CN217659335U - Pot detection circuit, cooking device - Google Patents

Abstract

The application discloses pan detection circuitry, cooking device. This pan detection circuitry includes: the cookware recognition circuit comprises a power supply port, a cookware recognition circuit and a control circuit, wherein the power supply port comprises a first pin and a second pin, the first pin is connected with one electrode of a power supply, and the second pin is connected with the other electrode of the power supply through a switch component; the cooker identification circuit is connected with the second pin and used for outputting a corresponding identification signal according to a cooker connected with the power supply port; the control circuit is connected with the cooker identification circuit and used for determining the type of the cooker according to the identification signal. By the mode, the type of the cookware can be detected and identified, the circuit is simple, and the cookware is easy to realize.

Description

Pot detection circuit, cooking device

Technical Field

The application relates to the field of household appliances, in particular to a pot detection circuit and a cooking device.

Background

At present, various cooking devices generally have fixed cooking modes, and a user can only select a cooking pot according to the type of the pot which can be matched with the cooking device and manually adjust the cooking modes according to cooking requirements.

SUMMERY OF THE UTILITY MODEL

The application mainly provides a pan detection circuitry, cooking device, can solve the problem of unable discernment pan type among the prior art.

In order to solve the above technical problem, the first aspect of the present application provides a pot detection circuit, the pot detection circuit includes: the power supply port comprises a first pin and a second pin, the first pin is connected with one electrode of a power supply, and the second pin is connected with the other electrode of the power supply through a switch assembly; the cooker identification circuit is connected with the second pin and used for outputting a corresponding identification signal according to a cooker connected with the power supply port; and the control circuit is connected with the cookware identification circuit and used for determining the cookware type of the cookware according to the identification signal.

Optionally, the pot recognition circuit includes: a voltage divider circuit having a voltage divider node; and the voltage output circuit is connected with the voltage division node and the control circuit and is used for outputting the voltage signal of the voltage division node to the control circuit as the identification signal.

Optionally, the voltage divider circuit includes: the resistor string comprises a plurality of resistors connected in series, a first end of the resistor string is connected with the second pin, and a second end of the resistor string is connected with the voltage division node; and the first end of the first resistor is connected with the voltage division node, and the second end of the first resistor is grounded.

Optionally, the voltage divider circuit further includes: and the anode of the first diode is connected with the second end of the resistor string, and the cathode of the first diode is connected with the voltage division node.

Optionally, the voltage output circuit includes: and a first end of the second resistor is connected with the voltage division node, and a second end of the second resistor is connected with the control circuit.

Optionally, the voltage output circuit further includes: and the anode of the second diode is connected with the voltage division node, and the cathode of the second diode is connected with the reference voltage input end.

Optionally, the voltage output circuit further includes: the capacitor bank comprises a plurality of capacitors connected in parallel, a first end of the capacitor bank is connected with the voltage division node, and a second end of the capacitor bank is grounded.

Optionally, the switch assembly includes: the first end of the relay is connected with the second pin; the first end of the silicon controlled switch is connected with the second end of the relay, and the second end of the silicon controlled switch is connected with the other electrode of the power supply; wherein, respond to the type of pan is broken wall cup, the relay with silicon controlled switch responds to control command in order to control the work of broken wall cup.

In order to solve the above technical problem, a second aspect of the present application provides a cooking apparatus, including: the cookware detection circuit provided by the first aspect is arranged on the base; when the base is connected with the cookware in a matching way, the power supply port of the cookware detection circuit is electrically connected with the cookware.

Optionally, the control circuit in the pot detection circuit is further configured to switch the cooking device to the corresponding cooking mode according to the type of the pot.

The beneficial effect of this application is: be different from prior art's condition, the pan detection circuitry of this application includes: the cookware recognition circuit comprises a power supply port, a cookware recognition circuit and a control circuit, wherein the power supply port comprises a first pin and a second pin, the first pin is connected with one electrode of a power supply, and the second pin is connected with the other electrode of the power supply through a switch component; the pan identification circuit is connected with the second pin and used for outputting corresponding identification signals according to pans connected with the power supply port, and the control circuit is connected with the pan identification circuit and used for determining the pan types of the pans according to the identification signals. Because different pans can demonstrate different electricity performance parameters after even going into the circuit, consequently, the pan detection circuitry back output's identification signal is even gone into to different pans has the difference to some extent, and then can detect out the type of pan, and circuit structure is simple, convenient operation, easily realizes.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a block diagram schematically illustrating the structure of an embodiment of a cooking apparatus according to the present application;

FIG. 2 is a schematic diagram of a circuit structure of an embodiment of a pot detection circuit according to the present application;

FIG. 3 is a schematic circuit diagram of another embodiment of the pot detection circuit of the present application;

FIG. 4 is a schematic circuit diagram of an embodiment of a voltage divider circuit of the present application;

fig. 5 is a schematic circuit diagram of an embodiment of a voltage output circuit according to the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first" and "second" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features shown. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the present application, it is to be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.

Referring to fig. 1, fig. 1 is a schematic block diagram of a cooking device according to an embodiment of the present disclosure. Cooking device 200 includes base 201, is equipped with pan detection circuitry 100 on base 201, and when base 201 and pan cooperation were connected, pan detection circuitry 100's power supply port and pan electricity were connected.

Wherein, base 201 can be used to bear the weight of the pan and be equipped with heating system, can heat the pan of connecting on base 201 to the food in the pan cooks the operation.

When the cookware is placed on the base 201, the cookware can be electrically connected with the cookware detection circuit 100 through the power supply port, so that the cookware detection circuit 100 is used for detecting the type of the cookware, and the corresponding cooking mode can be started conveniently according to the detected type of the cookware.

Specifically, the base 201 may include a plurality of cooking modes, including, for example, frying, cooking, boiling, etc., and the types of cookware to which the base 201 may be coupled include, for example: after a user connects a pot to the base in a matching manner and is electrically connected with a power supply port of the pot detection circuit 100, the pot detection circuit 100 can identify the type of the pot, and after identifying the type of the current pot, start a corresponding cooking mode to perform corresponding cooking operation, for example, when the currently placed pot is identified as a frying pot, start a frying cooking mode; or, the base 201 may be provided with a display screen, and after detecting the type of the pan, the display screen may display cooking options of the corresponding type of the pan for a user to select, for example, when the pan detection circuit identifies that the currently placed pan is a frying pan, the display screen displays options of "steak pan", "pancake", and the like, and the user may select one of functions of starting "steak pan" or pancake "and the like as required according to a prompt of the display screen to fry food.

The cooking device 200 of the embodiment can detect a pot, open a corresponding cooking mode according to the type of the detected pot, automatically select the corresponding cooking mode according to the pot, and simplify the operation of a user.

Referring to fig. 2, fig. 2 is a schematic circuit structure diagram of a pot detection circuit according to an embodiment of the present application. The pot detection circuit 100 includes: the cooker identification circuit comprises a power supply port 10, a cooker identification circuit 20 and a control circuit 30, wherein the power supply port 10 comprises a first pin 11 and a second pin 12, the first pin 11 is connected with one electrode of a power supply, and the second pin 12 is connected with the other electrode of the power supply through a switch component 40; the cooker identification circuit 20 is connected with the second pin 12 and used for outputting a corresponding identification signal according to a cooker connected with the power supply port 10; the control circuit 30 is connected with the pot identifying circuit 20 and used for determining the type of the pot according to the identifying signal.

The first pin 11 and the second pin 12 are respectively used for connecting a detected cookware to connect the detected cookware into a circuit, and the type of the detected cookware can be determined by using the resistance difference of the detected cookware. Specifically, different detected cookers have different resistances, and after the detected cookers are connected to the circuit, the cooker identification circuit can output corresponding identification signals, the identification signals can be current signals, resistance signals, voltage signals or analog signals, and the control circuit 30 can determine the types of the detected cookers according to the output identification signals.

It can be understood that the resistance of the cookware in the embodiments refers to the identification resistance, that is, the resistance can act on the resistance of the cookware detection circuit 100 after the cookware is connected into the cookware detection circuit 100, and the identification resistances of different types of cookware are different from each other.

The control circuit 30 may include a control chip MCU. After determining the type of the detected pot, the control circuit 30 can switch the cooking apparatus 200 to a corresponding cooking mode according to the type of the detected pot, for example, if the pot is identified as a frying pan, the frying mode is turned on, and if the pot is identified as a health preserving pot, the tea water boiling mode is turned on; or, the control circuit 30 switches the operation interface to a corresponding cooking mode selection interface according to the type of the detected pan, the cooking mode selection interface provides multiple cooking modes, each cooking mode is suitable for the identified pan type, for example, if the pan is identified as a frying pan, the operation interface is switched to a frying pan cooking operation interface, the operation interface includes multiple frying cooking modes such as "steak", "pork chop" and "pancake", a user can select one of the cooking modes on the interface to make food, if the pan is identified as a cooking pan, the operation interface is switched to a cooking operation interface of a cooking pan, the operation interface includes multiple cooking modes such as "congee cooking", "cooked wheaten food", "boiled water", and the user can select one of the cooking modes on the interface.

The cooking device 200 of this embodiment may further include a wall breaking cup or a cooking cup, where the wall breaking cup or the cooking cup is provided with a whipping motor and a blade connected to the whipping motor, and the motor drives the blade to rotate when the motor operates, so as to whip and grind the food in the wall breaking cup or the cooking cup. Specifically, first pin 11 and second pin 12 are connected the zero line and the live wire of whipping the motor respectively, and the coil internal resistance of motor then regards as the discernment resistance of broken wall cup, after broken wall cup and first pin 11 and second pin 12 electricity are connected, supplies pan identification circuit 20 to discern the pan type of this broken wall cup.

The switch assembly 40 can be used to control the operation of the whipping motor, and the motor drives the grinding knife in the pot (wall breaking cup, cooking cup) to whip the food, for example, beans or cereals can be whipped and ground into pulp for preparing soybean milk or baby food. For example, the switch assembly 40 can control the on-off of a power supply circuit of the motor, when the switch assembly 40 is switched on, the motor is in a power-on state and can normally work to stir and grind food, and when the switch assembly 40 is switched off, the motor is not powered on and cannot run; alternatively, the switch assembly 40 includes a semiconductor switch for controlling the rotation of the motor according to the control command.

Particularly, when detecting the pan be frying pan, boil the pot, when pure heating cooking utensils such as health preserving kettle, can open corresponding culinary art mode and heat the pan, be broken wall cup when detecting the pan, when cooking the cup, control switch module 40 moves, operate with the whipping motor that control was located on broken wall cup or the cooking cup, the sharpener in drive broken wall cup or the cooking cup is beaten the grinding to food, can directly launch acquiescence culinary art mode after the whipping is accomplished, or, the display screen shows the multiple culinary art mode of broken wall cup, the user selects one of them to cook.

Referring to fig. 3, fig. 3 is a schematic circuit diagram of another embodiment of the pot detection circuit of the present application. The pot detection circuit 100 of the embodiment includes: the cookware identifying circuit comprises a power supply port 10, a cookware identifying circuit 20 and a control circuit 30, wherein the power supply port 10 comprises a first pin 11 and a second pin 12, the first pin 11 is connected with one electrode of a power supply, and the second pin 12 is connected with the other electrode of the power supply through a switch component 40; the cooker identification circuit 20 is connected with the second pin 12 and is used for outputting a corresponding identification signal according to a cooker connected with the power supply port 10; the control circuit 30 is connected to the pot identification circuit 20 for determining the type of the pot according to the identification signal.

The switch assembly 40 may include a relay REL and a silicon controlled switch SCR, wherein a first end of the relay REL is connected to the second pin 12, a first end of the silicon controlled switch SCR is connected to a second end of the relay REL, and a second end of the silicon controlled switch SCR is connected to the other electrode of the power supply. When detecting the pan for broken wall cup, relay REL and silicon controlled switch SCR are broken wall cup for the type of pan responds to, respond to the motor work of control command with control broken wall cup to eat the material to in the broken wall cup and stir and grind.

The first pin 11 is connected with a live wire end of a power supply, the second pin 12 is connected with a zero line end of the power supply, when the wall breaking cup or the cooking cup is connected with the base 201, a live wire of a whipping motor arranged on the wall breaking cup or the cooking cup is connected with the first pin 11, a zero line of the whipping motor is connected with the second pin 12, and the coil internal resistance of the whipping motor is used as a recognition resistor and is connected into the pot detection circuit 100.

Wherein, pan identification circuit 20 can include: a voltage dividing circuit 21 and a voltage output circuit 22, wherein the voltage dividing circuit 21 has a voltage dividing node, and the voltage output circuit 22 is connected to the voltage dividing node and the control circuit 30, and is used for outputting the voltage of the voltage dividing node to the control circuit 30 as an identification signal. Specifically, one end of the voltage output circuit 22 is connected to the voltage dividing node of the voltage dividing circuit 21 to collect a voltage signal at the voltage dividing node, and the other end of the voltage output circuit 22 is connected to the control circuit 30 to send the voltage signal at the voltage dividing node to the control circuit 30, so that the control circuit 30 can determine the type of the pot according to the voltage signal and can determine the cooking mode to be started according to the type of the pot.

Specifically, because different pan types have different identifying resistance, for example, the identifying resistance of several commonly used pans of present adaptation is respectively: the internal resistance of the wall breaking cup coil is hundreds of ohms, the frying pan identification resistance is 360K omega, the cooking pan identification resistance is 1M omega, and the health preserving pot identification resistance is 2.4M omega, so that different partial pressures can be detected at the partial pressure node of the partial pressure circuit 21 after different pots are connected into the pot detection circuit 100 in a matching manner, and therefore the type of the pot to be detected can be determined by the voltage of the partial pressure node.

The pan detection circuitry 100 of this embodiment can detect the type of pan to can open corresponding culinary art mode or open the stirring operation according to the pan type that detects, that is to say, cooking device 200 can support the pan of multiple direct heating for example fry in shallow oil pot, saucepan, support the pan of broken wall cup this kind of stirring earlier grinding back heating even, improve cooking device's suitability and utilization ratio.

Referring to fig. 4, fig. 4 is a circuit structure diagram of a voltage divider circuit according to an embodiment of the present application. The voltage dividing circuit 21 of the present embodiment may include a resistor string 211 and a first resistor R1, wherein the resistor string 211 includes a plurality of resistors connected in series, a first end of the resistor string 211 is connected to the second pin 12, a second end of the resistor string 211 is connected to the voltage dividing node O, a first end of the first resistor R1 is connected to the voltage dividing node O, and a second end of the first resistor R1 is grounded.

Optionally, the voltage dividing circuit 21 may further include a first diode D1, a positive pole of the first diode D1 is connected to the second end of the resistor string 211, and a negative pole of the first diode D1 is connected to the voltage dividing node O. The first diode D1 is a rectifying diode for rectifying the ac power into the dc power.

When the cookware is electrically connected to the cookware detection circuit 100 through the first pin 11 and the second pin 12, the identification resistor of the cookware is connected to the cookware detection circuit 100, the resistance value of the resistor string 211 and the resistance value of the first resistor R1 are fixed, and the voltage at the voltage division node O is different along with the change of the identification resistor connected to the cookware, so that the type of the connected cookware can be judged through the voltage at the voltage division node O.

Referring to fig. 5, the voltage output circuit 22 is connected to the voltage divider circuit 21, the voltage output circuit 22 may include a second resistor R2, a first end of the second resistor R2 is connected to the voltage dividing node O, and a second end of the second resistor R2 is connected to the control circuit 30. The second resistor R2 plays a role of current-limiting protection on the circuit.

The voltage output circuit 22 may further include a second diode D2, an anode of the second diode D2 is connected to the voltage dividing node O, and a cathode of the second diode D2 is connected to the reference voltage input terminal V' to limit the potential at the point to the predetermined potential.

The voltage output circuit 22 may further include a capacitor bank 221, where the capacitor bank 221 includes a plurality of capacitors connected in parallel, a first end of the capacitor bank 221 is connected to the voltage dividing node O, and a second end of the capacitor bank 221 is grounded to play a role of filtering.

In this embodiment, the resistor string 211 includes a third resistor R3, a fourth resistor R4, and a fifth resistor R5 connected in series, and the capacitor bank 221 includes a first capacitor C1 and a second capacitor C2 connected in parallel.

In one embodiment, the first resistor R1 has a resistance of 33K Ω, the second resistor R2 has a resistance of 1K Ω, the third resistor R3, the fourth resistor R4 and the fifth resistor R5 have a resistance of 240K Ω, the first capacitor C1 has a capacitance of 4.7 μ F, and the second capacitor C2 has a capacitance of 1nF.

It can be understood that, in the plurality of resistors connected in series in the resistor string 211, the number of resistors and the resistance parameters of each resistor can be flexibly configured, and the number of capacitor devices connected in parallel in the capacitor bank 221 and the capacitance parameters of each capacitor device can be flexibly configured, and are not limited to the configuration manner of this embodiment.

In this embodiment, the voltage at the voltage dividing node O can be represented as:

wherein V represents the voltage analog value at the voltage dividing node O, R1 is the resistance of the first resistor R1, R is the resistance of the resistor string 211, and rm is the resistance of the detected pot.

Therefore, in the pot detection circuit 100, after the first resistor R1 and the resistor of the resistor string 211 are fixed, the voltage V at the voltage dividing node O is different according to the difference of the resistance rm of the connected pot, and therefore, after the pot is connected, the type of the pot can be determined by detecting the voltage V at the voltage dividing node O.

The control circuit 30 may include an analog-to-digital conversion module, the digital-to-analog conversion module is connected to the voltage output circuit 22, that is, connected to the second end of the second resistor R2, a signal detected by the digital-to-analog conversion module is an analog signal of the voltage dividing node O, the digital-to-analog conversion module performs AD conversion on the analog signal to obtain a voltage value signal of the voltage dividing node O, and the control circuit 30 determines the type of the cookware according to the converted voltage value signal of the voltage dividing node O.

In an embodiment, the calculation method of the digital-to-analog conversion may be:

where AD denotes a voltage value of the voltage dividing node O obtained by digital-to-analog conversion. The digital-to-analog conversion calculation method in this embodiment is only exemplary, and those skilled in the art may also perform digital-to-analog conversion processing by using other calculation methods.

The above embodiments may be combined with each other to solve the problem.

The pan detection circuitry 100 of the above-mentioned embodiment of this application can be after inserting the pan, the type of pan is judged through the voltage of partial pressure node department to start the culinary art mode that this pan type corresponds according to the judged result, not only be suitable for ordinary heating pans such as boiling pan, frying pan, still be suitable for broken wall cup etc. and need launch the pan of motor, realize cooking device 200's multi-functional culinary art mode, effectively promote cooking device's suitability, easily realize, and user operation is simple and convenient.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.

Claims (10)

1. The utility model provides a pan detection circuitry which characterized in that, pan detection circuitry includes:

the power supply port comprises a first pin and a second pin, the first pin is connected with one electrode of a power supply, and the second pin is connected with the other electrode of the power supply through a switch assembly;

the cooker identification circuit is connected with the second pin and used for outputting a corresponding identification signal according to a cooker connected with the power supply port;

and the control circuit is connected with the cooker identification circuit and used for determining the type of the cooker according to the identification signal.

2. The pot detection circuit of claim 1,

the pan identification circuit includes:

a voltage divider circuit having a voltage divider node;

and a voltage output circuit, connected to the voltage dividing node and the control circuit 30, for outputting the voltage signal of the voltage dividing node to the control circuit 30 as the identification signal.

3. The pot detection circuit of claim 2,

the voltage dividing circuit includes:

the resistor string comprises a plurality of resistors connected in series, a first end of the resistor string is connected with the second pin, and a second end of the resistor string is connected with the voltage division node;

and a first end of the first resistor is connected with the voltage division node, and a second end of the first resistor is grounded.

4. The pot detection circuit of claim 3,

the voltage dividing circuit further includes:

and the anode of the first diode is connected with the second end of the resistor string, and the cathode of the first diode is connected with the voltage division node.

5. The pot detection circuit of claim 2,

the voltage output circuit includes:

and a first end of the second resistor is connected with the voltage division node, and a second end of the second resistor is connected with the control circuit.

6. The pot detection circuit of claim 5, wherein,

the voltage output circuit further includes:

and the anode of the second diode is connected with the voltage division node, and the cathode of the second diode is connected with the reference voltage input end.

7. The pot detection circuit of claim 5, wherein,

the voltage output circuit further includes:

the capacitor bank comprises a plurality of capacitors connected in parallel, a first end of the capacitor bank is connected with the voltage division node, and a second end of the capacitor bank is grounded.

8. The pot detection circuit of claim 1,

the switch assembly includes:

the first end of the relay is connected with the second pin;

the first end of the silicon controlled switch is connected with the second end of the relay, and the second end of the silicon controlled switch is connected with the other electrode of the power supply;

wherein, respond to the type of pan is broken wall cup, the relay with silicon controlled switch responds to control command in order to control the motor work of broken wall cup.

9. A cooking apparatus, characterized in that the cooking apparatus comprises:

a base, on which a pot detection circuit according to any one of claims 1-8 is arranged;

when the base is connected with the cookware in a matching way, the power supply port of the cookware detection circuit is electrically connected with the cookware.

10. The cooking device of claim 9,

control circuit among the pan detection circuitry still is used for according to the pan type of pan will cooking device switches to the culinary art mode that corresponds.

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