JP2018021738A - Heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heater capable of reducing an equipment cost and also retaining high-temperature fire power necessary for heating for a long period, and excellent in durability and safety.SOLUTION: A heater includes a combustion chamber configured to combust wood fuel in a glowing ember state. This invention employs a heater characterized in that at least inner wall of a body comprises porous stone material whose porosity is 20-43%, heatproof temperature is not less than 700°C, and heat conductivity is within a range of 0.65-0.75 kcal/mh°C. In particularly, since the body comprises the porous stone material whose thicknesses of a side wall and/or top wall are within a range of 60-150 mm, the heater can exhibit excellent heating efficiency in consideration of safety.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a heating apparatus, and more particularly to a heating apparatus that uses heat generated when wood fuel is burned in a bonfire state as a heat source.

  Conventionally, heating devices such as stoves using electricity, oil, and gas, and air conditioners using electricity and gas have been widely distributed. However, since these heating devices have a high running cost, they impose pressure on households in many households. Therefore, at present, the value of a heating apparatus using a wood fuel (such as firewood) whose fuel is relatively inexpensive is reviewed as a heating apparatus. A heating device using wood fuel can be used even if the lifeline of electricity, gas, etc. is cut off during an earthquake disaster. In addition, since the heating device using wood fuel uses radiant heat (far infrared), the entire space to be heated is more than the air conditioner or oil (gas) fan heater that heats the heated air by convection in the space to be heated. Can be effectively heated with less energy. Furthermore, the heating device using wood fuel does not cause the air in the space to be heated to dry and does not impair the comfort, unlike an air conditioner or a fan heater using electricity.

  As a heating apparatus using wood fuel, a wood stove, a fireplace, etc. can be mentioned. In particular, wood-burning stoves have been attracting attention recently because they are excellent in heating efficiency and fuel efficiency, and are small in size, so that they can suppress an increase in equipment costs regardless of the installation location like a fireplace. However, a relatively small heating device such as a wood-burning stove cannot accommodate a large amount of wood fuel at a time, and it is difficult to use it continuously for a long time without refueling. It was. It is desirable for the heating device to be capable of sustaining the high-temperature thermal power necessary for heating for about 8 hours, which is a general sleep time, without refueling.

  For the above-mentioned problem, for example, a wood stove disclosed in Patent Document 1 is known. The soot stove disclosed in Patent Document 1 is directed to the combustion chamber so that the fire in the combustion chamber is burnt or burned from a fire to a state where flames are burned out, so that the well-maintained state is maintained well. It is equipped with an intake air automatic control device that automatically manages intake air of combustion air. As a result, the wood stove of Patent Document 1 can maintain a high-temperature thermal power necessary for heating for a long time. Specifically, the soot stove disclosed in Patent Document 1 can maintain combustion for a long time of about 15 hours when 100 kg of soot is introduced into the combustion chamber.

JP 2014-234991 A

  However, since the wood stove disclosed in Patent Document 1 maintains the combustion chamber at a temperature of about 400 ° C. to 600 ° C. using an automatic intake air control device, tin, methane, etc. contained in the combustion gas in the combustion chamber The unburned components of can not be discharged to the outside in a completely burned out state. Therefore, the wood stove disclosed in Patent Document 1 is not suitable for use in an urban area from the viewpoint of safety. In addition, the wood stove disclosed in Patent Document 1 has an essential configuration of an automatic intake air control device having a complicated mechanism, and the increase in this configuration leads to an increase in equipment cost.

  The present invention has been made in view of the above-described circumstances, and is capable of maintaining a high-temperature thermal power necessary for heating for a long time while reducing the equipment cost, and is excellent in durability and safety. It is an issue to provide.

  The inventor of the present invention has achieved the above-mentioned problem by adopting the heating device described below.

  The heating device according to the present invention is a heating device in which a combustion chamber for burning wood fuel in an open fire state is formed inside the main body, and at least an inner wall of the main body has a porosity of 20 to 43% and a heat resistant temperature of 700. It is characterized by comprising a porous stone material having a thermal conductivity of 0.65 to 0.75 kcal / mh ° C. or higher.

  In the heating device according to the present invention, it is preferable that at least an inner wall of the main body is made of the porous stone material having a side wall and / or a top wall having a thickness of 60 mm to 150 mm.

  In the heating device according to the present invention, the porous stone material is preferably Oya stone.

  It is preferable that the heating apparatus according to the present invention further includes a secondary combustion chamber that burns unburned components contained in the combustion gas in the combustion chamber.

  The heating device according to the present invention preferably includes a gas flow rate adjusting means for adjusting the amount of combustion gas flowing into the secondary combustion chamber.

  In the heating device according to the present invention, the main body includes, in order from the bottom, the combustion chamber, a heat storage region in which heat generated in the combustion chamber is retained, and the secondary combustion chamber are communicated with each other, and the heat storage region It is preferable to provide a fuel input door at a position corresponding to.

  In the heating device according to the present invention, it is preferable that the fuel input door is provided with an outside air flow rate adjusting means for adjusting the amount of outside air introduced into the combustion chamber.

  In the heating device according to the present invention, at least the inner wall of the main body is composed of a porous stone material having a porosity of 20 to 43%, a heat resistant temperature of 700 ° C or higher, and a thermal conductivity of 0.65 to 0.75 kcal / mh ° C. It is. Therefore, according to the heating device according to the present invention, the high-temperature thermal power required for heating and complete combustion of the combustion gas can be maintained for a long time while reducing the equipment cost. Further, the heating device according to the present invention uses heat generated when the wood fuel is burned in a bonfire state as a heat source, but at least the inside of the main body is made of the porous stone material, so that the combustion chamber has a temperature of 700 ° C. It is possible to prevent burns or fires from being exposed to a high temperature of a certain level or more, and it is excellent in durability and safety. Therefore, according to the heating device according to the present invention, it is possible to safely and efficiently heat not only the house but also various spaces.

It is a front view explaining one embodiment of the heating device concerning the present invention. It is side surface sectional drawing explaining one Embodiment of the heating apparatus which concerns on this invention. It is side surface sectional drawing explaining another embodiment of the heating apparatus which concerns on this invention.

  Hereinafter, embodiments of a heating apparatus according to the present invention will be described in detail with reference to the drawings. Here, FIG. 1 is a front view for explaining an embodiment of the heating device according to the present invention. Moreover, FIG. 2 is side surface sectional drawing explaining one Embodiment of the heating apparatus which concerns on this invention. And FIG. 3 is side surface sectional drawing explaining another embodiment of the heating apparatus which concerns on this invention.

  The heating device 1 according to the present invention includes a combustion chamber 10 in which a wood fuel 50 is combusted in a bonfire state, and includes at least an inner wall of the main body 2 with a porosity of 20 to 43% and heat resistance. It is composed of a porous stone material having a temperature of 700 ° C. or higher and a thermal conductivity of 0.65 to 0.75 kcal / mh ° C. Here, the heating device main body 2 of the present invention can be easily manufactured by assembling a porous stone material cut into a plate shape. Moreover, the heating apparatus main body 2 of this invention can reinforce the outer surface of the assembled porous stone material using nonflammable materials, such as concrete, a brick, and a steel frame.

  The heating device 1 according to the present invention includes a combustion chamber 10 in which the wood fuel 50 is burned in a bonfire state inside the main body 2. The heating device 1 according to the present invention uses heat generated as a heat source when the wood fuel 50 is burned in an open flame in the combustion chamber 10. Here, the bonfire means a state in which the woody fuel 50 such as firewood is burned and becomes charcoal fire. The bonfire has a high combustion temperature of about 600 ° C. or higher and the thermal power is stable for a relatively long time. Therefore, a wide range can be efficiently heated by using it as a heat source. In addition, since the bonfire requires a small amount of air to maintain the heat generation, the amount of heat released to the outside of the main body 2 of the heating device 1 as exhaust can be reduced, and the heating efficiency can be increased. Therefore, the heating device 1 according to the present invention burns the wood fuel 50 in the state of a bonfire, thereby converting the combustion energy of the wood fuel 50 into the heating capacity without leaving much and exhibits an excellent heating effect for a long time. It becomes possible.

  The heating device 1 according to the present invention warms the space to be heated by radiant heat emitted from the main body 2. As described above, the heating device 1 according to the present invention burns the wood fuel 50 in the state of bonfire and converts it into heating capacity, but at least the inner wall of the main body 2 has a porosity of 20 to 43% and a heat resistant temperature of 700. It can be used safely for a long period of time while maintaining the thermal power necessary for heating by comprising a porous stone material having a thermal conductivity of 0.65 to 0.75 kcal / mh ° C. or higher. As a result, according to the heating device 1 according to the present invention, the interior of the combustion chamber 10 is heated to a high temperature of about 700 ° C. or higher to completely burn the wood fuel, and the amount of radiant heat generated from the main body 2 is increased to efficiently heat the object. You can warm the space. Furthermore, according to the heating device 1 according to the present invention, the additionally supplied wood fuel 50 can be easily ignited, and heating can be performed for a while even after the combustion of the wood fuel 50 in the combustion chamber 10 is completed. And the heating apparatus 1 which concerns on this invention is suitable for heating the heating object space efficiently on the outer surface of the main body 2 by adjusting the thickness of the inner wall of the main body 2 composed of the porous stone material having the above-described conditions. Temperature.

  Here, if the porosity of the porous stone described above is less than 20%, the heat dissipation of the surface of the main body 2 cannot be sufficiently improved, and if the surface of the main body 2 is touched for a long time, a burn will be caused and the safety will occur. This is not preferable. Furthermore, if the porosity of the porous stone material is less than 20%, a sufficient heat insulation effect cannot be obtained due to a decrease in the air layer, and the heat retention effect for maintaining the temperature of the combustion chamber 10 at about 700 ° C. or more is stable and sufficient. It can no longer be demonstrated. On the other hand, when the porosity of the porous stone described above exceeds 43%, the strength becomes too small, which is not preferable in terms of durability. Further, if the heat resistance temperature of the porous stone material is less than 700 ° C., the wood fuel cannot be completely burned by setting the temperature in the combustion chamber 10 to about 700 ° C. or higher. And when the heat conductivity of the porous stone material mentioned above is less than 0.65 kcal / mh ° C., the thickness of the wall of the main body 2 made of the porous stone material is more than necessary when a heating effect by radiant heat is sufficiently obtained. However, it is difficult to make it durable. On the other hand, when the thermal conductivity of the porous stone material exceeds 0.75 kcal / mh ° C., the wall thickness of the main body 2 made of the porous stone material is more than necessary when the temperature of the combustion chamber 10 is about 700 ° C. or higher. If the thickness is not too large, the surface of the main body 2 may become too hot, which may cause a burn or a fire, which is not preferable in terms of safety.

  As the porous stone material of the present invention, tuff rock formed by sand, volcanic ash, etc. deposited on the ground or in water, sandstone rock mainly formed by consolidation of sand by diagenesis can be used. Tuff stones and sandstone stones have a porous structure with a very large number of pores, and among other types of stone materials, they have properties of low thermal conductivity and excellent heat resistance. It can satisfy the conditions of porosity, heat-resistant temperature, and thermal conductivity. For reference, some tuff stones are called Otani stone, Sapporo soft stone, Boso stone, Towada stone, etc. Sandstone stones include those called lion stone, sandstone white red, and the like. These porous stone materials have slightly different characteristics depending on the production area.

  In the heating device 1 according to the present invention, it is particularly preferable to use Otani stone among the types of tuff stone as the porous stone material. This is because Otani stone is particularly easy to process and inexpensive among the types of tuff stones, is excellent in fire resistance and durability, is lightweight, and is easy to handle. The heating device 1 according to the present invention can withstand long-term damage even if the temperature of the combustion chamber 10 rises to about 700 ° C. or more by configuring at least the inner wall of the main body 2 with Oya stone. And Otani stone is excellent in workability so that it can be easily cut out using a chain saw or the like, and is cheaper than a casting or steel plate or the like normally used for the main body material of a wood stove. Therefore, the heating apparatus 1 which concerns on this invention can aim at reduction of installation cost more effectively by using Oya stone as a porous stone material mentioned above.

  Here, in the heating device 1 according to the present invention, the main body 2 is made of the above-described porous stone material with the side wall 3 and / or the top wall 4 having a thickness of 60 mm to 150 mm, thereby improving durability and safety. This is preferable. That is, the heating device 1 according to the present invention is long even in a high-temperature environment where the inside of the main body 2 is about 700 ° C. or more because the side wall 3 and / or the top wall 4 of the main body 2 is made of porous stone having a thickness of 60 mm to 150 mm. While exhibiting excellent durability for a long period of time, the outer surface of the main body 2 can be prevented from being heated to such a high temperature that the safety is impaired, thereby improving safety. When the side wall 3 and / or the top wall 4 of the main body 2 is less than 60 mm in thickness, the combustion chamber 10 cannot exhibit sufficient fire resistance that can withstand a high temperature of about 700 ° C., and the combustion chamber 10 It becomes difficult to sufficiently exhibit the heat retaining effect of maintaining the temperature at a high temperature of about 700 ° C. In addition, when the side wall 3 and / or the top wall 4 of the main body 2 exceeds 150 mm in thickness, the outer surface of the main body 2 is not sufficiently high, and the amount of radiant heat generated from the main body 2 is reduced, and air diffusion ( It becomes difficult to efficiently heat the space to be heated without relying on (conduction heat).

  The heating apparatus 1 according to the present invention can suitably use firewood, logs, etc. as the wood fuel 50 by adopting the above-described configuration. In addition to the broad-leaved trees that have been used in the past (such as konara, kunugi, oak, cherry), coniferous trees (cedar, cypress, pine) can be used as the birch. The heating device 1 according to the present invention has no problem for a long time even if the wood fuel 50 uses firewood obtained from thinned wood of conifers with poor fire and poor combustion efficiency as fuel. Can continue to demonstrate. Generally, coniferous cocoons contain a large amount of components such as oil, so that the combustion temperature is likely to rise and the combustion speed of the fuel is increased, which is not economical. In order to solve this problem, when using softwood straw as a fuel, if the amount of air supplied to burn for a long time at a low temperature is reduced, incomplete combustion occurs and soot and tar are generated. Therefore, conventionally, it has been said that the wood fuel 50 made of coniferous trees is inappropriate for use as fuel. However, according to the heating device 1 of the present invention, since the combustion chamber 10 can be used without any trouble even in a state where the temperature in the combustion chamber 10 is maintained at a high temperature of about 700 ° C. or higher, it can be completely burned even if softwood wood is used. There is no problem of soot and tar adhering to the inside of the main body 2 to shorten the life of the main body.

  Moreover, since the temperature in the combustion chamber 10 is maintained at about 700 ° C. or higher in the heating device 1 according to the present invention, even if logs containing a lot of moisture are used as the wood fuel 50, an excessive amount in the combustion chamber 10 is used. There is no temperature drop. Therefore, according to the heating device 1 according to the present invention, even if the log 50a is used as the wood fuel 50, it can be completely burned, and soot and tar do not adhere to the inside of the main body 2. In addition, the heating apparatus 1 according to the present invention can use waste wood or the like of the building as the wood fuel 50 in addition to the log 50a, and eliminates the trouble of drying after splitting with an ax like the firewood 50b. , Fuel cost can be kept low.

  For example, as shown in FIG. 2, the heating device 1 according to the present invention can accommodate the log 50 a and the wood material 50 b, which are wood fuels 50, in the main body 2 to the full height. At this time, the heating device 1 according to the present invention can be provided with the fuel input door 5 at a position corresponding to the upper region in the main body 2, and the fuel input door 5 is slightly opened to allow a small amount of outside air to flow into the combustion chamber 10. By introducing into the inside, unburned gas (smoke) can be subjected to secondary combustion in the upper region in the combustion chamber 10. Therefore, the heating device 1 according to the present invention can significantly reduce the amount of smoke generated compared to a conventional wood stove, fireplace, or the like. Furthermore, the heating device 1 according to the present invention, as shown in FIG. 2, when the log 50 a and the brazing material 50 b are accommodated to the full height inside the main body 2, part or all of the fuel input door 5 is accommodated. By using heat-resistant glass, it is possible to enjoy watching and enjoying the appearance of the log 50a and the firewood 50b burning in the combustion chamber 10 emitting a fantastic aurora-like flame.

  In addition, the heating apparatus 1 which concerns on this invention can also supply the big wood fuel 50, such as log 50a, to the combustion chamber 10 in the state as it is by enlarging the fuel input door 5. As shown in FIG. Further, the fuel input door 5 can be manually opened and closed (see the arrows and dotted lines shown in FIGS. 2 and 3) by providing the fuel input door 5 with a handle 5a. And tuff stones such as Otani stone that can be used as the porous stone material of the present invention have a property that is brittle to the impact of external force, but a metal plate having excellent heat resistance as a reinforcing means at the location where the fuel input door 5 is provided. Can also be used.

  In the heating device 1 according to the present invention, it is preferable that the fuel input door 5 is provided with an outside air flow rate adjusting means for adjusting the amount of outside air introduced into the combustion chamber 10. The heating device 1 according to the present invention is provided with an outside air flow rate adjusting means for adjusting the amount of outside air introduced into the combustion chamber 10 in the fuel input door 5, thereby reducing the manufacturing cost without complicating the structure of the main body 2. I can do it. For example, the outside air flow rate adjusting means of the present invention can be configured to provide an outside air inlet that can adjust the opening area of the fuel input door 5 or to adjust the opening / closing amount of the fuel input door 5. Further, in the heating device 1 according to the present invention, when a part or all of the fuel charging door 5 is made of heat-resistant glass, the heat-resistant glass is cleaned when the outside air is introduced by providing the fuel charging door 5 with outside air flow rate adjusting means. Thus, a decrease in the transparency of the heat resistant glass can be suppressed.

  Here, immediately after ignition of the wood fuel 50 accommodated in the combustion chamber 10, combustion of the wood fuel 50 can be accelerated by increasing the amount of outside air introduced by the outside air flow rate adjusting means to increase the thermal power. Further, when the wood fuel 50 accommodated in the combustion chamber 10 is burned in a bonfire state, the outside air introduction amount is reduced by the outside air flow rate adjusting means so that the inside of the combustion chamber 10 is kept in a high temperature steady state for a long time. I can keep it. Incidentally, when the heating device 1 according to the present invention is configured as shown in FIG. 2, the amount of outside air introduced from the fuel input door 5 is ignited after the firewood 50 b is ignited in a state where the firewood 50 b is stacked on the log 50 a. By reducing the size, the log 50a becomes steamed due to high temperature and low oxygen, and the log 50a can be burned more smoothly in a fire.

  And it is preferable that the heating apparatus 1 which concerns on this invention is further provided with the secondary combustion chamber 30 which burns the unburned component contained in the combustion gas in the combustion chamber 10, as shown in FIG. If the wood fuel 50 is supplied when the temperature in the combustion chamber 10 is not sufficiently increased, unburned gas (smoke) is initially generated from the wood fuel 50 and black outside the heating device body 2. It will be emitted in the state of smoke. However, the heating device 1 according to the present invention includes the secondary combustion chamber 30, so that even when combustion gas containing unburned components such as soot and methane is generated in the combustion chamber 10, the smokeless state is almost burned out. Can be discharged to the outside of the main body 2. Therefore, the heating apparatus 1 according to the present invention can be used without any problem even in an urban area by further including the secondary combustion chamber 30. The heating device 1 according to the present invention can further include a tertiary or higher combustion chamber (not shown) in addition to the secondary combustion chamber 30, and the combustion mechanism employed in these secondary or higher combustion chambers. Can adopt a conventionally known method such as a clean burn method or a catalyst method as appropriate.

  Moreover, it is preferable that the heating apparatus 1 according to the present invention is provided with a gas flow rate adjusting means for adjusting the amount of combustion gas flowing into the secondary combustion chamber 30. The heating apparatus 1 according to the present invention employs a method of adjusting the area of the combustion gas inlet 30a of the secondary combustion chamber 30 from the outside as a means for adjusting the amount of combustion gas flowing into the secondary combustion chamber 30. I can do it. For example, the gas flow rate adjusting means of the present invention adjusts the area of the combustion gas inlet 30a of the secondary combustion chamber 30 by adjusting the angle of the bottom plate 31 constituting the secondary combustion chamber 30 as shown in FIG. Can be. In the heating device 1 according to the present invention, when the area of the combustion gas inlet 30a of the secondary combustion chamber 30 is reduced by the gas flow rate adjusting means, the ejector effect is exhibited, and the combustion gas generated in the combustion chamber 10 is drawn and drawn. By compressing the generated combustion gas, compression heat is generated, and the temperature of the secondary combustion chamber 30 can be raised to a high temperature (about 700 ° C. or higher) at which the unburned gas can be combusted. As a result, the heating apparatus 1 according to the present invention provides the gas flow rate adjusting means to reliably burn the unburned components contained in the combustion gas without providing the secondary combustion chamber 30 with a separate heating means. I can do it. The gas flow rate adjusting means of the present invention is not limited to the one that adjusts the angle of the bottom plate 31 shown in FIG. For example, the gas flow rate adjusting means of the present invention may include a wall body in which a plurality of slits are formed in the combustion gas inlet 30a of the secondary combustion chamber 30.

  And in the heating apparatus 1 which concerns on this invention, the main body 2 connects the combustion chamber 10, the thermal storage area | region 20 which retains the heat | fever which generate | occur | produced in the combustion chamber 10, and the secondary combustion chamber 30 in order from the lower part. It is preferable that the fuel input door 5 is provided at a position corresponding to the heat storage region 20. As shown in FIG. 3, the heating device 1 according to the present invention includes a heat storage region 20 that communicates with the upper end portion of the combustion chamber 10, so that the ground surface area of the heating device 1 can be increased without increasing the ground contact area. The amount of radiation heat can be increased by increasing the area. Further, by providing the fuel input door 5 at a position corresponding to the heat storage region 20, the wood fuel 50 can be additionally input without reducing the temperature in the combustion chamber 10 as much as possible.

  When the fuel input door 5 is provided at a position corresponding to the heat storage region 20, the heating device 1 according to the present invention preferably uses the cooking plate 100 disposed in the heat storage region 20. The heating device 1 according to the present invention can perform various things such as boiling water and pottery by adopting such a configuration. In this case, the cooking plate 100 as a whole becomes hot and generates a strong far-infrared ray, whereby a delicious dish can be made. Here, tuff stones such as Otani stone that can be used as the porous stone material of the present invention are porous minerals having adsorptive and deodorizing properties, so cooking was performed using the heating device 1 according to the present invention. In this case, the bad odor contained in the combustion gas can be effectively prevented from adhering to the food. In particular, Oyaishi has a chemically stable silicate (zeolite) as the main component, and therefore does not cause a chemical reaction that impairs the taste of the food during the baking process. Incidentally, when the heating device 1 according to the present invention is provided with the fuel input door 5 at a position corresponding to the heat storage region 20, a part or all of the fuel input door 5 is made of heat-resistant glass. It is possible to check the combustion state of the wood fuel 50 accommodated in the combustion chamber 10 without opening, and to check the state when boiling water or pottery is performed in the heat storage region 20.

  The heating device 1 according to the present invention more efficiently accelerates the combustion of the wood fuel 50 and cleans the air in the space to be heated by discharging carbon dioxide generated immediately after the wood fuel 50 is ignited to the outside. A chimney 8 can also be provided to keep the In the heating device 1 according to the present invention, the combustion chamber 10 is maintained at a high temperature of about 700 ° C. or more, so that the flow of air in the main body 2 is stabilized and the wood fuel 50 accommodated in the combustion chamber 10 is completely removed. Combustion is promoted, and the generation of smoke and ash can be made as close to zero as possible. Further, the heating device 1 according to the present invention includes the chimney 8 so that a sufficient draft effect is obtained, and an electric fan or the like is used, for example, supplying air to the combustion chamber 10 and derivation of air from the combustion chamber 10. At least it can be done by natural convection. In addition, the heating apparatus 1 which concerns on this invention has the same effect as the secondary combustion chamber 30 mentioned above inside the chimney attachment source 7 by comprising the chimney attachment source 7 with the member excellent in heat insulation. It can be made.

  Furthermore, the heating device 1 according to the present invention can also be provided with an opening / closing valve 9 at the mounting source 7 of the chimney 8. In the heating device 1 according to the present invention, since the flow path of the outside air is throttled by the opening / closing valve 9, the combustion gas stays in the combustion chamber 10 for a long time and complete combustion is promoted. The temperature is secured and the combustion efficiency is increased. For example, in FIG. 2, when the angle of the blade 9a of the on-off valve 9 is made closer to the vertical, the supply of air to the combustion chamber 10 and the derivation of air from the combustion chamber 10 are promoted, and the woody fuel immediately after ignition The combustion of can be promoted. Moreover, in FIG. 2, when the angle of the blade 9a of the opening / closing valve 9 is made closer to the horizontal, the confidentiality inside the heating apparatus main body 2 is enhanced, and the combustion of the wood fuel that has become a fire-fired state can be stabilized. In addition, the heating apparatus 1 according to the present invention stops the heating of the space to be heated by stopping the combustion of the wood fuel 50 accommodated in the combustion chamber 10 by completely closing the fuel input door 5 and the opening / closing valve 9. I can do it.

  Moreover, it is also preferable that the heating apparatus 1 in this invention provides the ash extraction door 6. FIG. The heating device 1 in the present invention can easily remove the ash accumulated at the bottom of the combustion chamber 10 by providing the ash removal door 6. In the heating device 1 according to the present invention, the wood fuel 50 is completely burned by setting the temperature in the combustion chamber 10 to about 700 ° C. or more, so that the amount of generated ash is extremely small, but still periodically It is necessary to remove the ash from the combustion chamber 10. Here, it is desirable to provide the ash removal door 6 in the vicinity of a position corresponding to the bottom of the combustion chamber 10 in order to take out the ash. In addition, since it is effective to send the air for burning the fuel from the bottom to the top, providing the ash removal door 6 in the vicinity of the position corresponding to the bottom of the combustion chamber 10 is a wooden fuel contained in the combustion chamber 10. This is also convenient when 50 is ignited. In addition, it becomes possible to open and close easily by pulling out the ash extraction door 6 manually by providing the handle 6a in the ash extraction door 6.

  As mentioned above, although the structure of the heating apparatus 1 which concerns on this invention was demonstrated, the shape of the heating apparatus 1 is not restricted to a box shape, For example, it can also be set as a cylindrical shape. In addition, the heating device 1 according to the present invention may be provided with a heat shield so that radiant heat generated from the main body 2 is transmitted in a predetermined direction and a fire does not occur. And it does not specifically limit regarding the magnitude | size of the heating apparatus 1 which concerns on this invention, It can determine on the basis of the total emitted-heat amount of the wood fuel 50 which can be accommodated at once.

  The heating device according to the present invention can maintain the high-temperature thermal power necessary for heating for a long time while reducing the equipment cost, and completely burns the woody fuel to generate unburned gas (smoke). It is effectively suppressed and has excellent durability and safety. In addition, the heating device according to the present invention can be preferably used coniferous wood and logs that are cheaper than hardwood as woody fuel, and the fuel cost can be kept low, so it is very practical. It is. Therefore, the heating device according to the present invention can be particularly preferably used in a cold region where high-temperature combustion is frequently used.

  And the heating apparatus which concerns on this invention is comprised with the porous stone material whose porosity is 20 to 43%, heat-resistant temperature is 700 degreeC or more, and heat conductivity is 0.65-0.75 kcal / mhdegreeC at least the inner wall of a main body. By doing so, even when the combustion temperature rises to a high temperature (about 700 ° C. or higher), which is outside the common sense of wood burning stoves, the surface temperature can be prevented from becoming high enough to cause burns. In the heating device according to the present invention, when Oya stone is used as the porous stone material, Oya stone is a highly self-humidifying material that adsorbs moisture and the like, has a good effect on the body, and has a beautiful texture. Therefore, it can be suitably used even in a residential area.

1 Heating device 2 Body (Heating device)
3 Side wall 4 Top wall 5 Fuel input door 5a Handle (fuel input door)
6 Ash door 6a Handle (ash door)
7 Chimney installation source 8 Chimney 9 Open / close valve 9a Blade (open / close valve)
10 Combustion chamber 20 Thermal storage region 30 Secondary combustion chamber 30a Combustion gas inlet 31 Bottom plate 50 Woody fuel (wood, log, etc.)
50a Log 50b Wood 100 Cooking plate

Claims (7)

A heating device configured with a combustion chamber for burning wood fuel in an open fire state inside the main body,
At least an inner wall of the main body is composed of a porous stone material having a porosity of 20 to 43%, a heat resistant temperature of 700 ° C or higher, and a thermal conductivity of 0.65 to 0.75 kcal / mh ° C. .   The heating apparatus according to claim 1, wherein at least an inner wall of the main body is made of the porous stone material having a side wall and / or a top wall having a thickness of 60 mm to 150 mm.   The heating device according to claim 1 or 2, wherein the porous stone material is Oya stone.   The heating device according to any one of claims 1 to 3, further comprising a secondary combustion chamber for burning unburned components contained in the combustion gas in the combustion chamber.   The heating apparatus according to claim 4, further comprising gas flow rate adjusting means for adjusting an inflow amount of the combustion gas into the secondary combustion chamber.   The main body, in order from the bottom, includes the combustion chamber, a heat storage region that retains heat generated in the combustion chamber, and the secondary combustion chamber in communication with each other, and a fuel input door at a position corresponding to the heat storage region The heating device according to any one of claims 1 to 5, wherein the heating device is provided.   The heating apparatus according to claim 6, wherein the fuel input door is provided with an outside air flow rate adjusting means for adjusting an outside air introduction amount into the combustion chamber.

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