Porous medium combustion heat supply device

Abstract

The invention relates to the technical field of combustors, in particular to a porous medium combustion heat supply device which comprises a porous medium combustion device, the porous medium combustion device comprises a shell, and supporting legs are fixedly installed at the bottom of the shell. Through mutual cooperation of components such as a motor, a rotating rod and a bevel gear A, the motor drives the rotating rod to rotate, so that the rotating rod drives the bevel gear A to rotate, the bevel gear A drives a bevel gear B to rotate, the bevel gear B drives a long rod to rotate, and then the long rod drives three fixing plates to perform circular motion; according to the device, the multiple sleeves are arranged on the fixing plate, so that the fixing plate drives the multiple sleeves to do circular motion, then the multiple sleeves drive the multiple dredging heads to do circular motion, the effect of dredging and cleaning the porous medium plate after combustion is achieved, dust brought by some fuel or air is prevented from blocking pores, flowing resistance is reduced, and combustion efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of burner technology, specifically to a porous medium combustion heating device. Background Technology

[0002] Based on their calorific value, gaseous fuels are generally classified into three categories: high-calorific-value fuels with a calorific value greater than 15.07 MJ / m³; medium-calorific-value fuels with a calorific value between 6.28 and 15.07 MJ / m³; and low-calorific-value fuels with a calorific value less than 6.28 MJ / m³. Conventional porous media burners employ silicon carbide porous media foam with two or more pore diameter structures, stacked along the burner axis. The premixed gas of fuel gas and air enters, for example, through a swirling inlet along the burner axis. The pore size of the porous media increases along the airflow direction. The ignition gun is used to ignite at the outermost outlet of the porous foam ceramic block. After ignition, the flame propagates into the porous media, accelerating the heat transfer from the post-combustion zone to the upstream premixed gas, increasing the flame velocity, and further propelling the flame into the porous media, thus accelerating the thermal equilibrium of the porous media. Compared to previous uniform porous media structures, this structure has certain advantages in enhancing combustion flame stability and preventing backfire.

[0003] A porous media combustion device (publication number: CN214147873U) includes a burner body. The burner body has a swirl inlet, a combustion chamber, a combustion chamber, and a flue gas outlet sequentially connected along the air inlet direction. The combustion chamber contains multiple layers of porous media stacked along the air inlet direction. Each layer of porous media is formed by the accumulation of heat storage elements. Combustion channels connecting the swirl inlet and the combustion chamber are formed within the multiple porous media layers, and the pore size of the combustion channels gradually increases along the air inlet direction. This porous media combustion device enables stable combustion of low- and medium-calorific-value gases.

[0004] However, the aforementioned device, through the cooperation of components such as the burner body and the swirl air inlet, makes it difficult to achieve the effect of clearing and cleaning the porous medium plate after combustion. This results in some dust brought by fuel or air clogging the pores, increasing flow resistance, and disrupting uniform combustion.

[0005] In view of this, we propose a porous medium combustion heating device. Summary of the Invention

[0006] The purpose of this invention is to provide a porous media combustion heating device that solves the problem that after combustion, cleaning the porous media plate can lead to dust from fuel or air clogging the pores, increasing flow resistance, and disrupting uniform combustion.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A porous media combustion heating device includes a porous media combustion device, which comprises a shell, a support leg fixedly installed at the bottom of the shell, an outlet pipe fixedly passing through the top of the shell, an exhaust pipe fixedly passing through the outer surface of the shell, a premixing chamber provided at the bottom of the shell, a connecting pipe fixedly passing through the outer surface of the premixing chamber, and a porous media plate installed inside the shell; it also includes a clearing mechanism for clearing the porous media plate; and an oscillation mechanism for striking the inner wall of the shell; the clearing mechanism includes a long rod rotatably connected to the top of the porous media plate, and a collar fixedly sleeved on the outer surface of the long rod.

[0008] Preferably, the unblocking mechanism further includes a motor, which is fixedly mounted on the outer surface of the housing. The output shaft of the motor is fixedly connected to a rotating rod. A helical gear A passes through the end of the rotating rod away from the motor and is fixedly connected to the helical gear A. A helical gear B passes through the end of the long rod away from the porous media plate and is fixedly connected to the helical gear B. A fixing plate is fixedly connected to the circumference of the long rod. A sleeve is fixedly connected to the bottom of the fixing plate. A spring A is fixedly connected to the inner wall of the sleeve. An unblocking head is fixedly connected to the end of the spring A away from the sleeve.

[0009] Preferably, the helical gear A and the helical gear B mesh with each other, the number of fixed plates is three, and they are arranged circumferentially on the circumferential surface of the long rod. The end of the rotating rod away from the motor passes through the housing and is rotatably connected to the housing.

[0010] Preferably, the oscillation mechanism includes a push rod, one end of which is fixedly connected to the circumferential surface of a collar, a fixing frame is fixedly connected to the inner wall of the housing, a knocking rod passes through the fixing frame away from the inner wall of the housing and is rotatably connected to the knocking rod, and a torsion spring is sleeved on the fixing frame near the knocking rod.

[0011] Preferably, one end of the torsion spring is fixedly connected to the striking rod, and the other end of the torsion spring is fixedly connected to the fixing frame, wherein the fixing frame is L-shaped.

[0012] Preferably, the fixing frame extends through the middle of the striking rod, one end of the striking rod is located on the displacement trajectory of the push rod, and the inner wall of the housing is located on the displacement trajectory of the other end of the striking rod.

[0013] Preferably, the porous medium combustion device is provided with an adjustment mechanism, which includes a ball disposed inside the connecting pipe. A torsion bar is fixedly connected to the outer surface of the ball, and a handle is fixedly connected to the end of the torsion bar away from the ball. A gear passes through the end of the torsion bar near the ball. A sliding plate is slidably connected to the outer surface of the connecting pipe, and a positioning plate is fixedly connected to the outer surface of the connecting pipe. A spring B is fixedly connected to one side of the positioning plate. A push plate is fixedly connected to the side of the sliding plate away from the connecting pipe, and a locking block is fixedly connected to one end of the sliding plate.

[0014] Preferably, the end of the spring B furthest from the positioning plate is fixedly connected to the slide plate, the gear is located on the displacement trajectory of the locking block, and the locking block and the gear mesh with each other.

[0015] Preferably, the outer surface of the sphere is in contact with the inner wall of the connecting pipe, a through hole is provided on the outer surface of the sphere, and the end of the torsion bar away from the sphere passes through the connecting pipe and is rotatably connected to the connecting pipe.

[0016] Preferably, the number of unclogging heads is several, and they are arranged in a linear array below the fixed plate, with the end of the unclogging head away from spring A in contact with the porous medium plate.

[0017] By employing the above technical solution, the present invention provides a porous medium combustion heating device. It possesses at least the following beneficial effects: 1. This invention utilizes the coordinated operation of components such as a motor, a rotating rod, and helical gear A. The motor drives the rotating rod to rotate, which in turn drives helical gear A to rotate. Helical gear A then drives helical gear B to rotate, which in turn drives a long rod to rotate. This long rod then causes three fixed plates to rotate in a circular motion, which in turn causes several sleeves to rotate in a circular motion. These sleeves then drive several unclogging heads in a circular motion. This achieves the effect of cleaning and unclogging the porous media plate after combustion, preventing dust from fuel or air from clogging the pores, reducing flow resistance, and improving combustion efficiency.

[0018] 2. This invention achieves the effect of rotating rod driving the collar to rotate when the rotating rod rotates, which in turn causes the sleeve to drive the push rod to rotate in a circular motion. This causes the push rod to push the knocking rod to strike the inside of the shell, achieving a knocking and oscillating effect, causing the burning residue on the inner wall of the shell to fall off.

[0019] 3. This invention utilizes the cooperation of components such as a ball, a torsion bar, and a handle to achieve the effect of rotating the handle, which in turn drives the torsion bar to rotate, and in turn drives the ball to rotate inside the connecting pipe. This adjusts the contact area between the through hole on the ball and the inner wall of the connecting pipe, thereby regulating the flow rate of the combustible mixture and preventing backfire and blowout. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the invention, form part of this application: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the shell in this invention, viewed from below. Figure 3 This is a cross-sectional three-dimensional structural diagram of the shell in this invention; Figure 4 This is a cross-sectional three-dimensional structural diagram of the sleeve section in this invention; Figure 5 This is a three-dimensional structural diagram of the collar in this invention; Figure 6 This is a cross-sectional three-dimensional structural diagram of the connecting pipe in this invention; Figure 7 This is a three-dimensional structural diagram of the gear in this invention; Figure 8 In this invention Figure 7 A 3D magnified view of A in the middle.

[0021] In the diagram: 1. Porous medium combustion device; 101. Shell; 102. Support leg; 103. Gas outlet pipe; 104. Exhaust pipe; 105. Premixing chamber; 106. Connecting pipe; 107. Porous medium plate; 2. Unblocking mechanism; 201. Motor; 202. Rotating rod; 203. Helical gear A; 204. Long rod; 205. Fixing plate; 206. Sleeve; 207. Spring A; 208. Unblocking head; 209. Helical gear B; 3. Vibration mechanism; 301. Collar; 302. Push rod; 303. Fixing frame; 304. Knocking rod; 305. Torsion spring; 4. Adjusting mechanism; 401. Ball; 402. Torsion bar; 403. Handle; 404. Gear; 405. Slide plate; 406. Positioning plate; 407. Spring B; 408. Push plate; 409. Locking block. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] A porous medium combustion heating device, such as Figure 1 - Figure 8As shown, the device includes a porous media combustion device 1, which includes a housing 101. A support leg 102 is fixedly installed at the bottom of the housing 101. An exhaust pipe 103 is fixedly inserted through the top of the housing 101. An exhaust pipe 104 is fixedly inserted through the outer surface of the housing 101. A premixing chamber 105 is provided at the bottom of the housing 101. A connecting pipe 106 is fixedly inserted through the outer surface of the premixing chamber 105. A porous media plate 107 is installed inside the housing 101. The device also includes a clearing mechanism 2 for clearing the porous media plate 107 and an oscillation mechanism 3 for striking the inner wall of the housing 101. The clearing mechanism 2 includes a long rod 204, which is rotatably connected to the top of the porous media plate 107. A collar 301 is fixedly sleeved on the outer surface of the long rod 204.

[0024] The unblocking mechanism 2 also includes a motor 201, which is fixedly installed on the outer surface of the housing 101. The output shaft of the motor 201 is fixedly connected to a rotating rod 202. A helical gear A203 passes through the end of the rotating rod 202 away from the motor 201 and is fixedly connected to the helical gear A203. A helical gear B209 passes through the end of the long rod 204 away from the porous media plate 107 and is fixedly connected to the helical gear B209. A fixing plate 205 is fixedly connected to the circumferential surface of the long rod 204. A sleeve 206 is fixedly connected to the bottom of the fixing plate 205. A spring A207 is fixedly connected to the inner wall of the sleeve 206. An unblocking head 208 is fixedly connected to the end of the spring A207 away from the sleeve 206. The above design is beneficial for unblocking the accumulated dust in the holes of the porous media plate 107.

[0025] Helical gear A203 meshes with helical gear B209. There are three fixed plates 205, which are arranged circumferentially on the circumferential surface of the long rod 204. The end of the rotating rod 202 away from the motor 201 passes through the housing 101 and is rotatably connected to the housing 101. The above design is conducive to the mutual meshing of helical gear A203 and helical gear B209, so that when helical gear A203 rotates, it can drive helical gear B209 to rotate.

[0026] The oscillation mechanism 3 includes a push rod 302. One end of the push rod 302 is fixedly connected to the circumferential surface of the collar 301. A fixing frame 303 is fixedly connected to the inner wall of the housing 101. A knocking rod 304 passes through the end of the fixing frame 303 away from the inner wall of the housing 101 and is rotatably connected to the knocking rod 304. A torsion spring 305 is sleeved on the end of the fixing frame 303 near the knocking rod 304. The above design is beneficial for striking the inner wall of the housing 101 to achieve the effect of knocking oscillation.

[0027] One end of the torsion spring 305 is fixedly connected to the knocking rod 304, and the other end of the torsion spring 305 is fixedly connected to the fixing frame 303. The fixing frame 303 is L-shaped. The above design is conducive to the reset of the knocking rod 304 by the torsion spring 305 after the knocking rod 304 is rotated, through the fixed connection between the torsion spring 305 and the knocking rod 304.

[0028] The fixed frame 303 passes through the middle of the knocking rod 304. One end of the knocking rod 304 is located on the displacement trajectory of the push rod 302, and the inner wall of the housing 101 is located on the displacement trajectory of the other end of the knocking rod 304. The above design is beneficial because the knocking rod 304 is located on the displacement trajectory of the push rod 302, so that the push rod 302 can push the knocking rod 304 to rotate around the fixed frame 303 as the origin when it is displaced.

[0029] The porous medium combustion device 1 is equipped with an adjustment mechanism 4. The adjustment mechanism 4 includes a ball 401, which is disposed inside the connecting pipe 106. A torsion bar 402 is fixedly connected to the outer surface of the ball 401. A handle 403 is fixedly connected to the end of the torsion bar 402 away from the ball 401. A gear 404 passes through the end of the torsion bar 402 near the ball 401. A sliding plate 405 is slidably connected to the outer surface of the connecting pipe 106. A positioning plate 406 is fixedly connected to the outer surface of the connecting pipe 106. A spring B 407 is fixedly connected to one side of the positioning plate 406. A push plate 408 is fixedly connected to the side of the sliding plate 405 away from the connecting pipe 106. A locking block 409 is fixedly connected to one end of the sliding plate 405. The above design is beneficial for adjusting the flow rate of the combustible mixture and avoids backfire and blowout.

[0030] The end of spring B407 away from the positioning plate 406 is fixedly connected to the slide plate 405. Gear 404 is located on the displacement trajectory of the locking block 409. The locking block 409 and gear 404 mesh with each other. The above design is conducive to the reset of the slide plate 405 by fixing spring B407 to the slide plate 405.

[0031] The outer surface of the ball 401 is in contact with the inner wall of the connecting pipe 106. A through hole is provided on the outer surface of the ball 401. The end of the torsion bar 402 away from the ball 401 passes through the connecting pipe 106 and is rotatably connected to the connecting pipe 106. The above design is beneficial to adjust the flow rate by changing the contact area between the outer surface of the ball 401 and the inner wall of the connecting pipe 106 through the contact between the outer surface of the ball 401 and the inner wall of the connecting pipe 106.

[0032] The number of unclogging heads 208 is several, and they are arranged in a linear array below the fixed plate 205. The end of the unclogging head 208 away from the spring A207 is in contact with the porous media plate 107. The above design is beneficial to the unclogging head 208 being pushed out of the sleeve 206 by the spring A207 when it encounters a hole in the porous media plate 107, thereby unclogging the porous media plate 107.

[0033] In the use of the porous media combustion heating device of the present invention, the combustible gas mixture first enters the system through the connecting pipe 106. The regulating mechanism 4 plays a key role here. The operator can rotate the handle 403 to drive the torsion bar 402 and the ball 401 at its end to rotate within the connecting pipe 106. The surface of the ball 401 has through holes. By changing the relative position and overlapping area of ​​the through holes with the inner wall of the connecting pipe 106, the flow cross section of the combustible gas mixture can be precisely controlled, thereby steplessly adjusting its intake flow rate. This design effectively avoids unstable combustion phenomena such as "backfire" or "blowing out" caused by improper flow rate, ensuring the basic safety and controllability of the combustion process. The regulated gas enters the premixing chamber 105 for thorough mixing. Subsequently, the uniformly mixed combustible gas enters the interior of the shell 101 and burns in the porous media plate 107. The porous media plate 107 has a huge specific surface area and heat storage capacity, which can "lock" the flame inside its pores to achieve flameless combustion or superenthalpic combustion. This combustion method features uniform temperature distribution, high thermal efficiency, and low emissions of pollutants such as nitrogen oxides. Part of the heat generated by combustion is output through the exhaust pipe 103 via convection and radiation for heating, while the other part is absorbed and stored by the porous media plate 107 itself to preheat subsequent mixed gases, forming an efficient heat cycle. Some exhaust gas can be discharged through the exhaust pipe 104. After long-term operation, impurities in the fuel or air may accumulate in the pores of the porous media plate 107, increasing flow resistance and disrupting combustion uniformity. Therefore, the device is equipped with a cleaning mechanism 2. When cleaning is required, the motor 201, fixed to the outer wall of the housing 101, is activated. Its output shaft drives the rotating rod 202 and the helical gear A203 mounted on it to rotate. The helical gear A203 meshes with the helical gear B209 fixed to the long rod 204, transmitting power and causing the long rod 204 to rotate on top of the porous media plate 107. Three fixed plates 205 evenly distributed circumferentially along the long rod 204 rotate accordingly. Each fixed plate 205 has multiple sleeves 206 installed at its bottom, each sleeve containing a spring A207 and a cleaning head 208. When the cleaning head 208 encounters a hole in the porous media plate 107 during rotation, it is pushed out by the elastic force of the spring A207, penetrating deep into the pores to break up or push out accumulated ash, achieving dynamic and efficient online cleaning, significantly reducing maintenance costs and workload. Simultaneously, to remove any combustion residue that may adhere to the inner wall of the housing 101, the device also integrates an oscillation mechanism 3. As the long rod 204 rotates, the collar 301 fixed to it drives the push rod 302 in a circular motion. During this motion, the push rod 302 periodically strikes one end of the striking rod 304, maintaining its initial position under the action of the torsion spring 305. When one end is pushed by push rod 302, knocking rod 304 rotates around the hinge point, and its other end quickly strikes the inner wall of housing 101, generating an oscillating wave. Under the action of torsion spring 305, knocking rod 304 quickly returns to its original position, ready for the next strike.The continuous tapping and vibration loosens and peels off the ash and scale on the inner wall, thus keeping the inside of the combustion chamber clean.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A porous medium combustion heating device, comprising a porous medium combustion device (1), characterized in that: The porous medium combustion device (1) includes a housing (101), a support leg (102) is fixedly installed at the bottom of the housing (101), an exhaust pipe (103) is fixedly passed through the top of the housing (101), an exhaust pipe (104) is fixedly passed through the outer surface of the housing (101), a premixing chamber (105) is provided at the bottom of the housing (101), a connecting pipe (106) is fixedly passed through the outer surface of the premixing chamber (105), and a porous medium plate (107) is installed inside the housing (101). It also includes a dredging mechanism (2) for dredging the porous media plate (107). An oscillation mechanism (3) is used to strike the inner wall of the housing (101); The unblocking mechanism (2) includes a long rod (204), which is rotatably connected to the top of the porous media plate (107), and a collar (301) is fixedly sleeved on the outer surface of the long rod (204).

2. The porous medium combustion heating device according to claim 1, characterized in that: The unblocking mechanism (2) also includes a motor (201), which is fixedly installed on the outer surface of the housing (101). The output shaft of the motor (201) is fixedly connected to a rotating rod (202). The end of the rotating rod (202) away from the motor (201) is connected to a helical gear A (203) and is fixedly connected to the helical gear A (203). The end of the long rod (204) away from the porous media plate (107) is connected to a helical gear B (209) and is fixedly connected to the helical gear B (209). A fixing plate (205) is fixedly connected to the circumferential surface of the long rod (204). A sleeve (206) is fixedly connected to the bottom of the fixing plate (205). A spring A (207) is fixedly connected to the inner wall of the sleeve (206). An unblocking head (208) is fixedly connected to the end of the spring A (207) away from the sleeve (206).

3. The porous medium combustion heating device according to claim 2, characterized in that: The helical gear A (203) meshes with the helical gear B (209), the number of fixed plates (205) is three, and they are arranged circumferentially on the circumferential surface of the long rod (204). The end of the rotating rod (202) away from the motor (201) passes through the housing (101) and is rotatably connected to the housing (101).

4. The porous medium combustion heating device according to claim 1, characterized in that: The oscillation mechanism (3) includes a push rod (302), one end of which is fixedly connected to the circumferential surface of the collar (301). A fixing frame (303) is fixedly connected to the inner wall of the housing (101). A knocking rod (304) passes through the end of the fixing frame (303) away from the inner wall of the housing (101) and is rotatably connected to the knocking rod (304). A torsion spring (305) is sleeved on the end of the fixing frame (303) near the knocking rod (304).

5. A porous medium combustion heating device according to claim 4, characterized in that: One end of the torsion spring (305) is fixedly connected to the knocking rod (304), and the other end of the torsion spring (305) is fixedly connected to the fixing frame (303), which is L-shaped.

6. The porous medium combustion heating device according to claim 4, characterized in that: The fixing frame (303) passes through the middle of the striking rod (304), one end of the striking rod (304) is located on the displacement trajectory of the push rod (302), and the inner wall of the housing (101) is located on the displacement trajectory of the other end of the striking rod (304).

7. A porous medium combustion heating device according to claim 1, characterized in that: The porous medium combustion device (1) is provided with an adjustment mechanism (4). The adjustment mechanism (4) includes a ball (401) which is located inside the connecting pipe (106). A torsion bar (402) is fixedly connected to the outer surface of the ball (401). A handle (403) is fixedly connected to the end of the torsion bar (402) away from the ball (401). A gear (404) passes through the end of the torsion bar (402) near the ball (401). A sliding plate (405) is slidably connected to the outer surface of the connecting pipe (106). A positioning plate (406) is fixedly connected to the outer surface of the connecting pipe (106). A spring B (407) is fixedly connected to one side of the positioning plate (406). A push plate (408) is fixedly connected to the side of the sliding plate (405) away from the connecting pipe (106). A locking block (409) is fixedly connected to one end of the sliding plate (405).

8. A porous medium combustion heating device according to claim 7, characterized in that: The end of the spring B (407) away from the positioning plate (406) is fixedly connected to the slide plate (405), the gear (404) is located on the displacement trajectory of the block (409), and the block (409) and the gear (404) mesh with each other.

9. A porous medium combustion heating device according to claim 7, characterized in that: The outer surface of the sphere (401) is in contact with the inner wall of the connecting pipe (106). A through hole is provided on the outer surface of the sphere (401). The end of the torsion bar (402) away from the sphere (401) passes through the connecting pipe (106) and is rotatably connected to the connecting pipe (106).

10. A porous medium combustion heating device according to claim 2, characterized in that: The number of the unclogging heads (208) is several, and they are arranged in a linear array below the fixed plate (205). The end of the unclogging head (208) away from the spring A (207) is in contact with the porous medium plate (107).

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