CN200940836Y - Pulse control device for burner - Google Patents
Pulse control device for burner Download PDFInfo
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- CN200940836Y CN200940836Y CN 200620124192 CN200620124192U CN200940836Y CN 200940836 Y CN200940836 Y CN 200940836Y CN 200620124192 CN200620124192 CN 200620124192 CN 200620124192 U CN200620124192 U CN 200620124192U CN 200940836 Y CN200940836 Y CN 200940836Y
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- 238000002485 combustion reaction Methods 0.000 claims abstract description 79
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 239000007789 gas Substances 0.000 claims description 57
- 230000001105 regulatory effect Effects 0.000 claims description 20
- 239000003034 coal gas Substances 0.000 claims description 18
- 238000005259 measurement Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 10
- 239000000567 combustion gas Substances 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims 1
- 239000000446 fuel Substances 0.000 abstract description 20
- 230000008859 change Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 5
- 230000003245 working effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 11
- 238000013461 design Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000003380 propellant Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 206010061218 Inflammation Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 238000011160 research Methods 0.000 description 1
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Abstract
The utility model relates to a combustor pulse control device guarantees combustion air and this problem of fuel proportional combustion in order to solve the influence and the fuel composition and the pressure fluctuation of flow variation to the combustor characteristic, the utility model discloses a pulse control system adopts the on-off control to a plurality of combustors, according to temperature signal promptly, and air and fuel pressure are unchangeable before keeping the combustor, under the unchangeable condition of the working property of combustor promptly, change the control and the gas proportional control that energy output is realized to the switching quantity of nozzle in the combustion cycle. The utility model can automatically adjust the quantity of combustion-supporting air when the heat value and pressure of the gas fluctuate, and realize the proportion adjustment of the air and the gas; the opening and closing of the burner are automatically controlled through the automatic gas opening and closing valve and the automatic combustion air opening and closing valve, so that the closed-loop control of temperature signals and output energy is realized; meanwhile, the burners are alternately opened and closed, so that hearth airflow disturbance is increased, the temperature uniformity of the hearth is improved, the material heating mass is guaranteed, and the fuel is saved.
Description
Technical field
The utility model relates to a kind of burner pulse control unit, particularly relates to a kind of pulse control technique that adopts the energy output of burner is controlled, and can adapt to the burner pulse control unit that fuel condition changes.
Background technology
Burner is a visual plant of heating furnace heat supply, in actual conditions, need the energy output of burner be controlled according to the requirement and the target temperature signal of heating process.What generally adopt is conventional flow proportional control technology, promptly regulates the fuel of supplying temperature control zone and the flow of combustion air respectively according to the fire box temperature signal, realizes the control of energy output and the ratio adjusting of combustion air and fuel.
There is following deficiency in flow proportional control technology conventional in practical operation: the required fuel quantity in control zone and combustion-supporting air quantity change with heating inventory and material breediness and heating process different that ratio that the proportion control technology can realize combustion air and fuel is regulated but the characteristic of each burner has taken place to change especially in changes in flow rate greatly the time at this moment, bigger variation has taken place in burner characteristic [flame profile, length, temperature characterisitic], be difficult to guarantee the uniformity of control zone internal furnace temperature, influence heating quality.
This shows that above-mentioned existing flow proportional control technology obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.In order to solve the problem that the flow proportional control technology exists, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.
Because the defective that above-mentioned existing flow proportional control technology exists, the design people is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of founding a kind of burner pulse control unit of new structure, can improve general existing flow proportional control technology, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, create the utility model that has practical value finally.
Summary of the invention
Main purpose of the present utility model is, overcome the defective that existing flow proportional control technology exists, and provide a kind of new burner pulse control unit, technical problem to be solved is to make it by changing control and the proportion control that the switching quantity of burner in combustion period realizes energy output, thereby be suitable for practicality more, and have the value on the industry.
The purpose of this utility model and to solve its technical problem be to adopt following technical scheme to realize.According to a kind of burner pulse control unit that the utility model proposes, it comprises: the combustion air pipeline, the combustion-supporting air flow measuring device, the combustion air flow automatic regulating valve, computer/PLC control system, gas piping, measurement of gas flow device, gas flow control valve, Hand-operated butterfly valve before the gas jet, combustion air Hand-operated butterfly valve before the mouth, coal gas automatic on/off valve, combustion air automatic on/off valve, combustion air pressure point before the mouth, pressure point before the gas jet, burner, temperature detection thermocouple and burner; On above-mentioned gas piping and combustion air pipeline, be respectively equipped with measurement of gas flow device and combustion-supporting air flow measuring device, and gas flow control valve and combustion air flow automatic regulating valve; Above-mentioned gas piping is connected with one or more burner respectively with the combustion air pipeline, and combustion air Hand-operated butterfly valve before Hand-operated butterfly valve and the mouth before before each burner, being respectively equipped with gas jet, and coal gas automatic on/off valve and combustion air automatic on/off valve; In the heating furnace burner hearth, be provided with the temperature detection thermocouple, 15; Pressure point before between above-mentioned coal gas automatic on/off valve and burner, being provided with gas jet; Combustion air pressure point before between combustion air automatic on/off valve and burner, being provided with mouth.
The purpose of this utility model and solve its technical problem and can also be further achieved by the following technical measures.
Aforesaid burner pulse control unit, wherein said measurement of gas flow device, combustion-supporting air flow measuring device, and the gas flow control valve is connected with computer/PLC control system 4 respectively with the combustion air flow automatic regulating valve, automatically regulate combustion-supporting air quantity, realize that the ratio of air and combustion gas is regulated.
Aforesaid burner pulse control unit, wherein said coal gas automatic on/off valve, combustion air automatic on/off valve, and the temperature detection thermocouple that in burner hearth, is provided with, be connected with computer/PLC control system respectively, setting opens and closes order and the switching time alternately opens and closes the burner that is positioned at the burner outer end, according to its output energy of temperature signal closed-loop control.
Aforesaid burner pulse control unit, the preceding combustion air pressure point position of pressure point and mouth is installed and is provided with interim pressure tester before the wherein said gas jet, manually adjust preceding Hand-operated butterfly valve of gas jet and the preceding combustion air Hand-operated butterfly valve of mouth, make it reach the calibration value of burner.
The utility model compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, in order to reach aforementioned goal of the invention, major technique of the present utility model thes contents are as follows:
The utility model proposes a kind of burner pulse control unit, in order to solve influence and propellant composition and the pressure oscillation of changes in flow rate to burner characteristic, guarantee combustion air and fuel this problem of burning in proportion, pulse-control system of the present utility model adopts the switch control to a plurality of burners, promptly according to temperature signal, air and fuel pressure are constant before keeping burner, be under the constant condition of the operating characteristic of burner, change control and combustion gas proportion control that the switching quantity of burner in combustion period realizes energy output.The utility model can be regulated combustion-supporting air quantity automatically, realizes that the ratio of air and combustion gas is regulated; And, control the switching of burner automatically by coal gas automatic on/off valve and combustion air automatic on/off valve, realize temperature signal and the closed-loop control of exporting energy; And alternately opening and closing of burner increased the burner hearth flow perturbation, improved the fire box temperature uniformity, guarantees the material heating quality, fuel savings.
By technique scheme, the utility model burner pulse control unit has following advantage at least:
1, computer/PLC control system is regulated combustion-supporting air quantity automatically, guarantees online air-fuel ratio control in the reasonable scope, realizes that the ratio of air and combustion gas is regulated.
2, according to target temperature and on-line measurement temperature signal, computer/PLC control system by coal gas automatic on/off valve and combustion air automatic on/off valve, is controlled the switching of burner automatically, realizes temperature signal and the closed-loop control of exporting energy.
3, interim pressure tester is installed at pressure point place before combustion air pressure point and the gas jet before mouth, manually adjusts before the gas jet combustion air Hand-operated butterfly valve before the Hand-operated butterfly valve and mouth according to the burner performance curve, makes burner be in the best effort scope.
4, alternately opening and closing of burner increased the burner hearth flow perturbation, improved the fire box temperature uniformity, guarantees the material heating quality, fuel savings.
In sum, the burner pulse control unit of the utility model special construction, it has above-mentioned many advantages and practical value, and in like product, do not see have similar structural design to publish or use and really genus innovation, no matter it structurally or bigger improvement all arranged on the function, have large improvement technically, and produced handy and practical effect, and more existing flow proportional control technology has the multinomial effect of enhancement, thereby be suitable for practicality more, and have the extensive value of industry, really be a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, below with preferred embodiment of the present utility model and conjunction with figs. describe in detail as after.
The specific embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is the utility model burner pulse control unit system diagram.
Fig. 2 is a hearth combustor floor plan of the present utility model.
1: combustion air pipeline 2: the combustion-supporting air flow measuring device
3: combustion air flow automatic regulating valve 4: computer/PLC control system
5: gas piping 6: the measurement of gas flow device
7: gas flow control valve 8: Hand-operated butterfly valve before the gas jet
9: combustion air Hand-operated butterfly valve 10 before the mouth: coal gas automatic on/off valve
11: combustion air automatic on/off valve 12: combustion air pressure point before the mouth
13: pressure point 14 before the gas jet: burner
15: temperature detection thermocouple 16: burner
The specific embodiment
For further setting forth the utility model is to reach technological means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, to according to its specific embodiment of burner pulse control unit, structure, feature and the effect thereof that the utility model proposes, describe in detail as after.
In order to solve influence and propellant composition and the pressure oscillation of changes in flow rate to burner characteristic, guarantee combustion air and fuel this problem of burning in proportion, this pulse-control system adopts the switch control to a plurality of burners, promptly according to temperature signal, before keeping burner, under the constant condition of the operating characteristic of air and the constant burner of fuel pressure, change control and combustion gas proportion control that the switching quantity of burner in combustion period realizes energy output.
See also Fig. 1, shown in Figure 2, the utility model burner pulse control unit, it mainly comprises: combustion air pipeline 1, combustion-supporting air flow measuring device 2, combustion air flow automatic regulating valve 3, computer/PLC control system 4, gas piping 5, measurement of gas flow device 6, Hand-operated butterfly valve 8 before the gas flow control valve 7, gas jet, combustion air Hand-operated butterfly valve 9 before the mouth, coal gas automatic on/off valve 10, combustion air pressure point 12 before the combustion air automatic on/off valve 11, mouth, pressure point 13 before the gas jet, burner 14, temperature detection thermocouple 15, burner 16.
The technical scheme that the utility model burner pulse control unit is adopted is: gas piping 5 and combustion air pipeline 1 in the control zone are respectively equipped with measurement of gas flow device 6 and combustion-supporting air flow measuring device 2, and gas flow control valve 7 and combustion air flow automatic regulating valve 3; According to fuel flow rate and propellant composition, computer/PLC control system 4 is regulated combustion-supporting air quantity automatically, guarantees online air-fuel ratio control in the reasonable scope, realizes that the ratio of air and combustion gas is regulated.
According to the best effort characteristic of burner 14, adjust before the gas jet before the burner 14 combustion air Hand-operated butterfly valve 9 before the Hand-operated butterfly valve 8 and mouth, reach pressure before the mouth of required fuel of its best effort characteristic and combustion air; In the heating furnace burner hearth, be provided with temperature detection thermocouple 15, according to target temperature and on-line measurement temperature signal, computer/PLC control system 4 is calculated the open and close quantity of burner 16 automatically, by being installed in coal gas automatic on/off valve 10 and the combustion air automatic on/off valve 11 before the burner 14, automatically the switching of control burner 16 realizes temperature signal and the closed-loop control of exporting energy.
Switching order and the switching time-interleaved switching burner 16 of burner 14 by configuring, each burner was all worked in the scope of optkmal characteristics in the opening time, burner 16 alternately opens and closes in addition, increased the burner hearth flow perturbation, improved the fire box temperature uniformity, guarantee the material heating quality, fuel savings.
See also Fig. 1, shown in Figure 2 again, the utility model burner pulse control unit, its groundwork process is as described below:
At first all valve closings among the figure of gas piping.Gas piping 5 is connected coal gas, combustion air pipeline 1 is connected combustion air, open combustion air flow automatic regulating valve 3, gas flow control valve 7, the automatic on/off valve 10 that turns on the gas-fire, combustion air automatic on/off valve 11, open the preceding combustion air Hand-operated butterfly valve 9 of mouth on a small quantity, the preceding Hand-operated butterfly valve 8 of the mouth that turns on the gas-fire is on a small quantity lighted a fire, after lighting a fire successfully valve 9 and valve 8 are all opened burner complete inflammation of The whole control district and smooth combustion.
Adjust the characteristic of burner 14: pressure point 13 is installed interim pressure tester before combustion air pressure point 12, the gas jet before mouth, manually adjust before the gas jet combustion air Hand-operated butterfly valve 9 before the Hand-operated butterfly valve 8 and mouth according to the burner performance curve, make it reach burner 14 calibration values, fixed manual valve 8 and 9 position make burner 14 be in the best effort scope.Finish the adjustment of all burners in the heating furnace successively, make it all be in the best effort scope.
Automatically regulate flow proportional: close a burner,, adjust gas flow control valve 7, make its flow and pressure in design work value scope according to the design heating cycle.Computer/PLC control system 4 is according to the signal and the gas composition of measurement of gas flow device 6, automatically regulate combustion air flow automatic regulating valve 3, make its flow of measuring combustion-supporting air flow measuring device 2 and the burning of coal gas ratio, thereby avoid gas pressure or calorific value to fluctuate the influence of combustion system.
The pulse control technique of system: computer/PLC control system 4 is according to the online temperature measurement signal of temperature objectives value and temperature detection thermocouple 15, calculate the switching quantity of combustor nozzle 16, according to setting 16 switching times of combustor nozzle and switching order, automatically control the preceding coal gas automatic on/off valve 10 of mouth, combustion air automatic on/off valve 11, burner automatic combustion and closing has been realized opening and closing the output of quantity control energy by burner.Because alternately opening and closing of combustor nozzle 16 strengthened the flow perturbation of burner hearth, fire box temperature is more even, and heating quality is good.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model, any those skilled in the art, in the scope that does not break away from technical solutions of the utility model, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be not break away from the technical solutions of the utility model content, foundation technical spirit of the present utility model is to above any simple modification that embodiment did, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.
Claims (4)
1, a kind of burner pulse control unit is characterized in that it comprises: combustion air pipeline, combustion-supporting air flow measuring device, the combustion air flow automatic regulating valve, computer/PLC control system, gas piping, the measurement of gas flow device, Hand-operated butterfly valve before the gas flow control valve, gas jet, combustion air Hand-operated butterfly valve before the mouth, coal gas automatic on/off valve, combustion air automatic on/off valve, combustion air pressure point before the mouth, pressure point before the gas jet, burner, temperature detection thermocouple and burner;
On above-mentioned gas piping and combustion air pipeline, be respectively equipped with measurement of gas flow device and combustion-supporting air flow measuring device, and gas flow control valve and combustion air flow automatic regulating valve;
Above-mentioned gas piping is connected with more than one burner respectively with the combustion air pipeline, and combustion air Hand-operated butterfly valve before Hand-operated butterfly valve and the mouth before before each burner, being respectively equipped with gas jet, and coal gas automatic on/off valve and combustion air automatic on/off valve; In the heating furnace burner hearth, be provided with the temperature detection thermocouple;
Pressure point before between above-mentioned coal gas automatic on/off valve and burner, being provided with gas jet; Combustion air pressure point before between combustion air automatic on/off valve and burner, being provided with mouth.
2, burner pulse control unit according to claim 1, it is characterized in that wherein said measurement of gas flow device, combustion-supporting air flow measuring device, and the gas flow control valve is connected with computer/PLC control system (4) respectively with the combustion air flow automatic regulating valve, automatically regulate combustion air and coal gas amount, realize that the ratio of air and combustion gas is regulated.
3, burner pulse control unit according to claim 1, it is characterized in that wherein said coal gas automatic on/off valve, combustion air automatic on/off valve, and the temperature detection thermocouple that in burner hearth, is provided with, be connected with computer/PLC control system respectively, setting opens and closes order and the switching time alternately opens and closes the burner that is positioned at the burner outer end, according to its output energy of temperature signal closed-loop control.
4, burner pulse control unit according to claim 1, the installation of combustion air pressure point position is provided with interim pressure tester before it is characterized in that preceding pressure point of wherein said gas jet and mouth, manually adjust preceding Hand-operated butterfly valve of gas jet and the preceding combustion air Hand-operated butterfly valve of mouth, make it reach the calibration value of burner.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620124192 CN200940836Y (en) | 2006-08-14 | 2006-08-14 | Pulse control device for burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620124192 CN200940836Y (en) | 2006-08-14 | 2006-08-14 | Pulse control device for burner |
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| CN200940836Y true CN200940836Y (en) | 2007-08-29 |
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| CN 200620124192 Expired - Lifetime CN200940836Y (en) | 2006-08-14 | 2006-08-14 | Pulse control device for burner |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936667A (en) * | 2010-08-25 | 2011-01-05 | 盐城市康杰机械制造有限公司 | Explosion prevention system for fuel gas aluminum brazing thermal-degreasing furnace |
| CN101949549A (en) * | 2010-10-18 | 2011-01-19 | 攀钢集团钢铁钒钛股份有限公司 | Flow control method of combustion system |
| CN101655245B (en) * | 2009-09-04 | 2011-03-16 | 江苏焱鑫科技股份有限公司 | Multiparameter automatic control method of industrial furnace burner |
| CN102221221A (en) * | 2011-03-29 | 2011-10-19 | 上海宝钢工业检测公司 | Gas pressure layering control method of pulse-combustion industrial furnace |
| CN102937382A (en) * | 2012-11-21 | 2013-02-20 | 中冶南方(武汉)威仕工业炉有限公司 | Adjusting and optimizing method of ratio-controlled combustion system |
| CN104819462A (en) * | 2015-05-12 | 2015-08-05 | 理昂新能源股份有限公司 | Biomass boiler and application method thereof |
| CN104819459A (en) * | 2015-04-30 | 2015-08-05 | 蒙阴远通达车辆机械有限公司 | Gas heating furnace |
| CN106196052A (en) * | 2015-11-13 | 2016-12-07 | 钟海胜 | Intelligent pulse combustion system |
| CN107560446A (en) * | 2017-09-25 | 2018-01-09 | 佛山市南海鑫隆机工机械有限公司 | A kind of full-automatic control system and its control method of consecutive production kiln |
| CN107763656A (en) * | 2017-11-17 | 2018-03-06 | 江苏闳业机械股份有限公司 | A kind of compounding machine flame system fuel gas mechanism |
| CN110953895A (en) * | 2019-12-24 | 2020-04-03 | 攀钢集团西昌钢钒有限公司 | Calibration method of pulse type heating furnace |
| CN112524968A (en) * | 2020-11-30 | 2021-03-19 | 盐城市联鑫钢铁有限公司 | Energy-saving heating furnace combustion control method |
-
2006
- 2006-08-14 CN CN 200620124192 patent/CN200940836Y/en not_active Expired - Lifetime
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101655245B (en) * | 2009-09-04 | 2011-03-16 | 江苏焱鑫科技股份有限公司 | Multiparameter automatic control method of industrial furnace burner |
| CN101936667B (en) * | 2010-08-25 | 2012-07-04 | 盐城市康杰机械制造有限公司 | Explosion prevention system for fuel gas aluminum brazing thermal-degreasing furnace |
| CN101936667A (en) * | 2010-08-25 | 2011-01-05 | 盐城市康杰机械制造有限公司 | Explosion prevention system for fuel gas aluminum brazing thermal-degreasing furnace |
| CN101949549A (en) * | 2010-10-18 | 2011-01-19 | 攀钢集团钢铁钒钛股份有限公司 | Flow control method of combustion system |
| CN102221221B (en) * | 2011-03-29 | 2016-01-20 | 宝钢工业炉工程技术有限公司 | The industrial furnace gaseous-pressure hierarchical control method of pulse-combustion |
| CN102221221A (en) * | 2011-03-29 | 2011-10-19 | 上海宝钢工业检测公司 | Gas pressure layering control method of pulse-combustion industrial furnace |
| CN102937382A (en) * | 2012-11-21 | 2013-02-20 | 中冶南方(武汉)威仕工业炉有限公司 | Adjusting and optimizing method of ratio-controlled combustion system |
| CN104819459A (en) * | 2015-04-30 | 2015-08-05 | 蒙阴远通达车辆机械有限公司 | Gas heating furnace |
| CN104819459B (en) * | 2015-04-30 | 2017-06-16 | 湛江新奥燃气有限公司 | Gas-fired heater |
| CN104819462A (en) * | 2015-05-12 | 2015-08-05 | 理昂新能源股份有限公司 | Biomass boiler and application method thereof |
| CN106196052A (en) * | 2015-11-13 | 2016-12-07 | 钟海胜 | Intelligent pulse combustion system |
| CN107560446A (en) * | 2017-09-25 | 2018-01-09 | 佛山市南海鑫隆机工机械有限公司 | A kind of full-automatic control system and its control method of consecutive production kiln |
| CN107560446B (en) * | 2017-09-25 | 2019-12-03 | 佛山市南海鑫隆机工机械有限公司 | A kind of full-automatic control system and its control method of consecutive production kiln |
| CN107763656A (en) * | 2017-11-17 | 2018-03-06 | 江苏闳业机械股份有限公司 | A kind of compounding machine flame system fuel gas mechanism |
| CN110953895A (en) * | 2019-12-24 | 2020-04-03 | 攀钢集团西昌钢钒有限公司 | Calibration method of pulse type heating furnace |
| CN110953895B (en) * | 2019-12-24 | 2021-12-03 | 攀钢集团西昌钢钒有限公司 | Calibration method of pulse type heating furnace |
| CN112524968A (en) * | 2020-11-30 | 2021-03-19 | 盐城市联鑫钢铁有限公司 | Energy-saving heating furnace combustion control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: CERI PHOENIX INDUSTRIAL FURNACE Co.,Ltd. Assignor: Capital Engineering & Research Incorporation Limited Contract record no.: 2011110000087 Denomination of utility model: Pulse controller of burner Granted publication date: 20070829 License type: Exclusive License Record date: 20110712 |
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| DD01 | Delivery of document by public notice |
Addressee: Beijing Sanyou Intellectual Property Agency Ltd. financial Document name: Notification of Approving Refund |
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| CX01 | Expiry of patent term |
Granted publication date: 20070829 |
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| EXPY | Termination of patent right or utility model |