Full-premixing wall-hanging stove with adjustable fuel gas ratio

Abstract

The invention discloses a full-premixing wall-hanging stove with an adjustable fuel gas ratio, and relates to the technical field of wall-hanging stoves, the full-premixing wall-hanging stove comprises a machine body, a fuel gas pipe is arranged at the bottom of the machine body, an air pipe is arranged on the side wall of the machine body, an exhaust port is formed in the top of the machine body, a combustion chamber is arranged in the machine body, and the combustion chamber is communicated with the exhaust port; a heat exchanger is arranged in the combustion chamber, a proportioning pipe is arranged on the side, away from the heat exchanger, of the combustion chamber, and adjusting blocks slide in adjusting grooves, so that the diameter of an adjusting ring defined by the multiple adjusting blocks is changed, the conveying speed of fuel gas is changed, and then the conveying amount of the fuel gas is changed. Meanwhile, the space of an air conveying channel is changed along with the change of the diameter of the adjusting ring, so that the effect of changing the flow rate of conveyed gas according to the conveying space is achieved, the conveying volume of fuel gas and the conveying volume of air are in the range of the air-fuel ratio after being mixed in the matching pipe, and stable combustion of flames in the combustion chamber is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of wall-mounted boilers, and specifically to a gas ratio adjustable fully premixed wall-mounted boiler. Background Art

[0002] A wall-mounted boiler is a heating device with a relatively small evaporation rate per unit time and a relatively low steam pressure. It heats the water in the furnace body through a heating component and circulates it, so that the water in the pipeline can continuously dissipate heat outward, and thus can be used to increase the indoor temperature or provide hot water. Existing wall-mounted boilers usually use a constant pipeline for mixing gas and air. This process relies on the functions of a gas pump and an air pump. However, when the power of the gas pump and the air pump fluctuates, the ratio of the pumped gas and air will deviate, resulting in an imbalance in the air-fuel ratio of the gas mixture formed by the gas and air. When it is transported to the combustion chamber for combustion, it will affect the combustion stability of the flame in the combustion chamber, and there may be phenomena such as deflagration sound, whistling or resonance sound, and uneven temperature distribution in the combustion chamber. Summary of the Invention

[0003] The purpose of the present invention is to provide a gas ratio adjustable fully premixed wall-mounted boiler to solve the problems raised in the prior art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions: A gas ratio adjustable fully premixed wall-mounted boiler includes a body. A plurality of water inlets and water outlets are provided at the bottom of the body. A gas pipe is provided at the center of the bottom of the body. An air pipe is provided on the side wall of the body. An exhaust port is provided at the top of the body. A combustion chamber is provided inside the body. The combustion chamber is communicated with the exhaust port. A heat exchanger is provided inside the combustion chamber. A ratio pipe is provided on the side of the combustion chamber away from the heat exchanger.

[0005] Preferably, a plurality of delivery pipes are provided on the side of the ratio pipe close to the combustion chamber. A plurality of jet ports are provided at the top of the delivery pipes. A ignition needle is provided on one side of the jet port.

[0006] The gas mixture of air and gas after mixing is transported from the ratio pipe to the delivery pipes. The gas mixture is transported from the delivery pipes to a plurality of jet ports, and is ejected into the combustion chamber through the jet ports. During the ejection process, the ignition needle ignites the ejected gas mixture.

[0007] Preferably, a gas pump is provided at the bottom of the ratio pipe. The gas pump is communicated with the gas pipe. An air delivery ring is provided on the side wall of the ratio pipe. The air delivery ring is communicated with an air pump through a pipeline. The air pump is communicated with the air pipe.

[0008] The gas pump extracts the gas in the gas pipeline and conveys the gas to the proportioning pipe, while the air pump extracts the air in the air pipeline and conveys the air into the air delivery ring. The air is conveyed through the air delivery ring to the proportioning pipe for mixing with the gas.

[0009] Preferably, the proportioning pipe includes a mixing pipe. A plurality of adjusting grooves are provided on the side wall of the mixing pipe. The plurality of adjusting grooves are arranged around the axis of the mixing pipe. A gas delivery groove is provided on the side of the adjusting groove away from the mixing pipe. The gas delivery groove is used to communicate the adjusting groove and the air delivery ring.

[0010] The gas enters the mixing pipe under the action of the gas pump, and the air enters the air delivery ring under the action of the air pump. Subsequently, the air is conveyed through the air delivery ring to the gas delivery groove, and then through the gas delivery groove, the air is conveyed into the gas delivery groove and then conveyed from the gas delivery groove to the mixing pipe.

[0011] Preferably, an adjusting block is provided in the adjusting groove. The adjusting block is slidably connected to the adjusting groove. The adjusting block is arc-shaped. A gas delivery groove is provided in the adjusting block. The gas delivery groove communicates with the gas delivery groove and the mixing pipe respectively. A rotating shaft is provided on the side of the adjusting block away from the mixing pipe. The rotating shaft is rotatably connected to the adjusting groove. A semi-toothed ring is provided on the outer wall of the rotating shaft. A micro motor is provided on the inner wall of the proportioning pipe. A gear is provided on the driving shaft of the micro motor. The gear meshes with the semi-toothed ring.

[0012] When the delivery power of the gas by the gas pump decreases, since the delivery speed of the gas is slow, at this time, the driving shaft of the micro motor drives the gear to rotate. During the rotation of the gear, it meshes with the semi-toothed ring on the rotating shaft, so that the rotating shaft drives the adjusting block to rotate. The adjusting block rotates along the adjusting groove. One ends of the plurality of adjusting blocks away from the adjusting groove rotate from the edge of the mixing pipe towards the center of the mixing pipe. The rotation of the plurality of adjusting blocks causes the diameter of the adjusting ring formed by the plurality of adjusting blocks to further decrease. Then, when the gas is conveyed to the adjusting ring, due to the influence of the diameter of the adjusting ring, the flowing speed of the gas is further increased. And since the adjusting block rotates towards the center of the mixing pipe, at this time, the distance between the end of the adjusting block away from the adjusting groove and the inner wall of the mixing pipe increases. Then, when the air is conveyed from the gas delivery groove to the mixing pipe, the delivery space of the air increases, and thus the delivery speed of the air will slow down. The faster flowing gas is accelerated by the adjusting ring, so that the volume of the gas flowing into the side of the adjusting ring away from the gas pump is larger, while the volume of the slower flowing air flowing into the side of the adjusting ring away from the gas pump is smaller. Thus, the volume of the gas and the volume of the air are within a suitable air-fuel ratio range, thereby ensuring the stable combustion of the flame in the subsequent combustion chamber. When the power of the gas pump rises, due to the relatively fast conveying speed of the gas, at this time, the rotating shaft drives the adjusting block to reset, and the adjusting block rotates along the adjusting groove. One end of several adjusting blocks away from the adjusting groove rotates from the center of the mixing tube to the edge of the mixing tube, so that the diameter of the adjusting ring formed by several adjusting blocks is further enlarged. Then, when the gas is conveyed to the adjusting ring, due to the influence of the diameter of the adjusting ring, the flowing speed of the gas decreases. And because the adjusting block rotates towards the edge of the mixing tube, the distance between one end of the adjusting block away from the adjusting groove and the inner wall of the mixing tube is further reduced. Then, when the air is conveyed from the air conveying groove to the mixing tube, the conveying space of the air decreases, and thus the conveying speed of the air will increase, so that the volume of the gas conveyed when the power of the gas pump rises is the same as the volume of the gas conveyed when the power of the gas pump drops per unit time to the side of the adjusting ring away from the gas pump. And the volume of the air conveyed when the power of the gas pump rises is also the same as the volume of the air conveyed when the power of the gas pump drops per unit time to the side of the adjusting ring away from the gas pump, further making the volume of the gas and the volume of the air within a suitable air-fuel ratio range, thus ensuring the stable combustion of the flame in the subsequent combustion chamber.

[0013] Preferably, a moving block is arranged on the side of the adjusting block away from the mixing tube, several sliding grooves are arranged on the inner wall of the mixing tube, a sliding block is arranged on the side of the moving block close to the sliding groove, the sliding block is slidably connected with the sliding groove, and a spring is arranged between the top of the sliding groove and the bottom of the sliding block.

[0014] The gas is conveyed into the mixing tube under the action of the gas pump, and then the conveyed gas will push the moving block to move. At this time, the thrust generated by the gas conveyance is greater than the gravity of the moving block, so that the gas thrust and the elastic force of the spring cooperate to lift the moving block, making the moving block move towards the side of the adjusting block away from the gas pump. When the moving block moves, it will disengage from several adjusting blocks, and then the two sections of the mixing tube are immediately in a communicating state, so that the gas and the air are mixed after the mixing tube is communicated. When the gas pump is closed, there is no gas being conveyed into the mixing tube at this time, so that the conveyed gas thrust is less than the gravity of the moving block. Then, the moving block will move towards the side close to the gas pump, so that the adjusting block will extend into the arc-shaped groove, and then the moving block will fit with several adjusting blocks, making the two sections of the mixing tube isolated and closed again, avoiding the mixture of air and gas remaining in the mixing tube, thus preventing unsafe problems.

[0015] Preferably, an inclined rotating ring is arranged at the bottom of the moving block, the inclined rotating ring is rotatably connected with the moving block, several arc-shaped grooves are arranged on the side wall of the moving block, and a mixing cavity is arranged in the middle of the moving block.

[0016] After the gas flows through the adjustment ring composed of several adjustment blocks, the gas will encounter the obliquely rotating ring, and then the gas will push the obliquely rotating ring to rotate. When the obliquely rotating ring rotates, it will cause the gas to flow from the center of the mixing pipe to the edge of the mixing pipe. Then, when flowing to the edge of the mixing pipe, the gas will meet the air transported from the edge. Then, the gas and the air will flow together towards the arc-shaped groove and be transported to the mixing chamber through the arc-shaped groove.

[0017] Preferably, the arc-shaped grooves communicate with the mixing pipe and the mixing chamber respectively. Several spiral plates are arranged in the mixing chamber, and several spiral grooves are arranged at the top of the mixing chamber. The number of the spiral grooves is less than that of the spiral plates.

[0018] The air and the gas meet between the mixing pipe, the adjustment block and the moving block, and are transported from the mixing pipe to the mixing chamber through the arc-shaped groove. When the air and the gas enter the mixing chamber, they will move along the spiral plates in the mixing chamber. During the spiral transportation process, the air and the gas are mixed, and finally are transported to the spiral grooves by the spiral plates and are further mixed in the spiral grooves, and finally are transported to one end of the moving block away from the mixing pipe through the spiral grooves.

[0019] Preferably, the diameter of the moving block is smaller than that of the mixing pipe.

[0020] So that a part of the air and the gas will be transported through the gap between the moving block and the mixing pipe. Since the moving block occupies the transportation space in the mixing pipe, the mixture of the air and the gas can be transported in the gap between the moving block and the mixing pipe, and the transportation speed is increased, so as to ensure the normal supply of the mixture to the transportation pipe and ensure the normal combustion of the combustion chamber.

[0021] Preferably, a circular cavity is arranged in the middle of the gas transportation groove, a rotating blade is arranged in the circular cavity, the rotating blade is rotationally connected with the circular cavity, and a speed sensor is arranged in the circular cavity.

[0022] When the air enters the gas transportation groove from the air supply groove, the air first enters the circular cavity. During the transportation process, the air pushes the rotating blade to rotate, so that the rotation speed generated by the rotating blade is captured by the speed sensor. The speed sensor converts the speed signal of the rotating blade into an electrical signal and transmits it to the controller. The controller obtains the current air transportation speed through the strength of the electrical signal, and thus can also adjust the air-fuel ratio of the gas according to the air transportation speed, so that the flame in the combustion chamber is in a stable combustion state.

[0023] Compared with the prior art, the beneficial effects of the present invention are: The adjusting block is slidably connected in the adjusting groove, so that the end of the adjusting block away from the adjusting groove can change its position in the mixing pipe, thereby enabling the diameter of the adjusting ring formed by several adjusting blocks to be changed. At the same time, the space of the air delivery channel also changes with the change of the diameter of the adjusting ring, thus achieving the effect of changing the delivery gas flow rate according to the delivery space, making the delivery volumes of gas and air within the range of the air-fuel ratio, and thus ensuring the stable combustion of the flame in the combustion chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a perspective view of the present invention; Figure 2 is a schematic diagram of the internal structure of the present invention; Figure 3 is a schematic diagram of the structures of the proportioning pipe and the delivery pipe; Figure 4 is a schematic diagram of the internal structure of the proportioning pipe; Figure 5 is a front view of the interior of the proportioning pipe; Figure 6 is a schematic diagram of the structure when the moving block contacts the adjusting block; Figure 7 is a schematic diagram of the moving block; Figure 8 is a schematic diagram of the structure of the adjusting block when it is close to the edge of the mixing pipe; Figure 9 is a schematic diagram of the structure of the adjusting block when it is close to the center of the mixing pipe; In the figures: 1, body; 11, gas pipe; 12, air pipe; 13, exhaust port; 14, combustion chamber; 15, heat exchanger; 16, delivery pipe; 17, jet port; 2, proportioning pipe; 21, gas pump; 22, gas delivery ring; 23, air pump; 24, mixing pipe; 241, sliding groove; 25, adjusting groove; 26, air delivery groove; 27, adjusting block; 271, gas delivery groove; 272, circular cavity; 273, rotating blade; 28, rotating shaft; 29, moving block; 291, sliding block; 30, obliquely rotating ring; 31, arc groove; 32, mixing cavity; 33, spiral plate; 34, spiral groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] Embodiment: As Figures 1-9As shown in the figure, the present invention provides a technical solution for a gas ratio adjustable fully premixed wall-mounted boiler, including a body 1. A plurality of water inlets and outlets are provided at the bottom of the body 1. A gas pipe 11 is provided at the center of the bottom of the body 1. An air pipe 12 is provided on the side wall of the body 1. An exhaust port 13 is provided at the top of the body 1. A combustion chamber 14 is provided inside the body 1. The combustion chamber 14 is communicated with the exhaust port 13. A heat exchanger 15 is provided in the combustion chamber 14. A ratio pipe 2 is provided on the side of the combustion chamber 14 away from the heat exchanger 15.

[0027] As a specific embodiment of the present invention, a plurality of delivery pipes 16 are provided on the side of the ratio pipe 2 close to the combustion chamber 14. A plurality of jet ports 17 are provided at the top of the delivery pipes 16. An ignition needle is provided on one side of the jet port 17.

[0028] As a specific embodiment of the present invention, a gas pump 21 is provided at the bottom of the ratio pipe 2. The gas pump 21 is communicated with the gas pipe 11. An air delivery ring 22 is provided on the side wall of the ratio pipe 2. The air delivery ring 22 is communicated with an air pump 23 through a pipeline. The air pump 23 is communicated with the air pipe 12.

[0029] As a specific embodiment of the present invention, the ratio pipe 2 includes a mixing pipe 24. A plurality of adjustment grooves 25 are provided on the side wall of the mixing pipe 24. The plurality of adjustment grooves 25 are arranged around the axis of the mixing pipe 24. A gas delivery groove 26 is provided on the side of the adjustment groove 25 away from the mixing pipe 24. The gas delivery groove 26 is used to communicate the air delivery ring 22 and the adjustment groove 25.

[0030] As a specific embodiment of the present invention, an adjustment block 27 is provided in the adjustment groove 25. The adjustment block 27 is slidably connected to the adjustment groove 25. The adjustment block 27 is arc-shaped. An air delivery groove 271 is provided in the adjustment block 27. The air delivery groove 271 is respectively communicated with the gas delivery groove 26 and the mixing pipe 24. A rotating shaft 28 is provided on the side of the adjustment block 27 away from the mixing pipe 24. The rotating shaft 28 is rotatably connected to the adjustment groove 25. A semi-tooth ring is provided on the outer wall of the rotating shaft 28. A micro motor is provided in the inner wall of the ratio pipe 2. A gear is provided on the driving shaft of the micro motor. The gear meshes with the semi-tooth ring.

[0031] As a specific embodiment of the present invention, a circular cavity 272 is provided in the middle of the air delivery groove 271. A rotating blade 273 is provided in the circular cavity 272. The rotating blade 273 is rotatably connected to the circular cavity 272. A speed sensor is provided in the circular cavity 272.

[0032] As a specific embodiment of the present invention, a moving block 29 is provided on one side of the adjusting block 27 away from the mixing pipe 24. A plurality of sliding grooves 241 are provided on the inner wall of the mixing pipe 24. A sliding block 291 is provided on one side of the moving block 29 close to the sliding groove 241. The sliding block 291 is slidably connected to the sliding groove 241. A spring is provided between the top of the sliding groove 241 and the bottom of the sliding block 291.

[0033] As a specific embodiment of the present invention, the diameter of the moving block 29 is smaller than the diameter of the mixing pipe 24.

[0034] As a specific embodiment of the present invention, an inclined rotating ring 30 is provided at the bottom of the moving block 29. The inclined rotating ring 30 is rotatably connected to the moving block 29. A plurality of arc-shaped grooves 31 are provided on the side wall of the moving block 29. A mixing cavity 32 is provided in the middle of the moving block 29.

[0035] As a specific embodiment of the present invention, the arc-shaped grooves 31 communicate with the mixing pipe 24 and the mixing cavity 32 respectively. A plurality of spiral plates 33 are provided in the mixing cavity 32. A plurality of spiral grooves 34 are provided at the top of the mixing cavity 32. The number of the spiral grooves 34 is less than the number of the spiral plates 33.

[0036] The working principle of the present invention: The gas pump 21 extracts the gas in the gas pipe 11 and conveys the gas to the ratio pipe 2, while the air pump 23 extracts the air in the air pipe 12 and conveys the air into the air delivery ring 22; the gas enters the mixing pipe 24 under the action of the gas pump 21, and the air enters the air delivery ring 22 under the action of the air pump 23. Subsequently, the air is conveyed to the air delivery groove 26 through the air delivery ring 22, and then the air is conveyed to the air delivery groove 271 through the air delivery groove 26 and is conveyed from the air delivery groove 271 to the mixing pipe 24; When the air enters the air delivery groove 271 from the air delivery groove 26, the air first enters the circular cavity 272. During the conveying process, the air pushes the rotating blade 273 to rotate, so that the rotation speed generated by the rotating blade 273 is captured by the speed sensor. The speed sensor converts the speed signal of the rotating blade 273 into an electrical signal and transmits it to the controller. The controller obtains the current air conveying speed according to the strength of the electrical signal, and thus adjusts the air-fuel ratio of the gas according to the air conveying speed, so that the flame in the combustion chamber 14 is in a stable combustion state; The gas is transported to the mixing pipe 24 under the action of the gas pump 21. When the gas is further transported, it will push the moving block 29 to move. At this time, the thrust generated by the gas transportation is greater than the gravity of the moving block 29, so that the thrust of the gas and the elastic force of the spring cooperate with each other to lift the moving block 29, making the moving block 29 move to the side of the adjusting block 27 away from the gas pump 21. When the moving block 29 moves, it will disengage from several adjusting blocks 27. Then, the two sections of the mixing pipe 24 are immediately in a connected state, enabling the gas and air to mix after the mixing pipe 24 is connected; When the gas pump 21 is turned off, there is no gas being transported into the mixing pipe 24 at this time, so that the thrust of the transported gas is less than the gravity of the moving block 29. Then, the moving block 29 will move to the side closer to the gas pump 21, causing the adjusting block 27 to extend into the arc-shaped groove 31. Then, the moving block 29 fits with several adjusting blocks 27, making the two sections of the mixing pipe 24 isolated and closed again, preventing the mixture of air and gas from remaining in the mixing pipe 24 and thus avoiding unsafe problems; When the gas transportation power of the gas pump 21 decreases, due to the slow gas transportation speed, at this time, the drive shaft of the micro motor drives the gear to rotate. During the rotation of the gear, it meshes with the semi-tooth ring on the rotating shaft 28, so that the rotating shaft 28 drives the adjusting block 27 to rotate. The adjusting block 27 rotates along the adjusting groove 25. One end of several adjusting blocks 27 away from the adjusting groove 25 rotates from the edge of the mixing pipe 24 towards the center of the mixing pipe 24. The rotation of several adjusting blocks 27 makes the diameter of the adjusting ring formed by several adjusting blocks 27 further shrink. Then, when the gas is transported to the adjusting ring, due to the influence of the diameter of the adjusting ring, the flow rate of the gas is further accelerated. And because the adjusting block 27 rotates towards the center of the mixing pipe 24, at this time, the distance between one end of the adjusting block 27 away from the adjusting groove 25 and the inner wall of the mixing pipe 24 increases. Then, when the air is transported from the air delivery groove 271 to the mixing pipe 24, the air delivery space increases, and thus the air delivery speed will slow down. The faster-flowing gas is accelerated by the adjusting ring, so that a larger volume of gas flows into the side of the adjusting ring away from the gas pump 21, while a smaller volume of air with a slower flow rate flows into the gas on the side of the adjusting ring away from the gas pump 21. Then, the volume of gas and the volume of air are within a suitable air-fuel ratio range, thus ensuring the stable combustion of the flame in the subsequent combustion chamber 14; When the power of the gas pump 21 increases, due to the relatively fast conveying speed of the gas, at this time, the rotating shaft 28 drives the adjusting block 27 to reset. The adjusting block 27 rotates along the adjusting groove 25, and one end of several adjusting blocks 27 away from the adjusting groove 25 rotates from the center of the mixing tube 24 to the edge of the mixing tube 24, so that the diameter of the adjusting ring formed by several adjusting blocks 27 is further enlarged. Then, when the gas is conveyed to the adjusting ring, due to the influence of the diameter of the adjusting ring, the flowing speed of the gas decreases. And because the adjusting block 27 rotates towards the edge of the mixing tube 24, at this time, the distance between one end of the adjusting block 27 away from the adjusting groove 25 and the inner wall of the mixing tube 24 is further reduced. Then, when the air is conveyed from the air conveying groove 271 to the mixing tube 24, the conveying space of the air decreases, and thus the conveying speed of the air will increase, so that the volume of the gas conveyed when the power of the gas pump 21 increases is the same as the volume of the gas conveyed when the power of the gas pump 21 decreases per unit time to the side of the adjusting ring away from the gas pump 21. And the volume of the air conveyed when the power of the gas pump 21 increases is also the same as the volume of the air conveyed when the power of the gas pump 21 decreases per unit time to the side of the adjusting ring away from the gas pump 21, further making the volume of the gas and the volume of the air within a suitable air-fuel ratio range, thereby ensuring the stable combustion of the flame in the subsequent combustion chamber 14; After the gas flows through the adjusting ring composed of several adjusting blocks 27, the gas will encounter the obliquely rotating ring 30, and then the gas will push the obliquely rotating ring 30 to rotate. When the obliquely rotating ring 30 rotates, it will make the gas flow from the center of the mixing tube 24 to the edge of the mixing tube 24. Then, when flowing to the edge chamber of the mixing tube 24, the gas will meet the air conveyed from the edge, and then the gas and the air will flow towards the arc-shaped groove 31 together and be conveyed to the mixing chamber 32 through the arc-shaped groove 31; The air and the gas meet between the mixing tube 24, the adjusting block 27 and the moving block 29, and are conveyed from the mixing tube 24 to the mixing chamber 32 through the arc-shaped groove 31. When the air and the gas enter the mixing chamber 32, they will move along the spiral plate 33 in the mixing chamber 32. During the spiral conveying process, the air and the gas are mixed, and finally are conveyed to the spiral groove 34 by the spiral plate 33 and are further mixed in the spiral groove 34, and finally are conveyed to one end of the moving block 29 away from the mixing tube 24 through the spiral groove 34; So that a part of the air and the gas will be conveyed from the gap between the moving block 29 and the mixing tube 24. Since the moving block 29 occupies the conveying space in the mixing tube 24, when the air-gas mixture can be conveyed in the gap between the moving block 29 and the mixing tube 24, the conveying speed increases, thereby ensuring the normal supply of the mixture to the conveying pipe 16 and ensuring the normal combustion of the combustion chamber 14; The mixture of air and gas after mixing is transported from the proportioning pipe 2 to the delivery pipe 16, and the mixture is transported by the delivery pipe 16 to a number of jet nozzles 17, and is ejected through the jet nozzles 17 into the combustion chamber 14. During the ejection process, the ignition needle ignites the ejected mixture.

[0037] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A gas-mixing ratio adjustable fully premixed wall-mounted boiler, characterized in that: It includes a body (1). A number of water inlets and outlets are provided at the bottom of the body (1). A gas pipe (11) is provided at the center of the bottom of the body (1). An air pipe (12) is provided on the side wall of the body (1). An exhaust port (13) is provided at the top of the body (1). A combustion chamber (14) is provided inside the body (1). The combustion chamber (14) is communicated with the exhaust port (13). A heat exchanger (15) is provided in the combustion chamber (14). A proportioning pipe (2) is provided on the side of the combustion chamber (14) away from the heat exchanger (15).

2. The gas ratio adjustable fully premixed wall-mounted boiler according to claim 1, characterized in that: A number of delivery pipes (16) are provided on the side of the proportioning pipe (2) close to the combustion chamber (14). A number of jet ports (17) are provided at the top of the delivery pipes (16). An ignition needle is provided on one side of the jet port (17).

3. The gas-mixing ratio adjustable fully premixed wall-mounted boiler according to claim 1, characterized in that: A gas pump (21) is provided at the bottom of the proportioning pipe (2). The gas pump (21) is communicated with the gas pipe (11). An air delivery ring (22) is provided on the side wall of the proportioning pipe (2). The air delivery ring (22) is communicated with an air pump (23) through a pipe. The air pump (23) is communicated with the air pipe (12).

4. A gas ratio adjustable fully premixed wall-mounted boiler according to claim 3, characterized in that: The proportioning pipe (2) includes a mixing pipe (24). A number of adjusting grooves (25) are provided on the side wall of the mixing pipe (24). The number of adjusting grooves (25) is arranged around the axis of the mixing pipe (24). An air delivery groove (26) is provided on the side of the adjusting groove (25) away from the mixing pipe (24). The air delivery groove (26) is used to communicate the air delivery ring (22) and the adjusting groove (25).

5. A gas ratio adjustable fully premixed wall-mounted boiler according to claim 4, characterized in that: An adjusting block (27) is provided in the adjusting groove (25). The adjusting block (27) is slidably connected with the adjusting groove (25). The adjusting block (27) is arc-shaped. An air delivery groove (271) is provided in the adjusting block (27). The air delivery groove (271) is communicated with the air delivery groove (26) and the mixing pipe (24) respectively. A rotating shaft (28) is provided on the side of the adjusting block (27) away from the mixing pipe (24). The rotating shaft (28) is rotatably connected with the adjusting groove (25). A semi-tooth ring is provided on the outer wall of the rotating shaft (28). A micro motor is provided in the inner wall of the proportioning pipe (2). A driving shaft of the micro motor is provided with a gear. The gear meshes with the semi-tooth ring.

6. The gas ratio adjustable fully premixed wall-mounted boiler according to claim 5, characterized in that: A moving block (29) is provided on the side of the adjusting block (27) away from the mixing pipe (24). A number of sliding grooves (241) are provided on the inner wall of the mixing pipe (24). A sliding block (291) is provided on the side of the moving block (29) close to the sliding groove (241). The sliding block (291) is slidably connected with the sliding groove (241). A spring is provided between the top of the sliding groove (241) and the bottom of the sliding block (291).

7. The gas ratio adjustable fully premixed wall-mounted boiler according to claim 6, characterized in that: An inclined rotating ring (30) is provided at the bottom of the moving block (29). The inclined rotating ring (30) is rotatably connected with the moving block (29). A number of arc-shaped grooves (31) are provided on the side wall of the moving block (29). A mixing chamber (32) is provided in the middle of the moving block (29).

8. A gas ratio adjustable fully premixed wall-mounted boiler according to claim 7, characterized in that: The arc-shaped grooves (31) are respectively communicated with the mixing pipe (24) and the mixing chamber (32). A plurality of spiral plates (33) are arranged in the mixing chamber (32). A plurality of spiral grooves (34) are arranged at the top of the mixing chamber (32). The number of the spiral grooves (34) is less than that of the spiral plates (33).

9. The gas-mixing ratio adjustable fully premixed wall-mounted boiler according to claim 6, wherein: The diameter of the moving block (29) is smaller than that of the mixing pipe (24).

10. A gas ratio adjustable fully premixed wall-mounted boiler according to claim 5, characterized in that: A circular cavity (272) is arranged in the middle of the air delivery groove (271). A rotating blade (273) is arranged in the circular cavity (272). The rotating blade (273) is rotatably connected with the circular cavity (272). A speed sensor is arranged in the circular cavity (272).

Images