A cooking utensil

Abstract

The present invention discloses a cooking utensil, which comprises: a box body, an opening and a door for closing the opening; a mechanical door lock mechanism, which is correspondingly arranged on the box body and the door, so that the cooking utensil has an unlocked door state and a single locked door state; an electronic door lock mechanism, which is correspondingly arranged on the box body and the door; when the electronic door lock mechanism is powered on and the cooking utensil is in the single locked door state, the electronic door lock mechanism has a double locked door state that makes the door lock on the box body again. With such arrangement, when there are children at home, the electronic door lock mechanism can be directly activated, so that the cooking utensil changes from the single locked door state to the double locked door state. Children cannot open the door directly, so as to avoid scalding the children and improve the overall safety of the cooking utensil.

Description

Technical Field

[0001] The present invention relates to the technical field of cooking utensils, and in particular to a cooking utensil. Background Art

[0002] At present, the door opening methods of cooking appliances are relatively simple. For example, microwave ovens, steam ovens, electric ovens, etc. generally open the door by directly pulling the handle or pressing the switch.

[0003] However, although this door opening method can achieve a quick door opening effect, when there are children at home, it is easy for the children to mistakenly operate the door just after heating is completed, which can easily cause the risk of scalding the children when opening the door. The safety performance is low, which brings many safety hazards to users. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is that the cooking utensils in the prior art generally adopt a one-step or one-button switch door opening method, which is easy to be opened by children by mistake, thereby providing a cooking utensil.

[0005] To achieve the above-mentioned object, an embodiment of the present invention provides a cooking utensil, which comprises: a box body, an opening and a box door for closing the opening;

[0006] A mechanical door lock mechanism is correspondingly arranged on the box body and the box door, so that the cooking appliance has an unlocked door state and a single locked door state;

[0007] An electronic door lock mechanism is correspondingly arranged on the box body and the box door;

[0008] When the electronic door lock mechanism is powered on and the cooking appliance is in the single door lock state, the electronic door lock mechanism has a double door lock state in which the cabinet door is locked on the cabinet body again.

[0009] Optionally, the electronic door lock mechanism includes:

[0010] A solenoid valve is arranged on one of the box body and the box door;

[0011] A door lock fixing frame is arranged on the other of the box body and the box door; the valve core of the solenoid valve is suitable for being inserted into the lock hole of the door lock fixing frame;

[0012] An electronic control system is communicatively connected with the solenoid valve.

[0013] Optionally, switching from the single door lock state to the double door lock state includes:

[0014] When the electronic control system detects that power is on and the cooking appliance is in the single door lock state, the electronic control system controls the solenoid valve to release, and the valve core of the solenoid valve is inserted into the lock hole of the door lock fixing frame, so that the box door is locked on the box body again.

[0015] Optionally, switching from the double-locked door state to the single-locked door state includes:

[0016] After the electronic control system detects the door opening instruction, the electronic control system controls the solenoid valve to be attracted, and the valve core of the solenoid valve is disengaged from the lock hole of the door lock fixing frame.

[0017] Optionally, after switching from the double-locked door state to the single-locked door state, the method further includes:

[0018] After the electronic control system controls the solenoid valve to be closed, if the box door is not opened after a preset time, the electronic control system controls the solenoid valve to be released.

[0019] Optionally, whether the box door is opened is detected by a micro switch, and the micro switch is communicatively connected with the electronic control system.

[0020] Optionally, the electronic control system includes an operation panel and a control circuit board which are communicatively connected to each other, and the control circuit board is communicatively connected to the solenoid valve.

[0021] Optionally, when a signal for suspending the operation of the electronic door lock mechanism is input through the operation panel, the control circuit board controls the solenoid valve to be attracted, and disconnects the communication between the control circuit board and the solenoid valve.

[0022] Optionally, when a signal for resuming operation of the electronic door lock mechanism is input through the operation panel, the control circuit board resumes communication with the solenoid valve, and the control circuit board controls the solenoid valve to release.

[0023] Optionally, when the electronic door lock mechanism is powered off, the solenoid valve is in a closed state.

[0024] Optionally, the electronic control system further comprises:

[0025] The power storage module supplies power to the operation panel, the control circuit board and the solenoid valve.

[0026] Optionally, the power storage module adopts a power storage method in which a capacitor is integrally arranged with the control circuit board, a power storage method of an independent capacitor power storage module, or a power storage method in which an independent battery module is combined with a charging circuit board.

[0027] Optionally, the control circuit board is communicatively connected to the power storage module, and the control circuit board detects the capacity of the power storage module in real time and controls the charging process of the power storage module.

[0028] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0029] 1. An embodiment of the present invention provides a cooking appliance, which includes: a box body, an opening and a door for closing the opening; a mechanical door lock mechanism, which is correspondingly arranged on the box body and the door, so that the cooking appliance has an unlocked door state and a single locked door state; an electronic door lock mechanism, which is correspondingly arranged on the box body and the door; when the electronic door lock mechanism is powered on and the cooking appliance is in the single locked door state, the electronic door lock mechanism has a double locked door state that locks the door to the box body again.

[0030] With this arrangement, when there are children at home, the electronic door lock mechanism can be directly activated, so that the cooking appliance changes from a single-door lock state to a double-door lock state. Children cannot directly open the door, thereby avoiding scalding the children and improving the overall safety of the cooking appliance.

[0031] 2. The embodiment of the present invention can realize the suspension and resumption of the electronic door lock mechanism. With this arrangement, the user can choose whether to double lock the door according to their own needs, thereby meeting the needs of different users and improving the practicality of the cooking appliance.

[0032] 3. The embodiment of the present invention can select a solenoid valve that remains closed when there is no external force. In this way, when the electronically controlled microwave oven door lock system is without power supply, the door lock system can be automatically canceled to mechanically open the cooking appliance door in one step, thereby preventing the cooking appliance door from being unable to be opened when there is no power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary workers in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0034] Figure 1 It is a virtual schematic diagram of each functional module of the electric control part of an embodiment of the present invention;

[0035] Figure 2 It is an overall virtual schematic diagram of an embodiment of the present invention when a power storage method combining an independent battery module and a charging circuit board is adopted;

[0036] Figure 3 It is a virtual schematic diagram of each functional module in the embodiment of the present invention;

[0037] Figure 4 Schematic diagram of a solenoid valve control circuit according to an embodiment of the present invention;

[0038] Figure 5 This is a circuit diagram of a charging circuit board according to an embodiment of the present invention;

[0039] Figure 6 is a schematic diagram of an electric control according to an embodiment of the present invention;

[0040] Figure 7 A circuit diagram of an embodiment of the present invention in which a capacitor and the control circuit board are integrated into one power storage mode;

[0041] Figure 8 A virtual schematic diagram of each functional module of the electric control part when the embodiment of the present invention adopts a power storage method in which the capacitor and the control circuit board are integrally arranged;

[0042] Fig. 9 It is an overall virtual schematic diagram of an embodiment of the present invention when a power storage method combining an independent battery module and a charging circuit board is adopted.

[0043] Reference numerals:

[0044] Q1, first transistor; Q2, second transistor; Q5, fifth transistor; Q6, sixth transistor; EC, energy storage capacitor. DETAILED DESCRIPTION

[0045] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary workers in the field without creative work are within the scope of protection of the present invention.

[0046] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can also be the internal communication of two components, it can be a wireless connection, or it can be a wired connection. For ordinary workers in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0049] At present, the door opening methods of cooking appliances are relatively simple. For example, microwave ovens, steam ovens, electric ovens, etc. generally use direct pulling of handles or pressing of switches to open the doors. However, although this door opening method can achieve a quick door opening effect, when there are children at home, it is easy for the children to misoperate when the door is just heated, which can easily cause the risk of scalding the children. The safety performance is low, which brings many safety hazards to users.

[0050] Therefore, the technical problem to be solved by the present invention is that the cooking utensils in the prior art generally adopt a one-step or one-button switch door opening method, which is easy to be opened by children by mistake, thereby providing a cooking utensil.

[0051] Example 1

[0052] like Figures 1 to 9 As shown, an embodiment of the present invention provides a cooking appliance, which includes: a box body, a box door, and a mechanical door lock mechanism and an electronic door lock mechanism for locking the door.

[0053] Specifically, in an embodiment of the present invention, the cooking utensil may be a microwave oven, a steam oven, an electric oven, etc., and in this embodiment, only a microwave oven is used as an example. Specifically, an opening and a door for closing the opening are provided on the box. The door can be rotatably connected to the box through a rotating shaft, so as to realize opening and closing the door. The door can also be separated from the box, and the user can directly pull open and cover the door from the side to realize opening and closing the door. When the door and the box are separated, the electronic door lock mechanism is connected to the electrical connector of the box when closing the door to realize power on. Similarly, the electronic door lock mechanism is separated from the electrical connector of the box when opening the door to realize power off. Of course, this embodiment is only an example of the connection method between the door and the box, but it is not limited to this. Those skilled in the art can make changes according to actual conditions, and can achieve the same technical effect.

[0054] Furthermore, in an embodiment of the present invention, the mechanical door lock mechanism is a door lock mechanism commonly used in cooking appliances. The mechanical door lock mechanism can be correspondingly arranged on the box body and the box door, so that the cooking appliance has an unlocked door state and a single locked door state. In the unlocked door state, after the box door is closed, the mechanical door lock structure does not insert the lock core into the lock hole; in the single locked door state, after the box door is closed, only the mechanical door lock structure inserts the lock core into the lock hole.

[0055] Furthermore, in an embodiment of the present invention, an electronic door lock mechanism is correspondingly arranged on the box body and the box door. Specifically, the electronic door lock mechanism is a part of the cooking appliance, so the electronic door lock mechanism can work normally after the cooking appliance is powered on by an external power source, and the electronic door lock mechanism cannot work normally before the cooking appliance is powered on or after the power is off. When the user uses the cooking appliance, if there are children in the use environment, the user can first lock the box door through the mechanical door lock mechanism, which is in a single-locked door state, and then start the electronic door lock mechanism to lock the box door again, so that the box door is in a double-locked door state. That is to say, when the electronic door lock mechanism is powered on and the cooking appliance is in the single-locked door state, the electronic door lock mechanism has a double-locked door state that causes the box door to be locked on the box body again.

[0056] With this arrangement, when there are children at home, the electronic door lock mechanism can be directly activated, so that the cooking appliance changes from a single-door lock state to a double-door lock state. Children cannot directly open the door, thereby avoiding scalding the children and improving the overall safety of the cooking appliance.

[0057] Further, in an optional embodiment of the present invention, the electronic door lock mechanism includes a solenoid valve, a door lock fixing frame, and an electronic control system. Specifically, the solenoid valve is arranged on one of the box body and the box door, the door lock fixing frame is arranged on the other of the box body and the box door, and the valve core of the solenoid valve is suitable for inserting into the lock hole of the door lock fixing frame. The electronic control system is connected to the solenoid valve in communication, and the electronic control system is used to control the release and attraction of the solenoid valve.

[0058] In this embodiment, the solenoid valve can be set on the box door, the door lock fixing frame can be set at the opening on the box body, and the valve core of the solenoid valve can be set corresponding to the lock hole on the door lock fixing frame. Of course, the solenoid valve can also be set at the opening on the box body, and the door lock fixing frame can be set on the box door. This embodiment is only an example of the specific setting position of the solenoid valve and the door lock fixing frame, but it is not limited to this. Those skilled in the art can change it according to actual conditions as long as the same technical effect can be achieved.

[0059] Further, in an optional embodiment of the present invention, switching from the single door lock state to the double door lock state includes:

[0060] When the electronic control system detects that power is on and the cooking appliance is in the single door lock state, the electronic control system controls the solenoid valve to release, and the valve core of the solenoid valve is inserted into the lock hole of the door lock fixing frame, so that the box door is locked on the box body again.

[0061] Specifically, when the electronic control system detects that the power is on, it means that the cooking appliance has been powered on and is ready to work. At this time, the electromagnetic control system can control the release of the electromagnetic valve after a certain reaction time, such as one second, two seconds, or three seconds. After the valve core of the electromagnetic valve is inserted into the lock hole of the door lock fixing frame, the double door lock is completed. Of course, those skilled in the art can add a prompt device according to actual conditions to prompt the user that the double door lock is completed by issuing a prompt signal. For example, the prompt signal can be a buzzer or a ticking sound. In this embodiment, two ticking sounds can be issued as a prompt after the electromagnetic valve is released. This embodiment is only an example for illustration, but it is not limited to this, and it can achieve the same technical effect.

[0062] Further, switching from the double-locked door state to the single-locked door state includes:

[0063] After the electronic control system detects the door opening instruction, the electronic control system controls the solenoid valve to be attracted, and the valve core of the solenoid valve is disengaged from the lock hole of the door lock fixing frame.

[0064] Specifically, when the user wants to open the door, for example, after pressing the door opening button, the electronic control system can detect the door opening command. Subsequently, the electronic control system controls the solenoid valve to close, and the valve core of the solenoid valve is disengaged from the lock hole of the door lock fixing frame. At this time, it is in a single door lock state. Then, if the user wants to continue to open the door, the user can open the door through the mechanical door lock mechanism.

[0065] Further, in an optional embodiment of the present invention, after switching from the double-locked door state to the single-locked door state, the method further includes:

[0066] After the electronic control system controls the solenoid valve to close, if the door is not opened after a preset time, for example, the user does not open the door after two or three seconds, it means that the user is not in front of the cooking appliance, or the user suddenly changes his mind and does not want to open the door. Then, in order to prevent children from operating the door by mistake, the electronic control system can control the solenoid valve to release and return to the double-locked state.

[0067] Moreover, in this embodiment, whether the box door is opened can be detected by a micro switch, and the micro switch is connected to the electronic control system. Of course, those skilled in the art can detect whether the box door is opened by other means, such as a displacement sensor, an infrared sensor, an image sensor, etc. This embodiment is only an example, but it is not limited to this, and it can achieve the same technical effect.

[0068] Further, in an optional embodiment of the present invention, the electronic control system includes an operation panel and a control circuit board that are communicatively connected to each other, and the control circuit board is communicatively connected to the solenoid valve. Specifically, the user can control the electronic door lock mechanism to stop working or resume working through the operation panel. For example, when the user wants to stop the electronic door lock mechanism, he can press the pause button on the operation panel, that is, input a signal through the operation panel to pause the electronic door lock mechanism, and the control circuit board controls the solenoid valve to close and disconnects the communication between the control circuit board and the solenoid valve. When the user wants to resume working of the electronic door lock mechanism, he can press the resume button on the operation panel, that is, when the signal is input through the operation panel to resume working of the electronic door lock mechanism, the control circuit board resumes communication with the solenoid valve and controls the release of the solenoid valve.

[0069] In an embodiment of the present invention, the solenoid valve can be controlled to engage by pressing the digital button "0" on the operation panel, and the electronic door lock mechanism can be controlled to stop working or resume working by pressing the digital buttons "7" and "9" on the operation panel. For example, when the user presses "7" and "9" at the same time for the first time, the electronic door lock mechanism stops working, and a prompt signal for stopping working is issued at this time; when the user presses "7" and "9" at the same time for the second time, the electronic door lock mechanism resumes working, and a prompt signal for resuming working is issued at this time. This embodiment is only an example of the operation mode of the operation panel, but it is not limited thereto. Those skilled in the art can make changes according to actual conditions as long as the same technical effect is achieved.

[0070] The embodiment of the present invention can realize the suspension and resumption of the electronic door lock mechanism. With this arrangement, the user can choose whether to double lock the door according to their own needs, thereby meeting the needs of different users and improving the practicality of the cooking appliance.

[0071] Furthermore, in an optional embodiment of the present invention, when the electronic door lock mechanism is powered off, the solenoid valve is in a closed state. In this way, when the electronically controlled microwave oven door lock system is without power supply, the door lock system can be automatically canceled to mechanically open the door of the cooking appliance in one step. This prevents the cooking appliance door from being unable to be opened when there is no power supply.

[0072] In another alternative embodiment, when the solenoid valve is powered off, the solenoid valve core can be maintained in an engaged or released state. In this case, the principle of the solenoid valve can be as follows:

[0073] The solenoid valve consists of the core components of the first coil, the second coil, the first magnet, the second magnet, the valve core, and the guide rod. The magnetic poles of the first magnet and the second magnet are opposite. When the first coil is energized, the magnetic flux generated by the first magnet and the magnetic attraction force generated together are greater than the magnetic attraction force generated by the second magnet, or when the second coil is energized, the magnetic flux generated by the second magnet and the magnetic attraction force generated together are greater than the magnetic attraction force generated by the first magnet. In this way, the valve core can be driven to move, and the solenoid valve can achieve the action of attraction and release. When the solenoid valve is powered off, the magnetic force generated by the first magnet and the second magnet can adsorb the valve core, thereby maintaining the solenoid valve core in the attracted or released state.

[0074] Specifically, Figure 1 , Figure 3 and Figure 8 As shown, a solenoid valve control circuit and a main control chip are provided on the control circuit board. The solenoid valve control circuit includes two independently arranged switch components, the two switch components are respectively connected to the first coil and the second coil, and the main control chip controls the two switch components respectively. After the solenoid valve works instantaneously, the power can be cut off, so that the state can be maintained continuously, achieving low energy consumption and stable state. The two switch components can be two separate transistors, namely the first transistor Q1 and the second transistor Q2.

[0075] The two sets of coils in the solenoid valve remain in their original state when no current passes through. The main control chip instantly pulls up the drive signal of the solenoid valve drive circuit, causing one of the transistors to turn on. The solenoid valve coil instantly forms a closed loop, attracting the valve core, thereby disconnecting the solenoid valve.

[0076] The solenoid valve control circuit includes two transistors, and the two output level signal terminals of the main control chip are respectively connected to a resistor, the first resistor is connected to the base of the first transistor Q1, the second resistor is connected to the base of the second transistor Q2, the emitters of the two transistors are connected to the ground, the collectors of the two transistors are respectively connected to the first coil and the second coil, and the other ends of the first coil and the second coil are connected to a 12V power supply.

[0077] like Figure 4 As shown, in normal operation, the main control chip outputs a high-level signal for 800ms and inputs it to the base of the first transistor Q1. The first transistor Q1 is turned on, and current flows through the first coil, forming a loop instantly, and the solenoid valve is released;

[0078] When the main control chip sets the level to a low level, the first transistor Q1 is not conducting, and the solenoid valve does not work due to the lack of current, thus maintaining the original release state;

[0079] The main control chip outputs a high-level signal of 800ms and inputs it to the base of the second transistor Q2 through the second resistor. The second transistor Q2 is turned on, and the current flows through the second coil, forming a loop instantly, and the solenoid valve is closed.

[0080] When the main control chip sets the electrical level to a low level, the second transistor Q2 is not conducting, and the solenoid valve does not work due to the lack of current, thereby maintaining the original attracted state.

[0081] In this alternative embodiment, the specific process of switching from the double-locked door state to the single-locked door state and switching from the single-locked door state to the double-locked door state includes the following steps:

[0082] Step 1: The main control chip detects whether the second door opening cancellation command is input. If not, proceed to step 2; if yes, proceed to step 7;

[0083] Step 2: The main control chip determines whether the detection door is open. If it is open, it proceeds to step 3. If it is closed, it proceeds to step 4.

[0084] Step 3: The main control chip obtains the door status through the micro switch. If the micro switch outputs a low level, it means there is no door pulling action. If the micro switch outputs a high level, it means there is a door pulling action. If it is a low level, go to step 4; if it is a high level, go to step 6.

[0085] Step 4: The main control chip outputs a high level and enters step 5;

[0086] Step 5: The first transistor Q1 is turned on to release the solenoid valve and lock the door;

[0087] Step 6: Press the key to input the door opening command and proceed to step 7;

[0088] Step 7: The second transistor Q2 is turned on to set the solenoid valve to a closed state and open the door.

[0089] Furthermore, in this alternative embodiment, two more transistors may be added, a third transistor and a fourth transistor.

[0090] The collector of the first transistor Q1 is connected to the base of the third transistor through a resistor, the emitter of the third transistor is connected to a 12V power supply, and the collector of the third transistor is connected to the first coil;

[0091] The collector of the second transistor Q2 is connected to the base of the fourth transistor through a resistor, the emitter of the fourth transistor is connected to a 12V power supply, and the collector of the fourth transistor is connected to the second coil.

[0092] Under normal operation, the main control chip outputs a high-level signal for 800ms and inputs it to the base of the first transistor Q1. The first transistor Q1 is turned on, and the collector of the first transistor Q1 is at a low level, driving the third transistor to turn on. The current flows from 12V to the third transistor and then flows into the first coil, forming a loop instantly, and the solenoid valve is released;

[0093] When the main control chip sets the level to a low level, the first transistor Q1 is not conducting, the third transistor is not conducting, and the solenoid valve does not work due to the lack of current, thus maintaining the original release state;

[0094] Similarly, the main control chip outputs a high-level signal for 800ms and inputs it to the base of the second transistor Q2 through the second resistor. The second transistor Q2 is turned on, driving the fourth transistor to be turned on. Current flows through the second coil, forming a loop instantly, and the solenoid valve is closed.

[0095] When the main control chip sets the electrical level to a low level, the second transistor Q2 is not conducting, the fourth transistor is not conducting, and the solenoid valve does not work due to the lack of current, thereby maintaining the original attracted state.

[0096] Furthermore, in an optional embodiment of the present invention, the electronic control system further includes a power storage module, which supplies power to the operation panel, the control circuit board, and the solenoid valve. Specifically, the power storage module adopts a power storage method in which a capacitor is integrated with the control circuit board, an independent capacitor power storage module, or an independent battery module is combined with a charging circuit board. In addition, the control circuit board is communicatively connected with the power storage module, and the control circuit board detects the capacitance of the power storage module in real time and controls the charging process of the power storage module.

[0097] When a power storage method is adopted in which a capacitor is integrated with the control circuit board, such as Figure 7 and Fig. 9 As shown, the large-capacity energy storage capacitor EC can be connected to the solenoid valve control circuit, one end of the large-capacity energy storage capacitor EC is connected to the 12V power supply, and the other end of the large-capacity energy storage capacitor EC is grounded.

[0098] When using a power storage method that combines an independent battery module with a charging circuit board, such as Figure 2 and Figure 5As shown, the charging circuit board is provided with a charging circuit and a charging chip connected to each other. The charging switch in the charging circuit is the fifth transistor Q5. The collector of the fifth transistor Q5 is connected to the working selection pin of the charging chip, the emitter is grounded, the base is connected to the current limiting resistor and the bias resistor, and the other end of the current limiting resistor is connected to the IO port of the main control chip. Among them, the drain of the MOS tube is connected to the positive electrode of the power supply battery, the gate is connected to the collector of the sixth transistor Q6 through a resistor, and the source is connected to the power supply. The emitter of the sixth transistor Q6 is grounded, and the base of the sixth transistor Q6 is connected to the output end of the charging chip through a resistor.

[0099] The main control chip detects that the voltage of the battery module is lower than the set value, and the IO port of the main control chip outputs a low level, so that the fifth transistor Q5 is not turned on, and the enable end of the charging chip inputs a high level, and the charging chip starts working. Then, the output end of the charging chip outputs a high level, the sixth transistor Q6 is turned on, and the MOS tube is turned on, so that the battery module is powered by the power supply, and the battery module is charged. When the battery module is fully charged, the IO port of the main control chip detects that the voltage of the battery module is equal to the set value, the main control chip outputs a high level, the fifth transistor Q5 is turned on, the enable end of the charging chip is grounded, the charging chip turns off the signal pin, and the charging chip does not work. Therefore, the sixth transistor Q6 is turned off, the MOS tube is turned off, and the power supply stops charging the battery module.

[0100] Step 1: The main control chip detects whether the battery voltage is too low. If yes, proceed to step 2; if not, proceed to step 5;

[0101] Step 2: The main control chip outputs a low level and enters step 3;

[0102] Step 3: The charging chip works and the battery is charged;

[0103] Step 4: Battery fully charged;

[0104] Step 5: The main control chip outputs a high level, the charging chip does not work, and the battery is fully charged.

[0105] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For ordinary workers in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the protection scope of the invention.

Claims

1. A cooking utensil, characterized in that: include: A box body, provided with an opening and a door for closing the opening; A mechanical door lock mechanism is correspondingly arranged on the box body and the box door, so that the cooking appliance has an unlocked door state and a single locked door state; An electronic door lock mechanism is correspondingly arranged on the box body and the box door; When the electronic door lock mechanism is powered on and the cooking appliance is in the single door lock state, the electronic door lock mechanism has a double door lock state that causes the cabinet door to be locked on the cabinet again; the electronic door lock mechanism comprises: A solenoid valve is arranged on one of the box body and the box door; A door lock fixing frame is arranged on the other of the box body and the box door; the valve core of the solenoid valve is suitable for being inserted into the lock hole of the door lock fixing frame; An electronic control system, communicatively connected to the solenoid valve; After switching from the double-locked door state to the single-locked door state, if the box door is not opened within a preset time, the electronic control system controls the solenoid valve to release.

2. The cooking device according to claim 1, characterized in that: Switching from the single-lock door state to the double-lock door state includes: When the electronic control system detects that power is on and the cooking appliance is in the single door lock state, the electronic control system controls the solenoid valve to release, and the valve core of the solenoid valve is inserted into the lock hole of the door lock fixing frame, so that the box door is locked on the box body again.

3. The cooking device according to claim 2, characterized in that: Switching from the double-locked door state to the single-locked door state includes: After the electronic control system detects the door opening instruction, the electronic control system controls the solenoid valve to be attracted, and the valve core of the solenoid valve is disengaged from the lock hole of the door lock fixing frame.

4. The cooking device according to claim 3, characterized in that: Whether the box door is opened is detected by a micro switch, and the micro switch is communicatively connected with the electronic control system.

5. The cooking device according to any one of claims 1 to 4, characterized in that: The electronic control system includes an operation panel and a control circuit board which are communicatively connected to each other, and the control circuit board is communicatively connected to the solenoid valve.

6. The cooking device according to claim 5, characterized in that: When a signal for suspending the operation of the electronic door lock mechanism is input through the operation panel, the control circuit board controls the solenoid valve to be attracted, and disconnects the communication between the control circuit board and the solenoid valve.

7. The cooking device according to claim 6, characterized in that: When a signal for resuming operation of the electronic door lock mechanism is input through the operation panel, the control circuit board resumes communication with the solenoid valve, and the control circuit board controls the solenoid valve to release.

8. The cooking device according to claim 6 or 7, characterized in that: When the electronic door lock mechanism is powered off, the solenoid valve is in a closed state.

9. The cooking device according to claim 8, characterized in that: The electronic control system further comprises: The power storage module supplies power to the operation panel, the control circuit board and the solenoid valve.

10. The cooking appliance according to claim 9, characterized in that The power storage module adopts a power storage method in which a capacitor is integrated with the control circuit board, a power storage method of an independent capacitor power storage module, or a power storage method in which an independent battery module is combined with a charging circuit board.

11. The cooking device according to claim 10, characterized in that: The control circuit board is in communication connection with the power storage module, and the control circuit board detects the capacity of the power storage module in real time and controls the charging process of the power storage module.

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