Heating stove

Abstract

The utility model relates to a heating furnace, which belongs to the technical field of heating equipment, and comprises a furnace shell and a hearth, the hearth is arranged in the furnace shell, the top of the furnace shell is communicated with a smoke outlet pipe, and the vertical outer wall of the furnace shell is communicated with an air feeder; an inner flue and an outer flue are arranged in the furnace shell, the inner flue and the outer flue are annular and are arranged between the hearth and the furnace shell at intervals, a distance exists between the top of the inner flue and the inner wall of the top of the furnace shell and between the top of the outer flue and the inner wall of the top of the furnace shell, and the inner flue is located between the outer flue and the hearth; a first communicating pipe for mutual communication is arranged between the top of the inner flue and the top of the hearth, and the bottom of the inner flue is communicated with the bottom of the outer flue; a second communicating pipe for mutual communication is arranged between the top of the outer flue and the smoke outlet pipe; the inner flue is provided with air holes used for communicating spaces on the two sides of the inner flue. The position where the air feeder communicates with the furnace shell is higher than the top of the inner flue and the top of the outer flue. The energy-saving furnace has the effect of reducing wind resistance to air flowing in the furnace shell.

Description

Technical Field

[0001] The present application relates to the technical field of heating equipment, and in particular to a heating furnace. Background Art

[0002] Currently, the biomass-burning heating furnace is a heating device that uses biomass as fuel.

[0003] The heating furnace burns biomass inside, and a flue is set inside the heating furnace to discharge the generated smoke. A fan is used to ventilate the interior of the heating furnace. The wind entering the heating furnace comes into contact with the flue and is heated, and finally flows into the room, forming heating for the room.

[0004] A cavity will be formed inside the heating furnace between the flues, and also between the flue and the inner wall of the heating furnace. The cavities are connected by connecting pipes. The fan supplies air to the inside of the heating furnace, and the air flows between adjacent cavities through the connecting pipes. The overall flow path is S-shaped.

[0005] In practical applications, since the flow path of wind in the heating furnace is S-shaped and the reciprocating bending flow path causes the wind flow to have a larger wind resistance than the straight-line flow. Utility Model Content

[0006] In order to reduce the wind resistance to air flow in the furnace shell and improve the heating efficiency of the heating furnace, the present application provides a heating furnace.

[0007] The heating furnace provided in this application adopts the following technical solution:

[0008] A heating furnace comprises a furnace shell and a furnace, the furnace chamber is arranged inside the furnace shell, a smoke outlet pipe is connected to the top of the furnace shell, a blower is fixed on the vertical outer wall of the furnace shell, and the blower is connected to the inside of the furnace shell; an inner flue and an outer flue are arranged in the furnace shell, the inner flue and the outer flue are both annular and arranged between the furnace chamber and the furnace shell at intervals, there is a distance between the top of the inner flue and the outer flue and the inner wall of the furnace shell top, and the inner flue is located between the outer flue and the furnace; a first connecting pipe for connecting with each other is arranged between the top of the inner flue and the top of the furnace chamber, and the bottom of the inner flue is connected with the bottom of the outer flue; a second connecting pipe for connecting with each other is arranged between the top of the outer flue and the smoke outlet pipe; an air vent for connecting the spaces on both sides of the inner flue is opened on the inner flue; the position of the connection point between the blower and the furnace shell is higher than the top of the inner flue and the top of the outer flue.

[0009] By adopting the above technical solution, the blower supplies air into the furnace, and the wind moves downward from the top of the furnace. Since the tops between the inner flue and the outer flue are open, and air holes are provided on the inner flue, the overall movement state of the wind sent into the furnace is from top to bottom. Compared with the previous S-shaped movement state, the wind resistance is reduced and the heating efficiency is improved.

[0010] Optionally, a first air distribution plate and a second air distribution plate are provided in the furnace shell, wherein the end of the first air distribution plate close to the ground is fixed at the top of the inner flue, and there is a distance between the end of the first air distribution plate away from the ground and the inner wall of the top of the furnace shell; the end of the second air distribution plate close to the ground is fixed at the top of the outer flue, and there is a distance between the end of the second air distribution plate away from the ground and the inner wall of the top of the furnace shell.

[0011] By adopting the above technical solution, the air distribution plate guides the wind delivered by the blower, so that part of the wind enters between the inner flue and the outer flue, and between the inner flue and the furnace, and the wind delivered by the blower is divided into multiple streams, thereby improving the heating efficiency of the wind.

[0012] Optionally, the first air distribution plate and the second air distribution plate are both inclined, and the inclination direction is from bottom to top along a direction close to the vertical center line of the furnace shell.

[0013] By adopting the above technical solution, the first air distribution plate and the second air distribution plate are tilted, so that the wind blown out by the blower can be guided better, which plays a role of further guiding and limiting.

[0014] Optionally, the fixing point of the first air distribution plate and the inner flue is located at the top end surface of the inner flue close to the edge of the furnace; the fixing point of the second air distribution plate and the outer flue is located at the top end surface of the outer flue close to the edge of the furnace.

[0015] By adopting the above technical scheme, the joint between the first air distribution plate and the inner wall of the inner flue is made into a smooth joint surface, and the joint between the second air distribution plate and the inner wall of the outer flue is also made into a flow joint surface, thereby reducing the wind resistance of the wind flowing between the inner flue and the outer flue, and the wind between the inner flue and the furnace.

[0016] Optionally, the connection point between the blower and the furnace shell is defined as an air inlet, and the height of the end of the first air distribution plate away from the ground and the height of the end of the second air distribution plate away from the ground do not exceed 9\10 of the height of the air inlet.

[0017] By adopting the above technical solution, the restriction on the height of the first air distributor plate and the second air distributor plate avoids the negative effect of increased wind resistance caused by setting the height too high. If the height is too low, it will cause uneven air distribution but still have the effect of air distribution.

[0018] Optionally, the distance between the two ends of the first air distribution plate and the second air distribution plate in their respective length directions is not less than the width of the air inlet.

[0019] By adopting the above technical solution, the obstruction to the blower when injecting air between the inner flue and the outer flue and between the inner flue and the furnace is reduced.

[0020] Optionally, the air inlet is oriented directly between two ends of the first air distribution plate.

[0021] By adopting the above technical solution, the blower can more smoothly deliver air between the inner flue and the outer flue and between the inner flue and the furnace.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The first air distribution plate and the second air distribution plate play a guiding and pulling role for the air sent into the furnace shell by the blower, and cooperate with the opening of the air vents to make the air flow in the furnace shell in a straight line from top to bottom, which reduces the wind resistance and improves the heating efficiency of the heating furnace;

[0024] 2. The height, installation position and shape of the first air distribution plate and the second air distribution plate can reduce wind resistance and guide the air in the furnace shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0026] Figure 2 It is a partial structural cross-sectional view showing the positions of the first air distribution plate and the second air distribution plate;

[0027] Figure 3 It is a vertical structural cross-sectional view of an embodiment of the present application.

[0028] In the figure, 1, furnace shell; 11, furnace; 12, smoke outlet pipe; 13, blower; 14, air outlet; 15, first connecting pipe; 16, second connecting pipe; 2, inner flue; 21, first air distribution plate; 22, air vent; 3, outer flue; 31, second air distribution plate; 4, upper fire viewing tube; 5, lower fire viewing tube. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-Figure 3 This application is described in further detail.

[0030] The embodiment of the present application discloses a heating furnace.

[0031] refer to Figure 1 , Figure 2 and Figure 3A heating furnace includes a furnace shell 1, which is arranged vertically, and a smoke outlet pipe 12 is connected to the top of the furnace shell 1. An air inlet is arranged on the vertical outer wall of the furnace shell 1, and the air inlet is connected to the inside of the furnace shell 1 and the connecting point is defined as an air inlet. An air outlet 14 is arranged at the bottom of the vertical outer wall of the furnace shell 1. An inner flue 2 and an outer flue 3 are arranged in the furnace shell 1, and there is a gap between the inner flue 2 and the outer flue 3. The air sent into the furnace 11 by the air blower 13 flows from top to bottom from between the inner flue 2 and the outer flue 3 to the air outlet 14, ensuring the smoothness of air flow.

[0032] refer to Figure 1 , Figure 2 and Figure 3 The inner flue 2 and the outer flue 3 are both annular, the inner flue 2 is located between the outer flue 3 and the furnace 11, there are gaps between the furnace 11 and the inner flue 2, between the inner flue 2 and the outer flue 3, and between the outer flue 3 and the inner wall of the furnace shell 1, and only the bottom of the inner flue 2 is connected to the bottom of the outer flue 3 to block the bottom of the gap between the inner flue 2 and the outer flue 3, and the bottom of the inner flue 2 is connected to the bottom of the outer flue 3. A first connecting pipe 15 and a second connecting pipe 16 are arranged in the furnace shell 1, one end of the first connecting pipe 15 is connected to the top of the furnace 11, and the other end is connected to the inner flue 2, and one end of the second connecting pipe 16 is connected to the top of the outer flue 3, and the other end is connected to one end of the smoke outlet pipe 12 that penetrates into the furnace shell 1. The furnace shell 1 is provided with an upper fire-viewing tube 4 and a lower fire-viewing tube 5. One end of the upper fire-viewing tube 4 penetrates into the furnace shell 1 and communicates with the interior of the outer flue 3. The lower fire-viewing tube 5 is located below the upper fire-viewing tube 4 and one end of the lower fire-viewing tube 5 penetrates into the furnace shell 1 and the outer flue 3 and communicates with the interior of the inner flue 2. The inner flue 2 is provided with an air hole 22, which communicates with the space on both sides of the inner flue 2.

[0033] refer to Figure 1 , Figure 2 and Figure 3 , a second air distribution plate 31 is fixed on the top of the outer flue 3, and a first air distribution plate 21 is fixed on the top of the inner flue 2. The bottom of the first air distribution plate 21 is fixed to the inner flue 2 at the edge of the top end face of the inner flue 2 close to the furnace 11, that is, the side wall of the first air distribution plate 21 close to the furnace 11 and the side wall of the inner flue 2 close to the furnace 11 are connected to each other in a smooth surface, and there is no misalignment. Similarly, the bottom of the second air distribution plate 31 is fixed to the outer flue 3 at the edge of the top end face of the outer flue 3 close to the furnace 11, that is, the side wall of the second air distribution plate 31 close to the furnace 11 and the side wall of the outer flue 3 close to the furnace 11 are connected to each other in a smooth surface, and there is no misalignment.

[0034] refer to Figure 2 and Figure 3, the first air distribution plate 21 and the second air distribution plate 31 are both inclined, and the inclination direction is inclined from bottom to top toward the vertical center line of the furnace shell 1, that is, the first air distribution plate 21 and the second air distribution plate 31 are overall in a bundle shape. The connection point between the blower 13 and the furnace shell 1 is defined as the air inlet, and the position of the air inlet is higher than the top of the inner flue 2 and the outer flue 3. There is a distance between the top of the first air distribution plate 21 and the top of the second air distribution plate 31 and the inner wall of the top of the furnace shell 1, and the height does not exceed 9\10 of the highest height of the air inlet. The distance between the two ends of the first air distribution plate 21 and the second air distribution plate 31 in the length direction is not less than the width of the air inlet, and the gap between the two ends of the first air distribution plate 21 and the second air distribution plate 31 in the length direction is set directly opposite the air inlet.

[0035] The implementation principle of a heating furnace in an embodiment of the present application is as follows: the blower 13 supplies air into the furnace shell 1, and the air entering the furnace shell 1 will be guided downward by the first air distribution plate 21 and the second air distribution plate 31 into between the inner flue 2 and the outer flue 3 and between the inner flue 2 and the outer wall of the furnace 11. A part of the air will automatically flow between the outer flue 3 and the inner wall of the furnace shell 1 and flow downward to the air outlet 14. The air entering between the inner flue 2 and the outer flue 3 flows downward through the air vents 22 and converges with the air between the inner flue 2 and the furnace 11 before flowing downward to the air outlet 14 again. The overall flow state of the air in the furnace shell 1 is from top to bottom, which reduces the obstruction to the air flow and ensures the heating efficiency of the heating furnace.

[0036] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A heating furnace, comprising a furnace shell (1) and a furnace chamber (11), wherein the furnace chamber (11) is arranged inside the furnace shell (1), and a smoke outlet pipe (12) is connected to the top of the furnace shell (1), characterized in that: A blower (13) is fixed on the vertical outer wall of the furnace shell (1), and the blower (13) is connected to the inside of the furnace shell (1); an inner flue (2) and an outer flue (3) are arranged in the furnace shell (1); the inner flue (2) and the outer flue (3) are both annular and arranged at intervals between the furnace chamber (11) and the furnace shell (1); there is a distance between the top of the inner flue (2) and the top of the outer flue (3) and the inner wall of the furnace shell (1); the inner flue (2) is located between the outer flue (3) and the furnace chamber (11); the inner flue (2) A first connecting pipe (15) for communicating with each other is provided between the top and the top of the furnace (11); the bottom of the inner flue (2) is connected with the bottom of the outer flue (3); a second connecting pipe (16) for communicating with each other is provided between the top of the outer flue (3) and the smoke outlet pipe (12); an air vent (22) for communicating with spaces on both sides of the inner flue (2) is provided on the inner flue (2); and the position of the connection point between the blower (13) and the furnace shell (1) is higher than the top of the inner flue (2) and the top of the outer flue (3).

2. A heating furnace according to claim 1, characterized in that: A first air distribution plate (21) and a second air distribution plate (31) are arranged in the furnace shell (1); an end of the first air distribution plate (21) close to the ground is fixed to the top of the inner flue (2), and an end of the first air distribution plate (21) away from the ground is spaced apart from the inner wall of the top of the furnace shell (1); an end of the second air distribution plate (31) close to the ground is fixed to the top of the outer flue (3), and an end of the second air distribution plate (31) away from the ground is spaced apart from the inner wall of the top of the furnace shell (1).

3. A heating furnace according to claim 2, characterized in that: The first air distribution plate (21) and the second air distribution plate (31) are both arranged to be inclined, and the inclination direction is from bottom to top along a direction close to the vertical center line of the furnace shell (1).

4. A heating furnace according to claim 3, characterized in that: The fixing point of the first air distribution plate (21) and the inner flue (2) is located at the edge of the top end surface of the inner flue (2) close to the furnace (11); and the fixing point of the second air distribution plate (31) and the outer flue (3) is located at the edge of the top end surface of the outer flue (3) close to the furnace (11).

5. A heating furnace according to claim 1, characterized in that: The point where the air blower (13) is connected to the furnace shell (1) is defined as an air inlet, and the height of the end of the first air distribution plate (21) away from the ground and the height of the end of the second air distribution plate (31) away from the ground do not exceed 9\10 of the height of the air inlet.

6. A heating furnace according to claim 5, characterized in that: The distance between the two ends of the first air distribution plate (21) and the second air distribution plate (31) in their respective length directions is not less than the width of the air inlet.

7. A heating furnace according to claim 6, characterized in that: The air inlet is oriented so as to face and be arranged between the two ends of the first air distribution plate (21).

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