Curved tube fire tube double-flame-path heating stove
The design of the curved tube fire tube dual-fire channel heating boiler solves the problem of low heat energy utilization in traditional heating boilers, achieves efficient heat energy exchange and fuel saving, and provides a multi-functional usage mode.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2026-04-03
AI Technical Summary
Traditional heating boilers use a single-fire-channel structure, which results in low thermal energy utilization, incomplete fuel combustion, and increased pollutant emissions.
The design adopts a dual-channel design with curved tubes and fire tubes. By setting fire tubes and curved tubes in the combustion chamber and the reverse heating chamber respectively, the dual-channel reverse heating is achieved, increasing the heat exchange path. Combined with the opening and closing mechanism and components such as heating water pipes and oven, the heat exchange efficiency is improved.
It improves thermal energy utilization, reduces fuel consumption, enhances heating effect, and provides convenient switching between cooking and heating modes.
Smart Images
Figure CN224080243U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heating furnaces, and in particular to a curved tube fire tube double-fire channel heating furnace. Background Technology
[0002] As an important piece of equipment for heating homes and small venues in winter, the thermal efficiency and fuel utilization rate of heating boilers are directly related to the user's operating costs and environmental benefits.
[0003] Traditional boilers generally employ a single-flue combustion structure. After fuel burns in the furnace, the flame and high-temperature flue gas are directly discharged along a single channel. This results in a short heat exchange path, with a large amount of heat energy not being fully transferred to the heated surfaces before being expelled, leading to low thermal efficiency. Furthermore, the single-flue structure easily causes incomplete combustion of fuel, with unburned combustible components escaping with the flue gas, wasting fuel and increasing pollutant emissions. Therefore, to address these issues, a curved-tube fire-tube dual-flue boiler is proposed. Utility Model Content
[0004] This invention provides a curved-tube fire-tube dual-fire-tube heating furnace to solve the technical problem of low thermal energy utilization caused by using a single fire channel.
[0005] This utility model solves the above-mentioned technical problems through the following technical solutions:
[0006] This utility model provides a curved-tube fire-tube dual-fireway heating stove, including a stove body; and further including: a dual-fireway reverse-burning module, the dual-fireway reverse-burning module including a partition plate fixedly installed in the stove body, the stove body being divided into a combustion chamber and a reverse-burning heating chamber by the partition plate; a reverse-burning port is provided between the top of the partition plate and the bottom surface of the top of the stove body, and a fire tube and a curved tube are provided on the partition plate; the two ends of the fire tube are respectively located in the combustion chamber and the reverse-burning heating chamber; an opening and closing mechanism is installed at the fire tube port; a cooking port is opened on the top of the stove body and is located above the combustion chamber, and a first top cover is provided on the cooking port.
[0007] Preferably, the bottom of the furnace body is provided with a bottom groove, the bottom groove is located at the bottom of the combustion chamber, and a double row of furnace bars is provided in the bottom groove; air distribution channels are provided on both sides of the double row of furnace bars.
[0008] Preferably, the bottom of the furnace body is provided with an ash collection shell; a second ventilation opening and a third ventilation opening are provided on one side of the ash collection shell; a base is fixedly installed on the bottom of the ash collection shell; two ash cleaning openings are opened on the front of the ash collection shell, and a first ash receiving cover and a second ash receiving cover are fitted into the two ash cleaning openings, and the first ash receiving cover and the second ash receiving cover extend into the ash collection shell; a first ventilation opening is provided on the first ash receiving cover.
[0009] Preferably, the curved tube is fixedly installed to one side of the partition plate, and the curved tube is located inside the combustion chamber, with the fire tube located above the curved tube.
[0010] Preferably, the interior of the reverse heating chamber is equipped with a heating water pipe and an oven, the port of the oven is located on the front of the oven body, and the port of the oven is equipped with an end cap.
[0011] Preferably, a heating baffle is fixedly installed inside the reverse heating chamber, and the heating baffle and the inner wall of the top of the furnace body form a cavity. An electric heating port connected to the cavity is provided on the front of the furnace body.
[0012] Preferably, the front of the furnace body is provided with a coal feeding port that communicates with the combustion chamber, and the coal feeding port is hinged to a furnace door.
[0013] Preferably, the top of the furnace body is provided with a chimney and an opening, both of which are connected to the top of the reverse heating chamber, and a second top cover is provided on the opening.
[0014] Preferably, the opening and closing mechanism includes a fire-sealing baffle; the fire-sealing baffle is connected to an adjusting component; the adjusting component includes a fixed base fixedly installed to the front of the furnace body, an adjusting handle rotatably installed on the fixed base, the adjusting handle being fixedly connected to the fire-sealing baffle, one end of the adjusting handle being located outside the front of the furnace body, and an external thread being provided on the portion of the adjusting handle located outside the front of the furnace body, a clamping nut being threaded onto the external thread, and the clamping nut being clamped onto the fixed base.
[0015] Preferably, it also includes a double water pan assembly; the double water pan assembly is disposed below the cooking opening, and the double water pan assembly includes a first water pan and a second water pan fixedly installed with the stove body.
[0016] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.
[0017] The positive and progressive effects of this utility model are as follows:
[0018] The aforementioned curved-tube fire-tube dual-fire-channel heating stove addresses the problems of low heat transfer efficiency and high fuel consumption in existing heating stoves that use a single fire channel. By incorporating a dual-fire-channel reverse-burning module, the heat exchange components in the reverse-burning heating chamber can be reverse-burned during daily heating, and the curved tubes can be heated in the combustion chamber, effectively improving heat transfer efficiency, reducing fuel consumption, and enhancing heating performance. Furthermore, an opening and closing mechanism allows switching between cooking and heating modes, providing convenience for daily use and increasing overall applicability. Attached Figure Description
[0019] Figure 1This is a schematic diagram of the overall structure of this utility model.
[0020] Figure 2 This is a schematic diagram of the overall internal structure of this utility model.
[0021] Figure 3 This is a structural schematic diagram of one side of the present invention.
[0022] Figure 4 This is a schematic diagram of the structure of the adjustment component of this utility model.
[0023] Explanation of reference numerals in the attached figures
[0024] 1. Furnace body; 101. Bottom trough; 102. Cooking opening; 2. Ash collection shell; 201. First ash collection hood; 202. First vent; 203. Second ash collection hood; 204. Second vent; 205. Third vent; 3. Base; 4. Furnace door; 5. Oven; 6. Adjustment assembly; 601. Fixed base; 602. Adjustment handle; 603. External thread; 604. Compression nut; 7. First top cover 8. Second top cover; 9. Chimney; 10. Electric heating port; 11. Dual-channel reverse combustion module; 1101. Spacing plate; 1102. Curved pipe; 1103. Fire tube; 1104. Reverse combustion port; 1105. Heating water pipe; 1106. Heating partition; 12. Dual water pan assembly; 1201. First water pan; 1202. Second water pan; 13. Double row of grate bars; 14. Air distribution channel; 15. Fire sealing baffle. Detailed Implementation
[0025] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.
[0026] like Figure 1-4 As shown, a curved-tube fire-tube dual-fire-channel heating furnace includes a furnace body 1; it also includes: a dual-fire-channel reverse-burning module 11, the dual-fire-channel reverse-burning module 11 including a partition plate 1101 fixedly installed inside the furnace body 1, the furnace body 1 being divided into a combustion chamber and a reverse-burning heating chamber by the partition plate 1101; a reverse-burning port 1104 is provided between the top of the partition plate 1101 and the top and bottom surfaces of the furnace body 1, and a fire tube 1103 and a curved tube 1102 are provided on the partition plate 1101; the two ends of the fire tube 1103 are respectively located in the combustion chamber and the reverse-burning heating chamber; an opening and closing mechanism is installed at the port of the fire tube 1103; a cooking port 102 is opened on the top of the furnace body 1 and is located above the combustion chamber, and a first top cover 7 is provided on the cooking port 102.
[0027] like Figure 2As shown, the furnace body 1 has a bottom groove 101 at the bottom, which is located at the bottom of the combustion chamber, and a double row of grate bars 13 is arranged in the bottom groove 101; air distribution channels 14 are arranged on both sides of the double row of grate bars 13. The bottom of the furnace body 1 is provided with an ash collection shell 2; a second ventilation port 204 and a third ventilation port 205 are provided on one side of the ash collection shell 2; a base 3 is fixedly installed at the bottom of the ash collection shell 2; two ash cleaning ports are opened on the front of the ash collection shell 2, and a first ash receiving cover 201 and a second ash receiving cover 203 are fitted into the two ash cleaning ports, and the first ash receiving cover 201 and the second ash receiving cover 203 extend into the ash collection shell 2; a first ventilation port 202 is provided on the first ash receiving cover 201.
[0028] In practice, the fuel is burned in the combustion chamber, where the first vent 202, the second vent 204 and the third vent 205 are used for ventilation and air intake. The incoming air provides ventilation to both sides of the double-row grate 13 through the air distribution channel 14, ensuring the charging and combustion of fuel on the double-row grate 13.
[0029] The ash produced by fuel combustion falls into the ash collection shell 2. The first ash receiving cover 201 and the second ash receiving cover 203 are used to collect the ash. The ash can be dumped by pulling out the first ash receiving cover 201 and the second ash receiving cover 203.
[0030] The inner wall of furnace body 1 is provided with a refractory mud layer.
[0031] like Figure 2 As shown, the curved tube 1102 is fixedly installed on one side of the partition plate 1101, and the curved tube 1102 is located inside the combustion chamber, while the fire tube 1103 is located above the curved tube 1102.
[0032] like Figure 1-2 As shown, the interior of the reverse heating chamber is equipped with a heating water pipe 1105 and an oven 5. The port of the oven 5 is located on the front of the oven body 1, and an end cap is provided on the port of the oven 5.
[0033] like Figure 1 As shown, the top of the furnace body 1 is provided with a chimney 9 and an opening, both of which are connected to the top of the reverse heating chamber, and a second top cover 8 is provided on the opening.
[0034] like Figure 2 As shown, it also includes a double water pan assembly 12; the double water pan assembly 12 is disposed below the cooking opening 102, and the double water pan assembly 12 includes a first water pan 1201 and a second water pan 1202 fixedly installed with the stove body 1. Both the first water pan 1201 and the second water pan 1202 are annular, and the diameter of the first water pan 1201 is larger than the diameter of the second water pan 1202.
[0035] During heating, the fire pipe 1103 is open, the cooking inlet 102 is closed, and combustion occurs in the combustion chamber, heating the water inside the curved pipe 1102 for heat exchange. Simultaneously, the flame heats the water in the first water pan 1201 and the second water pan 1202 for secondary heat exchange. Furthermore, the flame enters the reverse heating chamber from the fire pipe 1103 and the reverse heating inlet 1104, performing a third heat exchange by reverse combustion of the heating water pipe 1105 and the oven 5. This design significantly improves heat exchange efficiency. Finally, the combustion flue gas is discharged from the chimney 9.
[0036] When cooking, by turning off the fire tube 1103 and removing the first top cover 7, the flame heats the pot above it through the cooking opening 102, allowing for stir-frying.
[0037] like Figure 1-2 As shown, a heating baffle 1106 is fixedly installed inside the reverse heating chamber. The heating baffle 1106 and the inner wall of the top of the furnace body 1 form a cavity. An electric heating port 10 connected to the cavity is provided on the front of the furnace body 1. To improve the heating effect, an electric heating rod can be inserted into the electric heating port 10 for additional electric heating.
[0038] like Figure 1 As shown, the front of the furnace body 1 is provided with a coal feeding port that communicates with the combustion chamber, and a furnace door 4 is hinged to the coal feeding port. The coal feeding port is used to add fuel into the combustion chamber.
[0039] like Figure 1 , Figure 2 as well as Figure 4 As shown, the opening and closing mechanism includes a fire-sealing baffle 15; the fire-sealing baffle 15 is connected to an adjusting component 6; the adjusting component 6 includes a fixed base 601 fixedly installed on the front of the furnace body 1, an adjusting handle 602 rotatably installed on the fixed base 601, the adjusting handle 602 is fixedly connected to the fire-sealing baffle 15, one end of the adjusting handle 602 is located outside the front of the furnace body 1, and an external thread 603 is provided on the part of the adjusting handle 602 located outside the front of the furnace body 1, a clamping nut 604 is threadedly connected to the external thread 603, and the clamping nut 604 is clamped to the fixed base 601.
[0040] The opening and closing mechanism is used to control the opening and closing of the fire tube 1103. Specifically, when opening and closing, the clamping nut 604 is loosened to release the clamping of the fixed seat 601. Then, the adjusting handle 602 is rotated to flip the fire baffle 15, thereby opening or closing the fire tube 1103. After adjustment, the clamping nut 604 is tightened to press the clamping nut 604 onto the fixed seat 601, thereby achieving the clamping limit and maintaining the adjusted state.
[0041] This utility model is not limited to the above-described embodiments. Any changes in its shape or structure fall within the protection scope of this utility model. The protection scope of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the protection scope of this utility model.
Claims
1. A double-pass heating stove with curved and fire tube, comprising a stove body (1); characterized in that, Also include: Double fireway backfire module (11), the double fireway backfire module (11) includes fixedly installed to the partition plate (1101) in the furnace body (1), the furnace body (1) is separated into combustion cavity and backfire heating cavity by partition plate (1101); The top of the partition plate (1101) is provided with a backfire opening (1104) between the top bottom surface of the furnace body (1), and a fire tube (1103) and a curved pipe (1102) are arranged on the partition plate (1101); the two ends of the fire tube (1103) are located in the combustion cavity and the backfire heating cavity respectively; An opening and closing mechanism is installed at the port of the fire tube (1103); A cooking opening (102) is formed on the top of the furnace body (1), and the cooking opening (102) is located above the combustion cavity, and a first top cover (7) is arranged on the cooking opening (102).
2. A double-pass heating stove with curved and fire-tube according to claim 1, characterized in that: A bottom groove (101) is formed on the bottom of the furnace body (1), the bottom groove (101) is located at the bottom of the combustion cavity, and a double-row grate (13) is arranged in the bottom groove (101); air distribution channels (14) are arranged on both sides of the double-row grate (13).
3. A double-pass heating stove with curved and fire-tube according to claim 1, characterized in that: A dust collecting shell (2) is arranged on the bottom of the furnace body (1); a second air vent (204) and a third air vent (205) are arranged on one side of the dust collecting shell (2); a base (3) is fixedly installed on the bottom of the dust collecting shell (2); two dust cleaning openings are formed on the front face of the dust collecting shell (2), and a first dust collecting cover (201) and a second dust collecting cover (203) are embeddedly installed in the two dust cleaning openings, and the first dust collecting cover (201) and the second dust collecting cover (203) extend into the dust collecting shell (2); a first air vent (202) is arranged on the first dust collecting cover (201).
4. A double-pass firepot hydronic heater as described in claim 1 wherein: The curved pipe (1102) is fixedly installed on one side of the partition plate (1101), and the curved pipe (1102) is located in the combustion cavity, and the fire tube (1103) is located above the curved pipe (1102).
5. A double-pass heating stove with curved and fire-tubes according to claim 1, characterized in that: A heating water pipe (1105) and an oven (5) are arranged in the backfire heating cavity, the port of the oven (5) is arranged on the front face of the furnace body (1), and an end cover is arranged on the port of the oven (5).
6. A double-pass firepot hydronic heater as described in claim 1 wherein: A heating partition plate (1106) is fixedly installed in the backfire heating cavity, the heating partition plate (1106) and the inner wall of the top of the furnace body (1) form a partition cavity, and an electric heating opening (10) is arranged on the front face of the furnace body (1) and communicates with the partition cavity.
7. A double-pass firepot hydronic heater as described in claim 1 wherein: An opening for adding coal is arranged on the front face of the furnace body (1) and communicates with the combustion cavity, and a furnace door (4) is hingedly installed on the opening for adding coal.
8. A double-pass firepot hydronic heater as described in claim 1 wherein: A chimney (9) and an opening are arranged on the top of the furnace body (1), the chimney (9) and the opening both communicate with the top of the backfire heating cavity, and a second top cover (8) is arranged on the opening.
9. A double-pass heating stove with curved and fire-tubes according to claim 1, characterized in that: The opening and closing mechanism comprises a fire closing baffle (15); the fire closing baffle (15) is connected with an adjusting assembly (6); the adjusting assembly (6) comprises a fixed seat (601) fixedly installed to the front face of the furnace body (1), the fixed seat (601) is rotatably installed with an adjusting handle (602), the adjusting handle (602) is fixedly connected with the fire closing baffle (15), one end of the adjusting handle (602) is located outside the front face of the furnace body (1), and an outer thread (603) is arranged on the part of the adjusting handle (602) located outside the front face of the furnace body (1), the outer thread (603) is threadedly connected with a pressing nut (604), and the pressing nut (604) is pressed onto the fixed seat (601).
10. A double-pass heating stove with curved and fire-tubes according to claim 1, characterized in that: Further comprising a double water pan assembly (12); the double water pan assembly (12) is arranged below the cooking opening (102), and the double water pan assembly (12) comprises a first water pan (1201) and a second water pan (1202) fixedly installed with the furnace body (1).