CN210568397U - Full-premixing gas device - Google Patents
Full-premixing gas device Download PDFInfo
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- CN210568397U CN210568397U CN201920684936.9U CN201920684936U CN210568397U CN 210568397 U CN210568397 U CN 210568397U CN 201920684936 U CN201920684936 U CN 201920684936U CN 210568397 U CN210568397 U CN 210568397U
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Abstract
The utility model relates to a full premix gas device, including gas accuse gas proportional valve, gas intake pipe, fan, combustor, self-adaptation flow regulator, controller, heat exchanger, first temperature sensor and flow sensor. The full premix gas device can acquire the fan rotational speed of fan and hydrothermal discharge size reaches the temperature rise size, and the adjustment gas flow size in the gas intake pipe, so can make full premix gas device be in the normal combustion state of full premix all the time, air and gas proportion remain stable, full premix gas device keeps burning stable, the thermal efficiency is higher, the bad phenomenon that the instability because of air supply composition leads to water heater thermal efficiency not high, the burning abnormal sound, the burning is unstable, harmful fume emission height, even burns out full premix gas device can not appear.
Description
Technical Field
The utility model relates to a gas device especially relates to a full premix gas device.
Background
The fully premixed gas device, such as a fully premixed gas water heater, is an efficient energy-saving environment-friendly gas appliance, has the characteristics of high thermal efficiency and low emission content of CO and NOx, and is generally recognized all over the world. However, due to the unstable gas source components, the adverse phenomena of low thermal efficiency, abnormal combustion sound, unstable combustion, high harmful smoke emission, poor heat exchange effect, even burnout of the water heater, weak durability of the induction structure, easy damage, poor stability and the like are easy to occur.
SUMMERY OF THE UTILITY MODEL
The technical problem solved by the utility model is to provide a full premix gas device, it can avoid appearing unfavorable phenomena such as the thermal efficiency is low, burning abnormal sound, harmful flue gas emission height when the air supply composition is unstable.
The technical problem is solved by the following technical scheme:
a fully premixed gas appliance comprising: the gas control combustion gas proportional valve comprises a gas control combustion gas proportional valve, a combustion gas inlet pipe, a fan and a combustor, wherein the gas inlet of the gas control combustion gas proportional valve is communicated with a combustion gas source, the gas outlet of the gas control combustion gas proportional valve is communicated with the combustion gas inlet pipe, the combustion gas inlet pipe is communicated with the fan, and the fan is used for mixing combustion gas input by the combustion gas inlet pipe with external air and then conveying the mixture into the combustor; the self-adaptive flow regulator is arranged on the gas inlet pipe and is used for regulating the gas flow on the gas inlet pipe; the controller is electrically connected with the fan and the adaptive flow regulator respectively; the combustor is used for transferring heat to the heat exchanger, the heat exchanger is used for heating cold water to hot water, the first temperature sensor is used for obtaining the temperature rise of the cold water to the hot water, the flow sensor is used for obtaining the water flow of the hot water, and the controller is further respectively connected with the first temperature sensor and the flow sensor in an electric mode.
Full premix gas device, compare produced beneficial effect with the background art: the full premix gas device can acquire the fan rotational speed of fan and hydrothermal discharge size and the temperature rise size, according to fan rotational speed and hydrothermal discharge size and the temperature rise size confirms the air supply composition that actually enters into in the combustor, and according to the air supply composition adjustment the gas flow size in the gas intake pipe so can make full premix gas device be in the normal combustion state of full premix all the time, and air and gas proportion remain stable, and full premix gas device keeps burning stable, the thermal efficiency is higher, can not appear because of the unstability of air supply composition lead to the water heater thermal efficiency not high, the burning abnormal sound, the burning unstability, harmful flue gas discharge height, burn out the bad phenomenon of full premix gas device even.
In one embodiment, the fully premixed gas device further comprises a second temperature sensor, the second temperature sensor is arranged on the combustor, and the second temperature sensor is used for acquiring the flame temperature of the combustor; the controller is also electrically connected with the second temperature sensor. Therefore, the controller can more accurately obtain the gas source components according to the fan rotating speed, the flame temperature, the water flow of the hot water and the temperature rise, and correspondingly adjust the gas flow on the gas inlet pipe according to the gas source components, so that the fully premixed gas device is always in a fully premixed normal combustion state.
In one of them embodiment, full premix gas device still include and discharge fume tub and wind pressure sensor, the combustor passes through discharge fume the pipe outwards discharge the flue gas, wind pressure sensor set up in discharge fume on the pipe, wind pressure sensor with controller electric connection. So, the controller according to the fan rotational speed, flame temperature, wind pressure size, hydrothermal discharge size and the temperature rise size can more accurately obtain the air supply composition to according to the corresponding adjustment of air supply composition the gas flow size in the gas intake pipe, so can make full premix gas device be in full premix's normal combustion state all the time.
In one embodiment, the second temperature sensor and/or the first temperature sensor is a thermocouple.
In one embodiment, the fully premixed gas device further comprises a nozzle arranged between the gas inlet pipe and the fan, an air inlet of the nozzle is communicated with the end part of the gas inlet pipe, and an air nozzle of the nozzle is communicated with an air inlet of the fan.
In one embodiment, the adaptive flow regulator is an electric flow regulator valve.
In one embodiment, the adaptive flow regulator is an electrically controlled plug valve or an electrically controlled gas proportional valve.
In one of them embodiment, automatically controlled plug valve include the outer tube, and rotationally set up in interior sleeve pipe in the outer tube, be equipped with first business turn over gas port on the lateral wall of outer tube, be equipped with second business turn over gas port A, third business turn over gas port B and fourth business turn over gas port C along the rotation direction in proper order on the interior sleeve pipe's the lateral wall, the opening size of second business turn over gas port A, third business turn over gas port B and fourth business turn over gas port C increases in proper order, when interior sleeve pipe rotated one of them operating condition, second business turn over gas port A, third business turn over gas port B or fourth business turn over gas port C with first business turn over gas port is linked together. Thus, when the gas source component is judged to be the reference gas, the third gas inlet and outlet B is kept communicated with the first gas inlet and outlet; when the gas source component is judged to be yellow flame gas or between the reference gas and the yellow flame gas, controlling the second gas inlet and outlet A to be communicated with the first gas inlet and outlet; and when the gas source component is the flame gas or is between the reference gas and the flame gas, controlling the fourth gas inlet and outlet C to be communicated with the first gas inlet and outlet.
In one embodiment, the electric control plug valve further comprises a limiting rod arranged on the side wall of the outer sleeve, the outer side wall of the inner sleeve is provided with a limiting groove, and the limiting rod is arranged in the limiting groove and is in limiting fit with two side walls opposite to the limiting groove. Therefore, the limiting rod is in limiting fit with the two opposite side walls of the limiting groove to play a limiting role, the transition rotation of the inner sleeve can be avoided, when the second air inlet and outlet A is communicated with the first air inlet and outlet, the limiting rod is in interference fit with one of the two opposite side walls of the limiting groove, and the inner sleeve is prevented from continuing to rotate; when the fourth air inlet and outlet C is communicated with the first air inlet and outlet, the limiting rod is in interference fit with the other side wall of the two opposite side walls of the limiting groove, so that the inner sleeve is prevented from continuously rotating.
In one embodiment, the fully premixed gas device further comprises a casing, and the pneumatic control gas proportional valve, the gas inlet pipe, the fan, the burner, the adaptive flow regulator, the second temperature sensor and the controller are all arranged in the casing.
Drawings
Fig. 1 is a schematic structural diagram of a fully premixed gas device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a gas control proportional valve, a gas inlet pipe, a fan, a burner, an adaptive flow regulator and a controller in a full premix gas device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of the adaptive flow regulator according to an embodiment of the present invention, which works in a reference gas state;
fig. 4 is a schematic structural diagram of the adaptive flow regulator according to an embodiment of the present invention, which works in a state of leaving flame gas;
fig. 5 is a schematic structural diagram of the adaptive flow regulator according to an embodiment of the present invention, which operates in a yellow flame gas state;
fig. 6 is a schematic structural diagram of an adaptive flow regulator according to an embodiment of the present invention, which operates between a reference gas and a yellow flame gas;
fig. 7 is a schematic structural diagram of an adaptive flow regulator according to an embodiment of the present invention, which operates between a reference gas and a flame gas.
Reference numerals:
10. the gas control fuel gas proportional valve 20, a fuel gas inlet pipe 30, a fan 40, a burner 50, an adaptive flow regulator 51, an outer sleeve pipe 511, a first gas inlet and outlet 52, an inner sleeve pipe 521, a limiting groove 53, a limiting rod 60, a second temperature sensor 70, a controller 80, a smoke exhaust pipe 90, a wind pressure sensor 100, a heat exchanger 110, a nozzle 120 and a casing.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.
In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the description of the present invention, it is to be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly connected" to another element, there are no intervening elements present.
Generally, taking a gas water heater of natural gas as an example, the natural gas is 12T natural gas, and the standard component is 100% methane; the gas water heater takes 20kW as an example, and is calculated according to the following equation and the heat value of a gas source:
CH4+2O2＝CO2+2H2O
CH4low heat value of 34.02MJ/m3Huabai number 50.72MJ/m3，
The 20kW gas water heater needs 12T natural gas 2.1167m3Oxygen 4.2334m required for theoretical complete combustion3(ii) a Boundary parameters for natural gas: the yellow flame gas comprises 87% of methane and 13% of propane, and the low heat value is 41.03MJ/m3Huabai number 54.77MJ/m3(ii) a The tempering gas comprises 77% of methane and 23% of hydrogen, and has a low heat value of 28.54MJ/m3Huabai number 47.88MJ/m3(ii) a The free flame gas component is 92.5 percent of methane and 7.5 percent of nitrogen, and the low heat value is 31.46MJ/m3Huabai number 45.66MJ/m3(ii) a The single component fuel gas is calculated according to the following equation and the heat value of the gas source:
C3H8+5O2＝3CO2+4H2O H2+0.5O2＝H2O
C3H8low heat value 87.9951MJ/m3H2 Low Heat value 10.217MJ/m3
Due to the different densities of different air sources, the air flow rates are not uniform.
The gas flow of the gas water heater is calculated as: lg-0.0035 u d2*(H/S)1/2
In the formula
Lg-circular nozzle 110 air flow (m)3/h)
u-nozzle 110 flow coefficient
d-circular nozzle 110 diameter (mm)
H-gas pressure (Pa) before nozzle 110
S-gas relative density
From the above formula, it can be calculated that the amount of the gas flow 1.9067m of the yellow flame gas actually entering the burner 403Actual heat load 21.73kW, theoretical oxygen required for complete combustion 4.557m3(ii) a The amount of flow 2.3692m of the tempering gas actually entering the burner 403Actual heat load 18.78kW, theoretical oxygen required for complete combustion 3.921m3(ii) a The gas flow leaving the flame gas actually entering the burner 40 is 2.06m3Actual heat load 18.0kW, theoretical oxygen required for complete combustion 3.811m3(ii) a The thermal load of the reference gas is 20kW, and the theoretical oxygen required for complete combustion is 4.2334m3The difference is very large, the phenomenon that the oxygen possibly supplied during the combustion with the yellow flame gas is insufficient, the incomplete combustion is caused, the flame outer flame is lengthened, the oxygen supplied during the combustion with the flame-separating gas is too much, the flame is separated from the flame, the combustion is unstable, harmful gases such as CO and the like are rapidly increased, and even the water heater is burnt out.
In one embodiment, referring to fig. 1 and 2, a fully premixed gas device includes a gas control gas proportional valve 10, a gas inlet pipe 20, a fan 30, a burner 40, an adaptive flow regulator 50, a controller 70, a heat exchanger 100, a first temperature sensor and a flow sensor.
The air inlet of the air control gas proportional valve 10 is used for being communicated with a gas source, and the air outlet of the air control gas proportional valve 10 is communicated with the gas inlet pipe 20. The gas inlet pipe 20 is communicated with the fan 30. The fan 30 is configured to mix the gas input from the gas inlet pipe 20 with external air and then deliver the mixed gas to the combustor 40. The adaptive flow regulator 50 is arranged on the gas inlet pipe 20, and the adaptive flow regulator 50 is used for regulating the gas flow on the gas inlet pipe 20. The controller 70 is electrically connected to the blower 30 and the adaptive flow regulator 50, respectively. The burner 40 is used for transmitting heat to the heat exchanger 100, the heat exchanger 100 is used for heating cold water to hot water, the first temperature sensor is used for acquiring the temperature rise of the cold water to the hot water, the flow sensor is used for acquiring the water flow of the hot water, the controller 70 is further respectively electrically connected with the first temperature sensor and the flow sensor, and the controller 70 adjusts the gas flow on the gas inlet pipe 20 according to the fan rotating speed, the water flow of the hot water and the temperature rise.
Foretell full premix gas device, full premix gas device can acquire the fan rotational speed of fan 30 and the flame temperature of combustor 40, according to fan rotational speed with the air supply composition in the combustor 40 is actually entered into to the flame temperature determination, and according to the air supply composition adjustment the gas flow size in the gas intake pipe 20 so can make full premix gas device be in full premix's normal combustion state all the time, and air and gas proportion remain stable, and full premix gas device keeps burning stable, the thermal efficiency is higher, can not appear because of the unstability of air supply composition leads to the water heater thermal efficiency not high, the burning abnormal sound, the burning is unstable, harmful flue gas discharge is high, burn out the bad phenomenon of full premix gas device even.
In one embodiment, referring to fig. 1 and 2, the fully premixed gas burner further comprises a second temperature sensor 60. The second temperature sensor 60 is disposed on the burner 40, and the second temperature sensor 60 is configured to obtain a flame temperature of the burner 40. The controller 70 is further electrically connected to the second temperature sensor 60, and the controller 70 adjusts the gas flow rate of the gas inlet pipe 20 according to the fan rotation speed, the flame temperature, the hot water flow rate and the temperature rise.
Further, referring to fig. 1 and 2, the fully premixed gas device further includes a smoke exhaust pipe 80 and a wind pressure sensor 90. The burner 40 discharges the flue gas to the outside through the smoke discharge pipe 80. The wind pressure sensor 90 is disposed on the smoke exhaust pipe 80, and the wind pressure sensor 90 is electrically connected to the controller 70. The controller 70 adjusts the gas flow on the gas inlet pipe 20 according to the fan speed, the flame temperature, the wind pressure, the hot water flow and the temperature rise. So, the controller 70 can more accurately obtain the air source component according to the fan speed, the flame temperature, the wind pressure, the hot water flow and the temperature rise, and correspondingly adjust the gas flow on the gas inlet pipe 20 according to the air source component, so that the fully premixed gas device is always in a fully premixed normal combustion state.
In particular, the second temperature sensor 60 and/or the first temperature sensor is a thermocouple.
In one embodiment, referring to fig. 1 and 2, the fully premixed gas burner further includes a nozzle 110 disposed between the gas inlet pipe 20 and the blower 30. The air inlet of the nozzle 110 is communicated with the end of the gas inlet pipe 20, and the air outlet of the nozzle 110 is communicated with the air inlet of the fan 30.
In one embodiment, the adaptive flow regulator 50 is an electric flow regulator valve.
Further, the adaptive flow regulator 50 is an electrically controlled plug valve or an electrically controlled gas proportional valve.
Further, referring to fig. 1, 3 to 7, the electrically controlled plug valve includes an outer sleeve 51 and an inner sleeve 52 rotatably disposed in the outer sleeve 51. The side wall of the outer sleeve 51 is provided with a first air inlet and outlet 511, and the side wall of the inner sleeve 52 is sequentially provided with a second air inlet and outlet a, a third air inlet and outlet B and a fourth air inlet and outlet C along the rotation direction. The sizes of the openings of the second air inlet and outlet A, the third air inlet and outlet B and the fourth air inlet and outlet C are sequentially increased. When the inner sleeve 52 rotates to one of the working states, the second air inlet and outlet a, the third air inlet and outlet B or the fourth air inlet and outlet C are communicated with the first air inlet and outlet 511. Thus, when the gas source component is judged to be the reference gas, the third gas inlet and outlet B is kept communicated with the first gas inlet and outlet 511; when the gas source component is judged to be yellow flame gas or between the reference gas and the yellow flame gas, the second gas inlet/outlet A is controlled to be communicated with the first gas inlet/outlet 511; when the gas source component is the flame gas or is between the reference gas and the flame gas, the fourth gas inlet and outlet C is controlled to be communicated with the first gas inlet and outlet 511.
The sizes of the openings of the second air inlet and outlet A, the third air inlet and outlet B and the fourth air inlet and outlet C are set according to the actual air source types, each air source has a large and small air quantity range, and the sizes of the openings of the second air inlet and outlet A, the third air inlet and outlet B and the fourth air inlet and outlet C are determined according to the maximum value and the minimum value of the range.
Further, referring to fig. 1 and 3, the electrically controlled plug valve further includes a limiting rod 53 disposed on a side wall of the outer sleeve 51. The outer side wall of the inner sleeve 52 is provided with a limiting groove 521, and the limiting rod 53 is arranged in the limiting groove 521 and is in limiting fit with two opposite side walls of the limiting groove 521. Therefore, the limiting rod 53 is in limiting fit with the two opposite side walls of the limiting groove 521, so that a limiting effect is achieved, the transition rotation of the inner sleeve 52 can be avoided, when the second air inlet/outlet a is communicated with the first air inlet/outlet 511, the limiting rod 53 is in interference fit with one of the two opposite side walls of the limiting groove 521, and the inner sleeve 52 is prevented from continuing to rotate; when the fourth air inlet/outlet C communicates with the first air inlet/outlet 511, the limiting rod 53 is in interference fit with the other of the two opposite side walls of the limiting groove 521, so as to prevent the inner sleeve 52 from rotating continuously.
In one embodiment, referring to fig. 1, the fully premixed gas burner further includes a casing 120. The air control gas proportional valve 10, the gas inlet pipe 20, the fan 30, the burner 40, the adaptive flow regulator 50, the second temperature sensor 60 and the controller 70 are all disposed in the casing 120.
In one embodiment, the operation method of the fully premixed gas device comprises the following steps:
s10, acquiring the fan rotating speed of the fan 30 and the flame temperature of the burner 40;
s20, determining the gas source components actually entering the combustor 40 according to the fan rotating speed and the flame temperature;
how to determine the gas source component actually entering the combustor 40 according to the fan rotation speed and the flame temperature can be determined by establishing a corresponding database or obtaining a corresponding fitting function according to relevant experimental data through a large number of relevant experiments, and determining the gas source component according to the established database or fitting function, which is not repeated.
And S30, adjusting the gas flow on the gas inlet pipe 20 according to the gas source components.
In the working method of the fully premixed gas device, due to the adoption of the fully premixed gas device, the technical effect is brought by the fully premixed gas device, and the beneficial effect is the same as that of the fully premixed gas device, so that the description is omitted.
Further, the working method of the fully premixed gas device further comprises the following steps:
acquiring the air pressure in the smoke exhaust pipe 80, the water flow of the produced hot water and the temperature rise of the hot water converted from cold water;
and determining the gas source components actually entering the combustor 40 according to the fan rotating speed, the flame temperature, the wind pressure, the hot water flow and the temperature rise.
Therefore, the air source components actually entering the combustor 40 can be more accurately determined according to the fan rotating speed, the flame temperature, the air pressure, the hot water flow and the temperature rise. In addition, the blockage condition of the fully premixed gas device can be judged according to the flame temperature and the wind pressure. The fan rotating speed corresponds different hot water productivity, and the hot water productivity can be judged according to the fan rotating speed.
Under the same fan rotating speed and gas opening, the more the fully premixed gas device is blocked, the higher the wind pressure is, and the lower the hot water yield is; the higher the rotating speed of the fan is, the higher the wind pressure is; under the same fan rotating speed and gas opening degree, the higher the gas whitening number is, the higher the heat load is, the higher the hot water yield is, and the higher the flame temperature is.
Due to the characteristics of the air-controlled gas proportional valve 10, the gas and the air are mixed and combusted according to a substantially fixed air-fuel ratio (i.e. the reference gas state, the third air inlet and outlet B is communicated with the first air inlet and outlet 511). When the fully premixed gas device is not blocked, the corresponding rotating speed of the fan corresponds to the fixed hot water yield, flame temperature and air pressure. Whether the used gas component is the reference gas or the gas component close to various limits is judged, and the adaptive flow regulator 50 is controlled by the controller 70 to regulate the gas component to a proper position.
When the fully premixed gas device is blocked, the blocking condition can be known according to the flame temperature and the wind pressure, the rotating speed of the fan corresponds to the fixed hot water yield, the controller 70 can also judge whether the used gas component is reference gas or is close to various boundary gases according to the rotating speed of the fan, the flame temperature, the wind pressure, the water flow of the hot water and the temperature rise, and controls the adaptive flow regulator 50 to regulate to a proper position. So, combustor 40 is in the normal combustion state of full premix all the time, and air and gas ratio remain stable, and the water heater keeps burning stable, the thermal efficiency is high, can not appear because of the unstable bad phenomenon that leads to water heater thermal efficiency not high, burning abnormal sound, burning unstability, harmful flue gas discharge volume height, even burn out the water heater of air supply composition.
Further, referring to fig. 3 to 7, the specific method of step S30 includes:
when the gas source component is judged to be yellow flame gas or between the reference gas and the yellow flame gas, controlling the gas flow on the gas inlet pipe 20 to be smaller than the gas flow on the gas inlet pipe 20 when the gas source component is the reference gas;
and when the gas source component is judged to be the flame-separating gas or between the reference gas and the flame-separating gas, controlling the gas flow on the gas inlet pipe 20 to be larger than the gas flow on the gas inlet pipe 20 when the gas source component is the reference gas.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A fully premixed gas device, comprising:
the gas control combustion gas mixing device comprises a gas control combustion gas proportional valve (10), a combustion gas inlet pipe (20), a fan (30) and a combustor (40), wherein the gas inlet of the gas control combustion gas proportional valve (10) is communicated with a combustion gas source, the gas outlet of the gas control combustion gas proportional valve (10) is communicated with the combustion gas inlet pipe (20), the combustion gas inlet pipe (20) is communicated with the fan (30), and the fan (30) is used for mixing combustion gas input by the combustion gas inlet pipe (20) with external air and then conveying the mixture into the combustor (40);
the self-adaptive flow regulator (50), the self-adaptive flow regulator (50) is arranged on the gas inlet pipe (20), and the self-adaptive flow regulator (50) is used for regulating the gas flow on the gas inlet pipe (20);
the controller (70), the said controller (70) is connected with said blower (30), said adaptive flow regulator (50) electrical behavior separately;
heat exchanger (100), first temperature sensor and flow sensor, combustor (40) are used for with heat transfer for heat exchanger (100), heat exchanger (100) are used for rising temperature cold water to hot water, first temperature sensor is used for obtaining cold water and rises temperature to the temperature rise size of hot water, flow sensor is used for obtaining the discharge size of hot water, controller (70) still respectively with first temperature sensor reaches flow sensor electric connection.
2. The fully premixed gas device according to claim 1, further comprising a second temperature sensor (60), wherein the second temperature sensor (60) is disposed on the burner (40), and the second temperature sensor (60) is used for acquiring the flame temperature of the burner (40); the controller (70) is also electrically connected with the second temperature sensor (60).
3. The fully premixed gas device according to claim 2, further comprising a smoke exhaust pipe (80) and a wind pressure sensor (90), wherein the burner (40) exhausts the smoke through the smoke exhaust pipe (80), the wind pressure sensor (90) is disposed on the smoke exhaust pipe (80), and the wind pressure sensor (90) is electrically connected to the controller (70).
4. Fully premixed gas device according to claim 3, characterized in that said second temperature sensor (60) and/or said first temperature sensor is a thermocouple.
5. The fully premixed gas device according to claim 1 or 2, further comprising a nozzle (110) disposed between the gas inlet pipe (20) and the fan (30), wherein an air inlet of the nozzle (110) is communicated with an end portion of the gas inlet pipe (20), and an air outlet of the nozzle (110) is communicated with an air inlet of the fan (30).
6. Fully premixed gas device according to claim 1 or 2, characterized in that said adaptive flow regulator (50) is an electric flow regulating valve.
7. Fully premixed gas device according to claim 6, characterized in that said adaptive flow regulator (50) is an electrically controlled plug valve or an electrically controlled gas proportional valve.
8. The full premix gas device of claim 7, wherein the electric control plug valve comprises an outer sleeve (51) and an inner sleeve (52) rotatably disposed in the outer sleeve (51), a first gas inlet and outlet (511) is disposed on a side wall of the outer sleeve (51), a second gas inlet and outlet A, a third gas inlet and outlet B and a fourth gas inlet and outlet C are sequentially disposed on a side wall of the inner sleeve (52) along a rotation direction, the sizes of openings of the second gas inlet and outlet A, the third gas inlet and outlet B and the fourth gas inlet and outlet C are sequentially increased, and when the inner sleeve (52) rotates to one of working states, the second gas inlet and outlet A, the third gas inlet and outlet B or the fourth gas inlet and outlet C are communicated with the first gas inlet and outlet (511).
9. The full premix gas device according to claim 8, wherein said electric control plug valve further comprises a limiting rod (53) disposed on the side wall of said outer sleeve (51), the outer side wall of said inner sleeve (52) is provided with a limiting groove (521), said limiting rod (53) is disposed in said limiting groove (521) and is in limit fit with two side walls opposite to said limiting groove (521).
10. The fully premixed gas device according to claim 2, further comprising a casing (120), wherein the air-controlled gas proportional valve (10), the gas inlet pipe (20), the fan (30), the burner (40), the adaptive flow regulator (50), the second temperature sensor (60) and the controller (70) are all disposed in the casing (120).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111947296A (en) * | 2020-07-21 | 2020-11-17 | 华帝股份有限公司 | Fully-premixed gas water heater and control method |
| CN111947142A (en) * | 2019-05-14 | 2020-11-17 | 广东万和新电气股份有限公司 | Full-premixing gas device and working method thereof |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111947142A (en) * | 2019-05-14 | 2020-11-17 | 广东万和新电气股份有限公司 | Full-premixing gas device and working method thereof |
| CN111947296A (en) * | 2020-07-21 | 2020-11-17 | 华帝股份有限公司 | Fully-premixed gas water heater and control method |
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