Vertical closed multi-stage combustion system
The design of the vertical closed multi-stage combustion system achieves full mixing and sequential combustion of fuel and air, solves the problem of incomplete fuel combustion, reduces toxic gas emissions, and improves heat utilization and heat exchange efficiency.
Patent Information
- Application Number
- CN202520461141.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-17
AI Technical Summary
Incomplete combustion of fuel in existing combustion devices results in low thermal efficiency and the production of toxic gases, especially high carbon monoxide emissions, and makes it impossible to effectively utilize the thermal energy of fuel for heat exchange.
It adopts a vertical closed multi-stage combustion system, which promotes the full mixing of fuel and air through the air comb and combustion in multiple combustion chambers in stages, including pre-combustion, two-stage combustion and four-stage combustion, to ensure the full combustion of air-fuel mixture and efficient heat exchange in the final combustion chamber.
It significantly reduces emissions of toxic gases such as carbon monoxide from incomplete combustion, improves the thermal efficiency of fuel, and enhances heat exchange efficiency by increasing the heat exchange area and staged combustion.
Smart Images
Figure CN223855617U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to combustion heating and heat exchange device field, especially a kind of vertical closed multistage combustion system. BACKGROUND
[0002] Fuel combustion is the conversion process from chemical energy to heat energy, and heat energy realizes the heating of water to cook food or make water into high-temperature steam to cook food or as a power source for mechanical transmission. Fuel generally includes gas (such as natural gas) or liquid (such as liquid fuel), for example, heating water in a pot or boiler, fuel is generally burned at the bottom of the pot, which loses a lot of heat, affecting the heat utilization rate of fuel combustion. Improving heat utilization is currently a key technical research focus. Moreover, fuel is generally burned directly at the bottom of the boiler, and fuel and air are not fully mixed. Gas fuel is relatively easy to mix, but the mixing efficiency of liquid fuel is often low, which leads to incomplete combustion of fuel. In addition to low fuel utilization, it also produces carbon monoxide and other toxic gases due to incomplete combustion. The existing combustion device is directly burned at the bottom of the boiler (also known as primary combustion), which cannot avoid the production of carbon monoxide and other toxic gases due to incomplete combustion. This is a major technical problem faced by current combustion devices. How to effectively utilize the heat energy of fuel combustion and make more heat energy participate in heat exchange and turn water into steam is another major technical problem of existing technology. SUMMARY
[0003] The utility model aims at solving the technical problems pointed out in the background art, and provides a vertical closed multistage combustion system. The wind is combed by a wind combing cylinder and enters the mixing chamber to promote the full mixing of fuel and air. The air-fuel mixture is ignited for the first time in the mixing chamber to form pre-combustion or primary combustion. The air-fuel mixture flows and transmits step by step with the wind flow. Secondary combustion is carried out in the combustion chamber A of the combustion cylinder A, tertiary combustion is carried out in the combustion chamber B of the combustion cylinder B, and quaternary combustion is carried out in the combustion chamber C of the combustion cylinder C. The air-fuel mixture is fully mixed and combusted, which greatly reduces the emission of carbon monoxide and other toxic gases due to incomplete combustion.
[0004] The utility model achieves the purpose by the following technical solutions:
[0005] A vertical closed multi-stage combustion system, comprising a wind box, an inner lining cylinder inside the wind box, a combing wind cylinder connected by a sealing bottom plate inside the inner lining cylinder, a combustion cylinder A sealingly connected at the top of the inner lining cylinder, and a combustion cylinder B sleeved and mounted outside the combustion cylinder A; the wind box has an air inlet chamber, and the wind box is provided with an air inlet A communicating with the air inlet chamber; the inner cavity of the combing wind cylinder communicates with the air inlet chamber of the wind box, and the combing wind cylinder is provided with a plurality of air grooves circumferentially distributed; a mixing chamber is formed between the inner wall of the inner lining cylinder and the outer wall of the combing wind cylinder; the combustion cylinder A has a combustion chamber A communicating with the mixing chamber inside; the combustion cylinder B has a combustion chamber B inside; a plurality of flame heat outlets A are uniformly formed on the combustion cylinder A; the combustion cylinder B is sleeved with a combustion cylinder C, the combustion cylinder C has a combustion chamber C inside, and the combustion cylinder B is provided with a plurality of flame heat outlets B; and the combustion cylinder C is provided with a smoke outlet.
[0006] In order to better realize the utility model, the inner lining cylinder of the wind box is provided with a fuel delivery pipe, the pipe opening of the fuel delivery pipe is arranged in the mixing chamber, and the inner lining cylinder is provided with an igniter corresponding to the pipe opening of the fuel delivery pipe.
[0007] Preferably, the bottom of the wind box is connected with a fan box, the bottom of the fan box is provided with an air inlet filter hole plate, the inside of the fan box is provided with a pulse pump connected with the fuel tank, the pulse pump is connected with the fuel delivery pipe, and the inside of the fan box is further provided with a fan corresponding to the air inlet A.
[0008] Preferably, the utility model further comprises an evaporation cylinder, the top of the wind box is sealingly connected with a cylinder bottom plate of the evaporation cylinder, the combustion cylinder C is sealingly connected to the cylinder bottom plate, the combustion cylinder C is located in the evaporation cylinder cavity of the evaporation cylinder, and the combustion cylinder B and the combustion cylinder A are located in the evaporation cylinder cavity of the evaporation cylinder in space.
[0009] Preferably, a pipe joint A is sealingly mounted on the smoke outlet, a pipe joint B is sealingly and penetratively mounted on the cylinder bottom plate, and a flue gas heat exchange coil located in the evaporation cylinder cavity is sealingly connected between the pipe joint A and the pipe joint B.
[0010] Preferably, the combing wind cylinder is composed of a cylinder body A and a cylinder top plate A located at the top of the cylinder body A and sealingly connected with the top end of the cylinder body A, the bottom of the cylinder body A is provided with an air inlet cylinder opening communicating with the air inlet chamber, and the inner cavity of the cylinder body A is a wind collecting chamber; all the air grooves are circumferentially distributed along the surface of the cylinder wall of the cylinder body A; in all the air grooves, all the air grooves are downwind grooves, or all the air grooves are upwind grooves, or part of the air grooves are downwind grooves and the remaining air grooves are upwind grooves; the downwind grooves are set to be inclined to blow out in a clockwise direction from the inner wall to the outer wall of the cylinder body A, and the upwind grooves are set to be inclined to blow out in an anticlockwise direction from the inner wall to the outer wall of the cylinder body A.
[0011] Preferably, the half cylinder wall of the cylinder A is uniformly arranged with the upwind groove, and the other half cylinder wall of the cylinder A is uniformly arranged with the downwind groove.
[0012] Preferably, the combustion cylinder A is composed of the cylinder B and the annular bottom plate A arranged outside the bottom of the cylinder B, the annular bottom plate A is in bolt sealing connection with the top of the inner lining cylinder, all the flame heat outlets A are uniformly arranged on the cylinder wall of the cylinder B; the top of the inner lining cylinder is higher than the top of the wind combing cylinder.
[0013] Preferably, the flameout protection probe is arranged in the inner cavity of the wind combing cylinder, the needle passing hole is arranged in the center of the cylinder A, the detection end of the flameout protection probe passes through the needle passing hole of the cylinder A; the inner wall of the inner lining cylinder is further covered with the wire mesh.
[0014] Preferably, the inner lining cylinder is provided with the fuel inlet, the fuel inlet pipe is connected with the fuel inlet, the fuel inlet pipe is in sealing connection with the fuel conveying pipe; the inner lining cylinder is further provided with the igniter mounting hole corresponding to the position of the fuel inlet, and the igniter is arranged in the igniter mounting hole.
[0015] Compared with the prior art, the utility model has the following advantages and beneficial effects:
[0016] (1) The utility model discloses a wind combing cylinder is arranged in the mixed chamber, and the air-fuel mixture is fully mixed and fully combusted, and the toxic gas such as carbon monoxide of insufficient combustion is greatly reduced, and the fuel thermal efficiency is higher due to sufficient combustion.
[0017] (2) In the step-by-step combustion process, the high-temperature flame and the flue gas pass through the flame heat outlet A into the combustion chamber B of the combustion cylinder B in turn along with the air flow, then pass through the flame heat outlet B into the combustion chamber C of the combustion cylinder C after mixing, all the air-fuel mixtures are fully combusted, and the flame and the high-temperature flue gas are step-by-step transmitted and gathered into the inner cavity of the combustion cylinder C, the combustion cylinder C is arranged in the evaporation cylinder and realizes high-efficiency heat exchange, the combustion cylinder C realizes the heat exchange through the larger area, and the heat exchange efficiency is promoted. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is external structure schematic diagram after installing the evaporation cylinder for the vertical closed multistage combustion system.
[0019] Figure 2 It is Figure 1Structure diagram of the device from the top view;
[0020] Figure 3 Structure diagram of the device after the vertical closed multi-stage combustion system is combined with the cylinder bottom plate and the pulse pump and the fan are installed;
[0021] Figure 4 Structure diagram of the device after the vertical closed multi-stage combustion system is combined with the cylinder bottom plate and the pulse pump and the fan are installed; Figure 3 Structure diagram of the device after the fan box and the internal components are removed;
[0022] Figure 5 Structure diagram of the device after the vertical closed multi-stage combustion system is combined with the cylinder bottom plate and the pulse pump and the fan are installed; Figure 3 Structure diagram of the device after the vertical closed multi-stage combustion system is combined with the cylinder bottom plate and the pulse pump and the fan are installed;
[0023] Figure 6 Structure diagram of the device after the vertical closed multi-stage combustion system is combined with the cylinder bottom plate and the pulse pump and the fan are installed; Figure 3 Structure diagram of the device after the vertical closed multi-stage combustion system is combined with the cylinder bottom plate and the pulse pump and the fan are installed;
[0024] Figure 7 Structure diagram of the device after the vertical closed multi-stage combustion system is combined with the cylinder bottom plate and the pulse pump and the fan are installed; Figure 6 Structure diagram of the device after the vertical closed multi-stage combustion system is combined with the cylinder bottom plate and the pulse pump and the fan are installed;
[0025] Figure 8 Structure diagram of the device after the vertical closed multi-stage combustion system is combined with the cylinder bottom plate and the pulse pump and the fan are installed; Figure 6 Structure diagram of the device after the vertical closed multi-stage combustion system is combined with the cylinder bottom plate and the pulse pump and the fan are installed;
[0026] Figure 9 Structure diagram of the device after the vertical closed multi-stage combustion system is combined with the cylinder bottom plate and the pulse pump and the fan are installed;
[0027] Figure 10 Structure diagram of the device after the vertical closed multi-stage combustion system is combined with the cylinder bottom plate and the pulse pump and the fan are installed; Figure 6 Structure diagram of the device after the vertical closed multi-stage combustion system is combined with the cylinder bottom plate and the pulse pump and the fan are installed;
[0028] Figure 11 Structure diagram of the device after the vertical closed multi-stage combustion system is combined with the cylinder bottom plate and the pulse pump and the fan are installed; Figure 6 Structure diagram of the device after the vertical closed multi-stage combustion system is combined with the cylinder bottom plate and the pulse pump and the fan are installed.
[0029] In the drawings, the names corresponding to the reference signs are as follows:
[0030] 1 - air box, 11 - inner lining cylinder, 12 - sealing bottom plate, 2 - fan box, 21 - air inlet filter hole plate, 3 - pulse pump, 31 - fuel delivery pipe, 311 - fuel inlet, 3111 - fuel inlet direction, 312 - fuel inlet pipe, 4 - fan, 5 - igniter mounting hole, 6 - air mixing cylinder, 61 - cylinder A, 611 - counter-wind groove, 612 - wind groove, 62 - cylinder top plate A, 63 - needle running hole, 7 - flameout protection probe needle, 8 - wire mesh, 9 - combustion cylinder A, 91 - cylinder B, 911 - flame heat outlet A, 92 - annular bottom plate A, 10 - combustion cylinder B, 101 - flame heat outlet B, 13 - combustion cylinder C, 131 - pipe joint A, 14 - flue gas heat exchange coil, 15 - evaporation cylinder, 151 - cylinder bottom plate, 1511 - pipe joint B, 16 - air inlet A. DETAILED DESCRIPTION
[0031] The utility model will be further explained in detail in combination with examples:
[0032] Embodiment
[0033] As Figures 6 to 11 shown, a vertical closed multi-stage combustion system includes a wind box 1, as Figure 7 shown, the wind box 1 has an air inlet chamber inside, the wind box 1 has an inner lining cylinder 11 (the middle part of the wind box 1 is recessed and has the inner lining cylinder 11, the air inlet chamber of the wind box 1 in this embodiment has air inlet at the bottom), the inner lining cylinder 11 is connected with a combing air cylinder 6 through a sealing bottom plate 12 inside, the combing air cylinder 6 is located inside the inner lining cylinder 11, a mixing chamber is formed between the inner lining cylinder 11 and the combing air cylinder 6, and the sealing bottom plate 12 in the annular shape is in airtight connection between the bottom end of the inner lining cylinder 11 and the bottom end of the combing air cylinder 6. The inner lining cylinder 11 is closedly connected with a combustion cylinder A 9 at the top, the combustion cylinder A 9 has an annular bottom plate A 92 outside the bottom end, the annular bottom plate A 92 is closedly connected with the top of the inner lining cylinder 11 (for example, the annular bottom plate A 92 is directly covered on the top of the inner lining cylinder 11), as Figure 6 shown, the top of the inner lining cylinder 11 is higher than the top of the combing air cylinder 6, so that a channel after fuel mixing is formed between the top of the combing air cylinder 6 and the annular bottom plate A 92, the combustion cylinder B 10 is installed outside the combustion cylinder A 9, the combustion cylinder A 9 is located in the cylinder inner cavity of the combustion cylinder B 10 as a whole, and the combustion cylinder B 10 is connected with the annular bottom plate A 92 or the top end of the inner lining cylinder 11 at the bottom. The wind box 1 has an air inlet chamber, the wind box 1 is provided with an air inlet A 16 in communication with the air inlet chamber, and the air inlet A 16 continuously supplies combustion-supporting air into the wind box 1.
[0034] The cylinder inner cavity of the combing air cylinder 6 is in communication with the air inlet chamber of the wind box 1, and the cylinder bottom of the combing air cylinder 6 is fully opened or partially opened, as Figure 6 shown, the cylinder inner cavity of the combing air cylinder 6 is in communication with the air inlet chamber of the wind box 1; the combing air cylinder 6 is provided with a plurality of air grooves in circumferential distribution, and the mixing chamber is surrounded between the inner wall of the inner lining cylinder 11 and the outer wall of the combing air cylinder 6 (the bottom of the mixing chamber is the sealing bottom plate 12, which is not directly communicated with the air inlet chamber of the wind box 1, and the mixing chamber is communicated with the cylinder inner cavity of the combing air cylinder 6 through each air groove). The external air enters the air inlet chamber of the wind box 1 through the air inlet A 16, and then is collected in the cylinder inner cavity of the combing air cylinder 6, as Figure 8As shown, the wall of the combing cylinder 6 is circumferentially distributed with a wind groove (the wind groove plays a role of combing wind, the combing wind passing through the wind groove enters the mixing chamber in a certain rule, which enhances the mixing efficiency of the gaseous fuel or atomized fuel and air, and realizes more sufficient mixing), the combing wind passing through the combing cylinder 6 enters the mixing chamber to promote the mixing of the gaseous fuel or atomized fuel and air, and the fuel and air mixture is called air-fuel mixture, which is ignited for the first time in the mixing chamber (here it can be called pre-combustion or primary combustion, in the process of continuous combustion, the combing cylinder 6, the inner lining cylinder 11 and the mixing chamber are all high-temperature environments, if the fuel entering the mixing chamber is liquid fuel, it is immediately vaporized and gradually transmitted in the instant of entering).
[0035] As shown, Figures 1 to 5 The air-fuel mixture enters the combustion chamber A (which can be called secondary combustion) of the combustion cylinder A 9, the combustion chamber B (which can be called tertiary combustion) of the combustion cylinder B 10 and the combustion chamber C (which can be called quaternary combustion) of the combustion cylinder C 13 in turn for gradual combustion, so that the air-fuel mixture is fully mixed and fully combusted (greatly reducing the emission of toxic gases such as carbon monoxide caused by insufficient combustion, and the full combustion makes the fuel thermal efficiency higher). In the process of continuous combustion, the combing cylinder 6, the inner lining cylinder 11 and the mixing chamber are all high-temperature environments, if the fuel entering the mixing chamber is liquid fuel, it is immediately vaporized and gradually flows and transmits in the instant of entering, the high-temperature flame and flue gas of the combustion cylinder A 9 enter the combustion chamber B of the combustion cylinder B 10 through the flame heat outlet A 911, then mix and enter the combustion chamber C of the combustion cylinder C 13 through the flame heat outlet B 101, and all the air-fuel mixtures are fully combusted, while the flame and high-temperature flue gas of combustion are gradually transmitted and collected in the inner cavity of the combustion cylinder C 13. Since the combustion cylinder C 13 is located inside the evaporation cylinder 15, efficient heat exchange of the water inside the evaporation cylinder 15 (water surrounding the combustion cylinder C 13) is achieved, and the combustion cylinder C 13 increases the heat exchange area and promotes the heat exchange efficiency.
[0036] The combustion cylinder A 9 has a combustion chamber A (i.e. the inner cavity of the combustion cylinder A 9, the bottom of the combustion cylinder A 9 is the chamber inlet A) communicating with the mixing chamber, and the combustion cylinder B 10 has a combustion chamber B (i.e. the inner cavity of the combustion cylinder B 10, the bottom of the combustion cylinder B 10 is covered by the annular bottom plate A 92), as shown, Figure 10 The combustion cylinder A 9 is uniformly provided with a plurality of flame heat outlets A 911 (the flame heat outlets A 911 communicate the combustion chamber A and the combustion chamber B) on the outer surface. The combustion cylinder B 10 is sleeved with the combustion cylinder C 13, and the combustion cylinder C 13 has a combustion chamber C (i.e. the inner cavity of the combustion cylinder C 13, the combustion chamber C is a closed chamber) in the inside. See Figure 11The combustion cylinder B10 is provided with a plurality of flame heat outlets B101 (the flame heat outlets B101 communicate the combustion chamber B and the combustion chamber C). The bottom of the evaporation cylinder 15 is closed by a cylinder bottom plate 151, and the top of the wind box 1 is fixedly connected with the cylinder bottom plate 151 of the evaporation cylinder 15 (in this embodiment, the cylinder bottom plate 151 of the evaporation cylinder 15 is fixedly provided with a mounting plate, and the top of the wind box 1 is detachably fixedly connected with the mounting plate through bolts). The combustion cylinder C13 is sealingly connected with the cylinder bottom plate 151 (the top end of the combustion cylinder C13 is sealingly connected with a cylinder top plate, the bottom end of the combustion cylinder C13 can be sealingly connected with the cylinder bottom plate 151, or the bottom end of the combustion cylinder C13 is open and sealingly connected with the cylinder bottom plate 151, and the inner cavity of the combustion cylinder C13 forms a closed combustion chamber C; similarly, the top surface of the cylinder bottom plate 151 can be fixedly provided with a mounting plate, and the bottom end of the combustion cylinder C13 is detachably fixedly connected with the mounting plate through bolts), and the combustion cylinder C13 is located in the evaporation cylinder cavity of the evaporation cylinder 15.
[0037] The fuel delivery pipe 31 is arranged in the inner lining cylinder 11 of the wind box 1 (the utility model is mainly used for gaseous fuel or liquid fuel, the fuel delivery pipe 31 corresponds to deliver fuel, if the fuel is gaseous fuel, the fuel delivery pipe 31 corresponds to connect and arrange a gas pump; if the fuel is liquid fuel, the fuel delivery pipe 31 corresponds to connect and arrange a pulse pump or a liquid fuel gasification system for spraying water mist, and the liquid fuel gasification system comprises an oil pump and a vaporizer). The inner lining cylinder 11 is provided with an igniter corresponding to the pipe opening of the fuel delivery pipe 31, and the igniter is used for igniting after the fuel is output from the pipe opening of the fuel delivery pipe 31. The smoke exhaust pipe opening of the combustion cylinder C13 is connected with the flue gas heat exchange coil 14 arranged outside the evaporation cylinder 15, the flue gas heat exchange coil 14 is connected with the combustion cylinder C13 and communicates, the high-temperature flue gas of the combustion cylinder C13 enters the flue gas heat exchange coil 14, the flue gas heat exchange coil 14 is arranged inside the evaporation cylinder 15 to perform heat exchange between the high-temperature flue gas and water, and the tail end of the flue gas heat exchange coil 14 is arranged outside the evaporation cylinder 15.
[0038] In some embodiments, as shown in Figure 1 , Figure 3 The bottom of the wind box 1 is connected with the fan box 2, the bottom of the fan box 2 is provided with the air inlet filter hole plate 21 (the air inlet filter hole plate 21 is provided with a plurality of filter holes, and the air inlet filter hole plate 21 is used as the air inlet area of the fan box 2), and the pulse pump 3 corresponding to the fuel tank is arranged in the fan box 2 (the pulse pump 3 can be used for liquid fuel and gaseous fuel). The pulse pump 3 is connected with the fuel delivery pipe 31, and the pulse pump 3 is used for delivering gaseous fuel of a gas source or liquid fuel in a fuel tank. Figure 4 As shown in
[0039] The combustion cylinder C13 is provided with a smoke exhaust opening; as shown in Figure 5As shown, the smoke outlet is sealingly installed with a pipe joint A131, the bottom plate 151 is sealingly installed with a pipe joint B1511, and the smoke heat exchange coil 14 in the evaporation cylinder cavity is sealingly connected between the pipe joint A131 and the pipe joint B1511, and the smoke heat exchange coil 14 is uniformly coiled in the evaporation cylinder 15. The pipe joint B1511 can be connected to a discharge pipe for discharging the heat-exchanged flue gas, and the flue gas in the discharge pipe can be further heat-exchanged to further effectively utilize the heat in the flue gas.
[0040] As shown in FIG. 1, the air inlet chamber is sealingly connected with the air inlet of the air inlet chamber, and the air inlet chamber is sealingly connected with the air inlet of the air inlet chamber. Figure 8 As shown, the combing cylinder 6 is composed of a cylinder body A61 and a top plate A62 located at the top of the cylinder body A61 and sealingly connected with the top end of the cylinder body A61, and the bottom of the cylinder body A61 has an air inlet cylinder port communicating with the air inlet chamber, and the inner cavity of the cylinder body A61 is the air collecting chamber; all the air slots are circumferentially distributed along the surface of the cylinder wall of the cylinder body A61.
[0041] In some embodiments, in all air slots, there are three kinds of layout schemes: all air slots are downwind slots, because all air slots of the cylinder body A61 of the combing cylinder 6 are downwind slots, so that the air blower blows air into the inner cavity of the cylinder body A61, and after passing through all the air slots (the air slots play a role in combing and guiding the air flow, and the air flow after combing and guiding enters the mixing chamber), the clockwise air flow is formed, the clockwise air flow in the mixing chamber is fully mixed with the fuel successively entering the fuel inlet 311, and then uniformly distributed in the whole mixing chamber. During the combustion process, the combing cylinder 6, the inner lining cylinder 11 and the mixing chamber are all high-temperature environments, if liquid fuel is used, the liquid fuel is sprayed into the mixing chamber by a pulse oil pump (the spray can be in the form of water mist), and the liquid fuel is vaporized into a gas in the high-temperature environment of the mixing chamber.
[0042] The second scheme: all air slots are upwind slots, because all air slots of the cylinder body A61 of the combing cylinder 6 are upwind slots, so that the air blower blows air into the inner cavity of the cylinder body A61, and after passing through all the air slots (the air slots play a role in combing and guiding the air flow, and the air flow after combing and guiding enters the mixing chamber), the counterclockwise air flow is formed, the counterclockwise air flow in the mixing chamber is fully mixed with the fuel successively entering the fuel inlet 311, and then uniformly distributed in the whole mixing chamber.
[0043] The third scheme: part of the air slots are downwind slots, and the remaining air slots are upwind slots.
[0044] In the above three schemes, the air outlet is set to be inclined clockwise from the inner wall to the outer wall of the cylinder A61 (so that the air discharged from the air outlet of the cylinder A61 will form a clockwise wind, and then enter the mixing chamber to form a clockwise airflow guidance), and the air outlet is set to be inclined counterclockwise from the inner wall to the outer wall of the cylinder A61 (so that the air discharged from the air outlet of the cylinder A61 will form a counterclockwise wind, and then enter the mixing chamber to form a counterclockwise airflow guidance).
[0045] The further preferred technical solution of the third scheme in this embodiment is as follows: See Figure 8 Of all the air ducts, half are downwind ducts 612, and the other half are upwind ducts 611. Upwind ducts 611 are evenly distributed on one half of the cylinder wall of cylinder A61 (i.e., all upwind ducts 611 constitute downwind duct units and are distributed on one half of the cylinder wall of cylinder A61), and downwind ducts 612 are evenly distributed on the other half of the cylinder wall of cylinder A61 (i.e., all downwind ducts 612 constitute downwind duct units and are distributed on one half of the cylinder wall of cylinder A61). In the actual configuration of this embodiment, the direction in which fuel enters through fuel inlet 311 is the fuel entry direction 3111. Figure 9 As indicated by the arrow, the fuel entering in the fuel inlet direction 3111 is vaporized into gas in a high-temperature environment (if it is a gaseous fuel, vaporization is not required). The fuel inlet 311 is located at the junction of the downwind trough unit and the upwind trough unit. Part of the fuel entering in the fuel inlet direction 3111 moves clockwise under the guidance of the downwind flow of the downwind trough unit and is fully mixed at the same time. The other part moves counterclockwise under the guidance of the upwind flow of the upwind trough unit and is fully mixed at the same time.
[0046] like Figure 10 As shown, the combustion tube A9 consists of a tube body B91 and an annular bottom plate A92 located on the outer side of the bottom of the tube body B91. The annular bottom plate A92 is bolted to the top of the inner liner tube 11 for sealing connection. All flame heat outlets A911 are evenly distributed on the tube wall of the tube body B91.
[0047] like Figure 6 , Figure 8 As shown, a flameout protection detection needle 7 is installed inside the combing cylinder 6. A needle through-hole 63 is opened in the center of the cylinder body A61. The detection needle tip of the flameout protection detection needle 7 passes through the needle through-hole 63 of the cylinder body A61. The detection needle tip of the flameout protection detection needle 7 is placed in the space between the top of the combing cylinder 6 and the combustion cylinder A9 to perform flameout temperature detection and flameout emergency protection. When the flameout protection detection needle 7 detects flameout, it immediately shuts down the pulse pump 2 and the fan 4, or restarts the ignition operation through the igniter. The inner wall of the inner liner cylinder 11 is also covered with a wire mesh 8 (a portion of the fuel is burned on the wire mesh 4).
[0048] In some embodiments, the inner liner 11 is provided with a fuel inlet 311, and a fuel inlet pipe 312 is connected to the fuel inlet 311 and is in sealed connection with the fuel delivery pipe 31. The inner liner 11 is also provided with an igniter mounting hole 5 corresponding to the position of the fuel inlet 311, and an igniter is mounted in the igniter mounting hole 5.
[0049] In use, taking liquid fuel as an example, the fuel delivery pipe 31 (under the power output of the pulse pump 3) sprays the liquid fuel into a water mist from the fuel inlet 311 into the mixing chamber, and the igniter is used to ignite the water mist of liquid fuel. The fan 4 blows air into the wind box 1 through the air inlet A16, and the air is collected in the inner cavity of the air combing cylinder 6 and is guided by each air slot to form the required air flow. The air slot plays a role of combing the air, and the air flow entering the mixing chamber through the air combing cylinder 6 is regularly combed (any one of the three ways of air flow, and the third way of air flow is preferred in this embodiment), which enhances the mixing efficiency of the fuel and the air, realizes more sufficient mixing, and promotes the mixing of the fuel and the air. After the fuel and the air are mixed, the air-fuel mixture is formed, which is ignited for the first time in the mixing chamber (the first ignition can be called pre-combustion or primary combustion. In the process of continuous combustion, the air combing cylinder 6, the inner liner 11 and the mixing chamber are all high-temperature environments. If the fuel entering the mixing chamber is liquid fuel, it will immediately vaporize and gradually transmit), and the air-fuel mixture enters the combustion chamber A (which can be called secondary combustion) of the combustion cylinder A 9, the combustion chamber B (which can be called tertiary combustion) of the combustion cylinder B 10, and the combustion chamber C (which can be called quaternary combustion) of the combustion cylinder C 13 in turn for step-by-step combustion, so that the air-fuel mixture is fully mixed and fully combusted (which greatly reduces the emission of toxic gases such as carbon monoxide caused by incomplete combustion, and fully combusted fuel has higher thermal efficiency).
[0050] In the continuous combustion process, the high-temperature flame and flue gas of the combustion cylinder A9 enter the combustion chamber B of the combustion cylinder B10 through the flame heat outlet A911, then mix and enter the combustion chamber C of the combustion cylinder C13 through the flame heat outlet B101, all the air-fuel mixture is fully combusted, and the combustion flame and high-temperature flue gas are transmitted and collected to the inner cavity of the combustion cylinder C13 in stages and fully participate in heat exchange. The combustion cylinder C13 is located in the evaporation cylinder 15, which realizes efficient heat exchange of the water (water surrounding the combustion cylinder C13) in the evaporation cylinder 15, the combustion cylinder C13 increases the heat exchange area and promotes the heat exchange efficiency. The water in the evaporation cylinder 15 is evaporated into high-temperature water vapor, which can be used as a high-pressure gas power source, can be used to steam food (a circular annular protrusion for placing the annular step 17 is arranged in the evaporation cylinder 15, and a mesh steamer is placed on the annular step 17, such as a steamer, which can be used to place a steamer on the steamer, and the high-temperature water vapor can be used to steam food), and can be used as a heat source to be delivered to other places needing heating or heat exchange.
[0051] The high-temperature flue gas of the fuel combustion is input to the flue gas heat exchange coil 14, and the flue gas heat exchange coil 14 is uniformly spirally arranged in the evaporation cylinder 15, so that the high-temperature flue gas of the flue gas heat exchange coil 14 exchanges heat with the water in the evaporation cylinder 15, effectively utilizes the flue gas heat energy, and improves the heat exchange efficiency.
[0052] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims
1. A vertical closed multi-stage combustion system characterized by: The wind box is internally provided with a lining cylinder, the lining cylinder is internally connected with a combing cylinder through a sealing bottom plate, the top of the lining cylinder is sealingly connected with a combustion cylinder A, and the combustion cylinder A is externally sleeved with a combustion cylinder B.
2. A vertical enclosed multi-stage combustion system as claimed in claim 1, wherein: The wind box is provided with an air inlet chamber, and the wind box is provided with an air inlet A communicating with the air inlet chamber.
3. A vertical enclosed multi-stage combustion system as claimed in claim 2, wherein: The inner cavity of the combing cylinder is in communication with the air inlet chamber of the wind box, and the combing cylinder is circumferentially provided with a plurality of air slots.
4. A vertical enclosed multi-stage combustion system as claimed in claim 1, wherein: The inner wall of the lining cylinder and the outer wall of the combing cylinder form a mixing chamber therebetween.
5. A vertical enclosed multi-stage combustion system as claimed in claim 4, wherein: The combustion cylinder A is internally provided with a combustion chamber A in communication with the mixing chamber, the combustion cylinder B is internally provided with a combustion chamber B, and the combustion cylinder A is uniformly provided with a plurality of flame heat outlets A.
6. A vertical enclosed multi-stage combustion system as claimed in claim 1, wherein: The combustion cylinder C is internally provided with a combustion chamber C, and the combustion cylinder B is provided with a plurality of flame heat outlets B.
7. A vertical enclosed multi-stage combustion system as claimed in claim 6, wherein: The combustion cylinder C is provided with a smoke outlet.
8. A vertical enclosed multi-stage combustion system as claimed in claim 1, wherein: The lining cylinder of the wind box is provided with a fuel delivery pipe, and the pipe opening of the fuel delivery pipe is arranged in the mixing chamber.
9. A vertical enclosed multi-stage combustion system as claimed in claim 6, wherein: The lining cylinder is provided with an igniter corresponding to the pipe opening of the fuel delivery pipe. The bottom of the wind box is connected with a fan box, the bottom of the fan box is provided with an air inlet filter hole plate, the fan box is internally provided with a pulse pump corresponding to the fuel tank and connected with the fuel delivery pipe. The fan box is internally provided with a fan corresponding to the air inlet A. The top of the wind box is sealingly connected with the bottom plate of an evaporation cylinder, the combustion cylinder C is sealingly connected to the bottom plate, the combustion cylinder C is arranged in the evaporation cylinder cavity of the evaporation cylinder, and the combustion cylinder B and the combustion cylinder A are spatially arranged in the evaporation cylinder cavity of the evaporation cylinder. A pipe joint A is sealingly arranged on the smoke outlet, and a pipe joint B is sealingly arranged on the bottom plate. The combing cylinder is composed of a cylinder body A and a top plate A sealingly arranged on the top of the cylinder body A. The bottom of the cylinder body A is provided with an air inlet cylinder opening in communication with the air inlet chamber. All the air slots are circumferentially distributed along the surface of the cylinder wall of the cylinder body A. In all the air slots, all the air slots are downwind slots, or all the air slots are upwind slots, or part of the air slots are downwind slots and the remaining air slots are upwind slots. The downwind slots are arranged in a clockwise direction from the inner wall to the outer wall of the cylinder body A. Half of the cylinder wall of the cylinder body A is uniformly provided with upwind slots, and the other half of the cylinder wall of the cylinder body A is uniformly provided with downwind slots. The combustion cylinder A is composed of a cylinder body B and an annular bottom plate A arranged on the outside of the bottom of the cylinder body B. The top of the lining cylinder is higher than the top of the combing cylinder. The inner cavity of the combing cylinder is provided with a flameout protection probe, the center of the cylinder body A is provided with a needle passing hole, and the detection end of the flameout protection probe corresponds to the needle passing hole of the cylinder body A. The inner wall of the lining cylinder is further provided with a wire mesh.
10. A vertical enclosed multi-stage combustion system as claimed in claim 2, wherein: The inner liner tube is provided with a fuel inlet, and a fuel inlet pipe is connected to the fuel inlet and is in sealed connection with the fuel delivery pipe; the inner liner tube is also provided with an igniter mounting hole corresponding to the position of the fuel inlet, and the igniter is mounted in the igniter mounting hole.