Indoor and outdoor firewood and coal dual-purpose furnace

Abstract

The utility model discloses an indoor and outdoor firewood and coal dual-purpose furnace, which relates to the technical field of stoves and comprises a furnace body shell, a furnace pipe is arranged in the furnace body shell, a first grate is arranged at the bottom of the furnace pipe, a second grate is arranged at the top of the first grate, a shifting piece is welded on the edge of the top of the second grate, and the shifting piece penetrates through a through groove formed in the side wall of the furnace pipe. A through groove is formed in the top of the furnace pipe, an air inlet is formed in the side wall, right opposite to the through groove, of the furnace body shell, a plurality of first air inlet holes are formed in the side wall, below the through groove, of the furnace pipe, a plurality of second air inlet holes and a plurality of third air inlet holes are formed in the position close to the top of the furnace pipe from bottom to top, and an annular cover is arranged at the top of the furnace body shell. According to the energy-saving furnace, fuel can be fully combusted, the good combustion effect and use performance are achieved, the use performance and the energy-saving effect of the energy-saving furnace are improved, the unique functions of the first combustion chamber and the second combustion chamber are fully played through the design of the annular cover, and the practicability and functionality of the energy-saving furnace are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stoves, in particular to an indoor and outdoor wood and coal dual-purpose stove. Background Art

[0002] With the increasing requirements for environmental protection and people's pursuit of efficient energy utilization, the research and development of new energy-saving stoves has become an inevitable trend. Traditional wood-fired stoves generally have many problems. When burning wood-fired coal, traditional stoves often have difficulty in achieving an ideal combustion process due to inaccurate air intake control. For example, in the early stage of fuel combustion, the lack of reasonable air intake design leads to incomplete fuel combustion and serious energy waste. Furthermore, traditional stoves lack flexibility in smoke exhaust and heat utilization. The smoke exhaust port usually has a single function and cannot be effectively adjusted according to actual needs. When smoke exhaust is not required or waste heat needs to be utilized, the working mode cannot be switched well. Moreover, the stove has uneven heat distribution, which can easily cause local overheating or excessive heat loss, and cannot meet various cooking or heating needs. For this reason, we propose an indoor and outdoor wood-fired stove. Utility Model Content

[0003] The purpose of the utility model is to provide an indoor and outdoor wood and coal dual-purpose stove.

[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an indoor and outdoor wood-fired coal dual-purpose stove, comprising a stove body shell, a stove core provided inside the stove body shell, a grate 1 provided at the bottom of the stove core, a grate 2 provided on the top of the grate 1, the middle of the grate 2 being rotatably connected to the grate 1 via a rotating shaft, and a pick is welded to the top edge of the grate 2, the pick passes through a through slot provided on the side wall of the stove core, an air inlet is provided on the side wall of the stove body shell opposite to the through slot, and the side wall of the stove core below the through slot is provided with a A plurality of air inlet holes 1 are provided, and a plurality of air inlet holes 2 and air inlet holes 3 are provided from bottom to top near the top of the furnace, and the plurality of air inlet holes 1, 2 and 3 are evenly distributed in a circular shape. A furnace mouth ring is provided on the top edge of the furnace body shell, and a smoke exhaust pipe and a firewood adding pipe are provided on the furnace body shell between the furnace mouth ring and the furnace, respectively. A ring cover is provided on the top of the furnace mouth ring, and a plurality of micro-holes distributed in a circular shape are evenly spaced at intervals on the side wall of the ring cover near the top.

[0005] As a further solution of the present invention: the furnace body shell and the furnace core are both cylindrical, and the diameter of the furnace body shell is larger than the diameter of the furnace core, and the top and bottom of the furnace core are welded with annular plates that fit the inner wall of the furnace body shell, and the side wall of the annular plate at the bottom of the furnace core is connected to the side wall of the furnace body shell near the bottom by bolts.

[0006] As a further solution of the present invention: one edge of the grate is welded to the inner wall of the bottom of the furnace, and the diameter of grate 1 is equal to the diameter of grate 2, and the edges of both are in contact with the inner wall of the furnace.

[0007] As a further solution of the present invention: the smoke exhaust pipe and the firewood adding pipe are of the same size and proportion, and are symmetrically distributed on the front and rear sides of the furnace shell with the center of the furnace shell as the reference.

[0008] As a further solution of the present invention: a smoke valve plate is hinged on the top of the inner end of the smoke exhaust pipe, and a fire viewing window is hinged on the top of the inner end of the fire adding pipe, and high-temperature glass is installed in the fire viewing window.

[0009] As a further solution of the present invention: a through opening is opened at the bottom of the furnace body shell just below the firewood adding pipe, and an ash box is slidably connected to the through opening. The ash box is located just below the grate, and the length and width of the ash box are both larger than the diameter of the grate, and a handle is provided on the outside of the ash box. Handles are symmetrically provided on the left and right sides of the furnace body shell, and the handles are fixed to the side walls of the furnace body shell by screws, and a bottom plate is provided at the bottom of the furnace body shell, and universal wheels are installed at the four corners of the bottom of the bottom plate.

[0010] As a further solution of the present invention: the furnace cavity from the top of the furnace core to the furnace mouth ring is the first combustion chamber, the furnace cavity from the furnace mouth ring to the top of the ring cover is the second combustion chamber, and the bottom of the ring cover is fixed to the top of the furnace mouth ring by screws.

[0011] By adopting the above technical solution, compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The furnace shell and furnace liner designed in this utility model improve the performance and energy-saving effect of the entire fuel-fired dual-purpose energy-saving stove. Due to the annular space between the furnace shell and the furnace liner, the outside air is pushed by the fan and injected into the furnace liner from the first, second and third air inlet holes in sequence. The air furnace liner adopts a unique air intake design. The first air intake is oxygen-deficient combustion, which is designed to promote the production of a large amount of carbon monoxide by the fuel. The second air intake achieves saturated combustion, further promoting the combustion reaction. The third air intake achieves supersaturated combustion, thereby fully burning the generated combustible gas. This makes the energy-saving stove have good combustion effect and performance when using fuel-fired dual-purpose stoves.

[0013] 2. The design of the ring cover in the present invention gives full play to the unique role of the first combustion chamber and the second combustion chamber, further improving the practicality and functionality of the energy-saving stove. The first combustion chamber is provided with a smoke valve plate, which can adjust its opening and closing state at will according to actual needs. When the smoke exhaust port is closed, the second combustion chamber is activated, and the exhaust can be carried out by utilizing the opening on the side wall of the ring cover, effectively ensuring the smoothness of the exhaust pressure reduction and the stability of the uniform heat distribution, so that the stove body can still operate efficiently, safely and stably when the chimney is closed. When the smoke exhaust pipe is opened, the exhaust waste heat can be transmitted to other places to achieve the continuous heating function of food, greatly improving the energy utilization rate and combustion efficiency.

[0014] Other advantages, objectives and features of the present invention will be described in part in the following description and will be apparent to those skilled in the art based on an examination of the following or may be learned from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the energy-saving furnace in the embodiment of the utility model;

[0016] Figure 2 for Figure 1 A partial enlarged schematic diagram of point A in the middle;

[0017] Figure 3 This is a schematic structural diagram of the furnace shell in an embodiment of the present utility model;

[0018] Figure 4 This is a structural diagram of the second grate when it is opened in the embodiment of the present utility model;

[0019] Figure 5 This is a structural diagram of the second grate when it is closed in the embodiment of the present utility model;

[0020] Figure 6 This is a schematic diagram of the explosion of the energy-saving furnace in the embodiment of the utility model;

[0021] Figure 7 It is a cross-sectional view of an energy-saving furnace in an embodiment of the present utility model.

[0022] In the figure: 1. furnace body shell; 101. air inlet; 102. furnace mouth ring; 103. smoke exhaust duct; 1031. smoke valve plate; 104. firewood feeding pipe; 1041. fire viewing window; 105. opening; 106. handle; 2. furnace heart; 201. grate 1; 202. through groove; 203. air inlet 1; 204. air inlet 2; 205. air inlet 3; 206. annular plate; 3. grate 2; 301. paddle; 4. ring cover; 401. micropore; 5. ash box; 501. handle; 6. bottom plate; 601. universal wheel; 7. first combustion chamber; 8. second combustion chamber. DETAILED DESCRIPTION

[0023] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0024] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0025] Please see the attached Figure 1 -Attached Figure 7The utility model is an indoor and outdoor wood-fired coal dual-purpose stove, comprising a stove body shell 1, a stove core 2 being provided inside the stove body shell 1, a grate 1 201 being provided at the bottom of the stove core 2, a grate 2 3 being provided at the top of the grate 1 201, the middle portion of the grate 2 3 being rotatably connected to the grate 1 201 via a rotating shaft, and a paddle 301 being welded to the top edge of the grate 2 3. When the user operates the paddle 301, the paddle 301 drives the grate 2 3 to rotate around the rotating shaft. Since the grate 1 201 is fixed to the inner wall of the bottom of the stove core 2, the cooperative movement of the two can effectively stir the ash on the grate In this way, the ashes accumulated on the grate can be loosened and fall through the gap of the grate, realizing a convenient ash shaking function. The paddle 301 penetrates the through slot 202 provided on the side wall of the furnace 2. The side wall of the furnace shell 1 opposite to the through slot 202 is provided with an air inlet 101. The air inlet 101 can be used to install a fan to enhance the power and flow of the incoming air. A plurality of air inlet holes 1 203 are provided on the side wall of the furnace 2 below the through slot 202, and a plurality of air inlet holes 204 and air inlet holes 3 205 are provided near the top of the furnace 2 from bottom to top. Multiple air inlet holes 203, air inlet holes 204 and air inlet holes 3 205 are evenly distributed in a circular shape. The air inlet holes 203, air inlet holes 204 and air inlet holes 3 205 correspond to the primary air inlet, the secondary air inlet and the tertiary air inlet respectively. The primary air inlet is oxygen-deficient combustion, which is intended to cause the fuel to produce a large amount of carbon monoxide. The secondary air inlet achieves saturated combustion, which further promotes the combustion reaction. The tertiary air inlet achieves supersaturated combustion, thereby fully burning the generated combustible gas. A furnace mouth ring 102 is provided on the top edge of the furnace shell 1. The furnace body shell 1 between the ring 102 and the furnace core 2 is respectively provided with a smoke exhaust pipe 103 and a firewood adding pipe 104, and a ring cover 4 is provided on the top of the furnace mouth ring 102. A plurality of circularly distributed microholes 401 are evenly spaced near the top of the side wall of the ring cover 4. The distance from the microhole 401 to the top of the ring cover 4 is five millimeters, and the microholes 401 are also kept at a uniform distribution spacing of five millimeters. This layout design effectively ensures the smoothness of exhaust pressure reduction and the stability of uniform heat distribution, so that the furnace body can still operate efficiently, safely and stably when the chimney is closed.

[0026] In the first embodiment, the furnace shell 1 and the furnace liner 2 are both cylindrical, and the diameter of the furnace shell 1 is larger than the diameter of the furnace liner 2. Annular plates 206 that fit the inner wall of the furnace shell 1 are welded to the top and bottom of the furnace liner 2, and the side walls of the annular plates 206 at the bottom of the furnace liner 2 are connected to the side walls of the furnace shell 1 near the bottom by bolts. The edge of the first grate 201 is welded to the inner wall of the bottom of the furnace liner 2, and the diameter of the first grate 201 is equal to the diameter of the second grate 3, and the edges of both fit the inner wall of the furnace liner 2;

[0027] Specifically, the annular plates 206 at the top and bottom of the furnace liner 2 not only stabilize the position of the furnace liner 2, but also fit tightly against the inner wall of the furnace body shell 1, so that a specific air intake channel space is formed between the furnace liner 2 and the furnace body shell 1. When the fan installed at the air inlet 101 is started, from the air intake perspective, due to the presence of an annular space between the furnace body shell 1 and the furnace liner 2, the airflow generated by the fan can flow smoothly along this space into the interior of the furnace liner 2.

[0028] In the second embodiment, the smoke exhaust pipe 103 and the firewood adding pipe 104 are of the same size and proportion. The two are symmetrically distributed on the front and rear sides of the furnace shell 1 with the center of the furnace shell 1 as the reference. The top of the inner end of the smoke exhaust pipe 103 is hinged with a smoke valve plate 1031, and the top of the inner end of the firewood adding pipe 104 is hinged with a fire viewing window 1041. The fire viewing window 1041 is installed with high-temperature glass. A through opening 105 is opened at the bottom of the furnace shell 1 just below the firewood adding pipe 104. An ash box 5 is slidably connected to the through opening 105. The ash box 5 is located just below the grate 201. The length and width of the ash box 5 are both larger than the diameter of the grate 201, and a handle 501 is provided on the outside of the ash box 5. The left and right sides of the furnace shell 1 are symmetrically provided with handles 106, which are fixed to the side walls of the furnace shell 1 by screws. The bottom of the furnace shell 1 is provided with a bottom plate 6, and universal wheels 601 are installed at the four corners of the bottom of the bottom plate 6. The furnace cavity from the top of the furnace liner 2 to the furnace mouth ring 102 is the first combustion chamber 7, and the furnace cavity from the furnace mouth ring 102 to the top of the ring cover 4 is the second combustion chamber 8, and the bottom of the ring cover 4 is fixed to the top of the furnace mouth ring 102 by screws.

[0029] Specifically, the high-temperature glass in the fire viewing window 1041 has excellent high-temperature resistance and can work stably in the high-temperature environment of the furnace. The user can clearly and conveniently observe the burning state of the flame in the furnace through this high-temperature glass. During the combustion process, from the color, shape and jumping frequency of the flame, the user can intuitively judge whether the fuel is fully burned, whether the air intake is appropriate, the approximate range of the temperature in the furnace and other important information. In addition, when the smoke valve plate 1031 is closed, the micropores 401 on the side wall of the ring cover 4 can be used for exhaust to enable the second combustion chamber 8. When the smoke exhaust pipe 103 is opened, the exhausted waste heat can be transmitted to other places to achieve the continuous heating function of the food.

[0030] Working principle:

[0031] First, a fan is installed at the air inlet 101 to increase the power and flow of the incoming air. Since there is an annular space between the furnace shell 1 and the furnace 2, the airflow generated by the fan can flow smoothly along this space to the bottom of the furnace 2. Under the push of the fan, the outside air is injected into the furnace 2 from the air inlet 1 203, the air inlet 2 204 and the air inlet 3 205 in sequence. During the primary air intake stage, air enters at a specific flow rate, which in the oxygen-deficient environment causes the fuel to produce a large amount of carbon monoxide. During the secondary air intake, the fan can adjust the air volume according to the combustion requirements, so that the appropriate amount of air enters to achieve saturated combustion. During the tertiary air intake, supersaturated combustion is achieved, thereby fully burning the generated combustible gas.

[0032] Secondly, the flame formed by the combustion then enters the first combustion chamber 7. The first combustion chamber 7 is equipped with a smoke adding valve plate 1031. The smoke valve plate 1031 can be adjusted to its open and closed state according to actual needs. When the smoke valve plate 1031 is closed, the micro-holes 401 opened on the side wall of the ring cover 4 can be used for exhaust, and the second combustion chamber 8 is activated. When the smoke valve plate 1031 is opened, the exhaust waste heat can be transferred to other places to achieve the function of continuously heating the food.

[0033] Finally, when the user operates the paddle 301, the paddle 301 drives the grate 2 3 to rotate around the rotating shaft. Since the grate 1 201 is fixed to the inner wall of the bottom of the furnace 2, the cooperative movement of the two can effectively stir the ashes on the grate. In this way, the ashes accumulated on the grate are loosened and fall through the gaps in the grate, realizing a convenient ash shaking function. The user can flexibly adjust the frequency and intensity of the ash shaking according to the actual combustion conditions and the degree of ash accumulation, so as to ensure that the fuel in the furnace is always in a good ventilation and combustion environment. At this point, the entire work process ends.

[0034] The above-mentioned front, back, left, right, up and down are all based on the Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0036] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments.

[0037] For those skilled in the art, it is possible to make various changes, modifications, substitutions and variations to these embodiments without departing from the principles and spirit of the present invention, and they still fall within the scope of protection of the present invention.

Claims

1. An indoor and outdoor wood-fired coal stove, comprising a stove shell (1), characterized in that: A furnace (2) is provided inside the furnace shell (1), a furnace grate (201) is provided at the bottom of the furnace (2), a furnace grate (3) is provided on the top of the furnace grate (201), a middle portion of the furnace grate (3) is rotatably connected to the furnace grate (201) via a rotating shaft, and a pick (301) is welded to the top edge of the furnace grate (3), the pick (301) passes through a through slot (202) provided on the side wall of the furnace (2), an air inlet (101) is provided on the side wall of the furnace shell (1) opposite to the through slot (202), and a plurality of air inlet holes (203) are provided on the side wall of the furnace (2) below the through slot (202), and a plurality of air inlet holes (203) are provided on the side wall of the furnace (2) close to the furnace (2). At the top, a plurality of air inlet holes 2 (204) and air inlet holes 3 (205) are respectively provided from bottom to top, and the plurality of air inlet holes 1 (203), air inlet holes 2 (204) and air inlet holes 3 (205) are evenly distributed in a circular shape. A furnace mouth ring (102) is provided at the top edge of the furnace body shell (1), and a smoke exhaust pipe (103) and a firewood adding pipe (104) are respectively provided on the furnace body shell (1) between the furnace mouth ring (102) and the furnace core (2), and a ring cover (4) is provided on the top of the furnace mouth ring (102). A plurality of micro holes (401) distributed in a circular shape are evenly spaced at intervals on the side wall of the ring cover (4) near the top.

2. The indoor and outdoor wood and coal dual-purpose stove according to claim 1, characterized in that: The furnace shell (1) and the furnace lining (2) are both cylindrical, and the diameter of the furnace shell (1) is larger than the diameter of the furnace lining (2). The top and bottom of the furnace lining (2) are both welded with an annular plate (206) that fits the inner wall of the furnace shell (1), and the side wall of the annular plate (206) at the bottom of the furnace lining (2) is connected to the side wall of the furnace shell (1) near the bottom by bolts.

3. The indoor and outdoor wood and coal dual-purpose stove according to claim 1, characterized in that: The edge of the first grate (201) is welded to the inner wall of the bottom of the furnace (2), and the diameter of the first grate (201) is equal to the diameter of the second grate (3), and the edges of both are in contact with the inner wall of the furnace (2).

4. The indoor and outdoor wood and coal dual-purpose stove according to claim 1, characterized in that: The smoke exhaust pipe (103) and the firewood adding pipe (104) are of the same size and proportion, and are symmetrically distributed on the front and rear sides of the furnace shell (1) with the center of the furnace shell (1) as the reference.

5. The indoor and outdoor wood and coal dual-purpose stove according to claim 4, characterized in that: A smoke valve plate (1031) is hingedly connected to the top of the inner end of the smoke exhaust pipe (103), and a fire viewing window (1041) is hingedly connected to the top of the inner end of the firewood adding pipe (104). High-temperature glass is installed in the fire viewing window (1041).

6. The indoor and outdoor wood and coal dual-purpose stove according to claim 1, characterized in that: A through opening (105) is provided at the bottom of the furnace shell (1) directly below the firewood feeding pipe (104), and an ash receiving box (5) is slidably connected to the through opening (105). The ash receiving box (5) is located directly below the grate (201). The length and width of the ash receiving box (5) are both larger than the diameter of the grate (201), and a handle (501) is provided on the outside of the ash receiving box (5). Handles (106) are symmetrically provided on the left and right sides of the furnace shell (1), and the handles (106) are fixed to the side walls of the furnace shell (1) by screws. A bottom plate (6) is provided at the bottom of the furnace shell (1), and universal wheels (601) are installed at the four corners of the bottom of the bottom plate (6).

7. The indoor and outdoor wood and coal dual-purpose stove according to claim 1, characterized in that: The furnace cavity from the top of the furnace core (2) to the furnace mouth ring (102) is the first combustion chamber (7), the furnace cavity from the furnace mouth ring (102) to the top of the ring cover (4) is the second combustion chamber (8), and the bottom of the ring cover (4) is fixed to the top of the furnace mouth ring (102) by screws.

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