CN104728873A - Stove flameout control method - Google Patents
Stove flameout control method Download PDFInfo
- Publication number
- CN104728873A CN104728873A CN201510103089.9A CN201510103089A CN104728873A CN 104728873 A CN104728873 A CN 104728873A CN 201510103089 A CN201510103089 A CN 201510103089A CN 104728873 A CN104728873 A CN 104728873A
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- Prior art keywords
- temperature
- time
- flame
- kitchen range
- control method
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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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- 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 discloses a stove flameout control method. The stove flameout control method comprises the following steps: acquiring the temperature in a stove air flue, and sending a flameout command to shut down if the temperature raises within the preset time interval. According to the stove flameout control method, after the temperature in the air flue is collected continuously, within the preset time interval, only when the temperature rises increasingly, the flameout command is sent to shut down, so that the misoperation of flameout is prevented after a stove sends the flameout command as steam enters the air flue, and the temperature in the air flue raises.
Description
Technical field
The present invention relates to a kind of control method, particularly relate to the control method that a kind of kitchen range are flame-out.
Background technology
Gas kitchen ranges is a kind of important kitchen utensils of family's indispensability, the switch of kitchen range combustion gas is generally magnetic valve, magnetic valve is an electromagnet, magnetic field is had to produce after energising, the connecting rod of energy adhesive spool, the air admission hole of burnt gas valve is opened, and the effect by own spring force after dead electricity can automatically reset again, seal combustion gas pore, ensure that combustion gas can not be excessive.
In order to can shut electromagnetic valve immediately after making kitchen range flame-out suddenly, prevent combustion gas excessive, the burner of kitchen range can be provided with thermocouple.Thermocouple is the B alloy wire that two different materials weld together, and when the heating one end other end cools, can produce electromotive force (voltage) between two B alloy wires.The size producing electromotive force is decided by material character and the heating-up temperature of B alloy wire.When flame heats, the electromotive force that thermocouple two ends produce is supplied to magnetic valve, and magnetic valve obtains electric maintenance adhesive, maintains the conducting of combustion gas; When meeting accident flame-out, the electromotive force at thermocouple two ends disappears, and fuel gas path is blocked in the release of magnetic valve dead electricity, prevents combustion gas excessive.
Integrated kitchen range is a kind of gas kitchen ranges integrating the several functions such as range hood, gas-cooker, disinfection cabinet, storage cabinet, and it has advantages such as saving space, smoke pumping are effective, low energy environmental protection, is widely used.
But also there is a fatal defect in integrated kitchen range, namely the blower fan of range hood is arranged on below the kitchen range top, oil smoke draws downward suction by blower fan, if the suction air volume of range hood is excessive or due to outside environmental elements cause flame to be strengthened suddenly time, the flame of gas-cooker can be inhaled in range hood, the downward suction of flame can cause whole integrated kitchen range to burn, and there is disaster hidden-trouble.
Therefore, firewall protection device is all provided with in most of integrated kitchen range.Firewall protection device comprises the temperature sensor be arranged in kitchen range air duct of range hood, and temperature sensor is electrically connected with main control chip, and the flame-out instruction that main control chip exports controls the gauge tap in For Thermocouple Circuit.When entering when there being naked light that in air channel or air channel, temperature is too high, the main control chip be electrically connected with the temperature sensor in air channel can export flame-out instruction, and flame-out instruction disconnects gauge tap.
Found through experiments, when there being naked light to enter air channel, the temperature in air channel can be accelerated to rise, at this time temperature rising curve steeper, as shown in Figure 1; And when steam enters air channel, be the rising of temperature in a flash usually, along with the rotation of blower fan, the heat of steam can run off in a large number, causes the temperature in air channel to decline gradually again, as shown in Figure 2.
Temperature sensor is when detected temperatures; easily be subject to the interference that air channel sucks steam, the steam as food steamer, steamer enters air channel moment, and temperature in air channel also can be made to raise; easily cause the maloperation of kitchen range firebreak device, this just needs the control method improving kitchen range flameproof protection device.
Summary of the invention
The object of the present invention is to provide a kind of have naked light to enter in kitchen range air channel or air channel, temperature is too high time, accurately can send the control method that flame-out instruction is carried out stopping working, reduce and cause wind duct temperature too high and the maloperation that causes because steam etc. enters air channel.
For achieving the above object, the invention provides following technical scheme: the control method that a kind of kitchen range are flame-out, gather the temperature in kitchen range air channel, within a predetermined period of time, if temperature is accelerated to rise, then send flame-out instruction and stop working.
The present invention is in continuous acquisition air channel after temperature, within a predetermined period of time, only have when temperature is accelerated to rise (meeting the situation sucking naked light in air channel), just can send flame-out instruction to stop working, therefore, avoid and cause temperature in air channel to raise because steam enters air channel, thus cause kitchen range to send flame-out instruction and then flame-out maloperation.
In the present invention, the starting point of described predetermined amount of time and terminal dynamic change.If detect in predetermined time section, temperature is accelerated to rise, then send flame-out instruction; If do not detect in predetermined time section, temperature is accelerated to rise, then reset the starting point of predetermined amount of time, and continue to gather the temperature in kitchen range air channel, the time difference of the starting point of adjacent predetermined amount of time is 0.5 ~ 2 second.
In order to send flame-out instruction in time, after detecting in air channel that temperature is accelerated to rise within a predetermined period of time, can be judged as that entering naked light in air channel sends flame-out instruction, as preferably, the length of described predetermined amount of time is 3 ~ 6 seconds; The length of each predetermined amount of time is equal.
When for judging that the predetermined amount of time of wind duct temperature situation of change is too short, easily causing temperature in air channel to raise instantaneously or the impact of other factors because steam enters air channel, forming erroneous judgement, send flame-out instruction mistakenly; When described predetermined amount of time is long, postponing sending of flame-out instruction, when really there being naked light to enter air channel, easily causing the generation of fire because flame-out instruction can not be sent in time.Therefore, as preferably, the length of described predetermined amount of time is 4 seconds.
For making the collection of temperature meticulousr, the control method making kitchen range of the present invention flame-out is more accurate, and as preferably, described predetermined amount of time is divided into some time interval, and the length in each described time interval is 1 ~ 3 second; The length in each time interval is equal.
Further preferably, the length in each described time interval is 1 second.
For the ease of judging the situation of change of temperature in predetermined amount of time, as preferably, the temperature within each time interval in continuous acquisition kitchen range air channel, calculates the temperature averages in this time interval according to the temperature signal collected; Determine whether temperature is accelerated to rise according to the change of the some temperature averages obtained.
When there being naked light to enter air channel, temperature in air channel rises and is exceedingly fast, temperature rising curve steeper, namely the slope of temperature rising curve is larger, particularly, the decision method that temperature is accelerated to rise is: within several time intervals of continuous adjacent, the temperature averages in the rear time interval is greater than the temperature averages in previous interval, and both differences rise continuously.
Demand fulfillment following several condition when judging that in air channel, temperature is accelerated to rise:
Causing temperature in air channel to raise instantaneously when steam enters air channel and the maloperation that produces to reduce, avoiding flame-out instruction to send delay simultaneously, as preferably, judge that temperature is accelerated should meet when rising, the quantity in the time interval of continuous adjacent is 4 ~ 6;
Meanwhile, judge that temperature is accelerated should meet when rising, the temperature averages in the rear time interval is at least greater than the temperature averages 2 degree in previous interval.
Judge temperature accelerate rise time should meet, the difference of the temperature averages of adjacent time inter at the uniform velocity or accelerate rise.
The present invention gathers the temperature in air channel by temperature sensor, and described temperature sensor is arranged on the position relative with cooking range furnace end of inlet scoop, air channel.
The present invention has following beneficial effect: the present invention is in continuous acquisition air channel after temperature, within a predetermined period of time, only have when temperature is accelerated to rise, just can send flame-out instruction to stop working, therefore, avoid and cause temperature in air channel to raise because steam enters air channel, thus cause kitchen range to send flame-out instruction and then flame-out maloperation.
Accompanying drawing explanation
Temperature rising curve when Fig. 1 is kitchen range air channel suction naked light;
Temperature rising curve when Fig. 2 is kitchen range air channel suction steam.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail, it is pointed out that the following stated embodiment is intended to be convenient to the understanding of the present invention, and any restriction effect is not play to it.
Found through experiments, when there being naked light to enter air channel, the temperature in air channel can be accelerated to rise, at this time temperature rising curve steeper, as shown in Figure 1; And when steam enters air channel, be the rising of temperature in a flash usually, along with the rotation of blower fan, the heat of steam can run off in a large number, causes the temperature in air channel to decline gradually again, as shown in Figure 2.
Cause wind duct temperature too high and the maloperation that causes flame-out instruction in order to avoid entering air channel because of steam etc., control method of the present invention is, gathers the temperature in kitchen range air channel, within a predetermined period of time, if temperature is accelerated to rise, then sends flame-out instruction and stops working.
The length of predetermined amount of time is 4 seconds; The length of each predetermined amount of time is equal.For making the collection of temperature meticulousr, the control method making kitchen range of the present invention flame-out is more accurate, and each predetermined amount of time is divided into 4 time intervals, and the length in each time interval is 1 second.
The starting point of predetermined amount of time and terminal are dynamic changes, the time difference of the starting point of adjacent predetermined amount of time is 1 second, namely the change of temperature in next predetermined amount of time is entered after completing the judgement of a predetermined amount of time (4 seconds) interior temperature, the starting point of next predetermined amount of time and the time difference of a upper predetermined amount of time are 1 second, and some is overlapping to adjacent predetermined amount of time in time.
For the ease of judging the situation of change of temperature in predetermined amount of time, the temperature within each time interval in continuous acquisition kitchen range air channel, calculates the temperature averages in this time interval according to the temperature signal collected; Determine whether temperature is accelerated to rise according to the change of the some temperature averages obtained.
The decision method that temperature is accelerated to rise is: within 4 time intervals of continuous adjacent, temperature averages in the rear time interval is greater than the temperature averages in previous interval, and both differences rise continuously, the difference of the temperature averages of adjacent time inter at the uniform velocity or accelerate rise, and after temperature averages in a time interval can be judged to be that naked light enters air channel when being at least greater than in previous interval temperature averages 2 degree, now send flame-out instruction and stop working.
The control method that kitchen range of the present invention stop working can be expressed as:
Temperature in continuous acquisition air channel, calculated every 1 second and records the temperature averages in 1 second, getting the temperature of continuous 4 seconds, be recorded as T1, T2, T3, T4 respectively.
As T2-T1 > A, counting adds 1; As T3-T2 > B, counting adds 1; As T4-T3 > C, counting adds 1.Wherein A is 2 degree, and B is 3 degree, and C is 4 degree, meets C > B > A.
If when tale is more than or equal to 2, naked light can be determined with and enters air channel.
Above-described embodiment has been described in detail technical scheme of the present invention and beneficial effect; be understood that and the foregoing is only specific embodiments of the invention; be not limited to the present invention; all make in spirit of the present invention any amendment, supplement and equivalent to replace, all should be included within protection scope of the present invention.
Claims (10)
1. the control method that kitchen range are flame-out, is characterized in that, gathers the temperature in kitchen range air channel, within a predetermined period of time, if temperature is accelerated to rise, then sends flame-out instruction and stops working.
2. the control method that kitchen range according to claim 1 are flame-out, is characterized in that, the starting point of described predetermined amount of time and terminal dynamic change.
3. the control method that kitchen range according to claim 2 are flame-out, it is characterized in that, the time difference of the starting point of adjacent predetermined amount of time is 0.5 ~ 2 second.
4. the control method that kitchen range according to claim 1 are flame-out, it is characterized in that, the length of described predetermined amount of time is 3 ~ 6 seconds; The length of each predetermined amount of time is equal.
5. the control method that kitchen range according to claim 1 are flame-out, it is characterized in that, described predetermined amount of time is divided into some time interval, and the length in each described time interval is 1 ~ 3 second; The length in each time interval is equal.
6. the control method that kitchen range according to claim 5 are flame-out, it is characterized in that, the temperature within each time interval in continuous acquisition kitchen range air channel, calculates the temperature averages in this time interval according to the temperature signal collected;
Determine whether temperature is accelerated to rise according to the change of the some temperature averages obtained.
7. the control method that kitchen range according to claim 6 are flame-out, it is characterized in that, the decision method that temperature is accelerated to rise is: within several time intervals of continuous adjacent, temperature averages in the rear time interval is greater than the temperature averages in previous interval, and both differences rise continuously.
8. the control method that kitchen range according to claim 7 are flame-out, is characterized in that, judge that temperature is accelerated should meet when rising, the quantity in the time interval of continuous adjacent is 4 ~ 6.
9. the control method that kitchen range according to claim 7 are flame-out, is characterized in that, judge that temperature is accelerated should meet when rising, the temperature averages in the rear time interval is at least greater than the temperature averages 2 degree in previous interval.
10. the control method that kitchen range according to claim 7 are flame-out, is characterized in that, judges that temperature is accelerated should meet when rising, and the difference of the temperature averages of adjacent time inter at the uniform velocity or accelerate to rise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510103089.9A CN104728873B (en) | 2015-03-09 | 2015-03-09 | A kind of flame-out control method of kitchen range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510103089.9A CN104728873B (en) | 2015-03-09 | 2015-03-09 | A kind of flame-out control method of kitchen range |
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| Publication Number | Publication Date |
|---|---|
| CN104728873A true CN104728873A (en) | 2015-06-24 |
| CN104728873B CN104728873B (en) | 2017-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510103089.9A Active CN104728873B (en) | 2015-03-09 | 2015-03-09 | A kind of flame-out control method of kitchen range |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114704865A (en) * | 2022-03-30 | 2022-07-05 | 杭州老板电器股份有限公司 | Flameout protection method and device, oil fume suction device and readable storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1667320A (en) * | 2005-03-29 | 2005-09-14 | 西安交通大学 | Safety protection method for unexpected flameout of multipoint temperature control gas appliance |
| CN204176702U (en) * | 2014-10-20 | 2015-02-25 | 江苏美大电器有限公司 | Bottom discharge integrated oven two pass firebreak device |
| CN104373984A (en) * | 2014-11-19 | 2015-02-25 | 江苏元升厨卫电器有限公司 | Fire protection device for flue of integrated cooker |
-
2015
- 2015-03-09 CN CN201510103089.9A patent/CN104728873B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1667320A (en) * | 2005-03-29 | 2005-09-14 | 西安交通大学 | Safety protection method for unexpected flameout of multipoint temperature control gas appliance |
| CN204176702U (en) * | 2014-10-20 | 2015-02-25 | 江苏美大电器有限公司 | Bottom discharge integrated oven two pass firebreak device |
| CN104373984A (en) * | 2014-11-19 | 2015-02-25 | 江苏元升厨卫电器有限公司 | Fire protection device for flue of integrated cooker |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114704865A (en) * | 2022-03-30 | 2022-07-05 | 杭州老板电器股份有限公司 | Flameout protection method and device, oil fume suction device and readable storage medium |
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| Publication number | Publication date |
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| CN104728873B (en) | 2017-03-15 |
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Address after: 312000 No. 68 Xintao Road, Qixing Street, Xinchang County, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Xintao Electronic Technology Co., Ltd. Address before: 312500 Xinchang County, Zhejiang Province, Tao Road, No. 68, No. Patentee before: Zhejiang Xin Tao electronics technology limited company |