Linkage structure of air sensor and gas sensor of gas heating water heater

Abstract

The utility model relates to a kind of linkage structure of air sensor and gas sensor of gas heating hot water furnace, including shell, its characterized in that it further includes electric gas proportional valve, gas flow sensor, air flow sensor, air gas mixer, full premixing fan, combustion heat exchange device, smoke exhaust air inlet device and control circuit board;Electric gas proportional valve and gas flow sensor are arranged in shell, the import of electric gas proportional valve is communicated with external gas, and the outlet of electric gas proportional valve is communicated with the import of gas flow sensor;The full premixing fan, air flow sensor, electric gas proportional valve and gas flow sensor are electrically connected with control circuit board respectively.Its advantage is that this gas heating hot water furnace can change air intake and gas intake according to actual use, so that air and gas ratio is always in the best ratio, guarantee gas combustion, reduce carbon monoxide emission, and energy utilization efficiency is high.

Description

Technical Field

[0001] This utility model relates to an air sensor and a linkage structure for a gas-fired heating and hot water boiler. Background Technology

[0002] Currently, commercially available gas-fired heating and hot water boilers include a shell, gas valve, fully premixed fan, combustion heat exchange device, air-gas mixer, and exhaust air intake device. The gas proportional valve, combustion heat exchange device, and exhaust air intake device are installed inside the shell. The fully premixed fan is connected to the combustion heat exchange device, the air outlet of the air-gas mixer is connected to the air inlet of the fully premixed fan, the air inlet of the air-gas mixer is connected to the inside of the shell, and the gas inlet of the air-gas mixer is connected to the gas valve through a pipe. Its disadvantage is that the air-fuel ratio is relatively fixed. If you want to change the air-fuel ratio, you need to manually adjust the screw on the gas valve, which requires a maintenance personnel to come and adjust it. Especially when the gas pressure is low but it can still barely burn, the carbon monoxide emitted will seriously exceed the standard, causing great pollution to the environment. Summary of the Invention

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a linkage structure between an air sensor and a gas sensor for a gas-fired heating and hot water boiler. This gas-fired heating and hot water boiler can change the air intake and gas intake according to the actual usage conditions, so that the air and gas ratio is always at the optimal ratio, ensuring complete combustion of gas, reducing carbon monoxide emissions, and achieving high energy utilization efficiency.

[0004] To achieve the above objectives, this utility model provides an air sensor and a linkage structure for a gas-fired heating and hot water boiler, comprising a housing, characterized in that it further includes... An electric gas proportional valve and a gas flow sensor; the electric gas proportional valve and the gas flow sensor are housed inside the housing, the inlet of the electric gas proportional valve is connected to the external gas, and the outlet of the electric gas proportional valve is connected to the inlet of the gas flow sensor. An air flow sensor, an air-gas mixer, and a fully premixed fan are provided; the air flow sensor, air-gas mixer, and fully premixed fan are housed inside a housing, the inlet of the air flow sensor is connected to the internal space of the housing, the outlet of the air flow sensor is connected to the air inlet of the air-gas mixer, the outlet of the gas flow sensor is connected to the gas inlet of the air-gas mixer, and the mixed gas outlet of the air-gas mixer is connected to the fully premixed fan. Combustion heat exchange device and flue gas air intake device; the combustion heat exchange device is located inside the shell, the flue gas air intake device is located on the shell, the combustion heat exchange device is connected to the fully premixed fan, and the flue gas air intake device is connected to the combustion heat exchange device. Control circuit board; the fully premixed fan, air flow sensor, electric gas proportional valve and gas flow sensor are electrically connected to the control circuit board respectively. The electric gas proportional valve changes the gas flow rate according to the air intake and gas intake. The fully premixed fan changes the air flow rate according to the air intake and gas intake.

[0005] In this technical solution, the exhaust and air intake device includes an exhaust pipe and an air intake through hole; the air intake through hole is provided on the housing, the exhaust pipe passes through the air intake through hole and communicates with the exhaust port of the combustion heat exchange device, and an air intake annular groove is formed between the exhaust pipe and the air intake through hole.

[0006] In this technical solution, the gas flow sensor includes a gas sensor housing, a gas sensing circuit board, a gas sensing probe, and a gas circuit board cover; the gas sensor housing is provided with a gas inlet, a gas channel, and a gas outlet, the gas sensing probe is located in the gas channel, the gas sensing circuit board is located on the gas sensor housing and is electrically connected to the gas sensing probe; the gas circuit board cover is located on the gas sensor housing and covers the gas sensing circuit board.

[0007] In this technical solution, the air flow sensor includes an air sensor housing, an air sensing circuit board, an air sensing probe, and an air circuit board cover; the gas sensor housing is provided with an air inlet, a gas passage, and an air outlet, the air sensing probe is located in the gas passage, the air sensing circuit board is located on the air sensor housing and is electrically connected to the air sensing probe; the air circuit board cover is located on the air sensor housing and covers the air sensing circuit board.

[0008] The advantages of this utility model compared with the prior art are: this gas-fired heating and hot water boiler can change the air intake and gas intake according to the actual usage conditions, so that the air and gas ratio is always at the optimal ratio, ensuring complete combustion of gas, reducing carbon monoxide emissions, and achieving high energy utilization efficiency. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the gas flow sensor of this utility model; Figure 3 This is a schematic diagram of the structure of the air flow sensor of this utility model. Detailed Implementation

[0010] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0011] In the description of this utility model, the terms "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and do not require that this utility model must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0012] In this utility model, unless otherwise explicitly specified and limited, the terms "set up" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or a detachable arrangement or an integral part; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0013] like Figures 1 to 3 As shown, it is an air sensor and a linkage structure for a gas-fired heating and hot water boiler, including a housing 1, characterized in that it also includes... Electric gas proportional valve 2 and gas flow sensor 3; the electric gas proportional valve 2 and gas flow sensor 3 are installed inside the housing 1, the inlet of the electric gas proportional valve 2 is connected to the external gas, and the outlet of the electric gas proportional valve 2 is connected to the inlet of the gas flow sensor 3. The system includes an air flow sensor 6, an air-gas mixer 7, and a fully premixed fan 4. The air flow sensor 6, air-gas mixer 7, and fully premixed fan 4 are housed inside a housing 1. The inlet of the air flow sensor 6 is connected to the internal space of the housing 1, and the outlet of the air flow sensor 6 is connected to the air inlet 71 of the air-gas mixer 7. The outlet of the gas flow sensor 3 is connected to the gas inlet 72 of the air-gas mixer 7, and the mixing outlet 73 of the air-gas mixer 7 is connected to the fully premixed fan 4. Combustion heat exchange device 5 and exhaust air intake device 8; the combustion heat exchange device 5 is located inside the shell 1, the exhaust air intake device 8 is located on the shell 1, the combustion heat exchange device 5 is connected to the fully premixed fan 4, and the exhaust air intake device 8 is connected to the combustion heat exchange device 5. Control circuit board 9; the fully premixed fan 4, air flow sensor 6, electric gas proportional valve 2 and gas flow sensor 3 are electrically connected to the control circuit board 9 respectively. The electric gas proportional valve 2 changes the gas flow rate according to the air intake and gas intake. The fully premixed fan 4 changes the air flow rate according to the air intake and gas intake.

[0014] In use, the gas flow sensor 3 senses the gas flow rate and transmits a signal to the control circuit board 9, and the air flow sensor 6 senses the air flow rate and transmits a signal to the control circuit board 9. The control circuit board 9 adjusts the electric gas proportional valve 2 and the fully premixed fan 4 according to the needs of the combustion conditions, thereby changing the air flow and the gas flow. At this time, the air flow sensor 6 and the gas flow sensor 3 transmit the corresponding flow information in real time. The control circuit board 9 determines whether complete combustion has been achieved and whether further adjustment is needed based on the flow information, thereby ensuring more complete combustion and more environmentally friendly flue gas emissions.

[0015] In this embodiment, the exhaust and air intake device 8 includes an exhaust pipe 81 and an air intake through hole; the air intake through hole is provided on the housing 1, the exhaust pipe 81 passes through the air intake through hole and communicates with the exhaust port of the combustion heat exchange device 5, and an air intake ring groove 82 is formed between the exhaust pipe 81 and the air intake through hole.

[0016] The air enters the housing 1 through the air inlet ring groove 82, and the flue gas after combustion in the combustion heat exchange device 5 is discharged through the exhaust pipe 81. In this embodiment, the gas flow sensor 3 includes a gas sensor housing 31, a gas sensing circuit board 32, a gas sensing probe 33, and a gas circuit board cover 34. The gas sensor housing is provided with a gas inlet 311, a gas channel, and a gas outlet 312. The gas sensing probe 33 is located in the gas channel. The gas sensing circuit board 32 is located on the gas sensor housing 31 and is electrically connected to the gas sensing probe 33. The gas circuit board cover 34 is located on the gas sensor housing 31 and covers the gas sensing circuit board 32.

[0017] In this embodiment, the air flow sensor 6 includes an air sensor housing 61, an air sensing circuit board 62, an air sensing probe 63, and an air circuit board cover 64. An air inlet 611, a gas passage, and an air outlet 612 are respectively provided on the gas sensor housing. The air sensing probe 63 is located in the gas passage. The air sensing circuit board 62 is located on the air sensor housing 61 and is electrically connected to the air sensing probe 63. The air circuit board cover 64 is located on the air sensor housing 61 and covers the air sensing circuit board 62.

[0018] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations of these embodiments without departing from the principles and spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. An air sensor and a linkage structure for a gas-fired heating hot water boiler, comprising a housing (1), characterized in that... Also includes Electric gas proportional valve (2) and gas flow sensor (3); the electric gas proportional valve (2) and gas flow sensor (3) are installed inside the housing (1), the inlet of the electric gas proportional valve (2) is connected to the external gas, and the outlet of the electric gas proportional valve (2) is connected to the inlet of the gas flow sensor (3). An air flow sensor (6), an air-gas mixer (7), and a fully premixed fan (4) are provided inside a housing (1). The inlet of the air flow sensor (6) is connected to the internal space of the housing (1), the outlet of the air flow sensor (6) is connected to the air inlet (71) of the air-gas mixer (7), the outlet of the gas flow sensor (3) is connected to the gas inlet (72) of the air-gas mixer (7), and the mixing outlet (73) of the air-gas mixer (7) is connected to the fully premixed fan (4). Combustion heat exchange device (5) and exhaust air intake device (8); the combustion heat exchange device (5) is located inside the shell (1), the exhaust air intake device (8) is located on the shell (1), the combustion heat exchange device (5) is connected to the fully premixed fan (4), and the exhaust air intake device (8) is connected to the combustion heat exchange device (5). Control circuit board (9); The fully premixed fan (4), air flow sensor (6), electric gas proportional valve (2) and gas flow sensor (3) are electrically connected to the control circuit board (9) respectively. The electric gas proportional valve (2) changes the gas flow rate according to the air intake and gas intake. The fully premixed fan (4) changes the air flow rate according to the air intake and gas intake.

2. The linkage structure of the air sensor and gas sensor of the gas-fired heating hot water boiler according to claim 1, characterized in that... The exhaust and air intake device (8) includes an exhaust pipe (81) and an air intake through hole; the air intake through hole is located on the housing (1), the exhaust pipe (81) passes through the air intake through hole and communicates with the exhaust port of the combustion heat exchange device (5), and an air intake ring groove (82) is formed between the exhaust pipe (81) and the air intake through hole.

3. The linkage structure of the air sensor and gas sensor of the gas-fired heating hot water boiler according to claim 1, characterized in that... The gas flow sensor (3) includes a gas sensor housing (31), a gas sensing circuit board (32), a gas sensing probe (33), and a gas circuit board cover (34). A gas inlet (311), a gas channel, and a gas outlet (312) are respectively provided on the gas sensor housing. The gas sensing probe (33) is located in the gas channel. The gas sensing circuit board (32) is located on the gas sensor housing (31) and is electrically connected to the gas sensing probe (33). The gas circuit board cover (34) is located on the gas sensor housing (31) and covers the gas sensing circuit board (32). The gas inlet (311) is connected to the outlet of the electric gas proportional valve (2), and the gas outlet (312) is connected to the gas inlet (72) of the air-gas mixer (7).

4. The linkage structure of the air sensor and gas sensor of the gas-fired heating hot water boiler according to claim 1, characterized in that... The air flow sensor (6) includes an air sensor housing (61), an air sensing circuit board (62), an air sensing probe (63), and an air circuit board cover (64). An air inlet (611), a gas passage, and an air outlet (612) are respectively provided on the gas sensor housing. The air sensing probe (63) is located in the gas passage. The air sensing circuit board (62) is located on the air sensor housing (61) and is electrically connected to the air sensing probe (63). The air circuit board cover (64) is located on the air sensor housing (61) and covers the air sensing circuit board (62).

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