CN111380709A - Fault detection method for cooking appliance and cooking appliance - Google Patents
Fault detection method for cooking appliance and cooking appliance Download PDFInfo
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- CN111380709A CN111380709A CN201811622443.9A CN201811622443A CN111380709A CN 111380709 A CN111380709 A CN 111380709A CN 201811622443 A CN201811622443 A CN 201811622443A CN 111380709 A CN111380709 A CN 111380709A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones
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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
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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
- A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
- A47J27/09—Safety 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
- A47J36/00—Parts, details or accessories of cooking-vessels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/007—Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing
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Abstract
The invention provides a fault detection method of a cooking appliance and the cooking appliance. The method comprises the following steps: acquiring a first water level in a water tank in the working process of the water pump or before the water pump works; after the first water level in the water tank is obtained and the water pump starts to work for a preset time, obtaining a second water level of the water tank; and judging whether the difference value of the first water level and the second water level is larger than a preset value, if so, judging that a water channel between the water tank and the cooking space of the cooking appliance is normal, and if not, judging that the water channel is blocked. According to the fault detection method of the cooking appliance, whether the difference value between the first water level and the second water level is larger than a preset value or not is judged in the working process of the water pump, and whether the water channel of the cooking appliance is blocked or not is further determined, so that a user can be timely informed when the water channel is blocked, and the cooking appliance is prevented from being further damaged.
Description
Technical Field
The present invention relates generally to the field of electric heating appliances, and more particularly to a fault detection method of a cooking appliance and a cooking appliance.
Background
A water channel for communicating a cooking space and an internal receiving cavity of a water tank is provided in an existing cooking appliance. The cooking appliance conveys water in the water tank from the water channel to the cooking space through the water pump. When the water channel is blocked, the cooking utensil cannot automatically add water, so that subsequent cooking cannot be carried out. And the cooking utensil of the prior art can not detect whether the water channel is blocked.
Therefore, it is desirable to provide a fault detection method of a cooking appliance and a cooking appliance to at least partially solve the above-mentioned problems.
Disclosure of Invention
In this summary, concepts in a simplified form are introduced that are further described in the detailed description section. This summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
To at least partially solve the above technical problem, according to an aspect of the present invention, there is provided a fault detection method of a cooking appliance, the method including: acquiring a first water level in a water tank in the working process of the water pump or before the water pump works; after the first water level in the water tank is obtained and the water pump starts to work for a preset time, obtaining a second water level of the water tank; and judging whether the difference value of the first water level and the second water level is larger than a preset value, if so, judging that a water channel between the water tank and the cooking space of the cooking appliance is normal, and if not, judging that the water channel is blocked.
According to the fault detection method of the cooking appliance, whether the difference value between the first water level and the second water level is larger than a preset value or not is judged in the working process of the water pump, and whether the water channel of the cooking appliance is blocked or not is further determined, so that a user can be timely informed when the water channel is blocked, and the cooking appliance is prevented from being further damaged.
Optionally, the preset value is a natural number greater than zero.
Optionally, the method further comprises: before the water pump is started to work, determining the cooking water amount required by the cooking utensil for cooking food; if the water channel is judged to be normal, whether the water quantity in the current cooking space is larger than or equal to the cooking water quantity is judged, and if yes, the water pump stops working. Therefore, the phenomenon that water in the cooking space overflows or the cooking taste is influenced due to the fact that too much water is input into the cooking space by the water pump is avoided.
Alternatively, the amount of cooking water is determined according to the cooking mode and the kind and amount of food in the cooking space. Therefore, the cooking water amount does not need to be set by a user, and the operation is simple.
Optionally, the step of judging whether the amount of water in the current cooking space is greater than or equal to the amount of cooking water includes: acquiring the real-time flow of the water pump in the working process of the water pump; determining the water quantity in the current cooking space according to the real-time flow of the water pump and the working duration of the water pump; and judging whether the water amount in the current cooking space is larger than or equal to the cooking water amount. Therefore, the method for determining the water quantity in the current cooking space according to the real-time flow of the water pump and the working time of the water pump is simple, meanwhile, the cooking appliance does not need to be provided with a device for determining the water quantity in the cooking space, and the cooking appliance is simple in structure.
The invention also provides a fault detection method of the cooking appliance, which comprises the following steps: obtaining the working current of the water pump; and if the working current of the water pump is larger than the preset current value, judging that a water channel between the water tank and the cooking space of the cooking appliance is blocked, otherwise, judging that the water channel is normal.
According to the fault detection method of the cooking utensil, whether the working current of the water pump is larger than the preset current value or not is judged in the working process of the water pump, and whether the water channel is blocked or not is further determined, so that a user can be timely informed when the water channel is blocked, and the cooking utensil is prevented from being further damaged.
Optionally, the method further comprises sending a reminding message if the water channel is judged to be blocked; if the water channel is judged to be normal, the heating device in the cooking appliance starts to work to heat the food in the cooking space. Thereby, the user is prompted when the water channel is blocked; when the water channel is normal, the cooking appliance cooks the food in the cooking space.
The invention also provides a cooking appliance, which comprises a water pump, a water tank and a controller, wherein the cooking appliance is provided with a water channel for communicating the internal accommodating cavity of the water tank with the cooking space of the cooking appliance, the controller is connected with the water pump so as to control the water pump to convey water in the water tank to the cooking space, and the controller is used for controlling the cooking appliance by using the fault detection method of the cooking appliance.
According to the cooking appliance, the controller of the cooking appliance uses the fault detection method of the cooking appliance, whether the difference value between the first water level and the second water level is larger than a preset value or not is judged in the working process of the water pump, and whether the water channel of the cooking appliance is blocked or not is further determined, so that a user can be timely informed when the water channel is blocked, and the cooking appliance is prevented from being further damaged.
Optionally, the cooking appliance further comprises a reminder device configured to issue a reminder message when the water channel is blocked. Thereby, the user is prompted when the waterway is blocked.
Optionally, the cooking appliance is an electric rice cooker, an electric pressure cooker or an electric stewpan.
Drawings
In order that the advantages of the invention will be readily understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Understanding that these drawings depict only typical embodiments of the invention and are not therefore to be considered to be limiting of its scope, the invention will be described and explained with additional specificity and detail through the use of the accompanying drawings.
Fig. 1 is a flowchart illustrating a method for detecting a malfunction of a cooking appliance according to a first preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of a cooking process of the cooking appliance of FIG. 1;
fig. 3 is a schematic block diagram of a control system of a cooking appliance according to a first preferred embodiment of the present invention; and
fig. 4 is a schematic structural view of a flow detection and water storage module of the cooking appliance of fig. 3 (in which a water pump, a flow sensor circuit board, and a water channel are shown).
Description of reference numerals:
110: the water pump 120: flow sensor
130: water channel 131: water outlet channel
132: the water inlet channel 140: flow sensor circuit board
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that embodiments of the invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in detail so as not to obscure the embodiments of the invention.
In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the invention. It is apparent that the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. The following detailed description of preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.
Embodiment mode 1
Hereinafter, a cooking utensil according to a preferred embodiment of the present invention will be described. It is understood that the cooking appliance according to the present invention may be an electric cooker (e.g. an IH cooker), an electric pressure cooker, an electric stewpan or other electric heating appliance. The cooking utensil of the present invention may have various functions such as cooking rice, cooking porridge, etc.
The cooking utensil mainly comprises a pot body and a cover body. The cooker body is basically in the shape of a round-corner cuboid and is provided with an inner pot containing part in a cylindrical shape, and the inner pot can be freely placed into or taken out of the inner pot containing part so as to be convenient for cleaning the inner pot. The upper surface of the inner pot has a circular opening for containing materials to be heated, such as rice, soup, etc., into the inner pot. The lid body is substantially in the shape of a rounded rectangular parallelepiped and substantially corresponds to the shape of the pot body. The cover body is pivotally connected to the pot body in an openable and closable manner and is used for covering the pot body. When the cover body is covered on the cooker body, a cooking space is formed between the cover body and the inner pot.
As shown in fig. 3, the cooking appliance of the present embodiment includes a setting module, an indicating module, a heating module, a flow detecting and water storing module, a water level detecting module, a control module, and an internet of things module. The setting module, the indicating module, the heating module, the flow detecting and water adding and storing module and the water level detecting module are electrically connected with the control module together with the Internet of things module so as to send electric signals to the control module or receive control electric signals of the control module.
The cooking appliance includes a controller in which a control module is provided.
The setting module is used for setting cooking parameters. Specifically, the user can set cooking parameters through the setting module. For example, the user selects the type of rice to be cooked, selects the taste of the cooking, sets the timing time, sets the reservation time (the time for completing cooking of food materials), selects the cooking mode (cooking soup, cooking rice, etc.), and the like through the setting module. The user accomplishes the setting of culinary art parameter through setting up the module, and the module of setting up carries the culinary art parameter that the user set up to control module with the form of signal of telecommunication.
The cooking utensil comprises a reminding device, and the indicating module is arranged in the reminding device. The indicating module comprises an indicating lamp (an LED lamp), a four-position eight-section nixie tube and a sounder (a buzzer or a loudspeaker). The indication module is used for displaying cooking parameters set by a user, cooking time (the time length from the current time to the food cooking completion time) and cooking states (the heat preservation state, the rice cooking state and the food cooking completion state) of the cooking appliance in the cooking process. The indication module can also give out voice prompt to the user of the cooking state of the cooking appliance through a buzzer or a loudspeaker. The indication module can also sound through a buzzer or a loudspeaker to give out voice to prompt the user that the cooking appliance is in an abnormal state, such as the blockage of the water channel 130. The control module sends a control electric signal to the indicating module so as to control the indicating module to work.
The heating module comprises a heat generating device for heating an inner pot of the cooking appliance to cook food material in the inner pot. The control module sends a control electric signal to the heating module to control the heating module to work.
As shown in fig. 4, the flow sensing and water adding module includes a water pump 110, a water tank, a flow sensor 120, and a water channel 130 provided in the cooking appliance. The water passage 130 communicates the cooking space of the cooking appliance and the inner receiving cavity of the water tank. Specifically, the waterway 130 includes an outlet channel 131 and an inlet channel 132. The water outlet passage 131 communicates the cooking space with the water outlet of the water pump 110. The water inlet passage 132 communicates the inner receiving chamber of the water tank and the water inlet of the water pump 110. The water channel 130 may be a pipe provided in the cooking appliance. The water tank is used for storing cooking water. The water pump 110 serves to deliver water in the water tank to the cooking space of the cooking appliance through the water passage 130. The flow sensor 120 is electrically connected to a controller of the cooking appliance through a flow sensor circuit board 140. The flow sensor 120 may be an opto-electronic flow sensor. The flow sensor 120 is used to measure the flow rate of the water pump 110.
In this embodiment, the control module sends a control electrical signal to the water pump 110 to start the water pump 110, so that the water pump 110 delivers the water in the water tank to the cooking space of the cooking appliance. The flow sensor 120 is used to detect the flow rate of the water pump 110. The flow sensor 120 sends the flow data of the water pump 110 to the control module in the form of an electrical signal.
The water level detection module comprises a water level sensor arranged in the water tank. The water level detection module is used for detecting the water level in the water tank. The water level detection module transmits water level data in the water tank to the control module in the form of electric signals.
In this embodiment, the user sets the cooking parameters through the control module. The control module then controls the water pump 110 to operate according to the cooking parameters, at which time the water pump 110 delivers the water in the water tank into the cooking space through the water passage 130.
The Internet of things module is used for realizing network connection so as to synchronize the time of the cooking appliance with the current time.
In this embodiment, the cooking appliance further includes a timer. The timer is used for timing. The timer is connected with the control module to send the timing time to the control module.
The cooking appliance of the present embodiment is controlled by a failure detection method of the cooking appliance. As shown in fig. 1 and 2, the fault detection method of the cooking appliance includes:
step S1, before the water pump 110 is operated, a first water level in the water tank is obtained.
In the present embodiment, as shown in fig. 2, the user sets cooking parameters through the setting module in step S21, and then executes step S22.
In step S22, the control module obtains a first water level in the water tank through a water level sensor provided in the water tank, and performs step S23.
Step S23, the control module controls the water pump 110 to start working according to the cooking parameters, at this time, the water pump 110 delivers the water in the water tank to the cooking space through the water channel 130, and at this time, the timer starts to count time.
In this embodiment, the control module obtains the first water level in the water tank through a water level sensor provided in the water tank before the water pump 110 operates.
And step S2, acquiring a second water level of the water tank after the water pump 110 starts to work for a preset time.
As shown in fig. 2, in step S23, the control module controls the water pump 110 to start operating according to the cooking parameters, at this time, the water pump 110 delivers the water in the water tank to the cooking space through the water channel 130, at this time, the timer starts to count time, and step S24 is executed.
Step S24, the water level sensor detects the second water level in the water tank in real time, and step S25 is performed.
Step S25, the control module judges whether the timing duration of the timer is greater than the preset duration, if yes, the step S26 is executed; otherwise, returning to execute the step S25;
step S26, determining whether the difference between the first water level and the second water level is greater than a preset value.
Thus, the second water level is the water level of the water tank after the water pump 110 operates for a preset time period after the first water level is acquired. It can be judged whether the water pump can normally deliver the water in the water tank to the cooking space in the operation of the water pump 110 according to the first and second water levels.
In other embodiments, the step S1 may also obtain the first water level when the water pump 110 starts to operate or during the operation of the water pump 110. Correspondingly, step S2 may obtain the second water level after obtaining the first water level.
Step S3, determining whether a difference between the first water level and the second water level is greater than a preset value, if so, determining that the water channel 130 between the water tank and the cooking space of the cooking appliance is normal, otherwise, determining that the water channel 130 is blocked.
It should be noted that the water tank has a communication port, and the water passage 130 communicates with the internal accommodating chamber of the water tank through the communication port of the water tank. In the case that there is no water leakage between the water tank and the water passage 130, if the water passage 130 is not blocked, the water level in the water tank is continuously decreased and the difference between the first water level and the second water level is continuously increased during the operation of the water pump 110. If the water passage 130 is blocked and the water passage 130 is blocked at the water outlet of the water tank, the water level in the water tank does not drop during the operation of the water pump 110, and the difference between the first water level and the second water level is equal to zero. If the water channel 130 is blocked and the water channel 130 is blocked at a position of the water channel 130 away from the water outlet of the water tank, water in the water tank may enter a space between the blocked position of the water channel 130 and the water outlet of the water tank during operation of the water pump 110. At this time, the water level in the water tank is lowered, and the difference between the first water level and the second water level is equal to the depth of water in the water tank having a volume equal to the volume of the space between the blocked position of the waterway 130 and the water outlet of the water tank. For example, the volume of the space between the blocked position of the water passage 130 and the water outlet of the water tank is 1L. During operation of the water pump 110, a volume of 1L of water in the water tank enters a space between the blocked position of the waterway 130 and the water outlet of the water tank, and at this time, a difference between the first water level and the second water level is equal to a depth of 1L of water in the water tank.
In this embodiment, after the first water level and the second water level are obtained, the control module determines whether a difference between the first water level and the second water level is greater than a preset value. The preset value may be determined according to the volume of the waterway 130 (the volume of water that the waterway 130 can contain). The preset value may be a natural number greater than zero, for example, a natural number of 1. If the difference between the first water level and the second water level is greater than the predetermined value, it indicates that the water pump 110 can normally deliver the water in the water tank to the cooking space through the water passage 130 during the operation of the water pump 110. At this time, the waterway 130 is not blocked, and the waterway 130 is normal. If the difference between the first water level and the second water level is less than or equal to the predetermined value, it indicates that the water pump 110 cannot normally deliver the water in the water tank to the cooking space through the water channel 130, and the water channel 130 is blocked.
For example, the volume of the water channel 130 is 5L. The preset value is 5, and the volume of water in the water tank is increased by 1L every time the water level in the water tank is increased by 1 mm. If the difference between the first water level and the second water level is greater than 5, it indicates that the water pump 110 can normally deliver the water in the water tank to the cooking space through the water passage 130. If the difference between the first water level and the second water level is 0, it indicates that the water passage 130 is blocked at the communication port of the water tank. If the difference between the first water level and the second water level is greater than 0 and less than 5, it indicates that the water passage 130 is blocked at a position other than the communication port.
This embodiment judges whether the difference of first water level and second water level is greater than predetermined value at the water pump working process, and then confirms whether cooking utensil's water course blocks up, when the water course blocks up, can in time inform the user like this, avoids further damaging cooking utensil.
If it is determined that the water channel 130 is not blocked, the water pump 110 is stopped when the water amount Q2 in the cooking space is substantially equal to the water amount Q1 required by the current cooking mode of the cooking appliance, so as to prevent excessive water from being added into the cooking space, which may cause overflow of water in the cooking space or affect the cooking taste due to excessive cooking water.
In the present embodiment, as shown in fig. 2, after the user sets the cooking parameters, before the control module controls the water pump 110 to start operating, that is, step S22 further includes the step of determining, by the control module, the cooking water amount Q1 required for cooking food materials according to the cooking parameters. Correspondingly, during the operation of the water pump 110, i.e., step S24, the control module further determines the water amount Q2 in the cooking space of the cooking appliance in real time. If the difference between the first water level and the second water level is greater than the predetermined value (the water channel 130 is determined to be normal) in step S26, it indicates that the water pump 110 can normally deliver the water in the water tank to the cooking space. At this time, in order to prevent the water pump 110 from inputting too much water into the cooking space, the water in the cooking space overflows, or the cooking taste is affected due to too much water. In the present embodiment, step S29 is executed to determine whether Q2 is greater than or equal to Q1. If so, it is determined that the water amount Q2 in the cooking space is suitable for the current cooking mode to cook the type and amount of food in the current cooking space, and at this time, step S30 is executed, and the control module controls the water pump 110 to stop operating. Otherwise, continue to judge whether Q2 is greater than or equal to Q1.
In other embodiments, the amount of water Q2 in the cooking space of the cooking appliance may be determined after step S26, and then step S29 may be performed.
Preferably, as shown in fig. 2, the step of determining the amount of water in the cooking space of step S24 includes:
in the working process of the water pump 110, the control module obtains the real-time flow of the water pump 110 in real time through the flow sensor; the current amount of water in the cooking space is determined according to the real-time flow rate of the water pump 110 and the length of time that the water pump 110 is operated. The length of time that the water pump 110 is operated may be determined by the length of time counted by the timer. Therefore, the method for determining the current amount of water in the cooking space according to the real-time flow rate of the water pump 110 and the working time of the water pump 110 is simple, and meanwhile, the cooking appliance does not need to be provided with a device for determining the amount of water in the cooking space, so that the cooking appliance is simple in structure.
In the method for detecting a malfunction of a cooking appliance according to the present embodiment, in step S26, if it is determined that the water channel 130 is normal, the control module controls the heat generating device to start operating so as to heat the food in the cooking space. Then, when cooking is completed, the control module controls the indication module to inform the user of the current state of the cooking appliance (cooking completion). As in steps S31 and S32 of fig. 2.
Preferably, as shown in fig. 2, the step of determining the amount of cooking water Q1 required for cooking the food material according to the cooking parameters by the control module of step S22 may include: the control module determines the required cooking water amount Q1 according to the cooking mode set by the user, the type of food materials in the cooking space and the amount of the food materials. Therefore, the cooking water amount does not need to be set by a user, and the operation is simple.
In the present embodiment, as shown in fig. 2, in step S26, if the difference between the first water level and the second water level is less than or equal to the preset value, step S27 is performed.
In step S27, when it is determined that the waterway 130 is clogged, step S28 is executed.
And step S28, the control module controls the indication module to send out a reminding message to prompt the user that the water channel 130 is blocked. At this time, the user may disconnect the power supply of the cooking appliance to prevent the malfunction of the cooking appliance, such as the water pump 110 burning out.
Embodiment mode 2
Embodiment 2 differs from embodiment 1 in that in embodiment 2, the water tank may not be provided with a water level sensor, and the flow rate detecting and water storing module may not be provided with the flow rate sensor 120. In embodiment 2, the water pump 110 is provided with a current sensor. Thus, when the control module controls the water pump 110 to start working, the control module obtains the working current of the water pump 110 in real time through the current sensor, and then the control module judges whether the working current is larger than a preset current value. If so, it indicates that the load of the water pump 110 is large, and the water pump 110 cannot normally deliver water into the cooking space through the water passage 130, and the water passage 130 is blocked. If not, the load of the water pump 110 is small, the water pump 110 can normally convey water into the cooking space through the water channel 130, at this time, the water channel 130 is not blocked, and the water channel 130 is normal.
In the embodiment 2, in the working process of the water pump 110, whether the working current of the water pump 110 is larger than the preset current value is judged, and whether the water channel is blocked is further determined, so that a user can be timely notified when the water channel is blocked, and further damage to the cooking utensil is avoided.
Preferably, the preset current value may be a rated current of the water pump 110.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "component" and the like, when used herein, can refer to either a single part or a combination of parts. Terms such as "mounted," "disposed," and the like, as used herein, may refer to one component as being directly attached to another component or one component as being attached to another component through intervening components. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.
The present invention has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the scope of the described embodiments. It will be appreciated by those skilled in the art that many variations and modifications may be made to the teachings of the invention, which fall within the scope of the invention as claimed.
Claims (10)
1. A method of fault detection of a cooking appliance, the method comprising:
acquiring a first water level in a water tank in the working process of a water pump or before the water pump works;
after the first water level in the water tank is obtained and the water pump starts to work for a preset time, obtaining a second water level of the water tank;
and judging whether the difference value of the first water level and the second water level is larger than a preset value, if so, judging that a water channel between the water tank and the cooking space of the cooking appliance is normal, and if not, judging that the water channel is blocked.
2. The method of claim 1, wherein the preset value is a natural number greater than zero.
3. The method of detecting a malfunction of a cooking appliance according to claim 1, characterized in that the method further comprises:
before the water pump is started to work, determining the cooking water amount required by the cooking utensil for cooking food;
if the water channel is judged to be normal, judging whether the water quantity in the cooking space is larger than or equal to the cooking water quantity or not, and if so, stopping the water pump.
4. The method of claim 3, wherein the amount of cooking water is determined according to a cooking mode and a type and amount of food in the cooking space.
5. The method of claim 3, wherein the step of determining whether the amount of water currently in the cooking space is greater than or equal to the amount of cooking water comprises:
acquiring the real-time flow of the water pump in the working process of the water pump;
determining the current water amount in the cooking space according to the real-time flow of the water pump and the working duration of the water pump;
and judging whether the current water amount in the cooking space is larger than or equal to the cooking water amount.
6. A method of fault detection of a cooking appliance, the method comprising:
obtaining the working current of the water pump;
if the working current of the water pump is larger than a preset current value, judging that a water channel between the water tank and the cooking space of the cooking appliance is blocked, otherwise, judging that the water channel is normal.
7. The method of detecting malfunction of a cooking appliance according to any one of claims 1 to 6, further comprising,
if the water channel is judged to be blocked, sending out reminding information;
and if the water channel is judged to be normal, the heating device in the cooking appliance starts to work to heat the food in the cooking space.
8. A cooking appliance comprising a water pump, a water tank, and a controller, the cooking appliance being provided with a water passage communicating an internal receiving cavity of the water tank and a cooking space of the cooking appliance, the controller being connected to the water pump to control the water pump to deliver water in the water tank to the cooking space, the controller controlling the cooking appliance using the malfunction detection method of the cooking appliance according to any one of claims 1 to 7.
9. The cooking appliance of claim 8, further comprising a reminder device configured to issue a reminder message when the water channel is blocked.
10. The cooking appliance of claim 8, wherein the cooking appliance is an electric rice cooker, an electric pressure cooker, or an electric stewpan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811622443.9A CN111380709A (en) | 2018-12-28 | 2018-12-28 | Fault detection method for cooking appliance and cooking appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811622443.9A CN111380709A (en) | 2018-12-28 | 2018-12-28 | Fault detection method for cooking appliance and cooking appliance |
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