Method for improving combustion efficiency of boiler and boiler device thereof
Through water filtration and conical air curtain technology, the problems of insufficient fuel mixing and scale accumulation of boilers are solved, combustion efficiency is improved, and waste heat is utilized through the spiral flow of flue gas, achieving efficient thermal energy utilization and reducing steam leakage.
Patent Information
- Application Number
- CN202411296759.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2024-12-24
AI Technical Summary
The existing boilers have low combustion efficiency, mainly due to insufficient mixing of fuel and combustion-supporting gas, low scale accumulation and waste heat utilization efficiency.
Impurities are removed by water filtration, and a conical air curtain is formed to fully mix the fuel gas and the combustion-supporting gas, and the waste heat is utilized by the spiral flow of the flue gas to improve combustion efficiency.
It effectively improves the boiler combustion efficiency, reduces the impact of scale accumulation, improves the heat utilization efficiency, and prevents steam leakage through leakage detection.
Smart Images

Figure CN119178150A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of boilers, and in particular relates to a method for improving boiler combustion efficiency and a boiler device thereof. Background Art
[0002] A boiler is an energy conversion device. The energy input to the boiler includes chemical energy and electrical energy in the fuel. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. The boiler consists of two major parts: the pot and the furnace. The hot water or steam produced in the boiler can directly provide the required thermal energy for industrial production and people's lives, or it can be converted into mechanical energy through a steam power device, or the mechanical energy can be converted into electrical energy through a generator. A boiler that provides hot water is called a hot water boiler, which is mainly used for life and also has a small number of applications in industrial production. A boiler that produces steam is called a steam boiler, often referred to as a boiler, and is mostly used in thermal power plants, ships, locomotives, and industrial and mining enterprises.
[0003] In the prior art, a boiler is usually composed of a furnace body and a combustion part. During use, the combustion efficiency of such a conventional boiler is usually reduced due to insufficient mixing of fuel and combustion-supporting gas, fouling, low efficiency of waste heat utilization, etc. Therefore, it is necessary to make improvements to improve the combustion efficiency of the boiler. Summary of the invention
[0004] The purpose of the present invention is to provide a method for improving boiler combustion efficiency and a boiler device thereof in order to improve the combustion efficiency of the boiler in view of the above-mentioned technical problems.
[0005] In view of this, the present invention provides a method for improving boiler combustion efficiency, comprising the following steps:
[0006] S1 water input, input water into the boiler and filter the water during input to remove particulate impurities, bacteria, organic matter, heavy metals and acid ions in the water;
[0007] S2 gas input, which delivers gas to the boiler and forms a conical air curtain during the gas output process;
[0008] S3 combustion-supporting gas input, the combustion-supporting gas is input into the boiler at the same time as the fuel gas is input, and the combustion-supporting gas is fully mixed with the fuel gas when passing through the conical air curtain formed by the fuel gas;
[0009] S4 ignition, the fuel gas is mixed with the combustion-supporting gas and then the mixed gas is ignited and burned;
[0010] S5 utilizes waste heat from flue gas. During the flue gas emission process, the flue gas is made to flow in a spiral shape in the boiler, during which the water fully absorbs the heat carried by the flue gas.
[0011] In the present technical solution, during the use of the boiler, the water is pre-filtered to reduce the impurities in the water that may cause scaling, so that the boiler is not prone to scaling during long-term use, reducing the impact of scaling on the boiler combustion efficiency. At the same time, the combustion efficiency of the boiler is further improved by fully mixing the fuel gas and the combustion-supporting gas, and the spiral flow of the flue gas in the boiler during the emission process can further improve the heat utilization efficiency.
[0012] In the above technical solution, further, the present invention also discloses a boiler device, comprising:
[0013] A furnace body, the top of which is provided with a smoke exhaust port, a water inlet pipe, a pressure relief valve, a steam exhaust pipe, a steam delivery pipe and a drain pipe;
[0014] A combustion part, the combustion part comprising an air inlet shell arranged at one side of the furnace body and a combustion tube arranged in the furnace body;
[0015] A backfire chamber, the backfire chamber is arranged in the furnace body and communicated with the combustion tube;
[0016] A smoke exhaust pipe, one end of which is connected to the backfire chamber, and the other end of which extends in a spiral shape along the axial direction of the furnace body and is connected to the smoke exhaust port;
[0017] Wherein, the air intake shell is communicated with the combustion tube.
[0018] In the above technical solution, further, the combustion unit also includes:
[0019] A gas delivery pipe, the gas delivery pipe is arranged on the air inlet shell, and the gas outlet end combustion pipe of the gas delivery pipe is connected with the air inlet shell;
[0020] A conical valve, the conical valve being arranged at the gas outlet end of the gas inlet pipe;
[0021] A combustion-supporting gas delivery pipe, wherein the combustion-supporting gas delivery pipe is arranged on the air intake shell and communicated with the interior of the air intake shell;
[0022] An igniter is arranged on the air intake housing.
[0023] In the above technical solution, further, it also includes:
[0024] A regulating valve is arranged in series on the gas delivery pipe for regulating the gas delivery flow.
[0025] In the above technical solution, further, it also includes:
[0026] The water treatment mechanism is arranged on the water inlet pipe and is used to remove particulate impurities, bacteria, organic matter, heavy metals and acid ions in the water.
[0027] In the above technical solution, further, the water treatment mechanism also includes:
[0028] A filter tube, wherein the filter tube is arranged in series on the water inlet pipe;
[0029] A plurality of filter frames, which are arranged in the filter tube and spaced apart along the axial direction of the filter tube, and a filter layer is arranged in the filter frame;
[0030] A cleaning brush, wherein the cleaning brush is arranged in the filter tube, and a plurality of the cleaning brushes are arranged corresponding to the filter layer, and the cleaning brush is provided with bristles contacting the filter surface of the filter layer;
[0031] A cleaning motor, which is arranged in the filter tube and is used to drive the cleaning brush to rotate;
[0032] An impurity collection box, wherein the impurity collection box is arranged at the bottom of the filter tube;
[0033] Wherein, a sedimentation hole connected to the impurity collection box is arranged at the bottom of the filter tube.
[0034] In the above technical solution, further, it also includes:
[0035] A leakage detection mechanism is provided at the connection between the steam exhaust pipe and the steam delivery pipe for monitoring steam leakage.
[0036] In the above technical solution, further, the leakage detection mechanism also includes:
[0037] A sealing sleeve, the sealing sleeve is composed of two half sleeves, the sealing sleeve is arranged at the connection between the steam exhaust pipe and the steam delivery pipe, and a sealing cavity is arranged in the sealing sleeve;
[0038] A pressure sensing unit, the pressure sensing unit is disposed in the sealed cavity and is used to monitor changes in air pressure in the sealed cavity;
[0039] A flow rate sensing unit is arranged in the sealed cavity to monitor changes in the airflow in the sealed cavity.
[0040] In the above technical solution, further, it also includes:
[0041] If the interference flow rod is arranged in the combustion tube.
[0042] The beneficial effects of the present invention are:
[0043] 1. The combustion efficiency of the boiler is effectively improved by improving water quality and increasing the mixing degree of fuel gas and combustion-supporting gas;
[0044] 2. The water treatment mechanism is set up to effectively remove particulate impurities, bacteria, organic matter, heavy metals and acid ions in the water, thereby reducing the impurities in the water that may cause scaling, making it less likely for the boiler to scale during long-term use, reducing the impact of scaling on the boiler's combustion efficiency, and thus improving the boiler's combustion efficiency;
[0045] 3. The conical valve is set to form a conical air curtain during the gas output process. The combustion-supporting gas is fully mixed with the gas when passing through the conical air curtain formed by the gas, further improving the combustion efficiency of the boiler;
[0046] 4. The setting of the leakage detection mechanism can effectively monitor the leakage in the steam transportation process, prevent the waste of steam caused by steam leakage and affect the internal pressure of the boiler. BRIEF DESCRIPTION OF THE DRAWINGS
[0047] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0048] Figure 1 It is a schematic structural diagram of a specific implementation method of the present invention.
[0049] Figure 2 It is a schematic diagram of the top view structure of the present invention.
[0050] Figure 3 It is a schematic diagram of the combustion unit structure of the present invention.
[0051] Figure 4 It is a schematic diagram of the internal structure of the furnace body of the present invention.
[0052] Figure 5 It is a schematic diagram of the structure of the water treatment mechanism of the present invention.
[0053] Figure 6 It is a schematic diagram of the sealing sleeve structure of the present invention.
[0054] The symbols in the figure are:
[0055] 1. Furnace body; 2. Smoke exhaust port; 3. Water inlet pipe; 4. Pressure relief valve; 5. Steam exhaust pipe; 6. Steam delivery pipe; 7. Drain pipe; 8. Combustion part; 80. Air inlet shell; 81. Combustion pipe; 82. Gas delivery pipe; 83. Conical valve; 84. Combustion-supporting gas delivery pipe; 85. Ignitor; 86. Regulating valve; 9. Backfire chamber; 10. Smoke exhaust pipe; 11. Water treatment mechanism; 12. Filter pipe; 13. Filter frame; 14. Filter layer; 15. Cleaning brush; 16. Cleaning motor; 17. Impurity collection box; 18. Sedimentation hole; 19. Leakage detection mechanism; 20. Sealing sleeve; 21. Sealing chamber; 22. Pressure sensing unit; 23. Flow rate sensing unit. DETAILED DESCRIPTION
[0056] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0057] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.
[0058] Embodiment 1:
[0059] The present invention provides a method for improving boiler combustion efficiency, comprising the following steps:
[0060] S1 water input, input water into the boiler and filter the water during input to remove particulate impurities, bacteria, organic matter, heavy metals and acid ions in the water;
[0061] S2 gas input, which delivers gas to the boiler and forms a conical air curtain during the gas output process;
[0062] S3 combustion-supporting gas input, the combustion-supporting gas is input into the boiler at the same time as the fuel gas is input, and the combustion-supporting gas is fully mixed with the fuel gas when passing through the conical air curtain formed by the fuel gas;
[0063] S4 ignition, the fuel gas is mixed with the combustion-supporting gas and then the mixed gas is ignited and burned;
[0064] S5 utilizes waste heat from flue gas. During the flue gas emission process, the flue gas is made to flow in a spiral shape in the boiler, during which the water fully absorbs the heat carried by the flue gas.
[0065] In this embodiment, during the use of the boiler, water is pre-filtered to reduce impurities in the water that may cause scaling, making it less likely for scaling to occur during long-term use of the boiler, thereby reducing the effect of scaling on the combustion efficiency of the boiler. At the same time, the combustion efficiency of the boiler is further improved by fully mixing the fuel gas and the combustion-supporting gas, and the spiral flow of the flue gas in the boiler during the emission process can further improve the heat utilization efficiency.
[0066] Embodiment 2:
[0067] The present embodiment provides a boiler device, which, in addition to the technical solutions of the above embodiments, also has the following technical features. The present invention also discloses a boiler device, including: a furnace body 1, the top of which is provided with a smoke exhaust port 2, a water inlet pipe 3, a pressure relief valve 4, a steam exhaust pipe 5, a steam delivery pipe 6 and a drain pipe 7; a combustion part 8, the combustion part 8 includes an air intake shell 80 arranged on one side of the furnace body 1 and a combustion pipe 81 arranged in the furnace body 1; a backfire chamber 9, the backfire chamber 9 is arranged in the furnace body 1 and communicated with the combustion pipe 81; a smoke exhaust pipe 10, one end of the smoke exhaust pipe 10 is communicated with the backfire chamber 9, and the other end extends in a spiral shape along the axial direction of the furnace body 1 and communicates with the smoke exhaust port 2;
[0068] The air intake shell 80 is connected to the combustion tube 81 .
[0069] Furthermore, the smoke exhaust port 2 may be externally connected to a conventional heat recovery device, such as a heat recovery device composed of an economizer and a condenser.
[0070] In the present embodiment, the fuel gas and the combustion-supporting gas are input into at least the combustion tube 81 through the combustion section 8 for combustion. The provision of the reburning chamber 9 can further provide a combustion space, so that the fuel gas is completely burned through the reburning chamber 9 after being burned in the combustion tube 81, thereby reducing the carbon deposits in the combustion tube 81 and improving the combustion efficiency. The smoke generated during the combustion process is discharged through the smoke exhaust pipe 10. The smoke exhaust pipe 10 allows the smoke to flow in a spiral shape, thereby further utilizing the waste heat of the smoke and improving the heat utilization efficiency.
[0071] Embodiment 3:
[0072] The present embodiment provides a boiler device, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features, the combustion section 8 also includes: a gas delivery pipe 82, the gas delivery pipe 82 is arranged on the air inlet shell 80, the gas outlet end of the gas delivery pipe 82 is connected to the connection between the combustion pipe 81 and the air inlet shell 80; a conical valve 83, the conical valve 83 is arranged at the air outlet end of the gas input pipe; a combustion-supporting gas delivery pipe 84, the combustion-supporting lifting delivery pipe is arranged on the air inlet shell 80 and is connected to the inside of the air inlet shell 80; an igniter 85, the igniter 85 is arranged on the air inlet shell 80.
[0073] It also includes: a regulating valve 86, which is arranged in series on the gas delivery pipe 82 to adjust the gas delivery flow rate.
[0074] In the present embodiment, the fuel gas is transported to the fuel gas pipe through the fuel gas delivery pipe 82. The fuel gas passes through the conical valve 83 during the output process so that the fuel gas forms a conical wind curtain during the output process. At the same time as the fuel gas is input, the combustion-supporting gas is input into the air inlet shell 80 through the combustion-supporting gas delivery pipe 84 and transported to the fuel gas pipe from the air inlet shell 80. The combustion-supporting gas is fully mixed with the fuel gas when passing through the conical wind curtain formed by the fuel gas. After the fuel gas and the combustion-supporting gas are mixed, the mixed gas is ignited and burned. The user can adjust the fuel gas delivery flow rate according to needs through the regulating valve 86. Compared with the prior art, the present invention can fully mix the fuel gas and the combustion-supporting gas, thereby improving the combustion efficiency of the boiler.
[0075] Embodiment 4:
[0076] This embodiment provides a boiler device, which, in addition to the technical solutions of the above embodiments, also has the following technical features, including: a water treatment mechanism 11, which is arranged on the water inlet pipe 3 to remove particulate impurities, bacteria, organic matter, heavy metals and acid ions in the water.
[0077] The water treatment mechanism 11 also includes: a filter tube 12, which is arranged in series on the water inlet pipe 3; a plurality of filter frames 13, which are arranged in the filter tube 12 and spaced apart along the axial direction of the filter tube 12, and a filter layer 14 is arranged in the filter frame 13; a cleaning brush 15, which is arranged in the filter tube 12, and a plurality of cleaning brushes 15 are arranged corresponding to the filter layer 14, and bristles contacting the filter surface of the filter layer 14 are arranged on the cleaning brush 15; a cleaning motor 16, which is arranged in the filter tube 12 and used to drive the cleaning brush 15 to rotate; an impurity collection box 17, which is arranged at the bottom of the filter tube 12;
[0078] The bottom of the filter tube 12 is provided with a sedimentation hole 18 which is connected to the impurity collection box 17 .
[0079] Moreover, the plurality of filter layers 14 can be made of different filter materials, such as activated carbon filter material, resin filter material, composite activated carbon filter material, etc. The cleaning motor 16 can be fixed in the filter tube 12 by a conventional cross-shaped mounting bracket. The driving end of the cleaning motor 16 extends along the axial direction of the filter tube 12 and is connected to the screw cleaning brush 15 to drive the cleaning brush 15 to rotate.
[0080] In this embodiment, when water is transported to the inside of the boiler and passes through the filter tube 12, the filter layer 14 in the plurality of filter frames 13 can effectively remove particulate impurities, bacteria, organic matter, heavy metals and acid ions in the water, so that the boiler is not prone to fouling during long-term use, reducing the impact of fouling on the boiler combustion efficiency, thereby effectively improving the combustion effect of the boiler. At the same time, the cleaning brush 15 is driven to rotate by the cleaning motor 16, and the cleaning brush 15 can effectively clean the impurities attached to the filter surface of the filter layer 14, thereby ensuring the filtering effect of the filter layer 14 and improving the working stability of the water treatment mechanism 11. The cleaned impurities can be deposited in the impurity collection box 17 through the deposition hole 18.
[0081] Embodiment 5:
[0082] This embodiment provides a boiler device, which, in addition to the technical solutions of the above embodiments, also has the following technical features, including: a leakage detection mechanism 19, which is arranged at the connection between the steam exhaust pipe 5 and the steam delivery pipe 6 to monitor steam leakage.
[0083] The leakage detection mechanism 19 also includes: a sealing sleeve 20, which is composed of two half sleeves. The sealing sleeve 20 is arranged at the connection between the steam exhaust pipe 5 and the steam delivery pipe 6, and a sealing cavity 21 is arranged in the sealing sleeve 20; a pressure sensing unit 22, which is arranged in the sealing cavity 21 for monitoring the air pressure change in the sealing cavity 21; and a flow rate sensing unit 23, which is arranged in the sealing cavity 21 for monitoring the air flow change in the sealing cavity 21.
[0084] Moreover, the pressure sensing unit 22 and the flow rate sensing unit 23 are both conventional sensing elements, and both can be connected to external conventional terminals for feedback.
[0085] In this embodiment, the sealing sleeve 20 can be installed at the connection between the steam exhaust pipe 5 and the steam delivery pipe 6 by matching the two half sleeves. After the sealing sleeve 20 is installed, the sealing cavity is a cavity with normal pressure and static airflow. When steam leaks here, the sealing cavity is affected by the steam, resulting in pressure changes and airflow. At this time, the pressure sensing unit 22 and the flow rate sensing unit 23 can sense the pressure changes and airflow changes, so as to promptly prompt the user of the leakage through the external terminal, so as to facilitate the user to maintain the boiler in time and prevent the steam leakage from further expanding, resulting in steam waste and the internal pressure of the boiler being affected.
[0086] Embodiment 6:
[0087] This embodiment provides a boiler device, which, in addition to the technical solutions of the above embodiments, also has the following technical features, including: if the disruptor flow rod is arranged in the combustion tube 81.
[0088] In this embodiment, the provision of the turbulence rods can further improve the mixing degree of the fuel gas and the combustion-supporting gas, thereby further improving the combustion efficiency of the boiler.
[0089] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.
Claims
1. A method for improving boiler combustion efficiency, characterized in that: The following steps are involved: S1 water input, input water into the boiler and filter the water during input to remove particulate impurities, bacteria, organic matter, heavy metals and acid ions in the water; S2 gas input, which delivers gas to the boiler and forms a conical air curtain during the gas output process; S3 combustion-supporting gas input, the combustion-supporting gas is input into the boiler at the same time as the fuel gas is input, and the combustion-supporting gas is fully mixed with the fuel gas when passing through the conical air curtain formed by the fuel gas; S4 ignition, the fuel gas is mixed with the combustion-supporting gas and then the mixed gas is ignited and burned; S5 utilizes waste heat from flue gas. During the flue gas emission process, the flue gas is made to flow in a spiral shape in the boiler, during which the water fully absorbs the heat carried by the flue gas.
2. A boiler device applicable to the method for improving boiler combustion efficiency according to claim 1, characterized in that: include: A furnace body (1), wherein the top of the furnace body (1) is provided with a smoke exhaust port (2), a water inlet pipe (3), a pressure relief valve (4), a steam exhaust pipe (5), a steam delivery pipe (6) and a drain pipe (7); A combustion section (8), the combustion section (8) comprising an air intake shell (80) arranged on one side of the furnace body (1) and a combustion tube (81) arranged inside the furnace body (1); A backfire chamber (9), the backfire chamber (9) being arranged in the furnace body (1) and communicating with the combustion tube (81); a smoke exhaust pipe (10), one end of which is connected to the re-ignition chamber (9), and the other end of which extends in a spiral shape along the axial direction of the furnace body (1) and is connected to the smoke exhaust port (2); Wherein, the air intake shell (80) is communicated with the combustion tube (81).
3. A boiler device according to claim 2, characterized in that: The combustion unit (8) further comprises: A gas delivery pipe (82), the gas delivery pipe (82) being arranged on the gas inlet shell (80), the gas outlet end of the gas delivery pipe (82) being connected to the gas inlet shell (80); A conical valve (83), the conical valve (83) being arranged at the gas outlet end of the gas inlet pipe; A combustion-supporting gas delivery pipe (84), wherein the combustion-supporting gas delivery pipe is arranged on the air intake shell (80) and is in communication with the interior of the air intake shell (80); An igniter (85) is arranged on the air intake housing (80).
4. A boiler device according to claim 3, characterized in that: Also includes: A regulating valve (86) is arranged in series on the gas delivery pipe (82) for regulating the gas delivery flow rate.
5. A boiler device according to claim 3, characterized in that: Also includes: A water treatment mechanism (11) is arranged on the water inlet pipe (3) and is used to remove particulate impurities, bacteria, organic matter, heavy metals and acid ions in water.
6. A boiler device according to claim 5, characterized in that: The water treatment mechanism (11) further comprises: A filter tube (12), wherein the filter tube (12) is arranged in series on the water inlet pipe (3); A plurality of filter frames (13), the plurality of filter frames (13) being arranged in the filter tube (12) and spaced apart along the axial direction of the filter tube (12), wherein a filter layer (14) is arranged in the filter frame (13); A cleaning brush (15), the cleaning brush (15) being arranged in the filter tube (12), a plurality of the cleaning brushes (15) being arranged corresponding to the filter layer (14), and the cleaning brush (15) being provided with bristles that are in contact with the filter surface of the filter layer (14); A cleaning motor (16), wherein the cleaning motor (16) is arranged in the filter tube (12) and is used to drive the cleaning brush (15) to rotate; An impurity collection box (17), wherein the impurity collection box (17) is arranged at the bottom of the filter tube (12); Wherein, a sedimentation hole (18) communicating with an impurity collection box (17) is provided at the bottom of the filter tube (12).
7. A boiler device according to claim 6, characterized in that: Also includes: A leakage detection mechanism (19) is arranged at the connection between the steam discharge pipe (5) and the steam delivery pipe (6) for monitoring steam leakage.
8. A boiler device according to claim 8, characterized in that: The leakage detection mechanism (19) further comprises: A sealing sleeve (20), the sealing sleeve (20) being composed of two half sleeves, the sealing sleeve (20) being sleeved at the connection between the steam discharge pipe (5) and the steam delivery pipe (6), and a sealing cavity (21) being arranged in the sealing sleeve (20); A pressure sensing unit (22), the pressure sensing unit (22) being arranged in the sealed cavity (21) and used for monitoring changes in air pressure in the sealed cavity (21); A flow rate sensing unit (23), wherein the flow rate sensing unit (23) is arranged in the sealed cavity (21) and is used to monitor changes in airflow in the sealed cavity (21).
9. A boiler device according to claim 3, characterized in that: Also includes: If the disruptor flow rod is arranged in the combustion tube (81).
