CN207394908U - A kind of air circulation heating and purifier and coal furnace for coal stove - Google Patents

Abstract

The utility model provides a kind of air circulation heating for coal stove and purifier and coal furnace, and device includes heat exchange of heat pipe, air-introduced machine and air filter, heat exchange of heat pipe inner-heating tube, filling heat transfer substance in heat exchanger tube；Horizontal positioned smoke discharge tube road is drawn from the flue gas discharge opening of coal stove, the lower part of heat exchange of heat pipe is arranged in smoke discharge tube road, the top one side of heat exchange of heat pipe is equipped with air intake, air outlet slit is equipped with air intake opposite side, air-introduced machine is arranged at air inlet/outlet, and air filter is arranged at air inlet/outlet.By in coal furnace exhanst gas outlet pipeline air circulation being set to heat and purifier, heat that can be effectively in recovered flue gas simultaneously while purifies room air the utility model.The utility model can increase substantially the flue gas heat utilization ratio of coal furnace, it is only necessary to which smaller heat can heat air, realize Clean and comfortable heating.

Description

A kind of air circulation heating and purifier and coal furnace for coal stove

Technical field

The utility model belongs to coal-fired combustion equipment field, is related to a kind of air circulation heating for coal stove and net Makeup put and using its coal furnace more particularly to it is a kind of based on adopting heat pipes for heat transfer for coal stove air circulation heat and Purifier and apply its coal furnace.

Background technology

At present, the family of northern China certain areas, particularly small towns and country residents generally use native heating heating, Due to the design of cooking stove, science, part coal not can't burn completely and discharged with cigarette, and utilization rate is low, not only coal consumption amount Greatly, and serious pollution can be caused to air.Also, in real life, wast rural area user is while heating, it is also desirable to Stove can use simultaneously and cooking, such as heats up water, cooks and cooking.

At present, on the market domestic stove there are mainly two types of coal-fired forms：

It is positive to burn stove (Fig. 1 (a))：I.e. traditional is most simply also most common direct combustion mode, flame during solid fuel ignition It is propagated along heat smoke nature flow direction, combustion intensity is high, and firepower is prosperous, can meet user's cooking demand.The positive stove that burns is suitable for nothing The low fuel of the volatile matters such as bituminous coal.Although just burn stove have good cooking ability, use bituminous coal dispersion coal or using bituminous coal as Made of raw material during moulded coal, heating of being heated after being added in due to fire coal, Volatile is discharged immediately with flue gas, and volatile matter is difficult to After-flame causes a large amount of black smokes (tar, CO, VOC, sulphur and nitrogen oxide etc.) and popularity taste of choking to be emerged, seriously pollutes environment.

Reverse burning furnace (Fig. 1 (b))：I.e. solid fuel ignition when flame backheating flue gas nature flow direction propagate burning side Formula has the characteristics that delay Volatile speed, and furnace temperature is high, burning is abundant, black smoke can be substantially eliminated, suitable for bituminous coal etc. The high fuel of volatile matter.Since counter combust uses more backhaul designs more firepower is weaker, therefore its is unsuitable to improve after-flame degree It for cooking, can only warm oneself, it is difficult to which by part, common people receive；Simultaneously because planning entire burner hearth is in oxygen-enriched high-temp combustion, Discharged nitrous oxides concentration is higher.

For problem present in conventional oven, people work out the civil that can be applied to cooking and heating simultaneously Stove-gasification furnace (such as CN 201212696Y and CN 201555250U), but there are stove combustion period is strong, load is not easy The defects of adjusting, fire-sealing time is short and coal consumption is big.It can be brought rapidly up after coal, and volatile matter is quickly precipitated, and cause a large amount of Sulphur and nitrogen oxides be drastically precipitated.

However, existing coal-burning stove for heating stove, realizes the Heating stove of smokeless combustion for fuel especially with bituminous coal, is Heating furnace.There is no the northern area of central heating, especially samll cities and towns and rural area, this Household water heating stove application in China It is very wide.Using this coal heating stove heat supply, it is necessary to which mating a set of hot-water heating system, one group is connected to including return water and hot water piping Or multigroup radiator (being commonly called as " native heating "), realize the heat supply to heating space.But it is this using hot-water heating system, pipeline and The cost and mounting cost of radiator are very high, and the heating thermal efficiency is relatively low；And to some buildings, building such as without central heating or Tier building, it is larger using difficulty.

Due to its flue gas often larger heat of content in coal stove, there is higher calorific value Exploitative potential, therefore such as The problem of heat what effectively recycles in coal-fired kiln gas is urgent need to resolve.

Utility model content

For the heating thermal efficiency existing for existing coal-fired cooking hot-blast stove it is low and of high cost the problem of, the utility model Provide it is a kind of based on adopting heat pipes for heat transfer for coal stove air circulation heating and purifier and apply its coal furnace. The utility model, can effective recovered flue gas by setting air circulation heating and purifier in coal furnace exhanst gas outlet pipeline In heat and simultaneously room air is purified.The flue gas heat that the utility model can increase substantially coal furnace utilizes Efficiency, it is only necessary to which smaller heat can both heat air, realize Clean and comfortable heating.

For this purpose, the utility model uses following technical scheme：

In a first aspect, the utility model provides a kind of air circulation heating for coal stove and purifier, institute Stating air circulation heating and purifier includes heat exchange of heat pipe, air-introduced machine and air filter, in the heat exchange of heat pipe Heat pipe is replaced, heat transfer substance is filled in heat exchanger tube；Horizontal positioned smoke discharge tube is drawn from the flue gas discharge opening of coal stove Road, the lower part of the heat exchange of heat pipe are inserted into smoke discharge tube road, and the top one side of heat exchange of heat pipe is equipped with air intake, with Air intake opposite side is equipped with air outlet slit, and air-introduced machine is arranged at air inlet/outlet, and air filter is set It is placed at air inlet/outlet；Built in air scavenging material in the air filter.

Air circulation heating described in the utility model and purifier are applicable to a variety of coal stoves, including coal-fired empty Gas heating stove, coal burning water heating heating stove and coal-fired cooking and heating furnace etc., as long as being arranged at its flue gas discharge opening.

The lower part of heat exchange of heat pipe is arranged on horizontal positioned smoke discharge tube in the air circulation heating and purifier In road, heat smoke flows through lower contacts of the smoke discharge tube road in the process with heat exchanger tube in heat exchange of heat pipe, makes in heat exchanger tube Heat transfer substance is formed steam by thermal evaporation, and steam is to flowing at the top of heat exchanger tube, at the top of heat exchanger tube and by air-introduced machine introducing Air contact is conducted heat, and heats air；Steam in heat exchanger tube, which condenses and gravity is relied on to return to heat exchange bottom of the tube, to be continued and heat Flue gas exchanges heat, and so as to fulfill the recycling of heat in heat smoke, while realizes the circulating-heating of room air.

Meanwhile the air filter in air circulation heating and purifier can carry out intake air or outlet air Purification makes air realize purification while heating again.

Below as the preferred technical solution of the utility model, but not as the limit of technical solution provided by the utility model System, by the following technical programs, can preferably reach and realize the technical purpose and advantageous effect of the utility model.

As the preferred technical solution of the utility model, the heat transfer substance is water, freon -21, Freon-11, fluorine Any one in Lyons -113, ammonium hydroxide, methanol, ethyl alcohol or acetone or at least two combination, the combination are typical but non-linear Example has：The combination of the combination of the combination of water and freon -21, Freon-11 and freon -113, ammonium hydroxide and methanol, ethyl alcohol With the combination of acetone, the combination of water, freon -21, Freon-11 and freon -113, Freon-11, freon -113 and The combination of ammonium hydroxide, the combination of methanol, ethyl alcohol and acetone etc..

As the preferred technical solution of the utility model, the material for air purification is activated carbon, synthetic fibers or HEPA In any one；The material for air purification is at least two layers.

Second aspect, the utility model provide a kind of coal heating stove, the furnace body top side of the coal heating stove Flue gas discharge opening is opened up, horizontal positioned smoke discharge tube road is drawn from flue gas discharge opening, on the smoke discharge tube road is set The air circulation heating stated and purifier；Set in the furnace body of the coal heating stove at the top of furnace body first it is perpendicular every Furnace interior is segmented into the chamber of two connections by plate, the first vertical clapboard, and the first vertical clapboard one side is located at below flue gas discharge opening Chamber is flue gas burning-out zone, and the first perpendicular chamber every opposite side is pyrolytic gasification area, the flue gas burning-out zone and pyrolytic gasification area Lower section is coal-char combustion area, and coal-char combustion area inclined downward sets fire grate, primary air nozzle is set below the fire grate； Overfiren air port is set below the flue gas burning-out zone；The furnace wall of pyrolytic gasification area side is equipped with coal filling hole.

As the preferred technical solution of the utility model, on the furnace wall of the pyrolytic gasification area side burnout degree is set to preheat logical Road, the burnout degree preheating channel lower part set burnout degree entrance, and the top of the burnout degree preheating channel sets burnout degree to go out Mouthful；The furnace wall outsourcing water jacket of the coal-burning stove for heating furnace body；The fire grate is equipped with wind distributing hole；It opens the end of the fire grate If wind distributing hole.

In the utility model, water therein can be heated by furnace body temperature, the hot water after heating is used for heating.Together When, the heat in pyrolytic gasification area, coal-char combustion area and smoke combustion area is can absorb by water jacket, control semicoke combustion can be reached The effect of area's temperature is burnt, avoids coal-char combustion area temperature excessively high, and then avoids coking, NO_x formation of drawing up effectively improves The desulfurization efficiency of solid sulphur formed coal, it is final to realize safety and stability heat supply and flue gas cleaning discharge.

The end of the fire grate opens up wind distributing hole, i.e., described fire grate is designed using part open, the top of fire grate For seamless design, support is provided for fuel, only end opens up wind distributing hole, reduces First air incoming air area, and then reduces semicoke combustion Burn the combustion volume in area.

The heating method of above-mentioned coal heating stove comprises the following steps：

(a) fire coal being added in by coal filling hole in coal-burning stove for heating stove, fire coal carries out pyrolytic gasification into pyrolytic gasification area, Generate tar, volatile matter and semicoke；

(b) tar, volatile matter and the semicoke that step (a) generates flow downward into coal-char combustion area, are passed through with primary air nozzle The air contact that fire grate introduces, makes tar, volatile matter, semicoke and air catalytic combustion；

(c) flue gas generated after step (b) volatile matter, semicoke and air catalytic combustion enters flue gas burning-out zone, with The air contact that overfiren air port introduces carries out an after-flame, and the flue gas in afterburnt enters smoke discharge tube road from flue gas discharge opening, With air circulation heating and purifier in heat exchange of heat pipe in heat exchanger tube exchange heat, the heat transfer substance in heat exchanger tube by Thermal evaporation forms steam, and steam is flowed at the top of heat exchanger tube, contacted at the top of heat exchanger tube with the air introduced by air-introduced machine into Row conducts heat, heating air, and the steam condensation in heat exchanger tube returns to heat exchange bottom of the tube and continues to exchange heat with heat smoke；It is meanwhile empty Gas filter device is filtered air purification.

More specifically, when setting burnout degree preheating channel on the furnace wall of pyrolytic gasification area side, step (b) institute State volatile matter, semicoke contacted with the flue gas generated after air catalytic combustion with the air that overfiren air port introduces carry out an after-flame, It is uncombusted introduce and preheat with burnout degree entrance after air contact and carry out secondary after-flame burning, the flue gas in secondary afterburnt from Flue gas discharge opening enters smoke discharge tube road and carries out subsequent heating treatment.

The third aspect, the utility model provide a kind of coal-fired cooking and heating furnace, the furnace body of the fire coal cooking and heating furnace Top side opens up flue gas discharge opening, and horizontal positioned smoke discharge tube road, the smoke discharge tube are drawn from flue gas discharge opening Road sets above-mentioned air circulation heating and purifier；

Cooking mouth is equipped with flue gas discharge opening opposite side at the top of the furnace body of the coal heating stove, the furnace interior is cooked a meal The lower section of thing mouth sets the first diaphragm plate, and the one side of the first diaphragm plate connects with the furnace wall of furnace body cooking mouth one side, and opposite side is set Put cooking heating changeover module；Burner in cooking is opened up on first diaphragm plate, burner upper cover has mobile lid in the cooking Plate；The lower section of flue gas discharge opening sets the second diaphragm plate, one side and the furnace body chimney one side of the second diaphragm plate in the furnace body Furnace wall connects, and the opposite side of the second diaphragm plate sets the first vertical clapboard perpendicular to the second diaphragm plate, and the first vertical clapboard will be in furnace body Part is segmented into the chamber of two connections, and the chamber positioned at flue gas discharge opening one side is pyrolytic gasification area, positioned at cooking mouth one side Chamber is flue gas burning-out zone；Coal-char combustion area inclined downward sets fire grate, and primary air nozzle is set below the fire grate； Overfiren air port is set below the flue gas burning-out zone；The furnace wall of pyrolytic gasification area side is equipped with coal filling hole.

As the preferred technical solution of the utility model, on the furnace wall of the pyrolytic gasification area side burnout degree is set to preheat logical Road, the burnout degree preheating channel lower part set burnout degree entrance, and the top of the burnout degree preheating channel sets burnout degree to go out Mouthful；The fire grate is equipped with wind distributing hole；The end of the fire grate opens up wind distributing hole.

The cooking heating method of above-mentioned fire coal cooking and heating furnace comprises the following steps：

(a) fire coal being added in by coal filling hole in coal-burning stove for heating stove, fire coal carries out pyrolytic gasification into pyrolytic gasification area, Generate tar, volatile matter and semicoke；

(b) tar, volatile matter and the semicoke that step (a) generates flow downward into coal-char combustion area, are passed through with primary air nozzle The air contact that fire grate introduces, makes tar, volatile matter, semicoke and air catalytic combustion；

(c) flue gas generated after step (b) volatile matter, semicoke and air catalytic combustion enters flue gas burning-out zone, with The air contact that overfiren air port introduces carries out an after-flame, after the flue gas progress cooking heating operation in afterburnt, is discharged from flue gas Mouth exchanges heat into the heat exchanger tube in the heat exchange of heat pipe in smoke discharge tube road, with air circulation heating and purifier, Heat transfer substance in heat exchanger tube is formed steam by thermal evaporation, steam to flowing at the top of heat exchanger tube, the top of heat exchanger tube with by drawing The air contact that wind turbine introduces is conducted heat, heating air, and the steam condensation return heat exchange bottom of the tube in heat exchanger tube continues and heat Flue gas exchanges heat；Meanwhile air filter is filtered air purification.

More specifically, when setting burnout degree preheating channel on the furnace wall of pyrolytic gasification area side, step (b) institute State volatile matter, semicoke contacted with the flue gas generated after air catalytic combustion with the air that overfiren air port introduces carry out an after-flame, It is uncombusted introduce and preheat with burnout degree entrance after air contact and carry out secondary after-flame burning, the flue gas in secondary afterburnt from Flue gas discharge opening enters smoke discharge tube road and carries out subsequent heating treatment.

Compared with prior art, the utility model has the advantages that：

(1) the utility model, can be with by coal furnace exhanst gas outlet pipeline air circulation being set to heat and purifier Heat in effective recovered flue gas simultaneously simultaneously purifies room air, and the flue gas heat that coal furnace is greatly improved utilizes Efficiency allows its flue gas heat utilization ratio to reach more than 80%, it is only necessary to which smaller heat can both heat air；

(2) air circulation described in the utility model heating and purifier are easy to install and use, heating comfort level compared with It is high.

Description of the drawings

Fig. 1 (a) is traditional positive burning stove burning schematic diagram；

Fig. 1 (b) is traditional reverse burning furnace burning schematic diagram；

Fig. 2 is the structure diagram of air circulation heating and purifier described in the utility model embodiment 1；

Fig. 3 is the structure diagram of air circulation heating and purifier described in the utility model embodiment 2；

Fig. 4 is the structure diagram of the coal heating stove described in the utility model embodiment 5；

Fig. 5 is the structure diagram of the coal heating stove described in the utility model embodiment 6；

Fig. 6 is the structure diagram of the coal-fired cooking and heating furnace described in the utility model embodiment 7；

Fig. 7 is the structure diagram of the coal-fired cooking and heating furnace described in the utility model embodiment 8；

Wherein, 1- heat exchange of heat pipes, 2- air-introduced machines, 3- air filters, 4- smoke discharge tubes road, 5- fire grates, 6- Primary air nozzle, 7- overfiren air ports, 8- coal filling holes, 9- burnout degree preheating channels, 10- burnout degree entrances, the outlet of 11- burnout degrees, 12- heating changeover modules, 13- movable cover plates.

Specific embodiment

For the utility model is better described, the technical solution of the utility model is readily appreciated, below to the utility model It is further described.But following embodiments is only the simple example of the utility model, does not represent or limit this practicality New rights protection scope, scope of protection of the utility model are subject to claims.

The utility model specific embodiment part provides a kind of for the air circulation heating of coal stove and purification dress It puts and the coal stove using the device, the air circulation heating and purifier includes heat exchange of heat pipe 1, air-introduced machine 2 With air filter 3,1 inner-heating tube of heat exchange of heat pipe, the interior filling heat transfer substance of heat exchanger tube；From the cigarette of coal stove Gas outlet draws horizontal positioned smoke discharge tube road 4, and the lower part of the heat exchange of heat pipe 1 is inserted into smoke discharge tube road 4, The top one side of heat exchange of heat pipe 1 is equipped with air intake, is equipped with air outlet slit with air intake opposite side, air-introduced machine 2 is set At air inlet/outlet, air filter is arranged at air inlet/outlet.

It is below the utility model typical case but non-limiting example：

Embodiment 1：

A kind of air circulation heating for coal stove and purifier are present embodiments provided, as shown in Fig. 2, described Air circulation heats and purifier includes heat exchange of heat pipe 1, air-introduced machine 2 and air filter 3, the heat exchange of heat pipe 1 Inner-heating tube, the interior filling heat transfer substance of heat exchanger tube；Horizontal positioned flue gas discharge is drawn from the flue gas discharge opening of coal stove Pipeline 4, the lower part of the heat exchange of heat pipe 1 are inserted into smoke discharge tube road 4, and the top one side of heat exchange of heat pipe 1 is equipped with air Entrance is equipped with air outlet slit with air intake opposite side, and air-introduced machine 2 is arranged at air intake, and air filter 3 is set At air intake.

Wherein, heat transfer substance is water, built in air scavenging material in air filter 3, and the material for air purification is Activated carbon is at least 2 layers.

Embodiment 2：

A kind of air circulation heating for coal stove and purifier are present embodiments provided, as shown in figure 3, described Air circulation heats and the structure of purifier reference embodiment 1, difference lies in：Air-introduced machine 2 is arranged at air outlet slit, air Filter device is arranged at air outlet slit, and heat transfer substance is freon -21, and material for air purification is synthetic fibers.

Embodiment 3：

It present embodiments provides a kind of air circulation heating for coal stove and purifier, the air circulation adds Heat and the structure of purifier reference embodiment 2, difference lies in：Heat transfer substance is methanol.

Embodiment 4：

It present embodiments provides a kind of air circulation heating for coal stove and purifier, the air circulation adds Heat and the structure of purifier reference embodiment 2, difference lies in：Heat transfer substance is acetone.

Embodiment 5：

A kind of coal heating stove and its heating method are present embodiments provided, as shown in figure 4, the stove of the coal heating stove Body top side opens up flue gas discharge opening, and horizontal positioned smoke discharge tube road 4, the flue gas discharge are drawn from flue gas discharge opening Air circulation heating and purifier described in the setting embodiment 1 of pipeline 4, wherein air circulation heating and purifier are drawn Wind turbine 2 and air filter 3 may be disposed at the front of coal heating stove；

The first vertical clapboard at the top of furnace body is set in the furnace body of the coal heating stove, the first vertical clapboard will be in furnace body Portion is segmented into the chamber of two connections, and the first vertical clapboard one side is located at the chamber below flue gas discharge opening for flue gas burning-out zone, and first The perpendicular chamber every opposite side is pyrolytic gasification area, is coal-char combustion area below the flue gas burning-out zone and pyrolytic gasification area, described Coal-char combustion area inclined downward sets fire grate 5, and 5 lower section of fire grate sets primary air nozzle 6；Under the flue gas burning-out zone Side sets overfiren air port 7；The furnace wall of pyrolytic gasification area side is equipped with coal filling hole 8；The fire grate 5 is equipped with wind distributing hole.

The heating method of the coal heating stove is：

(a) fire coal is added in by coal filling hole 8 in coal-burning stove for heating stove, fire coal carries out pyrolysis gas into pyrolytic gasification area Change, generate tar, volatile matter and semicoke；

(b) tar, volatile matter and the semicoke that step (a) generates flow downward into coal-char combustion area, are passed through with primary air nozzle 6 The air contact that fire grate 5 introduces, makes tar, volatile matter, semicoke and air catalytic combustion；

(c) flue gas generated after step (b) volatile matter, semicoke and air catalytic combustion enters flue gas burning-out zone, with The air contact that overfiren air port 7 introduces carries out an after-flame, and the flue gas in afterburnt enters smoke discharge tube road from flue gas discharge opening The heat exchanger tube in heat exchange of heat pipe 1 in 4, with air circulation heating and purifier exchanges heat, the heat transfer object in heat exchanger tube Matter is formed steam by thermal evaporation, and steam connects to flowing at the top of heat exchanger tube at the top of heat exchanger tube with the air introduced by air-introduced machine 2 It touches and conducts heat, heat air, the steam condensation in heat exchanger tube returns to heat exchange bottom of the tube continuation and exchanges heat with heat smoke；Together When, air filter 3 is filtered air purification.

In the present embodiment, the thermal efficiency of the coal heating stove is about 81%.

Embodiment 6：

A kind of coal heating stove and its heating method are present embodiments provided, as shown in figure 5, the stove of the coal heating stove Body top side opens up flue gas discharge opening, and horizontal positioned smoke discharge tube road 4, the flue gas discharge are drawn from flue gas discharge opening Air circulation heating and purifier described in the setting embodiment 2 of pipeline 4, wherein air circulation heating and purifier are drawn Wind turbine 2 and air filter 3 may be disposed at the side of coal heating stove；

The structure of coal heating stove in the furnace interior structure reference embodiment 5 of the coal heating stove, difference lies in：Institute It states and burnout degree preheating channel 9 is set on the furnace wall of pyrolytic gasification area side, 9 lower part of burnout degree preheating channel sets burnout degree to enter Mouth 10, the top of the burnout degree preheating channel 9 set burnout degree to export 11；The furnace wall outsourcing water of the coal-burning stove for heating furnace body Set；The end of the fire grate 5 opens up wind distributing hole.

The step of heating method of the coal heating stove (a) and step (b) are in the same manner as in Example 3, and step (c) is： Step (b) volatile matter, semicoke contact progress with the flue gas generated after air catalytic combustion with the air that overfiren air port 7 introduces After-flame, it is uncombusted introduce and preheat with burnout degree entrance 10 after air contact and carry out secondary after-flame burning, secondary combustion Flue gas after to the greatest extent enters smoke discharge tube road 4 from flue gas discharge opening, with the heat pipe heat exchanging in air circulation heating and purifier Heat exchanger tube in device 1 exchanges heat, and the heat transfer substance in heat exchanger tube is formed steam by thermal evaporation, and steam is flowed to heat exchanger tube top It is dynamic, it contacts and conducts heat with the air introduced by air-introduced machine 2 at the top of heat exchanger tube, heating air, the steam in heat exchanger tube is cold The solidifying heat exchange bottom of the tube that returns continues to exchange heat with heat smoke；Meanwhile air filter 3 is filtered air purification.

In the present embodiment, the thermal efficiency of the coal heating stove is about 85%.

Embodiment 7：

A kind of coal-fired cooking and heating furnace and its cooking heating method are present embodiments provided, as shown in fig. 6, the fire coal is adopted The furnace body top side of radiator opens up flue gas discharge opening, and horizontal positioned smoke discharge tube road 4 is drawn from flue gas discharge opening, described Smoke discharge tube road 4 sets air circulation heating and the purifier described in embodiment 3, wherein air circulation heating and purification The air-introduced machine 2 and air filter 3 of device may be disposed at the front of coal heating stove；

Cooking mouth is equipped with flue gas discharge opening opposite side at the top of the furnace body of the coal heating stove, the furnace interior is cooked a meal The lower section of thing mouth sets the first diaphragm plate, and the one side of the first diaphragm plate connects with the furnace wall of furnace body cooking mouth one side, and opposite side is set Put cooking heating changeover module 12；Burner in cooking is opened up on first diaphragm plate, burner upper cover has movement in the cooking Cover board 13；The lower section of flue gas discharge opening sets the second diaphragm plate, one side and the furnace body chimney one of the second diaphragm plate in the furnace body The furnace wall of side connects, and the opposite side of the second diaphragm plate sets the first vertical clapboard perpendicular to the second diaphragm plate, and the first vertical clapboard is by stove Internal body portion is segmented into the chamber of two connections, and the chamber positioned at flue gas discharge opening one side is pyrolytic gasification area, positioned at cooking mouth one The chamber of side is flue gas burning-out zone；Coal-char combustion area inclined downward sets fire grate 5, and 5 lower section of fire grate sets one Secondary air port 6；Overfiren air port 7 is set below the flue gas burning-out zone；The furnace wall of pyrolytic gasification area side is equipped with coal filling hole 8； The fire grate 5 is equipped with wind distributing hole.

It is described fire coal cooking and heating furnace cooking heating method be：

(a) fire coal is added in by coal filling hole 8 in coal-burning stove for heating stove, fire coal carries out pyrolysis gas into pyrolytic gasification area Change, generate tar, volatile matter and semicoke；

(b) tar, volatile matter and the semicoke that step (a) generates flow downward into coal-char combustion area, are passed through with primary air nozzle 6 The air contact that fire grate 5 introduces, makes tar, volatile matter, semicoke and air catalytic combustion；

(c) flue gas generated after step (b) volatile matter, semicoke and air catalytic combustion enters flue gas burning-out zone, with The air contact that overfiren air port 7 introduces carries out an after-flame, and the flue gas in afterburnt carries out cooking heating operation；

When coal-fired cooking and heating furnace carries out cooking, movable cover plate 13 is adjusted, burner in cooking is made to be in opening, together When adjust cooking heating changeover module 12 it made to connect with the second diaphragm plate, barrier flue gas is directly entered in flue gas discharge opening, is fired Flue gas flow direction cooking mouth after to the greatest extent carries out cooking, and the flue gas after cooking flows into flue gas discharge opening and exchanges heat with heat exchange of heat pipe 1；

When coal-fired cooking and heating furnace carries out cooking, movable cover plate 13 is adjusted, burner in cooking is made to be in closure state, together When adjust cooking heating changeover module 12 it made to be disconnected with the second diaphragm plate, the flue gas in afterburnt is made to flow directly into flue gas row Outlet exchanges heat with heat exchange of heat pipe 1；

Enter smoke discharge tube road 4 from flue gas discharge opening, with the heat exchange of heat pipe 1 in air circulation heating and purifier In heat exchanger tube exchange heat, the heat transfer substance in heat exchanger tube is formed steam by thermal evaporation, and steam is flowed at the top of heat exchanger tube, The top of heat exchanger tube is contacted with the air introduced by air-introduced machine 2 conducts heat, heating air, and the steam condensation in heat exchanger tube returns Heat exchange bottom of the tube continuation exchanges heat with heat smoke；Meanwhile air filter 3 is filtered air purification.

In the present embodiment, the thermal efficiency of the coal heating stove is about 82%.

Embodiment 8：

A kind of coal-fired cooking and heating furnace and its cooking heating method are present embodiments provided, as shown in fig. 7, the fire coal is cooked a meal The structure of the structure reference embodiment 7 of thing heating stove, difference lies in：Set burnout degree pre- on the furnace wall of pyrolytic gasification area side The passage of heat 9,9 lower part of burnout degree preheating channel set burnout degree entrance 10, and the top of the burnout degree preheating channel 9 is set Put burnout degree outlet 11；The end of the fire grate 5 opens up wind distributing hole.

The step of cooking heating method (a) and step (b) are in the same manner as in Example 7, and step (c) is：Step (b) The volatile matter, semicoke are contacted with the flue gas generated after air catalytic combustion with the air that overfiren air port 7 introduces once to be fired To the greatest extent, it is uncombusted introduce and preheat with burnout degree entrance 10 after air contact the secondary after-flame burning of progress, the secondary afterburnt Flue gas carries out cooking heating operation；

When coal-fired cooking and heating furnace carries out cooking, movable cover plate 13 is adjusted, burner in cooking is made to be in opening, together When adjust cooking heating changeover module 12 it made to connect with the second diaphragm plate, barrier flue gas is directly entered in flue gas discharge opening, is fired Flue gas flow direction cooking mouth after to the greatest extent carries out cooking, and the flue gas after cooking flows into flue gas discharge opening and exchanges heat with heat exchange of heat pipe 1；

When coal-fired cooking and heating furnace carries out cooking, movable cover plate 13 is adjusted, burner in cooking is made to be in closure state, together When adjust cooking heating changeover module 12 it made to be disconnected with the second diaphragm plate, the flue gas in afterburnt is made to flow directly into flue gas row Outlet exchanges heat with heat exchange of heat pipe 1；

Enter smoke discharge tube road 4 from flue gas discharge opening, with the heat exchange of heat pipe 1 in air circulation heating and purifier In heat exchanger tube exchange heat, the heat transfer substance in heat exchanger tube is formed steam by thermal evaporation, and steam is flowed at the top of heat exchanger tube, The top of heat exchanger tube is contacted with the air introduced by air-introduced machine 2 conducts heat, heating air, and the steam condensation in heat exchanger tube returns Heat exchange bottom of the tube continuation exchanges heat with heat smoke；Meanwhile air filter 3 is filtered air purification.

In the present embodiment, the thermal efficiency of the coal heating stove is about 86%.

Comparative example 1：

This comparative example provides a kind of coal heating stove and its heating method, and the structure of the coal heating stove is with reference to implementation Structure in example 5, difference lies in：Flue gas discharge opening is not provided with air circulation heating and purifier, the flue gas of generation are directly arranged Go out.

Its heating method is with reference to embodiment 5.

In this comparative example, the thermal efficiency of the coal heating stove is about 71%.

Comparative example 2：

This comparative example provides a kind of coal-fired cooking and heating furnace and its cooking heating method, the fire coal cooking and heating furnace Structure in structure reference embodiment 7, difference lies in：Flue gas discharge opening is not provided with air circulation heating and purifier, generates Flue gas be expelled directly out.

Its heating method is with reference to embodiment 7.

In this comparative example, the thermal efficiency of the coal heating stove is about 73%.

Summary embodiment and comparative example can be seen that the utility model by being set in coal furnace exhanst gas outlet pipeline Air circulation heats and purifier, heat that can be effectively in recovered flue gas and while room air is purified, significantly Degree improves the flue gas heat utilization ratio of coal furnace, its flue gas heat utilization ratio is allow to reach more than 80%, it is only necessary to compared with Small heat can both heat air；Air circulation heating described in the utility model and purifier are easy to install and use, Comfort level of warming oneself is higher.

Applicant states that the utility model illustrates the detailed process equipment of the utility model and work by above-described embodiment Skill flow, but the utility model is not limited to above-mentioned detailed process equipment and technological process, that is, does not mean that the utility model Having to rely on above-mentioned detailed process equipment and technological process could implement.Person of ordinary skill in the field is it will be clearly understood that right Any improvement of the utility model, the adding of equivalence replacement and auxiliary element to each raw material of the utility model product, specific side Selection of formula etc. is all fallen within the scope of protection of the utility model and the open scope.

Claims (7)

1. a kind of air circulation heating and purifier for coal stove, which is characterized in that the air circulation heating and Purifier includes heat exchange of heat pipe (1), air-introduced machine (2) and air filter (3), is replaced in the heat exchange of heat pipe (1) Heat pipe, the interior filling heat transfer substance of heat exchanger tube；Horizontal positioned smoke discharge tube road is drawn from the flue gas discharge opening of coal stove (4), in lower part insertion smoke discharge tube road (4) of the heat exchange of heat pipe (1), the top one side of heat exchange of heat pipe (1) is equipped with Air intake is equipped with air outlet slit with air intake opposite side, and air-introduced machine (2) is arranged at air inlet/outlet, Air filter is arranged at air inlet/outlet；Built in air scavenging material in the air filter (3).

2. air circulation according to claim 1 heating and purifier, which is characterized in that the heat transfer substance is water, Any one in freon -21, Freon-11, freon -113, ammonium hydroxide, methanol, ethyl alcohol or acetone or at least two group It closes.

3. air circulation according to claim 1 heating and purifier, which is characterized in that the material for air purification is Any one in activated carbon, synthetic fibers or HEPA；The material for air purification is at least two layers.

4. a kind of coal furnace, which is characterized in that the furnace body top side of the coal furnace opens up flue gas discharge opening, is discharged from flue gas Mouth draws horizontal positioned smoke discharge tube road (4), and the smoke discharge tube road (4) is set described in claim any one of 1-3 Air circulation heating and purifier；Set the first vertical clapboard at the top of furnace body in the furnace body of the coal furnace, first Furnace interior is segmented into the chamber of two connections by vertical clapboard, and the chamber that the first vertical clapboard one side is located at below flue gas discharge opening is cigarette Gas burning-out zone, the first perpendicular chamber every opposite side are pyrolytic gasification area, are half below the flue gas burning-out zone and pyrolytic gasification area Burnt combustion zone, coal-char combustion area inclined downward set fire grate (5), primary air nozzle are set below the fire grate (5) (6)；Overfiren air port (7) is set below the flue gas burning-out zone；The furnace wall of pyrolytic gasification area side is equipped with coal filling hole (8).

5. coal furnace according to claim 4, which is characterized in that burnout degree is set on the furnace wall of pyrolytic gasification area side Preheating channel (9), burnout degree preheating channel (9) lower part set burnout degree entrance (10), the burnout degree preheating channel (9) Top set burnout degree export (11)；The furnace wall outsourcing water jacket of the fire coal furnace body；The fire grate (5) is equipped with cloth wind Hole；The end of the fire grate (5) opens up wind distributing hole.

6. a kind of coal furnace, which is characterized in that the furnace body top side of the coal furnace opens up flue gas discharge opening, is discharged from flue gas Mouth draws horizontal positioned smoke discharge tube road (4), and the smoke discharge tube road (4) is set described in claim any one of 1-3 Air circulation heating and purifier；

Cooking mouth is equipped at the top of the furnace body of the coal furnace with flue gas discharge opening opposite side, under the furnace interior cooking mouth Side sets the first diaphragm plate, and the one side of the first diaphragm plate connects with the furnace wall of furnace body cooking mouth one side, and opposite side sets cooking to adopt Warm changeover module (12)；Burner in cooking is opened up on first diaphragm plate, burner upper cover has movable cover plate in the cooking (13)；The lower section of flue gas discharge opening sets the second diaphragm plate, one side and the furnace body chimney one side of the second diaphragm plate in the furnace body Furnace wall connect, the opposite side of the second diaphragm plate sets the first vertical clapboard perpendicular to the second diaphragm plate, and the first vertical clapboard is by furnace body Inside division is the chamber of two connections, and the chamber positioned at flue gas discharge opening one side is pyrolytic gasification area, positioned at cooking mouth one side Chamber be flue gas burning-out zone；Coal-char combustion area inclined downward sets fire grate (5), is set once below the fire grate (5) Air port (6)；Overfiren air port (7) is set below the flue gas burning-out zone；The furnace wall of pyrolytic gasification area side is equipped with coal filling hole (8)。

7. coal furnace according to claim 6, which is characterized in that burnout degree is set on the furnace wall of pyrolytic gasification area side Preheating channel (9), burnout degree preheating channel (9) lower part set burnout degree entrance (10), the burnout degree preheating channel (9) Top set burnout degree export (11)；The fire grate (5) is equipped with wind distributing hole；The end of the fire grate (5) opens up cloth Air holes.