CN114811684B - Control method of cooking device - Google Patents
Control method of cooking device Download PDFInfo
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- CN114811684B CN114811684B CN202210369459.3A CN202210369459A CN114811684B CN 114811684 B CN114811684 B CN 114811684B CN 202210369459 A CN202210369459 A CN 202210369459A CN 114811684 B CN114811684 B CN 114811684B
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The invention discloses a cooking device and a control method thereof, wherein the cooking device comprises a range hood and a kitchen range positioned below the range hood, the range hood comprises a range hood body and a temperature sensor arranged on the range hood body, and the range hood body is also provided with: the positions and the number of the sound sensors are corresponding to those of the kitchen range; and the main control module can judge the working state of the kitchen range and the cooking action of an operator according to the sound detected by the sound sensor and the temperature detected by the temperature sensor. Compared with the prior art, the invention has the advantages that: through sound sensor and temperature sensor combination, realize that the detection data of two sets of different judgement basis checks the judgement mutually, can solve the misjudgement that simple infrared leads to or simply utilize sound sensor's misjudgement, more accurate quick realization range hood starts to better reply is quick-witted, the condition that cooking fume such as flourishing dish changes by a wide margin, promotes user experience.
Description
Technical Field
The present invention relates to a kitchen motor, and more particularly, to a cooking apparatus and a control method of the cooking apparatus.
Background
The kitchen appliance that the range hood is indispensable as every family, its effect is through the impeller of high-speed rotation in the spiral case with the oil smoke follow air intake suction, utilize the impeller to filter the oil smoke to with the oil smoke after the filtration follow the air outlet discharge, accomplish the purification work of kitchen air, reasonable air intake setting is favorable to promoting the oil smoke effect, reduces the escape of oil smoke, promotes kitchen air quality.
The invention patent with application number 202121412960.0 discloses a range hood, which comprises a shell, wherein a sensor for monitoring a cooking range is arranged on the shell, the sensor is arranged on an angle adjusting device, the angle adjusting device is rotatably or swingably arranged on or in the shell, and the detection direction of the sensor to the cooking range can be adjusted by controlling the rotation or swing of the angle adjusting device.
Traditional range hood realizes the linkage of cigarette kitchen with the cooking utensils, needs to install corresponding transceiver module on the cooking utensils, is unfavorable for the user to select the cooking utensils freely, and fan system fixed gear or rotational speed, and the self-adaptation ability to front end culinary art state change is poor, and ordinary domestic infrared temperature measurement starts the low-cost monochromatic light infrared sensor temperature measurement of cooking utensils of adopting similar thermopile more, and the measurement is the average temperature in the visual field, starts with closing the detection performance poor, can't take into account to start and stop and the volume of transferring air of culinary art process and shift.
Disclosure of Invention
The first technical problem to be solved by the invention is to provide a cooking device aiming at the defects existing in the prior art, so that misjudgment of a single sensor is reduced, and the starting accuracy and speed of the range hood of the cooking device are improved.
The technical scheme adopted by the invention for solving the first technical problem is as follows: the utility model provides a cooking device, includes the range hood and is located the cooking utensils of range hood below, the range hood includes the range hood body and sets up the temperature sensor on the range hood body, its characterized in that:
the range hood body is also provided with:
the positions and the number of the sound sensors are corresponding to those of the kitchen range;
and the main control module can judge the working state of the kitchen range and the cooking action of an operator according to the sound detected by the sound sensor and the temperature detected by the temperature sensor.
The invention solves the second technical problem by adopting the technical proposal that: a control method of the cooking apparatus as described above, characterized by: the control method comprises the following steps:
s1) standby, monitoring the starting of the cooking device;
s2) reading information of the sound sensor;
s3) judging whether characteristic sounds of a specific frequency spectrum exist or not:
if the gas combustion sound of the stove burner exists, judging that the stove is in working combustion, then judging whether and what kind of cooking action exists by utilizing the numerical values detected by the temperature sensor and the sound sensor, and determining the gear of the corresponding range hood;
if the sound of the ignition of the kitchen range exists, the kitchen range is judged to be ignited, then the numerical value detected by the temperature sensor is utilized to judge whether the ignition of the kitchen range is successful, if the ignition is successful, the smoke suction of the kitchen range hood is controlled to be started, if the ignition is unsuccessful, a fan system of the kitchen range hood is not started, and an ignition failure prompt is sent out;
if the two types of characteristic sounds are not available, the kitchen range is judged to be closed, and the range hood is controlled to be in the lowest gear.
Further, in step S3), if it is determined that the stove is operating and burning, the method further includes the steps of:
s4) recording temperature information of the temperature sensor in a period of time;
s5) judging whether N groups of temperature values with different time exist, wherein N is the number of preset temperature values to be detected, and if so, entering a step S6); if not, waiting for a time Deltat 1, and then returning to step S4);
s6) fitting the temperature-time function, judging whether the periodicity exists and the periodicity is within [ t1, t2], if yes, entering step S7), if no, judging whether and what kind of cooking action exists according to the sound information detected by the sound sensor, and determining the gear of the corresponding range hood;
s7) judging the cooking action of an operator as in-process pot or quick-frying; then judging whether the range hood is in the maximum gear or not, if so, maintaining the current gear, and returning to the step S2); if not, the maximum gear is adjusted, and then the process returns to step S2).
Further, in step S6), it is determined whether and what kind of cooking motion exists according to the sound information detected by the sound sensor, and a gear of the corresponding range hood is determined, including the steps of:
s8) carrying out fitting processing on the detected specific frequency spectrum sound and time in the current time, judging whether periodicity exists, and if so, entering a step S7; if there is periodicity and the periodicity is within [ t5, t6], then step S9 is entered; if not, go to step S10);
s9) judging the cooking action of an operator as serving; then judging whether the range hood is in the lowest gear or not, if so, maintaining the current gear, and returning to the step S2); if not, the gear is reduced to the lowest gear, and then the step S2 is returned to;
s10) judging whether the range hood is in a middle gear or not, if so, maintaining the current gear, and returning to the step S2); if not, the gear is adjusted to the middle gear, and then step S2 is returned to).
Further, in step S3), if it is determined that the stove is igniting, the method further comprises the steps of:
s11) recording temperature information of a group of two temperature sensors;
s12) judging whether 2 groups of temperature values at different time exist or not, if yes, entering a step S13), if not, waiting for the time delta t, and then returning to the step S11);
s13) calculating a change slope of the detected temperature and judging:
if the temperature rises and the change slope is larger than the preset change slope reference value, starting the range hood to smoke, and returning to the step S2);
if the temperature is decreasing and the change slope is greater than a preset change slope reference value, or the change slope of the temperature is less than or equal to the preset change slope reference value, judging whether the temperature detected last time is less than the preset temperature reference value, if so, not starting a fan system of the range hood, and sending out an ignition failure prompt; if not, starting the smoke exhaust ventilator to smoke, and then returning to the step S2).
Preferably, the temperature sensors have two temperature sensors arranged at a left-right interval, and in step S13), a corresponding operation is performed when the temperature detected by any one of the two temperature sensors meets the judgment condition.
Further, in step S3), if it is determined that the kitchen range is closed, the method further includes the steps of:
s16) recording temperature information of a group of temperature sensors;
s17) judging whether the temperatures detected by the temperature sensors are smaller than a preset reference value Ta or not, if so, closing the range hood, and returning to the step S2); if not, go to step S18);
s18) judging whether the range hood is in the lowest gear or not, if so, maintaining the current gear, and returning to the step S2); if not, the lowest gear is shifted down, and then step S2 is returned to).
Further, in step S3), the frequency spectrum of the pop sound of the gas combustion at the burner of the burner and the frequency spectrum of the sound of the droplet ignited by the burner are stored in advance, and the detected sound is compared with the pre-stored frequency spectrum to determine.
Compared with the prior art, the invention has the advantages that: by combining the sound sensor and the temperature sensor, two sets of detection data with different judgment bases are checked and judged mutually, so that misjudgment caused by pure infrared or misjudgment caused by pure utilization of the sound sensor can be solved, the starting of the range hood can be realized more accurately and rapidly, the situation of large-scale change of oil smoke such as stir-frying, dish containing and the like can be better dealt with, and the user experience can be improved; the comparison of the sound sensor is utilized to judge whether ignition or continuous combustion exists, and then different temperature judgment logics and characteristic values are respectively selected, so that the mutual checking judgment accuracy of two sets of detection data with different judgment bases is realized; and judging and identifying whether actions such as pot turning, dish frying, dish containing and the like are performed according to the periodical changes of the sound and the temperature, so that the fan is intelligently adapted to the adaptation scene.
Drawings
Fig. 1 is a front view schematically showing an installation state of a range hood according to an embodiment of the present invention;
fig. 2 is a schematic side view illustrating an installation state of a range hood according to an embodiment of the present invention;
fig. 3 is a flowchart of a control method of a range hood according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for purposes of describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and because the disclosed embodiments of the present invention may be arranged in different orientations, these directional terms are merely for illustration and should not be construed as limitations, such as "upper", "lower" are not necessarily limited to orientations opposite or coincident with the direction of gravity. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly.
Referring to fig. 1 and 2, a cooking device includes a range hood and a range 200, wherein the range hood includes a range hood body 1 and a temperature sensor 2 and a sound sensor 3 provided on the range hood body 1, the temperature sensor 2 preferably employs a non-contact infrared sensor or a laser sensor, and the sound sensor 3 preferably is a condenser microphone.
The range hood is installed above the cooking bench 100, and the kitchen range 200 has two kitchen ranges arranged at left and right intervals, is arranged at the top of the cooking bench 100, and the cooker 300 is placed on the kitchen range 200 during cooking. The temperature sensors 2 are provided corresponding to the cooktops 200, and thus there are two, respectively located above the corresponding cooktops 200. Alternatively, other numbers and arrangements of cooktops 200 are possible.
The infrared sensor for detecting temperature is generally measured as the average temperature in the field of view, and is generally least susceptible to external interference when the diameter of the target area is larger than the diameter of the field of view (circular area of cone projection) by one time. Therefore, if the cooker 300 and the cookware 300 are not needed, and the cooker 200 is turned on and off, the feedback speed of the on/off and gear shifting of the range hood cannot be considered because the temperature measurement of the field of view is more than the average delay. Therefore, in the invention, by setting the sound sensor 3 as an aid to distinguish whether the cooking range 200 is opened or closed from the cooking action, the range of different characteristic values is taken respectively, which is more beneficial to the improvement of accuracy of the starting or prediction of the possible occurrence process of the oil smoke by using the temperature feedback cooking range 200.
According to the invention, the characteristic sound frequency spectrum is utilized to judge the ignition or continuous combustion of the kitchen range, and the periodical change of temperature and sound is used to judge whether the actions of dish holding, pan-turning quick-frying and the like which influence the oil smoke generation exist, so that the linkage of the kitchen range and the kitchen range is not regulated, and meanwhile, the range can be shifted in advance, and the air quantity is dynamically adapted to the change of the oil smoke generation. The characteristic sound spectrum is obtained and judged by a main control module (not shown) of the range hood.
Specifically, referring to fig. 3, the control method of the range hood of the present invention includes the following steps:
s1) standby, monitoring the starting of the cooking device;
s2) reading information of the sound sensor 3;
s3) judging whether characteristic sounds with specific frequency spectrums exist, if so, judging that the stove 200 is in working combustion, and entering step S4); if there is a sound of a drop ignited by the stove, judging that the stove 200 is igniting, and entering step S11); if the two types of characteristic sounds are not available, the step S16 is performed; the frequency spectrum of the pop sound generated by the combustion of the gas at the burner of the stove and the frequency spectrum of the sound of the drip ignited by the stove can be stored in advance and compared with the monitored real-time sound;
s4) recording temperature information of two temperature sensors 2 (arranged at left and right intervals) within a period of time;
s5) judging whether N groups of temperature values with different time exist, wherein N is the number of preset temperature values to be detected, and if so, entering a step S6); if not, waiting for a time Deltat 1, and then returning to step S4);
s6) fitting the temperature-time function, judging whether the periodicity exists and the periodicity is within the range of [ t1, t2], if so, entering the step S7), and if not, entering the step S8);
s7) judging that an operator (usually a user) is in a pot or stir-frying; then judging whether the range hood is in the maximum gear or not, if so, maintaining the current gear, and returning to the step S2); if not, adjusting to the maximum gear, and then returning to the step S2);
s8) carrying out fitting processing on the detected specific frequency spectrum sound and time in the current time, judging whether periodicity exists, and if so, entering a step S7; if there is periodicity and the periodicity is within [ t5, t6], then step S9 is entered; if not, namely, the temperature and the sound characteristic value have no specific periodicity, the step S10 is carried out;
s9) judging that the user is holding dishes; then judging whether the range hood is in the lowest gear or not, if so, maintaining the current gear, and returning to the step S2); if not, the gear is reduced to the lowest gear, and then the step S2 is returned to;
s10) judging whether the range hood is in a middle gear or not, if so, maintaining the current gear, and returning to the step S2); if not, adjusting the gear to the middle gear, and returning to the step S2);
s11) recording temperature information of a group of two temperature sensors 2;
s12) judging whether 2 groups of temperature values at different time exist or not, if yes, entering a step S13), if not, waiting for the time delta t, and then returning to the step S11);
s13) calculating the change slopes of the temperature values on the left side and the right side, wherein the left side temperature change slope kL= (TL 2-TL 1)/deltat and the right side temperature change slope kR= (TR 2-TR 1)/deltat; TL2 and TL1 are values of two sets of left side temperature sensors 2, wherein TL2 time is later, TR2 and TR1 are values of two sets of right side temperature sensors 2, wherein TR2 time is later;
s14) reading stored left and right temperature change slope reference values kLa and kRa, comparing kL with kLa, kR and kRa respectively, and if |kL| > kLa and kL is positive, starting the range hood to smoke, and then returning to the step S2); if |kL| > kLa and kL is negative, or |kL|+.ltoreq kLa, then step S15 is entered; if kR is larger than kRa and kR is positive, starting the range hood to smoke, and returning to the step S2); if |kR| > kRa and kR is negative, or |kR|+. kRa, then go to step S15);
s15) judging whether TR2 is smaller than a preset right-side temperature reference value Tra and TL2 is smaller than a preset left-side temperature reference value TLa, if so, not starting a fan system of the range hood, and sending out an ignition failure prompt; if not, starting the range hood to smoke, and returning to the step S2);
s16) recording temperature information of a set of two temperature sensors 2;
s17) judging whether the temperatures at the left side and the right side are smaller than a preset reference value Ta, if so, closing the range hood,
then go back to step S2); if not, go to step S18);
s18) judging whether the range hood is in the lowest gear or not, if so, maintaining the current gear, and returning to the step S2); if not, the lowest gear is shifted down, and then step S2 is returned to).
In the steps, the range hood is provided with three gears, namely a lowest gear, a middle gear and a maximum gear, and the rotating speed of a fan of the range hood is sequentially increased. Δt and Δt1 may be equal or unequal.
Claims (7)
1. A control method of a cooking device, the cooking device comprising a range hood and a kitchen range (200) located below the range hood, the range hood comprising a range hood body (1) and a temperature sensor (2) arranged on the range hood body (1), characterized in that: the range hood body (1) is also provided with:
the sound sensors (3) are arranged in positions and in numbers, and the positions and the numbers of the sound sensors (3) correspond to the kitchen ranges (200);
the main control module can judge the working state of the kitchen range (200) and the cooking action of an operator according to the sound detected by the sound sensor (3) and the temperature detected by the temperature sensor (2);
the control method comprises the following steps:
s1) standby, monitoring the starting of the cooking device;
s2) reading information of the sound sensor (3);
s3) judging whether characteristic sounds of a specific frequency spectrum exist or not:
if the gas combustion sound of the stove burner exists, judging that the stove (200) is in working combustion, then judging whether and what kind of cooking action exists by utilizing the values detected by the temperature sensor (2) and the sound sensor (3), and determining the gear of the corresponding range hood;
if the sound of the ignition of the kitchen range exists, the kitchen range (200) is judged to be ignited, then the numerical value detected by the temperature sensor (2) is utilized to judge whether the ignition of the kitchen range (200) is successful, if the ignition is successful, the smoke suction of the kitchen range is controlled, if the ignition is unsuccessful, a fan system of the kitchen range is not started, and an ignition failure prompt is sent out;
and if the two types of characteristic sounds are not available, judging that the kitchen range (200) is closed, and controlling the range hood to be in the lowest gear.
2. The control method of a cooking apparatus according to claim 1, wherein: in step S3), if it is determined that the hob (200) is operating to burn, the method further comprises the steps of:
s4) recording temperature information of the temperature sensor (2) within a period of time;
s5) judging whether N groups of temperature values with different time exist, wherein N is the number of preset temperature values to be detected, and if so, entering a step S6); if not, waiting for a time Deltat 1, and then returning to step S4);
s6) fitting the temperature-time function, judging whether the periodicity exists and the periodicity is within [ t1, t2], if yes, entering step S7), if no, judging whether and what kind of cooking action exists according to the sound information detected by the sound sensor (3), and determining the gear of the corresponding range hood;
s7) judging the cooking action of an operator as in-process pot or quick-frying; then judging whether the range hood is in the maximum gear or not, if so, maintaining the current gear, and returning to the step S2); if not, the maximum gear is adjusted, and then the process returns to step S2).
3. The control method of a cooking apparatus according to claim 2, wherein: in step S6), it is determined whether and what kind of cooking motion exists according to the sound information detected by the sound sensor (3), and a gear of the corresponding range hood is determined, including the steps of:
s8) carrying out fitting processing on the detected specific frequency spectrum sound and time in the current time, judging whether periodicity exists, and if so, entering a step S7; if there is periodicity and the periodicity is within [ t5, t6], then step S9 is entered; if not, go to step S10);
s9) judging the cooking action of an operator as serving; then judging whether the range hood is in the lowest gear or not, if so, maintaining the current gear, and returning to the step S2); if not, the gear is reduced to the lowest gear, and then the step S2 is returned to;
s10) judging whether the range hood is in a middle gear or not, if so, maintaining the current gear, and returning to the step S2); if not, the gear is adjusted to the middle gear, and then step S2 is returned to).
4. The control method of a cooking apparatus according to claim 1, wherein: in step S3), if it is determined that the hob (200) is igniting, the method further comprises the steps of:
s11) recording temperature information of a group of two temperature sensors (2);
s12) judging whether 2 groups of temperature values at different time exist or not, if yes, entering a step S13), if not, waiting for the time delta t, and then returning to the step S11);
s13) calculating a change slope of the detected temperature and judging:
if the temperature rises and the change slope is larger than the preset change slope reference value, starting the range hood to smoke, and returning to the step S2);
if the temperature is decreasing and the change slope is greater than a preset change slope reference value, or the change slope of the temperature is less than or equal to the preset change slope reference value, judging whether the temperature detected last time is less than the preset temperature reference value, if so, not starting a fan system of the range hood, and sending out an ignition failure prompt; if not, starting the smoke exhaust ventilator to smoke, and then returning to the step S2).
5. The control method of a cooking apparatus according to claim 4, wherein: the temperature sensors (2) are provided with two temperature sensors which are arranged at left and right intervals, and in the step S13), corresponding operation is performed when the temperature detected by any one of the two temperature sensors (2) meets the judgment condition.
6. The control method of a cooking apparatus according to claim 1, wherein: in step S3), if it is determined that the hob (200) is closed, the method further comprises the steps of:
s16) recording temperature information of a group of temperature sensors (2);
s17) judging whether the temperatures detected by the temperature sensors (2) are smaller than a preset reference value Ta, if so, closing the range hood, and returning to the step S2); if not, go to step S18);
s18) judging whether the range hood is in the lowest gear or not, if so, maintaining the current gear, and returning to the step S2); if not, the lowest gear is shifted down, and then step S2 is returned to).
7. The control method of a cooking apparatus according to any one of claims 1 to 6, characterized in that: in step S3), the spectrum of the pop sound generated by the gas combustion at the burner of the burner and the spectrum of the sound of the droplet ignited by the burner are stored in advance, and the detected sound is compared with the stored spectrum in advance to determine.
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