CN111256172A - Control method of gas stove and gas stove for realizing control method - Google Patents
Control method of gas stove and gas stove for realizing control method Download PDFInfo
- Publication number
- CN111256172A CN111256172A CN201811450618.2A CN201811450618A CN111256172A CN 111256172 A CN111256172 A CN 111256172A CN 201811450618 A CN201811450618 A CN 201811450618A CN 111256172 A CN111256172 A CN 111256172A
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- China
- Prior art keywords
- thermocouple
- fire
- gas stove
- protection hole
- fire protection
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/12—Arrangement or mounting of control or safety devices
- F24C3/126—Arrangement or mounting of control or safety devices on ranges
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/005—Regulating fuel supply using electrical or electromechanical means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/08—Arrangement or mounting of burners
- F24C3/085—Arrangement or mounting of burners on ranges
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2208/00—Control devices associated with burners
- F23D2208/10—Sensing devices
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Combustion (AREA)
Abstract
The invention relates to a control method of a gas stove, which comprises the steps of detecting and acquiring the current electromotive force U of a thermocouple near a fire protection hole of an inner ring fire cover; comparing the electromotive force U with an electromotive force threshold U0 corresponding to the fire protection hole in the fire state; if U is more than or equal to U0, further comparing the electromotive force U with an electromotive force threshold U1 corresponding to the pot, wherein U1 is more than U0; if U is more than or equal to U1, judging that a cooker is placed on the gas stove; if U is less than U1, it is judged that no pot is placed on the gas stove. The invention also relates to a gas stove which comprises a burner, wherein the burner comprises an inner ring fire cover and a thermocouple, a fire protection hole is formed in the ring wall of the inner ring fire cover, the thermocouple is arranged on one side of the inner ring fire cover, and the top of the thermocouple is positioned near the outlet of the fire protection hole. The control method of the gas stove and the gas stove can realize the detection of whether the cooker is placed or not only by finely adjusting the position of the thermocouple in the existing cooker.
Description
Technical Field
The invention relates to a control method of a gas stove and also relates to the gas stove.
Background
The pot detection method in the existing gas stove mainly adopts a pot detection induction sensor which extends out of the center of a burner or a pot bracket. When a cooker is placed on the cooker, the cooker induction sensor is detected to generate an induction signal under the pressure action of the cooker, and then the condition of placing the cooker is judged. When no pot is placed, the pot is judged to be absent. The invention discloses a Chinese patent 'Dry burning prevention fire control sensor' with the publication number of CN104296187B (application number of 201410567989.4), wherein the Dry burning prevention fire control sensor comprises a temperature detection device and a cooker state detection device, the temperature detection device is contacted with the bottom of a cooker on the cooker and is used for detecting the temperature of the bottom of the cooker on the cooker and outputting an electrical signal, the cooker state detection device is used for detecting whether the cooker is placed on the cooker and outputting a digital signal, the cooker state detection device is arranged on the temperature detection device, the temperature detection device comprises a movable cover, a thermistor, an elastic component, a hollow fixed shaft and a temperature detection lead, the fixed shaft is fixed on the furnace end of the cooker and is provided with a mounting boss, the thermistor is contacted with the top of the movable cover, one end of the elastic component props against the top of the movable cover, the other end of the elastic component is arranged on the mounting boss of the fixed shaft, the other end of the cookware state detection device penetrates through the hollow fixed shaft to be connected with an external circuit, the cookware state detection device comprises a magnetic control device, a magnet and a magnetic control lead, the magnet is arranged on the outer surface of the fixed shaft, the magnetic control device outputs an on or off digital signal according to the induction condition of a magnetic field of the magnet, one end of the magnetic control lead is electrically connected with the magnetic control device, and the other end of the magnetic control lead is connected with the external circuit. When a cooker is placed, a movable cover of the temperature detection device is pushed by the gravity of the cooker to move downwards, the magnetism eliminating block moves downwards along with a lead of the temperature detection device and enters a magnetic field generated by the magnet, the magnetic field generated by the magnet is weakened at the moment, the magnetic control switch senses the weakening of the magnetic field, the attraction force of the polar magnet and the N-pole magnet is increased, the pulling force of the elastic element is overcome, and therefore the magnetic control switch is closed and outputs a digital signal for sitting on the cooker to the controller through the magnetic control lead. The structure disclosed therein requires a hole in the burner at the time of installation, and the installation structure is complicated. Meanwhile, the cookware state detection device is in a burning part for a long time and has long-term high temperature, the working reliability of the lead and the elastic element part in the sensor is low, and the service life is short.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a method for controlling a gas stove, which detects whether a pot is placed or not by thermocouple data, in view of the above prior art.
The second technical problem to be solved by the present invention is to provide a gas stove capable of detecting whether a cooker is placed or not by only fine-tuning the thermocouple position in the existing cooker.
The technical scheme adopted by the invention for solving the first technical problem is as follows: a control method of a gas stove is characterized in that: detecting and obtaining the current electromotive force U of the thermocouple near the fire protection hole of the inner ring fire cover;
comparing the electromotive force U with an electromotive force threshold U0 corresponding to the fire protection hole in the fire state;
if U is more than or equal to U0, further comparing the electromotive force U with an electromotive force threshold U1 corresponding to the pot, wherein U1 is more than U0;
if U is more than or equal to U1, judging that a cooker is placed on the gas stove; if U is less than U1, it is judged that no pot is placed on the gas stove.
In order to avoid the situation that the burner burns for a long time under the condition that no pan is placed on the gas stove and ensure the use safety, after the situation that no pan is placed on the gas stove is judged, the duration time T of the non-placed pan is timed, then the T is compared with a set time threshold T0, and if the T is larger than or equal to T0, the fire is controlled to be turned off.
Safely, if U < U0, the gas stove is judged to be in a flameless state.
The technical scheme adopted by the invention for solving the second technical problem is as follows: the utility model provides a gas-cooker, includes the combustor, the combustor includes inner ring fire lid and thermocouple, seted up on the rampart of inner ring fire lid and protected fire hole, its characterized in that: the thermocouple is arranged on one side of the inner ring fire cover, the top of the thermocouple is positioned near the outlet of the fire protection hole, and the flame in the fire protection hole can be pressed onto the top of the thermocouple by an object above the burner.
Preferably, the distance between the center of the outer end of the fire protection hole and the top of the burner is 1-5 mm.
Preferably, the aperture of the fire-keeping hole is 0.5 mm-3 mm.
Preferably, the included angle between the central axis of the fire-protecting hole and the horizontal line is 15-60 degrees.
Preferably, the distance from the center of the outer end of the fire protection hole to the center of the top end of the thermocouple is 3-8 mm.
Preferably, the height A between the top end of the thermocouple and the center of the outer end of the fire protection hole is-B/2 to A to 0.58mm, wherein B represents the aperture of the fire protection hole.
Compared with the prior art, the invention has the advantages that: according to the control method of the gas stove, when the cooker is placed, under the influence of the cooker, the flame in the fire protection hole and the path of the hot gas upwards propagating along the inclination angle of the fire protection hole can be changed, the propagation angle of the flame and the hot gas is pressed downwards and propagated to the periphery, and then more thermocouples are contacted, and accordingly the detection electromotive force of the thermocouples is increased. Therefore, the mode condition of the pot can be obtained by detecting the electromotive force of the thermocouple. The method realizes the detection of the placement condition of the cookware without additionally arranging the cookware detection part, avoids the problem of punching of the installation detection part, is convenient for the reconstruction of the burner and has low reconstruction cost.
The gas stove in the invention can realize the detection of whether the cooker is placed or not by utilizing the control method of the gas stove and finely adjusting the position of the thermocouple in the existing cooker.
Drawings
Fig. 1 is a sectional view of a burner in the state of the burner in the embodiment of the present invention.
Fig. 2 is a sectional view showing a state where the burner has a fire and the pot is not placed in the embodiment of the present invention.
Fig. 3 is a sectional view showing a state where the burner has a fire and the pot is placed in the embodiment of the present invention.
Fig. 4 is a flowchart of a control method of a gas range according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1 to 3, the gas stove in this embodiment includes a burner, the burner includes an inner ring fire cover 1 and a thermocouple 2, a fire protection hole 11 is opened on a ring wall of the inner ring fire cover 1, the thermocouple 2 is disposed at one side of the inner ring fire cover 1, and a top of the thermocouple 2 is located near an outlet of the fire protection hole 11. In addition, the gas stove also comprises a signal amplifying circuit, a controller and an electromagnetic valve. The thermocouple 2 is electrically connected with the controller through a signal amplification circuit, and the electromagnetic valve is electrically connected with the controller. The thermocouple 2 is used for detecting the flame condition in the fire protection hole 11, if the thermocouple 2 detects the condition of no fire under the condition that the electromagnetic valve is closed and conducted, the detection signal of the thermocouple 2 is transmitted to the controller through the amplification effect of the signal amplification circuit, and the controller controls the electromagnetic valve to be disconnected after the controller obtains the no fire signal, so that the fire-off operation is realized, and the use safety is ensured.
The specific setting parameters are as follows: the distance from the center of the outer end of the fire protection hole 11 to the top of the burner is 1 mm-5 mm. The aperture of the fire-keeping hole 11 is 0.5 mm-3 mm. The included angle between the central axis of the fire-protecting hole 11 and the horizontal line is 15-60 degrees. The distance from the center of the outer end of the fire protection hole 11 to the center of the top end of the thermocouple 2 is 3-8 mm. The height A between the top end of the thermocouple 2 and the center of the outer end of the fire protection hole 11 is-B/2 to A to 0.58mm, wherein B represents the aperture of the fire protection hole 11. Select assorted parameter according to specific product for under the condition of placing the pan on the combustor, the flame in the fire protection hole 11 can be suppressed on thermocouple 2's top by the pan of combustor top, and then improves the accuracy that thermocouple 2 detected.
As shown in fig. 4, the control method of the gas range includes the following steps: detecting and acquiring the current electromotive force U of the thermocouple 2 near the fire protection hole 11 of the inner ring fire cover 1;
comparing the electromotive force U with an electromotive force threshold value U0 corresponding to the fire state of the fire protection hole 11; in the embodiment, U0 is 5 mv;
if U is more than or equal to U0, further comparing the electromotive force U with an electromotive force threshold U1 corresponding to the pot, wherein U1 is more than U0; in the embodiment, U1 is 15 mv;
if U is less than U0, the gas stove is judged to be in a flameless state.
If U is more than or equal to U1, judging that a cooker is placed on the gas stove;
if U is less than U1, judging that no pan is placed on the gas stove, timing the duration time T of no pan after judging that no pan is placed on the gas stove, comparing T with a set time threshold T0, and if T is more than or equal to T0, controlling to shut down the fire.
According to the gas stove and the control method thereof, under the installation mode of the thermocouple 2 of the existing gas stove, no additional detection part is added, and only the installation position of the thermocouple 2 needs to be finely adjusted.
The thermocouple 2 can realize the function of maintaining the suction of the electromagnetic valve at present, can also realize the function of having no fire and having or not having a pan, and the thermocouple 2 realizes the realization of three functions simultaneously. Under the condition of fire, the cooker does not have a pot for a long time, and the central controller of the cooker can control the electromagnetic valve to be turned off, so that fire is turned off, and the combustion safety is ensured. The gas stove avoids the problem of punching of the installation detection part, is convenient to transform the existing burner, and is low in transformation cost.
Claims (9)
1. A control method of a gas stove is characterized in that: detecting and acquiring the current electromotive force U of the thermocouple (2) near the fire protection hole (11) of the inner ring fire cover (1);
comparing the electromotive force U with an electromotive force threshold U0 corresponding to the fire state of the fire protection hole (11);
if U is more than or equal to U0, further comparing the electromotive force U with an electromotive force threshold U1 corresponding to the pot, wherein U1 is more than U0;
if U is more than or equal to U1, judging that a cooker is placed on the gas stove; if U is less than U1, it is judged that no pot is placed on the gas stove.
2. The control method of the gas range according to claim 1, wherein: after the gas stove is judged not to be provided with the cookware, the duration time T of the non-provided cookware is timed, the T is compared with a set time threshold T0, and if the T is more than or equal to T0, the fire is controlled to be turned off.
3. The control method of the gas range according to claim 1 or 2, wherein: if U is less than U0, the gas stove is judged to be in a flameless state.
4. The utility model provides a gas-cooker, includes the combustor, the combustor includes inner ring fire lid (1) and thermocouple (2), fire protection hole (11), its characterized in that have been seted up on the rampart of inner ring fire lid (1): the thermocouple (2) is arranged on one side of the inner ring fire cover (1), the top of the thermocouple (2) is positioned near the outlet of the fire protection hole (11), and the flame in the fire protection hole (11) can be pressed onto the top of the thermocouple (2) by an object above the burner.
5. The gas range of claim 4, wherein: the distance between the center of the outer end of the fire protection hole (11) and the top of the burner is 1-5 mm.
6. The gas range of claim 4, wherein: the aperture of the fire protection hole (11) is 0.5 mm-3 mm.
7. The gas range of claim 4, wherein: the included angle between the central axis of the fire-protecting hole (11) and the horizontal line is 15-60 degrees.
8. Gas range according to any of claims 4 to 7, characterized in that: the distance from the center of the outer end of the fire protection hole (11) to the center of the top end of the thermocouple (2) is 3-8 mm.
9. Gas range according to any of claims 4 to 7, characterized in that: the height A between the top end of the thermocouple (2) and the center of the outer end of the fire protection hole (11) is-B/2 to A to 0.58mm, wherein B represents the aperture of the fire protection hole (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811450618.2A CN111256172A (en) | 2018-11-30 | 2018-11-30 | Control method of gas stove and gas stove for realizing control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811450618.2A CN111256172A (en) | 2018-11-30 | 2018-11-30 | Control method of gas stove and gas stove for realizing control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111256172A true CN111256172A (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811450618.2A Pending CN111256172A (en) | 2018-11-30 | 2018-11-30 | Control method of gas stove and gas stove for realizing control method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204943477U (en) * | 2015-07-15 | 2016-01-06 | 浙江苏泊尔家电制造有限公司 | Burner |
| US20160084506A1 (en) * | 2014-09-18 | 2016-03-24 | E.G.O. Elektro- Geraetebau GmbH | Method of pot detection and gas hob |
| CN105757666A (en) * | 2016-04-28 | 2016-07-13 | 中山市传美奇电器有限公司 | Tri-cyclic combined full direct injection type fire distributor applied to household gas stove combustor |
| CN206504362U (en) * | 2016-10-25 | 2017-09-19 | 广东万和热能科技有限公司 | Gas-cooker intelligent safety control device |
| CN207132385U (en) * | 2017-08-14 | 2018-03-23 | 宁波方太厨具有限公司 | A kind of gas-cooker |
| CN108027141A (en) * | 2015-09-22 | 2018-05-11 | 伊莱克斯家用电器股份公司 | Gas combustion burner device for the gas cooking appliance with thermocouple |
| CN207555601U (en) * | 2017-11-22 | 2018-06-29 | 广东美的厨房电器制造有限公司 | Burner and gas kitchen ranges |
-
2018
- 2018-11-30 CN CN201811450618.2A patent/CN111256172A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160084506A1 (en) * | 2014-09-18 | 2016-03-24 | E.G.O. Elektro- Geraetebau GmbH | Method of pot detection and gas hob |
| CN204943477U (en) * | 2015-07-15 | 2016-01-06 | 浙江苏泊尔家电制造有限公司 | Burner |
| CN108027141A (en) * | 2015-09-22 | 2018-05-11 | 伊莱克斯家用电器股份公司 | Gas combustion burner device for the gas cooking appliance with thermocouple |
| CN105757666A (en) * | 2016-04-28 | 2016-07-13 | 中山市传美奇电器有限公司 | Tri-cyclic combined full direct injection type fire distributor applied to household gas stove combustor |
| CN206504362U (en) * | 2016-10-25 | 2017-09-19 | 广东万和热能科技有限公司 | Gas-cooker intelligent safety control device |
| CN207132385U (en) * | 2017-08-14 | 2018-03-23 | 宁波方太厨具有限公司 | A kind of gas-cooker |
| CN207555601U (en) * | 2017-11-22 | 2018-06-29 | 广东美的厨房电器制造有限公司 | Burner and gas kitchen ranges |
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Application publication date: 20200609 |