CN114704865A - Flameout protection method and device, oil fume suction device and readable storage medium - Google Patents
Flameout protection method and device, oil fume suction device and readable storage medium Download PDFInfo
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- CN114704865A CN114704865A CN202210334349.3A CN202210334349A CN114704865A CN 114704865 A CN114704865 A CN 114704865A CN 202210334349 A CN202210334349 A CN 202210334349A CN 114704865 A CN114704865 A CN 114704865A
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- 238000000034 method Methods 0.000 title claims abstract description 56
- 239000003517 fume Substances 0.000 title claims abstract description 37
- 238000010438 heat treatment Methods 0.000 claims abstract description 34
- 230000009471 action Effects 0.000 claims abstract description 30
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 230000008859 change Effects 0.000 claims description 11
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- 230000008569 process Effects 0.000 description 8
- 238000012545 processing Methods 0.000 description 7
- 230000000630 rising effect Effects 0.000 description 6
- 238000010025 steaming Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000006233 lamp black Substances 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000005457 optimization Methods 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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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
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/006—Fire prevention, containment or extinguishing specially adapted for particular objects or places for kitchens or stoves
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Abstract
The embodiment of the invention discloses a flameout protection method and device, oil fume suction equipment and a readable storage medium. The flameout protection method is applied to the oil fume suction device and comprises the following steps: detecting the temperature in a flue of the oil fume suction equipment; when the temperature in the flue lasts for the preset time to be larger than the first temperature threshold and the heating rate is larger than the heating rate threshold, it is judged that open fire enters the flue, and flameout protection action of the range hood device is executed. The technical scheme of the invention solves the problems that the existing flameout protection strategy is inaccurate in detection and is easy to reduce user experience, can prevent the firewall sensor from mistakenly flameout due to sporadic small fire, can also prevent the firewall sensor from mistakenly flameout due to the fact that the temperature of the whole machine is increased due to long-time large fire and full power work of the range hood device, realizes accurate detection of whether open fire enters a flue, achieves timely and accurate flameout protection, avoids potential safety hazards and improves user experience.
Description
Technical Field
The embodiment of the invention relates to the technical field of oil fume purification, in particular to a flameout protection method and device, an oil fume suction device and a readable storage medium.
Background
The existing fire wall sensor flameout protection scheme is that flameout protection is started when the real-time temperature is detected to reach a certain preset temperature (usually more than 80 ℃), and the condition can be regarded as that open fire enters a flue to cause the fire wall sensor to rapidly heat up to reach the preset temperature, so that flameout protection can be started.
However, in the actual use process, the fire wall sensor usually reaches the temperature condition of the flameout protection due to the fact that sporadic small fire enters the flue or the full-power operation of the steaming oven module in the integrated cooker, so that the flameout protection is caused, and the user experience is greatly influenced. If the flameout protection temperature threshold is increased, the protection is too slow or not protected, and potential safety hazards are brought.
Disclosure of Invention
The invention provides a flameout protection method and device, a lampblack absorbing device and a readable storage medium, which are used for accurately detecting whether open fire enters a flue or not and achieving timely and accurate flameout protection.
In a first aspect, an embodiment of the present invention provides a flameout protection method, which is applied to a range hood device, and the method includes:
detecting the temperature in a flue of the oil fume suction equipment;
when the temperature in the flue lasts for a preset time and is greater than a first temperature threshold value, and the heating rate is greater than a heating rate threshold value, it is judged that open fire enters the flue, and flameout protection action of the oil fume suction device is executed.
Optionally, when the temperature in the flue lasts for a preset time longer than a first temperature threshold and the temperature rise rate is greater than a temperature rise rate threshold, it is determined that an open fire enters the flue, and an flameout protection action of the range hood device is executed, including:
determining that the continuous preset time of the temperature in the flue is greater than a first temperature threshold value;
calculating the temperature rise rate of the temperature in the flue;
and when the temperature rise rate is greater than the temperature rise rate threshold value, judging that open fire enters the flue, and executing flameout protection action of the oil fume suction device.
Optionally, calculating a rate of rise of temperature of the temperature within the flue includes:
recording the change value delta T of the temperature in the flue at preset time intervals delta Tn；
According to the formula A ═ DeltaTnObtaining the heating rate A of the flue in the current time period; wherein n is an integer greater than or equal to 2.
Optionally, when the temperature in the flue lasts for a preset time longer than a first temperature threshold and the temperature increase rate is greater than a temperature increase rate threshold, it is determined that an open fire enters the flue, and before the soot absorption device is executed to perform a flameout protection action, the method further includes:
determining that the temperature in the flue is smaller than a second temperature threshold and larger than a first temperature threshold; wherein the second temperature threshold is greater than the first temperature threshold.
Optionally, after detecting the temperature in the flue of the range hood device, the method further includes:
and when the temperature in the flue is greater than the second temperature threshold value, directly judging that open fire enters the flue, and executing flameout protection action of the range hood equipment.
Optionally, after detecting the temperature in the flue of the range hood device, the method further includes:
and when the temperature in the flue is smaller than the first temperature threshold value, judging that no open fire enters the flue, and continuously detecting the temperature in the flue of the oil fume suction equipment.
Optionally, the first temperature threshold ranges from 50 ℃ to 60 ℃ and the second temperature threshold ranges from 90 ℃ to 100 ℃.
In a second aspect, an embodiment of the present invention further provides a flameout protection device, including:
the temperature detection module is used for detecting the temperature in the flue of the oil fume suction equipment;
and the flameout protection execution module is used for judging that open fire enters the flue and executing flameout protection action of the oil fume suction device when the temperature in the flue lasts for the preset time and is greater than the first temperature threshold and the heating rate is greater than the heating rate threshold.
In a third aspect, an embodiment of the present invention further provides a range hood device, including:
one or more processors;
storage means for storing one or more programs;
the temperature sensor is used for collecting the temperature of the flue;
when executed by the one or more processors, cause the one or more processors to implement a misfire protection method as recited in any of the first aspects.
In a fourth aspect, the present invention further provides a readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements a misfire protection method as recited in any one of the first aspects.
In the embodiment of the invention, the condition that open fire occurs in the range hood device and enters the flue can be detected and determined by firstly detecting the temperature in the flue of the range hood device, then judging that the open fire enters the flue when the temperature in the flue lasts for the preset time and is greater than the first temperature threshold and the temperature rise rate is greater than the temperature rise rate threshold, and executing the flameout protection action of the range hood device. The technical scheme of the invention solves the problems that the existing flameout protection strategy is inaccurate in detection and is easy to reduce user experience, can solve the problem of error protection caused by sporadic small fire entering the flue by prolonging the judgment time, and can also solve the problem of error protection of a firewall sensor caused by full-power operation of a steaming and baking module by detecting the temperature jump value, thereby realizing accurate detection of whether open fire enters the flue, timely and accurately flameout protection, avoiding potential safety hazard and improving user experience.
Drawings
Fig. 1 is a flow chart of a misfire protection method provided in an embodiment of the present invention;
FIG. 2 is a flow chart of another misfire protection method provided in accordance with an embodiment of the present invention;
FIG. 3 is a logic diagram of a specific misfire protection method provided in accordance with an embodiment of the present invention;
fig. 4 is a schematic structural view of an extinction protection device provided by an embodiment of the invention;
fig. 5 is a schematic structural diagram of a range hood device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings, not all of them.
Fig. 1 is a flowchart of a flameout protection method according to an embodiment of the present invention, and referring to fig. 1, the flameout protection method according to the embodiment of the present invention is mainly applied to a range hood device, such as an integrated stove, where the range hood device is provided with a cooking bench and a flue located on the cooking bench, and the flameout protection method is mainly used for protecting the range hood device when an open fire enters the flue. Specifically, the flameout protection method can be executed by a central processing unit in the range hood device. In this embodiment, as shown in fig. 1, the misfire protection method includes the following steps:
s110, detecting the temperature in a flue of the oil fume suction equipment;
in the oil fume suction device of the embodiment of the invention, a firewall sensor is required to be arranged in the flue, and the firewall sensor is essentially a temperature sensor and is responsible for monitoring the temperature of the flue in real time and feeding back the temperature to the central processing unit. This step is essentially the process of the central processing unit receiving the temperature collected by the firewall sensor.
And S120, when the temperature in the flue lasts for a preset time longer than a first temperature threshold and the heating rate is greater than a heating rate threshold, judging that open fire enters the flue, and executing flameout protection action of the oil fume suction device.
The step is a process that the central processing unit analyzes and judges according to the real-time temperature of the flue, and the central processing unit synchronously processes and analyzes the real-time temperature in the process that the firewall sensor provides the real-time temperature, wherein the process comprises the steps of comparing the real-time temperature, recording the temperature duration and calculating the change rate of the real-time temperature.
It will be appreciated that the flue temperature will generally be below a certain temperature value, and in the event of an open fire entering the flue, the flue temperature will rise significantly, reaching a temperature which would not normally be reached, and to some extent will continue to be at a high temperature. However, it is only determined that there is an open fire entering the flue according to the temperature, and it may be misjudged due to sporadic small fire or the full power operation condition of the steam oven, and in order to more accurately determine the condition that there is an open fire entering the flue and to eliminate the misjudgment, in this embodiment, the temperature rise rate of the flue temperature is first calculated and compared, wherein a temperature rise rate threshold is reasonably set through experiments or experience, and it may be determined that the current flue is in a continuous high temperature state, that is, it may be preliminarily determined that there is an open fire entering the flue. In the embodiment, the time duration may be set to 3-5s, and the temperature rise rate threshold may be set within a range of 20-30 ℃ as an example.
From above, after two judgement conditions accurately judge that present naked light gets into the flue, then executable flame-out protection action, flame-out protection action can be including closing the kitchen range, closing the steaming oven, closing lampblack absorber etc. can in time eliminate the fire source from this, avoids the naked light to arouse the fire, brings the potential safety hazard.
In the embodiment of the invention, the condition that open fire occurs in the range hood device and enters the flue can be detected and determined by firstly detecting the temperature in the flue of the range hood device, then judging that the open fire enters the flue when the temperature in the flue lasts for the preset time and is greater than the first temperature threshold and the temperature rise rate is greater than the temperature rise rate threshold, and executing the flameout protection action of the range hood device. The technical scheme of the invention solves the problems that the existing flameout protection strategy is inaccurate in detection and is easy to reduce user experience, can solve the problem of error protection caused by sporadic small fire entering the flue by prolonging the judgment time, and can also solve the problem of error protection of a firewall sensor caused by full-power operation of a steaming and baking module by detecting the temperature jump value, thereby realizing accurate detection of whether open fire enters the flue, timely and accurately flameout protection, avoiding potential safety hazard and improving user experience.
Based on the above embodiment, in step S120, when the temperature in the flue lasts for the preset time and is greater than the first temperature threshold, and the temperature increase rate is greater than the temperature increase rate threshold, it is determined that an open fire enters the flue, and a flameout protection action of the range hood device is performed, which specifically includes:
determining that the continuous preset time of the temperature in the flue is greater than a first temperature threshold value;
calculating the temperature rise rate of the temperature in the flue;
and when the temperature rise rate is greater than the temperature rise rate threshold value, judging that open fire enters the flue, and executing flameout protection action of the oil fume suction device.
In another embodiment of the present invention, in step S120, before determining that an open fire enters the flue and performing the soot absorption device extinguishing protection operation when the temperature rising rate of the temperature in the flue is greater than the temperature rising rate threshold and the temperature is greater than the first temperature threshold, the following steps may be further added:
determining that the temperature in the flue is smaller than a second temperature threshold and larger than a first temperature threshold; wherein the second temperature threshold is greater than the first temperature threshold.
Further, for the whole control process of the range hood, at least one of the following steps may be added in other embodiments of the present invention:
when the temperature in the flue is greater than a second temperature threshold value, directly judging that open fire enters the flue, and executing flameout protection action of the range hood equipment;
and when the temperature in the flue is smaller than the first temperature threshold value, judging that no open fire enters the flue, and continuously detecting the temperature in the flue of the oil fume suction equipment.
Fig. 2 is a flowchart of another misfire protection method provided in an embodiment of the present invention, and referring to fig. 2, the misfire protection method includes:
s210, detecting the temperature in a flue of the oil fume suction equipment;
s220, determining that the temperature in the flue is smaller than a second temperature threshold and larger than a first temperature threshold; wherein the second temperature threshold is greater than the first temperature threshold.
The first temperature threshold may be considered as an upper limit value of the temperature under normal operation, and when the upper limit value of the temperature under normal operation is exceeded, it indicates that the current flue is abnormal, for example, it may be that open fire enters the flue, or it may be that sporadic small fire enters the flue, etc. The first temperature threshold can be set within the range of 50-60 ℃ through research, and a person skilled in the art can select the first temperature threshold according to the actual structure of the range hood device without much limitation.
It will also be appreciated that the second temperature threshold is essentially a lower temperature limit of the stack that is evident after the open flame has entered the stack, and that when the stack temperature is greater than the second temperature threshold, it is an indication that the current stack has entered the open flame. Through research, the second temperature threshold can be selected within the range of 90 ℃ to 100 ℃, and a person skilled in the art can select the second temperature threshold according to the actual structure of the range hood device without any limitation.
Based on the first temperature threshold and the second temperature threshold, when the temperature in the flue is greater than the first temperature threshold and less than the second temperature threshold, that is, the flue temperature is between the first temperature threshold and the second temperature threshold, it indicates that the current flue is in an abnormal working state, and there is a possibility that open fire enters the flue. In this case, the flue temperature may be further processed and analyzed to clarify where the flue is located.
S230, determining that the continuous preset time of the temperature in the flue is greater than a first temperature threshold value;
s240, calculating the temperature rise rate of the temperature in the flue;
after the suspected open fire entering the flue is determined according to the two temperature thresholds in the step S220, the duration and the heating rate can be calculated, and then the heating rate is calculated when the duration is met, so that the central processing unit can be prevented from calculating the heating rate in real time, and the load of the processor is reduced. The process of calculating the temperature increase rate may specifically include the following steps:
s241, recording the change value delta T of the temperature in the flue every preset time delta Tn；
The step is that after the temperature in the flue is detected to be gradually increased and higher than a first temperature threshold value, a temperature increase value delta Tn in the preset time period is calculated every preset time delta t. It can be understood that, when the temperature increase value is calculated, the temperature values at the initial time and the end time of the preset time period need to be recorded, and the temperature change value in the time period can be obtained by taking the difference.
S242, according to formula A ═ DeltaTnObtaining the heating rate A of the flue in the current time period; wherein n is an integer greater than or equal to 2.
As above, on the basis of knowing the temperature increase value a in the current preset time period, the temperature increase rate of the temperature zone can be conveniently obtained by removing the temperature increase value a, so as to determine the temperature increase rate condition of the current flue, and determine whether the current temperature change is too fast or not, and whether the temperature change condition meets the temperature change condition when an open fire enters the flue.
And S250, when the temperature rising rate is larger than the temperature rising rate threshold value, judging that open fire enters the flue, and executing flameout protection action of the oil fume suction device.
And S260, when the temperature in the flue is greater than the second temperature threshold value, directly judging that open fire enters the flue, and executing flameout protection action of the range hood device.
And S270, when the temperature in the flue is smaller than the first temperature threshold value, judging that no open fire enters the flue, and continuously detecting the temperature in the flue of the oil fume suction equipment.
The steps S260 and S270 are substantially parallel branches of the step S220, and the state of the current flue can be clarified by determining the temperature section. If the flue temperature is higher than the second temperature threshold in step S260, that is, if the temperature is too high, it can be directly determined that an open fire enters the flue, so as to timely and timely perform flameout protection to avoid potential safety hazards.
In addition, the following steps performed in the implementation of the misfire protection method according to the embodiment of the present invention are illustrated, fig. 3 is a logic block diagram of a specific misfire protection method according to the embodiment of the present invention, and referring to fig. 3, the misfire protection method may generally include:
1) the user is ignited, the firewall sensor monitors the temperature in the air duct in real time, and data are transmitted to the main controller;
2) if the current temperature T is higher than Ta, directly judging that open fire enters the flue, performing flameout protection on the equipment, and closing all loads of the equipment, wherein Ta is the temperature which can be quickly reached when open fire enters the flue and is slightly higher than the temperature which can be reached after the equipment steaming oven runs at full power and the stove module continuously burns for a period of time, and specific parameters can be obtained after the equipment runs for multiple times, preferably 90-100 ℃.
3) If the current temperature T is less than Ta and greater than Tb (50-60 ℃), the main controller starts to time the current temperature for a time longer than Tb, and if the current temperature T is less than X, no open fire enters, and monitoring is continued; if the duration is longer than X, primarily judging that open fire enters the flue, and preferably selecting the time threshold X for 3-5s, so that not only can a response measure be made quickly, but also the judgment can be fully made to prevent misjudgment;
4) the method comprises the following steps that under the condition that open fire enters a flue is preliminarily judged by equipment, a main controller obtains real-time temperature change in a time period every delta t, if the absolute value of the temperature change value is larger than A, the condition that the open fire enters the flue is judged, and flameout protection is conducted on the equipment; and if the absolute value of the temperature change value is less than A, judging that no open fire enters, and continuing monitoring. The delta t is preferably 3-5s, A is preferably 20-30 ℃/s, and is generally a jump value within a short time after an actual open fire enters a flue, and specific parameters of the jump value can be obtained by multiple simulation tests of equipment.
Based on the same inventive concept, the embodiment of the invention also provides a flameout protection device. Fig. 4 is a schematic diagram of an extinguishing device according to an embodiment of the present invention, which can be applied to an extinguishing device of a range hood, wherein the extinguishing device can be implemented by software and/or hardware and is generally integrated with a main controller.
As shown in fig. 4, the apparatus includes: the temperature detection module 41 is used for detecting the temperature in the flue of the oil fume suction device; and the flameout protection execution module 42 is configured to determine that an open fire enters the flue and execute a flameout protection action of the range hood device when the temperature in the flue lasts for the preset time and is greater than the first temperature threshold and the heating rate is greater than the heating rate threshold.
In the embodiment of the invention, the temperature in the flue of the oil fume suction device is firstly detected by the temperature detection module, then the flameout protection execution module is utilized to continuously detect that the temperature in the flue is longer than the first temperature threshold value for the preset time, and when the heating rate is larger than the heating rate threshold value, the open fire enters the flue, and the flameout protection action of the oil fume suction device is executed, so that the condition that the open fire of the oil fume suction device enters the flue can be detected and determined. The technical scheme of the invention solves the problems that the existing flameout protection strategy is inaccurate in detection and is easy to reduce user experience, can solve the problem of error protection caused by sporadic small fire entering a flue by prolonging the judgment time, and can also solve the problem of error protection of a firewall sensor caused by full-power operation of a steaming and baking module by detecting the temperature jump value, thereby realizing accurate detection of whether open fire enters the flue, timely and accurately flameout protection, avoiding potential safety hazards and improving user experience.
Based on the above technical scheme, the device further comprises: the flameout protection execution module 42 may specifically include a temperature comparison unit, a heating rate calculation unit, and a flameout protection execution unit, where the temperature comparison module semantically determines that the duration of the preset time of the temperature in the flue is greater than a first temperature threshold; the heating rate calculating unit is used for calculating the heating rate of the temperature in the flue; and the flameout protection execution unit is used for judging that open fire enters the flue when the heating rate is greater than the heating rate threshold value and executing flameout protection action of the oil fume suction device.
On the basis of the above optimization, the heating rate calculating unit may include a time recording subunit and a heating rate calculating subunit, wherein the time recording subunit is configured to record the time T after the preset interval temperature Δ T per liter of temperaturen(ii) a A temperature rise rate calculation subunit for calculating the temperature rise rate according to the formula Kn＝△T/(tn-tn-1) To obtain the heating rate K in the current temperature zonen(ii) a Wherein n is an integer greater than or equal to 2.
Further, misfire protection execution module 42 is further configured to determine that a temperature in the flue is less than a second temperature threshold and greater than a first temperature threshold; wherein the second temperature threshold is greater than the first temperature threshold.
In addition, the flameout protection execution module 42 is further configured to directly determine that an open fire enters the flue when the temperature in the flue is greater than the second temperature threshold, and execute a flameout protection action of the range hood device.
Or, the misfire protection execution module 42 is further configured to determine that no open fire enters the flue when the temperature in the flue is smaller than the first temperature threshold, and continuously detect the temperature in the flue of the range hood device.
The flameout protection device can execute the flameout protection method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
Fig. 5 is a schematic structural diagram of a range hood device according to an embodiment of the present invention. As shown in fig. 5, the oil smoke suction device provided by the embodiment of the present invention includes: one or more processors 51 and storage 52; the processor 51 in the device may be one or more, and fig. 5 takes one processor 51 as an example; the storage device 52 is used to store one or more programs; a temperature sensor 53 for collecting the flue temperature; the one or more programs are executed by the one or more processors 51, such that the one or more processors 51 implement a misfire protection method as recited in any of the embodiments of the invention.
The apparatus may further include: an input device 54 and an output device 55.
The processor 51, the storage device 52, the temperature sensor 53, the input device 54 and the output device 55 in the apparatus may be connected by a bus or other means, and the connection by the bus is exemplified in fig. 5.
The storage device 52 of the apparatus, which is a readable storage medium, can be used to store one or more programs, which may be software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the misfire protection method provided in the embodiment of the present invention (for example, the modules in the misfire protection apparatus shown in fig. 4 include a temperature detection module 41 for detecting the temperature in the flue of the range hood apparatus, and a misfire protection execution module 42 for determining that an open fire enters the flue and executing the misfire protection action of the range hood apparatus when the temperature in the flue lasts for a preset time longer than a first temperature threshold and the temperature rising rate is greater than a temperature rising rate threshold). The processor 51 executes various functional applications and data processing of the terminal device by running software programs, instructions and modules stored in the storage device 52, that is, implements the flameout protection method in the above method embodiment.
The storage device 52 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to use of the device, and the like. Further, the storage 52 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the storage 52 may further include memory located remotely from the processor 51, which may be connected to the device over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 54 may be used to receive entered numeric or character information and to generate key signal inputs relating to user settings and function controls of the apparatus. The output device 55 may include a display device such as a display screen.
And when the one or more programs comprised by the above-mentioned apparatus are executed by the one or more processors 51, the programs perform the following operations:
detecting the temperature in a flue of the oil fume suction equipment;
when the temperature in the flue lasts for a preset time and is greater than a first temperature threshold value, and the heating rate is greater than a heating rate threshold value, it is judged that open fire enters the flue, and flameout protection action of the oil fume suction device is executed.
Embodiments of the present invention also provide a readable storage medium having stored thereon a computer program, which when executed by a processor, is configured to perform a misfire protection method, the method comprising:
detecting the temperature in a flue of the oil fume suction equipment;
when the temperature in the flue lasts for a preset time and is greater than a first temperature threshold value, and the heating rate is greater than a heating rate threshold value, it is judged that open fire enters the flue, and flameout protection action of the oil fume suction device is executed.
Optionally, the program, when executed by the processor, may be further configured to perform a misfire protection method as provided in any of the embodiments of the present invention.
Computer storage media for embodiments of the invention may employ any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a Read Only Memory (ROM), an Erasable Programmable Read Only Memory (EPROM), a flash Memory, an optical fiber, a portable CD-ROM, an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. A readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take a variety of forms, including, but not limited to: an electromagnetic signal, an optical signal, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, fiber optic cable, Radio Frequency (RF), etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in some detail by the above embodiments, the invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the invention, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. A flameout protection method is characterized by being applied to a fume suction device and comprising the following steps:
detecting the temperature in a flue of the oil fume suction equipment;
when the temperature in the flue lasts for a preset time and is greater than a first temperature threshold value, and the heating rate is greater than a heating rate threshold value, it is judged that open fire enters the flue, and flameout protection action of the oil fume suction device is executed.
2. The flameout protection method according to claim 1, wherein when the temperature in the flue continues for a preset time longer than a first temperature threshold and the temperature rise rate is greater than a temperature rise rate threshold, it is determined that an open fire enters the flue, and a flameout protection action of the range hood device is performed, comprising:
determining that the continuous preset time of the temperature in the flue is greater than a first temperature threshold value;
calculating the temperature rise rate of the temperature in the flue;
and when the temperature rise rate is greater than the temperature rise rate threshold value, judging that open fire enters the flue, and executing flameout protection action of the oil fume suction device.
3. The flameout protection method as claimed in claim 2, wherein calculating a rate of temperature rise of the temperature in the flue includes:
recording the change value delta T of the temperature in the flue at preset time intervals delta Tn；
According to formula A ═ DeltaTnObtaining the heating rate A of the flue in the current time period; wherein n is an integer greater than or equal to 2.
4. The flameout protection method according to claim 1, wherein before determining that an open fire enters the flue and performing flameout protection action of the range hood device when the temperature in the flue lasts for a preset time period greater than the first temperature threshold and the temperature rise rate is greater than the temperature rise rate threshold, the method further comprises:
determining that the temperature in the flue is smaller than a second temperature threshold and larger than a first temperature threshold; wherein the second temperature threshold is greater than the first temperature threshold.
5. The flameout protection method according to claim 4, wherein after detecting the temperature in the flue of the range hood device, the method further comprises:
and when the temperature in the flue is greater than the second temperature threshold value, directly judging that open fire enters the flue, and executing flameout protection action of the range hood equipment.
6. The flameout protection method according to claim 4, wherein after detecting the temperature in the flue of the range hood device, the method further comprises:
and when the temperature in the flue is smaller than the first temperature threshold value, judging that no open fire enters the flue, and continuously detecting the temperature in the flue of the oil fume suction equipment.
7. Flameout protection method according to claim 6, characterized in that said first temperature threshold ranges from 50 ℃ to 60 ℃ and said second temperature threshold ranges from 90 ℃ to 100 ℃.
8. An extinguisher protection device, comprising:
the temperature detection module is used for detecting the temperature in the flue of the oil fume suction equipment;
and the flameout protection execution module is used for judging that open fire enters the flue and executing flameout protection action of the oil fume suction device when the temperature in the flue lasts for the preset time and is greater than the first temperature threshold and the heating rate is greater than the heating rate threshold.
9. A range hood device, comprising:
one or more processors;
storage means for storing one or more programs;
the temperature sensor is used for collecting the temperature of the flue;
when executed by the one or more processors, cause the one or more processors to implement a misfire protection method as recited in any of claims 1-7.
10. A readable storage medium, on which a computer program is stored, which program, when being executed by a processor, is adapted to carry out a misfire protection method as claimed in one of claims 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210334349.3A CN114704865A (en) | 2022-03-30 | 2022-03-30 | Flameout protection method and device, oil fume suction device and readable storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210334349.3A CN114704865A (en) | 2022-03-30 | 2022-03-30 | Flameout protection method and device, oil fume suction device and readable storage medium |
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| CN114704865A true CN114704865A (en) | 2022-07-05 |
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| CN202210334349.3A Pending CN114704865A (en) | 2022-03-30 | 2022-03-30 | Flameout protection method and device, oil fume suction device and readable storage medium |
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