A segmented combustion control mechanism for a wall-mounted boiler

Abstract

The present invention discloses a segmented combustion control mechanism for a wall-mounted boiler, which relates to the field of temperature control technology. The mechanism comprises a combustion chamber, wherein a heat exchanger and a base are fixedly assembled on the top and bottom of the combustion chamber respectively, a water pipe is arranged in a coiled manner inside the heat exchanger, a fire grate is fixedly connected to the inside of the base, and the mechanism further comprises a control unit. The control unit comprises a positioning rod fixed to the inside of the base, a mounting seat is sleeved on the outside of the positioning rod, a spring a is provided at the bottom of the mounting seat, and a magnetic component is provided on the outside of the mounting seat. The mounting seat can be deflected each time the wall-mounted boiler is closed through a switching component, and when the wall-mounted boiler is turned on again, the burning fire grate can be switched, so that the fire grates in each partition can be used evenly. In addition, by driving the mounting seat to rotate, the fire grate in each partition can be acted in turn when the wall-mounted boiler is running for a long time, so that the thermal stress can be evenly distributed among the different fire grates, reducing the risk of damage caused by concentrated thermal stress.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature control, in particular to a segmented combustion control mechanism of a wall-mounted boiler. Background Art

[0002] A wall-mounted boiler is a device that uses gas or electricity as energy and can provide both heating and domestic hot water. It is widely used in household heating and hot water supply systems.

[0003] The burner is one of the core components of a gas-fired wall-mounted boiler. It can mix gas and air in a certain proportion and then ignite it to produce a stable flame, heating the water in the pipe to achieve heating and hot water supply. The burner includes multiple groups of fire grates arranged in parallel. The fire grates are divided into multiple zones according to their positions. A sectional valve is provided between the fire grates in each zone to control the on and off of gas. The existing sectional combustion control mechanism adjusts the number of fire grates opened by controlling the opening and closing of different sectional valves to achieve regulation of heating power.

[0004] The fire grate in a traditional wall-mounted boiler is generally divided into three zones connected in series. The first zone is directly connected to the gas pipe through a pipeline. Sectional valves are respectively provided between the first zone and the second zone, and between the second zone and the third zone. After the wall-mounted boiler is started, the fire grate in the first zone is directly ignited and burned, and then the section valve is opened to control the sectioned combustion of the fire grate. As the fire grate is used for a long time, the degree of use of the fire grates in the three zones will show obvious differences. Each time the wall-mounted boiler is started, the fire grate in the first zone will experience the temperature changes and gas shock in the initial stage of combustion, and will withstand relatively large thermal stress and gas pressure changes. Therefore, after long-term use, the fire grate in the first zone will be damaged prematurely, while the fire grates in the other two zones still have a long service life, causing the wall-mounted boiler to fail to achieve the expected service life. For this reason, the sectioned combustion control mechanism of the wall-mounted boiler needs to be improved. Summary of the Invention

[0005] The purpose of the present invention is to propose a segmented combustion control mechanism for a wall-mounted boiler in order to solve the problem that after long-term use, the fire grate of the first zone may be damaged prematurely, while the fire grates of the other two zones still have a long service life, causing the wall-mounted boiler to fail to reach its expected service life.

[0006] To achieve the above objectives, the present invention employs the following technologies: a staged combustion control mechanism for a wall-mounted boiler, comprising a combustion chamber, wherein a heat exchanger and a base are fixedly mounted on the top and bottom of the combustion chamber, respectively; a water pipe is arranged in a winding pattern inside the heat exchanger, and a fire grate is fixedly connected to the interior of the base; and further comprising:

[0007] A control unit, the control unit comprising a positioning rod fixed to the interior of the base, a mounting seat sleeved on the exterior of the positioning rod, a spring a provided at the bottom of the mounting seat, a magnetic assembly provided on the exterior of the mounting seat, a magnetic ring fixedly connected to the exterior of the mounting seat, an electromagnet provided above the magnetic ring, a switching assembly provided on the top of the mounting seat, and a connecting assembly provided inside the base;

[0008] An adjustment mechanism, the adjustment mechanism comprising a gear ring and a sleeve rotatably connected to the outside of the mounting base, the outside of the sleeve being fixedly connected to a convex tooth, and the inside of the base being fixedly mounted with a motor;

[0009] The switching assembly guides the mounting seat each time the mounting seat is reset upward, so that the mounting seat and the magnetic assembly deflect 120 degrees, and cooperates with the connecting assembly to switch the fire grate connected to the gas.

[0010] As a further description of the segmented combustion control mechanism of a wall-mounted boiler of the above technology: the magnetic assembly includes a magnetic block a fixed to the outside of the mounting base, and the outside of the sleeve is fixedly connected to magnetic blocks b and c, and the magnetic blocks a, b and c are arranged vertically and equidistantly from top to bottom.

[0011] As a further description of the segmented combustion control mechanism of a wall-mounted boiler of the above technology: the central angle of the magnetic block b is between 140 degrees and 340 degrees, and the central angle of the magnetic block c is between 140 degrees and 220 degrees.

[0012] As a further description of the segmented combustion control mechanism of a wall-mounted boiler using the above technology: the switching assembly includes a fixed seat fixed to the top of the positioning rod, three straight slots and three inclined slots are provided on the fixed seat, the inner wall of the straight slot is fixedly connected to a guide plate, and the inner wall of the mounting seat is fixedly connected to a telescopic protrusion, and when the telescopic protrusion slides inside the straight slot until it contacts the guide plate, the guide plate compresses the telescopic protrusion.

[0013] As a further description of the segmented combustion control mechanism of a wall-mounted boiler of the above technology: the connecting assembly includes an annular connecting piece fixed inside the base and connecting the fire grate with the gas pipeline, and a sealing plate 1 is slidably connected inside the annular connecting piece, a spring b is provided between the sealing plate 1 and the annular connecting piece, and an iron block is fixedly connected to one side of the sealing plate 1.

[0014] As a further description of the segmented combustion control mechanism of a wall-mounted boiler of the above technology: the fire grates are arranged in three groups of six in total, and each group of the fire grates is interconnected and serves as a partition. Three connecting ports are equidistantly provided on the annular connecting piece and are respectively connected to the fire grates of the three partitions.

[0015] As a further description of the segmented combustion control mechanism of a wall-mounted boiler of the above technology: the driving shaft of the motor is fixedly connected to gear 1, and an intermittent drive component is provided on the annular connecting piece.

[0016] As a further description of the segmented combustion control mechanism of a wall-mounted boiler using the above technology: the intermittent drive assembly includes a chuck rotatably connected to an annular connecting piece and fixed to a gear ring, a gear 2 is rotatably connected to the chuck, a push plate is fixedly connected to the bottom of the gear 2, a spring pin embedded in the chuck is fixedly installed on the annular connecting piece, and a torsion spring is provided between the gear 2 and the gear ring.

[0017] As a further description of the segmented combustion control mechanism of a wall-mounted boiler of the above technology: it also includes an exhaust component, the exhaust component includes a gas storage box fixed to the electromagnet and the fixed seat, the interior of the gas storage box is slidably connected with a piston plate, a tension spring is provided between the piston plate and the gas storage box, a one-way valve 1 is installed on the top of the gas storage box, and a one-way valve 2 is installed between the annular connecting piece and the fire grate, and between the gas storage box and the fire grate.

[0018] As a further description of the segmented combustion control mechanism of a wall-mounted boiler of the above technology: it also includes a gas flow regulating component, the gas flow regulating component includes an air inlet pipe fixed to the bottom of the annular connecting piece, the air inlet pipe is fixedly connected to an outer shell, the base is internally slidably connected to a rack, a support spring is provided at the bottom of the rack, the outer shell is internally slidably connected to a sealing plate 2, the outer shell is internally rotatably connected to a threaded rod threadedly connected to the sealing plate 2, one end of the threaded rod passes through the outer shell and is fixedly connected to a gear knob meshing with the rack.

[0019] In summary, due to the adoption of the above-mentioned technology, the staged combustion control mechanism of the wall-mounted boiler of the present invention has the following beneficial effects:

[0020] The present application uses a switching assembly to enable the mounting base to deflect each time the wall-mounted boiler is turned off. When the wall-mounted boiler is turned on again, the burning fire grate can be switched, so that the fire grates in each zone can be used evenly. Compared with the existing control mechanism, this design reduces the need for frequent repairs or replacements due to premature damage of individual fire grates, thereby extending the service life of the entire wall-mounted boiler fire grate system. In addition, by driving the mounting base to rotate, the fire grates in each zone can be used in turn when the wall-mounted boiler is running for a long time, so that the thermal stress can be evenly distributed among the different fire grates, reducing the risk of damage caused by concentrated thermal stress, and further extending the service life of the entire fire grate.

[0021] The present application uniquely designs the central angles of the magnetic blocks b and c, so that when the magnetic blocks b and c are deflected and the fire grate is switched, the fire grate already in a burning state will not be extinguished immediately, so that the gas ejected by the switched fire grate can be ignited by the fire grate in a burning state, so there is no need to ignite again, thereby improving the use effect of the wall-mounted boiler;

[0022] The exhaust assembly can reduce the impact vibration of the mounting base when it is reset, and generate a rapid jet of air to remove the carbon deposits caused by incomplete gas combustion near the fire exhaust hole, preventing carbon powder from clogging the fire grate, thereby achieving a clearing effect. In addition, the airflow can also remove the residual gas in the fire grate, effectively reducing the possibility of gas accumulation inside the equipment, eliminating safety hazards, and improving the safety of wall-mounted boiler use;

[0023] While controlling the downward movement of the mounting base to control the staged combustion of the wall-mounted boiler, the gas flow regulating assembly can also adjust the gas discharge speed in real time. This design not only controls the gas volume according to the staged combustion of the fire grate without complex programs and electronic components, but also increases the gas discharge volume before adding the burning fire grate. By increasing the gas discharge volume, the sudden change in heat between the different gears of the staged combustion of the fire grate is compensated, making the heating temperature of the wall-mounted boiler more gradual, and facilitating the precise control of the heating temperature of the wall-mounted boiler.

[0024] The intermittent drive component can speed up the switching speed and accuracy of the fire grate without using complex braking mechanisms and sensors, avoiding switching the fire grate gear when the gas displacement does not meet the requirements, thereby reducing temperature fluctuations and facilitating accurate temperature control. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Shows an overall schematic diagram provided according to an embodiment of the present invention;

[0026] Figure 2 Shows a schematic diagram of the interior of a base provided in an embodiment of the present invention;

[0027] Figure 3 It shows a schematic diagram of the installation position of the second one-way valve provided in an embodiment of the present invention;

[0028] Figure 4 A schematic diagram of a mounting base provided according to an embodiment of the present invention is shown;

[0029] Figure 5 It shows an exploded schematic diagram of a fixing base provided in an embodiment of the present invention;

[0030] Figure 6 A schematic diagram of a convex plate provided according to an embodiment of the present invention is shown;

[0031] Figure 7A schematic cross-sectional view of a sleeve provided in an embodiment of the present invention is shown;

[0032] Figure 8 It shows a schematic diagram of the interior of an annular connecting member provided according to an embodiment of the present invention;

[0033] Figure 9 A schematic diagram showing the positional relationship between the magnetic block and the annular connecting member provided in an embodiment of the present invention is shown;

[0034] Figure 10 A schematic diagram of a gear knob provided according to an embodiment of the present invention is shown;

[0035] Figure 11 shows a schematic cross-sectional view of a housing provided according to an embodiment of the present invention;

[0036] Figure 12 A schematic diagram of a chuck provided according to an embodiment of the present invention is shown.

[0037] Legend:

[0038] 10. Combustion chamber; 11. Heat exchanger; 12. Water pipe; 13. Base; 14. Fire grate;

[0039] 20. Control unit; 21. Positioning rod; 22. Spring a; 23. Mounting seat; 24. Magnetic assembly; 241. Magnetic block a; 242. Magnetic block b; 243. Magnetic block c; 25. Magnetic ring; 26. Electromagnet; 27. Switching assembly; 271. Fixing seat; 272. Straight slot; 273. Oblique slot; 274. Guide plate; 275. Telescopic protrusion; 28. Connecting assembly; 281. Annular connecting piece; 282. Sealing plate 1; 283. Spring b; 284. Iron block;

[0040] 30. Adjustment mechanism; 31. Sleeve; 32. Raised teeth; 33. Motor; 34. Gear 1; 35. Gear ring; 36. Intermittent drive assembly; 361. Chuck; 362. Gear 2; 363. Torsion spring; 364. Spring latch; 365. Push plate;

[0041] 40. Exhaust assembly; 41. Air storage box; 42. Piston plate; 43. Tension spring; 44. One-way valve 1; 45. One-way valve 2;

[0042] 50. Gas flow regulating assembly; 51. Inlet pipe; 52. Housing; 53. Rack; 54. Support spring; 55. Gear knob; 56. Threaded rod; 57. Sealing plate 2. DETAILED DESCRIPTION

[0043] The following will be combined with the accompanying drawings to clearly and completely describe the technology of the present invention, a staged combustion control mechanism for a wall-mounted boiler, in accordance with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0044] like Figures 1-12 As shown, the present invention provides: a staged combustion control mechanism for a wall-mounted boiler: comprising a combustion chamber 10, with a heat exchanger 11 and a base 13 fixedly mounted on the top and bottom of the combustion chamber 10, respectively; a water pipe 12 is arranged in a coiled manner inside the heat exchanger 11, and a fire grate 14 is fixedly connected to the inside of the base 13; the gas discharged through the air holes of the fire grate 14 burns in the combustion chamber 10, and the heat is transferred to the water passing through the water pipe 12 through the heat exchanger 11, so that the hot water circulates in the external pipeline to realize heat supply; the fire grate 14 is provided in three groups of six, with two fire grates 14 in each group interconnected and serving as a partition; the staged combustion and water temperature control are realized by controlling the number of fire grates 14 put into use; and further comprising:

[0045] The control unit 20 includes a positioning rod 21 fixed to the inside of the base 13, a mounting seat 23 is sleeved on the outside of the positioning rod 21, a spring a22 is provided at the bottom of the mounting seat 23, a magnetic assembly 24 is provided on the outside of the mounting seat 23, a magnetic ring 25 is fixedly connected to the outside of the mounting seat 23, an electromagnet 26 is provided above the magnetic ring 25, and a magnetic repulsion force is generated between the electromagnet 26 and the magnetic ring 25 when energized. The magnetic force of the electromagnet 26 can be adjusted by controlling the current of the electromagnet 26, thereby controlling the downward movement distance of the mounting seat 23. A switching assembly 27 is provided on the top of the mounting seat 23, and a connecting assembly 28 is provided inside the base 13;

[0046] The switching assembly 27 guides the mounting base 23 each time the mounting base 23 is reset upward, so that the mounting base 23 and the magnetic assembly 24 deflect 120 degrees, and cooperates with the connecting assembly 28 to switch the fire grate 14 connected to the gas.

[0047] Reference Figure 5-Figure 7The switching assembly 27 includes a fixing seat 271 fixed to the top of the positioning rod 21. The fixing seat 271 is provided with three straight grooves 272 and three oblique grooves 273. The straight grooves 272 and the oblique grooves 273 are arranged in a circular array around the central axis of the fixing seat 271, and each straight groove 272 connects two adjacent oblique grooves 273. The inner wall of the straight groove 272 is fixedly connected to a guide plate 274 with an inclined top. The inner wall of the mounting seat 23 is fixedly connected to a telescopic protrusion 275 slidably connected to the straight groove 272. When the telescopic protrusion 275 slides inside the straight groove 272 until it contacts the guide plate 274, the guide plate 274 is moved by the inclined surface. The telescopic protrusion 275 is compressed, so when the mounting seat 23 moves downward, the guide plate 274 will not limit the downward movement of the telescopic protrusion 275. When the mounting seat 23 moves upward to reset, the telescopic protrusion 275 moves upward at the same time. At this time, the guide plate 274 will hinder the upward movement of the telescopic protrusion 275, causing the telescopic protrusion 275 to move obliquely along the guide plate 274 and the inclined groove 273, thereby driving the mounting seat 23 to deflect, and the deflection angle is one hundred and twenty degrees, ensuring the corresponding positions of the magnetic assembly 24 and the connecting assembly 28. When the wall-mounted boiler is turned on again, the burning fire grate 14 can be switched, so that the fire grate 14 in each partition can be used evenly.

[0048] Reference Figure 2 、 Figure 3 and Figure 8 The connecting component 28 includes an annular connecting piece 281 fixed to the inside of the base 13 and connecting the fire grate 14 with the gas pipeline. Three connecting ports are equidistantly provided on the annular connecting piece 281 and are respectively connected to the fire grate 14 of the three partitions, so that the on and off of the three connecting ports can respectively control the discharge of gas in the three partition fire grate 14. A sealing plate 282 is slidably connected to the inside of each connecting port of the annular connecting piece 281. A spring b283 is provided between the sealing plate 282 and the annular connecting piece 281. An iron block 284 is fixedly connected to one side of the sealing plate 282. When the magnetic component 24 passes through the middle of the annular connecting piece 281, the magnetic component 24 can attract the iron block 284 by magnetic force, thereby driving the sealing plate 282 to move and opening the connecting port of the annular connecting piece 281.

[0049] Reference Figure 5 and Figure 7In order to achieve segmented combustion control, the magnetic assembly 24 includes a magnetic block a241 fixed to the outside of the mounting base 23, and a magnetic block b242 and a magnetic block c243 are fixedly connected to the outside of the sleeve 31. The magnetic blocks a241, b242 and c243 are arranged vertically and equidistantly from top to bottom. After the magnetic block c243 enters the middle of the annular connecting piece 281, the magnetic block c243 attracts one of the iron blocks 284 through magnetic force, causing one of the sealing plates 282 to move and open a connection port of the annular connecting piece 281, so that the gas can pass through the annular connecting piece 281 into one of the partitioned fire exhausts. 14, the first gear combustion is realized. After the magnetic block b242 enters the middle of the annular connecting piece 281, since the length range of the magnetic block b242 can cover the two iron blocks 284, the magnetic block b242 can simultaneously attract the two iron blocks 284 through magnetic force, so that the two connecting ports of the annular connecting piece 281 are opened, and the two partitioned fire bars 14 are controlled to burn, realizing the second gear combustion. The magnetic block a241 is annular. After the magnetic block a241 enters the middle of the annular connecting piece 281, all the open connecting ports of the annular connecting piece 281 are opened, so that the three partitioned fire bars 14 burn at the same time, and thus the segmented combustion control is realized.

[0050] Reference Figure 9 Each opening of the annular connecting piece 281 corresponds to a central angle width of 20 degrees. The central angle of the magnetic block b242 is between 140 degrees and 340 degrees. The opening direction of the magnetic block b242 is facing one of the connection ports of the annular connecting piece 281. The central angle of the magnetic block c243 is between 140 degrees and 220 degrees. The symmetry axis of the magnetic block c243 is facing any connection port position except the connection port of the annular connecting piece 281, so that when switching from the magnetic block c243 to the magnetic block b242, the spring b283 in one of the connection ports of the annular connecting piece 281 is kept in the state of rotation. Maintain an open state, thereby reducing the position movement of spring b283 when controlling segmented combustion and extending the service life of spring b283. The central angle of magnet c243 and magnet b242 determines the length range of the two. In order to avoid repeated ignition when magnet b242 and magnet c243 rotate to make the fire grate 14 burn in turn, the central angle of magnet b242 and magnet c243 are both greater than one hundred and forty degrees, which can cover the two connection port ranges of the annular connecting piece 281, so that the gas ejected from the switched fire grate 14 can be ignited by the fire grate 14 in the burning state.

[0051] Reference Figure 5 and Figure 12, also includes an adjustment mechanism 30, the adjustment mechanism 30 includes a gear ring 35 and a sleeve 31 rotatably connected to the outside of the mounting seat 23, the outside of the sleeve 31 is fixedly connected to a convex tooth 32, the inside of the base 13 is fixedly installed with a motor 33, the drive shaft of the motor 33 is fixedly connected to a gear 34, an intermittent drive assembly 36 is provided on the annular connecting member 281, the intermittent drive assembly 36 includes a chuck 361 rotatably connected to the annular connecting member 281 and fixed to the gear ring 35, and the chuck 361 is fixed to the gear ring 35. The gear 2 362 is connected to the rotation, and the bottom of the gear 2 362 is fixedly connected to the push plate 365. The annular connecting piece 281 is fixedly installed with a spring latch 364 embedded in the chuck 361. A torsion spring 363 is provided between the gear 2 362 and the gear ring 35. Under the limit of the spring latch 364, the chuck 361 cannot be deflected under the elastic force of the torsion spring 363. The motor 33 drives the gear 1 34 to rotate, driving the gear 2 362 and the push plate 365 to rotate. When the push plate 365 When the spring latch 364 is pushed out of the slot of the chuck 361, the elastic force of the torsion spring 363 drives the chuck 361 and the gear ring 35 to rotate. During this process, the push plate 365 and the spring latch 364 intersect, and the spring latch 364 is reset to abut against the edge of the chuck 361 by its own elastic force. After the chuck 361 rotates 120 degrees, the slot of the chuck 361 is aligned with the spring latch 364 again. At this time, the spring latch 364 is embedded in the slot to lock the chuck 361, and the spring There are three latches 364, which divide the edge of the chuck 361 into three equal parts, with each part having a central angle of 120 degrees. This design allows the chuck 361 and the gear ring 35 to intermittently rotate 120 degrees after the motor 33 is started. When the protruding tooth 32 moves to embed into the tooth groove of the gear ring 35, the gear ring 35 intermittently drives the protruding tooth 32 to rotate, thereby driving the sleeve 31, the magnetic block c243 and the magnetic block b242 to rotate, switching the connection port opened by the annular connecting piece 281, thereby switching the burning fire bar 14.

[0052] Reference Figure 2 、 Figure 3 and Figure 5, also includes an exhaust component 40, the exhaust component 40 includes an air box 41 fixed to the electromagnet 26 and the fixing seat 271, the interior of the air box 41 is slidably connected to a piston plate 42, a tension spring 43 that is always in a stretched state is provided between the piston plate 42 and the air box 41, a one-way valve 1 44 is installed on the top of the air box 41, and a one-way valve 2 45 is installed between the annular connecting piece 281 and the fire bar 14, and between the air box 41 and the fire bar 14. After the electromagnet 26 is powered off and the magnetic ring 25 and the mounting seat 23 lose their magnetic repulsion, the compressed spring a22 drives the mounting seat 23 to move upward and reset through elastic force, so that the mounting seat 23 pushes the piston plate upward 42. The air inside the gas storage box 41 enters the fire grate 14 through the one-way valve 45, bringing out the residual gas in the fire grate 14, effectively reducing the possibility of gas accumulation inside the equipment. At the same time, the mounting seat 23 hitting the piston plate 42 can also transmit the vibration to the fire grate 14, clearing the carbon deposits in the air holes of the fire grate 14. When the mounting seat 23 moves downward, the tension spring 43 pulls the piston plate 42 down, allowing the outside air to enter the gas storage box 41 through the one-way valve 44. In order to control the flow path of air and gas, a one-way valve 45 is installed between the annular connecting piece 281 and the fire grate 14, and between the gas storage box 41 and the fire grate 14 to prevent the gas from mixing with the air.

[0053] Reference Figure 10 and Figure 11 , also includes a gas flow regulating assembly 50, which includes an air inlet pipe 51 fixed to the bottom of the annular connecting piece 281, the air inlet pipe 51 is fixedly connected to a shell 52, and a rack 53 is slidably connected to the inside of the base 13. A supporting spring 54 is provided at the bottom of the rack 53, and a sealing plate 2 slidably connected to the inside of the shell 52. The inside of the shell 52 is rotatably connected to a threaded rod 56 threadedly connected to the sealing plate 2 57. One end of the threaded rod 56 passes through the shell 52 and is fixedly connected to a gear knob 55 meshing with the rack 53. When the mounting seat 23 moves downward, the rack 53 is pressed down to drive the gear knob 55 to rotate, thereby rotating the threaded rod 56 to drive the sealing plate 2 57 to slide inside the shell 52, adjusting the gas delivery rate in the air inlet pipe 51, controlling the gas discharge speed from the fire grate 14, adjusting the flame size, and compensating for the sudden change in heat between different gears of the segmented combustion of the fire grate 14 by increasing the gas displacement, so that the heating and heating of the wall-mounted boiler are more gradual.

[0054] Working principle: Control the electromagnet 26 to generate magnetic repulsion to drive the magnetic ring 25 to move downward, so that the mounting seat 23 drives the sleeve 31 and the magnetic block c243 to move downward and enter the middle of the annular connecting piece 281. Under the magnetic force of the magnetic block c243, one of the iron blocks 284 is attracted to drive the sealing plate 1 282 to move, and open one of the connecting ports of the annular connecting piece 281, so that the gas enters the fire grate 14 of one of the partitions through the air inlet pipe 51 and the annular connecting piece 281. The gas is ignited and the wall-mounted boiler enters the first stage of combustion. The heat is transferred through the heat exchanger 11 to heat the water in the water pipe 12. The magnetic force of the electromagnet 26 is continued to be increased, so that the magnetic block b242 moves downward with the sleeve 31 into the middle of the annular connecting piece 281. Similarly, the two connecting ports of the annular connecting piece 281 are opened to realize the second stage of combustion of the wall-mounted boiler. The magnetic force of the electromagnet 26 is continued to be increased until the magnetic block a241 enters the middle of the annular connecting piece 281. At this time, all the connecting ports of the annular connecting piece 281 are opened, and the third stage of combustion of the wall-mounted boiler is realized.

[0055] When the wall-mounted boiler is in the first or second stage of combustion, the convex tooth 32 moves with the sleeve 31 and is embedded in the gear ring 35. The starting motor 33 drives the gear 1 34 to rotate, and drives the gear 2 362 and the push plate 365 to rotate. At this time, the chuck 361 and the gear ring 35 are locked by the spring latch 364, and the torsion spring 363 continues to increase the compression force. When the push plate 365 rotates to push the spring latch 364 out of the slot of the chuck 361, the elastic force of the torsion spring 363 drives the chuck 361 and the gear ring 35 to rotate, driving the sleeve 31, the magnetic block c243 and the magnetic block b242 to deflect. During this process, the push plate 365 and the spring latch 364 intersect each other, and the spring latch 364 returns to the edge of the chuck 361 due to its own elastic force. After the chuck 361 rotates 120 degrees, the groove of the chuck 361 is aligned with the spring latch 364 again. At this time, the spring latch 364 is embedded in the groove to lock the chuck 361. The single rotation angle of the gear ring 35 is 120 degrees, so that the magnetic blocks c243 and b242 can accurately switch the connection port opened by the annular connecting piece 281 when rotating, thereby controlling the rotation use of the fire bars 14 in different partitions.

[0056] The mounting base 23 moves downward to press the rack 53 downward, driving the gear knob 55 to rotate, thereby rotating the threaded rod 56 and driving the second sealing plate 57 to slide inside the housing 52. The opening and closing degree of the second sealing plate 57 adjusts the gas delivery rate in the air inlet pipe 51, controls the gas discharge rate from the fire grate 14, and adjusts the flame size. By increasing the gas discharge volume in each combustion stage, the fire intensity is increased to increase the temperature, compensating for the sudden change in heat between different gears of the staged combustion of the fire grate 14, making the heating of the wall-mounted boiler more gradual.

[0057] After the electromagnet 26 is powered off, the extension force of the spring a22 drives the mounting base 23 to reset. At this time, the telescopic protrusion 275 slides upward in the straight groove 272. Under the guidance of the guide plate 274 and the inclined groove 273, the telescopic protrusion 275 drives the mounting base 23 to deflect at an angle of 120 degrees, ensuring the corresponding position of the magnetic assembly 24 and the connecting assembly 28. When the wall-mounted boiler is turned on again, the burning fire grate 14 can be switched, so that the fire grate 14 in each partition can be used evenly.

[0058] The upward movement of the mounting seat 23 drives the piston plate 42 to move upward, allowing the air inside the gas storage box 41 to enter the fire grate 14 through the one-way valve 2 45, bringing out the residual gas in the fire grate 14, effectively reducing the possibility of gas accumulation inside the equipment. At the same time, the mounting seat 23 hitting the piston plate 42 can also transmit vibration to the fire grate 14, clearing the carbon deposits in the air holes of the fire grate 14. Since the one-way valve 2 45 is also installed between the annular connecting piece 281 and the fire grate 14, air will not enter the annular connecting piece 281. Similarly, when the gas is transported through the annular connecting piece 281, the gas will not enter the gas storage box 41. When the mounting seat 23 moves downward, the tension spring 43 pulls the piston plate 42 down by elastic force, allowing outside air to enter the gas storage box 41 through the one-way valve 1 44.

[0059] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited to this. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, can make equivalent replacements or changes to the segmented combustion control mechanism of a wall-mounted boiler and its inventive concept according to the technology of the present invention, which should be covered by the scope of protection of the present invention.

Claims

1. A segmented combustion control mechanism for a wall-mounted boiler, comprising a combustion chamber (10), wherein a heat exchanger (11) and a base (13) are fixedly mounted on the top and bottom of the combustion chamber (10), a water pipe (12) is arranged in a coiled manner inside the heat exchanger (11), and a fire grate (14) is fixedly connected to the inside of the base (13), characterized in that: Also includes: A control unit (20), the control unit (20) comprising a positioning rod (21) fixed to the inside of a base (13), a mounting seat (23) being sleeved on the outside of the positioning rod (21), a spring a (22) being provided at the bottom of the mounting seat (23), a magnetic component (24) being provided on the outside of the mounting seat (23), a magnetic ring (25) being fixedly connected to the outside of the mounting seat (23), an electromagnet (26) being provided above the magnetic ring (25), a switching component (27) being provided on the top of the mounting seat (23), and a connecting component (28) being provided inside the base (13); The connecting assembly (28) includes an annular connecting piece (281) fixed inside the base (13) and connecting the fire bar (14) with the gas pipeline. The fire bars (14) are provided in three groups, a total of six. Each group of the fire bars (14) is connected to each other and serves as a partition. The annular connecting piece (281) is provided with three connecting ports at equal intervals and is respectively connected to the fire bars (14) of the three partitions. The inside of each connecting port of the annular connecting piece (281) is slidably connected to a sealing plate 1 (282). A spring b (283) is provided between the sealing plate 1 (282) and the annular connecting piece (281). An iron block (284) is fixedly connected to one side of the sealing plate 1 (282). An adjusting mechanism (30), the adjusting mechanism (30) comprising a gear ring (35) and a sleeve (31) rotatably connected to the outside of the mounting seat (23), the outside of the sleeve (31) being fixedly connected with a convex tooth (32), and the inside of the base (13) being fixedly mounted with a motor (33); The switching assembly (27) guides the mounting seat (23) each time the mounting seat (23) is reset upward, causing the mounting seat (23) and the magnetic assembly (24) to deflect 120 degrees, and cooperates with the connecting assembly (28) to switch the fire grate (14) connected to the gas.

2. The staged combustion control mechanism of a wall-mounted boiler according to claim 1, characterized in that: The magnetic assembly (24) includes a magnetic block a (241) fixed to the outside of the mounting base (23), and a magnetic block b (242) and a magnetic block c (243) are fixedly connected to the outside of the sleeve (31), wherein the magnetic block a (241), the magnetic block b (242) and the magnetic block c (243) are arranged vertically and equidistantly from top to bottom.

3. The staged combustion control mechanism of a wall-mounted boiler according to claim 2, characterized in that: The central angle of the magnetic block b (242) is between one hundred and forty degrees and three hundred and forty degrees, and the central angle of the magnetic block c (243) is between one hundred and forty degrees and two hundred and twenty degrees.

4. The staged combustion control mechanism of a wall-mounted boiler according to claim 1, characterized in that: The switching assembly (27) includes a fixing seat (271) fixed to the top end of the positioning rod (21), and three straight grooves (272) and three oblique grooves (273) are provided on the fixing seat (271). The inner wall of the straight groove (272) is fixedly connected to a guide plate (274), and the inner wall of the mounting seat (23) is fixedly connected to a telescopic protrusion (275). When the telescopic protrusion (275) slides inside the straight groove (272) and contacts the guide plate (274), the guide plate (274 compresses the telescopic protrusion (275).

5. The staged combustion control mechanism of a wall-mounted boiler according to claim 1, characterized in that: The drive shaft of the motor (33) is fixedly connected to a gear 1 (34), and an intermittent drive assembly (36) is provided on the annular connecting member (281).

6. The staged combustion control mechanism of a wall-mounted boiler according to claim 5, characterized in that: The intermittent drive assembly (36) includes a chuck (361) rotatably connected to an annular connecting member (281) and fixed to a gear ring (35); a gear 2 (362) is rotatably connected to the chuck (361); a push plate (365) is fixedly connected to the bottom of the gear 2 (362); a spring latch (364) embedded in the chuck (361) is fixedly mounted on the annular connecting member (281); and a torsion spring (363) is provided between the gear 2 (362) and the gear ring (35).

7. The staged combustion control mechanism of a wall-mounted boiler according to claim 4, characterized in that: The exhaust assembly (40) further comprises an exhaust box (41) fixed to the electromagnet (26) and the fixing seat (271), a piston plate (42) being slidably connected to the interior of the air storage box (41), a tension spring (43) being provided between the piston plate (42) and the air storage box (41), a one-way valve (44) being installed on the top of the air storage box (41), and a one-way valve (45) being installed between the annular connecting piece (281) and the fire bar (14) and between the air storage box (41) and the fire bar (14).

8. The staged combustion control mechanism of a wall-mounted boiler according to claim 1, characterized in that: The gas flow regulating assembly (50) is also included. The gas flow regulating assembly (50) includes an air inlet pipe (51) fixed to the bottom of the annular connecting piece (281), a housing (52) is fixedly connected to the air inlet pipe (51), a rack (53) is slidably connected to the interior of the base (13), a support spring (54) is provided at the bottom of the rack (53), a sealing plate 2 (57) is slidably connected to the interior of the housing (52), a threaded rod (56) threadedly connected to the sealing plate 2 (57) is rotatably connected to the interior of the housing (52), and one end of the threaded rod (56) passes through the housing (52) and is fixedly connected to a gear knob (55) meshing with the rack (53).

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