Vertical combustion furnace

Abstract

The utility model relates to the field of heating equipment, in particular to a vertical combustion furnace. Comprising a furnace body, a fan and a smoke guide machine, the furnace body comprises more than two smoke pipes and air pipes, air ducts are formed in the air pipes, flues are formed in the smoke pipes, the innermost smoke pipe is internally provided with a combustion chamber and is provided with a feeding pipe, every two adjacent smoke pipes are communicated, a plurality of smoke exhaust pipes extending vertically are fixedly arranged in the outermost air pipe, and the smoke exhaust pipes are communicated with the combustion chamber. The upper end of the smoke exhaust pipe is communicated with the outermost smoke pipe, the lower end of the smoke exhaust pipe is connected with the smoke guiding machine, a first air inlet is formed in the upper portion of the outermost air pipe, and a first air outlet is formed in the lower portion of the outermost air pipe; an air suction port of the fan is connected with the first air outlet, an exhaust port of the fan is communicated with the air pipe on the second layer from outside to inside through an air inlet pipe, every two adjacent air pipes are communicated, and an air supply pipeline communicated with the outside is further arranged in the air pipe on the innermost layer. The utility model provides a vertical combustion furnace which is small in size, low in noise and low in manufacturing cost.

Description

Technical Field

[0001] This application relates to the field of heating equipment, and in particular to a vertical combustion furnace. Background Technology

[0002] Conventional combustion furnaces typically discharge flue gas directly, resulting in significant heat loss and energy waste. Furnaces in related technologies incorporate an exhaust pipe at the end of the flue gas stream. By drawing in air and exchanging heat with the exhaust pipe, the preheated air is then sent into the ductwork, thus utilizing the residual heat of the flue gas and improving heat efficiency. However, in these technologies, the exhaust pipe is installed externally, leading to a large furnace size, high noise levels, and a poor user experience. Summary of the Invention

[0003] In view of this, this application provides a vertical combustion furnace that is small in size, low in noise, and low in manufacturing cost.

[0004] To achieve the above objectives, this application employs the following technical solution:

[0005] A vertical combustion furnace, characterized in that it comprises a furnace body, a blower, and a flue gas fan. The furnace body includes two or more vertically arranged flue pipes and air ducts nested sequentially from the inside out. The air ducts form air channels, and the flue pipes form flue channels, thus forming a nested structure of one layer of flue channel surrounding another layer of air duct. The innermost flue pipe contains a combustion chamber and a feed pipe, through which fuel enters and burns. Adjacent flue pipes are connected, and the flue gas generated gradually flows from the inner flue pipe to the outer flue pipe. The outermost air duct contains several vertically extending exhaust pipes, the upper ends of which are connected to... The outermost smoke duct is connected, and the lower end of the smoke exhaust duct is connected to a smoke extraction fan, which draws the smoke from the smoke exhaust duct to the outside. The outermost duct has a first air inlet at the top and a first air outlet at the bottom. The fan's intake port is connected to the first air outlet, and the fan's exhaust port is connected to the second layer of ducts (from the outside to the inside) via an intake duct. Thus, air drawn into the outermost duct from the first air inlet is preheated by the smoke exhaust duct and then sent into the second layer of ducts (from the outside to the inside). Adjacent ducts are connected, and air flows from the outermost duct to the innermost duct. The innermost duct also contains a supply air duct that communicates with the outside. The number of smoke exhaust ducts can be adjusted as needed, and multiple ducts can be used.

[0006] The vertical combustion furnace described in this application has its exhaust pipe directly installed inside the outermost duct, resulting in a smaller overall furnace size and lower cost. Furthermore, as air flows downwards from the top of the outermost duct, it comes into contact with the exhaust pipe, significantly increasing the bend and contact area, thus improving heat energy utilization while also reducing noise. Moreover, the fan draws air from the bottom of the outermost duct and delivers it directly into the second-layer duct from the outside in, allowing for the use of a smaller motor and improving economic efficiency.

[0007] In some embodiments, the innermost flue is a first pipe body, and the outermost flue is a second pipe body. Several air guide plates are fixedly installed on the outer wall of the first pipe body, spaced circumferentially and arranged in a staggered, vertical distribution. A second air inlet is provided at the top of the second pipe body. Air entering the second pipe body through the second air inlet flows meanderingly on the outer surface of the first pipe body under the obstruction of the air guide plates and is discharged from the air supply pipe. Since the interior of the first pipe body is a combustion chamber with high combustion temperatures, the air guide plates on the outside of the first pipe body serve two purposes: firstly, they increase the heat dissipation surface; secondly, they allow air to flow in multiple locations on the outer surface of the first pipe body, similar to navigating a maze, thus preventing localized overheating and extending the pipe body's service life. In this embodiment, four air guide plates are used, and the number of these plates can be increased as needed.

[0008] In some embodiments, the outermost duct is the sixth duct body, the outermost smoke duct is the fifth duct body, the second duct body from the outside to the inside is the fourth duct body, and the second smoke duct body from the outside to the inside is the third duct body. The third duct body is fitted around the outer periphery of the second duct body. The upper part of the first duct body is provided with a flow pipe connected to the upper part of the third duct body, and the lower part of the third duct body is connected to the lower part of the fifth duct body. This embodiment uses a six-layer duct structure, which can be increased to eight or ten layers as needed.

[0009] In some embodiments, the vertical combustion furnace further includes a base, the base comprising a partition plate installed at the lower part of each tube body, a first basin fixedly installed at the bottom of the partition plate, a second basin sleeved around the outer periphery of the first basin and fixedly connected to the partition plate, and a third basin sleeved around the outer periphery of the second basin and fixedly connected to the partition plate; the partition plate is provided with a first channel communicating between the first tube body and the first basin, a second channel communicating between the third tube body and the second basin, a third channel connecting the second basin and the fifth tube body, and a fourth channel connecting the sixth tube body and the third basin, the first air outlet being located on the third basin; a first ash removal pipe is provided on the first tube body, a second ash removal pipe is provided on the first basin, and a third ash removal pipe is provided on the second basin, each ash removal pipe being provided with an openable and closable door. The ash removal pipes are mainly used for convenient cleaning of ash in the flue.

[0010] In some embodiments, the first basin is further provided with an air duct that is connected to an external blower. The blower is mainly used to increase the air volume in the combustion chamber, thereby increasing the combustion temperature.

[0011] In some embodiments, the first pipe body is further provided with an ignition conduit, and an ignition device is installed inside the ignition conduit. The ignition device is mainly used to ignite the fuel.

[0012] In some embodiments, the vertical combustion furnace also includes a pellet burner connected to a feed pipe to supply fuel to the combustion chamber. This pellet burner can automatically feed pellet fuel, reducing labor costs.

[0013] As can be seen from the above technical solution, this application has at least the following advantages and positive effects:

[0014] This application discloses a vertical combustion furnace in which the exhaust pipe is directly installed inside the outermost duct, resulting in a smaller overall furnace size and lower cost. Furthermore, as the air flows downwards from the top of the outermost duct, it comes into contact with the exhaust pipe, significantly increasing the bend and contact area, thus improving thermal efficiency while also reducing noise. Moreover, the fan draws air from the bottom of the outermost duct and delivers it directly into the second-layer duct from the outside in, allowing for the use of a smaller motor and improving economic efficiency. Attached Figure Description

[0015] Figure 1 This is a perspective structural diagram of an embodiment of this application;

[0016] Figure 2 This is a schematic diagram of the internal structure of an embodiment of this application;

[0017] Figure 3 Explosions in embodiments of this application Figure 1 ;

[0018] Figure 4 Explosions in embodiments of this application Figure 2 ;

[0019] Figure 5 Explosions in embodiments of this application Figure 3 ;

[0020] Figure 6 Explosions in embodiments of this application Figure 4 ;

[0021] Figure 7 Explosions in embodiments of this application Figure 5 ;

[0022] Figure 8 This is an exploded view of the base in an embodiment of this application.

[0023] Labeling Explanation: 1. Furnace Body; 11. First Pipe Body; 111. Feed Pipe; 112. Air Guide Plate; 113. Flow Pipe; 114. First Ash Removal Pipe; 115. Ignition Pipe; 12. Second Pipe Body; 121. Air Supply Pipe; 122. Second Air Inlet; 13. Third Pipe Body; 14. Fourth Pipe Body; 15. Fifth Pipe Body; 151. Air Inlet Pipe; 16. Sixth Pipe Body; 161. First Air Inlet; 2. Fan; 3. Smoke extractor; 4. Smoke exhaust pipe; 5. Base; 51. Partition; 511. First duct; 512. Second duct; 513. Third duct; 514. Fourth duct; 52. First basin; 521. Second ash removal pipe; 53. Second basin; 531. Third ash removal pipe; 54. Third basin; 541. First air outlet; 55. Opening / closing door; 6. Pellet burner; 7. Ash removal port. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. The terminology used in the embodiments section of this application is only for explaining specific embodiments and is not intended to limit the application.

[0025] See Figures 1 to 8 This application provides a vertical combustion furnace, including a furnace body 1, a blower 2, and a flue gas fan 3. The furnace body 1 includes two or more vertically arranged flue pipes and air ducts nested sequentially from the inside out. The air ducts form air channels inside, and the flue pipes form flue channels inside, thus forming a nested structure of one layer of flue channel and one layer of air channel. The innermost flue pipe has a combustion chamber inside and is provided with a feed pipe 111. Fuel enters the combustion chamber through the feed pipe 111 and is burned therein. Adjacent flue pipes are connected, and the flue gas generated by combustion gradually flows from the inner flue pipe to the outer flue pipe. The outermost air duct has several vertically extending exhaust pipes 4 fixedly installed inside. The upper end of the exhaust pipes 4 is connected to the outermost flue pipe. The exhaust pipe 4 is connected to the smoke extraction fan 3 at its lower end, which draws the smoke from the exhaust pipe 4 to the outside. The outermost duct has a first air inlet 161 at its upper part and a first air outlet 541 at its lower part. The air intake port of the fan 2 is connected to the first air outlet 541, and the exhaust port of the fan 2 is connected to the second layer of ducts from the outside to the inside through the air inlet pipe 151. In this way, the air drawn into the outermost duct from the first air inlet 161 is preheated by the exhaust pipe 4 and then sent into the second layer of ducts from the outside to the inside. Adjacent ducts are connected, and the air flows from the outer duct to the inner duct. The innermost duct also has an air supply pipe 121 that communicates with the outside. The number of exhaust pipes 4 can be set as needed, and there can be multiple exhaust pipes.

[0026] This vertical combustion furnace integrates the exhaust pipe 4 directly into the outermost duct, resulting in a smaller overall furnace size and lower cost. Furthermore, as air flows downwards from the top of the outermost duct, it contacts the exhaust pipe 4, significantly increasing the bend and contact area, thus improving thermal efficiency while also reducing noise. Additionally, the fan 2 draws air in from the bottom of the outermost duct and delivers it directly into the second-layer duct from the outside in, allowing for the use of a smaller motor and improved economic efficiency.

[0027] The innermost smoke pipe is the first pipe body 11, and the outermost smoke pipe is the second pipe body 12. Several air guide plates 112 are fixedly installed on the outer wall of the first pipe body 11. These air guide plates 112 are circumferentially spaced and staggered vertically. A second air inlet 122 is located at the top of the second pipe body 12. The air entering the second pipe body 12 from the second air inlet 122 flows meanderingly on the outer surface of the first pipe body 11 under the obstruction of the air guide plates 112, and is then discharged from the air supply pipe 121. Since the interior of the first pipe body 11 is a combustion chamber with high combustion temperatures, the air guide plates 112 on the outside of the first pipe body 11 serve two purposes: firstly, they increase the heat dissipation surface, and secondly, they allow the air to flow in multiple places on the outer surface of the first pipe body 11, similar to navigating a maze. This helps prevent localized overheating and thus extends the service life of the pipe body. In this embodiment, there are four air guide plates 112, and the number of air guide plates 112 can be increased as needed.

[0028] The outermost duct is the sixth duct body 16, the outermost smoke duct is the fifth duct body 15, the second duct body from the outside to the inside is the fourth duct body 14, and the second smoke duct body from the outside to the inside is the third duct body 13. The third duct body 13 is fitted around the outer periphery of the second duct body 12. The upper part of the first duct body 11 is provided with a flow pipe 113 that connects to the upper part of the third duct body 13, and the lower part of the third duct body 13 is connected to the lower part of the fifth duct body 15. This embodiment uses a six-layer duct structure, which can be increased to eight or ten layers as needed.

[0029] The vertical combustion furnace also includes a base 5, which includes a partition plate 51 installed at the lower part of each tube body, a first basin 52 fixedly installed at the bottom of the partition plate 51, a second basin 53 sleeved around the outer periphery of the first basin 52 and fixedly connected to the partition plate 51, and a third basin 54 sleeved around the outer periphery of the second basin and fixedly connected to the partition plate 51; the partition plate 51 is provided with a first channel 511 connecting the first tube body 11 and the first basin 52, and a channel 54 connecting the third tube body 13 and the second basin 53. The system includes a second duct 512, a third duct 513 connecting the second basin 53 and the fifth pipe 15, and a fourth duct 514 connecting the sixth pipe 16 and the third basin 54. A first air outlet 541 is located on the third basin 54. A first cleaning pipe 114 is installed on the first pipe 11, a second cleaning pipe 521 is installed on the first basin 52, and a third cleaning pipe 531 is installed on the second basin 53. Each cleaning pipe is equipped with an openable / closable door 55. The cleaning pipes are primarily designed for convenient cleaning of ash from the flue.

[0030] The first basin 52 is also equipped with an air duct, which is connected to an external blower 2. The blower 2 is mainly used to increase the air volume in the combustion chamber, thereby increasing the combustion temperature. The air duct is not shown in the diagram.

[0031] The first pipe body 11 is also provided with an ignition pipe 115, and an ignition device is installed inside the ignition pipe 115. The ignition device is mainly used to ignite the fuel.

[0032] The vertical combustion furnace also includes a pellet burner 6 connected to the feed pipe 111 to provide fuel to the combustion chamber. The pellet burner 6 can automatically feed pellet fuel, which can reduce labor costs.

[0033] To facilitate ash removal, each flue is equipped with an ash removal port 7 at the top.

[0034] The following is a brief description of the working process and usage method of a vertical combustion furnace according to the above embodiments:

[0035] See Figure 2 The pellet burner 6 feeds material into the feed pipe 111, and the ignition device ignites the fuel located inside the first pipe 11. The flue gas generated by the fuel moves upward. See [link / reference]. Figure 6 The flue gas enters the third pipe body 13 through the circulation pipe 113, moves from top to bottom, and enters the second basin body 53 through the second hole 512 on the partition 51. (See below) Figure 4 Then it enters the fifth tube 15 through the third channel 513, and then moves upwards, see... Figure 3 The flue gas enters the exhaust pipe 4, then moves downwards and is drawn in by the smoke induced draft fan 3 and discharged outwards.

[0036] See Figure 1 ,2 and Figure 3 Air enters the interior of the sixth pipe 16 through the first air inlet 161, contacts the surfaces of the exhaust pipe 4 and the fifth pipe 15, and is preheated. Air then enters the third basin 54 through the fourth channel 514 of the partition 51, and flows out through the first air outlet 541, where it is drawn in by the fan 2. (See also...) Figure 5 Fan 2 sends air through inlet pipe 151 into the fourth pipe body 14, where it moves upwards. (See also...) Figure 7 The air enters the second pipe body 12 through the second air inlet 122, moves downward, and moves meanderingly on the surface of the first pipe body 11 under the action of the air guide plate 112 and is discharged from the air supply pipe 121. During the movement, the air is heated to a preset temperature by the flue.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them; although the embodiments of this application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A vertical combustion furnace, characterized in that: The system includes a furnace body, a blower, and a flue gas fan. The furnace body comprises two or more vertically arranged flue pipes and air ducts nested sequentially from the inside out. The interior of each air duct forms an air channel, and the interior of each flue pipe forms a flue, creating a nested structure with one layer of flue pipe surrounding another layer of air duct. The innermost flue pipe houses a combustion chamber and has a feed pipe. Fuel enters the combustion chamber through the feed pipe and burns there. Adjacent flue pipes are interconnected, and the flue gas generated gradually flows from the inner flue pipe to the outer flue pipe. The outermost air duct has several vertically extending exhaust pipes fixedly installed inside, with the upper ends of the exhaust pipes connected to the outermost flue pipe. The exhaust pipe is connected to a smoke extraction fan at its lower end, which draws the smoke from the exhaust pipe to the outside. The outermost duct has a first air inlet at its upper part and a first air outlet at its lower part. The fan's intake port is connected to the first air outlet, and the fan's exhaust port is connected to the second layer of ducts from the outside to the inside through the intake pipe. In this way, the air drawn into the outermost duct from the first air inlet is preheated by the exhaust pipe and then sent into the second layer of ducts from the outside to the inside. Adjacent ducts are connected, and air flows from the outer duct to the inner duct. The innermost duct also has an air supply pipe that communicates with the outside.

2. A vertical combustion furnace according to claim 1, characterized in that: The innermost smoke pipe is the first pipe body, and the smoke pipe of the outermost layer is the second pipe body. Several air guide plates are fixedly installed on the outer wall of the first pipe body. The air guide plates are arranged circumferentially and staggered vertically. The top of the second pipe body is provided with a second air inlet. The air entering the second pipe body from the second air inlet flows meanderingly on the outer surface of the first pipe body under the obstruction of the air guide plates and is discharged from the air supply pipe.

3. A vertical combustion furnace according to claim 2, characterized in that: The outermost air duct is the sixth duct body, the outermost smoke duct is the fifth duct body, the second layer of air duct from the outside to the inside is the fourth duct body, the second layer of smoke duct from the outside to the inside is the third duct body, the third duct body is sleeved on the outer periphery of the second duct body, the upper part of the first duct body is provided with a flow pipe connected to the upper part of the third duct body, and the lower part of the third duct body is connected to the lower part of the fifth duct body.

4. A vertical combustion furnace according to claim 3, characterized in that: The vertical combustion furnace also includes a base, which includes a partition plate installed at the bottom of each tube body, a first basin fixedly installed at the bottom of the partition plate, a second basin sleeved around the outer periphery of the first basin and fixedly connected to the partition plate, and a third basin sleeved around the outer periphery of the second basin and fixedly connected to the partition plate. The partition plate is provided with a first channel connecting the first tube body and the first basin, a second channel connecting the third tube body and the second basin, a third channel connecting the second basin and the fifth tube body, and a fourth channel connecting the sixth tube body and the third basin. The first air outlet is opened on the third basin. A first ash removal pipe is provided on the first tube body, a second ash removal pipe is provided on the first basin, and a third ash removal pipe is provided on the second basin. Each ash removal pipe is provided with an openable and closable door.

5. A vertical combustion furnace according to claim 4, characterized in that: The first basin is also equipped with an air duct, which is connected to an external blower.

6. A vertical combustion furnace according to claim 2, characterized in that: The first pipe body is also provided with an ignition pipe, and an ignition device is installed inside the ignition pipe.

7. A vertical combustion furnace according to claim 1, characterized in that: The vertical combustion furnace also includes a pellet burner connected to the feed pipe to provide fuel to the combustion chamber.

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