CN115751401A - Combustion control method of air-blowing gas stove - Google Patents
Combustion control method of air-blowing gas stove Download PDFInfo
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- CN115751401A CN115751401A CN202211464304.4A CN202211464304A CN115751401A CN 115751401 A CN115751401 A CN 115751401A CN 202211464304 A CN202211464304 A CN 202211464304A CN 115751401 A CN115751401 A CN 115751401A
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Abstract
The invention relates to a combustion control method of a blast gas stove, wherein the blast gas stove comprises a gas mixing cavity for mixing gas and air and a fan for blowing air into the gas mixing cavity, and the method is characterized in that: the fan is configured to at least comprise two operation stages from starting to the time when the air volume reaches a preset air volume value, and the air volume increasing speed of different operation stages is gradually reduced from front to back. Compared with the prior art, the invention has the advantages that: the fan is less in the operation stage before, even if the amount of wind acceleration rate is great, and is less to the burning influence of combustor, along with the promotion gradually of the fan amount of wind, the amount of wind influences the burning of combustor more and more high, and operation stage behind slows down the amount of wind acceleration rate, can effectively alleviate the combustor and take off a fire, leave the flame, and effectively reduce the noise of fan amount of wind increase in-process.
Description
Technical Field
The invention relates to a combustion control method of a blast gas stove.
Background
The Chinese patent with the publication number of CN 216409048U discloses a gas stove, which comprises a burner, a main gas pipe, a gas valve, a second valve and a fan, wherein the second valve is connected from the main gas pipe or the gas valve, the gas stove has a normal combustion state and a violent-fire combustion state, and the gas valve is in the normal combustion state when opened and the second valve is closed; the gas valve and the second valve are in a fierce fire combustion state when being opened simultaneously, the fan is started and stopped along with the on-off of the second valve, the second valve and the fan can be started through the controller only at a fierce fire gear of the gas valve, the fierce fire combustion state is started, when the opening degree of the gas valve is adjusted in the fierce fire combustion state process, the second valve and the fan are closed after the controller receives a signal, and the gas stove is converted into a normal combustion state from the fierce fire combustion state. In this structure, the fan switches at the gas-cooker and just can open for the fierce fire combustion state, and the running state of fan only closes and opens two kinds of states, opens the back suddenly when the fan, gushes into a large amount of air in the mixed gas room of combustor in the twinkling of an eye suddenly, and a large amount of air can dilute the indoor gas proportion of mixed gas rapidly, causes the air in the twinkling of an eye surplus easily, causes the influence to the combustion state of combustor, and the combustor flame of combustor still probably blows out even.
The chinese patent publication No. CN 203431941U discloses an air supply control device for a gas stove, which comprises a gear switch for adjusting the gear of an air valve and a microprocessor, wherein the microprocessor is used for receiving a gear signal sent by the gear switch, where the air valve is located, and sending a fan air volume control command to a fan controller; the number of preset gears of the fan is consistent with that of the air valve gears, and the fan controller controls and adjusts the fan to supply air at the corresponding preset gears prestored in the microprocessor after receiving a fan controller signal. In the structure, because the preset gears of the fan are consistent with the gear number of the air valve, after the fuel gas gears are adjusted, the microprocessor pre-stores corresponding gear information according to the fan in the microprocessor, and correspondingly adjusts the air inlet quantity of the fan, so that the fuel gas and the control proportion obtain the optimal proportion value, and the generated flame is always at the optimal combustion temperature. However, in the structure, although the air volume of the fan is provided with a plurality of gears, when the gear switch is directly switched off to a big fire gear, the air volume control mode of the fan is also directly increased to the big air volume gear corresponding to the big fire gear from zero jump, and in the air volume control mode, the air volume is excessively increased at the moment, so that flameout is easily caused; and the instantaneous air volume is accelerated too fast to generate larger noise.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a combustion control method of a blast gas stove, which ensures stable combustion, no flame failure and no flame extinction in the process of increasing the air quantity of a fan in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a combustion control method of a blast gas range including a gas mixture chamber for mixing gas and air, and a fan for blowing air into the gas mixture chamber, characterized in that: the fan is configured to at least comprise two operation stages from starting to the time when the air volume reaches a preset air volume value, and the air volume speed increasing of different operation stages is gradually reduced from front to back. At the fan beginning operation stage, the fan amount of wind is less, even if the acceleration rate of the amount of wind is great, and is less to the burning influence of combustor, along with the promotion gradually of the fan amount of wind, the amount of wind influences the burning of combustor more and more high, consequently at subsequent operation stage, slows down the acceleration rate of the amount of wind, can effectively alleviate the combustor and take off a fire, leave the flame, and follow-up operation stage simultaneously, the acceleration rate of the amount of wind is less, can effectively reduce the noise that fan amount of wind acceleration rate in-process produced.
The technical scheme is particularly suitable for the gas stove with the inlet area of the air blowing channel larger than the outlet area, even if the inlet area of the air blowing channel is larger than the outlet area, because the air quantity acceleration stage of the fan is divided into at least two operation stages, when the air quantity is smaller, the air quantity acceleration is large, along with the increase of the air quantity, the air quantity acceleration is gradually reduced, and the noise generated in the air quantity acceleration process of the fan can be effectively reduced.
Preferably, the fan is configured to start until the air volume reaches a predetermined air volume value, and comprises a first operation stage and a second operation stage, wherein the first operation stage operates for n seconds, the second operation stage operates for m seconds, and the value of n + m is greater than or equal to 20 seconds. The running state of a burner in the blast gas stove generally comprises a cold state and a hot state, when the burner does not work or works for a preset time less than n seconds, the running state of the burner is the cold state, and when the working of the burner lasts for a preset time more than or equal to n + m seconds, the running state of the burner is the hot state; when the fan is in a first operation stage, the combustor is in a cold state; and when the fan is in the second operation stage, the combustor is converted from a cold state to a hot state. Because the combustion is often unstable when the combustor is in a cold state, the fan operates in the first operation stage, the air volume is small, and even if the air volume is greatly increased, the influence on the combustion of the combustor is still small; when the combustor is changed to the hot attitude by cold attitude gradually, the combustion stability of combustor promotes gradually, and consequently the fan is great at the second operation stage, and the amount of wind is great, and is great to combustion stability influence, consequently in this stage, the acceleration rate of the amount of wind slows down, can guarantee the combustion stability of combustor. The value of n + m is more than or equal to 20 seconds, and the time can reach the time required from the start of combustion to the stability of combustion in different regions and pressures due to different gas components. In addition, in the actual operation process, when n is less than m, the combustion control is more stable and reliable. The value of n is preferably less than or equal to 5 seconds, the air volume of the fan is directly increased from zero to 30-65% of the maximum air volume in the first second in the first operation stage, and the air volume is maintained at 30-65% of the maximum air volume in the rest n-1 seconds. And in the second operation stage of the fan, the air volume of the fan is increased to a preset air volume value from the air volume value at the end of the first operation stage according to a linear increasing mode or a stepped increasing mode. The preset air volume value can be an air volume gear corresponding to a gas gear of the gas gear adjusting valve, and for the purposes of convenient and simple control, the preset air volume value is the maximum air volume value of the fan.
The blast gas stove further comprises a gas pipeline communicated with the gas mixing cavity and a gas gear adjusting valve used for adjusting gas quantity in the gas pipeline, fire gears of the blast gas stove comprise a big fire gear and a small fire gear, when the fire gears of the blast gas stove are switched from the big fire gear to the small fire gear, the fan is immediately closed, the gas gear adjusting valve delays for a first preset time and then is switched to the gas quantity adjusting gear corresponding to the small fire gear, and tempering can be effectively prevented. At least one gear of the gas gear regulating valve corresponding to the big fire gear, such as the big fire gear, or 7, 8, 9 and 10 gears; the gas gear regulating valve corresponding to the small fire gear also has at least one gear, such as the small fire gear, or 1 gear, 2 gear, 3 gear, 4 gear, 5 gear and 6 gear.
When the firepower gear of the burner is switched from the small fire gear to the large fire gear and the duration time is longer than the second preset time, the fan is started, so that the fan can be prevented from being started by mistake.
Preferably, the first preset time is 1 s-5 s; the second preset time is 5-30 s.
After the gas gear regulating valve is closed, the fan is configured to be closed after the current operation state is maintained for a third preset time, the third preset time is 1-5 s, and the fan is closed after the third preset time is maintained, so that gas can be purged, and the safety of the gas stove during next starting up and use is ensured.
In order to facilitate a user to know the working state of the fan at any time, the air blowing gas stove further comprises a prompting module which is configured to be started when the fan is abnormal.
For the convenience of control, the gas-fired control system further comprises a control part, wherein the control part is configured to close the gas gear regulating valve when the prompting module is opened for T2, or the control part is configured to switch the fire gear of the air-blowing gas stove to a small fire gear when the prompting module is opened.
Compared with the prior art, the invention has the advantages that: through being configured into the fan to reach from opening to the fan amount of wind and move according to two at least stages between the predetermined amount of wind value, and the amount of wind acceleration rate in the different operation stages reduces from the front to the back gradually, the fan is less in the operation stage in front, even if the amount of wind acceleration rate is great, it is less to the burning influence of combustor, along with the promotion gradually of the fan amount of wind, the amount of wind influences the burning of combustor more and more high, operation stage behind, slow down the amount of wind acceleration rate, can effectively alleviate the combustor and take off a fire, leave the flame, and effectively reduce the noise of fan amount of wind increase in-process.
Drawings
Fig. 1 is a block diagram showing a combustion control system of a gas range according to an embodiment of the present invention.
Fig. 2 is a combustion control flowchart of the gas range according to the embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The combustion control system of the gas stove shown in fig. 1 comprises a burner 1, a gas mixing cavity 2 arranged in the burner 1, a gas pipeline 3 communicated with the gas mixing cavity 2, a blast channel 4 communicated with the gas mixing cavity 2, a gas gear regulating valve 5 used for regulating the gas amount in the gas pipeline, a fan 6 used for blasting air into the gas mixing cavity 2, a control part 7 and a prompt mode 8 which control the working states of the gas gear regulating valve and the fan, wherein the gas gear regulating valve 5, the fan 6 and the prompt module 8 are all in communication connection with the control part 7, the inlet area of the blast channel 4 is larger than the outlet area, and the fan 6 is configured to be opened until the air amount reaches a preset air amount value, at least comprises two operation stages, and the air amount speed increasing rate of different operation stages from front to back is gradually reduced.
In this embodiment, the predetermined air flow value is the maximum air flow value of the fan; the fan is configured to be started to a maximum air volume value and comprises a first operation stage and a second operation stage, wherein the first operation stage operates for n seconds, the second operation stage operates for m seconds, and the value of n + m is more than or equal to 20 seconds; after the first operation stage is finished, the air volume of the fan is 50% of the maximum air volume of the fan, after the second operation stage is finished, the air volume of the fan is the maximum air volume of the fan, the value of n is preferably 5 seconds, the value of m is preferably 15 seconds, the air volume of the fan is directly increased from zero to 30% -65% of the maximum air volume in the first second, the air volume is preferably 50% in the first operation stage, and the air volume is maintained at 50% of the maximum air volume in the remaining n-1 second; and in the second operation stage, the air volume of the fan is gradually increased from 50% of the maximum air volume to the maximum air volume value according to a linear increasing mode, and the slope of the linear increasing is preferably 0.5.
The running state of the combustor comprises a cold state and a hot state, when the working duration of the combustor is less than n seconds, the running state of the combustor is the cold state, and when the working duration of the combustor is more than or equal to n + m seconds, the running state of the combustor is the hot state; when the fan is in a first operation stage, the combustor is in a cold state; and when the fan is in the second operation stage, the combustor is converted from a cold state to a hot state.
The firepower gears of the burner comprise a large fire gear and a small fire gear, the gear of the gas quantity adjusting gear corresponding to the large fire gear can be one or multiple, and the gear of the gas quantity adjusting gear corresponding to the small fire gear can be one or multiple. In this embodiment, the gears of the gas quantity adjusting gear corresponding to the small fire gear include 1 gear, 2 gear, 3 gear, 4 gear, 5 gear and 6 gear, and the gears of the gas quantity adjusting gear corresponding to the large fire gear include 7 gear, 8 gear, 9 gear and 10 gear; the gas gear regulating valve is provided with gas quantity regulating gears which correspond to the flame gear quantity of the burner one by one; when the firepower gear of the burner is switched from a big fire gear to a small fire gear, the fan is immediately closed, the gas gear regulating valve delays for a first preset time and then regulates the firepower gear to a gas quantity regulating gear corresponding to the switched firepower gear, and the preferred value of the first preset time is 2 seconds.
When the firepower gear of the burner is switched from the small fire gear to the large fire gear and the duration is longer than the second preset time, or the burner is directly switched from the closed state to the large fire gear and the duration is longer than the second preset time, the second preset time is preferably 10s, the fan is started, and the starting control mode is as described above, namely the fan runs for n seconds according to the first running stage after being started, the air volume of the fan is maintained at 50% of the maximum air volume after the first running stage is finished, then the fan runs for m seconds according to the second running stage, the air volume of the fan is maintained at the maximum air volume after the second running stage is finished, and the air volume speed increasing rate of the first running stage is larger than the speed increasing rate of the second running stage. In addition, the prompting module is configured to turn on when the burner is switched from an off state to a big fire range or when the burner is switched from a small fire range to a big fire range. After the gas gear regulating valve is closed, the fan is configured to be closed after maintaining the current operation state for a third preset time, and the third preset time is preferably 2s.
The prompting module 8 is configured to turn on when the fan is abnormal. The control portion 7 is configured to close the gas gear adjusting valve when the opening time of the cue module 8 reaches T2, T2 being equal to 5 seconds, or the control portion 7 is configured to switch the fire gear of the blast gas range to a small fire gear when the cue module 8 is opened.
When the air-blast gas stove in the embodiment is used, a specific use method is shown in fig. 2. When the blast gas stove is powered on, self-checking is firstly carried out, the blast gas stove enters a standby state after the self-checking is successful, the self-checking is unsuccessful, and the prompting module prompts an error and is directly shut down; in a standby state, if the air-blowing gas stove is ignited, the gas gear regulating valve is opened, whether the firepower gear of the air-blowing gas stove is a big fire gear is judged at the moment, if so, the duration of the big fire gear exceeds 5-30 seconds, preferably 10 seconds, the fan is opened, otherwise, the fan is not powered on, the fan is operated according to a first operation stage after being opened, the air volume of the fan is maintained at 40% of the maximum air volume after the operation of the first operation stage is finished, then the fan is operated according to a second operation stage for 15 seconds, the air volume of the fan is maintained at the maximum air volume after the operation of the second operation stage is finished, and the air volume acceleration of the first operation stage is larger than the air volume acceleration of the second operation stage at the moment; when the fan runs, the rotating speed of the fan is detected in real time, if the fan is detected to run abnormally, the prompting module prompts switching of small fire, if the firepower gear is switched to the small fire gear, the gas gear regulating valve is maintained at a gas quantity regulating gear corresponding to the small fire gear, and if the firepower gear is not switched to the small fire gear, the gas source is directly closed after 15 seconds, and the fan is shut down; if the running process of the fan is not abnormal, the fan is always kept in a power-on maintaining state, a firepower gear is detected in real time, when the firepower gear of the blast gas stove is switched from a big fire gear to a small fire gear, and when the fan is directly closed, the gas gear regulating valve is switched to a gas quantity regulating gear corresponding to the small fire gear after delaying for 1-5 seconds, preferably 3 seconds; if the firepower gear is 0, namely the user shuts down, the air source is directly closed, and the fan is closed after delaying 1-5 seconds, preferably 3 seconds.
Claims (13)
1. A combustion control method of a blast gas range including a gas mixture chamber for mixing gas and air, and a fan for blowing air into the gas mixture chamber, characterized in that: the fan is configured to at least comprise two operation stages from opening to when the air volume reaches a preset air volume value, and the air volume acceleration of different operation stages from front to back is gradually reduced.
2. The combustion control method of a blast gas stove according to claim 1, characterized in that: the air blowing gas stove further comprises an air blowing channel, an air outlet of the fan is communicated with an inlet of the air blowing channel, an outlet of the air blowing channel is communicated with the gas mixing cavity, and the area of the inlet of the air blowing channel is larger than that of the outlet.
3. The combustion control method of a blast gas stove according to claim 1, characterized in that: the fan is configured to be started until the air volume reaches a preset air volume value, and comprises a first operation stage and a second operation stage, wherein the first operation stage is operated for n seconds, the second operation stage is operated for m seconds, and the value of n + m is greater than or equal to 20 seconds.
4. The combustion control method of a blast gas stove according to claim 3, characterized in that: and n is less than m.
5. The combustion control method of a blast gas stove according to claim 1, characterized in that: the fan is configured to comprise a first operation stage and a second operation stage from starting to when the air volume reaches a preset air volume value, and after the first operation stage is finished, the air volume of the fan is 30% -65% of the preset air volume value.
6. The combustion control method of a blast gas stove according to claim 1, characterized in that: the fan is configured to be started until the air volume reaches a preset air volume value, and comprises a first operation stage and a second operation stage, wherein the air volume of the fan is increased to the preset air volume value from the air volume value at the end of the first operation stage in a linear increasing mode or a step increasing mode in the second operation stage.
7. The combustion control method of a blast gas stove according to claim 1, characterized in that: the blast gas stove further comprises a gas pipeline communicated with the gas mixing cavity and a gas gear adjusting valve used for adjusting gas quantity in the gas pipeline, the firepower gear of the blast gas stove comprises a big fire gear and a small fire gear, when the firepower gear of the blast gas stove is switched from the big fire gear to the small fire gear, the fan is immediately closed, and the gas gear adjusting valve is switched to the gas quantity adjusting gear corresponding to the small fire gear after delaying for a first preset time.
8. The combustion control method of a blast gas stove according to claim 7, characterized in that: and when the firepower gear of the air-blowing gas stove is switched from the small fire gear to the large fire gear and the duration time is longer than a second preset time, the fan is started.
9. The combustion control method of a blast gas stove according to claim 7, characterized in that: the first preset time is 1-5 s.
10. The combustion control method of a blast gas stove according to claim 7, characterized in that: the second preset time is 5-30 s.
11. The combustion control method of a blast gas stove according to claim 7, characterized in that: and after the gas gear regulating valve is closed, the fan is closed after delaying a third preset time, wherein the third preset time is 1-5 s.
12. The combustion control method of a blast gas stove according to claim 7, characterized in that: the blast gas stove further comprises a prompting module configured to be turned on when the fan is abnormal.
13. The combustion control method of a blast gas stove according to claim 12, characterized in that: the air-blowing gas stove further comprises a control portion, wherein the control portion is configured to close the gas gear regulating valve when the prompting module is opened for a time T2, or the control portion is configured to switch the firepower gear of the air-blowing gas stove to a small firepower gear when the prompting module is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211464304.4A CN115751401A (en) | 2022-11-22 | 2022-11-22 | Combustion control method of air-blowing gas stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211464304.4A CN115751401A (en) | 2022-11-22 | 2022-11-22 | Combustion control method of air-blowing gas stove |
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| CN115751401A true CN115751401A (en) | 2023-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211464304.4A Pending CN115751401A (en) | 2022-11-22 | 2022-11-22 | Combustion control method of air-blowing gas stove |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118564922A (en) * | 2024-08-01 | 2024-08-30 | 杭州老板电器股份有限公司 | Kitchen range burner, control method thereof and gas kitchen range |
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2022
- 2022-11-22 CN CN202211464304.4A patent/CN115751401A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118564922A (en) * | 2024-08-01 | 2024-08-30 | 杭州老板电器股份有限公司 | Kitchen range burner, control method thereof and gas kitchen range |
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