CN205878256U - Self -adaptation gas -cooker - Google Patents
Self -adaptation gas -cooker Download PDFInfo
- Publication number
- CN205878256U CN205878256U CN201620254208.0U CN201620254208U CN205878256U CN 205878256 U CN205878256 U CN 205878256U CN 201620254208 U CN201620254208 U CN 201620254208U CN 205878256 U CN205878256 U CN 205878256U
- Authority
- CN
- China
- Prior art keywords
- gas
- ion current
- feedback pin
- current feedback
- natural gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Control Of Combustion (AREA)
Abstract
The utility model provides a self -adaptation gas -cooker, including combustor 1, control circuit module 5, gas proportional valve 3, be equipped with out fire hole 2 on the combustor 1, gas proportional valve 3 is connected with the control circuit module 5 electricity, still include liquefied gas ionic current feedback pin 11, natural gas ionic current feedback pin 12, flame ion current detection unit 51, liquefied gas ionic current feedback pin 11, natural gas ionic current feedback pin 12 installs on the combustor and its public connectin end passes through flame ionic current detection unit 51 and the control circuit module 5 electricity is connected, control circuit module 5 is according to liquefied gas ionic current feedback pin 11, the gas proportional valve 3 aperture is adjusted to the total of the ionic current value that natural gas ionic current feedback pin 12 detected, when the air supply between the natural gas and the liquefied gas during interconversion, gas -cooker ability automatically regulated gas proportional valve 3's aperture, make the fine cooperation of air -fuel ratio ability, the burning load reaches the user's request, effectively improve user's quality of the life.
Description
Technical field
This utility model relates to a kind of gas-cooker with adaptation function.
Background technology
In existing household gas utensils, natural gas range can not be general with liquefied gas cooker, and can not carry out therebetween automatically switching uses, and when switching source of the gas, needs by using after manually changing nozzle, and it is big and complicated to change nozzle operation amount.For overcoming drawbacks described above, self adaptation gas-cooker is improved.
Summary of the invention
Technical problem to be solved in the utility model is to provide for a kind of gas-cooker with adaptation function, and it has the functional characteristics of conversion automatically between natural gas and liquefied gas.
This utility model solves its technical problem and the technical scheme is that a kind of self adaptation gas-cooker, including burner, control circuit module, gas ratio valve, burner is provided with fire output hole, gas ratio valve electrically connects with control circuit module, also include that liquefied gas ion current feeds back pin, natural gas ion current feedback pin, flame ion current detecting unit, liquefied gas ion current feedback pin, natural gas ion current feedback pin installs on the burner and its public connecting end is electrically connected with control circuit module by flame ion current detecting unit, control circuit module feeds back pin according to liquefied gas ion current, the summation regulating gas proportioning valve aperture of the ionic current values that natural gas ion current feedback pin detects.
Described flame ion current detecting unit includes flame ion current input circuit, ac high-voltage produces circuit, exchange bleeder circuit, DC voltage divider circuit, filter circuit, pin is fed back with liquefied gas ion current in flame ion current input circuit one end, natural gas ion current feedback pin electrically connects, the flame ion current input circuit other end, ac high-voltage produces circuit and electrically connects with the input exchanging bleeder circuit respectively, the outfan of exchange bleeder circuit is electrically connected by the input of DC voltage divider circuit with filter circuit, the outfan of filter circuit electrically connects with control circuit module.
Described control circuit module includes MCU control unit, gas proportion valve regulation output circuit, and gas proportion valve regulation output circuit electrically connects with MCU control unit, gas ratio valve respectively.
Described burner is provided with feedback pin installing hole, and liquefied gas ion current feedback pin, natural gas ion current feedback pin are installed on the burner by feedback pin installing hole respectively.
Described fire output hole is interior ring fire fire output hole, and the distance between natural gas ion current feedback pin and fire output hole is less than the distance between liquefied gas ion current feedback pin and fire output hole.
The described distance between natural gas ion current feedback pin and fire output hole is than the little 2-4mm of distance between liquefied gas ion current feedback pin and fire output hole.
The described distance between natural gas ion current feedback pin and fire output hole is 1-5mm, and the corresponding distance between liquefied gas ion current feedback pin and fire output hole is 3-9mm.
The aperture of described gas ratio valve is adjustable as the natural gas aperture preset or default liquefied gas aperture.
nullThis utility model is produced beneficial effect compared with background technology: include that liquefied gas ion current feeds back pin owing to gas-cooker of the present utility model uses on the basis of prior art、Natural gas ion current feedback pin、Flame ion current detecting unit，Liquefied gas ion current feedback pin、The structure that natural gas ion current feedback pin is installed on the burner and its public connecting end is electrically connected with control circuit module by flame ion current detecting unit，If liquefied gas ion current feedback pin、When the value of the ion current summation that natural gas ion current feedback pin detects is not within the normal range that combustion of natural gas is preset，Then explanation source of the gas is converted into liquefied gas，And then the aperture of control circuit module regulating gas proportioning valve，The value making ion current summation reached in default liquefied gas normal range，When being converted into natural gas by liquefied gas，Method is identical.Therefore when source of the gas is mutually changed between natural gas and liquefied gas, gas stove energy is automatically adjusted the aperture of gas ratio valve, making air-fuel ratio to coordinate very well, burning load reaches user's request, is effectively improved the quality of the life of user.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the enlarged drawing of burner 1 in Fig. 1；
Fig. 3 is that the circuit of Fig. 1 connects block diagram；
Fig. 4 is the connection block diagram of Fig. 1 Flame ion current detector unit 51；
Fig. 5 is a kind of circuit connection diagram of Fig. 4；
Fig. 6 is control method flow chart of the present utility model.
Detailed description of the invention
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, the present embodiment includes burner 1, control circuit module 5, gas ratio valve 3, burner 1 is provided with fire output hole 2, gas ratio valve 3 electrically connects with control circuit module 5, also include that liquefied gas ion current feeds back pin 11, natural gas ion current feedback pin 12, flame ion current detecting unit 51, liquefied gas ion current feedback pin 11, natural gas ion current feedback pin 12 installs on the burner and its public connecting end is electrically connected with control circuit module 5 by flame ion current detecting unit 51, control circuit module 5 feeds back pin 11 according to liquefied gas ion current, summation regulating gas proportioning valve 3 aperture of the ionic current values that natural gas ion current feedback pin 12 detects.
Fuel gas buring produces heat energy, the electronics in neutral gas atoms is made to obtain enough energy, it is thus possible to overcome atomic nucleus that its gravitation becomes free electron, the most neutral atom is owing to losing part electronics thus positively charged, and this molecule making neutrality or atom release electronically form the process of cation and is called gas ionization.Now, if adding a DC electric field between flame and burner, making charged particle move along direction of an electric field, cation moves to cathode direction, and electronics and anion move to anode direction, will form ion current.
Owing under different fired states, the temperature of flame differs, flame temperature is the highest, in unit interval, in electric field, the charged particle of movement is the most, namely charged ion concentration is the biggest, electric current is the most obvious, and flame temperature is the lowest, and in the unit interval, in electric field, the charged particle of movement is the fewest, namely charged ion concentration is the least, and electric current is the most weak.
When air-fuel ratio is excessive, additional air can take away heat, can dilute charged ion concentration；When air-fuel ratio is too small, burning insufficient, combustion process fails to produce abundant charged particle.
Gas component in this utility model refers to composition and the content of combustion gas, and combustion gas component changes, it is also possible to is considered the change of source of the gas, i.e. source of the gas and is changed to liquefied gas by natural gas, or is changed to natural gas by liquefied gas.For self adaptation gas-cooker, when source of the gas changes, if gas ratio valve 3 can not be adjusted correspondingly, then combustion gas cannot realize effectively premix with air, will have adverse effect on burning.
In order to judge whether source of the gas is changed more accurately in this utility model, ionic current values scope when source of the gas is also converted to ionic current values scope during liquefied gas by natural gas by gas-cooker designer, liquefied gas is converted to natural gas is write as automatically controlled program and is input in control circuit module 5.The present embodiment has i.e. been preset in control circuit module 5 four ion current value ranges, ionic current values scope D3 when ionic current values scope D2 when ionic current values scope D1, natural gas are converted to liquefied gas when being respectively natural gas normal combustion, liquefied gas normal combustion, ionic current values scope D4 time liquefied gas is converted to natural gas, the summation of the ionic current values that above-mentioned four default ion current value ranges refer to liquefied gas ion current feedback pin 11, natural gas ion current feedback pin 12 detects.
Further, referring to accompanying drawing 4, accompanying drawing 5, described flame ion current detecting unit 51 includes flame ion current input circuit 511, ac high-voltage produces circuit 515, exchange bleeder circuit 512, DC voltage divider circuit 513, filter circuit 514, pin 11 is fed back with liquefied gas ion current in flame ion current input circuit 511 one end, natural gas ion current feedback pin 12 electrically connects, flame ion current input circuit 511 other end, exchange bleeder circuit 512 electrically connects with the input exchanging bleeder circuit 512 respectively, the outfan of exchange bleeder circuit 512 is electrically connected by the input of DC voltage divider circuit 513 with filter circuit 514, the outfan of filter circuit 514 electrically connects with control circuit module 5.
Referring to accompanying drawing 3, described control circuit module 5 includes MCU control unit, gas proportion valve regulation output circuit, and gas proportion valve regulation output circuit electrically connects with MCU control unit, gas ratio valve 3 respectively.When needs regulation flame ion electric current, MCU control unit is passed through gas proportion valve regulation output circuit by the signal of telecommunication to gas ratio valve 3, is adjusted the aperture of gas ratio valve 3.
I.e. control circuit module 5 can change air-fuel ratio by the speed of opening of regulating gas proportioning valve 3, so that in the range of the summation of the flame ion current value that liquefied gas ion current feeds back pin 11, natural gas ion current feedback pin 12 detects maintains D1, D3.
Described burner 1 header board is provided with feedback pin installing hole, and liquefied gas ion current feedback pin 11, natural gas ion current feedback pin 12 are arranged on burner 1 by feedback pin installing hole respectively.The ignition electrode of gas-cooker is also set on burner 1 header board, and three kinds of pins are arranged on burner 1 header board, neatly unify, it is simple to install.
The height at internal flame top when depending highly on combustion of natural gas of natural gas ion current feedback pin 12, its current value is the strongest, and the value of feedback drawn is stable；Liquefied gas ion current feedback pin 11 depend highly on natural gas moment when switching to liquefied gas, the height at the internal flame top of flame during flame height sudden change after-combustion.Burning relative to liquefied gas, the calorific value produced in unit are during combustion of natural gas is relatively low, and flame height is relatively low.
Described fire output hole 2 is interior ring fire fire output hole, and for the accuracy detected, the described distance between natural gas ion current feedback pin 12 and fire output hole 2 is than the little 2-4mm of distance between liquefied gas ion current feedback pin 11 and fire output hole 2.Specifically, the described distance between natural gas ion current feedback pin 12 and fire output hole 2 is 1-5mm, and the corresponding distance between liquefied gas ion current feedback pin 11 and fire output hole 2 is 3-9mm.As optimum embodiment, the described distance between natural gas ion current feedback pin 12 and fire output hole 2 is 3mm, and the corresponding distance between liquefied gas ion current feedback pin 11 and fire output hole 2 is 7mm.
Preferably, the aperture of described gas ratio valve 3 is adjustable as the natural gas aperture preset or default liquefied gas aperture, here default natural gas aperture refer to pre-set when source of the gas be natural gas, during gas-cooker normal combustion, the aperture of gas ratio valve 3 correspondence, preset liquefied gas aperture refer to pre-set when source of the gas be liquefied gas, during gas-cooker normal combustion, the aperture of gas ratio valve 3 correspondence.
The control method of a kind of self adaptation gas-cooker, comprises the steps:
1) the natural gas aperture of gas ratio valve 3 correspondence, liquefied gas aperture are preset, ionic current values summation scope D3 when ionic current values summation scope D2 when ionic current values summation scope D1, natural gas are converted to liquefied gas when presetting natural gas normal combustion, liquefied gas normal combustion, ionic current values summation scope D4 time liquefied gas is converted into natural gas；
2) starting, the aperture of gas ratio valve 3 is last use aperture or acquiescence natural gas aperture, then lights a fire, enters 3)；
3) flame has been detected whether, subsequently into 4 by liquefied gas ion current feedback pin 11, natural gas ion current feedback pin 12)；
4) if otherwise the explanation source of the gas of connection now is not correspond to the aperture of present gas ratio valve 3, light a fire unsuccessful, now control circuit module 5 switches the aperture of gas ratio valve 3, then 3 are reentered), source of the gas after switching is corresponding with the aperture of gas ratio valve 3, light a fire successfully, if then illustrating that the source of the gas now connected is corresponding with the aperture of gas ratio valve 3, light a fire successfully, liquefied gas ion current feedback pin 11, natural gas ion current feedback pin 12 detect flame ion current signal, in real time subsequently into 5)；
5) when the ionic flame current value summation that liquefied gas ion current feeds back pin 11, natural gas ion current feedback pin 12 detects is in the range of D1 or D3, illustrate that source of the gas is not changed in, need not the aperture of regulating gas proportioning valve 3, then reenter 4), until shutdown；When the ionic flame current value summation that liquefied gas ion current feeds back pin 11, natural gas ion current feedback pin 12 detects is in the range of D2, illustrate that source of the gas changes, the aperture of control circuit module 5 regulating gas proportioning valve 3, until ionic current values summation is in the range of D3, then 4 are reentered), until shutdown；When the ionic flame current value summation that liquefied gas ion current feeds back pin 11, natural gas ion current feedback pin 12 detects is in the range of D4, also explanation source of the gas changes, the aperture of control circuit module 5 regulating gas proportioning valve 3, until ionic current values summation is in the range of D1, then 4 are reentered), until shutdown.
The aperture step switching gas ratio valve 3 in described step 4) refers specifically to the following two kinds situation:
If the aperture of gas ratio valve 3 is natural gas aperture before igniting, then switch to liquefied gas aperture；If the aperture of gas ratio valve 3 is liquefied gas aperture before igniting, then switch to natural gas aperture.
During work, assume user last time is natural gas, then making last time to be finished the aperture of gas ratio valve when closing gas-cooker is the aperture being suitable for combustion of natural gas, assume user this time be liquefied gas, just gas-cooker is lighted a fire unsuccessful when just opening, control circuit module 5 perceives source of the gas and changes, the aperture of gas ratio valve 3 is switched to liquefied gas aperture by control circuit module 5, combustion gas is made again to mate with AIR Proportional, until lighting a fire successfully, the liquefied gas ion current feedback pin 11 that flame ion current detecting unit 51 detects, in the range of the summation of the ionic current values of natural gas ion current feedback pin 12 is in D3, realize normal combustion.
Assume user last time is liquefied gas, then making last time to be finished the aperture of gas ratio valve when closing gas-cooker is the aperture being suitable for liquefied gas burning, assume user this time be natural gas, just gas-cooker is lighted a fire unsuccessful when just opening, control circuit module 5 perceives source of the gas and changes, the aperture of gas ratio valve 3 is switched to natural gas aperture by control circuit module 5, combustion gas is made again to mate with AIR Proportional, until lighting a fire successfully, the liquefied gas ion current feedback pin 11 that flame ion current detecting unit 51 detects, in the range of the summation of the ionic current values of natural gas ion current feedback pin 12 is in D1, realize normal combustion.
nullIn gas-cooker combustion process，When source of the gas is natural gas，Natural gas ion current feedback pin 12 detects flame ion electric current，And liquefied gas ion current feedback pin 11 is not detected by ionic flame electric current，Now the flame ion current value that natural gas ion current feedback pin 12 detects constantly is passed to control circuit module 5 by flame ion current detecting unit 51，The actual value detected constantly is compared by control circuit module 5 with the D1 preset，If be detected that actual value burn in the range of D1，Then explanation combustion of natural gas is normal，It is not required to regulation，When source of the gas is converted to liquefied gas by natural gas，Natural gas ion current feedback pin 12、Liquefied gas ion current feedback pin 11 all detects flame ion electric current，If flame ion current detecting unit 51 pass to the summation of the ionic current values of control circuit module 5 in D2 time，Control circuit module 5 perceives source of the gas and changes，Control circuit module 5 outputs signal to gas ratio valve 3 and is adjusted，Combustion gas is made again to mate with AIR Proportional，Until the liquefied gas ion current feedback pin 11 that flame ion current detecting unit 51 detects、In the range of the summation of the ionic current values of natural gas ion current feedback pin 12 is in D3.
nullSame method，When source of the gas is liquefied gas，Liquefied gas ion current feedback pin 11 detects flame ion electric current，Simultaneously，The ionic flame electric current that natural gas ion current feedback pin 12 detects equally，Now natural gas ion current feedback pin 12 and liquefied gas ion current feedback pin 11 are constantly detected that flame ion current value passes to control circuit module 5 by flame ion current detecting unit 51，The actual value detected constantly is compared by control circuit module 5 with the D3 preset，If be detected that actual value burn in the range of D3，Then explanation combustion of natural gas is normal，It is not required to regulation，When source of the gas is converted to natural gas by liquefied gas，Flame ion current detecting unit 51 passes to the summation of the ionic current values of control circuit module 5 in the range of D4，Control circuit module 5 perceives source of the gas and changes，Control circuit module 5 outputs signal to gas ratio valve 3 and is adjusted，Combustion gas is made again to mate with AIR Proportional，Until the liquefied gas ion current feedback pin 11 that flame ion current detecting unit 51 detects、In the range of the summation of the ionic current values of natural gas ion current feedback pin 12 is in D1，Realize normal combustion.
This utility model is when source of the gas changes, and gas stove energy is automatically adjusted the aperture of gas ratio valve 3, fast automatic is adjusted air with combusted proportion, makes combustion gas and AIR Proportional adjust to new air-fuel ratio, and then ensures the normal use of gas-cooker.Gas-cooker of the present utility model can realize the automatic conversion between natural gas and liquefied gas, other plenum systems can be freely replaced by when a kind of plenum system can not use, ensure that user can enjoy enough heating in cold winter, be effectively improved the quality of the life of user.
Claims (8)
- null1. a self adaptation gas-cooker，Including burner (1)、Control circuit module (5)、Gas ratio valve (3)，Burner (1) is provided with fire output hole (2)，Gas ratio valve (3) electrically connects with control circuit module (5)，Characterized by further comprising liquefied gas ion current feedback pin (11)、Natural gas ion current feedback pin (12)、Flame ion current detecting unit (51)，Liquefied gas ion current feedback pin (11)、Natural gas ion current feedback pin (12) is installed on the burner and its public connecting end is electrically connected with control circuit module (5) by flame ion current detecting unit (51)，Control circuit module (5) is according to liquefied gas ion current feedback pin (11)、Summation regulating gas proportioning valve (3) aperture of the ionic current values that natural gas ion current feedback pin (12) detects.
- nullSelf adaptation gas-cooker the most according to claim 1，It is characterized in that described flame ion current detecting unit (51) includes flame ion current input circuit (511)、Ac high-voltage produces circuit (515)、Exchange bleeder circuit (512)、DC voltage divider circuit (513)、Filter circuit (514)，Flame ion current input circuit (511) one end and liquefied gas ion current feedback pin (11)、Natural gas ion current feedback pin (12) electrically connects，Flame ion current input circuit (511) other end、Ac high-voltage produces circuit (512) and electrically connects with the input exchanging bleeder circuit (512) respectively，The outfan of exchange bleeder circuit (512) is electrically connected by the input of DC voltage divider circuit (513) with filter circuit (514)，The outfan of filter circuit (514) electrically connects with control circuit module (5).
- Self adaptation gas-cooker the most according to claim 1 and 2, it is characterized in that described control circuit module (5) includes MCU control unit, gas proportion valve regulation output circuit, gas proportion valve regulation output circuit electrically connects with MCU control unit, gas ratio valve (3) respectively.
- Self adaptation gas-cooker the most according to claim 1 and 2, it is characterized in that described burner (1) is provided with feedback pin installing hole, liquefied gas ion current feedback pin (11), natural gas ion current feedback pin (12) are arranged on burner (1) by feedback pin installing hole respectively.
- Self adaptation gas-cooker the most according to claim 1 and 2, it is characterized in that described fire output hole (2) is interior ring fire fire output hole, the distance between natural gas ion current feedback pin (12) and fire output hole (2) is less than the distance between liquefied gas ion current feedback pin (11) and fire output hole (2).
- Self adaptation gas-cooker the most according to claim 5, it is characterised in that the described distance between natural gas ion current feedback pin (12) and fire output hole (2) is than the little 2-4mm of distance between liquefied gas ion current feedback pin (11) and fire output hole (2).
- Self adaptation gas-cooker the most according to claim 6, it is characterized in that the distance between described natural gas ion current feedback pin (12) and fire output hole (2) is 1-5mm, the corresponding distance between liquefied gas ion current feedback pin (11) and fire output hole (2) is 3-9mm.
- Self adaptation gas-cooker the most according to claim 1 and 2, it is characterised in that the aperture of described gas ratio valve (3) is adjustable as the natural gas aperture preset or default liquefied gas aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620254208.0U CN205878256U (en) | 2016-03-30 | 2016-03-30 | Self -adaptation gas -cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620254208.0U CN205878256U (en) | 2016-03-30 | 2016-03-30 | Self -adaptation gas -cooker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205878256U true CN205878256U (en) | 2017-01-11 |
Family
ID=57686394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620254208.0U Active CN205878256U (en) | 2016-03-30 | 2016-03-30 | Self -adaptation gas -cooker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205878256U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105650693A (en) * | 2016-03-30 | 2016-06-08 | 广东万和电气有限公司 | Self-adaptive gas stove and control method thereof |
| CN112944403A (en) * | 2021-02-25 | 2021-06-11 | 珠海格力电器股份有限公司 | Control method of gas stove and gas stove |
-
2016
- 2016-03-30 CN CN201620254208.0U patent/CN205878256U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105650693A (en) * | 2016-03-30 | 2016-06-08 | 广东万和电气有限公司 | Self-adaptive gas stove and control method thereof |
| CN112944403A (en) * | 2021-02-25 | 2021-06-11 | 珠海格力电器股份有限公司 | Control method of gas stove and gas stove |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204176923U (en) | Premixed type gas water heater for heating | |
| CN103615798A (en) | Fully premixed combustion gas heating water heater | |
| CN104296392B (en) | Gas water heating device capable of realizing self-adaptive fully-premixed combustion | |
| CN205505095U (en) | Automatic gas burner | |
| CN101576314B (en) | Ignition control system of tube furnace | |
| CN106766213B (en) | Ignition control method and device for gas wall-mounted boiler and gas wall-mounted boiler | |
| US9388989B2 (en) | Fireplace of combusting gasified liquid fuel | |
| CN205878256U (en) | Self -adaptation gas -cooker | |
| CN111917398B (en) | Flame ion signal detection circuit and control method thereof | |
| CN104422134A (en) | Gas water heater and control method and control system thereof | |
| CN203550182U (en) | Full premixed combustion gas heating water heater | |
| CN105650693A (en) | Self-adaptive gas stove and control method thereof | |
| CN202511322U (en) | Combustion control device for shuttle kiln | |
| CN205172761U (en) | Combustion -supporting system of engine | |
| CN204176926U (en) | The gas-fired water heater of self adaptation full premix combustion | |
| CN204797552U (en) | Dual -purpose cabinet that evaporates of gas electricity | |
| CN202546816U (en) | Integrated ignition control cabinet | |
| CN202074563U (en) | Burning heating device | |
| CN201412887Y (en) | Gas kitchen range | |
| CN104420105A (en) | Intelligent control fire hole for gas singeing machine | |
| CN2916302Y (en) | Control valve for heating device | |
| CN102538031B (en) | Fire igniting and extinguishing method and fire igniting and extinguishing system for commercial kitchen range | |
| CN203487378U (en) | Intelligent control burner for gas singeing machine | |
| CN207907295U (en) | A kind of cooking machine gas control system | |
| CN212057374U (en) | High-energy ignition device with adjustable spark frequency |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |