CN101586818A - Protection device for automatic ignition and brennschluss of commercial gas furnace - Google Patents
Protection device for automatic ignition and brennschluss of commercial gas furnace Download PDFInfo
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- CN101586818A CN101586818A CNA2009100404377A CN200910040437A CN101586818A CN 101586818 A CN101586818 A CN 101586818A CN A2009100404377 A CNA2009100404377 A CN A2009100404377A CN 200910040437 A CN200910040437 A CN 200910040437A CN 101586818 A CN101586818 A CN 101586818A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Abstract
The invention discloses a protection device for automatic ignition and brennschluss of a commercial gas furnace, capable of overcoming unfavorable elements of high temperature, dampness, gas, large popple of air mixing ratio and the like to implement a safe, highly effective and automatic ignition, when a burner is burning out, it is capable of cutting off a fuel gas channel to implement a safe brennschluss protection, at the same time, there is not a fuel gas mother fire, so as to implement an economization and environment protection, and operation is convenient. Therefore, a main controller locating in a controller is connected with a continuous high-frequency high-pressure ignitor and a flame ion detector electrically and respectively, a detection end of the flame ion detector is connected with one arm of a high-pressure occurring end of the continuous high-frequency high-pressure ignitor, two output ends of the continuous high-frequency high-pressure ignitor are connected with two fulcrum indian clubs through two ignition and flame detection interfaces electrically and respectively, a gas electromagnetic valve interface and a switch interface locating in the controller are connected with the gas electromagnetic valve and the switch electrically and respectively.
Description
Technical field
The present invention relates to the Gas controller field, particularly a kind of commercial combustion furnace is igniting and flame-out protection device automatically.
Background technology
The characteristics of commercial gas furnace are to use the air blast forced burning, and volume is big, and combustion power is big, work under bad environment.The furnace diameter of commercial gas furnace is between 400mm to 1200mm, and its combustion power is between 40kw to 150kw, and flame temperature surpasses 1200 ℃, and fire box temperature surpasses 800 ℃, and the rear furnace body hull-skin temperature that works long hours reaches 200 ℃.During igniting, surpass 1-2 second in maximum and firing delay, will cause detonation as throughput.Commercial gas furnace be that a relatively independent air supply system is arranged in commercial kitchen with the gas condition, the number of the commercial gas furnace of working in same gas burning system does not wait to tens from several, when work gas furnace quantity after a little while, gas consumption is little, gaseous-pressure is very high; When the work of whole gas furnace, gas consumption is big, and gaseous-pressure can be very low, so the gaseous-pressure fluctuation is sizable, and the ratio of wave amplitude can reach several times sometimes.The air feed condition of commercial gas furnace also plays pendulum, except be bound to cause the difficult accent of air quantity because of several the shared high-power blowers of gas furnace, even if the separate unit gas furnace adopts independent blower fan and adopts wind, gas linkage, its wind supply quantity also can not change with gas quantity synchronously owing to the gaseous-pressure fluctuation.Therefore the combustion gas of commercial gas furnace, the fluctuation range of air mixing ratio are sizable.The service condition of commercial gas furnace is abominable, and when work, particularly Chinese meal stir-fry dish cooked in a small wok, meaning the food is prepared with special care stove has water pouring or foreign material and falls on it; When quitting work, cleaning water can spatter around burner hearth and furnace wall, humid environment, and above situation all can make water or foreign material directly enter in the burner, loses efficacy when causing gas furnace work.
Because the condition of work of commercial gas furnace is abominable relatively, in the prior art, commercial gas furnace all adopts when lighting a fire lights female fire earlier, and then the mode of lighting main burner.When using manual ignition, lighting female fire is to use the manual ignition rifle; When lighting a fire automatically, then be pulse firing mode, light female fire back and detect female fiery flame, remove a burner with female fire again with the ion detection mode with general household gas apparatus.Light convenience and the security that female fire no doubt has a strong impact on use with manual mode, but light female fire automatically, then because general pulse firing energy has only the burnt level of milli, ignition difficulties with the pulse firing mode.And female fire of commercial gas furnace need make its flame deliver to the quirk of main burner and draws flame master fire, so, utilize the blast air inducing of air blast to carry out forced burning with regard to the means that must adopt and main burner is same, promptly the flame pressure of female fire can not be less than the blast of main fire.Because the fluctuation of aforesaid commercial gas furnace combustion gas, air mixing ratio and gaseous-pressure is too big, female fire occurs can not being lighted or stopping working in the course of work through regular meeting.Female fire extinguishes in the course of the work, and the control system of gas furnace does not have flame-out protection device, and this just is easy to big fire to occur and extinguishes the security incident that combustion gas pours out simultaneously; As adopt and light automatically that mother fights and realize the safety shutdown protection of main fire then can causing main fire to extinguish simultaneously, the gas furnace operational failure again owing to female fire extinguishes by the flame that detects female fire.In the prior art mostly employing light mother automatically and fight and carry out the mode of blowout protection; this mode is except that existing above-mentioned problem; do not detect main flame owing to only detect female flame; can occur when pilot flame can not arrive the quirk of main burning point; just having a large amount of combustion gas when main burner starts gushes out; and during the main burner accident extinguishing, main burner also has a large amount of combustion gas to be gushed out, and both of these case all can cause the danger of catching fire, exploding.Adopt female fire to light main burner, also will overcome the commercial steam stove that burns is in the burner hearth of the condition of high temperature, the water that might take place drenches or foreign material drop, and problem such as hearth outer wall high temperature, humidity, like this, gas furnace could be worked reliably, and is apparent, also fails to overcome the problems referred to above with prior art.The applicant once was that the technology that 200620060483.5 name is called " ignition device that a kind of pressure uses for the wind gas burner " is used for commercial gas furnace with the patent No., solved high temperature in the burner hearth, water drenches and foreign material drop and the problem of furnace outer wall high temperature humidity, but have potential safety hazard owing to failing to detect main fire, and ignition device is excessive because of combustion gas, air mixing ratio and gaseous-pressure fluctuation; Can occur the ignition device difficult point in use and catch fire, or it is easily flame-out and make the defective of gas furnace operational failure to light the back, fail fundamentally to solve the ignition problem of commercial gas furnace.Also there are the following problems to use female fire, and promptly often about 2kw, the waste gas of being discharged often exceeds environmental protection standard to the flame power of female fire, thereby both wastes energy, also not environmental protection.
Be used for the safety shutdown protection of commercial gas furnace; also useful thermocouple is kept power mode as the magnetic valve on the blast tube; promptly after the gas furnace point catches fire; the thermocouple that is positioned at flame zone provides electric current, the voltage signal coil windings to magnetic valve; in case fray-out of flame or other reasons make thermocouple not reach flame; after thermocouple lost electromotive force, magnetic valve came off and cuts out blast tube, realized flame-out safeguard protection.This kind method can guarantee that main burner closes magnetic valve after accident is extinguished, but still have following three problems: the one since thermocouple will be cooled to uniform temperature the time its electromotive force just can be low to moderate and make magnetic valve take off valve, this time is more than 10 seconds, can cause in this 10 second time has a large amount of gas leakages, thereby has the danger of blast; The 2nd, the thermal-flame of main burner makes the life-span of thermocouple greatly reduce, and about about 3 months, so its maintenance cost is very high; The 3rd, when igniting, must after being heated, thermocouple produce and just can let go after enough thermoelectrical potentials make the magnetic valve adhesive with the tight electromagnetic valve switch of the hand several seconds, and very inconvenient.
In the prior art; be not useful on yet on the commercial gas furnace and can mother fight and to light a fire automatically safely; magnetic valve when the main burner accident extinguishing on automatic self-closing gas passage within 1 second, thereby the automatic igniting safety shutdown protective device of cut-out blast tube.Up to the present; though the thermic load of household gas apparatus is less relatively; but put teeth in the protection of automatic igniting safety shutdown, on the contrary on the commercial combustion gas tool of high-power burning owing to technical reason still fails to realize igniting automatically and flame-out safeguard protection, thereby security incident often appears.
Summary of the invention
The object of the present invention is to provide a kind of commercial gas furnace igniting and flame-out protection device automatically; the difficulty that unfavorable factors such as this device can overcome that Yin Gaowen in the commercial gas furnace, humidity, gas flow are big, gaseous-pressure and combustion gas, the fluctuation of air mixing ratio are big cause and realize safety, efficient, igniting automatically; when the burner accident extinguishing; can in 1 second, initiatively cut off blast tube; the implement security blowout protection; also without the female fire of combustion gas, accomplish energy-conserving and environment-protective simultaneously, and easy to operate.
Technical solution proposed by the invention is such: a kind of commercial gas furnace is igniting and flame-out protection device automatically; described commercial gas furnace comprises guidance panel; manual gas control valve; burner; body of heater; described commercial gas furnace is lighted a fire automatically and flame-out protection device comprises switch; gas electromagnetic valve; controller; this controller comprises master controller; continous way high-frequency and high-voltage igniter; flame ionic detector also has switch interface respectively; igniting and flame detect interface; the gas electromagnetic valve interface; with two fire rodes that are used to light a fire and flame detects; master controller in the described controller is electrically connected with continous way high-frequency and high-voltage igniter and flame ionic detector respectively; the test side of flame ionic detector is connected with the arm that end takes place the high pressure of continous way high-frequency and high-voltage igniter; two outputs of continous way high-frequency and high-voltage igniter detect interface by described two igniting and flame and are electrically connected with described two fire rodes respectively, and gas electromagnetic valve interface and switch interface in the controller are electrically connected with gas electromagnetic valve and switch respectively.
Described switch is mechanical switch or magnetic control near switch or photoelectricity near switch.Manual gas control valve on this switch and the commercial gas furnace guidance panel is connected.Gas electromagnetic valve adopts strong suction formula magnetic valve or gas flow control valve.Described fire rod center material adopts the high-temperature oxidation resistant steel, and the root of fire rod wraps up and do electric insulation by the ceramic body of high alumina content.Two fire rod combinations are mounted to an integral body, and the electric clearance between the metallic object tip of two fire rodes is 3-8mm.The fire rod root is installed on outside the body of heater of commercial gas furnace, the metallic object of fire rod and the ceramic body that is wrapped up pass body of heater, and fire rod metallic object tip portion is arranged in the quirk of described burner.Described fire rod root also can be installed in described burner bottom, and the metallic object of fire rod and the ceramic body that is wrapped up pass burner wall, and the metallic object tip portion of fire rod is arranged in the quirk of described burner.
Above-mentioned continous way high-frequency and high-voltage igniter can produce tens KHz and up to several ten thousand the volt high-tension currents, power is between 30-60W, diameter be can produce at fire rod metal tip place and 10mm, the continuous ionization flame of temperature surpassed above 1500 ℃ greater than 4mm, extreme length, can directly light the flammable liquid of diesel oil type, therefore, this ionization flame can not extinguish because of high wind directly blows, and this traditionally igniter is called the diesel oil igniter again.On stirring commercial gas furnace guidance panel manually during the handle of gas control valve, send Continuity signal with the switch of handle interlock, after master controller in the controller is received instruction, providing electric current to make it open to gas electromagnetic valve when, also instruct the continous way high-frequency and high-voltage generator to send high-frequency high-voltage current, in the burner quirk of commercial gas furnace, sending ionization flame by fire rod between fire rod metallic object tip, because this ionization flame is not subjected to gaseous-pressure and combustion gas, air mixes when the combustion gas of ejection at a high speed from the burner, the influence of air Mixture cooling effect is directly the air of burner ejection, the combustion gas mixing body is lighted.Gas electromagnetic valve can be strong suction formula magnetic valve or gas flow magnetic valve, when commercial gas furnace is not provided with the device that air mass flow changes automatically with gas flow, adopts strong suction formula magnetic valve; When commercial gas furnace is provided with the device that air mass flow automatically changes with gas flow, adopt the gas flow control valve.When adopting the gas flow control valve, gas electromagnetic valve can reduce valve port opening during commercial igniting, promptly gas quantity is suitably reduced, thus the detonation risk when having reduced igniting.When the combustion gas of burner ejection is lighted, flame ionic detector detects the flame ion electric current by fire rod, feed back to master controller, master controller instruction continous way high-frequency and high-voltage igniter quits work, and the gas electromagnetic valve valve port is opened to maximum opening, lights a fire successfully, at this moment, by the handle of manual gas control valve, can regulate gas flow, enter operate as normal.During work; if burner accident extinguishing; when flame ionic detector detects less than the flame ion electric current; controller was at 0.5 second electric current to 1 second internal cutting off gas electromagnetic valve, and gas electromagnetic valve is closed immediately, cut off blast tube; enter the auto extinguishing guard mode; at this moment, only closed manual gas control valve, just can restart.
The present invention passes body of heater by fire rod, in burner hearth, above burner, stretch into again and produce ionization flame in the burner quirk, adopt continous way high-frequency and high-voltage igniter directly to light combustion gas, not drenched by commercial combustion furnace high temperature, humidity, water or foreign material fall and high velocity air directly blows, gaseous-pressure and combustion gas, influence that the fluctuation of air mixing ratio is big, all combustion gas of ignition combustion device fast reach and the identical effect of female fiery naked light igniting.Because the ceramics insulator that stretches into the metal part of the fire rod in the burner hearth and be used for fixing fire rod and play insulating effect is exotic material, can continuous operation and big damage can not occur, its durable degree can be to work more than 2 years.As unexpected flame-out in the work, flame ionic detector can detect signal immediately and close gas electromagnetic valve simultaneously, plays the blowout protection effect.This automatic ignition device need not be female fiery, can reduce the power consumption of female fire and the waste gas that imperfect combustion produced thereof.Stir the handle of manual gas control valve, can light main burner automatically, improved the automatic operant level of commercial gas furnace.When the present invention was used on the burner of large stove etc., this moment was not owing to have a large amount of foreign material or water falls pouring on burner, thus also can adopt fire rod to pass the burner bottom, and be introduced into the mode in the burner quirk.
Compared with prior art, the present invention has following remarkable result:
(1) need not light a fire by female fire, reach the effect of energy-saving and environmental protection.
(2) mode of using ionization flame to stretch into the burner quirk is lighted a fire, and can obtain the same effect of lighting a fire with female fire, and the igniting and the course of work are not subjected to the influence of the residing adverse circumstances of commercial gas furnace, can regulate gas quantity automatically in right amount, can not produce the danger of detonation.
(3) reliable operation does not have significantly easily by the consumable accessory of temperatures involved in the burner hearth, thereby reliable operation, long service life.
(4) can in 0.5 second to 1 second, cut off combustion gas immediately during accident extinguishing, safe to use.
Only need when (5) working or lighting a fire get final product with the handle of controlling the manual gas control valve that is installed on commercial gas furnace guidance panel, easy to operate, the automaticity height.
The present invention is mainly used in powerful commercial gas furnace.
Description of drawings
Fig. 1 is the work electricity functional-block diagram of the automatic igniting, extinguishing protective device of commercial gas furnace of the embodiment of the invention 1.
Fig. 2 is that the commercial gas furnace of the embodiment of the invention 1 is lighted a fire automatically and flame-out protection device is removed behaviour
The master who does behind the panel looks schematic diagram.
Fig. 3 is the enlarged diagram of overlooking of Fig. 2.
Fig. 4 is the enlarged diagram of analysing and observe of Fig. 3 A-A.
Fig. 5 is that the embodiment of the invention 3 described fire rodes are introduced into the structure cross-sectional schematic the quirk from the burner bottom.
The specific embodiment
By following embodiment the present invention is further elaborated.
Referring to Fig. 1; Fig. 2; Fig. 3; shown in Figure 4; in automatic igniting of the commercial gas furnace of one embodiment of the invention and the flame-out protection device; the commercial combustion gas stove comprises guidance panel 7; manual gas control valve 6; burner 5-3; body of heater 5; flame retardant coating 5-1; burner hearth 5-2; quirk 5-4; commercial gas furnace is lighted a fire automatically and flame-out protection device comprises switch 1; gas electromagnetic valve 2; controller 3; this controller 3 comprises master controller 3-1; continous way high-frequency and high-voltage igniter 3-2; flame ionic detector 3-3; switch interface 3-4; 3-5; igniting and flame detect interface 3-7; 3-8; gas electromagnetic valve interface 3-6; two fire rod 4-1; 4-2 and root are used for fixing and do simultaneously the ceramics insulator 4-3 of electric insulation; master controller 3-1 in the controller 3 is electrically connected with continous way high-frequency and high-voltage igniter 3-2 and flame ionic detector 3-3 respectively; the test side of flame ionic detector 3-3 is connected with the arm that end takes place the high pressure of continous way high-frequency and high-voltage igniter 3-2; two outputs of continous way high-frequency and high-voltage igniter 3-2 detect interface 3-7 by two igniting and flame; 3-8 respectively with two fire rod 4-1; 4-2 is electrically connected, gas electromagnetic valve interface 3-6 and switch interface 3-4 in the controller 3; 3-5 is electrically connected with gas electromagnetic valve 2 and switch 1 respectively.
Referring to Fig. 2, shown in Figure 3, combustion gas enters burner 5-3 through gas electromagnetic valve 2 and body of heater 5 bottoms from fuel gas inlet 8 again through manual gas control valve 6, the compressed air that provides by air blast from compressed air inlet 9 enter with combustion gas mixing after from the quirk 5-4 ejection of burner 5-3.The gas electromagnetic valve 2 of present embodiment is selected strong suction formula magnetic valve for use.Fire rod 4-1,4-2 pass body of heater 5, flame retardant coating 5-1 and burner hearth 5-2, its metal tip reaches among the quirk 5-4 at burner 5-3 center, and it is the high-temperature oxidation resistant steel Cr that 5mm * 5mm was square and did not hold the about 50mm of bending that the central metal of fire rod 4-1,4-2 partly adopts sectional area
25Cl
5Alloy, can be anti-high temperature more than 1200 ℃, it is in aggregates that the insulator 4-3 of its root adopts the refractory ceramics that contains 95% aluminium oxide and fire rod 4-1,4-2 to install, this pottery can be anti-high temperature more than 1300 ℃.Fire rod 4-1,4-2 are fixed on the flame retardant coating 5-1 of body of heater 5 by ceramics insulator 4-3 as shown in Figure 3, Figure 4, pass in the burner hearth 5-2 and above the burner 5-3, fire rod 4-1, the about 50mm of 4-2 terminal part place are bent into 90 ° and both respectively and are 30 ° of angles and stretch in the quirk 5-4, and the electric clearance between the least significant end of fire rod 4-1,4-2 is 4～6mm.Because fire rod 4-1,4-2 stretch into the quirk 5-4 from burner 5-3 face, directly in combustion gas and passage that air just mixes.Continous way high-frequency and high-voltage igniter 3-2 reaches more than 1500 ℃ in the ionization flame temperature of about 40W power that the metal tip of fire rod 4-1,4-2 produces, thereby the influence that can not be subjected to that the pouring of high velocity air and water, foreign material fall etc.Even,, just can be lighted as long as meet the primary condition of fuel gas buring so cause mixing ratio to differ greatly because of gaseous-pressure and air quantity influence from the air of the quirk 5-4 of burner 5-3 ejection, fuel gas mixture.Switch 1 adopts the Hall element of magnetic control in the present embodiment, be installed on the panel 7, equally, be installed on the handle 6-1 of the manual gas control valve 6 on the panel 7 magnet 6-2 also is installed, after handle 6-1 turns to certain angle, switch 1 sends enabling signal, the master controller 3-1 of controller 3 provides electric current and instructs continous way high-frequency and high-voltage igniter 3-2 work to strong suction formula magnetic valve 2 simultaneously, strong suction formula magnetic valve 2 is opened, fire rod 4-1, ionization flame is sent at the tip of 4-2, meanwhile, the combustion gas that flows into from fuel gas inlet 8 enters burner 5-3 and the quirk 5-4 through strong suction formula magnetic valve 2 and manual gas control valve 6 and is ionized flame ignition.After the flame ionic detector 3-3 in the controller 3 detects the gas current of being passed back by fire rod 4-1,4-2, this moment, continous way high-frequency and high-voltage igniter 3-2 quit work, controller 3 enters normal operating conditions, regulates the flame size that the handle 6-1 of manual gas valve 6 can regulate commercial gas furnace.Switch 1 is installed in needs behind the handle 6-1 swing certain angle just the position that can be driven by magnet 6-2, is to make manual gas control valve 6 just open strong suction formula magnetic valve 2 when certain valve port opening, so just can not occur ignition difficulties because of gas quantity is too small.As long as the handle 6-1 of manual gas control valve 6 is put back initial position, gas furnace could be closed automatically, afterwards, and can repeated priming.
Present embodiment is on the basis of embodiment 1, and gas electromagnetic valve 2 and controller 3 are assembled into an integral body.In the present embodiment, gas electromagnetic valve 2 is selected the gas flow control valve for use, when when igniting gas flow control valve 2 adopt and change valve port opening by the control coil electric current and regulate gas flow, the valve port opening of gas flow control valve 2 is controlled its gas flow and is about between the peaked 50%-80%.Fuel gas mixture is passed flame retardant coating 5-1, burner hearth 5-2 and is stretched into the ionization flame ignition of the metal tip generation of fire rod 4-1,4-2 in the quirk 5-4 above the burner 5-3 again in the quirk 5-4 of burner 5-3.After the flame ionic detector 3-3 in the controller 3 detects the gas current of being passed back by fire rod 4-2, the electric current that master controller 3-1 provides makes the valve port opening of gas flow control valve 2 open to maximum, regulates the flame size that the handle 6-1 of manual gas control valve 6 can regulate commercial gas furnace this moment.
Present embodiment is that fire rod 4-1,4-2 are stretched to specific embodiments the quirk 5-4 from burner 5-3 bottom.
Referring to shown in Figure 5, fire rod 4-1,4-2 pass burner 5-3 bottom interior wall through ceramics insulator 4-3 and are also fixed, fire rod 4-1,4-2 from the metallic object tip not the about 20mm in end place be bent into 90 ° respectively, the gap between its least significant end is the 4-6mm face, is arranged in quirk 5-4.
Except that above-mentioned, the remainder of present embodiment is identical with embodiment 1 or embodiment 2.
Claims (8)
1; a kind of commercial gas furnace is igniting and flame-out protection device automatically; described commercial gas furnace comprises guidance panel; manual gas control valve; burner; body of heater; described commercial gas furnace is lighted a fire automatically and flame-out protection device comprises switch; gas electromagnetic valve; controller; this controller comprises master controller; continous way high-frequency and high-voltage igniter; flame ionic detector also has switch interface respectively; igniting and flame detect interface; the gas electromagnetic valve interface; with two fire rodes that are used to light a fire and flame detects; it is characterized in that: the master controller in the described controller is electrically connected with continous way high-frequency and high-voltage igniter and flame ionic detector respectively; the test side of flame ionic detector is connected with the arm that end takes place the high pressure of continous way high-frequency and high-voltage igniter; two outputs of continous way high-frequency and high-voltage igniter detect interface by described two igniting and flame and are electrically connected with described two fire rodes respectively, and gas electromagnetic valve interface and switch interface in the controller are electrically connected with gas electromagnetic valve and switch respectively.
2, automatically igniting and flame-out protection device of commercial gas furnace according to claim 1 is characterized in that: described switch is mechanical switch or magnetic control near switch or photoelectricity near switch.
3, commercial gas furnace according to claim 1 is lighted a fire and flame-out protection device automatically, and it is characterized in that: the manual gas control valve on described switch and the commercial gas furnace guidance panel is connected.
4, commercial gas furnace according to claim 1 is lighted a fire and flame-out protection device automatically, and it is characterized in that: described gas electromagnetic valve is strong suction formula magnetic valve or gas flow control valve.
5, commercial gas furnace according to claim 1 is lighted a fire and flame-out protection device automatically, and it is characterized in that: described fire rod center material is the high-temperature oxidation resistant steel, and the root of fire rod wraps up and do electric insulation by the ceramic body of high alumina content.
6, commercial gas furnace according to claim 1 is lighted a fire and flame-out protection device automatically, it is characterized in that: described two fire rodes combination is mounted to an integral body, and the electric clearance between the metallic object tip of two fire rodes is 3-8mm.
7, commercial gas furnace according to claim 1 is lighted a fire and flame-out protection device automatically; it is characterized in that: described fire rod root is installed on outside the body of heater of commercial gas furnace; the metallic object of fire rod and the ceramic body that is wrapped up pass body of heater, and the metallic object tip portion of fire rod is arranged in the quirk of described burner.
8, commercial gas furnace according to claim 1 is lighted a fire and flame-out protection device automatically; it is characterized in that: described fire rod root is installed in described burner bottom; the metallic object of fire rod and the ceramic body that is wrapped up pass burner wall, and the metallic object tip portion of fire rod is arranged in the quirk of described burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100404377A CN101586818A (en) | 2009-06-15 | 2009-06-15 | Protection device for automatic ignition and brennschluss of commercial gas furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100404377A CN101586818A (en) | 2009-06-15 | 2009-06-15 | Protection device for automatic ignition and brennschluss of commercial gas furnace |
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| CN101586818A true CN101586818A (en) | 2009-11-25 |
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| CNA2009100404377A Pending CN101586818A (en) | 2009-06-15 | 2009-06-15 | Protection device for automatic ignition and brennschluss of commercial gas furnace |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103576720A (en) * | 2012-07-26 | 2014-02-12 | 宁波市比利仕燃气科技有限公司 | Low-consumption control system of gas deep fryer |
| CN107388295A (en) * | 2017-08-25 | 2017-11-24 | 广东世望厨房设备有限公司 | A kind of environmental protection and energy saving low noise fries stove and its control system |
| CN107389777A (en) * | 2017-07-31 | 2017-11-24 | 成都凯圣捷科技有限公司 | Explosion-proof hydrogen flames F exiting ID detectors |
-
2009
- 2009-06-15 CN CNA2009100404377A patent/CN101586818A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103576720A (en) * | 2012-07-26 | 2014-02-12 | 宁波市比利仕燃气科技有限公司 | Low-consumption control system of gas deep fryer |
| CN103576720B (en) * | 2012-07-26 | 2016-08-03 | 宁波市比利仕燃气科技有限公司 | Combustion gas deep fryer power-consumption control system |
| CN107389777A (en) * | 2017-07-31 | 2017-11-24 | 成都凯圣捷科技有限公司 | Explosion-proof hydrogen flames F exiting ID detectors |
| CN107388295A (en) * | 2017-08-25 | 2017-11-24 | 广东世望厨房设备有限公司 | A kind of environmental protection and energy saving low noise fries stove and its control system |
| CN107388295B (en) * | 2017-08-25 | 2023-11-14 | 广东世望厨房设备有限公司 | Environment-friendly energy-saving low-noise stir-frying furnace and control system thereof |
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Application publication date: 20091125 |