CN101886813A

CN101886813A - Wood stove radon reduction system

Info

Publication number: CN101886813A
Application number: CN2010101785114A
Authority: CN
Inventors: 乔治·基尔默
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-05-13
Filing date: 2010-05-12
Publication date: 2010-11-17

Abstract

A combination of a wood stove and radon collecting system. A radon collection tube located in the basement of a building is connected via conduit leading into the combustion chamber of the stove. Burning wood within the combustion chamber is operable to normally cause radon within the building to flow into the radon collection tube, through the combustion chamber and then out through an exhaust tube. In the absence of burning wood, a lighted candle is placed in the combustion chamber tube to cause the radon within the radon collection tube to flow into the combustion chamber and then out through the exhaust tube.

Description

Wood stove radon reduction system

The cross reference of related application

The application is that the sequence number of submitting on June 9th, 2006 is the part continuation application of 11/423180 application, and it is incorporated herein by reference.

Technical field

The present invention relates generally to firewood stove field.

Background technology

In some zones, rural, radon is collected at the basement of building.Usually, be connected in from the hair-dryer of the outward extending collecting pipe of building and operationally force radon gas to leave building.Collecting pipe can extend in the basement or extend to below the basement or extend in the building slab.The production cost but also the needs that need hair-dryer not only to increase system are safeguarded and electric power.Needed is such radon gathering system: it will utilize the heat in the heating system to leave building to force radon.And, for example need system and combustion wood stove or candle combustion (at warm weather owing to analogues such as power failure cause) are combined.A kind of combination and the system of coming to this disclosed herein.

The United States Patent (USP) 4877182 of authorizing people such as Pugh discloses a kind of typical groove crack ventilating system, is used for eliminating radon gas from building.The United States Patent (USP) 4905579 of authorizing Dame discloses a plurality of hair-dryers with control valve, thereby the pressure control radon that is used for controlling in the building flows into building.The United States Patent (USP) 3175552 of authorizing Sutton discloses the combustion bavin fireplace with blower motor, is used for forcing air to pass to extend through by the burning firewood heating outlet in room.Leave the chimney of incinerator in order to quicken air-flow, the United States Patent (USP) 3134345 of authorizing King discloses a kind of hair-dryer, is used for quickening the chimney that air communication is crossed incinerator.In the United States Patent (USP) 4262608 of authorizing Jackson, the air of preheating is injected in the stove combustion chamber

The combination of a plurality of heating systems and radon gathering system be efforts be made so that radon gas content minimum in the building by merging.For example, the United States Patent (USP) 5191874 of authorizing McWilliams discloses a kind of hair-dryer, is used for collecting radon gas and then gas being guided to the gas vent of stove from interior of building.The United States Patent (USP) 4244686 of authorizing Scott discloses a kind of by provide the multiple gas that comprises radon gas that the method for the operation economy of stove is provided to heating clamber.And the United States Patent (USP) 4920866 of authorizing Hoban discloses a kind of firewood stove and the combination that is used for collecting the pipe of radon gas in building, and radon gas is injected in the outlet of stove.

The firewood stove comprises door, and door can be opened pivotally so that firewood is put into the combustion chamber.By using such stove, the inventor has combined the radon collecting pipe, and the radon collecting pipe can be inserted into by door easily, so that radon gas is directly introduced in the combustion chamber.Like this, by the setting of radon collecting pipe being passed the door of opening, the radon gathering system can be connected in stove easily or separate with stove, and other firewood can be put into the combustion chamber simultaneously.

At mild climate, do not need the inner air of heating building because ambient air outside is enough warm, therefore firing wood stove is not at all be used for if having time heating building.In these cases, the combustion wood stove is not at all have in the combustion chamber if having time firewood combustion, and the air in the opposite combustion chamber is cool.In this case, stove is not discharged radon from building.Therefore the inventor has designed a kind of method and heating system, when it does not fire bavin or similar material in the combustion chamber, utilizes the candle of lighting in the combustion chamber.Candle has heat gas in the combustion chamber of enough heats, imports in the combustion chamber thereby aspirate radon gas cooler in the radon collecting pipe thus; And candle can not produce enough heat heating buildings.Therefore, be put under the situation about not heating in the stove when burning firewood and heating building and by the candle with burning, system is all operationally removed radon from building.

Summary of the invention

One embodiment of the present of invention are stoves, are used for being in first state of heating building and reducing radon gas in the building during second state that do not heat at stove.The main body of stove has the combustion chamber and imports the opening of combustion chamber.The primary importance that door is installed to the main body of stove and can be never covered opening moves to extends the second place of crossing opening.The radon collecting pipe is installed in the main body of stove and has near-end and opening the far-end to building in of opening in the combustion chamber.The firewood that burns during first state of the gas in stove is in heating building and combustion chamber is set in the combustion chamber, so that radon gas is sucked in the combustion chamber from pipe.When stove is in second state of heating building not, thereby the candle of burning is set in the combustion chamber and with the indoor gas of heating flame radon gas is sucked in the combustion chamber from pipe.

The objective of the invention is the firewood stove is combined with the radon gathering system.

Another object of the present invention is a kind of new and improved firewood stove.

Another additional purpose of the present invention provides a kind of radon gathering system, and it can easily be suitable for traditional firewood stove.

A further object of the present invention provides a kind of heating system, and when system was in heating mode and the non-heating mode, it was operationally extracted radon out from building.

Description of drawings

Fig. 1 is the part schematic diagram in conjunction with stove of the present invention and radon gathering system that is installed in the building.

Fig. 2 is the amplification front view of the stove of Fig. 1, and the fire door that illustrates is shown in an open position.

The side view that Fig. 3 sees along the direction of the arrow 3-3 of Fig. 2, the radon collecting pipe removes from stove.

Fig. 4 is the view identical with Fig. 3, fire door just is shown partly closes, and the radon collecting pipe is installed between door and the stove.

Fig. 5 observes for the part vertical view of the amplification seen along the direction of the arrow 5-5 of Fig. 4 and along the direction of arrow.

Fig. 6 is for being installed in the part zoomed-in view of the radon collecting pipe 21 on the stove with storing state.

Fig. 7 is the view identical with Fig. 2, just is illustrated in a pile firewood on the inherent fire in combustion chamber.

Fig. 8 is the view identical with Fig. 2, just is illustrated in the candle of lighting in the combustion chamber.

Fig. 9 is the vertical view of the stove of Fig. 2, shows cooking top.

The specific embodiment

In order to promote understanding, referring now to embodiment shown in the figure and use this embodiment of specific language description to principle of the present invention.But will be interpreted as any restriction that therefore is not intended to scope of the present invention, in the arrangement illustrated some transformed and further revised, and some further application of principle of the present invention is understood that for those skilled in the art related to the present invention it can is normally to expect as described in the present invention.

More specifically referring to Fig. 1, partly show building 10 now, it has roof 11, inner room 12 and basement 13.Firewood stove 16 is arranged in the room 12, and has traditional output flue 17 of extending through roof 11 so that overflow building from the waste gas of stove.Be provided with radon gathering system 18, to collect radon gas by antipriming pipe 19 from basement, antipriming pipe 19 is connected with pipe 21 by pipe 20 in turn, and pipe 21 extends so that radon gas enters the combustion chamber of stove between the main body 23 of fire door 30 and stove 16.Second pipe 24 extends through roof 11, thereby to be configured to allow gas to flow through pipe 24 and allow to discharge buildings by the gases that pipe 19 is collected during barrier gas inflow pipe 20 from managing 19 at valve 25.Equally, valve 25 has barrier gas and flows through pipe 24 and allow gas to flow through the second place that pipe 20 arrives pipe 21 from managing 19 from managing 19.Optionally input pipe 26 extends through the wall arrival external environment condition in house, has fan 27, and it is provided for extraneous air is blown in the basement 13, thereby forces radon to leave building the basement pressurization thus.

Firewood stove 16 has the main body 23 that is arranged on base 28 (Fig. 2) top, and base 28 separates the main body of stove on the floor.Combustion chamber 29 is formed on the inside of main body 23, has the exhaust outlet 17 by its extension.Door 30 is pivotally mounted to the front 33 of stove by traditional hinge 31 and 32.Door can be pivoted to the complete closed position that covers the opening 34 that imports combustion chamber 29 by centre position (Fig. 4) from open position (Fig. 2).Handle 35 is arranged on door 30 the outer surface so that the opening and closing of door.

Wall 36 (Fig. 2 and Fig. 3) around opening 34 extend and from furnace main body 23 forward towards surface 37 outwards outstanding.Wall 36 has extension respectively and crosses the bottom of opening 34 and the bottom 38 and the top 39 at top.And a counter-lateral quadrents 40 and 41 (Fig. 2) extend vertically along the opposite side of opening 34.Bottom 38 forms the protuberance 41 (Fig. 3) that extends around opening by sidepiece 41.Sidepiece 40 comprises that the recess 43 that is formed on wherein is connected to the pipe 21 of radon gathering system with reception.

Pipe 21 can be taken off from recess 43 to allow door 30 to extend hermetically crosses opening 34, enters the combustion chamber except allowing air to flow through recess 43.When pipe 21 when not being installed in recess 43 in, it is stored in the interior vertical position of retainer 45, and retainer 45 is installed in the front surface 37 of furnace main body.Retainer 45 comprises the semi-circular indentation 46 (Fig. 6) that forms a pair of stretch out

arm

47 and 48, and pipe 46 can be positioned at and describedly a pair ofly stretch out between arm 47 and 48.Magnet 49 is installed on the front surface 37 of stove and is arranged to metal tube 21 magnetically is held in place.Alternatively, magnet can be installed in pipe 21 pipe is fixed in retainer 45.Under these circumstances, magnet 49 is optional.

For positioning pipe 21 to extend into combustion chamber openings, catch pipe 21 and draw back from retainer 45.Managing 21 end then is inserted into by recess 43 and enters opening 34 and enter the combustion chamber to allow the gas in the pipe.The magnet 50 that is fit to is arranged on by next-door neighbour's recesses 43 on the front surface 37 of furnace main body and remains in the recess 43 magnetically and removably will manage 21.

Its edge or end from wall 36 was outwards outstanding when the external dimensions of pipe 21 made in being installed in recess 43.For example, if use cylindrical tube, the radius of recess 43 approximately is half of diameter of pipe 21 so, and the residue of pipe is provided thus, and half is outwards outstanding from wall 36.In this case, fire door 30 will be prevented from closing with the position of sealing fully with respect to combustion chamber openings 34, thus be formed on the edge 52 (Fig. 5) of wall 36 and door 30 inwardly towards the surface between space 51.For the air stream in restricted passage space 51, a plurality of aluminium flakes are mounted removably to extend the side of crossing space 51 and door 30 from wall 36.For example, a plurality of aluminium flakes 53 (Fig. 5) are formed in outside surrounding wall 36 and install, and are secured in place by magnet 54, so that aluminium flake is connected in stove.Then when door is moved to centre position (at open position shown in Figure 3 with when between the complete closed position of pipe 21 when recess 43 is pulled down), aluminium flake extends that to cross space 51 mobile to limit by the air in space.Use other magnet aluminum strip 53 is fixed in the side 61 of door.That is, can use magnet 54 bar 53 directly be fixed to stove or directly be fixed to door.Equally, can use magnet 54 so that bonding jumper 53 is fixed to Lu Hemen, purpose is to extend on opening 34 but because the existence of pipe 21 and partly and keep apart between furnace main body when forming space 51, space 51 is crossed in bonding jumper location and maintenance in the recess 43 when door.Bar 53 can part 38-40 outwards towards the surface on extend to reduce flowing of air by space 51 thus.

Be arranged to allow gas when valve 25 and flow to pipe 20 and do not flow under the situation of pipe 24 from managing 18, when pipe 21 was installed to recess 43, any radons in the basement 13 all were allowed to flow into antipriming pipe 19, flow to the combustion chamber of stove then.Thereby force extraneous air to flow into basement by managing 26 by opening fan 27, basement can be eliminated radon gas.Pipe 21 forms air nozzle, and air nozzle is collected the air of the radon gas that comprises that basement is interior and is introduced into the combustion chamber by opening 34.

Burning in the stove makes the gas heat interior than pipe 21,20 and 19 of the gas the combustion chamber in, thus air and radon is drunk up and finally leave flue 17 by managing 19 from basement.Closed with respect to pipe 20 and after opening with respect to pipe 24, nozzle 21 is removed from recess 43 at valve 25, can not flow to stove 16 thereby air-flow is interrupted radon.Cross recess 43 without any need for the lid extension.Valve 25 is in prevention inflow pipe 20 and allows from managing 18 to the mobile position of the air of pipe 24.

Can envision many variants and be included in the present invention.Example is good, and figure has described the building with basement, and still, the radon gathering system also can be used for not having the building of basement.In this case, the radon collecting pipe can be set at support of buildings plate below.

For first state that is in heating building at stove with do not reduce radon in the building during second state of heating building continuously, a kind of system disclosed herein, it utilizes at combustion chamber internal combustion firewood with the gas in heating building and the combustion chamber, and only in the combustion chamber, place the candle lighted with the indoor gas of heating flame heating building not.Fig. 6,7 and 8 discloses at identical stove shown in Figure 2, and the firewood 70 that burns in Fig. 7 is depicted in the combustion chamber, and the candle of lighting in Fig. 8 71 is arranged in the combustion chamber.Therefore, firewood stove 16 has the main body 23 that is arranged on the base top, with the main body of stove at interval on the floor.Combustion chamber 29 is formed in the main body 23 and has by its blast pipe of drawing 17.Door 30 is installed on the front 33 of stove pivotally by traditional hinge 31 and 32.Door can (Fig. 4) be pivoted to the complete closed position that covers the opening 34 that imports combustion chamber 29 to the centre position from open position (Fig. 2).Radon collecting pipe 21 as this paper detailed earlier herein be installed in stove and have as described in Figure 1 opening to the combustion chamber near-end in 29 and opening to the interior far-end of building.Radon collecting pipe 21 utilizes valve 25 to be connected to the antipriming pipe 19 of the basement that is positioned at building, and the valve 25 operationally gas flow in the control valve 19 or flow to blast pipe 24 and is discharged to atmosphere to radon collecting pipe 21.

When stove was in first state of heating building and the gas that is positioned at the combustion chamber, the firewood 70 (Fig. 7) of a pile burning was positioned at combustion chamber 29, compared the temperature that has improved gases in the combustion chamber 29 with the lower temperature gas in the radon collecting pipe 21 thus.Be discharged from by blast pipe 17 in the radon gas flow into combustor 29 in the temperature official post pipe 21 that forms and finally from guiding building outside, combustion chamber.

In Fig. 8, the firewood of burning is replaced by the candle of lighting, be resisted against on the radon collecting pipe 21 and candle does not have enough sizes when producing the heat of heating building when door 30 is closed, the candle of lighting only produces the heat of the gas in the combustion chamber 29 that is enough to raise.For example, extend in the opening 34, when door 30 is resisted against on the radon collecting pipe, highly be that four to five inches, diameter are three inches the common candle gas that heating flame chamber 29 is interior when radon collecting pipe 21 as shown in Figure 4.On the other hand, for example 1000 square feet or bigger common house can not raise owing to single candle combustion in the combustion chamber (comparing with the firewood of the burning that is provided with in the combustion chamber) make the temperature of air in the building.On the other hand, the candle of burning be enough to the to raise temperature of burning indoor gas will manage in 21 relatively the radon gas of cold thus and is drawn onto and discharge exhaust outlet 17 in the combustion chamber then.

Radon collecting pipe 21 extends from basement as single pipe or a plurality of pipe, as shown in Figure 1.And the fresh air tube 26 that imports basement from the outside of building has the fresh air that forces the outside enters basement by pipe fan 27 (Fig. 1).As a result, when the air with radon by blast pipe 17 when building is discharged from, extraneous air flows into buildings by pipe 26, thereby finally replaces all radon gas in the building with fresh air.

Radon collecting pipe 21 is remained in the recess 43 removably by magnet 50, arrives in the opening 34 of oriented combustion chamber with opening.In this position, door 30 can extend and crosses opening 34.In the time of in being installed in recess 43, the radon collecting pipe extends to the outside of wall 36.As a result, when opening was crossed in the door extension, door 30 contact radon collecting pipes 21 were with the space 51 between the edge 52 (Fig. 5) that forms door 30 and wall 36.The aluminium flake 53 (Fig. 5) that is installed on wall 36 and door 30 flows around the air of combustion chamber openings with the space between restricted passage door and the wall 36.

A series of measurements have reflected that the candle that will light is placed into the advantage in the stove combustion chamber.For example, in stove under the situation of firewood combustion and fan 27, the radon on the higher ground floor of building is measured as every liter 5.0 micromicrocurie (pCi/L) as shown in the figure, and the radon in lower basement is 5.4pCi/L simultaneously.When stove did not burn firewood, the candle of lighting can be placed in the combustion chamber.Measure in this case, that is: stove does not have the firewood of burning and has the candle of lighting therein.In this case, the electric power of building is because snowstorm is closed, and fan 27 is closed thus, and the candle of lighting is in the combustion chamber, and detected radon raises to 18.4pCi/L gradually to 16.7pCi/L from 4.9pCi/L to 9.0pCi/L in the combustion chamber.When power recovery started and moves fan 27 thus, the radon that records at first in the combustion chamber was 20.6pCi/L, and the radon that records in basement is 16.2pCi/L.Through after a while, be in the combustion chamber at candle under the situation of the state of lighting and fan 27 operations, radon in the combustion chamber raises to 21.8pCi/L from 20.6pCi/L to 21.7pCi/L, and the radon that records in basement simultaneously reduces to 12.6pCi/L from 16.2pCi/L to 14.2pCi/L.Fan 27 in operation is brought ozone under the situation of basement, because the heat that provides in the combustion chamber by candle operationally drinks up and suck the combustion chamber with radon from basement, so the radon in the basement reduces.Therefore, when the radon in the combustion chamber rose by the stove chimney, reduction also finally was stabilized in 3.7pCi/L to the radon in the combustion chamber to 14.7pCi/L to 6.8pCi/L from 21.8pCi/L to 21.3pCi/L.In same period, reduction also finally is stabilized in 4.6pCi/L to the radon in the basement to 8.1pCi/L to 4.5pCi/L from 12.6pCi/L to 11.2pCi/L.In other words, have wherein that radon level in the combustion chamber of the candle of lighting raises and the radon of basement reduces, thus up to through after a while since in basement still less radon can obtain that the indoor radon of final combustion begins to reduce in the combustion chamber to be withdrawn into.

The method that reduces radon in building may further comprise the steps: the stove that the combustion chamber with the firewood that is used to burn at first is provided, the combustion chamber has on the opening of combustion chamber from primary importance to second place door movably, do not cover opening at the primary importance door, extend at second place door and cross opening.Radon collecting pipe opening is in the combustion chamber, and its end opposite opening is in building.Blast pipe from the outside of combustion chamber guiding building to discharge the gas in the combustion chamber.Door is moved to open position, and the firewood that is positioned at the combustion chamber is lighted the gas with heating building and combustion chamber, thus radon gas is also finally discharged by blast pipe in radon collecting pipe inspiration combustion chamber.Just after firewood was lighted, door was moved to the position that combustion chamber openings is crossed in an extension.The final firewood that allows is in non-heated condition then with the stove cooling.Door is opened then, candle is put in the combustion chamber, if the combustion chamber be cooling and do not have a combustible firewood.Then candle is lighted with the indoor gas of heating flame, thereby to produce enough heats in the combustion chamber radon gas is sucked in the combustion chamber from pipe.Then door is moved to and extends the position of crossing opening.

In an experiment, candle has three inches diameter and about four to five inches height, in the combustion chamber, produced enough heats so that the cool relatively radon gas in the radon collecting pipe flows in the combustion chamber, and the heat that is produced by candle simultaneously is enough little so that can heating building and the temperature of the building that raises.Fresh air is forced to and enters in the building to replace flowing in the combustion chamber and the gas of then discharging by blast pipe from the radon collecting pipe.Can force air to enter in the building by using fan 27.

Stove 16 (Fig. 2) comprises the top 80 with cooking top 81, and cooking top 81 covers the big opening of the oriented combustion chamber in the furnace roof portion 80.Cooking top 81 is pivotally mounted to furnace roof portion 80 by the conventional fasteners 85 of installing in turn.Cooking top 81 can be raised and be pivoted to dotted line position 84 on the top of furnace roof portion 80.Cooking top can be made by cast iron.Movably coiling 82 and 83 is installed in cooking top 81 and covers the opening that extends through cooking top 81.Dish 82 and 83 can by along upward to mentioning coming determining whether candle is lighted in 81 minutes with cooking top, and also allow when candle combustion, to observe the situation of candle.Though can put into candle by the opening that is usually covered by one of dish, common candle is placed in the stove to light the Qianmen of state by stove.Dish 82 and 83 can be installed in cooking top 81 by multiple traditional approach, for example provides lug in each opening, can be resisted against on the lug when

dish

82 and 83 is placed into opening.

Though in accompanying drawing and aforementioned description, at length illustrate and described the present invention; but in that it is considered to exemplary rather than determinate in nature; be understandable that only to illustrate and described preferred embodiment, and all changes in purport of the present invention all require to be protected with revising.

Claims

1. stove is used for being in first state of heating building and reducing radon gas in the building during second state that do not heat at stove, comprises

Furnace main body is set in the building, and has the opening of combustion chamber and the described combustion chamber of importing;

Door, the primary importance of being installed to described furnace main body and can never covering described opening move to and extend the second place of crossing described opening;

The radon collecting pipe, be installed to described furnace main body and have opening in the described combustion chamber near-end and opening to the interior far-end of building;

Be set in the described combustion chamber when firewood of burning, first state of the gas in stove is in heating building and described combustion chamber, so that radon gas is sucked in the described combustion chamber from described pipe; And

The candle of burning is set in the described combustion chamber when stove is in second state of heating building not, thereby with the gas that heats in the described combustion chamber radon gas is sucked in the described combustion chamber from described pipe.

2. the stove of claim 1, wherein, building has basement and wherein:

Described radon collecting pipe extends from basement; And further comprise:

Fan;

The radon discharge pipe extends to the outside of building from furnace main body; And

Fresh air tube, import in the described basement from the outside of building, described fan forces the fresh air of outside to enter basement by described fresh air tube, thereby extraneous air is provided in the building, and replenishes the air that contains radon of discharging from building by described radon discharge pipe.

3. the stove of claim 2, wherein:

Extend when crossing the described second place of described opening when described door is in, described radon collecting pipe extends in the described opening between described door and described furnace main body.

4. the stove of claim 3, wherein:

When described door was in the second place, described door separated to form the space of the described opening of guiding at interval with described furnace main body; And further comprise:

Bonding jumper, it is installed in described furnace main body and extends with the air in the described space of restricted passage mobile when described door is in the described second place on described space at described opening.

5. stove is used for when the heated condition of the firewood that has burning therein and reduces radon gas when having the not heated condition of candle of burning therein, comprises

Furnace main body forms the combustion chamber with opening;

Fire door, contiguous described opening is installed in described furnace main body and can moves from the second place that primary importance is crossed described opening to extension, thereby leaves described opening firewood or candle can be placed in the described combustion chamber by described opening at the described door of described primary importance;

Air nozzle is installed to described furnace main body at described opening, and described air nozzle has open proximal and the far-end that extends in the described combustion chamber;

First pipe, be connected to the described far-end of described air nozzle and leave to collect radon gas by its extension, described first pipe has by near-end and opening the far-end to described building in of described air nozzle opening in the described combustion chamber, gas in the wherein said combustion chamber is than the gas warm in described first pipe, not during heating building, radon gas is sucked in the described combustion chamber from described first pipe during with the gas in heating building and the described combustion chamber and with the firewood that has therein burning in the combustion chamber when the candle that only burns is set at wherein only to heat the gas in the described combustion chamber.

6. the stove of claim 5, and further comprise:

Second pipe from the described first pipe extension; And

With described first pipe and the relevant controlled valve of described second pipe, be used for guiding gas flow to pass through described first pipe and described second pipe.

7. stove is used for when the heated condition of the firewood that has burning therein and reduces radon gas in the building when having the not heated condition of the candle of lighting therein, comprising:

Furnace main body is used for heating building and has combustion chamber and the opening that imports in the described combustion chamber;

Door, the primary importance that is installed in described main body and can never covers described opening move on to and extend the second place of crossing described opening;

The radon collecting pipe, be installed on described stove removably and had at described opening at the near-end and the far-end of opening in the described building of described opening part opening in the described combustion chamber, the size configurations one-tenth of described pipe is arranged on the described second place with described door, the described door of the described second place extending on the described opening but and described furnace main body keep apart to form the space betwixt between partly, and wherein said door and described stove form recess, and described pipe extends in the described recess;

Be set in the described combustion chamber when firewood of burning, first state of the gas in stove is in heating building and described combustion chamber, so that radon gas is sucked in the described combustion chamber from described pipe;

The candle of burning is set in the described combustion chamber when stove is in heating building not but heats second state of the gas in the described combustion chamber, so that radon gas is sucked in the described combustion chamber from described pipe; And

Magnet is used for described pipe is remained on described opening removably.

8. the method for the radon in the minimizing building may further comprise the steps:

Stove is provided, stove and accessory is useful on the combustion chamber of burning firewood, the combustion chamber has the opening that imports in the described combustion chamber, the primary importance that the described door of Men Kecong does not cover described opening moves to extends the second place of crossing described opening, the radon collecting pipe, have opening and in described combustion chamber, near-end and opening are arranged to the interior far-end of described building, and blast pipe, the outside of leading described building from described combustion chamber is to be discharged into the gas in the described combustion chamber outside of described building;

Described door is moved on to described primary importance;

Firewood is put into described combustion chamber by described opening;

Light the described firewood that is positioned at described combustion chamber gas, so that radon gas is drawn onto in the described combustion chamber from described radon collecting pipe with heating building and described combustion chamber;

Described door is moved on to the described second place;

Make all firewoods in the described combustion chamber be cooled to non-heated condition;

Described door is moved on to described primary importance;

When the cooling of described combustion chamber has firewood, candle is not put in the described combustion chamber by described opening;

Light described candle in the described combustion chamber to heat the gas in the described combustion chamber, so that radon gas is sucked in the described combustion chamber from described pipe; And

Described door is moved on to the described second place.

9. method as claimed in claim 8 also comprises additional step:

When described firewood burns in described combustion chamber or described candle when being lighted, the gas that will comprise radon by blast pipe is discharged into the outside of described building in the described combustion chamber.

10. method as claimed in claim 9 also comprises additional step:

Force air to enter the gas of described building to replace discharging from described building by described blast pipe from the outside of described building.

11. as the method for claim 10, wherein

The described step that forces comprises substep: start fan and enter described building to force described building air outside.