09-30 | 2018-04-05 | 芜湖美的厨卫电器制造有限公司 | Gas water heater |
| CN107940556B (en) * | 2017-11-10 | 2023-07-14 | 珠海格力电器股份有限公司 | Indoor ventilator and air conditioner |
| CN109928611B (en) * | 2017-12-18 | 2024-01-30 | 中天科技精密材料有限公司 | Burner and optical fiber preform processing device with same |
| CN110173691A (en) * | 2019-05-24 | 2019-08-27 | 华帝股份有限公司 | Tubular honeycomb body |
| CN110160047A (en) * | 2019-05-24 | 2019-08-23 | 华帝股份有限公司 | Tubular honeycomb body and combustor |
| CN110173887B (en) * | 2019-06-17 | 2024-03-12 | 景洪 | Premixed low-nitrogen gas positive displacement water heater and control method thereof |
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| CN2325649Y (en) * | 1998-05-08 | 1999-06-23 | 胡喜令 | Low pressure double ducts mixed fuel gas burner |
| CN2612875Y (en) * | 2003-03-15 | 2004-04-21 | 李子球 | Novel gas mixing chamber appatatus |
| CN2672472Y (en) * | 2003-10-24 | 2005-01-19 | 杨泽超 | Energy saving gas burning range core |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2325649Y (en) * | 1998-05-08 | 1999-06-23 | 胡喜令 | Low pressure double ducts mixed fuel gas burner |
| CN2612875Y (en) * | 2003-03-15 | 2004-04-21 | 李子球 | Novel gas mixing chamber appatatus |
| CN2672472Y (en) * | 2003-10-24 | 2005-01-19 | 杨泽超 | Energy saving gas burning range core |
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| CN101576257A (en) | 2009-11-11 |
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