Energy-saving combustion furnace
By installing air inlet pipes, heating pipes, and air outlet pipes in the combustion furnace, the problem of reduced temperature inside the combustion head is solved by using high-temperature air to preheat the air inside the combustion head, thus achieving complete combustion of fuel and improved thermal efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 杨勇
- Filing Date
- 2025-08-09
- Publication Date
- 2026-07-03
AI Technical Summary
The ambient air inside the burner head needs to absorb the heat released by fuel combustion to heat up, which leads to a decrease in the average temperature inside the burner head, incomplete fuel combustion, and thus reduced thermal efficiency.
The design employs an air inlet duct, a heating duct, and an air outlet duct, allowing air to pass through these ducts sequentially and enter the combustion head cavity. The high-temperature air exchanges heat with the outer circumference of the heating duct, preheating the air inside the combustion head and ensuring complete fuel combustion.
The thermal efficiency of the burner head is improved, ensuring complete fuel combustion. The residence time of air in the tube is extended to improve heating efficiency, and the residence time of air in the tube is further extended by the guide plate to enhance the heat exchange effect.
Smart Images
Figure CN224454909U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of combustion furnaces, and more particularly to an energy-saving combustion furnace. Background Technology
[0002] A combustion furnace is a device used for heating, drying, or baking. Through fuel combustion, the air is heated to form hot air, which enters the drying chamber or baking room. The hot air comes into full contact with the material and exchanges heat, thereby achieving the heating, drying, or baking treatment of the material to obtain a dried and cured product.
[0003] When fuel burns inside the burner, the ambient air inside the burner needs to absorb the heat released by the fuel combustion to heat up, which leads to a decrease in the average temperature inside the burner and incomplete fuel combustion, thereby reducing the thermal efficiency of the burner. Utility Model Content
[0004] In order to improve the thermal efficiency of the burner, this application provides an energy-saving combustion furnace.
[0005] This application provides an energy-saving combustion furnace, which adopts the following technical solution:
[0006] An energy-saving combustion furnace includes a furnace body, a blower, a fan, a burner head, an air inlet pipe, a heating pipe, and an air outlet pipe. The burner head is connected to the inner wall of the furnace body, and the inner cavity of the burner head is used for fuel combustion. The fan is rotatably connected to the inner wall of the furnace body facing the burner head. An exhaust channel is formed on the surface of the furnace body, and the exhaust channel connects to the inner cavity of the furnace body. The fan rotates and drives the air in the burner head to be discharged from the exhaust channel through the inner cavity of the furnace body. The blower is connected to the surface of the furnace body near the fan. One end of the air inlet pipe is connected to the air outlet of the blower, and the other end of the air inlet pipe is connected to the end of the heating pipe. The end of the heating pipe away from the air inlet pipe is connected to the end of the air outlet pipe, and the end of the air outlet pipe away from the heating pipe is connected to the air inlet of the burner head. The blower drives air through the air inlet pipe, the heating pipe, and the air outlet pipe and into the inner cavity of the burner head. The heating pipe is located between the fan and the burner head. The high-temperature air in the furnace body impacts the outer circumference of the heating pipe and is discharged from the exhaust channel.
[0007] By adopting the above technical solution, the fan drives air through the inlet pipe, heating pipe, and outlet pipe in sequence and into the inner cavity of the burner head. The fuel burns in the inner cavity of the burner head, heating the air inside the burner head. The fan drives the high-temperature air in the burner head into the inner cavity of the furnace body, impacting the outer circumference of the heating pipe before being discharged from the exhaust channel. The high-temperature air fully contacts and exchanges heat with the outer circumference of the heating pipe, thus heating the heating pipe. The heating pipe transfers some of its heat energy to the air inside. After the air in the heating pipe is heated, it enters the inner cavity of the burner head from the outlet pipe, preheating the air entering the burner head and ensuring the average temperature inside the burner head. This ensures complete fuel combustion and improves the thermal efficiency of the burner head.
[0008] Optionally, the heating pipe includes a pipe body, one end of which is connected to the end of the air inlet pipe along its length, and the other end of which is connected to the end of the air outlet pipe along its length.
[0009] By adopting the above technical solution, the fan drives air through the air inlet pipe into the inner cavity of the pipe and through the air outlet pipe into the inner cavity of the burner head. The air inlet pipe and the air outlet pipe are located at both ends of the length of the pipe, which prolongs the residence time of the air in the pipe. The air in the pipe comes into full contact with the inner wall of the pipe and exchanges heat, thereby improving the heating efficiency of the air in the pipe.
[0010] Optionally, the heating pipe further includes multiple guide plates, which are divided into two groups. The two groups of guide plates are connected at intervals on both sides of the pipe body along its length. A heating space for air passage is left between two adjacent guide plates. One end of each guide plate is connected to the inner wall of the pipe body, and a connecting space for air passage is left between the other end of the guide plate and the inner wall of the pipe body. The connecting space connects two adjacent heating spaces. The connecting spaces of the two groups of guide plates are located on both sides of the pipe body along its length, and the air inlet pipe and air outlet pipe are connected to the inner walls of the two groups of guide plates that are far apart from each other.
[0011] By adopting the above technical solution, the air inlet pipe and the air outlet pipe are connected one-to-one to the inner walls of two sets of guide plates that are far apart from each other. One end of the guide plate is connected to the inner wall of the pipe, and the other end of the guide plate is left with a connecting space for air to pass through. The connecting space is connected to the adjacent heating space. The air in the air inlet pipe enters the adjacent heating space through the heating space from the connecting space, and enters the inner cavity of the burner head from the air outlet pipe, further extending the residence time of the air in the inner cavity of the pipe, thereby improving the heating efficiency of the air.
[0012] Optionally, the fan rotating shaft is coaxially connected to a transmission bearing.
[0013] By adopting the above technical solution, the transmission bearing is coaxially connected to the fan rotating shaft, which can precisely limit the radial and axial displacement of the fan rotating shaft, prevent the fan from wobbling or vibrating during operation, and thus ensure the stability of the fan rotation.
[0014] Optionally, the air inlet duct is an annular duct, and the inner ring of the air inlet duct surrounds the outer ring of the transmission bearing.
[0015] By adopting the above technical solution, when the fan drives air into the air inlet duct, the inner ring of the air inlet duct surrounds the outer ring of the transmission bearing. The air in the air inlet duct exchanges heat with the transmission bearing through the air inlet duct and the inner wall of the furnace, making it difficult for the transmission bearing to overheat during long-term operation, thereby ensuring the stability of the transmission bearing operation.
[0016] Optionally, the furnace body is connected to a power assembly, and the end of the fan rotating shaft passes through the surface of the furnace body. The power assembly includes a power motor, two synchronous pulleys, and a synchronous belt used in conjunction with the synchronous pulleys. The power motor is connected to the surface of the furnace body, and the motor axis of the power motor and the fan rotating axis are parallel to each other. One of the synchronous pulleys is coaxially connected to the fan rotating shaft, and the other synchronous pulley is coaxially connected to the power motor rotating shaft. The synchronous belt tensions and connects the two synchronous belts.
[0017] By adopting the above technical solution, the synchronous belt tensions and connects the two synchronous pulleys, and the power motor drives the fan to rotate through the transmission action of the synchronous belt and the synchronous pulleys, thereby improving the stability of the fan rotating on the inner wall of the furnace.
[0018] Optionally, the furnace body surface is provided with an installation cavity for installing a fan, the installation cavity is connected to the inner cavity of the furnace body, and a cover for covering the installation cavity is fixed to the furnace body surface by screws.
[0019] By adopting the above technical solution, when the fan needs to be replaced, the screws can be unscrewed to separate the cover from the furnace body, thus facilitating the replacement and cleaning of the fan.
[0020] Optionally, the power assembly further includes a bearing housing connected to the furnace body surface, and the end of the fan rotating shaft coaxially passes through the bearing housing and is connected to the synchronous pulley.
[0021] By adopting the above technical solution, a bearing housing is coaxially inserted at the end of the fan rotating shaft and connected to the synchronous pulley. The bearing housing provides support for the fan rotating shaft, further improving the stability of the fan rotating on the inner wall of the furnace.
[0022] In summary, this application includes at least one of the following beneficial technical effects:
[0023] 1. The installation of air inlet pipe, heating pipe and air outlet pipe: The heating pipe transfers part of the heat energy to the air inside the heating pipe. After the air inside the heating pipe is heated, it enters the inner cavity of the burner head through the air outlet pipe, realizing the preheating of the air entering the burner head, ensuring the average temperature inside the burner head, and the fuel is fully burned, thereby improving the thermal efficiency of the burner head.
[0024] 2. The design of the tube extends the residence time of air inside the tube, allowing the air inside the tube to fully contact and exchange heat with the inner wall of the tube, thereby improving the heating efficiency of the air inside the tube.
[0025] 3. The guide plate design allows air in the intake duct to pass through the heating space, enter the adjacent heating space from the connecting space, and then enter the combustion head cavity from the exhaust duct, further extending the residence time of air in the inner cavity of the duct and thus improving the heating efficiency of the air. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application.
[0027] Figure 2 This is a cross-sectional view of an embodiment of this application.
[0028] Figure 3 This is a partial structural diagram of an embodiment of this application.
[0029] Figure 4 This is a cross-sectional view of the heating pipe in an embodiment of this application.
[0030] Figure 5 This is a schematic diagram of the overall structure of the power component and fan in the embodiments of this application.
[0031] Explanation of reference numerals in the attached drawings: 1. Furnace body; 11. Exhaust duct; 12. Mounting cavity; 2. Blower; 3. Fan; 4. Burner head; 5. Heating pipe; 51. Pipe body; 52. Guide plate; 521. Connecting space; 522. Heating space; 6. Air inlet pipe; 7. Air outlet pipe; 8. Transmission bearing; 9. Power assembly; 91. Power motor; 92. Bearing housing; 93. Synchronous pulley; 94. Synchronous belt; 10. Cover. Detailed Implementation
[0032] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.
[0033] This application discloses an energy-saving combustion furnace. (Refer to...) Figure 1 and Figure 2The energy-saving combustion furnace includes a furnace body 1, a blower 2, a fan 3, a burner head 4, an air inlet pipe 6, a heating pipe 5, and an air outlet pipe 7. The bottom of the furnace body 1 is supported by the ground. The burner head 4 is fixed to the inner wall of the furnace body 1 by bolts. The inner cavity of the burner head 4 is used for fuel combustion. The fan 3 is rotatably connected to the inner wall of the furnace body 1 facing the burner head 4. The rotation axis of the fan 3 is parallel to the length direction of the furnace body 1, and the fan 3 and the burner head 4 are located at opposite ends of the length direction of the furnace body 1. An exhaust channel 11 is opened on the top surface of the furnace body 1. The exhaust channel 11 connects to the inner cavity of the furnace body 1, and the slot of the exhaust channel 11 faces the air outlet of the fan 3. When the fan 3 rotates, it drives the high-temperature air in the burner head 4 through the inner cavity of the furnace body 1 and is discharged from the exhaust channel 11.
[0034] Reference Figure 3 and Figure 4 The heating pipe 5 includes a pipe body 51 and multiple guide plates 52. One end of the multiple guide plates 52 is connected to the inner wall of the pipe body 51 at intervals, and the other end of the multiple guide plates 52 has a connection space 521 for air to pass through with the inner wall of the pipe body 51. The arrangement direction of the guide plates 52 is parallel to the height direction of the pipe body 51. The multiple guide plates 52 are divided into two groups, and the two groups of guide plates 52 are located at the two ends of the length direction of the pipe body 51, and the connection spaces 521 on the two groups of guide plates 52 are located at the two ends of the length direction of the pipe body 51, and the two groups of guide plates 52 are staggered at intervals. A heating space 522 for air to pass through is left between two adjacent guide plates 52, and the connection space 521 connects two adjacent heating spaces 522.
[0035] Reference Figure 3 and Figure 4The pipe body 51 is connected to the inner wall of the furnace body 1, located between the fan 3 and the burner head 4. One end of the pipe body 51 along its length is connected to the end of the air inlet pipe 6, and the other end is connected to the end of the air outlet pipe 7. The air inlet pipe 6 and the air outlet pipe 7 are connected one-to-one to the inner walls of two sets of guide plates 52 that are far apart from each other. The fan 2 is fixed to the surface of the furnace body 1 near the fan 3 by bolts. The end of the air inlet pipe 6 away from the pipe body 51 is connected to the air outlet of the fan 2, and the end of the air outlet pipe 7 away from the pipe body 51 is connected to the air inlet of the burner head 4. The fan 2 drives air to pass sequentially through the air inlet pipe 6, the pipe body 51, and the air outlet pipe 7 and enter the burner head 4. Air in the air inlet duct 6 enters the adjacent heating space 522 from the connecting space 521 through the heating space 522, and then enters the inner cavity of the burner head 4 from the air outlet duct 7, further extending the residence time of the air in the inner cavity of the pipe body 51. The fuel in the burner head 4 burns and heats the air. At the same time, the fan 2 drives the high-temperature air in the combustion furnace into the inner cavity of the furnace body 1, impacts the outer circumference of the heating pipe 5, and then exits from the exhaust channel 11. The high-temperature air transfers heat energy to the air in the heating pipe 5 through the pipe wall, realizing the preheating of the air in the heating pipe 5, ensuring the average temperature in the burner head 4, and the fuel combustion is complete, thereby improving the thermal efficiency of the burner head 4.
[0036] Reference Figure 1 and Figure 5 The end of the rotating shaft of the fan 3 passes through the surface of the furnace body 1. The rotating shaft of the fan 3 is coaxially connected to the transmission bearing 8. In this embodiment, the air inlet pipe 6 is an annular pipe, and the inner ring of the air inlet pipe 6 surrounds the outer ring of the transmission bearing 8. The air in the air inlet pipe 6 exchanges heat with the transmission bearing 8 through the air inlet pipe 6 and the inner wall of the furnace body 1, so that the transmission bearing 8 is not prone to overheating and wear during long-term operation, thereby ensuring the stability of the operation of the transmission bearing 8.
[0037] Reference Figure 1 and Figure 5 The furnace body 1 is equipped with a power assembly 9, which drives the fan 3 to rotate. The power assembly 9 includes a power motor 91, a bearing housing 92, two synchronous pulleys 93, and a synchronous belt 94 used in conjunction with the synchronous pulleys 93. The power motor 91 is fixed to the surface of the furnace body 1 by bolts. The motor axis of the power motor 91 and the rotation axis of the fan 3 are parallel to each other. The bearing housing 92 is fixed to the surface of the furnace body 1 by bolts. The end of the fan 3's rotation shaft passes through the bearing housing 92 and is coaxially connected to one of the synchronous pulleys 93. The other synchronous pulley 93 is coaxially connected to the motor shaft of the power motor 91. The synchronous belt 94 tensions and connects the two synchronous pulleys 93. The power motor 91 drives the fan 3 to rotate through the synchronous belt 94 and the synchronous pulleys 93, thereby improving the stability of the fan 3 rotating on the inner wall of the furnace body 1.
[0038] Reference Figure 1 and Figure 2The furnace body 1 has an installation cavity 12 for installing the fan 3. The installation cavity 12 is connected to the inner cavity of the furnace body 1. The furnace body 1 has a cover 10 that covers the installation cavity 12, which is fixed to the surface of the furnace body 1 by bolts, so as to realize the detachable connection between the cover 10 and the furnace body 1, thereby improving the ease of cleaning and replacing the fan 3.
[0039] The implementation principle of an energy-saving combustion furnace according to an embodiment of this application is as follows: the fan 2 drives air to pass sequentially through the air inlet pipe 6, the pipe body 51 and the air outlet pipe 7 and enter the combustion head 4. The air in the air inlet pipe 6 passes through the heating space 522 and enters the adjacent heating space 522 from the connecting space 521, and then enters the inner cavity of the combustion head 4 from the air outlet pipe 7, further extending the residence time of the air in the inner cavity of the pipe body 51. The fuel in the combustion head 4 is burned and heats the air. At the same time, the fan 2 drives the high-temperature air in the combustion furnace to enter the inner cavity of the furnace body 1, impact the outer circumference of the heating pipe 5 and then exit from the exhaust channel 11. The high-temperature air transfers heat energy to the air in the heating pipe 5 through the pipe wall, realizing the preheating of the air in the heating pipe 5, ensuring the average temperature in the combustion head 4, and the fuel is fully burned, thereby improving the thermal efficiency of the combustion head 4.
[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. An energy efficient combustion furnace characterized by: The furnace includes a furnace body (1), a blower (2), a fan (3), a burner head (4), an air inlet pipe (6), a heating pipe (5), and an air outlet pipe (7). The burner head (4) is connected to the inner wall of the furnace body (1), and the inner cavity of the burner head (4) is used for fuel combustion. The fan (3) is rotatably connected to the inner wall of the furnace body (1) facing the burner head (4). An exhaust channel (11) is provided on the surface of the furnace body (1), and the exhaust channel (11) connects to the inner cavity of the furnace body (1). The fan (3) rotates and drives the air in the burner head (4) to be discharged from the exhaust channel (11) through the inner cavity of the furnace body (1). The blower (2) is connected to the surface of the furnace body (1) near the fan (3). One end of the air inlet pipe (6) is connected to the air outlet of the fan (2), and the other end of the air inlet pipe (6) is connected to the end of the heating pipe (5). The end of the heating pipe (5) away from the air inlet pipe (6) is connected to the end of the air outlet pipe (7). The end of the air outlet pipe (7) away from the heating pipe (5) is connected to the air inlet of the burner head (4). The fan (2) drives air through the air inlet pipe (6), the heating pipe (5) and the air outlet pipe (7) and into the inner cavity of the burner head (4). The heating pipe (5) is located between the fan (3) and the burner head (4). The high-temperature air in the furnace body (1) impacts the outer circumference of the heating pipe (5) and is discharged from the exhaust channel (11).
2. The energy efficient combustion furnace of claim 1, wherein: The heating pipe (5) includes a pipe body (51), one end of which is connected to the end of the air inlet pipe (6) along its length, and the other end of which is connected to the end of the air outlet pipe (7) along its length.
3. The energy efficient combustion furnace of claim 2, wherein: The heating pipe (5) also includes multiple guide plates (52), which are divided into two groups. The two groups of guide plates (52) are connected at intervals on both sides of the length direction of the pipe body (51). A heating space (522) for air to pass through is left between two adjacent guide plates (52). One end of the guide plate (52) is connected to the inner wall of the pipe body (51), and the other end of the guide plate (52) is connected to the inner wall of the pipe body (51) for air to pass through. The connecting space (521) connects two adjacent heating spaces (522). The connecting spaces (521) of the two groups of guide plates (52) are located on both sides of the length direction of the pipe body (51) respectively. The air inlet pipe (6) and the air outlet pipe (7) are connected to the inner walls of the two groups of guide plates (52) that are far apart from each other.
4. The energy efficient combustion furnace of claim 1, wherein: The fan (3) has a transmission bearing (8) coaxially connected to its rotating shaft.
5. The energy efficient combustion furnace of claim 4, wherein: The air inlet pipe (6) is an annular pipe, and the inner ring of the air inlet pipe (6) surrounds the outer ring of the transmission bearing (8).
6. The energy efficient combustion furnace of claim 1, wherein: The furnace body (1) is connected to a power assembly (9). The end of the rotating shaft of the fan (3) passes through the surface of the furnace body (1). The power assembly (9) includes a power motor (91), two synchronous pulleys (93), and a synchronous belt (94) used in conjunction with the synchronous pulleys (93). The power motor (91) is connected to the surface of the furnace body (1). The motor axis of the power motor (91) and the rotating axis of the fan (3) are parallel to each other. One of the synchronous pulleys (93) is coaxially connected to the rotating shaft of the fan (3), and the other synchronous pulley (93) is coaxially connected to the rotating shaft of the power motor (91). The synchronous belt (94) tensions and connects the two synchronous belts (94).
7. The energy efficient combustion furnace of claim 6, wherein: The furnace body (1) has an installation cavity (12) for installing a fan (3) on its surface. The installation cavity (12) is connected to the inner cavity of the furnace body (1). The furnace body (1) is covered by a cover (10) that covers the installation cavity (12) by screws.
8. The energy efficient combustion furnace of claim 6, wherein: The power assembly (9) also includes a bearing housing (92), which is connected to the surface of the furnace body (1). The end of the fan (3) rotating shaft is coaxially inserted through the bearing housing (92) and connected to the synchronous pulley (93).