A high efficiency combustion furnace

Abstract

This utility model relates to the field of stove technology and discloses a high-efficiency combustion stove, including a stove body. An inner furnace cylinder, comprising an inner furnace cylinder body and a guide cylinder, is housed within the stove body. A lower baffle is connected between the bottom of the inner furnace cylinder body and the inner wall of the stove body, forming a first air inlet cavity between the lower baffle and the bottom plate of the stove body. A first air inlet communicating with the first air inlet cavity is provided on the bottom side wall of the stove body. An upper baffle is connected between the top of the guide cylinder and the side wall of the stove body, forming a smoke exhaust cavity between the upper baffle and the top plate of the stove body, and the smoke exhaust cavity is connected to a smoke exhaust port. A second air inlet cavity is formed by the inner furnace cylinder body, the guide cylinder, the upper baffle, the lower baffle, and the stove body. A second air inlet communicating with the second air inlet cavity is provided on the side wall of the stove body. A discharge port is opened on the side wall of the inner furnace cylinder body, communicating with a feeding cylinder extending out of the stove body. Combustion-aiding holes are provided on the side wall of the inner furnace body. A furnace plate is matched to the top of the stove body, and a grate is provided at the bottom of the inner furnace cylinder body.

Description

Technical Field

[0001] This utility model relates to the field of stove technology, and in particular to a high-efficiency combustion stove. Background Technology

[0002] In northern my country, winter heating still mainly relies on coal-fired stoves or burning firewood. Currently, commercially available stoves often suffer from incomplete combustion, producing "black smoke" that pollutes the environment, has low thermal efficiency, and wastes energy. Furthermore, these stoves are generally only used for heating or heating only, making their function relatively limited. Utility Model Content

[0003] This utility model provides a high-efficiency combustion furnace that can be used for both cooking and heating, and is economical, practical, energy-saving and environmentally friendly.

[0004] The above-mentioned objective of the utility model is achieved through the following technical solution:

[0005] A high-efficiency combustion furnace includes a furnace body with an internally hollow cylindrical structure. An inner furnace cylinder is fitted inside the furnace body. The inner furnace cylinder includes an inner furnace cylinder body and a guide cylinder. The top of the inner furnace cylinder body is necked to form the guide cylinder. A lower baffle is circumferentially sealed between the bottom of the inner furnace cylinder body and the inner wall of the furnace body. A first air inlet cavity is formed between the lower baffle and the bottom plate of the furnace body. A first air inlet port communicating with the first air inlet cavity is provided on the bottom side wall of the furnace body. A first air inlet damper is provided at the first air inlet port. An upper baffle is circumferentially sealed between the top of the guide cylinder and the side wall of the furnace body. The upper baffle and the top plate of the furnace body form a flue gas chamber, and the side wall of the furnace body is provided with a flue gas outlet communicating with the flue gas chamber; the inner furnace cylinder body, the guide cylinder, the upper baffle, the lower baffle and the furnace body form a second air inlet chamber, and the side wall of the furnace body above the lower baffle is provided with a second air inlet communicating with the second air inlet chamber, and a second air inlet door is provided at the second air inlet; the side wall of the inner furnace cylinder body is provided with a discharge port communicating with the inner cavity of the inner furnace cylinder body, and the discharge port is connected to a feeding cylinder extending out of the furnace body; the side wall of the inner furnace cylinder is provided with a combustion-supporting hole; the top of the furnace body is matched with a furnace plate, and the bottom of the inner furnace cylinder body is provided with a grate.

[0006] In the aforementioned high-efficiency combustion furnace, the combustion-supporting holes include a first combustion-supporting hole and a second combustion-supporting hole located in the middle and upper part of the inner furnace cylinder body, and a third combustion-supporting hole located on the guide tube; the first and second combustion-supporting holes are arranged in a plurality of circumferential directions along the side wall of the inner furnace cylinder body; the third combustion-supporting hole is arranged in a plurality of circumferential directions along the side wall of the guide tube.

[0007] In the aforementioned high-efficiency combustion furnace, the first combustion-supporting holes are arranged in a horizontal row, and the second combustion-supporting holes are distributed horizontally in 2-5 rows at intervals along the top of the inner furnace cylinder body.

[0008] In the aforementioned high-efficiency combustion furnace, the third combustion-supporting holes are evenly distributed in several rows along the upper and lower horizontal dimensions of the guide tube.

[0009] In the aforementioned high-efficiency combustion furnace, the first air inlet door is provided with a first air inlet hole, and the first air inlet hole is provided with a first adjusting plate that can adjust the size of the first air inlet hole.

[0010] In the aforementioned high-efficiency combustion furnace, the first air inlet chamber is provided with an ash hopper corresponding to the first air inlet for collecting ash after combustion. The ash hopper can slide out of the first air inlet, and the first air inlet door is provided on the ash hopper corresponding to the first air inlet.

[0011] In the aforementioned high-efficiency combustion furnace, the second air inlet door is provided with a second air inlet hole, and the second air inlet hole is provided with a second adjusting plate that can adjust the size of the second air inlet hole.

[0012] In the aforementioned high-efficiency combustion furnace, the exhaust port is connected to the exhaust stack, and the side wall of the exhaust stack is fitted and connected to the oven.

[0013] In the aforementioned high-efficiency combustion furnace, the feeding cylinder is inclined upwards, the feeding cylinder is sealed to the side wall of the furnace body, and the inlet of the feeding cylinder is provided with a feeding door that can be opened or closed.

[0014] In the aforementioned high-efficiency combustion furnace, an observation port communicating with the flue gas chamber is provided on the side wall of the furnace body, and the observation port is sealed with fire-resistant glass.

[0015] In summary, the beneficial technical effects of this utility model are as follows:

[0016] The high-efficiency combustion furnace provided by this utility model has an inner furnace cylinder installed inside the furnace body. The inner furnace cylinder includes an inner furnace cylinder body and a guide cylinder. The top of the inner furnace cylinder body is necked to form the guide cylinder. A lower baffle is sealed and connected to the bottom of the inner furnace cylinder body along the circumference of the inner furnace cylinder body. A first air inlet cavity is formed between the lower baffle and the bottom plate of the furnace body. A first air inlet port communicating with the first air inlet cavity is provided on the bottom side wall of the furnace body. A first air inlet door is provided at the first air inlet port. An upper baffle is sealed and connected to the top of the guide cylinder along the circumference of the guide cylinder. A smoke exhaust chamber is formed between the inner furnace cylinder and the top plate of the furnace body. The side wall of the furnace body has a smoke exhaust port communicating with the smoke exhaust chamber. A second air intake chamber is formed between the inner furnace cylinder body, guide cylinder, upper baffle, lower baffle, and furnace body. A second air intake port communicating with the second air intake chamber is located on the side wall of the furnace body above the lower baffle. A second air intake door is located at the second air intake port. A discharge port communicating with the inner cavity of the inner furnace cylinder body is opened on the side wall of the inner furnace cylinder body. The discharge port communicates with a feeding cylinder extending out of the furnace body. Combustion-aiding holes are provided on the side wall of the inner furnace cylinder. A furnace plate is fitted to the top of the furnace body, and a grate is provided at the bottom of the inner furnace cylinder body. This combustion furnace can be used for both domestic cooking heating and heating. It has high thermal efficiency, complete combustion, and greatly reduces "black smoke" emissions, making it energy-saving, environmentally friendly, economical, and practical. The heat generated by fuel combustion can also be conducted to the outer wall of the oven through the smoke exhaust pipe for baking food inside the oven. Attached Figure Description

[0017] Figure 1 This is the front view of this utility model;

[0018] Figure 2 yes Figure 1 A longitudinal sectional view;

[0019] Figure 3 This is a left view of the present invention;

[0020] Figure 4 yes Figure 3 A longitudinal sectional view.

[0021] The diagram shows: 1. Furnace body; 11. Lower baffle; 111. Grate; 12. First air inlet; 121. First air inlet damper; 1211. First air inlet hole; 13. Upper baffle; 14. Smoke outlet; 141. Smoke duct; 15. Second air inlet; 151. Second air inlet damper; 1511. Second air inlet hole; 16. Observation port; 17. Furnace plate; 2. Inner furnace cylinder; 21. Inner furnace cylinder body; 22. Guide cylinder; 23. Combustion aid hole; 231. First combustion aid hole; 232. Second combustion aid hole; 233. Third combustion aid hole; 24. Discharge port; 241. Feeding cylinder; 242. Feeding gate; 3. First air inlet chamber; 4. Smoke exhaust chamber; 5. Second air inlet chamber; 6. Oven. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-4The present invention will be described in further detail below.

[0023] A high-efficiency combustion furnace includes a furnace body 1, the interior of which is a hollow cylinder. An inner furnace cylinder 2 is housed within the furnace body 1. The inner furnace cylinder 2 includes an inner furnace cylinder body 21 and a guide cylinder 22. The top of the inner furnace cylinder body 21 is necked to form the guide cylinder 22. A lower baffle 11 is circumferentially sealed between the bottom of the inner furnace cylinder body 21 and the inner wall of the furnace body 1. A first air inlet 3 is formed between the lower baffle 11 and the bottom plate of the furnace body 1. A first air inlet 12 communicating with the first air inlet 3 is provided on the bottom side wall of the furnace body 1. A first air inlet door 121 is provided at the first air inlet 12. An upper baffle 13 is circumferentially sealed between the top of the guide cylinder 22 and the side wall of the furnace body 1. A flue gas chamber 4 is formed between the upper baffle 13 and the top plate of the furnace body 1. The side wall of the furnace body 1 is provided with a flue gas outlet 14 that communicates with the flue gas chamber 4; the inner furnace cylinder body 21, the guide cylinder 22, the upper baffle 13, the lower baffle 11 and the furnace body 1 form a second air inlet chamber 5. The side wall of the furnace body 1 above the lower baffle 11 is provided with a second air inlet 15 that communicates with the second air inlet chamber 5. A second air inlet door 151 is provided at the second air inlet 15. The side wall of the inner furnace cylinder body 21 is provided with a discharge port 24 that communicates with the inner cavity of the inner furnace cylinder body 21. The discharge port 24 communicates with the feeding cylinder 241 that extends out of the furnace body 1. The side wall of the inner furnace cylinder 2 is provided with a combustion-supporting hole 23. The top of the furnace body 1 is matched with a furnace plate 17. The bottom of the inner furnace cylinder body 21 is provided with a grate 111. Ashes from the combustion of coal or wood can fall into the first air inlet chamber 3 through the grate 111.

[0024] The combustion-supporting holes 23 include a first combustion-supporting hole 231 and a second combustion-supporting hole 232 located in the middle and upper part of the inner furnace cylinder body 21, and a third combustion-supporting hole 233 located on the guide tube 22; the first combustion-supporting holes 231 and the second combustion-supporting holes 232 are arranged in several circumferential directions along the side wall of the inner furnace cylinder body 21; the third combustion-supporting holes 233 are arranged in several circumferential directions along the side wall of the guide tube 22.

[0025] The first air inlet door 121 is provided with a first air inlet hole 1211, and a first adjusting plate is provided at the first air inlet hole 1211 to adjust the size of the first air inlet hole 1211.

[0026] The second air inlet door 151 is provided with a second air inlet hole 1511, and a second adjusting plate is provided at the second air inlet hole 1511 to adjust the size of the second air inlet hole 1511.

[0027] The exhaust port 14 is connected to the exhaust pipe 141, and the side wall of the exhaust pipe 141 is attached to the oven 6. The heat generated by the combustion of fuel is conducted to the outer wall of the oven 6 through the exhaust pipe 141 to bake the food inside the oven 6.

[0028] The feeding cylinder 241 is inclined upward and is sealed to the side wall of the furnace body 1. The inlet of the feeding cylinder 241 is provided with a feeding door 242 that can be opened or closed.

[0029] An observation port 16 communicating with the flue gas chamber 4 is provided on the side wall of the furnace body 1, and a fire-resistant glass is sealed to the observation port 16. The combustion status of fuel and the effect of smoke gasification in the flue gas chamber 4 can be observed through the observation port 16.

[0030] In this embodiment, the first combustion-supporting hole 231 is a horizontal row, and the second combustion-supporting hole 232 is distributed horizontally in 2-5 rows along the top of the inner furnace cylinder body 21.

[0031] The third combustion-supporting holes 233 are evenly distributed in several rows along the upper and lower horizontal direction of the guide tube 22.

[0032] In one embodiment, the first air inlet chamber 3 is provided with an ash hopper (not shown in the figure) corresponding to the first air inlet 12. The ash hopper can receive the ash falling from the grate 111 during fuel combustion, which facilitates the timely handling of the ash. The ash hopper can slide out of the first air inlet 12, and the first air inlet door 121 is provided on the ash hopper corresponding to the first air inlet 12.

[0033] The area above grate 111 is where fuel combustion is most complete, resulting in the highest temperature. As the grate rises, the temperature gradually decreases, leading to increasingly incomplete combustion and the production of large amounts of black smoke. This black smoke contains many unburned components. The black smoke is guided into the guide tube 22 through the first and second combustion-supporting holes 231 and 232 of the inner furnace cylinder 2 for gasification and combustion, and then discharged through the exhaust pipe 141. The guide tube 22 is connected to the inner cavity of the inner furnace cylinder body 21 above grate 111, ensuring that the fuel is fully combusted and gasified as it is discharged, eliminating unburned components in the black smoke before it is discharged outdoors. This improves combustion efficiency and purifies the air. In this high-efficiency combustion furnace, the constricted guide tube 22 prevents the smoke from being directly discharged after combustion, allowing it to remain within the inner cavity of the inner furnace cylinder body 21 for a period of time. This provides sufficient time for the smoke to undergo secondary combustion and gasification within the guide tube 22.

[0034] When using this combustion furnace for cooking or baking food in the oven 6, coal or wood is fed in through the feeding cylinder 241. The coal or wood is then piled on the grate 111 through the discharge port 24. After feeding is complete, the feeding door 242 of the feeding cylinder 241 must be closed, and the first air inlet 1211 and the second air inlet 1511 must be opened. The size of the first air inlet 1211 and the second air inlet 1511 can be adjusted as needed. Outside air enters the first air inlet chamber 3 through the first air inlet 121. Through the upward suction of the vertical inner furnace cylinder 2, the air enters the inner furnace cylinder 2 through the grate 111. The fuel burns inside the inner furnace cylinder 2 and is discharged outdoors through the exhaust chamber 4 and exhaust pipe 141. At the same time, outside air enters the second air intake chamber 5 through the second air intake hole 1511 of the second air intake door 151. Through the gasification and combustion aid of the first combustion aid hole 231, the second combustion aid hole 232 and the third combustion aid hole 233, the fuel is fully gasified and burned, so that the flame temperature at the top of the furnace plate 17 is the highest, which improves the thermal efficiency of the fuel and reduces the emission of pollutants. The flame in the exhaust chamber 4 heats the cookware on the top of the furnace plate 17. The exhaust pipe 141 absorbs the heat of the flue gas and conducts it to the oven 6, which can bake the food in the oven 6, further improving the utilization rate of fuel.

[0035] When the furnace is used for heating, the feeding door 242 of the feeding cylinder 241 is closed, and the first air inlet hole 1211 on the first air inlet door 121 is kept as small as possible to prevent the fuel from extinguishing due to lack of oxygen. The second air inlet hole 1511 of the second air inlet door 151 is opened, and outside air enters the second air inlet chamber 5 through the second air inlet hole 1511. The air enters the inner furnace cylinder 2 through the first combustion aid hole 231, the second combustion aid hole 232, and the third combustion aid hole 233 to supply oxygen for fuel combustion. By controlling the size of the second air inlet hole 1511 of the second air inlet door 151, the necked guide cylinder 22 allows most of the fuel combustion to take place in the inner furnace cylinder body 21. In other words, air mainly supplies oxygen to the fuel combustion in the inner furnace body 21 through the first combustion-supporting hole 231 and the second combustion-supporting hole 232. The fuel stays in the inner furnace body 21 for a longer time after complete combustion. The heat generated by combustion is conducted to the outer wall of the furnace body 1 through the second air inlet 5 and dissipated into the room, thereby achieving the purpose of heating. After the fuel is fully burned in the inner furnace body 21, it is discharged outdoors through the guide tube 22, the flue gas chamber 4 and the flue gas 141. This method makes less of the heat from fuel combustion emitted through the flue gas 141, and more of the heat transferred to the outer wall of the furnace body 1 and dissipated into the room through conduction, thereby achieving the purpose of heating.

[0036] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A high-efficiency combustion furnace, comprising a furnace body, wherein the interior of the furnace body is a hollow cylindrical shape, characterized in that, The furnace body contains an inner furnace cylinder, which includes an inner furnace cylinder body and a guide cylinder. The top of the inner furnace cylinder body is necked to form the guide cylinder. A lower baffle is circumferentially sealed between the bottom of the inner furnace cylinder body and the inner wall of the furnace body. A first air inlet cavity is formed between the lower baffle and the bottom plate of the furnace body. A first air inlet communicating with the first air inlet cavity is provided on the bottom side wall of the furnace body, and a first air inlet door is provided at the first air inlet. An upper baffle is circumferentially sealed between the top of the guide cylinder and the side wall of the furnace body. The upper baffle is circumferentially sealed between the top of the guide cylinder and the top plate of the furnace body. A flue gas chamber is formed, and the side wall of the furnace body is provided with a flue gas outlet communicating with the flue gas chamber; the inner furnace cylinder body, guide cylinder, upper baffle, lower baffle and furnace body form a second air inlet chamber, and the side wall of the furnace body above the lower baffle is provided with a second air inlet communicating with the second air inlet chamber, and a second air inlet door is provided at the second air inlet; the side wall of the inner furnace cylinder body is provided with a discharge port communicating with the inner cavity of the inner furnace cylinder body, and the discharge port is connected to a feeding cylinder extending out of the furnace body; the side wall of the inner furnace cylinder is provided with combustion-supporting holes; the top of the furnace body is matched with a furnace plate, and the bottom of the inner furnace cylinder body is provided with a grate.

2. The high-efficiency combustion furnace according to claim 1, characterized in that, The combustion-supporting holes include a first combustion-supporting hole and a second combustion-supporting hole located in the middle and upper part of the inner furnace cylinder body, and a third combustion-supporting hole located on the guide tube; the first and second combustion-supporting holes are arranged in several circumferential directions along the side wall of the inner furnace cylinder body; the third combustion-supporting hole is arranged in several circumferential directions along the side wall of the guide tube.

3. The high-efficiency combustion furnace according to claim 2, characterized in that, The first combustion-supporting hole is in one row, and the second combustion-supporting hole is distributed in 2-5 rows at intervals along the top of the inner furnace cylinder body.

4. The high-efficiency combustion furnace according to claim 2, characterized in that, The third combustion-supporting holes are evenly distributed in several rows along the top and bottom of the guide tube.

5. The high-efficiency combustion furnace according to claim 1, characterized in that, The first air inlet door is provided with a first air inlet hole, and a first adjusting plate is provided at the first air inlet hole to adjust the size of the first air inlet hole.

6. The high-efficiency combustion furnace according to claim 5, characterized in that, The first air inlet chamber is provided with an ash hopper that is used to collect the ash after combustion, which is opposite to the first air inlet. The ash hopper can slide out of the first air inlet, and the first air inlet door is provided on the ash hopper corresponding to the first air inlet.

7. The high-efficiency combustion furnace according to claim 1, characterized in that, The second air inlet door is provided with a second air inlet hole, and a second adjusting plate is provided at the second air inlet hole to adjust the size of the second air inlet hole.

8. The high-efficiency combustion furnace according to claim 1, characterized in that, The exhaust port is connected to the exhaust pipe, and the side wall of the exhaust pipe is fitted and connected to the oven.

9. The high-efficiency combustion furnace according to claim 1, characterized in that, The feeding cylinder is inclined upwards and is sealed to the side wall of the furnace body. The inlet of the feeding cylinder is provided with a feeding door that can be opened or closed.

10. The high-efficiency combustion furnace according to claim 1, characterized in that, The side wall of the furnace body is provided with an observation port that communicates with the flue gas chamber, and the observation port is sealed with fire-resistant glass.

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