CN111322614A - Front premixing burner for commercial gas stove - Google Patents
Front premixing burner for commercial gas stove Download PDFInfo
- Publication number
- CN111322614A CN111322614A CN202010248241.3A CN202010248241A CN111322614A CN 111322614 A CN111322614 A CN 111322614A CN 202010248241 A CN202010248241 A CN 202010248241A CN 111322614 A CN111322614 A CN 111322614A
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- China
- Prior art keywords
- gas
- pressure
- gas stove
- commercial
- premixing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
- F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/60—Devices for simultaneous control of gas and combustion air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
Abstract
The invention discloses a front premixing burner for a commercial gas stove, which comprises a burner, an ignition needle, an ion needle, a gas valve, a PWM (pulse-width modulation) fan, a Venturi premixer, a zero-pressure main pipe gas electromagnetic valve, a pressure stabilizing valve and a commercial gas stove front premixing controller. The invention adopts the pre-mixing technology to completely mix the fuel and the air before entering the nozzle of the furnace end combustion chamber, and fully stir and mix the gas molecules, so that the mixing is more complete, the combustion speed is not limited by physical conditions such as gas diffusion speed and the like, the combustion speed is higher, the efficiency is higher, and the harmful CO emission in the flue gas is reduced. Meanwhile, an automatic premixing technology is applied, so that the mixing is more accurate. The work safety is ensured, and the phenomena of fire dropping, flame leaving, tempering and the like are avoided.
Description
Technical Field
The invention relates to the field of commercial gas burners, in particular to a front premix burner for a commercial gas stove.
Background
With the continuous development of society, the requirements of people on improving living environment are gradually increased. Clean fuels such as natural gas, liquefied gas and the like have the characteristics of high combustion efficiency and clean combustion, are accepted by people and are more and more emphasized in society, and the application is more and more extensive. And as more and more gas-using projects are carried out, the gas application industry in China is in an important development period. The fuel gas consumption in China is huge, so that the demand is increased year by year, the annual average speed is increased by 10% -13%, and a certain gap is generated in the aspect of supply in the fuel gas industry. Meanwhile, in order to improve the environment and deal with the problems of climate warming and the like, energy-saving and environment-friendly gas burners with structures such as diffusion burners, semi-premixed burners and the like are successively researched, the use requirements in the commercial field are gradually met, a brand new mode is opened from the design, research and development of the gas burners, and a new era of safety, energy conservation and environment protection is stepped into. In order to meet the eating habits of Chinese people, the commercial gas combustion widely applied in various large dining places such as schools, hotels, and the like must have the characteristics of high heat load, high heat intensity of pot bottoms, convenience in use and the like. The majority of the existing commercial gas gasification in China adopts a diffusion or semi-premix combustion mode, the flow field design is not good, and the combustion efficiency and the heat transfer efficiency are not high; the high-power fan is used for providing a power source, so that serious noise pollution is caused. The main factors make the commercial gas combustion have the following characteristics of low efficiency, large fuel consumption, environmental pollution, large noise and serious harm to the physical, mental and health of operators. Therefore, improvement of the thermal efficiency of combustion is urgent, and it is very necessary to perform comprehensive performance of energy saving, environmental protection, safety, and the like of the commercial gas combustion appliance.
Disclosure of Invention
The present invention aims to provide a front premix burner for a commercial gas range to solve the problems of the prior art gas burners.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a front premix burner for a commercial gas stove characterized by: the control valve group consists of a pressure stabilizing valve and a zero-pressure main gas electromagnetic valve, wherein the inlet end of the pressure stabilizing valve is connected with a gas inlet pipeline of gas, the outlet end of the pressure stabilizing valve is connected with the inlet end of the zero-pressure main gas electromagnetic valve through a pipeline, the outlet end of the zero-pressure main gas electromagnetic valve is connected with the inlet end of the PWM fan through a pipeline, the outlet end of the PWM fan is connected with a gas valve at the inlet end of the furnace end through a pipeline, the inlet end of the Venturi premixer leads to the external environment, the outlet end of the Venturi premixer is communicated to the interior of the PWM fan, so that the gas enters the PWM fan through the pressure stabilizing valve and the zero-pressure main gas electromagnetic valve, when the gas is sent out from the PWM fan, the inlet end and the outlet end of the Venturi premixer form pressure difference, and external ambient air enters the PWM fan to, then the mixture is sent to a furnace end by a PWM fan;
the pre-mixing controller before the commercial gas stove controls the PWM fan to work based on digital signals, and controls the gas valve and the gas electromagnetic valve of the zero-pressure main pipe to be opened and closed.
The front premixing burner for the commercial gas stove is characterized in that: an ignition needle and an ion needle are arranged in the burner, the ignition needle and the ion needle are respectively and electrically connected with a front premixing controller of the commercial gas stove, and the front premixing controller of the commercial gas stove collects state signals of the ignition needle and the ion needle.
The front premixing burner for the commercial gas stove is characterized in that: the premixing controller is arranged in front of the commercial gas stove and is provided with a display, and meanwhile, a remote transmission interface is integrated in the premixing controller in front of the commercial gas stove, so that remote transmission and detection of data are realized.
The front premixing burner for the commercial gas stove is characterized in that: when the PWM fan generates suction pressure, the gas electromagnetic valve of the zero-pressure main pipe always keeps the offset pressure at zero point and compensates the pressure fluctuation in the gas supply pipe network.
The front premixing burner for the commercial gas stove is characterized in that: the PWM fan rotating speed is regulated and controlled through the commercial gas stove front premixing controller, so that different pressure differences are formed at an inlet and an outlet of the Venturi premixing device, the air quantity sucked by the PWM fan is controlled to meet the gas and air ratio under different heat loads, and the combustion state is stable.
When the inlet pressure fluctuates, the pressure stabilizing device in the pressure stabilizing valve generates corresponding action, the opening degree is adjusted, the outlet pressure is kept stable, and the combustion appliance is always in a good working state.
According to the invention, the controlled signal of the PWM fan is in a digital form, digital-to-analog conversion is not needed, the control module is simplified to realize the control of the rotating speed of the fan, different pressure differences can be formed at the inlet and the outlet of the Venturi premixer after the rotating speed of the PWM fan is accurately regulated, and then the air quantity sucked by the fan is controlled to meet the gas-air ratio under different heat loads, so that the stability of the combustion state is realized.
In the invention, fuel and air are stably ignited and combusted in the furnace end according to the required air quantity, proportion and speed, the inner ring of the furnace end can be provided with the guide plate annularly around the inner side of the furnace end to cool the outer shell of the furnace end, and the service life of the furnace end is prolonged.
In the invention, the ignition needle and the ion needle are electrically connected with the commercial gas stove front premixing controller, and the commercial gas stove front premixing controller performs ignition and flame state detection according to the electric signals of the ignition needle and the ion needle.
In the invention, the display connected with the premixing controller in front of the commercial gas stove can display various parameters such as the running state of the burner, fault display and the like, and the commercial stove can be visually observed by operators; the premixing controller in front of the commercial gas stove is provided with a remote transmission interface, and remote transmission and detection of operation data can be realized through the Internet of things.
Compared with the prior art, the invention has the advantages that:
1. according to the invention, the fuel and the air are completely mixed before entering the nozzle of the furnace end combustion chamber in a pre-premixing mode, and gas molecules are fully stirred, dispersed and mixed, so that the mixing is more complete, the combustion speed is not limited by physical conditions such as gas diffusion speed and the like, the combustion speed is higher, the combustion heat intensity is high, and the flame is short; in production application, flame heat loss is reduced by reducing the fire hanging height of a hearth, and heat transfer efficiency is increased; because the combustion is complete and the combustion temperature is high, the contents of CO and NOX in the combustion products are low, and the method is safe and environment-friendly. The invention uses the automatic premixing technology to ensure that the mixing is accurate, namely, the working safety is ensured, and the phenomena of fire shedding, flame leaving, tempering and the like are not generated
2. In the field of commercial gas combustion appliances, a PWM fan is used at first to replace a conventional air volume adjusting device, so that the throttling loss caused by air adjustment is avoided; the efficiency is high, the power factor is high, and the power saving effect of reducing the power of the fan is obvious; the structure is simple, and the volume of the fan is greatly reduced; the fan has wide adjusting range and can be adapted to various gas stoves and different heat load requirements.
3. Compare commercial gas kitchen range of the same kind, the venturi blender of preceding premix combustor utilizes venturi effect, provides the gas and the air mixture of the best proportion in for the furnace end control in the combustion process, and simple structure, and equipment volume reduces by a wide margin, very big increase the application range of preceding premix combustor, also easy to assemble.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged view of the burner structure at a in fig. 1.
FIG. 3 is an enlarged view of the PWM blower and Venturi premixer at B in FIG. 1.
The reference numbers in the figures illustrate: 1-a pressure stabilizing valve, 2-a zero-pressure main gas electromagnetic valve, 3-a PWM fan, 4-a Venturi premixer, 5-a gas valve, 6-a furnace end, 7-an ignition needle, 8-an ion needle and 9-a commercial gas stove front premixing controller.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
As shown in fig. 1-3, a front premix burner for a commercial gas stove comprises a control valve set, a PWM fan 3 configured with a venturi premixer 4, and a burner head 6, wherein:
the control valve group is composed of a pressure stabilizing valve 1 and a zero-pressure main gas electromagnetic valve 2, wherein the inlet end of the pressure stabilizing valve 1 is connected with a gas inlet pipeline of gas, the outlet end of the pressure stabilizing valve 1 is connected with the inlet end of the zero-pressure main gas electromagnetic valve 2 through a pipeline, the outlet end of the zero-pressure main gas electromagnetic valve 2 is connected with the inlet end of a PWM (pulse-width modulation) fan 3 through a pipeline, the outlet end of the PWM fan 3 is connected with a gas valve 5 at the inlet end of a furnace end 6 through a pipeline, the inlet end of a Venturi premixer 4 leads to the external environment, and the outlet end.
In the invention, when gas enters the PWM fan 3 through the pressure stabilizing valve 1 and the gas electromagnetic valve 2 of the zero-pressure main pipe and is sent out from the PWM fan 3, the pressure difference is formed between the inlet end and the outlet end of the Venturi premixer 4, so that external ambient air enters the PWM fan 3 to be fully premixed with the gas, and then is sent to the furnace end 6 through the PWM fan 3. When the PWM fan 3 generates suction pressure, the gas electromagnetic valve 2 of the zero-pressure main pipe always keeps the offset pressure at zero point and compensates the pressure fluctuation in the gas supply pipe network.
The invention also comprises a commercial gas stove front premixing controller 9, wherein the commercial gas stove front premixing controller 9 is respectively and electrically connected with the PWM fan 3, the gas valve 5 and the zero-pressure main pipe gas electromagnetic valve 2, the commercial gas stove front premixing controller 9 controls the PWM fan 3 to work based on digital signals, and the commercial gas stove front premixing controller 9 controls the gas valve 5 and the zero-pressure main pipe gas electromagnetic valve 2 to be opened and closed.
According to the invention, the rotating speed of the PWM fan 3 is regulated and controlled by the front premixing controller 9 of the commercial gas stove, so that different pressure differences are formed at the inlet and the outlet of the Venturi premixer 4, and further, the air quantity sucked by the PWM fan 3 is controlled to meet the gas and air ratio under different heat loads, and the stability of the combustion state is realized.
In the invention, an ignition needle 7 and an ion needle 8 are arranged in a burner 6, the ignition needle 7 and the ion needle 8 are respectively and electrically connected with a commercial gas stove front premixing controller 9, and the commercial gas stove front premixing controller 9 acquires state signals of the ignition needle 7 and the ion needle 8.
The premixing controller 9 in front of the commercial gas stove is provided with a display, and meanwhile, a remote transmission interface is integrated in the premixing controller in front of the commercial gas stove, so that remote transmission and detection of data are realized.
When the commercial gas stove starts to be used, firstly, a power supply is started to carry out power-on self-test, whether the zero-pressure gas main pipe electromagnetic valve 2 is in a closed state or has other abnormity is detected, whether the ion needle 8 has a flame ignition signal is detected, and if the failure occurs, the premixing controller prompts a failure code in a display screen before the commercial gas stove. After the self-checking is normal, the PWM fan 3 operates at full load to sweep the hearth, unburned gas in the hearth is prevented, the PWM fan 3 automatically reduces the load and is in an ignition state after the sweeping is finished, at the moment, an ignition needle 7 starts high-voltage discharge ignition, the gas is input from a pressure stabilizing valve 1, a zero-pressure gas main pipe electromagnetic valve 2 is opened, and a gas valve 5 is opened to ignite a gas-air mixture in a furnace end 6;
when needs increase the firepower, rotatory gas valve 5 handle (when gas valve 5 is manual control), the handle drives spherical case and follows the rotation for the gas supply increases, and commercial gas kitchen range front premix controller 9 control PWM fan 3 load promotes, and the air feed also increases in step and mixes through venturi mixer 4, guarantees gas and air ratio, reachs furnace end 6 and satisfies stable and efficient burning. The valve handle is rotated to simultaneously adjust the air inflow and the air inflow.
In the cooking process, when a cook needs to take out a pot for loading a plate, add seasonings, leave a hearth and the like without needing large firepower, the minimum firepower can be switched to reduce meaningless fuel consumption, meanwhile, the load of the PWM fan 3 is reduced, the heat in the hearth cannot be blown away, and the heat dissipation loss of the hearth is minimized; when strong fire power is needed, the state is switched to a strong fire state by one key;
the embodiments of the present invention are described only for the preferred embodiments of the present invention, and not for the limitation of the concept and scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall into the protection scope of the present invention, and the technical content of the present invention which is claimed is fully set forth in the claims.
Claims (5)
1. A front premix burner for a commercial gas stove characterized by: the control valve group consists of a pressure stabilizing valve and a zero-pressure main gas electromagnetic valve, wherein the inlet end of the pressure stabilizing valve is connected with a gas inlet pipeline of gas, the outlet end of the pressure stabilizing valve is connected with the inlet end of the zero-pressure main gas electromagnetic valve through a pipeline, the outlet end of the zero-pressure main gas electromagnetic valve is connected with the inlet end of the PWM fan through a pipeline, the outlet end of the PWM fan is connected with a gas valve at the inlet end of the furnace end through a pipeline, the inlet end of the Venturi premixer leads to the external environment, the outlet end of the Venturi premixer is communicated to the interior of the PWM fan, so that the gas enters the PWM fan through the pressure stabilizing valve and the zero-pressure main gas electromagnetic valve, when the gas is sent out from the PWM fan, the inlet end and the outlet end of the Venturi premixer form pressure difference, and external ambient air enters the PWM fan to, then the mixture is sent to a furnace end by a PWM fan;
the pre-mixing controller before the commercial gas stove controls the PWM fan to work based on digital signals, and controls the gas valve and the gas electromagnetic valve of the zero-pressure main pipe to be opened and closed.
2. A front premix burner for a commercial gas stove as in claim 1, wherein: an ignition needle and an ion needle are arranged in the burner, the ignition needle and the ion needle are respectively and electrically connected with a front premixing controller of the commercial gas stove, and the front premixing controller of the commercial gas stove collects state signals of the ignition needle and the ion needle.
3. A front premix burner for a commercial gas stove as in claim 1, wherein: the premixing controller is arranged in front of the commercial gas stove and is provided with a display, and meanwhile, a remote transmission interface is integrated in the premixing controller in front of the commercial gas stove, so that remote transmission and detection of data are realized.
4. A front premix burner for a commercial gas stove as in claim 1, wherein: when the PWM fan generates suction pressure, the gas electromagnetic valve of the zero-pressure main pipe always keeps the offset pressure at zero point and compensates the pressure fluctuation in the gas supply pipe network.
5. A front premix burner for a commercial gas stove as in claim 1, wherein: the PWM fan rotating speed is regulated and controlled through the commercial gas stove front premixing controller, so that different pressure differences are formed at an inlet and an outlet of the Venturi premixing device, the air quantity sucked by the PWM fan is controlled to meet the gas and air ratio under different heat loads, and the combustion state is stable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010248241.3A CN111322614A (en) | 2020-04-01 | 2020-04-01 | Front premixing burner for commercial gas stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010248241.3A CN111322614A (en) | 2020-04-01 | 2020-04-01 | Front premixing burner for commercial gas stove |
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| Publication Number | Publication Date |
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| CN111322614A true CN111322614A (en) | 2020-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010248241.3A Pending CN111322614A (en) | 2020-04-01 | 2020-04-01 | Front premixing burner for commercial gas stove |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112097257A (en) * | 2020-10-14 | 2020-12-18 | 合肥顺昌分布式能源综合应用技术有限公司 | Premixing device before gas of gas kitchen range |
| CN112212364A (en) * | 2020-10-14 | 2021-01-12 | 合肥顺昌分布式能源综合应用技术有限公司 | Pre-mixing control system for commercial gas cooker |
| CN112303679A (en) * | 2020-09-25 | 2021-02-02 | 南京飞月商用厨具制造有限公司 | Gas and air quantity intelligent control system for cooking range |
| CN112610987A (en) * | 2021-01-12 | 2021-04-06 | 广州合隆智能设备有限公司 | Cooking range system |
| CN112728591A (en) * | 2021-01-12 | 2021-04-30 | 广州合隆智能设备有限公司 | Cooking stove system controller, cooking stove control system and cooking stove control method |
-
2020
- 2020-04-01 CN CN202010248241.3A patent/CN111322614A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112303679A (en) * | 2020-09-25 | 2021-02-02 | 南京飞月商用厨具制造有限公司 | Gas and air quantity intelligent control system for cooking range |
| CN112097257A (en) * | 2020-10-14 | 2020-12-18 | 合肥顺昌分布式能源综合应用技术有限公司 | Premixing device before gas of gas kitchen range |
| CN112212364A (en) * | 2020-10-14 | 2021-01-12 | 合肥顺昌分布式能源综合应用技术有限公司 | Pre-mixing control system for commercial gas cooker |
| CN112610987A (en) * | 2021-01-12 | 2021-04-06 | 广州合隆智能设备有限公司 | Cooking range system |
| CN112728591A (en) * | 2021-01-12 | 2021-04-30 | 广州合隆智能设备有限公司 | Cooking stove system controller, cooking stove control system and cooking stove control method |
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