A type of heating stove

Abstract

This utility model discloses a heating stove, belonging to the field of heating equipment, including a main combustion chamber and a secondary combustion chamber. A second air inlet structure is provided in the upper part of the main combustion chamber, which provides oxygen for the combustion of fuel within the main combustion chamber. A flue is provided between the main and secondary combustion chambers, and a third air inlet structure is provided at the flue, which provides oxygen for the flue gas produced by fuel combustion. The second air inlet structure of this utility model can provide oxygen for the combustion of fuel within the main combustion chamber, reducing the amount of flue gas produced in the main combustion chamber. The third air inlet structure also allows for more complete combustion of the flue gas, making full use of the flue gas produced in the main combustion chamber and further reducing emissions, enabling the heating stove to achieve smokeless heating.

Description

Technical Field

[0001] This utility model relates to the field of heating equipment, specifically to a heating stove. Background Technology

[0002] A heating stove is a common heating method used in Mongolian yurts. It offers advantages such as good heat dissipation and relatively cleanliness. Common fuels for heating stoves include dried cow dung and very dry hay. Besides heating, the stove can also be used for cooking and boiling water, making it highly practical and convenient.

[0003] Since the fuel for the heating stove is mainly cow dung and hay, incomplete combustion is common, producing a lot of smoke. If used in a yurt for a long time, the smoke will reduce the comfort of living, harm the health of the residents, and reduce the utilization rate of heat energy. Utility Model Content

[0004] The purpose of this invention is to provide a heating stove that solves the problems of incomplete fuel combustion, resulting in a large amount of flue gas, and low thermal energy utilization in existing heating stoves.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a heating stove, comprising a main combustion chamber and a secondary combustion chamber, wherein a second air inlet structure is provided in the upper part of the main combustion chamber, the second air inlet structure being used to provide oxygen required for combustion of fuel in the main combustion chamber; a flue is provided between the main combustion chamber and the secondary combustion chamber, and a third air inlet structure is provided at the flue, the third air inlet structure being used to provide oxygen required for combustion of flue gas generated by fuel combustion.

[0006] Preferably, the third air intake structure includes a gap, which is disposed in the main combustion chamber or the auxiliary combustion chamber. The bottom of the gap is connected to the external environment of the main combustion chamber or the auxiliary combustion chamber, and the top of the gap is provided with a plurality of first exhaust holes distributed along the length of the flue.

[0007] Preferably, when the gap is set in the main combustion chamber, an inclined guide surface is provided on the top of the gap away from the auxiliary combustion chamber, and a plurality of second exhaust holes are provided on the inclined guide surface along the length of the flue.

[0008] Preferably, the second air intake structure includes vertical pipes arranged on both sides of the main combustion chamber, the bottom of the vertical pipes being in communication with the external environment of the main combustion chamber, a horizontal air duct being provided in the upper part of the main combustion chamber, the two ends of the air duct being in communication with the corresponding vertical pipes, and a plurality of third-row air holes being provided on the air duct.

[0009] Preferably, the airflow direction of the air discharged from the third exhaust vent is towards the center of the main combustion chamber and inclined downwards.

[0010] Preferably, the auxiliary combustion chamber is provided with a baffle, the flue is located above one side of the baffle, and the baffle is provided with a through hole; the baffle is inclined, and the height of the other side of the baffle is greater than the height of the upper edge of the flue.

[0011] Preferably, a slag collection chamber is provided below the main combustion chamber, and the main combustion chamber is connected to the slag collection chamber. A slag collection box that can be removed from the slag collection chamber is provided in the slag collection chamber. A first air inlet structure is provided on the side wall of the slag collection box located outside the slag collection chamber. The first air inlet structure is an adjustable air inlet structure.

[0012] Preferably, a feed port is provided on one side of the main combustion chamber, and a baffle is hinged to the outside of the feed port.

[0013] Preferably, the height of the auxiliary combustion chamber is greater than the height of the main combustion chamber, the top of the main combustion chamber is provided with a first opening, and the top of the auxiliary combustion chamber is provided with at least two second openings.

[0014] Preferably, it also includes an exhaust pipe, which is connected to the auxiliary combustion chamber.

[0015] The beneficial effects of this utility model are:

[0016] This utility model's heating stove consists of two combustion chambers: a main combustion chamber and a secondary combustion chamber. The fuel is burned in the main combustion chamber, and the resulting flue gas enters the secondary combustion chamber. A second air intake structure is located at the upper part of the main combustion chamber, providing oxygen for the fuel combustion and reducing the amount of flue gas produced. Furthermore, a third air intake structure is located at the flue, providing oxygen for the flue gas, allowing it to burn in the secondary combustion chamber. Using the flue gas as fuel in the secondary combustion chamber results in a more vigorous flame, providing a greater amount of heat and improving the thermal energy utilization rate. The third air intake structure also ensures more complete combustion, fully utilizing the flue gas produced in the main combustion chamber and reducing emissions, achieving smokeless heating. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 A schematic diagram of the overall structure of a heating stove provided for one embodiment of this utility model;

[0019] Figure 2A cross-sectional view of a heating stove provided according to one embodiment of the present utility model;

[0020] Figure 3 for Figure 2 Enlarged view of part A in the structure shown;

[0021] Figure 4 for Figure 1 Enlarged view of part B in the structure shown.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Main combustion chamber; 2. Auxiliary combustion chamber; 3. Flue; 4. Gap; 5. First exhaust vent; 6. Inclined guide surface; 7. Second exhaust vent; 8. Riser; 9. Air duct; 10. Third exhaust vent; 11. Baffle; 12. Through hole; 13. Slag collection chamber; 14. Slag collection box; 15. Feed port; 16. Baffle; 17. First opening; 18. Second opening; 19. Exhaust pipe; 20. Turntable; 21. First air inlet; 22. Second air inlet; 23. Handle. Detailed Implementation

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.

[0025] Example 1

[0026] Figure 1 This is a schematic diagram of the overall structure of a heating stove provided according to one embodiment of the present invention. Figure 1 As shown, this embodiment provides a heating stove, including a main combustion chamber 1 and an auxiliary combustion chamber 2. The heating stove of this embodiment is made of metal materials such as iron or aluminum. The heating stove consists of an inverted U-shaped base and side plates arranged around the base. The side plates are then enclosed by a cover plate. The four side plates and the cover plate together form a combustion area. A dividing plate is installed near the middle of the base, which divides the combustion area into two parts, resulting in the main combustion chamber 1 and the auxiliary combustion chamber 2. A strip-shaped hole is opened on the dividing plate to form a flue 3 between the main combustion chamber 1 and the auxiliary combustion chamber 2. After the fuel in the main combustion chamber 1 is burned, the flame generated by the combustion can enter the auxiliary combustion chamber 2 through the flue 3, and the flue gas generated at the same time also enters the auxiliary combustion chamber 2.

[0027] The upper part of the main combustion chamber 1 is provided with a second air intake structure, which is used to provide oxygen for the combustion of fuel in the main combustion chamber 1. The fuel in this embodiment includes, but is not limited to, dried cow dung and hay. The second air intake structure can adopt an active air intake method, for example, by installing an air pump outside the heating furnace, connecting the output end of the air pump to an air pipe, and extending the air pipe into the main combustion chamber to provide air (oxygen) for the combustion of fuel in the main combustion chamber.

[0028] In this embodiment, since a second air intake structure is provided in the upper part of the main combustion chamber 1, the second air intake structure can provide the fuel in the main combustion chamber 1 with the oxygen required for combustion, thereby reducing the amount of flue gas generated in the main combustion chamber 1.

[0029] A flue 3 is provided between the main combustion chamber 1 and the auxiliary combustion chamber 2. A third air intake structure is provided at the flue 3. The third air intake structure is used to provide oxygen required for combustion of the flue gas generated by fuel combustion. The third air intake structure can also adopt an active air intake method, which is the same as the second air intake structure, to provide air (oxygen) for the combustion of flue gas in the auxiliary combustion chamber.

[0030] In this embodiment, the third air intake structure can provide the oxygen required for combustion of the flue gas generated by fuel combustion, so that the flue gas can be burned in the auxiliary combustion chamber 2. Using the flue gas as fuel in the auxiliary combustion chamber 2 makes the flame in the auxiliary combustion chamber 2 burn more vigorously, provides a large amount of heat to the auxiliary combustion chamber 2, and improves the thermal energy utilization rate of combustion. In addition, the third air intake structure can also make the flue gas burn more completely, making full use of the flue gas generated in the main combustion chamber 1, and further reducing the emission of flue gas, so that the heating furnace can achieve smokeless heating.

[0031] Example 2

[0032] This embodiment is based on Embodiment 1, such as... Figure 1 and Figure 2 As shown, the heating furnace also includes a flue pipe 19, which is connected to the auxiliary combustion chamber 2. The flue pipe 19 is used to discharge the hot gas flow from the auxiliary combustion chamber 2, which contains gases such as carbon dioxide. In this embodiment, the auxiliary combustion chamber 2 fully combusts the flue gas, which can significantly reduce the emission of flue gas such as carbon monoxide and particulate matter, improve the comfort of using the heating furnace, and reduce the impact on the health of the residents.

[0033] In this embodiment, in order to enable the flue gas to enter the auxiliary combustion chamber 2 quickly, the height of the auxiliary combustion chamber 2 is greater than the height of the main combustion chamber 1, so that the hot airflow containing flue gas generated in the main combustion chamber 1 has an upward trend when it flows into the auxiliary combustion chamber 2 (the density of hot air is lower than that of cold air, thus forming an airflow), which can make the flow rate of the hot airflow faster.

[0034] Furthermore, the auxiliary combustion chamber 2 is equipped with a baffle 11, such as... Figure 2 As shown, the flue 3 is located above one side of the partition 11, and the partition 11 is provided with a through hole 12; the partition 11 is inclined, and the height of the other side of the partition 11 is greater than the height of the upper edge of the flue 3.

[0035] Therefore, the baffle 11 can increase the upward stroke of the hot airflow, making the flow rate of the flue gas hot airflow between the main combustion chamber 1 and the auxiliary combustion chamber 2 faster, which is beneficial for drawing in air (oxygen) from the third air intake structure.

[0036] Example 3

[0037] This embodiment is based on embodiment two, such as... Figure 1 As shown, a first opening 17 is provided at the top of the main combustion chamber 1, and at least two second openings 18 are provided at the top of the auxiliary combustion chamber 2. Pots, kettles, or other appliances can be placed on the first opening 17 or the second opening 18, allowing the heater to be used for cooking or boiling water. When no appliances are placed on the first opening 17 or the second opening 18, a cover plate can be used to cover the first opening 17 or the second opening 18, at which point the heater is mainly used for heating.

[0038] Example 4

[0039] Since active air intake requires the deployment of an air pump, and the air pump requires the deployment of control circuitry, active air intake increases the cost of the heating furnace. To simplify the third air intake structure, this embodiment, based on embodiment two, as follows... Figure 2 and Figure 3 As shown, the third air intake structure is a gap 4 located between the main combustion chamber 1 and the auxiliary combustion chamber 2. The bottom of the gap 4 is connected to the external environment, and the top of the gap 4 is provided with several first exhaust holes 5 connected to the flue 3. In this embodiment, the gap 4 can be an inner cavity set within a partition plate, with multiple air holes at the bottom of the partition plate to allow the gap 4 to communicate with the external environment; alternatively, the gap can be formed by deploying an L-shaped plate on one side of the main combustion chamber, with the top of the plate slightly lower than the lower edge of the flue, and the upper space of the plate also being part of the flue.

[0040] The bottom of the board is welded to the base, the two sides of the board are welded to two side plates respectively, and the top of the board is welded to the dividing plate. At this time, the space enclosed by the two side plates, the base, and the dividing plate forms a gap 4. At this time, the air hole is set on the base so that the gap 4 can communicate with the external environment. The first row of air holes 5 is set on the top of the L-shaped board.

[0041] In this embodiment, when the fuel is burning, a hot airflow is formed above the first exhaust vent 5. Because the hot airflow is fast, a negative pressure is formed at the top of the gap 4, which draws in outside air and then discharges it into the flue 3 to mix with the hot airflow in the flue 3. This structure constitutes a passive air intake method, which relies on the airflow to draw in oxygen. This structure is simpler and helps to reduce the production cost of the heating furnace.

[0042] Because the hot air stream contains flue gas, the flue gas mixes with air (oxygen), which enables the flue gas to burn, thereby making the flame in the auxiliary combustion chamber 2 burn more vigorously and providing a large amount of heat to the auxiliary combustion chamber 2.

[0043] As a further optimization of this embodiment, since the hot airflow containing flue gas flows obliquely upward into the auxiliary combustion chamber 2, and since the smoke inlet side of the flue 3 is a right angle, it will increase the resistance to the hot airflow; therefore, an inclined guide surface 6 is provided on the smoke inlet side of the flue 3, and a plurality of second exhaust holes 7 connected to the gap 4 are provided on the inclined guide surface 6.

[0044] In this embodiment, the inclined guide surface 6 can be formed by a chamfer on the right-angled edge of the L-shaped plate. The chamfered surface constitutes the inclined guide surface 6, which guides the hot airflow and avoids the right-angled edge generating significant resistance to the hot airflow. This embodiment also provides a second exhaust hole 7 on the inclined guide surface 6. When the hot airflow passes over the L-shaped plate, a portion of the air discharged from the second exhaust hole 7 mixes with the hot airflow first, and then a portion of the air discharged from the first exhaust hole 5 mixes with the hot airflow. This improves the uniformity of the air-hot airflow mixture, resulting in more complete combustion of the flue gas in the hot airflow.

[0045] Example 5

[0046] The second air intake structure, when using an active air intake method, will also increase the cost of the heating furnace. Therefore, this embodiment, based on embodiment four, such as... Figure 2 and Figure 3 As shown, the second air intake structure includes vertical pipes 8 arranged on both sides of the main combustion chamber 1. The bottom of the vertical pipes 8 is connected to the external environment of the main combustion chamber 1. A horizontal air duct 9 is provided in the upper part of the main combustion chamber 1. The two ends of the air duct 9 are respectively connected to the two vertical pipes 8. Several third-row air holes 10 are provided on the air duct 9.

[0047] In this embodiment, the riser 8 can be deployed inside the main combustion chamber 1 or outside the main combustion chamber 1. In this embodiment, it is preferred to deploy the riser 8 outside the main combustion chamber 1, so that the space inside the main combustion chamber 1 can be larger. The riser 8 can also be integrally formed with the side plate. The bottom of the riser 8 can penetrate the base. The riser 8 can also be connected with the gap 4 in embodiment four to realize the connection between the riser 8 and the external environment.

[0048] In this embodiment, during combustion in the main combustion chamber 1, the volume of the flame typically decreases gradually in the vertical direction, and the combustion of the flame also requires the consumption of oxygen. Therefore, in the space located in the upper middle part of the flame, oxygen is consumed, and this part of the space forms a negative pressure, which causes the air duct 9 to discharge air (oxygen), making the flame burn more vigorously and thus reducing the generation of flue gas.

[0049] As a further optimization of this embodiment, the airflow direction of the air discharged from the third exhaust vent 10 is towards the middle of the main combustion chamber 1 and inclined downward. The downward airflow can come into contact with the flue gas generated by combustion more quickly, thereby making the flue gas in the main combustion chamber 1 burn quickly; and flames can also be generated in the direction of airflow, making the flame distribution in the combustion chamber more uniform and the heat generated more uniform.

[0050] Example 6

[0051] Based on Example 3, such as... Figure 2 and Figure 3 As shown, a slag collection chamber 13 is provided below the main combustion chamber 1. The main combustion chamber 1 and the slag collection chamber 13 are connected. A slag collection box 14 that can be removed from the slag collection chamber 13 is provided inside the slag collection chamber 13. In this embodiment, the slag collection chamber 13 can be a drawer-type structure, deployed below the main combustion chamber 1. A grid-like structure can be set at the bottom of the main combustion chamber 1, with fuel placed on the grid and the slag falling into the slag collection box 14 after combustion. Alternatively, an opening can be opened at the bottom of the main combustion chamber 1, and a combustion net can be placed on the opening for placing fuel.

[0052] In this embodiment, a handle 23 is provided on the outer side of the slag collection box 14 to facilitate the taking and putting away of the slag collection box 14.

[0053] As a further optimization of this embodiment, a first air inlet structure is provided on the side wall of the slag collection box 14 located outside the slag collection chamber 13. The first air inlet structure is an adjustable air inlet structure.

[0054] In this embodiment, when the fuel is burning, the first air intake structure is opened, and outside air enters the ash collection box 14 through the first air intake structure, and then comes into contact with the fuel through the combustion net to provide the main source of oxygen for the fuel combustion.

[0055] In this embodiment, as Figure 4As shown, the first air intake structure includes a turntable 20 disposed on the outer surface of the ash collection box 14. The rotating shaft of the turntable 20 is rotatably connected to the ash collection box 14. The turntable 20 is provided with multiple first air intake holes 21. Similarly, the ash collection box 14 is provided with multiple second air intake holes 22 corresponding to the first air intake holes 21. When the turntable 20 is rotated, the conduction area of ​​the first air intake holes 21 can be adjusted, thereby adjusting the air intake flow rate. When the flow rate of the first air intake structure is small, the fuel combustion in the main combustion chamber 1 is slower. In the early stage of fuel combustion, more flue gas can be generated, making the combustion in the secondary combustion chamber 2 more vigorous. In the later stage of fuel combustion, the fuel combustion duration can be longer, thereby increasing the heating duration.

[0056] As a further optimization of this embodiment, a feed port 15 is provided on one side of the main combustion chamber 1, and a baffle 16 is hinged to the outside of the feed port 15.

[0057] In this embodiment, the feed port 15 has an inclined structure, which makes it easier to add fuel into the main combustion chamber 1. At the same time, the bottom of the baffle 16 is hinged to the outside of the feed port 15, which makes it easier to add fuel. After the fuel is added, the baffle 16 is covered.

[0058] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A heating stove, comprising a main combustion chamber (1) and a secondary combustion chamber (2), characterized in that, The upper part of the main combustion chamber (1) is provided with a second air intake structure, which is used to provide oxygen required for combustion of fuel in the main combustion chamber (1); a flue (3) is provided between the main combustion chamber (1) and the auxiliary combustion chamber (2), and a third air intake structure is provided at the flue (3), which is used to provide oxygen required for combustion of flue gas generated by fuel combustion.

2. The heating stove according to claim 1, characterized in that, The third air intake structure is a gap (4) set between the main combustion chamber (1) and the auxiliary combustion chamber (2). The bottom of the gap (4) is connected to the external environment, and the top of the gap (4) is provided with several first exhaust holes (5) connected to the flue (3).

3. The heating stove according to claim 2, characterized in that, The flue (3) has an inclined guide surface (6) on the smoke inlet side, and the inclined guide surface (6) has several second exhaust holes (7) that are connected to the gap (4).

4. The heating stove according to claim 1, characterized in that, The second air intake structure includes vertical pipes (8) arranged on both sides of the main combustion chamber (1). The bottom of the vertical pipes (8) is connected to the external environment of the main combustion chamber (1). A horizontal air duct (9) is provided in the upper part of the main combustion chamber (1). The two ends of the air duct (9) are connected to the corresponding vertical pipes (8). Several third-row air holes (10) are provided on the air duct (9).

5. The heating stove according to claim 4, characterized in that, The airflow direction of the third exhaust vent (10) is towards the middle of the main combustion chamber (1) and is inclined downward.

6. The heating stove according to claim 1, characterized in that, The auxiliary combustion chamber (2) is provided with a partition (11), and the flue (3) is located above one side of the partition (11). The partition (11) is provided with a through hole (12). The partition (11) is inclined, and the height of the other side of the partition (11) is greater than the height of the upper edge of the flue (3).

7. The heating stove according to claim 1, characterized in that, Below the main combustion chamber (1) is a slag collection chamber (13), the main combustion chamber (1) is connected to the slag collection chamber (13), the slag collection chamber (13) is provided with a slag collection box (14) that can be taken out from the slag collection chamber (13), and a first air intake structure is provided on the side wall of the slag collection box (14) located outside the slag collection chamber (13), the first air intake structure is an adjustable air intake structure.

8. The heating stove according to claim 1, characterized in that, The main combustion chamber (1) has a feeding port (15) on one side, and a baffle (16) is hinged to the outside of the feeding port (15).

9. The heating stove according to claim 1, characterized in that, The height of the auxiliary combustion chamber (2) is greater than the height of the main combustion chamber (1). The top of the main combustion chamber (1) is provided with a first opening (17), and the top of the auxiliary combustion chamber (2) is provided with at least two second openings (18).

10. The heating stove according to claim 1, characterized in that, It also includes a flue pipe (19) that is connected to the auxiliary combustion chamber (2).

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