CN102635863B - Burner and fuel gas hot water equipment adopting same - Google Patents
Burner and fuel gas hot water equipment adopting same Download PDFInfo
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- CN102635863B CN102635863B CN201210121833.4A CN201210121833A CN102635863B CN 102635863 B CN102635863 B CN 102635863B CN 201210121833 A CN201210121833 A CN 201210121833A CN 102635863 B CN102635863 B CN 102635863B
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Abstract
The invention provides a burner which comprises at least two burner units, a second fuel-air mixing cavity as well as at least one fuel-air mixture distributing port, wherein each burner unit comprises a plurality of fire holes which are arranged in a lengthwise manner and a first fuel-air mixing cavity, and each first fuel-air mixing cavity is used for generating and transferring a first fuel-air mixture to the fire holes; at least two burner units are arranged side by side along a transverse direction and a gap is formed between the upper parts of the burner units, and the second fuel-air mixing cavity is used for generating a second fuel-air mixture; and at least one fuel-air mixture distributing port is arranged independently relative to at least two burner units and is communicated with gas in the second fuel-air mixing cavity so as to distribute the second fuel-air mixture to a gap between at least two burner units. Through the arrangement, the discharge of nitrogen oxide is effectively reduced and simultaneously the good burning effect is ensured, and the reconstruction of the fire discharge piece of the existing burner is reduced as much as possible.
Description
Technical field
The invention belongs to field of combustion equipment, be specifically related to a kind of burner and adopt the gas and hot water equipment of this burner.
Background technology
Gas and hot water equipment, as the burner, the heat exchanger that are usually provided with in gas heater or gas fired-boiler and hold the combustion chamber of burner and heat exchanger.Burner often includes the some fire row sheets be arranged side by side, each fire row sheet has the hybrid channel of air-gas, within it combustion gas and air can be mixed and pass to the fire hole that is positioned at fire row sheet top with in combustion chamber combustion and producing heat, heat after generation can water in reheat heat exchanger, thus be can be used for drinking by the water heated, bathing or heating etc.
Burner can produce waste gas in combustion, and can be discharged in air.Waste gas includes human body and the influential composition of air usually, as carbon monoxide (CO) or nitrogen oxide (NOx) etc.Along with living standard and the raising to environmental protection consciousness, people more and more pay attention to the discharge of pernicious gas in household gas apparatus.Wherein the discharge of carbon monoxide is already by people are paid close attention to, and the manufacturer of a large amount of gas utensil also takes appropriate measures the discharge reducing carbon monoxide, but, but enough attention are not yet caused for the discharge of nitrogen oxide.
Analyze after deliberation and show, the toxicity of nitrogen oxide is greater than carbon monoxide, and long-term discharge can cause the pollution of two aspects to air: acid rain and photochemical fog (Photochemical Smog).In the discharged nitrous oxides mark of the domestic gas tool formulated in China, superlative degree and the GB Pyatyi requirement nitrous oxides concentration upper limit are 70 milligrams/kilowatt-hour (mg/kWh).The mainly dense-dilute burner combustion technology of the discharged nitrous oxides being used for reducing domestic gas tool be widely adopted at present.
The general principle of bias combustion is that a part of combustion gas is burnt under the condition of lack of air, and namely " dense " burning crossed by fuel, and another part combustion gas is burnt under the too much condition of air, and namely " light " burning crossed by fuel.The theory measurement ratio of the stoichiometric proportion (Stoichiometric Ratio) of the combustion gas in two kinds of situations and air all bias combustion reaction, in dense flame, oxygen concentration is lower, primary combustion temperature is comparatively low when stoichiometric proportion, can reduce the generation of nitrogen oxide; And oxygen concentration is high in light flame, but combustion gas deficiency also can make primary combustion temperature reduce, thus reduces the discharge of nitrogen oxide, finally makes the total nitrogen oxide burnt reduce.Meanwhile, there is second-time burning in bias combustion process, the second-time burning of thick and thin flame is after primary combustion completes respectively, carries out between primary combustion product.Owing to containing the gas such as a large amount of carbon dioxide and water in primary combustion product, cause the concentration of the temperature in secondary response district and oxygen all lower, thus the generation of nitrogen oxide is suppressed.Therefore, the primary combustion of bias combustion and second-time burning effectively can suppress the generation of nitrogen oxide.
Adopt the burner structure of bias combustion as US Patent No. 5 in prior art, shown in 368,476 and the open CN 101592338A of Chinese patent.But, the burner of these new constructions all needs to carry out larger transformation to the fire row sheet in existing burner, and be guarantee good combustion efficiency, the structure of original fire row sheet, size or arrangement be all through accurately to calculate, a series of experiment and permanent manufacture use experience obtain, so, although the fire row sheet through transforming can reduce the discharge of nitrogen oxide to a certain extent, possibly original combustion efficiency cannot be guaranteed.
Summary of the invention
The object of the present invention is to provide a kind of burner, it can guarantee again good combustion efficiency in the discharge effectively reducing nitrogen oxide simultaneously, and reduces the transformation to existing burner fire screening as much as possible.
The object of the present invention is to provide a kind of gas and hot water equipment adopting said burner.
One of for achieving the above object, the invention provides a kind of burner, it comprises: at least two burner unit, each burner unit comprises some fire holes and the first Fuel-air hybrid chamber of aligned lengthwise, described first Fuel-air hybrid chamber be used for generate and transmit the first fuel-air mixture to described fire hole, described at least two burner unit be transversely arranged side by side and at an upper portion thereof between form gap; Second Fuel-air hybrid chamber, for generating the second fuel-air mixture; And at least one fuel-air mixture distribution openings, it is independently arranged relative to described at least two burner unit, and is communicated with described second Fuel-air hybrid chamber gas with in the described gap of at least two burner unit described in being dispensed to by the second fuel-air mixture.
As a further improvement on the present invention, this burner comprises individual tubes further, and it has the sidewall that lengthwise extends; At least one fuel-air mixture distribution openings described be arranged on described sidewall towards in the part in described gap.
As a further improvement on the present invention, described individual tubes comprises opening and the blind end at the longitudinal two ends laying respectively at its sidewall further; Described second Fuel-air hybrid chamber to be formed in region that described sidewall encloses and between described opening and blind end.
As a further improvement on the present invention, described first Fuel-air hybrid chamber has the first Venturi tube (venturi) part; Described individual tubes in the vertical direction is arranged lower than described first venturi portion.
As a further improvement on the present invention, described second Fuel-air hybrid chamber has the second venturi portion in the horizontal between described at least two burner unit.
As a further improvement on the present invention, described first Fuel-air hybrid chamber has air inlet; This burner comprises fuel supply device further, and it comprises towards the first jet of described air inlet and the second nozzle towards described opening; The outlet size of wherein said first jet is greater than the outlet size of described second nozzle, to provide the fuel of more.
As a further improvement on the present invention, described air inlet than the opening of described individual tubes size greatly be used for introduce more air capacities.
As a further improvement on the present invention, this burner comprises cover plate further, described cover plate covers on the top of described at least two burner unit and described some fire holes is come out, and the gap location of described cover plate between described at least two burner unit is provided with at least one fiery groove, the width of at least one fiery groove described is less than the width in described gap.
As a further improvement on the present invention, this burner also comprises the framework at least two burner unit described in accommodation and described individual tubes; Described at least two burner unit comprise latching device to be used for described at least two burner unit and described individual tubes to be all fixed on framework.
As a further improvement on the present invention, described framework comprises front panel; Described latching device comprises and extends through described front panel and coordinate with it with the first button hook described at least two burner unit be fixed on described framework, and extends through described front panel and coordinate with described individual tubes with the second button hook described individual tubes be fixed on described framework.
As a further improvement on the present invention, described first fuel-air mixture is dense fuel-air mixture, and described second fuel-air mixture is light fuel-air mixture; Described first and/or second fuel-air mixture comprises gas-air mixture body.
One of for achieving the above object, the present invention can also provide a kind of burner, and it comprises the first combustion parts, and it comprises the some tabular burner unit be transversely arranged side by side; Each burner unit is provided with row's fire hole at its top along longitudinally, for the one provided in dense combustion flame and light combustion flame; Second combustion parts, it comprises some individual tubes and some fiery grooves, between two that wherein each individual tubes is arranged on the arbitrary neighborhood of described some burner unit, described some fiery grooves to be arranged between fire hole row and to associate the another kind arranged for providing in dense combustion flame and light combustion flame with individual tubes.
As a further improvement on the present invention, this burner comprises further and covers in described some burner unit and expose the cover plate of described fire hole; Described some fiery grooves are arranged on the cover board, and in described individual tubes, perforate is to provide fuel-air mixture to corresponding fiery groove place burning.
For realizing another goal of the invention above-mentioned, the invention provides a kind of gas and hot water equipment, it comprises: said burner; Heat exchanger; And combustion chamber, accommodate described burner and heat exchanger, and allow that heat trnasfer that described burner combustion produces is to described heat exchanger.
As a further improvement on the present invention, this equipment also comprises air exhauster, and it is communicated with from combustion chamber, extract flue gas out and in combustion chamber, inputs fresh air simultaneously with described combustion chamber gases.
Compared with prior art, the invention has the beneficial effects as follows: because the distribution openings of the second fuel-air mixture is arranged independent of burner unit, make the size of the first Fuel-air hybrid chamber of existing burner unit and structure not need variation.In addition, individual tubes is in the horizontal between adjacent two burner unit, but the first venturi portion lower than burner unit on is vertically arranged, thus the interval between some burner unit does not need adjustment yet, that is, the major constituents of existing burner unit, size and arrangement all do not need adjustment, can realize guaranteeing good combustion efficiency while attenuating discharged nitrous oxides.
accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing for the present invention in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the floor map of gas and hot water equipment one detailed description of the invention of the present invention, and wherein front panel is removed to show its internal structure;
Fig. 2 is the schematic perspective view of burner in the gas fired-boiler shown in Fig. 1;
Fig. 3 is the burner top view shown in Fig. 2;
Fig. 4 is the burner three-dimensional exploded view shown in Fig. 2;
Fig. 5 is the burner front view shown in Fig. 2;
Fig. 6 is the cross-sectional schematic along A-A line direction in Fig. 3;
Fig. 7 is the cross-sectional schematic along B-B line direction in Fig. 3;
Fig. 8 is the graph of a relation of primary air ratio and the discharged nitrous oxides experimentally obtained.
Detailed description of the invention
Describe the present invention below with reference to each embodiment shown in the drawings.But these embodiments do not limit the present invention, the structure that those of ordinary skill in the art makes according to these embodiments, method or conversion functionally are all included in protection scope of the present invention.
Figure 1 shows that a detailed description of the invention of gas and hot water equipment of the present invention, this gas and hot water equipment is gas fired-boiler in the present embodiment.Gas and hot water equipment take fuel gas as fuel, as natural gas, town gas, liquefied gas, biogas etc., carrys out heat hot water to meet the demand of user's domestic water and/or heating by burning combustible gas.Certainly, the burner of the present invention below will introduced in detail is not limited in and is applied in gas fired-boiler, and it can be applied in equally and be only user and provide in the gas heater of domestic water; Even, it can also be applied to other forms of fuel, as in solid fuel, fluid combustion equipment.
As shown in Figure 1, this gas fired-boiler 100 comprises by the shell 4 of some panel sectional, the burner 1 be housed in shell 4, heat exchanger 2, combustion chamber 3, air exhauster 5 and gas circuit and water circuit system, and wherein burner 1 and heat exchanger 2 are arranged in combustion chamber 3.In present embodiment, heat exchanger 2 can adopt fin tube type heat exchanger, and namely fin is arranged on the water pipe of heat exchanger.Burner 1 is from air-channel system reception combustion gas and in combustion chamber 3 combustion, the heat that burning produces is absorbed by fin by convection type, then conducts feed pipe further with the water in heating pipe; Water after heating enters outside radiator circulation to provide heating installation by water circuit system, on the other hand, water after heating is also by another heat exchanger (not shown), as plate type heat exchanger transfers heat to the water pipe of domestic water, thus drink for user provides, the domestic water such as bathing.
Air exhauster 5 can adopt traditional centrifugal fan, is usually arranged on top, is positioned at the top of the components such as burner 1, heat exchanger 2, combustion chamber 3.Air exhauster 5 is communicated with by pipeline gas with combustion chamber 3, the flue gas produced can be evacuated to outside in combustion chamber 3, meanwhile, can form negative pressure and to be burnt required oxygen to provide burner 1 by the air intake in the external world in combustion chamber 3.Structure about burner will be described in detail hereinafter; In addition, because gas circuit and water circuit system are well known to the skilled person, so applicant is no longer repeated at this.
With reference to shown in Fig. 2 to Fig. 5, in present embodiment, burner 1 comprises box body, be housed in some burner unit 12 in box body and some individual tubes 13 and fuel supply device 15.Wherein box body comprises front panel 141, the rear board 142 relative with front panel 141, is positioned at the pair of side plates 143 of front and back panels both sides, the base plate 144 be connected with side plate bottom with front and back panels, and the cover plate 11 covering front and back panels and side plate top.Wherein, front and back panels 141,142 and side plate 143 and base plate 144 are formed, if the mode etc. of screw and nut screw connection by the assembling of traditional connected mode.
Coordinate with reference to shown in Fig. 6 and Fig. 7, burner unit 12 and individual tubes 13 can be used to provide the fuel-air mixture of different Fuel-air stoichiometric proportions respectively.Wherein, burner unit 12 roughly in tabular, can adopt existing fire row sheet.Burner unit 12 comprises the some fire holes 121 along lengthwise extension being located at its top and the mist pipeline 122 be formed on body.In this pipeline, be formed with the first Fuel-air hybrid chamber be communicated with fire hole 121 gas, pass to fire hole 121 for the combustion gas of being supplied by fuel supply device 15 and primary air in ratio mixing generation first fuel-air mixture of setting.
The first Venturi tube (venturi) part 123 (coordinating shown in Fig. 6) that next-door neighbour's air inlet that first Fuel-air hybrid chamber has air inlet 1231 (as shown in Figure 5) and is positioned at hybrid chamber upstream is arranged.Venturi tube is the gas by Venturi effect absorption air inlet 1231 place, and it can be made up of the entrance contraction section of axial cross section, cylindrical throat and conical diffuser usually.Because the principle of Venturi tube and formation are well known to those of ordinary skill in the art, so applicant is no longer repeated at this.
Individual tubes 13 has the barrel-shaped sidewall that lengthwise extends, and is respectively equipped with opening 1321 (as shown in Figure 5) and blind end (mark) at longitudinal two ends of sidewall.In present embodiment, between opening and blind end, one second Fuel-air hybrid chamber is formed with in the region that sidewall surrounds, for the combustion gas of being supplied by fuel supply device 15 and primary air ratio mixing generation second fuel-air mixture in setting, wherein the second fuel-air mixture has different Fuel-air stoichiometric proportions compared with the first above-mentioned fuel-air mixture.
On the sidewall of individual tubes 13, perforate is to arrange at least one fuel-air mixture distribution openings 131, and it is communicated with to be dispensed by the second fuel-air mixture with above-mentioned second Fuel-air hybrid chamber gas.In the present embodiment, distribution openings 131 has several, is arranged in a row on the sidewall being arranged on individual tubes 13 along longitudinally.Similar with the first Fuel-air hybrid chamber, second Fuel-air hybrid chamber is being provided with the second venturi portion 132 (coordinating shown in Fig. 7) near opening 1321 place, its operation principle is similar with structure and the first venturi portion 123, and applicant is no longer repeated at this.
In present embodiment, some burner unit 12 are transversely arranged side by side, and at an upper portion thereof between form gap; Some individual tubes 13 are transversely corresponding to be respectively arranged between two adjacent burner unit 12, thus the second fuel-air mixture can be dispensed in corresponding gap by the distribution openings 131 of individual tubes 13.As shown in Figure 6 and Figure 7, in the vertical direction, second venturi portion 132 of individual tubes 13 is all arranged lower than the first venturi portion 123 of burner unit, here " lower than " refer to the axis of the axis of the second venturi portion 132 lower than the first venturi portion 123.Preferably, individual tubes 13 entirety is all arranged lower than the first venturi portion 123.
Before address, first Fuel-air hybrid chamber of burner unit 12 and the second Fuel-air hybrid chamber of individual tubes 13 are used to provide the fuel-air mixture of different fuel-air stoichiometry ratio respectively, as dense fuel-air mixture and light air-gas mixture.Dense fuel-air mixture alleged here refers to, compares fuel and the theoretical stoichiometric ratio of the complete combustion reaction of air, crosses the fuel of " dense " and the mixture of primary air, in this case, primary air ratio is less, burns for dense burning, and the flame of generation is dense combustion flame; Otherwise light fuel-air mixture refers to, compare the theoretical stoichiometric ratio of fuel and the complete combustion reaction of air, cross the fuel of " light " and the mixture of primary air, in this case, primary air ratio is larger, burning is light burning, and the flame of generation is light combustion flame.
In present embodiment, fuel is combustion gas, and what formed in the first Fuel-air hybrid chamber is dense gas-air mixture body, and what formed in the second Fuel-air hybrid chamber is light gas-air mixture body.Certainly, in other embodiments, can be also light fuel-air mixture body what formed in the first Fuel-air hybrid chamber, correspondingly, the flame of generation be light combustion flame; And what formed in the second Fuel-air hybrid chamber is dense fuel-air mixture body, correspondingly, the flame of generation is dense combustion flame.
In above-mentioned embodiment, because burner unit 12 and individual tubes 13 are crisscross arranged, and dense, light fuel-air mixture is provided respectively, thus dense, the light combustion flame be interspersed can be formed at the top of burner, and then guarantee good combustion efficiency while attenuating discharged nitrous oxides.In addition, because the distribution openings of the second fuel-air mixture is arranged independent of burner unit, the size of the first Fuel-air hybrid chamber of existing burner unit and structure is made not to need variation; In addition, individual tubes is in the horizontal between adjacent two burner unit, but the first venturi portion lower than burner unit on is vertically arranged, thus the interval between some burner unit does not need adjustment yet, that is, the major constituents of existing burner unit, size and arrangement all do not need adjustment, can realize guaranteeing good combustion efficiency while attenuating discharged nitrous oxides.In other embodiments, the quantity of burner unit 12 can optionally and correspondingly increase and decrease; Or individual tubes also can be arranged higher than the first venturi portion, only now may need to adjust the interval between adjacent burners unit.
Burner unit 12 is also provided with latching device, burner unit 12 and individual tubes 13 all can be fixed on front panel 141.This latching device comprises the upper front end of spontaneous combustion burner unit 12 body to be extended, runs through the first button hook 1241 that front panel 141 bending coordinate with front panel, and the front lower portion of spontaneous combustion burner unit 12 body extends, runs through front panel 141 also the second button hook 1242 of coordinating with individual tubes 13 of bending.
Front panel 141 is provided with the through hole 1411,1412 of the air inlet 1231 of corresponding burner unit 12 and the opening 1321 of individual tubes 13 respectively.Cover plate 11 covers the top of some burner unit 12, and it comprises some flutings 111 of the fire hole 121 for exposing burner unit, and is arranged on the some fiery groove 112 being used for burning for fuel-air mixture between fluting 111.These fiery grooves 112 are positioned at the gap location on adjacent two burner unit 12 tops, and corresponding with the fuel-air mixture distribution openings 131 of corresponding individual tubes 13, and the width of fiery groove 112 is less than the span in the gap between burner unit 12 top.By this set, the fuel of being discharged by distribution openings 131-air mixture rises the gap entered between burner unit 12 top, and in corresponding fiery groove 112 place burning.
In fact, in the present embodiment, the first combustion parts can be considered as by providing some burner unit 12 of dense combustion flame, and will the individual tubes 13 of light combustion flame and corresponding fiery groove 112 be provided to be considered as the second combustion parts.Certainly, just as described above, in other embodiments, burner unit 12 also can be used for generating light fuel-air mixture and producing light combustion flame, and individual tubes 13 can be used for generating dense fuel-air mixture and producing dense combustion flame, therefore, the first and second combustion parts also can exchange.In addition, " independence " of individual tubes is relatively independent for burner unit 12, so in other embodiments, only need guarantee the relative position of individual tubes and burner unit, individual tubes also can integrate on base plate 144.
As shown in Fig. 4, Fig. 6 and Fig. 7, in present embodiment, fuel supply device 15 is arranged on front panel 141, and it comprises fuel gas inlet 151, the first jet 152 towards air inlet 1231 and the second nozzle 153 towards opening 1321.After combustion gas enters from fuel gas inlet 151, by first jet 152 discharged to the first Fuel-air hybrid chamber, and by second nozzle 153 discharged to the second Fuel-air hybrid chamber.The amount that combustion gas exports depends on the outlet size of nozzle, in the present embodiment, because the first Fuel-air hybrid chamber is for mixing dense fuel and air, and the second Fuel-air hybrid chamber is for mixing light fuel and air, so the outlet size of first jet 152 is greater than the outlet size of second nozzle 153, to provide the fuel of more.
Mix after the fuel of first jet 152 ejection enters the first Fuel-air hybrid chamber by air inlet 1231 together together with primary air, and mix after the fuel that second nozzle 153 sprays enters the second Fuel-air hybrid chamber by opening 1321 together together with primary air.Wherein, the introduction volume of air depends on the size of air inlet 1231 and opening 1321, in present embodiment, air inlet 1231 than the opening 1321 of individual tubes size greatly be used for introduce more air capacities.In other embodiments, when the outlet size of first jet 152 is enough large, as long as meet the requirement of dense, the light ratio of design, the size of air inlet 1231 can be equal to or less than the size of opening 1321.
Outlet size d1, the d2 of first, second nozzle 152,153 how is obtained below in conjunction with Fig. 8 introduction, and the size d3 of air inlet 1231 and opening 1321, d4.Fig. 8 is the graph of a relation of primary air ratio and the discharged nitrous oxides experimentally obtained, and wherein transverse axis represents primary air ratio, i.e. the ratio of the primary air amount of Actual combustion and the primary air amount needed for Theoretical combustion; And the longitudinal axis represents the content of nitrogen oxides in effluent, unit is 1,000,000/(ppm).
Suppose to need by the emission control of nitrogen oxide at below 70ppm, then the primary air ratio can choosing dense burning is α 1, and the primary air ratio of light burning is α 2.Next, select the outlet diameter d1 of existing first jet, namely d1 is known, then obtains the outlet diameter d2 of second nozzle accordingly.Such as, the heat flow Q1 that can be produced by the combustion gas of first jet can be calculated according to heat flow computing formula (as follows, wherein Hl, p, s, μ are known).Because the specified heat flow Q of burner is predetermined, so, the heat flow Q2=Q-Q1 that can be produced by the combustion gas of second nozzle can be calculated; Then, then according to heat flow calculate the outlet diameter d2 that formulae discovery goes out second nozzle.
In formula: Q-gas utensil heat flow;
L-gas flow;
Hl-combustion gas low heat value;
D-gas nozzle aperture;
P-gaseous-pressure;
S-combustion gas relative density;
μ-nozzle bore discharge coefficient.
Gas flow L1 by first jet and second nozzle and L2 can be calculated equally by heat flow computing formula, and according to primary air ratio α 1, the α 2 of dense, the light burning chosen in advance, primary air flow L3, L4 of entering the first venturi portion 123 and the second venturi portion 132 can be obtained.In addition, enter the flow velocity of the first venturi portion 123 and the second venturi portion 132 owing to can extrapolate primary air according to the rotating speed of air exhauster, thus just can calculate size d3, the d4 of air inlet 1231 and opening 1321 in conjunction with primary air flow L3, L4.
Those of ordinary skill in the art it is conceivable, that the combustion chamber of the gas fired-boiler of illustrating in above-mentioned embodiment is closed structure, so need rely on air exhauster carry out exhausting to promote the flowing of combustion gas and air.But in other embodiments, if combustion chamber is non-tight mechanism, then burner also realizes burning by the free convection of air, and that is, burner of the present invention can be applicable in the gas and hot water equipment of Blower-free driving equally.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are drawn together in the present invention.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this description is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of description is only for clarity sake, those skilled in the art should by description integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (15)
1. a burner, is characterized in that, this burner comprises:
At least two burner unit, each burner unit comprises some fire holes and the first Fuel-air hybrid chamber of aligned lengthwise, described first Fuel-air hybrid chamber be used for generate and transmit the first fuel-air mixture to described fire hole, described at least two burner unit be transversely arranged side by side and at an upper portion thereof between form gap;
Second Fuel-air hybrid chamber, for generating the second fuel-air mixture; And
At least one fuel-air mixture distribution openings, it is independently arranged relative to described at least two burner unit, and is communicated with described second Fuel-air hybrid chamber gas with in the described gap of at least two burner unit described in being dispensed to by the second fuel-air mixture.
2. burner according to claim 1, is characterized in that: this burner comprises individual tubes further, and it has the sidewall that lengthwise extends; At least one fuel-air mixture distribution openings described be arranged on described sidewall towards in the part in described gap.
3. burner according to claim 2, is characterized in that: described individual tubes comprises opening and the blind end at the longitudinal two ends laying respectively at its sidewall further; Described second Fuel-air hybrid chamber to be formed in region that described sidewall encloses and between described opening and blind end.
4. burner according to claim 2, is characterized in that: described first Fuel-air hybrid chamber has the first Venturi tube (venturi) part; Described individual tubes in the vertical direction is arranged lower than described first venturi portion.
5. burner according to claim 4, is characterized in that: described second Fuel-air hybrid chamber has the second venturi portion in the horizontal between described at least two burner unit.
6. burner according to claim 3, is characterized in that: described first Fuel-air hybrid chamber has air inlet; This burner comprises fuel supply device further, and it comprises towards the first jet of described air inlet and the second nozzle towards described opening; The outlet size of wherein said first jet is greater than the outlet size of described second nozzle, to provide the fuel of more.
7. burner according to claim 6, is characterized in that: described air inlet than the opening of described individual tubes size greatly be used for introduce more air capacities.
8. burner according to claim 1, it is characterized in that: this burner comprises cover plate further, described cover plate covers on the top of described at least two burner unit and described some fire holes is come out, and the gap location of described cover plate between described at least two burner unit is provided with at least one fiery groove, the width of at least one fiery groove described is less than the width in described gap.
9. burner according to claim 2, is characterized in that: this burner also comprises the framework at least two burner unit described in accommodation and described individual tubes; Described at least two burner unit comprise latching device to be used for described at least two burner unit and described individual tubes to be all fixed on framework.
10. burner according to claim 9, is characterized in that: described framework comprises front panel; Described latching device comprises and extends through described front panel and coordinate with it with the first button hook described at least two burner unit be fixed on described framework, and extends through described front panel and coordinate with described individual tubes with the second button hook described individual tubes be fixed on described framework.
11. burners according to claim 1, is characterized in that: described first fuel-air mixture is dense fuel-air mixture, and described second fuel-air mixture is light fuel-air mixture; Described first and/or second fuel-air mixture comprises gas-air mixture body.
12. 1 kinds of burners, is characterized in that, this burner comprises:
First combustion parts, it comprises the some tabular burner unit be transversely arranged side by side; Each burner unit is provided with row's fire hole at its top along longitudinally, for the one provided in dense combustion flame and light combustion flame;
Second combustion parts, it comprises some individual tubes and some fiery grooves, between two that wherein each individual tubes is arranged on the arbitrary neighborhood of described some burner unit, described some fiery grooves to be arranged between fire hole row and to associate the another kind arranged for providing in dense combustion flame and light combustion flame with individual tubes.
13. burners according to claim 12, is characterized in that: this burner comprises further and covers in described some burner unit and expose the cover plate of described fire hole; Described some fiery grooves are arranged on the cover board, and in described individual tubes, perforate is to provide fuel one air mixture to corresponding fiery groove place burning.
14. 1 kinds of gas and hot water equipment, is characterized in that, this equipment comprises:
Burner according to any one of the claims;
Heat exchanger; And
Combustion chamber, accommodates described burner and heat exchanger, and allows that heat trnasfer that described burner combustion produces is to described heat exchanger.
15. gas and hot water equipment according to claim 14, is characterized in that: this equipment also comprises air exhauster, and it is communicated with from combustion chamber, extract flue gas out and in combustion chamber, inputs fresh air simultaneously with described combustion chamber gases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210121833.4A CN102635863B (en) | 2012-04-08 | 2012-04-08 | Burner and fuel gas hot water equipment adopting same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210121833.4A CN102635863B (en) | 2012-04-08 | 2012-04-08 | Burner and fuel gas hot water equipment adopting same |
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| Publication Number | Publication Date |
|---|---|
| CN102635863A CN102635863A (en) | 2012-08-15 |
| CN102635863B true CN102635863B (en) | 2015-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210121833.4A Active CN102635863B (en) | 2012-04-08 | 2012-04-08 | Burner and fuel gas hot water equipment adopting same |
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Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604123A (en) * | 2013-11-08 | 2014-02-26 | 威能(无锡)供热设备有限公司 | Metal fiber burner and gas water heating equipment adopting same |
| CN105091341B (en) * | 2014-05-16 | 2019-04-12 | 林内株式会社 | Heat source machine |
| CN204006008U (en) * | 2014-06-27 | 2014-12-10 | 艾欧史密斯(中国)热水器有限公司 | Gas premixing burner |
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| CN113865110B (en) * | 2021-09-26 | 2023-03-24 | 广东万和新电气股份有限公司 | Gas water heater and control method and device thereof |
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