CN113116162B - Cooking appliance and control method of cooking appliance - Google Patents
Cooking appliance and control method of cooking appliance Download PDFInfo
- Publication number
- CN113116162B CN113116162B CN201911417420.9A CN201911417420A CN113116162B CN 113116162 B CN113116162 B CN 113116162B CN 201911417420 A CN201911417420 A CN 201911417420A CN 113116162 B CN113116162 B CN 113116162B
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- cooking appliance
- movable
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- capacitor
- value
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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
-
- 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
- A47J27/0802—Control mechanisms for pressure-cookers
Abstract
The invention discloses a cooking appliance and a control method of the cooking appliance. The cooking utensil comprises a cooking utensil body, a movable part, a driving part, a first capacitor pole plate, a second capacitor pole plate and a controller; the movable part is configured to be movable with respect to the cooking appliance body and has a plurality of predetermined positions; the driving part is configured to drive the movable part to move; the first capacitor plate is arranged on the movable part; the second capacitor plate is arranged on the cooking utensil body, and the first capacitor plate moves along with the movable part to a position corresponding to the second capacitor plate so as to form a parallel plate capacitor; the controller is configured to control the driving part to stop the movable part at a predetermined position in accordance with a capacitance value of the parallel plate capacitor. Therefore, the first capacitance plate and the second capacitance plate form a parallel plate capacitor, and whether the movable part rotates to a preset position can be judged by detecting the capacitance value of the parallel plate capacitor, so that the cooking utensil is simple in structure and high in reliability.
Description
Technical Field
The invention relates to the field of cooking appliances, in particular to a cooking appliance and a control method of the cooking appliance.
Background
Some cooking appliances are provided with a movable part which moves along a designated path under the drive of a motor, and a cooking appliance control board needs to identify the position of the movable part. In one cooking appliance designed by the applicant, the cooking appliance is provided with a detection device having a transmitting end and a receiving end spaced apart from each other and disposed facing each other, the transmitting end being capable of transmitting waves (for example ultrasonic waves, optical waves, infrared rays, etc.) towards the receiving end. A through hole is reserved on the movable part. The movable member is continuously disposed to block the wave of the transmitting end, and only the through hole is permeable to the wave transmitted from the transmitting end. During the movement of the movable member, the wave at the transmitting end is blocked by the movable member from reaching the receiving end before it moves to the predetermined position. When the movable member moves to a predetermined position, the wave emitted from the emitting end reaches the receiving end through the through hole, so that the controller electrically connected to the receiving end can receive the positioning signal. The controller controls the movable member to stop at the predetermined position at this time.
However, in the above arrangement, the movable member needs to be continuously arranged on the moving track thereof to fill the moving track thereof, and further the waveform of the transmitting end is blocked, and the judgment result of whether the movable member moves to the predetermined position is not accurate enough for the case that the movable member cannot be filled or does not need to be filled.
Therefore, the invention provides a cooking appliance and a control method of the cooking appliance, which are used for solving the problems in the prior art.
Disclosure of Invention
In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description. The summary of the invention is not intended to define the key features and 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.
The present invention provides a cooking appliance, comprising: the cooking appliance comprises a cooking appliance body, wherein a cooking cavity is arranged in the cooking appliance body; a movable member configured to be movable with respect to the cooking appliance body and having a plurality of predetermined positions; a driving part configured to drive the movable part to move; a first capacitive plate disposed on the movable member; the first capacitor plate is arranged to move along with the movable part to a position corresponding to the second capacitor plate so as to form a parallel plate capacitor; and a controller configured to control the driving part to stop the movable part at a predetermined position according to a capacitance value of the parallel plate capacitor.
According to the cooking utensil provided by the invention, the first capacitance polar plate and the second capacitance polar plate form the parallel plate capacitor, and whether the movable part rotates to the preset position can be judged by detecting the capacitance value of the parallel plate capacitor, so that the cooking utensil is simple in structure and high in reliability.
Optionally, the movable member is arranged to rotate in a circumferential direction about the pivot axis, the plurality of predetermined positions being evenly distributed circumferentially, the first capacitive plate being moved in the circumferential direction with rotation of the movable member. Therefore, the cooking utensil is simple in structure and easy to realize.
Optionally, the second capacitive plate is electrically connected to the controller. Therefore, the second capacitor plate does not rotate, and the controller is electrically connected with the second capacitor plate, so that the structure is simple and the reliability is high.
Optionally, the second capacitive plate is a probe of a capacitive sensor. Therefore, the second capacitor plate is convenient to select.
Optionally, the cooking appliance includes a plurality of food material containers configured to move with rotation of the movable member, and the number of the first capacitor plates is the same as the number of the food material containers. Thereby, each food material accommodation portion may be used for placing a different food material.
The invention also provides a control method of the cooking appliance, wherein the cooking appliance is the cooking appliance, and the control method comprises the following steps: controlling the driving part to start moving the movable part; the driving part is controlled to stop the movable part at a predetermined position according to the capacitance value of the parallel plate capacitor.
According to the control method of the cooking utensil, the first capacitance polar plate and the second capacitance polar plate form the parallel plate capacitor, whether the movable part rotates to the preset position can be judged by detecting the capacitance value of the parallel plate capacitor, and the cooking utensil is simple in structure and high in reliability.
Optionally, the step of controlling the driving part to stop the movable part at the predetermined position according to the capacitance value of the parallel plate capacitor includes:
detecting the capacitance value in real time, converting the capacitance value into a corresponding AD value, recording the corresponding AD value a0 in the moving process of the movable component, judging that the movable component moves to a preset position when the detected a0 reaches a capacitance preset value, and controlling the movable component to stop moving.
Thereby, the movable member can be accurately controlled to stop at the predetermined position.
Optionally, the step of controlling the driving part to stop the movable part at the predetermined position according to the capacitance value of the parallel plate capacitor includes:
and detecting the capacitance value in real time, converting the capacitance value into a corresponding AD value, calculating and recording a corresponding AD value change rate delta b in the moving process of the movable component, judging that the movable component moves to a preset position when the detected delta b reaches a change rate preset value, and controlling the movable component to stop moving.
Thereby, the movable member can be accurately controlled to stop at the predetermined position.
Drawings
The following drawings are included to provide an understanding of the invention and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and their description to explain the principles of the invention.
In the accompanying drawings:
fig. 1 is a schematic structural view of a cooking appliance body and movable parts of a cooking appliance according to an embodiment of the present invention;
fig. 2 is a block diagram of a control system of the cooking appliance of fig. 1; and
fig. 3 is a flow chart illustrating a control method of the cooking appliance of fig. 1.
Description of the reference numerals
110: the movable member 120: cooking utensil body
130: first capacitor plate 140: second capacitor plate
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 the invention may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular is intended to include the plural unless the context clearly indicates otherwise. Furthermore, it will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Exemplary embodiments according to the present invention will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It should be appreciated that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art. In the drawings, thicknesses of layers and regions are exaggerated for clarity, and the same reference numerals are used to denote the same elements, so that descriptions thereof will be omitted.
A cooking appliance according to a preferred embodiment of the present invention will be described below. It will be appreciated that the cooking appliance according to the present invention may be an electromagnetically heated electric rice cooker, electric pressure cooker, electric stewpot or other electric heating appliance. And the cooking appliance according to the present invention may have various functions of cooking porridge, etc., in addition to the function of cooking rice.
The cooking appliance mainly includes a movable member 110 and a cooking appliance body 120. The cooking appliance body 120 may include a pot body and a cover body. The pot body is provided with a cylindrical inner pot containing part, and the inner pot can be freely placed in or taken out from the inner pot containing part, so that the inner pot can be conveniently cleaned. The upper surface of the inner pot has a circular opening for holding materials to be heated, such as rice, soup, etc., in the inner pot. The cover body is pivotally connected to the cooker body in an openable and closable manner and is used for covering the cooker body. When the cover body is covered on the cooker body, a cooking cavity is formed between the cover body and the inner cooker.
As shown in fig. 1, the cooking appliance body 120 has an accommodating space. The receiving space may be a cylindrical space. In the receiving space, a movable member 110 movable with respect to the cooking appliance body 120 may be provided. The movable member 110 may also be of cylindrical configuration with an open upper portion to facilitate placement of the pre-packaged food items to the movable member. A partition such as a partition plate or a partition groove may be provided in the movable member 110, preferably extending in a radial direction so as to be radially distributed. The partition circumferentially partitions the inner space of the movable member into a plurality of food material accommodation portions. Thus, each food material receptacle may be used for placing different food materials, e.g. different food material receptacles are used for placing different kinds of rice, or other food materials.
In this embodiment, the food material accommodation portion is used for accommodating pre-packaged food materials. The pre-packaged food material may have a barcode such as a bar code or a two-dimensional code disposed thereon. The information of the bar code may include food material information within the pre-packaged food material, such as information of the kind of rice within the pre-packaged food material, etc.
Preferably, the radius dimension of the movable part 110 ranges from 1cm to 20cm. Thereby, the degree of freedom of selection of the size of the movable member 110 is increased.
Preferably, the receiving space of the cooking appliance body 120 and the movable member 110 are disposed to be substantially coaxial. Also, the outer diameter of the movable member 110 may be set to be slightly smaller than the inner diameter of the cooking space of the cooking appliance body 120, thereby forming an annular space between the movable member 110 and the cooking appliance body 120. It is understood that in the embodiment not shown, the receiving spaces of the movable member 110 and the cooking appliance body 120 may be provided to be different shafts.
The cooking appliance further includes a driving part. The driving member may be a driving motor. The output shaft of the driving motor is directly connected to the central shaft of the movable member 110 or transmits driving force through a transmission device to drive the movable member 110 to rotate about its axis. In this way, the movable member 110 is rotatably provided. The driving motor may rotate the movable member 110 to a predetermined position.
In this embodiment, the cooking appliance further includes a capacitor assembly and a controller. The capacitive assembly includes a first capacitive plate 130 and a second capacitive plate 140. The first capacitive plate 130 is disposed on the movable member 110, and the second capacitive plate 140 is disposed on the cooking appliance body 120. The position of the first capacitor plate 130 and the position of the second capacitor plate 140 are substantially the same in the axial direction of the movable member 110, in other words, the first capacitor plate 130 and the second capacitor plate 140 are disposed at substantially the same height.
Since the second capacitive plate 140 is provided on the cooking appliance body 120 and does not rotate, it is preferable that the controller is provided to be electrically connected with the second capacitive plate 140. Thus, the structure of the electrical connection between the controller and the second capacitor plate 140 is relatively simple. The first capacitive plate 130 is not grounded, nor connected to a controller, but forms a parallel plate capacitor with the second capacitive plate 140. In an embodiment not shown, the controller may also be electrically connected to the first capacitive plate 130, in which case the second capacitive plate 140 is not electrically connected to the controller, nor to ground.
In this embodiment, when the movable member 110 rotates, the first capacitor plate 130 rotates with the movable member 110. In this way, the relative position between the first capacitor plate 130 and the second capacitor plate 140 changes, and thus the capacitance between the first capacitor plate 130 and the second capacitor plate 140 changes.
The controller may determine whether the movable member 110 rotates to a predetermined position by transmitting a voltage to the first capacitor plate 130 and detecting a capacitance value between the first capacitor plate 130 and the second capacitor plate 140 in real time, thereby determining a position of the first capacitor plate 130 according to the capacitance value. If the detected capacitance value reaches the capacitance preset value, it is determined that the movable member 110 is rotated to a predetermined position. In this way, by detecting the capacitance value of the parallel plate capacitor constituted by the first capacitance plate 130 and the second capacitance plate 140, it is possible to determine whether the movable member 110 is rotated to a predetermined position, thereby realizing detection with higher accuracy and higher reliability with a simple structure.
In other embodiments, the movable part 110 may also be arranged not to rotate, but to move relative to the cooking appliance body, for example, in a horizontal plane, or in a height direction of the cooking appliance. At this time, the first capacitive plate 130 and the second capacitive plate 140 may also form a parallel plate capacitor, so as to determine whether the movable member 110 moves to a predetermined position.
In another embodiment, the controller may calculate a rate of change of the capacitance value according to the detected capacitance value, and further determine the position of the first capacitive plate 130 according to the rate of change of the capacitance value, and further determine whether the movable member 110 rotates to a predetermined position. If the rate of change of the capacitance value reaches the preset rate of change value, it is determined that the movable member 110 is rotated to a predetermined position. It should be noted that the preset capacitance value and the preset change rate value may be predetermined according to experiments.
Preferably, the capacitive assembly includes a plurality of first capacitive plates 130. The plurality of first capacitive plates 130 are circumferentially disposed on the movable member 110. The positions of the plurality of first capacitor plates 130 may correspond to the positions of the plurality of food material receiving portions one by one. Thus, the second capacitive plate 140 detects the positions of the plurality of first capacitive plates 130, and further determines whether the movable member 110 is rotated to a plurality of predetermined positions (the plurality of predetermined positions and the positions of the plurality of first capacitive plates 130 correspond one to one), whereby the movable member can be rotated to a plurality of predetermined positions, and it is possible to rotate the movable member 110 to a desired predetermined position as needed.
Preferably, the second capacitive plate 140 is a probe of a capacitive sensor. The first capacitor plate 130 is a metal piece. Thereby facilitating the selection of the second capacitive plate 140. The probe of the capacitive sensor and the first capacitive plate 130 are simple in structure and low in cost.
As shown in fig. 2, the cooking appliance includes a positioning detection module, an interaction module, a heating module, a rice information acquisition module, a control module, and an electric module. The control module is electrically connected with the positioning detection module, the interaction module, the heating module, the rice seed information acquisition module and the electric module.
The interaction module can comprise an input device, an LED lamp, a four-bit eight-section nixie tube and a prompting device. The prompting device may be a buzzer/horn. The input device may be a display screen. The user can set rice types, taste, timing time, reservation time, cooking mode, etc. through the input device. The input device may be used to display user set parameters, or to display cooking time and status during cooking, etc. The cooking appliance can sound or voice prompt the user of the cooking state through the buzzer.
The heating module is used for heating food materials in a cooking cavity of the cooking utensil.
The positioning detection module includes the aforementioned capacitive assembly to detect in real time whether the movable member 110 is rotated to a predetermined position.
The rice information acquisition module is fixedly arranged at a preset position of the cooking utensil. When the movable part 110 rotates to a predetermined position (the predetermined position and the position of the rice seed information acquiring module are correspondingly set), the rice seed information acquiring module can read the information of the bar code on the prepackaged food material corresponding to the predetermined position to acquire the rice seed related information.
The electromotive module includes the above-described driving motor to drive the movable member 110 to rotate.
The control module comprises the controller. The control module is used for coordinating and controlling the work of each module. The control module can complete the positioning function, recognize the reference zero point position in the moving process of the movable part 110, start the rice seed information acquisition module from the reference zero point position to acquire the rice seed information, and control the heating module to realize cooking.
The invention also provides a control method of the cooking utensil. The cooking appliance is the cooking appliance.
The control method comprises the following steps:
controlling the driving part to start moving the movable part 110;
the driving part is controlled to stop the movable part 110 at a predetermined position according to the capacitance value of the parallel plate capacitor.
As described above, the movable member 110 is rotated to different positions, and the capacitance values of the parallel plate capacitors are different. In this way, it is possible to determine whether the movable member 110 rotates to a predetermined position according to a change in the capacitance value of the parallel capacitor, thereby controlling the movable member 110 to stop at the predetermined position.
In the present embodiment, the step of controlling the driving part to stop the movable part 110 at a predetermined position according to the capacitance value of the parallel plate capacitor includes:
detecting the capacitance value in real time and converting the capacitance value into a corresponding AD value, recording the corresponding AD value a0 in the moving process of the movable part 110, judging that the movable part 110 moves to reach a preset position when the detected a0 reaches a preset capacitance value, and controlling the movable part 110 to stop moving. Thereby, the movable member 110 can be accurately controlled to stop at the predetermined position.
In other embodiments, the step of controlling the driving part to stop the movable part 110 at the predetermined position according to the capacitance value of the parallel plate capacitor includes:
detecting the capacitance value in real time and converting the capacitance value into a corresponding AD value, calculating and recording a corresponding AD value change rate Deltab in the moving process of the movable part 110, and judging that the movable part 110 moves to a preset position when the detected Deltab reaches a change rate preset value, and controlling the movable part 110 to stop moving. Thereby, the movable member 110 can be accurately controlled to stop at the predetermined position.
As shown in fig. 3, the control method of the cooking appliance of the present embodiment includes:
and 1, electrifying the cooking utensil.
And 2, controlling the driving motor to rotate.
And 3, acquiring a capacitance value in real time through a probe of the capacitance sensor, converting the capacitance value into an AD value a0, and recording a0 or the change rate delta b of the AD value.
As the movable member 110 rotates, the capacitance value between the probe of the capacitive sensor and the first capacitive plate 130 changes as the movable member 110 rotates. In the step, the capacitance value is acquired in real time through the probe of the capacitance sensor, so that a basis can be provided for judging whether the movable part rotates to a preset position in the subsequent step.
And 4, judging whether a0 reaches a preset capacitance value or judging whether Deltab reaches a preset change rate value, if so, executing the step 5, otherwise, returning to the step 2.
And 5, judging that the movable part 110 rotates to a preset position, and controlling the driving motor to stop rotating by the controller.
And 6, the controller controls the rice seed information acquisition module to read the bar code information.
Step 7, judging whether the movable component 110 rotates for one circle to return to the initial position, if yes, executing step 8, otherwise, returning to execute step 2 to continue the current cycle.
And 8, after the rice information is acquired, the cooking appliance enters a cooking program.
And 9, cooking is completed.
The present invention has been illustrated by the above-described embodiments, but it should be understood that the above-described embodiments are for purposes of illustration and description only and are not intended to limit the invention to the embodiments described. In addition, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications are possible in light of the teachings of the invention, which variations and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
The flow described in all the preferred embodiments described above is only an example. Unless adverse effects occur, various processing operations may be performed in an order different from that of the above-described flow. The step sequence of the above-mentioned flow can also be added, combined or deleted according to the actual requirement.
Further, the commands, command numbers and data items described in all the above preferred embodiments are examples only, and thus these commands, command numbers and data items may be set in any manner as long as the same functions are achieved. The elements of the terminals of the preferred embodiments may also be integrated, further divided or pruned as desired.
Claims (7)
1. A cooking appliance, comprising:
a cooking appliance body (120), wherein a cooking cavity is arranged in the cooking appliance body (120);
-a movable part (110), the movable part (110) being configured to be movable relative to the cooking appliance body (120) and having a plurality of predetermined positions, the movable part (110) being arranged to rotate in a circumferential direction about a pivot axis, the plurality of predetermined positions being evenly distributed along the circumference;
a driving part configured to drive the movable part (110) to move;
a first capacitor plate (130), a plurality of the first capacitor plates (130) being circumferentially disposed on the movable member (110), the first capacitor plates (130) being moved in a circumferential direction with rotation of the movable member (110);
a second capacitive plate (140), the second capacitive plate (140) being disposed on the cooking appliance body (120), the first capacitive plate (130) being disposed to move with the movable member (110) to a position corresponding to the second capacitive plate (140) to form a parallel plate capacitor; and
a controller configured to control the driving part to stop the movable part (110) at the predetermined position according to a capacitance value of the parallel plate capacitor;
wherein the controller is configured to: acquiring a capacitance value of the parallel plate capacitor in real time during the movement of the movable member (110), converting the capacitance value into a corresponding AD value a0, determining that the movable member (110) moves to the predetermined position when the detected a0 reaches a capacitance preset value, and controlling the movable member (110) to stop moving, or
The controller is configured to: and acquiring the capacitance value of the parallel plate capacitor in real time, converting the capacitance value into a corresponding AD value, calculating and recording a corresponding AD value change rate delta b in the moving process of the movable part (110), and judging that the movable part (110) moves to reach the preset position when the detected delta b reaches a change rate preset value, and controlling the movable part (110) to stop moving.
2. The cooking appliance of claim 1, wherein the second capacitive plate (140) is electrically connected to the controller.
3. The cooking appliance according to claim 1, wherein the second capacitive plate (140) is a probe of a capacitive sensor.
4. A cooking appliance according to any one of claims 1-3, characterized in that the cooking appliance comprises a plurality of food material receptacles arranged to move with rotation of the movable part (110), the number of the first capacitive plates (130) being the same as the number of the food material receptacles.
5. A control method of a cooking appliance, characterized in that the cooking appliance is the cooking appliance according to any one of claims 1 to 4, the control method comprising:
-controlling the driving member to start moving the movable member (110);
the driving part is controlled to stop the movable part (110) at the predetermined position according to the capacitance value of the parallel plate capacitor.
6. The method for controlling a cooking appliance according to claim 5, wherein,
the step of controlling the driving part to stop the movable part (110) at the predetermined position according to the capacitance value of the parallel plate capacitor includes:
detecting the capacitance value in real time and converting the capacitance value into a corresponding AD value, recording the corresponding AD value a0 in the moving process of the movable component (110), judging that the movable component (110) moves to reach the preset position when the detected a0 reaches the preset capacitance value, and controlling the movable component (110) to stop moving.
7. The method for controlling a cooking appliance according to claim 5, wherein,
the step of controlling the driving part to stop the movable part (110) at the predetermined position according to the capacitance value of the parallel plate capacitor includes:
and detecting the capacitance value in real time and converting the capacitance value into a corresponding AD value, calculating and recording a corresponding AD value change rate delta b in the moving process of the movable component (110), and judging that the movable component (110) moves to reach the preset position when the detected delta b reaches a change rate preset value, and controlling the movable component (110) to stop moving.
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| CN201911417420.9A CN113116162B (en) | 2019-12-31 | 2019-12-31 | Cooking appliance and control method of cooking appliance |
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| CN201911417420.9A CN113116162B (en) | 2019-12-31 | 2019-12-31 | Cooking appliance and control method of cooking appliance |
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| CN113116162B true CN113116162B (en) | 2023-10-03 |
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| CN109916284A (en) * | 2019-03-01 | 2019-06-21 | 维沃移动通信有限公司 | A kind of method for detecting position and terminal device |
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