Automatic firewood-adding and wood-burning fireplace

Abstract

The utility model relates to the field of heating equipment, in particular to an automatic firewood adding and burning fireplace. Comprising a fireplace body and a fireplace shell, the upper portion of the wood storage bin is provided with a ventilation opening, and the bottom of the wood storage bin is communicated with the bottom of the combustion chamber. Automatic feeding of fuel in the fuel bin can be achieved, the firewood feeding frequency is greatly reduced, and particularly, time and labor are saved; moreover, the fireplace door does not need to be opened frequently, pollution to the indoor environment is reduced, fuel can be fully combusted, and the fireplace is more energy-saving and environment-friendly.

Description

Technical Field

[0001] The utility model relates to the field of heating equipment, in particular to an automatic wood-burning fireplace. Background Art

[0002] As a comfortable, healthy, safe, environmentally friendly and traditional cultural heating method, wood-burning fireplaces are increasingly sought after and loved by people because they use wood as fuel, are both economical and beautiful.

[0003] However, due to the limited combustion volume of the furnace, existing wood-burning fireplaces can only add a small amount of firewood manually each time, so the endurance of the fireplace is very limited. Firewood must be added every hour or so, which is very cumbersome. In addition, the furnace door needs to be opened each time firewood is added, and inevitably a small amount of smoke and fine wood ash will escape, polluting the indoor environment.

[0004] There are the following differences between a wood-burning fireplace and a common coal-burning stove: (1) Coal-burning stoves use coal as fuel, which is a pure fossil high-pollution energy source. When burned, it produces a large amount of smoke and carbon dioxide, increasing carbon emissions and polluting the environment. Wood-burning fireplaces use wood as fuel, which is a zero-carbon biomass renewable energy source that is beneficial to achieving emission reduction and carbon reduction goals; (2) When wood burns, the flame it produces is long and the fire distance is high, while the flame produced by coal burning is only 1 / 3 of that of wood; (3) Air supply: Coal burns slowly, has a high ignition point, and requires less air supply, while wood burns quickly, has a low ignition point, is easy to ignite, produces more smoke during the combustion process, and requires more air supply. Therefore, there is a fundamental difference in the structure of coal-burning stoves and wood-burning fireplaces. As a brand-new technical field, wood-burning fireplaces are in the initial stage, and the structure of coal-burning stoves cannot be simply applied to wood-burning fireplaces. Utility Model Content

[0005] The purpose of the utility model is to overcome the above-mentioned defects of the prior art and propose an automatic wood-burning fireplace, which can realize automatic addition of fuel in the fuel bin, greatly reducing the number of times of adding firewood, and is particularly time-saving and labor-saving; furthermore, there is no need to frequently open the fireplace door, reducing pollution to the indoor environment, and can make the fuel burn fully, which is more energy-saving and environmentally friendly.

[0006] The technical solution of the utility model is: an automatic wood-burning fireplace, comprising a furnace body and a fireplace shell, wherein the furnace body is provided with:

[0007] The combustion chamber is located at the front of the furnace;

[0008] The wood storage bin is located at the rear of the furnace body, and a vent is arranged at the top thereof, and the bottom of the wood storage bin is communicated with the bottom of the combustion chamber.

[0009] In the utility model, a heat insulating cavity or a heat insulating material is arranged inside the furnace body, and the heat insulating cavity or the heat insulating material divides the cavity inside the furnace body into a wood storage bin at the rear and a combustion chamber at the front.

[0010] The side wall of the wood storage bin is provided with a firewood adding opening for adding firewood;

[0011] The inner wall of the wood storage bin is provided with a protective plate;

[0012] An auxiliary smoke outlet is arranged above the wood storage bin, the wood storage bin is connected to the auxiliary smoke outlet, and an auxiliary smoke outlet regulating valve is arranged at the auxiliary smoke outlet;

[0013] An air regulating window is arranged at the lower part of the rear side wall of the furnace body, an air duct is arranged in the rear side wall of the furnace body, the air regulating window is connected with the vent through the duct, and air enters the wood storage bin through the air regulating window, the duct and the vent in sequence.

[0014] The bottom of the wood storage bin is connected to the combustion zone at the bottom of the combustion chamber through a grate plate, and the biomass fuel in the wood storage bin falls directly onto the grate plate.

[0015] The grate plate may be V-shaped; the grate plate may also be arranged in a horizontal direction; or arranged in an inclined direction.

[0016] When the grate plates are arranged in an inclined manner, the grate plate located below the wood storage bin is higher than the grate plate located below the combustion chamber.

[0017] The top of the combustion chamber is connected to the main smoke outlet through a smoke outlet channel, and an inclined guide plate is arranged in the smoke outlet channel; by setting the guide plate, the size of the smoke outlet gradually decreases from bottom to top, so as to increase the effective heat exchange area of ​​the fireplace and improve the thermal efficiency.

[0018] The beneficial effects of the utility model are:

[0019] (1) By providing a wood storage bin and a combustion chamber that are connected at the bottom, and connecting the wood storage bin and the bottom of the combustion chamber through a grate plate, the biomass fuel in the wood storage bin can automatically enter the combustion chamber for combustion, thereby realizing automatic feeding of fuel in the fuel bin, thereby greatly reducing the labor intensity of frequently adding firewood, saving both time and effort; at the same time, there is no need to open the furnace door during the fuel feeding process in the combustion chamber, thereby avoiding the emission of smoke and fine ash generated during the fuel combustion process in the combustion chamber to pollute the indoor environment;

[0020] (2) By providing ventilation holes in the wood storage bin, the biomass fuel at the bottom of the wood storage bin forms a reverse combustion flame and burns together with the fuel in the combustion chamber. During the reverse combustion process, the particles and combustible gases that are not fully burned can be further gasified and burned in the high temperature zone of the furnace, thereby achieving full combustion of the wood fuel, improving the utilization efficiency of wood combustion, and greatly reducing the smoke generated after the combustion of the biomass fuel, which is more energy-saving and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model in Example 1;

[0022] Figure 2 It is a schematic diagram of the structure of the utility model in Example 2;

[0023] Figure 3 It is a structural schematic diagram of the utility model in Example 3.

[0024] In the figure: 1 furnace body; 2 firewood cabinet; 3 combustion chamber; 4 wood storage bin; 5 insulation cavity; 6 biomass fuel; 7 firewood adding port; 8 protection plate; 9 ventilation port; 10 air duct; 11 air adjustment window; 12 ash drawer; 13 primary air inlet; 14 secondary air inlet; 15 convection air window; 16 tertiary air inlet; 17 furnace door; 18 glass; 19 glass air curtain air inlet; 20 guide plate; 21 main smoke outlet; 22 grate plate; 23 auxiliary smoke outlet; 24 auxiliary smoke outlet regulating valve; 25 fireplace shell; 26 cold air inlet window. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and understandable, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0026] The following description sets forth specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in a variety of other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Example 1

[0028] like Figure 1 As shown, the automatic wood-burning fireplace of the utility model comprises a furnace body 1 and a firewood cabinet 2 located below the furnace body. A combustion chamber 3 and a wood storage bin 4 are arranged in the furnace body, the wood storage bin 4 is arranged at the rear of the furnace body 1, and the combustion chamber 3 is arranged at the front of the furnace body 1, and the bottom of the wood storage bin 4 is connected to the bottom of the combustion chamber 3.

[0029] A furnace door 17 is provided at the front side wall of the furnace body, and a fireplace shell 25 is provided outside the other side walls of the furnace body. There are gaps between the inner wall surface of the fireplace shell 25 and the outer wall surface of the furnace body 1, and the gaps are interconnected, so that a heating cavity is formed between the fireplace shell 25 and the furnace body 1. A cold air inlet window 26 is provided at the lower rear side of the fireplace shell 25, and the cold air in the room enters the heating cavity between the furnace body 1 and the fireplace shell 25 through the cold air inlet window 26. A heat convection window 15 is provided above the furnace door 17, and the heating cavity between the furnace body and the fireplace shell is connected to the heat convection window 15. During the combustion of fuel in the furnace body 1, the air entering the heating cavity is heated, and the heated air flows from the lower part to the upper part of the heating cavity, forming a strong air thermal convection, and flows out from the heat convection window 15, releasing the heat generated by the fireplace into the room continuously to achieve the purpose of heating.

[0030] An insulating cavity or insulating material is provided inside the furnace body, and the insulating cavity or insulating material divides the cavity inside the furnace body into a wood storage bin 4 at the rear and a combustion chamber 3 at the front. In this embodiment, an insulating cavity 5 is provided inside the furnace body. The wood storage bin 4 is filled with biomass fuel 6 such as firewood and crop straw. A firewood adding port 7 is provided on one side of the wood storage bin. Before opening the firewood adding port 7, the auxiliary smoke outlet regulating valve 24 must be opened first to allow the smoke from the wood storage bin to be discharged in advance before opening the firewood adding port 7 furnace door to put biomass fuel into the wood storage bin. After the wood storage bin is filled with biomass fuel, the firewood adding port 7 and the auxiliary smoke outlet regulating valve 24 are closed, and the wood-burning fireplace starts to burn. A protective plate 8 is provided at the inner wall of the bin body of the wood storage bin, and the protective plate protects the bin body of the wood storage bin and also keeps the fuel in the wood storage bin warm. In this embodiment, the protective plate is made of carbon steel plate or stainless steel plate.

[0031] A secondary smoke outlet 23 is provided above the wood storage bin, and the secondary smoke outlet 23 is connected to the wood storage bin, and the smoke is controlled by the secondary smoke outlet regulating valve 24. When the fireplace is burning normally, the secondary smoke outlet regulating valve 24 is in a closed state; when firewood needs to be added, the secondary smoke outlet regulating valve 24 is first opened to guide the smoke from the wood storage bin, and then the firewood adding port 7 is opened to add firewood to prevent smoke leakage.

[0032] The upper part of the wood storage bin is provided with a vent 9. The lower part of the rear side wall of the furnace body is provided with a wind adjustment window 11, and the rear side of the furnace body is provided with a wind duct 10, and the wind adjustment window 11 is connected to the vent 9 of the wood storage bin through the wind duct 10. External air can enter the bin body of the wood storage bin 4 through the wind adjustment window 11, the wind duct 10, and the vent 9 in sequence, and the air intake into the wood storage bin can be adjusted through the wind adjustment window to control the burning speed of the firewood.

[0033] The top of the combustion chamber 3 is connected to the main smoke outlet 21. Glass 18 is provided on the furnace door 17, through which the combustion of the biomass fuel in the combustion chamber can be seen at any time. A glass air curtain air inlet 19 is provided above the rear side of the glass, through which a glass air curtain can be formed on the inner surface of the glass to prevent the glass from being smoked black.

[0034] An ash drawer 12 is provided at the bottom of the furnace body 1, and the dust generated by the combustion of biomass fuel eventually settles and falls on the ash drawer. A primary air inlet 13 is provided on the bottom plate of the furnace body 1, and external air can enter the furnace body through the primary air inlet 13. The primary air inlet realizes the primary air distribution combustion of the fireplace.

[0035] The side of the heat-insulating cavity 5 in the furnace body facing the combustion chamber is provided with a plurality of secondary air inlets 14. Under the pumping action of the external pump body, the external air enters the furnace body through the secondary air inlets 14. The secondary air inlets realize the secondary air distribution combustion of the fireplace.

[0036] During the combustion process inside the fireplace, it is necessary to continuously extract smoke and provide fresh air, and the fireplace is in a negative pressure state during the combustion process. Under the action of negative pressure, external air enters the furnace body from the lower part of the heat convection window 15. In this embodiment, a tertiary air inlet 16 is provided on the top of the combustion chamber, and external air enters the furnace body through the tertiary air inlet 16. The tertiary air inlet realizes the three-way air distribution of the fireplace for full combustion.

[0037] At the same time, a glass air curtain air inlet 19 is provided at the top of the combustion chamber near the rear side of the glass, and an air guide plate is provided at the glass air curtain air inlet 19. A part of the air flowing into the furnace body through the lower part of the heat convection window 15 flows into the combustion chamber through the tertiary air inlet 16 to achieve tertiary air distribution combustion; another part flows from top to bottom through the glass air curtain air inlet 19 and under the guidance of the air guide plate, forms a glass air curtain from top to bottom on the rear side of the glass 18. The glass air curtain can effectively prevent the smoke generated by the combustion in the combustion chamber from being adsorbed on the glass surface, so that the glass can be kept clean and transparent for a long time, and the purpose of watching the real fire burning through the glass for a long time is achieved.

[0038] A smoke outlet channel is provided at the top of the combustion chamber 3, and the smoke outlet channel is connected to the main smoke outlet 21 above the combustion chamber. An inclined guide plate 20 is provided in the smoke outlet channel, and the bottom of the guide plate 20 is fixedly connected to the side wall of the heat-insulating cavity 5. By providing an inclined guide plate, the smoke outlet at the top of the combustion chamber gradually becomes smaller, which has a certain blocking effect on the fuel combustion in the combustion chamber. Under the blocking effect of the guide plate, biomass fuel and combustible smoke can stay and burn for a longer time in the combustion chamber, achieving full combustion of the fuel, while also increasing the effective heat exchange area of ​​the fireplace to improve thermal efficiency.

[0039] The bottom of the combustion chamber is connected to the bottom of the wood storage bin, and the combustion zone at the bottom of the combustion chamber is connected to the bottom of the wood storage bin via a V-shaped grate plate 22. In this embodiment, the V-shaped grate plate is fixedly connected to the inner side wall of the furnace body.

[0040] The biomass fuel put into the wood storage bin falls to the rear of the V-shaped grate plate 22 under the action of gravity, and slides to the bottom of the V-shaped grate plate under the guidance of the inclined surface of the V-shaped grate plate. The biomass fuel in the front will be pushed by the biomass fuel behind it. As the biomass fuel is continuously filled into the wood storage bin, the biomass fuel in the front is pushed to the front of the V-shaped grate plate 22 by the biomass fuel behind it, and enters the combustion chamber 3 for combustion. When the biomass fuel in the combustion chamber 3 is fully burned, only a small amount of fine ash and charcoal fire remains, and its volume will be significantly reduced and almost disappear. At this time, the firewood in the wood storage bin will automatically fall to the V-shaped grate plate under the action of gravity, and slide and roll into the combustion chamber along the inclined surface of the grate plate 22 continuously, which can realize automatic feeding of the combustion chamber, thereby ensuring the continuous combustion of the biomass fuel in the combustion chamber.

[0041] In addition, during the combustion of the biomass fuel in the combustion chamber, since the upper part of the wood storage bin is provided with a vent 9, external air can enter the wood storage bin 4 through the vent 9. Therefore, the firewood at the bottom of the wood storage bin can form a reverse combustion flame, forming a common combustion flame with the combustion chamber. Through the reverse combustion in the wood storage bin, the particulate matter and combustible gas that are not fully burned can be further gasified and burned through the high temperature area of ​​the furnace, so that the biomass fuel can be burned more fully, making the wood burning fireplace more energy-saving and environmentally friendly.

[0042] The volume of the wood storage bin in the present application is not limited, so the wood storage bin can be made large enough. During the combustion process of the fireplace, the wood storage bin can be filled with biomass fuels such as firewood and crop straw at one time. The filled wood storage bin can enable the fireplace to burn continuously for more than 12 hours; in a low fire or fire-proof state, the fireplace can burn continuously for more than 24 hours, thereby greatly reducing the labor intensity of frequently adding firewood, saving both time and effort. Precisely because the fireplace can burn continuously for a long time, there is no need to open the furnace door to add fuel during the combustion process, thus greatly reducing the number of times the fireplace is opened. It only needs to open the furnace door when cleaning the ash, which greatly avoids the pollution caused by the escape of smoke and fine ash generated during the combustion process.

[0043] Example 2

[0044] Different from the first embodiment, in this embodiment, the grate plate 22 adopts a horizontal grate plate structure, such as Figure 2 shown.

[0045] The biomass fuel 6 in the wood storage bin 4 falls directly onto the grate plate 22 at the bottom of the wood storage bin under the action of its own gravity. The biomass fuel that first falls on the grate plate gradually moves from the rear of the grate plate to the front of the grate plate under the push of the biomass fuel at the rear, and enters the combustion chamber 3, thereby realizing the combustion of the biomass fuel.

[0046] The rest is the same as in Example 1.

[0047] Example 3

[0048] Different from the first embodiment, in this embodiment, the grate plate 22 adopts an inclined grate plate structure, such as Figure 3 As shown, the end of the grate plate below the wood storage bin 4 is higher than the end of the grate plate below the combustion chamber 3.

[0049] The biomass fuel 6 in the wood storage bin 4 falls directly onto the grate plate 22 at the bottom of the wood storage bin under its own gravity, and gradually slides down from the high point of the grate plate to the low point of the grate plate along the inclined surface of the grate plate 22, thereby entering the combustion chamber to achieve the combustion of the biomass fuel 6. The inclination angle of the grate plate 22 can be set to an angle suitable for the rolling of the burning wood.

[0050] The rest is the same as in Example 1.

[0051] Example 4

[0052] Different from Example 1, in this embodiment, a water exchange water jacket is provided on the outside of the furnace body 1, that is, the gap between the furnace body 1 and the fireplace shell 25 is filled with flowing water, and the heat generated by the biomass fuel in the furnace body 1 is transferred to the water. Through the flow of water and the cooperation of the water heating heat dissipation device, the heat can be transferred to multiple rooms separately to achieve the purpose of heating.

[0053] The rest is the same as in Example 1.

[0054] The wood-burning fireplace provided by the utility model is introduced in detail above. The principle and implementation method of the utility model are explained in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model. The above description of the disclosed embodiments enables professional and technical personnel in this field to implement or use the utility model. Various modifications to these embodiments will be obvious to professional and technical personnel in this field, and the general principles defined in this article can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to the embodiments shown in this article, but will conform to the widest range consistent with the principles and novel features disclosed in this article.

Claims

1. An automatic wood-burning fireplace, comprising a furnace body and a fireplace shell, characterized in that: The furnace is equipped with: The combustion chamber is located at the front of the furnace; The wood storage bin is located at the rear of the furnace body, and a vent is arranged at the top thereof, and the bottom of the wood storage bin is communicated with the bottom of the combustion chamber.

2. The automatic wood-burning fireplace according to claim 1, characterized in that: A heat-insulating cavity or heat-insulating material is arranged inside the furnace body, and the heat-insulating cavity or the heat-insulating material divides the cavity inside the furnace body into a wood storage bin at the rear and a combustion chamber at the front.

3. The automatic wood-burning fireplace according to claim 1, characterized in that: The side wall of the wood storage bin is provided with a firewood adding opening for adding firewood; The inner wall of the wood storage bin is provided with a protective plate; An auxiliary smoke outlet is arranged above the wood storage bin, the wood storage bin is connected to the auxiliary smoke outlet, and an auxiliary smoke outlet regulating valve is arranged at the auxiliary smoke outlet; An air regulating window is arranged at the lower part of the rear side wall of the furnace body, an air duct is arranged in the rear side wall of the furnace body, the air regulating window is connected with the vent through the duct, and air enters the wood storage bin through the air regulating window, the duct and the vent in sequence.

4. The automatic wood-burning fireplace according to claim 1, characterized in that: The bottom of the wood storage bin is connected to the combustion zone at the bottom of the combustion chamber through a grate plate, and the biomass fuel in the wood storage bin falls directly onto the grate plate.

5. The automatic wood-burning fireplace according to claim 4, characterized in that: The grate plate is V-shaped.

6. The automatic wood-burning fireplace according to claim 4, characterized in that: The grate plate is arranged in a horizontal direction.

7. The automatic wood-burning fireplace according to claim 4, characterized in that: The grate plate is arranged in an inclined manner, and the end of the grate plate located below the wood storage bin is higher than the end of the grate plate located below the combustion chamber.

8. The automatic wood-burning fireplace according to claim 1, characterized in that: The top of the combustion chamber is connected to the main smoke outlet through a smoke outlet channel, and an inclined guide plate is arranged in the smoke outlet channel; by arranging the guide plate, the size of the smoke outlet gradually decreases from bottom to top.

9. The automatic wood-burning fireplace according to claim 1, characterized in that: A water exchange water jacket is arranged on the outer side of the furnace body.

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