CN111772492A - Electric cooker and fault detection method for exhaust device thereof - Google Patents
Electric cooker and fault detection method for exhaust device thereof Download PDFInfo
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- CN111772492A CN111772492A CN202010585393.2A CN202010585393A CN111772492A CN 111772492 A CN111772492 A CN 111772492A CN 202010585393 A CN202010585393 A CN 202010585393A CN 111772492 A CN111772492 A CN 111772492A
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/32—Time-controlled igniting mechanisms or alarm devices
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/002—Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/004—Cooking-vessels with integral electrical heating means
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/38—Parts, details or accessories of cooking-vessels for withdrawing or condensing cooking vapors from cooking utensils
Abstract
The embodiment of the application discloses electric rice cooker and exhaust apparatus fault detection method thereof, and the exhaust apparatus comprises: the air conditioner comprises an air inlet channel, a fan, a controllable valve and a first driving motor for driving the fan; the temperature sensor is arranged in the electric cooker and used for detecting the internal temperature of the electric cooker; the method comprises the following steps: in the working process of the electric cooker, when the internal temperature reaches a preset temperature value, controlling a first driving motor to operate so as to drive a fan to rotate, and controlling a controllable valve to be opened; and detecting the change condition of the internal temperature, and judging whether the exhaust device has a fault according to the change condition of the internal temperature. Through the scheme of the embodiment, whether the exhaust device breaks down or not is detected timely and quickly, and a technical basis is provided for effectively preventing a large amount of overflowing during porridge cooking.
Description
Technical Field
The present invention relates to a control technology of cooking equipment, in particular, it relates to an electric cooker and its exhaust device fault detection method.
Background
At the present stage, the porridge cooking time by rice cooking needs to be long, and the main reason is that the porridge is easy to overflow the pot when boiling, so the porridge can not be kept in a boiling state all the time, and the time for cooking the porridge is long. In order to realize the purpose of quickly using and cooking porridge, an active exhaust device is additionally arranged on the rice cooker, and the purpose is to open the active exhaust device when the rice cooker is used for quickly cooking porridge at high power so as to exhaust the heat and water vapor in the rice cooker and prevent the porridge from overflowing when the porridge is vigorously boiled.
Similarly, when the active exhaust device is damaged and the rice cooker has the function of quickly cooking porridge, the internal porridge can be vigorously boiled all the time due to the fact that the exhaust function is lost, so that the problem of pot overflow is serious, and therefore it is important to detect whether the active exhaust device fails in time.
Disclosure of Invention
The embodiment of the application provides an electric cooker and a fault detection method of an exhaust device of the electric cooker, which can detect whether the exhaust device has a fault or not timely and quickly and provide a technical basis for effectively preventing a large amount of overflowing during porridge cooking.
The embodiment of the application provides a method for detecting faults of an exhaust device of an electric cooker, wherein the exhaust device can be positioned at the top of the electric cooker and comprises the following steps: the electric cooker comprises an air inlet channel communicated with an external space and the internal space of the electric cooker, a fan used for blowing air to the internal space of the electric cooker after being started, a controllable valve used for controlling the connection and disconnection between the internal space and the external space of the electric cooker, and a first driving motor used for driving the fan; the inner part of the electric cooker can be provided with a temperature sensor for detecting the inner temperature of the electric cooker in real time; the method may include:
in the working process of the electric cooker, when the internal temperature reaches a preset temperature value, controlling the first driving motor to operate so as to drive the fan to rotate, and controlling the controllable valve to be opened;
and detecting the change condition of the internal temperature, and judging whether the exhaust device has a fault according to the change condition of the internal temperature.
In an exemplary embodiment of the present application, the determining whether the exhaust apparatus is malfunctioning according to the variation of the internal temperature may include:
when it is detected that the internal temperature gradually decreases from the preset temperature value, it may be determined that the exhaust apparatus is likely to be normal;
when it is detected that the internal temperature is maintained within the preset temperature floating range, or the internal temperature continues to rise, it may be determined that the exhaust apparatus is malfunctioning.
In an exemplary embodiment of the present application, when it is determined that the exhaust apparatus may be normal, a rate of decrease of the internal temperature within a preset time period is detected, and it is determined whether the exhaust apparatus is actually normal according to a magnitude of the rate of decrease.
In an exemplary embodiment of the present application, the determining whether the exhaust apparatus is actually normal according to the magnitude of the rate of decrease may include:
when the rate of decrease is greater than or equal to a preset rate of decrease threshold, it may be determined that the exhaust apparatus is indeed normal;
when the rate of decrease is less than the rate of decrease threshold, it may be determined that the exhaust apparatus is actually malfunctioning.
In an exemplary embodiment of the present application, the exhaust apparatus may further include a second driving motor for driving the controllable valve, and the method may further include:
when it is determined that the exhaust apparatus is actually out of order, the first driving motor may be controlled to stop operating to stop the fan and to detect the rate of decrease of the internal temperature within a preset time period again;
when the detected decrease rate decreases again, it may be determined that the first drive motor and the fan are normal, and the second drive motor or the controllable valve is malfunctioning;
when the re-detected rate of decrease is unchanged, it may be determined that the first drive motor or the fan is malfunctioning, the second drive motor is normal, and the controllable valve may be normal.
In an exemplary embodiment of the present application, the method may further include: when the controllable valve is determined to be possibly normal, the rotation angle of the second driving motor can be detected, the rotation angle of the controllable valve is judged according to the rotation angle of the motor, and the controllable valve is judged to be in a partially opened state or a fully opened state according to the rotation angle of the controllable valve; the controllable valve may be determined to be malfunctioning when the controllable valve is in a partially opened state, and may be determined to be normal when the controllable valve is in a fully opened state.
In an exemplary embodiment of the present application, the method may further include: when the first driving motor or the fan is determined to be in fault, the first driving motor can be controlled to be started, the working current of the first driving motor is detected, when the working current of the first driving motor is larger than or equal to a preset first current threshold value, the first driving motor can be determined to be normal, and the fan is determined to be in fault; when the working current of the first driving motor is smaller than or equal to a preset second current threshold, determining that the first driving motor is in a fault;
wherein the first current threshold is greater than the second current threshold.
In an exemplary embodiment of the present application, the exhaust apparatus may further include a second driving motor for driving the controllable valve, and the method may further include: when it is determined that the exhaust apparatus is malfunctioning, it is determined that there is a possible malfunction:
the second drive motor fails or the controllable valve fails, and the controllable valve is in a fully closed state currently; and the number of the first and second groups,
the first drive motor is failed or the fan is failed, and the fan is currently in a stopped state.
In an exemplary embodiment of the present application, the method may further include:
detecting the working current of the first driving motor, and when the working current of the first driving motor is greater than or equal to a preset first current threshold, determining that the first driving motor is normal and the fan is in failure; when the working current of the first driving motor is smaller than or equal to a preset second current threshold, determining that the first driving motor is in a fault; wherein the first current threshold is greater than the second current threshold; and/or the presence of a gas in the gas,
detecting the working current of the second driving motor; when the working current of the second driving motor is greater than or equal to a preset third current threshold value, it can be determined that the second driving motor is normal, and the controllable valve is blocked; when the working current of the second driving motor is less than or equal to a preset fourth current threshold, determining that the second driving motor is in a fault; wherein the third current threshold is greater than the fourth current threshold.
The embodiment of the application also provides an electric cooker, which can comprise: an exhaust device, a processor and a computer readable storage medium, wherein the computer readable storage medium stores instructions, the exhaust device can be positioned on the top of the rice cooker, and the exhaust device can comprise: the electric cooker comprises an air inlet channel, a fan, a controllable valve and a first driving motor, wherein the air inlet channel is communicated with an external space and the internal space of the electric cooker; the temperature sensor is arranged in the electric cooker and used for detecting the internal temperature of the electric cooker in real time; the instructions, when executed by the processor, implement any of the above exhaust fault detection methods.
Compared with the related art, the gas exhaust device of the embodiment of the present application may be located at the top of the rice cooker, and the gas exhaust device may include: the electric cooker comprises an air inlet channel communicated with an external space and the internal space of the electric cooker, a fan used for blowing air to the internal space of the electric cooker after being started, a controllable valve used for controlling the connection and disconnection between the internal space and the external space of the electric cooker, and a first driving motor used for driving the fan; the inner part of the electric cooker can be provided with a temperature sensor for detecting the inner temperature of the electric cooker in real time; the method may include: in the working process of the electric cooker, when the internal temperature reaches a preset temperature value, controlling the first driving motor to operate so as to drive the fan to rotate, and controlling the controllable valve to be opened; and detecting the change condition of the internal temperature, and judging whether the exhaust device has a fault according to the change condition of the internal temperature. Through the scheme of the embodiment, whether the exhaust device breaks down or not is detected timely and quickly, and a technical basis is provided for effectively preventing a large amount of overflowing during porridge cooking.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. Other advantages of the present application may be realized and attained by the instrumentalities and combinations particularly pointed out in the specification and the drawings.
Drawings
The accompanying drawings are included to provide an understanding of the present disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the examples serve to explain the principles of the disclosure and not to limit the disclosure.
FIG. 1 is a flow chart of a method for detecting a fault of an exhaust device of an electric cooker according to an embodiment of the present application;
FIG. 2 is a schematic diagram of the temperature variation curve detected by the temperature sensor at the top of the electric cooker in the whole porridge cooking process according to the embodiment of the application;
FIG. 3 is a block diagram of the electric cooker according to the embodiment of the present application.
Detailed Description
The present application describes embodiments, but the description is illustrative rather than limiting and it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Any feature or element of any embodiment may be used in combination with or instead of any other feature or element in any other embodiment, unless expressly limited otherwise.
The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements disclosed in this application may also be combined with any conventional features or elements to form a unique inventive concept as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other inventive aspects to form yet another unique inventive aspect, as defined by the claims. Thus, it should be understood that any of the features shown and/or discussed in this application may be implemented alone or in any suitable combination. Accordingly, the embodiments are not limited except as by the appended claims and their equivalents. Furthermore, various modifications and changes may be made within the scope of the appended claims.
Further, in describing representative embodiments, the specification may have presented the method and/or process as a particular sequence of steps. However, to the extent that the method or process does not rely on the particular order of steps set forth herein, the method or process should not be limited to the particular sequence of steps described. Other orders of steps are possible as will be understood by those of ordinary skill in the art. Therefore, the particular order of the steps set forth in the specification should not be construed as limitations on the claims. Further, the claims directed to the method and/or process should not be limited to the performance of their steps in the order written, and one skilled in the art can readily appreciate that the sequences may be varied and still remain within the spirit and scope of the embodiments of the present application.
The embodiment of the application provides a method for detecting faults of an exhaust device of an electric cooker, wherein the exhaust device can be positioned at the top of the electric cooker and comprises the following steps: the electric cooker comprises an air inlet channel, a fan, a controllable valve (for example, a controllable rotary valve) and a first driving motor, wherein the air inlet channel is communicated with an external space and the internal space of the electric cooker; the inner part of the electric cooker can be provided with a temperature sensor for detecting the inner temperature of the electric cooker in real time; as shown in fig. 1, the method may include steps S101-S102:
s101, in the working process of the electric cooker, when the internal temperature reaches a preset temperature value, controlling the first driving motor to operate so as to drive the fan to rotate, and controlling the controllable valve to be opened;
s102, detecting the change condition of the internal temperature, and judging whether the exhaust device has a fault according to the change condition of the internal temperature.
In the exemplary embodiment of the application, it is known that the time for cooking porridge by the electric cooker at the present stage needs to be long, and the main reason is that the porridge is easy to overflow when boiling, so that the porridge can not be kept in a boiling state all the time, and the time for cooking the porridge is long. In order to realize the purpose of quickly cooking porridge, an exhaust device can be additionally arranged at the top of the rice cooker and mainly comprises a fan, a controllable valve and an air inlet channel. The controllable valve can be closed at ordinary times to prevent the heat inside the rice cooker from losing.
In an exemplary embodiment of the present application, the preset temperature value may satisfy: 90-92 ℃. In order to prevent the porridge in the electric cooker from overflowing, the exhaust device can be started when the temperature reaches the preset temperature.
In the exemplary embodiment of the application, the top of the electric cooker can be provided with a temperature sensor, and the quality of the top exhaust device can be judged according to the change condition of the internal temperature of the electric cooker detected by the top temperature sensor. Specifically, top temperature sensor sets up in one side that electric rice cooker a kind of deep pot lid orientation culinary art chamber, and top temperature sensor is just right with inlet air channel's gas outlet to guarantee, when exhaust apparatus trouble, top temperature sensor can the very first time feedback temperature unusual.
As shown in fig. 2, it is the temperature variation curve detected by the temperature sensor on the top of the electric cooker in the whole process of cooking porridge. When the top exhaust device works normally, the exhaust device is opened when water is about to boil (for example, 90 ℃), and if the exhaust device is normal, the top temperature of the internal space of the electric cooker can be quickly reduced from 90 ℃ to about 70 ℃, and the temperature can be gradually maintained at about 70 ℃ in the exhaust process. When the exhaust at the top is damaged, the temperature at the top will remain the same or continue to rise. Therefore, the change condition of the internal temperature (such as the top temperature) of the electric cooker is judged after the exhaust device is started, and whether the exhaust device fails or not can be judged quickly and accurately.
In an exemplary embodiment of the present application, the determining whether the exhaust apparatus is malfunctioning according to the variation of the internal temperature may include:
when it is detected that the internal temperature gradually decreases from the preset temperature value, it may be determined that the exhaust apparatus is likely to be normal;
when it is detected that the internal temperature is maintained within the preset temperature floating range, or the internal temperature continues to rise, it may be determined that the exhaust apparatus is malfunctioning.
In the exemplary embodiment of the present application, for example, when it is detected that the internal temperature gradually decreases from 90 ℃ (further, after decreasing to the first temperature, the internal temperature is maintained within the floating range of the first temperature, such as at about 70 ℃), it can be basically determined that the exhaust apparatus is normally operated, and the exhaust function is performed, and thus it can be determined that the exhaust apparatus is likely to be normal (but it is not excluded that the controllable valve is only partially opened and cannot be fully opened, and that the fan is normally operated to take cool air and the controllable valve cannot be opened, which are faults). When the internal temperature is kept unchanged (for example, kept at about 90 ℃) or continuously rises, the fault of the exhaust device can be indicated, the power of the rice cooker can be immediately reduced, the porridge is prevented from overflowing, and a fault alarm can be given out.
In an exemplary embodiment of the present application, when it is determined that the exhaust apparatus may be normal, a rate of decrease of the internal temperature within a preset time period is detected, and it is determined whether the exhaust apparatus is actually normal according to a magnitude of the rate of decrease.
In the exemplary embodiment of the present application, it is known that when the controllable valve is only partially opened and cannot be fully opened, if the fan works normally, the internal temperature of the rice cooker is also lowered, and the internal temperature tends to gradually decrease. In addition, when the controllable valve can not be opened, and the fan normally works, the fan can bring cool air in due to work, so that the internal temperature of the electric cooker is reduced, and the trend that the internal temperature is gradually reduced is presented. Moreover, when the controllable valve is opened, the fan fails and can not rotate, and the controllable valve is communicated with the external space, so that the internal hot gas is diffused outwards, the internal temperature of the electric cooker is reduced, and the trend that the internal temperature is gradually reduced is presented. Therefore, when it is detected that the internal temperature gradually decreases from the preset temperature value, it cannot be directly determined that the exhaust apparatus is completely normal, but only possible to be normal. However, the above-mentioned fault phenomenon is not a state where the controllable valve is fully opened and the fan is normally operated, and although the function of cooling and radiating heat is also achieved, the cooling effect is significantly reduced, that is, the reduction rate of the internal temperature is significantly reduced, compared with the normal case of the exhaust device. Therefore, it is possible to determine whether the exhaust apparatus is actually normal or not, based on the magnitude of the rate of decrease.
In an exemplary embodiment of the present application, the determining whether the exhaust apparatus is actually normal according to the magnitude of the rate of decrease may include:
when the rate of decrease is greater than or equal to a preset rate of decrease threshold, it may be determined that the exhaust apparatus is indeed normal;
when the rate of decrease is less than the rate of decrease threshold, it may be determined that the exhaust apparatus is actually malfunctioning.
In the exemplary embodiment of the present application, a large drop rate threshold value may be set, and when the detected drop rate is greater than or equal to the drop rate threshold value, it may be determined that the exhaust apparatus is indeed normal; conversely, when the rate of decrease is less than the rate of decrease threshold, it may be determined that the exhaust device does fail. Further, since the drop rate is reduced, but the temperature is not completely not dropped, it is described that the fan is still blowing cool air inward, or the controllable valve is in an open state, and hot air is still exhausted from the outside, and therefore, when the drop rate is smaller than the drop rate threshold, it may be determined that the fan side fails (may include the fan and the first driving motor) or the controllable valve side fails (may include the available valve and the second driving motor, for example), specifically, that part of the exhaust apparatus fails, and the determination may be performed by the following scheme. The controllable valve can be directly controlled by a main control unit of the electric cooker or can be driven and controlled by a motor, for example, the exhaust device can also comprise a second driving motor for driving the controllable valve. When the controllable valve is directly controlled by the main control unit of the electric cooker, the fault of the controllable valve can be determined after the fault of one side of the controllable valve is judged, and when the controllable valve is controlled by the second driving motor, the fault of the controllable valve or the fault of the second driving motor can be further judged after the fault of the other side of the controllable valve is judged. In an exemplary embodiment of the present application, the exhaust apparatus may further include a second driving motor for driving the controllable valve; the method may further comprise:
when it is determined that the exhaust apparatus is actually out of order, the first driving motor may be controlled to stop operating to stop the fan and to detect the rate of decrease of the internal temperature within a preset time period again;
when the re-detected decrease rate decreases (i.e., the decrease of the internal temperature per unit time period decreases, and even it is possible that the internal temperature does not decrease, i.e., the decrease decreases to 0), it may be determined that the first drive motor and the fan are normal, and the second drive motor or the controllable valve is malfunctioning;
when the re-detected rate of decrease is unchanged, it may be determined that the first drive motor or the fan is malfunctioning, the second drive motor is normal, and the controllable valve may be normal.
In the exemplary embodiment of the present application, when the first driving motor or the fan fails, since the fan may not be in an operating state, the current drop rate is not affected after the fan is stopped, and if the second driving motor or the controllable valve fails, the fan is stopped and then the cool air is stopped from being input to the inside, which inevitably affects the current drop rate. Therefore, when the redetected decrease rate decreases, it is determined that the change in the operating state of the fan affects the current temperature decrease rate, and therefore, it can be determined that both the fan and the first driving motor are normal (the fan can be normally operated, and the decrease rate of the internal temperature is high when the fan is not stopped), and accordingly, it may be a failure of the second driving motor or the controllable valve. When the redetected reduction rate is not changed, it is indicated that the internal temperature is still reduced at the original reduction rate, that is, the change of the working state of the fan does not affect the current temperature reduction rate, and therefore, it can be determined that a controllable valve is inevitably maintained at the temperature reduction rate, that is, the controllable valve is in an open state, so that the internal heat is always transmitted outwards, and therefore, it can be determined that the second driving motor is normal (can drive the controllable valve to open), and the controllable valve is possibly normal (because the controllable valve is partially opened or fully opened, it cannot be determined, and when the controllable valve is partially opened, it is indicated that the controllable valve is possibly stuck in the middle of opening and also belongs to a fault state of the controllable valve).
In the exemplary embodiment of the present application, the above embodiment scheme can quickly and accurately determine whether the first driving motor or the fan fails or whether the second driving motor or the controllable valve fails according to the determination of the internal temperature drop rate in combination with the control of the fan operation state.
In an exemplary embodiment of the present application, how to further determine whether the controllable valve is partially opened or fully opened may be implemented by the following scheme.
In an exemplary embodiment of the present application, the method may further include: when the controllable valve is determined to be possibly normal, the rotation angle of the second driving motor can be detected, the rotation angle of the controllable valve is judged according to the rotation angle of the motor, and the controllable valve is judged to be in a partially opened state or a fully opened state according to the rotation angle of the controllable valve; the controllable valve may be determined to be malfunctioning when the controllable valve is in a partially opened state, and may be determined to be normal when the controllable valve is in a fully opened state.
In the exemplary embodiment of the present application, since the rotation angle of the second driving motor is directly related to the opening angle of the controllable valve, by detecting the rotation angle of the second driving motor (i.e., the rotation angle of the driving shaft of the second driving motor, which can be specifically calculated by the number of rotation turns of the driving shaft, i.e., the number of rotation turns × 360 °) during the starting process of the secondary exhaust device, the opening angle of the controllable valve can be accurately calculated according to the rotation angle and the reduction ratio of the second driving motor, and the opening angle is compared with a preset full opening angle (i.e., the opening angle when the controllable valve is completely opened), it can be determined whether the controllable valve is in a partially opened state or a fully opened state.
In an exemplary embodiment of the present application, the second driving motor may be a stepping motor, and the opening angle of the controllable valve may be determined by the number of steps of the stepping motor, so that it may be determined whether the controllable valve is in a partially opened state or a fully opened state.
In the exemplary embodiment of the present application, when it is determined that the first driving motor is failed or the fan is failed, it may be determined whether the first driving motor is failed or the fan is failed, based on the magnitude of the operating current of the first driving motor.
In an exemplary embodiment of the present application, the method may further include: when the first driving motor or the fan is determined to be in fault, the first driving motor can be controlled to be started, the working current of the first driving motor is detected, when the working current of the first driving motor is larger than or equal to a preset first current threshold value, the first driving motor can be determined to be normal, and the fan is determined to be in fault; when the working current of the first driving motor is smaller than or equal to a preset second current threshold, determining that the first driving motor is in a fault;
wherein the first current threshold is greater than the second current threshold.
In an exemplary embodiment of the present application, the first current threshold may be a preset larger current value, and the second current threshold may be a preset smaller current value.
In an exemplary embodiment of the application, when the working current of the first driving motor is greater than or equal to a preset first current threshold, it is indicated that the first driving motor can normally operate, but a locked-rotor phenomenon occurs, which may be a fan failure, for example, if the fan is jammed, the first driving motor cannot drive the fan to rotate, so that a locked-rotor current greater than or equal to the first current threshold is generated. When the working current of the first driving motor is smaller than or equal to the second current threshold, the working current of the first driving motor is very small and cannot be started normally, so that the first driving motor can be judged to be in a fault.
In an exemplary embodiment of the present application, after it is determined that the exhaust apparatus is malfunctioning according to whether the internal temperature is maintained within the floating range of the preset temperature or the internal temperature continues to rise, it may be further determined whether the first driving motor or the fan is malfunctioning or the second driving motor or the controllable valve is malfunctioning by the following scheme.
In an exemplary embodiment of the present application, the exhaust apparatus may further include a second driving motor for driving the controllable valve; the method may further comprise: when it is determined that the exhaust apparatus is malfunctioning, it is determined that there is a possible malfunction:
the second drive motor fails or the controllable valve fails, and the controllable valve is in a fully closed state currently; and the number of the first and second groups,
the first drive motor is failed or the fan is failed, and the fan is currently in a stopped state.
In the exemplary embodiment of the present application, if the internal temperature is maintained within the floating range of the preset temperature, or if the internal temperature continuously rises, it indicates that the fan does not blow cool air inwards, and the controllable valve does not open to transfer heat outwards. Therefore, the fan side (including the first driving motor and the fan) and the controllable valve side (including the second driving motor and the controllable valve) both have faults, but whether the first driving motor is in fault or the fan is in fault in the fan side, and whether the second driving motor is in fault or the controllable valve is in fault in the controllable valve side can be judged in detail through the following scheme.
In an exemplary embodiment of the present application, the method may further include:
detecting the working current of the first driving motor, and when the working current of the first driving motor is greater than or equal to a preset first current threshold, determining that the first driving motor is normal and the fan is in failure; when the working current of the first driving motor is smaller than or equal to a preset second current threshold, determining that the first driving motor is in a fault; wherein the first current threshold is greater than the second current threshold; and/or the presence of a gas in the gas,
detecting the working current of the second driving motor; when the working current of the second driving motor is greater than or equal to a preset third current threshold value, it can be determined that the second driving motor is normal, and the controllable valve is blocked; when the working current of the second driving motor is less than or equal to a preset fourth current threshold, determining that the second driving motor is in a fault; wherein the third current threshold is greater than the fourth current threshold.
In an exemplary embodiment of the application, when the working current of the first driving motor is greater than or equal to a preset first current threshold, it is indicated that the first driving motor can normally operate, but a locked-rotor phenomenon occurs, which may be a fan failure, for example, if the fan is jammed, the first driving motor cannot drive the fan to rotate, so that a locked-rotor current greater than or equal to the first current threshold is generated. When the working current of the first driving motor is smaller than or equal to the second current threshold, the working current of the first driving motor is very small and cannot be started normally, so that the first driving motor can be judged to be in a fault.
In the exemplary embodiment of the application, when the working current of the first driving motor is greater than or equal to the second current threshold and is less than the first current threshold, it can be determined that the first driving motor and the fan are both normal, at this time, it can be determined that an air inlet channel used for blowing air to the inside by the fan is possibly blocked, and a user can be reminded to dredge the air inlet channel.
In an exemplary embodiment of the present application, the third current threshold may be a preset larger current value, and the fourth current threshold may be a preset smaller current value.
In an exemplary embodiment of the present application, when the working current of the second driving motor is greater than or equal to a preset third current threshold, it indicates that the second driving motor can normally operate, but a locked rotor phenomenon occurs, which may be a failure of the controllable valve, and if the controllable valve is stuck, the second driving motor cannot drive the controllable valve to rotate, so as to generate a locked rotor current greater than or equal to the third current threshold. When the working current of the second driving motor is smaller than or equal to the fourth current threshold, the working current of the second driving motor is very small and cannot be started normally, so that the second driving motor can be judged to be in fault.
In the exemplary embodiment of the present application, when any component in the exhaust device is detected to be out of order through the above-mentioned embodiment, an alarm can be given, and the detailed failure component and the possible failure cause can be displayed.
In the exemplary embodiment of the application, the speed can be fast through the above embodiment scheme. Any detailed fault condition when the exhaust device is in fault is accurately judged, intelligent and active fault detection and troubleshooting of the electric cooker are achieved, so that a user can quickly and timely troubleshoot faults, overflow can be avoided, and user experience is improved.
The embodiment of the present application further provides an electric cooker 1, as shown in fig. 3, which may include: an exhaust device 11, a processor 12 and a computer readable storage medium 13, wherein the computer readable storage medium 13 stores instructions, the exhaust device 11 may be located on the top of the rice cooker, and the exhaust device 11 may include: an air inlet channel 111 for communicating an external space with an internal space of the electric cooker, a fan 112 for blowing air to the internal space of the electric cooker after being started, a controllable valve 113 for controlling the communication and disconnection between the internal space and the external space of the electric cooker, and a first driving motor 114 for driving the fan; the temperature sensor 14 is arranged in the electric cooker and used for detecting the internal temperature of the electric cooker in real time; the instructions, when executed by the processor, implement any of the above exhaust fault detection methods.
In the exemplary embodiments of the present application, any of the above method embodiments may be applicable to the rice cooker embodiment, and are not described herein again.
In the exemplary embodiments of the present application, the embodiments of the present application include at least the following advantages:
1. the scheme of the embodiment is to take the result as a judgment standard. The direct influence of the failure of the top exhaust device is the temperature of the top in the electric cooker, and the judgment of the top temperature of the electric cooker in the scheme of the embodiment is the method which can most embody whether the exhaust device normally operates. According to the scheme of the embodiment, the fault of the exhaust device is judged through obvious temperature changes detected by the top temperature sensor before and after the exhaust device is started, the top temperature change is the final result caused by exhaust, the generated reason is demonstrated by the final result, and the generated conclusion is more reliable and direct.
2. The present embodiment is a method for determining whether or not the entire function of the top exhaust device has failed. The top exhaust device is a functional component which is composed of a fan, a controllable valve and an air inlet channel, the reason of the fault can be the fault of the fan, the controllable valve is not opened, the channel is blocked, and the fault can be detected more comprehensively through temperature detection, and can be reflected through temperature change as long as the fault in the exhaust device is detected, so that the comprehensive and reliable detection of the fault of the exhaust device is realized, and the detection effect is better.
3. The scheme of the embodiment is realized by software on the basis of the existing hardware, and no new hardware is added on the cost, so that the method has absolute advantages. The temperature sensor is a hardware facility carried by the machine itself, so that the cost is not increased.
4. The top temperature directly determines the problem that the electric cooker can not overflow, the temperature change detected by the top temperature sensor is judged, the fault can be judged more quickly and accurately, and the phenomenon that the electric cooker overflows is prevented in time.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
Claims (10)
1. The method for detecting the fault of the exhaust device of the electric cooker is characterized in that the exhaust device is positioned at the top of the electric cooker and comprises the following steps: the electric cooker comprises an air inlet channel, a fan, a controllable valve and a first driving motor, wherein the air inlet channel is communicated with an external space and the internal space of the electric cooker; the temperature sensor is arranged in the electric cooker and used for detecting the internal temperature of the electric cooker in real time; the method comprises the following steps:
in the working process of the electric cooker, when the internal temperature reaches a preset temperature value, controlling the first driving motor to operate so as to drive the fan to rotate, and controlling the controllable valve to be opened;
and detecting the change condition of the internal temperature, and judging whether the exhaust device has a fault according to the change condition of the internal temperature.
2. The exhaust device fault detection method of electric cooker as claimed in claim 1, wherein said determining whether said exhaust device is faulty or not according to the variation of said internal temperature comprises:
when it is detected that the internal temperature gradually decreases from the preset temperature value, determining that the exhaust apparatus is likely to be normal;
and when it is detected that the internal temperature is maintained within a floating range of the preset temperature, or the internal temperature continues to rise, determining that the exhaust apparatus is malfunctioning.
3. The method as claimed in claim 2, wherein when the exhaust device is determined to be normal, the method detects the rate of decrease of the internal temperature within a preset time period, and determines whether the exhaust device is normal or not according to the magnitude of the rate of decrease.
4. The method for detecting faults of an exhaust device of an electric cooker as claimed in claim 3, wherein said determining whether the exhaust device is actually normal according to the magnitude of the rate of decrease comprises:
when the descending rate is larger than or equal to a preset descending rate threshold value, determining that the exhaust device is really normal;
determining that the exhaust apparatus is actually malfunctioning when the rate of decrease is less than the rate of decrease threshold.
5. The exhaust failure detection method of an electric rice cooker as claimed in claim 4, wherein said exhaust further comprises a second driving motor for driving said controllable valve, said method further comprising:
when the exhaust device is judged to be actually failed, controlling the first driving motor to stop running so as to stop the fan and detecting the reduction rate of the internal temperature within the preset time again;
when the redetected descending rate is reduced, determining that the first driving motor and the fan are normal, and the second driving motor or the controllable valve is in failure;
and when the redetected reduction rate is not changed, determining that the first driving motor or the fan is in failure, the second driving motor is normal, and the controllable valve is possibly normal.
6. The exhaust device fault detection method of an electric cooker as claimed in claim 5, characterized in that said method further comprises: when the controllable valve is determined to be possibly normal, detecting the rotation angle of the second driving motor, judging the rotation angle of the controllable valve according to the rotation angle of the motor, and judging whether the controllable valve is in a partially opened state or a fully opened state according to the rotation angle of the controllable valve; and when the controllable valve is in a partially opened state, determining that the controllable valve is in a fault state, and when the controllable valve is in a fully opened state, determining that the controllable valve is normal.
7. The exhaust device fault detection method of an electric cooker as claimed in claim 5, characterized in that said method further comprises: when the first driving motor or the fan is determined to be in fault, controlling the first driving motor to start, detecting the working current of the first driving motor, and when the working current of the first driving motor is larger than or equal to a preset first current threshold, determining that the first driving motor is normal and the fan is in fault; when the working current of the first driving motor is smaller than or equal to a preset second current threshold value, determining that the first driving motor has a fault;
wherein the first current threshold is greater than the second current threshold.
8. The exhaust failure detection method of an electric rice cooker as claimed in claim 2, wherein said exhaust further comprises a second driving motor for driving said controllable valve, said method further comprising: when it is determined that the exhaust apparatus is malfunctioning, it is determined that there is a possible malfunction:
the second drive motor fails or the controllable valve fails, and the controllable valve is in a fully closed state currently; and the number of the first and second groups,
the first drive motor is failed or the fan is failed, and the fan is currently in a stopped state.
9. The exhaust device fault detection method of an electric cooker as claimed in claim 8, characterized in that said method further comprises:
detecting the working current of the first driving motor, and when the working current of the first driving motor is greater than or equal to a preset first current threshold, determining that the first driving motor is normal and the fan is in failure; when the working current of the first driving motor is smaller than or equal to a preset second current threshold value, determining that the first driving motor has a fault; wherein the first current threshold is greater than the second current threshold; and/or the presence of a gas in the gas,
detecting the working current of the second driving motor; when the working current of the second driving motor is larger than or equal to a preset third current threshold value, determining that the second driving motor is normal and the controllable valve is blocked; when the working current of the second driving motor is smaller than or equal to a preset fourth current threshold, determining that the second driving motor has a fault; wherein the third current threshold is greater than the fourth current threshold.
10. An electric rice cooker comprising: an exhaust device, a processor and a computer readable storage medium, wherein instructions are stored in the computer readable storage medium, the exhaust device is positioned on the top of the rice cooker, and the exhaust device comprises: the electric cooker comprises an air inlet channel communicated with an external space and the internal space of the electric cooker, a fan used for blowing air to the internal space of the electric cooker after being started, a controllable valve used for controlling the connection and disconnection between the internal space and the external space of the electric cooker, and a first driving motor used for driving the fan; the temperature sensor is arranged in the electric cooker and used for detecting the internal temperature of the electric cooker in real time; the instructions, when executed by the processor, implement the exhaust fault detection method of any of claims 1-9.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112294101A (en) * | 2020-10-27 | 2021-02-02 | 珠海格力电器股份有限公司 | Cooking equipment, steam valve detection method and device thereof, and storage medium |
| CN112315327A (en) * | 2020-10-27 | 2021-02-05 | 珠海格力电器股份有限公司 | Cooking apparatus, control method thereof, control device thereof, and computer-readable storage medium |
| CN115363420A (en) * | 2022-08-23 | 2022-11-22 | 珠海格力电器股份有限公司 | Method and device for identifying fault of rapid pressure relief function, storage medium and cooking utensil |
| CN115715645A (en) * | 2022-12-02 | 2023-02-28 | 格力大松（宿迁）生活电器有限公司 | Electric cooker capable of automatically opening cover and breaking bubbles and control method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001087126A (en) * | 1999-09-22 | 2001-04-03 | Zojirushi Corp | Heat insulating device for rice cooking jar |
| CN2568096Y (en) * | 2002-07-15 | 2003-08-27 | 广东美的集团股份有限公司 | Steam discharge controllable electrical rice cooker cover |
| CN109091020A (en) * | 2018-10-23 | 2018-12-28 | 珠海格力电器股份有限公司 | Steam valve and electric cooker |
| CN109303477A (en) * | 2017-07-28 | 2019-02-05 | 浙江绍兴苏泊尔生活电器有限公司 | Control method of cooking appliance |
| CN110384395A (en) * | 2018-04-18 | 2019-10-29 | 佛山市顺德区美的电热电器制造有限公司 | The method for detecting abnormality and detection device of pressure cooking appliance and its exhaust valve |
| CN111297184A (en) * | 2018-12-12 | 2020-06-19 | 浙江绍兴苏泊尔生活电器有限公司 | Method and device for detecting air pump and cooking appliance |
-
2020
- 2020-06-24 CN CN202010585393.2A patent/CN111772492A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001087126A (en) * | 1999-09-22 | 2001-04-03 | Zojirushi Corp | Heat insulating device for rice cooking jar |
| CN2568096Y (en) * | 2002-07-15 | 2003-08-27 | 广东美的集团股份有限公司 | Steam discharge controllable electrical rice cooker cover |
| CN109303477A (en) * | 2017-07-28 | 2019-02-05 | 浙江绍兴苏泊尔生活电器有限公司 | Control method of cooking appliance |
| CN110384395A (en) * | 2018-04-18 | 2019-10-29 | 佛山市顺德区美的电热电器制造有限公司 | The method for detecting abnormality and detection device of pressure cooking appliance and its exhaust valve |
| CN109091020A (en) * | 2018-10-23 | 2018-12-28 | 珠海格力电器股份有限公司 | Steam valve and electric cooker |
| CN111297184A (en) * | 2018-12-12 | 2020-06-19 | 浙江绍兴苏泊尔生活电器有限公司 | Method and device for detecting air pump and cooking appliance |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112294101A (en) * | 2020-10-27 | 2021-02-02 | 珠海格力电器股份有限公司 | Cooking equipment, steam valve detection method and device thereof, and storage medium |
| CN112315327A (en) * | 2020-10-27 | 2021-02-05 | 珠海格力电器股份有限公司 | Cooking apparatus, control method thereof, control device thereof, and computer-readable storage medium |
| CN112294101B (en) * | 2020-10-27 | 2021-08-24 | 珠海格力电器股份有限公司 | Cooking equipment, steam valve detection method and device thereof, and storage medium |
| CN115363420A (en) * | 2022-08-23 | 2022-11-22 | 珠海格力电器股份有限公司 | Method and device for identifying fault of rapid pressure relief function, storage medium and cooking utensil |
| CN115363420B (en) * | 2022-08-23 | 2023-04-07 | 珠海格力电器股份有限公司 | Method and device for identifying fault of rapid pressure relief function, storage medium and cooking utensil |
| CN115715645A (en) * | 2022-12-02 | 2023-02-28 | 格力大松（宿迁）生活电器有限公司 | Electric cooker capable of automatically opening cover and breaking bubbles and control method thereof |
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