CN102563722A - Control system for commercial gas cooker - Google Patents
Control system for commercial gas cooker Download PDFInfo
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- CN102563722A CN102563722A CN2012100487812A CN201210048781A CN102563722A CN 102563722 A CN102563722 A CN 102563722A CN 2012100487812 A CN2012100487812 A CN 2012100487812A CN 201210048781 A CN201210048781 A CN 201210048781A CN 102563722 A CN102563722 A CN 102563722A
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Abstract
The utility model discloses a control system for a commercial gas cooker. The commercial gas cooker comprises a blower for purging a hearth of the commercial gas cooker, and an igniter used for igniting. The control system for the commercial gas cooker is characterized by comprising an intense-fire solenoid valve, a weak-fire solenoid valve, a gas pressure switch, a gas leakage detector and a program controller, wherein the program controller is used for controlling all the components of the control system as well as the blower and the igniter according to the preset program and detecting the flame and all the components of the control system. The phenomenon of detonation in the closed hearth due to certain reasons is avoided; and whether the pressure of the gas source is controlled in the specified range or not and whether the gas cooker has the phenomenon of electric leakage or not are simultaneously monitored, so that the safety in use of the gas cooker is enhanced, the gas cooker is convenient to maintain, and when the system is abnormal, the gas source is cut off during the warning process, and meanwhile, the fault part is displayed.
Description
Technical field
The present invention relates to a kind of control system, particularly a kind of commercial gas-fired stove control system.
Background technology
Along with being widely used of combustion gas, the accident that causes because of operation, equipment reason during the combustion gas tool uses has the trend of increase, and great attention is should give in the security of combustion gas tool.
When being in the relative closure situation in the combustion chamber,, under following situation, possibly cause detonation like large stove, steam box etc.:
1, valve is not closed tight or valve gas leakage;
2, repeatedly lighting a fire not;
3, start-up burner extinguishes,
4, the supply gas pressure of combustion gas is unstable or when stopping the supple of gas or steam suddenly (when, steel cylinder full bottle not enough like the liquefied petroleum gas steel cylinder vaporization ability and raffinate), can produce the situation of fray-out of flame, thereby cause a large amount of leakages of combustion gas.
These situations cause combustion chamber accumulated combustion gas, when meeting incendiary source, produce deflagration phenomenon, and consequence is comparatively serious.
When existing commercial gas-fired stove control system generally adopted the thermocouple mode, the regulation valve-closing time was in 50s in its related standards, and the combustion gas of internal leakage during this period of time is enough to lead to danger.
Summary of the invention
The technical problem that the present invention will solve provides a kind of safe commercial gas-fired stove and controls system.When system broke down, burner was simultaneously out of service, sends alarm signal, and showed nature of trouble and position.
For solving the problems of the technologies described above; Commercial gas-fired stove of the present invention is controlled system; Said commercial gas-fired stove comprises and it is characterized in that blower fan that is used for the residing burner hearth of said commercial gas-fired stove is purged and the igniter that is used to light flame: said commercial gas-fired stove control system comprises:
The big fire magnetic valve is used to open and cuts out the big fire source of the gas;
Seedling thermoelectricity magnet valve is used to open and closes seedling internal heat source;
Gas pressure switch, whether the working pressure that is used to detect combustion gas is in the scope of regulation;
The gas leakage detector is used for whether having gas leakage around the checkout equipment;
Cyclelog; The components and parts such as said big fire magnetic valve, said seedling thermoelectricity magnet valve, said gas pressure switch and said gas leakage detector and the said blower fan and the said igniter of said commercial gas-fired stove that are used for said control system are controlled according to the preset program of said cyclelog, and components and parts such as flame and each said big fire magnetic valve of the present invention, said seedling thermoelectricity magnet valve, said igniter, said gas pressure switch and said gas leakage detector are monitored.
Preferably, said igniter is an electronic type high-voltage pulse igniter.
Preferably, said big fire magnetic valve, said seedling thermoelectricity magnet valve are normally closed solenoid valve.
Preferably, said preset program does,
At first, energized, said cyclelog sends to said blower fan and purges instruction, and said burner hearth is carried out preceding purging;
The second, igniting, said cyclelog sends firing command to seedling thermoelectricity magnet valve, opens seedling thermoelectricity magnet valve and lights a fire;
The 3rd, detect the flame that said igniting produces, said cyclelog detects said flame; If said flame is the seedling fire, said cyclelog sends instruction to said big fire magnetic valve, opens said big fire magnetic valve; Said commercial gas-fired stove is normally moved, if do not produce said flame, then said cyclelog sends out code to said seedling thermoelectricity magnet valve, said big fire magnetic valve; Close said seedling thermoelectricity magnet valve and said big fire magnetic valve, send alarm signal;
The 4th, during shutdown, said cyclelog sends the post-purge instruction to said blower fan, and said blower fan carries out post-purge to said burner hearth.
Preferably, said cyclelog is monitored said each components and parts of said flame and said control system, when said cyclelog unusual circumstance, closes combustion gas immediately and sends alarm signal, and show trouble location.
More preferably, said alarm signal is that voice signal and code show signal.
Bring into operation, whether controller detection system each several part has unusually, and whether whether gaseous-pressure in prescribed limit, have gas leakage around the equipment, and whether equipment has leaky.
As normally, preset program work is pressed by the control system:
Blower fan purges before burner hearth is done, and prevents that fuel gas from piling up at burner hearth; Igniting, seedling thermoelectricity magnet valve is opened; Flame detection is lighted like the seedling fire, opens the big fire magnetic valve, and equipment normally moves.
When equipment was out of service, blower fan was made post-purge to burner hearth, removed remaining combustion gas.
Bring into operation or in service, break down, or signal there is anomaly, close seedling thermoelectricity magnet valve and big fire magnetic valve immediately, cut off source of the gas like components and parts in the system, the signal of sounding, and show nature of trouble and position with code.
The deflagration phenomenon that the present invention has avoided some reason of closed furnace internal cause to produce.Whether the pressure of monitoring gas source simultaneously is in the scope of regulation, and whether checkout equipment has leaky, improving the safety in utilization of gas-fired equipment, and is convenient to maintenance, when reporting to the police and cutting off source of the gas when unusual appears in system, simultaneously, shows trouble location.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further detailed explanation.
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further detailed explanation.
Fig. 1 is control of the present invention system control block diagram;
Fig. 2 is a workflow diagram of the present invention
Fig. 3 is the detection of electrical leakage schematic diagram of cyclelog of the present invention;
Fig. 4 is the power management voltage commutation circuit schematic diagram of cyclelog of the present invention;
Fig. 5 is the blower fan control testing circuit schematic diagram of cyclelog of the present invention;
Fig. 6 is that the igniter of cyclelog of the present invention drives and igniter testing circuit schematic diagram;
Fig. 7 is a flame detection circuit schematic diagram of the present invention;
Fig. 8 is that the gas leakage of cyclelog of the present invention detects and the warning function circuit theory diagrams;
Fig. 9 is the driving and the testing circuit schematic diagram of the magnetic valve of cyclelog of the present invention;
Figure 10 is a gaseous-pressure testing circuit schematic diagram of the present invention;
Figure 11 is code Presentation Function circuit theory diagrams of the present invention;
The specific embodiment
Provide preferred embodiment of the present invention below in conjunction with accompanying drawing, to specify technical scheme of the present invention.
The invention discloses a kind of commercial gas-fired stove and control system.
Commercial gas-fired stove of the present invention control system, commercial gas-fired stove comprises and is used for blower fan that the residing burner hearth of commercial gas-fired stove is purged and the igniter that is used to light flame, commercial gas-fired stove control system comprises the big fire magnetic valve, is used to open and closes the big fire source of the gas; Seedling thermoelectricity magnet valve is used to open and closes seedling internal heat source; Gas pressure switch, whether the working pressure that is used to detect combustion gas is in the scope of regulation; The gas leakage detector is used for whether having gas leakage around the checkout equipment; Cyclelog; The components and parts such as said big fire magnetic valve, said seedling thermoelectricity magnet valve, said gas pressure switch and said gas leakage detector and the said blower fan and the said igniter of said commercial gas-fired stove that are used for said control system are controlled according to the preset program of said cyclelog, and components and parts such as flame and each said big fire magnetic valve of the present invention, said seedling thermoelectricity magnet valve, said igniter, said gas pressure switch and said gas leakage detector are monitored.Igniter is an electronic type high-voltage pulse igniter.Big fire magnetic valve, said seedling thermoelectricity magnet valve are normally closed solenoid valve.
Above-mentioned preset program does,
At first, energized, said cyclelog sends to said blower fan and purges instruction, and said burner hearth is carried out preceding purging;
The second, igniting, said cyclelog sends firing command to seedling thermoelectricity magnet valve, opens seedling thermoelectricity magnet valve and lights a fire;
The 3rd, detect the flame that said igniting produces, said cyclelog detects said flame; If said flame is the seedling fire, said cyclelog sends instruction to said big fire magnetic valve, opens said big fire magnetic valve; Said commercial gas-fired stove is normally moved, if do not produce said flame, then said cyclelog sends out code to said seedling thermoelectricity magnet valve, said big fire magnetic valve; Close said seedling thermoelectricity magnet valve and said big fire magnetic valve, send alarm signal;
The 4th, during shutdown, said cyclelog sends the post-purge instruction to said blower fan, and said blower fan carries out post-purge to said burner hearth.
Cyclelog is monitored said each components and parts of said flame and said control system, when said cyclelog unusual circumstance, closes combustion gas immediately and sends alarm signal, and show trouble location.Alarm signal is that voice signal and code show signal.
Bring into operation, whether controller detection system each several part has unusually, and whether whether gaseous-pressure in prescribed limit, have gas leakage around the equipment, and whether equipment has leaky.
If the result that controller detects is normal, preset program work is pressed by the control system:
Blower fan purges before burner hearth is done, and prevents that fuel gas from piling up at burner hearth; Igniting, seedling thermoelectricity magnet valve is opened; Flame detection is lighted like the seedling fire, opens the big fire magnetic valve, and equipment normally moves.
When equipment was out of service, blower fan was made post-purge to burner hearth, removed remaining combustion gas.
Bring into operation or in service, break down, or signal there is anomaly, close seedling thermoelectricity magnet valve and big fire magnetic valve immediately, cut off source of the gas like components and parts in the system, the signal of sounding, and show nature of trouble and position with code.
Workflow diagram for commercial gas-fired stove of the present invention control system shown in Figure 1, wherein code such as table 1 failure mode and code table are introduced identical.Code description in the associative list 1, after the native system energising, MCU (being cyclelog) will detect P1, P2, Q1, P3, Q2, Q3 is if after detecting above-mentioned code driving malfunction, HW shows the respective code of this driving at once; If each driving is all normal, P3 ignition transformer energising work was rotated in blower fan P1 energising 20 seconds; Send high tension spark, the Q1 seedling thermoelectricity magnet valve energising of delaying time after 1 second is opened, and P4 flame detects and drives the beginning flame detection simultaneously; If do not detect flame, close Q1 seedling thermoelectricity magnet valve after 4 seconds, delaying time, P3 lights a fire once more after 4 seconds; And opened Q1 seedling thermoelectricity magnet valve after delaying time 1 second once more, and if driving, P4 flame also do not detect flare up fire, this moment, representative system had fault; HW also shows corresponding code, and is as shown in table 1, if detect flame; Delay time and open the big fire magnetic valve that Q1 drives after 3 seconds, get into the normal operating conditions burning, shutdown back P1 blower fan post-purge orderly closedown after 60 seconds.
Table 1
Shown in Figure 2 is workflow diagram of the present invention.Wherein P1 is the blower fan control module, and P3 is that ignition transformer control drives, and Q1 is that solenoid control drives; P4 is that flame detects driving, and Q2 is that detection of electrical leakage drives, and Q3 is that gas leakage detects driving; P2 is that pressure detecting drives; HW is the fault display driver, and A2 drives for reporting to the police, and A1 is that power management drives.
Shown in Figure 3 is the sketch map of the detection of electrical leakage of cyclelog of the present invention.The circuit of this function is by fuse 111, coil 112,113, and resistance 126,124, diode 125 and electrochemical capacitor 123 are formed.When equipment has leaky, form faint direct current, coil 112 perfectly straight flow resistances exchange.The leakage current signal arrives coil 113 under the influence that does not receive AC signal like this, through the amplification of coil 113, leads to resistance 126 and diode 125, and these two elements are used to guarantee that the electric leakage signal stabilizing effective is transferred to MCU.Resistance 126 and electrochemical capacitor 123 are used to prevent the interference of AC signal.Electric leakage signal is through pin P147, be transferred to MCU after, make corresponding reaction by MCU.
Shown in Figure 4 is the sketch map of the power management voltage switching of cyclelog of the present invention.The element of this module has, transformer 145, rectifier bridge 114, electrochemical capacitor 115,116, switching mode lowering and stabilizing blood pressure device 146, Zener diode 117, electrochemical capacitor 116,118,120, electric capacity 115,119,121, coil 122.After the 220V alternating current passed through transformer 145,220V voltage became the 12V alternating current.Rectifier bridge 114 just changes the alternating current of 12V into direct current, and electric capacity 115 and electrochemical capacitor 116 have played the effect of filtering, make the voltage of its output more stable, and 12V is output among the figure.In order to realize the output of 5V, the present invention has used a switching mode lowering and stabilizing blood pressure device, and more common three-terminal voltage-stabilizing pipe is more stable; Through switching mode lowering and stabilizing blood pressure device; The voltage of 12V is output as the direct current of 5V, through Zener diode 117, and electrochemical capacitor 118,120; Electric capacity 119,121 and coil 122 are realized filtering, reach stable 5V direct current output.Thereby realize the DC voltage of control 220V alternating voltage output 12V and 5V.
Shown in Figure 5 is the sketch map of the blower fan control detection of cyclelog of the present invention.By relay 134, diode 133,129, triode 135, resistance 132,130,128, inductance capacitance 127 and transformer 131 are formed.Through MCU control fan starting, when MCU sends enabling signal, triode 135 conductings, relay switch is closed, fan starting, diode 133 is used for protective relay.Transformer is used to transmit the run signal of blower fan, and run signal is through resistance 130 during like fan starting, and diode 129 is transferred to MCU.MCU makes control corresponding, as closes blower fan.Resistance 128, inductance capacitance 127 is used for stablizing the blower fan run signal, prevents the interference of other signals.The mode of closing blower fan is opposite with the mode of opening blower fan, and both MCU sent the signal of closing blower fan, and blower fan cuts out, and exports the signal of having closed.
Shown in Figure 6 is the sketch map that igniter drives and igniter detects of cyclelog of the present invention.Circuit comprises rectifier bridge 143, photoelectrical coupler 142, resistance 141, inductance capacitance 140, relay 139, diode 138, triode 136, resistance 137.The same with Fig. 3 blower fan gauge tap circuit, the driving of igniter is sent enabling signal by MCU, and triode 136 conductings make the switch closure in the relay.Signal is transferred to igniter, the igniter ignition trigger; After igniter started, enabling signal was transferred to rectifier bridge 143, and photoelectrical coupler 142 reaches stabilization signal and inputs to MCU.When MCU detects signal, explain that igniter starts.
Flame for device cyclelog of the present invention shown in Figure 7 detects sketch map.This functional module is by 1 flame ion probe/4,4,2 resistance of earth connection 611,612, and an electric capacity 613 and a flame detection module (containing a comparator) are formed.When the 4th function (igniter driving) worked, the flame ion probe was if detect flame, and ion probe forms the effect that unidirectional conducting reaches detection signal so.After detecting signal, judge through the comparator in the flame detection module whether signal is flare up fire, if flare up fire then is transferred to MCU through P614.Resistance 612 among the figure is used for stabling current and protects the flame detection module, the flare up fire of electric capacity 613 stable input MCU.
Shown in Figure 8 is the gas leakage detection of cyclelog of the present invention and the sketch map of warning function.This module is by 4 resistance 511,513,514,515, triode Q1, and electric capacity 512 and buzzer 516 are formed.Middle module is a MQ-2 combustion gas detecting module.When the combustion gas detecting module detected fuel gas, the signal that sends was transferred to MCU through P517.MCU then sends signal through P518, and resistance 511 is used for stablizing output current, and Q1 conducting this moment starts buzzer 516 buzzings.For other fault, like leak current fault, fan trouble etc. also can start buzzer warning through the P518 lead-in wire simultaneously.Thereby realize the individual module multiple use.Electric capacity 512 among the figure, and resistance 513,514,515 is used for stablizing the combustion gas detectable signal.
The driving of the magnetic valve for cyclelog of the present invention shown in Figure 9 and the sketch map of detection.This function main circuit element comprises: resistance 1125,1124,1111,1117,1116,1114,1113,1112,1120; Electric capacity 1126,1129; Photoelectrical coupler 1122,1123,1112; Darlington transistor 1130,1131,1132,1133, diode 1115,1121,1119 and magnetic valve 1L00, magnetic valve 2L00.Its cardinal principle is that Darlington transistor drives magnetic valve 1,2L00.Photoelectrical coupler 1122,1123,1112 is used to prevent that other signals from disturbing the driving of Darlington transistor, and resistance and electric capacity are used for stabling current and signal among the figure, effectively transmission.When MCU passes through P1137, P1136, P1135; When P1134 sent the signal that starts magnetic valve, Darlington transistor started magnetic valve, after magnetic valve starts; Accomplish the signal that starts and pass through P1139, P1138 is transferred to MCU, makes MCU detect magnetic valve and drives; If signal does not send then that MCU does not receive enabling signal, served as certain delay after, MCU begins to report to the police through the buzzer of the 6th functional module.Diode 1119,1121 among the figure is used to protect magnetic valve not receive the interference of other electric currents.
Shown in Figure 10 is the sketch map that gaseous-pressure of the present invention detects.Its composition has pressure switch 316, resistance 311,314, inductance capacitance 312,313.After gaseous-pressure acquires a certain degree, pressure switch 316 closures, circuit turn-on, the signal of telecommunication just can input to MCU through P315.Inductance capacitance 312,313 is used for filtering among the figure, to reach the stable transfer of the signal of telecommunication.
Shown in Figure 11 for the sketch map of code Presentation Function of the present invention.This module is by the LED charactron, pnp triode 216,214, and 220,215,213,212,211 and 2 light emitting diodes of resistance are formed.When cyclelog was started working, if fault-free shows that then the light emitting diode green light is bright, then luminescent diode red lamp was bright if fault is arranged.Triode plays on-off action.The fault demonstration sees table 1 for details.It is characterized in that system is made up of integral combustor, controller, igniter, gas pressure switch, seedling thermoelectricity magnet valve, big fire magnetic valve, manually-operated gate etc.Burner control system possesses and burner hearth is carried out functions such as front and back purging, flame detection, blowout protection, gaseous-pressure protection, gas leakage protection; Duty to components and parts such as the magnetic valve of system, blower fan, pressure switches is monitored in real time; Any fault appears in system; Burner is simultaneously out of service, sends alarm signal, and shows trouble location.
Above-mentioned design example only is used for that the present invention will be described, does not constitute the restriction to the claim scope, and other substantial equivalence means that it may occur to persons skilled in the art that are all in claim scope of the present invention.
Claims (6)
1. commercial gas-fired stove control system, said commercial gas-fired stove comprises and is used for blower fan that the residing burner hearth of said commercial gas-fired stove is purged and the igniter that is used to light flame, it is characterized in that: said commercial gas-fired stove control system comprises
The big fire magnetic valve is used to open and cuts out the big fire source of the gas;
Seedling thermoelectricity magnet valve is used to open and closes seedling internal heat source;
Gas pressure switch, whether the working pressure that is used to detect combustion gas is in the scope of regulation;
The gas leakage detector is used for whether having gas leakage around the checkout equipment;
Cyclelog; The components and parts such as said big fire magnetic valve, said seedling thermoelectricity magnet valve, said gas pressure switch and said gas leakage detector and the said blower fan and the said igniter of said commercial gas-fired stove that are used for said control system are controlled according to the preset program of said cyclelog, and components and parts such as flame and each said big fire magnetic valve of the present invention, said seedling thermoelectricity magnet valve, said igniter, said gas pressure switch and said gas leakage detector are monitored.
2. commercial gas-fired stove according to claim 1 is controlled system, and it is characterized in that: said igniter is an electronic type high-voltage pulse igniter.
3. commercial gas-fired stove according to claim 1 is controlled system, and it is characterized in that: said big fire magnetic valve, said seedling thermoelectricity magnet valve are normally closed solenoid valve.
4. commercial gas-fired stove according to claim 1 control system is characterized in that: said preset program does,
At first, energized, said cyclelog sends to said blower fan and purges instruction, and said burner hearth is carried out preceding purging;
The second, igniting, said cyclelog sends firing command to seedling thermoelectricity magnet valve, opens seedling thermoelectricity magnet valve and lights a fire;
The 3rd, detect the flame that said igniting produces, said cyclelog detects said flame; If said flame is the seedling fire, said cyclelog sends instruction to said big fire magnetic valve, opens said big fire magnetic valve; Said commercial gas-fired stove is normally moved, if do not produce said flame, then said cyclelog sends out code to said seedling thermoelectricity magnet valve, said big fire magnetic valve; Close said seedling thermoelectricity magnet valve and said big fire magnetic valve, send alarm signal;
The 4th, during shutdown, said cyclelog sends the post-purge instruction to said blower fan, and said blower fan carries out post-purge to said burner hearth.
5. commercial gas-fired stove according to claim 4 is controlled system; It is characterized in that: said cyclelog is monitored said each components and parts of said flame and said control system; When said cyclelog unusual circumstance; Immediately close combustion gas and send alarm signal, and show trouble location.
6. commercial gas-fired stove according to claim 5 is controlled system, it is characterized in that: said alarm signal is that voice signal and code show signal.
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| CN2012100487812A CN102563722A (en) | 2012-02-28 | 2012-02-28 | Control system for commercial gas cooker |
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| CN2012100487812A CN102563722A (en) | 2012-02-28 | 2012-02-28 | Control system for commercial gas cooker |
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| CN103900121A (en) * | 2014-03-06 | 2014-07-02 | 宁波方太厨具有限公司 | Self-inspection method of active air inlet gas stove |
| CN104566516A (en) * | 2013-10-16 | 2015-04-29 | 光宝电子(广州)有限公司 | Gas stove with flame detection function |
| CN104990081A (en) * | 2015-07-16 | 2015-10-21 | 周通 | Gas emptier for commercial cooking utensil burner |
| CN106016765A (en) * | 2016-07-29 | 2016-10-12 | 芜湖美的厨卫电器制造有限公司 | Gas water heater and safety protection device thereof |
| CN106152171A (en) * | 2016-08-16 | 2016-11-23 | 南京英达公路养护车制造有限公司 | Burner operation control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104566516A (en) * | 2013-10-16 | 2015-04-29 | 光宝电子(广州)有限公司 | Gas stove with flame detection function |
| CN103900121A (en) * | 2014-03-06 | 2014-07-02 | 宁波方太厨具有限公司 | Self-inspection method of active air inlet gas stove |
| CN104990081A (en) * | 2015-07-16 | 2015-10-21 | 周通 | Gas emptier for commercial cooking utensil burner |
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| CN106225024A (en) * | 2016-08-26 | 2016-12-14 | 陈妮娜 | A kind of method of controlling security of methane cooker |
| CN106287847A (en) * | 2016-08-26 | 2017-01-04 | 陈妮娜 | A kind of methane cooker Iganition control system |
| CN106949504A (en) * | 2017-05-04 | 2017-07-14 | 济南九棵树新能源科技有限公司 | A kind of automatic ignition alcohol-based fuel vortex stove |
| CN108506973A (en) * | 2018-04-12 | 2018-09-07 | 无锡市启山林科技有限公司 | Commercial kitchen tools gas ignition safety control system and its control method |
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Application publication date: 20120711 |