CN201344621Y

CN201344621Y - Coal-fired and oil-fired boiler

Info

Publication number: CN201344621Y
Application number: CNU2008201320558U
Authority: CN
Inventors: 李永淳
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-13
Filing date: 2008-07-30
Publication date: 2009-11-11
Anticipated expiration: 2018-07-30
Also published as: KR100776971B1

Abstract

The utility model relates to a coal-fired and oil-fired boiler used for supplying hot water and heating. The coal-fired and oil-fired boiler adopts the structure that, in the central hollow part of a heat exchanging body which is hollow, hermetically sealed and double-cylinder shaped, the combustion chamber of an oil-fired boiler and the heat-exchange part of the oil-fired boiler are integrally distributed below the heat-exchange part of a coal-fired boiler. In the utility model, The integration of the oil-fired boiler and the coal fired boiler into the utility model has the advantages of improving the heating efficiency, reducing the volume of the boiler, and reducing the boiler installation space to the utmost extent; the cost of fuel necessary to meet heating demands of larger houses is reduced, and meanwhile, the frost cracking phenomenon can be prevented.

Description

Coal-fired, fuel oil dual-purpose boiler

Technical field

The utility model relates to a kind of fire coal, fuel oil dual-purpose boiler that is used for heat supply water and heating.

Background technology

The history of heating and the development of human civilization have close getting in touch, and the most original heating mode is the heating that utilizes bonfire, are at that time and culinary art and usefulness.

The method need be used to discharge the opening of indoor cigarette, and because heating effect is to realize that by the radiation of bonfire is hot therefore very limitation can not feed through to whole room.Thereby Europe was provided with the method that lid and chimney can effectively be discharged fume for raising utilizes the heating effect of bonfire to study afterwards.The predecessor of This Is England boiler.But its efficient is 20%-30% only also, therefore in Northern Europe of cold be fully to improve indoor temperature, has carried out at bonfire front masonry wall or brick wall, with the research of the width increase radiation effect that enlarges high temperature.

This is called stone and builds radiator.

And then, utilize iron plate also to realize identical effect, be called Taken Plate, and continued to use 20 beginnings of the century.It is further to raise the efficiency the flow direction of having guided cigarette dexterously that stone is built radiator, thereby flows long path in stove, thereby fully uses the heat that comprises in the cigarette.Pechka, the Pechka of Russia of the Kapellenofen of Germany, Holland are exactly one of them, and its efficient has improved 70%-80%.

The irony radiator has appearred in the development along with casting iron technology after this, and is especially more remarkable in its development of the U.S..Reason is to open up at that time building based on wooden building, and it is very difficult therefore radiator to be set.The coal storage type radiator that wherein can save the hard work that continues to add briquette works out the back also by the contrary Europe that outputs to, and further improvement is senior radiators such as noble's type.

The U.S. occurred further developing from radiator utilize hot-blast stove (furnace) directly to add hot-air after be fed to the system in each room by air channel (duct).Warm braw heating that Here it is.And after having occurred since the middle ten days in 19th century utilizing boiler to make hot water or steam, Europe is fed to the heating system in each room in a building.These are referred to as central type heating (central heating), and distinguish with the each door type heating.Because the cleannes of this heating mode room air significantly improve.Since 19 the end of the century air-conditioning technical more flourishing, and the heating be included in wherein as the some functions of the apparatus of air conditioning.

Thereby in the state-owned a heatable brick bed that makes plume through underfloor heating floor.The warm a heatable brick bed of Korea S form from these development.

So-called heating system is meant the same equipment that can play heating effect separately of image-stone oil oven.At present, as thermal source use timber, oil, combustion gas,, and do not use coal etc. to produce the fuel of a lot of cigarette ashes basically, yet because it is cheap so the trend that increases a little with the utilization rate of coal as thermal source occurred in the area that does not have city gas supply, and under remote districts can the situation of cheap purchase timber, as thermal source dual-purpose briquette and timber.

Comparatively speaking, electricity is the energy of very health but it is on the high side, and the use of heat-pump-type heating system recently increases gradually.

Heating system and building one form is called heating system, though different with heating system also have and can not clearly distinguish.

Refer generally to the thermal source apparatus is placed on the central type heating of the three unities.Utilize the direct-fired mode of radiator to be called direct heating in doors, the mode that the air that heats is supplied to each room is called indirect heating or warm braw heating.

Directly heating is divided into two kinds of convection type and radiant types according to the anti-by the use of thermal means of radiator.Convection type be most of heat release from convection heat transfer' heat-transfer by convection for example: cast iron radiator, sole formula radiator, fan convector heater (fan convector) etc.

Radiant type is meant most of heat release all from what radiate, and heat delivery surface is arranged on ground usually and is called radiant panel.Utilize radioactive heating mode because up and down temperature difference is few, therefore be applicable to the hall of rising in the sky, meeting room, dwelling house etc.

Directly heating is called steam for heating at the heating agent of conveying heat during for steam, and heating agent is called the warm water heating during for warm water.Compare with warm water heating, be easy to the uniform temperature that at short notice room temperature improved after steam for heating begins to warm oneself, but it has defectives such as the big and control and management difficulty of noise, so the most recently used example is fewer.

Indirect heating be will utilize the air of air regulator or warm wind furnace heating be directed in the room by the air channel and warm oneself.Utilize air cleaner to purify air and humidification this moment, can introduce fresh extraneous air etc. and mediate for obtaining comfortable heating, therefore is better than direct heating.

Present this system and refrigerating function and usefulness, thus be designed to so-called conditioner (air regulator).

Directly heat will be fed to the just pipeline that needs in the room during heating, equipment takes up space also few, but the space that needs big thick air channel, cross section to pass through during indirect heating, so constructional project is brought certain restriction.

As the thermal source apparatus of heating system boiler the most generally.Steam for heating uses steam boiler, and the warm water heating have use Lukewarm water boiler with the situation of using steam boiler with heat exchanger making warm water.The thermal source apparatus that uses heat pump is also arranged, this moment and refrigeration system and usefulness.A plurality of boilers are arranged in the large-scale high building, a plurality of activities are also arranged, thereby constitute complicated heat source system.

As prior art coal-fired, fuel oil dual-purpose boiler, the fire coal according to prior art, the skeleton diagram of fuel oil dual-purpose boiler have been shown among Fig. 1 a and Fig. 1 b, disclose in the open utility model of Korea S 1999-0035981 number (1999.09.15 is open) and be provided with and the Lukewarm water boiler of the oil burning boiler (or gas fired-boiler) of normal operation together is provided with, thus the fire coal that is provided with braziers of dual-purpose, firebrand material dual-purpose boiler economically.

The utility model accompanying drawing 1a and 1b illustrate coal-fired, firebrand material dual-purpose boiler are located at the calcspar in the oil burning boiler.Fig. 1 a illustrates coal-fired, firebrand material dual-purpose boiler 120 is connected the state that moves economically with the hot-water boiler 130 that is formed by oil burning boiler or gas fired-boiler, inflow entrance at boiler body utilizes circulating pump 121 to connect the heating pipeline, and together by another check-valves 122 respectively has been connected feed pipe by check-valves with the Lukewarm water boiler 130 that oil burning boiler or combustion gas body boiler form at the outlet pipeline.Fig. 1 b illustrates fire coal, firebrand material dual-purpose boiler 120 and is formed Lukewarm water boiler 130 by oil burning boiler or gas fired-boiler and utilizes different modes to be connected the state of operation, inflow entrance at boiler body connects an end of heating pipeline by circulating pump 128, and is connected the other end of the pipeline of warming oneself with check-valves 125 by automatic air pin 123 at outlet.

The prior art is to use the structure of fire coal, firebrand material dual-purpose boiler 120 and oil burning boiler or gas fired-boiler respectively, is provided with respectively to interconnect pipeline behind the boiler and form.There is the shortcoming that thereby two boiler initial investment expenses increases is set respectively and needs to manage respectively in this structure.

Can lift the sectional view of fuel oil shown in Figure 2, coal-fired dual-purpose boiler as another prior art coal-fired, fuel oil dual-purpose boiler.

Authorize the utility model communique to disclose fuel oil, coal-fired dual-purpose boiler for 20-0320285 number, the energy as boiler can arbitrarily use briquette or oil, and need not to change in addition boiler and just can distinguish or use coal-burning boiler function and oil burning boiler function simultaneously, the heat exchanger that is located at boiler body inside is integrally formed.

When using as coal-burning boiler after in the braziers case 208 of heat exchanger 200, acquiring briquette, burn thermal current that coal produces and discharge gas and portal and 209 discharge, and flow through and be discharged to the outside by coal-burning boiler chimney 206 along the circle type hot channel of coal-burning boiler heat exchanger 220 by being located at braziers hot type on the braziers case 208 top madial walls.

When as above coal-fired hot gas is discharged, the heat exchanger case 200a inner water sleeve (Water Jacket) of heat exchanger 200 upper layer part and also surplus oil burning boiler middle level that firepower arranged and upper strata heat exchanger 240,230 peripheries be wrapped in the hot water coil conduit generation heat exchange on braziers case 208 upper stratas, thereby can use boiler heating water and hot water.On the other hand, use thermo oil boiler to start the back since the firepower that burner 210 operations are discharged deeply extend to carry out heat exchange with heat exchanger 200 below water jackets for the first time among the 210a of oils burner that heat exchanger case 200a inside forms after, be discharged to braziers case 208 along circle type hot channel clockwise direction, the flow through oil burning boiler lower floor heat exchanger 250 of the 210a of oils burner outer wall of its adjacency section, its hot gas rises to the middle level heat exchange vertical pipe 240a that is located at its upper strata then, after clockwise circle hot channel rotation, flow through the again oil burning boiler middle level heat exchanger 240 of the middle level heat exchange vertical pipe 240a outer wall that is adjacent, and rise to the upper strata heat exchange vertical pipe 230a that is located at its upper strata, flow through along the clockwise hot channel of circle then, and the oil burning boiler chimney 207 that forms by the adjacency section outer wall that connects above-mentioned upper strata heat exchange vertical pipe 230a is discharged to outside the body 100.

As mentioned above, utilization is along the showing tremendous enthusiasm power of oil burning boiler lower floor heat exchanger 250 with the burner of the hot channel circulation discharge of oil burning boiler middle level heat exchanger 240, oil burning boiler upper strata heat exchanger 230, and water jacket by heat exchanger 200 inside and the hot water pipeline that is wrapped in braziers case 208 outsides, realized boiler water and hot water supply.

Described oil burner combustion chamber 210a is not towards the heat exchanging pipe of circle shape but inwards to form expansive space be in order to prevent that burner 210 flames from narrow space unburnt phenomenon taking place.

Above-mentioned prior art is wholely set coal-burning boiler and oil burning boiler, but the pipeline that is used for the heat that heat exchange briquette burning produces is provided with separately with the pipeline that is used to exchange the heat that the oil burning boiler burning produces, and this structure is to work out for the problem that overcomes the gas attack heat exchanger surface that the briquette burning produces.

Yet, prior art is that coal-burning boiler and oil burning boiler is incorporate, therefore be corroded to use the time when certain of heat exchanger, whole boiler has also been use up service life, thereby there is the problem that needs replacing or maintenance, therefore there is no need to form other burning and gas-exhausting pipe or heat exchange space with labyrinth.

And, oil burner combustion chamber 210a is not located at heat exchanger inside in the prior art, and be arranged on exterior lateral sides, the heat exchange space so that the combustion heat in the exhaust is flowed through, the combustion heat that produces in the time of can not be with a lot of primary starting fuel oil is communicated to that heat is passed in the medium water and outside stream drains to, therefore has the irrational mix that can not effectively utilize the combustion heat.

The utility model content

The utility model relates to a kind of fire coal, fuel oil dual-purpose boiler that is used for heat supply water and heating, relates in particular to a kind of existing fire coal, fuel oil dual-purpose boiler and has the structure that connecting pipe is only used is set respectively behind oil burning boiler and the coal-burning boiler.Thereby the utility model improves the thermal efficiency with each oil burning boiler and the design of coal-burning boiler one, thereby and reduce boiler volume and reduce boiler to greatest extent the place is set, and can save the required fuel cost in house of the certain scale that is used to warm oneself, can prevent to freeze brokenly simultaneously phenomenon.

The utility model is mainly used on the low capacity boilers such as average family and hot house, and as the device that can distinguish or start simultaneously fuel oil and coal-burning boiler, purpose is to provide replaceability and use and the good boiler plant of the thermal efficiency.The heat exchanger and the heat exchanger one design that utilizes briquette of the burner that is used for combustion oil will be provided with, and the hot channel of formation one connection, thereby can supply the warm water and the hot water of boiler, can distinguish or use briquette or oil simultaneously as the energy of boiler, and unlike prior art, change boiler separately, just can distinguish or use the function of coal-burning boiler and the function of oil burning boiler simultaneously, thereby can significantly reduce heating fee, in the startup owing to change that postpone the opportunity of briquette when warm water temperature descends in the boiler, by being located at the temperature sensor of the heating of the perception on heat exchanger case temperature in the heat exchanger, when confirming that warm water temperature is found to be lower than uniform temperature, automatically start oil burner, thus the heating warm water or the hot water temperature that can keep boiler.

And aspect time utilization, can eliminate the inconvenience when needing in time to change the inconvenience of briquette and to go out for a long time, and replaceability with briquette and oil and structure with respect to the excellent in heat efficiency of expense.

And the utility model will be used to discharge the movable passageway one design of the combustion heat of the passage of the combustion heat of oil burning boiler and coal-burning boiler, thereby simplify boiler structure, enlarge hot reception and registration efficient in view of the above to greatest extent.The phenomenon of corrosion takes place in boiler internal heat exchanger surface, is that the sulfur component that takes place during owing to combustion fuel and the condensing water mutual effect of heat exchanger surface condensation take place.

The principle that condensing water takes place boiler internal is identical with the principle of the kettle surface condensation globule that cold water is housed, below uniform temperature, the temperature on heat exchanger surface is very low, but because the combustion heat and heat exchanger internal temperature than higher, therefore will form condensing water on ice-cold relatively heat exchanger surface.So dissolve into the sulfuric acid gas that is included in the fuel oil in the condensing water that forms, and along with rise water evaporates in the condensing water that dissolves in sulfuric acid gas of temperature, thus on the heat exchanger surface only residual strength sulfuric acid corrosion heat exchanger surface.Reason material-sulfuric acid the gas of corrosion heat exchanger takes place during than fuel oil more when fire coal, and coal-fired gas is the essential factor of corrosion heat exchanger, and a plurality of condensing water and sulfuric acid gas take place when lighting a fire coal-burning boiler especially in the early stage.

The utility model is considered the problems referred to above, improve temperature with oil burning boiler when starting boiler in the early stage, therefore thereby few relatively sulfuric acid gas takes place in simple and easy igniting briquette, reaches flame-out oil burning boiler behind the proper temperature and has realized reducing the effect in fuel and prolonged boiler service life.

And, thereby when igniting at initial stage start oil burning boiler adheres to fuel oil ash and burning in heat exchanger inside carbon film, therefore protect heat exchanger to avoid the influence of the sulfuric acid gas that the initial stage takes place when coal-fired, thus the service life of prolonged boiler.Though its short when only using oil burning boiler in service life, compare the prolonged boiler life-span relatively when only using coal-burning boiler.Another advantage is, because the oil burning boiler combustion chamber is positioned at the below of briquette combustion chamber, does not include moisture and lights briquette for the evaporation briquette when therefore again not needing the initial stage to light a fire, and the quick burning carbon of lighting a fire earlier refires the subsidiary work of briquette.

The utility model is for realizing that above-mentioned problem relates to a kind of fire coal, fuel oil dual-purpose boiler, relate in particular to a kind of can heat supply water and heating, and coal-burning boiler and oil burning boiler are designed to fire coal, the fuel oil dual-purpose boiler of a body, in the central authorities of the heat exchanger of the dual drum of hollow and sealing, the heat exchange department one of the combustion chamber of oil burning boiler and oil burning boiler is arranged in the heat exchange department below of coal-burning boiler.

The dual winding hot water pipeline of heat exchanger inwall outer peripheral edges at above-mentioned heat exchanger, and an end of hot water pipeline connects the heat exchanger top, link to each other with the hot water inlet after connecting aiutage and extending perforation heat supply hydrothermal exchange body, its other end then connects the heat exchanger top and extends the perforation aiutage and communicates with heat supply hydrothermal exchange body inside, thereby hot water can be fed in the hot water permutoid, the hot water that is filled in the heat supply hydrothermal exchange body combines with hot water outlet by pipeline, thereby can be with the hot water supply user, heat exchanger is inner then passes on material-water filling by heat with heat supply hydrothermal exchange body inside.

Side on the heat exchanger inwall of above-mentioned heat exchanger is provided with a pair of steam vent that is used to discharge fired coal combustion gas and oil inflame gas, the burning gases of discharging from steam vent are discharged to exhaust outlet through aiutage, the burning gases of aiutage of flowing through heat the heat exchanger of adjacent rows inflator inner peripheral setting and the heat supply hydrothermal exchange body that abuts against on the outer peripheral edges, and discharge by exhaust outlet.

Be located in the oil burning boiler combustion chamber of above-mentioned heat exchanger central authorities and produce, and the flowing through channel of the burning gases that move towards the top through the oil burning boiler heat exchange department is, the burning gases of briquette move towards the top through coal-burning boiler heat exchange portion, but intercepted by the fire pot lid, thereby by being located at a pair of steam vent discharge of heat exchanger upper inside wall side, the burning gases of discharging by steam vent then transfer the flow direction through aiutage to because the burning gases of a pair of arc derive part mobile towards the exhaust outlet direction.

Above-mentioned aiutage is designed to ellipse, and except that the part that is provided with temperature sensor and level sensor, has the shape that holds heat exchanger with elliptical shape, the aiutage lower end then begins from heat supply hydrothermal exchange body 64 lower ends obliquely exhaust outlet to be set so that discharge the cigarette ash that produces in the aiutage, said temperature sensor and level sensor connect heat supply hydrothermal exchange body, and the perforation heat exchanger, but be not subjected to influence through the burning gases of aiutage.

Above-mentioned oil burning boiler combustion chamber is arranged in below the heat exchanger for ease of briquette is heated, and for preventing the acidifying of bottom surface, combustion chamber to take place owing to the combustion heat of burner, by bottom surface, combustion chamber that is provided with refractory brick above it and the side, combustion chamber that forms the heat exchanger bottom, fuel oil heat exchange department lower plate forms the space.

Above-mentioned oil burning boiler heat exchange department is the lower portion of heat exchanger, and be arranged in the top of oil burning boiler combustion chamber, be provided with the fuel oil heat exchange department lower plate and the fuel oil heat exchange department upper plate that is provided with the outlet of circle hole shape heat-exchange tube of circle hole shape heat-exchange tube inlet, the heat-exchange tube inlet interconnects with the heat-exchange tube outlet, so that the burning gases that produce in the oil burning boiler combustion chamber are flowed through, burning heat-exchange tube and the fuel oil heat exchange department upper plate top of passing on the combustion heat for the water that is filled in burning heat-exchange tube outside are arranged, and the heat exchange heating plate that inner peripheral terminal with the briquette air supply pipe and the heat exchange heating plate is welded, with the outer peripheral edges solder bond of heat exchange heating plate, and keep with plate for the heat exchange that available heat is passed on and the heat exchange heating plate forms the inner space jointly and to form.

With the heat exchange heating plate outer peripheral edges positioned adjacent that is positioned at above-mentioned oil burning boiler heat exchange department upper end, restriction braziers position, and reduce the combustion noise of burner, and and restriction combustion gas flow, thus the fire pot of hollow of can simple and easy heat passing on and circular plate shape is with deriving part.

Above-mentioned coal-burning boiler heat exchange portion is that braziers abuts against heat exchange heating plate top and is provided with, in braziers, place the briquette that uses as main fuel, the terminal solder bond of the inner peripheral of heat exchange heating plate and briquette air supply pipe, connecting the briquette air supply pipe and the fuel oil heat exchange department lower plate central authorities of extending down welds, and the briquette air supply pipe that extends welds through perforation bottom surface, combustion chamber, oil burning boiler combustion chamber central authorities, and the briquette air supply pipe that extends is designed to the L type, and bolt is set endways for ease of discharging cigarette ash, thereby can combine with the bolt of extension air supply pipe one side that is located at the rectilinear tubes shape, extending the air conditioning lid that the setting of air supply pipe opposite side can be regulated the air capacity that is fed to briquette.

The burner combustion mouth that is provided with the burner that is used for combustion oil in above-mentioned oil burning boiler combustion chamber one side connects heat exchanger lateral wall and the formation of side, combustion chamber, for making the flame that produces on the burner arrive at the briquette below, towards the burner direction flame input port is set in the briquette air supply pipe central authorities that connect the oil burning boiler combustion chamber.

The utility model is main boiler as fire coal, compare with oil burning boiler and can significantly reduce fuel cost, thereby and become a body can improve heat to greatest extent each boiler design to pass on efficient, and can pass on by simple and easy realization available heat, thereby reduce heat cost, and can prevent the accident of freezing brokenly few owing to the briquette caloric value or that briquette stops working and takes place in the winter that temperature descends, can automatically actuated oil burning boiler according to temperature sensor that can perception low temperature, thereby start boiler for the pipeline that prevents to warm oneself freezes brokenly, therefore can eliminate pipeline freezes brokenly possibility.

Description of drawings

Fig. 1 a and 1b are the skeleton diagram according to the dual-purpose boiler of prior art.

Fig. 2 is the fuel oil according to prior art, the sectional view of coal-fired dual-purpose boiler plant.

Fig. 3 is the exploded perspective view according to fire coal of the present utility model, fuel oil dual-purpose boiler.

Fig. 4 is the sectional view according to fire coal of the present utility model, fuel oil dual-purpose boiler.

Fig. 5 is the exploded perspective view according to fire coal of the present utility model, fuel oil dual-purpose boiler major part.

Fig. 6 is the sectional view according to fire coal of the present utility model, fuel oil dual-purpose boiler top.

Reference numeral

10: coal-fired, fuel oil dual-purpose boiler 12: burning gases are derived part 18: sealing plate

20: oil burning boiler combustion chamber 21: refractory brick 22: the burning heat-exchange tube

23: heat-exchange tube outlet 24: heat-exchange tube inlet 25: heat exchange is kept and is used plate

26: oil burning boiler heat exchange department 27: heat exchange heating plate 28: fuel oil heat exchange department upper plate

29: fuel oil heat exchange department lower plate 30: burner 31: burner faying face

32: burner combustion mouth 34: flame 36: the flame input port

40: briquette 42: braziers 43: extend air supply pipe

44: briquette air supply pipe 45: fire pot is with deriving part 45 ': fire pot is with deriving part

46: air conditioning lid 48: coal-burning boiler heat exchange portion 50: heat exchanger

51: temperature sensor 52: heat exchanger inwall 53: level sensor

54: hot water pipeline 60: the hot water inlet 62: hot water outlet 64: heat supply hydrothermal exchange body

66: aiutage 68: exhaust outlet 70: running water supply pipe 74: valve

76: heating water is supplied with bucket 80: bottom surface, combustion chamber 82: side, combustion chamber 84: bolt connection piece

90: lid 92: fire pot lid 93: fire pot lid flange 94: steam vent

96: heating water supplying pipe 97: heating pipeline 98: heating water return outlet 99: pipe cleaning valve

The specific embodiment

Structure of the present utility model to existing coal-fired, fuel oil dual-purpose boiler is similar, but its advantage that has is body can be designed to one.

Describe embodiment of the present utility model with reference to the accompanying drawings in detail.

Fig. 1 a and 1b show the skeleton diagram according to the dual-purpose boiler of prior art, Fig. 2 shows according to the fuel oil of prior art, the sectional view of coal-fired dual-purpose boiler plant, Fig. 3 shows the exploded perspective view according to fire coal of the present utility model, fuel oil dual-purpose boiler 10, and Fig. 4 shows the sectional view according to fire coal of the present utility model, fuel oil dual-purpose boiler.

Fig. 3 and Fig. 4 show and can be used in heat supply water and heating, and coal-burning boiler and oil burning boiler be designed to the fire coal of a body, the exploded perspective view and the boiler face shaping of oil burning boiler 10, also shows the sectional view of boiler internal.

Fig. 4 is for the sectional view of simple illustration fire coal, fuel oil dual-purpose boiler 10 and structure and mark.

Structure coal-fired, fuel oil dual-purpose boiler 10 is, downside at the heat exchanger 50 of the dual drum of hollow and sealing is arranged oil burning boiler combustion chamber 20, above oil burning boiler combustion chamber 20 in abutting connection with the heat exchange department 26 of oil burning boiler is set, and above oil burning boiler heat exchange department 26 in abutting connection with the structure that the heat exchange department 48 of coal-burning boiler is set.

This structure is mainly to use the structure of briquette, when warming oneself, normal combustion briquette 40 problem can not take place, but because the cold outside air temperature problem that the next pipeline 97 of might warming oneself of just following situation freezes brokenly when very low, owing to go out not supply briquette 40 for a long time so that during briquette 40 completing combustions, when perhaps not having spendable briquette 40 stocks, new briquette 40 is fed to heat that boiler produces uses up so be fed to the heating heat of heating pipeline 97 when not enough for the new briquette 40 of lighting a fire, because when precipitate cold is utilized the absolute shortage of heat of briquette 40 supply, because the hot water use amount is during too much therefore with the absolute shortage of heat of briquette 40 supplies, the temperature sensor 51 that is connected on the heat exchanger 50 is measured temperature, and start-up burner 30 and start oil burning boiler, finally prevent to freeze brokenly accident to replenish not enough heat.

And, use a heat exchanger 50, even use briquette 40 or oil also to need not other structure thereby act as a fuel, and use same heat exchanger 50, therefore can simplified structure, the combustion chamber placement of oil burning boiler is below briquette 40, thereby need not to use quick burning carbon into igniting briquette 40, and passing through to form flame input port 36 on the briquette air supply pipe 44 of oil burning boiler combustion chamber 20, thereby can make flame 34 directly arrive at briquette 40 bottoms, igniting utilizes flame 34 briquette 40 of lighting a fire again behind the oil burning boiler.

Illustrate that structure coal-fired, fuel oil dual-purpose boiler 10 is as follows, be stamped two what upper end coal-fired, fuel oil dual-purpose boiler 10 was arranged, there is one to be to prevent that heat is exposed to outer lid 90, also have one to be to be arranged in to cover 90 belows and prevent that the combustion heat that briquette 40 and oil burning boiler produce from exposing, and for making burning gases discharge the fire pot lid 92 of blocking the top by steam vent 94, the fire pot lid flange 93 that is used to articulate fire pot lid 92 is located at heat exchanger 40 inside.

Arrange braziers 42 at fire pot lid flange 93 downsides, put into the briquette 40 that is used to burn in fire pot inside, adjacency is provided with oil burning boiler heat exchange department 26 below braziers 42.

Oil burning boiler heat exchange department 26 is the lower portion of heat exchanger 50, and be arranged in 20 tops, oil burning boiler combustion chamber, the fuel oil heat exchange department lower plate 29 that is provided with circle hole shape heat-exchange tube inlet 24 and the fuel oil heat exchange department upper plate 28 that is provided with circle hole shape heat-exchange tube outlet 23 with, heat-exchange tube inlet 24 interconnects with heat-

exchange tube outlet

23,20 burning gases that produce flow through in the oil burning boiler combustion chamber thereby make, above the burning heat-exchange tube 22 of passing on the combustion heat for the water that is filled in burning heat-exchange tube 22 outsides and fuel oil heat exchange department upper plate 28, arrange, and with the heat exchange heating plate 27 of the inner peripheral solder bond of the end of briquette air supply pipe 44 and heat exchange heating plate 27 with, thereby solder bond can be accepted more heat in heat exchange heating plate 27 outer peripheral edges and passes on to keep with the 27 common heat exchanges that form inner spaces of heat exchange heating plate and use plate 25 compositions.

Heat exchange heating plate 27 outer peripheral edges that are positioned at above-mentioned oil burning boiler heat exchange department 26 upper ends are in abutting connection with setting, and braziers 42 positions are limited in central authorities and are not partial to any side, also be provided with to reduce and burnt 30 combustion noise and can limit flowing of burning gases, thereby the fire pot of the hollow circular plate shape of can simple and easy heat passing on is with deriving part 45.

Fire pot also can be arranged to the circle shape with fire pot with derivation part 45 ' as shown in Figure 5 with deriving part 45 can vertical direction be provided with as shown in Figure 4 up.Fire pot is the passage (the fire pot spacing that derives between part 45 ' and the heat exchanger inwall 52) of the burning gases of generation in the restriction oil burning boiler combustion chamber 20 with the advantage that derives part 45 ', thereby heat is communicated to heat exchanger 50, and performance reduces the muffler effect of burning room noise.

Above-mentioned oil burning boiler combustion chamber 20 is arranged in heat exchanger 50 belows for ease of giving briquette 40 heating, for preventing because the bottom surface, combustion heat combustion chamber 80 of burner is subjected to the acidifying that the direct heating of flame 34 causes, also expose the initiation heat loss by very thin bottom surface, combustion chamber 80 simultaneously for the heat that prevents flame 34 generations, bottom surface, combustion chamber 80 by being provided with refractory brick 21 up and the side, combustion chamber 82 that forms heat exchanger 50 downsides with, fuel oil heat exchange department lower plate 29 forms spaces.Thereby the side, combustion chamber 82 that forms oil burning boiler combustion chamber 20 passes on material-water filling to form the downside of heat exchanger 50 with the opposite side of fuel oil heat exchange department lower plate 29 by heat.That is to say that the flame 34 that produces in the burner combustion mouth 32 carries out heat reception and registration by the water of side, combustion chamber 82 and fuel oil heat exchange department lower plate 29 and heat exchanger 50 inside.Though not shown, the additional insulation material that is provided with is to prevent heat loss, for good in the boiler outside of bottom surface, combustion chamber 80.

The hot water pipeline 54 that dual winding hot water passes through on heat exchanger inwall 52 outer peripheral edges of above-mentioned heat exchanger 50, thereby connecting heat exchanger 50 tops, an end of hot water pipeline 54 can add hot water, connect aiutage 66 and extend perforation heat supply hydrothermal exchange body 64 backs and be connected with hot water inlet 60, the other end connects heat exchanger 50 tops, and extending perforation aiutage 66 communicates with heat supply hydrothermal exchange body 64 inside, thereby hot water can be fed to heat supply hydrothermal exchange body 64 inside, the hot water that is filled in heat supply hydrothermal exchange body 64 inside combines with hot water outlet 62 by pipeline, thereby with the hot water supply user, material-water filling is then passed on by heat with heat supply hydrothermal exchange body 64 inside in heat exchanger 50 inside.

Side in heat exchanger inwall 52 upper ends of above-mentioned heat exchanger 50 is provided with a pair of steam vent 94 that is used to discharge fired coal combustion gas and oil inflame gas, the burning gases of discharging from steam vent 94 are discharged to exhaust outlet 68 through aiutage 66, the burning gases of aiutage 66 of flowing through heat with the heat supply hydrothermal exchange body 64 that abuts against on the outer peripheral edges the heat exchanger 50 of adjacent rows inflator 66 inner peripheral settings, and discharge by exhaust outlet 68.

Be located in the oil burning boiler combustion chamber 20 of above-mentioned heat exchanger 50 central authorities and produce, and the flowing through channel of the burning gases that move towards the top through oil burning boiler heat exchange department 26 is, the burning gases of briquette 40 move towards the top through coal-burning boiler heat exchange portion 48, but intercepted by fire pot lid 92, thereby by a pair of steam vent 94 discharges that are located at heat exchanger inwall 52 upper side, the burning gases of discharging by steam vent 94 then transfer the flow direction through aiutage 66 to because the burning gases of a pair of arc derive part 12 mobile towards exhaust outlet 68 directions.

Heat exchange heating plate 27 tops are provided with for braziers 42 abuts against in above-mentioned coal-burning boiler heat exchange portion 48, in braziers 42, place the briquette that uses as main fuel, the inner peripheral of heat exchange heating plate 27 and briquette air supply pipe 44 terminal solder bond, connecting the briquette air supply pipe 44 that extends down welds with fuel oil heat exchange department lower plate 29 central authorities, and the briquette air supply pipe 44 that extends welds through 20 perforation bottom surfaces, combustion chamber, oil burning boiler combustion chamber, 80 central authorities, and the briquette air supply pipe 44 that extends is designed to the L type, and bolt is set endways for ease of discharging cigarette ash, thereby can combine with the bolt of extension air supply pipe 43 1 sides that are located at the rectilinear tubes shape, extending the air conditioning lid 46 that air supply pipe 43 opposite side settings can be regulated the air capacity that is fed to briquette.

Below with reference to Fig. 4 according to the sectional view of fire coal of the present utility model, fuel oil dual-purpose boiler and Fig. 5 according to the exploded perspective view of fire coal of the present utility model, fuel oil dual-purpose boiler major part and the sectional view of Fig. 6 according to fire coal of the present utility model, fuel oil dual-purpose boiler top, the running status of coal-burning boiler of the present utility model and oil burning boiler is described.

The utility model is most of boiler that uses briquette 40 that acts as a fuel, and the content of carrying out heat exchange after explanation briquette 40 burnings earlier then illustrates the flowing through channel of the burning gases of oil burning boiler.

Briquette 40 is placed in the braziers 42, and the burning gases that burning briquette 40 produces rise after being located at the hole on the briquette 40.The heat that briquette 40 burnings produce then heats by 42 pairs of heat exchanger inwalls 52 of braziers.Heat reception and registration material in heat exchanger 50 inner face fillings is water, and heating is wrapped in the water of the hot water pipeline 54 interior tricklings on the heat exchanger inwall 52.

Braziers 42 is intercepted by top fire pot lid 92 with the burning gases that expand into the briquette top that rise, therefore discharge by a pair of steam vent 94, and the gas of discharging since burning gases derive part 12 flow direction of gas be converted to around heat exchanger 50 outer flow mistakes, outside the exhaust of derivation is flow through aiutage 66 and is discharged to by exhaust outlet 68.

The exhaust of flowing through this moment is passed on heat to being arranged in the heat exchanger 50 in the aiutage 66 and centering on its outside heat supply hydrothermal exchange body 64, and by blast pipe 68 discharges, the flow velocity of the exhaust of discharging by narrow steam vent 94 is fast, and flow velocity slows down during the aiutage 66 of flowing through relatively spacious, thereby the cigarette ash of the shape of particle that comprises in the exhaust or carbon particle drop to below the aiutage 66 owing to flow velocity slows down.The cigarette ash or the foreign matter that fall for ease of cleaning are designed to simultaneously exhaust outlet 68 is arranged on aiutage 66 bottom towards having a down dip below aiutage 66.

The briquette 40 that burns needs oxygen supply.Oxygen supply is finished by briquette air supply pipe 44, and shown in the sectional view of Fig. 4, the briquette air supply pipe 44 that welding prolongs is provided with flame input port 36 in 20 inside, coal-burning boiler combustion chamber towards the burner direction.

Flame input port 36 is used for flame 34 is arrived to flame-out briquette 40 so that briquette 40 catches fire smoothly.

Thereby the L type end of briquette air supply pipe 44 is provided with bolt and can arbitrarily turns on and combination, and to be the carbon ash that takes place for simple and easy removing burning briquette 40 move and be filled in the carbon ash of briquette air supply pipe 44 and design along heat exchange heating plate 27 for this.

Thereby the bolt connecting portion 84 that extends on bolt also being set and being located at briquette air supply pipe 44 on the air supply pipe 43 combines, and the other end that extends air supply pipe 44 is provided with air conditioning lid 46 and is used to regulate the air capacity of supplying with briquette 40.

Then the operating mode of the oil burning boiler of coal-burning boiler is supported in explanation.The burner 30 of the oil burning boiler of one be combined into below the coal-burning boiler be located at fire coal, fuel oil dual-purpose boiler 10 below a side, the nozzle of combustion oil is that burner combustion mouth 32 connects below coal-fired, fuel oil dual-purpose boiler 10, and is connected oil burning boiler combustion chamber 20 1 sides that produce flame 34.The flame 34 that the produces oil that combustion jet goes out owing to the oxygen of supplied burner 20 in oil burning boiler combustion chamber 20 also produces burning gases.It is water that burning hot burning gases are communicated to heat reception and registration material with heat exchange department lower plate 29, burning heat-exchange tube 22 with heat by the side, combustion chamber 82 that holds 20 outsides, oil burning boiler combustion chamber.

A part is by flame input port 36 heating briquettes 40 in the burning gases that produce this moment, and most of burning gases move towards the top through burning heat-exchange tube 22.Above burning heat-exchange tube 22, keep with plate 25 and surrounded the space with heat exchange heating plate 27 and heat exchange, accept heat and be communicated to briquette 40 belows again from the burning gases that burning heat-exchange tube 22 flows into, heat conveys to the water that is filled in the heat exchanger 50 the most at last.For passing on more heat utilization heat exchange to keep flowing through of burning gases bent with plate 25 towards heat exchanger 50.

That is to say that burning gases are kept with the plate 25 sealed plate 18 in back that gets off along heat exchange and intercepted, flow through thereby the flow direction of burning gases is converted to along heat exchanger inwall 52, thereby the flowing through channel that so just can prolong burning gases is passed on more hot.

Sealing plate 18 changes flowing through of burning gases, and it is kept with the spatial flow mistake between plate 25 and the heat exchanger inwall 52 along heat exchange, and then flows out with deriving the narrow space that forms between part 45 ' and the heat exchanger inwall 52 by fire pot.

Why burning gases are being flow through fire pot with deriving the narrow space that forms between part 45 ' and the heat exchanger inwall 52, it is the combustion noise that takes place in the burner 30 on the burner faying face 31 in order to prevent to be connected, why form narrow combustion gas path and the relative spacious burning gases passage of flowing through, be in order to realize reducing the effect of noise, and the combustion heat that comprises in the slow place of burning gases flow velocity can be with burning gases is effectively passed on feedwater as muffler.Fire pot is kept with plate 25 with structure that derives part 45 ' and heat exchange and is provided with separately, and as another embodiment, fire pot is that heat exchange is kept with plate 25 and formed towards the top extension with derivation part 45, or be welded separately.

Through the space of flowing through again and forming with the burning gases of deriving the narrow space that part 45 ' and heat exchanger inwall 52 form by braziers 42 and heat exchanger inwall 52 by fire pot, and conduct heat for heat exchanger 50, after this burning gases flow through identical with flowing through of the burning gases of above-mentioned briquette 40.

Flowing through of the burning gases that act as a fuel burning the briquette 40 that uses takes place during with oil as above being described, having the following describes flowing through of water.

Water is then supplied by heating water supply port 96 by running water supply pipe 70, the water of warming oneself, and supplies by hot water inlet 60 as the water that hot water uses.The heating water is after valve 74 outflows of running water supply pipe 70, flowing through is used to regulate the common heating water that heating water is fed to the water yield of buoy when not enough and supplies with bucket 76, replenishes through the heating water supplying pipe 96 that is located at fire coal, fuel oil dual-purpose boiler 10 tops that evaporation takes place the required water of heating again and breach when not enough.

Heating water supplying pipe 96 connects coal-fired, fuel oil dual-purpose boiler 10 tops, and connects 64 connections of heat supply hydrothermal exchange body, and is connected amount under-supply on the heat exchanger 50, utilizes not shown pump that warm water is fed to heating pipeline 97 at last.The warm water of heating pipeline 97 of flowing through is passed on heating heat, and the warm water that cools off turns back to heat exchanger 50 by heating water return outlet 98, by after coal-fired, fuel oil dual-purpose boiler 10 heating, repeats heating by heating water supply port 96 more again.

Flowing through of hot water is, the water that flows out from running water supply pipe 70 is by behind the valve 74, flow in fire coal, the fuel oil dual-purpose boiler 10 by hot water inlet 60 again, that hot water inlet 60 connects is coal-fired, fuel oil dual-purpose boiler 10 gabarits are heat supply hydrothermal exchange body 64 outer walls, and links to each other with hot water pipeline 54 on heat exchanger inwall 52 peripheries that are wrapped in heat exchanger 5 inboards.

Hot water pipeline 54 can twine a circle, two circle or multi-turns.The order of winding is at this moment, and the water that flows into from the outside is water at low temperature, so more hot for faster acceptance, abuts against heat exchanger inwall 52 layouts, passes on thereby can be that smooth reception is hot oil and the briquette 40 from fuel.

Jia Re warm water twines secondary, three times once more twining once hot water pipeline outside like this.

Pass through aiutage 66 by the hot water that is wrapped in hot water pipeline 54 heating on the heat exchanger inwall 52, and be filled in heat supply hydrothermal exchange body 64 inside through the hot water pipeline 54 that is communicated with heat supply hydrothermal exchange body 64.

Heat supply hydrothermal exchange body 64 is arranged in the outermost of fire coal, fuel oil dual-purpose boiler 10, and is arranged in the top.Why arranging heat supply hydrothermal exchange body 64 up, is because hot gas moves towards the top, and for being implemented in the heat exchange that the top is well on, has arranged heat supply hydrothermal exchange body 64 and hot water pipeline 54, aiutage 66 on top coal-fired, oil burning boiler 10.Being filled in the water that has heated in hot water and the heat supply hydrothermal exchange body 64 in the heat supply hydrothermal exchange body 64 by hot water pipeline 54 mixes, it is even to mix the back temperature, and the hot water outlet 62 that giving birth to of taking place when utilizing pump pressed (sound pressure) to flow through and be located on the heat supply hydrothermal exchange body 64 is supplied with users.

Hot water temperature and the temperature of heating water and the warm water water level of heat exchanger 50 for measuring fire coal, fuel oil dual-purpose boiler 10 are provided with temperature sensor 51 and level sensor 53 as shown in Figure 6.Temperature sensor 51 is used to measure the warm water temperature of heat exchanger 50 inside, the temperature controlling instrument of displays temperature sensor senses (not shown in the accompanying drawing) is attached to coal-fired, fuel oil dual-purpose boiler 10 outsides, and the controller (not shown) in place that is arranged on indoor or the needs heating that hot house is inner is according to temperature actuated fire coal, the fuel oil dual-purpose boiler 10 of indoor setting and heat more calory burning.

Temperature displayed too rises and shows on the temperature sensor 51, take place unusual on the water supplying pipe, or there is an overheated problem, this is to move the phenomenon that takes place simultaneously owing to coal-burning boiler and oil burning boiler, operation by ending oil burning boiler just can head it off, the operation of ending oil burning boiler also still exists when unusual, and the alarm that is located on the control instrument will ring, thereby informs and need carry out stringent effort.Owing to too much use hot water, heat with burning briquette 40 can not improve the hot water temperature just can not solve shortage of heat the time, be located at the temperature of setting in the indoor controller when being lower than the temperature of temperature sensor 51 perception (can set the start-up temperature of oil burning boiler than design temperature height), the under-supply heat of igniting oil burning boiler.

Hot water is by the warm of the hot water pipeline 54 extract heat permutoids 50 of fire coal, fuel oil dual-purpose boiler 10 inside, therefore when the heat that takes place when burning briquette 40 is inadequately to the heat of hot water reception and registration, the temperature of heat exchanger 50 internal water will descend, when the temperature of temperature sensor 51 perception is lower than the temperature that starts oil burning boiler and set, the oil burning boiler of will lighting a fire, then flame-out when opposite.

But be used to light a fire or the design temperature same settings or different setting of flame-out oil burning boiler.

Level sensor 53 together is arranged on heat exchanger 50 inside with temperature sensor 51, keeps a certain amount of for making the water yield that is filled in the heat exchanger 50, thereby prevents boiler overheating by heating water supply port 76 under-supply water.

Be provided with heating water return outlet 98 in lower end coal-fired, oil burning boiler 10, the opposition side that is provided with heating water return outlet 98 is provided with pipe cleaning valve 99, and it is used to clean pipe interior, and heating water return outlet 98 can mutual alternative be arranged on the place of being convenient to be provided with pipe cleaning valve 99.

The utility model is as the fire coal, the fuel oil dual-purpose boiler that are used for heat supply water and heating, oil burning boiler and coal-burning boiler are designed to one, even thereby a side boiler can not start and also can continue to use boiler, and can significantly reduce heating fee, and the mode that connects oil burning boiler and coal-burning boiler respectively is different with having now, can thereby space, flexible utilization space be set the reduced volume minimizing.

The utility model is wholely set coal-burning boiler and oil burning boiler, thereby when the main coal-burning boiler that uses, also to use heat supply water when the warm water with, when only starting the coal-burning boiler shortage of heat, briquette is missing of ignition and when shortage of heat takes place, when briquette all burns down, start oil burning boiler by the temperature sensor sense temperature, therefore the fuel cost when only using oil burning boiler is compared significantly cost saving.

When only using coal-burning boiler as thermal source, the briquette in winter of severe cold is missing of ignition and when shortage of heat takes place, exist when briquette all burns down and freeze broken danger, so the utility model can fundamentally prevent owing to the breakage of freezing brokenly the heating installation that causes.

The utility model belongs to the direct heating system in the heating system of above-mentioned explanation, and as the Lukewarm water boiler of thermal source dual-purpose briquette with oil.And as above the fuel oil of the present utility model of Xing Chenging, coal-fired dual-purpose boiler plant start coal-burning boiler or oil burning boiler respectively or simultaneously, also because separately hot channel is separate, does not therefore influence the other side and burn startup.

As above with reference to description of drawings according to fire coal of the present utility model, fuel oil dual-purpose boiler 10, but the utility model is not limited in this specification can carry out flexible Application among the disclosed embodiment and accompanying drawing in the scope of technological thought protection.

Claims

1. a fire coal, fuel oil dual-purpose boiler, be used for the coal-burning boiler of hot-water supply and heating and fire coal, the fuel oil dual-purpose boiler that oil burning boiler is designed to a body, it is characterized in that, in the central hollow portion of the heat exchanger of the dual drum of hollow and sealing, the heat exchange department one of the combustion chamber of oil burning boiler and oil burning boiler is arranged in the heat exchange department below of coal-burning boiler.

2. fire coal according to claim 1, fuel oil dual-purpose boiler, it is characterized in that, the dual winding hot water pipeline of heat exchanger inwall outer peripheral edges at above-mentioned heat exchanger, one end of hot water pipeline connects the heat exchanger top, perforation aiutage and extension link to each other with the hot water inlet after connecting heat supply hydrothermal exchange body, and the other end then connects the heat exchanger top and extends the perforation aiutage and communicates with heat supply hydrothermal exchange body inside.

3. fire coal according to claim 1, fuel oil dual-purpose boiler, it is characterized in that, side on the heat exchanger inwall of above-mentioned heat exchanger is provided with a pair of steam vent that is used to discharge fired coal combustion gas and oil inflame gas, the burning gases of discharging from steam vent are discharged to exhaust outlet through aiutage, the burning gases of aiutage of flowing through heat the heat exchanger that abuts against the setting of aiutage inner peripheral and the heat supply hydrothermal exchange body that abuts against on the outer peripheral edges, and discharge by exhaust outlet.

4. fire coal according to claim 3, fuel oil dual-purpose boiler, it is characterized in that, above-mentioned aiutage is designed to begin to hold from the outside of the part that is provided with temperature sensor and level sensor the ellipse of heat exchanger, the aiutage lower end then begins the oblique exhaust outlet that is provided with from heat supply hydrothermal exchange body lower end

Said temperature sensor and level sensor connect heat supply hydrothermal exchange body, and connect heat exchanger, but are not subjected to the influence through the burning gases of aiutage.

5. fire coal according to claim 1, fuel oil dual-purpose boiler, it is characterized in that, above-mentioned oil burning boiler combustion chamber placement is below heat exchanger, and the bottom surface, combustion chamber by being provided with refractory brick above it and the side, combustion chamber that forms the heat exchanger bottom with, fuel oil heat exchange department lower plate forms the space.

6. fire coal according to claim 1, fuel oil dual-purpose boiler, it is characterized in that, above-mentioned oil burning boiler heat exchange department is the lower portion of heat exchanger, and be arranged in the top of oil burning boiler combustion chamber, be provided with the fuel oil heat exchange department lower plate and the fuel oil heat exchange department upper plate that is provided with the outlet of circle hole shape heat-exchange tube of circle hole shape heat-exchange tube inlet, the heat-exchange tube inlet is connected with the heat-exchange tube outlet, above the burning heat-exchange tube of passing on the combustion heat for the water that is filled in burning heat-exchange tube outside and fuel oil heat exchange department upper plate, arrange, and the heat exchange heating plate that inner peripheral terminal with the briquette air supply pipe and the heat exchange heating plate is welded with, the outer peripheral edges solder bond of heat exchange heating plate, and keep with plate with the heat exchange that the heat exchange heating plate forms the inner space jointly and to form.

7. fire coal according to claim 1, fuel oil dual-purpose boiler is characterized in that, with the heat exchange heating plate outer peripheral edges positioned adjacent that is positioned at above-mentioned oil burning boiler heat exchange department upper end, and restriction braziers position.

8. fire coal according to claim 1, fuel oil dual-purpose boiler, it is characterized in that, above-mentioned coal-burning boiler heat exchange portion is that braziers abuts against heat exchange heating plate top and is provided with, in braziers, place the briquette that uses as main fuel, the terminal solder bond of the inner peripheral of heat exchange heating plate and briquette air supply pipe, connecting the briquette air supply pipe and the fuel oil heat exchange department lower plate central authorities of extending down welds, and the briquette air supply pipe that extends welds through perforation bottom surface, combustion chamber, oil burning boiler combustion chamber central authorities, and the briquette air supply pipe that extends is designed to the L type, and bolt is set endways for ease of discharging cigarette ash, thereby can combine with the bolt of extension air supply pipe one side that is located at the rectilinear tubes shape, extending the air conditioning lid that the setting of air supply pipe opposite side can be regulated the air capacity that is fed to briquette.

9. according to any described fire coal, fuel oil dual-purpose boiler in the claim 1 to 8, it is characterized in that, the burner combustion mouth that is provided with the burner that is used for combustion oil in above-mentioned oil burning boiler combustion chamber one side connects heat exchanger lateral wall and the formation of side, combustion chamber, towards the burner direction flame input port is set in the briquette air supply pipe central authorities that connect the oil burning boiler combustion chamber.