CN104776432A - Natural gas-fired boiler and combustor thereof - Google Patents

Natural gas-fired boiler and combustor thereof Download PDF

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Publication number
CN104776432A
CN104776432A CN201510173723.6A CN201510173723A CN104776432A CN 104776432 A CN104776432 A CN 104776432A CN 201510173723 A CN201510173723 A CN 201510173723A CN 104776432 A CN104776432 A CN 104776432A
Authority
CN
China
Prior art keywords
natural gas
air
introduction channel
burner
channel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510173723.6A
Other languages
Chinese (zh)
Inventor
潘建峰
金肖琴
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HANGZHOU FULTON THERMAL EQUIPMENT CO Ltd
Original Assignee
HANGZHOU FULTON THERMAL EQUIPMENT CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HANGZHOU FULTON THERMAL EQUIPMENT CO Ltd filed Critical HANGZHOU FULTON THERMAL EQUIPMENT CO Ltd
Priority to CN201510173723.6A priority Critical patent/CN104776432A/en
Publication of CN104776432A publication Critical patent/CN104776432A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22BMETHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B31/00Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/62Mixing devices; Mixing tubes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT GENERATING MEANS, IN GENERAL
    • F24H1/00Water heaters having heat generating means, e.g. boiler, flow- heater, water-storage heater
    • F24H1/22Water heaters other than continuous-flow or water storage heaters, e.g. water-heaters for central heating
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT GENERATING MEANS, IN GENERAL
    • F24H9/00Details
    • F24H9/18Arrangement or mounting of grates, burners, or heating elements

Abstract

The invention discloses a combustor. The combustor comprises a natural gas guiding-in channel and an air guiding-in channel which is provided with a fan, wherein a tail-end outlet of the natural gas guiding-in channel is communicated with the air guiding-in channel, and the part, communicated with the air guiding-in channel, of the tail-end outlet is positioned on the upstream of the fan. According to the combustor disclosed by the invention, natural gas can be exhausted when the natural gas guiding-in channel is not kept at a high pressure, so that gas can be supplied to a natural gas-fired boiler by using an existing civil natural gas pipe network without the need of independently paving natural gas pipelines and building a pressure regulation station, and thus the use cost of the natural gas-fired boiler is greatly reduced. In addition, the mixing distance between natural gas and air is remarkably increased by arranging the tail-end outlet on the upstream of the fan while the use cost is reduced, and the natural gas and the air can be lighted after being sufficiently mixed. The invention also provides the natural gas-fired boiler provided with the combustor.

Description

A kind of combustion natural gas boiler and burner thereof
Technical field
The present invention relates to boiler manfacturing technical field, more particularly, relate to a kind of burner, the invention still further relates to the one combustion natural gas boiler with said burner.
Background technology
Combustion natural gas boiler is the equipment of water containing heat energy or steam by the chemical energy in natural gas, the heat energy obtained by medium derivation boiler with for people to use.Burner is the important component part of combustion natural gas boiler, and it is responsible for natural gas and air to mix by a certain percentage and ignition.Combustion flame sprays into airtight burner hearth, and the radiant heat of generation and high-temperature flue gas heat are conducted to the water side of boiler body.Flue gas after thermal energy conduction feedwater becomes waste gas and passes through smoke stack emission.
In the prior art, (in figure, black arrow is natural gas to the operation principle of burner as shown in Figure 1, white arrow is air, black and white mixing arrow is the mist of natural gas and air), burner mainly comprises natural gas introduction channel 01, air introduction channel and hybrid channel 02.Wherein, natural gas introduction channel 01 is communicated with hybrid channel 02, mix with air for natural gas is imported in hybrid channel 02, natural gas introduction channel 01 is provided with and controls its logical gas valve group 03 of closing, the end that natural gas introduction channel 01 is positioned at hybrid channel 02 is provided with natural gas nozzle 04 and flow guiding disc 05.On air introduction channel, be provided with in air intake air introduction channel, and air is entered to the blower fan 06 in hybrid channel 02, after air enters into hybrid channel 02, first mix with the natural gas sprayed from natural gas nozzle 04, mist further mixes through flow guiding disc 05 again, discharges afterwards from the exhaust ports of hybrid channel 02, exhaust ports is provided with the igniter 07 can lighting mist, and flame monitoring apparatus 08.Further, due to larger noise can be produced when blower fan 06 sucks air, so be also provided with muffler 010 at air inlet 09 place of air introduction channel, to reduce the noise produced when blower fan sucks air.
But inventor finds, the burner of said structure also exists certain defect: because natural gas nozzle is arranged on the downstream of blower fan, so when burner operation, due to the air draft effect of blower fan, makes the downstream of blower fan have certain blast.And in order to ensure that natural gas can spray smoothly under blast from natural gas nozzle, just need the pressure making the natural gas in natural gas introduction channel keep higher, and this force value is beyond the pressure of civil natural gas pipe network in city, cause combustion natural gas boiler cannot use existing civil pipeline nearby, thus need lay natural gas line separately and build voltage regulating station, and the laying of natural gas line and build the with high costs of voltage regulating station, cost of building a station separately exceedes the cost of combustion natural gas boiler itself sometimes, have a strong impact on the user satisfaction of client to combustion natural gas boiler.
Secondly, in existing hybrid channel, air and natural gas mix here from natural gas nozzle, until mist is discharged from exhaust outlet, the distance of this section of mixing is very short, causes air and natural gas mixing to be not very abundant, CO, NO, NO of producing after order burning 2more Deng pernicious gas.
Again, in order to reduce the noise of fan induced draught, be provided with muffler, the cost of combustion natural gas boiler is raised.
Therefore, how reducing the use cost of combustion natural gas boiler, is current those skilled in the art's problem demanding prompt solution.
Summary of the invention
In view of this, the invention provides a kind of burner, this kind of novel burner, by the end outlet of natural gas introduction channel is changed to blower fan upstream from blower fan downstream, and be communicated with air introduction channel, make combustion natural gas boiler that civil natural gas pipe network can be used to carry out air feed, thus significantly reduce the use cost of combustion natural gas boiler, air and natural gas can also be made to be mixed more fully, decrease the generation of pernicious gas.
In order to achieve the above object, the invention provides following technical scheme:
A kind of burner, comprise natural gas introduction channel and the air introduction channel being provided with blower fan, wherein, the end outlet of described natural gas introduction channel is communicated with described air introduction channel, and described end outlet and described air introduction channel be communicated with the upstream that position is positioned at described blower fan.
Preferably, in said burner, the upstream section being positioned at described blower fan of described air introduction channel, is provided with and is communicated with the air inlet of described air introduction channel and the Venturi tube of described blower fan, and contraction section or the throat of described end outlet and described Venturi tube are communicated with.
Preferably, in said burner, the air inlet of described air introduction channel is connected with Venturi tube, contraction section or the throat of described end outlet and described Venturi tube are communicated with.
Present invention also offers a kind of combustion natural gas boiler, comprise body of heater and burner, this burner is the burner described in above-mentioned any one.
Preferably, in above-mentioned combustion natural gas boiler, also comprise and be arranged on outside described burner, described burner to be enclosed within the housing in self inner chamber, and described housing offers air intlet, the housing sidewall that the housing sidewall at described air intlet place and the air inlet of described air introduction channel align is two different laterals of described housing.
In burner provided by the invention, compared with existing burner, eliminate the setting of natural gas nozzle, flow guiding disc and muffler, and make the end outlet of natural gas introduction channel no longer be positioned at the downstream of blower fan, but the upstream it being moved to from hybrid channel blower fan is arranged, and distal opening is communicated with air introduction channel, both connection positions are then positioned at the upstream of blower fan.Changed by this kind, the natural gas in natural gas introduction channel can be made to enter into air introduction channel from end outlet, because natural gas enters into air introduction channel from the upstream of blower fan, and blower fan by air intake air introduction channel time, under the air draught effect of blower fan, the position that air introduction channel is positioned at blower fan upstream is subnormal ambient, so natural gas is when entering into air introduction channel, be inhaled in air introduction channel, therefore natural gas introduction channel also can realize the discharge of natural gas when not keeping high pressure, thus order combustion natural gas boiler can use existing civil natural gas pipe network to carry out air feed, without the need to laying natural gas line separately again and building voltage regulating station, greatly reduce the use cost of combustion natural gas boiler.Further, while reduction use cost, by distal opening is arranged on blower fan upstream, also increase significantly the mixing distance of natural gas and air, both orders are lighted after can fully mixing again.And after natural gas and air mix, also through blower fan, under the stirring of draught fan impeller, natural gas and air can be made further fully to mix, make the mixing of natural gas and air reach perfect condition, reduce and even avoid CO, NO, NO 2etc. the generation of harmful gas.Present invention also offers the one combustion natural gas boiler with said burner.
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 in the following describes is only embodiments of the 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 the accompanying drawing provided.
Fig. 1 is the fundamental diagram of burner in prior art;
The fundamental diagram of the burner that Fig. 2 provides for the embodiment of the present invention;
Fig. 3 is the pressure broken line graph of burner each several part provided by the invention;
Fig. 4 be housing and air intlet schematic diagram is set.
In Figs. 1-4:
Natural gas introduction channel 01, hybrid channel 02, gas valve group 03, natural gas nozzle 04, flow guiding disc 05, blower fan 06, igniter 07, flame monitoring apparatus 08, air inlet 09, muffler 010;
Natural gas introduction channel 1, blower fan 2, Venturi tube 3, air inlet 4, hybrid channel 5, housing 6, air intlet 7.
Detailed description of the invention
The invention provides a kind of burner, this kind of novel burner, by the end outlet of natural gas introduction channel is changed to blower fan upstream from blower fan downstream, and be communicated with air introduction channel, make combustion natural gas boiler that civil natural gas pipe network can be used to carry out air feed, thus significantly reduce the use cost of combustion natural gas boiler, air and natural gas can also be made to be mixed more fully, decrease the generation of pernicious gas.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figures 2 and 3, the burner that the embodiment of the present invention provides, compared with existing burner, there is natural gas introduction channel 1 and the air introduction channel being provided with blower fan 2 equally, difference is then, the distal opening of natural gas introduction channel 1 is communicated with air introduction channel, and is communicated with the upstream of position at blower fan 2, instead of be arranged in hybrid channel 5 again, namely the distal opening of natural gas introduction channel 1 is no longer arranged on the downstream of blower fan 2.
In the present embodiment, " upstream ", " downstream " and " end " etc. refer to the word in direction, are the flow directions based on air or natural gas.In Fig. 2, black arrow is natural gas, and white arrow is air, and black and white mixing arrow is the mist of natural gas and air.
In the present embodiment, by the distal opening by being originally arranged on the natural gas introduction channel 1 in hybrid channel 5, be connected to be positioned at blower fan 2 upstream air introduction channel on, two objects can be realized simultaneously, namely the discharge pressure of natural gas is reduced, enable natural gas use common civilian pipe network conveying, what can also increase natural gas and air mixes distance simultaneously, and both orders mix more fully.Blower fan 2 is when carrying out work, it can by air intake in air introduction channel, this just makes the space being positioned at blower fan 2 upstream in air introduction channel be negative pressure state, and be connected in the natural gas introduction channel 1 on this position and have natural gas, under the effect of negative pressure, natural gas is when without the need to being inhaled in air introduction channel when high drive, realize mixing of natural gas and air, so can not high pressure conditions be kept in natural gas introduction channel 1, thus realize using civilian pipe network for combustion natural gas boiler air feed, avoid and lay natural gas line separately and the expense input of building voltage regulating station, significantly reduce use cost.Meanwhile, due to the change of natural gas and air contact position, also increase both mixing distances, improve its mixing uniformity, decrease the generation of pernicious gas.
In order to further optimisation technique scheme, in the burner that the present embodiment provides, in the upstream section being positioned at blower fan 2 of air introduction channel, be provided with and be communicated with the air inlet 4 of air introduction channel and the Venturi tube 3 of blower fan 2, contraction section or the throat of end outlet and Venturi tube 3 are communicated with.Because Venturi tube 3 is when carrying fluid, negative pressure can be produced at its contraction section and throat, so in the present embodiment, Venturi tube 3 being linked in air introduction channel, become a part for air introduction channel and play the effect of carrying air.Venturi tube 3 is in the process of conveying air, based on its operation principle, air introduction channel produces on the basis of negative pressure in blower fan 2 air draught, larger negative pressure can be further formed at contraction section and place of throat, so the distal opening of natural gas introduction channel 1 to be arranged on contraction section or the throat of Venturi tube 3, further can improve the suction effect to natural gas, better ensure the abundant suction of natural gas, this is preferred embodiment.The present embodiment further preferred distal opening is communicated with the throat of Venturi tube 3, because the negative pressure of throat is maximum, its effect sucking natural gas is best.
In addition, the setting position of Venturi tube 3 on air introduction channel can have multiple choices, as long as ensure that it is in blower fan 2 upstream, Venturi tube 3 can be linked into air introduction channel has segment distance position apart from its air inlet 4, make Venturi tube 3 as a part for air introduction channel, but more preferably Venturi tube 3 is connected directly between on air inlet 4, make Venturi tube 3 as an elongated segment part of air introduction channel, now the fluid intake of Venturi tube 3 is the air inlet 4 of air introduction channel, as shown in Figure 2 and Figure 4.This kind of set-up mode is without the need to transforming other positions of air introduction channel, and retrofit work amount is little, and transformation difficulty is also lower, is preferred version.
Based on the burner provided in above-described embodiment, the embodiment of the present invention additionally provides a kind of combustion natural gas boiler, and this combustion natural gas boiler has the burner provided in above-described embodiment.
And, in the combustion natural gas boiler that the present embodiment provides, also comprise and be arranged on outside burner, burner to be enclosed within the housing 6 in self inner chamber, and housing 6 offers air intlet 7, the housing sidewall that the housing sidewall at air intlet 7 place and the air inlet 4 of air introduction channel align is two different laterals of housing 6, as shown in Figure 4.Because the burner that the present embodiment provides eliminates the higher muffler of cost, the noise produced at air inlet 4 place when making blower fan 2 suck air cannot be eliminated, so in order to make up this defect, in the present embodiment, outside whole combustion natural gas boiler, be provided with the closed shell 6 only staying an air intlet 7, and the sidewall of the housing 6 making the sidewall of the housing 6 at air intlet 7 place and the air inlet 4 of air introduction channel align, be two different laterals, namely air inlet 4 air draught direction and air intlet 7 to offer direction different, thus when burner is run, air is first through air intlet 7, enter air inlet 4 again, in this process, the noise that air inlet 4 produces through housing 6 inwall and be positioned at the reflection of boiler part and the absorption of housing 6, the intensity of noise can be made significantly to reduce, to play sound deadening.
Because this combustion natural gas boiler have employed the burner that above-described embodiment provides, so the beneficial effect that should be brought by burner at combustion natural gas boiler please refer to corresponding part in above-described embodiment, do not repeat them here.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment remaining identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims (5)

1. a burner, comprise natural gas introduction channel and the air introduction channel being provided with blower fan, it is characterized in that, the end outlet of described natural gas introduction channel is communicated with described air introduction channel, and described end outlet and described air introduction channel be communicated with the upstream that position is positioned at described blower fan.
2. burner according to claim 1, it is characterized in that, the upstream section being positioned at described blower fan of described air introduction channel, be provided with and be communicated with the air inlet of described air introduction channel and the Venturi tube of described blower fan, contraction section or the throat of described end outlet and described Venturi tube are communicated with.
3. burner according to claim 1, is characterized in that, the air inlet of described air introduction channel is connected with Venturi tube, and contraction section or the throat of described end outlet and described Venturi tube are communicated with.
4. fire a natural gas boiler, comprise body of heater and burner, it is characterized in that, described burner is the burner in the claims 1-3 described in any one.
5. combustion natural gas boiler according to claim 4, it is characterized in that, also comprise and be arranged on outside described burner, described burner to be enclosed within the housing in self inner chamber, and described housing offers air intlet, the housing sidewall that the housing sidewall at described air intlet place and the air inlet of described air introduction channel align is two different laterals of described housing.
CN201510173723.6A 2015-04-14 2015-04-14 Natural gas-fired boiler and combustor thereof Pending CN104776432A (en)

Priority Applications (1)

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CN201510173723.6A CN104776432A (en) 2015-04-14 2015-04-14 Natural gas-fired boiler and combustor thereof

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Application Number Priority Date Filing Date Title
CN201510173723.6A CN104776432A (en) 2015-04-14 2015-04-14 Natural gas-fired boiler and combustor thereof

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Publication Number Publication Date
CN104776432A true CN104776432A (en) 2015-07-15

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Country Status (1)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2480566Y (en) * 2001-05-10 2002-03-06 上海柴油机股份有限公司 Pipe type flor guiding gas mixer
DE10224350B3 (en) * 2002-05-29 2004-01-22 Webasto Thermosysteme International Gmbh Atomizer burner with a Venturi tube for a heater
CN103453549A (en) * 2013-02-19 2013-12-18 杨斌 Dual-channel mixing ejector of air-blow gas stove
CN103512054A (en) * 2013-01-10 2014-01-15 杨斌 Full pre-mixing injection control device of blast gas oven
CN103615798A (en) * 2013-11-04 2014-03-05 广东万和新电气股份有限公司 Fully premixed combustion gas heating water heater
CN204534582U (en) * 2015-04-14 2015-08-05 杭州富尔顿热能设备有限公司 A kind of combustion natural gas boiler and burner thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2480566Y (en) * 2001-05-10 2002-03-06 上海柴油机股份有限公司 Pipe type flor guiding gas mixer
DE10224350B3 (en) * 2002-05-29 2004-01-22 Webasto Thermosysteme International Gmbh Atomizer burner with a Venturi tube for a heater
CN103512054A (en) * 2013-01-10 2014-01-15 杨斌 Full pre-mixing injection control device of blast gas oven
CN103453549A (en) * 2013-02-19 2013-12-18 杨斌 Dual-channel mixing ejector of air-blow gas stove
CN103615798A (en) * 2013-11-04 2014-03-05 广东万和新电气股份有限公司 Fully premixed combustion gas heating water heater
CN204534582U (en) * 2015-04-14 2015-08-05 杭州富尔顿热能设备有限公司 A kind of combustion natural gas boiler and burner thereof

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Application publication date: 20150715

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