CN216047853U - A gas distribution system applied to catalytic gas stoves - Google Patents
A gas distribution system applied to catalytic gas stoves Download PDFInfo
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- CN216047853U CN216047853U CN202122570086.XU CN202122570086U CN216047853U CN 216047853 U CN216047853 U CN 216047853U CN 202122570086 U CN202122570086 U CN 202122570086U CN 216047853 U CN216047853 U CN 216047853U
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- gas
- air
- catalytic
- gas stove
- controller
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- 230000003197 catalytic effect Effects 0.000 title claims abstract description 60
- 238000007084 catalytic combustion reaction Methods 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 92
- 239000002737 fuel gas Substances 0.000 description 17
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 12
- 238000002485 combustion reaction Methods 0.000 description 8
- 239000003345 natural gas Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000010411 cooking Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Regulation And Control Of Combustion (AREA)
Abstract
The utility model discloses a gas distribution system applied to a catalytic gas stove, which comprises a controller, a gas passage and an air passage, wherein the gas passage and the air passage are both connected to another catalytic gas stove; when gas enters, the controller outputs pulse signals to the electromagnetic valve to control the electromagnetic valve to open or close. The gas is distributed in a pulse gas inlet mode, and when the air quantity is far greater than the gas quantity and the gas cannot spontaneously combust, the relatively high gas density at the gas inlet moment is ensured, so that the catalytic combustion reaction of the gas can be smoothly carried out.
Description
Technical Field
The utility model relates to the technical field of catalytic gas stoves, in particular to a gas distribution system applied to a catalytic gas stove.
Background
A gas cooking stove is a device widely used for cooking and water heaters for generating heat. The traditional gas stove generates heat to heat a boiler or a cooker in a flame combustion mode, the flame temperature is high, pollutants such as NOx, CO and the like are easily generated in the combustion process to pollute the air environment, and meanwhile, the conditions of low heat efficiency and the like caused by insufficient combustion are easily caused. In recent years, in order to improve the combustion efficiency of gas and reduce the generation of pollutants, a catalytic gas stove is produced, through reasonable catalyst selection and structural design, the gas is subjected to catalytic combustion in the stove, the combustion process is flameless, the heat efficiency is high, and the catalytic gas stove has wide application prospects.
At present, the air inlet part of a catalytic gas stove still takes the air inlet mode of the traditional gas stove as a main part, namely, when the catalytic gas stove works, gas and air are continuously supplied, but because the combustion temperature of the catalytic gas stove is very low (generally not more than 500 ℃), the too large gas inlet amount easily causes the overhigh temperature of the catalytic gas stove or insufficient gas combustion, the excessive air is introduced to easily cause the overlow density of the gas to cause the termination of reaction, the gas cannot be spontaneously combusted, so that the working of the catalytic gas stove is increased with a lot of instability, and the use of the catalytic gas stove is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a gas distribution system applied to a catalytic gas stove, which has the advantages that gas is distributed in a pulse gas inlet mode, and when the air quantity is far larger than the gas quantity, the larger gas density at the gas inlet moment is ensured, so that the catalytic combustion reaction of the gas can be smoothly carried out.
The utility model provides a gas distribution system applied to a catalytic gas stove, which comprises a controller, a gas passage and an air passage, wherein the gas passage and the air passage are both connected to another catalytic gas stove; when gas enters, the controller outputs pulse signals to the electromagnetic valve to control the electromagnetic valve to open or close.
The utility model is further provided with an air filter on the air passage, and the air filter is arranged on one side of the air inlet end of the fan.
The utility model is further provided that the pulse signal for controlling the solenoid valve is a rectangular pulse signal, the width of the pulse signal is between 30 seconds and 10 minutes, and the pulse interval is between 30 seconds and 30 minutes.
The utility model is further arranged such that, when air is supplied to the catalytic gas burner, the average air-to-gas volume ratio is 2-10 times the air-to-gas volume ratio when the gas is fully combusted.
The utility model is further arranged that when the catalytic gas stove is fed with air, the volume ratio of the air to the fuel gas is 2-5 times of the volume ratio of the air to the fuel gas when the fuel gas is fully combusted.
The utility model is further arranged that when the electromagnetic valve is opened, the instantaneous air intake volume ratio of the air to the fuel gas is not less than the air to fuel gas volume ratio when the fuel gas is fully combusted.
The utility model is further configured to further comprise a temperature sensor arranged in the catalytic gas stove, the temperature sensor detects the real-time temperature T1 of the catalytic gas stove and outputs the real-time temperature T1 to the controller, the controller compares the real-time temperature T1 with a target temperature T0 preset in the controller, and when T0< T1, the electromagnetic valve is controlled to be closed.
In conclusion, the beneficial effects of the utility model are as follows:
1. the gas is distributed in a pulse gas inlet mode, when the air quantity is far greater than the gas quantity and the gas cannot spontaneously combust, the larger gas density at the gas inlet time is ensured, so that the catalytic combustion reaction of the gas can be smoothly carried out, the volume ratio of the air to the gas can be increased, the catalytic gas stove can be favorably kept at a lower temperature, and the generation of nitrogen oxides in the combustion process is reduced;
2. compared with continuous air intake, the pulse air intake is adopted, and the higher gas density can be achieved during catalytic combustion under the same output power of the catalytic gas stove, so that the catalytic combustion reaction is facilitated;
3. by measuring the real-time temperature T1 of the catalytic gas stove and comparing with the heat load (target temperature T0), the gas input can be stopped when the temperature reaches the standard, which is beneficial to accurately controlling the temperature of the catalytic gas stove.
Drawings
FIG. 1 is a schematic diagram of the overall configuration of the gas distribution system of the present invention as applied to a catalytic gas range;
FIG. 2 is a schematic of air flow versus natural gas flow during operation of a catalytic gas stove in an embodiment of the present invention;
FIG. 3 is a graph of target temperature change during operation of a catalytic gas stove in an embodiment of the present invention;
fig. 4 is a graph of actual temperature change during operation of a catalytic gas stove in an embodiment of the present invention.
In the figure, 1, a gas passage; 2. an air passage; 3. an electromagnetic valve; 4. a fan; 5. an air filter; 6. and a controller.
Detailed Description
The following detailed description of embodiments of the utility model refers to the accompanying drawings.
Example (b): referring to fig. 1, an air distribution system applied to a catalytic gas stove comprises a controller 6, a gas passage 1 and an air passage 2, wherein the gas passage 1 and the air passage 2 are both connected to another catalytic gas stove, the gas passage 1 is provided with an electromagnetic valve 3, the air passage 2 is provided with a fan 4, and the electromagnetic valve 3 and the fan 4 are both connected to the controller 6 and controlled by the controller 6; when gas is fed, the controller 6 outputs a pulse signal to the electromagnetic valve 3 to control the electromagnetic valve 3 to be opened or closed.
An air filter 5 is further arranged on the air passage 2, the air filter 5 is arranged on one side of the air inlet end of the fan 4, and the air filter 5 is used for filtering impurities in the air.
The pulse signal for controlling the electromagnetic valve 3 is a rectangular pulse signal, the width of the pulse signal is between 30 seconds and 10 minutes, and the pulse interval is between 30 seconds and 30 minutes.
When the catalytic gas stove is fed with air, the average volume ratio of air to fuel gas is 2-10 times of the volume ratio of air to fuel gas when the fuel gas is fully combusted, namely, if the required volume ratio of air to fuel gas is N when a certain fuel gas is fully combusted, then when the catalytic gas stove is fed with air, the volume ratio of air to fuel gas is between 2N and 10N, and it should be noted that the volume ratio should include the average volume ratio of at least one complete pulse period.
In other embodiments of the present invention, the volume ratio may be further optimized to 2-5.
When the electromagnetic valve 3 is opened, the instantaneous air inlet volume ratio of the air to the fuel gas is not less than the air to fuel gas volume ratio when the fuel gas is fully combusted, so that the fuel gas can be fully combusted in the catalytic fuel gas stove.
The gas stove further comprises a temperature sensor arranged in the catalytic gas stove, the temperature sensor detects the real-time temperature T1 of the catalytic gas stove and outputs the real-time temperature T1 to the controller 6, the controller 6 compares the real-time temperature T1 with a target temperature T0 preset in the controller 6, and when T0 is smaller than T1, the electromagnetic valve 3 is controlled to be closed. By measuring the real-time temperature T1 of the catalytic gas stove and comparing with the heat load (target temperature T0), the gas input can be stopped when the temperature reaches the standard, which is beneficial to accurately controlling the temperature of the catalytic gas stove.
In addition, the opening degree of the electromagnetic valve 3 can be controlled by the current or voltage of the control end, therefore, the controller 6 can control the opening degree of the electromagnetic valve 3 while controlling the opening and closing of the electromagnetic valve 3, when gas enters, the opening degree of the electromagnetic valve 3 can be controlled by the value of (T0-T1) or the value of (T0-T1)/T0, when the real-time temperature T1 of the catalytic gas stove is far away from the target temperature T0, a larger gas inlet amount is adopted, and when the catalytic gas stove is close to reach the target temperature T0, the gas inlet amount is reduced, so that the temperature control of the catalytic gas stove is more accurate.
Taking a catalytic gas stove using natural gas as an example, the maximum heat output power of the catalytic gas stove is 2.7kW, under a stable working condition, the catalytic gas stove needs an average flow of 4L/min when reaching a rated output power, and air intake is performed with an air-to-gas volume ratio of 20, that is, the average flow of air intake is 80L/min. In the embodiment, natural gas is fed by adopting a pulse feeding mode with the pulse width of 5 minutes and the pulse interval of 5 minutes, the average natural gas feeding amount at the feeding moment is 8L/min, the target temperature T0 is 350 ℃, the actual output thermal power of the catalytic gas stove is about 2kW, and the energy use efficiency is 74%. FIG. 2 is a schematic of air flow versus natural gas flow during operation of a catalytic gas stove, where line a is air flow and line b is natural gas flow; FIG. 3 is a graph of target temperature change during operation of a catalytic gas stove; fig. 4 is a graph showing the actual temperature change during the operation of the catalytic gas range, and it can be found that the actual temperature matches the target temperature well.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122570086.XU CN216047853U (en) | 2021-10-25 | 2021-10-25 | A gas distribution system applied to catalytic gas stoves |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122570086.XU CN216047853U (en) | 2021-10-25 | 2021-10-25 | A gas distribution system applied to catalytic gas stoves |
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| Publication Number | Publication Date |
|---|---|
| CN216047853U true CN216047853U (en) | 2022-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122570086.XU Active CN216047853U (en) | 2021-10-25 | 2021-10-25 | A gas distribution system applied to catalytic gas stoves |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847625A (en) * | 2021-10-25 | 2021-12-28 | 常州大学 | Gas distribution system and method applied to catalytic gas stove |
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2021
- 2021-10-25 CN CN202122570086.XU patent/CN216047853U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847625A (en) * | 2021-10-25 | 2021-12-28 | 常州大学 | Gas distribution system and method applied to catalytic gas stove |
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20240125 Address after: 230000 floor 1, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee after: Dragon totem Technology (Hefei) Co.,Ltd. Country or region after: China Address before: 213164 21 Gehu Middle Road, HUTANG Town, Wujin District, Changzhou City, Jiangsu Province Patentee before: CHANGZHOU University Country or region before: China |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240228 Address after: 150000, Group 12, Heping Street Second Committee, Acheng District, Harbin City, Heilongjiang Province Patentee after: Li Guirong Country or region after: China Patentee after: Liu Yingying Address before: 230000 floor 1, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee before: Dragon totem Technology (Hefei) Co.,Ltd. Country or region before: China |
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| TR01 | Transfer of patent right | ||
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Effective date of registration: 20240318 Address after: Building 3-1-809-1, No.1 Haitai Huake Third Road, Huayuan Industrial Zone, Binhai New Area, Tianjin, 300384 Patentee after: TIANJIN CYNDEER HIGH TECHNOLOGY LTD. Country or region after: China Address before: 150000, Group 12, Heping Street Second Committee, Acheng District, Harbin City, Heilongjiang Province Patentee before: Li Guirong Country or region before: China Patentee before: Liu Yingying |