Energy-saving smokeless firewood stove

Abstract

The utility model discloses an energy-saving smokeless firewood stove which comprises a hearth, an upper hearth located at the top of a lower hearth and a smoke secondary combustor movably and replaceably installed between the lower hearth and the upper hearth, the smoke secondary combustor is composed of a combustor cylinder and a combustor cover plate, and the top of the lower hearth is provided with a combustion cylinder supporting face. A plurality of supporting stacks are distributed on the combustion cylinder supporting face of the lower hearth, an air inlet groove is formed between every two adjacent supporting stacks, the bottom of the upper hearth is arranged on the top of the supporting stack of the lower hearth, a plurality of air inlet holes are formed in the cylinder wall of the combustor cylinder, the bottom of the combustor cylinder is arranged on the combustion cylinder supporting face, and the combustor cover plate is arranged on a hearth bottom plate of the upper hearth. The smoke-free firewood stove is formed by combining the upper hearth, the lower hearth, the smoke secondary combustor and the smoke secondary combustor cover plate, the smoke secondary combustor can be replaced, it is guaranteed that the functions of the smoke secondary combustor are kept intact in the whole life cycle of the smoke-free firewood stove, and practicability is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to energy -conserving smokeless firewood stove technical field especially relates to a kind of biomass energy -conserving smokeless firewood stove. BACKGROUND

[0002] Firewood stove is used wood as burning raw material, wood combustion high temperature generated to the upper iron pot heating, realize cooking or steaming, because of easy to obtain material, it is universally used in rural areas (especially in vast mountainous rural areas), daily stir-fry, cooking of family.The traditional firewood stove is built by masonry on ground, and the upper part is open, with simple structure.In recent years, on the basis of a large number of researches on traditional firewood stove, various firewood stoves have been developed, and the core is to carry out secondary combustion of smoke containing a large amount of harmful substances generated during wood combustion, so as to reduce the harmful substances in the smoke discharged into the atmosphere to the minimum, and achieve the effect of environmental protection.However, the existing biomass smokeless firewood stove has the following defects: the smoke secondary combustor of the existing firewood stove is usually made of ordinary carbon steel or cast iron, the smoke generated by wood combustion contains a large amount of corrosive gas, and the smoke secondary combustor is embedded in the refractory cement of the upper and lower hearths as a whole.Ordinary carbon steel or ordinary cast iron is difficult to resist the corrosion of smoke, and will be corroded and damaged soon (usually 2-3 years).Because the upper and lower hearths and the combustor are integrated in structure, they cannot be repaired, and the smoke secondary combustion function is lost.The upper and lower hearths of the existing biomass smokeless firewood stove are mostly laid by hand, and the refractory material formula used is simple, which is easy to crack and partially fall off under the condition of long-term cold and hot alternation, which will affect the smoke secondary combustion function and reduce the smoke secondary combustion effect.The upper and lower hearths of the existing biomass smokeless firewood stove are mostly laid by hand, which has complex structure, consumes materials and time, and is high in price, so many consumers cannot accept it, which restricts the popularization and use of smokeless firewood stove. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a kind of energy -conserving smokeless firewood stove, and the upper and lower hearths adopt mechanical pressure casting high-temperature firing to improve the strength of the upper and lower hearths, and are made into independent parts, which are combined and installed as a whole structure when used, and the smoke secondary combustor can be replaced, solving a series of problems in the background technology.

[0004] The utility model achieves the purpose by the following technical solutions:

[0005] The utility model provides an energy -conserving type smokeless firewood stove, including lower hearth, the upper hearth of lower hearth top and the movable replaceable installation between the flue gas secondary combustor of lower hearth and upper hearth, the flue gas secondary combustor is by the two parts of combustor cylinder and combustor cover plate, the upper hearth top of lower hearth has combustion cylinder support surface, is equipped with several support piles on the combustion cylinder support surface of lower hearth, and the air inlet groove has between two adjacent support piles, the upper hearth bottom is placed on the support pile top of lower hearth, the cylinder wall of combustor cylinder is opened and has several air inlet holes, and the bottom of combustor cylinder is placed on the combustion cylinder support surface, and the combustor cover plate is placed on the hearth bottom plate of upper hearth.

[0006] In order to better realize the utility model, the combustor cylinder is in the shape of a tapered cylinder with a large upper part and a small lower part.

[0007] Preferably, the hearth bottom plate of the upper hearth has a sunken step in the center, and the combustor cover plate is placed on the sunken step of the upper hearth.

[0008] Preferably, the lower hearth has a firewood inlet, and the firewood inlet of the lower hearth is connected to a firewood passage box in a sealed manner. The upper hearth has a smoke outlet, and the smoke outlet of the upper hearth is connected to a chimney adapter.

[0009] Preferably, the utility model further includes a housing and a table panel. The upper hearth and the lower hearth are located inside the housing. The firewood passage box and the chimney adapter are fixedly connected to the housing. The table panel is fixed to the top of the housing. The table panel has a pot ring hole in the center. The pot ring hole of the table panel extends to have a pot ring.

[0010] Preferably, a pull-out ash drawer is installed on the housing.

[0011] Preferably, the upper hearth is connected to an upper hearth support frame at the bottom of the table panel.

[0012] Preferably, the upper hearth support frame includes a support ring, a plurality of support columns fixedly arranged on the support ring in a circumferential manner, and a smoke outlet cover connected to the chimney adapter. The upper hearth is installed on the support ring of the upper hearth support frame. The top ends of the support columns of the upper hearth support frame are connected to the table panel.

[0013] Preferably, a heat insulation gap cavity is provided between the pot ring and the top of the upper hearth. A heat insulation filler is installed in the heat insulation gap cavity.

[0014] Preferably, the housing has a plurality of ventilation holes. A stove door is hingedly connected to the outer end of the firewood passage box.

[0015] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0016] (1) The utility model discloses a high-strength independent upper hearth, a high-strength independent lower hearth, an alloy steel cast independent flue gas secondary combustor, an alloy steel cast flue gas secondary combustor cover plate combination, the flue gas secondary combustor realizes replaceable secondary combustor, guarantees that the flue gas secondary combustor keeps intact in the whole life cycle of smokeless firewood stove, greatly improves the practicality of smokeless firewood stove.

[0017] (2) The utility model discloses a high-strength independent upper hearth and lower hearth, which can be fixed in the shell through simple mechanism, greatly simplifying the structure of smokeless firewood stove, saving materials and manufacturing time, and effectively reducing production cost. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the external structure schematic diagram of the utility model;

[0019] Figure 2 It is Figure 1 It is the internal structure diagram after sectioning;

[0020] Figure 3 It is the structure schematic diagram of lower hearth, firewood access channel box and ash receiving drawer as a whole assembly;

[0021] Figure 4 It is the structure schematic diagram of upper hearth;

[0022] Figure 5 It is the structure schematic diagram of flue gas secondary combustor;

[0023] Figure 6 It is the structure schematic diagram of lower hearth;

[0024] Figure 7 It is the structure schematic diagram of upper hearth support frame;

[0025] Figure 8 It is the structure schematic diagram of shell and its table panel assembly.

[0026] Among them, the name corresponding to the reference sign in the drawing is:

[0027] 1-upper hearth, 2-lower hearth, 21-burning simple support surface, 22-air inlet groove, 3-flue gas secondary combustor, 31-combustor cylinder, 32-combustor cover plate, 33-air inlet hole, 4-firewood access channel box, 41-hearth door, 42-firewood access port, 5-chimney adapter, 51-smoke outlet, 6-upper hearth support frame, 61-support ring, 62-support column, 63-smoke outlet cover, 7-table panel, 8-pot ring, 9-heat insulation gap cavity, 10-ash receiving drawer, 11-shell. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0029] As shown in the figure, Figures 1-8 An energy-saving smokeless fire stove comprises a lower hearth 2, an upper hearth 1 located at the top of the lower hearth 2, and a flue gas secondary combustor 3 movably and replaceably installed between the lower hearth 2 and the upper hearth 1. The lower hearth 2 and the upper hearth 1 are both made of high-strength material as independent parts. The flue gas secondary combustor 3 is movably and replaceably installed, facilitating replacement operation during subsequent maintenance. The flue gas secondary combustor 3 is made of alloy steel. Figure 5 As shown in the figure, the flue gas secondary combustor 3 is composed of a combustor cylinder 31 and a combustor cover plate 32. The combustor cylinder 31 is in the shape of a whole conical cylinder. The combustor cylinder 31 is entered by a combustion flame at the lower end of the cylinder. The combustion flame is further combusted (carbon monoxide is fully combusted) in the combustor cylinder 31. The flame at the upper end of the cylinder of the combustor cylinder 31 uniformly heats the bottom area of a pot body located on the fire stove. The air inlet holes 33 of the combustor cylinder 31 are circumferentially distributed on the cylinder wall of the combustor cylinder 31. The combustor cover plate 32 is movably covered on the upper end of the cylinder of the combustor cylinder 31 (the combustor cover plate 32 has a flame through hole at the center).

[0030] As shown in the figure, Figure 6 The lower hearth 2 has a combustion cylinder support surface 21 at the top. A plurality of support piles are distributed on the combustion cylinder support surface 21 of the lower hearth 2. Adjacent two support piles have air inlet grooves 22 (external air enters through the air inlet grooves 22). The bottom of the upper hearth 1 is located on the top of the support piles of the lower hearth 2. A plurality of air inlet holes 33 are opened on the simple wall of the combustor cylinder 31 (external air enters the combustor cylinder 31 through each air inlet hole 33 to realize secondary combustion and fully combust carbon monoxide in the flame or flue gas). The bottom of the combustor cylinder 31 is located on the combustion cylinder support surface 21. The combustor cover plate 32 is located on the hearth bottom plate of the upper hearth 1. Preferably, the hearth bottom plate of the upper hearth 1 has a sunken step at the center. The combustor cover plate 32 is placed on the sunken step of the upper hearth 1 (the combustor cover plate 32 is flush with the hearth bottom plate of the upper hearth 1 to form a plane).

[0031] The lower hearth 2 is provided with a firewood inlet 42. The firewood inlet 42 of the lower hearth 2 is hermetically connected with a firewood inlet channel box 4. The upper hearth 1 is provided with a smoke outlet 51. The smoke outlet 51 of the upper hearth 1 is connected with a chimney adapter 5. The bottom of the upper hearth 1 is connected with an upper hearth support frame 6 with the bottom of the table plate 7. In addition, the upper hearth support beam is installed on the shell 11 of the utility model. Figure 7As shown in the drawings, the upper hearth support frame 6 comprises a support ring 61, a plurality of support columns 62 fixed on the support ring 61 in a circumferential distribution, and a smoke outlet cover 63 installed on the upper hearth support frame 6, the smoke outlet cover 63 being used for installing the chimney adapter 5, the upper hearth 1 being installed on the support ring 61 of the upper hearth support frame 6, and the top end of the support column 62 of the upper hearth support frame 6 being connected with the table panel 7 (which can be a pot ring 8 extended from the table panel 7).

[0032] As shown in the drawings, Figure 1 , 8 The utility model also comprises a shell 11 and a table panel 7, the upper hearth 1 and the lower hearth 2 are located inside the shell 11, the firewood inlet channel box 4 and the chimney adapter 5 are connected and fixed with the shell 11, the table panel 7 is fixed on the top of the shell 11, the table panel 7 is provided with a pot ring hole in the center, and the table panel 7 is extended with a pot ring 8 at the pot ring hole. Figure 3 As shown in the drawings, the lower hearth 2, the firewood inlet channel box 4 and the ash receiving drawer 10 are assembled as an integral structure. Figure 2 As shown in the drawings, the bottom of the shell 11 is provided with a lower hearth support beam, and the lower hearth 2, the firewood inlet channel box 4 and the ash receiving drawer 10 are stably supported on the lower hearth support beam, so as to facilitate structural support. The shell 11 is installed with a pull-out ash receiving drawer 10, the ash receiving drawer 10 is used for storing ash after combustion, and the air inlet amount can also be controlled (when the ash receiving drawer 10 is pulled open, air will enter the combustion area of the lower hearth 2 through the ash receiving drawer 10). The pot ring 8 is separated from the top of the upper hearth 1 by a heat insulation gap cavity 9, and the heat insulation gap cavity 9 is filled with a heat insulation filler. The shell 11 is provided with a plurality of ventilation holes, and the outer end of the firewood inlet channel box 4 is hingedly connected with a stove door 41 (the stove door 41 can be flipped to open or close, and the stove door 41 is generally closed during combustion).

[0033] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An energy saving smokeless firewood stove characterized by: The utility model provides a kind of double furnace, including lower hearth (2), upper hearth (1) located in the top of lower hearth (2) and movable replaceable installation between lower hearth (2) and upper hearth (1) flue gas secondary combustor (3), flue gas secondary combustor (3) is made of two parts of combustor cylinder (31) and combustor cover plate (32), the top of the lower hearth (2) has combustion cylinder support surface (21), combustion cylinder support surface (21) of the lower hearth (2) is distributed with a plurality of support piles, adjacent two support piles are air inlet groove (22), the bottom of the upper hearth (1) is located on the top of the support pile of lower hearth (2), the cylinder wall of the combustor cylinder (31) is opened with a plurality of air inlet holes (33), combustor cylinder (31) is placed on combustion cylinder support surface (21), and combustor cover plate (32) is placed on the hearth bottom plate of upper hearth (1).

2. The energy-saving smokeless firewood stove according to claim 1, characterized in that: The combustor cylinder (31) is a whole conical cylinder shape, and the air inlet holes (33) of the combustor cylinder (31) are circumferentially distributed on the cylinder wall of the combustor cylinder (31).

3. The energy-saving smokeless firewood stove according to claim 2, characterized in that: The hearth bottom plate of the upper hearth (1) is recessed in the center to have a sunken step, and the combustor cover plate (32) is placed on the sunken step of the upper hearth (1).

4. The energy-saving smokeless firewood stove according to claim 1, characterized in that: The lower hearth (2) is provided with a wood inlet (42), and the wood inlet (42) of the lower hearth (2) is tightly connected with a wood inlet channel box (4). The upper hearth (1) is provided with a smoke outlet (51), and the smoke outlet (51) of the upper hearth (1) is connected with a chimney adapter (5).

5. The energy-saving smokeless firewood stove according to claim 4, characterized in that: Further comprising a housing (11) and a table panel (7), the upper hearth (1) and the lower hearth (2) are located inside the housing (11), the wood inlet channel box (4) and the chimney adapter (5) are fixedly connected with the housing (11), the table panel (7) is fixed on the top of the housing (11), the table panel (7) is provided with a pot ring hole in the center, and the pot ring hole of the table panel (7) is extended to have a pot ring (8).

6. The energy-saving smokeless firewood stove according to claim 5, characterized in that: The housing (11) is provided with a pull-out type dust collection drawer (10).

7. The energy-saving smokeless firewood stove according to claim 5, characterized in that: The bottom of the upper hearth (1) is connected with an upper hearth support frame (6) at the bottom of the table panel (7).

8. The energy-saving smokeless firewood stove according to claim 7, characterized in that: The upper hearth support frame (6) comprises a support ring (61), a plurality of support columns (62) circumferentially fixed on the support ring (61), and a smoke outlet cover (63) connected with the chimney adapter (5), the upper hearth (1) is installed on the support ring (61) of the upper hearth support frame (6), and the top end of the support column (62) of the upper hearth support frame (6) is connected with the table panel (7).

9. The energy-saving smokeless firewood stove according to claim 5, characterized in that: The pot ring (8) is separated from the top of the upper hearth (1) by a heat insulation gap cavity (9), and the heat insulation gap cavity (9) is filled with a heat insulation filler.

10. The energy-saving smokeless firewood stove according to claim 5, characterized in that: The housing (11) is provided with a plurality of ventilation holes, and the outer end of the wood inlet channel box (4) is hingedly connected with a stove door (41).

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