CN111061178A - Method and circuit system for controlling cooking appliance based on voltage and cooking appliance - Google Patents
Method and circuit system for controlling cooking appliance based on voltage and cooking appliance Download PDFInfo
- Publication number
- CN111061178A CN111061178A CN201910936165.2A CN201910936165A CN111061178A CN 111061178 A CN111061178 A CN 111061178A CN 201910936165 A CN201910936165 A CN 201910936165A CN 111061178 A CN111061178 A CN 111061178A
- Authority
- CN
- China
- Prior art keywords
- circuit
- resonant
- resonant heating
- voltage
- cooking appliance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010411 cooking Methods 0.000 title claims abstract description 101
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000010438 heat treatment Methods 0.000 claims abstract description 120
- 239000003990 capacitor Substances 0.000 claims description 40
- 238000001514 detection method Methods 0.000 claims description 36
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 6
- 241000209094 Oryza Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- 244000068988 Glycine max Species 0.000 description 2
- 235000010469 Glycine max Nutrition 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 210000004080 milk Anatomy 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 235000014347 soups Nutrition 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
Abstract
The invention discloses a method for controlling a cooking appliance based on voltage, a circuit system and the cooking appliance, wherein the method comprises the following steps: s1: detecting a voltage value; s2: judging the detected mains supply voltage range to which the voltage value belongs, controlling the conduction of a driving circuit in the corresponding mains supply voltage range to switch to the corresponding resonant heating circuit, controlling the corresponding resonant heating circuit to start working after receiving an electric signal for starting cooking of the cooking appliance, or judging the detected mains supply voltage range to which the voltage value belongs after receiving an electric signal for starting cooking of the cooking appliance, and controlling the conduction of the driving circuit in the corresponding mains supply voltage range to switch to the corresponding resonant heating circuit to work. The method, the circuit system and the cooking utensil are suitable for different mains voltage ranges, so that the method, the circuit system and the cooking utensil are suitable for different countries and regions.
Description
Technical Field
The invention relates to the field of cooking appliances, in particular to a method for controlling a cooking appliance based on voltage, a circuit system and the cooking appliance.
Background
The commercial power voltage of China is 220V +/-10%, so that most factory working voltages of the cooking appliances are set within +/-20% of the commercial power voltage in order to guarantee normal cooking effect. For example, an IH electric cooking device with a rated voltage of 220V and a rated power of 600W can be normally used in china and achieve good cooking effect, but if the IH electric cooking device is used in the united states (the mains voltage is 110V), the actual operating voltage of the IH electric cooking device is too low, which results in insufficient power (only 150W, which is one fourth of the rated power of 600W) during cooking, rice cannot be cooked, and undercooking occurs. On the contrary, when the actual working voltage is too high, the cooked rice is too soft and rotten. The existing cooking utensil can not adapt to the voltage change of a plurality of areas, has poor applicability and is a technical problem to be solved urgently.
Therefore, the present application proposes a method, a circuit system and a cooking appliance for controlling a cooking appliance based on voltage to at least partially solve the above 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 problems, an aspect of the present invention provides a method for controlling a cooking appliance based on voltage, the cooking appliance comprising a detection circuit, a micro-control module, and N resonant heating circuits, each resonant heating circuit comprising a coil, a resonant capacitor, and a driving circuit, each resonant capacitor being adapted to a different mains voltage range, wherein N is a positive integer greater than or equal to 2; the method comprises the following steps:
s1: detecting a voltage value;
s2: judging the mains supply voltage range to which the detected voltage value belongs, controlling the conduction of a driving circuit in the corresponding mains supply voltage range to switch to a corresponding resonance heating circuit, and controlling the corresponding resonance heating circuit to start working after receiving an electric signal for starting cooking of the cooking appliance, or
And after receiving an electric signal for starting cooking of the cooking appliance, judging the mains supply voltage range to which the detected voltage value belongs, and controlling the conduction of a driving circuit in the corresponding mains supply voltage range so as to switch to the corresponding resonant heating loop to work.
According to the method, the detection circuit starts to detect the voltage value after being electrified, the micro-control module judges the mains supply voltage range to which the detected voltage value belongs, controls the conduction of the driving circuit in the corresponding mains supply voltage range to switch to the corresponding resonant heating loop, and controls the corresponding resonant heating loop to start to work after receiving an electric signal for starting cooking of the cooking appliance; or after receiving an electric signal for starting cooking of the cooking appliance, judging the mains supply voltage range to which the detected voltage value belongs, and controlling the conduction of the driving circuit in the corresponding mains supply voltage range so as to switch to the corresponding resonant heating loop to work. Therefore, the cooking appliance can cook normally in different mains voltage ranges, good cooking effect is guaranteed, and the electric cooker is suitable for different countries and regions.
Exemplarily, N is 2, the 2 resonant heating circuits include a first resonant heating circuit and a second resonant heating circuit, and the 2 driving circuits include a first driving circuit and a second driving circuit; the method comprises the following steps:
if the detected voltage value falls into a first preset voltage range, controlling the first driving circuit to be conducted so as to switch to the first resonant heating loop;
and if the detected voltage value falls into a second preset voltage range, controlling the second driving circuit to be conducted so as to switch to the second resonant heating loop.
Therefore, the first resonant heating circuit and the second resonant heating circuit can work independently, and the device is suitable for different mains voltage ranges.
Illustratively, if the detected voltage value does not fall into the first preset voltage range or the second preset voltage range, a prompting module of the cooking appliance is controlled to give an alarm.
Therefore, the prompting module gives an alarm to prompt a user, and improper operation is avoided.
In another aspect of the present invention, there is provided a voltage-based control circuit system for heating a cooking appliance, including:
a detection circuit for detecting a voltage value;
n resonant heating circuits, each resonant heating circuit comprising a coil, a resonant capacitor and a drive circuit; the resonant capacitor in each resonant heating loop is suitable for different mains voltage ranges; wherein N is a positive integer greater than or equal to 2;
and the micro control module is used for switching to the corresponding resonant heating loop by controlling the conduction of the corresponding driving circuit according to the voltage value detected by the detection circuit, and controlling the corresponding resonant heating loop to work.
According to the circuit system for voltage-based control, the detection circuit starts to detect the voltage value after being electrified, and the micro-control module switches to the corresponding resonant heating loop by controlling the conduction of the corresponding driving circuit according to the voltage value detected by the detection circuit so as to control the corresponding resonant heating loop to work. Therefore, the circuit system can be applied to different mains voltage ranges, the cooking appliance with the circuit system can cook normally, good cooking effect is guaranteed, and the circuit system is suitable for different countries and regions.
Illustratively, the micro control module comprises an analog-to-digital conversion (AD) detection port, and the detection circuit is specifically used for detecting the voltage value of the AD detection port.
Therefore, the mains supply voltage is converted into a voltage value suitable for being input into the micro control module through the analog-to-digital conversion AD detection port of the micro control module, and the control process is convenient to realize.
Illustratively, the detection circuit comprises a rectification circuit, a voltage division circuit and a filter circuit; and the mains supply voltage is input to the analog-to-digital conversion AD detection port after rectification, voltage division and filtering.
Therefore, a stable and accurate voltage value can be obtained by arranging the rectifying circuit, the voltage dividing circuit and the filter circuit, and the control process is facilitated.
Exemplarily, N-2, the 2 resonant heating circuits comprise a first resonant heating circuit and a second resonant heating circuit, the first resonant capacitor C1 in the first resonant heating circuit is adapted for a first mains voltage range of 100V to 120V, and the second resonant capacitor C2 in the second resonant heating circuit is adapted for a second mains voltage range of 200V to 240V.
Therefore, the circuit system can be suitable for the two mains voltage ranges and has wide applicability.
Illustratively, the capacitance capacity of the first resonance capacitor C1 satisfies: c1 is more than or equal to 0.24 mu F and less than or equal to 0.33 mu F; the capacitance capacity of the second resonance capacitor C2 satisfies: c2 is more than or equal to 0.24 mu F and less than or equal to 0.6 mu F.
Exemplarily, N is 2, the 2 resonant heating circuits include a first resonant heating circuit and a second resonant heating circuit, and a first driving circuit in the first resonant heating circuit includes a first relay RY101, a freewheeling diode D114, a transistor Q113, a first resistor R187, and a second resistor R186; the output of an I/O port of the micro-control module is connected with a first resistor R187, the other end of the first resistor R187 is connected with a second resistor R186 and the base electrode of a triode Q113, the other end of the second resistor R186 is grounded, the emitter electrode of the triode Q113 is grounded, and the collector electrode of the triode Q113 is connected with the anode of a freewheeling diode D114; the negative electrode of the freewheeling diode D114 is connected with the power supply of the first drive circuit; the positive and negative electrodes of the freewheeling diode D114 are connected to the two ends of the first relay RY101, respectively; the configuration of the second drive circuit in the second resonant heating circuit is the same as the configuration of the first drive circuit.
Therefore, the circuit system has simple manufacturing process and simple and safe control process.
Exemplarily, N is 2, the 2 resonant heating circuits include a first resonant heating circuit and a second resonant heating circuit, and a first coil in the first resonant heating circuit is a side coil of the coil disk; the second coil in the second resonant heating circuit is the bottom coil of the coil disk.
Therefore, the coil panel and the capacitor generate resonance to heat the cooking utensil, and the effect is good.
In another aspect, the present invention provides a cooking appliance including the circuit system according to any one of the above embodiments.
The cooking utensil can cook normally under different mains voltage, ensures good cooking effect, and is suitable for different countries and regions.
Drawings
The following drawings of embodiments of the invention are included as part of the present invention for an understanding of the invention. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. In the drawings, there is shown in the drawings,
FIG. 1 is a partial schematic diagram of the voltage-based control circuitry of a preferred embodiment of the present invention, showing the detection circuit and the micro-control module;
FIG. 2 is a partial schematic diagram of the voltage-based control circuitry of a preferred embodiment of the present invention, showing a resonant heating loop;
fig. 3 is a schematic flowchart of a method of controlling a cooking appliance based on voltage according to a preferred embodiment of the present invention.
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 the preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.
For example, the embodiment of the invention can be applied to cooking appliances, such as electric cookers, electric pressure cookers, cooking machines, soybean milk makers, electric stewpots or other electric heating appliances.
The cooking appliance may include a pot body and a lid. The cooker body can be provided with an inner pot containing part in a cylindrical shape (or other shapes), and the inner pot can be freely put into or taken out of the inner pot containing part so as to be convenient for cleaning the inner pot. The inner pot is generally made of a metal material and has a circular opening on an upper surface for containing a material to be heated, such as rice, soup, etc.
It can be understood that the inner pot and the inner pot receiving part of the pot body have corresponding shapes. For example, the inner pan comprises a body of revolution formed by a pan wall with an upper opening and an inner cavity, the body of revolution having a shape comprising the pan wall and a pan rim attached to the upper part of the pan body (disposed along the entire circumference of the pan body). The capacity of the inner pot is usually below 6 liters (L), for example, the capacity of the inner pot can be 2L or 4L.
The cover body is 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 space is formed between the cover body and the inner pot. Optionally, the lid body may include an upper cover and a removable cover disposed between the upper cover and the pot body and detachably connected to the upper cover to facilitate cleaning of the removable cover at any time.
The pot body may further include a heating means for heating the inner pot. In addition, the cooking appliance may further include a temperature sensor configured to measure a temperature value in the cooking space. For example, the cooking appliance may comprise a bottom temperature sensor for sensing a bottom temperature of the inner pot and/or a top temperature sensor for sensing a top temperature of the inner pot. Wherein the top temperature sensor may be provided in the cover. The bottom temperature sensor and the top temperature sensor may be thermistors. Bottom temperature sensor and top temperature sensor all are connected to cooking utensil's controlling means to after the temperature of pot in the sensing feeds back the temperature signal that senses to controlling means, thereby controlling means can realize more accurate control to the process of culinary art based on temperature signal. Wherein, when the inner pot is arranged in the inner pot accommodating part of the cooker body, the bottom temperature sensor can sense the temperature of the bottom wall of the inner pot, for example, the bottom temperature sensor can be directly or indirectly contacted with the bottom wall.
The cooking appliance may include a reminder module. The prompting module is used for indicating cooking information or other related information (information such as mains voltage mismatch) to a user. The prompting module can comprise an LED lamp, a four-position eight-section nixie tube, a buzzer/loudspeaker, a display unit or other devices and is used for displaying the cooking function of the cooking appliance, the cooking time and state and the like set by a user or in the cooking process and prompting the cooking state of the user through the buzzer or voice. The prompting module can be arranged on the cover body or the cooker body of the cooking appliance.
In addition, the cooker body can also comprise a power panel. The power panel can be used for supplying power for the prompt module, the control device and the like.
IH is an electromagnetic heating technology, for example, a household cooking appliance may use IH with an electromagnetic heating element at the bottom and around the cooking appliance to uniformly heat the food in the cooking appliance, and therefore, IH may also be called three-dimensional electromagnetic heating. The IH heater of the present embodiment may be a heating device in a cooking appliance.
Fig. 3 is a schematic flowchart of a method of controlling a cooking appliance based on voltage according to a preferred embodiment of the present invention.
The method shown in fig. 3 comprises:
s1: detecting a voltage value;
s2: and judging the mains supply voltage range to which the detected voltage value belongs, controlling the conduction of a driving circuit in the corresponding mains supply voltage range so as to switch to the corresponding resonant heating circuit, and controlling the corresponding resonant heating circuit to start working after receiving an electric signal for starting cooking of the cooking appliance.
Of course, step S2 may also be: after receiving an electric signal for starting cooking of the cooking appliance, judging the mains supply voltage range to which the detected voltage value belongs, and controlling the conduction of the driving circuit in the corresponding mains supply voltage range so as to switch to the corresponding resonant heating loop to work. The present invention does not limit the micro control module to determine whether the process is before or after receiving the electric signal for the cooking appliance to start cooking.
Specifically, in the present embodiment, N is 2, the 2 resonant heating circuits include a first resonant heating circuit and a second resonant heating circuit, and the 2 driving circuits include a first driving circuit and a second driving circuit; the method can comprise the following steps:
if the detected voltage value falls into a first preset voltage range, controlling the first driving circuit to be conducted so as to switch to the first resonant heating loop;
and if the detected voltage value falls into a second preset voltage range, controlling the second driving circuit to be conducted so as to switch to the second resonant heating loop.
Referring to fig. 1 and 3, it can be understood that, since the detection circuit 11 detects the voltage value of the analog-to-digital conversion AD detection port of the micro control module 14, for example, the operating voltage of the micro control module 14 is 5V, the voltage value is a voltage value between 0 and 5V that the mains voltage is rectified, divided, filtered and input to the micro control module 14, and then the first predetermined voltage range has a proportional correspondence with the mains voltage range. The correspondence has already been calculated when designing the circuit system 10.
Then, as shown in fig. 3, after the detection circuit 11 detects the current mains voltage U0 in real time and inputs the converted voltage value to the AD detection port, it is determined whether the current mains voltage meets 07.U1 ≤ U0 ≤ 1.3U1, where U1 is set to 110V, and if yes, the first resonant heating loop is switched to, where the first resonant capacitor C1 meets: c1 is more than or equal to 0.24 mu F and less than or equal to 0.33 mu F; otherwise, whether the current mains voltage meets 07. U2U 0U 2U 2, wherein U2 is set to 220V, if so, the current mains voltage is switched to a second resonant heating loop, wherein a second resonant capacitor C2 meets the following conditions: c1 is more than or equal to 0.24 mu F and less than or equal to 0.6 mu F.
Further, the method may further include:
and if the detected voltage value does not fall into the first preset voltage range or the second preset voltage range, controlling a prompting module of the cooking appliance to give an alarm for prompting.
Bearing the above, it can be understood that when the current mains voltage U0 neither satisfies 07.U1 ≤ U0 ≤ 1.3U1 nor 07.U2 ≤ U0 ≤ 1.3U2, the control prompting module performs alarm prompting: the current voltage is not a specific standard voltage type.
After the cooking appliance selects the corresponding resonant heating loop for heating, a control device (which can be understood as the micro control module 14) of the cooking appliance can adjust cooking parameters in the cooking process in real time according to the bottom temperature sensor and/or the top temperature sensor of the inner pot, so as to ensure the cooking quality.
It should be noted that, in this embodiment, the method of the present invention first determines the mains voltage range to which the detected voltage value belongs, controls the conduction of the driving circuit in the corresponding mains voltage range to switch to the corresponding resonant heating circuit, and controls the corresponding resonant heating circuit to start to operate after receiving the electric signal for starting the cooking of the cooking appliance.
Of course, in another embodiment, the method of the present invention may differ from the method of the above-described embodiment only in that: after receiving an electric signal for starting cooking of the cooking appliance, judging the mains supply voltage range to which the detected voltage value belongs, and controlling the conduction of the driving circuit in the corresponding mains supply voltage range so as to switch to the corresponding resonant heating loop to work. Therefore, for brevity of the text, no further description is given.
Referring to fig. 1 and 2, a circuit system for voltage-based control according to a preferred embodiment of the present invention will be described in detail.
As shown in fig. 1 and 2, the circuit system 10 includes a detection circuit 11; n resonant heating loops; and a micro control module 14.
A detection circuit 11 for detecting a voltage value;
n resonant heating circuits, each resonant heating circuit comprising a coil, a resonant capacitor and a drive circuit; the resonant capacitor in each resonant heating loop is suitable for different mains voltage ranges; wherein N is a positive integer greater than or equal to 2;
and the micro control module 14 is configured to switch to the corresponding resonant heating circuit by controlling conduction of the corresponding driving circuit according to the voltage value detected by the detection circuit 11, and control the corresponding resonant heating circuit to operate to control the corresponding resonant heating circuit to start operating.
Illustratively, referring to fig. 1, the micro control Unit 14 (MCU) may include an Analog-to-Digital (AD) detection port. The detection circuit 11 is specifically configured to detect a voltage value of an analog-to-digital conversion AD detection port of the MCU.
Specifically, the detection circuit 11 may include a rectifier circuit, a voltage divider circuit, and a filter circuit.
As shown in fig. 1, the rectifying circuit may include a diode D1 and a diode D2, one end (positive electrode) of the diode D1 is used for connecting a neutral line access end of a main board of the cooking appliance, and the other end of the diode D1 is connected with a voltage dividing circuit; one end (positive electrode) of the diode D2 is connected to the live wire connection terminal of the main board of the cooking appliance, and the other end of the diode D2 is connected to the voltage divider circuit. Thereby rectifying the mains voltage signal.
The voltage division circuit can comprise M1 resistors connected in series, wherein one end of the M1 resistors connected in series is connected with the output end of the rectifying circuit, and the other end of the M1 resistors connected in series is grounded. Illustratively, M1 is 4, and as shown in fig. 1, the voltage dividing circuit includes a first voltage dividing resistor R1, a second voltage dividing resistor R2, a third voltage dividing resistor R3 and a fourth voltage dividing resistor R4 connected in series in sequence. The first voltage dividing resistor R1 is connected to the cathodes of the diode D1 and the diode D2, and the fourth voltage dividing resistor R4 is grounded. M1 may have other values, that is, the number of resistors included in the voltage dividing circuit is not limited in the present invention, and the value may be set according to the needs of the scene.
With continued reference to fig. 1, the filter circuit may include a first filter capacitor C3, a second filter capacitor C4, and a current limiting resistor R5. The first filter capacitor C3 is connected in parallel with a ground terminal resistor in the voltage division circuit; one end of the current limiting resistor R5 is connected with the other end of the ground terminal resistor, the other end of the current limiting resistor R5 is connected with one end of the second filter capacitor C4 and the analog-to-digital conversion AD detection port, and the other end of the second filter capacitor C4 is grounded. The ground terminal resistor in the voltage divider circuit is understood to be the fourth voltage divider resistor R4 in this embodiment. The current limiting resistor R5 is used to transmit the mains voltage signal to the a/d conversion AD detection port of the micro control module 14, and to protect the a/d conversion AD detection port, so as to obtain a stable voltage value signal.
With continued reference to fig. 2, in the present embodiment, N is 2. The circuit system is provided with 2 resonant heating loops, namely a first resonant heating loop and a second resonant heating loop.
The first resonant heating circuit includes a first drive circuit, a first resonant capacitor C1, and a first coil. Specifically, the first drive circuit may include a first relay RY101, a freewheeling diode D114, a transistor Q113, a first resistor R187, and a second resistor R186; the output of the I/O port of the micro control module 14 is connected to a first resistor R187, the other end of the first resistor R187 is connected to a second resistor R186 and the base of the transistor Q113, the other end of the second resistor R186 is grounded, the emitter of the transistor Q113 is grounded, and the collector of the transistor Q113 is connected to the anode of the freewheeling diode D114; the negative electrode of the freewheeling diode D114 is connected with the power supply of the first drive circuit; the positive and negative electrodes of the freewheel diode D114 are connected to both ends of the first relay RY101, respectively.
The first resonant capacitor C1 may be set to be suitable for the first mains voltage range. Exemplarily, the first resonance capacitor C1 may be set to be suitable for a first mains voltage range of 100V to 120V. Of course, the value of the first mains voltage range and the capacitance value of the corresponding first resonance capacitor C1 may be adjusted according to actual requirements. For example, as will be described later, the first mains voltage range is 07.U1 ≦ U0 ≦ 1.3U1, where U0 represents the current mains voltage and U1 is set to 110V, and this first mains voltage range represents the mains voltage range of 77V to 143V, which is wider than the mains voltage range of 100V to 120V, making the applicability of the first resonant heating loop more extensive. The capacitance capacity of the first resonance capacitor C1 corresponding to the mains voltage range of 77V to 143V described above satisfies: c1 is more than or equal to 0.24 mu F and less than or equal to 0.33 mu F.
It will be appreciated that the first mains voltage range of 100V to 120V is a relatively suitable range set according to practical circumstances. For example, when the circuit system is applied to the united states, japan, etc. where the mains voltage is 110V, it is preferable to perform heating using the first resonant heating circuit. The wide mains voltage range of 77V to 143V is set to allow the cooking appliance to operate normally at as much mains voltage as possible during the control process. In practice, the 110V mains voltage is usually floating within 110V ± 10%, and is not lowered to the lower limit of 77V or raised to the upper limit of 143V.
The first coil may be a side coil of a coil panel of the cooking appliance. As shown in fig. 2, the first coil is connected at OUT1 in series with a first resonant capacitor C1. When the first coil is electrified, the first coil and the first resonance capacitor C1 form series resonance, and the inner pot is heated.
With continued reference to fig. 2, the second resonant heating circuit includes a second drive circuit, a second resonant capacitor C2, and a second coil. The configuration of the second driving circuit may be the same as that of the first driving circuit. For brevity, the detailed description is omitted here, and the specific structure thereof can be seen with reference to fig. 2.
The second resonant capacitor C2 may be set for being suitable for the second mains voltage range. Exemplarily, the second resonance capacitor C2 may be set to be suitable for a second mains voltage range of 200V to 240V. Of course, the value of the second mains voltage range and the capacitance of the corresponding second resonant capacitor C2 may be adjusted according to actual requirements. For example, as will be described later, the second mains voltage range is 07.U2 ≦ U0 ≦ 1.3U2, where U0 represents the current mains voltage and U2 is set to 220V, and this second mains voltage range represents a mains voltage range of 154V to 286V, which is wider than the mains voltage range of 200V to 240V, making the applicability of the second resonant heating loop more extensive. The capacitance capacity of the second resonance capacitor C2 corresponding to the above mains voltage range of 154V to 286V satisfies: c1 is more than or equal to 0.24 mu F and less than or equal to 0.6 mu F.
It will be appreciated that the second mains voltage range of 200V to 240V is a relatively suitable range set according to practical circumstances. For example, when the circuit system is used domestically, it is very suitable to use the second resonant heating circuit for heating. The wide mains voltage range of 154V to 286V is set in order to operate the cooking appliance normally at as much mains voltage as possible during the control. In practice, the 220V mains voltage typically floats within 220V ± 10% and does not go down to the lower limit of 154V or up to the upper limit of 286V.
The second coil may be a bottom coil of a coil panel of the cooking appliance. As shown in fig. 2, the second coil is connected at OUT2 in series with a second resonant capacitor C2. When the second coil is electrified, the second coil and the second resonance capacitor C2 form series resonance, and the inner pot is heated.
For the micro control module 14, P1.0 in fig. 1 is an analog-to-digital conversion AD detection port, and P1.1 and P1.2 are I/O ports of the micro processing module. The port P1.1 and the port P1.2 can output high and low levels to realize the control process. Specifically, when the port P1.1 outputs a high level and the port P1.2 outputs a low level, the transistor Q113 is turned on, the transistor Q114 is turned off, so that the first relay RY101 is attracted, the second relay RY102 is turned off, that is, the first driving circuit is turned on, and the first resonant heating circuit is switched to the first resonant heating circuit. After a signal for starting heating is received, the first coil is electrified, the first resonant heating loop starts to work, and the inner pot is heated.
It can be understood that when the port P1.1 outputs a low level and the port P1.2 outputs a high level, the transistor Q114 is turned on and the transistor Q113 is turned off, so that the second relay RY102 is attracted, the first relay RY101 is turned off, that is, the second driving circuit is turned on, and the second resonant heating circuit is switched to the second resonant heating circuit. After receiving the signal for starting heating, the second coil is electrified, the second resonance heating loop starts to work, and the inner pot is heated.
It can be understood that when both the port P1.1 and the port P1.2 output low level, the prompt module may perform alarm prompt.
The invention also provides a cooking appliance comprising the circuit system of any one of the embodiments. The cooking appliance may be an electric cooker, an electric pressure cooker, a food processor, a soybean milk maker, an electric stewpan, or other electric heating appliances, but the invention is not limited thereto.
It is understood that the circuit system shown in fig. 1 and 2 can also be applied to other household appliances besides cooking appliances, and the invention is not limited thereto.
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 (11)
1. A method for controlling a cooking appliance based on voltage is characterized in that the cooking appliance comprises a detection circuit, a micro-control module and N resonant heating loops, each resonant heating loop comprises a coil, a resonant capacitor and a driving circuit, each resonant capacitor is suitable for different mains voltage ranges, and N is a positive integer greater than or equal to 2; the method comprises the following steps:
s1: detecting a voltage value;
s2: judging the mains supply voltage range to which the detected voltage value belongs, controlling the conduction of a driving circuit in the corresponding mains supply voltage range to switch to a corresponding resonance heating circuit, and controlling the corresponding resonance heating circuit to start working after receiving an electric signal for starting cooking of the cooking appliance, or
And after receiving an electric signal for starting cooking of the cooking appliance, judging the mains supply voltage range to which the detected voltage value belongs, and controlling the conduction of a driving circuit in the corresponding mains supply voltage range so as to switch to the corresponding resonant heating loop to work.
2. The method of claim 1, wherein: n-2, the 2 resonant heating circuits comprise a first resonant heating circuit and a second resonant heating circuit, and the 2 driving circuits comprise a first driving circuit and a second driving circuit; the method comprises the following steps:
if the detected voltage value falls into a first preset voltage range, controlling the first driving circuit to be conducted so as to switch to the first resonant heating loop;
and if the detected voltage value falls into a second preset voltage range, controlling the second driving circuit to be conducted so as to switch to the second resonant heating loop.
3. The method of claim 2, wherein:
and if the detected voltage value does not fall into the first preset voltage range or the second preset voltage range, controlling a prompting module of the cooking appliance to give an alarm.
4. Circuitry for voltage-based control for heating a cooking appliance, comprising:
a detection circuit for detecting a voltage value;
n resonant heating circuits, each resonant heating circuit comprising a coil, a resonant capacitor and a drive circuit; the resonant capacitor in each resonant heating loop is suitable for different mains voltage ranges; wherein N is a positive integer greater than or equal to 2;
and the micro control module is used for switching to the corresponding resonant heating loop by controlling the conduction of the corresponding driving circuit according to the voltage value detected by the detection circuit, and controlling the corresponding resonant heating loop to work.
5. The voltage based control circuitry of claim 4, wherein: the micro-control module comprises an analog-to-digital conversion AD detection port, and the detection circuit is specifically used for detecting the voltage value of the analog-to-digital conversion AD detection port.
6. The voltage based control circuitry of claim 5, wherein: the detection circuit comprises a rectification circuit, a voltage division circuit and a filter circuit; and the mains supply voltage is input to the analog-to-digital conversion AD detection port after rectification, voltage division and filtering.
7. The voltage based control circuitry of claim 4, wherein: n2, the 2 resonant heating circuits comprise a first resonant heating circuit and a second resonant heating circuit, the first resonant capacitor C1 in the first resonant heating circuit being adapted for a first mains voltage range of 100V to 120V, and the second resonant capacitor C2 in the second resonant heating circuit being adapted for a second mains voltage range of 200V to 240V.
8. The voltage based control circuitry of claim 1, wherein: the capacitance capacity of the first resonance capacitor C1 satisfies: c1 is more than or equal to 0.24 mu F and less than or equal to 0.33 mu F; the capacitance capacity of the second resonance capacitor C2 satisfies: c2 is more than or equal to 0.24 mu F and less than or equal to 0.6 mu F.
9. The voltage based control circuitry of claim 4, wherein: n is 2, the 2 resonant heating circuits include a first resonant heating circuit and a second resonant heating circuit, and a first driving circuit in the first resonant heating circuit includes a first relay RY101, a freewheeling diode D114, a transistor Q113, a first resistor R187 and a second resistor R186; the output of an I/O port of the micro-control module is connected with a first resistor R187, the other end of the first resistor R187 is connected with a second resistor R186 and the base electrode of a triode Q113, the other end of the second resistor R186 is grounded, the emitter electrode of the triode Q113 is grounded, and the collector electrode of the triode Q113 is connected with the anode of a freewheeling diode D114; the negative electrode of the freewheeling diode D114 is connected with the power supply of the first drive circuit; the positive and negative electrodes of the freewheeling diode D114 are connected to the two ends of the first relay RY101, respectively; the configuration of the second drive circuit in the second resonant heating circuit is the same as the configuration of the first drive circuit.
10. The voltage based control circuitry of claim 4, wherein: n-2, the 2 resonant heating circuits comprise a first resonant heating circuit and a second resonant heating circuit, and a first coil in the first resonant heating circuit is a side coil of the coil panel; the second coil in the second resonant heating circuit is the bottom coil of the coil disk.
11. A cooking appliance comprising the circuitry of any one of claims 4-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910936165.2A CN111061178A (en) | 2019-09-29 | 2019-09-29 | Method and circuit system for controlling cooking appliance based on voltage and cooking appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910936165.2A CN111061178A (en) | 2019-09-29 | 2019-09-29 | Method and circuit system for controlling cooking appliance based on voltage and cooking appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111061178A true CN111061178A (en) | 2020-04-24 |
Family
ID=70297493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910936165.2A Pending CN111061178A (en) | 2019-09-29 | 2019-09-29 | Method and circuit system for controlling cooking appliance based on voltage and cooking appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111061178A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112362950A (en) * | 2020-10-19 | 2021-02-12 | 杭州九阳小家电有限公司 | Voltage detection method of cooking equipment and cooking equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4992677A (en) * | 1988-03-23 | 1991-02-12 | Hitachi, Ltd. | High speed MOSFET output buffer with low noise |
| CN204539526U (en) * | 2015-05-07 | 2015-08-05 | 广东美的厨房电器制造有限公司 | The microwave oven circuit of adaptive input voltage and microwave oven |
| CN106264090A (en) * | 2015-06-08 | 2017-01-04 | 佛山市顺德区美的电热电器制造有限公司 | Method and device based on Control of Voltage cooking apparatus and cooking apparatus |
| CN207410547U (en) * | 2017-10-30 | 2018-05-25 | 浙江苏泊尔家电制造有限公司 | For the control circuit and cooking apparatus of cooking apparatus |
| CN109298732A (en) * | 2017-07-25 | 2019-02-01 | 佛山市顺德区美的电热电器制造有限公司 | Cooking apparatus and its thermal-insulation control method |
-
2019
- 2019-09-29 CN CN201910936165.2A patent/CN111061178A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4992677A (en) * | 1988-03-23 | 1991-02-12 | Hitachi, Ltd. | High speed MOSFET output buffer with low noise |
| CN204539526U (en) * | 2015-05-07 | 2015-08-05 | 广东美的厨房电器制造有限公司 | The microwave oven circuit of adaptive input voltage and microwave oven |
| CN106264090A (en) * | 2015-06-08 | 2017-01-04 | 佛山市顺德区美的电热电器制造有限公司 | Method and device based on Control of Voltage cooking apparatus and cooking apparatus |
| CN109298732A (en) * | 2017-07-25 | 2019-02-01 | 佛山市顺德区美的电热电器制造有限公司 | Cooking apparatus and its thermal-insulation control method |
| CN207410547U (en) * | 2017-10-30 | 2018-05-25 | 浙江苏泊尔家电制造有限公司 | For the control circuit and cooking apparatus of cooking apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112362950A (en) * | 2020-10-19 | 2021-02-12 | 杭州九阳小家电有限公司 | Voltage detection method of cooking equipment and cooking equipment |
| CN112362950B (en) * | 2020-10-19 | 2023-03-31 | 杭州九阳小家电有限公司 | Voltage detection method of cooking equipment and cooking equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7256288B2 (en) | kitchenware | |
| JP5830690B2 (en) | Induction heating cooker | |
| EP2592974A1 (en) | Multi cooker | |
| CN108552989A (en) | A kind of intelligence cookware and intelligent stove | |
| JP6328572B2 (en) | Induction heating cooker with non-contact power feeding function and control method thereof | |
| US20200163171A1 (en) | Induction cooktop | |
| EP2681491A2 (en) | Universal device for energy control in the form of a button | |
| CN109691856A (en) | Cooking apparatus and its leftovers detection method, device | |
| CN107763694B (en) | Cooking linkage system, method and smoke machine | |
| CN109691866A (en) | Cooking apparatus and its cookware recognition methods, device | |
| CN110037534B (en) | Pot body heating method and pot | |
| CN111061178A (en) | Method and circuit system for controlling cooking appliance based on voltage and cooking appliance | |
| CN106308465B (en) | The recognition methods of the culinary art type of electric cooking pot and electric cooking pot | |
| CN211534058U (en) | Heating plate and cooking utensil with same | |
| CN112578697A (en) | Method and circuit system for controlling cooking appliance based on voltage and cooking appliance | |
| CN213371445U (en) | A surge detection and voltage detection multiplex circuit and cooking utensil for cooking utensil | |
| CN106264160B (en) | The recognition methods of the culinary art type of electric cooking pot and electric cooking pot | |
| CN209789528U (en) | Cooking utensil | |
| CN108209527A (en) | Heating vessel | |
| CN112568725A (en) | Method for controlling cooking appliance based on voltage and cooking appliance | |
| CN215866872U (en) | Power consumption detection circuit and have its cooking utensil | |
| JP2013039313A (en) | Cooking device | |
| JP2673747B2 (en) | rice cooker | |
| CN112021913B (en) | Control method of cooking appliance and cooking appliance | |
| CN111789479B (en) | Cooking appliance and control method for cooking appliance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200424 |
|
| RJ01 | Rejection of invention patent application after publication |